Large-diameter drilling inner pipe replacing device

Abstract

The utility model relates to the technical field of pipeline replacement, and provides a large-diameter drilling inner pipe replacement device which comprises a quick-change piece, the quick-change piece comprises a lifting clamping piece, the lifting clamping piece is fixedly arranged on an inner pipe, a lifting hole is formed by a first holding piece and a second holding piece, and the inner pipe is located in the lifting hole. The upper portion of the first holding piece and the upper portion of the second holding piece abut against the bottom of the lifting clamping piece, the two lifting pieces are arranged on the first holding piece and the second holding piece respectively, and lifting holes are formed in the lifting pieces. By means of the technical scheme, the problem that in the prior art, a large-diameter drilling inner pipe is inconvenient to replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline replacement, and specifically, to a device for replacing an inner pipe in a large-diameter borehole. Background Art

[0002] Large-diameter blanking holes, with advantages such as high conveying efficiency, low cost, and little interference, have become the main measures to ensure mine safety, relieve the auxiliary transportation pressure of the mine, and simplify the underground production system. They are widely used for mine blanking and are playing an increasingly important role in mine construction and production operations. Large-diameter boreholes are gradually becoming a common configuration in mines and are being used more and more widely.

[0003] After the blanking hole is put into use, the inner pipe will be continuously worn due to blanking. After the wear reaches the designed thickness, the inner pipe needs to be replaced, that is, the worn old inner pipe is pulled out and a new inner pipe is lowered to extend the service life of the blanking hole and improve the utilization efficiency of the blanking hole. Summary of the Utility Model

[0004] The utility model provides a device for replacing an inner pipe in a large-diameter borehole, which solves the problem of inconvenient replacement of the inner pipe in a large-diameter borehole in the related art.

[0005] The technical solution of the utility model is as follows:

[0006] A device for replacing an inner pipe in a large-diameter borehole for replacing the inner pipe 1 includes a quick-change part 6, and the quick-change part 6 includes

[0007] a lifting clamping part 601, which is fixedly arranged on the inner pipe 1,

[0008] a first clamping part 602 and a second clamping part 603, the first clamping part 602 and the second clamping part 603 form a lifting hole 605, the inner pipe 1 is located in the lifting hole 605, and the upper parts of the first clamping part 602 and the second clamping part 603 are both in contact with the bottom of the lifting clamping part 601,

[0009] lifting parts 604, there are two lifting parts 604, which are respectively arranged on the first clamping part 602 and the second clamping part 603, and the lifting parts 604 have a lifting hole 605.

[0010] Furthermore, it includes

[0011] a replacement frame body 2, which is arranged above the blanking hole 3, the replacement frame body 2 has a replacement hole 201, and the aperture of the replacement hole 201 is larger than the aperture of the blanking hole 3,

[0012] a support fixture 4, which is arranged on the replacement frame body 2 and is located above the blanking hole 3, the support fixture 4 has a support hole 401, the support hole 401 is coaxially arranged with the replacement hole 201 and the blanking hole 3, and the support fixtures 4 are arranged in several layers in sequence from top to bottom,

[0013] The cutting fixture 5 is arranged on the replacement frame 2 and is located between the support fixture 4 and the blanking hole 3.

[0014] Furthermore, the cutting fixture 5 includes

[0015] A support table 501 is arranged on the replacement frame 2. The support table 501 has a first fixing hole 502.

[0016] A cutting baffle 503 is arranged on the support table 501 in a lifting manner. The cutting baffle 503 has a second fixing hole 504.

[0017] A lifting driving member 505 is arranged on the support table 501 to drive the cutting baffle 503 to lift.

[0018] Furthermore, the support fixture 4 includes

[0019] A first clamping part 402 and a second clamping part 403. The first clamping part 402 and the second clamping part 403 are hinged to each other at one end. The first clamping part 402 and the second clamping part 403 form a support hole 401. The inner wall of the support hole 401 has a tooth part 404. Both the other ends of the first clamping part 402 and the second clamping part 403 have through holes 405.

[0020] A fixing rope 406 passes through the through hole 405 of the first clamping part 402 and the through hole 405 of the second clamping part 403.

[0021] A locking member 407. One end of the fixing rope 406 is arranged on the locking member 407. The locking member 407 has a locking hole. The other end of the fixing rope 406 passes through the locking hole.

[0022] Furthermore, the side parts of the first clamping part 402 and the second clamping part 403 have side support holes 408, and further include

[0023] Fixing rings 409 are arranged on the replacement frame 2 and are several in number.

[0024] Support ropes 410 pass through the fixing rings 409. One end of each support rope 410 is fixedly arranged in the side support hole 408 for the support and fixation of the support fixture 4.

[0025] A rope winder 411. The support ropes 410 are wound around the rope winder 411. The rope winder 411 is used to control the tension adjustment of the support ropes 410.

[0026] Furthermore, the replacement frame 2 includes

[0027] Expansion rods 202 are arranged in a circular arrangement. One end of each expansion rod 202 is swingably arranged around the periphery above the blanking hole 3.

[0028] The inner tube passes through the ring 203, and the other end of the telescopic rod 202 is hinged to the inner tube passing through the ring 203.

[0029] The wire threading ring 204, several wire threading rings 204 are sequentially arranged on the telescopic rod 202, and the support rope 410 passes through the wire threading ring 204 and then bypasses the fixed ring 409.

[0030] The working principle and beneficial effects of the present utility model are as follows:

[0031] In this utility model, the lifting clip, as the core component of the quick-change part, is directly fixed on the inner pipe and is used to connect the inner pipe with the first clamping part and the second clamping part, so as to realize the stable lifting, lowering and positioning of the inner pipe. The lifting clip is designed with a fixing structure matching the surface of the inner pipe to ensure the stable connection between the inner pipe and the lifting clip during the lifting process and prevent the sliding or falling off of the inner pipe. The lifting clip is tightly combined with the inner pipe by welding or other means to ensure that the inner pipe can move synchronously with the lifting clip during the lifting operation. The first clamping part and the second clamping part together form a lifting clamping part, which is used to hold the inner pipe to form a lifting hole to ensure the stability and safety of the inner pipe during the lifting process. The first clamping part and the second clamping part are designed with lifting holes matching the diameter of the inner pipe, which can tightly hold the inner pipe to ensure stability during the lifting process. The upper parts of the two clamping parts are in contact with the bottom of the lifting clip to form a stable support structure. The first clamping part and the second clamping part cooperate with each other to form an enclosure for the inner pipe, and through the connection of the lifting clip, the lifting and positioning of the inner pipe are realized. The lifting part, as the execution element of the lifting operation, is responsible for connecting with lifting equipment such as cranes and winches through the lifting hole to realize the lifting and positioning of the inner pipe. There are two lifting parts, which are respectively arranged on the first clamping part and the second clamping part. Each lifting part has a lifting hole for connecting with the hook or rope of the lifting equipment. After the lifting hole of the lifting part is connected with the lifting equipment, the inner pipe is lifted through the pulling force of the lifting equipment to ensure the smoothness and safety of the lifting process. The overall working process: First, fix the lifting clip on the inner pipe to ensure the tight connection between the lifting clip and the inner pipe. Surround the inner pipe with the first clamping part and the second clamping part to form a lifting hole, ensure that the inner pipe is located in the lifting hole, and the upper parts of the first clamping part and the second clamping part are in contact with the bottom of the lifting clip to form a stable support structure. Arrange the lifting parts on the first clamping part and the second clamping part respectively, and connect with the lifting equipment through the lifting holes of the lifting parts. Through the pulling force of the lifting equipment, through the coordinated action of the lifting parts, the lifting clamping part and the lifting clip, the smooth lifting and positioning of the inner pipe are realized, and the extraction operation of the inner pipe is completed. Through the lifting and fixing design of the quick-change part, the device realizes the efficient and safe extraction of the inner pipe in the large-diameter blanking hole. Similarly, when installing the inner pipe, the quick-change part can also quickly install the descending inner pipe and lower it into the blanking port. During the actual construction process, the quick-change part is mainly used to realize the installation of the inner pipe. Adjacent two inner pipes can be quickly welded by using a cutting fixture at the blanking port position through the quick-change part, and after welding, quick installation and construction are realized, improving the construction efficiency and construction safety. Brief Description of the Drawings

[0032] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in combination with the drawings in the preferred embodiments.

[0033] Figure 1 It is a schematic structural diagram of the present utility model;

[0034] Figure 2 This is a schematic structural diagram of another perspective of the present utility model;

[0035] Figure 3 It is Figure 2 a schematic structural diagram of A in

[0036] Figure 4 It is Figure 2 a schematic structural diagram of B in

[0037] Figure 5 It is Figure 2 a schematic structural diagram of C in

[0038] In the figure: inner tube - 1, replacement frame - 2, replacement hole - 201, telescopic rod - 202, inner tube threading ring - 203, threading ring - 204, blanking hole - 3, support fixture - 4, support hole - 401, first clamping part - 402, second clamping part - 403, tooth part - 404, perforation - 405, fixing rope - 406, locking part - 407, side support hole - 408, fixing ring - 409, support rope - 410, rope winder - 411, cutting fixture - 5, support table - 501, first fixing hole - 502, cutting baffle - 503, second fixing hole - 504, lifting driving part - 505, quick replacement part - 6, lifting clamping part - 601, first holding part - 602, second holding part - 603, lifting part - 604, lifting hole - 605. Specific embodiments

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other embodiments can be obtained.

[0040] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0041] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0042] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0043] Referring to Figures 1 to 5 , for the embodiment of the present utility model, a large-diameter drilling inner pipe replacement device is proposed, which includes a quick-change part 6. The quick-change part 6 includes a lifting clamping part 601, and the lifting clamping part 601 is fixedly arranged on the inner pipe 1. The first clamping part 602 and the second clamping part 603 form a lifting hole 605, and the inner pipe 1 is located in the lifting hole 605. The upper parts of the first clamping part 602 and the second clamping part 603 are both in contact with the bottom of the lifting clamping part 601. There are two lifting parts 604, which are respectively arranged on the first clamping part 602 and the second clamping part 603, and the lifting parts 604 have a lifting hole 605.

[0044] In this embodiment, the lifting card component 601, as the core component of the quick-change component 6, is directly fixed on the inner pipe 1 and is used to connect the inner pipe 1 with the first clamping component 602 and the second clamping component 603 to achieve the stable lifting, lowering and positioning of the inner pipe 1. The lifting card component 601 is designed with a fixing structure matching the surface of the inner pipe 1 to ensure the stable connection between the inner pipe 1 and the lifting card component 601 during the lifting process and prevent the sliding or falling off of the inner pipe 1. The lifting card component 601 is tightly combined with the inner pipe 1 by welding or other means to ensure that the inner pipe 1 can move synchronously with the lifting card component 601 during the lifting operation. The first clamping component 602 and the second clamping component 603 together form a lifting clamping component, which is used to hold the inner pipe 1 to form a lifting hole 605 to ensure the stability and safety of the inner pipe 1 during the lifting process. The first clamping component 602 and the second clamping component 603 are designed with a lifting hole 605 matching the diameter of the inner pipe 1, which can tightly hold the inner pipe 1 to ensure stability during the lifting process. The upper parts of the two clamping components are in contact with the bottom of the lifting card component 601 to form a stable support structure. The first clamping component 602 and the second clamping component 603 cooperate with each other to form an enclosure for the inner pipe 1, and through the connection of the lifting card component 601, the lifting and positioning of the inner pipe 1 are achieved. The lifting component 604, as the execution element of the lifting operation, is responsible for connecting with lifting equipment such as a crane and a winch through the lifting hole 605 to achieve the lifting and positioning of the inner pipe 1. Two lifting components 604 are designed and are respectively arranged on the first clamping component 602 and the second clamping component 603. Each lifting component 604 has a lifting hole 605 for connecting with the hook or rope of the lifting equipment. After the lifting hole 605 of the lifting component 604 is connected with the lifting equipment, the inner pipe 1 is lifted through the pulling force of the lifting equipment to ensure the smoothness and safety of the lifting process. The overall working process: First, the lifting card component 601 is fixed on the inner pipe 1 to ensure the tight connection between the lifting card component 601 and the inner pipe 1. The first clamping component 602 and the second clamping component 603 are arranged around the inner pipe 1 to form a lifting hole 605 to ensure that the inner pipe 1 is located in the lifting hole 605, and the upper parts of the first clamping component 602 and the second clamping component 603 are in contact with the bottom of the lifting card component 601 to form a stable support structure. The lifting components 604 are respectively arranged on the first clamping component 602 and the second clamping component 603, and are connected with the lifting equipment through the lifting holes 605 of the lifting components 604. Through the pulling force of the lifting equipment and the synergistic effect of the lifting components 604, the lifting clamping component and the lifting card component 601, the smooth lifting and positioning of the inner pipe 1 are achieved, and the pulling-out operation of the inner pipe 1 is completed. Through the lifting and fixing design of the quick-change component 6, the device realizes the efficient and safe pulling-out of the inner pipe 1 in the large-diameter blanking hole 3. Similarly, when installing the inner pipe 1, the quick-change component 6 can also quickly install the descending inner pipe 1 and lower it into the blanking port. During the actual construction process, the quick-change component 6 is mainly used to realize the installation of the inner pipe 1. Adjacent two inner pipes 1 can be quickly welded by using the cutting fixture 5 at the blanking port position through the quick-change component 6, and after welding, quick installation and construction are realized, improving the construction efficiency and construction safety.

[0045] Further, it further includes a replacement frame body 2, the replacement frame body 2 is arranged above the blanking hole 3, the replacement frame body 2 has a replacement hole 201, the aperture of the replacement hole 201 is larger than the aperture of the blanking hole 3, the support fixture 4 is arranged on the replacement frame body 2 and is located above the blanking hole 3, the support fixture 4 has a support hole 401, the support hole 401 is coaxially arranged with the replacement hole 201 and the blanking hole 3, the support fixtures 4 are several arranged in sequence from top to bottom, and the cutting fixture 5 is arranged on the replacement frame body 2 and is located between the support fixture 4 and the blanking hole 3.

[0046] In this embodiment, the function of the replacement frame 2 is to serve as a support platform during the removal of the inner tube 1. The replacement frame 2 has a replacement hole 201, which is located directly above the blanking hole 3, and its designed aperture is larger than that of the blanking hole 3 to ensure sufficient space for subsequent cutting and pipe pulling operations. The support fixture 4 is located on the replacement frame 2 and acts directly on the inner tube 1 to fix and support the inner tube 1, ensuring the relative position of the inner tube 1 is fixed during the cutting and pulling processes, and avoiding displacement or movement of the inner tube 1 caused by external forces, thus preventing potential hazards and risks caused by improper fixation of the inner tube 1 during actual processing. The support fixtures 4 are arranged one above the other in sequence, and each fixture is provided with a support hole 401 that is coaxial with the replacement hole 201 and the blanking hole 3. The positioning of the support hole 401 can ensure the straightness of the inner tube 1 during cutting or pulling, reducing the operation difficulty. By adjusting the position of the support fixture 4, inner tubes 1 of different lengths can be accommodated to ensure the smooth progress of the cutting and pulling processes. The cutting fixture 5 is located between the support fixture 4 and the blanking hole 3 and is mainly used to cut the connection between two adjacent non-damaged inner tubes 1. When the two adjacent inner tubes 1 cannot be separated, it can quickly cut and then quickly pull out the next section of the inner tube 1. By quickly pulling out the non-damaged inner tube 1, the construction efficiency is improved. When it is necessary to pull out the damaged and blocked inner tube 1 in the blanking hole 3, first place the replacement frame 2 above the blanking hole 3 to ensure that the replacement hole 201 is aligned with the blanking hole 3, reserving space for subsequent operations. By adjusting the support fixture 4, after the support fixture 4 is centered with the inner tube 1, use other equipment to pull up the inner tube 1. During the pulling process, the support fixture 4 contacts and fixes the inner tube 1 in sequence to ensure the stability of the inner tube 1 during subsequent operations. When the adjacent inner tube 1 is too long, the cutting fixture 5 fixes the inner tube 1, cuts the inner tube 1 after fixation, and after cutting, the inner tube 1 can be placed at the designated location more stably, avoiding safety hazards caused by the excessive length of the inner tube 1. Pull out the inner tube 1 section by section until all the inner tubes 1 are successfully removed.Compared with the prior art, the design of the supporting fixture 4 ensures that in the actual operation process, if the inner tube 1 is damaged or broken in the air, especially when the pulled out inner tube 1 and the unpulled inner tube 1 are broken under the action of traction during the traction process of the relevant equipment, the supporting fixture 4 can support and fix the pulled out part of the inner tube 1, so as to avoid the pulled out inner tube 1 from falling and causing damage to personnel and equipment after breaking, thereby improving the safety during the operation. The design of the cutting fixture 5 is to fix and protect the inner tube 1 if it needs to be disconnected during the construction process, especially when the middle part of a single inner tube 1 needs to be disconnected, because the pulled out inner tube 1 is the inner tube 1 that has been used for a period of time, and there is a greater probability that more inner tubes 1 will appear. Wear. In order to avoid breakage in the parts with greater wear during the pulling process, cutting will be performed in the parts with greater wear. The prior art has not taken this into account. The inner tube 1 may break during the pulling process and require secondary salvage. The design of the cutting fixture 5 can fix the inner tube 1 when any part of the inner tube 1 needs to be cut. The fixed inner tube 1 is ensured not to shake due to cutting under the action of the cutting fixture 5 and several supporting fixtures 4, further improving the safety during the construction process. Several supporting fixtures 4 arranged in sequence can also fix and buffer the inner tube 1 when the end of the inner tube 1 falls off during pulling, avoiding accidents caused by the inner tube 1 not being fixed in place. In summary, the device for pulling out the damaged blocked tube 1 of the large-diameter feeding hole 3 improves the safety during the construction process by fixing the inner tube 1 in different states, avoiding construction delays caused by the inner tube 1 not being fixed in place, and improving construction efficiency.

[0047] Furthermore, the cutting fixture 5 includes a support platform 501, which is arranged on the replacement frame 2, and the support platform 501 has a first fixing hole 502. The cutting baffle 503 is raised and lowered on the support platform 501, and the cutting baffle 503 has a second fixing hole 504. The lifting drive 505 is arranged on the support platform 501 to drive the cutting baffle 503 to rise and fall.

[0048] In this embodiment, the cutting fixture 5 includes a support table 501 and a cutting baffle 503. The support table 501 is fixed on the replacement frame 2 and is used to carry the cutting baffle 503 and the lifting drive member 505 to ensure the stability of the entire cutting fixture 5. The first fixing hole 502 is used to cooperate with the fixing of the inner tube 1 during the subsequent cutting process of the inner tube 1 to ensure the accuracy of the cutting position. The cutting baffle 503 is driven by the lifting drive member 505 to achieve clamping and fixing of different positions of the inner tube 1. The distance between the support table 501 and the cutting baffle 503 is adjusted by the lifting drive member 505 to adapt to different types of cutting fixtures 5. The cutting baffle 503 is designed with a second fixing hole 504, which cooperates with the first fixing hole 502 on the support table 501 to ensure the stability and positioning accuracy of the cutting baffle 503 during the cutting process. In addition, the lifting design of the cutting baffle 503 enables it to adapt to the cutting requirements of inner tubes 1 with different diameters and positions, improving the adaptability of the device. Driven by the lifting drive member 505, the cutting baffle 503 can move up and down to align with the cutting position of the inner tube 1, and a cutting operation is performed by an external cutting tool such as a cutting saw, a laser cutter, etc. or a manual cutting tool. The lifting drive member 505 can be an electric, pneumatic or hydraulic drive system, and it is required to have sufficient thrust and accuracy to ensure the stable lifting of the cutting baffle 503. By controlling the output of the lifting drive member 505, the position of the cutting baffle 503 can be precisely adjusted to achieve adaptability to different cutting positions of the inner tube 1 and different cutting requirements of tools. When the inner tube 1 needs to be cut, first, the support table 501 is fixed on the replacement frame 2 to ensure that the cutting position is aligned with the cutting point of the inner tube 1. Then, the inner tube 1 is fixed through the cooperation of the first fixing hole 502 and the second fixing hole 504 to ensure the stability of the cutting part of the inner tube 1 during the cutting process. At the same time, ensure that the lower section of the inner tube 1 after cutting is easy to pull out. Under the positioning of the cutting baffle 503, an external cutting tool is used to cut the inner tube 1 until the entire cutting process is completed. When cutting the inner tube 1 in the prior art, the method often adopted is to cut the inner tube 1 below the blanking port, and then lift the inner tube 1 after cutting. If the inner tube 1 gets stuck with the blanking port during the pulling process, or serious damage is found during the pulling process, at this time, the inner tube 1 needs to be pulled out for treatment, or put back into the blanking hole 3 for secondary cutting and then pulled out. However, pulling out the inner tube 1 at this time has greater potential safety hazards. If the inner tube 1 is put back into the blanking hole 3, the inner tube 1 will rotate during the secondary cutting and is not easy to fix. The design of the cutting fixture 5 is that when the inner tube 1 is found to be damaged, the inner tube 1 can be firmly fixed and then cut, and the lower section of the cut inner tube 1 is fixed on the support table 501, which is convenient for the operator to take out the inner tube 1, reduces the labor intensity of the operator, reduces the possible safety hazards, and improves the on-site construction efficiency.

[0049] Furthermore, the cutting fixture 5 includes a support table 501 which is arranged on the replacement frame body 2. The support table 501 has a first fixing hole 502. A cutting baffle 503 is arranged on the support table 501 in a lifting manner. The cutting baffle 503 has a second fixing hole 504. A lifting driving member 505 is arranged on the support table 501 to drive the cutting baffle 503 to lift.

[0050] In this embodiment, the cutting fixture 5 includes a support table 501 and a cutting baffle 503. The support table 501 is fixed on the replacement frame 2 and is used to carry the cutting baffle 503 and the lifting drive member 505 to ensure the stability of the entire cutting fixture 5. The first fixing hole 502 is used to cooperate with the fixing of the inner tube 1 during the subsequent cutting process of the inner tube 1 to ensure the accuracy of the cutting position. The cutting baffle 503 is driven by the lifting drive member 505 to achieve clamping and fixing of different positions of the inner tube 1. The distance between the support table 501 and the cutting baffle 503 is adjusted by the lifting drive member 505 to adapt to different types of cutting fixtures 5. The cutting baffle 503 is designed with a second fixing hole 504, which cooperates with the first fixing hole 502 on the support table 501 to ensure the stability and positioning accuracy of the cutting baffle 503 during the cutting process. In addition, the lifting design of the cutting baffle 503 enables it to adapt to the cutting requirements of inner tubes 1 with different diameters and positions, improving the adaptability of the device. Driven by the lifting drive member 505, the cutting baffle 503 can move up and down to align with the cutting position of the inner tube 1, and a cutting operation is performed by an external cutting tool such as a cutting saw, a laser cutter, etc. or a manual cutting tool. The lifting drive member 505 can be an electric, pneumatic or hydraulic drive system, and needs to have sufficient thrust and accuracy to ensure the stable lifting of the cutting baffle 503. By controlling the output of the lifting drive member 505, the position of the cutting baffle 503 can be accurately adjusted to achieve adaptability to different cutting positions of the inner tube 1 and different cutting requirements of tools. When the inner tube 1 needs to be cut, first, the support table 501 is fixed on the replacement frame 2 to ensure that the cutting position is aligned with the cutting point of the inner tube 1. Then, the inner tube 1 is fixed through the cooperation of the first fixing hole 502 and the second fixing hole 504 to ensure the stability of the cutting part of the inner tube 1 during the cutting process. At the same time, ensure that the lower section of the inner tube 1 after cutting is easy to pull out. Under the positioning of the cutting baffle 503, an external cutting tool is used to cut the inner tube 1 until the entire cutting process is completed. When cutting the inner tube 1 in the prior art, the common method is to cut the inner tube 1 below the blanking port, and then lift the inner tube 1 after cutting. If the inner tube 1 gets stuck with the blanking port during the lifting process, or serious damage is found during the lifting process, at this time, the inner tube 1 needs to be pulled out for treatment, or put back into the blanking hole 3 for secondary cutting and then lifted. However, pulling out the inner tube 1 at this time has relatively large potential safety hazards. If the inner tube 1 is put back into the blanking hole 3, the inner tube 1 will rotate during the secondary cutting and is not easy to fix. The design of the cutting fixture 5 is that when the inner tube 1 is found to be damaged, the inner tube 1 can be firmly fixed and then cut, and the lower section of the cut inner tube 1 is fixed on the support table 501, which is convenient for the operator to take out the inner tube 1, reduces the labor intensity of the operator, reduces the possible safety hazards, and improves the on-site construction efficiency.

[0051] Further, the support fixture 4 includes a first clamping portion 402 and a second clamping portion 403. The first clamping portion 402 and the second clamping portion 403 are hinged to each other at one end. The first clamping portion 402 and the second clamping portion 403 form a support hole 401. The inner wall of the support hole 401 has teeth 404. The other ends of both the first clamping portion 402 and the second clamping portion 403 have through holes 405. A fixing rope 406 passes through the through hole 405 of the first clamping portion 402 and the through hole 405 of the second clamping portion 403. One end of the fixing rope 406 is arranged on a locking member 407. The locking member 407 has a locking hole, and the other end of the fixing rope 406 passes through the locking hole.

[0052] In this embodiment, the first clamping part 402 and the second clamping part 403 are the main structures that constitute the support fixture 4. By being hinged to each other, an adjustable support hole 401 is formed for fixing the inner pipe 1. The fixed manner of the hinge connection forms an openable and closable structure, which facilitates the quick fixation after the inner pipe 1 passes through the support hole 401. The inner wall of the support hole 401 is designed with teeth 404 to increase the friction with the surface of the inner pipe 1 and ensure the stability of the inner pipe 1 during the cutting and pulling-out processes. The pulled-out part of the inner pipe 1 is a waste pipe fitting in actual production. At this time, to ensure the safety of on-site construction, the teeth 404 will bite into the outer wall of the pipe wall of the inner pipe 1 to ensure a firm fixing effect and avoid potential safety hazards caused by the dropping of the inner pipe 1 during the pulling-out process. The first clamping part 402 and the second clamping part 403 can be opened and closed relative to each other to adapt to inner pipes 1 with different diameters and ensure the stable fixation of the inner pipe 1 in the support hole 401. The fixing rope 406 is used to connect the first clamping part 402 and the second clamping part 403. Through the cooperation of the locking member 407, the fastening and loosening of the fixture are realized. The fixing rope 406 needs to have sufficient strength and wear resistance to ensure that it will not break or wear during the operation. The rope body passes through the through holes 405 of the first clamping part 402 and the second clamping part 403 to tightly connect the two parts. Through the cooperation of the fixing rope 406 and the locking member 407, the fastening of the first clamping part 402 and the second clamping part 403 can be realized to ensure the stability of the inner pipe 1 in the support hole 401. The locking member 407, as the locking device of the fixing rope 406, is used to adjust and fix the tension of the fixing rope 406 to ensure the stability of the support fixture 4. The locking member 407 is designed with a locking hole. One end of the fixing rope 406 is fixed on the locking member 407, and the other end passes through the locking hole. By adjusting the length and tension of the fixing rope 406, the fastening of the support fixture 4 is realized. By adjusting the length of the fixing rope 406 passing through the locking hole, the tension between the first clamping part 402 and the second clamping part 403 can be changed, thereby realizing the fastening or loosening of the inner pipe 1. When using the support fixture 4, open the first clamping part 402 and the second clamping part 403 of the support fixture 4, let the inner pipe 1 pass through the support hole 401, and make the first clamping part 402 and the second clamping part 403 approach each other to ensure that the inner pipe 1 contacts and bites into the teeth 404 on the inner wall of the support hole 401. Pass the fixing rope 406 through the through holes 405 of the first clamping part 402 and the second clamping part 403, adjust the length of the fixing rope 406 to ensure that the first clamping part 402 and the second clamping part 403 are closely attached to the inner pipe 1. Pass the other end of the fixing rope 406 through the locking hole of the locking member 407, and adjust the tension of the fixing rope 406 through the locking member 407 to realize the stable fixation of the inner pipe 1. Check the fixing state of the support fixture 4 to ensure that the inner pipe 1 remains stable during the subsequent cutting and pulling-out processes.Through the design of the support fixture 4, during the actual construction process, once the inner pipe 1 is pulled out and shakes or breaks, the support fixture 4 can firmly fix the inner pipe 1 on the plumb line where the material discharge port is located, so as to avoid potential safety hazards caused by the falling of the materials adhered to the periphery of the inner pipe 1. At the same time, when the inner pipe 1 is always on the plumb line where the material discharge port is located, the risk of the inner pipe 1 falling is also reduced.

[0053] Furthermore, the side parts of the first clamping part 402 and the second clamping part 403 are provided with side support holes 408, and further include fixing rings 409. The fixing rings 409 are arranged on the replacement frame body 2 and are in plurality. The support ropes 410 pass through the fixing rings 409, and one end of each support rope 410 is fixedly arranged in the side support hole 408 for supporting and fixing the frame body. The support ropes 410 are wound around a rope reel 411, and the rope reel 411 is used to control the tension adjustment of the support ropes 410.

[0054] In this embodiment, the fixing ring 409 is arranged on the replacement frame 2 and is used for the bypass of the support rope 410. The external support and positioning of the support fixture 4 are realized through the support rope 410. There are several fixing rings 409, which are distributed at appropriate positions on the replacement frame 2 to ensure the uniform distribution of the support rope 410 and the stable fixation of the support fixture 4. Through the connection between the fixing ring 409 and the support rope 410, the weight and external force of the support fixture 4 can be evenly dispersed onto the replacement frame 2, improving the stability of the overall structure. The support rope 410, as the link connecting the fixing ring 409 and the support fixture 4, plays a key role in transmitting external forces and controlling the position of the support fixture 4. The support rope 410 passes through the fixing ring 409, with one end fixed in the side support hole 408 of the support fixture 4 and the other end wound around the rope reel 411, forming a closed-loop support system. Through the control of the rope reel 411, the tension of the support rope 410 can be adjusted, thereby realizing the fine adjustment of the position of the support fixture 4 and ensuring the stability of the support fixture 4 during the cutting and pulling-out processes. The rope reel 411, as the control center of the tension of the support rope 410, is responsible for adjusting the tension of the support rope 410 to achieve precise control of the support fixture 4. The rope reel 411 is designed with a manual or electric adjustment mechanism, which can adjust the winding amount of the support rope 410 according to needs, and then control the tension of the support rope 410. By rotating the rope reel 411, the winding amount of the support rope 410 can be increased or decreased, thereby adjusting the tension of the support rope 410 and realizing the rising, falling or fine adjustment of the position of the support fixture 4. The working process: Pass one end of the support rope 410 through the fixing ring 409 and fix the other end in the support hole 401 of the support fixture 4 to ensure the connection between the support fixture 4 and the replacement frame 2. Adjust the tension of the support rope 410 through the rope reel 411 to make the support fixture 4 reach the predetermined position and ensure the stability of the inner pipe 1 in the support hole 401. Under the stable support of the support fixture 4, perform the cutting and pulling-out operations of the inner pipe 1. During this period, the tension of the support rope 410 can be finely adjusted through the rope reel 411 to ensure the smooth progress of the operation. After the operation is completed, release the tension of the support rope 410 through the rope reel 411 to release the fixation of the support fixture 4 and complete one operation cycle. Through the coordinated action of the fixing ring 409, the support rope 410 and the rope reel 411, the device realizes the precise control and stable support of the support fixture 4, improving the safety and efficiency of the operation of pulling out the damaged and blocked inner pipe in the large-diameter blanking hole. In addition, the rope reel 411 has several winding shafts, which are arranged in sequence. When the previous winding shaft rotates several circles, the next winding shaft rotates following the rotation of the previous winding shaft. By adjusting the number of rotation circles of different winding shafts, different support fixtures 4 are sequentially clamped at different heights of the inner pipe 1. Controlling different support fixtures 4 by the same rope reel 411 reduces the cost of the equipment and also reduces the space usage. The support fixtures 4 are sequentially clamped and rise with the inner pipe 1, ensuring the stability of the inner pipe 1 during the pulling-out process and reducing the possibility of accidents.

[0055] Further, the replacement frame 2 includes telescopic rods 202. The telescopic rods 202 are arranged in a circle, and one end of each telescopic rod is swingably arranged around the periphery above the blanking hole 3. The other end of the telescopic rod 202 is hinged to the inner pipe through-ring 203. A number of wire passing rings 204 are sequentially arranged on the telescopic rod 202. The support rope 410 passes through the wire passing rings 204 and then bypasses the fixed ring 409.

[0056] In this embodiment, the telescopic rod 202 serves as the main support structure of the replacement frame 2 to ensure the stability and adjustability of the entire device. A number of telescopic rods 202 are arranged in a circular pattern. One end is swingably disposed around the periphery above the blanking hole 3, and the other end is hinged to the inner tube through-ring 203 to form an adjustable support structure. The design of the telescopic rod 202 enables the entire device to adapt to the blanking holes 3 with different lengths of the inner tube 1 while ensuring sufficient supporting force. The telescopic and swing capabilities of the telescopic rod 202 enable the device to adjust the support range and angle according to actual needs to ensure the stability of the inner tube 1 during cutting and pulling out. The inner tube through-ring 203, as the terminal connection point of the telescopic rod 202, is used to fix the other end of the telescopic rod 202, and its main function is to provide a passing path for the lifting rope. The inner tube through-ring 203 is designed as an annular structure and is connected to the telescopic rod 202 by a hinge, which can adapt to the swing and telescoping of the telescopic rod 202 to ensure the structural stability of the entire device. The hinge connection between the inner tube through-ring 203 and the telescopic rod 202 ensures that the adjustment of the telescopic rod 202 does not affect the guiding path of the lifting rope, guaranteeing the stable transmission of the support rope 410 between the fixed ring 409 and the support fixture 4. The threading ring 204 is disposed on the telescopic rod 202 to guide the support rope 410, ensuring the smooth transmission of the support rope 410 between the fixed ring 409 and the telescopic rod 202 and preventing the rope from being twisted or knotted during movement. A number of threading rings 204 are arranged in sequence on the telescopic rod 202 to form a guiding path for the support rope 410, ensuring the straightness and stability of the support rope 410 during transmission. After passing through the threading ring 204, the support rope 410 bypasses the fixed ring 409. Through the guiding action of the threading ring 204, the friction and resistance of the support rope 410 during transmission can be reduced, ensuring the uniform distribution of the tension of the support rope 410, thereby achieving stable support for the support fixture 4. For the overall working process, one end of the telescopic rod 202 is swingably disposed around the periphery above the blanking hole 3, and the other end is hinged to the inner tube through-ring 203 to form a support structure surrounding the blanking hole 3. The support rope 410 sequentially passes through the threading ring 204, bypasses the fixed ring 409, and is finally fixed in the support hole 401 of the support fixture 4 to form a closed-loop support system. According to the actual position and size of the inner tube 1, the telescopic and swing of the telescopic rod 202 are adjusted to ensure the uniform distribution of the tension of the support rope 410 and the stable fixation of the support fixture 4. With the stable support of the support fixture 4, the cutting and pulling out operations of the inner tube 1 are carried out. During this period, the angle of the telescopic rod 202 can be finely adjusted as needed to ensure the smooth progress of the operation.Through the synergistic effect of the telescopic rod 202, the inner tube through-ring 203 and the wire threading ring 204, the device realizes the precise guiding of the support rope 410 and the stable support of the entire device, improves the efficiency and safety of the operation of pulling out the damaged and blocked inner tube in the large-diameter blanking hole. After the inner tube 1 is pulled out, the telescopic rod 202 retracts, the locking member 407 is opened, and the swinging of the inner tube 1 is restricted by the action of the inner tube through-ring 203 and the lifting member. After the inner tube through-ring 203 reaches the lowest point, the inner tube 1 is placed at the designated position.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A large-diameter borehole inner tube replacement device, used for replacing an inner tube (1), characterized in that: It comprises a quick-change component (6), wherein the quick-change component (6) comprises a lifting clamp (601), wherein the lifting clamp (601) is fixedly arranged on the inner tube (1), A first holding piece (602) and a second holding piece (603), wherein the first holding piece (602) and the second holding piece (603) form a lifting hole (605), the inner tube (1) is located in the lifting hole (605), and the upper parts of the first holding piece (602) and the second holding piece (603) are both in contact with the bottom of the lifting clamp (601). A lifting member (604), wherein the number of the lifting members (604) is two, and the lifting members (604) are respectively arranged on the first holding member (602) and the second holding member (603), and the lifting members (604) have lifting holes (605).

2. A large-diameter borehole inner tube replacement device according to claim 1, characterized in that: include A replacement frame (2), the replacement frame (2) being arranged above the material discharge hole (3), the replacement frame (2) having a replacement hole (201), the diameter of the replacement hole (201) being larger than the diameter of the material discharge hole (3), A supporting fixture (4), the supporting fixture (4) being arranged on the replacement frame (2) and located above the material discharge hole (3), the supporting fixture (4) having a supporting hole (401), the supporting hole (401) being coaxially arranged with the replacement hole (201) and the material discharge hole (3), and the supporting fixture (4) being a plurality of supporting fixtures (4) arranged in sequence up and down, A cutting fixture (5), wherein the cutting fixture (5) is arranged on the replacement frame (2) and is located between the supporting fixture (4) and the material discharge hole (3).

3. A large-diameter borehole inner tube replacement device according to claim 2, characterized in that: The cutting fixture (5) comprises A support platform (501), the support platform (501) being arranged on the replacement frame (2), the support platform (501) having a first fixing hole (502), a cutting baffle (503), the cutting baffle (503) being arranged on the support platform (501) in a lifting manner, the cutting baffle (503) having a second fixing hole (504), A lifting drive member (505), wherein the lifting drive member (505) is arranged on the support platform (501) and drives the cutting baffle (503) to rise and fall.

4. A large-diameter borehole inner tube replacement device according to claim 3, characterized in that: The supporting fixture (4) comprises A first clamping part (402) and a second clamping part (403), wherein the first clamping part (402) and the second clamping part (403) are hinged to each other at one end, the first clamping part (402) and the second clamping part (403) form the support hole (401), the inner wall of the support hole (401) has a toothed part (404), and the other ends of the first clamping part (402) and the second clamping part (403) both have a through hole (405), a fixing rope (406), the fixing rope (406) passing through the through hole (405) of the first clamping part (402) and the through hole (405) of the second clamping part (403), A locking member (407), one end of the fixing rope (406) being arranged on the locking member (407), the locking member (407) having a locking hole, and the other end of the fixing rope (406) passing through the locking hole.

5. A large-diameter borehole inner tube replacement device according to claim 4, characterized in that: The first clamping part (402) and the second clamping part (403) have side support holes (408) on their sides, and further include A fixing ring (409), wherein the fixing ring (409) is arranged on the replacement frame (2), and there are a plurality of fixing rings (409). a support rope (410), wherein the support rope (410) passes through the fixing ring (409), one end of which is fixedly disposed in the side support hole (408) and is used for supporting and fixing the support clamp (4). A rope reel (411), the support rope (410) being wound around the rope reel (411), the rope reel (411) being used to control the tension adjustment of the support rope (410).

6. A large-diameter borehole inner tube replacement device according to claim 5, characterized in that: The replacement frame (2) comprises A telescopic rod (202), wherein the telescopic rod (202) is arranged in a circle and one end is swingably arranged around the top of the feeding hole (3). The inner tube wears a ring (203), and the other end of the telescopic rod (202) is hinged on the inner tube wears a ring (203). A threading ring (204), wherein a plurality of the threading rings (204) are sequentially arranged on the telescopic rod (202), and the support rope (410) passes through the threading ring (204) and then passes around the fixing ring (409).

Images