Pass-type automobile bulk cargo hydraulic unloading platform

Abstract

The invention belongs to the technical field of automatic warehouses, and particularly relates to a pass-type automobile bulk cargo hydraulic unloading platform which comprises a supporting seat, an unloading platen is rotatably connected to one end of the top of the supporting seat, and a conveying mechanism is fixedly mounted at one end of the supporting seat; hydraulic lifting mechanisms are installed on the two sides of the supporting base correspondingly, the tops of the hydraulic lifting mechanisms are fixedly connected with the bottom of the unloading platen, and two clamping groove parts matched with the hydraulic lifting mechanisms are arranged on the top of the supporting base. The rear obstacle mechanism is designed to be of a height-adjustable structure and adapts to blocking and limiting of rear wheels of vehicles with different heights according to different vehicles, the multiple positioning assemblies for sensing the positions of the vehicles are arranged, the vehicles can directly drive into the discharging station, the parking positions of the vehicles can be rapidly determined, the speed of the vehicles entering the discharging station is increased, and the working efficiency of the vehicles is improved. And the unloading efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automated warehouse technology, and in particular to a through-type hydraulic unloading platform for bulk materials from trucks. Background Technology

[0002] Automated warehouses are a new concept in logistics warehousing, realizing the rationalization of warehouse height, automation of storage and retrieval, and simplification of operation. The main body of an automated warehouse consists of racks, aisle stacker cranes, inbound (outbound) workbenches, and automatic transport (outbound) and operation control systems.

[0003] Hydraulic unloading platforms are hydraulically driven devices that connect trucks to loading and unloading areas. They use a hydraulic system to drive tilting ramps or platforms, automating the unloading of goods. These devices are widely used in logistics, warehousing, agriculture, and industry, offering advantages such as labor savings, increased efficiency, and reduced material loss. They are widely used in the unloading process of automated warehouses. However, existing hydraulic unloading platforms cannot allow vehicles to drive directly to the designated unloading position; they must reverse to reach the unloading location, requiring time to adjust the vehicle's position. Furthermore, the obstacle structure blocking the rear wheels of vehicles has a fixed height, making it impossible to simultaneously accommodate the unloading requirements of both large and small vehicles.

[0004] In view of this, the present invention provides a through-type hydraulic unloading platform for bulk materials from trucks to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a through-type hydraulic unloading platform for bulk materials from trucks.

[0006] This invention proposes a through-type hydraulic unloading platform for bulk materials from trucks, comprising a support base, an unloading platform rotatably connected to the top end of the support base, barriers installed on both sides of the unloading platform, a conveying mechanism fixedly installed at one end of the support base, and hydraulic lifting mechanisms installed on both sides of the support base, with the top of the hydraulic lifting mechanisms fixedly connected to the bottom of the unloading platform. The top of the support base has two slots that cooperate with the hydraulic lifting mechanisms. The front end of the unloading platform has two vertically distributed bottom grooves, with multiple storage slots between the two bottom grooves. A front obstruction mechanism is installed between the tops of the hydraulic lifting mechanisms. Multiple front positioning components, staggered with the storage slots, are installed on the top of the unloading platform. The end of the unloading platform near the conveying mechanism has two rectangular mounting slots, each containing a retractable rear obstruction mechanism. Multiple rear positioning components are installed on the top of the unloading platform.

[0007] Preferably, in this invention, a display showing the vehicle position, the height of the front obstacle mechanism, and the height of the rear obstacle mechanism is installed at the front end of the unloading platform, and a camera for observing the vehicle model is installed at the bottom of the display.

[0008] Preferably, in this invention, the conveying mechanism includes a box buried underground and two grid plates fixedly installed on the top of the box. Baffle plates are provided on both sides of the top of the grid plates. A conveying auger is installed at the bottom of the box, and a drive motor for rotating the conveying auger is installed on the side of the box. A feeding pipe is installed at one end of the conveying auger, and two guide plates distributed in a V-shape are installed on the inner wall of the box.

[0009] Preferably, in this invention, the hydraulic lifting mechanism includes two hydraulic bases fixedly installed on the sides of the support base, and a lifting frame fixedly installed on the bottom of the unloading platform. A gantry frame is installed at both ends of the lifting frame, and a multi-stage hydraulic cylinder is installed between the gantry frame and the hydraulic base.

[0010] Preferably, in this invention, the hydraulic lifting mechanism is further connected to a hydraulic control system, the hydraulic control system comprising: The displacement detection module is installed on the multi-stage hydraulic cylinder and is used to detect the extension and retraction distance of the multi-stage hydraulic cylinder. The regulating module consists of an electro-hydraulic proportional directional valve connected to a multi-stage hydraulic cylinder, which provides an independent and precisely adjustable flow supply to each multi-stage hydraulic cylinder. The control module reads and analyzes the signals from the displacement detection module, and controls each adjustment module to regulate the flow rate into / out of each multi-stage hydraulic cylinder, thereby driving the multi-stage hydraulic cylinders to move synchronously.

[0011] Preferably, in this invention, the front obstacle mechanism includes a fixed back plate installed between the gantry frame and the unloading platform, and a fixed cover plate installed on the outer side of the fixed plate. A plurality of vertically distributed swing arms are arranged between the fixed back plate and the fixed cover plate. Vertical hydraulic cylinders are installed on the sides of the swing arms. The front obstacle mechanism also includes an obstacle rod disposed inside the receiving slot, and the two ends of the obstacle rod are slidably connected to the bottom of the swing arms. The top ends of the obstacle rod are respectively fixedly connected to the corresponding vertical hydraulic cylinders on both sides. Anti-slip parts are provided on both sides of the top of the obstacle rod.

[0012] Preferably, in this invention, a plurality of pins are installed between the fixed back plate and the fixed cover plate, and the top of the swing arm is rotatably mounted on the outside of the pins, and a swing cylinder is hinged between the other side of the swing arm and the fixed back plate.

[0013] Preferably, in this invention, the rear obstacle mechanism includes a main frame installed above the unloading platform and a limiting bracket installed below the unloading platform. A blocking component is slidably installed between the main frame and the limiting bracket, and a lifting cylinder that drives the blocking component to extend and retract is installed in the middle of the limiting bracket.

[0014] Preferably, in this invention, the blocking member has an L-shaped structure, and a plurality of L-shaped movable grooves are provided on one side of the top of the blocking member. An L-shaped locking rod is rotatably installed inside the movable groove. A locking cylinder is hinged between the end of the locking rod and the blocking member. A plurality of photoelectric sensors are also installed on the front side of the blocking member at intervals from the locking rod.

[0015] Preferably, in this invention, the rear end of the unloading platform is provided with a bracket portion, and a support plate mechanism is installed inside the bracket portion. The support plate mechanism includes two limiting slide grooves provided at the ends of the bracket portion, and a limiting slide rod slidably installed between the two limiting slide grooves. A support plate is installed on the outer side of the limiting slide rod, and a support cylinder is hinged between the bottom of the support plate and the bracket portion.

[0016] Compared with the prior art, the present invention provides a through-type hydraulic unloading platform for bulk materials from trucks, which has the following advantages: The rear obstacle mechanism is designed with a height-adjustable structure, adapting to different vehicle heights to block and limit the rear wheels. It also features multiple positioning components that sense vehicle position, allowing vehicles to drive directly into the unloading station. The system quickly determines the vehicle's stopping position, accelerating its entry into the unloading station. When the vehicle enters the unloading platform area, cameras capture the vehicle's license plate and appearance information to determine the vehicle model. The vehicle's front wheels press against the front positioning component. Based on this information, the position of the front wheels is determined, providing a reference for the vehicle's position on the unloading platform, allowing the vehicle to stop quickly at the designated location, reducing adjustment time. After the driver stops the vehicle, when the last rear wheel presses against the rear positioning component, the display shows a stop signal. After the vehicle stops, based on the height of the rear wheels, the lifting cylinder pushes out the blocking component, blocking and limiting the rear wheels. Multi-stage hydraulic cylinders then operate, lifting the front end of the unloading platform. The vehicle's rear wheels press against the blocking component. At this point, photoelectric sensors detect the vehicle's position. The width of the rear wheels is controlled by the control module, which activates the locking cylinders located on both sides of the wheels. This pushes out the upper end of the locking lever, locking the rear wheels in place. Simultaneously, the swing cylinders located behind the front wheels move upwards, causing the barrier arm to rotate and press the barrier arm tightly against the rear of the front wheels. This effectively blocks the front wheels, preventing the vehicle's front from shifting during unloading and distributing the vehicle's weight. This reduces the support strength of the rear barrier mechanism. The supporting cylinders extend, moving the support plate towards the conveying mechanism. The support plate fills the gap between the unloading platform and the conveying mechanism, preventing material from falling into the gap below the unloading platform. During unloading, material falls from the grating into the box, where it is collected at the bottom by the side guide plates and pushed into the feeding pipe by the conveying auger, thus completing the unloading operation and improving unloading efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 2 This is a schematic diagram of the unloading process of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 3 This is a schematic diagram of the bottom structure of the unloading platform of a through-type hydraulic unloading platform for bulk materials from automobiles, as proposed in this invention. Figure 4 This is a schematic diagram of the conveying mechanism of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 5 This is a schematic diagram of the guide vane distribution structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 6 This is a schematic diagram of the unloading platform structure of a through-type hydraulic unloading platform for bulk materials from automobiles proposed in this invention. Figure 7 This is a schematic diagram of the front obstacle mechanism structure of a through-type hydraulic unloading platform for bulk materials from automobiles proposed in this invention; Figure 8 This is a schematic diagram of the swing arm structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 9 This is a schematic diagram of the support plate mechanism of a through-type hydraulic unloading platform for bulk materials from automobiles, as proposed in this invention. Figure 10 This is a schematic diagram of the rear obstacle mechanism structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 11 This is a schematic diagram of the blocking component structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention. Figure 12 This is a schematic diagram of the locking rod structure of a through-type hydraulic unloading platform for bulk materials from trucks, as proposed in this invention.

[0018] In the diagram: 1. Support base; 2. Display; 3. Front positioning assembly; 4. Front obstacle mechanism; 41. Fixed back plate; 42. Fixed cover plate; 43. Obstacle rod; 44. Anti-slip part; 45. Swing arm; 46. Vertical hydraulic cylinder; 47. Swing cylinder; 5. Unloading platform; 6. Enclosure; 7. Bracket; 8. Support plate mechanism; 81. Limiting slide groove; 82. Supporting cylinder; 83. Support plate; 84. Limiting slide bar; 9. Conveying mechanism; 91. Box body; 92. Guide plate; 93. Grating plate; 94. Baffle plate. 95 Feeding pipe, 96 Drive motor, 97 Conveying auger, 10 Rear obstacle mechanism, 101 Main frame, 102 Limit bracket, 103 Lifting cylinder, 104 Blocking component, 105 Movable groove, 106 Locking rod, 107 Locking cylinder, 11 Rear positioning assembly, 12 Slot, 13 Hydraulic lifting mechanism, 131 Hydraulic base, 132 Multi-stage hydraulic cylinder, 133 Lifting frame, 134 Gantry frame, 14 Rectangular mounting groove, 15 Storage groove, 16 Bottom groove. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] Reference Figure 1-12A through-type hydraulic unloading platform for bulk materials from trucks includes a support base 1 buried under the road, an unloading platform 5 rotatably connected to the top end of the support base 1, barriers 6 installed on both sides of the unloading platform 5, a display 2 installed at the front end of the unloading platform 5 to display the vehicle position, the height of the front obstacle mechanism 4 and the height of the rear obstacle mechanism 10, and a camera for observing the vehicle model installed at the bottom of the display 2. When a vehicle enters the unloading platform area, the camera captures the vehicle's license plate information and appearance information to determine the vehicle's model. A conveying mechanism 9 is fixedly installed at one end of the support base 1, and the top surface of the conveying mechanism 9 is flush with the top surface of the unloading platform 5. The conveying mechanism 9 includes a box 91 buried underground and two grid plates 93 fixedly installed on the top of the box 91. The grid plates 93 support the vehicle's movement, and when the vehicle unloads, the material falls into the box 91 through the holes of the grid plates 93. Both sides of the top of the grid plates 93 are provided with baffle plates 94 to prevent the material from overflowing the unloading range. A conveying auger 97 is installed at the bottom of the box 91, and a drive motor 96 is installed on the side of the box 91 to drive the conveying auger 97 to rotate. A feeding pipe 95 is installed at one end of the conveying auger 97. Two guide plates 92 with a V-shaped structure are installed on the inner wall of the box 91. When the vehicle unloads, the material falls into the box 91 from the grid plates 93, collects at the bottom of the box 91 through the action of the guide plates 92 on both sides, and is pushed into the feeding pipe 95 by the conveying auger 97 to complete the unloading operation of the vehicle. Hydraulic lifting mechanisms 13 are installed on both sides of the support base 1, and the top of the hydraulic lifting mechanism 13 is fixedly connected to the bottom of the unloading platform 5. Two slots 12 that cooperate with the hydraulic lifting mechanism 13 are provided at the top of the support base 1. The hydraulic lifting mechanism 13 includes two hydraulic bases 131 fixedly installed on the side of the support base 1, and a lifting frame 133 fixedly installed on the bottom of the unloading platform 5. A gantry frame 134 is installed at both ends of the lifting frame 133, and a multi-stage hydraulic cylinder 132 is installed between the gantry frame 134 and the hydraulic base 131. The hydraulic lifting mechanism 13 is also connected to a hydraulic control system, which includes: The displacement detection module is installed on the multi-stage hydraulic cylinder 132 and is used to detect the extension and retraction distance of the multi-stage hydraulic cylinder 132. The displacement detection module can be a magnetostrictive displacement sensor or other device that can monitor the extension and retraction distance of the multi-stage hydraulic cylinder 132 in real time. The regulating module consists of an electro-hydraulic proportional directional valve connected to the multi-stage hydraulic cylinder 132, which provides an independent and precisely adjustable flow supply to each multi-stage hydraulic cylinder 132. The control module reads the signal from the displacement detection module for comprehensive analysis. Based on the digital signal feedback from the displacement detection module of each multi-stage hydraulic cylinder 132, which measures the actual position in real time, the displacement detection module calculates the difference between the actual position and the target position of the multi-stage hydraulic cylinder 132 within the control cycle. The error is then fed into the control algorithm to calculate the control quantity required to eliminate the error. The control quantity is sent to each adjustment module in the form of voltage / current signals to adjust the flow rate into / out of each multi-stage hydraulic cylinder 132, thereby driving the piston movement of the multi-stage hydraulic cylinder 132, reducing the position error between the two multi-stage hydraulic cylinders 132, and realizing the synchronous movement of the multi-stage hydraulic cylinders 132 in the hydraulic lifting mechanism 13. The unloading platform 5 has two vertically distributed bottom grooves 16 at its front end, and multiple storage grooves 15 are provided between the two bottom grooves 16. A front obstacle mechanism 4 is installed between the top of the hydraulic lifting mechanism 13, and the bottom of the front obstacle mechanism 4 is embedded in the bottom grooves 16 and the storage grooves 15. Multiple front positioning components 3 are installed on the top of the unloading platform 5, which are staggered with the storage grooves 15. The front positioning components 3 are resistance strain gauge hydraulic pressure sensors or other devices that can sense the rolling of wheels in real time. The front obstacle mechanism 4 includes a fixed back plate 41 installed between the gantry frame 134 and the unloading platform 5, and a fixed cover plate 42 installed on the outer side of the fixed plate 41. Multiple pins are installed between the fixed back plate 41 and the fixed cover plate 42, and an L-shaped swing arm 45 is rotatably installed on the outer side of each pin. A vertical hydraulic cylinder 46 is installed on the side of the swing arm 45, and a swing cylinder 47 is hinged between the other side of the swing arm 45 and the fixed back plate 41. The front obstacle mechanism 4 also includes an obstacle rod 43 set inside the storage slot 15, and the two ends of the obstacle rod 43 are slidably connected to the bottom of the swing arm 45. The top of the two ends of the obstacle rod 43 are fixedly connected to the corresponding vertical hydraulic cylinders 46 on both sides. Anti-slip parts 44 are provided on both sides of the top of the obstacle rod 43. When in use, the front wheels of the vehicle press on the front positioning component 3. Based on the vehicle information, the position of the front wheels of the vehicle is determined, providing a reference for the position of the vehicle on the unloading platform 5. This allows the vehicle to stop quickly in the specified position, reducing the vehicle adjustment time. After the driver stops the vehicle, when the front end of the unloading platform 5 is lifted, the swing cylinder 47 located behind the front wheels of the vehicle performs a corresponding action, driving the barrier bar 43 to move upward. At the same time, the swing cylinder 47 drives the swing arm 45 to rotate, pressing the barrier bar 43 tightly against the rear of the front wheels of the vehicle. The barrier bar 43 effectively blocks the position of the front wheels of the vehicle, preventing the front of the vehicle from shifting during unloading, and distributing the weight of the vehicle to reduce the support strength of the rear barrier mechanism 10. Two rectangular mounting slots 14 are provided at one end of the unloading platform 5 near the conveying mechanism 9, and a telescopic rear obstacle mechanism 10 is installed inside each of the two rectangular mounting slots 14. Multiple rear positioning components 11 are installed on the top of the unloading platform 5. The rear positioning components 11 are resistance strain gauge hydraulic pressure sensors or other devices that can sense the rolling of wheels in real time, and the rear positioning components 11 are located at the front end of the obstacle mechanism 10. The rear obstacle mechanism 10 includes a main frame 101 installed above the unloading platform 5 and a limiting bracket 102 installed below the unloading platform 5. A blocking member 104 is slidably installed between the main frame 101 and the limiting bracket 102. A lifting cylinder 103 is installed in the middle of the limiting bracket 102 to drive the extension and retraction of the blocking member 104. The blocking member 104 has an L-shaped structure, and multiple L-shaped movable slots 105 are provided on one side of the top of the blocking member 104. An L-shaped locking rod 106 is rotatably installed inside the movable slots 105. A locking cylinder 107 is hinged between the end of the locking rod 106 and the blocking member 104. Multiple photoelectric sensors are also installed on the front side of the blocking member 104 at intervals from the locking rod 106. In use, the blocking member 104 retracts into the limiting bracket 102, and the top of the blocking member 104 is flush with the surface of the unloading platform 5. When the last rear wheel of the vehicle presses on the rear positioning component 11, the display 2 shows a stop signal. After the vehicle stops, according to the height of the rear wheel of the vehicle, the lifting cylinder 103 pushes out the blocking member 104 to block and limit the rear wheel of the vehicle. When the unloading platform 5 is lifted, the rear wheel of the vehicle squeezes the blocking member 104. At this time, the photoelectric sensor senses the width of the rear wheel of the vehicle, and the control module controls the locking cylinder 107 located on both sides of the wheel to move, push out the upper end of the locking rod 106, and use the locking rod 106 to lock and fix the rear wheel of the vehicle, thereby preventing the vehicle from shaking when unloading. The rear end of the unloading platform 5 is provided with a bracket 7, and the bracket 7 is equipped with a support plate mechanism 8. The support plate mechanism 8 includes two limiting slide grooves 81 disposed at the ends of the bracket part 7, and a limiting slide rod 84 slidably installed between the two limiting slide grooves 81. A support plate 83 is installed on the outside of the limiting slide rod 84, and a support cylinder 82 is hinged between the bottom of the support plate 83 and the bracket part 7. During use, as the unloading platform 5 tilts, the supporting cylinder 82 extends accordingly, driving the supporting plate 83 to move towards the conveying mechanism 9. The supporting plate 83 fills the gap between the unloading platform 5 and the conveying mechanism 9, preventing materials from falling into the gap below the unloading platform 5.

[0021] During use, the vehicle drives directly onto the unloading platform. As the vehicle enters the platform's area, the camera captures the vehicle's license plate and exterior information to determine its model. The vehicle's front wheels press against the front positioning component 3. Based on this information, the position of the front wheels is determined, providing a reference for the vehicle's position on the unloading platform 5. This allows the vehicle to stop quickly at a designated location, reducing adjustment time. After the driver stops the vehicle, when the last rear wheel presses against the rear positioning component 11, the display 2 shows a stop signal. After the vehicle stops, based on the height of the rear wheels, the lifting cylinder 103 pushes out the blocking component 104 to limit the rear wheels. The multi-stage hydraulic cylinder 132 then lifts the front end of the unloading platform 5, causing the rear wheels to press against the blocking component 104. At this time, the photoelectric sensor detects the width of the rear wheels, and the control module controls the locking cylinders 107 located on both sides of the wheels to push out the upper end of the locking rod 106. 06. Lock and secure the rear wheels of the vehicle on both sides. At the same time, the swing cylinder 47 located behind the front wheels of the vehicle performs a corresponding action, driving the barrier bar 43 to move upward. Simultaneously, the swing cylinder 47 drives the swing arm 45 to rotate, pressing the barrier bar 43 tightly against the rear of the front wheels of the vehicle. The barrier bar 43 effectively blocks the position of the front wheels of the vehicle, preventing the front of the vehicle from shifting during unloading, and distributing the weight of the vehicle to reduce the support strength of the rear barrier mechanism 10. The support cylinder 82 extends accordingly, driving the support plate 83 to move towards the conveying mechanism 9. The support plate 83 fills the gap between the unloading platform 5 and the conveying mechanism 9, preventing material from falling into the gap below the unloading platform 5. When the vehicle is unloading, the material falls from the grid plate 93 into the box 91, and is collected at the bottom of the box 91 by the action of the guide plates 92 on both sides. It is then pushed into the feeding pipe 95 by the conveying auger 97, completing the unloading operation of the vehicle.

[0022] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A through-type hydraulic unloading platform for bulk materials from trucks, comprising a support base (1), wherein an unloading platform (5) is rotatably connected to one top end of the support base (1), and both sides of the unloading platform (5) are equipped with barriers (6), characterized in that, A conveying mechanism (9) is fixedly installed at one end of the support base (1). A hydraulic lifting mechanism (13) is installed on both sides of the support base (1). The top of the hydraulic lifting mechanism (13) is fixedly connected to the bottom of the unloading platform (5). Two slots (12) that cooperate with the hydraulic lifting mechanism (13) are provided at the top of the support base (1). Two vertically distributed bottom grooves (16) are provided at the front end of the unloading platform (5). Multiple storage compartments are provided between the two bottom grooves (16). The top of the hydraulic lifting mechanism (13) is equipped with a front obstacle mechanism (4), and the top of the unloading platform (5) is equipped with multiple front positioning components (3) that are staggered with the storage slot (15). The unloading platform (5) has two rectangular mounting slots (14) at one end near the conveying mechanism (9), and each of the two rectangular mounting slots (14) is equipped with a retractable rear obstacle mechanism (10). The top of the unloading platform (5) is equipped with multiple rear positioning components (11).

2. The through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, A display (2) is installed at the front end of the unloading platform (5), and a camera is installed at the bottom of the display (2).

3. The through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, The conveying mechanism (9) includes a box (91) buried below the ground and two grid plates (93) fixedly installed on the top of the box (91). Baffle plates (94) are provided on both sides of the top of the grid plates (93). A conveying auger (97) is installed at the bottom of the box (91), and a drive motor (96) for driving the conveying auger (97) to rotate is installed on the side of the box (91). A feeding pipe (95) is installed at one end of the conveying auger (97), and two guide plates (92) with a V-shaped structure are installed on the inner wall of the box (91).

4. The through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, The hydraulic lifting mechanism (13) includes two hydraulic bases (131) fixedly installed on the side of the support base (1) and a lifting frame (133) fixedly installed on the bottom of the unloading platform (5). A gantry frame (134) is installed at both ends of the lifting frame (133). A multi-stage hydraulic cylinder (132) is installed between the gantry frame (134) and the hydraulic base (131).

5. A through-type hydraulic unloading platform for bulk materials from trucks according to claim 4, characterized in that, The hydraulic lifting mechanism (13) is also connected to a hydraulic control system, which includes: The displacement detection module is installed on the multi-stage hydraulic cylinder (132) and is used to detect the extension and retraction distance of the multi-stage hydraulic cylinder (132). The regulating module consists of an electro-hydraulic proportional directional valve connected to a multi-stage hydraulic cylinder (132), which provides an independent and precisely adjustable flow supply to each multi-stage hydraulic cylinder (132). The control module reads the signal from the displacement detection module for comprehensive analysis, controls each adjustment module to adjust the flow rate into / out of each multi-stage hydraulic cylinder (132), and drives the multi-stage hydraulic cylinder (132) to move synchronously.

6. The through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, The front obstacle mechanism (4) includes a fixed back plate (41) installed between the gantry frame (134) and the unloading platform (5), and a fixed cover plate (42) installed on the outer side of the fixed plate (41). A plurality of vertically distributed swing arms (45) are provided between the fixed back plate (41) and the fixed cover plate (42). Vertical hydraulic cylinders (46) are installed on the side of the swing arms (45). The front obstacle mechanism (4) also includes an obstacle rod (43) installed inside the storage slot (15). The two ends of the obstacle rod (43) are slidably connected to the bottom of the swing arm (45). The top of the two ends of the obstacle rod (43) are fixedly connected to the corresponding vertical hydraulic cylinders (46) on both sides. Anti-slip parts (44) are provided on both sides of the top of the obstacle rod (43).

7. A through-type hydraulic unloading platform for bulk materials from trucks according to claim 6, characterized in that, Multiple pins are installed between the fixed back plate (41) and the fixed cover plate (42), and the top of the swing arm (45) is rotatably installed on the outside of the pins. A swing cylinder (47) is hinged between the other side of the swing arm (45) and the fixed back plate (41).

8. A through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, The rear obstacle mechanism (10) includes a main frame (101) installed above the unloading platform (5) and a limiting bracket (102) installed below the unloading platform (5). A blocking member (104) is slidably installed between the main frame (101) and the limiting bracket (102). A lifting cylinder (103) that drives the blocking member (104) to extend and retract is installed in the middle of the limiting bracket (102).

9. A through-type hydraulic unloading platform for bulk materials from trucks according to claim 8, characterized in that, The blocking member (104) has an L-shaped structure, and a plurality of L-shaped movable grooves (105) are provided on one side of the top of the blocking member (104). An L-shaped locking rod (106) is rotatably installed inside the movable groove (105). A locking cylinder (107) is hinged between the end of the locking rod (106) and the blocking member (104). A plurality of photoelectric sensors are also installed on the front side of the blocking member (104) at intervals from the locking rod (106).

10. A through-type hydraulic unloading platform for bulk materials from trucks according to claim 1, characterized in that, The rear end of the unloading platform (5) is provided with a bracket part (7), and a support plate mechanism (8) is installed inside the bracket part (7). The support plate mechanism (8) includes two limiting slide grooves (81) provided at the ends of the bracket part (7) and a limiting slide rod (84) slidably installed between the two limiting slide grooves (81). A support plate (83) is installed on the outside of the limiting slide rod (84), and a support cylinder (82) is hinged between the bottom of the support plate (83) and the bracket part (7).

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