CN208456651U - 一种用于大起伏工作面高端液压支架的伸缩梁 - Google Patents

一种用于大起伏工作面高端液压支架的伸缩梁 Download PDF

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CN208456651U
CN208456651U CN201820996731.XU CN201820996731U CN208456651U CN 208456651 U CN208456651 U CN 208456651U CN 201820996731 U CN201820996731 U CN 201820996731U CN 208456651 U CN208456651 U CN 208456651U
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extensible canopy
groove
top beam
jack
hydraulic support
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郝平凯
李贺
刘江晖
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LINZHOU HEAVY MACHINERY GROUP CO Ltd
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Abstract

本实用新型提供了一种用于大起伏工作面高端液压支架的伸缩梁，包括整体结构的顶梁、伸缩梁、伸缩梁千斤顶和护帮板，顶梁前端开有用于放置伸缩梁的凹槽腔体，所述伸缩梁上靠近伸缩梁千斤顶的一端开有凹槽Ⅰ，所述顶梁下方紧贴凹槽腔体开有用于放置伸缩梁千斤顶的凹槽Ⅱ，凹槽腔体和凹槽Ⅱ组成整体凹陷结构，凹槽Ⅰ使得伸缩梁千斤顶和伸缩梁整体位于顶梁内的凹陷结构中。与现有技术相比，本实用新型结构紧凑、合理，顶梁前端的厚度相对变薄，在不更换液压支架的前提下，即使工作面煤层厚度变化，只要更换为小直径的滚筒，即使行星轮不碰触到已收回的护帮板，仍可割到顶煤,顺利完成工作面煤矿的工采。

Description

一种用于大起伏工作面高端液压支架的伸缩梁
技术领域
本实用新型涉及液压支架技术领域，具体涉及一种用于大起伏工作面高端液压支架的伸缩梁。
背景技术
在当此综采技术已相当成熟的条件下，煤层较厚时使用高端液压支架，配套大直径的滚筒时，在割煤时大直径滚筒可很好的完成顶煤的切割。在煤层变薄的时候，需配套使用适用于小采高的液压支架配以小直径的滚筒来完成顶煤的切割。在同一工作面中，如果煤层变化较大，因大采高液压支架通常配套的是大直径的采煤机滚筒，即使更换小直径的采煤机滚筒，也无法完全适应薄煤层的开采。
现有的高端液压支架顶梁前端为平整结构，顶梁前端设有用于放置伸缩梁的凹槽腔体，伸缩梁为方形结构，伸缩梁千斤顶安装在顶梁的下方，伸缩梁和伸缩梁千斤顶安装时，伸缩梁和伸缩梁千斤顶与顶梁贴合的不够紧凑，它们之间空隙较大，使得顶梁前端的厚度增加，顶梁前端的厚度一般为500-600mm，甚至更厚。高端液压支架在煤矿中的使用已越来越多，煤层起伏也越来越复杂，高端液压支架大都需配套大直径的滚筒，但大直径滚筒对煤层起伏比较大的情况不适应，在工作面煤层变薄，大直径滚筒不适用的情况下，需换用小直径的滚筒，由于高端液压支架在护帮板收回时前端厚度较大，在行星轮接触到顶梁前部的护帮板后，因滚筒直径小，滚筒不能割到顶煤，这对支架的受力、前进及工作面状况都会产生很严重的影响。
发明内容
为解决因煤层变薄，大直径采煤机滚筒已不再适用，而小直径滚筒在常规高端液压支架的工作条件下，因行星轮在碰触已回收的护帮板，滚筒不能割到顶煤，从而对支架的受力、前进及工作面状况会产生影响的问题，本实用新型提供一种用于大起伏工作面高端液压支架的伸缩梁。
本实用新型的目的是以下述方式实现的：
一种用于大起伏工作面高端液压支架的伸缩梁，包括整体结构的顶梁1、伸缩梁2、伸缩梁千斤顶4和护帮板5，顶梁1前端开有用于放置伸缩梁2的凹槽腔体，所述伸缩梁2上靠近伸缩梁千斤顶4的一端开有凹槽Ⅰ3，所述顶梁1下方紧贴凹槽腔体开有用于放置伸缩梁千斤顶4的凹槽Ⅱ，凹槽腔体和凹槽Ⅱ组成整体凹陷结构，凹槽Ⅰ3使得伸缩梁千斤顶4和伸缩梁2整体位于顶梁1内的凹陷结构中。
所述凹槽Ⅰ3和凹槽Ⅱ均为弧形凹槽。
所述顶梁1在护帮板5完全收回时前端的厚度为396mm。
有益效果：与现有技术相比，本实用新型在不影响高端液压支架的所有功能的基础上，将平整的顶梁前端设计成前端具有凹陷结构，将伸缩梁和伸缩梁千斤顶都安装在凹陷结构中，使前部结构更加紧凑，有效节约空间，从而使顶梁前端的厚度变薄，使得在更换为小直径的滚筒后，即使行星轮不碰触到已收回的护帮板，小直径的滚筒仍可以割到顶煤；本实用新型结构紧凑、合理，在不更换液压支架的前提下，即使工作面煤层厚度变化，只要更换不同直径的采煤机滚筒， 就可以顺利的完成工作面煤矿的工采。
附图说明
图1是本实用新型顶梁前部的断面图。
图2是本实用新型的仰视图。
图3是伸缩梁的断面图。
其中，1是顶梁；2是伸缩梁；3是凹槽Ⅰ；4是伸缩梁千斤顶；5是护帮板；6是护帮板千斤顶。
具体实施方式
如图1-3所示，一种用于大起伏工作面高端液压支架的伸缩梁，包括整体结构的顶梁1、伸缩梁2、伸缩梁千斤顶4和护帮板5，顶梁1前端开有用于放置伸缩梁2的凹槽腔体（图中未标出），所述伸缩梁2上靠近伸缩梁千斤顶4的一端开有凹槽Ⅰ3，所述顶梁1下方紧贴凹槽腔体开有用于放置伸缩梁千斤顶4的凹槽Ⅱ（图中未标出），凹槽腔体和凹槽Ⅱ组成整体凹陷结构，凹槽Ⅰ3使得伸缩梁千斤顶4和伸缩梁2整体位于顶梁1内的凹陷结构中。伸缩梁2放置在顶梁1前端的凹槽腔体中，伸缩梁千斤顶4贴近顶梁1放置于凹槽Ⅱ，伸缩梁2与伸缩梁千斤顶4铰接，伸缩梁千斤顶4固装在顶梁1上，伸缩梁2前端安装有护帮板5，护帮板5的尾端铰接护帮板千斤顶6，护帮板千斤顶6常规安装在托板（图中未标出）上，托板是通过销轴固定在伸缩梁2中部的。
优选地，所述凹槽Ⅰ3和凹槽Ⅱ均为弧形凹槽。
为了使得伸缩梁2、伸缩梁千斤顶4与顶梁1的安装结构更紧凑，所述顶梁1在护帮板完全收回时前端的厚度为396mm。
本实用新型工作时，凹槽Ⅱ中的伸缩梁千斤顶4正常控制伸缩梁2工作，护帮板千斤顶6正常控制护帮板5工作，在高端液压支架配套大直径的滚筒时可正常作业，在高端液压支架换用小直径的滚筒时，护帮板5收回后，由于顶梁1前端厚度仅为396mm，行星轮接触到顶梁1前端的护帮板5后小直径滚筒仍能完全割顶煤，仍能正常作业。
以上所述的仅是本实用新型的优选实施方式，应当指出，对于本领域的技术人员来说，在不脱离本实用新型整体构思前提下，还可以作出若干改变和改进，这些也应该视为本实用新型的保护范围，这些都不会影响本实用新型实施的效果和专利的实用性。

Claims (3)

1.一种用于大起伏工作面高端液压支架的伸缩梁，包括整体结构的顶梁（1）、伸缩梁（2）、伸缩梁千斤顶（4）和护帮板（5），顶梁（1）前端开有用于放置伸缩梁（2）的凹槽腔体，其特征在于：所述伸缩梁（2）上靠近伸缩梁千斤顶（4）的一端开有凹槽Ⅰ（3），所述顶梁（1）下方紧贴凹槽腔体开有用于放置伸缩梁千斤顶（4）的凹槽Ⅱ，凹槽腔体和凹槽Ⅱ组成整体凹陷结构，凹槽Ⅰ（3）使得伸缩梁千斤顶（4）和伸缩梁（2）整体位于顶梁（1）内的凹陷结构中。
2.根据权利要求1所述的用于大起伏工作面高端液压支架的伸缩梁，其特征在于：所述凹槽Ⅰ（3）和凹槽Ⅱ均为弧形凹槽。
3.根据权利要求1所述的用于大起伏工作面高端液压支架的伸缩梁，其特征在于：所述顶梁（1）在护帮板（5）完全收回时前端的厚度为396mm。
CN201820996731.XU 2018-06-27 2018-06-27 一种用于大起伏工作面高端液压支架的伸缩梁 Active CN208456651U (zh)

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