Unloading device for road freight transportation

Abstract

The invention discloses an unloading device for road freight transportation, which belongs to the technical direction of freight unloading and comprises an unloading truck, four groups of first damping seats are fixedly mounted on the periphery of the bottom of the unloading truck, a first air compressor is detachably mounted on one side of the unloading truck, and a second air compressor is detachably mounted on the other side of the unloading truck. Through cooperative use of the two sets of air compressors, the four sets of hydraulic lifting rods and equipment programs, the lifting value can be changed according to different heights of the unloaded vehicles, so that the unloading box is moved to the corresponding position, workers can conveniently unload and carry the unloading box, and the working efficiency is improved. Goods are prevented from falling to the ground to be damaged in the unloading process, loss in the unloading process is reduced, the cost expenditure of a factory is reduced, protection modes can be changed according to different weights of the goods through cooperative use of a protection air cushion, a fourth air compressor, a pressure sensor and an equipment program, when the goods are light, the air cushion does not need to be used for protection, and safety is improved. And the energy consumption in the unloading process is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of freight unloading, and specifically relates to an unloading device for road freight transportation. Background Art

[0002] Road freight transport includes general road freight, special road freight transport, large-object road transport and dangerous goods road transport. It is a production activity that uses trucks as the main means of transport to cause spatial displacement of goods through roads. Due to the strong adaptability, mobility and flexibility of automobile transport, and rapid delivery, cargo can be loaded and unloaded at fixed stations, ports, and docks, as well as on-site loading and unloading in streets, farmers' markets, towns and villages, thus realizing "door-to-door" direct transportation. Therefore, in many cases, it is more convenient than other modes of transport and can better meet user needs.

[0003] The existing patent publication number CN 219620143 U discloses a new type of loading and unloading equipment for transportation, including a No. 1 support frame and a No. 2 support frame, wherein the corresponding ends of the No. 1 support frame and the No. 2 support frame are jointly equipped with a conveying device, and the lower ends of the No. 1 support frame and the No. 2 support frame are jointly equipped with two adjusting devices, a No. 1 fixing plate is installed at one end of the No. 1 support frame, and a No. 2 fixing plate is installed at one end of the No. 2 support frame, and a sliding pushing device is jointly installed at the corresponding ends of the No. 1 fixing plate and the No. 2 fixing plate, and also includes an auxiliary device arranged between the No. 1 support frame, the No. 2 support frame, the No. 1 fixing plate, and the No. 2 fixing plate for preventing the goods from being easily affected by rainy weather when being loaded or unloaded by the conveying device and the sliding pushing device, which only plays a rainproof role during the unloading process and cannot improve the unloading efficiency, and needs some improvements.

[0004] Therefore, it is necessary to design a kind of unloading device for road freight transportation with strong practicality. Summary of the invention

[0005] The purpose of the present invention is to provide a road freight transport unloading device for existing devices to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a cargo unloading device for road freight transport, comprising a cargo unloading truck, four groups of moving wheels are fixedly installed around the bottom of the cargo unloading truck, four groups of first shock-absorbing seats are also fixedly installed around the bottom of the cargo unloading truck, a first air compressor is detachably installed on one side of the cargo unloading truck, a second air compressor is detachably installed on the other side of the cargo unloading truck, two groups of cameras are fixedly installed at both ends of the cargo unloading truck, and a cargo unloading component and a protective component are also provided on the cargo unloading truck; The unloading assembly includes an unloading box, a mounting platform, a first hydraulic lifting rod, a second hydraulic lifting rod, a cleaning water tank, a water injection pipe, a water delivery pipe, a cleaning nozzle, an electric valve, a third air compressor, a fourth air compressor, an air intake pipe, a first mounting seat, a first hydraulic telescopic rod, a second mounting seat, a second hydraulic telescopic rod, and a first fixed plate. Two groups of the first hydraulic lifting rods are fixedly installed on one side of the body of the unloading truck, and two groups of the second hydraulic lifting rods are fixedly installed on the other side of the body of the unloading truck. The unloading box can be detachably installed at the ends of four groups of hydraulic lifting rods, and the four groups of hydraulic lifting rods are located around the body of the unloading truck. The mounting platform is fixedly installed at one end of the unloading box, and the cleaning water tank is fixedly installed at one end of the mounting platform. The water injection pipe is arranged on the cleaning water tank, and the cleaning nozzle is detachably installed at one end inside the unloading box. One end of the water delivery pipe is connected to the cleaning water tank, and the other end is connected to the cleaning nozzle. The electric valve is arranged inside the water delivery pipe.

[0007] The present invention further illustrates that the third air compressor and the fourth air compressor are installed at intervals on the other end of the mounting platform, the air intake pipe is arranged at one end of the unloading box, the air intake pipe is connected to the built-in ventilation pipeline of the unloading box, the first mounting seat is fixedly installed on one side of the unloading box, one end of the first hydraulic telescopic rod is connected to the mounting platform, and the other end passes through the first mounting seat and extends to the inside of the unloading box, the second mounting seat is fixedly installed on the other side of the unloading box, one end of the second hydraulic telescopic rod is connected to the mounting platform, and the other end passes through the second mounting seat and extends to the inside of the unloading box, and the first fixing plate is detachably installed at the end of the two groups of hydraulic telescopic rods.

[0008] The present invention further illustrates that the protection component includes a first electric slide rail, a first movable seat, a third hydraulic telescopic rod, a second fixed plate, a first protective gasket, a second electric slide rail, a second movable seat, a fourth hydraulic telescopic rod, a third fixed plate, a second protective gasket, a placement plate, a protective air cushion, a second shock-absorbing seat, and a pressure sensor. Two groups of the first electric slide rails are arranged on one side of the interior of the unloading box, two groups of the first movable seats are slidably connected to the two groups of first electric slide rails, three groups of the third hydraulic telescopic rods are installed at intervals on the first movable seat, the second fixed plate is detachably installed on the three groups of third hydraulic telescopic rods, the first protective gasket is fixedly installed on the second fixed plate, and the structures of the two groups of the first movable seats are the same.

[0009] The present invention further illustrates that two groups of the second moving seats are arranged on the other side of the interior of the unloading box, the two groups of the second moving seats are slidably connected to the two groups of second electric slide rails, the three groups of the fourth hydraulic telescopic rods are installed at intervals on the second moving seats, the third fixed plate is detachably installed on the three groups of fourth hydraulic telescopic rods, the second protective gasket is fixedly installed on the third fixed plate, and the structures of the two groups of the second moving seats are the same.

[0010] The present invention further illustrates that the four groups of the second shock-absorbing seats can be removably installed on the four sides of the interior of the unloading box, the placement plate can be removably installed on the four groups of the second shock-absorbing seats, the protective air cushion is arranged on the placement plate, the protective air cushion is connected to the built-in ventilation pipeline of the unloading box, and the four groups of the pressure sensors are fixedly installed on the bottom of the four groups of the second shock-absorbing seats.

[0011] The present invention further illustrates that the first air compressor is externally connected to a ventilation hose connected to a first hydraulic lifting rod, the second air compressor is externally connected to a ventilation hose connected to a second hydraulic lifting rod, and the third air compressor is externally connected to a ventilation hose connected to a water pipe.

[0012] The present invention further illustrates that the fourth air compressor is connected to the built-in ventilation pipeline of the unloading box through an external ventilation hose, and the built-in ventilation pipeline of the unloading box is connected to the first hydraulic telescopic rod, the second hydraulic telescopic rod, the third hydraulic telescopic rod, the fourth hydraulic telescopic rod and the protective air cushion through an external ventilation hose.

[0013] The present invention further illustrates that the unloading truck is placed on the floor of a production workshop, and a ventilation pipeline is built into the box body of the unloading box.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, through the coordinated use of two groups of air compressors, four groups of hydraulic lifting rods and equipment programs, can change the lifting value according to the height of the unloading vehicle, so that the unloading box can be moved to the corresponding position, which is convenient for the staff to unload and carry the goods, and prevent the goods from falling to the ground and being damaged during the unloading process, thereby reducing the loss during the unloading process and reducing the cost expenditure of the factory. Through the coordinated use of the protective air cushion, the fourth air compressor, the pressure sensor and the equipment program, the protection mode can be changed according to the weight of the goods. When the weight of the goods is light, there is no need to use the air cushion protection, which reduces the energy consumption during the unloading process. Only the second shock-absorbing seat is used for buffering protection to prevent the goods from colliding with the unloading box and causing damage. When the weight of the goods is heavy, the air cushion is used for protection to prevent the staff from throwing the goods randomly during the unloading process and causing damage. At the same time, the goods can be prevented from directly contacting the unloading box, reducing the friction during subsequent unloading, reducing the time required for unloading, and improving the unloading efficiency. Through the coordinated use of four sets of hydraulic telescopic rods, cameras and equipment programs, the inflation volume of the protective air cushion can be changed according to the different heights of the conveyor belt during unloading, thereby changing the height of the goods so that they are located above the workshop conveyor belt, which is convenient for subsequent unloading and transportation operations, and does not require manual handling. The four sets of hydraulic telescopic rods are used to clamp and fix the goods and then push them out in a centralized manner to avoid collisions and damage during unloading. It can also prevent the goods from directly contacting the inner wall of the unloading box to cause scratches, reduce the cost of daily maintenance of the unloading box, and increase the service life; Through the coordinated use of the third air compressor, electric valve and equipment program, the inside of the unloading box can be automatically cleaned after unloading is completed to prevent the dirt and dust on the surface of the goods from accumulating inside the unloading box and affecting subsequent transportation. It can also prevent the dirt and dust from being contaminated on the surface of subsequent goods and affecting the storage environment of the workshop. After cleaning, the air drying operation can be automatically performed to avoid residual humid gas inside the unloading box, thereby increasing the service life of the unloading box and preventing the goods from getting damp. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is another perspective overall structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the internal structure of the unloading box of the present invention; Figure 4 is a schematic diagram of the internal structure of the unloading box from another perspective of the present invention; Figure 5 The present invention Figure 3 A magnified schematic diagram of the structure in area A; Figure 6 The present invention Figure 3 A magnified schematic diagram of the structure in area B; Figure 7 The present invention Figure 4 A magnified schematic diagram of the structure in area C; Figure 8 The present invention Figure 4 A magnified schematic diagram of the structure in area D; Fig. 9 It is a schematic diagram of the placement plate structure of the present invention; Fig.10 is a schematic diagram of the placement plate structure from another perspective of the present invention; Fig.11 It is a schematic diagram of the position of the electric valve of the present invention.

[0016] In the figure: 1, unloading truck; 11, moving wheel; 12, first shock absorber; 13, first air compressor; 14, second air compressor; 15, camera; 2. Unloading assembly; 21. Unloading box; 211. Mounting platform; 212. First hydraulic lifting rod; 213. Second hydraulic lifting rod; 22. Cleaning water tank; 221. Water injection pipe; 222. Water delivery pipe; 223. Cleaning nozzle; 224. Electric valve; 23. Third air compressor; 24. Fourth air compressor; 241. Air intake pipe; 25. First mounting seat; 251. First hydraulic telescopic rod; 26. Second mounting seat; 261. Second hydraulic telescopic rod; 27. First fixing plate; 3. Protection assembly; 31. First electric slide rail; 32. First moving seat; 321. Third hydraulic telescopic rod; 322. Second fixed plate; 323. First protection gasket; 33. Second electric slide rail; 34. Second moving seat; 341. Fourth hydraulic telescopic rod; 342. Third fixed plate; 343. Second protection gasket; 35. Placement plate; 351. Protection air cushion; 352. Second shock-absorbing seat; 353. Pressure sensor. DETAILED DESCRIPTION

[0017] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-11 The present invention provides a technical solution: a cargo unloading device for road freight transport, comprising a cargo unloading truck 1, the cargo unloading truck 1 is placed on the floor of a production workshop, four groups of moving wheels 11 are fixedly installed around the bottom of the cargo unloading truck 1 for coordinated movement, four groups of first shock-absorbing seats 12 are also fixedly installed around the bottom of the cargo unloading truck 1 for fixed operation of the cargo unloading truck 1 during loading and unloading, a first air compressor 13 is detachably installed on one side of the cargo unloading truck 1, a second air compressor 14 is detachably installed on the other side of the cargo unloading truck 1, two groups of cameras 15 are respectively fixedly installed at both ends of the cargo unloading truck 1 for coordinated detection of the position of the subsequent conveyor belt and the size of the cargo, and a cargo unloading component 2 and a protective component 3 are also provided on the cargo unloading truck 1; The unloading assembly 2 includes an unloading box 21, a mounting platform 211, a first hydraulic lifting rod 212, a second hydraulic lifting rod 213, a cleaning water tank 22, a water injection pipe 221, a water delivery pipe 222, a cleaning nozzle 223, an electric valve 224, a third air compressor 23, a fourth air compressor 24, an air intake pipe 241, a first mounting seat 25, a first hydraulic telescopic rod 251, a second mounting seat 26, a second hydraulic telescopic rod 261, and a first fixing plate 27. Two sets of first hydraulic lifting rods 212 are fixedly mounted on one side of the body of the unloading truck 1, and two sets of second hydraulic lifting rods 213 are fixedly mounted on the On the other side of the vehicle body, the unloading box 21 is detachably mounted on the ends of four sets of hydraulic lifting rods, and the four sets of hydraulic lifting rods are located around the body of the unloading truck 1. The mounting platform 211 is fixedly mounted on one end of the unloading box 21, and the cleaning water tank 22 is fixedly mounted on one end of the mounting platform 211. The water injection pipe 221 is arranged on the cleaning water tank 22 for injecting cleaning liquid. The cleaning nozzle 223 is detachably mounted on one end of the interior of the unloading box 21. One end of the water pipe 222 is connected to the cleaning water tank 22, and the other end is connected to the cleaning nozzle 223. The electric valve 224 is arranged inside the water pipe 222 for cooperating to control the circulation of water. A ventilation pipeline is built into the unloading box 21 (not shown in the figure); The third air compressor 23 and the fourth air compressor 24 are installed at the other end of the mounting platform 211 at intervals, the air inlet pipe 241 is arranged at one end of the unloading box 21, and the air inlet pipe 241 is connected to the built-in ventilation pipeline of the unloading box 21, the first mounting seat 25 is fixedly installed on one side of the unloading box 21, one end of the first hydraulic telescopic rod 251 is connected to the mounting platform 211, and the other end passes through the first mounting seat 25 and extends to the inside of the unloading box 21, the second mounting seat 26 is fixedly installed on the other side of the unloading box 21, one end of the second hydraulic telescopic rod 261 is connected to the mounting platform 211, and the other end passes through the second mounting seat 26 and extends to the inside of the unloading box 21, and the first fixed plate 27 is detachably installed at the ends of the two sets of hydraulic telescopic rods for cooperating in the unloading operation; The protection assembly 3 includes a first electric slide rail 31, a first moving seat 32, a third hydraulic telescopic rod 321, a second fixed plate 322, a first protective gasket 323, a second electric slide rail 33, a second moving seat 34, a fourth hydraulic telescopic rod 341, a third fixed plate 342, a second protective gasket 343, a placement plate 35, a protective air cushion 351, a second shock-absorbing seat 352, and a pressure sensor 353. Two groups of first electric slide rails 31 are arranged on one side of the interior of the unloading box 21 for coordinated movement. Two groups of first moving seats 32 are slidably connected to the two groups of first electric slide rails 31. Three groups of third hydraulic telescopic rods 321 are installed at intervals on the first moving seat 32. The second fixed plate 322 is detachably installed on the three groups of third hydraulic telescopic rods 321. The first protective gasket 323 is fixedly installed on the second fixed plate 322 for protecting goods and preventing damage caused by squeezing the goods and the inner wall of the unloading box 21. The structures of the two groups of first moving seats 32 are the same. Two groups of second moving seats 34 are arranged at the other side of the interior of the unloading box 21 for coordinated movement. The two groups of second moving seats 34 are slidably connected to the two groups of second electric slide rails 33. Three groups of fourth hydraulic telescopic rods 341 are installed at intervals on the second moving seats 34. The third fixed plate 342 is detachably installed on the three groups of fourth hydraulic telescopic rods 341. The second protective gasket 343 is fixedly installed on the third fixed plate 342 for protecting the goods and preventing the goods from being squeezed by the inner wall of the unloading box 21 and causing damage. The structures of the two groups of second moving seats 34 are the same. Four sets of second shock-absorbing seats 352 are detachably mounted on the four sides of the interior of the unloading box 21, and the placement plate 35 is detachably mounted on the four sets of second shock-absorbing seats 352. The protective air cushion 351 is arranged on the placement plate 35 to protect the goods and prevent damage caused by collision during the unloading process. The protective air cushion 351 is connected to the built-in ventilation pipeline of the unloading box 21. Four sets of pressure sensors 353 are fixedly mounted on the bottom of the four sets of second shock-absorbing seats 352 to cooperate in detecting the weight of the goods. The first air compressor 13 is externally connected to a ventilation hose connected to the first hydraulic lifting rod 212, the second air compressor 14 is externally connected to a ventilation hose connected to the second hydraulic lifting rod 213, and the third air compressor 23 is externally connected to a ventilation hose connected to the water pipe 222; The fourth air compressor 24 is connected to the built-in ventilation pipeline of the unloading box 21 through an external ventilation hose, and the built-in ventilation pipeline of the unloading box 21 is connected to the first hydraulic telescopic rod 251, the second hydraulic telescopic rod 261, the third hydraulic telescopic rod 321, the fourth hydraulic telescopic rod 341, and the protective air cushion 351 through an external ventilation hose (not shown in the figure); Unloading truck 1 provides power to drive internal components through an external workshop power supply; The unloading truck 1 is also equipped with an equipment program, which can control the start and stop of four sets of air compressors, the operation of two sets of electric slide rails, and the opening and closing of the electric valve 224.

[0019] Unloading operation: When the staff needs to unload the goods in the unloading workshop, the staff first uses the transfer tool to push the unloading truck 1 into the workshop, and then the staff uses the tool to lower the four sets of first shock-absorbing seats 12 to make them fit to the ground, fix the unloading truck 1, and then the staff turns on the power of the workshop. At this time, the unloading truck 1 starts, the equipment program starts, and the equipment program detects the position of the goods through the camera 15 and compares it with the set value. The equipment program sets the pump air pressure to H0, H1, H2, and H3, H0 is the initial value, H1 is the minimum value, and H3 is the maximum value, which can be adjusted according to specific needs. When the equipment program detects that the cargo position is low, the equipment program controls the first air compressor 13 and the second air compressor 14 to start, and the pump air pressure of the two sets of air compressors is H1. The two sets of air compressors pump compressed air into the four sets of hydraulic lifting rods, and the four sets of hydraulic lifting rods extend upward to the minimum value and drive the unloading box 21 moves upward, shortening the distance between the unloading box 21 and the goods, making it easier for the staff to carry out unloading operations. When the equipment program detects that the position of the goods has risen, the equipment program controls the pumping pressure of the first air compressor 13 and the second air compressor 14 to be adjusted to H2. The two groups of air compressors increase the pumping amount and pumping pressure of compressed air, so that the four groups of hydraulic lifting rods extend upward and drive the unloading box 21 to move upward, shortening the distance between the unloading box 21 and the goods, making it easier for the staff to carry out unloading operations. When the equipment program detects that the position of the goods is high, the equipment program controls the pumping pressure of the first air compressor 13 and the second air compressor 14 to be adjusted to H3. The two groups of air compressors increase the pumping amount and pumping pressure of compressed air, so that the four groups of hydraulic lifting rods extend upward to the maximum value and drive the unloading box 21 to move upward, shortening the distance between the unloading box 21 and the goods, making it easier for the staff to carry out unloading operations. After completing the above operations, the staff uses tools to move the goods to the placement plate 35 in the unloading box 21 for unloading operations. During the unloading process, the equipment program detects the weight of the goods through four groups of pressure sensors 353 and compares it with the set value. The equipment program sets the pressure values ​​to X1, X2, and X3, X1 is the minimum value, and X3 is the maximum value, which can be adjusted according to specific needs. The air cushion pump pressure is Y1 and Y2, Y1 is the minimum value, and Y2 is the maximum value, which can be adjusted according to specific needs. When the equipment program detects that the pressure value is X1, the equipment program determines that the weight of the goods is light and there is no need to perform inflation protection operations. Only the second shock absorber seat 352 is used for buffering protection. When the equipment program detects that the pressure value is X2, the equipment program determines that the weight of the goods has increased and needs to be protected. The equipment program controls the fourth air compressor 24 to start. The pump air pressure is Y1, and the fourth air compressor 24 pumps compressed air into the protective air cushion 351 through the built-in ventilation pipeline of the unloading box 21, so that the protective air cushion 351 expands, and prevents the goods from directly contacting the placement plate 35 and causing damage by collision. At the same time, it can also reduce the friction between the goods and the placement plate 35 during subsequent unloading, thereby improving the unloading efficiency. When the equipment program detects that the pressure value is X3, the equipment program determines that the weight of the goods is large and needs to be protected. The equipment program controls the fourth air compressor 24 to start, and the pump air pressure is Y2. The fourth air compressor 24 pumps compressed air into the protective air cushion 351 through the built-in ventilation pipeline of the unloading box 21, so that the protective air cushion 351 expands to the maximum, and prevents the goods from directly contacting the placement plate 35 and causing damage by collision. At the same time, it can also reduce the friction between the goods and the placement plate 35 during subsequent unloading, thereby improving the unloading efficiency. Through the coordinated use of two sets of air compressors, four sets of hydraulic lifting rods and equipment programs, the lifting value can be changed according to the height of the unloading vehicle, so that the unloading box 21 can be moved to the corresponding position, which is convenient for the staff to unload and carry the goods, prevent the goods from falling to the ground and being damaged during the unloading process, reduce the loss during the unloading process, and reduce the cost expenditure of the factory. Through the coordinated use of the protective air cushion 351, the fourth air compressor 24, the pressure sensor 353 and the equipment program, the protection method can be changed according to the weight of the goods. When the weight of the goods is light, there is no need to use air cushion protection, which reduces the energy consumption during the unloading process. Only the second shock absorber seat 352 is used for buffering protection to prevent the goods from colliding with the unloading box 21 and being damaged. When the weight of the goods is heavy, the air cushion is used for protection to prevent the staff from throwing it around during the unloading process and causing damage. At the same time, it can avoid direct contact between the goods and the unloading box 21, reduce the friction during subsequent unloading, reduce the time required for unloading, and improve the unloading efficiency.

[0020] Transport Operations: After completing the above operations, the staff needs to transport the unloaded goods of this batch to the workshop. Then the staff controls the first air compressor 13 and the second air compressor 14 to start through the equipment program. The two sets of air compressors adjust the pump air pressure to H0. The four sets of hydraulic lifting rods drive the unloading box 21 to move downward. Then the equipment program detects the position of the conveyor belt in the workshop through the camera 15, and adjusts the air cushion pump air pressure according to the set value. The equipment program sets the height values ​​to A1, A2, and A3. A1 is the minimum value and A3 is the maximum value. It can be adjusted according to specific needs. When the equipment program detects that the height of the conveyor belt in the workshop is A1, the equipment program determines that the position of the subsequent conveying component is low and no lifting operation is required. At this time, the equipment program controls the fourth air compressor 24 to pump compressed air into the third hydraulic telescopic rod 321 and the fourth hydraulic telescopic rod 341 through the built-in ventilation pipeline of the unloading box 21. The third hydraulic telescopic rod 321 and the fourth hydraulic telescopic rod 341 drive the second fixed plate 322 and the third fixed plate 3 42 extends outward, the second fixed plate 322 and the third fixed plate 342 clamp the goods to each other to avoid dumping during subsequent unloading and conveying operations. The two sets of protective gaskets can prevent the two sets of fixed plates from damaging the goods and can also play a buffering role. Then the equipment program controls the fourth air compressor 24 to pump compressed air into the first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 through the built-in ventilation pipeline of the unloading box 21. The first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 extend outward and drive the first fixed plate 27 to move outward. The first fixed plate 27 pushes the goods outward. In the process of pushing the goods out, the two sets of moving seats move outward along the two sets of electric slide rails, and cooperate with the first fixed plate 27 to bring the goods out to the top of the workshop conveyor belt. Then the equipment program controls the fourth air compressor 24 to stop pumping air, so that the four sets of hydraulic telescopic rods retract inward, and then the goods will fall on the workshop conveyor belt for subsequent transportation; When the equipment program detects that the height of the conveyor belt in the workshop is A2, the equipment program determines that the position of the subsequent conveying component has become higher and needs to be raised. At this time, the equipment program controls the fourth air compressor 24 to pump compressed air into the protective air cushion 351, the third hydraulic telescopic rod 321, and the fourth hydraulic telescopic rod 341 through the built-in ventilation pipeline of the unloading box 21. The pumping air pressure is Y1, and the protective air cushion 351 is pushed upward to raise the position of the goods to above the conveyor belt in the workshop. The third hydraulic telescopic rod 321 and the fourth hydraulic telescopic rod 341 drive the second fixed plate 322 and the third fixed plate 342 to extend outward. The second fixed plate 322 and the third fixed plate 342 clamp the goods to each other to avoid tipping over during subsequent unloading and conveying operations. The two sets of protective gaskets can It is enough to prevent the two sets of fixed plates from damaging the goods and can also play a buffering role. Then the equipment program controls the fourth air compressor 24 to pump compressed air into the first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 through the built-in ventilation pipeline of the unloading box 21. The first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 extend outward and drive the first fixed plate 27 to move outward. The first fixed plate 27 pushes the goods outward. In the process of pushing the goods out, the two sets of moving seats move outward along the two sets of electric slide rails and cooperate with the first fixed plate 27 to bring the goods out to the top of the workshop conveyor belt. Then the equipment program controls the fourth air compressor 24 to stop pumping air, so that the four sets of hydraulic telescopic rods retract inward, and then the goods will fall on the workshop conveyor belt for subsequent transportation; When the equipment program detects that the height of the conveyor belt in the workshop is A3, the equipment program determines that the position of the subsequent conveying component is high and needs to be raised. At this time, the equipment program controls the fourth air compressor 24 to pump compressed air into the protective air cushion 351, the third hydraulic telescopic rod 321, and the fourth hydraulic telescopic rod 341 through the built-in ventilation pipeline of the unloading box 21. The pumping air pressure is Y2, and the protective air cushion 351 is pushed up to raise the position of the goods to above the conveyor belt in the workshop. The third hydraulic telescopic rod 321 and the fourth hydraulic telescopic rod 341 drive the second fixed plate 322 and the third fixed plate 342 to extend outward, and the second fixed plate 322 and the third fixed plate 342 clamp the goods to each other to avoid tipping during subsequent unloading and conveying operations. The two sets of protective gaskets can To prevent the two sets of fixed plates from damaging the goods, and to play a buffering role at the same time, the equipment program controls the fourth air compressor 24 to pump compressed air into the first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 through the built-in ventilation pipeline of the unloading box 21. The first hydraulic telescopic rod 251 and the second hydraulic telescopic rod 261 extend outward and drive the first fixed plate 27 to move outward, and the first fixed plate 27 pushes the goods outward. In the process of pushing the goods out, the two sets of moving seats move outward along the two sets of electric slide rails, and cooperate with the first fixed plate 27 to bring the goods out to the top of the workshop conveyor belt. Then the equipment program controls the fourth air compressor 24 to stop pumping air, so that the four sets of hydraulic telescopic rods retract inward, and then the goods will fall on the workshop conveyor belt for subsequent transportation; Through the coordinated use of four sets of hydraulic telescopic rods, the camera 15 and the equipment program, the inflation volume of the protective air cushion 351 can be changed according to the different heights of the conveyor belt during unloading, thereby changing the height of the goods so that they are located above the workshop conveyor belt, which is convenient for subsequent unloading and transportation operations, and does not require manual handling. The four sets of hydraulic telescopic rods are used to clamp and fix the goods and then push them out in a concentrated manner to avoid damage caused by collisions between the goods during the unloading process, and to prevent scratches caused by direct contact between the goods and the inner wall of the unloading box 21, thereby reducing the cost of daily maintenance of the unloading box 21 and increasing its service life.

[0021] Cleanup operations: After the unloading operation is completed, the equipment program controls the cleaning operation. The equipment program sets the cleaning time to T1. The equipment program first controls the electric valve 224 to open and the third air compressor 23 to open. The cleaning water tank 22 inputs the cleaning liquid into the water pipe 222. The third air compressor 23 pumps compressed air into the water pipe 222. Then, the cleaning liquid is sprayed obliquely downward from the cleaning nozzle 223 to the surface of the protective air cushion 351 and the placement plate 35 in the form of water mist to clean them. When the cleaning time reaches T1, the equipment program controls the electric valve 224 to close, the third air compressor 23 pumps compressed air into the water pipe 222, and then sprays obliquely downward from the cleaning nozzle 223 to the surface of the protective air cushion 351 and the placement plate 35 to air-dry them. When the air-drying time reaches T1, the equipment program controls the third air compressor 23 to close and sends a completion signal to the staff; Through the coordinated use of the third air compressor 23, the electric valve 224 and the equipment program, the inside of the unloading box 21 can be automatically cleaned after unloading is completed, to prevent the dirt and dust on the surface of the goods from accumulating inside the unloading box 21 and affecting subsequent transportation, and to prevent the dirt and dust from being contaminated on the surface of subsequent goods and affecting the storage environment of the workshop. After cleaning, the air-drying operation can be automatically performed to avoid the residual humid gas in the unloading box 21, thereby increasing the service life of the unloading box 21 and preventing the goods from getting damp.

[0022] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cargo unloading device for road freight transport, comprising a cargo unloading truck (1), characterized in that: Four groups of moving wheels (11) are fixedly mounted around the bottom of the unloading truck (1), four groups of first shock-absorbing seats (12) are also fixedly mounted around the bottom of the unloading truck (1), a first air compressor (13) is detachably mounted on one side of the unloading truck (1), and a second air compressor (14) is detachably mounted on the other side of the unloading truck (1), two groups of cameras (15) are respectively fixedly mounted at both ends of the unloading truck (1), and the unloading truck (1) is also provided with an unloading component (2) and a protection component (3); The unloading assembly (2) comprises an unloading box (21), a mounting platform (211), a first hydraulic lifting rod (212), a second hydraulic lifting rod (213), a cleaning water tank (22), a water injection pipe (221), a water delivery pipe (222), a cleaning nozzle (223), an electric valve (224), a third air compressor (23), a fourth air compressor (24), an air intake pipe (241), a first mounting seat (25), a first hydraulic telescopic rod (251), a second mounting seat (26), a second hydraulic telescopic rod (261), and a first fixing plate (27). Two groups of the first hydraulic lifting rods (212) are fixedly mounted on one side of the body of the unloading truck (1), and two groups of the second hydraulic lifting rods (213) are fixedly mounted on one side of the body of the unloading truck (1). The unloading box (21) is fixedly mounted on the other side of the body of the unloading truck (1); the unloading box (21) is detachably mounted on the ends of four sets of hydraulic lifting rods; the four sets of hydraulic lifting rods are located around the body of the unloading truck (1); the mounting platform (211) is fixedly mounted on one end of the unloading box (21); the cleaning water tank (22) is fixedly mounted on one end of the mounting platform (211); the water injection pipe (221) is arranged on the cleaning water tank (22); the cleaning nozzle (223) is detachably mounted on one end inside the unloading box (21); one end of the water delivery pipe (222) is connected to the cleaning water tank (22); the other end is connected to the cleaning nozzle (223); and the electric valve (224) is arranged inside the water delivery pipe (222).

2. A cargo unloading device for road freight transport according to claim 1, characterized in that: The third air compressor (23) and the fourth air compressor (24) are installed at the other end of the mounting platform (211) at intervals; the air intake pipe (241) is arranged at one end of the unloading box (21); the air intake pipe (241) is connected to a built-in ventilation pipeline of the unloading box (21); the first mounting seat (25) is fixedly installed on one side of the unloading box (21); one end of the first hydraulic telescopic rod (251) is connected to the mounting platform (211); the other end passes through the first mounting seat (25) and extends to the inside of the unloading box (21); the second mounting seat (26) is fixedly installed on the other side of the unloading box (21); one end of the second hydraulic telescopic rod (261) is connected to the mounting platform (211); the other end passes through the second mounting seat (26) and extends to the inside of the unloading box (21); and the first fixing plate (27) is detachably installed at the ends of the two sets of hydraulic telescopic rods.

3. A road freight transport unloading device according to claim 2, characterized in that: The protection assembly (3) comprises a first electric slide rail (31), a first moving seat (32), a third hydraulic telescopic rod (321), a second fixed plate (322), a first protection gasket (323), a second electric slide rail (33), a second moving seat (34), a fourth hydraulic telescopic rod (341), a third fixed plate (342), a second protection gasket (343), a placement plate (35), a protection air cushion (351), a second shock absorbing seat (352), and a pressure sensor (353). Two groups of the first electric slide rails (31) are arranged on one side of the interior of the unloading box (21); two groups of the first moving seats (32) are slidably connected to the two groups of the first electric slide rails (31); three groups of the third hydraulic telescopic rods (321) are installed on the first moving seat (32) at intervals; the second fixed plate (322) is detachably installed on the three groups of the third hydraulic telescopic rods (321); the first protection gasket (323) is fixedly installed on the second fixed plate (322); and the two groups of the first moving seats (32) have the same structure.

4. A road freight transport unloading device according to claim 3, characterized in that: Two groups of the second movable seats (34) are arranged on the other side of the interior of the unloading box (21); the two groups of the second movable seats (34) are slidably connected to the two groups of second electric slide rails (33); three groups of the fourth hydraulic telescopic rods (341) are installed at intervals on the second movable seats (34); the third fixed plate (342) is detachably installed on the three groups of fourth hydraulic telescopic rods (341); the second protective gasket (343) is fixedly installed on the third fixed plate (342); and the two groups of the second movable seats (34) have the same structure.

5. A road freight transport unloading device according to claim 4, characterized in that: The four groups of the second shock-absorbing seats (352) are respectively detachably mounted on the four sides of the interior of the unloading box (21); the placement plate (35) is detachably mounted on the four groups of the second shock-absorbing seats (352); the protective air cushion (351) is arranged on the placement plate (35); the protective air cushion (351) is connected to the built-in ventilation pipeline of the unloading box (21); and the four groups of the pressure sensors (353) are fixedly mounted on the bottom of the four groups of the second shock-absorbing seats (352).

6. A cargo unloading device for road freight transport according to claim 5, characterized in that: The first air compressor (13) is externally connected to a ventilation hose connected to a first hydraulic lifting rod (212), the second air compressor (14) is externally connected to a ventilation hose connected to a second hydraulic lifting rod (213), and the third air compressor (23) is externally connected to a ventilation hose connected to a water pipe (222).

7. A cargo unloading device for road freight transport according to claim 6, characterized in that: The fourth air compressor (24) is connected to a built-in ventilation pipeline of the unloading box (21) via an external ventilation hose, and the built-in ventilation pipeline of the unloading box (21) is connected to the first hydraulic telescopic rod (251), the second hydraulic telescopic rod (261), the third hydraulic telescopic rod (321), the fourth hydraulic telescopic rod (341), and the protective air cushion (351) via the external ventilation hose.

8. A cargo unloading device for road freight transport according to claim 7, characterized in that: The unloading truck (1) is placed on the floor of a production workshop, and a ventilation pipeline is built into the box body of the unloading box (21).

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