CN213684188U - Hydraulic support for caving coal at end of lagging working face - Google Patents
Hydraulic support for caving coal at end of lagging working face Download PDFInfo
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- CN213684188U CN213684188U CN202022410384.8U CN202022410384U CN213684188U CN 213684188 U CN213684188 U CN 213684188U CN 202022410384 U CN202022410384 U CN 202022410384U CN 213684188 U CN213684188 U CN 213684188U
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Abstract
The utility model discloses a lag working face end caving coal hydraulic support, which comprises a split front frame and a split rear frame, wherein the front frame and the rear frame are connected through a pushing jack; a bottom protecting steel plate is arranged between the left base and the right base of the front frame; a telescopic front cantilever is arranged in the second top beam of the rear frame and comprises a frame structure and a front tip; the second top beam and the third top beam of the rear frame, the second base and the third base are hinged through pin shafts, and a detachable hydraulic support can be added; and a safety guard plate and a large-area waste rock blocking plate are arranged on the third base of the rear frame. The utility model discloses driving the in-process moving and can realizing driving roof temporary support, reducing and moving the empty roof area of driving the in-process, have the suppression pucking phenomenon, prevent that the support base from sinking and the coal-out contains the advantage that the cash rate is low.
Description
Technical Field
The utility model relates to a mine equipment technical field especially relates to a lag working face end caving coal hydraulic support.
Background
The end top coal caving hydraulic support is important equipment in the working face end top coal caving process, and has the functions of supporting an end top plate and end top coal caving. Because the end of the working face is positioned at the junction of the mining and transporting equipment, the equipment is densely arranged, the mine pressure is complicated under the action of various bearing pressures of end surrounding rocks, an end hydraulic support is required to be adopted for safety support, and the existing end hydraulic support has the problems of poor stability, poor safety protection facilities and difficult support moving; if the top plate coal remains, the goaf is easy to have safety problems such as spontaneous combustion of the coal remains and the like, so that end caving coal is needed, and under the condition that the end coal falls naturally, the hydraulic support of the end caving coal needs to lag other support arrangements on a working face due to the fact that the end is suspended to bear pressure lag; when the end of the lagging working face is used for caving the top coal, the situation that waste rocks accumulated on the side of the support close to the goaf fall into the reversed loader exists, and the problem of high waste rock content is caused. Therefore, under the background of solving the problems, an end caving coal hydraulic support which meets the requirements of effective end support and is adaptive to the end pressure incoming rule is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides the following technical solutions:
a hydraulic prop for caving coal at the end of a lagging working face comprises a split front prop and a split rear prop, wherein the front prop and the rear prop are connected through a pushing jack; a telescopic front cantilever is arranged in the second top beam of the rear frame and comprises a frame structure and a front tip; and the second top beam, the third top beam, the second base and the third base are hinged through a pin shaft, and a detachable hydraulic support can be added.
And a bottom protection steel plate is arranged between the left base and the right base of the front frame, and a fixed steel column is arranged on the bottom protection steel plate.
The detachable hydraulic support comprises a fourth top beam, a fourth hydraulic prop and a fourth base, the fourth top beam is hinged to the second top beam and the third top beam, and the fourth base is hinged to the second base and the third base.
A hydraulic operating platform is arranged on the outer side of a second hydraulic support of the rear frame, which is close to the roadway side, a safety guard plate is arranged between the hydraulic operating platform and the roadway side, and the safety guard plate is perpendicular to and rigidly connected with the second base; the top beams of the front frame and the rear frame are hinged with the side guard plates through pin shafts, side guard plate jacks are arranged, and side telescopic beams are arranged in the side guard plates; and a large-area waste rock blocking plate is arranged on the side, close to the goaf, of the rear frame, and the large-area waste rock blocking plate is perpendicular to and rigidly connected with the third base.
The utility model has the advantages that:
1. the utility model is used for the regional roof of working face end is strutted and the end caving coal moves along with the propulsion of working face, moves a in-process, and the front truck after-frame removes in proper order, and the removal of the telescopic forestope cooperation front truck after-frame in the after-frame is stretched out and is withdrawed, can realize moving a temporary support of in-process to the sky top region, provides safety protection for moving the anchor operation personnel.
2. The utility model discloses a connect through protecting end steel sheet between two bases of front truck, increased the area of contact of base with the bottom plate, restrained the pucking phenomenon, solved the base and sink and lead to moving the problem of a difficulty.
3. The utility model discloses an end lag caving coal technology, the front truck position keeps parallel with other supports of working face, and the after-frame is tightly arranged to the collecting space area direction along with the front truck, and the after-frame can come to press the characteristic according to the end roof and add detachable hydraulic support, makes it accord with the end roof and come to press the law, and the loose breakage of back truck coal outlet department top coal emits the nature of putting high, has improved the coal rate of recovery.
4. The hydraulic operating platform of the utility model is arranged outside the second hydraulic prop close to the roadway side, and a safety guard plate is arranged between the hydraulic operating platform and the roadway side, so that the coal breakage at the junction of the scraper conveyor and the reversed loader can be prevented from splashing, and the safety of operators is threatened; the third base of the rear frame, which is close to one side of the goaf, is provided with a large-area waste rock blocking plate, so that waste rocks accumulated in the goaf can be prevented from falling into the reversed loader, and the waste rock content is reduced.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
fig. 2 is a schematic top view of the structure of the present invention;
FIG. 3 is a cross-sectional view of FIG. 1A-A;
fig. 4 is a front schematic view of a detachable hydraulic mount structure.
In the figure: 1-a first top beam, 2-a first base, 3-a first hydraulic prop, 4-a middle platform, 5-a connecting rod, 6-a connecting beam, 7-a front tip, 8-a frame structure, 9-a telescopic forepoling beam, 10-a telescopic forepoling beam jack, 11-a second top beam, 12-a third top beam, 13-a shield beam jack, 14-a shield beam, 15-a tail beam jack, 16-a tail beam, 17-a second hydraulic prop, 18-a hydraulic operation platform, 19-a third hydraulic prop, 20-a large-area waste rock blocking plate, 21-a moving frame jack, 22-a second base, 23-a third base, 24-a side guard plate, 25-a side telescopic beam, 26-a side guard plate jack, 27-a bottom guard steel plate, 28-fixed steel column, 29-safety guard plate, 30-fourth top beam, 31-fourth hydraulic prop and 32-fourth base.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, but do not constitute any limitation to the present invention.
The utility model relates to an end caving coal hydraulic support is shown in fig. 1-4, including split type fore-stock and after-frame, the fore-stock position keeps parallel with other supports of working face, the after-frame is closely arranged to the collecting space area direction along with the fore-stock.
The front frame comprises a first top beam 1 and a first base 2. A first hydraulic prop 3 and a four-bar linkage structure are arranged between the first top beam 1 and the first base 2, the four-bar linkage structure consists of a middle platform 4 of the front frame, two connecting bars 5 and a connecting beam 6, the middle platform 4 is rigidly connected with the left and right bases of the front frame, and the end part of the connecting beam 6 extends upwards and is hinged with the middle part of the first top beam 1 through a connecting pin shaft, so that the stability and the supporting strength of the support are ensured; the left base and the right base of the front frame are connected through the bottom protection steel plate 27, so that the contact surface between the front frame and the bottom plate is increased, the bottom bulging phenomenon is inhibited, the problem that the frame is difficult to move due to sinking of the bases is solved, and meanwhile, the protection effect on the reversed loader is achieved; the bottom protecting steel plate 27 is provided with a fixed steel column 28 which plays a role in fixing the reversed loader and realizes the synchronous movement of the reversed loader and the hydraulic support; the first top beam 1 is hinged with a side guard plate 24 through a pin shaft and is provided with a side guard plate jack 26, a side telescopic beam 25 is arranged in the side guard plate 24, the side telescopic beam 25 extends out of the side guard plate 24 and the side telescopic beam 25 on the goaf side, supporting of a top plate is achieved, the side guard plate 24 and the side telescopic beam 25 on the roadway side extend out of the side guard plate 24 and the side telescopic beam 25 on the roadway side, supporting of the top plate is achieved, and meanwhile, the phenomenon that fallen coal and gangue on the top plate cause injury to workers is prevented.
The rear frame comprises a telescopic forepoling bar 9, a second top bar 11, a third top bar 12, a shield bar 14, a tail bar 16, a second base 22 and a third base 23. A second hydraulic prop 17 is arranged between the second top beam 11 and the second base 22, and a third hydraulic prop 19 is arranged between the third top beam 12 and the third base 23; the second top beam 11 and the third top beam 12 are provided with a side guard plate 24, a side telescopic beam 25 and a side guard plate jack 26 which have the same structural function as the first top beam 1; the telescopic front canopy 9 consists of a front tip 7 and a frame structure 8, and is provided with a telescopic front canopy jack 10, and the telescopic front canopy 9 can extend out when the front frame moves to temporarily support the roof plate so as to provide safety protection for anchor withdrawal operators; the second top beam 11, the third top beam 12, the shield beam 14 and the tail beam 16 are sequentially hinged, a shield beam jack 13 is arranged between the shield beam 14 and the third top beam 12, and a tail beam jack 15 is arranged between the tail beam 16 and the shield beam 14, so that the tail beam 16 can be stably supported when top coal is put at the end; the rear frame is connected with the front frame through a frame moving jack 21, so that the front frame and the rear frame can move in a split mode; a hydraulic operating platform 18 is arranged on the outer side of a second hydraulic support 17 of the rear frame, which is close to the roadway side, a safety guard plate 29 is arranged between the hydraulic operating platform 18 and the roadway side, and the safety guard plate 29 is perpendicular to and rigidly connected with a second base 22, so that the safety of operators can be prevented from being threatened by the splashing of coal at the junction of the scraper conveyor and the reversed loader; one side of the rear frame, which is close to the goaf, is provided with a large-area waste rock blocking plate 20, the large-area waste rock blocking plate 20 is perpendicular to and rigidly connected with a third base 23, waste rocks collapsing in the goaf can be prevented from falling into a reversed loader, and the waste rock content is reduced; second back timber 11 and third back timber 12, it is articulated through the round pin axle between second base 22 and the third base 23, can add detachable hydraulic support according to end top coal caving in nature and end roof coming pressure characteristic, make it accord with end roof coming pressure law, the loose broken caving in nature of roof coal of back frame coal-putting mouth department is high, the coal rate of recovery has been improved, detachable hydraulic support includes fourth back timber 30, fourth hydraulic prop 31 and fourth base 32, concrete size can come according to the roof specifically to press the condition to customize, fourth back timber 30 and second back timber 11, third back timber 12 is articulated, fourth base 32 and second base 22, third base 23 is articulated
The utility model discloses a working process does:
the end hydraulic support is arranged at the intersection of a working face and a belt roadway, the front frame is parallel to other supports of the working face, the rear frame is arranged towards the goaf direction along with the front frame, the reversed loader is arranged at the center line between the left stand column and the right stand column of the support and is rigidly connected with the front frame through a fixed steel column 28 on a bottom protecting steel plate 27. After the coal cutter cuts coal, the front scraper conveyor is pushed, then the tail beam 16 is opened to discharge end top coal, and after the end top coal discharge is completed, the tail beam 16 is closed. Operating a hydraulic operating platform 18, lowering a first hydraulic prop 3 and a four-bar linkage structure of a front frame to separate a first top beam 1 from a top plate, realizing that the front frame and a reversed loader move forward to a roadway by one coal mining step distance by means of a frame moving jack 21 between the front frame and a rear frame, simultaneously extending a telescopic front canopy 9 arranged in a second top beam 11, observing the condition of the top plate in the extending process of the telescopic front canopy 9, carrying out anchor withdrawing operation of the top plate if the top plate is intact, and adjusting the first top beam 1 in time by using the first hydraulic prop 3 and the four-bar linkage structure of the front frame in order to prevent the support from being reversed and inclined in the moving process of the front frame; after the front frame walks a coal mining step distance, the first hydraulic prop 3 and the four-bar structure are lifted simultaneously, so that the front frame is propped in time. After the movement of the front frame and the anchor withdrawal operation of the top plate are completed, operating a hydraulic operation platform 18, lowering a second hydraulic prop 17 and a third hydraulic prop 19 of the rear frame to separate a second top beam 11 and a third top beam 12 of the rear frame from the top plate, enabling the rear frame to move forward a coal mining step distance towards a roadway through a frame moving jack 21 connected with a base of the front frame, simultaneously retracting a telescopic front cantilever 9 arranged in the second top beam 11, and timely adjusting the second hydraulic prop 17 and the third hydraulic prop 19 in the movement process of the rear frame to enable the second top beam 11 and the third top beam 12 not to be inclined; after the rear frame walks a coal mining step distance, the second hydraulic support 17 and the third hydraulic support 19 of the rear frame are lifted simultaneously, so that the rear frame is supported in time, and a cycle is completed.
The above, only do the utility model discloses the concrete implementation of preferred can also emit the nature of putting and the end roof comes to press the characteristic to add detachable hydraulic support according to the end top coal, the utility model discloses a protection scope is not limited to this, and any technical personnel familiar with this technical field are in the utility model discloses an in the technical scope who discloses, according to the utility model discloses a technical scheme and the utility model discloses think about the same replacement or change in addition, all should cover within the protection scope of the utility model.
Claims (4)
1. The utility model provides a lag working face end caving coal hydraulic support which characterized in that: the device comprises a split type front frame and a split type rear frame, wherein the front frame is connected with the rear frame through a pushing jack; a telescopic front cantilever is arranged in the second top beam of the rear frame and comprises a frame structure and a front tip; the second top beam of back frame and the third top beam of back frame, the second base of back frame and the third base of back frame are articulated through the round pin axle between, and detachable hydraulic support can be added.
2. The hydraulic lag face end caving coal support of claim 1, wherein: and a bottom protection steel plate is arranged between the left base and the right base of the front frame, and a fixed steel column is arranged on the bottom protection steel plate.
3. The hydraulic lag face end caving coal support of claim 1, wherein: the detachable hydraulic support comprises a fourth top beam, a fourth hydraulic prop and a fourth base, the fourth top beam is hinged to the second top beam and the third top beam, and the fourth base is hinged to the second base and the third base.
4. The hydraulic lag face end caving coal support of claim 1, wherein: a hydraulic operating platform is arranged on the outer side of a second hydraulic support of the rear frame, which is close to the roadway side, a safety guard plate is arranged between the hydraulic operating platform and the roadway side, and the safety guard plate is perpendicular to and rigidly connected with the second base; the top beams of the front frame and the rear frame are hinged with the side guard plates through pin shafts, side guard plate jacks are arranged, and side telescopic beams are arranged in the side guard plates; and a large-area waste rock blocking plate is arranged on the side, close to the goaf, of the rear frame, and the large-area waste rock blocking plate is perpendicular to and rigidly connected with the third base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022410384.8U CN213684188U (en) | 2020-10-27 | 2020-10-27 | Hydraulic support for caving coal at end of lagging working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022410384.8U CN213684188U (en) | 2020-10-27 | 2020-10-27 | Hydraulic support for caving coal at end of lagging working face |
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| Publication Number | Publication Date |
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| CN213684188U true CN213684188U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022410384.8U Active CN213684188U (en) | 2020-10-27 | 2020-10-27 | Hydraulic support for caving coal at end of lagging working face |
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|---|---|
| CN (1) | CN213684188U (en) |
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- 2020-10-27 CN CN202022410384.8U patent/CN213684188U/en active Active
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