CN203127140U - Large-torque ball screw electric steering machine - Google Patents
Large-torque ball screw electric steering machine Download PDFInfo
- Publication number
- CN203127140U CN203127140U CN 201220668462 CN201220668462U CN203127140U CN 203127140 U CN203127140 U CN 203127140U CN 201220668462 CN201220668462 CN 201220668462 CN 201220668462 U CN201220668462 U CN 201220668462U CN 203127140 U CN203127140 U CN 203127140U
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- CN
- China
- Prior art keywords
- push rod
- pedestal
- screw
- electric steering
- steering machine
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- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a large-torque ball screw electric steering machine which utilizes the characteristics of high efficiency, high transmission precision and the like of a ball screw to meet the requirements of being lighter and having greater output to the electric steering machine by a modern airplane. The large-torque ball screw electric steering machine comprises a motor, a steering machine seat and a transmission device arranged in the steering machine seat, wherein the steering machine seat comprises a base and a rear end cover; the transmission device comprises a small gear, a large gear, a screw rod, a push rod and a guide device; the small gear is fixedly connected with an output shaft of the motor; the small gear and the large gear are engaged with each other; one end of the screw rod is coaxially and fixedly connected with the large gear; one end of the push rod, which stretches out of the base, is provided with a rotary shaft hole; the other end of the push rod is provided with a blind hole with an inner thread; the other end of the screw rod stretches into the blind hole to form a ball screw structure with the push rod; the guide device comprises two guide grooves which are symmetrically and axially arranged on the outer side face of the push rod, and two guide blocks arranged on the base; and the motor and the base are located at the same side of the rear end cover.
Description
Technical field
The utility model relates to a kind of electric steering gear.
Background technology
Contemporary aircraft requires electric steering gear under the identical appearance size, and weight is lighter and have a bigger output torque.
Summary of the invention
In order to satisfy contemporary aircraft to lighter, the bigger requirement of output of electric steering gear, the utility model provides a kind of high pulling torque ball-screw electric steering gear, has utilized characteristics such as the high efficiency of ball-screw, high transmission accuracy.
Technical solution of the present utility model:
A kind of high pulling torque ball-screw electric steering gear comprises motor 1, steering wheel seat and is arranged on the interior driving device of steering wheel seat that described steering wheel seat comprises pedestal 7 and rear side housing 5, and its special character is:
Described driving device comprises miniature gears 2, big gear wheel 3, screw rod 4, push rod 6 and guide piece;
Described miniature gears 2 and coaxial being connected of motor 1 output shaft;
Described miniature gears 2 and big gear wheel 3 are meshing with each other;
One end of described screw rod 4 and big gear wheel 3 coaxial being connected;
Described push rod 6 can endwisely slip in pedestal 7 and an end stretches out pedestal 7;
The end that described push rod 6 stretches out pedestal 7 is provided with shaft hole 8, and described push rod 6 other ends are provided with tapped blind hole, and the other end of described screw rod 4 constitutes ball screw arrangement with push rod 6 after stretching into blind hole;
Described guide piece comprises two symmetries and the guide grooves 10 that axially arrange that are arranged on the push rod lateral surface, is arranged on two orienting lugs 9 on the pedestal, and described two orienting lugs 9 are positioned at push rod 6 and stretch out the end of pedestal and embed corresponding guide groove 10 respectively.
Above-mentioned motor and pedestal are positioned at the homonymy of rear side housing 5.
The material of above-mentioned push rod is steel, and the material of described orienting lug is copper.
The advantage that the utility model has:
1, the utility model has utilized characteristics such as the high efficiency of ball-screw, high transmission accuracy, and a kind of big output torque electric steering gear of design can reach 700Nm through the max. output torque of testing this electric steering gear.
2, the utility model electric steering gear utilizes ball-screw as gear unit, is brand-new application mode in the electric steering gear design.Under identical appearance size, identical weight required, the utility model had improved running efficiency and the output torque of electric steering gear.The harmonic reduction mode is adopted in electric steering gear transmission in the past, and efficient only is about 50%, and torque peak only is about 100Nm, adopts after the ball-screw type of drive, and efficient can reach 70%, and moment of torsion can reach 700Nm, and the transmission accuracy height.
3, the utility model is done integrated design with push rod and feed screw nut, has saved the space.
4, the reliable and stable operation of electric steering gear is guaranteed in the design of guide piece of the present utility model.
5, the utility model electric steering gear has characteristics simple in structure, in light weight, that output torque is big.
Description of drawings
Fig. 1 is the structural representation of high pulling torque ball-screw electric steering gear of the present invention;
Fig. 2 is the upward view of Fig. 1;
Wherein Reference numeral is: 1-motor, 2-miniature gears, 3-big gear wheel, 4-screw rod, 5-rear side housing, 6-push rod, 7-pedestal, 8-shaft hole, 9-orienting lug, 10-guide groove.
The specific embodiment
A kind of high pulling torque ball-screw electric steering gear comprises motor 1, steering wheel seat and is arranged on the interior driving device of steering wheel seat that described steering wheel seat comprises pedestal 7 and rear side housing 5, and driving device comprises miniature gears 2, big gear wheel 3, screw rod 4, push rod 6 and guide piece; Miniature gears 2 and coaxial being connected of motor 1 output shaft; Miniature gears 2 and big gear wheel 3 are meshing with each other; One end of screw rod 4 and big gear wheel 3 coaxial being connected; Push rod 6 can endwisely slip in pedestal 7 and an end stretches out pedestal 7; The end that push rod 6 stretches out pedestal 7 is provided with shaft hole 8, and push rod 6 other ends are provided with tapped blind hole, and the other end of screw rod constitutes ball screw arrangement with push rod after stretching into blind hole; Guide piece comprises two symmetries and the guide grooves 10 that axially arrange that are arranged on the push rod lateral surface, be arranged on 9, two orienting lugs 9 of two orienting lugs on the pedestal is positioned at push rod and stretches out the end of pedestal and embed corresponding guide groove respectively.Motor and pedestal are positioned at the homonymy of rear side housing.The material of push rod is steel, and the material of described orienting lug is copper.
Principle of work of the present utility model:
Ball-screw is a brand-new application direction in electric steering gear the utility model, can improve the efficient of electric steering gear significantly by the application of ball-screw, thereby reduces complete machine weight.The drive path of ball-screw electric steering gear is motor-miniature gears-big gear wheel-screw rod-push rod (nut).Push rod (nut) forms the rotating shaft formation rotation that thrust promotes the back.This ball-screw electric steering gear as depicted in figs. 1 and 2.
Because ball-screw is converted into the straight-line motion of push rod (nut) with the rotation of gear screw rod, free state lower nut (push rod) may rotate and nut can not unrestrictedly prolong, so be necessary to design actv. guiding and anti-shedding mechanism.The design guide function and slip-off preventing function are attached to one, utilize the bearing fit of guide groove on the nut (push rod) and orienting lug to realize guide function.When while guide groove limited length, orienting lug touch the guide groove end, the straight-line motion of push rod (nut) will be limited, thereby realize the slip-off preventing of push rod (nut).
The raising of reliable and precision is conducive in the design of orienting lug profile, size to lead.With respect to other guidance mode, adopt sunk key guiding, bidirectional arrangements in the configuration design of orienting lug, flush fit is adopted in arranging of relevant fit dimension, and these designs are conducive to improve the electric steering gear transmission accuracy.The precision that the selection of material is conducive to electric steering gear improves and self-protection.The gear screw rod is main stressed member, so material is steel, is defined as copper through contrast orienting lug material.On transmission accuracy, owing to adopt interference fit, copper spare in motion process (orienting lug) will initiatively adapt to the steel part nut on the one hand, thereby improves kinematic accuracy; On the slip-off preventing function, the feed screw nut of steel clashes into guide and limit piece made of copper during maloperation on the other hand, and steel part is indeformable, and the distortion of copper spare can be played the protection to the higher steel nut (push rod) of cost.
Claims (3)
1. a high pulling torque ball-screw electric steering gear comprises motor (1), steering wheel seat and is arranged on the interior driving device of steering wheel seat, and described steering wheel seat comprises pedestal (7) and rear side housing (5), it is characterized in that:
Described driving device comprises miniature gears (2), big gear wheel (3), screw rod (4), push rod (6) and guide piece;
Described miniature gears (2) and coaxial being connected of motor (1) output shaft;
Described miniature gears (2) and big gear wheel (3) are meshing with each other;
One end of described screw rod (4) and coaxial being connected of big gear wheel (3);
Described push rod (6) can endwisely slip in pedestal (7) and an end stretches out pedestal (7);
The end that described push rod (6) stretches out pedestal (7) is provided with shaft hole (8), and described push rod (6) other end is provided with tapped blind hole, and the other end of described screw rod (4) constitutes ball screw arrangement with push rod (6) after stretching into blind hole;
Described guide piece comprises two symmetries and the guide grooves (10) that axially arrange that are arranged on the push rod lateral surface, is arranged on two orienting lugs (9) on the pedestal, and described two orienting lugs (9) are positioned at push rod (6) and stretch out the end of pedestal and embed corresponding guide groove (10) respectively.
2. high pulling torque ball-screw electric steering gear according to claim 1, it is characterized in that: described motor and pedestal are positioned at the homonymy of rear side housing (5).
3. high pulling torque ball-screw electric steering gear according to claim 1 and 2, it is characterized in that: the material of described push rod is steel, the material of described orienting lug is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668462 CN203127140U (en) | 2012-12-03 | 2012-12-03 | Large-torque ball screw electric steering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668462 CN203127140U (en) | 2012-12-03 | 2012-12-03 | Large-torque ball screw electric steering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203127140U true CN203127140U (en) | 2013-08-14 |
Family
ID=48935143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220668462 Expired - Lifetime CN203127140U (en) | 2012-12-03 | 2012-12-03 | Large-torque ball screw electric steering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203127140U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270607A (en) * | 2015-11-09 | 2016-01-27 | 湖北航天技术研究院总体设计所 | Helm system locking device |
| CN110289728A (en) * | 2019-06-05 | 2019-09-27 | 徐州天泓传动设备有限公司 | A kind of electric pushrod |
| CN110979620A (en) * | 2019-12-13 | 2020-04-10 | 云南昆船机械制造有限公司 | Linear electric steering engine for rudder angle control device |
| CN111903294A (en) * | 2020-08-14 | 2020-11-10 | 上海联适导航技术有限公司 | Control device for unmanned agricultural machinery |
-
2012
- 2012-12-03 CN CN 201220668462 patent/CN203127140U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270607A (en) * | 2015-11-09 | 2016-01-27 | 湖北航天技术研究院总体设计所 | Helm system locking device |
| CN110289728A (en) * | 2019-06-05 | 2019-09-27 | 徐州天泓传动设备有限公司 | A kind of electric pushrod |
| CN110979620A (en) * | 2019-12-13 | 2020-04-10 | 云南昆船机械制造有限公司 | Linear electric steering engine for rudder angle control device |
| CN110979620B (en) * | 2019-12-13 | 2023-09-15 | 云南昆船机械制造有限公司 | Linear electric steering engine for rudder angle control device |
| CN111903294A (en) * | 2020-08-14 | 2020-11-10 | 上海联适导航技术有限公司 | Control device for unmanned agricultural machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |