CN209957180U

CN209957180U - Elevator car top wheel device

Info

Publication number: CN209957180U
Application number: CN201920474621.1U
Authority: CN
Inventors: 梁建新
Original assignee: Suzhou Tak Ling Yi Cheng Precision Machinery Ltd By Share Ltd
Current assignee: Suzhou Tak Ling Yi Cheng Precision Machinery Ltd By Share Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-17
Anticipated expiration: 2029-04-10

Abstract

The utility model belongs to the technical field of the elevator equipment technique and specifically relates to an elevator sedan-chair top wheel device, it includes rope sheave, damping device and sets up in connecting rod between the two. Wherein, damping device includes the casing, sets up in the one-level slip shock absorber and the second grade slip shock absorber of this casing inner chamber. A T-shaped groove is formed in the primary sliding shock absorber. The secondary sliding shock absorber is arranged in the T-shaped groove. A first buffer part is further arranged in the T-shaped groove and is arranged right corresponding to the upper end face of the secondary sliding shock absorber. The second-stage sliding shock absorber is fixedly connected to the lower end part of the connecting rod. The elevator car top wheel device further comprises a second buffer part which is arranged between the upper surface of the primary sliding shock absorber and the top wall of the shell. Thus, the peak value of the instantaneous impact force can be greatly reduced, and the service life of the device can be prolonged. In addition, the vibration quantity generated when the elevator is switched from motion to stop in the actual running process can be effectively reduced, and the comfort of passengers is improved.

Description

Elevator car top wheel device

Technical Field

The utility model belongs to the technical field of the elevator equipment technique and specifically relates to an elevator sedan-chair top wheel device.

Background

With the increasing demand of modern people on living quality, elevators are naturally endowed with higher requirements as bearing tools frequently used in daily life of people. When a common elevator is started and stopped, passengers inside the elevator can have obvious uncomfortable feelings caused by overweight or weightlessness, and the riding experience of the passengers is influenced. Therefore, in order to reduce such discomfort of passengers, a shock absorber is generally provided at the head pulley device on the top of the car. The existing shock absorber comprises a shock absorbing shell, an upper end cover, a shock absorbing rod body and a shock absorbing spring arranged between the upper end cover and the end part of the shock absorbing rod body. In the actual operation process of the elevator, all damping functions are realized only through the damping springs, the damping springs always bear the pressure of the first time and are subjected to large impact force, and the shock absorber is short in service life and poor in stability in the long-term use process. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an elevator sedan-chair top wheel device that structural design is simple, and the shock attenuation is effectual, and life is longer.

In order to solve the technical problem, the utility model relates to an elevator sedan-chair top wheel device, it includes rope sheave, damping device and sets up in between the two, plays the connecting rod of connecting action. Wherein, damping device includes the casing, sets up in the one-level slip shock absorber and the second grade slip shock absorber of this casing inner chamber. A T-shaped groove is formed in the primary sliding shock absorber. The two-stage sliding shock absorber is arranged in the T-shaped groove. A first buffer part is further arranged in the T-shaped groove and is arranged right corresponding to the upper end face of the secondary sliding shock absorber. The second-stage sliding shock absorber is fixedly connected to the lower end part of the connecting rod. The damping device further comprises a second buffering part which is arranged between the upper surface of the primary sliding damping body and the top wall of the shell.

Therefore, the utility model discloses in the further modified technical scheme, first buffer is a plurality of equipartitions in the first column spring of second grade slip shock absorber up end, and second buffer also is a plurality of equipartitions in the second column spring of one-level slip shock absorber up end.

Of course, in the above technical solution, the first buffer portion may also be a plurality of first cylindrical springs uniformly distributed on the upper end surface of the secondary sliding shock absorber. The first-level sliding shock absorption body is a magnetic body, and correspondingly, the second buffering part comprises a magnet fixed on the top wall of the shell. The primary sliding shock absorber and the magnet are arranged in a mode of opposite homopolarity.

Furthermore, graphite embedded grooves are formed in the side walls of the first-stage sliding shock absorber and the second-stage sliding shock absorber.

Furthermore, for the primary sliding damper, the graphite embedded grooves are a plurality of annular grooves uniformly distributed along the height direction of the primary sliding damper. In a similar way, for the second-stage sliding damper, the graphite embedded grooves are a plurality of annular grooves uniformly distributed along the height direction of the second-stage sliding damper.

Furthermore, the section of the graphite embedding groove is in an inverted trapezoid shape.

Furthermore, the elevator car top wheel device also comprises a car beam connecting piece which is a C-shaped bending piece, the upper wing of the car beam connecting piece is fixed with the bottom surface of the shell in a welding mode, and the lower wing of the car beam connecting piece is fixed with the car beam in a bolt detachable connection mode.

Furthermore, the elevator car top wheel device also comprises a hydraulic shock absorber which is connected between the shell and the car beam.

Compare in traditional ascending elevator cab wheel device the utility model discloses an among the technical scheme, its damping device is provided with two sets of shock mitigation systems, slides between the shock absorber and the one-level promptly and all independently be provided with the buffering portion between shock absorber and the casing at the second grade to cut down the peak value of instantaneous impact force widely, improve its self life. In addition, in the actual running process of the elevator, the secondary damping can effectively reduce the vibration generated when the elevator is switched from motion to stop, thereby improving the comfort of passengers taking the elevator.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a first embodiment of the elevator car top wheel device.

Fig. 2 is a schematic structural view of a second embodiment of the elevator car top wheel device.

Fig. 3 is a schematic structural view of the one-level sliding damper in the elevator car top wheel device of the present invention.

1-a rope pulley; 2-a damping device; 21-a housing; 22-a primary sliding shock absorber; 221-T-shaped grooves; 222-graphite embedded groove; 23-a secondary sliding shock absorber; 24-a first buffer; 241-a first cylindrical spring; 25-a second buffer; 251-a second cylindrical spring; 252-a magnet; 3-a connecting rod; 4-C-shaped bending pieces; 5-hydraulic shock absorber.

Detailed Description

In the description of the present invention, it should be understood that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The present invention will be described in detail with reference to the following embodiments, and fig. 1 shows a schematic structural diagram of a first embodiment of the elevator car top wheel device of the present invention, which is composed of a rope pulley 1, a damping device 2, a connecting rod 3, and the like, wherein a central rotating shaft of the rope pulley 1 is hinged to one end of the connecting rod 3, and the damping device 2 is connected to the other end of the connecting rod 3. The damper device 2 includes a housing 21, a primary sliding damper 22 and a secondary sliding damper 23 provided in an inner cavity of the housing 21. A T-shaped groove 221 is formed in the primary sliding damper 22. The secondary sliding damper 23 is disposed in the T-shaped groove 221, and it should be noted that, in the assembly stage, the one-side clearance of the secondary sliding damper 23 with respect to the side wall of the T-shaped groove 221 needs to be strictly controlled to ensure the movement accuracy of the secondary sliding damper 23. A cylindrical spring is further provided in the T-shaped groove 221, which is disposed just corresponding to the upper end surface of the secondary sliding damper 23. The secondary sliding damper 23 is fixedly connected to the lower end of the connecting rod 3, thereby achieving connection with the connecting rod 3. A cylindrical spring is also provided between the upper surface of the primary slide damper 22 and the top wall of the housing 21. For the sake of convenience of distinction, the cylindrical spring in contact with the top surface of the secondary slide damper 23 is named a first cylindrical spring 241, and the cylindrical spring in contact with the top surface of the primary slide damper 22 is named a second cylindrical spring 251. Compare in the elevator cab wheel device in the conventional meaning the utility model discloses an among the technical scheme, its damping device 2 is provided with two sets of shock mitigation systems, slide between damper 23 and the one-level promptly and slide between damper 22 and the one-level and slide between damper 22 and casing 21 and all independently be provided with first buffer 24 (in this embodiment, can directly regard as first column spring 241) and second buffer 25 (in this embodiment, can directly regard as second column spring 251) to reduce the peak value of instantaneous impact force widely, improve its self life. In addition, in the actual running process of the elevator, the secondary damping can effectively reduce the vibration generated when the elevator is switched from motion to stop, thereby improving the comfort of passengers taking the elevator.

As a further optimization of the elevator car top wheel device, graphite embedded grooves 222 (as shown in fig. 3) can be formed in the side walls of the primary sliding shock absorber 22 and the secondary sliding shock absorber 23, and the friction coefficient of the primary sliding shock absorber and the secondary sliding shock absorber in the up-and-down movement process is reduced through the self-lubricating property of graphite, so that the service life is prolonged, and the later maintenance frequency is reduced. Furthermore, the specific structure and arrangement of the graphite insertion grooves 222 can be specified, so as to obtain better lubrication performance, specifically: for the primary sliding damper 22, the graphite fitting grooves 222 are a plurality of annular grooves that are uniformly distributed in the height direction of the primary sliding damper 22. The secondary slide damper 23 can be provided in an analogous manner with reference to the form of the primary slide damper 22 described above.

Here, in order to enhance the tight coupling between the graphite and the primary and secondary sliding

dampers

22 and 23 and to prevent the graphite from falling off during use, the graphite insertion groove 222 may have an inverted trapezoidal cross section (i.e., a dovetail shape).

Fig. 2 shows a schematic structural view of a second embodiment of the elevator car top wheel device according to the present invention, which is different from the first embodiment only in that the one-stage sliding damper 22 is provided as a magnetic body, and accordingly, a magnet 252 is provided on the top wall of the housing 21 just opposite to the one-stage sliding damper 22. The primary slide damper 22 and the magnet 252 are disposed in a manner such that they are opposite to each other in the same polarity. In this way, the principle that like poles of magnets repel each other is adopted to achieve the damping effect. Due to the non-contact characteristic of the magnetic suspension, mechanical abrasion cannot be generated, and therefore the damping device has a long service life.

As a further optimization of the two embodiments of the elevator car top wheel device, a car beam connecting piece can be further arranged. The method specifically comprises the following steps: the upper wing of the C-shaped bent piece 4 is fixed with the bottom surface of the shell 21 in a welding mode, and the lower wing is fixed with the car beam in a bolt detachable connection mode. The C-shaped bent piece 4 is preferably made of spring steel. The C-shaped bending piece 4 has a certain elastic quantity, so that the damping performance of the car top wheel device can be further improved.

Of course, the car cross beam connecting piece can adopt the C-shaped bending piece 4, and can also adopt elastic bending pieces with other shapes and styles according to actual conditions.

As a further optimization, for special and high-end applications, a hydraulic shock absorber 5 may be additionally provided between the housing 21 and the car cross beam, so as to further improve the shock absorbing performance of the car top wheel device.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An elevator car top wheel device comprises a rope wheel, a damping device and a connecting rod which is arranged between the rope wheel and the damping device and plays a role in connection; the damping device is characterized by comprising a shell, a primary sliding damping body and a secondary sliding damping body, wherein the primary sliding damping body and the secondary sliding damping body are arranged in an inner cavity of the shell; a T-shaped groove is formed in the primary sliding shock absorber; the secondary sliding shock absorber is arranged in the T-shaped groove; a first buffer part is arranged in the T-shaped groove and is just arranged corresponding to the upper end surface of the secondary sliding shock absorption body; the secondary sliding shock absorber is fixedly connected to the lower end part of the connecting rod; the shock absorber further comprises a second buffer part which is arranged between the upper surface of the primary sliding shock absorber and the top wall of the shell.

2. The elevator car top wheel device according to claim 1, wherein the first buffer is a plurality of first cylindrical springs uniformly distributed on the upper end surface of the secondary sliding damper, and the second buffer is a plurality of second cylindrical springs uniformly distributed on the upper end surface of the primary sliding damper.

3. The elevator car top wheel device according to claim 1, wherein the first buffer is a plurality of first cylindrical springs uniformly distributed on the upper end surface of the secondary sliding damper; the first-stage sliding shock absorption body is a magnetic body, and correspondingly, the second buffer part comprises a magnet fixed on the top wall of the shell; the primary sliding shock absorber and the magnet are arranged in a mode of opposite homopolarity.

4. The elevator ceiling wheel apparatus of any of claims 1 to 3, wherein graphite embedded grooves are formed in the side walls of the primary sliding damper and the secondary sliding damper.

5. The elevator car top wheel device according to claim 4, wherein said graphite embedded grooves are a plurality of annular grooves uniformly distributed in the height direction of said primary sliding damper; for the secondary sliding shock absorber, the graphite embedded grooves are also a plurality of annular grooves which are uniformly distributed along the height direction of the secondary sliding shock absorber.

6. The elevator ceiling wheel apparatus of claim 5, wherein the graphite embedded groove has an inverted trapezoidal cross-section.

7. The elevator ceiling wheel assembly of any one of claims 1 to 3, further comprising a car cross member connecting member which is a C-shaped bent member, wherein the upper wing of the C-shaped bent member is fixed to the bottom surface of the housing by welding, and the lower wing of the C-shaped bent member is fixed to the car cross member by a bolt detachably connected thereto.

8. The elevator ceiling wheel apparatus of claim 7, further comprising a hydraulic shock absorber coupled between the housing and the car cross member.