Roadway advanced hydraulic support with top beam capable of stretching and sliding

Abstract

The utility model belongs to the technical field of sliding type roadway advanced hydraulic supports, and particularly relates to a sliding type roadway advanced hydraulic support with a telescopic top beam. Each group of sliding type roadway advanced hydraulic supports comprises an upper row of longitudinal beams and a lower row of cross beams, the row of longitudinal beams are divided into two groups according to odd-numbered positions and even-numbered positions, the row of cross beams are divided into two groups according to odd-numbered positions and even-numbered positions, the longitudinal beams at the odd-numbered positions are hinged to the cross beams at the odd-numbered positions, and the longitudinal beams at the even-numbered positions are hinged to the cross beams at the even-numbered positions; a column shoe is arranged at the bottom of the hydraulic stand column; the frame moving jack is hinged between the adjacent odd-numbered cross beams and even-numbered cross beams, and the odd-numbered cross beams and the even-numbered cross beams are parallel to each other; the roadway advanced hydraulic support with the telescopic sliding type top beam can be used for a fully mechanized coal mining face tail roadway and can also be used for a machine head roadway, and has the advantages of being large in supporting force and supporting area, simple in structure, easy and convenient to operate, small in influence on pedestrian passageways and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of sliding roadway advanced hydraulic support, specifically relating to a top beam telescopic sliding roadway advanced hydraulic support. Background Technology

[0002] The "Coal Mine Safety Regulations" stipulate that "all outlets of the coal mining face must be reinforced with support within the range of the pressure influence of the roadway connection, and the length of the supported roadway shall not be less than 20m." Generally, single hydraulic props are used for the advance support of roadways in fully mechanized coal mining faces. More advanced advance support methods employ various types of hydraulic supports, currently including stepping self-moving roadway advance hydraulic supports, sliding roadway advance hydraulic supports, unit hydraulic supports, and portal hydraulic supports.

[0003] Sliding advance hydraulic supports are used in roadways of fully mechanized mining faces, refer to the attached document. Figure 4 In actual production, when the coal mining machine is cutting the coal seam at the head and tail of the working face, in order to prevent the coal mining machine drum from interfering with the top beam of the advanced hydraulic support, the support staff will usually move the advanced hydraulic support forward in advance to leave a sufficient safety distance, which causes the advanced hydraulic support to move frequently; therefore, this patent is to solve the above problems. Utility Model Content

[0004] This invention addresses the problem of frequent shifting of the advanced hydraulic support during coal seam cutting at the head and tail of the coal face by a coal mining machine, which affects mining efficiency and increases the labor intensity of support workers.

[0005] This utility model provides the following technical solution: a telescopic sliding hydraulic support for roadways, each set of sliding hydraulic supports for roadways includes an upper row of longitudinal beams and a lower row of transverse beams. The longitudinal beams are divided into two groups according to odd and even positions, and the transverse beams are also divided into two groups according to odd and even positions. The odd-numbered longitudinal beams are hinged to the odd-numbered transverse beams, and the even-numbered longitudinal beams are hinged to the even-numbered transverse beams. A hydraulic column is hinged to the bottom of the transverse beam, and a column shoe is provided at the bottom of the hydraulic column. It also includes a shifting jack, which is hinged between adjacent odd-numbered and even-numbered transverse beams.

[0006] Furthermore, the longitudinal beam includes a fixed beam and a telescopic beam. The telescopic beam includes a telescopic outer beam and a telescopic inner beam. The telescopic inner beam is movably inserted into the telescopic outer beam. An inner pushing cylinder connects the telescopic inner beam and the telescopic outer beam. The beam ends of the telescopic outer beam and the fixed beam are hinged.

[0007] Furthermore, side-pushing jacks are installed at both ends of the crossbeam.

[0008] Furthermore, the hinge axis between the longitudinal beam and the transverse beam is parallel to the longitudinal beam; the hinge axis between the transverse beam and the hydraulic column is parallel to the transverse beam; the hinge axis between the telescopic outer beam and the fixed beam is parallel to the transverse beam; and the hinge axis between the moving jack and the transverse beam is parallel to the transverse beam.

[0009] Furthermore, the frame-shifting jack is connected between the odd-numbered and even-numbered crossbeams in the middle of the row; the hinge axis of the telescopic outer beam and the fixed beam is located between the odd-numbered and even-numbered crossbeams in the middle of the row.

[0010] Furthermore, the lateral pusher is parallel to the crossbeam.

[0011] Furthermore, the cross-sections of the telescopic outer beam, the telescopic inner beam, and the fixed beam are square.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This utility model provides a telescopic sliding hydraulic support for roadways, which can be used in the tail section of a fully mechanized mining face as well as in the head section. It offers advantages such as high support force, large support area, simple structure, easy operation, and minimal impact on pedestrian access. Each set of sliding hydraulic supports employs a staggered structure of No. 1 and No. 2 support frames, which push and pull against each other to achieve self-movement, thus helping to maintain the integrity of the roadway roof. The longitudinal beam of the sliding hydraulic support is hinged to a crossbeam, and the lower part of the crossbeam is hinged to a column for grounding. The column is equipped with a heightening and enlarging column shoe to reduce the pressure on the floor and better adapt to soft-floor conditions in roadways. The longitudinal beam of the hydraulic support is designed as a telescopic beam, meaning its length is variable, significantly reducing the number of times the hydraulic support needs to be moved during production shifts and improving production efficiency. Attached Figure Description

[0014] Figure 1 A top view of the telescopic sliding hydraulic support for the roadway with a top beam;

[0015] Figure 2 This is a front view of the telescopic sliding hydraulic support for the roadway with a top beam.

[0016] Figure 3 This is a schematic diagram of the No. 1 support frame;

[0017] Figure 4 This is a schematic diagram of the second support frame;

[0018] Figure 5 This is a schematic diagram showing the arrangement of the telescopic sliding hydraulic support for the top beam in the roadway.

[0019] In the diagram: 1-Longitudinal beam; 1.1-Fixed beam; 1.2-Telescopic beam; 1.2.1-Telescopic outer beam; 1.2.2-Telescopic inner beam; 1.3-Inner push cylinder; 2-Crossbeam; 3-Hydraulic column; 4-Column shoe; 5-Shift jack; 6-Side push jack; 7-Hinged joint between longitudinal and crossbeams. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] like Figures 1-4 As shown: A telescopic sliding hydraulic support for roadways, each set of sliding hydraulic supports for roadways includes an upper row of longitudinal beams 1 and a lower row of transverse beams 2. The longitudinal beams 1 are divided into two groups according to odd and even positions, and the transverse beams 2 are also divided into two groups according to odd and even positions. The longitudinal beams 1 in the odd positions are hinged to the transverse beams 2 in the odd positions, and the longitudinal beams 1 in the even positions are hinged to the transverse beams 2 in the even positions. A hydraulic column 3 is hinged to the bottom of the transverse beam 2, and a column shoe 4 is provided at the bottom of the hydraulic column 3. It also includes a shifting jack 5, which is hinged between adjacent transverse beams 2 in the odd and even positions.

[0022] Taking 6 longitudinal beams 1 and 4 transverse beams 2 as an example, the longitudinal beams are numbered as longitudinal beam M1, longitudinal beam M2, longitudinal beam M3, longitudinal beam M4, longitudinal beam M5, and longitudinal beam M6; the transverse beams are numbered as transverse beam H1, transverse beam H2, transverse beam H3, and transverse beam H4.

[0023] Among them, longitudinal beams M1, M3, and M5 are hinged to crossbeams H3 and H1, but not connected to crossbeams H4 and H2;

[0024] Longitudinal beams M2, M4, and M6 are hinged to crossbeams H4 and H2, but not to crossbeams H3 and H1. Each of the two ends of crossbeams H1, H2, H3, and H4 has a hydraulic column 3 at its bottom. Each of the two ends of crossbeams H1, H2, H3, and H4 has a side-push jack 6, which is parallel to the crossbeam 2.

[0025] The longitudinal beams M1, M3, M5, H3, H1, and the hydraulic columns 3 and side-pushing jacks 6 on H3 and H1 constitute the first support frame; the longitudinal beams M2, M4, M6, H4, H2, and the hydraulic columns 3 and side-pushing jacks 6 on H4 and H2 constitute the second support frame.

[0026] The movement method of the sliding roadway advance hydraulic support is as follows: the No. 1 support frame is fixed, the hydraulic column 3 on the No. 2 support frame is raised, the side push jack 6 is retracted, and at the same time the hydraulic column 3 is raised, the longitudinal beams M2, M4, and M6 are lowered away from the roof. The longitudinal beams M2, M4, and M6 rest on the cross beams H3 and H1. The moving jack 5 uses the No. 1 support frame as a reaction force to support and push the No. 2 support frame to move. After the No. 2 support frame moves one step, the hydraulic column 3 on the No. 2 support frame unfolds, the longitudinal beams M2, M4, and M6 support the roof, and the side push jack 6 unfolds to support the side of the roadway.

[0027] When the No. 1 support frame is moved, the No. 2 support frame is fixed. The hydraulic column 3 on the No. 1 support frame is raised, and the side push jack 6 is retracted. At the same time as the hydraulic column 3 is raised, the longitudinal beams M1, M3, and M5 are lowered away from the roof. The longitudinal beams M1, M3, and M5 rest on the cross beams H4 and H2. The moving jack 5 uses the No. 2 support frame as a reaction force to pull the No. 1 support frame to move. After the No. 1 support frame moves one step, the hydraulic column 3 on the No. 1 support frame is extended, and the longitudinal beams M1, M3, and M5 support the roof. The side push jack 6 is extended to support the side wall of the tunnel.

[0028] The longitudinal beam 1 includes a fixed beam 1.1 and a telescopic beam 1.2. The telescopic beam 1.2 includes an outer telescopic beam 1.2.1 and an inner telescopic beam 1.2.2. The inner telescopic beam 1.2.2 is movably inserted into the outer telescopic beam 1.2.1. An inner push-moving cylinder 1.3 connects the inner telescopic beam 1.2.2 and the outer telescopic beam 1.2.1. The beam ends of the outer telescopic beam 1.2.1 and the fixed beam 1.1 are hinged. The fixed beam 1.1 and the telescopic beam 1.2 are hinged together to form the longitudinal beam of the advanced hydraulic support, which can adapt to different support conditions. The cross-sections of the outer telescopic beam 1.2.1, the inner telescopic beam 1.2.2, and the fixed beam 1.1 are square, providing sufficient support strength. The telescopic inner beam 1.2.2 is located inside the telescopic outer beam 1.2.1. It is extended by the inner push cylinder 1.3, lengthening the longitudinal beam. The telescopic inner beam 1.2.2 can extend or retract by 800mm. When the coal mining machine is cutting coal at the head or tail of the working face, the advanced hydraulic support does not move, and the telescopic inner beam 1.2.2 retracts to prevent interference between the coal mining machine and the advanced hydraulic support. When the coal mining machine moves away from the head, the telescopic inner beam 1.2.2 extends, increasing the support area of ​​the advanced hydraulic support and reducing the unsupported roof distance.

[0029] To assemble the telescopic beam 1.2, first install the connecting rod into the telescopic outer beam 1.2.1. Then connect the inner push cylinder 1.3 to the connecting rod. After connection, install the hydraulic hose of the inner push cylinder 1.3. Next, push the hydraulic hose and the inner push cylinder 1.3 together into the telescopic outer beam 1.2.1. After pushing to a certain position, pull the hose out from the opening at the rear of the telescopic outer beam 1.2.1. Then connect the telescopic inner beam 1.2.2 to the inner push cylinder 1.3 and push them together into the telescopic outer beam 1.2.1. After passing the lead screw of the connecting rod through the fixing hole of the telescopic outer beam 1.2.1, secure it with a nut and reinforce it with a pin.

[0030] The hinge axis between the longitudinal beam 1 and the transverse beam 2 is parallel to the longitudinal beam 1; the hinge axis between the transverse beam 2 and the hydraulic column 3 is parallel to the transverse beam 2; the hinge axis between the telescopic outer beam 1.2.1 and the fixed beam 1.1 is parallel to the transverse beam 2; the hinge axis between the moving frame jack 5 and the transverse beam 2 is parallel to the transverse beam 2.

[0031] The jack 5 is connected between the odd-numbered crossbeam 2 and the even-numbered crossbeam 2 in the middle of the row; the hinge axis of the telescopic outer beam 1.2.1 and the fixed beam 1.1 is located between the odd-numbered crossbeam 2 and the even-numbered crossbeam 2 in the middle of the row.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic sliding hydraulic support for roadways with a top beam, characterized in that: Each group of the advanced hydraulic support of the sliding roadway comprises an upper row of longitudinal beams (1) and a lower row of transverse beams (2), the row of longitudinal beams (1) is divided into two groups according to odd and even numbers, the row of transverse beams (2) is divided into two groups according to odd and even numbers, the odd-numbered longitudinal beam (1) is hinged with the odd-numbered transverse beam (2), the even-numbered longitudinal beam (1) is hinged with the even-numbered transverse beam (2), the lower transverse beam (2) is hinged with a hydraulic prop (3), the bottom of the hydraulic prop (3) is provided with a prop shoe (4); the advanced hydraulic support further comprises a moving support jack (5), the moving support jack (5) is hinged between the adjacent odd-numbered transverse beam (2) and even-numbered transverse beam (2).

2. The telescopic roof support according to claim 1, characterized in that: The longitudinal beam (1) comprises a fixed beam (1.1) and a telescopic beam (1.2), the telescopic beam (1.2) comprises a telescopic outer beam (1.2.1) and a telescopic inner beam (1.2.2), the telescopic inner beam (1.2.2) is movably inserted into the telescopic outer beam (1.2.1), an inner push oil cylinder (1.3) is connected between the telescopic inner beam (1.2.2) and the telescopic outer beam (1.2.1), and the beam ends of the telescopic outer beam (1.2.1) and the fixed beam (1.1) are hinged.

3. The telescopic roof beam type roadway advanced hydraulic support of claim 1, wherein: The two side beam ends of the transverse beam (2) are provided with side push jacks (6).

4. The roof beam telescopic sliding type roadway advanced hydraulic support according to claim 2, characterized in that: The hinging shafts between the longitudinal beam (1) and the transverse beam (2) are parallel to the longitudinal beam (1); the hinging shafts between the transverse beam (2) and the hydraulic prop (3) are parallel to the transverse beam (2); the hinging shafts between the telescopic outer beam (1.2.1) and the fixed beam (1.1) are parallel to the transverse beam (2); and the hinging shafts between the moving support jack (5) and the transverse beam (2) are parallel to the transverse beam (2).

5. The telescopic roof beam type roadway advanced hydraulic support of claim 2, characterized in that: The moving support jack (5) is connected between the odd-numbered transverse beam (2) and the even-numbered transverse beam (2) in the middle of the row; the hinging shafts between the telescopic outer beam (1.2.1) and the fixed beam (1.1) are located in the middle of the odd-numbered transverse beam (2) and the even-numbered transverse beam (2).

6. The telescopic roof beam type roadway advanced hydraulic support of claim 3, characterized in that: The side push jack (6) is parallel to the transverse beam (2).

7. The telescopic roof beam type roadway advanced hydraulic support of claim 2, characterized in that: The cross sections of the telescopic outer beam (12.1), the telescopic inner beam (1.2.2) and the fixed beam (1.1) are square.

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