A sampling device for geological survey

Abstract

The present invention relates to the technical field of geological sampling, and specifically discloses a sampling device for geological survey, including a columnar shell, a sleeve arranged in the shell, a pull rod arranged in the sleeve, and a sampling device; the sampling device includes a first spring, a first slide plate, a limit device, a first slide hole, a pair of enclosure devices, and a sampling box; the enclosure device includes a slide bar, a hinged rod hinged to the lower end of the slide bar, an extrusion plate hinged to the lower end of the hinged rod, and a fixed plate fixed to the lower end of the shell; one side of the extrusion plate is hinged to the fixed plate; the sampling box includes a horizontally arranged connecting plate, a pair of enclosures respectively arranged on both sides of the connecting plate, and a connecting head arranged on the upper side of the connecting plate; the lower side of an extrusion plate abuts against the upper side of a enclosure; the upper end of the pull rod is arranged above the shell, and the lower end of the pull rod is detachably connected to the connecting head. The sampling device for geological survey of the present invention can efficiently perform sampling operations at geological depths.

Description

Technical Field

[0001] The invention relates to the technical field of geological sampling, and in particular to a sampling device for geological survey. Background Art

[0002] It is a very common practice to conduct artificial exploration of mineral resources before mining. It determines the type, distribution, shape, scale and other information of the mineral deposit by investigating and analyzing the geological, geophysical, chemical and other characteristics of the surface and underground.

[0003] In addition to using special detection equipment for detection in geological sampling, it is more common to directly sample the stone layer deep underground. Existing sampling equipment such as CN220207115U, a soil sampling device for geological survey that is easy to clean, CN113358409A, a soil layer sampling device for hydrogeological survey, CN215726934U, a sampler for geological survey, etc., mostly come with drilling equipment, so that this type of equipment has a drilling function, and when sampling, it can be drilled and sampled by itself without relying on a special drilling rig. However, due to the size, the drilling rigs that come with this type of equipment are mostly low-power and short drill rods, so they can only sample depths within a few meters below the surface. For deeper sampling, it is still necessary to rely on traditional drilling equipment to drill to a certain depth first, and then take out the soil and stone samples at the bottom of the borehole for analysis. However, for deep hole sampling, the operation is more complicated. The operation of the sampler at the bottom of the deep hole is difficult to control, and the sampler with power equipment also needs to pull wires, etc. After taking out the sampler, the sample in the sampler needs to be taken out and the sampler needs to be cleaned to avoid contamination between samples, making the entire operation process more cumbersome and time-consuming. Therefore, it is necessary to design a device that can sample deep holes more efficiently. Summary of the invention

[0004] The object of the present invention is to provide a sampling device for geological survey, which can efficiently perform sampling operations at geological depths.

[0005] The present invention is implemented through the following technical scheme: the sampling device for geological survey of the present invention comprises a columnar shell, a sleeve arranged in the shell, a pull rod arranged in the sleeve, and a sampling device; the cross section of the interior of the sleeve along the horizontal direction is square; the sampling device comprises a first spring arranged in the shell, an annular first slide plate arranged at the lower end of the first spring, a limiting device connected to the first slide plate, a pair of first sliding holes opened in the lower end wall of the shell, a pair of enclosing devices symmetrically arranged below the first slide plate, and a sampling box arranged below the pair of enclosing devices; the enclosing device comprises a first slide plate connected to the lower side of the first slide plate A sliding rod connected and slidably arranged in the first sliding hole, a hinged rod hinged to the lower end of the sliding rod, an extrusion plate hinged to the lower end of the hinged rod, and a fixed plate fixedly arranged at the lower end of the shell; one side of the extrusion plate is hinged to the fixed plate; the sampling box includes a horizontally arranged connecting plate, a pair of surrounding frames respectively arranged on both sides of the connecting plate, and a connecting head arranged on the upper side of the connecting plate; the surrounding frame is hinged to the connecting plate through a rotating shaft, and a torsion spring is arranged on the rotating shaft; the lower side of one of the extrusion plates is abutted against the upper side of one of the surrounding frames; the upper end of the pull rod is arranged above the shell, and the lower end of the pull rod is detachably connected to the connecting head.

[0006] Furthermore, it also includes a lifting device for driving the pulling rod to move upward; the lifting device includes an annular second slide plate arranged below the first slide plate, a first sealing film for connecting the inner ring of the first slide plate and the inner ring of the second slide plate, and a second sealing film for connecting the outer ring of the first slide plate and the outer ring of the second slide plate; the first slide plate, the second slide plate, the first sealing film, and the second sealing film together form a sealed cavity; the lifting device also includes a receiving groove opened on the side wall of the upper end of the sleeve, an air pressure tube vertically arranged in the receiving groove, a push rod sealingly slidably arranged in the air pressure tube, and an air guide tube for connecting the sealed cavity and the air pressure tube; the push rod is connected to the pulling rod, and the lower end of the air pressure tube is a sealed end.

[0007] Furthermore, the lifting device also includes a second sliding hole opened on the top wall of the shell, a first limit block arranged on the side wall of the upper end of the push rod, a horizontally arranged top plate, insertion holes opened on both ends of the top plate, and a second limit block arranged on the side wall of the pull rod; the pull rod is arranged through the top plate, the lower end of the second sliding hole is connected with the accommodating groove, the push rod is slidably arranged in the second sliding hole, the first limit block is arranged above the shell, the push rod is passed through the insertion hole, the top plate is arranged on the upper side of the first limit block, and the second limit block is arranged on the upper side of the top plate.

[0008] Furthermore, the lifting device also includes a second spring arranged between the first slide plate and the second slide plate; a pair of slide rods are connected to the upper ends with an annular third slide plate, a gap is provided between the third slide plate and the second slide plate, and the third slide plate and the second slide plate are connected by a connecting rope.

[0009] Furthermore, the thickness of the sampling box formed by a pair of the surrounding frames and the connecting plates is L, the width of the gap between a pair of the fixing plates is L, and the width of the inside of the sleeve is L.

[0010] Furthermore, through holes are respectively opened on both sides of the shell; a pair of limiting devices are provided, and the pair of limiting devices are respectively arranged on both sides of the first slide; the limiting device includes an inverted L-shaped pull hook connected to the upper side of the first slide, a first hanging ring hung on the pull hook, a third sliding hole opened on the side wall of the shell in the vertical direction, a pull rope arranged in the third sliding hole, and a second hanging ring arranged at the upper end of the pull rope; the lower end of the pull rope is connected to the first hanging ring, and the pull hook is arranged in the through hole.

[0011] Furthermore, the limiting device also includes an electric telescopic cylinder vertically arranged inside the top end of the shell, and a pair of third hanging rings arranged on the top of the shell; the telescopic rod of the electric telescopic cylinder is arranged through the shell; a pair of second hanging rings are both hung on the telescopic rod of the electric telescopic cylinder, and a pair of pull ropes are respectively arranged through a pair of third hanging rings.

[0012] Furthermore, the sampling box also includes a pair of arc-shaped spring sheets; the pair of spring sheets are respectively arranged in a pair of the frames, one side of the spring sheet is fixedly connected to the inner wall of the frame close to the connecting plate, and the other side is in a suspended state; after the pair of frames are closed, a gap is provided between the side edges of the pair of frames.

[0013] Furthermore, the inner wall of the sleeve is provided with a card slot on both sides of the upper end thereof; it also includes an inverted U-shaped clamping plate and a clearance hole opened on the upper side of the clamping plate; the pull rod is arranged through the clearance hole, and both sides of the clamping plate are arranged in the card slot; the width inside the clamping plate is L.

[0014] Furthermore, the lower side surface of the extrusion plate is arc-shaped.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: the sampling device for geological survey of the present invention uses a drill to drill a deep hole of appropriate depth in advance before use, then takes out the drill bit, compresses the first spring (limits the first spring by a limit device after compression), opens the sampling box and makes its opening face downward, sticks the surrounding frame of the sampling box to the lower side of the pressure plate, uses a pull rod to pass through the casing and connect it to the connector on the connecting plate (threaded connection), pulls the sampling box by the pull rod (a pair of surrounding frames on the sampling box are naturally horizontally unfolded under the action of the torsion spring), then fixes the traction rope on the shell, and slowly sends the shell into the deep hole. When it reaches the bottom of the deep hole, the limit device stops the pulling rope from the shell and stops the pulling rope from the shell. The device releases the first spring, and the first spring releases the elastic force to push the first slide plate, the slide bar, the hinged rod, and the extrusion plate downward in sequence, and finally pushes the enclosure frame to rotate around the rotating shaft and enclose together. At this time, the gravel particles in the enclosure frame will be enclosed in the sampling box formed by a pair of enclosure frames and connecting plates. Finally, the shell can be taken out from the deep hole by the traction rope. The sampling box can be taken out from the top or bottom of the casing. After taking it out, since the ore sample is already in the sampling box, the sampling box can be directly and quickly taken out for preservation and packaging, and the sampling box can be quickly installed after the sampling box is taken out. After the sampling work in multiple areas is completed, all the sampling boxes can be uniformly transferred and tested. In this way, the sampling efficiency is higher, and there is no need to go through the cumbersome steps of taking the sample out of the shell, and the sample will not contact the shell, so there will be no mutual contamination between the samples. In addition, there is no drilling rig-like structure in the device, so the structure is simpler, the volume is more compact, and it can be adapted to small-volume drilling holes, does not require a large power supply, and does not require a long wire for power supply, so it can take samples with very deep depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a sampling device for geological survey provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure inside the housing provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the electric telescopic cylinder provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a housing portion provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure inside the housing provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a state when the enclosing device provided by an embodiment of the present invention is in operation; Figure 7 A schematic diagram of the structure of two states of the enclosing device provided by an embodiment of the present invention when in operation; Figure 8A schematic diagram of the structure of the three states of the enclosing device during operation provided by an embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a lifting device provided in an embodiment of the present invention; Fig.10 A schematic diagram of the structure of the pull rod part provided by an embodiment of the present invention; Fig.11 A schematic diagram of the structure of the sampling box provided by an embodiment of the present invention when it is unfolded; Fig.12 A schematic structural diagram of a sampling box provided by an embodiment of the present invention when it is closed from one viewing angle; Fig.13 A schematic diagram of the structure of the sampling box provided by an embodiment of the present invention when it is enclosed from two viewing angles; Fig.14 for Figure 1 Enlarged view of part A.

[0017] Icons: 10-housing, 11-sleeve, 12-pillar, 13-through hole, 14-second sliding hole, 15-slot, 16-first sliding hole, 17-accommodating groove, 18-third sliding hole, 19-pull rod, 21-first spring, 22-first slide plate, 23-enclosing device, 231-slide rod, 232-hinged rod, 233-extrusion plate, 234-fixed plate, 24-third slide plate, 30-sampling box, 31-connecting plate, 32-enclosing frame, 33-rotating shaft, 34-shrapnel, 35-connecting head, 36 - splint, 37- clearance hole, 40- limiting device, 41- pull hook, 42- pull rope, 43- first hanging ring, 44- second hanging ring, 45- third hanging ring, 46- electric telescopic cylinder, 50- pulling device, 51- second slide plate, 52- first sealing membrane, 53- second sealing membrane, 54- air pressure tube, 55- push rod, 56- air guide tube, 57- first limiting block, 58- top plate, 59- plug hole, 510- second limiting block, 511- second spring, 512- sealing chamber, 513- connecting rope. DETAILED DESCRIPTION

[0018] Example The following is further described in conjunction with specific embodiments. Figure 1 -Attached Fig.14As shown, the sampling device for geological survey of this embodiment includes a columnar shell 10, a sleeve 11 arranged in the shell 10, a pull rod 19 arranged in the sleeve 11, and a sampling device; the cross section of the sleeve 11 along the horizontal direction is square; the sampling device includes a first spring 21 arranged in the shell 10, an annular first slide plate 22 arranged at the lower end of the first spring 21, a limiting device 40 connected to the first slide plate 22, a pair of first sliding holes 16 opened in the lower end wall of the shell 10, a pair of enclosing devices 23 symmetrically arranged below the first slide plate 22, and a sampling box 30 arranged below the pair of enclosing devices 23; the enclosing device 23 includes a first slide plate 22 connected to the lower side of the first slide plate 22 and slidably arranged on the first slide plate 22. The slide rod 231 in the slide hole 16, the hinge rod 232 hinged to the lower end of the slide rod 231, the extrusion plate 233 hinged to the lower end of the hinge rod 232, and the fixed plate 234 fixed to the lower end of the shell 10; one side of the extrusion plate 233 is hinged to the fixed plate 234; the sampling box 30 includes a horizontally arranged connecting plate 31, a pair of surrounding frames 32 respectively arranged on both sides of the connecting plate 31, and a connecting head 35 arranged on the upper side of the connecting plate 31; the surrounding frame 32 is hinged to the connecting plate 31 through a rotating shaft 33, and a torsion spring is arranged on the rotating shaft 33; the lower side of an extrusion plate 233 abuts against the upper side of a surrounding frame 32; the upper end of the pull rod 19 is arranged above the shell 10, and the lower end of the pull rod 19 is detachably connected to the connecting head 35. Specifically, before use, a deep hole of appropriate depth is drilled in advance using a drill rig, then the drill bit is taken out, the first spring 21 is compressed (after compression, the first spring 21 is limited by the limiting device 40), the sampling box 30 is opened and its opening is facing downward, the surrounding frame 32 of the sampling box 30 is attached to the lower side of the pressure plate, the pull rod 19 is used to pass through the sleeve 11 and connected to the connector 35 on the connecting plate 31 (threaded connection), the sampling box 30 is pulled by the pull rod 19 (a pair of surrounding frames 32 on the sampling box 30 are naturally horizontally unfolded under the action of the torsion spring), then the traction rope is fixed to the shell 10, and the shell 10 is slowly sent into the deep hole. When it reaches the bottom of the deep hole, the limiting device 40 releases the first spring 21, and the first spring 21 releases its elastic force to push the first slide plate 22, the slide rod 231, the hinged rod 232, and the extrusion plate 233 downward in sequence, and finally pushes the surrounding frame 32 to rotate around the rotating shaft 33 and enclose together (the morphological changes of this process refer to the attached Figure 6-7), at this time, the gravel particles in the enclosure 32 will be enclosed in the sampling box 30 formed by a pair of enclosures 32 and a connecting plate 31, and finally the housing 10 can be taken out of the deep hole by a traction rope. The sampling box 30 can be taken out from the top or bottom of the casing 11. After taking it out, since the ore sample is already in the sampling box 30, the sampling box 30 can be directly and quickly taken out for preservation and packaging, and the sampling box 30 can be quickly installed after it is taken out. After the sampling work of multiple areas is completed, all the sampling boxes 30 can be uniformly transferred and tested. In this way, the sampling efficiency is higher, and there is no need to go through the cumbersome steps of taking the sample out of the housing 10, and the sample will not contact the housing 10, so there will be no mutual contamination between the samples. In addition, there is no drilling rig-like structure in the device, so the structure is simpler, the volume is more compact, and it can be adapted to small-volume boreholes, and does not require a huge power supply, and does not require a long wire for power supply, so it can take samples at very deep depths. It should be noted that a support column 12 may be provided below the housing 10 to prevent the sampling box 30 from completely contacting the bottom of the borehole.

[0019] In this embodiment, a lifting device 50 is also included for driving the pull rod 19 to move upward; the lifting device 50 includes an annular second slide 51 arranged below the first slide 22, a first sealing film 52 for connecting the inner ring of the first slide 22 and the inner ring of the second slide 51, and a second sealing film 53 for connecting the outer ring of the first slide 22 and the outer ring of the second slide 51; the first slide 22, the second slide 51, the first sealing film 52, and the second sealing film 53 are surrounded by a sealed cavity 512; the lifting device 50 also includes a receiving groove 17 opened on the upper end side wall of the sleeve 11, an air pressure tube 54 vertically arranged in the receiving groove 17, a push rod 55 sealingly slidably arranged in the air pressure tube 54, and an air guide tube 56 for connecting the sealed cavity 512 and the air pressure tube 54; the push rod 55 is connected to the pull rod 19, and the lower end of the air pressure tube 54 is a sealed end. The lifting device 50 also includes a second sliding hole 14 opened on the top wall of the shell 10, a first limit block 57 arranged on the upper end side wall of the push rod 55, a horizontally arranged top plate 58, insertion holes 59 opened at both ends of the top plate 58, and a second limit block 510 arranged on the side wall of the pull rod 19; the pull rod 19 is arranged through the top plate 58, the lower end of the second sliding hole 14 is connected to the accommodating groove 17, the push rod 55 is slidably arranged in the second sliding hole 14, the first limit block 57 is arranged above the shell 10, the push rod 55 is inserted into the insertion hole 59, the top plate 58 is arranged on the upper side of the first limit block 57, and the second limit block 510 is arranged on the upper side of the top plate 58. Specifically, the function of the lifting device 50 is to lift the pull rod 19 upward for a certain distance after a pair of frames 32 are closed, so as to move the sampling box 30 above a pair of extrusion plates 233, so that the pair of extrusion plates 233 are in a V-shaped structure. The vibration generated by the collision between the sampling box 30 and the inner wall of the borehole during the upward movement and the V-shaped extrusion plates 233 can better clamp the sampling box 30 to prevent it from escaping from the pair of extrusion plates 233. The working principle of this process is as follows: after the first spring 21 is released, the first slide plate 22, the second slide plate 51, the third slide plate 24 are squeezed step by step, and the slide bar 231 is squeezed (as shown in the above paragraph). When a pair of frames 32 are surrounded, the first slide plate 22 and the second slide plate 51 will continue to move downward for a certain distance under the action of inertia and the elastic force of the first spring 21 that has not been fully released, and the movement of the second slide plate 51 will squeeze the space in the sealed cavity 512, thereby squeezing out the air in the sealed cavity 512 (liquid can also be used to replace the air in the sealed cavity 512), so that the air passes through the air guide tube 56 (the air guide tube 56 is long enough so that it will not be broken) and enters the air pressure tube 54, and pushes the push rod 55 upward (as shown in the attached figure). Fig. 9 As shown in FIG. 1 , the push rod 55 moves upward and pushes the top plate 58 upward through the first limit block 57, and the top plate 58 pushes the pull rod 19 upward through the second limit plate, thereby pushing the sampling box 30 online by the pull rod 19 for a certain distance (the morphological changes of this process refer to the attached Figure 7-8). It should be noted that, referring to the accompanying drawings, when the pair of frames 32 are closed, there is still a certain gap between the third slide plate 24 and the inner bottom wall of the shell 10. When the sampling box 30 moves up a certain distance, the pair of extrusion plates 233 has space to move, so the third slide plate 24 can continue to move up a certain distance.

[0020] The lifting device 50 in this embodiment also includes a second spring 511 disposed between the first slide plate 22 and the second slide plate 51; a ring-shaped third slide plate 24 is connected to the upper end of a pair of slide bars 231, a gap is provided between the third slide plate 24 and the second slide plate 51, and the third slide plate 24 and the second slide plate 51 are connected by a connecting rope 513. Specifically, the impact force initially received by the sealing cavity 512 can be reduced by the second spring 511, so that the initial force of the first spring 21 can act on the slide bar 231 as much as possible, thereby realizing the enclosure of a pair of enclosure frames 32. In addition, a certain gap is provided between the second slide plate 51 and the third slide plate 24, so that the first slide plate 22 and the second slide plate 51 move downward first, and at this time, the elastic force of the first spring 21 is partially converted into the kinetic energy of the second slide plate 51, so that the force of the second slide plate 51 on the third slide plate 24 comes partly from the kinetic energy of the second slide plate 51 itself, rather than all from the elastic force of the first spring 21, so that the sealing cavity 512 is less squeezed during the movement of the third slide plate 24 and the slide bar 231. The function of the connecting rope 513 is to pull the enclosing device 23 back to its original position through the connecting rope 513 after the device is reset (ie, the first spring 21 is re-compressed).

[0021] The thickness of the sampling box 30 formed by the pair of surrounding frames 32 and the connecting plate 31 in this embodiment is L, the width of the gap between the pair of fixing plates 234 is L, and the width of the inside of the sleeve 11 is L. Specifically, the gap between the fixing plates 234 and the width of the inside of the sleeve 11 are slightly larger than the thickness of the sampling box 30 within the tolerance range, so that the sampling box 30 can be clamped to prevent the sample from falling out of the sampling box 30, and the sampling box 30 can move normally in the sleeve 11.

[0022] In this embodiment, through holes 13 are respectively provided on both sides of the shell 10; a pair of limiting devices 40 are provided, and the pair of limiting devices 40 are respectively provided on both sides of the first slide plate 22; the limiting device 40 includes an inverted L-shaped hook 41 connected to the upper side of the first slide plate 22, a first hanging ring 43 hung on the hook 41, a third sliding hole 18 provided in the side wall of the shell 10 in the vertical direction, a pull rope 42 provided in the third sliding hole 18, and a second hanging ring 44 provided at the upper end of the pull rope 42; the lower end of the pull rope 42 is connected to the first hanging ring 43, and the hook 41 is provided in the through hole 13. The limiting device 40 also includes an electric telescopic cylinder 46 vertically provided inside the top end of the shell 10, and a pair of third hanging rings 45 provided at the top of the shell 10; the telescopic rod of the electric telescopic cylinder 46 is provided through the shell 10; the pair of second hanging rings 44 are both hung on the telescopic rod of the electric telescopic cylinder 46, and the pair of pull ropes 42 are respectively provided through a pair of third hanging rings 45. Specifically, as shown in the attached Figure 2-3 As shown, the working principle of the limiting device 40 is to compress the first spring 21 through the hook 41. After compression, the hook 41 is hung on the first hanging ring 43, and then the second hanging ring 44 is hung on the telescopic rod of the electric telescopic cylinder 46 to limit the first spring 21. When the first spring 21 needs to be released, the electric telescopic cylinder 46 only needs to retract the telescopic rod. At this time, a pair of second hanging rings 44 will be detached from the telescopic rod of the electric telescopic cylinder 46, and the second hanging rings 44 lose their restrictions. The pull rope 42 has no restrictive effect on the first spring 21. At this time, the first spring 21 can release its elastic force, and the second hanging ring 44 will be blocked by the third hanging ring 45, so the second hanging ring 44 will not fall to the side wall of the housing 10 (it can avoid the housing 10 from interacting with the inner wall of the drill hole during the rising process). And the traction rope can be hung on the third hanging ring 45 to achieve the pulling effect on the housing 10. The electric telescopic cylinder 46 can be small or micro, and can be driven by a small battery to perform several operations. The electric telescopic cylinder 46 can be driven by timing control, wireless manual control, or wired manual control.

[0023] The sampling box 30 in this embodiment further includes a pair of arc-shaped spring pieces 34; the pair of spring pieces 34 are respectively arranged in a pair of enclosures 32, one side of the spring piece 34 is fixedly connected to the inner wall of the enclosure 32 near the connecting plate 31, and the other side is suspended; after the pair of enclosures 32 are closed, a gap is provided between the side edges of the pair of enclosures 32. Specifically, as shown in the attached Fig.11 As shown, the arc-shaped spring piece 34 can push the ore particles upward as much as possible, making them closer to the connecting plate 31, to prevent them from piling up on the lower side of the sampling box 30, and after the pair of frames 32 are closed, a gap is provided between the sides of the pair of frames 32, so that the pair of frames 32 can be closed as completely as possible.

[0024] In this embodiment, the sleeve 11 has two opposite sides of the inner wall of the sleeve 11, and a clamping groove 15 is provided. The sleeve 11 also includes an inverted U-shaped clamping plate 36 and a clearance hole 37 provided on the upper side of the clamping plate 36. The pull rod 19 is arranged through the clearance hole 37, and both sides of the clamping plate 36 are arranged in the clamping groove 15. The width of the inner side of the clamping plate 36 is L. Specifically, as shown in the attached Figure 12-13 As shown, since a torsion spring is provided on the rotating shaft 33 at the connection between a pair of surrounding frames 32 and the connecting plate 31, the sampling box 30 will remain in an open state in a natural state. In order to prevent the staff from accidentally opening the sampling box 30 after taking out the sampling box 30, thereby preventing the sample from being lost, a splint 36 can be provided at the upper end of the sleeve 11. Before the sampling box 30 is completely taken out from the upper end of the sleeve 11, the splint 36 is first clamped on the sampling box 30, thereby completely sealing the sampling box 30 to prevent it from opening suddenly, thereby better protecting the safety of the sample in the sampling box 30.

[0025] The lower side of the extrusion plate 233 in this embodiment is arc-shaped. Specifically, the arc-shaped extrusion plate 233 can better contact and apply force to the side wall of the surrounding frame 32. Since the movement centers of the extrusion plate 233 and the surrounding frame 32 do not coincide, the extrusion plate 233 will produce relative movement on the surface of the surrounding frame 32, and the arc-shaped extrusion plate 233 can make the movement process smoother.

[0026] In summary, the sampling device for geological survey of the present embodiment is used to drill a deep hole of appropriate depth in advance using a drill before use, then the drill bit is taken out, the first spring 21 is compressed (the first spring 21 is limited by the limiting device 40 after compression), the sampling box 30 is opened and its opening is facing downward, the surrounding frame 32 of the sampling box 30 is attached to the lower side of the pressure plate, the pull rod 19 is passed through the casing 11 and connected to the connector 35 on the connecting plate 31 (threaded connection), the sampling box 30 is pulled by the pull rod 19 (a pair of surrounding frames 32 on the sampling box 30 are naturally horizontally unfolded under the action of the torsion spring), then the traction rope is fixed to the shell 10, and the shell 10 is slowly sent into the deep hole. When it reaches the bottom of the deep hole, the limiting device 40 releases the first spring 21, and the first spring 21 is released. The spring 21 releases the elastic force and pushes the first slide plate 22, the slide bar 231, the hinge rod 232, and the squeeze plate 233 downward in sequence, and finally pushes the frame 32 to rotate around the rotating shaft 33 and enclose together. At this time, the crushed stone particles in the frame 32 will be enclosed in the sampling box 30 formed by a pair of frames 32 and a connecting plate 31. Finally, the shell 10 can be taken out of the deep hole by the traction rope. The sampling box 30 can be taken out from the top or bottom of the casing 11. After taking it out, since the ore sample is already in the sampling box 30, the sampling box 30 can be directly and quickly taken out for storage and packaging, and a new sampling box 30 can be quickly installed after the sampling box 30 is taken out. After the sampling work of multiple areas is completed, all the sampling boxes 30 can be uniformly transferred and tested. In this way, the sampling efficiency is higher, and there is no need to go through the cumbersome steps of taking the sample out of the shell 10, and the sample will not contact the shell 10, so there will be no mutual contamination between the samples. In addition, the device does not have a drilling rig-like structure, so the structure is simpler and the size is smaller. It can adapt to small-volume drilling, does not require a large power supply, and does not require long power wires, so samples at very deep depths can be collected.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sampling device for geological survey, characterized in that: It comprises a columnar housing (10), a sleeve (11) arranged in the housing (10), a pull rod (19) arranged in the sleeve (11), and a sampling device; the sleeve (11) has a square cross section along the horizontal direction. The sampling device comprises a first spring (21) arranged in the housing (10), a first annular slide plate (22) arranged at the lower end of the first spring (21), a limiting device (40) connected to the first slide plate (22), a pair of first sliding holes (16) opened in the lower end wall of the housing (10), a pair of enclosing devices (23) symmetrically arranged below the first slide plate (22), and a sampling box (30) arranged below the pair of enclosing devices (23); The enclosing device (23) comprises a sliding rod (231) connected to the lower side of the first slide plate (22) and slidably arranged in the first sliding hole (16), a hinge rod (232) hinged to the lower end of the sliding rod (231), an extrusion plate (233) hinged to the lower end of the hinge rod (232), and a fixing plate (234) fixed to the lower end of the shell (10); one side of the extrusion plate (233) is hinged to the fixing plate (234); The sampling box (30) comprises a horizontally arranged connecting plate (31), a pair of surrounding frames (32) respectively arranged on both sides of the connecting plate (31), and a connecting head (35) arranged on the upper side of the connecting plate (31); the surrounding frame (32) is hingedly connected to the connecting plate (31) via a rotating shaft (33), and a torsion spring is arranged on the rotating shaft (33); The lower side of one of the extrusion plates (233) is in contact with the upper side of one of the surrounding frames (32); the upper end of the pull rod (19) is arranged above the shell (10), and the lower end of the pull rod (19) is detachably connected to the connecting head (35).

2. The sampling device for geological survey according to claim 1, characterized in that: It also includes a lifting device (50) for driving the pull rod (19) to move upward; the lifting device (50) includes an annular second slide plate (51) disposed below the first slide plate (22), a first sealing film (52) for connecting the inner ring of the first slide plate (22) and the inner ring of the second slide plate (51), and a second sealing film (53) for connecting the outer ring of the first slide plate (22) and the outer ring of the second slide plate (51); the first slide plate (22), the second slide plate (51), the first sealing film (52), and the second sealing film (53) enclose a sealed cavity (512); The lifting device (50) further comprises a receiving groove (17) provided on the upper side wall of the sleeve (11), an air pressure tube (54) vertically arranged in the receiving groove (17), a push rod (55) sealingly and slidably arranged in the air pressure tube (54), and an air guide tube (56) for connecting the sealing cavity (512) and the air pressure tube (54); The push rod (55) is connected to the pull rod (19), and the lower end of the air pressure tube (54) is a sealed end.

3. The sampling device for geological survey according to claim 2, characterized in that: The lifting device (50) further comprises a second sliding hole (14) provided on the top wall of the shell (10), a first limiting block (57) provided on the upper side wall of the top rod (55), a horizontally arranged top plate (58), insertion holes (59) provided on both ends of the top plate (58), and a second limiting block (510) provided on the side wall of the pull rod (19); The pull rod (19) is arranged to pass through the top plate (58), the lower end of the second slide hole (14) is connected to the accommodating groove (17), the top rod (55) is slidably arranged in the second slide hole (14), the first limit block (57) is arranged above the shell (10), the top rod (55) is passed through the insertion hole (59), the top plate (58) is arranged on the upper side of the first limit block (57), and the second limit block (510) is arranged on the upper side of the top plate (58).

4. The sampling device for geological survey according to claim 2, characterized in that: The lifting device (50) further comprises a second spring (511) arranged between the first slide plate (22) and the second slide plate (51); A ring-shaped third slide plate (24) is connected to the upper ends of a pair of slide bars (231), a gap is provided between the third slide plate (24) and the second slide plate (51), and the third slide plate (24) and the second slide plate (51) are connected via a connecting rope (513).

5. The sampling device for geological survey according to claim 2, characterized in that: The thickness of the sampling box (30) formed by a pair of the surrounding frames (32) and the connecting plate (31) is L, the width of the gap between the pair of fixing plates (234) is L, and the width of the interior of the sleeve (11) is L.

6. The sampling device for geological survey according to claim 1, characterized in that: Through holes (13) are respectively provided on both sides of the housing (10); a pair of the limiting devices (40) are provided, and the pair of limiting devices (40) are respectively provided on both sides of the first slide plate (22); The limiting device (40) comprises an inverted L-shaped pull hook (41) connected to the upper side of the first slide plate (22), a first hanging ring (43) hung on the pull hook (41), a third sliding hole (18) opened in the side wall of the shell (10) in the vertical direction, a pull rope (42) arranged in the third sliding hole (18), and a second hanging ring (44) arranged at the upper end of the pull rope (42); the lower end of the pull rope (42) is connected to the first hanging ring (43), and the pull hook (41) is arranged in the through hole (13).

7. The sampling device for geological survey according to claim 6, characterized in that: The limiting device (40) further comprises an electric telescopic cylinder (46) vertically arranged inside the top end of the shell (10), and a pair of third hanging rings (45) arranged at the top of the shell (10); The telescopic rod of the electric telescopic cylinder (46) is arranged through the housing (10); a pair of the second hanging rings (44) are both hung on the telescopic rod of the electric telescopic cylinder (46), and a pair of the pull ropes (42) are respectively arranged through a pair of the third hanging rings (45).

8. The sampling device for geological survey according to claim 1, characterized in that: The sampling box (30) further comprises a pair of arc-shaped spring sheets (34); the pair of spring sheets (34) are respectively arranged in a pair of the surrounding frames (32); one side of the spring sheet (34) is fixedly connected to a side of the inner wall of the surrounding frame (32) close to the connecting plate (31), and the other side is suspended; after the pair of the surrounding frames (32) are closed, a gap is provided between the side edges of the pair of the surrounding frames (32).

9. The sampling device for geological survey according to claim 5, characterized in that: The inner wall of the sleeve (11) is provided with grooves (15) on two opposite sides of the upper end; It also includes an inverted U-shaped clamping plate (36) and a clearance hole (37) opened on the upper side of the clamping plate (36); the pull rod (19) is arranged through the clearance hole (37), and both sides of the clamping plate (36) are arranged in the clamping groove (15); the width inside the clamping plate (36) is L.

10. The sampling device for geological survey according to claim 1, characterized in that: The lower side surface of the extrusion plate (233) is arc-shaped.

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