CN2743610Y - Pawl wheel type overriding clutch - Google Patents
Pawl wheel type overriding clutch Download PDFInfo
- Publication number
- CN2743610Y CN2743610Y CN 200420029913 CN200420029913U CN2743610Y CN 2743610 Y CN2743610 Y CN 2743610Y CN 200420029913 CN200420029913 CN 200420029913 CN 200420029913 U CN200420029913 U CN 200420029913U CN 2743610 Y CN2743610 Y CN 2743610Y
- Authority
- CN
- China
- Prior art keywords
- ratchet
- pawl
- afterbody
- clutch
- overrunning clutch
- 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
Links
- 239000000463 material Substances 0.000 claims description 7
- 230000005291 magnetic effect Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model discloses a pawl wheel type overriding clutch, comprising a pawl wheel provided with ratchets, a pawl board provided with pawls and a reset device; a bearing is supported between the pawl wheel and the pawl board so as to assure the coaxial rotating of the pawl wheel and the pawl board. The pawl structure is an integral structure, consisting of a head part, an axis part and a tail part; the head part of the pawl comprises a contact end provided with an interface; the axis part of the pawl through an axial pin is rotatably arranged on the pawl board; the tail part of the pawl and the reset device are correspondingly equipped with an acting force for bearing the reset device; from a top view, the pawl structure is in shape of ' T'; the width of the contact end of the head part of the structure is larger than the width of the axis part and the tail part. When the clutch is used for a frequent meshing state, the pawl structure of the utility model can be reset quickly; the accuracy of mesh of the ratchets can be increased; when the clutch in a state of long time overriding, the pawl and the ratchets can be completely disengaged so as to avoid grinding.
Description
Technical field
The utility model relates to a kind of ratchet type overrunning clutch, and its novel pawl structures and resetting means thereof can make this free wheel device be used for the frequent working state that meshes of heavy duty, the also working state that can be used for surmounting for a long time stably in a long term.
Background technique
China utility model patent CN91208227.5 discloses a kind of inertial centrifugal formula ratchet, wherein is provided with a magnet ring below ratchet.When gear rotates, thereby ratchet radially outward under action of centrifugal force opens with ratchet on the ratchet and is meshed.According to the disclosed technological scheme of this utility model patent, thereby to make it the power that radially outward swing is meshed with ratchet on the ratchet on the ratchet be centrifugal force owing to act on, so when ratchet rotates inflexible the time, this ratchet just can not be worked reliably.
U.S. Pat 5,205,386 disclose a kind of ratchet type overrunning clutch that has the ratchet holding device, wherein the radial outside at the ratchet end of engagement is provided with magnet, when the rotating speed of output shaft surpasses desired value, ratchet radially outward swing under action of centrifugal force in case it contacts with corresponding magnet, will be maintained by magnet.This clutch still is to take by the spring force as the ratchet engagement on swing of motivational drive ratchet and the ratchet, the working state that this clutch can only be used for surmounting for a long time.When heavy duty frequently surmounts, can load repeatedly, continually spring, the acceleration spring fatigue fracture, thus cause the whole clutch can not proper functioning.In addition, ratchet is acting in conjunction and ratchet engagement or the disengagement that relies on centrifugal force, elastic force and magnetic force, and the magnetic force decay of the instability of clutch rotational speed, the fatigue of spring and magnet all can influence the long-term proper functioning of clutch.
China utility model patent ZL00254031.2 discloses the ratchet type overrunning clutch that a kind of ratchet relies on magnetic force to reset.This clutch is applicable to the working state of frequent engagement, and when being used for surmounting working state for a long time, ratchet and ratchet need frequently contact, and is easy to wear and parts are damaged.It is interior ring that this patent limits pawl disk, and ratchet is an outer shroud, and under some applying working condition, it is the structural type of outer shroud that free wheel device must adopt with the pawl disk.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing free wheel device technology, and a kind of ratchet type overrunning clutch that uses novel pawl structures and resetting means thereof is provided, and improves the usability of free wheel device.When this clutch was used for frequent engagement, novel pawl structures can reset rapidly, improved the accuracy of mesh with ratchet; When clutch is in when surmounting state for a long time, ratchet and ratchet can be thrown off fully, avoid wearing and tearing.This is that a kind of service behaviour is reliable more, Applicable scope is extensive more, the ratchet type overrunning clutch of longer service life.
The purpose of this utility model realizes by following proposal.
The ratchet type overrunning clutch that the utility model is related, comprise the ratchet that is provided with ratchet, be provided with the pawl disk of ratchet and resetting means thereof, adopt bearings to guarantee that the ratchet and pawl dish can coaxial rotation between the two, the as a whole structure of described pawl structures, be divided into stem, three parts of axial region and afterbody, the ratchet stem comprises the contact jaw with surface of contact, the ratchet axial region is installed in rotation on the pawl disk by pivot pin, the corresponding setting with resetting means of ratchet afterbody is to bear the active force of resetting means, described pawl structures is overlooked and is " T " font, and the width of described pawl structures stem contact jaw is greater than the width of its axial region and afterbody.
The characteristics of this ratchet type overrunning clutch are that stem, axial region and the afterbody of its pawl structures are overlooked and are " T " font, stem comprises the contact jaw with surface of contact, its width is greater than the width of ratchet axial region and afterbody, this structure optimization the stress of ratchet, make the extrusion stress that ratchet stem surface of contact is subjected to and the shearing stress of pivot pin be in par.The wide of stem contact jaw goes out partly can also play the position-limiting action that pawl structures rotates, and when ratchet and ratchet disengaging engagement, the afterbody of pawl structures can not come in contact with ratchet.
Adopt the ratchet type overrunning clutch of this " T " font pawl structures, the more reasonable stress of ratchet and pivot pin thereof, with other type free wheel device comparison of same structure size, this clutch can transmit bigger moment of torsion; Ratchet number and ratchet number be prime number each other, during engagement, a ratchet and ratchet engagement is arranged in turn at every turn, has prolonged the working life of clutch; By changing the quantity and the physical dimension of ratchet and ratchet, just can effectively change the accuracy of mesh (return and end the angle) or the transmitting torque of clutch; This pawl structures reaches and frequent engagement of ratchet or the long-time working state that breaks away from by adjusting the interaction relationship of reposition force and centrifugal force, makes that the operation of clutch is stable more, reliable.
Description of drawings
Fig. 1 is that a kind of ratchet type overrunning clutch pawl disk of the utility model is the side view of interior ring as clutch outer shroud, ratchet;
Fig. 2 is the drawing in side sectional elevation of pawl disk shown in Figure 1 as the clutch outer shroud;
Fig. 3 is that pawl disk is the side view of outer shroud as ring, ratchet in the clutch;
Fig. 4 is that pawl disk shown in Figure 3 is as the drawing in side sectional elevation that encircles in the clutch;
Fig. 5 is the side view of pawl structures shown in Figure 1;
Fig. 6 is the plan view of pawl structures shown in Figure 5;
Fig. 7 is the working state figure that ratchet breaks away from ratchet fully.
Embodiment
Shown in figure, the utility model is a kind of ratchet type overrunning clutch, comprises the ratchet 1 that is provided with a plurality of ratchets 7, the pawl disk 2 that a plurality of ratchets 3 are installed, and can adopt bearing 15 to support between the two, and guarantee that ratchet 1 and pawl disk 2 can coaxial rotation.Described ratchet 3 as a whole structures, be divided into stem 9, have the axial region 10 and the afterbody 11 of axis hole 12 according to function, described stem 9 comprises the contact jaw 8 with surface of contact 13, and the width of contact jaw is greater than the width of axial region 10 and afterbody 11, and integral body is overlooked and is "T"-shaped as shown in Figure 6.Ratchet 3 is supported on the pawl disk 2 rotationally by pivot pin 4, pawl disk 2 and ratchet 1 coaxial setting, ratchet 3 can mesh with ratchet 7 under the effect of resetting means rightly, resetting means can utilize the afterbody of the tension of the suction of magnet or spring at ratchet 3, makes the rotation of ratchet 3 help engagement with ratchet 7.
The resetting means of ratchet 3 can adopt spring or magnet as required, preferred embodiment is to adopt magnet 6 that ratchet 3 is resetted, and this moment, ratchet 3 should adopt ferromagnetic substance, such as iron and steel.It is inner and be fixed on the pawl disk 2 that described each magnet 6 preferably is embedded in installation sleeve 5, relative with the afterbody 11 of described ratchet 3 but do not contact, so that magnetic attraction is to the maximum is good, described installation sleeve 5 adopts non-magnet_conductible materials to make.Ratchet 3 improves the surface hardness of surface of contact 13 and axis hole 12 through Overheating Treatment, will guarantee also that simultaneously the inside configuration material of ratchet 3 keeps corresponding toughness.
As shown in Figure 6, the position of centre of gravity of described ratchet 3 can be adjusted as required, when free wheel device was used for frequently meshing operating mode, the position of centre of gravity of ratchet 3 should make moment that centrifugal force produced less than the reseting torque of resetting means, and preferably the moment direction is identical; When free wheel device was used for surmounting operating mode for a long time, the position of centre of gravity of ratchet 3 should make moment that centrifugal force produced greater than the reseting torque of resetting means, and the moment direction is opposite.Like this, free wheel device just can rely on the interaction of reposition force and centrifugal force according to different usage requirements, makes ratchet 3 flexible and ratchet engagement or disengagements.
The stem 9 of described ratchet 3, axial region 10 and afterbody 11 plan views are " T " font, the width of contact jaw 8 is greater than the width of ratchet 3 remaining parts, on the one hand, it is wide to go out spacing that part and counter structure on the pawl disk 2 are used for that ratchet 3 rotates, and guarantees that the afterbody 11 of ratchet 3 does not contact with ratchet 7; On the other hand, the area of contact when increasing surface of contact 13 with ratchet 7 engagements reduces extrusion stress, makes that the stress level at ratchet and each position of pivot pin is suitable, reaches optimized structural design.On described ratchet 3, can be inlaid with the material of density, to adjust the structural focus position of ratchet 3 greater than described ratchet density of material.
For improving the accuracy of mesh of clutch, the number of the number of ratchet 3 and ratchet 7 is prime number each other.Have a ratchet and ratchet engagement transmitting torque at least at every turn.According to actual usage requirement,, effectively change the accuracy of mesh (return and end the angle) or the transmitting torque of clutch by changing the number and the physical dimension of ratchet 3 or ratchet 7.When having increased the quantity of ratchet 3 and ratchet 7, the corresponding minimizing of physical dimension of ratchet 3 and ratchet 7, transmitting torque also reduces; When having reduced the quantity of ratchet 3 and ratchet 7, the corresponding increase of physical dimension of ratchet 3 and ratchet 7, transmitting torque also improves.
The angle of the afterbody of pawl structures and stem its objective is to make the active force maximum of resetting means to the ratchet afterbody, and the ratchet stem can mesh with ratchet or throw off neatly according to concrete usage requirement and different as shown in Figure 5.When pawl disk during at interior ring, angle is less relatively; When pawl disk during at outer shroud, angle is relatively large.
The internal surface of ratchet 3 axis holes 12 can be provided with guiding gutter 14 as shown in Figure 6, so that pivot pin is lubricated, farthest reduces wear.Axis hole 12 should reduce ratchet 3 impact to pivot pin 4 when meshing with the matching gap of pivot pin 4 as far as possible, should guarantee that simultaneously the rotation of ratchet 3 is flexible.
As a kind of mode of execution of the present utility model as shown in Figure 1 ratchet 1 be arranged on inside, pawl disk 2 is arranged on the outside of described ratchet 1, this structure is applicable to the operating mode that similar gas turbine starts, and ratchet links to each other with the live axle of starter, and pawl disk links to each other with the gas turbine driven shaft.Under the effect of starter, after gas turbine started and reaches certain rotating speed, the ratchet of clutch kept the disengaged position with ratchet under action of centrifugal force, avoided the frequent engagement of ratchet and ratchet and caused wearing and tearing.
As another kind of mode of execution of the present utility model as shown in Figure 3 ratchet 1 be arranged on the outside, pawl disk 2 is arranged on the inside of described ratchet 1, this structure is applicable to the operating mode of the frequent engagement of similar pumping unit, and ratchet links to each other with belt pulley, and pawl disk links to each other with motor driving shaft.Ratchet number and ratchet number be prime number each other, during engagement, a ratchet and ratchet engagement is arranged in turn at every turn, has prolonged the working life of clutch.
Fig. 7 is the working state that ratchet breaks away from ratchet fully, and this moment, the ratchet afterbody can not contact with ratchet.
Claims (6)
1. ratchet type overrunning clutch, comprise the ratchet that is provided with ratchet, be provided with the pawl disk of ratchet and resetting means thereof, adopt bearings to guarantee that the ratchet and pawl dish can coaxial rotation between the two, the as a whole structure of described pawl structures, be divided into stem, three parts of axial region and afterbody, the ratchet stem comprises the contact jaw with surface of contact, the ratchet axial region is installed in rotation on the pawl disk by pivot pin, the corresponding setting with resetting means of ratchet afterbody is to bear the active force of resetting means, it is characterized in that: described pawl structures is overlooked and is " T " font, and the width of described pawl structures stem contact jaw is greater than the width of its axial region and afterbody.
2. ratchet type overrunning clutch according to claim 1 is characterized in that: the number of ratchet and the number of ratchet be prime number each other, is inlaid with the material of density greater than described ratchet density of material on described ratchet, to adjust the position of centre of gravity of pawl structures.
3. ratchet type overrunning clutch according to claim 1, it is characterized in that: described ratchet resetting means adopts the magnet that is fixed on the pawl disk, so that magnet corresponding with described ratchet afterbody is to the magnetic force maximum of ratchet afterbody, and can not contact with the ratchet afterbody in normal operation.
4. ratchet type overrunning clutch according to claim 3 is characterized in that: described magnet is arranged in the installation sleeve of being made by non-magnet_conductible material, and both are fixed on the pawl disk jointly.
5. ratchet type overrunning clutch according to claim 1 and 2 is characterized in that: described ratchet is arranged on clutch inside as interior ring structure, and the outer ring structure of pawl disk conduct is arranged on the outside of described ratchet, and both are with coaxial rotation.
6. ratchet type overrunning clutch according to claim 1 and 2 is characterized in that: described ratchet is arranged on clutch Outside as outer ring structure, and pawl disk is arranged on the inside of described ratchet as interior ring structure, and both are with coaxial rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029913 CN2743610Y (en) | 2004-10-12 | 2004-10-12 | Pawl wheel type overriding clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029913 CN2743610Y (en) | 2004-10-12 | 2004-10-12 | Pawl wheel type overriding clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743610Y true CN2743610Y (en) | 2005-11-30 |
Family
ID=35633629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029913 Expired - Fee Related CN2743610Y (en) | 2004-10-12 | 2004-10-12 | Pawl wheel type overriding clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743610Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467273A (en) * | 2014-11-21 | 2015-03-25 | 天津市利尔港机械制造有限公司 | Ratchet wheel type energy-saving clutch adjuster with detachable belt wheel |
| CN109812515A (en) * | 2017-11-21 | 2019-05-28 | 周承岗 | Combined type freewheel clutch |
| CN112161007A (en) * | 2020-10-19 | 2021-01-01 | 秦金凤 | Pawl anti-collision mechanism of pawl type overrunning clutch |
| CN112283265A (en) * | 2020-09-25 | 2021-01-29 | 河北拓熙机械科技有限公司 | Clutch device |
| US12058960B2 (en) | 2018-11-20 | 2024-08-13 | Nanjing Chervon Industry Co., Ltd. | Walk-behind self-propelled machine |
-
2004
- 2004-10-12 CN CN 200420029913 patent/CN2743610Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467273A (en) * | 2014-11-21 | 2015-03-25 | 天津市利尔港机械制造有限公司 | Ratchet wheel type energy-saving clutch adjuster with detachable belt wheel |
| CN104467273B (en) * | 2014-11-21 | 2015-10-21 | 天津市利尔港机械制造有限公司 | The dismountable ratchet-type energy-saving clutch regulator of belt pulley |
| CN109812515A (en) * | 2017-11-21 | 2019-05-28 | 周承岗 | Combined type freewheel clutch |
| US12058960B2 (en) | 2018-11-20 | 2024-08-13 | Nanjing Chervon Industry Co., Ltd. | Walk-behind self-propelled machine |
| CN112283265A (en) * | 2020-09-25 | 2021-01-29 | 河北拓熙机械科技有限公司 | Clutch device |
| CN112283265B (en) * | 2020-09-25 | 2022-04-29 | 河北拓熙机械科技有限公司 | Clutch device |
| CN112161007A (en) * | 2020-10-19 | 2021-01-01 | 秦金凤 | Pawl anti-collision mechanism of pawl type overrunning clutch |
| CN112161007B (en) * | 2020-10-19 | 2022-08-09 | 山东沃泰克传动机械有限公司 | Pawl anti-collision mechanism of pawl type overrunning clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN CITY JINGBAO TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HE JIANJUN Effective date: 20060217 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060217 Address after: 300280 Wanxiang Road comprehensive building, Dagang Economic Development Zone, Tianjin, B-504 Patentee after: Jingbao Science & Technology Co., Ltd., Tianjin City Address before: 300280 room 4, unit 6, West Lane, Dagang Oilfield, Dagang, Tianjin, 201 Patentee before: He Jianjun |
|
| 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 |