阅读说明：本技术 可旋转导杆并具有自动复位功能的支架 (Support with rotatable guide rod and automatic reset function ) 是由 郑波 王朋 李占春 刘建功 于 2021-05-31 设计创作，主要内容包括：本发明涉及液压支架技术领域,尤其涉及一种可旋转导杆并具有自动复位功能的支架,包括顶梁、底座、立柱、复位千斤顶、导杆和导套,所述导套的底部通过铰轴与所述底座铰接,所述导杆与所述导套滑动配合,导杆的顶部与所述顶梁铰接,所述立柱的底部与所述底座连接,顶部与所述顶梁连接,所述复位千斤顶的下部与所述底座铰接,上部与所述导套的侧部铰接。本装置将底座与导套铰接,通过复位千斤顶控制旋转角度,避免了导套损坏情况,同时增加复位装置,减少了支架操作人员的劳动强度及难度。(The invention relates to the technical field of hydraulic supports, in particular to a support with a rotatable guide rod and an automatic reset function, which comprises a top beam, a base, an upright post, a reset jack, a guide rod and a guide sleeve, wherein the bottom of the guide sleeve is hinged with the base through a hinge shaft, the guide rod is in sliding fit with the guide sleeve, the top of the guide rod is hinged with the top beam, the bottom of the upright post is connected with the base, the top of the upright post is connected with the top beam, the lower part of the reset jack is hinged with the base, and the upper part of the reset jack is hinged with the side part of the guide sleeve. The device has the advantages that the base is hinged with the guide sleeve, the rotation angle is controlled through the reset jack, the damage condition of the guide sleeve is avoided, the reset device is additionally arranged, and the labor intensity and the difficulty of a support operator are reduced.)

1. The utility model provides a rotatable guide arm and have automatic re-setting function's support which characterized in that: the guide sleeve is hinged to the base through a hinge shaft, the guide rod is in sliding fit with the guide sleeve, the top of the guide rod is hinged to the top beam, the bottom of the stand is connected with the base, the top of the stand is connected with the top beam, the lower portion of the reset jack is hinged to the base, and the upper portion of the reset jack is hinged to the side portion of the guide sleeve.

2. The rotatable guide bar bracket with automatic reset function as claimed in claim 1, wherein: and a resetting device is arranged between the guide sleeve and the base.

3. The rotatable guide bar bracket with automatic reset function as claimed in claim 2, wherein: the reset device consists of a reset valve and a shifting fork fixed on the guide sleeve, the reset valve is fixed on the base, and the shifting fork is in contact fit with the upper part of the reset valve.

4. The rotatable guide bar bracket with automatic reset function as claimed in claim 1, wherein: the reset jack is positioned between the upright post and the guide sleeve.

Technical Field

The invention relates to the technical field of hydraulic supports, in particular to a support capable of rotating a guide rod and having an automatic resetting function.

Background

The hydraulic support is an important component of the comprehensive coal mining equipment, and can reliably and effectively support and control a top plate of a working face, isolate a goaf, prevent gangue from entering a stope face, and prevent equipment such as a conveyor from entering and exiting a mine hole. The guide sleeve on the traditional straight guide rod hydraulic support is welded on the base, the stability of the support is maintained through the guide rod and the guide sleeve, and the condition that the guide sleeve is damaged sometimes occurs when the condition of the top plate of the support is poor.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a bracket which can rotate a guide rod and has an automatic reset function.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a rotatable guide arm and have automatic re-setting function's support which characterized in that: the guide sleeve is hinged to the base through a hinge shaft, the guide rod is in sliding fit with the guide sleeve, the top of the guide rod is hinged to the top beam, the bottom of the stand is connected with the base, the top of the stand is connected with the top beam, the lower portion of the reset jack is hinged to the base, and the upper portion of the reset jack is hinged to the side portion of the guide sleeve.

Preferably, a resetting device is arranged between the guide sleeve and the base.

The reset device consists of a reset valve and a shifting fork fixed on the guide sleeve, the reset valve is fixed on the base, and the shifting fork is in contact fit with the upper part of the reset valve.

Preferably, the reset jack is located between the upright post and the guide sleeve.

The invention has the advantages that the base is hinged with the guide sleeve, the rotation angle is controlled by the reset jack, the guide sleeve is prevented from being damaged, and meanwhile, the reset device is added, so that the labor intensity and difficulty of support operators are reduced.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a hydraulic schematic of the present invention.

Detailed Description

The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings. Referring to fig. 1 and 2, a support with a rotatable guide rod and an automatic reset function comprises a top beam 1, a base 2, a stand column 3, a reset jack 4, a guide rod 5 and a guide sleeve 6, wherein the bottom of the guide sleeve is hinged to the base through a hinge shaft 7, the guide rod is in sliding fit with the guide sleeve, the top of the guide rod is hinged to the top beam, the bottom of the stand column is connected to the base, the top of the stand column is connected to the top beam, the lower part of the reset jack is hinged to the base, and the upper part of the reset jack is hinged to the side part of the guide sleeve. And a resetting device 8 is arranged between the guide sleeve and the base. The resetting device 8 is composed of a resetting valve 10, a shifting fork 9 fixed on the guide sleeve 6 and a hydraulic system, when the rear upright post is lifted, the resetting valve 10 is communicated with liquid, and the resetting jack 4 in the hydraulic system is controlled to act through the rotation angle of the shifting fork 9 fixed on the guide sleeve 6 relative to the resetting valve 10 (three-position four-way valve) fixed on the base 2, so that the guide sleeve 6 always forms a certain angle relative to the base 2.

The hydraulic support is characterized in that a guide sleeve device is hinged to a hydraulic support base, the guide sleeve is matched with a guide rod, the guide rod is hinged to a top beam, a reset jack is installed between the guide sleeve and the base, the stability of a support guide rod mechanism is ensured through a bidirectional lock and a safety valve which are arranged on the reset jack, so that the posture of the support is ensured, when a working face top plate sinks, the support top beam receives front and rear horizontal component forces, after the safety valve of the reset jack discharges liquid, the guide rod guide sleeve device rotates relative to the base, the safety valve resets or the rotating angle reaches a limit position, the posture of the support is stable, after the support is moved in place, the reset jack is adjusted in a linkage mode when a rear upright post is lifted, the guide rod guide sleeve device rotates relative to the base to reset within a specified angle range, and the reset jack can be independently operated to reset the support.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.