Elevator car buffering device

Abstract

The utility model relates to the technical field of elevator cars, in particular to an elevator car buffering device which comprises a car body installed in an elevator shaft, a conduction plate is installed on the outer surface of the car body, a plurality of buffering grooves are formed in the lower end of the elevator shaft, and the inner walls of the buffering grooves are connected with buffering blocks in a sliding mode. The buffer blocks are installed on the side faces of the buffer plates, the bottoms of the buffer blocks are connected with the hydraulic buffer rods, the hydraulic buffer rods are connected with the liquid storage box through the liquid pipes, the multiple second hydraulic buffer rods are installed at the bottom of the elevator shaft, the elevator car body is primarily buffered through the liquid buffer rods, and the falling speed of the elevator car body is reduced; and in the primary buffering process, the lift car body makes contact with the second liquid buffering rods, secondary buffering is conducted on the lift car body, and the situation that when the falling speed of an elevator is too high, a single buffering device cannot well buffer the lift car body, consequently, the impact force generated by the lift car body is too large, and passengers in the lift car are likely to be injured due to impact is prevented.

Description

Technical Field

[0001] This utility model relates to the field of elevator car technology, and in particular to an elevator car buffer device. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving on at least two rigid tracks perpendicular to the horizontal plane or at an angle of less than 15° to the vertical. Elevators are moved up and down by being pulled by ropes. If the ropes break, the elevator car will plummet, causing injury or even death to passengers.

[0003] Elevator buffer devices, as safety equipment that can mitigate the impact force when an elevator goes out of control, are generally installed in the elevator pit. Existing elevator buffer devices typically consist of buffer columns installed at the bottom of the elevator shaft. However, these buffer columns only provide cushioning when the elevator reaches the bottom of the shaft and cannot reduce the elevator's speed during the fall. If the elevator falls too fast, even with a buffer device at the bottom of the shaft, the resulting impact force can still injure passengers inside the car, indicating a certain deficiency.

[0004] Therefore, it is necessary to provide an elevator car buffer device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an elevator car buffer device.

[0006] This utility model provides an elevator car buffer device, comprising: a car body installed in an elevator shaft; a U-shaped conductive plate installed on the outer surface of the car body; multiple buffer grooves provided on multiple inner surfaces at the lower end of the elevator shaft; buffer blocks slidably connected to the inner walls of the buffer grooves; buffer blocks installed on the side of a buffer plate; the buffer blocks and the buffer plate are an integral structure; the inner dimension of the buffer plate is larger than the outer dimension of the car body; the bottom of the buffer block is connected to the telescopic end of a hydraulic buffer rod; the lower part of the fixed end of the hydraulic buffer rod is connected to the side of a liquid storage tank through a liquid pipe and a liquid valve; the bottom of the fixed end of the hydraulic buffer rod is connected to the bottom end of the buffer groove; multiple second hydraulic buffer rods are installed at the bottom of the elevator shaft below the buffer groove; the lower part of the fixed end of the second hydraulic buffer rods is connected to the side of the liquid storage tank through a second liquid pipe and a second liquid valve; the liquid storage tank is placed inside a deep pit in the elevator shaft on one side of the second hydraulic buffer rods.

[0007] Preferably, a second buffer plate is connected to the top of the second hydraulic buffer rod, and the second buffer plate is rectangular in shape.

[0008] Preferably, a cushioning pad is adhered to the top of the second buffer plate, and the cushioning pad is made of rubber.

[0009] Preferably, a U-shaped second transmission plate is installed on the outer surface of the car body above the transmission plate, and the second transmission plate has the same size as the transmission plate.

[0010] It should be noted that by setting up a second transmission plate, the force can be transmitted through the second transmission plate when the transmission plate is damaged, thereby improving the device's resilience.

[0011] Preferably, multiple clips are installed on the inner surface of the elevator shaft below the buffer plate, and the clips are movably connected to the outer surface of the liquid outlet pipe.

[0012] Preferably, the lower end of the inner surface of the elevator shaft is provided with a plurality of third buffer grooves, the third buffer grooves are rotatably connected to a third buffer plate through a rotating shaft, a return spring is sleeved on the outer surface of the rotating shaft, one end of the return spring is connected to the inner surface of the third buffer groove, and the car body is located inside the third buffer plate.

[0013] Preferably, the fixed ends of the hydraulic buffer rod and the second hydraulic buffer rod are respectively provided with an oiling hole and a second oiling hole, and the oiling hole and the second oiling hole are respectively connected to the fixing bolt and the second bolt.

[0014] Compared with related technologies, the elevator car buffer device provided by this utility model has the following beneficial effects:

[0015] 1. This utility model uses a liquid buffer rod to initially buffer the car body, thereby reducing the falling speed of the car body. During the initial buffering process, the car body comes into contact with the second liquid buffer rod for secondary buffering. This prevents the single buffer device from being unable to effectively buffer the car body when the elevator falls too fast, which would result in excessive impact force on the car body and could easily cause injury to passengers inside the car due to the impact.

[0016] 2. By setting a rectangular buffer plate, this utility model can increase the contact area between the second hydraulic buffer rod and the bottom of the car body, thereby better transmitting force and effectively reducing the reverse pressure on the bottom of the car body, preventing large-scale deformation and penetration of the bottom of the car body during buffering. By setting a buffer pad made of rubber material, the reverse pressure on the bottom of the car body is further reduced.

[0017] 3. This utility model can be fixed to the liquid outlet pipe by setting a buckle, so that when the liquid outlet pipe is connected, it runs along the inner surface of the elevator shaft, preventing the liquid outlet pipe from being located directly below the car body and easily broken by the car body, which would affect the flow of hydraulic oil. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of an elevator car buffer device provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the internal structure of the elevator shaft.

[0020] Figure 3 for Figure 2 The image shown is a bottom-view view of the elevator shaft interior.

[0021] The following are the labeling elements in the diagram: 1. Elevator shaft; 2. Car body; 3. Transmission plate; 4. Second transmission plate; 5. Slide plate; 6. Hydraulic buffer rod; 7. Second hydraulic buffer rod; 8. Second buffer plate; 9. Buffer pad; 10. Liquid storage tank; 11. Buffer groove; 12. Buffer block; 13. Liquid pipe; 14. Buckle; 15. Fixing bolt; 16. Second bolt; 17. Third buffer plate; 18. Third buffer groove; 19. Rotating shaft; 20. Return spring; 21. Liquid valve; 22. Second liquid pipe; 23. Second liquid valve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] refer to Figures 1 to 3 This utility model provides an elevator car buffer device, comprising: a car body 2 installed in an elevator shaft 1; a U-shaped transmission plate 3 installed on the outer surface of the car body 2; multiple buffer grooves 11 provided on multiple inner surfaces at the lower end of the elevator shaft 1; buffer blocks 12 slidably connected to the inner walls of the buffer grooves 11; buffer blocks 12 installed on the side of the buffer plate; the buffer blocks 12 and the buffer plate are an integral structure; the inner dimension of the buffer plate is larger than the outer dimension of the car body 2; and the bottom of the buffer block 12 is connected to a hydraulic buffer rod 6. The telescopic end is connected to the hydraulic buffer rod 6. The lower part of the fixed end of the hydraulic buffer rod 6 is connected to the side of the storage tank 10 through the liquid pipe 13 and the liquid valve 21. The bottom of the fixed end of the hydraulic buffer rod 6 is connected to the bottom end of the buffer groove 11. Multiple second hydraulic buffer rods 7 are installed at the bottom of the elevator shaft 1 below the buffer groove 11. The lower part of the fixed end of the second hydraulic buffer rod 7 is connected to the side of the storage tank 10 through the second liquid pipe 22 and the second liquid valve 23. The storage tank 10 is placed inside the deep pit of the elevator shaft 1 on one side of the second hydraulic buffer rod 7.

[0024] It should be noted that: the car body 2 is installed in the elevator shaft 1, and a drive motor installed at the top of the elevator shaft 1 drives a cable connected to the top of the car body 2, thereby moving the car body 2 up and down in the elevator shaft 1. Since this is all existing technology, it will not be described in detail again. Both the hydraulic buffer rod 6 and the second hydraulic buffer rod 7 are existing hydraulic buffer devices, mainly composed of pistons, hydraulic cylinders, and seals. They utilize hydraulic oil to transmit pressure to achieve a buffering effect. Both the liquid valve 21 and the second liquid valve are one-way valves. Both the hydraulic buffer rod 6 and the second hydraulic buffer rod 7 are located below the lowest accessible level of the elevator and will not affect the elevator's operation.

[0025] When the elevator malfunctions, the car body 2 falls downwards under the influence of gravity. Since the outer surface of the car body 2 is smaller than the inner surface of the buffer plate, the lower end of the car body 2 passes through the inner side of the buffer plate until the U-shaped transmission plate 3 contacts the buffer plate. The force of the car body 2 falling is transmitted to the buffer plate through the transmission plate 3. The buffer plate moves downwards under the force, which in turn moves the telescopic end of the hydraulic buffer rod 6 downwards. This allows the hydraulic oil inside the hydraulic buffer rod 6 to be sent into the reservoir 10 through the outlet pipe, thus transmitting the hydraulic oil. The pressure achieves a buffering effect. The car body 2 continues to descend at a reduced speed under the buffer of the hydraulic buffer rod 6. When the bottom of the car body 2 contacts the telescopic end of the second hydraulic buffer rod 7, the force of the car body 2 falling is transmitted to the second hydraulic buffer rod 7 through the bottom of the car body 2. This causes the telescopic end of the second hydraulic buffer rod 7 to move downward, thereby sending the hydraulic oil inside the second hydraulic buffer rod 7 into the reservoir 10 through the second outlet pipe. The flow of hydraulic oil in the second hydraulic buffer rod 7 is used to transmit pressure to achieve a further buffering effect.

[0026] The car body 2 is initially buffered by the liquid buffer rod, which reduces the falling speed of the car body 2. During the initial buffering process, the car body 2 comes into contact with the second liquid buffer rod, which provides secondary buffering for the car body 2. This prevents the single buffer device from being unable to effectively buffer the car body 2 when the elevator falls too fast, resulting in excessive impact force on the car body 2, which could easily cause injury to passengers inside the car due to the impact.

[0027] In the embodiments of this utility model, reference is made to Figure 2 As shown, the top of the second hydraulic buffer rod 7 is connected to a second buffer plate 8, which is rectangular in shape.

[0028] In the embodiments of this utility model, reference is made to Figure 2 As shown, a buffer pad 9 is bonded to the top of the second buffer plate 8, and the buffer pad 9 is made of rubber.

[0029] It should be noted that by setting a rectangular second buffer plate 8, the contact area between the second hydraulic buffer rod 7 and the bottom of the car body 2 can be increased, thereby better transmitting force and effectively reducing the reverse pressure on the bottom of the car body 2, preventing large-scale deformation and penetration of the bottom of the car body 2 during buffering. By setting a buffer pad 9 made of rubber material, the reverse pressure on the bottom of the car body 2 can be further reduced.

[0030] In the embodiments of this utility model, reference is made to Figure 1 As shown, a U-shaped second transmission plate 4 is installed on the outer surface of the car body 2 above the transmission plate 3. The second transmission plate 4 has the same size as the transmission plate 3.

[0031] It should be noted that by setting up the second transmission plate 4, the force can be transmitted through the second transmission plate 4 when the transmission plate 3 is damaged, thereby improving the device's resilience.

[0032] In the embodiments of this utility model, reference is made to Figure 2 As shown, multiple clips 14 are installed on the inner surface of the elevator shaft 1 below the buffer plate, and the clips 14 are movably connected to the outer surface of the liquid outlet pipe.

[0033] It should be noted that by setting the buckle 14, it can be movably connected to and fixed to the liquid outlet pipe, so that when the liquid outlet pipe is connected, it runs along the inner surface of the elevator shaft 1, preventing the liquid outlet pipe from being located directly below the car body 2, which could easily be broken by the car body 2 and affect the flow of hydraulic oil.

[0034] In the embodiments of this utility model, reference is made to Figure 2 As shown, the lower end of the inner surface of the elevator shaft 1 is provided with a plurality of third buffer grooves 18. The third buffer grooves 18 are rotatably connected to the third buffer plate 17 through a rotating shaft 19. A return spring 20 is sleeved on the outer surface of the rotating shaft 19. One end of the return spring 20 is connected to the inner surface of the third buffer groove 18. The car body 2 is located inside the third buffer plate 17.

[0035] It should be noted that the initial position of the third buffer plate 17 is horizontal. When the car body 2 falls, it can contact the third buffer plate 17 through the conduction plate 3, causing the third buffer plate 17 to rotate, thereby transferring energy when the car body 2 falls, and thus reducing the speed of the car body 2 falling.

[0036] In the embodiments of this utility model, reference is made to Figure 2 As shown, the fixed ends of the hydraulic buffer rod 6 and the second hydraulic buffer rod 7 are respectively provided with an oiling hole and a second oiling hole, and the oiling hole and the second oiling hole are respectively connected to the fixing bolt 15 and the second bolt 16.

[0037] It should be noted that by setting up the oil filling port and the second oil filling port, new hydraulic oil can be added to the hydraulic buffer rod 6 and the second hydraulic buffer rod 7 after the elevator falls and rescue is completed, so as to facilitate subsequent buffering use.

[0038] The working principle of the elevator car buffer device provided by this utility model is as follows:

[0039] When the elevator malfunctions, the car body 2 falls downwards under the influence of gravity. Since the outer surface of the car body 2 is smaller than the inner surface of the buffer plate, the lower end of the car body 2 passes through the inner side of the buffer plate until the U-shaped transmission plate 3 contacts the buffer plate. The force of the car body 2 falling is transmitted to the buffer plate through the transmission plate 3. The buffer plate moves downwards under the force, which in turn moves the telescopic end of the hydraulic buffer rod 6 downwards. This allows the hydraulic oil inside the hydraulic buffer rod 6 to be sent into the reservoir 10 through the outlet pipe, thus transmitting the hydraulic oil. The pressure achieves a buffering effect. The car body 2 continues to descend at a reduced speed under the buffer of the hydraulic buffer rod 6. When the bottom of the car body 2 contacts the telescopic end of the second hydraulic buffer rod 7, the force of the car body 2 falling is transmitted to the second hydraulic buffer rod 7 through the bottom of the car body 2. This causes the telescopic end of the second hydraulic buffer rod 7 to move downward, thereby sending the hydraulic oil inside the second hydraulic buffer rod 7 into the reservoir 10 through the second outlet pipe. The flow of hydraulic oil in the second hydraulic buffer rod 7 is used to transmit pressure to achieve a further buffering effect.

[0040] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0041] 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. An elevator car buffer device, characterized in that, include: A car body (2) is installed in an elevator shaft (1). A U-shaped transmission plate (3) is installed on the outer surface of the car body (2). Multiple buffer grooves (11) are provided on multiple inner surfaces at the lower end of the elevator shaft (1). Buffer blocks (12) are slidably connected to the inner walls of the buffer grooves (11). The buffer blocks (12) are installed on the side of the buffer plate. The buffer blocks (12) and the buffer plate are an integral structure. The inner dimension of the buffer plate is larger than the outer dimension of the car body (2). The bottom of the buffer block (12) is connected to the telescopic end of the hydraulic buffer rod (6). The lower part of the fixed end of (6) is connected to the side of the storage tank (10) through a liquid pipe (13) and a liquid valve (21). The bottom of the fixed end of the hydraulic buffer rod (6) is connected to the bottom of the buffer groove (11). Multiple second hydraulic buffer rods (7) are installed at the bottom of the elevator shaft (1) below the buffer groove (11). The lower part of the fixed end of the second hydraulic buffer rod (7) is connected to the side of the storage tank (10) through a second liquid pipe (22) and a second liquid valve (23). The storage tank (10) is placed inside the deep pit of the elevator shaft (1) on one side of the second hydraulic buffer rod (7).

2. The elevator car buffer device according to claim 1, characterized in that, The top of the second hydraulic buffer rod (7) is connected to a second buffer plate (8), which is rectangular in shape.

3. The elevator car buffer device according to claim 2, characterized in that, The top of the second buffer plate (8) is bonded with a buffer pad (9), which is made of rubber.

4. The elevator car buffer device according to claim 1, characterized in that, A U-shaped second transmission plate (4) is installed on the outer surface of the car body (2) above the transmission plate (3), and the second transmission plate (4) has the same size as the transmission plate (3).

5. The elevator car buffer device according to claim 1, characterized in that, Multiple buckles (14) are installed on the inner surface of the elevator shaft (1) below the buffer plate, and the buckles (14) are movably connected to the outer surface of the liquid outlet pipe.

6. The elevator car buffer device according to claim 1, characterized in that, The lower end of the inner surface of the elevator shaft (1) is provided with a plurality of third buffer grooves (18). The third buffer grooves (18) are rotatably connected to the third buffer plate (17) through a rotating shaft (19). A return spring (20) is sleeved on the outer surface of the rotating shaft (19). One end of the return spring (20) is connected to the inner surface of the third buffer groove (18). The car body (2) is located inside the third buffer plate (17).

7. The elevator car buffer device according to claim 6, characterized in that, The fixed ends of the hydraulic buffer rod (6) and the second hydraulic buffer rod (7) are respectively provided with a lubrication hole and a second lubrication hole, and the lubrication hole and the second lubrication hole are respectively connected to the fixing bolt (15) and the second bolt (16).

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