CN220078258U

CN220078258U - Elevator speed reducer

Info

Publication number: CN220078258U
Application number: CN202321608015.7U
Authority: CN
Inventors: 朱奇峰; 袁文观; 王正照; 周兵; 廖峰; 彭夕容; 匡旭静; 仝建强
Original assignee: Chengdu Guangcheng Technology Co ltd
Current assignee: Chengdu Guangcheng Technology Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2023-11-24
Anticipated expiration: 2033-06-21

Abstract

The utility model discloses an elevator speed reducing device, which relates to the technical field of elevators and comprises a balancing weight, a track for installing the balancing weight, a speed sensor for monitoring the speed of the balancing weight, a telescopic device installed on the balancing weight and a speed reducing assembly installed at the telescopic end of the telescopic device, wherein the speed reducing assembly is installed between the track and the balancing weight, and the speed sensor is in signal connection with the telescopic device. In order to solve the problem that the passenger is injured caused by too high speed when the elevator car fails.

Description

Elevator speed reducer

Technical Field

The utility model relates to the technical field of elevators, in particular to an elevator speed reducer.

Background

The elevator is a vertical elevator powered by an electric motor and is provided with a box-shaped nacelle for use in multi-story buildings for taking persons or carrying goods. The elevator is used in a multi-storey building, can be used for conveniently communicating an upper layer and a lower layer, and is used for transporting personnel and goods.

When the elevator load carries out up-and-down transportation, the situation that the elevator loses the brake and the elevator car drops down under acceleration possibly appears, such as traction motor fault, outage, etc., and once the elevator car falls, personnel panic, injury, etc. can be caused, in order to protect the life safety of passengers, an elevator speed reducer is required to carry out overspeed protection on the elevator car.

Disclosure of Invention

The utility model provides an elevator speed reducing device, which aims to solve the problem that passengers are injured due to too high speed when an elevator car fails.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides an elevator decelerator, includes the balancing weight with install the track of balancing weight, still include be used for monitoring the speed sensor of balancing weight speed, install in telescoping device on the balancing weight with install in the decelerator assembly of telescoping device flexible end, decelerator assembly install in the track with between the balancing weight, speed sensor with telescoping device signal connection.

The elevator generally comprises an elevator car, a balancing weight, a traction motor and a steel rope, wherein the balancing weight is provided with a speed sensor for detecting the real-time speed of the balancing weight, if the speed detected by the speed sensor is greater than a preset value, the control center controls the speed reducing assembly to work, and the speed reducing assembly is supported by the telescopic device, so that the speed reducing assembly is in contact with a track to carry out friction speed reduction, the speed of the elevator car is reduced, and passengers are prevented from being dangerous.

Further, the speed reducing assembly comprises a plurality of speed reducing plates connected with the balancing weights, and the speed reducing plates correspond to the telescopic ends of the telescopic devices one by one.

Through setting up a plurality of reducing plates, increase with the frictional force between the track, strengthen the deceleration effect, simultaneously through controlling with every reducing plate one-to-one telescoping device, be convenient for change the quantity of the reducing plates of participating in friction deceleration, reach increase or reduce the purpose of friction.

Further, the speed reducing plate comprises an upper speed reducing plate and a lower speed reducing plate, the upper end of the upper speed reducing plate is rotationally connected with the upper end of the balancing weight, and the lower end of the lower speed reducing plate is rotationally connected with the lower end of the balancing weight.

The elevator car has two motion states of ascending and descending, so that the elevator with faults has two unexpected situations of overspeed ascending and overspeed descending, after the upper reducing plate and the lower reducing plate are supported by the telescopic device, a wedge-shaped structure is formed, friction deceleration is generated by contact with the track, and as the balancing weight is connected with the elevator car through a steel rope, when the elevator car ascends, the balancing weight descends, when the elevator car descends, the balancing weight ascends, therefore, the ascending of the balancing weight is decelerated through the upper reducing plate, the downward pulling force can be generated on the balancing weight, the upward pulling force of the elevator car is changed into the upward pulling force of the steel rope, so that the descending speed of the elevator is slowed down, the descending of the balancing weight is decelerated by the lower reducing plate, the upward pulling force of the balancing weight is generated, the balancing weight is reduced or the capacity of the balancing weight of the elevator car is lost, the downward force received by the elevator car is increased, and the elevator car ascends.

Further, the speed reducing plate on the balancing weight is symmetrically arranged relative to the symmetry plane of the balancing weight.

The balancing weight can uniformly apply force to the track and receive uniform reaction force to generate uniform friction force, so that the speed reducing plate on one side is prevented from being damaged due to overlarge stress.

Further, the speed reducing plates are connected to the balancing weights in a pairwise symmetrical mode, and the two mutually symmetrical speed reducing plates are connected with the balancing weights through a telescopic device respectively and synchronously run with the two telescopic devices connected with the two mutually symmetrical speed reducing plates.

The control is convenient, so that two telescopic devices connected with the speed reducing plates which are symmetrical to each other can generate the same thrust and telescopic distance outwards, and the balancing weight is stressed uniformly.

Further, the axes of the two telescopic devices connected with the two mutually symmetrical speed reducing plates are collinear. The two telescopic devices connected with the speed reducing plates which are symmetrical to each other can generate the same thrust and reaction force outwards, and meanwhile, the reaction forces can offset each other, so that uneven stress of the balancing weights is prevented from deflecting.

Further, one side of the lower end of the speed reducing plate, which is far away from the balancing weight, is provided with a round angle. Because the speed reducer rotates under telescoping device's promotion and opens, lead to the speed reducer to keep away from a edges and corners of pivot at first to contact with the track, damage track surface easily, consequently, solve through the mode that sets up the fillet, the fillet can provide bigger initial area of contact simultaneously, produces bigger initial friction.

Further, the speed reducing plate adopts an elastic plate. The speed reducing plate can be bent and deformed under the condition that the expansion device increases thrust, the contact area between the speed reducing plate and the track is further increased, the friction force is increased, and the speed reducing effect is enhanced.

Further, friction layers are arranged on the surfaces, which are in contact with the rails, of the speed reducing plates. Friction force is increased, and deceleration effect is enhanced.

Further, the maximum extension length of the telescopic device is larger than or equal to the distance between the speed reducing plate and the track.

The one or more technical schemes provided by the utility model have at least the following technical effects or advantages:

according to the utility model, the speed sensor is arranged on the balancing weight to detect the real-time speed of the balancing weight, and the speed reducing plate is supported by the telescopic device, so that the speed reducing plate is contacted with the track to carry out friction speed reduction, thereby reducing the speed of the elevator car and preventing passengers from danger.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model;

FIG. 1 is a side cross-sectional view of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

wherein, 1-balancing weight, 2-track, 3-telescoping device, 4-speed reducer, 401, -upper speed reducer, 402-lower speed reducer.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. In addition, the embodiments of the present utility model and the features in the embodiments may be combined with each other without collision.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than within the scope of the description, and the scope of the utility model is therefore not limited to the specific embodiments disclosed below.

An elevator speed reducing device is shown in fig. 1 and 2, and comprises a balancing weight 1, a track 2 for installing the balancing weight 1, a speed sensor for monitoring the speed of the balancing weight 1, a telescopic device 3 installed on the balancing weight 1 and a speed reducing assembly installed at the telescopic end of the telescopic device 3, wherein the speed reducing assembly is installed between the track 2 and the balancing weight 1, and the speed sensor is in signal connection with the telescopic device 3.

The speed sensor can be a laser velocimeter, and is arranged on the balancing weight 1 or the elevator car, the telescopic device 3 can be an electric telescopic column or a hydraulic telescopic column, and the like, preferably the hydraulic telescopic column has high supporting force.

In a more preferred embodiment, the speed reducing assembly comprises a plurality of speed reducing plates 4 connected with the balancing weights 1, and the speed reducing plates 4 are in one-to-one correspondence with the telescopic ends of the telescopic devices 3.

The speed reducing plates 4 are arranged in pairs, as shown in fig. 1 and 2, symmetrically distributed around the balancing weight 1, the specific number is determined according to actual requirements, and the telescopic ends of the telescopic devices 3 are preferably connected with the middle of the speed reducing plates 4.

In a more preferred embodiment, the speed reducing plate 4 includes an upper speed reducing plate 401 and a lower speed reducing plate 402, the upper end of the upper speed reducing plate 401 is rotatably connected with the upper end of the balancing weight 1, and the lower end of the lower speed reducing plate 402 is rotatably connected with the lower end of the balancing weight 1.

In a more preferred embodiment, the speed reduction plate 4 on the counterweight 1 is symmetrically arranged with respect to the symmetry plane of the counterweight 1.

In this embodiment, the balancing weight 1 is of an existing rectangular block structure, and the symmetry of the fitting, the frame, and the like attached after the actual installation is not considered, so three symmetry planes of the balancing weight 1 are symmetry planes in xyz three-coordinate directions respectively.

In a more preferred embodiment, the speed reducing plates 4 are symmetrically distributed and connected to the balancing weight 1 in pairs, two mutually symmetrical speed reducing plates 4 are respectively connected with the balancing weight 1 through a telescopic device 3, and the two telescopic devices 3 connected with the two mutually symmetrical speed reducing plates 4 synchronously operate.

In a more preferred embodiment, the axes of the two telescopic means 3 connected to said reduction plates 4, which are symmetrical to each other, are collinear. I.e. the axes of the two telescopic devices 3 are collinear and the telescopic directions are opposite.

In a more preferred embodiment, a side of the lower end of the speed reducing plate 4 away from the balancing weight 1 is provided with a rounded corner.

In a more preferred embodiment, the speed reduction plate 4 is an elastic plate. Because the middle part of reducing plate 4 is connected to the flexible end of telescoping device 3, when telescoping device 3 promotes reducing plate 4 to be close the track and slows down, at first the fillet contacts the track face, and produce certain frictional force, when telescoping device 3 continues to extend, reducing plate 4 begins bending deformation, lead to more reducing plate 4 surface and track contact and bigger contact pressure, thereby produce bigger frictional force, strengthen the deceleration effect, when telescoping device 3 shortens, the reducing plate 4 that the elastic plate was made releases deformation and resumes initial state (straight board), make the friction progressively reduce, prevent that elevator car speed from taking place suddenly in the deceleration process, cause passenger panic.

In a more preferred embodiment, friction layers are arranged on the surfaces of the speed reducing plate 4 and the track 2, which are contacted with each other. The friction layer may be a friction coating layer attached to a surface of the speed reduction plate 4 and the rail 2 that are in contact with each other, or a friction surface in which the contact surface is made uneven, or the like.

In a more preferred embodiment, the maximum extension of the telescopic means 3 is greater than or equal to the distance between the reduction plate 4 and the rail 2.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides an elevator decelerator, includes balancing weight (1) and installs track (2) of balancing weight (1), its characterized in that still including be used for monitoring balancing weight (1) speed sensor, install in telescoping device (3) on balancing weight (1) with install in the reducing gear of the flexible end of telescoping device (3), reducing gear install in between track (2) with balancing weight (1), speed sensor with telescoping device (3) signal connection.

2. Elevator speed reducer according to claim 1, characterized in that the speed reducer assembly comprises a plurality of speed reducer plates (4) connected with the counterweight (1), the speed reducer plates (4) being in one-to-one correspondence with the telescopic ends of the telescopic device (3).

3. The elevator speed reducer according to claim 2, wherein the speed reducer (4) comprises an upper speed reducer (401) and a lower speed reducer (402), the upper end of the upper speed reducer (401) is rotatably connected with the upper end of the counterweight (1), and the lower end of the lower speed reducer (402) is rotatably connected with the lower end of the counterweight (1).

4. Elevator speed reducing device according to claim 2, characterized in that the speed reducing plate (4) on the counterweight (1) is arranged symmetrically with respect to the symmetry plane of the counterweight (1).

5. Elevator speed reducer according to claim 2, characterized in that the speed reducer plates (4) are connected to the counterweight (1) in a pairwise symmetrical arrangement, two mutually symmetrical speed reducer plates (4) are connected to the counterweight (1) by means of a telescopic device (3) respectively, and the two telescopic devices (3) connected to the mutually symmetrical speed reducer plates (4) run synchronously.

6. Elevator speed reducer according to claim 2, characterized in that the axes of the two telescopic devices (3) connected to two speed reducers (4) symmetrical to each other are collinear.

7. Elevator speed reducer according to claim 2, characterized in that the side of the lower end of the speed reducer (4) facing away from the counterweight (1) is rounded.

8. Elevator speed reducer according to claim 2, characterized in that the speed reducer plate (4) is an elastic plate.

9. Elevator speed reducer according to claim 2, characterized in that the speed reducer (4) and the rail (2) are provided with friction layers on their surfaces of mutual contact.

10. Elevator speed reducing device according to claim 2, characterized in that the maximum extension of the telescopic device (3) is greater than or equal to the distance between the speed reducing plate (4) and the rail (2).