CN2674095Y - 2L type hydraulic support frame - Google Patents
2L type hydraulic support frame Download PDFInfo
- Publication number
- CN2674095Y CN2674095Y CN 200420000157 CN200420000157U CN2674095Y CN 2674095 Y CN2674095 Y CN 2674095Y CN 200420000157 CN200420000157 CN 200420000157 CN 200420000157 U CN200420000157 U CN 200420000157U CN 2674095 Y CN2674095 Y CN 2674095Y
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- China
- Prior art keywords
- millet
- fine strain
- hydraulic support
- boss
- support frame
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Abstract
A 2L type hydraulic support frame of the utility model relates to a hydraulic support device used on the colliery underground coal face, especially applicable to be used on the soft roof working face and caving coal working face whose thickness of coal seam has biggish variation. The support frame consists of two parallel top beams, a connection device between two top beams, a hydraulic prop and a thrust cylinder, which is characterized in that the top beam is provided with a boss, preventing the top beam from overturning when the support frame supports beneath the uneven top panel of the soft roof, advantaging safety in production. In addition, the hydraulic support frame has the advantages of simple structure, light weight, low cost, easy loading and discharging, easy operation, etc.
Description
Technical field:
2L type hydraulic support relates to a kind of support apparatus that stope uses under coal mine.Belong to back timber formula arranged side by side, weight at the microlight-type hydraulic support below two tons.
Background technology:
Weight has suspended top fine strain of millet hydraulic support (China Patent No. 88104291.9), slide bar type hydraulic support, triadius type hydraulic support, steering hydraulic support (China Patent No. ZL98101279.5) etc. in the top arranged side by side fine strain of millet formula hydraulic support below two tons at present.These supports all have the advantage that volume is little, in light weight, cost is low, operate carrying and easy accessibility, and also substantially exceeding top fine strain of millet aspect functional performance is the slippage top fine strain of millet hydraulic support of front and back arranged type.But the characteristics of above-mentioned support top fine strain of millet section configuration all are narrow and high.For example suspended top fine strain of millet hydraulic support top fine strain of millet is wide 260mm, high 220mm, long 2200mm, like this when being used for the supporting soft roof or not during ceiling, occurs the problem of the crooked even overturning of top fine strain of millet side direction easily, so be unfavorable for keeping the safety in production.In order to address this problem, we once did multiple test, found that, can not reduce because of being subjected to intensity restriction top fine strain of millet profile height.So we manage to increase the width of top fine strain of millet, but because the frame spacing of these supports has only about 1 meter, be again two top fine strain of millet structures arranged side by side, be difficult to so increase top fine strain of millet width, and increased width and also just increased weight and cost, the advantage of carrying and easy accessibility also is affected.
Summary of the invention:
The purpose of 2L type hydraulic support is exactly to provide a kind of advantage that had both kept microlight-type block form hydraulic support in order to overcome the deficiencies in the prior art, the hydraulic support of top fine strain of millet side direction overturning in the time of preventing to support not ceiling and soft roof again.
The purpose of this utility model realizes by following technical measures: 2L type hydraulic support comprises left side top fine strain of millet 2, right top fine strain of millet 4, the fine strain of millet 1 that protracts, hydraulic prop 3, about between the fine strain of millet of top linkage 5 and be contained in about propelling oil cylinder 12 between the fine strain of millet of top form.It is characterized in that being provided with boss 6 at the side of back timber.Boss 6 is the cantilever fine strain of millet along the horizontal weak point that protrudes of top fine strain of millet.The upper plate 9 of boss 6 links to each other with the upper plate 7 of top fine strain of millet, and the leading edge of boss upper plate 9 is provided with arc shape board 10, is welded with gripper shoe 11 below the boss upper plate 9, gripper shoe 11 with push up fine strain of millet side plate 8 and be welded into one.The end of boss 6 can reach near inboard of another top fine strain of millet on image pattern 2 such edges, also can reach front end or the rear end that another pushes up fine strain of millet in the edge like that by image pattern 3.Advance an end and the coupling arrangement 5 of oil cylinder 12 hinged, the other end is hinged with the rear end of right top fine strain of millet 2.
Because the top fine strain of millet of 2L type hydraulic support has boss 6,, strengthened the ability of the anti-side direction overturning of top fine strain of millet so increased the overall width of top fine strain of millet.Because the narrower short fine strain of millet of width that boss 6 just welds out on certain local location of top fine strain of millet so the gross weight of support increases seldom, is still keeping lightweight advantage.
Because the leading edge of the boss top board 9 of 2L type hydraulic support has arc shape board 10, so therefore the problem that projection section is scraped the metal roof net can prevent to move frame the time is still keeping easy to operate advantage.
Description of drawings:
Fig. 1 is the front view of 2L type hydraulic support;
Fig. 2 is the vertical view of 2L type hydraulic support;
Fig. 3 is the vertical view of the 2L type hydraulic support of lengthening boss;
Fig. 4 is the sectional view of boss 6;
Fig. 5 be boss 6 to view;
The specific embodiment:
With reference to figure 1 and Fig. 2,2L type hydraulic support is made up of the coupling arrangement 5 between the fine strain of millet 1 that protracts, top, left side fine strain of millet 2, right top fine strain of millet 4, pillar 3,12, two tops of the propelling oil cylinder fine strain of millet.Wherein the front end from left side top fine strain of millet 2 stretches out a boss 6 to the right, and stretches out a boss 6 left from the rear end of top, right side fine strain of millet 4, and overall width of top, left side fine strain of millet 2 and the right overall width that pushes up fine strain of millet 4 width that all equals the fine strain of millet body adds the length of convex platform 6 like this.For example, the ratio of width to height of top fine strain of millet can reach 2.38 among Fig. 2, the ratio of width to height even reach 3.98 in another embodiment as shown in Figure 3, and in the embodiment that uses that maximum suspended top fine strain of millet hydraulic supports, the ratio of width to height of top fine strain of millet only is 1.18, and the ability of therefore having set up the anti-side direction overturning of its top fine strain of millet of 2L type hydraulic support of boss obviously improves.This has significance to ensureing downhole safety production.
With reference to figure 2, an end of the coupling arrangement 5 of 2L type hydraulic support is hinged on the right side of top, left side fine strain of millet 2, and the other end can push up the inner slide of fine strain of millet 4 along the right side.And can push up fine strain of millet 2 with a left side and move forward, advance an end of oil cylinder 12 to be hinged on the rear end of right top fine strain of millet 4, the other end and that coupling arrangement 5 in front are hinged.The sequence of movement of moving frame is: post is carried in hydraulic prop 3 unloadings below top, the left side fine strain of millet 2, make top, left side fine strain of millet 2 be suspended on top, the right side fine strain of millet 4 that is in holding state by coupling arrangement 5, advance the piston rod of oil cylinder 12 to stretch out, promote left side top fine strain of millet 2 and coupling arrangement 5 and move forward a step pitch together, hydraulic prop 3 setting props under the fine strain of millet 2 of top, a left side also enter holding state.Hydraulic prop 3 under the fine strain of millet 4 of right then top is carried post, advances the right top of oil cylinder 12 pullings fine strain of millet 4 step pitches of follow-up and enters holding state.
With reference to figure 4 and Fig. 5, be provided with arc shape board 10 in the leading edge of boss top board 9, arc shape board 10 can prevent that the leading edge of boss top board 9 from scraping disconnected metal roof net when top fine strain of millet is being pasted face roof and moves forward.The transverse shape of arc shape board 9 is downward-sloping smooth curve or broken line.
Boss top board 9 connects together with the top board 7 of top fine strain of millet, also can adopt welded construction in order to save material.
One side of gripper shoe 11 is welded into one with the side plate 8 of top fine strain of millet,, another side and boss top board 9 are welded into one.Its effect prevents that just the face roof that boss top board 9 is sunk from bending, so its shape and quantity are determined to get final product by requirement of strength.
Boss on the fine strain of millet 2 of top, a left side is basic identical with the boss of right top fine strain of millet 4.
With reference to figure 3, too uneven or cross when soft and can make shape shown in Figure 3 to the boss 6 that fine strain of millet 4 is pushed up on the right side when the top board of work plane.If do not need in the fine strain of millet 4 of right top, then can the front end that fine strain of millet 4 is pushed up on the right side be shortened, boss 6 lengthenings on the fine strain of millet 2 of top, a left side, always along the place ahead that reaches right top fine strain of millet 4 by the dress fine strain of millet 1 that protracts.The ratio of width to height of left and right like this top fine strain of millet can both be up to 3.98, even or else flat-top fine strain of millet can the side direction overturning yet for face roof, so not only can guarantee safe production, also saved the workload that many pads are just pushing up fine strain of millet and safeguarding top board.
Because block form supports such as 2L type hydraulic support and suspended top fine strain of millet hydraulic support are compared, only increased boss 6, and the weight of boss 6 is lighter, structure is quite simple, so the cost increase seldom, therefore 2L type hydraulic support both had that the volume of microlight-type block form hydraulic support is little, in light weight, simple in structure, the advantage of operation and easy accessibility, solved the not problem of the easy side direction overturning of top fine strain of millet when ceiling and soft roof of supporting again, be the very strong hydraulic support of a kind of applicability.
Claims (3)
1,2L type hydraulic support relates to the down-hole coal excavation work plane and pushes up fine strain of millet formula microlight-type support apparatus side by side, comprises that top, left side fine strain of millet (2), right top fine strain of millet (4), coupling arrangement (5), the fine strain of millet that protracts (1), hydraulic prop (3) and the propelling oil cylinders (12) that are contained between the two top fine strains of millet form.It is characterized in that boss (6) being arranged at the side of left and right top fine strain of millet.
2, hydraulic support according to claim 1 is characterized in that arc shape board (10) is located at the leading edge of boss top board (9), and is bent downwardly in the boss of being made up of boss top board (9), gripper shoe (11) and arc shape board (10) (6).
3, hydraulic support according to claim 2 is characterized in that the transverse shape of arc shape board (10) is slick and sly curve or broken line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000157 CN2674095Y (en) | 2004-01-06 | 2004-01-06 | 2L type hydraulic support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000157 CN2674095Y (en) | 2004-01-06 | 2004-01-06 | 2L type hydraulic support frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674095Y true CN2674095Y (en) | 2005-01-26 |
Family
ID=34481970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420000157 Expired - Lifetime CN2674095Y (en) | 2004-01-06 | 2004-01-06 | 2L type hydraulic support frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674095Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006076828A1 (en) * | 2005-01-21 | 2006-07-27 | Zeyu Li | A hydraulic roof support |
-
2004
- 2004-01-06 CN CN 200420000157 patent/CN2674095Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006076828A1 (en) * | 2005-01-21 | 2006-07-27 | Zeyu Li | A hydraulic roof support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140106 Granted publication date: 20050126 |
|
| CX01 | Expiry of patent term |