CN212563300U - Unit type forepoling with tail beam - Google Patents
Unit type forepoling with tail beam Download PDFInfo
- Publication number
- CN212563300U CN212563300U CN202021158241.6U CN202021158241U CN212563300U CN 212563300 U CN212563300 U CN 212563300U CN 202021158241 U CN202021158241 U CN 202021158241U CN 212563300 U CN212563300 U CN 212563300U
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- CN
- China
- Prior art keywords
- tail beam
- tail
- jack
- hinged
- fixed
- 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
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Abstract
A tail beam is hinged behind a top beam of the unit type forepoling, and the tail beam is connected with the top beam through a tail beam jack and a matched hydraulic system; a pair of fixed ear plates are respectively arranged at the rear part and the lower part of the top beam of the box-type structure, the rear ear plate is hinged with the tail beam, the lower ear plate is hinged with the tail beam jack, and the lower ear plate is of an open fixed structure; the tail beam is of a box-type structure, and two groups of round holes are respectively hinged and fixed with the top beam and the tail beam jack; the tail beam jack adopts a jack with a middle trunnion fixed form. The utility model has simple structure, easy manufacture and processing, and convenient operation and use; the tail beam jack is controlled to stretch out and retract through the control valve, the tail beam of the advance support is stretched out and retracted, the purpose of supporting the roadway roof in an auxiliary mode is achieved, the degree of mechanization is high, operation safety in the super-front area is guaranteed, personal injury accidents are avoided, and the management level of the roadway roof is improved.
Description
Technical Field
The utility model relates to a colliery is supporting equipment down, is specifically said to combine to adopt the supporting equipment in the super front area of working face in the colliery.
Background
At present, a coal mining working face of a coal mine is generally supported by a single strut, a stepping forward advance support or a unit advance support in an advance area of a gateway roadway. The single prop has large supporting workload and low mechanization degree; the forward advancing type forepoling is simple and convenient to support, but can repeatedly support the top plate, is not beneficial to the safety management and maintenance of the top plate, and is easy to cause the breakage of the top plate; the unit type forepoling adopts a circulating frame moving mode of changing a rear frame into a front frame, the mechanization degree is high, and meanwhile, the damage to a roadway top plate can be avoided.
Disclosure of Invention
The purpose of the invention is: a unit type forepoling with a tail beam is designed, the tail beam is hinged with a forepoling top beam, the tail beam is in a vertical state in a supporting state, the forepoling top beam is an effective supporting component, after the last forepoling advances with the advance of a coal face, a large empty roof area exists in an original supporting position, at the moment, a penultimate forepoling (the penultimate forepoling) can extend out the tail beam to support a top plate in an auxiliary mode, the safety of underground work operation is guaranteed, when the face continues to advance, the tail beam is retracted and moved along with the advance, and then a supporting-moving cycle is completed.
The technical scheme adopted for achieving the purpose of the invention is as follows: a tail beam is hinged behind the top beam of the unit type forepoling, and the tail beam is connected with the top beam through a tail beam jack and a matched hydraulic system; a pair of fixed ear plates are respectively arranged at the rear part and the lower part of the top beam of the box-type structure, the rear ear plate is hinged with the tail beam, the lower ear plate is hinged with the tail beam jack, and the lower ear plate is of an open fixed structure; the tail beam is of a box-type structure, and two groups of round holes are respectively hinged and fixed with the top beam and the tail beam jack; the tail beam jack adopts a jack with a middle trunnion fixed form.
The hydraulic control system belongs to the conventional technology, and the hydraulic control system of the device can be designed by persons of ordinary skill in the art, and is not described in detail herein.
The utility model has the advantages that: the structure is simple, the manufacture and the processing are easy, and the operation and the use are convenient; the tail beam jack is controlled to stretch out and retract through the control valve, the tail beam of the advance support is stretched out and retracted, the purpose of supporting the roadway roof in an auxiliary mode is achieved, the degree of mechanization is high, operation safety in the super-front area is guaranteed, personal injury accidents are avoided, and the management level of the roadway roof is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic view of the tail boom jack profile; FIG. 3 is a schematic bottom view of the tail boom after it has been extended; fig. 4 is a diagram of the tail boom in an extended state.
Detailed Description
As shown in attached figures 1 and 3, a tail beam 2 is hinged behind a top beam 1 of the unit type forepoling, and the tail beam 2 is connected with the top beam 1 through a tail beam jack 3 and a matched hydraulic system; the top beam 1 is of a box-type structure, a pair of ear plates 4 are welded at the rear part of the top beam 1, a pair of ear plates 5 are welded below the top beam 1, and the ear plates 5 are of an open fixed structure; the tail beam 2 is also of a box-type structure, a top plate extends out of one end of the tail beam 2, a pair of ear plates 6 are welded below the top plate, a pair of ear plates 7 perpendicular to the ear plates 6 are welded on the inner sides of the ear plates 6, the ear plates 6 are connected with the ear plates 4 at the rear part of the top beam 1 through pin shafts 8, and the end parts of piston rods of the tail beam jacks 3 are connected with the ear plates 7 through pin shafts 9; as shown in fig. 2, the center of the tail boom jack 3 is provided with a pair of trunnions 10, and the trunnions 10 are engaged with the ear plates 5 under the top beam 1 and locked by the pins 11 to prevent the tail boom jack 3 from slipping out of the ear plates 5. The extension and the retraction of the tail beam 2 are realized through the extension and the retraction of the tail beam jack 3, and the purpose of supporting a top plate is achieved.
The utility model discloses a working process is:
the tail beam 2 is hinged with the top beam 1 of the unit type forepoling, the tail beam 2 is in a vertical state (as shown in attached drawing 1) in a supporting state, the top beam 1 of the unit type forepoling is an effective supporting component, a large empty roof area exists in an original supporting position after the last forepoling moves forwards along with the advancing of a coal face, at the moment, a hydraulic system is started, the tail beam 2 is extended out by the penultimate forepoling (the penultimate forepoling is the first support) (as shown in attached drawing 4), the top plate is supported in an auxiliary mode, the safety of underground work operation is guaranteed, when the working face continues to advance, the tail beam 2 is retracted and moved along with the forward, and then a supporting-moving cycle is completed.
Claims (1)
1. The utility model provides a take unitized fore-stock of tail boom which characterized in that: a tail beam is hinged behind the top beam of the unit type forepoling, and the tail beam is connected with the top beam through a tail beam jack and a matched hydraulic system; a pair of fixed ear plates are respectively arranged at the rear part and the lower part of the top beam of the box-type structure, the rear ear plate is hinged with the tail beam, the lower ear plate is hinged with the tail beam jack, and the lower ear plate is of an open fixed structure; the tail beam is of a box-type structure, and two groups of round holes are respectively hinged and fixed with the top beam and the tail beam jack; the tail beam jack adopts a jack with a middle trunnion fixed form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021158241.6U CN212563300U (en) | 2020-06-22 | 2020-06-22 | Unit type forepoling with tail beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021158241.6U CN212563300U (en) | 2020-06-22 | 2020-06-22 | Unit type forepoling with tail beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212563300U true CN212563300U (en) | 2021-02-19 |
Family
ID=74613334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021158241.6U Expired - Fee Related CN212563300U (en) | 2020-06-22 | 2020-06-22 | Unit type forepoling with tail beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212563300U (en) |
-
2020
- 2020-06-22 CN CN202021158241.6U patent/CN212563300U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 Termination date: 20210622 |