CN220118159U - Air return tunnel end support - Google Patents
Air return tunnel end support Download PDFInfo
- Publication number
- CN220118159U CN220118159U CN202320828055.6U CN202320828055U CN220118159U CN 220118159 U CN220118159 U CN 220118159U CN 202320828055 U CN202320828055 U CN 202320828055U CN 220118159 U CN220118159 U CN 220118159U
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- Prior art keywords
- top beam
- hinged
- jack
- secondary side
- guard plate
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- 239000003245 coal Substances 0.000 abstract description 18
- 230000007704 transition Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Abstract
The utility model relates to the technical field of hydraulic supports, in particular to an air return roadway end support, which comprises a top beam, a base and a main hydraulic rod, wherein the lower end of the main hydraulic rod is connected with the base; the front end of the top beam is hinged with a front beam, the rear end of the top beam is hinged with a shield beam, a big tail beam and a small tail beam in sequence, the front beam and the top beam are respectively hinged with a front beam secondary side guard plate and a top beam secondary side guard plate, and the front beam secondary side guard plate and the top beam secondary side guard plate are both provided with the same side of the front beam or the top beam. The utility model ensures the support of the roof and the rolling-off prevention of the roof coal of the transition frame all the time in the working process, overcomes the influence of complex geological conditions of the coal mine on the coal seam exploitation, and protects the safety of the roof and the roadway of the working face.
Description
Technical Field
The utility model relates to the technical field of hydraulic supports, in particular to an air return tunnel end support.
Background
The end support is a hydraulic support supported on a top plate of a crossheading roadway, the working principle of the hydraulic support is that a top beam is generally used for supporting the top plate, a shield beam is used for preventing stones from falling off, the hydraulic support is protected from being impacted by the stones in the whole working process, and the safety of each part of the hydraulic support is ensured, for example, the hydraulic support has the following publication number: the end bracket component disclosed in the Chinese patent of CN 111456791A.
When the head of the roof at the joint of the fully-mechanized coal mining working face and the crossheading is large, the existing end support is easy to cause the coal of the transition frame roof of the working face to roll down to the crossheading, the empty roof of the transition frame roof and the support cannot be connected, and the safety production of the coal mine is affected.
Accordingly, there is a need for improvements over the prior art.
Disclosure of Invention
In order to overcome the defects in the prior art, the air return tunnel end support is provided, which can ensure the roof support in the working process, prevent the transition frame roof coal from rolling down and protect the working face roof and tunnel safety.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the air return roadway end support comprises a top beam, a base and a main hydraulic rod, wherein the lower end of the main hydraulic rod is connected with the base, the upper end of the main hydraulic rod is connected with the top beam, a telescopic sleeve is arranged on the base along the vertical direction, a telescopic column is arranged in the telescopic sleeve in a sliding manner, and the upper end of the telescopic column is hinged with the top beam;
the front end of the top beam is hinged with a front beam, the rear end of the top beam is hinged with a shield beam, a big tail beam and a small tail beam in sequence, the front beam and the top beam are respectively hinged with a front beam secondary side guard plate and a top beam secondary side guard plate, and the front beam secondary side guard plate and the top beam secondary side guard plate are both provided with the same side of the front beam or the top beam.
Further, a front beam jack is arranged between the front beam and the top beam, tail beam jacks are arranged between the shield beam and the big tail beam and between the big tail beam and the small tail beam, and a shield beam jack is arranged between the shield beam and the base.
Further, the top beam is provided with a side pushing jack, the piston end of the side pushing jack is connected with a side pushing beam, and the side pushing beam is positioned on one side of the top beam with the top beam secondary side guard plate.
Further, the front end of the front beam is slidably provided with a telescopic beam, and a telescopic jack is arranged between the telescopic beam and the front beam.
Further, a pushing jack is arranged on the base, a pushing rod is connected to the piston end of the pushing jack, and a connector capable of being connected with the front scraper conveyor is hinged to the front end of the pushing rod through a pin shaft.
Further, one side of the base is hinged with a back sliding jack.
Working principle:
the product is arranged at the joint of the mine coal face and the crossheading, is used for supporting the end head top plate, prevents the coal of the transition frame top plate from rolling off, avoids the condition that the transition frame top plate is empty and the support cannot be connected with the roof, completes the coal discharging operation of the tunnel roof, and realizes end head mechanization; the two frames which are bilaterally symmetrical are combined and arranged at the junction of the air return roadway and the working surface and are matched with the working surface bracket and the transition bracket for use; in the working process, the lifting guide mechanism adopts a two-stage telescopic rigid beam consisting of a telescopic column and a telescopic sleeve, one end of the two-stage telescopic rigid beam is hinged with the top beam, and the other end of the two-stage telescopic rigid beam is connected with the base, so that the support forms a complete whole in a vertical movement, and the support moves in a lifting manner according to a certain linear track. Emulsion from the high-pressure pump enters the control valve through the bracket stop valve by the main liquid inlet pipeline, and is respectively supplied to each hydraulic cylinder through the control valve, so that each action of the end bracket is completed.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model ensures the support of the roof and the rolling-off prevention of the roof coal of the transition frame all the time in the working process, overcomes the influence of complex geological conditions of the coal mine on the coal seam exploitation, and protects the safety of the roof and the roadway of the working face.
2. The base occupies small space, solves the problem of the containing space required by motor reducers of the front and rear scraper conveyors of the end bracket, and ensures that the horn mouths of the front and rear conveyors are as small as possible; the front beam and the top beam are provided with the fixed wide side guard plates and the secondary side guard devices, so that the problem of high fall of the top plate at the joint of the transition frame and the end frame is solved, the phenomenon that the top coal on the top beam of the transition frame rolls down to cause empty top is prevented, the supporting effect is influenced, and the sinking speed of the gate top plate in the working area of the working face stope is controlled; the side pushing device with a larger stroke is arranged on the top beam, so that the function of preventing the support from falling down is realized, and the working performance of the support is improved.
Drawings
The following detailed description of the utility model will be given with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A-A of FIG. 1;
fig. 3 is a schematic view of a base structure.
In the figure: 1-telescopic beams, 2-front beams, 3-front beam secondary side guard plates, 4-top beams, 5-top beam secondary side guard plates, 6-side push beams, 7-telescopic columns, 8-telescopic sleeves, 9-shield beams, 10-large tail beams, 11-small tail beams, 12-bases, 13-push rods, 14-hydraulic systems, 15-upright columns, 16-telescopic jacks, 17-tail beam jacks, 18-side push jacks, 19-shield beam jacks, 20-front beam jacks, 21-push jacks, 22-pull back slide jacks and 23-connectors.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the return airway end support comprises a top beam 4, a base 12, a main hydraulic rod 14 and a hydraulic system, wherein the lower end of the main hydraulic rod 14 is connected with the base 12, the upper end of the main hydraulic rod 14 is connected with the top beam 4, the top beam is controlled to lift through the main hydraulic rod 14, a telescopic sleeve 8 is arranged on the base 12 along the vertical direction, a telescopic column 7 is slidably arranged in the telescopic sleeve 8, and the upper end of the telescopic column 7 is hinged with the top beam 4; the two-stage telescopic rigid beam is formed by the telescopic column 7 and the telescopic sleeve 8, so that the support can form a complete moving whole up and down, the support can move up and down according to a certain linear track, and the support can bear larger horizontal force and lateral force and has stronger torsion resistance.
The front end of the top beam 4 is hinged with a front beam 2, the front end of the front beam 2 is slidably provided with a telescopic beam 1, a telescopic jack 16 is arranged between the telescopic beam 1 and the front beam 2, and the telescopic beam 1 is controlled to extend and retract through the telescopic jack 16. The rear end of the top beam 4 is hinged with a shield beam 9, a big tail beam 10 and a small tail beam 11 in sequence, a front beam jack 20 is arranged between the front beam 2 and the top beam 4, tail beam jacks 17 are arranged between the shield beam 9 and the big tail beam 10 and between the big tail beam 10 and the small tail beam 11, and a shield beam jack 19 is arranged between the shield beam 9 and the base 12.
The front beam 2 and the top beam 4 are respectively hinged with a front beam secondary side guard plate 3 and a top beam secondary side guard plate 5, and the front beam secondary side guard plate 3 and the top beam secondary side guard plate 5 are respectively provided with the same side of the front beam 2 or the top beam 4. The secondary side guard plates are arranged on the front beam and the top beam, so that the problem of the height drop of the top plate at the joint of the transition frame and the end frame is solved, the phenomenon that the top coal on the top beam of the transition frame rolls down to cause empty top is prevented, the supporting effect is influenced, and the sinking speed of the gate top plate in the working area of the working face stope is controlled.
The top beam 4 is provided with a side pushing jack 18, the piston end of the side pushing jack 18 is connected with a side pushing beam 6, and the side pushing beam 6 is positioned on one side of the top beam 4 with the top beam secondary side guard plate 5. The support can prevent falling by arranging the side pushing device with larger stroke on the top beam, and the working performance of the support is improved.
The base 12 is provided with a pushing jack 21, the piston end of the pushing jack 21 is connected with a pushing rod 13, and the front end of the pushing rod 13 is hinged with a connector 23 which can be connected with a front scraper conveyor through a pin shaft. One side of the base 12 is hinged with a pull back jack 22. In operation, the connector 23 is connected to the front scraper conveyor and the pull back jack 22 is connected to the rear scraper conveyor. Along with the forward movement of the working face, the support and the rolling-off prevention of the transition frame roof coal are always kept on the side close to the coal wall through the fixed wide side guard plates, the front beam secondary side guard plates 3 and the top beam secondary side guard plates 5 of all the components, so that the roof connection effect and the roadway safety of the transition frame of the working face are ensured, and the safe and efficient production of the coal mine is realized.
The preferred embodiments of the present utility model have been described in detail, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model, and the various changes are included in the scope of the present utility model.
Claims (6)
1. The utility model provides a return airway end support, includes back timber (4), base (12) and main hydraulic rod (14), and main hydraulic rod (14) lower extreme is connected with base (12), and main hydraulic rod (14) upper end is connected its characterized in that with back timber (4): a telescopic sleeve (8) is arranged on the base (12) along the vertical direction, a telescopic column (7) is arranged in the telescopic sleeve (8) in a sliding manner, and the upper end of the telescopic column (7) is hinged with the top beam (4);
the front end of the top beam (4) is hinged with a front beam (2), the rear end of the top beam (4) is sequentially hinged with a shield beam (9), a big tail beam (10) and a small tail beam (11), the front beam (2) and the top beam (4) are respectively hinged with a front beam secondary side guard plate (3) and a top beam secondary side guard plate (5), and the front beam secondary side guard plate (3) and the top beam secondary side guard plate (5) are respectively provided with the front beam (2) or the same side of the top beam (4).
2. A return air duct end bracket as set forth in claim 1, wherein: a front beam jack (20) is arranged between the front beam (2) and the top beam (4), tail beam jacks (17) are arranged between the shield beam (9) and the big tail beam (10) and between the big tail beam (10) and the small tail beam (11), and a shield beam jack (19) is arranged between the shield beam (9) and the base (12).
3. A return air duct end bracket as set forth in claim 1, wherein: the top beam (4) is provided with a side pushing jack (18), the piston end of the side pushing jack (18) is connected with a side pushing beam (6), and the side pushing beam (6) is positioned on one side of the top beam (4) with the top beam secondary side guard plate (5).
4. A return air duct end bracket as set forth in claim 1, wherein: the front end of the front beam (2) is slidably provided with a telescopic beam (1), and a telescopic jack (16) is arranged between the telescopic beam (1) and the front beam (2).
5. A return air duct end bracket as set forth in claim 1, wherein: the base (12) is provided with a pushing jack (21), the piston end of the pushing jack (21) is connected with a pushing rod (13), and the front end of the pushing rod (13) is hinged with a connector (23) which can be connected with a front scraper conveyor through a pin shaft.
6. A return air duct end bracket as set forth in claim 1, wherein: one side of the base (12) is hinged with a pull back sliding jack (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320828055.6U CN220118159U (en) | 2023-04-14 | 2023-04-14 | Air return tunnel end support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320828055.6U CN220118159U (en) | 2023-04-14 | 2023-04-14 | Air return tunnel end support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220118159U true CN220118159U (en) | 2023-12-01 |
Family
ID=88892720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320828055.6U Active CN220118159U (en) | 2023-04-14 | 2023-04-14 | Air return tunnel end support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220118159U (en) |
-
2023
- 2023-04-14 CN CN202320828055.6U patent/CN220118159U/en active Active
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