CN102745118A - Self-loading and unloading carrier vehicle - Google Patents

Abstract

The invention provides a self-loading and unloading carrier vehicle. The self-loading and unloading carrier vehicle comprises a frame, and two suspension frames which are installed on the frame and arranged oppositely, wherein the two suspension frames are matched to lift a container. At least one suspension frame is movable. The movable suspension frame is moveably arranged on the frame so that the distance between the two suspension frames along the length direction of a vehicle body can be adjusted. The self-loading and unloading carrier vehicle provided by the invention is multi-purpose and can be used to lift containers in various specifications.

Description

self-loading truck

technical field

The invention relates to the field of engineering vehicles, more specifically, to a self-loading and unloading transport vehicle.

Background technique

Container transport vehicles generally need to cooperate with special lifting equipment in container terminals, stations, warehouses and other places to complete the normal loading and unloading of container transport vehicles. In places where there is no special lifting equipment, it is difficult to complete the normal loading and unloading of containers. Even if cranes, forklifts and other lifting and transportation tools are equipped, it is difficult to carry out operations in small industrial mines and docks, and the operation efficiency is very low. The road transportation of containers is subject to certain restrictions, and the container self-loading and unloading transport vehicle can make up for this deficiency, and can independently complete the lifting, loading, unloading and transportation operations.

The self-loading and unloading transport vehicle includes a tractor, a frame, two opposite hangers, outriggers, and a twist lock device. The tractor provides the power for the transportation of the whole vehicle and the movement of the hanger. When a self-loading container is required, first park the car parallel to a certain range on the side of the container, lower the outriggers to support it on the ground, and load it with the twistlock or hook on the hanging chain (or cable) installed on the hanger. Then operate the hanger to lift the container, and then control the retraction of the hanger when the lower surface of the container is higher than the vehicle cargo platform, so that the container falls on the vehicle girder, and then operate the twist lock device to lock the container , that is to complete the self-loading operation of the container. On the contrary, its self-unloading operation can be completed.

At present, the hangers of self-loading and unloading vehicles are all fixedly arranged on the frame girder, which cannot realize the hoisting of containers of different specifications, so that the application range of self-loading and unloading vehicles is very limited.

Contents of the invention

The present invention aims to provide a loading and unloading transport vehicle to solve the problem that the self-loading and unloading transport vehicle in the prior art cannot meet the hoisting requirements of containers of different specifications because the hanger is fixedly installed on the frame girder.

The invention provides a self-loading and unloading transport vehicle, comprising: a vehicle frame; two hangers installed on the vehicle frame and arranged oppositely, the two hangers cooperate to lift containers, at least one hanger is a movable hanger, The movable hanger is movably arranged on the vehicle frame, so that the distance between the two hangers along the length direction of the vehicle body can be adjusted.

Further, the vehicle frame includes a girder on which slide rails are installed; the bottom of the movable hanger is provided with a chute matched with the slide rail, and the movement of the movable hanger is driven by the hanger driving mechanism.

Further, the slide rail includes a first slide rail and a second slide rail arranged side by side, and the first slide rail and the second slide rail are both formed by vertically arranged I-beams; the slide groove includes a first slide rail matched with the first slide rail. The chute and the second chute matched with the second slide rail; the first pulley and the second pulley are installed on the movable hanger, and the first pulley is set corresponding to the outside of the first slide rail and rolls with the concave part of the first slide rail , the second pulley is arranged corresponding to the outer side of the second slide rail and is rollingly matched with the concave portion of the second slide rail.

Further, a limit plate and a twist lock device are also arranged on the movable hanger.

Further, the twist lock device includes: a lock case, fixed on the movable hanger, with a circular mounting hole; a lock core, sleeved in the circular mounting hole; a connecting rod, the first end of which is hinged to the lock core; the twist lock The oil cylinder is installed on the movable hanger, and the piston rod of the twist lock oil cylinder is hinged to the second end of the connecting rod.

Further, the hanger driving mechanism is a first hydraulic cylinder; the first end of the first hydraulic cylinder is connected to the vehicle frame, and the second end is connected to the movable hanger.

Further, the hanger driving mechanism includes: a motor installed on the vehicle frame; a sprocket transmission mechanism including: a driving sprocket connected to the motor; a driven sprocket installed on the vehicle frame; a transmission chain wound on On the driving sprocket and the driven sprocket; the push rod is connected with the transmission chain and the movable hanger respectively.

Further, both hangers are movable hangers, one of which is the first movable hanger, and the other hanger is the second movable hanger; the transmission chain includes the first chain segment and the The second chain segment; the push rod includes a first push rod and a second push rod, the first push rod is connected with the first movable hanger and the first chain segment respectively, and the second push rod is respectively connected with the second movable hanger and the second Chain segment connection.

Further, the self-loading and unloading vehicle also includes: a proximity switch and a controller; the proximity switch is installed on the vehicle frame, and is used to send braking information to the controller when the push rod is at a preset distance from the proximity switch, and the controller is used to The motion information controls the motor to stop rotating.

Further, both hangers are movable hangers, and both hangers are folding arm hangers; each folding arm hanger includes: a base installed on the vehicle frame; the first folding arm is connected with the base Articulation; the second folding arm is hinged with the first folding arm, and the second folding arm is equipped with a sling installation mechanism; and a second hydraulic cylinder for driving the movement of the first folding arm, and for driving the second folding arm Movement of the third hydraulic cylinder.

According to the technical solution of the present invention, because at least one of the two hangers used to hoist the container is movably arranged on the vehicle frame, the distance between the two hangers can be adjusted according to the size of the container to be hoisted, To meet the hoisting requirements of empty or full containers such as 20 feet, 40 feet or other specifications, and realize the loading, unloading, stacking and transportation of containers of different specifications. Thereby overcoming the self-loading and unloading vehicle of the prior art, because the hangers are fixedly installed on the vehicle frame girder, the distance between the hangers cannot be adjusted, resulting in the problem that the self-loading and unloading vehicle cannot meet the hoisting requirements of containers of different specifications. By adopting the technical solution of the invention, the operation efficiency of the self-loading and unloading transport vehicle is improved, and the usage of the self-loading and unloading transport vehicle is also expanded.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 schematically shows the front view structure of the preferred embodiment of the self-loading and unloading vehicle of the present invention; wherein, two hangers are separated by a first distance;

Fig. 2 schematically shows the partial top view structure of Fig. 1;

Fig. 3 schematically shows the front view structure of the preferred embodiment of the self-loading and unloading vehicle of the present invention; wherein, the two hangers are separated by a second distance;

Fig. 4 schematically shows the right view structure of the preferred embodiment of the self-loading and unloading transport vehicle of the present invention;

Fig. 5 schematically shows the three-dimensional structure of the movable hanger in the preferred embodiment of the self-loading and unloading vehicle of the present invention;

Fig. 6 schematically shows the structure of the limiting plate and the twist lock device in the preferred embodiment of the self-loading and unloading vehicle of the present invention;

Fig. 7 schematically shows the side view structure of the twistlock device in the preferred embodiment of the self-loading and unloading vehicle of the present invention; and,

Fig. 8 schematically shows the three-dimensional structure of the hanger driving mechanism in the preferred embodiment of the self-loading and unloading vehicle of the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to Fig. 1 to Fig. 8, a preferred embodiment of the self-loading and unloading transport vehicle provided by the present invention is schematically shown. As shown in the figure, the self-loading and unloading vehicle at least includes a vehicle frame 1 and two hangers 2 and 3 installed on the vehicle frame 1 . The vehicle frame 1 is connected with the tractor (not labeled in the figure), and the tractor provides the power for the transportation of the whole vehicle and the movement of the hanger. The hanger 2 is arranged close to the tractor and is usually called a front hanger. The hanger 3 is arranged near the rear of the vehicle, and is usually called a rear hanger. The hanger 2 and the hanger 3 are arranged oppositely, and cooperate to be used for hoisting the container 9 .

In this embodiment, preferably, both the hanger 2 and the hanger 3 are knuckle-arm hangers, the knuckle-arm hanger has a simple structure, can provide a large range of lifting and hoisting, and can realize a row of two-story container loading and unloading , Stacking operations. Referring to Fig. 4 and Fig. 5, the specific structure of the knuckle-shaped hanger is shown. Taking the hanger 3 as an example, the hanger 3 includes: a base 301, a first knuckle 302 and a second knuckle 303, a second hydraulic pressure cylinder (not shown in Figure 5) and a third hydraulic cylinder (not shown in Figure 5). The base 301 is installed on the vehicle frame 1 . The first folding arm 302 is hinged to the base 301 . The second folding arm 303 is hinged with the first folding arm 302, and the second folding arm 303 is equipped with a sling installation mechanism (not labeled in the figure), which is used to connect the hanging chain (or steel cable) of the corner fitting hole of the container with the Sling mounting mechanism connection. The second hydraulic cylinder is used to drive the first folding arm 302 to move. For example, the first end of the second hydraulic cylinder is hinged to the base 301 , and the second end of the second hydraulic cylinder is hinged to the hinge point of the first folding arm 302 and the second folding arm 303 . The third hydraulic cylinder is used to drive the movement of the second folding arm 303 , for example, the first end of the third hydraulic cylinder is hinged with the first folding arm 302 , and the second end of the third hydraulic cylinder is hinged with the second folding arm 303 . The structure of the hanger 2 is substantially the same as that of the hanger 3 .

At least one hanger in the hanger 2 and the hanger 3 is a movable hanger, and the movable hanger is movably arranged on the vehicle frame 1, so that the distance between the hanger 2 and the hanger 3 along the length of the car body (hereinafter The distance between hanger 2 and hanger 3 for short) can be adjusted. It is easy to understand that the length direction of the vehicle body is parallel to the traveling direction when the vehicle body travels along a straight line. Because the distance between the hanger 2 and the hanger 3 determines the size of the container that can be hoisted, the technical scheme of the present invention is adopted to move the position of the movable hanger so that the distance between the two hangers 2 and 3 can be adjusted according to the needs. The size of the hoisted container 9 is adjusted to meet the hoisting requirements of empty or full containers such as 20 feet, 40 feet or other specifications, so as to realize the loading, unloading, stacking and transportation of containers of different specifications, and improve the self-loading and unloading transport vehicle. The operating efficiency is high, and one machine can be used for multiple purposes, which also expands the use of self-loading and unloading transport vehicles.

Preferably, in this embodiment, both the hanger 2 and the hanger 3 are movable hangers that are movably arranged on the vehicle frame 1. For distinction, the hanger 2 can be referred to as the first movable hanger. Frame 3 is called the second movable hanger. In this way, when the small-sized container 9 is hoisted, the hanger 2 and the hanger 3 move toward each other, so that the small-sized container can be generally centered on the vehicle frame 1 (see Fig. 1, the container 9 in Fig. 1 is a 20-foot specification container); when hoisting a large-sized container 9, the hanger 2 and the hanger 3 move in opposite directions, so that the large-sized container can be generally centered on the vehicle frame 1 (see Figure 3, the container 9 in Figure 3 is 40ft container). In this way, the self-loading and unloading transport vehicle can be evenly stressed, and the driving performance of the vehicle can be prevented from being too heavy at the head or tail of the vehicle body.

With reference to Fig. 1, Fig. 4 and Fig. 5, the hanger 3 is taken as an example below to specifically illustrate the connection relationship between the hanger 3 as the second movable hanger and the vehicle frame 1 in this embodiment. It is easy to understand that the hanger 2 can Adopt the same structure as hanger 3 to be connected with vehicle frame 1. Preferably, the vehicle frame 1 includes a girder on which a slide rail 11 is installed, and the bottom of the hanger 3 is provided with a chute 31 matched with the slide rail 11, and the chute 31 is specifically arranged at the bottom of the base 301, so that the hanger 3 Slidingly matched with the slide rail 11 , the movement of the hanger 3 is driven by the hanger driving mechanism 4 . Wherein, the frame girder includes a transverse girder and a longitudinal girder, and the slide rail 11 can be integrated with the longitudinal girder.

Referring specifically to FIG. 4 , preferably, the slide rail 11 includes a first slide rail 111 and a second slide rail 112 arranged side by side, and the first slide rail 111 and the second slide rail 112 may be arranged symmetrically with respect to the center line of the vehicle frame. The cross sections of the first sliding rail 111 and the second sliding rail 112 are I-shaped, and both can be formed by vertically arranged I-shaped steel. It is easy to understand that the I-beam includes two side plates arranged in parallel and an intermediate plate connected between the two side plates, and the vertically-arranged I-beam in this embodiment refers to the case where the intermediate plate is arranged vertically. Referring to FIG. 5 , the slide slot 31 includes a first slide slot 311 matched with the first slide rail 111 and a second slide slot 312 matched with the second slide rail 112 . The cooperating structure of the double slide rails and the double slide grooves can make the movement of the hanger 3 more stable and reliable.

Referring again to FIG. 4 , preferably, a first pulley 51 and a second pulley 52 are installed on the hanger 3 , the first pulley 51 is arranged corresponding to the outside of the first slide rail 111 and is rollingly fitted with the recess of the first slide rail 111 , the second Two pulleys 52 are set corresponding to the outside of the second slide rail 112 and are rollingly fitted with the concave portion of the second slide rail 112. It is easy to understand that the axes of the first pulley 51 and the second pulley 52 are perpendicular to the ground and are in contact with the middle plate of the I-beam. parallel. This is equivalent to that the whole hanger 3 straddles on the slide rail 11, and is stuck on both sides of the slide rail 11 by the pulleys, so that the hanger 3 is reliably connected with the slide rail 11, and each pulley is rollingly matched with the corresponding slide rail, so that Can produce bigger resistance to the operation of hanger 3.

With reference to Fig. 1, Fig. 2 and Fig. 8, a preferred embodiment of the hanger drive mechanism 4 in this embodiment is shown, the hanger drive mechanism 4 includes a motor 41, a sprocket drive mechanism driven by the motor 41 and a push rod 45 .

Specifically, the motor 41 is installed on the vehicle frame 1 . The sprocket transmission mechanism includes a driving sprocket 42 , a driven sprocket 43 and a transmission chain 44 . The driving sprocket 42 is drivingly connected with the motor 41 . The driven sprocket 43 is installed on the vehicle frame 1 . Transmission chain 44 is wound on driving sprocket 42 and driven sprocket 43, and transmission chain 44 can be full chain structure, also can adopt the combined structure of chain and bar, as long as guarantee to be sleeved on driving sprocket 42 and driven sprocket The part on the sprocket wheel 43 can be a chain all the time. The drive chain 44 is divided by a line connecting the centers of the drive sprocket 42 and the driven sprocket 43 , and the drive chain 44 includes a first chain segment 441 and a second chain segment 442 located on both sides of the drive sprocket 42 . Push rod 45 is connected with transmission chain 44 and movable hanger respectively, like this, when needing to move movable hanger, as long as open motor 41, can drive movable hanger to move by chain 44, push rod 45, make hanger 2 and hanger The distance between racks 3 changes. When the distance between the hanger 2 and the hanger 3 meets the requirements for hoisting the container, the brake motor can be used.

It can be known from the above that, in this embodiment, both the hanger 2 and the hanger 3 are movable hangers, wherein the hanger 2 is the first movable hanger, and the hanger 3 is the second movable hanger. In order to make the hanger 2 and the hanger 3 can be driven by the same hanger driving mechanism 4 to move simultaneously, to simplify the operation and improve the adjustment efficiency, preferably, the push rod 45 includes a first push rod 451 and a second push rod 452, the first push rod 451 and the second push rod 452. The push rod 451 is connected with the first movable hanger 2 and the first chain segment 441 respectively, and the second push rod 452 is connected with the second movable hanger 3 and the second chain segment 442 respectively, which can be easily realized in the transmission chain 44. During the transmission process, the hanger 2 and the hanger 3 are controlled to move toward each other or move away from each other synchronously.

Preferably, in order to realize the automatic stop of the hanger 2 and the hanger 3 during the moving process, and the stop position corresponds to the hoisting space of the container to be hoisted, the self-loading transport vehicle also includes a proximity switch (not shown in the figure) and a control device. Wherein the proximity switch is installed on the vehicle frame 1, and is used when the push rod 45 (which can be the first push rod 451 or the second push rod 452) is at a preset distance from the proximity switch (the preset distance is, for example, 0). The braking information is sent to the controller, and the controller is used to control the motor 41 to stop rotating according to the braking information, so that the hanger automatically stops moving and is positioned. It is easy to understand that in order to realize the hoisting of containers of various specifications, there may be multiple proximity switches corresponding to multiple stop positions of the hanger.

In addition, in an unshown embodiment, the hanger driving mechanism 4 can be a first hydraulic cylinder, still taking the hanger 3 as a movable hanger as an example, the first end of the first hydraulic cylinder is connected to the vehicle frame 1 , the second end is connected with the hanger 3, and the movement of the hanger 3 is realized by controlling the expansion and contraction of the piston rod of the first hydraulic cylinder, and the distance between the hanger 2 and the hanger 3 is changed. Of course, when the hanger 2 is also a movable support, the hanger 2 can also be pushed by a hydraulic cylinder.

Referring to Fig. 6 and Fig. 7, preferably, a limit plate 6 and a twist lock device 7 are also provided on the hanger 3, and the limit plate 6 is used to limit the position of the container 9 when the hanger loads the container 9 on the vehicle frame, so that The container 9 was successfully installed in place. The twistlock device 7 is used to cooperate with the corner fitting holes at the bottom of the container 9 two ends to realize the positioning of the container 9. By installing the twistlock device 7 on the movable hanger and moving with the movable hanger, the movable hanger and the twistlock device 7 The relative positional relationship is determined, which reduces the positioning and box alignment time, and can reduce the number of twist locks used for positioning on the vehicle frame 1 when one machine is used for multiple purposes.

Preferably, the twist lock device 7 includes a lock case 71 , a lock cylinder 72 , a connecting rod 73 and a twist lock cylinder 74 . The lock case 71 is fixed on the movable hanger 3 by welding, for example, and has a circular mounting hole. The lock core 72 is sleeved in the circular mounting hole and can rotate around its own axis. A first end of the connecting rod 73 is hinged to the lock cylinder 72 . The rotary lock cylinder 74 is installed on the movable hanger, and the piston rod of the rotary lock cylinder 74 is hinged to the second end of the connecting rod 73 . In this way, controlling the extension and contraction of the piston rod of the twist lock cylinder 74 can push the lock core 72 to rotate through the connecting rod 73, so that the extension or retraction of the lock core 72 of the twist lock device 7 can be realized, and the automatic locking and positioning of the container can be realized.

It should be noted that, in this embodiment, although the hanger 3 is used as an example to describe in detail, it is easy to understand that the structure hanger 2 adopted by the hanger 3 can also be used in the same way, for example, it can also be set on the hanger 2. Limiting plate, twist lock device and other structures.

In summary, the self-loading and unloading transport vehicle provided by the present invention has the following advantages:

1) It integrates the lifting, loading, unloading and transportation of containers, making the self-loading and unloading of containers faster and more convenient;

2) It can not only load, unload and transport 40-foot containers, but also can be used for loading, unloading and transporting 20-foot containers of other specifications, realizing one machine with multiple functions;

3) The twist lock device is set on the movable hanger, and the relative position relationship between the movable hanger and the twist lock device is determined, which reduces the time for positioning and box alignment, and can reduce the number of twist locks used for positioning on the frame when realizing one machine with multiple functions Quantity; automatic twist lock can be realized, making the whole operation process faster and time-saving.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. A self-loading and unloading transport vehicle, comprising: a vehicle frame (1); two hangers installed on the vehicle frame (1) and arranged oppositely, and the two hangers cooperate to hoist the container (9 ), characterized in that at least one of the hangers is a movable hanger, and the movable hanger is movably arranged on the vehicle frame (1), so that the distance between the two hangers along the length of the vehicle body is The distance can be adjusted. 2. The self-loading and unloading vehicle according to claim 1, characterized in that, The vehicle frame (1) includes a girder on which slide rails (11) are installed; The bottom of the movable hanger is provided with a chute (31) matched with the slide rail (11), and the movement of the movable hanger is driven by a hanger driving mechanism (4). 3. The self-loading and unloading vehicle according to claim 2, characterized in that, The slide rail (11) includes a first slide rail (111) and a second slide rail (112) arranged side by side, and the first slide rail (111) and the second slide rail (112) are both arranged longitudinally The chute (31) includes a first chute (311) matched with the first slide rail (111) and a second chute (312) matched with the second slide rail (112) ); A first pulley (51) and a second pulley (52) are installed on the movable hanger, and the first pulley (51) is arranged corresponding to the outer side of the first slide rail (111) and is connected with the first slide rail (111). The concave part of the rail (111) rolls and fits, and the second pulley (52) is arranged corresponding to the outer side of the second slide rail (112) and rolls fits with the concave part of the second slide rail (112). 4. The self-loading and unloading transport vehicle according to claim 2, characterized in that, a limit plate (6) and a twist lock device (7) are also provided on the movable hanger. 5. The self-loading and unloading transport vehicle according to claim 4, characterized in that, the twist lock device (7) comprises: a lock case (71), which is fixed on the movable hanger and has a circular mounting hole; The lock cylinder (72) is sleeved in the circular mounting hole; the connecting rod (73), the first end of which is hinged with the lock cylinder (72); the rotary lock cylinder (74), installed on the movable hanger , and the piston rod of the twist lock cylinder (74) is hinged to the second end of the connecting rod (73). 6. The self-loading and unloading vehicle according to any one of claims 1 to 5, characterized in that, the hanger driving mechanism (4) is a first hydraulic cylinder; the first end of the first hydraulic cylinder is connected to The vehicle frame (1) is connected, and the second end is connected with the movable hanger. 7. The self-loading and unloading vehicle according to any one of claims 1 to 5, characterized in that, the hanger driving mechanism (4) comprises: A motor (41), mounted on the frame (1); The sprocket transmission mechanism includes: a driving sprocket (42), which is drivingly connected with the motor (41); a driven sprocket (43), which is installed on the frame (1); a transmission chain (44), which winds set on the driving sprocket (42) and the driven sprocket (43); Push rods (45) are respectively connected with the transmission chain (44) and the movable hanger. 8. The self-loading and unloading vehicle according to claim 7, characterized in that, The two hangers are movable hangers, one of which is the first movable hanger (2), and the other hanger is the second movable hanger (3); the transmission chain (44) includes The first chain segment (441) and the second chain segment (442) on both sides of the drive sprocket (42); The push rod (45) includes a first push rod (451) and a second push rod (452), and the first push rod (451) is connected to the first movable hanger (2) and the first push rod respectively. The chain segments (441) are connected, and the second push rod (452) is respectively connected with the second movable hanger (3) and the second chain segment (442). 9. The self-loading and unloading transport vehicle according to claim 7, further comprising: a proximity switch and a controller; the proximity switch is installed on the frame (1) and is used for the push rod distance The proximity switch sends braking information to the controller at a preset distance, and the controller is used to control the motor (41) to stop rotating according to the braking information. 10. The self-loading and unloading vehicle according to claim 1, characterized in that, The two hangers are movable hangers, and the two hangers are folding arm hangers; Each folding arm hanger includes: a base installed on the vehicle frame (1); a first folding arm hinged with the base; a second folding arm hinged with the first folding arm; A sling installation mechanism is installed on the two folding arms; and a second hydraulic cylinder for driving the movement of the first folding arm, and a third hydraulic cylinder for driving the movement of the second folding arm.

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