Loading device for testing influence of assembly stress on fatigue life of conduit

Abstract

The utility model discloses a loading device for testing the influence of assembly stress on the fatigue life of a conduit, which relates to the technical field of testing the influence of the fatigue life of the conduit and comprises a base, a slide block, a large slide carriage, a small slide carriage, a first bracket and a second bracket, vertical guide rails are arranged on the two sides of the base; the number of the sliding blocks is two, and the two sliding blocks are connected with the two vertical guide rails in a sliding mode correspondingly. The large slide carriage is fixed to the top face of the base, and a transverse guide rail located between the two vertical guide rails is arranged on the top face of the large slide carriage. The two small slide carriages are connected to the transverse guide rail in a sliding mode, and each small slide carriage is provided with a longitudinal sliding groove perpendicular to the transverse guide rail; the first support and the second support are in sliding connection with the longitudinal sliding grooves in the two small slide carriages respectively. A test connector is fixed on the second support, the first support and the two sliding blocks are used for installing a test guide pipe, and the end of the test guide pipe is connected with the test connector. According to the utility model, random setting of installation stress is realized, and test requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of catheter fatigue life influence test, specifically to the influence test of the assembly stress of aviation hydraulic pipeline on the fatigue life of catheter, more specifically to a loading device for the influence test of the assembly stress on the fatigue life of catheter. BACKGROUND

[0002] With the gradually increasing training intensity of our country's aircraft, the design of pipeline structure, fixing mode, installation standard can not meet the design and installation requirement of the current aircraft hydraulic pipeline system. A large number of pipeline leakage, grinding, rupture problem is high, and becomes the main fault of aircraft pipeline system. The excessive assembly stress of catheter is a main reason for the leakage and fracture of hydraulic catheter, and the inaccurate positioning of system accessories, support and unstable assembly are the main reasons for the stress assembly of catheter.

[0003] The installation stress of aircraft hydraulic catheter is composed of three position deviations Δ1, Δ2 and Δ3, as shown in the figure, wherein: Δ1 is the axial deviation in the installation process of catheter, Δ2 is the radial deviation in the installation process of catheter, and Δ3 is the axial deflection angle in the installation process of catheter. Figure 1

[0004] Therefore, it is important to design a loading device for the influence test of assembly stress on the fatigue life of catheter, study the fatigue life of pipeline connecting piece under different assembly stress, and improve the reliability and safety of pipeline system and ensure the operation safety of the whole aircraft. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a loading device for the influence test of assembly stress on the fatigue life of catheter, which aims at solving the above technical problems.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] A loading device for the influence test of assembly stress on the fatigue life of catheter, comprising:

[0008] The two sides of the base are provided with vertical guide rails;

[0009] The number of sliding blocks is two, and the two sliding blocks are respectively connected with the two vertical guide rails in sliding mode;

[0010] The top surface of the large sliding plate is provided with a horizontal guide rail between the two vertical guide rails;

[0011] ​Two small sliding plates are slidably connected to the transverse guide rail, and each of the small sliding plates has a longitudinal sliding groove perpendicular to the transverse guide rail;

[0012] A first support and a second support are slidably connected to the longitudinal sliding grooves of the two small sliding plates, the second support is fixed with a test joint, and the first support and the two sliding blocks are used for mounting a test conduit and connecting the end of the test conduit with the test joint.

[0013] Through the technical scheme, the installation stress Δ1, Δ2 and Δ3 can be arbitrarily set through the design of the large sliding plate, the small sliding plate and the sliding block, the test demand is met, the loading device is fixed on the vibration test bench through the base, and the test can be carried out, and the loading problem of the installation stress of the aircraft hydraulic conduit test research on the fatigue life test is solved.

[0014] Preferably, in the loading device for the test of the influence of assembly stress on the fatigue life of a conduit, the base is composed of a base base plate and the vertical guide rails fixed on both sides, and the base base plate is provided with a base mounting hole.

[0015] Preferably, in the loading device for the test of the influence of assembly stress on the fatigue life of a conduit, the vertical guide rail is provided with a vertical scale mark.

[0016] Preferably, in the loading device for the test of the influence of assembly stress on the fatigue life of a conduit, the large sliding plate is composed of a large sliding plate base plate and a transverse guide rail fixed on the top surface of the large sliding plate base plate, and the large sliding plate base plate is provided with a large sliding plate mounting hole for connecting with the base base plate.

[0017] Preferably, in the loading device for the test of the influence of assembly stress on the fatigue life of a conduit, the transverse guide rail is provided with a transverse scale mark.

[0018] Preferably, in the loading device for the test of the influence of assembly stress on the fatigue life of a conduit, the small sliding plate is composed of a small sliding plate base plate and a dovetail sliding groove formed on both sides of the small sliding plate base plate, and the dovetail sliding groove is slidably connected with the transverse guide rail.

[0019] Preferably, in the loading device for assembling stress influence test on fatigue life of pipe, the small slide base plate is provided with longitudinal scale marks.

[0020] Preferably, in the loading device for assembling stress influence test on fatigue life of pipe, the two sliding blocks and the first support are fixed with fixed pipe clamps for clamping the test pipe.

[0021] Preferably, in the loading device for assembling stress influence test on fatigue life of pipe, the sliding blocks, the small slide, the first support and the second support are fastened by jacking bolts.

[0022] Preferably, in the loading device for assembling stress influence test on fatigue life of pipe, the base, the small slide and the large slide are made of high-rigidity cast iron.

[0023] Compared with the prior art, the loading device for assembling stress influence test on fatigue life of pipe has the following advantages:

[0024] 1. Arbitrary setting of installation stress: the installation stress Δ1, Δ2 and Δ3 can be arbitrarily set by designing the large slide, the small slide and the sliding blocks, so as to meet different test requirements.

[0025] 2. Improved test efficiency: the loading device is fixed on a test bench such as a vibration test bench by the base, and the test can be carried out, so that the test preparation process is simplified.

[0026] 3. Precision determination: the vertical guide rail, the horizontal guide rail and the small slide are respectively provided with scale marks, so that the precision of the sliding blocks, the small slide and the support during adjustment can be determined.

[0027] 4. Quick tightness adjustment: the sliding blocks, the small slide, the first support and the second support are fastened by jacking bolts, so that the sliding components can be quickly adjusted and positioned.

[0028] 5. High-strength manufacturing requirement: the base, the large slide and the small slide are made of high-rigidity cast iron, so as to meet the high-strength manufacturing requirement.

[0029] 6. Strong universality: not limited to aviation hydraulic pipes, but applicable to all pipe installation stress fatigue life analysis tests. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below only illustrate a part of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] Figure 1 The drawing is a schematic diagram of the existing pipe installation stress composition;

[0032] Figure 2 The drawing is a structural schematic diagram of the loading device for the test of the influence of the assembly stress on the fatigue life of the pipe provided by the present application;

[0033] Figure 3 The drawing is a structural schematic diagram of the base provided by the present application;

[0034] Figure 4 The drawing is a structural schematic diagram of the connection of the large slide plate and the small slide plate provided by the present application;

[0035] Figure 5 The drawing is a structural schematic diagram of the connection of the first support, the second support and the sliding block provided by the present application.

[0036] Among them:

[0037] 1-base; 2-large slide plate; 3-small slide plate; 4-first support; 5-second support; 6-sliding block; 7-test pipe;

[0038] 101-vertical guide rail; 102-base mounting hole; 103-base base plate;

[0039] 201-large slide plate base plate; 202-large slide plate mounting hole; 203-horizontal guide rail; 204-horizontal scale mark;

[0040] 301-small slide plate base plate; 302-dovetail sliding groove; 303-longitudinal scale mark; 304-longitudinal sliding groove;

[0041] 601-fixed pipe clamp. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0043] Referring to the drawingsFigure 2 The utility model discloses an installation device for the test of the influence of stress on the fatigue life of a pipe, comprising:

[0044] The base 1 is provided with vertical guide rails 101 on both sides thereof;

[0045] The two sliding blocks 6 are respectively connected with the two vertical guide rails 101 in a sliding manner.

[0046] The large sliding plate 2 is fixed on the top surface of the base 1, and the top surface of the large sliding plate 2 is provided with horizontal guide rails 203 between the two vertical guide rails 101.

[0047] The two small sliding plates 3 are respectively connected with the horizontal guide rails 203 in a sliding manner, and each of the small sliding plates 3 is provided with longitudinal sliding grooves 304 perpendicular to the horizontal guide rails 203.

[0048] The first bracket 4 and the second bracket 5 are respectively connected with the longitudinal sliding grooves 304 on the two small sliding plates 3 in a sliding manner, and the second bracket 5 is fixed with a test joint.

[0049] Referring to the accompanying drawings, Figure 3 The base 1 is composed of a base base plate 103 and vertical guide rails 101 fixed on both sides thereof, and the base base plate 103 is provided with a base mounting hole 102.

[0050] In order to further optimize the above technical solution, the vertical guide rails 101 are provided with vertical scale marks.

[0051] Referring to the accompanying drawings, Figure 4 The large sliding plate 2 is composed of a large sliding plate base plate 201 and horizontal guide rails 203 fixed on the top surface of the large sliding plate base plate 201, and the large sliding plate base plate 201 is provided with a large sliding plate mounting hole 202 for connecting with the base base plate 103.

[0052] In order to further optimize the above technical solution, the horizontal guide rails 203 are provided with horizontal scale marks 204.

[0053] In order to further optimize the above technical solution, the small sliding plate 3 is composed of a small sliding plate base plate 301 and dovetail sliding grooves 302 formed on both sides of the small sliding plate base plate 301, and the dovetail sliding grooves 302 are connected with the horizontal guide rails 203 in a sliding manner.

[0054] In order to further optimize the above technical solution, the small sliding plate base plate 301 is provided with longitudinal scale marks 303.

[0055] Referring to the accompanying drawings, Figure 5Two fixed pipe clamps 601 for clamping the test conduit 7 are fixed on the two sliders 6 and the first support 4.

[0056] In order to further optimize the above technical solution, the slider 6, the small slide plate 3, the first support 4 and the second support 5 are fastened by jacking bolts, which are not shown in the figure.

[0057] In order to further optimize the above technical solution, the base 1, the large slide plate 2 and the base plate surface of the small slide plate 3 are all made of high-rigidity cast iron.

[0058] In the embodiment, the test method is as follows:

[0059] In order to solve the Δ1 preset problem, the small slide plate 3 is designed to set the axial gap by sliding on the large slide plate 2 through the dovetail sliding groove 302.

[0060] Further, in order to solve the Δ2 preset problem, two small slide plates 3 are designed to set the size of Δ2 by controlling the relative positions of the first support 4 and the second support 5 installed on the sliding groove 304 of the small slide plate 3.

[0061] Further, in order to solve the Δ3 preset problem, the slider 6 is designed to set the axial deflection angle by sliding up and down on the vertical guide rail 101 of the base 1.

[0062] In the embodiment, the test method is as follows:

[0063] First, the test conduit 7 is connected with the slider 6 and the first support 4 through the fixed pipe clamp 601, and the other end is installed with the test joint without stress matching, and the scale positions of the small slide plate 3 on the large slide plate 2, the first support 4 and the second support 5 on the small slide plate 3, and the slider 6 on the base 1 are calibrated.

[0064] Then, the value of Δ1 is set by adjusting the distance between the two small slide plates 3, the value of Δ2 is set by adjusting the relative positions of the first support 4 and the second support 5, and the value of Δ3 is set by adjusting the height of the slider 6 on the vertical guide rail 101 of the base 1.

[0065] Finally, the loading device is fixed on the test bench such as a vibration test bench through the base mounting hole 102 of the base 1, and the test can be carried out.

[0066] The utility model is not limited to the aviation hydraulic conduit, and all pipe stress fatigue life analysis test can be tested by the utility model device.

[0067] The various embodiments described in this specification are presented by way of example, and each embodiment is presented for the purpose of conveying the novelty and inventive aspects of the present patent application. For the embodiments disclosed, because they correspond to the methods disclosed in the embodiments, they are described more simply, and the relevant parts are referred to the method part description.

[0068] The above description of disclosed embodiments enables one of ordinary skill in the art to make and use the patent application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the patent application. Thus, the present patent application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A loading device for use in assembling a test of the effect of stress on the fatigue life of a pipe, characterized in that, Include: Base (1), both sides of the base (1) are provided with vertical guide rail (101); Slide block (6), the number of two slide blocks (6) is two, and two slide blocks (6) are respectively connected with two vertical guide rails (101) in sliding mode; Big slide plate (2), the top surface of the big slide plate (2) is fixed on the top surface of the base (1), and the top surface of the big slide plate (2) is provided with a transverse guide rail (203) located between two vertical guide rails (101); Small slide plate (3), the number of small slide plates (3) is two, and both are connected in sliding mode on the transverse guide rail (203), each small slide plate (3) has a longitudinal sliding groove (304) perpendicular to the transverse guide rail (203); First support (4), second support (5), the first support (4) and the second support (5) are respectively connected with the longitudinal sliding groove (304) on the two small slide plates (3) in sliding mode; The test joint is fixed on the second support (5), the first support (4) and two slide blocks (6) are used for installing test conduit (7), and the end of the test conduit (7) is connected with the test joint.

2. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 1, characterized in that, The base (1) is composed of a base base plate (103) and two vertical guide rails (101) fixed on both sides, and a base mounting hole (102) is formed in the base base plate (103).

3. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 2, characterized in that, The vertical guide rail (101) is provided with vertical scale mark.

4. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 2, characterized in that, The big slide plate (2) is composed of a big slide plate base plate (201) and a transverse guide rail (203) fixed on the top surface of the big slide plate base plate (201), and a big slide plate mounting hole (202) is formed in the big slide plate base plate (201) for connecting with the base base plate (103).

5. A loading device for use in an experiment to determine the effect of stress on the fatigue life of a pipe according to claim 4, wherein, The transverse guide rail (203) is provided with transverse scale mark (204).

6. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 1, characterized in that, The small slide plate (3) is composed of a small slide plate base plate (301) and a dovetail sliding groove (302) formed on both sides of the small slide plate base plate (301), and the dovetail sliding groove (302) is connected with the transverse guide rail (203) in sliding mode.

7. A loading device for use in an experiment to determine the effect of stress on the fatigue life of a pipe according to claim 6, characterized in that The small slide plate base plate (301) is provided with longitudinal scale mark (303).

8. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 1, characterized in that, Both the slide block (6) and the first support (4) are fixed with a fixed pipe clamp (601) for clamping the test conduit (7).

9. The loading device for use in an experiment to determine the effect of stress on the fatigue life of a pipe according to claim 1, characterized in that The slide block (6), the small slide plate (3), the first support (4) and the second support (5) are all fastened by jacking bolt.

10. The loading device for assembling a test of the effect of stress on the fatigue life of a pipe according to claim 1, characterized in that, The base (1), the big slide plate (2) and the small slide plate (3) are all made of high rigidity cast iron.

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