Dismounting method for deep-cavity narrow multi-dimensional space conduit support and hoop

Abstract

The invention discloses a method for dismantling a guide pipe support and a clamp in a deep-cavity narrow multi-dimensional space, which comprises the following steps of: adopting a configured cutting tool, extending a saw blade of the cutting tool into the deep-cavity space of a workpiece through a long circular hole of the workpiece, and extending the saw blade into the clamp of the guide pipe support; the blade surface of the saw blade is required to face the hoop, then the handle operation part of the cutting tool is pulled back and forth by hand, the blade of the saw blade is used for cutting the hoop, the hoop used for fixing the guide pipe is separated from the support, after cutting is completed, the saw blade is withdrawn from the oblong hole of the workpiece, then the angle section bolt connected with the support is detached from the outer side of the workpiece, and the cutting tool is used for cutting the guide pipe. Therefore, the clamp and the support can be dismounted. By the adoption of the dismounting method, the requirement for maintaining the guide pipe in the deep-cavity narrow multi-dimensional space can be met, parts in the narrow space can be conveniently dismounted, and the dismounting method is particularly suitable for being popularized and applied in the field of deep-cavity narrow multi-dimensional space repairing.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft repair, and in particular to a method for removing a catheter support and a clamp for a deep cavity narrow multi-dimensional space. Background Art

[0002] The main beam is an important part of the aircraft, and the aircraft fuel tank is generally installed on the main beam, which will form a deep cavity, narrow multi-dimensional space after installation. Figure 1 As shown, a support and a clamp are installed in the space, and the conduit is fixed by the clamp. In the daily maintenance process, the bolt holes in the main beam edge strip need to be extruded and strengthened for existing faults. The existing conventional method for extrusion strengthening is inconvenient to operate. The main reason is that the bolt hole is located in a deep cavity and narrow space. In particular, for the main beam component located near the aircraft fuel tank, the only construction channel is an oblong hole with a length of 50mm and a width of 30mm. There is a conduit connected to the fuel system near the bolt hole, as well as a support and a clamp for fixing the conduit. This will affect the operation channel of the last two bolt holes for extrusion strengthening. It is necessary to remove the conduit fixing point, and then strengthen the bolt hole. After the strengthening treatment, find other fixing points to fix the conduit.

[0003] During aircraft maintenance, it is necessary to eliminate existing faults in a timely manner. If the faults are not eliminated in time, it will leave hidden dangers to product safety. Through investigation, it was found that the main reason was fatigue cracks in the bolt holes in the main beam edge strip. Therefore, it is necessary to extrusion strengthen the bolt holes of the main beam. Before strengthening, this part was analyzed and two solutions were obtained. One is to adopt the demolition method, and the other is to adopt a small-scale local destruction method. If the direct demolition method is adopted, the existing general tools cannot enter the narrow space of the deep cavity, so the small-scale local destruction method is adopted. The small-scale local destruction method is not only low-cost but also easy to implement.

[0004] The small-scale local destruction method requires the removal of the fuel pipe. Before removing the fuel pipe, it is necessary to release the clamp fixing the fuel pipe and saw off the clamp without damaging the fuel pipe and other parts of the space. Since this part is the fuel area, the frequency of cutting cannot be too fast. Therefore, in order to meet the requirements of extrusion strengthening treatment of the bolt holes in the main beam edge strip, it is very necessary to propose a method for convenient removal of the conduit fixing point. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the problems existing in the background technology. When fatigue cracks appear in the bolt holes in the main beam edge strips, it is necessary to eliminate the faults in a timely manner. For the problems existing in the maintenance of deep-cavity narrow multi-dimensional space ducts, in order to smoothly cut the clamps and remove the fuel ducts for easy repair, a convenient dismantling method is provided. By using this dismantling method, through the configured cutting tools, it is convenient to dismantle the components in a narrow space to meet the use requirements. Specifically, it is a dismantling method for deep-cavity narrow multi-dimensional space duct supports and clamps.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for removing a catheter support and a clamp for a deep and narrow multi-dimensional space, wherein the removal method is to use a configured cutting tool, extend the saw blade of the cutting tool through the oblong hole of the workpiece into the deep cavity space of the workpiece, and extend the saw blade into the clamp of the catheter support, and require the blade surface of the saw blade to face the clamp direction, and then pull the handle operating part of the cutting tool back and forth by hand, use the blade of the saw blade to cut the clamp, so that the clamp used to fix the catheter is separated from the support, and when the cutting is completed, first withdraw the saw blade from the oblong hole of the workpiece, and then remove the angle bolt connected to the support from the outside of the workpiece, thereby completing the removal of the clamp and the support.

[0007] Furthermore, a method for removing a catheter support and a clamp for a deep-cavity narrow multi-dimensional space as described in the present invention is adopted. During the cutting process, the operator controls the handle operating part with one hand and holds the main support part of the cutting tool with the other hand. The saw blade is driven back and forth through the main support part, and the saw blade is pulled back and forth slowly so that the saw blade cuts with a small amplitude and a slow frequency.

[0008] Furthermore, a method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space as described in the present invention is used. Before cutting, an endoscope needs to be simultaneously inserted through the oblong hole of the workpiece, and the endoscope is manually operated to monitor the catheter in the deep cavity space to prevent damage to the catheter during the cutting process. When the support and clamp used to fix the catheter are separated, after the cutting is completed, the cutting tool is first removed from the oblong hole of the workpiece, and then the endoscope is removed, and then the removed clamp and support are taken out, and finally the excess material in the deep cavity space needs to be cleared.

[0009] Furthermore, a method for removing a deep-cavity narrow multi-dimensional space catheter support and a clamp described in the present invention is adopted, and the cutting tool includes a trunk support part, a handle operating part and a saw blade. The front end of the trunk support part is arranged in a flat surface structure, and two screw holes are provided on the flat surface structure. Screws matching the screw holes are also arranged. The screws are screwed in the trunk support part through the screw holes, so that the saw blade is detachably fixed to the flat surface structure at the front end of the trunk support part by the screws, and the handle operating part is located at the rear end of the trunk support part.

[0010] Furthermore, a method for removing a deep-cavity narrow multi-dimensional space catheter support and a clamp is adopted in the present invention, wherein the trunk support part and the handle operating part are made of a stainless steel round pipe as an integrated structure, wherein the saw blade installed at the front end of the trunk support part is arranged vertically between the handle operating part, and the blade surface of the saw blade is set in the direction of the clamp.

[0011] Furthermore, a method for removing a catheter support and a clamp in a deep, narrow, multi-dimensional space as described in the present invention is adopted, wherein the saw blade is a metal saw blade having a harderness and a wear resistance greater than that of an aluminum alloy, and the length of the main support portion in the cutting tool is greater than the depth of the deep cavity space of the workpiece.

[0012] The method for removing the support and clamp of a catheter in a deep cavity and narrow multi-dimensional space described in the present invention has the following beneficial effects compared with the prior art: the fixed clamp in a narrow space cannot be removed by using the existing general tools, and the fixed clamp can be quickly removed by extending into the space to the clamp at the designated position through the configured cutting tool, and cutting back and forth, replacing the previous method of removing the catheter fixed point. During the cutting process, the cutting angle and the elongation of the cutting tool can be appropriately adjusted to obtain the most suitable cutting position, and prevent the cutting from being large in amplitude and fast in frequency, which can reduce the risk of cutting. It can be seen that the removal method described in the present invention can not only meet the maintenance problem of catheters in deep cavities and narrow multi-dimensional spaces, but also facilitate the removal of components in narrow spaces, ensuring safe production and product quality, and has the characteristics of high accuracy and strong operability, greatly improving processing efficiency and reducing safety risks. It is worthy of promotion and application in special positions and environments of components, especially in the field of repair of deep cavity and narrow multi-dimensional spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the deep cavity narrow multi-dimensional space structure formed by the existing aircraft fuel tank and main beam; Figure 2 is a schematic structural diagram of the cutting tool of the present invention; Figure 3 It is a structural schematic diagram of the cutting tool of the present invention when in operation.

[0015] As shown in the figure: 1-main support part, 2-saw blade, 3-handle operating part, 4-clamp, 5-oblong hole. DETAILED DESCRIPTION

[0016] The following will be combined with 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. Example 1

[0017] like Figure 2 As shown, this embodiment provides a cutting tool for deep-cavity narrow multi-dimensional space catheter supports and clamps, the cutting tool includes a trunk support part 1, a handle operating part 3 and a saw blade 2, the front end of the trunk support part 1 is arranged in a flat surface structure, two screw holes are provided on the flat surface structure, and screws matching the screw holes are also arranged, the screws are screwed in the trunk support part 1 through the screw holes, the saw blade 2 is detachably fixed to the flat surface structure at the front end of the trunk support part 1 by screws, and the handle operating part 3 is located at the rear end of the trunk support part 1.

[0018] In the specific manufacturing process, the main support part 1 and the handle operating part 3 are made of stainless steel round pipe as an integrated structure, and the diameter of the stainless steel round pipe is required to be less than 15 mm, wherein the saw blade 2 installed at the front end of the main support part 1 is arranged vertically between the handle operating part 3, and the blade surface of the saw blade 2 is set towards the clamp 4; the saw blade 2 adopts a metal saw blade with a hardness and wear resistance greater than that of aluminum alloy, and the length of the main support part 1 in the cutting tool is greater than the depth of the deep cavity space of the workpiece. Example 2

[0019] like Figure 3 As shown, this embodiment provides a method for removing a catheter support and a clamp for a deep cavity narrow multi-dimensional space, the removal method is to use a configured cutting tool, extend the saw blade 2 of the cutting tool through the oblong hole 5 of the workpiece into the deep cavity space of the workpiece, and make the saw blade 2 extend into the clamp 4 of the catheter support, and require the blade surface of the saw blade 2 to face the clamp 4, and then pull the handle operating part 3 of the cutting tool back and forth by hand, use the blade of the saw blade 2 to cut the clamp 4, so that the clamp 4 used to fix the catheter is separated from the support, and when the cutting is completed, first withdraw the saw blade 2 from the oblong hole 5 of the workpiece, and then remove the angle bolt connected to the support from the outside of the workpiece, and complete the removal of the clamp 4 and the support.

[0020] During the specific cutting process, the operator controls the handle operating part 3 with one hand and holds the main support part 1 of the cutting tool with the other hand, drives the saw blade 2 to move back and forth through the main support part 1, and pulls the saw blade 2 back and forth slowly, so that the saw blade 2 cuts with a small amplitude and a slow frequency.

[0021] Furthermore, in order to avoid damage to other components in the space during the cutting process, the dismantling method described in this embodiment is adopted. Before cutting, an endoscope needs to be simultaneously inserted through the oblong hole 5 of the workpiece, and the endoscope is manually operated to monitor the catheter in the deep cavity space to prevent damage to the catheter during the cutting process. When the support for fixing the catheter is separated from the clamp 4, after the cutting is completed, the cutting tool is first removed from the oblong hole 5 of the workpiece, and then the endoscope is removed. After that, the removed clamp 4 and support are taken out, and finally the excess materials in the deep cavity space need to be cleared.

[0022] With the removal method of the present invention, it is impossible to remove the fixed clamp in a narrow space by using existing general tools, such as Figure 1 As shown, the clamp 4 installed in the workpiece to be removed is connected to the support, and the support is connected to the angle bolt on the outside of the workpiece, and the clamp 4 installed on the support is used to fix the catheter. Since its only construction channel is an oblong hole 5 with a length of 50mm and a width of 30mm, a cutting tool that is convenient for operators to operate is designed in advance according to the position of the clamp 4 in the workpiece. In the design process, it is necessary to make relevant requirements on the size of the manufactured cutting tool, requiring the length of the saw blade 2, and the cutting depth of the saw blade 2 after the tooth edge is combined with the overall structure is greater than the thickness of the single piece of the clamp 4, so that it is convenient to cut. At the same time, it is also necessary to select the material of the cutting tool. By consulting the information, it is concluded that the material of the clamp 4 is aluminum alloy, so a saw blade 2 with a hardness and wear resistance greater than that of aluminum alloy is used, so that it can be reasonable and can be cut.

[0023] During the specific operation, the operator extends the cutting tool into the space through the oblong hole 5, reaches the clamp 4 at the designated position, and cuts back and forth with a small amplitude and a slow frequency. When the cutting is completed, the angle bolts can be removed from the outside to move the fuel pipe away for the next step of strengthening the bolt holes. During the cutting process, the cutting angle and the elongation of the cutting tool can be adjusted appropriately to obtain the most suitable cutting position. It can also be used in components similar to this narrow space to achieve multiple uses. For technicians in this field, the cutting tool can be modified, such as bending, lengthening, replacing the cutting saw blade 2, replacing the handle operating part 3, and other improvements are all within the protection scope of the present invention.

[0024] In summary, the dismantling method described in the present invention can not only meet the problem of repairing catheters in deep and narrow multi-dimensional spaces, but also facilitate the dismantling of components in narrow spaces, ensuring safe production and product quality. It has the characteristics of high accuracy and strong operability, greatly improves processing efficiency, and reduces safety risks. It is worthy of promotion and application in special positions and environments of components, especially in the field of deep and narrow multi-dimensional space repairs.

[0025] Other details of the present invention are conventional technologies known to those skilled in the art and are therefore not described in detail.

[0026] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. The above description is only a preferred implementation method of the present invention and does not limit the present invention. Any minor modifications, equivalent substitutions and improvements made according to the technical solutions of the present invention should be included in the protection scope of the technical solutions of the present invention.

Claims

1. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space, characterized in that :The dismantling method is to use a configured cutting tool, extend the saw blade of the cutting tool through the oblong hole of the workpiece into the deep cavity space of the workpiece, and extend the saw blade into the clamp of the catheter support, and require the blade surface of the saw blade to face the clamp direction, and then pull the handle operating part of the cutting tool back and forth by hand, use the blade of the saw blade to cut the clamp, so that the clamp used to fix the catheter is separated from the support. When the cutting is completed, first withdraw the saw blade from the oblong hole of the workpiece, and then remove the angle bolt connected to the support from the outside of the workpiece, thereby completing the dismantling of the clamp and the support.

2. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space according to claim 1, characterized in that: During the cutting process, the operator controls the handle operating part with one hand and holds the main support part of the cutting tool with the other hand, driving the saw blade to move back and forth through the main support part, and pulling the saw blade back and forth slowly so that the saw blade cuts with a small amplitude and a slow frequency.

3. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space according to claim 1, characterized in that: Before cutting, an endoscope needs to be inserted through the oblong hole of the workpiece, and the endoscope is manually operated to monitor the catheter in the deep cavity space to prevent damage to the catheter during the cutting process. When the support and clamp used to fix the catheter are separated, after the cutting is completed, the cutting tool is first removed from the oblong hole of the workpiece, and then the endoscope is removed, and then the removed clamp and support are removed. Finally, the excess material in the deep cavity space needs to be cleared.

4. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space according to claim 1, characterized in that: The cutting tool includes a main support part, a handle operating part and a saw blade. The front end of the main support part is arranged as a flat surface structure, two screw holes are arranged on the flat surface structure, and screws matching the screw holes are arranged. The screws are screwed into the main support part through the screw holes. The saw blade is detachably fixed to the flat surface structure at the front end of the main support part by the screws, and the handle operating part is located at the rear end of the main support part.

5. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space according to claim 4, characterized in that: The trunk support part and the handle operating part are made of a stainless steel round pipe as an integrated structure, wherein the saw blade installed at the front end of the trunk support part is arranged vertically between the handle operating part, and the blade surface of the saw blade is arranged toward the clamp direction.

6. A method for removing a catheter support and a clamp for a deep, narrow, multi-dimensional space according to claim 5, characterized in that: The saw blade is a metal saw blade with a hardness and wear resistance greater than that of an aluminum alloy, and the length of the main support portion in the cutting tool is greater than the depth of the deep cavity space of the workpiece.

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