CN213037204U

CN213037204U - Elevator buffer

Info

Publication number: CN213037204U
Application number: CN202021643773.9U
Authority: CN
Inventors: 周甚; 刘仲新; 汤均鹏
Original assignee: Guangzhou Huadu Tongyong Group Co ltd
Current assignee: Guangzhou Huadu Tongyong Group Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-04-23
Anticipated expiration: 2030-08-10

Abstract

An elevator buffer comprises a cylinder base, a telescopic rod matched with the cylinder base and a stroke trigger assembly; the top of telescopic link is equipped with the end cover, the stroke triggers the subassembly including fixing travel switch, the first body of rod and the second body of rod on the jar seat, the upper end of the first body of rod is fixed on the end cover, and the lower extreme of the first body of rod is connected with the lower extreme of the second body of rod, the second body of rod includes vertical portion, establishes the trigger portion at vertical portion lower extreme and establishes the connecting portion in vertical portion upper end, the contained angle between trigger portion and the first body of rod is the acute angle, and vertical portion is parallel to each other with the first body of rod, and connecting portion are connected with the first body of rod, and the inclined plane and the travel switch cooperation in the. The utility model discloses utilize the combination of two body of rods to trigger travel switch, the combination bending resistance of two body of rods is better, can bear great impact force and unbent, ensures that its normal process of moving down can trigger travel switch.

Description

Elevator buffer

Technical Field

The utility model relates to an elevator, especially, elevator buffer.

Background

With the improvement of living standard of people and the rapid development of the house and land industry, the installation quantity of the elevators is increased explosively, the failure probability of the elevators is continuously improved, and therefore people pay more and more attention to the operation safety of the elevators. The elevator buffer is the last safety device for protecting life or goods safety when the elevator fails, and when the car or the counterweight drops or rushes at overspeed and the overspeed governor and the safety gear can not complete the functions.

At present, the elevator buffer is mainly a hydraulic buffer, and the basic working principle of the elevator buffer can be referred to related data, and the details are not repeated herein. For the buffer, there are two main roles: firstly, the elevator car or the counterweight can play an absolute safety buffering role when falling at a high speed, so that the personal safety of passengers is ensured to the maximum extent, and the damage to goods and elevator components is reduced as much as possible; and secondly, according to the safety requirement of the elevator operation, when the car or the counterweight falls and the buffer is hit, the power supply of the elevator tractor can be automatically cut off. In the mechanism for automatically cutting off the power supply of the hydraulic buffer of the elevator, which is produced in the current market, after the buffer piston is compressed, a switch contact rod fixed on a piston end cover moves downwards to touch a normally-closed travel switch arranged on a cylinder body, so that the power supply of the elevator is cut off. For example, chinese patent publication No. CN105129571A discloses an automatic power-off mechanism for an elevator buffer, which comprises a contact switch, a countersunk through hole and a proximity switch, wherein the contact switch comprises a rod cap and a switch contact rod, a return spring is sleeved on the switch contact rod, the contact switch is correspondingly matched with the countersunk through hole and can freely move up and down, and an induction end of the proximity switch points to the vertical direction in which the contact switch moves up and down. The switch contact rod is only provided with a single rod, and can be bent when being subjected to larger impact force instantly, and the bending direction of the switch contact rod is uncertain, so that the proximity switch can not be triggered, and finally the elevator is in danger of falling.

Disclosure of Invention

The utility model aims to solve the technical problem that an elevator buffer is provided, solve the technical problem that prior art exists.

In order to solve the technical problem, the technical scheme of the utility model is that: an elevator buffer comprises a cylinder base, a telescopic rod matched with the cylinder base and a stroke trigger assembly; the top of telescopic link is equipped with the end cover, the stroke triggers the subassembly including fixing travel switch, the first body of rod and the second body of rod on the jar seat, the upper end of the first body of rod is fixed on the end cover, and the lower extreme of the first body of rod is connected with the lower extreme of the second body of rod, the second body of rod includes vertical portion, establishes the trigger portion at vertical portion lower extreme and establishes the connecting portion in vertical portion upper end, the contained angle between trigger portion and the first body of rod is the acute angle, and vertical portion is parallel to each other with the first body of rod, and connecting portion are connected with the first body of rod, and the inclined plane and the travel switch cooperation in the. The utility model discloses utilize the combination of two body of rods to trigger travel switch, the combination bending resistance of two body of rods is better, can bear great impact force and unbent, ensures that its normal process of moving down can trigger travel switch.

As an improvement, the upper end of the first rod body is bent by 90 degrees and then is connected with the end cover.

As an improvement, the end cover is provided with a rubber mat.

As an improvement, the lower end of the second rod body is connected with the lower end of the first rod body in a welding mode, and the upper end of the second rod end is connected with the first rod body in a welding mode.

As an improvement, the lower end of the first rod body is connected with the lower end of the second rod body in a bending mode, and the upper end of the second rod body is connected with the first rod body in a welding mode after being bent for 90 degrees.

As an improvement, the travel switch is fixed on a mounting seat, and the mounting seat is fixed on the cylinder seat through a hoop.

As an improvement, the mounting seat is provided with a guide groove for guiding the first rod body.

Compared with the prior art, the utility model the beneficial effect who brings is:

the utility model discloses utilize the combination of two body of rods to trigger travel switch, the combination bending resistance of two body of rods is better, can bear great impact force and unbent, ensures that its normal process of moving down can trigger travel switch.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a perspective view of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, an elevator buffer comprises a cylinder base 1, a telescopic rod 2 matched with the cylinder base 1 and a stroke trigger assembly 5. The hydraulic cylinder is characterized in that the cylinder base 1 and the telescopic rod 2 are matched with a stroke hydraulic cylinder, a buffer spring 6 is sleeved outside the telescopic rod 2, an end cover 3 is arranged at the top of the telescopic rod 2, a rubber pad 4 is arranged on the end cover 3, and the buffer spring 6 is located between the cylinder base 1 and the end cover.

As shown in fig. 1 and 2, the stroke trigger assembly includes a stroke switch 53 fixed on the cylinder base 1, a first rod 51 and a second rod 52. The first rod body 51 is vertical and parallel to the telescopic rod 2, the upper end of the first rod body 51 is bent by 90 degrees and then fixed on the end cover, the lower end of the first rod body 51 is connected with the lower end of the second rod body 52, the lower end of the first rod body 51 can be connected with the lower end of the second rod body 52 through welding, and the first rod body can also be connected with the second rod body 52 through bending. The second rod body 52 comprises a vertical part 521, a triggering part 522 arranged at the lower end of the vertical part 521 and a connecting part 523 arranged at the upper end of the vertical part 521, an included angle between the triggering part 522 and the first rod body 51 is an acute angle, an included angle between the triggering part 522 and the vertical part 521 is an obtuse angle, the vertical part 521 and the first rod body 51 are parallel, an included angle between the connecting part 523 and the vertical part 521 is 90 degrees, and the connecting part 523 is welded with the side surface of the first rod body 51 after being bent; the inclined surface of the trigger portion 522 is engaged with the travel switch 53, and when the second rod 52 moves down, the inclined surface of the trigger portion 522 contacts the travel switch 53, thereby triggering the travel switch 53. Travel switch 53 is fixed on mount pad 54, mount pad 54 is fixed on cylinder base 1 through clamp 55, be equipped with the guide way for first body of rod 51 direction on the mount pad 54, guarantee that first body of rod 51 and second body of rod 52 can vertically reciprocate

The utility model discloses utilize the combination of two body of rods to trigger travel switch 53, the combination bending resistance of two body of rods is better, can bear great impact force and unbent, ensures that its normal process of moving down can trigger travel switch 53.

Claims

1. An elevator buffer comprises a cylinder base, a telescopic rod matched with the cylinder base and a stroke trigger assembly; the top of telescopic link is equipped with end cover, its characterized in that: the stroke trigger assembly comprises a stroke switch fixed on the cylinder base, a first rod body and a second rod body, the upper end of the first rod body is fixed on the end cover, the lower end of the first rod body is connected with the lower end of the second rod body, the second rod body comprises a vertical portion, a trigger portion arranged at the lower end of the vertical portion and a connecting portion arranged at the upper end of the vertical portion, an included angle between the trigger portion and the first rod body is an acute angle, the vertical portion is parallel to the first rod body, the connecting portion is connected with the first rod body, and an inclined plane on the trigger portion is matched with the stroke switch.

2. An elevator buffer as defined in claim 1, wherein: the upper end of the first rod body is bent by 90 degrees and then is connected with the end cover.

3. An elevator buffer as defined in claim 1, wherein: and the end cover is provided with a rubber mat.

4. An elevator buffer as defined in claim 1, wherein: the lower end of the second rod body is connected with the lower end of the first rod body in a welding mode, and the upper end of the second rod end is connected with the first rod body in a welding mode.

5. An elevator buffer as defined in claim 1, wherein: the lower end of the first rod body is connected with the lower end of the second rod body in a bending mode, and the upper end of the second rod body is connected with the first rod body in a welding mode after being bent for 90 degrees.

6. An elevator buffer as defined in claim 1, wherein: travel switch fixes on the mount pad, the mount pad passes through the clamp to be fixed on the jar seat.

7. An elevator buffer as defined in claim 6, wherein: and a guide groove for guiding the first rod body is formed in the mounting seat.