阅读说明：本技术 一种急倾斜巷道用上端头液压支架及使用方法 (Upper end hydraulic support for steeply inclined roadway and use method ) 是由 刘佳军 郭夕祥 于 2020-07-10 设计创作，主要内容包括：本发明公开了一种急倾斜巷道用上端头液压支架及使用方法,它包括第一支架与第二支架,第一支架数量为两个且相互并排紧靠放置,第二支架数量为一个且与其中一个第一支架前后紧靠设置,第一支架与第二支架均位于巷道内,且第二支架靠近急倾斜口。本发明位于急倾斜巷道口,用来支撑急倾斜巷道口顶面,防止该处顶面坍塌或落石,保证人员出入安全。(The invention discloses an upper end hydraulic support for a steep roadway and a using method thereof. The invention is positioned at the steeply inclined road junction and is used for supporting the top surface of the steeply inclined road junction, preventing the top surface from collapsing or falling rocks, and ensuring the safety of people entering and exiting.)

1. An upper end hydraulic support for a steep inclined roadway is characterized by comprising two first supports and two second supports, wherein the two first supports are arranged side by side and are closely arranged, the one second support is arranged closely to one first support in front and back, the first supports and the second supports are both positioned in the roadway, and the second supports are close to a steep inclined port;

the first support comprises a first base, a first support beam, a first oil cylinder and a first connecting rod mechanism, the first support beam is fixed above the first base through the first oil cylinder, one end of the first oil cylinder is hinged to the first base, the other end of the first oil cylinder is hinged to the first support beam, the first support beam stretches through the first oil cylinder to realize lifting action, the first connecting rod mechanism is positioned between the first base and the first support beam, the first connecting rod mechanism comprises a first frame and a first connecting rod, the first frame is fixed on the first base, the first connecting rod is fixed on the first support beam, the first support beam realizes lifting and angle adjustment action through the first connecting rod mechanism and the first oil cylinder, one end of the first support beam is hinged to a first telescopic beam, the first telescopic beam comprises a first bottom beam and a first front canopy, the first bottom beam is hinged and fixed on the first support beam, the first front canopy is telescopically sleeved in the first bottom beam, an auxiliary oil cylinder is fixed between the first base and the first telescopic beam and is obliquely arranged outwards;

the second support comprises a second base, a second supporting beam, a second oil cylinder and a second connecting rod mechanism, the second supporting beam is fixed above the second base through the second oil cylinder, one end of the second oil cylinder is hinged to the second base, the other end of the second oil cylinder is hinged to the second supporting beam, the second supporting beam stretches through the second oil cylinder to achieve lifting action, one end of the second supporting beam is hinged to a shield beam, the second connecting rod mechanism is located between the second base and the shield beam, the second connecting rod mechanism comprises a second rack and a second connecting rod, the second rack is fixed on the second base, and the second connecting rod is fixed on the shield beam.

2. The upper end hydraulic support for the steeply inclined roadway according to claim 1, characterized in that: the second supporting beam is close to one side of the steeply inclined opening and is provided with an extension beam, the extension beam is fixed through a third connecting rod mechanism and is flush with the second supporting beam, and the extension beam can be bent and folded downwards through the third connecting rod mechanism.

3. The upper end hydraulic support for the steeply inclined roadway according to claim 1, characterized in that: the base comprises a first bottom plate, a second bottom plate and a connecting piece, the first bottom plate and the second bottom plate are located on the same horizontal plane and are arranged in parallel, and the first bottom plate and the second bottom plate are fixedly connected through the connecting piece.

4. The upper end hydraulic support for the steeply inclined roadway according to claim 1, characterized in that: the quantity of the first oil cylinder and the second oil cylinder is four, the first oil cylinder and the second oil cylinder are respectively fixed at four corners of the first base and the second base, and the bottoms of the first oil cylinder and the second oil cylinder are sleeved with stand columns.

5. The upper end hydraulic support for the steeply inclined roadway according to claim 1, characterized in that: the number of the auxiliary oil cylinders is two and is positioned at one end of the base.

6. The upper end hydraulic support for the steeply inclined roadway according to claim 1, characterized in that: and the end corners of all the bases, the supporting beams, the bottom beams and the front cantilever are all processed by round corners.

7. The use method of the hydraulic support for the upper end head of the steeply inclined roadway based on any one of claims 1 to 6 is characterized in that: it comprises the following steps:

firstly, after supports to be supported are sequentially stacked and placed in a steep inclined roadway, a second support is placed in the roadway close to a steep inclined port, the head of the second support tightly abuts against the inner end of the roadway, one side of the second support tightly abuts against the inner wall of the roadway, the other side of the second support tightly abuts against the support, and at the moment, a shield beam of the second support is driven by a second oil cylinder to be in a descending and folding state;

secondly, placing a first support next to a second support, enabling the head of the first support to tightly abut against the tail of the second support, driving a shield beam of the second support to move upwards through a second oil cylinder, enabling the shield beam to tightly abut against the inner end of the roadway, forming a force of the shield beam acting on the inner end of the roadway in the process of moving upwards, enabling the inner end of the roadway to generate a reaction force to the second support oppositely, enabling the second support to integrally displace towards the direction of the first support, and enabling the second support and the first support to form a mutual abutting state, thereby achieving fine adjustment of the distance between the second support and the first support;

thirdly, placing the other first support in the roadway, so that the two first supports are placed in the roadway in parallel along the length direction of the roadway;

and fourthly, lifting all the supporting beams and the front canopy through the oil cylinders and tightly supporting the top surface of the roadway.

Technical Field

The invention relates to the technical field of coal mining, in particular to an upper end hydraulic support for a steep roadway and a using method thereof.

Background

And when the coal seam with the roadway inclination angle of more than or equal to 45 degrees is a steep inclined coal seam. Because the dip angle of the coal seam of the steep inclined coal seam is too large, the traditional hydraulic support structure determines that the hydraulic support of the working face of the steep inclined coal seam is always in a static lateral unstable and dynamic longitudinal unbalanced state under a normal working state, once the hydraulic support loses effective support of the hydraulic support below due to misoperation of workers and falls down, the hydraulic support is immediately inclined, the hydraulic support bites the hydraulic support below when the hydraulic support is light, the hydraulic support falls down when the hydraulic support is heavy, and roof caving accidents are directly caused, generally the steep inclined coal seam is generally in a roadway, namely the steep inclined coal seam appears in a straight roadway, so that a coal mining roadway is required to be excavated along the coal seam, the coal mining roadway is a steep inclined roadway, the hydraulic support in the steep inclined roadway is used for supporting the top of the coal mining roadway to prevent the top from collapsing, and the mouth of the steep inclined roadway also needs the hydraulic support for supporting, because the position of the steeply inclined roadway opening is crucial, once the roof fall or collapse accident occurs at the position, the whole coal mining roadway can be successful for one step short, and therefore, a hydraulic support which can firmly support the steeply inclined coal seam opening and can be firmly matched with a hydraulic support in the steeply inclined coal seam roadway is urgently needed.

Disclosure of Invention

The invention provides a hydraulic support for a steeply inclined roadway, which is positioned at the top of the steeply inclined roadway opening and is used for supporting the top surface of the steeply inclined roadway opening, preventing the top surface from collapsing or falling rocks, and ensuring the safety of people entering and exiting.

The invention provides an upper end hydraulic support for a steep roadway, which comprises two first supports and two second supports, wherein the two first supports are arranged side by side and are closely arranged, the two second supports are arranged closely to one of the first supports in front and back, the first supports and the second supports are both positioned in the roadway, and the second supports are close to a steep mouth;

the first support comprises a first base, a first support beam, a first oil cylinder and a first four-bar linkage, the first support beam is fixed above the first base through the first oil cylinder, one end of the first oil cylinder is hinged with the first base, the other end of the first oil cylinder is hinged with the first support beam, the first support beam stretches through the first oil cylinder to realize lifting action, the first linkage is positioned between the first base and the first support beam, the first linkage comprises a first frame and a first connecting rod, the first frame is fixed on the first base, the first connecting rod is fixed on the first support beam, the first support beam realizes lifting and angle adjustment action through the first linkage and the first oil cylinder, one end of the first support beam is hinged with a first telescopic beam, the first telescopic beam comprises a first bottom beam and a first front canopy, the first bottom beam is hinged and fixed on the first support beam, the first front canopy is telescopically sleeved in the first bottom beam, an auxiliary oil cylinder is fixed between the first base and the first telescopic beam and is obliquely arranged outwards;

the second support comprises a second base, a second supporting beam, a second oil cylinder and a second connecting rod mechanism, the second supporting beam is fixed above the second base through the second oil cylinder, one end of the second oil cylinder is hinged to the second base, the other end of the second oil cylinder is hinged to the second supporting beam, the second supporting beam stretches through the second oil cylinder to achieve lifting action, one end of the second supporting beam is hinged to a shield beam, the second connecting rod mechanism is located between the second base and the shield beam, the second connecting rod mechanism comprises a second rack and a second connecting rod, the second rack is fixed on the second base, and the second connecting rod is fixed on the shield beam.

Preferably, the second supporting beam is provided with an extension beam on one side close to the steep mouth, the extension beam is fixed through the third link mechanism and is flush with the second supporting beam, and the extension beam can be bent and folded downwards through the third link mechanism.

Preferably, the base includes first base, second base and connecting piece, and first base and second base are located same horizontal plane and parallel to each other and set up, and first base passes through the connecting piece with the second base and is connected fixedly.

Preferably, the number of the first oil cylinder and the second oil cylinder is four, the first oil cylinder and the second oil cylinder are respectively fixed at four corners of the first base and the second base, and the bottoms of the first oil cylinder and the second oil cylinder are sleeved with the upright posts.

Preferably, the number of the auxiliary oil cylinders is two and is positioned at one end of the base.

Preferably, the end corners of all the base, the support beam, the bottom beam and the front cantilever are rounded.

Based on the hydraulic support structure, the invention also provides a using method of the upper end head hydraulic support, which comprises the following steps:

firstly, after supports to be supported are sequentially stacked and placed in a steep inclined roadway, a second support is placed in the roadway close to a steep inclined port, the head of the second support tightly abuts against the inner end of the roadway, one side of the second support tightly abuts against the inner wall of the roadway, the other side of the second support tightly abuts against the support, and at the moment, a shield beam of the second support is driven by a second oil cylinder to be in a descending and folding state;

secondly, placing a first support next to a second support, enabling the head of the first support to tightly abut against the tail of the second support, driving a shield beam of the second support to move upwards through a second oil cylinder, enabling the shield beam to tightly abut against the inner end of the roadway, forming a force of the shield beam acting on the inner end of the roadway in the process of moving upwards, enabling the inner end of the roadway to generate a reaction force to the second support oppositely, enabling the second support to integrally displace towards the direction of the first support, and enabling the second support and the first support to form a mutual abutting state, thereby achieving fine adjustment of the distance between the second support and the first support;

thirdly, placing the other first support in the roadway, so that the two first supports are placed in the roadway in parallel along the length direction of the roadway;

and fourthly, lifting all the supporting beams and the front canopy through the oil cylinders and tightly supporting the top surface of the roadway.

The invention not only provides a safe operation area, but also provides a safe passage for workers by arranging three supports in a roadway at the position of a steeply inclined roadway opening in a combined manner, wherein the support beam is driven by an oil cylinder to lift, so that the support beam is tightly abutted against the top surface of the roadway, and the support provided by the invention is tightly abutted against the support frame positioned in the steeply inclined roadway, a base of the support provided by the invention is directly contacted with the ground in the roadway, so that the support is prevented from tilting or sliding, in addition, the end part of the support beam is provided with a telescopic beam or a shield beam, so that the contact area between the support frame and the top surface of the roadway is ensured, and the distance between the two supports can be finely adjusted by the telescopic beam, wherein the side edge of the support close to the steeply inclined roadway opening is hinged with an extension beam which is just positioned below the coal seam of the steeply inclined roadway opening, so, The installation and the placement are convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the structure of the present invention.

Fig. 3 is a schematic structural view of the base.

Wherein 1, a first bracket; 11. a first base; 12. a first support beam; 13. a first cylinder; 14. a first link mechanism; 141. a first frame; 142. a first link; 15. a first telescoping beam; 151. a first bottom beam; 152. a first front cantilever; 16. an auxiliary oil cylinder; 2. a second bracket; 21. a second base; 22. a second support beam; 23. a second cylinder; 24. a second link mechanism; 241. a second frame; 242. a second link; 25. covering the beam; 26. an extension beam; 3. a first base plate; 4. a second base plate; 5. a connecting member; 6. and (5) a hydraulic support.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.