An auxiliary device for detecting the suspension of an automobile chassis

Abstract

This utility model relates to the field of automotive repair and testing technology, and discloses an auxiliary device for testing automotive chassis suspension, to solve the problems of insufficient simulation of working conditions, low operating efficiency, and inadequate equipment compatibility in traditional chassis testing. The device includes a sliding base plate, a lower bearing seat mounted on the bottom of a mounting frame and housing a first joint bearing, a swing shaft with a first universal ball joint in the middle and a second universal ball joint at the top, an extension rod connected by an external thread at the bottom, an upper cover plate with an auxiliary bearing at the bottom and downward-curved edges, and a protective assembly installed between the upper cover plate and the sliding base plate. This device can simulate actual working conditions, is easy for single-person operation, is compatible with lifts while protecting their paint, and can accurately detect clearances between chassis components, improving testing accuracy and efficiency to meet automotive repair needs.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair and testing technology, and in particular to an auxiliary device for testing automotive chassis suspension. Background Technology

[0002] Clearance testing of front and rear axle chassis suspension components (such as control arm bushings, multi-link suspension components, stabilizer bar bushings, shock absorber bushings, etc.) is a crucial step in automotive repair, as the test results directly affect the accuracy of diagnosing and troubleshooting chassis noises. Currently, this field faces the following technical challenges:

[0003] 1. Defects in working condition simulation: In traditional testing, chassis components are mostly in a fully stretched static state, which cannot reproduce the actual working conditions of the vehicle such as braking and acceleration. This leads to a disconnect between fault diagnosis and real usage scenarios. Not only is it difficult to accurately identify suspension clearance problems, but it is also easy to misjudge or damage components due to insufficient working condition simulation.

[0004] 2. Low operational efficiency: Traditional chassis suspension testing requires multiple people to operate in coordination, and the operation mode of the testing instruments is limited, making it difficult to achieve all-round testing of components such as the swing arm bushing by "swaying back and forth and left and right". Even with the help of a four-post lift or a large shear lift, the limited functions of the instruments make it impossible to efficiently complete the troubleshooting of minor gap faults, and it is difficult to balance testing efficiency and accuracy.

[0005] 3. Insufficient equipment compatibility and installation: The existing testing device has two major defects when used with car repair lifts: First, the installation position is unreasonable, and it cannot be directly fixed to the area where the front wheels of the lift are placed or the front end of the turntable, resulting in poor compatibility; second, the device is prone to scratching the paint surface of the lift platform, affecting the service life of the lift; at the same time, the traditional device lacks the convenience of independent operation by a single person, which further restricts the testing efficiency.

[0006] To address the aforementioned issues, there is an urgent need for a user-friendly chassis inspection auxiliary device that can simulate actual working conditions and is easy to install. This device would enable precise detection of gaps in chassis suspension components such as control arm bushings and multi-link suspension components, thereby improving the accuracy and efficiency of chassis inspection and meeting the practical needs of the automotive repair industry. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model provides an auxiliary device for automotive chassis suspension testing that is easy to operate, can simulate actual working conditions, and enables precise detection of chassis component gaps, thereby improving the accuracy and efficiency of chassis suspension testing.

[0008] This utility model discloses an auxiliary device for testing automobile chassis suspension, comprising:

[0009] A base plate sliding seat, wherein a limiting circular hole is provided through the top front side of the base plate sliding seat, and a mounting bracket is provided at the bottom front side of the base plate sliding seat, wherein a through hole is provided through the bottom middle of the mounting bracket, and the through hole and the limiting circular hole are longitudinally concentric.

[0010] The lower bearing housing is installed at the bottom of the mounting bracket, and the first joint bearing is installed inside the lower bearing housing.

[0011] A swing shaft is provided with a first universal ball in the middle of the swing shaft. The first universal ball is rotatably mounted on a first joint bearing. One end of the swing shaft extends out of the upper side of the mounting base, and the other end extends to the lower side of the first joint bearing.

[0012] The upper cover plate has an auxiliary bearing installed on the front side of its bottom end. The bottom end of the auxiliary bearing is concentrically provided with an upper bearing seat. The upper bearing seat is installed with a second joint bearing. The upper bearing seat is located in the limiting circular hole. The top end of the swing shaft is provided with a second universal ball. The second universal ball and the second joint bearing are rotatably engaged.

[0013] A protective component is installed between the upper cover plate and the base plate sliding seat, which assists the upper cover plate in sliding on the base plate sliding seat.

[0014] Furthermore, the protective component includes a fixing frame, and the base plate sliding seat is provided with a limiting component of the fixing frame. The top of the fixing frame is evenly distributed with multiple positioning holes, and a steel ball is rotatably installed in each positioning hole. The top of the base plate sliding seat and the bottom of the upper cover plate are in close contact with several steel balls. The front side of the top of the fixing frame is provided with a left-right elongated hole, and the auxiliary bearing is slidably fitted into the elongated hole of the fixing frame.

[0015] Furthermore, the limiting assembly includes a lower fixed pull plate, and two elongated holes extending forward and backward are provided through the rear side of the top center of the base plate sliding seat. Pin holes are provided through the front and rear sides of the top center of the fixing frame, and a pin is slidably inserted into each pin hole. The bottom of the two pins is slidably engaged with the two elongated holes of the base plate sliding seat. The front and rear sides of the lower fixed pull plate are respectively locked to the bottom ends of the two pins by bolts. Limit caps are provided at the top of the two pins, and the limit caps limit the pins within the pin holes.

[0016] Furthermore, two limiting bearings are provided on the front and rear sides of the bottom end of the upper cover plate. The two limiting bearings on the same side are arranged in a left-right direction, and the two limiting bearings on the front side and the two limiting bearings on the rear side slide tightly against the front and rear ends of the fixing frame, respectively.

[0017] Furthermore, the bottom ends of the two limiting bearings on the same side are equipped with pull plates, and the lower front and lower rear sides of the fixing frame are provided with pull grooves. The two pull plates are slidably engaged with the two pull grooves respectively.

[0018] Furthermore, an anti-slip plate is installed on the top of the upper cover plate.

[0019] Furthermore, the edge of the upper cover plate is provided with a downward-facing flange structure.

[0020] Furthermore, the bottom outer wall of the swing shaft is provided with external threads.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. It can simulate actual working conditions and solve the defects of traditional static detection: By cooperating with the first universal ball and the first joint bearing, and the second universal ball and the second joint bearing of the swing shaft, the upper cover plate can swing at multiple angles, which can restore the actual use conditions of vehicle braking and acceleration, accurately identify the suspension clearance problem of chassis components such as the swing arm bushing, and avoid misjudgment of faults or damage to components.

[0023] 2. Convenient operation and high testing efficiency: It can be operated independently by a single person. The steel balls in the protective components can reduce the friction between the upper cover plate and the sliding seat of the base plate, making the upper cover plate shake more smoothly. The limit bearing further ensures the sliding stability. It can realize the all-round detection of chassis components by "swaying back and forth and left and right", without the need for multiple people to cooperate, effectively improving the efficiency of troubleshooting small gap faults, and taking into account both detection accuracy and efficiency.

[0024] 3. Good equipment adaptability and protection of the lift: The base plate sliding seat supports the removal of the original base plate of the lift and direct installation of the base plate sliding seat on the lift. The swing shaft can extend to the underside of the lift, which can accurately adapt to the area where the front wheels of the lift are placed and the foremost position of the corner plate, making it highly adaptable.

[0025] 4. Safe and stable use: The anti-slip plate at the top of the cover plate can prevent the chassis components from slipping during inspection. The downward-folding edge structure can hide the components under the cover plate and prevent debris from rolling into the underside of the cover plate. The external thread at the bottom of the swing shaft makes it easy to connect the extension rod, making it easier to operate the swing shaft and further improving the safety, ease of operation and structural stability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is an exploded view of the present invention;

[0028] Figure 3 This is the utility model Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0029] Figure 4 This is a schematic diagram of the connection structure between the upper bearing seat and the second universal ball of this utility model;

[0030] Figure 5 This is a schematic diagram of the installation of the automotive chassis suspension testing auxiliary device of this utility model on a lift;

[0031] The following are labels in the attached diagram: 1. Base plate sliding seat; 2. Limiting hole; 3. Mounting bracket; 4. Lower bearing seat; 5. First joint bearing; 6. Swing shaft; 7. First universal ball; 8. Upper cover plate; 9. Auxiliary bearing; 10. Upper bearing seat; 11. Second joint bearing; 12. Second universal ball; 13. Fixing bracket; 14. Steel ball; 15. Lower fixing pull plate; 16. Pin; 17. Limiting cap; 18. Limiting bearing; 19. Reverse pull plate; 20. Anti-slip plate; 21. Flanged structure; 22. External thread. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0033] like Figures 1 to 5 As shown, the present invention provides an auxiliary device for testing automobile chassis suspension, comprising:

[0034] The base plate sliding seat 1 has a limiting circular hole 2 through the front side of the top end of the base plate sliding seat 1, and a mounting bracket 3 is provided on the front side of the bottom end of the base plate sliding seat 1. A through hole is provided in the middle of the bottom end of the mounting bracket 3, and the through hole and the limiting circular hole 2 are longitudinally concentric.

[0035] The lower bearing housing 4 is installed at the bottom of the mounting bracket 3, and the first joint bearing 5 is installed inside the lower bearing housing 4.

[0036] A swing shaft 6 is provided with a first universal ball 7 in the middle of the swing shaft 6. The first universal ball 7 is rotatably mounted on the first joint bearing 5. One end of the swing shaft 6 extends out of the upper side of the mounting base, and the other end extends to the lower side of the first joint bearing 5.

[0037] The upper cover plate 8 has an auxiliary bearing 9 installed on the front side of its bottom end. The bottom end of the auxiliary bearing 9 is concentrically provided with an upper bearing seat 10. The upper bearing seat 10 is installed with a second joint bearing 11. The upper bearing seat 10 is located in the limiting round hole 2. The top end of the swing shaft 6 is provided with a second universal ball 12. The second universal ball 12 and the second joint bearing 11 are rotatably engaged.

[0038] A protective component is installed between the upper cover plate 8 and the bottom plate sliding seat 1, which is used to assist the upper cover plate 8 in sliding on the bottom plate sliding seat 1.

[0039] In this embodiment,

[0040] The automotive chassis suspension testing auxiliary device of this utility model needs to be used in pairs (one set for each side).

[0041] The base plate sliding seat 1 serves as the installation and load-bearing foundation for the entire device. A limiting circular hole 2 is provided through the front of its top end to provide radial positioning space for the upper bearing seat 10. A mounting bracket 3 is integrally formed or bolted to the front of the bottom end. A through hole is provided through the middle of the bottom end of the mounting bracket 3, and the through hole and the limiting circular hole 2 are longitudinally concentric to ensure the coaxial fit accuracy between the subsequent swing shaft 6 and the upper bearing seat 10. At the same time, the base plate sliding seat 1 supports the removal of the original base plate of the lift and can be directly fixed to the lift by bolts or clips. It is compatible with the area where the front wheels of the lift are placed and the front end of the corner plate. It also reserves space for the swing shaft 6 to extend to the lower side of the lift, improving the adaptability of the equipment.

[0042] The lower bearing housing 4 is made of metal and is fastened to the bottom of the mounting bracket 3 by bolts. The first joint bearing 5 is installed inside with an interference fit. The core function of the lower bearing housing 4 is to provide fixed support for the first joint bearing 5, limit its radial and axial positions, and ensure the concentricity of the first joint bearing 5 with the through hole of the mounting bracket 3 and the limiting circular hole 2 of the sliding seat 1 of the base plate, thus laying the foundation for the stable rotation of the swing shaft 6.

[0043] The swing shaft 6 is a long metal shaft structure. The middle part is integrally formed with a first universal ball 7. The first universal ball 7 is rotatably mounted in the first joint bearing 5 through an interference fit or a snap ring structure, so as to realize the swing shaft 6 rotating around the first joint bearing 5 at multiple angles. The top of the swing shaft 6 is integrally formed with a second universal ball 12. Its core function is as a core component for power transmission and angle adjustment. Through the double joint cooperation of the first universal ball 7 and the second universal ball 12, the upper cover plate 8 is driven to swing at multiple angles, simulating the actual working conditions of the vehicle.

[0044] The upper cover plate 8 is a rectangular metal plate structure, and its core function is to serve as a direct load-bearing platform for the chassis inspection components; the auxiliary bearing 9 cooperates with the upper bearing seat 10 to ensure the stability of the upper cover plate 8 when it rotates synchronously with the swing shaft 6.

[0045] Protective component: Installed between the upper cover plate 8 and the bottom plate sliding seat 1, its core function is to assist the upper cover plate 8 to slide smoothly and reduce friction damage. Its specific structure and function will be explained in detail in the following paragraphs.

[0046] As a preferred embodiment of the above, the protective component includes a fixing frame 13, and a limiting component of the fixing frame 13 is provided on the base plate sliding seat 1. A plurality of positioning holes are evenly distributed through the top of the fixing frame 13, and a steel ball 14 is rotatably installed in each positioning hole. The top of the base plate sliding seat 1 and the bottom of the upper cover plate 8 are both in close contact with a plurality of steel balls 14. A left-right elongated hole is provided through the front side of the top of the fixing frame 13, and an auxiliary bearing 9 is slidably fitted into the elongated hole of the fixing frame 13.

[0047] In this embodiment,

[0048] Fixed frame 13: It is a frame-type metal structure, connected to the base plate sliding seat 1 through a limiting component. Multiple circular positioning holes are evenly distributed through the top of the frame, and a long hole running left and right is opened through the front side of the top. The positioning holes are used to limit the installation position of the steel ball 14 and prevent the steel ball 14 from rolling off. The long hole slides and engages with the auxiliary bearing 9 at the bottom of the upper cover plate 8, limiting the sliding direction of the auxiliary bearing 9 (only sliding left and right), preventing the upper cover plate 8 from shifting laterally, and providing sliding space for the auxiliary bearing 9.

[0049] Steel ball 14: Made of high-strength wear-resistant metal, a steel ball 14 is rotatably installed in each positioning hole through a snap ring or stepped structure. The top of the steel ball 14 is in close contact with the bottom of the upper cover plate 8, and the bottom is in close contact with the top of the base plate sliding seat 1. Its core function is to convert the sliding friction between the upper cover plate 8 and the base plate sliding seat 1 into rolling friction, which greatly reduces the frictional resistance between the two, makes the upper cover plate 8 swing more smoothly, reduces the operating force, and improves the convenience of operation during testing.

[0050] Cooperation of protective components with other parts: Through the rolling support of steel ball 14, the upper cover plate 8 can slide stably along the fixed frame 13. At the same time, the elongated hole of the fixed frame 13 cooperates with the auxiliary bearing 9 to ensure that the upper cover plate 8 does not leave the range of the base plate sliding seat 1 when sliding, and avoids direct contact between the lower part of the upper cover plate 8 and the base plate sliding seat 1, preventing wear of parts and scratches on the paint surface of the lift.

[0051] As a preferred embodiment of the above, the limiting component includes a lower fixed pull plate 15, two elongated holes extending from the rear side of the top center of the base plate sliding seat 1, and pin holes extending from the front and rear sides of the top center of the fixing frame 13. A pin rod 16 is slidably inserted into each pin hole, and the bottom of the two pin rods 16 is slidably engaged with the two elongated holes of the base plate sliding seat 1. The front and rear sides of the lower fixed pull plate 15 are respectively locked to the bottom ends of the two pin rods 16 by bolts. A limiting cap 17 is provided at the top of each of the two pin rods 16, and the limiting cap 17 limits the pin rod 16 in the pin hole.

[0052] In this embodiment,

[0053] The lower fixed pull plate 15 is a rectangular metal plate with bolt holes on both its front and rear sides. It is locked to the bottom ends of the two pins 16 by bolts. Its core function is to connect the pins 16 and the lower fixed pull plate 15 into one piece by bolt fastening, preventing the pins 16 from coming out of the elongated hole in the base plate sliding seat 1, and ensuring the connection stability between the fixed frame 13 and the base plate sliding seat 1.

[0054] Pin 16: Two cylindrical metal rods are provided. Pin holes are provided on the front and rear sides of the top center of the fixing frame 13. The two pins 16 are slidably inserted into the two pin holes respectively. Two elongated holes are provided on the rear side of the top center of the base plate sliding seat 1. The bottom of the two pins 16 are slidably engaged with the two elongated holes respectively. The core function of the pins 16 is to realize the sliding connection between the fixing frame 13 and the base plate sliding seat 1, allowing the fixing frame 13 to be finely adjusted back and forth along the elongated holes of the base plate sliding seat 1 to adapt to the testing needs of chassis components of different sizes, while limiting the left and right displacement of the fixing frame 13.

[0055] Limiting cap 17: It is a round metal cap that is fixed to the top of the two pins 16 by thread or welding. Its diameter is larger than the diameter of the pin hole. Its core function is to axially limit the pins 16, prevent the pins 16 from coming out of the pin hole of the fixing frame 13, and ensure the stability of the sliding fit between the fixing frame 13 and the pins 16.

[0056] As a preferred embodiment of the above embodiment, two limiting bearings 18 are provided on the front side and the rear side of the bottom end of the upper cover plate 8. The two limiting bearings 18 on the same side are arranged in the left and right direction, and the two limiting bearings 18 on the front side and the two limiting bearings 18 on the rear side slide tightly against the front end and the rear end of the fixing frame 13, respectively.

[0057] In this embodiment,

[0058] Limiting bearings 18: Two limiting bearings 18 on the same side are symmetrically distributed in the left and right direction (the two on the front side are arranged along the width direction of the upper cover plate 8, and the two on the rear side are the same). The inner rings of the two limiting bearings 18 on the front side slide tightly against the outer wall of the front end of the fixing frame 13, and the inner rings of the two limiting bearings 18 on the rear side slide tightly against the outer wall of the rear end of the fixing frame 13. Their core function is to limit the front and rear displacement of the upper cover plate 8, prevent the upper cover plate 8 from shifting back and forth when sliding, and at the same time reduce the friction between the upper cover plate 8 and the fixing frame 13 by the rolling of the bearings, so as to ensure the smoothness of the upper cover plate 8 when sliding left and right along the fixing frame 13.

[0059] As a preferred embodiment of the above, the bottom ends of the two limiting bearings 18 on the same side are equipped with pull plates 19, and the lower front side and the lower rear side of the fixing frame 13 are provided with pull grooves. The two pull plates 19 are slidably engaged with the two pull grooves respectively.

[0060] In this embodiment,

[0061] The reverse pull plate 19 is a metal plate that is bolted to the bottom end of the limit bearing 18 and is embedded in the reverse pull groove of the fixing frame 13 and is slidably engaged with the reverse pull groove. Its core function is to longitudinally limit the upper cover plate, prevent the upper cover plate 8 from detaching from the fixing frame 13 during sliding or swinging, ensure the stability of the fit between the upper cover plate 8 and the fixing frame 13, and prevent the parts from falling off during testing.

[0062] As a preferred embodiment of the above embodiment, an anti-slip plate 20 is installed on the top of the upper cover plate 8;

[0063] In this embodiment,

[0064] Anti-slip plate 20: Made of rubber or non-slip metal, it is fixed to the top of the upper cover plate 8 by bolts; its core function is to increase the friction coefficient at the top of the upper cover plate 8, prevent the chassis components (such as the swing arm bushing) from sliding and shifting on the cover plate during testing, ensure the stability of the component position during testing, and improve operational safety.

[0065] As a preferred embodiment of the above embodiment, the edge of the upper cover plate 8 is provided with a downward flange structure 21;

[0066] In this embodiment,

[0067] The upper cover plate 8 has a flange structure 21: the four edges of the upper cover plate 8 are bent downward to form a flange; its core functions are: first, to hide the auxiliary bearing 9, upper bearing seat 10, limit bearing 18 and other components on the lower side of the upper cover plate 8, thereby improving the cleanliness of the device's appearance; second, to prevent debris, tools and other foreign objects generated during the detection process from rolling into the lower side of the upper cover plate 8, avoiding foreign objects from getting stuck in the steel ball 14 or bearing, reducing wear on internal components and extending the service life of the device.

[0068] As a preferred embodiment of the above embodiment, the bottom outer side wall of the swing shaft 6 is provided with an external thread 22;

[0069] In this embodiment,

[0070] The bottom outer wall of the swing shaft 6 is machined with standard threads; its core function is to facilitate the connection of the extension rod (through threaded engagement). The operator can remotely control the swing shaft 6 to swing through the extension rod, using the lever principle to reduce the operating force, and realize easy adjustment of the angle of the upper cover plate 8 by a single person, thus improving the convenience of operation.

[0071] The working principle of this utility model is as follows:

[0072] 1. Equipment Installation Stage

[0073] Remove the original base plate of the "front wheel placement area" or "front end of the corner plate" of the lift, and fix the two sets of devices (one on the left and one on the right) to the corresponding positions of the lift through the bolt holes of the base plate sliding seat 1, ensuring that the distance between the two sets of devices matches the wheel track of the car's front wheels.

[0074] Adjusting the position of the fixing bracket 13: By cooperating with the long hole of the base plate sliding seat 1 through the pin 16, the fixing bracket 13 is moved back and forth so that the center position of the upper cover plate 8 is accurately aligned with the parking position of the front wheel of the car on the lift. According to actual needs, a locking mechanism can be designed for the swing shaft 6. That is, after the position of the upper cover plate 8 is adjusted, the position of the swing shaft 6 is locked. At this time, the position of the upper cover plate 8 is fixed, which makes it easy to drive the car onto the upper cover plate 8. This locking mechanism can be designed as a detachable block to hold the upper bearing seat 10 in the limiting round hole 2. After the car is positioned on the lift, the block can be removed. Alternatively, the locking mechanism can be set as a positioning pin. The positioning pin can pass through the upper cover plate and be inserted into the base plate sliding seat to complete the positioning. When in normal use, the positioning pin can be pulled out.

[0075] (Optional) Attach an extension rod to the external thread 22 at the bottom of the swing shaft 6 to ensure that the extension rod is long enough for the operator to operate from the outside of the lift.

[0076] 2. Vehicle assembly stage

[0077] Slowly drive the car to be tested onto the lift so that the two front wheels of the car are placed smoothly on the top of the upper cover plate 8 of the two side devices (the center of the front wheel is aligned with the center of the upper cover plate 8);

[0078] Start the lift and raise the car to a suitable inspection height (usually the height at which the operator can observe the chassis, about 1.2-1.5m). At this time, the weight of the front wheels is completely supported by the upper cover plate 8, and the anti-slip texture prevents the wheels from deviating.

[0079] 3. Operating condition simulation and fault diagnosis phase

[0080] Simulated acceleration / braking conditions: The operator pushes the two swing shafts 6 forward / backward synchronously with the extension rod. The swing shafts 6, with the help of the first universal ball 7 + first joint bearing 5 and the second universal ball 12 + second joint bearing 11, drive the upper cover plate 8 (and the front wheels) to swing back and forth, restoring the chassis posture when the car accelerates (front wheels tilt forward) and brakes (front wheels tilt backward). At this time, it is possible to observe whether the chassis components such as the swing arm bushings have abnormal displacement, or listen for abnormal noises caused by excessive clearance.

[0081] Simulated cornering conditions: The operator uses the extension rod to differentially adjust the two swing shafts 6 (e.g., the left side tilts up, the right side tilts down, or vice versa), causing the upper cover plates 8 on both sides (and the front wheels) to create a height difference, simulating the lateral tilt posture of a car when cornering; at this time, the dynamic clearance of components such as multi-link suspension, stabilizer bar bushings, and shock absorber bushings can be observed to check for any hidden faults caused by lateral tilting forces (such as loose components or aging bushings).

[0082] Stability assurance: During the swinging process, the limit bearing 18 limits the front-to-back / left-to-right offset range of the upper cover plate 8, the pull plate 19 prevents the upper cover plate 8 from collapsing longitudinally, and the steel ball 14 reduces friction to ensure smooth swinging. All components work together to ensure that the working condition simulation is close to the real driving scenario, and a single person can complete all operations.

[0083] 4. End of testing phase

[0084] Stop the swing adjustment, return the swing shaft 6 to the vertical position, and the upper cover plate 8 will return to stability; lower the lift and slowly drive the car away from the lift;

[0085] Clean the tire debris from the surface of the top cover plate 8 to complete the inspection.

[0086] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An auxiliary device for detecting automobile chassis suspension, characterized in that, include: The base plate sliding seat (1) has a limiting round hole (2) through the front side of the top end of the base plate sliding seat (1), and a mounting bracket (3) is provided on the front side of the bottom end of the base plate sliding seat (1). A through hole is provided in the middle of the bottom end of the mounting bracket (3), and the through hole and the limiting round hole (2) are longitudinally concentric. The lower bearing housing (4) is installed at the bottom of the mounting bracket (3), and the first joint bearing (5) is installed inside the lower bearing housing (4). A swing shaft (6) is provided in the middle of the swing shaft (6). The first universal ball (7) is rotatably mounted on the first joint bearing (5). One end of the swing shaft (6) extends out of the upper side of the mounting seat, and the other end extends to the lower side of the first joint bearing (5). The upper cover plate (8) has an auxiliary bearing (9) installed on the front side of the bottom end of the upper cover plate (8). The bottom end of the auxiliary bearing (9) is concentrically provided with an upper bearing seat (10). The upper bearing seat (10) is installed with a second joint bearing (11). The upper bearing seat (10) is located in the limiting round hole (2). The top end of the swing shaft (6) is provided with a second universal ball (12). The second universal ball (12) and the second joint bearing (11) are rotatably engaged. A protective component is installed between the upper cover plate (8) and the bottom plate sliding seat (1) to assist the upper cover plate (8) in sliding on the bottom plate sliding seat (1).

2. The vehicle chassis suspension testing auxiliary device as described in claim 1, characterized in that, The protective assembly includes a fixed frame (13). The base plate sliding seat (1) is provided with a limiting component for the fixed frame (13). The top of the fixed frame (13) is provided with multiple positioning holes evenly distributed through it. A steel ball (14) is rotatably installed in each positioning hole. The top of the base plate sliding seat (1) and the bottom of the upper cover plate (8) are in close contact with several steel balls (14). The front side of the top of the fixed frame (13) is provided with a long hole running from left to right. An auxiliary bearing (9) is slidably fitted into the long hole of the fixed frame (13).

3. The vehicle chassis suspension testing auxiliary device as described in claim 2, characterized in that, The limiting assembly includes a lower fixed pull plate (15). The top middle rear side of the bottom plate sliding seat (1) is provided with two elongated holes running forward and backward. The top middle front side and middle rear side of the fixed frame (13) are provided with pin holes. A pin rod (16) is slidably inserted into each pin hole. The bottom of the two pin rods (16) is slidably engaged with the two elongated holes of the bottom plate sliding seat (1). The front and rear sides of the lower fixed pull plate (15) are respectively locked to the bottom ends of the two pin rods (16) by bolts. The top of the two pin rods (16) is provided with a limiting cap (17). The limiting cap (17) limits the pin rod (16) in the pin hole.

4. The vehicle chassis suspension testing auxiliary device as described in claim 2, characterized in that, Two limiting bearings (18) are provided on the front and rear sides of the bottom end of the upper cover plate (8). The two limiting bearings (18) on the same side are arranged in the left and right directions, and the two limiting bearings (18) on the front side and the two limiting bearings (18) on the rear side slide and fit tightly against the front and rear ends of the fixing frame (13), respectively.

5. The vehicle chassis suspension testing auxiliary device as described in claim 4, characterized in that, The bottom ends of the two limit bearings (18) on the same side are equipped with pull plates (19), and the front and rear lower sides of the fixing frame (13) are provided with pull grooves. The two pull plates (19) are slidably engaged with the two pull grooves respectively.

6. The vehicle chassis suspension testing auxiliary device as described in claim 1, characterized in that, The top of the upper cover plate (8) is fitted with an anti-slip plate (20).

7. The vehicle chassis suspension testing auxiliary device as described in claim 1, characterized in that, The edge of the upper cover plate (8) is provided with a downward flange structure (21).

8. The vehicle chassis suspension testing auxiliary device as described in claim 1, characterized in that, The bottom outer side wall of the swing shaft (6) is provided with an external thread (22).

Images