CN203392676U

CN203392676U - Spring assembly for balance of elevator operation

Info

Publication number: CN203392676U
Application number: CN201320272317.1U
Authority: CN
Inventors: 姚长云
Original assignee: Individual
Current assignee: Wuhan Tianyu Elevator Industry Ltd By Share Ltd
Priority date: 2013-05-17
Filing date: 2013-05-17
Publication date: 2014-01-15
Anticipated expiration: 2023-05-17

Abstract

The utility model provides a spring assembly for the balance of elevator operation. Two tension springs are installed on a wall between elevator counterweight rails, and the springs are stretched up and down by a counterweight frame during operation to offset the weight difference generated by hoist ropes due to the up-and-down movement of a lift car so that the balance of elevator operation is achieved, a balance chain can be replaced by the springs, and abnormal sounds generated by the balance chain during the elevator operation can be eliminated.

Description

A kind of spring assembly for elevator operation balance

One, technical field:

The utility model is a kind of spring assembly for elevator operation balance, and it relates to a kind of elevator of vertical lift.

Two, technical background:

Elevator is the vehicle that in modern society, people can not leave, national Specification: in the elevator more than eight floors, balancing chain must be installed, its effect is the weight difference bringing because car moves up and down for making up, but balancing chain in use exists several problems: the one, in cage operation process, due to the swing of chain, easily produce rocking of abnormal sound and car; The 2nd, chain during along with car movement, exists the danger being hung up.

Three, the content of utility model:

The utility model just can address the above problem, it is by two springs are installed on this face wall of counterweight in hoistway, by counterweight frame up-down stretch spring when moving, offset the weight difference being produced by hoist ropes because of car up-downgoing, thereby be used for reaching the effect of balance elevator operation.

Technical solutions of the utility model: a kind of spring assembly for elevator operation balance, it comprises the first spring, the second spring, it is characterized in that: the first spring and the second spring are all arranged on the wall between Elevator weight sensor guide rail, and the line of centers of two springs lays respectively at the both sides of counter weight guide track line of centers; One end of the first described spring is fixed on the wall between well headroom counter weight guide track by annex, and the other end is supported on the wall between the counter weight guide track of hoistway middle part by annex; The first spring only can be pulled down and extend hoistway bottom by counterweight frame; One end of the second described spring is fixed on the wall between the counter weight guide track of hoistway bottom by annex, and the other end is supported on the wall between the counter weight guide track of hoistway middle part by annex; The second spring only can be upwards stretched to well headroom by counterweight frame.

Four, accompanying drawing explanation:

Fig. 1 is the balancing chain installation site figure schematic diagram of existing elevator.

Fig. 2 is that balance spring is installed schematic diagram on the wall.

Fig. 3 is that balance is to focusing on the schematic diagram of pit position.

Fig. 4 is to focusing on the schematic diagram of well headroom position.

Five, the specific embodiment:

Below by embodiment also by reference to the accompanying drawings, principle of work of the present utility model is further described:

According to the principle of 11 semi-load of car and counterweight 14 balances, the load carrying ability of take is below analyzed its principle of work as the elevator of 1000 kilograms: see Fig. 1, (in figure, not drawing machine room main frame)

If: the weight of car 11 is M kilogram;

The weight of counterweight 14 is N kilogram;

The weight of hoist ropes 12 is 2m kilogram;

The weight of balancing chain 13 is 2n kilogram;

Pulling force during spring total length is F kilogram.

: 1, when car has during in intermediate floor and semi-load:

M+500+m+n=N+m+n (m≈n)

That is: M+500=N------------------------1. (load of main frame be about rated load 5%)

2, when car has when up at bottom and at full load:

M+1000+2m=N+2n

That is: M+1000=N-------------------2. (load of main frame is 500 kilograms)

3, when car has when top layer zero load is descending:

M+2n=N+2m

That is: M+0=N-------------------------3. (load of main frame is 500 kilograms)

If now balancing chain (3) is changed into two springs (1), (3).

: 1, when car has during in intermediate floor and semi-load: (seeing Fig. 2)

M+500+m=N+m

2, when car is at bottom and fully loaded have when up: (seeing Fig. 4)

M+1000+2m=N+F (making F=2m)

That is: M+1000=N------------------------2. (load of main frame is 500 kilograms)

3, when car has when top layer zero load is descending: (seeing Fig. 3)

M=N+2m-F (making F=2m)

That is: M+0=N--------------------------3. (load of main frame is 500 kilograms)

In brief: when the up counterweight of car is crossed intermediate floor, start the first spring 1 (seeing Fig. 3) always toward drop-down; When the descending counterweight of car, cross intermediate floor and start the second spring 3 (seeing Fig. 4) up to draw always, so just offset the weight difference that the operation because of car is produced by hoist ropes, thereby met three equatioies above.

As can be seen here, balancing chain change into two springs on the operation of main frame without any impact, but just can eliminate the deficiency that balancing chain brings like this, meanwhile, can also save a large amount of steel.

The fixing annex on the wall of counterweight snap hook of the present utility model and balance spring, does not all draw in figure.

Spring described in the utility model is extension spring, and its length can highly be made according to the operation of elevator, and also sectional is made, and can calculate by F=2m the design parameter of spring.During installation, one end of two springs need to be fixed on the bottom of counterweight one side and the wall at top, the other end of spring need to be done an arch brace at the middle part of hoistway, and with iron on counterweight hook corresponding, when stretching respectively that can be noiseless when focusing on operation with depart from two balance springs.

In addition, also must segmentation some rubber and plastic sleeve pipes be installed spring is fixed on the wall of hoistway, the generation abnormal sound in case spring is beated.

Claims

1. the spring assembly for elevator operation balance, it comprises the first spring (1), the second spring (3), it is characterized in that: the first spring (1) and the second spring (3) are all arranged on the wall between Elevator weight sensor guide rail, and the line of centers of two springs lays respectively at the both sides of counter weight guide track line of centers; One end of described the first spring (1) is fixed on the wall between well headroom counter weight guide track (2) by annex, and the other end is supported on the wall between hoistway middle part counter weight guide track (2) by annex; The first spring (1) only can be pulled down and extend hoistway bottom by counterweight frame (4); One end of described the second spring (3) is fixed on the wall between hoistway bottom counter weight guide track (2) by annex, and the other end is supported on the wall between hoistway middle part counter weight guide track (2) by annex; The second spring (3) only can be upwards stretched to well headroom by counterweight frame (4).