Back press-fitting device for automobile rear trailing arm bushing

Abstract

The utility model discloses an automobile rear trailing arm lining reverse press fitting device which comprises a press machine and is characterized by further comprising a press fitting mechanism and a bottom plate. The press-fitting mechanism comprises a lining press-fitting upper connecting plate and a lining pressing head, the lining press-fitting upper connecting plate and the lining pressing head are matched in a sliding connection mode and fixed through a bolt, and the lining press-fitting upper connecting plate is fixedly connected with the upper end of the press machine through a bolt; the bottom plate is connected with a press machine bottom plate through bolts. A rear trailing arm assembly positioning unit is arranged on the bottom plate, two groups of rear trailing arm press-fitting supporting pins are arranged on two sides of the rear trailing arm assembly positioning unit, and rear trailing arm press-fitting limiting pins are arranged above the rear trailing arm press-fitting supporting pins. The lining reverse press-fitting device is reasonable in structural design, small in occupied area and high in universality, lining reverse press-fitting can be completed through a common press, and meanwhile welding assembly damage caused in the lining reverse press-fitting process can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing and manufacturing technology, specifically relating to a reverse pressing device for automotive rear longitudinal control arm bushings. Background Technology

[0002] The rear trailing arm bushing is a crucial component of the automotive chassis suspension system, primarily responsible for cushioning road impacts and reducing vibration and noise. During vehicle repairs or parts replacement, the bushing may need replacement due to aging, wear, or damage. Traditional bushing press-out methods typically rely on hand tools or simple mechanical devices, resulting in low efficiency, inconvenience, and potential damage to the rear trailing arm. Therefore, designing an efficient, precise, and non-damaging bushing press-out device for the rear trailing arm is of significant importance. Utility Model Content

[0003] The purpose of this utility model is to provide a reverse pressing device for automotive rear trailing arm bushings, in order to solve the problems of low efficiency, inconvenient operation, and easy damage to the rear trailing arm caused by traditional bushing pressing methods that usually rely on manual tools or simple mechanical devices.

[0004] This utility model is achieved through the following technical solution: a rear trailing arm bushing reverse pressing device for automobiles, including a press, characterized in that: it further includes a pressing mechanism and a base plate; the pressing mechanism includes a bushing pressing upper connecting plate and a bushing pressing head, the bushing pressing upper connecting plate and the bushing pressing head are slidably connected and fixed by bolts, the bushing pressing upper connecting plate is fixedly connected to the upper end of the press by bolts; the base plate is connected to the base plate of the press by bolts; a rear trailing arm assembly positioning unit is provided on the base plate, two sets of rear trailing arm pressing support pins are provided on both sides of the rear trailing arm assembly positioning unit, and a rear trailing arm pressing limit pin is provided above the trailing arm pressing support pins.

[0005] Furthermore: the bushing press-fit upper connecting plate is provided with a through hole; the lower part of the bushing press head is skirt-shaped, the upper part is stepped, and the thinner part of the step shape slides into the through hole, and the shoulder fits into the lower surface of the bushing press-fit upper connecting plate; a fastening threaded hole is provided on the side of the bushing press-fit upper connecting plate.

[0006] Furthermore: The rear trailing arm assembly positioning unit includes a rear trailing arm bushing counter-pressure positioning pin and a rear trailing arm bushing counter-pressure positioning seat. The rear trailing arm bushing counter-pressure positioning seat is fixed to the base plate by bolts, and the rear trailing arm bushing counter-pressure positioning pin is fixed to the rear trailing arm bushing counter-pressure positioning seat by interference fit.

[0007] Furthermore, a polyurethane pad is provided on the upper side of the rear trailing arm press-fit support pin.

[0008] Furthermore, handles are bolted to both sides of the base plate.

[0009] The beneficial effects of this utility model are: the structure of this utility model is reasonable, the device occupies a small area, and it is highly versatile. It can use an ordinary press to complete the bushing reverse pressing, and at the same time, it can effectively reduce the damage to the welding assembly caused during the bushing reverse pressing process. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 is a schematic diagram of the usage state of this utility model;

[0012] Figure 2 is a schematic diagram of the overall structure of this utility model;

[0013] Figure 3 is a schematic diagram of the rear longitudinal arm support unit structure of this utility model;

[0014] The numbers in the diagram are explained as follows: 1 is the rear trailing arm assembly, 2 is the rear trailing arm bushing assembly, 3 is the press-fitting mechanism, 4 is the press base plate, 5 is the bushing press-fitting upper connecting plate, 6 is the bushing press head, 7 is the rear trailing arm assembly positioning unit, 8 is the base plate, 9 is the rear trailing arm press-fitting support pin, 10 is the rear trailing arm press-fitting limit pin, 11 is the polyurethane pad, 12 is the handle, 13 is the rear trailing arm bushing back pressure positioning pin, 14 is the rear trailing arm bushing back pressure positioning seat, and 15 is the fastening threaded hole. Detailed Implementation

[0015] according to Figures 1-3 The specific structure of this utility model will be described in detail.

[0016] This utility model discloses a reverse pressing device for automobile rear trailing arm bushing, which is used to press the rear trailing arm bushing assembly 2 out from the rear trailing arm assembly 1. This device utilizes an existing press, and a pressing mechanism 3 and a base plate 8 are respectively provided on the upper movable end of the press and the lower press base plate.

[0017] The pressing mechanism 3 includes a bushing pressing upper connecting plate 5 and a bushing pressing head 6. The bushing pressing upper connecting plate 5 and the bushing pressing head 6 slide together and are fixed by bolts on the side. The bushing pressing upper connecting plate 5 is fixedly connected to the upper end of the press by bolts.

[0018] The base plate 8 is connected to the press base plate 4 by bolts. A rear trailing arm assembly positioning unit 7 is provided on the base plate 8. Two sets of rear trailing arm press-fit support pins 9 are provided on both sides of the rear trailing arm assembly positioning unit 7, corresponding to the left and right rear trailing arm assemblies respectively. A rear trailing arm press-fit limit pin 10 is provided above one of the rear trailing arm press-fit support pins 9. The rear trailing arm press-fit support pins 9 are installed on the base plate with an interference fit. The rear trailing arm press-fit limit pin 10 is integral with or has an interference fit with the rear trailing arm press-fit support pin 9.

[0019] Preferably, the bushing press-fit upper connecting plate 5 is provided with a through hole; the lower part of the bushing press head 6 is skirt-shaped and the upper part is stepped, and the thinner part of the step shape slides into the through hole, and the shoulder is in contact with the lower surface of the bushing press-fit upper connecting plate 5; a fastening threaded hole 15 is provided on the side of the bushing press-fit upper connecting plate 5, and the bushing press head is fixed by the fastening bolt that cooperates with it.

[0020] Preferably, the rear trailing arm assembly positioning unit 7 includes a rear trailing arm bushing counter-pressure positioning pin 13 and a rear trailing arm bushing counter-pressure positioning seat 14. The rear trailing arm bushing counter-pressure positioning seat 14 is fixed to the base plate 8 by bolts, and the rear trailing arm bushing counter-pressure positioning pin 13 is interference-fitted onto the rear trailing arm bushing counter-pressure positioning seat 14. The rear trailing arm bushing counter-pressure positioning seat 14 is used to support the rear trailing arm and provide positioning, and the rear trailing arm bushing counter-pressure positioning pin 13 mates with the inner hole of the bushing to further position the bushing.

[0021] Preferably, a polyurethane pad 11 is provided on the upper end face of the longitudinal arm press-fit support pin 9, which can effectively avoid damage to the workpiece surface. The polyurethane pad 11 is sleeved on the outside of the rear longitudinal arm press-fit limiting pin 10 or sleeved on the boss at the upper end of the longitudinal arm press-fit support pin 9 (when there is no rear longitudinal arm press-fit limiting pin 10, a stepped boss is added, and the thickness of the boss is less than the thickness of the pad), and can be further fixed by adhesive bonding.

[0022] Preferably, handles 12 are bolted to both sides of the base plate 8 for easy handling.

[0023] Preferably, two grooves are provided on the side of the rear trailing arm bushing counter-pressure positioning seat 14 to facilitate the removal of the pressed-out bushing, etc., using tools.

[0024] The operation process of this solution is as follows: Detailed operation process.

[0025] Install the rear trailing arm bushing back pressing mechanism and the rear trailing arm positioning mechanism on the hydraulic head and base of the press, respectively. Place the rear trailing arm assembly in the press. Adjust and tighten the bushing pressing mechanism according to the position of the bushing assembly. Adjust and tighten the rear trailing arm positioning mechanism according to the position of the rear trailing arm. Place the rear trailing arm assembly on the positioning seat and align the bushing positioning pin. Press the press start button with both hands to move the bushing pressing mechanism down and press the rear trailing arm bushing out of the rear trailing arm assembly. Press the press reset button to reset the bushing pressing mechanism. Remove the rear trailing arm assembly and bushing, and put the rear trailing arm assembly back in. Repeat the above steps to press the bushing.

[0026] This structure utilizes a hydraulic or pneumatic press system to provide stable thrust, ensuring uniform force on the bushing during pressing. The press head employs a specialized structure to prevent damage to the rear trailing arm during pressing. The rear trailing arm is effectively fixed during pressing using a support structure to prevent movement and deformation of the rear trailing arm assembly. The press head features a quick-change structure, suitable for reverse pressing of different bushing models. This structure effectively solves the problems of low efficiency, inconvenient operation, and easy damage to the rear trailing arm inherent in traditional pressing methods. This device achieves efficient and precise bushing pressing through the coordinated work of a hydraulic / pneumatic system, a flexible press head, and a positioning mechanism. As the automotive repair industry continues to demand higher efficiency and precision, the rear trailing arm bushing pressing device will play an increasingly important role in automotive repair and parts replacement. The rear trailing arm bushing reverse pressing device can be widely used in automotive repair shops, automotive parts suppliers, and automotive manufacturing plants. Its main purpose is to efficiently and accurately press the bushing out of the rear trailing arm, facilitating subsequent repair or replacement work.

Claims

1. A reverse pressing device for automotive rear trailing arm bushings, comprising a press, characterized in that: It also includes a pressing mechanism (3) and a base plate (8); The pressing mechanism (3) includes a bushing pressing upper connecting plate (5) and a bushing pressing head (6). The bushing pressing upper connecting plate (5) and the bushing pressing head (6) are slidably connected and fixed by bolts. The bushing pressing upper connecting plate (5) is fixedly connected to the upper end of the press by bolts. The base plate (8) is connected to the press base plate (4) by bolts; a rear longitudinal arm assembly positioning unit (7) is provided on the base plate (8), two sets of rear longitudinal arm press-fit support pins (9) are provided on both sides of the rear longitudinal arm assembly positioning unit (7), and a rear longitudinal arm press-fit limit pin (10) is provided above the rear longitudinal arm press-fit support pins (9).

2. The automotive rear trailing arm bushing reverse pressing device according to claim 1, characterized in that: The bushing press-fit upper connecting plate (5) is provided with a through hole; the lower part of the bushing press head (6) is skirt-shaped and the upper part is stepped, and the thinner part of the step shape slides into the through hole, and the shoulder is in contact with the lower surface of the bushing press-fit upper connecting plate (5); a fastening thread hole (15) is provided on the side of the bushing press-fit upper connecting plate (5).

3. The automotive rear trailing arm bushing reverse pressing device according to claim 1, characterized in that: The rear trailing arm assembly positioning unit (7) includes a rear trailing arm bushing counter-pressure positioning pin (13) and a rear trailing arm bushing counter-pressure positioning seat (14). The rear trailing arm bushing counter-pressure positioning seat (14) is fixed to the base plate (8) by bolts, and the rear trailing arm bushing counter-pressure positioning pin (13) is fixed to the rear trailing arm bushing counter-pressure positioning seat (14) by interference fit.

4. The automotive rear trailing arm bushing reverse pressing device according to claim 1, characterized in that: A polyurethane pad (11) is provided on the upper side of the rear trailing arm press-fit support pin (9).

5. The automotive rear trailing arm bushing reverse pressing device according to claim 1, characterized in that: Handles (12) are bolted to both sides of the base plate (8).

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