Damping device for elevator car

Abstract

The utility model relates to the technical field of elevators, in particular to a damping device for an elevator car, and aims to solve the two problems that an existing damping device cannot increase the stability of an elevator and cannot reduce the falling speed of the elevator in the background technology. Four telescopic assemblies distributed in a rectangular shape are installed in the fixed box, the two ends of each telescopic assembly extend out of the fixed box, the same partition plate is installed in the middles of the inner walls of the two sides of the fixed box, and dampers are installed in the middle of the outer surface of the top of the partition plate and the middle of the outer surface of the bottom of the partition plate. The multiple electric telescopic rods can drive the four damping idler wheels to make contact with the inner wall of an elevator shaft, so that the stability of an elevator in the descending or ascending process is improved, comfortable riding experience is provided for passengers, the four telescopic assemblies are matched with the two dampers, normal damping work can be conducted, and most vibration force can be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a shock-absorbing device for an elevator car. Background Technique

[0002] An elevator is a tool for vertical transportation in a building, used for carrying people or goods in multi-story buildings. Nowadays, elevators have become indispensable building equipment. During the operation of an elevator, it needs to go up, down, stop, and even make an emergency stop in some cases;

[0003] The following problems exist in the existing elevators during use:

[0004] 1. The faster the elevator runs, the greater the vibration amplitude during operation and leveling, and the more likely it is to affect the riding comfort of passengers in the car. However, the existing shock-absorbing components can only provide shock protection when the elevator is collided, and cannot guarantee the stability of the elevator during daily use.

[0005] 2. When the bottom of the elevator is collided, most of the shock-absorbing work is carried out through various springs, and it is impossible to reduce the falling speed of the elevator before being collided, thereby reducing the possible damage. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the utility model provides a shock-absorbing device for an elevator car. By the combined use of four telescopic components, dampers, two buffer components and four damping rollers, it overcomes the deficiencies of the existing technology and effectively solves the two problems that the existing shock-absorbing device cannot increase the stability of the elevator and cannot reduce the falling speed of the elevator.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A shock-absorbing device for an elevator car includes a fixed box, a top plate and a bottom plate. Four telescopic components distributed in a rectangular shape are installed inside the fixed box, and both ends of the four telescopic components extend outside the fixed box. The middle parts of both inner walls of the fixed box are provided with the same partition, and dampers are installed in the middle of the outer surface of the top and the middle of the outer surface of the bottom of the partition. One end of the damper extends outside the fixed box. The top plate is connected to the top ends of the four telescopic components, and the bottom plate is connected to the bottom ends of the telescopic components. One ends of the two dampers are respectively in contact with the top plate and the bottom plate. Rectangular boxes are installed on both outer surfaces of the fixed box, and rectangular blocks are installed in the middle layers of the two rectangular boxes;

[0009] On both outer sides of the two rectangular blocks, two symmetrically distributed electric telescopic rods are installed, and one end of the piston rod of the electric telescopic rod penetrates through the rectangular box. One end of the piston rods of the four electric telescopic rods on the same side among the eight electric telescopic rods is fixed to the same placement plate, and two symmetrically distributed damping rollers are installed on one outer surface of the placement plate. A buffer assembly is installed in the middle of one outer surface of each of the two rectangular boxes. A notch is formed on one outer surface of the top plate, and a speed sensor is installed on the inner wall of the notch. The signal end of the speed sensor is connected to a microprocessor through a signal line.

[0010] Preferably, each of the four telescopic assemblies includes a columnar tube, and a partition plate is installed in the middle of the columnar tube. Sliding ports are formed at both ends of the columnar tube, and a T-shaped column is slidably connected to the inside of each of the two sliding ports. Shock-absorbing springs are installed on both the top outer surface and the bottom outer surface of the partition plate, and the top end of the shock-absorbing spring is connected to the T-shaped column.

[0011] Preferably, the buffer assembly includes a square box, and an opening is formed on one outer surface of the square box. A plastic door panel is fixed to the inside of the opening through bolts.

[0012] Preferably, a layered plate is installed on one side inside the square box, and an airbag layer and an air injection layer are formed between the layered plate and the inside of the square box.

[0013] Preferably, a safety airbag is installed inside the airbag layer, and a gas generator is installed inside the air injection layer. The air injection end of the gas generator is connected to the safety airbag through a pipeline.

[0014] Preferably, a first buffer pad is installed on the top outer surface of the top plate, and a second buffer pad is installed on the bottom outer surface of the bottom plate.

[0015] Preferably, the T-shaped column forms a sliding fit with the inside of the columnar tube.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. For this shock-absorbing device for an elevator car, multiple electric telescopic rods can drive the four damping rollers to contact the inner wall of the elevator shaft, thereby increasing the stability during the downward or upward movement of the elevator and giving passengers a comfortable riding experience. The four telescopic assemblies cooperate with the two dampers to perform normal shock-absorbing work and can relieve most of the vibration forces.

[0018] 2. For this shock-absorbing device for an elevator car, a speed sensor is provided to sense the downward speed of the elevator. When the downward speed of the elevator is too fast, the gas generators in the two buffer assemblies operate to inject gas into the safety airbags. The safety airbags quickly expand and break through the plastic door panels, increasing the contact area between the shock-absorbing assemblies and the elevator shaft, increasing the friction force, effectively reducing the falling speed of the elevator, and thus reducing the injuries suffered by passengers. Description of the Drawings

[0019] Figure 1 Schematic diagram of the main structure of a shock absorption device for an elevator car proposed by the present utility model;

[0020] Figure 2 Schematic diagram of the vertical cross-sectional structure of the telescopic component of a shock absorption device for an elevator car proposed by the present utility model;

[0021] Figure 3 Schematic diagram of the vertical cross-sectional structure of the fixed box of a shock absorption device for an elevator car proposed by the present utility model;

[0022] Figure 4 Schematic diagram of the vertical cross-sectional structure of the rectangular box of a shock absorption device for an elevator car proposed by the present utility model;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the buffer component of a shock absorption device for an elevator car proposed by the present utility model.

[0024] In the figure: 1 fixed box, 2 columnar tube, 3 partition plate, 4 T-shaped column, 5 shock absorption spring, 6 partition board, 7 damper, 8 top plate, 9 first buffer pad, 10 bottom plate, 11 second buffer pad, 12 rectangular box, 13 rectangular block, 14 electric telescopic rod, 15 placement plate, 16 damping roller, 17 square box, 18 plastic door panel, 19 layered board, 20 airbag, 21 gas generator, 22 speed sensor. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] Embodiment 1, referring to Figures 1-5 , a shock absorption device for an elevator car, including a fixed box 1, a top plate 8 and a bottom plate 10. Four telescopic components distributed in a rectangular shape are installed inside the fixed box 1, and both ends of the four telescopic components extend outside the fixed box 1. The middle parts of the two inner walls of the fixed box 1 are both provided with the same partition board 6, and dampers 7 are installed in the middle of the outer surfaces of the top and bottom of the partition board 6. One end of the damper 7 extends outside the fixed box 1. The top plate 8 is connected to the tops of the four telescopic components, and the bottom plate 10 is connected to the bottoms of the telescopic components. One ends of the two dampers 7 are respectively in contact with the top plate 8 and the bottom plate 10. Rectangular boxes 12 are installed on both outer surfaces of the fixed box 1, and rectangular blocks 13 are installed in the middle layers of the two rectangular boxes 12;

[0027] On both outer sides of the two rectangular blocks 13, two symmetrically distributed electric telescopic rods 14 are installed. One end of the piston rod of the electric telescopic rod 14 penetrates through the rectangular box 12. One end of the piston rods of the four electric telescopic rods 14 on the same side among the eight electric telescopic rods 14 is fixed to the same placement plate 15. On one outer surface of the placement plate 15, two symmetrically distributed damping rollers 16 are installed. Buffer components are installed in the middle of one outer surface of each of the two rectangular boxes 12. A notch is formed on one outer surface of the top plate 8, and a speed sensor 22 is installed on the inner wall of the notch. The signal end of the speed sensor 22 is connected to a microprocessor through a signal line.

[0028] Embodiment 2, on the basis of Embodiment 1, is optimized. Each of the four telescopic components includes a columnar tube 2. A partition disk 3 is installed in the middle layer of the columnar tube 2. Slide openings are formed at both ends of the columnar tube 2, and a T-shaped column 4 is slidably connected to the inside of each of the two slide openings. Damping springs 5 are installed on both the top outer surface and the bottom outer surface of the partition disk 3, and the top end of the damping spring 5 is connected to the T-shaped column 4.

[0029] The buffer component includes a square box 17. An opening is formed on one outer surface of the square box 17, and a plastic door panel 18 is fixed inside the opening through bolts.

[0030] A layered plate 19 is installed on one side inside the square box 17, and an airbag layer and an air injection layer are formed between the layered plate 19 and the inside of the square box 17.

[0031] An airbag 20 is installed inside the airbag layer, and a gas generator 21 is installed inside the air injection layer. The air injection end of the gas generator 21 is connected to the airbag 20 through a pipeline.

[0032] A first buffer pad 9 is installed on the top outer surface of the top plate 8, and a second buffer pad 11 is installed on the bottom outer surface of the bottom plate 10.

[0033] A sliding fit is formed between the T-shaped column 4 and the inside of the columnar tube 2.

[0034] Working principle:

[0035] During daily use, multiple electric telescopic rods 14 can drive the four damping rollers 16 to contact the inner wall of the elevator shaft, thereby increasing the stability during the downward or upward movement of the elevator and giving passengers a comfortable riding experience.

[0036] A speed sensor 22 is provided to sense the downward speed of the elevator. When the elevator descends too fast, the gas generators 21 in the two buffer components operate to inject gas into the airbag 20. The airbag 20 quickly expands and breaks through the plastic door panel 18, increasing the contact area between the shock absorption component and the elevator shaft, increasing the friction force, effectively reducing the falling speed of the elevator, and thus reducing the injuries suffered by the passengers. Then, the multiple shock absorption springs 5 in the four telescopic components are compressed under force and cooperate with the two dampers 7 for buffering. The first buffer pad 9 and the second buffer pad 11 can also perform buffering work, thus effectively alleviating most of the vibration force.

[0037] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A shock absorption device for an elevator car, comprising a fixed box (1), a top plate (8) and a bottom plate (10), characterized in that, Inside the fixed box (1), four telescopic components are installed in a rectangular distribution, and both ends of the four telescopic components extend outside the fixed box (1). In the middle of the inner walls on both sides of the fixed box (1), the same partition plate (6) is installed. In the middle of the outer surface at the top and the middle of the outer surface at the bottom of the partition plate (6), dampers (7) are installed. One end of the damper (7) extends outside the fixed box (1). The top plate (8) is connected to the top ends of the four telescopic components, and the bottom plate (10) is connected to the bottom ends of the telescopic components. One end of each of the two dampers (7) contacts the top plate (8) and the bottom plate (10) respectively. On the outer surfaces on both sides of the fixed box (1), rectangular boxes (12) are installed. In the middle layer of the interiors of the two rectangular boxes (12), rectangular blocks (13) are installed. On the outer surfaces on both sides of each of the two rectangular blocks (13), two symmetrically distributed electric telescopic rods (14) are installed. The piston rod ends of the electric telescopic rods (14) penetrate through the rectangular boxes (12). One end of the piston rods of the four electric telescopic rods (14) on the same side among the eight electric telescopic rods (14) is fixed to the same placement plate (15). On the outer surface of one side of the placement plate (15), two symmetrically distributed damping rollers (16) are installed. On the middle of the outer surface on one side of each of the two rectangular boxes (12), a buffer component is installed. On the outer surface on one side of the top plate (8), a notch is formed. On the inner wall of the notch, a speed sensor (22) is installed. The signal end of the speed sensor (22) is connected to a microprocessor through a signal line.

2. The shock absorption device for an elevator car according to claim 1, characterized in that, Each of the four telescopic components includes a columnar tube (2). In the middle layer of the interior of the columnar tube (2), a partition plate (3) is installed. At both ends of the columnar tube (2), sliding openings are formed. Inside both of the sliding openings, T-shaped columns (4) are slidably connected. On the outer surface at the top and the outer surface at the bottom of the partition plate (3), shock-absorbing springs (5) are installed. The top ends of the shock-absorbing springs (5) are connected to the T-shaped columns (4).

3. The shock-absorbing device for an elevator car according to claim 1, characterized in that, The buffer component includes a square box (17). On the outer surface on one side of the square box (17), an opening is formed. Inside the opening, a plastic door panel (18) is fixed by bolts.

4. A shock absorption device for an elevator car according to claim 3, characterized in that, On one side inside the square box (17), a layered plate (19) is installed. The layered plate (19) and the interior of the square box (17) form an airbag layer and an air injection layer.

5. The shock-absorbing device for an elevator car according to claim 4, characterized in that, Inside the airbag layer, a safety airbag (20) is installed. Inside the air injection layer, a gas generator (21) is installed. The air injection end of the gas generator (21) is connected to the safety airbag (20) through a pipeline.

6. The shock-absorbing device for an elevator car according to claim 1, characterized in that, On the outer surface at the top of the top plate (8), a first buffer pad (9) is installed. On the outer surface at the bottom of the bottom plate (10), a second buffer pad (11) is installed.

7. The shock-absorbing device for an elevator car according to claim 2, characterized in that, The T-shaped column (4) and the interior of the columnar tube (2) form a sliding fit.

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