阅读说明：本技术 基于粮食运输的移动式后卸平台 (Movable type rear unloading platform based on grain transportation ) 是由 管文武 宋会会 潘魁伟 段雪峰 曹虎 于 2021-09-15 设计创作，主要内容包括：本发明属于粮食运输设备技术领域,用于解决现有的一些卡车本身不具有自卸能力,需要通过人工的方式将车厢内的粮食卸下,操作复杂,操作效率低,增加了卸车成本的问题,具体是基于粮食运输的移动式后卸平台,包括底架、翻板、第一引桥、第二引桥和过渡平台,第一引桥和第二引桥位于底架的两端,过渡平台连接底架和第二引桥,底架上安装有两组驱动轮组件和两组转向轮组件；本发明能够辅助不具有自卸能力的卡车进行卸料,既提高了操作效率,又降低了卸车成本,且卡车可以通过倒车或正常前进的方式行驶至翻板上,有助于进一步提高卸车效率。(The invention belongs to the technical field of grain transportation equipment, and aims to solve the problems that some existing trucks do not have self-unloading capacity, grain in a carriage needs to be unloaded in a manual mode, the operation is complex, the operation efficiency is low, and the unloading cost is increased; the invention can assist the truck without self-unloading capability to unload, not only improves the operation efficiency, but also reduces the unloading cost, and the truck can drive to the turning plate in a reversing or normal advancing mode, thereby being beneficial to further improving the unloading efficiency.)

1. The movable type rear unloading platform based on grain transportation comprises a bottom frame (1), a turning plate (2), a first approach bridge (3), a second approach bridge (4) and a transition platform (7), and is characterized in that the first approach bridge (3) and the second approach bridge (4) are positioned at two ends of the bottom frame (1), the bottom frame (1) and the first approach bridge (3) are fixed through bolts, the transition platform (7) is fixedly connected with the bottom frame (1) and the second approach bridge (4) through bolts, two groups of driving wheel assemblies (8) and two groups of steering wheel assemblies (9) are mounted on the bottom frame (1), the driving wheel assemblies (8) are positioned at one end close to the first approach bridge (3), and the steering wheel assemblies (9) are positioned at one end close to the second approach bridge (4);

the turnover plate (2) is arranged above the bottom frame (1), one end of the bottom frame (1), which is close to the second approach bridge (4), is provided with an installation seat (17), one end of the turnover plate (2) is rotatably connected with the installation seat (17) through a turnover shaft (18), the other end of the turnover plate (2) is provided with two groups of herringbone frames (5), the bottom frame (1) is provided with two groups of main oil cylinders (6), and the top ends of the main oil cylinders (6) are connected with the herringbone frames (5); a hydraulic system (10) is installed on the chassis (1), two groups of lifting wheel stoppers (15) are installed at one end, close to the second approach bridge (4), of the turning plate (2), and the hydraulic system (10) is used for controlling the main oil cylinder (6), the driving wheel assembly (8), the steering wheel assembly (9) and the lifting wheel stoppers (15);

the transition platform (7) comprises a horizontal table (701), a U-shaped groove (702), a blanking port (703), a movable bearing plate (704), a driving motor (705), a first limiting guide groove (706), a second limiting guide groove (707), a bidirectional screw (708), a guide rod (709), a first guide block (710), a second guide block (711) and a support frame (712); the horizontal table (701) is fixedly installed at the top of the support frame (712) through bolts, a U-shaped groove (702) is formed in the top of the horizontal table (701), a blanking port (703) is formed in the bottom of the horizontal table (701), the blanking port (703) is located below the U-shaped groove (702) and communicated with the U-shaped groove, a first limiting guide groove (706) and a second limiting guide groove (707) are formed in the horizontal table (701), and the first limiting guide groove (706) and the second limiting guide groove (707) are located on two sides of the U-shaped groove (702);

the number of activity loading board (704) is two sets of U type groove (702) of impressing downwards in, and installs first guide block (710) and second guide block (711) on activity loading board (704), rotate through the bearing and install two-way screw rod (708) in first spacing guide way (706), fixed mounting has guide bar (709) in second spacing guide way (707), and first guide block (710) are located first spacing guide way (706) and with two-way screw rod (708) threaded connection, second guide block (711) are located second spacing guide way (707) and with guide bar (709) sliding connection, there are driving motor (705) through motor cabinet fixed mounting on horizontal bench (701), and the output and the two-way screw rod (708) of driving motor (705) are connected.

2. The movable rear unloading platform based on grain transportation of claim 1, wherein the driving wheel assembly (8) comprises a first connecting frame (801), a driving wheel (802), a first jacking cylinder (803) and a connecting plate (804), the first connecting frame (801) is fixedly installed on the bottom frame (1) through bolts, a triangular support is arranged on one side of the first connecting frame (801), the first jacking cylinder (803) is arranged on the first connecting frame (801) and connected with the connecting plate (804), and the driving wheel (802) is installed at the bottom of the connecting plate (804).

3. The movable rear-dump platform based on grain transportation of claim 1, characterized in that the steering wheel assembly (9) comprises a second connecting frame (901), a steering wheel (902), a second jacking cylinder (903) and a connecting block (904), the second connecting frame (901) is installed on the underframe (1), the second jacking cylinder (903) is arranged on the second connecting frame (901), the connecting block (904) is installed on the second connecting frame (901), the connecting block (904) is connected with the steering wheel (902), and the other end of the second jacking cylinder (903) is connected with the middle part of the connecting block (904).

4. The movable type rear unloading platform based on grain transportation of claim 1, wherein a hydraulic station canopy (14) is fixedly installed at the top of the hydraulic system (10) through bolts, the hydraulic system (10) comprises an oil tank, an oil filling port and an oil discharging port are formed in the oil tank, and an oil return pipe, a radiator, a valve group, a motor, an oil pump, a valve gate, a filter and a manual pump are further arranged on the oil tank.

5. The movable type rear unloading platform based on grain transportation as claimed in claim 1, wherein a hopper (11) is arranged below the transition platform (7), a feeding hole is formed in the top of the hopper (11), a discharging pipe with a flow control device is arranged at the bottom of the hopper (11), a conveying device (12) is arranged below the hopper (11), and a discharging hole of the discharging pipe is positioned right above the conveying device (12).

6. The mobile rear-discharge platform based on grain transportation of claim 5, characterized in that two sets of baffles (16) are installed on the top of the transition platform (7), and the dust absorption processing assembly (13) is installed on each set of baffles (16).

7. The movable type rear unloading platform based on grain transportation according to claim 6, wherein the dust absorption processing assembly (13) comprises a dust removal box (131), a transverse pipe (133), a dust hood (134), a dust suction pipe (135) and a fan (136), the transverse pipe (133) is installed on one opposite side of the baffle (16), a plurality of groups of dust suction hoods (134) communicated with the transverse pipe (133) are installed on the transverse pipe (133), the dust removal box (131) is installed on one side, back to the transverse pipe (133), of the baffle (16), the dust suction pipe (135) is communicated with the transverse pipe (133) and the dust removal box (131), and the fan (136) is installed on the dust removal box (131).

8. The movable type rear unloading platform based on grain transportation according to claim 7, wherein a dust removal cavity (132) is formed in the dust removal box (131), a filter screen (137) and an activated carbon adsorption net (138) are installed in the dust removal cavity (132), the filter screen (137) is located at a position close to the communication position of the dust removal pipe (135) and the dust removal cavity (132), and the activated carbon adsorption net (138) is located at a position close to the fan (136).

9. The mobile rear unloading platform based on grain transportation of claim 1, wherein an angle control sensor is installed on the overturning shaft (18), an overpressure pressure maintaining and emergency unloading device is installed on the hydraulic system (10), and the rear unloading platform controls unloading and walking through a remote controller.

10. The use method of the movable rear-dump platform based on grain transportation is characterized by comprising the following steps:

step one, backing a truck from the direction of a first approach bridge (3) to enter a turning plate (2), or advancing the truck from the direction of a second approach bridge (4) to the turning plate (2);

secondly, after the rear wheel of the truck enters the position of the liftable catch wheel device (15), the liftable catch wheel device (15) rises and extends to the upper part of the turnover plate (2) so as to limit the rear wheel of the truck;

step three, starting a driving motor (705), enabling the driving motor (705) to enable a bidirectional screw rod (708) to rotate, enabling two groups of first guide blocks (710) to move in a backward mode, and enabling the distance between two groups of movable bearing plates (704) to be continuously increased until the two groups of movable bearing plates (704) do not shield the blanking port (703);

step four, the truck is extinguished, the hand brake is tightened, the compartment door at the tail part of the truck is opened to automatically unload the grains, and a driver gets off the truck and moves back to a safe area outside the guardrail;

step five, after the grain self-flow unloading is finished, starting a main oil cylinder (6) to extend the grain self-flow unloading, slowly jacking a turning plate (2) by the main oil cylinder (6) to enable the turning plate (2) to incline to a set angle, wherein the set angle is more than or equal to 35 degrees, and allowing grains to fall along the inclined direction until the grain self-flow unloading is finished;

during unloading, grains fall into the hopper (11) through the blanking port (703), the grains in the hopper (11) downwards enter the conveying device (12) through the discharging pipe, and the conveying device (12) conveys the grains out;

after the grain is unloaded, starting the main oil cylinder (6) to shorten the grain, and pulling the turning plate (2) by the main oil cylinder (6) to enable the turning plate (2) to descend to the initial position;

seventhly, the liftable catch wheel device (15) descends to the position below the turning plate (2), and the liftable catch wheel device (15) does not limit the rear wheel of the truck any more;

and step eight, a driver enters the truck and drives the truck to drive away from the turning plate (2) through the first approach bridge (3).

Technical Field

The invention relates to the technical field of grain transportation equipment, in particular to a movable rear-dump platform based on grain transportation.

Background

Grain refers to the general term of various plant seeds in cooked food and can also be generally called as grain, the grain crops contain rich nutrient substances which mainly comprise protein, vitamins, dietary fibers, fat, starch and the like, and during the transportation process of the grain, a truck is often needed, namely, the grain is loaded into the truck, then the grain is transported to a destination through the truck, and then the grain on the truck is unloaded;

however, some existing trucks do not have a self-unloading capability, and the loading truck compartment of the existing truck cannot be turned over at a certain angle, so that grains in the compartment fall down along an inclined direction, and therefore when the truck without the self-unloading capability encounters, the grains in the compartment need to be unloaded manually, the operation is complex, the operation efficiency is low, and the unloading cost is increased;

in view of the above technical drawbacks, a solution is proposed.

Disclosure of Invention

The invention aims to provide a movable rear unloading platform based on grain transportation, which can assist a truck without self-unloading capacity to unload materials without manually unloading the grains in a carriage, thereby improving the operation efficiency and reducing the unloading cost, the truck can enter a turning plate in a reversing mode and can drive to the turning plate in a normal advancing mode by arranging a transition platform, a first approach bridge and a second approach bridge, the invention not only helps to avoid the difficulty of backing the truck, but also can lead the trucks loaded with grains to queue up and unload the materials in sequence, thereby further improving the unloading efficiency, the rear unloading platform is controlled by full remote control operation, the unloading operation can be completed by only one person, the labor intensity is greatly reduced, the labor cost is further reduced, and the unloading requirements of bulk particle material vehicles such as grains, coal, feed, ores and the like can be met, application scope is wide, through setting up drive wheel subassembly and directive wheel subassembly, make the self-carrying walking function of back-off platform, the transport that has both made things convenient for the back-off platform is in order to satisfy a plurality of requirements of unloading the point, the position of the platform of unloading after being convenient for to be adjusted again so that the truck can drive into smoothly on the back-off platform, and through setting up the dust absorption processing subassembly, effectively reduce the harm that the in-process dust of unloading is scattered and is brought to near air operating personnel's the healthy near, some current trucks do not have self-discharging ability itself, need lift off the grain in the carriage through artificial mode, the operation is complicated, the operating efficiency is low, the problem of unloading the cost has been increased.

In order to achieve the purpose, the invention provides the following technical scheme:

the movable rear unloading platform based on grain transportation comprises a bottom frame, a turning plate, a first approach bridge, a second approach bridge and a transition platform, wherein the first approach bridge and the second approach bridge are positioned at two ends of the bottom frame, the bottom frame and the first approach bridge are fixed through bolts, the transition platform is fixedly connected with the bottom frame and the second approach bridge through bolts, two groups of driving wheel assemblies and two groups of steering wheel assemblies are mounted on the bottom frame, the driving wheel assemblies are positioned at one end close to the first approach bridge, and the steering wheel assemblies are positioned at one end close to the second approach bridge; the turnover plate is arranged above the bottom frame, one end of the bottom frame, which is close to the second approach bridge, is provided with an installation seat, one end of the turnover plate is rotatably connected with the installation seat through a turnover shaft, the other end of the turnover plate is provided with two groups of herringbone frames, two groups of main oil cylinders are arranged on the bottom frame, and the top ends of the main oil cylinders are connected with the herringbone frames; the chassis is provided with a hydraulic system, one end of the turning plate close to the second approach bridge is provided with two groups of liftable catch wheel devices, and the hydraulic system is used for controlling the main oil cylinder, the driving wheel assembly, the steering wheel assembly and the liftable catch wheel devices;

the transition platform comprises a horizontal table, a U-shaped groove, a blanking port, a movable bearing plate, a driving motor, a first limiting guide groove, a second limiting guide groove, a bidirectional screw, a guide rod, a first guide block, a second guide block and a support frame; the horizontal table is fixedly installed at the top of the support frame through bolts, a U-shaped groove is formed in the top of the horizontal table, a blanking port is formed in the bottom of the horizontal table, and the blanking port is located below the U-shaped groove and communicated with the U-shaped groove;

first spacing guide way and the spacing guide way of second have been seted up in the horizontal stand, and first spacing guide way and the spacing guide way of second are located the both sides in U type groove, the figure of activity loading board is two sets of U type inslots of impressing downwards, and installs first guide block and second guide block on the activity loading board, rotate through the bearing in the first spacing guide way and install two-way screw rod, fixed mounting has the guide bar in the spacing guide way of second, and first guide block be located first spacing guide way and with two-way screw rod threaded connection, the second guide block be located the spacing guide way of second and with guide bar sliding connection, there is driving motor through motor cabinet fixed mounting on the horizontal stand, and driving motor's output and two-way screw rod are connected.

Further, the driving wheel assembly comprises a first connecting frame, a driving wheel, a first jacking cylinder and a connecting plate, the first connecting frame is fixedly installed on the bottom frame through bolts, one side of the first connecting frame is a triangular support, the first jacking cylinder is arranged on the first connecting frame and connected with the connecting plate, and the driving wheel is installed at the bottom of the connecting plate.

Further, the directive wheel assembly comprises a second connecting frame, a directive wheel, a second jacking cylinder and a connecting block, the second connecting frame is installed on the underframe, the second jacking cylinder is arranged on the second connecting frame, the connecting block is installed on the second connecting frame, the connecting block is connected with the directive wheel, and the other end of the second jacking cylinder is connected with the middle of the connecting block.

Further, there is a hydraulic station canopy at the top of the hydraulic system through bolt fixed mounting, the hydraulic system includes an oil tank, the oil tank is provided with an oil filler and an oil drain, and the oil tank is further provided with an oil return pipe, a radiator, a valve group, a motor, an oil pump, a valve gate, a filter and a manual pump.

Further, the below of transition platform is equipped with the hopper, the feed inlet has been seted up at the top of hopper, the bottom installation of hopper has flow control device's row material pipe, and the below of hopper is equipped with conveyor, arranges the discharge gate of material pipe and is located conveyor directly over.

Furthermore, two groups of baffles are installed at the top of the transition platform, and dust absorption processing assemblies are installed on the two groups of baffles.

Further, the dust absorption processing subassembly includes the dust removal case, violently manages, suction hood, dust absorption pipe and fan, and is two sets of violently the pipe is installed to the relative one side of baffle, violently install the suction hood of multiunit rather than intercommunication on the pipe, the dust removal case is installed to the one side that the baffle was violently managed dorsad, the dust absorption pipe intercommunication is violently managed and the dust removal case, and installs the fan on the dust removal case.

Further, the dust removal incasement has seted up the dust removal chamber, filter screen and active carbon adsorption net are installed to the dust removal intracavity, and the filter screen is located the position that is close to dust absorption pipe and dust removal chamber intercommunication, and the active carbon adsorption net is located the position that is close to the fan.

Furthermore, an angle control sensor is installed on the turnover shaft, an overpressure pressure maintaining and emergency unloading device is installed on the hydraulic system, and the rear unloading platform controls unloading and walking through a remote controller.

Furthermore, the invention also provides a use method of the movable rear unloading platform based on grain transportation, which comprises the following steps:

step one, backing a truck from the direction of a first approach bridge and entering the turning plate, or advancing the truck from the direction of a second approach bridge to the turning plate;

step two, after the rear wheel of the truck enters the position of the liftable catch wheel device, the liftable catch wheel device is lifted and extends to the upper part of the turnover plate so as to limit the rear wheel of the truck;

starting a driving motor, enabling the two-way screw rod to rotate by the driving motor, enabling the two groups of first guide blocks to move in a back-to-back mode, and enabling the distance between the two groups of movable bearing plates to be continuously increased until the two groups of movable bearing plates do not shield the blanking port any more;

step four, the truck is extinguished, the hand brake is tightened, the compartment door at the tail part of the truck is opened to automatically unload the grains, and a driver gets off the truck and moves back to a safe area outside the guardrail;

step five, after the grain self-flow unloading vehicle is finished, starting a main oil cylinder to extend, slowly jacking a turning plate by the main oil cylinder to enable the turning plate to incline to a set angle, wherein the set angle is more than or equal to 35 degrees, and allowing grains to fall along the inclined direction until the grains are completely unloaded;

during unloading, grains fall into the hopper through the blanking port, the grains in the hopper downwards enter the conveying device through the discharging pipe, and the conveying device conveys the grains out;

after the grain is unloaded, starting a main oil cylinder to shorten the grain, and pulling a turning plate by the main oil cylinder to enable the turning plate to descend to an initial position;

seventhly, the liftable catch wheel device descends to the position below the turning plate, and the liftable catch wheel device does not limit the rear wheel of the truck any more;

and step eight, a driver enters the truck and drives the truck to drive away from the turnover plate through the first approach bridge.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the rear wheels of the truck are limited by the liftable wheel blocking device, the turning plate is inclined by the main oil cylinder, grains fall along the inclined direction and fall into the hopper through the blanking port, the grains in the hopper downwards enter the conveying device through the discharging pipe, and the conveying device conveys the grains out, so that the truck without self-unloading capacity can be assisted to unload the grains, the grains in the carriage do not need to be unloaded manually, the operation efficiency is improved, and the unloading cost is reduced;

2. according to the invention, by arranging the transition platform, the first approach bridge and the second approach bridge, a truck can enter the turning plate in a reversing mode and can also drive to the turning plate in a normal advancing mode, so that the difficulty of reversing the truck is avoided, trucks loaded with grains can be queued and unloaded in sequence, and the unloading efficiency is further improved;

3. according to the invention, the rear unloading platform is controlled through full remote control operation, only one person is needed to complete the unloading operation, the labor intensity is greatly reduced, the labor cost is saved, the bearing platform is large, the lifting capacity is strong, the unloading requirement of grains can be met, the unloading requirement of bulk granular material vehicles such as coal, feed and ore can also be met, and the application range is wide;

4. according to the invention, the driving wheel assembly and the steering wheel assembly are arranged, so that the rear-unloading platform has a walking function, the rear-unloading platform is convenient to carry so as to meet the requirements of a plurality of unloading points, the direction of the rear-unloading platform is convenient to adjust so that a truck can smoothly drive into the rear-unloading platform, the operation is simple, and the use is facilitated;

5. according to the invention, two groups of baffles are arranged at the top of the transition platform, so that the function of guiding the driving truck is achieved, the driving truck smoothly drives into the turning plate, the falling grains can enter the blanking port and can be prevented from being sprinkled to two sides, and the dust absorption treatment components are arranged on the two groups of baffles, so that the harm to the health of operators nearby in the air due to the scattering of dust in the unloading process is effectively reduced, and the dust pollution to the nearby environment can be reduced.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings;

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a perspective view of the base frame and the flap of the present invention;

FIG. 3 is a perspective view of the undercarriage of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is an unloading state diagram of the present invention;

FIG. 6 is a schematic front view of a transition platform according to the present invention;

FIG. 7 is a top view of a transition platform according to the present invention;

FIG. 8 is a cross-sectional view (looking down) of the transition platform of the present invention;

FIG. 9 is a schematic diagram of the hydraulic system of the present invention;

FIG. 10 is a schematic view of the construction of the drive wheel assembly of the present invention;

FIG. 11 is a schematic view of the construction of a steerable wheel assembly according to the present invention;

fig. 12 is a schematic view of the attachment of the baffle plate and the dust absorption process assembly of the present invention.

Reference numerals: 1. a chassis; 2. turning over a plate; 3. a first approach bridge; 4. a second approach bridge; 5. a herringbone frame; 6. a master cylinder; 7. a transition platform; 701. a horizontal table; 702. a U-shaped groove; 703. a blanking port; 704. a movable bearing plate; 705. a drive motor; 706. a first limit guide groove; 707. a second limit guide groove; 708. a bidirectional screw; 709. a guide bar; 710. a first guide block; 711. a second guide block; 712. a support frame; 8. a drive wheel assembly; 801. a first connecting frame; 802. a drive wheel; 803. a first jacking cylinder; 804. a connecting plate; 9. a steering wheel assembly; 901. a second link frame; 902. a steering wheel; 903. a second jacking cylinder; 904. connecting blocks; 10. a hydraulic system; 11. a hopper; 12. a conveying device; 13. a dust absorption treatment assembly; 131. a dust removal box; 132. a dust removal cavity; 133. a transverse tube; 134. a dust hood; 135. a dust collection pipe; 136. a fan; 137. a filter screen; 138. an activated carbon adsorption net; 14. a hydraulic station canopy; 15. a wheel stopper capable of lifting; 16. a baffle plate; 17. a mounting seat; 18. a turning shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1-9, the mobile rear unloading platform based on grain transportation provided by the invention comprises a bottom frame 1, a turning plate 2, a first approach bridge 3, a second approach bridge 4 and a transition platform 7, wherein the first approach bridge 3 and the second approach bridge 4 are positioned at two ends of the bottom frame 1, the underframe 1 is fixed with the first approach bridge 3 by bolts (or connected by hanging), the transition platform 7 is fixedly connected with the underframe 1 and the second approach bridge 4 by bolts (or connected by hanging), the turning plate 2 is arranged above the underframe 1, one end of the underframe 1 close to the second approach bridge 4 is provided with a mounting seat 17, one end of the turning plate 2 is rotationally connected with the mounting seat 17 by a turning shaft 18, the other end of the turning plate 2 is provided with a propeller strut 5, the propeller struts 5 are two in number and are symmetrical about the turning plate 2, two groups of main oil cylinders 6 are arranged on the underframe 1, and the top ends of the main oil cylinders 6 are connected with the propeller struts 5; a hydraulic system 10 is installed on the underframe 1, two groups of liftable catch wheel devices 15 are installed at one end of the turning plate 2 close to the second approach bridge 4, the liftable catch wheel devices 15 are controlled to lift through catch wheel oil cylinders, and the hydraulic system 10 is used for controlling the main oil cylinder 6 and the liftable catch wheel devices 15; when the rear wheel of the truck enters the position of the liftable catch wheel device 15, the liftable catch wheel device 15 rises and extends to the upper part of the turning plate 2 so as to limit the rear wheel of the truck; then, the main oil cylinder 6 is started to extend, the main oil cylinder 6 slowly jacks up the turning plate 2 to enable the turning plate 2 to incline for a certain angle, and finally, grains fall along the inclined direction to finish the unloading operation;

a hopper 11 is arranged below the transition platform 7, a feed inlet is formed in the top of the hopper 11, a discharge pipe with a flow control device is arranged at the bottom of the hopper 11, a conveying device 12 is arranged below the hopper 11, a discharge outlet of the discharge pipe is positioned right above the conveying device 12, and the unloading efficiency is obviously improved by configuring the flow control hopper 11; the transition platform 7 comprises a horizontal table 701, a U-shaped groove 702, a blanking port 703, a movable bearing plate 704, a driving motor 705, a first limiting guide groove 706, a second limiting guide groove 707, a bidirectional screw 708, a guide rod 709, a first guide block 710, a second guide block 711 and a support frame 712; the horizontal table 701 is fixedly installed at the top of the supporting frame 712 through bolts, a U-shaped groove 702 is formed in the top of the horizontal table 701, a blanking port 703 is formed in the bottom of the horizontal table 701, the blanking port 703 is located below and communicated with the U-shaped groove 702, a feeding port of the hopper 11 is located right below the blanking port 703, during unloading, grains fall into the hopper 11 through the blanking port 703, the grains in the hopper 11 downwards enter the conveying device 12 through a discharging pipe, and the conveying device 12 conveys the grains out;

a first limit guide groove 706 and a second limit guide groove 707 are arranged in the horizontal table 701, the first limit guide groove 706 and the second limit guide groove 707 are positioned at two sides of the U-shaped groove 702, two groups of movable bearing plates 704 are pressed downwards into the U-shaped groove 702, a first guide block 710 and a second guide block 711 are arranged on the movable bearing plates 704, a bidirectional screw 708 is rotatably arranged in the first limit guide groove 706 through a bearing, a guide rod 709 is fixedly arranged in the second limit guide groove 707, the first guide block 710 is positioned in the first limit guide groove 706 and is in threaded connection with the bidirectional screw 708, the second guide block 711 is positioned in the second limit guide groove 707 and is in sliding connection with the guide rod 709, the guide rod 709 plays a role in guiding the second guide block 711, a driving motor 705 is fixedly arranged on the horizontal table 701 through a motor base, and the output end of the driving motor 705 is connected with the bidirectional screw 708, the driving motor 705 is used for driving the bidirectional screw 708; the bidirectional screw 708 is rotated by the driving motor 705, the two groups of first guide blocks 710 move back to back or oppositely, the distance between the two groups of movable bearing plates 704 continuously increases or continuously decreases, when the distance between the two groups of movable bearing plates 704 continuously increases, the two groups of movable bearing plates 704 do not shield the blanking port 703 any more, at the moment, unloading can be performed, when the distance between the two groups of movable bearing plates 704 continuously decreases, the two groups of movable bearing plates 704 seal the blanking port 703, and at the moment, the truck can be driven into the truck through the second approach bridge 4 and the transition platform 7;

the top of the hydraulic system 10 is fixedly provided with a hydraulic station canopy 14 through bolts, the hydraulic station canopy 14 plays a role in keeping off rain and shading sun, the hydraulic system 10 comprises an oil tank, the oil tank is an oil storage container, the oil tank is provided with an oil filling port and an oil discharge port, oil is replenished into the oil tank through the oil filling port, oil in the oil tank is discharged through the oil discharge port, the oil tank is also provided with an oil return pipe, a radiator, a valve bank, a motor, an oil pump, a valve gate, a filter and a manual pump, the radiator is used for radiating heat of an oil return pipeline, the motor is used for driving the oil pump, the oil pump is used for conveying the oil, the filter is used for filtering the oil in a main oil pipeline, the manual pump is used for descending the turnover plate 2 in an abnormal state in a manual mode, an angle control sensor is arranged on a turnover shaft 18, and the angle and the lateral angle error of the turnover plate 2 are accurately controlled by matching with a two-shaft angle control sensor, the hydraulic system 10 is provided with an overpressure pressure maintaining and emergency unloading device, the rear unloading platform controls unloading and walking through a remote controller, the whole machine is fully remotely controlled in function, unloading operation can be completed by only one person, labor intensity is greatly reduced, and labor cost is saved.

Example two:

as shown in fig. 7 and fig. 12, the present embodiment is different from embodiment 1 in that two sets of baffles 16 are installed on the top of the transition platform 7, the two sets of baffles 16 are installed to guide the entering truck to smoothly enter the turning plate 2, and also help to make the falling grains enter the blanking port 703 to prevent the grains from spilling to both sides, and dust absorption processing assemblies 13 are installed on both sets of baffles 16, each dust absorption processing assembly 13 includes a dust removal box 131, a horizontal pipe 133, a dust hood 134, a dust collection pipe 135 and a fan 136, a horizontal pipe 133 is installed on one side of each set of baffles 16 opposite to each other, the dust hoods 134 communicated with each other on the horizontal pipes 133 (or the baffles 16 are provided with grooves, the horizontal pipes 133 and the dust hoods 134 are located in the grooves to prevent the trucks from being damaged due to touching the dust hoods 134 and the horizontal pipes 133 during the entering process), the number of the dust hoods 134 is multiple sets and are equidistantly set, a dust removing box 131 is arranged on one surface of the baffle 16, which is back to the transverse pipe 133, the dust suction pipe 135 is communicated with the transverse pipe 133 and the dust removing box 131, a fan 136 is arranged on the dust removing box 131, and an air outlet of the fan 136 faces the outside;

the dust removal box 131 is internally provided with a dust removal cavity 132, the dust removal cavity 132 is internally provided with a filter screen 137 and an active carbon adsorption net 138, the filter screen 137 is positioned at a position close to the communication position of the dust removal pipe 135 and the dust removal cavity 132, the active carbon adsorption net 138 is positioned at a position close to the fan 136, the fan 136 is started in the discharging process, dust generated in the grain falling process is scattered into the surrounding environment, due to the action of the fan 136, the dust hood 134 sucks dust gas, the dust gas is conveyed into the dust removal box 131 through the dust suction pipe 135, the filter screen 137 and the active carbon adsorption net 138 filter and adsorb the dust gas, the fan 136 discharges the filtered gas, the dust is effectively prevented from scattering in the discharging process, harm is brought to the health of operators nearby air, and dust pollution brought to the nearby environment can be reduced.

Example three:

as shown in fig. 1, 10 and 11, the present embodiment is different from embodiments 1 and 2 in that two sets of driving wheel assemblies 8 and two sets of steering wheel assemblies 9 are mounted on the chassis 1, the two sets of driving wheel assemblies 8 are symmetrical with respect to the turning plate 2, the two sets of steering wheel assemblies 9 are symmetrical with respect to the turning plate 2, the driving wheel assemblies 8 are located at one end close to the first approach bridge 3, and the steering wheel assemblies 9 are located at one end close to the second approach bridge 4; the driving wheel assembly 8 comprises a first connecting frame 801, a driving wheel 802, a first jacking cylinder 803 and a connecting plate 804, wherein the first connecting frame 801 is fixedly installed on the chassis 1 through bolts, one side of the first connecting frame 801 is a triangular bracket, the first jacking cylinder 803 is arranged on the first connecting frame 801 and is connected with the connecting plate 804, the driving wheel 802 is installed at the bottom of the connecting plate 804, the driving wheel 802 descends through the extension of the first jacking cylinder 803, when the driving wheel 802 contacts with the ground, the rear unloading platform can move at the moment, and the driving wheel 802 ascends through the contraction of the first jacking cylinder 803 so as to retract the driving wheel 802;

the steering wheel assembly 9 is in the form of an aircraft landing gear and comprises a second connecting frame 901, a steering wheel 902, a second jacking cylinder 903 and a connecting block 904, wherein the second connecting frame 901 is installed on the underframe 1, the second jacking cylinder 903 is arranged on the second connecting frame 901, the connecting block 904 is installed on the second connecting frame 901, the connecting block 904 is connected with the steering wheel 902, the other end of the second jacking cylinder 903 is connected with the middle part of the connecting block 904, the steering wheel 902 is lowered through the extension of the second jacking cylinder 903, the steering wheel 902 is retracted through the contraction of the second jacking cylinder 903, and the hydraulic system 10 is connected with the first jacking cylinder 803 and the second jacking cylinder 903 and is used for controlling the extension and the contraction of the first jacking cylinder 803 and the second jacking cylinder 903;

the driving wheel assembly 8 and the steering wheel assembly 9 are arranged, so that the rear-unloading platform has a walking function, full hydraulic control is adopted, when the rear-unloading platform bears the load, the driving wheel 802 and the steering wheel 902 are folded, when the platform moves in an idle load, the driving wheel 802 and the steering wheel 902 bear the load, the rear-unloading platform moves, when the rear-unloading platform moves, firstly, the hopper 11, the transition platform 7 and the approach bridges at two ends are separated from the rear-unloading platform, then, the rear-unloading platform is controlled to move forwards or leftwards and rightwards by operating a remote controller, namely, the rear-unloading platform can be moved to a required position, the rear-unloading platform is convenient to carry so as to meet the requirements of a plurality of unloading points, the position of the rear-unloading platform is convenient to adjust so that a truck can smoothly drive into the rear-unloading platform, and the operation is simple and is beneficial to use.

The working process and the principle of the invention are as follows:

when in use, the driving motor 705 rotates the bidirectional screw 708, the two sets of first guide blocks 710 move in a backward direction, the distance between the two sets of movable bearing plates 704 continuously increases until the two sets of movable bearing plates 704 do not shield the material discharge port 703, the truck backs up from the direction of the first approach bridge 3 and enters the turning plate 2, when the rear wheel of the truck enters the position of the liftable wheel stopper 15, the liftable wheel stopper 15 rises and extends to the upper side of the turning plate 2 to limit the rear wheel of the truck, the rear door of the truck is opened to enable grain to flow automatically, after the grain self-flow unloading vehicle is finished, the main oil cylinder 6 extends and slowly jacks up the turning plate 2 to incline the turning plate 2, the grain falls along the inclined direction until the grain is completely unloaded, during the unloading process, the grain falls into the hopper 11 through the material discharge port 703, the grain in the hopper 11 downwards enters the conveying device 12 through the material discharge pipe, the conveying device 12 conveys grains out;

after the grains are unloaded, the main oil cylinder 6 contracts and pulls the turning plate 2, so that the turning plate 2 descends to an initial position and is in butt joint with the first approach bridge 3, the liftable catch wheel device 15 descends to the lower part of the turning plate 2, the liftable catch wheel device 15 does not limit the rear wheel of the truck, a driver enters the truck and drives the truck to leave the turning plate 2 through the first approach bridge 3, the truck without self-unloading capacity can be assisted to unload, the grains in a carriage do not need to be unloaded in a manual mode, the operation efficiency is improved, and the unloading cost is reduced;

moreover, a truck can also drive into the turning plate 2 from the direction of the second approach bridge 4, in the driving process of the truck, the movable bearing plate 704 seals the blanking port 703 to bear the truck, after the truck enters the turning plate 2, the movable bearing plate 704 does not seal the blanking port 703 to ensure the subsequent unloading operation, namely, the truck can also drive into the turning plate 2 in a normal advancing mode, and after the unloading operation is completed, the truck drives out from the direction of the first approach bridge 3, so that the difficulty of backing the truck is avoided, the trucks loaded with grains can be queued for unloading in sequence, and the unloading efficiency is further improved; and the whole machine has full remote control operation, can finish the unloading operation by only one person, greatly reduces the labor intensity, saves the labor cost, has a large bearing platform and strong lifting capability, can meet the unloading requirement of grains, can meet the unloading requirement of bulk granular material vehicles such as coal, feed, ore and the like, and has wide application range.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.