Logistics transportation loading lifting device and method

Abstract

The invention discloses a logistics transportation loading and lifting device and method, and relates to the technical field of logistics transportation, the logistics transportation loading and lifting device comprises a base, a top plate is fixedly mounted at the top of the base, a balancing weight is fixedly mounted at the top of the top plate, a support is fixedly mounted at the front part of the top plate, and a protection device is arranged on the left side of the support; a clamping device is arranged on the front portion of the support, a lubricating device is arranged on the top of the support, the protective device comprises a motor, a gear, a chain, an L-shaped rod, a sliding rail, a pulley, a protective plate and a first slope block, the pulley is driven to slide on the sliding rail through movement of the protective plate, and the protective plate extends out to stop people from approaching a dangerous area when goods are lifted. Potential safety accidents are avoided, it is ensured that goods cannot fall onto surrounding personnel, additional protection is provided, accidental injuries are avoided, and the situation that the personnel mistakenly enter a working area to cause the safety accidents is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics transportation, and in particular to a logistics transportation loading and lifting device and method. Background Art

[0002] Logistics transportation loading and lifting device is a kind of equipment used in warehousing, freight, logistics and other fields to assist in lifting goods from the ground or lower position to trucks, containers or other means of transportation. Its main function is to load or unload goods into the means of transportation safely and quickly.

[0003] The patent with the patent announcement number CN218595587U relates to the field of logistics and transportation technology, specifically a small loading and lifting device for loading logistics goods, including a base, a column installed in the base, a lifting frame for supporting the pallet connected to the inside of the column, and a storage mechanism installed inside the lifting frame. This patent uses the lifting frame in conjunction with the first motor and screw rod inside the column to achieve a smooth lifting of the lifting frame inside the column, and the user is not easy to contact the transmission area, which is safer and more stable. At the same time, when in use, the lifting rod can be rotated through the storage mechanism, and the lifting rod can be rotated out of the lifting rod storage slot and transferred to the bottom of the pallet, so as to achieve storage and lifting of pallets of different sizes, thereby improving applicability.

[0004] In the above patent, the lifting rod is rotated by the storage mechanism, and the lifting rod is rotated out of the lifting rod storage slot and rotated under the pallet, so that pallets of different sizes can be stored and lifted, which improves the applicability. However, it is difficult to protect the surrounding area when lifting goods, which may cause the goods to accidentally fall and injure the staff during lifting. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a logistics transportation loading and lifting device and method, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a logistics transportation loading and lifting device, comprising a base, a top plate is fixedly installed on the top of the base, a counterweight is fixedly installed on the top of the top plate, a bracket is fixedly installed on the front of the top plate, a protective device is arranged on the left side of the bracket, a clamping device is arranged on the front of the bracket, and a lubricating device is arranged on the top of the bracket; Among them, the protective device includes a motor, a gear, a chain, an L-shaped rod, a slide rail, a pulley, a guard plate and an inclined plane block 1. The motor is fixedly installed on the left side of the bracket, one gear is fixedly installed on the output end of the motor, and the other gear is rotatably installed at the bottom of the bracket. The two gears are connected through chain transmission, the L-shaped rod is fixedly installed on the left side of the chain, the slide rail is fixedly installed on the left side of the top plate, the pulley is rotatably installed on the top of the slide rail, the guard plate is rotatably installed on the left side of the pulley, and the inclined plane block 1 is fixedly installed on the right side of the guard plate. The chain rotates and drives the L-shaped rod to start moving. The movement of the L-shaped rod pushes the inclined plane block to start moving. The movement of the inclined plane block drives the guard plate to start moving. The movement of the guard plate drives the pulley to slide on the slide rail.

[0007] According to the above technical solution, the gear is meshed with the chain, the pulley is in contact with the slide rail, and the side of the L-shaped rod and the inclined plane block one that is close to each other is set as an inclined plane. The meshing ensures that the gear can drive the chain to rotate when it rotates, and the contact pulley can rotate above the slide rail. The setting of the inclined plane ensures that the L-shaped rod can push the inclined plane block one while moving.

[0008] According to the above technical scheme, the clamping device includes a fixed rod, a baffle, a tooth, a push plate, a ramp block 2, an elastic telescopic rod and a push rod, the fixed rod is fixedly installed on the front part of the chain, the baffle is fixedly installed on the top of the fixed rod, the tooth is fixedly installed on the front part of the fixed rod, the push plate is slidably installed in the front part of the baffle, the ramp block 2 is fixedly installed on the left side of the push plate, the elastic telescopic rod is fixedly installed in the front part of the guard plate, and the push rod is fixedly installed on the movable end of the elastic telescopic rod, and the fixed rod is driven to move while the chain rotates, and the movement of the fixed rod drives the baffle and the tooth to move, and the movement of the tooth lifts the cargo, and the movement of the guard plate drives the elastic telescopic rod to move, and the movement of the elastic telescopic rod drives the push rod to move, and the push rod moves the ramp block 2 to move, and the movement of the ramp block 2 drives the push plate to move, and the movement of the push plate drives the splint to move, and the splint clamps the cargo.

[0009] According to the above technical solution, the clamping device also includes a clamping plate and a T-shaped rod. The clamping plate is slidably installed on the front part of the baffle, and the T-shaped rod is fixedly installed on the top of the clamping plate. The movement of the clamping plate drives the T-shaped rod to start moving. The T-shaped rod stops moving after the clamping plate contacts the cargo. The push rod continues to push under the drive of the elastic telescopic rod. The T-shaped rod stops moving and pushes the push rod in the opposite direction after contacting the push rod so that it no longer pushes.

[0010] According to the above technical solution, the side of the inclined block 2 that is close to the push rod is set as an inclined surface, and a spring 1 is arranged between the push plate and the clamping plate. By setting the inclined surface, it is ensured that the push rod can smoothly push the inclined block 2 when moving, and by setting the spring 1, it is ensured that the clamping plate can achieve autonomous reset.

[0011] According to the above technical solution, the lubrication device includes a ratchet, a fixed column, a sliding column, a long rod, a pawl and a pull rod, the ratchet is fixedly installed on the circumferential surface of the gear, the fixed column is fixedly installed on the inner wall of the bracket, the sliding column is slidably installed on the circumferential surface of the fixed column, the long rod is fixedly installed on the left side of the sliding column, the pawl is slidably installed on the circumferential surface of the sliding column, and the pull rod is fixedly installed on the top of the sliding column. The long rod is pushed to start moving while the T-shaped rod moves, the long rod moves to drive the sliding column to start moving, the sliding column moves to drive the pawl to start moving, and the pawl moves and contacts with the ratchet.

[0012] According to the above technical solution, the lubrication device also includes an oil tank, an oil pipe, a valve and a valve switch. The oil tank is fixedly installed on the top of the bracket, the oil pipe is fixedly installed on the bottom of the oil tank, the valve is fixedly installed on the circumferential surface of the oil pipe, and the valve switch is fixedly installed on the control end of the valve. When the sliding column moves, the pull rod starts to move. The movement of the pull rod pulls the valve switch to start rotating. The valve switch rotates to open the valve to allow the lubricating oil to flow out from the inside of the oil tank through the oil pipe and drip onto the gears and chains.

[0013] According to the above technical solution, the ratchet is in contact with the pawl, a spring 2 is arranged between the pawl and the sliding column, a spring 3 is arranged between the long rod and the inner wall of the bracket, and a torsion spring is arranged between the valve switch and the valve control end. The contact ensures that the ratchet will not reverse, the spring 2 is arranged to ensure that the pawl can achieve self-reset, the spring 3 is arranged to ensure that the long rod can achieve self-reset, and the spring 3 is arranged to ensure that the valve switch can achieve self-reset.

[0014] The present invention provides a logistics transportation loading and lifting device and method. It has the following beneficial effects: (1) This invention lifts the cargo by rotating the chain with the cooperation of the counterweight. The chain drive can withstand a large load and maintain stable working efficiency under long lifting strokes and heavy weights. It also has high transmission accuracy and is not prone to slipping. The pulley is driven to slide on the slide rail by the movement of the guard plate. The guard plate moves and extends when the cargo is lifted to block people from approaching the dangerous area, thus avoiding potential safety accidents and ensuring that the cargo will not fall on people around. This provides additional protection, avoids accidental injuries, and prevents people from mistakenly entering the work area and causing safety accidents.

[0015] (2) The invention drives the clamping plate to move by the movement of the push plate, and the movement of the clamping plate clamps the cargo, ensuring that the cargo will not be displaced or slipped during the lifting process, reducing the risk of damage or overturning due to loose cargo, improving work efficiency and reducing friction damage to the cargo, preventing the cargo from being displaced during the lifting process and causing the cargo to fall and be damaged, stopping the movement by the T-bar and pushing the push rod in the opposite direction after contacting the push rod so that it no longer pushes, ensuring that the clamping plate will not over-clamp the cargo, and accurately controlling the clamping force when the clamping plate clamps the cargo to avoid damage to the cargo due to improper clamping. At the same time, the stability of the cargo is ensured to prevent damage to the cargo due to improper clamping.

[0016] (3) This invention ensures that the gear will not slide down or move in the opposite direction due to external force or improper operation during cargo lifting, thereby preventing cargo from falling or equipment from being damaged, by moving the pawl to contact the ratchet wheel. This provides higher safety. By turning the valve switch to open the valve, lubricating oil flows out from the inside of the oil tank through the oil pipe and drips onto the gears and chains. Lubricating them helps reduce friction, heat and wear caused by friction, thereby extending the service life of the equipment and preventing moisture and other corrosive substances in the air from coming into contact with the metal surface to cause rust and corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the base and top plate structure of the present invention; Figure 3 It is a schematic cross-sectional view of the structure of the protective device of the present invention; Figure 4 It is a schematic cross-sectional view of the structure of the clamping device of the present invention; Figure 5 It is a cross-sectional schematic diagram of the chain and the fixing rod structure of the present invention; Figure 6 For the present invention Figure 3 A schematic diagram of the structure enlargement of part A; Figure 7 It is a schematic cross-sectional view of the structure of the lubrication device of the present invention; Figure 8 It is a schematic cross-sectional view of the oil tank and oil pipe structure of the present invention; Fig. 9 It is a schematic cross-sectional view of the ratchet and pawl structure of the present invention.

[0018] In the figure: 1, base; 2, top plate; 3, counterweight; 4, bracket; 5, motor; 6, gear; 7, chain; 8, L-shaped rod; 9, slide rail; 10, pulley; 11, guard plate; 12, inclined plane block 1; 131, fixed rod; 132, baffle; 133, spline; 134, push plate; 135, inclined plane block 2; 136, elastic telescopic rod; 137, push rod; 138, splint; 139, T-shaped rod; 141, ratchet; 142, fixed column; 143, slide column; 144, long rod; 145, pawl; 146, pull rod; 147, oil tank; 148, oil pipe; 149, valve; 1410, valve switch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0020] See also Figure 1-Figure 9 , one embodiment of the present invention is: a logistics transportation loading and lifting device, comprising a base 1, a top plate 2 is fixedly installed on the top of the base 1, a counterweight 3 is fixedly installed on the top of the top plate 2, a bracket 4 is fixedly installed on the front of the top plate 2, and a protective device is arranged on the left side of the bracket 4; Among them, the protective device includes a motor 5, a gear 6, a chain 7, an L-shaped rod 8, a slide rail 9, a pulley 10, a guard plate 11 and an inclined block 12. The motor 5 is fixedly installed on the left side of the bracket 4, a gear 6 is fixedly installed on the output end of the motor 5, and the other gear 6 is rotatably installed at the bottom of the bracket 4. The two gears 6 are connected through the chain 7 transmission. The L-shaped rod 8 is fixedly installed on the left side of the chain 7, the slide rail 9 is fixedly installed on the left side of the top plate 2, the pulley 10 is rotatably installed on the top of the slide rail 9, the guard plate 11 is rotatably installed on the left side of the pulley 10, and the inclined block 12 is fixedly installed on the right side of the guard plate 11. The goods are lifted by the rotation of the chain 7 and the cooperation of the counterweight block 3. The chain 7 transmission can withstand a large load and maintain stable working efficiency under a long lifting stroke and heavy weight, and has high transmission accuracy and is not easy to slip.

[0021] The gear 6 is meshed with the chain 7, the pulley 10 is in contact with the slide rail 9, and the side of the L-shaped rod 8 and the inclined plane block 12 that is close to each other is set as an inclined plane. The meshing ensures that the gear 6 can drive the chain 7 to rotate when it rotates, and the pulley 10 can rotate above the slide rail 9 by contacting. The setting of the inclined plane ensures that the L-shaped rod 8 can push the inclined plane block 12 while moving.

[0022] A method for lifting a logistics transportation loading lifting device, using the above-mentioned logistics transportation loading lifting device, comprises the following steps: Step 1: First, make sure that the weight of the cargo is within the lifting range of the lifting device, then place the cargo in front of the lifting device and start the motor 5, so that the motor 5 drives the gear 6 to start rotating, and the gear 6 rotates to drive the chain 7 to start rotating; Step 2: Chain 7 rotates and lifts the goods with the cooperation of counterweight block 3. Chain 7 transmission can bear a large load and maintain stable working efficiency under the condition of long lifting stroke and heavy weight, and has high transmission accuracy and is not easy to slip. Step three: while the chain 7 rotates, the L-shaped rod 8 starts to move, the L-shaped rod 8 moves to push the inclined plane block 12 to start moving, the inclined plane block 12 moves to drive the guard plate 11 to start moving, the guard plate 11 moves to drive the pulley 10 to slide on the slide rail 9, the guard plate 11 moves and extends out when lifting the goods to block people from approaching the dangerous area, avoiding potential safety accidents, ensuring that the goods will not fall on the surrounding people, providing additional protection, avoiding accidental injuries, and preventing people from mistakenly entering the work area and causing safety accidents.

[0023] When this embodiment is working: first confirm that the weight of the goods is within the lifting range of the lifting device, then place the goods in the front of the lifting device and start the motor 5, so that the motor 5 drives the gear 6 to start rotating, and the rotation of the gear 6 drives the chain 7 to start rotating. The chain 7 rotates and lifts the goods with the cooperation of the counterweight block 3. The chain 7 transmission can withstand a large load and can maintain stable working efficiency under a long lifting stroke and heavy weight, and has high transmission accuracy and is not easy to slip; when the chain 7 rotates, it drives the L-shaped rod 8 to start moving, and the L-shaped rod 8 moves to push the inclined plane block 12 to start moving, and the inclined plane block 12 moves to drive the guard plate 11 to start moving, and the guard plate 11 moves to drive the pulley 10 to slide on the slide rail 9. When the guard plate 11 moves, it extends out to block people from approaching the dangerous area when lifting the goods, avoiding potential safety accidents, ensuring that the goods will not fall on the surrounding people, providing additional protection, avoiding accidental injuries, and preventing people from mistakenly entering the working area and causing safety accidents.

[0024] See also Figure 1-Figure 9On the basis of the above embodiment, in another embodiment of the present invention, a clamping device is provided at the front of the bracket 4, a lubricating device is provided at the top of the bracket 4, the clamping device comprises a fixed rod 131, a baffle 132, a tooth insert 133, a push plate 134, a ramp block 135, an elastic telescopic rod 136 and a push rod 137, the fixed rod 131 is fixedly mounted on the front of the chain 7, the baffle 132 is fixedly mounted on the top of the fixed rod 131, the tooth insert 133 is fixedly mounted on the front of the fixed rod 131, the push plate 134 is slidably mounted on the front of the baffle 132, and the ramp block 135 is fixedly mounted on the top of the fixed rod 131. The second surface block 135 is fixedly installed on the left side of the push plate 134, the elastic telescopic rod 136 is fixedly installed on the front of the guard plate 11, and the push rod 137 is fixedly installed on the movable end of the elastic telescopic rod 136. The movement of the push plate 134 drives the clamping plate 138 to start moving. The movement of the clamping plate 138 clamps the cargo to ensure that the cargo will not be displaced or slipped during the lifting process, reducing the risk of damage or overturning caused by loose cargo, improving work efficiency and reducing friction damage to the cargo, preventing the cargo from being displaced during the lifting process and causing the cargo to fall and be damaged.

[0025] The clamping device also includes a clamping plate 138 and a T-shaped rod 139. The clamping plate 138 is slidably installed in front of the baffle 132, and the T-shaped rod 139 is fixedly installed on the top of the clamping plate 138. The T-shaped rod 139 stops moving and pushes the push rod 137 in the opposite direction after contacting the push rod 137 so that it no longer pushes, thereby ensuring that the clamping plate 138 does not excessively clamp the goods. When the clamping plate 138 clamps the goods, the clamping force is accurately controlled to avoid damage to the goods due to improper clamping. At the same time, the stability of the goods is ensured to prevent damage to the goods due to improper clamping.

[0026] The side of the inclined block 135 and the push rod 137 that is close to each other is set as an inclined surface, and a spring 1 is set between the push plate 134 and the clamping plate 138. The inclined surface is set to ensure that the push rod 137 can smoothly push the inclined block 135 when moving, and the spring 1 is set to ensure that the clamping plate 138 can achieve self-reset.

[0027] The lubrication device includes a ratchet 141, a fixed column 142, a sliding column 143, a long rod 144, a pawl 145 and a pull rod 146. The ratchet 141 is fixedly mounted on the circumferential surface of the gear 6, the fixed column 142 is fixedly mounted on the inner wall of the bracket 4, the sliding column 143 is slidably mounted on the circumferential surface of the fixed column 142, the long rod 144 is fixedly mounted on the left side of the sliding column 143, the pawl 145 is slidably mounted on the circumferential surface of the sliding column 143, and the pull rod 146 is fixedly mounted on the top of the sliding column 143. The pawl 145 moves to contact the ratchet 141, thereby ensuring that the gear 6 will not slide down or move in the opposite direction due to external force or improper operation during cargo lifting, causing cargo to fall or equipment damage, thereby providing higher safety.

[0028] The lubrication device also includes an oil tank 147, an oil pipe 148, a valve 149 and a valve switch 1410. The oil tank 147 is fixedly installed on the top of the bracket 4, the oil pipe 148 is fixedly installed on the bottom of the oil tank 147, the valve 149 is fixedly installed on the circumferential surface of the oil pipe 148, and the valve switch 1410 is fixedly installed on the control end of the valve 149. The valve switch 1410 is turned to open the valve 149 to allow the lubricating oil to flow out from the inside of the oil tank 147 through the oil pipe 148 and drip onto the gear 6 and the chain 7. Lubricating them helps to reduce friction, reduce heat and wear generated by friction, thereby extending the service life of the equipment and preventing moisture and other corrosive substances in the air from contacting the metal surface to cause rust and corrosion.

[0029] The ratchet 141 is in contact with the pawl 145, a spring 2 is arranged between the pawl 145 and the sliding column 143, a spring 3 is arranged between the long rod 144 and the inner wall of the bracket 4, and a torsion spring is arranged between the valve switch 1410 and the control end of the valve 149. The contact ensures that the ratchet 141 will not reverse, the spring 2 ensures that the pawl 145 can achieve self-reset, the spring 3 ensures that the long rod 144 can achieve self-reset, and the spring 3 ensures that the valve switch 1410 can achieve self-reset.

[0030] When the present embodiment is working, the chain 7 rotates while driving the fixed rod 131 to start moving, the fixed rod 131 moves to drive the baffle plate 132 and the inserting gear 133 to start moving, the inserting gear 133 moves to lift the cargo, and the guard plate 11 moves while driving the elastic telescopic rod 136 to start moving, the elastic telescopic rod 136 moves to drive the push rod 137 to start moving, the push rod 137 moves to drive the inclined plane block 135 to start moving, the inclined plane block 135 moves to drive the push plate 134 to start moving, the push plate 134 moves to drive the clamping plate 138 to start moving, the clamping plate 138 moves to clamp the cargo, ensuring that the cargo will not be displaced or slipped during the lifting process, thereby reducing the risk of damage or overturning caused by loose cargo. Improve work efficiency and reduce friction damage to goods, prevent goods from being displaced during the lifting process and causing damage to the goods by falling; when the splint 138 moves, it drives the T-bar 139 to start moving, and the T-bar 139 stops moving after the splint 138 contacts the goods, and the push rod 137 continues to push under the drive of the elastic telescopic rod 136, and the T-bar 139 stops moving and pushes the push rod 137 in the opposite direction after contacting the push rod 137 so that it no longer pushes, ensuring that the splint 138 does not over-clamp the goods, and accurately controlling the clamping force when the splint 138 clamps the goods to avoid damage to the goods due to improper clamping, while ensuring the stability of the goods to prevent damage to the goods due to improper clamping.

[0031] When the T-bar 139 moves, the long bar 144 is pushed to start moving. The movement of the long bar 144 drives the sliding column 143 to start moving. The movement of the sliding column 143 drives the pawl 145 to start moving. The pawl 145 moves and contacts the ratchet 141, ensuring that the gear 6 will not slide down or move in the opposite direction due to external force or improper operation during the lifting of the goods, causing the goods to fall or the equipment to be damaged, thereby providing higher safety; when the sliding column 143 moves, it drives the pull rod 146 to start moving. The pull rod 146 moves and pulls the valve switch 1410 to start rotating. The valve switch 1410 rotates to open the valve 149 to allow the lubricating oil to flow out from the inside of the oil tank 147 through the oil pipe 148 and drip onto the gear 6 and the chain 7. Lubricating them helps to reduce friction, reduce the heat and wear generated by friction, thereby extending the service life of the equipment and preventing moisture and other corrosive substances in the air from contacting the metal surface to cause rust and corrosion.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A logistics transportation loading and lifting device, comprising a base (1), characterized in that: A top plate (2) is fixedly mounted on the top of the base (1), a counterweight (3) is fixedly mounted on the top of the top plate (2), a bracket (4) is fixedly mounted on the front of the top plate (2), a protective device is arranged on the left side of the bracket (4), a clamping device is arranged on the front of the bracket (4), and a lubrication device is arranged on the top of the bracket (4); The protective device comprises a motor (5), two gears (6), a chain (7), an L-shaped rod (8), a slide rail (9), a pulley (10), a guard plate (11) and an inclined plane block (12), wherein the motor (5) is fixedly mounted on the left side of the bracket (4), one gear (6) is fixedly mounted on the output end of the motor (5), the other gear (6) is rotatably mounted on the bottom of the bracket (4), the two gears (6) are connected by a chain (7), the L-shaped rod (8) is fixedly mounted on the left side of the chain (7), the slide rail (9) is fixedly mounted on the left side of the top plate (2), the pulley (10) is rotatably mounted on the top of the slide rail (9), the guard plate (11) is rotatably mounted on the left side of the pulley (10), and the inclined plane block (12) is fixedly mounted on the right side of the guard plate (11).

2. A logistics transportation loading and lifting device according to claim 1, characterized in that: The gear (6) is meshed with the chain (7), the pulley (10) is in contact with the slide rail (9), and a surface of the L-shaped rod (8) and the inclined surface block (12) that is close to each other is configured as an inclined surface.

3. A logistics transportation loading and lifting device according to claim 2, characterized in that: The clamping device comprises a fixed rod (131), a baffle (132), a tooth insert (133), a push plate (134), a second inclined surface block (135), an elastic telescopic rod (136) and a push rod (137), wherein the fixed rod (131) is fixedly mounted on the front of the chain (7), the baffle (132) is fixedly mounted on the top of the fixed rod (131), the tooth insert (133) is fixedly mounted on the front of the fixed rod (131), the push plate (134) is slidably mounted on the front of the baffle (132), the second inclined surface block (135) is fixedly mounted on the left side of the push plate (134), the elastic telescopic rod (136) is fixedly mounted on the front of the guard plate (11), and the push rod (137) is fixedly mounted on the movable end of the elastic telescopic rod (136).

4. A logistics transportation loading and lifting device according to claim 3, characterized in that: The clamping device further comprises a clamping plate (138) and a T-shaped rod (139), wherein the clamping plate (138) is slidably mounted on the front of the baffle (132), and the T-shaped rod (139) is fixedly mounted on the top of the clamping plate (138).

5. A logistics transportation loading and lifting device according to claim 4, characterized in that: A surface of the inclined surface block 2 (135) and the push rod (137) that is close to each other is arranged as an inclined surface, and a spring 1 is arranged between the push plate (134) and the clamping plate (138).

6. A logistics transportation loading and lifting device according to claim 5, characterized in that: The lubrication device comprises a ratchet (141), a fixed column (142), a sliding column (143), a long rod (144), a pawl (145) and a pull rod (146); the ratchet (141) is fixedly mounted on the circumferential surface of the gear (6); the fixed column (142) is fixedly mounted on the inner wall of the bracket (4); the sliding column (143) is slidably mounted on the circumferential surface of the fixed column (142); the long rod (144) is fixedly mounted on the left side of the sliding column (143); the pawl (145) is slidably mounted on the circumferential surface of the sliding column (143); and the pull rod (146) is fixedly mounted on the top of the sliding column (143).

7. A logistics transportation loading and lifting device according to claim 6, characterized in that: The lubrication device further comprises an oil tank (147), an oil pipe (148), a valve (149) and a valve switch (1410); the oil tank (147) is fixedly mounted on the top of the bracket (4); the oil pipe (148) is fixedly mounted on the bottom of the oil tank (147); the valve (149) is fixedly mounted on the circumferential surface of the oil pipe (148); and the valve switch (1410) is fixedly mounted on the control end of the valve (149).

8. A logistics transportation loading and lifting device according to claim 7, characterized in that: The ratchet (141) is in contact with the pawl (145), a second spring is provided between the pawl (145) and the sliding column (143), a third spring is provided between the long rod (144) and the inner wall of the bracket (4), and a torsion spring is provided between the valve switch (1410) and the control end of the valve (149).

9. A method for lifting a logistics transportation loading lifting device, using the logistics transportation loading lifting device according to claim 8, characterized in that: The following steps are involved: Step 1: First, confirm that the weight of the cargo is within the lifting range of the lifting device, then place the cargo in front of the lifting device and start the motor (5), so that the motor (5) drives the gear (6) to start rotating, and the gear (6) rotates to drive the chain (7) to start rotating; Step 2: The chain (7) rotates and the goods are lifted in cooperation with the counterweight (3). The chain (7) transmission can withstand a large load and maintain stable working efficiency under the condition of a long lifting stroke and a large weight. The transmission accuracy is high and it is not easy to slip. Step 3: As the chain (7) rotates, the L-shaped rod (8) starts to move. The L-shaped rod (8) moves to push the inclined plane block (12) to start to move. The inclined plane block (12) moves to drive the guard plate (11) to start to move. The guard plate (11) moves to drive the pulley (10) to slide on the slide rail (9). When the goods are lifted, the guard plate (11) moves and extends to prevent people from approaching the dangerous area, avoiding potential safety accidents, ensuring that the goods will not fall on the surrounding people, providing additional protection, avoiding accidental injuries, and preventing people from mistakenly entering the work area and causing safety accidents.

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