CN204677690U - A kind of worm gear structure that automatically can adjust radial clearance - Google Patents
A kind of worm gear structure that automatically can adjust radial clearance Download PDFInfo
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- CN204677690U CN204677690U CN201520277345.1U CN201520277345U CN204677690U CN 204677690 U CN204677690 U CN 204677690U CN 201520277345 U CN201520277345 U CN 201520277345U CN 204677690 U CN204677690 U CN 204677690U
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- worm
- driving mechanism
- bearing
- worm gear
- clutch shaft
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Abstract
The utility model discloses a kind of worm gear structure that automatically can adjust radial clearance, comprise: housing, worm gear, worm screw, inductor and driving mechanism, one end of worm screw is set with clutch shaft bearing, be set with floating installation outside clutch shaft bearing, clutch shaft bearing is arranged in floating installation and also can moves radially in floating installation; Floating installation is fixed on housing; The other end of worm screw is set with the second bearing, and the second bearing is flexibly connected with housing; Driving mechanism is connected with clutch shaft bearing; Inductor to be fixedly mounted on worm-wheel shaft and to be positioned at the shaft core position of worm-wheel shaft, and inductor is for monitoring radial distance between worm-wheel shaft and worm shaft, and inductor is connected with driving mechanism and provides actuating signal for the action of driving mechanism.The utility model is cooperatively interacted by inductor and driving mechanism, carries out Real-Time Monitoring and adjust in real time according to monitoring result the radial distance between worm gear, worm screw; Thus the gap between worm gear, worm screw is in the scope in useful gap all the time.
Description
Technical field
The utility model relates to Worm Wheel System technical field, particularly relates to a kind of worm gear structure that automatically can adjust radial clearance.
Background technique
In the electric boosting steering system of automobile, the reducing gear in electric power-assisted steering tubular column adopts Worm Wheel System, and worm screw is driven by assist motor, drives worm gear wheel thus realizes power-assisted steering.
Worm and gear in traditional electric power-assisted steering tubular column adopts the engagement having gap, and worm gear and worm screw are all fixedly mounted in housing by bearing, and the centre distance of worm and gear is constant, and the back lash of worm and gear is non-adjustable.Although the worm gear material of turbine and worm decelerator often adopts have selflubricating and the advantage material such as wear-resisting, but because the relative sliding velocity of Worm Wheel System meshing wheel between cog is larger, make frictional loss larger, and easily there is heating and the high phenomenon that heated up, so turbine and worm decelerator can along with using and the change of environment in the external world, its back lash can change.If the back lash of worm and gear is too small, cause the moment of torsion that turns to excessive, easily occur rotating irregularity, even stuck situation occurs; If worm gear worm backlash is excessive, then the transmission of worm and gear is not steady, produces shock and causes abnormal sound, affect the stationarity of Worm Wheel System and the travelling comfort of driving.
Model utility content
Based on the technical problem that above-mentioned background technology exists, the utility model proposes a kind of worm gear structure that automatically can adjust radial clearance, can adjust in real time according to the gap change of worm gear, worm screw, to guarantee that the gap between worm gear, worm screw is in the scope in useful gap all the time.
The utility model proposes a kind of worm gear structure that automatically can adjust radial clearance, comprising: housing, worm gear, worm screw, inductor and driving mechanism, wherein,
One end of worm screw is set with clutch shaft bearing, is set with floating installation outside clutch shaft bearing, and clutch shaft bearing is arranged in floating installation and also can moves radially in floating installation; Floating installation is fixed on housing;
The other end of worm screw is set with the second bearing, and the second bearing is flexibly connected with housing; In clutch shaft bearing active procedure, worm screw with the second bearing for fulcrum can radially wobble; Worm gear to be fixedly mounted on worm-wheel shaft and worm gear and worm meshing;
Driving mechanism is connected with clutch shaft bearing, and driving mechanism drives clutch shaft bearing to move radially in floating installation, and clutch shaft bearing drives one end of worm screw to move radially in moving process;
Inductor to be fixedly mounted on worm-wheel shaft and to be positioned at the shaft core position of worm-wheel shaft, and inductor is for monitoring radial distance between worm-wheel shaft and worm shaft, and inductor is connected with driving mechanism and provides actuating signal for the action of driving mechanism.
Preferably, the second bearing is selfaligning bearing.
Preferably, floating installation comprises fixed muffle, and clutch shaft bearing can carry out radial displacement in fixed muffle; Fixed muffle is fixedly connected with housing.
Preferably, fixed muffle is provided with waist-shaped hole, and clutch shaft bearing coordinates with waist-shaped hole and can carry out radial displacement along the long axis direction of waist-shaped hole.
Preferably, the both sides of waist-shaped hole are respectively equipped with ball.
Preferably, be provided with support block in waist-shaped hole, support block is fixed in waist-shaped hole by spring, and support block is between driving mechanism and clutch shaft bearing, and support block is provided with the through hole passed for output power shaft in driving mechanism.
Preferably, driving mechanism is fixed on housing.
In the utility model, one end of worm screw is set with clutch shaft bearing, is set with floating installation outside clutch shaft bearing, and clutch shaft bearing is arranged in floating installation and also can moves radially in floating installation; Floating installation is fixed on housing; The other end of worm screw is set with the second bearing, and the second bearing is flexibly connected with housing; In clutch shaft bearing active procedure, worm screw with the second bearing for fulcrum can radially wobble; Worm gear to be fixedly mounted on worm-wheel shaft and worm gear and worm meshing; Driving mechanism is connected with clutch shaft bearing, and driving mechanism drives clutch shaft bearing to move radially in floating installation, and clutch shaft bearing drives one end of worm screw to move radially in moving process; Inductor to be fixedly mounted on worm-wheel shaft and to be positioned at the shaft core position of worm-wheel shaft, and inductor is for monitoring radial distance between worm-wheel shaft and worm shaft, and inductor is connected with driving mechanism and provides actuating signal for the action of driving mechanism; During work, when inductor monitor distance between worm screw distance worm-wheel shaft excessive time, can send near signal from trend driving mechanism, driving mechanism receives and start action after signal, drives worm screw to the direction displacement near worm gear; When inductor monitors the hypotelorism of worm screw distance worm gear, inductor can send away from signal to driving mechanism, and driving mechanism receives and starts action away from after signal, drives worm screw to the direction displacement away from worm gear.
In sum, the utility model is cooperatively interacted by inductor and driving mechanism, carries out Real-Time Monitoring and adjust in real time according to monitoring result the radial distance between worm gear, worm screw; Thus the gap between worm gear, worm screw is in the scope in useful gap all the time.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that automatically can adjust the worm gear structure of radial clearance that the utility model proposes;
Fig. 2 is a kind of structural representation that automatically can adjust fixed muffle in the worm gear structure of radial clearance that the utility model proposes.
Embodiment
Below, by specific embodiment, the technical solution of the utility model is described in detail.
As shown in Figure 1-2, Fig. 1 is a kind of structural representation that automatically can adjust the worm gear structure of radial clearance that the utility model proposes; Fig. 2 is a kind of structural representation that automatically can adjust fixed muffle in the worm gear structure of radial clearance that the utility model proposes.
With reference to Fig. 1-2, a kind of worm gear structure that automatically can adjust radial clearance that the utility model embodiment proposes, comprising: housing 1, worm gear 2, worm screw 3, inductor 4 and driving mechanism 5,
Wherein, one end of worm screw 3 is set with clutch shaft bearing 6, is set with floating installation outside clutch shaft bearing 6, and clutch shaft bearing 6 is arranged in floating installation and also can moves radially in floating installation; Floating installation is fixed on housing 1; Floating installation is fixed muffle 8, and fixed muffle 8 is provided with waist-shaped hole 81, and clutch shaft bearing 6 coordinates with waist-shaped hole 81 and can carry out radial displacement along the long axis direction of waist-shaped hole 81; Fixed muffle 8 is fixedly connected with housing 1.
The other end of worm screw 3 is set with the second bearing 7, second bearing 7 and is flexibly connected with housing 1; In clutch shaft bearing 6 active procedure, worm screw 3 with the second bearing 7 for fulcrum can radially wobble; Worm gear 2 is fixedly mounted on worm-wheel shaft 10 and worm gear 2 engages with worm screw 3.
Driving mechanism 5 is connected with clutch shaft bearing 6, and driving mechanism 5 drives clutch shaft bearing 6 to move radially in floating installation, and clutch shaft bearing 6 drives one end of worm screw 3 to move radially in moving process; Inductor 4 to be fixedly mounted on worm-wheel shaft 10 and to be positioned at the shaft core position of worm-wheel shaft 10, and inductor 4 is for monitoring radial distance between worm-wheel shaft 10 and worm screw 3 axle, and inductor 4 is connected with driving mechanism 5 and provides actuating signal for the action of driving mechanism 5.
In the present embodiment, in order to the second bearing 7 can be made better to coordinate with clutch shaft bearing 6, the second bearing 7 adopts selfaligning bearing; In order to make driving mechanism 5 and worm screw 3 reach good conformability, the driving mechanism 5 in the present embodiment is fixed on housing 1.
In addition, in order to driving can be made steadily laborsaving, also in order to make the support force alleviating driving mechanism 5, in the present embodiment, ball is respectively equipped with in the both sides of waist-shaped hole 81; In waist-shaped hole 81, be provided with support block 9, support block 9 is fixed in waist-shaped hole 81 by spring.
The utility model is work like this, when inductor 4 monitor worm screw 3 excessive apart from the distance between worm-wheel shaft 10 time, can send near signal from trend driving mechanism 5, driving mechanism 5 receives and start action after signal, drives worm screw 3 to the direction displacement near worm gear 2; When inductor 4 monitors the hypotelorism of worm screw 3 apart from worm gear 2, inductor 4 can send away from signal to driving mechanism 5, and driving mechanism 5 receives and starts action away from after signal, drives worm screw 3 to the direction displacement away from worm gear 2.
The utility model is cooperatively interacted by inductor 4 and driving mechanism 5, and the radial distance between worm gear 2, worm screw 3 is carried out to Real-Time Monitoring and adjusts in real time according to monitoring result; Thus the gap between worm gear 2, worm screw 3 is in the scope in useful gap all the time.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (7)
1. automatically can adjust a worm gear structure for radial clearance, it is characterized in that, comprising: housing (1), worm gear (2), worm screw (3), inductor (4) and driving mechanism (5), wherein,
One end of worm screw (3) is set with clutch shaft bearing (6), and clutch shaft bearing is set with floating installation outside (6), and clutch shaft bearing (6) is arranged in floating installation and also can moves radially in floating installation; Floating installation is fixed on housing (1);
The other end of worm screw (3) is set with the second bearing (7), and the second bearing (7) is flexibly connected with housing (1); In clutch shaft bearing (6) active procedure, worm screw (3) with the second bearing (7) for fulcrum can radially wobble; Worm gear (2) is fixedly mounted on the upper and worm gear (2) of worm-wheel shaft (10) and engages with worm screw (3);
Driving mechanism (5) is connected with clutch shaft bearing (6), driving mechanism (5) drives clutch shaft bearing (6) to move radially in floating installation, and clutch shaft bearing (6) drives one end of worm screw (3) to move radially in moving process;
Inductor (4) is fixedly mounted on worm-wheel shaft (10) and goes up and the shaft core position being positioned at worm-wheel shaft (10), inductor (4) is for monitoring radial distance between worm-wheel shaft (10) and worm screw (3) axle, and inductor (4) is connected with driving mechanism (5) and is that the action of driving mechanism (5) provides actuating signal.
2. the worm gear structure that automatically can adjust radial clearance according to claim 1, is characterized in that, the second bearing (7) is selfaligning bearing.
3. the worm gear structure that automatically can adjust radial clearance according to claim 1, it is characterized in that, floating installation comprises fixed muffle (8), and clutch shaft bearing (6) can carry out radial displacement in fixed muffle (8); Fixed muffle (8) is fixedly connected with housing (1).
4. the worm gear structure that automatically can adjust radial clearance according to claim 3, it is characterized in that, fixed muffle (8) is provided with waist-shaped hole (81), and clutch shaft bearing (6) coordinates with waist-shaped hole (81) and can carry out radial displacement along the long axis direction of waist-shaped hole (81).
5. the worm gear structure that automatically can adjust radial clearance according to claim 4, is characterized in that, the both sides of waist-shaped hole (81) are respectively equipped with ball.
6. the worm gear structure that automatically can adjust radial clearance according to claim 4, it is characterized in that, support block (9) is provided with in waist-shaped hole (81), support block (9) is fixed in waist-shaped hole (81) by spring, and support block (9) is positioned between driving mechanism (5) and clutch shaft bearing (6), support block (9) is provided with the through hole passed for output power shaft in driving mechanism (5).
7. the worm gear structure that automatically can adjust radial clearance according to claim 1, is characterized in that, driving mechanism (5) is fixed on housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277345.1U CN204677690U (en) | 2015-04-30 | 2015-04-30 | A kind of worm gear structure that automatically can adjust radial clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277345.1U CN204677690U (en) | 2015-04-30 | 2015-04-30 | A kind of worm gear structure that automatically can adjust radial clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204677690U true CN204677690U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520277345.1U Expired - Fee Related CN204677690U (en) | 2015-04-30 | 2015-04-30 | A kind of worm gear structure that automatically can adjust radial clearance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565950A (en) * | 2021-08-09 | 2021-10-29 | 无锡京华重工装备制造有限公司 | Anti-backlash structure with meshing clearance measuring function for C shaft of vertical lathe |
-
2015
- 2015-04-30 CN CN201520277345.1U patent/CN204677690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565950A (en) * | 2021-08-09 | 2021-10-29 | 无锡京华重工装备制造有限公司 | Anti-backlash structure with meshing clearance measuring function for C shaft of vertical lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20160430 |