CN111911088B - Lunar soil deep layer sampling drill rod with sample locking function - Google Patents
Lunar soil deep layer sampling drill rod with sample locking function Download PDFInfo
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- CN111911088B CN111911088B CN202010894384.1A CN202010894384A CN111911088B CN 111911088 B CN111911088 B CN 111911088B CN 202010894384 A CN202010894384 A CN 202010894384A CN 111911088 B CN111911088 B CN 111911088B
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- 238000005070 sampling Methods 0.000 title claims abstract description 43
- 239000002689 soil Substances 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 230000000903 blocking effect Effects 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims description 70
- 238000009434 installation Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 abstract description 32
- 238000000034 method Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
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- 230000006978 adaptation Effects 0.000 description 1
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- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/10—Formed core retaining or severing means
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- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a lunar soil deep sampling drill rod with a sample locking function, which comprises a drill rod body, a sample locking structure and an internal core taking pipe, wherein a sample blocking mechanism is arranged in the sample locking structure; the inner coring pipe and the sample locking structure are respectively sleeved in the drill rod body and can axially move relative to the drill rod body, a pin is arranged on the outer side wall of one end of the inner coring pipe, a limiting sliding groove is arranged on the inner side wall of the sample locking structure, one end of the inner coring pipe is sleeved in the sample locking structure, and the pin is slidably arranged in the limiting sliding groove; the internal coring pipe moves axially relative to the sample locking structure, so that the sample blocking mechanism is changed from a state of being opened by the internal coring pipe to a closed state. The lunar soil deep layer sampling drill rod adopts a double-layer drill rod structure, the external screw thread drill rod is adopted outside, the drilling efficiency can be effectively improved, and the internal core taking pipe adopts a polished rod with a sample locking structure, so that samples can be more quickly extracted.
Description
Technical Field
The invention relates to the technical field of lunar exploration deep sampling, in particular to a lunar soil deep sampling drill rod with a sample locking function.
Background
One of the most important and distinctive tasks of lunar exploration is to selectively collect lunar samples of various types and having significant scientific value on the lunar surface. The collection of lunar samples for lunar exploration dates back to the Apollo era, and the significant results of the Apollodeny moon program are reflected in collected lunar samples and a great deal of new findings from research institutes around these samples for half a century all over the world. The total of 6 Apollo lunar exploration events recovered 381.7Kg lunar samples with about 24Kg of samples with particles smaller than 1cm, most of these samples were subjected to preliminary size sorting in the Johnson space center with 1.3Kg of above 1cm fraction only. In addition, the Luna lunar exploration mission of the former soviet union returned a 301g sample of the moon. China has not developed any task of sampling and returning to the outside of the ground at present, and Chang' e No. 5 launched in the year is expected to develop the task of sampling and returning to the moon for the first time, and the total amount of lunar soil, stones and lunar soil profile samples is about 2 kg. The former work outlined the basic situation of the lunar surface, but also presented higher challenges to the sample collection work of lunar exploration.
The first sampling holes on the moon were drilled by Apollo 11 astronauts in 1969 (as shown in figure one). An Apollo 11 astronaut used a geological hammer to drive an aluminium tubular soil sampler into the lunar soil and removed a first sample (20 mm diameter) 15cm deep. However, no matter how hard the soil sampler hits, the soil sampler cannot reach a larger depth. Astronauts thought that the design of soil sampler pipe shoe in 1965 did not adapt to the strength of the depth Y soil, and the soil sample was compacted and deformed under the inner conical surface of the soil sampler. Therefore, an improved external conical surface soil sampler is adopted for Apollo 12, but 3 astronauts still take 35-40 min to sample. The core tube had an outer diameter of 2.8cm and an inner diameter of 2cm, a length of 39.9cm, and an overall weight of about 327 g. The drill bit mainly has two types of straight pipe type and conical type, the straight pipe type can only be used for sampling loose surface soil, the effect is poor for relatively dense Y soil, and the 12 and 14 tasks are replaced by conical heads. The maximum penetration depth can reach 70cm by hammering. However, the sampling mode has no universality and depends on the characteristics of soft soil.
In the later 15-17 tasks, the sampling drilling rig equipment Apollo Lunar Surface Drill (ALSD) replaces the press-in/penetration sampling and becomes the main depth sampling equipment. The ALSD belongs to the combined core drilling of a spiral drill rod, a spiral core tube, a core device and a hard alloy drill bit. The battery pack is used for supplying power, the drilling machine drives the drill bit and the drill pipe, the vibration is applied to assist in rotary drilling, the drill pipe is supplemented in the process of drilling in the depth direction in a mode of connecting the drill pipe, and finally the drill pipe is pried by a wrench to recover the coring sample. The whole set of equipment comprises a battery pack (16 zinc oxide-silver batteries), a motor (2270 vibration/min, 280RPM), a thermal protection sleeve, a titanium alloy drill pipe (with the outer diameter of 2.5cm, the inner diameter of 2cm, the length of 42.5cm, 6 in total), a tungsten carbide drill bit (with the length of 6cm and 5 inserts), a pedal (with the functions of stably installing and drilling, prying a support of the drill pipe and the like), a spanner for prying the drill pipe, and a hole-expanding drill pipe group (made of boron-reinforced glass fiber composite material) for placing a heat flow experiment detection device, wherein the total mass of an ALSD sampling pack is 13.4kg, the power is 430W, the drilling speed is 280RPM, and the vibration frequency is about 37.8 Hz. The self weight of the drilling machine is 11.8kg, and the weight on bit is from the self weight of the drilling machine and the weight of an astronaut. The deepest drilling reaches nearly 3 m.
The Apollo moon deep sampling drill pipe cannot effectively store the drilled sample, and part of the sample is lost in the drill pipe extraction process. And the Apollo 16 has no sample in a section of 72-80 cm, the sample in a section of 80-120 cm is intermittent, and the Apollo 17 has no sample in a section of 38-40 cm and a section of 71-80 cm.
The spiral drilling tool drills into lunar soil under the combined action of the self weight of the drilling machine and the feeding force of astronauts, but the core barrel is difficult to pull from the lunar soil after the drilling reaches the designed depth, and a tool for prying out a drill rod and the core barrel from a hole is specially designed for the purpose.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a lunar soil deep sampling drill rod with a sample locking function.
The technical scheme for solving the technical problems is as follows: a lunar soil deep sampling drill rod with a sample locking function comprises a drill rod body, a sample locking structure and an internal core taking pipe, wherein a sample blocking mechanism is arranged in the sample locking structure; the inner coring pipe and the sample locking structure are respectively sleeved in the drill rod body and can axially move relative to the drill rod body, a pin is arranged on the outer side wall of one end of the inner coring pipe, a limiting sliding groove is arranged on the inner side wall of the sample locking structure, one end of the inner coring pipe is sleeved in the sample locking structure, and the pin is slidably arranged in the limiting sliding groove; the internal coring pipe moves axially relative to the sample locking structure, so that the sample blocking mechanism is changed from a state of being opened by the internal coring pipe to a closed state.
The invention has the beneficial effects that: the lunar soil deep layer sampling drill rod adopts a double-layer drill rod structure, the external screw thread drill rod is adopted outside, the drilling efficiency can be effectively improved, and the internal core taking pipe adopts a polished rod with a sample locking structure, so that samples can be more quickly extracted. The inside core taking pipe is connected with the sample locking structure through the pin sliding groove, so that the sample drilling and taking process can be guaranteed to be fixed at the relative position of the inside core taking pipe and the sample locking structure through the limiting sliding groove, and the inside core taking pipe and the sample locking structure can be guaranteed to slide relatively in the sample extracting process. When extracting the sample, only need take out inside coring pipe, need not take out outside drilling rod body, the sample extraction process is convenient, does not need solitary drilling rod hoisting device.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the sample blocking mechanism comprises a plurality of cutting separation blades which are respectively installed in the sample locking structure; before sampling, a plurality of cut-off separation blades are propped open by the internal coring pipe, and after sampling, the cut-off separation blades are closed to form a blocking surface.
The beneficial effect of adopting the further scheme is that: the internal cutting separation blade in the initial state is opened, the position of the cutting separation blade is limited through the internal coring pipe, the internal coring pipe is guaranteed to be stressed, deformed and stored with energy, when the internal coring pipe is upwards extracted to exceed the highest point of the cutting separation blade, the cutting separation blade is closed under the action of elasticity, a sample is cut off, and the sample is packaged in the internal coring pipe.
Further, the cutting separation blade is installed in the sample locking structure through a torsion spring.
The beneficial effect of adopting the further scheme is that: the torsional spring is used for providing elastic restoring force for closing the cutting separation blade.
Further, the cutting separation blade is of a fan-shaped structure, and the arc-shaped end of the cutting separation blade is installed in the sample locking structure.
The beneficial effect of adopting the further scheme is that: the cutting-off separation blades with the fan-shaped structures can be unfolded or closed like petals, installation and operation are convenient, and the cutting-off effect on samples is better.
Further, the free end of the cutting baffle is of a barb structure, and a blocking surface formed by the barb structure is arched upwards.
The beneficial effect of adopting the further scheme is that: if the lowest end of the drilled sample is hard lunar rock, when the cutting separation blade is not enough to cut off the sample under the action of spring force, the cutting separation blade is in a semi-closed barb form at the moment, and the sample can be tightly locked.
Further, the sample locking structure comprises a cutting separation blade mounting seat and a lock cylinder mechanism connecting piece, the cutting separation blade mounting seat is in threaded connection with one end of the lock cylinder mechanism connecting piece, and the cutting separation blade is mounted at one end, located in the lock cylinder mechanism connecting piece, of the cutting separation blade mounting seat; the lock core mechanism connecting piece is characterized in that a first limiting sliding groove is formed in the hollow structure of the cutting separation blade mounting seat, a second limiting sliding groove corresponding to the first limiting sliding groove is formed in the hollow structure of the lock core mechanism connecting piece, and the pin is arranged in the first limiting sliding groove and the second limiting sliding groove corresponding to the first limiting sliding groove in a sliding mode.
The beneficial effect of adopting the further scheme is that: and the cutting separation blade mounting seat and the lock cylinder mechanism connecting piece are respectively provided with a limiting sliding groove, when the pin slides out of the first limiting sliding groove, the internal core taking pipe releases the constraint on the cutting separation blade, and the internal core taking pipe can continue to slide along the second limiting sliding groove to take out a sample.
Furthermore, the sample locking structure also comprises a wedge-shaped block, the wedge-shaped block is in threaded connection with one end, far away from the lock cylinder mechanism connecting piece, of the cutting separation blade mounting seat, and the wedge-shaped block is of a hollow conical closing-up structure; the sample blocking mechanism further comprises a holding ring, and the holding ring is arranged in the tapered closing-in structure.
The beneficial effect of adopting the further scheme is that: the wedge block forms two layers of sample locking subassemblies with the combination of embracing tightly encircles, with cut off the separation blade cooperation, forms double-deck sample locking subassembly in drilling rod body bottom, can prevent effectively that the sample from droing at the promotion in-process. Double-deck sample locking subassembly not only can be with the locking of soft lunar soil, also can lock hard lunar rock.
Furthermore, an accommodating space for accommodating the cutting separation blade in the spreading state is formed in the position, close to the cutting separation blade mounting seat, of the inner side wall of the lock cylinder mechanism connecting piece.
The beneficial effect of adopting the further scheme is that: the cutting separation blade is convenient to place in the accommodating space when being unfolded, and the axial movement of the internal coring pipe is not influenced.
Furthermore, the first limiting sliding groove is far away from one end of the cutting separation blade and extends in the circumferential direction to form a first limiting section, and the second limiting sliding groove is far away from one end of the cutting separation blade and extends in the circumferential direction to form a second limiting section.
The beneficial effect of adopting the further scheme is that: the limiting section I and the limiting section II are arranged to facilitate the up-and-down limiting of the internal core taking pipe.
And the inner core taking pipe is connected with the drill rod body through the driving mounting joint.
Drawings
FIG. 1 is a schematic view of a lunar soil deep sampling drill rod in a closed state with a cutting separation blade;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic diagram illustrating a state that a cutting separation blade of the lunar soil deep sampling drill rod is propped open by an internal coring pipe;
FIG. 4 is an enlarged view of the portion B in FIG. 3;
FIG. 5 is a schematic structural view of a sample locking structure according to the present invention;
FIG. 6 is a schematic view of the state change of the cutting blade according to the present invention;
FIG. 7 is a schematic view of the initial state and the tightening state of the clasp of the present invention;
fig. 8 is a schematic diagram illustrating the position change of the pin in the limiting chute according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a drill rod body; 2. a drill bit; 3. taking a core pipe from the inside; 31. a pin; 4. cutting off the blocking piece; 41. a torsion spring; 42. an ear plate; 5. a clasping ring; 6. a cutting separation blade mounting seat; 61. a first limiting chute; 62. a first limiting section; 7. a lock cylinder mechanism connecting piece; 71. a second limiting chute; 72. a second limiting section; 73. an accommodating space; 8. a wedge block; 9. and driving the mounting joint.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
As shown in fig. 1 to 8, the lunar soil deep sampling drill rod with a sample locking function of the present embodiment includes a drill rod body 1, a sample locking structure and an internal coring pipe 3, wherein a sample blocking mechanism is arranged in the sample locking structure; the internal coring pipe 3 and the sample locking structure are respectively sleeved in the drill rod body 1 and can axially move relative to the drill rod body 1, a pin 31 is arranged on the outer side wall of one end of the internal coring pipe 3, a limiting sliding groove is arranged on the inner side wall of the sample locking structure, one end of the internal coring pipe 3 is sleeved in the sample locking structure, and the pin 31 is slidably arranged in the limiting sliding groove; the internal coring pipe 3 moves axially relative to the sample lock structure, and the sample blocking mechanism is changed from an opened state by the internal coring pipe 3 to a closed state. The lower end of the drill rod body 1 is connected with a drill bit 2, and the sample locking structure is arranged close to the drill bit 2.
The deep sampling drilling rod of lunar soil of this embodiment adopts double-deck drilling rod structure, and the outside external screw thread drilling rod that adopts can effectively improve and creep into efficiency, and inside coring pipe adopts the polished rod that has sample locking structure, can be more quick carry the sample. The inside core taking pipe is connected with the sample locking structure through the pin sliding groove, so that the sample drilling and taking process can be guaranteed to be fixed at the relative position of the inside core taking pipe and the sample locking structure through the limiting sliding groove, and the inside core taking pipe and the sample locking structure can be guaranteed to slide relatively in the sample extracting process. When extracting the sample, only need take out inside coring pipe, need not take out outside drilling rod body, the sample extraction process is convenient, does not need solitary drilling rod hoisting device.
As shown in fig. 1 to 6, the sample blocking mechanism of the present embodiment includes a plurality of cutting blades 4, and the plurality of cutting blades 4 are respectively installed in the sample locking structure; before the sampling, it is a plurality of cut off separation blade 4 quilt inside coring pipe 3 struts, after the sampling, it is a plurality of cut off separation blade 4 closure formation one hinders the section. The internal cutting separation blade 4 in the initial state is opened, the position of the cutting separation blade 4 is limited through the internal coring pipe 3, the internal coring pipe 3 is guaranteed to be stressed, deformed and stored with energy, when the internal coring pipe 3 is upwards extracted to exceed the highest point of the cutting separation blade 4, the cutting separation blade 4 is closed under the action of elasticity, a sample is cut off, and the sample is packaged in the internal coring pipe 3.
As shown in fig. 6, in a specific aspect of the present embodiment, the cutting blade 4 is installed in the sample locking structure by a torsion spring 41. The torsional spring is used for providing elastic restoring force for closing the cutting separation blade. As shown in fig. 6, a plurality of gaps are provided on the end face of one end of the cutting separation blade mounting seat 6, a pin shaft is installed in the gap, a torsion spring 41 is sleeved on the pin shaft, two parallel ear plates 42 are formed on the surface of the cutting separation blade 4, the pin shaft penetrates through the ear plates, two ends of the torsion spring 41 are respectively abutted in the gap of the cutting separation blade mounting seat 6 and on the part of the cutting separation blade 4 between the two ear plates.
As shown in fig. 1 to 6, in a preferred embodiment of the present embodiment, the cutting blade 4 has a fan-shaped structure, an arc-shaped end of the cutting blade is installed in the sample locking structure, a tip end of the cutting blade is a free end, and when the cutting blade is closed, the tip end of the cutting blade 4 is located on the axis of the cutting blade installation seat 6. The cutting-off separation blades with the fan-shaped structures can be unfolded or closed like petals, installation and operation are convenient, and the cutting-off effect on samples is better.
According to a specific scheme of this embodiment, as shown in fig. 6, the number of the cutting separation blades 4 is preferably 4, the cutting separation blades 4 are of a quarter-sector structure, the four cutting separation blades 4 form a set of cutting locking assemblies, the cutting separation blades 4 in the initial state are opened, the positions of the cutting separation blades 4 are limited by the internal coring pipe 3, the internal coring pipe 3 is guaranteed to be stressed to deform and store energy, when the internal coring pipe 3 is extracted upwards to exceed the highest point of the cutting separation blades 4, the cutting separation blades 4 are closed under the action of elastic force, a sample is cut off, and the sample is packaged inside the internal coring pipe 3. In fig. 6, a is a schematic view of a state in which 4 cutting blades 4 are opened by the internal coring pipe 3; b is a schematic diagram of a state that after the internal coring pipe 3 cancels the restriction of 4 cutting baffle plates 4, when the sample is hard, the cutting baffle plates 4 can not be completely closed; c is a schematic view of the fully closed state of 4 cutting flaps 4.
As shown in fig. 6, the free end of the cutting blade 4 of this embodiment is a barb structure, and the blocking surface formed by the barb structure is arched upward to form a spherical-like packaging structure. If the lowest end of the drilled sample is hard lunar rock, when the cutting separation blade is not enough to cut off the sample under the action of spring force, the cutting separation blade is in a semi-closed barb form at the moment, and the sample can be tightly locked.
As shown in fig. 1 to 5, the sample locking structure of this embodiment includes a cutting blade mounting seat 6 and a lock cylinder mechanism connecting piece 7, the cutting blade mounting seat 6 is screwed at one end of the lock cylinder mechanism connecting piece 7, and the cutting blade 4 is mounted at one end of the cutting blade mounting seat 6 located in the lock cylinder mechanism connecting piece 7; a first limiting sliding groove 61 is arranged in the hollow structure of the cutting separation blade mounting seat 6, a second limiting sliding groove 71 corresponding to the first limiting sliding groove 61 is arranged in the hollow structure of the lock cylinder mechanism connecting piece 7, and the pin 31 slides in the first limiting sliding groove 61 and the second limiting sliding groove 71 corresponding to the first limiting sliding groove 61. The first limiting sliding groove 61 and the second limiting sliding groove 71 are respectively arranged in parallel to the axis of the lock cylinder mechanism connecting piece, the first limiting sliding groove 61 and the second limiting sliding groove 71 are preferably 4 and are evenly arranged side by side, the limiting sliding grooves are respectively formed in the cutting separation blade mounting seat and the lock cylinder mechanism connecting piece, when the pin slides out of the first limiting sliding groove, the constraint of the cutting separation blade on the inner core taking pipe is removed, the inner core taking pipe can continue to slide along the second limiting sliding groove, and a sample is taken out.
As shown in fig. 1 to fig. 5, in a preferred embodiment of this embodiment, the sample locking structure further includes a wedge block 8, the wedge block 8 is screwed to an end of the cutting blade mounting seat 6 away from the lock cylinder mechanism connecting piece 7, and the wedge block 8 is a hollow tapered closing structure; the sample blocking mechanism further comprises a holding ring 5, wherein the holding ring 5 is arranged in the tapered closing-in structure, and the holding ring is a C-shaped holding ring. A wedge block 8 is placed in said drill bit 2. But C type of having barb and outer conical surface is embraced and is tightly encircled adaptation free activity arrange in the toper binding off structure, when wedge 8 along with inside coring 3 upwards draw the in-process, the outer conical surface of C type is embraced to the toper binding off structure extrusion C type of wedge 8, makes its radial dimension shrink, pins the sample, prevents that it from droing. As shown in fig. 7, the C-shaped clasp of this embodiment is specifically annular, and a ring of clasping sheets with barb structures are provided thereon, so that the cross section of the whole clasp is C-shaped.
The wedge 8 of this embodiment forms two layers of sample locking subassemblies with 5 combinations of embracing of ring, with the cooperation of cutting off separation blade 4, forms double-deck sample locking subassembly in 1 bottom of drilling rod body, can prevent effectively that the sample from droing at the promotion in-process. Double-deck sample locking subassembly not only can be with the locking of soft lunar soil, also can lock hard lunar rock. The sample locking structure is limited by the wedge-shaped block 8, the cutting separation blade mounting seat 6, the lock cylinder mechanism connecting piece 7, the C-shaped clasping ring and the cutting separation blade 4 to form a sample locking structure, and can adapt to the locking function of samples with various hardness.
As shown in fig. 2, 4 and 5, a specific solution of the present embodiment is that an accommodating space for accommodating the extended cutting blade 4 is formed in a position on the inner side wall of the lock cylinder mechanism connecting member 7 close to the cutting blade mounting seat 6. The containing space is formed in a sunken mode, namely the containing space is formed in a sunken mode on the inner side wall of the lower end of the core locking mechanism connecting piece 7, an internal thread is formed on the inner surface, close to the end portion, of the containing space, the cutting separation blade mounting seat 6 is mounted on the internal thread, the containing space is not filled with the cutting separation blade mounting seat 6, the remaining containing space is used for containing the cut separation blades which are spread, specifically, the figure 4 can be seen, the cutting separation blades can be conveniently placed in the containing space when being spread, and axial movement of the inner core taking tube is not affected.
As shown in fig. 8, in a preferred embodiment of the present invention, one end of the first limiting sliding groove 61, which is far away from the cutting blade 4, extends circumferentially to form a first limiting section 62, that is, the first limiting section 62 is located at the lower end of the first limiting sliding groove 61; one end of the second limiting sliding groove 71, which is far away from the cutting baffle 4, extends circumferentially to form a second limiting section 72, that is, the second limiting section 72 is located at the upper end of the second limiting sliding groove 71. The limiting section I and the limiting section II are arranged to facilitate the up-and-down limiting of the internal core taking pipe. The extending directions of the first position-limiting section 62 and the second position-limiting section 72 can be the same or different. The first limiting section 62 and the second limiting section 72 also adopt a sliding groove form, so that the pin can conveniently slide into the limiting position. In fig. 8, a is a schematic view of the structure state that the pin 31 is located in the first limiting section 62 in the cutting blade mounting seat 6; with the extraction of the inner coring pipe 3, the pin 31 slides into the second limiting chute 71 from the first limiting chute 61, and b is a schematic structural state diagram of the pin 31 in the second limiting chute 71 on the lock cylinder mechanism connecting piece 7; c is a structural state schematic diagram of the pin 31 in the second limit section 72 at the top end of the second limit chute 71.
As shown in fig. 3, the sampling tool of the present embodiment further includes a driving fitting 9, and the inner coring pipe 3 is connected to the drill pipe body 1 through the driving fitting 9.
As shown in fig. 1 to 4, a step is provided on a part of the outer side wall of the internal coring pipe 3 located in the sample locking structure, so that the part of the internal coring pipe 3 located in the sample locking structure is thinner, and the other parts are thicker, and the step can limit the length of the internal coring pipe 3 extending into the sample locking structure, so that the internal coring pipe 3 can not be separated from the sample locking structure.
Specifically, as shown in fig. 1 to 4, a circle of convex ribs are arranged on the inner side wall of the lower end of the drill rod body 1 in the embodiment, the drill bit 2 is installed at the lower end of the drill rod body 1 and abuts against the lower end of the convex ribs, the lower end of the lock cylinder mechanism connecting piece 7 abuts against the upper end of the convex ribs, the part of the lower end of the cutting baffle installation seat 6, which exceeds the lock cylinder mechanism connecting piece 7, abuts against the inner side wall of the convex ribs, and when the lock cylinder mechanism connecting piece 7 penetrates into the drill rod body 1, the lower end of the lock cylinder mechanism connecting piece 7 cannot penetrate out of the lower end of the drill rod body 1, but abuts against the upper end of the convex ribs; and the wedge block 8 is screwed on the cutting baffle mounting seat 6 and is positioned in the drill bit 2. The outer side wall of the lock cylinder mechanism connecting piece 7 abuts against the inner side wall of the drill rod body 1, the inner core taking pipe 3 and the drill rod body 1 are arranged at intervals, and the driving mounting joint 9 is mounted at the upper ends of the drill rod body 1 and the inner core taking pipe 3 and is limited in a gap between the inner core taking pipe 3 and the drill rod body 1.
The working process of the lunar soil deep sampling drill rod with the sample locking function is that when a spaceman conducts deep lunar sampling, the driving installation joint 9 is firstly connected with the handheld drill rod driving device to conduct downward drilling sampling, when 90% of first drill rods penetrate into lunar soil, the driving installation joint is taken down to be connected with new inner and outer drill rods, then the driving installation joint 9 is connected with the drill rod driving device, and downward drilling is continued until the sampling depth is reached. In the sample extraction process, firstly, the internal coring pipe 3 is rotated by a preset angle (for example, 90 degrees), the pin 31 on the internal coring pipe slides out of the first limiting section 62 on the cutting baffle mounting seat 6, then the internal coring pipe 3 is extracted upwards, the pin 31 slides upwards along the first limiting sliding groove 61, when the lowest point of the internal coring pipe 3 exceeds the highest point of the cutting baffle 4, the cutting baffle 4 is closed under the elastic force of the torsion spring 41, the lunar soil sample is cut off and packaged in the internal coring pipe 3, at the moment, the pin 31 on the internal coring pipe 3 slides into the second limiting sliding groove 71 on the lock cylinder mechanism connecting piece 7 and slides to the second limiting section 72, then the internal coring pipe 3 is rotated by the preset angle, the pin 31 on the internal coring pipe is placed in the second limiting section 72, the internal coring pipe 3 and the lock cylinder mechanism connecting piece 7 are relatively locked, and then the internal coring pipe 3 is continuously extracted upwards, the sample lock will rise with the inner core barrel 3 until the sample is completely removed. If the lowest end of the drilled sample is hard lunar rock, the cutting separation blade 4 is not enough to cut the sample under the action of the elasticity of the torsion spring 41, and the cutting separation blade 4 is in the form of a semi-closed barb and tightly locks the sample. In addition, in inside coring 3 extraction processes, the C type that has inside barb is embraced and is encircled under the constriction structure extrusion of wedge 8, and radial shrink locks the sample, cuts off separation blade 4 this moment and embraces 5 double-deck locking structures of constituteing of embracing tightly, prevents that the bottom sample from droing.
According to the invention, the double-layer sample locking assembly is arranged at the bottom of the drill rod body, so that the sample can be effectively prevented from falling off in the lifting process; the double-layer sample locking assembly can lock soft lunar soil and also can lock hard lunar rock; when extracting the sample, only need take out inside coring pipe, need not take out external screw thread drilling rod body, the sample extraction process is convenient, does not need independent drilling rod hoisting device. Adopt double-deck drilling rod structure, the outside adopts the external screw thread drilling rod, can have effectively to improve and creep into efficiency, and inside coring pipe adopts the polished rod that has sample locking subassembly, can carry the sample more fast.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A lunar soil deep sampling drill rod with a sample locking function is characterized by comprising a drill rod body, a sample locking structure and an internal core taking pipe, wherein a sample blocking mechanism is arranged in the sample locking structure; the inner coring pipe and the sample locking structure are respectively sleeved in the drill rod body and can axially move relative to the drill rod body, a pin is arranged on the outer side wall of one end of the inner coring pipe, a limiting sliding groove is arranged on the inner side wall of the sample locking structure, one end of the inner coring pipe is sleeved in the sample locking structure, and the pin is slidably arranged in the limiting sliding groove; the internal coring pipe axially moves relative to the sample locking structure, so that the sample blocking mechanism is changed from a state of being opened by the internal coring pipe to a closed state; the sample blocking mechanism comprises a plurality of cutting separation blades which are respectively arranged in the sample locking structure; before sampling, a plurality of cut-off separation blades are propped open by the internal coring pipe, and after sampling, the cut-off separation blades are closed to form a blocking surface.
2. The lunar soil deep sampling drill rod with sample locking function as claimed in claim 1, wherein the cut-off blade is mounted in the sample locking structure by a torsion spring.
3. The lunar soil deep sampling drill rod with sample locking function as claimed in claim 1, wherein the cutting baffle is of a fan-shaped structure, and an arc-shaped end of the cutting baffle is installed in the sample locking structure.
4. The lunar soil deep sampling drill rod with the sample locking function as claimed in claim 1, wherein the free end of the cutting baffle is of a barb structure, and a blocking surface formed by the cutting baffle is arched upwards.
5. The lunar soil deep sampling drill rod with the sample locking function as claimed in any one of claims 1 to 4, wherein the sample locking structure comprises a cutting blade mounting seat and a lock cylinder mechanism connecting piece, the cutting blade mounting seat is connected with one end of the lock cylinder mechanism connecting piece in a threaded mode, and the cutting blade is mounted on one end, located in the lock cylinder mechanism connecting piece, of the cutting blade mounting seat; the lock core mechanism connecting piece is characterized in that a first limiting sliding groove is formed in the hollow structure of the cutting separation blade mounting seat, a second limiting sliding groove corresponding to the first limiting sliding groove is formed in the hollow structure of the lock core mechanism connecting piece, and the pin is arranged in the first limiting sliding groove and the second limiting sliding groove corresponding to the first limiting sliding groove in a sliding mode.
6. The lunar soil deep sampling drill rod with the sample locking function as claimed in claim 5, wherein the sample locking structure further comprises a wedge-shaped block, the wedge-shaped block is in threaded connection with one end of the cutting separation blade mounting seat far away from the lock cylinder mechanism connecting piece, and the wedge-shaped block is in a hollow conical closing-up structure; the sample blocking mechanism further comprises a holding ring, and the holding ring is arranged in the tapered closing-in structure.
7. The lunar soil deep sampling drill rod with the sample locking function as claimed in claim 5, wherein an accommodating space for accommodating the cutting blade in the expanded state is formed on the inner side wall of the lock cylinder mechanism connecting piece at a position close to the cutting blade mounting seat.
8. The lunar soil deep sampling drill rod with the sample locking function as claimed in claim 5, wherein one end of the first limiting chute far away from the cutting blade extends circumferentially to form a first limiting section, and one end of the second limiting chute far away from the cutting blade extends circumferentially to form a second limiting section.
9. The lunar soil deep sampling drill rod with the sample locking function as claimed in any one of claims 1 to 4 and 6 to 8, further comprising a driving installation joint, wherein the inner coring pipe is connected with the drill rod body through the driving installation joint.
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| CN202010894384.1A CN111911088B (en) | 2020-08-31 | 2020-08-31 | Lunar soil deep layer sampling drill rod with sample locking function |
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| CN112729947B (en) * | 2020-12-22 | 2021-10-15 | 中国水利水电科学研究院 | Series-type deepwater automatic depth-setting water quality sample collector |
| CN112922551B (en) * | 2021-03-24 | 2022-02-18 | 成都理工大学 | Rock mass coring bit under high ground stress |
| CN113252383B (en) * | 2021-05-17 | 2022-11-15 | 昆明理工大学 | Original state appearance normal position is taken a sample fast, is encapsulated, is cut all-in-one |
| CN113503133B (en) * | 2021-07-12 | 2024-06-14 | 辽东学院 | Novel soil sampling drill and application method thereof |
| CN114112491B (en) * | 2021-11-16 | 2023-09-19 | 深圳大学 | Coring cutting-off sealing device and sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6550549B2 (en) * | 2000-08-25 | 2003-04-22 | Honeybee Robotics, Ltd. | Core break-off mechanism |
| US6729416B2 (en) * | 2001-04-11 | 2004-05-04 | Schlumberger Technology Corporation | Method and apparatus for retaining a core sample within a coring tool |
| CN106134448B (en) * | 2011-09-16 | 2014-02-19 | 北京卫星制造厂 | Month soil sampler is got core actuating unit |
| CN103837372B (en) * | 2014-03-05 | 2016-01-20 | 北京航空航天大学 | A kind of many bars sampling deep layer device Sampling driller with corer |
| CN107796647B (en) * | 2017-10-17 | 2019-12-31 | 河海大学 | Soil sampler and sampling method thereof |
| CN109973034B (en) * | 2018-12-26 | 2024-04-19 | 深圳大学 | Rock sample in-situ fidelity coring system |
| CN109779553A (en) * | 2019-03-07 | 2019-05-21 | 中国地质科学院勘探技术研究所 | A kind of totally-enclosed boring sample device |
| CN210217672U (en) * | 2019-07-11 | 2020-03-31 | 中电建路桥集团有限公司 | Core breaking and coring device while drilling |
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