A balance detection device for automobile axle assembly leaving factory

Abstract

The invention discloses a balance detection device for automobile axle assemblies leaving the factory, relates to the technical field of balance detection of automobile axle assemblies, and is used to solve the problem of lack of dynamic simulation detection of the entire axle and failure to obtain a more accurate debugging result; the invention utilizes a turntable in the steering process to abut the outer side of a wheel disc, and realizes clamping and rotating of both sides of the wheel disc by rotating a motor in a transmission box, simulates the activity of the wheel discs on both sides of the axle, and performs toe-in value deflection trend detection of the axle, thereby performing secondary toe-in value calibration and adjustment through a tightening adjustment mechanism on a slide table, prolonging the toe-in adjustment time of vehicles subsequently assembled with the axle, and ensuring the balance and stability of the entire axle assembly before leaving the factory; at the same time, when performing toe-in value deflection trend detection of the axle, the toe-in value obtained in the early stage can also be verified, so as to ensure the normality of the tie rod and angle sensor on the entire axle, and play a role of reverse verification.

Description

Technical Field

[0001] The invention relates to the technical field of automobile axle assembly balance detection, in particular to a factory-used balance detection device for automobile axle assemblies. Background Art

[0002] After the front axle is assembled, the center planes of the two front wheel discs are not parallel, but the front ends are slightly toe-in, so that the distance A between the front ends of the two wheels is smaller than the distance B at the rear ends. Figure 1 As shown, the difference (BA) is the toe value of the front wheels. Due to the camber of the wheels, the wheels tend to roll outwards when rolling. However, due to the constraints of the front axle and the steering tie rod, the wheels cannot roll outwards, and tend to slide outwards while rolling.

[0003] The horizontal lateral sliding forces generated by the above two types of rolling are opposite in direction and are basically equal in magnitude, so that the wheel can roll in a direction close to the front at every instant, reducing and eliminating the adverse consequences caused by wheel camber; in addition, as the clearance of the mating parts changes, the driving resistance will cause the steering wheel to stretch outward, which also requires front wheel toe-in to compensate. The toe-in can generally be adjusted by changing the length of the steering tie rod. The correctness of the front wheel toe-in adjustment will directly affect the size of the side slip force and side slip of the front wheel, thereby having a certain impact on the rolling resistance coefficient of the tire, the fuel consumption of the car and the service life of the tire.

[0004] At present, the front axle assembly of the vehicle will be adjusted for the toe value before leaving the factory, which is generally controlled at 1-3mm. The axle is moved to the detection area using a movable guide rail, and then the measuring hanging plate is abutted against the outer bolts of the wheel discs on both sides of the axle. The laser distance measuring sensor installed on the hanging plates on both sides is used for distance detection, and the acquired signal is sent to the processor. After a simple calculation, the error value is fed back on the display screen. The operator manually adjusts according to the error range to complete the balance detection operation of the entire axle. Since the detection involves sensor detection, the detection method is relatively simple, and the detection equipment does not further verify the measurement data. It is easy to cause the axle toe value debugging to be unbalanced when the detection mechanism fails. At the same time, there is a lack of dynamic simulation detection of the entire axle, and a more accurate debugging result cannot be obtained;

[0005] To this end, we propose a balance detection device for automobile axle assemblies leaving the factory. Summary of the invention

[0006] The purpose of the present invention is to provide a balance detection device for automobile axle assemblies before leaving the factory, so as to solve the problem that the detection equipment proposed in the above background technology does not further verify the measurement data, which is easy to cause imbalance in the axle toe value debugging due to failure of the detection mechanism, and lacks dynamic simulation detection of the entire axle, and fails to obtain more accurate debugging results.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a balance detection device for a vehicle axle assembly for factory delivery, comprising a placement plate, a movable frame is slidably connected to one side of the top of the placement plate, a fixed frame is fixed to the other side of the top of the placement plate by bolts, a support rod is fixedly installed on the top of the placement plate and on the opposite side of the movable frame and the fixed frame, and a lifting block is slidably connected to one side of the movable frame;

[0008] A slide is fixed to one side of the movable frame and the fixed frame by bolts, a tightening adjustment mechanism is slidably connected to the slide, a turntable is movably connected to the top of the fixed frame by a bearing, a transmission box is fixedly connected to one side of the turntable, and an angle sensor is fixed to the fixed frame and located at the bottom of the turntable by bolts.

[0009] Furthermore, a bracket symmetrically fixed on the inner wall of the bottom of the turntable is movably connected to a special-shaped wheel, a motor is installed on the turntable, a fixed gear at one end of the motor is connected to the axial fixed gear of the special-shaped wheel through a toothed chain, and a rotating clamp mechanism is movably connected to one side of the turntable.

[0010] Furthermore, the transfer and clamping mechanism includes a shell, a threaded rod and an arc-shaped clamping plate. The inner wall of one side of the turntable is movably connected to the shell, and a sliding groove is opened on one side of the shell. A sleeve rod is slidably connected in the sliding groove. One side of the sleeve rod passes through the sliding groove and is fixed with an arc-shaped clamping plate by spot welding, and a rubber block is fixed to the inner side of the arc-shaped clamping plate by gluing. The inner walls on both sides of the shell are movably connected to the threaded rod through bearings, and the threads on both sides of the threaded rod are opposite. A transmission tooth is fixed to the center sleeve of the threaded rod, and one side of the two sleeve rods is threadedly sleeved with the corresponding two sides of the threaded rod.

[0011] Furthermore, motor 2 and motor 3 are fixed to the inner wall of one side of the transmission box by bolts respectively, a transmission shaft is fixedly connected to the output end of motor 2, and one end of the transmission shaft is movably connected to the inner wall of the transmission box, and a rotating shaft is fixed to the output end of motor 3, one end of the rotating shaft passes through one side of the transmission box and is fixed to the inner wall of one side of the shell.

[0012] Furthermore, a straight-striped sleeve is slidably mounted on the rotating shaft, one side of the straight-striped sleeve passes through the shell and is meshed with the transmission teeth, and a gear set shaft is movably connected to the inner walls on both sides of the transmission box, a gear is installed on one side of the gear set shaft and is meshed with the straight-striped sleeve, and a gear is installed on the other side of the gear set shaft and is meshed with the transmission shaft.

[0013] Furthermore, an electric push rod is fixed to one side of the movable frame by bolts, a placement box is fixed to one end of the electric push rod by bolts, a support rod is symmetrically installed on one side of the placement box, and one end of the support rod passes through the through slot on the movable frame and is evenly sleeved and slidably provided with a leather cover.

[0014] Furthermore, a control console is installed on one side of the fixing frame, and the control console includes a front-end data acquisition unit, a controller and a simulation data analysis unit;

[0015] The front-end data acquisition unit is used to obtain the comprehensive data of the wheel disc rotation on one side of the axle, wherein the comprehensive data of the wheel disc rotation on one side of the axle includes the average value ZC of the pressure difference between the two sides of the wheel disc rotation, the average value ZY of the wheel disc rotation side slip squeeze and the wheel disc rotation side slip value ZL. The controller is used to adjust the drive assembly on the placement board;

[0016] The simulation data analysis unit is used to obtain and process the single-side wheel disc deflection angle collected by the angle sensor when the axle is initially placed and the toe value calculated by the formula, as well as the comprehensive data of the single-side wheel disc rotation of the axle, which specifically includes the following steps:

[0017] Step 1: Obtain the wheel disc deflection angle and calculate the toe value when the axle is stationary through the formula, and compare it with the toe threshold range z set in the data simulation analysis unit. When the measured value is greater than zmax or less than zmin, a first-level adjustment signal is generated and sent to the controller. The controller adjusts the slide table and tightens the adjustment mechanism to adjust the tie rod on the axle until the measured value is within the set threshold range.

[0018] Step 2: Start the motor 2 in the transmission box through the controller to drive the arc-shaped clamping plate to clamp the two sides of the wheel disc, and start the motor 3 to drive the single-side wheel disc to rotate, and control the electric push rod on the other side to push the leather sleeve on the support rod to contact the bottom of the wheel disc, and then start to obtain the comprehensive data of the rotation of the single-side wheel disc of the axle;

[0019] Step 3: Obtain the wheel deflection trend coefficient Y through calculation and compare it with the stored deflection trend coefficient threshold y:

[0020] When Y>y, a secondary adjustment signal is generated, and the tightening adjustment mechanism is controlled by a controller. When Y≤y, no signal is generated.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, a turntable is used during the steering process to abut the outer side of the wheel disc, and the motor in the transmission box is rotated to realize the clamping rotation of the two sides of the wheel disc, thereby simulating the movement of the wheel discs on both sides of the axle, and the toe value deflection trend of the axle is detected, so that the secondary toe value calibration and adjustment is performed through the tightening adjustment mechanism on the slide, thereby extending the toe adjustment time of the subsequent axle-assembled vehicles, ensuring the balance and stability of the entire axle assembly before leaving the factory, and at the same time, when the toe value deflection trend detection of the axle is performed, the toe value obtained in the early stage can also be verified, thereby ensuring the normal operation of the tie rods and angle sensors on the entire axle, which plays a role of reverse verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the toe difference BA of the front axle of the vehicle;

[0024] Figure 2 It is a schematic diagram of the overall structure of the balance detection device for the automobile axle assembly delivered from the factory of the present invention;

[0025] Figure 3 It is a schematic diagram of the distribution structure of the clamping mechanism and the special-shaped wheels on the turntable of the present invention;

[0026] Figure 4 It is a schematic diagram of the connection structure between the clamping mechanism of the present invention and the components in the transmission box;

[0027] Figure 5 It is a schematic diagram of the structure of the leather sleeve on the support rod and the wheel disc abutting against each other in the movable frame of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the present invention in which the wheel disc rotates to drive the leather sleeve on the support rod to move;

[0029] Figure 7 The present invention is a flow chart of the balance detection process for the automobile axle assembly before leaving the factory.

[0030] In the figure: 1. Placement plate; 2. Fixed frame; 3. Support rod; 4. Movable frame; 5. Lifting block; 6. Slide; 7. Tightening adjustment mechanism; 8. Turntable; 9. Transmission box; 10. Clamping mechanism; 101. Shell; 102. Threaded rod; 103. Transmission gear; 104. Slide; 105. Sleeve rod; 106. Arc clamp; 11. Motor 1; 12. Special-shaped wheel; 13. Motor 2; 14. Transmission shaft; 15. Gear shaft; 16. Motor 3; 17. Rotating shaft; 18. Straight stripe sleeve; 19. Angle sensor; 20. Electric push rod; 21. Placement box; 22. Support rod; 23. Leather cover; 24. Control panel. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-7 , the present invention provides a technical solution:

[0033] Embodiment 1: It involves the toe value adjustment of the front axle assembly of the vehicle before leaving the factory. Different from the difference obtained by directly performing laser ranging on both sides, the present invention performs secondary verification based on the initial measurement to ensure that the collected toe data and the adjusted toe data are accurate, eliminate the measurement error of the measurement sensor, and can also perform dynamic simulation toe deflection measurement of the axle, realize more accurate adjustment of the axle toe value according to the deflection tendency, and extend the secondary adjustment time of the vehicle toe after the axle is assembled;

[0034] like Figure 2 As shown, due to the heavy weight of the axle, the factory hanging rail is used for transportation and movement. The position of the movable frame 4 on the placement plate 1 is adjusted according to the length of the axle, and the screw rod on the placement plate 1 is rotated to adjust the relative position of the movable frame 4. Due to the uneven weight on both sides of the axle assembly, the horizontal tie rod on the bridge shell is tilted upward during lifting. After the wheel discs on both sides are clamped on the turntable 8 and the movable frame 4, the lifted support rod 3 abuts against the side of the axle linkage shaft, and cooperates with the lifting block 5 on the movable frame 4 to abut against the horizontal tie rod, driving the entire bridge shell to rotate, and making the horizontal tie rod adjustment hole level;

[0035] Since the wheel discs on both sides are set inwardly when the axle assembly is assembled, the turntable 8 is placed on the fixed frame 2, causing the turntable 8 to deflect as a whole. At this time, the inner wall of the turntable 8 is tightly pressed against the bolts on both sides of the wheel disc, and the deflection angle of the wheel disc is the same as that of the turntable 8. Therefore, the toe value of the entire axle can be obtained by measuring the deflection angle of the turntable 8 in combination with the diameter of the wheel disc. For the measurement of the deflection angle of the turntable 8, an angle sensor 19 is installed on the fixed frame 2 to measure the rotation angle of the turntable 8.

[0036] The toe value obtained after the axle is placed statically on the placement plate 1 is fed back to the console. The analog data analysis unit in the console compares the obtained initial toe value with the axle toe threshold range z set in advance. Usually, the axle toe threshold range is kept between 1-3mm. When the measured value is greater than zmax or less than zmin, it means that the toe of the axle is too large or too small. If it is too large, the distance between the two sides of the tie rod on the axle housing needs to be lengthened, and if it is too small, it needs to be shortened.

[0037] For this reason Figure 2 As shown, a slide 6 is installed on one side of the fixed frame 2 and the movable frame 4, and a slidable tightening adjustment mechanism 7 is installed on the slide 6. The entire tightening adjustment mechanism 7 is also a DDK electric servo tightening machine. After the slide 6 is adjusted to correspond to the position of the transverse tie rod, the length adjustment of the tie rods on both sides of the transverse tie rod can be automatically completed. The rotation operation is adjusted by the controller in the control console 24, and the controller also needs to receive the primary adjustment signal or the secondary adjustment signal sent by the analog data analysis unit before controlling the tightening adjustment mechanism 7.

[0038] Embodiment 2: If a more accurate toe adjustment parameter value is not obtained, the present invention also simulates the rotation of the wheel disc and measures the deflection tendency of the wheel disc toe value under load, thereby performing reverse adjustment to ensure that the next toe adjustment time is extended;

[0039] like Figure 2 As shown, a transmission box 9 is installed on one side of the turntable 8. Figure 3 As shown, a rotating clamping mechanism 10 is movably connected to the inner wall of the turntable 8, and the arc-shaped clamping plate 106 on the rotating clamping mechanism 10 and the symmetrically arranged special-shaped wheel 12 on the turntable 8 are not on the same section plane, so the rotation of the housing 101 will not be blocked by the special-shaped wheel 12;

[0040] The structure of the special-shaped wheel 12 is similar to a half Tai Chi pattern. The special-shaped wheels 12 rotate in the same direction at the same time to lift the height of the placed wheel disc, so that the wheel discs of different diameters can be clamped by the arc-shaped clamping plates 106 on both sides. For the rotation adjustment of the special-shaped disc, a motor 11 is installed on the entire turntable 8. The output end of the motor 11 is connected to the gear on the special-shaped wheel 12 through a toothed chain, thereby driving the special-shaped wheels 12 on both sides to rotate simultaneously;

[0041] When the special-shaped wheel 12, the support rod 3 and the lifting block 5 limit the three positions of the axle at the same time, the axle can be fixed on the top of the placement plate 1, and then the wheel disc on one side of the axle needs to be driven to rotate, such as Figure 3 and Figure 4 As shown, one side of the slide groove 104 of the housing 101 is symmetrically slidably connected with an arc-shaped clamping plate 106, and the inner wall of the arc-shaped clamping plate 106 is fixed with a rubber block by adhesion to increase the friction between the wheel disc and the arc-shaped clamping plate 106. After the arc-shaped clamping plate 106 clamps both sides of the wheel disc, it is necessary to drive the entire housing 101 to rotate;

[0042] The motor 2 13 and the motor 3 16 are fixed to the inner wall of the transmission box 9 by bolts, and the output end of the motor 2 13 is fixed with a transmission shaft 14, and the transmission shaft 14 is provided with teeth, and the single-side gear of the gear set shaft 15 installed in the transmission box 9 is meshed with the transmission shaft 14, so that the gear set shaft 15 can be driven to rotate by the rotation of the motor 2 13, and the other gear of the gear set shaft 15 is meshed with the sliding straight-striped sleeve 18 set on the rotating shaft 17;

[0043] Therefore, after the motor 2 13 rotates, the straight stripe sleeve 18 on the rotating shaft 17 can move forward and backward. Figure 4 It can be seen that one side of the straight stripe sleeve 18 is located in the housing 101 and is meshed with the transmission tooth 103 fixed on the threaded rod 102, and the rotation of the transmission tooth 103 can realize the rotation of the threaded rod 102, thereby driving the sleeve rod 105 threadedly sleeved on the threaded rod 102 to slide left and right, and finally driving the arc clamping plate 106 connected to the sleeve rod 105 to clamp and fix the wheel disc surface on one side of the axle;

[0044] For the wheel disc after clamping, the motor 3 16 located in the transmission box 9 starts to rotate, and a rotating shaft 17 is fixed to the output end of the motor 3 16, and one end of the rotating shaft 17 is fixed to the housing 101. Therefore, after the motor 3 16 works, it can drive the housing 101 to rotate, and the transmission teeth 103 on the entire threaded rod 102 will rotate along the surface of the straight-striped sleeve 18 without affecting each other. After the housing 101 rotates, the wheel disc on one side of the entire axle can also rotate;

[0045] like Figure 6 As shown, when a single wheel of the axle rotates clockwise, the wheel on the other side will rotate in the opposite direction, and the other side of the entire axle is suspended in the movable frame 4. At this time, the electric push rod 20 on the movable frame 4 pushes the placement box 21 to slide, so that two support rods 22 on one side of the placement box 21 contact the bottom of the wheel, and a leather cover 23 is evenly sleeved and slid on the support rod 22. When the entire wheel rotates, the leather cover 23 can also be driven to rotate. However, due to the existence of the toe value, the inward-biased wheel generates partial oblique thrust when it rotates, causing multiple leather covers 23 on the support rod 22 to abut. For this reason, the front-end data acquisition unit in the control console 24 can indirectly obtain the average value ZC of the pressure difference value on both sides of the wheel rotation, the average value ZY of the wheel rotation side slip extrusion, and the wheel rotation side slip value ZL through the movement of the leather cover 23;

[0046] The relevant measuring sensor is installed in the placement box 21. For the obtained comprehensive data of the wheel rotation on one side of the axle, the simulation data analysis unit uses the formula The wheel deflection tendency coefficient Y is obtained, 1, 2 and 3 are located in the proportional coefficient, and 1+2+3=1.223, and is compared with the deflection tendency coefficient threshold y stored in the control console 24:

[0047] When Y>y, a secondary adjustment signal is generated, and the tightening adjustment mechanism 7 is controlled by the controller. When Y≤y, no signal is generated, that is, the toe value of the first axle adjustment is maintained;

[0048] The above dynamic deviation tendency detection of the axle toe value is performed when the toe value measurement after the wheel disc is actively deflected is the same as the first toe value acquisition, that is, after being fixed for two or more times, the axle toe value measurement value remains unchanged. Only then can the deflection tendency detection be performed. When performing the deflection tendency detection, the first toe value measurement verification can also be performed through the average value ZC of the pressure difference value on both sides of the wheel disc rotation to ensure the normality of the angle sensor 19. When the toe value obtained in the second or multiple measurements is different from the first measurement, it is possible to consider performing an overall detection of the axle and the tie rod to see if there is a connection or steering failure problem.

[0049] The obtained secondary adjustment signal indicates that when the wheel discs on both sides of the entire axle rotate, there will be a slight floating deviation, which is usually measured according to the middle value of the axle toe threshold range z, similar to the axle toe threshold range z being between 1-3mm, and the axle toe value is maintained at 2.63mm after the first measurement. Due to the deflection tendency, the axle toe value is maintained at around 2mm by rotating the tie rod on the measuring wheel disc side as much as possible, thereby extending the subsequent axle toe value adjustment time.

[0050] The working process and principle of the present invention are as follows:

[0051] Use the hanging rails and straps to move the axle assembly between the movable frame 4 and the fixed frame 2. The wheel discs on both sides of the axle are respectively located on the turntable 8 and the movable frame 4. The adjustment holes of the tie rods on the axle are kept horizontal by rotating the special-shaped wheels 12 in coordination with the support of the support rods 3 and the lifting blocks 5.

[0052] The angle sensor 19 is started through the control console 24 on the fixed frame 2 to detect the angle of the entire steering turntable 8 abutting the wheel disc, and the toe value is calculated based on the obtained deflection angle and the pre-input wheel disc diameter. Subsequently, the motor 2 13 in the transmission box 9 drives the transmission shaft 14 to rotate, realizing the movement of the straight-striped sleeve 18 on the shaft 17, thereby driving the threaded rod 102 to rotate and close the arc-shaped clamping plate 106 connected to the sleeve rod 105, and after contacting and clamping the wheel disc, the motor 3 drives the shaft 17 to rotate, so that the entire housing 101 carries the single-side wheel disc to rotate, and the wheel disc on the other side of the axle rotates in the opposite direction;

[0053] The electric push rod 20 is used to drive the leather cover 23 on the support rod 22 to contact the surface of the wheel disc. The torque generated by the rotation of the wheel disc causes the leather cover 23 to move toward the side of the support rod 22, so that the relevant data is obtained by using the operating table, and the wheel disc deflection tendency coefficient is calculated. Then, the tightening adjustment mechanism 7 is controlled according to the wheel disc deflection tendency coefficient, and finally the balance test of the entire automobile axle assembly before leaving the factory is completed.

[0054] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the protection scope of the present invention.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A balance detection device for a vehicle axle assembly for factory delivery, comprising a placement plate (1), a movable frame (4) being slidably connected to one side of the top of the placement plate (1), and a fixed frame (2) being fixed to the other side of the top of the placement plate (1) by bolts, characterized in that: A support rod (3) is fixedly installed on the top of the placement plate (1) and on the opposite side of the movable frame (4) and the fixed frame (2), and a lifting block (5) is slidably connected to one side of the movable frame (4); A slide table (6) is fixed to one side of the movable frame (4) and the fixed frame (2) by bolts, a tightening adjustment mechanism (7) is slidably connected to the slide table (6), a turntable (8) is movably connected to the top of the fixed frame (2) by a bearing, a transmission box (9) is fixedly connected to one side of the turntable (8), and an angle sensor (19) is fixed to the bottom of the turntable (8) on the fixed frame (2) by bolts; A special-shaped wheel (12) is movably connected to a bracket symmetrically fixed on the inner wall of the bottom of the turntable (8), a motor 1 (11) is installed on the turntable (8), a fixed gear at the end of the motor 1 (11) and an axial fixed gear of the special-shaped wheel (12) are sleeved via a toothed chain, and a rotating clamp mechanism (10) is movably connected to one side of the turntable (8); The turning and clamping mechanism (10) comprises a shell (101), a threaded rod (102) and an arc-shaped clamping plate (106); the inner wall of one side of the turntable (8) is movably connected to the shell (101), and a slide groove (104) is provided on one side of the shell (101); a sleeve rod (105) is slidably connected in the slide groove (104); one side of the sleeve rod (105) passes through the slide groove (104) and is fixed with the arc-shaped clamping plate (106) by spot welding, and a rubber block is fixed to the inner side of the arc-shaped clamping plate (106) by gluing; the inner walls of both sides of the shell (101) are movably connected to the threaded rod (102) by bearings, and the threads on both sides of the threaded rod (102) are opposite; a transmission tooth (103) is fixedly sleeved on the center of the threaded rod (102), and one side of the two sleeve rods (105) is correspondingly sleeved with the two sides of the threaded rod (102); An electric push rod (20) is fixed to one side of the movable frame (4) by means of bolts, a placement box (21) is fixed to one end of the electric push rod (20) by means of bolts, a support rod (22) is symmetrically mounted on one side of the placement box (21), and one end of the support rod (22) passes through a through slot on the movable frame (4) and is evenly sleeved and slidably provided with a leather cover (23); A control console (24) is installed on one side of the fixing frame (2), and the control console (24) comprises a front-end data acquisition unit, a controller and a simulation data analysis unit; The front-end data acquisition unit is used to obtain comprehensive data of wheel disc rotation on one side of the axle, wherein the comprehensive data of wheel disc rotation on one side of the axle includes an average value ZC of pressure difference between two sides of the wheel disc rotation, an average value ZY of side slip squeeze of the wheel disc rotation, and a side slip value ZL of the wheel disc rotation. The controller is used to adjust the drive assembly on the placement plate (1); The simulation data analysis unit is used to obtain and process the deflection angle of the single-side wheel disc collected by the angle sensor (19) when the axle is initially placed and the toe value calculated by the formula, as well as the comprehensive data of the rotation of the single-side wheel disc of the axle, and specifically includes the following steps: Step 1: Obtain the wheel disc deflection angle and calculate the toe value when the axle is stationary through a formula, and compare it with the toe threshold range z set in the data simulation analysis unit. When the measured value is greater than zmax or less than zmin, a first-level adjustment signal is generated and sent to the controller. The controller adjusts the slide (6) to tighten the adjustment mechanism (7) to adjust the tie rod on the axle until the measured value is within the set threshold range. Step 2: The controller is used to start the second motor (13) in the transmission box (9), driving the arc-shaped clamping plate (106) to clamp the two sides of the wheel disc, and at the same time, the third motor (16) is started to drive the wheel disc on one side to rotate, and the electric push rod (20) on the other side is controlled to push the leather cover (23) on the support rod (22) to contact the bottom of the wheel disc, thereby starting to obtain the comprehensive data of the rotation of the wheel disc on one side of the axle; Step 3: Obtain the wheel deflection trend coefficient Y through calculation and compare it with the stored deflection trend coefficient threshold y: When Y>y, a secondary adjustment signal is generated, and the tightening adjustment mechanism (7) is controlled by a controller. When Y≤y, no signal is generated.

2. A balance detection device for automobile axle assembly according to claim 1, characterized in that: A second motor (13) and a third motor (16) are fixed to the inner wall of one side of the transmission box (9) by bolts, respectively; a transmission shaft (14) is fixedly connected to the output end of the second motor (13), and one end of the transmission shaft (14) is movably connected to the inner wall of the transmission box (9); a rotating shaft (17) is fixed to the output end of the third motor (16), and one end of the rotating shaft (17) passes through one side of the transmission box (9) and is fixed to the inner wall of one side of the housing (101).

3. A balance detection device for automobile axle assembly for delivery according to claim 2, characterized in that: A straight-striped sleeve (18) is slidably mounted on the rotating shaft (17), one side of the straight-striped sleeve (18) passes through the housing (101) and is meshedly connected to the transmission gear (103), and a gear set shaft (15) is movably connected to the inner walls of both sides of the transmission box (9), one side of the gear set shaft (15) is provided with a gear meshedly connected to the straight-striped sleeve (18), and the other side of the gear set shaft (15) is provided with a gear meshedly connected to the transmission shaft (14).

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