Rear overhang lower support bracket testing fixture

Abstract

The utility model relates to a rear suspension lower support bracket testing fixture, which comprises two bottom boxes, a hydraulic support adjusting mechanism arranged between the two bottom boxes, a stabilizing mechanism arranged on the bottom boxes, a plurality of wheels fixed at the lower end of a bottom plate, a cylinder fixed at the top of the inner side of a box body and a lifting box fixed at the bottom box, a lifting box is fixed to the output end of the cylinder. According to the rear suspension lower support bracket testing fixture, the four threaded rods and the threaded sleeves which are annularly distributed are arranged in the lifting box and are matched with synchronous meshing transmission of the driving bevel gear and the driven bevel gear, so that the four supporting legs can synchronously move towards the outer side or the inner side and unfold supporting. Compared with a single-side threaded rod support of a comparison case, the structure can uniformly disperse the weight of the rear overhang support, device inclination caused by uneven stress is avoided, and especially when supporting points are asymmetric or the rear overhang weight distribution is uneven, the stability of the testing fixture during working is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, specifically to an inspection tool for a rear suspension lower support bracket. Background Technology

[0002] The term "lower rear suspension support" is commonly used to describe a vehicle's suspension system. It refers to a design in the vehicle's suspension system, typically used on the rear axle, to support the vehicle's suspension components and ensure the stability and reliability of the vehicle's suspension system. This design helps improve the vehicle's handling and stability, especially when driving at high speeds or encountering bumpy roads.

[0003] In the related technology, Chinese patent document with application number CN202420427923.4 proposes a rear suspension underbody support bracket inspection tool. It allows the operator to adjust the length of the telescopic rod and the distance between the two hydraulic cylinders according to the actual situation. After the adjustment is completed, the length of the telescopic rod is fixed by turning the adjustment knob. Then, the device is moved to the appropriate position by the pulley on the underside of the placement plate. After the movement is completed, the handle is turned, and the base plate is raised and lowered by the threaded rod to support the device. Finally, the hydraulic cylinder is operated by the control valve to support the rear suspension underbody to the appropriate position.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: the device is supported by a single-sided threaded rod chassis through its stabilizing mechanism, which easily leads to tilting of the device during lifting due to uneven force distribution. Especially when the support points are asymmetrical or the weight distribution of the rear suspension is uneven, the stability is poor, the adjustment efficiency is low, and the threaded rod needs to be manually driven by turning the throttle, which is cumbersome and time-consuming. It is difficult to quickly adapt to different maintenance scenarios, the switching between movement and stability is inconvenient, the coordination between the pulley and the chassis is insufficient, the pulley braking mechanism is not clearly defined, and the support may fail due to pulley slippage during operation. In view of this, a rear suspension lower support bracket inspection tool is proposed to solve the above problems. Utility Model Content

[0005] The main purpose of this utility model is to provide a rear suspension underpin support inspection tool, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rear suspension underbody support bracket inspection tool, comprising two base boxes, a hydraulic support adjustment mechanism between the two base boxes, a stabilizing mechanism on the base box, and multiple wheels fixed to the lower end of the base plate;

[0007] The stabilizing mechanism includes a cylinder and a lifting box fixed inside the base box. The cylinder is fixed to the top of the inner side of the box, and the lifting box is fixed to the output end of the cylinder. A driving bevel gear is rotatably installed in the middle of the inner side of the lifting box. Four fixed blocks are fixed in a ring inside the lifting box. A threaded rod is rotatably installed on the fixed block. A threaded sleeve is threadedly connected to the threaded rod. A driven bevel gear that meshes with the driving bevel gear is fixed to one end of the threaded rod. A support leg is fixed to the lower side of the end of the threaded sleeve.

[0008] Furthermore, the box body has sliding grooves on both sides for the threaded sleeve to move.

[0009] Furthermore, a drive motor for driving the active bevel gear to rotate is fixed on the lifting box.

[0010] Furthermore, a guide groove is provided on the inner side of the lifting box, and a slider that slides in cooperation with the guide groove is fixed at the lower end of the threaded sleeve.

[0011] Furthermore, the threaded sleeve and the threaded rod are aligned in the same threaded direction, and the axial installation direction of the threaded rod allows the support legs to unfold when the threaded sleeve moves outward and retract when it moves inward.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] This rear suspension support bracket fixture utilizes four threaded rods and threaded sleeves arranged in a ring within the lifting box. Through the synchronous meshing of the driving and driven bevel gears, the four support legs can move outwards or inwards simultaneously to extend and support the rear suspension. Compared to the single-sided threaded rod support of the comparative case, this structure evenly distributes the weight of the rear suspension support, preventing tilting due to uneven force distribution. This significantly improves the stability of the fixture during operation, especially when the support points are asymmetrical or the weight distribution of the rear suspension is uneven. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the cylinder and drive motor of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the fixing block and the threaded rod of this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Hydraulic support adjustment mechanism; 2. Base box; 3. Stabilizing mechanism; 301. Cylinder; 302. Drive motor; 303. Threaded sleeve; 304. Wheel; 305. Support leg; 306. Slide groove; 307. Driven bevel gear; 308. Driven bevel gear; 309. Fixed block; 310. Threaded rod; 311. Lifting box; 312. Slider; 313. Guide groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 The rear suspension underbody support bracket inspection tool in this embodiment includes two base boxes 2, a hydraulic support adjustment mechanism 1 is provided between the two base boxes 2, a stabilizing mechanism 3 is provided on the base box 2, and multiple wheels 304 are fixed at the lower end of the base plate.

[0021] The stabilizing mechanism 3 includes a cylinder 301 and a lifting box 311 fixed inside the base box 2. The cylinder 301 is fixed to the top of the inner side of the box, and the lifting box 311 is fixed to the output end of the cylinder 301. A driving bevel gear 308 is rotatably installed in the middle of the inner side of the lifting box 311. Four fixed blocks 309 arranged in a ring are fixed inside the lifting box 311. A threaded rod 310 is rotatably installed on the fixed block 309. A threaded sleeve 303 is threadedly connected to the threaded rod 310. A driven bevel gear 307 that meshes with the driving bevel gear 308 is fixed to one end of the threaded rod 310. A support leg 305 is fixed to the lower side of the end of the threaded sleeve 303.

[0022] The threaded sleeve 303 and the threaded rod 310 have the same threaded engagement direction. The axial installation direction of the threaded rod 310 allows the support leg 305 to unfold when the threaded sleeve 303 moves outward and to retract when it moves inward. The four threaded rods 310 have the same thread direction and are symmetrically installed. When the drive bevel gear 308 rotates, the four threaded sleeves 303 move synchronously away from or towards the center of the lifting box 311, thus realizing the synchronous unfolding or retraction of the support leg 305.

[0023] The cylinder 301 of the device retracts, causing the lifting box 311 and the support leg 305 to rise. The wheel 304 contacts the ground, and the device can be moved to the target position via the wheel 304. The cylinder 301 extends, the support leg 305 descends to the ground and supports the device, and the wheel 304 leaves the ground. At this time, the driving bevel gear 308 rotates, which simultaneously drives the four driven bevel gears 307 and the threaded rod 310 to rotate synchronously, causing the threaded sleeve 303 to move axially along the threaded rod 310, thereby realizing the expansion or contraction of the support leg 305.

[0024] The box body has sliding grooves 306 on both sides for the threaded sleeve 303 to move. The sliding grooves 306 provide guidance for the linear movement of the threaded sleeve 303, ensuring that the support leg 305 moves along a predetermined trajectory during the unfolding or retraction process, and avoiding circumferential offset caused by threaded transmission.

[0025] The structure and working principle of the hydraulic support adjustment mechanism 1 in this utility model have been disclosed in the Chinese patent application No. CN202420427923.4, "A Rear Suspension Lower Support Bracket Inspection Tool". The hydraulic support adjustment mechanism 1 belongs to the prior art, and its working principle is the same as that in this solution.

[0026] Meanwhile, a drive motor 302 for driving the active bevel gear 308 to rotate is fixed on the lifting box 311. The output shaft of the drive motor 302 is connected to the active bevel gear 308. The rotation direction of the active bevel gear 308 is controlled by forward and reverse rotation, thereby realizing the synchronous unfolding or retraction of the four support legs 305.

[0027] In addition, a guide groove 313 is provided on the inner side of the lifting box 311, and a slider 312 that slides in cooperation with the guide groove 313 is fixed at the lower end of the threaded sleeve 303. The guide groove 313 and the slider 312 cooperate to form a linear guide rail structure, which further constrains the movement trajectory of the threaded sleeve 303, prevents it from tilting or shaking during the rotation of the threaded rod 310, and improves the stability of the support leg 305.

[0028] The working principle of the above embodiments is as follows:

[0029] When maintenance of the rear suspension support is required, the device is first moved to the target position via the wheel 304 at the lower end of the base plate. At this time, the cylinder 301 in the control box 2 extends, driving the lifting box 311 to move downward, so that the four ring-shaped support legs 305 contact the ground and support the device, while the wheel 304 lifts off the ground. Next, the drive motor 302 drives the active bevel gear 308 to rotate, which synchronously drives the four threaded rods 310 to rotate through the meshing driven bevel gear 307. Since the threads of the threaded rods 310 have the same direction of rotation, the threaded sleeve 303 moves outward synchronously along the axial direction of the threaded rods 310, and the support legs 305 unfold to the predetermined position. The movement accuracy is ensured by the cooperation of the guide groove 313 and the slider 312, achieving multi-directional uniform support.

[0030] After stabilizing the support, the existing hydraulic support adjustment mechanism 1 is used, such as a telescopic rod to adjust the distance between the hydraulic cylinders. The control valve controls the injection of hydraulic oil into the hydraulic cylinders, pushing the piston rod upward to raise the rear suspension support to a suitable height for maintenance. After maintenance is completed, the motor reverses to drive the support leg 305 to move inward synchronously and retract, the cylinder 301 retracts to raise the lifting box 311, the wheel 304 lands, and the device returns to its mobile state.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rear suspension underbody support bracket inspection fixture, comprising two base boxes (2), wherein a hydraulic support adjustment mechanism (1) is provided between the two base boxes (2), characterized in that: The bottom box (2) is equipped with a stabilizing mechanism (3), and multiple wheels (304) are fixed at the lower end of the bottom plate; The stabilizing mechanism (3) includes a cylinder (301) and a lifting box (311) fixed inside the base box (2). The cylinder (301) is fixed at the top inside the box. The lifting box (311) is fixed at the output end of the cylinder (301). An active bevel gear (308) is rotatably installed in the middle of the inner side of the lifting box (311). Four fixed blocks (309) are fixed in a ring inside the lifting box (311). A threaded rod (310) is rotatably installed on the fixed block (309). A threaded sleeve (303) is threadedly connected to the threaded rod (310). A driven bevel gear (307) that meshes with the active bevel gear (308) is fixed at one end of the threaded rod (310). A support leg (305) is fixed at the lower end of the threaded sleeve (303).

2. The rear suspension underbody bracket inspection fixture according to claim 1, characterized in that: The box body has grooves (306) on both sides for the threaded sleeve (303) to move.

3. The rear suspension underbody bracket inspection fixture according to claim 1, characterized in that: The lifting box (311) is fixed with a drive motor (302) for driving the active bevel gear (308) to rotate.

4. The rear suspension underbody bracket inspection fixture according to claim 1, characterized in that: The lifting box (311) has a guide groove (313) on its inner side, and the lower end of the threaded sleeve (303) is fixed with a slider (312) that slides in cooperation with the guide groove (313).

5. A rear suspension underbody support inspection fixture according to claim 1, characterized in that: The threaded sleeve (303) and the threaded rod (310) are in the same threaded engagement direction, and the axial installation direction of the threaded rod (310) causes the support leg (305) to unfold when the threaded sleeve (303) moves outward and to retract when it moves inward.

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