CN101886547B - Two-pier shielding type large mining height lapping hydraulic bracket - Google Patents
Two-pier shielding type large mining height lapping hydraulic bracket Download PDFInfo
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- CN101886547B CN101886547B CN 201010201971 CN201010201971A CN101886547B CN 101886547 B CN101886547 B CN 101886547B CN 201010201971 CN201010201971 CN 201010201971 CN 201010201971 A CN201010201971 A CN 201010201971A CN 101886547 B CN101886547 B CN 101886547B
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Abstract
The invention discloses a two-pier shielding type large mining height lapping hydraulic bracket which comprises a base, a top beam, a shielding beam and two piers arranged between the top beam and the base, wherein the supporting height of the bracket is not less than 3.8 m, the rear part of the bracket is provided with a lapping mechanism, the lapping mechanism comprises a tail beam hinged at the rear end of the shielding beam and at least one net roll arranged at the rear part of the base, a tail beam jack is arranged between the shielding beam and the tail beam, and a spile and a spile jack are arranged in the tail beam. A large mining height technology is organically combined with a lapping technology to ensure that the lapping space at the rear part is enlarged, therefore, the invention not only meets the yield requirement and improves the mining efficiency, but also can improve the coal recovery rate.
Description
Technical field
The present invention relates to a kind of hydraulic support, relate in particular to a kind of two-pier shielding type large mining height lapping hydraulic support.
Background technology
Hydraulic support is the indispensable suspension device in the coal mining, and lapping exploitation and top coal caving are two kinds of production practices commonly used of the prior art.
Because the top coal caving work efficiency is high, cost of winning is low, be widely used in the prior art.But the Sub-Level Caving rate of recovery is low, the coal seam is inflammable.
And lapping exploitation work efficiency is low, cost is high, thus large not as good as the Sub-Level Caving promoted extension, but higher to the rate of recovery of coal.3.5 meters of the general height of support with mesh-layingdevice of the prior art use highly approximately 3～3.3 meters.
There is following shortcoming at least in above-mentioned prior art:
Production efficiency and coal recovery rate can not be taken into account.
Summary of the invention
The purpose of this invention is to provide the two-pier shielding type large mining height lapping hydraulic support that a kind of production efficiency is high, coal recovery rate is high.
The objective of the invention is to be achieved through the following technical solutions:
Two-pier shielding type large mining height lapping hydraulic support of the present invention comprises base, back timber, caving shield, is provided with two root posts between back timber and the base, and the supporting height of this support is more than or equal to 3.8m, and the rear portion of this support is provided with net laying mechanism.
As seen from the above technical solution provided by the invention, two-pier shielding type large mining height lapping hydraulic support of the present invention, because the supporting height of this support is more than or equal to 3.8m, the rear portion of this support is provided with net laying mechanism.Large mining height technology and lapping technology are organically combined, lapping space, rear portion is strengthened.Both can satisfy the output requirement, improve production efficiency, and can improve coal recovery rate again.
Description of drawings
Fig. 1 is the structural representation of two-pier shielding type large mining height lapping hydraulic support of the present invention.
The specific embodiment
Two-pier shielding type large mining height lapping hydraulic support of the present invention, its better specific embodiment as shown in Figure 1, comprise base 1, back timber 2, caving shield 3, be provided with two root posts 4 between back timber 2 and the base 1, the supporting height of this support is more than or equal to 3.8m, and the rear portion of this support is provided with net laying mechanism.
Net laying mechanism can comprise the tail boom 5 that is articulated in caving shield 3 rear ends and at least one net volume 6 of being located at base 1 rear portion, is provided with tail boom jack 7 between caving shield 3 and the tail boom 5, forms gear cash mechanism.The upper swinging of tail boom 5 is 10～15 °, and lower swinging is 40～45 °.Tail boom 5 is interior can also to be provided with plate 8 and plate jack 9.
Push unit can be equipped with in the centre of base 1, and the front end of push unit is connected with the front scrapping plate conveyer.
Standard code belongs to large mining height hydraulic support greater than 3.8 meters, the present invention organically combines (support height reaches 7.5m) with large mining height technology and lapping technology, high seam is carried out separate zone production, and do not adopt top coal caving, can satisfy output and require (as more than 300,500 1,000 ten thousand tons), improve mine economic profit; Adopt the separate zone production technology, improve again coal recovery rate.Improve working surface production efficient and resource recovery, satisfied demand safe, efficient, high yield.
Among the present invention, the large more original support with mesh-layingdevice of mining height back space, lapping space, rear portion is larger, for the rear portion provides larger operating space, is easy to networking.Support height can be applied in supporting height more than 3.8 meters, adapt to thick coal-layer mining needs, improved working surface production efficient and resource recovery, satisfy safety, efficiently, the demand of high yield.
The above; only for the better specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (3)
1. a two-pier shielding type large mining height lapping hydraulic support comprises base, back timber, caving shield, is provided with two root posts between back timber and the base, it is characterized in that, the supporting height of this support is more than or equal to 3.8m, and the rear portion of this support is provided with net laying mechanism;
Described net laying mechanism comprises the tail boom that is articulated in described caving shield rear end and is located at least one net volume at described base rear portion, is provided with the tail boom jack between described caving shield and the tail boom;
Be provided with plate and plate jack in the described tail boom.
2. two-pier shielding type large mining height lapping hydraulic support according to claim 1 is characterized in that, the upper swinging of described tail boom is 10～15 °, and lower swinging is 40～45 °.
3. two-pier shielding type large mining height lapping hydraulic support according to claim 1 and 2 is characterized in that, push unit is equipped with in the centre of described base, and the front end of described push unit is connected with the front scrapping plate conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010201971 CN101886547B (en) | 2010-06-10 | 2010-06-10 | Two-pier shielding type large mining height lapping hydraulic bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010201971 CN101886547B (en) | 2010-06-10 | 2010-06-10 | Two-pier shielding type large mining height lapping hydraulic bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886547A CN101886547A (en) | 2010-11-17 |
| CN101886547B true CN101886547B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010201971 Active CN101886547B (en) | 2010-06-10 | 2010-06-10 | Two-pier shielding type large mining height lapping hydraulic bracket |
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| CN (1) | CN101886547B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536292B (en) * | 2012-02-23 | 2015-07-29 | 卡特彼勒（郑州）有限公司 | Automatic coal falling type hydraulic support |
| CN103485785A (en) * | 2013-09-05 | 2014-01-01 | 山东新巨龙能源有限责任公司 | Method for preventing residual coal during top coal caving on fully mechanized caving face |
| CN113653489A (en) * | 2021-08-31 | 2021-11-16 | 中煤科工开采研究院有限公司 | Mining method and net laying mechanism for soft surrounding rock extra-thick coal seam |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128308Y (en) * | 1992-08-14 | 1993-03-17 | 煤炭科学研究总院北京开采研究所 | Caving or network laying hydraulic chock |
| JP4620402B2 (en) * | 2004-07-30 | 2011-01-26 | 日立建機株式会社 | Drilling bucket |
| CN2828314Y (en) * | 2005-08-04 | 2006-10-18 | 窑街煤电有限责任公司 | Expansion hydraulic link mechanism for hydraulic support |
| CN101463729A (en) * | 2009-01-15 | 2009-06-24 | 天地科技股份有限公司 | Hydraulic support for large-mining height caving coal |
| CN101592035A (en) * | 2009-06-25 | 2009-12-02 | 中煤北京煤矿机械有限责任公司 | Big mining height shield type low caving coal hydraulic support |
| CN201705374U (en) * | 2010-06-10 | 2011-01-12 | 中煤北京煤矿机械有限责任公司 | Two-leg shield type mesh laying hydraulic support with large mining height |
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2010
- 2010-06-10 CN CN 201010201971 patent/CN101886547B/en active Active
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| CN101886547A (en) | 2010-11-17 |
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