CN117823197A - Three-column tunnel advance hydraulic support - Google Patents

Abstract

The present invention discloses a three-column tunnel advance hydraulic support, which belongs to the field of mine support technology, including a base, the base is installed at the corner of the ventilation tunnel in the coal mine, the base is rotatably connected with flaps on both sides, a telescopic member is connected between the end of the flap away from the base and the base, the upper end of the base is provided with three column sockets, the three column sockets are not in the same straight line, a telescopic column is rotatably connected in the column socket, the upper end of the telescopic column is hinged with a top beam through an optical pin, the extension directions of the three optical pins are parallel to each other, and the tilting angle of the top beam is between 0° and 35°. The advantages of the present invention over the prior art are: improving the support safety at the corner of the tunnel and improving the installation efficiency of the support bracket.

Description

Three-column tunnel advance hydraulic support

Technical Field

The invention relates to the technical field of mine support, in particular to a three-column tunnel advance hydraulic support.

Background technique

Hydraulic support is a supporting equipment for the fully-mechanized mining face in coal mines. Its main function is to support the roof of the mining area, maintain a safe working space, and push the mining and transportation equipment on the working face.

The column of the hydraulic support is one of the important components of the hydraulic support that mainly bears the top plate pressure. It is the main component that connects the support top beam and the base. It is used for the hydraulic support to bear the top plate load and adjust the support height.

There are corner tunnels in the ventilation tunnels of coal mines. Currently, most hydraulic supports in the industry are four-column or double-column supports. These two types of supports are not suitable for supporting the corners of the tunnel due to their own structures.

Currently, the support methods are limited to straight tunnels, and there are no special support equipment for corner tunnels. They are generally supported by stacked sleepers. The sleepers have low strength, are easily damaged, are not fireproof, are easily corroded and worm-eaten, have large wind resistance, and are inconvenient to install.

Summary of the invention

The present invention aims to solve the technical problems mentioned in the above background technology and provides a three-column tunnel advance hydraulic support specially designed for corner tunnels. The support body is in a triangular state and can be embedded in the corner during installation, thereby solving the support problem in the corner tunnel.

The technical solution provided by the present invention is: a three-column tunnel advance hydraulic support, comprising a base, the base is installed at the corner of the ventilation tunnel in an underground coal mine, flaps are rotatably connected on both sides of the base, a telescopic part is connected between the end of the flap away from the base and the base, three column sockets are provided at the upper end of the base, the three column sockets are not in the same straight line, a telescopic column is rotatably connected in the column socket, the upper end of the telescopic column is hinged with a top beam through an optical pin, the extension directions of the three optical pins are parallel to each other, and the tilting angle of the top beam is between 0°-35°.

In some embodiments, a column hoop is further included, which is fixedly connected to the middle of the three telescopic columns, and the telescopic columns are connected to the base through bolts to prevent the columns from tipping over during the disassembly or installation of the bracket.

In some embodiments, a plurality of spikes are fixedly connected to the upper end of the top beam so that the spikes can penetrate into the top plate to improve stability.

In some embodiments, flaps are hingedly connected to both sides of the base via pins, and the extension direction of the pins of the flaps is parallel to the optical pins.

In some embodiments, a jack is connected between the end of the flap away from the base and the base. During transportation, the jack retracts the flap to reduce the occupied space. When in use, it is opened to increase the contact area between the base and the bottom plate of the work surface, prevent the bracket from piercing the bottom, prevent the bracket from tipping over, and increase the stability of the bracket.

In some embodiments, the three telescopic columns are provided with separate control valve ports so that the angle of the support top beam can be freely adjusted during the movement process.

Compared with the prior art, the advantages of the present invention are as follows: 1. The structural layout design of the three-column hydraulic support is suitable for application at the corners of ventilation tunnels in coal mines. The main structure is triangular, which can adapt to the space of the corner tunnel and effectively provide support. The three-column support is an unconventional support structure. The present invention solves the structural design problem of the three-column support through scientific layout and innovative structural form, so that the support state is stable and the support is powerful;

2. The top beam of the support of the present invention can adapt to the top plate inclination angle of 0-35° (the general hydraulic support angle is adjusted to 0-5°);

3. The present invention has double-sided base flaps, which can effectively increase the contact area of the bracket bottom plate and facilitate the bracket installation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic front view of a hydraulic support according to an embodiment of the present invention;

FIG2 is a schematic side view of a hydraulic support according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the hydraulic support shown in FIG. 2 lowering the flap and lifting the top beam.

In the attached figure: 1. base; 2. flap; 3. telescopic part; 4. column socket; 5. telescopic column; 6. light pin; 7. top beam; 8. column hoop; 9. spike; 10. pin shaft; 11. operating valve port; 100. hydraulic support.

Detailed ways

The present invention is further described in detail below in conjunction with the accompanying drawings.

FIG. 1 , FIG. 2 , and FIG. 3 provide an embodiment of the present invention. As shown in FIG. 1 , a base 1 is installed at a corner of a ventilation tunnel in an underground coal mine.

The flap 2 is a plate-like structure rotatably connected to the base 1 on both sides by a pin shaft 10. The flap 2 is lowered to assist the base 1 in supporting the entire hydraulic support 100. One end of the flap 2 is connected to the base 1 through a jack to adjust the angle of the flap 2. The flap 2 can be retracted during transportation to reduce the occupied space. When in use, the flap 2 is opened to support the bottom plate of the working surface, so as to increase the contact area between the base 1 and the bottom plate of the working surface, prevent the support from sinking and increase the stability of the support.

A telescopic column 5 is provided with three column sockets 4 on the base 1, and a telescopic column 5 is installed in each of the three column sockets 4. The three telescopic columns 5 are arranged in an equilateral triangle. The middle part of the telescopic column 5 is fixedly connected to a column hoop 8. The column hoop 8 connects the telescopic column 5 to the base 1 through bolts to prevent the column from tipping over during disassembly or installation. The upper end of the telescopic column 5 is hinged with a top beam 7 through an optical pin 6. The axes of the three optical pins 6 are parallel to each other. Lifting one side of the telescopic column 5 can cause the top beam 7 at the upper end to tilt.

As shown in Figures 2 and 3, the top beam 7 is connected to the upper end of the telescopic column 5, and its tilting angle is between 0° and 35°. A plurality of spikes 9 are fixedly connected to the upper end of the top beam 7, which can be inserted into the top plate to improve the stability of the bracket.

The extension direction of the pin shaft 10 of the flap 2 is parallel to the optical pin 6, and the flap 2 is located on the vertical plane where the top beam 7 rotates (i.e., the plane shown in Figure 3), which facilitates the flap 2 to provide stable support on the inclined force line of the top beam 7 and enhances the stability of the hydraulic support 100.

The three telescopic columns 5 are provided with separate control valve ports 11 connected to an oil pump so as to freely adjust the angle of the support top beam 7 .

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims (6)

1. A three-column tunnel advance hydraulic support (100), comprising a base (1), characterized in that: the base (1) is installed at the corner of a ventilation tunnel in a coal mine, and flaps (2) are rotatably connected to both sides of the base (1), and a telescopic member (3) is connected between the end of the flap (2) away from the base (1) and the base (1), and three column sockets (4) are provided at the upper end of the base (1), and the three column sockets (4) are not on the same straight line, and a telescopic column (5) is rotatably connected in the column socket (4), and the upper end of the telescopic column (5) is hinged to a top beam (7) through an optical pin (6), and the extension directions of the three optical pins (6) are parallel to each other, and the tilting angle of the top beam (7) is between 0° and 35°. 2. The three-column tunnel advance hydraulic support (100) according to claim 1 is characterized in that it also includes a column hoop (8), which is fixedly connected to the middle of the three telescopic columns (5), and the telescopic columns (5) are connected to the base (1) by bolts to prevent the telescopic columns (5) from tipping over during the disassembly or installation of the support. 3. The three-column tunnel advance hydraulic support (100) according to claim 1 is characterized in that: a plurality of spikes (9) are fixedly connected to the upper end of the top beam (7) so that the spikes can penetrate into the top plate to improve stability. 4. The three-column tunnel advance hydraulic support (100) according to claim 1 is characterized in that: flaps (2) are hinged on both sides of the base (1) through pins (10), and the extension direction of the pins (10) of the flaps (2) is parallel to the optical pins (6). 5. The three-column tunnel advance hydraulic support (100) according to claim 1 is characterized in that a jack is connected between the end of the flap (2) away from the base (1) and the base (1). During transportation, the jack retracts the flap (2) to reduce the occupied space, and when in use, it is opened to increase the contact area between the base (1) and the bottom plate of the working surface, prevent the support from piercing the bottom, and prevent the support from tipping over, thereby increasing the stability of the support. 6. The three-column tunnel advance hydraulic support (100) according to claim 1 is characterized in that: the three telescopic columns (5) are provided with independent control valve ports (11) so that the angle of the support top beam (7) can be freely adjusted during the movement process.