Hydraulic turning plate unloader platform for grain loading and unloading

Abstract

The invention relates to the technical field of unloading devices, and discloses a hydraulic turning plate unloader platform for grain loading and unloading, which comprises a rear seat, a base is arranged on one side of the rear seat, a platform plate is rotatably mounted on the rear seat, a truck is parked on the platform plate, portal frames are fixedly mounted on the two sides of the platform plate, and the portal frames are arranged on the base. The hydraulic rod drives the platform plate to achieve inclined grain unloading, a double fixing structure of the wheel blocking plate and the nylon rope is matched, the wheel blocking plate limits sliding of a truck from the bottom, the nylon rope binds the truck from the top, meanwhile, the portal frame forms lateral protection, and an all-directional safety protection system is formed. The problems that traditional grain unloading equipment is large in manual labor intensity and low in efficiency are solved, the potential safety hazards that a truck is prone to head warping, sliding and even rollover when a platform inclines are further avoided, and the safety and the high efficiency of grain unloading operation are greatly improved through combination of mechanical automatic operation and multiple protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unloading devices, in particular to a hydraulic flip plate unloading platform for grain loading and unloading. BACKGROUND

[0002] Generally, the hydraulic flip plate unloading platform for grain loading and unloading is a special equipment that realizes platform tilting by hydraulic drive, thereby driving the loaded vehicle to complete the grain unloading operation, which is widely used in grain storage, agricultural product processing, grain and oil logistics park, feed factory and other fields.

[0003] The hydraulic flip plate unloading platform mainly consists of a bottom support frame, a hydraulic drive assembly, a bearing platform, a guide mechanism and a control system, and its core working mode is as follows: first, drive the vehicle loaded with grain to the designated position of the bearing platform and preliminarily park, start the hydraulic drive assembly through the control system, extend the hydraulic cylinder to lift one end of the bearing platform, slowly tilt the platform around the hinge point, the grain slides from the vehicle compartment to the designated unloading area under the action of gravity, after unloading, the hydraulic drive assembly reverses the action to reset the bearing platform to the horizontal state, and the vehicle drives away from the platform to complete the operation.

[0004] The existing hydraulic flip plate unloading platform has the following technical problems:

[0005] First, the vehicle lacks sufficient limiting control structure on the platform, whether it is in the heavy state of full load of grain or in the empty state after unloading, when the bearing platform completes the unloading reset to the horizontal state, the vehicle will produce forward impact force due to inertia;

[0006] Second, the limiting mechanism of the existing platform is mostly fixed structure, while the types of loaded vehicles involved in actual grain loading and unloading operation are various, and the wheel spacing and body width of different vehicles are different, the fixed structure limiting mechanism cannot be flexibly adapted to vehicles of different specifications, and the applicability is not strong, and problems such as limiting failure or ineffective limiting are prone to occur. SUMMARY

[0007] The present application aims to solve the technical problems in the prior art by providing a hydraulic flip plate unloading platform for grain loading and unloading.

[0008] The purpose of the present application can be achieved by the following technical solutions:

[0009] A hydraulic flip plate unloading platform for grain loading and unloading, comprising:

[0010] The rear seat is provided with a base on one side, a platform plate is rotatably installed on the rear seat, a truck is parked on the platform plate, a portal frame is fixedly installed on both sides of the platform plate, a hydraulic rod is rotatably installed on the base, the hydraulic rod is rotatably connected with the portal frame, when the hydraulic rod is retracted, the platform plate rotates around the rear seat to a horizontal state, when the hydraulic rod is extended, the hydraulic rod rotates around the base and pushes the portal frame to move, so that the platform plate rotates around the rear seat to an inclined state, at this time, the horizontal height of the end of the platform plate away from the rear seat is higher than the horizontal height of the end of the platform plate close to the rear seat;

[0011] The wheel blocking plate is rotatably installed on the platform plate, and is driven to rotate by a built-in driving source of the platform plate, when the wheel blocking plate is raised by rotating, the wheel blocking plate abuts against the rear wheels of the truck.

[0012] The platform plate is provided with a plurality of winding rollers arranged at equal intervals on both sides, and two symmetrically arranged winding rollers correspond to one nylon rope, the two ends of the nylon rope are wound around the two symmetrically arranged winding rollers respectively, and the winding rollers are connected with the wheel blocking plate through a linkage assembly, when the wheel blocking plate is raised by rotating, the wheel blocking plate drives the winding rollers to rotate and wind the nylon rope through the linkage assembly, so that the nylon rope abuts against the top of the truck.

[0013] Preferably, the linkage assembly comprises a connecting rod, a rack plate and gears, the rack plate is slidably installed at the bottom of the platform plate, a plurality of gears are rotatably installed at the bottom of the platform plate, and the two ends of each gear are coaxially fixedly connected with two symmetrically arranged winding rollers, each gear is engaged with the rack plate, one end of the connecting rod is rotatably connected with one end of the rack plate close to the wheel blocking plate, and the other end of the connecting rod is rotatably connected with one end of the wheel blocking plate away from the rotating shaft, when the wheel blocking plate is raised by rotating, the wheel blocking plate drives the rack plate to move through the connecting rod, so that the gears drive the winding rollers to rotate and wind the nylon rope.

[0014] Preferably, one extension plate is fixedly installed at one end of each portal frame, a fixed frame is fixedly installed at the top of the extension plate, a bearing plate is arranged in the fixed frame, a corresponding wheel frame is arranged at the top of the bearing plate for each winding roller, a roller is rotatably installed on each wheel frame, and the nylon rope is connected with the winding roller by passing through the roller.

[0015] Preferably, the bottom of each wheel frame is connected with the top of the bearing plate through a spring, and the pre-tightening force of the spring makes the wheel frame rise, when the wheel blocking plate is retracted by rotating, the winding roller rotates to release the nylon rope, at this time, the spring pushes the wheel frame and the roller to rise above the truck.

[0016] Preferably, a vertical rod is fixedly installed at the bottom end of each wheel frame, and the vertical rod is slidably connected with the bearing plate.

[0017] Preferably, the bearing plate is slidingly mounted on a fixing frame, a threaded rod is rotatably mounted on the fixing frame, the threaded rod is in threaded connection with the bearing plate, and the threaded rod is driven to rotate by an output source.

[0018] Preferably, each of the extension plates is provided with a tensioning assembly, the tensioning assembly comprises a sliding plate and a plurality of movable pulleys, the sliding plate is slidingly mounted on the extension plate and is driven to move by a power member, the movable pulleys are rotatably mounted on the sliding plate, the movable pulleys are equidistantly arranged, and each movable pulley is in abutment with a nylon rope.

[0019] Preferably, the tensioning assembly further comprises a plurality of fixed pulleys, the fixed pulleys are rotatably mounted on the extension plate, each movable pulley corresponds to two fixed pulleys which are symmetrically arranged relative to the sliding plate, and the fixed pulleys and the movable pulleys are arranged on opposite sides of the nylon rope.

[0020] Advantages of the present application:

[0021] 1. In the present application, the hydraulic rod drives the platform plate to realize the inclination of unloading grain, and the double fixing structure of the blocking wheel plate and the nylon rope is used, the blocking wheel plate limits the sliding of the truck from the bottom, the nylon rope binds the truck from the top, the gantry forms lateral protection, and a full-range safety protection system is formed, thereby solving the problems of high labor intensity and low efficiency of traditional unloading equipment, avoiding the safety hazards of the truck tilting, sliding or even overturning when the platform is inclined, and greatly improving the safety and efficiency of unloading operation through the combination of mechanical automation operation and multiple protections.

[0022] 2. In the present application, the linkage assembly composed of the connecting rod, the rack plate and the gear directly transmits the lifting power of the blocking wheel plate to the winding roller, realizes the precise synchronization of the actions of the two, does not need to additionally add an independent driving source, and cooperates with the bearing plate height adjusting structure and the tensioning assembly, so that the bearing plate can be driven to rise and fall by the threaded rod to adapt to trucks of different heights, and the tension of the nylon rope can be adjusted by the opposite arrangement of the fixed pulleys and the movable pulleys to adapt to the relaxation of the rope after the adjustment of the bearing plate, thereby avoiding the defects of poor adaptability and complex structure of traditional equipment, simplifying the control logic, reducing the equipment failure rate and manufacturing cost.

[0023] 3. In the present application, the spring is arranged between the wheel frame and the bearing plate and cooperates with the vertical rod guide, the pre-tightening force of the spring can push the roller to rise and avoid the truck when the nylon rope is released, and the roller is lowered to adhere to the truck to guarantee the binding effect through the tension of the rope during winding, the vertical rod avoids the movement deviation of the wheel frame, and the sliding friction of the nylon rope is converted into rolling friction by the roller, thereby greatly reducing the rope wear and winding load, prolonging the service life of the nylon rope and reducing the energy consumption, and guaranteeing the stability and reliability of long-term operation of the equipment through self-adaptive adjustment and guide structure. BRIEF DESCRIPTION OF DRAWINGS

[0024] The application will be further described below with reference to the accompanying drawings.

[0025] Figure 1 is a schematic diagram of the overall structure of the application;

[0026] Figure 2 is a schematic diagram of the overall structure of the application;

[0027] Figure 3 is a schematic diagram of the overall structure of the application;

[0028] Figure 4 is a schematic diagram of the overall structure of the application;

[0029] Figure 5 is a schematic diagram of the overall structure of the application;

[0030] Figure 6 is a schematic diagram of the overall structure of the application;

[0031] In the figure: 1, rear seat; 2, base; 3, platform plate; 4, hydraulic rod; 5, gantry; 6, truck; 7, wheel blocking plate; 8, winding roller; 9, nylon rope; 10, extension plate; 11, fixed frame; 12, bearing plate; 13, wheel frame; 14, roller; 15, spring; 16, vertical rod; 17, connecting rod; 18, rack plate; 19, gear; 20, fixed pulley; 21, sliding plate; 22, movable pulley; 23, threaded rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0033] Please refer to Figures 1-6 The application is a hydraulic plate unloading machine platform for loading and unloading grain, which comprises:

[0034] The rear seat 1 is provided with a base 2 on one side, a platform plate 3 is rotatably installed on the rear seat 1, a truck 6 is used for parking on the platform plate 3, a gantry 5 is fixedly installed on both sides of the platform plate 3, a hydraulic rod 4 is rotatably installed on the base 2, the movable end of the hydraulic rod 4 is rotatably connected with the gantry 5, when the hydraulic rod 4 is retracted, the platform plate 3 rotates around the rear seat 1 to a horizontal state, when the hydraulic rod 4 is extended, the hydraulic rod 4 rotates around the base 2 and pushes the gantry 5 to move, so that the platform plate 3 rotates around the rear seat 1 to an inclined state, at this time, the horizontal height of the end of the platform plate 3 away from the rear seat 1 is higher than the horizontal height of the end of the platform plate 3 close to the rear seat 1;

[0035] The wheel blocking plate 7 is rotatably installed on the platform plate 3, the wheel blocking plate 7 is driven to rotate by the built-in driving source of the platform plate 3, when the wheel blocking plate 7 rotates and rises, the wheel blocking plate 7 abuts against the rear wheels of the truck 6;

[0036] The winding roller 8 is rotatably installed on both sides of the platform plate 3, a plurality of winding rollers 8 are arranged at equal intervals, and two symmetrically arranged winding rollers 8 correspond to one nylon rope 9, the two ends of the nylon rope 9 are wound around the two symmetrically arranged winding rollers 8 respectively, the winding roller 8 is connected with the wheel blocking plate 7 through a linkage assembly, when the wheel blocking plate 7 rotates and rises, the wheel blocking plate 7 drives the winding roller 8 to rotate and wind the nylon rope 9 through the linkage assembly, so that the nylon rope 9 abuts against the top of the truck 6.

[0037] In one case of the embodiment, the driving source can be selected from a servo motor, a hydraulic lifting assembly, etc., and other mechanisms capable of realizing rotary motion can also be selected, which is not specifically limited in the embodiment.

[0038] The working principle of the present application is as follows: initial parking stage: the hydraulic rod 4 is in a retracted state, driving the platform plate 3 to rotate around the rear seat 1 to a horizontal state, at the same time, the built-in driving source in the platform plate 3 is not started, the blocking wheel plate 7 is in a retracted state adhering to the platform plate 3, the winding roller 8 releases the nylon rope 9, the nylon rope 9 is in a relaxed state, there is no structural obstacle to interfere with the passage of the truck 6, and the truck 6 can smoothly drive to the designated area of the platform plate 3 to complete parking; fixed stage: the built-in driving source in the platform plate 3 is started, driving the blocking wheel plate 7 to rotate upward, in the initial state, the blocking wheel plate 7 maintains a predetermined gap with the rear wheels of the truck 6, at the same time, the blocking wheel plate 7 synchronously drives the two side winding rollers 8 to rotate through the linkage assembly, and the nylon rope 9 is wound, the wound nylon rope 9 is tensioned and abuts against the top of the truck 6, cooperates with the blocking wheel plate 7 in the waiting limiting state, and forms a binding and restraining structure in the up-down direction of the truck 6; inclined grain unloading stage: after the truck 6 is fixed, the hydraulic rod 4 is started to extend, rotates around the base 2 and pushes the gantry 5 to displace, and then drives the platform plate 3 to rotate around the rear seat 1 to a predetermined inclination angle, the truck 6 synchronously inclines with the platform plate 3, under the action of gravity, the truck 6 has a tendency to slide backward until the rear wheels abut against the blocking wheel plate 7, at this time, the truck 6 is completely limited, as the inclination angle of the platform plate 3 increases, the grain in the truck 6 is automatically slid under the action of gravity, the unloading operation is completed, the reset driving-off stage, after the unloading is completed, the hydraulic rod 4 is retracted, driving the platform plate 3 to reset to a horizontal state, the empty truck 6 will have a tendency to slide forward due to inertia during the resetting process of the platform plate 3, at this time, the tensioned nylon rope 9 can effectively constrain the impact force of the truck 6, preventing it from rushing out of the platform plate 3, at the same time, the forward sliding distance of the truck 6 is just enough to make the rear wheels separate from the limiting of the blocking wheel plate 7, providing space for the resetting of the blocking wheel plate 7, then the driving source is reversely operated, driving the blocking wheel plate 7 to rotate and retract to adhere to the platform plate 3, the linkage assembly synchronously drives the winding roller 8 to reversely rotate to release the nylon rope 9, and the truck 6 can smoothly drive off the platform plate 3.

[0039] It needs to be explained that: the platform plate 3 is the core component of carrying the truck 6 and realizing the inclined action of unloading grain, its horizontal state guarantees the smooth parking of the truck 6, and the inclined state provides power for the grain sliding, solving the problems of large labor intensity and low efficiency of traditional manual unloading, the blocking wheel plate 7 and the nylon rope 9 form a double fixing structure, the blocking wheel plate 7 limits the sliding of the truck 6 from the bottom, and the nylon rope 9 binds the truck 6 from the top, the two cooperate to solve the safety hazards of the truck 6 easily appearing head lifting, sliding or even overturning when the platform is inclined, the linkage assembly realizes the synchronous action of the blocking wheel plate 7 and the winding roller 8, without the need for additional independent driving source, simplifying the control logic and reducing the equipment failure rate, at the same time, the gantries 5 on both sides of the platform plate 3 can form lateral protection for the truck 6, preventing the truck 6 from appearing side sliding when it is inclined, further improving the safety and durability of the equipment and reducing the manufacturing and maintenance cost of the equipment.

[0040] As Figures 1-6As shown, in a preferred embodiment of the present invention, the linkage assembly includes a connecting rod 17, a rack plate 18, and gears 19. The rack plate 18 is slidably mounted on the bottom of the platform plate 3, and multiple gears 19 are rotatably mounted on the bottom of the platform plate 3. Each gear 19 is coaxially and fixedly connected to two symmetrically arranged take-up rollers 8 at both ends. Each gear 19 meshes with the rack plate 18. One end of the connecting rod 17 is rotatably connected to the end of the rack plate 18 near the baffle plate 7, and the other end of the connecting rod 17 is rotatably connected to the end of the baffle plate 7 away from the rotating shaft. When the baffle plate 7 rotates and rises, the baffle plate 7 drives the rack plate 18 to move through the connecting rod 17, so that the gears 19 drive the take-up rollers 8 to rotate and take up the nylon rope 9.

[0041] In practical application, when the drive source drives the baffle plate 7 to rotate upward, the end of the baffle plate 7 away from the rotating shaft makes an arc motion. The arc motion is converted into a linear sliding motion of the rack plate 18 along the bottom of the platform plate 3 through the connecting rod 17. Since the rack plate 18 is meshed with multiple gears 19, the linear motion of the rack plate 18 drives all gears 19 to rotate synchronously. The gears 19 are coaxially fixed with the winding roller 8, thereby driving the winding roller 8 to rotate synchronously, realizing the winding action of the nylon rope 9. This linkage structure ensures that the limiting action of the baffle plate 7 and the binding action of the nylon rope 9 are precisely matched, while simplifying the equipment structure and reducing maintenance. In addition, multiple gears 19 mesh with the same rack plate 18, which can realize the synchronous rotation of multiple take-up rollers 8, ensuring that the winding force of all nylon ropes 9 is uniform, avoiding the problem of uneven force on the truck 6 due to the uneven tension of a single nylon rope 9. Moreover, the drive source drives the baffle plate 7 to rotate downward and reset in the opposite direction, and drives the rack plate 18 to slide in the opposite direction through the connecting rod 17, thereby driving the gears 19 and the take-up rollers 8 to rotate in the opposite direction, realizing the release and relaxation of the nylon ropes 9. At this time, the baffle plate 7 is in contact with the platform plate 3 and the nylon ropes 9 do not interfere, ensuring that the truck 6 can smoothly enter and exit the platform plate 3, fully meeting the equipment state switching requirements in the operation process.

[0042] like Figures 1-4 As shown, in a preferred embodiment of the present invention, an extension plate 10 is fixedly installed at one end of each gantry frame 5, a fixing frame 11 is fixedly installed on the top of the extension plate 10, a bearing plate 12 is provided inside the fixing frame 11, each take-up roller 8 has a corresponding wheel frame 13 set on the top of the bearing plate 12, and a roller 14 is rotatably installed on each wheel frame 13, and the nylon rope 9 passes around the roller 14 and is connected to the take-up roller 8.

[0043] Specifically, the bottom of each wheel frame 13 is connected to the top of the bearing plate 12 via a spring 15. The preload of the spring 15 causes the wheel frame 13 to rise. When the wheel baffle 7 rotates and retracts, the take-up roller 8 rotates and releases the nylon rope 9. At this time, the spring 15 pushes the wheel frame 13 and the roller 14 to rise above the truck 6.

[0044] Specifically, a vertical rod 16 is fixedly installed at the bottom end of each wheel frame 13, and the vertical rod 16 is in sliding connection with the bearing plate 12.

[0045] In actual application, the nylon rope 9 is connected to the winding roller 8 after winding around the roller 14, the roller 14 can convert the sliding friction of the nylon rope 9 into rolling friction, greatly reducing the friction during winding and releasing of the nylon rope 9, reducing the wear of the nylon rope 9 and prolonging the service life of the nylon rope 9, and reducing the driving load of the winding roller 8 and energy consumption; the spring 15 at the bottom of the wheel frame 13 has a self-adaptive adjustment function, when the blocking wheel plate 7 is retracted and the winding roller 8 releases the nylon rope 9, the pre-tightening force of the spring 15 pushes the wheel frame 13 and the roller 14 to rise above the truck 6, avoiding interference of the roller 14 and the nylon rope 9 with the parking and driving away of the truck 6; when the winding roller 8 winds the nylon rope 9, the tension of the nylon rope 9 overcomes the pre-tightening force of the spring 15, driving the wheel frame 13 to descend, so that the nylon rope 9 closely adheres to the top of the truck 6, ensuring the binding effect; the sliding cooperation of the vertical rod 16 and the bearing plate 12 plays a guiding role in the lifting movement of the wheel frame 13, avoiding deviation and tilting of the wheel frame 13 during movement, ensuring that the roller 14 always precisely adheres to the nylon rope 9, and ensuring transmission stability.

[0046] As shown in Figures 1-4 As a preferred embodiment of the present application, the bearing plate 12 is slidingly installed on the fixed frame 11, a threaded rod 23 is rotatably installed on the fixed frame 11, the threaded rod 23 is in threaded connection with the bearing plate 12, and the threaded rod 23 is driven to rotate by an output source.

[0047] In one case of the present embodiment, the output source can be selected from a servo motor, a servo motor and other mechanisms capable of realizing rotary motion, which are not specifically limited in the present embodiment.

[0048] In actual application, when it is necessary to adapt to trucks 6 of different heights, the output source is started to drive the threaded rod 23 to rotate, since the threaded rod 23 is in threaded connection with the bearing plate 12 and the bearing plate 12 is slidingly installed in the fixed frame 11, the rotary motion of the threaded rod 23 is converted into lifting motion of the bearing plate 12 along the fixed frame 11; the bearing plate 12 drives the wheel frame 13 and the roller 14 to synchronously lift, thereby adjusting the initial height of the nylon rope 9. This structure solves the problem that the traditional equipment cannot adapt to trucks 6 of different heights, by precisely adjusting the height of the bearing plate 12, it is ensured that the nylon rope 9 can accurately adhere to the top of trucks 6 of different heights during winding, which not only ensures the binding stability, but also avoids problems such as loosening of the binding due to too high height of the nylon rope 9, or interference with the top structure of the truck 6 due to too low height of the nylon rope 9.

[0049] As shown in Figures 1-4As shown, as a preferred embodiment of the present application, each extension plate 10 is provided with a tensioning assembly, which comprises a sliding plate 21 and a plurality of movable pulleys 22, the sliding plate 21 is slidingly installed on the extension plate 10 and is driven to move by a power member, and the plurality of movable pulleys 22 are rotatably installed on the sliding plate 21 and are arranged at equal intervals, and one movable pulley 22 abuts against one nylon rope 9.

[0050] Specifically, the tensioning assembly further comprises a plurality of fixed pulleys 20, which are rotatably installed on the extension plate 10, and one movable pulley 22 corresponds to two fixed pulleys 20 arranged symmetrically about the sliding plate 21, and the fixed pulleys 20 and the movable pulleys 22 are arranged on the opposite sides of the nylon rope 9.

[0051] In one case of the present embodiment, the power member can be selected from electric cylinders, electric telescopic rods and other mechanisms capable of realizing linear reciprocating motion, and the present embodiment does not make specific limitations here.

[0052] In actual application of the present embodiment, when there is a difference in the height of the truck 6, the height adjustment of the bearing plate 12 causes the nylon rope 9 to be loose, and it is difficult to tighten the nylon rope 9 and reliably abut against the top of the truck 6 by relying on the rotation of the winding roller 8 alone, at this time, the power member is started to drive the sliding plate 21 to slide along the guide rail of the extension plate 10; the sliding plate 21 synchronously drives the movable pulley 22 thereon to move, since the movable pulley 22 and the fixed pulley 20 are arranged on the two sides of the nylon rope 9, the displacement of the movable pulley 22 will change the arrangement track of the nylon rope 9, so that the nylon rope 9 forms a winding transmission path between the fixed pulley 20 and the movable pulley 22; through this track adjustment, the slack amount of the nylon rope 9 can be quickly offset to realize the re-tensioning of the nylon rope 9; for example, when the height reduction of the bearing plate 12 causes the nylon rope 9 to be loose, the power member is controlled to drive the sliding plate 21 to move to the right, the movable pulley 22 moves to the right accordingly, and the nylon rope 9 is pushed to the side, so that the nylon rope 9 is tightly attached to the wheel surface of the fixed pulley 20 and the movable pulley 22 to form a tensioning state, ensuring that the nylon rope 9 can stably abut against the top of the truck 6 and guaranteeing the reliability of the double fixing structure.

[0053] The above has described one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the implementation of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A hydraulic tipping unloading platform for grain loading and unloading, characterized in that, include: The rear seat (1) has a base (2) on one side. A platform plate (3) is rotatably mounted on the rear seat (1). The platform plate (3) is used to park the truck (6). A gantry frame (5) is fixedly mounted on both sides of the platform plate (3). A hydraulic rod (4) is rotatably mounted on the base (2). The movable end of the hydraulic rod (4) is rotatably connected to the gantry frame (5). When the hydraulic rod (4) retracts, the platform plate (3) rotates around the rear seat (1) to a horizontal state. When the hydraulic rod (4) extends, the hydraulic rod (4) rotates around the base (2) and pushes the gantry frame (5) to move, so that the platform plate (3) rotates around the rear seat (1) to an inclined state. At this time, the horizontal height of the end of the platform plate (3) away from the rear seat (1) is higher than the horizontal height of the end of the platform plate (3) close to the rear seat (1). The wheel baffle (7) is rotatably mounted on the platform plate (3). The wheel baffle (7) is driven to rotate by the drive source built into the platform plate (3). When the wheel baffle (7) rotates and rises, the wheel baffle (7) abuts against the rear wheel of the truck (6). The platform plate (3) has multiple equally spaced winding rollers (8) rotatably mounted on both sides of the platform plate (3), and two symmetrically arranged winding rollers (8) correspond to a nylon rope (9). The two ends of the nylon rope (9) are respectively wound around the two symmetrically arranged winding rollers (8). The winding rollers (8) are connected to the baffle plate (7) through a linkage assembly. When the baffle plate (7) rotates and rises, the baffle plate (7) drives the winding rollers (8) to rotate and wind up the nylon rope (9) through the linkage assembly, so that the nylon rope (9) abuts against the top of the truck (6).

2. The hydraulic tipping unloading platform for grain loading and unloading according to claim 1, characterized in that, The linkage assembly includes a connecting rod (17), a rack plate (18), and gears (19). The rack plate (18) is slidably mounted on the bottom of the platform plate (3). Multiple gears (19) are rotatably mounted on the bottom of the platform plate (3). Each gear (19) is coaxially and fixedly connected to two symmetrically arranged take-up rollers (8) at both ends. Each gear (19) meshes with the rack plate (18). One end of the connecting rod (17) is rotatably connected to the end of the rack plate (18) near the baffle plate (7). The other end of the connecting rod (17) is rotatably connected to the end of the baffle plate (7) away from the rotating shaft. When the baffle plate (7) rotates and rises, the baffle plate (7) drives the rack plate (18) to move through the connecting rod (17), so that the gears (19) drive the take-up rollers (8) to rotate and wind up the nylon rope (9).

3. The hydraulic tipping unloading platform for grain loading and unloading according to claim 1, characterized in that, Each of the gantry frames (5) has an extension plate (10) fixedly installed at one end. A fixing frame (11) is fixedly installed on the top of the extension plate (10). A bearing plate (12) is provided inside the fixing frame (11). Each of the take-up rollers (8) has a corresponding wheel frame (13) set on the top of the bearing plate (12). A roller (14) is rotatably installed on each wheel frame (13). The nylon rope (9) passes around the roller (14) and connects to the take-up roller (8).

4. A hydraulic tipping unloading platform for grain loading and unloading according to claim 3, characterized in that, Each wheel frame (13) is connected to the top of the support plate (12) by a spring (15) at its bottom. The preload of the spring (15) causes the wheel frame (13) to rise. When the wheel stop plate (7) rotates and retracts, the take-up roller (8) rotates and releases the nylon rope (9). At this time, the spring (15) pushes the wheel frame (13) and the roller (14) to rise above the truck (6).

5. A hydraulic tipping unloading platform for grain loading and unloading according to claim 4, characterized in that, Each of the wheel frames (13) has a vertical rod (16) fixedly installed at its bottom end, and the vertical rod (16) is slidably connected to the bearing plate (12).

6. A hydraulic tipping unloading platform for grain loading and unloading according to claim 3, characterized in that, The support plate (12) is slidably mounted on the fixed frame (11), and a threaded rod (23) is rotatably mounted on the fixed frame (11). The threaded rod (23) is threadedly connected to the support plate (12), and the threaded rod (23) is driven to rotate by the output source.

7. A hydraulic tipping unloading platform for grain loading and unloading according to claim 6, characterized in that, Each of the extension plates (10) is provided with a tensioning assembly, which includes a slide plate (21) and a plurality of movable pulleys (22). The slide plate (21) is slidably mounted on the extension plate (10) and is driven to move by a power component. The plurality of movable pulleys (22) are rotatably mounted on the slide plate (21) and are evenly spaced. One movable pulley (22) abuts against one nylon rope (9).

8. A hydraulic tipping unloading platform for grain loading and unloading according to claim 7, characterized in that, The tensioning assembly also includes multiple fixed pulleys (20), all of which are rotatably mounted on the extension plate (10), and one movable pulley (22) corresponds to two fixed pulleys (20) symmetrically arranged about the slide plate (21), and the fixed pulleys (20) and movable pulleys (22) are arranged on opposite sides about the nylon rope (9).

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