A load loading mechanism for an aircraft valve actuator

Abstract

This utility model belongs to the field of equipment performance testing technology and discloses a load loading mechanism for aircraft valve actuators, mainly to solve the problem that existing load loading mechanisms are not labor-saving enough when applying loads. This utility model adds a movable pulley to a sliding mounting base that can move along the actuation direction of the actuator under test, and installs a fixed pulley and a fixed anchor point on the base plate to cooperate with the movable pulley. The fixed pulley is used to change the direction of force to adapt to using the weight of the weight as the load loading force, while the movable pulley is used to save effort. Based on the characteristics of the movable pulley mechanism, when the load required by the actuator under test is the same, using the movable pulley mechanism to transmit force can reduce the required loading force to a certain extent according to the specific transmission direction and path of the force, thus reducing the required counterweight, thereby reducing the measurement cost of using weights and slowing down the wear rate of components.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment performance detection, and in particular relates to a load loading mechanism for an aircraft valve actuator. Background Art

[0002] An actuator is a device that converts electrical energy into mechanical energy. It is widely used in aviation, industry, agriculture, military, machinery and other fields. The actuator generates a magnetic field by energizing it, which generates suction on ferromagnetic materials, thereby achieving precise control of the speed, direction, displacement and force of the load. As an important component on an aircraft, the aircraft valve actuator needs to be regularly inspected and tested for its own mechanical properties to ensure that it meets the working requirements.

[0003] At present, the detection method of this type of actuator is a linear load loading method, which is specifically manifested in that a heavy object such as a weight is connected to the actuator through a pulley to apply a tensile pressure, and the relevant mechanical performance value of the actuator is obtained by the weight of the added weight. The traditional load loading mechanism based on this method is directly connected to the output end of the actuator through a steel cable with weights hanging on it by a fixed pulley, and applies pulling pressure to the actuator through the gravity of the weights. For example, a linear electromechanical actuator performance test bench disclosed in publication number "CN102519716A" directly applies the gravity of the breeding weights to the measured actuator through the fixed pulley groups at both ends, that is, the numerical ratio of the weight of the weight to the load loading force is 1:1. Such a loading method is obviously more direct and clear when calculating the data results. However, since the load loading amount required for a general actuator is relatively large (80-100kg), if such a load loading device is used, more or heavier weights need to be stacked to achieve the target weight, and the measurement cost of using weights is relatively high; and components such as steel cables and pulleys need to withstand such a large load force at the same time, and they will wear out faster in long-term use. Utility Model Content

[0004] The utility model aims to provide a load loading mechanism for an aircraft valve actuator, aiming to solve the problem that the traditional load loading mechanism in the prior art is not labor-saving enough in applying the load.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A load loading mechanism for an aircraft valve actuator comprises a frame and a test platform arranged above the frame, characterized in that the test platform comprises a horizontally arranged base plate, the base plate is provided with a fixed mounting seat for connecting the actuator to be tested and a sliding mounting seat movable along the actuation direction of the actuator to be tested, a movable pulley parallel to the base plate is installed on the sliding mounting seat; a fixed pulley and a fixed anchor point cooperating with the movable pulley are also provided on the base plate, the fixed pulley is installed perpendicular to the base plate, and the fixed pulley and the fixed anchor point are respectively located on both sides of the moving path of the movable pulley.

[0007] Furthermore, the cable winding point of the fixed pulley is flush with the wheel groove of the movable pulley, and the cable winding direction is consistent with the moving direction of the movable pulley; the height of the fixed anchor point is flush with the wheel groove of the movable pulley, and the cable between the fixed anchor point and the movable pulley is consistent with the moving direction of the movable pulley.

[0008] Furthermore, the fixed pulley and the fixed anchor point are provided in two groups, including a first fixed pulley and a first fixed anchor point for tension testing, and a second fixed pulley and a second fixed anchor point for pressure testing.

[0009] Furthermore, the sliding mounting seat includes a slide rail fixed on the bottom plate and a slide seat mounted on the slide rail, and the slide rail is arranged along the actuation direction of the actuator to be tested.

[0010] Furthermore, the frame includes a horizontally arranged base frame and a support frame vertically installed on the base frame, and the bottom plate is fixedly installed on the support frame.

[0011] Furthermore, the length of the base plate is smaller than the length of the upper surface of the support frame, and the width of the base plate is larger than the width of the upper surface of the support frame; the fixed pulley and the fixed anchor point are respectively installed at the edge positions on both sides of the width direction of the base plate.

[0012] Furthermore, a reinforcing support rib is provided at the connection between the base frame and the support frame, and the reinforcing support rib, the base frame and the support frame are combined to form a triangular support structure.

[0013] Furthermore, a plurality of universal wheels are installed below the base frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model further improves the transmission path of the loading force on the basis of the existing traditional load loading mechanism, which is specifically manifested in that a movable pulley is added to the sliding mounting seat that can move along the actuation direction of the measured actuator, and a fixed pulley and a fixed anchor point used in conjunction with the movable pulley are installed on the bottom plate. When the load is loaded, one end of the steel cable is connected to the fixed anchor point and is wound around the movable pulley and the fixed pulley in sequence, and the other end of the steel cable is hung with a weight, and the gravity of the weight acts on the movable pulley through the fixed pulley and is then transmitted to the measured actuator on the sliding mounting seat, wherein the fixed pulley is used to change the direction of the force to adapt to the gravity of the weight as the load loading force, and the movable pulley is used to save effort. Based on the characteristics of the movable pulley mechanism, when the required load force is the same, when the movable pulley mechanism is used to transmit the force, the required loading force can be reduced to a certain extent according to the specific transmission direction and path of the force, that is, the required weight of the weight can be reduced, thereby reducing the metering cost of using the weight and slowing down the wear rate of the component.

[0016] 2. The utility model sets the cable winding point of the fixed pulley flush with the wheel groove of the movable pulley, the cable winding direction is consistent with the moving direction of the movable pulley, the height of the fixed anchor point is flush with the wheel groove of the movable pulley, and the cable between the fixed anchor point and the movable pulley is consistent with the moving direction of the movable pulley, so that the connection path of the cable between the fixed anchor point, the movable pulley and the fixed pulley presents a "U" shape. At this time, when the load is applied to the actuator to be tested by hanging the weights on the end of the cable, the weight of the required weights only needs to be half of the specified load force of the actuator to be tested. The use of this transmission path can directly reduce the number and weight of the weights by half, thereby maximizing labor saving.

[0017] 3. The utility model has two groups of fixed pulleys and fixed anchor points, including a first fixed pulley and a first fixed anchor point for tension testing, and a second fixed pulley and a second fixed anchor point for pressure testing. The corresponding fixed pulleys and fixed anchor points can be reasonably used to perform tension and pressure tests on the actuator under test, respectively. One machine has multiple uses, the detection function is more complete, and the practicality is stronger.

[0018] 4. The length of the base plate of the utility model is smaller than the length of the upper surface of the support frame, and the width of the base plate is larger than the width of the upper surface of the support frame. The fixed pulley and the fixed anchor point are respectively installed at the edge positions on both sides of the base plate in the width direction, so that the fixed pulley and the fixed anchor point are located within the support range of the support frame in the length direction. When the load is applied, the overall mechanism is not easy to tip over, thereby enhancing its detection stability.

[0019] 5. The utility model is provided with reinforcing support ribs at the connection between the base frame and the support frame. The reinforcing support ribs, the base frame and the support frame are combined to form a triangular support structure, which further enhances the support capacity and stability of the frame.

[0020] 6. The utility model has a plurality of universal wheels installed below the base frame to facilitate the movement of the entire mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the specific structure of the test platform;

[0024] Figure 3 It is a front view of the utility model;

[0025] Figure 4 It is a top view of the utility model;

[0026] Figure 5 This is a schematic diagram of the working structure of the utility model when performing tension testing;

[0027] Figure 6 It is a schematic diagram of the working structure of the utility model when performing pressure detection.

[0028] Among them, 1-frame, 11-base frame, 12-support frame, 13-reinforced support ribs, 14-universal wheels, 2-bottom plate, 3-fixed mounting seat, 4-sliding mounting seat, 41-slide rail, 42-slide seat, 5-movable pulley, 6-fixed pulley, 61-first fixed pulley, 62-second fixed pulley, 7-fixed anchor point, 71-first fixed anchor point, 72-second fixed anchor point. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1

[0031] like Figures 1 to 6The load loading mechanism for an aircraft valve actuator shown in the figure comprises a frame 1 and a test platform arranged above the frame 1, wherein the frame 1 is used to support the entire test platform and provide sufficient height space for the up and down movement of the weight when the load is applied by the weight; the test platform comprises a horizontally arranged base plate 2, on which is provided a fixed mounting seat 3 for connecting the actuator to be tested and a sliding mounting seat 4 which can move along the actuation direction of the actuator to be tested, and both the fixed mounting seat 3 and the sliding mounting seat 4 are provided with hinge grooves, and when conducting a test, one end of the main body of the actuator to be tested is installed in the hinge groove of the fixed mounting seat 3, and one end of the actuating shaft of the actuator to be tested is installed in the hinge groove of the sliding mounting seat 4; a movable pulley 5 parallel to the base plate 2 is installed on the sliding mounting seat 4, and a fixed pulley 6 and a fixed anchor point which cooperate with the movable pulley 5 are also provided on the base plate 2. 7. The fixed pulley 6 is installed perpendicular to the base plate 2, and the fixed pulley 6 and the fixed anchor point 7 are respectively located on both sides of the moving path of the movable pulley 5. When loading the load, one end of the steel cable is connected to the fixed anchor point 7 and is wound around the movable pulley 5 and the fixed pulley 6 in sequence. The other end of the steel cable is hung with a weight, and the gravity of the weight acts on the movable pulley 5 through the fixed pulley 6 and is then transmitted to the measured actuator on the sliding mounting seat 4. Among them, the fixed pulley 6 is used to change the direction of the force to adapt the gravity of the weight as the load loading force, and the movable pulley 5 is used to save effort. Based on the characteristics of the movable pulley mechanism, when the required load force is the same, when the movable pulley mechanism is used to transmit the force, the required loading force can be reduced to a certain extent according to the specific transmission direction and path of the force, that is, the required counterweight of the weight can be reduced, thereby reducing the metering cost of using the weight and slowing down the wear rate of the component.

[0032] Specifically, the point where the steel cable is wound into the fixed pulley 6 is flush with the wheel groove of the movable pulley 5, and the direction in which the steel cable is wound is consistent with the moving direction of the movable pulley 5; the height of the fixed anchor point 7 is flush with the wheel groove of the movable pulley 5, and the steel cable between the fixed anchor point 7 and the movable pulley 5 is consistent with the moving direction of the movable pulley 5, so that the connection path of the steel cable between the fixed anchor point 7, the movable pulley 5, and the fixed pulley 6 presents a "U" shape. At this time, when a load is applied to the actuator to be tested by hanging weights on the ends of the steel cables, the required weight of the weights only needs to be half of the specified load force of the actuator to be tested. The use of this transmission path can directly reduce the number and weight of the weights by half, thereby maximizing labor saving.

[0033] It is worth noting that the movable pulley 5 and the fixed pulley 6 are composed of three parts: a pulley, a pulley bracket, and a pin shaft, and their specific structures are well known to those skilled in the art. The movable pulley 5 and the fixed pulley 6 are installed at corresponding positions through their respective pulley brackets.

[0034] In the present embodiment, two groups of the fixed pulley 6 and the fixed anchor point 7 are provided, including a first fixed pulley 61 and a first fixed anchor point 71 for tension testing, and a second fixed pulley 62 and a second fixed anchor point 72 for pressure testing. The first fixed pulley 61 and the first fixed anchor point 71 for tension testing are located at the front end position of the movable pulley 5 along its moving direction, and the second fixed pulley 62 and the second fixed anchor point 72 for pressure testing are located at the rear end position of the movable pulley 5 along its moving direction. By reasonably using the corresponding fixed pulley 6 and the fixed anchor point 7, the tension and pressure tests can be performed on the tested actuator respectively, so that one machine can be used for multiple purposes, the detection function is more complete, and the practicability is stronger.

[0035] In this embodiment, the sliding mounting seat 4 includes a sliding rail 41 fixed on the bottom plate 2 and a sliding seat 42 mounted on the sliding rail 41 . The sliding rail 41 is arranged along the actuation direction of the actuator to be tested.

[0036] Example 2

[0037] The frame 1 in this embodiment includes a horizontally arranged base frame 11 and a support frame 12 vertically installed on the base frame 11. The base frame 11 is in a rectangular frame shape, and the support frame 12 is in a gantry shape. The height range of the support frame 12 can provide sufficient height space for the up and down movement of the weight when the load is applied by the weight. The bottom plate 2 is fixedly installed on the support frame 12.

[0038] Specifically, the length of the base plate 2 is smaller than the length of the upper surface of the support frame 12, and the width of the base plate 2 is slightly larger than the width of the upper surface of the support frame 12. The fixed pulley 6 and the fixed anchor point 7 are respectively installed at the edge positions on both sides of the width direction of the base plate 2, so that the fixed pulley 6 and the fixed anchor point 7 are located within the support range of the support frame 12 in the length direction. When a load is applied, the overall mechanism is not easy to tip over, thereby enhancing its detection stability.

[0039] In this embodiment, a reinforcing support rib 13 is provided at the connection between the base frame 11 and the support frame 12. The reinforcing support rib 13, the base frame 11 and the support frame 12 are combined to form a triangular support structure, further enhancing the supporting capacity and stability of the frame 1; four universal wheels 14 are installed at the four corners corresponding to the lower end of the base frame 11 to facilitate the movement of the entire mechanism.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A load loading mechanism for an aircraft valve actuator, comprising a frame (1) and a test platform arranged above the frame (1), characterized in that: The test platform comprises a horizontally arranged bottom plate (2), the bottom plate (2) being provided with a fixed mounting seat (3) for connecting the actuator to be tested and a sliding mounting seat (4) movable along the actuation direction of the actuator to be tested, the sliding mounting seat (4) being provided with a movable pulley (5) parallel to the bottom plate (2); the bottom plate (2) is also provided with a fixed pulley (6) and a fixed anchor point (7) matching with the movable pulley (5), the fixed pulley (6) being installed perpendicular to the bottom plate, and the fixed pulley (6) and the fixed anchor point (7) being respectively located on both sides of the moving path of the movable pulley (5).

2. The load loading mechanism according to claim 1, characterized in that: The steel cable winding point of the fixed pulley (6) is flush with the wheel groove of the movable pulley (5), and the steel cable winding direction is consistent with the moving direction of the movable pulley (5); the height of the fixed anchor point (7) is flush with the wheel groove of the movable pulley (5), and the connecting steel cable between the fixed anchor point (7) and the movable pulley (5) is consistent with the moving direction of the movable pulley (5).

3. The load loading mechanism according to claim 2, characterized in that: The fixed pulley (6) and the fixed anchor point (7) are provided in two groups, including a first fixed pulley (61) and a first fixed anchor point (71) for tension testing, and a second fixed pulley (62) and a second fixed anchor point (72) for pressure testing.

4. The load loading mechanism according to claim 1, characterized in that: The sliding mounting seat (4) comprises a sliding rail (41) fixed on the bottom plate (2) and a sliding seat (42) mounted on the sliding rail (41); the sliding rail (41) is arranged along the actuation direction of the actuator to be tested.

5. The load loading mechanism according to claim 1, characterized in that: The frame (1) comprises a horizontally arranged base frame (11) and a support frame (12) vertically mounted on the base frame (11), and the bottom plate (2) is fixedly mounted on the support frame (12).

6. The load loading mechanism according to claim 5, characterized in that: The length of the bottom plate (2) is smaller than the length of the upper surface of the support frame (12), and the width of the bottom plate (2) is larger than the width of the upper surface of the support frame (12); the fixed pulley (6) and the fixed anchor point (7) are respectively installed at the edge positions on both sides of the bottom plate (2) in the width direction.

7. The load loading mechanism according to claim 5, characterized in that: A reinforcing support rib (13) is provided at the connection between the base frame (11) and the support frame (12); the reinforcing support rib (13), the base frame (11) and the support frame (12) are combined to form a triangular support structure.

8. The load loading mechanism according to claim 5, characterized in that: A plurality of universal wheels (14) are installed below the base frame (11).

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