Tray lifting mechanism

Abstract

The utility model discloses a tray lifting mechanism. The tray lifting mechanism comprises a frame, a fork arm and a limiting seat, a support is fixedly installed on the top of the frame, a lifting frame is movably installed on the front side of the support, fork arms are symmetrically installed on the two sides of the front end of the lifting frame, and the limiting base is fixedly installed at the bottoms of the two fork arms. A pressing rod is vertically and movably installed in the middle of the interior of the limiting base, a shaft base is fixedly installed at the bottom of the pressing rod, connecting rods are movably installed at the two ends of the shaft base through rotating shafts A, movable plates are symmetrically and movably installed on the two sides of the interior of the limiting base, and the other ends of the connecting rods are movably connected with the movable plates through rotating shafts B; and a fixed seat is fixedly mounted on the outer side of the top of the movable plate. The two sets of limiting clamping plates can be driven to clamp the two sides of the tray when the fork arm lifts the tray, so that the two sides of the tray can be synchronously limited when the tray is lifted, the stability of the tray during lifting is greatly improved, toppling is prevented, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics, in particular to a pallet lifting mechanism. Background Art

[0002] A pallet lift is a mechanical device used to lift and lower cargo pallets. It is usually used in logistics and warehousing systems. Its main function is to control the lifting and lowering of cargo pallets through a certain power source or drive mechanism to meet the needs of stacking or handling cargo at different heights. The pallet lift can effectively improve the storage density and handling efficiency of cargo, while reducing labor costs and safety risks during handling. This mechanism usually has the characteristics of simple structure, easy operation, safety and reliability. It is widely used in warehouses, logistics centers, production workshops and other occasions, providing convenience for logistics transportation and warehousing management.

[0003] However, the existing pallet lifting mechanism is often used to lift the pallet by inserting the fork arm under the pallet. At this time, there is a small possibility that the pallet will tip over due to tilting and shaking during the lifting process, causing personal injury and damage to goods, and the stability and safety are insufficient.

[0004] Therefore, how to provide a pallet lifting mechanism is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] One purpose of the utility model is to provide a pallet lifting mechanism. When the fork arm lifts the pallet, the utility model can drive two sets of limit clamps to clamp the two sides of the pallet, so that the pallet can be limited on both sides synchronously during the lifting operation, which greatly improves the stability of the pallet during lifting, prevents tipping, and improves safety.

[0006] A pallet lifting mechanism according to an embodiment of the utility model includes a frame, a fork arm and a limit seat;

[0007] A bracket is fixedly installed on the top of the frame, a lifting frame is movably installed on the front side of the bracket, fork arms are symmetrically installed on both sides of the front end of the lifting frame, and the limit seat is fixedly installed at the bottom of the two sets of fork arms;

[0008] A pressure rod is vertically and movably installed in the center of the limit seat, an axle seat is fixedly installed at the bottom of the pressure rod, connecting rods are movably installed at both ends of the axle seat through a rotating shaft A, movable plates are symmetrically and movably installed on both sides of the limit seat, the other end of the connecting rod is movably connected to the movable plate through a rotating shaft B, a fixed seat is fixedly installed on the outer side of the top of the movable plate, movable rods are movably penetrated on the upper and lower sides of the fixed seat, and a limiting clamp is fixedly installed on the inner end of the movable rod and above the movable plate.

[0009] Furthermore, a return spring is sleeved under the pressure rod, the top of the return spring is fixedly connected to the bottom of the limit seat, and the bottom of the return spring is fixedly connected to the shaft seat.

[0010] Furthermore, a clamping spring is sleeved on one side of the movable rod and located between the fixing seat and the limiting clamping plate.

[0011] Furthermore, pulleys are movably installed at both ends of the limiting seat and are respectively located on the upper and lower sides of the movable plate.

[0012] Furthermore, a hydraulic rod is fixedly installed on the rear side of the top of the frame, an L-shaped bracket is fixedly installed on the top of the hydraulic rod, and the bottom of the L-shaped bracket is fixedly connected to the lifting frame.

[0013] Furthermore, movable wheels are fixedly installed at the four corners of the bottom of the frame.

[0014] Furthermore, the shaft seat and the movable plate are movably connected via a connecting rod, and the connecting rod is obliquely arranged between the shaft seat and the movable plate.

[0015] The beneficial effects of the utility model are:

[0016] The utility model places a fork arm at the bottom of the pallet and when it is lifted upward, the pressure rod can be pressed to move downward, at this time the pressure rod can drive the connecting rods on both sides to move downward, and the two sets of connecting rods can drive the movable plates on both sides to move toward the inside of the limit seat at the same time when moving downward, at this time, the two sets of fixed seats and the limit clamping plates can be driven to move inward, and the two sets of limit clamping plates can be clamped on the outer walls of both sides of the pallet at this time, and as the movable plate gradually moves, the clamping spring can be compressed and deformed, at this time the clamping spring can drive the limit clamping plates to clamp more stably on both sides of the pallet, so that the two sides of the pallet can be limited by the limit clamping plates during the lifting operation, which can effectively prevent the pallet from shaking during the lifting process, and improve the stability and safety of the lifting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a front view structural schematic diagram of a pallet lifting mechanism proposed by the utility model;

[0019] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a limit seat of a pallet lifting mechanism.

[0020] In the figure: 1. frame; 2. bracket; 3. lifting frame; 4. hydraulic rod; 5. L-shaped bracket; 6. fork arm; 7. limit seat; 8. movable plate; 9. pressure rod; 10. moving wheel; 11. axle seat; 12. rotating shaft A; 13. connecting rod; 14. rotating shaft B; 15. fixed seat; 16. movable rod; 17. limit clamp; 18. clamping spring; 19. reset spring; 20. pulley. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] refer to Figure 1 , a pallet lifting mechanism, comprising a frame 1, a fork arm 6 and a limit seat 7;

[0023] A bracket 2 is fixedly installed on the top of the frame 1, a lifting frame 3 is movably installed on the front side of the bracket 2, fork arms 6 are symmetrically installed on both sides of the front end of the lifting frame 3, and a limit seat 7 is fixedly installed at the bottom of the two sets of fork arms 6;

[0024] A hydraulic rod 4 is fixedly installed on the rear side of the top of the frame 1. The hydraulic rod 4 is provided with a foot switch, and the extension and retraction of the hydraulic rod 4 can be controlled by the foot switch. An L-shaped bracket 5 is fixedly installed on the top of the hydraulic rod 4, and the bottom of the L-shaped bracket 5 is fixedly connected to the lifting frame 3;

[0025] Secondly, moving wheels 10 are fixedly installed at the four corners of the bottom of the frame 1, and the moving wheels 10 at both ends of the rear side of the bottom of the frame 1 are set as universal wheels, through which the moving wheels 10 can realize the movement and steering operation of the equipment;

[0026] In this embodiment, the device can be moved to a suitable position by the moving wheels 10, and then the device is pushed to insert its fork arm 6 into the bottom of the pallet, and then the L-shaped bracket 5 and the lifting frame 3 are driven to rise by controlling the hydraulic rod 4 to rise upward. At this time, the two sets of fork arms 6 can move upward synchronously to realize the lifting operation of the pallet and the goods.

[0027] refer to Figure 1-2 A pressure rod 9 is installed vertically and movably in the center of the limit seat 7, an axle seat 11 is fixedly installed at the bottom of the pressure rod 9, connecting rods 13 are movably installed at both ends of the axle seat 11 through the rotating shaft A12, and movable plates 8 are symmetrically and movably installed on both sides of the limit seat 7. The other end of the connecting rod 13 is movably connected to the movable plate 8 through the rotating shaft B14. A fixed seat 15 is fixedly installed on the outer side of the top of the movable plate 8, and movable rods 16 are movably penetrated on the upper and lower sides of the fixed seat 15. A limited clamping plate 17 is fixedly installed on the inner end of the movable rod 16 and located above the movable plate 8;

[0028] Specifically, the shaft seat 11 and the movable plate 8 are movably connected through a connecting rod 13, and the connecting rod 13 is obliquely arranged between the shaft seat 11 and the movable plate 8. The obliquely arranged connecting rod 13 ensures that the shaft seat 11 can smoothly drive the movable plate 8 to move horizontally when it moves vertically;

[0029] Among them, a return spring 19 is sleeved under the pressure rod 9, the top of the return spring 19 is fixedly connected to the bottom of the limit seat 7, and the bottom of the return spring 19 is fixedly connected to the shaft seat 11. The return spring 19 provides an upward pull. In the default state, the pressure rod 9 can be pulled out above the limit seat 7 by the return spring 19;

[0030] Secondly, a clamping spring 18 is sleeved on one side of the movable rod 16 and between the fixed seat 15 and the limiting clamping plate 17. The clamping spring 18 can provide a lateral thrust. In the default state, the spring 18 can push the limiting clamping plate 17 to apply pressure inwards;

[0031] In addition, pulleys 20 are movably installed at both ends of the limiting seat 7 and located at the upper and lower sides of the movable plate 8, respectively. The movable plate 8 moves laterally inside the pulleys 20, thereby greatly reducing the friction force when the movable plate 8 moves horizontally, and preventing the movable plate 8 from getting stuck when moving;

[0032] In this embodiment, when the fork arm 6 is placed under the pallet and lifted up, its pressure rod 9 can be subjected to downward pressure and move downward, at which time it can drive the connecting rod 13 movably connected at both ends of the axle seat 11 to move downward, and when the connecting rod 13 moves downward, it can pull the movable plates 8 on both sides located in the limit seats 7 to move inward synchronously, at which time it can drive the fixed seats 15 on both sides to move inward, and the two sets of limit clamps 17 can first contact the two sides of the pallet at this time, as the movable plates 8 continue to move, their clamping springs 18 will be squeezed, and after being squeezed, the clamping springs 18 can provide a certain thrust to push the limit clamps 17 to clamp on both sides of the pallet, so that the two sides can be limited when the pallet is lifted, thereby improving the stability and reliability of the lifting operation.

[0033] Working principle: First, the staff can push the equipment to the appropriate position, and then use the hydraulic rod 4 to drive the pallet to rise up after inserting the fork arm 6 into the bottom of the pallet to realize the lifting operation. In this process, the pressure rod 9 contacts the bottom of the pallet and is squeezed to move downward, while driving the connecting rods 13 on both sides to tilt downward. At this time, the two groups of connecting rods 13 can drive the two groups of movable plates 8 to move inward synchronously. At the same time, the fixed seats 15 and the limiting clamps 17 on both sides can move toward one side of the pallet at the same time. After the limiting clamps 17 contact the outer wall of the pallet, the clamping springs 18 can be compressed and deformed. At this time, the clamping springs 18 can provide moving thrust for the limiting clamps 17, so that the limiting clamps 17 can be stably clamped on both sides of the pallet, so that the pallet can remain stable when it is lifted again, preventing tilting, shaking and falling, greatly improving the safety and reliability of the lifting operation.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pallet lifting mechanism, characterized in that: It comprises a frame (1), a fork arm (6) and a limit seat (7); A bracket (2) is fixedly mounted on the top of the vehicle frame (1); a lifting frame (3) is movably mounted on the front side of the bracket (2); fork arms (6) are symmetrically mounted on both sides of the front end of the lifting frame (3); and the limit seat (7) is fixedly mounted on the bottom of the two sets of fork arms (6); A pressure rod (9) is vertically and movably installed in the center of the limit seat (7), an axle seat (11) is fixedly installed at the bottom of the pressure rod (9), connecting rods (13) are movably installed at both ends of the axle seat (11) through a rotating shaft A (12), movable plates (8) are symmetrically and movably installed on both sides of the limit seat (7), the other end of the connecting rod (13) is movably connected to the movable plate (8) through a rotating shaft B (14), a fixed seat (15) is fixedly installed on the outer side of the top of the movable plate (8), and movable rods (16) are movably penetrated on the upper and lower sides of the fixed seat (15), and a limiting clamping plate (17) is fixedly installed on the inner end of the movable rod (16) and located above the movable plate (8).

2. A pallet lifting mechanism according to claim 1, characterized in that: A return spring (19) is sleeved below the pressure rod (9), the top of the return spring (19) is fixedly connected to the bottom of the limit seat (7), and the bottom of the return spring (19) is fixedly connected to the shaft seat (11).

3. A pallet lifting mechanism according to claim 1, characterized in that: A clamping spring (18) is sleeved on one side of the movable rod (16) and is located between the fixing seat (15) and the limiting clamping plate (17).

4. A pallet lifting mechanism according to claim 1, characterized in that: Pulleys (20) are movably mounted at both ends of the limiting seat (7) and are respectively located on the upper and lower sides of the movable plate (8).

5. A pallet lifting mechanism according to claim 1, characterized in that: A hydraulic rod (4) is fixedly mounted on the rear side of the top of the vehicle frame (1), an L-shaped bracket (5) is fixedly mounted on the top of the hydraulic rod (4), and the bottom of the L-shaped bracket (5) is fixedly connected to the lifting frame (3).

6. A pallet lifting mechanism according to claim 1, characterized in that: Moving wheels (10) are fixedly mounted at the four corners of the bottom of the frame (1).

7. A pallet lifting mechanism according to claim 1, characterized in that: The shaft seat (11) and the movable plate (8) are movably connected via a connecting rod (13), and the connecting rod (13) is obliquely arranged between the shaft seat (11) and the movable plate (8).

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