A spliced drilling tower for mountainous geological drilling and a construction method thereof

Abstract

This invention discloses a modular drilling rig for geological drilling in mountainous areas, comprising a base and a rig body. A fixed frame is fixedly mounted on the top of the base and rotatably connected to a hydraulic cylinder. The rig body encloses two sets of symmetrically arranged folding trusses. Each folding truss includes three sets of folding sections that are rotatably connected end-to-end. The bottom of the lowest folding section is rotatably connected to the fixed frame, and the output end of the hydraulic cylinder is rotatably connected to the lowest folding section. A rotary drive assembly is provided between two adjacent folding sections. Alignment components with anti-rebound structures are provided between two adjacent folding sections and between each fixed frame and adjacent folding sections. A gantry beam is provided between the uppermost folding sections of the two folding trusses. Crossbeam support rods are provided between the middle folding sections of the two folding trusses and between the lowermost folding sections of the two folding trusses. This design improves construction efficiency while reducing the space requirements for the erection site.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, specifically relating to a modular drilling tower for geological drilling in mountainous areas and its construction method. Background Technology

[0002] Drilling rigs serve as the lifting supports at drilling sites, responsible for raising and lowering drill strings, bearing lifting loads, and providing conditions for high-altitude operations. However, mineral exploration operations in hilly and mountainous areas present challenges such as: difficulties in transporting large equipment in mountainous terrain; limited space for rig erection due to the requirements of green drilling (minimizing the use of forest and farmland); and high load-bearing capacity requirements for the rig. Independent, integrally erected A-type rigs are too large, requiring significant space for transportation, installation, and erection, making them unsuitable for geological drilling in hilly and mountainous areas.

[0003] Currently, the main drilling rigs used in geological drilling in hilly and mountainous areas are lightweight square-shaped drilling rigs and mast-type drilling rigs, while the petroleum industry generally uses independent, integrally erected A-type rigs. Lightweight square-shaped drilling rigs have poor load-bearing capacity and are only suitable for drilling depths of no more than 1800 meters; furthermore, their installation involves high-altitude operations and is highly dangerous. Mast-type drilling rigs are generally no more than 9 meters high, and the length of drill rod that can be lifted at one time is small, making construction inconvenient and increasing work time and labor consumption. Independent, integrally erected A-type rigs are too large and require ample space for erection, making them unsuitable for geological drilling in hilly and mountainous areas. Therefore, there is a need for a modular drilling rig specifically designed for geological drilling in mountainous areas. Summary of the Invention

[0004] The present invention aims to provide a modular drilling tower and construction method for geological drilling in mountainous areas, so as to improve construction efficiency while reducing the space requirements for erection site.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A modular drilling rig for geological drilling in mountainous areas includes a base and a rig body. A fixed frame is symmetrically fixed to the top of the base, and a hydraulic cylinder is rotatably connected to the top of the base. The rig body encloses two sets of symmetrically arranged folding trusses. Each folding truss includes three sets of folding sections that are rotatably connected end-to-end. The bottom of the lowest folding section is rotatably connected to the fixed frame. The output end of the hydraulic cylinder is rotatably connected to the lowest folding section. A rotary drive assembly is provided between two adjacent folding sections. Alignment assemblies with anti-rebound structures are provided between two adjacent folding sections and between each fixed frame and an adjacent folding section. A gantry beam is provided between the uppermost folding sections of the two folding trusses, with both ends of the gantry beam fixedly connected to adjacent folding sections. Crossbeam support rods are provided between the middle folding sections of the two folding trusses and between the lowermost folding sections of the two folding trusses, with the ends of the crossbeam support rods fixedly connected to adjacent folding sections.

[0006] In this invention, each of the folding sections includes a lower connecting section, a plurality of standard sections, and an upper connecting section that are fixedly connected end to end from bottom to top. A connecting plate is fixedly provided on the outer side wall of the lower connecting section, and a connecting ear is fixedly provided on the outer side wall of the upper connecting section and the outer side wall of the fixing frame. A connecting shaft is rotatably inserted into the connecting ear, and each of the connecting plates is fixedly sleeved on the adjacent connecting shaft.

[0007] In this invention, a bracket is fixedly installed inside the upper connecting section, and the rotary drive assembly includes a motor, a worm and a worm wheel. The motor is fixedly installed on the top of the bracket, the worm wheel is fixedly sleeved on the connecting shaft, the worm is rotatably installed on the outside of the upper connecting section and is connected to the output end of the motor, and each worm meshes with the adjacent worm wheel.

[0008] In this invention, the centering assembly includes a base and a docking rod. The base is fixedly connected to the bottom of the lower connecting section on the side away from the connecting plate. The docking rod is fixedly connected to the top of the upper connecting section on the side away from the connecting ear. The bottom of the base is recessed with a groove that mates with the docking rod. Limiting rings are fixedly fitted on both sides of the base. The outer walls of the two limiting rings on the side closest to each other are respectively provided with guide slopes along their circumference.

[0009] In this invention, the inner sidewall of the slot is provided with a receiving groove along its circumference, and a rotating shaft is inserted into the receiving groove on both sides of the slot. The anti-rebound structure includes an arc-shaped clamping block that is rotatably sleeved on each rotating shaft. A ratchet is fixedly provided on one side of the arc-shaped clamping block outside the rotating shaft. The inner sidewall of the receiving groove is also provided with a fixed shaft, and a pawl that cooperates with the ratchet is rotatably sleeved on the fixed shaft.

[0010] In this invention, a push rod and a top rod are slidably inserted into the inner sidewall of the receiving groove at intervals. A sliding groove is provided in the base, and a slider is slidably inserted in the sliding groove. A connecting rod is rotatably connected to one end of the slider, and the end of the connecting rod is rotatably connected to the sidewall of the push rod. A guide slope is provided on the other end of the slider away from the receiving groove. A first baffle is fixedly sleeved on the outside of the push rod. A first compression spring is provided on the side of the first baffle away from the receiving groove outside the push rod. A second baffle is fixedly sleeved on the outside of the top rod. A second compression spring is provided on the side of the second baffle near the receiving groove outside the top rod. A limit groove is also provided on the radial sidewall of the top rod. Guide slopes are provided on the bottom of the pawl near the top rod and the top of the arc-shaped clamp near the push rod.

[0011] In this invention, horizontal plates are fixedly provided at the four corners of the top of the fixing frame, the four corners of the top of each of the upper connecting sections, and the four corners of the bottom of each of the lower connecting sections, and each of the four corners of the horizontal plates is provided with a through insertion hole.

[0012] In this invention, the top surface of the fixing frame is inclined to the top of the base.

[0013] In this invention, the outer walls of the lowermost and middle folding sections of each folding truss are rotatably connected to diagonal braces, and the bottom of each diagonal brace is rotatably connected to the base.

[0014] The erection method for the prefabricated drilling rig used in mountainous geological drilling as described in claim 9 includes the following steps: S1: The motor on the middle folding section of each folding truss drives the corresponding worm gear and worm wheel to rotate, thereby causing the uppermost folding section to rotate 180°, and the centering component locks the uppermost folding section and the middle folding section. S2: Extend the hydraulic cylinder to push the lowest folding section of each folding truss to rotate 15° relative to the base; S3: Unlock the centering assembly between the uppermost folding section and the middle folding section, causing the motor on the middle folding section to drive the corresponding worm gear and worm wheel to rotate, causing the uppermost folding section to rotate 180°, and continue to extend the hydraulic cylinder to push the lowermost folding section of each folding truss to rotate to be perpendicular to the base. The centering assembly locks the lowermost folding section and the fixing frame, and the fastening bolts are passed through the two mating horizontal plates. S4: The motor on the lowest folding section of the folding truss drives the corresponding worm gear and worm wheel to rotate, causing the middle folding section to rotate 180°. The centering assembly locks the middle folding section and the lower folding section. The fastening bolts are passed through the two mating horizontal plates. Then the diagonal brace is rotatably connected to the lowest folding section. Finally, the bottom of the diagonal brace is rotatably connected to the base. S5: The motor on the middle folding section of the folding truss drives the corresponding worm gear and worm wheel to rotate, causing the uppermost folding section to rotate 180°. The centering assembly locks the uppermost folding section and the middle folding section. The fastening bolt is passed through the two mating horizontal plates. Then, the other diagonal brace is rotatably connected to the middle folding section. Finally, the bottom of the other diagonal brace is rotatably connected to the base. The steps for locking the centering components in S1, S3, S4, and S5 are as follows: When the lower connecting section rotates relative to the upper connecting section below it until the mating rod contacts the arc-shaped clamping block, the mating rod pushes the arc-shaped clamping block to rotate, and the ratchet pushes the pawl to rotate until the mating rod fits into the slot, and the bottom of the inner side wall of the arc-shaped clamping block fits into the radial side wall of the mating rod. After the arc-shaped clamping block rotates to disengage from the push rod, the first compression spring pushes the push rod to move. When the push rod moves, it drives the slider to move through the connecting rod until the guide slope of the slider contacts the end of the push rod. When the lower connecting section has a tendency to move away from the adjacent upper connecting section below it, the pawl prevents the ratchet and the arc-shaped clamping block from rotating.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By connecting three sets of folding sections end to end in sequence and rotating them sequentially through the extension hydraulic cylinder and the rotation worm gear to rotate the corresponding folding sections to be perpendicular to the base, the space requirements for the erection site can be reduced, while increasing the overall height of the tower and the length of the drill rod lifted in a single operation, thereby improving construction efficiency.

[0016] 2. By using the centering component with an anti-rebound structure, the insertion holes of two mating horizontal plates can be quickly aligned, making it convenient to insert fastening bolts. It can also suppress the reset movement caused by force after the folding section rotates to the appropriate position, thus preventing loosening and achieving precise positioning.

[0017] 3. By using the top rod, the anti-rebound structure can be unlocked when the drilling rig is dismantled. By using the push rod, the top rod can be automatically reset after the centering component is unlocked, thus avoiding the failure of the anti-rebound structure due to the top rod continuously pushing the pawl out of the ratchet.

[0018] 4. By arranging the top surface of the fixed frame inclined to the top surface of the base, the two sets of folding trusses and the overhead crane beam and crossbeam support rod between the two folding trusses can form an A-shaped structure, which improves the overall structural stability of the device. Attached Figure Description

[0019] Figure 1 This is a top view of the invention in use. Figure 2 This is an enlarged view of the connection between adjacent folded sections of the present invention; Figure 3 This is an enlarged view of the centering component of the present invention; Figure 4 This is a cross-sectional view of the centering component of the present invention; Figure 5 This is a side view of the invention in use. Figure 6 This is a two-side view of the invention in use. Figure 7 This is a three-side view of the invention in use. Figure 8This is a four-side view of the invention in use. Figure 9 This is a side view of the present invention in use. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 10, base; 11, fixing frame; 12, hydraulic cylinder; 2, folding truss; 20, folding section; 21, lower connecting section; 22, standard section; 23, upper connecting section; 24, connecting plate; 25, connecting lug; 26, connecting shaft; 27, bracket; 31, crane beam; 32, crossbeam support rod; 41, motor; 42, worm gear; 43, worm wheel; 51, base; 511, slot. 512. Receiving groove; 513. Slide groove; 52. Connecting rod; 53. Limiting ring; 61. Arc-shaped clamping block; 611. Notch; 62. Ratchet; 63. Pawl; 64. Push rod; 641. First baffle; 65. Top rod; 651. Second baffle; 652. Limiting groove; 66. Sliding block; 67. Connecting rod; 68. First compression spring; 69. Second compression spring; 70. Horizontal plate; 80. Diagonal brace; 90. Temporary support rod.

[0021] Example: As attached Figure 1-9 As shown, this invention discloses a modular drilling rig for geological drilling in mountainous areas, comprising a base 10 and a rig body. The base 10 is welded from I-beams. A fixing frame 11 is symmetrically fixed to the top of the base 10, and a hydraulic cylinder 12 is rotatably connected to the top of the base 10. The rig body encloses two sets of symmetrically arranged folding trusses 2. Each folding truss 2 includes three sets of folding sections 20 that are rotatably connected end-to-end in sequence. The bottom of the lowest folding section 20 is rotatably connected to the fixing frame 11. The output end of the hydraulic cylinder 12 is rotatably connected to the lowest folding section 20. A rotary drive assembly is provided between two adjacent folding sections 20. The connections between two adjacent folding sections 20 and between each fixing frame 11 and adjacent folding sections 20 are also specified. A centering assembly with an anti-rebound structure is provided between each of the two folding trusses 2. A crane beam 31 is provided between the uppermost folding section 20 of the two folding trusses 2. The two ends of the crane beam 31 are fixedly connected to the adjacent folding section 20. A crossbeam support rod 32 is provided between the middle folding section 20 of the two folding trusses 2 and between the lowermost folding section 20 of the two folding trusses 2. The ends of the crossbeam support rod 32 are fixedly connected to the adjacent folding section 20. A temporary support rod 90 is detachably rotatably connected to the side wall of the lowermost folding section 20. The rotation connection point of the hydraulic cylinder 12 and the lowermost folding section 20 is eccentrically arranged to the rotation connection point between the lowermost folding section 20 and the fixed frame 11.

[0022] In this embodiment, each of the folding sections 20 includes a lower connecting section 21, a plurality of standard sections 22, and an upper connecting section 23, which are fixedly connected end to end from bottom to top. A connecting plate 24 is fixedly provided on the outer side wall of the lower connecting section 21. A connecting ear 25 is fixedly provided on the outer side wall of the upper connecting section 23 and the outer side wall of the fixing frame 11. A connecting shaft 26 is rotatably inserted into the connecting ear 25. Each connecting plate 24 is fixedly sleeved on the adjacent connecting shaft 26. The lower connecting section 21, the standard section 22, and the upper connecting section 23 are all welded from steel pipes.

[0023] In this embodiment, a bracket 27 is fixedly installed inside the upper connecting section 23. The rotary drive assembly includes a motor 41, a worm 42, and a worm wheel 43. The motor 41 is fixedly installed on the top of the bracket 27. The worm wheel 43 is fixedly sleeved on the connecting shaft 26. The worm 42 is rotatably installed on the outside of the upper connecting section 23 and is connected to the output end of the motor 41. Each worm 42 meshes with an adjacent worm wheel 43.

[0024] In this embodiment, the centering assembly includes a base 51 and a docking rod 52. The base 51 is fixedly connected to the bottom of the lower connecting section 21 on the side away from the connecting plate 24. The docking rod 52 is fixedly connected to the top of the upper connecting section 23 on the side away from the connecting ear 25. The bottom of the base 51 is recessed with a groove 511 that mates with the docking rod 52. The docking rod 52 is fixedly fitted with limiting rings 53 on both sides of the base 51. The outer walls of the two limiting rings 53 that are close to each other are respectively provided with guide slopes along their circumference.

[0025] In this embodiment, the inner sidewall of the slot 511 is provided with a receiving groove 512 along its circumference. Rotating shafts are respectively inserted into the receiving groove 512 on both sides of the slot 511. The anti-rebound structure includes arc-shaped clamping blocks 61 respectively rotatably sleeved on each rotating shaft. The two arc-shaped clamping blocks 61 are symmetrically arranged along the center of the base 51. A notch 611 is provided at the top of the arc-shaped clamping block 61, and the weight of the upper part of the arc-shaped clamping block 61 is greater than the weight of the lower part. A ratchet 62 is fixedly provided on one side of the arc-shaped clamping block 61 outside the rotating shaft. A fixed shaft is also provided on the inner sidewall of the receiving groove 512. A pawl 63 that cooperates with the ratchet 62 is rotatably sleeved on the fixed shaft. A torsion spring is sleeved on the fixed shaft, and the two torsion arms of the torsion spring are respectively connected to the pawl 63 and the base 51.

[0026] In some embodiments, the rotating shaft is fitted with a torsion spring, and the two torsion arms of the torsion spring are respectively connected to the arc-shaped clamp 61 and the base 51.

[0027] In this embodiment, a push rod 64 and a top rod 65 are slidably inserted into the inner wall of the receiving groove 512 at intervals. A sliding groove 513 is provided in the base 51, and a slider 66 is slidably inserted into the sliding groove 513. A connecting rod 67 is rotatably connected to one end of the slider 66, and the end of the connecting rod 67 is rotatably connected to the side wall of the push rod 64. A guide slope is provided on the other end of the slider 66 away from the receiving groove 512. A first baffle 641 is fixedly sleeved on the outside of the push rod 64. A first compression spring 68 is provided on the side of the first baffle 64 away from the receiving groove 512. A second baffle 651 is fixedly sleeved on the outside of the top rod 65. A second compression spring 69 is provided on the side of the second baffle 65 near the receiving groove 512. A limit groove 652 is also provided on the radial side wall of the top rod 65. A guide slope is provided on the bottom of the pawl 63 near the top rod 65 and the top of the arc-shaped clamp 61 near the push rod 64.

[0028] In this embodiment, horizontal plates 70 are fixedly provided at the four corners of the top of the fixing frame 11, the four corners of the top of each of the upper connecting sections 23, and the four corners of the bottom of each of the lower connecting sections 21. Each of the four corners of the horizontal plates 70 is provided with a through hole.

[0029] In this embodiment, the top surface of the fixing frame 11 is inclined to the top of the base 10.

[0030] In this embodiment, the outer walls of the folding sections 20 located at the bottom and the middle of each folding truss 2 are respectively rotatably connected to diagonal braces 80, and the bottom of each diagonal brace 80 is rotatably connected to the base 10.

[0031] The specific implementation process is as follows: S1: The motor 41 on the middle folding section 20 of each folding truss 2 drives the corresponding worm 42 and worm wheel 43 to rotate, thereby causing the uppermost folding section 20 to rotate 180°. The centering component locks the uppermost folding section 20 and the middle folding section 20, reducing the force on the hydraulic cylinder 12. S2: Extend the hydraulic cylinder 12 so that it pushes the lowermost folding section 20 of each folding truss 2 to rotate 15° relative to the base 10. S3: Unlock the centering assembly between the uppermost folding section 20 and the middle folding section 20, so that the motor 41 on the middle folding section 20 drives the corresponding worm gear 42 and worm wheel 43 to rotate, so that the uppermost folding section 20 rotates 180°, and continues to extend the hydraulic cylinder 12, so that it pushes the lowermost folding section 20 of each folding truss 2 to rotate to be perpendicular to the base 10. The centering assembly locks the lowermost folding section 20 and the fixing frame 11. The fastening bolt passes through the two mutually fitting horizontal plates 70, and the bottom of the temporary support rod 90 is rotatably connected to the base 10. S4: The motor 41 on the lowest folding section 20 of the folding truss 2 drives the corresponding worm gear 42 and worm wheel 43 to rotate, causing the middle folding section 20 to rotate 180°. The centering assembly locks the middle folding section 20 and the lower folding section 20. The fastening bolts are passed through the two mating horizontal plates 70. Then the diagonal brace 80 is rotatably connected to the lowest folding section 20. The bottom of the diagonal brace 80 is then rotatably connected to the base 10. S5: The motor 41 on the middle folding section 20 of the folding truss 2 drives the corresponding worm gear 42 and worm wheel 43 to rotate, so that the uppermost folding section 20 rotates 180°. The centering assembly locks the uppermost folding section 20 and the middle folding section 20. The fastening bolt passes through the two mutually fitting horizontal plates 70. Then, the other diagonal brace 80 is rotatably connected to the middle folding section 20. Then, the bottom of the other diagonal brace 80 is rotatably connected to the base 10. The steps for locking the centering components in S1, S3, S4, and S5 are as follows: When the lower connecting section 21 rotates relative to the upper connecting section 23 below it until the docking rod 52 contacts the arc-shaped clamping block 61, the docking rod 52 pushes the arc-shaped clamping block 61 to rotate, and the ratchet 62 pushes the pawl 63 to rotate until the docking rod 52 fits into the slot 511, and the bottom of the inner side wall of the arc-shaped clamping block 61 fits into the radial side wall of the docking rod 52. After the arc-shaped clamping block 61 rotates to disengage from the push rod 64, the first compression spring 68 pushes the push rod 64 to move. When the push rod 64 moves, it drives the slider 66 to move through the connecting rod 67 until the guide slope of the slider 66 contacts the end of the top rod 65. When the lower connecting section 21 has a tendency to move away from the adjacent upper connecting section 23 below it, the pawl 63 prevents the ratchet 62 and the arc-shaped clamping block 61 from rotating. The steps for S1 and unlocking the centering component during tower dismantling are as follows: Press the push rod 65 to make the end of the push rod 65 push the pawl 63 to rotate until it disengages from the ratchet 62. When the push rod 65 moves, it pushes the slider 66 to move. The push rod 64 moves accordingly and compresses the first compression spring 68. When the limiting groove 652 is aligned with the slider 66, the first compression spring 68 drives the slider 66 to move through the push rod 64 and makes the slider 66 lock in the limiting groove 652. Release the push rod 65. The push rod 65 continues to push the pawl 63 to disengage from the ratchet 62. Rotate the lower connecting section 21. The connecting rod 52 pushes the arc-shaped clamp 61 to rotate. When the guide slope of the arc-shaped clamping block 61 contacts the push rod 64, it pushes the push rod 64 to move, thereby causing the slider 66 to disengage from the top rod 65. The second compression spring 69 then pushes the top rod 65 to reset, and the pawl 63 resets accordingly.

[0032] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0033] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A modular drilling rig for geological drilling in mountainous areas, characterized in that, include: The base has a fixed frame symmetrically fixed on its top, and a hydraulic cylinder is rotatably connected to the top of the base. The tower body includes two sets of symmetrically arranged folding trusses. Each folding truss includes three sets of folding sections that are rotatably connected end to end in sequence. The bottom of the lowest folding section is rotatably connected to the fixed frame. The output end of the hydraulic cylinder is rotatably connected to the lowest folding section. A rotary drive assembly is provided between two adjacent folding sections. A centering assembly with an anti-rebound structure is provided between two adjacent folding sections and between each fixed frame and an adjacent folding section. A crane beam is provided between the uppermost folding sections of the two folding trusses, and the two ends of the crane beam are fixedly connected to the adjacent folding sections respectively. A crossbeam support rod is provided between the middle folding sections of the two folding trusses and between the lowermost folding sections of the two folding trusses respectively, and the ends of the crossbeam support rod are fixedly connected to the adjacent folding sections respectively.

2. The assembled drilling rig for geological drilling in mountainous areas as described in claim 1, characterized in that: Each of the folding sections includes a lower connecting section, multiple standard sections, and an upper connecting section that are fixedly connected end to end from bottom to top. A connecting plate is fixedly provided on the outer side wall of the lower connecting section, and a connecting ear is fixedly provided on the outer side wall of the upper connecting section and the outer side wall of the fixing frame. A connecting shaft is rotatably inserted into the connecting ear, and each connecting plate is fixedly sleeved on the adjacent connecting shaft.

3. The modular drilling rig for geological drilling in mountainous areas as described in claim 2, characterized in that: A bracket is fixedly installed inside the upper connecting section. The rotary drive assembly includes a motor, a worm, and a worm wheel. The motor is fixedly installed on the top of the bracket. The worm wheel is fixedly sleeved on the connecting shaft. The worm is rotatably installed on the outside of the upper connecting section and is connected to the output end of the motor. Each worm meshes with an adjacent worm wheel.

4. The assembled drilling rig for geological drilling in mountainous areas as described in claim 3, characterized in that: The centering assembly includes a base and a docking rod. The base is fixedly connected to the bottom of the lower connecting section on the side away from the connecting plate. The docking rod is fixedly connected to the top of the upper connecting section on the side away from the connecting ear. The bottom of the base is recessed with a groove that mates with the docking rod. Limiting rings are fixedly fitted on both sides of the base. The outer walls of the two limiting rings on the side closest to each other are respectively provided with guide slopes along their circumference.

5. The assembled drilling rig for geological drilling in mountainous areas as described in claim 4, characterized in that: The inner sidewall of the slot is provided with a receiving groove along its circumference. A rotating shaft is inserted into the receiving groove on both sides of the slot. The anti-rebound structure includes an arc-shaped clamping block that is rotatably sleeved on each of the rotating shafts. A ratchet is fixedly provided on one side of the arc-shaped clamping block outside the rotating shaft. The inner sidewall of the receiving groove is also provided with a fixed shaft. A pawl that cooperates with the ratchet is rotatably sleeved on the fixed shaft.

6. The assembled drilling rig for geological drilling in mountainous areas as described in claim 5, characterized in that: The inner wall of the receiving groove is slidably fitted with a push rod and a top rod at intervals. The base is provided with a sliding groove, and a slider is slidably fitted in the sliding groove. One end of the slider is rotatably connected to a connecting rod, and the end of the connecting rod is rotatably connected to the side wall of the push rod. The other end of the slider is provided with a guide ramp on the side away from the receiving groove. A first baffle is fixedly sleeved on the outside of the push rod. A first compression spring is provided on the side of the first baffle away from the receiving groove. A second baffle is fixedly sleeved on the outside of the top rod. A second compression spring is provided on the side of the second baffle near the receiving groove. The radial side wall of the top rod is also provided with a limit groove. The bottom of the pawl near the top rod and the top of the arc-shaped clamp near the push rod are both provided with guide ramps.

7. The modular drilling rig for geological drilling in mountainous areas as described in claim 6, characterized in that: A horizontal plate is fixedly installed at the four corners of the top of the fixed frame, the four corners of the top of each of the upper connecting sections, and the four corners of the bottom of each of the lower connecting sections. Each of the four corners of the horizontal plate is provided with a through-hole.

8. The assembled drilling rig for geological drilling in mountainous areas as described in claim 7, characterized in that: The top surface of the fixing frame is inclined to the top surface of the base.

9. The assembled drilling rig for geological drilling in mountainous areas as described in claim 8, characterized in that: Each of the folding trusses has diagonal bracing rods rotatably connected to the outer walls of the folding sections located at the bottom and the middle, and the bottom of each diagonal bracing rod is rotatably connected to the base.

10. The method for erecting a prefabricated drilling rig for geological drilling in mountainous areas as described in claim 9, characterized in that, Includes the following steps: S1: The motor on the middle folding section of each folding truss drives the corresponding worm gear and worm wheel to rotate, thereby causing the uppermost folding section to rotate 180°, and the centering component locks the uppermost folding section and the middle folding section. S2: Extend the hydraulic cylinder to push the lowest folding section of each folding truss to rotate 15° relative to the base; S3: Unlock the centering assembly between the uppermost folding section and the middle folding section, causing the motor on the middle folding section to drive the corresponding worm gear and worm wheel to rotate, causing the uppermost folding section to rotate 180°, and continue to extend the hydraulic cylinder to push the lowermost folding section of each folding truss to rotate to be perpendicular to the base. The centering assembly locks the lowermost folding section and the fixing frame, and the fastening bolts are passed through the two mating horizontal plates. S4: The motor on the lowest folding section of the folding truss drives the corresponding worm gear and worm wheel to rotate, causing the middle folding section to rotate 180°. The centering assembly locks the middle folding section and the lower folding section. The fastening bolts are passed through the two mating horizontal plates. Then the diagonal brace is rotatably connected to the lowest folding section. Finally, the bottom of the diagonal brace is rotatably connected to the base. S5: The motor on the middle folding section of the folding truss drives the corresponding worm gear and worm wheel to rotate, causing the uppermost folding section to rotate 180°. The centering assembly locks the uppermost folding section and the middle folding section. The fastening bolt is passed through the two mating horizontal plates. Then, the other diagonal brace is rotatably connected to the middle folding section. Finally, the bottom of the other diagonal brace is rotatably connected to the base. The steps for locking the centering components in S1, S3, S4, and S5 are as follows: When the lower connecting section rotates relative to the upper connecting section below it until the mating rod contacts the arc-shaped clamping block, the mating rod pushes the arc-shaped clamping block to rotate, and the ratchet pushes the pawl to rotate until the mating rod fits into the slot, and the inner side wall of the arc-shaped clamping block fits into the radial side wall of the mating rod. After the arc-shaped clamping block rotates to disengage from the push rod, the first compression spring pushes the push rod to move. When the push rod moves, it drives the slider to move through the connecting rod until the guide slope of the slider contacts the end of the top rod. When the lower connecting section has a tendency to move away from the adjacent upper connecting section below it, the pawl prevents the ratchet and the arc-shaped clamping block from rotating.

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