CN105508461A - High-load-carrying pin column type overrunning clutch - Google Patents
High-load-carrying pin column type overrunning clutch Download PDFInfo
- Publication number
- CN105508461A CN105508461A CN201610093063.5A CN201610093063A CN105508461A CN 105508461 A CN105508461 A CN 105508461A CN 201610093063 A CN201610093063 A CN 201610093063A CN 105508461 A CN105508461 A CN 105508461A
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- China
- Prior art keywords
- pin
- outer ring
- inner ring
- arc plate
- key seat
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- 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.)
- Granted
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- 238000000926 separation method Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 5
- 230000009347 mechanical transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
- F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention discloses a high-load-carrying pin column type overrunning clutch which at least comprises an inner ring, pin bases, pin columns, pin column springs, arc plates, arc plate springs, separation blades and an outer ring. The pin bases are evenly distributed on the inner ring along the circumference. The pin columns and the pin column springs are installed in the pin bases. The arc plates with hinge shafts are evenly distributed along the circumference of the outer ring. If the inner ring serves as a driving element and the outer ring serves as a driven element, when the inner ring rotates anticlockwise, the pin columns make contact with the arc plates, the arc plates are made to rotate around the hinge shafts on the outer ring and fall on the inner ring, the pin columns are clamped in gaps between the arc plates and the outer ring, and accordingly the outer ring is driven to rotate, and the clutch is engaged. When the inner ring rotates clockwise, the pin columns are disengaged from the gaps between the arc plates and the outer ring, the arc plates retract under the action of the springs, the pin columns can freely rotate in an annular gap between the inner ring and the outer ring, the outer ring does not move, and the clutch is disengaged. The overrunning clutch overcome defects of a traditional overrunning clutch and has the advantage of being convenient to install, little in abrasion, long in service life and large in transmission torque.
Description
Technical field
The invention belongs to mechanical transmission fields, relate to a kind of free wheel device, be specifically related to a kind of high-mechanic pin column type free wheel device.
Background technique
Clutch is device indispensable in mechanical transmission, mainly plays a part to connect and cut off power, and free wheel device is wherein a kind of clutch utilizing the rotation speed change of driving link and driven member or gyratory directions to convert and automatically engage and depart from.When driving link drives driven member to rotate together, be called bonding state; When driving link and driven member disengagement are turned round with respective speed, be called and surmount state.Driving element can only make drive element rotate from single direction, therefore also known as overrunning clutch or unilateral bearing.Free wheel device is the important general basic part in mechanical transmission, can be divided into: embedded type, frictional, non-contact type; Embedded type component of rotation sliding pin type, ratchet-type etc.; Frictional divides roller type, wedge block type etc.
Free wheel device has following functions: a, when kinematic chain is not thrown off, can make driven member obtain speed two kinds of speed; B, at a sense of rotation transmitting torque, in the opposite direction then dallies under torque; C realizes stepping intermittent motion and pinpoint calibration function; D and ball screw or other parts support the use, and prevent from reversing, and realize self-locking and return-stopping function; E is as the output mechanism of mechanical pulse formula stepless speed variator.
Roller-type overrunning clutch is with a long history, is loaded in German DRP2804.47h5 patent according to the literature, is used on changement in 1878 with " reversing motor " for topic.Conventional roller-type overrunning clutch is made up of inner ring, roller, outer ring, spring and ejector pin etc., and general inner ring is driving link, and outer ring is driven member.When inner ring rotates counterclockwise, roller is driven outer ring rotating by wedging, and clutch engages; When inner ring rotates clockwise, roller is retracted into sipes position, and outer ring is then motionless, clutch separation.As outer ring is driven and inner ring rotating in same direction by another system, when outer ring rotating speed is lower than inner ring, namely clutch engages automatically; If outer ring rotating speed is higher than inner ring, clutch is then separated automatically.The roller number of roller-type overrunning clutch is less, and element contact stress is large, therefore bearing capacity is low.Roller can free rolling in raceway, often changes with inside and outside circle point of contact, and wearing and tearing are relatively more even, but inner ring manufacturing process is more complicated, and installation precision requires higher.
Wedge overrunning clutch is a kind of novel clutch developed after roller overrunning clutch.Have bearing capacity large, self-locking is reliable, and oppositely free light, compact structure, easy to operate advantage, is widely used in mechanical transmission.First be developed on automobile and aircraft and apply, as the U.S. have employed Wedge type over running clutch on Boeing 707 aircraft and F4-C bomber and M102-105 light howitzer.
No matter roller clutch or wedge block type clutch, all utilizes frictional force to realize transmission, because the friction factor of material and friction area limit, all there is torque less than normal, easily heating, the shortcoming that easy to wear, maintenance is frequent, the life-span is short.The important application product of free wheel device---mechanical pulse formula stepless speed variator, functionally it is made up of input mechanism and output mechanism two-part, and output mechanism is exactly free wheel device.Free wheel device as output mechanism is the weak link in power transmission chain, its bearing capacity and impact resistance relatively low, directly constrain the ability of impulse stepless gear box transferring power, the free wheel device therefore developing high-mechanic and high impact properties has important value.
Given this, this invention exploits a kind of high-mechanic pin column type free wheel device, the inner ring of clutch is uniformly distributed along the circumference the pin of multiple band spring, the outer ring of clutch is uniformly distributed along the circumference the arc of motion plate of multiple band spring, when inner ring rotates counterclockwise, pin contacts with arc plate and the hinge of arc plate on outer ring is rotated and drops on inner ring, and pin is stuck in the gap between arc plate and outer ring, thus drive outer ring rotating, clutch engages; When inner ring rotates clockwise, pin departs from from the gap of arc plate and outer ring, and arc plate bounces back under the action of the spring, and pin freely can rotate in the annular space between Internal and external cycle, and outer ring is then motionless, clutch separation.
Summary of the invention
Technical problem to be solved by this invention is to overcome parts machining that existing free wheel device exists, installation precision requires high, easy to wear, the shortcoming that life-span is short and transmitting torque is less than normal, there is provided a kind of large driving torque large, reliability is high, the novel high-mechanic pin column type free wheel device of long service life, and lays the foundation for promoting the use of of mechanical pulse formula stepless speed variator.
A kind of high-mechanic pin column type free wheel device, is characterized in that: at least comprise: inner ring, key seat, pin, pin spring, arc plate, arc leaf spring, catch and outer ring; Key seat is uniformly distributed along the circumference on inner ring; Pin and spring fitting are in key seat; Outer ring is uniformly distributed along the circumference with the arc plate of hinge; As using inner ring as driving link, outer ring is driven member, then when inner ring rotates counterclockwise, pin contacts with arc plate and the hinge of arc plate on outer ring is rotated and drops on inner ring, pin is stuck in the gap between arc plate and outer ring, thus drives outer ring rotating, and clutch engages; When inner ring rotates clockwise, pin departs from from the gap of arc plate and outer ring, and arc plate bounces back under the action of the spring, and pin freely can rotate in the annular space between Internal and external cycle, and outer ring is then motionless, clutch separation.
Described inner ring has a key seat hole at least, be more excellently no less than two, be more excellently no less than 4, be uniformly distributed along the circumference; Key seat hole can be rectangular, and the long edge in key seat hole axially;
Described key seat is assemblied in key seat hole, and the quantity of key seat is identical with key seat hole number, and key seat quantity is more excellent is no less than two, is more excellently no less than 4.
Described pin is contained in key seat, and the upper end of pin is nearly cuboid, above a face be cambered surface, the radius of curvature of cambered surface is identical with the outer radius of a circle of inner ring; The top of pin can be the cylindrical body with rotating shaft and bearing; Pin is equal with the quantity of key seat.
Further, pin spring described pin is equipped with; Pin can move up and down in key seat.
Described outer ring has a groove at least, the quantity of groove is more excellent is no less than 2, is more excellently no less than 4; Groove is uniformly distributed along the circumference.
Further, described groove is all equipped with arc plate; Catch is provided with in described groove.
Described arc plate and outer ring hinged, arc plate can rotate around hinge.
Further, described arc plate there is extension spring, arc plate can be made to be in closed state without spring during external force.
Further, the radius of curvature of described arc plate is identical with the inner circle radius of outer ring.
beneficial effect of the present invention is: structure is simple, and component are few, installs easily; Wearing and tearing are few, and easy to maintenance, the life-span is long; The moment of torsion larger than traditional free wheel device can be transmitted, greatly expand the application of free wheel device; Significantly improve bearing capacity and the impact resistance of free wheel device, for the extensive popularization and application of mechanical pulse formula stepless speed variator provides safeguard.
Accompanying drawing explanation
Fig. 1 is clutched state schematic diagram.
Fig. 2 is clutch override view.
Fig. 3 is axial pin columniation structure schematic diagram.
Fig. 4 is vertical axial pin structural representation.
Fig. 5 is arc plate structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.The following stated is the preferred embodiment of the present invention; it is noted that for those of ordinary skill in the art, without departing from the inventive concept of the premise; can make some improvement or adjustment, these improve or Adjusted Option should drop in protection scope of the present invention.
As Figure 1-5, the present invention is at least made up of inner ring 1, key seat 2, pin 3, pin spring 4, arc plate 5, arc leaf spring 6, catch 7 and outer ring 8.Inner ring 1 has 4 key seat holes vertically, is uniformly distributed along the circumference; Key seat hole is rectangular, and the long edge in key seat hole axially; Pin spring 4 is contained on pin 3 and is also assemblied in together in key seat 2, and 4 key seat fixing pins are fixed in 4 key seat holes of inner ring 1; Outer ring 8 is opened 4 grooves, and groove is uniformly distributed along the circumference, and the long edge of groove axially; Groove is installed arc plate 5, arc leaf spring 6 and catch 7.
In the present embodiment, the bottom of pin 3 is two cylindrical bodys, is in the two ends, left and right of pin 3, and pin spring 4 is connected on these two cylindrical bodys; The middle-end of pin 3 is nearly cuboid, above a face be cambered surface, the radius of curvature of cambered surface and the outer radius of a circle of inner ring almost identical; The upper end of pin 3 is the cylindrical body with rotating shaft and bearing; Arc plate 5 in the present embodiment is assemblied in by articulated manner on the groove of outer ring 8, and the radius of curvature of arc plate 5 is identical with the inner circle radius of outer ring 8, and arc plate 5 can rotate around hinge, and time closed, the cambered surface of arc plate 5 internal circular surfaces that is lucky and outer ring 8 coincide.
As using inner ring 1 as driving link, outer ring 8 is driven member, then when inner ring 1 rotates counterclockwise, pin 3 contacts with arc plate 5 and arc plate 5 is rotated around hinge and drops on inner ring 1, pin 3 is stuck in the gap between arc plate 5 and outer ring 8, thus drives outer ring 8 to rotate, and clutch engages; When inner ring 1 rotates clockwise, pin 3 departs from from arc plate 5 and the gap of outer ring 8, and arc plate 5 is retraction under arc leaf spring 6 acts on, and pin 3 freely can rotate in the annular space between Internal and external cycle, and 8, outer ring is motionless, clutch separation.If outer ring 8 is all by the drive of another system and inner ring 1 and rotates counterclockwise, when outer ring 8 rotating speed is lower than inner ring 1, namely clutch engages automatically; If when outer ring 8 rotating speed is higher than inner ring 1, clutch is then separated automatically, is in and surmounts state.
Claims (10)
1. a high-mechanic pin column type free wheel device, is characterized in that: at least comprise: inner ring, key seat, pin, pin spring, arc plate, arc leaf spring, catch and outer ring; Key seat is uniformly distributed along the circumference on inner ring; Pin and spring fitting are in key seat; Outer ring is uniformly distributed along the circumference with the arc plate of hinge; As using inner ring as driving link, outer ring is driven member, then, when inner ring rotates counterclockwise, pin contacts with arc plate and arc plate is rotated around hinge and drops on inner ring, and pin is stuck in the gap between arc plate and outer ring, thus drive outer ring rotating, clutch engage; When inner ring rotates clockwise, pin departs from from the gap of arc plate and outer ring, and arc plate bounces back under the action of the spring, and pin freely can rotate in the annular space between Internal and external cycle, and outer ring is then motionless, clutch separation.
2. a kind of high-mechanic pin column type free wheel device according to claim 1, is characterized in that: described inner ring has a key seat hole at least, is more excellently no less than two, is more excellently no less than 4, is uniformly distributed along the circumference; Key seat hole can be rectangular, and the long edge in key seat hole axially.
3. a kind of high-mechanic pin column type free wheel device according to claim 1, it is characterized in that: described key seat is assemblied in key seat hole, the quantity of key seat is identical with key seat hole number, and key seat quantity is more excellent is no less than two, is more excellently no less than 4.
4. a kind of high-mechanic pin column type free wheel device according to claim 1, is characterized in that: described pin is contained in key seat, and the upper end of pin is nearly cuboid, above a face be cambered surface, the radius of curvature of cambered surface is identical with the outer radius of a circle of inner ring; The top of pin is the cylindrical body with rotating shaft and bearing; Pin is equal with the quantity of key seat.
5. a kind of high-mechanic pin column type free wheel device according to claim 4, is characterized in that: described pin is equipped with pin spring; Pin can move up and down in key seat.
6. a kind of high-mechanic pin column type free wheel device according to claim 1, is characterized in that: described outer ring has a groove at least, and the quantity of groove is more excellent is no less than 2, is more excellently no less than 4; Groove is uniformly distributed along the circumference.
7. a kind of high-mechanic pin column type free wheel device according to claim 6, is characterized in that: described groove is all equipped with arc plate; Catch is equipped with in described groove.
8. a kind of high-mechanic pin column type free wheel device according to claim 7, is characterized in that: described arc plate and outer ring hinged, arc plate can rotate around hinge.
9. a kind of high-mechanic pin column type free wheel device according to claim 7, is characterized in that: described arc plate is equipped with arc leaf spring, arc plate can be made to be in closed state without arc leaf spring during external force.
10. a kind of high-mechanic pin column type free wheel device according to claim 7-9, is characterized in that: the radius of curvature of described arc plate is identical with the inner circle radius of outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093063.5A CN105508461B (en) | 2016-02-21 | 2016-02-21 | A kind of high-mechanic pin column type freewheel clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093063.5A CN105508461B (en) | 2016-02-21 | 2016-02-21 | A kind of high-mechanic pin column type freewheel clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508461A true CN105508461A (en) | 2016-04-20 |
| CN105508461B CN105508461B (en) | 2017-10-31 |
Family
ID=55716675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093063.5A Expired - Fee Related CN105508461B (en) | 2016-02-21 | 2016-02-21 | A kind of high-mechanic pin column type freewheel clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508461B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928896A (en) * | 2021-09-26 | 2022-01-14 | 中船澄西船舶修造有限公司 | Protection roller for ship belt entering cabin |
| WO2022120888A1 (en) * | 2020-12-10 | 2022-06-16 | 毛雪梅 | Jaw crusher |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287231A (en) * | 1999-06-30 | 2001-03-14 | 希尔蒂股份公司 | Clutch for drilling tool |
| JP2002005201A (en) * | 2000-06-20 | 2002-01-09 | Nsk Warner Kk | Ratchet type one-way clutch |
| CN2781075Y (en) * | 2004-12-07 | 2006-05-17 | 张天宇 | Bicycle free wheel |
| WO2011054807A1 (en) * | 2009-11-06 | 2011-05-12 | Hilti Aktiengesellschaft | Torque coupling |
| CN105179520A (en) * | 2015-10-09 | 2015-12-23 | 大连华锐重工起重机有限公司 | Ratchet and pawl device for crane |
-
2016
- 2016-02-21 CN CN201610093063.5A patent/CN105508461B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287231A (en) * | 1999-06-30 | 2001-03-14 | 希尔蒂股份公司 | Clutch for drilling tool |
| JP2002005201A (en) * | 2000-06-20 | 2002-01-09 | Nsk Warner Kk | Ratchet type one-way clutch |
| CN2781075Y (en) * | 2004-12-07 | 2006-05-17 | 张天宇 | Bicycle free wheel |
| WO2011054807A1 (en) * | 2009-11-06 | 2011-05-12 | Hilti Aktiengesellschaft | Torque coupling |
| CN105179520A (en) * | 2015-10-09 | 2015-12-23 | 大连华锐重工起重机有限公司 | Ratchet and pawl device for crane |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022120888A1 (en) * | 2020-12-10 | 2022-06-16 | 毛雪梅 | Jaw crusher |
| CN113928896A (en) * | 2021-09-26 | 2022-01-14 | 中船澄西船舶修造有限公司 | Protection roller for ship belt entering cabin |
| CN113928896B (en) * | 2021-09-26 | 2023-11-28 | 中船澄西船舶修造有限公司 | Protective roller for ship belt cabin entry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105508461B (en) | 2017-10-31 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20171031 |