Auxiliary device for large-caliber drilling construction of ultra-thick sandstone aquifer

Abstract

The invention relates to the technical field of drilling equipment, in particular to an auxiliary device for large-diameter drilling construction of an ultra-thick sandstone aquifer, which comprises a fixing frame and a pair of mounting plates mounted on a drilling machine climbing frame, the mounting plates are fixedly connected to the rear side of the fixing frame, and sliding blocks are slidably connected to two ends of the side wall of the fixing frame. Through the arrangement of the structure, the adjusting ring can be rapidly clamped to the outer wall of a pipeline, then the position of the electric telescopic cylinder is adjusted by sliding the arc-shaped T-shaped blocks, the adjusting plate is moved to the position, deviating from the lower portion, of the pipeline and protrudes out of the lower portion of the pipeline, and then the pipeline is adjusted. The electric telescopic cylinder can be controlled to drive the adjusting plate to move so as to extrude the pipeline to be aligned and positioned with a pipeline driven into a well below, so that rapid joint alignment of the pipeline is realized, welding workers do not need to push the pipeline for joint alignment, and the pipeline does not need to be held all the time, and the drilling efficiency in the construction process is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and in particular to a large-diameter drilling construction auxiliary device for a thick sandstone aquifer. Background Art

[0002] As the country's requirements for green mine construction are further improved, the market size of large-diameter multifunctional wells will continue to increase, and the economic, social and environmental benefits they bring will become increasingly apparent, providing a broad space for the advancement of large-diameter engineering drilling technology and the economic development of the drilling industry. According to the mine development layout and drainage needs, mines sometimes need to drill special straight-drain holes from the ground for the layout of mine drainage pipelines. For some mining areas, drilling through tunnels from the ground to underground will encounter complex geological conditions, especially the Luohe Formation.

[0003] During the large-diameter drilling construction process, pipelines are laid while drilling. However, the length of a large-diameter deep well can generally reach 300-500m, or even deeper, but each pipeline is only about 4 meters long. Therefore, when laying the pipeline, the pipelines need to be welded. However, in the existing drilling construction process, the construction of large-diameter deep wells is generally carried out outdoors in some areas that are about to be constructed. Therefore, intelligent welding equipment cannot be used, and only manual welding can be used. However, during the pipeline docking process, in order to ensure the quality of drilling, welding workers are required to push the pipeline to adjust the alignment between the two pipelines, which is not only time-consuming and labor-intensive, but also greatly reduces the efficiency of drilling construction.

[0004] Therefore, a large-diameter drilling construction auxiliary device for thick sandstone aquifers is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a large-diameter drilling construction auxiliary device for thick sandstone aquifers.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a large-diameter drilling construction auxiliary device for a thick sandstone aquifer, comprising a fixed frame and a pair of mounting plates installed on a drilling machine crawling frame, wherein the mounting plates are fixedly connected to the rear side of the fixed frame, both ends of the side walls of the fixed frame are slidably connected with sliding blocks, the front sides of the sliding blocks are fixedly connected with semicircular rings, the tops of the semicircular rings are provided with T-slots, one of the T-slots is slidably connected with an arc-shaped T-block, the top of the arc-shaped T-block is fixedly connected with a top block, the side walls of the top blocks are fixedly connected with an electric telescopic cylinder, the output end of the electric telescopic cylinder passes through the side walls of the top blocks and is fixedly connected with an adjustment plate, the inner sides of the semicircular rings are provided with adjustment rings, the inner sides of the semicircular rings are provided with adjustment grooves, the bottom ends of the outer walls of the adjustment rings are fixedly connected with a moving ring, the sliding blocks are provided with an indented groove on the side close to each other, the inner sides of the grooves are slidably connected with a push plate, and a driving mechanism for simultaneously driving the two sliding blocks to move toward the middle is provided in the fixed frame.

[0007] In the above technical solution, further, the driving mechanism includes a driving motor, a bidirectional screw rod is rotatably connected to the inner side of the fixed frame, the driving motor is fixedly connected to the side wall of the fixed frame, the output end of the driving motor passes through the inner side of the fixed frame and is fixedly connected to the side wall of the bidirectional screw rod, both ends of the inner side of the fixed frame are slidably connected to driving blocks, the bidirectional screw rod is threaded through the inner wall of the driving block, and the side wall of the push plate extends out of the outer wall of the sliding block.

[0008] In the above technical solution, further, one of the semicircular ring side walls is provided with a limiting groove relative to the position below the T-slot, the inner side of the limiting groove is slidably connected to a limiting block, and the top of the limiting block extends to the inner side of the T-slot, a limiting spring is fixedly connected between the bottom end of the limiting groove and the bottom end of the limiting block, a release groove is provided on the side wall of the limit block, and the bottom end of the release groove is inclined, and the other semicircular ring side wall is fixedly connected with a right-angle block with an inclined surface relative to the bottom end of the release groove.

[0009] In the above technical solution, further, the movable ring is inserted into the inner side of the adjusting groove, and a plurality of return springs are fixedly connected at equal distances between the outer wall of the adjusting ring and the inner side of the semicircular ring.

[0010] In the above technical scheme, further, a scraper is provided at the bottom end of the adjusting ring, a U-shaped arc frame is slidably connected to the inner side of the groove, an arc plate is fixedly connected to the side wall of the scraper, and the arc plate is inserted into the inner side of the U-shaped arc frame, a pair of cleaning springs are fixedly connected between the bottom end of the U-shaped arc frame and the bottom end of the groove, upper guide rollers are staggered and rotatably connected to the upper end of the inner side of the groove, a lower guide roller is rotatably connected to the top of the groove, a pull rope is fixedly connected to the outer wall of the U-shaped arc frame, the other end of the pull rope first passes through one of the upper guide rollers from below and then passes through the other upper guide roller from above and is fixedly connected to the side wall of the push plate, a rear groove is opened on the side wall of the groove, and a pair of tensioning springs are fixedly connected between the rear groove and the side wall of the push plate.

[0011] In the above technical solution, further, the top of the scraper is fixedly connected to three round rods, and the tops of the three round rods are all arranged through the top of the adjustment ring, and an upper spring is fixedly connected between the outer wall of one of the round rods and the top of the adjustment ring.

[0012] In the above technical solution, further, an additional ring is provided on the inner side of the adjusting ring, a pair of upper mounting grooves are opened on the top of the adjusting ring, and the additional ring is installed on the inner side of the upper mounting groove by bolts.

[0013] In the above technical solution, further, a scraper ring is provided on the inner side of the scraper, lower mounting grooves are provided at both ends of the scraper, and the scraper ring is installed in the lower mounting groove by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can quickly clamp the adjusting ring on the outer wall of the pipeline by setting structures such as a fixed frame, a semicircular ring, an adjusting ring and an electric telescopic cylinder. Then, the position of the electric telescopic cylinder is adjusted by sliding an arc-shaped T-block, and the adjusting plate is moved to a position where the pipeline is offset and the pipeline protrudes below. The electric telescopic cylinder can be controlled to drive the adjusting plate to move, and then the pipeline is squeezed to align and position with the pipeline driven into the well below, thereby realizing rapid seam alignment of the pipeline, without the need for welders to push the pipeline for seam alignment, and without the need to hold it all the time, which greatly improves the drilling efficiency during the construction process.

[0016] 2. Through the cooperation between the driving mechanism and the scraper and other structures, the present invention can automatically drive the scraper ring to move downward after the adjustment ring is stuck on the outer wall of the pipeline and the seam with the lower pipeline is completed, so as to scrape off the mud between the two pipelines, avoid affecting the subsequent welding process, and further improve the drilling efficiency of the device.

[0017] 3. The present invention can replace the corresponding additional rings and scraper rings according to the size of the drilling pipe by setting up structures such as additional rings and scraper rings, so that pipes of different sizes can be quickly aligned, further improving the universal performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front three-dimensional structure of the auxiliary device of the present invention;

[0019] Figure 2 It is a rear perspective structural diagram of the semicircular ring and the driving mechanism of the present invention;

[0020] Figure 3 The appended Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the semicircular ring and the sliding block of the present invention;

[0022] Figure 5 The appended Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0023] Figure 6 The appended Figure 4 A schematic diagram of the partially enlarged structure at C in the middle;

[0024] Figure 7 It is a schematic diagram of the front full cutaway three-dimensional structure of the semicircular ring of the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the semicircular ring, the adjusting ring and the adding ring separated from each other in the present invention;

[0026] Fig. 9 It is a schematic diagram of the overall appearance structure of the scraper, U-shaped arc frame and push plate of the present invention.

[0027] In the figure: 1. fixed frame; 2. mounting plate; 3. sliding block; 4. semicircular ring; 5. T-slot; 6. arc-shaped T-block; 7. top block; 8. electric telescopic cylinder; 9. adjusting plate; 10. driving motor; 11. bidirectional screw rod; 12. driving block; 13. groove; 14. push plate; 15. limit block; 16. limit groove; 17. limit spring; 18. release groove; 19. right-angle block; 20. adjusting ring; 21. adjusting groove; 22. moving ring; 23. reset spring; 24. scraper; 25. U-shaped arc frame; 26. arc plate; 27. cleaning spring; 28. upper guide roller; 29. ​​lower guide roller; 30. pull rope; 31. tension spring; 32. round rod; 33. upper spring; 34. increase ring; 35. upper mounting groove; 36. scraper ring; 37. lower mounting groove. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Embodiment 1

[0031] In the existing drilling construction process, the construction of large-diameter deep wells is generally carried out outdoors in some areas to be constructed. Therefore, intelligent welding equipment cannot be used and can only be handled by manual welding. However, in the process of pipe docking, in order to ensure the quality of drilling, welding workers are required to push the pipes to adjust the alignment between the two pipes, which is not only time-consuming and labor-intensive, but also greatly reduces the efficiency of drilling construction.

[0032] like Figure 1-9 The device is a large-diameter drilling construction auxiliary device for thick sandstone aquifers, comprising a fixed frame 1 and a pair of mounting plates 2 mounted on a drilling machine crawler frame, wherein the mounting plates 2 are fixedly connected to the rear side of the fixed frame 1, the mounting plates 2 are mounted at the bottom end of the drilling machine crawler frame and are located at the connection between two pipes, both ends of the side wall of the fixed frame 1 are slidably connected with sliding blocks 3, the front sides of the sliding blocks 3 are fixedly connected with semicircular rings 4, and the two semicircular rings 4 are connected to form a complete circular ring, and the tops of the semicircular rings 4 are provided with T-slots 5, and an arc-shaped T-shaped block 6, the top of the arc-shaped T-shaped block 6 is fixedly connected with a top block 7, the side wall of the top block 7 is fixedly connected with an electric telescopic cylinder 8, the output end of the electric telescopic cylinder 8 passes through the side wall of the top block 7 and is fixedly connected with an adjustment plate 9, the inner side of the semicircular ring 4 is provided with an adjustment ring 20, the inner side of the semicircular ring 4 is provided with an adjustment groove 21, the bottom end of the outer wall of the adjustment ring 20 is fixedly connected with a moving ring 22, the sliding blocks 3 are provided with an inward groove 13 on the side close to each other, and the inner side of the groove 13 is slidably connected with a push plate 14, and a driving mechanism that drives the two sliding blocks 3 to move toward the middle at the same time is provided in the fixed frame 1;

[0033] The movable ring 22 is inserted into the inner side of the adjusting groove 21. The setting of the adjusting groove 21 can limit the sliding of the movable ring 22 and the adjusting ring 20, so as to prevent the adjusting ring 20 from falling off downward. A plurality of return springs 23 are fixedly connected equidistantly between the outer wall of the adjusting ring 20 and the inner side of the semicircular ring 4. The setting of a plurality of return springs 23 can ensure that the adjusting ring 20 always maintains a central position, so as to ensure that the adjusting ring 20 can be quickly clamped on the outer wall of the pipeline.

[0034] The driving mechanism includes a driving motor 10, a bidirectional screw rod 11 is rotatably connected to the inner side of the fixed frame 1, the driving motor 10 is fixedly connected to the side wall of the fixed frame 1, the output end of the driving motor 10 passes through the inner side of the fixed frame 1 and is fixedly connected to the side wall of the bidirectional screw rod 11, both ends of the inner side of the fixed frame 1 are slidably connected to the driving block 12, the bidirectional screw rod 11 penetrates through the thread and is connected to the inner side wall of the driving block 12, and the side wall of the push plate 14 extends out of the outer wall of the sliding block 3;

[0035] During large-diameter drilling, a pilot hole is constructed first. The construction method adopts the composite drill bit drilling process, uses wireless drilling and drilling to monitor the hole inclination and correct it, and then adopts graded hole expansion construction. First, the composite drill bit is used to open the hole in the opening section, and then five combined roller bits are used to expand the hole in five stages to make the hole diameter reach the required specifications. The spiral pipe is put into the hole, cement is cemented and waited for setting. The composite drill bit is used to construct the pilot hole in the opening section, and then four composite drill bits or combined roller bits are used in turn to expand the hole in four stages to make the hole diameter finally reach the designed hole diameter and hole depth reach the designed hole depth. After drilling, the working pipe is put into the hole, cement is cemented and waited for setting;

[0036] However, in the process of lowering the working pipe, when it is necessary to weld and fix the two pipes, the driving motor 10 can be controlled to start and drive the bidirectional screw rod 11 to rotate, thereby driving the two threaded driving blocks 12 to move toward the middle, and then the driving block 12 will push the push plate 14 to move, and then pull the sliding block 3 and the semicircular ring 4 to move under the elastic force of the tensioning spring 31 (because the sliding of the sliding block 3 is not restricted at this time, the tensioning spring 31 will not be stretched), and then the two adjusting rings 20 are clamped on the outer wall of the upper pipe under the drive of the driving motor 10. At the same time, the two sliding blocks 3 are fitted together. At this time, the driving motor 10 can be controlled to stop running, and finally the eccentric position of the upper pipe and the lower pipe is observed;

[0037] Then, the top block 7 is pushed to drive the arc-shaped T-block 6 to slide on the inner side of the T-slot 5, and drive the electric telescopic cylinder 8 and the adjusting plate 9 to move, and the adjusting plate 9 is moved to the eccentric protruding position of the upper pipe. Then, the electric telescopic cylinder 8 can be controlled to start and drive the adjusting plate 9 to move, thereby pushing the adjusting ring 20 to move through the adjusting plate 9. Since the positions of the semicircular ring 4, the electric telescopic cylinder 8 and the sliding block 3 are fixed on the drilling rig through the fixing frame 1 and the mounting plate 2, the adjusting plate 9 will push the adjusting ring 20 to drive the upper pipe to move, so that the upper pipe can be aligned with the lower pipe (if other positions of the upper pipe are offset after the adjusting plate 9 is extended, the electric telescopic cylinder 8 can be driven to move by pulling the top block 7, the extrusion position of the adjusting plate 9 can be changed, and the position of the pipe can be further adjusted). At the same time, the moving ring 22 is driven to move on the inner side of the adjusting groove 21, and the reset spring 23 is stretched or compressed, so as to realize the rapid alignment between the pipes, and then the welding gun can be used to weld the pipes.

[0038] Embodiment 2

[0039] On the basis of the above embodiment, it is found during use that when the semicircular ring 4 is opened, the electric telescopic cylinder 8 and the arc-shaped T-block 6 are easy to fall off from the T-slot 5. In order to solve the above problem, the above embodiment is further improved.

[0040] In order to improve the stability of the device, a limit groove 16 is provided on the side wall of one of the semicircular rings 4 relative to the position below the T-slot 5, and a limit block 15 is slidably connected to the inner side of the limit groove 16, and the top of the limit block 15 extends to the inner side of the T-slot 5, and a limit spring 17 is fixedly connected between the bottom end of the limit groove 16 and the bottom end of the limit block 15, and a release groove 18 is provided on the side wall of the limit block 15, and the bottom end of the release groove 18 is inclined, and a right-angle block 19 with an inclined surface is fixedly connected to the side wall of the other semicircular ring 4 relative to the bottom end of the release groove 18;

[0041] When the driving motor 10 starts to drive the two semicircular rings 4 to move toward the middle and merge together, the end of the right-angle block 19 located on the side wall of the semicircular ring 4 will squeeze the inclined surface at the bottom of the release groove 18, and then the driving motor 10 drives the two semicircular rings 4 to continue to move toward the middle, thereby making the limit block 15 slide downward and compress the limit spring 17, so that the limit block 15 slides out of the T-slot 5, and the sliding restriction of the arc T-block 6 can be released, which not only prevents the arc T-block 6 from falling out of the T-slot 5 due to the vibration generated by the drilling process of the drilling rig when the semicircular ring 4 is opened, affecting the stability of the device, but also can release the restriction when the two semicircular rings 4 are docked, ensuring that the adjustment plate 9 can squeeze and adjust any part of the outer wall of the pipeline to improve the stability of the device, and finally when the driving motor 10 reverses to open the semicircular ring 4, the above operation is repeated in reverse to reset (and after the electric telescopic cylinder 8 is used, it needs to return to the semicircular ring 4 with a limit), thereby realizing the restriction on the position of the arc T-block 6 in the T-slot 5.

[0042] Embodiment 3

[0043] On the basis of the above embodiment, it was found during use that during the drilling process, the mud sprayed from underground is easy to adhere to the pipe, thereby affecting the subsequent welding. In order to solve the above problem, the above embodiment was further improved.

[0044] In order to further improve the drilling efficiency of the device, a scraper 24 is provided at the bottom end of the adjusting ring 20, and a U-shaped arc frame 25 is slidably connected to the inner side of the groove 13. It should be noted that the inner side of the protruding semicircular ring 4 on the inner side of the U-shaped arc frame 25 is arranged to prevent the arc plate 26 from sliding out of the U-shaped arc frame 25 when the scraper 24 slides to the other side. The side wall of the scraper 24 is fixedly connected with the arc plate 26, and the arc plate 26 is plugged into the inner side of the U-shaped arc frame 25. Through the arrangement of the U-shaped arc frame 25 and the arc plate 26, the adjusting ring 20 can be pushed by the electric telescopic cylinder 8 to move. During the process of adjusting the pipeline, since the round rod 32 on the scraper 24 is penetrated and arranged on the adjusting ring 20, the adjusting ring 20 will drive the scraper 24 to move at the same time when it moves, and then drive the moving ring 22 to move in the U-shaped arc frame 25, thereby ensuring that the U-shaped arc frame 25 can always drive the arc plate 26 and the scraper 24 to move up and down;

[0045] A pair of cleaning springs 27 are fixedly connected between the bottom end of the U-shaped arc frame 25 and the bottom end of the groove 13. The setting of the cleaning springs 27 facilitates the U-shaped arc frame 25 to be quickly reset. The upper and lower ends of the inner side of the groove 13 are staggered and rotatably connected with upper guide rollers 28, which guide the sliding direction of the pull rope 30. The top of the groove 13 is rotatably connected with a lower guide roller 29, which guides the lateral sliding direction of the pull rope 30 to prevent it from falling off the upper guide roller 28. A pull rope 30 is fixedly connected to the outer wall of the U-shaped arc frame 25, and the other end of the pull rope 30 first passes through one of the upper guide rollers 28 from below and then passes through the other upper guide roller 28 from above and is fixedly connected to the side wall of the push plate 14. A rear groove is opened on the side wall of the groove 13, and a pair of tension springs 31 are fixedly connected between the rear groove and the side wall of the push plate 14. By setting the tension springs 31, the tension on the push plate 14 can be increased to prevent the push plate 14 from pulling the pull rope 30 to drive the scraper 24 to move downward when the semicircular rings 4 are not clamped together;

[0046] The top of the scraper 24 is fixedly connected with three round rods 32. The arrangement of the round rods 32 guides the sliding of the scraper 24, ensuring that the scraper 24 can move according to the adjustment ring 20 to avoid being stuck at the connection between the two pipes. The tops of the three round rods 32 are all set through the top of the adjustment ring 20. An upper spring 33 is fixedly connected between the outer wall of one of the round rods 32 and the top of the adjustment ring 20. The arrangement of the upper spring 33 can increase the pulling force on the scraper 24 to ensure that the scraper 24 is close to the bottom of the adjustment ring 20 when not in use.

[0047] After the electric telescopic cylinder 8 is controlled to start and align the welds between the two pipes, the driving motor 10 can continue to be controlled to start and drive the bidirectional screw rod 11 to rotate. At this time, since the two sliding blocks 3 are squeezed together, the sliding block 3 and the semicircular ring 4 cannot continue to move, so that the driving block 12 will push the push plate 14 to continue to slide in the groove 13 and gradually stretch the tensioning spring 31. At this time, the push plate 14 will drive the pull rope 30 to move, and then under the guidance of the upper guide roller 28 and the lower guide roller 29, the pull rope 30 pulls the U-shaped arc frame 25 to slide downward in the groove 13 and gradually compress the cleaning spring 27. However, since the arc plate 26 is inserted in the U-shaped arc frame 25 at this time, the arc plate 26 and the scraper 24 will be driven to move downward at the same time under the pulling force of the U-shaped arc frame 25, and the round rod 32 will be driven to move downward, and the upper spring 33 will be gradually compressed, so that the upper The mud on the outer wall of the pipe is scraped off, and then under the continued drive of the drive motor 10, the scraper 24 is moved down to the specified position to scrape off the silt on the outer wall of the lower pipe to avoid the silt and water between the pipes causing defects such as pores and slag inclusions in the weld after welding. After the cleaning is completed, the drive motor 10 is controlled to reverse and repeat the above operation in the reverse direction to drive the push plate 14 and the U-shaped arc frame 25 to reset (there is no need to drive the sliding block 3 to reset. A program button control can be added here, and the program can be set according to the driving distance of the bidirectional screw rod 11 to ensure the normal operation of the device). Finally, the connection between the two pipes can be welded (it should be noted that the sliding block 3 will not hinder the normal welding of the welding gun. When welding next to the sliding block 3, the welding gun can be tilted for welding), thereby scraping off the mud between the two pipes to avoid affecting the subsequent welding process.

[0048] Embodiment 4

[0049] On the basis of the above embodiment, it is found during use that during the drilling process, pipes of different sizes are used according to usage requirements, but the present structure can only be used for pipes of the same size. To solve the above problem, the above embodiment is further improved.

[0050] In order to improve the universal performance of the device, an additional ring 34 is provided inside the adjusting ring 20, and a pair of upper mounting grooves 35 are provided at the top of the adjusting ring 20. The additional ring 34 is installed inside the upper mounting grooves 35 by bolts;

[0051] A scraper ring 36 is provided inside the scraper 24, and lower mounting grooves 37 are provided at both ends of the scraper 24. The scraper ring 36 is installed in the lower mounting groove 37 by bolts.

[0052] When constructing deep wells of different diameters and needing to change the clamping size of the pipe, first use a tool to remove the bolts on the increasing ring 34, then remove the increasing ring 34, and then place the increasing ring 34 that matches the construction pipe in the adjusting ring 20, and use the tool to rotate in the reverse direction to tighten the bolts, and then use the tool to remove the bolts on the scraper ring 36, and then take out the scraper ring 36 and replace it with the scraper ring 36 that matches the construction pipe, and place the scraper ring 36 on the inner side of the scraper 24, and use the tool to rotate in the reverse direction to tighten the bolts, and then the replacement of the clamping parts and the cleaning parts can be completed, and then the pipes of different sizes can be quickly aligned, further improving the universal performance of the device.

[0053] The basic principles, main features and advantages of the present invention are shown and described above.

[0054] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A large-diameter drilling construction auxiliary device for thick sandstone aquifers, characterized by: The invention comprises a fixed frame (1) and a pair of mounting plates (2) mounted on a drilling machine crawling frame, wherein the mounting plates (2) are fixedly connected to the rear side of the fixed frame (1), both ends of the side wall of the fixed frame (1) are slidably connected to sliding blocks (3), the front sides of the sliding blocks (3) are fixedly connected to semicircular rings (4), the top ends of the semicircular rings (4) are provided with T-shaped grooves (5), one of the T-shaped grooves (5) is slidably connected to an arc-shaped T-shaped block (6), the top end of the arc-shaped T-shaped block (6) is fixedly connected to a top block (7), and the side wall of the top block (7) is fixedly connected to an electric telescopic cylinder. (8), the output end of the electric telescopic cylinder (8) passes through the side wall of the top block (7) and is fixedly connected to an adjustment plate (9), the inner side of the semicircular ring (4) is provided with an adjustment ring (20), the inner side of the semicircular ring (4) is provided with an adjustment groove (21), the bottom end of the outer wall of the adjustment ring (20) is fixedly connected to a moving ring (22), the adjacent sides of the sliding blocks (3) are provided with an inwardly recessed groove (13), the inner side of the groove (13) is slidably connected to a push plate (14), and the fixed frame (1) is provided with a driving mechanism for simultaneously driving the two sliding blocks (3) to move toward the middle.

2. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 1 is characterized by: The driving mechanism comprises a driving motor (10), a bidirectional screw rod (11) rotatably connected to the inner side of the fixed frame (1), the driving motor (10) being fixedly connected to the side wall of the fixed frame (1), the output end of the driving motor (10) passing through the inner side of the fixed frame (1) being fixedly connected to the side wall of the bidirectional screw rod (11), both ends of the inner side of the fixed frame (1) being slidably connected to a driving block (12), the bidirectional screw rod (11) passing through a thread and being connected to the inner side wall of the driving block (12), and the side wall of the push plate (14) extending out of the outer wall of the sliding block (3).

3. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 1 is characterized by: A limiting groove (16) is provided on the side wall of one of the semicircular rings (4) relative to the position below the T-shaped groove (5); a limiting block (15) is slidably connected to the inner side of the limiting groove (16); the top of the limiting block (15) extends to the inner side of the T-shaped groove (5); a limiting spring (17) is fixedly connected between the bottom end of the limiting groove (16) and the bottom end of the limiting block (15); a release groove (18) is provided on the side wall of the limiting block (15); and the bottom end of the release groove (18) is inclined; and a right-angle block (19) with an inclined surface is fixedly connected to the side wall of the other semicircular ring (4) relative to the bottom end of the release groove (18).

4. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 1 is characterized by: The movable ring (22) is inserted into the inner side of the adjusting groove (21), and a plurality of return springs (23) are fixedly connected at equal distances between the outer wall of the adjusting ring (20) and the inner side of the semicircular ring (4).

5. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 1 is characterized by: The bottom end of the adjusting ring (20) is provided with a scraper (24), the inner side of the groove (13) is slidably connected to a U-shaped arc frame (25), the side wall of the scraper (24) is fixedly connected to an arc plate (26), and the arc plate (26) is plugged into the inner side of the U-shaped arc frame (25), a pair of cleaning springs (27) are fixedly connected between the bottom end of the U-shaped arc frame (25) and the bottom end of the groove (13), and the upper and lower ends of the inner side of the groove (13) are staggered and rotatably connected to upper guide rollers ( 28), the top of the groove (13) is rotatably connected to a lower guide roller (29), the outer wall of the U-shaped arc frame (25) is fixedly connected to a pull rope (30), the other end of the pull rope (30) first passes through one of the upper guide rollers (28) from below and then passes through the other upper guide roller (28) from above and is fixedly connected to the side wall of the push plate (14), the side wall of the groove (13) is provided with a rear groove, and a pair of tension springs (31) are fixedly connected between the rear groove and the side wall of the push plate (14).

6. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 5 is characterized by: The top of the scraper (24) is fixedly connected to three round rods (32), and the tops of the three round rods (32) are all arranged through the top of the adjustment ring (20), and an upper spring (33) is fixedly connected between the outer wall of one of the round rods (32) and the top of the adjustment ring (20).

7. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 1 is characterized by: An additional ring (34) is provided inside the adjusting ring (20), a pair of upper mounting grooves (35) are provided at the top of the adjusting ring (20), and the additional ring (34) is installed inside the upper mounting grooves (35) by means of bolts.

8. The large-diameter drilling construction auxiliary device for thick sandstone aquifers according to claim 5 is characterized by: A scraper ring (36) is provided inside the scraper (24), lower mounting grooves (37) are provided at both ends of the scraper (24), and the scraper ring (36) is installed in the lower mounting groove (37) by means of bolts.

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