CN108891338A - A kind of dilatation displaying compartment - Google Patents

Abstract

The invention discloses an expansion display carriage, which relates to a special carrying vehicle, which includes a main compartment board and an expansion compartment body, the expansion compartment body and the main compartment board are movably connected and surrounded to form an accommodating space; The compartment panel moves and moves to expand away from the main compartment panel, expand the accommodation space to form an unfolded state, or close to the main compartment panel, fold and shrink the accommodation space to form a folded state; the expansion compartment includes a longitudinal extension compartment and a transverse extension compartment ; A longitudinal drive mechanism is provided between the longitudinal extension box body and the main box panel, and the longitudinal extension box body is arranged on the upper part of the main box panel in a liftable manner through the longitudinal drive mechanism; a horizontal drive mechanism is arranged between the horizontal extension box body and the main box panel Mechanism, the horizontally extending box can move along the vehicle width direction through the horizontal driving mechanism and is arranged on at least one of the two sides of the expansion display car, and the horizontally extending box is respectively connected with the main box board and the longitudinally extending box. It can increase the accommodation space area of the compartment and improve the space utilization rate.

Description

A kind of expansion display car

technical field

The invention relates to a special carrying vehicle, in particular to an expansion display compartment.

Background technique

The product display vehicle, that is, the mobile exhibition hall, is to set up the exhibition hall on a specially designed vehicle, which can reduce the cost input for the fixed exhibition hall. Product display vehicles are more and more widely used today, such as mobile advertising vehicles, product building parade promotion, exhibitions, expositions, exhibitions, etc. Forum lectures: it can be applied to forums, conferences, lectures, etc. Celebration ceremony: it can be applied to real estate opening, ribbon cutting ceremony, award ceremony, etc. Other applications: such as wedding live broadcast, auction, etc.

At present, traditional display vehicles and stage vehicles mostly use multiple panels that can be moved relative to the main compartment of the display vehicle, and are driven by cylinders/oil cylinders. The panels are unfolded to expand the area of the compartment accommodating space and extend out of the compartment to form a display stand. In order to meet the needs of sufficient space for use when the carriages are unfolded, and to meet the requirements of the national standard for the volume of the carriages during storage and travel, the movable carriages generally have more than one cylinder/oil cylinder corresponding to each other to drive the movement of the carriages.

As the patent No. is: CN201210366559.7, the name is: as shown in the patent of double-deck double-variable display car on both sides, it is composed of a main compartment, a lifting compartment and two variable-capacity compartments. The lifting car is composed of the main car roof and the left and right turning flaps, while the variable capacity car is composed of one layer and two layers of variable capacity walls. In addition, in order to achieve a double-layer effect, the patent also has a main compartment roof and a second-layer variable volume floor. In order to meet the requirements of expansion, double-layer, etc., this patent adopts the combination of the above-mentioned multiple components, and all of them are driven and connected by air cylinder/oil cylinder or the lifting drive described in the article to achieve the purpose of expansion/accommodation. In this way, the carriage structure with multiple driving mechanisms not only greatly reduces the utilization rate of the accommodation space after the expansion of the carriage, but also increases the complexity of the internal structure when the carriage is accommodated. In order to accommodate multiple driving mechanisms, it is also necessary to design More costs are spent on the vehicle, and the use of multiple driving mechanisms also increases the damage rate of the drive components of the carriage, wastes the utilization rate of the accommodation space of the carriage, and cannot meet the needs of large-scale activities.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a super-large expansion display car, which can achieve the purpose of compartment expansion and retraction only through the longitudinal drive mechanism and the transverse drive mechanism, greatly improve the utilization rate of the accommodation space, and simplify the compartment The structure reduces the damage rate and meets the needs of large-scale activities.

The purpose of the present invention adopts following technical scheme to realize:

An expansion display carriage, comprising a main compartment board and an expansion compartment body, the expansion compartment body is movably connected with the main compartment board and surrounded to form an accommodating space; the expansion compartment body moves relative to the main compartment board Displacement, so as to expand away from the main compartment plate, expand the accommodation space to form an expanded state, or close to the main compartment plate, fold and shrink the accommodation space to form a folded state; the expansion compartment includes a longitudinal extension A car body and a horizontally extended car body; a longitudinal drive mechanism is arranged between the longitudinally extended car body and the main car board, and the longitudinally extended car body is arranged on the main car board in a liftable manner through the longitudinal drive mechanism The upper part of the upper part of the horizontally extended car body and the main car board is provided with a transverse drive mechanism, and the laterally extended car body can move along the vehicle width direction through the transversely extended car body and is arranged on both sides of the expansion display car On at least one of the sides, the transversely extended box body is respectively movably connected with the main compartment panel and the longitudinally extended box body.

Further, the longitudinally extending car body includes a top panel, an outer top panel and a first side panel; the top panel is liftably arranged on the upper part of the main panel through the longitudinal driving mechanism; The outer top plate is movably connected to the top panel corresponding to the transversely extending box body; one end of the first side plate is connected to the outer layer top plate, and the other end is movably connected to the transversely extending box body.

Further, one end of the outer top plate is movably socketed on the top panel, and the other end is fixedly connected to one end of the first side panel, and the other end of the first side panel faces the top panel. The lifting direction extends and is movably socketed on the horizontally extending box body.

Further, the laterally extended box body includes a bottom box panel and a second side panel; the bottom box panel is drive-connected with the main box panel through the transverse driving mechanism and is sleeved on the main box panel; One end of the second side panel is fixedly connected to the bottom panel, and the other end extends toward the lifting direction of the top panel and is movably socketed with the first side panel; the bottom panel is driven by the transverse drive mechanism And drive the second side panel, the first side panel and the outer top panel to approach or move away from the main compartment panel.

Further, one end of the outer roof panel is hinged to the top panel, the other end is hinged to one end of the first side panel, and the other end of the first side panel is hinged to the transversely extending box body.

Further, the horizontally extending box body includes a bottom panel and a third side panel; the bottom panel is driven and connected to the main compartment panel through the transverse driving mechanism; one end of the third side panel is connected to the bottom panel The car plate is fixedly connected, and the other end extends toward the lifting direction of the top car plate and is hinged with the first side plate; the bottom car plate is driven by the transverse driving mechanism and drives the third side plate, the The first side panel and the outer roof panel are close to or away from the main compartment panel.

Further, the bottom panel includes a first bottom flap and a second bottom flap; one end of the first bottom flap is hinged to the main compartment panel, and the other end is hinged to one end of the second bottom flap, The other end of the second bottom flap is hinged to the third side panel.

Further, when the accommodating space is in the unfolded state, the first side panel and the third side panel are on the same vertical plane and are perpendicular to the bottom compartment panel.

Further, at least one set of intermediate frames is erected between the main compartment panel and the longitudinally extending compartment.

Further, at least one of the two sides of the middle frame along the vehicle width direction is provided with a middle flap; one end of the middle flap is hinged to the middle frame, and a Support components.

Compared with the prior art, the beneficial effects of the present invention are:

1. The longitudinally extended box body is arranged on the upper part of the main box plate in a liftable manner through the longitudinal driving mechanism, forming the upper side space side wall of the accommodation space, and the horizontally extended box body is arranged on the vehicle width direction through the transverse driving mechanism. At least one of the two sides of the display compartment forms the side wall of the lower side space of the accommodation space. According to the structural requirements of the exhibition hall, one side or both sides of the horizontal extension compartment can be set to meet different exhibition hall structures, and the extension of the compartment has a higher degree of freedom. .

2. The horizontal extension box body is respectively connected with the main box panel and the longitudinal extension box body. During the expansion or folding process of the expansion display box, the vertical extension box body is lifted by the longitudinal driving mechanism and drives the horizontal extension box body to form a semi-expanded state. , and then the horizontal driving mechanism drives the horizontal extension box to expand away from the main box panel to form a fully unfolded display box. The compartment body descends and folds into the compartment main body. The flexible connection between the longitudinal extension box body and the horizontal extension box body enables linkage between the two during the unfolding and folding process. The state switching can be completed only through the longitudinal driving mechanism and the horizontal driving mechanism when unfolding and folding. In terms of volume, the carriage of the present invention reduces the number of driving mechanisms compared with the traditional carriage, improves the utilization rate of the accommodation space, reduces the risk of failure, and meets the needs of large-scale event occasions.

Description of drawings

Fig. 1 is a sectional view of a folded state of Embodiment 1 of an expanded display compartment of the present invention;

Fig. 2 is a cross-sectional view of a half-expanded state of Embodiment 1 of an expanded display compartment of the present invention;

Fig. 3 is one of the cross-sectional views of the expanded state of Embodiment 1 of the expanded display compartment of the present invention;

Fig. 4 is the second cross-sectional view of the expanded state of Embodiment 1 of an expanded display compartment of the present invention;

Fig. 5 is a cross-sectional view of a folded state of Embodiment 2 of an expanded display compartment of the present invention;

Fig. 6 is one of the half-expanded cross-sectional views of Embodiment 2 of an expanded display compartment of the present invention;

Fig. 7 is the second half-expanded cross-sectional view of Embodiment 2 of an expanded display compartment of the present invention;

Fig. 8 is one of the expanded state cross-sectional views of Embodiment 2 of an expanded display compartment of the present invention;

Fig. 9 is the second cross-sectional view of the expanded state of Embodiment 2 of an expanded display compartment of the present invention;

Fig. 10 is a top view of an expanded display compartment of the present invention in an unfolded state;

Fig. 11 is an axonometric view of an expanded display compartment of the present invention in an unfolded state.

Among the figure: 10, the main compartment plate; 20, the expansion compartment; 21, the longitudinal extension compartment; 22, the transverse extension compartment; 211, the top panel; 212, the outer roof; 213, the first side panel; 221 222, the second side panel; 223, the third side panel; 2211, the first bottom panel; 2212, the second bottom panel; 30, the accommodation space; 40, the longitudinal driving mechanism; 50, the horizontal Driving mechanism; 60, vehicle width direction; 70, vehicle length direction; 80, middle layer skeleton; 81, middle layer flap; 82, support assembly.

Detailed ways

Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

As shown in Figures 1 to 11, in order to make the display car and the stage car compartment have a larger accommodating space 30, a lower component damage rate, and a simpler structure under the same volume, the present invention provides an expanded display compartment, which expands the display compartment Including the main compartment panel 10 and the expansion compartment 20, the expansion compartment 20 and the main compartment panel 10 are movably connected and surrounded to form an accommodating space 30; the expansion compartment 20 is moved relative to the main compartment panel 10 to expand away from the main compartment The panel 10 expands the accommodating space 30 to form an unfolded state, or closes to the main compartment panel 10, folds and shrinks the accommodating space 30 to form a collapsed state;

Specifically, in order to achieve the above-mentioned purpose, the expansion box body 20 includes a longitudinal extension box body 21 and a transverse extension box body 22; The longitudinal drive mechanism 40 is arranged on the upper part of the main compartment panel 10 in a liftable manner. When the expansion display compartment is switched from the folded state to the unfolded state, the longitudinal drive mechanism 40 drives the longitudinal extension compartment 21 to rise away from the main compartment panel 10, so that the longitudinal extension The accommodating space 30 between the box body 21 and the main compartment panel 10 can expand and extend from the height direction, and form an upper half inner wall of the accommodating space 30 . When the expanded display compartment is switched from the unfolded state to the folded state, the longitudinal drive mechanism 40 drives the longitudinally extended compartment 21 to descend close to the main compartment panel 10, so that the accommodating space 30 between the longitudinally extended compartment body 21 and the main compartment panel 10 is at the width The direction is reduced to form the outer wall of the carriage to meet the carriage size stipulated by the state;

A transverse driving mechanism 50 is arranged between the transversely extending box body 22 and the main compartment plate 10, and the transversely extending box body 22 can move along the vehicle width direction 60 through the transversely extending box body 50 and is arranged on at least one of the two sides of the expanded display compartment. In this example, the laterally extended compartments 22 are arranged on both sides of the main compartment panel 10. Specifically, the laterally extended compartments 22 can be arranged on both sides according to the structural requirements of the exhibition hall, so that both sides of the expansion display compartment can be expanded, or a single-sided compartment can be formed. Extended structure. Further, when the expansion display car only adopts the structure of one-side laterally extended car body 22, the main body of the car body on one side without the laterally extended car body 22 can be provided with an unfolding rotating plate (not shown in the figure) separately, and in the unfolded state, it is expanded to form an open space. style exhibition hall. In order to reduce the number of driving mechanisms, the horizontally extended box body 22 is movably connected with the main box panel 10 and the longitudinally extended box body 21, so that the longitudinally extended box body 21 and the horizontally extended box body 22 form a linkage in the process of switching between the unfolded state and the folded state. Compared with the traditional display vehicle, fewer drive mechanisms are used, thereby reducing the space occupied by the drive mechanism in the accommodation space 30, optimizing the structure, and reducing component failure rates. Wherein the longitudinal driving mechanism 40 and the lateral driving mechanism 50 are preferably oil cylinders.

The longitudinally extending car body 21 includes a top panel 211, an outer roof 212 and a first side panel 213; the top panel 211 is liftably arranged on the upper part of the main panel 10 through a longitudinal drive mechanism 40, and the longitudinal drive mechanism 40 The fixed end is fixed to the main compartment panel 10, and the movable end of the longitudinal drive mechanism 40 is fixed to the top compartment panel 211; the outer roof panel 212 is movably connected to the top panel panel 211 corresponding to the laterally extending compartment body 22, and the outer top panel 212 is arranged on the expansion The display car is provided with one side of the laterally extending car body 22. When the expanded display car is in the unfolded state, the outer roof 212 and the top panel 211 together form the upper side wall of the accommodation space 30. Further, the first side plate One end of 213 is connected to the outer roof 212 , and the other end is movably connected to the laterally extending box body 22 .

Example 1:

As shown in Figures 1 to 4, as one of the preferred embodiments, one end of the outer top plate 212 is movably socketed on the top panel 211, specifically, the telescopic movement direction of the outer top plate 212 is socketed on the top panel 211 and The direction of movement of the laterally extended box body 22 is consistent, the other end of the outer top plate 212 is fixedly connected to one end of the first side plate 213, and the other end of the first side plate 213 extends toward the lifting direction of the top panel 211 and is movably socketed on the The box body 22 is extended laterally. When the expansion display compartment is switched from the folded state to the unfolded state, the longitudinal driving mechanism 40 drives the top panel 211 to lift the height space of the expansion accommodation space 30, and at the same time, the outer top plate 212 and the first side plate 213 are also driven together. It is lifted away from the main compartment panel 10, and then the laterally extending compartment 22 is driven along the vehicle width direction 60 in a direction away from the main compartment panel 10, and drives the first side panel 213 and the outer top panel 212 to move in the same direction, and the outer top panel 212 Then protrude from the top panel 211 to form the upper inner wall of the accommodation space 30 together with the top panel 211 , and the first side panel 213 forms the side wall of the accommodation space 30 .

Further, the laterally extended box body 22 includes a bottom box panel 221 and a second side panel 222; the bottom box panel 221 is drive-connected to the main box panel 10 through a transverse drive mechanism 50 and is socketed on the main box panel 10, and the expanded display compartment is expanded. During the switching process of the folded state and the folded state, the bottom panel 221 can be located in the main compartment panel 10 and move relatively along the vehicle width direction 60; one end of the second side panel 222 is fixedly connected to the bottom panel 221, and the other end faces the top panel 211 extends in the lifting direction and is movably socketed with the first side panel 213; the bottom compartment panel 221 is driven by the transverse drive mechanism 50 and drives the second side panel 222, the first side panel 213 and the outer top panel 212 to approach or move away from the main compartment panel 10 , in the process of switching to the unfolded state, the longitudinal drive mechanism 40 drives the top panel 211 to lift, the first side panel 213 moves with the top panel 211 to extend and lift relative to the second side panel 222, and then the transverse drive mechanism 50 Drive the bottom compartment plate 221 to extend away from the main compartment plate 10, the bottom compartment plate 221 drives the second side plate 222, the second side plate 222 drives the first side plate 213, and the first side plate 213 finally drives the outer layer top plate 212 away from Stretch out the top panel 211, finally the first side panel 213 and the second side panel 222 form the side walls of the accommodation space 30, the main compartment panel 10 and the bottom panel 221 form the floor of the accommodation space 30, and the top panel 211 and the outer top plate 212 form the top wall of the accommodating space 30 , switching to the folded state in the unfolded state is performed in the reverse order of the above process, which will not be repeated here.

The entire process only needs to use two sets of driving mechanisms to complete the state switching of the expansion display compartment, which reduces the waste of space caused by the large number of driving mechanisms, thereby reducing the damage rate of components, and finally improving the space utilization rate.

Example 2:

As shown in Figures 5 to 9, as a more optimal alternative, one end of the outer roof panel 212 is hinged to the top panel 211, the other end is hinged to one end of the first side panel 213, and the other end of the first side panel 213 is connected to the transverse direction. The extended box body 22 is hinged. When the expansion display compartment is in the folded state, the first side panel 213 and the outer roof panel 212 are parallel to each other and are perpendicular to the main compartment panel 10 in the folded state. When the expansion display compartment is unfolded, the longitudinal drive mechanism 40 drives the top panel. 211 lifting, at the same time, because one end of the first side plate 213 and the transverse extension box body 22 are hinged relative to the main box panel 10, the other end is driven away from the main box panel 10, and because the outer roof panel 212 is hinged to the top panel box One end of the panel 211 is in a static state relative to the top panel 211, so the hinged end of the first side panel 213 and the outer roof panel 212 will be expanded and arched toward the side away from the main compartment panel 10 to form a half-expanded Then, the laterally extending box body 22 is expanded along the vehicle width direction 60 to drive the first side plate 213 and its hinged end to move outward, so that the expansion display compartment can form an unfolded state, and at the same time, the capacity can be realized without using too many driving mechanisms. The expansion of setting space 30.

Further, the laterally extended box body 22 includes a bottom box panel 221 and a third side panel 223; the bottom box panel 221 is driven and connected to the main box panel 10 through a transverse driving mechanism 50, here, the socket structure of the above-mentioned scheme can also be used, The bottom panel 221 can be extended or contracted relative to the main panel 10; one end of the third side panel 223 is fixedly connected to the bottom panel 221, and the other end extends toward the lifting direction of the top panel 211 and is hinged to the first side panel 213; The bottom compartment panel 221 is driven by the transverse driving mechanism 50 and drives the third side panel 223 , the first side panel 213 and the outer top panel 212 to approach or move away from the main compartment panel 10 . When the longitudinal driving mechanism 40 drives the top panel 211 to lift, and the outer top panel 212 and the first side panel 213 are in a semi-expanded and arched state, the transverse driving mechanism 50 drives the bottom panel 221 to move away from the main panel 10, Simultaneously, the hinge point of the third side plate 223 and the first side plate 213 will gradually approach the hinge point of the first side plate 213 and the top panel box plate 211, and the first side plate 213 will also be lifted up due to being infinitely close to upright. Finally, the two hinge points of the top panel 212 are in the same vertical plane to form an unfolded state, and the first side panel 213 and the third side panel 223 are in the same vertical plane and perpendicular to the bottom compartment panel 221 . And when the expansion display compartment is switched to the retracted state, the lateral drive mechanism 50 drives the bottom compartment panel 221 close to the main compartment panel 10, makes the third side panel 223 close to the main compartment panel 10 and drives the first side panel 213 to close to the hinged end of the first side panel 213. At this time, the first side plate 213 is in a tilted state. Under the condition that the height of the hinge point between the first side plate 213 and the third side plate 223 remains unchanged, the outer layer top plate 212 also descends accordingly, forming a half-way with the outer layer top plate 212. In the unfolded state, the longitudinal driving mechanism 40 then drives the top panel 211 down to approach the main compartment panel 10, the first side panel 213 and the outer roof panel 212 are also folded close to the main compartment panel 10, and in the retracted state, the first side panel The hinge points among the board 213 , the third side board 223 and the outer top board 212 are staggered from each other.

In order to make the expansion and display car structure simpler, the bottom panel 221 includes a first bottom flap 2211 and a second bottom flap 2212; one end of the first bottom flap 2211 is hinged to the main compartment panel 10, and the other end is connected to the second bottom flap One end of the flap 2212 is hinged, and the other end of the second bottom flap 2212 is hinged to the third side panel 223 . When the laterally extending box body 22 is in the retracted state, the first bottom flap 2211 and the second bottom flap 2212 are in the folded state, arched toward the top panel 211 and accommodated in the accommodation space 30, when the bottom flap When the panel 221 moves away from the main compartment panel 10, the angle between the first bottom flap 2211 and the second bottom flap 2212 gradually increases, and finally the two are parallel to each other to form the floor of the accommodation space 30, enabling the expansion and display The connection structure between the compartment parts is more compact and reasonable.

In order to achieve the effect of a multi-layer display stand, at least one set of middle frame 80 is erected between the main compartment panel 10 and the longitudinally extending body 21 , and the extension direction of the middle frame 80 is parallel to the vehicle length direction 70 .

In order to increase the area of the multi-layer platform in the unfolded state while complying with the national regulations on the volume of the compartment, at least one of the two sides of the middle frame 80 along the vehicle width direction 60 is provided with a middle flap 81, and the middle flap 81 can be arranged according to the structure of the exhibition hall. It is required to set up one side or two sides and different size areas can be customized; one end of the middle flap 81 is hinged to the middle frame 80, and a support assembly 82 is provided between the other end and the transverse drive mechanism 50. Specifically, the support assembly 82 is arranged on On the second side panel 222 or the third side panel 223, when the expanded display compartment is in the folded state, the middle flap 81 is placed facing and perpendicular to the main compartment panel 10, and when the expanded display compartment is in the unfolded state, the middle flap The panel 81 can be expanded by an air cylinder or an oil cylinder to form a state parallel to the main compartment panel 10, and is erected on the second side panel 222 or the third side panel 223 by the support assembly 82 to reduce the supporting pressure of the oil cylinder or the cylinder.

To sum up, through the above technical solution, the expansion display car of the present invention not only has flexible structure selection, but also has a larger accommodating space 30 and a simpler structure than traditional display cars and stage cars with the same car volume, and is suitable for large-scale events.

The above-mentioned embodiment is only a preferred embodiment of the present invention, and cannot be used to limit the protection scope of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (10)

1. An expansion display compartment, comprising a main compartment panel and an expansion compartment, the expansion compartment is movably connected with the main compartment panel and surrounded to form an accommodating space; through the expansion compartment relative to the main compartment The panel is movable and displaced to expand away from the main compartment panel, expand the accommodating space to form an unfolded state, or approach the main compartment panel, fold and shrink the accommodating space to form a collapsed state; it is characterized in that: The expansion compartment includes a longitudinally extending compartment and a transversely extending compartment; a longitudinal drive mechanism is arranged between the longitudinally extending compartment and the main compartment plate, and the longitudinally extending compartment can be raised and lowered by the longitudinal drive mechanism is arranged on the upper part of the main compartment plate; a transverse drive mechanism is arranged between the transverse extension compartment and the main compartment plate, and the transverse extension compartment can move along the vehicle width direction through the transverse drive mechanism and It is arranged on at least one of the two sides of the expansion display car, and the laterally extended car body is respectively movably connected with the main car board and the longitudinally extended car body. 2. The expansion display car according to claim 1, characterized in that: the longitudinally extending car body comprises a top panel, an outer top panel and a first side panel; The top panel is liftably arranged on the upper part of the main panel through the longitudinal drive mechanism; the outer top panel is movably connected to the top panel corresponding to the transverse extension box; the second One end of the side plate is connected to the outer top plate, and the other end is movably connected to the laterally extending box body. 3. The expansion display compartment according to claim 2, wherein one end of the outer roof plate is movably socketed on the top panel, and the other end is fixedly connected to one end of the first side plate. The other end of the first side plate extends toward the lifting direction of the top panel and is movably socketed on the transversely extending box. 4. The expansion display car according to claim 3, characterized in that: the laterally extended car body comprises a bottom car plate and a second side plate; The bottom compartment plate is driven and connected to the main compartment plate through the transverse drive mechanism and is sleeved on the main compartment plate; one end of the second side plate is fixedly connected to the bottom compartment plate, and the other end faces the The top panel extends in the lifting direction and is movably socketed with the first side panel; The bottom compartment plate is driven by the transverse driving mechanism and drives the second side plate, the first side plate and the outer top plate to approach or move away from the main compartment plate. 5. The expansion display compartment according to claim 2, wherein one end of the outer roof panel is hinged to the top panel, the other end is hinged to one end of the first side panel, and the first side panel The other end of the plate is hinged to the transversely extending box body. 6. The expanded display car according to claim 5, wherein the laterally extended car body includes a bottom floor and a third side plate; The bottom panel is driven and connected to the main panel through the transverse drive mechanism; one end of the third side panel is fixedly connected to the bottom panel, and the other end extends toward the lifting direction of the top panel and is connected with The first side panel is hinged; The bottom compartment plate is driven by the transverse driving mechanism and drives the third side plate, the first side plate and the outer top plate to approach or move away from the main compartment plate. 7. The expanded display compartment according to claim 6, wherein the bottom deck includes a first bottom deck and a second bottom deck; one end of the first bottom deck is hinged to the main deck , the other end is hinged to one end of the second bottom flap, and the other end of the second bottom flap is hinged to the third side panel. 8. The expansion display car according to claim 6 or 7, characterized in that: when the accommodating space is in the unfolded state, the first side panel and the third side panel are on the same vertical plane and perpendicular to The bottom deck. 9. The expansion display car according to any one of claims 1-7, characterized in that: at least one set of intermediate frames is erected between the main car board and the longitudinally extending car body. 10. The expansion display compartment according to claim 9, characterized in that: at least one of the two sides of the middle layer frame along the vehicle width direction is provided with a middle layer flap; one end of the middle layer flap is hinged to the middle layer A support assembly is arranged between the other end of the frame and the transverse driving mechanism.