Test bench and test equipment

Abstract

The utility model relates to the technical field of brake system test, specifically disclose a test workbench and test equipment, through setting decoupling subassembly, and will decoupling subassembly set between first mount pad and second mount pad, to load subassembly through decoupling subassembly pushes EHB assembly and exerts pressure to EHB assembly, to load subassembly push EHB assembly, through decoupling subassembly avoids because of load subassembly and EHB assembly direct connection influence actual loading force to accurate control EHB assembly's pedal opening, to meet under different pedal opening different working condition test demand.

Description

Technical Field

[0001] This utility model relates to the field of braking system testing technology, and in particular to a test bench and test equipment. Background Technology

[0002] The EHB assembly uses an electromechanically controlled hydraulic actuator to achieve vehicle braking, offering higher braking accuracy, response speed, and control precision compared to traditional braking systems. Due to the frequent operation of the braking system during vehicle operation, and the complex and highly random nature of its operating conditions, the EHB assembly requires thorough durability testing to ensure its reliability. Traditional testing equipment struggles to precisely control the pedal opening of the EHB assembly, thus failing to meet the need for testing under different operating conditions at varying pedal openings. Utility Model Content

[0003] The purpose of this invention is to provide a test bench and test equipment to precisely control the pedal opening of the EHB assembly, thereby meeting the testing requirements of different working conditions under different pedal openings.

[0004] This utility model provides a testing workbench, comprising:

[0005] The mounting assembly includes a base plate, a first mounting base, and a second mounting base. The first mounting base and the second mounting base are fixedly connected to the base plate along the length of the base plate. The second mounting base is used to mount the EHB assembly.

[0006] A loading component is mounted on the first mounting base;

[0007] A decoupling component is disposed between the first mounting base and the second mounting base, and the loading component pushes the EHB assembly and applies pressure to the EHB assembly through the decoupling component;

[0008] A load assembly is mounted on the base plate and connected to the output terminal of the EHB assembly. The load assembly is used to provide load to the EHB assembly.

[0009] As a preferred technical solution for the test workbench, the loading component includes a drive unit and a push rod. The drive unit is mounted on the first mounting base, and the push rod is connected to the output end of the drive unit. The drive unit is used to push the push rod closer to or away from the second mounting base.

[0010] As a preferred technical solution for the test workbench, the mounting assembly further includes a connecting rod, the two ends of which are fixedly connected to the first mounting base and the second mounting base, respectively. The decoupling assembly includes a slider, a rocker plate, a hinged ball seat, and a contact element. The slider is slidably connected to the connecting rod, the upper end of the rocker plate is rotatably connected to the slider, and the hinged ball seat and the contact element are respectively hinged to both sides of the lower end of the rocker plate. The contact element contacts the push rod, and the hinged ball seat is used to connect to the input end of the EHB assembly via a ball joint.

[0011] As a preferred technical solution for the test workbench, the push rod is threadedly connected to a top block, the top block is provided with a contact head, and the contact element is rolled on the contact head.

[0012] As a preferred technical solution for the test workbench, the contact element is a rolling bearing, and the outer ring of the rolling bearing can roll on the contact head.

[0013] As a preferred technical solution for the test workbench, a third mounting base is also fixedly connected to the base plate. The third mounting base is disposed between the first mounting base and the second mounting base. A linear bearing is provided on the third mounting base, and the push rod is slidably connected to the linear bearing.

[0014] As a preferred technical solution for the test workbench, the loading component further includes a displacement sensor, which is mounted on the base plate. A connecting piece is fixedly connected to the output end of the drive component, and the connecting piece is fixedly connected to the connecting shaft of the displacement sensor. The output end of the drive component drives the connecting shaft of the displacement sensor to extend and retract synchronously through the connecting piece.

[0015] As a preferred technical solution for the test bench, the loading component further includes a pressure sensor, which is disposed between the output end of the drive component and the push rod, and is used to measure the pressure output by the drive component.

[0016] As a preferred technical solution for the test bench, the load assembly includes a load simulator, an oil pipe, and a hydraulic sensor. The load simulator is connected to the output end of the EHB assembly via the oil pipe, and the hydraulic sensor is connected to the flow path connecting the load simulator and the EHB assembly. The hydraulic sensor is used to measure the oil pressure in the oil pipe.

[0017] This utility model provides a testing device, including a frame, an electronic control unit, and a testing workbench of any of the above-mentioned schemes. The frame forms multiple testing stations, and the testing workbench is installed in each of the multiple testing stations. The electronic control unit is communicatively connected to the multiple testing workbenches.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model provides a test workbench. By setting a decoupling component and placing the decoupling component between a first mounting base and a second mounting base, the loading component pushes the EHB assembly and applies pressure to the EHB assembly through the decoupling component. Thus, when the loading component pushes the EHB assembly, the decoupling component avoids the actual loading force being affected by the direct connection between the loading component and the EHB assembly, thereby accurately controlling the pedal opening of the EHB assembly and meeting the testing requirements of different working conditions under different pedal openings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the testing equipment in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the test workbench in an embodiment of this utility model;

[0022] Figure 3 This is an exploded view of the mounting components in an embodiment of this utility model;

[0023] Figure 4 This is an exploded view of the loading component in an embodiment of this utility model;

[0024] Figure 5 This is an exploded view of the decoupling component in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the load component in an embodiment of the present invention.

[0026] In the picture:

[0027] 100. EHB Assembly;

[0028] 10. Frame; 20. Test station; 30. Electrical control unit; 40. Sheet metal packaging;

[0029] 1. Mounting components; 11. Base plate; 12. Support; 13. First mounting base; 131. First reinforcing plate; 14. Second mounting base; 141. Flange; 15. Baffle; 16. Mounting plate; 17. Third mounting base; 171. Second reinforcing plate; 172. Linear bearing; 18. Connecting rod;

[0030] 2. Loading component; 21. Driving component; 211. Pad; 212. Connecting piece; 22. Displacement sensor; 221. Pressure plate; 222. Connecting shaft; 23. Pressure sensor; 231. Base; 24. Push rod; 25. Top block;

[0031] 3. Decoupling assembly; 31. Slider; 32. Connecting plate; 33. Rocker; 331. First pin; 332. Second pin; 34. First rocker arm; 35. Second rocker arm; 36. Support bearing; 37. Rolling bearing; 38. Ball joint seat;

[0032] 4. Load components; 41. Load simulator; 42. Oil pipes; 43. Hydraulic sensors. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] like Figure 1 As shown, this embodiment of the invention provides a testing device for performing durability and other tests on an EHB assembly 100. The testing device includes a frame 10, an electronic control unit 30, a packaged sheet metal 40, and a test bench. The frame 10 has multiple test stations 20, each equipped with a test bench. The EHB assembly 100 is mounted on the test bench and tested. The electronic control unit 30 is communicatively connected to the multiple test benches to acquire changes in input and output parameters before, during, and after the EHB test. The packaged sheet metal 40 is mounted on the outside of the frame 10, providing protection for the internal space of the frame 10.

[0038] Specifically, such as Figures 2-6 As shown, the test bench includes a mounting assembly 1, a loading assembly 2, a decoupling assembly 3, and a load assembly 4. The mounting assembly 1 includes a base plate 11, a first mounting base 13, and a second mounting base 14. The base plate 11 is positioned on the test station 20 and fixedly connected to the frame 10. The first mounting base 13 and the second mounting base 14 are fixedly connected to the base plate 11 along its length. The second mounting base 14 is used to mount the EHB assembly 100, and a flange 141 is mounted on the second mounting base 14, through which the EHB assembly 100 is fixedly connected to the second mounting base 14. The loading assembly 2 is mounted on the first mounting base 13. The decoupling assembly 3 is positioned between the first mounting base 13 and the second mounting base 14. The loading assembly 2 pushes the EHB assembly 100 and applies pressure to it through the decoupling assembly 3. The load assembly 4 is mounted on the base plate 11 and connected to the output end of the EHB assembly 100. The load assembly 4 provides a load to the EHB assembly 100, facilitating the simulation of various operating conditions. By setting up a decoupling component 3 and placing it between the first mounting base 13 and the second mounting base 14, the loading component 2 pushes the EHB assembly 100 and applies pressure to it through the decoupling component 3. Thus, when the loading component 2 pushes the EHB assembly 100, the decoupling component 3 avoids the actual loading force being affected by the direct connection between the loading component 2 and the EHB assembly 100, thereby accurately controlling the pedal opening of the EHB assembly 100 and meeting the testing requirements of different working conditions under different pedal openings.

[0039] Further, please refer to Figures 2-4As shown, the loading component 2 includes a drive element 21 and a push rod 24. The drive element 21 is mounted on the first mounting base 13, and the push rod 24 is located between the first mounting base 13 and the second mounting base 14. The push rod 24 is connected to the output end of the drive element 21, and the push rod 24 and the output end of the drive element 21 are coaxially arranged. The drive element 21 is used to push the push rod 24 closer to or away from the second mounting base 14, thereby driving the push rod 24 to push the EHB assembly 100. In this embodiment, the drive element 21 is preferably an electric cylinder. The electric cylinder is perpendicular to the first mounting base 13, and the end of the electric cylinder is mounted on the first mounting base 13 by bolts. A plurality of first reinforcing plates 131 are also provided between the first mounting base 13 and the base plate 11. The first reinforcing plates 131 are fixedly connected to both the base plate 11 and the first mounting base 13, thereby strengthening the structural strength of the first mounting base 13. A support 12 is also fixedly connected to the base plate 11. The support 12 is spaced apart from the first mounting base 13 and located on the side of the first mounting base 13 away from the second mounting base 14. The support 12 is used to support the electric cylinder. The drive component 21 is set as an electric cylinder. By controlling the extension length of the output end of the electric cylinder, different pedal openings of the EHB assembly 100 are corresponding to the pedal openings of the EHB assembly 100, thereby achieving precise and controllable pedal opening of the EHB assembly 100, thus meeting the testing requirements of different working conditions under different pedal openings.

[0040] Furthermore, such as Figure 2 , Figure 3 and Figure 5 As shown, the mounting assembly 1 also includes connecting rods 18, with both ends of the connecting rods 18 fixedly connected to the first mounting base 13 and the second mounting base 14, respectively. The number of connecting rods 18 is set to four, arranged in parallel and corresponding one-to-one with the four corner positions of the first mounting base 13 and the second mounting base 14. The decoupling assembly 3 includes a slider 31, a rocker plate 33, a hinged ball seat, and a contact element. The slider 31 is slidably connected to the connecting rods 18, the upper end of the rocker plate 33 is rotatably connected to the slider 31, and the lower ends of the rocker plate 33 are hinged to both sides with a hinged ball seat and a contact element, respectively. The contact element contacts the push rod 24, and the hinged ball seat is used for ball-joint connection with the input end of the EHB assembly 100. By hinged ball seats and contact elements connected to the lower ends of rocker plate 33 respectively, the thrust of push rod 24 first acts on rocker plate 33 through contact elements, and then acts on the output end of EHB assembly 100 through hinge ball seats. Thus, the motion between push rod 24 and EHB assembly 100 is decoupled, avoiding errors in the actual loading force of push rod 24 due to mechanical connection and motion angle, thereby achieving precise control of the pedal opening of EHB assembly 100.

[0041] Specifically, in this embodiment, two sliders 31 are provided. Each slider 31 is slidably connected to one of the two connecting rods 18 located above it. The two sliders 31 are fixedly connected by a connecting plate 32 and fasteners. Locking screws are threaded onto each slider 31. When the locking screws are loosened, the slider 31 can slide along the connecting rod 18; when the locking screws are tightened, the slider 31 is fixed to the connecting rod 18. This allows for adjustable installation position of the decoupling component 3, and the use of two sliders 31 improves the positional accuracy of the decoupling component 3. This better meets the testing requirements of different specifications of EHB assemblies 100. A first rocker arm 34 and a second rocker arm 35 are rotatably connected to each slider 31. The first rocker arm 34 is rotatably connected to one of the sliders 31 via a support bearing 36, and the second rocker arm 35 is rotatably connected to the other slider 31 via a support bearing 36. Both the first rocker arm 34 and the second rocker arm 35 extend towards the other. The upper end of the rocker 33 is connected to one of the first rocker 34 and the second rocker 35, and the first rocker 34 and the second rocker 35 are fitted with shaft holes. Thus, the axis of the rocker 33's swing is perpendicular to the axis of the connecting rod 18, and by setting the support bearing 36, the friction force is reduced, the friction loss during the decoupling process is reduced, and the accuracy of the pedal opening is improved.

[0042] Optionally, a top block 25 is threaded onto the push rod 24. The top block 25 is coaxially arranged with the push rod 24, and the top block 25 is provided with a contact head. The contact element is rolled on the contact head. By setting the threaded connection between the top block 25 and the push rod 24, the position of the top block 25 can be adjusted to meet the testing requirements of different specifications of EHB assemblies 100. A locking nut can be threaded onto the top block 25. After the top block 25 and the push rod 24 are adjusted to the correct position, the locking nut is used to lock the top block 25 and the push rod 24, preventing relative rotation between the two during the test and thus avoiding a change in the position of the top block 25. In this embodiment, the contact element is a rolling bearing 37, and the outer ring of the rolling bearing 37 can roll on the contact head. The rolling bearing 37 is hinged to the rocker plate 33 via a first pin 331, and the hinged ball seat is hinged to the rocker plate 33 via a second pin 332. The rolling bearing 37 is preferably a deep groove ball bearing, which reduces friction during transmission and further improves the accuracy of the test results.

[0043] Furthermore, please continue to refer to Figures 2-4As shown, a third mounting base 17 is also fixedly connected to the base plate 11, and the third mounting base 17 is positioned between the first mounting base 13 and the second mounting base 14. The first mounting base 13, the second mounting base 14, and the third mounting base 17 are arranged in parallel. Several second reinforcing plates 171 are also provided between the third mounting base 17 and the base plate 11. The second reinforcing plates 171 are fixedly connected to both the third mounting base 17 and the base plate 11 to enhance the structural strength of the third mounting base 17. A linear bearing 172 is provided on the third mounting base 17. The linear bearing 172 is coaxially arranged with the push rod 24, and the push rod 24 is slidably connected to the linear bearing 172. By setting the third mounting base 17 and the linear bearing 172, sufficient support is provided for the push rod 24, avoiding significant flexural deformation of the push rod 24 that could affect the accuracy of the test results.

[0044] Furthermore, the loading assembly 2 also includes a displacement sensor 22, which is mounted on a base plate 11. The base plate 11 has a baffle 15 and a mounting plate 16. The baffle 15 is used to axially limit the displacement sensor 22. The end of the displacement sensor 22 engages with a corresponding through hole on the first mounting base 13. The body of the displacement sensor 22 is placed on the mounting plate 16 and fixed thereon by a pressure plate 221 and fasteners. A connecting piece 212 and a pad 211 are fixedly connected to the output end of the drive component 21. The connecting piece 212 is fixedly connected to the connecting shaft 222 of the displacement sensor 22. The output end of the drive component 21 drives the connecting shaft 222 of the displacement sensor 22 to extend and retract synchronously via the connecting piece 212, so that the extension and retraction distance of the output end of the drive component 21 can be obtained through the displacement sensor 22. The pad 211 is used to change the position of the connecting piece 212 on the output end of the drive component 21, thereby meeting the installation requirements of different models of displacement sensors 22.

[0045] Furthermore, the loading assembly 2 also includes a pressure sensor 23, which is disposed between the output end of the drive member 21 and the push rod 24. The pressure sensor 23 is used to measure the pressure output by the drive member 21. The pressure sensor 23 is fixedly connected to the base 231 by bolts. The base 231 is coaxially arranged with the output end of the drive member 21 and is threadedly connected to the output end of the drive member 21. The push rod 24 is threadedly connected to the pressure sensor 23. When the drive member 21 drives the EHB assembly 100 through the push rod 24 and the pressure block, the extension distance of the output end of the drive member 21 is obtained by the displacement sensor 22, and the pressure output by the drive member 21 is obtained by the pressure sensor 23.

[0046] Furthermore, the load assembly 4 includes a load simulator 41, an oil pipe 42, and a hydraulic sensor 43. The load simulator 41 is connected to the output of the EHB assembly 100 via the oil pipe 42, and the hydraulic sensor 43 is connected in the connecting flow path between the load simulator 41 and the EHB assembly 100. The hydraulic sensor 43 is used to measure the oil pressure within the oil pipe 42. The load simulator 41 can be a structure already existing in the art, and will not be described in detail here.

[0047] In this embodiment, the test bench decouples the drive unit 21 from the EHB assembly 100, resulting in more precise pedal opening of the EHB assembly 100 and thus more accurate test results. Simultaneously, the test equipment in this embodiment is equipped with multiple test stations 20, each with a test bench, enabling simultaneous testing of multiple EHB assemblies 100 under different operating conditions or for different projects, improving testing efficiency and shortening the verification cycle.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A test workbench, characterized in that, include: Mounting assembly (1), the mounting assembly (1) includes a base plate (11), a first mounting base (13) and a second mounting base (14), the first mounting base (13) and the second mounting base (14) are fixedly connected to the base plate (11) along the length direction of the base plate (11), and the second mounting base (14) is used to mount the EHB assembly (100). Loading component (2), which is mounted on the first mounting base (13); A decoupling component (3) is disposed between the first mounting base (13) and the second mounting base (14), and the loading component (2) pushes the EHB assembly (100) and applies pressure to the EHB assembly (100) through the decoupling component (3); Load component (4) is mounted on the base plate (11) and connected to the output terminal of the EHB assembly (100). The load component (4) is used to provide load to the EHB assembly (100).

2. The test workbench according to claim 1, characterized in that, The loading component (2) includes a drive (21) and a push rod (24). The drive (21) is mounted on the first mounting base (13), and the push rod (24) is connected to the output end of the drive (21). The drive (21) is used to push the push rod (24) closer to or away from the second mounting base (14).

3. The test workbench according to claim 2, characterized in that, The mounting assembly (1) further includes a connecting rod (18), the two ends of which are fixedly connected to the first mounting base (13) and the second mounting base (14) respectively. The decoupling assembly (3) includes a slider (31), a rocker plate (33), a hinge ball seat and a contact. The slider (31) is slidably connected to the connecting rod (18). The upper end of the rocker plate (33) is rotatably connected to the slider (31). The two sides of the lower end of the rocker plate (33) are respectively hinged to the hinge ball seat and the contact. The contact is in contact with the push rod (24). The hinge ball seat is used to be ball-jointed with the input end of the EHB assembly (100).

4. The test workbench according to claim 3, characterized in that, The push rod (24) is threadedly connected to a top block (25), the top block (25) is provided with a contact head, and the contact element is rolled on the contact head.

5. The test workbench according to claim 4, characterized in that, The contact element is a rolling bearing (37), and the outer ring of the rolling bearing (37) is capable of rolling on the contact head.

6. The test workbench according to claim 3, characterized in that, A third mounting base (17) is also fixedly connected to the base plate (11). The third mounting base (17) is located between the first mounting base (13) and the second mounting base (14). A linear bearing (172) is provided on the third mounting base (17). The push rod (24) is slidably connected to the linear bearing (172).

7. The test workbench according to claim 2, characterized in that, The loading component (2) also includes a displacement sensor (22), which is mounted on the base plate (11). The output end of the drive component (21) is fixedly connected to a connecting piece (212), which is fixedly connected to the connecting shaft (222) of the displacement sensor (22). The output end of the drive component (21) drives the connecting shaft (222) of the displacement sensor (22) to extend and retract synchronously through the connecting piece (212).

8. The test workbench according to claim 2, characterized in that, The loading component (2) also includes a pressure sensor (23), which is disposed between the output end of the drive (21) and the push rod (24). The pressure sensor (23) is used to measure the pressure output by the drive (21).

9. The test bench according to any one of claims 1-8, characterized in that, The load assembly (4) includes a load simulator (41), an oil pipe (42), and a hydraulic sensor (43). The load simulator (41) is connected to the output end of the EHB assembly (100) via the oil pipe (42). The hydraulic sensor (43) is connected to the flow path between the load simulator (41) and the EHB assembly (100). The hydraulic sensor (43) is used to measure the oil pressure in the oil pipe (42).

10. A testing device, characterized in that, The device includes a frame (10), an electronic control unit (30), and a test workbench as described in any one of claims 1-9. The frame (10) forms a plurality of test stations (20), and the test workbench is installed in each of the plurality of test stations (20). The electronic control unit (30) is communicatively connected to the plurality of test workbenches.

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