CN204533415U - A kind of electric steering engine ball-screw transmission mechanism loading flexible damping - Google Patents
A kind of electric steering engine ball-screw transmission mechanism loading flexible damping Download PDFInfo
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- CN204533415U CN204533415U CN201520211559.9U CN201520211559U CN204533415U CN 204533415 U CN204533415 U CN 204533415U CN 201520211559 U CN201520211559 U CN 201520211559U CN 204533415 U CN204533415 U CN 204533415U
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Abstract
The utility model relates to a kind of electric steering engine ball-screw transmission mechanism loading flexible damping, servos control technical field.Ball screw (5) two ends are loaded onto respectively 1 angular contact ball bearing (4); Angular contact ball bearing (4) outer ring of ball screw (5) one end is held out against on steering wheel housing (6), elastic element (3) is withstood on ball screw (5) the other end angular contact ball bearing (4) outer ring; Controlling device (2) is connected with steering wheel housing (6) and compresses elastic element (3).Utilize controlling device (2) to adjust the pressure of elastic element (3), thus compress the outer ring of angular contact ball bearing (4), make angular contact ball bearing (4) have certain pretightening force; Reached the object of the flexible pretension making ball screw (5) by the pretightening force of angular contact ball bearing (4), eliminate the gap at ball screw (5) two ends, stable drive, accurately, thus ensure the performance index of steering gear system.
Description
Technical field
The utility model relates to a kind of electric steering engine ball-screw transmission mechanism loading flexible damping, servos control technical field.
Background technique
Using ball screw as in the Electrodynamic Rudder System of deceleration component, ball screw rotates and drives the slide block on ball screw to do alternating translational movement, thus promotes the rotation of steering wheel output shaft.In transmission process, ball screw can be subject to steering wheel output shaft reaction force acts, when ball screw rotates to different direction, slipper push steering wheel output shaft on ball screw rotates to different direction, so in steering wheel working procedure, ball screw can be subject to the reciprocating of two opposite direction active forces.When ball screw sense of rotation is changed, the reaction force direction that ball screw is subject to also changes, if now there is gap at ball screw two ends, then can produce ball screw to move forward and backward because of the change of Impact direction, the direct transmission accuracy affecting steering wheel, affect steering gear system control accuracy and dynamic performance index, overshoot is large to cause steering gear system to occur, the faults such as poor stability.For solving the problem, traditional method is that the bearing at compression ball screw two ends is to eliminate gap, this method needs the pretightening force of fine adjustment ball screw bearings at both ends, excessive, the too small damping that all can affect ball-screw transmission mechanism of pressure, thus affects the performance index of steering gear system.Even if by repeatedly regulating the bearing pre-fastening making ball screw two ends in normal temperature environment, make steering gear system reach usage requirement, but when working in low temperature environment, even steering gear system ball screw is compacted cannot rotate because the rates of thermal expansion difference between steering wheel housing and ball screw can cause steering gear system ball screw bearings at both ends pretightening force sharply to increase; When steering gear system works in hot environment, because same reason ball screw bearings at both ends pretightening force reduces rapidly, generation gap, steering gear system ball screw two ends, thus cause steering gear system performance index when high and low temperature environmental work to exceed standard.So, in the urgent need to a kind of be convenient to debug and the electric steering engine ball-screw transmission mechanism adapting to various working environments to ensure the performance index of steering gear system.
Model utility content
The purpose of this utility model is a kind of electric steering engine ball-screw transmission mechanism loading flexible damping designed because ball-screw transmission mechanism damping change causes the technical barrier of performance index instability under various temperature state to solve ball screw slowdown type Electrodynamic Rudder System.
The purpose of this utility model is achieved through the following technical solutions:
A kind of electric steering engine ball-screw transmission mechanism loading flexible damping of the present utility model, is characterized in that: it comprises: controlling device (2), elastic element (3), angular contact ball bearing (4) and ball screw (5).
First 1 angular contact ball bearing (4) is loaded onto at ball screw (5) two ends respectively, angular contact ball bearing (4) adopts back-to-back mode to install; Then angular contact ball bearing (4) outer ring of ball screw (5) one end is held out against on steering wheel housing (6), elastic element (3) is withstood on ball screw (5) the other end angular contact ball bearing (4) outer ring; Controlling device (2) is connected with steering wheel housing (6) and compresses elastic element (3).
Utilize controlling device (2) to adjust the pressure of elastic element (3), thus compress the outer ring of angular contact ball bearing (4), make angular contact ball bearing (4) have certain pretightening force; Reached the object of the flexible pretension making ball screw (5) by the pretightening force of angular contact ball bearing (4), eliminate the gap at ball screw (5) two ends, stable drive, accurately, thus ensure the performance index of steering gear system.
Can also also install elastic element (3) additional holding out against angular contact ball bearing (4) outer ring on steering wheel housing (6), and the other end of elastic element (3) is held out against on steering wheel housing (6).
Described controlling device (2) is adjustment sheet.
Described elastic element (3) is belleville spring.
Beneficial effect
A kind of electric steering engine ball-screw transmission mechanism loading flexible damping that the utility model proposes, avoid the drawback of conventional method ball screw bearings at both ends pretightening force with jump in temperature, by the mode of Compliant pressure, leading screw bearings at both ends pretightening force changes mitigation under high and low temperature environment, can not produce bearing pre-fastening excessive, too small and cause the situation that steering gear system performance index exceed standard.
Accompanying drawing explanation
Fig. 1 is the electric steering engine ball-screw transmission mechanism structural representation loading flexible damping in the utility model embodiment;
Wherein, 1-screw, 2-controlling device, 3-elastic element, 4-angular contact ball bearing, 5-ball screw, 6-steering wheel housing, 7-motor.
Embodiment
Below in conjunction with accompanying drawing, following detailed description is done to the utility model.
The electric steering engine ball-screw transmission mechanism of the flexible damping of the loading in the present embodiment, comprising: screw 1, controlling device 2, elastic element 3, angular contact ball bearing 4 and ball screw 5.
First 1 angular contact ball bearing 4 is loaded onto at ball screw 5 two ends respectively, angular contact ball bearing 4 adopts back-to-back mode to install; Then respectively install angular contact ball bearing 4 outer ring at ball screw 5 two ends additional 1 elastic element 3, and make the other end of elastic element 3 hold out against on steering wheel housing 6; Controlling device 2 to be connected with steering wheel housing 6 by screw 1 and to compress the elastic element 3 away from motor 7.
In the present embodiment, controlling device 2 is adjustment sheet; Elastic element 3 is belleville spring.
This device under normal temperature environment, through overregulating the ball screw framework damping obtaining applicable steering gear system; When steering gear system is in high and low temperature environment, the parts such as steering wheel housing, ball screw and angular contact ball bearing certainly lead to axial dimension change because size is different with material.Because belleville spring exists, now belleville spring relies on resiliently deformable, alleviates the sharply change of the preload pressure of ball screw bearings at both ends.Doing so avoids the drawback of conventional method firm leading screw bearings at both ends pretightening force with jump in temperature.By the mode of this Compliant pressure, leading screw bearings at both ends pretightening force changes mitigation under high and low temperature environment, can not produce bearing pre-fastening excessive, too small and cause the situation that steering gear system performance index exceed standard.
Claims (4)
1. load an electric steering engine ball-screw transmission mechanism for flexible damping, it is characterized in that: it comprises: controlling device (2), elastic element (3), angular contact ball bearing (4) and ball screw (5);
First 1 angular contact ball bearing (4) is loaded onto at ball screw (5) two ends respectively, angular contact ball bearing (4) adopts back-to-back mode to install; Then angular contact ball bearing (4) outer ring of ball screw (5) one end is held out against on steering wheel housing (6), elastic element (3) is withstood on ball screw (5) the other end angular contact ball bearing (4) outer ring; Controlling device (2) is connected with steering wheel housing (6) and compresses elastic element (3);
Utilize controlling device (2) to adjust the pressure of elastic element (3), thus compress the outer ring of angular contact ball bearing (4), make angular contact ball bearing (4) have certain pretightening force; Reached the object of the flexible pretension making ball screw (5) by the pretightening force of angular contact ball bearing (4), eliminate the gap at ball screw (5) two ends, stable drive, accurately, thus ensure the performance index of steering gear system.
2. a kind of electric steering engine ball-screw transmission mechanism loading flexible damping as claimed in claim 1, it is characterized in that: can also also install elastic element (3) additional holding out against angular contact ball bearing (4) outer ring on steering wheel housing (6), and the other end of elastic element (3) is held out against on steering wheel housing (6).
3. a kind of electric steering engine ball-screw transmission mechanism loading flexible damping as claimed in claim 1 or 2, is characterized in that: described controlling device (2) is adjustment sheet.
4. a kind of electric steering engine ball-screw transmission mechanism loading flexible damping as claimed in claim 1 or 2, is characterized in that: described elastic element (3) is belleville spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520211559.9U CN204533415U (en) | 2015-04-09 | 2015-04-09 | A kind of electric steering engine ball-screw transmission mechanism loading flexible damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520211559.9U CN204533415U (en) | 2015-04-09 | 2015-04-09 | A kind of electric steering engine ball-screw transmission mechanism loading flexible damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533415U true CN204533415U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520211559.9U Active CN204533415U (en) | 2015-04-09 | 2015-04-09 | A kind of electric steering engine ball-screw transmission mechanism loading flexible damping |
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| CN (1) | CN204533415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838181A (en) * | 2015-12-07 | 2017-06-13 | 上海新跃仪表厂 | A kind of high rigidity transmission mechanism |
-
2015
- 2015-04-09 CN CN201520211559.9U patent/CN204533415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838181A (en) * | 2015-12-07 | 2017-06-13 | 上海新跃仪表厂 | A kind of high rigidity transmission mechanism |
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