CN110863848A - Beam-free end distance telescopic side protection mechanism - Google Patents
Beam-free end distance telescopic side protection mechanism Download PDFInfo
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- CN110863848A CN110863848A CN201911039674.1A CN201911039674A CN110863848A CN 110863848 A CN110863848 A CN 110863848A CN 201911039674 A CN201911039674 A CN 201911039674A CN 110863848 A CN110863848 A CN 110863848A
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- telescopic
- side protection
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- plate
- distance
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- 125000006239 protecting group Chemical group 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 22
- 238000005520 cutting process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a beam-free end distance telescopic side protection mechanism, belonging to the technical field of underground hydraulic support equipment; the roof fall problem caused by a soft coal seam when the empty roof distance meets is solved; the technical scheme is as follows: a flexible side protection mechanism without beam end distance comprises a side protection plate, a top beam, a shovel plate and a side protection jack, wherein a flexible mechanism is arranged inside the front end of the top beam, the front end of the flexible mechanism is fixedly connected with the shovel plate, one end of the side protection plate is hinged with the lower part of the front end of the flexible mechanism, and the side protection jack is arranged between the side protection plate and the top beam, so that the side protection plate can move around the hinged point of the lower part of the front end of the flexible mechanism; the invention increases the effective supporting length of the front end of the top beam, eliminates the empty top distance, realizes zero-clearance supporting of the top plate by the support, and also has the advantages of integral and split structures of the telescopic beam and the side protection plate.
Description
Technical Field
The invention discloses a beam-free end distance telescopic side protection mechanism, and belongs to the technical field of underground hydraulic support equipment.
Background
As shown in fig. 1, the traditional hydraulic support with a telescopic side protection mechanism is structurally characterized in that a telescopic beam 2 is nested at the front end of a top beam 3, the movement of the telescopic beam 2 is controlled by a supporting plate mechanism, a side protection plate 1 is hinged to the front end of the telescopic beam 2 and moves along with the telescopic beam 2, the length of the telescopic beam extending out is short when the support is arranged in the above way, and meanwhile, in the matching process of three machines, the support is pushed to slide and then coal is mined, and a certain beam end distance can be reserved considering that a coal mining machine does not cut the top beam in the coal cutting process. However, in the underground coal mining process, due to the existence of the beam end distance, a certain empty roof distance can occur after the coal mining machine cuts coal, and in the process, if a soft coal seam is encountered, the support is not timely, and roof caving accidents can occur.
Disclosure of Invention
The invention discloses a beam-free end distance telescopic side protection mechanism, overcomes the defects in the prior art, and solves the problem of roof fall caused by a loose and soft coal seam in an empty roof distance.
In order to solve the technical problems, the invention adopts the technical scheme that: a flexible group's mechanism of protecting of no girder end distance, includes protecting group's board, back timber, shovel board and protects group's jack, sets up a telescopic machanism in the front end of back timber, and telescopic machanism's front end and shovel board are fixed to be continuous, and the one end of protecting group's board is articulated with telescopic machanism's front end lower part, protects group's jack setting and protects between group's board and back timber, makes and protects group's board and can wind telescopic machanism's front end lower part pin joint motion.
Preferably, the telescopic mechanism comprises a primary telescopic beam, the primary telescopic beam is nested in the top beam, the shovel plate is arranged at the front end of the primary telescopic beam, and an outer telescopic jack is arranged between the lower end of the primary telescopic beam and the lower end of the top beam.
Preferably, the telescopic mechanism further comprises a second-stage telescopic beam, the first-stage telescopic beam is nested in the second-stage telescopic beam, the second-stage telescopic beam is nested in the top beam, and an inner telescopic jack is arranged in the second-stage telescopic beam.
Preferably, the base of the inner telescopic jack and the front side of the primary telescopic beam are both provided with a first pin hole, and a first pin passes through the first pin hole for fixing; the rod head of the inner telescopic jack is connected with the guide rod, the guide rod and the rear side of the secondary telescopic beam are provided with second pin holes, and the second pin is fixed through the second pin holes.
Compared with the prior art, the invention has the following beneficial effects.
1. The telescopic mechanism adopts a double-telescopic overlapped structure, and can be supported to the coal wall for supporting in time after the coal cutter cuts coal.
2. The secondary telescopic beam of the telescopic mechanism of the invention moves independently, and the problem of triangular support at the top end of the back of the side guard contacted with the coal wall can be solved.
3. The secondary telescopic beam adopts an embedded telescopic jack form, and the primary telescopic beam adopts an external telescopic jack form, so that the lap joint length of the telescopic beam in the top beam is ensured on the premise of meeting the telescopic length.
4. The side protection plate is hinged to the front end of the first-stage telescopic beam, and can support the coal side along with the forward extension of the first-stage telescopic beam after coal cutting.
5. The shovel plate is arranged at the front end of the primary telescopic beam, and the part which cannot automatically collapse after coal cutting is forced to collapse through the shovel plate.
Drawings
Fig. 1 is a schematic view of a conventional telescopic side protection mechanism.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic diagram of a second embodiment of the present invention in a supporting state.
In the figure, 1-side protection plate, 2-telescopic beam, 3-top beam, 4-shovel plate, 5-primary telescopic beam, 6-first bayonet lock, 7-internal telescopic jack, 8-secondary telescopic beam, 9-external telescopic jack, 10-guide rod, 11-side protection jack and 12-second bayonet lock.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 2, the telescopic side protection mechanism without the beam end distance comprises a side protection plate 1, a top beam 3, a shovel plate 4 and a side protection jack 11, wherein a telescopic mechanism is arranged inside the front end of the top beam 3, the front end of the telescopic mechanism is fixedly connected with the shovel plate 4, one end of the side protection plate 1 is hinged with the lower part of the front end of the telescopic mechanism, and the side protection jack 11 is arranged between the side protection plate 1 and the top beam 3, so that the side protection plate 1 can move around a hinged point of the lower part of the front end of the telescopic mechanism.
In the first embodiment, the telescopic mechanism comprises a primary telescopic beam 5, the primary telescopic beam 5 is nested in the top beam 3, the shovel plate 4 is arranged at the front end of the primary telescopic beam 5, and an outer telescopic jack 9 is arranged between the lower end of the primary telescopic beam 5 and the lower end of the top beam 3.
The second embodiment differs in that: the telescopic mechanism further comprises a secondary telescopic beam 8, the primary telescopic beam 5 is nested in the secondary telescopic beam 8, the secondary telescopic beam 8 is nested in the top beam 3, and an inner telescopic jack 7 is arranged in the secondary telescopic beam 8. Thus, a double-layer telescopic structure is formed, the effective supporting length of the front end of the top beam 3 can be increased, the idle top distance is eliminated, zero-clearance supporting of the hydraulic support to the top plate is realized, and the problems of roof fall and the like caused by the idle top distance are fundamentally solved. The side protection plate 1 can extend forwards along with the primary telescopic beam 5 to support the coal side, and has the advantages of two structures, namely the integral structure and the split structure of the telescopic beam and the side protection plate.
The fixing mode of the inner telescopic jack 7 on the second-stage telescopic beam 8 is as follows: the base of the inner telescopic jack 7 and the front side of the primary telescopic beam 5 are both provided with a first pin hole, and the first pin 6 passes through the first pin hole for fixing; the rod head of the inner telescopic jack 7 is connected with a guide rod 10, the guide rod 10 and the rear side of the secondary telescopic beam 8 are provided with second pin holes, and a second pin 12 penetrates through the second pin holes to be fixed.
As shown in FIG. 3, the steps of the second embodiment of the present invention during the preparation and operation before the operation are as follows:
firstly, connecting an inner telescopic jack 7 and a guide rod 10, after the connection is finished, integrally embedding the inner telescopic jack into a primary telescopic beam 5, and hinging and fixing the inner telescopic jack and the guide rod through a first bayonet 6;
the second-stage telescopic beam 5 and the first-stage telescopic beam 5 are embedded into the second-stage telescopic beam 8, fixed through a second bayonet lock 12 and then integrally sleeved into the front end of the top beam 3;
thirdly, an outer telescopic jack 9 is connected, so that the outer telescopic jack 9 can drive a secondary telescopic beam 8 to move, and an inner telescopic jack stretches to drive a primary telescopic beam 5 to move;
fourthly, the side protection plate 1 is hinged below the front end of the first-stage telescopic beam 5, an included angle is formed between the side protection jack 11 and the outer telescopic jack 9, the side protection jack 11 drives the side protection plate 1 to move, and the side protection plate 1 can be retracted below the top beam 3 and also can be opened to a position vertical to the top beam 3;
fifthly, when the coal cutting device works, the hydraulic support firstly pushes away coal to be cut, controls the telescopic mechanism after the coal is cut, supports in time, utilizes the shovel plate 4 to shovel a coal seam which does not automatically collapse, forces the coal seam to collapse, then pulls the frame, and repeats actions.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (4)
1. The utility model provides a flexible group's mechanism that protects of no beam end distance which characterized in that: including protecting group's board (1), back timber (3), shovel board (4) and protecting group's jack (11), the front end inside of back timber (3) sets up a telescopic machanism, and telescopic machanism's front end and shovel board (4) are fixed to be linked to each other, and the one end of protecting group's board (1) is articulated with telescopic machanism's front end lower part, protects group's jack (11) setting and is protecting between group's board (1) and back timber (3), makes and protects group's board (1) can be around telescopic machanism's front end lower part pin joint motion.
2. The beamless end distance telescopic slope protection mechanism according to claim 1, wherein: the telescopic mechanism comprises a first-stage telescopic beam (5), the first-stage telescopic beam (5) is nested in the top beam (3), the shovel plate (4) is arranged at the front end of the first-stage telescopic beam (5), and an outer telescopic jack (9) is arranged between the lower end of the first-stage telescopic beam (5) and the lower end of the top beam (3).
3. The beamless end distance telescopic slope protection mechanism according to claim 2, wherein: the telescopic mechanism further comprises a secondary telescopic beam (8), the primary telescopic beam (5) is nested in the secondary telescopic beam (8), the secondary telescopic beam (8) is nested in the top beam (3), and an inner telescopic jack (7) is arranged in the secondary telescopic beam (8).
4. The beamless end distance telescopic slope protection mechanism according to claim 3, wherein: the base of the inner telescopic jack (7) and the front side of the primary telescopic beam (5) are provided with first pin holes, and the first pin (6) penetrates through the first pin holes to be fixed; the rod head of the inner telescopic jack (7) is connected with a guide rod (10), the guide rod (10) and the rear side of the secondary telescopic beam (8) are provided with second pin holes, and a second pin (12) penetrates through the second pin holes to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039674.1A CN110863848A (en) | 2019-10-29 | 2019-10-29 | Beam-free end distance telescopic side protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039674.1A CN110863848A (en) | 2019-10-29 | 2019-10-29 | Beam-free end distance telescopic side protection mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN110863848A true CN110863848A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911039674.1A Pending CN110863848A (en) | 2019-10-29 | 2019-10-29 | Beam-free end distance telescopic side protection mechanism |
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| CN (1) | CN110863848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046167A (en) * | 2021-11-10 | 2022-02-15 | 晋能控股装备制造集团金鼎山西煤机有限责任公司 | Optimal design method of hydraulic support based on beamless end distance high-strength side wall |
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| CN101418694A (en) * | 2008-11-19 | 2009-04-29 | 中煤北京煤矿机械有限责任公司 | Composite slope guarding hydraulic support and use thereof |
| CN202745933U (en) * | 2012-03-30 | 2013-02-20 | 郑州四维机电设备制造有限公司 | Four-column double swing beam type gangue-filled hydraulic support |
| CN104847391A (en) * | 2015-05-26 | 2015-08-19 | 徐州神安矿山机械科技有限公司 | Plate type hydraulic support with integral top beam |
| PL225225B1 (en) * | 2014-01-13 | 2017-03-31 | Volen Spółka Akcyjna | Slidable supporting-and-withdrawing device |
| CN206174981U (en) * | 2016-11-25 | 2017-05-17 | 安徽理工大学 | Hydraulic support |
| CN206386143U (en) * | 2016-12-13 | 2017-08-08 | 西安重装铜川煤矿机械有限公司 | A kind of mining face end support stretches and side protecting mechanism whole slide device |
| RU173403U1 (en) * | 2017-04-27 | 2017-08-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | TELESCOPIC OVERLAP SECTION |
| CN207740027U (en) * | 2017-12-29 | 2018-08-17 | 山东东山新驿煤矿有限公司 | A kind of hydraulic support with the preceding telescopic top beam of spy |
| CN208153042U (en) * | 2018-04-20 | 2018-11-27 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of automatically retractable formula filling bracket |
-
2019
- 2019-10-29 CN CN201911039674.1A patent/CN110863848A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418694A (en) * | 2008-11-19 | 2009-04-29 | 中煤北京煤矿机械有限责任公司 | Composite slope guarding hydraulic support and use thereof |
| CN202745933U (en) * | 2012-03-30 | 2013-02-20 | 郑州四维机电设备制造有限公司 | Four-column double swing beam type gangue-filled hydraulic support |
| PL225225B1 (en) * | 2014-01-13 | 2017-03-31 | Volen Spółka Akcyjna | Slidable supporting-and-withdrawing device |
| CN104847391A (en) * | 2015-05-26 | 2015-08-19 | 徐州神安矿山机械科技有限公司 | Plate type hydraulic support with integral top beam |
| CN206174981U (en) * | 2016-11-25 | 2017-05-17 | 安徽理工大学 | Hydraulic support |
| CN206386143U (en) * | 2016-12-13 | 2017-08-08 | 西安重装铜川煤矿机械有限公司 | A kind of mining face end support stretches and side protecting mechanism whole slide device |
| RU173403U1 (en) * | 2017-04-27 | 2017-08-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | TELESCOPIC OVERLAP SECTION |
| CN207740027U (en) * | 2017-12-29 | 2018-08-17 | 山东东山新驿煤矿有限公司 | A kind of hydraulic support with the preceding telescopic top beam of spy |
| CN208153042U (en) * | 2018-04-20 | 2018-11-27 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of automatically retractable formula filling bracket |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046167A (en) * | 2021-11-10 | 2022-02-15 | 晋能控股装备制造集团金鼎山西煤机有限责任公司 | Optimal design method of hydraulic support based on beamless end distance high-strength side wall |
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Application publication date: 20200306 |
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