CN113738857A

CN113738857A - Transmission protective box body for electric automobile

Info

Publication number: CN113738857A
Application number: CN202111295799.8A
Authority: CN
Inventors: 林炯
Original assignee: Hangzhou Chonghe New Energy Technology Co ltd
Current assignee: Hangzhou Chonghe New Energy Technology Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2021-12-03

Abstract

The invention relates to the field of electric automobiles, in particular to a transmission protection box body for an electric automobile, which comprises a bottom plate, a fixed block, a box body, an oil seal ring, a driving shaft and the like; the bottom plate top surface is provided with a pair of fixed block, and common slidingtype is connected with the box on two fixed blocks, and the box both sides are provided with the oil blanket ring, and the rotation type is connected with the driving shaft on the left oil blanket ring. Through the gasbag that sets up, when the vehicle in emergency brake or when bumping, the oil blanket ring receives impact load and is difficult to seal the box, and the gasbag can take place the inflation and block oil leak department, avoids leaking because of the violent shake of car causes the derailleur working oil in the box.

Description

Transmission protective box body for electric automobile

Technical Field

The invention relates to the field of electric automobiles, in particular to a transmission protection box body for an electric automobile.

Background

The transmission is a mechanism for changing the rotation speed and torque from an engine, which can change the transmission ratio of an output shaft and an input shaft by fixing or stepping, and is also called a transmission, and an automatic transmission generally mounted on a vehicle includes a fluid transmission device such as a torque converter as a starting device and a speed change mechanism, which is composed of a planetary gear or a common gear transmission mechanism and a clutch and a brake that are operated by oil pressure, and the fluid transmission device and the speed change mechanism are both provided in a transmission case.

In order to lubricate and cool each part of the transmission mechanism, transmission working oil is distributed and circulated in the transmission case, a sealing ring is generally adopted to form a sealed and oil-tight space in the transmission case, however, when a vehicle is braked suddenly or crashed, the transmission case and the sealing ring are subjected to offset impact load, a slit is easily generated between the sealing ring and the transmission mechanism part, and the transmission case is seriously damaged, so that the oil leakage of the transmission case is caused.

Disclosure of Invention

In view of the above, it is necessary to provide a transmission protection case for an electric vehicle, which can block an oil leakage portion to prevent oil leakage due to severe shaking of the vehicle, can cushion and absorb shock, and can prevent the transmission case from being damaged to generate oil leakage, so as to solve the problems in the related art, which are proposed in the background art, that an offset impact load is applied to the transmission case and a seal ring during emergency braking or collision, and that the transmission case is easily subjected to a slit or damage to generate oil leakage.

The technical scheme is as follows: derailleur protection box for electric automobile, including the bottom plate, still including: the top surface of the bottom plate is provided with a pair of fixed blocks, the two fixed blocks are jointly connected with a box body in a sliding manner, and the box body is used for storing and circularly placing transmission working oil; the oil seal rings are arranged on two sides of the box body and used for sealing transmission working oil in the box body; the oil seal ring on the left side of the driving shaft is in rotary connection with the driving shaft, and the driving shaft is used for inputting power; the driven shaft is rotationally connected with the oil seal ring on the right side and is used for outputting power; the oil leakage prevention mechanism is arranged on the top surface of the bottom plate and used for preventing the working oil of the transmission in the box body from leaking due to severe shaking of the automobile; the bottom plate of the sliding mechanism is provided with the sliding mechanism which is used for controlling the starting of the oil leakage prevention mechanism; anti-shake mechanism, bottom plate top surface fixed mounting have anti-shake mechanism, and anti-shake mechanism is used for preventing the box shake.

As the improvement of the scheme, the oil seal ring is made of synthetic rubber materials and has excellent plasticity, strength and elasticity, and the oil seal ring is used for fully blocking the slits between the driving shaft and the driven shaft and the box body and playing a role in preventing the working oil of the transmission from leaking out of the slits.

As the improvement of above-mentioned scheme, leak protection oil mechanism is including the support frame, rotate the baffle, the solid fixed cylinder, the gasbag, first carriage and link, bottom plate top surface left side fixed mounting has the support frame, the rotation type is connected with the rotation baffle on the support frame, box both sides fixed mounting has two solid fixed cylinders, the common intercommunication has the gasbag on two solid fixed cylinders of homonymy, the driving shaft passes left gasbag, the gasbag on right side is passed to the driven shaft, the sliding type is connected with first carriage on the solid fixed cylinder, two first carriages in left side and the spacing cooperation of rotation baffle, a pair of link of common fixedly connected with on two first carriages of homonymy.

As the improvement of the scheme, the whole rotating guide plate is of an S-shaped structure, the rotating guide plate is provided with an arc sliding groove, the arc sliding groove is used for guiding the first sliding frame, and the first sliding frame moves oppositely or relatively along the rotating direction of the rotating guide plate.

As the improvement of above-mentioned scheme, slide mechanism is including the iron stand, first guide arm, the mount, the second guide arm, the rack, the third guide arm, first reset spring, the nylon rope, ring gear and second reset spring, sliding connection has the iron stand on the bottom plate, the iron stand top is provided with first guide arm, mount fixed mounting is in the bottom plate top surface, mount top symmetry rigid coupling has the second guide arm, sliding connection has the rack on the mount, rack top surface welding has the third guide arm, be connected with first reset spring between rack and the mount, the cover has the nylon rope on the third guide arm, the nylon rope cup joints with first guide arm, the nylon rope contacts with the second guide arm, ring gear rigid coupling is on rotating the baffle, be connected with second reset spring between iron stand and the left fixed block.

As the improvement of above-mentioned scheme, anti-shake mechanism is including first wedge frame, L shape frame, second carriage and buffer, and iron stand top symmetry rigid coupling has first wedge frame, and bottom plate top surface fixed mounting has two pairs of L shape frames, and common sliding type is connected with the second carriage on two L shape frames of homonymy, and first wedge frame contacts with the second carriage, and the symmetry sliding type is connected with buffer on the second carriage.

As the improvement of the scheme, the buffer device comprises a sliding block, a first rubber pad and a first reciprocating spring, the sliding block is symmetrically connected on the second sliding frame in a sliding mode and is in contact with the box body, the first rubber pad is fixedly connected to one side of the sliding block, and the first reciprocating spring is connected between the sliding block and the second sliding frame.

As an improvement of the proposal, the utility model also comprises an anti-abrasion mechanism, the top surface of the bottom plate is fixedly provided with the anti-abrasion mechanism, the anti-abrasion mechanism comprises a supporting plate, a sliding rod and a guide frame, the second is reciprocal spring, the rotating-ring, get oil frame and second wedge frame, bottom plate top surface right side fixed mounting has the backup pad, the slidingtype below of support frame is connected with the slide bar, the same slidingtype is connected with the slide bar in the backup pad, the welding of slide bar one end has the guide frame, be connected with the reciprocal spring of second between guide frame and the support frame, the pivoted type is connected with the rotating-ring on the guide frame, the rigid coupling has two to get oil frames on the rotating-ring, left two are got oil frame and driving shaft sliding type connection, two on right side get oil frame and driven shaft sliding type connection, fixedly connected with second wedge frame on two first carriages in front side, homonymy second wedge frame and guide frame contact.

As an improvement of the scheme, the connecting frame further comprises a stabilizing plate, and the stabilizing plate is welded in the middle of the connecting frame.

As an improvement of the scheme, the improved box is characterized by further comprising a second rubber pad, and the bottom of the box body is provided with the second rubber pad.

The invention has the beneficial effects that:

through the gasbag that sets up, when the vehicle in emergency brake or when bumping, the oil blanket ring receives impact load and is difficult to seal the box, and the gasbag can take place the inflation and block oil leak department, avoids leaking because of the violent shake of car causes the derailleur working oil in the box.

Through the cooperation of first reciprocating spring and first rubber pad, when vehicle emergency brake or bump, through the rebound effect of first reciprocating spring, first rubber pad can be fixed the box chucking to play buffering absorbing effect to the box, avoid the box to take place the damage and the oil leak.

Through the oil taking frame that sets up, get oil after vehicle emergency brake or collision and put up and can scribble derailleur working oil to driving shaft, driven shaft and gasbag on, derailleur working oil can play lubricated and cooling action to driving shaft and driven shaft, avoids driving shaft and driven shaft rotation and its friction to lead to wearing and tearing when the gasbag inflation.

Through the cooperation of steadying plate and second rubber pad, can press from both sides tightly and support the box and make its stable, avoid the box skew that takes place when car emergency brake or bump, the second rubber pad cushions the bottom half simultaneously, further prevents that the box from taking place the damage and the oil leak.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a schematic view of a partially cut-away perspective structure of the oil leakage prevention mechanism of the present invention.

Fig. 4 is a schematic view of a first partially cut-away perspective structure of the present invention.

Fig. 5 is a partial perspective view of the present invention.

Fig. 6 is a schematic sectional perspective view of the oil leakage prevention mechanism of the present invention.

Fig. 7 is a partially disassembled three-dimensional structure diagram of the oil leakage prevention mechanism of the present invention.

Fig. 8 is a partially sectional perspective view of the sliding mechanism of the present invention.

Fig. 9 is a schematic perspective view of the sliding mechanism of the present invention.

Fig. 10 is a schematic partial perspective view of the anti-shake mechanism of the present invention.

Fig. 11 is a schematic perspective view of the anti-shake mechanism of the present invention.

Fig. 12 is a schematic view of a first partially cut-away perspective structure of the wear prevention mechanism of the present invention.

Fig. 13 is a schematic view of a second partially cut-away perspective structure of the wear prevention mechanism of the present invention.

Fig. 14 is a partial perspective view of the wear mechanism of the present invention.

Fig. 15 is a second partially sectional perspective view of the present invention.

Number designation in the figures: 1. a bottom plate, 2, a fixed block, 3, a box body, 4, an oil seal ring, 5, a driving shaft, 6, a driven shaft, 7, an oil leakage prevention mechanism, 71, a support frame, 72, a rotating guide plate, 73, a fixed cylinder, 74, an air bag, 75, a first sliding frame, 76, a connecting frame, 8, a sliding mechanism, 81, an iron frame, 82, a first guide rod, 83, a fixed frame, 84, a second guide rod, 85, a rack, 86, a third guide rod, 87, a first return spring, 88, a nylon rope, 89, a gear ring, 811, a second return spring, 9, an anti-shake mechanism, 91, a first wedge frame, 92, an L-shaped frame, 93, a second sliding frame, 94, a sliding block, 95, a first rubber pad, 96, a first reciprocating spring, 10, an anti-wear mechanism, 1011, a support plate, 101, a sliding rod, 102, a guide frame, 103, a second reciprocating spring, 104, a rotating ring, 105, an oil taking frame, 106 and a second wedge frame, 11. a stabilizing plate 12 and a second rubber pad.

Detailed Description

In order to make the technical solution and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A transmission protective box body for an electric automobile is shown in figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 13 and comprises a bottom plate 1, fixing blocks 2, a box body 3, oil seal rings 4, a driving shaft 5, a driven shaft 6, an oil leakage prevention mechanism 7, a sliding mechanism 8 and an anti-shake mechanism 9, wherein a pair of fixing blocks 2 are arranged on the top surface of the bottom plate 1, the box body 3 used for storing transmission working oil is jointly and slidably connected onto the two fixing blocks 2, the oil seal rings 4 are arranged on two sides of the box body 3, the oil seal rings 4 are used for plugging the box body 3, the driving shaft 5 is rotatably connected onto the oil seal ring 4 on the left side, the driven shaft 6 is rotatably connected onto the oil seal ring 4 on the right side, the oil leakage prevention mechanism 7 is arranged on the top surface of the bottom plate 1, the oil leakage prevention mechanism 7 is used for preventing the transmission working oil in the box body 3 from leaking out, the sliding mechanism 8 is arranged on the bottom plate 1, an anti-shake mechanism 9 for preventing the shaking of the box body 3 is fixedly arranged on the top surface of the bottom plate 1.

Oil leakage prevention mechanism 7 is including support frame 71, rotate the baffle 72, fixed cylinder 73, gasbag 74, first carriage 75 and link 76, bottom plate 1 top surface left side fixed mounting has support frame 71, the last rotation type of rotating of support frame 71 is connected with rotates baffle 72, box 3 both sides fixed mounting has two fixed cylinders 73 that are used for the transport gas, it has gasbag 74 to communicate jointly on two fixed cylinders 73 of homonymy, gasbag 74 is used for plugging oil leak department, driving shaft 5 passes left gasbag 74, driven shaft 6 passes right gasbag 74, the last rotation type of fixed cylinder 73 is connected with first carriage 75, first carriage 75 is used for pushing the air in the fixed cylinder 73 to in the gasbag 74, two first carriages 75 on the left side and the spacing cooperation of rotating the baffle 72, the common fixed connection has a pair of link 76 on two first carriages 75 of homonymy.

The sliding mechanism 8 comprises an iron frame 81, a first guide rod 82, a fixed frame 83, a second guide rod 84, a rack 85, a third guide rod 86, a first return spring 87, a nylon rope 88, a toothed ring 89 and a second return spring 811, the iron frame 81 is connected with the bottom plate 1 in a sliding manner, the first guide rod 82 for guiding is arranged at the top of the iron frame 81, the fixed frame 83 is fixedly arranged at the top of the bottom plate 1, the second guide rod 84 for guiding is symmetrically and fixedly connected at the top of the fixed frame 83, the rack 85 is connected with the fixed frame 83 in a sliding manner, the third guide rod 86 for guiding is welded at the top of the rack 85, the first return spring 87 is connected between the rack 85 and the fixed frame 83, the nylon rope 88 is sleeved on the third guide rod 86, the nylon rope 88 is used for pulling the third guide rod 86 and the rack 85, the nylon rope 88 is sleeved with the first guide rod 82, the nylon rope 88 is contacted with the second guide rod 84, the toothed ring 89 is fixedly connected on the rotating guide plate 72, a second return spring 811 is connected between the iron frame 81 and the left fixed block 2.

The anti-shake mechanism 9 comprises a first wedge frame 91, an L-shaped frame 92, a second sliding frame 93, a sliding block 94, a first rubber pad 95 and a first reciprocating spring 96, the first wedge frame 91 is symmetrically and fixedly connected above the iron frame 81, two pairs of L-shaped frames 92 are fixedly mounted on the top surface of the bottom plate 1, the second sliding frame 93 is connected to the two L-shaped frames 92 on the same side in a sliding mode, the first wedge frame 91 is in contact with the second sliding frame 93, the first wedge frame 91 is used for pushing the second sliding frame 93 and enabling the second sliding frame 93 to move oppositely, the sliding block 94 is connected to the second sliding frame 93 in a sliding mode, the sliding block 94 is in contact with the box 3, the first rubber pad 95 is fixedly connected to one side of the sliding block 94, the first rubber pad 95 is used for clamping the box 3 and damping the box 3, the first reciprocating spring 96 is connected between the sliding block 94 and the second sliding frame 93, and the first reciprocating spring 96 is used for damping the box 3.

The fluid transmission device and the speed change mechanism are arranged in the box body 3, transmission working oil is dispersed and circulated in the box body 3, the driving shaft 5 is an input shaft of the speed change mechanism, the driven shaft 6 is an output shaft of the speed change mechanism, the engine transmits the power of the driving shaft 5 to the driven shaft 6 through the control of the fluid transmission device and the speed change mechanism, and the oil seal ring 4 can block the transmission working oil in the box body 3 in the driving process of the vehicle to prevent the transmission working oil in the box body 3 from leaking.

When the vehicle is braked emergently or collided, the oil seal ring 4 and the box body 3 are impacted, the oil seal ring 4 may leak oil, the iron frame 81 and the device thereon move towards the direction close to the driven shaft 6 under the influence of inertia, the first guide rod 82 pulls the third guide rod 86 and the rack 85 to move towards the direction close to the fixed frame 83 through the nylon rope 88, the rack 85 drives the toothed ring 89 and the rotating guide plate 72 to rotate anticlockwise, the rotating guide plate 72 drives the first sliding frame 75 to move towards each other, the first sliding frame 75 pushes the air in the fixed cylinder 73 into the air bag 74, so that the air bag 74 expands to block the leaked oil, thereby avoiding the leakage of the transmission working oil in the box body 3 caused by the violent shaking of the vehicle, meanwhile, the first wedge frame 91 pushes the second sliding frame 93 and the device thereon to move towards each other, and the first rubber pad 95 can clamp the box body 3 through the rebound action of the first reciprocating spring 96, when the vehicle brakes emergently or collides, the first reciprocating spring 96 and the first rubber pad 95 can buffer the box body 3, and the effect of buffering and shock absorption is achieved.

When the vehicle decelerates or stops running, the compressed second return spring 811 resets to drive the iron frame 81 and the upper device thereof to move towards the direction away from the driven shaft 6, the nylon rope 88 is not tensioned any more, the compressed first return spring 87 resets to drive the rack 85 to move towards the direction away from the fixed frame 83, so that the rack 85 can drive the toothed ring 89 and the rotating guide plate 72 to rotate clockwise, the rotating guide plate 72 drives the first sliding frame 75 to move relatively to reset, and the air bag 74 contracts.

Example 2

Based on embodiment 1, as shown in fig. 12, 13 and 14, the present invention further comprises an anti-wear mechanism 10, the anti-wear mechanism 10 is fixedly mounted on the top surface of the base plate 1, the anti-wear mechanism 10 is used for preventing the airbag 74 from wearing the driving shaft 5 and the driven shaft 6 when expanding, the anti-wear mechanism 10 comprises a support plate 1011, a slide rod 101, a guide frame 102, a second reciprocating spring 103, a rotating ring 104, an oil-fetching frame 105 and a second wedge frame 106, the support plate 1011 is fixedly mounted on the right side of the top surface of the base plate 1, the slide rod 101 is slidably connected below the support frame 71, the slide rod 101 is also slidably connected to the support plate 1011, the guide frame 102 for supporting and guiding is welded at one end of the slide rod 101, the second reciprocating spring 103 is connected between the guide frame 102 and the support frame 71, the second reciprocating spring 103 is also connected between the guide frame 102 and the support plate 1011, the rotating ring 104 is rotatably connected to the guide frame 102, two oil taking frames 105 for taking oil are fixedly connected to the rotating ring 104, the two oil taking frames 105 on the left side are connected with the driving shaft 5 in a sliding mode, the two oil taking frames 105 on the right side are connected with the driven shaft 6 in a sliding mode, the two first sliding frames 75 on the front side are fixedly connected with second wedge-shaped frames 106, the second wedge-shaped frames 106 on the same side are in contact with the guide frame 102, and the second wedge-shaped frames 106 are used for pushing the guide frame 102 and the upper device thereof to move towards the direction close to the box body 3.

When the first sliding frame 75 moves in the opposite direction, the first sliding frame 75 drives the second wedge frame 106 to move towards the direction close to the fixed frame 83, the second wedge frame 106 pushes the guide frame 102 and the upper device thereof to move towards the direction close to the box body 3, so that the oil taking frame 105 extends into the box body 3, transmission working oil in the box body 3 enters the oil taking frame 105, when the first sliding frame 75 drives the second wedge frame 106 to reset, the guide frame 102 and the upper device thereof reset under the action of the second reciprocating spring 103, and then the transmission working oil in the oil taking frame 105 can be brought to the air bag 74 in the rotating process of the driving shaft 5 and the driven shaft 6, and the transmission working oil can play a role in lubricating and cooling the driving shaft 5 and the driven shaft 6, so that the driving shaft 5 and the driven shaft 6 are prevented from rotating and rubbing to cause abrasion when the air bag 74 expands.

Example 3

On the basis of embodiment 2, as shown in fig. 1, 2 and 15, the box body 3 further comprises a stabilizing plate 11 and a second rubber pad 12, the stabilizing plate 11 is welded in the middle of the connecting frame 76, the stabilizing plate 11 is used for clamping and stabilizing the box body 3, the second rubber pad 12 is arranged at the bottom of the box body 3, and the second rubber pad 12 is used for buffering the bottom of the box body 3.

First carriage 75 moves in opposite directions and can drive link 76 and stabilizer plate 11 and move in opposite directions, and stabilizer plate 11 can press from both sides the tight stability that makes of box 3, avoids box 3 skew when car emergency brake or bump, and second rubber pad 12 can support box 3 simultaneously, and when emergency brake or bump, second rubber pad 12 can cushion the bottom of box 3, further prevents that box 3 from taking place the damage.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. Derailleur protection box for electric automobile, including bottom plate (1), characterized by still including: the transmission oil storage tank is characterized by comprising fixing blocks (2), a pair of fixing blocks (2) are arranged on the top surface of the bottom plate (1), a tank body (3) is connected to the two fixing blocks (2) in a sliding mode, and the tank body (3) is used for storing and circularly placing transmission working oil; the oil seal ring (4) is arranged on two sides of the box body (3), and the oil seal ring (4) is used for sealing transmission working oil in the box body (3); the oil seal ring (4) on the left side of the driving shaft (5) is rotatably connected with the driving shaft (5), and the driving shaft (5) is used for inputting power; the driven shaft (6) is rotationally connected with the oil seal ring (4) on the right side of the driven shaft (6), and the driven shaft (6) is used for outputting power; the oil leakage prevention mechanism (7) is arranged on the top surface of the bottom plate (1), and the oil leakage prevention mechanism (7) is used for preventing the working oil of the transmission in the box body from leaking out due to severe shaking of the automobile; the sliding mechanism (8) is arranged on the bottom plate (1), and the sliding mechanism (8) is used for controlling the starting of the oil leakage prevention mechanism (7); anti-shake mechanism (9), bottom plate (1) top surface fixed mounting have anti-shake mechanism (9), and anti-shake mechanism (9) are used for preventing box (3) shake.

2. The transmission guard housing for the electric vehicle as defined in claim 1, wherein the oil seal ring (4) is made of synthetic rubber material, and has excellent plasticity, strength and elasticity, and the oil seal ring (4) is used to substantially block the slits between the driving shaft (5) and the driven shaft (6) and the housing (3) to prevent the transmission operating oil from leaking from the slits.

3. The transmission guard box for electric vehicle as claimed in claim 1, wherein the oil leakage preventing mechanism (7) comprises a support frame (71), a rotating guide plate (72), and a fixed cylinder (73), gasbag (74), first carriage (75) and link (76), bottom plate (1) top surface left side fixed mounting has support frame (71), the rotation type is connected with rotation guide plate (72) on support frame (71), box (3) both sides fixed mounting has two fixed cylinders (73), it has gasbag (74) to communicate jointly on two fixed cylinders (73) of homonymy, left gasbag (74) are passed in driving shaft (5), driven shaft (6) pass gasbag (74) on right side, the sliding connection has first carriage (75) on fixed cylinder (73), two first carriages (75) and rotation guide plate (72) spacing cooperation on left side, a pair of link (76) of common fixed connection has on two first carriages (75) of homonymy.

4. The transmission guard housing for electric vehicles as claimed in claim 3, wherein the rotating guide plate (72) is of an S-shaped structure, and the rotating guide plate (72) is provided with an arc-shaped sliding groove for guiding the first sliding frame (75), and the first sliding frame (75) moves toward or away from each other in accordance with the rotating direction of the rotating guide plate (72).

5. The transmission protective box body for the electric automobile according to claim 1, wherein the sliding mechanism (8) comprises an iron frame (81), a first guide rod (82), a fixing frame (83), a second guide rod (84), a rack (85), a third guide rod (86), a first return spring (87), a nylon rope (88), a toothed ring (89) and a second return spring (811), the iron frame (81) is connected with the bottom plate (1) in a sliding manner, the first guide rod (82) is arranged at the top of the iron frame (81), the fixing frame (83) is fixedly arranged on the top surface of the bottom plate (1), the second guide rod (84) is symmetrically and fixedly connected at the top of the fixing frame (83), the rack (85) is connected with the fixing frame (83) in a sliding manner, the third guide rod (86) is welded at the top surface of the rack (85), the first return spring (87) is connected between the rack (85) and the fixing frame (83), the nylon rope (88) is sleeved on the third guide rod (86), nylon cord (88) cup joints with first guide arm (82), and nylon cord (88) and second guide arm (84) contact, and ring gear (89) rigid coupling is connected with second reset spring (811) on rotating guide plate (72) between iron stand (81) and left fixed block (2).

6. The transmission protection box body for the electric automobile as claimed in claim 1, characterized in that the anti-shake mechanism (9) comprises a first wedge-shaped frame (91), an L-shaped frame (92), a second sliding frame (93) and a buffer device, the first wedge-shaped frame (91) is symmetrically and fixedly connected above the iron frame (81), two pairs of L-shaped frames (92) are fixedly installed on the top surface of the bottom plate (1), the two L-shaped frames (92) on the same side are jointly and slidably connected with the second sliding frame (93), the first wedge-shaped frame (91) is in contact with the second sliding frame (93), and the buffer device is symmetrically and slidably connected on the second sliding frame (93).

7. The transmission guard box of claim 6, wherein the damping device comprises a sliding block (94), a first rubber pad (95) and a first reciprocating spring (96), the sliding block (94) is symmetrically and slidably connected to the second sliding frame (93), the sliding block (94) is in contact with the box (3), the first rubber pad (95) is fixedly connected to one side of the sliding block (94), and the first reciprocating spring (96) is connected between the sliding block (94) and the second sliding frame (93).

8. The transmission protection box body for the electric automobile according to claim 1, characterized by further comprising an anti-abrasion mechanism (10), wherein the anti-abrasion mechanism (10) is fixedly installed on the top surface of the bottom plate (1), the anti-abrasion mechanism (10) comprises a support plate (1011), a slide rod (101), a guide frame (102), a second reciprocating spring (103), a rotating ring (104), an oil taking frame (105) and a second wedge frame (106), the support plate (1011) is fixedly installed on the right side of the top surface of the bottom plate (1), the slide rod (101) is slidably connected below the support frame (71), the slide rod (101) is also slidably connected on the support plate (1011), the guide frame (102) is welded at one end of the slide rod (101), the second reciprocating spring (103) is connected between the guide frame (102) and the support frame (71), the second reciprocating spring (103) is also connected between the guide frame (102) and the support plate (1011), the upper rotating type of the guide frame (102) is connected with a rotating ring (104), two oil taking frames (105) are fixedly connected to the rotating ring (104), the two oil taking frames (105) on the left side are connected with the driving shaft (5) in a sliding mode, the two oil taking frames (105) on the right side are connected with the driven shaft (6) in a sliding mode, the two first sliding frames (75) on the front side are fixedly connected with second wedge-shaped frames (106), and the second wedge-shaped frames (106) on the same side are in contact with the guide frame (102).

9. The transmission protective case body for the electric automobile according to claim 3, further comprising a stabilizing plate (11), wherein the stabilizing plate (11) is welded to the middle of the connecting frame (76).

10. The transmission protective casing for the electric vehicle as claimed in claim 1, further comprising a second rubber pad (12), wherein the second rubber pad (12) is disposed at the bottom of the casing (3).