Helicopter pull rod part accessory test equipment and test method

Abstract

The invention discloses helicopter pull rod part accessory testing equipment and a testing method. The helicopter pull rod part accessory testing equipment comprises a base; the support is arranged at the top end of the base, and one end of the support is connected with the top end of the base; the rotating component is arranged at one end of the bracket away from the base; the bracket is connected with one side of the bracket; the tested component is arranged between the base and the rotating assembly, and one end, close to the base, of the tested component is connected with the base; the testing part is arranged between the rotating assembly and the tested part, the top end of the testing part is connected with the rotating assembly, and the bottom end is connected with the top end of the tested part; and the testing part can downwards extrude the tested part through the push-pull force of the rotating assembly and display a testing result. According to the invention, the problem that the detailed function test of the helicopter pull rod cannot be completed is solved, and all the function tests of the long and short helicopter pull rods can be carried out; the testing equipment is simple in structure and convenient to process, and can be used on any workbench; equipment is made of common materials, so that the cost is low; and testing main functions of equipment.

Description

Technical Field

[0001] The invention relates to the field of aviation part accessory maintenance, and in particular to a helicopter tie rod part accessory testing device and a testing method. Background Art

[0002] Helicopters and airplanes are both aviation vehicles. Both require relative motion between the wing surface and the air to generate upward lift and fly in the air. The rotor system is the most distinctive system of the helicopter. Rotor testing involves the entire process of helicopter development. It is becoming increasingly important for rotor preliminary research and verification of rotor design. The rotor test bench is a helicopter rotor measurement and control equipment that is widely used at home and abroad. It is mainly used for experimental research on rotor aerodynamics, dynamics, flight mechanics, etc.

[0003] The maintenance of helicopter tie rod accessories currently relies mainly on on-board testing, which can only determine whether the tie rod currently in use is functioning normally. When the tie rod itself fails, there is no dedicated test equipment to perform detailed functional testing. Summary of the invention

[0004] The object of the present invention is to provide a helicopter tie rod accessory testing device and a testing method, so as to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A helicopter tie rod accessory testing device, comprising:

[0007] Base;

[0008] A bracket, arranged at the top of the base, one end of the bracket is connected to the top of the base;

[0009] A rotating assembly is arranged at one end of the bracket away from the base and connected to one side of the bracket;

[0010] A component to be measured is arranged between the base and the rotating assembly, and one end of the component to be measured adjacent to the base is connected to the base;

[0011] A testing part, arranged between the rotating assembly and the tested component, wherein the top end of the testing part is connected to the rotating assembly, and the bottom end of the testing part is connected to the top end of the tested component;

[0012] The testing part can press the tested component downwards through the push-pull force of the rotating assembly and display the test result.

[0013] In some specific embodiments, the rotating assembly includes:

[0014] A fixing nut is arranged on the bracket, and a threaded hole is formed on the fixing nut; the threaded hole passes through the fixing nut;

[0015] The rotating screw rod is provided with threads along the length direction of the rotating screw rod, and the rotating screw rod is connected to the threaded hole of the fixed nut through the threads.

[0016] In some specific embodiments, the testing unit includes:

[0017] A polytetrafluoroethylene slider is arranged on the bracket;

[0018] A push-pull force gauge mounting seat is L-shaped and is disposed at one end of the polytetrafluoroethylene slider away from the bracket, and the push-pull force gauge mounting seat can slide on the polytetrafluoroethylene slider;

[0019] The push-pull force gauge is arranged in the push-pull force gauge mounting seat, and the top end of the push-pull force gauge is connected to the top wall of the push-pull force gauge mounting seat.

[0020] In some specific embodiments, an abutment block is installed on the top of the push-pull force gauge mounting base; the abutment block abuts against the rotating screw.

[0021] In some specific embodiments, the component under test includes:

[0022] A fixing seat, arranged at the top of the base and fixedly connected to the base;

[0023] The pull rod part is arranged at one end of the fixing seat away from the base, one end of the pull rod part is connected to the fixing seat, and the other end away from the fixing seat is connected to the push-pull force gauge.

[0024] In some specific embodiments, it also includes:

[0025] The magnetic meter base is arranged at one side of the testing part and is fixedly connected to the bracket. A dial indicator is installed on the magnetic meter base.

[0026] A detection method for a helicopter tie rod accessory test device based on the same concept is characterized by comprising the following steps:

[0027] S1. Fix the upper end of the pull rod to the bottom end of the push-pull dynamometer of the test part, and fix the lower end of the pull rod to the top end of the fixing seat;

[0028] S2. Apply push or pull force to the test part by manually turning the handle of the rotating screw, and the relevant push or pull force value is read by the push-pull force gauge;

[0029] S3. Measure the working stroke of the thrust and pull of the pull rod accessories using a dial indicator installed on a magnetic base.

[0030] The beneficial effects of the present invention are as follows: the present application discloses a helicopter tie rod accessory test device, comprising a base; a bracket, arranged at the top of the base, one end of the bracket is connected to the top of the base; a rotating assembly, arranged at the end of the bracket away from the base; connected to one side of the bracket; a tested component, arranged between the base and the rotating assembly, one end of the tested component adjacent to the base is connected to the base; a testing part, arranged between the rotating assembly and the tested component, the top of the testing part is connected to the rotating assembly, and the bottom is connected to the top of the tested component; the testing part can press the tested component downward through the push-pull force of the rotating assembly, and display the test results. The present invention solves the problem that the helicopter tie rod cannot complete detailed functional testing, and can perform full functional testing of both long and short types of helicopter tie rods; the testing equipment has a simple structure and is easy to process, and can be used on any workbench; the equipment is processed using common materials, is easy to process, and has low cost; the main functions of the testing equipment: it can realize the thrust and pull force inspection, working stroke inspection and other testing functions of the two types of tie rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a helicopter tie rod accessory testing device of the present invention;

[0032] Figure 2 It is a rear view of a helicopter tie rod accessory testing device of the present invention;

[0033] Figure 3 The present invention is a test flow chart of a helicopter tie rod accessory test device.

[0034] In the figure, 100, base; 110, rotating screw rod; 120, fixed nut; 130, push-pull force gauge mounting seat; 140, polytetrafluoroethylene slider; 150, push-pull force gauge; 160, pull rod part; 170, fixed seat; 180, bracket. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A helicopter tie rod 160 accessory testing device shown includes a base 100; a bracket 180, which is disposed at the top of the base 100, and one end of the bracket 180 is connected to the top of the base 100;

[0037] The rotating assembly is disposed at one end of the bracket 180 away from the base 100 and connected to one side of the bracket 180;

[0038] The component to be tested is arranged between the base 100 and the rotating assembly, and one end of the component to be tested adjacent to the base 100 is connected to the base 100;

[0039] The testing part is arranged between the rotating assembly and the component to be tested, the top end of the testing part is connected to the rotating assembly, and the bottom end of the testing part is connected to the top end of the component to be tested;

[0040] The test section can press the tested component downward through the push-pull force of the rotating assembly and display the test results.

[0041] In some specific embodiments, the rotating assembly includes:

[0042] The fixing screw nut 120 is disposed on the bracket 180 , and a threaded hole is formed on the fixing screw nut 120 ; the threaded hole penetrates the fixing screw nut 120 ;

[0043] The rotating screw rod 110 is provided with threads along the length direction of the rotating screw rod 110 , and the rotating screw rod 110 is connected to the threaded hole of the fixed screw nut 120 through threads.

[0044] The main structures of a rotating screw are: screw (screw), nut (nut), and supporting structure.

[0045] The screw (lead screw) is the main part of the rotating screw, usually made of alloy steel or stainless steel, with threads on the surface. The nut (screw nut) has threads inside that match the screw (screw). The screw (screw) or nut (screw nut) performs relative motion through rotation to transmit motion and force.

[0046] In some specific embodiments, the testing unit includes:

[0047] The polytetrafluoroethylene slider 140 is disposed on the bracket 180;

[0048] The push-pull force gauge mounting seat 130 is L-shaped and is arranged at one end of the polytetrafluoro slider 140 away from the bracket 180. The push-pull force gauge mounting seat 130 can slide on the polytetrafluoro slider 140; the polytetrafluoro slider 140 is also used when fixed behind the bracket 180. The push-pull force gauge base 100 is designed with a polytetrafluoro slider 140. The polytetrafluoro material is a self-lubricating material and does not require the use of lubricating oil for maintenance. It can reduce friction when the equipment is working, making operation more labor-saving.

[0049] The push-pull force gauge 150 is disposed in the push-pull force gauge mounting seat 130 , and a top end thereof is connected to a top wall of the push-pull force gauge mounting seat 130 .

[0050] In some specific embodiments, an abutment block is installed at the top of the push-pull force gauge mounting base 130 ; the abutment block abuts against the rotating screw 110 .

[0051] In some specific embodiments, the component under test includes:

[0052] A fixing seat 170 is disposed on the top of the base 100 and is fixedly connected to the base 100;

[0053] The pull rod 160 is disposed at one end of the fixing seat 170 away from the base 100 . One end of the pull rod 160 is connected to the fixing seat 170 , and the other end away from the fixing seat 170 is connected to the push-pull force gauge 150 .

[0054] In some specific embodiments, it also includes:

[0055] The magnetic meter stand is arranged at one side of the testing part and is fixedly connected to the bracket 180 . A dial indicator is installed on the magnetic meter stand.

[0056] In this embodiment, one end of the pull rod 160 to be tested is installed on the test end of the push-pull force gauge 150, and the other end is installed on the fixed seat 170 of the test equipment. By rotating the lead screw, thrust and pull are applied to the accessories of the pull rod 160. The thrust and pull values ​​are read by the push-pull force gauge 150, and the thrust and pull value test of the accessories of the pull rod 160 can be realized. The magnetic meter base is adsorbed on the mounting bracket 180 of the test equipment, and the working stroke of the thrust and pull of the accessories of the pull rod 160 is measured by the dial indicator installed on the magnetic meter base.

[0057] By rotating the lead screw to adjust the distance between the push-pull force gauge mounting seat 130 and the bottom fixing seat 170 of the testing equipment, the installation test of the long and short pull rod parts 160 accessories can be achieved.

[0058] Working principle: The rotating screw and the fixed nut 120 are combined, and the rotating screw is used for rotational feeding to apply corresponding pressure or tension to the force-bearing part of the pull rod part 160. The dial indicator with a magnetic base is adsorbed on the bracket 180, and the probe of the indicator is placed on the component to measure the displacement of the component under tension or pressure.

[0059] A detection method for a helicopter tie rod accessory test device based on the same concept is characterized by comprising the following steps:

[0060] S1. Fix the upper end of the pull rod to the bottom end of the push-pull dynamometer of the test part, and fix the lower end of the pull rod to the top end of the fixing seat;

[0061] S2. Apply push or pull force to the test part by manually turning the handle of the rotating screw, and the relevant push or pull force value is read by the push-pull force gauge;

[0062] S3. Measure the working stroke of the thrust and pull of the pull rod accessories using a dial indicator installed on a magnetic base.

[0063] The beneficial effects of the present invention are as follows: the present application discloses a helicopter tie rod 160 accessory test device, comprising a base 100; a bracket 180, arranged at the top of the base 100, one end of the bracket 180 is connected to the top of the base 100; a rotating assembly, arranged at one end of the bracket 180 away from the base 100; connected to one side of the bracket 180; a tested component, arranged between the base 100 and the rotating assembly, one end of the tested component adjacent to the base 100 is connected to the base 100; a testing unit, arranged between the rotating assembly and the tested component, the top of the testing unit is connected to the rotating assembly, and the bottom is connected to the top of the tested component; the testing unit can press the tested component downward through the push-pull force of the rotating assembly, and display the test results. The present invention solves the problem that the helicopter tie rod cannot complete detailed functional testing, and can perform all functional tests of both long and short helicopter tie rods; the testing equipment has a simple structure and is easy to process, and can be used on any workbench; the equipment is processed using common materials, is easy to process, and has low cost; the main functions of the testing equipment: it can realize the thrust and pull force inspection, working stroke inspection and other test functions of the two types of tie rods.

Claims

1. A helicopter tie rod accessory testing device, characterized in that: include: Base; A bracket, arranged at the top of the base, one end of the bracket is connected to the top of the base; A rotating assembly is arranged at one end of the bracket away from the base and connected to one side of the bracket; A component to be measured is arranged between the base and the rotating assembly, and one end of the component to be measured adjacent to the base is connected to the base; A testing part, arranged between the rotating assembly and the tested component, wherein the top end of the testing part is connected to the rotating assembly, and the bottom end of the testing part is connected to the top end of the tested component; The testing part can press the tested component downwards through the push-pull force of the rotating assembly and display the test result.

2. The helicopter tie rod accessory testing device according to claim 1, characterized in that: The rotating assembly comprises: A fixing nut is arranged on the bracket, and a threaded hole is formed on the fixing nut; the threaded hole passes through the fixing nut; The rotating screw rod is provided with threads along the length direction of the rotating screw rod, and the rotating screw rod is connected to the threaded hole of the fixed nut through the threads.

3. The helicopter tie rod accessory testing device according to claim 2, characterized in that: The testing department includes: A polytetrafluoroethylene slider is arranged on the bracket; A push-pull force gauge mounting seat is L-shaped and is disposed at one end of the polytetrafluoroethylene slider away from the bracket, and the push-pull force gauge mounting seat can slide on the polytetrafluoroethylene slider; The push-pull force gauge is arranged in the push-pull force gauge mounting seat, and the top end of the push-pull force gauge is connected to the top wall of the push-pull force gauge mounting seat.

4. The helicopter tie rod accessory testing device according to claim 3, characterized in that: An abutment block is installed on the top of the push-pull force gauge mounting seat; the abutment block abuts against the rotating screw rod.

5. The helicopter tie rod accessory testing device according to claim 4, characterized in that: The components tested include: A fixing seat, arranged at the top of the base and fixedly connected to the base; The pull rod part is arranged at one end of the fixing seat away from the base, one end of the pull rod part is connected to the fixing seat, and the other end away from the fixing seat is connected to the push-pull force gauge.

6. The helicopter tie rod accessory testing device according to claim 5, characterized in that: Also includes: The magnetic meter base is arranged at one side of the testing part and is fixedly connected to the bracket. A dial indicator is installed on the magnetic meter base.

7. A method for testing a helicopter tie rod accessory test device, characterized in that: The following steps are involved: S1. Fix the upper end of the pull rod to the bottom end of the push-pull dynamometer of the test part, and fix the lower end of the pull rod to the top end of the fixing seat; S2. Apply push or pull force to the test part by manually turning the handle of the rotating screw, and the relevant push or pull force value is read by the push-pull force gauge; S3. Measure the working stroke of the thrust and pull of the pull rod accessories using a dial indicator installed on a magnetic base.

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