CN202866848U - Top coal caving support capable of preventing extensible beam from offsetting - Google Patents
Top coal caving support capable of preventing extensible beam from offsetting Download PDFInfo
- Publication number
- CN202866848U CN202866848U CN201220469726.6U CN201220469726U CN202866848U CN 202866848 U CN202866848 U CN 202866848U CN 201220469726 U CN201220469726 U CN 201220469726U CN 202866848 U CN202866848 U CN 202866848U
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- Prior art keywords
- extensible canopy
- extensible
- hinged
- hinge
- offsetting
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Abstract
The utility model discloses a top coal caving support capable of preventing an extensible beam form offsetting. The top coal caving support capable of preventing the extensible beam form offsetting solves the problem that an extensible beam in an existing top coal caving support is prone to appearance of offsetting and locking in a front beam body. The top coal caving support capable of preventing the extensible beam form offsetting comprises a base (17), a front connecting rod (11), a rear connecting rod (12) and a shielding beam (14). A front hydraulic stand column (9) and a rear hydraulic stand column (10) are respectively arranged on the base (17). A top beam (7) is arranged between the top end of the front hydraulic stand column (9) and the top end of the rear hydraulic stand column (10). A sliding rail is arranged in a cavity body of a cavity front beam (5). A sliding block is movably arranged on the sliding rail. An extensible beam (4) is fixedly arranged on the sliding block. A shoulder beam (1) is in hinged connection with the front end of the extensible beam (4). An extensible beam drive air cylinder (6) is arranged on the lower bottom face of the cavity front beam (5). An output shaft of the extensible beam drive air cylinder (6) is in hinged connection with the front end of the extensible beam (4). The extensible beam of the top coal caving is enabled to be capable of expansion and contraction, and immediate support of an underground working plane is achieved.
Description
Technical field
The utility model relates to a kind of sublevel caving hydrau lic support that prevents the extensible canopy skew that has.
Background technology
Sublevel caving hydrau lic support is the underground work capital equipment, and sublevel caving hydrau lic support is when operation, and the extensible canopy on it will stretch repeatedly.The extensible canopy of existing sublevel caving hydrau lic support generally is to adopt casing telescopic; in actual condition; because work plane tilts or two flexible jack are stressed asynchronous; extensible canopy often can occur to be offset and stuck situation in the front-axle beam body; cause support can't realize the immediate support of work plane, thereby affect the downhole safety operation.
Summary of the invention
The utility model provides a kind of sublevel caving hydrau lic support that prevents the extensible canopy skew, solved the extensible canopy of existing sublevel caving hydrau lic support in the coal mining process, particularly, extensible canopy often occurs be offset and stuck technical problem in the front-axle beam body not in the operating mode of easy care at face roof.
The utility model is by the above problem of following solution:
A kind of sublevel caving hydrau lic support that prevents the extensible canopy skew, comprise base, front rod, back link and caving shield, the upper end of front rod is connected with caving shield by the first hinge, the lower end of front rod is connected with base by the second hinge, the upper end of back link is connected with caving shield by the 3rd hinge, the lower end of back link is connected with base by the 4th hinge, hydraulic vertical prop and rear hydraulic vertical prop before base is respectively arranged with, the top of front hydraulic vertical prop and and the top of rear hydraulic vertical prop between be provided with back timber, the rear end of back timber is connected with the front end of caving shield by the 5th hinge, be provided with tail boom and plate in the rear end of caving shield, the front end of back timber is connected with the cavity front-axle beam by the 6th hinge, in the cavity of cavity front-axle beam, be provided with slide rail, be movably set with slide block at slide rail, be fixedly installed extensible canopy at slide block, be hinged with outrigger at the front end of extensible canopy, bottom surface at the cavity front-axle beam is provided with extensible canopy driving cylinder, and the output shaft of extensible canopy driving cylinder and the front end of extensible canopy are hinged.
Outrigger is V-arrangement, and the outrigger afterbody of V-arrangement and the front end of extensible canopy are hinged, and the outrigger middle part of V-arrangement is hinged with an end of quarter butt, and the other end and the stock of quarter butt are hinged, and the other end of stock and the front end of extensible canopy are hinged.
The utility model arranges in support front-axle beam cavity slides guide rail, has accurately controlled the traffic direction of extensible canopy, guarantees that it is not offset, and extensible canopy can be stretched in the controlled margin of tolerance of guide rail slide, and has realized the immediate support of mining face under mine.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
A kind of sublevel caving hydrau lic support that prevents the extensible canopy skew, comprise base 17, front rod 11, back link 12 and caving shield 14, the upper end of front rod 11 is connected with caving shield 14 by the first hinge 18, the lower end of front rod 11 is connected with base 17 by the second hinge 20, the upper end of back link 12 is connected with caving shield 14 by the 3rd hinge 19, the lower end of back link 12 is connected with base 17 by the 4th hinge 21, front rod 11, back link 12, caving shield 14 and base 17 form stable quadric chain, hydraulic vertical prop 9 and rear hydraulic vertical prop 10 before base 17 is respectively arranged with, the top of front hydraulic vertical prop 9 and and the top of rear hydraulic vertical prop 10 between be provided with back timber 7, in order to lifting and the support that realizes hydraulic support.The rear end of back timber 7 is connected with the front end of caving shield 14 by the 5th hinge 13, is provided with tail boom 15 and plate 16 in the rear end of caving shield 14, and plate 16 is installed in tail boom 15 cavitys, realizes expanding-contracting action by the plate jack.The front end of back timber 7 is connected with cavity front-axle beam 5 by the 6th hinge 8, in the cavity of cavity front-axle beam 5, be provided with slide rail, be movably set with slide block at slide rail, be fixedly installed extensible canopy 4 at slide block, front end at extensible canopy 4 is hinged with outrigger 1, bottom surface at cavity front-axle beam 5 is provided with extensible canopy driving cylinder 6, and the output shaft of extensible canopy driving cylinder 6 and the front end of extensible canopy 4 are hinged.
Claims (2)
1. sublevel caving hydrau lic support that can prevent extensible canopy skew, comprise base (17), front rod (11), back link (12) and caving shield (14), the upper end of front rod (11) is connected with caving shield (14) by the first hinge (18), the lower end of front rod (11) is connected with base (17) by the second hinge (20), the upper end of back link (12) is connected with caving shield (14) by the 3rd hinge (19), the lower end of back link (12) is connected with base (17) by the 4th hinge (21), be respectively arranged with front hydraulic vertical prop (9) and rear hydraulic vertical prop (10) at base (17), the top of front hydraulic vertical prop (9) and and the top of rear hydraulic vertical prop (10) between be provided with back timber (7), the rear end of back timber (7) is connected with the front end of caving shield (14) by the 5th hinge (13), be provided with tail boom (15) and plate (16) in the rear end of caving shield (14), the front end of back timber (7) is connected with cavity front-axle beam (5) by the 6th hinge (8), it is characterized in that, in the cavity of cavity front-axle beam (5), be provided with slide rail, be movably set with slide block at slide rail, be fixedly installed extensible canopy (4) at slide block, front end at extensible canopy (4) is hinged with outrigger (1), bottom surface at cavity front-axle beam (5) is provided with extensible canopy driving cylinder (6), and the output shaft of extensible canopy driving cylinder (6) and the front end of extensible canopy (4) are hinged.
2. a kind of sublevel caving hydrau lic support that prevents extensible canopy skew according to claim 1, it is characterized in that, outrigger (1) is V-arrangement, the front end of the outrigger of V-arrangement (1) afterbody and extensible canopy (4) is hinged, the outrigger of V-arrangement (1) middle part is hinged with an end of quarter butt (2), the other end of quarter butt (2) and stock (3) are hinged, and the front end of the other end of stock (3) and extensible canopy (4) is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220469726.6U CN202866848U (en) | 2012-09-12 | 2012-09-12 | Top coal caving support capable of preventing extensible beam from offsetting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220469726.6U CN202866848U (en) | 2012-09-12 | 2012-09-12 | Top coal caving support capable of preventing extensible beam from offsetting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202866848U true CN202866848U (en) | 2013-04-10 |
Family
ID=48033573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220469726.6U Expired - Lifetime CN202866848U (en) | 2012-09-12 | 2012-09-12 | Top coal caving support capable of preventing extensible beam from offsetting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202866848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706377A (en) * | 2020-06-16 | 2020-09-25 | 中煤科工开采研究院有限公司 | Super large mining height hydraulic support |
| CN112196592A (en) * | 2020-09-02 | 2021-01-08 | 六盘水师范学院 | Can prevent caving coal support of flexible roof beam skew |
-
2012
- 2012-09-12 CN CN201220469726.6U patent/CN202866848U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706377A (en) * | 2020-06-16 | 2020-09-25 | 中煤科工开采研究院有限公司 | Super large mining height hydraulic support |
| CN111706377B (en) * | 2020-06-16 | 2022-03-15 | 中煤科工开采研究院有限公司 | Super large mining height hydraulic support |
| CN112196592A (en) * | 2020-09-02 | 2021-01-08 | 六盘水师范学院 | Can prevent caving coal support of flexible roof beam skew |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |