Damping device for lifting platform

Abstract

The utility model discloses a damping device for a lifting platform, which belongs to the technical field of lifting platforms and is technically characterized by comprising a bottom frame, a scissor type lifting mechanism is arranged between the inner walls of two sides of the bottom frame, and a supporting platform is arranged at the other end of the scissor type lifting mechanism. Buffer assemblies for conducting energy conversion on descending impact of the supporting platform are arranged at the two ends of the bottom frame correspondingly, each buffer assembly comprises supporting rods on the two sides, the two supporting rods are arranged at the top of the bottom frame through guide mechanisms correspondingly, the tops of the two supporting rods are rotationally connected with a connecting frame, and avoiding grooves are formed in the opposite sides of the two supporting rods correspondingly. Through the arrangement of the connecting frame, the supporting rod and the tension spring, the falling impact force of the supporting platform is converted into the tensile force of the tension spring, falling of the supporting platform is buffered, the supporting platform cannot make direct contact with the bottom frame, then the supporting platform cannot collide with the bottom frame, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting platforms, and in particular relates to a shock absorbing device for a lifting platform. Background Art

[0002] The lifting platform is a multifunctional lifting and loading and unloading mechanical equipment, among which the scissor-type lifting platform is the most commonly used one. It is generally hydraulically driven, so it is called a hydraulic lifting platform.

[0003] After searching, the lifting platform disclosed with announcement number CN219259444U can automatically open the support when rising and automatically retract the support when descending. It is simple, convenient and safe to use. However, when the lifting platform descends, the top platform collides with the bottom frame. The collision will generate vibration, causing the components to loosen, resulting in a reduction in the service life of the lifting platform. Utility Model Content

[0004] The purpose of the present invention is to provide a lifting platform shock absorbing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lifting platform shock absorbing device, comprising a base frame, a scissor-type lifting mechanism is provided between the inner walls on both sides of the base frame, a support platform is provided at the other end of the scissor-type lifting mechanism, and buffer components for converting energy of the downward impact of the support platform are provided at both ends of the base frame, the buffer components include support rods on both sides, the two support rods are arranged on the top of the base frame through a guide mechanism, the tops of the two support rods are rotatably connected to a connecting frame, and avoidance grooves are provided on opposite sides of the two support rods, a tension spring is fixed to one side inner wall of one avoidance groove by bolts, and the tension spring is fixed to one side inner wall of the other avoidance groove, and an adjustment component for auxiliary support of the scissor-type lifting mechanism is provided on one side inner wall of the base frame.

[0006] Preferably, the guide mechanism includes multiple fixed plates, which are symmetrically welded to the inner and outer sides of the base frame, and the opposite surfaces of the multiple fixed plates located at the same end are provided with guide grooves. Sliders are welded on both sides of the support rod, and the slides slide in the guide grooves.

[0007] Preferably, the adjustment assembly includes two fixing rods, both of which are fixed to the inner wall of one side of the base frame by bolts, one end of each of the two fixing rods is welded with an arc-shaped elastic plate, one side of one end of the arc-shaped elastic plate is welded with a connecting rod, and the connecting rod is in contact with the scissor-type lifting mechanism.

[0008] Preferably, elastic rubber columns are fixed to the tops of the four corners of the base frame by bolts, and the height of the elastic rubber columns is higher than the height of the connecting frame after being pressed down by the supporting platform.

[0009] Preferably, both inner walls of the base frame and the support platform are provided with sliding grooves, and both left and right sides of one end of the scissor-type lifting mechanism are provided with rollers, and the rollers slide in the sliding grooves.

[0010] Preferably, an elastic rubber block is bonded to the inner wall of one side of each of the plurality of slide grooves, and the roller is in contact with the elastic rubber block.

[0011] Preferably, a sponge pad is bonded to the top outer wall of the connecting frame, and the sponge pad is in contact with the supporting platform.

[0012] Preferably, the scissor-type lifting mechanism includes multiple groups of scissor-type connecting rods and hydraulic cylinders.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is provided with a connecting frame, a support rod and a tension spring, which converts the impact force of the support platform falling into the tension of the tension spring, thereby cushioning the fall of the support platform, preventing the support platform from direct contact with the base frame, and thus preventing the support platform from colliding with the base frame, thereby increasing the service life of the device.

[0015] 2. The utility model is provided with an adjustment mechanism. When the scissor-type lifting mechanism folds, the arc-shaped elastic plate will bend to generate a reaction force, which blocks the folding of the scissor-type lifting mechanism, slows down the folding of the scissor-type lifting mechanism, further delays the falling speed of the supporting platform, and further improves the buffering effect of the device.

[0016] 3. The utility model is provided with elastic rubber columns. When the support platform falls, it will contact the elastic rubber columns, and then the elastic rubber columns will cushion the support platform, reducing the impact of the support platform on the base frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an upper perspective view of the utility model;

[0018] Figure 2 It is a bottom perspective view of the utility model;

[0019] Figure 3 It is a partial enlarged view of the present utility model.

[0020] In the figure: 1. Base frame; 2. Scissor-type lifting mechanism; 3. Elastic rubber column; 4. Elastic rubber block; 5. Support platform; 6. Fixed rod; 7. Arc-shaped elastic plate; 8. Connecting rod; 9. Roller; 10. Slide groove; 11. Fixed plate; 12. Slider; 13. Guide groove; 14. Connecting frame; 15. Sponge pad; 16. Support rod; 17. Avoidance groove; 18. Tension spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 3 The utility model provides a lifting platform shock absorbing device, including a base frame 1, a scissor-type lifting mechanism 2 is provided between the inner walls on both sides of the base frame 1, the scissor-type lifting mechanism 2 includes multiple groups of scissor-type connecting rods and hydraulic cylinders, and a support platform 5 is provided at the other end of the scissor-type lifting mechanism 2. Both ends of the base frame 1 are provided with a buffer component for converting energy into the impact of the support platform 5 descending. The buffer component includes support rods 16 on both sides. The two support rods 16 are arranged on the top of the base frame 1 through a guide mechanism. The tops of the two support rods 16 are rotatably connected to a connecting frame 14. The opposite sides of the two support rods 16 are provided with avoidance grooves 17. A tension spring 18 is fixed to the inner wall of one side of the avoidance groove 17 by bolts, and the tension spring 18 is connected to one side of the other avoidance groove 17. The inner walls are fixed, and an adjustment component for auxiliary support of the scissor-type lifting mechanism 2 is provided on the inner wall of one side of the base frame 1. When the support platform 5 falls to the bottom, the support platform 5 will squeeze the connecting frame 14 to move downward, and then squeeze one end of the two support rods 16 to move to both sides under the action of the guide mechanism, thereby pulling the tension spring 18 to deform and generate tension, and converting the impact force of the support platform 5 falling into the tension of the tension spring 18, thereby cushioning the fall of the support platform 5. Due to the presence of the scissor-type lifting mechanism 2, the position of the support platform 5 can be maintained, and the rebound of the tension spring 18 can be avoided, so that the support platform 5 will not directly contact the base frame 1, and thus the support platform 5 will not collide with the base frame 1, thereby improving the service life of the device.

[0023] Among them, the guide mechanism includes a plurality of fixed plates 11, which are symmetrically welded on the inner and outer sides of the base frame 1, and the opposite surfaces of the plurality of fixed plates 11 located at the same end are provided with guide grooves 13. Sliders 12 are welded on both sides of the support rod 16, and the sliders 12 slide in the guide grooves 13. When the two support rods 16 are squeezed by the downward movement of the connecting frame 14, the sliders 12 on both sides of the two support rods 16 will move in the guide grooves 13, thereby causing the two support rods 16 to move to both sides respectively, and the support rods 16 and the base frame 1 to be connected as a whole, thereby preventing the connecting frame 14 and the support rods 16 from falling off from the top of the base frame 1.

[0024] Among them, the adjustment component includes two fixing rods 6, and the two fixing rods 6 are fixed to the inner wall of one side of the base frame 1 by bolts. One end of the two fixing rods 6 is welded with an arc-shaped elastic plate 7, and the arc-shaped elastic plate 7 is made of elastic metal material, preferably spring steel. One side of one end of the arc-shaped elastic plate 7 is welded with a connecting rod 8, and the connecting rod 8 is in contact with the scissor-type lifting mechanism 2. During the folding process of the scissor-type lifting mechanism 2, the end rotating with the base frame 1 will contact the connecting rod 8, and then the scissor-type lifting mechanism 2 continues to fold, which will cause the arc-shaped elastic plate 7 to bend and generate a reaction force, thereby blocking the folding of the scissor-type lifting mechanism 2, slowing down the folding of the scissor-type lifting mechanism 2, and further delaying the falling speed of the support platform 5, thereby further improving the buffering effect of the device.

[0025] Among them, elastic rubber columns 3 are fixed to the tops of the four corners of the base frame 1 by bolts, and the height of the elastic rubber columns 3 is higher than the height of the connecting frame 14 after being pressed down by the supporting platform 5. When the supporting platform 5 falls, it will contact the elastic rubber columns 3, and then the elastic rubber columns 3 will cushion the supporting platform 5, reducing the impact of the supporting platform 5 on the base frame 1.

[0026] Among them, the inner walls on both sides of the base frame 1 and the support platform 5 are provided with sliding grooves 10, and the left and right sides of one end of the scissor-type lifting mechanism 2 are provided with rollers 9. The rollers 9 slide in the sliding grooves 10, which can reduce the wear of the scissor-type lifting mechanism 2 between the base frame 1 and the support platform 5, and further improve the service life of the device. The inner walls of one side of multiple sliding grooves 10 are bonded with elastic rubber blocks 4, and the rollers 9 are in contact with the elastic rubber blocks 4. When the scissor-type lifting mechanism 2 is fully folded, the rollers 9 will squeeze the elastic rubber blocks 4 to deform, thereby slowing down the scissor-type lifting mechanism 2 when it is folded to the tail end, so that the falling speed of the support platform 5 is further delayed, and the buffering effect of the support platform 5 on the base frame 1 is further improved.

[0027] A sponge pad 15 is bonded to the top outer wall of the connecting frame 14 , and the sponge pad 15 can contact the supporting platform 5 , thereby reducing the impact when the supporting platform 5 and the connecting frame 14 contact each other and protecting the supporting platform 5 and the connecting frame 14 .

[0028] The working principle and use process of the utility model are as follows: when the support platform 5 is about to fall to the bottom, the support platform 5 will squeeze the connecting frame 14 and move downward. When the two support rods 16 are squeezed and rotated by the downward movement of the connecting frame 14, the sliders 12 on both sides of the two support rods 16 will move in the guide groove 13, so that the two support rods 16 move to both sides respectively, thereby pulling the tension spring 18 to deform and generate tension, converting the impact force of the support platform 5 falling into the tension of the tension spring 18, and cushioning the fall of the support platform 5. Due to the existence of the scissor-type lifting mechanism 2, it can The support platform 5 can be kept in position to avoid rebound of the tension spring 18, so that the support platform 5 will not be in direct contact with the base frame 1, and thus the support platform 5 will not collide with the base frame 1. At the same time, the end of the scissor-type lifting mechanism 2 that rotates with the base frame 1 will contact the connecting rod 8, and then the scissor-type lifting mechanism 2 continues to fold, which will cause the arc-shaped elastic plate 7 to bend and generate a reaction force, thereby blocking the folding of the scissor-type lifting mechanism 2, slowing down the folding of the scissor-type lifting mechanism 2, and further delaying the falling speed of the support platform 5, thereby improving the service life of the device.

[0029] The electronic components and modules used in the content of this utility model can be parts commonly used in the market that can realize the specific functions of this case, and the specific models and sizes can be selected and adjusted according to actual needs.

[0030] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A lifting platform shock absorbing device, comprising a base frame (1), characterized in that: A scissor-type lifting mechanism (2) is provided between the inner walls on both sides of the base frame (1), and a support platform (5) is provided at the other end of the scissor-type lifting mechanism (2). Buffer components for converting energy from the impact of the support platform (5) when it descends are provided at both ends of the base frame (1). The buffer components include support rods (16) on both sides. The two support rods (16) are arranged on the top of the base frame (1) through a guide mechanism. The tops of the two support rods (16) are rotatably connected to a connecting frame (14). Avoidance grooves (17) are provided on opposite sides of the two support rods (16). A tension spring (18) is fixedly connected to the inner wall of one side of one avoidance groove (17), and the tension spring (18) is fixed to the inner wall of one side of the other avoidance groove (17). An adjustment component for providing auxiliary support to the scissor-type lifting mechanism (2) is provided on the inner wall of one side of the base frame (1).

2. The shock absorbing device for a lifting platform according to claim 1, characterized in that: The guide mechanism comprises a plurality of fixed plates (11), the plurality of fixed plates (11) being symmetrically fixedly connected to the inner and outer sides of the base frame (1), and guide grooves (13) are provided on opposite surfaces of the plurality of fixed plates (11) at the same end. Both sides of the support rod (16) are fixedly connected to sliders (12), and the sliders (12) slide in the guide grooves (13).

3. The shock absorbing device for a lifting platform according to claim 1, characterized in that: The adjustment assembly comprises two fixing rods (6), both fixing rods (6) are fixedly connected to the inner wall of one side of the base frame (1), one end of each of the fixing rods (6) is fixedly connected to an arc-shaped elastic plate (7), one side of one end of the arc-shaped elastic plate (7) is fixedly connected to a connecting rod (8), and the connecting rod (8) is contactable with the scissor-type lifting mechanism (2).

4. The shock absorbing device for a lifting platform according to claim 1, characterized in that: Elastic rubber columns (3) are fixedly connected to the tops of the four corners of the base frame (1), and the height of the elastic rubber columns (3) is higher than the height of the connecting frame (14) after being pressed down by the supporting platform (5).

5. The shock absorbing device for a lifting platform according to claim 1, characterized in that: Slide grooves (10) are provided on both inner walls of the base frame (1) and the support platform (5), and rollers (9) are provided on both left and right sides of one end of the scissor-type lifting mechanism (2), and the rollers (9) slide in the slide grooves (10).

6. The shock absorbing device for a lifting platform according to claim 5, characterized in that: An elastic rubber block (4) is fixedly connected to the inner wall of one side of each of the plurality of slide grooves (10), and the roller (9) can contact the elastic rubber block (4).

7. The shock absorbing device for a lifting platform according to claim 1, characterized in that: A sponge pad (15) is fixedly connected to the top outer wall of the connecting frame (14), and the sponge pad (15) is in contact with the supporting platform (5).

8. The shock absorbing device for a lifting platform according to claim 3, characterized in that: The scissor-type lifting mechanism (2) comprises multiple groups of scissor-type connecting rods and hydraulic cylinders.

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