CN214028368U - Support device and dump truck hopper - Google Patents

Abstract

The utility model provides a strutting arrangement and self-discharging car hopper relates to engineering dump truck technical field. The supporting device comprises a supporting cylinder and a supporting assembly, wherein a top plate is plugged at the top end of the supporting cylinder, a bottom plate is plugged at the bottom end of the supporting cylinder, and an opening is formed in one side of the supporting cylinder; the supporting component is accommodated in the supporting cylinder, the bottom end of the supporting component is hinged to the bottom plate, a driving piece is installed on the side wall, opposite to the opening, of the supporting cylinder, and the driving end of the driving piece is connected with the supporting component. The dump truck hopper comprises a support plate, a rear plate body and the support devices, wherein the number of the support devices is two, the two support devices are fixedly arranged at two corners of the tail end of the support plate respectively, and the openings of the support devices face backwards; the back plate body is hinged between the two supporting devices. The supporting device can increase the rotation angle of the rear plate body, so that the blockage of the rear plate body to materials is reduced, and the unloading efficiency of the dump truck hopper is improved; and the rear plate body can be stably restored, so that the collision and damage of the rear plate body are reduced, and the normal use of the rear plate body is ensured.

Description

Support device and dump truck hopper

Technical Field

The utility model relates to an engineering tipper technical field particularly, relates to a strutting arrangement and tipper hopper.

Background

The dumper is a material conveying vehicle with a tiltable car hopper, and is suitable for transporting various bulk materials such as sand stones, earthwork and the like. The car hopper of current tipper generally includes the bottom plate, preceding plate body, curb plate body and back plate body, the railway carriage or compartment body is enclosed into jointly to above-mentioned plate body, wherein, the top and the curb plate body of back plate body are articulated, when the tipper emptys the material, its car hopper front end upwards rotates, back plate body rotates and opens, the material in the car hopper is poured through back plate body opening part, however, the back plate body is flagging state under self action of gravity, the back plate body can hinder pouring of material, thereby influence the efficiency of unloading of tipper, and unload after accomplishing, the car hopper restores the normal position, the back plate body can take place violent collision with curb plate body or bottom plate, cause the damage to the back plate body, influence its use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a strutting arrangement and tipper fill to solve current back plate body and can hinder pouring of material when unloading, influence the efficiency of unloading of tipper, and unload and accomplish the back, the back plate body can take place violent collision with curb plate body or bottom plate, leads to the fact the technical problem of damage to it.

In order to solve the problems, the utility model provides a supporting device, which comprises a supporting cylinder and a supporting component, wherein the top end of the supporting cylinder is plugged with a top plate, the bottom end of the supporting cylinder is plugged with a bottom plate, and one side of the supporting cylinder is provided with an opening; the supporting assembly is accommodated in the supporting cylinder, the bottom end of the supporting assembly is hinged to the bottom plate, a driving piece is installed on the cylinder side wall, opposite to the opening, in the supporting cylinder, the driving end of the driving piece is connected with the supporting assembly, and the driving piece is used for driving the supporting assembly to rotate outwards around the hinged position through the opening or rotate inwards through the opening.

Optionally, the housing of the driving element is fixedly connected to the cylinder side wall of the support cylinder, the driving end of the driving element is a telescopic end, the telescopic end is fixedly connected with a sliding seat, the sliding seat is provided with a sliding groove extending in the up-down direction, and a first sliding block is slidably connected in the sliding groove; the supporting assembly comprises a lower supporting component and an upper supporting component, the bottom end of the lower supporting component is hinged to the bottom plate, the top end of the upper supporting component is fixedly connected to the first sliding block, and the bottom end of the upper supporting component is hinged to the top end of the lower supporting component.

Optionally, an inclined block is fixedly connected to a cylinder side wall of the support cylinder, an inclined plane of the inclined block faces the opening, and the inclined plane inclines from top to bottom towards the opening; the shell of the driving piece is fixedly connected to the inclined plane, and the driving end of the driving piece inclines upwards along the direction towards the opening.

Optionally, a first spring is arranged in the sliding groove, the bottom end of the first spring is fixedly connected with the bottom end of the sliding groove, and the top end of the first spring is fixedly connected with the first sliding block.

Optionally, go up supporting part including connecting block and "L" template, the connecting block rigid coupling in first slider, the top rigid coupling of the vertical plate body of "L" template in the connecting block, the bottom rigid coupling of the horizontal plate body of "L" template has articulated ear, the top of lower supporting part with articulated ear is articulated.

Optionally, a ball is connected to the upper supporting member in a rolling manner toward the top corner of the opening.

Optionally, the support device further includes a locking bolt, the top plate is provided with a through hole, a threaded hole is formed in a position, corresponding to the through hole, of the top of the upper support member, and a screw of the locking bolt penetrates through the through hole and is screwed with the threaded hole.

Optionally, the lower supporting part comprises an insertion tube, a supporting rod and a second slider, the bottom end of the supporting rod is inserted into the insertion tube, the second slider is slidably clamped in the insertion tube, and the second slider is fixedly connected to the bottom end of the supporting rod; the plug cylinder is internally provided with a second spring, the bottom end of the second spring is fixedly connected with the bottom of the plug cylinder, and the top end of the second spring is fixedly connected with the second sliding block.

The utility model also provides a self-discharging car hopper, which comprises a support plate, a rear plate body and the support devices, wherein two support devices are arranged, the two support devices are respectively and fixedly arranged at two corners of the tail end of the support plate, and the openings of the support devices face backwards;

the top of the left side of the rear plate body is hinged to a supporting cylinder of the supporting device positioned on the left side, a left abutting plate is fixedly connected to the left side of the rear plate body, and the left abutting plate corresponds to an opening of the corresponding supporting cylinder; the top of the right side of the rear plate body is hinged to the supporting cylinder of the supporting device on the right side, a right abutting plate is fixedly connected to the right side of the rear plate body, and the right abutting plate corresponds to the opening of the corresponding supporting cylinder.

Optionally, the bottom of the rear plate body is provided with a plug connector, the supporting plate is fixedly connected with a connecting lug, the connecting lug is provided with an inserting hole, and the plug connector is matched with the inserting hole.

The utility model provides a supporting device and self-discharging car hopper, when needing to transport the material, the driving piece drives the supporting component to rotate to the supporting cylinder, the back plate body is in the sag state under the action of self gravity, the material is loaded into the car hopper to be transported, when the material is transported to the assigned position to be unloaded, the front end of the carriage upwards rotates, the back plate body is in the sag state under the action of self gravity, a discharge opening is formed between the back plate body and the port at the back end of the car hopper, then two driving pieces are started to drive the corresponding supporting component to outwards rotate until the top end of the left supporting component is abutted against the left top supporting plate, the top end of the right supporting component is abutted against the right top supporting plate, and the two supporting components can support the back plate body to rotate backwards deviating from the supporting plate to increase the back end port, thereby reducing the blocking of the back plate body to the material pouring out, correspondingly ensuring that the material can be poured out smoothly through the port when unloading, the unloading efficiency of the dump truck hopper is improved. Unloading and accomplishing the back, the car hopper rotates the answer normal position downwards, starts the drive assembly drive supporting component and inwards rotates, and the back plate body rotates towards the backup pad thereupon, rotates no longer to support the back plate body in the support section of thick bamboo until supporting component, and the back plate body is corresponding to reply to initial flagging state to make the back plate body can reply to initial position steadily, reduce the back plate body and take place violent collision with curb plate body and backup pad and cause the damage to the back plate body, the corresponding normal use who ensures the back plate body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a first cross-sectional view of a support device provided by the present invention, wherein a locking screw locks an upper support member;

fig. 2 is a second cross-sectional view of the support device provided by the present invention, wherein the support assembly is rotated to the outside of the support cylinder;

fig. 3 is a schematic front view of the dump truck hopper provided by the present invention, wherein the supporting device supports the rear plate in an open state;

fig. 4 is a rear view schematic diagram of the dump truck bucket provided by the present invention.

Description of reference numerals:

100-a support cylinder; 110-a top plate; 120-a backplane; 121-a limiting column; 130-an opening; 210-a driver; 220-a slide base; 230-a chute; 240-a first slider; 250-a first spring; 260-oblique blocks; 300-an upper support member; 310-connecting block; 320- "L" shaped board; 330-hinge ear; 340-a ball bearing; 400-a lower support member; 410-a plug-in cartridge; 420-a support bar; 430-a second slider; 440-a second spring; 500-locking the bolt; 610-a support plate; 611-connecting lugs; 620-rear plate body; 621-left abutting plate; 622-right abutting plate; 630-a front panel body; 640-side plate body.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present embodiment provides a supporting device, as shown in fig. 1 and fig. 2, including a supporting cylinder 100 and a supporting assembly, wherein a top plate 110 is sealed at a top end of the supporting cylinder 100, a bottom plate 120 is sealed at a bottom end of the supporting cylinder 100, and an opening 130 is formed at one side of the supporting cylinder 100; the supporting component is accommodated in the supporting cylinder 100, the bottom end of the supporting component is hinged to the bottom plate 120, a driving part 210 is installed on the cylinder side wall opposite to the opening 130 in the supporting cylinder 100, the driving end of the driving part 210 is connected with the supporting component, and the driving part 210 is used for driving the supporting component to rotate outwards through the opening 130 around the hinged position or rotate inwards through the opening 130.

The present embodiment further provides a dump truck hopper, as shown in fig. 3 and 4, including a supporting plate 610, a rear plate 620 and the two supporting devices, where the two supporting devices are respectively fixed at two corners of the tail end of the supporting plate 610, and the opening 130 of the supporting device faces backwards; the top of the left side of the rear plate body 620 is hinged to the support cylinder 100 of the support device on the left side, and the left side of the rear plate body 620 is fixedly connected with a left abutting plate 621, and the left abutting plate 621 corresponds to the opening 130 of the corresponding support cylinder 100; the top of the right side of the rear plate 620 is hinged to the supporting cylinder 100 of the supporting device on the right side, and the right side of the rear plate 620 is fixedly connected with a right abutting plate 622, and the right abutting plate 622 corresponds to the opening 130 of the corresponding supporting cylinder 100.

The supporting device and the dump truck bucket provided by the embodiment, wherein the supporting device includes a supporting cylinder 100 as a mounting base, a supporting component for rotating outwards to support the rear plate 620, and a driving component 210 for driving the supporting component to rotate; the dump truck includes a support plate 610 serving as a bearing substrate, a rear plate 620 for limiting the material on the support plate 610, and the support device capable of supporting the rear plate 620.

Specifically, the dump truck includes a support plate 610, a front plate 630, two side plates 640 and a rear plate 620, each of which together forms a truck hopper, when materials need to be transported, as shown in fig. 1, the driving member 210 drives the support assembly to rotate into the support barrel 100, as shown in fig. 4, the rear plate 620 is in a drooping state under the action of its own gravity, the materials are loaded into the truck hopper for transportation, when the materials are transported to a specific position for unloading, the front end of the carriage rotates upward, the rear plate 620 is in a drooping state under the action of its own gravity, a discharge opening is formed between the rear plate 620 and a port at the rear end of the truck hopper, then the two driving members 210 are started to drive the corresponding support assemblies to rotate outward, as shown in fig. 3, until the top end of the left support assembly abuts against a left top support plate 621, the top end of the right support assembly abuts against a right top support plate 622, and the two support assemblies can support the rear plate 620 to rotate backward away from the support plate 610, with increase rear end port to reduce the blockking that plate body 620 poured the material and cause, the material can smoothly pour through the port when correspondingly guaranteeing to unload, improves the efficiency of unloading of dump truck fill. Unloading the completion after, the car hopper rotates the answer normal position downwards, start the drive assembly drive supporting component and inwards rotate, back plate body 620 rotates towards backup pad 610 thereupon, until supporting component rotate to support a section of thick bamboo 100 in no longer supporting back plate body 620, back plate body 620 is corresponding to reply to initial flagging state, thereby make back plate body 620 can reply to initial position steadily, reduce back plate body 620 and curb plate body 640 and backup pad 610 and take place violent collision and cause the damage to back plate body 620, the normal use of back plate body 620 is correspondingly guaranteed.

Specifically, as shown in fig. 1 and 2, a limiting column 121 may be fixedly connected to the bottom of the bottom plate 120 of the supporting cylinder 100, a limiting groove may be formed in the supporting plate 610, and during installation, the limiting column 121 is inserted into the limiting groove to realize the preliminary positioning of the supporting device and the supporting plate 610, and then the supporting device is further fixedly connected, so as to improve the position accuracy and convenience of the supporting device connected to the supporting plate 610.

Optionally, in this embodiment, a plug connector may be installed at the bottom of the rear board body 620, the supporting board 610 is fixedly connected with a connecting lug 611, the connecting lug 611 is provided with a plugging hole, and the plug connector is matched with the plugging hole. When unloading is not needed, the plug connector can be inserted into the plug hole to lock the rear plate body 620, so that the material separation of the rear plate body 620 at the rear end of the hopper is improved, and the damage to the rear plate body 620, the supporting plate 610 and the like caused by bumping, shaking and impacting of the rear plate body 620 in the running process of the vehicle can be reduced; when the material is required to be unloaded, the plug holes are found out of the plug connectors, and the rear plate body 620 can rotate relative to the supporting plate 610 to pour out the material.

The directions "top", "bottom", "upper" and "lower" referred to herein are based on the perspective of fig. 1, and the directions "left" and "right" are based on the perspective of fig. 4, and are not limited thereto.

In this embodiment, the housing of the driving element 210 may be fixedly connected to the cylinder side wall of the supporting cylinder 100, the driving end of the driving element 210 is a telescopic end, the telescopic end is fixedly connected with a sliding seat 220, the sliding seat 220 is provided with a sliding groove 230 extending along the up-down direction, and a first sliding block 240 is slidably connected in the sliding groove 230; the support assembly comprises a lower support part 400 and an upper support part 300, wherein the bottom end of the lower support part 400 is hinged to the bottom plate 120, the top end of the upper support part 300 is fixedly connected to the first sliding block 240, and the bottom end of the upper support part 300 is hinged to the top end of the lower support part 400. Here, in a specific form in which the support assembly is connected to the driving member 210, the upper support member 300 and the lower support member 400 form a lever structure, and when unloading is not required, as shown in fig. 1, the driving end of the driving member 210 is in a retracted state, the first slider 240 is located in the support cylinder 100 under the limiting action of the sliding groove 230, the upper support member 300 is located in the support cylinder 100 along with the first slider 240, the lower support member 400 is correspondingly located in the support cylinder 100, the support assembly does not interfere with the rear plate body 620, and the rear plate body 620 can be in a naturally drooping state; when unloading is required, as shown in fig. 2, the driving end of the driving element 210 extends out towards the opening 130, so as to drive the sliding seat 220 to move outwards, the first slider 240 and the upper supporting member 300 extend out from the opening 130 along with the sliding seat 220, the top end of the lower supporting member 400 rotates outwards along with the upper supporting member 300 to support, and in the moving process, the first slider 240 can be adjusted up and down along the sliding groove 230, so as to achieve the smooth movement of the supporting member; the top of the upper supporting part 300 is abutted against the rear plate body 620 to support the same, and along with the continuation of the driving end of the driving part 210, the upper supporting part 300 and the lower supporting part 400 continue to move outwards, and the corresponding supporting rear plate body 620 deviates from the supporting plate 610 to rotate, so that the port is increased, and the smoothness of material unloading is improved. After the discharging is completed, the driving end of the driving member 210 is retracted inward, the upper support member 300 moves inward accordingly, the lower support member 400 rotates inward to return to the original position, and the rear plate 620 rotates to the initial position along with the upper support member 300.

In this embodiment, as shown in fig. 1 and fig. 2, an inclined block 260 may be fixedly connected to a cylinder sidewall of the support cylinder 100, an inclined surface of the inclined block 260 faces the opening 130, and the inclined surface inclines from top to bottom towards the opening 130; the housing of the driving member 210 is fixed to the inclined surface, and the driving end of the driving member 210 is inclined upward in a direction toward the opening 130. Here, a specific installation form of the driving member 210 is provided, wherein the inclined block 260 supports the driving member 210 as an installation seat of the driving member 210, the top of the rear plate body 620 is hinged to the supporting cylinder 100, the driving end of the driving member 210 inclines backwards and upwards, and the driving end of the driving member 210 moves upwards simultaneously in the outward extending process, the upper supporting member 300 moves outwards and upwards correspondingly, the top of the upper supporting member 300 can support the rear plate body 620 close to the hinged position, and when the upper supporting member 300 moves horizontally backwards for the same distance, the arrangement can enable the upper supporting member 300 to support the rear plate body 620 to rotate for a larger angle, accordingly, the rear end port of the car hopper is larger, and materials can be discharged more smoothly, so as to improve the driving efficiency of the driving member 210.

In this embodiment, as shown in fig. 1 and fig. 2, a first spring 250 may be disposed in the sliding slot 230, a bottom end of the first spring 250 is fixedly connected to a bottom end of the sliding slot 230, and a top end of the first spring 250 is fixedly connected to the first sliding block 240. In the process that the driving part 210 drives the upper supporting part 300 to move through the sliding base 220, the first sliding block 240 and the sliding groove 230 slide relatively, the first spring 250 can buffer the sliding of the first sliding block 240, and correspondingly buffer the vibration of the rear plate body 620 transmitted to the sliding base 220 and the driving part 210 through the upper supporting part 300, so that the rotating stability of the rear plate body 620 is further improved, and the collision damage caused by severe rotation of the rear plate body 620 is reduced; in addition, damage to the driving member 210 caused by the vibration force can be reduced to ensure normal use of the driving member 210.

Specifically, in this embodiment, as shown in fig. 1 and 2, the upper supporting member 300 may include a connecting block 310 and an "L" -shaped plate 320, the connecting block 310 is fixedly connected to the first sliding block 240, a top end of a vertical plate of the "L" -shaped plate 320 is fixedly connected to the connecting block 310, a bottom end of a horizontal plate of the "L" -shaped plate 320 is fixedly connected to a hinge ear 330, and a top end of the lower supporting member 400 is hinged to the hinge ear 330. The supporting device may further include a locking bolt 500, the top plate 110 is provided with a through hole, a threaded hole is formed at a position of the top of the upper supporting member 300 corresponding to the through hole, and a screw of the locking bolt 500 passes through the through hole and is screwed with the threaded hole. Here, in a specific form of the upper support member 300, the connection block 310 and the "L" -shaped plate 320 are connected between the first slider 240 and the lower support member 400, and transmit the supporting force of the lower support member 400 to the rear plate 620. When unloading is not needed, as shown in fig. 1, the driving member 210 drives the upper supporting member 300 to retract into the supporting cylinder 100, the threaded hole at the top of the upper supporting member 300 vertically corresponds to the through hole of the top plate 110 of the supporting cylinder 100, the locking bolt 500 is screwed downwards, and the locking bolt 500 is screwed into the threaded hole, so that the upper supporting member 300 is locked on the top plate 110 of the supporting cylinder 100, the stability of the supporting assembly is improved, and the interference of the offset of the supporting assembly on the rear plate body 620 is reduced. When the material needs to be unloaded, as shown in fig. 2, the locking screw rod is screwed upwards, the locking screw rod is disengaged from the threaded hole, the upper support part 300 is not locked, and the upper support part 300 can move outwards under the driving action of the driving piece 210.

In this embodiment, as shown in fig. 1 to 3, a ball 340 may be rollingly coupled to a top corner of the upper support member 300 facing the opening 130. Go up supporting part 300 and outwards move under the drive of driving piece 210, the ball 340 at the top of going up supporting part 300 pushes up with back plate body 620, and along with the continuation of driving piece 210 drive end stretches out, go up supporting part 300 outwards along with it, ball 340 takes place rolling motion relatively back plate body 620, on the basis of guaranteeing that supporting part 300 pushes up the supporting role to back plate body 620, can effectively reduce both relative motion's resistance, thereby reduce the load that strutting arrangement supported back plate body 620, and improve back plate body 620 pivoted smoothness nature.

In this embodiment, as shown in fig. 1 and 2, the lower supporting member 400 may include an insertion cylinder 410, a supporting rod 420, and a second slider 430, wherein the bottom end of the supporting rod 420 is inserted into the insertion cylinder 410, the second slider 430 is slidably engaged in the insertion cylinder 410, and the second slider 430 is fixedly connected to the bottom end of the supporting rod 420; the insertion cylinder 410 is internally provided with a second spring 440, the bottom end of the second spring 440 is fixedly connected to the bottom of the insertion cylinder 410, and the top end of the second spring 440 is fixedly connected with a second sliding block 430. Here is a concrete form of the lower supporting member 400, wherein, the supporting rod 420 can slide up and down relative to the insertion cylinder 410, and the second spring 440 is compressed between the bottom of the insertion cylinder 410 and the second slider 430, the driving member 210 drives the movement process of the upper supporting member 300, the supporting rod 420 moves and rotates correspondingly along with the upper supporting member 300, the lower end of the supporting rod 420 drives the second slider 430 to slide along the axial direction of the insertion cylinder 410, the second spring 440 can play a role in buffering the movement of the second slider 430, and can play a role in buffering the vibration force transmitted from the rear plate body 620 to the supporting rod 420, thereby further improving the rotating stability of the rear plate body 620, and reducing the collision damage caused by the violent rotation of the rear plate body 620.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The supporting device is characterized by comprising a supporting cylinder (100) and a supporting assembly, wherein a top plate (110) is sealed at the top end of the supporting cylinder (100), a bottom plate (120) is sealed at the bottom end of the supporting cylinder (100), and an opening (130) is formed in one side of the supporting cylinder (100); the supporting assembly is accommodated in the supporting cylinder (100), the bottom end of the supporting assembly is hinged to the bottom plate (120), a driving piece (210) is installed on the cylinder side wall, opposite to the opening (130), in the supporting cylinder (100), the driving end of the driving piece (210) is connected with the supporting assembly, and the driving piece (210) is used for driving the supporting assembly to rotate outwards through the opening (130) around the hinged position or rotate inwards through the opening (130).

2. The supporting device according to claim 1, wherein the housing of the driving member (210) is fixedly connected to the side wall of the supporting cylinder (100), the driving end of the driving member (210) is a telescopic end, the telescopic end is fixedly connected with a sliding base (220), the sliding base (220) is provided with a sliding groove (230) extending along the up-down direction, and a first sliding block (240) is slidably connected in the sliding groove (230); the support assembly comprises an upper support part (300) and a lower support part (400), the bottom end of the lower support part (400) is hinged to the bottom plate (120), the top end of the upper support part (300) is fixedly connected to the first sliding block (240), and the bottom end of the upper support part (300) is hinged to the top end of the lower support part (400).

3. The supporting device according to claim 2, wherein a sloping block (260) is fixed to the side wall of the supporting cylinder (100), the sloping block (260) has a sloping surface facing the opening (130), and the sloping surface slopes from top to bottom towards the opening (130); the shell of the driving piece (210) is fixedly connected to the inclined plane, and the driving end of the driving piece (210) inclines upwards along the direction towards the opening (130).

4. The supporting device according to claim 2, wherein a first spring (250) is disposed in the sliding slot (230), a bottom end of the first spring (250) is fixedly connected to a bottom end of the sliding slot (230), and a top end of the first spring (250) is fixedly connected to the first sliding block (240).

5. The supporting device according to claim 2, wherein the upper supporting member (300) comprises a connecting block (310) and an "L" -shaped plate (320), the connecting block (310) is fixedly connected to the first sliding block (240), the top end of the vertical plate of the "L" -shaped plate (320) is fixedly connected to the connecting block (310), the bottom end of the horizontal plate of the "L" -shaped plate (320) is fixedly connected to a hinge lug (330), and the top end of the lower supporting member (400) is hinged to the hinge lug (330).

6. Support device according to any of claims 2-5, characterized in that a ball (340) is rollingly connected to the upper support member (300) towards the top corner of the opening (130).

7. The supporting device according to any one of claims 2-5, further comprising a locking bolt (500), wherein the top plate (110) is provided with a through hole, a threaded hole is formed at the top of the upper supporting member (300) corresponding to the through hole, and a screw of the locking bolt (500) passes through the through hole and is screwed with the threaded hole.

8. The supporting device as claimed in any one of claims 2 to 5, wherein the lower supporting member (400) comprises an insertion tube (410), a supporting rod (420) and a second sliding block (430), the bottom end of the supporting rod (420) is inserted into the insertion tube (410), the second sliding block (430) is slidably clamped in the insertion tube (410), and the second sliding block (430) is fixedly connected to the bottom end of the supporting rod (420); the plug-in connection device is characterized in that a second spring (440) is arranged in the plug-in connection barrel (410), the bottom end of the second spring (440) is fixedly connected to the bottom of the plug-in connection barrel (410), and the top end of the second spring (440) is fixedly connected with the second sliding block (430).

9. A dump truck hopper, comprising a support plate (610), a rear plate (620) and two support devices according to any one of claims 1 to 8, wherein the two support devices are respectively fixed at two corners of the rear end of the support plate (610), and the opening (130) of the support device faces backwards;

the top of the left side of the rear plate body (620) is hinged to the supporting cylinder (100) of the supporting device positioned on the left side, a left abutting plate (621) is fixedly connected to the left side of the rear plate body (620), and the left abutting plate (621) corresponds to the opening (130) of the corresponding supporting cylinder (100); the top of the right side of the rear plate body (620) is hinged to the supporting cylinder (100) of the supporting device on the right side, a right abutting plate (622) is fixedly connected to the right side of the rear plate body (620), and the right abutting plate (622) corresponds to the opening (130) of the corresponding supporting cylinder (100).

10. The dump truck hopper according to claim 9, wherein a plug connector is mounted at the bottom of the rear plate body (620), the support plate (610) is fixedly connected with a connecting lug (611), the connecting lug (611) is provided with a plug hole, and the plug connector is matched with the plug hole.

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