Split type anti-vibration pad and anti-vibration connecting structure of cabin frame and vehicle body longitudinal beam

Abstract

The utility model discloses a split type anti-vibration pad and an anti-vibration connecting structure of a cabin frame and an automobile body longitudinal beam, and belongs to the technical field of automobiles. The problems that in the prior art, when an electronic water pump operates, vibration noise is large, and a proper vibration reduction piece is not arranged between a cabin frame and a frame longitudinal beam are solved. A split type anti-vibration pad comprises a liner tube, an annular upper anti-vibration body and an annular lower anti-vibration body, the liner tube penetrates through an upper inner hole of the upper anti-vibration body and a lower inner hole of the lower anti-vibration body, the upper anti-vibration body comprises a body and a middle ring, the middle ring is arranged on the bottom face of the body, and the outer diameter of the middle ring is smaller than that of the body. The outer diameter of the middle ring is larger than the inner diameter of the lower inner hole of the lower vibration reduction body.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a split vibration-damping pad and a vibration-damping connecting structure of a cabin frame and a vehicle body longitudinal beam. Background Art

[0002] Automobile electronic water pumps are generally installed on the cabin frame and installed in the cabin through the cabin frame, and the cabin frame is generally fixed on the frame longitudinal beam. The electronic water pump will generate certain vibration noise during operation. In order to reduce the impact of the vibration noise generated by the electronic water pump during operation, a vibration-damping pad is generally installed between the electronic water pump and the cabin frame. Although the vibration-damping pad on the electronic water pump can reduce the vibration generated by the operation of the electronic water pump, the vibration-damping pad on the electronic water pump alone cannot meet the vibration reduction requirements, so that the electronic water pump still generates large vibration noise during operation, and causes large vibration noise in the cab. In order to reduce the vibration noise generated by the electronic water pump, we can also choose to install vibration-damping parts between the cabin frame and the frame longitudinal beam, but there is currently a lack of suitable vibration-damping parts between the cabin frame and the frame longitudinal beam to achieve a vibration-damping connection between the cabin frame and the frame longitudinal beam. Summary of the invention

[0003] The utility model aims to provide a split vibration-damping pad and a vibration-damping connection structure of a cabin frame and a vehicle body longitudinal beam, so as to overcome the problems in the prior art that the electronic water pump has large vibration and noise during operation, and lacks a suitable vibration-damping component between the cabin frame and the vehicle body longitudinal beam.

[0004] The utility model is implemented by adopting the following technical scheme: a split vibration damping pad, comprising a liner and an upper vibration damping body and a lower vibration damping body both of which are annular, the liner passes through the upper inner hole of the upper vibration damping body and the lower inner hole of the lower vibration damping body, the upper vibration damping body comprises a main body and an intermediate ring, the intermediate ring is arranged on the bottom surface of the main body, and the outer diameter of the intermediate ring is smaller than the outer diameter of the main body, and the outer diameter of the intermediate ring is larger than the inner diameter of the lower inner hole of the lower vibration damping body.

[0005] Furthermore, the liner is connected to the upper vibration damping body by vulcanization.

[0006] Furthermore, the upper vibration damper body also includes a convex ring, which is arranged on the bottom surface of the intermediate ring, and the outer diameter of the convex ring is smaller than the outer diameter of the intermediate ring. The convex ring is inserted into the lower inner hole of the lower vibration damper body, and the main body, the intermediate ring and the convex ring are integrally formed.

[0007] Furthermore, the convex ring and the lower inner hole of the lower vibration damping body are interference fit.

[0008] Furthermore, a lower gasket is installed at the bottom of the lower vibration damping body.

[0009] Furthermore, the lower gasket is vulcanized and connected to the lower vibration damping body.

[0010] A vibration-damping connection structure for a cabin frame and a vehicle body longitudinal beam, comprising the above-mentioned split vibration-damping pad, and also comprising a cabin frame, a vehicle body longitudinal beam and a bolt, wherein an upper mounting hole is provided on a cabin frame connecting plate of the cabin frame, and a lower mounting hole is provided on a vehicle body longitudinal beam connecting plate of the vehicle body longitudinal beam, the lower vibration-damping body is between the cabin frame connecting plate and the vehicle body longitudinal beam connecting plate, and the lower inner hole of the lower vibration-damping body is respectively aligned with the upper mounting hole and the lower mounting hole, the upper vibration-damping body is on the upper side of the cabin frame connecting plate, and the middle ring is inserted into the upper mounting hole, the bolt passes through a liner, and one end of the bolt is connected to a nut.

[0011] Furthermore, the nut is welded to the lower side of the lower mounting hole of the vehicle body longitudinal beam connecting plate.

[0012] Furthermore, an upper gasket is installed between the upper vibration damping body and the bolt head of the bolt.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can improve the vibration and noise reduction effect between the cabin frame and the vehicle body longitudinal beam by installing the above-mentioned split vibration-damping pad between the cabin frame and the vehicle body longitudinal beam, thereby reducing the transmission of vibration of the electronic water pump on the cabin frame to the vehicle body longitudinal beam and the cab, avoiding the situation that the connection structure between the cabin frame and the vehicle body longitudinal beam does not have an effective vibration-damping part, and solving the problem that the electronic water pump easily causes large vibration and noise pollution in the cab by relying only on the vibration-damping pad between the electronic water pump and the cabin frame;

[0015] The split vibration-damping pad of the utility model has a good vibration-damping effect. When in use, the cabin frame connecting plate is in the space between the upper vibration-damping body and the lower vibration-damping body, and the upper vibration-damping body, the lower vibration-damping body and the cabin frame connecting plate are all fixedly mounted on the vehicle body longitudinal beam connecting plate by bolts and nuts. When the electronic water pump drives the cabin frame to vibrate, it can be well absorbed by the upper vibration-damping body and the lower vibration-damping body. For example, when the cabin frame connecting plate moves upward, the cabin frame connecting plate will squeeze the upper vibration-damping body upward, and when the cabin frame connecting plate moves downward, the cabin frame connecting plate will squeeze the lower vibration-damping body downward. When the cabin frame connecting plate moves left and right, the cabin frame will cause the upper vibration-damping body and the lower vibration-damping body to deform left and right through the liner to absorb vibration.

[0016] The split vibration damping pad described in the utility model is easy to install. During installation, the split vibration damping pad described in the utility model can be first installed in the upper mounting hole of the cabin frame connecting plate. When installing the split vibration damping pad, first place the lower vibration damping body on the lower side of the upper mounting hole of the cabin frame connecting plate, then pass the middle ring of the upper vibration damping body vulcanized with the liner through the upper mounting hole of the cabin frame connecting plate, and insert the convex ring into the lower inner hole of the lower vibration damping body. Since the upper vibration damping body is vulcanized and connected to the liner, the convex ring can more easily achieve an interference fit with the lower inner hole of the lower vibration damping body, thereby achieving the purpose of pre-installing the upper vibration damping body and the lower vibration damping body on the cabin frame connecting plate. When the cabin frame needs to be installed on the vehicle body longitudinal beam, it is only necessary to align the multiple upper mounting holes of the cabin frame connecting plate and the multiple lower mounting holes of the vehicle body longitudinal beam connecting plate one by one, then insert the bolt into the liner of the upper vibration damping body pre-installed in the upper mounting hole, and finally connect the nut on the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the split vibration damping pad of the utility model;

[0018] Figure 2 yes Figure 1 Sectional view at A-A in the middle;

[0019] Figure 3 It is a three-dimensional diagram of the split vibration damping pad of the utility model;

[0020] Figure 4 It is a schematic diagram of the split vibration damping pad of the utility model being installed on the cabin frame 10;

[0021] Figure 5 It is a schematic diagram of the vibration-damping connection structure of the cabin frame 10 and the vehicle body longitudinal beam 11 of the utility model.

[0022] In the figure: 1. upper vibration damper; 2. lower vibration damper; 3. liner; 4. upper inner hole; 5. lower inner hole; 6. body; 7. middle ring; 8. convex ring; 9. lower gasket; 10. cabin frame; 11. vehicle body longitudinal beam; 12. bolt; 13. upper gasket; 14. nut. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] A split vibration damping pad includes a liner 3 and an upper vibration damping body 1 and a lower vibration damping body 2, both of which are annular. The upper vibration damping body 1 and the lower vibration damping body 2 are respectively provided with an upper inner hole 4 and a lower inner hole 5 to form an annular structure. The upper vibration damping body 1 includes a body 6, an intermediate ring 7 and a convex ring 8. The intermediate ring 7 is arranged on the bottom surface of the body 6, and the outer diameter of the intermediate ring 7 is smaller than the outer diameter of the body 6. The convex ring 8 is arranged on the bottom surface of the intermediate ring 7, and the outer diameter of the convex ring 8 is smaller than the outer diameter of the intermediate ring 7.

[0025] The liner 3 passes through the upper inner hole 4 of the upper vibration damper body 1 and the lower inner hole 5 of the lower vibration damper body 2. The liner 3 can provide a certain supporting force to the split vibration damper pad, thereby improving the service life of the split vibration damper pad. The liner 3 is vulcanized and connected to the upper vibration damper body 1, that is, the liner 3 is vulcanized and connected to the main body 6, the middle ring 7 and the convex ring 8 of the upper vibration damper body 1.

[0026] The outer diameter of the intermediate ring 7 is larger than the inner diameter of the lower inner hole 5 of the lower vibration damper 2, and the bottom surface of the intermediate ring 7 contacts the top surface of the lower vibration damper 2, and a certain space is formed between the main body 6 and the lower vibration damper 2, so that the cabin frame connecting plate is between the main body 6 and the lower vibration damper 2. During installation, the cabin frame connecting plate is in the space between the upper vibration damper 1 and the lower vibration damper 2. The convex ring 8 is inserted into the lower inner hole 5 of the lower vibration damper 2, and the convex ring 8 and the lower inner hole 5 of the lower vibration damper 2 are interference fit.

[0027] A lower gasket 9 is installed at the bottom of the lower vibration damper 2 , and the lower gasket 9 is vulcanized and connected to the lower vibration damper 2 .

[0028] A vibration-damping connection structure for a cabin frame and a vehicle body longitudinal beam comprises the split vibration-damping pad described above, and also comprises a cabin frame 10, a vehicle body longitudinal beam 11 and a bolt 12. An upper mounting hole is provided on a cabin frame connecting plate of the cabin frame 10, and a lower mounting hole is provided on a vehicle body longitudinal beam 11 connecting plate of the vehicle body longitudinal beam 11. The upper mounting hole of the cabin frame 10 and the lower mounting hole of the vehicle body longitudinal beam 11 are connected by bolts 12 and nuts 14, and the cabin frame 10 is installed on the vehicle body longitudinal beam 11.

[0029] The lower vibration damper 2 is in the space between the cabin frame connecting plate and the vehicle body longitudinal beam 11 connecting plate, and the lower inner hole 5 of the lower vibration damper 2 is aligned with the upper mounting hole and the lower mounting hole respectively, the main body 6 of the upper vibration damper 1 is on the upper side of the cabin frame connecting plate, and the middle ring 7 of the upper vibration damper 1 is inserted into the upper mounting hole, the bolt 12 passes through the liner 3, and one end of the bolt 12 is connected to the nut 14.

[0030] During installation, the split vibration damping pad of the utility model can be first installed in the upper mounting hole of the cabin frame connecting plate. When installing the split vibration damping pad, first place the lower vibration damping body 2 on the lower side of the upper mounting hole of the cabin frame connecting plate, then pass the middle ring 7 of the upper vibration damping body 1 vulcanized with the liner 3 through the upper mounting hole of the cabin frame connecting plate, and insert the convex ring 8 into the lower inner hole 5 of the lower vibration damping body 2. Since the upper vibration damping body 1 is vulcanized with the liner 3, the convex ring 8 can be easily realized. It is interference fit with the lower inner hole 5 of the lower shock absorber 2, thereby achieving the purpose of pre-installing the upper shock absorber 1 and the lower shock absorber 2 on the cabin frame connecting plate. When the cabin frame 10 needs to be installed on the vehicle body longitudinal beam 11, it is only necessary to align the multiple upper mounting holes of the cabin frame connecting plate and the multiple lower mounting holes of the vehicle body longitudinal beam 11 connecting plate one by one, and then insert the bolt 12 into the liner 3 of the upper shock absorber 1 pre-installed in the upper mounting hole, and finally connect the nut 14 on the bolt 12.

[0031] The nut 14 is welded to the lower side of the lower mounting hole of the connecting plate of the vehicle body longitudinal beam 11. The utility model can facilitate the installation of the cabin frame 10 by pre-welding the nut 14 on the lower side of the lower mounting hole of the connecting plate of the vehicle body longitudinal beam 11. During installation, the bolt 12 is directly passed through the liner 3 and screwed downward into the nut 14 welded on the connecting plate of the vehicle body longitudinal beam 11, without the need to tighten the nut 14 on the bolt 12.

[0032] An upper gasket 13 is installed between the upper vibration damping body 1 and the bolt head of the bolt 12 .

Claims

1. A split vibration damping pad, characterized in that: The invention comprises a liner (3) and an upper vibration damper (1) and a lower vibration damper (2) both of which are annular. The liner (3) passes through an upper inner hole (4) of the upper vibration damper (1) and a lower inner hole (5) of the lower vibration damper (2). The upper vibration damper (1) comprises a main body (6) and an intermediate ring (7). The intermediate ring (7) is arranged on the bottom surface of the main body (6). The outer diameter of the intermediate ring (7) is smaller than the outer diameter of the main body (6). The outer diameter of the intermediate ring (7) is larger than the inner diameter of the lower inner hole (5) of the lower vibration damper (2).

2. The split vibration damping pad according to claim 1, characterized in that: The liner (3) is vulcanized and connected to the upper vibration damping body (1).

3. The split vibration damping pad according to claim 1, characterized in that: The upper vibration damping body (1) further comprises a convex ring (8), the convex ring (8) being arranged on the bottom surface of the intermediate ring (7), and the outer diameter of the convex ring (8) being smaller than the outer diameter of the intermediate ring (7), the convex ring (8) being inserted into the lower inner hole (5) of the lower vibration damping body (2), and the main body (6), the intermediate ring (7) and the convex ring (8) being integrally formed.

4. The split vibration damping pad according to claim 3, characterized in that: The convex ring (8) and the lower inner hole (5) of the lower vibration damping body (2) are interference fit.

5. The split vibration damping pad according to claim 1, characterized in that: A lower gasket (9) is installed at the bottom of the lower vibration damping body (2).

6. The split vibration damping pad according to claim 5, characterized in that: The lower gasket (9) is vulcanized and connected to the lower vibration damping body (2).

7. A vibration-damping connection structure between a cabin frame and a vehicle body longitudinal beam, characterized in that: A split vibration damping pad comprising any one of claims 1 to 6, further comprising a cabin frame (10), a vehicle body longitudinal beam (11) and a bolt (12), wherein an upper mounting hole is provided on a cabin frame connecting plate of the cabin frame (10), and a lower mounting hole is provided on a vehicle body longitudinal beam (11) connecting plate of the vehicle body longitudinal beam (11), wherein the lower vibration damping body (2) is between the cabin frame connecting plate and the vehicle body longitudinal beam (11) connecting plate, and the hole of the lower vibration damping body (2) is respectively aligned with the upper mounting hole and the lower mounting hole, wherein the upper vibration damping body (1) is on the upper side of the cabin frame connecting plate, and the intermediate ring (7) is inserted into the upper mounting hole, and the bolt (12) passes through the liner (3), and one end of the bolt (12) is connected to a nut (14).

8. The vibration-damping connection structure of the cabin frame and the vehicle body longitudinal beam according to claim 7, characterized in that: The nut (14) is welded to the lower side of the lower mounting hole of the connecting plate of the vehicle body longitudinal beam (11).

9. The vibration-damping connection structure of the cabin frame and the vehicle body longitudinal beam according to claim 7, characterized in that: An upper gasket (13) is installed between the upper vibration damping body (1) and the bolt head of the bolt (12).

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