CN110596750A - Assembler for pre-tightening and mounting micro-seismic sensor on underground coal mine anchor rod - Google Patents
Assembler for pre-tightening and mounting micro-seismic sensor on underground coal mine anchor rod Download PDFInfo
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- CN110596750A CN110596750A CN201910886421.1A CN201910886421A CN110596750A CN 110596750 A CN110596750 A CN 110596750A CN 201910886421 A CN201910886421 A CN 201910886421A CN 110596750 A CN110596750 A CN 110596750A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
- G01V2001/526—Mounting of transducers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
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- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides an assembler for pre-tightening and mounting a microseismic sensor on an underground anchor rod of a coal mine, and belongs to the technical field of coal mine safety monitoring instruments and equipment. The explosion-proof shell is an external steel bearing structure with a hollow middle part and a hole at the bottom end, and the inner wall of the explosion-proof shell is loaded with a meshing gear; the energy supply accessory is positioned in the explosion-proof shell, comprises a power supply, a motor and a meshing gear and provides kinetic energy for the rotation of the internal rotation cavity; the outer wall of the internal rotation cavity is provided with a gear which can be in meshing transmission with the explosion-proof shell gear, the inner wall is subjected to rough treatment, and the internal rotation cavity can realize rotary rotation by virtue of a sliding rail at the bottom of the shell and an energy supply accessory; the fastening clamp is arranged on the upper part of the explosion-proof shell and consists of a fastening arm, a chain, a pull rod and a high-strength spring, and the fastening and sealing with the end part of the mine anchor rod are realized. The assembler frees the dependence of sensor installation on manpower, improves the installation accuracy, anchoring strength and working efficiency of sensor screws, strengthens the stability of the whole structure, and can meet the requirement of a micro-seismic system on signal receiving.
Description
Technical Field
The invention relates to a device for installing a signal sensor of a micro-seismic system in a coal mine, which realizes the efficient and quick installation of the sensor in the coal mine and promotes the recycling of the sensor, in particular to an assembler for pre-tightening an anchor rod in the coal mine to install the micro-seismic sensor.
Background
Due to the frequent occurrence of coal mine rock burst accidents and water inrush accidents, a microseismic system is required to be arranged in a rock burst mine according to the requirements of the national energy agency and the safety supervision bureau to monitor the stress and damage conditions of surrounding rocks of the mine; and in the water control regulation of coal mines, a key technical means for controlling water is set for the micro-seismic system. However, the cost of microseismic sensors is relatively large, 1.5 ten thousand yuan on average, and the effective accurate monitoring radius of each sensor is 50m, so that 20 × 2 to 40 sensors are required for a working surface with a propulsion length of 1000m, and the cost is about 60 ten thousand yuan.
The traditional method for installing the sensor at present adopts a drilling deep-buried sensor, cannot be recycled and is directly buried in a goaf of a mine working face; and the sensor is in a weak current state under the condition that the line is not damaged, and for an inflammable coal seam and a gas mine, the existence of the sensor in a goaf becomes a factor threatening the safety of the mine. Therefore, in many cases, the sensors need to be taken out by excavating equipment, which causes a large amount of work and serious waste. Researchers then began to recognize that the bolt could be the signal transmission medium, and therefore began to connect the sensor with the bolt, anchored the bolt into the deep rock mass, the bolt end placed the sensor, and for roadways that do not facilitate the use of on-site drilling tools, installed directly with the on-site original bolt. However, this solution presents a challenge to the installation equipment, and at present, the anchoring agent and the sensor bolt are anchored together mainly by manual means, but the success rate of this means is very low, the efficiency is low, the labor is large, the material is wasted, and an effective installation assembler is lacked.
Therefore, in order to improve the recycling rate and the installation power of the sensor, reduce the damage rate of the sensor, improve the working efficiency, realize mechanization and reduce the cost, an efficient installation assembler is urgently needed.
Disclosure of Invention
The invention aims to provide an assembler for pre-tightening and installing a microseismic sensor on an underground coal mine anchor rod.
The invention adopts the technical scheme for realizing the purpose that:
an assembler for pre-tightening and installing a micro-seismic sensor on an underground coal mine anchor rod comprises an explosion-proof shell 19, an internal rotation cavity 14, an energy supply accessory and fastening pliers.
The explosion-proof shell 19 comprises a clamping groove 13, a shell transmission gear 9, a rolling sleeve 26, a rolling shaft 27, a sliding rail 17, a ring pad 18 and a sealing chassis 21; a bolt hole 30 is reserved on the base of the explosion-proof shell 19, the explosion-proof shell 19 is a steel bearing structure with a cylindrical hollow middle part, the clamping groove 13 is positioned on the outer side wall, the shell transmission gear 9 is arranged on the upper and lower parts of the inner wall of the explosion-proof shell 19 by virtue of a rolling sleeve 26 and a rolling shaft 27, the sliding rail 17 is positioned at the end part of the hollow base of the explosion-proof shell 19 close to the inner wall, the ring gasket 18 is arranged on the inner wall surface of the bolt hole 30, and the sealing chassis 21 is fixed on the lower part of the bolt hole;
the specified distance is the length of the bolt allowed to be exposed; the purpose of the bottom sealing disk 21 is to hold the bolts against it to avoid exposing them too long or too short.
The internal rotation cavity 14 comprises a fold 15, a transmission thread 31, a roller 29, a sealing cushion 8, an anti-seepage cushion 16 and a sealing strip 28; the fold 15 is arranged on the inner wall of the internal rotation cavity 14, the transmission thread 31 is annularly arranged at the same position meshed with the shell transmission gear 9, the sealing cushion 8 is positioned at the upper part of the upper shell transmission gear 9, the internal rotation cavity 14 and the explosion-proof shell 19 are arranged in the gap, the roller 29 rolls in the sliding rail 17, the anti-seepage cushion 16 is arranged at the upper part of the sliding rail 17 and the roller 29 and is connected with the base and the inner wall of the shell, and the sealing strip 28 is arranged at the upper parts of the roller 29 and the sliding rail 17, is connected with the sliding rail 17 and is jointed with the wall of the internal rotation cavity;
the energy supply accessories comprise a power supply 12, a motor 11, a wheel shaft gear 10 and an electric wire 20; the power supply 12 is positioned in a clamping groove 13 of the explosion-proof shell 19 and is connected with the motor 11 by using a wire 20, the motor 11 is connected with the wheel shaft gear 10, and the wheel shaft gear 10 is connected with the shell transmission gear 9; the starting of the motor 11 realizes the rotation of the wheel shaft gear 10, and further realizes the rotation of the shell transmission gear 9;
the motor 11 drives the wheel shaft gear 10 to rotate and transmit the rotation to the shell transmission gear 9, then the rotation of the internal rotation cavity 14 is realized through the transmission thread, and the stirring of the anchoring agent is realized by means of the inner wall wrinkles 15;
the fastening pliers comprise a pull rod 3, a fastening arm 4, a chain 5, a clamping arm 6, a pull rod base 1, an arm base 2, a clamping sleeve 7, a pull rod spring 1-1, an arm spring 2-1 and a connecting ring 25; the pull rod base 1 and the arm base 2 are arranged at the top of the explosion-proof shell 19, the pull rod 3 and the fastening arm 4 are in a pre-tightening force state through a connecting pull rod spring 1-1 and an arm spring 2-1 respectively, the clamping arm 6 is arranged on the arm base 2 and can swing for 180 degrees, and the fastening arm 4 with the clamping sleeve 7 at the end part is connected with the pull rod 3 through a chain 5 and a connecting ring 25;
the pull rod 3 is linked to fasten the arm 4, and the arm in the initial state is horizontally in a spring loose state, so that a large pre-tightening acting force can be generated on the anchor rod 24 after the pull rod is linked.
The technical effect that above-mentioned technical scheme directly brought is, simple structure, convenient to use, adjust in a flexible way, utilize the assembler of the slight shock sensor of pretension installation of above-mentioned technical scheme, labour saving and time saving can increase substantially the operating efficiency.
More preferably, the overall size of the explosion-proof housing 19 is (200mm-500mm) length, width, height, (200mm-500mm) 50mm-100mm, and the wall body is a hollow structure, and the wall thickness is 3mm, so as to play the role of explosion-proof;
further preferably, the internal rotation cavity 14 has a structure with a large upper part and a small lower part, the large diameter is 50mm-100mm60mm, the small diameter is 30mm-80mm, and the wall thickness is 2mm-10 mm.
The technical effect brought by the technical scheme is that the mounting requirement of the common anchor rod 24 with the diameter of 25mm in a coal mine can be met, and meanwhile, the reasonable utilization rate of the anchoring agent is ensured;
the technical effect that above-mentioned technical scheme directly brought is that, whole electrified explosion-proof just makes things convenient for constructor to carry, alleviates workman intensity of labour, improves work efficiency.
Further preferably, cutting ferrule 7 be the arc setting, can require to change at any time according to the radian of stock 24, for the reinforcing grip, the contact surface of cutting ferrule 7 is zigzag undulation.
The technical effect that above-mentioned technical scheme directly brought is that the changeable environmental requirement of mine downhole production can be satisfied in the non-global design of cutting ferrule 7, and the tortuous undulation contact surface guarantees firmly promptly with stock 24 simultaneously, prevents to reflect not hard up.
Further preferably, the pull rod 3 is provided with a pull rod clamping seat 3-1 so as to fix the fastening arm 4 at a specific position at any time by utilizing the clamping arm 6.
The technical effect that above-mentioned technical scheme directly brought is, can realize extruding the utilization to the anchoring agent, provides effectual workspace for the interpolation, the stirring of anchoring agent simultaneously.
Further preferably, the ring pad 18, the sealing cushion 8, the anti-seepage pad 16 and the sealing strip 28 are all made of rubber materials, and are used for reducing friction and protecting the safety of accessories.
More preferably, the sealing chassis 21 is fixed at the lower part of the bolt hole 30 by a screw 22, and can be replaced at any time according to the requirement of an exposed thread of a sensor bolt;
the technical effect that above-mentioned technical scheme directly brought is, can satisfy the applicable condition of different slight shock sensor bolt installations, improves the utilization space of assembler.
Preferably, the explosion-proof housing 19 is integrally provided with an external ring, so that when the gripping force of the fastening pliers is insufficient, the iron bars and the roadway inner wall anchor rods 24 can be further fastened.
The invention has the beneficial effects that: the equipment provided by the invention has the beneficial effects of simple structure, flexible device adjustment, high working efficiency, time and labor saving, good installation effect, relatively low construction cost and the like.
Drawings
FIG. 1 is a front sectional view of an assembler for pre-tightening and mounting a microseismic sensor on an underground coal mine anchor rod;
FIG. 2 is a top view of an assembler for pre-tightening and installing a microseismic sensor on an underground coal mine anchor rod;
FIG. 3 is an installation schematic diagram of an assembler for pre-tightening and installing a microseismic sensor on an underground coal mine anchor rod;
FIG. 4 is a schematic diagram of energy supply transmission assembly of an assembler for pre-tightening and installing a microseismic sensor on an underground coal mine anchor rod;
FIG. 5 is a schematic diagram of cavity rotation assembly of the assembler for pre-tightening and installing the microseismic sensor on the coal mine underground anchor rod;
FIG. 6 is a schematic view of the assembly of the fastening clamp of the assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod.
In the figure: 1, a pull rod base; 1-1 pull rod spring; 2, an arm base; 2-1 arm spring; 3, a pull rod; 3-1, a pull rod clamping seat; 4 fastening the arm; 5, a chain; 6, clamping an arm; 7, cutting the ferrule; 8, sealing the soft cushion; 9 a housing drive gear; 10 wheel shaft gears; 11, a motor; 12 a power supply; 13 card slots; 14 an internal rotation cavity; 15, folding; 16 an impervious pad; 17 a slide rail; 18 ring pad; 19 an explosion-proof housing; 20 electric wires; 21 sealing the chassis; 22 screws; 23, bolts; 24 anchor rods; 25 connecting rings; 26 rolling a sleeve; 27 a roller; 28 sealing strips; 29 rollers; 30 bolt holes; 31 drive screw.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in figures 1-4, the assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod is characterized by comprising a plurality of units: explosion-proof shell 19, internal rotation cavity 14, energy supply accessory, fastening pincers, each unit comprises a plurality of accessories.
The explosion-proof shell 19 comprises a power supply clamping groove 13, a shell transmission gear 9, a rolling sleeve 26, a rolling shaft 27, a sliding rail 17, a ring gasket 18 and a sealing chassis 21, wherein a bolt hole 30 is reserved on the base of the shell, the shell is a steel bearing structure with a cylindrical hollow middle part, the power supply clamping groove 13 is positioned on the outer side wall, the shell transmission gear 9 is arranged on the upper part and the lower part of the inner wall of the shell 19 by virtue of the rolling sleeve 26 and the rolling shaft 27, the sliding rail 17 is positioned at the end part of the hollow base close to the inner wall, the ring gasket 18 is arranged on the inner wall surface of the bolt hole 30, the sealing chassis 21 is fixed at the lower part of the;
the internal rotation cavity 14 comprises folds 15, transmission threads 31, a roller 29, a sealing cushion 8, an anti-seepage cushion 16 and a sealing strip 28, wherein the folds 15 are arranged on the inner wall of the internal rotation cavity 14, the transmission threads 31 are annularly arranged at the same positions meshed with the shell transmission gear 9, the sealing cushion 8 is positioned at the upper part of the upper fitting gear, between the internal rotation cavity 14 and the gap of the explosion-proof shell 19, the roller 29 rolls in the sliding rail 17, the anti-seepage cushion 16 is arranged at the upper parts of the sliding rail 17 and the roller 29 and is connected with the base and the inner wall of the shell, and the sealing strip 28 is arranged on the upper parts of the roller 29 and the sliding rail 17 and is connected with the sliding rail 17 and attached to;
the energy supply accessory comprises a power supply 12, a motor 11, a wheel shaft gear 10 and an electric wire 20, wherein the power supply 12 is positioned in a clamping groove 13 of the explosion-proof shell 19, and the wheel shaft gear 10 is connected with the motor 11 through the electric wire 20 to rotate so as to rotate the shell transmission gear 9;
the motor 11 drives the wheel shaft gear 10 to rotate and transmit the rotation to the shell transmission gear 9, then the rotation of the internal rotation cavity 14 is realized through the transmission thread 31, and the stirring of the anchoring agent is realized by means of the inner wall wrinkles 15;
the fastening pliers comprise a pull rod 3, a fastening arm 4, a chain 5, a clamping arm 6, a pull rod base 1, an arm base 2, a clamping sleeve 7, springs 1-1 and 2-1 and a connecting ring 25, wherein the pull rod base 1 and the arm base 2 are arranged at the top of a shell, the pull rod 3 and the fastening arm 4 are in a pre-tightening force state through the connecting base springs, the clamping arm 6 is arranged on the arm base 2 and can swing at 180 degrees, and the fastening arm 4 with the clamping sleeve 7 arranged at the end part is connected with the pull rod 3 through the chain 5 and the connecting ring 25;
the pull rod 3 is linked to fasten the arm 4, and the arm 4 in the initial state is horizontally in a state that the spring 2-1 is loosened, so that the pull rod 3 can generate a larger pre-tightening acting force to the anchor rod 24 after being linked.
The whole size of the explosion-proof housing 19 is 200mm, 80mm, the wall body is a hollow structure, and the wall surface is 3mm in thickness, so that the explosion-proof housing plays a role in explosion prevention;
the internal rotation cavity 14 is of a structure with a large upper part and a small lower part, the large diameter of the middle hole is 60mm, the small diameter of the middle hole is 40mm, and the wall thickness is 2 mm.
The technical effect brought by the technical scheme is that the mounting requirement of the common anchor rod with the diameter of 25mm in a coal mine can be met, and meanwhile, the reasonable utilization rate of the anchoring agent is ensured;
the technical effect that above-mentioned technical scheme directly brought is that, whole electrified explosion-proof just makes things convenient for constructor to carry, alleviates workman intensity of labour, improves work efficiency.
Cutting ferrule 7 be the arc setting, can require to change at any time according to the radian of stock, for the reinforcing grip, the contact surface of cutting ferrule 7 is tortuous undulation.
The technical effect that above-mentioned technical scheme directly brought is, the changeable environmental requirement of mine downhole production can be satisfied in the non-global design of cutting ferrule 7, and the tortuous undulation contact surface guarantees firmly promptly with the stock simultaneously, prevents that the reflection is not hard up.
The pull rod 3 is provided with a clamping seat 3-1 so as to fix the fastening arm 4 at a specific position at any time by utilizing the clamping arm 6.
The technical effect that above-mentioned technical scheme directly brought is, can realize extruding the utilization to the anchoring agent, provides effectual workspace for the interpolation, the stirring of anchoring agent simultaneously.
The ring pad 18, the sealing soft pad 8, the anti-seepage pad 16 and the sealing strip 28 are all made of rubber materials and used for reducing friction and protecting the safety of accessories.
The sealing chassis 21 is fixed at the lower part of the bolt hole 30 by a screw 22 and can be replaced at any time according to the requirement of exposed threads of the sensor bolt;
the technical effect that above-mentioned technical scheme directly brought is, can satisfy the applicable condition of different slight shock sensor bolt installations, improves the utilization space of assembler.
The whole explosion-proof shell 19 is provided with an external ring, and can be further fastened by utilizing an iron bar and an anchor rod on the inner wall of the roadway when the gripping force of the fastening pliers is insufficient.
Claims (8)
1. An assembler for pre-tightening and mounting a microseismic sensor on an underground coal mine anchor rod is characterized by comprising an explosion-proof shell (19), an internal rotation cavity (14), an energy supply accessory and fastening pliers;
the explosion-proof shell (19) comprises a clamping groove (13), a shell transmission gear (9), a rolling sleeve (26), a rolling shaft (27), a sliding rail (17), a ring pad (18) and a back cover plate (21); a bolt hole (30) is reserved on the base of the explosion-proof shell (19), the explosion-proof shell (19) is of a steel bearing structure with a cylindrical hollow middle part, the clamping groove (13) is positioned on the outer side wall, the shell transmission gear (9) is arranged on the upper and lower parts of the inner wall of the explosion-proof shell (19) by means of a rolling sleeve (26) and a rolling shaft (27), the sliding rail (17) is positioned at the end part, close to the inner wall, of the hollow base of the explosion-proof shell (19), the ring pad (18) is arranged on the inner wall surface of the bolt hole (30), and the sealing chassis (21) is fixed on the lower part of the bolt hole and forms a designated;
the internal rotation cavity (14) comprises folds (15), transmission threads (31), a roller (29), a sealing cushion (8), an anti-seepage cushion (16) and a sealing strip (28); the wrinkles (15) are arranged on the inner wall of the internal rotation cavity (14), the transmission threads (31) are annularly arranged at the same positions meshed with the shell transmission gear (9), the sealing cushion (8) is positioned at the upper part of the upper shell transmission gear (9) and in the gap between the internal rotation cavity (14) and the explosion-proof shell (19), the roller (29) rolls in the sliding rail (17), the anti-seepage cushion (16) is arranged at the upper parts of the sliding rail (17) and the roller (29) and is connected with the base and the inner wall of the shell, and the sealing strips (28) are arranged at the upper parts of the roller (29) and the sliding rail (17), are connected with the sliding rail (17) and are attached to the wall of the internal rotation cavity (14);
the energy supply accessory comprises a power supply (12), a motor (11), a wheel shaft gear (10) and an electric wire (20); the power supply (12) is positioned in a clamping groove (13) of the explosion-proof shell (19) and is connected with the motor (11) by using a wire (20), the motor (11) is connected with the wheel shaft gear (10), and the wheel shaft gear (10) is connected with the shell transmission gear (9); the rotation of the wheel shaft gear (10) is realized by starting the motor (11), and further the rotation of the shell transmission gear (9) is realized;
the fastening pliers comprise a pull rod (3), a fastening arm (4), a chain (5), a clamping arm (6), a pull rod base (1), an arm base (2), a clamping sleeve (7), a pull rod spring (1-1), an arm spring (2-1) and a connecting ring (25); the pull rod base (1) and the arm base (2) are arranged at the top of the explosion-proof shell (19), the pull rod (3) and the fastening arm (4) are in a pretightening force state through the connecting pull rod spring (1-1) and the arm spring (2-1), the clamping arm (6) is arranged on the arm base (2) and can swing 180 degrees, and the fastening arm (4) with the clamping sleeve (7) at the end is connected with the pull rod (3) through the chain (5) and the connecting ring (25).
2. The assembler for pre-tightening and installing the micro-seismic sensor on the underground coal mine anchor rod according to claim 1, wherein the overall size of the explosion-proof shell (19) is 200mm-500mm (200mm-500mm) and 50mm-100mm, the wall body is a hollow structure, and the wall surface is 3mm thick, so that the explosion-proof effect is achieved.
3. The assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod according to claim 1 or 2, wherein the internal rotation cavity (14) is of a structure with a large upper part and a small lower part, the large diameter is 50mm-100mm, the small diameter is 30mm-80mm, and the wall thickness is 2mm-10 mm.
4. The assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod according to claim 1 or 2, which is characterized in that the clamping sleeve (7) is arranged in an arc shape and can be replaced at any time according to the radian requirement of the anchor rod (24), and the contact surface of the clamping sleeve (7) is in a zigzag undulation shape.
5. The assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod according to claim 1 or 2, which is characterized in that a pull rod clamping seat (3-1) is arranged on the pull rod (3) so as to fix the fastening arm (4) at a specific position at any time by utilizing a clamping arm (6).
6. The assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod according to claim 1 or 2, wherein the ring pad (18), the sealing cushion (8), the anti-seepage pad (16) and the sealing strip (28) are made of rubber materials.
7. The assembler for pre-tightening and installing the microseismic sensor on the underground coal mine anchor rod according to claim 1 or 2, wherein the sealing chassis (21) is fixed at the lower part of the bolt hole (30) by using a screw (22).
8. The assembler for pre-tightening and installing the micro-seismic sensor on the underground coal mine anchor rod according to claim 1 or 2, wherein an external ring is reserved on the whole of the explosion-proof shell (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886421.1A CN110596750B (en) | 2019-09-19 | 2019-09-19 | Assembler for pre-tightening and mounting micro-seismic sensor on underground coal mine anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910886421.1A CN110596750B (en) | 2019-09-19 | 2019-09-19 | Assembler for pre-tightening and mounting micro-seismic sensor on underground coal mine anchor rod |
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| Publication Number | Publication Date |
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| CN110596750A true CN110596750A (en) | 2019-12-20 |
| CN110596750B CN110596750B (en) | 2021-01-26 |
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| CN201910886421.1A Expired - Fee Related CN110596750B (en) | 2019-09-19 | 2019-09-19 | Assembler for pre-tightening and mounting micro-seismic sensor on underground coal mine anchor rod |
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| CN111878060A (en) * | 2020-08-14 | 2020-11-03 | 中煤科工集团重庆研究院有限公司 | Installation device and method for monitoring sensor in coal rock stratum drilling hole |
| CN114527504A (en) * | 2022-02-28 | 2022-05-24 | 东北大学 | Drilling embedded type sensor installation, fixation and recovery integrated device |
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