Anti-tilt fixed lifting platform

Abstract

The utility model discloses a kind of anti-overturning fixed lifting platform, including base, driving mechanism and lateral support mechanism;Base: its upper end is provided with workbench, the upper surface of base and the lower surface of workbench are symmetrically distributed with rotation seat fixedly connected left and right, the upper surface of base and the lower surface of workbench are symmetrically distributed with four rotation seats between front and rear same side, and all be provided with scissor bracing connecting rod between them;Driving mechanism: it is respectively set in the left and right ends of base, driving mechanism is respectively cooperatively arranged with the connecting rod in the inner side of the lower end of adjacent scissor bracing connecting rod;Lateral support mechanism: it includes fixed plate, support frame, support column and support disc, the upper surface four corners of base are respectively symmetrically fixedly connected with fixed plate, and the opposite outer side of two fixed plates adjacent left and right are fixedly connected with support frame, this anti-overturning fixed lifting platform is lifted by two scissor bracing structures in front and back two sides, and increase side support, reduce the possibility of overturning.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, specifically to a fixed lifting platform that prevents tipping. Background Technology

[0002] A lifting platform is a mechanical device used for vertically transporting personnel or goods, widely used in various fields such as industry, logistics, construction, warehousing, commerce, and high-altitude operations maintenance. Its core function is to overcome height differences, providing a safe and efficient lifting solution. Lifting platforms significantly improve operational efficiency and safety. In manufacturing, they are used for material handling and equipment maintenance on production lines; in logistics and warehousing, they are used for loading and unloading goods and accessing high-level shelves; in the construction industry, they are used for interior and exterior decoration, installation, and equipment maintenance; and in shopping malls, stations, and other locations, they are used for equipment maintenance and cleaning.

[0003] Most lifting platforms use a scissor brace structure to achieve lifting. The lower end of the scissor brace structure is fixed in a rotating position on one side, while the other side slides close to the fixed end to achieve lifting. However, the sliding end moves to one side, resulting in uneven distribution of support points. When subjected to eccentric loads, the lateral support range is limited, which can easily create a "lever effect" and cause overturning. To address this, we propose an anti-overturning fixed lifting platform. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a fixed lifting platform that prevents tipping. The lifting is achieved by two scissor bracing structures on the front and rear sides, and the side support is increased to reduce the possibility of tipping, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed lifting platform with anti-tipping features, comprising a base, a drive mechanism, and a lateral support mechanism;

[0006] Base: A worktable is provided on its upper end. Rotary seats that are symmetrically distributed on the left and right sides are fixedly connected to the upper surface of the base and the lower surface of the worktable. Scissor bracing rods are provided between the four rotating seats on the same side of the front and back of the upper surface of the base and the lower surface of the worktable.

[0007] Drive mechanism: It is respectively set at the left and right ends of the base, and the drive mechanism is respectively set to cooperate with the connecting rod on the inner side of the lower end of the adjacent scissor brace connecting rod;

[0008] Lateral support mechanism: It includes a fixed plate, a support frame, a column, and a support plate. The fixed plates are symmetrically fixed to the four corners of the upper surface of the base. The outer sides of the two adjacent fixed plates are fixedly connected to the support frame. The end of the support frame away from the adjacent fixed plate is threaded to the column. The lower end of the column is fixedly connected to the support plate. Lifting is achieved through two scissor bracing structures on the front and rear sides, and lateral support is increased to reduce the possibility of tipping over.

[0009] Furthermore, it also includes a controller, which is located at the top of the workbench and whose input is electrically connected to an external power source to control electrical appliances.

[0010] Furthermore, the driving mechanism includes a slide and a guide rail. The guide rail is symmetrically fixed to the front and rear ends of the upper surface of the base and the front and rear ends of the lower surface of the worktable. The upper end of the guide rail on the base and the lower end of the guide rail on the worktable are slidably connected to the slide. The slide is rotatably connected to the connecting rods adjacent to the scissor brace connecting rods on the same side of the left and right sides through a pin, so that the movement of the scissor brace connecting rod is more stable.

[0011] Furthermore, the drive mechanism also includes a motor, a connecting seat, and a ball screw. The connecting seats are fixedly connected to the front and rear ends of the upper surface of the base, and screw seats are fixedly connected to both the front and rear ends of the upper surface of the base. Ball screws are rotatably connected between the screw seats and the connecting seats on the same side. The connecting seats are all located on the side close to the central axis of the base. Connecting plates are fixedly connected between two adjacent slides on the base. The ball screws pass through the through holes in the middle of the adjacent connecting plates. The nuts of the ball screws are fixedly connected to the adjacent connecting plates. Motors are fixedly connected to the opposite inner sides of the two connecting seats. The output shafts of the motors are fixedly connected to the adjacent ball screws through couplings. The input ends of the motors are electrically connected to the output ends of the controller, driving the scissor brace linkage to rise and fall.

[0012] Furthermore, tilt sensors are fixedly connected to both the left and right ends of the lower surface of the workbench, and the tilt sensors are bidirectionally electrically connected to the controller to achieve closed-loop control.

[0013] Furthermore, two position switches are fixedly connected to the front and rear ends of the left side of the base, and the two position switches on the same side correspond to the left and right positions of the adjacent slides to realize the position detection of the slides.

[0014] Furthermore, the lateral support mechanism also includes rotating wheels, which are fixedly sleeved on the upper end of the support column to drive the support column to rotate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-tipping fixed lifting platform has the following advantages:

[0016] 1. The workbench is lifted by scissor bracing on both the front and rear sides. The support points of the scissor bracing extend equidistantly from the center to both sides, which is equivalent to dynamically expanding the width of the support surface in the horizontal direction. When the workbench is subjected to eccentric load (such as when personnel are working near the edge), the overturning moment of the workbench is decomposed into two force couples in opposite directions, which are jointly borne by the scissor bracing structure on both sides, significantly improving lateral stability and torsional stiffness. At the same time, the tilt sensor detects the change in the tilt angle of the workbench, forming a closed-loop control, so that the workbench always remains parallel to the horizontal plane.

[0017] 2. After the support frame is unfolded, it forms an I-shaped structure with the base, increasing the support area of ​​the base and reducing the possibility of the base tipping over on the left and right sides. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] In the diagram: 1. Base, 2. Drive mechanism, 21. Motor, 22. Connecting seat, 23. Slide, 24. Guide rail, 25. Ball screw, 3. Rotating seat, 4. Scissor brace connecting rod, 5. Worktable, 6. Controller, 7. Tilt sensor, 8. Lateral support mechanism, 81. Fixing plate, 82. Support frame, 83. Rotary wheel, 84. Column, 85. Support plate, 9. Position switch, 10. Connecting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This embodiment provides a technical solution: an anti-tipping fixed lifting platform, including a base 1, a drive mechanism 2 and a lateral support mechanism 8;

[0024] Base 1: A workbench 5 is provided on its upper end. Rotary seats 3 are fixedly connected to the upper surface of base 1 and the lower surface of workbench 5. Scissor bracing rods 4 are provided between the four rotating seats 3 on the same side of the front and back of the upper surface of base 1 and the lower surface of workbench 5.

[0025] Inclination sensors 7 are fixedly connected to both the left and right ends of the lower surface of the worktable 5. The inclination sensors 7 are bidirectionally electrically connected to the controller 6. Since the two scissor bracing rods 4 are driven independently by different motors 21, the lifting speed and height of the scissor bracing rods 4 may be slightly different. The two inclination sensors 7 detect the angle between the worktable 5 and the horizontal plane and feed it back to the controller 6. If the worktable 5 tilts, the worktable 5 controls the motor 21 in the higher direction to start, and the motor 21 in the corresponding direction pulls back the corresponding scissor bracing rod 4 to descend, so that the worktable 5 remains parallel to the horizontal plane, forming a closed-loop control.

[0026] Drive mechanism 2: It is respectively set at the left and right ends of the base 1. The drive mechanism 2 is respectively configured to cooperate with the connecting rods on the inner side of the lower end of the adjacent scissor brace connecting rods 4. The drive mechanism 2 includes a slide 23 and a guide rail 24. The guide rails 24 are respectively symmetrically fixed to the front and rear ends of the upper surface of the base 1 and the front and rear ends of the lower surface of the worktable 5. The upper end of the guide rail 24 on the base 1 and the lower end of the guide rail 24 on the worktable 5 are slidably connected to the slide 23. The slide 23 is rotatably connected to the connecting rods 4 adjacent to the scissor brace connecting rods 4 on the left and right sides through a pin.

[0027] The drive mechanism 2 also includes a motor 21, a connecting seat 22, and a ball screw 25. The connecting seats 22 are fixedly connected to the front and rear ends of the upper surface of the base 1, respectively. Screw seats are fixedly connected to both the front and rear ends of the upper surface of the base 1. Ball screws 25 are rotatably connected between the screw seats and the connecting seats 22 on the same side. The connecting seats 22 are all located on the side closest to the central axis of the base 1. Connecting plates 10 are fixedly connected between two adjacent slides 23 located on the base 1. The ball screws 25 pass through the through holes in the middle of the adjacent connecting plates 10. The nuts of the ball screws 25 are fixedly connected to the adjacent connecting plates 10. Motors 21 are fixedly connected to the opposite inner surfaces of the two connecting seats 22. The output shafts of motor 21 are fixedly connected to adjacent ball screws 25 via couplings. The input ends of motor 21 are electrically connected to the output ends of controller 6. When the user stands on the upper surface of workbench 5, the two motors 21 are started by controller 6. The output shafts of motor 21 drive the adjacent ball screws 25 to rotate, causing the entire assembly of connecting plate 10 and slide block 23 to slide between two adjacent guide rails 24, pushing the scissor brace connecting rod 4 to rise. Motor 21 is a worm gear motor with self-locking properties, which prevents the ball screws 25 from rotating passively in case of failure, thus improving safety. At the same time, the lifting platform does not need to lift too quickly, and the side effect of the slow worm gear transmission of motor 21 is minimal.

[0028] Two position switches 9 are fixedly connected to the front and rear ends of the left side of the base 1. The two position switches 9 on the same side correspond to the left and right positions of the adjacent slide 23. The positions of the slide 23 corresponding to the position switches 9 on the same side are respectively located at the limit stroke position of the slide 23. The position switches 9 detect the position of the slide 23 and feed back to the controller 6. When the position switch 9 on the rear side detects the slide 23, it means that the scissor brace link 4 has reached the maximum lifting height. When the position switch 9 on the front side detects the slide 23, it means that the scissor brace link 4 has reached the minimum height to avoid interference. The position detection of the front slide 23 is performed in the same way.

[0029] Lateral support mechanism 8: It includes a fixed plate 81, a support frame 82, a column 84, and a support plate 85. The fixed plates 81 are symmetrically fixed to the four corners of the upper surface of the base 1. The outer sides of two adjacent fixed plates 81 are fixedly connected to the support frame 82. The end of the support frame 82 away from the adjacent fixed plate 81 is threadedly connected to the column 84. The lower end of the column 84 is fixedly connected to the support plate 85. The lateral support mechanism 8 also includes a rotating wheel 83, which is fixedly sleeved on the upper end of the column 84. When the support frame 82 is pulled open, the rotating wheel 83 drives the column 84 to rotate. The support plate 85 follows the rotation of the column 84 and moves down until it is close to the ground, avoiding... The support frame 82 moves, and the end of the support frame 82 away from the adjacent fixed plate 81 is fixedly connected to a semi-circular aluminum plate, so that the upper and lower ends of the support frame 82 are not closed. The support column 84 is only threadedly connected to the bracket at the upper end of the support frame 82. The lower end of the support column 84 passes through the round hole at the lower end of the support frame 82 to achieve dust protection for the threaded part at the lower end of the support column 84. The upper surface of the support frame 82 is fixedly connected to a sleeve. The bare rod part at the upper end of the support column 84 passes through the opening at the upper end of the sleeve to achieve dust protection for the threaded part at the upper end of the support column 84. After the support frame 82 is unfolded, it forms an I-shaped structure with the base 1, greatly increasing the support area. When not in use, the support frame 82 is retracted to reduce the floor space occupied.

[0030] It also includes a controller 6, which is located on the upper end of the workbench 5, and the input terminal of the controller 6 is electrically connected to an external power supply.

[0031] The working principle of the anti-tipping fixed lifting platform provided by this utility model is as follows: When using this anti-tipping fixed lifting platform, fix the base 1 of this lifting platform in the planned installation position, and unfold the lateral support mechanism 8 before use.

[0032] Pull out the support frame 82, and drive the column 84 to rotate through the rotating wheel 83. The support plate 85 follows the rotation of the column 84 and moves down until it is close to the ground to prevent the support frame 82 from moving. The end of the support frame 82 away from the adjacent fixed plate 81 is fixedly connected to a semi-circular aluminum plate, so that the upper and lower ends of the support frame 82 are not closed. The column 84 is only threadedly connected to the bracket at the upper end of the support frame 82. The lower end of the column 84 passes through the round hole at the lower end of the support frame 82 to achieve dust protection for the threaded part at the lower end of the column 84. The upper surface of the support frame 82 is fixedly connected to a sleeve. The bare rod part at the upper end of the column 84 passes through the opening at the upper end of the sleeve to achieve dust protection for the threaded part at the upper end of the column 84. After the support frame 82 is unfolded, it forms an I-shaped structure with the base 1, which greatly increases the support area. When not in use, the support frame 82 is retracted to reduce the floor space.

[0033] The user stands on the upper surface of the workbench 5 and starts the two motors 21 through the controller 6. The output shafts of the motors 21 drive the adjacent ball screws 25 to rotate, causing the entire assembly of the connecting plate 10 and the slide block 23 to slide between the two adjacent guide rails 24, pushing the scissor brace connecting rod 4 to rise. The motor 21 is a worm gear motor with self-locking properties, which prevents the ball screws 25 from being passively rotated in case of failure, thus improving safety. At the same time, the lifting platform does not need to lift too quickly, and the side effect of the slow worm gear transmission of the motor 21 is minimal.

[0034] Corrugated tubes can be fitted at both ends of the ball screw 25. The corrugated tubes are fixedly connected between the connecting plate 10 and the adjacent screw seat, and between the connecting plate 10 and the adjacent connecting seat 22, respectively, to protect the ball screw 25 from dust.

[0035] The scissor brace link 4 is composed of two sets of links that rotate at a central position. The adjacent ends of the links in the two sets are rotatably connected by a connecting shaft. The links adjacent to the rotating seat 3 are rotatably connected to the rotating seat 3 by a connecting shaft. The scissor brace link 4 can be extended to be larger than the whole composed of two sets of links that rotate at a central position, so as to achieve a higher lifting height. When lifting, the vertical angle of the links in the same group decreases and the distance between the upper and lower ends of the two links in the same group increases, so as to achieve lifting.

[0036] As the scissor brace linkage 4 is raised, the upper end of the linkage located on the innermost side pushes the upper slide block 23 to slide away from the motor 21 at the lower end of the guide rail 24. Compared with the sliding of the pulley, the sliding of the slide block 23 on the guide rail 24 avoids the problem of the pulley separating from the base or worktable due to large errors, and at the same time, it is more stable.

[0037] Since the two scissor bracing rods 4 are driven independently by different motors 21, the lifting speed and height of the scissor bracing rods 4 may be slightly different. The two tilt sensors 7 detect the angle between the worktable 5 and the horizontal plane and feed it back to the controller 6. The two tilt sensors 7 detect simultaneously to increase accuracy. The detected angle is the average value of the angles detected by the two tilt sensors 7. If the worktable 5 tilts, the motor 21 in the higher direction of the worktable 5 is started, and the motor 21 in the corresponding direction pulls back the corresponding scissor bracing rod 4 to lower it, so that the worktable 5 remains parallel to the horizontal plane, forming a closed-loop control.

[0038] The positions of the slides 23 corresponding to the position switches 9 on the front and back sides are respectively located at the limit stroke positions of the slides 23. The position switches 9 detect the position of the slides 23 and feed back to the controller 6. When the position switch 9 on the rear side detects the slides 23, it means that the scissor brace link 4 has reached the maximum lifting height. When the position switch 9 on the front side detects the slides 23, it means that the scissor brace link 4 has reached the minimum height to avoid interference. The position detection of the front slides 23 is performed in the same way.

[0039] It is worth noting that the controller 6 disclosed in the above embodiments can be a single-chip microcomputer of model N32G030F6S7, the tilt sensor 7 can be an HWT605 series tilt sensor, the position switch 9 can be a WK178L234 magnetic position switch, and the motor 21 can be freely configured according to the actual application scenario. The controller 6 controls the tilt sensor 7, the position switch 9 and the motor 21 using methods commonly used in the prior art.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixed lifting platform with anti-tipping feature, characterized in that: It includes a base (1), a drive mechanism (2), and a lateral support mechanism (8); Base (1): A workbench (5) is provided on its upper end. Rotary seats (3) are fixedly connected to the upper surface of the base (1) and the lower surface of the workbench (5). Scissor bracing rods (4) are provided between the four rotating seats (3) on the same side of the front and back of the upper surface of the base (1) and the lower surface of the workbench (5). Drive mechanism (2): It is respectively set at the left and right ends of the base (1), and the drive mechanism (2) is respectively set in cooperation with the connecting rod on the inner side of the lower end of the adjacent scissor brace connecting rod (4); Lateral support mechanism (8): It includes a fixed plate (81), a support frame (82), a column (84) and a support plate (85). The fixed plates (81) are symmetrically fixed to the four corners of the upper surface of the base (1). The outer sides of the two adjacent fixed plates (81) are fixedly connected to the support frame (82). The end of the support frame (82) away from the adjacent fixed plate (81) is threadedly connected to the column (84). The lower end of the column (84) is fixedly connected to the support plate (85).

2. The anti-tipping fixed lifting platform according to claim 1, characterized in that: It also includes a controller (6), which is located at the top of the workbench (5), and the input of the controller (6) is electrically connected to an external power source.

3. The anti-tipping fixed lifting platform according to claim 2, characterized in that: The drive mechanism (2) includes a slide (23) and a guide rail (24). The guide rail (24) is symmetrically fixed to the front and rear ends of the upper surface of the base (1) and the front and rear ends of the lower surface of the worktable (5). The upper end of the guide rail (24) on the base (1) and the lower end of the guide rail (24) on the worktable (5) are slidably connected to the slide (23). The slide (23) is rotatably connected to the connecting rod (4) adjacent to the scissor brace connecting rod (4) on the left and right sides through a pin.

4. The anti-tipping fixed lifting platform according to claim 3, characterized in that: The drive mechanism (2) also includes a motor (21), a connecting seat (22) and a ball screw (25). The connecting seat (22) is fixedly connected to the front and rear ends of the upper surface of the base (1). The front and rear ends of the upper surface of the base (1) are fixedly connected to screw seats. The screw seats and the connecting seats (22) on the same side are rotatably connected to ball screws (25). The connecting seats (22) are all located on the side close to the central axis of the base (1). The two adjacent slides (23) on the base (1) are fixedly connected to a connecting plate (10). The ball screws (25) pass through the through holes in the middle of the adjacent connecting plates (10). The nuts of the ball screws (25) are fixedly connected to the adjacent connecting plates (10). The motors (21) are fixedly connected to the opposite inner sides of the two connecting seats (22). The output shafts of the motors (21) are fixedly connected to the adjacent ball screws (25) through couplings. The input ends of the motors (21) are electrically connected to the output ends of the controller (6).

5. The anti-tipping fixed lifting platform according to claim 2, characterized in that: Inclination sensors (7) are fixedly connected to both the left and right ends of the lower surface of the workbench (5), and the inclination sensors (7) are bidirectionally electrically connected to the controller (6).

6. The anti-tipping fixed lifting platform according to claim 3, characterized in that: The base (1) has two position switches (9) fixedly connected to the front and rear ends on the left side. The two position switches (9) on the same side correspond to the left and right positions of the adjacent slide (23).

7. The anti-tipping fixed lifting platform according to claim 1, characterized in that: The lateral support mechanism (8) also includes a rotating wheel (83), which is fixedly sleeved on the upper end of the support column (84).

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