CN205780674U - Quiet ratchet mechanism - Google Patents
Quiet ratchet mechanism Download PDFInfo
- Publication number
- CN205780674U CN205780674U CN201620654999.6U CN201620654999U CN205780674U CN 205780674 U CN205780674 U CN 205780674U CN 201620654999 U CN201620654999 U CN 201620654999U CN 205780674 U CN205780674 U CN 205780674U
- Authority
- CN
- China
- Prior art keywords
- fork
- ratchet
- wobble plate
- articulated
- free end
- 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
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Abstract
This utility model relates to the drive mechanism of agricultural machinery, it is specially a kind of quiet ratchet mechanism, including frame, ratchet, ratchet and actuating unit, the axis of rotation of ratchet is connected to frame, wherein, also include crank, connecting rod, first fork, second fork, and wobble plate, actuating unit connecting crank, one end of the free end articulated linkage of crank, the free end of hinged first fork of the other end of connecting rod, first fork be articulated with wobble plate, the free end of the first fork is also articulated with the drive end of the second fork, the driven end hinged claw of the second fork, two limited posts it are fixed with in wobble plate, two limited posts are positioned at the both sides of the first fork, wobble plate is further fixed on two limiting plates, ratchet is positioned between two limiting plates and is slidably connected with limiting plate, wobble plate is articulated with rotating shaft.This utility model is in order to solve to use spring excessive as ratchet pawl reset part noise, it is intended that provide the click drive mechanism of a kind of low noise.
Description
Technical field
This utility model relates to the drive mechanism of agricultural machinery, a kind of quiet ratchet mechanism.
Background technology
Ratchet mechanism, a kind of one-way intermittent motion mechanism being made up of ratchet and pawl.Ratchet mechanism is commonly used in various machine
In bed and automat in the indexing of index(ing) feed or rotary table, also it is commonly used on jack.Ratchet mechanism in bicycle
For unidirectional drive, in hand winch, ratchet mechanism is conventional in case non-return turn.It is often accompanied by noise and shakes during ratchet mechanism work
Dynamic, therefore its operating frequency can not be too high.
The noise of ratchet mechanism is the reset element using spring to be ratchet due to it, and ratchet slides on ratchet and impacts spine
Wheel produces.Its scope of application of the influence of noise of ratchet mechanism, such as need when indoor use ratchet mechanism low noise or
Noiseless.
Utility model content
This utility model is in order to solve to use spring excessive as ratchet pawl reset part noise, it is intended that provide a kind of low noise
Click drive mechanism.
This utility model offer base case is: quiet ratchet mechanism, including frame, ratchet, ratchet and actuating unit,
The axis of rotation of ratchet is connected to frame, wherein, also includes crank, connecting rod, the first fork, the second fork and wobble plate, power
Mechanism's connecting crank, one end of the free end articulated linkage of crank, the free end of hinged first fork of the other end of connecting rod, first
Fork be articulated with wobble plate, the free end of the first fork is also articulated with the drive end of the second fork, the driven end of the second fork hinge
Connecing ratchet, wobble plate is fixed with two limited posts, two limited posts are positioned at the both sides of the first fork, and wobble plate is further fixed on two limiting plates,
Ratchet is positioned between two limiting plates and is slidably connected with limiting plate, and wobble plate is articulated with rotating shaft.
Operation principle: actuating unit drives crank to rotate, and when the free end of crank throw crank is near ratchet, connecting rod pushes away
Dynamic the first hinged fork and the second fork, be articulated with wobble plate due to the first fork, and the first fork also limits simultaneously
In two spacing intercolumniations, so when connecting rod promotes, the first fork can promote the second fork, the detent slide company that the second fork is hinged
Be connected between two limiting plates, ratchet stretch out and with ratchet card and, connecting rod promote during, fork entirety turns also relative to rotating shaft
Dynamic；When the free end of crank throw crank is away from ratchet, connecting rod can pull the first hinged fork and the second fork,
Now ratchet rollback, until the first fork offsets with limited post, then connecting rod pulls wobble plate entirety backswing.Then above-mentioned mistake is circulated
Journey.
Compared with prior art, the advantage of this programme is: in above-mentioned cyclic process, and the ratchet in this programme is different from
Using spring as the ratchet of return unit in prior art, during the free end of crank is away from ratchet, ratchet is at rollback
Process can disengage with ratchet completely, then wobble plate just starts just to start swing, and during rollback, ratchet is not sent out with ratchet
Raw contact, does not collide and would not send sound yet.Therefore this programme is realizing the merit of click during running
Can will not produce too much noise simultaneously.
Scheme two: based on scheme preferred, ratchet has hollow hole.Beneficial effect: reduce the weight of ratchet, reduces dynamic
Can loss in transmission.
Scheme three: preferred for scheme two, also includes connecting post, the free end of the first fork and the drive end of the second fork
And the end of connecting rod is respectively provided with connecting hole, connects post and be positioned at connecting hole and coordinate with connecting hole interval.Beneficial effect: this is even
The mode of connecing is relatively simple by the first fork, the second fork and rod hinge connection mode together.
Scheme four: preferred for scheme three, limited post has cushion pad.Beneficial effect: the first fork can be sent out with limited post
Raw collision, arranges cushion pad and increases the service life of the two.
Scheme five: preferred for scheme four, ratchet near one end of ratchet less than the other end of ratchet.Beneficial effect: spine
Pawl is set to less shape and is easier to coordinate with ratchet near ratchet one end.
Scheme six: preferred for scheme five, limiting plate is coated with polishing layer.Beneficial effect: limiting plate wants ratchet friction, if
Put polishing layer and reduce the friction of the two.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model quiet ratchet mechanism embodiment.
Detailed description of the invention
Below by detailed description of the invention, this utility model is described in further detail:
Reference in Figure of description includes: frame 1, crank 2, connecting rod the 3, first fork the 4, second fork 5, ratchet
6, ratchet 7, wobble plate 8, limited post 81, limiting plate 82.
Quiet ratchet mechanism as shown in Figure 1, including frame 1, ratchet 7, ratchet 6 and motor, the axis of rotation of ratchet 7
It is connected to frame 1, wherein, also includes crank 2, connecting rod the 3, first fork the 4, second fork 5 and wobble plate 8, motor connecting crank
2, one end of the free end articulated linkage 3 of crank 2, the free end of hinged first fork 4 of the other end of connecting rod 3, the first fork 4
Being articulated with wobble plate 8, the free end of the first fork is also articulated with the drive end of the second fork 5, the hinged spine of driven end of the second fork 5
Pawl 6, wobble plate 8 is fixed with two limited posts 81, and two limited posts 81 are positioned at the both sides of the first fork 4, and it is spacing that wobble plate 8 is further fixed on two
Plate 82, ratchet 6 is positioned between two limiting plates 82 and is slidably connected with limiting plate 82, and wobble plate 8 is articulated with rotating shaft.Ratchet 7 has hollow out
Hole.Also including connecting post, the free end of the first fork 4 and the end of the drive end of the second fork 5 and connecting rod 3 are respectively provided with connection
Hole, connects post and is positioned at connecting hole and coordinates with connecting hole interval.Limited post 81 has cushion pad.Ratchet 6 is near the one of ratchet 7
End is less than the other end of ratchet 6.Limiting plate 82 is coated with polishing layer.
Operation principle: motor drives crank 2 to rotate, when the free end of crank 2 throw crank 2 is near ratchet 7, connecting rod 3
Promote the first hinged fork 4 and the second fork 5, be articulated with wobble plate 8, simultaneously the first fork 4 due to the first fork 4
It is also limited between two limited posts 81, so when connecting rod 3 promotes, the first fork 4 can promote the second fork 5, and the second fork 5 is hinged
Ratchet 6 be slidably connected between two limiting plates 82, ratchet 6 stretch out and with ratchet 7 card and, connecting rod 3 promotion during, fork
Overall also relative to axis of rotation；When the free end of crank 2 throw crank 2 is away from ratchet 7, connecting rod 3 can pull and be hinged on one
The first fork 4 and the second fork 5 risen, now ratchet 6 rollback, until the first fork 4 offsets with limited post 81, then connecting rod 3
Pull the overall backswing of wobble plate 8.Then said process is circulated.
Ratchet 7 has hollow hole.The weight of ratchet 7 can be reduced, reduce kinetic energy loss in transmission.Also include connecting
Post, the free end of the first fork 4 and the end of the drive end of the second fork 5 and connecting rod 3 are respectively provided with connecting hole, connect post and are positioned at
Coordinate in connecting hole and with connecting hole interval.This connected mode be relatively simple by first fork the 4, second fork 5 and even
The mode that bar 3 is hinged.Limited post 81 has cushion pad.First fork 4 can collide with limited post 81, arranges buffering
Pad increases the service life of the two.Ratchet 6 is less than the other end of ratchet 6 near one end of ratchet 7.Ratchet 6 is near ratchet 7 one end
It is set to less shape be easier to coordinate with ratchet 7.Limiting plate 82 is coated with polishing layer.Limiting plate 82 wants ratchet 6 to rub, and arranges throwing
Photosphere reduces the friction of the two.
Claims (6)
- The most quiet ratchet mechanism, including frame, ratchet, ratchet and actuating unit, the axis of rotation of described ratchet is connected to machine Frame, it is characterised in that also include crank, connecting rod, the first fork, the second fork and wobble plate, described actuating unit connects song Handle, one end of the free end articulated linkage of described crank, the free end of hinged first fork of the other end of described connecting rod, described One fork be articulated with described wobble plate, the free end of described first fork is also articulated with the drive end of the second fork, described second The driven end hinged claw of fork, described wobble plate is fixed with two limited posts, and two limited posts are positioned at the both sides of the first fork, described Wobble plate is further fixed on two limiting plates, and described ratchet is positioned between two limiting plates and is slidably connected with limiting plate, and described wobble plate is articulated with Described rotating shaft.
- Quiet ratchet mechanism the most according to claim 1, it is characterised in that: described ratchet has hollow hole.
- Quiet ratchet mechanism the most according to claim 2, it is characterised in that: also include connecting post, described first fork The end of free end and the drive end of the second fork and connecting rod is respectively provided with connecting hole, described connection post be positioned at connecting hole and with Connecting hole interval coordinates.
- Quiet ratchet mechanism the most according to claim 3, it is characterised in that: described limited post has cushion pad.
- Quiet ratchet mechanism the most according to claim 4, it is characterised in that: described ratchet is less than spine near one end of ratchet The other end of pawl.
- Quiet ratchet mechanism the most according to claim 5, it is characterised in that: described limiting plate is coated with polishing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654999.6U CN205780674U (en) | 2016-06-28 | 2016-06-28 | Quiet ratchet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620654999.6U CN205780674U (en) | 2016-06-28 | 2016-06-28 | Quiet ratchet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780674U true CN205780674U (en) | 2016-12-07 |
Family
ID=58127658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620654999.6U Expired - Fee Related CN205780674U (en) | 2016-06-28 | 2016-06-28 | Quiet ratchet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205780674U (en) |
-
2016
- 2016-06-28 CN CN201620654999.6U patent/CN205780674U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20161207 Termination date: 20170628 |