CN202657792U

CN202657792U - Integrated rebounce-proof elevator spring buffer

Info

Publication number: CN202657792U
Application number: CN 201220273439
Authority: CN
Inventors: 彭栓栓
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-12
Filing date: 2012-06-12
Publication date: 2013-01-09
Anticipated expiration: 2022-06-12

Abstract

The utility model discloses an integrated rebounce-proof elevator spring buffer which can prevent people in an elevator from being hurt. Two layers of lift car base plates are arranged in a lift car of the elevator, the base plates are an upper-layer lift car base plate and a lower-layer lift car base plate, the lower-layer lift car base plate and the lift car are connected into a whole fixedly, a clutch device is arranged between the upper-layer lift car base plate and the lift car, a spring buffer device is installed between the two layers of the lift car base plates, a safety valve is arranged on a lower side of the upper-layer lift car base plate, and a clutch button is arranged in the lift car. When the elevator has a failure and falls freely, a person in the elevator only needs to press the clutch button, the upper-layer lift car base plate is separated from the lift car and is connected with the spring buffer device integrally, when the elevator is stopped suddenly, the buffer device can achieve a buffer function, people in the elevator is prevented from direct impact, and when the spring buffer device is compressed to a limited position, the safety valve clamps the device, so that the rebounce of the upper-layer lift car base plate is avoided.

Description

The anti-bounce-back of integral type elevator spring bumper

Technical field

The utility model is that a kind of elevator breaks down and prevents the shock absorber that human body is injured in the free fall process, can prevent that especially elevator from breaking down when arriving cut before the pit in the free fall process to people's injury.

Background technology

At present, known elevator spring bumper is last link of safety system in the elevator decoration, is installed in the pit, break down at elevator and play the effect of buffering when squatting the end, thereby the people of alleviating in elevator or the elevator avoids direct bump.But when arriving before the pit cut in elevator breaks down the free fall process, existing elevator spring bumper does not then have any effect.

Secondly, because the car total quality is larger, when elevator breaks down when squatting the end, existing elevator spring bumper buffering effect is not obvious.

The 3rd, spring bumper is after being clashed into, the kinetic energy of car or counterweight and potential energy are converted into the elastic deformation energy of spring, because the antagonistic force of spring slows down car and counterweight, when spring-compressed behind end position, the spring of elevator spring bumper is wanted the elastic deformation energy in the buffer release process, and car still will rebound to rise and produce bump, and velocity of impact is higher, bounce-back speed is larger, and therefore existing elevator spring bumper can only be applicable to the elevator that command speed is not more than 1m/s.

Summary of the invention

For above 3 deficiencies, the utility model provides the anti-bounce-back of a kind of integral type elevator spring bumper, when elevator breaks down free fall, can prevent that not only human body is injured, and buffering effect is obvious, and is applicable to command speed greater than the elevator of 1m/s.

The technical scheme that its technical matters that solves the utility model adopts is: two-layer car floor is set in lift car, be upper strata car floor and lower floor's car floor, lower floor's car floor and car are fixedly connected into an integral body, an arrangement of clutch is set between upper strata car floor and the car, mounting spring shock absorber between the two-layer car floor, car upper strata base plate downside arranges safety valve, and the clutch button is set in the car.When elevator breaks down free fall, people in the elevator only need click the clutch button, then car upper strata base plate separates with car, be linked to be an integral body with spring bumper, when the elevator cut, spring bumper just can play the effect of buffering, thereby the people in the alleviation elevator avoids direct bump, when spring bumper was compressed to end position, safety valve blocked it, thereby prevented the base plate bounce-back of car upper strata.Represent suffered the making a concerted effort of people with F, F ＇ represents the elastic force that the people is suffered, according to Hook's law, F ＇=kx, wherein k is constant, it is the stiffness factor of spring, x is the length of spring-compressed, so when spring bumper was compressed to end position, spring-compressed length was maximum, the elastic force F ＇ maximum that the people is suffered, the F that makes a concerted effort that the people is suffered simultaneously is also maximum.The total mass that represents the people with m, end speed when v represents that car is done the movement of falling object, according to conservation of energy theorem, the car cut is compressed to spring bumper in the process of end position (quality of ignoring car upper strata base plate), people's kinetic energy and gravitional force will all be converted into the elastic deformation energy of spring, that is: mv ²+ mgx _Max=kx _Max ², release x _Max=, the suffered maximum of the old friend F=F ＇-mg=that makes a concerted effort.Suppose to do the movement of falling object when elevator breaks down, according to movement of falling object rule, h=gt ², v=gt, wherein h is that elevator breaks down and freely falls to the vertical distance that descends in the elevator cut process, t is the elevator movement of falling object time, releases v ²=2gh, the suffered maximum of the old friend F=that makes a concerted effort, perpendicular direction are upwards.

The beneficial effects of the utility model are, can protect the personal safety of the people in the elevator in elevator breaks down the free fall process, and the people in the elevator only need to click the clutch button, and are simple to operate.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is constructional drawing of the present utility model under the elevator normal operating condition.

Fig. 2 is constructional drawing of the present utility model after the people in the elevator presses the clutch button.

Fig. 3 is spring bumper constructional drawing of the present utility model when being compressed to end position.

(1) clutch button among the figure, (2) arrangement of clutch, (3) car upper strata base plate, (4) spring bumper, (5) safety valve.

The specific embodiment

State when Fig. 1 represents that elevator normally moves.

In Fig. 2, when elevator broke down, the people in the elevator pressed clutch button (1), and arrangement of clutch this moment (2) makes car upper strata base plate (3) separate with car, and car upper strata base plate (3) becomes an integral body with spring bumper (4) after separating.

In Fig. 3, when spring bumper was compressed to end position, safety valve (5) was main with its card, prevented car upper strata base plate (3) bounce-back.

Claims

1. an integral type is prevented bounce-back elevator spring bumper, it is that two-layer car floor is set in lift car, be upper strata car floor and lower floor's car floor, lower floor's car floor and car are fixedly connected into an integral body, an arrangement of clutch is set between upper strata car floor and the car, mounting spring shock absorber between the two-layer car floor, car upper strata base plate downside arranges safety valve, the clutch button is set in the car, it is characterized in that: two-layer car floor is set in the lift car, and spring bumper is installed between the two-layer car floor, rather than is installed in pit.