Torque loading device

Abstract

The utility model provides a torque loading device, and the device comprises an input shaft which comprises a first shaft section and a second shaft section which are arranged in the axial direction, and one end, far away from the second shaft section, of the first shaft section is provided with a torque loading part; the torque sensor is connected to the input shaft and used for detecting the input torque of one side of the first shaft section. The support assembly is used for installing the input shaft and is fixedly connected with the second shaft section; and the torque loading assembly is arranged on the bracket assembly and is jointed with the torque loading part, and the torque loading assembly is used for outputting a driving force for rotating around the central axis of the input shaft to the first shaft section. Therefore, the torque loading device can be used for simulating the steering torque applied to the steering wheel by a driver, and the simulation precision is high.

Description

Technical Field

[0001] The present application relates to the technical field of testing equipment, and in particular to a torque loading device. Background Art

[0002] At present, the vehicle's electric power steering system is composed of a torque sensor, a vehicle speed sensor, a deceleration mechanism and a motor ECU (Electronic Control Unit). When testing the motor ECU, the torque sensor and the motor ECU need to be debugged together. The test scope is mainly focused on ensuring that the electric power steering system can perform its designed functions safely, efficiently and accurately, thereby improving the vehicle's handling performance and driving safety.

[0003] In the related art, during the test process, the torque sensor needs to be arranged on the steering gear assembly, there is no corresponding test tooling, and the steering gear assembly needs to be moved as a whole during the test, which affects the test efficiency. Utility Model Content

[0004] In view of this, the present application aims to provide a torque loading device to simulate steering torque.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0006] A torque loading device, the torque loading device comprising: an input shaft, the input shaft comprising a first shaft section and a second shaft section, a torque loading portion being provided at one end of the first shaft section away from the second shaft section; a torque sensor, the torque sensor being connected to the input shaft and used for detecting input torque on one side of the first shaft section; a bracket assembly, the bracket assembly being used for mounting the input shaft and being fixedly connected to the second shaft section; a torque loading assembly, the torque loading assembly being provided on the bracket assembly and engaging with the torque loading portion, and the torque loading assembly being used for outputting a driving force for rotating around the central axis of the input shaft to the first shaft section.

[0007] In some embodiments of the present application, the torque loading assembly includes: an engagement block, which is used to engage with the torque loading portion; and a driving rod, which is connected to the engagement block and is used to drive the engagement block to rotate around the central axis of the input shaft.

[0008] In some embodiments of the present application, the engagement block is provided with a spline hole, the torque loading portion is configured as a spline segment, and the spline segment is plug-fitted with the spline hole.

[0009] In some embodiments of the present application, the coupling block is provided with a driving arm, and the driving rod comprises: a rod body, the rod body extends along a first direction and passes through the driving arm, and the position of the rod body relative to the bracket assembly in the first direction is adjustable; a first driving block and a second driving block, the first driving block and the second driving block are arranged on the rod body, and the first driving block and the second driving block are respectively arranged on both sides of the driving arm in the first direction, and are used to drive the driving arm to swing around the central axis of the input shaft; wherein, the first direction is perpendicular to the central axis of the input shaft.

[0010] In some embodiments of the present application, the bracket assembly is provided with a threaded hole extending along the first direction, and the rod body is provided with a threaded section, and the threaded section is threadedly matched with the threaded hole.

[0011] In some embodiments of the present application, the rod body is provided with a rotating handle, and the rotating handle can drive the rod body to rotate so as to screw the rod body into the threaded hole or screw it out away from the threaded hole.

[0012] In some embodiments of the present application, the first driving block is provided with a first driving spherical surface, and the first driving spherical surface abuts and cooperates with the first side of the driving arm in the first direction; and / or the second driving block is provided with a second driving spherical surface, and the second driving spherical surface abuts and cooperates with the second side of the driving arm in the first direction.

[0013] In some embodiments of the present application, the bracket assembly includes: a base, which is used to install the torque loading assembly; a first support seat, which is arranged on the base, and the first support seat is provided with a support bearing, and the support bearing is used to support the first shaft segment; a second support seat, which is arranged on the base, and the second support seat and the first support seat are spaced apart in the axial direction of the input shaft, and are used to fix the second shaft segment.

[0014] In some embodiments of the present application, the second support seat includes: a support block, which is arranged on the base and formed with a support groove open upward, and the support groove is used to support the second shaft segment; a fixing block, which is formed with a fixing groove open to one side of the support block, and the fixing block can be fixedly connected to the support block and clamp the second shaft segment.

[0015] In some embodiments of the present application, the base is provided with a slide groove extending along a second direction, and at least one of the first support seat and the second support seat is slidably matched with the slide groove; wherein the second direction is parallel to the axial direction of the input shaft.

[0016] Compared with the prior art, the torque loading device described in this application has the following advantages:

[0017] (1) The torque loading device can be used to simulate the steering torque applied by the driver on the steering wheel with high simulation accuracy. The torsional force on the input shaft can be fed back to the motor ECU in the test system through the torque sensor. The motor ECU can control the motor based on the signal of the torque sensor to achieve accurate matching of the steering assist in the test system.

[0018] (2) The torque loading device has good versatility and can be matched with input shafts of various sizes.

[0019] (3) The mounting carrier of each component in the torque loading device is a bracket assembly, which is convenient for carrying the torque loading device. At the same time, the assembly method of the torque loading device is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 This is a schematic structural diagram of a torque loading device according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of driving a joint block according to an embodiment of the present application Figure 1 ;

[0023] Figure 3 A schematic diagram of driving a joint block according to an embodiment of the present application Figure 2 ;

[0024] Figure 4 A schematic diagram of driving a joint block according to an embodiment of the present application Figure 3 ;

[0025] Figure 5 This is a schematic diagram of the structure of an input shaft according to an embodiment of the present application;

[0026] Figure 6 This is a schematic structural diagram of a joining block according to an embodiment of the present application;

[0027] Figure 7 This is a schematic structural diagram of a driving rod according to an embodiment of the present application;

[0028] Figure 8 A top view of a base according to an embodiment of the present application;

[0029] Fig. 9A partial cross-sectional view of a base according to an embodiment of the present application;

[0030] Fig.10 A schematic diagram of a first support base according to an embodiment of the present application;

[0031] Fig.11 This is a schematic diagram of a second support base described in an embodiment of the present application.

[0032] Description of reference numerals:

[0033] Torque loading device 100;

[0034] Input shaft 1; first shaft section 11; spline section 111; second shaft section 12;

[0035] Torque sensor 2;

[0036] Bracket assembly 3; base 31; slide groove 311; threaded hole 312; avoidance groove 313; first support seat 32; second support seat 33; support block 331; first mounting hole 3311; support groove 3312; fixing block 332; second mounting hole 3321; fixing groove 3322; positioning hole 3323; nut 34; threaded positioning member 35;

[0037] Torque loading assembly 4; engagement block 41; drive arm 411; U-shaped groove 412; spline hole 413; drive rod 42; rod body 421; first drive block 422; first drive spherical surface 4221; second drive block 423; second drive spherical surface 4231; threaded section 424; rotating handle 425. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0039] The torque loading device 100 of the embodiment of the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. The torque loading device 100 can be used to simulate steering torque, such as the steering torque applied by the driver on the steering wheel.

[0040] The torque loading device 100 according to the embodiment of the present application includes: an input shaft 1 , a torque sensor 2 , a bracket assembly 3 and a torque loading assembly 4 .

[0041] Reference Figure 5 The input shaft 1 includes a first shaft segment 11 and a second shaft segment 12 arranged in the axial direction. A torque loading portion is provided at one end of the first shaft segment 11 away from the second shaft segment 12. The torque loading portion can cooperate with the torque loading assembly 4 to load torque to the first shaft segment 11.

[0042] Further, the torque sensor 2 is connected to the input shaft 1, and the torque sensor 2 is used to detect the input torque on one side of the first shaft section 11, that is, the torque loading component 4 applies torque to the first shaft section 11. It should be noted that the torque sensor 2 can be electrically connected to the motor ECU, and the motor ECU can be tested based on the electrical signal of the torque sensor 2 to achieve coordination and debugging of the torque sensor 2 and the motor ECU.

[0043] Reference Figure 1 The bracket assembly 3 is a mounting carrier of the input shaft 1, and the input shaft 1 is mounted through the bracket assembly 3, and the bracket assembly 3 can be fixedly connected to the second shaft segment 12 to prevent the input shaft 1 from idling or slipping under the drive of the torque loading assembly 4 and affecting the detection accuracy of the torque sensor 2.

[0044] In the torque loading device 100, the torque loading component 4 is arranged on the bracket component 3, and the torque loading component 4 is engaged with the torque loading part, and the torque loading component 4 is used to output a driving force for rotating around the central axis of the input shaft 1 to the first shaft segment 11, so that a torsional force can be applied to the first shaft segment 11 by driving the torque loading part.

[0045] It should be noted that the vehicle's electric power steering system consists of a torque sensor 2, a vehicle speed sensor, a deceleration mechanism, and a motor ECU. When testing the motor ECU, the torque sensor 2 needs to be debugged in coordination with the motor ECU. The test scope is mainly focused on ensuring that the electric power steering system can safely, efficiently, and accurately perform its designed functions, thereby improving the vehicle's handling performance and driving safety. In related technologies, during the test process, the torque sensor 2 needs to be placed on the steering gear assembly, and there is no corresponding test tooling. In addition, the steering gear assembly needs to be moved as a whole during the test, which affects the test efficiency.

[0046] In the present application, the torque loading device 100 can apply a torsional force to the input shaft 1 through the torque loading component 4, which can simulate the steering wheel torque operated by the driver while driving, and the torque loading device 100 is easy to carry, so it is easy to apply the torque loading device 100 of the present application to the test system. At the same time, the torque loading device 100 is an independent test fixture, and the simulation accuracy of the torque is high.

[0047] Combination Figure 1 and Figure 2 As shown, in some embodiments of the present application, the torque loading device 100 includes: a coupling block 41 and a driving rod 42, the coupling block 41 is used to engage with the torque loading part, the driving rod 42 is connected to the coupling block 41, and the driving rod 42 is used to drive the coupling block 41 to rotate around the central axis of the input shaft 1 to apply a torsional force to the first shaft section 11.

[0048] When the engagement block 41 is engaged with the torque loading portion, a torsional force can be applied to the torque loading portion through the engagement block 41. The driving rod 42 is used to apply a driving force to the engagement block 41, so that the driving force is further applied to the input shaft 1 through the engagement block 41, thereby loading the torsional force on the input shaft 1.

[0049] Combination Figure 5 and Figure 6 As shown, in some embodiments of the present application, the coupling block 41 is provided with a spline hole 413 , and the torque loading portion is constructed as a spline segment 111 , and the spline segment 111 is plug-fitted with the spline hole 413 to achieve coupling of the coupling block 41 with the first shaft segment 11 .

[0050] The spline segment 111 is a part of the first shaft segment 11 , that is, the central axis of the spline segment 111 is colinearly arranged with the central axis of the first shaft segment 11 .

[0051] Reference Figure 5 The spline section 111 is formed at the end of the first shaft section 11, so that the coupling block 41 can be sleeved on the end of the first shaft section 11, which is convenient for coupling the coupling block 41 with the input shaft 1, and the coupling block 41 can be combined with the input shaft 1 through a sleeve assembly method, thereby reducing the assembly difficulty of the torque loading device 100 and ensuring the torque loading effect at the first shaft section 11.

[0052] like Figure 1 As shown, in some embodiments of the present application, the engagement block 41 is provided with a driving arm 411 , and the driving rod 42 includes a rod body 421 , a first driving block 422 , and a second driving block 423 .

[0053] The rod body 421 passes through the driving arm 411, and the rod body 421 extends along the first direction, and the position of the rod body 421 relative to the bracket assembly 3 in the first direction is adjustable. The first driving block 422 and the second driving block 423 are arranged on the rod body 421, and the first driving block 422 and the second driving block 423 are respectively arranged on both sides of the driving arm 411, and the first driving block 422 and the second driving block 423 can be used to drive the driving arm 411 to swing around the central axis of the input shaft 1.

[0054] Combination Figure 1 and Figure 2, the first direction is perpendicular to the central axis of the input shaft 1. It can be understood that the bracket assembly 3 is a mounting carrier of the rod body 421. By adjusting the position of the rod body 421 relative to the bracket assembly 3 in the first direction, the position of the first driving block 422 and the second driving block 423 relative to the bracket assembly 3 in the first direction can be adjusted, so that the first driving block 422 and the second driving block 423 can drive the engagement block 41 to rotate. At the same time, since the input shaft 1 is also mounted on the bracket assembly 3, that is, the position of the input shaft 1 relative to the bracket assembly 3 is fixed, the torsional force can be applied to the input shaft 1 through the engagement block 41 in cooperation with the torque loading portion.

[0055] Reference Figure 2 , Figure 3 and Figure 4 , the first driving block 422 and the second driving block 423 are respectively arranged on both sides of the driving arm 411 in the first direction. The first driving block 422 abuts against the driving arm 411, and is used to drive the driving arm 411 to move toward the second driving block 423; the second driving block 423 abuts against the driving arm 411, and is used to drive the driving arm 411 to move toward the first driving block 422. The driving directions of the first driving block 422 and the second driving block 423 are opposite, so that the first driving block 422 and the second driving block 423 respectively apply driving forces in opposite directions to the driving arm 411, thereby realizing the application of torsional forces in two directions to the driving arm 411.

[0056] Combination Figure 7 and Figure 8 As shown, in some embodiments of the present application, the bracket assembly 3 is provided with a threaded hole 312 extending along the first direction, and the rod body 421 is provided with a threaded section 424, and the threaded section 424 is threadedly matched with the threaded hole 312, so as to adjust the position of the rod body 421 relative to the support assembly in the first direction, and also adjust the position of the first driving block 422 and the second driving block 423 in the first direction, and then the driving arm 411 can be driven to swing by the first driving block 422 and the second driving block 423.

[0057] Combination Figure 2 and Figure 3 When the threaded section 424 is screwed into the threaded hole 312, the rod body 421 can be driven to move downward along the first direction. Under the action of the first driving block 422, the driving arm 411 can be driven to swing downward. Figure 2 and Figure 4 When the threaded section 424 is screwed out from the threaded hole 312, the rod body 421 can be driven to move upward along the first direction, and under the action of the second driving block 423, the driving arm 411 can be driven to swing upward.

[0058] The first driving block 422 and the second driving block 423 may be fixed on the rod body 421 , that is, the first driving block 422 and the second driving block 423 may rotate synchronously with the rod body 421 .

[0059] like Figure 1 and Figure 2 As shown, in some embodiments of the present application, the rod body 421 is provided with a rotating handle 425, and the rotating handle 425 is used to drive the rod body 421 to rotate so as to screw the rod body 421 into the threaded hole 312 or screw it out away from the threaded hole 312.

[0060] Among them, the tester can drive the driving rod 42 by holding the rotating handle 425. The rotating handle 425 can provide the tester with a hand-held operating position, which is convenient for the operator to adjust the moving distance of the driving rod 42 in the first direction, and also to adjust the driving force applied to the input shaft 1.

[0061] It is understandable that the rotating handle 425 can simulate the steering wheel movement. By driving the rotating handle 425 to rotate clockwise or counterclockwise around the central axis of the threaded segment 424, the rotation of the steering wheel can be simulated, thereby improving the simulation effect of the torque loading device 100 on the steering wheel torque.

[0062] like Figure 7 As shown, in some embodiments of the present application, the rotating handle 425 is arranged at the end of the rod body 421, and the connection between the rotating handle 425 and the rod body 421 is located in the middle position of the rod body 421, so that the rod body 421 and the rotating handle 425 are constructed into a "T" shape, so that the operator can hold the parts of the rotating handle 425 located on both sides of the end of the rod body 421 respectively, which is convenient for the operator to rotate the drive rod 42.

[0063] like Figure 7 As shown, in some embodiments of the present application, the first driving block 422 is provided with a first driving spherical surface 4221, which is used to abut and cooperate with the first side of the driving arm 411 in the first direction, so as to prevent the first driving block 422 from getting stuck when cooperating with the driving arm 411; the second driving block 423 is provided with a second driving spherical surface 4231, which is used to abut and cooperate with the second side of the driving arm 411 in the first direction, so as to prevent the second driving block 423 from getting stuck when cooperating with the driving arm 411. Thus, the driving effect of the first driving block 422 and the second driving block 423 on the driving arm 411 is improved.

[0064] It can be understood that in the process of the first driving block 422 and the second driving block 423 driving the driving arm 411 to swing through abutment, the first driving spherical surface 4221 and the second driving spherical surface 4231 are respectively used to abut and cooperate with the two side surfaces of the driving arm 411 in the first direction, so that the driving arm 411 can abut with the spherical surface when it swings to any angle. The setting of the spherical surface can facilitate the rotation of the driving arm 411 at different positions, so that the swinging process of the driving arm 411 is smooth.

[0065] In a further embodiment of the present application, the two side surfaces of the driving arm 411 in the first direction can respectively form arc-shaped mating surfaces, and the two arc-shaped mating surfaces are respectively used to abut and cooperate with the first driving spherical surface 4221 and the second driving spherical surface 4231, so that the swinging process of the driving arm 411 is smooth.

[0066] In some embodiments of the present application, the driving arm 411 is formed with a U-shaped groove 412, and the driving rod 42 can be installed into the U-shaped groove 412 from the open side of the U-shaped groove. The setting of the U-shaped groove facilitates the connection and cooperation between the driving rod 42 and the coupling block 41.

[0067] like Figure 1 As shown, in some embodiments of the present application, the bracket assembly 3 includes: a base 31 , a first support base 32 and a second support base 33 .

[0068] The base 31 is used to install the torque loading assembly 4 . The threaded hole 312 is formed on the base 31 . The driving rod 42 is installed on the base 31 by cooperating with the threaded hole 312 through the threaded section 424 .

[0069] Reference Figure 1 The first support seat 32 and the second support seat 33 are both installed on the base 31, and the first support seat 32 is provided with a support bearing, which is used to support the first shaft segment 11, that is, the first shaft segment 11 is passed through the first support seat 32 and is supported by the support bearing; the second support seat 33 and the first support seat 32 are spaced apart in the axial direction of the input shaft 1, and the second support seat 33 is used to fix the second shaft segment 12, so as to limit the rotation of the input shaft 1 through the second support seat 33, prevent the input shaft 1 from idling, and ensure the loading effect of the torsional force at the input shaft 1.

[0070] The first support seat 32 and the second support seat 33 can support the input shaft 1, so as to support the input shaft 1 above the base 31 and reduce the interference of other factors on the input shaft 1. At the same time, the first support seat 32 and the second support seat 33 are arranged at intervals in the axial direction of the input shaft 1, which can improve the support stability of the input shaft 1.

[0071] Reference Figure 1The torque loading assembly 4 is arranged on a side of the first support seat 32 away from the second support seat 33 , and the torque loading device 100 can engage with the first shaft segment 11 and can apply a torsional force to the first shaft segment 11 .

[0072] like Fig.11 As shown, in some embodiments of the present application, the second support seat 33 includes: a support block 331 and a fixed block 332, the support block 331 is arranged on the base 31, and the support block 331 is formed with a support groove 3312 open upward, the support groove 3312 is used to support the second shaft segment 12, the fixed block 332 is formed with a fixing groove 3322 open to one side of the support block 331, and the fixed block 332 can be fixedly connected to the support block 331 and clamp the second shaft segment 12 between the support block 331 and the fixed block 332.

[0073] The second support seat 33 fixes the second shaft segment 12 on the bracket assembly 3 by clamping, and the installation method is simple and has high reliability.

[0074] In some embodiments of the present application, the support block 331 and the fixing block 332 may be connected and fixed by a threaded connection assembly, such as a bolt (not shown) and a nut 34 .

[0075] Reference Fig.11 The support block 331 is provided with a first mounting hole 3311, which is set to penetrate the support block 331 along the first direction; the fixing block 332 is provided with a second mounting hole 3321, which is set to penetrate the fixing block 332 along the first direction. During the assembly process of the support block 331 and the fixing block 332, the first mounting hole 3311 and the second mounting hole 3321 are arranged opposite to each other, and the bolt can be sequentially passed through the second mounting hole 3321 and the first mounting hole 3311, and the screw rod part of the bolt extending out of the second mounting hole 3321 can be threadedly matched with the nut 34, and the fixing block 332 and the support block 331 are fastened by the bolt and the nut 34, so that the second shaft section 12 is clamped and fixed by the fixing block 332 and the support block 331.

[0076] It should be noted that the base 31 is a mounting carrier for the second support base 33, and the second support base 33 needs to be fixed on the base 31. In some optional embodiments, a threaded structure may be formed on the base 31 to replace the nut, and the bolt may be threadedly matched with the threaded structure on the base 31 after passing through the first mounting hole 3311 and the second mounting hole 3321 in sequence, so as to fix the second support base 33 on the base 31 while fastening the support block 331 and the fixing block 332.

[0077] Combination Figure 1 , Figure 8 and Fig.11As shown, in other optional embodiments, the bolts can be inserted through the base 31, the second mounting hole 3321 and the first mounting hole 3311 from bottom to top, and the part of the bolt extending out of the first mounting hole 3311 can be threadedly matched with the nut 34 to fix the support block 331, the fixing block 332 and the base 31.

[0078] Reference Fig. 9 An avoidance groove 313 is formed at the base 31. After the bolt passes through the base 31, the second mounting hole 3321 and the first mounting hole 3311 in sequence, the head of the bolt can be arranged at the avoidance groove 313, thereby hiding the head of the bolt in the avoidance groove 313 of the base 31.

[0079] It should be noted that the fixing cooperation among the support block 331 , the fixing block 332 and the base 31 is not limited thereto, and it is sufficient to fix the support block 331 , the fixing block 332 and the base 31 .

[0080] In some embodiments of the present application, the fixing block 332 is provided with a positioning hole 3323, the positioning hole 3323 is set through the fixing block 332 in the first direction, and the positioning hole 3323 is communicated with the fixing groove 3322. The positioning hole 3323 is provided with an internal thread inside, and the internal thread can be threadedly matched with the threaded positioning member 35, and the threaded positioning member 35 can be screwed into the positioning hole 3323 and abut against the second shaft segment 12 to lock and position the second shaft segment 12.

[0081] like Figure 1 and Figure 8 As shown, in some embodiments of the present application, the base 31 is provided with a slide groove 311 extending along the second direction, and at least one of the first support seat 32 and the second support seat 33 is slidably matched with the slide groove 311, so that the relative position between the first support seat 32 and the second support seat 33 can be adjusted, so that the input shaft 1 of different sizes can be supported by the first support seat 32 and the second support seat 33, and the adaptability of the bracket assembly 3 is improved. The second direction is parallel to the axial direction of the input shaft 1.

[0082] Reference Figure 1 Two slide grooves 311 arranged side by side are provided on the base 31, and the first support seat 32 and the second support seat 33 can be slidably arranged in the slide groove 311. By slidingly cooperating the first support seat 32, the second support seat 33 with the base 31, the positions of the first support seat 32 and the second support seat 33 relative to the base 31 can be adjusted.

[0083] It is understandable that when the size of the input shaft 1 changes during the test, the positions of the two support points formed on the input shaft 1 (i.e., the positions for supporting and cooperating with the first support seat 32 and the second support seat 33) will also change accordingly. In the present application, the positions of the first support seat 32 and the second support seat 33 relative to the base 31 are adjustable, so that the first support seat 32 and the second support seat 33 can be adjusted to a position suitable for matching with the input shaft 1, and then the test is performed, which can increase the scope of application of the bracket assembly 3 and improve the versatility of the bracket assembly 3.

[0084] like Figure 1 and Figure 8 As shown, in some embodiments of the present application, a plurality of threaded holes 312 arranged along the second direction are provided on the base 31 , and the threaded holes 312 are used for threaded connection with the driving rod 42 to load torsional force to the input shaft 1 .

[0085] Reference Figure 8 The threaded holes 312 can be configured as four, but the number of the threaded holes 312 is not limited thereto, and can also be three, five, etc.

[0086] It is understandable that, by providing a plurality of threaded holes 312 on the base 31 , the torque loading assembly 4 can be arranged at the corresponding threaded holes 312 according to the position of the input shaft 1 to ensure the torsional force loading effect of the torque loading assembly 4 on the input shaft 1 .

[0087] Combination Figure 1-Figure 11 Describe the assembly process of the torque loading device 100 according to the embodiment of the present application:

[0088] First, the torque loading assembly 4, the first support seat 32 and the support block 331 are installed on the base 31 according to the size of the input shaft 1 to be tested, and then the first shaft section 11 of the input shaft 1 is passed through and supported on the first support seat 32. At the same time, the torque loading part located at the end of the first shaft section 11 is spline-matched with the coupling block 41, and the second shaft section 12 of the input shaft 1 is supported on the support block 331.

[0089] Secondly, the input shaft 1 can be rotated to adjust the input shaft 1 to a position suitable for testing, and then the input shaft 1 can be constrained in the support groove 3312 and the fixing groove 3322 by cooperating with the support block 331, and further the second shaft segment 12 can be locked and positioned by cooperating with the positioning hole 3323 through the threaded positioning member 35 to limit the rotation of the second shaft segment 12.

[0090] Thus, the assembly of the torque loading device 100 is completed and can be tested.

[0091] During the test, the torque sensor 2 in the torque loading device 100 can be electrically connected to the motor ECU. The motor ECU can drive the motor based on the torque signal provided by the torque sensor 2. The torque sensor 2 generates a signal from the deformation amount of the torsion bar inside the input shaft 1. The motor ECU receives the signal and controls the rotation of the motor. The greater the torque, the higher the motor speed. When the input shaft 1 rotates in the opposite direction, the rotation direction of the motor will also change accordingly. Thus, it is possible to verify tests such as the lifespan and load capacity of the motor ECU to ensure the stability and reliability of the motor, thereby improving the safety during vehicle driving.

[0092] It should be noted that the adjustment principle of the torque loading device 100 is as follows: Simulate that during vehicle driving, the steering gear works normally, and the steering wheel rotates clockwise / counterclockwise. Rely on the torsion bar of the input shaft 1 to adjust the motor current and speed.

[0093] Among them, because in the test system, it is necessary to determine the rotation speed and rotation direction of the motor ECU according to the actually applied torque magnitude to achieve precise matching of power steering. In this application, the torsion force can be loaded on the input shaft 1 through the torque loading assembly 4, and the torque can be detected by the torque sensor 2, so that the motor ECU can control the motor based on the detection result of the torque sensor 2, realizing the simulation of the steering torque applied by the driver on the steering wheel through the torque loading device 100.

[0094] In summary, the torque loading device 100 according to the embodiments of this application has at least the following advantages:

[0095] (1) The torque loading device 100 can be used to simulate the steering torque applied by the driver on the steering wheel, and the simulation accuracy is high. Among them, the torsion force received at the input shaft 1 can be fed back to the motor ECU in the test system through the torque sensor 2, and the motor ECU can control the motor based on the signal of the torque sensor 2 to achieve precise matching of power steering in the test system.

[0096] (2) The torque loading device 100 has good versatility and can be matched with input shafts 1 of various sizes.

[0097] (3) The installation carrier of each component in the torque loading device 100 is the bracket assembly 3, which is convenient for handling the torque loading device 100. At the same time, the assembly method of the torque loading device 100 is simple and easy to operate.

[0098] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A torque loading device, characterized in that: include: An input shaft (1), the input shaft (1) comprising a first shaft section (11) and a second shaft section (12) arranged in an axial direction, wherein an end of the first shaft section (11) away from the second shaft section (12) is provided with a torque loading portion; a torque sensor (2), the torque sensor (2) being connected to the input shaft (1) and being used for detecting the input torque on one side of the first shaft section (11); A bracket assembly (3), the bracket assembly (3) being used to mount the input shaft (1) and being fixedly connected to the second shaft section (12); A torque loading component (4) is arranged on the bracket component (3) and is engaged with the torque loading portion, and the torque loading component (4) is used to output a driving force for rotating around the central axis of the input shaft (1) to the first shaft section (11).

2. The torque loading device according to claim 1, characterized in that: The torque loading component (4) comprises: an engagement block (41), the engagement block (41) being used to engage with the torque loading portion; A driving rod (42) is connected to the engaging block (41) and is used to drive the engaging block (41) to rotate around the central axis of the input shaft (1).

3. The torque loading device according to claim 2, characterized in that: The engagement block (41) is provided with a spline hole (413), the torque loading portion is configured as a spline segment (111), and the spline segment (111) is plug-fitted with the spline hole (413).

4. The torque loading device according to claim 2, characterized in that: The engagement block (41) is provided with a driving arm (411), and the driving rod (42) comprises: a rod body (421), the rod body (421) extending along a first direction and penetrating the driving arm (411), and the position of the rod body (421) relative to the bracket assembly (3) in the first direction is adjustable; A first driving block (422) and a second driving block (423), wherein the first driving block (422) and the second driving block (423) are arranged on the rod body (421), and the first driving block (422) and the second driving block (423) are respectively arranged on both sides of the driving arm (411) in the first direction, and are used to drive the driving arm (411) to swing around the central axis of the input shaft (1); Wherein, the first direction is perpendicular to the central axis of the input shaft (1).

5. The torque loading device according to claim 4, characterized in that: The support assembly (3) is provided with a threaded hole (312) extending along the first direction, and the rod body (421) is provided with a threaded section (424), and the threaded section (424) is threadedly matched with the threaded hole (312).

6. The torque loading device according to claim 5, characterized in that: The rod body (421) is provided with a rotating handle (425), and the rotating handle (425) can drive the rod body (421) to rotate, so as to screw the rod body (421) toward the threaded hole (312) or screw it out toward a side away from the threaded hole (312).

7. The torque loading device according to claim 4, characterized in that: The first driving block (422) is provided with a first driving spherical surface (4221), and the first driving spherical surface (4221) is in abutment with and matched with the driving arm (411) at a first side in the first direction; And / or, the second driving block (423) is provided with a second driving spherical surface (4231), and the second driving spherical surface (4231) is abutted and matched with the driving arm (411) on the second side of the first direction.

8. The torque loading device according to claim 1, characterized in that: The support assembly (3) comprises: A base (31), the base (31) being used for mounting the torque loading assembly (4); A first support seat (32), the first support seat (32) being arranged on the base (31), and the first support seat (32) being provided with a support bearing, the support bearing being used to support the first shaft section (11); A second support seat (33), the second support seat (33) is arranged on the base (31), and the second support seat (33) and the first support seat (32) are arranged at intervals in the axial direction of the input shaft (1), and are used to fix the second shaft section (12).

9. The torque loading device according to claim 8, characterized in that: The second support seat (33) comprises: a support block (331), the support block (331) being arranged on the base (31) and forming a support groove (3312) open upward, the support groove (3312) being used to support the second shaft segment (12); A fixing block (332), wherein the fixing block (332) is formed with a fixing groove (3322) open to one side of the supporting block (331), and the fixing block (332) can be fixedly connected to the supporting block (331) and clamp and fix the second shaft section (12).

10. The torque loading device according to claim 8, characterized in that: The base (31) is provided with a slide groove (311) extending along the second direction, and at least one of the first support seat (32) and the second support seat (33) is slidably matched with the slide groove (311); Wherein, the second direction is parallel to the axial direction of the input shaft (1).

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