Shock isolation device for transmission of electric vehicle

Abstract

The utility model belongs to the field of transmission protection, and particularly relates to a shock isolation device for an electric automobile transmission, which comprises a protective shell, a shock isolation plate is slidably connected to an inner cavity of the protective shell, a shock absorption mechanism is arranged at the bottom of the shock isolation plate, and a transmission mounting shell is arranged at the top of the shock isolation plate. The bottom of the transmission mounting shell is in contact with the top of the shock insulation plate; by arranging the damping mechanism, the transmission can be damped and protected, meanwhile, the protection shell and the transmission mounting shell are matched, the exterior of the transmission can be protected, the transmission is prevented from being damaged due to collision, the service life of the transmission is prolonged, and the problem that dust generates high-frequency vibration in the working process of an existing electric vehicle driving motor is solved. And if the vibration is not effectively isolated, the stability and the service life of the transmission can be directly influenced, and under the influence of the vibration, the vehicle can make abnormal sound, so that the driving experience of a user is influenced.

Description

Technical Field

[0001] The utility model relates to the field of transmission protection, in particular to a vibration isolation device for an electric vehicle transmission. Background Art

[0002] The transmission, also known as the gearbox, is different from the gearbox of traditional fuel vehicles. The gearbox of electric vehicles is usually called a reducer or reduction box. Its main function is to reduce the high-speed rotation speed of the electric motor to a low-speed rotation speed that can be accepted by the car's drive wheels, thereby realizing power transmission.

[0003] The drive motor of an electric vehicle has the characteristics of a wide speed regulation range, and its operation process will generate high-frequency vibrations. If these vibrations are not effectively isolated, they will directly affect the stability and service life of the transmission. In addition, under the influence of vibrations, the vehicle will make abnormal noises, thereby affecting the user's driving experience. Therefore, to address the above problems, a seismic isolation device for an electric vehicle transmission is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology and solve the problem that dust generates high-frequency vibrations during the operation of the existing electric vehicle drive motor, if these vibrations are not effectively isolated, they will directly affect the stability and service life of the transmission, and under the influence of vibrations, the vehicle will make abnormal noises, thereby affecting the user's driving experience. The utility model proposes a seismic isolation device for an electric vehicle transmission.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a seismic isolation device for an electric vehicle transmission, comprising a protective shell, an inner cavity of the protective shell being slidably connected to a seismic isolation plate, a bottom of the seismic isolation plate being provided with a shock absorbing mechanism, a transmission mounting shell being provided on top of the seismic isolation plate, the bottom of the transmission mounting shell being in contact with the top of the seismic isolation plate;

[0006] The shock absorption mechanism includes two dampers and two sliding rods, the two dampers are fixedly installed in the inner cavity of the protective shell, the output ends of the two dampers are fixedly connected to the bottom of the isolation plate, the two ends of the two sliding rods are fixedly connected to the inner wall of the protective shell, the surface of the sliding rod is slidably connected to two sliding sleeves, one side of the sliding sleeve is provided with a spring, the spring sleeve is arranged on the surface of the sliding rod, one end of the spring is fixedly connected to the surface of the sliding sleeve, and the other end of the spring is fixedly connected to the inner wall of the protective shell, the top of the sliding sleeve is fixedly connected to the positioning frame, the inner cavity of the positioning frame is rotatably connected to the support rod through an axle pin, the top of the support rod is rotatably connected to the fixing frame through an axle pin, and the top of the fixing frame is fixedly connected to the bottom of the isolation plate.

[0007] Preferably, four clamping plates are fixedly mounted on the inner cavity of the transmission mounting housing by means of bolts, and a fixing rod is inserted between opposite sides of every two clamping plates.

[0008] Preferably, T-slots are provided on both sides of the fixing rod, a T-block is slidably connected to the inner cavity of the T-slot, a mounting block is fixedly connected to one side of the T-block, the fixing rod is made of metal, and a toughness groove is provided on the surface of the fixing rod.

[0009] By arranging T-slots, T-blocks and mounting blocks, the transmission can be installed in a limited position in the inner cavity of the transmission mounting shell. At the same time, the tough groove is used to facilitate the staff to install the fixing rod in the inner cavity of the card plate.

[0010] Preferably, a protrusion is fixedly connected to the surface of the transmission mounting housing, and a groove for cooperating with the protrusion is formed in the inner cavity of the protective housing.

[0011] Preferably, the inner cavity of the transmission mounting housing is provided with a protective lining, the surface of the protective lining is in contact with the inner wall of the transmission mounting housing, and the material of the protective lining is a foam box.

[0012] By providing a protective lining, the transmission can be protected and prevented from shaking when in use.

[0013] Preferably, a sliding block is fixedly connected to the surface of the transmission mounting housing, and a sliding groove for use with the sliding block is provided on the surface of the protective housing.

[0014] Preferably, there are two fixing brackets, and a retaining rod is fixedly connected between opposite sides of the two fixing brackets.

[0015] The utility model is beneficial in that:

[0016] The utility model provides a shock-absorbing mechanism to provide shock-absorbing protection for the transmission. At the same time, the protective shell and the transmission mounting shell cooperate to protect the outside of the transmission, thereby preventing the transmission from being damaged by bumps, thereby extending its service life. It solves the problem that dust generates high-frequency vibrations during the operation of the existing electric vehicle drive motor. If these vibrations are not effectively isolated, they will directly affect the stability and service life of the transmission. In addition, under the influence of vibrations, the vehicle will make abnormal noises, thereby affecting the user's driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural cross-sectional view of the protective shell and shock absorbing mechanism of the utility model;

[0020] Figure 3 This is a bottom view of the structure of the seismic isolation plate and the shock absorbing mechanism of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the protective shell and protective lining of the present invention;

[0022] Figure 5 This is a structural split cross-sectional view of the clamping plate, fixing rod and mounting block of the present invention.

[0023] In the figure: 1. Protective shell; 2. Isolation plate; 3. Shock absorption mechanism; 301. Damper; 302. Slide rod; 303. Slide sleeve; 304. Spring; 305. Positioning frame; 306. Support rod; 307. Fixing frame; 308. Retaining rod; 4. Transmission mounting shell; 5. Clamping plate; 6. Fixing rod; 7. T-slot; 8. T-block; 9. Mounting block; 10. Tough groove; 11. Bump; 12. Groove; 13. Protective lining; 14. Slider; 15. Slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The following is combined with Figure 1-5 To further explain this application,

[0026] The embodiment of the present application discloses a vibration isolation device for an electric vehicle transmission. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5A seismic isolation device for an electric vehicle transmission includes a protective shell 1, an inner cavity of the protective shell 1 is slidably connected to a seismic isolation plate 2, a bottom of the seismic isolation plate 2 is provided with a shock absorbing mechanism 3, a top of the seismic isolation plate 2 is provided with a transmission mounting shell 4, and the bottom of the transmission mounting shell 4 is in contact with the top of the seismic isolation plate 2;

[0027] The shock absorbing mechanism 3 includes two dampers 301 and two slide bars 302. The two dampers 301 are fixedly mounted in the inner cavity of the protective shell 1. The output ends of the two dampers 301 are fixedly connected to the bottom of the seismic isolation plate 2. The two ends of the two slide bars 302 are fixedly connected to the inner wall of the protective shell 1. The surface of the slide bar 302 is slidably connected to two sliding sleeves 303. A spring 304 is provided on one side of the sliding sleeve 303. The spring 304 is sleeved on the surface of the slide bar 302. One end of the spring 304 is fixedly connected to the surface of the sliding sleeve 303. The other end of the spring 304 is fixedly connected to the surface of the sliding sleeve 303. The end is fixedly connected to the inner wall of the protective shell 1, the top of the sliding sleeve 303 is fixedly connected to the positioning frame 305, the inner cavity of the positioning frame 305 is rotatably connected to the support rod 306 through an axle pin, the top of the support rod 306 is rotatably connected to the fixing frame 307 through an axle pin, and the top of the fixing frame 307 is fixedly connected to the bottom of the isolation plate 2; by setting up the shock-absorbing mechanism 3, the transmission can be shock-absorbing and protected, and at the same time, the protective shell 1 and the transmission mounting shell 4 are used to protect the outside of the transmission to avoid damage caused by collision, thereby extending its service life.

[0028] Reference Figure 1 、 Figure 4 and Figure 5 The inner cavity of the transmission mounting shell 4 is fixed with four clamping plates 5 by bolts, and a fixing rod 6 is inserted between the opposite sides of each two clamping plates 5; through the cooperation between the clamping plates 5 and the fixing rod 6, the transmission in the inner cavity of the transmission mounting shell 4 can be limited, thereby improving the stability of the transmission use.

[0029] Reference Figure 1 、 Figure 4 and Figure 5 , T-slots 7 are provided on both sides of the fixing rod 6, the inner cavity of the T-slot 7 is slidably connected with a T-block 8, and one side of the T-block 8 is fixedly connected with a mounting block 9. The material of the fixing rod 6 is metal, and a tough groove 10 is provided on the surface of the fixing rod 6; by arranging the T-slot 7, the T-block 8 and the mounting block 9, the transmission can be limitedly installed in the inner cavity of the transmission mounting shell 4, and the tough groove 10 is used to facilitate the staff to install the fixing rod 6 in the inner cavity of the card plate 5.

[0030] Reference Figure 1 、 Figure 2 and Figure 4A protrusion 11 is fixedly connected to the surface of the transmission mounting shell 4, and a groove 12 is opened in the inner cavity of the protective shell 1 to cooperate with the protrusion 11; by setting the protrusion 11 and the groove 12 to cooperate with each other, the transmission mounting shell 4 can be limited to prevent the position of the transmission mounting shell 4 from being offset when the transmission mounting shell 4 moves vertically.

[0031] Reference Figure 1 and Figure 4 The inner cavity of the transmission mounting shell 4 is provided with a protective lining 13. The surface of the protective lining 13 contacts the inner wall of the transmission mounting shell 4. The material of the protective lining 13 is a foam box. By providing the protective lining 13, the transmission can be protected to prevent the transmission from shaking during use.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 A slider 14 is fixedly connected to the surface of the transmission mounting shell 4, and a slide groove 15 is provided on the surface of the protective shell 1 for use with the slider 14; by setting the slider 14 and the slide groove 15 to cooperate with each other, the transmission mounting shell 4 can be limited, thereby improving the stability of the vertical movement of the transmission mounting shell 4.

[0033] Reference Figure 3 There are two fixing frames 307 , and a retaining rod 308 is fixedly connected between opposite sides of the two fixing frames 307 ; by setting the retaining rod 308 , the fixing frames 307 can be fixed, thereby improving the stability of the two fixing frames 307 during use.

[0034] Working principle: When in use, the staff places the transmission in the inner cavity of the transmission mounting shell 4. The protective lining 13 can be used to limit the outside of the transmission. Then the fixing rod 6 is inserted into the two card plates 5, and the position of the mounting block 9 is moved to fix the transmission. The transmission mounting shell 4 and the protective shell 1 cooperate to protect the outside of the transmission to prevent the transmission from being damaged by bumps. At the same time, during the driving of the car, the drive motor of the electric car will generate high-frequency vibrations, and the transmission will resonate under the influence of vibration. When the transmission vibrates, it will drive the transmission mounting shell 4 to vibrate. When vibrating, the transmission mounting shell 4 drives the isolation plate 2 to squeeze the fixing frame 307 and the damper 301. After being squeezed, the fixing frame 307 moves downward, driving one end of the four support rods 306 to move downward. The other end of the four support rods 306 drives the sliding sleeve 303 to squeeze the spring 304. The reaction force of the spring 304 cooperates with the damper 301 to reduce shock to the transmission, reducing noise while extending the service life of the transmission.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A vibration isolation device for an electric vehicle transmission, characterized in that: The invention comprises a protective shell (1), wherein the inner cavity of the protective shell (1) is slidably connected to a vibration isolation plate (2), a vibration reduction mechanism (3) is provided at the bottom of the vibration isolation plate (2), a transmission mounting shell (4) is provided at the top of the vibration isolation plate (2), and the bottom of the transmission mounting shell (4) is in contact with the top of the vibration isolation plate (2); The shock absorbing mechanism (3) comprises two dampers (301) and two slide bars (302). The two dampers (301) are fixedly mounted in the inner cavity of the protective shell (1). The output ends of the two dampers (301) are fixedly connected to the bottom of the shock isolation plate (2). Both ends of the two slide bars (302) are fixedly connected to the inner wall of the protective shell (1). The surface of the slide bar (302) is slidably connected to two sliding sleeves (303). A spring (304) is provided on one side of the sliding sleeve (303). The spring (304) is sleeved on the slide bar. (302), one end of the spring (304) is fixedly connected to the surface of the sliding sleeve (303), the other end of the spring (304) is fixedly connected to the inner wall of the protective shell (1), the top of the sliding sleeve (303) is fixedly connected to a positioning frame (305), the inner cavity of the positioning frame (305) is rotatably connected to a support rod (306) through an axle pin, the top of the support rod (306) is rotatably connected to a fixing frame (307) through an axle pin, and the top of the fixing frame (307) is fixedly connected to the bottom of the seismic isolation plate (2).

2. The vibration isolation device for an electric vehicle transmission according to claim 1, characterized in that: Four clamping plates (5) are fixedly mounted on the inner cavity of the transmission mounting housing (4) by means of bolts, and a fixing rod (6) is inserted between opposite sides of every two clamping plates (5).

3. The vibration isolation device for an electric vehicle transmission according to claim 2, characterized in that: Both sides of the fixing rod (6) are provided with T-shaped grooves (7), the inner cavity of the T-shaped groove (7) is slidably connected to a T-shaped block (8), and one side of the T-shaped block (8) is fixedly connected to a mounting block (9). The fixing rod (6) is made of metal, and a toughness groove (10) is provided on the surface of the fixing rod (6).

4. The vibration isolation device for an electric vehicle transmission according to claim 1, characterized in that: A protrusion (11) is fixedly connected to the surface of the transmission mounting shell (4), and a groove (12) is provided in the inner cavity of the protective shell (1) for use with the protrusion (11).

5. The vibration isolation device for an electric vehicle transmission according to claim 1, characterized in that: The inner cavity of the transmission mounting shell (4) is provided with a protective lining (13), the surface of the protective lining (13) contacts the inner wall of the transmission mounting shell (4), and the material of the protective lining (13) is a foam box.

6. The vibration isolation device for an electric vehicle transmission according to claim 1, characterized in that: A sliding block (14) is fixedly connected to the surface of the transmission mounting housing (4), and a sliding groove (15) for use with the sliding block (14) is provided on the surface of the protective housing (1).

7. The vibration isolation device for an electric vehicle transmission according to claim 1, characterized in that: There are two fixing frames (307), and a retaining rod (308) is fixedly connected between opposite sides of the two fixing frames (307).

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