CN113107482B - Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof - Google Patents
Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof Download PDFInfo
- Publication number
- CN113107482B CN113107482B CN202110478586.2A CN202110478586A CN113107482B CN 113107482 B CN113107482 B CN 113107482B CN 202110478586 A CN202110478586 A CN 202110478586A CN 113107482 B CN113107482 B CN 113107482B
- Authority
- CN
- China
- Prior art keywords
- coal mining
- cable
- wire rope
- frame
- steel wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005065 mining Methods 0.000 claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 239000007787 solid Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 2
- 230000005465 channeling Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention discloses a tractor for a coal mining machine electric clamping plate for a large-dip angle fully-mechanized mining face and a use method thereof, which can effectively avoid the problem of downward movement of a cable clamping plate, greatly improve the production efficiency, reduce the damage frequency of the cable and reduce the manual maintenance cost.
Description
Technical Field
The invention discloses a tractor of a clamping plate of a coal cutter for a large-dip angle fully-mechanized coal face and a using method thereof, relates to a tractor for preventing a cable of the coal cutter from channeling, and belongs to the technical field of mining mechanical equipment. In particular to a tractor which can effectively avoid the problem of downward movement of a cable clamping plate, greatly improve the production efficiency, reduce the damage frequency of cables and reduce the manual maintenance cost.
Background
The inclination angle of a working face of a gold-phoenix coal mine 011816 is 6-24 degrees, the trend length is 1049m, the trend length is 243m, 144 hydraulic supports are arranged in total, a cable and a spray pipeline of the coal mining machine penetrate into a cable clamp plate from a middle groove to a tail, the cable clamp plate is arranged in a cable groove of a scraper conveyor, one end of the cable clamp plate is fixed on the old pond side of the cable groove at the middle groove, the other end of the cable clamp plate is fixed with a towing device of the coal mining machine, in order to prevent the cable clamp plate from channeling accidents, a group of self-made manual cable clamp plate clamping devices are arranged on each 7 supports downwards in the front stage 135# hydraulic support of mining of the working face, but the self-made manual cable clamp plate clamping devices have poor use effect, the event that the small-range cable clamp plate is in the cable groove is in a plurality of times, the problem of local cable clamp plate damage occurs, and conventionally the anti-slip technology adopted for preventing the cable channeling is carried out by using double-strand 8# iron wires at the cable groove of each support, and each ten hydraulic supports use a sleeper to traverse the cable groove to block, but the mode of preventing the coal mining machine from channeling accidents is greatly reduced, single production is caused, the coal channeling speed is far below 1-2, the coal channeling is greatly, the level is lower than the coal channeling operation is regulated, and the safety level is greatly, and the coal is greatly safe, and the coal is greatly in the coal channeling safety level.
The publication No. CN212784572U discloses a middle cable trough capable of fixing a cable clamp of a coal mining machine, which is mainly formed by welding a connecting plate, a supporting plate, a guide pipe, a backing plate, a fixed block and a guide block, and is arranged at the middle position of a scraper conveyor.
Disclosure of Invention
In order to improve the situation, the invention provides the tractor capable of effectively avoiding the problem of downward movement of the cable clamping plate, greatly improving the production efficiency, reducing the cable damage frequency and reducing the manual maintenance cost.
The invention discloses a coal mining machine electric clamp plate tractor for a large-dip angle fully mechanized coal mining face, which is realized by the following steps: the invention discloses a large-dip angle fully-mechanized mining face coal mining machine electric clamping plate tractor which comprises a lifting ring, a connecting block, a fixed rod, a clamp, a frame, a solid rubber wheel, a connecting bolt and a rubber wheel shaft, wherein the cross section of the top of the frame is of a trapezoid structure, the frame is welded into a whole by a steel plate with the thickness of 8 mm, the clamp is fixedly arranged in the trapezoid structure by the connecting bolt, the clamp is welded by the steel plate with the thickness of 10 mm, one end of the fixed rod is vertically arranged at the top of the frame, the lifting ring is fixedly arranged at the other end of the fixed rod by the connecting block, the bottom end of the frame is hinged with the solid rubber wheel by the rubber wheel shaft, and the diameter of the solid rubber wheel is larger than the width of the frame.
The invention discloses a coal mining machine electric clamping plate tractor for a large-dip angle fully-mechanized mining face, which consists of a frame, a rubber wheel shaft, connecting bolts, clamps, solid rubber wheels, fixing bolts, anti-friction rollers and fixing plates, wherein the cross sections of two ends of the frame are of trapezoid structures, the frame is welded into a whole by steel plates with the thickness of 8 mm, the clamps are fixedly arranged in the trapezoid structures by the connecting bolts, the clamps are welded by the steel plates with the thickness of 10 mm, two fixing plates are vertically arranged at the top end of the frame, the anti-friction rollers are hinged between the two fixing plates by the fixing bolts, the solid rubber wheels are hinged at the bottom of the frame by the rubber wheel shaft and are arranged on the clamps at the bottom, and the diameter of the solid rubber wheels is larger than the width of the frame.
The invention also relates to a using method of the explosion protector for the mining engineering, which is characterized by comprising the following steps of:
the application method of the coal mining machine electric clamp plate tractor for the large-dip angle fully mechanized coal mining face comprises the following steps:
1) Installing a winch at the lower opening of the working surface;
2) The front pushing beam of the 4# hydraulic bracket is fixed by welding and foundation bolts;
3) A JD-1 dispatch winch on a front pushing beam of a machine head 4# hydraulic support is used for leading out a steel wire rope;
4) The steel wire rope is guided by the guide pulley and pulled into the cable groove;
5) Connecting the steel wire rope head with a traction ring of a steel wire rope traction device of the cable clamp plate;
6) The cable clamping plate is pulled to slide through the winch and the steel wire rope;
7) When the coal mining machine is ascending, the winch is braked and the clutch is released;
8) Pulling the cable clamp to ascend through a towing rope of the coal mining machine;
9) The cable clamp drives the steel wire rope traction device to move upwards;
10 When the coal mining machine descends, the inching winch pulls the cable clamp to move downwards through the steel wire rope.
Advantageous effects
1. The problem of downward movement of the cable clamping plate can be effectively avoided, and the production efficiency is greatly improved.
2. The cable damage frequency is reduced, and the manual maintenance cost is reduced.
3. Simple structure, low cost and general popularization meaning.
Drawings
FIG. 1 is a schematic diagram of a coal mining machine electric pinch-plate retractor for a large-dip angle fully mechanized coal mining face;
FIG. 2 is a right side view of the coal mining machine electric pinch-plate retractor for a large-dip fully-mechanized coal mining face of the present invention;
FIG. 3 is a schematic view of the structure of the coal mining machine for large-dip angle fully mechanized coal mining face of the present invention;
FIG. 4 is a schematic diagram of the structure of the coal mining machine for large-dip angle fully mechanized coal mining face when the coal mining machine is adjusted by the clamping plate tractor for preventing channeling;
FIG. 5 is a schematic view of an embodiment 2 of a cable clamp plate retractor of a coal mining machine for a large-dip fully mechanized coal mining face;
FIG. 6 is a left side view of embodiment 2 of the cable clamp plate retractor of the coal mining machine for a large-dip fully mechanized coal mining face of the present invention.
In the accompanying drawings
Wherein the method comprises the following steps: lifting ring (1), connecting block (2), dead lever (3), anchor clamps (4), frame (5), solid rubber wheel (6), connecting bolt (7), rubber shaft (8), coal-winning machine tow rope (9), cable splint draw gear (10), wire rope (11), leading wheel (12), cable duct (13), winch (14), protection network (15), fixing bolt (16), antifriction gyro wheel (17), fixed plate (18).
Detailed Description
Example 1
The invention discloses a coal mining machine electric clamp plate tractor for a large-dip angle fully mechanized coal mining face, which is realized by the following steps: the invention discloses a large-dip angle fully-mechanized mining face coal mining machine electric clamp plate tractor which comprises a lifting ring (1), a connecting block (2), a fixing rod (3), a clamp (4), a frame (5), a solid rubber wheel (6), a connecting bolt (7) and a rubber wheel shaft (8), wherein the cross section of the top of the frame (5) is of a trapezoid structure, the frame (5) is integrally welded by a steel plate with the thickness of 8 mm, the clamp (4) is fixedly arranged in the trapezoid structure through the connecting bolt (7), the clamp (4) is welded by a steel plate with the thickness of 10 mm, one end of the fixing rod (3) is vertically arranged at the top of the frame (5), the lifting ring (1) is fixedly arranged at the other end of the fixing rod (3) through the connecting block (2), the bottom end of the frame (5) is hinged with the solid rubber wheel (6) through the rubber wheel shaft (8), and the diameter of the solid rubber wheel (6) is larger than the width of the frame (5);
example 2
The differences between this example and example 1 are: the invention discloses a large-dip angle fully-mechanized mining face coal mining machine electric clamp plate tractor which comprises a frame (5), a rubber wheel shaft (8), connecting bolts (7), clamps (4), solid rubber wheels (6), fixing bolts (16), anti-friction rollers (17) and fixing plates (18), wherein cross sections of two ends of the frame (5) are of trapezoid structures, the frame (5) is integrally welded by steel plates of 8 mm, the clamps (4) are fixedly arranged in the trapezoid structures through the connecting bolts (7), the clamps (4) are welded by steel plates of 10 mm, two fixing plates (18) are vertically arranged at the top ends of the frame (5), anti-friction rollers (17) are hinged between the two fixing plates (18) through the fixing bolts (16), the solid rubber wheels (6) are hinged to the bottom of the frame (5) through the rubber wheel shaft (8), and the diameters of the solid rubber wheels (6) are larger than the widths of the frames (5).
The frame (5) is welded by steel plates with the thickness of 8 mm to form an integrated design, so that the firmness of the device can be enhanced;
the clamp (4) is formed by welding a 10 mm steel plate, so that the clamp (4) is more stable, and the clamping effect of the clamp (4) is ensured;
the bottom end of the frame (5) is hinged with a solid rubber wheel (6) through a rubber wheel shaft (8), so that towing of a towing rope (9) of the coal mining machine can be facilitated, and blocking is avoided;
the diameter of the solid rubber wheel (6) is larger than the width of the frame (5), so that the phenomenon that the frame (5) is scratched when the coal cutter towing rope (9) is pulled to move to influence the continuous movement of the coal cutter towing rope (9) can be avoided, and meanwhile, the frame (5) can be protected;
the design that two fixing plates (18) are vertically arranged at the top end of the frame (5) can increase the structural stability of the device and avoid the damage of the device caused by high-force dragging;
the anti-friction roller (17) is hinged between the two fixing rods (3) through the fixing bolts (16), so that the cable trough (13) can be prevented from being blocked and scraped, the cable stacking is effectively avoided, the problem of cable clamp plate sliding down is thoroughly solved, and meanwhile, the production speed is effectively improved;
the application method of the coal mining machine electric clamp plate tractor for the large-dip angle fully mechanized coal mining face comprises the following steps:
1) Installing a winch (14) at a lower opening of the working surface;
2) The front pushing beam of the 4# hydraulic bracket is fixed by welding and foundation bolts;
3) A wire rope (11) is led out by a JD-1 dispatch winch (14) on a push beam in front of a machine head 4# hydraulic support;
4) The steel wire rope (11) is guided by a guide pulley and pulled into the cable groove (13);
5) Connecting the head of the steel wire rope (11) with a traction ring of a traction device of the cable clamp plate steel wire rope (11);
6) Traction cable clamp plates slide through a winch (14) and a steel wire rope (11);
7) When the coal mining machine is in an upward direction, the winch (14) is braked, and the clutch is released;
8) A cable clamp (4) is pulled to ascend through a towing rope (9) of the coal mining machine;
9) The cable clamp (4) drives the steel wire rope (11) traction device to move upwards;
10 When the coal mining machine descends, the inching winch (14) pulls the cable clamp (4) to move downwards through the steel wire rope (11);
the winch (14) is arranged at the lower opening of the working surface, so that the steel wire rope (11) can be tensioned immediately after being loosened, and then is stopped immediately after being tensioned, potential risks are avoided, and the operation is convenient and rapid;
the cable clamp plate can effectively avoid the problem of downward movement of the cable clamp plate, greatly improve the production efficiency, and simultaneously reduce the damage frequency of the cable and the manual maintenance cost.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
It should be further noted that, when the foregoing specific embodiments are described, only the differences from other embodiments are described for simplicity and clarity, but those skilled in the art will appreciate that the foregoing specific embodiments are also independent solutions.
Claims (8)
1. The utility model provides a coal-winning machine electricity clamp plate tractor for large-dip angle comprehensive face which characterized in that: the clamp plate tractor for the coal mining machine comprises a lifting ring, a connecting block, a fixing rod, a clamp, a frame, a solid rubber wheel, a connecting bolt and a rubber wheel shaft, wherein the cross section of the top of the frame is of a trapezoid structure, the clamp is fixedly arranged in the trapezoid structure through the connecting bolt, one end of the fixing rod is vertically arranged at the top of the frame, the lifting ring is fixedly arranged at the other end of the fixing rod through the connecting block, the solid rubber wheel is hinged to the bottom end of the frame through the rubber wheel shaft, and the using method of the clamp plate tractor for the coal mining machine for the large-dip angle fully-mechanized coal mining face comprises the following steps:
1) Installing a winch at the lower opening of the working surface;
2) The front pushing beam of the 4# hydraulic bracket is fixed by welding and foundation bolts;
3) A JD-1 dispatch winch on a front pushing beam of a machine head 4# hydraulic support is used for leading out a steel wire rope;
4) The steel wire rope is guided by the guide pulley and pulled into the cable groove;
5) Connecting the steel wire rope head with a traction ring of a steel wire rope traction device of the cable clamp plate;
6) The cable clamping plate is pulled to slide through the winch and the steel wire rope;
7) When the coal mining machine is ascending, the winch is braked and the clutch is released;
8) Pulling the cable clamp to ascend through a towing rope of the coal mining machine;
9) The cable clamp drives the steel wire rope traction device to move upwards;
10 When the coal mining machine descends, the inching winch pulls the cable clamp to move downwards through the steel wire rope,
during the use, install the design at the working face lower opening with the winch, can make wire rope after lax, the tensioning immediately, stop immediately after the tensioning, avoid potential risk, and the simple operation reaches can effectively avoid the cable splint to scurry the problem down, improves production efficiency greatly, can reduce the cable damage frequency simultaneously, reduces the purpose of manual maintenance cost.
2. The coal mining machine electric grip plate retractor for a large inclination angle fully mechanized coal mining face of claim 1, wherein the diameter of the solid rubber wheel is larger than the width of the frame.
3. The coal mining machine electric clamp plate retractor for large-inclination fully mechanized coal mining face according to claim 1, wherein the clamp is made of 10 mm steel plates through welding.
4. The coal mining machine electric grip plate retractor for a large-inclination fully mechanized coal mining face according to claim 1, wherein the frame is integrally welded by 8 mm steel plates.
5. The utility model provides a coal-winning machine electricity clamp plate tractor for large-dip angle comprehensive face which characterized in that: the clamp plate tractor for the coal mining machine for the large-dip angle fully-mechanized mining face comprises a frame, a rubber wheel shaft, connecting bolts, clamps, solid rubber wheels, fixing bolts, friction-proof rollers and fixing plates, wherein the cross sections of two ends of the frame are of trapezoid structures, the clamps are fixedly arranged in the trapezoid structures through the connecting bolts, two fixing plates are vertically arranged at the top end of the frame, the friction-proof rollers are hinged between the fixing plates through the fixing bolts, the solid rubber wheels are hinged to the bottom of the frame through the rubber wheel shaft and are arranged on the clamps at the bottom of the frame, and the using method of the clamp plate tractor for the coal mining machine for the large-dip angle fully-mechanized mining face comprises the following steps:
1) Installing a winch at the lower opening of the working surface;
2) The front pushing beam of the 4# hydraulic bracket is fixed by welding and foundation bolts;
3) A JD-1 dispatch winch on a front pushing beam of a machine head 4# hydraulic support is used for leading out a steel wire rope;
4) The steel wire rope is guided by the guide pulley and pulled into the cable groove;
5) Connecting the steel wire rope head with a traction ring of a steel wire rope traction device of the cable clamp plate;
6) The cable clamping plate is pulled to slide through the winch and the steel wire rope;
7) When the coal mining machine is ascending, the winch is braked and the clutch is released;
8) Pulling the cable clamp to ascend through a towing rope of the coal mining machine;
9) The cable clamp drives the steel wire rope traction device to move upwards;
10 When the coal mining machine descends, the inching winch pulls the cable clamp to move downwards through the steel wire rope;
during the use, install the winch at the design of working face lower opening, can make wire rope after lax, the tensioning immediately, stop immediately after the tensioning, avoid potential risk, and the simple operation reaches and can effectively avoid the cable splint to scurry the problem down, improves production efficiency greatly, can reduce the cable damage frequency simultaneously, reduces the purpose of manual maintenance cost, two through fixing bolt articulates there is antifriction gyro wheel between the fixed plate, can avoid the cable duct to be scraped by the card, effectively avoids the cable to pile up.
6. The coal mining machine electric grip plate retractor for large inclination angle fully mechanized coal mining face of claim 5, wherein the diameter of the solid rubber wheel is larger than the width of the frame.
7. The tractor for large-inclination fully-mechanized coal mining face according to claim 5, wherein the clamp is made of 10 mm steel plates by welding.
8. The tractor for large-inclination fully mechanized coal mining face of claim 5, wherein the frame is welded by 8 mm steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478586.2A CN113107482B (en) | 2021-04-30 | 2021-04-30 | Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478586.2A CN113107482B (en) | 2021-04-30 | 2021-04-30 | Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113107482A CN113107482A (en) | 2021-07-13 |
| CN113107482B true CN113107482B (en) | 2023-06-27 |
Family
ID=76720637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110478586.2A Active CN113107482B (en) | 2021-04-30 | 2021-04-30 | Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113107482B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170378Y (en) * | 2007-11-20 | 2008-12-24 | 上海大屯能源股份有限公司 | Monorail crane device for mine working face |
| CN101845958B (en) * | 2010-06-11 | 2012-10-10 | 北京天地华泰采矿工程技术有限公司 | Fully mechanized coal face bracket withdrawing method and bracket traction puller for withdrawing |
| CN103344993B (en) * | 2013-07-24 | 2015-07-22 | 南通力威机械有限公司 | Winch type towrope testing system |
| CN204823450U (en) * | 2015-06-22 | 2015-12-02 | 西安科技大学 | Automatic device that pulls of coal -winning machine cable based on steel -cable drawing |
| CN205895233U (en) * | 2016-07-18 | 2017-01-18 | 刘兆义 | Automatic cable carrier of coal machine |
| GB2575798A (en) * | 2018-07-23 | 2020-01-29 | Caterpillar Global Mining Europe Gmbh | Cable handling system for longwall mining machines |
| CN210640630U (en) * | 2019-10-23 | 2020-05-29 | 山西汾西矿业（集团）有限责任公司 | Cable towing device is prevented scurrying by big inclination fully-mechanized coal face coal-winning machine cable |
| CN110875586A (en) * | 2019-10-25 | 2020-03-10 | 宁夏天地奔牛实业集团有限公司 | Active cable towing system for coal mining machine cable and active cable following system and method |
| CN211908320U (en) * | 2020-05-22 | 2020-11-10 | 甘肃万胜矿业有限公司 | Coal-winning machine cable anti-running device under big inclination angle stoping condition |
| CN212743996U (en) * | 2020-08-18 | 2021-03-19 | 郑州煤机智能工作面科技有限公司 | Towing trolley based on steel wire rope traction |
-
2021
- 2021-04-30 CN CN202110478586.2A patent/CN113107482B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113107482A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211034716U (en) | Cable laying guiding device for cable well mouth | |
| CN217921108U (en) | Municipal works pipeline construction equipment | |
| CN107299595A (en) | A kind of bridge prestress pipeline tube drawing lashing chassis | |
| CN2586034Y (en) | Core tube through bushing appts. for prefabricated seabea pipeline | |
| CN110002343B (en) | Self-driven urban underground prefabricated comprehensive pipe gallery laying hoisting machine and construction method | |
| CN201937208U (en) | Cable-releasing stand for cabling in cable channel | |
| CN113107482B (en) | Coal-winning machine electric clamping plate tractor for large-dip angle fully-mechanized coal face and using method thereof | |
| CN107387139B (en) | Downward dismantling process for large-inclination-angle retracting working surface support | |
| CN110065888B (en) | Cable crane main cable dismantling construction method | |
| CN117049382A (en) | Underground large-pipe-diameter pipeline installation and laying construction method and system | |
| CN114645619B (en) | Construction method for integrally pulling Gamma steel strand of containment vessel of nuclear power station | |
| CN214031291U (en) | Cable conveying system for open caisson construction | |
| CN115832956A (en) | Single-core cable well-entering laying slideway auxiliary device and method | |
| CN214850118U (en) | Device for laying long-distance large-section high-voltage cable | |
| CN206041366U (en) | Mouth of pipe cable laying auxiliary device | |
| CN104528506B (en) | Mine hoist and unhooking test method thereof | |
| CN203486824U (en) | Automatic distance-adjustment mechanism for coupling movable pulley block | |
| CN113879865A (en) | Mining hydraulic support loading system | |
| CN111392667A (en) | Operation trolley for installing reinforcing steel bars on dam panel and using method | |
| CN217720518U (en) | Cable pulling and moving auxiliary device | |
| CN112061901A (en) | Cable paying-off device and construction method thereof | |
| CN220521244U (en) | Trackless slip form device of concrete faced rockfill dam | |
| CN201282319Y (en) | Cable mobile hanging device | |
| CN217412895U (en) | Traction device for raise boring pipeline construction | |
| CN219351124U (en) | Cable laying auxiliary device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |