CN109987474A - 一种浮动阀片式缓冲器 - Google Patents

一种浮动阀片式缓冲器 Download PDF

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CN109987474A
CN109987474A CN201910298510.4A CN201910298510A CN109987474A CN 109987474 A CN109987474 A CN 109987474A CN 201910298510 A CN201910298510 A CN 201910298510A CN 109987474 A CN109987474 A CN 109987474A
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plunger
floating valve
buffer
valve block
oil cylinder
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王迪
杨才俊
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SHANGHAI QINGPU ELEVATOR FITTINGS Co Ltd
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SHANGHAI QINGPU ELEVATOR FITTINGS Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/28Buffer-stops for cars, cages, or skips
    • B66B5/282Structure thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/19Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/348Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3482Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body the annular discs being incorporated within the valve or piston body
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/348Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3484Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of the annular discs per se, singularly or in combination
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/348Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3485Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

本发明公开了一种浮动阀片式缓冲器,包括用于提供缓冲介质的油缸、用于使缓冲介质产生流动的柱塞、用于调节缓冲介质流量的节流控制杆,其特征在于,还包括用于将柱塞复位的弹簧、浮动阀片及用于固定该浮动阀片的柱塞底座,用于通过缓冲介质的阻尼孔设于浮动阀片上,柱塞上同样设有用于通过缓冲介质的孔。本发明提供了一种能够使加工简便,但能满足缓冲器各项性能指标的结构,降低了缓冲器油缸组件中控制杆与油缸的同轴度精度要求,也降低了柱塞组件与油缸组件装配同轴度要求,减少加工难度,提高生产效率。

Description

一种浮动阀片式缓冲器
技术领域
本发明涉及一种浮动阀片式缓冲器,属于电梯控制技术领域。
背景技术
国内外缓冲器的结构形式很多,常用的有锥杆式(节流控制杆)、薄壁小孔式、气弹簧式等等。锥杆式和薄壁小孔式缓冲器采用液压油为缓冲介质,称为油压缓冲器;气弹簧式缓冲器采用气体为缓冲器介质,称为气弹簧缓冲器。
油压缓冲器如图1所示,其包括底部的油缸1,油缸1内设有节流控制杆2,油缸1上设有与之相配合且能相对于油缸1上下运动的柱塞3,节流控制杆2底部设有阻尼孔4,阻尼孔4与柱塞3相配合。
油压缓冲器的工作原理是:当轿厢或对重失控下降撞击到该油压缓冲器,使柱塞3向下运动,节流控制杆2控制液压油通过阻尼孔4的流量(节流)以达到均减速向下运动,随着柱塞3的向下运动,节流控制杆2与阻尼孔4的环状孔隙逐渐减小,导致制停力基本恒定,在接近行程末端时减速过程结束。在制停轿箱或对重过程中,其机械能转化为油的热能,即消耗了轿箱或对重的机械能。从而使轿厢或对重平稳制停。
由上述油压缓冲器的工作原理可知,节流控制杆2与阻尼孔4对缓冲性能起到关键作用,一般缓冲器的阻尼孔4与柱塞2为一体式结构,称为固定式柱塞组件(如图2所示),此种结构对油缸1和固定式柱塞组件的同轴度要求很高,加工时为满足油缸1和固定式柱塞组件同轴度精度要求,采取了较为繁琐的加工工艺,并配合使用定位工装才能保证精度要求,这样增加了缓冲器的生产成本。
发明内容
本发明所要解决的问题是:现有油压缓冲器加工工艺对精度要求高,生产成本大的问题。
为了解决上述问题,本发明提供了一种浮动阀片式缓冲器,包括用于提供缓冲介质的油缸、用于使缓冲介质产生流动的柱塞、用于调节缓冲介质流量的节流控制杆,其特征在于,还包括用于将柱塞复位的弹簧、浮动阀片及用于固定该浮动阀片的柱塞底座,用于通过缓冲介质的阻尼孔设于浮动阀片上,柱塞上同样设有用于通过缓冲介质的孔。
优选地,所述柱塞与油缸相配合,节流控制杆固定于油缸内,柱塞相对于油缸上下运动时,带动柱塞底座、浮动阀片相对于节流控制杆上下运动。
优选地,所述节流控制杆的顶端插设于柱塞底座、浮动阀片上的安装孔内。
优选地,所述浮动阀片上的阻尼孔位于其中心,回油孔均匀分布于阻尼孔外缘。
优选地,所述柱塞底座内设有用于限位浮动阀片卡簧。
优选地,所述浮动阀片与柱塞底座间隙配合。
优选地,所述柱塞底座的外缘设有导向环,导向环与油缸内壁的导槽相配合。
更优选地,所述导向环与柱塞底座之间设有密封圈。
优选地,当所述柱塞向下运动时,油缸内的缓冲介质从浮动阀片上的阻尼孔进入柱塞内时;当柱塞向上运动时,柱塞内的缓冲介质从浮动阀片上的阻尼孔流出柱塞,回到油缸内。
浮动阀片可以上下左右活动,节流控制杆控制液压油通过浮动阀片上阻尼孔,形成流量(节流)以达到均减速向下运动并制停。本发明提供了一种能够使加工简便,但能满足缓冲器各项性能指标的结构,降低了缓冲器油缸组件中控制杆与油缸的同轴度精度要求,也降低了柱塞组件与油缸组件装配同轴度要求,减少加工难度,提高生产效率。
与现有技术相比,本发明的有益效果在于:
1、所述浮动阀片中间位置有一个阻尼孔,在缓冲器工作时产生节流作用。
2、所述浮动阀片的外径无精度要求,降低加工精度;缓冲器工作时浮动阀片可四周移动,从而消除了其他零部件的精度要求。
3、所述浮动阀片上阻尼孔周边有若干小孔,当缓冲工作结束,柱塞向上回复,柱塞腔内的油快速从浮动控制板上小孔流入油缸腔内,有利于提高柱塞的回位时间。
附图说明
图1为现有油压缓冲器的结构示意图;
图2固定式柱塞组件的结构示意图;
图3本发明提供的浮动阀片式缓冲器的结构示意图;
图4为浮动阀片的结构示意图;
图5为图4的侧视图;
图6为本发明中的柱塞组件的结构示意图;
图7为图6中浮动阀片安装位置的局部放大图。
具体实施方式
为使本发明更明显易懂,兹以优选实施例,并配合附图作详细说明如下。
实施例
如图3-7所示,为本发明提供的一种浮动阀片式缓冲器,其包括用于提供缓冲介质的油缸1,油缸1内设有节流控制杆2,油缸1的上方设有柱塞3,柱塞3的下部与油缸1相配合,柱塞3底部设有柱塞底座7,柱塞底座7内安装一个浮动阀片6,浮动阀片6上设有阻尼孔4。节流控制杆2的顶端插在柱塞底座7、浮动阀片6上的阻尼孔4内。柱塞3与柱塞底座7外侧的连接处采用焊接连接。柱塞3与油缸1相配合,节流控制杆2固定于油缸1内,柱塞3相对于油缸1上下运动时,带动柱塞底座7、浮动阀片6相对于节流控制杆2上下运动。
将浮动阀片6安装在柱塞底座7内后,在其底部装入一个卡簧8,将浮动阀片6限位,柱塞底座7底部的内侧设有用于卡入卡簧8的凹槽。浮动阀片6与柱塞底座7间隙配合,即浮动阀片6与其外部的柱塞底座7、卡簧8之间存在间隙11。
如图4、5所示,浮动阀片6上的阻尼孔4位于其中心,回油孔6-1均匀分布于阻尼孔4外缘。
如图6所示,柱塞底座7的外缘设有导向环9,导向环9与油缸1内壁的导槽相配合。导向环9与柱塞底座7之间设有密封圈10。
当轿厢向下运动,压迫柱塞3使其向下运动,油缸1内的缓冲介质从浮动阀片6上的阻尼孔4进入柱塞3内,柱塞3内的缓冲介质从柱塞3上的孔3-1流出柱塞3,回到油缸1内;当轿厢向上运动时,柱塞3在弹簧5的作用下向上运动回复原位,柱塞3内的缓冲介质从浮动阀片6上的阻尼孔4流出柱塞3,回到油缸1内。柱塞3上的孔3-1起动平衡内外压力的作用,当孔3-1位于油缸1内,流经该孔3-1的介质为缓冲介质,当孔3-1位于油缸1外,流经该孔3-1的介质为空气。

Claims (9)

1.一种浮动阀片式缓冲器,包括用于提供缓冲介质的油缸(1)、用于使缓冲介质产生流动的柱塞(3)、用于调节缓冲介质流量的节流控制杆(2),其特征在于,还包括用于将柱塞(3)复位的弹簧(5)、浮动阀片(6)及用于固定该浮动阀片(6)的柱塞底座(7),用于通过缓冲介质的阻尼孔(4)设于浮动阀片(6)上,柱塞(3)上同样设有用于通过缓冲介质的孔(3-1)。
2.如权利要求1所述的浮动阀片式缓冲器,其特征在于,所述柱塞(3)与油缸(1)相配合,节流控制杆(2)固定于油缸(1)内,柱塞(3)相对于油缸(1)上下运动时,带动柱塞底座(7)、浮动阀片(6)相对于节流控制杆(2)上下运动。
3.如权利要求1或2所述的浮动阀片式缓冲器,其特征在于,所述节流控制杆(2)的顶端插设于柱塞底座(7)、浮动阀片(6)上的安装孔(6-1)内。
4.如权利要求1所述的浮动阀片式缓冲器,其特征在于,所述浮动阀片(6)上的阻尼孔(4)位于其中心,回油孔(6-1)均匀分布于阻尼孔(4)外缘。
5.如权利要求1所述的浮动阀片式缓冲器,其特征在于,所述柱塞底座(7)内设有用于限位浮动阀片(6)卡簧(8)。
6.如权利要求1或5所述的浮动阀片式缓冲器,其特征在于,所述浮动阀片(6)与柱塞底座(7)间隙配合。
7.如权利要求1所述的浮动阀片式缓冲器,其特征在于,所述柱塞底座(7)的外缘设有导向环(9),导向环(9)与油缸(1)内壁的导槽相配合。
8.如权利要求7所述的浮动阀片式缓冲器,其特征在于,所述导向环(9)与柱塞底座(7)之间设有密封圈(10)。
9.如权利要求1所述的浮动阀片式缓冲器,其特征在于,当所述柱塞(3)向下运动时,油缸(1)内的缓冲介质从浮动阀片(6)上的阻尼孔(4)进入柱塞(3)内时;当柱塞(3)向上运动时,柱塞(3)内的缓冲介质从浮动阀片(6)上的阻尼孔(4)流出柱塞(3),回到油缸(1)内。
CN201910298510.4A 2019-04-15 2019-04-15 一种浮动阀片式缓冲器 Withdrawn CN109987474A (zh)

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CN111594565A (zh) * 2020-06-22 2020-08-28 乐天电梯部件(浙江)有限公司 一种液压缓冲器
CN114291692A (zh) * 2021-10-29 2022-04-08 苏州东方富力电梯部件有限公司 一种新型电梯用油压缓冲器液压油节流设备

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CN106151622A (zh) * 2016-07-15 2016-11-23 上海空间推进研究所 一种能双向调压的平衡阀

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111594565A (zh) * 2020-06-22 2020-08-28 乐天电梯部件(浙江)有限公司 一种液压缓冲器
CN111594565B (zh) * 2020-06-22 2024-03-26 上海乐天电梯部件有限公司 一种液压缓冲器
CN114291692A (zh) * 2021-10-29 2022-04-08 苏州东方富力电梯部件有限公司 一种新型电梯用油压缓冲器液压油节流设备

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