CN110748369B - Stabilizing device and stabilizing method for mining engineering thin coal seam hydraulic support frame - Google Patents
Stabilizing device and stabilizing method for mining engineering thin coal seam hydraulic support frame Download PDFInfo
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- CN110748369B CN110748369B CN201911184531.XA CN201911184531A CN110748369B CN 110748369 B CN110748369 B CN 110748369B CN 201911184531 A CN201911184531 A CN 201911184531A CN 110748369 B CN110748369 B CN 110748369B
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- 239000003245 coal Substances 0.000 title claims abstract description 39
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 22
- 238000005065 mining Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008093 supporting effect Effects 0.000 claims description 29
- 238000010030 laminating Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000005381 potential energy Methods 0.000 claims description 3
- 230000003019 stabilising effect Effects 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- E21D23/0418—Positioning devices and stabilizing means for the props
-
- 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
-
- 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
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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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a stabilizing device and a stabilizing method for a hydraulic support frame of a thin coal seam in mining engineering, which comprises a base and a shell, wherein the bottom of the base is provided with a first groove, and the shell is positioned in the first groove; insert ground with four location nails of L shape branch both sides, make L shape branch, triangle fixed plate and cylinder are at same horizontal plane, the dispersion increases the area of contact with ground, and other end threaded connection through L shape branch is in the inside of screw thread even pipe, screw thread even pipe and first plate connection, make two L shape branches fix the third plate body through screw thread even pipe and first plate body, and the location nail is consolidated between third plate body and L shape branch, the overall stability of base has been improved under the cooperation of two cylinders and triangle fixed plate, the condition of having avoided the carriage to take place to empty when using takes place to take place, the stability of hydraulic support frame has been improved.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a stabilizing device and a stabilizing method for a hydraulic support frame of a thin coal seam in mining engineering.
Background
The coal mine is a region where people mine coal resources in a coal-rich mining area, and is generally divided into a mineworker coal mine and an opencast coal mine, when a coal seam is far away from the ground surface, coal is generally dug towards an underground excavation roadway, which is the mineworker coal mine, when the coal seam is very close to the ground surface, coal is generally dug by directly stripping a surface soil layer, which is the opencast coal mine, most coal mines in China belong to the mineworker coal mine, the coal mine range comprises the large region of the ground underground and related facilities, the coal mine is a reasonable space excavated by people when the coal seam is dug in a geological layer rich in coal, which generally comprises a roadway, a well cave, an excavation surface and the like, the coal is the most main solid fuel, which is one of combustible organic rocks, the coal seam is difficult to mine in the coal mining, a hydraulic support frame is required to be used for supporting the coal seam during thin mining so as to improve the safety of the thin coal mining, and the base structure of the thin hydraulic support frame, the supporting frame is easy to incline when in use, and the supporting effect is reduced, so that the stabilizing device and the stabilizing method for the mining engineering thin coal seam hydraulic supporting frame are provided.
Disclosure of Invention
The invention aims to provide a stabilizing device and a stabilizing method for a hydraulic support frame of a thin coal seam in mining engineering, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a stabilizing device of a hydraulic support frame for a thin coal seam in mining engineering comprises a base and a shell, wherein a first groove is formed in the bottom of the base, the shell is positioned inside the first groove, rod bodies are welded on two sides of the shell, a support plate is welded at one end of each of the two rod bodies, a second plate body is fixedly connected to the bottom of the support plate, three inner cylinders which are arranged at equal intervals are welded at the bottom of the second plate body, an outer cylinder is connected to the outer wall of each inner cylinder in a sliding mode, a third plate body is welded at the bottom of the outer cylinder, threaded connecting pipes are welded on two sides of the bottom of the third plate body, an L-shaped support rod is connected to the inner threads of each threaded connecting pipe, a first plate body is arranged at the bottom of the third plate body, a threaded portion is arranged inside one side, positioned on each threaded connecting pipe, of, the one end welding that threaded connecting pipe was kept away from to L shape branch has the cylinder, the lateral wall welding of cylinder has the triangle fixed plate, the one end that L shape branch is close to the cylinder runs through there are two location nails.
As further preferable in the present technical solution: the utility model discloses a clamp plate, including base, first recess, third recess, threaded rod, clamp plate, fixed column and fixed column sliding connection, the three second recess that the equidistance was arranged is seted up at the top of base, the inside threaded connection of second recess has the threaded rod, the third recess of mutual symmetry with the second recess is seted up to the bottom of base, the one end of threaded rod runs through in the inside of third recess, the threaded rod is located the inside one end welding of first recess and has the clamp plate, the bottom laminating of clamp plate is connected with the fixed column, the.
As further preferable in the present technical solution: the one end of fixed column runs through in the top of casing, fixed column and casing sliding connection, the one end welding that the fixed column is located the casing has the spring, the one end that the fixed column was kept away from to the spring welds in the inside diapire of casing.
As further preferable in the present technical solution: the top of base is provided with the knob, the knob is located the inside of second recess, the knob welds mutually with the threaded rod one end that is located the second recess.
As further preferable in the present technical solution: the equal screwed connection in both sides of second plate body has the guide rail, the spout has all been seted up to the inner wall both sides that the base is located first recess, one side embedding of guide rail is in the inside of spout, guide rail and spout sliding connection.
As further preferable in the present technical solution: the top one end of cylinder has cup jointed the rubber sleeve, the top laminating of rubber sleeve in the bottom of base, the bottom laminating of rubber sleeve in the top of triangle fixed plate.
As further preferable in the present technical solution: the hydraulic support frame is installed to top one side of base, the pneumatic cylinder is installed to one side that the hydraulic support frame was kept away from at the top of base, the hydraulic stem of pneumatic cylinder is connected with one side of hydraulic support frame.
A method for stabilizing a hydraulic support frame of a mining engineering thin coal seam comprises the following steps:
step one, when the device works, the four positioning nails on two sides are inserted into the ground, so that the L-shaped supporting rod, the triangular fixing plate and the column body are positioned on the same horizontal plane, the contact area with the ground is dispersedly increased, and the L-shaped supporting rod is connected to the inside of the threaded connecting pipe through the other end of the L-shaped supporting rod in a threaded manner;
step two, the threaded connecting pipe is connected with the first plate body, so that the two L-shaped supporting rods are fixed to the third plate body through the threaded connecting pipe and the first plate body, the positioning nails are used for reinforcing the space between the third plate body and the L-shaped supporting rods, and the overall stability of the base is improved under the matching of the two cylinders and the triangular fixing plate;
thirdly, the knob is rotated clockwise to drive the threaded rod to rotate, the threaded rod drives the pressing plate to drive the fixing column to slide in the third groove, and the fixing column is connected with the shell, the rod body, the supporting plate reinforcing base and the second plate body;
and fourthly, under the action of elastic potential energy of the spring, the inner cylinder drives the second plate body to slide in the first groove through the outer cylinder, and the tightness between the second plate body and the third plate body is adjusted according to the pressure.
Compared with the prior art, the invention has the beneficial effects that: insert ground with four location nails of L shape branch both sides, make L shape branch, triangle fixed plate and cylinder are at same horizontal plane, the dispersion increases the area of contact with ground, and other end threaded connection through L shape branch is in the inside of screw thread even pipe, screw thread even pipe and first plate connection, make two L shape branches fix the third plate body through screw thread even pipe and first plate body, and the location nail is consolidated between third plate body and L shape branch, the overall stability of base has been improved under the cooperation of two cylinders and triangle fixed plate, the condition of having avoided the carriage to take place to empty when using takes place to take place, the stability of hydraulic support frame has been improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of region A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of region B of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of region C of FIG. 1 according to the present invention;
fig. 5 is a schematic structural view of the triangular fixing plate of the present invention.
In the figure: 1. a hydraulic support frame; 2. a base; 3. a triangular fixing plate; 4. an inner barrel; 5. an outer cylinder; 6. a first plate body; 7. a second plate body; 8. a hydraulic cylinder; 9. a cylinder; 10. positioning nails; 11. a third plate body; 12. a rubber sleeve; 13. a knob; 14. a threaded rod; 15. fixing a column; 16. a spring; 17. a housing; 18. a support plate; 19. a rod body; 20. pressing a plate; 21. an L-shaped strut; 22. connecting the pipe by screw thread; 23. a threaded portion; 24. a guide rail; 25. a chute; 26. a first groove; 27. a second groove; 28. and a third groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-5, the present invention provides a technical solution: a stabilizing device of a hydraulic support frame for a thin coal seam in mining engineering comprises a base 2 and a shell 17, wherein a first groove 26 is formed in the bottom of the base 2, the shell 17 is positioned in the first groove 26, rod bodies 19 are welded on two sides of the shell 17, a support plate 18 is welded at one end of each of the two rod bodies 19, a second plate body 7 is fixedly connected to the bottom of the support plate 18, three inner cylinders 4 which are arranged at equal intervals are welded at the bottom of the second plate body 7, outer cylinders 5 are slidably connected to the outer walls of the inner cylinders 4, a third plate body 11 is welded at the bottom of each outer cylinder 5, threaded connecting pipes 22 are welded on two sides of the bottom of each third plate body 11, L-shaped support rods 21 are connected to the inner threads of the threaded connecting pipes 22, first plate bodies 6 are arranged at the bottoms of the third plate bodies 11, threaded portions 23 are arranged in one sides of the first plate bodies 6, the, the L-shaped supporting rod 21 is welded with the column body 9 at one end far away from the threaded connecting pipe 22, the triangular fixing plate 3 is welded on the outer side wall of the column body 9, and two positioning nails 10 penetrate through one end, close to the column body 9, of the L-shaped supporting rod 21.
In this embodiment, specifically: three second recess 27 that the equidistance was arranged is seted up at the top of base 2, the internal thread of second recess 27 is connected with threaded rod 14, the third recess 28 with second recess 27 mutual symmetry is seted up to the bottom of base 2, the one end of threaded rod 14 runs through in the inside of third recess 28, threaded rod 14 is located the inside one end welding of first recess 26 and has clamp plate 20, the bottom laminating of clamp plate 20 is connected with fixed column 15, the inside and fixed column 15 sliding connection of third recess 28, through above setting, through all setting up threaded rod 14 in three second recess 27, drive clamp plate 20 through threaded rod 14 and make fixed column 15 slide in third recess 28, and with casing 17, the body of rod 19 and the backup pad 18 are consolidated and are connected between base 2 and the second plate body 7, and then improved the stability of third plate body 11 through inner tube 4 and urceolus 5.
In this embodiment, specifically: one end of the fixing column 15 penetrates through the top of the shell 17, the fixing column 15 is connected with the shell 17 in a sliding mode, the spring 16 is welded at one end, located on the shell 17, of the fixing column 15, one end, far away from the fixing column 15, of the spring 16 is welded on the inner bottom wall of the shell 17, and through the arrangement, when the fixing column 15 slides in the shell 17, the spring 16 is extruded, and then the compression buffering effect of the spring 16 is adjusted.
In this embodiment, specifically: the top of base 2 is provided with knob 13, and knob 13 is located the inside of second recess 27, and knob 13 welds mutually with threaded rod 14 one end that is located second recess 27, through above setting, clockwise rotation knob 13 makes knob 13 drive threaded rod 14 drive fixed column 15 to the position removal of second plate body 7, makes fixed column 15 extrude spring 16 to the inside of casing 17.
In this embodiment, specifically: the equal screwed connection in both sides of second plate body 7 has guide rail 24, and spout 25 has all been seted up to the inner wall both sides that base 2 is located first recess 26, and one side of guide rail 24 is embedded in the inside of spout 25, guide rail 24 and spout 25 sliding connection, through above setting, under the sliding fit of guide rail 24 and spout 25, make second plate body 7 slide in the inside of urceolus 5 through inner tube 4, and then adjust the compactness between second plate body 7 and the third plate body 11.
In this embodiment, specifically: the rubber sleeve 12 has been cup jointed to the top one end of cylinder 9, and the top of rubber sleeve 12 is laminated in the bottom of base 2, and the bottom of rubber sleeve 12 is laminated in the top of triangle fixed plate 3, through above setting, makes rubber sleeve 12 protect cylinder 9 and base 2's junction, and the top of rubber sleeve 12 and bottom laminate with base 2 and triangle fixed plate 3 respectively mutually and protect, has reduced the condition of the friction damage of cylinder 9.
In this embodiment, specifically: hydraulic support frame 1 is installed to top one side of base 2, and hydraulic cylinder 8 is installed to one side that hydraulic support frame 1 was kept away from at the top of base 2, and hydraulic cylinder 8's hydraulic stem is connected with one side of hydraulic support frame 1.
Application example 2
A method for stabilizing a hydraulic support frame of a mining engineering thin coal seam comprises the following steps:
step one, when the device works, the four positioning nails 10 on two sides are inserted into the ground, so that the L-shaped supporting rod 21, the triangular fixing plate 3 and the column body 9 are on the same horizontal plane, the contact area with the ground is dispersedly increased, and the L-shaped supporting rod 21 is connected to the inside of the threaded connecting pipe 22 through the other end of the L-shaped supporting rod 21 in a threaded manner;
step two, the threaded connecting pipe 22 is connected with the first plate body 6, so that the two L-shaped supporting rods 21 are fixed on the third plate body 11 through the threaded connecting pipe 22 and the first plate body 6, the positioning nails 10 are used for reinforcing the space between the third plate body 11 and the L-shaped supporting rods 21, and the overall stability of the base 2 is improved under the matching of the two cylinders 9 and the triangular fixing plate 3;
step three, the knob 13 is rotated clockwise, so that the knob 13 drives the threaded rod 14 to rotate, the threaded rod 14 drives the pressing plate 20 to enable the fixing column 15 to slide in the third groove 28, and the fixing column is connected with the shell 17, the rod body 19 and the supporting plate 18 to reinforce the connection between the base 2 and the second plate body 7;
and step four, under the action of the elastic potential energy of the spring 16, the inner cylinder 4 drives the second plate body 7 to slide in the first groove 26 through the outer cylinder 5, and further the tightness between the second plate body 7 and the third plate body 11 is adjusted according to the pressure.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a stabilising arrangement of mining engineering thin coal seam hydraulic support frame, includes base (2) and casing (17), its characterized in that: the bottom of the base (2) is provided with a first groove (26), the shell (17) is positioned in the first groove (26), the rod bodies (19) are welded on two sides of the shell (17), the supporting plate (18) is welded on one end of each of the two rod bodies (19), the bottom of the supporting plate (18) is fixedly connected with a second plate body (7), the bottom of the second plate body (7) is welded with three inner cylinders (4) which are arranged at equal intervals, the outer wall of each inner cylinder (4) is connected with an outer cylinder (5) in a sliding manner, the bottom of each outer cylinder (5) is welded with a third plate body (11), threaded connecting pipes (22) are welded on two sides of the bottom of each third plate body (11), the threaded connecting pipes (22) are connected with each other, the L-shaped supporting rods (21) are connected with internal threads of the threaded connecting pipes (22), the bottom of each third plate body (11) is provided with a first plate body (6), and threaded portions (23, the first plate body (6) is in threaded connection with the threaded connecting pipe (22) through a threaded portion (23), the L-shaped supporting rod (21) is welded to one end, away from the threaded connecting pipe (22), of the cylinder (9), the outer side wall of the cylinder (9) is welded to the triangular fixing plate (3), two positioning nails (10) penetrate through one end, close to the cylinder (9), of the L-shaped supporting rod (21), three second grooves (27) are formed in the top of the base (2) and are arranged at equal intervals, the threaded rod (14) is connected to the inner threads of the second grooves (27), third grooves (28) which are symmetrical to the second grooves (27) are formed in the bottom of the base (2), one end of the threaded rod (14) penetrates through the inside of the third grooves (28), one end, located in the first groove (26), of the threaded rod (14), of the pressing plate (20) is welded to one end, and the bottom of the pressing plate (20) is connected with a, the inside and fixed column (15) sliding connection of third recess (28), the one end of fixed column (15) runs through in the top of casing (17), fixed column (15) and casing (17) sliding connection, the one end welding that fixed column (15) are located casing (17) has spring (16), the one end that fixed column (15) were kept away from in spring (16) welds in the inside diapire of casing (17).
2. The stabilizing device for the hydraulic support frame of the mining engineering thin coal seam according to claim 1, is characterized in that: the top of base (2) is provided with knob (13), knob (13) are located the inside of second recess (27), knob (13) and threaded rod (14) are located the one end of second recess (27) and are welded mutually.
3. The stabilizing device for the hydraulic support frame of the mining engineering thin coal seam according to claim 1, is characterized in that: the equal screwed connection in both sides of second plate body (7) has guide rail (24), spout (25) have all been seted up to inner wall both sides that base (2) are located first recess (26), one side embedding of guide rail (24) is in the inside of spout (25), guide rail (24) and spout (25) sliding connection.
4. The stabilizing device for the hydraulic support frame of the mining engineering thin coal seam according to claim 1, is characterized in that: the top one end of cylinder (9) has cup jointed rubber sleeve (12), the top laminating of rubber sleeve (12) is in the bottom of base (2), the bottom laminating of rubber sleeve (12) is in the top of triangle fixed plate (3).
5. The stabilizing device for the hydraulic support frame of the mining engineering thin coal seam according to claim 1, is characterized in that: the hydraulic support frame (1) is installed to top one side of base (2), pneumatic cylinder (8) are installed to one side that hydraulic support frame (1) was kept away from at the top of base (2), the hydraulic stem of pneumatic cylinder (8) is connected with one side of hydraulic support frame (1).
6. A method for stabilizing a device for stabilizing a hydraulic support frame of a mining engineering thin coal seam according to any one of claims 1 to 5, characterized by comprising the following steps: step one, when the device works, the four positioning nails on two sides are inserted into the ground, so that the L-shaped supporting rod, the triangular fixing plate and the column body are positioned on the same horizontal plane, the contact area with the ground is dispersedly increased, and the L-shaped supporting rod is connected to the inside of the threaded connecting pipe through the other end of the L-shaped supporting rod in a threaded manner;
step two, the threaded connecting pipe is connected with the first plate body, so that the two L-shaped supporting rods are fixed to the third plate body through the threaded connecting pipe and the first plate body, the positioning nails are used for reinforcing the space between the third plate body and the L-shaped supporting rods, and the overall stability of the base is improved under the matching of the two cylinders and the triangular fixing plate;
thirdly, the knob is rotated clockwise to drive the threaded rod to rotate, the threaded rod drives the pressing plate to drive the fixing column to slide in the third groove, and the fixing column is connected with the shell, the rod body, the supporting plate reinforcing base and the second plate body; and fourthly, under the action of elastic potential energy of the spring, the inner cylinder drives the second plate body to slide in the first groove through the outer cylinder, and the tightness between the second plate body and the third plate body is adjusted according to the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184531.XA CN110748369B (en) | 2019-11-27 | 2019-11-27 | Stabilizing device and stabilizing method for mining engineering thin coal seam hydraulic support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184531.XA CN110748369B (en) | 2019-11-27 | 2019-11-27 | Stabilizing device and stabilizing method for mining engineering thin coal seam hydraulic support frame |
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| Publication Number | Publication Date |
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| CN110748369A CN110748369A (en) | 2020-02-04 |
| CN110748369B true CN110748369B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911184531.XA Expired - Fee Related CN110748369B (en) | 2019-11-27 | 2019-11-27 | Stabilizing device and stabilizing method for mining engineering thin coal seam hydraulic support frame |
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| CN (1) | CN110748369B (en) |
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|---|---|---|---|---|
| WO1980002859A1 (en) * | 1979-06-14 | 1980-12-24 | Inst Gornogo Dela So An Sssr | Mechanized support unit |
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-
2019
- 2019-11-27 CN CN201911184531.XA patent/CN110748369B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002859A1 (en) * | 1979-06-14 | 1980-12-24 | Inst Gornogo Dela So An Sssr | Mechanized support unit |
| CN105545224A (en) * | 2014-10-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Supporting seat |
| CN106956688A (en) * | 2017-05-30 | 2017-07-18 | 青岛智享专利技术开发有限公司 | A kind of road and rail mouthful automatic lift guard rail |
| CN107127891A (en) * | 2017-06-09 | 2017-09-05 | 太仓市霍普思机械技术有限公司 | A kind of urban construction agitating device |
| CN207212377U (en) * | 2017-09-19 | 2018-04-10 | 张小荣 | A kind of coal-mine integrated-mining equipment loading apparatus |
| CN208236445U (en) * | 2018-03-22 | 2018-12-14 | 杨智 | A kind of mining engineering girdle hydraulic support frame pedestal |
| CN209094424U (en) * | 2018-11-23 | 2019-07-12 | 徐州华盛盛基管桩有限公司 | A kind of wire winding device for steel reinforcement cage processing |
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| Title |
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| CN110748369A (en) | 2020-02-04 |
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