An actuator simulation limit device and method

Abstract

The present invention discloses an actuator simulation limit device and method, which relates to the technical field of automotive exhaust. It includes an actuator, and also includes an actuator test module, a lifting module, a power connection module, and a test system; the actuator test module is fixed on the lifting module; the actuator test module includes a limit rod and a limit runner with a limit groove, the limit rod is driven by a test driving device, the limit rod extends into the limit groove and is used to limit the rotation angle of the limit runner, the limit runner is connected to a test connection device through a torque sensor; the test connection device is cooperatively connected with the opening control mechanism of the actuator; the power connection module is cooperatively connected with the main board interface of the actuator. The present invention conducts limit simulation through the limit rod and the limit runner with a limit groove, has a simple structure, and can test whether the opening control function of the actuator is perfect, test the pre-tightening force (switch locking force) of the actuator switch, and simulate the extreme positions of the valve plate opening and closing.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive exhaust, and particularly to an actuator simulation limit device and method. Background Art

[0002] Existing automotive exhaust tuning technologies can not only achieve quietness but also realize the sound wave effect during vehicle driving in specific scenarios. The tuning valve can, through the vehicle control system and in combination with the user's operating conditions, adjust the opening degree of the valve plate in real time to obtain a specific exhaust sound effect. Currently, the existing tuning valves are arranged at the outlet end of the exhaust pipe. The opening angle of the valve plate is limited, and even when opened to the maximum angle, the exhaust gas flow cross-sectional area is still small, resulting in a relatively large low-speed rumbling noise during engine exhaust at low speeds.

[0003] Application No. CN202220209351.3 discloses an electric acoustic valve controller for an automotive exhaust pipe, including a housing, a driving mechanism, a transmission mechanism, an opening degree control mechanism, and a control board; the transmission mechanism includes a worm and a turbine that cooperate with each other for transmission, and the worm is fixedly connected to the driving mechanism; the driving mechanism is used to drive the worm and the turbine to rotate; the opening degree control mechanism is arranged outside the housing, and this opening degree control mechanism is fixedly connected to the turbine; the opening degree control mechanism is fixedly connected to the exhaust pipe valve plate and controls the opening and closing angle of the exhaust pipe valve plate; the control board is electrically connected to the driving mechanism. The worm and turbine structure can improve the transmission stability, save space at the same time, ensure a compact structure, meet the tuning requirements, and ensure the tuning performance under a small space structure.

[0004] However, during the process of the tuning valve actuator controlling the opening and closing of the valve, it is necessary to find the limit positions of the valve opening and closing to ensure that the opening and closing angle of the exhaust pipe valve plate is in a suitable position. At the same time, since the exhaust pipe valve plate is a consumable with a very high usage frequency, it is necessary to perform a rotation function test on the actuator to ensure that the actuator has a high service life and avoid replacement at too high a frequency.

[0005] The Chinese patent with the application number CN201910694198.0 provides a comprehensive test device for a rotary valve electric actuator, which includes a base, a first cylinder, a second cylinder, an encoder, a movable friction disc, a fixed friction disc, a torque sensor and a coupling. An installation cavity is provided on the base, and an installation station for installing the actuator is provided at the top of the base. A main shaft is provided on the movable friction disc. The torque sensor and the main shaft are connected to an external actuator through the coupling, and the encoder is installed on the movable friction disc. The first cylinder and the second cylinder alternately output to generate a changing pressure, so that the fixed friction disc generates a changing frictional force on the movable friction disc, so that the actuator is subjected to different torques. During the test, the torque sensor tests the change of the actuator torque, and the encoder tests the change of the actuator rotation angle. The tested values are compared with the standards to test whether the actuator is qualified.

[0006] However, this comprehensive test device does not perform position simulation for the limit position of the actuator, nor does it involve the rotation function test of the actuator. Therefore, it is necessary to provide an actuator simulation limit device and method, which can test whether the opening control function of the actuator is perfect, the switch pre-tightening force (switch locking force) of the actuator, and simulate the extreme positions of the valve disc opening and closing. Summary of the Invention

[0007] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an actuator simulation limit device and method.

[0008] The technical solution adopted by the present invention is as follows:

[0009] An actuator simulation limit device includes an actuator, and also includes an actuator test module, a lifting module, a power connection module and a test system;

[0010] The actuator test module is fixed on the lifting module and moves up and down under the drive of the lifting module;

[0011] The actuator test module includes a limit rod and a limit runner with a limit groove. The limit rod is driven by a test driving device. The limit rod extends into the limit groove and is used to limit the rotation angle of the limit runner. The limit runner is connected to a test connection device through a torque sensor;

[0012] The test connection device is cooperatively connected with the opening control mechanism of the actuator;

[0013] The power connection module is cooperatively connected with the main board interface of the actuator.

[0014] Preferably, the limiting runner is arranged on the lifting module through a first fixing seat and a second fixing seat, and a first bearing and a second bearing are respectively arranged between the limiting runner and the first fixing seat and between the limiting runner and the second fixing seat; the limiting runner is fixedly connected to the torque sensor through a first coupling, and the test connection device is fixedly connected to the torque sensor through a second coupling;

[0015] The axes of the limiting runner, the torque sensor and the test connection device coincide.

[0016] Preferably, the limiting runner includes a wheel disc and a rotating shaft, and the rotating shaft is arranged at the center position of the wheel disc;

[0017] The limiting groove is arranged on the wheel disc, and two ends of the rotating shaft are respectively fixedly connected to the first bearing and the second bearing.

[0018] Preferably, a sliding cylinder is fixedly sleeved outside the limiting rod, the sliding cylinder is fixed on a limiting fixing seat and moves along the axis direction of the sliding cylinder, and the sliding cylinder is fixedly connected to the test driving device.

[0019] Preferably, the test driving device is a test cylinder, and a telescopic shaft of the test cylinder is fixedly connected to the sliding cylinder.

[0020] Preferably, the actuator is fixed on the test bench through a plurality of positioning pins, and the center of the opening control mechanism is located in the axis direction of the test connection device.

[0021] Preferably, the power connection module includes a detection interface that is cooperatively connected to the main board interface, the detection interface is fixed on a moving seat, and the moving seat is fixed on a moving plate through a moving device; the test bench is fixed on the moving plate, and the main board interface and the detection interface are located on the same straight line.

[0022] Preferably, a slide rail is fixed on the moving plate, and the moving device includes a pushing cylinder and a slider that is slidably matched with the slide rail;

[0023] The slider is fixedly connected to the moving seat and drives the moving seat to move along the direction of the slide rail under the push of the pushing cylinder.

[0024] Preferably, the lifting module includes a lifting cylinder, a lifting plate and a lifting guide post fixedly connected to a bottom plate, the actuator test module is fixed on the lifting plate, the lifting cylinder is fixedly connected to the lifting plate through an adapter plate, and the lifting plate moves along the axis direction of the lifting guide post under the drive of the lifting cylinder.

[0025] The present invention also provides an actuator simulation limiting method, which uses the actuator simulation limiting device described in any one of the above to perform a valve opening and closing test on the actuator. The test method is as follows:

[0026] Step 1: The limiting runner returns to its initial position;

[0027] Step 2: The lifting module drives the actuator test module to descend, so that the test connection device in the actuator test module is cooperatively connected with the opening control mechanism of the actuator;

[0028] Step 3: The limiting rod in the actuator test module extends out, and the end of the limiting rod stays in the limiting groove of the limiting runner;

[0029] Step 4: The power connection module is cooperatively connected with the main board interface of the actuator and connected to the test system;

[0030] The test system controls the limiting runner to rotate, drives the opening control mechanism to rotate synchronously, and reaches the first limit and the second limit under the interference of the limiting rod, simulating the opening and closing critical points of the opening control mechanism;

[0031] Step 5: The limiting rod in the actuator test module retracts, the limiting runner continues to rotate, and it is tested whether the opening control mechanism rotates normally.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] Through the limiting simulation by the limiting rod and the limiting runner with a limiting groove, the limiting rod in the actuator test module extends out, and the end of the limiting rod stays in the limiting groove of the limiting runner. The test system controls the limiting runner to rotate, drives the opening control mechanism to rotate synchronously, and reaches the first limit and the second limit under the interference of the limiting rod, which can simulate the limiting of the actuator at the critical points when the valve is opened or closed to better simulate the working state in the actual environment; the limiting rod in the actuator test module retracts, the limiting runner continues to rotate, and it is tested whether the opening control mechanism rotates normally, the pre-tightening force of the actuator switch is tested, and the rotational life test is carried out. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of an actuator simulation limiting device provided by the present invention;

[0035] Figure 2 is a schematic structural diagram of an actuator in an actuator simulation limiting device provided by the present invention;

[0036] Figure 3 is a schematic structural diagram of an actuator test module in an actuator simulation limiting device provided by the present invention;

[0037] Figure 4 It is a schematic structural diagram of the positional relationship between the limit rod and the limit runner in the actuator test module of an actuator simulation limit device provided by the present invention;

[0038] Figure 5 It is a schematic structural diagram of the limit runner in an actuator simulation limit device provided by the present invention;

[0039] Figure 6 It is a top view of the power connection module in an actuator simulation limit device provided by the present invention;

[0040] Figure 7 It is a schematic structural diagram of the power connection module in an actuator simulation limit device provided by the present invention;

[0041] Figure 8 It is a schematic structural diagram of the lifting module in an actuator simulation limit device provided by the present invention;

[0042] Reference signs:

[0043] 1 - Actuator; 101 - Opening control mechanism; 102 - Main board interface;

[0044] 2 - Actuator test module; 201 - Limit rod; 202 - Limit runner; 203 - First fixing seat;

[0045] 204 - Second fixing seat; 205 - First coupling; 206 - Torque sensor; 207 - Second coupling;

[0046] 208 - Test connection device; 209 - Slide cylinder; 210 - Limit fixing seat; 211 - Test cylinder;

[0047] 212 - Third fixing seat; 2021 - Wheel disc; 2022 - Rotating shaft;

[0048] 3 - Lifting module; 301 - Bottom plate; 302 - Lifting guide post; 303 - Lifting plate; 304 - Lifting cylinder;

[0049] 305 - Adapter plate;

[0050] 4 - Power connection module; 401 - Detection interface; 402 - Moving seat; 403 - Pushing cylinder; 404 - Slide rail; 405 - Slide block;

[0051] 406 - Test bench; 407 - Moving plate. Detailed implementation manners

[0052] To make the objectives and technical solutions of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention.

[0053] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0054] As Figures 1 - 8 shown, the present invention provides an actuator simulation limit device, which includes an actuator 1, and also includes an actuator test module 2, a lifting module 3, a power connection module 4 and a test system; the actuator test module 2 is fixed on the lifting module 3 and moves up and down under the drive of the lifting module 3; the power connection module 4 is used to connect with the host interface of the actuator 1, and finally is connected to the PC side of the test system through a cable, and the interaction interface and test results are displayed on the display screen of the PC side.

[0055] The actuator test module 2 includes a limit rod 201 and a limit runner 202 with a limit groove. The limit runner 202 is arranged on the lifting plate 303 of the lifting module 3 through a first fixing seat 203 and a second fixing seat 204. First bearings and second bearings are respectively arranged between the limit runner 202 and the first fixing seat 203, and between the limit runner 202 and the second fixing seat 204; the limit runner 202 includes a wheel disc 2021 and a rotating shaft 2022, and the rotating shaft 2022 is arranged at the center position of the wheel disc 2021; therefore, the limit runner 202 can rotate around the axis of the rotating shaft 2022. The limit runner 202 is fixedly connected to the torque sensor 206 through a first coupling 205, and the test connection device 208 is fixedly connected to the torque sensor 206 through a second coupling 207; therefore, while the torque sensor 206 rotates, through the first coupling 205 and the second coupling 207, the upper limit runner 202 is driven to rotate synchronously, and at the same time, the lower test connection device 208 is driven to rotate. The axes of the limit runner 202, the torque sensor 206 and the test connection device 208 coincide, which can ensure the coaxiality of the three during rotation. The torque sensor 206 can test the switch pre-tightening force of the actuator during rotation.

[0056] The limit rod 201 is driven by a test driving device, where the test driving device is a test cylinder 211, and the telescopic shaft of the test cylinder 211 is fixedly connected to the sliding cylinder 209. The sliding cylinder 209 is fixed on the limit fixing seat 210 and moves along the axis direction of the sliding cylinder 209 under the drive of the test cylinder 211. A stepped surface is provided on the sliding cylinder 209 for mechanical limitation of the sliding cylinder 209. The limit rod 201 is fixed at the central position of the sliding cylinder 209 and can move in the direction close to or away from the limit runner 202 under the drive of the test cylinder 211. The limit runner 202 includes a wheel disc 2021 and a rotating shaft 2022, and the rotating shaft 2022 is arranged at the central position of the wheel disc 2021; a limit groove is provided on the wheel disc 2021, and both ends of the rotating shaft 2022 are fixedly connected to the first bearing and the second bearing respectively.

[0057] When the limit rod 201 extends into the limit groove, since the limit runner 202 is blocked by the limit rod 201 during the rotation process, the rotation angle of the limit runner 202 is restricted. The limit runner 202 has two limit positions, that is, the test connection device 208 has two limit positions. The actuator 1 is fixed on the test bench 406 by a plurality of positioning pins, and the center of the opening control mechanism 101 is located on the axis direction of the test connection device 208. Since the test connection device 208 is cooperatively connected with the opening control mechanism 101 of the actuator 1; it can be used to simulate the two limit positions of the rotation of the opening control mechanism 101 of the actuator 1.

[0058] The power connection module 4 is cooperatively connected with the main board interface 102 of the actuator 1. The power connection module 4 includes a detection interface 401 cooperatively connected with the main board interface 102. The detection interface 401 is fixed on the moving seat 402, and the moving seat 402 is fixed on the moving plate 407 through a moving device; the test bench 406 is fixed on the moving plate 407, and the main board interface 102 and the detection interface 401 are located on the same straight line. A slide rail 404 is fixed on the moving plate 407. The moving device includes a pushing cylinder 403 and a slider 405 slidably matched with the slide rail 404; the slider 405 is fixedly connected with the moving seat 402 and drives the moving seat 402 to move along the direction of the slide rail 404 under the push of the pushing cylinder 403. Therefore, when a test needs to be carried out, the pushing cylinder 403 pushes the slider 405 and the moving seat 402 to move along the slide rail 404 until the detection interface 401 is inserted into the main board interface 102, and the test system is communicatively connected with the actuator 1.

[0059] The lifting module 3 includes a lifting cylinder 304, a lifting plate 303, and lifting guide columns 302 fixedly connected to the bottom plate 301. The actuator test module 2 is fixed on the lifting plate 303. The lifting cylinder 304 is fixedly connected to the lifting plate 303 through an adapter plate 305. The lifting plate 303 moves along the axis direction of the lifting guide columns 302 under the drive of the lifting cylinder 304. Therefore, when testing is required, the lifting cylinder 304 pushes the adapter plate 305, the lifting plate 303, and the actuator test module 2 on the lifting plate 303 to descend along the lifting guide columns 302 until the test connection device 208 in the actuator test module 2 is cooperatively connected with the opening control mechanism 101, and then the test can be carried out.

[0060] The present invention also provides an actuator simulation limiting method. Using the above-mentioned actuator simulation limiting device to perform valve opening and closing tests on the actuator 1, the test method is as follows:

[0061] Step 1: The limit runner 202 returns to its initial position;

[0062] Step 2: The lifting module 3 drives the actuator test module 2 to descend, so that the test connection device 208 in the actuator test module 2 is cooperatively connected with the opening control mechanism 101 of the actuator 1;

[0063] Step 3: The limit rod 201 in the actuator test module 2 extends out, and the end of the limit rod 201 stays in the limit groove of the limit runner 202;

[0064] Step 4: The power connection module 4 is cooperatively connected with the main board interface 102 of the actuator 1 and is connected to the test system;

[0065] The test system controls the limit runner 202 to rotate, drives the opening control mechanism 101 to rotate synchronously, reaches the first limit and the second limit under the interference of the limit rod 201, simulates the opening and closing critical points of the opening control mechanism 101, and simultaneously measures the actuator switch pre-tightening force;

[0066] Step 5: The limit rod 201 in the actuator test module 2 retracts, and the limit runner 202 continues to rotate to test whether the opening control mechanism 101 rotates normally.

[0067] The above is only the implementation mode of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An actuator simulation limit device, comprising an actuator, characterized in that: It also includes an actuator test module, a lifting module, a power connection module, and a test system; The actuator test module is fixed on the lifting module and moves up and down under the drive of the lifting module; The actuator test module includes a limit rod and a limit runner with a limit groove. The limit rod is driven by a test driving device. The limit rod extends into the limit groove and is used to limit the rotation angle of the limit runner. The limit runner is connected to a test connection device through a torque sensor; The test connection device is cooperatively connected with the opening control mechanism of the actuator; The power connection module is cooperatively connected with the main board interface of the actuator; Use the described actuator simulation limit device to conduct a valve opening and closing test on the actuator. The test method is as follows: Step 1, the limit runner returns to the initial position; Step 2, the lifting module drives the actuator test module to descend, so that the test connection device in the actuator test module is cooperatively connected with the opening control mechanism of the actuator; Step 3, the limit rod in the actuator test module extends out, and the end of the limit rod stays in the limit groove of the limit runner; Step 4, the power connection module is cooperatively connected with the main board interface of the actuator and is connected to the test system; The test system controls the limit runner to rotate, drives the opening control mechanism to rotate synchronously, and reaches the first limit and the second limit under the interference of the limit rod, simulating the opening and closing critical points of the opening control mechanism; Step 5, the limit rod in the actuator test module retracts, the limit runner continues to rotate, and test whether the opening control mechanism rotates normally.

2. The actuator simulation limit device according to claim 1, characterized in that: The limit runner is arranged on the lifting module through a first fixing seat and a second fixing seat. A first bearing and a second bearing are respectively arranged between the limit runner and the first fixing seat, and between the limit runner and the second fixing seat; the limit runner is fixedly connected to the torque sensor through a first coupling, and the test connection device is fixedly connected to the torque sensor through a second coupling; The axes of the limit runner, the torque sensor, and the test connection device coincide.

3. The actuator simulation limit device according to claim 2, characterized in that: The limit runner includes a wheel disc and a rotating shaft. The rotating shaft is arranged at the center position of the wheel disc; The limit groove is arranged on the wheel disc, and both ends of the rotating shaft are fixedly connected to the first bearing and the second bearing respectively.

4. The actuator simulation limit device according to claim 1, characterized in that: A sliding cylinder is fixedly sleeved outside the limit rod. The sliding cylinder is fixed on a limit fixing seat and moves along the axis direction of the sliding cylinder. The sliding cylinder is fixedly connected to the test driving device.

5. The actuator simulation limit device according to any one of claim 4, characterized in that: The test driving device is a test cylinder, and the telescopic shaft of the test cylinder is fixedly connected to the sliding cylinder.

6. The actuator simulation limit device according to claim 1, characterized in that: The actuator is fixed on the test bench through a plurality of positioning pins, and the center of the opening control mechanism is located on the axis direction of the test connection device.

7. The actuator simulation limit device according to claim 6, characterized in that: The power connection module includes a detection interface cooperatively connected with the main board interface. The detection interface is fixed on a moving seat. The moving seat is fixed on a moving plate through a moving device; the test bench is fixed on the moving plate, and the main board interface and the detection interface are located on the same straight line.

8. The actuator simulation limit device according to claim 7, characterized in that: A slide rail is fixed on the moving plate. The moving device includes a pushing cylinder and a slider that is slidably engaged with the slide rail; The slider is fixedly connected to the moving seat and drives the moving seat to move along the direction of the slide rail under the push of the pushing cylinder.

9. The actuator simulation limit device according to claim 1, characterized in that: The lifting module includes a lifting cylinder, a lifting plate, and lifting guide columns fixedly connected to the bottom plate. The actuator test module is fixed on the lifting plate. The lifting cylinder is fixedly connected to the lifting plate through an adapter plate. The lifting plate moves along the axial direction of the lifting guide columns under the drive of the lifting cylinder.

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