CN2570540Y - Ball worm gearing - Google Patents
Ball worm gearing Download PDFInfo
- Publication number
- CN2570540Y CN2570540Y CN 02275227 CN02275227U CN2570540Y CN 2570540 Y CN2570540 Y CN 2570540Y CN 02275227 CN02275227 CN 02275227 CN 02275227 U CN02275227 U CN 02275227U CN 2570540 Y CN2570540 Y CN 2570540Y
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- CN
- China
- Prior art keywords
- ball
- worm
- gear
- gland
- worm wheel
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a drive mechanism which is composed of ball bearings, a worm wheel and an endless screw. The utility model is composed of ball bearings, a worm wheel, an endless screw, a gear box and a pressure cover thereof, a drive shaft and a pressure cover thereof, a ball bearing assembly cover, etc., wherein, semicircular groove-shaped ball bearing tracks are arranged on the inside surface and the outside surface of the worm wheel and the surface of the endless screw; the ball bearings are ranged in ball bearing abrasive frames on the surface of the worm wheel; the inner side of the drive shaft pressure cover and the convex circular arc of the ball bearing assembly cover are formed into a ball bearing passageway; two halves of drive shaft pressure cover are fixed tightly at both sides of the worm wheel through a detent threaded bolt. Sliding plane contact during the drive of the worm wheel and the endless screw is changed into rolling point contact through the drive mechanism, friction loss is reduced, driving efficiency is enhanced from about 64 percent to 97 percent, life time is increased by 4 times, and speed ratio is increased markedly. The utility model can be used as a drive mechanism for various vehicles, tanks, armored cars, ships, spacecraft, etc., and the utility model can be also used as speed changers for being widely used in speed changer devices in the fields of metallurgy, chemical industry, textile industry and machinery.
Description
Technical field
The utility model belongs to mechanical transmission fields, particularly a kind of ball worm gearing unit.
Background technique
Conventional worm gearing comes transmitted power by the sliding friction by worm gear and worm screw, and its transmission efficiency is low, and power loss is big.People succeeded in developing the ball worn transmission device afterwards, and for example application for a patent for invention 87102733 discloses a kind of Worm-and-ball transmission device with movable teeth, were made up of oscillating tooth worm screw, worm screw, ball, spherical guide and ball loop, can the transmission of consolidation speed.Still there are some problems in this device in actual motion, and first, because worm screw rotating speed height, make the ball that is contained in the worm screw produce centrifugal force, thereby increased the resistance of ball-recirculation motion.The second, the race way diameter of ball inside and outside worm screw is unequal, and linear velocity does not just wait yet, and the ball operation is not smooth.Three, worm screw is less relatively, and it is bigger to process the worm screw difficulty that this Worm-and-ball transmission device uses, and is difficult for producing in batches.
Summary of the invention
The purpose of this utility model provides the ball worm gearing unit that a kind of ball, worm gear, worm screw and ball orbit are formed.Semicircle flute profile ball orbit all is being set on the outer surface of worm screw and on the worm gear inner and outer surface, ball is arranged in is being contained in the lip-deep ball sand of the worm gear frame and remaining ball orbit is formed the transmission combination of ball worm and gear together.
According to ball worm gearing unit of the present utility model, with gear-box and gear case gland the transmission combination of described ball worm and gear is sealed, with one group of bolt gear case gland and gear-box are coupled together.
According to ball worm gearing unit of the present utility model, can in worm gear, assemble different transmission shafts according to concrete purposes, for example: when being used for vehicle rear axle, the vehicle rear axle shell of the wooden fork speed device be made up of cross axle, four bevel pinions and four internal spline large bevel gears can be packed in the worm gear, form described all the other ball orbits by wooden fork speed device gland.Be rotatably connected with bearing between described gear case gland and the described wooden fork speed device gland.The cylindrical portion of this wooden fork speed device gland is provided with semicircular half slot ball orbit, with the both sides of shank bolton at worm gear.
According to ball worm gearing unit of the present utility model, establish a dome arc ball installation cover in the bottom of described gear-box, the outer surface concave circular arc of its dome arc part and worm gear partly is complementary.During this ball worm gearing unit, this ball installation cover can be taken off in assembling, and ball is packed in the sand frame of ball, after having adorned ball, covers this ball installation cover again.
If ball worm gearing unit of the present utility model is used as speed increaser or retarder, then corresponding transmission shaft is inserted in the worm gear, the excircle part of the gland of this transmission shaft is provided with semicircular half slot ball orbit, with the shank bolt it is fastened on the both sides of worm gear.
This transmission device has a series of advantage:
(1) being slidingly matched of original worm and gear transmission changed into the cooperation of rolling, thereby significantly improved transmission efficiency.
(2) the face contact with original worm and gear transmission changes over worm screw-ball-worm gear point contact, thereby reduced frictional force significantly, result of calculation shows, transmission efficiency is brought up to of the present utility model 97% from original 64%, and be five times of worm gearing working life.
Ball worm gearing unit of the present utility model can be widely used in space flight, waterborne and land transport facility and various vehicle, also can be widely used in the gear arrangement of metallurgy, chemical industry, weaving, mechanical field.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model a forward sectional view.
Fig. 2 is the side partial sectional view of Fig. 1.
Fig. 3 is a worm structure schematic representation of the present utility model.
Fig. 4 is the fragmentary sectional elevation view of worm gear of the present utility model.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is a left side wooden fork speed device gland structure schematic representation.
Fig. 7 is the schematic representation that has the gear-box of ball installation cover.
Fig. 8 is the structural representation of vehicle rear-axle housing 1.
Fig. 9 is another embodiment of the present utility model: be used as the structural representation of speed changer, both can make retarder, also can make speed increaser and use.
Figure 10 is a sand shelf structure schematic representation.
Embodiment
As shown in Figure 1, 2, ball worm gearing unit of the present utility model mainly is made up of worm screw 8, ball 6, worm gear 15 and ball orbit, on the outer surface of worm screw 8 and on the inner and outer surface of worm gear 15 semicircular half slot ball orbit is being set all, be arranged in ball 6 in the worm gear 15 lip-deep ball sand framves 13 and all the other ball orbits are formed the transmission combination of ball worm and gear together.
As shown in Figure 1, ball worm gearing unit of the present utility model is sealed the transmission combination of described ball worm and gear with gear-box 7 and gear case gland 3, with one group of bolt 4 gear case gland 3 and gear-box 7 is coupled together.
As shown in Figure 1, an example as mode of execution of the present utility model, the vehicle rear axle shell 1 that the wooden fork speed device of being made up of cross axle 9, four bevel pinions 10 and four internal spline large bevel gears 11 is housed can be packed in the worm gear 15, form described all the other ball orbits by wooden fork speed device gland 5.Be rotatably connected with bearing 4 between described gear case gland 3 and the described wooden fork speed device gland 5.
As shown in Figure 1, the cylindrical portion of wooden fork speed device gland 5 is provided with semicircular half slot ball orbit, is fastened on the both sides of worm gear 15 with shank bolt 12.
As shown in Figure 1, establish a dome arc ball installation cover 16 in the bottom of described gear-box 7, the outer surface concave circular arc of its dome arc part and worm gear 15 partly is complementary.
Fig. 9 shows another embodiment of the present utility model, and a common transmission shaft 9 ' is inserted in the worm gear 15, and the excircle part of the gland 5 ' of this transmission shaft 9 ' is semicircular half slot ball orbit, with shank bolt 12 it is fastened on the both sides of worm gear 15.22 is key among the figure, and 23 is base.Whole ball orbit direction of travel is along with the guiding of the lead angle of worm gear and worm screw is determined, whole ball orbit is the cyclic track of sealing; With pin key 22 transmission shaft 9 ' and gland 5 ' are coupled together, as shown in Figure 9.
As shown in Figure 3, according to the utility model, on worm screw 8 surfaces, process semicircle flute profile ball orbit 81.
Shown in Fig. 4,5, according to the semicircle flute profile ball orbit 151 that the internal surface of worm gear 15 of the present utility model is established, outer surface is provided with semicircle flute profile ball orbit 152.
As shown in Figure 6, wooden fork speed device gland 5 is provided with outside semicircle 51, wherein is provided with the half slot ball orbit, and the centre is provided with one group of shank bolt 12 two halves wooden fork speed device gland is fastened on the worm gear both sides.This embodiment can be widely used in various vehicles, tank, armored vehicle, boats and ships, astrovehicle etc.
As shown in Figure 7, be provided with ball installation cover 16 in the middle of the bottom of gear-box 7, this ball joined cover 16 when taking off, go up or load onto ball, maintain to carry out ball with regard to desirable.
Embodiment shown in Figure 9 becomes a kind of speed change gear, both can be used as speed increaser, also can be used as subtractor.Can be widely used in the gear arrangement of metallurgy, chemical industry, weaving, mechanical field.
Utilize the sand frame of Figure 10, can avoid ball autogenous grinding and collision, be provided with tank filler sleeve and air outlet hole 131 in the sand frame, be convenient to lubricated and exhaust, thereby increased the working life of ball, guarantee the transmission device safe operation.
Claims (7)
1. ball worm gearing unit, it is characterized in that: semicircle flute profile ball orbit groove all is being set on the outer surface of worm screw (8) and on the inner and outer surface of worm gear (15), ball (6) is arranged in worm gear (15) the lip-deep ball sand frame (13) and all the other ball orbits are formed the transmission combination of ball worm and gear together.
2. ball worm gearing unit according to claim 1, it is characterized in that: with gear-box (7) and gear case gland (3) transmission combination of described ball worm and gear is sealed, gear case gland (3) and gear-box (7) are coupled together with one group of bolt (4).
3. ball worm gearing unit according to claim 1, the vehicle rear axle shell (1) that it is characterized in that being equipped with the wooden fork speed device of being made up of cross axle (9), four bevel pinions (10) and four internal spline large bevel gears (11) is packed in the worm gear (15), forms described all the other ball orbits by wooden fork speed device gland (5).
4. according to claim 2 or 3 described ball worm gearing units, it is characterized in that being rotatably connected with bearing (14) between described gear case gland (3) and the described wooden fork speed device gland (5).
5. ball worm gearing unit according to claim 3 is characterized in that the cylindrical portion of described wooden fork speed device gland (5) is provided with semicircular half slot ball orbit, is fastened on the both sides of worm gear (15) with shank bolt (12).
6. ball worm gearing unit according to claim 2 is characterized in that establishing a dome arc ball installation cover (16) in the bottom of described gear-box (7), and the outer surface concave circular arc of its dome arc part and worm gear (15) partly is complementary.
7. ball worm gearing unit according to claim 1, it is characterized in that a common transmission shaft (9 ') is inserted in the worm gear (15), the excircle part of the gland (5 ') of this transmission shaft (9 ') is provided with semicircular half slot ball orbit, with shank bolt (12) it is fastened on the both sides of worm gear (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275227 CN2570540Y (en) | 2002-09-13 | 2002-09-13 | Ball worm gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275227 CN2570540Y (en) | 2002-09-13 | 2002-09-13 | Ball worm gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570540Y true CN2570540Y (en) | 2003-09-03 |
Family
ID=33739328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275227 Expired - Fee Related CN2570540Y (en) | 2002-09-13 | 2002-09-13 | Ball worm gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570540Y (en) |
-
2002
- 2002-09-13 CN CN 02275227 patent/CN2570540Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Kong Jinman Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |