A test bench and test apparatus

Abstract

This utility model discloses a test bench, comprising: a mounting frame; a sliding member slidably connected to the mounting frame, the sliding member being capable of reciprocating relative to the mounting frame along a first direction, the sliding member being used to connect to a first end of a wire harness; a first driving mechanism connected to the sliding member, used to drive the sliding member to slide along the first direction; a rotating member rotatably connected to the mounting frame, the rotating member being capable of reciprocating relative to the mounting frame around a rotation axis extending along the first direction, the rotating member being used to connect to a second end of the wire harness; and a second driving mechanism connected to the rotating member, the second driving mechanism being a crank-rocker mechanism, used to drive the rotating member to rotate around the rotation axis. This utility model allows the vertical movement and horizontal sway durability tests of wheel speed sensors to be performed simultaneously on a single test bench, reducing the number of test benches required. Simultaneously, it can completely simulate the actual operating conditions of an on-vehicle, ensuring the accuracy of the test data. This utility model also provides a testing device.

Description

Technical Field

[0001] This utility model relates to the automotive field, and in particular to a test bench and test device. Background Technology

[0002] Wheel speed sensors are a key electronic sensor in automobiles, typically installed near the wheels, primarily used to monitor the wheel's rotational speed in real time. During actual driving, vehicles experience both bumps and turns; therefore, wheel speed sensors, when installed in a vehicle, exhibit both vertical and horizontal movement.

[0003] In the existing technology, the durability test of wheel speed sensors is carried out by separating the up-and-down movement and the left-and-right swing through different test benches. This not only leads to excessively long test times, but also fails to fully simulate the actual operation of the vehicle, thus affecting the accuracy of the test data. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem that current durability tests for wheel speed sensors require multiple test benches, resulting in long testing times and an inability to fully simulate the actual operating conditions of a vehicle. This invention provides a test bench design that allows for simultaneous vertical movement and horizontal oscillation durability tests of the wheel speed sensor on a single test bench, reducing the number of test benches and shortening the testing time. Simultaneously, it can fully simulate the actual operating conditions of a vehicle, ensuring the accuracy of the test data.

[0005] To address the aforementioned technical problems, this utility model discloses a test bench for testing wheel speed sensors. The wheel speed sensor includes a wiring harness, and the test bench includes:

[0006] Mounting rack;

[0007] A sliding member is slidably connected to the mounting bracket. The sliding member can reciprocate relative to the mounting bracket in a first direction. The sliding member is used to connect to the first end of the wire harness.

[0008] The first driving mechanism is connected to the slider and is used to drive the slider to slide along the first direction;

[0009] A rotating component is rotatably connected to a mounting bracket. The rotating component is capable of reciprocating relative to the mounting bracket about a rotation axis extending along a first direction. The rotating component is used to connect to the second end of the wire harness.

[0010] The second drive mechanism is connected to the rotating component. The second drive mechanism is a crank-rocker mechanism, which is used to drive the rotating component to rotate around the rotation axis.

[0011] By adopting the above technical solution, the wheel speed sensor wiring harness can simultaneously achieve up-and-down movement along the first direction and reciprocating rotation around the first direction within a test bench, thereby simulating the situation where the wheel speed sensor, after being installed in a vehicle, exhibits both up-and-down movement and left-and-right swaying. This design not only reduces the number of test benches and shortens the test time but also fully simulates the actual operating conditions of an installed vehicle, improving the accuracy of the test data.

[0012] Optionally, the rotating parts and the sliding parts are spaced apart along the second direction, the number of rotating parts is at least two, and each rotating part is spaced apart along the third direction. Any two of the first direction, the second direction and the third direction are perpendicular to each other, and the second driving mechanism can drive each rotating part to rotate simultaneously.

[0013] The sliding member has multiple connection points spaced apart along a third direction. The number of connection points is equal to the number of rotating members and corresponds one-to-one. A single connection point can be connected to the first end of a wire harness, and the rotating member corresponding to the position of the connection point can be connected to the second end of the wire harness.

[0014] Using the above technical solution, the rotating parts and connection points with corresponding positions can fix the two ends of the same wire harness respectively. The design of multiple rotating parts and connection points enables the test bench to fix multiple wire harnesses at the same time, so as to detect multiple wheel speed sensors at the same time, thereby improving the detection efficiency.

[0015] Optionally, the first drive mechanism includes:

[0016] The first disk is rotatably connected to the mounting bracket. The axis of the first disk is parallel to the second direction, and the first disk can rotate around its own axis.

[0017] The first link has its first end hinged to the first disk and its second end hinged to the slider. The hinge point of the first end of the first link is spaced a certain distance from the center point of the first disk.

[0018] The first motor is connected to the first disk and is used to drive the first disk to rotate.

[0019] Using the above technical solution, when the first motor starts, the first motor drives the wire harness connected to the sliding member to move up and down along the first direction through the first disk and the first connecting rod, so as to simulate the up and down movement of the wheel speed sensor under actual vehicle conditions.

[0020] Optionally, the first drive mechanism further includes a first connecting shaft, the first end of which is hinged to the first connecting rod, and the second end of which is connected to the first disk;

[0021] The first disk has a first strip hole extending radially along the first disk, and the first strip hole penetrates the first disk along the thickness direction of the first disk; a first baffle is provided on the side of the first disk away from the first motor, and a first through hole is provided on the first baffle; the minimum distance between the projection of the first through hole on the first disk and the center of the first disk is less than the minimum distance between the first strip hole and the center of the first disk.

[0022] The second end of the first connecting shaft can be inserted into the first strip hole or the first through hole in the second direction; when the second end of the first connecting shaft is inserted into the first strip hole, the first driving mechanism further includes a first locking member, which is used to lock the first connecting shaft inserted into the first strip hole to limit the position of the first connecting shaft in the first strip hole.

[0023] By adopting the above technical solution, the design of the first through hole can increase the test stroke without interfering with the normal operation of the first motor. Furthermore, the synergistic effect of the first through hole and the first strip hole can meet the stroke requirements of the up and down movement of different types of wheel speed sensors, so as to simulate different vehicle installation environments and have higher universality.

[0024] Optionally, the sliding member includes a slider and a first connecting part. The slider is slidably connected to the mounting bracket. The first driving mechanism is connected to the slider. The first connecting part is rotatably disposed on the slider. The rotation axis of the first connecting part is parallel to the third direction. Each connection point is spaced apart on the first connecting part along the third direction.

[0025] By adopting the above technical solution, the test requirements of different types of wheel speed sensors can be adapted by adjusting the inclination of the first connecting part. The structure is simple and the adjustment is convenient.

[0026] Optionally, the second drive mechanism includes:

[0027] The second disk is rotatably connected to the mounting bracket. The axis of the second disk is parallel to the first direction, and the second disk can rotate around its own axis.

[0028] The second link has its first end hinged to the second disk, and the hinge point of the first end of the second link is spaced a certain distance from the center point of the second disk.

[0029] The first connecting plate extends along a third direction and is hinged to the second end of the second connecting rod;

[0030] The number of rockers is equal to the number of rotating parts and corresponds one-to-one. The rockers are arranged in parallel. The first end of each rocker is fixedly connected to the corresponding rotating part, and the second end of each rocker is hinged to the first connecting plate.

[0031] The second motor is connected to the second disk and is used to drive the second disk to rotate.

[0032] By adopting the above technical solution, the circular motion of the second disk is transformed into the reciprocating rotation of each rotating component around the first direction through a crank-rocker mechanism, which is simple to set up. Furthermore, this "one-to-many" structure can achieve synchronized motion of multiple outputs with a single input source, resulting in higher efficiency and lower cost.

[0033] Optionally, the second drive mechanism further includes a second connecting shaft, the first end of which is hinged to the second connecting rod, and the second end of which is connected to the second disk;

[0034] The second disk has a second strip-shaped hole extending radially along the second disk, and the second strip-shaped hole penetrates the second disk along the thickness direction of the second disk; a second baffle is provided on the side of the second disk away from the second motor, and a second through hole is provided on the second baffle; the minimum distance between the projection of the second through hole on the second disk and the center of the second disk is less than the minimum distance between the second strip-shaped hole and the center of the second disk.

[0035] The second end of the second connecting shaft can be inserted into the second strip hole or the second through hole along the first direction; when the second end of the second connecting shaft is inserted into the second strip hole, the second drive mechanism further includes a second locking member, which is used to lock the second connecting shaft inserted into the second strip hole to limit the position of the second connecting shaft in the second strip hole.

[0036] By adopting the above technical solution, the design of the second through hole can broaden the rotation angle range without interfering with the normal operation of the second motor. Furthermore, the synergistic effect of the second through hole and the second strip hole can meet the left and right swing angle requirements of different types of wheel speed sensors to simulate different vehicle installation environments, thus having a wide range of applications.

[0037] Optionally, the mounting bracket includes a frame and an adjusting bracket. The sliding member and the first driving mechanism are both mounted on the frame, and the rotating member and the second driving mechanism are both mounted on the adjusting bracket. The adjusting bracket is connected to the frame, and the connection position between the adjusting bracket and the frame can be adjusted along the second direction to change the distance between the sliding member and the rotating member along the second direction.

[0038] Using the above technical solution, the operator can adjust the connection position of the adjustment frame on the frame along the second direction to change the distance between the rotating part and the sliding part, thereby adapting to wheel speed sensors with wire harnesses of different lengths. It is highly practical and adaptable.

[0039] Optionally, the frame is a cuboid and the adjustment frame is a rectangular frame, both of which are made of multiple aluminum profiles joined together.

[0040] Using the above technical solution, the aluminum profile overlapping frame and adjustment bracket require no welding and can be quickly assembled using corner brackets. Furthermore, the aluminum profile frame is highly modular and can be expanded as needed.

[0041] The present invention also discloses a test apparatus, including an environmental test chamber and a test bench, wherein the test bench is at least partially disposed inside the environmental test chamber. Attached Figure Description

[0042] Figure 1 This diagram shows a structural schematic of the test bench provided in an embodiment of the present invention;

[0043] Figure 2 This diagram shows the structure of the slider and the first driving mechanism provided in an embodiment of the present invention.

[0044] Figure 3 This diagram shows a structural schematic of the second drive mechanism provided in an embodiment of the present invention;

[0045] Figure 4 This diagram shows a partial structural schematic of the testing device provided in an embodiment of the present invention;

[0046] Figure 5 This diagram shows a partial structural schematic of the testing device provided in an embodiment of the present invention;

[0047] Figure 6 A top view of the top plate provided in an embodiment of the present invention is shown;

[0048] Figure 7 Show Figure 6 A sectional view along the AA direction.

[0049] Figure label:

[0050] 1. Mounting bracket, 11. Frame, 12. Adjusting bracket, 121. First connecting post, 122. Second connecting post, 2. Sliding component, 21. Slider, 211. First sliding plate, 212. Slide block, 213. Fixed base, 22. First connecting part, 221. Fixed surface, 23. Slide rail, 3. First drive mechanism, 31. First disc, 311. First slotted hole, 32. First connecting rod, 33. First output shaft, 34. First connecting shaft, 35. First baffle, 351. First through hole, 36. First locking component, 361. Copper sleeve, 4. Rotating component, 41. Clamping component, 5. Second drive mechanism Structure, 51. Second disc, 511. Second strip hole, 52. Second connecting rod, 53. First connecting plate, 54. Rocker arm, 55. Second motor, 56. Reducer, 57. Second output shaft, 58. Second connecting shaft, 59. Second locking element, 61. Second baffle, 611. Second through hole, 62. Second connecting plate, 7. Environmental testing chamber, 71. Top plate, 711. Third strip hole, 72. Bottom plate, 73. Motor bracket, 74. Bearing seat, 75. Second sliding plate, 76. Third sliding plate, 77. First pressure strip, 78. Second pressure strip, 79. First slide groove, 80. Second slide groove. Detailed Implementation

[0051] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0052] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0054] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0055] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0057] See Figure 1 This utility model provides a test bench that can be used for durability testing of wheel speed sensors with wire harnesses. The test bench includes a mounting frame 1, a sliding member 2, a first drive mechanism 3, a rotating member 4, and a second drive mechanism 5.

[0058] The sliding member 2 is slidably connected to the mounting bracket 1, and can be slidably connected relative to the mounting bracket 1 along a first direction (e.g., ...). Figure 1 The sliding member 2 reciprocates in the X direction (as described above), and is used to connect to the first end of the wire harness. A first driving mechanism 3 is connected to the sliding member 2, and the first driving mechanism 3 can drive the sliding member 2 to slide along the X direction, thereby causing the first end of the wire harness to move along the X direction. In this embodiment, the X direction is the vertical direction.

[0059] Rotating component 4 is rotatably connected to mounting bracket 1 and can reciprocate relative to mounting bracket 1 around its rotation axis, which extends in the X direction. Rotating component 4 is used to connect to the second end of the wire harness. Second drive mechanism 5 is connected to rotating component 4. Second drive mechanism 5 is a crank-rocker mechanism. Second drive mechanism 5 can drive rotating component 4 to rotate around its rotation axis, thereby driving the second end of the wire harness to rotate.

[0060] Compared to existing technologies that use different test benches for separate vertical movement and horizontal oscillation tests, the test bench provided by this invention allows the wheel speed sensor wiring harness to simultaneously achieve vertical movement along a first direction and reciprocating rotation around that first direction within a single test bench. This simulates the situation where the wheel speed sensor exhibits both vertical movement and horizontal oscillation after actual vehicle installation. This design not only reduces the number of test benches and shortens the testing time but also fully simulates the actual operating conditions of an installed vehicle, improving the accuracy of the test data.

[0061] Further, see Figure 1 The mounting bracket 1 includes a frame 11 and an adjusting bracket 12. The sliding member 2 and the first drive mechanism 3 are both mounted on the frame 11, while the rotating member 4 and the second drive mechanism 5 are both mounted on the adjusting bracket 12. The rotating member 4 and the sliding member 2 are aligned along a second direction (e.g., ...). Figure 1 The Y-direction (as shown in the diagram) is spaced apart, and the Y-direction is perpendicular to the X-direction. The adjustment frame 12 is slidably connected to the frame 11, and the connection position between the adjustment frame 12 and the frame 11 can be adjusted along the Y-direction to change the distance between the sliding member 2 and the rotating member 4 along the Y-direction. In one embodiment of this utility model, the frame 11 is exemplarily a cuboid frame, and the adjustment frame 12 is a rectangular frame. Both the frame 11 and the adjustment frame 12 are made of multiple aluminum profiles joined together, and the frame 11 and the adjustment frame 12 are connected by aluminum profile corner pieces, which allows the operator to easily adjust the connection position of the adjustment frame 12 on the frame 11 along the Y-direction to change the distance between the rotating member 4 and the sliding member 2, thereby adapting to wheel speed sensors with wire harnesses of different lengths, making it highly practical and adaptable.

[0062] The adjusting frame 12 includes first connecting posts 121 spaced apart along the X direction and connecting posts 121 spaced apart along the third direction (e.g., ...). Figure 1 The second connecting posts 122 are spaced apart in the Z direction (as shown in the diagram), with the Z direction perpendicular to both the X and Y directions. The first connecting posts 121 extend along the Z direction, and the second connecting posts 122 extend along the X direction. Adjacent first connecting posts 121 and second connecting posts 122 are fixedly connected. The rotating member 4 is a rod extending along the X direction, with both ends of each rotating member 4 rotatably connected to two first connecting posts 121. The rotating member 4 is equipped with a clamping member 41, which is used to clamp and fix the second end of the wire harness.

[0063] Further, see Figure 1The rotating parts 4 are at least two in number, and are spaced apart along the Z-direction. The second drive mechanism 5 can drive all rotating parts 4 to rotate simultaneously. The sliding part 2 has multiple connection points spaced apart along the Z-direction, the number of which is equal to and corresponds one-to-one with the number of rotating parts 4. A single connection point can be connected to the first end of a wire harness, and the rotating part 4 corresponding to that connection point can be connected to the second end of the wire harness. For example, both the rotating parts 4 and the sliding part 2 have four connection points. The corresponding rotating parts 4 and connection points can respectively fix both ends of the same wire harness. Therefore, the test bench provided in this embodiment can simultaneously fix four wire harnesses and simultaneously detect four wheel speed sensors, thereby improving detection efficiency.

[0064] Further, see Figure 1 and Figure 2 The first drive mechanism 3 includes a first disk 31, a first connecting rod 32, and a first motor (not shown in the figure). The first disk 31, the first connecting rod 32, and the slider 2 together constitute a crank-slider mechanism. The first disk 31 is rotatably connected to the mounting bracket 1, and its axis is parallel to the Y direction, and it can rotate around its own axis. The first end of the first connecting rod 32 is hinged to the first disk 31, and the second end of the first connecting rod 32 is hinged to the slider 2. The hinge point of the first end of the first connecting rod 32 is spaced a certain distance from the center point of the first disk 31. The first motor is connected to the first disk 31 and can drive the first disk 31 to rotate. The first motor can drive the first disk 31 to rotate around its own axis. One end of the first connecting rod 32 is connected to the first disk 31, and the other end is connected to the slider 2. When the first motor starts, the first motor drives the wiring harness connected to the slider 2 to move up and down in the X direction through the first disk 31 and the first connecting rod 32 to simulate the up and down movement of the wheel speed sensor under actual vehicle conditions.

[0065] For example, see Figure 1 The first drive mechanism 3 also includes a first output shaft 33, and the first motor is connected to the center point of the first disk 31 through the first output shaft 33.

[0066] Specifically, see Figure 1 The first drive mechanism 3 also includes a first connecting shaft 34, the first end of which is hinged to the first connecting rod 32, and the second end of which is connected to the first disk 31.

[0067] See Figure 2The first disk 31 has a radially extending first strip-shaped hole 311 that penetrates the first disk 31 along its thickness direction. A first baffle 35 is provided on the side of the first disk 31 facing away from the first motor, and a first through hole 351 is provided on the first baffle 35. The minimum distance between the projection of the first through hole 351 onto the first disk 31 and the center of the first disk 31 is less than the minimum distance between the first strip-shaped hole 311 and the center of the first disk 31. In practical applications, the operator can choose to insert the second end of the first connecting shaft 34 into the first strip-shaped hole 311 or the first through hole 351 along the Y direction, so that the first connecting shaft 34 is connected to the first disk 31.

[0068] Specifically. See [link / reference]. Figure 1 When the embodiment in which the second end of the first connecting shaft 34 is inserted into the first strip hole 311 is adopted, the first driving mechanism 3 further includes a first locking member 36, which is used to lock the first connecting shaft 34 inserted into the first strip hole 311 to limit the position of the first connecting shaft 34 in the first strip hole 311.

[0069] For example, see Figure 1 The first end of the first connecting rod 32 is hinged to the first end of the first connecting shaft 34 via a bearing. In the embodiment where the second end of the first connecting shaft 34 is inserted into the first slotted hole 311 along the Y direction, a copper sleeve 361 is fitted onto the first connecting shaft 34, with both ends of the copper sleeve 361 abutting against the first connecting rod 32 and the first disc 31, respectively. The second end of the first connecting shaft 34 has an external thread on its circumferential surface. The first locking member 36 is a nut, fitted onto the second end of the first connecting shaft 34 and threadedly connected to the external thread on the second end of the first connecting shaft 34. When the first locking member 36 is tightened, the first locking member 36 and the copper sleeve 361 can clamp the first disc 31, thereby restricting the position of the first connecting shaft 34 within the first slotted hole 311.

[0070] When it is necessary to change the vertical movement distance of the wire harness, this can be done by changing the position of the first end of the first connecting rod 32 on the first disk 31. The position of the first end of the first connecting rod 32 on the first disk 31 can be adjusted by adjusting the position of the first connecting shaft 34 within the first slot 311. Since the first slot 311 extends radially along the first disk 31, when it is necessary to reduce the vertical movement distance of the wire harness in the X direction, the first end of the first connecting shaft 34 can be inserted into the first slot 311 near the center of the first disk 31. When it is necessary to increase the vertical movement length of the wire harness in the X direction, the first end of the first connecting shaft 34 can be inserted into the first slot 311 away from the center of the first disk 31.

[0071] However, the adjustment range of the first slotted hole 311 is limited, with the adjustable vertical travel range only from 50mm to 240mm. Compared to the first slotted hole 311, the first through hole 351 is closer to the center point of the first disc 31. Therefore, when the test travel is less than 50mm, the travel can be adjusted through the first through hole 351. When the first connecting shaft 34 is connected within the first through hole 351, the test travel of the wheel speed sensor's vertical movement can be adjusted to 30mm. The design of the first through hole 351 increases the test travel without interfering with the normal operation of the first motor, and the synergistic effect of the first through hole 351 and the first slotted hole 311 can meet the vertical travel requirements of different types of wheel speed sensors to simulate different vehicle environments, thus offering greater versatility.

[0072] Further, see Figure 1 and Figure 2 The sliding member 2 includes a slider 21 and a first connecting part 22, the first connecting part 22 being an aluminum profile extending along the Z direction. The slider 21 is slidably connected to the mounting bracket 1, and the first driving mechanism 3 is connected to the slider 21. The first connecting part 22 is rotatably mounted on the slider 21, and the rotation axis of the first connecting part 22 is parallel to the Z direction. Each connection point (not shown in the figure) is spaced apart along the Z direction on the first connecting part 22. Specifically, each connection point is provided with a clamping member, which is used to clamp the first end of the wire harness. This embodiment of the invention does not limit the type of clamping member, as long as it can fix the first end of the wire harness. Similarly, this embodiment of the invention does not limit the connection method between the clamping member and the first connecting part 22. The clamping member can be inserted into the profile groove of the first connecting part 22, or it can be threaded.

[0073] For example, see Figure 2It also includes two slide rails 23 spaced apart along the Z direction, and the two slide rails 23 extend along the X direction and are both fixedly connected to the frame 11. The slider 21 includes a first slide plate 211, two slide blocks 212, and two fixed seats 213. The first slide plate 211 extends along the Z direction, and the two slide blocks 212 are respectively disposed at both ends of the side of the first slide plate 211 away from the first connecting part 22, and are slidably connected to their corresponding slide rails 23. Fixed seats 213 are respectively disposed at both ends of the side of the first slide plate 211 away from the slide blocks 212, and the two ends of the first connecting part 22 are respectively connected to the two fixed seats 213 by bolts. Each clamping member is disposed on the fixed surface 221 of the first connecting part 22. When it is necessary to adjust the angle between the fixed surface 221 and the horizontal plane, it can be adjusted by the nuts (not shown in the figure) at both ends of the first connecting part 22. The tester can loosen the two nuts and rotate the first connecting part 22. After adjusting to a suitable tilt angle, the nuts at both ends are tightened to fix the first connecting part 22. The design is simple in structure and easy to adjust. It can be adapted to the test requirements of different types of wheel speed sensors by adjusting the tilt of the first connecting part 22.

[0074] Further, see Figure 1 and Figure 3 The second drive mechanism 5 includes a second disk 51, a second connecting rod 52, a first connecting plate 53, rocker arms 54, and a second motor 55. The second disk 51 is rotatably connected to the mounting bracket 1. The axis of the second disk 51 is parallel to the X-direction and can rotate around its own axis. The first end of the second connecting rod 52 is hinged to the second disk 51, and the hinge point of the first end of the second connecting rod 52 is spaced a certain distance from the center point of the second disk 51. The first connecting plate 53 extends along the Z-direction and is hinged to the second end of the second connecting rod 52. The number of rocker arms 54 is equal to the number of rotating parts 4 and corresponds one-to-one. In this embodiment, there are four rocker arms 54, all arranged in parallel. The first end of each rocker arm 54 is fixedly connected to its corresponding rotating part 4, and the second end of each rocker arm 54 is hinged to the first connecting plate 53. The second motor 55 is connected to the second disk 51 and is used to drive the second disk 51 to rotate. For example, the second motor 55 is a servo motor, and the second drive mechanism 5 also includes a reducer 56 and a second output shaft 57. The second motor 55 drives the second disk 51 to rotate through the second output shaft 57, which is connected to the center point of the second disk 51. The combined design of the servo motor and reducer can solve the high torque requirement of the crank-rocker mechanism near the dead center position, improve system efficiency, and maintain high system precision. This design transforms the circular motion of the second disk 51 into the reciprocating rotation of each rotating component 4 around the X direction through the crank-rocker mechanism, and the setup is simple. Furthermore, this "one-to-four" structure can achieve multi-output synchronous motion with a single input source, resulting in higher efficiency and lower cost.

[0075] Specifically, see Figure 3 The second drive mechanism 5 also includes a second connecting shaft 58, the first end of which is hinged to the second connecting rod 52, and the second end of which is connected to the second disk 51.

[0076] The second disk 51 has a radially extending second strip-shaped hole 511 that penetrates the second disk 51 along its thickness direction. A second baffle 61 is located on the side of the second disk 51 opposite to the second motor 55, and a second through hole 611 is provided on the second baffle 61. The minimum distance between the projection of the second through hole 611 onto the second disk 51 and the center of the second disk 51 is less than the minimum distance between the second strip-shaped hole 511 and the center of the second disk 51. In practical applications, the operator can choose to insert the second end of the second connecting shaft 58 into the second strip-shaped hole 511 or the second through hole 611 along the X direction, according to actual needs, to connect the second connecting shaft 58 to the second disk 51.

[0077] Specifically, see Figure 3 When the embodiment in which the second end of the second connecting shaft 58 is inserted into the second strip hole 511 is adopted, the second driving mechanism 5 further includes a second locking member 59, which is used to lock the second connecting shaft 58 inserted into the second strip hole 511 to limit the position of the second connecting shaft 58 in the second strip hole 511.

[0078] For example, see Figure 3 The first end of the second connecting rod 52 and the first end of the second connecting shaft 58 achieve multi-directional angular displacement movement through a spherical bearing. Specifically, the first end of the second connecting rod 52 has a concave spherical surface, and the first end of the second connecting shaft 58 has a convex spherical surface, which swings within the concave spherical surface. In the embodiment where the second end of the second connecting shaft 58 is inserted into the second slotted hole 511 along the X direction, the circumferential surface of the second end of the second connecting shaft 58 has an external thread, and the second locking member 59 consists of two nuts, both of which are sleeved on the second connecting shaft 58 and located on both sides of the second disc 51, respectively. The two nuts are threadedly connected to the external thread of the second connecting shaft 58. When the two nuts are tightened, they can clamp the second disc 51 to limit the position of the second connecting shaft 58 in the second slotted hole 511.

[0079] When it is necessary to change the rotation angle of the wire harness, this can be done by changing the connection position between the first end of the second connecting rod 52 and the second disk 51. The connection position between the first end of the second connecting rod 52 and the second disk 51 can be changed by adjusting the position of the second connecting shaft 58 within the second slot 511. Since the second slot 511 extends radially along the second disk 51, when it is necessary to reduce the rotation angle of the wire harness around the X direction, the second connecting shaft 58 can be connected to a position in the second slot 511 near the center of the second disk 51. When it is necessary to increase the rotation angle of the wire harness around the X direction, the second connecting shaft 58 can be connected to a position in the second slot 511 away from the center of the second disk 51.

[0080] However, the adjustment range of the second strip-shaped hole 511 is limited, with the adjustable rotation angle ranging from 30° to 90°. Compared to the second strip-shaped hole 511, the second through hole 611 is closer to the center point of the second disk 51. Therefore, when the required rotation angle for the test is less than 30°, the rotation angle can be adjusted through the second through hole 611. When the second connecting shaft 58 is connected within the second through hole 611, the rotation angle can be adjusted up to 18°. The design of the second through hole 611 can widen the rotation angle range without interfering with the normal operation of the second motor 55, and the synergistic effect of the second through hole 611 and the second strip-shaped hole 511 can meet the left and right swing angle requirements of different types of wheel speed sensors to simulate different vehicle installation environments, thus having a wide range of applications.

[0081] See Figure 4 This utility model also discloses a test device, including an environmental test chamber 7 and a test bench. The first motor and the second motor 55 of the test bench are both located outside the environmental test chamber 7, while the remaining parts are located inside the environmental test chamber 7. Figure 4 Only the top plate 71 and bottom plate 72 of the environmental test chamber 7 are shown. The test bench is fixedly connected to the bottom plate 72, and the second output shaft 57 is slidably connected to the top plate 71.

[0082] For example, see Figure 4 and Figure 5 The testing apparatus also includes a second connecting plate 62, a motor bracket 73, a bearing seat 74, a second sliding plate 75, a third sliding plate 76, two first pressure bars 77, and two second pressure bars 78. The second connecting plate 62 is connected to the adjusting frame 12, and the second output shaft 57 passes through the second connecting plate 62 and is rotatably connected to it. The motor bracket 73 and the bearing seat 74 are both fixedly connected to the second sliding plate 75, and the motor bracket 73 is used to support the second motor 55.

[0083] See Figure 5 , Figure 6 and Figure 7Two first pressure strips 77 are disposed on the upper surface of the top plate 71 and spaced apart along the X direction. A first sliding groove 79 is formed between the first pressure strips 77 and the top plate 71, extending along the Y direction. A second sliding plate 75 is disposed within the first sliding groove 79 and can reciprocate along the Y direction. Two second pressure strips 78 are disposed on the lower surface of the top plate 71 and spaced apart along the X direction. A second sliding groove 80 is formed between the second pressure strips 78 and the top plate 71, extending along the Y direction. A third sliding plate 76 is disposed within the second sliding groove 80 and can reciprocate along the Y direction. Multiple threaded holes are provided on the top plate 71, the second sliding plate 75, and the third sliding plate 76. The second sliding plate 75 and the third sliding plate 76 are threadedly connected to the top plate 71 by bolts (not shown in the figure) to achieve position fixation.

[0084] A third strip-shaped hole 711 extending along the Y direction is provided on the top plate 71, and the third strip-shaped hole 711 penetrates the top plate 71 along the X direction. The second output shaft 57 passes through the motor bracket 73, bearing seat 74, second slide plate 75, third strip-shaped hole 711 and third slide plate 76 in sequence along the X direction.

[0085] Because there is a linkage between the second output shaft 57 and the rotating parts 4, and each rotating part 4 is rotatably connected to the adjusting frame 12, when the position of the adjusting frame 12 relative to the frame 11 changes, the positions of the second output shaft 57 and the second motor 55 will also change accordingly. Therefore, a sliding mechanism is needed to adapt it. Before adjusting the position of the adjusting frame 12, the bolts between the second sliding plate 75 and the third sliding plate 76 and the top plate 71 must be unscrewed (not shown in the figure). Then, the adjusting frame 12 is moved along the Y direction so that the second connecting plate 62, the second output shaft 57, and the second motor 55 move in the same direction as the adjusting frame 12. After the position adjustment of the adjusting frame 12 is completed, the bolts between the second sliding plate 75 and the third sliding plate 76 and the top plate 71 are tightened to complete the adjustment. By setting the second sliding plate 75 and the third sliding plate 76, the position adjustment of the second output shaft 57 and the second motor 55 relative to the environmental test chamber 7 can be realized, which is convenient and quick. At the same time, the second sliding plate 75 and the third sliding plate 76 are respectively set on the upper and lower surfaces of the top plate 71. This design can maintain the sealing of the environmental test chamber 7 and reduce test errors.

[0086] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A test bench for testing a wheel speed sensor, the wheel speed sensor comprising a wiring harness, characterized in that, The test bench includes: Mounting rack; A sliding member is slidably connected to the mounting bracket, the sliding member is capable of reciprocating relative to the mounting bracket along a first direction, and the sliding member is used to connect to a first end of the wire harness; A first driving mechanism is connected to the slider and is used to drive the slider to slide along the first direction; A rotating component is rotatably connected to the mounting bracket. The rotating component is capable of reciprocating about a rotation axis relative to the mounting bracket. The rotation axis extends along the first direction. The rotating component is used to connect to the second end of the wire harness. The second drive mechanism is connected to the rotating component. The second drive mechanism is a crank-rocker mechanism, which is used to drive the rotating component to rotate around the rotation axis.

2. The test bed of claim 1, wherein, The rotating component and the sliding component are spaced apart along the second direction. The number of the rotating components is at least two. Each of the rotating components is spaced apart along a third direction. Any two of the first direction, the second direction and the third direction are perpendicular to each other. The second driving mechanism can drive each of the rotating components to rotate simultaneously. The sliding member is provided with a plurality of connection points spaced apart along the third direction. The number of connection points is equal to the number of rotating members and corresponds one-to-one. A single connection point can be connected to the first end of a wire harness, and the rotating member corresponding to the position of the connection point can be connected to the second end of the wire harness.

3. The test stand of claim 2, wherein, The first driving mechanism includes: The first disk is rotatably connected to the mounting bracket, the axis of the first disk is parallel to the second direction, and the first disk is capable of rotating around its own axis; The first link has a first end hinged to the first disk and a second end hinged to the sliding member. The hinge point of the first end of the first link is spaced a certain distance from the center point of the first disk. A first motor is connected to the first disk, and the first motor is used to drive the first disk to rotate.

4. The test stand of claim 3, wherein The first drive mechanism further includes a first connecting shaft, the first end of which is hinged to the first connecting rod, and the second end of which is connected to the first disk; The first disk has a first strip-shaped hole extending radially along the first disk, and the first strip-shaped hole penetrates the first disk along the thickness direction of the first disk; a first baffle is provided on the side of the first disk away from the first motor, and a first through hole is provided on the first baffle; the minimum distance between the projection of the first through hole on the first disk and the center of the first disk is less than the minimum distance between the first strip-shaped hole and the center of the first disk. The second end of the first connecting shaft can be inserted into the first strip hole or the first through hole along the second direction; when the second end of the first connecting shaft is inserted into the first strip hole, the first driving mechanism further includes a first locking member, which is used to lock the first connecting shaft inserted into the first strip hole to limit the position of the first connecting shaft in the first strip hole.

5. The test stand of claim 2 wherein, The sliding member includes a slider and a first connecting part. The slider is slidably connected to the mounting bracket. The first driving mechanism is connected to the slider. The first connecting part is rotatably disposed on the slider. The rotation axis of the first connecting part is parallel to the third direction. Each of the connecting points is spaced apart on the first connecting part along the third direction.

6. The test stand of claim 2 wherein, The second drive mechanism includes: The second disk is rotatably connected to the mounting bracket, the axis of the second disk is parallel to the first direction, and the second disk is capable of rotating around its own axis; The second link has its first end hinged to the second disk, and the hinge point of the first end of the second link is spaced a certain distance from the center point of the second disk. A first connecting plate extends along the third direction, and the first connecting plate is hinged to the second end of the second connecting rod; The number of rockers is equal to the number of rotating parts and corresponds one-to-one. The rockers are arranged in parallel. The first end of each rocker is fixedly connected to the corresponding rotating part. The second end of each rocker is hinged to the first connecting plate. The second motor is connected to the second disk and is used to drive the second disk to rotate.

7. The test bed of claim 6, wherein, The second drive mechanism further includes a second connecting shaft, the first end of which is hinged to the second connecting rod, and the second end of which is connected to the second disk; The second disk has a second strip-shaped hole extending radially along the second disk, and the second strip-shaped hole penetrates the second disk along the thickness direction of the second disk; a second baffle is provided on the side of the second disk away from the second motor, and a second through hole is provided on the second baffle; the minimum distance between the projection of the second through hole on the second disk and the center of the second disk is less than the minimum distance between the second strip-shaped hole and the center of the second disk; The second end of the second connecting shaft can be inserted into the second strip hole or the second through hole along the first direction; when the second end of the second connecting shaft is inserted into the second strip hole, the second driving mechanism further includes a second locking member, which is used to lock the second connecting shaft inserted into the second strip hole to limit the position of the second connecting shaft in the second strip hole.

8. The test stand of claim 2 wherein, The mounting bracket includes a frame and an adjustment bracket. The sliding member and the first driving mechanism are both disposed on the frame, and the rotating member and the second driving mechanism are both disposed on the adjustment bracket. The adjustment bracket is connected to the frame, and the connection position between the adjustment bracket and the frame can be adjusted along the second direction to change the distance between the sliding member and the rotating member along the second direction.

9. The test bed of claim 8, wherein, The frame is a cuboid, and the adjustment frame is a rectangular frame. Both the frame and the adjustment frame are made of multiple aluminum profiles joined together.

10. A test device, characterized in that The test apparatus includes an environmental test chamber and a test bench according to any one of claims 1 to 9, wherein the test bench is at least partially disposed inside the environmental test chamber.

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