CN114109269B - Automatic positioning device for tunneling blasting drilling and using method thereof - Google Patents
Automatic positioning device for tunneling blasting drilling and using method thereof Download PDFInfo
- Publication number
- CN114109269B CN114109269B CN202111449238.9A CN202111449238A CN114109269B CN 114109269 B CN114109269 B CN 114109269B CN 202111449238 A CN202111449238 A CN 202111449238A CN 114109269 B CN114109269 B CN 114109269B
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- frame
- drilling
- automatic positioning
- air pipe
- blasting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
Abstract
The invention discloses an automatic positioning device for tunnel tunneling blasting drilling, which relates to the technical field of rock tunneling. The invention detects and determines the position of the blasting drilling hole through the positioning probe arranged on the drilling frame, transmits the received signal to the external control device through the signal receiving and transmitting device, analyzes the received signal, transmits the instruction to the driving device on the equipment, further adjusts and determines the alignment position of the drill bit on the drilling equipment, realizes the automatic positioning function, and can provide a buffering force which is stable left and right when the drilling equipment works, further stably improves the accuracy of the drilling hole when the drilling equipment works, and provides a favorable guarantee for the tunneling blasting work of the subsequent roadway.
Description
Technical Field
The invention relates to the technical field of rock tunneling, in particular to an automatic positioning device for tunneling blasting drilling.
Background
Coal mine tunnel excavation is the work of excavating wells, tunnels and chambers with various shapes, sections or criss-cross in a rock (soil) layer or a mineral layer. The tunneling process is divided into a main process and an auxiliary process. The main working procedures are the working procedures of directly finishing the progress of the working face on the working face and the supporting operation carried out in the tunnel tunneling area. The main process is determined by the nature of the rock through which the roadway passes. When tunneling hard rock, the main working procedures include drilling, charging, blasting, ventilation and safety inspection of working face, rock charging and roadway support, and the basic working procedures for tunneling soft rock include: digging rock, loading rock and supporting. If the method such as the pneumatic pick and the combined machine is adopted for digging, the digging operation has the characteristic of continuous operation.
With the progress of scientific technology, engineering blasting technology is advancing toward a refinement target. In particular, the underground large-diameter deep hole blasting technology is widely applied to underground metal mines, so that the quality of drilling holes plays a decisive role in blasting effect. For deep blastholes, the rock drilling error with high strength can be controlled within half a meter; but a low strength rock may deviate by one or two meters. If the position of the blast hole deviates too much from the design requirement, the direction and the size of a blast hole resistance line can be changed, and then the blasting parameters such as hole pitch, row pitch and the like are changed, so that a large amount of large blocks and flying stones are generated, and the blasted working surface is rugged.
The existing means are used for determining the drilling position through subjective experience judgment of staff, so that potential safety hazards caused by insufficient blasting drilling precision are avoided. The invention provides an automatic positioning device for tunneling blasting drilling so as to solve the problems in the background technology.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an automatic positioning device for tunneling blasting drilling.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the automatic positioning device comprises a drilling frame and drilling equipment, wherein a movable frame is arranged on the drilling frame, a device frame is arranged on the front side of the movable frame, a mounting frame is arranged on the device frame, the drilling equipment is fixedly arranged on the front side of the mounting frame, an air pipe II is fixedly arranged on the left lower side and the right lower side of the device frame, an air pipe I is arranged on the lower side of the air pipe II, a push rod II is connected in the air pipe I, and stabilizing frames are arranged on the left side and the right side of the device frame;
the left side and the right side of the mounting frame are respectively provided with a spray pipe, the front end of the spray pipe is provided with a valve body, the front side of the drilling equipment is provided with a heat conducting cavity, the left side and the right side of the heat conducting cavity are respectively provided with an air pipe III, and a transmission rod is arranged between each air pipe III and the upper side of the valve body;
the valve body upside is provided with the gear of being connected with inside valve block, transfer line one side is provided with the tooth's socket of corresponding gear, and transfer line week side is provided with spring one, just the one end of transfer line is connected with the piston that is located the trachea three.
Preferably, the moving frame slides on the drilling frame left and right, and an X-axis linear driving device is arranged on the moving frame.
Preferably, the device frame slides up and down on the front side of the moving frame, and a Z-axis linear driving device is arranged on the moving frame.
Preferably, the mounting frame slides back and forth on the device frame, and a Y-axis linear driving device is arranged between the device frame and the rear side of the mounting frame.
Preferably, the downside of mounting bracket is connected with the push pedal that is located the device frame below, push pedal front side both ends all are connected with the push rod one that is located the trachea two, just push rod one front end is connected with the piston.
Preferably, the first air pipe is connected to the lower side of the second air pipe, an air hose is arranged between the first air pipe and the second air pipe, one end of the second push rod is connected to the device frame in a connected mode, a second spring is arranged on the peripheral side of the second push rod, and a piston located in the first air pipe is arranged at one end of the second push rod.
Preferably, the stabilizer is connected to the device frame, a torsion spring is arranged at the connection position of the stabilizer, and a chute for the push plate is arranged in the stabilizer.
Preferably, the upper side of the valve body is provided with a gear connected with the internal valve plate, one side of the transmission rod is provided with a tooth slot corresponding to the gear, the peripheral side of the transmission rod is provided with a first spring, and one end of the transmission rod is connected with a piston positioned in a third air pipe.
The application method of the automatic positioning device for the tunneling blasting drilling is characterized by comprising the following steps of:
step one: the location of the blasted borehole is determined by probing with a positioning probe mounted on the drill carriage, the probe containing an accurate inclinometer, the measurement information being stored by a probe storage unit. The probe also contains a real-time clock which is used to time-identify the recorded data. The range of sensor operation is 90 deg. + -45 deg., within which the probe can be placed up or down, if more than 90 deg. + -45 deg., the probe will return the reading to "zero" and the probe is self-powered;
step two: the data is downloaded from the CDU-through the CDU from the probe to the computer serial port;
step three: the alignment position of the drill bit on the drilling equipment is adjusted and determined through the linear driving device on the equipment, so that an automatic positioning function is realized, and the function of a Control Display Unit (CDU) in the control device is to record the measurement time of each probe and record data.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention detects and determines the position of the blasting drilling hole through the positioning probe arranged on the drilling frame, transmits the position to the external control device through the signal receiving and transmitting device, analyzes the received signal by the control device, and transmits an instruction to the driving device on the equipment, so as to adjust and determine the aligned position of the drill bit on the drilling equipment, and realize the automatic positioning function;
2. when the drilling equipment works, the first air pipe is matched with the push rod and the second spring on the periphery of the push rod to play a role in up-down buffering and damping, so that the up-down stability of the drilling equipment is improved, the drilling equipment can work more stably and orderly, the stabilizing frame with a left-right structure can provide a buffering force which is stable left and right when the drilling equipment works, the accuracy of drilling blast holes is improved more stably when the drilling equipment works, and a favorable guarantee is provided for the tunneling and blasting work of a subsequent roadway;
3. according to the automatic water spraying and cooling structure, the first spraying pipe which is externally connected with the water source is arranged on the two sides of the drilling equipment, when the temperature of the drill bit is increased, the transmission rod is pushed to move outwards, the gear connected with the upper side of the valve body is meshed and transmitted, so that the valve body is rotated, the valve body is opened, water can be introduced to spray out automatically, the surface of the drill bit is sprayed with water for cooling, the drill bit is kept in a normal continuous working state, the drilling efficiency of the equipment is improved, and the problem that workers are inconvenient to cool the drill bit in an extreme working environment is avoided.
Drawings
Fig. 1 is a schematic structural diagram of an automatic positioning device for tunnelling blasting drilling;
fig. 2 is a schematic structural diagram II of an automatic positioning device for tunneling blasting drilling;
fig. 3 is a schematic diagram of a connection structure of a heat conducting cavity in the automatic positioning device for tunneling blasting and drilling provided by the invention;
fig. 4 is a schematic diagram of a connection structure of a second air pipe in the automatic positioning device for tunneling blasting and drilling provided by the invention;
fig. 5 is a schematic diagram of a connection structure of a mounting frame in the automatic positioning device for tunnelling blasting drilling;
fig. 6 is a schematic structural diagram of a control principle of the automatic positioning device for tunneling blasting drilling.
In the figure: 1. a drilling frame; 2. a moving rack; 3. a device rack; 4. an X-axis linear driving device; 5. a Y-axis linear driving device; 6. a Z-axis linear driving device; 7. drilling equipment; 8. a drill bit; 9. a spray pipe; 10. a stabilizing rack; 11. a piston; 12. a first air pipe; 13. a second air pipe; 14. a heat conducting cavity; 15. a third air pipe; 16. a gear; 17. a transmission rod; 18. a first spring; 19. a push rod I; 20. a ventilation hose; 21. a second push rod; 22. a second spring; 23. a push plate; 24. and (5) mounting a frame.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-6, an automatic positioning device for tunnel tunneling blasting and drilling comprises a drilling frame 1 and a drilling device 7, and is characterized in that the drilling frame 1 is provided with a moving frame 2, the front side of the moving frame 2 is provided with a device frame 3, the device frame 3 is provided with a mounting frame 24, the drilling device 7 is fixedly arranged on the front side of the mounting frame 24, the moving frame 2 slides left and right on the drilling frame 1, an X-axis linear driving device 4 is arranged on the moving frame 2, the device frame 3 slides up and down on the front side of the moving frame 2, a Z-axis linear driving device 6 is arranged on the moving frame 2, the mounting frame 24 slides back and forth on the device frame 3, a Y-axis linear driving device 5 is arranged between the device frame 3 and the rear side of the mounting frame 24, the position of the blasting drilling hole is detected and determined through a positioning probe arranged on the drilling frame 1, the positioning probe is transmitted to an external control device through a signal receiving and transmitting device, the control device analyzes a received signal and transmits an instruction to a driving device on equipment, the position of the alignment of a drill bit 8 on the drilling equipment 7 is further adjusted and determined, an automatic positioning function is realized, the control device controls an X-axis linear driving device 4 on a movable frame 2 to control the movable frame 2 and equipment on the movable frame 1 to move left and right, the transverse position of the drilling equipment 7 is further determined, and a Z-axis linear driving device 6 on a device frame 3 is used to control the device frame 3 and equipment on the movable frame 2 to move left and right, so that the up and down position of the drilling equipment 7 is further determined;
further, the left lower side and the right lower side of the device frame 3 are fixedly provided with an air pipe II 13, the lower side of the mounting frame 24 is connected with a push plate 23 positioned below the device frame 3, two ends of the front side of the push plate 23 are connected with a push rod I19 positioned in the air pipe II 13, the front end of the push rod I19 is connected with a piston, the lower side of the air pipe II 13 is provided with an air pipe I12, the air pipe I12 is internally connected with a push rod II 21, the air pipe I12 is connected to the lower side of the air pipe II 13 in a switching manner, an air hose 20 is arranged between the air pipe I12 and the air pipe II 13, one end of the push rod II 21 is connected to the device frame 3, a spring II 22 is arranged on the peripheral side of the push rod II 21, one end of the push rod II 21 is provided with a piston positioned in the air pipe I12, after the drilling position of the drilling equipment 7 is determined, the control device controls the Y-axis linear driving device 5 to work, the Y-axis linear driving device controls the drilling equipment 7 mounted on the mounting frame 4 to move forwards, the drilling equipment 7 is controlled by the control device 7 to work, the front side of the drilling bit 8 starts to perform drilling work, the drilling work, when the drilling equipment 7 on the 4 is controlled by the Y-axis linear driving device 7 to move forwards, the air pipe I23 is connected with the air pipe II 19 to the air pipe II 12 and the air pipe II is connected to the front side of the air pipe II 12, the drilling equipment is further increased in order of the accuracy is increased, and the drilling equipment is increased, the accuracy is increased when the drilling equipment is in the drilling equipment is moved by the air hole equipment and the air hole equipment 12 and the air hole equipment is moved to the front and the air pipe 19 and the front and is more stable;
furthermore, the stabilizer frames 10 are arranged at the left side and the right side of the device frame 3, the stabilizer frames 10 are connected to the device frame 3 in a switching way, torsion springs are arranged at the switching positions of the stabilizer frames 10, a chute for the push plate 23 is formed in the stabilizer frames 10, when the drilling equipment 7 on the mounting frame 4 is controlled to move forwards by the Y-axis linear driving device, the push plate 3 connected with the lower side of the mounting frame 24 is driven to move forwards, the push plate 3 which moves forwards pushes the stabilizer frames 10 which are connected to the device frame 3 at the two sides, and as the torsion springs are arranged at the switching positions of the stabilizer frames 10, the stabilizer frames 10 at the two sides are stronger for the extrusion of the push plate 23 along with the distance of the forward movement of the drilling equipment 7, so that the stabilizer frames 10 with a left-right structure can provide a buffer force for the left-right stability when the drilling equipment 7 works, the accuracy of drilling blast holes is more stably improved when the drilling equipment 7 works, and a favorable guarantee is provided for the blasting work of subsequent roadways;
still further, spray tube 9 is all installed to mounting bracket 24 left and right sides, valve body 11 is installed to spray tube 9 front end, heat conduction cavity 14 is installed to drilling equipment 7 front side, heat conduction cavity 14 left and right sides all is provided with trachea three 15, be provided with transfer line 17 between trachea three 15 and the valve body 11 upside, valve body 11 upside is provided with the gear 16 of being connected with inside valve block, transfer line 17 one side is provided with the tooth's socket of corresponding gear 16, and transfer line 17 week side is provided with spring one 18, and the one end of transfer line 17 is connected with the piston that is located trachea three 15, the spray tube 9 of this drilling equipment 7 both sides installation communicates and has external water pipe, and constantly keep the state of high-pressure water, when drilling equipment 7 carries out the big gun hole drilling, drill bit 8 temperature can rise, and install in the heat conduction cavity 14 of drilling equipment 7 front side can fully absorb the heat that drill bit 8 produced, make the inside liquid boiling gasification of heat conduction cavity 14, steam gets into in the trachea three 15 of both sides leading to heat conduction cavity 14, make the transfer line 17 that is located in trachea three 15 outside promote outwards, transfer line 17 outside, transfer line 17 is moved outwards when being promoted outside, one side is moved outwards, it is connected with gear 16, make the valve body 16 make the valve body rotate, make the normal state of cooling down, make the drilling equipment keep the face of water continuous, and make the drilling equipment rotate, and make the face of the valve body keep the face of the drilling, and keep the face of the drilling equipment is opened.
The specific working principle of the invention is as follows:
the automatic positioning device needs an external control device to control and operate a driving device in equipment, and comprises the following specific operation steps:
the position of the blasted drilling hole is detected and determined through a positioning probe arranged on the drilling frame 1, the blasted drilling hole is transmitted to an external control device through a signal receiving and transmitting device, the control device analyzes a received signal and then transmits an instruction to a driving device on equipment, and the aligned position of a drill bit 8 on the drilling equipment 7 is adjusted and determined, so that an automatic positioning function is realized;
the control device controls the X-axis linear driving device 4 on the movable frame 2 to control the movable frame 2 and the upper equipment thereof to move left and right on the drilling frame 1 so as to determine the transverse position of the drilling equipment 7, and controls the device frame 3 and the upper equipment thereof to move left and right on the movable frame 2 through the Z-axis linear driving device 6 on the device frame 3 so as to determine the up-down position of the drilling equipment 7;
after the drilling position of the drilling equipment 7 is determined, the Y-axis linear driving device 5 is controlled to work by the control device, the drilling equipment 7 mounted on the mounting frame 4 is controlled to move forwards by the Y-axis linear driving device, the drilling equipment 7 is controlled to work by the control device, the drill bit 8 at the front side of the drilling equipment 7 starts to drill, when the drilling equipment 7 on the mounting frame 4 is controlled to move forwards by the Y-axis linear driving device, the push rod 19 connected with the two ends of the front side of the push plate 23 moves forwards, air in the air pipe II 13 is extruded into the air pipe I12 through the ventilation hose 20, the air density in the air pipe I12 gradually increases along with the advancing distance of the drilling equipment 7, and when the drilling equipment 7 works, the air pipe I12 is matched with the push rod II 21 and the spring II 22 at the periphery of the push rod II 21, so that the up-down buffering and damping effects can be achieved, the up-down stability of the drilling equipment 7 is further improved, the drilling equipment is enabled to work more stably and orderly, and the drilling accuracy of the equipment is improved;
when the drilling equipment 7 on the mounting frame 4 is controlled to move forwards by the Y-axis linear driving device, the push plate 3 connected with the lower side of the mounting frame 24 is driven to move forwards, the push plate 3 which moves forwards presses the stabilizing frames 10 which are connected to the device frame 3 at two sides, and as torsion springs are arranged at the connecting positions of the stabilizing frames 10, the pressing of the stabilizing frames 10 on the push plate 23 at two sides is stronger along with the farther forward moving distance of the drilling equipment 7, and the stabilizing frames 10 with a left-right structure can provide a buffering force for stabilizing the left side and the right side of the drilling equipment 7 when the drilling equipment 7 works, so that the accuracy of drilling blast holes is more stably improved when the drilling equipment 7 works, and a favorable guarantee is provided for tunneling and blasting work of a subsequent roadway;
the spray pipe 9 that this drilling equipment 7 both sides were installed is linked together and is had external water pipe, and keep the state of high pressure water-passing constantly, when drilling equipment 7 carries out the big gun hole drilling, drill bit 8 temperature can rise, and install in the heat conduction chamber 14 of drilling equipment 7 front side can fully absorb the heat that drill bit 8 produced, make the inside liquid boiling gasification of heat conduction chamber 14, steam gets into in the trachea three 15 of heat conduction chamber 14 is let in to both sides, make the transfer line 17 that is located trachea three 15 promote outwards move, transfer line 17 is when being promoted outwards move, the gear 16 that one side and valve body upside are connected takes place the meshing transmission, the valve body internal valve piece is led to rotate, make the valve body open, the water-passing can be automatic blowout, carry out watering cooling to drill bit 8 surface, make the drill bit keep normal continuous operating condition, improve the drilling efficiency of equipment, the automatic water spray cooling structure that this equipment set up, the problem that the staff was inconvenient to carry out the drill bit cooling under extreme operational environment has been avoided.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a tunnel excavation blasting drilling automatic positioning device, includes drilling frame (1) and drilling equipment (7), its characterized in that, be provided with on drilling frame (1) and remove frame (2), it is provided with device frame (3) to remove frame (2) front side, be provided with mounting bracket (24) on device frame (3), drilling equipment (7) fixed mounting is in mounting bracket (24) front side, the left side downside and the right side downside of device frame (3) are all fixed mounting have trachea two (13), trachea two (13) downside is provided with trachea one (12), be connected with push rod two (21) in trachea one (12), device frame (3) left and right sides all are provided with stabilizing frame (10);
the novel steam turbine is characterized in that the spray pipes (9) are arranged on the left side and the right side of the mounting frame (24), the valve body (11) is arranged at the front end of the spray pipes (9), the heat conducting cavity (14) is arranged on the front side of the drilling equipment (7), the air pipes (15) are arranged on the left side and the right side of the heat conducting cavity (14), the air pipes (15) are communicated with the heat conducting cavity (14), liquid capable of being gasified by boiling is arranged in the heat conducting cavity (14), and a transmission rod (17) is arranged between the air pipes (15) and the upper side of the valve body (11);
the valve is characterized in that a gear (16) connected with the internal valve plate is arranged on the upper side of the valve body (11), a tooth slot corresponding to the gear (16) is arranged on one side of the transmission rod (17), a first spring (18) is arranged on the peripheral side of the transmission rod (17), and a piston positioned in the air pipe III (15) is connected to one end of the transmission rod (17).
2. The automatic positioning device for tunnelling blasting drilling according to claim 1, wherein the movable frame (2) slides on the drilling frame (1) left and right, and an X-axis linear driving device (4) is mounted on the movable frame (2).
3. The automatic positioning device for tunnelling blasting drilling according to claim 1, wherein the device frame (3) slides up and down on the front side of the moving frame (2), and a Z-axis linear driving device (6) is arranged on the moving frame (2).
4. The automatic positioning device for tunneling blasting drilling according to claim 1, wherein the mounting frame (24) slides back and forth on the device frame (3), and a Y-axis linear driving device (5) is arranged between the device frame (3) and the rear side of the mounting frame (24).
5. The automatic positioning device for tunneling blasting drilling according to claim 1, wherein a push plate (23) positioned below the device frame (3) is connected to the lower side of the mounting frame (24), a first push rod (19) positioned in a second air pipe (13) is connected to two ends of the front side of the push plate (23), and a piston is connected to the front end of the first push rod (19).
6. The automatic positioning device for tunneling blasting and drilling according to claim 1, wherein the first air pipe (12) is connected to the lower side of the second air pipe (13), an air hose (20) is installed between the first air pipe (12) and the second air pipe (13), one end of the second push rod (21) is connected to the device frame (3), a second spring (22) is arranged on the periphery of the second push rod (21), and a piston located in the first air pipe (12) is arranged at one end of the second push rod (21).
7. The automatic positioning device for tunneling blasting drilling according to claim 5, wherein the stabilizer (10) is connected to the device frame (3), a torsion spring is arranged at the connection position of the stabilizer (10), and a chute for the push plate (23) is formed in the stabilizer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449238.9A CN114109269B (en) | 2021-11-30 | 2021-11-30 | Automatic positioning device for tunneling blasting drilling and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449238.9A CN114109269B (en) | 2021-11-30 | 2021-11-30 | Automatic positioning device for tunneling blasting drilling and using method thereof |
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| CN114109269A CN114109269A (en) | 2022-03-01 |
| CN114109269B true CN114109269B (en) | 2023-09-05 |
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| CN202111449238.9A Active CN114109269B (en) | 2021-11-30 | 2021-11-30 | Automatic positioning device for tunneling blasting drilling and using method thereof |
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| CN115056367B (en) * | 2022-08-16 | 2022-11-01 | 昆明理工大学 | Precise drilling and positioning test device for cut blasting |
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|---|---|---|---|---|
| CN104374690A (en) * | 2014-11-13 | 2015-02-25 | 北京工业大学 | Wooden micro drill resistance dynamometer fixing bracket device for field detection of wood members of ancient architectures |
| CN205380293U (en) * | 2016-02-04 | 2016-07-13 | 孝感先源电力有限责任公司 | Automatic cooling dual purpose drilling tool |
| CN111546507A (en) * | 2020-05-14 | 2020-08-18 | 林镇岛 | Punching equipment for building construction and use method thereof |
| CN113700469A (en) * | 2021-09-03 | 2021-11-26 | 玉溪矿业有限公司 | Underground mine roadway tunneling blast hole deviation measuring device and using method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924887B (en) * | 2019-12-03 | 2020-06-30 | 湖南科技大学 | Deep sea submarine drilling rig rope coring and salvaging system and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374690A (en) * | 2014-11-13 | 2015-02-25 | 北京工业大学 | Wooden micro drill resistance dynamometer fixing bracket device for field detection of wood members of ancient architectures |
| CN205380293U (en) * | 2016-02-04 | 2016-07-13 | 孝感先源电力有限责任公司 | Automatic cooling dual purpose drilling tool |
| CN111546507A (en) * | 2020-05-14 | 2020-08-18 | 林镇岛 | Punching equipment for building construction and use method thereof |
| CN113700469A (en) * | 2021-09-03 | 2021-11-26 | 玉溪矿业有限公司 | Underground mine roadway tunneling blast hole deviation measuring device and using method thereof |
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