Lifting platform with protection function

Abstract

The lifting platform with the protection function comprises a base, a bearing plate is arranged above the base, a lifting mechanism is arranged between the base and the bearing plate, installation grooves are formed in the top of the base and the bottom of the bearing plate, two symmetrically-arranged sliding grooves are formed in the inner walls of the installation grooves, and the sliding grooves are arranged in the sliding grooves. A fixed shaft is fixedly arranged in the sliding groove, a sliding shaft is connected in the sliding groove in a sliding mode, a shaft sleeve is connected to the sliding shaft in a rotating mode, an oil cylinder is hinged to the interior of the installation groove, and a piston rod of the oil cylinder is fixedly connected with the sliding shaft. According to the lifting platform with the protection function, the friction force between the connecting rods of the telescopic frame is increased through the friction mechanism and the butterfly-shaped gasket, when the oil cylinder below the lifting platform is suddenly damaged, the telescopic frame can slowly descend, and the safety of people and objects on the lifting platform is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a lifting platform with a protective function. Background Art

[0002] A lifting platform is a kind of lifting machinery that transports people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with various flat conveying equipment as a connecting device for conveyor lines at different heights. It is generally driven by hydraulics, so it is called a hydraulic lifting platform. In addition to being used for transporting goods at different heights, it is widely used in high-altitude installation, maintenance and other operations. The free lifting feature of the lifting platform is widely used in municipal maintenance, docks and logistics center cargo transportation and other fields. When the existing lifting platform is in use, it is suspended below after being lifted to a certain height. If the lower hydraulic cylinder is damaged, it will cause damage to the people and objects on the lifting platform. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a lifting platform with a protective function, the purpose of which is to solve the problem that the existing lifting platform, when in use, is lifted to a certain height and the bottom is suspended. If the lower hydraulic cylinder is damaged, it will cause damage to people and objects on the lifting platform.

[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0005] A lifting platform with a protective function comprises a base, a bearing plate is arranged above the base, a lifting mechanism is arranged between the base and the bearing plate, a mounting groove is provided on the top of the base and the bottom of the bearing plate, two symmetrically arranged slide grooves are arranged on the inner wall of the mounting groove, a fixed shaft is fixed in the slide groove, a sliding shaft is slidably connected in the slide groove, a shaft sleeve is rotatably connected to the sliding shaft, an oil cylinder is hinged in the mounting groove, and a piston rod of the oil cylinder is fixedly connected to the sliding shaft;

[0006] The lifting mechanism comprises a telescopic frame hinged to a fixed shaft, the telescopic frame is fixedly connected to a shaft sleeve, and a friction mechanism is provided at a mutually hinged position of two connecting plates of the telescopic frame;

[0007] The friction mechanism comprises a screw rod arranged between two connecting plates of the telescopic frame, a plurality of disc-shaped gaskets are arranged between the two connecting plates of the telescopic frame, a guide groove is opened on the screw rod, and both ends of the screw rod are provided with a stop gasket and a stop nut.

[0008] Furthermore, every two adjacent disc-shaped gaskets are symmetrically arranged.

[0009] Furthermore, walking wheels are provided at the four corners of the bottom of the base.

[0010] Furthermore, shock-absorbing dampers are installed at the four corners of the top of the base.

[0011] Furthermore, a guardrail is provided on the top of the bearing plate.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a lifting platform with a protective function. By means of a friction mechanism, a butterfly gasket increases the friction between the connecting rods of the telescopic frame. When the oil cylinder below the lifting platform is suddenly damaged, the telescopic frame can slowly descend to ensure the safety of people and objects on the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the friction mechanism structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the screw structure of the utility model.

[0017] Reference table of reference numerals:

[0018] 1. Base; 2. Load-bearing plate; 3. Lifting mechanism; 4. Mounting groove; 5. Slide groove; 6. Fixed shaft; 7. Sliding shaft; 8. Bushing; 9. Cylinder; 10. Telescopic frame; 11. Friction mechanism; 12. Screw; 13. Disc washer; 14. Backstop washer; 15. Backstop nut; 16. Travel wheel; 17. Shock absorber; 18. Guardrail; 19. Guide groove. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0020] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0022] like Figures 1 to 3As shown, a lifting platform with a protective function includes a base 1. Walking wheels 16 are provided at the four corners of the bottom of the base 1 to facilitate the movement of the lifting platform. A bearing plate 2 is provided above the base 1. A guardrail 18 is provided on the top of the bearing plate 2 to prevent people from falling when standing on the bearing plate 2.

[0023] The top of the base 1 and the bottom of the bearing plate 2 are both provided with mounting grooves 4, the inner wall of the mounting groove 4 is provided with two symmetrically arranged slide grooves 5, a fixed shaft 6 is fixedly provided in the slide groove 5, a sliding shaft 7 is slidably connected in the slide groove 5, a sleeve 8 is rotatably connected to the sliding shaft 7, an oil cylinder 9 is hinged in the mounting groove 4, and the piston rod of the oil cylinder 9 is fixedly connected to the sliding shaft 7.

[0024] A lifting mechanism 3 is provided between the base 1 and the carrying plate 2 . The lifting mechanism 3 includes a telescopic frame 10 hinged to the fixed shaft 6 . The telescopic frame 10 is fixedly connected to the shaft sleeve 8 .

[0025] The oil cylinder 9 drives the sliding shaft 7 to slide, and the sliding shaft 7 drives the telescopic frame 10 to rise and fall through the shaft sleeve 8.

[0026] A friction mechanism 11 is provided at the mutually hinged joint of the two connecting plates of the telescopic frame 10. The friction mechanism 11 includes a screw 12 arranged between the two connecting plates of the telescopic frame 10. A plurality of disc-shaped gaskets 13 are provided between the two connecting plates of the telescopic frame 10. Every two adjacent disc-shaped gaskets 13 are symmetrically arranged. A guide groove 19 is provided on the screw 12. Both ends of the screw 12 are provided with a stop gasket 14 and a stop nut 15.

[0027] Through the friction mechanism 11, the stop nut 15 is installed on the screw rod 12, so that the disc gasket 13 produces elastic deformation, the stop nut 15 is fixed by the stop gasket 14, and the disc gasket 13 increases the friction between the connecting rods of the telescopic frame 10. When the oil cylinder 9 under the lifting platform is suddenly damaged, the telescopic frame 10 can slowly descend to ensure the safety of people and objects on the lifting platform.

[0028] Shock-absorbing dampers 17 are installed at the four corners of the top of the base 1. When the lifting platform descends to the bottom, the shock-absorbing dampers 17 reduce the vibration of the bearing plate 2, so that the bearing plate 2 descends stably.

[0029] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A lifting platform with protective function, characterized in that: The invention comprises a base (1), a bearing plate (2) is arranged above the base (1), a lifting mechanism (3) is arranged between the base (1) and the bearing plate (2), a mounting groove (4) is provided at the top of the base (1) and the bottom of the bearing plate (2), two symmetrically arranged slide grooves (5) are arranged on the inner wall of the mounting groove (4), a fixed shaft (6) is fixed in the slide groove (5), a sliding shaft (7) is slidably connected in the slide groove (5), a shaft sleeve (8) is rotatably connected to the sliding shaft (7), an oil cylinder (9) is hinged in the mounting groove (4), and a piston rod of the oil cylinder (9) is fixedly connected to the sliding shaft (7); The lifting mechanism (3) comprises a telescopic frame (10) hinged to a fixed shaft (6), the telescopic frame (10) being fixedly connected to a shaft sleeve (8), and a friction mechanism (11) being provided at a mutually hinged position of two connecting plates of the telescopic frame (10); The friction mechanism (11) comprises a screw rod (12) arranged between two connecting plates of the telescopic frame (10), a plurality of disc-shaped washers (13) are arranged between the two connecting plates of the telescopic frame (10), a guide groove (19) is provided on the screw rod (12), and both ends of the screw rod (12) are provided with a stop washers (14) and a stop nut (15).

2. A lifting platform with protective function according to claim 1, characterized in that: Every two adjacent disc-shaped gaskets (13) are symmetrically arranged.

3. The protective lifting platform according to claim 1, characterized in that: Travel wheels (16) are provided at the four corners of the bottom of the base (1).

4. A lifting platform with protective function according to claim 3, characterized in that: Shock-absorbing dampers (17) are installed at the four corners of the top of the base (1).

5. The protective lifting platform according to claim 1, characterized in that: A guardrail (18) is provided on the top of the bearing plate (2).

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