Lifting platform with height compensation

Abstract

The utility model discloses a lifting platform with height compensation effect, including base and extension and lowering plate, both sides side walls of base are all rotatively connected with two groups of rotation plate, and the frame body is connected with extension and lowering plate through the shearing type cross mechanism, both sides side walls of base are all seted up with two groups of connecting groove, and the connecting groove all are installed with the drive mechanism of drive rotation plate rotation.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a lifting platform with height compensation function. Background Technology

[0002] In many fields such as modern industry, logistics, and construction, lifting platforms play an indispensable role as important material handling and personnel operation auxiliary equipment.

[0003] Traditional lifting platforms typically employ a single lifting structure, which presents numerous limitations in practical use. When the lifting platform is on uneven ground, its bottom is difficult to keep level, which not only affects the stability and safety of the lifting platform but may also cause materials to tilt, fall, or even endanger the lives of operators. Therefore, it is necessary to propose a lifting platform with height compensation function to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a lifting platform with height compensation function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lifting platform with height compensation includes a base and a telescopic plate. Two sets of rotating plates are rotatably connected to both side walls of the base. Hydraulic cylinders are fixedly connected to the ends of both sets of rotating plates. Pads are fixedly connected to the ends of the telescopic sections of the hydraulic cylinders. Frames are fixedly connected to the upper surface of the base and the lower surface of the telescopic plate. The frames are connected to the telescopic plate through a scissor-type cross mechanism. Two sets of connecting grooves are provided on both side walls of the base. A drive mechanism for driving the rotating plates to rotate is installed in each connecting groove.

[0007] Preferably, the driving mechanism includes a threaded rod II rotatably connected in the connecting groove, a movable block being threadedly connected to the threaded section of the threaded rod II, a connecting plate being rotatably connected to the outer wall of the movable block, and the other end of the connecting plate being rotatably connected to the rotating plate.

[0008] Preferably, the scissor-type cross mechanism has multiple sets of connecting rod 1 and connecting rod 2, which are arranged in pairs and have a common hinge point. The connecting rod 2 close to the frame is rotatably connected to its inner wall. The inner wall of the frame is provided with a sliding groove. The outer wall of the connecting rod 1 close to the frame is rotatably connected to a sliding rod, which is slidably connected in the sliding groove.

[0009] Preferably, a side plate is fixedly connected to the end face of the base, and a threaded rod is rotatably connected to the outer wall of the side plate. A slider is threadedly connected to the threaded section of the threaded rod, and two sets of connecting rods are rotatably connected to the outer wall of the slider. The ends of the two sets of connecting rods are rotatably connected to their adjacent connecting rods and are coaxial with the slider.

[0010] Preferably, two sets of limiting rods are fixedly connected to the outer wall of the side plate, the slider is slidably connected to the outer wall of the two sets of limiting rods, a limiting block is fixedly connected to one end of the threaded rod, and the radius of the limiting block is larger than the radius of the threaded rod, and one side of the outer wall of the moving block is in contact with the inner wall of the slide groove.

[0011] Preferably, the threaded rod II located on one side is coaxially fixedly connected, two sets of motor I are fixedly connected to the side wall of the base, and motor II is fixedly connected to the outer wall of the side plate. Motor I and motor II are coaxially fixedly connected to threaded rod II and threaded rod II, respectively.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through the synergistic action of the rotating plate, hydraulic cylinder and pad, can detect the ground height difference in real time during the placement or operation of the lifting platform, and dynamically adjust the support height of each pad through the independent extension and retraction of the hydraulic cylinder, so as to achieve adaptive fit between the base and the ground and realize the height compensation mechanism. This height compensation mechanism not only eliminates the initial leveling deviation, but also continuously corrects the height deviation caused by ground subsidence or load changes during the lifting process, ensuring that the lifting plate is always in a horizontal state, and solving the tilting problem of traditional platforms caused by uneven terrain.

[0014] 2. This utility model utilizes the sliding constraint of the slide groove and slide rod in the scissor cross mechanism, combined with the synchronous drive design of the threaded rod and the slider, and at the same time, through the real-time dynamic adjustment of the motor pair of rotating plates, to achieve continuous horizontal compensation of the base during the lifting process, thus doubly ensuring the verticality and stability of the platform's lifting trajectory. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a lifting platform with height compensation function proposed in this utility model;

[0016] Figure 2 for Figure 1 Structural diagram.

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of components such as the threaded rod, connecting plate, and rotating plate.

[0018] In the diagram: 1. Base; 2. Extension plate; 3. Frame; 4. Slide groove; 5. Slide rod; 6. Link 1; 7. Link 2; 8. Motor 1; 9. Motor 2; 10. Turning plate; 11. Hydraulic cylinder; 12. Pad plate; 13. Caster wheel; 14. Threaded rod 1; 15. Limiting rod; 16. Sliding block; 17. Connecting groove; 18. Limiting block; 19. Threaded rod 2; 20. Moving block; 21. Connecting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 A lifting platform with height compensation function includes a base 1 and a lifting plate 2. Two sets of rotating plates 10 are rotatably connected to both side walls of the base 1. Hydraulic cylinders 11 are fixedly connected to the ends of both sets of rotating plates 10. Pads 12 are fixedly connected to the ends of the extension sections of the hydraulic cylinders 11. Frames 3 are fixedly connected to the upper end face of the base 1 and the lower end face of the lifting plate 2. Frames 3 are connected to the lifting plate 2 through a scissor-type cross mechanism. Two sets of connecting grooves 17 are opened on both side walls of the base 1. A drive mechanism for driving the rotating plates 10 to rotate is installed in each connecting groove 17.

[0021] Furthermore, the linkage design between the rotating plate 10 and the hydraulic cylinder 11 allows the base 1 to quickly adapt to the terrain tilt by independently adjusting the height difference between the two side pads 12 when the base 1 contacts uneven ground, thus avoiding the overall tilting of the lifting plate 2 due to uneven ground and improving operational safety.

[0022] The drive mechanism includes a threaded rod 19 rotatably connected in the connecting groove 17, a movable block 20 threadedly connected to the threaded section of the threaded rod 19, a connecting plate 21 rotatably connected to the outer wall of the movable block 20, and the other end of the connecting plate 21 rotatably connected to the rotating plate 10.

[0023] Furthermore, through the transmission cooperation between the threaded rod 19 and the moving block 20, the rotation angle of the rotating plate 10 can be precisely controlled, thereby adjusting the position of the pad 12 and achieving adaptive contact between the base 1 and the ground.

[0024] The scissor-type cross mechanism has multiple sets of connecting rods 1 and 6 and connecting rods 2 and 7. The multiple sets of connecting rods 1 and 6 and connecting rods 2 and 7 are arranged in pairs and have a common hinge point. The connecting rods 2 and 7 close to the frame 3 are all rotatably connected to its inner wall. The inner wall of the frame 3 is provided with a sliding groove 4. The outer wall of the connecting rods 1 and 6 close to the frame 3 is rotatably connected to a sliding rod 5. The sliding rod 5 is slidably connected in the sliding groove 4.

[0025] Furthermore, the sliding engagement between the slide groove 4 and the slide rod 5 can constrain the movement trajectory of the scissor cross mechanism, prevent the first link 6 and the second link 7 from shifting laterally during the lifting process, and ensure that the lifting plate 2 always maintains vertical up-and-down movement.

[0026] A side plate is fixedly connected to the end face of the base 1. A threaded rod 14 is rotatably connected to the outer wall of the side plate. A slider 16 is threadedly connected to the threaded section of the threaded rod 14. Two sets of connecting rods are rotatably connected to the outer wall of the slider 16. The ends of the two sets of connecting rods are rotatably connected to the adjacent connecting rod 6 and are coaxial with the slider 5.

[0027] Furthermore, the linkage design of the threaded rod 14 and the slider 16 can synchronously control the unfolding angle of multiple scissor cross mechanisms through a single drive source, reducing the problem of asynchronous lifting caused by multiple power sources.

[0028] Two sets of limiting rods 15 are fixedly connected to the outer wall of the side plate. The slider 16 is slidably connected to the outer wall of the two sets of limiting rods 15. The end of the threaded rod 14 is fixedly connected to a limiting block 18, and the radius is larger than the radius of the threaded rod 14. The outer wall of one side of the moving block 20 is in contact with the inner wall of the slide groove 4.

[0029] Furthermore, the dual limiting structure of the limiting rod 15 and the limiting block 18 can prevent the slider 16 and the moving block 20 from disengaging at extreme positions.

[0030] The threaded rod 19 on one side is coaxially fixedly connected. Two sets of motors 8 are fixedly connected to the side wall of the base 1, and motor 9 is fixedly connected to the outer wall of the side plate. Motors 8 and 9 are coaxially fixedly connected to threaded rod 19 and threaded rod 14 respectively.

[0031] In this invention, the device is used as follows: When the lifting platform is placed on the ground, the rotating plates 10 on both sides of the base 1 are in their initial unfolded state, the hydraulic cylinders 11 are not activated, and the pad 12 is in contact with the ground. If the ground is tilted or uneven, the operator starts the motor 8, which drives the coaxially connected threaded rod 19 to rotate, causing the moving block 20 to move axially along the threaded rod 19. Through the connecting plate 21, the rotating plate 10 is pushed to rotate around the side wall of the base 1, thereby adjusting the tilt angle of the hydraulic cylinders 11 on both sides. At this time, the hydraulic cylinders 11 independently extend and retract their extension sections according to the height difference of the ground, so that the pad 12 is in close contact with the ground, quickly compensating for the horizontal deviation of the base 1, avoiding the initial tilt of the lifting plate 2 due to the tilt of the base, and ensuring the stability of the platform before lifting.

[0032] After the base 1 is leveled, the operator starts motor 9, driving threaded rod 14 to rotate, which in turn causes slider 16 to slide axially along limit rod 15. Slider 16, through two sets of connecting rods on its outer wall, pushes adjacent connecting rod 6 to rotate around slide rod 5, thereby driving connecting rod 6 and connecting rod 7 of the scissor-cross mechanism to expand or contract synchronously. During this process, slide rod 5 slides along the groove 4 of frame 3, constraining the movement trajectory of the scissor-cross mechanism, preventing lateral displacement of connecting rod 6 and connecting rod 7, ensuring that the lifting plate 2 only rises and falls smoothly in the vertical direction, and avoiding platform tilting or shaking due to structural deformation.

[0033] During the lifting process, if the ground conditions change, such as local collapse or uneven load, the motor 8 can adjust the rotation angle of the threaded rod 19 in real time. Through the linkage between the moving block 20 and the connecting plate 21, the rotation position of the rotating plate 10 is dynamically corrected, so that the hydraulic cylinder 11 can finely adjust the height of the pad 12 again to compensate for the horizontal state of the base 1.

[0034] With the independent control of motor 8 and motor 9, the lifting platform can simultaneously perform adaptive leveling of base 1 and vertical lifting of lifting plate 2. Operators only need to control the start, stop and turn of the motors to achieve rapid leveling, precise lifting and dynamic height compensation of the platform, reduce the risk of material slippage or equipment tipping due to platform tilt, and improve work efficiency and safety.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lifting platform with height compensation function, comprising a base (1) and a lowering plate (2), characterized in that, The base (1) has two sets of rotating plates (10) rotatably connected to both side walls. The ends of the two sets of rotating plates (10) are fixedly connected to hydraulic cylinders (11). The ends of the extension sections of the hydraulic cylinders (11) are fixedly connected to pads (12). The upper end face of the base (1) and the lower end face of the extension plate (2) are fixedly connected to frames (3). The frames (3) are connected to the extension plate (2) through a scissor cross mechanism. The base (1) has two sets of connecting grooves (17) on both side walls. The connecting grooves (17) are equipped with driving mechanisms that drive the rotating plates (10) to rotate.

2. The lifting platform with height compensation function according to claim 1, characterized in that, The driving mechanism includes a threaded rod (19) rotatably connected in the connecting groove (17), a moving block (20) is threadedly connected to the threaded section of the threaded rod (19), a connecting plate (21) is rotatably connected to the outer wall of the moving block (20), and the other end of the connecting plate (21) is rotatably connected to the rotating plate (10).

3. A lifting platform with height compensation function according to claim 2, characterized in that, The scissor-type cross mechanism has multiple sets of connecting rods 1 (6) and connecting rods 2 (7). The multiple sets of connecting rods 1 (6) and connecting rods 2 (7) are arranged in pairs and have a common hinge point. The connecting rods 2 (7) close to the frame (3) are rotatably connected to its inner wall. The inner wall of the frame (3) is provided with a sliding groove (4). The outer wall of the connecting rods 1 (6) close to the frame (3) is rotatably connected to a sliding rod (5). The sliding rod (5) is slidably connected in the sliding groove (4).

4. A lifting platform with height compensation function according to claim 3, characterized in that, The base (1) is fixedly connected to a side plate. The outer wall of the side plate is rotatably connected to a threaded rod (14). The threaded section of the threaded rod (14) is threadedly connected to a slider (16). The outer wall of the slider (16) is rotatably connected to two sets of connecting rods. The ends of the two sets of connecting rods are rotatably connected to the adjacent connecting rod (6) and are coaxial with the slider (5).

5. A lifting platform with height compensation function according to claim 4, characterized in that, Two sets of limiting rods (15) are fixedly connected to the outer wall of the side plate. The slider (16) is slidably connected to the outer wall of the two sets of limiting rods (15). A limiting block (18) is fixedly connected to the end of the threaded rod (14), and its radius is larger than that of the threaded rod (14). The outer wall of one side of the moving block (20) is in contact with the inner wall of the groove (4).

6. A lifting platform with height compensation function according to claim 5, characterized in that, The threaded rod 2 (19) located on one side is coaxially fixedly connected, and two sets of motor 1 (8) are fixedly connected to the side wall of the base (1). Motor 2 (9) is fixedly connected to the outer wall of the side plate. Motor 1 (8) and motor 2 (9) are coaxially fixedly connected to threaded rod 2 (19) and threaded rod 1 (14) respectively.

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