Fatigue test tool for flow deflector

Abstract

The utility model discloses a flow deflector fatigue test tool in the technical field of test tools, which comprises a tool frame arranged on a test bed, a support is further arranged on the test bed, an actuating cylinder is hung on the support, a power end of the actuating cylinder is connected with a tool plate through a pull rope, the tool plate is used for the front end of a test piece, the rear end of the test piece is fixed on the tool frame, and the test piece is fixed on the tool frame. According to the utility model, the strength, the rigidity and the service life are very considerable, the structure is simple, the contained standard parts can be directly purchased and used, the manufacturing and assembling process is simplified, the operation of testers is simple and convenient, the fatigue performance in the service life can be quickly and effectively tested, the research and development time is shortened, and the cost is reduced; therefore, the device can be applied to the fatigue test of the flow deflector of the airplane.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, in particular to a guide vane fatigue test tooling. Background Art

[0002] At present, in the early test and improvement stage of aircraft guide vanes, it is necessary to go to a special laboratory, which takes a lot of time and consumes a lot of costs, such as transportation, labor, time, etc. Therefore, it is urgent to design a set of tooling equipment that can conduct fatigue tests by itself, so as to reduce time and cost. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a guide vane fatigue test fixture, which saves test time and reduces test costs.

[0004] The purpose of the utility model is achieved as follows: a guide vane fatigue test fixture, including a fixture frame installed on a test bench, the test bench is also provided with a bracket, an actuator is suspended on the bracket, the power end of the actuator is connected to a fixture plate via a pull rope, the fixture plate is used for the front end of the test piece, the rear end of the test piece is fixed on the fixture frame, and a strain gauge is provided on the top of the test piece.

[0005] Furthermore, the tooling frame includes a bottom plate, a vertical frame is arranged on the bottom plate, the front side of the vertical frame is a test piece mounting surface, and a plurality of mounting holes are opened on the mounting surface.

[0006] Furthermore, a reinforcing rib is provided on the back of the stand, and the reinforcing rib connects the stand and the bottom plate.

[0007] Furthermore, the bottom plate is provided with a plurality of waist-shaped notches, and the test bench is provided with a plurality of mounting grooves.

[0008] Furthermore, the tooling plate includes an outer plate and an inner plate. The outer plate is U-shaped, and its two sides are attached to the outer sides of the front end of the test piece. The inner plate is attached to the inner sides of the front end of the test piece. The outer plate, the test piece, and the inner plate are connected and fixed by fasteners.

[0009] Furthermore, a lifting lug is provided at the front end of the outer plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the strength, rigidity and service life of the utility model are very considerable, and the structure is simple. The standard parts contained in the utility model can be directly purchased and used, which simplifies the manufacturing and assembly process. The test personnel can operate easily and quickly to measure the fatigue performance during the service life. The research and development time and cost are shortened, and the work efficiency is greatly improved. The utility model can be used in the fatigue test of aircraft guide vanes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0013] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0014] Figure 3 It is a schematic diagram of the structure of the tooling frame in the utility model.

[0015] Figure 4 This is a schematic diagram of the support structure in the utility model.

[0016] Figure 5 It is a schematic diagram of the structure of the tooling plate in the utility model.

[0017] Among them, 100 test bench, 200 tooling frame, 201 bottom plate, 201a waist-shaped notch, 202 vertical frame, 202a fixed plate, 203 reinforcement ribs, 300 bracket, 301 gantry, 302 hanger, 400 actuator, 500 pull rope, 600 tooling plate, 601 outer plate, 602 inner plate, 603 lifting ear, 700 strain gauge, 800 test piece. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] As shown in Figures 1-5, a guide vane fatigue test fixture includes a fixture frame 200 installed on a test bench 100. The test bench 100 is also provided with a bracket 300. An actuator 400 is suspended on the bracket 300. The power end of the actuator 400 is connected to a fixture plate 600 via a pull rope 500. The fixture plate 600 is used for the front end of a test piece 800. The rear end of the test piece 800 is fixed on the fixture frame 200. A strain gauge 700 is provided on the top of the test piece 800.

[0020] Specifically, the tooling frame 200, the test bench 100, and the bracket 300 are welded with standard steel pipes and steel plates. The probability of structural defects after welding is small. The overall machining after welding ensures the manufacturing and installation accuracy. The surface is painted with anti-rust paint to extend the service life. The bracket 300 includes a pair of gantries 301, which are connected to each other via a hanger 302, and the actuator 400 is installed on the hanger 302.

[0021] Here’s how it works:

[0022] The fixture frame 200 is connected to the test piece 800 by bolts, the bottom of the fixture frame 200 is fixed on the test bench 100 by bolts, and the fixture plate 600 is connected to the front end of the test piece 800 in the test area by bolts; the actuator 400 on the bracket 300 drives the rope to pull the fixture plate 600 to assess the fatigue performance of the guide vane during its service life; according to the static strength calculation result of the guide vane, the strain gauge 700 is used to calibrate the test load at the maximum bending moment to the maximum strain calculated by the static strength, and the fatigue test is carried out using this calibrated load.

[0023] Furthermore, the tooling frame 200 includes a bottom plate 201 , on which a stand 202 is disposed. The front side of the stand 202 is a mounting surface for the test piece 800 , and a plurality of mounting holes are provided on the mounting surface.

[0024] Specifically, the stand 202 is formed by welding a plurality of steel pipes into a square structure, a fixing plate 202a is welded on the front side, and a plurality of mounting holes are provided on the fixing plate 202a.

[0025] It should be noted that after adjusting the position of the fixture frame 200, the rear end of the test piece 800 is fixed on the fixing plate 202a and fixed by bolt connection. Such a structure is easy to manufacture and has low cost.

[0026] Furthermore, a reinforcing rib 203 is provided on the back of the stand 202 , and the reinforcing rib 203 connects the stand 202 and the bottom plate 201 .

[0027] Specifically, the reinforcing rib 203 is made of a square tube, and the frame 202 and the bottom plate 201 are connected by welding.

[0028] It should be noted that the force direction of this test is the rear of the stand 202, and the force in this direction is offset by providing the reinforcing ribs 203, thereby ensuring the test efficiency.

[0029] Furthermore, a plurality of waist-shaped notches 201 a are provided on the bottom plate 201 , and a plurality of mounting grooves are provided on the test bench 100 .

[0030] It should be noted that such a design can conveniently and efficiently adjust the position of the stand 202, further improving the test efficiency.

[0031] Furthermore, the tooling plate 600 includes an outer plate 601 and an inner plate 602. The outer plate 601 is U-shaped, with two sides attached to the outer sides of the front end of the test piece 800, and the inner plate 602 is attached to the inner sides of the front end of the test piece 800. The outer plate 601, the test piece 800, and the inner plate 602 are connected and fixed by fasteners.

[0032] It should be noted that the outer plate 601 cooperates with the two inner plates 602 to be fixedly connected to both sides of the front end of the test piece 800, and bolts are used as fasteners, so that the reliability of the connection of the front end of the test piece 800 can be ensured.

[0033] Furthermore, a lifting lug 603 is provided at the front end of the outer plate 601 .

[0034] It should be noted that the design of the lifting ear 603 facilitates the actuator 400 to apply force to the test piece 800 .

[0035] In summary, the utility model can assess the fatigue performance of the guide vane during its service life, and has high economy, simple structure, and some standard parts can be directly purchased and used, which simplifies the manufacturing and assembly process, makes the assembly more simplified, and greatly improves work efficiency.

[0036] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A guide vane fatigue test tool, characterized in that: The invention comprises a tooling frame (200) installed on a test bench (100), the test bench (100) is also provided with a bracket (300), an actuating cylinder (400) is suspended on the bracket (300), a power end of the actuating cylinder (400) is connected to a tooling plate (600) via a pull rope (500), the tooling plate (600) is used for the front end of a test piece (800), the rear end of the test piece (800) is fixed on the tooling frame (200), and a strain gauge (700) is provided on the top of the test piece (800).

2. A guide vane fatigue test fixture according to claim 1, characterized in that: The tooling frame (200) comprises a bottom plate (201), a stand (202) is provided on the bottom plate (201), the front side of the stand (202) is a test piece (800) mounting surface, and a plurality of mounting holes are provided on the mounting surface.

3. A guide vane fatigue test fixture according to claim 2, characterized in that: A reinforcing rib (203) is provided on the back of the stand (202), and the reinforcing rib (203) connects the stand (202) and the bottom plate (201).

4. A guide vane fatigue test fixture according to claim 2, characterized in that: The bottom plate (201) is provided with a plurality of waist-shaped notches (201a), and the test bench (100) is provided with a plurality of installation grooves.

5. A guide vane fatigue test fixture according to any one of claims 1 to 4, characterized in that: The tooling plate (600) comprises an outer plate (601) and an inner plate (602); the outer plate (601) is U-shaped, with two sides affixed to the outer sides of the front end of the test piece (800); the inner plate (602) is affixed to the inner sides of the front end of the test piece (800); the outer plate (601), the test piece (800), and the inner plate (602) are connected and fixed via fasteners.

6. A guide vane fatigue test fixture according to claim 5, characterized in that: A lifting lug (603) is provided at the front end of the outer plate (601).

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