Tool for assisting in disassembling pipeline flange bolt

Abstract

A tool for assisting in disassembling a pipeline flange bolt belongs to the technical field of pipeline inspection and maintenance and comprises an arc-shaped shell, a flange plate clamping groove is formed in one side of the arc-shaped shell, a bolt sleeve mounting groove is formed in the inner wall, opposite to a flange plate, of the flange plate clamping groove, and a threaded hole is machined in the bottom of the bolt sleeve mounting groove. The threaded hole is communicated to the other side of the arc-shaped shell, a pushing shaft is in threaded connection with the interior of the threaded hole, a bolt sleeve is fixedly connected to one end of the pushing shaft and located in the bolt sleeve mounting groove, and a hexagonal groove used for assembling a bolt head is formed in the side face of the bolt sleeve; a clamping structure used for limiting the arc-shaped shell is arranged on the outer wall of the arc-shaped shell. The pipeline flange bolt dismounting tool is used for assisting in dismounting pipeline flange bolts, rapid dismounting can be achieved, especially bolts and nuts at the bottom can be dismounted, fastening bolts can be clamped and fixed in a narrow space, dismounting is convenient, and therefore the dismounting operation difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline inspection, repair and maintenance, and particularly relates to a tool for assisting in disassembling pipeline flange bolts. Background Technique

[0002] Pipelines are the most common equipment and facilities in chemical production, and are usually connected by flange bolts. During daily inspection, repair and maintenance, it mainly involves pipeline dredging, leakage treatment, and replacement of some old and damaged pipelines to eliminate potential safety hazards and ensure stable production of the device. In this process, it is necessary to remove the bolts and nuts on the flange. However, due to the influence of sunlight, rain, and the use environment during the long-term use of the pipeline, fasteners such as bolts and nuts have various abnormal states, such as rust and corrosion. Therefore, when disassembling and assembling, relying solely on a wrench for disassembly cannot be quickly and easily disassembled. Often, two wrenches are required, one to hold the end of the bolt and the other to hold the nut. For bolts and nuts in good condition, single-person operation is not a big problem. However, for bolts and nuts in poor condition, the single person's two hands need to apply forces in two different directions respectively, and it is still difficult to rotate and disassemble. At the same time, for the bolts and nuts located at the bottom of the pipeline, it is impossible for tools such as wrenches to enter and clamp because they are too close to the ground. If small tools are used instead, it is impossible to apply force well. Therefore, a tool for assisting in disassembling pipeline flange bolts is proposed to achieve rapid disassembly. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a tool for assisting in disassembling pipeline flange bolts that can achieve rapid disassembly in view of the deficiencies in the above-mentioned background technique.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a tool for assisting in disassembling pipeline flange bolts, including an arc-shaped outer shell. A flange groove is opened on one side of the arc-shaped outer shell. A bolt sleeve installation groove is opened on the inner wall opposite to the flange groove. A threaded hole is processed at the bottom of the bolt sleeve installation groove, and the threaded hole communicates with the other side of the arc-shaped outer shell. A push shaft is threadedly connected in the threaded hole. One end of the push shaft is fixedly connected with a bolt sleeve, and the bolt sleeve is located in the bolt sleeve installation groove. A hexagonal groove for assembling the bolt head is opened on the side surface of the bolt sleeve. A clamping structure for limiting the arc-shaped outer shell is provided on the outer wall of the arc-shaped outer shell.

[0005] Further, the clamping structure for limiting the arc-shaped outer shell includes a strip-shaped groove opened on the outer wall of the arc-shaped outer shell. A cross shaft is fixedly welded on the inner wall of the strip-shaped groove. A rotating groove is opened at the end of the cross shaft. A connecting plate is hinged in the rotating groove. A rotating bar is fixedly welded at the end of the connecting plate. A clamping plate is fixedly welded at the end of the rotating bar. Of course, it can also be designed into other structures.

[0006] Further, the number and positions of the bolt sleeve mounting grooves and threaded holes are set according to the specific structure of the flange, and the bolt sleeve mounting grooves should be correspondingly assembled with the connecting bolts on the flange.

[0007] Further, the pushing shaft is an external thread shaft and is threadedly connected to the threaded hole.

[0008] Further, a cross slot is provided at the other end of the pushing shaft.

[0009] Further, there are two sets of clamping structures for limiting the arc-shaped housing, which are respectively located at positions close to the ends of the arc-shaped housing. Of course, it can also be designed into other numbers of sets.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. When disassembling and assembling a pipeline with a flange, the arc-shaped housing can be directly clamped on the outer wall of the pipeline, and several fastening bolt heads on one side can be fixed simultaneously at one time. On the other side, tools such as wrenches can be used to disassemble them one by one, so as to achieve rapid disassembly.

[0012] 2. This tool can be applied to the upper and lower parts of the pipeline. Especially when disassembling the bolts and nuts at the bottom, it can clamp and fix the fastening bolts in a narrow space, which is convenient for disassembly, thereby reducing the difficulty of disassembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0014] Figure 2 is Figure 1 an isometric view of the embodiment shown;

[0015] Figure 3 is Figure 1 an exploded view of the embodiment shown;

[0016] Figure 4 is Figure 2 an enlarged view of the structure at A in

[0017] Explanation of the reference numerals in the drawings:

[0018] 1. Arc-shaped housing; 2. Flange card slot; 3. Bolt sleeve mounting groove; 4. Threaded hole; 5. Pushing shaft; 6. Bolt sleeve; 7. Strip-shaped slot; 8. Horizontal shaft; 9. Rotating slot; 10. Connecting plate; 11. Rotating bar; 12. Clamping plate; 13. Cross slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0020] Referring to Figures 1 to 4 , a tool for assisting in disassembling pipeline flange bolts, comprising an arc-shaped housing 1. A flange plate clamping groove 2 is provided on one side of the arc-shaped housing 1. A bolt sleeve installation groove 3 is provided on the inner wall of the flange plate clamping groove 2 opposite to the flange plate. A threaded hole 4 is machined at the bottom of the bolt sleeve installation groove 3. The threaded hole 4 communicates with the other side of the arc-shaped housing 1. A push shaft 5 is threadedly connected in the threaded hole 4. One end of the push shaft 5 is fixedly connected to a bolt sleeve 6, and the bolt sleeve 6 is located in the bolt sleeve installation groove 3. A hexagonal groove for assembling the bolt head is provided on the side surface of the bolt sleeve 6. A clamping structure for limiting the arc-shaped housing 1 is provided on the outer wall of the arc-shaped housing 1.

[0021] In this embodiment, the clamping structure for limiting the arc-shaped housing 1 includes a strip-shaped groove 7 opened on the outer wall of the arc-shaped housing 1. A cross shaft 8 is fixedly welded on the inner wall of the strip-shaped groove 7. A rotating groove 9 is provided at the end of the cross shaft 8. A connecting plate 10 is hinged in the rotating groove 9. A rotating bar 11 is fixedly welded at the end of the connecting plate 10. A clamping plate 12 is fixedly welded at the end of the rotating bar 11. Of course, it can also be designed into other structures.

[0022] In this embodiment, the number and positions of the bolt sleeve installation grooves 3 and the threaded holes 4 are set according to the specific structure of the flange plate, and the bolt sleeve installation grooves 3 should be correspondingly assembled with the connecting bolts on the flange plate.

[0023] In this embodiment, the push shaft 5 is an externally threaded shaft and is threadedly connected to the threaded hole 4.

[0024] In this embodiment, a cross slot 13 is provided at the other end of the push shaft 5. By rotating the cross slot 13 with a cross screwdriver, the push shaft 5 and the bolt sleeve 6 are moved left and right.

[0025] In this embodiment, there are two groups of the clamping structures for limiting the arc-shaped housing 1, which are respectively located at positions close to the ends of the arc-shaped housing 1. Of course, it can also be designed into other numbers of groups.

[0026] Working process: When in use, directly put the arc-shaped housing 1 on the flange position of the pipeline to be disassembled. When placing it, push the arc-shaped housing 1 until the inner wall of the flange slot 2 abuts against the side wall of the flange. Then, pull the rotating bar 11 to make the clamping plate 12 on the rotating bar 11 clamp on the side wall of the flange of another pipeline. At this time, each bolt head part on the flange is clamped in the hexagonal slot on the bolt sleeve 6. After that, a wrench or other tools can be used to directly rotate a nut on the other end face of the flange. In the initial state, when the wrench drives the nut and the bolt to rotate, it can be loosened. When it is loosened, the bolt and the nut will rotate synchronously with the wrench. When the bolt head rotates in the hexagonal slot, it will drive the bolt sleeve 6 and the push shaft 5 to rotate. Since the push shaft 5 is installed by threads, when the push shaft 5 rotates, it will push the arc-shaped housing 1 away from the flange. When the clamping plate 12 on the outer wall of the arc-shaped housing 1 tightly presses the flange, the arc-shaped housing 1 has moved to the limit position. At this time, the push shaft 5 cannot continue to rotate, that is, the bolt sleeve 6 cannot rotate, so as to clamp the bolt head in the bolt sleeve 6. In this case, use a cross screwdriver to rotate the cross slot 13 of other push shafts 5, so that the push shaft 5 drives the bolt sleeve 6 to move until it covers other bolt heads. Then, a wrench or other tools can be used to directly rotate the corresponding nut on the other end face of the flange to easily disassemble them one by one; finally, use a cross screwdriver to rotate the cross slot 13 of the push shaft 5 to make the push shaft 5 drive the bolt sleeve 6 to reset.

[0027] The utility model can be applied to the upper and lower parts of the pipeline. Especially when disassembling the bolts and nuts at the bottom, it can realize the clamping and fixing of the bolts in a narrow space, which is convenient for disassembly.

[0028] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" 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 directly connected or indirectly connected 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.

[0029] Although the embodiments of the present utility model have been shown and described above, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tool for assisting in removing pipeline flange bolts, characterized in that: It includes an arc-shaped shell, one side of which is provided with a flange groove, the inner wall of the flange groove opposite to the flange is provided with a bolt sleeve mounting groove, a threaded hole is processed at the bottom of the bolt sleeve mounting groove, the threaded hole is connected to the other side of the arc-shaped shell, a push shaft is threadedly connected to the threaded hole, one end of the push shaft is fixedly connected with a bolt sleeve, and the bolt sleeve is located in the bolt sleeve mounting groove, a hexagonal groove for assembling a bolt head is provided on the side of the bolt sleeve, and a clamping structure for limiting the arc-shaped shell is provided on the outer wall of the arc-shaped shell.

2. The tool for assisting in removing pipeline flange bolts according to claim 1, characterized in that: The clamping structure for limiting the arc-shaped shell includes a strip groove opened on the outer wall of the arc-shaped shell, a horizontal axis is fixedly welded on the inner wall of the strip groove, a rotation groove is opened at the end position of the horizontal axis, a connecting plate is hinged in the rotation groove, a rotation bar is fixedly welded at the end position of the connecting plate, and a clamping plate is fixedly welded at the end position of the rotation bar.

3. The tool for assisting in removing pipeline flange bolts according to claim 1 or 2, characterized in that: The number and positions of the bolt sleeve installation grooves and threaded holes are set according to the specific structure of the flange, and the bolt sleeve installation grooves should be assembled correspondingly with the connecting bolts on the flange.

4. The tool for assisting in removing pipeline flange bolts according to claim 1 or 2, characterized in that: The pushing shaft is an external threaded shaft, which is threadedly connected with the threaded hole.

5. The tool for assisting in removing pipeline flange bolts according to claim 1 or 2, characterized in that: The other end of the pushing shaft is provided with a cross groove.

6. The tool for assisting in removing pipeline flange bolts according to claim 1 or 2, characterized in that: The clamping structures for limiting the arc-shaped shell are divided into two groups, which are respectively located near the ends of the arc-shaped shell.

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