CN111348095A - Electric steering mechanism with abrasion self-repairing function - Google Patents

Electric steering mechanism with abrasion self-repairing function Download PDF

Info

Publication number
CN111348095A
CN111348095A CN202010253759.6A CN202010253759A CN111348095A CN 111348095 A CN111348095 A CN 111348095A CN 202010253759 A CN202010253759 A CN 202010253759A CN 111348095 A CN111348095 A CN 111348095A
Authority
CN
China
Prior art keywords
nut
screw
gear
retainer
steering mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010253759.6A
Other languages
Chinese (zh)
Inventor
张鹏雷
王玉海
郑旭光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hailing Yuanzhi Technology R & D Co ltd
Original Assignee
Qingdao Hailing Yuanzhi Technology R & D Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Hailing Yuanzhi Technology R & D Co ltd filed Critical Qingdao Hailing Yuanzhi Technology R & D Co ltd
Priority to CN202010253759.6A priority Critical patent/CN111348095A/en
Publication of CN111348095A publication Critical patent/CN111348095A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/04—Steering gears mechanical of worm type
    • B62D3/06—Steering gears mechanical of worm type with screw and nut
    • B62D3/08—Steering gears mechanical of worm type with screw and nut using intermediate balls or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D3/00—Steering gears
    • B62D3/02—Steering gears mechanical
    • B62D3/12—Steering gears mechanical of rack-and-pinion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0421—Electric motor acting on or near steering gear

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

An electric steering mechanism with abrasion self-repairing function comprises a driving motor, a planetary roller screw, a sector gear and an output shaft. An output shaft of the driving motor is connected with a planetary roller screw, the planetary roller screw is connected with a sector gear, and the sector gear is installed on the output shaft. The invention has high working efficiency, small noise pollution and no air leakage and liquid leakage because a hydraulic system is cancelled. Especially on various new energy vehicles, because the power source does not depend on the engine and automatic control is easy to realize, the device has wider application prospect compared with the traditional structure. By adopting the planetary roller mechanism and the lubricating grease with the self-repairing function, the complexity of the steering mechanism is simplified, the overall dimension of the mechanism is reduced, and the service life of the mechanism can be prolonged.

Description

Electric steering mechanism with abrasion self-repairing function
Technical Field
The invention belongs to the technical field of vehicle steering, and particularly relates to an electric steering mechanism with a wear self-repairing function.
Background
The traditional heavy commercial vehicle generally adopts a circulating ball type hydraulic power steering gear, and an engine drives a hydraulic oil pump to provide steering power for the vehicle; the new energy automobile cancels the engine, so the hydraulic oil pump is driven by the motor to provide power for the vehicle steering. Light commercial vehicles mostly adopt a vacuum boosting mode to provide power for steering because of small steering force. In any form, the vehicle is equipped with a hydraulic source that can continuously provide power for the system. During the running process of the vehicle, the steering gear works for a short time, so that the ineffective loss of energy is caused, and the noise of the hydraulic source during working can pollute the environment and cause the fatigue of drivers and passengers.
In order to solve the technical problem, the prior art uses an electric power steering device for a commercial vehicle, the mechanism adopts a circulating ball type structure, when the load of a front shaft of the vehicle is large, the radial size of the structure needs to be greatly increased in order to meet the stress requirement, so that the overall size of the whole steering gear is increased, and the problem that the steering gear cannot be arranged is caused under the condition of limited vehicle installation space, so that the appearance of the electric power steering device is limited by the space on the vehicle.
Disclosure of Invention
In view of the above problems in the prior art, the present invention is directed to an electric power steering apparatus having a wear self-repairing function.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric steering mechanism with abrasion self-repairing function comprises a driving motor, a planetary roller screw, a sector gear and an output shaft. An output shaft of the driving motor is connected with a planetary roller screw, the planetary roller screw is connected with a sector gear, the sector gear is arranged on the output shaft, and the output rotary motion can drive the vehicle to turn.
Furthermore, a speed reducer is arranged inside the driving motor, so that the overall dimension of the mechanism is further reduced, and the installation space is saved.
Furthermore, the other end of the planetary roller screw is connected with a speed reducer, an output shaft of the speed reducer is connected with a steering shaft, and the steering shaft is connected with a steering wheel in a cab.
Furthermore, the planetary roller screw is a standard planetary roller screw which comprises a screw rod, a roller, a nut, a gear ring, a retainer and an elastic retainer ring. A plurality of rollers are arranged between the screw rod and the nut, and the screw rod is connected with the nut through the rollers. Elastic check rings are respectively arranged at two ends of the inner side of the nut. The elastic retainer ring is arranged in a clamp spring groove of the nut. The inner side of the elastic retainer ring is provided with a retainer, the retainer is provided with holes, and two ends of the roller extend into the holes on the corresponding retainer. And the inner side of the retainer is provided with a gear ring, and the rollers are connected through the gear ring. And outer gears are arranged at two ends of the roller and are meshed with the inner teeth on the gear ring.
Further, the planetary roller screw is a non-standard planetary roller screw. The non-standard planetary roller screw comprises a screw rod, rollers, a nut, a retainer and a retainer ring. A plurality of rollers are arranged between the screw rod and the nut, and the screw rod is connected with the nut through the rollers. The rollers are mounted in elongated circular grooves in a cage which separates the rollers. And the outer sides of the two ends of the retainer are respectively provided with a check ring which is fixed on the nut.
Furthermore, the first check ring and the second check ring can be connected with the nut through threads or in interference fit.
Furthermore, the mechanism is a grease lubrication mode, and the lubricating grease contains magnesium hydroxy silicate particles, and the particle size of the magnesium hydroxy silicate particles is less than ten microns. Therefore, the mechanism has a self-repairing function, and the service life of the mechanism is prolonged.
Furthermore, the mechanism adopts a grease lubrication mode, and the lubricating grease contains nano additives such as nano copper powder, nano graphite, nano calcium carbonate, nano PTFE and the like. The mechanism has a self-repairing function and the service life is prolonged.
Furthermore, the lead screw and the nut adopt triangular threads with a 90-degree tooth form angle, and the roller adopts convex arc-shaped external threads. The roller, the screw rod and the nut are in point contact, so that external lubricating grease can easily enter the roller, the screw rod and the nut are stored nearby a friction surface, the lubricating effect of the friction surface can be effectively improved, the friction coefficient is reduced, and the transmission efficiency of the mechanism is further improved.
Furthermore, a rack is processed on the outer side of the nut, and the nut is meshed with the sector gear through a gear rack structure. The sector gear in the mechanism adopts the positive modified gear, so that the bearing capacity of the gear can be improved, and the overall dimension of the gear is reduced, so that the mechanism becomes more compact.
The invention has the beneficial effects that:
1) the invention has high working efficiency, small noise pollution and no air leakage and liquid leakage because a hydraulic system is cancelled.
2) Especially on various new energy vehicles, because the power source does not depend on the engine and automatic control is easy to realize, the device has wider application prospect compared with the traditional structure.
3) The service life of the mechanism can be prolonged by adopting the planetary roller mechanism and the lubricating grease with the self-repairing function.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment and a second embodiment;
FIG. 2 is a cross-sectional view of a standard planetary roller screw;
FIG. 3 is a profile view of a planetary roller screw;
FIG. 4 is a cross-sectional view of a non-standard planetary roller screw;
FIG. 5 is a non-standard planetary ball screw cage profile;
fig. 6 is a schematic structural diagram of a third embodiment and a fourth embodiment.
Reference numerals: 1-driving motor, 2-planetary roller screw, 3-sector gear, 4-output shaft, 5-first retainer, 6-first gear ring, 7-roller, 8-nut, 9-first elastic retainer ring, 10-screw, 11-second gear ring, 12-second retainer, 13-second elastic retainer ring, 14-first retainer ring, 15-second retainer ring, 16-third retainer, 17 reducer and 18-steering shaft.
Detailed Description
For the convenience of understanding, the technical scheme of the invention is further described in detail by embodiments with reference to the attached drawings:
the first embodiment is as follows:
as shown in fig. 1 to 3, an electric power steering mechanism having a wear self-repairing function includes a drive motor 1, a planetary roller screw 2, a sector gear 3, and an output shaft 4.
An output shaft of the driving motor 1 is connected with the planetary roller screw 2, the planetary roller screw 2 is connected with the sector gear 3, and the sector gear 3 is installed on an output shaft 4.
The planetary roller screw 2 is a standard planetary roller screw.
The speed reducer is arranged inside the driving motor 1, so that the overall dimension of the mechanism is further reduced, and the installation space is saved.
The planetary roller screw 2 comprises a screw 10, rollers 7, a nut 8, a first gear ring 6, a second gear ring 11, a first retainer 5, a second retainer 12, a first elastic retainer ring 9 and a second elastic retainer ring 13.
Two ends in the nut 8 are respectively provided with a first elastic retainer ring 9 and a second elastic retainer ring 13; the first elastic retainer ring 9 and the second elastic retainer ring 13 are fixed in a clamp spring groove of the nut 8.
The inner side of the elastic retainer ring I9 is provided with a retainer I5, and the inner side of the elastic retainer ring II 13 is provided with a retainer II 12. The first elastic retainer ring 9 and the second elastic retainer ring 13 can prevent the first retainer 5 and the second retainer 12 from being separated from the nut 8.
The inner sides of the first retainer 5 and the second retainer 12 are respectively provided with a first gear ring 6 and a second gear ring 11.
A plurality of rollers 7 are arranged between the screw rod 10 and the nut 8, and the screw rod 10 is connected with the nut 8 through the rollers 7.
And the two ends of the roller 7 are provided with external gear structures and are meshed with internal teeth on the first gear ring 6 and the second gear ring 11.
The tail ends of the two ends of the roller 7 extend into the holes in the first retainer 5 and the second retainer 12, so that the rollers 7 are always in a separated state in the moving process, and mutual friction is avoided.
The rollers 7 are connected through the first gear ring 6 and the second gear ring 11, when one roller 7 starts to roll, the rotary motion of the roller is transmitted to the other rollers 7 through the first gear ring 6 and the second gear ring 11, all the rollers 7 are ensured to rotate at the same speed, and therefore the friction coefficient between the screw rod 10 and the rollers 7 and between the rollers 7 and the nut 8 is reduced, and the transmission efficiency is improved.
The lead screw 10 and the nut 8 adopt triangular threads with a tooth form angle of 90 degrees, and the roller 7 adopts convex arc-shaped external threads. The roller 7, the screw rod 10 and the nut 8 are in point contact, so that external lubricating grease can easily enter, the roller is stored nearby the friction surface, the lubricating effect of the friction surface can be effectively improved, the friction coefficient is reduced, and the transmission efficiency of the mechanism is further improved.
The mechanism adopts a grease lubrication mode, and the lubricating grease contains magnesium hydroxy silicate particles, and the particle size of the particles is less than ten microns. Therefore, the mechanism has a self-repairing function, and the service life of the mechanism is prolonged.
And a rack is processed on the outer side of a nut 8 in the planetary roller screw 2, and is meshed with the sector gear 3 through a gear-rack structure. The sector gear 3 in the mechanism adopts a positive displacement gear, so that the bearing capacity of the gear can be improved, and the overall dimension of the gear is reduced, so that the mechanism becomes more compact.
The working principle is as follows: when the electric steering mechanism works, the driving motor 1 drives the screw rod 10 in the planetary roller screw rod 2 to rotate, the planetary roller screw rod 2 converts the rotation motion into the linear motion of the nut 8, and the gear rack mechanism consisting of the nut 8 and the sector gear 3 drives the output shaft 4 to move, so that the power is transmitted to a vehicle steering system.
Example two:
as shown in fig. 1, 3, 4, and 5, an electric power steering mechanism having a wear self-repairing function includes a drive motor 1, a planetary roller screw 2, a sector gear 3, and an output shaft 4.
An output shaft of the driving motor 1 is connected with the planetary roller screw 2, the planetary roller screw 2 is connected with the sector gear 3, and the sector gear 3 is installed on an output shaft 4.
The speed reducer is arranged inside the driving motor 1, so that the overall dimension of the mechanism is further reduced, and the installation space is saved.
The planetary roller screw 2 is a non-standard planetary roller screw.
The planetary roller screw 2 comprises a screw 10, rollers 7, a nut 8, a third retainer 16, a first retainer ring 14 and a second retainer ring 15.
The roller 7 is arranged in the third retainer 16, a first retainer ring 14 and a second retainer ring 15 are arranged outside the third retainer 16, and the first retainer ring 14 and the second retainer ring 15 are fixed on the nut 8.
A plurality of rollers 7 are arranged between the screw rod 10 and the nut 8. The screw 10 is connected to the nut 8 via the rollers 7.
The rollers 7 are mounted in elongated circular grooves in the third cage 16, and the rollers 7 are separated by the third cage 16.
The first retainer ring 14 and the second retainer ring 15 can be connected with the nut 8 through threads or interference fit.
A screw rod 10 and a nut 8 in the planetary roller screw rod 2 both adopt triangular threads with a tooth form angle of ninety degrees, and the rollers 7 adopt convex arc-shaped external threads.
The planet roller screw 2 adopts a grease lubrication mode, and the lubricating grease contains nano additives such as nano copper powder, nano graphite, nano calcium carbonate, nano PTFE and the like. The mechanism has a self-repairing function and the service life is prolonged.
The outer side of a special nut 15 of the planetary roller screw 2 is processed with a rack and is meshed with the sector gear 3.
The sector gear 3 adopts a positive displacement gear, so that the volume of the gear is smaller, and the whole mechanism is more compact.
The working principle is as follows:
when the electric steering mechanism works, the driving motor 1 drives the specific screw 14 in the planetary roller screw 2 to rotate, the planetary roller screw 2 converts the rotary motion into the linear motion of the nut 8, and the gear rack mechanism consisting of the nut 8 and the sector gear 3 drives the output shaft 4 to move, so that power is transmitted to a vehicle steering system.
Example three: as shown in fig. 2, 3, and 6, an electric power steering mechanism having a wear self-repairing function includes a drive motor 1, a planetary roller screw 2, a sector gear 3, an output shaft 4, a speed reducer 17, and a steering shaft 18.
An output shaft of the driving motor 1 is connected with one end of the planetary roller screw 2, the planetary roller screw 2 is connected with the sector gear 3, and the sector gear 3 is installed on an output shaft 4.
The planetary roller screw 2 is a standard planetary roller screw.
The other end of the planetary roller screw 2 is connected with a reducer 17, an output shaft of the reducer 17 is connected with a steering shaft 18, and the steering shaft 18 is connected with a steering wheel in a cab.
The planetary roller screw 2 comprises a screw 10, rollers 7, a nut 8, a first gear ring 6, a second gear ring 11, a first retainer 5, a second retainer 12, a first elastic retainer ring 9 and a second elastic retainer ring 13.
Two ends of the nut 8 are respectively provided with a first elastic retainer ring 9 and a second elastic retainer ring 1; the first elastic retainer ring 9 and the second elastic retainer ring 13 are fixed in a clamp spring groove of the nut 8.
The inner side of the elastic retainer ring I9 is provided with a retainer I12, and the inner side of the elastic retainer ring II 13 is provided with a retainer II 5. The first elastic retainer ring 9 and the second elastic retainer ring 13 can prevent the first retainer 5 and the second retainer 12 from being separated from the nut 8.
The inner sides of the first retainer 5 and the second retainer 12 are respectively provided with a first gear ring 6 and a second gear ring 11.
A plurality of rollers 7 are arranged between the screw rod 10 and the nut 8, and the screw rod 10 is connected with the nut 8 through the rollers 7.
And the two ends of the roller 7 are provided with external gear structures and are meshed with internal teeth on the first gear ring 6 and the second gear ring 11.
The tail ends of the two ends of the roller 7 extend into the holes in the first retainer 5 and the second retainer 12, so that the rollers 7 are always in a separated state in the moving process, and mutual friction is avoided.
The rollers 7 are connected through the first gear ring 6 and the second gear ring 11, when one roller 7 starts to roll, the rotary motion of the roller is transmitted to the other rollers 7 through the first gear ring 6 and the second gear ring 11, all the rollers 7 are ensured to rotate at the same speed, and therefore the friction coefficient between the screw rod 10 and the rollers 7 and between the rollers 7 and the nut 8 is reduced, and the transmission efficiency is improved.
The lead screw 10 and the nut 8 adopt triangular threads with a tooth form angle of 90 degrees, and the roller 7 adopts convex arc-shaped external threads. The roller 7, the screw rod 10 and the nut 8 are in point contact, so that external lubricating grease can easily enter, the roller is stored nearby the friction surface, the lubricating effect of the friction surface can be effectively improved, the friction coefficient is reduced, and the transmission efficiency of the mechanism is further improved.
The mechanism adopts a grease lubrication mode, and the lubricating grease contains magnesium hydroxy silicate particles, and the particle size of the particles is less than ten microns. Therefore, the mechanism has a self-repairing function, and the service life of the mechanism is prolonged.
A rack is processed on the outer side of a nut 8 in the planetary roller screw 2, and the sector gear 3 is driven to rotate through a gear-rack structure. The sector gear 3 in the mechanism adopts a positive displacement gear, so that the bearing capacity of the gear can be improved, and the overall dimension of the gear is reduced, so that the mechanism becomes more compact.
The working principle is as follows:
when the electric steering mechanism works, a driver drives the screw rod 10 in the planetary roller screw 2 to rotate through the steering wheel and the steering shaft 18 and the speed reducer 17, meanwhile, the driving motor 1 also drives the screw rod 10 in the planetary roller screw 2 to rotate, the planetary roller screw 2 converts two rotary motions into linear motion of the nut 8, and the rack-and-pinion mechanism consisting of the nut 8 and the sector gear 3 drives the output shaft 4 to move, so that power is transmitted to a vehicle steering system.
Example four:
fig. 3, 4, 5, and 6 show an electric power steering mechanism having a wear self-repairing function, which includes a drive motor 1, a planetary roller screw 2, a sector gear 3, and an output shaft 4.
An output shaft of the driving motor 1 is connected with the planetary roller screw 2, the planetary roller screw 2 is connected with the sector gear 3, and the sector gear 3 is installed on an output shaft 4.
The planetary roller screw 2 is a non-standard planetary roller screw.
The other end of the planetary roller screw 2 is connected with a reducer 17, an output shaft of the reducer 17 is connected with a steering shaft 18, and the steering shaft 18 is connected with a steering wheel in a cab.
The planetary roller screw 2 comprises a screw 10, rollers 7, a nut 8, a third retainer 16, a first retainer ring 14 and a second retainer ring 15.
The roller 7 is arranged in the third retainer 16, a first retainer ring 14 and a second retainer ring 15 are arranged outside the third retainer 16, and the first retainer ring 14 and the second retainer ring 15 are fixed on the nut 8.
A plurality of rollers 7 are arranged between the screw rod 10 and the nut 8, and the screw rod 10 is connected with the nut 8 through the rollers 7.
The rollers 7 are mounted in elongated circular grooves in the third cage 16, and the rollers 7 are separated by the third cage 16.
The first retainer ring 14 and the second retainer ring 15 can be connected with the nut 8 through threads or interference fit.
A screw rod 10 and a nut 8 in the planetary roller screw rod 2 both adopt triangular threads with a thread form angle of 90 degrees, and the roller 7 adopts convex arc-shaped external threads.
The planet roller screw 2 adopts a grease lubrication mode, and the lubricating grease contains nano additives such as nano copper powder, nano graphite, nano calcium carbonate, nano PTFE and the like. The mechanism has a self-repairing function and the service life is prolonged.
And a rack is processed on the outer side of the nut 8 of the planetary roller screw 2 and is meshed with the sector gear 3.
The sector gear 3 adopts a positive displacement gear, so that the volume of the gear is smaller, and the whole mechanism is more compact.
The working principle is as follows:
when the electric steering mechanism works, a driver drives a screw rod 10 in the planetary roller screw 2 to rotate through a steering wheel and a steering shaft 18, meanwhile, the driving motor 1 also drives the screw rod 10 in the planetary roller screw 2 to rotate, the planetary roller screw 2 converts two rotary motions into linear motions of a nut 8, and a rack-and-pinion mechanism consisting of the nut 8 and a sector gear 3 drives an output shaft 4 to move, so that power is transmitted to a vehicle steering system.
The above embodiments are merely illustrative or explanatory of the technical solution of the present invention and should not be construed as limiting the technical solution of the present invention, and it is apparent that various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention. The present invention also encompasses these modifications and variations provided they come within the scope of the claims and their equivalents.

Claims (10)

1. An electric power steering mechanism having a wear self-repairing function, characterized in that: the planetary roller screw is connected with the sector gear, and the sector gear is arranged on the output shaft.
2. The electric power steering mechanism having a wear self-repairing function according to claim 1, characterized in that: the planet roller screw is standard planet roller screw, and standard planet roller screw includes lead screw, roller, nut, ring gear, holder and circlip, be provided with a plurality of rollers between lead screw and the nut, the lead screw passes through the roller with the nut and links to each other, the inboard both ends of nut are provided with circlip respectively, the circlip inboard is provided with the holder, be equipped with the hole on the holder, the both ends of roller stretch into in the hole of corresponding holder, the inboard of holder is provided with the ring gear, links to each other through the ring gear between each roller, the both ends of roller are provided with the external gear, and the internal tooth on external gear and the ring gear meshes mutually.
3. The electric power steering mechanism having a wear self-repairing function according to claim 1, characterized in that: the planetary roller screw is a non-standard planetary roller screw which comprises a screw, rollers, a nut, a retainer and a retainer ring, wherein a plurality of rollers are arranged between the screw and the nut, the screw is connected with the nut through the rollers, each roller is arranged in a long circular groove on the retainer, and the retainer separates each roller. Retainer rings are respectively arranged at two ends of the retainer and are fixed on the nut.
4. The electric power steering mechanism having a wear self-repairing function according to claim 2 or 3, characterized in that: and a speed reducer is arranged in the driving motor.
5. The electric power steering mechanism having a wear self-repairing function according to claim 2 or 3, characterized in that: the other end of the planetary roller screw is connected with a speed reducer, and an output shaft of the speed reducer is connected with a steering shaft.
6. The electric power steering mechanism having a wear self-repairing function according to claim 3, characterized in that: the retainer ring and the nut can be connected through threads or interference fit.
7. The electric power steering mechanism having a wear self-repairing function according to claim 1, characterized in that: the mechanism adopts a grease lubrication mode, the lubricating grease contains magnesium hydroxy silicate particles, and the particle size of the magnesium hydroxy silicate particles is less than 10 um.
8. The electric power steering mechanism having a wear self-repairing function according to claim 3, characterized in that: the mechanism adopts a grease lubrication mode, and the lubricating grease contains nano copper powder, nano graphite, nano calcium carbonate and nano PTFE.
9. The electric power steering mechanism having a wear self-repairing function according to claim 2 or 3, characterized in that: the lead screw and the nut adopt triangular threads with a 90-degree tooth form angle, and the roller adopts convex arc-shaped external threads.
10. The electric power steering mechanism having a wear self-repairing function according to claim 1, characterized in that: the sector gear is a positive displacement gear, and a rack is processed on the outer side of the nut and meshed with the sector gear.
CN202010253759.6A 2020-04-02 2020-04-02 Electric steering mechanism with abrasion self-repairing function Pending CN111348095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010253759.6A CN111348095A (en) 2020-04-02 2020-04-02 Electric steering mechanism with abrasion self-repairing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010253759.6A CN111348095A (en) 2020-04-02 2020-04-02 Electric steering mechanism with abrasion self-repairing function

Publications (1)

Publication Number Publication Date
CN111348095A true CN111348095A (en) 2020-06-30

Family

ID=71191263

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010253759.6A Pending CN111348095A (en) 2020-04-02 2020-04-02 Electric steering mechanism with abrasion self-repairing function

Country Status (1)

Country Link
CN (1) CN111348095A (en)

Similar Documents

Publication Publication Date Title
KR101251215B1 (en) Eddy-current reduction gear
CN102966686B (en) A kind of brake caliper assembly of vehicle electronic parking braking system
CN201342939Y (en) Driving axle for counter balanced forklift truck
CN202451797U (en) Traction gear box for high-speed motor train unit
CN213575373U (en) Engineering truck wheel limit walking planet decelerator
CN105736665A (en) Swing type multistage electric telescopic cylinder
CN108570806B (en) Washing machine speed reduction clutch and washing machine
CN212556478U (en) Electric steering mechanism with abrasion self-repairing function
CN111391914A (en) Double-motor electric direct-drive steering gear
CN106763613A (en) A kind of knuckle reductor
CN204327899U (en) A kind of swing multi-stage motor telescopic cylinder
CN111348095A (en) Electric steering mechanism with abrasion self-repairing function
CN212447766U (en) Screw nut and steering pull rod integrated electric steering device
CN212423270U (en) Double-motor electric direct-drive steering gear
CN201953968U (en) Lubrication structure of differential mechanism planetary gear
CN111391915A (en) Screw nut and steering pull rod integrated electric steering device
CN111348096A (en) Heavy truck electric power steering system
CN202628955U (en) Hollow cylinder roller oscillating tooth speed reducer
CN106671701B (en) Steering drive axle before wheel hub speed reduction
CN102182815A (en) Hypoid gear transmission mechanism
CN114465410A (en) Parallel light-weight electric cylinder structure for excavator
CN212172340U (en) Heavy truck electric power steering system
CN113548026A (en) Device for active braking of vehicle
CN213575407U (en) Low-speed electric vehicle speed reducer
CN220551443U (en) Planetary gear box and speed reducer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination