A new flow matching test device

Abstract

The utility model provides a novel flow distribution and wear testing device, include: linear force motor (1), valve core (2), through rod (4), reflector disc (5), laser displacement sensor (8), through rod (4) is connected with linear force motor (1), is driven by linear force motor (1) and does linear motion, valve core (2) is set up on through rod (4), and through rod (4) end is provided with reflector disc (5), laser displacement sensor (8) is set up to reflector disc (5) and is consistent with reflector disc (5) height, is used for emitting laser to reflector disc (5), and obtains the displacement of valve core (2) according to the laser signal of reflection. Can improve the repeatability, stability, accuracy of hydraulic element performance detection, improve the detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical structure technology, specifically relating to a novel flow rate grinding test device. Background Technology

[0002] The flight control servo actuation system receives flight control commands, directly controls the movement of the aircraft's control surfaces, alters aerodynamic characteristics, and achieves control over flight attitude and trajectory. It is one of the key systems affecting flight safety and performance. Hydraulic components are the core components of the flight control servo actuation system, and the performance of these components plays a crucial role in the high-quality development of the servo actuators and the entire flight control servo actuation system.

[0003] The flow rate and wear test device is a tooling device used to test the performance of hydraulic components, directly measuring their performance. Inaccurate test results can lead to incorrect judgments about product performance. Currently used flow rate and wear test devices use surface contact between the valve core and the device. This allows for separation of the valve core and the device under hydraulic disturbances, making it impossible to accurately measure valve core displacement. Ultimately, this results in poor accuracy and repeatability of the flow rate and wear test device, failing to meet the performance testing requirements of hydraulic components. Utility Model Content

[0004] This invention provides a novel flow rate and grinding test device, which can improve the repeatability, stability, and accuracy of hydraulic component performance testing, and increase testing efficiency.

[0005] This utility model provides a novel flow rate grinding test device, including: a linear force motor 1, a valve core 2, a through rod 4, a reflector 5, and a laser displacement sensor 8;

[0006] The through rod 4 is connected to the linear force motor 1 and is driven by the linear force motor 1 to make linear motion;

[0007] The valve core 2 is fitted onto the through rod 4, and a reflector 5 is provided at the end of the through rod 4;

[0008] The laser displacement sensor 8 is positioned facing the reflector 5 at the same height as the reflector 5. It is used to emit laser light towards the reflector 5 and obtain the displacement of the valve core 2 based on the reflected laser signal.

[0009] Optionally, the through rod 4 and the valve core 2 are clearance-fitted;

[0010] A limiting protrusion ring is provided on the through rod 4. One end of the valve core 2 abuts against the limiting protrusion ring, and the other end is fastened by the first nut 3 sleeved on the through rod 4.

[0011] Optionally, the through rod 4 is a slender cylinder with external threads machined at both ends;

[0012] The through rod 4 is connected to the linear force motor 1 by a thread and is fastened with a second nut 9;

[0013] The through rod 4 and the reflector 5 are connected by threads.

[0014] Optionally, the reflector 5 is a hollow rotating body with internal threads machined into the hollow.

[0015] Optionally, the new flow rate grinding test device also includes: a support platform 6 and a slider 7;

[0016] The support platform 6 is a square support platform with a U-shaped track. The slider 7 is a U-shaped slider. The slider 7 and the support platform 6 are in a U-shaped fit. The track direction is perpendicular to the axis of the through rod 4.

[0017] The slider 7 and the laser displacement sensor 8 are in surface contact and are fastened with bolts.

[0018] Optionally, the laser displacement sensor 8 is used to output displacement data in analog form.

[0019] This utility model provides a novel flow rate and wear test device. The connection between the valve core and the flow rate and wear test device is designed as a threaded connection, which is a rigid connection. This eliminates external disturbances such as hydraulic forces, and can accurately measure the valve core displacement, ensuring the repeatability, accuracy and stability of multiple tests. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the assembly appearance structure of a novel flow rate grinding test device;

[0022] Figure 2 A schematic diagram of a semi-sectional structure of a novel flow rate grinding test device;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Linear force motor; 2. Valve core; 3. First nut; 4. Through rod; 5. Reflector; 6. Support platform; 7. Slider; 8. Laser displacement sensor; 9. Second nut. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0027] like Figure 1 and Figure 2 As shown, this utility model provides a novel flow rate and grinding test device. The valve core 2 adopts a rigid connection, which improves the repeatability, accuracy and stability of the test.

[0028] For example, the novel flow rate grinding test device includes: a drive component and a displacement acquisition component. Wherein:

[0029] The driving components include: a linear motor 1, a through rod 4, a first nut 3, and a second nut 9;

[0030] The displacement acquisition components include: a laser displacement sensor 8, a reflector 5, a support platform 6, and a slider 7;

[0031] Valve core 2 is mounted on the drive component;

[0032] The driving component drives the valve core 2 to move, and the displacement acquisition component acquires the displacement of the valve core 2.

[0033] The valve core 2 is rigidly connected to the drive component and displacement acquisition component. The valve core 2 and drive component are threaded together and further secured with a nut to eliminate external disturbances such as hydraulic forces, ensuring a rigid connection. The valve core 2 features a quick-release and quick-install design, improving the efficiency of hydraulic component performance testing. After testing, the slide rail of the displacement acquisition component is pushed, providing space for valve core disassembly and assembly, facilitating rapid disassembly and assembly. Data transmission is analog, increasing the number of data points and thus improving performance testing accuracy. Existing data transmission methods use serial ports, with a maximum of 50 data points / second, and the actual number may only be 2 points / second due to limitations of the entire acquisition circuit. Analog transmission provides continuous output, supporting at least 1 mega-points / second, significantly increasing the number of data points. More data points result in more accurate calculations, better reflecting the true performance of the product. Displacement acquisition is achieved using a laser displacement sensor, improving displacement acquisition accuracy and thus enhancing performance testing accuracy. The existing displacement acquisition accuracy is 0.0001mm, and the laser displacement sensor has a displacement acquisition accuracy of 0.00001mm, which is 10 times higher. Product testing performance reflects performance at the 0.001mm level; the higher the displacement acquisition accuracy, the more accurately it reflects the product's testing performance.

[0034] See Figure 1 and Figure 2 This utility model provides a novel flow rate grinding test device, which consists of a linear force motor 1, a valve core 2, a first nut 3, a through rod 4, a reflector 5, a support platform 6, a slider 7, a laser displacement sensor 8, and a second nut 9.

[0035] Linear force motor 1 is a finished component; valve core 2 is one of the hydraulic components to be tested; through rod 4 is a slender cylinder with external threads at both ends; reflector 5 is a hollow rotating body with internal threads; support platform 6 is a square support platform with a U-shaped track; slider 7 is a U-shaped slider; laser displacement sensor 8 is a finished component, purchased externally.

[0036] See Figure 2 The through rod 4 is connected to the linear force motor 1 by a thread and is fastened with a second nut 9; the through rod 4 and the valve core 2 are clearance fit and are fastened with a first nut 3 at the end face; the through rod 4 and the reflector 5 are connected by a thread.

[0037] See Figure 2 The slider 7 and the support platform 6 are in a concave-convex fit, and the slider 7 slides on the support platform 6 in a certain direction; the slider 7 and the laser displacement sensor 8 are in surface contact and are fastened with bolts, which are standard parts.

[0038] See Figure 2 The linear motor 1 is the driving component, which can receive input commands and stably output axial motion.

[0039] See Figure 2 The laser displacement sensor 8 is a valve core displacement acquisition component, which can acquire valve core displacement and output displacement data in analog form.

[0040] The working principle of the novel flow rate and wear testing device provided by this utility model is as follows: A linear force motor 1 receives an input command and drives the through rod 4 to move axially, which in turn drives the valve core 2 and the reflector disk 5 to move axially. The axial movement of the reflector disk 5 causes a change in the distance between the reflector disk 5 and the laser displacement sensor 8. The laser emitted by the laser displacement sensor 8 is reflected back at different distances, and the distance between the reflector disk 5 and the laser displacement sensor 8 can be calculated. This distance can characterize the displacement of the valve core 2. The laser displacement sensor 8 outputs valve core displacement data in analog form for performance testing of hydraulic components.

[0041] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] The above-described embodiments are merely preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present utility model patent. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present utility model, and these modifications or substitutions should be included within the protection scope of the present utility model.

Claims

1. A novel flow rate testing device, characterized in that, include: Linear force motor (1), valve core (2), through rod (4), reflector (5), laser displacement sensor (8); The through rod (4) is connected to the linear force motor (1) and is driven by the linear force motor (1) to make linear motion; The valve core (2) is sleeved on the through rod (4), and a reflector (5) is provided at the end of the through rod (4). The laser displacement sensor (8) is positioned facing the reflector (5) at the same height as the reflector (5) and is used to emit laser towards the reflector (5) and obtain the displacement of the valve core (2) based on the reflected laser signal.

2. The novel flow rate grinding test device according to claim 1, characterized in that, The through rod (4) and the valve core (2) are in clearance fit; A limiting protrusion ring is provided on the through rod (4). One end of the valve core (2) abuts against the limiting protrusion ring, and the other end is fastened by the first nut (3) sleeved on the through rod (4).

3. The novel flow rate grinding test device according to claim 1, characterized in that, The through rod (4) is a slender cylinder with external threads machined at both ends; The through rod (4) is connected to the linear force motor (1) by a thread and is fastened with a second nut (9); The through rod (4) and the reflector (5) are connected by threads.

4. The novel flow rate grinding test device according to claim 3, characterized in that, The reflector (5) is a hollow rotating body with internal threads.

5. The novel flow rate grinding test device according to claim 3, characterized in that, Also includes: Support platform (6), slider (7); The support platform (6) is a square support platform with a "U" shaped track. The slider (7) is a "T" shaped slider. The slider (7) and the support platform (6) are in concave-convex fit. The track direction is perpendicular to the axis of the through rod (4). The slider (7) and the laser displacement sensor (8) are in surface contact and are fastened with bolts.

6. The novel flow rate grinding test device according to claim 1, characterized in that, The laser displacement sensor (8) is used to output displacement data in analog form.

Images