General test device and test method for corrugated pipe

Abstract

The application discloses a bellows universal test device and a test method, and relates to the field of aircraft engine tests, and aims to realize accurate installation and adjustment of the bellows. The bellows universal test device comprises a base and a positioning device. The base is provided with a plurality of first installation grooves and a plurality of second installation grooves which are staggered with each other. The positioning device comprises a support, a first installation frame, a second installation frame, a first fixing piece and a second fixing piece; the support is adjustably installed in at least one of the first installation grooves and the second installation grooves; the support comprises a first groove and a second groove; the first installation frame is installed in the first groove; the second installation frame is installed in the second groove; the first groove and the second groove are perpendicular to the first installation grooves and the second installation grooves; the first fixing piece is installed in the first installation frame, and the second fixing piece is installed in the second installation frame. The above technical scheme adopts secondary adjustment positioning, and the adjustment process is very accurate and convenient, and the bellows universal test device is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of aircraft engine testing, specifically to a universal testing device and method for bellows. Background Technology

[0002] Aero engines have a compact internal space, with numerous pipes outside the casing used to transport media such as fuel, lubricating oil, and air. Accumulated errors from machining of the casing and pipes, welding deformation of components, and assembly can make some pipes difficult or even impossible to assemble. This is especially true for large-diameter air pipes, which have high rigidity but low flexibility, resulting in limited error compensation and poor assemblability. To improve assemblability, composite corrugated pipes are used in engines to compensate for these errors.

[0003] The application of composite corrugated pipes greatly improves assemblability. However, composite corrugated pipes have poor material consistency, need to withstand medium pressure and vibration loads, and require compensation capabilities in the axial, circumferential, and angular dimensions. Therefore, before formal installation and use, it is necessary to verify their fatigue life and compensation performance through testing.

[0004] The inventors have discovered that existing technologies suffer from at least the following problems: In related technologies, when conducting composite corrugated pipe tests, after connecting the corrugated pipe to a rigid tooling tube, the rigid tooling tube is fixed in its natural state using a tooling bracket, and the position of the entire test system is determined by the state of the corrugated pipe. Because the corrugated pipe is flexible, the actual state of the corrugated pipe during the test differs from the theoretical design state, resulting in inaccurate positioning and an inability to fully verify its vibration performance and fatigue life. Furthermore, the fixing tooling is a specialized tooling for specific corrugated pipe structures and states, lacking axial, circumferential, and angular adjustment functions. Different tooling needs to be designed and manufactured for corrugated pipes with different structures. Therefore, existing corrugated pipe testing tooling suffers from inaccurate positioning, lack of position adjustment, and non-universal tooling. Summary of the Invention

[0005] This invention proposes a universal testing device and method for corrugated pipes, which enables precise installation of corrugated pipes and convenient adjustment of their installation position.

[0006] This invention provides a universal testing device for bellows, comprising:

[0007] The base has multiple first mounting slots and multiple second mounting slots; each first mounting slot intersects with each second mounting slot, and each second mounting slot intersects with each first mounting slot; and

[0008] A positioning device includes a support, a first mounting bracket, a second mounting bracket, a first fixing member, and a second fixing member; the support is adjustablely mounted in at least one of the first mounting slot and the second mounting slot; the support includes a first slot and a second slot; the first mounting bracket is mounted in the first slot and its mounting position is adjustable; the second mounting bracket is mounted in the second slot and its mounting position is adjustable; both the first slot and the second slot are perpendicular to the first mounting slot and the second mounting slot; the first fixing member is mounted in the first mounting bracket, and the second fixing member is mounted in the second mounting bracket.

[0009] In some embodiments, the surface of the first fastener facing the first mounting bracket is provided with a positioning groove to engage with a protrusion at the end of the rigid tube to be installed.

[0010] In some embodiments, the first mounting bracket and the second mounting bracket are arranged in pairs, with the first fastener located between the two first mounting brackets and the second fastener located between the two second mounting brackets.

[0011] In some embodiments, the tilt angle of the first mounting bracket relative to the first slot is adjustable.

[0012] In some embodiments, the tilt angle of the second mounting bracket relative to the second slot is adjustable.

[0013] In some embodiments, the position of the first fastener mounted on the first mounting bracket is adjustable.

[0014] In some embodiments, the first mounting bracket is provided with a set of first mounting holes, and the first fastener can be selectively mounted in at least one of the first mounting holes.

[0015] In some embodiments, the position of the second fastener mounted on the second mounting bracket is adjustable.

[0016] In some embodiments, the second mounting bracket is provided with a set of second mounting holes, and the second fastener can be selectively mounted in at least one of the second mounting holes.

[0017] In some embodiments, the number of positioning devices is multiple, and the number of positioning devices is the same as the number of ports of the bellows to be tested.

[0018] In some embodiments, the number of positioning devices is multiple, and each positioning device is installed at intervals on the base.

[0019] In some embodiments, the first mounting bracket has a positioning hole, and the first fixing member has a positioning part, which is located in the positioning hole.

[0020] This invention also provides a bellows testing method, comprising the following steps:

[0021] Adjust the posture of the universal corrugated pipe testing device provided by any technical solution of the present invention according to the set installation height and tilt angle of the rigid pipe.

[0022] The rigid tube is fixed using the first fixing member and the second fixing member;

[0023] Remove the first fastener and the first mounting bracket;

[0024] The corrugated pipe to be tested is fixedly connected to the rigid pipe;

[0025] The bellows was tested.

[0026] In some embodiments, the general testing apparatus for corrugated pipes includes a plurality of positioning devices, each of which is independently mounted with one of the rigid pipes.

[0027] In some embodiments, the general testing apparatus for corrugated pipes includes multiple positioning devices, each of which cooperates with each other to install three rigid pipes, and a Y-shaped corrugated pipe is installed through the three rigid pipes.

[0028] The universal corrugated pipe testing device provided by the above technical solution has a base and a positioning device. The base itself can be placed at any location on the test site without any auxiliary drive mechanism, making the overall structure of the universal corrugated pipe testing device more compact, lightweight, and easy to move. The positioning device can be fixed in multiple positions on the base, which improves the installation flexibility of the positioning device; moreover, the positioning device does not use any complex drive mechanism or slide rail mechanism, making the positioning device itself lightweight and flexible. While meeting the requirements for flexible installation and positioning, it can subsequently meet the installation requirements of corrugated pipes with different installation requirements. The use of a first fixing member and a second fixing member to jointly position the rigid pipe provides a foundation for the subsequent precise positioning and installation of the corrugated pipe. This method utilizes the precise positioning of the rigid pipe to achieve the precise positioning of the corrugated pipe. Furthermore, the positions of the first fixing member relative to the first mounting bracket, the second fixing member relative to the second mounting bracket, and the positions of the first and second mounting brackets relative to the support are all adjustable. All the aforementioned position adjustments are achieved mechanically, requiring no drive structure, nor electrical or hydraulic control. The entire bellows universal testing device has a compact structure, and the adjustment process is highly precise and convenient, especially with the use of secondary adjustment positioning. Secondary adjustment positioning refers to first adjusting the posture of the bellows universal testing device to precisely position the rigid tube, and then using the rigid tube to achieve precise positioning of the bellows. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a three-dimensional structural diagram of the universal testing device for bellows provided in an embodiment of the present invention.

[0031] Figure 2 This is a partial three-dimensional structural diagram of the general testing device for bellows provided in an embodiment of the present invention.

[0032] Figure 3 A three-dimensional structural diagram of the first and second fixing components of the general-purpose corrugated pipe testing device provided in an embodiment of the present invention.

[0033] Figure 4 This is a three-dimensional structural diagram of multiple first fixing members and multiple second fixing members of the general corrugated pipe testing device provided in the embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the mating structure between the first fixing member and the rigid pipe of the general corrugated pipe testing device provided in an embodiment of the present invention.

[0035] Figure 6 A three-dimensional structural diagram of the first mounting bracket and the second mounting bracket of the general-purpose corrugated pipe testing device provided in the embodiments of the present invention.

[0036] Figure 7 This is a schematic diagram of the assembly of the first mounting bracket, the first fixing member, and the rigid pipe of the general corrugated pipe testing device provided in the embodiments of the present invention.

[0037] Figure 8 This is a schematic diagram illustrating the process of preparing multiple positioning devices for installing a Y-shaped corrugated pipe in the general corrugated pipe testing apparatus provided in this embodiment of the invention.

[0038] Figure 9 A schematic diagram showing the state of multiple positioning devices working together to install a Y-shaped corrugated pipe in the general testing apparatus for corrugated pipes provided in the embodiments of the present invention.

[0039] Figure 10 This is a schematic diagram of the corrugated pipe testing method provided in an embodiment of the present invention.

[0040] Figure label:

[0041] 1. Base; 2. Positioning device; 3. Rigid tube; 4. Corrugated tube;

[0042] 11. First mounting slot; 12. Second mounting slot; 13. Fixing hole;

[0043] 21. Support; 22. First mounting bracket; 23. Second mounting bracket; 24. First fastener; 25. Second fastener;

[0044] 211. First slot; 212. Second slot;

[0045] 221. First mounting hole; 222. Positioning hole; 231. Second mounting hole;

[0046] 241. Positioning groove; 242. Positioning part;

[0047] 31. Protrusion. Detailed Implementation

[0048] The following is combined Figures 1-10 The technical solution provided by this invention will be described in more detail below.

[0049] See Figure 1 and Figure 2 This invention provides a universal testing device for bellows, used for precise positioning of bellows 4 and precise adjustment of the installation position of bellows 4. The universal testing device includes a base 1 and a positioning device 2.

[0050] The base 1 is provided with multiple first mounting slots 11 and multiple second mounting slots 12; each first mounting slot 11 intersects with each second mounting slot 12, and each second mounting slot 12 intersects with each first mounting slot 11. Specifically, the base 1 is a rectangular plate, and multiple slots are provided along the directions parallel to the long and short sides of the plate: these are respectively denoted as first mounting slots 11 and second mounting slots 12. These slots divide the surface of the plate into multiple grids. The first mounting slots 11 and second mounting slots 12 are used to install positioning devices 2. The first mounting slot 11 extends to the long edge of the base 1, and the second mounting slot 12 extends to the short edge of the base 1. Each base 1 can install multiple positioning devices 2. Each positioning device 2 is installed independently and does not affect each other. Furthermore, the orientation of the corrugated pipe 4 fixed by each positioning device 2 does not affect each other and is also independent. Each positioning device 2 can be installed at the corner or edge of the base 1 without interfering with each other; it can be installed parallel to the long or short side of the base 1, or it can be installed at an angle.

[0051] See Figure 1 and Figure 2 The base 1 has a fixing hole 13 at the intersection of the first mounting groove 11 and the second mounting groove 12, and the fixing hole 13 penetrates the base 1. Specifically, the fixing hole 13 is, for example, a threaded hole. The support 21 has a corresponding threaded hole, allowing for easy fixing of the support 21 to the base 1. Figure 1 and Figure 2As shown, fixing holes 13 are provided at the intersection of the first mounting groove 11 and each of the second mounting grooves 12, and fixing holes 13 are also provided at the intersection of the second mounting groove 12 and each of the first mounting grooves 11.

[0052] See Figure 1 and Figure 2 The number of positioning devices 2 corresponding to a base 1 can be one or more. If there are multiple positioning devices 2, multiple positioning devices 2 can jointly correspond to a single irregularly shaped bellows 4. The irregularly shaped bellows 4 referred to here means that the bellows 4 has more than two ports, but not more than two. Specifically, the bellows 4 can be, for example, a Y-shaped bellows 4 with three ports, or an H-shaped bellows 4 with four ports.

[0053] See Figure 1 and Figure 2 In some embodiments, there are multiple positioning devices 2 corresponding to one base 1, and each positioning device 2 is used to individually position and install a corrugated pipe 4 to be tested.

[0054] See Figure 1 and Figure 2 In other embodiments, there are multiple positioning devices 2 corresponding to one base 1, and the number of positioning devices 2 is the same as the number of ports of the bellows 4 to be tested.

[0055] See Figure 1 and Figure 2 The positioning device 2 includes a support 21, a first mounting bracket 22, a second mounting bracket 23, a first fixing member 24, and a second fixing member 25.

[0056] The support 21 is adjustablely mounted in at least one of the first mounting slot 11 and the second mounting slot 12. The support 21 can be cast or integrally formed. In some embodiments, the support 21 has an elongated bottom 21a and a vertically arranged upright portion 21b. The bottom 21a is provided with a plurality of elongated holes, specifically, for example, two elongated holes. The two elongated holes are distributed at the edge of the bottom. Each elongated hole can be bolted to the first mounting slot 11 and the second mounting slot 12. By adjusting the position of the bolt in the elongated hole and the position of the elongated hole relative to the first mounting slot 11 and the second mounting slot 12, the position of the positioning device 2 on the base 1 can be determined.

[0057] See Figure 1 and Figure 2The support 21 includes a first groove 211 and a second groove 212. There are two uprights, spaced apart, one with the first groove 211 and the other with the second groove 212. Both the first groove 211 and the second groove 212 are, for example, elongated holes. A first mounting bracket 22 is mounted in the first groove 211, and its position is adjustable. A second mounting bracket 23 is mounted in the second groove 212, and its position is also adjustable. Both the first groove 211 and the second groove 212 are perpendicular to the first mounting groove 11 and the second mounting groove 12. Since the supports 21 are arranged in pairs, the first mounting brackets 22 and the second mounting brackets 23 are also arranged in pairs. A first fixing member 24 is located between the two first mounting brackets 22, and a second fixing member 25 is located between the two second mounting brackets 23. Each first mounting bracket 22 is fixed by two supports 21, making it more stable. Similarly, each second mounting bracket 23 is also fixed by two supports 21, making it more stable.

[0058] See Figure 2 In some embodiments, the tilt angle of the first mounting bracket 22 relative to the first groove 211 is adjustable. Since the first mounting bracket 22 is fixed in the first groove 211 of the support 21 and the two are fixed by bolts, the first mounting bracket 22 can be tilted arbitrarily within a set range without affecting the fixation of the first mounting bracket 22 and the support 21.

[0059] See Figure 2 Similarly, in some embodiments, the tilt angle of the second mounting bracket 23 relative to the second groove 212 is adjustable. Since the second mounting bracket 23 is fixed in the second groove 212 of the support 21, and the two are also fixed by bolts, the second mounting bracket 23 can be tilted arbitrarily within a set range without affecting the fixation of the second mounting bracket 23 and the support 21.

[0060] The tilt angles of the first mounting bracket 22 and the second mounting bracket 23 can be adjusted independently. They can be parallel or tilted, with the tilt directions being the same or opposite. The tilt angles of the first mounting bracket 22 and the second mounting bracket 23 determine the tilt angle of the rigid pipe 3, which in turn determines the tilt angle of the corrugated pipe 4 installed subsequently.

[0061] See Figure 1 and Figure 2 The first fastener 24 is mounted on the first mounting bracket 22, and the second fastener 25 is mounted on the second mounting bracket 23. Both the first fastener 24 and the second fastener 25 can be clamps. (See attached image.) Figure 3 and Figure 4As shown. The upper part of the clamp is curved, and the bottom is flat. The bottom edge of the clamp is connected to the first mounting bracket 22 and the second mounting bracket 23. The curved part of the clamp is used to cooperate with the rigid pipe 3 to achieve positioning and fixation of the rigid pipe 3. The first fixing member 24 is fixed to the first mounting bracket 22, and the second fixing member 25 is fixed to the second mounting bracket 23. The function of the first fixing member 24 and the second fixing member 25 is to fix the rigid pipe 3. After the rigid pipe 3 is accurately positioned and installed, the first fixing member 24 and the first mounting bracket 22 are removed, and then the corrugated pipe 4 is fixedly connected to the rigid pipe 3. Specifically, the corrugated pipe 4 is sleeved on the outside of the rigid pipe 3. This method achieves accurate positioning of the corrugated pipe 4 by accurately positioning the rigid pipe 3.

[0062] See Figure 3 , Figure 5 and Figure 7 The connection between the corrugated pipe 4 and the rigid pipe 3 is configured with a corrugated fit structure. Specifically, the end of the rigid pipe 3 corresponding to the first fixing member 24 has a protrusion 31, which engages with the concave area of ​​the corrugated pipe 4 to achieve a fixed insertion of the rigid pipe 3 and the corrugated pipe 4. In some embodiments, the surface of the first fixing member 24 facing the first mounting bracket 22 has a positioning groove 241 to engage with the protrusion 31 at the end of the rigid pipe 3 to be installed. The first fixing member 24 and the rigid pipe 3 form a convex-concave fit between the protrusion 31 and the positioning groove 241, thus allowing precise control of the installation position of the rigid pipe 3. After the installation position of the rigid pipe 3 is determined, the first fixing member 24 is removed. At this time, the protrusion 31 at the end of the rigid pipe 3 can engage with the corrugated pipe 4 to achieve precise positioning of the corrugated pipe 4.

[0063] The second fastener 25 corresponds to the flat area of ​​the rigid tube 3, so the inner wall of the second fastener 25 does not have grooves or other recessed structures.

[0064] Back Figure 1 and Figure 2 The width of the first fixing member 24 is smaller than the width of the first mounting bracket 22, and the width of the second fixing member 25 is smaller than the width of the second mounting bracket 23. Therefore, the distance between the first fixing member 24 and the second fixing member 25 is greater than the distance between the first mounting bracket 22 and the second mounting bracket 23. This arrangement allows the first fixing member 24 and the second fixing member 25 to fix two relatively far apart positions on the rigid pipe 3, resulting in multi-point fixation of the rigid pipe 3 and more precise positioning.

[0065] See Figure 1 , Figure 2 and Figure 6In some embodiments, the position of the first fastener 24 mounted on the first mounting bracket 22 is adjustable. That is, the position of the first fastener 24 is adjustable along the length direction of the first mounting bracket 22. In some embodiments, the first mounting bracket 22 is provided with a set of first mounting holes 221, and the first fastener 24 can be selectively mounted in at least one of the first mounting holes 221. The length direction of the first mounting bracket 22 refers to the length direction of the unbent strip of the first mounting bracket 22 located between the two supports 21, that is, the length extension direction of the plate provided with the positioning hole 222.

[0066] See Figure 1 , Figure 2 and Figure 6 In some embodiments, the position of the second fastener 25 mounted on the second mounting bracket 23 is adjustable. In some embodiments, the second mounting bracket 23 is provided with a set of second mounting holes 231, and the second fastener 25 can be selectively mounted in at least one of the second mounting holes 231.

[0067] See Figure 4 There are multiple first fasteners 24, and these first fasteners 24 are of different sizes, that is, different specifications. One of these first fasteners 24 is installed on the first mounting bracket 22 to fix the corrugated pipes 4 of different diameters.

[0068] See also Figure 4 There are multiple second fasteners 25, and these second fasteners 25 are of different sizes, i.e. different specifications. One of these second fasteners 25 is installed on the second mounting bracket 23 to fix rigid pipes 3 of different diameters.

[0069] The above technical solution, through the double clamp design of the first fixing member 24 and the second fixing member 25, the double support design of the first mounting bracket 22 and the second mounting bracket 23, and the rolling corrugation structure at the end of the rigid pipe 3, achieves accurate positioning of the rigid pipe 3 and the corrugated pipe 4, and facilitates the adjustment of the position and angle of the rigid pipe 3 and the corrugated pipe 4. Furthermore, through multiple sets of positioning devices 2 and a series of first fixing members 24 and second fixing members 25 of different specifications, the versatility of test specimens of composite corrugated pipes 4 with different pipe diameters and different structures is achieved. Using this universal corrugated pipe test device, the installation of the corrugated pipe 4 in the designed state can be realized, the axial, circumferential, and tilt angles of the corrugated pipe 4 can be adjusted, and the deformation of the corrugated pipe 4 in the axial, circumferential, and angular directions can be accurately defined, thereby verifying the compensation characteristics and vibration performance of the corrugated pipe 4.

[0070] See Figures 8 to 10 This invention also provides a bellows testing method, which can be implemented using the universal bellows testing device provided by any of the above technical solutions. The bellows testing method includes the following steps:

[0071] Step S100: Adjust the posture of the universal corrugated pipe test device provided by any technical solution of the present invention according to the set installation height and tilt angle of the rigid pipe 3.

[0072] In step S100 above, the origin coordinate O of the base 1 has a relative positional relationship with the assembly position coordinate of the general corrugated pipe testing device. Based on the test state of the corrugated pipe 3, the positions of each group of positioning devices and the angles of each mounting bracket are determined. Specifically, the corrugated pipe 4 can be a composite material corrugated pipe.

[0073] The positioning device 2 can be placed at any position on the base 1 to achieve X and Y axis position adjustment and Z-axis angle adjustment. The first mounting bracket 22 and the second mounting bracket 23 can move up and down along the first groove 211 and the second groove 212 of the positioning support 21, and rotate around the bolt 50 to achieve Z-axis height adjustment and Z-axis angle adjustment, thereby simulating different assembly states of the bellows 3 and verifying the compensation capability of the bellows 3 under axial, circumferential, and angular deformation. After the position and angle of the entire positioning device 2 are determined, the support 21 is fixed by bolts 51 and 52 and fastening nut 61. The first mounting bracket 22 and the second mounting bracket 23 are fixed by bolt 50, self-locking nut 62 and washer 71. The first fixing member 24 and the second fixing member 25 are fixed by bolt 53 and self-locking nut 63.

[0074] Step S200: Fix the rigid tube 3 using the first fixing member 24 and the second fixing member 25. Specifically, the center point A of the rolling wave (i.e., the protrusion 31) at the end of the rigid tube 3 is used as the positioning point, see [reference needed]. Figure 5 As shown, the rigid pipe 3 is fixed to the first fixing member 24 and the second fixing member 25 by a double clamp.

[0075] The rigid pipe 3 adopts a special structure, with a protrusion 31 in the assembly area with the corrugated pipe 3. The center point A of the protrusion 31 is used as the positioning reference. The first fixing member 24 is designed with a rolling corrugated structure, and the positioning groove 241 at its upper end matches the protrusion 31 of the rigid pipe 3 to achieve precise positioning. Positioning parts 242 are provided on both the left and right sides of the mounting surface of the first fixing member 24. The positioning parts 242 cooperate with the positioning holes 22 on the first mounting bracket 22 to further improve the positioning accuracy.

[0076] Step S300: Remove the first mounting bracket 22 and the first fastener 24.

[0077] After the first fastener 24 and the rigid pipe 3 are assembled, and before the corrugated pipe 3 is assembled, the rigid pipe 3 is assembled and fixed to the second mounting bracket 23 by the second fastener 25. Then the first mounting bracket 22 and the first fastener 24 are removed to facilitate the assembly of the corrugated pipe 3.

[0078] Step S400: Fix the corrugated pipe 4 to be tested to the rigid pipe 3.

[0079] Step S500: Test the bellows 4.

[0080] In some embodiments, the universal corrugated pipe testing apparatus includes multiple positioning devices 2, each positioning device 2 independently mounting a rigid pipe 3. Each rigid pipe 3 can be fitted with a corrugated pipe 4 to be tested.

[0081] See Figure 9 In some embodiments, the general testing apparatus for corrugated pipes includes multiple positioning devices 2, each positioning device 2 cooperating with each other to install three rigid pipes 3, through which a Y-shaped corrugated pipe 4 is installed.

[0082] Figure 9 The bellows universal test apparatus shown includes three positioning devices 2, whose positions are denoted as A, B, and C respectively.

[0083] Positioning device 2 and rigid pipe 3 are fixedly connected. Specifically, at point A, positioning device 2 is first connected to rigid pipe 3 using a first positioning element and a second positioning element; then the first positioning element is removed. Positioning devices 2 at points B and C also first use the first and second positioning elements to precisely position the rigid pipe 3, then the first positioning element is removed. Finally, the three ends of the Y-shaped corrugated pipe 4 are installed onto the three rigid pipes 3 at points A, B, and C. This achieves precise positioning of the three branches of the corrugated pipe 4.

[0084] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bellows general test device characterized by, include: The base (1) is provided with multiple first mounting slots (11) and multiple second mounting slots (12); each first mounting slot (11) intersects with each second mounting slot (12), and each second mounting slot (12) intersects with each first mounting slot (11); and The positioning device (2) includes a support (21), a first mounting bracket (22), a second mounting bracket (23), a first fixing member (24), and a second fixing member (25); the support (21) is adjustablely mounted in at least one of the first mounting slot (11) and the second mounting slot (12); the support (21) includes a first slot (211) and a second slot (212); the first mounting bracket (22) is mounted in the first slot (211), and its mounting position is adjustable; the second mounting bracket (23) is mounted in the second slot (212), and its mounting position is adjustable; the first slot (211) and the second slot (212) are both perpendicular to the first mounting slot (11) and the second mounting slot (12); the first fixing member (24) is mounted in the first mounting bracket (22), and the second fixing member (25) is mounted in the second mounting bracket (23).

2. A bellows general test device according to claim 1, characterized in that The first fixing member (24) has a positioning groove (241) on its surface facing the first mounting bracket (22) to cooperate with the protrusion (31) at the end of the rigid tube (3) to be installed.

3. The bellows general test device of claim 1, wherein, The first mounting bracket (22) and the second mounting bracket (23) are arranged in pairs. The first fastener (24) is located between the two first mounting brackets (22), and the second fastener (25) is located between the two second mounting brackets (23).

4. The bellows general test device of claim 1, wherein, The tilt angle of the first mounting bracket (22) relative to the first slot (211) is adjustable.

5. The universal testing device for bellows according to claim 1, characterized in that, The tilt angle of the second mounting bracket (23) relative to the second slot (212) is adjustable.

6. The universal testing apparatus for bellows according to claim 1, characterized in that, The position of the first fastener (24) installed on the first mounting bracket (22) is adjustable.

7. The universal testing apparatus for bellows according to claim 6, characterized in that, The first mounting bracket (22) is provided with a set of first mounting holes (221), and the first fastener (24) can be selectively mounted in at least one of the first mounting holes (221).

8. The universal testing apparatus for bellows according to claim 1, characterized in that, The position of the second fastener (25) installed on the second mounting bracket (23) is adjustable.

9. The universal testing apparatus for bellows according to claim 8, characterized in that, The second mounting bracket (23) is provided with a set of second mounting holes (231), and the second fastener (25) can be selectively mounted in at least one of the second mounting holes (231).

10. The universal testing apparatus for bellows according to claim 1, characterized in that, The number of positioning devices (2) is multiple, and the number of positioning devices (2) is the same as the number of ports of the bellows (4) to be tested.

11. The universal testing apparatus for bellows according to claim 10, characterized in that, Each of the positioning devices (2) is installed at intervals on the base (1).

12. The universal testing apparatus for bellows according to claim 1, characterized in that, The base (1) has a fixing hole (13) at the intersection of the first mounting groove (11) and the second mounting groove (12).

13. The universal testing apparatus for bellows according to claim 1, characterized in that, The first mounting bracket (22) has a positioning hole (222), and the first fixing member (24) has a positioning part (242), which is located in the positioning hole (222).

14. A method for testing bellows, characterized in that, The method is implemented using the universal testing apparatus for bellows as described in any one of claims 1 to 13, and includes the following steps: Adjust the posture of the general corrugated pipe test device according to the set installation height and tilt angle of the rigid pipe; The rigid tube is fixed using the first fixing member and the second fixing member; Remove the first fastener and the first mounting bracket; The corrugated pipe to be tested is fixedly connected to the rigid pipe; The bellows was tested.

15. The corrugated pipe testing method according to claim 14, characterized in that, When the general-purpose corrugated pipe testing device includes multiple positioning devices, each positioning device independently installs one rigid pipe; or, the positioning devices cooperate with each other to install three rigid pipes, and a Y-shaped corrugated pipe is installed through the three rigid pipes.

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