CN204553699U - Drive structure of gear worm and worm-gear speed reducer - Google Patents
Drive structure of gear worm and worm-gear speed reducer Download PDFInfo
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- CN204553699U CN204553699U CN201520159739.7U CN201520159739U CN204553699U CN 204553699 U CN204553699 U CN 204553699U CN 201520159739 U CN201520159739 U CN 201520159739U CN 204553699 U CN204553699 U CN 204553699U
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- worm
- ratch
- gear
- worm shaft
- shaft
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Abstract
A kind of drive structure of gear worm and worm-gear speed reducer, comprise worm gear and worm screw, wherein worm gear comprises fluted disc and the worm-wheel shaft of coaxial setting, worm screw comprises helical tooth and worm shaft, fluted disc and helical tooth engage each other, worm screw comprises the ratch of tubular, and helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously.Worm shaft thus can Long-Time Service owing to belonging to non-wear-out part, and can change at any time according to service condition as the ratch of wear-out part, can also realize the standardization and seriation of product on demand.Because ratch can be free to slide translation on worm shaft, thus can eliminate the not good state of fixed point engagement caused because of tooth profile error, in addition, what the utility model can be applied to that worm screw is in non-standard state installs and uses environment, has filled up industry blank.
Description
Technical field
The utility model relates to mechanically operated technical field, is a kind of low cost specifically and has more long life drive structure of gear worm and worm-gear speed reducer.
Background technique
Drive structure of gear worm is a kind of power transmission mechanism, is usually used in deceleration machine, the velocity transducer produced by utilizing gears meshing, the winding number of motor (motor) is decelerated to desired winding number, and obtains the mechanism of larger torque.
Current in the mechanism of transferring power and motion, the application area of speed reducer is quite extensive.And structural design with manufacture, normally the helical tooth of worm screw periphery and transmission shaft are all-in-one-pieces.Therefore, profile of tooth and the transmission shaft linked together must have more accurately coaxality requirement, meanwhile, have accurately coaxality requirement too to the support of worm shaft.In addition, for ensureing the fluted disc of worm gear and the accuracy of mesh of worm spiral tooth, require all very high to the tooth profile error of worm and gear, namely in assembly process, the precision of axial, the radial location dimension of worm screw all must meet strict requirement.Drive structure of gear worm of the prior art is after using some cycles, because profile of tooth wearing and tearing can cause between cog engagement not good, noise aggravate, transmission speed ratio also can change, can finally cause worm screw entirety to scrap in this case or overall transmission device discard.From another feature of Worm Wheel System, the axial force that tradition drive structure of gear worm worm screw in running is born is very large, therefore, for the worm screw of long-term unidirectional stand under load work, single-face tooth-shaped serious wear, and due to the inconvenient axial position adjustment of overall worm screw, the approach usually solving odontotripsis can only be more renew worm screw.In addition, worm gear worm drive structure of the prior art and the speed reducer that have employed this drive mechanism must ensure that worm screw is in level all the time in actual use, otherwise the transmission accuracy of mesh of worm and gear can be caused to decline, and cause transmission to occur bad.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of low cost and has drive structure of gear worm and the worm-gear speed reducer of more long life.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is:
Drive structure of gear worm of the present utility model, comprise worm gear and worm screw, wherein worm gear comprises fluted disc and the worm-wheel shaft of coaxial setting, worm screw comprises helical tooth and worm shaft, fluted disc and helical tooth engage each other, worm screw comprises the ratch of tubular, and helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously.The utility model can also adopt following technical measures:
Described mounting hole is through ratch axially, and mounting hole arranges guiding groove to external expansion, and worm shaft arranges guiding convex, above-mentioned guiding is convex corresponding with guiding groove, when worm shaft inserts mounting hole, leads and convexly to match with guiding groove.
The through ratch of described guiding groove.
Described guiding groove cross section is rectangle, and convex cross section of leading is corresponding rectangle.
The bi-side of described guiding convex edge worm shaft axis are arc surface.
The direction of insertion that described ratch is corresponding to worm shaft arranges counterbore, and counterbore is coaxial with mounting hole; The outward edge of counterbore arranges chamfering; The position of the corresponding counterbore of worm shaft is set to conical surface.
Worm-gear speed reducer of the present utility model, comprise: casing, bearing, worm gear and worm screw, casing forms the external structure of speed reducer, worm gear and worm screw are fixed by bearing and casing, and the helical tooth of the fluted disc of worm gear and worm screw is meshed, worm screw comprises the ratch of tubular, and helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously; The two ends of worm shaft combine fixing by bearing with cabinet.
The advantage that the utility model has and good effect are:
In drive structure of gear worm of the present utility model and worm-gear speed reducer, worm screw is two-part of ratch and worm shaft split, helical tooth is arranged on the periphery of ratch, ratch and the fixing synchronous rotary of worm shaft radial direction, and ratch can to slide axially translation along worm shaft simultaneously.Ratch and worm shaft can adopt different materials, and ratch adopts 40Cr steel, and worm shaft adopts 45 steel inexpensively, thus reduce the cost of material of worm screw.Worm shaft thus can Long-Time Service owing to belonging to non-wear-out part, and can change at any time according to service condition as the ratch of wear-out part, can also realize the standardization and seriation of product on demand.Because ratch can be free to slide translation on worm shaft, thus the not good state of fixed point engagement can eliminated because tooth profile error causes, when there are wearing and tearing in the single cog of helical tooth on worm screw, ratch can regulate the relative position on worm shaft automatically, to ensure the cooperation tightness of worm and worm wheel.In addition, because the ratch in worm screw can along worm shaft translation, even if worm screw is not in level in the application, ratch also can automatic position adjusting function, helical tooth and fluted disc is made to keep dynamic engagement, thus ensure that the validity of drive mechanism, what thus drive structure of gear worm of the present utility model and worm-gear speed reducer can be applied to that worm screw is in non-standard state installs and uses environment, has filled up industry blank.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of worm shaft in drive structure of gear worm of the present utility model;
Fig. 2 is the axial sectional view of ratch in drive structure of gear worm of the present utility model;
Fig. 3 is the schematic diagram that have employed the worm-gear speed reducer of drive structure of gear worm of the present utility model.
Embodiment
Referring to drawings and Examples, the utility model is described in detail.
Fig. 1 is the schematic diagram of worm shaft in drive structure of gear worm of the present utility model; Fig. 2 is the axial sectional view of ratch in drive structure of gear worm of the present utility model; Fig. 3 is the schematic diagram that have employed the worm-gear speed reducer of drive structure of gear worm of the present utility model.
As shown in Figure 1 to Figure 3, drive structure of gear worm of the present utility model, comprise worm gear 1 and worm screw 2, wherein worm gear comprises fluted disc 1a and the worm-wheel shaft 1b of coaxial setting, and worm-wheel shaft and fluted disc are coaxially arranged and synchronous rotary, worm screw comprises helical tooth 2a and worm shaft 2b, fluted disc and worm screw are vertical setting, and fluted disc and helical tooth engage each other, and worm screw comprises the ratch 2c of tubular, helical tooth 2a is arranged on the periphery of ratch 2c, and worm shaft 2b runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, ratch and worm shaft is made to keep synchronous rotary when moving, ratch is along the translation that slides axially of worm shaft simultaneously, ratch to coordinate in transmission process and can automatically adjust its position on worm shaft according to fluted disc and the situation that engages of helical tooth, thus the drive state that maintenance is closely engaged.
Mounting hole 3 is through ratch axially, and mounting hole arranges guiding groove 4 to external expansion, worm shaft arranges guiding convex 5, above-mentioned guiding is convex corresponding with guiding groove, when worm shaft inserts mounting hole, lead and convexly to match with guiding groove, thus the driving error ensureing ratch and worm shaft synchronous axial system and can not occur in radial direction.
The through ratch of guiding groove, thus be convenient to be inserted in ratch with the convex worm shaft of guiding, and it is interrupted to ensure that ratch slides axially along worm shaft.
Guiding groove cross section is rectangle, and convex cross section of leading is corresponding rectangle, make guiding groove and lead convex between volume coordinate and keep stable.Guiding groove can be replaced by different shapes with guiding is convex.
The bi-side of guiding convex edge worm shaft axis are arc surface, thus are convenient to the convex insertion guiding groove that leads, and reduce ratch along the resistance be subject to during worm shaft translation.
The direction of insertion that ratch is corresponding to worm shaft arranges counterbore 8, and counterbore is coaxial with mounting hole; The outward edge of counterbore arranges chamfering; The position of the corresponding counterbore of worm shaft is set to conical surface, and worm shaft and ratch are closely cooperated.
Worm and Worm Gear Driving structure of the present utility model can be used in speed reducer, thus it is more stable that the transmission in speed reducer is coordinated.
Worm-gear speed reducer of the present utility model, comprise: casing 6, bearing 7, worm gear and worm screw, casing forms the external structure of speed reducer, worm gear and worm screw are fixed by bearing and casing, and the helical tooth of the fluted disc of worm gear and worm screw is meshed, worm screw comprises the ratch of tubular, and helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously; The two ends of worm shaft combine fixing by bearing with cabinet.
In drive structure of gear worm of the present utility model and worm-gear speed reducer, worm screw is two-part of ratch and worm shaft split, helical tooth is arranged on the periphery of ratch, ratch and the fixing synchronous rotary of worm shaft radial direction, and ratch can to slide axially translation along worm shaft simultaneously.Ratch and worm shaft can adopt different materials, and ratch adopts 40Cr steel, and worm shaft adopts 45 steel inexpensively, thus reduce the cost of material of worm screw.Worm shaft thus can Long-Time Service owing to belonging to non-wear-out part, and can change at any time according to service condition as the ratch of wear-out part, can also realize the standardization and seriation of product on demand.Because ratch can be free to slide translation on worm shaft, thus the not good state of fixed point engagement can eliminated because tooth profile error causes, when there are wearing and tearing in the single cog of helical tooth on worm screw, ratch can regulate the relative position on worm shaft automatically, to ensure the cooperation tightness of worm and worm wheel.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (7)
1. a drive structure of gear worm, comprise worm gear and worm screw, wherein worm gear comprises fluted disc and the worm-wheel shaft of coaxial setting, worm screw comprises helical tooth and worm shaft, fluted disc and helical tooth engage each other, it is characterized in that: worm screw comprises the ratch of tubular, helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously.
2. drive structure of gear worm according to claim 1, it is characterized in that: mounting hole is through ratch axially, and mounting hole arranges guiding groove to external expansion, worm shaft arranges guiding convex, above-mentioned guiding is convex corresponding with guiding groove, when worm shaft inserts mounting hole, lead and convexly to match with guiding groove.
3. drive structure of gear worm according to claim 2, is characterized in that: the through ratch of guiding groove.
4. the drive structure of gear worm according to Claims 2 or 3, is characterized in that: guiding groove cross section is rectangle, and convex cross section of leading is corresponding rectangle.
5. drive structure of gear worm according to claim 4, is characterized in that: the bi-side of guiding convex edge worm shaft axis are arc surface.
6. drive structure of gear worm according to claim 5, is characterized in that: the direction of insertion that ratch is corresponding to worm shaft arranges counterbore, and counterbore is coaxial with mounting hole; The outward edge of counterbore arranges chamfering; The position of the corresponding counterbore of worm shaft is set to conical surface.
7. a worm-gear speed reducer, comprise: casing, bearing, worm gear and worm screw, casing forms the external structure of speed reducer, worm gear and worm screw are fixed by bearing and casing, and the helical tooth of the fluted disc of worm gear and worm screw is meshed, it is characterized in that: worm screw comprises the ratch of tubular, helical tooth is arranged on the periphery of ratch, and worm shaft runs through ratch and coaxially arranges with ratch; Between ratch and worm shaft, radial position is fixed, and ratch is along the translation that slides axially of worm shaft simultaneously; The two ends of worm shaft combine fixing by bearing with cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159739.7U CN204553699U (en) | 2015-03-20 | 2015-03-20 | Drive structure of gear worm and worm-gear speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159739.7U CN204553699U (en) | 2015-03-20 | 2015-03-20 | Drive structure of gear worm and worm-gear speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553699U true CN204553699U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159739.7U Expired - Fee Related CN204553699U (en) | 2015-03-20 | 2015-03-20 | Drive structure of gear worm and worm-gear speed reducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204553699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032839A (en) * | 2015-03-20 | 2016-10-19 | 王卓 | Worm and gear drive mechanism and worm and gear speed reducer |
| CN108533687A (en) * | 2018-06-15 | 2018-09-14 | 三门县金帆橡塑机械厂 | A kind of Worm and worm-wheel gearing and its mixer |
-
2015
- 2015-03-20 CN CN201520159739.7U patent/CN204553699U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032839A (en) * | 2015-03-20 | 2016-10-19 | 王卓 | Worm and gear drive mechanism and worm and gear speed reducer |
| CN108533687A (en) * | 2018-06-15 | 2018-09-14 | 三门县金帆橡塑机械厂 | A kind of Worm and worm-wheel gearing and its mixer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170424 Address after: 110000 Shenyang, northeast of the big east road, Liaoning, No. (No. 24) (No. 372) Patentee after: SHENYANG FUSHI EQUIPMENT DESIGN CO.,LTD. Address before: Wanliutang road in Shenhe District of Shenyang City, Liaoning Province, No. 20 1-4-1 110000 Patentee before: Wang Zhuo |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180829 Address after: 110043 Gate 7, Dongling Road, Shenhe District, Shenyang, Liaoning, 7 Patentee after: SHENYANG HAORUI MACHINERY EQUIPMENT MANUFACTURING CO.,LTD. Address before: No. 372 (24 gate), Northeast Road, Dadong District. Patentee before: SHENYANG FUSHI EQUIPMENT DESIGN CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |