CN216101497U - Elastic suspension device for electric drive bridge - Google Patents
Elastic suspension device for electric drive bridge Download PDFInfo
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- CN216101497U CN216101497U CN202122973355.7U CN202122973355U CN216101497U CN 216101497 U CN216101497 U CN 216101497U CN 202122973355 U CN202122973355 U CN 202122973355U CN 216101497 U CN216101497 U CN 216101497U
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Abstract
The utility model discloses an elastic suspension device for an electric drive bridge, which relates to the field of automobile parts and comprises a support: the support is fixedly arranged on the axle housing assembly, and a threaded hole is formed in the support and is used for connecting the suspension mounting plate; suspending the mounting plate: the connecting plate is provided with a threaded hole and is fixedly connected with a support through a first bolt, and the mounting plate is internally provided with a mounting hole; two elastic sleeves: are respectively arranged at two sides of the mounting hole; connecting a motor plate: the motor is fixedly connected and parallel to the mounting plate, and a connecting hole is formed in the motor; a second bolt: the tail of the second bolt is provided with a locking nut which can compress the elastic sleeve to adjust the damping performance of the system and prevent the elastic sleeve from sliding. The axle housing and the motor are not rigidly connected, so that the shock absorption and shock absorption effects are achieved, the connecting part is not easy to damage, and internal stress is not easy to generate.
Description
Technical Field
The utility model relates to the field of automobile parts, in particular to an elastic suspension device for an electric drive bridge.
Background
With the continuous promotion of the national new energy automobile industry, the application of the electric drive bridge is more and more extensive. In the new forms of energy commercial car field, the electric bridge configuration of present mainstream is the parallel axis structure, and motor parallel arrangement promptly adopts bolted connection in axle housing one side, motor and main reducer, and the motor opposite side passes through the steel sheet and directly is connected with the axle housing, perhaps does not connect with each other.
The suspension scheme of the motor is as follows:
because the electric drive bridge belongs to unsprung mass, when a vehicle encounters bump impact, a corresponding damping device is lacked, the bump impact of the ground to the vehicle is firstly reflected to the electric drive bridge through wheels, and in addition, the parallel shaft type arrangement of the motor causes the motor to generate a longer cantilever, and during impact, the motor can be subjected to larger impact, so that the rigidity of the joint surface of the motor and the main speed reducer is influenced, and the faults of torque attenuation, abnormal spline abrasion and the like are caused.
The rigid connection scheme of the motor is as follows:
for example, chinese patent publication No. CN108944391A discloses a vehicle light-weight electric drive axle assembly and a chassis structure of a commercial vehicle, wherein a suspension assembly is welded through an axle housing, the suspension assembly and a motor are rigidly connected into a whole through an adjusting screw, and a damping gasket is disposed between the motor and the suspension assembly to achieve a damping effect. However, although the damping sheet is added in the connection mode, the connection structure is in bolt connection, the motor body can be directly conducted to the bracket through the bolt, and the damping gasket cannot eliminate the motor frequency; and its structural configuration, during the bolt-up, can cause motor and axle housing to strain each other, produce the stress strain of self, when meetting external impact formula, can produce the stack effect, appearance of acceleration fault.
If chinese utility model patent with publication number CN208812880U, it sets up the support, and bolt and driving motor fixed connection are passed through to one end, and the other end passes through the fastener to be connected on the axle housing, has realized the support of motor. Although the overall rigidity of the motor and the axle housing can be improved by the connection mode, on one hand, when the vehicle is impacted or heavily loaded, the axle housing is easy to deform, large impact force is generated between the motor and the axle housing, and the connection part is easy to damage;
on the other hand, need be connected the steel sheet respectively to the motor and be connected the face with the axle housing when accomplishing the assembly, because motor face and axle housing face position 90 perpendicular gesture, during the assembly, need synthesize two directions of adjustment XY to reach the assembly effect, during the assembly usually, because machining precision, the existence of assembly error, the motor is connected the face and is connected the face out of plumb with the axle housing, force with the steel sheet and fasten, can cause to produce stress deformation between axle housing and the motor, when receiving external force and assaulting, lead to the trouble emergence of axle housing or motor linkage segment more easily. And the highest rotational speed of the motor for the electric drive axle is usually more than 10000rpm, the frequency range of the motor during working is very large, when rigid connection is adopted, the working frequency of the motor can be directly transmitted to the axle housing through the connecting plate, when the frequency of the motor is consistent with that of the axle housing, serious resonance phenomenon can be generated, if the axle meets large impact force, the impact force is excited by the resonance phenomenon, the impact force can be amplified by 3-4 times, and the faults of tearing and the like at the connecting part are easily caused.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide the elastic suspension device for the electric drive bridge, which has good damping effect and is not easy to damage the joint of the motor and the axle housing, and the technical purpose is realized by the following technical scheme:
an elastic suspension device for an electric drive bridge comprises
A support: the support is fixedly arranged on the axle housing assembly and arranged along the length direction of the axle housing assembly, and the support is provided with a threaded hole for connecting the following suspension mounting plate;
suspending the mounting plate: the device comprises a connecting plate and a mounting plate which are perpendicular to each other, wherein the connecting plate is provided with a through hole and is fixedly connected with a support through a first bolt, and the mounting plate is internally provided with a mounting hole;
elastic sleeve: two mounting holes are arranged on the two sides of the mounting hole respectively;
connecting a motor plate: the motor is fixedly connected with the mounting plate and is arranged in parallel with the mounting plate, and a connecting hole is formed in the motor;
a second bolt: the second bolt penetrates through the connecting hole, the two elastic sleeves and the mounting hole, and a locking nut is arranged at the tail of the second bolt and used for preventing the elastic sleeves from sliding.
Further: the second bolt head is located on one side of the motor.
Further: the locking nut is a groove-shaped nut which is abutted against the elastic sleeve.
Further: and the tail part of the second bolt is provided with a through hole along the radial direction of the second bolt, and a cotter pin penetrates through the groove at the end part of the groove-shaped nut and the through hole so as to fix the groove-shaped nut.
Further: the outside of the second bolt is also sleeved with a gasket, and the gasket is limited between the elastic sleeve at the tail end of the second bolt and the locking nut.
Further: the elastic sleeve is made of rubber or polyurethane.
Further: the connecting plate and the mounting plate are integrally formed.
Further: two damping rings are further sleeved outside the second bolt and are respectively located between the mounting hole and the elastic sleeves on the two sides of the mounting hole.
Further: the mounting hole is two-way taper hole that the middle internal diameter is little, and the both ends internal diameter is big, two elastic sleeve, two the damping ring is the annular structure of round platform form, and the great one end of damping ring diameter is inserted to the less one end of elastic sleeve diameter, and the less one end of damping ring diameter inserts in the mounting hole.
Compared with the prior art, the utility model has the following beneficial effects:
1. the axle housing is not rigidly connected with the motor, the structure has the effects of shock absorption and shock absorption, and the connecting part is not easy to damage;
2. the rear axle housing and the motor are fastened, so that internal stress is not easy to generate and damage;
3. elastic sleeve and damping ring all set up to the round platform annular, insert in the taper hole, link up inseparabler, and the wholeness is high.
4. The elastic sleeve can be prevented from sliding by arranging the locking nut, and the compression ratio of the elastic sleeve is controlled by adjusting the position of the locking nut, so that the damping performance of the system is adjusted.
Drawings
FIG. 1 is a schematic illustration of the connection of an electric machine to an axle housing;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is an exploded view of the elastic suspension device.
In the drawings, 1, an axle housing assembly; 2. mounting holes; 3. a motor; 5. connecting holes; 11. a support; 12. suspending the mounting plate; 121. a connecting plate; 122. mounting a plate; 13. a first bolt; 14. a second bolt; 15. a motor connecting plate; 16. fixing the bolt; 17. an elastic sleeve; 18. a damping ring; 19. a gasket; 20. a groove-shaped nut; 21. and a cotter pin.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An elastic suspension device for an electric drive bridge is arranged on one side of an axle housing assembly 1 and used for connecting the axle housing assembly 1 and a motor 3 arranged in parallel with the axle housing assembly, as shown in figure 1.
Referring to fig. 2 and 3, the elastic suspension device comprises
Support 11: the supporting seat 11 is fixedly arranged on the side face of the axle housing assembly 1 and arranged along the length direction of the axle housing assembly 1, and is provided with a threaded hole for connecting the suspension mounting plate 12;
suspension mounting plate 12: the connecting plate 121 and the mounting plate 122 are vertically and fixedly connected with each other, the connecting plate 121 and the mounting plate 122 are integrally formed, in other embodiments, the connecting plate 121 and the mounting plate 122 can also adopt other fixing modes such as welding, bolt connection and the like, the connecting plate 121 is provided with a through hole and is fixedly connected with the support 11 through a first bolt 13, and the mounting plate 122 is internally provided with a mounting hole 2. In this embodiment, a through hole is formed in the mounting plate 122, a mounting sleeve is arranged in the through hole, and a mounting hole 2 is formed in the center of the sleeve. In some other embodiments, the mounting plate 122 is thick enough to directly form the mounting hole 2.
The mounting hole 2 can be a cylindrical shape or a bidirectional taper hole with a thin middle part and thick two ends.
The elastic sleeve 17: the two installing holes are respectively arranged on two sides of the installing hole 2, are cylindrical in shape and are abutted against two sides of the installing hole 2. In some embodiments, the elastic sleeve 17 may have a truncated cone shape corresponding to the mounting hole 2 of the bi-directional taper hole, and the end with a smaller diameter is inserted into the mounting hole 2, and the elastic ring 17 is preferably made of an elastic material such as rubber, polyurethane, or the like.
The two damping rings 18 are respectively positioned between the mounting hole 2 and the elastic sleeves 17 on the two sides of the mounting hole, when the mounting hole 2 is a bidirectional taper hole, the damping rings 18 are also in a circular truncated cone shape, the elastic sleeves 17 are inserted into the damping rings 18, the damping rings 18 are inserted into the mounting hole 2, and the damping rings 18 can improve the damping effect;
motor connecting plate 15: a plurality of mounting threaded holes are arranged in the motor, the motor is fixedly connected with the motor 3 through fixing bolts 16 and is arranged in parallel with the mounting plate 122, and a connecting hole 5 is formed in the motor;
second bolt 14: the second bolt 14 passes through the connecting hole 5, the two elastic sleeves 17 and the mounting hole 2, the tail part of the second bolt is provided with a groove-shaped nut 20 for preventing the elastic sleeves 17 from sliding, the direction of the second bolt is not limited, and the head part of the second bolt is preferably positioned on the side of the motor 3 for saving space.
The tail end of the channel nut 20 is provided with a plurality of open slots, the head of the channel nut abuts against the elastic sleeve 17, and in some embodiments, a gasket 19 is also arranged between the channel nut 20 and the elastic sleeve 17 to ensure the tightness of the channel nut 20. The tail part of the second bolt 14 is provided with a through hole along the radial direction of the second bolt 14, and a cotter 21 passes through the groove at the tail end of the groove-shaped nut 20 and the through hole to fix the groove-shaped nut 20 to prevent the groove-shaped nut 20 from rotating.
The amount of remaining deformability of the elastic sleeve 17 can be controlled by adjusting the tightening length of the groove nut 20 to adjust the amount of compression of the elastic sleeve 17, i.e., to adjust the damping performance of the suspension device.
At installation, the following operations are performed:
1. fixing the motor connecting plate 15 to the motor 3 by a plurality of fixing bolts 16;
2. the damping ring 18 and the elastic sleeve 17 are respectively arranged in the left and right taper holes of the mounting plate 122;
3. a second bolt 14 penetrates through a connecting hole 5 of a motor connecting plate 15 and further penetrates through a hole position in the previous step, a gasket 19 penetrates through the second bolt 14, and a groove-shaped nut 20 is pre-tightened;
4. the first bolt 13 penetrates through the through hole of the connecting plate 121 and is screwed into the threaded hole of the support 11;
5. tightening the groove-shaped nut 20, and determining the tightening torque of the groove-shaped nut 20 according to the required compression amount;
6. the split pin 21 is inserted into the through hole at the tail part of the second bolt 14 to prevent the second bolt 20 from loosening;
7. the first bolt 13 is tightened.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides an electricity drives bridge and uses elasticity suspension device which characterized in that: comprises that
Support (11): the suspension mounting plate is fixedly arranged on the axle housing assembly (1) and arranged along the length direction of the axle housing assembly (1), and the support (11) is provided with a threaded hole for connecting the following suspension mounting plate (12);
suspension mounting plate (12): the connecting plate is characterized by comprising a connecting plate (121) and a mounting plate (122) which are perpendicular to each other, wherein the connecting plate (121) is provided with a through hole and fixedly connected with the support (11) through a first bolt (13), and a mounting hole (2) is formed in the mounting plate (122);
elastic sleeve (17): two mounting holes are arranged and are respectively arranged at two sides of the mounting hole (2);
motor connecting plate (15): the motor is fixedly connected with the motor (3) and arranged in parallel with the mounting plate (122), and a connecting hole (5) is formed in the motor;
second bolt (14): the bolt penetrates through the connecting hole (5), the two elastic sleeves (17) and the mounting hole (2), and a locking nut is arranged at the tail of the second bolt (14) to prevent the elastic sleeves (17) from sliding.
2. The elastic suspension device for an electric drive bridge according to claim 1, wherein: the head of the second bolt (14) is positioned on one side of the motor (3).
3. The elastic suspension device for an electric drive bridge according to claim 1, wherein: the locking nut is a groove-shaped nut (20), and the groove-shaped nut (20) abuts against the elastic sleeve (17).
4. The elastic suspension device for an electric drive bridge according to claim 3, wherein: through holes are formed in the tail portion of the second bolt (14) along the radial direction of the second bolt (14), and a cotter pin (21) penetrates through the groove in the end portion of the groove-shaped nut (20) and the through holes to fix the groove-shaped nut (20).
5. The elastic suspension device for an electric drive bridge according to claim 1, wherein: a gasket (19) is further sleeved outside the second bolt (14), and the gasket (19) is limited between the elastic sleeve (17) at the tail end of the second bolt and the locking nut.
6. The elastic suspension device for an electric drive bridge according to claim 1, wherein: the elastic sleeve (17) is made of rubber or polyurethane.
7. The elastic suspension device for an electric drive bridge according to claim 1, wherein: the connecting plate (121) and the mounting plate (122) are integrally formed.
8. An elastic suspension arrangement for an electric drive bridge according to any one of claims 1-7, characterized in that: two damping rings (18) are further sleeved outside the second bolt (14), and the two damping rings (18) are respectively located between the mounting hole (2) and the elastic sleeves (17) on the two sides of the mounting hole.
9. The elastic suspension device for an electric drive bridge according to claim 8, wherein: mounting hole (2) are middle internal diameter little, and the big two-way taper hole of both ends internal diameter, two elastic sleeve (17), two damping ring (18) are the annular structure of round platform form, and the great one end of damping ring (18) diameter is inserted to the less one end of elastic sleeve (17) diameter, and the less one end of damping ring (18) diameter is inserted in mounting hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122973355.7U CN216101497U (en) | 2021-11-30 | 2021-11-30 | Elastic suspension device for electric drive bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122973355.7U CN216101497U (en) | 2021-11-30 | 2021-11-30 | Elastic suspension device for electric drive bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216101497U true CN216101497U (en) | 2022-03-22 |
Family
ID=80719362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122973355.7U Active CN216101497U (en) | 2021-11-30 | 2021-11-30 | Elastic suspension device for electric drive bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216101497U (en) |
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2021
- 2021-11-30 CN CN202122973355.7U patent/CN216101497U/en active Active
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