CN201100390Y - Acentric self-lock transmission device - Google Patents
Acentric self-lock transmission device Download PDFInfo
- Publication number
- CN201100390Y CN201100390Y CNU2007200088925U CN200720008892U CN201100390Y CN 201100390 Y CN201100390 Y CN 201100390Y CN U2007200088925 U CNU2007200088925 U CN U2007200088925U CN 200720008892 U CN200720008892 U CN 200720008892U CN 201100390 Y CN201100390 Y CN 201100390Y
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- China
- Prior art keywords
- centrifugal
- pedestal
- key
- shaft
- guide shaft
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- Expired - Fee Related
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model relates to a centrifugal automatic locking transmission device, comprising a pedestal which can be shaft joint with a power take-off shaft, wherein the pedestal has a guiding shaft and a plurality of key shafts which are homogeneously distributed on a circle that is homocentric with the guiding shaft; each key shaft is positioned with a centrifugal block; a restoring spring is connected between the centrifugal blocks; an output transmission wheel is sleeved outside the centrifugal block and positioned on the guiding shaft through a bearing; and the centrifugal block is opened with inclined key grooves and positioned on the key shafts of the pedestal through the inclined key grooves. The inclined key groove causes the centrifugal moving surplus of the centrifugal block to be large and move towards as a whole relative to the key shaft under the action of the centrifugal force. Moreover, the forced point of the key shaft can move along with the speed, thereby the friction part of the centrifugal block can be suitable for the inner arc surface of the transmission wheel and achieving the contact of the largest area. The centrifugal automatic locking transmission device has the characteristics that the structure is simple and not easy to skid, and the automatic locking effect is good. The centrifugal block can be contacted with the transmission wheel with the largest area, thereby reducing the local abrasion phenomenon and prolonging the utilizing life.
Description
Technical field:
The utility model belongs to mechanical transmission fields, and particularly a kind of pto can drive the centrifugal automatic step-by-step of load when high speed rotating.
Background technique:
Power is to be difficult to start when loading load, generally unloads by clutch and unloads, treat dynamic start after, hang up load again, perhaps can unload by clutch and unload at operation gap, make power operate in idling mode, with energy efficient.Transmission of power clutch commonly used has two classes, and a class is a manual clutch, and structure is comparatively complicated, and function is more, can realize the clutch operation under the rotating speed arbitrarily; Another kind of is automatic clutch, and it is simple in structure, and power output is when the commentaries on classics degree of setting is above, and the centrifugal friction sheet can drive load automatically, reaches the purpose of transferring power.As Chinese patent 95209100.3, disclosed is a kind of apocarpy belt wheel, just belong to automatic clutch, its structure include drive plate, bearing pin be positioned on the drive plate centrifugal shoes, by bolton at the transmission shaft on the drive plate, be set in outside the centrifugal shoes by the belt pulley of bearing fixing on transmission shaft.This is simple in structure, and when the power output speed reaches setting value when above, centrifugal shoes opens conflict and form friction driving on the belt pulley inwall.Its deficiency is that centrifugal shoes axle is positioned on the drive plate, and it can only produce centrifugal swing at fast state, and each centrifugal shoes is only local inconsistent with belt pulley, the rubbing surface deficiency, and easily generation is skidded and is worn and torn; It two is ends of the fixing centrifugal shoes of Returnning spring, is subjected to force unbalance, can not reset rapidly.
Summary of the invention:
The purpose of this utility model is that a kind of centrifugal of design adopts skewed slot to be positioned on the pedestal, can whole centrifugal displacement to increase the self-locking device of rubbing surface; Its secondary objective is the tie point that changes centrifugal Returnning spring, and it is rapider to reset.
Technical solutions of the utility model are achieved in that a kind of centrifugal automatic step-by-step, comprise one can have a guide shaft with pedestal, the pedestal that pto is coupling and be distributed on the concentric circumference of guide shaft on a plurality of key axles, be positioned with one centrifugal on each key axle, centrifugal interblock is connected with Returnning spring, one output drive wheel is set in outside centrifugal, and be positioned on the guide shaft by bearing, offer the taper key groove on wherein centrifugal, be positioned on the strong axle of pedestal by the taper key groove.The taper key groove makes centrifugal centrifugal mobile surplus big, under action of centrifugal force, move outside whole relatively key is axial, and the force bearing point of key axle can the drift along with speed, make and the centrifugal interior table cambered surface of friction portion self adaption drive wheel reach the contact of maximum area.
Described taper key groove is positioned at centrifugal middle part, makes centrifugal whole stress balance.
Described pedestal, guide shaft and key axle are that the disjunctor casting forms; And key axle and pedestal, guide shaft disjunctor have stiffening rib.Increase integral rigidity intensity.
The axial middle part of described each centrifugal internal surface both sides is fixed with an attachment post respectively, and Returnning spring is connected between the adjacent centrifugal adjacent attachment post.The point of resultant force of two spring forces is tending towards centrifugal center of gravity position just, in case speed reduces, it can reset rapidly.
The utlity model has simple for structure, layout more rationally, be difficult for skidding, the self-locking good effectiveness, centrifugal energy maximum area contact with drive wheel, minimizing concentrated wear and skidding, centrifugal stress equalization, it is rapid to reset; Pedestal and guide shaft, the casting of key axle disjunctor improve whole rigidity intensity, can guarantee that guide shaft and key axle have good axis parallel degree, and effectively reduce amount of finish.
Description of drawings:
Below in conjunction with concrete legend the utility model is described further:
The centrifugal automatic step-by-step three-dimensional exploded view of Fig. 1
The centrifugal automatic step-by-step stereogram of Fig. 2
Centrifugal of Fig. 3 and pedestal graph of a relation
The centrifugal automatic step-by-step sectional drawing of Fig. 4
The taper key groove schematic representation that Fig. 5 is centrifugal
Wherein
1-pedestal 11-guide shaft 12-key axle
Centrifugal 21-taper key of 13-stiffening rib 2-groove
22-attachment post 3-friction plate 4-drive wheel
5-Returnning spring 6-bearing 7-bolt
8-catch α-angle
Embodiment:
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, centrifugal automatic step-by-step, comprise one can have a guide shaft 11 with pedestal 1, the pedestal 1 that pto is coupling and be distributed on the concentric circumference of guide shaft 11 on a plurality of key axles 12, the quantity of key axle 12 is decided on the drive wheel diameter, and this example is an example with three.Pedestal 1, guide shaft 11 and key axle 12 form for the disjunctor casting, and key axle 12 has stiffening rib 13 with pedestal 1, guide shaft 11 disjunctors, raising three's rigidity intensity, generation fracture when avoiding loading.Be positioned with one centrifugal 2 on each key axle 12, centrifugal 2 circular arc external surface is fixed with friction plate 3, increases the friction factor of 4 of drive wheels, is difficult for skidding.Output drive wheel 4 is set in outside centrifugal 2, and is positioned on the guide shaft 11 by bearing 6.Guide shaft 11 ends are integral drive wheel 4 and pedestal 1 kinematic positioning by bolt 7, catch 8.
As Fig. 3, offer taper key groove 21 on centrifugal 2, be positioned on the strong axle 12 of pedestal by taper key groove 21, taper key groove 21 is positioned at centrifugal 2 middle part, the stressed balance that more becomes.Described taper key groove 21 is an opening slot, is not influencing under the utilization efficiency easier processing.As figure, taper key groove 21 is a straight trough, spend greater than 10 along the skewed slot limit of centrifugal sense of rotation and the tangent line angle α of skewed slot starting point, make centrifugal 2 at key axle 12 and 4 formation of drive wheel, one class wedge-shaped structure, in case high speed rotating makes centrifugal to open and touch drive wheel 4 internal surfaces, centrifugal 2 and so on wedge-shaped structure be immediately between cut-in key axle 12 and the drive wheel 4, and form reliable self-locking, satisfies high load and drive requirement.And key axle 12 is associated with stiffening rib 13, rigidity intensity height, be difficult for stressed moment by impact fracture.Taper key groove 21 also can adopt eccentric curve bath structure as shown in Figure 5, can reach desirable self-locking effect equally.
Fig. 3 and Fig. 4 for another example, the axial middle part of each centrifugal 2 internal surface both sides is fixed with an attachment post 22 respectively, Returnning spring 5 is connected between the adjacent centrifugal 2 adjacent attachment post 22, makes the effect of the spring point of making a concerted effort be in centrifugal 2 center of gravity position, easier resetting.
Above-mentioned only is one of the utility model preferred embodiment, can not limit the scope of the utility model enforcement with this, key axle and guide shaft also can adopt the mode of bolt and pedestal to fix, the taper key groove also can adopt closed slotted eye, these all belong to the scheme that is equal to, and also should belong to the patent covering scope of the utility model.
Claims (9)
1, a kind of centrifugal automatic step-by-step, comprise one can have a guide shaft with pedestal, the pedestal that pto is coupling and be distributed on the concentric circumference of guide shaft on a plurality of key axles, be positioned with one centrifugal on each key axle, centrifugal interblock is connected with Returnning spring, one output drive wheel is set in outside centrifugal, and be positioned on the guide shaft by bearing, it is characterized in that offering on centrifugal the taper key groove, be positioned on the strong axle of pedestal by the taper key groove.
2, centrifugal automatic step-by-step according to claim 1 is characterized in that the taper key groove is positioned at centrifugal middle part.
3, centrifugal automatic step-by-step according to claim 2 is characterized in that the taper key groove is an opening slot.
4, according to claim 1,2 or 3 described centrifugal automatic step-by-steps, it is characterized in that the taper key groove is a straight trough, spend greater than 10 along the skewed slot limit of centrifugal sense of rotation and the tangent line angle of skewed slot starting point.
5,, it is characterized in that the taper key groove is eccentric curve bath according to claim 1,2 or 3 described centrifugal automatic step-by-steps.
6, centrifugal automatic step-by-step according to claim 1 is characterized in that pedestal, guide shaft and key axle are that the disjunctor casting forms.
7, centrifugal automatic step-by-step according to claim 6 is characterized in that key axle and pedestal, guide shaft disjunctor have stiffening rib.
8, centrifugal automatic step-by-step according to claim 1 is characterized in that the axial middle part of each centrifugal internal surface both sides is fixed with an attachment post respectively, and Returnning spring is connected between the adjacent centrifugal adjacent attachment post.
9, centrifugal automatic step-by-step according to claim 1 is characterized in that centrifugal circular arc external surface is fixed with friction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200088925U CN201100390Y (en) | 2007-11-28 | 2007-11-28 | Acentric self-lock transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200088925U CN201100390Y (en) | 2007-11-28 | 2007-11-28 | Acentric self-lock transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100390Y true CN201100390Y (en) | 2008-08-13 |
Family
ID=39936926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200088925U Expired - Fee Related CN201100390Y (en) | 2007-11-28 | 2007-11-28 | Acentric self-lock transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100390Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240423A (en) * | 2015-10-16 | 2016-01-13 | 上海稳健压缩机有限公司 | Coupling and air compressor |
| CN108588629A (en) * | 2018-04-17 | 2018-09-28 | 深圳市玖品空气净化科技有限公司 | A kind of new material production equipment that the security performance that processing effect is good is high |
| CN109737697A (en) * | 2018-12-17 | 2019-05-10 | 永康市创洁商贸有限公司 | A kind of Portable spin-dryer |
| CN111682453A (en) * | 2020-07-01 | 2020-09-18 | 蓝添财 | Efficient auxiliary operation's electric wire netting wiring equipment |
-
2007
- 2007-11-28 CN CNU2007200088925U patent/CN201100390Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240423A (en) * | 2015-10-16 | 2016-01-13 | 上海稳健压缩机有限公司 | Coupling and air compressor |
| CN108588629A (en) * | 2018-04-17 | 2018-09-28 | 深圳市玖品空气净化科技有限公司 | A kind of new material production equipment that the security performance that processing effect is good is high |
| CN109737697A (en) * | 2018-12-17 | 2019-05-10 | 永康市创洁商贸有限公司 | A kind of Portable spin-dryer |
| CN111682453A (en) * | 2020-07-01 | 2020-09-18 | 蓝添财 | Efficient auxiliary operation's electric wire netting wiring equipment |
| CN111682453B (en) * | 2020-07-01 | 2022-11-29 | 国网北京市电力公司 | Efficient auxiliary operation's electric wire netting wiring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080813 Termination date: 20101128 |