Driving performance detection device

Abstract

The utility model discloses a kind of driving performance detection devices, driving performance detection device includes test bench, supporting module and detection component, at least two installation grooves are opened in test bench, at least two installation grooves are spaced apart along first direction, each installation groove is equipped with supporting module respectively, supporting module includes mounting bracket and two supporting components, two supporting components are spaced apart on mounting bracket along second direction, and each supporting component includes multiple rollers respectively, multiple rollers are sequentially arranged along first direction and rotatably arranged on mounting bracket;Detection component includes speed sensor and angle sensor, speed sensor is arranged on mounting bracket and is used to detect the rotating speed of roller, to determine the driving speed of working machine, angle sensor is arranged on test bench and is used to detect the deflection angle of wheel, accurate measurement driving speed and deviation performance are realized, driving performance detection is convenient and fast and detection accuracy is high.

Description

Technical Field

[0001] This utility model belongs to the field of driving performance testing technology, and specifically relates to a driving performance testing device. Background Technology

[0002] The performance testing of skid steer loaders mainly involves evaluating the machine's overall speed and yaw rate. Currently, performance testing commonly employs outdoor road testing methods. However, this approach is susceptible to weather conditions; data accuracy is questionable in rainy or snowy weather, and outdoor road testing poses safety hazards and compromises operational safety. Furthermore, operators' driving habits can easily lead to steering wheel movements, interfering with the results. Yaw rate testing currently relies heavily on manual measurement with a tape measure, resulting in low accuracy and significant dependence on operator skill, making it difficult to output accurate quantitative data on yaw rate. In summary, performance testing suffers from poor accuracy, is easily influenced by interference, and is highly challenging. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies, this utility model provides a driving performance testing device, which aims to solve the technical problems of poor accuracy in driving performance testing and easy interference of test results.

[0004] To achieve the above objectives, this utility model provides a driving performance testing device, which includes: A test stand, wherein at least two mounting slots are provided on the test stand, and the at least two mounting slots are spaced apart along a first direction; The support module is provided in each mounting slot. The support module includes a mounting frame and two support components. The two support components are spaced apart on the mounting frame along a second direction. Each support component includes multiple rollers. The multiple rollers are arranged sequentially along a first direction and rotatably mounted on the mounting frame. The detection assembly includes a speed sensor and an angle sensor. The speed sensor is mounted on the mounting bracket and is used to detect the rotational speed of the roller, while the angle sensor is mounted on the test bench and is used to detect the deflection angle of the wheel.

[0005] In this embodiment of the present invention, at least one support module in the mounting slot on the test bench is configured as an adjustable support module. The driving performance testing device further includes an adjustment mechanism, which includes a base frame and a sliding drive component. The base frame is located in the mounting slot where the adjustable support module is located. The mounting frame of the adjustable support module is configured as a sliding mounting frame, which is slidably mounted on the base frame. The sliding drive component is used to drive the sliding mounting frame to slide along a first direction.

[0006] In this embodiment of the utility model, the driving performance testing device further includes a barcode scanner and a controller. The barcode scanner is set on the test bench and is used to scan the wheelbase information of the working machinery. The controller is communicatively connected to the barcode scanner and the sliding drive component. The controller is used to control the sliding drive component to drive the sliding mounting frame to slide according to the wheelbase information.

[0007] In this embodiment of the utility model, the driving performance testing device further includes a limiting mechanism, which includes a lifting beam and a lifting drive component. The lifting beam is movably mounted on the mounting frame and is located between any two adjacent rollers. The lifting drive component is drivenly connected to the lifting beam and communicates with the controller. The controller is used to control the lifting drive component to drive the lifting beam to rise and fall.

[0008] In this embodiment of the utility model, the limiting mechanism further includes a position sensor, which is disposed on the lifting beam and used to detect the position information of the working machinery. The controller is used to control the lifting drive component to drive the lifting beam to rise and fall according to the position information.

[0009] In this embodiment of the utility model, the driving performance testing device also includes a display. The display is spaced apart on one side of the test bench and is connected in communication with the controller. The display is used to display operation prompts, the driving speed of the working machinery, and the wheel deflection angle.

[0010] In this embodiment of the utility model, the adjustment mechanism further includes a guide rail and a slider. The guide rail is disposed on the base frame and extends along the first direction, and the slider is disposed on the sliding mounting frame and slidably connected to the guide rail.

[0011] In this embodiment of the utility model, the driving performance testing device further includes a braking mechanism, which includes an anti-rotation airbag and an air supply pump. The anti-rotation airbag is mounted on the mounting frame and located below the roller. The air supply pump is connected to the anti-rotation airbag and is used to supply air to the anti-rotation airbag.

[0012] In this embodiment of the utility model, the roller includes a cylinder body and two connecting shafts. The two connecting shafts are respectively located at both ends of the cylinder body, and the mounting bracket is provided with bearings for the connecting shafts to pass through at the positions corresponding to each connecting shaft.

[0013] In this embodiment of the utility model, guide ramps are provided at both ends of the test platform, and the guide ramps are inclined from top to bottom in the direction away from the mounting groove.

[0014] Through the above technical solution, the driving performance testing device provided by this utility model embodiment has the following beneficial effects: In the technical solution of this utility model, when testing the driving performance of the operating machinery, the operator maneuvers the operating machinery onto the test bench, so that the wheels of the operating machinery are supported on multiple rollers of the support assembly. The rotation of the wheels of the operating machinery drives the multiple rollers to rotate, thereby simulating the driving conditions of the operating machinery on the test bench. The speed sensor determines the driving speed of the operating machinery by detecting the rotation speed of the rollers, and the angle sensor detects the deflection angle of the wheels, realizing accurate measurement of the driving speed and deviation performance of the operating machinery, effectively reducing the error of manual testing. Moreover, since the operating machinery is always supported on the test bench, there is no need for the operator to observe the driving road conditions, which greatly reduces the need for manual steering wheel turning, further improving the accuracy of testing. Furthermore, the driving performance testing device can be set up indoors, effectively avoiding the impact of inclement weather on the test results and improving the safety of testing. The driving performance testing is convenient, fast and highly accurate.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the assembly structure of a driving performance testing device according to an embodiment of the present invention; Figure 2 This is an exploded view of a driving performance testing device according to an embodiment of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of a driving performance testing device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the adjustable support module in a driving performance testing device according to an embodiment of the present invention; Figure 5 This is an exploded view of the adjustable support module in a driving performance testing device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the support module in a driving performance testing device according to an embodiment of the present invention; Figure 7 This is an exploded structural diagram of the support module in a driving performance testing device according to an embodiment of the present invention; Figure 8This is a structural block diagram of a driving performance testing device according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The driving performance testing device of this utility model is described below with reference to the accompanying drawings.

[0020] like Figures 1 to 4 As shown, this utility model provides a driving performance testing device, which includes a test bench 10, a support module 20, and a testing component 30. The test bench 10 has at least two mounting slots 11, which are spaced apart along a first direction. Each mounting slot 11 is provided with a support module 20, which includes a mounting frame 21 and two support components 22. The two support components 22 are spaced apart on the mounting frame 21 along a second direction, and each support component 22 includes multiple rollers 221. The multiple rollers 221 are arranged sequentially along the first direction and rotatably mounted on the mounting frame 21. The testing component 30 includes a speed sensor 31 and an angle sensor 32. The speed sensor 31 is mounted on the mounting frame 21 and is used to detect the speed of the rollers 221. The angle sensor 32 is mounted on the test bench 10 and is used to detect the deflection angle of the wheel.

[0021] It should be noted that the driving performance testing device of this utility model can be used to test the driving performance of operating machinery. The operating machinery can be a skid steer loader, excavator or other operating machinery with driving function. This utility model does not limit the type of operating machinery tested by the driving performance testing device.

[0022] Specifically, the first direction is as follows: Figure 1 and Figure 2 The front and back directions are shown, and the second direction is as follows. Figure 1 and Figure 2As shown in the left and right directions, the test bench 10 has at least two mounting slots 11 arranged at intervals along the first direction. Each mounting slot 11 has a support module 20. The mounting frame 21 of the support module 20 is located in the mounting slot 11. The mounting frame 21 has two support components 22 arranged at intervals along the second direction. Each support component 22 includes multiple rollers 221 arranged sequentially along the first direction. The rollers 221 can rotate relative to the mounting frame 21. The mounting frame 21 is equipped with a speed sensor 31 that can detect the rotational speed of the rollers 221. The test bench 10 is equipped with an angle sensor 32 that can detect the deflection angle of the working machinery wheels.

[0023] When conducting performance testing of the work machinery, the operator maneuvers the machinery onto the test bench 10, so that the wheels of the machinery are supported on multiple rollers 221 of the support assembly 22. The rotation of the machinery's wheels drives the rollers 221 to rotate, thus simulating the working conditions of the machinery on the test bench 10. The speed sensor 31 determines the speed of the machinery by detecting the rotational speed of the rollers 221, and the angle sensor 32 detects the deflection angle of the wheels. This achieves accurate measurement of the machinery's speed and deviation performance, effectively reducing human error. Since the machinery is always supported on the test bench 10, the operator does not need to observe the road conditions, significantly reducing the need for manual steering wheel operation and further improving testing accuracy. Moreover, the performance testing device can be installed indoors, effectively avoiding the impact of inclement weather on the test results and improving testing safety. The performance testing is convenient, quick, and highly accurate.

[0024] In one embodiment of this utility model, the driving performance testing device is used to test the driving performance of a skid steer loader. The skid steer loader has a front axle and a rear axle. The number of mounting slots 11 is set to two. The support modules 20 in the two mounting slots 11 are respectively used to support the front axle wheels and the rear axle wheels. That is, the number of support modules 20 is consistent with the number of axles of the skid steer loader and is set one-to-one. Furthermore, the support module 20 includes two support components 22 arranged at intervals in the left-right direction. The two support components 22 are respectively used to support two wheels located at both ends of the same axle to realize the real simulation of driving conditions, reduce detection interference between the two wheels, and can detect the deflection angle of the four wheels by setting four angle sensors 32 respectively, and set a speed sensor 31 on each mounting frame 21 to obtain multiple sets of data in one test, further improving the accuracy of driving performance testing.

[0025] Understandably, the number of support modules 20 can be two, three or other numbers. The number of mounting slots 11 is consistent with the number of support modules 20 and is set in a one-to-one correspondence. The number of support modules 20 is consistent with the number of axles of the working machinery. The driving performance testing device of this utility model does not limit the number of mounting slots 11 and the number of support modules 20.

[0026] In this embodiment of the present invention, at least one support module 20 in the mounting slot 11 on the test bench 10 is configured as an adjustable support module 20a. The driving performance testing device further includes an adjustment mechanism 40, which includes a base frame 41 and a sliding drive member 42. The base frame 41 is located in the mounting slot 11 where the adjustable support module 20a is located. The mounting frame 21 of the adjustable support module 20a is configured as a sliding mounting frame 21a. The sliding mounting frame 21a is slidably mounted on the base frame 41. The sliding drive member 42 is used to drive the sliding mounting frame 21a to slide along a first direction.

[0027] like Figures 2 to 5 As shown, a base frame 41 and an adjustable support module 20a are provided in one of the mounting slots 11 on the test bench 10. The sliding mounting bracket 21a of the adjustable support module 20a is slidably mounted on the base frame 41. The sliding drive component is driven to connect with the sliding mounting bracket 21a to drive the sliding mounting bracket 21a to slide along the first direction, so that the sliding mounting bracket 21a can move towards or away from the adjacent mounting bracket 21. This realizes the adjustment of the distance between the adjustable support module 20a and the adjacent support module 20, thereby making the driving performance testing device applicable to testing various wheelbase working machinery. The adjustment is flexible and convenient, and the testing versatility is high.

[0028] Furthermore, the adjustment mechanism 40 also includes a guide rail 43 and a slider 44. The guide rail 43 is mounted on the base frame 41 and extends along the first direction, while the slider 44 is mounted on the sliding mounting bracket 21a and is slidably connected to the guide rail 43. Figure 4 and Figure 5 As shown, the base frame 41 is provided with a guide rail 43 extending along the first direction, and the lower side of the sliding mounting bracket 21a is provided with a slider 44. The slider 44 is slidably disposed on the guide rail 43, so that the slider 44 can drive the sliding mounting bracket 21a to slide along the first direction. The slider 44 and the guide rail 43 cooperate to guide the sliding of the sliding mounting bracket 21a, thereby improving the smoothness of adjustment of the sliding mounting bracket 21a.

[0029] In this embodiment of the utility model, the driving performance testing device further includes a barcode scanner 50 and a controller 60. The barcode scanner 50 is mounted on the test bench 10 and is used to scan the wheelbase information of the working machinery. The controller 60 is communicatively connected to the barcode scanner 50 and the sliding drive component 42. The controller 60 is used to control the sliding drive component 42 to drive the sliding mounting bracket 21a to slide according to the wheelbase information.

[0030] like Figure 8 As shown, the barcode scanner 50 can scan the wheelbase information of the operating machinery and send the wheelbase information to the controller 60. The controller 60 receives the wheelbase information and controls the sliding drive 42 to drive the sliding mounting bracket 21a to slide, so as to adjust the distance between the sliding mounting bracket 21a and the adjacent mounting bracket 21. This allows the adjustable support module 20a and the adjacent support module 20 to adapt to the wheelbase of the operating machinery. There is no need to manually operate the sliding drive 42 to adjust the position of the sliding mounting bracket 21a, which improves the convenience and accuracy of the distance adjustment.

[0031] Understandably, the scanning of the wheelbase information of the working machinery by the barcode scanner 50, the communication connection between the controller 60 and the barcode scanner 50 and the sliding drive 42, and the control of the controller 60 to adjust the position of the sliding mounting bracket 21a by the sliding drive 42 according to the wheelbase information can all adopt existing technologies and are not part of the core improvement of this utility model, so they will not be described in detail here.

[0032] In this embodiment of the utility model, the driving performance testing device further includes a limiting mechanism 70, which includes a lifting beam 71 and a lifting drive component 72. The lifting beam 71 is movably mounted on the mounting frame 21 and is located between any two adjacent rollers 221. The lifting drive component 72 is drivenly connected to the lifting beam 71 and is communicatively connected to the controller 60. The controller 60 is used to control the lifting drive component 72 to drive the lifting beam 71 to rise and fall.

[0033] like Figure 6 and Figure 7 As shown, the mounting frame 21 is equipped with a lifting beam 71 that can be raised and lowered relative to the mounting frame 21. Rollers 221 are respectively provided on both sides of the lifting beam 71. The lifting drive component 72 is driven to the lifting beam 71 and is used to drive the lifting beam 71 to rise and fall. When the driving performance of the working machinery is tested, the operator drives the working machinery to the test platform 10, so that the wheels of the working machinery come into contact with the lifting beam 71. The lifting beam 71 increases the friction between the working machinery and the wheels and restricts the rotation of the wheels. This helps to help the working machinery stop steadily on the test platform 10 and plays a role in positioning the working machinery test position. It effectively prevents the working machinery from deviating from the test position. Furthermore, when the working machinery is stably supported on the test platform 10, the controller 60 controls the lifting drive component 72 to drive the lifting beam 71 to descend, thereby releasing the restriction on the rotation of the wheels and enabling the driving performance test.

[0034] In this embodiment of the utility model, the limiting mechanism 70 further includes a position sensor 73, which is disposed on the lifting beam 71 and used to detect the position information of the working machinery. The controller 60 is used to control the lifting drive component 72 to drive the lifting beam 71 to rise and fall according to the position information.

[0035] like Figure 8As shown, the position sensor 73 can detect the position information of the working machinery and send the position information to the controller 60. The controller 60 receives the position information and controls the lifting drive component 72 to drive the lifting beam 71 to rise and fall. Specifically, when the controller 60 receives the position information, it determines that the working machinery is stably supported on the test platform 10 and that the wheels are in contact with the lifting beam 71. The controller 60 then controls the lifting drive component 72 to drive the lifting beam 71 to fall, thereby releasing the rotation restriction of the lifting beam 71 on the wheel chock, so as to facilitate the driving performance test operation, improve the automation level of the driving performance test device, and further improve the convenience of the test.

[0036] Understandably, the position sensor 73 detecting the position information of the working machinery, the communication connection between the controller 60 and the position sensor 73 and the lifting drive component 72, and the controller 60 controlling the lifting drive component 72 to drive the lifting beam 71 based on the position information can all adopt existing technologies and are not part of the core improvement of this utility model, so they will not be described in detail here. In addition, the position sensor 73 can adopt a photoelectric switch from the prior art. When the working machinery travels to the test bench 10, it blocks the detection beam so that the photoelectric switch can detect the position information of the working machinery.

[0037] In this embodiment of the invention, the driving performance testing device further includes a display 80, which is spaced apart on one side of the test bench 10 and communicatively connected to the controller 60. The display 80 is used to display operation prompts, the driving speed of the working machinery, and the wheel deflection angle. Figure 8 As shown, the display 80 is communicatively connected to the controller 60. The controller 60 can send operation prompts to the display 80, enabling the display 80 to display corresponding operation prompts according to the test progress during the driving performance test. Specifically, when the position information of the working machinery is not detected, the display 80 can display operation prompts to guide the operator to drive the working machinery to the test bench 10; when the lifting drive component 72 drives the lifting beam 71 to descend, the display 80 can display operation prompts to guide the operator to accelerate the working machinery to the test speed; and after the test is completed, the display 80 can display operation prompts to guide the operator to drive the working machinery away from the test bench 10, thereby improving the intelligence level of the driving performance test and thus improving the convenience of the test.

[0038] Furthermore, the driving performance testing device also includes an encoder, which is communicatively connected to both the speed sensor 31 and the controller 60. The speed sensor 31 detects the rotational speed of the roller 221 and sends it to the encoder. The encoder converts the rotational speed of the roller 221 into an electrical pulse signal and sends the electrical pulse signal to the controller 60. The pulse frequency of the electrical pulse signal is proportional to the driving speed of the working machinery, allowing the controller 60 to determine the driving speed of the working machinery based on the rotational speed of the roller 221. The controller 60 sends the driving speed and wheel deflection angle to the display 80, which displays the detection results of the driving speed and deflection angle for easy recording and statistical analysis by the operator, improving the convenience of data acquisition. In addition, the angle sensor 32 can be a laser sensor, which has the advantage of high detection accuracy, improving the accuracy of deviation performance detection.

[0039] In this embodiment of the utility model, the driving performance testing device further includes a braking mechanism 90, which includes an anti-rotation airbag 91 and an air supply pump 92. The anti-rotation airbag 91 is disposed on the mounting frame 21 and located below the roller 221. The air supply pump 92 is connected to the anti-rotation airbag 91 and is used to supply air to the anti-rotation airbag 91.

[0040] like Figure 7 As shown, the mounting frame 21 is equipped with anti-rotation airbags 91, which are spaced apart below the roller 221. After the driving performance test is completed, the air supply pump 92 can supply air into the anti-rotation airbags 91, causing the anti-rotation airbags 91 to expand and come into contact with the roller 221. The anti-rotation airbags 91 reduce the rotation speed of the roller 221 through the friction between them and the roller 221, thus assisting the roller 221 to stop rotating. This prevents the roller 221 from continuing to rotate when the wheels are stopped, thus preventing wear and improving the safety of the test and the reliability of the braking.

[0041] In the embodiments of this utility model, such as Figure 6 and Figure 7 As shown, the roller 221 includes a roller body 2211 and two connecting shafts 2212. The two connecting shafts 2212 are respectively located at both ends of the roller body 2211. The mounting bracket 21 is provided with bearings 23 for the connecting shafts 2212 to pass through, corresponding to the position of each connecting shaft 2212. That is, the number of bearings 23 is the same as the number of connecting shafts 2212 and they are set one-to-one. The bearings 23 play the role of supporting the roller body 2211, thereby improving the support stability of the roller body 2211 for the wheel.

[0042] In the embodiments of this utility model, such as Figures 1 to 3As shown, guide ramps 12 are provided at both ends of the test bench 10. The guide ramps 12 are inclined from top to bottom in the direction away from the mounting groove 11. The guide ramps 12 serve to guide the operation machinery, making it easier for the operator to control the operation machinery to drive onto the test bench 10 and reducing the difficulty of testing.

[0043] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A driving performance testing device, characterized in that, The driving performance testing device includes: A test bench (10) is provided with at least two mounting slots (11), and the at least two mounting slots (11) are spaced apart along a first direction; Support module (20), each of the mounting slots (11) is provided with support module (20), the support module (20) includes mounting frame (21) and two support components (22), the two support components (22) are spaced apart on the mounting frame (21) along the second direction, and each support component (22) includes multiple rollers (221), the multiple rollers (221) are arranged sequentially along the first direction and rotatably mounted on the mounting frame (21); The detection component (30) includes a speed sensor (31) and an angle sensor (32). The speed sensor (31) is mounted on the mounting frame (21) and is used to detect the speed of the roller (221). The angle sensor (32) is mounted on the test bench (10) and is used to detect the deflection angle of the wheel.

2. The driving performance testing device according to claim 1, characterized in that, At least one support module (20) in the mounting slot (11) on the test bench (10) is configured as an adjustable support module (20a). The driving performance testing device further includes an adjustment mechanism (40). The adjustment mechanism (40) includes a base frame (41) and a sliding drive component (42). The base frame (41) is located in the mounting slot (11) where the adjustable support module (20a) is located. The mounting bracket (21) of the adjustable support module (20a) is configured as a sliding mounting bracket (21a). The sliding mounting bracket (21a) is slidably mounted on the base frame (41). The sliding drive component (42) is used to drive the sliding mounting bracket (21a) to slide along the first direction.

3. The driving performance testing device according to claim 2, characterized in that, The driving performance testing device also includes a barcode scanner (50) and a controller (60). The barcode scanner (50) is mounted on the test bench (10) and is used to scan the wheelbase information of the working machinery. The controller (60) is communicatively connected to the barcode scanner (50) and the sliding drive (42). The controller (60) is used to control the sliding drive (42) to drive the sliding mounting bracket (21a) to slide according to the wheelbase information.

4. The driving performance testing device according to claim 3, characterized in that, The driving performance testing device also includes a limiting mechanism (70), which includes a lifting beam (71) and a lifting drive component (72). The lifting beam (71) is movably mounted on the mounting frame (21) and is located between any two adjacent rollers (221). The lifting drive component (72) is drivenly connected to the lifting beam (71) and communicates with the controller (60). The controller (60) is used to control the lifting drive component (72) to drive the lifting beam (71) to rise and fall.

5. The driving performance testing device according to claim 4, characterized in that, The limiting mechanism (70) also includes a position sensor (73), which is mounted on the lifting beam (71) and used to detect the position information of the working machinery. The controller (60) is used to control the lifting drive (72) to drive the lifting beam (71) to lift according to the position information.

6. The driving performance testing device according to claim 3, characterized in that, The driving performance testing device also includes a display (80), which is spaced on one side of the test bench (10) and communicates with the controller (60). The display (80) is used to display operation prompts, the driving speed of the working machinery and the wheel deflection angle.

7. The driving performance testing device according to claim 2, characterized in that, The adjustment mechanism (40) further includes a guide rail (43) and a slider (44). The guide rail (43) is disposed on the base frame (41) and extends along the first direction. The slider (44) is disposed on the sliding mounting bracket (21a) and is slidably connected to the guide rail (43).

8. The driving performance testing device according to any one of claims 1 to 7, characterized in that, The driving performance testing device also includes a braking mechanism (90), which includes an anti-rotation airbag (91) and an air supply pump (92). The anti-rotation airbag (91) is mounted on the mounting frame (21) and located below the roller (221). The air supply pump (92) is connected to the anti-rotation airbag (91) and is used to supply air to the anti-rotation airbag (91).

9. The driving performance testing device according to any one of claims 1 to 7, characterized in that, The roller (221) includes a cylinder body (2211) and two connecting shafts (2212). The two connecting shafts (2212) are respectively located at both ends of the cylinder body (2211). The mounting bracket (21) is provided with bearings (23) for the connecting shafts (2212) to pass through at the positions corresponding to each connecting shaft (2212).

10. The driving performance testing device according to any one of claims 1 to 7, characterized in that, The test bench (10) has guide ramps (12) at both ends, and the guide ramps (12) are inclined from top to bottom in a direction away from the mounting groove (11).

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