CN111963224A - Angle adjusting and supporting device of anchor rod machine and using method thereof - Google Patents
Angle adjusting and supporting device of anchor rod machine and using method thereof Download PDFInfo
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- CN111963224A CN111963224A CN202010941111.8A CN202010941111A CN111963224A CN 111963224 A CN111963224 A CN 111963224A CN 202010941111 A CN202010941111 A CN 202010941111A CN 111963224 A CN111963224 A CN 111963224A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding 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
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
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- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Physics & Mathematics (AREA)
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses an angle adjusting and supporting device of an anchor rod machine and a using method thereof, and the angle adjusting and supporting device comprises a telescopic upright post, an angle scale and an anchor rod machine sleeve, wherein the angle scale is of a 90-degree fan-shaped frame structure and is fixedly connected to the telescopic upright post, the arc-shaped edge of the angle scale is provided with scales, the tail end of the anchor rod machine sleeve is sealed, the middle upper part of the anchor rod machine sleeve is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected to the corners of two right-angle edges on the angle scale, the tail end of the anchor rod machine sleeve is fixedly connected to an angle adjusting guide arc-shaped through hole arranged on the arc-shaped edge. The device can realize angle adjustment of the anchor rod adjusting machine, stepless adjustment of the angle is realized, the installation is stable and reliable, the telescopic upright post occupies small roadway space and is convenient to operate, the device also has the characteristics of simple structure, reasonable design, stability and reliability, the problem of difficulty in constructing the side part and the anchor rod (cable) hole of the bottom plate can be effectively solved, the anchor rod (cable) construction efficiency is improved, and the labor intensity of workers is reduced.
Description
Technical Field
The invention relates to an angle adjusting and supporting device of a bolting machine and a using method thereof, belonging to the technical field of angle adjusting equipment of the bolting machine.
Background
Along with the gradual extension to the deep of coal mining, the coal mine tunnel mine pressure shows more obviously, adopt passive support can't meet the demands of the safe production of the mine already, therefore the anchor rod (cable) initiative support mode must become the main support mode of the tunnel; when an anchor rod (cable) hole is constructed in a roadway, the anchor rod (cable) is perpendicular to a roadway contour line and is influenced by construction site conditions, construction technologies and a structure of an anchor rod machine, the anchor rod machine cannot construct a roadway wall part and a bottom plate anchor rod hole, the construction of the angle of the anchor rod (cable) hole is not accurate, engineering design requirements are difficult to meet, the engineering quality of the roadway is seriously influenced, and the use range of supporting the roadway wall part and the bottom plate anchor rod (cable) is greatly limited, while Chinese patent application No. 201820153152.9 discloses a special anchor cable construction support, specifically a semicircular ring, an anchor rod machine fixing plate, a sleeve and a jack, wherein the semicircular ring is fixedly connected to a workbench, the sleeve is connected to the semicircular ring and can move along the semicircular ring, the anchor rod machine fixing plate is fixedly connected with the sleeve, the tail end of the anchor rod machine fixing plate is hinged to the workbench, and two ends of the jack are, the jack can limit the rotation process of the anchor rod machine fixing plate, the telescopic length is limited, the problem of limited angle adjustment is avoided, the jack is fixed on a workbench, the workbench occupies a large space and is inconvenient to transport, the jack has an elastic buffering effect, the jack vibrates under the action of the anchor rod machine, and inaccuracy is caused during punching; due to the limitation of a working table, a jack and the like, the device is difficult to construct upper anchor holes and lower anchor holes, and in addition, the structure and the working procedure of the device are complex, so that the operation and the use of field workers are inconvenient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a bolter angle adjustment strutting arrangement and application method thereof to solve the problem that exists among the above-mentioned prior art.
The technical scheme adopted by the invention is as follows: the utility model provides an anchor rod machine angle modulation strutting arrangement, including flexible stand, angle scale and anchor rod machine sleeve, the angle scale is 90 fan-shaped frame structures, fixed connection is on flexible stand, the arc limit of angle scale is provided with the scale, anchor rod machine sleeve tail end seals, well upper portion fixedly connected with pivot, the corner on two right-angle sides is gone up to pivot swivelling joint on the angle scale, anchor rod machine sleeve tail end passes through bolt fixed connection on the angle modulation direction arc through-hole that the arc limit of angle scale set up, the radial centre of a circle and the coincidence of pivot axis of angle modulation direction arc through-hole.
Preferably, the telescopic upright column comprises an inner upright column, an outer upright column and a hydraulic oil cylinder, the outer upright column is of a square tube structure, the inner upright column is of a square structure, a cylinder seat and a cylinder rod of the hydraulic oil cylinder are fixedly connected to the inner lower end of the outer upright column and the lower end of the inner upright column respectively, and the inner upright column is movably inserted into the upper end part of the outer upright column.
Preferably, the upper end of the inner upright post and the lower end of the outer upright post are provided with conical bodies.
Preferably, the lower end of the outer upright post is fixedly connected with a bottom plate.
Preferably, the upper middle part of the outer upright post is provided with a plurality of locking screws, and the locking screws can abut against the surface of the inner upright post.
Preferably, a plurality of sleeves with uniform intervals are arranged in the length direction of the telescopic stand column, the sleeves are arranged on one side, adjacent to each other, of the angle scale, the end portion of the rotating shaft is provided with a threaded portion, and the rotating shaft penetrates through the angle scale and the sleeves in sequence and then is locked through nuts.
Preferably, two right-angle sides corner of above-mentioned angle scale sets up three through-hole, and the through-hole in the middle of the through-hole passes the pivot, and the distance of two other through-holes and middle through-hole all equals with the distance between two adjacent sleeve pipes, and one of two other through-holes has inserted the locating pin from the sleeve pipe.
Preferably, a plurality of filler strips are arranged in the length direction of the telescopic upright post and are positioned between the angle scale and the telescopic upright post.
Preferably, the tail end of the sleeve of the anchor rod machine is provided with a connecting lug, a guide pipe is arranged at the through hole of the connecting lug, and the guide pipe is movably inserted into the angle-adjusting guide arc-shaped through hole and then locked by a bolt.
A use method of an angle adjustment supporting device of a bolting machine comprises the following steps: when an anchor rod hole is constructed, a hydraulic oil cylinder is connected into a hydraulic system, a liquid inlet valve is opened, the hydraulic oil cylinder pushes out an inner upright column until the telescopic upright column is tightly fixed with the top lower part of the construction roadway section, a conical body at the bottom of the top of the telescopic upright column is embedded into a roadway top bottom plate, after the telescopic upright column is firmly supported, a rotating shaft connected with a sleeve of the anchor rod machine penetrates through a through hole in the middle of an angle disc, the installation position of the angle disc is adjusted according to the requirement of the construction drilling construction angle, the sector of the angle disc faces upwards or faces, the other through hole is inserted into a positioning pin to fix the angle disc, the rotating shaft is inserted into a sleeve at the set position of the telescopic upright column, the sleeve of the anchor rod machine is fixed on the telescopic upright column by adopting a nut, the connecting lug at the tail end of the sleeve of the anchor rod machine is guided to an arc-shaped through hole to, and (4) a screw rod welded at the bottom of the anchor rod machine penetrates through a preformed hole at the tail part of the sleeve of the anchor rod machine and is locked by a nut, so that the angle adjustment and the fixation of the anchor rod machine are completed.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
(1) the device has the characteristics of simple structure, reasonable design, stability, reliability and convenience and quickness in operation, can effectively solve the problem of difficulty in constructing the wall part and the anchor rod (cable) hole of the bottom plate, can accurately adjust the construction angle according to the design requirement, can ensure the engineering quality of an anchor rod (cable) supporting technology, improve the construction efficiency of the anchor rod (cable), and reduce the labor intensity of workers;
(2) the telescopic upright post formed by the inner upright post, the outer upright post and the hydraulic oil cylinder has stable and reliable telescopic performance, a square structure, automatic guiding, high rigidity and strength and good support stability;
(3) the conical body is arranged, so that the telescopic upright post can be embedded into the upper bottom and the lower bottom of a roadway conveniently after being extended, the support stability is improved, and the operation safety of the roof bolter is higher;
(4) the bottom plate is arranged, so that the contact area with the roadway ground is increased, the telescopic upright post is convenient to support more stably, and the stability of a bottom fulcrum is better by matching with the conical body;
(5) the plurality of locking screws are arranged, so that the telescopic stand column can be locked after extending out, and the supporting stability and reliability of the telescopic stand column in the operation process are improved;
(6) the multiple sleeves are vertically arranged, so that the installation of bolting machines with different heights is facilitated, the application range of the bolting machines and the selection of the optimal drilling position are improved, the equipment cost is reduced, the drilling quality is improved, the sleeve structure facilitates the installation of the rotating shaft, the angle adjustment and the angle scale fixation are performed, the number of parts of the device is reduced, the equipment is simplified, and the cost is lower;
(7) the angle scale is provided with three through holes, so that the sleeve can be conveniently matched to carry out installation in different forms (four azimuth positions), the application range of the angle scale is improved, the requirement that the anchor rod machine is close to drilling at 360 degrees is met, the positioning pin plays a role in limiting the angle scale, and the rotating shaft and the nut play a role in locking the angle scale;
(8) the angle disc is suspended conveniently by arranging the filler strip, so that the connection of the bolts at the guide arc-shaped through holes of the angle adjusting plate is facilitated, and the limited angle adjustment caused by mutual interference is avoided;
(9) set up engaging lug and stand pipe, conveniently carry out the bolt and fix stock machine sleeve and angle scale to realize rotatory direction, improve installation effectiveness and positioning efficiency.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of a bolter sleeve construction;
fig. 4 is a schematic view of the angle scale structure.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1-4, an anchor rod machine angle adjustment strutting arrangement, including flexible stand 1, angle scale 2 and anchor rod machine sleeve 3, angle scale 2 is 90 fan-shaped frame structures, fixed connection is on flexible stand 1, the arc limit of angle scale 2 is provided with scale 17, 3 tail end seals of anchor rod machine sleeve, well upper portion fixedly connected with pivot 4, the corner on two right-angle sides on angle scale 2 is connected in pivot 4 swivelling joint, 3 tail ends of anchor rod machine sleeve pass through bolt 5 fixed connection on the angle modulation direction arc through-hole 6 that 2 arc limits of angle scale set up, the radial centre of a circle of angle modulation direction arc through-hole 6 and the coincidence of pivot 4 axis, anchor rod machine sleeve 3 is used for fixed anchor rod machine 14, 14 tail end welding of anchor rod machine has screw rod 15, screw rod 15 adopts the nut locking after wearing out the preformed hole 16 of 3 tail ends of anchor rod machine sleeve.
Preferably, the telescopic upright post 1 comprises an inner upright post 101, an outer upright post 102 and a hydraulic oil cylinder 103, wherein the outer upright post 102 is of a square tube structure, the inner upright post 101 is of a square structure, a cylinder seat and a cylinder rod of the hydraulic oil cylinder 103 are respectively and fixedly connected to the inner lower end of the outer upright post 102 and the lower end of the inner upright post 101, and the inner upright post 101 is movably inserted into the upper end part of the outer upright post 102.
Preferably, the upper end of the inner column 101 and the lower end of the outer column 102 are provided with cones 104, and four cones are usually used for one end.
Preferably, the lower end of the outer upright post 102 is fixedly connected with the middle part of a bottom plate 105, the conical body 104 is welded at the bottom of the bottom plate 105, and the bottom plate also plays a role of fixedly connecting a hydraulic oil cylinder base.
Preferably, a plurality of locking screws 106 are arranged at the middle upper part of the outer upright post 102, the plurality of locking screws 106 can abut against the surface of the inner upright post 101, and a plurality of locking screws are arranged at two sides and are locked in a vertically staggered manner.
Preferably, a plurality of sleeves 7 with uniform intervals are arranged in the length direction of the telescopic upright post 1, the sleeves 7 are arranged on one fixed adjacent side of the angle scale 2, a threaded part is arranged at the end part of the rotating shaft 4, and the rotating shaft 4 sequentially penetrates through the angle scale 2 and the sleeves 7 and then is locked by a nut 8.
Preferably, two right-angle side corners of the angle scale 1 are provided with three through holes 9, the middle through hole 9 penetrates through the rotating shaft 4, the distance between the other two through holes and the middle through hole 9 is equal to the distance between the two adjacent sleeves 7, one of the other two through holes is inserted with a positioning pin 10 from the sleeves, and the positioning pin has a self-positioning clamping (interference fit) effect and is convenient to assemble and disassemble.
Preferably, a plurality of cushion strips 11 are arranged in the length direction of the telescopic upright post 1, and the cushion strips 11 are positioned between the angle scale 2 and the telescopic upright post 1.
Preferably, the tail end of the sleeve 3 of the anchor rod machine is provided with a connecting lug 12, a guide pipe 13 is arranged at the through hole of the connecting lug 12, and the guide pipe 13 is movably inserted into the angle-adjusting guide arc-shaped through hole 6 and then locked by a bolt 5.
Example 2: a use method of an angle adjustment supporting device of a bolting machine comprises the following steps: when constructing anchor rod (cable) hole, connecting hydraulic cylinder into hydraulic system, opening liquid inlet valve, pushing out inner column by hydraulic cylinder until the telescopic column is tightly fixed with the top lower part of construction tunnel section, ensuring the cone at the top bottom of telescopic column to be embedded into tunnel top bottom plate, after the telescopic column is supported firmly, making the rotating shaft connected with anchor rod machine sleeve pass through the through hole in the middle of angle scale, according to the construction angle of construction drilling, regulating the installation position of angle scale, making the fan shape of angle scale upward or toward, inserting other through hole into positioning pin to fix angle scale, inserting the rotating shaft into the sleeve of the set position of telescopic column, fixing anchor rod machine sleeve on the telescopic column by adopting nut, according to the designed construction angle, regulating angle position of connecting lug at tail end of anchor rod machine sleeve along angle regulation guide arc through hole, fixing angle by adopting bolt, inserting anchor rod machine sleeve into anchor rod machine sleeve, the screw rod welded at the bottom of the anchor rod machine penetrates through a preformed hole at the tail part of the sleeve of the anchor rod machine and then is locked by a nut, so that the angle adjustment and fixation of the anchor rod machine are completed, and the construction of anchor rod (cable) holes in all directions of 0-360 degrees around the rotating shaft screw rod can be realized by rotating the sleeve of the anchor rod machine and the angle adjusting dial.
In this embodiment, the bolt machine tail part needs to be welded with a screw rod and a matched corresponding nut at the bottom of the bolt machine in advance, so that the bolt machine is stabilized when the bolt machine tail part is installed in the bolt machine tail part sleeve; the size of a preformed hole at the tail part of the sleeve of the anchor rod machine is determined according to the size of a screw and a nut at the bottom of the anchor rod machine; the distance between the axes of the two adjacent sleeves is consistent with the distance between the two adjacent through holes of the angle scale.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (10)
1. The utility model provides a bolter angle modulation strutting arrangement which characterized in that: including flexible stand (1), angle scale (2) and bolter sleeve (3), angle scale (2) are 90 fan-shaped frame structures, fixed connection is on flexible stand (1), the arc limit of angle scale (2) is provided with the scale, the sealing of bolter sleeve (3) tail end, well upper portion fixedly connected with pivot (4), the corner on two right angle limits is gone up in angle scale (2) in pivot (4) swivelling joint, bolter sleeve (3) tail end passes through bolt (5) fixed connection on angle modulation direction arc through-hole (6) that angle scale (2) arc limit set up, the radial centre of a circle and pivot (4) the axis coincidence of angle modulation direction arc through-hole (6).
2. The bolter angle adjustment support device of claim 1, wherein: the telescopic upright post (1) comprises an inner upright post (101), an outer upright post (102) and a hydraulic oil cylinder (103), the outer upright post (102) is of a square tube structure, the inner upright post (101) is of a square structure, a cylinder seat and a cylinder rod of the hydraulic oil cylinder (103) are respectively and fixedly connected with the inner lower end of the outer upright post (102) and the lower end of the inner upright post (101), and the inner upright post (101) is movably inserted into the upper end part of the outer upright post (102).
3. A bolter angle adjustment support device as defined in claim 2, wherein: the upper end of the inner upright post (101) and the lower end of the outer upright post (102) are provided with conical bodies (104).
4. A bolter angle adjustment support device as defined in claim 2, wherein: the lower end of the outer upright post (102) is fixedly connected with a bottom plate (105).
5. A bolter angle adjustment support device as defined in claim 2, wherein: a plurality of locking screws (106) are arranged at the middle upper part of the outer upright post (102), and the locking screws (106) can abut against the surface of the inner upright post (101).
6. The bolter angle adjustment support device of claim 1, wherein: the telescopic upright post (1) is provided with a plurality of sleeves (7) which are evenly spaced in the length direction, the sleeves (7) are arranged on one side, which is adjacent to the fixed angle scale (2), of the rotating shaft (4), the end part of the rotating shaft (4) is provided with a threaded part, and the rotating shaft (4) penetrates through the angle scale (2) and the sleeves (7) in sequence and then is locked by nuts (8).
7. An angle adjustment support device for a roof bolter according to claim 6, wherein: three through holes (9) are arranged at the corners of two right-angle edges of the angle scale (1), the middle through hole (9) penetrates through the rotating shaft (4), the distance between the other two through holes and the middle through hole (9) is equal to the distance between the two adjacent sleeves (7), and one of the other two through holes is inserted with a positioning pin (10) from the sleeve.
8. The bolter angle adjustment support device of claim 1, wherein: a plurality of cushion strips (11) are arranged in the length direction of the telescopic upright post (1), and the cushion strips (11) are positioned between the angle scale (2) and the telescopic upright post (1).
9. The bolter angle adjustment support device of claim 1, wherein: the tail end of the sleeve (3) of the anchor rod machine is provided with a connecting lug (12), a guide pipe (13) is arranged at the through hole of the connecting lug (12), and the guide pipe (13) is movably inserted into the angle-adjusting guide arc-shaped through hole (6) and then locked by a bolt (5).
10. The use method of the angle adjustment support device of the bolter according to claim 1, wherein: the method comprises the following steps: when an anchor rod hole is constructed, a hydraulic oil cylinder is connected into a hydraulic system, a liquid inlet valve is opened, the hydraulic oil cylinder pushes out an inner upright column until the telescopic upright column is tightly fixed with the top lower part of the construction roadway section, a conical body at the bottom of the top of the telescopic upright column is embedded into a roadway top bottom plate, after the telescopic upright column is firmly supported, a rotating shaft connected with a sleeve of the anchor rod machine penetrates through a through hole in the middle of an angle disc, the installation position of the angle disc is adjusted according to the requirement of the construction drilling construction angle, the sector of the angle disc faces upwards or faces, the other through hole is inserted into a positioning pin to fix the angle disc, the rotating shaft is inserted into a sleeve at the set position of the telescopic upright column, the sleeve of the anchor rod machine is fixed on the telescopic upright column by adopting a nut, the connecting lug at the tail end of the sleeve of the anchor rod machine is guided to an arc-shaped through hole to, and (4) a screw rod welded at the bottom of the anchor rod machine penetrates through a preformed hole at the tail part of the sleeve of the anchor rod machine and is locked by a nut, so that the angle adjustment and the fixation of the anchor rod machine are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941111.8A CN111963224A (en) | 2020-09-09 | 2020-09-09 | Angle adjusting and supporting device of anchor rod machine and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010941111.8A CN111963224A (en) | 2020-09-09 | 2020-09-09 | Angle adjusting and supporting device of anchor rod machine and using method thereof |
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| CN111963224A true CN111963224A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010941111.8A Pending CN111963224A (en) | 2020-09-09 | 2020-09-09 | Angle adjusting and supporting device of anchor rod machine and using method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112578084A (en) * | 2020-12-09 | 2021-03-30 | 贵州盘江煤电集团技术研究院有限公司 | Detection device is administered to colliery gas in pit |
| CN113834706A (en) * | 2021-08-31 | 2021-12-24 | 山东大学 | Anchor rod positioning and constructing device and method in geomechanical model test |
| WO2023012674A1 (en) * | 2021-08-03 | 2023-02-09 | Reflex Instruments Asia Pacific Pty Ltd | Measurement tool installation apparatus and method |
| CN116717198A (en) * | 2023-08-09 | 2023-09-08 | 保利长大工程有限公司 | Device for controlling tunnel drilling angle and use method |
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| CN212508373U (en) * | 2020-09-09 | 2021-02-09 | 贵州盘江煤电集团技术研究院有限公司 | Angle adjusting and supporting device of anchor rod machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113834706A (en) * | 2021-08-31 | 2021-12-24 | 山东大学 | Anchor rod positioning and constructing device and method in geomechanical model test |
| CN116717198A (en) * | 2023-08-09 | 2023-09-08 | 保利长大工程有限公司 | Device for controlling tunnel drilling angle and use method |
| CN116717198B (en) * | 2023-08-09 | 2024-03-29 | 保利长大工程有限公司 | Device for controlling tunnel drilling angle and use method |
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