CN110080814B - Embedded coupling type self-moving advance support - Google Patents
Embedded coupling type self-moving advance support Download PDFInfo
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- CN110080814B CN110080814B CN201910389613.1A CN201910389613A CN110080814B CN 110080814 B CN110080814 B CN 110080814B CN 201910389613 A CN201910389613 A CN 201910389613A CN 110080814 B CN110080814 B CN 110080814B
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- 230000008878 coupling Effects 0.000 title claims abstract description 18
- 238000010168 coupling process Methods 0.000 title claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 18
- 230000008093 supporting effect Effects 0.000 abstract description 15
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
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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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an embedded coupling type self-moving advance support, which comprises concave top beam T-shaped supports and convex top beam T-shaped supports, wherein the number of the concave top beam T-shaped supports and the convex top beam T-shaped supports are the same; the concave top beam T-shaped frames and the convex top beam T-shaped frames are arranged in a staggered manner, and are connected in an embedded sliding fit manner through top beams; the matched concave top beam T-shaped frame and the convex top beam T-shaped frame are provided with a driving device at intervals for driving the concave top beam T-shaped frame or the convex top beam T-shaped frame to move forwards and backwards. The invention is beneficial to popularization and application. The invention solves the problems of difficult withdrawal, low pushing speed, poor supporting effect, high labor intensity, more workers and poor safety of single hydraulic supporting columns, thereby greatly improving the reliability and the safety of two-lane advanced supporting, improving the pushing speed of a working face, reducing the production cost and achieving the purposes of safe, efficient and rapid pushing of the working face.
Description
Technical Field
The invention relates to the technical field of coal mine working face two-lane support, in particular to an embedded coupling type self-moving advance support.
Background
In order to ensure coal mining safety of a coal mine, a hydraulic support with mature technology can be selected for effectively supporting a top plate, two lanes of the working surface are not available for mature supporting technology due to the restriction of various factors, and advanced supporting with the length of not less than 20m is required for the two lanes of the working surface according to the rules of coal mine safety regulations. In order to solve the problem of supporting two lanes on a working face, although some advanced supports are developed and produced by some factories in China for popularization and use in the last few years, the advanced supports have higher requirements on the height, width and coal seam spacing of the lanes, are only suitable for large-scale coal mines in the north, and are not suitable for small-scale, medium-thin coal mines in the south. At present, two supports of a fully mechanized mining face of a small and medium-sized coal mine in the south are basically supported by using single hydraulic supports. There are a number of disadvantages to single hydraulic prop bracing:
1. The strut is difficult to retract: because the single hydraulic prop base is smaller, the base is often drilled after the prop is stressed in use, and the prop is difficult to retract.
2. The supporting effect is poor: because the single prop supports the roadway roof at intervals, and the working surface is poor in condition and operation, the roof is unevenly stressed and the supporting effect is poor.
3. The propulsion speed is low: the single hydraulic prop is used for supporting the roof, and a cyclic supporting process of 'supporting-lowering prop withdrawing-advancing-supporting' is needed for the two roadways, and the manual cycle is slower due to the difficulty in lowering prop withdrawing, so that the pushing speed of the working face is slow, and the requirements of high yield, high efficiency and quick pushing are not met.
4. The labor intensity is high: because the single hydraulic prop is frequently supported, retracted and moved, manual operation can be only adopted, and the labor intensity of workers is high.
5. The labor is more: the two-lane support process is complex in circulation, so that a large number of workers are used on a working face, and the support is damaged greatly, so that the coal mining cost is high.
6. The safety is poor: because of reasons such as roof pressure or operation, often cause the pillar to crush, fall post withdrawal difficulty, in order to retrieve the pillar, can only take the hard winch of using of pressure to pull back the post, easily cause personnel's injury, lead to even roof collapse accident.
Disclosure of Invention
The invention aims to provide an embedded coupling type self-moving advanced support, which aims to solve the problems that when single hydraulic support is used for roof support and pushing, a cyclic support process of supporting, lowering, retracting, advancing and supporting is needed to be adopted for two lanes, and the support is difficult to lower, the manual cycle is slower, so that the pushing speed of a working surface is low, and the requirements of high yield, high efficiency and quick pushing cannot be met.
The invention adopts the technical scheme that: the embedded coupling type self-moving advanced support is characterized by comprising concave top beam T-shaped supports and convex top beam T-shaped supports, wherein the number of the concave top beam T-shaped supports and the convex top beam T-shaped supports are the same; the concave top beam T-shaped frames and the convex top beam T-shaped frames are arranged in a staggered manner, and are connected in an embedded sliding fit manner through top beams; the matched concave top beam T-shaped frame and the convex top beam T-shaped frame are provided with a driving device at intervals for driving the concave top beam T-shaped frame or the convex top beam T-shaped frame to move forwards and backwards.
According to the embedded coupling type self-moving advanced support, the number of the concave top beam T-shaped supports and the number of the convex top beam T-shaped supports are 2 or 4.
According to the embedded coupling type self-moving advanced support, two driving devices are arranged between the adjacent concave top beam T-shaped support and the convex top beam T-shaped support, and the two driving devices are respectively arranged at the upper part and the lower part of the concave top beam T-shaped support or the convex top beam T-shaped support.
According to the embedded coupling type self-moving advance support, the driving device is a push-pull oil cylinder or an air cylinder.
According to the embedded coupling type self-moving advanced support, the fixed end and the output end of the push-pull oil cylinder are respectively connected with the concave top beam T-shaped support and the convex top beam T-shaped support.
According to the embedded coupling type self-moving advanced support, the convex top beam T-shaped support and the concave top beam T-shaped support both comprise a column nest base and a column cylinder positioned on the column nest base; the upright post oil cylinder is embedded into the column nest base and is fixedly connected with the column nest base through a connecting pin shaft.
According to the embedded coupling type self-moving advanced support, the convex top beam T-shaped support further comprises a main beam transversely arranged at the upper end of the upright post oil cylinder, and the section of the main beam is rectangular; and two sides of the middle part of the main beam are provided with strip-shaped limiting blocks.
According to the embedded coupling type self-moving advanced support, the concave top beam T-shaped support further comprises a guide groove beam transversely arranged at the upper end of the upright post oil cylinder; the section of the guide groove beam is U-shaped; lower limit bars are arranged on two sides of the lower portion of the guide groove beam, and upper limit bars are arranged on two sides of the upper portion of the guide groove beam.
According to the embedded coupling type self-moving advanced support disclosed by the invention, the main beam extends into the guide groove of the guide groove beam, and the strip-shaped limiting block in the middle of the main beam is positioned between the upper limiting strip and the lower limiting strip in the guide groove.
According to the embedded coupling type self-moving advance support, the lower ends of the main beam and the guide groove beam are respectively provided with a column cap support; the column cap support is connected with the upper end of the column oil cylinder through a connecting pin shaft.
The beneficial effects of the invention are as follows:
The invention realizes uninterrupted support of the two-lane advanced roof of the working face of the thin coal seam in the middle and small coal mine, improves the advanced support effect of the two lanes of the working face, realizes the automatic forward movement of the support through the driving device, solves the problems of difficult withdrawal, low propulsion speed, poor support effect, high labor intensity, more workers and poor safety of the single hydraulic support, further greatly improves the reliability and the safety of the advanced support of the two lanes, improves the propulsion speed of the working face, reduces the production cost, and achieves the aims of safe, efficient and quick propulsion of the working face.
Drawings
FIG. 1 is a schematic diagram of an embedded coupling type self-moving lead bracket according to an embodiment of the present invention;
FIG. 2 is a front view of a male header tee;
FIG. 3 is a left side view of the male header tee;
FIG. 4 is a front view of a concave header tee;
FIG. 5 is a left side view of the concave header tee;
fig. 6 is a schematic view of the mating of a male header with a female header.
In the drawing the view of the figure, 1-first convex top beam T-shaped frame, 2-first concave top beam T-shaped frame, 3-second convex top beam T-shaped frame, 4-second concave top beam T-shaped frame, 5-push-pull oil cylinder, 6-gangue blocking plate, 7-column nest base, 8-column oil cylinder, 9-column cap support, 10-connecting pin shaft, 11-main beam, 12-strip-shaped limiting block, 21-guide groove beam, 22-lower limiting strip and 23-upper limiting strip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; of course, it may be mechanically or electrically connected; in addition, the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1-5, the invention provides an embedded coupling type self-moving advance bracket, which comprises a first convex top beam T-shaped bracket 1, a first concave top beam T-shaped bracket 2, a second convex top beam T-shaped bracket 3 and a second concave top beam T-shaped bracket 4 which are sequentially arranged; the first convex type top beam T-shaped frame 1, the first concave type top beam T-shaped frame 2, the second convex type top beam T-shaped frame 3 and the second concave type top beam T-shaped frame 4 are arranged in a staggered manner, and the first convex type top beam T-shaped frame 1 and the second convex type top beam T-shaped frame 3 are connected with the first concave type top beam T-shaped frame 2 and the second concave type top beam T-shaped frame 4 in an embedded sliding fit manner; a driving device for driving the first convex top beam T-shaped frame 1 or the first concave top beam T-shaped frame 2 to move forwards and backwards is arranged between the first convex top beam T-shaped frame 1 and the first concave top beam T-shaped frame 2; a driving device for driving the second convex top beam T-shaped frame 3 or the second concave top beam T-shaped frame 4 to move forwards and backwards is arranged between the second convex top beam T-shaped frame 3 and the second concave top beam T-shaped frame 4.
The two driving devices are respectively arranged between the first convex top beam T-shaped frame 1 and the first concave top beam T-shaped frame 2 and between the second convex top beam T-shaped frame 3 and the second concave top beam T-shaped frame 4, and the two driving devices are respectively arranged at the upper part and the lower part of the concave top beam T-shaped frame or the convex top beam T-shaped frame; the driving device is a push-pull oil cylinder 5 or an air cylinder.
The fixed end and the output end of the push-pull oil cylinder 5 are respectively connected with the concave top beam T-shaped frame and the convex top beam T-shaped frame.
The first convex top beam T-shaped frame 1, the first concave top beam T-shaped frame 2, the second convex top beam T-shaped frame 3 and the second concave top beam T-shaped frame 4 all comprise a column nest base 7 and a column cylinder 8 positioned on the column nest base 7; the upright post oil cylinder 8 is embedded into the column nest base 7, and the upright post oil cylinder 8 is fixedly connected with the column nest base 7 through a connecting pin shaft 10.
The first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3 also comprise main beams 11 transversely arranged at the upper end of the upright post oil cylinder 8, and the cross sections of the main beams 11 are rectangular; two sides of the middle part of the main beam 11 are provided with strip-shaped limiting blocks 12.
The first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 also comprise guide groove beams 21 which are transversely arranged at the upper end of the upright post oil cylinder 8; the section of the guide groove beam 21 is U-shaped; lower limit bars 22 are arranged on two sides of the lower portion of the guide groove beam 21, and upper limit bars 23 are arranged on two sides of the upper portion of the guide groove beam 21.
The main beam 11 extends into a guide groove of the guide groove beam 21, and a strip-shaped limiting block 12 in the middle of the main beam 11 is positioned between an upper limiting strip 23 and a lower limiting strip 22 in the guide groove; the main beam 11 is in contact fit connection with the two lower limit strips 22; the main beam 11 is in contact fit connection with the two upper limit strips 23, and the upper end of the main beam 11 extends out of the guide groove to be level with the upper end of the guide groove beam 21; the lower ends of the main beam 11 and the guide groove beam 21 are respectively provided with a column cap support 9; the column cap support 9 is connected with the upper end of the column cylinder 8 through a connecting pin shaft 10.
A gangue blocking plate 6 is arranged on one side of the second concave top beam T-shaped frame 4 far away from the second convex top beam T-shaped frame 3 and is used for blocking gangue in ores.
Working principle:
when the bracket needs to move forwards, firstly, the first concave top beam T-shaped bracket 2 and the second concave top beam T-shaped bracket 4 are kept still, the upright post cylinders 8 of the first convex top beam T-shaped bracket 1 and the second convex top beam T-shaped bracket 3 are retracted by controlling the operation valve, the strip limiting blocks 12 of the first convex top beam T-shaped bracket 1 and the second convex top beam T-shaped bracket 3 are lowered to be contacted with the lower limiting blocks of the first concave top beam T-shaped bracket 2 and the second concave top beam T-shaped bracket 4, the upright post cylinders 8 are continuously recovered until the upright post nest bases 7 of the first convex top beam T-shaped bracket 1 and the second convex top beam T-shaped bracket 3 leave the bottom plate for a certain height, at the moment, the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3 are hung on top beams of the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4, then the upper push-pull oil cylinder 5 and the lower push-pull oil cylinder 5 extend to drive the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3 to move forwards by a step distance (600 mm) to stop, and then the upright columns of the upright column oil cylinders 8 of the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3 extend until the support top beams and the column nest base 7 are contacted with the roadway roof and the roadway floor and reach a certain initial supporting force to stop; the second step, firstly, the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3 are kept still, the upright post cylinders 8 of the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 are retracted by controlling the operation valves, the upper limit plates 23 of the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 are lowered to be contacted with the strip limit blocks 12 of the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3, the upright post cylinders 8 are continuously recovered until the upright post bases 7 of the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 leave the ground for a certain height, at the moment, the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 are hung on top beams of the first convex top beam T-shaped frame 1 and the second convex top beam T-shaped frame 3, then the upper push-pull oil cylinder 5 and the lower push-pull oil cylinder 5 are retracted to drive the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 to move forwards by a step distance (600 mm) to stop, and then the upright post oil cylinders 8 of the first concave top beam T-shaped frame 2 and the second concave top beam T-shaped frame 4 are extended until the top beams and the base of the bracket are contacted with the roadway roof and the roadway floor and reach a certain initial supporting force, and then stop, thus the supporting-self-moving-supporting process of the bracket is completed once; and then the operation is repeated in a circulating way, so that the circulating support of the tunnel roof is achieved.
The above embodiments are two male header T-frames and two female header T-frames; it may also be four male and four female header tee, but typically no more than four male and four female header tee.
Finally, it should be noted that: the above embodiments are merely preferred embodiments of the present invention to illustrate the technical solution of the present invention, and are not meant to limit the scope of the present invention; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the scope of the invention.
Claims (6)
1. An embedded coupling type self-moving advanced support is characterized in that: the device comprises concave top beam T-shaped frames and convex top beam T-shaped frames, wherein the number of the concave top beam T-shaped frames and the convex top beam T-shaped frames are the same; the concave top beam T-shaped frames and the convex top beam T-shaped frames are arranged in a staggered manner, and are connected in an embedded sliding fit manner through top beams; the convex top beam T-shaped frame also comprises a main beam transversely arranged at the upper end of the upright post oil cylinder, and the section of the main beam is rectangular; strip-shaped limiting blocks are arranged on two sides of the middle part of the main beam; the concave top beam T-shaped frame also comprises a guide groove beam transversely arranged at the upper end of the upright post oil cylinder; the section of the guide groove beam is U-shaped; lower limit strips are arranged on two sides of the lower part of the guide groove beam, and upper limit strips are arranged on two sides of the upper part of the guide groove beam; the main beam extends into the guide groove of the guide groove beam, and the strip-shaped limiting block in the middle of the main beam is positioned between the upper limiting strip and the lower limiting strip in the guide groove; the matched concave top beam T-shaped frame and the convex top beam T-shaped frame are provided with a driving device at intervals for driving the concave top beam T-shaped frame or the convex top beam T-shaped frame to move forwards and backwards.
2. The embedded coupled self-advancing lead frame of claim 1, wherein: the number of the concave top beam T-shaped frames and the number of the convex top beam T-shaped frames are even.
3. The embedded coupled self-advancing lead frame of claim 1, wherein: two driving devices are arranged between the adjacent concave top beam T-shaped frames and the convex top beam T-shaped frames, and the two driving devices are respectively arranged at the upper part and the lower part of the concave top beam T-shaped frames or the convex top beam T-shaped frames.
4. The embedded coupled self-advancing lead frame of claim 1, wherein: the driving device is a push-pull oil cylinder or an air cylinder.
5. The embedded coupled self-advancing lead frame of claim 4, wherein: the fixed end and the output end of the push-pull oil cylinder are respectively connected with the concave top beam T-shaped frame and the convex top beam T-shaped frame.
6. The embedded coupled self-advancing lead frame of claim 1, wherein: the lower ends of the main beam and the guide groove beam are respectively provided with a column cap support; the column cap support is connected with the upper end of the column oil cylinder through a connecting pin shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821728553 | 2018-10-24 | ||
| CN2018217285539 | 2018-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110080814A CN110080814A (en) | 2019-08-02 |
| CN110080814B true CN110080814B (en) | 2024-06-21 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920667155.9U Expired - Fee Related CN210164495U (en) | 2018-10-24 | 2019-05-10 | Embedded coupling type self-moving forepoling |
| CN201910389613.1A Active CN110080814B (en) | 2018-10-24 | 2019-05-10 | Embedded coupling type self-moving advance support |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920667155.9U Expired - Fee Related CN210164495U (en) | 2018-10-24 | 2019-05-10 | Embedded coupling type self-moving forepoling |
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| CN (2) | CN210164495U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210164495U (en) * | 2018-10-24 | 2020-03-20 | 四川芙蓉集团宜宾嘉业机械制造有限责任公司 | Embedded coupling type self-moving forepoling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042024A (en) * | 2010-11-13 | 2011-05-04 | 枣庄矿业（集团）有限责任公司第二机械厂 | Advance support bracket for sliding top beam |
| CN207177940U (en) * | 2017-08-11 | 2018-04-03 | 新疆龟兹矿业有限公司 | A kind of self-advancing support boom hoisting |
| CN210164495U (en) * | 2018-10-24 | 2020-03-20 | 四川芙蓉集团宜宾嘉业机械制造有限责任公司 | Embedded coupling type self-moving forepoling |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481566B (en) * | 2014-09-18 | 2017-05-17 | 中国煤炭科工集团太原研究院有限公司 | Fully-mechanized excavation face automatic anchoring and sliding rail type walking temporary support |
| CN205047241U (en) * | 2015-09-28 | 2016-02-24 | 沈阳天安科技股份有限公司 | Tunnel quick travel formula advance support support |
| CN105221175A (en) * | 2015-10-12 | 2016-01-06 | 山东科技大学 | A kind of automatic moving type end hydraulic support based on parallel institution and application thereof |
| CN206554965U (en) * | 2017-03-06 | 2017-10-13 | 河南永华能源有限公司 | Fully-mechanized mining working automatic moving type lifts canopy |
| CN207377586U (en) * | 2017-10-18 | 2018-05-18 | 沈阳天安科技股份有限公司 | Stope drift active workings lateral support formula advance support rack |
-
2019
- 2019-05-10 CN CN201920667155.9U patent/CN210164495U/en not_active Expired - Fee Related
- 2019-05-10 CN CN201910389613.1A patent/CN110080814B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042024A (en) * | 2010-11-13 | 2011-05-04 | 枣庄矿业（集团）有限责任公司第二机械厂 | Advance support bracket for sliding top beam |
| CN207177940U (en) * | 2017-08-11 | 2018-04-03 | 新疆龟兹矿业有限公司 | A kind of self-advancing support boom hoisting |
| CN210164495U (en) * | 2018-10-24 | 2020-03-20 | 四川芙蓉集团宜宾嘉业机械制造有限责任公司 | Embedded coupling type self-moving forepoling |
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| Publication number | Publication date |
|---|---|
| CN210164495U (en) | 2020-03-20 |
| CN110080814A (en) | 2019-08-02 |
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