CN111852524A - Hydraulic support group special for withdrawing coal mine fully-mechanized coal mining face hydraulic support and withdrawing method thereof - Google Patents
Hydraulic support group special for withdrawing coal mine fully-mechanized coal mining face hydraulic support and withdrawing method thereof Download PDFInfo
- Publication number
- CN111852524A CN111852524A CN202010891021.2A CN202010891021A CN111852524A CN 111852524 A CN111852524 A CN 111852524A CN 202010891021 A CN202010891021 A CN 202010891021A CN 111852524 A CN111852524 A CN 111852524A
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- Prior art keywords
- hydraulic support
- support
- longitudinal
- withdrawing
- transverse
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/606—Devices for withdrawing props or chocks the props being moved systematically
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Abstract
The invention discloses a hydraulic support group special for withdrawing a hydraulic support on a fully mechanized mining face of a coal mine and a withdrawing method thereof. When the support is removed, the support group consisting of the transverse hydraulic support and the longitudinal hydraulic support actively supports the exposed top plate in time, so that the timely and effective support is realized, personnel work under the supported top plate, the personnel and equipment are protected, and the safety is higher.
Description
Technical Field
The invention relates to the technical field of mining safety, in particular to a hydraulic support group special for withdrawing a hydraulic support of a fully mechanized coal mining face and a withdrawing method thereof.
Background
With the continuous improvement of the technical level of coal mining, the specification and the size of large equipment are continuously increased, and particularly, the fully-mechanized mining hydraulic support with large working resistance and large mining height is widely used, and the withdrawing process of the support also needs to be continuously improved and perfected.
At present, large coal mines in Nemeng and Shaanxi regions are taken as main countries, and the support withdrawing process is mainly a single-lane or double-lane withdrawing process method. As shown in fig. 1, the specific method is as follows: and constructing a working surface equipment withdrawal roadway by using the stack type support D, the single upright posts, the anchor rods, the anchor cables and the roof laying net. When the working face support (to-be-withdrawn support B) is withdrawn, the shield support C is used for temporary support, the empty top above the withdrawn support is supported by a wood buttress A which is manually erected, and the wood buttress A which is manually erected is left on the side of the old pond along with the withdrawal and propulsion of the support.
The traditional fully mechanized mining support withdrawing process and equipment have the following defects:
A. the safety is low: the wood buttress is adopted for supporting, personnel need not support the operation under the roof, has the safety risk, and wood buttress poor stability, the height can not be adjusted, can not initiatively support the roof of withdrawing the triangular space, supports the protection roof ability relatively poor.
B. The efficiency is low: the manual setting of the wood pile has long time, low efficiency and long working surface withdrawing time.
C. The cost is high: the wood pile can not be recycled, which causes the waste of raw materials.
Disclosure of Invention
Aiming at the technical problems, the invention provides a safer, more efficient, more economical and more economical process method and special withdrawing equipment, and therefore, the invention provides a special hydraulic support group for withdrawing a hydraulic support on a large mining height working surface and a withdrawing method thereof.
The adopted technical scheme is as follows:
on one hand, the invention provides a hydraulic support group special for withdrawing a hydraulic support on a fully mechanized coal mining face, the support group comprises a transverse hydraulic support and a longitudinal hydraulic support, the transverse hydraulic support is vertically arranged at the front end of the longitudinal hydraulic support, a horizontal telescopic part used for mutual displacement along the length direction of the longitudinal hydraulic support is arranged between the transverse hydraulic support and the longitudinal hydraulic support, one end of the horizontal telescopic part is connected with the transverse hydraulic support, and the other end of the horizontal telescopic part is connected with the longitudinal hydraulic support.
The transverse hydraulic support comprises a top beam I, a base I and a telescopic supporting column I arranged between the top beam I and the base I.
The rear end of the top beam I is further hinged with a turnover tail beam, and the turnover tail beam is connected with the base I through the telescopic support column I.
Preferably, one side of back timber I that keeps away from vertical hydraulic support articulates there is at least one upset curb girder I, the downside of upset curb girder I articulates with one end of one or more upset jack I mutually, the other end of upset jack I with back timber I is articulated mutually.
The plurality of overturning side beams I can be arranged along the length direction of one side of the transverse hydraulic support, and each overturning side beam I controls the corresponding overturning jack I to retract and release.
Further, the longitudinal hydraulic support comprises a first longitudinal hydraulic support and a second longitudinal hydraulic support which are arranged in parallel, and the first longitudinal hydraulic support and the second longitudinal hydraulic support respectively comprise a top beam II, a base II, a telescopic supporting column II and a shield beam II; the telescopic support column II is arranged between the top beam II and the base II; the horizontal telescopic part is a hydraulic telescopic assembly, the horizontal telescopic part is horizontally arranged in the middle of the base II, a fixing hole is formed in the front end of the horizontal telescopic part, a hanging lug is arranged on the side face of the base I, and the hanging lug is connected with the fixing hole through a pin shaft.
Furthermore, the first longitudinal hydraulic support is arranged on the overturning tail beam side (old pond side) of the top beam I, a side cantilever beam is arranged on one side, close to the old pond, of the first longitudinal hydraulic support, one side of the side cantilever beam is hinged to the top beam II, the lower side face of the side cantilever beam is hinged to one end of one or more overturning jacks II, and the other end of each overturning jack II is hinged to the top beam II.
The second longitudinal hydraulic support is provided with at least one, the second longitudinal hydraulic support and the first longitudinal hydraulic support are arranged in parallel, and the side surface of each second longitudinal hydraulic support is provided with a side adjusting device capable of adjusting the distance between the adjacent supports.
The vertical hydraulic support is connected with a base I which is arranged right ahead of the vertical hydraulic support and corresponds to the horizontal hydraulic support through the horizontal telescopic piece, and the horizontal hydraulic support is as high as the vertical hydraulic support in support height.
In another aspect, the present invention further provides a hydraulic support set retracting method, including the following steps:
step 4, controlling the top beam II of the longitudinal hydraulic support to descend, separating from supporting the top plate, controlling the horizontal telescopic piece to contract along the length direction of the longitudinal hydraulic support, enabling the horizontal telescopic piece to pull the longitudinal hydraulic support to move towards the direction of the support to be removed, driving the longitudinal hydraulic support to move for a certain distance, and enabling the top beam II to rise to support the top plate again;
and 5, sequentially and repeatedly executing the step 3 and the step 4 until the transverse hydraulic support is moved to the support position of the removed support.
And (3) hinging a plurality of overturning side beams I on the top beam I of the transverse hydraulic support, and when the support to be removed is gradually moved forwards to ensure that the space left behind is enough for one overturning side beam I positioned behind to be completely opened, driving an overturning jack I below the overturning side beam I to expand the support, and partially supporting the empty top plate until the support to be removed is completely moved out of the original supporting position, so that all the overturning side beams I are sequentially expanded from back to front.
The technical scheme of the invention has the following advantages:
A. when the support is removed, the support group consisting of the transverse hydraulic support and the longitudinal hydraulic support actively supports the exposed top plate in time, so that the timely and effective support is realized, personnel work under the supported top plate, the personnel and equipment are protected, and the safety is higher.
B. According to the invention, the plurality of overturning side beams I are arranged on one side of the transverse hydraulic support close to the support to be retracted, so that the exposed top plate part of the support after retraction can be supported in time, a wood stack does not need to be built, the support moving speed is high, and the support retraction time of the whole working face is effectively reduced.
C. When the support group is used, the support group is positioned in two side caving areas, the overturning tail beam of the transverse hydraulic support, the side cantilever beam of the first longitudinal hydraulic support I and the rear shield beam of each longitudinal hydraulic support form gangue isolation for the two side caving areas together, and the lower part operation space of the support is protected.
D. The invention does not need to set up a wood stack, avoids wood waste and greatly saves the cost for withdrawing the bracket.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.
FIG. 1 illustrates a prior art hydraulic support retraction;
fig. 2 is a schematic structural view of a hydraulic support set dedicated for retraction provided by the present invention;
fig. 3 is a schematic structural view of a retraction-dedicated hydraulic bracket set at another angle provided by the present invention;
fig. 4 is a schematic structural view of a transverse hydraulic support in the hydraulic support group for retraction provided by the present invention;
fig. 5 is a schematic structural view of a first longitudinal hydraulic support in the set of hydraulic supports dedicated for retraction provided by the present invention;
fig. 6 is a schematic structural view of a second longitudinal hydraulic support in the set of hydraulic supports dedicated for retraction according to the present invention;
fig. 7 is a flowchart of a hydraulic support set retracting method provided by the present invention.
Description of reference numerals:
1-transverse hydraulic support
11-top beam I, 12-base I, 121-hanging lug and 13-telescopic support column I
14-overturning side beam I, 15-overturning jack I, 16-overturning tail beam
2-longitudinal hydraulic support
21-first longitudinal Hydraulic support, 211-side outrigger, 212-overturning Jack II
22-second longitudinal hydraulic support, 221-side adjustment device
2 a-top beam II, 2 b-base II, 2 c-telescopic support column II, 2 d-shield beam
3-horizontal telescopic part, 31-fixing hole;
a-wood crib; b-a stent to be withdrawn; c-shield support; d-a stack support.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 2 and 3, the invention provides a hydraulic support group special for withdrawing a hydraulic support on a fully mechanized coal mining face, which comprises a transverse hydraulic support 1 and a longitudinal hydraulic support 2, wherein the transverse hydraulic support 1 is vertically arranged at the front end of the longitudinal hydraulic support 2, a horizontal telescopic part 3 which is used for mutual displacement along the length direction of the longitudinal hydraulic support 2 is arranged between the transverse hydraulic support 1 and the longitudinal hydraulic support 2, one end of the horizontal telescopic part 3 is connected with the transverse hydraulic support 1, and the other end of the horizontal telescopic part is connected with the longitudinal hydraulic support 2. When the support B to be removed is withdrawn from the original position, the transverse hydraulic support 1 descends, the transverse hydraulic support 1 is pushed forwards to move to the position of the removed support through the extension of the horizontal telescopic part 3, the transverse hydraulic support is lifted to support the top plate, the longitudinal hydraulic support 2 descends to be separated from supporting the top plate at the moment, the horizontal telescopic part 3 contracts, the longitudinal hydraulic support 2 is pulled to move, the longitudinal hydraulic support is lifted again after the movement to support the top plate right above the longitudinal hydraulic support, and the support group is moved forwards once. If the horizontal telescopic piece 3 can not make the horizontal hydraulic support 1 in place by once expansion, the horizontal hydraulic support 1 and the longitudinal hydraulic support 2 can be repeatedly pushed, pulled and displaced for two or more times. The supporting position of the transverse hydraulic support 1 can be kept consistent with that of the support B to be removed, the empty top position of the removed support is well supported, supporting dead angles are avoided, and the safety of operators below the support is protected.
The number of the transverse hydraulic supports 1 can be two or more, the number of the longitudinal hydraulic supports 2 can also be two or more, the transverse hydraulic supports 1 are arranged in a row in the transverse direction, and the longitudinal hydraulic supports 2 are connected with the corresponding transverse hydraulic supports 1 arranged right in front of the longitudinal hydraulic supports through the corresponding horizontal telescopic pieces 3. In the invention, a group of support groups formed by one transverse hydraulic support and two longitudinal hydraulic supports 2 are preferably adopted, and the transverse hydraulic support 1 and the two longitudinal hydraulic supports 2 are mutually matched in a push-pull mode through a horizontal telescopic part, so that the top space of the removed support is supported.
Specifically, as shown in fig. 4, the transverse hydraulic support 1 includes a top beam I11, a base I12, and a telescopic support column I13 disposed between the top beam I11 and the base I12, an overturning side beam I14 is preferably hinged to a side of the top beam I11 away from the longitudinal hydraulic support 2, a lower side of the overturning side beam I14 is hinged to one end of one or more overturning jacks I15, and the other end of the overturning jack I15 is hinged to the top beam I11. The turning side beams I14 may be provided in two, three or more depending on the length of the transverse hydraulic bracket 1, and each turning side beam I14 is controlled by a corresponding turning jack I15. When the bracket B to be removed is removed, each overturning side beam I is sequentially opened from back to front, and the top space of the bracket B to be removed is supported in sequence, so that the bracket B can be timely supported in the process of removing the bracket on the working face, and the empty top time is effectively reduced. Meanwhile, a stabilizing mechanism (a four-link type or a vertical guide rod type, or other forms) is arranged on the transverse hydraulic support 1, so that the stability of the top beam I11 is further improved.
Further preferably, the rear end of the top beam I11 is hinged with a turnover tail beam 16, and the turnover tail beam 16 is connected with the base I12 through a telescopic supporting column I13, so that the old pond side position can be supported.
As shown in fig. 5 and fig. 6, the longitudinal hydraulic support 2 includes a first longitudinal hydraulic support 21 and a second longitudinal hydraulic support 22 which are arranged side by side, and each of the first longitudinal hydraulic support 21 and the second longitudinal hydraulic support 22 includes a top beam II22a, a base II22b, and a telescopic support column II22c and a shield beam II2d which are arranged between the top beam II22a and the base II22 b; the horizontal telescopic part 3 is a hydraulic telescopic part or other electric telescopic parts, and is horizontally arranged on the base II22b, a fixing hole 31 is formed at the front end of the horizontal telescopic part 3, a hanging lug 121 is arranged on the side surface of the base I12, and the hanging lug 121 is connected with the fixing hole 31 through a pin shaft, which can be seen from fig. 3.
The first longitudinal hydraulic support 21 shown in fig. 5 is arranged close to the old pond side, a side cantilever beam 211 is arranged on one side of the first longitudinal hydraulic support 21 close to the old pond, one side of the side cantilever beam 211 is hinged to a top beam II22a, a turning jack II212 is hinged between the side cantilever beam 211 and the top beam II22a, a plurality of side cantilever beams 211 can be arranged, and when the hydraulic support is used, one, some or all side cantilever beams 211 are controlled to be unfolded according to specific conditions, so that the top of the old pond side can be supported.
As shown in fig. 6, one or more second longitudinal hydraulic supports 22 may be provided, each second longitudinal hydraulic support 22 is arranged in parallel with the first longitudinal hydraulic support 21, and preferably, a side adjusting device 221 for adjusting the distance between adjacent supports is provided at the side of the second longitudinal hydraulic support 22.
As shown in fig. 7, the present invention further provides a hydraulic support group retracting method, including the following steps:
(S1) respectively hinging two ends of a horizontal telescopic piece 3 on bases of a transverse hydraulic support 1 and a longitudinal hydraulic support 2;
(S2) controlling the top beam of the bracket to be removed close to the transverse hydraulic bracket to descend, so that the bracket to be removed is separated from supporting the top plate, and is driven to move forwards out of the original supporting position;
(S3) controlling the top beam I of the transverse hydraulic support to descend, separating from supporting the top plate, controlling the horizontal telescopic piece to extend out along the length direction of the longitudinal hydraulic support, enabling the horizontal telescopic piece to push the transverse hydraulic support to move towards the direction of the support to be removed, and driving the transverse hydraulic support to move for a certain distance, and enabling the top beam I to lift to support the top plate again;
(S4) controlling the top beam II of the longitudinal hydraulic support to descend, separating from supporting the top plate, controlling the horizontal telescopic piece to contract along the length direction of the longitudinal hydraulic support, enabling the horizontal telescopic piece to pull the longitudinal hydraulic support to move towards the direction of the support to be removed, driving the longitudinal hydraulic support to move for a certain distance, and enabling the top beam II to lift to support the top plate again;
and (S5), repeating the steps (S3) and (S4) in sequence until the transverse hydraulic support is moved to the support position of the withdrawn support.
The application of the bracket set shown in fig. 2 is described as an example, and comprises a transverse hydraulic bracket 1, a first longitudinal hydraulic bracket 21 and a second longitudinal hydraulic bracket 22. Wherein, the transverse hydraulic support 1 is provided with two turning side beams I.
(1) The top beam of the bracket B to be withdrawn close to the transverse hydraulic bracket 1 descends, is separated from supporting a top plate and moves forwards, and when the space left behind is enough to be positioned at one turning side beam I at the back and is completely opened, the turning jack I below the turning side beam I is driven to unfold the top beam I, and the empty top plate is partially supported;
(2) in the process of advancing or turning the support to be withdrawn, when the empty space is enough to completely open the front overturning side beam I, the overturning jack I below the support is driven to expand the empty top plate for partially supporting;
(3) controlling the top beam I of the transverse hydraulic support to descend, starting the horizontal telescopic piece to extend out, so as to push the transverse hydraulic support to move, and lifting the top beam I to support the top plate after moving the transverse hydraulic support for a certain distance;
(4) controlling the top beam II of the first longitudinal hydraulic support to descend, separating from supporting the top plate, and enabling the horizontal telescopic piece connected with the top beam II to contract, so as to drive the first longitudinal hydraulic support to move forwards, and lifting the top beam II to support the top plate again after the first longitudinal hydraulic support moves in place; then, the top beam II on the second longitudinal hydraulic support is lowered, the top plate is separated from being supported, and the horizontal telescopic piece connected with the top beam II is contracted, so that the second longitudinal hydraulic support is driven to move forwards, and the top beam II is operated to lift the supporting top plate after the second longitudinal hydraulic support moves in place; when the first or second longitudinal hydraulic support is skewed in the moving process, the position and the direction of the support are adjusted through the side adjusting device 221 on the side surface of the longitudinal hydraulic support.
(5) And (3) sequentially putting the two overturning side beams I in a withdrawing state, and sequentially and repeatedly executing the steps (3) and (4) to move the transverse hydraulic support, the first longitudinal hydraulic support and the second longitudinal hydraulic support in place, so that the withdrawing work flow of the support to be withdrawn is completed.
The invention has the advantages that the safety is improved, when the support is removed, the support group consisting of the transverse hydraulic support and the longitudinal hydraulic support actively supports the exposed top plate in time, the timely and effective support is realized, and personnel can work under the supported top plate to protect the personnel and equipment.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (12)
1. The utility model provides a colliery is combined and is adopted special hydraulic support group of working face hydraulic support withdrawal which characterized in that, the support group is including horizontal hydraulic support (1) and vertical hydraulic support (2), horizontal hydraulic support (1) set up perpendicularly in the front end of vertical hydraulic support (2), horizontal hydraulic support (1) with be equipped with between vertical hydraulic support (2) and be used for following horizontal extensible member (3) that vertical hydraulic support (2) length direction shifted each other, the one end of horizontal extensible member (3) with horizontal hydraulic support (1) is connected, its other end with vertical hydraulic support (2) are connected.
2. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support according to claim 1, wherein the transverse hydraulic support (1) comprises a top beam I (11), a base I (12) and a telescopic support column I (13) arranged between the top beam I (11) and the base I (12).
3. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support according to claim 2, wherein the rear end of the top beam I (11) is further hinged with a turnover tail beam (16), and the turnover tail beam (16) is connected with the base I (12) through the telescopic support column I (13).
4. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support is characterized in that one side, far away from the longitudinal hydraulic support (2), of the top beam I (11) is hinged with at least one overturning side beam I (14), the lower side face of the overturning side beam I (14) is hinged with one end of one or more overturning jacks I (15), and the other end of the overturning jack I (15) is hinged with the top beam I (11).
5. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support is characterized in that a plurality of overturning side beams I (14) can be arranged along the length direction of one side of the transverse hydraulic support (1), and each overturning side beam I (14) is controlled to be retracted through the corresponding overturning jack I (15).
6. The hydraulic support group special for withdrawing a coal mine fully-mechanized mining face hydraulic support according to any one of claims 1 to 5, wherein the longitudinal hydraulic support (2) comprises a first longitudinal hydraulic support (21) and a second longitudinal hydraulic support (22) which are arranged in parallel and respectively comprise a top beam II (2a), a base II (2b), a telescopic supporting column II (2c) and a shield beam II (2 d); the telescopic support column II (2c) is arranged between the top beam II (2a) and the base II (2 b); horizontal extensible member (3) are the flexible subassembly of hydraulic pressure, its level set up in the middle of base II (2b), the front end shaping of horizontal extensible member (3) has fixed orifices (31), the side of base I (12) is equipped with hangers (121), hangers (121) with through the round pin hub connection between fixed orifices (31).
7. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support according to claim 6, wherein the first longitudinal hydraulic support (21) is arranged on the side of the turnover tail beam (16) of the top beam I (11) (the side of an old pond), the first longitudinal hydraulic support (21) is provided with a side cantilever beam (211) on the side close to the old pond, one side of the side cantilever beam (211) is hinged to the top beam II (2a), the lower side surface of the side cantilever beam (211) is hinged to one end of one or more turnover jacks II (212), and the other end of the turnover jack II (212) is hinged to the top beam II (2 a).
8. The hydraulic support group special for withdrawing hydraulic supports of a coal mine fully mechanized mining face according to claim 7, wherein at least one second longitudinal hydraulic support (22) is provided, the second longitudinal hydraulic support (22) and the first longitudinal hydraulic support (21) are arranged in parallel, and a side adjusting device (221) capable of adjusting the distance between adjacent supports is provided on the side of each second longitudinal hydraulic support (22).
9. The hydraulic support group special for withdrawing a coal mine fully mechanized mining face hydraulic support according to claim 8, wherein the longitudinal hydraulic support (2) is connected with a base I (12) which is arranged right in front of the longitudinal hydraulic support and corresponds to the transverse hydraulic support (1) through the horizontal telescopic piece (3), and the supporting heights of the transverse hydraulic support (1) and the longitudinal hydraulic support (2) are the same.
10. A method of retracting a hydraulic mount set, the method comprising the steps of:
step 1, respectively hinging two ends of a horizontal telescopic piece on bases of a transverse hydraulic support and a longitudinal hydraulic support;
step 2, controlling the top beam of the to-be-removed bracket close to the transverse hydraulic bracket to descend, so that the to-be-removed bracket is separated from supporting the top plate, and driving the to-be-removed bracket to move forwards out of the original supporting position;
step 3, controlling the top beam I of the transverse hydraulic support to descend, separating from supporting the top plate, controlling the horizontal telescopic piece to extend out along the length direction of the longitudinal hydraulic support, enabling the horizontal telescopic piece to push the transverse hydraulic support to move towards the direction of the support to be removed, driving the transverse hydraulic support to move for a certain distance, and enabling the top beam I to rise to support the top plate again;
step 4, controlling the top beam II of the longitudinal hydraulic support to descend, separating from supporting the top plate, controlling the horizontal telescopic piece to contract along the length direction of the longitudinal hydraulic support, enabling the horizontal telescopic piece to pull the longitudinal hydraulic support to move towards the direction of the support to be removed, driving the longitudinal hydraulic support to move for a certain distance, and enabling the top beam II to rise to support the top plate again;
and 5, sequentially and repeatedly executing the step 3 and the step 4 until the transverse hydraulic support is moved to the support position of the removed support.
11. The method for withdrawing a hydraulic support group as claimed in claim 10, wherein a plurality of longitudinal hydraulic supports are arranged in parallel in step 1, each longitudinal hydraulic support is connected with a transverse hydraulic support right in front of the longitudinal hydraulic support through a horizontal telescopic member, and after step 3 is executed, each longitudinal hydraulic support is pulled to move towards the direction of the support to be withdrawn in sequence according to step 4 until all the longitudinal hydraulic supports are displaced.
12. The hydraulic support group withdrawing method as claimed in claim 10, wherein a plurality of turning side beams I are hinged on the top beam I of the transverse hydraulic support, and when the support to be withdrawn is gradually moved forwards to make the space left behind enough to be located at the rear one of the turning side beams I completely opened in the execution of step 3, the turning side beams I are unfolded by driving the turning jacks I below the turning side beams I to partially support the empty top plate until the support to be withdrawn is completely moved out of the original supporting position, so that all the turning side beams I are sequentially unfolded from back to front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010891021.2A CN111852524A (en) | 2020-08-29 | 2020-08-29 | Hydraulic support group special for withdrawing coal mine fully-mechanized coal mining face hydraulic support and withdrawing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010891021.2A CN111852524A (en) | 2020-08-29 | 2020-08-29 | Hydraulic support group special for withdrawing coal mine fully-mechanized coal mining face hydraulic support and withdrawing method thereof |
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| CN111852524A true CN111852524A (en) | 2020-10-30 |
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|---|---|---|---|
| CN202010891021.2A Pending CN111852524A (en) | 2020-08-29 | 2020-08-29 | Hydraulic support group special for withdrawing coal mine fully-mechanized coal mining face hydraulic support and withdrawing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593985A (en) * | 2020-11-11 | 2021-04-02 | 兖州煤业股份有限公司 | Support withdrawing device |
| CN112761697A (en) * | 2020-12-31 | 2021-05-07 | 兖州煤业股份有限公司 | Hydraulic support withdrawing device and withdrawing method |
| CN112761696A (en) * | 2020-12-31 | 2021-05-07 | 中煤科工开采研究院有限公司 | Hydraulic support withdrawing device |
| CN112761698A (en) * | 2020-12-31 | 2021-05-07 | 中煤科工开采研究院有限公司 | Hydraulic support withdrawing device |
| CN112879063A (en) * | 2021-01-25 | 2021-06-01 | 王新民 | Method for safely and quickly withdrawing hydraulic support of fully mechanized coal mining face |
-
2020
- 2020-08-29 CN CN202010891021.2A patent/CN111852524A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593985A (en) * | 2020-11-11 | 2021-04-02 | 兖州煤业股份有限公司 | Support withdrawing device |
| CN112761697A (en) * | 2020-12-31 | 2021-05-07 | 兖州煤业股份有限公司 | Hydraulic support withdrawing device and withdrawing method |
| CN112761696A (en) * | 2020-12-31 | 2021-05-07 | 中煤科工开采研究院有限公司 | Hydraulic support withdrawing device |
| CN112761698A (en) * | 2020-12-31 | 2021-05-07 | 中煤科工开采研究院有限公司 | Hydraulic support withdrawing device |
| CN112879063A (en) * | 2021-01-25 | 2021-06-01 | 王新民 | Method for safely and quickly withdrawing hydraulic support of fully mechanized coal mining face |
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