Flexible joint external lap wire bending tool for aviation pipeline

Abstract

The utility model discloses a flexible clamp electrically connects silk bending clamping frock, including left, right mounting chuck, movable push plate, adjustable rotating handle. The frock is by left mounting chuck, right mounting chuck, movable push plate and adjustable rotating handle constitute. Among them, left, right mounting chuck is for the limiting mechanism. Its function is to cooperate with the flexible connector clamp assembly, to ensure the accurate positioning of the clamp, and different specifications of the clamp need to replace different frock. Significantly shorten the frok clamping time, solve the tedious operation of manual positioning support force and multiple steps, tooling operation effectively avoids the direct contact of operator's hand and sharp metal, causes human body harm, improves work efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of aviation pipeline system connectors, specifically to a flexible connector for aviation pipelines with external lap wire bending tooling. Background Technology

[0002] In aviation piping low-pressure systems, flexible joints are often used for connection. Flexible joints have a certain axial and angular compensation capability, which can effectively eliminate the stress generated by the conduit connection. Flexible joints are generally composed of a sleeve, a sealing ring, and a clamp. The lap wire, as a structural device for clearing pipeline current and preventing the accumulation of static charge, is an indispensable and important component of the clamp.

[0003] The installation position of the external lap wire on the clamp is as follows: Figure 1 As shown. The lap wire typically employs a polygonal, meandering design with multiple contact points with the pipe sleeve, exhibiting strong electrical conductivity and providing a certain clamping force. The lap wire connects to the pin on the mounting plate and is fixed to the clamp assembly, communicating with all metal parts within the clamp assembly via the pin, resulting in a compact structure. To meet the lightweight requirements of flexible joints, the lap wire diameter is usually relatively thin, commonly ranging from 0.6mm to 1mm.

[0004] Bending the ends of the lap wire, as the final step in riveting lap wire clamps, has long relied on manual bending by workers using flat-bladed tools such as files. This method suffers from drawbacks such as inconsistent bending accuracy, easy damage to the lap wire and clamp, time-consuming and labor-intensive process, low bending efficiency, and poor consistency in bending results. To improve the bending efficiency of external lap wires, reduce the labor intensity of operators, and enhance the consistency of bending results, a high-efficiency bending fixture for external lap wires of flexible joints is proposed.

[0005] Currently, bending of the outer lap joint wires relies on manual bending by the operator. See details. Figure 2 and Figure 3 The specific bending method and steps are as follows: Step 1: Secure the clamp: The operator secures the clamp to the vise with the hook facing upwards, in a position that facilitates bending; Step 2: Adjust position: The operator holds the file and adjusts the point of force to a suitable bending point; Step 3: Apply inward force: The operator applies force to bend the end of the lap wire toward the locking hook side; Step 4: Complete the bend: Complete the bend and check the bend effect.

[0006] Step 5: Repeat steps 1 to 4 four times to complete the bending of the other hook face lap wire ends in sequence.

[0007] like Figure 3As shown, after bending the four overlapping wire ends on the hook face, loosen the clamp, rotate the clamp 180° so that the hinge face is facing upwards, and re-fix it to the clamp. Repeat the above bending steps four times. After eight bends, a complete clamp with bent overlapping wires is obtained.

[0008] Current problems with bending of lap wires: 1. Experience required: The bending process of the lap wire relies entirely on the operator's manual force to bend the lap wire. Excessive force can easily scratch the retaining ring, while insufficient force cannot meet the bending requirements. 2. Low consistency: The effect of bending the lap wire is not consistent enough. The bending degree of the two ends of the same lap wire is different, which has an adverse effect on the standardization process of the clamp. 3. High time cost: Each clamp needs to be manually clamped multiple times. The outer lap joint clamp needs to be bent 8 times to complete the bending, and the inner lap joint clamp needs to be bent 4 times to complete the bending. The bending and clamping process and the bending process are time-consuming. 4. High operational requirements: Currently, the bending of the lap wire relies on the operator to perform each step manually, which places high demands on the operator's skills and results in high labor intensity. Summary of the Invention

[0009] Based on the problems existing in the current lap wire bending process, it is proposed to find a more efficient and labor-saving bending equipment (tooling) that can effectively improve the bending efficiency of lap wire, reduce the labor intensity of operators, and improve the consistency of bending effect.

[0010] Specifically, this utility model provides a bending fixture for external lap wires of flexible joints used in aviation pipelines, including a left mounting chuck, a right mounting chuck, a movable push plate, and an adjustable rotating handle. The left and right mounting chucks are coaxially opposite each other, limiting the position of the flexible joint clamp assembly. On the inner sides of the left and right mounting chucks, coaxially opposite fixing blocks one and two are respectively provided. Fixing block one is perpendicular to the inner surface of the left mounting chuck body. A limiting block is provided at the end of the left mounting chuck away from fixing block one, and the limiting block is perpendicular to the inner surface of the left mounting chuck body. The left mounting chuck body... A slot 1 is provided on the inner side of the limiting block perpendicular to the limiting block. A through hole is provided on the right end face of the limiting block, which is parallel to the inner surface of the left mounting chuck body. The fixing block 2 is perpendicular to the inner surface of the right mounting chuck body. A slot 2 is provided on the end of the right mounting chuck away from the fixing block 2, which is opposite to the slot 1. The movable push plate has a convex cross-section. The wide end of the convex structure is the limiting part, and the narrow end is the pushing part. The two sides of the limiting part are respectively placed in slot 1 and slot 2. The end of the limiting part abuts against the inner surface of the limiting block. The adjustable rotating handle includes a fixing mechanism and a handle. The fixing mechanism is fixed in place with the through hole.

[0011] The bottom of the propulsion section is equipped with a groove, and the top surface of the groove prevents interference with the locking hook, ensuring the smooth progress of the bending process.

[0012] Both fixing block one and fixing block two are columnar structures. Fixing block one has a positioning hole one in the center and fixing block two has a positioning hole two in the center, which are coaxial to ensure the precise positioning of the flexible clamp and prevent the clamp from deforming during processing.

[0013] The left and right mounting chucks are limit mechanisms. Their function is to cooperate with the flexible connector clamp assembly to ensure the precise positioning of the clamp. Different clamp specifications require different tooling.

[0014] The movable push plate serves as a clamping mechanism, which clamps of different specifications by moving an appropriate distance.

[0015] An adjustable rotary handle is used to adjust the position of the movable push plate.

[0016] Fix the clamp to be bent between the left and right mounting chucks and position it using the positioning hole in the middle of the chucks. Then, shake the adjustable rotary handle to move the movable push plate forward and bend the lap wire by the pushing force of the movable push plate.

[0017] The adjustable rotary handle can be manually rotated to clamp the workpiece, or the fixing mechanism can be connected to a cylinder or hydraulic cylinder as a power source to push the adjustable push plate to clamp the workpiece.

[0018] This technical solution is a high-precision, integrated "positioning-clamping-bending" fixture structure that improves the consistency of bending results. The mounting chuck, which matches the shape of the flexible joint, ensures positioning accuracy. The clamping fixture is a detachable structure, which can be adapted to workpieces of different specifications by replacing the left and right mounting chucks of different specifications.

[0019] The beneficial effects of this utility model are: 1. This technical solution adopts a rapid positioning and clamping device, which significantly shortens the workpiece clamping time, solves the tedious operation of multiple steps such as manual positioning, support and force application, significantly shortens the processing time of a single product, and improves efficiency several times; it also reduces the skill requirements of operators, improves bending consistency, and effectively reduces material loss.

[0020] 2. Since all products are manufactured under the same standard and have highly uniform dimensions, it ensures good interchangeability of similar parts in aircraft maintenance and assembly, meeting the standardization requirements of the aviation industry.

[0021] 3. By designing replaceable positioning modules and bending tools, a set of tooling can be adapted to various models of aviation pipeline flexible connectors and different specifications of lap wires, with strong expandability and wide application range.

[0022] 4. Mechanical construction replaces manual labor, and tool-based operation effectively avoids direct contact between the operator's hands and sharp metal, preventing scratches and solving the problem of personal injury that may be caused by tool slippage or excessive force when bending by hand. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments conforming to the present invention and, together with the description, serve to explain the principles of the present invention. It is obvious that the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0024] Figure 1 This is a schematic diagram of the flexible joint that needs to be processed according to this utility model; Figure 2 A schematic diagram of the existing technology for bending the hook surface of the external splice wire; Figure 3 This is a schematic diagram of the existing technology for bending the hinge surface of the external splice wire. Figure 4 A schematic diagram of the external lap wire bending fixture structure for the flexible joint for aviation pipelines provided by this utility model. Figure 5 A schematic diagram of another direction of the external lap wire bending fixture for the flexible joint for aviation pipelines provided by this utility model. Figure 6 A schematic diagram of the left mounting chuck structure provided by this utility model; Figure 7 This is a schematic diagram of the right mounting chuck structure provided by this utility model; Figure 8 A schematic diagram of the movable push plate structure provided by this utility model; Figure 9 This is a schematic diagram of the adjustable rotating handle structure provided by this utility model; Wherein: 1-Left mounting chuck, 101-Fixing block one, 102-Limiting block, 103-Card slot one, 104-Through hole, 105-Positioning hole one, Right mounting chuck, 201-fixing block two, 202-slot two, 203-positioning hole two, Movable push plate, 301-limiting part, 302-propulsion part, 303-groove 4-Adjustable rotating handle, 401-Fixing mechanism, 402-Handle. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Please see Figure 3-9 The figure shows a schematic diagram of the external lap wire bending fixture structure for flexible joints in aviation pipelines provided by this utility model. It includes a left mounting chuck 1, a right mounting chuck 2, a movable push plate 3, and an adjustable rotating handle 4. The left mounting chuck 1 and right mounting chuck 2 are coaxially opposite each other, limiting the position of the flexible joint clamp assembly. On the inner sides of the left mounting chuck 1 and right mounting chuck 2, coaxially opposite fixing blocks 101 and 201 are respectively provided. Fixing block 101 is perpendicular to the inner side of the left mounting chuck 1. A limiting block 102 is provided at the end of the left mounting chuck 1 away from fixing block 101. The limiting block 102 is perpendicular to the inner side of the left mounting chuck 1. The inner side of the left mounting chuck 1 body at the perpendicular angle to the limiting block 102 is provided with... The system includes a slot 103, a limiting block 102 with a through hole 104 near its right end face parallel to the inner surface of the left mounting chuck 1; a fixing block 201 perpendicular to the inner surface of the right mounting chuck 2, with a slot 202 at the end of the right mounting chuck 2 away from the fixing block 201, opposite to slot 103; a movable push plate 3 with a convex cross-section, the wide end of which is a limiting part 301 and the narrow end is a pushing part 302, the two sides of the limiting part 301 respectively placed in slot 103 and slot 202, the end of the limiting part 301 abutting against the inner surface of the limiting block 102; an adjustable rotating handle 4 including a fixing mechanism 401 and a handle 402, the fixing mechanism 401 being fixed in place with the through hole 104; a groove 303 at the bottom of the pushing part 302, the top surface of which prevents interference with the locking hook.

[0027] Both the first fixing block 101 and the second fixing block 201 are columnar structures. The first fixing block 101 has a positioning hole 105 at its center, which is coaxial with the second fixing block 201 has a positioning hole 203 at its center. This allows for precise positioning of the flexible clamp. All products are processed under the same datum, with uniform dimensions and height, ensuring good interchangeability of similar parts in aircraft maintenance and assembly, and meeting the standardization requirements of the aviation industry.

[0028] The adjustable rotary handle 4 can be manually pushed forward by the rotary handle 402, or automatically rotated and pushed forward by the fixed mechanism 401 connected to the cylinder or hydraulic cylinder.

[0029] The left mounting chuck 1 and right mounting chuck 2 are limiting mechanisms, coaxial and opposite each other. Their function is to cooperate with the flexible joint clamp assembly to ensure the precise positioning of the clamp. The movable push plate 3 is a bending and tightening mechanism, which tightens and bends clamps of different specifications by moving an appropriate distance. The adjustable rotary handle 4 is used to adjust the position of the movable push plate.

[0030] The workflow is as follows: The clamp to be bent is fixed between the left mounting chuck 1 and the right mounting chuck 2, and fixed on fixing block 101 and fixing block 201. Positioning is achieved using positioning hole 105 and positioning hole 203. Then, the adjustable rotary handle 4 is turned to move the left mounting chuck 1 forward, which in turn moves the movable push plate 3 forward. The pushing force of the movable push plate causes the pushing part 302 to bend the opposite overlapping wire. Then, it is rotated 180 degrees, repositioned, and the movable push plate 3 is pushed to bend the opposite overlapping wire on the other side. After the overlapping wire end on the hook face is bent, the overlapping wire end on the hinge face is bent. The processing time for a single product is significantly shortened, and efficiency is increased several times. Furthermore, the skill requirements for operators are reduced, bending consistency is improved, and material loss is effectively reduced.

[0031] This technical solution is an integrated, high-precision, specialized tooling structure that combines positioning, clamping, and bending, improving the consistency of bending results. The mounting chuck, matching the shape of the flexible joint, ensures positioning accuracy. The clamping fixture is detachable, allowing for adaptation to different workpiece sizes by replacing the left and right mounting chucks of varying specifications. Mechanical construction replaces manual labor, and tool-based operation effectively avoids direct contact between the operator's hands and sharp metal, preventing cuts and resolving the potential personal injury issues caused by tool slippage or excessive force during manual bending. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, are all covered within the scope of the claims of this utility model.

Claims

1. A bending fixture for external lap wires of flexible joints used in aviation pipelines, characterized in that: The assembly includes a left mounting chuck (1), a right mounting chuck (2), a movable push plate (3), and an adjustable rotating handle (4). The left mounting chuck (1) and the right mounting chuck (2) are coaxially opposite to each other and limit the flexible joint clamp assembly. The inner sides of the left mounting chuck (1) and the right mounting chuck (2) are respectively provided with coaxially opposite fixing blocks one (101) and fixing blocks two (201). Fixing block one (101) is perpendicular to the inner side of the body of the left mounting chuck (1). The end of the left mounting chuck (1) away from fixing block one (101) is provided with a limiting block (102). The limiting block (102) is perpendicular to the inner side of the body of the left mounting chuck (1). The inner side of the left mounting chuck (1) with the perpendicular angle between the body of the left mounting chuck (1) and the limiting block (102) is provided with a slot one (103). The limiting block (102) is close to the right... The end face is provided with a through hole (104) parallel to the inner side of the left mounting chuck (1) body; the second fixing block (201) is perpendicular to the inner side of the right mounting chuck (2) body, and the end of the right mounting chuck (2) away from the second fixing block (201) is provided with a second slot (202) opposite to the first slot (103); the movable push plate (3) has a convex cross-section, the wide end of the convex structure is a limiting part (301), and the narrow end is a pushing part (302). The two sides of the limiting part (301) are respectively placed in the first slot (103) and the second slot (202), and the end of the limiting part (301) abuts against the inner side of the limiting block (102). The adjustable rotating handle (4) includes a fixing mechanism (401) and a handle (402). The fixing mechanism (401) is fixed in conjunction with the through hole (104).

2. The flexible joint external lap wire bending fixture for aviation pipelines according to claim 1, characterized in that: The bottom of the propulsion section (302) is provided with a groove (303).

3. The flexible joint external lap wire bending fixture for aviation pipelines according to claim 1, characterized in that: Both the first fixing block (101) and the second fixing block (201) are columnar structures.

4. The flexible joint external lap wire bending fixture for aviation pipelines according to claim 1, characterized in that: The center of the first fixing block (101) has a positioning hole (105) and the center of the second fixing block (201) has a positioning hole (203) that are coaxial.

5. The flexible joint external lap wire bending fixture for aviation pipelines according to claim 1, characterized in that: The adjustable rotary handle (4) also includes a fixing mechanism (401) that connects to the cylinder and hydraulic cylinder as a power source for automatic rotation and propulsion.

Images