A flexible joint type clamp general dismounting tool in a narrow space and a use method thereof

Abstract

The present application belongs to the technical field of aircraft narrow space assembly, and discloses a kind of flexible joint class clamp general dismounting tool in narrow space and use method, it includes: calipers assembly, with split structure's calipers and with the embedded clasp of calipers matched use;Positioning clamping assembly, with The coaxial arrangement of calipers assembly;Guide rod, calipers assembly and positioning clamping assembly are connected together;Transmission rod, calipers assembly and positioning clamping assembly are connected together, and under the driving of transmission rod, calipers assembly can move along guide rod.The present application solves the problem of flexible joint class clamp dismounting, reduces the operation safety risk, greatly improves work efficiency, and ensures the dismounting work quality.

Description

Technical Field

[0001] This invention belongs to the field of aircraft confined space assembly technology, specifically relating to a universal tool for disassembling and assembling flexible joint clamps in confined spaces and its usage method. Background Technology

[0002] With the continuous development of the aviation industry, aircraft design is becoming more integrated, resulting in compact, complex local structures and limited installation space. This leads to limited space for disassembly and installation of some flexible joint parts during the production and assembly process, increased installation difficulty, and low installation efficiency.

[0003] Especially after oil passes through the pipeline, the rubber ring of the flexible joint clamp will expand. When disassembling or assembling the flexible joint clamp sleeve, the sleeve may become stuck in the pipeline. If personnel forcibly disassemble or assemble the flexible joint clamp, it is very easy to cause scratches, pinching injuries, or damage to the sleeve. Summary of the Invention

[0004] This invention addresses the problem of inconvenient disassembly and assembly of flexible joint clamps in existing aircraft assembly and production by providing a universal tool and method for disassembling and assembling flexible joint clamps in confined spaces, ensuring safe operation and improving work efficiency.

[0005] The technical solution of this invention is implemented as follows:

[0006] A universal tool for disassembling and assembling flexible joint clamps in confined spaces, comprising:

[0007] A caliper assembly having a split-type caliper and an embedded retaining ring for use with the caliper;

[0008] A positioning and clamping assembly is coaxially arranged with the caliper assembly;

[0009] A guide rod that connects the caliper assembly and the positioning clamping assembly together;

[0010] A drive rod connects the caliper assembly and the positioning clamping assembly together, and the caliper assembly can move along the guide rod under the drive of the drive rod.

[0011] As a further aspect of the present invention: the embedded retaining ring is a replaceable component, designed and manufactured according to different sizes of flexible joint clamps.

[0012] As a further aspect of the present invention: the caliper includes a first caliper portion and a second caliper portion, both the first caliper portion and the second caliper portion having an arc-shaped clamping portion and a gripping portion, and each of the first caliper portion and the second caliper portion having a hinge point on the arc-shaped clamping portion and the gripping portion.

[0013] As a further aspect of the present invention: the arc-shaped clamping portions of the first caliper and the second caliper are arranged opposite to each other, and the front ends of the arc-shaped clamping portions of the first caliper and the second caliper can be fitted together. A first flange is provided at the connection of the arc-shaped clamping portions of the first caliper and the second caliper, and a first through hole is provided on the first flange for threading the guide rod to form a hinge point.

[0014] As a further embodiment of the present invention: the front end of the arc-shaped clamping part of the first caliper is designed as a concave shape, and the front end of the arc-shaped clamping part of the second caliper is designed as a convex shape; or the front ends of the arc-shaped clamping parts of the first caliper and the second caliper are alternately provided with protrusions, which can be joined together.

[0015] As a further aspect of the present invention: the gripping parts of the first caliper and the second caliper are provided with a pair of first fixing lugs, and a pin hole is provided on the first fixing lugs. The two first fixing lugs are connected together by a pin to form a second hinge point.

[0016] As a further aspect of the present invention: a pair of second fixing lugs are provided on the gripping parts of the first caliper and the second caliper, and threaded holes are provided on the second fixing lugs, which are used in conjunction with the external threads on the transmission rod to form a lead screw and nut pair structure.

[0017] As a further aspect of the present invention: the positioning clamping assembly includes a first clamping part and a second clamping part, the first clamping part and the second clamping part are clamp-type structures, and the two are connected together by a bolt assembly.

[0018] As a further aspect of the present invention: a second flange is provided on the first clamping part, and a second through hole is formed on the second flange for threading the guide rod;

[0019] An extension rod is provided on the second clamping part, and a stepped hole is provided on the extension rod. A bearing is installed in the stepped hole with an interference fit, and the transmission rod passes through the bearing.

[0020] A method for using a universal tool for disassembling and assembling flexible joint clamps in confined spaces includes the following steps:

[0021] Select an embedded retaining ring of appropriate size and fit it onto the flexible joint type clamp;

[0022] The first clamping part and the second clamping part are snapped onto the clamped pipe and connected together by a bolt assembly;

[0023] The first caliper and the second caliper are positioned opposite each other on the embedded retaining ring, and the pin is inserted into the pin hole;

[0024] The caliper assembly and the positioning clamping assembly are connected together using a transmission rod and a guide rod, respectively.

[0025] The operator holds the caliper with one hand and the handle of the transmission rod with the other. By rotating the transmission rod, the caliper assembly is moved along the guide rod, thereby performing the disassembly and assembly work.

[0026] The beneficial effects of this application are as follows:

[0027] 1. Based on the different retaining ring parameters of flexible joints, this application designs and manufactures different replaceable embedded retaining rings that match them. By replacing the embedded retaining rings, the application achieves universality and can be applied to the assembly and disassembly of flexible joint clamps of different sizes.

[0028] 2. Based on the shape, size and installation environment of the flexible joint, this application allows for the use of specially designed and manufactured clamps and calipers, which greatly improves the operability of assembling and disassembling the flexible joint.

[0029] 3. This application uses a transmission screw in the transmission part to enable continuous operation for a longer period of time, with high transmission accuracy. The thread is set as a trapezoidal thread with a tooth angle of 30°, which has good manufacturability, high root strength, and good centering.

[0030] 4. The universal disassembly and assembly tool for flexible joint clamps in confined spaces disclosed in this application is easy to install and disassemble, and can ensure the personal safety of operators, prevent damage to flexible joint clamps caused by uneven force, reduce operational safety risks, greatly improve work efficiency, and ensure the quality of disassembly and assembly work.

[0031] The present application will be further described in detail below with reference to the accompanying drawings of the embodiments. Attached Figure Description

[0032] Figure 1 A schematic diagram of a universal disassembly and assembly tool for flexible joint clamps in confined spaces;

[0033] Figure 2 A schematic diagram illustrating the use of a universal tool for disassembling and assembling flexible joint clamps in confined spaces;

[0034] Figure 3 for Figure 1 Schematic diagram of the caliper structure;

[0035] Figure 4 for Figure 1 Schematic diagram of the first caliper section;

[0036] Figure 5 for Figure 1 Schematic diagram of the second caliper section;

[0037] Figure 6 for Figure 1Schematic diagram of the positioning clamping bracket assembly.

[0038] The numbers in the diagram are explained as follows: Caliper assembly 1, Positioning and clamping assembly 2, Guide rod 3, Transmission rod 4, Pipeline 5, Embedded retaining ring 10, First caliper part 11, Second caliper part 12, Arc-shaped clamping part 13, Grip part 14, First flange 15, First through hole 150, First fixing lug 16, Pin hole 160, Pin 161, Second fixing lug 17, Threaded hole 170, First clamping part 21, Second clamping part 22, Bolt 23, Wing nut 24, Second flange 25, Second through hole 250, Extension rod 26, Stepped hole 260, Bearing 27, Dust cover 28, Bending part 40, Handle 41. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0040] The following is in conjunction with the appendix Figure 1-6 The embodiments of the present invention will be described in detail below.

[0041] Example 1

[0042] This invention provides a universal tool for disassembling and assembling flexible joint clamps in confined spaces, comprising:

[0043] The caliper assembly 1 has a split-type caliper and an embedded retaining ring 10 used in conjunction with the caliper; a positioning and clamping assembly 2 is arranged coaxially and parallel to the caliper assembly 1; a guide rod 3 connects the caliper assembly 1 and the positioning and clamping assembly 2 together; and a transmission rod 4 connects the caliper assembly 1 and the positioning and clamping assembly 2 together, and the caliper assembly 1 can move along the guide rod 3 under the drive of the transmission rod 4.

[0044] The embedded retaining ring 10 is a replaceable component, designed and manufactured according to different sizes of flexible joint clamps. Generally, the outer diameter of the embedded retaining ring 10 is adapted to the inner diameter of the jaws of the caliper.

[0045] The caliper includes a first caliper part 11 and a second caliper part 12. Both the first caliper part 11 and the second caliper part 12 are integral structural components, each having an arc-shaped clamping part 13 and a gripping part 14. The jaws formed by the two arc-shaped clamping parts 13 are adapted to the embedded retaining ring 10. The first caliper part 11 and the second caliper part 12 each have a hinge point on the arc-shaped clamping part 13 and the gripping part 14. Under the fixing action of the two hinge points, the first caliper part 11 and the second caliper part 12 form a tight connection with the embedded retaining ring 10. This facilitates the assembly and disassembly of flexible joint clamps. Various sizes of flexible joint clamps can be assembled and disassembled by pressing the replaceable embedded retaining ring 10 against the jaws of the caliper. The second fixing lug 17 extending from the gripping part 14 of the first caliper part 11 and the second caliper part 12 transmits force along the axial direction of the clamping pipe 5 through the transmission rod 4.

[0046] The arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12 are arranged opposite to each other, and the front ends of the arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12 can be fitted together. A first flange 15 is provided at the connection of the arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12. A first through hole 150 is provided on the first flange 15 for threading the guide rod 3 through, forming a hinge point.

[0047] The front end of the arc-shaped clamping part 13 of the first caliper part 11 is designed as a concave shape, and the front end of the arc-shaped clamping part 13 of the second caliper part 12 is designed as a convex shape, and the front ends of the two are just joined together.

[0048] The first caliper portion 11 and the second caliper portion 12 have a pair of first fixing lugs 16 on their gripping portions 14. A pin hole 160 is formed on each of the first fixing lugs 16, and a pin 161 is used to connect the two first fixing lugs 16 together, forming a second hinge point. The two first fixing lugs 16 can adopt an interlocking fit structure (similar to a V-shaped structure); or they can adopt a concave-convex fit structure, as shown in the attached figure.

[0049] A pair of second fixing lugs 17 are also provided on the gripping portions 14 of the first caliper portion 11 and the second caliper portion 12. At least one of the second fixing lugs 17 has a threaded hole 170, which engages with the external thread on the transmission rod 4 to form a screw-nut pair structure. The second fixing lugs 17 extending to achieve the transmission function are provided with trapezoidal internal threads, and the transmission rod 4 is provided with trapezoidal external threads that match the second fixing lugs 17. The trapezoidal thread tooth angle is set to 30°, resulting in good manufacturability, high root strength, and excellent centering. The two second fixing lugs 17 can adopt an interlocking fit structure design (similar to a cross-shaped structure); or they can adopt a concave-convex fit structure design, as shown in the attached figure.

[0050] The gripping parts 14 of the first caliper part 11 and the second caliper part 12 are provided with a pair of first fixing lugs 16 to achieve the fixing function. These lugs can be fixed by a pin 161, so that the radial force borne by the caliper is distributed on the pin 161, thereby reducing the radial force borne by the transmission part.

[0051] The positioning clamping assembly 2 includes a first clamping part 21 and a second clamping part 22. The first clamping part 21 and the second clamping part 22 are clamp-type structures and are connected together by a bolt assembly. The bolt assembly includes a bolt 23 and a nut. In this embodiment, the nut is a wing nut 24 for easy use.

[0052] A second flange 25 is provided on the first clamping part 21, and a second through hole 250 is provided on the second flange 25 for threading the guide rod 3; on the basis of ensuring that the positioning clamping assembly 2 and the caliper assembly 1 are coaxially and parallel, the first flange 15 and the second flange 25 should also be coaxially arranged to facilitate threading the guide rod 3.

[0053] An extension rod 26 is provided on the second clamping part 22, and a stepped hole 260 is provided on the extension rod 26. A bearing 27 is installed in the stepped hole 260 with an interference fit, and the transmission rod 4 passes through the bearing 27. In this embodiment, the bearing 27 is a deep groove ball bearing 27. After installing the deep groove ball bearing 27, a dust cover 28 also needs to be installed to reduce axial movement.

[0054] Example 2

[0055] This invention provides a universal tool for disassembling and assembling flexible joint clamps in confined spaces, comprising:

[0056] The caliper assembly 1 has a split-type caliper and an embedded retaining ring 10 used in conjunction with the caliper; a positioning and clamping assembly 2 is arranged coaxially and parallel to the caliper assembly 1; a guide rod 3 connects the caliper assembly 1 and the positioning and clamping assembly 2 together; and a transmission rod 4 connects the caliper assembly 1 and the positioning and clamping assembly 2 together, and the caliper assembly 1 can move along the guide rod 3 under the drive of the transmission rod 4.

[0057] The embedded retaining ring 10 is a replaceable component, designed and manufactured according to different sizes of flexible joint clamps. Generally, the outer diameter of the embedded retaining ring 10 is adapted to the inner diameter of the jaws of the caliper.

[0058] The caliper includes a first caliper part 11 and a second caliper part 12. Both the first caliper part 11 and the second caliper part 12 are integral structural components, each having an arc-shaped clamping part 13 and a gripping part 14. The jaws formed by the two arc-shaped clamping parts 13 are adapted to the embedded retaining ring 10. The first caliper part 11 and the second caliper part 12 each have a hinge point on the arc-shaped clamping part 13 and the gripping part 14. Under the fixing action of the two hinge points, the first caliper part 11 and the second caliper part 12 form a tight connection with the embedded retaining ring 10. This facilitates the assembly and disassembly of flexible joint clamps. Various sizes of flexible joint clamps can be assembled and disassembled by pressing the replaceable embedded retaining ring 10 against the jaws of the caliper. The second fixing lug 17 extending from the gripping part 14 of the first caliper part 11 and the second caliper part 12 transmits force along the axial direction of the clamping pipe 5 through the transmission rod 4.

[0059] The arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12 are arranged opposite to each other, and the front ends of the arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12 can be fitted together. A first flange 15 is provided at the connection of the arc-shaped clamping portions 13 of the first caliper portion 11 and the second caliper portion 12. A first through hole 150 is provided on the first flange 15 for threading the guide rod 3 through, forming a hinge point.

[0060] The front ends of the arc-shaped clamping parts 13 of the first caliper part 11 and the second caliper part 12 are provided with staggered protrusions (similar to the interlocking V-shaped structure), and the front ends of the two parts fit together perfectly.

[0061] The first caliper portion 11 and the second caliper portion 12 have a pair of first fixing lugs 16 on their gripping portions 14. A pin hole 160 is formed on each of the first fixing lugs 16, and a pin 161 is used to connect the two first fixing lugs 16 together, forming a second hinge point. The two first fixing lugs 16 can adopt an interlocking fit structure (similar to a V-shaped structure); or they can adopt a concave-convex fit structure, as shown in the attached figure.

[0062] A pair of second fixing lugs 17 are also provided on the gripping portions 14 of the first caliper portion 11 and the second caliper portion 12. At least one of the second fixing lugs 17 has a threaded hole 170, which engages with the external thread on the transmission rod 4 to form a screw-nut pair structure. The second fixing lugs 17 extending to achieve the transmission function are provided with trapezoidal internal threads, and the transmission rod 4 is provided with trapezoidal external threads that match the second fixing lugs 17. The trapezoidal thread tooth angle is set to 30°, resulting in good manufacturability, high root strength, and excellent centering. The two second fixing lugs 17 can adopt an interlocking fit structure design (similar to a cross-shaped structure); or they can adopt a concave-convex fit structure design, as shown in the attached figure.

[0063] The gripping parts 14 of the first caliper part 11 and the second caliper part 12 are provided with a pair of first fixing lugs 16 to achieve the fixing function. These lugs can be fixed by a pin 161, so that the radial force borne by the caliper is distributed on the pin 161, thereby reducing the radial force borne by the transmission part.

[0064] The positioning clamping assembly 2 includes a first clamping part 21 and a second clamping part 22. The first clamping part 21 and the second clamping part 22 are clamp-type structures and are connected together by a bolt assembly. The bolt assembly includes a bolt 23 and a nut. In this embodiment, the nut is a wing nut 24 for easy use.

[0065] A second flange 25 is provided on the first clamping part 21, and a second through hole 250 is provided on the second flange 25 for threading the guide rod 3; on the basis of ensuring that the positioning clamping assembly 2 and the caliper assembly 1 are coaxially and parallel, the first flange 15 and the second flange 25 should also be coaxially arranged to facilitate threading the guide rod 3.

[0066] An extension rod 26 is provided on the second clamping part 22, and a stepped hole 260 is provided on the extension rod 26. A bearing 27 is installed in the stepped hole 260 with an interference fit, and the transmission rod 4 passes through the bearing 27. In this embodiment, the bearing 27 is a deep groove ball bearing 27. After installing the deep groove ball bearing 27, a dust cover 28 also needs to be installed to reduce axial movement.

[0067] Example 3

[0068] The transmission rod 4 includes a straight section and a bent section 40. The straight section has an external thread of a certain length and passes through the caliper assembly 1 and the positioning clamping assembly 2. The purpose of the bent section 40 is to extend the lever arm, making it easier to crank the transmission rod 4. A handle 41 is also provided on the input end of the transmission rod 4 for easy gripping.

[0069] Example 4

[0070] This application provides a method for using a universal tool for disassembling and assembling flexible joint clamps in confined spaces, which includes the following steps:

[0071] Select an embedded retaining ring 10 of appropriate size and fit it onto the flexible joint type clamp;

[0072] The first clamping part 21 and the second clamping part 22 are snapped onto the clamped pipe 5 and connected together by a bolt assembly;

[0073] The first caliper part 11 and the second caliper part 12 are positioned opposite each other on the embedded retaining ring 10, and the pin 161 is inserted into the pin hole 160;

[0074] After adjusting the positioning clamping assembly 2 and the caliper assembly 1 to be coaxial, the caliper assembly 1 and the positioning clamping assembly 2 are connected together in series using the transmission rod 4 and the guide rod 3 respectively;

[0075] The operator holds the caliper with one hand and the handle 41 of the transmission rod 4 with the other hand. By rotating the transmission rod 4, the caliper assembly 1 is moved along the guide rod 3 to perform disassembly and assembly work.

[0076] After disassembling / installing the flexible joint clamp, loosen the caliper and positioning clamping assembly 2.

[0077] Thus, the objective of this invention has been achieved.

[0078] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A universal tool for disassembling and assembling flexible joint clamps in confined spaces, characterized in that, include: A caliper assembly having a split-type caliper and an embedded retaining ring for use with the caliper; A positioning and clamping assembly is coaxially arranged with the caliper assembly; A guide rod that connects the caliper assembly and the positioning clamping assembly together; A drive rod connects the caliper assembly and the positioning clamping assembly together, and the caliper assembly can move along the guide rod under the drive of the drive rod.

2. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 1, characterized in that, The embedded retaining ring is a replaceable component, designed and manufactured according to different sizes of flexible joint clamps.

3. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 2, characterized in that, The caliper includes a first caliper portion and a second caliper portion. Both the first caliper portion and the second caliper portion have an arc-shaped clamping portion and a gripping portion. Each of the first caliper portion and the second caliper portion has a hinge point on the arc-shaped clamping portion and the gripping portion.

4. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 3, characterized in that, The arc-shaped clamping portions of the first caliper and the second caliper are arranged opposite to each other, and the front ends of the arc-shaped clamping portions of the first caliper and the second caliper can be fitted together. A first flange is provided at the connection of the arc-shaped clamping portions of the first caliper and the second caliper, and a first through hole is provided on the first flange for threading the guide rod to form a hinge point.

5. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 4, characterized in that, The front end of the arc-shaped clamping part of the first caliper is designed as a concave shape, and the front end of the arc-shaped clamping part of the second caliper is designed as a convex shape; or the front ends of the arc-shaped clamping parts of the first caliper and the second caliper are staggered with protrusions, so that they can be joined together.

6. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 5, characterized in that, The first caliper and the second caliper have a pair of first fixing lugs on their gripping parts. The first fixing lugs have pin holes and the two first fixing lugs are connected together by a pin to form a second hinge point.

7. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to any one of claims 1-6, characterized in that, A pair of second fixing lugs are also provided on the gripping parts of the first caliper and the second caliper. The second fixing lugs have threaded holes that cooperate with the external threads on the transmission rod to form a lead screw and nut pair structure.

8. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 7, characterized in that, The positioning and clamping assembly includes a first clamping part and a second clamping part. The first clamping part and the second clamping part are clamp-type structures and are connected together by a bolt assembly.

9. The universal disassembly and assembly tool for flexible joint clamps in confined spaces according to claim 8, characterized in that, A second flange is provided on the first clamping part, and a second through hole is provided on the second flange for threading the guide rod; An extension rod is provided on the second clamping part, and a stepped hole is provided on the extension rod. A bearing is installed in the stepped hole with an interference fit, and the transmission rod passes through the bearing.

10. A method for using a universal disassembly and assembly tool for flexible joint clamps in confined spaces, characterized in that... Includes the following steps: Select an embedded retaining ring of appropriate size and fit it onto the flexible joint type clamp; The first clamping part and the second clamping part are snapped onto the clamped pipe and connected together by a bolt assembly; The first caliper and the second caliper are positioned opposite each other on the embedded retaining ring, and the pin is inserted into the pin hole; The caliper assembly and the positioning clamping assembly are connected together using a transmission rod and a guide rod, respectively. The operator holds the caliper with one hand and the handle of the transmission rod with the other. By rotating the transmission rod, the caliper assembly is moved along the guide rod, thereby performing the disassembly and assembly work.

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