An acceptance test device for a return force connecting rod actuator

Abstract

The present application provides an acceptance test device for a return-force link actuator, the test device comprising: a trolley; a rocker mechanism comprising a rocker, the rocker mechanism being arranged on the trolley; wherein the rocker comprises a first pin, a second pin and a third pin; a loading cylinder fixing seat being arranged on the trolley; a strut earring seat mechanism being arranged on the loading cylinder fixing seat; wherein, when performing an acceptance test, the first end of the return-force link actuator is connected to the strut earring seat mechanism, the second end of the return-force link actuator is connected to the first pin, and the third end of the return-force link actuator is connected to the second pin; the present application provides a test environment including multiple test items with and without load, with complete test functions, high test flexibility and reliability.

Description

Technical Field

[0001] The present application belongs to the field of actuator testing technology, and in particular relates to an acceptance testing device for a return force connecting rod actuator. Background Art

[0002] There are many types of actuators. A return rod actuator is used on aircraft. In addition to the actuator cylinder structure, this type of actuator has a support rod and a return rod. Compared with the point-to-point actuator, it greatly reduces the force of the rudder load reacting on the body structure, thereby greatly reducing the weight of the actuator and obtaining a higher system stiffness. However, at the same time, the motion characteristics and force transmission path of this actuator are more complicated.

[0003] When developing the actuator, it is necessary to carry out the test items of the acceptance test procedure. The test items of the actuator acceptance test procedure are divided into two types: load test and no load test, including pressure resistance, clearance, internal leakage, external leakage, polarity, variable throttle valve and other items.

[0004] At present, the acceptance test procedures of the return link actuator, such as clearance, variable throttle valve and other test items that require load testing, are carried out by adding weights. This method is relatively crude and lacks test flexibility and reliability.

[0005] Secondly, the multiple test items in the current acceptance test procedure are often performed using multiple test devices, and there is no integrated test device with load testing capability that meets the acceptance test procedure for the return connecting rod actuator. Summary of the invention

[0006] In view of the above technical problems, the present application provides an acceptance test device for a return force connecting rod actuator, the test device comprising:

[0007] Cart;

[0008] A rocker mechanism, comprising a rocker, wherein the rocker mechanism is arranged on the cart; wherein the rocker comprises a first pin, a second pin and a third pin;

[0009] A loading cylinder fixing seat, arranged on the cart;

[0010] A support rod earring seat mechanism, arranged on the loading cylinder fixing seat;

[0011] Wherein, during the acceptance test, the first end of the return force link actuator is connected to the support rod earring seat mechanism, the second end of the return force link actuator is connected to the first pin shaft, and the third end of the return force link actuator is connected to the second pin shaft.

[0012] Preferably, the testing device further comprises:

[0013] A loading cylinder, one end of which is connected to the loading cylinder fixing seat, and the other end is connected to the third pin shaft. The loading cylinder is used to provide a loading force to the return force connecting rod actuator so that the return force connecting rod actuator is in a loaded state.

[0014] Preferably, the rocker arm mechanism further comprises:

[0015] A left rocker arm base is arranged on the cart;

[0016] A right rocker arm base is arranged on the cart, and the position of the right rocker arm base corresponds to that of the left rocker arm base;

[0017] A rocker crossbeam, one side of which is connected to the right rocker base, and the other side of which is connected to the left rocker base; wherein the rocker is arranged on the rocker crossbeam;

[0018] An angular displacement sensor is arranged on the left rocker arm base or the right rocker arm base, and the angular displacement sensor is used to measure the angular displacement of the rocker arm cross beam.

[0019] Preferably, the first pin is a piston rod clevis pin, the second pin is a return rod clevis pin, and the third pin is a loading cylinder clevis pin.

[0020] Preferably, the loading cylinder fixing seat comprises:

[0021] A semi-enclosed structure, wherein a vertical plate with holes is provided inside the semi-enclosed structure, and the vertical plate with holes is connected to one end of the loading cylinder.

[0022] Preferably, the testing device further comprises:

[0023] The pulling pressure sensor is arranged between the third pin shaft and the other end of the loading cylinder.

[0024] Preferably, the connection point between the second end and the first pin is a first connection point A, and the connection point between the rocker cross beam and the left rocker base or the right rocker base is a second connection point O;

[0025] Among them, when the return force link actuator is in action, the center of the arc trajectory of the first connection point A is colinear with the second connection point O, so as to achieve the same motion state of the return force link actuator during testing and when working on the machine.

[0026] Preferably, the loading cylinder provides the loading force to the return link actuator through servo control.

[0027] Beneficial technical effects of this application:

[0028] The present application solves the current test item requirements for the acceptance test device of the return force connecting rod actuator, and provides a test environment including multiple test items with and without load, with complete test functions, high test flexibility and reliability; the loading cylinder and the actuator to be tested are arranged on the same side above and below, and the structure is compact; the piston rod force arm of the rocker arm of the actuator to be tested is close in length to the loading cylinder force arm, the loading cylinder is simple to control, the control performance is good, and the economy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a return force connecting rod actuator to be tested provided in an embodiment of the present application;

[0030] Figure 2 A motion principle diagram of a return force connecting rod actuator to be tested provided in an embodiment of the present application;

[0031] Figure 3 An axonometric structural diagram of an acceptance test device for a return force connecting rod actuator provided in an embodiment of the present application;

[0032] Figure 4 A front view structural diagram of an acceptance test device for a return force connecting rod actuator provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of a rocker arm mechanism provided in an embodiment of the present application;

[0034] Figure 6 A motion principle diagram of an acceptance test device for a return force connecting rod actuator provided in an embodiment of the present application;

[0035] Figure 7 Another motion principle diagram of a return force connecting rod actuator to be tested provided in an embodiment of the present application;

[0036] Figure 8 A motion principle diagram of another acceptance test device for a return force connecting rod actuator provided in an embodiment of the present application;

[0037] Among them: 1-return link actuator; 2-rocker arm mechanism; 3-trolley; 4-support rod earring seat mechanism; 5-loading cylinder fixing seat; 6-loading cylinder; 7-tension pressure sensor; 201-left rocker arm base; 202-right rocker arm base; 203-rocker arm crossbeam; 204-rocker arm; 205-piston rod earring pin; 206-return rod earring pin; 207-loading cylinder earring pin; 208-angular displacement sensor. DETAILED DESCRIPTION

[0038] The present application provides an acceptance test device for a return force connecting rod actuator, which has test functions specified in the acceptance test procedure test outline including pressure resistance, clearance, internal leakage, external leakage, polarity, variable throttle valve, etc.

[0039] In an embodiment of the present application, the present application provides an acceptance test device for a return force connecting rod actuator, the acceptance test device includes a return force connecting rod actuator, a rocker mechanism, a cart, a strut earring seat mechanism, a loading cylinder fixing seat, and a loading cylinder. The rocker mechanism and the loading cylinder fixing seat are fixed on a fixed plane of the cart, the strut earring seat mechanism is installed on the upper part of the loading cylinder fixing seat, the loading cylinder is installed in a pin hole inside the loading cylinder fixing seat, and the loading cylinder body can rotate and swing around the pin hole axis.

[0040] The rocker mechanism includes a left rocker base, a right rocker base, a rocker beam, a rocker, a piston rod clevis pin, a return rod clevis pin, a loading cylinder clevis pin, and an angular displacement sensor. The left rocker base and the right rocker base are fixed on a fixed plane of the cart. The rocker beam is mounted on the left rocker base and the right rocker base by means of a bearing, and can rotate and swing around the bearing axis. The rocker is fixed on the rocker beam, and the angular displacement sensor is fixed on the left rocker base, which can output the rotation angle of the rocker beam in real time, and further obtain the piston rod stroke of the return rod actuator to be measured.

[0041] Among them, the piston rod earring pin, the return rod earring pin, and the loading cylinder earring pin are installed on the rocker arm through bushings, nuts, stop pins and other structures. The piston rod earring on the loading cylinder is connected to the loading cylinder earring pin. A tension and pressure sensor is installed on the loading cylinder piston rod, which can directly measure the magnitude of the force applied by the loading cylinder, and further derive the force acting on the piston rod of the return connecting rod actuator to be measured through the force arm relationship.

[0042] The installation method of the return link actuator is as follows: the return link actuator strut earring is connected to the earring pin of the strut earring seat mechanism, the return link actuator piston rod earring is connected to the piston rod earring pin, and the return link actuator return rod earring is connected to the return rod earring pin. The oil inlet and return port of the loading cylinder is connected to the oil source through a control mechanism, and different forms of loading requirements are achieved through servo control.

[0043] Among them, the installation position of the return force connecting rod actuator, including the shape, size and positioning dimensions of the matching position between the rocker arm mechanism and the strut earring seat mechanism and the actuator, are determined according to the corresponding position dimensions of the actuator corresponding to the aircraft model, to ensure that the state of the actuator after installation is as similar as possible to the position state on the aircraft.

[0044] Among them, the rotation axis of the rocker arm crossbeam and the hinge point where the return force connecting rod actuator is installed behind the acceptance test device, that is, the center of the circle of the central arc trajectory of the piston rod earring when the actuator is in action, are colinear, so as to achieve the same motion state of the actuator during testing and when working on the machine.

[0045] It should be noted that the loading cylinder of the acceptance test device for the return force connecting rod actuator provided by the present application and the return force connecting rod actuator to be tested are arranged on the same side of the rocker arm mechanism, distributed up and down; the structure is compact, saving the floor space of the acceptance test device.

[0046] Furthermore, the acceptance test device for the return force connecting rod actuator provided by the present application realizes that the piston rod force arm of the actuator to be tested of the rocker arm is close to the length of the loading cylinder force arm (which can be set to be equal) in the spatial structure through structural design. At this time, the loading cylinder force arm is relatively small. When carrying out the test items, the required movement speed of the loading cylinder is relatively small, which reduces the control difficulty of the loading cylinder and improves the control performance and effect of the loading cylinder; at the same time, a loading cylinder with a smaller stroke can be selected to reduce costs.

[0047] The present application integrates and solves the test item requirements of the current acceptance test device of the return force connecting rod actuator, and provides a test environment including multiple test items with and without load, with complete test functions, high test flexibility and reliability; the loading cylinder and the actuator to be tested are arranged on the same side above and below, and the structure is compact; the piston rod force arm of the rocker arm of the actuator to be tested is close in length to the loading cylinder force arm, the loading cylinder is simple to control, the control performance is good, and the economy is high.

[0048] See also Figure 1-8 In actual applications, different return force connecting rod actuators have different motion characteristics and mechanical characteristics. The structure of the acceptance test device can be designed accordingly according to the motion characteristics of different actuators. The present invention is further described below in conjunction with the embodiments.

[0049] In other embodiments of the present application, the structural features and movement principle of the return force connecting rod actuator to be tested are as follows: Figure 1 , Figure 2 As shown. AD is the actuator part, BE is the return rod, EK is the strut, and the actuator part is hinged to the return rod at point D. When the return rod actuator to be tested is working, the center point A of the piston rod earring circle moves in an arc around the hinge point O, and the arc radius (i.e. the distance between AO) is R1. The center point B of the return rod earring circle moves in an arc around the hinge point O, and the arc radius (i.e. the distance between BO) is R2. When the actuator is extended and retracted to the maximum stroke, the maximum center angles swept by the two earring axes around the hinge point O are α and β respectively. Since the earring end of the return rod moves when the actuator is actuated, the hinge point D of the actuator will also be displaced, and the actuator, strut, and return rod will all move ( Figure 2 , Figure 6 not shown).

[0050] In other embodiments of the present application, an acceptance test device for a return force connecting rod actuator, such as Figure 3 , Figure 4 , Figure 5As shown, it includes a return force connecting rod actuator 1, a rocker mechanism 2, a cart 3, a support rod earring seat mechanism 4, a loading cylinder fixing seat 5, and a loading cylinder 6. The rocker mechanism 2 and the loading cylinder fixing seat 5 are fixed on the fixed plane of the cart 3, the support rod earring seat mechanism 4 is installed on the upper part of the loading cylinder fixing seat 5, and the loading cylinder 6 is installed in the pin hole inside the loading cylinder fixing seat 5, and the loading cylinder body can rotate and swing around the pin hole axis.

[0051] Among them, the rocker mechanism 2 includes a left rocker base 201, a right rocker base 202, a rocker beam 203, a rocker 204, a piston rod earring pin 205, a return rod earring pin 206, a loading cylinder earring pin 207, and an angular displacement sensor 208. The left rocker base 201 and the right rocker base 202 are fixed on the fixed plane of the cart 3. The rocker beam 203 is installed on the left rocker base 201 and the right rocker base 202 by means of bearings, and can rotate and swing around the bearing axis. The rocker 204 is fixed on the rocker beam 203, and the angular displacement sensor 208 is fixed on the left rocker base 201, which can output the rotation angle of the rocker beam 203 in real time, and further obtain the piston rod stroke of the return connecting rod actuator 1 to be measured.

[0052] Among them, the piston rod earring pin 205, the return rod earring pin 206, and the loading cylinder earring pin 207 are installed on the rocker arm 204. The piston rod earring on the loading cylinder 6 is connected to the loading cylinder earring pin 207. A tension pressure sensor 7 is installed on the piston rod of the loading cylinder 6, which can measure the magnitude of the force applied by the loading cylinder, and further obtain the force acting on the piston rod of the return connecting rod actuator 1 to be measured through the force arm relationship.

[0053] The installation method of the return link actuator 1 is as follows: the return link actuator 1 support rod earring (first end) is connected to the earring pin of the support rod earring seat mechanism 4, the return link actuator 1 piston rod earring (second end) is connected to the piston rod earring pin 205, and the return link actuator 1 return rod earring (third end) is connected to the return rod earring pin 206. The oil inlet and return port of the loading cylinder 6 is connected to the oil source through the control mechanism, and different forms of loading requirements are realized through servo control.

[0054] Among them, reference Figure 6As shown in the working principle diagram of the acceptance test device for the return connecting rod actuator, when designing the structure of the rocker mechanism 2, the distance BO between the rotation axis projection point O of the rocker cross beam 203 and the axis projection point B of the return rod earring pin 206 is R2. At this time, the distance AB between the axis projection point A of the piston rod earring pin 205 on the rocker arm 204 and the axis projection point B of the return rod earring pin 206 is R1+R2, and the distance BC between the axis projection point B of the return rod earring pin 206 on the rocker arm 204 and the axis projection point C of the loading cylinder earring pin 207 is R1-R2. When the loading cylinder 6 retracts, the rocker arm reaches the A1C1 position and the actuator extends; when the loading cylinder 6 extends, the rocker arm reaches the A2C2 position and the actuator retracts; the arc radius of the projection point C of the axis of the loading cylinder earring pin 207 and the projection point A of the axis of the piston rod earring pin 205 on 204 around point O are the same, both are R1, and the ratio of the lever arm is 1:1.

[0055] In other embodiments of the present application, the movement principle of the return force connecting rod actuator 1 to be tested is as follows: Figure 7 As shown. AD is the actuator part, OE is the return rod, EK is the support rod, and the actuator part is hinged to the return rod at point D. What is different from the actuator to be tested in the above embodiment is that the center point O of the earring circle of the return rod coincides with the hinge point of the actuator (both are marked as point O). When the return connecting rod actuator to be tested is working, the center point A of the earring circle of the piston rod moves in an arc around the hinge point O, and the radius of the arc (i.e., the distance between AO) is R3. When the actuator is extended and retracted to the maximum stroke, the maximum center angles swept by the two earring axes around the hinge point O are α1 and β1 respectively. What is different from the actuator to be tested in the above embodiment is that when the actuator is telescopic, the earring end of the return rod does not move, and the action of the entire actuator is only that the actuator body swings around the hinge point D of the actuator while the piston rod is telescopic.

[0056] In other embodiments of the present application, an acceptance test device for a return force connecting rod actuator, such as Figure 3 , Figure 4 , Figure 5 As shown, it includes a return force connecting rod actuator 1, a rocker mechanism 2, a cart 3, a support rod earring seat mechanism 4, a loading cylinder fixing seat 5, and a loading cylinder 6. The rocker mechanism 2 and the loading cylinder fixing seat 5 are fixed on the fixed plane of the cart 3, the support rod earring seat mechanism 4 is installed on the upper part of the loading cylinder fixing seat 5, and the loading cylinder 6 is installed in the pin hole inside the loading cylinder fixing seat 5, and the loading cylinder body can rotate and swing around the pin hole axis.

[0057] Among them, the rocker mechanism 2 includes a left rocker base 201, a right rocker base 202, a rocker beam 203, a rocker 204, a piston rod earring pin 205, a return rod earring pin 206, a loading cylinder earring pin 207, and an angular displacement sensor 208. The left rocker base 201 and the right rocker base 202 are fixed on the fixed plane of the cart 3. The rocker beam 203 is installed on the left rocker base 201 and the right rocker base 202 by means of bearings, and can rotate and swing around the bearing axis. The rocker 204 is fixed on the rocker beam 203, and the angular displacement sensor 208 is fixed on the left rocker base 201, which can output the rotation angle of the rocker beam 203 in real time, and further obtain the piston rod stroke of the return connecting rod actuator 1 to be measured.

[0058] Among them, the piston rod earring pin 205, the return rod earring pin 206, and the loading cylinder earring pin 207 are installed on the rocker arm 204. The piston rod earring on the loading cylinder 6 is connected to the loading cylinder earring pin 207. A tension pressure sensor 7 is installed on the piston rod of the loading cylinder 6, which can measure the magnitude of the force applied by the loading cylinder, and further obtain the force acting on the piston rod of the return connecting rod actuator 1 to be measured through the force arm relationship.

[0059] The installation method of the return link actuator 1 is as follows: the return link actuator 1 strut earring is connected to the earring pin of the strut earring seat mechanism 4, the return link actuator 1 piston rod earring is connected to the piston rod earring pin 205, and the return link actuator 1 return rod earring is connected to the return rod earring pin 206. The oil inlet and return port of the loading cylinder 6 is connected to the oil source through the control mechanism, and different forms of loading requirements are realized through servo control.

[0060] Among them, reference Figure 8 The working principle diagram of the acceptance test device for the return connecting rod actuator shown in the figure shows that when designing the structure of the rocker mechanism 2, the rotation axis of the rocker cross beam 203 is coaxial with the return rod earring pin 206, and the projection point is point O. At this time, the distance AO between the axis projection point A of the piston rod earring pin 205 on the rocker arm 204 and the axis projection point O of the return rod earring pin 206 is R3, and the distance OC between the axis projection point O of the return rod earring pin 206 on the rocker arm 204 and the axis projection point C of the loading cylinder earring pin 207 is R3. When the loading cylinder 6 retracts, the rocker reaches the A1C1 position, and the actuator extends; when the loading cylinder 6 extends, the rocker reaches the A2C2 position, and the actuator retracts; the arc radius of the projection point C of the axis of the loading cylinder earring pin 207 and the projection point A of the axis of the piston rod earring pin 205 on 204 around point O is the same, both R3, and the ratio of the force arm is 1:1.

Claims

1. An acceptance test device for a return force connecting rod actuator, characterized in that: The testing device comprises: Cart; A rocker mechanism, comprising a rocker, wherein the rocker mechanism is arranged on the cart; wherein the rocker comprises a first pin, a second pin and a third pin, wherein the first pin is a piston rod earring pin, the second pin is a return rod earring pin, and the third pin is a loading cylinder earring pin; A loading cylinder fixing seat, arranged on the cart; A support rod earring seat mechanism is arranged on the loading cylinder fixing seat; wherein, during the acceptance test, the first end of the return force connecting rod actuator is connected to the support rod earring seat mechanism, the second end of the return force connecting rod actuator is connected to the first pin shaft, and the third end of the return force connecting rod actuator is connected to the second pin shaft; A loading cylinder, one end of which is connected to the loading cylinder fixing seat, and the other end of which is connected to the third pin shaft, and the loading cylinder is used to provide a loading force to the return force connecting rod actuator, so that the return force connecting rod actuator is in a loaded state; Wherein, the rocker arm mechanism further comprises: A left rocker arm base is arranged on the cart; A right rocker arm base is arranged on the cart, and the position of the right rocker arm base corresponds to that of the left rocker arm base; A rocker crossbeam, one side of which is connected to the right rocker base, and the other side of which is connected to the left rocker base; wherein the rocker is arranged on the rocker crossbeam; An angular displacement sensor is arranged on the left rocker arm base or the right rocker arm base, and the angular displacement sensor is used to measure the angular displacement of the rocker arm crossbeam; Among them, when designing the structure of the rocker mechanism, the distance BO between the projection point O of the rotation axis of the rocker beam and the projection point B of the earring pin axis of the return rod is R2; at this time, the distance AB between the projection point A of the earring pin axis of the piston rod and the projection point B of the earring pin axis of the return rod is R1+R2, and the distance BC between the projection point B of the earring pin axis of the return rod and the projection point C of the earring pin axis of the loading cylinder is R1-R2; when the loading cylinder retracts, the rocker arm reaches the A1C1 position, and the actuator extends; when the loading cylinder extends, the rocker arm reaches the A2C2 position, and the actuator retracts; the arc radius of the projection point C of the earring pin axis of the loading cylinder and the projection point A of the earring pin axis of the piston rod around the point O is the same, both are R1, and the ratio of the force arm is 1:

1.

2. The acceptance test device for the return force connecting rod actuator according to claim 1, characterized in that: The loading cylinder fixing seat comprises: A semi-enclosed structure, wherein a vertical plate with holes is provided inside the semi-enclosed structure, and the vertical plate with holes is connected to one end of the loading cylinder.

3. The acceptance test device for the return force connecting rod actuator according to claim 2, characterized in that: The testing device also includes: The pulling pressure sensor is arranged between the third pin shaft and the other end of the loading cylinder.

4. The acceptance test device for the return force connecting rod actuator according to claim 1, characterized in that: The loading cylinder provides the loading force to the return force connecting rod actuator through servo control.

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