CN116556851A - Auxiliary equipment is got with fracture structure rock drilling to geological survey - Google Patents
Auxiliary equipment is got with fracture structure rock drilling to geological survey Download PDFInfo
- Publication number
- CN116556851A CN116556851A CN202310718902.8A CN202310718902A CN116556851A CN 116556851 A CN116556851 A CN 116556851A CN 202310718902 A CN202310718902 A CN 202310718902A CN 116556851 A CN116556851 A CN 116556851A
- Authority
- CN
- China
- Prior art keywords
- support frame
- baffle
- fixed
- transmission shaft
- geological survey
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims abstract description 53
- 238000005553 drilling Methods 0.000 title claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 9
- 238000005755 formation reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention relates to auxiliary equipment for drilling broken structural rock for geological survey, which comprises a support frame, wherein two pairs of bearing blocks are symmetrically arranged on the side wall of the support frame, sealing bearings are embedded in the two pairs of bearing blocks, a transmission shaft is clamped and connected with the sealing bearings in each pair of bearing blocks, a supporting component is fixedly arranged on the surface of one transmission shaft, a clamping component is fixedly arranged on the surface of the other transmission shaft, and the supporting component and the clamping component are used for fixing the support frame and the ground. According to the invention, the support assembly and the clamping assembly are arranged, the clamping assembly can drive the pressing plate to move downwards, so that the pressing plate is clamped in the preset groove on the rock stratum, and after the clamping assembly is clamped, the support assembly is driven to move, so that the top plate is pushed to start moving, the drill bit is clamped in the rock stratum, and the whole support frame is lifted, so that the stability of the auxiliary device is improved, the work of the later sampling equipment is facilitated, and the device is suitable for wide popularization and use.
Description
Technical Field
The invention relates to the technical field of geological prospecting, in particular to auxiliary equipment for drilling fracture-structure rock for geological exploration.
Background
In the geological exploration process, the geological body is often required to be drilled and sampled. Where geological environments of fractured rock formations are encountered during surveys of some areas, there are many bare rock formations, and often many rock walls, involved in sampling the fractured rock formations.
Now, for drilling and sampling of rock walls, the main equipment is a drilling device capable of carrying rock samples to exit, firstly, a drill bit of the drilling device is required to be drilled into the rock walls to a certain depth, and the drill bit can carry samples when exiting, so that rock stratum sampling is conveniently carried out from the inside of a hole, and in use, in order to reduce the labor load increase caused by manual holding of the drilling device, a plurality of auxiliary drilling supports are arranged, and the drilling device can be placed when in operation.
However, many auxiliary brackets today have a simple rigid metal frame as a main structure and are directly placed on the ground, but the drilling process finds that, due to the fact that hardness of some rock layers is too high and for fracture of a rock body, due to the fact that more faults exist in the rock layers, obvious layering exists in the rock layers, gaps exist among part of the layering, physical properties of the rock layers are unevenly distributed, the drilling sampling device can vibrate greatly in the drilling process, the whole auxiliary bracket shakes in the drilling process, and due to the fact that the drilling device has a tendency to move towards the inside of a hole, the auxiliary bracket for installing the drilling device has a tendency to move outwards due to force interaction, so that the auxiliary bracket is unstable and drilling is affected.
Disclosure of Invention
The invention aims to provide auxiliary equipment for drilling broken structural rock for geological exploration, which solves the problem of unstable auxiliary brackets.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the auxiliary equipment for drilling the fracture structure rock for geological survey comprises a support frame, wherein two pairs of bearing blocks are symmetrically arranged on the side wall of the support frame, sealing bearings are embedded in the two pairs of bearing blocks, a transmission shaft is clamped and connected to the sealing bearings in each pair of bearing blocks, a supporting component is fixedly arranged on the surface of one transmission shaft, and a clamping component is fixedly arranged on the surface of the other transmission shaft; the supporting component comprises a top plate, wherein the top plate is fixedly arranged on the side wall of one transmission shaft, and the top plate is inclined downwards; the clamping assembly comprises a pressing plate, a connecting seat is fixedly arranged on the upper surface of the pressing plate, a second hydraulic push rod is movably arranged on the surface of the connecting seat, and the second hydraulic push rod is fixedly arranged on the side wall of the other transmission shaft.
According to the auxiliary assembly is got to fracture structure rock drilling for geological survey, support frame upper surface corner fixedly is provided with the bracing piece, the terminal fixed mounting platform that is provided with of bracing piece, mounting platform fixed surface is provided with two relative parallel mounting rail, the fixed universal wheel that is provided with in support frame bottom.
According to the auxiliary assembly is got to fracture structure rock drilling for geological survey, the roof end evenly fixedly is provided with a plurality of augers, and is located the support frame lateral wall fixed being provided with of auger one side and fixes a position baffle, just the position baffle is 7 word boards, just the roof is higher than the bottom edge of universal wheel.
According to geological survey with fracture structure rock drilling auxiliary assembly, the support frame lateral wall is fixed to be provided with the curb plate, and curb plate fixed surface is provided with first hydraulic push rod, and the fixed chopping block that is provided with in first hydraulic push rod end, and the chopping block surface cup joints and is provided with the antiskid cover.
According to geological survey with fracture structure rock drilling auxiliary assembly, clamp plate upper surface fixed is provided with the sleeve, the inside installation cavity that has seted up of sleeve, the inside slip of installation cavity is provided with first baffle, and first baffle diameter is greater than telescopic exit diameter, first baffle central point puts fixedly and is provided with the connecting rod, connecting rod lateral wall activity grafting sleeve lateral wall, the terminal fixed telescopic link that is provided with of connecting rod, the terminal fixed setting of telescopic link is at the support frame lateral wall, the fixed a plurality of antislip strips that are provided with of clamp plate bottom.
According to geological survey with fracture structure rock drilling auxiliary assembly, the fixed drive gear that is provided with of transmission shaft lateral wall, drive gear upper surface meshing is provided with the location rack, just location rack central point puts and is provided with the horizontal pole, horizontal pole central point puts fixed mounting panel that is provided with, and mounting panel surface activity meshing is provided with positioning bolt, just the terminal screw in of positioning bolt sets up on the support frame surface.
According to geological survey with fracture structure rock drilling auxiliary assembly, support frame fixed surface is provided with the locating sleeve, and the inside countersink that has seted up of locating sleeve, just countersink inside activity is provided with the second baffle, and second baffle central point puts fixedly and is provided with the push rod, and the push rod activity runs through the locating sleeve lateral wall, just the fixed breach that sets up in the horizontal pole bottom that sets up of push rod end.
According to geological survey with fracture structure rock drilling auxiliary assembly, the fixed spacing slider that is provided with of second baffle lateral wall, just spacing slider slides and sets up on spacing slide rail surface, just spacing slide rail slides and sets up at countersink lateral wall, just second baffle bottom and countersink bottom are fixed to be provided with extrusion spring, and extrusion spring is compression spring.
Compared with the prior art, the invention has the following beneficial effects:
according to the auxiliary equipment for rock drilling with the fracture structure for geological survey, the supporting component and the clamping component are arranged, the clamping component can drive the pressing plate to move downwards, so that the pressing plate is clamped in the preset groove on the rock stratum, after the clamping of the clamping component is finished, the supporting component is driven to move, the top plate is pushed to move, the spiral drill is clamped in the rock stratum, the whole supporting frame is lifted, the stability of the auxiliary device is improved, and the operation of the later sampling equipment is facilitated.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a fracture formation rock drilling auxiliary apparatus for geological survey of the present invention;
FIG. 2 is an enlarged view of the fracture formation rock drilling rig of the present invention at A;
FIG. 3 is a cross-sectional view at B of the fracture formation rock drilling rig of the present invention for geological exploration;
FIG. 4 is a schematic three-dimensional schematic diagram of a fracture formation rock drilling rig in accordance with the present invention for geological exploration;
FIG. 5 is an enlarged view of the fracture formation rock drilling rig of the present invention at C;
FIG. 6 is a cross-sectional view at D of a fracture formation rock drilling rig of the present invention for geological exploration;
fig. 7 is a bottom view of a fracture formation rock drilling rig of the present invention for geological exploration.
In the figure: 1. a support frame; 2. a support rod; 3. a mounting platform; 4. installing a guide rail; 5. a side plate; 6. a first hydraulic pushrod; 7. cutting boards; 8. a universal wheel; 9. a bearing seat; 10. a transmission shaft; 11. a top plate; 12. an auger; 13. positioning a baffle; 14. a mounting plate; 15. positioning bolts; 16. a drive gear; 17. positioning a rack; 18. a cross bar; 19. a pressing plate; 20. a second hydraulic pushrod; 21. a connecting seat; 22. a telescopic rod; 23. a sleeve; 24. a mounting cavity; 25. a first baffle; 26. a connecting rod; 27. a notch; 28. a push rod; 29. a positioning sleeve; 30. a countersunk head groove; 31. a second baffle; 32. a limit sliding block; 33. a limit sliding rail; 34. extruding a spring; 35. an anti-slip strip.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a geological survey is with fracture structure rock drilling auxiliary assembly, includes support frame 1, and support frame 1 lateral wall symmetry is provided with two pairs of bearing blocks 9, and two pairs of bearing blocks 9 inside are embedded to be provided with sealed bearing, and the inside sealed bearing joint of every pair of bearing blocks 9 is provided with transmission shaft 10, and one of them transmission shaft 10 fixed surface is provided with supporting component, and another transmission shaft 10 fixed surface is provided with joint subassembly, and supporting component and joint subassembly are used for fixed support frame 1 and ground. The supporting component comprises a top plate 11, the top plate 11 is fixedly arranged on the side wall of one transmission shaft 10, and the top plate 11 is inclined downwards. The clamping assembly comprises a pressing plate 19, a connecting seat 21 is fixedly arranged on the upper surface of the pressing plate 19, a second hydraulic push rod 20 is movably arranged on the surface of the connecting seat 21, and the second hydraulic push rod 20 is fixedly arranged on the side wall of the other transmission shaft 10.
Through being provided with supporting component and joint subassembly, wherein the joint subassembly can drive the clamp plate and carry out the downwardly moving to make the clamp plate card establish the recess that presets on the stratum, and after the joint subassembly joint finishes, drive supporting component and remove, thereby promote the roof and begin to remove, and then make the drill bit joint inside the stratum, and the whole support frame of jacking, thereby improved auxiliary device's stability, the later stage sampling equipment's of being convenient for work.
Referring to fig. 1-7, in a specific embodiment, four support rods 2 are fixedly arranged at corners of the upper surface of the support frame 1, the four support rods 2 are angle irons, a mounting platform 3 is fixedly arranged at the tail end of each support rod 2, two relatively parallel mounting guide rails 4 are fixedly arranged on the surface of the mounting platform 3, and the mounting guide rails 4 are matched with sampling equipment. The sampling device is arranged as a drilling device for rock exploration, which drilling device is capable of drilling rock and which is capable of carrying a rock chip sample out of the drilled hole. Four universal wheels 8 are fixedly arranged at the bottom of the support frame 1, and the four universal wheels 8 are provided with a braking function. The device is moved to the position where the drilling needs to be performed through the universal wheel 8, the whole device is fixed in stability through the braking function of the universal wheel 8, and the drilling device which needs to perform rock exploration is placed on the installation guide rail 4 at the moment.
Referring to fig. 1-7, a plurality of augers 12 are uniformly and fixedly arranged at the tail end of a top plate 11, a positioning baffle 13 is fixedly arranged on the side wall of a supporting frame 1 positioned at one side of the augers 12, the positioning baffle 13 is a 7-shaped plate, the transverse section of the positioning baffle 13 extends to the lower part of the front end of the top plate 11, the top plate 11 is higher than the bottom edge of a universal wheel 8, the top plate 11 can only rotate to a certain angle through the positioning baffle 13, and the unstable condition of a machine caused by overlarge angle rotation is reduced.
Referring to fig. 1-7, a side plate 5 is fixedly arranged on the side wall of the support frame 1, a first hydraulic push rod 6 is fixedly arranged on the surface of the side plate 5, a cutting board 7 is fixedly arranged at the tail end of the first hydraulic push rod 6, and an anti-slip sleeve is sleeved on the surface of the cutting board 7. The first hydraulic ram 6 through the side wall is moved downwards, thereby accomplishing the purpose of auxiliary fixation, while the anvil 7 increases the friction force during extrusion.
Referring to fig. 1-7, a sleeve 23 is fixedly arranged on the upper surface of the pressing plate 19, a mounting cavity 24 is formed in the sleeve 23, a first baffle 25 is slidably arranged in the mounting cavity 24, the diameter of the first baffle 25 is larger than that of an outlet of the sleeve 23, a connecting rod 26 is fixedly arranged in the center of the first baffle 25, the side wall of the connecting rod 26 is movably inserted into the side wall of the sleeve 23, a telescopic rod 22 is fixedly arranged at the tail end of the connecting rod 26, the tail end of the telescopic rod 22 is fixedly arranged on the side wall of the supporting frame 1, and a plurality of anti-slip strips 35 are fixedly arranged at the bottom of the pressing plate 19.
Referring to fig. 1-7, a driving gear 16 is fixedly arranged on a side wall of a transmission shaft 10, a positioning rack 17 is arranged on the upper surface of the driving gear 16 in a meshed manner, a cross rod 18 is arranged at the center of the positioning rack 17, a mounting plate 14 is fixedly arranged at the center of the cross rod 18, a positioning bolt 15 is movably arranged on the surface of the mounting plate 14 in a meshed manner, and the tail end of the positioning bolt 15 is arranged on the surface of a support frame 1 in a screwed manner. The support frame 1 surface fixing is provided with the locating sleeve 29, and the inside countersink 30 of having seted up of locating sleeve 29, and countersink 30 inside activity is provided with second baffle 31, and second baffle 31 central point puts fixed push rod 28 that is provided with, and push rod 28 activity runs through locating sleeve 29 lateral wall, and the fixed breach 27 that sets up in the bottom of horizontal pole 18 of fixed setting of push rod 28 end. The side wall of the second baffle plate 31 is fixedly provided with a limit sliding block 32, the limit sliding block 32 is arranged on the surface of a limit sliding rail 33 in a sliding manner, the limit sliding rail 33 is arranged on the side wall of the countersink 30 in a sliding manner, the bottom of the second baffle plate 31 and the bottom of the countersink 30 are fixedly provided with an extrusion spring 34, and the extrusion spring 34 is a compression spring.
The positioning bolt 15 is rotated, and the mounting plate 14 and the supporting frame 1 are in a separated state at the moment through the rotation of the positioning bolt 15, then the extrusion spring 34 drives the second baffle plate 31 to start to move upwards along the limiting sliding rail 33 at the moment because the extrusion spring 34 is in a compressed state, finally the second baffle plate 31 drives the push rod 28 and the cross rod 18 to start to move upwards, and drives the positioning racks 17 at two ends to start to move upwards, and at the moment, the positioning racks 17 and the driving gear 16 are separated.
Working principle:
firstly, moving the device to a position needing to be perforated through the universal wheel 8, fixing the whole stability of the device through the braking function of the universal wheel 8, and placing the extrusion needing rock exploration on the installation guide rail 4 at the moment; a ground groove for accommodating the pressing plate 19 is formed at a proper position;
then the operator needs to rotate the positioning bolt 15, the positioning bolt 15 rotates to enable the mounting plate 14 and the supporting frame 1 to be in a separated state at the moment, then the extrusion spring 34 drives the second baffle plate 31 to start to move upwards along the limiting sliding rail 33 at the moment because the extrusion spring 34 is in a compressed state, finally the second baffle plate 31 drives the push rod 28 and the cross rod 18 to start to move upwards, and drives the positioning racks 17 at two ends to start to move upwards, and at the moment, the positioning racks 17 and the driving gear 16 are separated.
At this time, the driving gear 16 is not limited by the positioning rack 17, the driving shaft 10 starts to rotate due to gravity moment, as shown in fig. 1, the left driving shaft 10 starts to rotate anticlockwise, the right driving shaft 10 rotates clockwise, after the right driving shaft 10 rotates clockwise, the pressing plate 19 and the second hydraulic push rod 20 on the surface start to rotate downwards synchronously, finally, the tail end of the pressing plate 19 contacts with the ground, the second hydraulic push rod 20 drives the pressing plate 19 to start to move downwards obliquely, when the pressing plate 19 is clamped into the ground groove to be positioned in a sliding manner, the pressing plate 19 starts to squeeze downwards, due to the fact that the second hydraulic push rod 20 generates downwards obliquely, the whole supporting frame 1 is lifted to have a tendency of moving leftwards, and the previous left driving shaft 10 starts to rotate anticlockwise to drive the top plate 11 to contact with the bottom surface, at this time, the top plate 11 starts to rotate, the auger 12 at the bottom of the final top plate 11 moves into the rock stratum, at this time, the whole device is lifted, and the stability of connection is guaranteed through the pressing plate 19 and the auger 12, and the first hydraulic push rod 6 on the side wall moves downwards, thereby achieving the purpose of auxiliary fixing.
Claims (8)
1. Auxiliary assembly is got with fracture structure rock drilling to geological survey, its characterized in that: the device comprises a support frame, wherein two pairs of bearing blocks are symmetrically arranged on the side wall of the support frame, sealing bearings are embedded in the two pairs of bearing blocks, a transmission shaft is clamped and connected with the sealing bearings in each pair of bearing blocks, a supporting component is fixedly arranged on the surface of one transmission shaft, and a clamping component is fixedly arranged on the surface of the other transmission shaft;
the supporting component comprises a top plate, wherein the top plate is fixedly arranged on the side wall of one transmission shaft, and the top plate is inclined downwards;
the clamping assembly comprises a pressing plate, a connecting seat is fixedly arranged on the upper surface of the pressing plate, a second hydraulic push rod is movably arranged on the surface of the connecting seat, and the second hydraulic push rod is fixedly arranged on the side wall of the other transmission shaft.
2. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 1, wherein: the support frame upper surface corner fixedly is provided with the bracing piece, the terminal fixed mounting platform that is provided with of bracing piece, mounting platform fixed surface is provided with two relative parallel mounting rail, the fixed universal wheel that is provided with in support frame bottom.
3. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 2, wherein: the end of the top plate is uniformly and fixedly provided with a plurality of augers, the side wall of the support frame positioned on one side of each auger is fixedly provided with a positioning baffle, the positioning baffle is a 7-shaped plate, and the top plate is higher than the bottom edge of the universal wheel.
4. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 1, wherein: the side wall of the support frame is fixedly provided with a side plate, the surface of the side plate is fixedly provided with a first hydraulic push rod, the tail end of the first hydraulic push rod is fixedly provided with a cutting board, and the surface of the cutting board is sleeved with an anti-skid sleeve.
5. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 1, wherein: the clamp plate upper surface fixed is provided with the sleeve, the installation cavity has been seted up to the sleeve inside, and the inside slip of installation cavity is provided with first baffle, and first baffle diameter is greater than telescopic exit diameter, first baffle central point puts fixedly and is provided with the connecting rod, and connecting rod lateral wall activity grafting sleeve lateral wall, the terminal fixed telescopic link that is provided with of connecting rod, the terminal fixed setting of telescopic link is at the support frame lateral wall, the fixed a plurality of antislip strips that are provided with in clamp plate bottom.
6. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 1, wherein: the side wall of the transmission shaft is fixedly provided with a driving gear, the upper surface of the driving gear is provided with a positioning rack in a meshed mode, the center position of the positioning rack is provided with a cross rod, the center position of the cross rod is fixedly provided with a mounting plate, the surface of the mounting plate is movably meshed with a positioning bolt, and the tail end of the positioning bolt is arranged on the surface of the support frame in a screwed mode.
7. The fractured-structure rock drilling auxiliary apparatus for geological survey of claim 1, wherein: the support frame fixed surface is provided with the locating sleeve, and the inside countersink that has seted up of locating sleeve, just countersink inside activity is provided with the second baffle, and second baffle central point puts fixedly and is provided with the push rod, and the push rod activity runs through the locating sleeve lateral wall, just the fixed breach that sets up in the horizontal pole bottom of fixing of push rod end.
8. The geological survey fracture formation rock drilling assist apparatus of claim 7, wherein: the second baffle lateral wall is fixed to be provided with spacing slider, just spacing slider slides and sets up on spacing slide rail surface, just spacing slide rail slides and sets up at countersink lateral wall, just second baffle bottom and countersink bottom are fixed to be provided with extrusion spring, and extrusion spring is compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310718902.8A CN116556851A (en) | 2023-06-16 | 2023-06-16 | Auxiliary equipment is got with fracture structure rock drilling to geological survey |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310718902.8A CN116556851A (en) | 2023-06-16 | 2023-06-16 | Auxiliary equipment is got with fracture structure rock drilling to geological survey |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116556851A true CN116556851A (en) | 2023-08-08 |
Family
ID=87491679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310718902.8A Pending CN116556851A (en) | 2023-06-16 | 2023-06-16 | Auxiliary equipment is got with fracture structure rock drilling to geological survey |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116556851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622828A (en) * | 2022-03-24 | 2022-06-14 | 青海省第三地质勘查院 | Geological survey is with supplementary work platform |
-
2023
- 2023-06-16 CN CN202310718902.8A patent/CN116556851A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114622828A (en) * | 2022-03-24 | 2022-06-14 | 青海省第三地质勘查院 | Geological survey is with supplementary work platform |
| CN114622828B (en) * | 2022-03-24 | 2023-11-14 | 青海省第三地质勘查院 | Auxiliary working platform for geological investigation |
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