CN209600620U - A new energy logistics vehicle, a carriage and its underframe - Google Patents

Abstract

The utility model discloses a kind of new energy logistic car, compartment and its chassis, chassis includes at least two stringers longitudinally extended, the more crossbeams being laterally extended are distributed along its length on two stringers, crossbeam and stringer are all made of the C-shaped profile in cross section and are made, crossbeam is arranged above stringer and is fixedly connected by fastener, crossbeam and the rectangular angle of stringer are arranged and are equipped with right angle reinforcing member in angular position, the side of right angle reinforcing member is fixedly connected with crossbeam by fastener, and the other side of right angle reinforcing member is fixedly connected with stringer by fastener.The longitudinal and cross beam of the chassis of the utility model is made of profile, is fixedly connected to form by fastener, and standardization level is high, and convenient transportation is easy for assembly.Reinforcement fixation, sound construction, accurate positioning are carried out to crossbeam and stringer using right angle reinforcing member.

Description

A new energy logistics vehicle, a carriage and its underframe

technical field

The invention belongs to the technical field of vans and new energy vehicles, more specifically, it relates to a new energy logistics vehicle, a carriage and its underframe.

Background technique

Vans, also known as vans, are mainly used for fully sealed transportation of various items, and special types of vans can also transport chemical dangerous goods. During the transportation process, the van has the advantages of flexible maneuvering, convenient operation, high efficiency, large transportation capacity, full use of space, safety and reliability. Traditional vans are fuel vehicles with sufficient power, long mileage, and convenient refueling. Therefore, iron corrugated boards are generally used to make the carriages. Such carriages are heavy and cannot be used in electric new energy vehicles. Moreover, cities around the world have higher and higher requirements for energy conservation and environmental protection, and the express logistics industry also needs more new energy logistics vehicles to meet their needs.

The Chinese patent with application publication number CN106394706A discloses a logistics vehicle and its compartment. The assembly is set above the chassis assembly, the skirt assembly is set under the chassis assembly, the rear door panel assembly is connected with the box panel assembly, the chassis assembly and the skirt assembly at the same time; the box panel assembly includes the top panel , the front plate, the first side plate and the second side plate, the first side plate, the front plate and the second side plate are connected in sequence and then respectively connected to 3 sides of the top plate through the first connecting piece; the first connecting piece includes The first connecting groove and the second connecting groove extending on its length direction, the groove depth directions of the first connecting groove and the second connecting groove are perpendicular to each other, and the first connecting groove and the second connecting groove are used for connecting with different plates Cooperate; a protective plate is provided at the inner side of the box plate assembly above the chassis assembly, and the protective plate includes a main body of the protective plate for bonding with the front plate, the first side plate or the second side plate, and the main body of the protective plate is used for The front panel, the first side panel or the second side panel are connected; the lower end of the main body of the protective panel is bent vertically inward to form a hemming part of the protective panel for fitting the upper surface of the chassis assembly, and the hemming part of the protective panel is used for connecting with the bottom frame assembly connection; connecting strips are provided between the outer sides of the front panel, the first side panel or the second side panel and the corresponding outer sides of the bottom frame assembly, and two rows of connecting through holes are provided on the connecting strips, respectively for The through hole for the first connecting bar to cooperate with the outer side of the front plate, the first side plate or the second side plate, and the second through hole for connecting with the outer edge of the chassis assembly; the skirt assembly Including skirt boards respectively arranged on both sides of the bottom frame assembly; the front end of the skirt board is provided with an end connector, and the end connector is provided with a card slot for matching with the skirt board; the skirt board The middle part is vertically provided with a connecting rod, and the upper end of the connecting rod is used to connect with the bottom of the chassis assembly; the rear door panel assembly includes a rear door frame assembly and a rear door assembly, and the rear door frame assembly is used to simultaneously connect with the box panel assembly, the chassis assembly and the bottom frame assembly. The skirt assembly cooperates, and the rear door assembly is arranged at the rear door frame assembly; the rear door frame assembly includes two rear door frame vertical rods arranged vertically, the upper ends of the two rear door frame vertical rods are horizontally arranged with rear door frame beams, and the two rear door frame The lower part of the pole is provided with a tailgate assembly, and the rear door assembly is arranged between the rear door frame beam and the tailgate assembly; the rear door frame pole includes a pole body, and the pole body is formed into a hollow "L" shape by bending a plate. The main body of the pole includes a main body and a slot part perpendicular to the main body; the slot part at the rear door assembly is used to cooperate with the corresponding side panel at the box panel assembly, and the slot part at the tailgate assembly is used to To cooperate with the skirt panel; the rear door frame beam includes a beam main body, the side of the beam main body used to cooperate with the box panel assembly is provided with a supporting plate, and the top of the beam main body is provided with a second weather shield, and the second rain shield is facing The inner extension and the supporting plate together form a top plate slot for matching with the top plate at the box panel assembly.

In the prior art, there are still some defects in the new energy logistics vehicle, including: 1) The side panels of the compartment and the underframe are connected by connecting strips arranged on the outside of the compartment, the connection strength is low, the structure is not strong enough, and there are side doors. The connecting strip connecting one side with the underframe is divided into three sections, which affects the overall structural strength of the carriage and the connection strength between the side door frame assembly, the side panel and the underframe of the carriage; 2) The underframe of the carriage is welded into a whole with I-beams , bulky, heavy, transportation, storage and installation are very inconvenient, and according to different sizes and specifications of the carriages need to be customized in the chassis manufacturer, the assembly factory is difficult to assemble by itself, and the efficiency is low; 3) the rear door of the carriage is always The connection parts of the finished parts are only welded or spliced by fasteners, which is inconvenient and not firm enough to assemble. The main body of the rear door frame vertical rod is made of a hollow L shape by bending the plate. The main body of the rear door frame vertical rod includes the main body and the vertical There are reinforcing plates welded between the card slots, and the internal welding is difficult; 4) The skirt plate is fixed and installed on the side of the chassis of the new energy logistics vehicle as a whole. When the logistics vehicle is overhauled, it is necessary to It is inconvenient to drill into the bottom of the car or jack up the whole car, especially when the battery is placed on the chassis of the new energy logistics car, it is very inconvenient to replace and overhaul the battery; 5) The roof of the car is made of a whole composite plate, Because the area is large and the horizontal suspension is prone to collapse in the middle, it will affect the strength of the carriage.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a new energy logistics vehicle, a compartment and its underframe. The longitudinal beams and cross beams of the underframe are made of profiles, fixed and connected by fasteners, and have a high degree of standardization. Easy to assemble.

In order to achieve the above-mentioned technical purpose, the present invention provides the following technical solution: a chassis of a new energy logistics vehicle, including at least two longitudinally extending longitudinal beams, and a plurality of transversely extending beams are distributed along the length direction of the two longitudinal beams, Both the cross beam and the longitudinal beam are made of C-shaped profiles. The cross beam is set above the longitudinal beam and fixedly connected by fasteners. One side of the right-angle reinforcement is fixedly connected to the crossbeam through a fastener, and the other side of the right-angle reinforcement is fixedly connected to the longitudinal beam through a fastener. In this way, the longitudinal girders and cross girders of the chassis are made of profiles and fixedly connected by fasteners, which has a high degree of standardization, is convenient for transportation, and is easy to assemble. The crossbeam and longitudinal beam are strengthened and fixed by right-angle reinforcements, the structure is firm and the positioning is accurate.

As a preference: the beam is made of aluminum profile, the cross-sectional structure of the beam profile includes a first vertical plate part and two first flat plates arranged on the upper and lower sides of the first vertical plate part; the longitudinal beam is made of aluminum The cross-sectional structure of the longitudinal beam profile includes a second vertical plate part and two second flat plate parts arranged on the upper and lower sides of the second vertical plate part; the right-angle reinforcement is installed on the first vertical plate of the beam part and the second vertical part of the longitudinal beam, one side of the right-angle reinforcement is fixedly connected with the first vertical part of the beam through fasteners, and the other side of the right-angle reinforcement is connected to the first vertical part of the longitudinal beam. The two vertical board parts are fixedly connected by fasteners. In this way, the aluminum profile is easy to process and light in weight, which can reduce the dead weight of the vehicle.

As a preference: the beam is equipped with a first reinforcement, the first reinforcement is made of an aluminum C-shaped profile, and the section structure of the profile includes a first reinforced vertical plate and two upper and lower sides of the first reinforced vertical plate. The two first reinforced flat parts on the side, the first reinforced part is embedded in the groove of the beam; The two flat parts are respectively located on the upper and lower sides of the first flat part at the bottom of the beam, and the second flat part at the top of the longitudinal beam, the first flat part at the bottom of the cross beam and the first reinforcing flat part at the bottom of the first reinforcement are fixed by fasteners Connection; when the right-angle reinforcement is fixedly connected to the beam, the first reinforcement vertical plate of the right-angle reinforcement and the first reinforcement is respectively located on the inner and outer sides of the first vertical plate of the beam, and the first vertical plate of the right-angle reinforcement and the beam and the first reinforcement vertical plate part of the first reinforcement part are fixedly connected by fasteners; the first reinforcement vertical plate part of the first reinforcement part is close to the first vertical plate part of the beam so that the cross-section after the first reinforcement part and the beam are assembled The structure is C-shaped, or the first reinforcement vertical plate portion of the first reinforcement member is away from the first vertical plate portion of the cross beam, so that the cross-sectional structure of the first reinforcement member and the cross beam after assembly is mouth-shaped. In this way, the connecting parts of the openings of the crossbeams are reinforced by the reinforcing parts, and the weak parts are strengthened to increase the overall structural strength and bearing weight, while avoiding increasing the manufacturing cost and the weight of the carriage as much as possible.

As a preference: the inner sidewalls of the two first flat plate parts of the beam and the outer side walls of the two first reinforced flat plate parts of the first reinforcement realize lateral sliding and longitudinal positioning through a concave-convex fit structure; A first limiting protrusion is protruded from the first flat part and is used to limit the first reinforcing part from slipping out of the groove of the crossbeam.

As a preference: the longitudinal beam is equipped with a second reinforcement, the second reinforcement is made of aluminum C-shaped profile, the cross-sectional structure of the profile includes the second reinforced vertical plate and the upper and lower sides of the second reinforced vertical plate There are two second reinforced flat parts on both sides, and the second reinforced part is embedded in the groove of the longitudinal beam; The two reinforced flat parts are respectively located on the upper and lower sides of the second flat part at the top of the longitudinal beam, the second flat part at the top of the longitudinal beam, the first flat part at the bottom of the cross beam and the second reinforced flat part at the top of the second reinforcement part by fastening when the right-angle reinforcement is fixedly connected to the longitudinal beam, the second reinforcement vertical plate of the right-angle reinforcement and the second reinforcement are respectively located on the inner and outer sides of the second vertical plate of the longitudinal beam, the right-angle reinforcement, the longitudinal beam The second vertical board part of the second reinforcement part is fixedly connected with the second reinforced vertical board part of the second reinforcement part through fasteners. In this way, the connecting parts of the openings of the longitudinal beams are reinforced by using reinforcements, and the weak parts are strengthened to increase the overall structural strength and bearing weight, while avoiding increasing the manufacturing cost and the weight of the carriage as much as possible.

As a preference: the second reinforcement vertical plate portion of the second reinforcement member is close to the second vertical plate portion of the longitudinal beam so that the cross-sectional structure of the second reinforcement member and the longitudinal beam after assembly is C-shaped, or the second reinforcement of the second reinforcement member The vertical plate portion is far away from the second vertical plate portion of the longitudinal beam, so that the cross-sectional structure of the assembled second reinforcement member and the longitudinal beam is mouth-shaped.

As a preference: the inner side wall of the second flat plate part of the longitudinal beam and the outer side wall of the second reinforced flat plate part of the second reinforcement realize longitudinal sliding and lateral positioning through a concave-convex fit structure; the upper and lower second flat plate parts of the longitudinal beam The upper protrusion is formed with a second limiting protrusion for limiting the second reinforcing member to escape from the groove of the longitudinal beam.

As a preference: the chassis panels are fixed on the plurality of beams.

A compartment of a new energy logistics vehicle, including a panel assembly, a skirt assembly, and a rear door assembly, and also includes the above-mentioned underframe of a new energy logistics vehicle.

A new energy logistics vehicle includes the above-mentioned underframe of the new energy logistics vehicle.

A new energy logistics vehicle includes the chassis of the above-mentioned new energy logistics vehicle.

In summary, the present invention has the following beneficial effects:

1. The longitudinal beams and cross beams of the underframe of the logistics vehicle of the present invention are made of profiles, and are fixed and connected by fasteners, which have a high degree of standardization and are easy to assemble;

2. The underframe of the logistics vehicle of the present invention can be disassembled into beams and longitudinal beams, which is convenient for transportation and takes up little space;

3. The underframe of the logistics vehicle of the present invention adopts reinforcements to reinforce the opening and connecting parts of the beams, and strengthens the weak parts to increase the overall structural strength and bearing weight, while avoiding increasing the manufacturing cost and the weight of the carriage as much as possible.

Description of drawings

Fig. 1 is the perspective view of the compartment body of the present invention;

Fig. 2 is a perspective view of another perspective of the carriage body of the present invention;

Figure 3 is an exploded view of the carriage body of the present invention;

Figure 4 is an exploded view of the panel assembly and the underframe of the present invention;

Fig. 5 is a structural schematic diagram of a connector of the present invention;

Fig. 6 is a schematic cross-sectional structure diagram of a connector of the present invention;

Fig. 7 is a structural schematic diagram of the chassis of the present invention;

Fig. 8 is the schematic diagram of beam and longitudinal beam assembly of the present invention;

Fig. 9 is a schematic cross-sectional structure diagram of a beam of the present invention;

Fig. 10 is a schematic cross-sectional structure diagram of a longitudinal beam of the present invention;

Fig. 11 is a schematic diagram of the assembly of the right-angle reinforcement of the present invention with longitudinal beams and beams;

Fig. 12 is a schematic structural view of a right-angle reinforcement of the present invention;

Fig. 13 is a schematic cross-sectional structure diagram of the assembled first reinforcing member and beam of the present invention;

Fig. 14 is a schematic cross-sectional structure diagram of the first reinforcing member of the present invention;

Fig. 15 is a schematic diagram of the assembly of the first reinforcing member, the longitudinal beam and the beam of the present invention;

Fig. 16 is a schematic diagram of another embodiment of the assembly of the first reinforcing member and the beam of the present invention;

Fig. 17 is a schematic diagram of the assembly of the second reinforcement and the longitudinal beam of the present invention;

Fig. 18 is a schematic cross-sectional structure diagram of a second reinforcing member of the present invention;

Figure 19 is an exploded view of the side door assembly of the present invention;

Fig. 20 is a schematic diagram of the assembly of the lower side sill, the side door frame assembly and the connecting piece of the present invention;

Fig. 21 is a schematic cross-sectional structure diagram of the side beam of the present invention;

Fig. 22 is a schematic diagram of the assembly of the lower side beam, the side plate and the cross beam of the present invention;

Fig. 23 is a schematic cross-sectional structure diagram of another embodiment of the lower side sill of the present invention;

Fig. 24 is a schematic cross-sectional structure diagram of a side door frame beam of the present invention;

Fig. 25 is a structural schematic diagram of the assembly of the side door frame beam and the connector of the present invention;

Fig. 26 is a schematic cross-sectional structure diagram of the side door pole of the present invention;

Fig. 27 is a schematic structural view of the side door corner code of the present invention;

Fig. 28 is a schematic diagram of the assembly of the lower side sill and the side door pole of the present invention;

Fig. 29 is a schematic structural view of the rear door assembly of the present invention;

Fig. 30 is a schematic structural view of the rear door frame pole of the present invention;

Fig. 31 is a structural schematic diagram of the connection of the rear door frame beam, the connecting piece and the rear door frame vertical rod through the first corner code of the present invention;

Fig. 32 is a partial enlarged view of A in Fig. 31;

Fig. 33 is a structural schematic diagram of the first angle code of the present invention;

Fig. 34 is a cross-sectional schematic diagram of the connection between the rear door frame cross beam and the rear door frame vertical rod through the first corner code of the present invention;

Fig. 35 is a schematic structural view of the rear door frame beam of the present invention;

Fig. 36 is a schematic diagram of the assembly of the rear door frame beam and the weather shield of the present invention;

Fig. 37 is a structural schematic diagram of the connection of the lower side sill, the tailgate crossbeam and the longitudinal beam through the second corner code of the present invention;

Fig. 38 is a partially enlarged schematic diagram of B in Fig. 37;

Fig. 39 is a schematic cross-sectional structure diagram of the connection of the lower side sill, the tailgate beam and the rear door frame vertical rod of the present invention;

Fig. 40 is a schematic structural view of the tailgate beam of the present invention;

Fig. 41 is the structural representation of the second angle code of the present invention;

Figure 42 is a schematic diagram of the assembly of the second corner code and the rear door frame pole of the present invention;

Fig. 43 is a structural schematic diagram of the assembly of the rear door frame vertical rod and the rear baffle crossbeam through the third corner code of the present invention;

Figure 44 is a partial enlarged view at C in Figure 43;

Fig. 45 is a structural schematic diagram of the bottom beam of the tailgate of the present invention;

Fig. 46 is a structural schematic diagram of the third angle code of the present invention;

Fig. 47 is a schematic cross-sectional structure diagram of the rear door frame vertical rod and the bottom beam of the rear fender connected by the third corner of the present invention;

Figure 48 is a schematic diagram of the connection between the underframe and the skirt assembly of the present invention;

Fig. 49 is a schematic structural view of the profile of the skirt hinge of the present invention;

Figure 50 is a schematic structural view of the skirt hinge of the present invention;

Fig. 51 is a schematic structural view of introducing a third plate into the profile of the skirt hinge of the present invention;

Fig. 52 is a schematic structural view of another embodiment of the skirt hinge of the present invention;

Fig. 53 is a structural schematic diagram of skirt plate hemming of the present invention;

Fig. 54 is a structural schematic diagram of the connection between the skirt board hemming and the skirt board of the present invention;

Figure 55 is a schematic structural view of the stent of the present invention;

Fig. 56 is a schematic structural view of the protective plate of the present invention;

Fig. 57 is a schematic structural view of the roof of the carriage body of the present invention.

Reference signs: 1, carriage body; 2, carriage plate assembly; 20, top plate; 201, recessed groove; 21, front plate; 22, first side plate; 23, second side plate; 230, first assembly plate 231, side door frame assembly; 2310, side door assembly; 232, second assembly plate; 2311, side door pole; 2312, side door frame beam; 2315, the seventh cutout; 23111, the main body of the side door pole; 23112, the slot of the pole; 3, the rear door assembly; 30, the rear door frame assembly; 300, the rear door frame pole; 301, the rear door frame beam; 3010, the first main body; Connection part; 3012, support part; 3013, support plate part; 3014, first cutout; 3000, pole body; 3001, card slot; 3002, fourth cutout; Assembly; 3033, second main body; 3034, rear platen; 3034, rear platen; 3035, second cutout; 3036, third main body; 3037, transverse tube; 3038, third cutout; 3031, backstop Slab bottom beam; 3032, tailgate; 31, rear door assembly; 4, underframe; 41, underframe panel; 410, inspection hole; 411, inspection hole cover; 400, longitudinal beam; 4000, second vertical plate ; 4001, the second flat part; 4002, the second convex plate; 4003, the second limit protrusion; 401, the beam; 4010, the first vertical part; 4011, the first flat part; 4013, first limit protrusion; 4014, through hole; 5, skirt assembly; 50, skirt plate; 500, front skirt plate; 501, rear skirt plate; 502, skirt plate wrapping; 5020 , the third reinforcement plate; 5021, the limit plate; 51, the skirt hinge; 510, the first hinge arm; 511, the second hinge arm; 514, the hinge shaft; 6, the connector; 60, the first Connection groove; 600, first groove; 601, first riveting hole; 61, second connection groove; 610, second groove; 611, second riveting hole; 7, first reinforcement; 70, first reinforcement Vertical plate portion; 71, the first reinforced flat plate portion; 710, the first chute; 8, right-angle reinforcement; 80, the first reinforcement plate portion; 81, the second reinforcement plate portion; 9, the second reinforcement portion; 90, The second reinforced vertical plate part; 91, the second reinforced flat plate part; 910, the second chute; 10, the front beam; 11, the positioning bar; 110, the positioning hole; Five notches; 121, the first clamping plate part; 122, the second clamping plate part; 123, the first clamping groove; 124, the first connecting part; 125, the first pressing plate part; 1250, strip groove; 126 , the installation part; 127, the third clamping plate part; 1270, the sixth cutout; 128, the second slot; 129, the third slot; 130, the second connection part; 131, the third connection part; 132, the first six connections Board part; 14, side door corner code; 140, through hole; 141, reinforcing rib; 142, installation hole; 15, first corner code; 150, first corner code body; 151, first connecting plate part; An embedding groove; 16, the rain shield; 160, the upper panel slot; 161, the rain shield; 17, the second corner code; 170, the second corner code body; 171, the second connecting plate part; 172, the second Embedding groove; 173, the fourth connecting plate part; 174, the fifth connecting plate part; 18, the third corner code; 180, the third corner code body; 181, the third connecting plate part; 182, the third embedded groove; 19, profiles ; 190, the first plate portion; 191, the second plate portion; 192, the sleeve portion; 1921, the shaft hole; 1922, the transition plate portion; 1923, the limit step; 193, the third plate portion; 25, bracket; 250, first connecting plate; 251, second connecting plate; 252, chamfering; 26, protective plate; 260, main body of protective plate; 261, hem portion of protective plate.

Detailed ways

The present invention will be further described with reference to the accompanying drawings.

This embodiment discloses a new energy logistics vehicle, as shown in Figure 1, Figure 2 and Figure 3, it includes a compartment body 1, and the compartment body 1 includes a compartment panel assembly 2, a rear door assembly 3, an underframe 4 and a skirt Edge assembly5. Wherein, the box panel assembly 2, the rear door assembly 3 and the skirt assembly 5 are all connected to the chassis 4, the box panel assembly 2 and the rear door assembly 3 are arranged above the chassis 4 and jointly form the compartment part, and the skirt assembly Into 5 is located at chassis 4 around.

As shown in Figure 4, the compartment panel assembly 2 comprises a top panel 20, a front panel 21, a first side panel 22 and a second side panel 23, and the first side panel 22, the front panel 21 and the second side panel 23 are respectively connected with Three of the sides of the top plate 20 are connected; wherein, the top plate 20 is used to form the upper panel of the carriage body 1, the front plate 21 is used to form the front panel of the carriage body 1, and the first side plate 22 and the second side plate 23 are respectively used to form the upper panel of the carriage body 1. The left and right panels of the carriage. The first side plate 22, the front plate 21, and the second side plate 23 are fixedly connected to the three sides of the top plate 20 through the connector 6 respectively, and the first side plate 22 and the second side plate 23 are respectively connected to the front plate 21 through the connector 6. The left and right sides are fixedly connected.

As shown in Figure 5 and Figure 6, the connecting piece 6 is a strip profile, and the connecting piece 6 includes a first connecting groove 60 and a second connecting groove 61 extending along the length direction of the profile, the first connecting groove 60 and the second connecting groove The groove depth directions of the connection grooves 61 are perpendicular to each other. The first connecting groove 60 and the second connecting groove 61 are used to cooperate with different boards, and a layer of sealant is provided between the first connecting groove 60 and the second connecting groove 61 and corresponding boards. A first groove 600 and a second groove 610 extend along the length direction of the profile at the outer groove walls of the first connecting groove 60 and the second connecting groove 61 respectively, and the top plate 20, the front plate 21, the first side plate 22 and/or The second side plate 23 is inserted into the first connection groove 60 and/or the second connection groove 61 of the connector 6 and the outer side is fixedly connected by gluing, the first groove 600 and the second groove 610 can increase the surface area of the profile side wall and roughness, so that the adhesive strength and sealing effect of the sealant can be increased; the inner groove walls of the first connecting groove 60 and the second connecting groove 61 are respectively provided with a plurality of first riveting holes 601 and A plurality of second riveting holes 611, the top plate 20, the front plate 21, the first side plate 22 and/or the second side plate 23 are inserted into the first connecting groove 60 and/or the second connecting groove 61 of the connector 6 and the inside passes through The rivet is fixedly connected, so that the corresponding board can be arranged at the first connecting groove 60 or the second connecting groove 61 through the rivet, so that the corresponding board can be fixedly connected to the connecting member 6 conveniently. Through this connection method, not only the connection structure is greatly simplified, the operation is convenient, but also the structural strength is higher.

In this embodiment, the connecting piece 6 is an aluminum profile.

As shown in FIG. 3 , an underframe panel 41 is provided above the underframe 4 , an inspection hole 410 is provided on the underframe panel 41 , and an inspection hole cover 411 is provided at the inspection hole 410 . Wherein, the chassis panel 41 is a glass fiber reinforced polypropylene panel.

As shown in Figures 7 and 8, the underframe 4 includes two longitudinally extending longitudinal beams 400, on which two longitudinal beams 400 are distributed with a plurality of transversely extending beams 401 along their lengths, the two longitudinal beams 400 are parallel to each other and The two ends are aligned respectively, and the multiple beams 401 are parallel to each other and the two ends are respectively aligned. The multiple beams 401 are detachably connected with the two longitudinal beams 400 to form the chassis 4 . The front ends of the two longitudinal beams 400 are fixed to the front beam 10 by fasteners, and the rear ends are fixed to the tailgate beam 302 by fasteners. A plurality of beams 401 are arranged along the longitudinal direction of the longitudinal beam 400 and are positioned by two positioning bars 11. The positioning bars 11 are provided with a plurality of positioning holes 110 at intervals by laser drilling. Both sides of each beam 401 are A through hole 4014 matching the positioning hole 110 is opened, and the beam 401 is positioned and fixed on the positioning bar 11 through the fastener passing through the through hole 4014 and the corresponding positioning hole 110 . The positioning bar 11 is used for installation reference positioning, which is accurate in positioning, convenient for assembly, and firm in installation. The positioning bar 11 is laser drilled and has high precision. It is used as a positioning ruler to facilitate the assembly of the beam 401 and the longitudinal beam 400 on the chassis 4. In addition, The positioning strips 11 are located on the outer sides of the two longitudinal beams 400, and can strengthen and support the outer compartment floor. Both the cross beam 401 and the longitudinal beam 400 are made of C-shaped profiles. The cross beam 401 is arranged above the longitudinal beam 400 and fixedly connected by fasteners. A plurality of cross beams 401 are fixed with chassis panels 41 . The crossbeam 401 and the longitudinal beam 400 are arranged at a right angle and a right-angle reinforcement 8 is installed at the angle position. One side of the right-angle reinforcement 8 is fixedly connected with the crossbeam 401 by a fastener, and the other side of the right-angle reinforcement 8 is connected to the longitudinal The beams 400 are fixedly connected by fasteners. The longitudinal girder 400 and the cross girder 401 of the chassis 4 are made of profiles, which are fixedly connected by fasteners, have a high degree of standardization, are convenient for transportation, and are easy to assemble. The crossbeam 401 and the longitudinal beam 400 are strengthened and fixed by using the right-angle reinforcement 8, so that the structure is firm and the positioning is accurate. The profile of the bottom frame 4 is an aluminum profile with a C-shaped cross-sectional structure. The cross-sectional structure of the profile of the bottom frame 4 includes a vertical plate portion and two flat plate portions arranged on the upper and lower sides of the vertical plate portion. A groove is formed between the two flat parts; a protrusion or a depression is formed on the inner side wall of the groove, and the protrusion or depression extends along the length direction of the profile and is integrally formed with the profile, and the vertical plate part is formed on the inner side wall of the groove A protrusion or depression is formed at the position, and the protrusion or depression extends along the length direction of the profile and is integrally formed with the profile. A reinforcement is embedded in the groove, and the reinforcement is made of aluminum C-shaped profile. The cross-sectional structure of the reinforcement includes a reinforced vertical plate and two reinforced flat plates arranged on the upper and lower sides of the reinforced vertical plate. Concave-convex structures matching the protrusions or depressions on the flat part are formed on the outer wall of the reinforced flat part of the reinforcement; the two flat parts protrude from the notch of the groove to limit the reinforcement from the groove. The limit protrusion protruding from the inside; the reinforced vertical plate part of the reinforcement is close to the vertical plate part or away from the vertical plate part.

As shown in Fig. 8, Fig. 9 and Fig. 10, the beam 401 is made of aluminum profile, and the cross-sectional structure of the profile of the beam 401 includes a first vertical plate part 4010 and two The first flat part 4011; the longitudinal beam 400 is made of aluminum profiles, and the cross-sectional structure of the longitudinal beam 400 includes a second vertical plate part 4000 and two second flat plate parts arranged on the upper and lower sides of the second vertical plate part 4000 4001 ; the right-angle reinforcement 8 is installed at the angle formed by the first vertical plate portion 4010 of the beam 401 and the second vertical plate portion 4000 of the longitudinal beam 400 . As shown in Figures 11 and 12, one side of the right-angle reinforcement 8 is fixedly connected to the first vertical plate portion 4010 of the beam 401 by fasteners, and the other side of the right-angle reinforcement 8 is connected to the second vertical plate of the longitudinal beam 400. The parts 4000 are fixedly connected by fasteners. The right-angle reinforcement 8 includes a first reinforcement plate portion 80 and a second reinforcement plate portion 81, the second reinforcement plate portion 80 is attached to the second vertical plate portion 4000 of the longitudinal beam 400, and the second reinforcement plate is fastened by fasteners. The part 80 is fixed on the longitudinal beam 400, the first reinforcing plate part 81 is pasted on the first vertical plate part 4010 of the cross beam 401, and the first reinforcing plate part 81 is fixed on the cross beam 401 by fasteners, and then the cross beam is realized. 401 and the fixed connection of the stringer 400.

As shown in Fig. 13, Fig. 14 and Fig. 15, the beam 401 is equipped with a first reinforcing member 7, and the first reinforcing member 7 is made of an aluminum C-shaped profile, and the cross-sectional structure of the profile includes a first reinforcing vertical plate portion 70 And two first reinforced flat parts 71 arranged on the upper and lower sides of the first reinforced vertical plate part 70, the first reinforced part 7 is embedded in the groove of the beam 401; the first reinforced vertical plate part of the first reinforced part 7 70 is in close contact with the first vertical plate portion 4010 of the beam 401 , and the upper and lower first reinforcing plate portions 71 of the first reinforcement member 7 are in close contact with the upper and lower first plate portions 4011 of the beam 401 . When the crossbeam 401 and the longitudinal beam 400 are fixedly connected, the first reinforced flat part 71 at the bottom of the first reinforcing member 7 and the second flat part 4001 at the top of the longitudinal beam 400 are respectively located on the upper and lower sides of the first flat part 4011 at the bottom of the crossbeam 401, The second flat part 4001 at the top of the longitudinal beam 400, the first flat part 4011 at the bottom of the cross beam 401, and the first reinforced flat part 71 at the bottom of the first reinforcing part 7 are fixedly connected by fasteners; the right-angle reinforcing part 8 is fixedly connected with the cross beam 401 , the right-angle reinforcing piece 8 and the first reinforcing vertical plate portion 70 of the first reinforcing piece 7 are respectively located on the inner and outer sides of the first vertical plate portion 4010 of the beam 401, and the right-angle reinforcing piece 8 and the first vertical plate portion 4010 of the beam 401 It is fixedly connected with the first reinforcement vertical plate portion 70 of the first reinforcement member 7 through fasteners; the first reinforcement vertical plate portion 70 of the first reinforcement member 7 is close to the first vertical plate portion 4010 of the beam 401 so that the first reinforcement member 7 The cross-sectional structure assembled with the beam 401 is C-shaped, or, as shown in FIG. The cross-sectional structure of the beam 401 after assembly is mouth-shaped. The beam 401 and the longitudinal beam 400 are detachably installed through the first reinforcement 7 and the right-angle reinforcement 8, which is convenient for installation and strong in firmness. When transporting the bottom frame 4, it can be disassembled into longitudinal beams 400 and cross beams 401, which occupy less space and are convenient for transportation. At the same time, the beam 401 can be made of aluminum, and the longitudinal beam 400 and the beam 401 can also be made of aluminum, which reduces the weight of the carriage. The first reinforcing member 7 can increase the load-bearing capacity of the chassis 4, so as to meet the load-bearing requirements of the equipment. Reinforcement parts are used to reinforce the opening connection parts of the crossbeam 401, and the weak parts are strengthened to increase the overall structural strength and bearing weight, while avoiding increasing the manufacturing cost and the weight of the carriage as much as possible.

As shown in Figure 9, Figure 13 and Figure 14, the inner side walls of the two first flat plate parts 4011 of the beam 401 and the outer side walls of the two first reinforced flat parts 71 of the first reinforcement part 7 realize lateral sliding through the concave-convex fitting structure Longitudinal limit: the upper and lower first plate parts 4011 of the beam 401 protrude and form a first limit protrusion 4013 for limiting the first reinforcement member 7 to escape from the groove of the beam 401 . The inner sides of the two first flat parts 4011 of the beam 401 are provided with a first raised plate 4012 along the length direction, and the first reinforcing member 7 is provided with a first sliding groove 710 matched with the first raised plate 4012, so that the first reinforcing member 7 can slide along the first convex plate 4012. The first chute 710 on the first reinforcing flat part 71 of the first reinforcing part 7 cooperates with the first protruding plate 4012 on the first flat part 4011 of the beam 401. The movement of the first convex plate 4012 on the first flat part 4011 restricts the longitudinal movement of the first reinforcement part 7 in the crossbeam 401. The first limiting protrusion 4013 for the longitudinal sliding of the component 7. The first limiting protrusion 4013 on the first flat part 4011 further limits the longitudinal movement of the first reinforcement member 7 in the beam 401 .

As shown in Figure 10, Figure 17 and Figure 18, the longitudinal beam 400 is equipped with a second reinforcement 9, the second reinforcement 9 is made of an aluminum C-shaped profile, and the cross-sectional structure of the profile includes a second reinforced vertical plate 90 and two second reinforcing plate parts 91 arranged on the upper and lower sides of the second reinforcing vertical plate part 90 , and a plurality of second reinforcing parts 9 are distributed at intervals along the longitudinal direction of the longitudinal beam 400 . The second reinforcing part 9 is embedded in the groove of the longitudinal beam 400, the second reinforcing vertical plate part 90 of the second reinforcing part 9 is closely attached to the second vertical plate part 4000 of the longitudinal beam 400, and the second reinforcing part 9 The upper and lower second reinforced flat parts 91 are in close contact with the upper and lower second flat parts 4001 of the longitudinal beam 400; 9 The second reinforced flat part 91 at the top is respectively located on the upper and lower sides of the second flat part 4001 at the top of the longitudinal beam 400, the second flat part 4001 at the top of the longitudinal beam 400, the first flat part 4011 at the bottom of the cross beam 401 and the second reinforced The second reinforced plate portion 91 at the top of the part 9 is fixedly connected by fasteners; when the right-angled reinforced part 8 is fixedly connected with the longitudinal beam 400, the second reinforced vertical plate part 90 of the right-angled reinforced part 8 and the second reinforced part 9 is respectively located in the longitudinal On the inner and outer sides of the second vertical plate portion 4000 of the beam 400 , the right-angle reinforcement 8 , the second vertical plate portion 4000 of the longitudinal beam 400 and the second reinforced vertical plate portion 90 of the second reinforcement member 9 are fixedly connected by fasteners. The second reinforcing member 9 can further increase the bearing capacity of the chassis 4 . Reinforcement parts are used to reinforce the connection parts of the openings of the longitudinal beam 400, and the weak parts are strengthened to increase the overall structural strength and bearing weight, while avoiding increasing the manufacturing cost and the weight of the carriage as much as possible. The second reinforcement vertical plate portion 90 of the second reinforcement member 9 is close to the second vertical plate portion 4000 of the longitudinal beam 400 so that the assembled cross-sectional structure of the second reinforcement member 9 and the longitudinal beam 400 is C-shaped, or the second reinforcement member 9 The second reinforced vertical plate portion 90 is far away from the second vertical plate portion 4000 of the longitudinal beam 400 so that the cross-sectional structure of the assembled second reinforcing member 9 and the longitudinal beam 400 is mouth-shaped.

As shown in Fig. 10, Fig. 17 and Fig. 18, the inner side wall of the second flat plate part 4001 of the longitudinal beam 400 and the outer side wall of the second reinforced flat part 91 of the second reinforcement part 9 realize longitudinal sliding and lateral positioning through a concave-convex fitting structure The upper and lower second plate parts 4001 of the longitudinal beam 400 are protrudingly formed with a second limiting protrusion 4003 for restricting the second reinforcement member 9 from coming out of the groove of the longitudinal beam 400 . The inner sides of the two second flat parts 4001 of the longitudinal beam 400 are provided with a second convex plate 4002 along the length direction, and the second reinforcing member 9 is provided with a second sliding groove 910 matching with the second convex plate 4002. The two reinforcing pieces 9 can slide along the second convex plate 4002 . The second chute 910 on the second reinforcing flat part 91 of the second reinforcing part 9 cooperates with the second convex plate 4002 on the second flat part 4001 of the longitudinal beam 400, which facilitates the second reinforcing part 9 to move along the The movement of the second convex plate 4002 on the second flat part 4001 restricts the longitudinal movement of the second reinforcing member 9 in the longitudinal beam 400 on the other hand. The upper and lower second plate parts 4001 of the longitudinal beam 400 protrude opposite to each other, and a second limiting protrusion 4003 for limiting the longitudinal sliding of the second reinforcement member 9 protrudes. The second limiting protrusion 4003 on the second flat part 4001 further limits the longitudinal movement of the second reinforcing member 9 in the longitudinal beam 400 .

The method for assembling the underframe 4 includes the following steps: 1) arrange the two longitudinal beams 400 in parallel and align the two ends, and fix the front and rear beams 401 on the two longitudinal beams 400 by fasteners; 2) connect the two longitudinal beams 400 The positioning bar 11 is fixedly connected to the two beams 401, wherein the through holes 4014 on the two beams 401 are aligned with the corresponding positioning holes 110 on the positioning bar 11 and fixed by fasteners; 3) the remaining beams 401 is fixed on these two positioning bars 11, wherein, the through holes 4014 on these beams 401 are aligned with the corresponding positioning holes 110 on the positioning bars 11 and positioned and fixed by fasteners; 4) pass the remaining beams 401 through the fastening The fasteners are fixed on two stringers 400 .

As shown in FIG. 4 , the first side panel 22 is connected to the chassis panel 41 through the side rail 12 , and the second side panel 23 is connected to the chassis panel 41 through the side rail 12 . Compared with the prior art, the sill 12 is integrally formed and made of aluminum profile, which has stronger stability and is easy to process.

As shown in Figure 19 and Figure 20, the side door assembly includes the connector 6, the side sill 12, the first assembly plate 230, the second assembly plate 232 and the side door frame assembly 231, the first assembly plate 230 and the second assembly plate 232 The upper part is connected with the upper panel of the compartment through the connecting piece 6, and the lower part of the first assembly plate 230 and the second assembly plate 232 is connected with the underframe 4 of the compartment through the side rail 12; the first assembly plate 230 and the second assembly plate 232 are respectively fixed On both sides of side door frame assembly 231, side door frame assembly 231 is installed with side door assembly 2310; The upper part of the crossbeam 2312 is inserted into the first connecting groove 60 of the connector 6 and fixed by fasteners; the upper end of the side door vertical rod 2311 is fixedly connected with the side door frame crossbeam 2312 through the side door corner bracket 14, and the lower end of the side door vertical rod 2311 is inserted into the lower side beam 12 in the second slot 128 and fixed by fasteners. The lower side sill 12 connected to the underframe 4 on one side of the compartment with the side door adopts an integrated structure, and the side door frame assembly 231 is combined with the upper connector 6 of the side panel of the compartment and the lower side sill 12 to improve the overall structural strength of the compartment and the side door . The lower side sill of the prior art is composed of three spliced parts, which is unstable. The side sill of the present invention is integrally formed, and its stability is stronger; in addition, the side door vertical rod is plugged with the inner and outer walls of the lower side sill and matched in size, which is convenient for installation. Simple structure.

As shown in Fig. 21 and Fig. 22, the side sill 12 is made of aluminum profiles, the cross-sectional structure of the profile of the side sill 12 includes an upright base plate 120, and the middle part of the base plate 120 extends inward to form a first vertical to the base plate 120. A snap-fit plate portion 121 , the bottom of the base plate portion 120 extends inwardly to form a second snap-fit plate portion 122 perpendicular to the base plate portion 120 , the first snap-fit plate portion 121 and the second snap-fit plate portion 122 are located on the base plate portion 120 On the same side, a first card slot 123 for inserting the beam 401 of the chassis 4 is formed between the first clamping plate portion 121 and the second clamping plate portion 122, and the first clamping slot 123 is used for clamping and fixing the beam 401 The end portion of the first clamping plate portion 121 extends inwardly relative to the base plate portion 120 greater than the distance inwardly extending the second clamping plate portion 122 relative to the base plate portion 120, thus, from the first clamping plate portion 121 The bottom of the extended first pressing plate part 125 is empty, which is convenient for installing and fixing the fasteners. The first clamping plate portion 121 extends away from the second clamping plate portion 122 to form a first connecting portion 124 , and the upper portion of the first connecting portion 124 extends toward a direction close to the substrate portion 120 with a mounting portion 126 . A side close to the base plate 120 extends upwards to form a third clamping plate portion 127 , the third clamping plate portion 127 is arranged parallel to the base plate portion 120 , and a hole is formed between the third clamping plate portion 127 and the base plate portion 120 for insertion. Connect the second draw-in groove 128 of the compartment side plate; the top of the first connecting portion 124 extends away from the direction of the base plate portion 120 to form a first pressing plate portion 125, as shown in Figure 21 and Figure 22, the first pressing plate portion 125 and the first pressing plate portion 125 A third engaging slot 129 for engaging the chassis panel 41 is formed between one of the connecting portions 124 . Wherein, the end of the crossbeam 401 of the chassis 4 is inserted into the first slot 123 and is fixedly connected with the first snapping plate portion 121 and/or the second snapping plate portion 122 through fasteners, and the side of the chassis panel 41 The edge is inserted into the third clamping groove 129 and fixedly connected with the first pressing plate portion 125 by a fastener, and the lower side of the compartment side plate is inserted into the second clamping groove 128 and connected with the third clamping plate portion 127 and/or the base plate portion 120 is fixedly connected by fasteners. The first pressing plate portion 125 defines a strip-shaped groove 1250 along its length, and the strip-shaped groove 1250 is filled with sealant. The first pressing plate portion 125 and the chassis panel 41 are bonded together with a sealant, which increases the sealing performance between the first pressing plate portion 125 and the chassis panel 41 .

Another embodiment of the lower side sill 12, as shown in FIG. , the second connecting portion 130 and the first clamping plate portion 121 form a tubular structure, the first clamping plate portion 125 is provided with a plurality of convex lines along the length direction of the side sill 12 , and the second clamping plate portion 122 is far away from the base plate portion 120 One end of the third connecting portion 131 extends downward to form an L-shaped third connecting portion 131 , and a sixth connecting plate portion 132 extends downward from the end of the third connecting portion 131 away from the second clamping plate portion 122 .

As shown in Figure 24 and Figure 25, the side door frame beam 2312 is made of tubular profiles, including the side door frame beam main body 23121 and the connecting pipe part 23122 for inserting the connector 6; the side door frame beam main body 23121 is thicker than the connecting pipe part The thickness of 23122 thus forms a step at the joint position of the two; the cross-sectional structure of the side door frame beam main body 23121 is L-shaped, and the thickness of the lower part of the side door frame beam main body 23121 is greater than that of the upper part. The connecting pipe part 23122 is inserted into the first connecting groove 60 of the connecting piece 6 and fixed by a fastener. In this way, the structure of the door frame is stronger, and the deeper the door frame is, the easier it is to seal and install the door panel more firmly.

As shown in FIG. 26 , the side door pole 2311 includes a hollow L-shaped tubular structure side door pole body 23111 , and one end of the side door pole body 23111 extends outward for inserting the first assembly plate 230 or the second assembly plate 232 . The plug-in part is formed with a vertical bar slot 23112 for inserting the first component plate 230 or the second component plate 232; The position forms a step; the cross-sectional structure of the side door pole main body 23111 is L-shaped, and the thickness of the lower part of the side door pole main body 23111 is greater than that of the upper part. In this way, the structure of the door frame is stronger, and the deeper the door frame is, the easier it is to seal and install the door panel more firmly.

As shown in FIG. 20 , the two ends of the side door frame beam 2312 are respectively connected to the side door poles 2311 through the side door corner brackets 14 . As shown in Figure 20 and Figure 27, the side door corner bracket 14 is in an inverted L shape, and the inner side of the side door corner bracket 14 is provided with a plurality of through holes 140, and reinforcing ribs 141 are fixed between adjacent through holes 140, each rib The end of 141 is provided with a mounting hole 142, the setting of the through hole 140 can save material, and the setting of the mounting hole 142 can increase the strength. One end of the side door corner bracket 14 is inserted on the side door frame beam 2312, and the other end is inserted on the side door pole 2311, and the side door pole 2311 and the side door frame beam 2312 are fixedly connected by fasteners. The side door frame crossbeam 2312 is connected with two side door uprights 2311 through the side door corner bracket 14, and its assembly operation is simple and more stable.

As shown in FIG. 28 , the side sill 12 connecting the side door assembly and the chassis panel 41 needs to be notched, so as to be used to cooperate with the side door frame assembly 231 . In this way, the second clamping groove 128 on the side wall of the side sill 12 can be avoided. The door sill is formed by protruding from the bottom frame panel 41, so that the goods can be passed in and out unchanged. The lower ends of the two side door uprights 2311 are arranged on the side sill 12 , the base plate portion 120 of the side sill 12 is cut with a fifth notch 1200 at the position matched with the side door frame assembly 231 , and the third clamping plate portion 127 of the side sill 12 A sixth notch 1270 is cut at the position matched with the side door frame assembly 231, and a seventh notch 2315 matched with the fifth notch 1200 and the sixth notch 1270 is cut at the lower end of the vertical bar slot 23112 of the side door vertical bar 2311. After the seventh notch 2315 of the bar clamping groove 2314 is matched with the fifth notch 1200 and the sixth notch 1270, that is, the lower end of the side door vertical rod 2311 is inserted into the second slot 128 of the lower side sill 12 through the fifth notch 1200 and the sixth notch 1270 Inner and fixedly connected with the third clamping plate portion 127 and/or the base plate portion 120 by fasteners. The first component plate 230 and the second component plate 232 on the side door assembly are clipped in the second clip slot 128 of the side rail 12 . The two side door vertical rods 2311 are inserted and matched with the inner and outer walls of the side rail 12, which is convenient for installation and simple in structure.

Assembly of the side door assembly: 1) The two ends of the side door frame beam 2312 are respectively connected to the side door pole 2311 through the side door angle bracket 14 and fixed by fasteners, thereby completing the assembly of the side door frame assembly 231; 1) Put the side door frame beam 2312 on The connecting pipe part 23122 of the connecting piece 6 is inserted into the first connecting groove 60 of the connecting piece 6, and fixed by the fastener; 3) The lower ends of the two side door vertical rods 2311 are respectively inserted into the second slot 128 of the side rail 12 4) Fix the first assembly plate 230 and the second assembly plate 232 on both sides of the side door frame assembly 231 respectively.

As shown in Figure 29, the rear door assembly 3 includes a rear door frame assembly 30 and a rear door assembly 31, the rear door frame assembly 30 is used to cooperate with the compartment panel assembly 2, the underframe 4 and the skirt assembly 5 at the same time, and the rear door assembly 31 is located on Rear door frame assembly 30 places. The rear door frame assembly 30 is connected with the first side plate 22 and the second side plate 23 through the rear door frame vertical rod 300, the rear door frame assembly 30 is connected with the upper panel through the rear door frame beam 301, and the rear door frame assembly 30 is connected with the bottom frame panel. 41 is connected by tailgate beam 302 .

As shown in FIG. 29 , FIG. 30 and FIG. 31 , the rear door frame assembly 30 includes two rear door frame uprights 300 vertically arranged on the left and right sides, a rear door frame beam 301 and a tailgate assembly 303 . The rear door frame pole 300 is made of aluminum profiles, and includes a hollow tubular pole body 3000. One side of the pole body 3000 is provided with a slot 3001 for clamping side panels along its length direction. The main body of the rear door frame pole of the prior art adopts plate bending to form a hollow L-shape. The main body of the pole includes a main body and a slot perpendicular to the main body. A reinforcement plate is welded between the slots. However, Internal welding is difficult. The rear door frame vertical rod 300 of the present invention is made into profiled material by mold opening, on the one hand its cost of manufacture is low, on the other hand it is easy to install. The upper ends of the two rear door frame poles 300 are fixedly connected with the left and right ends of the rear door frame beam 301 through the first angle bracket 15 respectively, and the bottom of the two rear door frame poles 300 is equipped with a tailgate assembly 303 . The rear door assembly 31 is disposed between the rear door frame beam 301 and the tailgate assembly 303 .

As shown in FIG. 31 and FIG. 32 , the upper end of the rear door frame pole 300 is connected to the rear door frame beam 301 and the connecting piece 6 through the first corner bracket 15 . As shown in Figure 35 and Figure 36, the rear door frame beam 301 includes a first main body part 3010 in a tubular structure, the first main body part 3010 extends upward along its length direction to form a fourth connecting part 3011, the fourth connecting part 3011 is used for The rain shield 16 is fixed, and a supporting plate portion 3013 is formed on the first main body portion 3010 extending away from the fourth connecting portion 3011 , and the supporting plate portion 3013 is used to support the upper panel. The weather shield 16 is fixedly installed on the fourth connecting portion 3011 of the rear door frame beam 301, so that an upper panel clamping groove for clamping the upper panel of the compartment is formed between the weather shield 16 and the support plate portion 3013 of the rear door frame beam 301 160; Wherein, the support plate part 3013 and the first main body part 3010 are connected through the support part 3012, and the support part 3012 is a tubular structure extending from one side of the first main body part 3010; the fourth connecting part 3011 is formed from the first A tubular structure formed by extending one side of the main body 3010; the rear door frame beam 301 is made of aluminum profiles, the rear door frame beam 301 made of aluminum profiles is easy to process, and can reduce the weight of the vehicle body. A sealant is provided between the upper panel and the upper panel slot 160 and fixed by fasteners, and the rain shield 16 extends outward to form a rain shield 161 above which shields the rear door assembly 31 .

As shown in Figure 32, Figure 33 and Figure 34, the first corner bracket 15 is made of aluminum profile, including the first corner bracket body 150 which is used to connect the rear door frame beam 301 and has a square tubular structure, the first corner bracket body A concave-convex structure is formed on the side wall of 150, and the concave-convex structure extends along the extending direction of the profile. The size of the first corner code body 150 is smaller than the first body part 3010 of the rear door frame crossbeam 301, and the first corner code body 150 can extend into the tubular structure of the first body part 3010, and one side of the first corner code body 150 faces A first connecting plate portion 151 is formed on the outer extension for connecting the rear door frame upright 300 , and a concave-convex structure is formed on the side wall of the first connecting plate portion 151 , and the concave-convex structure extends along the extending direction of the profile. The angle between the first connecting plate portion 151 and the first bracket body 150 forms a first slot 152 for inserting the rear door frame upright 300 . The first angle bracket body 150 is inserted into the nozzle of the first body part 3010 of the rear door frame beam 301, and the first angle bracket 15 is fixedly connected with the rear door frame beam 301 by fasteners, and the pole body 3000 is embedded in the first angle bracket 15 In the first slot 152 of the rear door frame, the first connecting plate part 151 of the first corner bracket 15 and the pole body 3000 of the rear door frame pole 300 are fixedly connected by fasteners, thereby completing the erection of the rear door frame beam 301 and the rear door frame. The connection of the rod 300; the rear door frame vertical rod 300 and the rear door frame crossbeam 301 are fixedly connected by a corner code, which is convenient for assembly, firm in connection and low in cost. Wherein, as shown in Figure 35, the two ends of rear door frame beam 301 are cut with first notch 3014, and the first angle bracket body 150 is inserted in the tubular structure of rear door frame beam 301, and the first connecting plate portion of first angle bracket 15 151 corresponds to the first cutout 3014, the pole body 3000 of the rear door frame pole 300 is embedded in the first slot 152, and the fastener passes through the first main body portion 3010 of the rear door frame beam 301 and the first corner bracket 15 of the first A connecting plate portion 151 and the pole body 3000 complete the connection between the rear door frame beam 301 and the rear door frame pole 300 . The hidden corner code is adopted, which is convenient for installation, high connection strength and beautiful appearance. In addition, the connecting piece 6 and the rear door frame upright 300 are fixed by bolts, thereby completing the assembly of the rear door frame beam 301 , the rear door frame upright 300 and the connecting piece 6 .

As shown in FIG. 29 , the tailgate assembly 303 includes a horizontally arranged tailgate beam 302 , a tailgate bottom beam 3031 , and a tailgate 3032 arranged between the tailgate beam 302 and the tailgate bottom beam 3031 . The tailgate beam 302 is connected to the rear door frame upright 300 through the second angle bracket 17 . As shown in Figure 37 and Figure 38, the tailgate beam 302 is fixed on the ends of the two longitudinal beams 400 on the underframe 4, as shown in Figure 40, the tailgate beam 302 is made of aluminum profiles, including The second body part 3033 of the tubular structure, one side of the second body part 3033 extends outwards to form a rear pressure plate part 3034 for pressing and fixing the chassis panel 41, and the crossbeam 401 cooperates with the rear pressure plate part 3034 to secure the chassis panel 41 Clamped between the beam 401 and the rear platen part 3034 .

As shown in Figure 41, the second corner bracket 17 is made of aluminum profile, including the second corner bracket body 170 which is used to connect the tailgate beam 302 and has a square tubular structure. The square tube-shaped second corner bracket 17 is convenient For drilling and installation, a concave-convex structure is formed on the side wall of the second corner bracket body 170, and the concave-convex structure extends along the extending direction of the profile. The size of the second corner code body 170 is smaller than the second body part 3033 of the tailgate beam 302, and the second corner code body 170 can extend into the tubular structure of the second body part 3033, and one side of the second corner code body 170 A second connecting plate portion 171 is formed extending outward for connecting the rear door frame upright 300 , and a concave-convex structure is formed on the side wall of the second connecting plate portion 171 , and the concave-convex structure extends along the extending direction of the profile. The angle between the second connecting plate portion 171 and the second bracket body 170 forms a second slot 172 for inserting the rear door frame upright 300 . The tailgate crossbeam 302 and the second corner bracket 17 are made of aluminum profiles respectively, wherein, as shown in Figure 39, Figure 40 and Figure 41, the two ends of the tailgate crossbeam 302 are cut with a second slit 3035, the second The corner bracket body 170 is inserted into the nozzle of the tailgate crossbeam 302, the second connecting plate part 171 of the second corner bracket 17 corresponds to the second cutout 3035, the pole body 3000 is embedded in the second slot 172, and the fastener wears After the second body part 3033 of the tailgate crossbeam 302, the second connecting plate part 171 of the second corner bracket 17 and the pole body 3000, the connection between the tailgate crossbeam 302 and the rear door frame pole 300 is completed, and the tailgate crossbeam 302 and The rear door frame upright bar 300 is fixedly connected by corner codes, which is easy to assemble and firmly connected. The second connecting plate portion 171 of the second corner bracket 17 extends away from the side of the second corner bracket body 170 to form a fourth connecting plate portion 173 for connecting the lower side sill 12, and the fourth connecting plate portion 173 is connected to the second connecting plate. part 171 is arranged vertically, the fourth connecting plate part 173 is inserted into the first slot 123 of the side sill 12 and is fixedly connected with the base plate part 120 of the side sill 12 by fasteners; the front part of the fourth connecting plate part 173 is embedded in the lower side The first slot 123 of the beam 12 is attached to the base plate part 120, and the bolt passes through the base plate part 120 and the fourth connecting plate part 173, so that the first lower side beam 12 passes through the second corner bracket 17 and the tailgate cross member 3030, the rear door frame vertical rod 300 is fixedly connected; the inner wall of the slot 3001 of the rear door frame vertical rod 300 is cut with a fourth cutout 3002 at a position corresponding to the rear fender beam 302, and the rear part of the fourth connecting plate part 173 is inserted into the rear door frame The fourth notch 3002 of the pole 300 is fixedly connected with the outer wall of the card slot 3001 by fasteners, so that the second corner bracket 17 is fixedly connected with the rear door frame pole 300 again, and through the fourth connecting plate of the second corner bracket 17 Part 173 realizes the fixed connection of the rear door frame upright 300 and the side sill 12, adopts the second corner code 17 to realize the fixed connection of the tailgate crossbeam 3030, the rear door frame upright 300 and the side sill 12 simultaneously, and the structure is firm and reliable. A fifth connecting plate portion 174 for connecting the crossbeam 401 is formed on the fourth connecting plate portion 173 extending from the side away from the second connecting plate portion 171 toward the direction close to the second corner bracket body 170 . The fifth connecting plate portion 174 of the second corner bracket 17 can be fixedly connected to the crossbeam 401 of the chassis 4 through fasteners, which can further strengthen the connection strength and integrity between the rear door frame assembly 30 and the chassis 4 and the compartment.

Hidden profile corner codes are used to facilitate the fixed connection between the rear door frame upright 300, the rear fender beam 3030 and the side rail 12, and the connection strength is high and the appearance is beautiful. The underframe panel 41 is fixed on the plurality of beams 401, the rear plate portion 3034 of the tailgate beam 3030 is clamped to the end of the underframe panel 41, and the multiple beams 401 are connected to the rear plate portion 3034 on the tailgate beam 3030. Cooperate to clamp and fix the chassis panel 41 between the beam 401 and the rear plate portion 3034 .

As shown in FIG. 43 and FIG. 44 , the bottom beam 3031 of the tailgate is fixedly connected to the bottom end of the rear door frame pole 300 through the third corner 18 . As shown in FIG. 45 , the bottom beam 3031 of the rear fender is made of aluminum profiles, and includes a third main body 3036 in a tubular structure, and a horizontal tube 3037 is provided on the bottom of the third main body 3036 along its length direction. As shown in Figure 46, the third corner bracket 18 is made of aluminum profiles, including a third corner bracket body 180 in a square tubular structure for connecting to the bottom beam 3031 of the tailgate, and the side wall of the third corner bracket body 180 is formed with Concave-convex structure, the concavo-convex structure extends along the profile extension direction. The size of the third corner code body 180 is smaller than the third body part 3036 of the tailgate bottom beam 3031, and the third corner code body 180 can extend into the tubular structure of the third body part 3036, and one side of the third corner code body 180 faces outward A third connecting plate portion 181 is extended to connect the rear door frame upright 300 , and a concave-convex structure is formed on the side wall of the third connecting plate portion 181 , and the concave-convex structure extends along the extending direction of the profile. The angle between the third connecting plate portion 181 and the third bracket body 180 forms a third slot 182 for inserting the rear door frame upright 300 . The third corner bracket body 180 is inserted into the nozzle of the third body part 3036 of the tailgate bottom beam 3031, and the third corner bracket 18 is connected with the tailgate bottom beam 3031 by fasteners, and the pole body 3000 is embedded in the third slot 182, and fixedly connect the third connecting plate portion 181 of the third corner bracket 18 and the pole body 3000 of the rear door frame pole 300 through fasteners, thereby completing the connection between the rear tailgate bottom beam 3031 and the rear door frame pole 300 The two ends of the rear fender bottom beam 3031 are cut with a third notch 3038, the third corner code body 180 is inserted into the nozzle of the rear fender bottom beam 3031, and the third connecting plate portion 181 of the third corner code 18 is in contact with the third notch 3038 Correspondingly, the pole body 3000 is embedded in the third slot 182, and the fastener passes through the third main body portion 3036 of the bottom beam 3031 of the tailgate, the third connecting plate portion 181 of the third corner bracket 18 and the pole body 3000 to complete the tailgate The connection between the bottom beam 3031 and the rear door frame pole 300 . The hidden profile corner code is used to facilitate the fixed connection between the rear door frame upright 300 and the bottom beam 30312 of the rear fender, and the connection strength is high and the appearance is beautiful.

Assembly of the rear door assembly 3: 1) the two ends of the rear door frame beam 301 are respectively connected to the rear door frame vertical rod 300 through the first corner code 15 and fixedly connected by fasteners; 2) the lower ends of the two rear door frame vertical rods 300 pass through the rear door frame The tailgate assembly 303 is connected, and the tailgate beam 302 at the upper end of the tailgate assembly 303 is respectively connected to the rear door frame pole 300 through the second corner code 17 and fixedly connected by a fastener, and the tailgate bottom at the lower end of the tailgate assembly 303 The beams 3031 are respectively connected to the rear door frame poles 300 through the third angle brackets 18 and are fixedly connected by fasteners; 3) Finally, the rear door assembly 31 is installed between the rear door frame beam 301 and the tailgate assembly 303 .

As shown in Figure 48, the skirt assembly 5 includes a skirt panel 50 located on the underframe 4, the skirt panel 50 includes a front skirt panel 500 and a rear skirt panel 501, and the front skirt panel 500 passes through the skirt hinge 51 is hinged at the lower part of the compartment, and the rear skirt plate 501 is fixedly connected with the lower part of the compartment. The skirt board 50 is divided into a fixed rear skirt board 501 and a movable front skirt board 500. When the logistics vehicle is overhauled, only the front skirt board 500 is required to be rotated, which is easy to operate.

As shown in Figures 49 and 50, the skirt hinge 51 is cut from a profile 19, which is an aluminum profile, which is easy to process and includes a first plate portion 190, a second plate portion 191 and a sleeve portion 192 The sleeve part 192 is provided with a shaft hole 1921 for installing the hinge shaft 514. The extension direction of the shaft hole 1921 is consistent with the extension direction of the profile. and both are perpendicular to each other, and the sleeve portion 192 is located outside the angle formed by the first plate portion 190 and the second plate portion 191 . The skirt hinge 51 is formed by cutting the profile 19, and its processing technology is relatively simple. The transition plate portion 1922 connecting the sleeve portion 192 to the first plate portion 190 is perpendicular to the first plate portion 190 , and a limiting step 1923 is formed between the transition plate portion 1922 and the second plate portion 191 . In this way, the limiting step 1923 is used to position the skirt panel 50, so that when the skirt hinge 51 is installed between the skirt panel 50 and the lower side rail 12 of the vehicle compartment, a gap is formed between the first plate portion 190 and the edge of the skirt panel 50. Clearance, in order to avoid affecting the lowering of the skirt plate 50 after the fastener is installed.

The skirt hinge 51 is cut from the same profile segment, including a first hinge arm 510 and a second hinge arm 511 hinged by a hinge shaft 514, and the first hinge arm 510 includes at least the sleeve of the profile segment Part 192 and a part of the first plate part 190, the second hinge arm 511 at least includes another part of the sleeve part 192 of the profile section and a part of the second plate part 191; wherein, the first hinge arm 510 and The crossbeam 401 of the compartment underframe 4 or the side sill 12 is fixedly connected by a fastener, and the second hinge arm 511 is fixedly connected with the front skirt plate 500 by a fastener, so that the cutting process is convenient, and the hinge is reliable and firm. The first hinge arm 510 is matched with the notch cut and formed at the middle position of the second hinge arm 511; the profile 19 is an aluminum profile. Aluminum profiles are easy to process.

In another embodiment of the skirt hinge 51, as shown in Figures 51 and 52, the first plate part 190 of the profile 19 is extended to form a third plate part 193, the third plate part 193 and the second plate part 191 Parallel and all located below the first plate portion 190, a slot 1931 for inserting the front skirt plate 500 is formed between the third plate portion 193 and the second plate portion 191; the skirt hinge 51 is cut by the same profile section formed, including a first hinge arm 510 and a second hinge arm 511 hinged by a hinge shaft 514, and the first hinge arm 510 includes at least a part of the sleeve portion 192 of the profile section and the first plate portion 190 A part of the second hinge arm 511 includes at least another part of the sleeve part 192 of the profile section, a part of the second plate part 191 and a part of the third plate part 193; wherein, the first hinge arm 510 and the bottom of the compartment The beam 401 of the frame 4 or the side beam 12 is fixedly connected by a fastener, and the second hinge arm 511 is fixedly connected with the front skirt panel 500 by a fastener. In this way, the third plate portion 193 and the second plate portion 191 clamp the front skirt plate 500 from both sides, and the fixing is more firm.

As shown in Figure 53 and Figure 54, part of the edge of the front skirt panel 500 and the rear skirt panel 501 is wrapped with a skirt panel wrapping 502, the cross section of the skirt panel wrapping 502 is U-shaped, and the skirt panel wrapping 502 Clamped and fixed on the edge positions of the front skirt board 500 and the rear skirt board 501; the skirt board wrapping 502 can well protect the board, increase the strength of the board, and avoid damage to the board due to collision. The outer side of the skirt plate edging 502 at the front and rear ends of the front skirt plate 500 extends outward to limit the limit plate 5021; the limit plate 5021 respectively presses against the plates at the front and rear ends and the rear skirt plate 501 to prevent the front skirt plate 500 from turning over transition. A third reinforcement plate 5020 extends outward from the inner side of the skirt edge 502 at the front and rear ends of the front skirt plate 500 , and the third reinforcement plate 5020 is fixed on the inner side of the front skirt plate 500 by fasteners. In this way, the third reinforcement plate 5020 makes the skirt plate wrapping 502 at the front and rear ends more firmly fixed on the plate, so as to avoid the two limit plates 5021 on the skirt plate wrapping 502 when turning the front skirt plate 500 for a long time. It often collides with the plate material at the front end and the rear skirt plate 501 at the rear end, causing the skirt plate wrapping 502 to loosen or fall off. The front skirt panel 500 can be locked with the compartment by a locking mechanism and cannot be turned over.

The rear end of the rear skirt panel 501 is inserted into the rear door frame pole 300 of the compartment and is fixedly connected by fasteners, and the front end of the rear skirt panel 501 is fixed on the crossbeam 401 or the side rail 12 of the compartment chassis 4 through the bracket 25 , as shown in Figure 55, the bracket 25 is L-shaped, including the first connecting plate 250 fixed on the cross member 401 or the side sill 12 and the second connecting plate 251 fixed on the inner side of the rear skirt plate 501; the first connecting plate 250 A chamfer 252 is provided at the joint with the second connecting plate 251, so that the rear skirt plate 501 is firmly fixed and easy to install.

As shown in Fig. 48 and Fig. 56, a protective plate 26 is provided at the inner side of the box panel assembly 2 above the underframe 4, and the protective plate 26 includes a protective plate for attaching to the front plate 21, the first side plate 22 or the second side plate 23. The protective plate main body 260 is combined, and the protective plate main body 260 is connected with the front plate 21, the first side plate 22 or the second side plate 23 by rivets; The hem portion 261 of the protective plate is connected with the fasteners of the chassis 4 .

The top board 20 is a monolithic glass fiber reinforced polypropylene panel or polypropylene honeycomb board material that is pre-pressed to produce arched deformation or is provided with a concave groove 201, which can prevent the top board 20 from collapsing.

The fasteners described in the present invention may be one or more of bolts, screws, rivets and the like.

In this embodiment, the protective plate main body 260 is made of wear-resistant aluminum plate.

In this embodiment, mudguards are also provided at the places corresponding to the wheels of the underframe 4 .

In this embodiment, the skirt board 50, the top board 20, the front board 21, the first side board 22 and the second side board 23 are all composed of polypropylene honeycomb boards composited with glass fiber reinforced polypropylene panels on the upper and lower sides, wherein the polypropylene The thickness of the propylene honeycomb panel can be selected from 15 to 35 mm, and the thickness of the glass fiber reinforced polypropylene panel can be selected from 1.5 to 2.5 mm.

In this embodiment, the glass fiber-reinforced polypropylene panel is formed by hot-pressing the blended textile fabric of glass fiber and polypropylene filament.

When the compartment body in this embodiment is assembled, it mainly includes the following steps:

(1) Assembling the underframe 4;

(2) The top plate 20, the front plate 21, the first side plate 22 and the second side plate 23 are made into the box plate assembly 2 by means of fasteners through the connector 6;

(3) rear door frame assembly 30 and rear door assembly 31 are assembled into rear door assembly 3;

(4) Assemble the box panel assembly 2, the rear door assembly 3, and the skirt assembly 5 with the underframe 4 in sequence.

(5) The front skirt panel 500 is hinged on the side rail 12 through the skirt hinge 51 , and the rear skirt panel 501 is clamped and fixed on the bottom rail 12 to complete the assembly of the skirt assembly 5 .

Wherein, the side door assembly 2310 and the rear door assembly 31 can be installed last.

The specified directions in this specific embodiment are only for the convenience of expressing the positional relationship among the various components and the mutual cooperation relationship. The above descriptions are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. a kind of chassis of new energy logistic car, the stringer (400) longitudinally extended including at least two, on two stringers (400) The more crossbeams being laterally extended (401) are distributed along its length, it is characterized in that: crossbeam (401) and stringer (400) are all made of The C-shaped profile in cross section is made, and crossbeam (401) setting is fixedly connected above stringer (400) and through fastener, crossbeam (401) it is arranged and is equipped with right angle reinforcing member (8) in angular position, right angle reinforcing member (8) with the rectangular angle of stringer (400) Side be fixedly connected with crossbeam (401) by fastener, the other side of right angle reinforcing member (8) and stringer (400) pass through fastening Part is fixedly connected.

2. the chassis of a kind of new energy logistic car according to claim 1, it is characterized in that: the crossbeam (401) uses aluminium Matter profile is made, and the cross section structure of the cross beam sectional bar includes the first vertical plate part (4011) and is arranged in the first vertical plate part (4011) Two the first flat parts (4010) of upper and lower two sides；The stringer (400) is made of aluminium section, the section of the longitudinal beam section bar Structure includes two the second flat parts of the second vertical plate part (4001) and setting in the second vertical plate part (4001) two sides up and down (4000)；The right angle reinforcing member (8) is mounted on the first vertical plate part (4011) of crossbeam (401) and the second of stringer (400) stands Angular position formed by plate portion (4001), the side of right angle reinforcing member (8) pass through with the first vertical plate part (4011) of crossbeam (401) Fastener is fixedly connected, and the other side of right angle reinforcing member (8) and second vertical plate part (4001) of stringer (400) are solid by fastener Fixed connection.

3. the chassis of a kind of new energy logistic car according to claim 2, it is characterized in that: the crossbeam (401) is provided with First reinforcing member (7), the first reinforcing member (7) are made of the C-shaped profile of aluminum, and the cross section structure of the profile includes the first reinforcing Two first the reinforcings flat parts (70) that vertical plate part (71) and setting reinforce vertical plate part (71) two sides up and down first, first adds Firmware (7) is embedded in the groove of the crossbeam (401)；When crossbeam (401) is fixedly connected with stringer (400), the first reinforcing member (7) the second flat part (4000) that the first of bottom is reinforced at the top of flat part (70) and stringer (400) is located at crossbeam (401) The two sides up and down of the first flat part (4010) of bottom, the second flat part (4000), crossbeam (401) bottom at the top of stringer (400) First flat part (4010) in portion and the first of the first reinforcing member (7) bottom reinforce flat part (70) and connect by the way that fastener is fixed It connects；When right angle reinforcing member (8) is fixedly connected with crossbeam (401), the first reinforcing of right angle reinforcing member (8) and the first reinforcing member (7) Vertical plate part (71) is located inside and outside the first vertical plate part (4011) of crossbeam (401), right angle reinforcing member (8), crossbeam (401) the first vertical plate part (4011) is reinforced vertical plate part (71) with the first of the first reinforcing member (7) and is fixedly connected by fastener； The first of first reinforcing member (7) reinforces vertical plate part (71) close to the first vertical plate part (4011) of crossbeam (401) to which first reinforces Cross section structure after part (7) and crossbeam (401) assembling is C-shaped, alternatively, the first of the first reinforcing member (7) reinforces vertical plate part (71) The first vertical plate part (4011) far from crossbeam (401) is so that the cross section structure after the first reinforcing member (7) and crossbeam (401) assembling is in The degree of lip-rounding.

4. the chassis of a kind of new energy logistic car according to claim 3, it is characterized in that: two of the crossbeam (401) The lateral wall that the inner sidewall of first flat part (4010) and two first of the first reinforcing member (7) reinforce flat part (70) passes through recessed Convex fit structure realization slides laterally longitudinal spacing；Two the first flat parts (4010) up and down of the crossbeam (401) protrude above It is formed with the first retention bead (4013) deviate from out of crossbeam (401) groove for limiting the first reinforcing member (7).

5. the chassis of a kind of new energy logistic car according to claim 2, it is characterized in that: the stringer (400) is provided with Second reinforcing member (9), the second reinforcing member (9) are made of the C-shaped profile of aluminum, and the cross section structure of the profile includes the second reinforcing Two second the reinforcings flat parts (90) that vertical plate part (91) and setting reinforce vertical plate part (91) two sides up and down second, second adds Firmware (9) is embedded in the groove of the stringer (400)；When crossbeam (401) is fixedly connected with stringer (400), crossbeam (401) bottom First flat part (4010) in portion and the second reinforcing flat part (90) at the top of the second reinforcing member (9) are located at stringer (400) The two sides up and down of second flat part (4000) at top, the second flat part (4000), crossbeam (401) bottom at the top of stringer (400) First flat part (4010) in portion and the second reinforcing flat part (90) at the top of the second reinforcing member (9) pass through the fixed company of fastener It connects；When right angle reinforcing member (8) is fixedly connected with stringer (400), the second reinforcing of right angle reinforcing member (8) and the second reinforcing member (9) Vertical plate part (91) is located inside and outside the second vertical plate part (4001) of stringer (400), right angle reinforcing member (8), stringer (400) the second vertical plate part (4001) is reinforced vertical plate part (91) with the second of the second reinforcing member (9) and is fixedly connected by fastener.

6. the chassis of a kind of new energy logistic car according to claim 5, it is characterized in that: the second of the second reinforcing member (9) Vertical plate part (91) are reinforced close to the second vertical plate part (4001) of stringer (400) to which the second reinforcing member (9) and stringer (400) assemble Cross section structure afterwards is C-shaped, alternatively, the second reinforcing vertical plate part (91) second far from stringer (400) of the second reinforcing member (9) is vertical Plate portion (4001) is in the degree of lip-rounding to the cross section structure behind the second reinforcing member (9) and stringer (400) assembling.

7. the chassis of a kind of new energy logistic car according to claim 6, it is characterized in that: the second plate of stringer (400) The lateral wall that the inner sidewall in portion (4000) and the second of the second reinforcing member (9) reinforce flat part (90) passes through concave-convex fit structure reality Existing longitudinal sliding motion cross spacing；Two the second flat parts (4000) up and down of the stringer (400), which protrude above, to be formed with for limiting Make the second retention bead (4003) that the second reinforcing member (9) is deviate from out of stringer (400) groove.

8. the chassis of a kind of new energy logistic car according to claim 2, it is characterized in that: the more crossbeams (401) It is fixed on chassis panel (41).

9. a kind of compartment of new energy logistic car, including carriage assembly (2), skirt assembly (5) and back door assembly (3), feature It is: further includes such as a kind of chassis of new energy logistic car described in any item of the claim 1 to 8.

10. a kind of new energy logistic car, it is characterized in that: including a kind of such as new energy object described in any item of the claim 1 to 8 Flow the chassis of vehicle.