An elevator car buffer device with a secondary buffer structure

Abstract

This utility model proposes an elevator car buffer device with a secondary buffer structure. The buffer assembly includes a fixed plate, storage columns, telescopic columns, a second spring, and a pressure ring. The fixed plate is mounted on the machine body, and the storage columns are respectively disposed on the fixed plate. Each storage column has a storage groove. The telescopic columns are slidably connected to their corresponding storage columns. The two ends of the second spring are respectively connected to the corresponding telescopic column and the storage groove. The pressure ring is mounted on the telescopic column. This utility model provides an elevator car buffer device with a secondary buffer structure. By incorporating this secondary buffer structure, when the primary buffer cannot completely absorb the impact, the elevator car will contact the secondary buffer structure to continue absorbing the impact force, thereby reducing injury to passengers.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator cars, and in particular to an elevator car buffer device with a secondary buffer structure. Background Technology

[0002] An elevator car is a "moving room" inside an elevator that carries people or goods. It includes a floor, walls, ceiling, and doors, and is moved up and down by steel cables or a hydraulic system. A buffer device is usually installed inside the elevator shaft to reduce the impact of an accidental fall.

[0003] When an elevator falls due to a malfunction, the buffer device can effectively absorb the impact energy and reduce the impact force between the car and the pit. However, in the event of a high-speed fall, existing buffer devices may not be able to completely absorb all the impact energy, and there is still a risk of injury to passengers. Therefore, emergency response guidelines are usually posted inside the elevator car to instruct passengers on the correct protective posture, but these guidelines cannot increase the energy absorption capacity of the buffer device to reduce injury to passengers. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to propose an elevator car buffer device with a secondary buffer structure. When the elevator car falls unexpectedly, by setting a secondary buffer structure on the buffer device, when the primary buffer cannot completely absorb the impact, the elevator car will come into contact with the secondary buffer structure and continue to absorb the impact force, thereby reducing the injury to passengers.

[0006] To achieve the above objectives, the first aspect of this utility model proposes an elevator car buffer device with a secondary buffer structure, comprising: a base plate, a body, and a buffer assembly, wherein the body is mounted on the base plate, and the buffer assembly includes a fixed plate, a storage column, a telescopic column, a second spring, and a pressure ring, wherein the fixed plate is mounted on the body, the storage columns are respectively mounted on the fixed plate, the storage columns are provided with storage slots, the telescopic columns are slidably connected to their respective storage columns, the two ends of the second spring are respectively connected to the corresponding telescopic column and the storage slot, and the pressure ring is mounted on the telescopic column.

[0007] In addition, the elevator car buffer device with a secondary buffer structure proposed above according to this utility model may also have the following additional technical features:

[0008] Specifically, the machine body includes a hydraulic cylinder, a hydraulic column, and a first spring. The hydraulic cylinder is mounted on the base plate, the hydraulic column is connected to the hydraulic cylinder, and the first spring is sleeved on the outside of the hydraulic column, with both ends of the first spring connected to the hydraulic cylinder and the hydraulic column, respectively.

[0009] Specifically, the telescopic column is provided with a limiting component, which includes a limiting post and a limiting strip. The limiting post is installed on the bottom wall of the pressure ring, and the fixed plate has a limiting hole. The limiting post is slidably connected to the corresponding limiting hole. The limiting strip is installed on the corresponding telescopic post, and the storage column has a limiting groove. The limiting strip is installed in the corresponding limiting groove.

[0010] Specifically, an aluminum block is installed on the hydraulic column, and a rubber pad is placed on the aluminum block.

[0011] Specifically, the base plate has fixing holes, and bolts are installed in the fixing holes respectively.

[0012] Specifically, the bottom of the fixed plate is provided with a support column, and the other end of the support column is connected to the base plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: when the elevator car falls accidentally, by setting a secondary buffer structure on the buffer device, when the primary buffer cannot completely absorb the impact, the elevator car will come into contact with the secondary buffer structure and continue to absorb the impact force, thereby reducing the injury to passengers.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of an elevator car buffer device with a secondary buffer structure according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the buffer assembly structure of an elevator car buffer device with a secondary buffer structure according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the limiting component structure of an elevator car buffer device with a secondary buffer structure according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of an elevator car buffer device with a secondary buffer structure, in which aluminum blocks and rubber pads are used in conjunction, according to an embodiment of the present invention.

[0020] Reference numerals: 1. Base plate; 2. Body; 21. Oil cylinder; 22. Hydraulic column; 23. First spring; 3. Buffer assembly; 31. Fixed plate; 32. Storage column; 33. Storage slot; 34. Telescopic column; 35. Second spring; 36. Pressure ring; 4. Limiting assembly; 41. Limiting column; 42. Limiting hole; 43. Limiting strip; 44. Limiting groove; 5. Aluminum block; 6. Rubber pad; 7. Fixing hole; 8. Bolt; 9. Support column. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following description, with reference to the accompanying drawings, describes an elevator car buffer device with a secondary buffer structure according to an embodiment of the present invention.

[0023] like Figures 1-4 As shown in the figure, an elevator car buffer device with a secondary buffer structure according to an embodiment of the present invention includes: a base plate 1, a body 2 and a buffer assembly 3.

[0024] The body 2 is mounted on the base plate 1.

[0025] The buffer assembly 3 includes a fixed plate 31, a storage column 32, a telescopic column 34, a second spring 35, and a pressure ring 36.

[0026] The fixed plate 31 is installed on the body 2, the storage column 32 is respectively set on the fixed plate 31, the storage column 32 is provided with a storage groove 33, the telescopic column 34 is slidably connected to the corresponding storage column 32, the two ends of the second spring 35 are respectively connected to the corresponding telescopic column 34 and the storage groove 33, and the pressure ring 36 is installed on the telescopic column 34.

[0027] The machine body 2 includes a hydraulic cylinder 21, a hydraulic column 22, and a first spring 23.

[0028] The hydraulic cylinder 21 is mounted on the base plate 1, the hydraulic column 22 is connected to the hydraulic cylinder 21, the first spring 23 is sleeved on the outside of the hydraulic column 22, and the two ends of the first spring 23 are respectively connected to the hydraulic cylinder 21 and the hydraulic column 22.

[0029] Specifically, when the elevator car falls unexpectedly, the car will first contact the hydraulic column 22, which will press the built-in piston into the oil cylinder 21. The first spring 23 will be compressed to absorb the impact force, thus performing the first buffer. When the first buffer cannot completely absorb the energy, the bottom of the car will contact the pressure ring 36. The pressure ring 36 will then apply pressure to the second spring 35 through the telescopic column 34. The second spring 35 will be compressed to perform the second buffer and absorb energy, thereby reducing the injury to the passengers in the car. Then, the second spring 35 and the first spring 23 will rebound and push the hydraulic column 22 upward. The liquid in the oil cylinder 21 will generate a suction force on the hydraulic column 22. These two forces will partially cancel each other out to reduce the rebound amplitude.

[0030] In one embodiment of this application, such as Figure 3 As shown, a limit component 4 is provided on the telescopic column 34.

[0031] The limiting component 4 includes a limiting post 41 and a limiting strip 43. The limiting post 41 is installed on the bottom wall of the pressure ring 36. The fixed plate 31 has a limiting hole 42, and the limiting post 41 is slidably connected to the corresponding limiting hole 42. The limiting strip 43 is respectively set on the corresponding telescopic post 34. The storage post 32 has a limiting groove 44, and the limiting strip 43 is respectively installed in the corresponding limiting groove 44.

[0032] It should be noted that when the device absorbs energy, the limiting strip 43 and the telescopic column 34 slide in the limiting groove 44 and the limiting hole 42 respectively, so that the telescopic column 34 and the pressure ring 36 always move in the vertical direction, avoiding the deformation and bending of the telescopic column 34 due to excessive instantaneous pressure.

[0033] In one embodiment of this application, such as Figure 4 As shown, an aluminum block 5 is mounted on the hydraulic column 22, and a rubber pad 6 is provided on the aluminum block 5. A fixing hole 7 is provided on the base plate 1, and bolts 8 are installed in the fixing hole 7 respectively. A support column 9 is provided at the bottom of the fixing plate 31, and the other end of the support column 9 is connected to the base plate 1.

[0034] It should be noted that in the event of an impact, the car bottom receiving pad 6 and aluminum block 5 absorb part of the impact force. The buffer device is installed in the elevator shaft by bolts 8 passing through the fixing hole 7. The support column 9 is used to support the fixing plate 31.

[0035] Working principle: When the elevator car falls unexpectedly, the car will first contact the hydraulic column 22, which will press the built-in piston into the oil cylinder 21. The first spring 23 will be compressed to absorb the impact force, thus performing the first buffer. When the first buffer cannot completely absorb the energy, the bottom of the car will contact the pressure ring 36. The pressure ring 36 will then apply pressure to the second spring 35 through the telescopic column 34. The second spring 35 will be compressed to perform the second buffer and absorb energy, thereby reducing the injury to the passengers in the car. Then, the second spring 35 and the first spring 23 will rebound and push the hydraulic column 22 upward. The liquid in the oil cylinder 21 will generate a suction force on the hydraulic column 22. These two forces will partially cancel each other out to reduce the rebound amplitude.

[0036] When the device absorbs energy, the limiting strip 43 and the telescopic column 34 slide in the limiting groove 44 and the limiting hole 42 respectively, so that the telescopic column 34 and the pressure ring 36 always move in the vertical direction, avoiding the deformation and bending of the telescopic column 34 due to excessive instantaneous pressure.

[0037] In summary, by setting a secondary buffer structure on the buffer device, when the primary buffer cannot completely absorb the impact, the elevator car will come into contact with the secondary buffer structure to continue absorbing the impact force, thereby reducing the injury to passengers.

[0038] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An elevator car buffer device with a secondary buffer structure, characterized in that, include: The base plate (1), the body (2), and the buffer assembly (3), among which, The body (2) is mounted on the base plate (1); The buffer assembly (3) includes a fixed plate (31), a storage column (32), a telescopic column (34), a second spring (35), and a pressure ring (36), wherein, The fixed plate (31) is mounted on the body (2); The storage columns (32) are respectively installed on the fixed plate (31); The storage column (32) is provided with a storage slot (33); The telescopic column (34) is slidably connected to the corresponding storage column (32); The two ends of the second spring (35) are respectively connected to the corresponding telescopic column (34) and the storage groove (33); The pressure ring (36) is mounted on the telescopic column (34).

2. An elevator car buffer device with a two-stage buffer structure according to claim 1, characterized in that, The machine body (2) includes a hydraulic cylinder (21), a hydraulic column (22), and a first spring (23), wherein, The hydraulic cylinder (21) is mounted on the base plate (1); The hydraulic column (22) is connected to the oil cylinder (21); The first spring (23) is sleeved on the outside of the hydraulic column (22), and the two ends of the first spring (23) are respectively connected to the oil cylinder (21) and the hydraulic column (22).

3. The elevator car buffer device with a secondary buffer structure according to claim 1, characterized in that, The telescopic column (34) is provided with a limit component (4), wherein, The limiting component (4) includes a limiting post (41) and a limiting strip (43), wherein, The limiting post (41) is installed on the bottom wall of the pressure ring (36); The fixed plate (31) has a limiting hole (42), and the limiting post (41) is slidably connected to the corresponding limiting hole (42); The limiting strips (43) are respectively set on the corresponding telescopic columns (34); The storage column (32) has a limiting groove (44) and the limiting strip (43) is installed in the corresponding limiting groove (44).

4. The elevator car buffer device with a secondary buffer structure according to claim 2, characterized in that, An aluminum block (5) is installed on the hydraulic column (22); A rubber pad (6) is provided on the aluminum block (5).

5. The elevator car buffer device with a secondary buffer structure according to claim 1, characterized in that, The base plate (1) has fixing holes (7); Bolts (8) are installed in the fixing holes (7).

6. The elevator car buffer device with a secondary buffer structure according to claim 1, characterized in that, The bottom of the fixed plate (31) is provided with a support column (9), and the other end of the support column (9) is connected to the base plate (1).

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