Auxiliary frame connecting bush mounting structure

Abstract

The utility model belongs to the technical field of automobile manufacturing, particularly relates to an auxiliary frame connecting bush mounting structure, and aims to solve the problems that bushings need to be pressed one by one and an auxiliary frame needs to be positioned for multiple times in the background technology, the auxiliary frame connecting bush mounting structure comprises a base, and a servo motor is arranged at one end of the outer wall of the top of the base. An output shaft of the servo motor is fixedly connected with a lead screw through a coupler, an internal thread plate is in threaded connection with the outer wall of the lead screw, an auxiliary frame positioning seat is fixedly connected with the outer wall of the bottom of the internal thread plate through screws, and positioning holes are formed in the four corners of the outer wall of the top of the auxiliary frame positioning seat. Through cooperation of the servo motor, the lead screw, the internal thread plate, the auxiliary frame positioning seat, the hydraulic push rod and the lower pressing head, one-time synchronous press fitting of a plurality of bushings is achieved, production efficiency and consistency are greatly improved, a positioning hole formed in the top of the auxiliary frame positioning seat is matched with a positioning pin of an auxiliary frame main body, and the service life of the auxiliary frame main body is prolonged. And the quick and accurate positioning of the auxiliary frame main body can be realized.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a subframe connecting bushing mounting structure. Background Technology

[0002] The subframe, as a crucial component of the automotive chassis, plays a vital role in connecting the vehicle body and the suspension system. The installation quality of the connecting bushings directly impacts the vehicle's shock absorption performance and driving stability. Bushings are typically fixed to pre-drilled holes in the subframe using a press-fit process to buffer vibrations and reduce noise. In traditional installation methods, bushings must be press-fitted one by one to their corresponding positions on the subframe, requiring frequent adjustments to the subframe's posture or positioning to ensure the installation accuracy of each bushing.

[0003] The existing technology has some shortcomings: since the bushings need to be pressed one by one, the subframe is prone to positional deviation during multiple positioning adjustments, resulting in misalignment or uneven stress on the bushings. This not only leads to low production efficiency and difficulty in meeting the needs of large-scale manufacturing, but also easily affects the product qualification rate. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides a subframe connecting bushing installation structure, which overcomes the shortcomings of the prior art and effectively solves the problems that the bushings need to be pressed one by one and the subframe needs to be positioned multiple times.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A subframe connecting bushing mounting structure includes a base. A servo motor is installed at one end of the top outer wall of the base, and the output shaft of the servo motor is fixedly connected to a lead screw via a coupling. An internal thread plate is screwed onto the outer wall of the lead screw, and a subframe positioning seat is fixedly connected to the bottom outer wall of the internal thread plate via screws. Positioning holes are provided at the four corners of the top outer wall of the subframe positioning seat. A symmetrically distributed plate frame is welded to the other end of the top outer wall of the base, and adjacent hydraulic push rods are fixedly connected to one side outer wall of the plate frame via screws. A downward pressure head is fixedly connected to the piston rod of the hydraulic push rod.

[0007] Preferably, the subframe body is placed on the top outer wall of the subframe positioning seat, and bushing pressing openings are provided at the four corners of the top outer wall of the subframe body, with bushings provided at the top of the bushing pressing openings.

[0008] Preferably, positioning holes are provided at the four corners of the top outer wall of the subframe positioning seat, and positioning pins are fixedly connected to the four corners of the top outer wall of the subframe body on both sides of the bushing pressing port, with the positioning pins slidably connected to the inner wall of the positioning hole.

[0009] Preferably, a connecting piece is welded to the outer wall of the pressing head, and a guide rod is fixedly connected to the bottom outer wall of the plate frame, the guide rod being slidably connected to the inner wall of the connecting piece.

[0010] Preferably, the bottom of the subframe positioning seat is fixedly connected to symmetrically distributed sliders by screws, and the top outer wall of the base is fixedly connected to symmetrically distributed tracks by screws, with the sliders slidably connected to the outer wall of the tracks.

[0011] Preferably, an array of support seats is welded to the other end of the top outer wall of the base, and the subframe positioning seat is attached to the top outer wall of the support seats.

[0012] Preferably, a motor mount is welded to one end of the top outer wall of the base, and the servo motor is fixedly connected to the top outer wall of the motor mount by screws.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The subframe connecting bushing installation structure of this design achieves simultaneous pressing of multiple bushings in one go through the coordinated operation of servo motor, lead screw, internal thread plate, subframe positioning seat, hydraulic push rod and pressing head. The servo motor drives the lead screw to rotate, which can drive the internal thread plate and subframe positioning seat to move horizontally along the track, thereby accurately delivering the subframe body to the bottom of the hydraulic push rod. The hydraulic push rod can apply vertical pressure to multiple bushings at the same time through the pressing head, avoiding multiple adjustments to the subframe position and greatly improving production efficiency and consistency.

[0015] 2. The subframe connecting bushing installation structure of this design has a positioning hole on the top of the subframe positioning seat that cooperates with the positioning pin of the subframe body to achieve rapid and accurate positioning of the subframe body. At the same time, the sliding connection between the slider and the rail further ensures the stability of the subframe during movement. The support seat provides additional support for the subframe positioning seat to prevent displacement during pressing, reduce the need for manual intervention, and improve installation accuracy and equipment reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the subframe and bushing during the pre-installation of a subframe connecting bushing mounting structure proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the subframe and bushing installation structure of the subframe connecting bushing proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of a subframe positioning seat structure for a subframe connecting bushing mounting structure proposed in this utility model;

[0019] Figure 4This is an enlarged schematic diagram of part A of the subframe connecting bushing mounting structure proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Servo motor; 3. Lead screw; 4. Internal thread plate; 5. Subframe positioning seat; 6. Plate frame; 7. Hydraulic push rod; 8. Lower pressure head; 9. Connecting piece; 10. Guide rod; 11. Positioning hole; 12. Slider; 13. Rail; 14. Subframe body; 15. Bushing; 16. Support seat; 17. Motor seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 Example 1: A subframe connecting bushing mounting structure includes a base 1. A servo motor 2 is installed at one end of the top outer wall of the base 1, and the output shaft of the servo motor 2 is fixedly connected to a lead screw 3 via a coupling. An internal thread plate 4 is screwed onto the outer wall of the lead screw 3, and a subframe positioning seat 5 is fixedly connected to the bottom outer wall of the internal thread plate 4 via screws. Positioning holes 11 are provided at the four corners of the top outer wall of the subframe positioning seat 5. A symmetrically distributed plate frame 6 is welded to the other end of the top outer wall of the base 1, and adjacent hydraulic push rods 7 are fixedly connected to one side outer wall of the plate frame 6 via screws. The piston rod of the hydraulic push rod 7 is fixedly connected to a downward pressure head 8.

[0023] In this embodiment, the servo motor 2 is mounted on the top of the base 1 via the motor mount 17. The output shaft of the servo motor 2 is connected to the lead screw 3 via a coupling. Since the lead screw 3 is screwed to the internal thread plate 4, and the bottom of the internal thread plate 4 is fixed to the sub-frame positioning seat 5 by screws, when the lead screw 3 rotates, the sub-frame positioning seat 5 can move horizontally along the track 13. The servo motor 2 drives the lead screw 3 to rotate, which can send the sub-frame positioning seat 5 to the pressing station. At this time, multiple hydraulic push rods 7 are started synchronously, and vertical pressure is applied to the bushing 15 through the lower pressure head 8 to complete the pressing and reset.

[0024] The subframe positioning seat 5 has a subframe body 14 placed on its top outer wall, and each of the four corners of the top outer wall of the subframe body 14 has a bushing press-fit opening. A bushing 15 is provided on the top of the bushing press-fit opening. Positioning holes 11 are provided at the four corners of the top outer wall of the subframe positioning seat 5, and positioning pins are fixedly connected to the four corners of the top outer wall of the subframe body 14 on both sides of the bushing press-fit opening. The positioning pins are slidably connected to the inner wall of the positioning hole 11.

[0025] The subframe positioning seat 5 has positioning holes 11 at its four corners, and the subframe body 14 is provided with positioning pins at corresponding positions. After being inserted into the positioning holes 11, it can be quickly aligned. The plate frame 6 is welded to the other end of the base 1 to fix the hydraulic push rod 7.

[0026] A connecting piece 9 is welded to the outer wall of the pressing head 8, and a guide rod 10 is fixedly connected to the bottom outer wall of the plate frame 6. The guide rod 10 is slidably connected to the inner wall of the connecting piece 9.

[0027] The hydraulic push rod 7 is fixed to one side of the plate frame 6. The lower pressure head 8 at the end of the piston rod of the hydraulic push rod 7 is slidably connected to the guide rod 10 through the connecting piece 9 to ensure that the downward pressure is vertical and uniform.

[0028] The bottom of the subframe positioning seat 5 is fixedly connected to symmetrically distributed sliders 12 by screws, and the top outer wall of the base 1 is fixedly connected to symmetrically distributed tracks 13 by screws, with the sliders 12 slidably connected to the outer wall of the tracks 13.

[0029] A slider 12 is installed at the bottom of the subframe positioning seat 5, which slides in conjunction with the rail 13 on the base 1 to ensure the accurate movement trajectory of the subframe positioning seat 5.

[0030] The other end of the top outer wall of the base 1 is welded with an array of support seats 16, and the subframe positioning seat 5 is attached to the top outer wall of the support seat 16.

[0031] The support seats 16 are arranged in an array at the other end of the base 1. After the subframe positioning seat 5 moves into place, it fits against the top of the support seats 16 to form multi-point support and prevent overturning during pressing.

[0032] A motor mount 17 is welded to one end of the top outer wall of the base 1, and the servo motor 2 is fixedly connected to the top outer wall of the motor mount 17 by screws.

[0033] Working principle:

[0034] Positioning stage: The subframe body 14 is placed on the subframe positioning seat 5, and the positioning pins at the four corners of the subframe body 14 are inserted into the positioning holes 11 to achieve precise alignment.

[0035] Movement phase: Servo motor 2 starts, drives lead screw 3 to rotate, and drives internal thread plate 4 and sub-frame positioning seat 5 to move horizontally along track 13 to below hydraulic push rod 7. During this process, the sliding cooperation between slider 12 and track 13 ensures smooth movement, and support seat 16 provides additional support.

[0036] Pressing stage: The piston rod of hydraulic push rod 7 extends, and the lower press head 8 moves vertically downward along guide rod 10 through connecting piece 9, while applying uniform pressure to bushings 15 at the four corners of subframe body 14, completing one-time press-fitting. After press-fitting, hydraulic push rod 7 resets, and servo motor 2 reverses the drive screw 3 to move subframe positioning seat 5 back to its initial position, entering the next cycle.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A subframe connecting bushing mounting structure, comprising a base (1), characterized in that, A servo motor (2) is provided at one end of the top outer wall of the base (1), and the output shaft of the servo motor (2) is fixedly connected to a lead screw (3) through a coupling. An internal thread plate (4) is screwed onto the outer wall of the lead screw (3), and a sub-frame positioning seat (5) is fixedly connected to the bottom outer wall of the internal thread plate (4) by screws. Positioning holes (11) are provided at the four corners of the top outer wall of the sub-frame positioning seat (5). A symmetrically distributed plate frame (6) is welded to the other end of the top outer wall of the base (1), and adjacent hydraulic push rods (7) are fixedly connected to one side outer wall of the plate frame (6) by screws. A lower pressure head (8) is fixedly connected to the piston rod of the hydraulic push rod (7).

2. The subframe connecting bushing mounting structure according to claim 1, characterized in that, The subframe positioning seat (5) has a subframe body (14) placed on its top outer wall, and the four corners of the top outer wall of the subframe body (14) are provided with bushing press-fit openings, and a bushing (15) is provided on the top of the bushing press-fit opening.

3. The subframe connecting bushing mounting structure according to claim 1, characterized in that, The four corners of the top outer wall of the subframe positioning seat (5) are provided with positioning holes (11), and the four corners of the top outer wall of the subframe body (14) are fixedly connected with positioning pins on both sides of the bushing pressing port. The positioning pins are slidably connected to the inner wall of the positioning hole (11).

4. The subframe connecting bushing mounting structure according to claim 1, characterized in that, A connecting piece (9) is welded to the outer wall of the pressing head (8), and a guide rod (10) is fixedly connected to the bottom outer wall of the plate frame (6). The guide rod (10) is slidably connected to the inner wall of the connecting piece (9).

5. The subframe connecting bushing mounting structure according to claim 1, characterized in that, The bottom of the subframe positioning seat (5) is fixedly connected to symmetrically distributed sliders (12) by screws, and the top outer wall of the base (1) is fixedly connected to symmetrically distributed tracks (13) by screws, with the sliders (12) slidingly connected to the outer wall of the tracks (13).

6. The subframe connecting bushing mounting structure according to claim 1, characterized in that, The other end of the top outer wall of the base (1) is welded with an array of support seats (16), and the subframe positioning seat (5) is attached to the top outer wall of the support seat (16).

7. The subframe connecting bushing mounting structure according to claim 1, characterized in that, A motor mount (17) is welded to one end of the top outer wall of the base (1), and the servo motor (2) is fixedly connected to the top outer wall of the motor mount (17) by screws.

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