WO2014008715A1 - 铰接型悬浮液压立柱 - Google Patents

铰接型悬浮液压立柱 Download PDF

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Publication number
WO2014008715A1
WO2014008715A1 PCT/CN2012/082162 CN2012082162W WO2014008715A1 WO 2014008715 A1 WO2014008715 A1 WO 2014008715A1 CN 2012082162 W CN2012082162 W CN 2012082162W WO 2014008715 A1 WO2014008715 A1 WO 2014008715A1
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Prior art keywords
cylinder
cylinder body
clamp
living
ear seat
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PCT/CN2012/082162
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English (en)
French (fr)
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李炳文
王建武
洪建云
王振乾
孙泽勋
刘敏
李丽
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中国矿业大学
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Publication of WO2014008715A1 publication Critical patent/WO2014008715A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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  • the invention relates to an articulated suspension hydraulic column, in particular to a statically indeterminate hydraulic support for mechanized coal mining face.
  • the hydraulic support is one of the indispensable equipments for the comprehensive mechanized coal mining face in coal mines.
  • the hydraulic support used in coal mines is generally a four-link hydraulic support, also known as a four-link hydraulic support.
  • the upper and lower movement trajectories of the four-link hydraulic support top beam are a double-line. See the Coal Industry Press for details.
  • the hydraulic column used is a double telescopic hydraulic column and a single telescopic hydraulic column with an extension rod;
  • the double telescopic hydraulic column has complex structure, poor reliability, small supporting force, high cost and resistance. Problems such as poor impact and ground pressure; single-traction hydraulic column with extension rod has problems such as small working stroke, small use range, inconvenient adjustment, and poor impact resistance. Therefore, the development of new hydraulic column new technology products has important practical and historical significance.
  • the object of the present invention is to overcome the deficiencies in the prior art and to provide an articulated suspension hydraulic column with simple structure, large carrying capacity, large working stroke and low cost.
  • the hinged suspension hydraulic column of the invention comprises a living cylinder body, a cylinder block, an upper ear seat, a lower ear seat, a cylinder hoop, a clamp, a limit sleeve, a wedge retaining ring, a stud, a dustproof ring, a guide ring, and a third Through interface, interface, oil pipe, four-way, supporting steel and sealing components, oil plug; the upper ear seat and the living cylinder are welded together, the lower ear seat is welded with the cylinder body, and the cylinder ring and the cylinder are rounded The upper end is welded integrally, and the living cylinder is set in the cylinder; the outer cylinder of the living cylinder and the upper part of the cylinder are provided with a limiting sleeve, and the upper part of the limiting sleeve is provided with a stud, and the inner and outer circles of the limiting sleeve are respectively
  • the inner and outer circular limit sleeve sealing assemblies
  • a wedge ring is disposed on an outer circle of the contact surface of the stud and the limiting sleeve; an upper guiding ring is disposed in the inner circular groove of the limiting sleeve, and the outer circular groove of the clamp is disposed Lower guide ring.
  • the upper ear seat is provided with a hinged circular through hole, and the lower ear seat is provided with a hinged circular through hole; the stud is provided with a groove for installing a dustproof ring.
  • the invention is suitable for the static static fixed hydraulic support of the coal mine underground roof support.
  • the utility model has the advantages of simple structure, good safety, high reliability, large carrying capacity, large working stroke, convenient disassembly and installation, and impact resistance. It has strong ground pressure, wide application range, convenient adjustment, low cost and wide practicality.
  • Fig. 1 is a view showing the outline of the present invention.
  • Figure 2 is a cross-sectional structural view of the present invention.
  • the hinged suspension hydraulic column mainly has an upper ear seat 14, a lower ear seat 1, a living cylinder 7, a cylinder 2, a cylinder hoop 8, a limit sleeve 10, a wedge ring 16, and a screw.
  • Column 12 blind hole 13, clamp 5, dust ring 15, upper and lower guide rings 11, 4, three-way interface 18, interface 23, oil pipe 22, four-way 21, support steel bar 20 and sealing assembly 3, 6, 9, 17, oil block 19, 24, 25, 26, 27, 28 composition.
  • the upper ear seat 14 is welded integrally with the living cylinder 7 , and the upper ear seat 14 is provided with a hinged circular through hole 30 ; the lower ear seat 1 is welded integrally with the cylinder 2 , and the lower ear seat 1 is provided with a hinged shaft tact Hole 29.
  • the cylinder hoop 8 is integrally welded with the outer circumference of the upper end of the cylinder block 2, and the living cylinder body 7 is fitted in the cylinder block 2; the outer circumference of the living cylinder body 7 and the upper part of the inner circle of the cylinder block 2 are provided with a limiting sleeve 10, An upper guiding ring 11 is disposed in the inner groove of the limiting sleeve 10.
  • the upper end of the limiting sleeve 10 is provided with a stud 12, and the stud 12 can be made of a metal material, and can also be made of a non-metal material such as nylon, fiberglass or plastic.
  • the outer circumference of the contact surface of the stud 12 and the limiting sleeve 10 is provided with a wedge ring 16 , and the upper end surface of the stud 12 has a plurality of blind holes 13 , and the inner circle of the stud 12 and the outer circumference of the living cylinder 7 A dust seal 15 is provided on the contact surface.
  • the inner and outer circles of the limiting sleeve 10 are respectively provided with inner and outer circular limiting sleeve sealing assemblies 9, 17; the outer circumference of the living cylinder 7 and the lower part of the inner circle of the cylinder 2 are provided with a clamp 5, and the clamp 5 Installed in a recess formed in a lower portion of the outer circumference of the living cylinder 7, the clamp 5 is a two-half annular structure, and the lower guide groove 4 is disposed in the outer circular groove of the clamp 5; the upper and lower sides of the clamp 5
  • the upper and lower clamp seal assemblies 6 and 3 are respectively disposed at two ends; the lower guide ring 4 and the upper and lower clamp seal assemblies 6 and 3 form a sliding fit sealing relationship with the inner circumferential surface of the cylinder block 2; Steps, grooves and threads are provided, and a step sleeve 10, a wedge retaining ring 16, a stud 12 and an upper guiding ring 11 are arranged between the upper step of the inner circle of the cylinder 2, the groove
  • the smaller variable sealing cavity is formed by the outer circle of the living cylinder 7, the inner circle of the cylinder 2, the limiting sleeve 10, the inner and outer circular limiting sleeve sealing assemblies 9, 17 and the upper clamp sealing assembly 6;
  • the upper end of the outer circumference of the cylinder 2 is provided with a three-way interface 18 for connecting a small variable sealing cavity; three inlet and outlet holes of the three-way interface 18 are respectively provided with three oil plugs 19, 26, 27.
  • the high-pressure liquid is injected into the small variable sealing cavity of the column through the inlet and outlet through holes of the outer upper tee port 18 of the cylinder 2, and the column is relatively variable with the injection of the liquid.
  • the liquid in the sealed cavity is vented to the oil tank through the inlet and outlet through holes of the outer circular interface 23 of the cylinder 2, thereby achieving the purpose of lowering the column.
  • the column supports and lowers the column once, so that the hydraulic column completes a working cycle.

Abstract

一种铰接型悬浮液压立柱，活柱体（7）与上耳座（14）焊接为一体，缸体（2）与下耳座（1）焊接为一体，缸箍（8）与缸体（2）上部外圆焊接为一体；活柱体（7）下部套装在缸体（2）内，由活柱体（7）外圆、缸体（2）内圆、限位套（10）及密封组件包围形成较小可变密封腔体，由活柱体（7）内圆、缸体（2）内圆、上耳座（14）、下耳座（1）及密封组件包围形成较大可变密封腔体；缸体（2）外圆下部焊有接口、油管（22）和四通（21）并连通较大可变密封腔体，缸体（2）外圆上部焊有三通接口（18）并连通较小可变密封腔体；该液压支柱结构工艺简单，稳定性好，承载能力大，重量轻，成本低。

Description

铰接型悬浮液压立柱 技术领域
本发明涉及一种铰接型悬浮液压立柱,尤其适用于机械化采煤工作面的超静定液压支架。
 背景技术
液压支架是煤矿井下综合机械化采煤工作面必不可少的设备之一。目前煤矿使用的液压支架一般是四连杆结构的液压支架，也称四连杆液压支架，四连杆液压支架顶梁上、下的运动轨迹为一条双纽线，具体见煤炭工业出版社于1993年出版的《煤矿支护手册》第五篇第四章第二节内容和中国矿业大学出版社于2010年出版的“十一五”高等学校国家规划教材《矿山机械》一书中关于支护设备内容。由于四连杆液压支架的结构特点，其使用的液压立柱是双伸缩液压立柱和带加长杆的单伸缩液压立柱；双伸缩液压立柱存在着结构复杂、可靠性差、支撑力小、成本高、抗冲击地压能力差等问题；带加长杆的单伸缩液压立柱存在着工作行程小、使用范围小、调节不便、抗冲击地压能力差等问题。因此，研制新型的液压立柱新技术产品具有重要的现实意义和历史意义。
 技术问题
本发明的目的是克服已有技术中的不足，提供一种结构简单，承载能力大、工作行程大、成本低的铰接型悬浮液压立柱。
 技术解决方案
本发明的铰接型悬浮液压立柱，包括活柱体、缸体、上耳座、下耳座、缸箍、卡箍、限位套、楔挡圈、螺柱、防尘圈、导向环、三通接口、接口、油管、四通、支撑钢筋及密封组件、油堵；所述的上耳座与活柱体焊接为一体，下耳座与缸体焊接为一体，缸箍与缸体外圆上端焊接为一体，活柱体套装在缸体内；所述活柱体外圆与缸体内圆的上部设有限位套，限位套上部设有螺柱，限位套的内、外圆分别设有内、外圆限位套密封组件；所述活柱体外圆与缸体内圆的下部设有卡箍，卡箍的上、下两端分别设有上、下卡箍密封组件，由活柱体的外圆、缸体的内圆、限位套、卡箍、上卡箍密封组件和内、外圆限位套密封组件包围形成较小可变密封腔体；由活柱体的内圆、缸体的内圆、上耳座、下耳座及下卡箍密封组件包围形成较大可变密封腔体；所述的缸体的外圆下端设有连通较大可变密封腔体的接口，接口上设有油管，油管上设有四通；缸体的外圆上端设有连通较小可变密封腔体的三通接口。
所述的螺柱与限位套接触面的外圆上设有楔挡圈；所述的限位套内圆沟槽内设有上导向环，所述的卡箍外圆沟槽内设有下导向环。所述的上耳座设有铰接轴圆通孔，所述的下耳座上设有铰接轴圆通孔；所述的螺柱内开有安设防尘圈的沟槽。
 有益效果
本发明适用于煤矿井下顶板支护的超静定液压支架上，与现有技术相比，其结构简单，安全性好，可靠性强、承载能力大，工作行程大，拆卸安装方便，抗冲击地压能力强，使用范围宽，调节方便，成本低，具有广泛的实用性。
 附图说明
图1是本发明的外形结构图。
图2是本发明的剖视结构图。
图中：上耳座－14，下耳座－1，活柱体－7，缸体－2，缸箍－8，限位套－10，楔挡圈－16，螺柱－12，卡箍－5，防尘圈－15，三通接口－18，接口－23，油管－22，四通－21，支撑钢筋－20，上、下导向环－11、4，上、下卡箍密封组件－6、3，内、外圆限位套密封组件－9、17，油堵－19、24、25、26、27、28，盲孔－13，铰接轴圆通孔－30、29。
 本发明的实施方式
下面结合附图中的实施例对本发明作进一步的描述：
如图1、图2所示，铰接型悬浮液压立柱主要有上耳座14、下耳座1、活柱体7、缸体2、缸箍8、限位套10、楔挡圈16、螺柱12、盲孔13、卡箍5、防尘圈15、上、下导向环11、4、三通接口18、接口23、油管22、四通21、支撑钢筋20及密封组件3、6、9、17、油堵19、24、25、26、27、28组成。所述的上耳座14与活柱体7焊接为一体，上耳座14设有铰接轴圆通孔30；下耳座1与缸体2焊接为一体，下耳座1上设有铰接轴圆通孔29。缸箍8与缸体2上端外圆焊接为一体，活柱体7套装在缸体2内；所述活柱体7外圆与缸体2内圆的上部设有限位套10，所述的限位套10内圆沟槽内设有上导向环11，限位套10上端设有螺柱12，螺柱12可用金属材料制成，也可用尼龙、玻璃钢、塑料等非金属材料制成。所述的螺柱12与限位套10接触面的外圆上设有楔挡圈16，螺柱12的上端面上开有若干盲孔13，螺柱12内圆与活柱体7外圆接触面上设有防尘圈15。限位套10的内、外圆分别设有内、外圆限位套密封组件9、17；所述活柱体7外圆与缸体2内圆的下部设有卡箍5，卡箍5安装在活柱体7外圆下部开设的凹槽内，所述的卡箍5为两半圆环结构，卡箍5外圆沟槽内设有下导向环4；卡箍5的上、下两端分别设有上、下卡箍密封组件6、3；下导向环4和上、下卡箍密封组件6、3与缸体2内圆表面形成滑动配合密封关系；缸体2内圆上部设有台阶、沟槽及螺纹，缸体2内圆上部台阶、沟槽及螺纹与活柱体7外圆之间设有限位套10、楔挡圈16、螺柱12、上导向环11、防尘圈15及内、外圆限位套密封组件9、17；限位套10、螺柱12、上导向环11、内圆限位套密封组件9及防尘圈15与活柱体7外圆表面形成滑动配合密封关系。由活柱体7的外圆、缸体2的内圆、限位套10、内、外圆限位套密封组件9、17和上卡箍密封组件6包围形成较小可变密封腔体；所述的缸体2的外圆上端设有连通较小可变密封腔体的三通接口18；三通接口18的三个进出液通孔上分别设有三个油堵19、26、27。由活柱体7的内圆、缸体2的内圆、上耳座14、下耳座1及下卡箍密封组件3包围形成较大可变密封腔体；所述的缸体2外圆下端设有连通较大可变密封腔体的接口23、油管22及四通21，接口23与油管22焊接连通，油管22与四通21焊接连通，四通21的三个进出液通孔上分别设有三个油堵24、25、28，四通21与缸体2外圆表面之间设有支撑钢筋20。
悬浮液压立柱升柱时，高压液体通过缸体2外圆下部接口23的进出液通孔进入悬浮液压立柱的较大可变密封腔体，随着液体的注入，立柱的较小可变密封腔体的液体通过缸体2外圆上部三通接口18的进出液通孔排回油箱，从而达到升柱的目的。
悬浮液压立柱降柱时，高压液体通过缸体2外圆上部三通接口18的进出液通孔向立柱的较小可变密封腔体注入液体，随着液体的注入，立柱的较大可变密封腔体的液体通过缸体2外圆下部接口23的进出液通孔泄回油箱，从而达到降柱的目的。
高压液体每注入和泄出一次，立柱便支撑和降柱一次，这样液压立柱便完成一个工作循环。

Claims (5)

  1. 一种铰接型悬浮液压立柱，其特征在于：它包括活柱体（7）、缸体（2）、上耳座（14）、下耳座（1）、缸箍（8）、卡箍（5）、限位套（10）、楔挡圈（16）、螺柱（12）、防尘圈（15）、上、下导向环（11、4）、三通接口（18）、接口（23）、油管（22）、四通（21）、支撑钢筋（20）及密封组件（3、6、9、17）、油堵（19、24、25、26、27、28）；所述的上耳座（14）与活柱体（7）焊接为一体，下耳座（1）与缸体（2）焊接为一体，缸箍（8）与缸体（2）上端外圆焊接为一体，活柱体（7）套装在缸体（2）内；所述活柱体（7）外圆与缸体（2）内圆的上部设有限位套（10），限位套（10）上部设有螺柱（12），限位套（10）的内、外圆沟槽内分别设有内、外圆限位套密封组件（9、17）；由活柱体（7）的外圆、缸体（2）的内圆、限位套（10）、卡箍（5）、上卡箍密封组件（6）和内、外圆限位套密封组件（9、17）包围形成较小可变密封腔体；由活柱体（7）的内圆、缸体（2）的内圆、上耳座（14）、下耳座（1）及下卡箍密封组件（3）包围形成较大可变密封腔体；所述活柱体（7）外圆与缸体（2）内圆的下部设有卡箍（5），卡箍（5）的上下两端分别设有上、下卡箍密封组件（6、3），所述的缸体（2）的外圆下端设有连通较大可变密封腔体的接口（23），接口（23）与油管（22）焊接连通，油管（22）与四通（21）焊接连通；缸体（2）的外圆上端设有连通较小可变密封腔体的三通接口（18）；
  2. 根据权利要求1所述的铰接型悬浮液压立柱，其特征在于：所述的螺柱（12）与限位套（10）接触面的外圆上设有楔挡圈（16）。
  3. 根据权利要求1所述的铰接型悬浮液压立柱，其特征在于：所述的限位套（10）内圆沟槽内设有上导向环（11），所述的卡箍（5）外圆沟槽内设有下导向环（4）。
  4. 根据权利要求1所述的铰接型悬浮液压立柱，其特征在于：所述的上耳座（14）设有铰接轴圆通孔（30），所述的下耳座（1）上设有铰接轴圆通孔（29）。
  5. 根据权利要求1所述的铰接型悬浮液压立柱，其特征在于：所述的螺柱（12）内开有安设防尘圈（15）的沟槽。
PCT/CN2012/082162 2012-07-09 2012-09-27 铰接型悬浮液压立柱 WO2014008715A1 (zh)

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