CN2934574Y - Comprehensive mechanical work face hydraulic prop retreating device - Google Patents
Comprehensive mechanical work face hydraulic prop retreating device Download PDFInfo
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- CN2934574Y CN2934574Y CN 200620086955 CN200620086955U CN2934574Y CN 2934574 Y CN2934574 Y CN 2934574Y CN 200620086955 CN200620086955 CN 200620086955 CN 200620086955 U CN200620086955 U CN 200620086955U CN 2934574 Y CN2934574 Y CN 2934574Y
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Abstract
A fully mechanized mining face hydraulic stent removing device used for fully mechanized mining and fully mechanized caving of coal mine consists of a pull-shift beam (1), a lapse bar (2), a pull-shift chain (3), a pull-shift longitudinal beam (5), a push-pull rod (6), etc. The pull-shift beam (1) and the pull-shift longitudinal beam (5) can be used independently or connected into L-shaped. The pull-shift beam has three or three pairs of connecting blocks, the first connecting block hinges an advancing jack of the removed stent through a pull-shift chain and the remaining two connecting blocks hinge the advancing jacks of the two neighboring stents of the removed stent (4) through the two push-pull rods. The pull-shift longitudinal beam has at least three pin holes, hinges an advancing jack of a first shield (A) and the two push-pull rods with the insertion of pin and hinges an advancing jack of the other two shields (B,C) through the two push-pull rods, extending pull-shifting distance. The device pulls and shifts the stent with the pull-shift device of the hydraulic stent, which means the pumping station of the face is used as the power, replacing winch and pulley, to complete the majority of stent removal procedure, greatly reducing hidden danger of broken rope and heavy manual work and increasing work efficiency.
Description
Technical field
The utility model relates to coal mine fully-mechanized mining or the fully mechanized coal face hydraulic support is removed device, particularly a kind of move to remove to combine with shielding farad adopt or the fully-mechanized mining working surface hydraulic support of fully mechanized coal face hydraulic support is removed device.Or claim the support pulling and moving equipment, draw and move beam.
Background technology
At present, combine and to adopt or the fully mechanized coal face hydraulic support is removed, adopt shielding to remove mode mostly, promptly the method that replaces lifting the canopy supporting with shield is safeguarded and is evacuated a top board.This method is safeguarding that the reliable degree aspect the top board has had large increase, is therefore extensively promoted the use of.But the method that all adopts winch to add directive wheel with the reach of shield support of pulling out by removing supporters is drawn, because weight support frame is big, roof pressure is big, the power of trying to stop people from fighting each other is very big, runs into condition at need, often breaks the phenomenon of winch cable, therefore, draw when moving at each support, the scope that all staff on board must hide and may involve from ropeway and wire cable rupture, safety hazard is bigger; Simultaneously, drawing work such as moving wire rope, extension pulley is heavy physical labour, and it is big to consume one's strength, and efficient is low; In addition, personnel dodge, install, move winch etc. and also delay a lot of working times.
Summary of the invention
Adopt or fully mechanized coal face carries out hydraulic support with the dilatory method of winch cable and removes dangerous big, big, time-consuming, the inefficient deficiency of physical demands in order to overcome existing combining, the utility model provides a kind of fully-mechanized mining working surface hydraulic support to remove device, it finishes most of operation that hydraulic support is removed in order to substitute winch, significantly reduce the potential safety hazard that winch draws contingent wire cable rupture when moving support, significantly reduce and manually draw heavy manual labors such as moving wire rope, extension pulley, increase work efficiency.
The technical scheme that its technical problem that solves the utility model adopts is:
Fully-mechanized mining working surface hydraulic support remove device mainly move crossbeam, pusher rod by drawing, draw move chain, draw move longeron, pull bar is formed.
1. draw and move crossbeam and be parallel to the working face wall direction, the width of length 〉=3 hydraulic support has three connection seats on it, and the spacing of each connection seat is the frame distance of hydraulic support.
2. first connection seat, promptly move the nearest connection seat of longeron apart from drawing, by horizontal bearing pin with draw an end that moves chain hinged, draw the other end that moves chain that end of the chain gusset piece is arranged, on the end of the chain gusset piece pin-and-hole is arranged, original bearing pin and first passing jack push rod by removing supporters are hinged for inserting.
3. second connection seat is hinged by an end of the horizontal bearing pin and first pusher rod; The other end of this pusher rod has pin-and-hole, and is for inserting the original bearing pin of support, hinged with the push rod of being passed jack by first adjacent stent of removing supporters.
4. the 3rd connection seat is hinged by an end of the horizontal bearing pin and second pusher rod; The other end of this pusher rod has pin-and-hole, for inserting the original bearing pin of support, with hinged by the passing jack push rod of second adjacent stent of removing supporters.
5. draw and move longeron perpendicular to the working face wall direction, the width of length 〉=2.5 support has the hinged pin-and-hole of using more than 3 on it; Wherein two pin-and-holes are inserted with bearing pin, and are hinged with two pull bars respectively, also have a pin-and-hole for inserting the original bearing pin of support, hinged with the passing jack push rod of first shield support.
6. first pull bar, promptly near of working face wall, except an end with draw move longeron hinged, the other end has pin-and-hole, and is hinged with the push rod of second shield support passing jack for inserting bearing pin.
7. second pull bar, except an end with draw move longeron hinged, the other end has pin-and-hole, and is hinged with the push rod of the 3rd shield support passing jack for inserting bearing pin.
8. draw and move crossbeam, draw and move that longeron is separately independent separately to be used, perhaps, draw and move crossbeam near drawing the end that moves longeron to move longeron and be connected into L shaped integral body near an end of working face wall and draw and move beam with drawing.
The technical scheme that its technical problem that solves the utility model adopts can also be:
It is three pairs that fully-mechanized mining working surface hydraulic support is removed the connection seat that drawing of device move on the crossbeam, and every pair fixing side by side.It draws the cross section of moving longeron is opening to the channel steel shape of a side, promptly be " Contraband " shape; Upper and lower side plate is arranged the vertical pin-and-hole of a row along its length, and the spacing of vertical pin-and-hole is 150 ± 20mm, equidistantly arranges.Draw the cross section of moving crossbeam to be the channel steel shape that makes progress of opening, promptly to be " Qian " shape.The length of pull bar with make shield support pass jack once to draw and move the 1500mm step pitch and adapt, be 1000 ± 200mm.
The beneficial effects of the utility model are:
1. this device utilizes the push unit of hydraulic support self to draw and moves support, replace winch to finish and draw most of operation of moving support, greatly reduce rope traction and may bring disconnected potential safety hazard of restricting, significantly reduce artificial drag rope, hung pulley, frequently moved the time and the workload of winch, alleviate workman's manual labor, improved work efficiency.Make hydraulic support remove job safety, simple, effective, reliable.
2. utilize the push unit of hydraulic support self to draw and move support, promptly utilize to combine the pumping plant of the adopting fully mechanized coal face source that is used as power, power resources are convenient, solved hydraulic support and Ben La effectively and moved beam and remove moving certainly of device, realized combining and adopted the mechanized that the fully mechanized coal face hydraulic support is removed part work.
Description of drawings
Accompanying drawing is the structural representation that this fully-mechanized mining working surface hydraulic support is removed device.
Among the figure: 1-draws and moves crossbeam, 2-pusher rod, 3-and draw and move chain, 4-and drawn by removing supporters, 5-and move longeron, 6-pull bar, 7-shield support, 8-connection seat.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment 1:
Accompanying drawing illustrates the structure that the utility model fully-mechanized mining working surface hydraulic support is removed device.Mainly move crossbeam 1, pusher rod 2 by drawing, draw move chain 3, draw move longeron 5, pull bar 6 is formed.Concrete structure is:
1. draw and move crossbeam 1 and be parallel to the working face wall direction and settle the width of length 〉=3 hydraulic support.Drawing the cross section of moving crossbeam 1 is the channel steel shape that makes progress of opening, i.e. " Qian " shape.Be fixed with three pairs of connection seats 8 on it, every pair fixing side by side, and each is corresponding with the frame distance of hydraulic support to the corresponding spacing of connection seat 8.
Draw the effect that moves crossbeam 1: be what to connect by removing supporters 4 and adjacent stent 4 thereof, and be fulcrum, finish by drawing of removing supporters 4 and move with adjacent stent 4.
2. in the first pair of connection seat 8, by horizontal bearing pin with draw that to move chain 3 one ends hinged, draw and move chain 3 other ends end of the chain gusset piece is arranged, vertical pin-and-hole is arranged on the end of the chain gusset piece, insert the support original pin shaft, with first by removing supporters 4, be that the passing jack push rod of 1# frame is hinged, and then be connected by removing supporters 1# frame.The first pair of connection seat promptly moves nearest a pair of of longeron 5 apart from drawing.
Draw the effect that moves chain 3: the stroke that former support is passed jack has only about 800mm, draws the length of dividing a word with a hyphen at the end of a line journey and being convenient to regulate long joining section in order to increase.Employing is flexible coupling and has the characteristics of Fast Installation and adjusting, can utilize the former passing jack of support easily, finishes by drawing of removing supporters move one's steps distance and tuning requirement.
3. in the second pair of connection seat 8, end by the horizontal bearing pin and first pusher rod 2 is hinged, the other end of this pusher rod 2 has vertical pin-and-hole, insert the support original pin shaft, with by the adjacent stent of removing supporters 4, be that the push rod of passing jack of 2# frame is hinged, and then be connected by removing supporters 2# frame.
4. in the 3rd pair of connection seat 8, end by the horizontal bearing pin and second pusher rod 2 is hinged, the other end of this pusher rod 2 has vertical pin-and-hole, insert the original bearing pin of support, with by second adjacent stent of removing supporters 4, be that the passing jack push rod of 3# frame is hinged, and then be connected by removing supporters 3# frame.
The effect of two pusher rod 2: utilize adjacent stent, be the effect that 2# and 3# frame are passed hydraulic lock in the jack hydraulic loop, make and pass not flexible of jack, will draw through pusher rod 2 and move crossbeam 1 locking position.Simultaneously, behind the connecting link pin of pulling down with support, two pusher rod 2 can rotate around the horizontal bearing pin of the second and the 3rd connection seat 90 ° upright near ribs, for being got out of the way return channel by removing supporters 4.
5. draw and move longeron 5 perpendicular to the working face wall direction, the width of length 〉=2.5 support, its cross section is opening to the channel steel shape of a side, promptly is " Contraband " shape.It is made of epipleural, lower side panel and middle junction plate thereof, promptly is welded with three rectangular steel plates.Upper and lower side plate protracts, and visits behind the junction plate, forms the channel steel shape section through fillet welding, and the thickness of junction plate adapts with the articulated joint of passing the jack push rod and the thickness of pull bar 6 hinged ends.Draw the upper and lower side plate that moves longeron 5 to arrange the vertical pin-and-hole of a row along its length, the pin-and-hole spacing is 150mm, equidistantly arranges.These vertical pin-and-holes insert bearing pin, with first shield support 7, be passing jack push rod and two pull bar 6 hinged usefulness of A frame.
Draw the effect that moves longeron 5: move shield support 7 in order to draw; Simultaneously, draw to move longeron 5 and draw and move crossbeam 1 and be connected into an integral body, constitute the support pulling and moving equipment; And utilize shield support to pass the support pulling and moving equipment, realize moving certainly of entire bracket pulling and moving equipment.
6. first pull bar 6, promptly near of working face wall, except an end with draw move longeron 5 hinged, its other end has vertical pin-and-hole, inserts vertical bearing pin, with second shield support 7, be that the passing jack push rod of B frame is hinged, and then be connected with shield support B frame.
7. second pull bar 6, except an end with draw move longeron 5 hinged, its other end has vertical pin-and-hole, inserts vertical bearing pin, with the 3rd shield support 7, be that the push rod of passing jack of C frame is hinged, and then is connected with shield support C frame.
The effect of two pull bars 6:, realize once drawing the requirement that moves the 1500mm step pitch with the stroke lengthening of shield support 7 former push units.
The length of pull bar 6 is relevant with support frame type, desires to make the passing jack of support to realize once drawing the requirement that moves the 1500mm step pitch, generally selects about 1000mm.As: the ZFP6200 support selects 1000mm.
8. draw move crossbeam 1 near draw the end that moves longeron 5, promptly near an end of shield support 7, fix by bolt or bearing pin with drawing an end that moves longeron 5 close working face walls, the two vertically is connected into L shaped.
Embodiment 2:
This support is removed drawing of device and is moved crossbeam 1 and move longeron 5 and do not join together, separate separately and use with drawing.At this moment, except the passing that can not utilize shield support 7, realize the support pulling and moving equipment integral body from moving, the realization of all the other functions is basic identical.
Except such scheme, also can adopt following technical measures change:
1. draw the connection seat that moves crossbeam also can adopt three.
2. draw the spacing of moving vertical pin-and-hole on the longeron to select in 150 ± 20mm scope.
3. the length of pull bar can be selected in 1000 ± 200mm scope.
4. draw and move crossbeam, draw and move the shaped steel girder steel that longeron also can adopt other section, draw and move longeron and also can adopt the shaped steel girder steel to add the form of hinged seat.
Operating principle:
It is on shielding dismounting method basis that this support is removed device, a kind of new equipment that moves by removing supporters and shield support that draws of release.Be characterized in: the thrust gear that utilizes hydraulic support self, the stroke that comprises lengthening transformation shield support thrust gear, by drawing Beam shifter to realize support and drawing moving certainly of Beam shifter, replace and to draw the most of operation or the step of moving support, and efficiently in the hope of the safety of removing frame work with winch and angle pulley.The utilization of this device is combined and is adopted or the pumping plant of the fully mechanized coal face source that is used as power, and power resources are convenient.
The utility model combine adopt or fully mechanized coal face to remove the concrete operations step of hydraulic support as follows:
1. preparation: cooperate by angle pulley, winch traction with face end, by wire rope with the 1st～3 hydraulic support of work plane extract out successively from former supporting position, tuning, with the parallel roof supporting of working face wall direction, as the shield support 7 of removing follow-up support, be A, B, C frame.
2. this hydraulic support is removed device and be placed in the work plane base plate by rib one side, make and draw that to move crossbeam 1 consistent with the working face wall direction.Draw and move crossbeam 1, draw and move longeron 5 and connect respectively with by removing supporters 1# frame, adjacent stent 2# and 3# frame, three shield supports 7.Specifically comprise:
A. will draw with the horizontal pin axle and move chain 3 and connected by the passing jack of removing supporters 1# frame;
B. with the horizontal pin axle with first pusher rod 2 with connected by the passing jack of the adjacent stent 2# frame of removing supporters;
C. with the horizontal pin axle with second pusher rod 2 with connected by the passing jack of the adjacent stent 3# frame of removing supporters;
D. will draw with vertical bearing pin and move longeron 5 and connect with the passing jack of first shield support A frame;
E. with vertical bearing pin the passing jack of first pull bar 6 with second shield support B frame connected;
F. with vertical bearing pin the passing jack of second pull bar 6 with the 3rd shield support C frame connected.
3. operate first and moved valve by falling of removing supporters 1# frame, by changing first connection seat 8 and drawing the connecting portion that moves chain 3, at twice with first by the removing supporters 1# frame rib that furthers.
A. for the first time, with drawing the total length of moving chain 3 to be connected in connection seat 8 and, utilizing the passing jack to be drawn and move a step pitch by removing supporters 1# frame by between the passing jack of removing supporters 1# frame;
B. for the second time, with drawing half of moving chain 3 to be connected in connection seat 8 and, will being drawn again by removing supporters 4 and move a step pitch by between the passing jack of removing supporters 1# frame.
4. pull down pusher rod 2, draw and move chain 3 and, pusher rod 2 is stood on rib for 90 ° around horizontal bearing pin rotation, for being abdicated return channel by removing supporters 1# frame by the connecting link pin of removing supporters 1# frame and adjacent stent 2# and 3# frame; With the winch traction of face end, will and pull out work plane by the tune of removing supporters 1# frame by wire rope, then to the entrucking of entrucking point.
5. operate falling of shield support 7 and move valve, begin to draw in proper order to move shield support 7 from goaf side.
A. for reducing the unsupported back span after support is removed, before drawing first the shield support A frame that moves the rib side, fall, utilize shield support A frame to carry out advance support by the front-axle beam of the adjacent stent 2# frame of removing supporters.
B. use the 3rd shield support C frame to the first a shield support A frame passing jack separately, sequentially draw and move shield support C frame, draw forward respectively and move a step pitch to the A frame.
6. operate the pushing and sliding valve of shield support 7, this support pulling and moving equipment is passed a step pitch forward along working face wall; Connect two pusher rod 2 and move chain 3, for the next one circulates, is to remove by the adjacent stent 2# frame of removing supporters and gets ready with drawing.And the like, progressively remove the residue support.
Claims (6)
1. a fully-mechanized mining working surface hydraulic support is removed device, it is characterized in that: comprise drawing and move crossbeam (1), pusher rod (2), draw and move chain (3), draw and move longeron (5), pull bar (6);
1. draw and move crossbeam (1) and be parallel to the working face wall direction, the width of length 〉=3 hydraulic support has three connection seats (8) on it, and the spacing of each connection seat is the frame distance of hydraulic support;
2. first connection seat (8), promptly move the nearest connection seat of longeron (5) apart from drawing, by horizontal bearing pin with draw that to move chain (3) one ends hinged, draw and move chain (3) other end end of the chain gusset piece is arranged, have on the end of the chain gusset piece for inserting original bearing pin and first by the pin-and-hole of the hinged usefulness of passing jack push rod of removing supporters (1#);
3. second connection seat (8) is hinged by an end of horizontal bearing pin and first pusher rod (2); This pusher rod (2) other end has for the original bearing pin of insertion support and by the pin-and-hole of the hinged usefulness of passing jack push rod of first adjacent stent (2#) of removing supporters (4);
4. the 3rd connection seat (8) is hinged by horizontal bearing pin and second pusher rod (2) one ends; The other end of this pusher rod (2) has for the original bearing pin of insertion support and by the pin-and-hole of the hinged usefulness of passing jack push rod of second adjacent stent (3#) of removing supporters (4);
5. draw and move longeron (5) perpendicular to the working face wall direction, the width of length 〉=2.5 support; Have 3 hinged pin-and-holes of using on it at least, wherein two pin-and-holes are hinged with two pull bars (6) respectively by bearing pin, also have one for the pin-and-hole that inserts the hinged usefulness of bearing pin and first shield support (A) passing jack push rod;
6. first pull bar (6), promptly near of working face wall, except an end with draw move longeron (5) hinged, the other end has for inserting the pin-and-hole of the original bearing pin of support with the hinged usefulness of push rod of second shield support (B) passing jack;
7. second pull bar (6), except an end with draw move longeron (5) hinged, the other end has for inserting the pin-and-hole of the original bearing pin of support with the hinged usefulness of push rod of the 3rd shield support (C) passing jack;
8. draw and move crossbeam (1), draw and move longeron (5) separately separately independently, perhaps, draw and move crossbeam (1) near drawing an end that moves longeron (5) to be connected into L shaped integral body with drawing an end that moves the close working face wall of longeron (5).
2. fully-mechanized mining working surface hydraulic support according to claim 1 is removed device, it is characterized in that: the said connection seat (8) that moves on the crossbeam that draws, every next door increases by one to be fixed side by side, is three pairs.
3. fully-mechanized mining working surface hydraulic support according to claim 1 is removed device, it is characterized in that: said to draw the cross section of moving longeron (5) be opening to the channel steel shape of a side, promptly be " Contraband " shape, and its upper and lower side plate is furnished with the vertical pin-and-hole of a row along its length.
4. fully-mechanized mining working surface hydraulic support according to claim 3 is removed device, it is characterized in that: the said vertical pin-and-hole that moves on the longeron (5) that draws, spacing is 150 ± 20mm, equidistantly arranges.
5. fully-mechanized mining working surface hydraulic support according to claim 1 is removed device, it is characterized in that: the said cross section of moving crossbeam (1) of drawing is the channel steel shape that makes progress of opening, promptly is " Qian " shape.
6. fully-mechanized mining working surface hydraulic support according to claim 1 is removed device, it is characterized in that: the length of said two pull bars (6) with make the passing jack of shield support (7) once draw the step pitch of moving 1500mm to adapt, be 1000 ± 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086955 CN2934574Y (en) | 2006-07-21 | 2006-07-21 | Comprehensive mechanical work face hydraulic prop retreating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620086955 CN2934574Y (en) | 2006-07-21 | 2006-07-21 | Comprehensive mechanical work face hydraulic prop retreating device |
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| Publication Number | Publication Date |
|---|---|
| CN2934574Y true CN2934574Y (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620086955 Expired - Fee Related CN2934574Y (en) | 2006-07-21 | 2006-07-21 | Comprehensive mechanical work face hydraulic prop retreating device |
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| CN (1) | CN2934574Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086769A (en) * | 2010-12-15 | 2011-06-08 | 中国神华能源股份有限公司 | Method for retracting hydraulic support by utilizing four shield supports |
| CN102444416A (en) * | 2011-12-24 | 2012-05-09 | 中国煤炭科工集团太原研究院 | Fully mechanized mining face hydraulic support beam-type retracting device |
| CN102817624A (en) * | 2012-08-22 | 2012-12-12 | 淮南矿业(集团)有限责任公司 | Hydraulic pressure supporting frame dismantling device |
| CN102828759A (en) * | 2012-08-31 | 2012-12-19 | 山东新煤机械装备股份有限公司 | Moving and support dismantling method for working faces of breaking roofs of mines |
| CN103410540A (en) * | 2013-07-27 | 2013-11-27 | 大同市恒熙科技有限公司 | Loader for hydraulic supports of fully-mechanized coal mining faces of coal mines |
| CN103527227A (en) * | 2013-10-18 | 2014-01-22 | 南京石诚井巷装备有限责任公司 | Method for withdrawing fully-mechanized coal mining hydraulic support |
| CN103939135A (en) * | 2014-05-07 | 2014-07-23 | 中国矿业大学 | Rapid construction method for support dismantling channel of fully mechanized coal mining face |
| CN105401966A (en) * | 2015-12-08 | 2016-03-16 | 永城煤电控股集团有限公司 | E-shaped pushing and grinding rack device for dismounting coal mine hydraulic bracket |
| CN105736044A (en) * | 2013-03-15 | 2016-07-06 | 中国矿业大学 | Rapid withdrawing method for fully mechanized coal mining face equipment of steep coal seam |
| CN105971653A (en) * | 2016-06-21 | 2016-09-28 | 淮南矿业(集团)有限责任公司 | Multi-shielding support long-step pitch hydraulic self-moving cross beam and retreating method of multiple shielding supports |
| CN107130990A (en) * | 2017-06-09 | 2017-09-05 | 淮南矿业(集团)有限责任公司 | A kind of large-mining-height working surface tears frame method open |
| CN108049897A (en) * | 2017-12-05 | 2018-05-18 | 淮南矿业(集团)有限责任公司 | Construction technology is withdrawn from the fully-mechanized mining working for moving crossbeam and move certainly crossbeam using this |
| CN112412513A (en) * | 2020-11-11 | 2021-02-26 | 天地科技股份有限公司 | Support withdrawing device |
| CN112412514A (en) * | 2020-11-11 | 2021-02-26 | 天地科技股份有限公司 | Support withdrawing device |
| WO2021093122A1 (en) * | 2019-11-15 | 2021-05-20 | 山东科技大学 | Method for reducing withdrawal roadway roof pressure at end of coal face mining |
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2006
- 2006-07-21 CN CN 200620086955 patent/CN2934574Y/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086769B (en) * | 2010-12-15 | 2012-09-05 | 中国神华能源股份有限公司 | Method for retracting hydraulic support by utilizing four shield supports |
| CN102086769A (en) * | 2010-12-15 | 2011-06-08 | 中国神华能源股份有限公司 | Method for retracting hydraulic support by utilizing four shield supports |
| CN102444416A (en) * | 2011-12-24 | 2012-05-09 | 中国煤炭科工集团太原研究院 | Fully mechanized mining face hydraulic support beam-type retracting device |
| CN102444416B (en) * | 2011-12-24 | 2014-07-16 | 中国煤炭科工集团太原研究院 | Fully mechanized mining face hydraulic support beam-type retracting device |
| CN102817624A (en) * | 2012-08-22 | 2012-12-12 | 淮南矿业(集团)有限责任公司 | Hydraulic pressure supporting frame dismantling device |
| CN102828759B (en) * | 2012-08-31 | 2014-11-26 | 山东新煤机械装备股份有限公司 | Moving and support dismantling method for working faces of breaking roofs of mines |
| CN102828759A (en) * | 2012-08-31 | 2012-12-19 | 山东新煤机械装备股份有限公司 | Moving and support dismantling method for working faces of breaking roofs of mines |
| CN105736044A (en) * | 2013-03-15 | 2016-07-06 | 中国矿业大学 | Rapid withdrawing method for fully mechanized coal mining face equipment of steep coal seam |
| CN103410540B (en) * | 2013-07-27 | 2015-07-08 | 大同市恒熙科技有限公司 | Loader for hydraulic supports of fully-mechanized coal mining faces of coal mines |
| CN103410540A (en) * | 2013-07-27 | 2013-11-27 | 大同市恒熙科技有限公司 | Loader for hydraulic supports of fully-mechanized coal mining faces of coal mines |
| CN103527227A (en) * | 2013-10-18 | 2014-01-22 | 南京石诚井巷装备有限责任公司 | Method for withdrawing fully-mechanized coal mining hydraulic support |
| CN103527227B (en) * | 2013-10-18 | 2016-03-02 | 南京石诚井巷装备有限责任公司 | A kind of coal mine fully-mechanized mining hydraulic support withdraws from method |
| CN103939135A (en) * | 2014-05-07 | 2014-07-23 | 中国矿业大学 | Rapid construction method for support dismantling channel of fully mechanized coal mining face |
| CN103939135B (en) * | 2014-05-07 | 2016-03-02 | 中国矿业大学 | A kind of fully-mechanized mining working removes frame passage rapid constructing method |
| CN105401966A (en) * | 2015-12-08 | 2016-03-16 | 永城煤电控股集团有限公司 | E-shaped pushing and grinding rack device for dismounting coal mine hydraulic bracket |
| CN105971653A (en) * | 2016-06-21 | 2016-09-28 | 淮南矿业(集团)有限责任公司 | Multi-shielding support long-step pitch hydraulic self-moving cross beam and retreating method of multiple shielding supports |
| CN105971653B (en) * | 2016-06-21 | 2017-11-17 | 淮南矿业(集团)有限责任公司 | More long step pitch hydraulic pressure of shield support withdraw method from shifting crossbeam and more shield supports |
| CN107130990A (en) * | 2017-06-09 | 2017-09-05 | 淮南矿业(集团)有限责任公司 | A kind of large-mining-height working surface tears frame method open |
| CN108049897A (en) * | 2017-12-05 | 2018-05-18 | 淮南矿业(集团)有限责任公司 | Construction technology is withdrawn from the fully-mechanized mining working for moving crossbeam and move certainly crossbeam using this |
| WO2021093122A1 (en) * | 2019-11-15 | 2021-05-20 | 山东科技大学 | Method for reducing withdrawal roadway roof pressure at end of coal face mining |
| CN112412513A (en) * | 2020-11-11 | 2021-02-26 | 天地科技股份有限公司 | Support withdrawing device |
| CN112412514A (en) * | 2020-11-11 | 2021-02-26 | 天地科技股份有限公司 | Support withdrawing device |
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