Particle damping rubber vibration isolator of engine

Abstract

The invention relates to a particle damping rubber vibration isolator of an engine. According to the technical scheme, the upper end face and the lower end face of vibration isolation rubber (3) are in vulcanizing bonding with a corresponding upper connecting plate (2) and a corresponding lower connecting plate (4), a lower connecting bolt (5) is fixed onto the lower plane of the lower connecting plate (4), an upper connecting bolt (1) is fixed onto the upper plane of the upper connecting plate (2) and a damping rod (7) is fixed onto the lower plane of the upper connecting plate (2). The upper connecting bolt (1), the upper connecting plate (2), the vibration isolation rubber (3), the lower connecting plate (4), the lower connecting bolt (5) and the damping rod (7) are coaxially connected. The vibration isolation rubber (3) is a hollow cylinder, the hollow part of the hollow cylinder forms a closed damping cavity (8) with the upper connecting plate (2) and the lower connecting plate (4), particle damping materials (6) are placed in the damping cavity (8) and the particle damping materials (6) occupy 50-85% of the volume of the damping cavity (8). The particle damping rubber vibration isolator of the engine is simple and reliable in structure, convenient to manufacture and low in cost, has the dynamic characteristics of low-frequency high dynamic stiffness and large damping and also has the dynamic characteristics of high-frequency low dynamic stiffness and small damping.

Description

technical field

[0001] The invention belongs to the technical field of engine vibration isolators. In particular, it relates to an engine particle damping rubber vibration isolator. Background technique

[0002] At present, domestic and foreign automobile engine mount systems mainly use ordinary rubber vibration isolators and liquid resistance rubber vibration isolators to isolate the vibration caused by the engine's working process, including: controlling the relatively large low-frequency vibration when the engine is idling; isolating high-frequency vibration In order to reduce the high-frequency vibration and noise in the cabin; limit the excessive displacement of the engine under ground impact conditions, and prevent the engine from colliding with surrounding components. To meet these requirements, an ideal vibration isolator must have the dynamic characteristics of high dynamic stiffness and large damping at low frequencies and the dynamic characteristics of low dynami...

Examples

Embodiment 1

[0021] A particle damping rubber vibration isolator for an engine. The particle damping rubber vibration isolator is as figure 1 As shown, it consists of upper connecting bolt 1, upper connecting plate 2, vibration isolation rubber 3, lower connecting plate 4, lower connecting bolt 5, granular damping material 6 and damping rod 7. The upper end surface and the lower end surface of the vibration isolation rubber 3 are vulcanized and bonded to the corresponding upper connecting plate 2 and lower connecting plate 4, the lower plane of the lower connecting plate 4 is fixed with the lower connecting bolt 5, and the upper plane of the upper connecting plate 2 is fixed with an upper The connecting bolt 1 and the lower plane of the upper connecting plate 2 are fixed with a damping rod 7 . The upper connecting bolt 1, the upper connecting plate 2, the vibration isolation rubber 3, the lower connecting plate 4, the lower connecting bolt 5 and the damping rod 7 are connected with the sa...

Embodiment 2

[0029] A particle damping rubber vibration isolator for an engine. Except following technical parameter, all the other are with embodiment 1.

[0030] The loading amount of the granular damping material 6 is 60-75% of the volume of the damping chamber 8 .

[0031] The material of the vibration-isolation rubber 3 is nitrile rubber.

[0032] The shape of the upper connecting plate 2 is oval, and the shape of the lower connecting plate 4 is the same as that of the upper connecting plate 2 .

[0033] The length of the damping rod 7 is 0.7-0.8 times the height of the vibration-isolation rubber 3, and the cone angle of the free end of the damping rod 7 is 70-100°.

[0034] The shape of the granular damping material 6 is a sphere with a diameter of 0.5-1mm. The particle damping material 6 is made of lead.

[0035] The hollow cylinder is an elliptical cylinder with a central hole, and the central hole is an elliptical hole.

Embodiment 3

[0037] A particle damping rubber vibration isolator for an engine. Except following technical parameter, all the other are with embodiment 1.

[0038] The loading amount of the granular damping material 6 is 70-85% of the volume of the damping chamber 8 .

[0039] The material of the vibration-isolation rubber 3 is neoprene.

[0040] The shape of the upper connecting plate 2 is polygonal, and the shape of the lower connecting plate 4 is the same as that of the upper connecting plate 2 .

[0041] The length of the damping rod 7 is 0.7-0.8 times the height of the vibration-isolation rubber 3, and the cone angle of the free end of the damping rod 7 is 50-80°.

[0042] The shape of the granular damping material 6 is a sphere with a diameter of 1-5mm. The particle damping material 6 is made of copper.

[0043] The hollow cylinder is a prism with a central hole, and the central hole is a polygonal hole.

technical field

[0001] The invention belongs to the technical field of engine vibration isolators. In particular, it relates to an engine particle damping rubber vibration isolator. Background technique

[0002] At present, domestic and foreign automobile engine mount systems mainly use ordinary rubber vibration isolators and liquid resistance rubber vibration isolators to isolate the vibration caused by the engine's working process, including: controlling the relatively large low-frequency vibration when the engine is idling; isolating high-frequency vibration In order to reduce the high-frequency vibration and noise in the cabin; limit the excessive displacement of the engine under ground impact conditions, and prevent the engine from colliding with surrounding components. To meet these requirements, an ideal vibration isolator must have the dynamic characteristics of high dynamic stiffness and large damping at low frequencies and the dynamic characteristics of low dynami...

Examples

Embodiment 1

[0021] A particle damping rubber vibration isolator for an engine. The particle damping rubber vibration isolator is as figure 1 As shown, it consists of upper connecting bolt 1, upper connecting plate 2, vibration isolation rubber 3, lower connecting plate 4, lower connecting bolt 5, granular damping material 6 and damping rod 7. The upper end surface and the lower end surface of the vibration isolation rubber 3 are vulcanized and bonded to the corresponding upper connecting plate 2 and lower connecting plate 4, the lower plane of the lower connecting plate 4 is fixed with the lower connecting bolt 5, and the upper plane of the upper connecting plate 2 is fixed with an upper The connecting bolt 1 and the lower plane of the upper connecting plate 2 are fixed with a damping rod 7 . The upper connecting bolt 1, the upper connecting plate 2, the vibration isolation rubber 3, the lower connecting plate 4, the lower connecting bolt 5 and the damping rod 7 are connected with the sa...

Embodiment 2

[0029] A particle damping rubber vibration isolator for an engine. Except following technical parameter, all the other are with embodiment 1.

[0030] The loading amount of the granular damping material 6 is 60-75% of the volume of the damping chamber 8 .

[0031] The material of the vibration-isolation rubber 3 is nitrile rubber.

[0032] The shape of the upper connecting plate 2 is oval, and the shape of the lower connecting plate 4 is the same as that of the upper connecting plate 2 .

[0033] The length of the damping rod 7 is 0.7-0.8 times the height of the vibration-isolation rubber 3, and the cone angle of the free end of the damping rod 7 is 70-100°.

[0034] The shape of the granular damping material 6 is a sphere with a diameter of 0.5-1mm. The particle damping material 6 is made of lead.

[0035] The hollow cylinder is an elliptical cylinder with a central hole, and the central hole is an elliptical hole.

Embodiment 3

[0037] A particle damping rubber vibration isolator for an engine. Except following technical parameter, all the other are with embodiment 1.

[0038] The loading amount of the granular damping material 6 is 70-85% of the volume of the damping chamber 8 .

[0039] The material of the vibration-isolation rubber 3 is neoprene.

[0040] The shape of the upper connecting plate 2 is polygonal, and the shape of the lower connecting plate 4 is the same as that of the upper connecting plate 2 .

[0041] The length of the damping rod 7 is 0.7-0.8 times the height of the vibration-isolation rubber 3, and the cone angle of the free end of the damping rod 7 is 50-80°.

[0042] The shape of the granular damping material 6 is a sphere with a diameter of 1-5mm. The particle damping material 6 is made of copper.

[0043] The hollow cylinder is a prism with a central hole, and the central hole is a polygonal hole.

Images