A logistics transportation device convenient for unloading

Abstract

The present invention relates to the field of logistics transportation, and particularly to a logistics transportation device convenient for unloading. The technical problem is that traditional van trucks are not convenient for quickly moving goods one by one to the unloading opening of the carriage, and it is not easy to quickly release the clamping state of the goods, resulting in low unloading efficiency. A logistics transportation device convenient for unloading includes a carriage, two tail doors hinged to the tail of the carriage, two shells fixedly connected to the inner wall of the carriage, a placement rack hinged to the lower part of the inner wall of the carriage, and two hydraulic push rods one fixedly connected to the bottom of the inner wall of the carriage. The placement rack and the goods rotate upward, the pulley jacks up the goods by a certain degree, and the goods slide down along the pulley. The lowermost one of the goods moves to the horizontal and forms an angle with the goods in contact with it. The limiting plate two enters the angle to limit the other goods except the lowermost one. After the outermost goods are unloaded, the remaining goods continue to slide down, which can conveniently and quickly move the goods one by one to the unloading opening of the carriage and is convenient for improving the unloading efficiency.

Description

Technical Field

[0001] The present invention relates to the field of logistics transportation, and particularly to a logistics transportation device convenient for unloading goods. Background Art

[0002] A logistics transportation device refers to equipment for transporting goods, which includes various types of transportation equipment such as roads, railways, waterways, and aviation. Among them, the most common road logistics transportation device is a van. A van is a truck model with a closed cargo compartment. This design can provide better protection for goods and prevent them from being damaged by natural factors such as wind, sun, rain, and snow.

[0003] The carriage of a traditional van has a certain depth. When unloading some goods such as suitcases, usually a small forklift operated by one person is first placed in the carriage. The staff operates the small forklift to transport the goods one by one from the outside to the inside to the unloading opening of the carriage, and then the staff outside the carriage operates a large forklift to unload the goods transported to the unloading opening of the carriage one by one. The process of transporting the goods to the unloading opening of the carriage takes a relatively long time, and it is not convenient to quickly move the goods one by one to the unloading opening of the carriage. Moreover, most traditional vans rely on devices such as safety ropes, safety buckles, or chain locks to fix and clamp the goods. When unloading, it takes a lot of time to unlock these clamping devices, which is not convenient to quickly release the clamping state of the goods, thus resulting in a low unloading efficiency. Summary of the Invention

[0004] In order to overcome the disadvantages that a traditional van is not convenient to quickly move goods one by one to the unloading opening of the carriage and is not convenient to quickly release the clamping state of the goods, resulting in a low unloading efficiency, the present invention provides a logistics transportation device convenient for unloading that can conveniently and quickly move goods one by one to the unloading opening of the carriage, and can facilitate quickly releasing the clamping state of the goods to improve the unloading efficiency.

[0005] The technical solution of the present invention: A logistics transportation device convenient for unloading, including a carriage, one side of the carriage is provided with an opening, and a protrusion is provided on the inner wall of the side of the carriage away from the opening;

[0006] Two tail gates hinged to the tail of the carriage;

[0007] Two shells fixedly connected to the inner wall of the carriage;

[0008] A placement rack hinged to the lower part of the inner wall of the carriage;

[0009] Two hydraulic push rods I fixedly connected to the bottom of the inner wall of the carriage;

[0010] Two one - slot frames respectively fixedly connected to the telescopic rods of the two hydraulic push rods I;

[0011] A cross bar fixedly connected to one side of the placement rack;

[0012] A limiting frame fixedly connected to one side of the top of the placement rack;

[0013] Several goods placed on the top of the placement rack;

[0014] A jacking mechanism arranged on the carriage and the placement rack;

[0015] A limiting mechanism arranged on the carriage and the housing.

[0016] Further explanation: A forklift slot is opened on one side of the placement rack.

[0017] Further explanation: The jacking mechanism includes a sliding rack slidably connected to the placement rack, two groups of pulleys rotatably connected to the sliding rack, two groups of inclined blocks fixedly connected to the bottom of the sliding rack, and a transmission component arranged on the carriage and the placement rack.

[0018] Further explanation: A plurality of pulleys on one side of the two groups of pulleys close to the tailgate are all arranged to incline upwards.

[0019] Further explanation: The transmission component includes two transmission racks slidably connected to the bottom of the placement rack, two groups of rollers respectively rotatably connected to the two transmission racks, two racks one respectively fixedly connected to one side of the two transmission racks, two rotating shafts one rotatably connected to one side of the placement rack, two gears one respectively fixedly connected to the two rotating shafts one, and two arc racks fixedly connected to the lower part of the inner wall of the carriage. The two gears one are respectively meshed with the two arc racks.

[0020] Further explanation: The limiting mechanism includes two guiding frames fixedly connected to the bottom of the inner wall of the carriage, two hydraulic push rods two fixedly connected to the inner wall of the carriage, two double - stroke groove racks one slidably connected to the inner wall of the carriage, two double - stroke groove racks two slidably connected to the inner wall of the carriage. Limiting grooves are opened on the two double - stroke groove racks one and the two double - stroke groove racks two. The two double - stroke groove racks one and the two double - stroke groove racks two are respectively fixedly connected. One side of the two double - stroke groove racks two is respectively fixedly connected to the telescopic rods of the two hydraulic push rods two, and a telescopic component arranged on the housing and the guiding frames.

[0021] Further explanation: The telescopic component includes two limiting plates one respectively slidably connected to the two guiding frames, two contact shafts one respectively fixedly connected to the two limiting plates one, two limiting plates two respectively slidably connected to the two guiding frames, the two limiting plates two are respectively slidably connected to the two housings, and two contact shafts two respectively fixedly connected to the two limiting plates two.

[0022] Further explanation, it also includes a clamping mechanism disposed on the carriage and the housing. The clamping mechanism is used to clamp the goods during transportation. The clamping mechanism includes two groups of hydraulic push rods III fixedly connected to the upper part of the inner wall of the carriage, two upward frames slidably connected to the upper part of the inner wall of the carriage, and the two upward frames are respectively fixedly connected to the telescopic rods of the two groups of hydraulic push rods III. The upper parts of the two upward frames are provided with inclined surfaces, two clamping frames respectively slidably connected to the two housings, the lower parts of the two clamping frames are chamfered, two groups of return springs respectively disposed between the two clamping frames and the two housings, and a downward pressing assembly disposed on the housing and the upward frame.

[0023] Further explanation, the downward pressing assembly includes two groups of racks II respectively fixedly connected to the two upward frames, two rotating shafts II respectively rotatably connected to the upper parts of the inner walls of the two housings, two gears II respectively fixedly connected to the two rotating shafts II, the two groups of racks II are respectively engaged with the two gears II, and two downward pressing frames respectively fixedly connected to the two rotating shafts II.

[0024] Further explanation, it also includes two groups of balls respectively embedded and connected to the two limiting plates I.

[0025] The beneficial effects of the present invention are as follows: 1. The hydraulic push rod I drives the one-word groove frame to move upward. The one-word groove frame drives the placement frame and the goods to rotate upward through the cross bar. The pulley jacks up the goods to a certain height. The goods will slide down along the pulley. The lowermost one of the goods will move to a horizontal state and form an angle with the goods in contact with it. The limiting plate II enters the angle to limit the other goods except the lowermost one. After the outermost one of the goods is unloaded, the limiting plate II no longer limits the goods. The remaining goods continue to slide down. The lowermost one of the goods moves to a horizontal state again and forms an angle, which can conveniently and quickly move the goods to the unloading port of the carriage one by one, facilitating the improvement of the unloading efficiency.

[0026] 2. The hydraulic push rod III drives the two upward frames to move upward. The inclined surfaces on the two upward frames respectively squeeze the two clamping frames towards each other. The two clamping frames clamp the two sides of the goods. The two upward frames respectively drive the two groups of racks II to move upward. The two groups of racks II respectively drive the two gears II to rotate. The two gears II respectively drive the two rotating shafts II to rotate. The two rotating shafts II respectively drive the two downward pressing frames to rotate downward. The two downward pressing frames press the top of the goods, which can clamp the goods, reduce the probability of the goods moving during transportation, and improve the stability of the goods during transportation.

[0027] 3. The hydraulic push rod three drives the two upward frames to move downward. The upward frames no longer press the clamping frames, and the return springs will rebound and drive the two clamping frames to move away from each other. The two clamping frames are disengaged from the goods. The two upward frames respectively drive the two groups of racks two to move downward, and the two groups of racks two respectively drive the two gears two to rotate in the reverse direction. The two gears two respectively drive the two rotating shafts two to rotate in the reverse direction. The two rotating shafts two respectively drive the two downward pressing frames to rotate upward and disengage from the goods, which can facilitate the rapid release of the clamping state of the goods and further improve the unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the tailgate unfolding of the present invention.

[0030] Figure 3 It is a cross-sectional view of the present invention.

[0031] Figure 4 It is a cross-sectional view of the first gear and the arc rack of the present invention.

[0032] Figure 5 It is a cross-sectional view of the placing rack, the first hydraulic push rod, the one-word groove rack and the cross bar of the present invention.

[0033] Figure 6 It is a three-dimensional structural schematic diagram of the jacking mechanism of the present invention.

[0034] Figure 7 It is a disassembled three-dimensional structural schematic diagram of the jacking mechanism of the present invention.

[0035] Figure 8 It is a cross-sectional view of the limiting mechanism and the clamping mechanism of the present invention.

[0036] Figure 9 It is a disassembled three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0037] Figure 10 It is a three-dimensional structural schematic diagram of the clamping mechanism of the present invention.

[0038] Figure 11 It is a disassembled three-dimensional structural schematic diagram of the clamping mechanism of the present invention.

[0039] Figure 12 It is a three-dimensional structural schematic diagram of the clamping frame of the present invention.

[0040] Figure 13 It is a state diagram of the goods during unloading of the present invention.

[0041] Figure 14 It is a state diagram of the placing rack, the first hydraulic push rod and the one-word groove rack during unloading of the present invention.

[0042] Figure 15 This is a three-dimensional structural schematic diagram of the first limiting plate and the ball of the present invention.

[0043] Markings in the attached drawings: 1: carriage, 2: tailgate, 3: housing, 4: placement rack, 5: first hydraulic push rod, 6: one-word groove rack, 7: cross bar, 8: limiting rack, 81: goods, 91: sliding rack, 92: pulley, 93: inclined block, 94: transmission rack, 95: roller, 96: first rack, 97: first rotating shaft, 98: first gear, 99: arc rack, 101: guiding rack, 102: second hydraulic push rod, 103: first double-travel groove rack, 104: second double-travel groove rack, 105: first limiting plate, 106: first contact shaft, 107: second limiting plate, 108: second contact shaft, 111: third hydraulic push rod, 112: upward traveling rack, 113: clamping rack, 114: return spring, 115: second rack, 116: second rotating shaft, 117: second gear, 118: downward pressing rack, 12: ball. Detailed implementation manners

[0044] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of this invention are used to explain the present invention, but not to limit the present invention.

[0045] Embodiment 1: A logistics transportation device for facilitating unloading, as Figures 1 - 15 shown, includes a carriage 1, one side of the carriage 1 is open, and the opening on one side of the carriage 1 is used for loading and unloading goods 81. There are protrusions on the inner wall of the side of the carriage 1 far from the opening;

[0046] Two tailgates 2 connected to the tail of the carriage 1 through hinges;

[0047] Two housings 3 connected to the inner wall of the carriage 1 through bolts;

[0048] A placement rack 4 hinged to the lower part of the inner wall of the carriage 1, and one side of the placement rack 4 is in contact with the protrusion on the inner wall of the carriage 1;

[0049] Two first hydraulic push rods 5 fixedly connected to the bottom of the inner wall of the carriage 1, and the two first hydraulic push rods 5 are symmetrically arranged;

[0050] Two one-word groove racks 6 respectively welded to the telescopic rods of the two first hydraulic push rods 5;

[0051] A cross bar 7 fixedly connected to one side of the placement rack 4, and the cross bar 7 is located in the one-word grooves of the two one-word groove racks 6;

[0052] A limiting rack 8 fixedly connected to one side of the top of the placement rack 4;

[0053] A number of goods 81 placed on the top of the placement rack 4, the hydraulic push rod 5 drives the placement rack 4 to rotate upward through the slotted rack 6 and the cross bar 7, and then drives the goods 81 to rotate upward;

[0054] A jacking mechanism is provided on the carriage 1 and the placement rack 4, and the jacking mechanism is used to jack up the goods 81 during unloading;

[0055] A limiting mechanism is provided on the carriage 1 and the housing 3, and the limiting mechanism is used to limit the goods 81.

[0056] A forklift slot is provided on one side of the placement rack 4.

[0057] The jacking mechanism includes a sliding frame 91 slidably connected to the placement rack 4, two groups of pulleys 92 rotatably connected to the sliding frame 91. The two groups of pulleys 92 are symmetrically arranged, and the number of each group of pulleys 92 is several. The pulleys 92 can make the goods 81 slide more smoothly. Two groups of inclined blocks 93 fixedly connected to the bottom of the sliding frame 91. The two groups of inclined blocks 93 are symmetrically arranged, and the number of each group of inclined blocks 93 is two. A transmission component provided on the carriage 1 and the placement rack 4.

[0058] Several pulleys 92 in the two groups of pulleys 92 close to the tailgate 2 are all arranged in an upward inclination. The upwardly inclined pulleys 92 can make the lowermost one of the goods 81 move to a horizontal position when rotating upward.

[0059] The transmission component includes two transmission frames 94 slidably connected to the bottom of the placement rack 4. The two transmission frames 94 are symmetrically arranged. Two groups of rollers 95 respectively rotatably connected to the two transmission frames 94. The number of each group of rollers 95 is two. The rollers 95 jack up the sliding frame 91 through the inclined blocks 93, and then drive the pulleys 92 to move upward. Two racks 96 fixedly connected to one side of the two transmission frames 94 respectively. Two rotating shafts 97 rotatably connected to one side of the placement rack 4. The two rotating shafts 97 are symmetrically arranged. Two gears 98 fixedly connected to the two rotating shafts 97 respectively. Two arc-shaped racks 99 fixedly connected to the lower part of the inner wall of the carriage 1. The two gears 98 are respectively engaged with the two arc-shaped racks 99. The arc-shaped racks 99 drive the racks 96 to move through the gears 98, and then drive the rollers 95 to move through the transmission frames 94.

[0060] The limiting mechanism includes two guide frames 101 bolted to the bottom of the inner wall of the carriage 1. The two guide frames 101 are symmetrically arranged and are respectively located in the two shells 3. Two hydraulic push rods II 102 fixed to the inner wall of the carriage 1. The two hydraulic push rods II 102 are symmetrically arranged. Two one-way groove frames 103 slidably connected to the inner wall of the carriage 1. Two two-way groove frames 104 slidably connected to the inner wall of the carriage 1. The two one-way groove frames 103 and the two two-way groove frames 104 are both provided with limiting grooves. The two one-way groove frames 103 are respectively fixed to the two two-way groove frames 104. One sides of the two two-way groove frames 104 are respectively fixed to the telescopic rods of the two hydraulic push rods II 102. The hydraulic push rod II 102 drives the two-way groove frame 104 to move, and then drives the one-way groove frame 103 to move. A telescopic assembly arranged on the shell 3 and the guide frame 101.

[0061] The telescopic assembly includes two limiting plates I 105 respectively slidably connected to the two guide frames 101. Two contact shafts I 106 respectively fixed to the two limiting plates I 105. The two contact shafts I 106 are respectively located in the limiting grooves of the two one-way groove frames 103. The one-way groove frame 103 drives the contact shaft I 106 to move, and then drives the limiting plate I 105 to move. Two limiting plates II 107 respectively slidably connected to the two guide frames 101. The two limiting plates II 107 are respectively slidably connected to the two shells 3. Two contact shafts II 108 respectively fixed to the two limiting plates II 107. The two contact shafts II 108 are respectively located in the limiting grooves of the two two-way groove frames 104. The two-way groove frame 104 drives the contact shaft II 108 to move, and then drives the limiting plate II 107 to move.

[0062] Initially, the device is installed on the base of the tractor, the two tailgates 2 are in a closed state, the placement rack 4 is in a horizontal position, the protrusion on the inner wall of the carriage 1 holds one side of the placement rack 4, the sliding rack 91 and the pulley 92 are located below the top of the placement rack 4, and the limit plate 1 105 and the limit plate 2 107 are in a state of being retracted into the shell 3. When it is necessary to load goods 81, the staff opens the two tailgates 2 to expose the opening on one side of the carriage 1, and then the staff operates the large forklift to send the small manual forklift used to move the goods 81 in the carriage 1 into the carriage 1. After the manual forklift is sent into the carriage 1, the staff outside the carriage 1 operates the large forklift to place the goods 81 to be transported on the placement rack 4 one by one. At the same time, the staff in the carriage 1 operates the small manual forklift The manual forklift moves the first cargo 81 to a position in contact with the limiting frame 8, and then neatly arranges the subsequent cargo 81 one by one on the placement rack 4. When there is only enough space for one cargo 81 in the compartment 1, the staff outside the compartment 1 operates the large forklift to move the small manual forklift in the compartment 1 out of the compartment 1, and then puts the last cargo 81 on the placement rack 4, and makes the last cargo 81 flush and close to the cargo 81 in front. After all the cargo 81 are placed, the staff closes the two tailgates 2. After the tailgate 2 is closed, the staff controls the telescopic rods of the two hydraulic push rods 102 to retract, and the telescopic rods of the two hydraulic push rods 102 drive the two double-way slot racks 104 to move, and the two double-way slot racks 104 move and drive the two double-way slot racks 104 to move. 103 moves, the limiting grooves on the two double-way slot frames 103 squeeze the two contact shafts 106 in the direction of approaching each other, and the two contact shafts 106 move in the direction of approaching each other, driving the two limiting plates 105 to move in the direction of approaching each other, and the two limiting plates 105 extend out of the shell 3, and cooperate with the limiting frame 8 to form a fence, which can reduce the probability of the outermost cargo 81 colliding with the tailgate 2 during transportation. Then the staff stops the hydraulic push rod 102 and drives the traction vehicle to transport the device to the destination. After arriving at the destination, the staff opens the tailgate 2 and controls the telescopic rods of the two hydraulic push rods 5 to extend upward. The telescopic rods of the two hydraulic push rods 5 drive the two one-shaped slot frames 6 to move upward, and the one-shaped slot frames 6 drive the cross bar 7 The placing rack 4 rotates upward around the hinge point, and the placing rack 4 rotates upward to drive the limiting rack 8, the goods 81, the sliding rack 91, the pulley 92, the inclined block 93, the transmission rack 94, the roller 95, the rack 1 96, the rotating shaft 1 97 and the gear 1 98 to rotate upward. Under the action of the arc-shaped rack 99, the gear 1 98 will rotate as the placing rack 4 rotates upward. The rotation of the gear 1 98 drives the rack 1 96 to move. The movement of the rack 1 96 drives the transmission rack 94 to move. The movement of the transmission rack 94 drives the roller 95 to move. The roller 95 moves and contacts with the inclined block 93 and squeezes the inclined block 93 upward. The inclined block 93 moves upward to drive the sliding rack 91 and the pulley 92 to move upward. The pulley 92 moves upward to lift the goods 81 to a certain height. Under the action of gravity,The goods 81 will slide downward along the two sets of pulleys 92. Since several pulleys 92 near the tailgate 2 are all inclined upward, the lowermost goods 81 will move along the upward-inclined pulleys 92 to a horizontal state and finally stop after contacting the first limiting plate 105. The first limiting plate 105 limits the goods 81. At this time, the lowermost goods 81 will form an angle with the goods 81 in contact with it. The staff controls the telescopic rod of the second hydraulic push rod 102 to continue to contract, and the first double-travel trough rack 103 and the second double-travel trough rack 104 continue to move. The limiting grooves on the two second double-travel trough racks 104 squeeze the two contact shafts 108 towards each other. The movement of the two contact shafts 108 towards each other drives the two second limiting plates 107 to move towards each other. The two second limiting plates 107 extend out of the housing 3 and enter the angle formed by the two outermost goods 81. The second limiting plates 107 limit the other goods 81 except the lowermost one. Then the staff operates a large forklift, inserts the forklift forks into the forklift slots of the placement rack 4, and then controls the forklift forks to lift the outermost goods 81 upward. When the lowest point of the goods 81 is higher than the first limiting plate 105, the staff drives the forklift to move the goods 81 out of the carriage 1. After unloading the outermost goods 81, the staff controls the telescopic rod of the second hydraulic push rod 102 to extend. The telescopic rod of the second hydraulic push rod 102 drives the first double-travel trough rack 103 and the second double-travel trough rack 104 to move in the reverse direction. The limiting grooves on the second double-travel trough rack 104 will squeeze towards the direction away from each other. The movement of the two contact shafts 108 towards the direction away from each other drives the two second limiting plates 107 to move towards the direction away from each other. The two second limiting plates 107 no longer limit the goods 81 above. Under the action of gravity, the remaining goods 81 will continue to slide downward along the two sets of pulleys 92. Under the action of several upward-inclined pulleys 92 near the tailgate 2, the lowermost goods 81 will move to a horizontal state again and form an angle with the goods 81 in contact with it again. Subsequently, the staff controls the telescopic rod of the second hydraulic push rod 102 to contract until the two second limiting plates 107 enter the angle formed by the goods 81 again. The second limiting plates 107 limit the goods 81 above again. Through the above operations, the goods 81 can be conveniently and quickly moved to the unloading port of the carriage 1 one by one, improving the unloading efficiency. After the second limiting plates 107 extend out of the housing 3 again, the staff drives the forklift to unload the outermost goods 81 and repeats the above operations many times to unload the remaining goods 81. After all the goods 81 are unloaded, the staff controls the telescopic rod of the second hydraulic push rod 102 to extend to the initial position. The extension of the telescopic rod of the second hydraulic push rod 102 drives the first double-travel trough rack 103 and the second double-travel trough rack 104 to move in the reverse direction and reset. The limiting grooves on the first double-travel trough rack 103 and the second double-travel trough rack 104 will respectively squeeze the two contact shafts 106 and the two contact shafts 108 towards the direction away from each other.The two contact shafts I 106 and the two contact shafts II 108 move in a direction away from each other, respectively driving the two limit plates I 105 and the two limit plates II 107 to reset in a direction away from each other. After the limit plates I 105 and the limit plates II 107 are reset, the staff controls the telescopic rods of the two hydraulic push rods I 5 to contract downward. The telescopic rods of the two hydraulic push rods I 5 drive the two one-word groove frames 6 to move downward. The one-word groove frame 6 drives the placement rack 4 to rotate downward around the hinge point through the cross bar 7. The downward rotation of the placement rack 4 drives the limit frame 8, the sliding frame 91, the pulley 92, the inclined block 93, the transmission frame 94, the roller 95, the rack I 96, the rotating shaft I 97 and the gear I 98 to rotate downward. Under the action of the arc rack 99, the gear I 98 will rotate in the reverse direction during the downward rotation of the placement rack 4. The reverse rotation of the gear I 98 drives the rack I 96 to move in the reverse direction. The reverse movement of the rack I 96 drives the transmission frame 94 to move in the reverse direction. The reverse movement of the transmission frame 94 drives the roller 95 to move in the reverse direction. The roller 95 is disengaged from the inclined block 93. Under the action of gravity, the sliding frame 91, the pulley 92 and the inclined block 93 will reset to the initial position downward. After the hydraulic push rod I 5 is reset, the staff closes the tailgate 2, which is convenient for the next transportation.,

[0063] Embodiment 2: On the basis of Embodiment 1, as Figure 8 , Figures 10 - 12 and Figure 15 shown, it further includes a clamping mechanism arranged on the carriage 1 and the housing 3. The clamping mechanism is used to clamp the goods 81 during transportation. The clamping mechanism includes two groups of hydraulic push rods III 111 connected to the upper part of the inner wall of the carriage 1 by bolts. The two groups of hydraulic push rods III 111 are symmetrically arranged. The number of each group of hydraulic push rods III 111 is two. Two upward moving frames 112 slidably connected to the upper part of the inner wall of the carriage 1. The two upward moving frames 112 are respectively fixedly connected to the telescopic rods of the two groups of hydraulic push rods III 111. The upper parts of the two upward moving frames 112 are provided with inclined surfaces. Two clamping frames 113 respectively slidably connected to the two housings 3. The lower parts of the two clamping frames 113 are chamfered. The two hydraulic push rods III 111 drive the two upward moving frames 112 to move upward respectively, and then squeeze the two clamping frames 113 in a direction approaching each other. Two groups of return springs 114 respectively arranged between the two clamping frames 113 and the two housings 3. The number of each group of return springs 114 is two. The two return springs 114 in the same group are symmetrically arranged. A downward pressing assembly arranged on the housing 3 and the upward moving frame 112.

[0064] The pressing-down assembly includes two sets of second racks 115 respectively fixed to two upward frames 112. The number of second racks 115 in each set is two, and the two second racks 115 in the same set are symmetrically arranged. Two second rotating shafts 116 are respectively rotatably connected to the upper parts of the inner walls of two housings 3. Two second gears 117 are respectively fixed to the two second rotating shafts 116. The two sets of second racks 115 are respectively meshed with the two second gears 117. Two pressing-down frames 118 are respectively fixed to the two second rotating shafts 116. The upward frame 112 drives the second gear 117 to rotate through the second rack 115, and then drives the pressing-down frame 118 to press down the goods 81 tightly through the second rotating shaft 116.

[0065] It further includes two sets of balls 12 respectively embedded in two first limiting plates 105. The number of balls 12 in each set is several, and the several balls 12 in the same set are evenly spaced.

[0066] Initially, rack 2 115 clamps rotating shaft 2 116 through gear 2 117, thereby keeping lower pressing frame 118 in a vertical state. After all the goods 81 are placed, the staff controls the telescopic rods of two sets of hydraulic push rods 3 111 to retract upward, and the telescopic rods of the two sets of hydraulic push rods 3 111 drive the two upper frames 112 to move upward. The upper frames 112 move upward and contact with the clamping frames 113. The rounded corners at the bottom of the clamping frames 113 can reduce the friction between the upper frames 112 and the clamping frames 113. The inclined surfaces on the two upper frames 112 respectively move the two clamping frames 113 closer to each other. The two upper frames 112 move upward and respectively drive the two sets of racks 115 to move upward. The two sets of racks 115 move upward and respectively drive the two gears 117 to rotate. The rotation of the two gears 117 drives the two shafts 116 to rotate. The rotation of the two shafts 116 drives the two lower pressing frames 118 to rotate downward. The two lower pressing frames 118 press the top of the cargo 81. Through the above operations, the cargo 81 can be The clamping reduces the probability of the cargo 81 moving during transportation and improves the stability of the cargo 81 during transportation. When the cargo 81 arrives at the destination and needs to be unloaded, the staff controls the telescopic rods of the two sets of hydraulic push rods 111 to extend downward, and the telescopic rods of the two sets of hydraulic push rods 111 drive the two upper frames 112 to move downward. After the upper frame 112 moves downward for a distance, it is out of contact with the clamping frame 113. The upper frame 112 no longer squeezes the clamping frame 113, and the reset spring 114 rebounds and drives the two clamping frames 113 to move away from each other. The two clamping frames 113 move toward The two upper frames 112 move away from each other and lose contact with the cargo 81, the two upper frames 112 move downward and respectively drive the two sets of rack 2 115 to move downward, the two sets of rack 2 115 move downward and respectively drive the two gear 2 117 to rotate in the opposite direction, the reverse rotation of the two gear 2 117 drives the two rotating shaft 2 116 to rotate in the opposite direction, the reverse rotation of the two rotating shaft 2 116 drives the two lower pressure frames 118 to rotate upward, the two lower pressure frames 118 rotate upward and lose contact with the cargo 81, and through the above operations, the cargo 81 can be quickly released from the clamping state, thereby further improving the unloading efficiency.

[0067] The ball 12 can reduce the friction between the limit plate 105 and the cargo 81, thereby reducing the probability that the side of the cargo 81 will be worn due to excessive friction between the limit plate 105 and the limit plate 105 when the forklift lifts the cargo 81 upward.

[0068] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A logistics transportation device facilitating unloading, characterized in that: including a carriage, one side of the carriage is open, and a protrusion is provided on the inner wall of the side of the carriage away from the opening; two tail gates hinged to the tail of the carriage; two shells fixedly connected to the inner wall of the carriage; a placement rack hinged to the lower part of the inner wall of the carriage; two hydraulic push rods I fixedly connected to the bottom of the inner wall of the carriage; two one-word groove racks respectively fixedly connected to the telescopic rods of the two hydraulic push rods I; a cross bar fixedly connected to one side of the placement rack; a limit rack fixedly connected to one side of the top of the placement rack; a number of goods placed on the top of the placement rack; a jacking mechanism arranged on the carriage and the placement rack; a limiting mechanism arranged on the carriage and the shell; the jacking mechanism includes a sliding rack slidably connected to the placement rack, two groups of pulleys rotatably connected to the sliding rack, two groups of inclined blocks fixedly connected to the bottom of the sliding rack, and a transmission component arranged on the carriage and the placement rack; the transmission component includes two transmission racks slidably connected to the bottom of the placement rack, two groups of rollers respectively rotatably connected to the two transmission racks, two racks I respectively fixedly connected to one side of the two transmission racks, two rotating shafts I rotatably connected to one side of the placement rack, two gears I respectively fixedly connected to the two rotating shafts I, two arc racks fixedly connected to the lower part of the inner wall of the carriage, and the two gears I are respectively meshed with the two arc racks; the limiting mechanism includes two guiding racks fixedly connected to the bottom of the inner wall of the carriage, two hydraulic push rods II fixedly connected to the inner wall of the carriage, two double-way groove racks I slidably connected to the inner wall of the carriage, two double-way groove racks II slidably connected to the inner wall of the carriage, limiting grooves are formed on both the two double-way groove racks I and the two double-way groove racks II, the two double-way groove racks I and the two double-way groove racks II are respectively fixedly connected, one sides of the two double-way groove racks II are respectively fixedly connected to the telescopic rods of the two hydraulic push rods II, and a telescopic component arranged on the shell and the guiding rack; the telescopic component includes two limiting plates I respectively slidably connected to the two guiding racks, two contact shafts I respectively fixedly connected to the two limiting plates I, two limiting plates II respectively slidably connected to the two guiding racks, the two limiting plates II are respectively slidably connected to the two shells, and two contact shafts II respectively fixedly connected to the two limiting plates II.

2. The logistics transportation device convenient for unloading according to claim 1 is characterized in that: A forklift slot is formed on one side of the placement rack.

3. A logistics transportation device facilitating unloading according to claim 1, characterized in that: A number of pulleys on the side of the two groups of pulleys close to the tail gate are all arranged obliquely upward.

4. A logistics transportation device facilitating unloading according to claim 1, characterized in that: It also includes a clamping mechanism arranged on the carriage and the shell, the clamping mechanism is used to clamp the goods during transportation, the clamping mechanism includes two groups of hydraulic push rods III fixedly connected to the upper part of the inner wall of the carriage, two upward moving racks slidably connected to the upper part of the inner wall of the carriage, the two upward moving racks are respectively fixedly connected to the telescopic rods of the two groups of hydraulic push rods III, inclined surfaces are provided on the upper parts of the two upward moving racks, two clamping racks respectively slidably connected to the two shells, rounded corners are formed on the lower parts of the two clamping racks, two groups of return springs respectively arranged between the two clamping racks and the two shells, and a pressing-down component arranged on the shell and the upward moving rack.

5. The logistics transportation device facilitating unloading according to claim 4, characterized in that: The pressing-down assembly includes two sets of second racks fixedly connected to two upward frames respectively, two second rotating shafts rotatably connected to the upper parts of the inner walls of two shells respectively, two second gears fixedly connected to the two second rotating shafts respectively, the two sets of second racks meshing with the two second gears respectively, and two pressing-down frames fixedly connected to the two second rotating shafts respectively.

6. The logistics transportation device facilitating unloading according to claim 5, characterized in that: It further includes two sets of balls respectively embedded and connected to two first limit plates.

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