Broken wire taking tool for shield center cutter

Abstract

The utility model discloses a broken wire taking tool for a shield center cutter. The wire taking tool comprises a fixing frame and an adjusting assembly arranged on the fixing frame. The fixing frame partially extends into the cutter box; the fixing frame is provided with a wire taking hole; the drilling machine comprises a drill bit and a connector, the drill bit can be fixed to the bolt drill hole after penetrating through the screw taking hole, and the connector is used for being connected with a wrench; the adjusting assembly abuts against different positions of the cutter assembly, so that the position of the fixing frame in the left-right direction is adjusted, and the screw taking hole is aligned with the bolt. The wire taking tool solves the technical problem that an existing shield center cutter is large in broken wire taking difficulty.

Description

Technical Field

[0001] The present invention belongs to the technical field of municipal engineering, and in particular relates to a tool for removing wires from a shield machine's central cutter. Background Art

[0002] With the acceleration of infrastructure construction in my country, shield construction is increasingly being used in projects such as subways, highways, railways, and integrated pipeline corridors. During shield construction, encountering uneven ground conditions is unavoidable. This often requires personnel to enter the chamber under pressure to change cutters. During these operations, the center cutter's tool bolt is most susceptible to breaking, and currently, no effective method exists for wire extraction, either domestically or internationally. Because pressurized entry into the chamber involves a confined, high-pressure working environment, and open flames and unsafe voltages exceeding 24 volts are strictly prohibited within the chamber, further complicating the task of removing broken wires. Currently, the most common method for removing broken wires is to insert a locking nut and then use a jack or hand winch to pull the wire. However, the extremely limited space within the cutter box (approximately 50 cm long) limits the wrench's force point, resulting in insufficient torque on the bolt, seriously delaying cutter changes and introducing further safety risks during pressurized entry. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a tool for removing broken wire from a shield center cutter, which can solve at least part of the above-mentioned technical problems.

[0004] A first aspect of the disclosed embodiments provides a wire-taking tool for a shield center cutter, the shield center cutter comprising a cutter box, a mounting platform located in the cutter box, and a cutter assembly mounted on the mounting platform via bolts; the wire-taking tool comprises a fixing frame and an adjustment assembly disposed on the fixing frame; the fixing frame partially extends into the interior of the cutter box; the fixing frame is provided with a wire-taking hole;

[0005] A drilling rig, comprising a drill bit and a connector, wherein the drill bit can be fixed to the bolt drill hole after passing through the wire extraction hole, and the connector is used to connect to the wrench;

[0006] The adjusting assembly abuts against different positions of the tool assembly, thereby adjusting the position of the fixing bracket in the left-right direction so that the wire-taking hole is aligned with the bolt.

[0007] Optionally, the adjustment assembly includes two symmetrically arranged blocks; the blocks are mounted on the fixing frame in a manner that allows them to move in the forward and backward directions, and during the forward and backward movement of the blocks, the inner side walls of the blocks abut against different positions of the tool assembly.

[0008] Optionally, along the direction from the stop block to the other stop block, the inner side wall of the stop block gradually tilts toward the fixing bracket.

[0009] Optionally, the inner side wall of the stopper is a plane.

[0010] Optionally, the adjustment assembly further includes two adjustment members corresponding one to one with the two stoppers, the adjustment members are rotatably mounted on the fixing frame and are threadably engaged with the stoppers.

[0011] Optionally, the fixing frame includes a front fixing plate, a rear fixing plate and reinforcing ribs connected between the front fixing plate and the rear fixing plate; the stop block is located on the front surface of the front fixing plate; and the wire removal hole is located on the front fixing plate and the rear fixing plate.

[0012] Optionally, the front fixing plate abuts against the mounting platform.

[0013] Optionally, the rear fixing plate abuts against the tool box.

[0014] Optionally, the wire extraction tool further includes a bearing; the bearing is sleeved on the drilling rig and installed in the wire extraction hole.

[0015] Optionally, the drilling rig includes a sleeve, and the sleeve is made of epoxy resin.

[0016] The main technical effects achieved by the embodiments of the present disclosure are: the wire-taking tool in the present disclosure can be installed at the bolt position of the tool assembly to fix bolts, extend sleeves, drill rods and other tools, and ensure that they do not produce deflection deformation due to lengthening, thereby extending the narrow wire-taking space in the tool box to the unrestricted space outside the tool box, thereby increasing the operating length of tools such as wrenches, providing greater torque, and achieving the purpose of quickly removing broken wires. The present disclosure has a simple structure and is easy to operate, which can greatly reduce the work intensity of special operators in high-pressure confined spaces and greatly improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a shield center tool box according to an embodiment of the present disclosure;

[0018] Figure 2 Schematic diagram of a wire extraction tool and a tool box in cooperation with each other in an embodiment of the present disclosure (the drilling machine is omitted);

[0019] Figure 3 It is a schematic diagram of a wire extraction tool in an embodiment of the present disclosure.

[0020] Explanation of the accompanying reference numerals: 1. Tool box; 11. Mounting platform; 12. Bolt; 13. Tool assembly; 2. Fixing frame; 21. Thread extraction hole; 3. Drilling rig; 31. Drill bit; 32. Connector; 4. Stop block; 41. Inner wall; 5. Adjusting part; 22. Front fixing plate; 23. Rear fixing plate; 24. Reinforcing rib; 6. Bearing. DETAILED DESCRIPTION

[0021] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0022] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used in this disclosure should have the ordinary meaning understood by a person of ordinary skill in the art to which this disclosure belongs. The words "first," "second," and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are simply used to distinguish different components. Similarly, words such as "a" or "an" do not indicate a quantitative limitation, but rather indicate the presence of at least one. If only "one" is referred to, it will be separately stated. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front," "rear," "lower," and / or "upper" are for ease of description only and are not limited to a single position or spatial orientation. Words such as "include" or "comprises" mean that the elements or objects listed before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connections, but can also include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0023] Figure 1 This is a schematic diagram of the installation of a shield center cutter. Figure 1 As shown, the shield center cutter includes a cutter box 1, a mounting platform 11 located in the cutter box 1, and a cutter assembly 13 mounted on the mounting platform 11 by bolts 12; the cutter assembly 13 in the present disclosure includes a cutter seat and a circular cutter mounted on the cutter seat. Of course, the cutter assembly 13 in the present disclosure is replaced according to different geological needs. The specific replacement method is to take out the bolt 12 with a wrench. The wrench in the present disclosure can be a manual wrench or an electric wrench, and the present disclosure does not limit this. The bolt 12 in the present disclosure is easy to break during the frequent replacement process, and at the same time, the broken wire of the bolt 12 is located inside the cutter box 1, which is very difficult to remove.

[0024] like Figure 2 and Figure 3 As shown, the present disclosure provides a wire-taking tool, which includes a fixing frame 2 and an adjustment assembly arranged on the fixing frame 2; the fixing frame 2 partially extends into the interior of the knife box 1; the fixing frame 2 is provided with a wire-taking hole 21;

[0025] The drill rig 3 includes a drill bit 31 and a connector 32. The drill bit 31 can be fixed with the bolt 12 after passing through the wire hole 21. The connector 32 is used to connect with the wrench. The driving part of the drill bit 31 in the present disclosure adopts a standard driving part connector and can be installed and removed with the pneumatic wrench at any time.

[0026] The adjusting assembly abuts against different positions of the cutter assembly 13 , thereby adjusting the position of the fixing frame 2 in the left-right direction so that the thread-taking hole 21 is aligned with the bolt 12 .

[0027] The main technical effects achieved by the embodiments of the present disclosure are: the wire-taking tool in the present disclosure can be installed at the position of the bolt 12 of the tool assembly 13, which can be used to fix the bolt 12, extend the sleeve, drill rod and other tools, and ensure that they do not produce deflection deformation due to lengthening, thereby extending the narrow wire-taking space in the tool box 1 to the unrestricted space outside the tool box 1, thereby increasing the operating length of tools such as wrenches, providing greater torque, and achieving the purpose of quickly removing broken wires. The present disclosure has a simple structure and is easy to operate, which can greatly reduce the work intensity of special operators in high-pressure confined spaces and greatly improve work efficiency.

[0028] As an optional embodiment, the adjustment assembly includes two symmetrically arranged blocks 4; the blocks 4 are mounted on the fixed frame 2 so as to be movable in the forward and backward directions. During the forward and backward movement of the blocks 4, the inner sidewalls 41 of the blocks 4 contact different positions of the tool assembly 13. Optionally, as the blocks 4 point toward the other blocks 4, the inner sidewalls 41 of the blocks 4 gradually tilt toward the fixed frame 2. Optionally, the adjustment assembly also includes two adjustment members 5 corresponding one to each of the two blocks 4. The adjustment members 5 are rotatably mounted on the fixed frame 2 and threadedly engaged with the blocks 4. The adjustment members 5 in the present disclosure are knobs.

[0029] Specifically, when the wire-retrieving tool is working, the two blocks 4 respectively abut against the two sides of the tool, and through the forward and backward movement of the blocks 4 and the inclined inner wall 41 on the blocks 4, the blocks 4 can abut against different positions of the prop assembly during the forward and backward movement of the blocks 4, thereby giving the fixing frame 2 space to move forward and backward until the fixing frame 2 abuts against the tool box 1. In particular, when the adjusting member 5 is tightened, there is a huge friction force between the block 4 and the tool assembly 13, thereby achieving the fixation of the wire-retrieving tool in the tool box 1.

[0030] As an optional embodiment, the inner side wall 41 of the stopper 4 is a plane. Of course, in other embodiments, the inner side wall 41 of the stopper 4 in the present disclosure can also be a curved surface, and the present disclosure is not limited to this.

[0031] As an optional embodiment, the fixing frame 2 includes a front fixing plate 22, a rear fixing plate 23, and a reinforcing rib 24 connected between the front fixing plate 22 and the rear fixing plate 23; the stopper 4 is located on the front surface of the front fixing plate 22; and the wire extraction hole 21 is located on the front fixing plate 22 and the rear fixing plate 23. When the wire extraction tool is fixed in the tool box 1, the front fixing plate 22 abuts against the mounting platform 11, or the rear fixing plate 23 abuts against the tool box 1.

[0032] As an optional embodiment, the wire extraction tool also includes a bearing 6; the bearing 6 is sleeved on the drill rig 3 and installed in the wire extraction hole 21. Specifically, the drill rig 3 includes a sleeve, and the material of the sleeve is epoxy resin. The drill rig 3 is designed to be used with the tool. Since the drill bit 31 is relatively long as a whole, in order to avoid deviation and breakage, bearings 6 devices are added to both ends of the wire extraction tool. The non-wired part of the drill bit 31, that is, the sleeve, is designed to be wrapped with epoxy resin. After wrapping, the diameter just matches the inner diameter of the bearing 6 to ensure that the bearing 6 also rotates during the selection process of the drill bit 31. At the same time, when in use, it is necessary to evenly apply vaseline on the epoxy resin part of the drill bit 31 to ensure that the drill bit 31 can smoothly slide forward through the inner diameter of the bearing 6 during the drilling process.

[0033] To sum up, when the bolt 12 breaks in the tool box 1, a fixed bracket of the drill rig 3 is formed by the wire extraction tool, and then the drill rig 3 is passed through the wire extraction hole 21 on the wire extraction tool. The drill rig 3 is started and then drills a hole in the broken wire in the tool box 1, thereby realizing a fixed connection between the drill rig 3 and the broken wire. At this time, the connecting head 32 of the drill rig 3 is located on the outside of the tool box 1, which facilitates the connection between the connecting head 32 of the drill rig 3 and the wrench, so that the broken wire in the tool box 1 can be removed in a relatively labor-saving, convenient and quick manner.

[0034] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A tool for removing broken wires from a shield center cutter, the shield center cutter comprising a cutter box, a mounting platform located in the cutter box, and a cutter assembly mounted on the mounting platform by bolts; characterized in that: The wire-taking tool comprises a fixing frame and an adjusting assembly arranged on the fixing frame; the fixing frame partially extends into the interior of the tool box; the fixing frame is provided with a wire-taking hole; A drilling rig, comprising a drill bit and a connector, wherein the drill bit can be fixed to a bolt hole after passing through the thread extraction hole, and the connector is used to connect to a wrench; The adjusting assembly abuts against different positions of the tool assembly, thereby adjusting the position of the fixing bracket in the left-right direction so that the wire-taking hole is aligned with the bolt.

2. A shield center cutter wire removal tool according to claim 1, characterized in that: The adjustment assembly includes two symmetrically arranged blocks; the blocks are mounted on the fixing frame in a manner that allows them to move in the front-rear direction, and during the front-rear movement of the blocks, the inner side walls of the blocks abut against different positions of the tool assembly.

3. A shield center cutter wire removal tool according to claim 2, characterized in that: Along the direction from the stop block to the other stop block, the inner side wall of the stop block gradually tilts toward the fixing frame.

4. A shield center cutter wire removal tool according to claim 3, characterized in that: The inner side wall of the stopper is a plane.

5. The shield center cutter broken wire removal tool according to claim 2, characterized in that: The adjustment assembly further comprises two adjustment members corresponding to the two stoppers one by one. The adjustment members are rotatably mounted on the fixing frame and are threadably engaged with the stoppers.

6. A shield center cutter wire removal tool according to claim 2, characterized in that: The fixing frame includes a front fixing plate, a rear fixing plate and a reinforcing rib connected between the front fixing plate and the rear fixing plate; the stopper is located on the front surface of the front fixing plate; and the wire-taking hole is located on the front fixing plate and the rear fixing plate.

7. A shield center cutter wire removal tool according to claim 6, characterized in that: The front fixing plate abuts against the mounting platform.

8. The shield center cutter wire removal tool according to claim 6, characterized in that: The rear fixing plate abuts against the knife box.

9. The shield center cutter broken wire removal tool according to claim 1, characterized in that: The wire-taking tool further comprises a bearing; the bearing is sleeved on the drilling rig and installed in the wire-taking hole.

10. The shield center cutter broken wire removal tool according to claim 1, characterized in that: The drilling rig comprises a sleeve, and the material of the sleeve is epoxy resin.

Images