Sampling equipment for geological exploration

Abstract

The invention relates to the technical field of drilling sampling, and particularly discloses a sampling device for geological prospecting, the sampling device comprises a drilling machine, the surface of the drilling machine is connected with a driving motor, by combining a drill bit and a sampling rod, after the drill bit reaches a designated position, the rotation direction of the sampling rod can be changed, and an opening and closing plate is opened through centrifugal force; according to the sampling device, soil around the sampling rod is sampled, the sampling device works synchronously with the drill bit, the time required for replacing the sampling rod by the drill bit can be shortened, by arranging the telescopic sleeve, when the sampling rod rotates, the position of the telescopic sleeve can be limited through the insertion rod and the balancing weight, and sample loss caused by sliding of the telescopic sleeve during sampling is prevented; and the balancing weight is in a reset state, a user can directly push the telescopic sleeve to take out a sample, and after the telescopic sleeve is reset under the action of the second spring, drilling sampling can be continuously carried out on other positions, so that the sampling time is greatly saved, and the sampling efficiency is improved.

Description

Technical Field

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

[0002] Geological exploration sampling devices are tools or equipment used to obtain underground rock, soil, mineral or fluid samples. There are many types of sampling devices, which vary according to the exploration target, depth and environment. They mainly include motorized augers, impact samplers and piston samplers. When sampling soil, most existing equipment uses a motorized auger to drill holes in the ground to be sampled. When the drill bit reaches the target area, it needs to be removed and replaced with a sampling tube. The sampling tube is then nailed into the target soil layer using a standard penetration tester. The sampling tube is then removed and split to obtain the sample soil. This method not only requires switching between the drill bit and the sampling tube, but also requires the use of other equipment such as a standard penetration tester. It is inefficient and unsuitable for preliminary geological soil sampling. To this end, we propose a sampling device for geological exploration. Summary of the Invention

[0003] The object of the present invention is to provide a sampling device for geological exploration to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a sampling device for geological exploration, comprising a drill rig, a driving motor connected to the surface of the drill rig, a transmission rod fixedly connected to the output end of the driving motor, and a drill bit provided at the lower end of the transmission rod; The sampling assembly includes a sampling rod, the upper end of the sampling rod is fixedly connected to the transmission rod, and the lower end is fixedly connected to the drill bit. The sampling rod is provided with a sampling cavity inside. The sampling cavity is divided into two groups, one group is close to the transmission rod, and the other group is close to the drill bit. The outer surface of the sampling rod and the sampling cavity are both provided with opening and closing grooves at positions corresponding to the sampling cavities. An opening and closing plate is rotated inside the opening and closing grooves. The centrifugal assembly includes a centrifugal chamber, and a centrifugal plate is slidably connected to the inside of the centrifugal chamber. When the centrifugal plate is subjected to centrifugal force, the opening and closing plate is forced to open, thereby resisting the insertion of the soil sample into the sampling chamber.

[0005] In which, the centrifugal chamber is designed as a rectangular structure, a baffle is fixedly connected to the middle position of the centrifugal chamber, the centrifugal plate is in contact with the baffle, an adjustment chamber is provided at the upper end of the inner surface of the centrifugal chamber, a connecting rod is sliding inside the adjusting chamber, one end of the connecting rod is rotatably connected to the end of the centrifugal plate, a telescopic groove is provided through the inner surface of the adjusting chamber, a telescopic plate rotatably connected to the connecting rod is slidably connected inside the telescopic groove, a rotary slider is fixedly connected to the surface of the telescopic plate, one end of the opening and closing plate is fixedly connected to a rotating rod, a rotary groove matching the rotary slider is provided on the surface of the rotating rod, and the rotating rod is located inside the sampling chamber and rotatably connected thereto.

[0006] Wherein, the baffle is made of a magnet, the centrifugal plate is magnetically adsorbed thereon, and a spring is fixedly connected between the centrifugal plate and the centrifugal chamber.

[0007] A guide rod is fixedly connected to the inside of the centrifugal chamber, a notch is provided on the annular outer surface of the guide rod, and guide grooves are provided at corresponding positions of the centrifugal plate and the guide rod.

[0008] The opening and closing plate is designed to be arc-shaped, the inner side of one end of the opening and closing plate away from the rotating rod is designed to be an inclined structure, and the arc length of the opening and closing groove is greater than the arc length of the opening and closing plate.

[0009] Among them, the annular outer surface of the sampling rod is provided with a telescopic sleeve, the telescopic groove covers the sampling cavity, the inner surface of the telescopic sleeve is fixedly connected with a sliding block, the sampling rod and the sliding block are provided with sliding grooves at corresponding positions, the sliding block is located inside the sliding groove, and a spring 2 is fixedly connected between the sliding block and the sliding groove.

[0010] Among them, a counterweight block is also provided inside the centrifugal chamber, a through groove is provided on the surface of the centrifugal plate, the counterweight block is located inside the through groove, a spring three is fixedly connected between the side of the counterweight block away from the baffle and the centrifugal chamber, a plug rod is fixedly connected to the surface of the counterweight block, a slot is provided at the corresponding position of the sliding groove and the plug rod, the plug rod is located inside the slot, and an anti-slip layer is coated on the inner surface of the telescopic sleeve and the corresponding position of the plug rod.

[0011] The thickness of the counterweight block is greater than the thickness of the centrifugal plate, and a blocking block is fixedly connected to the annular outer surface of the sampling rod, and the blocking block is aligned with the opening and closing slot.

[0012] The insertion rod is designed as an L-shaped structure, and the end of the insertion rod away from the counterweight block contacts the end of the sliding groove. The outer surface of the insertion rod corresponding to the telescopic sleeve is also coated with an anti-slip layer.

[0013] The present invention has at least the following beneficial effects: By combining the drill bit and the sampling rod, the rotation direction of the sampling rod can be changed after the drill bit reaches the specified position, and the opening and closing plate can be opened by centrifugal force to sample the soil around the sampling rod. The drill bit works synchronously, which can reduce the time required for the drill bit to replace the sampling rod and greatly improve the sampling efficiency. By setting up two sets of sampling chambers, two places can be sampled at the same time, improving the accuracy of analyzing the sample components. The mutual cooperation of the above structures can ensure sampling while reducing the time required for sampling, which is suitable for preliminary sampling of geological soil. By setting up the telescopic sleeve, when the sampling rod rotates, the position of the telescopic sleeve will be limited by the insertion rod and the counterweight block to prevent the telescopic sleeve from sliding during sampling and causing sample loss. When the sampling rod is in a stationary state, the counterweight block is in a reset state, and the user can directly push the telescopic sleeve to take out the sample. When the telescopic sleeve is reset under the action of spring 2, drilling and sampling can continue at other positions, which greatly saves sampling time and improves sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the sampling rod and drill bit of the present invention; Figure 3 This is a schematic diagram of the cross-section structure of the sampling rod of the present invention; Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle; Figure 6 It is a structural schematic diagram of the opening and closing plate and the rotating rod of the present invention; Figure 7 This is a schematic diagram of the explosion effect of the internal structure of the sampling rod of the present invention; Figure 8 It is a structural schematic diagram of the opening and closing plate and the opening and closing groove of the present invention; Figure 9 This is a schematic structural diagram of the sampling chamber and telescopic sleeve of the present invention.

[0015] In the figure: 1. Drilling rig; 10. Transmission rod; 11. Drill bit; 20. Sampling rod; 21. Sampling chamber; 22. Baffle; 23. Spring 1; 24. Guide rod; 241. Notch; 25. Centrifugal chamber; 26. Blocking ring; 27. Centrifugal plate; 271. Guide groove; 28. Adjusting chamber; 29. Connecting rod; 30. Telescopic groove; 31. Telescopic plate; 32. Rotating rod; 33. Rotary slide groove; 34. Opening and closing plate; 35. Telescopic sleeve; 351. Reserved groove; 352. Blocking block; 36. Sliding groove; 37. Sliding block; 38. Spring 2; 39. Opening and closing groove; 41. Through groove; 42. Counterweight; 43. Insert rod; 44. Rotary slide block; 45. Spring 3; 46. Slot. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-9 The present invention provides a technical solution: a sampling device for geological exploration, comprising a drill rig 1, a driving motor connected to the surface of the drill rig 1, a transmission rod 10 fixedly connected to the output end of the driving motor, the transmission rod 10 can be connected end to end to increase, and a drill bit 11 is provided at the lower end of the transmission rod 10; The sampling assembly includes a sampling rod 20, the upper end of which is fixedly connected to the transmission rod 10, and the lower end is fixedly connected to the drill bit 11. A sampling cavity 21 is provided inside the sampling rod 20. The sampling cavity 21 is divided into two groups, one group is close to the transmission rod 10, and the other group is close to the drill bit 11. The two groups of sampling cavities 21 can simultaneously perform sampling at two locations. An opening and closing groove 39 is provided on the outer surface of the sampling rod 20 at positions corresponding to the sampling cavity 21. An opening and closing plate 34 is rotated inside the opening and closing groove 39. The sampling cavity 21 extends upward along the sampling rod 20 and communicates with the opening and closing groove 39. The sampling rod 20 is directly combined with the drill bit 11 to achieve sampling while drilling without replacing the equipment, which can improve the sampling speed. The centrifugal assembly includes a centrifugal chamber 25, and a centrifugal plate 27 is slidably connected to the inside of the centrifugal chamber 25. When the centrifugal plate 27 is subjected to centrifugal force, it forces the opening and closing plate 34 to open, thereby inserting the soil sample to be taken into the sampling chamber 21. The opening of the opening and closing plate 34 is controlled by the centrifugal force, so that the opening of the opening and closing plate 34 is in a controllable state, and sampling is controlled according to demand.

[0018] See also Figure 3 、 46. The centrifugal chamber 25 is designed as a rectangular structure. A baffle 22 is fixedly connected to the middle position of the centrifugal chamber 25. The centrifugal plate 27 is in contact with the baffle 22. Adjustment chambers 28 are provided at both upper and lower ends of the inner surface of the centrifugal chamber 25. A connecting rod 29 is slidably provided inside the adjusting chamber 28. One end of the connecting rod 29 is rotatably connected to the end of the centrifugal plate 27. A telescopic groove 30 is provided through the inner surface of the adjusting chamber 28. A telescopic plate 31 rotatably connected to the connecting rod 29 is slidably connected inside the telescopic groove 30. A rotary slider 44 is fixedly connected to the surface of the telescopic plate 31. One end of the opening and closing plate 34 is fixedly connected to a rotating rod 32. A rotary groove 33 matching the rotary slider 44 is provided on the surface of the rotating rod 32. The rotating rod 32 is located inside the sampling chamber 21 and is rotatably connected thereto. When the drill bit 11 drills to a suitable position, the drill bit 11 can be rotated in the opposite direction through centrifugal force. The centrifugal plate 27 is controlled to move away from the baffle 22. At this time, the centrifugal plate 27 pushes the connecting rod 29, forcing the telescopic plate 31 to move upward along the telescopic slot 30. The sliding block 44 on the surface of the telescopic plate 31 moves upward. Since the sliding block 44 is located inside the sliding slot 33, the upward movement of the telescopic plate 31 forces the rotating rod 32 to rotate. The telescopic plate 31 is designed as an arc structure, which cooperates with the rotating rod 32. The rotating rod 32 is fixed to the opening and closing plate 34. The opening and closing plate 34 is opened, and the opening and closing plate 34 rotates to shovel the soil around the sampling rod 20 into the sampling cavity 21. After the sampling is completed, the speed of the sampling rod 20 decreases, the centrifugal force on the centrifugal plate 27 is reduced, and the centrifugal plate 27 drives the opening and closing plate 34 to return to its original position through the connecting rod 29. Through the cooperation of the above structure, the sampling rod 20 is synchronized with the drill bit 11, and the soil at the drilling site can be directly sampled without replacing the drill bit 11 and the sampling rod 20, which greatly improves the sampling efficiency.

[0019] See also Figure 3 、 6 7. The baffle 22 is made of a magnet, and the centrifugal plate 27 is magnetically attracted to it to ensure that there is sufficient magnetic force to restrain the centrifugal force. A spring 23 is fixedly connected between the centrifugal plate 27 and the centrifugal chamber 25. The centrifugal plate 27 can only move when the centrifugal force exerted on it by the centrifugal force is greater than the magnetic force of the baffle 22 and the elastic force generated by the spring 23. The spring 23 can also be used to reset the centrifugal plate 27.

[0020] See also Figure 3 、 6 7. A guide rod 24 is fixedly connected to the inside of the centrifugal chamber 25. A notch 241 is provided on the annular outer surface of the guide rod 24. Guide grooves 271 are provided at positions corresponding to the centrifugal plate 27 and the guide rod 24 to increase the stability of the centrifugal plate 27 during movement. At the same time, the notch 241 is provided for air circulation to prevent the centrifugal plate 27 from being obstructed by air flow.

[0021] See also Figure 7 、 8The opening and closing plate 34 is designed to be arc-shaped, and the inner side of the end of the opening and closing plate 34 away from the rotating rod 32 is designed to be inclined, which is convenient for subsequent sampling. The arc length of the opening and closing groove 39 is greater than the arc length of the opening and closing plate 34 to prevent the opening and closing plate 34 from being restricted by the length of the opening and closing groove 39 after opening, and thus being unable to open. The arc length of the opening and closing groove 39 is controlled to be slightly longer than the opening and closing plate 34 to avoid excessive opening of the opening and closing plate 34 and improve structural stability.

[0022] See also Figure 6 、 7 The annular outer surface of the sampling rod 20 is provided with a telescopic sleeve 35, and the telescopic groove 30 covers the sampling cavity 21. When the sample is located inside the sampling cavity, it will contact the telescopic sleeve 35. The telescopic sleeve 35 prevents the sample from leaving the sampling cavity 21 under the action of centrifugal force. The inner surface of the telescopic sleeve 35 is fixedly connected with a sliding block 37, and a sliding groove 36 is provided at the corresponding position of the sampling rod 20 and the sliding block 37 to limit the movement of the telescopic sleeve 35, prevent it from rotating, and increase stability. The sliding block 37 is located inside the sliding groove 36, and a spring 2 38 is fixedly connected between the sliding block 37 and the sliding groove 36. When the user needs to take out the sample, he directly pushes the telescopic sleeve 35. At this time, the sample inside the sampling cavity 21 can be taken out, and the spring 2 38 facilitates the resetting of the telescopic sleeve 35. The design of the above structure makes it easy for the user to take out the sample.

[0023] See also Figure 3 、 5 7. A counterweight 42 is further provided inside the centrifugal chamber 25. A through groove 41 is provided on the surface of the centrifugal plate 27. The counterweight 42 is located inside the through groove 41. A spring 3 45 is fixedly connected between the side of the counterweight 42 away from the baffle 22 and the centrifugal chamber 25. The spring 3 45 is used for the automatic reset of the counterweight 42. A plug 43 is fixedly connected to the surface of the counterweight 42. A slot 46 is provided at the corresponding position of the sliding groove 36 and the plug 43. The plug 43 is located Inside the slot 46, the inner surface of the telescopic sleeve 35 and the corresponding position of the insertion rod 43 are coated with an anti-slip layer. By setting the counterweight block 42, the counterweight block 42 cannot be magnetized and does not have the ability to be attracted to the baffle 22. When the sampling rod 20 rotates, the counterweight block 42 is directly thrown out under the action of centrifugal force, and the insertion rod 43 is used to resist the inner surface of the telescopic sleeve 35 along the slot 46 to fix the position of the telescopic sleeve 35, thereby preventing the telescopic sleeve 35 from sliding when the drill bit 11 drills downward.

[0024] See also Figure 6 、 7The thickness of the counterweight 42 is greater than that of the centrifugal plate 27, and it can also play a role in limiting. The four corners of the counterweight 42 are chamfered to reduce the contact surface with the through groove 41, reduce friction, and improve the response speed of the counterweight 42. The annular outer surface of the sampling rod 20 is fixedly connected with a blocking block 352 to further block the telescopic sleeve 35. When the telescopic sleeve 35 is reset by the spring 2 38, it plays a role in limiting. The blocking block 352 is aligned with the opening and closing slot 39 to prevent the telescopic sleeve 35 from blocking the rotation of the opening and closing plate 34.

[0025] See also Figure 5 The insert rod 43 is designed as an L-shaped structure, and the end of the insert rod 43 away from the counterweight block 42 contacts the end of the sliding groove 36. The outer surfaces of the insert rod 43 corresponding to the telescopic sleeve 35 are also coated with an anti-slip layer. The provision of the anti-slip layer can increase the friction between the insert rod 43 and the telescopic sleeve 35, thereby improving the fixing effect. At the same time, the anti-slip layer can be provided with teeth, which restrict the telescopic sleeve 35 by staggering the teeth. The sampling cavity 21 is divided into two groups, and the telescopic sleeve 35 is also divided into two groups. A reserved groove 351 is provided on the surface of a group of telescopic sleeves 35 near the drill bit 11 to prevent obstruction of the opening of the opening and closing plate 34. The annular outer surface of the sampling rod 20 is fixedly connected to a blocking ring 26 for preventing the telescopic sleeve 35 near the drill bit 11 from sliding excessively. The telescopic sleeve 35 near the transmission rod 10 moves downward to open the sampling cavity 21, and the telescopic sleeve 35 near the drill bit 11 moves upward to open the sampling cavity 21.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for geological exploration, comprising a drill (1), wherein a driving motor is connected to the surface of the drill (1), an output end of the driving motor is fixedly connected to a transmission rod (10), and a drill bit (11) is provided at the lower end of the transmission rod (10), characterized in that: A sampling assembly, the sampling assembly comprising a sampling rod (20), the upper end of the sampling rod (20) being fixedly connected to the transmission rod (10), and the lower end being fixedly connected to the drill bit (11), a sampling cavity (21) being provided inside the sampling rod (20), the sampling cavity (21) being provided in two groups, one group being close to the transmission rod (10), and the other group being close to the drill bit (11), an opening and closing groove (39) being provided at positions corresponding to the outer surface of the sampling rod (20) and the sampling cavity (21), an opening and closing plate (34) being rotatable inside the opening and closing groove (39); A centrifugal assembly comprises a centrifugal chamber (25), wherein a centrifugal plate (27) is slidably connected to the interior of the centrifugal chamber (25), and when subjected to centrifugal force, the centrifugal plate (27) forces the opening and closing plate (34) to open, thereby inserting the resisting soil sample into the interior of the sampling chamber (21).

2. The sampling device for geological exploration according to claim 1, characterized in that: The centrifugal chamber (25) is designed as a rectangular structure. A baffle (22) is fixedly connected to the middle position of the centrifugal chamber (25). The centrifugal plate (27) contacts the baffle (22). An adjustment chamber (28) is provided at the upper end of the inner surface of the centrifugal chamber (25). A connecting rod (29) slides inside the adjustment chamber (28). One end of the connecting rod (29) is rotatably connected to the end of the centrifugal plate (27). A telescopic groove (30) is provided through the inner surface of the adjustment chamber (28). A telescopic plate (31) rotatably connected to the connecting rod (29) is slidably connected inside the telescopic groove (30). A rotary slider (44) is fixedly connected to the surface of the telescopic plate (31). One end of the opening and closing plate (34) is fixedly connected to a rotating rod (32). A rotary slider (33) matching the rotary slider (44) is provided on the surface of the rotating rod (32). The rotating rod (32) is located inside the sampling chamber (21) and is rotatably connected thereto.

3. The sampling device for geological prospecting according to claim 2, characterized in that: The baffle (22) is made of a magnet, and the centrifugal plate (27) is magnetically attracted to the baffle. A spring 1 (23) is fixedly connected between the centrifugal plate (27) and the centrifugal chamber (25).

4. The sampling device for geological exploration according to claim 3, characterized in that: A guide rod (24) is fixedly connected to the interior of the centrifugal chamber (25), a notch (241) is provided on the annular outer surface of the guide rod (24), and a guide groove (271) is provided at positions corresponding to the centrifugal plate (27) and the guide rod (24).

5. The sampling device for geological exploration according to claim 2, characterized in that: The opening and closing plate (34) is designed to be arc-shaped, and the inner side of one end of the opening and closing plate (34) away from the rotating rod (32) is designed to be an inclined structure, and the arc length of the opening and closing groove (39) is greater than the arc length of the opening and closing plate (34).

6. The sampling device for geological prospecting according to claim 2, characterized in that: The annular outer surface of the sampling rod (20) is provided with a telescopic sleeve (35), the telescopic groove (30) covers the sampling cavity (21), the inner surface of the telescopic sleeve (35) is fixedly connected with a sliding block (37), and a sliding groove (36) is provided at a corresponding position between the sampling rod (20) and the sliding block (37), the sliding block (37) is located inside the sliding groove (36), and a spring 2 (38) is fixedly connected between the sliding block (37) and the sliding groove (36).

7. The sampling device for geological prospecting according to claim 6, characterized in that: A counterweight (42) is further provided inside the centrifugal chamber (25), a through groove (41) is provided on the surface of the centrifugal plate (27), the counterweight (42) is located inside the through groove (41), a spring three (45) is fixedly connected between the side of the counterweight (42) away from the baffle (22) and the centrifugal chamber (25), an insertion rod (43) is fixedly connected to the surface of the counterweight (42), a slot (46) is provided at a position corresponding to the sliding groove (36) and the insertion rod (43), the insertion rod (43) is located inside the slot (46), and an anti-slip layer is coated on the inner surface of the telescopic sleeve (35) at a position corresponding to the insertion rod (43).

8. The sampling device for geological prospecting according to claim 7, characterized in that: The thickness of the counterweight block (42) is greater than the thickness of the centrifugal plate (27), and a blocking block (352) is fixedly connected to the annular outer surface of the sampling rod (20), and the blocking block (352) is aligned with the opening and closing groove (39).

9. The sampling device for geological prospecting according to claim 7, characterized in that: The insertion rod (43) is designed as an L-shaped structure, and one end of the insertion rod (43) away from the counterweight (42) contacts the end of the sliding groove (36), and the outer surfaces of the insertion rod (43) and the telescopic sleeve (35) corresponding to each other are also coated with an anti-slip layer.

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