CN213478374U - Self-walking temporary supporting structure for coal mine tunnel - Google Patents
Self-walking temporary supporting structure for coal mine tunnel Download PDFInfo
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- CN213478374U CN213478374U CN202022455616.1U CN202022455616U CN213478374U CN 213478374 U CN213478374 U CN 213478374U CN 202022455616 U CN202022455616 U CN 202022455616U CN 213478374 U CN213478374 U CN 213478374U
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Abstract
The utility model discloses a self-walking temporary supporting structure for coal mine tunnel, belonging to the field of coal mining supporting equipment; the device comprises at least 4 door-shaped supporting leg groups; the door-shaped supporting leg groups are sequentially arranged, and each door-shaped supporting leg group can stretch out and draw back along the vertical direction; a plurality of pressure-bearing longitudinal beams are arranged at the upper top of the door-shaped supporting leg group; the length of each pressure-bearing longitudinal beam at least needs to span three groups of door-shaped supporting legs; a walking hydraulic jack is also arranged between the door-shaped supporting leg groups in the middle part; the utility model discloses can guarantee to have at least a set of hydraulic support to strut the top of coal face, solve and used traditional hydraulic support and operation method at the coal face installation overlength consuming time, and then cause the problem that the coal face tunnel collapses and coal mining efficiency is low.
Description
Technical Field
The utility model relates to a coal mining supporting equipment field especially relates to a coal mine tunnel temporary support structure from walking.
Background
Due to the national conditions and the complexity of geological conditions of coal fields, blasting excavation and fully mechanized excavating machine mining are still the most main mining modes of coal mines. The top of the blasting and excavating working face is supported by mostly single hydraulic props and hinged top beams, and individual local coal mines are also supported by metal props or wood pillars. In the tunneling process, when the distance between the fully-mechanized excavating machine and the supporting structure exceeds a certain distance, the coal cutting is stopped, then the mining area is cleaned, and the coal mining can be restarted after the top of the roadway of the goaf is supported by using a hydraulic support, a metal strut or a wood column. A large amount of time is consumed in the process, and the top of the roadway of the coal face is in an undersupply state at the moment. In places where the geology is unstable, there is a high likelihood of collapse. Meanwhile, stopping is needed at intervals, which greatly affects the coal mining efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the self-walking temporary supporting structure for the coal mine tunnel is provided, the top of a coal face is supported by at least one group of hydraulic supports, and the problems that the time consumption for installation on the coal face is too long by using a traditional hydraulic support and an operation method, the coal face tunnel collapse is caused, and the coal mining efficiency is low are solved.
In order to solve the above problem, the utility model provides a following technical scheme:
a self-walking coal mine roadway temporary supporting structure comprises at least 4 door-shaped supporting leg groups; the door-shaped supporting leg groups are sequentially arranged, and each door-shaped supporting leg group can stretch out and draw back along the vertical direction; a plurality of pressure-bearing longitudinal beams are arranged at the upper top of the door-shaped supporting leg group; the length of each pressure-bearing longitudinal beam at least needs to span three groups of door-shaped supporting legs; a walking hydraulic jack is also arranged between the door-shaped supporting leg groups in the middle.
Preferably, the portal support leg groups are four groups, and are sequentially a first portal support leg group, a second portal support leg group, a third portal support leg group and a fourth portal support leg group from the coal mining working face to the outside of the roadway; the pressure-bearing longitudinal beams are divided into two groups, namely a first pressure-bearing longitudinal beam for connecting the first gate-shaped support leg group and the third gate-shaped support leg group and a second pressure-bearing longitudinal beam for connecting the second gate-shaped support leg group and the fourth gate-shaped support leg group; and a walking hydraulic jack is arranged between the second portal type supporting leg group and the third portal type supporting leg group.
Furthermore, every door type landing leg group is including setting up the hydraulic stretching support column at both ends about, and the flexible position in top is connected with the location crossbeam on two hydraulic stretching support columns.
Furthermore, the positioning beam is of a box body structure with a hollow interior, and two expansion jacks are arranged in an inner cavity of the positioning beam; the end side of the expansion jack extending out of the positioning cross beam is hinged with the hydraulic telescopic supporting column.
Furthermore, a wedge-shaped guide block and a positioning column are also arranged on the positioning beam; two sides of the pressure-bearing longitudinal beam are respectively arranged on the positioning columns; the wedge-shaped guide block is arranged at the position where the middle part of the pressure-bearing longitudinal beam is crossed with the positioning cross beam.
Furthermore, the wedge-shaped guide block and the positioning column on each positioning cross beam are paired, and the wedge-shaped guide block and the positioning column are symmetrically arranged by taking the center line of the positioning cross beam as a symmetry axis; the first gate-shaped support leg group and the third gate-shaped support leg group have the same structure, and the second gate-shaped support leg group and the fourth gate-shaped support leg group have the same structure; the middle opening of the wedge-shaped guide block is of a structure with a wide upper part and a narrow lower part.
Furthermore, an auxiliary longitudinal beam is hinged on a positioning cross beam of the first door-shaped support leg group; the mounting height of the auxiliary longitudinal beam is not lower than that of the pressure-bearing longitudinal beam, and an angle adjusting jack is further arranged between the auxiliary longitudinal beam and the positioning cross beam.
Preferably, the number of the walking hydraulic jacks is two, and two ends of the walking hydraulic jacks which are symmetrically arranged are respectively arranged in the middle of the positioning cross beam on the second portal type supporting leg group and the third portal type supporting leg group; the two walking hydraulic jacks are in specification and are in a cooperative structure; the two hydraulic telescopic supporting columns on each door-shaped supporting leg group are also of the same specification and mutually cooperative structures.
The utility model discloses beneficial effect:
the utility model discloses a from interim supporting construction in colliery tunnel of walking is organized by a plurality of door type landing legs of group to and install the interim supporting construction that walking hydraulic jack and pressure-bearing crossbeam between door type landing leg group are connected and are constituteed. When the hydraulic telescopic supporting columns of any one group of gate-shaped supporting leg group are separated from the support of the top of the roadway and move forwards under the action of the walking hydraulic jack, at least one group of gate-shaped supporting leg group continues to support the top of the roadway of the coal face, and the top of the roadway of the coal face is ensured to be always in a protected state. Meanwhile, the blank area of the temporary supporting structure after moving forward can be filled by using a traditional hydraulic support within the working time period of the coal mining machine, the coal mining machine does not need to stop to wait for the hydraulic support to be fixed and then can be constructed, and the working efficiency of coal mining is improved. Moreover, the auxiliary longitudinal beam arranged at the front part of the door-shaped supporting leg group at the forefront can increase the supporting area and send the net bag and the like to the top of the roadway, and the practicability of the temporary supporting structure is improved. The expansion jack that sets up in the location crossbeam can adjust temporary support structure's width and satisfy the tunnel support demand of different width, increases temporary support structure's suitability.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
figure 4 is a schematic diagram of the three-dimensional structure of the device of the present invention;
FIG. 5 is a schematic diagram of the structure of a single gate-type leg set in the present embodiment;
description of reference numerals: 1. door type landing leg group, 1A, first door type landing leg group, 1B, second door type landing leg group, 1C, third door type landing leg group, 1D, fourth door type landing leg group, 2, pressure-bearing longeron, 3, walking hydraulic jack, 4, auxiliary longitudinal beam, 5, angle modulation jack, 6, expansion jack, 101, hydraulic telescoping support column, 102, location crossbeam, 103, wedge guide block, 104, reference column.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
example (b):
referring to fig. 1, the embodiment provides a self-walking temporary supporting structure for a coal mine roadway, which comprises door-shaped supporting leg groups 1 with the number not less than 4; the door-shaped supporting leg groups 1 are sequentially arranged, and each door-shaped supporting leg group 1 can stretch out and draw back along the vertical direction; a plurality of pressure-bearing longitudinal beams 2 are arranged at the upper top of the door-shaped supporting leg group 1; the length of each pressure-bearing longitudinal beam 2 at least needs to span three groups of door-shaped supporting leg groups 1; a walking hydraulic jack 3 is also arranged between the door-shaped supporting leg groups at the middle part.
The portal type support leg group 1 has four groups, and is sequentially arranged from the coal mining working face to the outside of a roadway as a first portal type support leg group 1A, a second portal type support leg group 1B, a third portal type support leg group 1C and a fourth portal type support leg group 1D; the pressure-bearing longitudinal beams 2 are divided into two groups, namely a first pressure-bearing longitudinal beam 2A for connecting the first gate-shaped landing leg group 1A and the third gate-shaped landing leg group 1C and a second pressure-bearing longitudinal beam 2B for connecting the second gate-shaped landing leg group 1B and the fourth gate-shaped landing leg group 1D; a walking hydraulic jack 3 is arranged between the second portal type supporting leg group 1B and the third portal type supporting leg group 1C.
Each door-shaped supporting leg group 1 comprises hydraulic telescopic supporting columns 101 arranged at the left end and the right end, and positioning cross beams 102 are connected to the telescopic end positions at the top parts of the two hydraulic telescopic supporting columns 101.
The positioning beam 102 is a box structure with a hollow interior, and two expansion jacks 6 are arranged in an inner cavity of the positioning beam 102; the end side of the expansion jack 6 extending out of the positioning beam 102 is hinged with the hydraulic telescopic supporting column 101. The jacks used in the embodiment are all hydraulic jack structures. The width of the temporary supporting structure can be adjusted by controlling the extension and retraction of the piston rod of the expansion jack 6 so as to meet the requirements of roadway supporting with different widths.
A wedge-shaped guide block 103 and a positioning column 104 are further arranged on the positioning beam 102; two sides of the pressure-bearing longitudinal beam 2 are respectively arranged on the positioning columns 104; the wedge guide block 103 is provided at a position where the middle of the pressure-bearing longitudinal beam 2 intersects with the positioning cross beam 102.
The wedge-shaped guide blocks 103 and the positioning columns 104 on each positioning cross beam 102 are paired, and the wedge-shaped guide blocks 103 and the positioning columns 104 are symmetrically arranged by taking the center line of the positioning cross beam 102 as a symmetry axis; the first gate-type leg group 1A and the third gate-type leg group 1C have the same structure, and the second gate-type leg group 1B and the fourth gate-type leg group 1D have the same structure; the middle opening of the wedge-shaped guide block 103 is a structure with a wide top and a narrow bottom. When the pressure-bearing longitudinal beam 2 moves upwards or downwards under the driving of the jacking hydraulic jack 5, the pressure-bearing longitudinal beam 2 can be smoothly clamped in the wedge-shaped guide block 103. And when the walking hydraulic jack 8 drives the pressure-bearing longitudinal beam 2 to move forwards, the pressure-bearing longitudinal beam 2 slides in the wedge-shaped guide block 103, so that the walking unit is prevented from deviating. Preferably, a pulley structure can be added into the wedge-shaped groove, so that the sliding friction force between the pressure-bearing longitudinal beam 2 and the wedge-shaped groove is reduced, and the walking unit can move more easily.
An auxiliary longitudinal beam 4 is hinged on a positioning cross beam 102 of the first door-shaped support leg group 1A; the installation height of the auxiliary longitudinal beam 4 is not lower than that of the pressure-bearing longitudinal beam 2, and an angle adjusting jack 5 is arranged between the auxiliary longitudinal beam 4 and the positioning cross beam 102. The angle adjusting jack 5 has the function of supporting the auxiliary longitudinal beam 4 to prop against the top of the roadway. Can also be through the end of shrink angle adjusting jack 5 with supplementary longeron 4 down, make things convenient for the staff to place devices such as string bag on supplementary longeron 4, supplementary longeron 4 sends the string bag to the tunnel top, and the staff only need beat the rivet can be fixed the tunnel top with the string bag, need not to reuse long objects such as bamboo pole to operate, increases the security of site operation.
The two walking hydraulic jacks 3 are symmetrically arranged at two ends and are respectively arranged in the middle of the positioning beam 102 on the second portal type supporting leg group 1B and the third portal type supporting leg group 1C; the two walking hydraulic jacks are 3 in specification and are in a cooperative structure; the two hydraulic telescopic supporting columns 101 on each door-shaped supporting leg group 1 are also of the same specification and are of mutually cooperative structures.
The utility model also discloses a self-walking method of the temporary supporting structure of self-walking coal mine tunnel, including following step:
s1, determining that all parts are not damaged and reliably connected with each other, and determining that all the hydraulic telescopic rods and the hydraulic jacks are in a load state;
s2, controlling the hydraulic telescopic supporting columns 101 on the second gate-shaped supporting leg group 1B and the fourth gate-shaped supporting leg group 1D to contract, enabling the bases of the hydraulic telescopic supporting columns 101 to leave the ground, and clamping the pressure-bearing longitudinal beams 2 on the second gate-shaped supporting leg group 1B and the fourth gate-shaped supporting leg group 1D in the middle of the wedge-shaped guide blocks 103 below correspondingly; at the moment, the first door-shaped support leg group 1A and the third door-shaped support leg group 1C are used as supports;
s3, controlling the walking hydraulic jack 3 to extend to drive the second door-shaped supporting leg group 1B and the fourth door-shaped supporting leg group 1D to move forwards;
s4, after the second gate-shaped supporting leg group 1B and the fourth gate-shaped supporting leg group 1D move to reach the designated positions, a piston rod of a hydraulic telescopic supporting column 101 on the second walking unit 10 is controlled to extend out, so that a base of the hydraulic telescopic supporting column 101 is contacted with the ground, and the pressure-bearing longitudinal beam 2 is enabled to support the top of a roadway continuously in a pressurizing mode, so that self-walking of the second gate-shaped supporting leg group 1B and the fourth gate-shaped supporting leg group 1D is completed;
and S5, operating the second gate-type leg group 1B and the fourth gate-type leg group 1D, and operating the first gate-type leg group 1A and the third gate-type leg group 1C according to the steps S1 to S5 to complete the self-walking function of the whole device.
Before and after the second portal type supporting leg group 1B is operated to carry out self-walking, the contraction/extension of the angle adjusting jack 5 needs to be operated to release/support the supporting effect of the auxiliary longitudinal beam 4 on the top of the roadway.
Claims (8)
1. The utility model provides a coal mine tunnel temporary support structure from walking which characterized in that: comprises at least 4 door-shaped supporting leg groups (1); the door-shaped supporting leg groups (1) are sequentially arranged, and each door-shaped supporting leg group (1) can stretch out and draw back along the vertical direction; a plurality of pressure-bearing longitudinal beams (2) are arranged at the upper top of the door-shaped supporting leg group (1); the length of each pressure-bearing longitudinal beam (2) at least needs to span three groups of door-shaped supporting leg groups (1); a walking hydraulic jack (3) is also arranged between the door-shaped supporting leg groups at the middle part.
2. A self-propelled temporary support structure for coal mine tunnels according to claim 1, which is characterized in that: the portal type supporting leg groups (1) are four groups in total, and are sequentially a first portal type supporting leg group (1A), a second portal type supporting leg group (1B), a third portal type supporting leg group (1C) and a fourth portal type supporting leg group (1D) in the direction from the coal mining working face to the outside of the roadway; the pressure-bearing longitudinal beams (2) are divided into two groups, namely a first pressure-bearing longitudinal beam (2A) for connecting a first gate-shaped supporting leg group (1A) and a third gate-shaped supporting leg group (1C) and a second pressure-bearing longitudinal beam (2B) for connecting a second gate-shaped supporting leg group (1B) and a fourth gate-shaped supporting leg group (1D); a walking hydraulic jack (3) is arranged between the second portal type supporting leg group (1B) and the third portal type supporting leg group (1C).
3. A self-propelled temporary support structure for a coal mine roadway as claimed in claim 1 or 2, wherein: each door-shaped supporting leg group (1) comprises hydraulic telescopic supporting columns (101) arranged at the left end and the right end, and a positioning cross beam (102) is connected to the telescopic end position at the top of the two hydraulic telescopic supporting columns (101).
4. A self-propelled temporary support structure for coal mine tunnels according to claim 3, wherein: the positioning cross beam (102) is of a box body structure with a hollow interior, and two expansion jacks (6) are arranged in the inner cavity of the positioning cross beam (102); the end side of the expansion jack (6) extending out of the positioning cross beam (102) is hinged with the hydraulic telescopic supporting column (101).
5. A self-propelled temporary support structure for coal mine tunnels according to claim 3, wherein: a wedge-shaped guide block (103) and a positioning column (104) are also arranged on the positioning beam (102); two sides of the pressure-bearing longitudinal beam (2) are respectively arranged on the positioning columns (104); the wedge-shaped guide block (103) is arranged at the position where the middle part of the pressure-bearing longitudinal beam (2) is crossed with the positioning cross beam (102).
6. A self-propelled temporary support structure for coal mine tunnels according to claim 5, wherein: the wedge-shaped guide block (103) and the positioning column (104) on each positioning cross beam (102) are paired, and the wedge-shaped guide block (103) and the positioning column (104) are symmetrically arranged by taking the center line of the positioning cross beam (102) as a symmetry axis; the first gate-shaped support leg group (1A) and the third gate-shaped support leg group (1C) are identical in structure, and the second gate-shaped support leg group (1B) and the fourth gate-shaped support leg group (1D) are identical in structure; the middle opening of the wedge-shaped guide block (103) is of a structure with a wide upper part and a narrow lower part.
7. A self-propelled temporary support structure for coal mine tunnels according to claim 2, wherein: an auxiliary longitudinal beam (4) is hinged on a positioning cross beam (102) of the first door-shaped support leg group (1A); the mounting height of the auxiliary longitudinal beam (4) is not lower than that of the pressure-bearing longitudinal beam (2), and an angle adjusting jack (5) is arranged between the auxiliary longitudinal beam (4) and the positioning cross beam (102).
8. A self-propelled temporary support structure for coal mine tunnels according to claim 1, which is characterized in that: the two walking hydraulic jacks (3) are respectively and symmetrically arranged, and the two ends of the two walking hydraulic jacks are respectively arranged in the middle of the positioning beam (102) on the second gate-shaped supporting leg group (1B) and the third gate-shaped supporting leg group (1C); the two walking hydraulic jacks (3) are in the specification and are in a cooperative structure; the two hydraulic telescopic supporting columns (101) on each door-shaped supporting leg group (1) are also of the same specification and mutually cooperative structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455616.1U CN213478374U (en) | 2020-10-29 | 2020-10-29 | Self-walking temporary supporting structure for coal mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455616.1U CN213478374U (en) | 2020-10-29 | 2020-10-29 | Self-walking temporary supporting structure for coal mine tunnel |
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| Publication Number | Publication Date |
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| CN213478374U true CN213478374U (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022455616.1U Active CN213478374U (en) | 2020-10-29 | 2020-10-29 | Self-walking temporary supporting structure for coal mine tunnel |
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| CN (1) | CN213478374U (en) |
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