Vibration and noise reduction device for gear shifting of transmission

Abstract

The vibration and noise reduction device comprises a transmission shell, a matching shaft mounting hole is formed in the transverse front end face of the transmission shell, and a shifting fork shaft assembly is movably arranged in the matching shaft mounting hole; the step type vibration reduction ring is additionally arranged on the transmission shell, lubricating oil is guided to the buffering oil cavity, the lubricating oil pushes the step type vibration reduction ring to the outer side till the transverse front end face of the step type vibration reduction ring is limited by the fixing disc, therefore, buffering oil pressure is established, and redundant lubricating oil is discharged into a gearbox through the oil passing hole all the time. When the gear shifting fork shaft assembly rushes to the axial rear end face of the step type vibration reduction ring, lubricating oil in the buffering oil cavity absorbs the impact capacity, meanwhile, the vibration reduction ring is made of copper-based alloy to further absorb vibration, and therefore the gear shifting vibration reduction and noise reduction effects of the transmission are achieved. The technical problem that in the prior art, vibration and noise are large during gear shifting of a heavy truck transmission is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle transmission, specifically relates to a transmission gear shifting vibration and noise reduction device. BACKGROUND

[0002] The heavy truck transmission gear shifting generally adopts the contact limiting mode, uses the limiting mechanism and the transmission shell metal impact to confirm the gear shifting in place, and this limiting mode can produce the greater impact force and the obvious noise, and the driver can feel uncomfortable, and it is required to reduce the vibration and the noise when gear shifting as far as possible. CONTENT

[0003] In view of the deficiency of prior art, the utility model aims at providing a transmission gear shifting vibration and noise reduction device to solve the technical problem of the greater vibration and noise when the heavy truck transmission gear shifts.

[0004] In order to solve the above technical problem, the utility model adopts the following technical scheme to realize:

[0005] A transmission gear shifting vibration and noise reduction device, including transmission shell, the lateral front end surface of transmission shell is equipped with the cooperation axle mounting hole, the cooperation axle mounting hole is mobilely provided with the shift fork shaft assembly;

[0006] The stepped vibration ring is sleeved on the shift fork shaft assembly, and the fixed disc is sleeved on the stepped vibration ring;The lateral rear end surface of the fixed disc is fixedly connected with the lateral front end surface of the transmission shell;The stepped vibration ring is equipped with the oil hole;

[0007] The oil pipe hole is formed between the lateral rear end surface of the fixed disc and the stepped vibration ring and the lateral front end surface of the transmission shell;The buffer oil cavity is in communication with the oil pipe.

[0008] The utility model also includes the following technical features:

[0009] The center hole is formed in the center of the stepped vibration ring, and the shift fork shaft assembly is arranged in the center hole.

[0010] The stepped hole is formed in the middle of the fixed disc, and the stepped vibration ring is arranged in the stepped hole.

[0011] The oil pipe hole is formed on the fixed disc, and the oil pipe hole includes the first cylindrical hole and the second cylindrical hole with gradually decreasing diameters, the oil pipe is arranged in the first cylindrical hole, the oil inlet is formed on the side wall of the second cylindrical hole, and the oil inlet is in communication with the oil pipe hole and the stepped hole.

[0012] The aperture of the oil pipe is greater than the aperture of the oil inlet.

[0013] The fixing disc is fixed on the transverse front end surface of the transmission housing by bolts.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] The utility model discloses a step type damping ring is added on the transmission housing, lubricating oil is guided to the buffer oil chamber, and the lubricating oil pushes the step type damping ring to the outside, until the transverse front end surface of the step type damping ring is limited by the fixing disc, thereby establishing buffer oil pressure, and the excessive lubricating oil is discharged to the transmission inside through the oil hole.When the gear shifting fork shaft assembly hits the axial rear end surface of the step type damping ring, the lubricating oil in the buffer oil chamber absorbs the impact capacity, and the damping ring material selects copper base alloy to further absorb the vibration, so that the transmission gear shifting damping and noise reduction effect is achieved, and the technical problem of large vibration and noise during the heavy truck transmission gear shifting in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] Figure 2 It is the structural schematic diagram of the fixing disc in Figure 1

[0018] Figure 3 It is the structural schematic diagram of the step type damping ring of Figure 1

[0019] The meanings of various reference numerals in the drawings are as follows: 1-transmission housing, 2-fork shaft assembly, 3-step type damping ring, 4-fixing disc, 5-oil pipe, 6-buffer oil chamber;

[0020] 11-matching shaft hole, 12-limiting end surface;

[0021] 31-oil hole, 32-center hole;

[0022] 41-step hole, 42-oil pipe hole, 43-oil inlet.

[0023] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION

[0024] It should be noted that all parts in the utility model, in the absence of special description, adopt the parts known in the art.

[0025] The specific embodiments of the utility model are given below, and it should be noted that the utility model is not limited to the following specific embodiments, and any equivalent transformation based on the technical scheme of the application falls within the protection scope of the utility model. ​

[0026] The utility model discloses a kind of shock absorber and noise reduction devices of transmission gear shifting, including transmission housing 1, the lateral front end surface of transmission housing 1 is equipped with cooperation shaft mounting hole 11, cooperation shaft mounting hole 11 It is movably provided with fork shaft assembly 2 in;

[0027] Stepped shock absorber ring 3 is sleeved on fork shaft assembly 2, fixed disc 4 is sleeved on stepped shock absorber ring 3;Fixed disc 4 lateral rear end surface is fixedly connected with the lateral front end surface of transmission housing 1;Stepped shock absorber ring 3 is equipped with oil hole 31 on it;

[0028] Oil pipe hole 42 is equipped on fixed disc 4, and oil pipe 5 is arranged in oil pipe hole 42;Buffer oil chamber 6 is formed between the lateral rear end surface of fixed disc 4 and stepped shock absorber ring 3 and the lateral front end surface of transmission housing 1;Buffer oil chamber 6 is communicated with oil pipe 5.

[0029] In the above technical solution, stepped shock absorber ring 3 is added on transmission housing 1, lubricating oil is introduced to buffer oil chamber 6, lubricating oil pushes stepped shock absorber ring 3 to outside, until the lateral front end surface of stepped shock absorber ring 3 is limited by fixed disc 4, to establish buffer oil pressure, and excess lubricating oil is discharged into transmission case through oil hole 31 all the time.When switching gear fork shaft assembly 2 rushes to the axial rear end surface of stepped shock absorber ring 3, the lubricating oil in buffer oil chamber 6 absorbs the impact capacity, and the vibration is further absorbed by selecting copper-based alloy as the material of shock absorber ring, so that the effect of transmission gear shifting shock absorption and noise reduction is achieved, and the technical problem of large vibration and noise during heavy truck transmission gear shifting in the prior art is solved.

[0030] Center hole 32 is equipped in the center of stepped shock absorber ring 3, and fork shaft assembly 2 is arranged in center hole 32.

[0031] Step hole 41 is equipped in the middle of fixed disc 4, and stepped shock absorber ring 3 is arranged in step hole 41.

[0032] In the above technical solution, stepped shock absorber ring 3 can only move axially in step hole 41, avoiding axial movement of shock absorber ring.

[0033] Oil pipe hole 42 is equipped on fixed disc 4, and oil pipe hole 42 includes first cylindrical hole and second cylindrical hole with gradually decreasing diameter, oil pipe 5 is arranged in first cylindrical hole, and oil inlet 43 is equipped on the side wall of second cylindrical hole, oil inlet 43 is communicated with oil pipe hole 42 and step hole 41.

[0034] In the above technical solution, oil pipe 5 is used to guide lubricating oil.

[0035] The aperture of oil pipe 5 is larger than the aperture of oil inlet 43.

[0036] In the above technical solution, the hole diameter of the hole for introducing lubricating oil is larger than that of the oil inlet hole 43, so as to facilitate the establishment of oil pressure in the buffer oil chamber.

[0037] The fixing disc 4 is fixed on the transverse front end surface of the transmission housing 1 by bolts.

[0038] In the above technical solution, the bolt connection facilitates installation and disassembly.

Claims

1. A vibration and noise reduction device for gear shifting of a transmission, comprising a transmission housing (1), characterized in that, The transverse front end surface of the transmission housing (1) is provided with a matching shaft mounting hole (11), and a shift shaft assembly (2) is movably arranged in the matching shaft mounting hole (11); A stepped damping ring (3) is arranged on the shift shaft assembly (2), and a fixed disc (4) is arranged on the stepped damping ring (3); the transverse rear end surface of the fixed disc (4) is fixedly connected with the transverse front end surface of the transmission housing (1); an oil passage (31) is arranged on the stepped damping ring (3); An oil pipe hole (42) is arranged on the fixed disc (4), and an oil pipe (5) is arranged in the oil pipe hole (42); a buffer oil cavity (6) is formed between the transverse rear end surface of the fixed disc (4) and the stepped damping ring (3) and the transverse front end surface of the transmission housing (1); the buffer oil cavity (6) is in communication with the oil pipe (5).

2. The vibration and noise reducing device for transmission shift according to claim 1, wherein, A central hole (32) is arranged at the center of the stepped damping ring (3), and the shift shaft assembly (2) is arranged in the central hole (32).

3. The vibration and noise reducing device for transmission shift according to claim 1, wherein A stepped hole (41) is arranged in the middle of the fixed disc (4), and the stepped damping ring (3) is arranged in the stepped hole (41).

4. The vibration and noise reducing device for gear shifting of the transmission according to claim 3, wherein An oil pipe hole (42) is arranged on the fixed disc (4), the oil pipe hole (42) comprises a first cylindrical hole and a second cylindrical hole with gradually decreasing diameters, the oil pipe (5) is arranged in the first cylindrical hole, and an oil inlet (43) is arranged on the side wall of the second cylindrical hole, the oil inlet (43) being in communication with the oil pipe hole (42) and the stepped hole (41).

5. The vibration and noise reducing device for gear shifting of the transmission according to claim 4, wherein The aperture of the oil pipe (5) is larger than the aperture of the oil inlet (43).

6. The vibration and noise reducing device for transmission shift according to claim 1, wherein The fixed disc (4) is fixed on the transverse front end surface of the transmission housing (1) by bolts.

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