CN201924952U - Double-stroke hydraulic support - Google Patents
Double-stroke hydraulic support Download PDFInfo
- Publication number
- CN201924952U CN201924952U CN2010206822878U CN201020682287U CN201924952U CN 201924952 U CN201924952 U CN 201924952U CN 2010206822878 U CN2010206822878 U CN 2010206822878U CN 201020682287 U CN201020682287 U CN 201020682287U CN 201924952 U CN201924952 U CN 201924952U
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- CN
- China
- Prior art keywords
- hydraulic
- stroke
- base
- support
- hydraulic jack
- 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.)
- Expired - Fee Related
Links
- 239000011295 pitch Substances 0.000 description 11
- 238000005065 mining Methods 0.000 description 9
- 239000003245 coal Substances 0.000 description 8
- 239000011435 rock Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000037433 frameshift Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A double-stroke hydraulic support comprises a base, a hydraulic prop arranged on the base, and a top beam connected with the hydraulic prop, wherein a hydraulic jack, which moves in two gears and is connected with the lateral wall of a drag conveyor, is horizontally arranged on the base; and a connecting rod is arranged at the joint of a push rod of the hydraulic jack and the lateral wall of the drag conveyor. By changing the stroke of the hydraulic jack, the hydraulic support has a double-stroke structure, which can meet the requirement on two kinds of advancing paces. Through realizing quick support moving once for all, the advancing numbers is reduced by 30% to 40%, and the double-stroke hydraulic support shortens the time for the support moving, realizes quick support moving, improves extracting efficiency, saves time and improves efficiency.
Description
Technical field
The utility model relates to a kind of two-pass hydraulic support, is particularly useful for extremely unstable thin seam mining, comprises that big gun is adopted with machine to adopt two kinds of situations, can satisfy machine and adopt and advance step pitch 0.6m and big gun to adopt to advance two kinds of different demands that advance step pitches of step pitch 0.8m.
Background technology
In extremely unstable thin seam mining process, because coal seam thickness is less and change greatlyyer, need coal seam and part rock stratum are exploited together, frequently change the variation that exploitation method adapts to thickness, comprise that machine is adopted with big gun to adopt two kinds of situations.Less when depth of stratum, machine instruction statement mining can where applicable, carries out machine and adopts, and whenever pushes away further, and support and drag conveyor need be passed 0.6m forward and carry out next step exploitation; Along with diminishing of coal seam thickness, depth of stratum increases, and mechanical strength can not satisfy the demand of exploitation, just needs to adopt big gun to adopt, and by blowing out avalanche coal body and rock stratum, at this moment, whenever pushes away further support and need pass 0.8m forward.The frequent switching of both of these case just causes support to pass the frequent change of step pitch, traditional ultra-thin coal seam support is passed structure only a kind of passing step pitch 0.6m, promptly only can satisfy machine and adopt condition, when using big gun to adopt, just need move frame twice, this has just wasted a large amount of time, makes exploitation advance slowly, influences production efficiency.Particularly thin seam mining because the efficient of producing coal is original just not high, never allows a large amount of time of waste.
The utility model content
The purpose of this utility model provides a kind of two-pass hydraulic support, by changing the stroke of hydraulic jack, make it have the propelling step pitch that different gears comes control bracket and drag conveyor, to satisfy the frame demand of moving under the different mining conditions, reduce and move the sortie number, save the production time, enhance productivity.
Two-pass hydraulic support of the present utility model, comprise base, be located at the hydraulic prop on the base, the back timber that links to each other with hydraulic prop, level is provided with two gears of branch and moves the hydraulic jack that is connected with the drag conveyor lateral wall on described base, and the push rod of hydraulic jack and drag conveyor lateral wall junction are connected with connecting rod.
The length of described connecting rod is 0.6m; The push rod stroke of described hydraulic jack is 0.8m.
The beneficial effects of the utility model: by changing the stroke of hydraulic jack, make it have the two-pass structure, can satisfy two kinds of demands that advance step pitch.Especially for extremely unstable thin seam mining, the coal seam thickness frequent variations causes the variation of exploitation, and then causes advancing the frequent change of step pitch, switch gear according to different exploitation needs, change the stroke of hydraulic jack, change the propelling step pitch, the increase of the propelling number of times that minimizing brings because of the change that advances step pitch, disposable realization fast-moving bracket can reduce advancing number of times 30% ~ 40%, shortens frame-shift time, realize fast-moving bracket, improve production efficiency, save time, raise the efficiency.Has fabulous promotional value.
Description of drawings
Fig. 1 is that the utility model two-pass support is passed structural representation.
Among the figure: 1-hydraulic jack, 2-hydraulic prop, 3-base, 4-drag conveyor, 5-connecting rod, 6-back timber.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Two-pass hydraulic support of the present utility model, mainly comprise hydraulic jack 1, hydraulic prop 2, base 3, base 3 is provided with hydraulic prop 2, hydraulic prop 2 is connected with back timber 6, level is provided with two gears of branch and moves the hydraulic jack 1 that is connected with drag conveyor 4 lateral walls on the base 3, the push rod of hydraulic jack 1 and drag conveyor 4 lateral wall junctions are connected with connecting rod 5, and the length of connecting rod 5 is 0.6m; The push rod stroke of hydraulic jack 1 is 0.8m.By changing the stroke of hydraulic jack 1, can realize two different passing step pitches, in extremely unstable thin seam mining process,, need exploit a part of rock stratum in the time of working seam because coal seam thickness is less and it is bigger to change.At mining rock stratum thickness hour, adopt machine instruction statement mining, at this moment, whenever push away further, support and drag conveyor need be pushed ahead 0.6m; And when depth of stratum change need carrying out greatly big gun is adopted, whenever push away further, support and drag conveyor need be pushed ahead 0.8m.When work plane use machine is adopted, hydraulic prop 2 elongations make back timber 6 connect the top fully, elongation hydraulic jack 1, by connecting rod 5 drag conveyor 4 is pushed ahead 0.6m, reducing hydraulic prop 2 then breaks away from back timber 6 and top board, shrink hydraulic jack 1 hydraulic prop 2 and base 3 are pushed ahead 0.6m, finish and move frame.When work plane uses big gun to adopt, hydraulic prop 2 elongations make back timber 6 connect the top fully, elongation hydraulic jack 1, by connecting rod 5 drag conveyor 4 is pushed ahead 0.8m, reducing hydraulic prop 2 then breaks away from back timber 6 and top board, shrink hydraulic jack 1 hydraulic prop 2 and base 3 are pushed ahead 0.8m, finish and move frame.Reduce the passing number of times of support and drag conveyor, saved time, improved production efficiency.
Claims (3)
1. two-pass hydraulic support, comprise base (3), be located at the hydraulic prop (2) on the base (3), the back timber (6) that links to each other with hydraulic prop (2), it is characterized in that: be provided with two gears of branch in the last level of described base (3) and move the hydraulic jack (1) that is connected with drag conveyor (4) lateral wall, the push rod of hydraulic jack (1) and drag conveyor (4) lateral wall junction are connected with connecting rod (5).
2. two-pass hydraulic support according to claim 1 is characterized in that: the length of described connecting rod (5) is 0.6m.
3. two-pass hydraulic support according to claim 1 is characterized in that: the push rod stroke of described hydraulic jack (1) is 0.8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206822878U CN201924952U (en) | 2010-12-28 | 2010-12-28 | Double-stroke hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206822878U CN201924952U (en) | 2010-12-28 | 2010-12-28 | Double-stroke hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201924952U true CN201924952U (en) | 2011-08-10 |
Family
ID=44428810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206822878U Expired - Fee Related CN201924952U (en) | 2010-12-28 | 2010-12-28 | Double-stroke hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201924952U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448152A (en) * | 2017-07-20 | 2017-12-08 | 陕西陕煤韩城矿业有限公司 | Combined hydraulic jumbolter workbench |
| CN109736868A (en) * | 2018-12-11 | 2019-05-10 | 中国矿业大学 | Fully mechanized coal face hydraulic support elapses push rod pose sensing device, fully mechanized coal face hydraulic support passage transfer bar mechanism and method |
-
2010
- 2010-12-28 CN CN2010206822878U patent/CN201924952U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448152A (en) * | 2017-07-20 | 2017-12-08 | 陕西陕煤韩城矿业有限公司 | Combined hydraulic jumbolter workbench |
| CN107448152B (en) * | 2017-07-20 | 2023-05-12 | 陕西陕煤韩城矿业有限公司 | Hydraulic combined jumbolter working platform |
| CN109736868A (en) * | 2018-12-11 | 2019-05-10 | 中国矿业大学 | Fully mechanized coal face hydraulic support elapses push rod pose sensing device, fully mechanized coal face hydraulic support passage transfer bar mechanism and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |