A set of specialized tools for disassembling and installing aircraft cable clamps.
By designing specialized tools, the difficulties in disassembling and installing aircraft cable clamps were solved, especially the problems of screw disassembly and rubber pad cutting in confined spaces, thus achieving an efficient and safe clamp installation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU STATE-OWNED FACTORY OF MACHINING
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-02
AI Technical Summary
During aircraft overhaul, traditional tools are difficult to effectively disassemble and install padded clamping clamps with relief holes, especially flathead hexagonal head screws and flathead semi-circular head screws with lugs in confined spaces. Furthermore, the size of the rubber pads is difficult to control during replacement, leading to problems such as cable wear or insecure installation.
A set of specialized tools was designed, including cutting tools, disassembly and assembly tools, and clamping tools, which are used for standardized cutting of rubber pads, disassembly and installation of slotted hexagonal head screws and slotted semi-circular head screws with lugs, to ensure accurate dimensions and improve ease of operation.
It improved the efficiency of disassembling and installing aircraft cable clamps, reduced quality and safety risks, reduced rubber pad waste, and ensured installation quality.
Smart Images
Figure CN224310540U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aviation equipment technology, specifically a set of special tools for disassembling and installing aircraft cable clamps. Background Technology
[0002] Padged clamps with shock-absorbing holes are widely used for securing aircraft cables due to their shock-resistant, insulating, and high / low temperature resistant properties. The clamp is encased in a rubber pad to prevent direct contact between the wire and the clamp's metal parts. Screws (or bracket studs) and threaded hexagonal self-locking nuts (or bracket nuts) are used to clamp and secure the clamp to the aircraft fuselage. During aircraft overhauls, the clamps need to be disassembled, repaired, and then reinstalled. Because the working and storage environment of aircraft is relatively harsh, and aircraft undergoing overhauls have reached the end of their flight life, some rubber pads may be broken. Therefore, during the reinstallation of the clamps after cable repairs, the rubber pads need to be replaced. Furthermore, during overhauls, some aircraft models may have their clamp rubber pads replaced with different colored pads due to process requirements. While aviation standards dictate that clamps have standard dimensions, the rubber pad dimensions are relatively fixed. However, during replacement, operators rely on experience to cut the pads, making precise measurements difficult and easily resulting in pads that are too long or too short. Insufficient dimensions can easily cause the cable to come into direct contact with the clamp, which can easily cause cable wear due to the high-frequency vibration during aircraft operation. On the other hand, excessively long rubber pads can lead to waste and greatly increase the difficulty of installation, resulting in poor installation quality.
[0003] Due to the special nature of aviation equipment, clamps, except for those using bracket studs and bracket nuts for fixing, are all secured using screws with self-locking nuts. Therefore, two tools are required during disassembly and installation: one for securing the screws, and the other for removing or installing the self-locking nuts. The screws used for clamping are generally divided into two categories: flathead hexagonal head screws and flathead semi-round head screws. Flathead semi-round head screws are mostly used for clamps with lugs. Previously, flathead hexagonal head screws were mostly secured using traditional wrenches or sockets, but the space on aircraft is often extremely confined, making traditional sockets or wrenches ineffective. Flathead semi-round head screws used for clamps with lugs, due to space constraints and the material of the clamp itself, experience greater stress during disassembly and installation. Traditionally, only flathead screwdrivers can be used for fixing, which is extremely inconvenient and poses a risk of slippage causing injury or damage to the aircraft's quality and safety. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model proposes a set of specialized tools for the disassembly and installation of aircraft cable clamps. It can cut rubber pads according to the clamp's dimensions and solves the problem of difficult disassembly and installation of slotted hexagonal head screws and slotted semi-circular head screws with lugs in confined spaces, reducing quality and safety risks and improving the efficiency of cable clamp disassembly and installation during major overhauls.
[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:
[0006] A set of specialized tools for disassembling and installing aircraft cable clamps, including:
[0007] Cutting tools are used for standardized cutting when replacing clamp rubber pads to ensure that the clamp rubber pads meet the installation requirements;
[0008] Disassembly and assembly tools are used to disassemble and install flat-slotted hex head screws on clamps in confined spaces;
[0009] Clamping tools are used to remove and install flathead screws with lugs in confined spaces.
[0010] As a further improvement of this utility model, the cutting tool includes cutting scissors, a ruler, a stop block and a guide rail slider set on the ruler, and the ruler is rotatably connected to the cutting scissors for easy retraction and carrying.
[0011] As a further improvement of this utility model, the ruler is rotatably connected to the cutting scissors via an eccentric shaft, and after the ruler is fully rotated and unfolded, it is perpendicular to the cutting line on the cutting scissors.
[0012] As a further improvement of this utility model, a fastening screw is provided on the guide rail slider, which is used to press against the scale to fix the guide rail slider.
[0013] As a further improvement of this utility model, the disassembly and assembly tool includes a disassembly and assembly end and a disassembly and assembly handle with an integral structure, and the disassembly and assembly end is provided with a disassembly and assembly clamp.
[0014] As a further improvement of this utility model, the disassembly and assembly tool is made of steel with a thickness of 5mm, the length of the disassembly and assembly end is 40mm, the width of the disassembly and assembly end is 10mm, the length of the disassembly and assembly handle is 138mm, and the width of the disassembly and assembly clamp is 8mm.
[0015] As a further improvement of this utility model, the included angle between the disassembly end and the disassembly handle is 120°.
[0016] As a further improvement of this utility model, the clamping tool is a clamping structure, with screw slot blocks and clamping blocks arranged in opposite directions at the clamping end. The screw slot blocks, clamping blocks and clamping tools are an integral structure.
[0017] As a further improvement of this utility model, the clamping block has a semi-circular structure with an inner diameter of 13mm.
[0018] The beneficial effects of this utility model are:
[0019] This utility model provides a set of special tools for the disassembly and installation of aircraft cable clamps. By setting up three special tools, it is used for the disassembly and installation of aircraft cable clamps: a cutting tool is used to solve the problem of cutting rubber pads, ensuring that the rubber pads are the right size, ensuring the installation quality of the clamps, and reducing waste to a certain extent; the disassembly and clamping tools are used for the disassembly and installation of slotted hexagonal head screws and slotted semi-circular head screws with lugs in narrow spaces, which is convenient, quick and greatly improves the installation efficiency. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the cutting tool in this utility model;
[0023] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;
[0024] Figure 4 This is a schematic diagram of the ruler in a cutting tool.
[0025] Figure 5 This is a schematic diagram of the disassembly and assembly tool in this utility model;
[0026] Figure 6 This is a schematic diagram of the clamping tool in this utility model;
[0027] Figure 7 for Figure 6 Enlarged structural diagram at point B;
[0028] Figure 8 This is a structural diagram illustrating the use of the disassembly and assembly tools.
[0029] Figure 9 for Figure 8 Enlarged structural diagram at point C;
[0030] Figure 10 This is a schematic diagram of the clamping tool in use;
[0031] Figure 11 for Figure 10 Enlarged structural diagram at point D.
[0032] In the diagram: 1. Cutting tools; 101. Cutting scissors; 102. Ruler; 103. Fastening screws; 104. Stop block; 105. Guide rail slider; 106. Eccentric shaft; 2. Disassembly and assembly tools; 201. Disassembly and assembly end; 202. Disassembly and assembly handle; 203. Disassembly and assembly clamp; 3. Clamping tools; 301. Screw slot block; 302. Clamping block; 4. Flathead hexagonal head screw; 5. Flathead semi-circular head screw; 6. Self-locking nut; 7. Clamp; 8. Clamp with lugs; 9. Structural profile. Detailed Implementation
[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] like Figure 1 As shown, a set of special tools for disassembling and installing aircraft cable clamps includes cutting tool 1, disassembly and assembly tool 2, and clamping tool 3.
[0035] The cutting tool 1 is used for standardized cutting when replacing the clamp rubber pad to ensure that the clamp rubber pad meets the installation requirements. The disassembly tool 2 is used to disassemble the slotted hex head screw 4 on the clamp 7 installed in a confined space. The clamping tool 3 is used to disassemble the slotted semi-circular head screw 5 on the lug clamp 8 installed in a confined space.
[0036] As a further improvement to this embodiment, such as Figure 2 and Figure 3 As shown, the cutting tool 1 includes cutting scissors 101, a ruler 102, a fastening screw 103, a stop block 104, and a guide rail slider 105.
[0037] The clamps have standard sizes; the clamps commonly used in aircraft cable assembly are Φ4~Φ80. Therefore, a dual-range dedicated scale 102 was designed, with the following structure: Figure 4As shown, for a standard clamp with a measuring range of Φ40, due to the softness of the rubber pad material, within the error range, a single fold can cut rubber pads suitable for Φ80 clamps. For cutting rubber pads used with arched clamps or other non-standard components, the measuring range is 130mm. The scale 102 is rotatably connected to the cutting scissors 101 via an eccentric shaft 106, and can be easily carried after being rotated and folded. The stop block 104 is set on the scale 102, ensuring that after the scale 102 is fully unfolded during the cutting process, it can be positioned perpendicular to the cutting line of the cutting scissors 101. To ensure that the cut rubber pads are of standard size and straight, the guide rail slider 105 is slidably mounted on the scale 102, and the fastening screw 103 is set on the guide rail slider 105. When a large number of cuts of the same size are required, the fastening screw 103 can fix the guide rail slider 105 on the scale 102. To prevent the guide rail slider 105 from damaging the scale 102 during sliding, the guide rail slider 105 is only clamped to both sides of the scale 102.
[0038] As a further improvement to this embodiment, such as Figure 5 As shown, the disassembly / assembly tool 2 is made of steel with a thickness of 5mm. It includes a disassembly / assembly end 201 and a disassembly / assembly handle 202, both of which are integral structures. The disassembly / assembly end 201 is provided with a disassembly / assembly clamp 203. To ensure usability in extreme scenarios, the width L2 of the disassembly / assembly end 201 is 10mm, which is smaller than the length of a commonly used minimum screw. The opening length L3 of the disassembly / assembly clamp 203 is 8mm, which is the size of a commonly used M8 head screw. The length L1 of the disassembly / assembly end 201 is 40mm, and the usable length L4 of the disassembly / assembly handle 202 is 138mm. The angle between the disassembly / assembly end 201 and the disassembly / assembly handle 202 is 120° for easy gripping. Furthermore, the end of the tool 2 has an opening for storage methods such as hanging.
[0039] As a further improvement to this embodiment, such as Figure 6 and Figure 7 As shown, the clamping tool 3 is a clamp structure. The clamping end of the clamping tool 3 is provided with oppositely distributed screw slot blocks 301 and clamping blocks 302. The screw slot blocks 301, clamping blocks 302, and clamping tool 3 are an integral structure. The screw slot blocks 301 serve to fix the slotted semi-circular screw, and are engaged in use within the slot of the slotted semi-circular screw. The clamping blocks 302 are semi-circular in design and are used to clamp the lug clamp 8. The inner diameter of the clamping blocks 302 is 13mm, which is larger than the outer diameter of the M8 sleeve, so that while clamping the lug clamp 8, it does not hinder the use of the sleeve to install and remove the self-locking nut 6.
[0040] Working principle and usage process of this utility model:
[0041] When using, fully unfold the ruler 102 on the cutting tool 1. For clamps smaller than Φ40, slide the guide slider 105 to the corresponding position according to the clamp size, align the side closer to the scissors with the scale line on the ruler 102, press one end of the clamp rubber pad tightly against the side of the guide slider 105 closest to the scissors, and then cut. For clamps larger than Φ40, align the side of the guide slider 105 away from the scissors with the scale line on the ruler 102, then press one end of the clamp rubber pad close to the side of the guide slider 105 away from the scissors, fold it in half at the Φ40 position, and then cut with the cutting scissors 101. For arched installation clamps or other non-standard clamps, the size is based on the actual length; use the ruler 102 to position the guide slider 105 before cutting. For a large number of clamp rubber pads of the same size that need to be cut, the guide slider 105 can be tightened with the fastening screw 103 before batch cutting.
[0042] like Figure 8 and Figure 9 As shown, when using it, after clamping the disassembly and assembly clamp 203 on the disassembly and assembly tool 2 with the slotted hexagonal head screw 4, use a conventional wrench or socket to disassemble and assemble the self-locking nut 6.
[0043] like Figure 10 and Figure 11 As shown, when using it, insert the screw slot block 301 on the clamping tool 3 into the slot of the flathead screw 5, hold the clamping tool 3 with one hand, so that the semi-circular clamping block 302 clamps the ear clamp 8 and the flathead screw 5, and then use the socket to install or remove the self-locking nut 6.
[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A set of specialized tools for disassembling and installing aircraft cable clamps, characterized in that: include: Cutting tool (1) is used for standardized cutting when replacing clamp rubber pads to ensure that clamp rubber pads meet installation requirements; Disassembly and assembly tool (2) is used to disassemble and install slotted hex head screws (4) on clamps (7) in confined spaces; Clamping tool (3) for removing and installing flathead screws (5) on ear clamps (8) in confined spaces.
2. The set of special tools for disassembling and installing aircraft cable clamps according to claim 1, characterized in that: The cutting tool (1) includes cutting scissors (101), a ruler (102), a stop (104) and a guide slider (105) set on the ruler (102). The ruler (102) is rotatably connected to the cutting scissors (101) for easy retraction and carrying.
3. The set of special tools for disassembling and installing aircraft cable clamps according to claim 2, characterized in that: The ruler (102) is rotatably connected to the cutting scissors (101) via an eccentric shaft (106). After the ruler (102) is fully rotated and unfolded, it is perpendicular to the cutting line on the cutting scissors (101).
4. A set of special tools for disassembling and installing aircraft cable clamps according to claim 2, characterized in that: The guide rail slider (105) is provided with a fastening screw (103), which is used to press against the scale (102) to fix the guide rail slider (105).
5. A set of special tools for disassembling and installing aircraft cable clamps according to claim 1, characterized in that: The disassembly and assembly tool (2) includes a disassembly and assembly end (201) and a disassembly and assembly handle (202) with an integral structure. The disassembly and assembly end (201) is provided with a disassembly and assembly clamp (203).
6. A set of special tools for disassembling and installing aircraft cable clamps according to claim 5, characterized in that: The disassembly and assembly tool (2) is made of steel with a thickness of 5mm. The length of the disassembly and assembly end (201) is 40mm, the width of the disassembly and assembly end (201) is 10mm, the length of the disassembly and assembly handle (202) is 138mm, and the width of the disassembly and assembly clamp (203) is 8mm.
7. A set of special tools for disassembling and installing aircraft cable clamps according to claim 5, characterized in that: The angle between the disassembly end (201) and the disassembly handle (202) is 120°.
8. A set of special tools for disassembling and installing aircraft cable clamps according to claim 1, characterized in that: The clamping tool (3) is a clamping structure, with screw slot blocks (301) and clamping blocks (302) arranged in opposite directions at the clamping end. The screw slot blocks (301), clamping blocks (302) and clamping tool (3) are an integral structure.
9. A set of special tools for disassembling and installing aircraft cable clamps according to claim 8, characterized in that: The clamping block (302) has a semi-circular structure with an inner diameter of 13mm.