An angle adjustment structure for assembling a knuckle bushing

Abstract

The utility model provides an angle adjusting structure of assembly knuckle bush, include: fixed plate is provided with the installation groove for limiting knuckle bush, angle adjusting lever, one end is connected in the carousel through the drive motor drive, the other end is placed in knuckle bush, and angle adjusting lever is used for driving knuckle bush rotation to adjust angle, rotation transmission part, set up in the bottom of fixed plate, nest in the outer circumferential surface of angle adjusting lever, and when rotation transmission part and the outer surface of knuckle bush are in contact, the rotation movement of angle adjusting lever is stably transmitted to knuckle bush. The angle adjusting structure of assembly knuckle bush proposed in the utility model solves the problem of the non - conformity of bush angle with drawing requirement in traditional assembly mode, the unstable problem of bush angle adjustment process, improves the stability and accuracy of bush angle adjustment.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts assembly technology, and in particular to an angle adjustment structure for assembling steering knuckle bushings. Background Technology

[0002] The steering knuckle is one of the core components of a car's steering axle. Its core function is to bear the load of the front of the car, support and drive the front wheels to rotate around the kingpin, thereby achieving steering and ensuring stable driving and sensitive transmission of driving direction. Because the steering knuckle needs to withstand varying impact loads during car operation, its structural strength requirements are extremely high.

[0003] As a key component that mates with the steering knuckle, the steering knuckle bushing directly affects the stability of vehicle handling, driving safety, and the accuracy of the driving trajectory, making it a vital part for ensuring normal vehicle operation. Given the importance of the steering knuckle bushing, the stability and precision of its assembly process, especially the accuracy of the assembly angles, are crucial to the overall performance of the vehicle.

[0004] However, in the current steering knuckle bushing assembly production process, the bushing angle is positioned using traditional methods such as manual adjustment or simple tooling. These methods have significant drawbacks: firstly, manual adjustment relies on operator experience, making it difficult to ensure the bushing angle strictly conforms to the design drawings, and easily leading to angle deviations; secondly, simple tooling lacks stable power transmission and precise angle control structures, resulting in poor assembly process stability and low bushing assembly consistency during mass production, which may affect vehicle handling performance and pose safety hazards.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The present invention addresses the shortcomings of the aforementioned technologies by providing an angle adjustment structure for assembling steering knuckle bushings. This structure solves the problems of bushing angles not conforming to drawing requirements and unstable bushing angle adjustment processes in traditional assembly methods, thereby improving the stability and accuracy of bushing angle adjustment.

[0007] The specific technical solution provided by this utility model is as follows:

[0008] An angle adjustment structure for assembling a steering knuckle bushing includes:

[0009] The mounting plate is provided with a mounting groove for limiting the steering knuckle bushing;

[0010] An angle adjustment rod is connected at one end to a turntable driven by a drive motor, and at the other end is placed inside the steering knuckle bushing. The angle adjustment rod is used to rotate the steering knuckle bushing to adjust the angle.

[0011] The rotary transmission component is located at the bottom of the fixed plate and nested on the outer circumference of the angle adjustment rod. When the rotary transmission component abuts against the outer surface of the steering knuckle bushing, it smoothly transmits the rotational movement of the angle adjustment rod to the steering knuckle bushing.

[0012] Furthermore, a pre-set gap is provided between the angle adjustment rod and the steering knuckle bushing to avoid wear and damage to the steering knuckle bushing.

[0013] Furthermore, the angle adjustment rod is also connected to a lifting cylinder for adjusting the reserved spacing in the longitudinal direction. The lifting cylinder is located at the bottom of the turntable, and a piston rod is installed on the lifting cylinder. One end of the piston rod is connected to the turntable, and the other end is connected to the drive motor.

[0014] Furthermore, the lifting cylinder is connected to an external air system via an air pipe. The air system is equipped with a solenoid valve to control the extension and retraction of the lifting cylinder.

[0015] Furthermore, the central axis of the turntable is the rotational central axis of the angle adjustment rod, which coincides with the rotational central axis of the drive motor output shaft and is collinear with the central axis of the mounting groove of the fixed plate.

[0016] Furthermore, the rotary transmission component includes a roller ball bearing, which can be fitted into the bottom of the fixed plate; under the sequential operation of the lifting cylinder and the drive motor, the roller ball bearing abuts against the angle adjusting rod and generates rolling friction transmission.

[0017] Furthermore, the drive motor is mounted on the motor support plate, and the lifting cylinder is mounted on the cylinder support plate. The motor support plate has a first transmission hole, and the cylinder support plate has a second transmission hole. The output shaft of the drive motor passes through the first transmission hole and connects to the lifting cylinder. The piston rod of the lifting cylinder passes through the second transmission hole and connects to the turntable, which can drive the turntable to move up and down while rotating around the piston rod.

[0018] Furthermore, the drive motor is a servo motor, which is electrically or signal-connected to an external control system. The control system is used to preset and control the rotation angle and speed of the servo motor.

[0019] Furthermore, the shape of the mounting groove matches the shape of the steering knuckle bushing, and the depth of the mounting groove is greater than 1 / 3 of the height of the steering knuckle bushing. The steering knuckle bushing can rotate around the central axis of the mounting groove and along the groove wall within the mounting groove.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] (1) This utility model adopts a mechanical angle adjustment structure to replace manual adjustment or simple tooling assistance, avoiding the influence of operator experience differences on assembly accuracy. By restricting the non-rotational degree of freedom of the steering knuckle bushing through the fixed plate, the rotary transmission component cooperates with the angle adjustment rod. Through the rotary transmission component, the rotational motion of the angle adjustment rod is converted into a smooth drive for the steering knuckle bushing, ensuring reliable transmission of rotational power, improving the stability and accuracy of angle adjustment, and solving the problems of steering knuckle bushing angle not meeting drawing requirements and unstable bushing angle adjustment process in traditional assembly methods.

[0022] The rotary transmission component acts as a power transmission intermediary between the angle adjustment rod and the steering knuckle bushing, reducing friction between the angle adjustment rod and the steering knuckle bushing and preventing wear on the surface of the steering shaft bushing. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the present invention;

[0024] Figure 2 This is another overall schematic diagram of the present invention;

[0025] Figure 3 This is a left-side view of the present invention;

[0026] Figure 4 This is a right-side view of the present invention;

[0027] Figure 5 This is a schematic diagram of the rotary transmission component in this utility model.

[0028] Marked in the image:

[0029] 1. Fixing plate; 11. Mounting slot; 2. Angle adjustment rod; 3. Rotary transmission component; 4. Drive motor; 5. Lifting cylinder; 6. Turntable; 7. Steering knuckle bushing; 8. Motor support plate frame; 9. Cylinder support plate frame. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] As attached Figure 1-5 As shown, an angle adjustment structure for assembling a steering knuckle bushing 7 includes:

[0034] The fixing plate 1 is provided with a mounting groove 11 for limiting the steering knuckle bushing 7;

[0035] Angle adjustment rod 2 is connected at one end to turntable 6 driven by drive motor 4, and the other end is placed inside steering knuckle bushing 7. Angle adjustment rod 2 is used to drive steering knuckle bushing 7 to rotate in order to adjust the angle.

[0036] The rotary transmission component 3 is located at the bottom of the fixed plate 1 and is nested on the outer circumferential surface of the angle adjustment rod 2. When the rotary transmission component 3 abuts against the outer surface of the steering knuckle bushing 7, it smoothly transmits the rotational movement of the angle adjustment rod 2 to the steering knuckle bushing 7.

[0037] Obviously, the angle adjustment structure in this application adopts a mechanical angle adjustment structure to replace manual adjustment or simple tooling assistance, avoiding the influence of operator experience differences on assembly accuracy. By restricting the non-rotational degree of freedom of the steering knuckle bushing 7 through the fixed plate 1, the rotary transmission component 3 cooperates with the angle adjustment rod 2. The rotary transmission component 3 realizes the conversion of the rotational motion of the angle adjustment rod 2 into a smooth drive for the steering knuckle bushing 7, ensuring the reliable transmission of rotational power and improving the stability and accuracy of angle adjustment.

[0038] Furthermore, the shape of the mounting groove 11 matches the shape of the steering knuckle bushing 7, and the depth of the mounting groove 11 is greater than 1 / 3 of the height of the steering knuckle bushing 7. The steering knuckle bushing 7 can rotate around the central axis of the groove and along the groove wall of the mounting groove 11 within the mounting groove 11.

[0039] By setting the mounting groove 11 to limit the steering knuckle bushing 7, the degree of freedom of the steering knuckle bushing 7 in non-rotational directions (such as up and down, left and right) can be effectively constrained, preventing the steering knuckle bushing 7 from shifting or tilting during angle adjustment, providing a stable reference for subsequent precise angle adjustment, and solving the problem of angle deviation caused by loose positioning of the steering knuckle bushing 7 in traditional tooling.

[0040] The specific structural design of the mounting groove 11 ensures that the steering knuckle bushing 7 has sufficient support depth within the mounting groove 11, preventing the steering knuckle bushing 7 from becoming unstable during rotational adjustment. At the same time, it preserves the rotational freedom of the steering knuckle bushing 7 around the central axis of the groove, taking into account both limiting stability and rotational flexibility, thus solving the problem that shallow groove positioning can easily lead to the bushing rolling off.

[0041] As an embodiment of this application, the angle adjustment rod 2 and the steering knuckle bushing 7 are provided with a reserved gap. The reserved gap can prevent the adjustment rod from making direct hard contact with the steering knuckle bushing 7 in the initial state, prevent damage to the inner wall of the bushing or the surface of the adjustment rod due to collision and compression in the early stage of assembly, and extend the service life of the components.

[0042] Furthermore, the angle adjustment rod 2 is also connected to a lifting cylinder 5 for adjusting the reserved spacing in the longitudinal direction. The lifting cylinder 5 is located at the bottom of the turntable 6, and a piston rod is provided on the lifting cylinder 5. One end of the piston rod is connected to the turntable 6, and the other end is connected to the drive motor 4.

[0043] The lifting cylinder 5 replaces the traditional manual alignment method, automating the spacing adjustment, reducing the labor intensity of operators, avoiding errors from manual alignment, and improving the accuracy of spacing adjustment. On the other hand, when the lifting cylinder 5 extends or retracts, it can simultaneously drive the drive motor 4, turntable 6, and angle adjustment rod 2 to rise and fall, ensuring the relative position of the power transmission components (drive motor 4 and turntable 6) is stable during the spacing adjustment process, avoiding transmission failure caused by component misalignment, and further improving the stability of angle adjustment.

[0044] As an embodiment of this application, the lifting cylinder 5 is connected to an external air system via an air pipe. The air system is equipped with a solenoid valve to control the extension and retraction of the lifting cylinder 5. On one hand, the solenoid valve can precisely control the extension and retraction speed and stroke of the lifting cylinder 5, ensuring that the reserved distance between the angle adjustment rod 2 and the steering knuckle bushing 7 in the longitudinal direction can be accurately adjusted to a preset value, providing a prerequisite for the subsequent precise adjustment of the bushing angle. On the other hand, the air system controlled by the solenoid valve has a fast response speed, allowing for rapid switching between lifting and lowering actions of the lifting cylinder 5.

[0045] As an example of this application, see the attached document. Figure 5As shown, the rotary transmission component 3 includes a roller ball bearing, which can be fitted into the bottom of the fixed plate 1; under the sequential operation of the lifting cylinder 5 and the drive motor 4, the roller ball bearing and the angle adjustment rod 2 are in contact and connected, and rolling friction transmission occurs.

[0046] The rolling friction characteristics of roller ball bearings can reduce energy loss during power transmission, ensuring that the rotational power output by the motor can be efficiently transmitted to the bushing, making the bushing angle adjustment response more sensitive; at the same time, the structural design of the bearing being fitted into the bottom of the fixed plate 1 can ensure the installation stability of the transmission components, avoid deviation during transmission, and improve the consistency of angle adjustment.

[0047] Furthermore, the drive motor 4 is mounted on the motor support plate 8, and the lifting cylinder 5 is mounted on the cylinder support plate 9. The motor support plate 8 is provided with a first transmission hole, and the cylinder support plate 9 is provided with a second transmission hole. The output shaft of the drive motor 4 passes through the first transmission hole and connects to the lifting cylinder 5. The piston rod of the lifting cylinder 5 passes through the second transmission hole and connects to the turntable 6, which can drive the turntable 6 to move up and down while rotating around the piston rod.

[0048] The support plate frame design ensures the relative position stability of the drive motor 4 and the lifting cylinder 5 during tooling operation, preventing component loosening due to vibration or stress. Simultaneously, the first and second transmission holes on the support plate frame guide and limit the output shaft of the drive motor 4 and the piston rod of the lifting cylinder 5, ensuring coaxiality and further eliminating transmission misalignment errors. The modular support structure facilitates subsequent disassembly, maintenance, and component replacement of the tooling. For example, in case of a failure in the drive motor 4 or the lifting cylinder 5, they can be disassembled and maintained individually, reducing tooling maintenance costs and downtime.

[0049] Furthermore, the drive motor 4 is a servo motor, which is electrically or signal-connected to an external control system. The control system is used to preset the rotation angle and speed of the servo motor. By preset parameters through the control system, one-click operation can be achieved to adjust the angle of the steering knuckle bushing 7, without the need for manual intervention in setting the angle or speed. This avoids inconsistencies in batch assembly caused by differences in operator experience, ensures a high degree of uniformity in the assembly angle of the same batch of steering knuckle bushings 7, and improves the overall quality stability of automotive parts assembly.

[0050] In various embodiments of this application, the central axis of the turntable 6 is the rotational central axis of the angle adjustment rod 2, which coincides with the rotational central axis of the output shaft of the drive motor 4 and is collinear with the central axis of the mounting groove 11 of the fixing plate 1.

[0051] The above-mentioned collinear design of the structural axes ensures that the rotation reference is completely consistent throughout the entire process of the rotational power output from the motor to the rotation of the steering knuckle bushing 7, avoiding eccentric rotation caused by axis offset (such as wobbling of the adjusting rod or tilting rotation of the bushing), and controlling the angle adjustment error of the steering knuckle bushing 7 to a very small range. This solves the problem of the adjustment angle not conforming to the drawings due to axis misalignment in traditional tooling.

[0052] During installation: the fixing plate 1 of the steering knuckle bushing 7 is horizontally fixed in the preset position on the assembly workbench, ensuring the orientation of the mounting slot 11 so that the steering knuckle bushing 7 can be smoothly installed into the mounting slot 11; the drive motor 4 is fixed below the motor support plate 8, with the output shaft of the drive motor 4 facing upward and connected to the turntable 6 through a coupling; the angle adjustment rod 2 is vertically fixed to the upper surface of the turntable 6, and the central axis of the turntable 6 is the rotation center axis of the angle adjustment rod 2, which corresponds to the central axis of the positioning slot of the bushing fixing plate 1; the rotary transmission component 3 is nested and installed on the outer circumference of the angle adjustment rod 2; the lifting cylinder 5 is vertically fixed below the cylinder support plate 9, and the top of its piston rod is fixedly connected to the housing of the servo motor, ensuring that the lifting cylinder 5 can drive the servo motor and the angle adjustment rod 2 to rise and fall synchronously when it extends and retracts.

[0053] The working process of the angle adjustment structure for the assembled steering knuckle bushing 7 after installation is as follows:

[0054] Start the lifting cylinder 5. The piston rod of the lifting cylinder 5 extends upward, driving the drive motor 4, turntable 6 and angle adjustment rod 2 to rise as a whole. During the rising process, observe the contact state between the rotary transmission component 3 and the steering knuckle bushing 7. When the rotary transmission component 3 and the outer surface of the steering knuckle bushing 7 are in close contact (without obvious gap and without excessive compression), stop the operation of the lifting cylinder 5.

[0055] According to the bushing fitting angle required by the drawing, the control system sends a rotation command to the drive motor 4. The drive motor 4 drives the turntable 6 to rotate, and the turntable 6 drives the angle adjustment rod 2 to rotate synchronously. The angle adjustment rod 2 transmits the rotation power to the steering knuckle bushing 7 through the rotation transmission component 3, so that the steering knuckle bushing 7 rotates around its own axis.

[0056] When the drive motor 4 rotates to the preset angle (i.e. the bushing fitting angle required by the drawing), the drive motor 4 automatically stops, completing the angle adjustment of the steering knuckle bushing 7.

[0057] After the angle of the steering knuckle bushing 7 is adjusted, the lifting cylinder 5 is activated, and the piston rod retracts downward, driving the servo motor, angle adjustment rod 2, and rotating power component to descend until the rotating power component is completely disengaged from the bushing. At this point, the angle-adjusted steering knuckle bushing 7 can be removed from the fixed plate 1 by a robotic arm or manually and sent to the subsequent process position.

[0058] Compared with the prior art, the embodiments proposed in this application have the following beneficial technical effects:

[0059] This utility model adopts a mechanical angle adjustment structure to replace manual adjustment or simple tooling assistance, avoiding the influence of operator experience differences on assembly accuracy. By restricting the non-rotational degree of freedom of the steering knuckle bushing 7 through the fixed plate 1, the rotary transmission component 3 cooperates with the angle adjustment rod 2. The rotary transmission component 3 realizes the conversion of the rotational motion of the angle adjustment rod 2 into a smooth drive for the steering knuckle bushing 7, ensuring reliable transmission of rotational power, improving the stability and accuracy of angle adjustment, and solving the problems of steering knuckle bushing 7 angle not meeting the drawing requirements and unstable bushing angle adjustment process in traditional assembly methods.

[0060] The rotary transmission component 3 serves as a power transmission intermediary between the angle adjustment rod 2 and the steering knuckle bushing 7, reducing friction between the angle adjustment rod 2 and the steering knuckle bushing 7 and preventing wear on the surface of the steering shaft bushing.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An angle adjustment structure for assembling a steering knuckle bushing, characterized in that, include: The fixing plate is provided with a mounting groove for limiting the steering knuckle bushing; An angle adjustment rod is connected at one end to a turntable driven by a drive motor, and at the other end is placed inside the steering knuckle bushing. The angle adjustment rod is used to drive the steering knuckle bushing to rotate in order to adjust the angle. A rotary transmission component is disposed at the bottom of the fixed plate and nested on the outer circumferential surface of the angle adjustment rod. When the rotary transmission component abuts against the outer surface of the steering knuckle bushing, it smoothly transmits the rotational movement of the angle adjustment rod to the steering knuckle bushing.

2. The angle adjustment structure for assembling a steering knuckle bushing according to claim 1, characterized in that, The angle adjustment rod and the steering knuckle bushing are provided with a reserved gap to avoid wear and damage to the steering knuckle bushing.

3. The angle adjustment structure for assembling a steering knuckle bushing according to claim 2, characterized in that, The angle adjustment rod is also connected to a lifting cylinder for adjusting the reserved spacing in the longitudinal direction. The lifting cylinder is located at the bottom of the turntable, and a piston rod is provided on the lifting cylinder. One end of the piston rod is connected to the turntable, and the other end is connected to the drive motor.

4. The angle adjustment structure for assembling a steering knuckle bushing according to claim 3, characterized in that, The lifting cylinder is connected to an external air system via an air pipe. The air system is equipped with a solenoid valve to control the extension and retraction of the lifting cylinder.

5. The angle adjustment structure for assembling a steering knuckle bushing according to claim 3, characterized in that, The central axis of the turntable is the rotational central axis of the angle adjustment rod, which coincides with the rotational central axis of the output shaft of the drive motor and is collinear with the central axis of the mounting groove of the fixing plate.

6. An angle adjustment structure for assembling a steering knuckle bushing according to any one of claims 3-5, characterized in that, The rotary transmission component includes a roller ball bearing, which is fitted into the bottom of the fixed plate. Under the sequential operation of the lifting cylinder and the drive motor, the roller ball bearing abuts against the angle adjustment rod and undergoes rolling friction transmission.

7. The angle adjustment structure for assembling a steering knuckle bushing according to claim 6, characterized in that, The drive motor is mounted on a motor support plate, and the lifting cylinder is mounted on a cylinder support plate. The motor support plate has a first transmission hole, and the cylinder support plate has a second transmission hole. The output shaft of the drive motor passes through the first transmission hole and connects to the lifting cylinder. The piston rod of the lifting cylinder passes through the second transmission hole and connects to the turntable, which can drive the turntable to move up and down while rotating around the piston rod.

8. The angle adjustment structure for assembling a steering knuckle bushing according to claim 7, characterized in that, The drive motor is a servo motor, which is electrically or signal-connected to an external control system. The control system is used to preset and control the rotation angle and speed of the servo motor.

9. The angle adjustment structure for assembling a steering knuckle bushing according to claim 1, characterized in that, The shape of the mounting groove matches the shape of the steering knuckle bushing. The depth of the mounting groove is greater than 1 / 3 of the height of the steering knuckle bushing. The steering knuckle bushing can rotate around the central axis of the mounting groove and along the wall of the mounting groove.

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