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1、 通过电器触点使电梯停止运行的管理办法1 限速器一安全钳系统工作原理1 speed limiter is a safety clamp system principle of work 限速器是限制电梯运行速度的装置,当轿厢上行或下行超速时,通过电器触点使电梯停止运行。当下行超速,电器触点动作仍不能使电梯停止,速度超过电梯额定速度115%以后,限速器机械动作,拉动安全钳夹住导轨将轿厢制停;当断绳造成轿厢或对重坠落时,也可由限速器的机械动作拉动安全钳,使轿厢制停在导轨上。限速器按动作原理可分为摆捶式和离心式两种,限速器一般安装在机房。安全钳按结构和工作原理分为瞬时安全钳和渐近式安全钳,安全钳一般
2、安装在轿架的底梁,成对地同时作用在导轨上。Speed limiter is to restrict the elevator running speed of the device, when the car speeding upward or downward, through electrical contact the elevator stops running. The line speed, electric contact action still cannot make the lift stop, speed is more than 115% of rated speed
3、, speed limiter mechanical http:/ http:/ http:/ http:/ action, pull the safety clamps live guide will capsules to stop; When broken rope capsules or heavy fall, can also be pulled by the mechanical action of speed limiter safety forceps, make the car to stop on the rail. Speed limiter according to a
4、ction principle can be divided into the type of punching is placed and centrifugal type two kinds, speed limiter is generally installed in the computer room. Safety clamp according to the structure and working principle are instant asymptotic type safety clamp, pliers and security clamp is generally
5、 installed in the car at the bottom of the beam, in pairs and role on the guide rail. 2 限速器一安全钳系统检验中发现的问题2 speed limiter is a safety clamp system problems found during the inspection 在对限速器一安全钳系统的检验中,发现部分电梯由于维护保养不善,致使该安全装置根本达不到正常的工作要求,主要存在下列问题。At the safety gear for the speed limiter system inspectio
6、n, http:/ http:/ http:/ http:/ found that parts of the elevator due to improper maintenance, cause the normal work of the security device you never even asked, mainly exist the following problems. (1)因限速器弹簧长期处于反复伸缩状态,使其整定动作速度改变。(1) because of the governor spring in repeated expansion state for a lon
7、g time, make its setting action speed change. (2)转动部件长期缺油,阻力增大致使离心甩动部分动作不灵活。(2) the moving parts are long-term lack of oil, increase resistance to the centrifugal part was not flexible. (3)由于钢丝绳自身的变化延伸,造成张紧装置触地,使钢丝绳张力不够,发生打滑。(3) due to the change of steel wire rope itself, causing tensioner touchdow
8、n, wire rope tension is not enough, skid. http:/ http:/ http:/ http:/ (4)安全钳的连杆拉臂传动部分缺油、锈蚀,致使提升力大大超过 300N。Safety gear (4) the link arm drive part of the lack of oil, rust, the lifting force more than 300 n. (5)主动杠杆末端与安全钳联动开关距离过大,拉臂提起时,开关不能同时动作。(5) active safety gear lever end with linkage switch dis
9、tance is too large, arm lift, the switch cant move at the same time. (6)楔块与导轨侧工作面间隙过大,在连杆提起时,楔块卡不住导轨。(6) gap of wedge and the guide rail side face is too big, in the connecting rod, the wedge card guide. (7)楔块内油污过多,松开拉臂后楔块不能复位,造成导轨受损。(7) wedge of excessive oil wedge cant reset after loosen the http:
10、/ http:/ http:/ http:/ arm, damaged guide rail. 这些问题的存在不仅使限速器一安全钳系统成了摆设,而且容易使人产生心理麻痹,潜在危害更大。These problems not only make the speed limiter is a safety clamp system became a decoration, but also easy to make the person produces psychological paralysis, and potentially more harmful. 3 限速器一安全钳系统失效原因分析3
11、 speed limiter is a safety clamp system failure cause analysis (1)限速器绳与轮磨擦力不够,当限速器动作时,限速器钢丝绳在限速器轮槽内打滑提不动安全钳,造成失效。(1) the governor rope wheel friction force is not enough, when the speed limiter action, governor rope at speed limiter wheel sliding groove motionless safety forceps, caused the failure.
12、 http:/ http:/ http:/ http:/ (2)在用的电梯,由于限速器轮槽的磨损,限速器钢丝绳的位置有所下降, 塑料土工格栅使限速器的夹绳钳接触不到钢丝绳或制动力不够,造成限速器钢丝绳在轮槽内打滑而失效。(2) in the elevator, due to the speed limiter wheel groove wear and tear, the position of the governor rope fell, make speed limiter clip cord clamp can not contact with the steel wire rope
13、or braking force is insufficient, governor rope groove of the wheels skid caused failure. (3)新安装的电梯,限速器安装方向错误。当电梯向下运行时,限速器夹绳钳不能够夹住限速器钢丝绳;反之,当电梯向上运行时,夹绳钳反倒夹住钢丝绳造成失效。(3) the new elevator installation, speed limiter installed the wrong direction. When the elevator running down, speed limiter clip cord
14、clamp cant grip the speed limiter wire rope; Conversely, when the elevator running up, clip cord clamp clamp wire rope caused by failure. http:/ http:/ http:/ http:/ (4)限速器动作时,由于弹簧张力大以及机械部件的卡壳等原因,导致限速器的动作速度大于电梯额定速度的115%。(4) speed limiter action, as well as the mechanical parts stuck because of the l
15、arge spring tension, etc. Reason, lead to the speed limiter action speed is greater than 115% of the rated speed. (5)限速器轮轴的油污增加了阻力,影响其动作速度。(5) the speed limiter wheel axle oil increased resistance, affect its movement speed. (6)安全钳钳口内有沙子、灰尘、油泥等异物,安全钳楔块夹不住导轨,轿厢在导轨上继续向下滑动造成失效。(6) security clamp jaw with sand, dust, sludge, such as foreign body, security clamp wedge clamp can guide rail, the car continued to slide down cause failure on t
