A steering drive axle torque detection test device

Abstract

The present invention relates to the technical field of dynamic balancing test, and discloses a steering drive axle torque detection test device, including a base, the outer wall of the base is fixedly connected to a motor 1, the surface of the base is fixedly connected to a support platform, the top of the support platform is fixedly connected to a hydraulic cylinder, the inner wall of the support platform is fixedly connected to a motor 2, the output end of the motor 2 is fixedly connected to a detection block, a limiting mechanism is arranged inside the support platform, a positioning groove is provided on the inner wall of the support platform, a bridge body is placed in the positioning groove, the detection block is sleeved with the detection end of the bridge body, and also includes: an anti-deviation mechanism. The present invention limits the drive axle through the anti-deviation mechanism to prevent the drive axle from being offset due to vibration during the dynamic torque test, thereby affecting the torque test results, increasing the stability of the measurement data during the torque test, and enabling the test data to more accurately reflect the actual torque performance of the drive axle.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic balance testing, in particular to a steering drive axle torque detection test device. Background Art

[0002] With the rapid development of the automobile industry, the precise control of the performance of the steering drive axle has become increasingly critical. Against the backdrop of continuous innovation in automobile technology and increasing requirements for vehicle handling and safety, the steering drive axle torque detection test device came into being. It aims to provide accurate, reliable and efficient torque data measurement methods for the research and development, production and quality inspection of steering drive axles, help automobile parts manufacturers and related scientific research institutions to deeply explore the torque characteristics and working efficiency of steering drive axles, and promote the progress and optimization of the entire automotive steering drive technology field.

[0003] The patent application with application number CN201621482656.2 discloses a non-driven steering axle wheel hub torque detection test device, including a test base and a wheel hub bracket, wherein a wheel hub assembly is placed in the wheel hub bracket, and an angular reducer and a bearing seat assembly are fixed on the test base, the input end of the angular reducer is connected to a servo motor, and the output end of the angular reducer is connected to a static torque sensor through a flange, and the static torque sensor is connected to a transmission shaft installed in the bearing seat assembly through a flange, and the other end of the transmission shaft is connected to a universal coupling through a flange.

[0004] However, when the detection device is dynamically detecting the torque of the drive axle, the vibration generated will cause the drive axle to displace, which will have an adverse effect on the accuracy of the drive axle torque detection data, causing deviations in the detection results and failing to truly reflect the actual torque performance of the drive axle. Summary of the invention

[0005] The purpose of the present invention is to provide a steering drive axle torque detection test device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steering drive axle torque detection test device, comprising a base, the outer wall of the base is fixedly connected to a motor 1, the surface of the base is fixedly connected to a support platform, the top of the support platform is fixedly connected to a hydraulic cylinder, the inner wall of the support platform is fixedly connected to a motor 2, the output end of the motor 2 is fixedly connected to a detection block, a limiting mechanism is arranged inside the support platform, a positioning groove is opened on the inner wall of the support platform, a bridge body is placed in the positioning groove, the detection block is sleeved with the detection end of the bridge body, and also includes:

[0007] The anti-deviation mechanism is arranged inside the support platform, and the anti-deviation mechanism includes a positioning block, the bottom of the positioning block is fixedly connected to the bottom of the inner wall of the support platform, the inner wall of the positioning block is slidably connected to the support block, the inner wall of the support block is provided with a limiting groove, the limiting groove wall is slidably connected to a swing plate through a sliding block, the outer wall of the swing plate is hinged to the inner wall of the positioning block through a rotating shaft, the outer wall of the swing plate is hinged to a limiting plate one through a rotating shaft hinge, the inner wall of the limiting plate one is fixedly connected to an anti-sliding plate, the inner wall of the support block is rotatably connected to a positioning wheel one through a rotating shaft, the inner wall of the support block is slidably connected to a support rod, the bottom of the support rod is fixedly connected to the bottom of the inner wall of the support platform, the inner wall of the support rod is fixedly connected to a spring one, the other end of the spring one is fixedly connected to the inner wall of the support block, the inner wall of the positioning block contacts the outer wall of the bridge body for positioning the bridge body.

[0008] According to the above technical solution, the limiting mechanism includes a support plate 1, the surface of the support plate 1 is fixedly connected to the output end of the hydraulic cylinder, the inner wall of the support plate 1 is slidably connected to the limiting block, the outer wall of the limiting block is fixedly connected with a spring 2, the other end of the spring 2 is fixedly connected to the bottom of the support plate 1, a limiting component is arranged at the bottom of the support plate 1, and the support plate 1 is used to limit the limiting block.

[0009] According to the above technical solution, the limiting assembly includes support plate two, the top of support plate two is fixedly connected to the bottom of support plate one by connecting ribs, the inner wall of support plate two is slidably connected with an adjusting rod, the bottom of the adjusting rod is fixedly connected to support plate three, the top of support plate three is fixedly connected with spring three, the other end of spring three is fixedly connected to the bottom of support plate two, the bottom of support plate three is rotatably connected to positioning wheel two by a rotating shaft, and support plate three is used to limit the positioning wheel two.

[0010] According to the above technical solution, the inner wall of the support plate three is hingedly connected to the limit plate two through a rotating shaft, the outer wall of the limit plate two is hingedly connected to a compensation rod through a hinge block, the outer wall of the compensation rod is slidingly connected to the inner wall of the support plate two, the inner wall of the limit plate two is rotatably connected to a support wheel through a rotating shaft, and the limit plate two is used to fix the bridge body.

[0011] According to the above technical solution, the output end of the motor passes through the outer wall of the base and is connected to the transmission element inside the bridge body. There are two groups of anti-bias mechanisms, and the two groups of anti-bias mechanisms are symmetrically arranged on both sides of the inner wall of the support platform with the center line of the support platform as the symmetry axis. The outer wall of the limit plate 1 contacts the inner wall of the positioning block and slides along the inner wall of the positioning block. There are two groups of swing plates and limit plates 1. The two groups of swing plates and limit plates 1 are symmetrically arranged on both sides of the support block with the center line of the support block as the symmetry axis. The swing plate is used to adjust the position of the limit plate 1, and the limit groove is used to limit the swing plate.

[0012] According to the above technical solution, the bottom of the limit block contacts the top of the outer wall of the bridge body, so that the outer wall of the bridge body slides along the inclined surface of the bottom of the limit block. The limit block and spring 2 are in two groups. The two groups of limit blocks and spring 2 are symmetrically arranged on both sides of the bottom of the support plate 1 with the center line of the support plate 1 as the axis of symmetry. The limit block is used to adjust the position of the bridge body.

[0013] According to the above technical solution, there are two groups of limit components, and the two groups of limit components are symmetrically arranged on both sides of the bottom of the support plate 1 with the center line of the support plate 1 as the symmetry axis. The outer wall of the positioning wheel 2 is in contact with the outer wall of the bridge body and rolls along the outer wall of the bridge body. The positioning wheel 2 is used to apply pressure to the bridge body.

[0014] According to the above technical solution, the second outer wall of the limit plate contacts the outer wall of the positioning block and slides along the outer wall of the positioning block, the outer wall of the support wheel contacts the outer wall of the bridge body and rolls along the outer wall of the bridge body, and the support wheel is used to guide the limit plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The steering drive axle torque detection test device limits the drive axle through the anti-bias mechanism to prevent the drive axle from being offset due to vibration during the dynamic torque test, thereby affecting the torque test results, increasing the stability of the measurement data during the torque test, and enabling the test data to more accurately reflect the actual torque performance of the drive axle.

[0017] 2. The steering drive axle torque detection test device adjusts the position of the drive axle before the test through a limit mechanism, so that the drive axle can maintain a balanced torque test, and limits the drive axle during the test to prevent the drive axle from displacement during the torque test, which affects the torque test results, so that the torque test device can perform dynamic torque tests on the drive axle more stably.

[0018] 3. The steering drive axle torque detection test device applies pressure to the drive axle through the limit assembly, so that the drive axle can be positioned more accurately in the anti-bias mechanism. At the same time, the drive axle is clamped to reduce the vibration of the drive axle during the dynamic torque test, and prevent the displacement of the drive axle during the test, which will affect the test results, making the torque test process smoother.

[0019] 4. The steering drive axle torque detection test device positions the drive axle through the positioning groove, so that the drive axle can be stably tested for torque, and the displacement caused by the vibration of the drive axle during the dynamic torque test is reduced, so that the torque detection device increases the stability of the torque test on the drive axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0021] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0022] Figure 3 The structure of the present invention is schematically shown Figure 3 ;

[0023] Figure 4 The cross-sectional view of the anti-deflection mechanism of the present invention Figure 1 ;

[0024] Figure 5 The cross-sectional view of the anti-deflection mechanism of the present invention Figure 2 ;

[0025] Figure 6 For the present invention Figure 5 A is an enlarged schematic diagram;

[0026] Figure 7 It is a structural schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 8 The structure of the limit assembly of the present invention is shown in FIG. Figure 1 ;

[0028] Fig. 9 The structure of the limit assembly of the present invention is shown in FIG. Figure 2 .

[0029] In the figure: 1. base; 2. motor 1; 3. support platform; 4. bridge body; 5. anti-bias mechanism; 501. positioning block; 502. support block; 503. positioning wheel 1; 504. swing plate; 505. limit plate 1; 506. anti-sliding block; 507. limit slot; 508. support rod; 509. spring 1; 6. hydraulic cylinder; 7. limit mechanism; 701. support plate 1; 702. limit block; 703. spring 2; 71. limit assembly; 711. support plate 2; 712. adjustment rod; 713. support plate 3; 714. spring 3; 715. positioning wheel 2; 716. compensation rod; 717. limit plate 2; 718. support wheel; 8. motor 2; 9. detection block; 10. positioning slot. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] For example, see Figure 1-Figure 6The present invention provides a technical solution: a steering drive axle torque detection test device, including a base 1, a motor 2 is fixedly connected to the outer wall of the base 1, a support platform 3 is fixedly connected to the surface of the base 1, a hydraulic cylinder 6 is fixedly connected to the top of the support platform 3, a motor 8 is fixedly connected to the inner wall of the support platform 3, a detection block 9 is fixedly connected to the output end of the motor 8, a limited position mechanism 7 is arranged inside the support platform 3, a positioning groove 10 is opened on the inner wall of the support platform 3, a bridge body 4 is placed in the positioning groove 10, and the detection block 9 is sleeved with the detection end of the bridge body 4, and also includes:

[0032] The anti-deflection mechanism 5 is arranged inside the support platform 3. The anti-deflection mechanism 5 includes a positioning block 501. The bottom of the positioning block 501 is fixedly connected to the bottom of the inner wall of the support platform 3. The inner wall of the positioning block 501 is slidably connected to the support block 502. The inner wall of the support block 502 is provided with a limiting groove 507. The groove wall of the limiting groove 507 is slidably connected to a swing plate 504 through a slider. The outer wall of the swing plate 504 is hinged to the inner wall of the positioning block 501 through a rotating shaft. The outer wall of the swing plate 504 is hinged to a limiting plate 505 through a rotating shaft. The inner wall of the limiting plate 505 is fixedly connected to an anti-sliding block 506. The inner wall of the support block 502 is rotatably connected to a positioning wheel 506 through a rotating shaft. 3, the inner wall of the support block 502 is slidably connected with a support rod 508, the bottom of the support rod 508 is fixedly connected to the bottom of the inner wall of the support platform 3, the inner wall of the support rod 508 is fixedly connected with a spring 509, the other end of the spring 509 is fixedly connected to the inner wall of the support block 502, the inner wall of the positioning block 501 is in contact with the outer wall of the bridge body 4, and is used to position the bridge body 4. When the steering drive axle torque detection test device is put into use, the bridge body 4 is placed at the positioning groove 10 of the support platform 3, and the two sides of the bridge body 4 are aligned with the center position of the positioning block 501, the inner wall of the positioning block 501 is in contact with the outer wall of the bridge body 4, and the bridge body 4 is guided. When the bridge body 4 is placed on the positioning block 501 by its own weight, During the process of the bridge body 4 being placed on the bridge 4, the outer wall of the bridge body 4 contacts the outer wall of the positioning wheel 503, and drives the support block 502 to compress the spring 509 and slide downward on the outer wall of the support rod 508. During the downward movement of the support block 502, the swing plate 504 slides in the limiting groove 507, and drives the limiting plate 505 to swing toward the bridge body 4, so that the outer wall of the anti-sliding block 506 contacts the outer wall of the bridge body 4, and the bridge body 4 is adjusted and positioned. After the bridge body 4 is placed, the hydraulic cylinder 6 is started to adjust the lateral position of the bridge body 4 through the limiting mechanism 7, and a downward pressure is generated on the bridge body 4, so that the bridge body 4 is completely positioned through the positioning block 501. At the same time, the outer wall of the bridge body 4 squeezes the support block 502 to make the limiting plate 505 05 squeezes the anti-sliding block 506, so that the anti-sliding block 506 and the outer wall of the bridge body 4 generate friction to prevent the bridge body 4 from shifting during the dynamic torque test. At the same time, the limit mechanism 7 clamps the bridge body 4 to reduce the vibration of the bridge body 4 during the torque test. After the bridge body 4 is placed, the detection block 9 is sleeved on the steering connection of the bridge body 4, and the output end of the motor 2 is connected to the internal transmission element of the bridge body 4. Then, the motor 2 is started to simulate the working state of the steering bridge, and the motor 2 is started to perform a dynamic torque test on the bridge body 4. The data is detected by the detection block 9. After the detection is completed, the motor 2 and the motor 2 8 are stopped, and the hydraulic cylinder 6 is returned, and the bridge body 4 is removed to wait for the next torque detection;

[0033] The output end of the motor 2 passes through the outer wall of the base 1 and is connected to the transmission element inside the bridge body 4. There are two groups of anti-bias mechanisms 5. The two groups of anti-bias mechanisms 5 are symmetrically arranged on both sides of the inner wall of the support platform 3 with the center line of the support platform 3 as the symmetry axis. The outer wall of the limit plate 505 contacts the inner wall of the positioning block 501 and slides along the inner wall of the positioning block 501. There are two groups of swing plates 504 and limit plates 505. The two groups of swing plates 504 and limit plates 505 are symmetrically arranged on both sides of the support block 502 with the center line of the support block 502 as the symmetry axis. The swing plate 504 is used to adjust the position of the limit plate 505, and the limit groove 507 is used to limit the swing plate 504. The swing plate 504 moves along the limit groove 507. During the sliding process in the 7 direction, the swing plate 504 is hinged with the inner wall of the positioning block 501 for limiting, so that the swing plate 504 drives the limiting plate 505 to swing in the direction of the bridge body 4, so that the outer wall of the anti-sliding block 506 contacts the outer wall of the bridge body 4, and the bridge body 4 is adjusted and positioned. After the bridge body 4 is placed, the detection block 9 is sleeved on the steering connection of the bridge body 4, and after the output end of the motor 2 is connected to the internal transmission element of the bridge body 4, the motor 2 is started to simulate the working state of the steering bridge, and the motor 2 is started to perform a dynamic torque test on the bridge body 4. The two sets of anti-bias mechanisms 5 simultaneously position and support the bridge body 4, so that the positioning of the bridge body 4 is more perfect, and the bridge body 4 can run more stably during the dynamic torque test.

[0034] Example 2, based on Example 1, please refer to Figure 7 The present invention provides a technical solution: the limiting mechanism 7 includes a support plate 701, the surface of the support plate 701 is fixedly connected to the output end of the hydraulic cylinder 6, the inner wall of the support plate 701 is slidably connected to the limiting block 702, the outer wall of the limiting block 702 is fixedly connected with a spring 2 703, the other end of the spring 2 703 is fixedly connected to the bottom of the support plate 701, and a limiting component 71 is arranged at the bottom of the support plate 701, and the support plate 701 is used to limit the limiting block 702. After the bridge body 4 is placed, the hydraulic cylinder 6 is started to drive the support plate 701 to slide downward through the guide rod, so that the limiting block 7 02 outer wall contacts with the top of the outer wall of the bridge body 4, and the limit block 702 is squeezed by the spring 2 703 to generate downward pressure on the top of the outer wall of the bridge body 4, so that the bridge body 4 slides along the bottom inclined surface of the limit block 702, and the bridge body 4 is positioned and adjusted. At the same time, the limit assembly 71 generates downward pressure on the bridge body 4, so that the bridge body 4 is completely positioned after sliding and adjusting the inner wall of the positioning block 501. After the adjustment is completed, the limit block 702 compresses the spring 2 703 to slide on the outer wall of the support plate 1 701, so that the support plate 1 701 drives the limit assembly 71 to clamp the bridge body 4, thereby reducing the vibration of the bridge body 4 during the dynamic torque test.

[0035] The bottom of the limit block 702 contacts the top of the outer wall of the bridge body 4, so that the outer wall of the bridge body 4 slides along the inclined surface of the bottom of the limit block 702. The limit block 702 and the spring 2 703 are in two groups. The two groups of limit blocks 702 and the spring 2 703 are symmetrically arranged on both sides of the bottom of the support plate 1 701 with the center line of the support plate 1 701 as the symmetry axis. The limit block 702 is used to adjust the position of the bridge body 4. After the bottom of the limit block 702 contacts the top of the outer wall of the bridge body 4, the outer wall of the bridge body 4 slides along the inclined surface of the bottom of the limit block 702, so that the bridge body 4 slides on the wall of the positioning groove 10, and the bridge body 4 is adjusted and positioned. After the positioning is completed, the support plate 1 701 continues to descend, and the limit block 702 compresses the spring 2 703 to slide on the outer wall of the support plate 1 701, so that the support plate 1 701 drives the limit assembly 71 to clamp the bridge body 4, thereby reducing the vibration of the bridge body 4 during the dynamic torque test.

[0036] Example 3, based on Example 1 and Example 2, please refer to Figure 8-Figure 9 The present invention provides a technical solution: the limiting component 71 includes a second support plate 711, the top of the second support plate 711 is fixedly connected to the bottom of the first support plate 701 through a connecting rib, the inner wall of the second support plate 711 is slidably connected with an adjusting rod 712, the bottom of the adjusting rod 712 is fixedly connected with a third support plate 713, the top of the third support plate 713 is fixedly connected with a spring 3 714, the other end of the spring 3 714 is fixedly connected to the bottom of the second support plate 711, the bottom of the third support plate 713 is rotatably connected with a positioning wheel 2 715 through a rotating shaft, and the third support plate 713 is used to limit the positioning wheel 2 715. After the bridge body 4 is adjusted and positioned, the support plate The first 701 drives the second support plate to continue to descend, and the second positioning wheel 715 contacts the outer wall of the bridge body 4, driving the third support plate 713 to squeeze the third spring 714, and driving the adjustment rod 712 to slide on the inner wall of the second support plate 711 for adjustment. At the same time, the third spring 714 squeezes the third support plate 713 to make the second positioning wheel 715 generate downward pressure on the outer wall of the bridge body 4, so that the outer wall of the bridge body 4 slides on the inner wall of the positioning block 501 to the bottom and fits completely, and is completely positioned. At the same time, the bridge body 4 squeezes the support block 502 to make the limit plate 1 505 squeeze the anti-sliding block 506, so that the anti-sliding block 506 and the outer wall of the bridge body 4 generate friction, preventing the bridge body 4 from deflecting during the dynamic torque test;

[0037] The inner wall of the support plate 3 713 is connected to the limit plate 2 717 through a rotating shaft hinge, and the outer wall of the limit plate 2 717 is hinged with a compensation rod 716 through a hinge block hinge. The outer wall of the compensation rod 716 is slidably connected to the inner wall of the support plate 2 711, and the inner wall of the limit plate 2 717 is rotatably connected to a support wheel 718 through a rotating shaft. The limit plate 2 717 is used to fix the bridge body 4. The downward pressure generated by the positioning wheel 2 715 on the bridge body 4 makes the bridge body 4 completely positioned on the inner wall of the positioning block 501. The support plate 3 713 squeezes the spring 3 714 to drive the adjusting rod 71 2 Slide on the inner wall of the second support plate 711 to shorten the distance between the third support plate 713 and the second support plate 711, support the second limit plate 717 through the compensation rod 716, drive the second limit plate 717 to swing toward the bridge body 4, make the outer wall of the support wheel 718 contact with the outer wall of the bridge body 4, and roll along the outer wall of the bridge body 4, adjust the clamping direction of the second limit plate 717, and after the adjustment is completed, squeeze the support wheel 718 through the second limit plate 717, so that the support wheel 718 clamps the outer wall of the bridge body 4, so that the vibration of the bridge body 4 is reduced during the dynamic torque test;

[0038] There are two groups of limit components 71. The two groups of limit components 71 are symmetrically arranged on both sides of the bottom of the support plate 1 701 with the center line of the support plate 1 701 as the symmetry axis. The outer wall of the positioning wheel 2 715 contacts the outer wall of the bridge body 4 and rolls along the outer wall of the bridge body 4. The positioning wheel 2 715 is used to apply pressure to the bridge body 4. There are two groups of limit components. After the positioning wheel 2 715 contacts the outer wall of the bridge body 4, the support plate 3 713 is squeezed by the spring, so that the positioning wheel 2 715 generates downward pressure on the bridge body 4, so that the bridge body 4 is completely positioned on the inner wall of the positioning block 501. At the same time, the positioning wheel 2 715 rolls along the outer wall of the bridge body 4, so that the bridge body 4 is completely positioned after sliding on the inner wall of the positioning block 501. At the same time, the positioning wheel 2 715 rolls on the outer wall of the bridge body 4 to adjust it and continue to squeeze the bridge body 4.

[0039] The outer wall of the limit plate 2 717 contacts the outer wall of the positioning block 501 and slides along the outer wall of the positioning block 501. The outer wall of the support wheel 718 contacts the outer wall of the bridge body 4 and rolls along the outer wall of the bridge body 4. The support wheel 718 is used to guide the limit plate 2 717. After the outer wall of the support wheel 718 contacts the outer wall of the bridge body 4, it rolls along the outer wall of the bridge body 4 to adjust the clamping direction of the limit plate 2 717. After the adjustment is completed, the compensation rod 716 is supported by the support plate 3 713, driving the limit plate 2 717 to squeeze the support wheel 718, so that the support wheel 718 clamps the outer wall of the bridge body 4.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steering drive axle torque detection test device, comprising a base (1), a motor 1 (2) fixedly connected to the outer wall of the base (1), a support platform (3) fixedly connected to the surface of the base (1), a hydraulic cylinder (6) fixedly connected to the top of the support platform (3), a motor 2 (8) fixedly connected to the inner wall of the support platform (3), and a detection block (9) fixedly connected to the output end of the motor 2 (8), characterized in that: The support platform (3) is provided with a limiting mechanism (7) inside, the inner wall of the support platform (3) is provided with a positioning groove (10), the bridge body (4) is placed in the positioning groove (10), the detection block (9) is sleeved with the detection end of the bridge body (4), and further comprises: The anti-deflection mechanism (5) is arranged inside the support platform (3), and the anti-deflection mechanism (5) comprises a positioning block (501), the bottom of the positioning block (501) is fixedly connected to the bottom of the inner wall of the support platform (3), the inner wall of the positioning block (501) is slidably connected to the support block (502), the inner wall of the support block (502) is provided with a limiting groove (507), the groove wall of the limiting groove (507) is slidably connected to a swing plate (504) via a slider, the outer wall of the swing plate (504) is hinged to the inner wall of the positioning block (501) via a rotating shaft, and the outer wall of the swing plate (504) is hinged to the limiting groove (507) via the rotating shaft. A positioning plate (505), the inner wall of which is fixedly connected to an anti-sliding block (506), the inner wall of which is rotatably connected to a positioning wheel (503) via a rotating shaft, the inner wall of which is slidably connected to a support rod (508), the bottom of which is fixedly connected to the bottom of the inner wall of the support platform (3), the inner wall of which is fixedly connected to a spring (509), the other end of which is fixedly connected to the inner wall of the support block (502), the inner wall of which is in contact with the outer wall of the bridge body (4), for positioning the bridge body (4); The limiting mechanism (7) comprises a support plate 1 (701), the surface of the support plate 1 (701) being fixedly connected to the output end of the hydraulic cylinder (6), the inner wall of the support plate 1 (701) being slidably connected to a limiting block (702), the outer wall of the limiting block (702) being fixedly connected to a spring 2 (703), the other end of the spring 2 (703) being fixedly connected to the bottom of the support plate 1 (701), a limiting assembly (71) being arranged at the bottom of the support plate 1 (701), the support plate 1 (701) being used to limit the limiting block (702), the bottom of the limiting block (702) being in contact with the top of the outer wall of the bridge body (4), so that the outer wall of the bridge body (4) slides along the inclined surface of the bottom of the limiting block (702), and the limiting block (702) being used to adjust the position of the bridge body (4).

2. A steering drive axle torque detection test device according to claim 1, characterized in that: The limiting assembly (71) comprises a second support plate (711), the top of the second support plate (711) being fixedly connected to the bottom of the first support plate (701) via a connecting rib, an adjusting rod (712) being slidably connected to the inner wall of the second support plate (711), the bottom of the adjusting rod (712) being fixedly connected to a third support plate (713), the top of the third support plate (713) being fixedly connected to a third spring (714), the other end of the third spring (714) being fixedly connected to the bottom of the second support plate (711), the bottom of the third support plate (713) being rotatably connected to a second positioning wheel (715) via a rotating shaft, and the third support plate (713) being used to limit the second positioning wheel (715).

3. A steering drive axle torque detection test device according to claim 2, characterized in that: The inner wall of the support plate three (713) is hingedly connected to the limit plate two (717) via a rotating shaft, the outer wall of the limit plate two (717) is hingedly connected to a compensation rod (716) via a hinge block, the outer wall of the compensation rod (716) is slidably connected to the inner wall of the support plate two (711), the inner wall of the limit plate two (717) is rotatably connected to a support wheel (718) via a rotating shaft, and the limit plate two (717) is used to fix the bridge body (4).

4. A steering drive axle torque detection test device according to claim 1, characterized in that: The output end of the motor 1 (2) passes through the outer wall of the base (1) and is transmission-connected to the transmission element inside the bridge body (4). The anti-deflection mechanism (5) is provided in two groups. The two groups of the anti-deflection mechanism (5) are symmetrically arranged on both sides of the inner wall of the support platform (3) with the center line of the support platform (3) as the symmetry axis. The outer wall of the limit plate 1 (505) contacts the inner wall of the positioning block (501) and slides along the inner wall of the positioning block (501). The swing plate (504) and the limit plate 1 (505) are provided in two groups. The two groups of the swing plate (504) and the limit plate 1 (505) are symmetrically arranged on both sides of the support block (502) with the center line of the support block (502) as the symmetry axis. The swing plate (504) is used to adjust the position of the limit plate 1 (505), and the limit groove (507) is used to limit the swing plate (504).

5. The steering drive axle torque detection test device according to claim 1, characterized in that: The number of the limit blocks (702) and the second spring (703) is two sets, and the two sets of the limit blocks (702) and the second spring (703) are symmetrically arranged on both sides of the bottom of the first support plate (701) with the center line of the first support plate (701) as the symmetry axis.

6. A steering drive axle torque detection test device according to claim 2, characterized in that: The number of the limiting components (71) is two groups, and the two groups of limiting components (71) are symmetrically arranged on both sides of the bottom of the support plate (701) with the center line of the support plate (701) as the symmetry axis. The outer wall of the positioning wheel (715) contacts the outer wall of the bridge body (4) and rolls along the outer wall of the bridge body (4). The positioning wheel (715) is used to apply pressure to the bridge body (4).

7. The steering drive axle torque detection test device according to claim 3, characterized in that: The outer wall of the second limiting plate (717) contacts the outer wall of the positioning block (501) and slides along the outer wall of the positioning block (501); the outer wall of the supporting wheel (718) contacts the outer wall of the bridge body (4) and rolls along the outer wall of the bridge body (4); the supporting wheel (718) is used to guide the second limiting plate (717).

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