Hydraulic lifting equipment

Abstract

The utility model discloses hydraulic lifting equipment, which relates to the technical field of hydraulic equipment, and comprises a hydraulic adjusting plate, a support component and a protective component, the hydraulic adjusting plate drives a support plate to lift through a plurality of groups of hydraulic cylinders, and the support component adjusts a support angle through a linkage mechanism of a servo motor and a screw rod so as to support the support plate. The protection assembly comprises a corrugated folding protection sleeve used for preventing objects from entering when the supporting plate ascends and descends. According to the hydraulic lifting equipment, by introducing the screw transmission mechanism driven by the servo motor and the intelligent linkage design of the corrugated folding protective sleeve, the stability and safety of the lifting process of the supporting plate are improved, meanwhile, the interior of the equipment is effectively protected, the maintenance cost is reduced, and the service life of the equipment is prolonged. And the overall operation efficiency and the equipment performance are improved. Due to the beneficial effects, the equipment has a wider application prospect and higher market competitiveness in the field of material carrying.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic lifting device. Background Art

[0002] Hydraulic lifts, as an important material handling tool, are widely used in warehouses, factories, and auto repair facilities. They are used to lift cargo from the ground to a certain height, facilitating loading and unloading operations by forklifts and other handling vehicles. One existing hydraulic lift features an ingenious design, comprising a base 11, a pallet 12, and folding plates A13 and B14 with an X-shaped exterior. This design achieves the lifting and lowering function of the pallet 12 through an ingenious mechanical structure.

[0003] Specifically, the midsections of folding plates A13 and B14 are pivotally connected via a pivot 15, enabling the two plates to rotate relative to each other around the pivot. Furthermore, the rear ends of folding plates A13 and B14 are connected to the base 11 and support plate 12, respectively, via pivoting connectors, ensuring the stability and flexibility of the entire structure. To drive the rotation of the folding plates, multiple sets of hydraulic cylinders 16 are incorporated within the equipment. These cylinders extend or contract to propel folding plates A13 and B14 around the pivot 15, thereby changing the angle between them and raising or lowering the support plate 12.

[0004] During the raising of pallet 12, the front ends of folding plate A 13 and folding plate B 14 maintain contact with base 11 and pallet 12, respectively, via two sets of rollers 17. As the folding plates rotate, they move toward the rear. This design is intended to reduce friction and wear, improving the durability and smooth operation of the equipment. However, due to this design, when pallet 12 is raised, the rollers 17 at the front ends of the folding plates move toward the rear, reducing the supporting force of pallet 12 during the raising process.

[0005] In practice, when a forklift or other transport vehicle carries cargo past the front end of pallet 12, insufficient pallet support can cause the cargo to wobble, tilt, or even slip. This safety hazard is particularly pronounced when the cargo is heavy or irregularly shaped. Furthermore, the limited contact area between roller 17, base 11, and pallet 12, and the potential for some bouncing and wobbling during rotation, further increase the pallet's instability and safety risks during the lifting process. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention provides a hydraulic lifting device that solves the problems raised by the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic lifting device, including a hydraulic adjustment plate, a support assembly and a protective assembly, wherein the hydraulic adjustment plate drives the pallet to rise and fall through multiple groups of hydraulic cylinders, the support assembly adjusts the support angle through a linkage mechanism of a servo motor and a screw to support the pallet, and the protective assembly includes a corrugated folding sheath for preventing objects from entering when the pallet is raised or lowered.

[0008] Furthermore, the hydraulic adjustment plate includes a base and a support plate, and a folding plate A and a folding plate B are arranged between the base and the support plate. Their middle sections are connected by a rotating shaft, and the rear ends are respectively rotatably connected to the base and the support plate. Multiple groups of hydraulic cylinders are arranged between the folding plate A and the folding plate B, which are used to drive their rotation to realize the lifting and lowering of the support plate.

[0009] Furthermore, the support components are arranged on both sides of the hydraulic adjustment plate, and each support component includes a C-shaped frame, a servo motor, a screw, a movable seat, a connecting plate A, a rotating frame A, a support plate, a rotating frame B and a connecting plate B. The servo motor drives the screw to rotate, so that the movable seat moves on the guide rail, and then the linkage mechanism of the connecting plate A, the rotating frame A, the support plate, the rotating frame B and the connecting plate B changes the angle between the support plate and the C-shaped frame to support the pallet.

[0010] Furthermore, the protective component is arranged at the bottom of the hydraulic adjustment plate and located outside the two groups of support components, including a frame and a corrugated folding cover. The side of the frame is connected to the side of the U-shaped frame, and the top of the corrugated folding cover is connected to the bottom edge of the support plate. When the support plate is raised or lowered, the corrugated folding cover is expanded or folded accordingly.

[0011] Furthermore, the outer front ends of the folding plate A and the folding plate B are rotatably connected to rollers, and the rollers are respectively fitted with the base and the supporting plate.

[0012] Furthermore, the outside of the connecting plate A is rotatably connected to the rotating frame A, the outside of the rotating frame A is connected to the support plate, the free end of the support plate is connected to the rotating frame B, the inside of the rotating frame B is rotatably connected to the connecting plate B, and the top of the connecting plate B is connected to one side of the support plate.

[0013] Furthermore, the multiple groups of hydraulic cylinders are evenly distributed between the folding plate A and the folding plate B, and are used to synchronously drive the folding plate A and the folding plate B to rotate around the rotating shaft.

[0014] Furthermore, the frame and the bottom of the corrugated folded cover are kept at a certain distance from the base to avoid contact with the ground or other obstacles.

[0015] Furthermore, the servo motor is a reversible motor that can drive the screw to rotate in a forward or reverse direction, thereby achieving forward or backward movement of the moving seat.

[0016] Furthermore, the side surfaces of the U-shaped frame are fixedly connected to the side surfaces of the base to ensure the stability of the support assembly.

[0017] The utility model provides a hydraulic lifting device. Compared with the existing technology, it has the following advantages:

[0018] The utility model provides a hydraulic lifting device. Compared with the existing technology, it has the following advantages:

[0019] 1. By using a servo motor to drive the screw in forward or reverse rotation, the moving base achieves precise and smooth movement on the guide rail. When the moving base moves forward, the mechanical linkage of connecting plate A, rotating frame A, rotating frame B, and connecting plate B increases the angle between the support plate and the C-shaped frame, providing solid support for the front end of the raised pallet. Conversely, when the moving base moves backward, these components work together to reduce the angle between the support plate and the C-shaped frame, closely following the lowering of the pallet. This design not only ensures the stability of the pallet during the lifting process, but also effectively prevents cargo from swaying or slipping due to insufficient support force, significantly improving the safety and reliability of operations.

[0020] 2. The lifting and lowering of the pallet is seamlessly linked to the deployment and storage of the corrugated folding sheath. When the pallet is raised, its top simultaneously drives the corrugated folding sheath upward, automatically deploying the sheath. This effectively prevents foreign objects from entering the hydraulic adjustment plate and support assembly, preventing equipment failure or performance degradation caused by foreign object interference. Similarly, when the pallet is lowered, the corrugated folding sheath folds and stores, maintaining the equipment's neat appearance while avoiding unnecessary space occupation. This intelligent design not only simplifies the operation process but also significantly improves equipment maintenance and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0023] Figure 3 This is a structural diagram of the hydraulic adjustment plate of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the middle support assembly of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of the middle protection component of the present invention.

[0026] In the figure: 1. Hydraulic adjustment plate; 11. Base; 12. Support plate; 13. Folding plate A; 14. Folding plate B; 15. Rotating shaft; 16. Hydraulic cylinder; 17. Roller; 2. Support assembly; 21. U-shaped frame; 22. Servo motor; 23. Screw; 24. Moving seat; 25. Connecting plate A; 26. Rotating frame A; 27. Support plate; 28. Rotating frame B; 29. Connecting plate B; 210. Guide rail; 3. Protective assembly; 31. Frame; 32. Corrugated folding sheath. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-5 The present invention provides a technical solution: a hydraulic lifting device, mainly comprising three parts: a hydraulic adjustment plate 1, a support assembly 2 and a protective assembly 3. The hydraulic adjustment plate 1 is the core component, responsible for realizing the lifting and lowering functions of the support plate 12. The support assembly 2 is responsible for providing stable support when the support plate 12 is raised to ensure the safety of the equipment. The protective assembly 3 is used to prevent external objects from entering the interior of the equipment when the support plate 12 is raised, thereby affecting the lifting effect.

[0029] The hydraulic adjustment plate 1 consists of a base 11, a support plate 12, a folding plate A13, a folding plate B14, a rotating shaft 15, a hydraulic cylinder 16 and a roller 17. The base 11 and the support plate 12 are connected by the folding plate A13 and the folding plate B14. The two folding plates are externally X-shaped, with the middle section connected by the rotating shaft 15, and the rear ends are rotatably connected to the base 11 and the support plate 12 respectively. Multiple groups of hydraulic cylinders 16 are arranged between the folding plate A13 and the folding plate B14, and the angle between the two folding plates is changed by stretching or contracting, thereby realizing the raising or lowering of the support plate 12. The rollers 17 are rotatably connected to the front ends of the folding plate A13 and the folding plate B14 respectively, and fit with the base 11 and the support plate 12 to reduce friction and provide a smooth lifting experience;

[0030] The support assembly 2 includes a U-shaped frame 21, a servo motor 22, a screw 23, a movable seat 24, a connecting plate A25, a rotating frame A26, a support plate 27, a rotating frame B28, and a connecting plate B29. The U-shaped frame 21 is fixed to both sides of the hydraulic adjustment plate 1, and the servo motor 22 is installed at the rear end thereof. The output end of the servo motor 22 is connected to the screw 23, and the external thread of the screw 23 is connected to the movable seat 24. The movable seat 24 slides on the outside of the guide rail 210, which is mounted on the inner bottom end of the U-shaped frame 21. When the servo motor 22 drives the screw 23 to rotate forward or reverse, the movable seat 24 moves forward or backward along the guide rail 210.

[0031] The top of the movable base 24 is connected to a connecting plate A25, the outer portion of which pivots to a rotating frame A26. The outer portion of the rotating frame A26 is connected to a support plate 27, the free end of which is connected to a rotating frame B28, and the inner portion of the rotating frame B28 pivots to a connecting plate B29. Thus, when the movable base 24 moves, the angle between the support plate 27 and the U-shaped frame 21 changes due to the coordinated action of the connecting plate A25, rotating frame A26, rotating frame B28, and connecting plate B29, thereby supporting the front end of the pallet 12 after it is raised or following its descent.

[0032] The protective assembly 3 includes a frame 31 and a corrugated folding sheath 32. The sides of the frame 31 are connected to the sides of the U-shaped frame 21, and the inner bottom is connected to the corrugated folding sheath 32. The top of the corrugated folding sheath 32 is connected to the bottom edge of the support plate 12. When the support plate 12 is raised, the top of the corrugated folding sheath 32 moves upward, thereby expanding the corrugated folding sheath 32 and preventing foreign objects from entering the hydraulic adjustment plate 1 and support assembly 2. When the support plate 12 is lowered, the corrugated folding sheath 32 folds and retracts.

[0033] When in use, the angle between the folding plate A13 and the folding plate B14 is first changed by extending or contracting multiple groups of hydraulic cylinders 16, thereby achieving the raising or lowering of the pallet 12. Then, the servo motor 22 drives the screw 23 to rotate forward or reverse, so that the movable seat 24 moves forward or backward outside the guide rail 210. When the movable seat 24 moves forward, through the linkage action of the connecting plate A25, the rotating frame A26, the rotating frame B28 and the connecting plate B29, the angle between the support plate 27 and the C-shaped frame 21 increases, supporting the front end of the pallet 12 after it is raised. When the movable seat 24 moves backward, the angle between the support plate 27 and the C-shaped frame 21 decreases, following the lowering of the pallet 12. At the same time, the corrugated folding sheath 32 will expand and fold as the pallet 12 is raised and lowered, preventing external objects from entering the interior of the equipment and affecting the lifting effect.

Claims

1. A hydraulic lifting device, characterized in that: The invention comprises a hydraulic adjustment plate (1), a support assembly (2) and a protection assembly (3), wherein the hydraulic adjustment plate (1) drives the support plate (12) to rise and fall through a plurality of hydraulic cylinders (16), the support assembly (2) adjusts the support angle through a linkage mechanism of a servo motor (22) and a screw (23) to support the support plate (12), and the protection assembly (3) comprises a corrugated folding sheath (32) for preventing objects from entering when the support plate (12) is raised and lowered.

2. The hydraulic lifting device according to claim 1, characterized in that: The hydraulic adjustment plate (1) comprises a base (11) and a support plate (12), wherein a folding plate A (13) and a folding plate B (14) are provided between the base (11) and the support plate (12), wherein the middle sections of the folding plate A (13) and the folding plate B (14) are connected via a rotating shaft (15), and the rear ends thereof are rotatably connected to the base (11) and the support plate (12), respectively. A plurality of hydraulic cylinders (16) are provided between the folding plate A (13) and the folding plate B (14) for driving the rotation thereof to realize the lifting and lowering of the support plate (12).

3. The hydraulic lifting device according to claim 1, characterized in that: The support assembly (2) is arranged on both sides of the hydraulic adjustment plate (1). Each support assembly (2) includes a U-shaped frame (21), a servo motor (22), a screw (23), a movable seat (24), a connecting plate A (25), a rotating frame A (26), a support plate (27), a rotating frame B (28) and a connecting plate B (29). The servo motor (22) drives the screw (23) to rotate, so that the movable seat (24) moves on the guide rail (210), and then the angle between the support plate (27) and the U-shaped frame (21) is changed through the linkage mechanism of the connecting plate A (25), the rotating frame A (26), the support plate (27), the rotating frame B (28) and the connecting plate B (29) to support the support plate (12).

4. The hydraulic lifting device according to claim 1, characterized in that: The protective assembly (3) is arranged at the bottom of the hydraulic adjustment plate (1) and outside the two groups of support assemblies (2), and includes a frame (31) and a corrugated folding sheath (32). The side of the frame (31) is connected to the side of the U-shaped frame (21), and the top of the corrugated folding sheath (32) is connected to the bottom edge of the support plate (12). When the support plate (12) is raised or lowered, the corrugated folding sheath (32) is unfolded or folded accordingly.

5. The hydraulic lifting device according to claim 2, characterized in that: The outer front ends of the folding plate A (13) and the folding plate B (14) are both rotatably connected to rollers (17), and the rollers (17) are respectively fitted with the base (11) and the supporting plate (12).

6. The hydraulic lifting device according to claim 3, characterized in that: The outer portion of the connecting plate A (25) is rotatably connected to the rotating frame A (26), the outer portion of the rotating frame A (26) is connected to the supporting plate (27), the free end of the supporting plate (27) is connected to the rotating frame B (28), the inner portion of the rotating frame B (28) is rotatably connected to the connecting plate B (29), and the top end of the connecting plate B (29) is connected to one side of the supporting plate (12).

7. The hydraulic lifting device according to claim 2, characterized in that: The multiple groups of hydraulic cylinders (16) are evenly distributed between the folding plate A (13) and the folding plate B (14), and are used to synchronously drive the folding plate A (13) and the folding plate B (14) to rotate around the rotating shaft (15).

8. The hydraulic lifting device according to claim 4, characterized in that: The bottoms of the frame (31) and the corrugated folded sheath (32) are kept at a certain distance from the base (11) to avoid contact with the ground or other obstacles.

9. The hydraulic lifting device according to claim 3, characterized in that: The servo motor (22) is a reversible motor capable of driving the screw (23) to rotate in a forward or reverse direction, thereby achieving forward or backward movement of the movable seat (24).

10. The hydraulic lifting device according to claim 3, characterized in that: The side of the U-shaped frame (21) is fixedly connected to the side of the base (11), ensuring the stability of the support assembly (2).

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