CN109470507A - The vibration penetration type lunar soil coring apparatus of spiral auxiliary dive - Google Patents
The vibration penetration type lunar soil coring apparatus of spiral auxiliary dive Download PDFInfo
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- CN109470507A CN109470507A CN201710802836.7A CN201710802836A CN109470507A CN 109470507 A CN109470507 A CN 109470507A CN 201710802836 A CN201710802836 A CN 201710802836A CN 109470507 A CN109470507 A CN 109470507A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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Abstract
Spiral assists the vibration penetration type lunar soil coring apparatus of dive, belongs to manned space flight lunar surface artificial sample technical field.The present invention is to sample the problem of ability difference to solve existing lunar soil sampling apparatus by coring pipe while realizing external helicoid auxiliary dive and internal vibration coring.It includes supporting mechanism, vibration coring mechanism, spiral Pai Rang mechanism and enclosed mechanism, and supporting mechanism is used to provide braced frame for vibration coring mechanism and spiral Pai Rang mechanism；Electromagnetic actuator exports straight-line oscillation, and is directly delivered to coring pipe via vibration mandril；Rotary motion is transferred to drilling rod via a pair of of gear by the revolution driving motor of biasing, and rotational motion path is in vibration path periphery；Vibration mandril and coring pipe etc. vibrate coring part and pass through from the spirals such as slow-speed shaft, drilling rod row's earth mechanism center shaft line, and rotational motion path is not interfered with vibration path.The present invention is for acquiring lunar soil sample.
Description
Technical field
The present invention relates to the vibration penetration type lunar soil coring apparatus of spiral auxiliary dive, belong to manned space flight lunar surface and manually adopt
Sample technical field.
Background technique
In the following space flight manned moon program, astronaut needs the lunar soil sample under acquisition lunar surface manually, acquires lunar soil
Hand gear require small in size, easily operated, sampling efficiency is high, and keeps to the stratification information of primary lunar soil.
Traditional lunar soil drilling mode slips into that ability is strong, but the track of rod boring is helix and sample lunar soil and drilling rod
Inside generates severe friction, reduces lunar soil sample rate and destroys the stratification information of lunar soil；And it is directly hammered using coring pipe
The mode of injection, which acquires lunar soil, can effectively keep soil layer information, but directly injection can squeeze lunar soil sample, generate larger injection
Resistance, so that depth of penetration is limited and reduces the ratio (coring rate) of internal specimen length and depth of penetration.If in coring
Pipe surface processes anisotropy friction microstructure, and injection lunar soil in the case where slight amplitude vibration, then can effectively reduce
The active force that coring pipe is contacted with lunar soil.But the mode of the simple injection of coring pipe is difficult to break through harder soil layer, in vibration coring
What the jacketed row's earth spiral of pipe outer tube wall then can effectively promote sampling apparatus slips into ability.
Improve the sampling efficiency of lunar soil sample, it is also necessary to reduce side pressure of the lunar soil sample to sampling apparatus coring tube wall
Power, but lateral pressure is small and will lead to sample landing when device is chosen；And space rocket carrying ability is limited, this just needs to design
Structure is simple, the sampling apparatus of high reliablity.
Summary of the invention
The invention aims to solve existing lunar soil sampling apparatus by coring pipe while realizing under external helicoid auxiliary
Latent and internal vibration coring samples the problem of ability difference, provides a kind of vibration penetration type lunar soil coring of spiral auxiliary dive
Device.
The vibration penetration type lunar soil coring apparatus of spiral of the present invention auxiliary dive, it includes that supporting mechanism, vibration take
Concentric mechanism, spiral Pai Rang mechanism and enclosed mechanism,
Supporting mechanism is used to provide braced frame for vibration coring mechanism and spiral Pai Rang mechanism；
Vibration coring mechanism includes electromagnetic actuator, vibration output flange, accelerometer, accelerometer bracket, straight line
Bearing, vibration mandril, coring pipe, vibration connecting flange, sealed nut, steel ball retainer and nut,
Electromagnetic actuator is mounted on supporting mechanism,
The output shaft of electromagnetic actuator connects accelerometer bracket by vibration output flange, and accelerometer, which is mounted on, to be added
In speedometer bracket；Accelerometer bracket is connect by ring flange with vibration mandril, and vibration mandril, which sequentially passes through, is mounted on support
After linear bearing and hollow slow-speed shaft in mechanism, coring pipe is connected by vibration connecting flange, vibrates connecting flange by spiral shell
Female axial restraint；Along two semicanals are divided axially into, two semicanals are locked in together coring pipe by sealed nut；Outside the end of coring pipe
Surface is socketed steel ball retainer；
Spiral Pai Rang mechanism includes revolution driving motor, pinion gear, high speed shaft, drilling rod, drill bit, slow-speed shaft, gear wheel, turns
Dynamic connecting flange and round nut,
Revolution driving motor is mounted on supporting mechanism, and the rotation of revolution driving motor driven high speed shaft is installed on high speed shaft
On pinion gear engaged with gear wheel, gear wheel is installed on slow-speed shaft；Slow-speed shaft is bored by rotation connection flanged joint drilling rod
Bar connects drill bit；The axial position of rotation connection flange is fixed by round nut；
Round nut, vibration connecting flange, sealed nut, coring pipe and steel ball retainer are in drilling rod；
Enclosed mechanism is mounted on coring pipe end, closes or open the end port of coring pipe for the rotation with drilling rod.
Advantages of the present invention: apparatus of the present invention are by supporting mechanism, vibration coring mechanism, spiral Pai Rang mechanism and enclosed mechanism
Four parts form.Wherein, electromagnetic actuator exports straight-line oscillation, and is directly delivered to coring pipe via vibration mandril；Partially
Rotary motion is transferred to drilling rod via a pair of of gear by the revolution driving motor set, and rotational motion path is in outside vibration path
It encloses；Vibration mandril and coring pipe etc. vibrate coring part and pass through from the spirals such as slow-speed shaft, drilling rod row's earth mechanism center shaft line, rotate
Motion path is not interfered with vibration path.
Enclosed mechanism positioned at coring pipe end realizes the folding to coring pipe by sealing and expansion movement.Coring pipe by
In only carrying out vibration motion, the active force of lunar soil sample and inner wall can reduce, thus effectively keeping sample stratification characteristic
While promoted coring rate；The external helicoid drilling dive mode of drilling rod can break through compared with hard stratum, and helical structure can be effective
Lunar soil is discharged in ground, promotes dive efficiency；Apparatus of the present invention by lunar soil sampling action be decomposed into outer ring spiral auxiliary dive with it is interior
The vibration injection coring of portion's coring pipe acts dive movement with coring full decoupled, can change drilling revolving speed and vibration respectively
Dynamic parameter come realize sample effect optimize, thus effectively promoted sampling efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the vibration penetration type lunar soil coring apparatus of spiral auxiliary dive of the present invention；
Fig. 2 is the axial cross-sectional views of enclosed mechanism；
Fig. 3 is the three dimensional structure diagram of enclosed mechanism；
Fig. 4 is the three dimensional structure diagram converted Fig. 3 after angle；
Fig. 5 is the structural schematic diagram of division block.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, the auxiliary of spiral described in present embodiment below with reference to Fig. 1 to Fig. 5
The vibration penetration type lunar soil coring apparatus of dive, it includes supporting mechanism, vibration coring mechanism, spiral Pai Rang mechanism and sealing machine
Structure,
Supporting mechanism is used to provide braced frame for vibration coring mechanism and spiral Pai Rang mechanism；
Vibration coring mechanism includes electromagnetic actuator 13, vibration output flange 16, accelerometer 17, accelerometer bracket
18, linear bearing 19, vibration mandril 20, coring pipe 26, vibration connecting flange 4, sealed nut 3, steel ball retainer 2 and nut
25,
Electromagnetic actuator 13 is mounted on supporting mechanism,
The output shaft of electromagnetic actuator 13 connects accelerometer bracket 18, accelerometer 17 by vibration output flange 16
It is mounted in accelerometer bracket 18；Accelerometer bracket 18 by ring flange with vibration mandril 20 connect, vibrate mandril 20 according to
After the secondary linear bearing 19 being passed through on supporting mechanism and hollow slow-speed shaft 21, taken by the vibration connection of connecting flange 4
Heart pipe 26 vibrates connecting flange 4 by 25 axial restraint of nut；Coring pipe 26 passes through sealed along two semicanals, two semicanals are divided axially into
Nut 3 is locked in together；The distal outer surface of coring pipe 26 is socketed steel ball retainer 2；
Spiral Pai Rang mechanism include revolution driving motor 12, pinion gear 8, high speed shaft 6, drilling rod 5, drill bit 1, slow-speed shaft 21,
Gear wheel 22, rotation connection flange 23 and round nut 24,
Revolution driving motor 12 is mounted on supporting mechanism, and revolution driving motor 12 drives high speed shaft 6 to rotate, and is installed on height
Pinion gear 8 on fast axis 6 is engaged with gear wheel 22, and gear wheel 22 is installed on slow-speed shaft 21；Slow-speed shaft 21 passes through rotation connection
23 jointed rod 5 of flange, drilling rod 5 connect drill bit 1；The axial position for being rotatablely connected flange 23 is fixed by round nut 24；
Round nut 24, vibration connecting flange 4, sealed nut 3, coring pipe 26 and steel ball retainer 2 are in drilling rod 5；
Enclosed mechanism is mounted on 26 end of coring pipe, closes or open the end of coring pipe 26 for the rotation with drilling rod 5
Port.
The enclosed mechanism includes handsetting gear 27, cam retainer 28,12 division blocks 29, slideway matrixes 30, plane
Groove cam 31, circlip for hole 32 and sealing felt 33,
Slideway matrix 30 is in hollow cylinder, is mounted on 26 end of coring pipe, the lower ring textures of slideway matrix 30 are uniform
12 straights are distributed, one end of per pass sliding slot is cut in annulus inner circle, and other end circular direction to outside annulus extends；
Cam retainer 28 is fixed on the outer surface of slideway matrix 30, and there is inner convex platform on cam retainer 28；
Plane groove cam 31 is made of the disk segments and cylindrical section of interior sky, the intracavity diameter phase of disk segments and cylindrical section
Deng with 12 through slots on the upper surface of disk segments；The disk segments are hung on the inner convex platform of cam retainer 28；12 points
29 clamping connection of block is closed between slideway matrix 30 and the disk segments of plane groove cam 31, it is sliding in each 29 upper surface of division block connection
Block, lower surface connect sliding block, and the top shoe of each division block 29 is embedded in a straight, and sliding block passes through one accordingly
A through slot；12 division blocks 29 can carry out straight line fortune with the rotation of drilling rod 5 in the straight of pairing and through slot respectively
It is dynamic, thus the end port of closing coring pipe 26 closed together, and it is launched into the circular end port for opening coring pipe 26；
The partial outer face of cylindrical section has round-arced tooth, and the round-arced tooth is engaged with handsetting gear 27, handsetting gear
27 are connect by torsional spring hinge with drill bit 1；The axial position of handsetting gear 27 is fixed by circlip for hole 32；
It is sealed between 31 end of plane groove cam and drill bit 1 by sealing felt 33.
The supporting mechanism includes lower tooth roller box 7, upper gear box 9, lower jacket 10, upper jacket 11, handle 14 and vibration excitor
Bracket 15,
Electromagnetic actuator 13 is installed in exciter support 15, and 15 two sides of exciter support are separately connected a handle
14；
Upper jacket 11 connects the exciter support 15, and lower jacket 10 is connected between upper jacket 11 and upper gear box 9, under
Linear bearing 19 is installed in sheath 10；
Lower tooth roller box 7 and upper gear box 9 are linked together by fastener, and pinion gear 8 and gear wheel 22 are set to connection
In lower tooth roller box 7 and upper gear box 9 together, one end of revolution driving motor 12 is mounted on upper gear box 9.
In spiral Pai Rang mechanism, revolution driving motor 12 drives high speed shaft 6 to rotate, and passes through pinion gear 8 and gear wheel 22
Engagement, transmit motion to slow-speed shaft 21.21 lower end of slow-speed shaft is milled with plane, the plane and center rotation connection method with holes
Orchid 23 cooperates, and is rotatablely connected the flanged joint of flange 23 and 5 upper end of drilling rod, 5 lower end of drilling rod by two keys and two screws and
Drill bit 1 connects.Slow-speed shaft 21 is all rigid connection to drill bit 1, can be rotated synchronously.
In vibration coring mechanism, electromagnetic actuator 13 can be installed on exciter support 15；Accelerometer bracket
18 downside by bolt group and vibrate 20 upper end of mandril ring flange fix, vibration mandril 20 across linear bearing 19 with it is hollow
Slow-speed shaft 21 extends to 5 inner hole of drilling rod, and vibration mandril 20, which passes through linear bearing 19, can guarantee its radial rigidity, vibrate
20 end of mandril is connect by vibrating connecting flange 4 with the threaded hole of 26 upper end of coring pipe, and by 25 axially position of nut；Coring
Pipe 26 can be separated along axis section and is threaded on the outside of upper end, and sealed nut 3 screws two parts coring pipe on the screw thread
26 are incorporated at one, and 26 lower end of coring pipe is passed through the steel ball retainer 2 of 5 lower end of drilling rod.Steel ball retainer 2 can will in
Portion's axial vibration and exterior circumferential rotary motion decouple, while can guarantee that the coring pipe 26 being split into two halves merges at one.By
The axial vibration of electromagnetic actuator directly can be transferred to coring pipe 26 by this vibration coring part, and guarantee the rigid of its entirety
Degree.
The supporting mechanism is the bracket of single unit system, is followed successively by exciter support 15, upper jacket 11, lower shield from top to bottom
10, upper gear box 9 and lower tooth roller box 7 are covered, 8 side of pinion gear in upper gear box 9 is equipped with bearing block.
Enclosed mechanism is located inside 26 end drill bit 1 of coring pipe, 30 sets of slideway matrix on the outside of 26 end of coring pipe, by spiral shell
Nail connection；The sliding block of division block 29 is cylinder；Cam retainer 28 is installed by screw to slideway matrix 30, plane groove
Round-arced tooth is arranged in the cylindrical section partial outer face of cam 31；31 end of plane groove cam is to seal the sealing of felt 33, sealing
In the installation to drill bit 1 of felt 33.Enclosed mechanism is that the rotary motion of external helicoid drilling rod 5 is transferred to inner plane groove cam
31, plane groove cam 31 is translated into the linear motion of division block 29, to complete the sealing and expansion fortune of division block 29
It is dynamic.
When revolution driving motor 12 rotates, drill bit 1 is driven to rotate, and then handsetting gear 27 stirs plane groove cam 31
Rotation, plane groove cam 31 push division block 29 to move on straight.
The handle 14 of supporting mechanism provides axial compressive force for operating whole device, for dive sampling process manually, and
Power of choosing is provided in taking-up process, upper jacket 11 mainly plays connection function.Supporting mechanism mainly plays rack, and transmitting is axial
Power.
Working principle: when dive samples, rotating forward revolution driving motor 12, drives low speed through pinion gear 8 and gear wheel 22
Axis 21 rotates, and drilling rod 5 and drill bit 1 and 21 synchronous rotary of slow-speed shaft, auger stem 5 rotate in the forward direction, and upward casting carries out dive and adopts
Sample, while being pressurizeed downwards by handle 14, drill bit 1 drives internal handsetting gear 27 to rotate in the forward direction, and handsetting gear 27 passes through arc
Tooth drives plane groove cam 31 to rotate, and plane groove cam 31 pushes the straight line on the sliding slot of slideway matrix 30 of division block 29 to transport
It is dynamic, realize the expansion of 12 division blocks 29, when division block 29 reaches the limit of position, torsional spring deforms more than the arc-shaped gear limit, dials
Moving gear 27 and the arc-shaped gear of plane groove cam 31 slide；Meanwhile electromagnetic actuator 13 is powered, output shaft passes through
Vibrating mandril 20 drives coring pipe 26 to vibrate up and down, can by changing the frequency and amplitude of 13 input current of electromagnetic actuator
To change the frequency and amplitude of coring tube vibration, is acquired and fed back by accelerometer 17.After sampler slips into certain depth, electromagnetic type
Vibration excitor 13 stop vibration, revolution driving motor 12 invert, downward spiral casting aid-device rise, while by handle 13 to
On choose, drill bit 1 drive handsetting gear 27 reversely rotate, pass through arc-shaped gear drive plane groove cam 31 reversely rotate, plane
Groove cam 31 pushes division block 29 on the sliding slot of slideway matrix 30 to center movement, and the drill bit 1 constantly reversely rotated pushes
Division block 29 pressurizes to sample at this, to clamp down on sample at this, avoids falling, the sealing of complete paired samples.It extracts and bores
After bar, the bolt at rotation connection flange 23 and drilling rod 5 is removed, removes drilling rod 5 and drill bit 1, is removed at vibration connecting flange 4
Bolt takes out coring pipe 26, screws out sealed nut 4, removes enclosed mechanism, coring pipe 26 is separated along axis section, that is, can be taken off
Sample.
Claims (3)
1. a kind of vibration penetration type lunar soil coring apparatus of spiral auxiliary dive, which is characterized in that it includes supporting mechanism, vibration
Coring mechanism, spiral Pai Rang mechanism and enclosed mechanism,
Supporting mechanism is used to provide braced frame for vibration coring mechanism and spiral Pai Rang mechanism；
Vibration coring mechanism includes electromagnetic actuator (13), vibration output flange (16), accelerometer (17), accelerometer branch
Frame (18), linear bearing (19), vibration mandril (20), coring pipe (26), vibration connecting flange (4), sealed nut (3), steel ball
Retainer (2) and nut (25),
Electromagnetic actuator (13) is mounted on supporting mechanism,
The output shaft of electromagnetic actuator (13) passes through vibration output flange (16) connection accelerometer bracket (18), accelerometer
(17) it is mounted in accelerometer bracket (18)；Accelerometer bracket (18) is connect by ring flange with vibration mandril (20), is shaken
After dynamic mandril (20) sequentially pass through the linear bearing (19) and hollow slow-speed shaft (21) being mounted on supporting mechanism, pass through vibration
Connecting flange (4) connects coring pipe (26), vibrates connecting flange (4) by nut (25) axial restraint；Coring pipe (26) is along axial direction
Dimidiation pipe, two semicanals are locked in together by sealed nut (3)；The distal outer surface socket steel ball of coring pipe (26) is kept
Frame (2)；
Spiral Pai Rang mechanism includes revolution driving motor (12), pinion gear (8), high speed shaft (6), drilling rod (5), drill bit (1), low speed
Axis (21), gear wheel (22), rotation connection flange (23) and round nut (24),
Revolution driving motor (12) is mounted on supporting mechanism, and revolution driving motor (12) drives high speed shaft (6) rotation, is installed on
Pinion gear (8) on high speed shaft (6) is engaged with gear wheel (22), and gear wheel (22) is installed on slow-speed shaft (21)；Slow-speed shaft
(21) by rotation connection flange (23) jointed rod (5), drilling rod (5) connects drill bit (1)；It is rotatablely connected the axial direction of flange (23)
Position is fixed by round nut (24)；
Round nut (24), vibration connecting flange (4), sealed nut (3), coring pipe (26) and steel ball retainer (2) are in drilling rod
(5) in；
Enclosed mechanism is mounted on coring pipe (26) end, closes or opens coring pipe (26) for the rotation with drilling rod (5)
End port.
2. the vibration penetration type lunar soil coring apparatus of spiral auxiliary dive according to claim 1, which is characterized in that
The enclosed mechanism include handsetting gear (27), cam retainer (28), 12 division blocks (29), slideway matrix (30),
Plane groove cam (31), circlip for hole (32) and sealing felt (33),
Slideway matrix (30) is in hollow cylinder, is mounted on coring pipe (26) end, the lower ring textures of slideway matrix (30) are equal
12 straights of even distribution, one end of per pass sliding slot are cut in annulus inner circle, and other end circular direction to outside annulus extends；
It is fixed on the outer surface of slideway matrix (30) cam retainer (28), there is inner convex platform on cam retainer (28)；
Plane groove cam (31) is made of the disk segments and cylindrical section of interior sky, and the intracavity diameter of disk segments and cylindrical section is equal,
There are 12 through slots on the upper surface of disk segments；The disk segments are hung on the inner convex platform of cam retainer (28)；12 points
Block (29) clamping connection is closed between slideway matrix (30) and the disk segments of plane groove cam (31), each division block (29) upper surface
Top shoe is connected, lower surface connects sliding block, and the top shoe of each division block (29) is embedded in a straight, sliding block phase
That answers passes through a through slot；12 division blocks (29) can be with the rotation of drilling rod (5), respectively in the straight of pairing and logical
It moves along a straight line in slot, thus the end port of closing coring pipe (26) closed together, and it is launched into circular opening coring
Manage the end port of (26)；
The partial outer face of cylindrical section has round-arced tooth, and the round-arced tooth is engaged with handsetting gear (27), handsetting gear
(27) it is connect by torsional spring hinge with drill bit (1)；The axial position of handsetting gear (27) is fixed by circlip for hole (32)；
Pass through sealing felt (33) sealing between plane groove cam (31) end and drill bit (1).
3. the vibration penetration type lunar soil coring apparatus of spiral auxiliary dive according to claim 1 or 2, which is characterized in that
The supporting mechanism includes lower tooth roller box (7), upper gear box (9), lower jacket (10), upper jacket (11), handle (14) and exciting
Device bracket (15),
Electromagnetic actuator (13) is installed in exciter support (15), and exciter support (15) two sides are separately connected a handle
(14)；
Upper jacket (11) connects the exciter support (15), and lower jacket (10) is connected to upper jacket (11) and upper gear box (9)
Between, linear bearing (19) are installed in lower jacket (10)；
Lower tooth roller box (7) and upper gear box (9) are linked together by fastener, and pinion gear (8) and gear wheel (22) are set to
In the lower tooth roller box (7) and upper gear box (9) to link together, one end of revolution driving motor (12) is mounted on upper gear box
(9) on.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802836.7A CN109470507B (en) | 2017-09-08 | 2017-09-08 | Spiral auxiliary submerging vibration injection type lunar soil coring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802836.7A CN109470507B (en) | 2017-09-08 | 2017-09-08 | Spiral auxiliary submerging vibration injection type lunar soil coring device |
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| CN109470507A true CN109470507A (en) | 2019-03-15 |
| CN109470507B CN109470507B (en) | 2020-11-13 |
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| CN110455574A (en) * | 2019-08-29 | 2019-11-15 | 北京空间飞行器总体设计部 | A kind of friction driving type objects outside Earth earth collecting mechanism |
| CN110455574B (en) * | 2019-08-29 | 2021-08-17 | 北京空间飞行器总体设计部 | Friction transmission type extraterrestrial celestial body soil collection mechanism |
| CN111322025A (en) * | 2020-02-22 | 2020-06-23 | 深圳大学 | Moon self-tunneling coring robot device and system |
| CN111322025B (en) * | 2020-02-22 | 2024-05-17 | 深圳大学 | Moon is from tunnelling coring robot device and system |
| CN111829813A (en) * | 2020-07-08 | 2020-10-27 | 北京卫星制造厂有限公司 | Impact penetration type deep water frozen soil continuous sampling device |
| CN112098630A (en) * | 2020-09-16 | 2020-12-18 | 哈尔滨工业大学 | Lunar soil performance comprehensive test bed and test method |
| CN114018634A (en) * | 2021-12-16 | 2022-02-08 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Geological mineral experiment sampling device |
| CN114293902B (en) * | 2021-12-31 | 2024-03-19 | 哈尔滨工业大学 | Single-motor rotary impact power self-distribution drilling sampling device |
| CN114293902A (en) * | 2021-12-31 | 2022-04-08 | 哈尔滨工业大学 | Single-motor rotary impact power self-distribution drilling sampling device |
| CN116223094B (en) * | 2022-12-14 | 2024-02-06 | 浙江江山勘测设计有限公司 | Engineering geology reconnaissance soil layer quick sampling device |
| CN116223094A (en) * | 2022-12-14 | 2023-06-06 | 浙江江山勘测设计有限公司 | Engineering geology reconnaissance soil layer quick sampling device |
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