Automobile rear wheel toe adjustment tool

Abstract

The present invention provides a vehicle rear wheel toe-in adjustment tool, comprising an adjustment mechanism, wherein the adjustment mechanism comprises a movable adjustment member, and when the adjustment member is movable, the rear suspension longitudinal arm is driven to move left and right relative to the vehicle body floor. The vehicle rear wheel toe-in adjustment tool of the present invention can achieve, through the adjustment member, the displacement of the rear suspension longitudinal arm in the left and right directions when the fixing bolts are loosened, so that the rear suspension longitudinal arm can be adjusted into place at one time, thereby improving the adjustment efficiency of the rear wheel toe-in value.

Description

Technical Field

[0001] The invention relates to the technical field of tooling, and in particular to a tooling for adjusting the toe-in of rear wheels of an automobile. Background Art

[0002] For vehicles equipped with a two-link rear suspension assembly, the rear suspension longitudinal arm is fixed to the vehicle body floor by bolts. The bolt mounting hole on the rear suspension longitudinal arm is an oblong hole. When the rear suspension longitudinal arm is fixed in the left and right directions relative to the vehicle body floor, there is a certain fluctuation, resulting in an unqualified rear wheel toe value.

[0003] In order to solve the problem of unqualified rear wheel toe-in value, it is necessary to loosen the fixing bolts of the rear suspension longitudinal arm fixing seat, move the rear suspension longitudinal arm in the left and right direction, and then adjust the rear wheel toe-in value to the qualified range. After the adjustment, tighten the fixing bolts of the rear suspension longitudinal arm fixing seat. In the process of adjusting and tightening the fixing bolts, the rear suspension longitudinal arm moves due to the friction force of the end face of the fixing bolt, which in turn affects the change of the rear wheel toe-in value, and even exceeds the tolerance. It cannot be adjusted in place at one time, and the fixing bolts need to be frequently disassembled and tightened, affecting production efficiency. Summary of the invention

[0004] In view of this, the present invention aims to provide a vehicle rear wheel toe adjustment tool to improve the adjustment efficiency of the rear wheel toe value.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A toe-in adjustment tool for automobile rear wheels comprises an adjustment mechanism, wherein the adjustment mechanism comprises a movable adjustment member, and when the adjustment member moves, the rear suspension longitudinal arm is driven to move left and right relative to a vehicle body floor.

[0007] Furthermore, the automobile rear wheel toe adjustment tool also includes a three-dimensional moving mechanism and an operating handle.

[0008] Furthermore, the three-dimensional moving mechanism includes an X-direction translation mechanism, a Y-direction translation mechanism and a Z-direction translation mechanism.

[0009] Further, the Z-direction translation mechanism includes a Z-direction slide rail, a Z-direction slider and a Z-direction cylinder, the Z-direction slide rail extends in a vertical direction, the Z-direction slide rail is slidably connected to the Z-direction slider, and the Z-direction slider is fixedly connected to the adjustment mechanism, the Y-direction translation mechanism includes a Y-direction slide rail, a Y-direction slider and a Y-direction servo motor, the Y-direction slide rail extends in a left-right direction, the Y-direction slide rail is slidably connected to the Y-direction slider, and the Y-direction slider is fixedly connected to the Z-direction slide rail, the X-direction translation mechanism includes an X-direction slide rail, an X-direction slider and an X-direction servo motor, the X-direction slide rail extends in a front-to-back direction, the X-direction slide rail is slidably connected to the X-direction slider, and the X-direction slider is fixedly connected to the Y-direction slide rail, and the Z-direction cylinder, the Y-direction servo motor and the X-direction servo motor are all connected to the operating handle.

[0010] Furthermore, the automobile rear wheel toe adjustment tool also includes a stand, and the X-direction slide rail is fixedly connected to the stand.

[0011] Furthermore, the adjustment mechanism includes a support, and three vertical electric tightening guns are arranged on the top of the support, and the electric tightening guns are connected to the operating handle.

[0012] Furthermore, the adjusting part is an eccentric cam, which is fixedly connected to the top of the outer sleeve, and the outer sleeve is key-connected to the inner sleeve. The eccentric cam, the outer sleeve and the inner sleeve are all sleeved on the outside of one of the electric tightening guns, and the inner sleeve is connected to the power mechanism through a transmission mechanism, and the outer sleeve is slidably connected to a lifting plate.

[0013] Furthermore, the power mechanism is an adjustment handle, the transmission mechanism is arranged in a transmission box, the transmission box is fixedly connected to the top of the support, the adjustment handle includes a drive shaft and a handle, the lower end of the drive shaft is fixedly connected to the handle, the upper end of the drive shaft passes through the transmission box, the upper end of the drive shaft is slidably connected to one side of the lifting plate, the lower end of the outer sleeve is provided with an annular groove, the other side of the lifting plate is embedded in the annular groove and slidably cooperates with the annular groove.

[0014] Furthermore, a plurality of vertical guide columns are slidably connected to the middle part of the lifting plate, the bottom ends of the guide columns are fixedly connected to the top of the transmission box, a spring is sleeved on the outside of the guide columns, and the spring is located between the lifting plate and the transmission box. The transmission box is hinged to the middle part of the pressure arm, and a hook corresponding to the lifting plate is fixed on the upper end of the pressure arm.

[0015] Furthermore, the rear suspension longitudinal arm has a fixing seat, and a U-shaped adjustment groove corresponding to the eccentric cam is fixed on the fixing seat.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The automobile rear wheel toe-in adjustment tool of the present invention can achieve the displacement of the rear suspension longitudinal arm in the left and right directions when the fixing bolts are loosened through the adjustment parts, so that the rear suspension longitudinal arm can be adjusted into place at one time, thereby improving the adjustment efficiency of the rear wheel toe-in value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a front view of the automobile rear wheel toe adjustment tool according to an embodiment of the present invention;

[0020] Figure 2 This is an axial view of the automobile rear wheel toe adjustment tooling according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the adjustment mechanism according to an embodiment of the present invention before the eccentric cam rises;

[0022] Figure 4 It is a structural schematic diagram of the adjustment mechanism according to the embodiment of the present invention after the eccentric cam rises;

[0023] Figure 5 This is a schematic diagram of the automobile rear wheel toe adjustment tooling in use according to an embodiment of the present invention;

[0024] Description of reference numerals:

[0025] 1. X-axis translation mechanism; 2. Y-axis translation mechanism; 3. Z-axis translation mechanism; 4. Adjustment mechanism; 5. Operating handle; 6. Stand; 11. X-axis slide rail; 12. X-axis servo motor; 21. Y-axis slide rail; 22. Y-axis slider; 23. Y-axis servo motor; 31. Z-axis cylinder; 41. Support; 42. Electric tightening gun; 43. Eccentric cam; 44. Outer sleeve; 45. Inner sleeve; 46. Transmission box; 47. Adjustment handle; 48. Lifting plate; 49. Pressing arm. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] This embodiment relates to a vehicle rear wheel toe adjustment tool, such as Figure 1 As shown in , the automobile rear wheel toe-in adjustment tool comprises an adjustment mechanism 4, and the adjustment mechanism 4 comprises a movable adjustment member, and when the adjustment member moves, the rear suspension longitudinal arm moves left and right relative to the vehicle body floor.

[0031] Specifically, the adjustment mechanism 4 can be fixedly or movably arranged at the four-wheel inspection station. When the adjustment mechanism 4 is fixed, the adjustment mechanism 4 and the rear suspension longitudinal arm can be aligned by adjusting the position of the vehicle; when the adjustment mechanism 4 is moved, the position of the adjustment mechanism 4 can be adjusted to align with the rear suspension longitudinal arm; the adjustment mechanism 4 includes a movable adjustment part, which is used to adjust the relative position of the rear suspension longitudinal arm and the vehicle body floor. The adjustment part can be an eccentric cam 43 or a moving block or other mechanism that can push the rear suspension longitudinal arm to move.

[0032] like Figure 1 and Figure 2 As shown, the automobile rear wheel toe adjustment tool of the embodiment of the present invention is suitable for cooperating with the rear suspension of the vehicle. The vehicle is driven into the four-wheel detection station by an operator, and the four-wheel detection equipment detects the four-wheel parameters of the vehicle. When the four-wheel detection equipment detects that the rear wheel toe value exceeds a predetermined range, the operator operates the automobile rear wheel toe adjustment tool to make the adjustment member of the adjustment mechanism 4 cooperate with the rear suspension longitudinal arm to realize the left and right movement of the suspension longitudinal arm relative to the vehicle body floor, thereby realizing the adjustment of the automobile rear wheel toe value, which is convenient to operate and efficient.

[0033] like Figure 1 and Figure 2 As shown, further, the automobile rear wheel toe adjustment tooling of the embodiment of the present invention further includes a three-dimensional moving mechanism and an operating handle 5. The operating handle 5 is provided with a control button, and the operating handle 5 is electrically connected to the three-dimensional moving mechanism. When the operator operates the control button, the three-dimensional moving mechanism can be driven to move in the X, Y, and Z directions; the three-dimensional moving mechanism is fixedly connected to the adjustment mechanism 4, and when the three-dimensional moving mechanism moves in the X, Y, and Z directions, the adjustment mechanism 4 can be driven to move synchronously, thereby making the relative position adjustment of the automobile rear wheel toe adjustment tooling and the rear suspension of the vehicle more convenient and quick.

[0034] Specifically, in this embodiment, the adjustment mechanism 4 is connected to the three-dimensional moving mechanism, and the position of the adjustment mechanism 4 in the three-dimensional space is adjusted by the three-dimensional moving mechanism, so that the adjustment mechanism 4 and the rear suspension trailing arm can be aligned. In another feasible specific implementation, the three-dimensional moving mechanism can also be a two-dimensional moving mechanism or a one-dimensional moving mechanism, as long as the movement of the adjustment mechanism 4 can be achieved.

[0035] like Figure 1 and Figure 2 As shown, further, the three-dimensional moving mechanism includes an X-direction translation mechanism 1, a Y-direction translation mechanism 2, and a Z-direction translation mechanism 3. The X-direction translation mechanism 1 can realize the movement of the adjustment mechanism 4 in the X direction (i.e., the front-rear direction of the vehicle), the Y-direction translation mechanism 2 can realize the movement of the adjustment mechanism 4 in the Y direction (i.e., the left-right direction of the vehicle), and the Z-direction translation mechanism 3 can realize the movement of the adjustment mechanism 4 in the Z direction (i.e., the up-down direction of the vehicle), thereby making the adjustment of the adjustment mechanism 4 in the X, Y, and Z directions more convenient. The X-direction translation mechanism 1, the Y-direction translation mechanism 2, and the Z-direction translation mechanism 3 can all adopt conventional translation mechanisms such as cylinders or ball screws.

[0036] Among them, in this embodiment, the X-direction translation mechanism 1 includes an X-direction slide rail 11, an X-direction slider, an X-direction ball screw and an X-direction servo motor 12, the X-direction ball screw is connected to the X-direction servo motor 12, the X-direction ball screw is used to convert the rotational motion of the X-direction servo motor 12 into the linear motion of the X-direction slider, the X-direction slide rail 11 extends along the front and rear direction of the vehicle, the X-direction slide rail 11 is slidably connected to the X-direction slider, and the X-direction slider is fixedly connected to the Y-direction slide rail; the Y-direction translation mechanism 2 includes a Y-direction slide rail 21, a Y-direction slider 22, a Y-direction ball screw and a Y-direction servo motor 23, the Y-direction ball screw is connected to the Y-direction servo motor 23, the Y-direction ball screw is used to convert the rotational motion of the Y-direction servo motor 23 into the linear motion of the Y-direction slider 22, the Y-direction slide rail 21 extends along the left and right direction of the vehicle, the Y-direction slide rail 21 is slidably connected to the Y-direction slider 22, and the Y-direction slider 22 is fixedly connected to the Z-direction slide rail. The Z-direction translation mechanism 3 includes a Z-direction slide rail, a Z-direction slider and a Z-direction cylinder 31. The cylinder barrel of the Z-direction cylinder 31 is fixedly connected to the Z-direction slide rail, and the piston rod of the Z-direction cylinder 31 is fixedly connected to the Z-direction slider. The Z-direction cylinder 31 is used to push the Z-direction slider to move up and down. The Z-direction slide rail extends along the vertical direction of the vehicle. The Z-direction slide rail is slidably connected to the Z-direction slider, and the Z-direction slider is fixedly connected to the adjustment mechanism 4.

[0037] The X-direction translation mechanism 1 and the Y-direction translation mechanism 2 are each provided with a locking mechanism, which may be an electromagnetic brake, and is used to lock the position of the corresponding X-direction slider and the Y-direction slider 22 to prevent the X-direction slider and the Y-direction slider 22 from being forced to move after being moved into position. The Z-direction translation mechanism 3 can lock the position of the Z-direction slider by closing the electromagnetic valve on the inlet and outlet pipes. Of course, in order to improve the locking effect, the Z-direction translation mechanism 3 can also be specially provided with a mechanical locking mechanism to lock the position of the Z-direction slider.

[0038] The control buttons of the operating handle 5 are electrically connected to the X-direction servo motor 12, the Y-direction servo motor 23 and the solenoid valve. The solenoid valve is arranged on the inlet and exhaust pipes of the Z-direction cylinder 31. By operating the control buttons, the corresponding X-direction servo motor 12, the Y-direction servo motor 23 and the Z-direction cylinder 31 can be controlled to move, thereby driving the adjustment mechanism 4 to move in the X-direction, Y-direction and Z-direction. The operation is convenient, saving time and effort.

[0039] like Figure 5 As shown, further, the automobile rear wheel toe adjustment tooling of the embodiment of the present invention further includes a stand 6, and the X-direction slide rail 11 is fixedly connected to the stand 6. The stand 6 is in an inverted "concave" shape as a whole, and the bottom support of the stand 6 is fixed on the ground, so that the X-direction slide rail 11 can be stably supported, so that the automobile rear wheel toe adjustment tooling has high reliability. In another feasible specific implementation, the toe adjustment tooling of the present invention may not include the stand 6, and can be directly fixed on the ground, or fixed on other objects suitable for support and fixation, and the present invention does not limit this.

[0040] like Figure 3 and Figure 4 As shown, further, the adjustment mechanism 4 includes a support 41, an electric tightening gun 42, an adjustment member, an outer sleeve 44, an inner sleeve 45, a transmission box 46, a transmission mechanism, a power mechanism, a lifting plate 48 and a pressure arm 49. The bottom of the support 41 is fixedly connected to the Z-direction slider, and three electric tightening guns 42 arranged in a triangle are arranged on the top of the base. The electric tightening guns 42 are vertically arranged and electrically connected to the operating handle. The three electric tightening guns 42 cooperate with the fixing bolts on the fixing seat of the rear suspension longitudinal arm to achieve synchronous loosening and tightening of the fixing bolts of the fixing seat. Such an arrangement makes the automobile rear wheel toe adjustment tool of the present invention more convenient and quick when adjusting the rear wheel toe value, and improves the adjustment efficiency. A control button is provided on the operating handle to control the action of the electric tightening gun 42. The control buttons are divided into moving buttons, loosening buttons, tightening buttons and end buttons. The moving buttons are used to control the movement of the three-dimensional moving mechanism, thereby realizing the movement of the adjustment mechanism 4 in the three directions of X, Y and Z. The loosening buttons are used to control the three electric tightening guns 42 to loosen the fixing bolts synchronously. The tightening buttons are used to control the three electric tightening guns 42 to tighten the fixing bolts synchronously. The end button is used to reset the adjustment mechanism 4.

[0041] Specifically, in this embodiment, the adjustment member is an eccentric cam 43, which is fixedly connected to the top of the outer sleeve 44. A key is fixed to the inner wall of the lower end of the outer sleeve 44. The upper end of the inner sleeve 45 is sleeved in the outer sleeve 44. A key slot is provided at the upper end of the inner sleeve 45, and the key and the key slot are slidably matched. Through the key and the key slot, the outer sleeve 44 and the inner sleeve 45 can rotate synchronously and slide relative to each other. The eccentric cam 43, the outer sleeve 44 and the inner sleeve 45 are all sleeved on the outside of one of the electric tightening guns 42. The eccentric cam 43 is coaxial with the electric tightening gun 42 but does not interfere with each other. The inner sleeve 45 is connected to the power mechanism through a transmission mechanism. The transmission mechanism can be a belt transmission mechanism or other mechanisms suitable for transmission. The present invention does not limit this. In this embodiment, the transmission mechanism is a belt transmission mechanism. The belt transmission mechanism includes a driving wheel, a driven wheel and a belt. The driven wheel is fixed at the lower end of the inner sleeve 45. The driving wheel is connected to the power mechanism. When the power mechanism is activated, the driving wheel is driven to rotate, and the driving wheel drives the driven wheel to rotate. The driven wheel drives the inner sleeve 45 and the outer sleeve 44 to rotate synchronously, thereby realizing the rotation of the eccentric cam 43. The power mechanism can be electric or manual. The electric method can be realized by a motor, and the manual method can be realized by an adjustment handle 47. The outer sleeve 44 is slidably connected with a lifting plate 48, and the lifting plate 48 is used to drive the outer sleeve 44 to rise and fall, thereby realizing the lifting and falling of the eccentric cam 43.

[0042] Further, in this embodiment, the power mechanism is an adjustment handle 47, the belt transmission mechanism is arranged in the transmission box 46, the transmission box 46 is fixedly connected to the top of the support 41, the adjustment handle 47 includes a drive shaft and a handle, the lower end of the drive shaft is fixedly connected to the handle, the handle and the drive shaft together form an inverted T-shaped structure, the upper end of the drive shaft passes through the transmission box 46, and a spline is arranged on the drive shaft, and a spline groove that slides with the spline is opened at the center of the driving wheel. Through the spline and the spline groove, the drive shaft and the driving wheel can rotate synchronously and slide relatively. When in use, the rotation of the eccentric cam 43 can be conveniently driven by rotating the adjustment handle 47. The upper end of the drive shaft is fixedly connected to one side of the lifting plate 48, and the lower end of the outer sleeve 44 is provided with an annular groove, and the other side of the lifting plate 48 is embedded in the annular groove, and the lifting plate 48 slides with the annular groove. By setting the annular groove and the lifting plate 48, the lifting plate 48 can drive the outer sleeve 44 to rise and fall without interfering with the rotation of the outer sleeve 44. The lifting and lowering of the lifting plate 48 is realized manually.

[0043] Furthermore, the middle of the lifting plate 48 is slidably connected with a plurality of vertical guide posts, the bottom ends of the guide posts are fixedly connected to the top of the transmission box 46, and the upper ends of the guide posts are provided with limited protrusions to prevent the lifting plate 48 from slipping out of the guide posts when it moves upward. The outer sleeve of the guide post is provided with a spring, and the spring is located between the lifting plate 48 and the transmission box 46. The transmission box 46 is hinged to the middle of the pressure arm 49, and the upper end of the pressure arm 49 is fixed with a hook corresponding to the lifting plate 48. When the lifting plate 48 is manually pressed down to the right position, the pressure arm 49 can be pulled so that its hook hooks the lifting plate 48 to prevent the lifting plate 48 from moving upward. When the hook is separated from the lifting plate 48, the lifting plate 48 automatically moves upward under the elastic force of the spring, thereby driving the eccentric cam 43 to move upward.

[0044] Specifically, the rear suspension longitudinal arm has a fixed seat, and the fixed seat is fixedly connected to the vehicle body floor by fixing bolts. The bolt mounting hole on the fixed seat is an oblong hole. After the fixing bolts are loosened, the relative position of the fixed seat and the vehicle body floor can be adjusted. The electric tightening gun 42 is used to loosen and tighten the fixing bolts. In order to ensure that the eccentric cam 43 can push the rear suspension longitudinal arm to move when it rotates, a U-shaped adjustment groove corresponding to the eccentric cam 43 is also fixed on the fixed seat. When the eccentric cam 43 rotates, the inner groove wall of the U-shaped adjustment groove is squeezed, thereby pushing the rear suspension longitudinal arm to move left and right relative to the vehicle body floor. In another feasible specific implementation, if the adjustment member is a moving block, two corresponding baffles arranged at intervals are fixed on the fixed seat or other positions of the rear suspension longitudinal arm, and the upper end of the moving block is embedded between the two baffles. The moving block moves left and right under the action of an external force (such as a cylinder, an electric cylinder, etc.), thereby pushing the rear suspension longitudinal arm to move.

[0045] like Figure 5 As shown, since the rear suspension longitudinal arm has two fixing seats, two rear wheel toe adjustment tools are also provided accordingly.

[0046] When used specifically:

[0047] 1) The driver drives the vehicle into the four-wheel inspection station, and the four-wheel inspection equipment inspects the parameters of the four wheels of the vehicle;

[0048] 2) When the four-wheel detection device detects that the toe value of the rear wheel is out of tolerance, the operator operates the moving button on the operating handle 5 to realize the movement of the adjustment mechanism 4 in the three directions of X, Y, and Z, so that the electric tightening gun 42 is lifted to engage with the fixing bolt; (Note: In this process, before the electric tightening gun 42 is docked with the fixing bolt, the electromagnetic brakes on the X-direction translation mechanism 1 and the Y-direction translation mechanism 2 are in the open state to facilitate successful docking. After successful docking, the electromagnetic brakes are locked)

[0049] 3) After the electric tightening gun 42 is engaged with the fixing bolts, the operator operates the loosening button on the operating handle 5, and the electric tightening gun 42 automatically loosens the three fixing bolts by 2 turns to separate the rear suspension bracket from the vehicle body floor, thereby facilitating the movement of the rear suspension bracket;

[0050] 4) The operator pulls the pressing arm 49 to separate the hook from the lifting plate 48, and the eccentric cam 43 rises along the Z direction and extends into the U-shaped adjustment groove. The operator manually turns the adjustment handle 47 to drive the eccentric cam 43 to rotate, so that the eccentric cam 43 squeezes the inner groove wall of the U-shaped adjustment groove, thereby moving the rear suspension bracket along the Y direction, and adjusting the rear wheel toe value to the qualified range;

[0051] 5) After the rear wheel toe value is adjusted to a qualified value, the operator operates the tightening button on the operating handle 5, and the electric tightening gun 42 automatically and simultaneously tightens the three fixing bolts to the specified torque (the eccentric cam 43 can prevent the rear suspension bracket from moving during the tightening process). The operator presses the lifting plate 48 downward along the Z direction to make the eccentric cam 43 fall to the initial position, and pulls the pressing arm 49 to hook the hook onto the lifting plate 48;

[0052] 6) After the rear wheel toe value is adjusted to a qualified level and the torque is tightened, the operator operates the end button on the operating handle 5, and the adjustment mechanism 4 automatically returns to the initial position along the X, Y, and Z directions, waiting for the next process.

[0053] The automobile rear wheel toe adjustment tooling described in the present invention adopts a three-dimensional moving mechanism, an eccentric cam and three electric tightening guns in combination to realize a one-stop operation of "loosening the fixing bolts - adjusting the rear wheel toe value - tightening the fixing bolts" for the rear suspension longitudinal arm, so as to achieve a qualified rear wheel toe value adjustment at one time; and the three electric tightening guns can realize the loosening and tightening of the fixing bolts at the same time, thereby improving work efficiency and reducing labor intensity; the eccentric cam 43 can be raised and lowered along the Z direction, and at the moment of rotation, it can realize the displacement of the rear suspension longitudinal arm in the left and right directions when the fixing bolts are loosened, so that it can be adjusted in place at one time, thereby improving the adjustment efficiency of the rear wheel toe value.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Automobile rear wheel toe adjustment tool, characterized by: The invention comprises an adjustment mechanism, wherein the adjustment mechanism comprises a movable adjustment member, wherein the adjustment member drives the rear suspension longitudinal arm to move left and right relative to the vehicle body floor when the adjustment member moves. The automobile rear wheel toe adjustment tool also comprises a three-dimensional moving mechanism and an operating handle. The adjustment mechanism comprises a support, wherein three vertical electric tightening guns are arranged on the top of the support, wherein the electric tightening guns are connected to the operating handle. The adjustment member is an eccentric cam, wherein the eccentric cam is fixedly connected to the top end of the outer sleeve, wherein the outer sleeve key is connected to the inner sleeve, wherein the eccentric cam, the outer sleeve and the inner sleeve are all sleeved on the outside of one of the electric tightening guns, wherein the inner sleeve The cylinder is connected to a power mechanism through a transmission mechanism, and the outer sleeve is slidably connected to a lifting plate. The power mechanism is an adjustment handle. The transmission mechanism is arranged in a transmission box, and the transmission box is fixedly connected to the top of the support. The adjustment handle includes a driving shaft and a handle. The lower end of the driving shaft is fixedly connected to the handle, and the upper end of the driving shaft passes through the transmission box, and the driving shaft is key-connected to the transmission mechanism. The upper end of the driving shaft is fixedly connected to one side of the lifting plate, and an annular groove is provided at the lower end of the outer sleeve, and the other side of the lifting plate is embedded in the annular groove, and the lifting plate slides in cooperation with the annular groove.

2. The automobile rear wheel toe adjustment tool according to claim 1, characterized in that: The three-dimensional moving mechanism includes an X-direction translation mechanism, a Y-direction translation mechanism and a Z-direction translation mechanism.

3. The automobile rear wheel toe adjustment tool according to claim 2 is characterized in that: The Z-direction translation mechanism comprises a Z-direction slide rail, a Z-direction slider and a Z-direction cylinder, the Z-direction slide rail extends in a vertical direction, the Z-direction slide rail is slidably connected to the Z-direction slider, and the Z-direction slider is fixedly connected to the adjustment mechanism, the Y-direction translation mechanism comprises a Y-direction slide rail, a Y-direction slider and a Y-direction servo motor, the Y-direction slide rail extends in a left-right direction, the Y-direction slide rail is slidably connected to the Y-direction slider, and the Y-direction slider is fixedly connected to the Z-direction slide rail, the X-direction translation mechanism comprises an X-direction slide rail, an X-direction slider and an X-direction servo motor, the X-direction slide rail extends in a front-back direction, the X-direction slide rail is slidably connected to the X-direction slider, and the X-direction slider is fixedly connected to the Y-direction slide rail, and the Z-direction cylinder, the Y-direction servo motor and the X-direction servo motor are all connected to the operating handle.

4. The automobile rear wheel toe adjustment tool according to claim 3 is characterized in that: The automobile rear wheel toe-in adjustment tool also includes a stand, and the X-direction slide rail is fixedly connected to the stand.

5. The automobile rear wheel toe adjustment tool according to claim 1, characterized in that: The middle part of the lifting plate is slidably connected with a plurality of vertical guide columns, the bottom ends of the guide columns are fixedly connected to the top of the transmission box, the outer sleeve of the guide columns is provided with a spring, and the spring is located between the lifting plate and the transmission box. The transmission box is hinged to the middle part of the pressure arm, and the upper end of the pressure arm is fixedly provided with a hook corresponding to the lifting plate.

6. The automobile rear wheel toe adjustment tool according to claim 1, characterized in that: The rear suspension trailing arm has a fixing seat, and a U-shaped adjusting groove corresponding to the eccentric cam is fixed on the fixing seat.

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