assembly fixture

Abstract

The present application relates to the technical field of aero-engine, and discloses an assembling clamp, which comprises a clamp and an adjusting assembly. The clamp is provided with two clamps, which are respectively sleeved on two pipe fittings to be adjusted. The adjusting assembly comprises an adjusting boss and an adjusting screw. The adjusting boss is provided with two adjusting bosses, which are respectively arranged on the side of the clamp. The two adjusting bosses are oppositely arranged, and the two adjusting bosses have an overlapping part in the axial direction of the pipe fitting to be adjusted. The surface of the overlapping part of the two adjusting bosses respectively forms a first limiting surface and a second limiting surface. The first limiting surface and / or the second limiting surface is provided with an adjusting hole. The adjusting screw is arranged in the adjusting hole. The end of the adjusting screw is adapted to abut against the first limiting surface or the second limiting surface. The present application can control the distance between the adjusting screw and the first limiting surface or the second limiting surface by controlling the number of rotations of the adjusting screw, so as to adjust the distance between the first limiting surface and the second limiting surface, and adjust the angular position of the two pipe fittings to be adjusted.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and more specifically to assembly fixtures. Background Technology

[0002] During the design process of aero engines, the cross-sectional dimensions are very sensitive in order to reduce the space occupied on the aircraft, so the cross-sectional diameter is minimized as much as possible. When faced with the problem of fixing two casings together, some engines use axially segmented casings without radial flanges to reduce the cross-sectional diameter, and the casings are connected by radial bolts. At the same time, in order to ensure coaxiality and sealing between the casings, interference fits are used in axially segmented casings without radial flanges. During installation, due to machining errors of the casings, casing deformation, or tooling fixture deformation, the bolt holes of the two casings often cannot be accurately aligned, with an angular misalignment between 2° and 3°. Although the error is small, it will cause the bolts to be unable to be installed correctly.

[0003] Existing assembly methods require repeated disassembly of parts to ensure coaxiality and sealing between casings, until the angular positions of the casings are aligned. This is not only inefficient but also prone to damaging parts. Summary of the Invention

[0004] In view of this, the present invention provides an assembly fixture to solve the problems of low efficiency and easy damage to parts caused by repeated disassembly and assembly.

[0005] This invention provides an assembly fixture, including clamps and an adjustment assembly. Two clamps are provided, each adapted to be fitted onto two pipe fittings to be adjusted. The adjustment assembly includes an adjustment boss and an adjustment screw. Two adjustment bosses are provided, each located on the side of a clamp and facing each other. Along the axial direction of the pipe fittings to be adjusted, the two adjustment bosses have an overlapping portion. The surfaces of the overlapping portions of the two adjustment bosses respectively form a first limiting surface and a second limiting surface. An adjustment hole is formed on the first limiting surface and / or the second limiting surface. The adjustment screw passes through the adjustment hole, and its end is adapted to abut against the first limiting surface or the second limiting surface.

[0006] Beneficial effects: By controlling the number of turns of the adjusting screw, the distance by which the adjusting screw protrudes from the first or second limiting surface can be controlled, thereby adjusting the distance between the first and second limiting surfaces and adjusting the angular position of the two pipe fittings to be adjusted; this assembly fixture has a simple structure, is easy and reliable to install, and has a wide range of applications.

[0007] In one optional embodiment, the adjustment components are provided in several groups, and the several groups of adjustment components are evenly spaced along the circumference of the clamp.

[0008] Beneficial effects: Several sets of adjustment components are evenly spaced along the circumference of the clamp. The angular position of the pipe to be adjusted is adjusted simultaneously by multiple sets of adjustment components, avoiding excessive stress concentration inside the pipe to be adjusted.

[0009] In one optional embodiment, the clamp has a locking hole along its radial direction, and the assembly fixture further includes a locking screw that passes through the locking hole and is adapted to abut against the pipe to be adjusted.

[0010] Beneficial effect: By using locking screws, sufficient friction is applied to the fitting to be adjusted, preventing the fitting from slipping against the clamp during angular rotation, which could damage the fitting.

[0011] In one optional embodiment, the clamp includes an annular component and a fastener. Each end of the annular component has a first mounting hole. Two annular components are provided, and the first mounting holes on the two annular components are correspondingly connected. The fastener passes through the two corresponding first mounting holes on the two annular components to connect the two annular components. Alternatively, the clamp includes an annular component, a hinge, and a fastener. Two annular components are provided. The hinges respectively connect to the first ends of the two annular components. The second end of each annular component has a first mounting hole. The first mounting holes on the two annular components are correspondingly connected. The fastener passes through the two corresponding first mounting holes on the two annular components to connect the second ends of the two annular components.

[0012] Beneficial effects: The two ring-shaped parts are detachably connected to form a clamp, which facilitates the adjustment of the clamp's installation position and improves the clamp's applicability.

[0013] In one optional embodiment, the annular component includes an annular portion, a flange portion, and a connecting portion. The flange portion is disposed on the annular portion, and two connecting portions are disposed at the two ends of the annular portion respectively. The first mounting hole is disposed corresponding to the connecting portion, and the adjusting boss is connected to the flange portion.

[0014] In one alternative embodiment, the inner diameter of the annular member is 220 mm to 320 mm; and / or, the thickness of the annular member is 3 mm to 10 mm; and / or, the width of the annular member is 10 mm to 20 mm.

[0015] Beneficial effects: By limiting the size of the ring-shaped component, the overall portability of the assembly fixture is improved while ensuring the structural strength of the ring-shaped component, making on-site construction operations easier.

[0016] In one optional embodiment, the adjusting boss includes a base plate and a stop plate, the stop plate is disposed on the base plate, the base plate is connected to the clamp, the adjusting hole is formed on the stop plate, and the stop plate has a first limiting surface or a second limiting surface.

[0017] In one alternative embodiment, the adjusting boss further includes a rib plate that connects the base plate and the stop plate.

[0018] Beneficial effects: By setting ribs, the overall structural strength of the adjusting boss is improved, preventing breakage during angular position adjustment.

[0019] In one optional embodiment, the size of the adjusting boss in the X-axis direction is 25mm to 50mm; and / or, the size of the adjusting boss in the Y-axis direction is 35mm to 50mm; and / or, the size of the adjusting boss in the Z-axis direction is 25mm to 100mm.

[0020] Beneficial effects: By limiting the size of the adjusting boss, the structural strength of the adjusting boss is guaranteed, while facilitating on-site construction operations of the assembly fixture.

[0021] In one alternative embodiment, the assembly fixture further includes a protective pad, one side of which abuts against the clamp, and the other side of which is adapted to abut against the fitting to be adjusted.

[0022] Beneficial effects: By setting a protective pad between the clamp and the pipe to be adjusted, the clamp is prevented from scratching the pipe to be adjusted, and the friction force applied by the clamp to the pipe to be adjusted is increased. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the assembly fixture according to an embodiment of the present invention;

[0025] Figure 2 This is a side view of the assembly fixture according to an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0027] Figure 4for Figure 3 A magnified view of part B in the diagram;

[0028] Figure 5 This is a schematic diagram of the structure of the ring-shaped component according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the adjustment boss according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Clamp; 11. Locking hole; 12. Ring-shaped part; 121. First mounting hole; 122. Ring-shaped part; 123. Flange part; 124. Connecting part; 13. Fastener; 20. Adjusting assembly; 21. Adjusting boss; 211. Adjusting hole; 212. Base plate; 213. Stop plate; 214. Rib plate; 22. Adjusting screw; 30. Locking screw; 40. Fitting to be adjusted. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0034] According to an embodiment of the present invention, an assembly fixture is provided, including clamps 10 and adjusting components 20. Two clamps 10 are provided, each adapted to be fitted onto two pipe fittings 40 to be adjusted. The adjusting component 20 includes adjusting bosses 21 and adjusting screws 22. Two adjusting bosses 21 are provided, each disposed on the side of a clamp 10 and positioned opposite to the other. Along the axial direction of the pipe fitting 40 to be adjusted, the two adjusting bosses 21 have overlapping portions. The surfaces of the overlapping portions of the two adjusting bosses 21 respectively form a first limiting surface and a second limiting surface. An adjusting hole 211 is provided on the first limiting surface and / or the second limiting surface. The adjusting screw 22 passes through the adjusting hole 211, and the end of the adjusting screw 22 is adapted to abut against the first limiting surface or the second limiting surface.

[0035] By controlling the number of turns of the adjusting screw 22, the distance by which the adjusting screw 22 protrudes from the first or second limiting surface can be controlled, thereby adjusting the distance between the first and second limiting surfaces and adjusting the angular position of the two pipe fittings 40 to be adjusted. This assembly fixture has a simple structure, is easy and reliable to install, and has a wide range of applications.

[0036] Specifically, in this embodiment, the pipe fitting 40 to be adjusted is a casing.

[0037] Of course, in other alternative embodiments, the pipe fitting 40 to be adjusted can also be other tubular structures, such as ring control pipes.

[0038] For details, please refer to Figure 1 In this embodiment, the side of the clamp 10 can be the radial side of the clamp 10.

[0039] It should be noted that in other alternative embodiments, the side of the clamp 10 can also be the axial side of the clamp 10.

[0040] It should be noted that by swapping the two corresponding adjustment bosses 21 by 180°, the two pipe fittings 40 to be adjusted can rotate relative to each other clockwise or counterclockwise.

[0041] For details, please refer to Figure 3 An adjustment hole 211 is provided only in one of the adjustment bosses 21 of a set of adjustment components 20.

[0042] In one embodiment, the adjustment components 20 are provided in several groups, and the several groups of adjustment components 20 are evenly spaced along the circumference of the clamp 10.

[0043] For details, please refer to Figure 3 In this embodiment, two sets of adjustment components 20 are provided, and the two sets of adjustment components 20 are symmetrically arranged along the circumference of the clamp 10.

[0044] Of course, in other alternative embodiments, the number of adjustment components 20 can be adjusted according to the actual situation.

[0045] It should be noted that when using the adjustment assembly 20 to adjust the angular position of the pipe fitting 40, stress is generated inside the pipe fitting 40 under the influence of the adjustment assembly 20. If multiple sets of adjustment assemblies 20 are arranged at unequal intervals along the circumference of the clamp 10, the stress is easily concentrated at a point, resulting in a decrease in the structural strength of the pipe fitting 40 and making it prone to cracking and damage. Therefore, when multiple sets of adjustment assemblies 20 are provided, it is preferable to arrange the multiple sets of adjustment assemblies 20 at even intervals along the circumference of the clamp 10 so that the stress in the pipe fitting 40 can cancel each other out.

[0046] It is worth noting that several sets of adjustment components 20 are evenly spaced along the circumference of the clamp 10. By using multiple adjustment components 20 to simultaneously adjust the angular position of the pipe fitting 40 to be adjusted, excessive stress concentration inside the pipe fitting 40 to be adjusted is avoided.

[0047] In one embodiment, see Figure 5 Along the radial direction of the clamp 10, a locking hole 11 is provided on the clamp 10. The assembly fixture also includes a locking screw 30, which passes through the locking hole 11 and is adapted to abut against the pipe fitting 40 to be adjusted.

[0048] It should be noted that you should refer to [link / reference]. Figure 4 When the cross-section of the casing has a local anisotropic structure, the assembly fixture of this embodiment can also be used normally by appropriately adjusting the angular position of the clamp 10 and the number of locking screws 30.

[0049] It is worth noting that by using the locking screw 30, sufficient friction is applied to the pipe fitting 40 to be adjusted, preventing the pipe fitting 40 to be adjusted from slipping against the clamp 10 during angular rotation, which could cause damage to the pipe fitting 40.

[0050] In one embodiment, the clamp 10 includes an annular member 12 and a fastener 13. Both ends of the annular member 12 are provided with first mounting holes 121. There are two annular members 12, and the first mounting holes 121 on the two annular members 12 are connected to each other. The fastener 13 passes through the two first mounting holes 121 provided on the two annular members 12 to connect the two annular members 12.

[0051] It is worth noting that the two annular parts 12 are detachably connected to form a clamp 10, which facilitates the adjustment of the installation position of the clamp 10 and improves the applicability of the clamp 10.

[0052] In other alternative embodiments, the clamp 10 may also include annular members 12, hinges, and fasteners 13. Two annular members 12 are provided, and the hinges are respectively connected to the first ends of the two annular members 12. The second ends of the annular members 12 are provided with first mounting holes 121. The first mounting holes 121 on the two annular members 12 are connected to each other. The fasteners 13 pass through the two first mounting holes 121 provided on the two annular members 12 to connect the second ends of the two annular members 12.

[0053] In one embodiment, the annular member 12 includes an annular portion 122, a flange portion 123, and a connecting portion 124. The flange portion 123 is disposed on the annular portion 122, and two connecting portions 124 are disposed at the two ends of the annular portion 122 respectively. The first mounting hole 121 is disposed corresponding to the connecting portion 124, and the adjusting boss 21 is connected to the flange portion 123.

[0054] In one embodiment, the adjusting boss 21 includes a base plate 212 and a stop plate 213. The stop plate 213 is disposed on the base plate 212, the base plate 212 is connected to the clamp 10, the adjusting hole 211 is opened on the stop plate 213, and the stop plate 213 is formed with a first limiting surface or a second limiting surface.

[0055] For details, please refer to Figure 5 and Figure 6 A through hole is provided on the base plate 212, and a corresponding through hole is provided on the flange part 123. The base plate 212 and the flange part 123 are connected by screws passing through the through holes.

[0056] In one embodiment, the adjusting boss 21 further includes a rib 214, which connects the base plate 212 and the stop plate 213.

[0057] For details, please refer to Figure 6 In this embodiment, two ribs 214 are provided, which are symmetrically arranged on both sides of the adjustment hole 211.

[0058] Of course, in other alternative embodiments, the number of ribs 214 can be selected according to the actual situation.

[0059] It is worth noting that by setting the rib plate 214, the overall structural strength of the adjusting boss 21 is improved, preventing the adjusting boss 21 from breaking during the angular position adjustment process.

[0060] In one embodiment, the inner diameter of the annular member 12 is 220 mm to 320 mm; and / or, the thickness of the annular member 12 is 3 mm to 10 mm; and / or, the width of the annular member 12 is 10 mm to 20 mm.

[0061] In one embodiment, see Figure 6 Adjust the size of boss 21 in the X-axis direction from 25mm to 50mm, adjust the size of boss 21 in the Y-axis direction from 35mm to 50mm, and adjust the size of boss 21 in the Z-axis direction from 25mm to 100mm.

[0062] It should be noted that the adjusting hole 211 is not centered in the Z-axis direction of the adjusting boss 21, and the distance between the center of the adjusting hole 211 and the center of the stop plate 213 is greater than the major diameter of the adjusting hole 211.

[0063] It should be noted that during the assembly of the engine casing, due to the influence of the assembly space, the dimensions of the adjusting boss 21 and the annular part 12 should not be too large, so as to prevent the assembly fixture from interfering with or colliding with other parts of the engine when using the assembly fixture of this embodiment.

[0064] It is worth noting that by limiting the dimensions of the annular part 12 and the adjusting boss 21, the structural strength of the adjusting boss 21 is ensured while facilitating on-site construction operations of the assembly fixture.

[0065] In one embodiment, the assembly fixture further includes a protective pad, one side of which abuts against the clamp 10, and the other side of which is adapted to abut against the fitting 40 to be adjusted.

[0066] It is worth noting that by setting a protective pad between the clamp 10 and the pipe fitting 40 to be adjusted, the clamp 10 can be prevented from scratching the pipe fitting 40 to be adjusted, and the friction force applied by the clamp 10 to the pipe fitting 40 to be adjusted can be increased.

[0067] Using the assembly fixture of this embodiment, firstly, the ring 12 is connected by fasteners 13 to form a clamp 10, and the clamp 10 is fitted onto the pipe 40 to be adjusted; then, the locking screw 30 is inserted into the locking hole 11 and abuts against the pipe 40 to be adjusted; next, the adjusting screw 22 is inserted into the adjusting hole 211 on one adjusting boss 21, and the end of the adjusting screw 22 abuts against the stop plate 213 of the other adjusting boss 21; finally, the adjusting screw 22 is rotated to adjust the angular position of the pipe 40 to be adjusted.

[0068] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An assembly fixture, characterized in that, include: Two clamps (10) are provided, and the two clamps (10) are adapted to be respectively fitted onto the two pipe fittings (40) to be adjusted; The adjustment assembly (20) includes an adjustment boss (21) and an adjustment screw (22). There are two adjustment bosses (21), which are respectively located on the side of the clamp (10) and are arranged opposite to each other. Along the axial direction of the pipe fitting (40) to be adjusted, the two adjustment bosses (21) have overlapping portions. The surfaces of the overlapping portions of the two adjustment bosses (21) respectively form a first limiting surface and a second limiting surface. The first limiting surface and / or the second limiting surface are provided with adjustment holes (211). The adjustment screw (22) passes through the adjustment hole (211), and the end of the adjustment screw (22) is adapted to abut against the first limiting surface or the second limiting surface. The adjustment components (20) are provided in two sets, and the two sets of adjustment components (20) are evenly spaced along the circumference of the clamp (10); Along the radial direction of the clamp (10), a locking hole (11) is provided on the clamp (10). The assembly fixture also includes a locking screw (30), which passes through the locking hole (11) and is adapted to abut against the pipe fitting (40) to be adjusted.

2. The assembly fixture according to claim 1, characterized in that, The clamp (10) includes an annular component (12) and a fastener (13). Both ends of the annular component (12) have first mounting holes (121). There are two annular components (12), and the first mounting holes (121) on the two annular components (12) are connected. The fastener (13) passes through the two corresponding first mounting holes (121) of the two annular components (12) to connect the two annular components (12); or... The clamp (10) includes an annular component (12), a hinge, and a fastener (13). There are two annular components (12). The hinges are respectively connected to the first ends of the two annular components (12). The second end of the annular component (12) is provided with a first mounting hole (121). The first mounting holes (121) on the two annular components (12) are connected to each other. The fastener (13) passes through the two first mounting holes (121) provided on the two annular components (12) to connect the second ends of the two annular components (12).

3. The assembly fixture according to claim 2, characterized in that, The annular component (12) includes an annular portion (122), a flange portion (123), and a connecting portion (124). The flange portion (123) is disposed on the annular portion (122). There are two connecting portions (124), which are respectively disposed at both ends of the annular portion (122). The first mounting hole (121) is disposed corresponding to the connecting portion (124). The adjusting boss (21) is connected to the flange portion (123).

4. The assembly fixture according to claim 2, characterized in that, The inner diameter of the annular component (12) is 220 mm to 320 mm; and / or, The thickness of the annular component (12) is 3 mm to 10 mm; and / or, The width of the annular component (12) is 10 mm to 20 mm.

5. The assembly fixture according to claim 1, characterized in that, The adjusting boss (21) includes a base plate (212) and a stop plate (213). The stop plate (213) is disposed on the base plate (212). The base plate (212) is connected to the clamp (10). The adjusting hole (211) is opened on the stop plate (213). The stop plate (213) has a first limiting surface or a second limiting surface.

6. The assembly fixture according to claim 5, characterized in that, The adjusting boss (21) also includes a rib (214) that connects the base plate (212) and the stop plate (213).

7. The assembly fixture according to claim 5, characterized in that, The adjusting boss (21) has a dimension of 25mm to 50mm in the X-axis direction; and / or, The adjusting boss (21) has a dimension of 35mm to 50mm in the Y-axis direction; and / or, The size of the adjustment boss (21) in the Z-axis direction is 25mm to 100mm.

8. The assembly fixture according to claim 1, characterized in that, The assembly fixture also includes a protective pad, one side of which abuts against the clamp (10), and the other side of which is adapted to abut against the pipe fitting (40) to be adjusted.

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