A pallet stacking and unloading device connected to a lifting frame

Abstract

This utility model discloses a pallet stacking and unloading device connected to a lifting frame, belonging to the field of pallet stacking technology. It addresses the problem that the method of hoisting pallets from above is inconvenient for operators. The device includes a movable base, four upright frames fixed to both sides of the movable base, and a lifting frame body disposed on one side of two sets of upright frames close to each other. Its key feature is that it also includes a support and lifting mechanism acting on the lifting frame body. The support and lifting mechanism includes a first hydraulic cylinder fixed to one side of the movable base, movable plates disposed on both sides of the inner surface of the movable base, and movable plates disposed on the opposite sides of the two lifting frame bodies. This utility model facilitates pallet stacking for users and avoids high-altitude operations, thereby improving the safety and applicability of the device.

Description

Technical Field

[0001] This utility model belongs to the field of pallet stacking technology, specifically relating to a pallet stacking and unloading device connected to a lifting frame. Background Technology

[0002] Pallets, also known as nine-legged plywood pallets, have nine legs distributed on the reverse side. Square pallets have four legs in the middle of each of the four sides and four corners, and one leg in the very center of the pallet, for a total of nine legs. Generally, three legs are arranged side by side in three parallel groups. In actual use, multiple pallets are often stacked together.

[0003] In existing technologies, pallet stacking is mostly carried out by hoisting the pallets from above. Therefore, high-altitude operations are unavoidable. When it is necessary to disassemble or reassemble the pallets, they can only be removed from above, which is inconvenient for operators and increases the trouble of stacking and disassembling pallets, making them unsuitable for use.

[0004] Therefore, there is a need for a pallet stacking and unloading device connected to a lifting frame to solve the problem that the existing technology of hoisting pallets from above is inconvenient for operators. Utility Model Content

[0005] The purpose of this invention is to provide a pallet stacking and unloading device connected to a lifting frame, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pallet stacking and unloading device connected with a lifting frame, comprising a movable base, four upright frames fixed on both sides of the movable base, and a lifting frame body disposed on one side of two sets of upright frames close to each other, characterized in that: it further comprises a support and lifting mechanism acting on the lifting frame body;

[0007] The supporting lifting mechanism includes a first hydraulic cylinder fixed to one side of the movable base, movable plates disposed on both sides of the inner surface of the movable base, movable plates disposed on the opposite side of the two lifting frame bodies, mounting plates disposed on the opposite side of the movable plates, a lifting component acting on the mounting plate, and a translation component acting on the lifting frame bodies and the movable plates. The output end of the first hydraulic cylinder passes through the movable base and is fixed to the surface of the adjacent movable plate.

[0008] It should be noted in the solution that the translation component includes a second threaded rod that is threaded through and connected to one end of the mounting plate, a limiting shaft that is slidably inserted through and inserted into the other end of the mounting plate, and a second hydraulic cylinder fixed to one side of the moving plate. One end of the second threaded rod is rotatably connected to the surface of the adjacent moving plate, one side of the limiting shaft is fixed to the surface of the adjacent moving plate, and the output end of the second hydraulic cylinder passes through the adjacent moving plate and is fixed to the surface of the adjacent lifting frame body.

[0009] It is further worth noting that the lifting assembly includes a sliding seat slidably inserted into the inner cavity of the frame, a first threaded rod threaded through and connected to the middle position of two of the sliding seats, a positioning rod threaded through and inserted into the middle position of the other two sliding seats, and a first motor fixed to the top of two of the frames.

[0010] Furthermore, it should be noted that one end of the first threaded rod passes through the upright frame and is fixed to the surface of the first motor at the adjacent position, the other end of the first threaded rod is rotatably connected to the inner wall of the upright frame at the adjacent position, both ends of the positioning rod are fixed to the inner wall of the upright frame at the adjacent position, and one end of the sliding seat is fixed to the surface of the mounting plate at the adjacent position.

[0011] In a preferred embodiment, the supporting lifting mechanism further includes a pressing assembly disposed on the top of the lifting frame body. The pressing assembly includes a storage frame fixed to both ends of the top of the lifting frame body, an embedded shaft fixed to the inner cavity of the storage frame, a limiting sleeve slidably sleeved on the outer peripheral surface of the embedded shaft, a pressure plate fixed at one side of the limiting sleeve, and a spring sleeved on the outer peripheral surface of the embedded shaft at the top of the limiting sleeve at an adjacent position.

[0012] In a preferred embodiment, one end of the spring is fixed to the inner wall of the adjacent storage frame, and the other end of the spring is fixed to the surface of the adjacent limiting sleeve. The top of one side of the pressure plate is arc-shaped, and the other side of the pressure plate is inclined.

[0013] In a preferred embodiment, the support lifting mechanism further includes a positioning component, which includes a rod groove formed on the surface of the movable plate, a third threaded rod rotatably connected to the inner cavity of the rod groove, a threaded sleeve threaded to both ends of the outer peripheral surface of the third threaded rod, and a positioning plate fixed to the top of the threaded sleeve in an L-shape.

[0014] Compared with the prior art, the pallet stacking and unloading device connected to the lifting frame provided by this utility model has at least the following beneficial effects:

[0015] (1) By starting the first hydraulic cylinder, the two movable plates are moved to the middle position of the movable base and the pallet can be supported by the movable plates. The distance between the two lifting frame bodies is adjusted by rotating the two second threaded rods according to the length of the pallet. The second hydraulic cylinder is started so that the lifting frame body is inserted into the slot position in the pallet. After starting the first motor, the pallet is lifted to the corresponding height under the support of the lifting frame body and stacked one by one. This makes it convenient for the user to stack the pallet and avoids the user from performing high-altitude operations, thereby improving the safety of the device and improving the applicability of the device.

[0016] (2) When the first hydraulic cylinder is controlled to adjust the two movable plates to support the pallet of the corresponding size, the distance between the two positioning plates is adjusted according to the width of the pallet. Thus, the pallet can be positioned under the cooperation of the lifting frame body and the positioning plates. In this way, when pallets of the same size are stacked in batches, the pallets are not placed in the same state on the top surface of the two movable plates, which would cause the pallets to be placed in an uneven manner. This further improves the applicability of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention from the rear view direction;

[0019] Figure 3 This is a three-dimensional structural diagram of a portion of the present invention;

[0020] Figure 4 In this utility model Figure 3 Enlarged structural diagram at point A;

[0021] Figure 5 This is a three-dimensional structural diagram of the movable plate in this utility model.

[0022] In the diagram: 1. Movable base; 2. Vertical frame; 3. Lifting frame body; 4. First threaded rod; 5. First motor; 6. Sliding seat; 7. Mounting plate; 8. Movable plate; 9. First hydraulic cylinder; 10. Second threaded rod; 11. Limiting shaft; 12. Second hydraulic cylinder; 13. Storage frame; 14. Pressure plate; 15. Embedded shaft; 16. Limiting sleeve; 17. Spring; 18. Rod groove; 19. Third threaded rod; 20. Threaded sleeve; 21. Positioning plate; 22. Movable plate; 23. Positioning rod. Detailed Implementation

[0023] Please see Figure 1-5This utility model provides a pallet stacking and unloading device connected with a lifting frame, including a movable base 1, four upright frames 2 fixed on both sides of the movable base 1, a lifting frame body 3 set on one side close to each other of the two sets of upright frames 2, and a support and lifting mechanism acting on the lifting frame body 3.

[0024] The supporting lifting mechanism includes a first hydraulic cylinder 9 fixed to one side of the movable base 1, movable plates 8 disposed on both sides of the inner surface of the movable base 1, movable plates 22 disposed on the opposite side of the two lifting frame bodies 3, mounting plates 7 disposed on the opposite side of the movable plates 22, a lifting component acting on the mounting plate 7, and a translation component acting on the lifting frame body 3 and the movable plates 22. The output end of the first hydraulic cylinder 9 passes through the movable base 1 and is fixed to the surface of the adjacent movable plate 8.

[0025] When pallets need to be stacked, the distance between the two movable plates 8 is adjusted according to the length of the pallet, so that the bottom of both sides of the pallet is placed on top of the two movable plates 8. Then, the translation component is used to insert one side of the lifting frame body 3 into the slot in the pallet. With the support of the lifting frame body 3, the lifting component can lift the pallet to a certain height. The movable base 1 can slide along a certain trajectory with the action of its bottom casters. After the device is moved to one end of the stack of pallets, the pallets to be stacked are supported and lifted to a certain height. Then, the first hydraulic cylinder 9 is activated to move the movable plates 8 in a direction away from each other to the inner cavity of the movable base 1. Then, the movable base 1 is slid to move the pallets to be stacked to the top of the stack of pallets. The translation component is used to release the support of the pallet. The movable base 1 is slid to one end of the stack of pallets again and the above operation is repeated. This makes it easier for users to stack pallets and avoids users from operating at heights, thereby improving the safety of the device.

[0026] Please see Figure 1-5 The translation component includes a second threaded rod 10 that is threaded through and connected to one end of the mounting plate 7, a limiting shaft 11 that is slidably inserted through and inserted into the other end of the mounting plate 7, and a second hydraulic cylinder 12 that is fixed to one side of the moving plate 22. One end of the second threaded rod 10 is rotatably connected to the surface of the adjacent moving plate 22, one side of the limiting shaft 11 is fixed to the surface of the adjacent moving plate 22, and the output end of the second hydraulic cylinder 12 passes through the adjacent moving plate 22 and is fixed to the surface of the adjacent lifting frame body 3.

[0027] By rotating the second threaded rod 10 according to the length of the required batch of pallets, the limiting shaft 11 limits the movement of the adjacent moving plate 22. Under the action of the threaded structure between the second threaded rod 10 and the adjacent mounting plate 7, the distance between the two lifting frame bodies 3 changes. This allows the lifting frame bodies 3 to approach the sides of the pallet. After activating the second hydraulic cylinder 12, the lifting frame bodies 3 move towards each other and insert into the pallet's insertion position. After each pallet is stacked, activating the second hydraulic cylinder 12 allows the lifting frame bodies 3 to quickly return to the position adjusted by rotating the second threaded rod 10. This facilitates the adjustment of the distance between the lifting frame bodies 3 to accommodate the stacking of a batch of pallets of the same size. By controlling the output of the second hydraulic cylinder 12, the lifting frame bodies 3 can extend or disengage from the pallet's insertion position, thereby improving the convenience of stacking pallets.

[0028] Please see Figure 1-5 The lifting assembly includes a sliding seat 6 slidably inserted into the inner cavity of the upright frame 2, a first threaded rod 4 threaded through and connected to the middle position of two of the sliding seats 6, a positioning rod 23 threaded through and inserted to the middle position of the other two sliding seats 6, and a first motor 5 fixed to the top of two of the upright frames 2. One end of the first threaded rod 4 passes through the upright frame 2 and is fixed to the surface of the first motor 5 at the adjacent position. The other end of the first threaded rod 4 is rotatably connected to the inner wall of the adjacent upright frame 2. Both ends of the positioning rod 23 are fixed to the inner wall of the adjacent upright frame 2. One end of the sliding seat 6 is fixed to the surface of the mounting plate 7 at the adjacent position.

[0029] By synchronously starting the two first motors 5, the first threaded rod 4 can rotate. Since the inner wall of the upright frame 2 can resist and limit the sliding seat 6, when the first motor 5 drives the first threaded rod 4 to rotate, the mounting plate 7 can move vertically under the cooperation of the threaded structure between the inner wall of the two sliding seats 6 and the first threaded rod 4. During this process, the positioning rod 23 can further limit the movement trajectory of the mounting plate 7, making its movement more stable. Thus, the mounting plate 7 can drive the lifting frame body 3 to move vertically, so that when the two lifting frame bodies 3 are close to each other, the pallet can be lifted to the corresponding height at the insertion position of the pallet.

[0030] Please see Figure 1-5The supporting lifting mechanism also includes a pressing assembly disposed on the top of the lifting frame body 3. The pressing assembly includes a storage frame 13 fixed to both ends of the top of the lifting frame body 3, an inner shaft 15 fixed to the inner cavity of the storage frame 13, a limiting sleeve 16 slidably sleeved on the outer peripheral surface of the inner shaft 15, a pressure plate 14 fixed at one side of the limiting sleeve 16, and a spring 17 sleeved on the outer peripheral surface of the inner shaft 15 at the top of the adjacent limiting sleeve 16. One end of the spring 17 is fixed to the inner wall of the adjacent storage frame 13, and the other end of the spring 17 is fixed to the surface of the adjacent limiting sleeve 16. The top of one side of the pressure plate 14 is arc-shaped, and the other side of the pressure plate 14 is inclined.

[0031] When the lifting frame body 3 moves towards each other, the arc surface and inclined surface on one side of the pressure plate 14 successively abut against the surface of the pallet, causing the pressure plate 14 to be subjected to a vertically upward force. This causes the limiting sleeve 16 to slide along the outer circumferential surface of the inner shaft 15 in the adjacent position and abut against the spring 17 in the adjacent position, causing it to deform. Thus, when the pressure plate 14 moves to the top of the pallet, the spring 17's rebound force causes the pressure plate 14 to press against the top of the pallet, thereby improving the support effect on the pallet.

[0032] Please see Figure 1-5 The supporting lifting mechanism also includes a positioning component, which includes a rod groove 18 opened on the surface of the movable plate 8, a third threaded rod 19 rotatably connected to the inner cavity of the rod groove 18, a threaded sleeve 20 threadedly connected to both ends of the outer peripheral surface of the third threaded rod 19, and a positioning plate 21 fixed to the top of the threaded sleeve 20 in an L-shape.

[0033] Since the external thread structures on both sides of the outer circumferential surface of the third threaded rod 19 are set in opposite directions, when the third threaded rod 19 is rotated, the two positioning plates 21 can be driven to move closer to each other under the cooperation between the internal thread structure on the inner wall of the threaded sleeve 20 and the external thread structure on the outer circumferential surface of the third threaded rod 19.

[0034] When the first hydraulic cylinder 9 is controlled to move the movable plates 8 closer together, so that the two sides of the bottom of the pallet can be placed on top of the movable plates 8, the third threaded rod 19 is rotated according to the width of the pallet. Since the external thread structures on both sides of the outer circumference of the third threaded rod 19 are set in opposite directions, the threaded sleeve 20 can move the two positioning plates 21 closer together under the cooperation between the internal thread structure on its inner wall and the external thread on the outer circumference of the third threaded rod 19. This allows the inner surface of the positioning plate 21 to fit against the four corners of the pallet, thus playing a positioning role when the pallet is placed on top of the movable plates 8, thereby preventing the pallet from being placed in different states on the top surfaces of the two movable plates 8, which would cause the pallet to be placed unevenly.

Claims

1. A pallet stacker and unstacker connected with a lifting frame, comprising a moving base (1), four vertical frames (2) fixed on both sides of the moving base (1), and a lifting frame body (3) arranged on the side where the two groups of vertical frames (2) are close to each other, characterized in that: Also include acting on the lifting frame body (3) support lifting mechanism; The support lifting mechanism includes a first hydraulic cylinder (9) fixed to one side of the mobile base (1), a movable plate (8) arranged on the inner surface of the mobile base (1), a moving plate (22) arranged on the side of the two lifting frame bodies (3) away from each other, a mounting plate (7) arranged on the side of the moving plate (22) away from each other, a lifting assembly acting on the mounting plate (7), a translation assembly acting on the lifting frame body (3) and the moving plate (22), and the output end of the first hydraulic cylinder (9) passes through the mobile base (1) and is fixed to the surface of the adjacent position movable plate (8).

2. A pallet unstacking apparatus incorporating a lift according to claim 1, characterised in that: The translation assembly includes a second threaded rod (10) threaded connected to one end of the mounting plate (7), a limiting shaft (11) slidingly inserted into the other end of the mounting plate (7), and a second hydraulic cylinder (12) fixed to one side of the moving plate (22), one end of the second threaded rod (10) is rotatably connected to the surface of the adjacent position moving plate (22), one side of the limiting shaft (11) is fixed to the surface of the adjacent position moving plate (22), and the output end of the second hydraulic cylinder (12) passes through the adjacent position moving plate (22) and is fixed to the surface of the adjacent position lifting frame body (3).

3. A pallet unstacking apparatus incorporating a lift according to claim 1 characterised in that: The lifting assembly includes a sliding seat (6) slidingly inserted into the inner cavity of the vertical frame (2), a first threaded rod (4) threaded connected to the middle position of two of the sliding seats (6), a positioning rod (23) slidingly inserted into the middle position of the other two sliding seats (6), and a first motor (5) fixed to the top of two of the vertical frames (2).

4. A pallet unstacking apparatus incorporating a lift according to claim 3, characterised in that: One end of the first threaded rod (4) passes through the vertical frame (2) and is fixed to the surface of the adjacent position first motor (5), the other end of the first threaded rod (4) is rotatably connected to the inner wall of the adjacent position vertical frame (2), both ends of the positioning rod (23) are fixed to the inner wall of the adjacent position vertical frame (2), and one end of the sliding seat (6) is fixed to the surface of the adjacent position mounting plate (7).

5. A pallet unstacking apparatus incorporating a lift according to claim 4, characterised in that: The support lifting mechanism further includes a pressing assembly arranged on the top of the lifting frame body (3), the pressing assembly includes a storage frame (13) fixed to the top of the lifting frame body (3), an embedded shaft (15) fixed to the inner cavity of the storage frame (13), a limiting sleeve (16) slidingly sleeved on the outer surface of the embedded shaft (15), a pressing plate (14) fixed to one side of the limiting sleeve (16), and a spring (17) sleeved on the outer surface of the embedded shaft (15) at the top of the adjacent position limiting sleeve (16).

6. A pallet unstacking apparatus incorporating a lift according to claim 5 wherein: One end of the spring (17) is fixed to the inner wall of the adjacent position storage frame (13), the other end of the spring (17) is fixed to the surface of the adjacent position limiting sleeve (16), the top of one side of the pressing plate (14) is arc-shaped, and the other side of the pressing plate (14) is inclined.

7. A pallet unstacking apparatus incorporating a lift according to claim 1 characterised in that: The supporting lifting mechanism also includes a positioning component, which includes a rod groove (18) opened on the surface of the movable plate (8), a third threaded rod (19) rotatably connected to the inner cavity of the rod groove (18), a threaded sleeve (20) threadedly connected to both ends of the outer peripheral surface of the third threaded rod (19), and a positioning plate (21) fixed to the top of the threaded sleeve (20) in an L-shape.

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