Torque testing device for automobile actuator

Abstract

The utility model discloses a torque testing device for an automobile actuator. The torque testing device comprises a tested piece fixing device, a loading motor, a tension and pressure sensor, a sensor connecting bracket and a carrying table, the tested piece fixing device is located on the carrying table, a tested piece is fixedly installed on the tested piece fixing device, and an output shaft of the tested piece is connected with the loading motor; sensor connecting supports are fixedly installed on the two sides of the tested piece fixing device respectively, the sensor connecting supports are installed on the corresponding tension and pressure sensors respectively, and the at least two tension and pressure sensors are arranged in the circumferential direction of the axis of the output shaft of the tested piece in a 180-degree rotating mode. The testing device is rapid and automatic, can rapidly and accurately measure torque characteristic data, rotating speed-efficiency data and the like of the automobile actuator, and is high in testing precision and small in noise and vibration error.

Description

Technical Field

[0001] The utility model relates to the field of actuator torque testing, in particular to a vehicle actuator torque testing device. Background Art

[0002] As the automation and intelligence of automobile driving and control become more and more popular, the quality and safety management of automotive electronic products are becoming more and more stringent, and the standards are getting higher and higher.

[0003] Automotive component actuators are mainly used for aerodynamic management, thermal management or optimization of automobiles. They can be installed on assemblies such as the air intake grille, spoiler or cooling water valve of the automobile. The air intake grille can be a built-in grille or an external grille. The actuator mainly refers to a gear train transmission device based on motor control. The micro-motor transmission gear train is decelerated, and then the output gear train is driven to rotate. A certain speed and torque are output as required to adjust the rotation of the air conditioner damper or the opening and closing of the cooling water valve.

[0004] The quality control of automotive actuators, including the output torque range, speed-torque diagram measurement, and speed-efficiency MAP testing, all rely on the measurement of the motor's torque value.

[0005] There are generally two methods for measuring the torque of motors or actuators. One is to use a dynamic torque sensor in series between the test piece and the loading device. This method can only be used for large test pieces. Small test pieces cannot use this method because the dynamic torque sensor is very large and small test pieces cannot be installed with this sensor. The second is to install a tension pressure sensor at the end of a lever arm through a lever arm, and obtain the torque by multiplying the lever arm length by the tension pressure sensor value. However, this measurement method cannot eliminate the measurement error caused by motor vibration or acceleration and deceleration.

[0006] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. Utility Model Content

[0007] In order to solve at least one of the technical problems existing in the prior art, the utility model provides a fast and automated automobile actuator torque test device, which can quickly and accurately measure the torque characteristic data, speed-efficiency data, etc. of the automobile actuator, with high test accuracy and small noise and vibration errors. The specific technical solution is as follows:

[0008] The utility model provides a torque testing device for an automobile actuator, which comprises a test piece fixing device, a loading motor, a tension and pressure sensor, a sensor connecting bracket and a carrier;

[0009] The test piece fixing device is located on the carrier, the test piece is fixedly mounted on the test piece fixing device, and the output shaft of the test piece is connected to the loading motor;

[0010] Sensor connection brackets are fixedly installed on both sides of the test piece fixing device, and each sensor connection bracket is installed on a corresponding tension and pressure sensor. At least two tension and pressure sensors are arranged 180 degrees rotated along the circumference of the output shaft axis of the test piece.

[0011] As a preferred solution of the automobile actuator torque testing device described in the utility model, a sensor support frame is also fixedly arranged on the carrier;

[0012] There are two tension and pressure sensors and two sensor connection brackets, which are respectively fixedly installed on both sides of the fixture of the tested object, and the two sensor connection brackets are arranged to be rotated 180 degrees along the circumference of the axis of the output shaft of the tested object;

[0013] One of the tension and pressure sensors is fixedly mounted on the carrier, and the detection part of the tension and pressure sensor is connected to a sensor connection bracket;

[0014] Another tension and pressure sensor is fixedly mounted on the sensor support frame, and a detection portion of the tension and pressure sensor is connected to another sensor connecting bracket.

[0015] As a preferred solution of the automobile actuator torque testing device described in the utility model, it also includes a slide rail, and the carrier is slidably installed on the slide rail. The test piece on the carrier is configured to be able to move along the slide rail toward the direction close to the loading motor or toward the direction away from the loading motor.

[0016] As a preferred solution of the automobile actuator torque testing device described in the utility model, it also includes a base, and the loading motor and the slide rail are fixedly installed on the base.

[0017] As a preferred solution of the automobile actuator torque testing device described in the utility model, it also includes a coupling, one end of which is fixedly mounted on the loading motor, and the other end of the coupling is fixedly connected to the output shaft of the tested object.

[0018] As a preferred solution of the automobile actuator torque testing device described in the utility model, the sensor support frame is a U-shaped support frame;

[0019] A tension pressure sensor is fixedly mounted on the carrier, and a testing portion of the tension pressure sensor is vertically arranged upward;

[0020] Another tension and pressure sensor is fixedly installed on the sensor support frame, and the testing part of the tension and pressure sensor is arranged vertically downward.

[0021] As a preferred solution of the automobile actuator torque testing device described in the utility model, an avoidance hole is provided on the sensor support frame.

[0022] As a preferred solution of the automobile actuator torque testing device described in the utility model, a receiving hole is provided on the test piece fixing device, and the test piece is fixed in the receiving hole.

[0023] As a preferred solution of the automobile actuator torque testing device described in the utility model, a slider is installed at the bottom of the carrier, and the slider is slidably installed on the slide rail;

[0024] A limiting structure is arranged on the slider, and the limiting structure can limit the slider on the slide rail.

[0025] As a preferred solution of the automobile actuator torque testing device described in the utility model, the coupling is a diaphragm connector; and / or

[0026] The rotating shaft of the loading motor and the output shaft of the tested piece are coaxially arranged.

[0027] Compared with the prior art, the technical solution described in the utility model has at least one or more of the following beneficial effects:

[0028] The patented testing device has low manufacturing cost, ingenious structural design, feasible processing and assembly, and simple and convenient installation.

[0029] This patented test device can accurately measure the torque of micro loading motors and micro automobile actuators with high measurement accuracy.

[0030] This patented test device can offset the measurement error caused by jitter or vibration of the tested object, reduce the overall noise of the electronic acquisition system, and make the measurement results accurate and reliable.

[0031] The locking screw is used to facilitate the quick connection between the rotating shaft of the loading motor and the output shaft of the tested piece.

[0032] The slide rail is set to facilitate the installation of the tested piece and can also match different types of actuators.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1It is a three-dimensional structural schematic diagram of a vehicle actuator torque testing device according to the utility model from one viewing angle;

[0036] Figure 2 It is a three-dimensional structural schematic diagram of the automobile actuator torque testing device described in the utility model from another perspective.

[0037] Among them, 1-test piece fixing device, 2-loading motor, 3-tension pressure sensor, 4-sensor connecting bracket, 5-carrier, 6-sensor support frame, 7-slide rail, 8-base, 9-test piece, 11-accommodating hole, 21-coupling, 51-slider, 52-limiting structure, 61-avoidance hole. DETAILED DESCRIPTION

[0038] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0039] In the description of the present utility model, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "provided with", "equipped with", "connected", "installed with", "set", "opened", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0042] Please refer to Figure 1-2 ,like Figure 1-2 As shown, the utility model provides a vehicle actuator torque test device, which includes a test piece fixing device 1, a loading motor 2, a tension pressure sensor 3, a sensor connecting bracket 4 and a carrier 5;

[0043] The test piece fixture 1 is located on the carrier 5, the test piece 9 is fixedly mounted on the test piece fixture 1, and the output shaft of the test piece 9 is connected to the loading motor 2;

[0044] Sensor connecting brackets 4 are fixedly installed on both sides of the test piece fixing device 1, and each sensor connecting bracket 4 is installed on the corresponding tension and pressure sensor 3. At least two tension and pressure sensors 3 are arranged to be rotated 180° along the circumferential direction of the axis of the output shaft of the test piece 9.

[0045] The loading motor can dynamically apply torque to the test piece.

[0046] The patented test device has low manufacturing cost, ingenious structural design, feasible processing and assembly, and simple and convenient installation. The patented test device can accurately measure the torque of micro loading motors and micro automobile actuators with high measurement accuracy. The patented test device can offset the measurement error caused by jitter or vibration of the tested piece, reduce the overall noise of the electronic acquisition system, and make the measurement results accurate and reliable.

[0047] In the example, the tension and pressure sensor 3 is fixedly installed on the carrier 5, wherein "fixed installation" includes direct fixed installation and indirect fixed installation, both of which are within the protection scope of this patent.

[0048] In the example, a receiving hole 11 is provided on the test piece fixture 1, and the test piece 9 is fixed in the receiving hole 11. In the example, the test piece 9 is reliably mounted on the test piece fixture 1. In the example, the test piece fixture 1 is located on the carrier 5, and there is a certain gap between the test piece fixture 1 and the surface of the carrier 5.

[0049] In a preferred example, a sensor support frame 6 is fixedly disposed on the carrier 5;

[0050] There are two tension and pressure sensors 3 and two sensor connection brackets 4, and the two sensor connection brackets 4 are respectively fixedly installed on both sides of the test piece fixing device 1, and the two sensor connection brackets 4 are arranged 180 degrees rotated in the circumference of the test piece 9;

[0051] Two tension and pressure sensors 3 are arranged 180° rotated in the circumferential direction of the test piece 9, one of the tension and pressure sensors 3 is fixedly mounted on the carrier 5, and the detection part of the tension and pressure sensor 3 is connected to a sensor connecting bracket 4;

[0052] Another tension and pressure sensor 3 is fixedly mounted on the sensor support frame 6 , and a detection portion of the tension and pressure sensor 3 is connected to another sensor connecting bracket 4 .

[0053] Of course, the two tension and pressure sensors 3 can also have other installation forms to meet the requirement that the two tension and pressure sensors 3 are rotated 180° along the circumferential direction of the axis of the output shaft of the test piece 9. Various different installation forms are within the protection scope of this patent.

[0054] Preferably, the sensor support frame 6 is a U-shaped support frame;

[0055] A tension pressure sensor 3 is fixedly mounted on the carrier, and a testing portion of the tension pressure sensor 3 is vertically arranged upward;

[0056] Another tension and pressure sensor 3 is fixedly mounted on the U-shaped sensor support frame 6 , and the testing part of the tension and pressure sensor 3 is arranged vertically downward.

[0057] In the example, the U-shaped sensor support frame 6 includes a bottom, a vertical portion and a top that are integrally connected, the bottom is fixedly mounted on the carrier 5, and the tension and pressure sensor 3 is fixedly mounted on the bottom surface of the top.

[0058] Further preferably, the sensor support frame 6 is provided with an avoidance hole 61 . In the example, the avoidance hole 61 is provided on the vertical portion of the sensor support frame 6 .

[0059] Since the two tension and pressure sensors 3 are arranged 180° rotated with the axis of the output shaft of the test piece 9, when a vertical upward or vertical downward force is applied to the axis of the output shaft of the test piece 9, one of the tension and pressure sensors 3 is allocated half of the applied force, and the other tension and pressure sensor 3 is allocated the other half of the applied force, but the values ​​read by the two tension and pressure sensors 3 are in opposite directions, because one is under tension and the other is under pressure, and the force arms on both sides are the same length, so in absolute value, half of the force is allocated, but the direction of the force is different, and the sum of the two values ​​in the software is equal to 0. Therefore, when the sensor vibrates, the two tension and pressure sensors will be subjected to two opposite forces of equal absolute value, which can be offset by adding them together, so the vibration error during the test of the test piece can be eliminated. Similarly, gravity is also offset due to its opposite direction. However, when the loading motor applies torque to the test piece, the test piece generates torque, and the torque is under tension or pressure for both tension and pressure sensors because the tangential directions along the lever arm are in the same direction. At this time, the sum of the tension or pressure displayed by the two tension and pressure sensors is the torque value detected by the software, and the torque value detected by the software is twice the actual absolute value of the torque. The two tension and pressure sensors amplify the actual absolute value of the torque by 2 times, and the tiny torque signal is amplified, making the torque collected by the acquisition system more accurate. When the software is processing, the detected torque value is divided by 2 to obtain the actual torque value. If the acquisition system itself generates noise or interference signals, the noise is also divided by 2 at this time, so the noise is smaller.

[0060] This detection device detects more accurately, and the specific calculation is as follows:

[0061] The measuring range of the tension and pressure sensor is 0.1Kg (1N), and the length of the force arm formed by the fixture of the tested object on one of the tension and pressure sensors is 5cm;

[0062] According to the calculation formula: Tr = F × L

[0063] Where Tr is torque (N / m), F is force (N), and L is the length of the lever arm (m);

[0064] The full-scale detection torque value of the test device is: Tr = 1N*0.05m = 0.05N / m. If the acquisition system accuracy is 0.1%, the acquisition system can measure a torque change of 0.00005N / m. There is currently no dynamic torque sensor on the market that can measure such a tiny signal, only conventional 50g and 20g tension and pressure sensors.

[0065] In a preferred embodiment, a coupling 21 is further included, one end of the coupling 21 is fixedly mounted on the loading motor 2 , and the other end of the coupling 21 is fixedly connected to the output shaft of the test piece 9 .

[0066] In the example, the rotating shaft of the loading motor 2 and the output shaft of the test piece 9 are coaxially arranged.

[0067] In the example, the coupling 21 is a diaphragm connector, and the coupling 21 is fixedly connected to the rotating shaft of the loading motor 2 and the output shaft of the tested object 9 through locking screws. The locking screws are used to facilitate the quick docking of the rotating shaft of the loading motor and the output shaft of the tested object.

[0068] In a preferred embodiment, a slide rail 7 is further included, and the carrier 5 is slidably mounted on the slide rail 7. The test piece 9 on the carrier 5 is configured to be able to move along the slide rail 7 toward a direction close to the loading motor 2 or toward a direction away from the loading motor 2.

[0069] In the example, the length directions of the rotating shaft of the loading motor 2, the output shaft of the tested object 9 and the slide rail 7 are all consistent. In the example, there are two slide rails 7.

[0070] In a preferred embodiment, a base 8 is further included, and the loading motor 2 and the slide rail 7 are both fixedly mounted on the base 8 .

[0071] In the example, a slider 51 is installed at the bottom of the carrier 5 , and the slider 51 is slidably installed on the slide rail 7 .

[0072] Preferably, a limiting structure 52 is provided on the slider 51, and the limiting structure 52 can limit the slider 51 to a specified position on the slide rail 7. In the example, the limiting structure 52 is a bolt, and a threaded hole matching the bolt is provided on the slider, and the bolt is screwed into the threaded hole. When the bolt is rotated outwards to not interfere with the slide rail, the slider can slide freely on the slide rail; when the tested piece is connected to the loading motor, the bolt is rotated inwards to interfere with the slide rail, and the slider is fixed on the slide rail and cannot move, and thus the tested piece on the carrier 5 cannot move.

[0073] It should be noted that, in the absence of conflict, all features in the above embodiments or embodiments described herein can be freely combined.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "yet another embodiment", "another embodiment", "other embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0075] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A vehicle actuator torque testing device, characterized in that: It comprises a test piece fixing device (1), a loading motor (2), a tension pressure sensor (3), a sensor connecting bracket (4) and a carrier (5); The test piece fixing device (1) is located on the carrier (5), the test piece (9) is fixedly mounted on the test piece fixing device (1), and the output shaft of the test piece (9) is connected to the loading motor (2); Sensor connection brackets (4) are fixedly mounted on both sides of the test piece fixing device (1), and each sensor connection bracket (4) is mounted on a corresponding tension and pressure sensor (3). At least two tension and pressure sensors (3) are arranged to rotate 180 degrees along the circumference of the axis of the output shaft of the test piece (9).

2. The automobile actuator torque testing device according to claim 1, characterized in that: A sensor support frame (6) is also fixedly arranged on the carrier (5); There are two tension and pressure sensors (3) and two sensor connection brackets (4), and the two sensor connection brackets (4) are respectively fixedly installed on both sides of the test piece fixing device (1), and the two sensor connection brackets (4) are arranged to rotate 180 degrees along the circumference of the axis of the output shaft of the test piece (9); One of the tension and pressure sensors (3) is fixedly mounted on the carrier (5), and a detection portion of the tension and pressure sensor (3) is connected to a sensor connection bracket (4); Another tension and pressure sensor (3) is fixedly mounted on a sensor support frame (6), and a detection portion of the tension and pressure sensor (3) is connected to another sensor connection bracket (4).

3. The automobile actuator torque testing device according to claim 1, characterized in that: It also includes a slide rail (7), on which the carrier (5) is slidably mounted, and the test piece (9) on the carrier (5) is configured to be able to move along the slide rail (7) in a direction close to the loading motor (2) or in a direction away from the loading motor (2).

4. The automobile actuator torque testing device according to claim 3, characterized in that: It also includes a base (8), and the loading motor (2) and the slide rail (7) are fixedly mounted on the base (8).

5. The automobile actuator torque testing device according to claim 1, characterized in that: It also includes a coupling (21), one end of which is fixedly mounted on the loading motor (2), and the other end of which is fixedly connected to the output shaft of the tested piece (9).

6. The automobile actuator torque testing device according to claim 2, characterized in that: The sensor support frame (6) is a U-shaped support frame; A tension and pressure sensor (3) is fixedly mounted on the carrier, and a testing portion of the tension and pressure sensor (3) is arranged vertically upward; Another tension and pressure sensor (3) is fixedly mounted on the sensor support frame (6), and the testing part of the tension and pressure sensor (3) is arranged vertically downward.

7. The automobile actuator torque testing device according to claim 6, characterized in that: The sensor support frame (6) is provided with an avoidance hole (61).

8. The automobile actuator torque testing device according to claim 1, characterized in that: The tested piece fixing device (1) is provided with a receiving hole (11), and the tested piece (9) is fixed in the receiving hole (11).

9. The automobile actuator torque testing device according to claim 3, characterized in that: A slider (51) is installed at the bottom of the carrier (5), and the slider (51) is slidably installed on the slide rail (7); A limiting structure (52) is provided on the slide block (51), and the limiting structure can limit the slide block (51) on the slide rail (7).

10. The automobile actuator torque testing device according to claim 5, characterized in that: The coupling (21) is a diaphragm connector; and / or The rotating shaft of the loading motor (2) and the output shaft of the tested object (9) are coaxially arranged.

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