CN104747218A - Roof leakage and roof collapse preventing device of fully-mechanized coal mining hydraulic support - Google Patents
Roof leakage and roof collapse preventing device of fully-mechanized coal mining hydraulic support Download PDFInfo
- Publication number
- CN104747218A CN104747218A CN201510098965.3A CN201510098965A CN104747218A CN 104747218 A CN104747218 A CN 104747218A CN 201510098965 A CN201510098965 A CN 201510098965A CN 104747218 A CN104747218 A CN 104747218A
- Authority
- CN
- China
- Prior art keywords
- roof
- plate
- support
- hydraulic support
- leaking stoppage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title abstract description 11
- 238000005065 mining Methods 0.000 title abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000005336 cracking Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0454—Trailing plates; Coal face or goaf side sprags
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a roof leakage and roof collapse preventing device of a fully-mechanized coal mining hydraulic support. A support frame except side protective plates of an existing coal mine hydraulic support has a too large gap, roof leakage easily occurs and further a serious accident of roof collapse occurs. A drag plate is added for an extensible beam, the drag plate of the extensible beam is lengthened on a front beam and a top beam or a connecting device is directly reserved on the front beam and the top beam, a soft leaking stoppage plate is installed in the gap of the support frame except the side protective plates through the drag plate or the reserved connecting device, and plays the leaking stoppage effect to improve the closing performance of the support to a top plate and prevents roof leakage and roof collapse accidents of the fully mechanized coal mining face. The soft leaking stoppage plate plays the leaking stoppage effect to reduce dust pollution and improve coal quality. The roof leakage and roof collapse preventing device can prevent clamping during support moving operation by using the soft leaking stoppage plate, connection by means of a bolt or the reserved connection device can facilitate maintenance and replacement.
Description
Technical field: the present invention relates to hydraulic support (hereinafter referred to as " the support ") technical field in colliery fully-mechanized mining (hereinafter referred to as " combine and adopt "), particularly relate to the back timber of support, front-axle beam and extensible canopy.
Background technology:
1. combining adopts in production, and passing fault or breaking roof are one of main bugbears, and one is roof fall accident easily occurs have a strong impact on production, and two is that process roof fall accident easily causes casualties;
2. current operational preventive action mainly sliding advance of support, reduces top board hang time when moving frame;
3. support mainly relies on the effect of extensible canopy and face guard in solving the problem at present, top board hang time and raising rib compressive strength during minimizing coal-winning machine coal cutting;
4. but due to sliding advance of support operation very complicated, be difficult to grasp by most people.But in a lot of situation, as long as there is place operation not conform with sliding advance of support requirement, just there will be and leak top until develop into roof fall, cause whole work plane normally to advance.
5. and equipment aspect is not enough:
1) because hydraulic support supporting intensity within the scope of front-axle beam and extensible canopy is more weak, top board loss of stability and broken and inbreak is easily caused;
2) the more important thing is that hydraulic support is in scope except side guard board of back timber, front-axle beam and extensible canopy, between frame, gap is comparatively large, and lacks gap protector.
Summary of the invention:
1. comprehensive mining hydraulic bracket generation roof fall accident is roof cracking, support defect, interval move frame and move and fall the many factors such as frame is excessive in frame operation and cause;
2. roof cracking is geological conditions factor, and then cost is too large Strengthening Roof;
3. roof cracking is also to the rear relevant with stent support power, but limits by the working condition that coal-winning machine and drag conveyor run, and stent support power is difficult to reach;
4. interval is moved frame and is coal-winning machine coal cutting, moves drag conveyor and the overhaul of the equipments time all cannot move frame, moves that productive prospecting that frame can not successively carry out determines, cannot change;
5. falling frame operation is move a necessary operation of frame, due to multi-point and wide-ranging and operating personnel are more, falls that the excessive phenomenon of frame is very difficult to be avoided completely;
6. support defect refers to that support is in scope except side guard board of back timber, front-axle beam and extensible canopy, excesssive gap between frame and exposed area is comparatively large, and breaking roof first occurs leaking top at this gap location, then progressively develops into roof fall;
7., for solving the problem, technical scheme of the present invention is:
1) start with from solution support unit defect, in case leak-stopping backs down the beginning, block breaking roof and develop into roof fall from leakage top;
2) on extensible canopy, install a towing plate additional, move with extensible canopy;
3) pull plate cover extensible canopy or cover whole set cap, front-axle beam and extensible canopy;
4) pull plate and cover the one-sided or both sides of support, and reserved connecting hole;
5) pulling plate can with steel plate or pressure-resistant plastic plate;
6) pull plate and draw runner is being set with back timber and front-axle beam contact surface place, to reduce towrope resistance and to ensure that side guard board action is smooth and easy;
7) soft plugging plate (soft material, but have some strength, the adhesive tape as rubber conveyer) is by bolt and towing plate, or is directly connected with linkage reserved on back timber and front-axle beam;
8) soft plugging plate is arranged on set cap, front-axle beam and extensible canopy one or both sides, stresses seam docking, gap between the frame blocking the back timber between support except side guard board, front-axle beam and extensible canopy scope from the interference of support side or two;
9) soft plugging plate and towing plate sectional are arranged, with convenient, flexible maintenance;
10) soft plugging plate plug rack gap, one can block broken spoil, and two unlikelyly when moving frame operation, eight card can occur;
11) the present invention adopts bolt or reserved linkage connected mode, convenient for maintaining;
12) the present invention solution combine adopt roof fall while, can also significantly reduce dust pollution and improve Coal Quality.
Accompanying drawing illustrates:
1. Fig. 1 be Telescopic beam of hydraulic bracket stretch out (Fig. 1 a) and regain (Fig. 1 b) original state of the art;
2. Fig. 2 be hydraulic support installed additional extensible canopy of the present invention stretch out (Fig. 2 a) and regain (Fig. 2 b) state of the art;
3. Fig. 3 is that the present invention achieves the anti-risk state of the art of leak stopping to gap between support frame;
4. marginal data: 1-extensible canopy, 2-front-axle beam, 3-back timber, 4-fixation side backplate, 5-movable side protection plate, 6-pulls plate, the soft plugging plate of 7-, 8-draw runner.
Detailed description of the invention:
1. as shown in Figure 1, Figure 2 and Figure 3, the present invention is the anti-risk device of a kind of coal mine fully-mechanized mining hydraulic support leakproof, it is characterized in that:
1) the anti-risk ejection device in hydraulic support leakproof top (hereinafter referred to as " device ") is formed by soft plugging plate 7, towing plate 6;
2) device installs towing plate 6 additional on extensible canopy 1;
3) device extends extensible canopy towing plate or directly reserves linkage on front-axle beam 2 and back timber 3;
4) soft plugging plate 7 is passed through towing plate or reserved linkage, be arranged on the gap between support frame except side guard board;
5) soft plugging plate 7 is by leak stopping effect, improves support to the closed performance of top board, prevents fully-mechanized mining working from leaking top and roof fall accident generation;
6) soft plugging plate can prevent from, when moving frame operation, eight card occurs, and connects can change by convenient for maintaining with bolt or reserved linkage;
7) the soft plugging plate on extensible canopy moves with extensible canopy, and the soft plugging plate on back timber and front-axle beam is with extensible canopy or to move frame operation mobile;
8) soft plugging plate can be arranged on support one side or both sides, and interference shutoff or docking in real time heavily seam the gap of the exposure between stifled hydraulic support frames except side guard board, realize the real-time shutoff to gap between hydraulic support frames;
9) effect of soft plugging plate is leaked under preventing the thin block fragment of the breaking roof of supporting above support, and then has blocked top board and destroyed further;
10), after roof destruction is inhibited, roof fall accident just can effectively be prevented;
11) soft plugging plate leak stopping effect also can improve working surface production environment simultaneously well and improve coal ature of coal, and minimizing dust pollution and spoil are mixed into.
Claims (2)
1. the anti-risk ejection device in hydraulic support leakproof top, comprises the towing plate (6) or linkage and soft plugging plate (7) that are connected with extensible canopy (1), front-axle beam (2) and back timber (3); It is characterized in that: by soft plugging plate (7) by towing plate (6) or back timber (3), linkage on front-axle beam (2), from gap between the frame of the complete shutoff hydraulic support in hydraulic support one or both sides except side guard board (4) (5).
2. based on the anti-risk ejection device in hydraulic support leakproof top according to claim 1, it is characterized in that: by installing towing plate on extensible canopy additional, front-axle beam and back timber extend extensible canopy towing plate or directly reserves linkage, soft plugging plate being arranged on gap location between the frame of hydraulic support except side guard board (4) (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510098965.3A CN104747218A (en) | 2015-03-02 | 2015-03-02 | Roof leakage and roof collapse preventing device of fully-mechanized coal mining hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510098965.3A CN104747218A (en) | 2015-03-02 | 2015-03-02 | Roof leakage and roof collapse preventing device of fully-mechanized coal mining hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104747218A true CN104747218A (en) | 2015-07-01 |
Family
ID=53587397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510098965.3A Pending CN104747218A (en) | 2015-03-02 | 2015-03-02 | Roof leakage and roof collapse preventing device of fully-mechanized coal mining hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352334A (en) * | 2021-11-25 | 2022-04-15 | 中国平煤神马能源化工集团有限责任公司 | Coal leakage prevention hydraulic support for caving coal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728863A (en) * | 1971-09-14 | 1973-04-24 | Gewerk Eisenhuette Westfalia | Mine roof support assemblies |
| CN102926790A (en) * | 2012-12-03 | 2013-02-13 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Inter-support coal-leakage-prevention device of combined-mining hydraulic support |
| CN202851032U (en) * | 2012-09-29 | 2013-04-03 | 咸阳科隆特种橡胶制品有限公司 | Sealing rubber board for filling type hydraulic pressure support |
| CN103670475A (en) * | 2013-12-04 | 2014-03-26 | 郑州煤矿机械集团股份有限公司 | Flexible guarding protection-assisting device for hydraulic support |
| CN204572033U (en) * | 2015-03-02 | 2015-08-19 | 程龙斌 | The anti-risk ejection device in comprehensive mining hydraulic bracket leakproof top |
-
2015
- 2015-03-02 CN CN201510098965.3A patent/CN104747218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728863A (en) * | 1971-09-14 | 1973-04-24 | Gewerk Eisenhuette Westfalia | Mine roof support assemblies |
| CN202851032U (en) * | 2012-09-29 | 2013-04-03 | 咸阳科隆特种橡胶制品有限公司 | Sealing rubber board for filling type hydraulic pressure support |
| CN102926790A (en) * | 2012-12-03 | 2013-02-13 | 山西潞安环保能源开发股份有限公司王庄煤矿 | Inter-support coal-leakage-prevention device of combined-mining hydraulic support |
| CN103670475A (en) * | 2013-12-04 | 2014-03-26 | 郑州煤矿机械集团股份有限公司 | Flexible guarding protection-assisting device for hydraulic support |
| CN204572033U (en) * | 2015-03-02 | 2015-08-19 | 程龙斌 | The anti-risk ejection device in comprehensive mining hydraulic bracket leakproof top |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352334A (en) * | 2021-11-25 | 2022-04-15 | 中国平煤神马能源化工集团有限责任公司 | Coal leakage prevention hydraulic support for caving coal |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |
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| RJ01 | Rejection of invention patent application after publication |