Drilling machine positioning device for geology and geophysical prospecting

Abstract

The utility model relates to the technical field of geology and geophysical prospecting, and discloses a drilling machine positioning device for geology and geophysical prospecting, which comprises a bottom frame, the bottom surface of the bottom frame is fixedly connected with four storage shells, the bottom of each storage shell is provided with a universal wheel, each storage shell is fixedly connected with a storage unit through the top of the universal wheel, and the storage units are connected with the bottom surface of the bottom frame. An adjusting shell is fixedly connected to the inner wall of the bottom frame, a positioning unit is arranged in the adjusting shell, a stepping motor, a threaded rod, a threaded swing shell, an arc-shaped sliding rail frame and a sliding block are matched with the stepping motor to drive the threaded rod to rotate, so that the threaded rod spirally rotates in the threaded swing shell, the sliding block slides in the arc-shaped sliding rail frame, and the positioning unit is arranged in the adjusting shell. The inclination angle of the threaded rod and the drill bit can be adjusted, the threaded rod with the adjusted angle and the bottom drill bit can be positioned in cooperation with the positioning unit, and the problem that due to the fact that only vertical drilling can be conducted, obtained geological data cannot comprehensively and accurately reflect the actual geological structure is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological geophysical prospecting technical field more specifically, it relates to geological geophysical prospecting with rig positioning device. BACKGROUND

[0002] Geological geophysical prospecting refers to a series of technical methods for detecting underground geological structure, looking for mineral resources and evaluating engineering geological conditions by studying and observing the change of various geophysical fields, in the geological geophysical prospecting work, often need to use the rig to carry out opening operation to obtain underground core sample, detect stratum structure etc.

[0003] The utility model with publication number CN213807582U discloses a geological geophysical prospecting rig positioning device, the device adopts the first fixed structure, installs the base on the detection ground, preliminarily fixes the base through the fixed column, installs the threaded rod on the fixed column and goes into the ground, the fixed effect of the fixed column to the base is reinforced, so that the rig on the base keeps stable state when working, at the same time, the second fixed structure is arranged, the drill rod is installed in the limiting barrel, the bottom of the drill rod passes through the limiting hole on the limiting plate, when the drill rod moves downward to detect geology under the action of the driving chain, the limiting hole limits the drill rod, prevents the drill rod from deviating when detecting the hard rock layer, ensures the accuracy of the detection site, and further improves the accuracy of the detection data, however, the above technical scheme has obvious limitations, in the actual geological geophysical prospecting work, the terrain condition is complex and various, the device can only control the drill bit to drill vertically downward, when encountering special terrain such as inclined terrain and slope, the inclination angle of the drill bit cannot be changed, for example, in the mountainous area geological geophysical prospecting, the mountain slope terrain generally exists, if only vertical drilling, on the one hand, the geological data obtained can not comprehensively and accurately reflect the actual geological structure, greatly reduces the accuracy and reliability of the geological geophysical prospecting data, and affects the scientific judgment of the underground geological condition, on the other hand, in order to meet the detection needs in different directions, the rig position has to be adjusted repeatedly or the drilling site has to be selected again, which not only consumes a lot of time and human and material resources, but also increases the exploration cost. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a geological geophysical prospecting rig positioning device, which aims at solving the problems in the above background technology.

[0006] (II) technical scheme

[0007] To achieve the above objectives, this application provides the following technical solution: a positioning device for a geological geophysical drilling rig, comprising a base frame, four storage shells fixedly connected to the bottom surface of the base frame, each storage shell having a caster wheel at its bottom, and a storage unit fixedly connected to the top of each storage shell via the caster wheel; an adjustment shell fixedly connected to the inner wall of the base frame, a positioning unit being provided inside the adjustment shell; a stepper motor positioned above the base frame, an adjustment mechanism fixedly connected to the output end of the stepper motor; and an auxiliary lifting unit fixedly connected to the top of the base frame via the stepper motor.

[0008] The present invention is further configured such that the storage unit includes a first hydraulic cylinder fixed to the top wall inside each storage shell, the telescopic end of each first hydraulic cylinder is fixedly connected to a telescopic shell, the outer surface of each telescopic shell is slidably connected to the inside of the storage shell, the bottom surface of each telescopic shell is fixedly connected to the upper surface of the universal wheel, and a PLC controller is fixedly connected to the upper surface of the base frame, and the PLC controller is electrically connected to the first hydraulic cylinder through a wire.

[0009] The present invention is further configured such that the adjusting mechanism includes a threaded swing shell located inside the adjusting shell, a threaded rod is threadedly connected to the inner wall of the threaded swing shell, the top end of the threaded rod is fixedly connected to the output end of the stepper motor, an arc-shaped slide rail frame is provided above the base frame, a sliding block is slidably connected inside the arc-shaped slide rail frame, the top end of the stepper motor is fixedly connected to the bottom surface of the sliding block, four arc-shaped sliding grooves are opened on the inner wall of the adjusting shell, and four sliding plates are fixedly connected to the outer surface of the threaded swing shell, the outer surface of each sliding plate is slidably connected to the inside of the arc-shaped sliding groove.

[0010] The present invention is further configured such that a metal auxiliary plate is fixedly connected to the inner wall of the adjusting shell, the outer surface of the metal auxiliary plate is in contact with the outer surface of the threaded swing shell, an angle sensor is fixedly connected to the front of the threaded swing shell, an angle scale plate is provided on the left side of the threaded swing shell, and an indicator scale needle is fixedly connected to the inner wall of the threaded swing shell.

[0011] The present invention is further configured such that the positioning unit includes a second hydraulic cylinder fixedly connected to the inner wall of the adjusting shell, a push plate fixedly connected to the telescopic end of the second hydraulic cylinder, two stabilizing grooves are opened on the inner wall of the adjusting shell, a stabilizing block is slidably connected inside each stabilizing groove, the sides of the two stabilizing blocks that are close to each other are fixedly connected to the front and back of the push plate respectively, the right side of the push plate is in contact with the left side of the threaded swing shell, the upper surface of the push plate is fixedly connected to the bottom surface of the angle scale plate, an electric telescopic rod is fixedly connected to the inner wall of the base frame, a positioning rod is fixedly connected to the telescopic end of the electric telescopic rod, multiple positioning grooves are opened on the right side of the threaded swing shell, the left end of the positioning rod passes through the adjusting shell and the metal auxiliary plate in sequence and extends into the interior of the positioning groove, and the PLC controller is electrically connected to the stepper motor, the angle sensor, the second hydraulic cylinder and the electric telescopic rod respectively through wires.

[0012] The present invention is further configured such that the auxiliary lifting unit includes four auxiliary shells fixedly connected to the upper surface of the base frame, two bearings fixedly connected to the inner wall of each auxiliary shell, a spiral rod fixedly connected to the inner ring of each pair of bearings, a threaded movable shell threadedly connected to the outer surface of each spiral rod, and the outer surface of each threaded movable shell slidingly connected to the interior of the auxiliary shell. Four displacement blocks are fixedly connected to the outer surface of the arc-shaped slide rail frame, a correction shell is provided on the outer side of each displacement block, the interior of each correction shell slidingly connected to the outer surface of the displacement block, one end of each correction shell fixedly connected to the outer surface of the threaded movable shell, and eight return springs fixedly connected to the inner wall of each correction shell, one end of each return spring fixedly connected to the outer surface of the displacement block.

[0013] The present invention is further configured such that two balancing grooves are formed on the outer surface of each auxiliary shell, a balancing frame is fixedly connected to the outer surface of each correction shell, and the outer surface of each balancing frame is slidably connected to the interior of the two balancing grooves.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. A stepper motor, threaded rod, threaded swing housing, arc-shaped slide rail frame, and sliding block work together to drive the threaded rod to rotate. The threaded rod is threadedly connected to the threaded swing housing, causing the threaded rod to rotate spirally within the shell. Meanwhile, the sliding block slides within the arc-shaped slide rail frame, allowing adjustment of the tilt angle of the threaded rod and the drill bit. With the help of a positioning unit, the adjusted threaded rod and the bottom drill bit can be positioned, and the tilt angle of the threaded rod and the bottom drill bit can be changed. With the help of an angle sensor, an angle scale plate, and an indicator needle, the operator can intuitively understand the adjusted angle, facilitating drilling operations on terrain with a certain slope and avoiding the problem that the geological data obtained cannot fully and accurately reflect the actual geological structure due to the limitation of vertical drilling.

[0017] 2. Through the second hydraulic cylinder, push plate, stabilizing block, electric telescopic rod, and positioning rod, after the threaded rod and drill bit angle are adjusted, the second hydraulic cylinder pushes the push plate. The stabilizing block slides in the stabilizing groove to ensure the push plate moves smoothly. The push plate abuts against the threaded swing shell. Then, the electric telescopic rod extends, and the positioning rod inserts into the positioning groove of the threaded swing shell to fix the adjusted angle. This ensures that the drilling rig's angle is stable during operation, avoiding the impact of angle changes on the detection results during exploration. At the same time, the auxiliary lifting unit's helical rod, threaded moving shell, correction shell, and return spring can assist in lifting the drilling rig and play a corrective and buffering role during the lifting process, ensuring smooth lifting of the drilling rig and avoiding the impact of drilling instability on the detection accuracy, thereby improving the overall efficiency and quality of geological geophysical exploration work. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the electric telescopic pole of this utility model;

[0020] Figure 3 This is a three-dimensional sectional view of the storage shell of this utility model;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the auxiliary shell of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the electric telescopic pole of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the arc-shaped slide rail frame of this utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the threaded swing shell of this utility model;

[0025] Figure 8 This is a three-dimensional structural diagram of the positioning groove of this utility model;

[0026] Figure 9 This is a three-dimensional structural diagram of the stabilizing groove of this utility model;

[0027] Figure 10 This is a three-dimensional structural diagram of the arc-shaped slide groove of this utility model;

[0028] Figure 11 This is a three-dimensional structural diagram of the push plate of this utility model.

[0029] In the diagram: 1. Base frame; 2. Storage shell; 3. Threaded rod; 4. Balancing groove; 5. Return spring; 6. Correction shell; 7. Arc-shaped slide rail frame; 8. Stepper motor; 9. Balancing frame; 10. Auxiliary shell; 11. PLC controller; 12. Caster wheel; 13. Adjustment shell; 14. Threaded swing shell; 15. Angle sensor; 16. Positioning rod; 17. Electric telescopic rod; 18. First hydraulic cylinder; 19. Telescopic shell; 20. Helical rod; 21. Bearing; 22. Displacement block; 23. Threaded moving shell; 24. Stabilizing block; 25. Sliding block; 26. Push plate; 27. Angle scale plate; 28. Indicating scale needle; 29. ​​Metal auxiliary plate; 30. Second hydraulic cylinder; 31. Stabilizing groove; 32. Arc-shaped slide rail; 33. Positioning groove; 34. Sliding plate. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] Please see Figures 1-11The system includes a base frame 1, four storage shells 2 are fixedly connected to the bottom of the base frame 1, each storage shell 2 is equipped with a universal wheel 12 at its bottom, and each storage shell 2 is fixedly connected to a storage unit at the top of the universal wheel 12. An adjustment shell 13 is fixedly connected to the inner wall of the base frame 1, and a positioning unit is provided inside the adjustment shell 13. A stepper motor 8 is provided on the top of the base frame 1, and an adjustment mechanism is fixedly connected to the output end of the stepper motor 8. An auxiliary lifting unit is fixedly connected to the top of the base frame 1 through the stepper motor 8.

[0034] Specifically, the base frame 1 serves as the basic support structure for the entire device. The storage unit, consisting of the storage shell 2 and the casters 12 on its bottom surface, facilitates the movement of the device. The adjustment shell 13 provides space for adjustment and positioning. The stepper motor 8 serves as the power source, connecting the adjustment mechanism and the auxiliary lifting unit for angle adjustment and lifting operations.

[0035] Please see Figures 1-11 The storage unit includes a first hydraulic cylinder 18 fixed to the top wall inside each storage shell 2. Each first hydraulic cylinder 18 has a telescopic shell 19 fixedly connected to its telescopic end. The outer surface of each telescopic shell 19 is slidably connected to the inside of the storage shell 2. The bottom surface of each telescopic shell 19 is fixedly connected to the upper surface of the caster wheel 12. A PLC controller 11 is fixedly connected to the upper surface of the base frame 1. The PLC controller 11 is electrically connected to the first hydraulic cylinder 18 through wires.

[0036] Specifically, when the device needs to be moved, the PLC controller 11 controls the first hydraulic cylinder 18 to start. The telescopic end of the first hydraulic cylinder 18 drives the telescopic shell 19 to slide up and down inside the storage shell 2. The telescopic shell 19 is connected to the caster wheel 12, thereby realizing the lifting and lowering of the caster wheel 12. When the caster wheel 12 descends to contact the ground and supports the base frame 1, the device can be moved. After reaching the designated position, the reverse operation is performed to raise the caster wheel 12 and fix the base frame 1 to the ground, realizing convenient transportation and positioning of the device and solving the problem of inconvenient movement of the device between different work locations.

[0037] Please see Figures 1-11The adjustment mechanism includes a threaded swing housing 14 located inside the adjustment housing 13. A threaded rod 3 is threadedly connected to the inner wall of the threaded swing housing 14. The top end of the threaded rod 3 is fixedly connected to the output end of the stepper motor 8. An arc-shaped slide rail frame 7 is provided above the base frame 1. A sliding block 25 is slidably connected inside the arc-shaped slide rail frame 7. The top end of the stepper motor 8 is fixedly connected to the bottom surface of the sliding block 25. Four arc-shaped slide grooves 32 are provided on the inner wall of the adjustment housing 13. Four sliding plates 34 are fixedly connected to the outer surface of the threaded swing housing 14. The outer surface of each sliding plate 34 is slidably connected to the inside of the arc-shaped slide groove 32. A metal auxiliary plate 29 is fixedly connected to the inner wall of the adjustment housing 13. The outer surface of the metal auxiliary plate 29 is in contact with the outer surface of the threaded swing housing 14. An angle sensor 15 is fixedly connected to the front of the threaded swing housing 14. An angle scale plate 27 is provided on the left side of the threaded swing housing 14. An indicator scale needle 28 is fixedly connected to the inner wall of the threaded swing housing 14.

[0038] Specifically, when drilling is required, the threaded swing housing 14 can be directly pushed to change the tilt angle of the threaded rod 3 and the bottom connected drill bit. During the adjustment process, the threaded swing housing 14 slides inside the arc-shaped groove 32 through the sliding plate 34 to ensure stability. When the appropriate angle is reached, the position of the threaded swing housing 14 is directly positioned by the positioning unit. At this time, the stepper motor 8 drives the threaded rod 3 to rotate downward spirally inside the threaded swing housing 14, and then the bottom drill bit is used for drilling and surveying. During this process, the angle sensor 15 monitors the angle change in real time and transmits the data to the PLC controller 11. The operator can intuitively obtain the current angle information by observing the angle scale plate 27 and the indicator scale needle 28, and then accurately adjust the tilt angle of the drill bit to meet the drilling needs of different terrains and overcome the limitation of traditional devices that cannot adjust the drill bit angle in special terrains.

[0039] Please see Figures 1-11 The positioning unit includes a second hydraulic cylinder 30 fixedly connected to the inner wall of the adjusting shell 13. A push plate 26 is fixedly connected to the telescopic end of the second hydraulic cylinder 30. Two stabilizing grooves 31 are opened on the inner wall of the adjusting shell 13. A stabilizing block 24 is slidably connected inside each stabilizing groove 31. The sides of the two stabilizing blocks 24 that are close to each other are fixedly connected to the front and back sides of the push plate 26, respectively. The right side of the push plate 26 is in contact with the left side of the threaded swing shell 14. The upper surface of the push plate 26 is fixedly connected to the bottom surface of the angle scale plate 27. An electric telescopic rod 17 is fixedly connected to the inner wall of the base frame 1. A positioning rod 16 is fixedly connected to the telescopic end of the electric telescopic rod 17. Multiple positioning grooves 33 are opened on the right side of the threaded swing shell 14. The left end of the positioning rod 16 passes through the adjusting shell 13 and the metal auxiliary plate 29 in sequence and extends into the interior of the positioning groove 33. The PLC controller 11 is electrically connected to the stepper motor 8, the angle sensor 15, the second hydraulic cylinder 30 and the electric telescopic rod 17 through wires.

[0040] Specifically, after the adjustment mechanism adjusts the drill bit angle to the appropriate position, the PLC controller 11 controls the second hydraulic cylinder 30 to start. The telescopic end of the second hydraulic cylinder 30 pushes the push plate 26 to move, and the stabilizing block 24 slides in the stabilizing groove 31 to ensure that the push plate 26 smoothly abuts against the threaded swing shell 14, achieving initial fixation. Subsequently, the PLC controller 11 controls the electric telescopic rod 17 to extend. The electric telescopic rod 17 drives the positioning rod 16 to pass through the adjustment shell 13 and the metal auxiliary plate 29 in sequence, and accurately inserts it into the positioning groove 33 on the right side of the threaded swing shell 14, further firmly locking the position of the threaded swing shell 14, ensuring that the drilling rig's angle is stable during drilling, avoiding the impact of angle changes on drilling accuracy, and ensuring the accuracy of geological geophysical data.

[0041] Please see Figures 1-11 The auxiliary lifting unit includes four auxiliary shells 10 fixedly connected to the upper surface of the base frame 1. Each auxiliary shell 10 has two bearings 21 fixedly connected to its inner wall. The inner rings of each pair of bearings 21 are fixedly connected to a screw rod 20. The outer surface of each screw rod 20 is threadedly connected to a threaded moving shell 23. The outer surface of each threaded moving shell 23 is slidably connected to the interior of the auxiliary shell 10. The outer surface of the arc-shaped slide rail frame 7 is fixedly connected to four displacement blocks 22. Each displacement block 22 has a correction shell 6 on its outer side. The interior of each correction shell 6 is slidably connected to the outer surface of the displacement block 22. One end of each correction shell 6 is fixedly connected to the outer surface of the threaded moving shell 23. The inner wall of each correction shell 6 is fixedly connected to eight return springs 5. One end of each return spring 5 is fixedly connected to the outer surface of the displacement block 22. The outer surface of each auxiliary shell 10 has two balance grooves 4. The outer surface of each correction shell 6 is fixedly connected to a balance frame 9. The outer surface of each balance frame 9 is slidably connected to the interior of the two balance grooves 4.

[0042] Specifically, when the arc-shaped slide rail 7 is subjected to the downward spiral force of the threaded rod 3, the arc-shaped slide rail 7 will move vertically downward under the force. The arc-shaped slide rail 7 drives the threaded moving shell 23 to move downward through the straightening shell 6. Since the threaded moving shell 23 is threadedly connected to the screw rod 20, the screw rod 20 will rotate inside the two bearings 21 under the action of the threaded connection during the downward movement of the threaded moving shell 23. The balance frame 9 ensures the stability during the movement. After the tilt angle of the threaded rod 3 is adjusted, the threaded rod 3 is not perpendicular to the ground. During the downward movement, it will gradually move back and forth. The arc-shaped slide rail 7 directly drives the displacement block 22 to slide inside the straightening shell 6, squeezing the return spring 5 to ensure that the threaded rod 3 moves downward smoothly to drill. The auxiliary lifting unit achieves smooth lifting and lowering, avoids drilling deviation caused by drilling rig shaking, and improves the overall quality and efficiency of geological exploration work.

[0043] Working principle:

[0044] When the device needs to be moved, the PLC controller 11 controls the first hydraulic cylinder 18 to start. The telescopic end of the first hydraulic cylinder 18 drives the telescopic shell 19 to slide up and down inside the storage shell 2, thereby realizing the lifting and lowering of the caster wheel 12, so that the base frame 1 can be moved to the designated position and fixed. When drilling is required, the threaded swing shell 14 is directly pushed. The threaded swing shell 14 slides in the arc-shaped groove 32 on the inner wall of the adjusting shell 13 through the sliding plate 34 to ensure stability, thereby changing the tilt angle of the threaded rod 3 and the bottom connected drill bit. The angle sensor 15 monitors the angle change in real time and transmits the data to the PLC controller 11. The operator can accurately adjust the angle by observing the angle scale plate 27 and the indicator scale needle 28 to meet the drilling needs of different terrains. After adjusting to the appropriate angle, the PLC controller 11 controls the second hydraulic cylinder 30 to start. The telescopic end of the second hydraulic cylinder 30 pushes the push plate 26. The stabilizing block 24 slides in the stabilizing groove 31 to ensure that the push plate 26 smoothly abuts against the threaded swing shell 14 to achieve initial fixation. Then, the electric telescopic rod 17 is controlled to extend, driving the positioning rod 16 to pass through in sequence. The adjusting shell 13 and the metal auxiliary plate 29 are inserted into the positioning groove 33 on the right side of the threaded swing shell 14 to firmly lock the position of the threaded swing shell 14. Then, the stepper motor 8 drives the threaded rod 3 to rotate downward spirally inside the threaded swing shell 14. Drilling is performed through the bottom drill bit. When the threaded rod 3 is drilling downward spirally, the arc-shaped slide rail frame 7 will be subjected to force and move vertically downward. The straightening shell 6 drives the threaded moving shell 23 to move downward. The threaded moving shell 23 is threadedly connected to the spiral rod 20, so that it rotates inside the two bearings 21. The balance frame 9 slides in the balance groove 4 to ensure the stability of movement. If the threaded rod 3 is not perpendicular to the ground after adjusting the tilt angle, the arc-shaped slide rail frame 7 drives the displacement block 22 to slide and squeeze the reset spring 5 inside the straightening shell 6 during the downward movement, so as to ensure that the threaded rod 3 moves downward smoothly to drill. This realizes convenient movement of the device, precise angle adjustment, stable drilling and smooth lifting. It avoids problems such as inconvenient device movement, limited angle adjustment, angle change and drilling rig shaking that affect the geological exploration work, and improves the overall quality and efficiency of geological exploration work.

[0045] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a geological prospecting drilling rig, comprising a chassis (1), characterized in that: The bottom surface of the chassis (1) is fixedly connected with four receiving shells (2), the bottom of each receiving shell (2) is provided with a universal wheel (12), each receiving shell (2) is fixedly connected with a receiving unit through the top of the universal wheel (12), the inner wall of the chassis (1) is fixedly connected with an adjusting shell (13), the inside of the adjusting shell (13) is provided with a positioning unit, the top of the chassis (1) is provided with a stepping motor (8), the output end of the stepping motor (8) is fixedly connected with an adjusting mechanism, and the top of the chassis (1) is fixedly connected with an auxiliary lifting unit through the stepping motor (8).

2. The positioning device for a drill rig for geophysical prospecting according to claim 1, characterized in that: The receiving unit comprises a first hydraulic cylinder (18) fixed to the inner top wall of each receiving shell (2), the telescopic end of each first hydraulic cylinder (18) is fixedly connected with a telescopic shell (19), the outer surface of each telescopic shell (19) is slidably connected with the inside of the receiving shell (2), and the bottom surface of each telescopic shell (19) is fixedly connected with the upper surface of the universal wheel (12). The upper surface of the chassis (1) is fixedly connected with a PLC controller (11), and the PLC controller (11) is electrically connected with the first hydraulic cylinder (18) through wires.

3. The positioning device for a drill rig for geophysical prospecting according to claim 2, characterized in that: The adjusting mechanism comprises a threaded swing shell (14) located in the adjusting shell (13), the inner wall of the threaded swing shell (14) is threadedly connected with a threaded rod (3), the top end of the threaded rod (3) is fixedly connected with the output end of the stepping motor (8), the top of the chassis (1) is provided with an arc-shaped sliding rail frame (7), the inside of the arc-shaped sliding rail frame (7) is slidably connected with a sliding block (25), the top end of the stepping motor (8) is fixedly connected with the bottom surface of the sliding block (25), the inner wall of the adjusting shell (13) is provided with four arc-shaped sliding grooves (32), and the outer surface of the threaded swing shell (14) is fixedly connected with four sliding plates (34). The outer surface of each sliding plate (34) is slidably connected with the inside of the arc-shaped sliding groove (32).

4. The positioning device for a drill rig used in geophysical prospecting according to claim 3, characterized in that: The inner wall of the adjusting shell (13) is fixedly connected with a metal auxiliary plate (29), the outer surface of the metal auxiliary plate (29) is in contact with the outer surface of the threaded swing shell (14), the front surface of the threaded swing shell (14) is fixedly connected with an angle sensor (15), the left side of the threaded swing shell (14) is provided with an angle scale plate (27), and the inner wall of the threaded swing shell (14) is fixedly connected with an indicating scale needle (28).

5. The positioning device for a drill rig used in geophysical prospecting according to claim 4, characterized in that: The positioning unit comprises a second hydraulic cylinder (30) fixedly connected to the inner wall of the adjusting shell (13), the telescopic end of the second hydraulic cylinder (30) is fixedly connected with a push plate (26), the inner wall of the adjusting shell (13) is provided with two stabilizing grooves (31), each stabilizing groove (31) is slidably connected with a stabilizing block (24), the side face of the two stabilizing blocks (24) close to each other is fixedly connected with the front face and the back face of the push plate (26) respectively, the right side face of the push plate (26) is in contact with the left side face of the threaded swing shell (14), the upper surface of the push plate (26) is fixedly connected with the bottom face of the angle scale plate (27), the inner wall of the chassis (1) is fixedly connected with an electric telescopic rod (17), the telescopic end of the electric telescopic rod (17) is fixedly connected with a positioning rod (16), the right side face of the threaded swing shell (14) is provided with a plurality of positioning grooves (33), the left end of the positioning rod (16) extends to the inside of the positioning groove (33) in sequence through the adjusting shell (13) and the metal auxiliary plate (29), and the PLC controller (11) is electrically connected with the stepping motor (8), the angle sensor (15), the second hydraulic cylinder (30) and the electric telescopic rod (17) through wires.

6. The positioning device for a drill rig used in geophysical prospecting according to claim 4, characterized in that: The auxiliary lifting unit comprises four auxiliary shells (10) fixedly connected to the upper surface of the chassis (1), the inner wall of each auxiliary shell (10) is fixedly connected with two bearings (21), the inner ring of each two bearings (21) is fixedly connected with a spiral rod (20) in common, the outer surface of each spiral rod (20) is threadedly connected with a threaded moving shell (23), the outer surface of each threaded moving shell (23) is slidably connected with the inside of the auxiliary shell (10), the outer surface of the arc-shaped sliding rail frame (7) is fixedly connected with four displacement blocks (22), the outer side of each displacement block (22) is provided with a correction shell (6), the inside of each correction shell (6) is slidably connected with the outer surface of the displacement block (22), one end of each correction shell (6) is fixedly connected with the outer surface of the threaded moving shell (23), and the inner wall of each correction shell (6) is fixedly connected with eight reset springs (5), one end of each reset spring (5) is fixedly connected with the outer surface of the displacement block (22).

7. The positioning device for a drill rig for geophysical prospecting according to claim 6, characterized in that: The outer surface of each auxiliary shell (10) is provided with two balance grooves (4), the outer surface of each correction shell (6) is fixedly connected with a balance frame (9), and the outer surface of each balance frame (9) is slidably connected with the inside of the two balance grooves (4).

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