A cutting device for trenchless pipeline repair

Abstract

The present invention belongs to the technical field of pipeline repair, and discloses a cutting device for trenchless pipeline repair, including a pipeline body, and also includes: a clamping assembly, the clamping assembly is fixed on the outside of the pipeline body; a stabilizing assembly, the stabilizing assembly is arranged on the clamping assembly. The present invention clamps and fixes the pipeline body through the clamping assembly and the stabilizing assembly, the cutting device is docked with the connecting plate, and the cutting device is pushed to cut and disconnect the pipeline body. During the pushing process, the sliding rod rotates 180 degrees along the arc rod, and the first protrusion and the first limit block are abutted against the limit. At this time, the arc rod and the cutting device rotate in the opposite direction to reset, and then rotate in the opposite direction 180 degrees to achieve complete disconnection of the pipeline body. By docking the cutting device with the connecting plate, the sliding rod rotates along the arc rod to drive the cutting device to cut the pipeline body, ensuring the flatness of the cutting surface of the pipeline body, thereby reducing the subsequent processing steps of the pipeline body.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline repair, in particular to a cutting device for trenchless pipeline repair. Background Art

[0002] Trenchless pipeline repair technology is a technology that repairs and reinforces underground pipelines without excavating or excavating the ground as little as possible. This technology is mainly aimed at the renovation of old and outdated pipeline facilities, aiming to meet the needs of structural renewal and expansion, while minimizing damage to adjacent facilities, roads and the environment, reducing additional project investment, and improving construction efficiency and service performance. Since there are rivers or existing buildings on the old pipeline, it is inconvenient to excavate and re-lay the pipeline. Construction pits need to be dug at both ends and the middle part of the pipeline, and the repaired pipe is disconnected. An endoscopic crawling robot is placed inside the pipeline to inspect and determine the internal situation of the pipeline. However, in the existing process of disconnecting the pipeline, the pipeline is usually disconnected by manual handheld cutting equipment. Due to the limited space of the construction pit, the pipeline cutting process is prone to uneven pipeline incision, thereby increasing the subsequent processing steps of the pipeline. Therefore, a cutting device for trenchless pipeline repair is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a cutting device for trenchless pipeline repair, which solves the problem that the existing manual handheld cutting equipment is prone to cause uneven pipeline incision during pipeline disconnection, thereby increasing the subsequent processing steps of the pipeline.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a cutting device for trenchless pipeline repair, comprising a pipeline body, and further comprising;

[0005] A clamping assembly, wherein the clamping assembly is fixedly mounted on the outside of the pipeline body;

[0006] A stabilizing component, the stabilizing component is arranged on the clamping component, and the stabilizing component is used to clamp the pipeline body through the docking component;

[0007] A cutting assembly, the cutting assembly is installed at both ends of the clamping assembly, and the cutting assembly is located between the clamping assembly and the stabilizing assembly;

[0008] Wherein, the cutting assembly comprises an arc-shaped rod fixedly mounted at both ends of the clamping assembly, a second limit block is arranged at one end of the inner periphery of the arc-shaped rod, and a first limit block is arranged at the other end of the outer periphery of the arc-shaped rod;

[0009] The outer part of the arc-shaped rod is slidably engaged with a sliding rod, and the side of the sliding rod is fixed with a connecting plate for installing a cutting device;

[0010] The inner periphery of the sliding rod is provided with a second protrusion, and the outer periphery of the sliding rod is fixed with a first protrusion;

[0011] The arc rod and the sliding rod are both in the shape of a semicircular hoop;

[0012] The sliding rod rotates 180 degrees along the arc rod, and the sliding rod and the arc rod form a ring;

[0013] When the sliding rod is rotated forward 180 degrees, the first protrusion abuts against the first limit block, and when the sliding rod is rotated reversely 180 degrees, the second protrusion abuts against the second limit block. During the rotation, the pipe body is disconnected by the cutting device.

[0014] Preferably, the clamping assembly comprises a first fixing frame, and both ends of the bottom of the first fixing frame are hinged with clamps, and the clamps clamp and fix the pipeline body by bolts.

[0015] Preferably, the stabilizing assembly comprises a connecting member fixedly mounted on the top of the first fixing frame, a connecting frame is fixedly mounted on the top of the connecting member, and a second fixing frame is welded to the connecting frame;

[0016] The second fixing frame is in the shape of a semicircular hoop, the first fixing frame clamps the pipeline body, and the second fixing frame fits the periphery of the pipeline body.

[0017] Preferably, clamping blocks are movably engaged at both ends of the second fixing frame;

[0018] The clamping block keeps overlapping with the inner wall of the second fixing frame.

[0019] Preferably, a stabilizing rod is fixedly mounted on the top of the first fixing frame, and a transmission plate is provided on the outer movable sleeve of the stabilizing rod;

[0020] The connecting piece is provided with a through slot for the transmission plate to pass through and limit the transmission plate.

[0021] Preferably, the transmission plate is connected to the two clamping blocks respectively through a connecting plate;

[0022] The two clamping blocks are initially located in the second fixing frame, the second fixing frame is fitted with the pipe body, the transmission plate moves downward and pushes the two clamping blocks out of the second fixing frame through the connecting plate, and the opening of the second fixing frame is reduced to clamp the pipe body.

[0023] Preferably, the docking assembly includes a second connecting rod sleeved on the first fixing frame, a limiting ring is fixedly mounted on the middle portion of the second connecting rod, and the limiting ring contacts the top of the first fixing frame.

[0024] Preferably, a hand wheel is movably mounted on the top of the transmission plate, the second connecting rod passes through the transmission plate, and the hand wheel and the second connecting rod are threadedly sleeved;

[0025] In an initial state, the hand wheel is located at the upper end of the second connecting rod, and the clamping block is located in the second fixing frame.

[0026] Preferably, a limiting groove is provided on the outside of the second connecting rod, a transmission rod is movably sleeved inside the second connecting rod, a hanging rod is fixed on the top of the transmission rod, and a spring block movably engaged in the limiting groove is provided inside the first fixing frame.

[0027] Preferably, the opposite ends of the two spring blocks are in a beveled shape;

[0028] The spring block is initially engaged in the limiting groove, and the top of the transmission rod is in an arc shape.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention clamps and fixes the pipe body through the clamping assembly and the stabilizing assembly, the cutting device is docked with the connecting plate, and the cutting device is pushed to cut and disconnect the pipe body. During the pushing process, the sliding rod rotates 180 degrees along the arc rod, and the first protrusion is limited by the first limit block. At this time, the arc rod and the cutting device rotate in the opposite direction to reset, and then rotate in the opposite direction 180 degrees to achieve complete disconnection of the pipe body. By docking the cutting device with the connecting plate, the sliding rod rotates along the arc rod to drive the cutting device to cut the pipe body, thereby ensuring the flatness of the cut surface of the pipe body, thereby reducing the subsequent processing steps of the pipe body.

[0031] The present invention clamps the cut and disconnected section of the pipeline body through the clamping assembly, and clamps the fixed section through the stabilizing assembly. At this time, the crane is docked with the hanging rod, and the hanging rod and the transmission rod are pulled upward. The transmission rod moves upward to push the spring block out of the limiting groove. At this time, the second connecting rod loses the limit of the spring block and moves upward, and at the same time drives the transmission plate, the connecting plate and the clamping block to shrink into the second fixing frame. The second fixing frame and the clamping block can be disconnected from the clamping of the pipeline body, and the clamping assembly, the stabilizing assembly and the disconnected section can be lifted out of the construction pit through the docking assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the cooperation structure between the cutting device and the pipeline of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall appearance structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the disassembled structure of the cutting assembly of the present invention;

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0036] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0037] Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0038] Figure 7 This is a schematic diagram of the disassembled structure of the docking assembly of the present invention;

[0039] Figure 8 It is a schematic diagram of the cross-sectional structure of the stabilizing assembly of the present invention;

[0040] Fig. 9 This is a schematic diagram of the disassembled structure of the stabilizing component of the present invention.

[0041] In the figure: 1. pipe body; 2. clamping assembly; 21. first fixing frame; 22. clamping hoop; 3. cutting assembly; 31. arc rod; 32. sliding rod; 33. first limit block; 34. first protrusion; 35. second limit block; 36. connecting plate; 37. second protrusion; 4. stabilizing assembly; 41. second fixing frame; 42. clamping block; 43. connecting plate; 44. transmission plate; 45. connecting frame; 46. connecting piece; 47. through groove; 48. stabilizing rod; 5. docking assembly; 51. second connecting rod; 52. limit ring; 53. limit groove; 54. transmission rod; 55. hanging rod; 56. handwheel; 57. spring block. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 9 As shown, the present invention provides a cutting device for trenchless pipeline repair, comprising a pipeline body 1, and further comprising;

[0044] A clamping assembly 2, wherein the clamping assembly 2 is fixedly mounted on the outside of the pipeline body 1;

[0045] A stabilizing component 4, which is disposed on the clamping component 2 and is used to clamp the pipeline body 1 through the docking component 5;

[0046] A cutting assembly 3, which is installed at both ends of the clamping assembly 2, and is located between the clamping assembly 2 and the stabilizing assembly 4;

[0047] The cutting assembly 3 includes an arc-shaped rod 31 fixedly mounted at both ends of the clamping assembly 2, a second stopper 35 is disposed at one end of the inner periphery of the arc-shaped rod 31, and a first stopper 33 is disposed at the other end of the outer periphery of the arc-shaped rod 31;

[0048] The outer part of the arc rod 31 is slidably engaged with a sliding rod 32, and the side of the sliding rod 32 is fixed with a connecting plate 36 for installing a cutting device;

[0049] The inner periphery of the sliding rod 32 is provided with a second protrusion 37, and the outer periphery of the sliding rod 32 is fixedly provided with a first protrusion 34;

[0050] The arc rod 31 and the sliding rod 32 are both semicircular hoop-shaped;

[0051] The sliding rod 32 rotates 180 degrees along the arc rod 31, and the sliding rod 32 and the arc rod 31 form a ring;

[0052] The sliding rod 32 rotates forward 180 degrees and the first protrusion 34 abuts against the first limit block 33. The sliding rod 32 rotates backward 180 degrees and the second protrusion 37 abuts against the second limit block 35. During the rotation, the pipe body 1 is disconnected by the cutting device.

[0053] The equipment is placed in the construction pit, and the pipe body 1 is clamped and fixed by the clamping assembly 2 and the stabilizing assembly 4. The cutting equipment is docked with the connecting plate 36, and the cutting equipment is pushed to cut and disconnect the pipe body 1. During the pushing process, the sliding rod 32 rotates 180 degrees along the arc rod 31, and the first protrusion 34 and the first limit block 33 are abutted against the limit. At this time, the arc rod 31 and the cutting equipment rotate in the opposite direction to reset, and then rotate in the opposite direction 180 degrees to achieve complete disconnection of the pipe body 1. By docking the cutting equipment with the connecting plate 36, the sliding rod 32 rotates along the arc rod 31 to drive the cutting equipment to cut the pipe body 1, thereby ensuring the flatness of the cut surface of the pipe body 1, thereby reducing the subsequent processing steps of the pipe body 1;

[0054] Since the cutting assembly 3 is located between the clamping assembly 2 and the stabilizing assembly 4, the disconnected part of the pipe body 1 is fixedly clamped by the clamping assembly 2, and the disconnected part is supported by the stabilizing assembly 4, so that the disconnected part and the pipe body 1 are always kept in a horizontal state, avoiding the other end of the pipe body 1 being difficult to cut due to gravity after being disconnected. The cutting equipment adopts flame cutting.

[0055] like Figure 4-Figure 9 As shown, the clamping assembly 2 includes a first fixing frame 21, and both ends of the bottom of the first fixing frame 21 are hinged with clamps 22, and the clamps 22 clamp and fix the pipe body 1 through bolts;

[0056] The stabilizing assembly 4 includes a connecting member 46 fixedly mounted on the top of the first fixing frame 21, a connecting frame 45 is fixedly mounted on the top of the connecting member 46, and a second fixing frame 41 is welded to the connecting frame 45;

[0057] The second fixing frame 41 is in the shape of a semicircular hoop, the first fixing frame 21 clamps the pipe body 1, and the second fixing frame 41 fits the periphery of the pipe body 1;

[0058] The two ends of the second fixing frame 41 are movably engaged with clamping blocks 42;

[0059] The clamping block 42 keeps overlapping with the inner wall of the second fixing frame 41;

[0060] A stabilizing rod 48 is fixedly mounted on the top of the first fixing frame 21, and a transmission plate 44 is movably sleeved outside the stabilizing rod 48;

[0061] The connecting member 46 is provided with a through slot 47 for the transmission plate 44 to pass through and limit the transmission plate 44.

[0062] The transmission plate 44 is connected to the two clamping blocks 42 respectively through the connecting plate 43;

[0063] The two clamping blocks 42 are initially located in the second fixing frame 41, and the second fixing frame 41 is fitted with the pipeline body 1. The transmission plate 44 moves downward and pushes the two clamping blocks 42 out of the second fixing frame 41 through the connecting plate 43, thereby narrowing the opening of the second fixing frame 41 to clamp the pipeline body 1.

[0064] The docking assembly 5 includes a second connecting rod 51 sleeved on the first fixing frame 21, a limiting ring 52 is fixedly installed in the middle of the second connecting rod 51, and the limiting ring 52 contacts the top of the first fixing frame 21;

[0065] A hand wheel 56 is movably mounted on the top of the transmission plate 44, and the second connecting rod 51 passes through the transmission plate 44. The hand wheel 56 and the second connecting rod 51 are threadedly sleeved.

[0066] In the initial state, the hand wheel 56 is located at the upper end of the second connecting rod 51, and the clamping block 42 is located in the second fixing frame 41;

[0067] The second connecting rod 51 has a limiting groove 53 formed on its outside, a transmission rod 54 movably sleeved inside the second connecting rod 51, a hanging rod 55 fixedly mounted on the top of the transmission rod 54, and a spring block 57 movably engaged in the limiting groove 53 is provided inside the first fixing frame 21;

[0068] The opposite ends of the two spring blocks 57 are cut-angled;

[0069] The spring block 57 is initially engaged in the limiting groove 53 , and the top of the transmission rod 54 is in an arc shape.

[0070] The clamp 22 clamps the pipe body 1 by bolts, and the spring clamp block 57 is initially engaged in the limit groove 53. The hand wheel 56 is turned to drive the transmission plate 44 to move downward along the external thread groove of the second connecting rod 51, and the clamp block 42 is pushed into the second fixing frame 41 through the connecting plate 43 to reduce the opening of the second fixing frame 41. The clamp block 42 and the second fixing frame 41 clamp the pipe body 1. At this time, the pipe body 1 can be cut by the cutting assembly 3.

[0071] After the cutting is completed, the disconnected section is clamped by the clamping assembly 2, and the fixed section is clamped by the stabilizing assembly 4. At this time, the crane is docked with the hanging rod 55, and the hanging rod 55 and the transmission rod 54 are pulled upward. The transmission rod 54 moves upward to push the spring block 57 out of the limiting groove 53. At this time, the second connecting rod 51 loses the limit of the spring block 57 and moves upward, and at the same time drives the transmission plate 44, the connecting plate 43 and the clamping block 42 to shrink into the second fixing frame 41. The second fixing frame 41 and the clamping block 42 can be disconnected from the pipe body 1, and the clamping assembly 2, the stabilizing assembly 4 and the disconnected section can be lifted out of the construction pit through the docking assembly 5.

[0072] The working principle and use process of the present invention:

[0073] The equipment is placed in the construction pit, the clamp 22 clamps the pipeline body 1 through the bolts, and the spring clamp block 57 is initially engaged in the limit groove 53. The transmission plate 44 is driven downward along the external thread groove of the second connecting rod 51 by turning the hand wheel 56, and the clamp block 42 is pushed out of the second fixing frame 41 through the connecting plate 43 to reduce the opening of the second fixing frame 41. The clamp block 42 and the second fixing frame 41 clamp the pipeline body 1, and the cutting device is docked with the connecting plate 36, and the cutting device is pushed to cut and disconnect the pipeline body 1. During the pushing process, the sliding rod 32 rotates 180 degrees along the arc rod 31, and the first protrusion 34 and the first limit block 33 are contacted and limited. At this time, the arc rod 31 and the cutting device rotate in the opposite direction to reset, and then rotate in the opposite direction 180 degrees to achieve complete disconnection of the pipeline body 1. By docking the cutting device with the connecting plate 36, the sliding rod 32 rotates along the arc rod 31 to drive the cutting device to cut the pipeline body 1;

[0074] Since the cutting assembly 3 is located between the clamping assembly 2 and the stabilizing assembly 4, the disconnected portion of the pipe body 1 is fixedly clamped by the clamping assembly 2, and the disconnected portion is supported by the stabilizing assembly 4, so that the disconnected portion and the pipe body 1 are always kept in a horizontal state, so as to avoid the other end of the pipe body 1 being difficult to cut due to the influence of gravity after being disconnected;

[0075] After the cutting is completed, the disconnected section is clamped by the clamping assembly 2, and the fixed section is clamped by the stabilizing assembly 4. At this time, the crane is docked with the hanging rod 55, and the hanging rod 55 and the transmission rod 54 are pulled upward. The transmission rod 54 moves upward to push the spring block 57 out of the limiting groove 53. At this time, the second connecting rod 51 loses the limit of the spring block 57 and moves upward, and at the same time drives the transmission plate 44, the connecting plate 43 and the clamping block 42 to shrink into the second fixing frame 41. The second fixing frame 41 and the clamping block 42 can be disconnected from the pipe body 1, and the clamping assembly 2, the stabilizing assembly 4 and the disconnected section can be lifted out of the construction pit through the docking assembly 5.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for trenchless pipeline repair, comprising a pipeline body (1), characterized in that: Also includes; A clamping assembly (2), wherein the clamping assembly (2) is fixedly mounted on the outside of the pipeline body (1); A stabilizing component (4), the stabilizing component (4) being arranged on the clamping component (2), and the stabilizing component (4) being used to clamp the pipeline body (1) through a docking component (5); A cutting assembly (3), wherein the cutting assembly (3) is mounted at both ends of the clamping assembly (2), and the cutting assembly (3) is located between the clamping assembly (2) and the stabilizing assembly (4); The cutting assembly (3) comprises an arc-shaped rod (31) fixedly mounted at both ends of the clamping assembly (2); a second limit block (35) is arranged at one end of the inner periphery of the arc-shaped rod (31), and a first limit block (33) is arranged at the other end of the outer periphery of the arc-shaped rod (31); The outer part of the arc-shaped rod (31) is slidably engaged with a sliding rod (32), and the side of the sliding rod (32) is fixed with a connecting plate (36) for installing a cutting device; The inner periphery of the sliding rod (32) is provided with a second protrusion (37), and the outer periphery of the sliding rod (32) is fixedly provided with a first protrusion (34); The arc rod (31) and the sliding rod (32) are both in the shape of a semicircular hoop; The sliding rod (32) rotates 180 degrees along the arc-shaped rod (31), and the sliding rod (32) and the arc-shaped rod (31) form a circular ring; When the sliding rod (32) rotates 180 degrees in the forward direction, the first protrusion (34) abuts against the first limit block (33); when the sliding rod (32) rotates 180 degrees in the reverse direction, the second protrusion (37) abuts against the second limit block (35); during the rotation process, the pipe body (1) is disconnected by the cutting device.

2. The trenchless pipeline repair cutting device according to claim 1, characterized in that: The clamping assembly (2) comprises a first fixing frame (21), and both ends of the bottom of the first fixing frame (21) are hinged with clamps (22), and the clamps (22) clamp and fix the pipeline body (1) by means of bolts.

3. The trenchless pipeline repair cutting device according to claim 2, characterized in that: The stabilizing assembly (4) comprises a connecting piece (46) fixedly mounted on the top of the first fixing frame (21), a connecting frame (45) is fixedly mounted on the top of the connecting piece (46), and a second fixing frame (41) is welded to the connecting frame (45); The second fixing frame (41) is in the shape of a semicircular hoop, the first fixing frame (21) clamps the pipe body (1), and the second fixing frame (41) fits the periphery of the pipe body (1).

4. The trenchless pipeline repair cutting device according to claim 3, characterized in that: Clamping blocks (42) are movably engaged at both ends of the second fixing frame (41); The clamping block (42) is kept overlapping with the inner wall of the second fixing frame (41).

5. The trenchless pipeline repair cutting device according to claim 4, characterized in that: A stabilizing rod (48) is fixedly mounted on the top of the first fixing frame (21), and a transmission plate (44) is provided on the outer movable sleeve of the stabilizing rod (48); The connecting member (46) is provided with a through slot (47) for the transmission plate (44) to pass through and limit the position of the transmission plate (44).

6. The trenchless pipeline repair cutting device according to claim 5, characterized in that: The transmission plate (44) is respectively connected to the two clamping blocks (42) via a connecting plate (43); The two clamping blocks (42) are initially located in the second fixing frame (41), the second fixing frame (41) is in close contact with the pipe body (1), and the transmission plate (44) moves downward to push the two clamping blocks (42) out of the second fixing frame (41) through the connecting plate (43), thereby reducing the opening of the second fixing frame (41) to clamp the pipe body (1).

7. The trenchless pipeline repair cutting device according to claim 6, characterized in that: The docking assembly (5) comprises a second connecting rod (51) sleeved on the first fixing frame (21), a limiting ring (52) is fixedly mounted in the middle of the second connecting rod (51), and the limiting ring (52) contacts the top of the first fixing frame (21).

8. The trenchless pipeline repair cutting device according to claim 7, characterized in that: A hand wheel (56) is movably mounted on the top of the transmission plate (44); the second connecting rod (51) passes through the transmission plate (44); and the hand wheel (56) and the second connecting rod (51) are threadedly sleeved.

9. The trenchless pipeline repair cutting device according to claim 8, characterized in that: A limiting groove (53) is provided on the outside of the second connecting rod (51), a transmission rod (54) is movably sleeved inside the second connecting rod (51), a hanging rod (55) is fixed on the top of the transmission rod (54), and a spring block (57) movably engaged in the limiting groove (53) is provided inside the first fixing frame (21).

10. The trenchless pipeline repair cutting device according to claim 9, characterized in that: The opposite ends of the two spring blocks (57) are in a beveled shape; The spring clamping block (57) is initially engaged in the limiting groove (53), and the top of the transmission rod (54) is in an arc shape.

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