CN103277426A - Overrun clutch - Google Patents
Overrun clutch Download PDFInfo
- Publication number
- CN103277426A CN103277426A CN2013102160284A CN201310216028A CN103277426A CN 103277426 A CN103277426 A CN 103277426A CN 2013102160284 A CN2013102160284 A CN 2013102160284A CN 201310216028 A CN201310216028 A CN 201310216028A CN 103277426 A CN103277426 A CN 103277426A
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- China
- Prior art keywords
- roller
- right baffle
- folded spring
- plate
- barrier portion
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Abstract
The invention overcomes the defects that early failure and shorter service life of the existing overrun clutch are caused by proneness of a folding spring to wearing, and relates to an overrun clutch comprising an inner cam, a left baffle and a right baffle. A plurality of raceways are evenly distributed on the peripheral surface of the inner cam. Opposing sides of the left baffle and/or the right baffle are provided with barrier parts extending over the raceways, and each barrier part is located at the connection of each two adjacent raceways. The rear end of each folding spring is provided with a bent part extending backwards, and the lower portion of each barrier part is provided with a clamp part for clamping the bent part of the folding spring. The folding springs of the overrun clutch are fixed through the bent parts, the upper and lower portions of each folding spring are suspended, and accordingly no wearing occurs, the folding springs are effectively protected from damage due to frictional interference caused by top-bottom contact and average fault-free service life of the overrun clutch is prolonged.
Description
Technical field
The present invention relates to a kind of clutch, relate in particular to a kind of free wheel device that is applied in the twin-turbine torque converter.
Background technique
At present, domestic 80% loader all adopts twin-turbine torque converter, twin-turbine torque converter and free wheel device co-operation, to gearbox input power, can realize the switching between high speed light loading and low-speed heave-load automatically, increase work efficiency, reduce driver's labor intensity.High speed light loading mainly refers to loader transported material or traveling process, and for example the empty bucket of loader or loading are advanced, and this moment, travelling speed was very fast, but running resistance is less; Low-speed heave-load mainly refers to load mechanical shovel dress material, and this moment, scraper bowl inserted in the material, and advance resistance is huge, but forward velocity is lower.
Existing no retainer free wheel device mainly is made up of parts such as input gear 1, right baffle-plate 2, cam ring 3, roller 4, right baffle plate 5, outer ring gear 6 and folded springs 7, as shown in Figure 1 and Figure 2.Cam ring 3, right baffle-plate 2, right baffle plate 5 and input gear 1 are rigidly connected by bolt, be evenly distributed with roller slot on cam ring 3 circumference, seal two end faces of groove with right baffle-plate 2 and right baffle plate 5, place roller 4 and folded spring 7 in the groove, the roller 4 that 7 pairs of folded springs coexist in the groove applies active force, to offset roller 4 and outer ring gear 6 frictional force in a circumferential direction, make roller 4 be adjacent to cam race and outer ring gear raceway all the time.When outer ring gear 6 rotating speeds during greater than input gear 1 rotating speed, outer ring gear 6 and cam 3 fit together (during design roller from locking angle θ less than threshold state) by roller 4, give transmission of power the input gear 1 output.
This structure free wheel device is isolated with the roller slot that distributes on the cam ring circumference and is placed roller, folded spring, the corresponding folded spring of each roller, and folded spring is given pretightening force of each roller, can guarantee that all rollers work simultaneously.
There are two shortcomings in this structure free wheel device: one, cam ring cost height, cam ring and baffle portion are one, as shown in Figure 3, cam ring is generally formed by expensive Bearing Steel GCr15 materials processing, and makes the product cost height by obtaining baffle portion in cam ring removal materials processing mode; Two, the risk that spring location existence and cam and left baffle are interfered, this structure free wheel device spring position structure as shown in Figure 4, that uniform setting equates with roller quantity on the cylindrical of right baffle-plate 2 and stretch out above the folded spring 7 projection, that uniform setting equates with roller quantity on the cylindrical of right baffle plate 5 and stretch out above the folded spring 7 projection, the barrier portion 10 that uniform setting and quantity equate with roller on cam ring 3, constitute the spacing space of spring by the leading flank that is positioned at projection bottom surface on right baffle-plate and the right baffle plate and cam ring barrier portion, in the process of folded spring 7 with the rotation of cam ring 3 one superhigh speeds, be subjected to centrifugal action when moving away from the cam ring central direction on a left side, to-and-fro motion in the spacing space that the inner side surface of right baffle plate and cam ring barrier portion leading flank constitute, folded spring 7 tops may contact with the bottom surface of left projection and right projection frictional interference takes place, and its bottom contacts the problem that frictional interference takes place with the roller surface of cam ring.The interference of folded spring 7 and these parts and friction can cause folded spring impaired and shorten its working life.
Summary of the invention
The objective of the invention is at the folded spring of existing free wheel device easy to wear and cause early failue, short problem of life-span and the free wheel device that a kind of folded spring is not easy to wear, reliability is high, the life-span is long is provided.
Technological scheme of the present invention is achieved in that a kind of free wheel device of structure, comprise cam ring, roller, folded spring, correspondence is fixed on right baffle-plate and the right baffle plate of cam ring both sides, circumferential surface at cam ring is evenly distributed with several roller surfaces, right baffle-plate and or the opposite flank of right baffle plate be provided with the barrier portion of stretching to the roller surface top, barrier portion is positioned at the adjoiner of adjacent two roller surfaces, each roller surface and be positioned at the barrier portion at these roller surface two ends, right baffle-plate and right baffle plate constitute a roller slot, correspondence arranges a roller and folded spring in each roller slot, the front end of folded spring is connected with the roller contact, the rear end is connected with described barrier portion contact, the rear end of folded spring is provided with a bending part that extends back, the bottom of barrier portion is provided with the clamping part of clamping folded spring bending part, and the spring rear portion is fixed.In the present invention, folded spring is fixed by the bending part at its rear portion and the cooperation of clamping part, therefore also just need not to arrange the structure member that prevents that folded spring from throwing away at the top of folded spring, folded spring only contacts with barrier portion with roller respectively at its two ends and is connected, friction can not take place and cause wearing and tearing in the flexible of folded spring with miscellaneous part, so can be prolonged widely the working life of folded spring.
In foregoing invention, clamping part is made of the gap that holds the folded spring bending part between barrier portion bottom and the cam ring, and the bending part of folded spring is clamped in the described gap.
In foregoing invention, barrier portion is made up of the right projection that is arranged on the left projection on the right baffle-plate right flank and be arranged on the right baffle plate left surface, the front-end face of left side projection and right projection flushes mutually and contacts with the ear end face of described folded spring, left side projection and right baffle-plate are structure as a whole, and right projection and right baffle plate are structure as a whole.
The beneficial effect that the present invention compared with prior art has: folded spring is fixed by the bending part at its rear portion and the cooperation of clamping part among the present invention, therefore also just need not to arrange the structure member that prevents that folded spring from throwing away at the top of folded spring, folded spring only contacts with barrier portion with roller respectively at its two ends and is connected, friction can not take place and cause wearing and tearing in the flexible of folded spring with miscellaneous part, so can be prolonged widely the working life of folded spring.
Description of drawings
Fig. 1 is the longitudinal profile view of existing free wheel device;
Fig. 2 is existing free wheel device side direction half sectional view;
Fig. 3 is the structural representation of cam ring in the existing free wheel device;
Fig. 4 is the detailed view of I among Fig. 2;
Fig. 5 is the longitudinal profile view of free wheel device of the present invention;
Fig. 6 is the side direction half sectional view of free wheel device of the present invention;
Fig. 7 is the detailed view of II among Fig. 6;
Fig. 8 is the structural representation of right baffle plate among the present invention;
Fig. 9 is the structural representation of right baffle-plate among the present invention;
Figure 10 is folded spring schematic representation of the present invention;
Figure 11 is right baffle-plate of the present invention, right baffle plate, cam, roller and folded spring package assembly schematic representation.
Component title and sequence number among the figure:
Embodiment
Below in conjunction with the description of drawings specific embodiments
Shown in Figure 7 as Fig. 5 Fig. 6, free wheel device in the present embodiment includes parts such as input gear 1, right baffle-plate 2, cam ring 3, roller 4, right baffle plate 5, outer ring gear 6 and folded spring 7, wherein right baffle-plate 2 and right baffle plate 5 lay respectively at the both sides of cam ring, and cam ring 3, input gear 1 and right baffle-plate 2 and right baffle plate 5 are bolted to connection.Circumferentially be evenly distributed with several roller surfaces 31 on the circumferential surface of cam ring 3.Shown in Figure 9 as Fig. 8, the right flank of right baffle-plate 2 is provided with the left projection 21 identical with roller surface quantity, the left surface of right baffle plate 5 is provided with and the same number of right projection 51 of roller surface, right baffle-plate 2, behind right baffle plate 5 and cam ring 3 mounts, left projection 21 on the right baffle-plate and the right projection 51 on the right baffle plate be barrier portion 10 of corresponding composition one by one, left projection 21 in each barrier portion 10 and the front-end face of right projection 51 flush, each barrier portion 10 is positioned at the joint of two adjacent faces that are rolled into 31 accordingly, right baffle-plate 2, right baffle plate 5, cam ring 3, the barrier portion that is made of left projection 21 and right projection 51 that is positioned at the roller surface two ends constitutes a roller slot together, correspondence is provided with a roller 4 and folded spring 7 in each roller slot, the front end of folded spring 7 is connected with the cylinder upper thread contact of roller 4, the rear end of folded spring 7 is right bending part 71 backward then, this bending part is in the clamping part that lower surface and the gap between the cam ring of barrier portion constitute and be fixed, and the ear end face of folded spring is connected with the front-end face contact of barrier portion.
Claims (3)
1. free wheel device, comprise cam ring, roller, folded spring, correspondence is fixed on right baffle-plate and the right baffle plate of cam ring both sides, circumferential surface at cam ring is evenly distributed with several roller surfaces, it is characterized in that right baffle-plate and or the opposite flank of right baffle plate be provided with the barrier portion of stretching to the roller surface top, described barrier portion is positioned at the adjoiner of adjacent two roller surfaces, each roller surface and be positioned at the barrier portion at these roller surface two ends, right baffle-plate and right baffle plate constitute a roller slot, correspondence arranges a described roller and folded spring in each roller slot, the front end of described folded spring is connected with the roller contact, the rear end contacts with described barrier portion, the rear end of described folded spring is provided with a bending part that extends back, and the bottom of described barrier portion is provided with the clamping part of the described folded spring bending part of clamping.
2. free wheel device according to claim 1 is characterized in that described clamping part is made of the gap that holds described folded spring bending part between barrier portion bottom and the cam ring, and the bending part of described folded spring is clamped in the described gap.
3. free wheel device according to claim 2, it is characterized in that described barrier portion is made up of the right projection that is arranged on the left projection on the right baffle-plate right flank and be arranged on the right baffle plate left surface, the front-end face of described left projection and right projection flushes mutually and contacts with the ear end face of described folded spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216028.4A CN103277426B (en) | 2013-06-03 | 2013-06-03 | Free wheel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216028.4A CN103277426B (en) | 2013-06-03 | 2013-06-03 | Free wheel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277426A true CN103277426A (en) | 2013-09-04 |
| CN103277426B CN103277426B (en) | 2015-09-02 |
Family
ID=49060024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310216028.4A Active CN103277426B (en) | 2013-06-03 | 2013-06-03 | Free wheel device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277426B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956817A (en) * | 2017-12-05 | 2018-04-24 | 广西柳工机械股份有限公司 | External star-wheel type one-way clutch |
| CN109296673A (en) * | 2018-11-21 | 2019-02-01 | 上海申赛机电控制技术有限公司 | Cantilever flat spring reset overrunning clutch |
| CN110094433A (en) * | 2019-05-20 | 2019-08-06 | 杭州前进通用机械有限公司 | Freewheel clutch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04302718A (en) * | 1991-03-29 | 1992-10-26 | Ntn Corp | One-way clutch |
| US5636720A (en) * | 1995-11-29 | 1997-06-10 | General Motors Corporation | Moldable roller clutch cage with full support pockets |
| US5669476A (en) * | 1996-05-14 | 1997-09-23 | General Motors Corporation | Roller clutch with secure spring to cage mount |
| CN202140477U (en) * | 2011-03-23 | 2012-02-08 | 石光林 | Overrun clutch retainer |
| CN102913564A (en) * | 2012-11-07 | 2013-02-06 | 广西柳工机械股份有限公司 | Overrunning clutch |
-
2013
- 2013-06-03 CN CN201310216028.4A patent/CN103277426B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04302718A (en) * | 1991-03-29 | 1992-10-26 | Ntn Corp | One-way clutch |
| US5636720A (en) * | 1995-11-29 | 1997-06-10 | General Motors Corporation | Moldable roller clutch cage with full support pockets |
| US5669476A (en) * | 1996-05-14 | 1997-09-23 | General Motors Corporation | Roller clutch with secure spring to cage mount |
| CN202140477U (en) * | 2011-03-23 | 2012-02-08 | 石光林 | Overrun clutch retainer |
| CN102913564A (en) * | 2012-11-07 | 2013-02-06 | 广西柳工机械股份有限公司 | Overrunning clutch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956817A (en) * | 2017-12-05 | 2018-04-24 | 广西柳工机械股份有限公司 | External star-wheel type one-way clutch |
| CN107956817B (en) * | 2017-12-05 | 2019-09-17 | 广西柳工机械股份有限公司 | External star-wheel type one-way clutch |
| CN109296673A (en) * | 2018-11-21 | 2019-02-01 | 上海申赛机电控制技术有限公司 | Cantilever flat spring reset overrunning clutch |
| CN110094433A (en) * | 2019-05-20 | 2019-08-06 | 杭州前进通用机械有限公司 | Freewheel clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277426B (en) | 2015-09-02 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |