CN111173545B - Resetting device for two-piece single hydraulic prop and installation method thereof - Google Patents
Resetting device for two-piece single hydraulic prop and installation method thereof Download PDFInfo
- Publication number
- CN111173545B CN111173545B CN202010154390.3A CN202010154390A CN111173545B CN 111173545 B CN111173545 B CN 111173545B CN 202010154390 A CN202010154390 A CN 202010154390A CN 111173545 B CN111173545 B CN 111173545B
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- Prior art keywords
- connecting lug
- movable
- ring
- bottom cover
- liquid control
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Actuator (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a resetting device for a two-piece single hydraulic prop and an installation method thereof, wherein a liquid control bottom cover of a movable prop is movable, the device comprises an upper connecting lug fixed below the liquid control bottom cover, a lower connecting lug fixed on a bottom sealing base, an upper connecting ring fixed below a top sealing top cover at the upper part of an inner cavity of the movable prop, and a lower connecting ring fixed on the liquid control bottom cover, wherein an elastic piece arranged vertically is arranged between the upper connecting ring and the lower connecting ring, the upper connecting lug and the lower connecting lug are used for mutually matching to fix the lower end of the elastic piece on the bottom sealing base, and the elastic piece is used for providing tension for the movable prop so as to enable the movable prop to reset rapidly; the invention solves the problem of slow restoration of the movable column of the two-piece single column by local improvement on the premise of not changing the overall performance of the column; by utilizing the gravity principle, through rotating the direction of the support column, the bolt is inserted into the through holes of the upper connecting lug and the lower connecting lug under the action of gravity; the elastic piece can be detached and installed underground, so that the support column is convenient to maintain.
Description
[ Field of technology ]
The invention belongs to the field of coal mine equipment, and particularly relates to a resetting device for a two-piece single hydraulic prop and an installation method thereof.
[ Background Art ]
The mining single hydraulic prop is an external supply constant-resistance single hydraulic prop, can be matched with various top beams, and can also be used as a main prop. The support plate can be used for supporting the top plate of the blasting mining working face and can also be used for other temporary supports. The hydraulic pressure is used to create a working resistance and to achieve a single collapsible column of lifting and unloading.
The existing two-piece single prop (patent number ZL 2018 2 1896815.2) cannot be provided with an internal spring because of the welding mode of the prop outer cylinder and the base, so that the application range of the two-piece single prop is further expanded, the adaptability of the product is improved, the existing two-piece single prop has no return spring, the application range is small, the dismantling speed is low, and the assembly and maintenance are slow.
[ Invention ]
The invention aims to provide a resetting device for a two-piece single hydraulic prop and an installation method thereof, so as to solve the problem of slow resetting of the existing two-piece single hydraulic prop.
The invention adopts the following technical scheme: the utility model provides a resetting means for two-piece monomer hydraulic prop, the accuse liquid bottom of post is movable, the device is including being fixed in the last engaging lug under the accuse liquid bottom, be fixed in the lower engaging lug on the back cover base, be fixed in the last go-between of post inner chamber upper portion back cover top cap down, be fixed in the lower go-between on the accuse liquid bottom cover, install the elastic component of vertical setting between go-between and the lower go-between, go-between is used for mutually supporting with the lower extreme of elastic component on the back cover base with lower engaging lug, the elastic component is used for providing pulling force for the post that moves about, make it reset fast.
Further, the lower connecting ring comprises an upper fixing ring and a lower fixing ring which are arranged up and down, the lower end of the lower fixing ring is fixedly connected with the liquid control bottom cover, the upper end of the lower fixing ring is connected with the upper fixing ring through bolts, and the upper fixing ring is used for installing the lower end of the elastic piece.
Further, through holes are formed in the upper connecting lug and the lower connecting lug, and the two through holes are used for enabling bolts to pass through horizontally in sequence and limiting the upper connecting lug.
Further, still fixedly connected with guide block under the accuse liquid bottom, the guide slot has been seted up in the horizontal run-through on the guide block, and the guide slot sets up with the through-hole of last connecting ear is coaxial, and the guide slot is used for holding the bolt, and the bolt is used for the horizontal direction to insert the through-hole of last connecting ear and lower connecting ear in proper order along the guide slot.
Further, the bolt is strip, and the level sets up between back cover base and accuse liquid bottom, and the bolt is used for inserting the through-hole of last connecting ear and lower connecting ear along the guide way to go on spacing to last connecting ear.
Further, a limiting ring is arranged in the movable column and around the inner wall of the movable column in a circle, the limiting ring is fixedly connected with the inner wall of the movable column, and the limiting ring is used for limiting the liquid control bottom cover, so that the liquid control bottom cover is positioned below the limiting ring.
Further, a mark is arranged on the outer wall of the cylinder barrel and used for observing whether the through holes of the upper connecting lug and the lower connecting lug are aligned or not.
A method of installing a reset device for a two-piece single hydraulic prop, comprising the steps of:
the upper end of the elastic piece is hung on the upper connecting ring,
The lower end of the elastic piece is hung on the lower connecting ring,
The liquid control bottom cover of the movable column is pulled to the lower part of the limiting ring, so that the limiting ring clamps the liquid control bottom cover,
The movable column is integrally inserted into the cylinder barrel,
The movable column is rotated according to the mark on the outer wall of the cylinder barrel so that the through holes of the upper connecting lug and the lower connecting lug are aligned,
The single body is continuously poured to a horizontal state, so that the bolt is sequentially inserted into the through holes of the upper connecting lug and the lower connecting lug along the guide groove through dead weight.
The beneficial effects of the invention are as follows: on the premise of not changing the overall performance of the support column, the problem of slow restoration of the movable column of the two-piece single support column is solved by local improvement; by utilizing the gravity principle, through rotating the direction of the support column, the bolt is inserted into the through holes of the upper connecting lug and the lower connecting lug under the action of gravity; the elastic piece can be detached and installed underground, so that the support column is convenient to maintain.
[ Description of the drawings ]
FIG. 1 is a schematic view of the present invention installed in a post;
FIG. 2 is a partial schematic view of a bottom cover for controlling liquid in the present invention;
Fig. 3 is a schematic view of a portion of a back cover chassis according to the present invention.
Wherein: 1. a cylinder; 2. a bottom sealing base; 3. multifunctional clamp; 4. a movable column; 5. sealing the top cover; 6. a liquid control bottom cover; 7. column head; 8. a dustproof telescopic sleeve; 9. an upper connecting ring; 10. an elastic member; 11. a lower connecting ring; 12. a limiting ring; 13. a plug pin; 14. the upper connecting lug; 15. a lower connecting ear; 16. an upper fixing ring; 17. a lower fixing ring; 18 guide blocks.
[ Detailed description ] of the invention
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses a resetting device for a two-piece single hydraulic prop, which is based on the two-piece single hydraulic prop and improves the two-piece single hydraulic prop, and the improvement point is that a liquid control bottom cover 6 of a movable prop 4 is movable, the two-piece single hydraulic prop has the same structure as an injector, and the basic function of the single prop can be realized after the movable prop 4 is inserted into a cylinder barrel 1. Wherein, the cylinder body bears the functions of the original cylinder, the handle body and the three-purpose valve, and the movable column 4 body bears the functions of lifting, guiding, dust prevention, limiting, resetting and the like.
The two-piece single hydraulic prop main part consists of two parts of a cylinder body and a movable cylinder body. The cylinder body is composed of a cylinder barrel 1, a bottom sealing base 2 and a multifunctional clamp 3. The lower opening of the cylinder barrel 1 is welded with a bottom sealing base 2, and the upper opening is welded with a multifunctional clamp 3; the multifunctional clamp 3 consists of a clamp main body, a dust cover lower opening connection clamping groove and a three-purpose valve, and the clamp main body comprises a Y-shaped seal.
The movable column body consists of a movable column 4, a top capping cover 5, a liquid control bottom cover 6 and a column head 7. The upper part of the inner cavity of the movable column 4 is welded with the capping top cover 5, the lower part of the inner cavity of the movable column 4 is provided with the liquid control bottom cover 6, and the liquid control bottom cover 6 and the movable column 4 are not connected, namely the liquid control bottom cover 6 and the movable column 4 are separately arranged and have no connection relation, and are required to be connected through the device in the invention.
The column head 7 is fixed on the movable column 4 by a spring pin, and a dustproof cover upper opening connecting clamping groove is arranged on the column head 7; the exposed part of the movable column 4 is provided with a dust-proof telescopic sleeve 8, and the dust-proof telescopic sleeve 8 stretches along with the lifting of the movable column 4; the upper opening clamp of the dustproof telescopic sleeve 8 is connected with the upper opening connection clamping groove of the dustproof sleeve, and the lower opening clamp of the dustproof telescopic sleeve 8 is connected with the lower opening connection clamping groove of the dustproof sleeve.
The dustproof telescopic sleeve 8 is also a limiting device for lifting the movable column 4, when the telescopic sleeve is straightened, the movable column 4 is lifted to a limiting position, an operator is reminded that the support column reaches the maximum supporting height, and the support column is too small in specification and must be replaced by a large-specification support column; if the injection is continued again. The dustproof telescopic sleeve 8 breaks, the liquid injection must be stopped, otherwise the plunger 4 may bend or deviate from the cylinder 1.
As shown in fig. 2 and 3, the device in the invention comprises an upper connecting lug 14 fixed under the liquid control bottom cover 6, a lower connecting lug 15 fixed on the bottom sealing base 2, an upper connecting ring 9 fixed under the top sealing cover 5 at the upper part of the inner cavity of the movable column 4 and a lower connecting ring 11 fixed on the liquid control bottom cover 6, wherein an elastic piece 10 arranged vertically is arranged between the upper connecting ring 9 and the lower connecting ring 11, the upper connecting lug 14 and the lower connecting lug 15 are used for mutually matching to fix the lower end of the elastic piece 10 on the bottom sealing base 2, and the elastic piece 10 is used for providing a pulling force for the movable column 4 so as to enable the movable column 4 to reset rapidly. On the premise of not changing the overall performance of the strut, the problem of resetting the movable strut 4 of the two-piece single strut is solved by local improvement.
The lower connecting ring 11 is composed of an upper fixing ring 16 and a lower fixing ring 17 which are arranged up and down, the lower fixing ring 17 is square or rectangular, the lower end of the lower fixing ring 17 is fixedly connected with the liquid control bottom cover 6, the upper end of the lower fixing ring is connected with the upper fixing ring 16 through bolts, and the upper fixing ring 16 is used for installing the lower end of the elastic piece 10. The elastic piece 10 is a special spring or other tools capable of meeting the elastic requirement, and because the elastic piece 10 is easy to rotate in the process of being stretched by the upper connecting ring 9 and the lower connecting ring 11, and the whole movable column 4 needs to be rotated when the device is installed later, the elastic piece 10 is easy to rotate in the process of rotating, and the elasticity of the twisted elastic piece 10 is limited, the elastic piece 10 is provided with two mutually connected fixing rings, namely an upper fixing ring 16 and a lower fixing ring 17, and the upper fixing ring 16 and the lower fixing ring 17 are mutually connected through bolts, namely the upper fixing ring 16 can rotate relative to the lower fixing ring 17, so that when the elastic piece 10 is stressed to rotate, the upper fixing ring 16 can rotate along with the elastic piece 10, the elastic piece 10 is ensured to be in a natural stress state at any moment, and the elasticity of the elastic piece 10 is ensured.
The upper connecting lug 14 and the lower connecting lug 15 are respectively provided with a through hole, and the two through holes are used for allowing the bolt 13 to sequentially pass horizontally and limiting the upper connecting lug 14. Since the movable column 4 needs to move up and down, in order to generate a pulling force on the top of the movable column 4, one end of the elastic member 10 must be fixed on the bottom sealing base 2, so that the lower connecting lug 15 needs to be fixed on the bottom sealing base 2, then the upper connecting lug 14 and the lower connecting lug 15 are mutually matched through the upper connecting lug 14 fixed under the liquid control bottom cover 6, and the upper connecting lug 14 and the lower connecting lug 15 are fixed through the bolts 13 passing through two through holes.
The bolt 13 is strip-shaped and horizontally arranged between the bottom sealing base 2 and the liquid control bottom cover 6, and the bolt 13 is used for extending into through holes of the upper connecting lug 14 and the lower connecting lug 15 along the guide groove by self weight and limiting the upper connecting lug 14.
The lower part of the liquid control bottom cover 6 is fixedly connected with a guide block 18, a guide groove is horizontally penetrated and arranged on the guide block 18, the guide groove is coaxially arranged with the through hole of the upper connecting lug 14, the guide groove is used for accommodating a bolt 13, and the bolt 13 is used for sequentially penetrating through the through holes of the upper connecting lug 14 and the lower connecting lug 15 along the guide groove in the horizontal direction. Since the latch 13 is inserted into the through holes of the upper and lower connection lugs 14 and 15, the latch 13 needs to move along a straight line and then smoothly inserted into the through holes of the upper and lower connection lugs 14 and 15, but the latch 13 is positioned in the cylinder 1, so that a user cannot intuitively see the movement direction, the movement of the latch 13 can be guided by the guide block 18, the movement axis of the latch 13 is prevented from deviating from the axis of the through holes of the upper and lower connection lugs 14 and 15, the latch 13 is ensured to be smoothly inserted into the through holes of the upper and lower connection lugs 14 and 15, and the fixation of the present invention is ensured.
Because the upper connecting lug 14 and the lower connecting lug 15 are both positioned in the cylinder barrel 1, for a user, the upper connecting lug 14 and the lower connecting lug 15 cannot be directly observed through eyes, whether the through holes of the upper connecting lug 14 and the lower connecting lug 15 are aligned cannot be observed, whether the movement route of the bolt 13 is aligned can only be ensured by arranging the guide block 18, and whether the bolt 13 is aligned with the upper connecting lug 14 and the lower connecting lug 15 cannot guide the user to rotate the rotation angle of the movable column 4 cannot be guided, so that a mark is arranged on the outer wall of the cylinder barrel 1, and the mark is used for the user to rotate the movable column 4 according to the mark, so that the through holes of the upper connecting lug 14 and the lower connecting lug 15 are aligned.
A limiting ring 12 is arranged in the movable column 4 around the inner wall of the movable column 4, the limiting ring 12 is positioned at the lower part of the inner cavity of the movable column 4, the limiting ring 12 is fixedly connected with the inner wall of the movable column 4, and the limiting ring 12 is used for limiting the liquid control bottom cover 6, so that the liquid control bottom cover 6 is positioned below the limiting ring 12. Since the bottom cover 6 is movable, the elastic member 10 is stretched continuously during the use of the support column provided with the device of the invention, and the lower connecting ring 11 is fixed on the bottom cover 6, so that if the elastic member 10 is required to generate a tensile force on the upper capping top cover 5 of the inner cavity of the movable column 4, the bottom cover 6 is required to be fixed, and therefore, the bottom cover 6 is limited by the limiting ring 12, when the support column supports the top plate, the movable column 4 rises, the elastic member 10 is pulled up, and when the support is canceled, the movable column 4 falls, and the elastic member 10 accelerates the falling speed of the movable column 4 by the tensile force.
In the using process of the invention, emulsion enters the inner cavity of the movable column 4 through a gap between the limiting ring 12 and the liquid control bottom cover 6, after the emulsion fills the inner cavity of the movable column 4, the capping top cover 5 moves upwards, at the moment, the distance between the capping top cover 5 and the liquid control bottom cover 6 is the largest, the movable column 4 supports a top plate, after the use, the emulsion flows out of the inner cavity of the movable column 4 through the gap between the limiting ring 12 and the liquid control bottom cover 6, the capping top cover 5 moves downwards, and the elastic piece 10 pulls the capping top cover 5 to accelerate to reset downwards.
The invention also discloses a method for installing the resetting device for the two-piece single hydraulic prop, which comprises the following steps:
the upper end of the elastic member 10 is hung on the upper connecting ring 9,
The lower end of the elastic member 10 is hung on the lower connection ring 11,
The liquid control bottom cover 6 of the movable column 4 is pulled to the lower part of the limiting ring 12, so that the limiting ring 12 clamps the liquid control bottom cover 6, the movable column 4 is integrally inserted into the cylinder barrel 1,
Rotating the plunger 4 in accordance with the indicia aligns the through-holes of the upper coupling ear 14 and the lower coupling ear 15,
The single prop is continuously inclined to a horizontal state, the bolt 13 is sequentially inserted into the through holes of the upper connecting lug 14 and the lower connecting lug 15 along the guide groove through dead weight, and then the movable prop can be lifted by about 150mm to tighten the elastic piece by installing the dust cover, so that the elastic piece is in a stretching state.
The dismantling process of the invention is opposite to the installation process, when dismantling is needed, the movable column 4 is rotated according to the mark, and then the single prop is continuously dumped to a horizontal state, so that the bolt 13 slides out of the through holes of the upper connecting lug 14 and the lower connecting lug 15 by utilizing the dead weight, and the movable column 4 is pulled out of the cylinder barrel 1.
Claims (5)
1. The resetting device for the two-piece single hydraulic prop is characterized in that a main piece of the two-piece single hydraulic prop consists of a cylinder body and a movable cylinder body, wherein the cylinder body consists of a cylinder barrel (1), a bottom sealing base (2) and a multifunctional clamp (3), and the movable cylinder body consists of a movable cylinder (4), a top sealing top cover (5), a liquid control bottom cover (6) and a column head (7);
The device comprises an upper connecting lug (14) fixed below the liquid control bottom cover (6), a lower connecting lug (15) fixed on a bottom sealing base (2), an upper connecting ring (9) fixed below a top sealing top cover (5) at the upper part of an inner cavity of the movable column (4) and a lower connecting ring (11) fixed on the liquid control bottom cover (6), wherein an elastic piece (10) arranged vertically is arranged between the upper connecting ring (9) and the lower connecting ring (11), the upper connecting lug (14) and the lower connecting lug (15) are used for mutually matching to fix the lower end of the elastic piece (10) on the bottom sealing base (2), and the elastic piece (10) is used for providing tension for the movable column (4) so as to enable the movable column to reset rapidly;
The lower connecting ring (11) consists of an upper fixing ring (16) and a lower fixing ring (17) which are arranged up and down, the lower end of the lower fixing ring (17) is fixedly connected with the liquid control bottom cover (6), the upper end of the lower fixing ring is connected with the upper fixing ring (16) through bolts, and the upper fixing ring (16) is used for installing the lower end of the elastic piece (10);
The upper connecting lug (14) and the lower connecting lug (15) are respectively provided with a through hole, and the two through holes are used for the bolts (13) to sequentially pass horizontally and limit the upper connecting lug (14);
The liquid control bottom cover (6) is fixedly connected with a guide block (18) downwards, the guide block (18) is horizontally penetrated and provided with a guide groove, the guide groove and a through hole of the upper connecting lug (14) are coaxially arranged, the guide groove is used for accommodating a bolt (13), and the bolt (13) is used for sequentially inserting the upper connecting lug (14) and the lower connecting lug (15) through holes along the guide groove in the horizontal direction.
2. The resetting device for the two-piece single hydraulic prop according to claim 1, wherein the bolt (13) is strip-shaped and horizontally arranged between the bottom sealing base (2) and the liquid control bottom cover (6), and the bolt (13) is used for inserting through holes of the upper connecting lug (14) and the lower connecting lug (15) along the guide groove and limiting the upper connecting lug (14).
3. The resetting device for the two-piece single hydraulic prop according to claim 2, wherein a limiting ring (12) is arranged in the movable prop (4) around the circumference of the inner wall of the movable prop, the limiting ring (12) is fixedly connected with the inner wall of the movable prop (4), and the limiting ring (12) is used for limiting the liquid control bottom cover (6) so that the liquid control bottom cover (6) is positioned below the limiting ring (12).
4. A resetting device for a two-piece hydraulic prop according to claim 3, characterized in that the outer wall of the cylinder (1) is provided with a marking for observing whether the through holes of the upper (14) and lower (15) connecting lugs are aligned.
5. A method of installing a reset device for a two-piece single hydraulic prop, characterized in that the method of installing a reset device for a two-piece single hydraulic prop using any one of claims 1-4 is comprised of the steps of:
the upper end of the elastic piece (10) is hung on the upper connecting ring (9),
The lower end of the elastic piece (10) is hung on the lower connecting ring (11),
The liquid control bottom cover (6) of the movable column (4) is pulled to be under the limiting ring (12), so that the limiting ring (12) clamps the liquid control bottom cover (6),
The movable column (4) is integrally inserted into the cylinder barrel (1),
The movable column (4) is rotated according to the mark on the outer wall of the cylinder barrel (1) to align the through holes of the upper connecting lug (14) and the lower connecting lug (15),
The single body is continuously poured to a horizontal state, so that the bolt (13) is sequentially inserted into the through holes of the upper connecting lug (14) and the lower connecting lug (15) along the guide groove by self weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010154390.3A CN111173545B (en) | 2020-03-07 | 2020-03-07 | Resetting device for two-piece single hydraulic prop and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010154390.3A CN111173545B (en) | 2020-03-07 | 2020-03-07 | Resetting device for two-piece single hydraulic prop and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111173545A CN111173545A (en) | 2020-05-19 |
| CN111173545B true CN111173545B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010154390.3A Active CN111173545B (en) | 2020-03-07 | 2020-03-07 | Resetting device for two-piece single hydraulic prop and installation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN111173545B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111648799B (en) * | 2020-06-30 | 2024-06-14 | 陕西陕煤韩城矿业有限公司 | Two-piece type single hydraulic prop |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211900651U (en) * | 2020-03-07 | 2020-11-10 | 陕西陕煤韩城矿业有限公司 | Resetting device for two-piece single hydraulic prop |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2126314B2 (en) * | 1971-05-27 | 1976-12-23 | Klöckner-Werke AG, 4100 Duisburg | HYDRAULIC DOUBLE SUPPORTING STAMP FOR MINING |
| CN100535394C (en) * | 2005-10-31 | 2009-09-02 | 中国矿业大学 | Suspension type hydraulic prop |
| CN201496076U (en) * | 2009-09-18 | 2010-06-02 | 山东泰山建能机械集团有限公司 | Floated type single hydraulic prop stay |
| CN101655010B (en) * | 2009-09-18 | 2011-07-27 | 陶宾 | Dual-protection single hydraulic prop |
| CN102155244B (en) * | 2011-05-18 | 2013-01-30 | 徐州中矿矿山机械科技有限公司 | Easy disassembly and assembly mining single hydraulic prop with warning function |
| CN202417537U (en) * | 2012-01-08 | 2012-09-05 | 陶宾 | Anti-leakage single hydraulic prop |
| CN202788879U (en) * | 2012-09-11 | 2013-03-13 | 上海支护机械设备有限公司 | Plunger-suspension-type mining single hydraulic prop |
| CN203035207U (en) * | 2012-12-17 | 2013-07-03 | 北川万德福机电产品研发实验室 | Single hydraulic prop |
| CN204024688U (en) * | 2014-06-30 | 2014-12-17 | 洛阳龙门煤业有限公司 | Hydraulic support operating valve of composite mining blocking device |
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2020
- 2020-03-07 CN CN202010154390.3A patent/CN111173545B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211900651U (en) * | 2020-03-07 | 2020-11-10 | 陕西陕煤韩城矿业有限公司 | Resetting device for two-piece single hydraulic prop |
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