Elevator car floor shock absorber

Abstract

The application provides an elevator car bottom damping device, which comprises a car upper chassis, a car lower chassis, a damping device arranged between the car upper chassis and the car lower chassis and a fixing angle plate for fixing the damping device between the car lower chassis, wherein the damping device comprises a first staged damping part and a second staged damping part; the first staged damping part comprises a first outer cover, a second outer cover, a third outer cover and a fourth outer cover which are sequentially covered from top to bottom, a bottom plate arranged at the bottom of the fourth outer cover and buffer springs arranged in the outer cover respectively. The elevator car bottom damping device provided by the application has the advantages that the split type car chassis is arranged, a plurality of outer covers are nested between the car upper chassis and the car lower chassis, a plurality of buffer springs are arranged in the outer cover, a multistage buffer structure is formed, the car chassis is unloaded, and the problem that the working performance of the traditional car bottom damping block made of rubber material is poor is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator shock absorption devices, and in particular to an elevator car bottom shock absorption device. Background Technology

[0002] Elevators play a vital role in modern society. Whether they connect office and commercial areas on different floors in commercial buildings, becoming the main mode of daily travel for people in high-rise buildings, or provide convenient and fast travel in residential buildings to improve the quality of life for residents, or even meet the vertical transportation needs of a large number of people in public facilities such as hospitals, schools, and libraries, elevators are important and indispensable as a modern means of transportation and building components.

[0003] With the rapid development of elevator technology, the demand for elevators has gradually evolved from focusing on safety and convenience to pursuing a higher level of comfort. However, current elevator vibration reduction often only involves adding rubber shock absorbers to the bottom of the car. These shock absorbers have poor performance and cannot accurately assess the aging of the rubber material. As a result, the rubber cannot be replaced in time after it loses its elasticity, significantly reducing its original vibration reduction performance. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the prior art, adding rubber shock-absorbing blocks to the bottom of the car for shock absorption results in poor performance and makes it impossible to judge the degree of aging of the rubber material, so that the rubber cannot be replaced in time after losing its elasticity, which greatly reduces the original shock absorption performance.

[0005] To achieve the above objectives, this application proposes an elevator car bottom vibration damping device, comprising: an upper car chassis; a lower car chassis; a vibration damping device disposed between the upper car chassis and the lower car chassis; and a fixing angle plate for fixing the vibration damping device between the upper car chassis and the lower car chassis; wherein the vibration damping device comprises: a first-stage vibration damping section and a second-stage vibration damping section; the first-stage vibration damping section comprises: a first outer cover, a second outer cover, a third outer cover, and a fourth outer cover disposed sequentially from top to bottom; a base plate disposed at the bottom of the fourth outer cover; and buffer springs disposed inside the outer cover respectively.

[0006] The elevator car bottom vibration damping device of this application improves the vibration damping effect of the car chassis by setting a split car chassis and setting a graded vibration damping part between the upper car chassis and the lower car chassis. The several buffer springs set inside the outer cover form a multi-level buffer structure to relieve the force on the car chassis when the car chassis is compressed, which solves the problem of poor performance of the traditional rubber vibration damping blocks added to the bottom of the car for vibration damping in the prior art.

[0007] As an improvement to the aforementioned outer cover of this application, in order to realize the installation and fixation of multiple buffer springs, the bottom of the first outer cover, the second outer cover and the third outer cover are provided with an annular base plate, the top of the first outer cover is provided with a limiting post, and the base plate is provided with a limiting guide groove. The buffer springs include: a first buffer spring, a second buffer spring and a third buffer spring, wherein the top of the first buffer spring passes through the limiting post and is close to the top of the first outer cover, the tops of the second buffer spring and the third buffer spring are respectively close to the bottom end of the annular base plate provided at the bottom of the second outer cover and the third outer cover, and the bottoms of the first buffer spring, the second buffer spring and the third buffer spring are respectively embedded between adjacent limiting guide grooves.

[0008] Furthermore, in order to connect the upper chassis of the car and the lower chassis of the car, an upper chassis bending plate is provided at the bottom end of the upper chassis, and the top of the first outer cover is in close contact with the bottom surface of the upper chassis bending plate.

[0009] As an improvement to the second-stage damping section described above in this application, a secondary damping mechanism, distinct from the buffer spring, is introduced. The second-stage damping section includes: an upper buffer plate welded to the bottom of the base plate; a lower cover fitted with the upper buffer plate; and an upper corrugated buffer plate and a lower corrugated buffer plate respectively disposed at the bottom of the upper buffer plate and the top of the bottom surface of the lower cover, with their corrugated surfaces in contact.

[0010] Furthermore, in order to enable the installation of the first-stage shock absorber and the second-stage shock absorber, a lower chassis bending plate is provided at the top of the car chassis, and the bottom surface of the lower cover is in close contact with the upper bottom surface of the lower chassis bending plate.

[0011] Furthermore, in order to enhance the buffering effect of the corrugated buffer plate as the resistance encountered by the elevator gradually increases during the compression process, the corrugated teeth set on the corrugated buffer plate and the lower corrugated buffer plate increase sequentially from the initial contact point towards both ends.

[0012] Furthermore, to make the installation of the upper buffer plate more convenient, an installation guide plate that nests with the inner wall of the lower cover is provided at the bottom of the upper buffer plate.

[0013] Furthermore, in order to improve the strength when the upper chassis is connected to the lower chassis, L-shaped reinforcing ribs are provided at both ends of the lower chassis bending plate, which are closely attached to the side wall and bottom surface of the lower chassis bending plate.

[0014] Furthermore, in order to achieve positioning during the installation of the upper and lower chassis, the top of the L-shaped reinforcing rib is connected to the upper chassis of the car via a fixing block, and the bottom of the L-shaped reinforcing rib has bolt holes, which are connected to the bending plate of the lower chassis via bolts. A slot is provided where the fixing block meets the upper chassis of the car, and the side wall of the upper chassis of the car is inserted into the slot.

[0015] The beneficial effects of this application are as follows:

[0016] 1. The elevator car bottom shock absorption device of this application improves the shock absorption effect of the car chassis by setting a split car chassis and setting a graded shock absorption part between the upper car chassis and the lower car chassis. The several buffer springs set inside the outer cover form a multi-level buffer structure to relieve the force on the car chassis when the car chassis is compressed, which solves the problem of poor performance of the traditional rubber shock absorption block added to the bottom of the car for shock absorption in the prior art.

[0017] 2. This application divides the traditional car chassis into an upper chassis and a lower chassis. This split car chassis has a better shock absorption effect than the traditional car chassis, and the split car chassis can easily and quickly install multiple shock absorption devices to provide a better shock absorption effect.

[0018] 3. The second-stage damping section of this application achieves secondary damping by connecting the upper corrugated buffer plate and the lower corrugated buffer plate through corrugation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an elevator car bottom shock absorption device according to an embodiment of this application;

[0021] Figure 2 for Figure 1 Enlarged view of point a in the middle;

[0022] Figure 3 This is a schematic diagram of the shock absorption device in the embodiments of this application;

[0023] Figure 4 This is a cross-sectional view of the shock absorption device in the embodiments of this application;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Upper chassis of the car; 11. Bending plate of the upper chassis;

[0026] 2. Car chassis; 21. Chassis bending plate;

[0027] 3. Vibration damping device; 31. First-stage vibration damping section; 311. First outer cover; 312. Second outer cover; 313. Third outer cover; 314. Fourth outer cover; 315. Base plate; 316. Buffer spring; 3161. First buffer spring; 3162. Second buffer spring; 3163. Third buffer spring; 317. Annular chassis; 318. Limiting post; 319. Limiting guide groove; 32. Second-stage vibration damping section; 321. Upper buffer plate; 322. Lower cover; 323. Upper corrugated buffer plate; 324. Lower corrugated buffer plate; 325. Mounting guide plate;

[0028] 4. Fix the corner plate;

[0029] 5. L-shaped reinforcing ribs;

[0030] 6. Fixing block. Detailed Implementation

[0031] The following will be combined with the appendix Figures 1-3 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0032] This embodiment provides an elevator car bottom shock absorption device, which aims to improve the smoothness and safety of elevator operation through a multi-stage shock absorption structure.

[0033] like Figures 1-2 This illustration depicts an elevator car bottom vibration damping device according to this application. The device mainly comprises an upper car chassis 1, a lower car chassis 2, a vibration damping device 3, and a fixing angle plate 4. The upper car chassis 1 and the lower car chassis 2 serve as the main load-bearing components of the elevator car, while the vibration damping device 3 is positioned between them to absorb and disperse vibration energy during elevator operation. The fixing angle plate 4 securely fixes the vibration damping device 3 to the lower car chassis 2, ensuring the stability and reliability of the entire structure.

[0034] Further, please continue to refer to Figure 3 and Figure 4The shock absorption device 3 is further divided into a first-stage shock absorption section 31 and a second-stage shock absorption section 32. The first-stage shock absorption section 31 includes, from top to bottom, a first outer cover 311, a second outer cover 312, a third outer cover 313, and a fourth outer cover 314. These outer covers are nested to form a multi-stage buffer structure. At the bottom of the fourth outer cover 314, a base plate 315 is provided as a support structure for the first-stage shock absorption section. Inside each outer cover, there is a buffer spring 316, including a first buffer spring 3161, a second buffer spring 3162, and a third buffer spring 3163. These springs are respectively attached to the bottom end of the annular base 317 or the limiting post 318 of each outer cover, and are positioned and guided by the limiting guide groove 319 to ensure that the spring can compress and release energy evenly and stably when subjected to pressure.

[0035] Further, please continue to refer to Figure 4 The top of the first outer cover 311 is provided with a limit post 318, which is closely fitted with the upper chassis bending plate 11 provided at the bottom of the upper chassis 1 of the car. This design not only enhances the stability of the structure, but also ensures the effective connection between the shock absorption device and the upper chassis of the car.

[0036] In one embodiment of this application, the second-stage damping section 32 includes an upper buffer plate 321 welded to the bottom of the base plate 315, and a lower cover 322 fitted into the upper buffer plate 321. At the bottom of the upper buffer plate 321 and the top of the lower cover 322, corrugated upper buffer plate 323 and lower corrugated buffer plate 324, respectively, are provided with corrugated surfaces in contact. This corrugated design further enhances the damping effect, absorbing more vibration energy through the mutual compression and release of the corrugated teeth. Furthermore, an installation guide plate 325 is provided at the bottom end of the upper buffer plate 321 for nesting with the inner wall of the lower cover 322, ensuring stable installation of the second-stage damping section 32.

[0037] Furthermore, a lower chassis bending plate 21 is provided at the top of the car chassis 2, and the bottom surface of the lower cover 52 is in close contact with the upper bottom surface of the lower chassis bending plate 21. This design not only improves the connection strength between the shock absorption device and the car chassis, but also ensures the maximization of the shock absorption effect.

[0038] For details, please continue to refer to... Figure 4 The corrugated teeth on the upper corrugated buffer plate 53 and the lower corrugated buffer plate 54 increase in size from the initial contact point towards both ends. This design allows the corrugated plate to gradually increase its resistance when subjected to pressure, and also gradually increases the angle of inclination of the corrugated plate relative to the vertical plane, thereby achieving a more stable shock absorption effect.

[0039] In one embodiment of this application, to further enhance the strength and stability of the entire structure, L-shaped reinforcing ribs 6 are provided at both ends of the lower chassis bending plate 21, closely abutting its sidewalls and bottom surface. The top end of the L-shaped reinforcing rib 6 is connected to the upper chassis 1 of the car via a fixing block 7, and the bottom end is connected to the lower chassis bending plate 21 via bolts. A slot is provided where the fixing block 7 meets the upper chassis 1 of the car, and the sidewall of the upper chassis 1 of the car is inserted into the slot. This connection method is not only simple and quick, but also ensures the firmness of the connection.

[0040] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shock-absorbing device for the bottom of an elevator car, characterized in that, include: Upper chassis of the car (1); lower chassis of the car (2); shock-absorbing device (3) disposed between the upper chassis of the car (1) and the lower chassis of the car (2) and a fixing angle plate (4) fixing the shock-absorbing device (3) between the lower chassis of the car (2); wherein, the shock-absorbing device (3) includes: a first-stage shock-absorbing part (31) and a second-stage shock-absorbing part (32); the first-stage shock-absorbing part (31) includes: a first outer cover (311), a second outer cover (312), a third outer cover (313) and a fourth outer cover (314) disposed sequentially from top to bottom; a base plate (315) disposed at the bottom of the fourth outer cover (314) and buffer springs (316) disposed inside the outer cover respectively.

2. The elevator car bottom shock absorption device according to claim 1, characterized in that, The first outer cover (311), the second outer cover (312), and the third outer cover (313) are provided with annular base plates (317) at their bottoms. The first outer cover (311) is provided with a limit post (318) at its top. The base plate (315) is provided with a limit guide groove (319). The buffer spring (316) includes: a first buffer spring (3161), a second buffer spring (3162), and a third buffer spring (3163). The first buffer spring (3161) is provided with a limit post (318) at its top. The base plate (315) is provided with a limit guide groove (319). The buffer spring (3161) includes: a first buffer spring (3161), a second buffer spring (3162), and a third buffer spring (3163). 1) The top of the spring passes through the limiting post (318) and is close to the top of the first outer cover (311). The tops of the second buffer spring (3162) and the third buffer spring (3163) are respectively close to the bottom of the annular base (317) set at the bottom of the second outer cover (312) and the third outer cover (313). The bottoms of the first buffer spring (3161), the second buffer spring (3162) and the third buffer spring (3163) are respectively embedded between adjacent limiting guide grooves (319).

3. The elevator car bottom shock absorption device according to claim 1, characterized in that, The bottom end of the upper chassis (1) of the car is provided with an upper chassis bending plate (11), and the top of the first outer cover (311) is closely attached to the bottom surface of the upper chassis bending plate (11).

4. The elevator car bottom shock absorption device according to claim 1, characterized in that, The second graded shock absorption unit (32) includes: an upper buffer plate (321) welded to the bottom of the base plate (315); a lower cover (322) fitted with the upper buffer plate (321); and an upper corrugated buffer plate (323) and a lower corrugated buffer plate (324) respectively provided at the bottom of the upper buffer plate (321) and the top of the bottom surface of the lower cover (322) with their corrugated surfaces in contact.

5. The elevator car bottom shock absorption device according to claim 1, characterized in that, The bottom of the car chassis (2) is provided with a chassis bending plate (21), and the bottom surface of the lower cover (322) is in close contact with the upper bottom surface of the chassis bending plate (21).

6. The elevator car bottom shock absorption device according to claim 4, characterized in that, The corrugated teeth on the upper corrugated buffer plate (323) and the lower corrugated buffer plate (324) increase sequentially from the initial contact point towards both ends.

7. The elevator car bottom shock absorption device according to claim 4, characterized in that, The bottom end of the upper buffer plate (321) is provided with an installation guide plate (325) that is nested with the inner wall of the lower cover (322).

8. The elevator car bottom shock absorption device according to claim 5, characterized in that, The two ends of the lower chassis bending plate (21) are provided with L-shaped reinforcing ribs (5) that are close to the side wall and bottom surface of the lower chassis bending plate (21).

9. The elevator car bottom shock absorption device according to claim 8, characterized in that, The top of the L-shaped reinforcing rib (5) is connected to the upper chassis (1) of the car via a fixing block (6). The bottom of the L-shaped reinforcing rib (5) has a bolt hole and is connected to the bending plate (21) of the lower chassis via bolts. A slot is provided where the fixing block (6) connects to the upper chassis (1) of the car, and the side wall of the upper chassis (1) of the car is inserted into the slot.

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