CN1702300A - Arrangement for quickly shifting sublevel caving hydraulic support series for fully-mechanized mining of three-soft coal bed - Google Patents
Arrangement for quickly shifting sublevel caving hydraulic support series for fully-mechanized mining of three-soft coal bed Download PDFInfo
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- CN1702300A CN1702300A CN 200510017618 CN200510017618A CN1702300A CN 1702300 A CN1702300 A CN 1702300A CN 200510017618 CN200510017618 CN 200510017618 CN 200510017618 A CN200510017618 A CN 200510017618A CN 1702300 A CN1702300 A CN 1702300A
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Abstract
This invention discloses a rapid transiting device of fully-mechanized mining frame, which comprises some fully-mechanized mining frames, hydraulic stud set between chassis and top beam; the pulling hydraulic cylinder of the frame is hinged the gap bridge shoulder in the chassis, and the piston rod of the pulling hydraulic cylinder is hinged the chassis of transporter through ram; the extension bar is arranged in the top beam cavity, and outside two hydraulic studs of the top beam are fixed upper column nest, while in the chassis is arranged lower column nest; the upper column nest in one side of top beam hinges the cap shoulder which suspends the hydraulic cylinder through the cross connector, and the piston rod which suspends hydraulic cylinder inserts into front or rear column nest of the non-shift frame.
Description
One, technical field: the present invention relates to a kind of support moving device of bracing frame of coal cutting roadway, particularly relate to a kind of " three is soft " coal seam mining support series fast-moving bracket device.
Two, background technology: group 21 coal seams, dyas Shanxi of my group's exploitation, coal seam thickness 0～24m, average 6～8m, hardness factor f＜0.5 allows specific pressure 1.1～2.1Mpa, 3～25 ° at inclination angle, coal seam coefficient of variation R=70%, ocurrence of coal seam are extremely unstable.The top board fluctuations is big, and false roof thickness 0～1.5m mostly is the carbonaceous mud stone, direct top thickness degree 0～28.3m, and average thickness 7.3m is chiltern mud stone and arenaceous shale.Old top is quartz sandstone, average thickness 11.2m.Seat earth is an arenaceous shale, and average thickness 8m allows specific pressure 3.7～10.3Mpa, and the soft easy inbreak of coal body is Powdered more, meets water and becomes mud, is typical " three is soft " irregular coal seam.
The coal mining technology is brought into use the comprehensive exploitation of adopting from the eighties, the initial ZYZ support that uses, this support is two pillars, four connecting rod shield supports, this set cap is short, there is not expansion bracket, the space, machine road that exposes after can not the coal cutting of immediate support coal-winning machine, and can not play the active support effect to the wall caving roof fall in " three is soft " coal seam.Because the characteristics in " three is soft " coal seam are that top board is soft, base plate is also soft, the seam hardness coefficient only has 0.1～0.5, the coal seam fragmentation, sometimes the wall caving degree of depth reaches more than one meter dark, causing needs to drop into great amount of manpower and material resources behind the coal-winning machine cutting coal seam and carries out artificial supporting, to keep normally carrying out of mining and produce, if artificial supporting is untimely, just large-area roof fall might occur, landslide causes transporter, coal-winning machine to be crushed to death, drift section is blocked, needs to drop into great amount of manpower and material resources and fills in processing clearly.Analyze according to statistics, in coal work, the time of handling the wall caving roof fall accounts for 1/2nd of per tour effective time, has a strong impact on mechanical coal mining efficient.Because the coal mining fltting speed is slow, support is subjected to the pressure of top board for a long time, and it is serious to cause bracket base to fall into the end, when adding the soft or work plane of work plane base plate the end of with, fall into the end degree of depth sometimes and reach more than the 50-200mm, it is very big to move the frame resistance, move frame difficulty more, even move motionless support.Advancing velocity seriously restricts the raising of coal mining efficient, advancing velocity has influenced the fltting speed of coal-face slowly again, further aggravated the occurrence frequency of wall caving roof fall accident, cause vicious circle to coal-face, have only 2～30,000 tons/month when a machine exploiting field coal mining output is minimum, coal mining yields poorly, deficiency in economic performance, and labor strength is big.
My group company took the lead in having invented the top coal caving technology at home afterwards, had transformed support Design, had adopted the two portions of the support shield type transporter meta sublevel caving hydrau lic support that puts in a skylight.This support is an integral top beam, sets up the hydraulically extensible beam in back timber, makes empty top, energy immediate support machine road behind the coal-winning machine cutting coal seam, wall caving roof fall problem before efficiently solving.But bracket base falls into end problem and is not still solved at all, and it is big to move the frame resistance, and advancing velocity is slow.
Bracket base falls into the reason at the end by analysis has: (1) base plate is soft, and compressive strength is low; (2) the stressed point of resultant force position of bracket base is forward; (3) adopt and to move towards the longwell tiltedly exploitation of bowing and make the reach of support center of gravity.Owing to these reasons, make the hydraulic support ubiquity base front end of fully mechanized coal face fall into tens centimeters at the end, it is motionless to cause support to move.Through moving the frame calculation of resistance:
As the wide 110cm of base, the 5cm that sink is when three cherry coal body vertical shear are 400Mpa, then
(1) overcoming the resistance that falls into ground coal is F
1=P*A
1=220KN
(2) wiping the required supporting intensity of frictional resistance that overcomes top, base plate when frame is moved on the top is
Q=(h
1* r
1+ h
2* r
2) g=(5*1.3+6*2.1) * 9.81=1870Mpa, wherein h
1, h
2Be set cap top top coal thickness and direct top thickness degree, unit: m; r
1, r
2Be the density and the direct rimrock stone density of loose coal, unit: t/m
2, g is an acceleration of gravity.
Required working resistance: p=qA=1870*7.5=1402.5KN;
A=LB=5*7.5m wherein
2, L, B are respectively set cap length and support width, unit: m
Wipe the frictional resistance that overcomes when frame is moved on the top:
F
2=P* (f
1+ f
2)=1402.5* (0.3+0.3)=841.5KN, wherein f
1, f
2Be the friction factor of support and top, base plate,
The required drag overall that overcomes: F=F when moving frame
1+ F
2=220+841.5=1061.5KN
(3) pass the booster that moves that jack can provide:
P
Y＝πD
2/4*Pb*10
3＝3.14/4*0.16*0.16*25*1000＝502.4KN
As seen, pass that jack can provide to move booster less, move motionless support, in the past in this case, whenever moving one must be operated simultaneously by 2-3 workman, prop up back timber with monomer column, fall frame then, lift the base reach, move one and need 5-10 minute, monomer column easily slips and hurts sb.'s feelings, and labor strength is big, poor stability.
In disclosed patent documentation, a kind of full-automatic walking type hydraulic supports of ZL92212484.1, inventive features is to be equipped with on the short column cylinder pipe by back-moving spring with apart from the three way cock of stay cord control, passes the piston rod of oil cylinder and realizes being connected with frid by gradient governor motion universal coupling is housed; Invention ZL92102263.8 (declares utility model simultaneously, patent No. ZL92206029.0) disclosed a kind of half-discharge step-by-step hydraulic prop, by the lining beam, outer beam, preceding beam, compositions such as multi-functional combined oil cylinder and double acting hydraulic prop, in, Wai Liang and preceding beam respectively with the outer shell of multi-functional combined oil cylinder, inner casing and piston rod are hinged, in beam be loaded on Wai Liangzhong, multi-functional combined oil cylinder is loaded on Li Liangzhong, when moving frame Li Liang alternately take a step with outer beam and relative on, move down, eliminated empty top phenomenon, alleviated coal whereabouts, top problem, in four hydraulic vertical props connect respectively, outer beam is realized alternately taking a step simultaneously, can only be used in hard coal-face, looser top board work plane can't use in " three is soft " coal seam.
Three, summary of the invention:
Technical problem to be solved by this invention: the problem that " three is soft " coal seam, support fall into the end easily, move the frame inconvenience that is not suitable at the existing hydraulic support existence of background technology proposes a kind of frame " three is soft " coal seam mining support series fast-moving bracket device fast, easily that moves.
The technical solution used in the present invention: a kind of " three is soft " coal seam mining support series fast-moving bracket device, the mining support that contains some, each mining support contains back timber, caving shield, bracket base, pass oil cylinder, hinged each other, two hydraulic pressure front columns are installed between base and back timber side by side, near base and caving shield and back timber hinged place, two hydraulic pressure rear columns are installed side by side, preparation moves that to cross the bridge plate hangers on the end of passing cylinder block of mining support of frame and the base hinged, it is hinged by the base of push rod and transporter to pass the oil cylinder piston bar, the hydraulically extensible beam is installed in the back timber chamber, the outside at two hydraulic pressure front columns side by side of each mining set cap respectively is mounted with needling on, needling under before on the front and back position of front column and base hinged place base dual-side, respectively being provided with, the back is needling down, it is hinged that the last needling of back timber one side is lifted cylinder block termination, end hangers by cruciform joint and suspension, the piston rod that end oil cylinder is lifted in suspension injects in the front or rear needling down of the adjacent side of adjacent mining support that is not shifted, maybe lift the end during oil cylinder when the last needling that needs both sides connect to hang by cruciform joint separately simultaneously, then the side-by-side mounting piston rod of lifting end oil cylinder injects the preceding needling down of the adjacent separately adjacent side of mining support or back respectively down in the needling.
Described upward needling is bilateral hangers, one end is fixed on the back timber soffit, the other end is hinged by bearing pin and cruciform joint, the cylinder body one end hangers that the cruciform joint other end is lifted end oil cylinder by bearing pin and suspension is hinged, two bearing pins are orthogonal separated by a distance, cruciform joint two hangers joint profile approximate right angle are trapezoidal, and end face is an arc surface, and end oil cylinder is lifted in suspension can do the front, rear, left and right swing.
Passing the mounting means of oil cylinder in bracket base is directly-mounting type, and it is hinged that passing oil cylinder end hangers and base are crossed bridge plate, and its piston rod directly passes base cavity pocket and is hinged on the transporter base; Perhaps pass oil cylinder end hangers and base and cross the bridge plate flip-over type and install, reverse 180 ° to pass under the base cavity and transporter base hinged for its piston rod and push rod.
Be provided with in the middle of the caving shield that the back timber rear portion is articulated and connected and put the coal plate, the bottom and the bracket base of caving shield are articulated and connected.
Mining support by some is arranged side by side, is provided with side guard board in the back timber both sides of mining support.
End oil cylinder is lifted in each hydraulic vertical prop and passing oil cylinder and suspension, is respectively equipped with union and high-pressure oil pipe on its piston two ends cylinder body and connects hydraulic pump and fuel tank.
Positive beneficial effect of the present invention:
1, mining support fast-moving bracket device of the present invention, on the basis of original hydraulic support, adopt suspension type to promote the base oil cylinder, bracket base is mentioned more than the 100-200mm, removed bracket base and fallen into end base plate the resistance of base and bracket base frictional resistance to base plate, the base that has thoroughly solved the three-soft seam sublevel caving hydrau lic support falls into end problem, has strengthened the compliance of sublevel caving hydrau lic support to the seat earth fluctuations.
2, mining support fast-moving bracket device of the present invention, frame-shift time shortens to tens seconds by 5-10 minute of past, advancing velocity improves more than 20 times, realized comprehensive coal face high-yield and high-efficiency under the three soft condition of thick seam, give full play to the usefulness of mechanization, production efficiency improves greatly, makes monthly output by ten thousand tons of original 5-6, bring up to ten thousand tons of 10-19, directly work efficiency reaches more than the 20t/ worker; Combine and adopt per unit area yield by ten thousand tons of 50-60, rise to ten thousand tons of 130-190, per unit area yield tidemark under the similar condition of the wound whole nation three soft high seam minings increases substantially business economic benefit and coal miner's wage.
3, mining support fast-moving bracket device of the present invention has alleviated the heavy manual labor of workman greatly, has avoided the slip generation of casualty accident of monomer column, has guaranteed to produce efficient, safety.
Four, description of drawings:
Fig. 1: " three is soft " coal seam mining support series fast-moving bracket device is faced structural representation
Fig. 2: " three is soft " coal seam mining support series fast-moving bracket device side TV structure schematic diagram
Fig. 3: " three is soft " coal seam mining support series fast-moving bracket device is overlooked and is partly cutd open structural representation
Fig. 4: pass oil cylinder annexation and action principle schematic diagram
Fig. 5-1,5-2: be respectively cruciform joint and face and partly cut open and the side-looking structural representation
Fig. 6-1,6-2: be respectively down needling and analyse and observe and the plan structure schematic diagram
Five, the specific embodiment:
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5-1,5-2, Fig. 6-1,6-2, " three is soft " coal seam mining support series fast-moving bracket device is made of side by side the mining support (nearly 100～150) of some, and each mining support contains back timber 2 among the figure, caving shield 3, bracket base 5 is passed oil cylinder 8, is provided with in caving shield 3 centres that are articulated and connected with it with back timber 2 rear portions and puts coal plate 4, the bottom of caving shield 3 and bracket base 5 are articulated and connected, and two outsides of each mining set cap 2 are provided with side guard board 24; Two hydraulic pressure front columns 9 are installed between base 5 and back timber 2 side by side, near the hinged place of base 5 and caving shield 3 and back timber 2, two hydraulic pressure rear columns 7 are installed side by side, in back timber 2 cavitys, hydraulically extensible beam 1 is installed, the outside at the two hydraulic pressure front columns 9 in the both sides of each mining set cap 2 respectively is mounted with needling 21 on, last needling 21 is bilateral hangers, one end is fixed on back timber 2 soffits, the other end is hinged by bearing pin and cruciform joint 22, cruciform joint 22 structures such as Fig. 5-1, shown in the 5-2, cruciform joint two hangers joint profile approximate right angle are trapezoidal, and end face is an arc surface; It is hinged that cruciform joint 22 other ends are lifted end oil cylinder 10 cylinder body termination hangers by bearing pin and suspension, two bearing pins are orthogonal separated by a distance, the suspension that is connected with the last needling 21 of back timber one side is lifted end oil cylinder 10 and can all around be moved, on the front and back position of front column 9 and base 5 hinged place base dual-sides, respectively be provided with former and later two needlings 14 down, during displacement, the piston rod 25 that end oil cylinder 10 is lifted in suspension injects in the front or rear needling 14 down of the adjacent side of adjacent mining support that is not shifted.Following needling 14 structures are one section rectangular cylinder 16 shown in Fig. 6-1,6-2, and the upper end is provided with peripheral high, a low groove 15 in center, and rectangular cylinder is welded on the bracket base two side near the forward and backward both sides of hydraulic pressure front column.Certainly the needling structure also can be cylinder down, and perhaps cross section is the column body segment of trapezoidal grade.
Darker when the sunken end of bracket base, when needing the last needling of both sides to connect two suspensions simultaneously to lift end oil cylinder lifting bracket base, then the side-by-side mounting piston rod of lifting end oil cylinder is inserted in the preceding needling down of the adjacent separately adjacent side of mining support or back respectively down in the needling, not getting rid of on each mining set cap the hydraulic vertical prop both sides this moment installs two suspensions and lifts end oil cylinder, perhaps when needed, move past and use by manually a suspension on the adjacent stent being lifted end oil cylinder.
End oil cylinder is lifted in the hydraulic vertical prop of each mining support and passing oil cylinder and suspension, is respectively equipped with union and high-pressure pipeline on its piston two ends cylinder body and connects hydraulic drive mechanism, moves frame or lifting power to provide.Present embodiment passes oil cylinder end hangers and base is crossed the installation of bridge plate flip-over type, Fig. 4 is for passing oil cylinder annexation and action principle schematic diagram, it is hinged that the end of passing oil cylinder 8 cylinder bodies and base are crossed bridge plate hangers 19, and the piston rod 11 of passing oil cylinder 8 turns to 180 ° by push rod 18, and to pass under the base base of cavity and anterior transporter 12 hinged; Be respectively equipped with the hydraulic pump and the fuel tank of union and high-pressure pipeline 17 connection hydraulic drive mechanisms on the cylinder body at passing oil cylinder 8 piston two ends, piston is subjected to the force direction difference when applying oil pressure, be basic point or stress action spot with transporter and bracket base respectively, realize that successively the step pitch of transporter and hydraulic support moves.Among Fig. 1,6 is the rear portion transporter, and 13 is coal-winning machine.
Operating process of the present invention: move before the frame earlier and column cap is lifted under the piston rod of end oil cylinder in suspension stretched out and be fixed in the following needling that faces the frame base, to move the frame handgrip beats moving chord position and puts, frame falls then, hydraulic vertical prop epicoele feed liquor, because hinge is fixed and is being supported by the lift cylinder that stretches out on back timber and the column, hydraulic action makes the column cylinder body through upgrading certain altitude (50-100mm) on the hinge drive base down, remove bracket base (front end) and be absorbed in resistance that the coal seam produces and the frictional force between support and the base plate, the frictional force when passing oil cylinder and being enough to overcome remaining wiping top and moving frame realizes moving smoothly frame.Promptly utilizing design and installation to lift end oil cylinder (front and back or move left and right on demand) in the suspension of set cap both sides is supported in the following needling that faces frame base both sides, shrink by the bracket hydraulic column, the base front end is lifted, fall into the moving difficulty problem that causes at the end thereby solve the base front end.
Embodiment two: referring to Fig. 1, Fig. 2, present embodiment is substantially with embodiment one, the difference of itself and embodiment one is: passing the mounting means of oil cylinder 8 in bracket base 5 is directly-mounting type, passing oil cylinder 8 end hangers and base, to cross bridge plate hinged, and its piston rod directly passes on the base that base cavity pocket is hinged on transporter.
Claims (6)
1. " three is soft " coal seam mining support series fast-moving bracket device, the mining support that contains some, each mining support contains back timber, caving shield, bracket base, pass oil cylinder, hinged each other, two hydraulic pressure front columns are installed between base and back timber side by side, near base and caving shield and back timber hinged place, two hydraulic pressure rear columns are installed side by side, preparation moves that to cross the bridge plate hangers on the end of passing cylinder block of mining support of frame and the base hinged, it is hinged by the base of push rod and transporter to pass the oil cylinder piston bar, the hydraulically extensible beam is installed in the back timber chamber, it is characterized in that: the outside at two hydraulic pressure front columns side by side of each mining set cap respectively is mounted with needling on, needling under before on the front and back position of front column and base hinged place base dual-side, respectively being provided with, the back is needling down, it is hinged that the last needling of back timber one side is lifted cylinder block termination, end hangers by cruciform joint and suspension, the piston rod that end oil cylinder is lifted in suspension injects in the front or rear needling down of the adjacent side of adjacent mining support that is not shifted, maybe lift the end during oil cylinder when the last needling that needs both sides connect to hang by cruciform joint separately simultaneously, then the side-by-side mounting piston rod of lifting end oil cylinder injects the preceding needling down of the adjacent separately adjacent side of mining support or back respectively down in the needling.
2. mining support series fast-moving bracket device according to claim 1, it is characterized in that: described upward needling is bilateral hangers, one end is fixed on the back timber soffit, the other end is hinged by bearing pin and cruciform joint, the cylinder body one end hangers that the cruciform joint other end is lifted end oil cylinder by bearing pin and suspension is hinged, two bearing pins are orthogonal separated by a distance, cruciform joint two hangers joint profile approximate right angle are trapezoidal, end face is an arc surface, and end oil cylinder is lifted in suspension can do the front, rear, left and right swing.
3. mining support series fast-moving bracket device according to claim 1, it is characterized in that: passing the mounting means of oil cylinder in bracket base is directly-mounting type, it is hinged that passing oil cylinder end hangers and base are crossed bridge plate, and its piston rod directly passes base cavity pocket and is hinged on the transporter base; Perhaps pass oil cylinder end hangers and base and cross the bridge plate flip-over type and install, reverse 180 ° to pass under the base cavity and transporter base hinged for its piston rod and push rod.
4. mining support series fast-moving bracket device according to claim 1 and 2 is characterized in that: be provided with in the middle of the caving shield that the back timber rear portion is articulated and connected and put the coal plate, the bottom and the bracket base of caving shield are articulated and connected.
5. mining support series fast-moving bracket device according to claim 1 and 2, it is characterized in that: the mining support by some is arranged side by side, is provided with side guard board in the back timber both sides of mining support.
6. mining support series fast-moving bracket device according to claim 1 is characterized in that: end oil cylinder is lifted in each hydraulic vertical prop and passing oil cylinder and suspension, is respectively equipped with union and high-pressure oil pipe on its piston two ends cylinder body and connects hydraulic pump and fuel tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017618 CN1702300A (en) | 2005-05-26 | 2005-05-26 | Arrangement for quickly shifting sublevel caving hydraulic support series for fully-mechanized mining of three-soft coal bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017618 CN1702300A (en) | 2005-05-26 | 2005-05-26 | Arrangement for quickly shifting sublevel caving hydraulic support series for fully-mechanized mining of three-soft coal bed |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226410A (en) * | 2011-05-24 | 2011-10-26 | 中煤北京煤矿机械有限责任公司 | Hydraulic support advancing mechanism and thin coal seam hydraulic support |
| CN101526005B (en) * | 2009-04-09 | 2012-03-21 | 山东科技大学 | Skid shoe type bottom raising mechanism of hydraulic support |
| CN102042025B (en) * | 2009-10-10 | 2012-10-03 | 李秋生 | Pushing regulating mechanism |
| CN104502079A (en) * | 2014-12-15 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Stand column dynamic test device |
| CN105041351A (en) * | 2015-08-07 | 2015-11-11 | 四川华蓥山广能集团嘉华机械有限责任公司 | Full-mechanized top-coal caving hydraulic support without four-bar mechanism |
| CN106121701A (en) * | 2016-08-30 | 2016-11-16 | 中国矿业大学(北京) | The guider of a kind of advance timbering base and using method |
| CN106121702A (en) * | 2016-08-30 | 2016-11-16 | 孙姗姗 | A kind of advanced hydraulic support that is accurately positioned moves the apparatus and method in frame path |
| CN106194229A (en) * | 2016-08-30 | 2016-12-07 | 安徽理工大学 | A kind of support directional movement structure improved based on support base plate and method |
| CN106401630A (en) * | 2016-08-30 | 2017-02-15 | 孙姗姗 | Device for preventing side slipping of support base and using method |
| CN108571337A (en) * | 2018-03-27 | 2018-09-25 | 陕西陕煤黄陵矿业有限公司 | A kind of hydraulic support for broken bottom plate moves frame method automatically |
| CN109557599A (en) * | 2018-11-28 | 2019-04-02 | 佛山科学技术学院 | A kind of tunnel stratum detecting device for preventing from collapsing with stable support structure |
| CN110307026A (en) * | 2019-07-02 | 2019-10-08 | 重庆市能源投资集团科技有限责任公司 | A kind of lift bottom method of hydraulic support |
| CN111255499A (en) * | 2020-03-17 | 2020-06-09 | 兖矿集团有限公司 | Control device for sliding top moving frame, corresponding hydraulic support and sliding top moving frame method |
| CN111472826A (en) * | 2020-03-12 | 2020-07-31 | 山东东山古城煤矿有限公司 | Hydraulic prop for caving coal end |
| CN112377233A (en) * | 2020-11-10 | 2021-02-19 | 四川川煤华荣能源股份有限公司 | End bracket moving method |
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2005
- 2005-05-26 CN CN 200510017618 patent/CN1702300A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526005B (en) * | 2009-04-09 | 2012-03-21 | 山东科技大学 | Skid shoe type bottom raising mechanism of hydraulic support |
| CN102042025B (en) * | 2009-10-10 | 2012-10-03 | 李秋生 | Pushing regulating mechanism |
| CN102226410A (en) * | 2011-05-24 | 2011-10-26 | 中煤北京煤矿机械有限责任公司 | Hydraulic support advancing mechanism and thin coal seam hydraulic support |
| CN104502079A (en) * | 2014-12-15 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Stand column dynamic test device |
| CN105041351A (en) * | 2015-08-07 | 2015-11-11 | 四川华蓥山广能集团嘉华机械有限责任公司 | Full-mechanized top-coal caving hydraulic support without four-bar mechanism |
| CN106401630A (en) * | 2016-08-30 | 2017-02-15 | 孙姗姗 | Device for preventing side slipping of support base and using method |
| CN106121702A (en) * | 2016-08-30 | 2016-11-16 | 孙姗姗 | A kind of advanced hydraulic support that is accurately positioned moves the apparatus and method in frame path |
| CN106194229A (en) * | 2016-08-30 | 2016-12-07 | 安徽理工大学 | A kind of support directional movement structure improved based on support base plate and method |
| CN106121701A (en) * | 2016-08-30 | 2016-11-16 | 中国矿业大学(北京) | The guider of a kind of advance timbering base and using method |
| CN106194229B (en) * | 2016-08-30 | 2018-06-05 | 安徽理工大学 | One kind is based on the improved stent directional movement structure of stent bottom plate and method |
| CN108571337A (en) * | 2018-03-27 | 2018-09-25 | 陕西陕煤黄陵矿业有限公司 | A kind of hydraulic support for broken bottom plate moves frame method automatically |
| CN109557599A (en) * | 2018-11-28 | 2019-04-02 | 佛山科学技术学院 | A kind of tunnel stratum detecting device for preventing from collapsing with stable support structure |
| CN110307026A (en) * | 2019-07-02 | 2019-10-08 | 重庆市能源投资集团科技有限责任公司 | A kind of lift bottom method of hydraulic support |
| CN111472826A (en) * | 2020-03-12 | 2020-07-31 | 山东东山古城煤矿有限公司 | Hydraulic prop for caving coal end |
| CN111255499A (en) * | 2020-03-17 | 2020-06-09 | 兖矿集团有限公司 | Control device for sliding top moving frame, corresponding hydraulic support and sliding top moving frame method |
| CN112377233A (en) * | 2020-11-10 | 2021-02-19 | 四川川煤华荣能源股份有限公司 | End bracket moving method |
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