CN105927721A - Noiseless ratchet mechanism - Google Patents
Noiseless ratchet mechanism Download PDFInfo
- Publication number
- CN105927721A CN105927721A CN201610484476.6A CN201610484476A CN105927721A CN 105927721 A CN105927721 A CN 105927721A CN 201610484476 A CN201610484476 A CN 201610484476A CN 105927721 A CN105927721 A CN 105927721A
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- CN
- China
- Prior art keywords
- ratchet
- slide block
- chute
- crank
- noiselessness
- 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.)
- Pending
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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
- F16H—GEARING
- F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
- F16H27/02—Step-by-step mechanisms without freewheel members, e.g. Geneva drives with at least one reciprocating or oscillating transmission member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a transmission mechanism of agricultural machinery, in particular to a noiseless ratchet mechanism. The noiseless ratchet mechanism comprises a frame, a ratchet, a pallet and a power mechanism, and further comprises a crank, a slide block, a rocking plate, a swing rod and pin cylinders; the power mechanism is connected with the crank; a free end of the crank is hinged with the slide block; the rocking plate is provided with a chute; the slide block is positioned in the chute, and is slidingly connected with the chute; the middle part of the rocking plate is rotationally connected to a rotating shaft of the frame; the ratchet is rotationally connected to the rotating shaft of the frame; one end of the swing rod is rotationally connected to the rotating shaft; the pallet is rotationally connected to the other end of the swing rod; one end of the pallet is matched with the ratchet, and the other end of the pallet is positioned between two pin cylinders; and the pin cylinders are fixedly connected with a swing plate. In order to solve high noise caused by serving a spring as a pallet return piece, the invention provides a low-noise ratchet pallet transmission mechanism.
Description
Technical field
The present invention relates to the drive mechanism of agricultural machinery, be specially a kind of noiselessness 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 lathe and automat in the indexing of index(ing) feed or rotary table, is also commonly used on jack.In bicycle, ratchet mechanism is used for unidirectional drive, and in hand winch, ratchet mechanism is conventional in case non-return turn.Being often accompanied by noise and vibration during ratchet mechanism work, 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 what impact ratchet produced on ratchet.Its scope of application of the influence of noise of ratchet mechanism, such as, need ratchet mechanism low noise or noiseless when indoor use.
Summary of the invention
The present invention is to solve that use spring is excessive as ratchet pawl reset part noise, it is intended that provide the click drive mechanism of a kind of low noise.
The present invention provides the base case to be: noiselessness ratchet mechanism, including frame, ratchet, ratchet and actuating unit, wherein, also include crank, slide block, rocker, fork and pin, actuating unit connecting crank, the hinged slide block of free end of crank, rocker has chute, slide block is positioned in chute and is connected with slide, the rotating shaft of frame it is rotationally connected with in the middle part of rocker, pawl wheel is connected to the rotating shaft of frame, one end of fork is rotationally connected with rotating shaft, pawl rotation is connected to the other end of fork, ratchet one end coordinates with ratchet, the other end of ratchet is positioned between two pins, pin is fixedly connected on wobble plate.
Operation principle: actuating unit drives crank to rotate, crank rotarily drives slide block and rotates, slide block drives rocker reciprocally swinging, rocker drives fork reciprocally swinging, and pawl rotation is connected to fork, and one end of ratchet is limited between two pins simultaneously, the ratchet other end promotes ratchet during fork swings toward a direction, during fork swings toward other direction, pin can make ratchet have a swing, and therefore ratchet will not clash into ratchet during rollback.
Compared with prior art, the advantage of this programme is: be forced away from ratchet by pin owing to ratchet promotes after ratchet during rollback, will not as during Spring driving ratchet rollback ratchet lasting with the contacting of ratchet.Using spring can beat ratchet under the drive of spring as during ratchet rollback power when disengaging the ratchet of ratchet, this is the main source of noise.Owing to this programme avoids the shock of ratchet and ratchet, so this programme noise during using is less.
Scheme two: based on scheme preferred, ratchet has hollow hole.Beneficial effect: hollow hole can reduce the weight of ratchet, reduces the power consumption in transmission.
Scheme three: preferred for scheme two, slide block has side shield.Beneficial effect: avoid slide block to deviate from chute.
Scheme four: preferred for scheme three, is coated with wearing layer in chute.Beneficial effect: increase the service life of chute.
Scheme five: preferred for scheme four, pin is coated with cushion.Beneficial effect: the two intermittent collisions with ratchet of pins meeting, arranges cushion and increases the service life of ratchet and pin.
Scheme six: preferred for scheme five, the output shaft side of the being bar axle of ratchet.Beneficial effect: side's bar axle is easy to the square groove of the mechanism with other and is matched and then transmit power.
Accompanying drawing explanation
Fig. 1 is the structural representation of noiselessness ratchet mechanism embodiment of the present invention.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference in Figure of description includes: frame 1, crank 2, slide block 3, rocker 4, ratchet 5, ratchet 6, fork 7, pin 8, chute 41, hollow hole 51, side's bar axle 52.
Noiselessness ratchet mechanism as shown in Figure 1, including frame 1, ratchet 5, ratchet 6 and motor, wherein, also include crank 2, slide block 3, rocker 4, fork 7 and pin 8, motor connecting crank 2, the hinged slide block of free end 3 of crank 2, rocker 4 has chute 41, slide block 3 is positioned in chute 41 and is slidably connected with chute 41, the rotating shaft of frame 1 it is rotationally connected with in the middle part of rocker 4, ratchet 5 is rotationally connected with the rotating shaft of frame 1, one end of fork 7 is rotationally connected with rotating shaft, ratchet 6 is rotationally connected with the other end of fork 7, ratchet 6 one end coordinates with ratchet 5, the other end of ratchet 6 is positioned between two pins 8, pin 8 is fixedly connected on wobble plate.Ratchet 5 has hollow hole 51.Slide block 3 has side shield.It is coated with wearing layer in chute 41.It is coated with cushion on pin 8.The output shaft side of the being bar axle 52 of ratchet 5.
Operation principle: actuating unit drives crank 2 to rotate, crank 2 rotarily drives slide block 3 and rotates, slide block 3 drives rocker 4 reciprocally swinging, rocker 4 drives fork 7 reciprocally swinging, and ratchet 6 is rotationally connected with fork 7, and one end of ratchet 6 is limited between two pins 8 simultaneously, ratchet 6 other end promotes ratchet 5 during fork 7 swings toward a direction, during fork 7 swings toward other direction, pin 8 can make ratchet 6 have a swing, and therefore ratchet 6 will not clash into ratchet 5 during rollback.
Ratchet 5 has hollow hole 51.Hollow hole 51 can reduce the weight of ratchet 5, reduces the power consumption in transmission.Slide block 3 has side shield.Slide block 3 is avoided to deviate from chute 41.It is coated with wearing layer in chute 41.Increase the service life of chute 41.It is coated with cushion on pin 8.The two intermittent collisions with ratchet 6 of pins 8 meeting, arrange cushion and increase the service life of ratchet 6 and pin 8.The output shaft side of the being bar axle 52 of ratchet 5.Side's bar axle 52 is easy to the square groove of the mechanism with other and is matched and then transmit power.
Claims (6)
1. noiselessness ratchet mechanism, including frame, ratchet, ratchet and actuating unit, it is characterized in that, also include crank, slide block, rocker, fork and pin, described actuating unit connecting crank, the hinged slide block of free end of described crank, described rocker has chute, described slide block is positioned in chute and is connected with slide, the rotating shaft of frame it is rotationally connected with in the middle part of described rocker, described pawl wheel is connected to the rotating shaft of frame, one end of described fork is rotationally connected with rotating shaft, described pawl rotation is connected to the other end of fork, described ratchet one end coordinates with ratchet, the other end of described ratchet is positioned between two pins, described pin is fixedly connected on wobble plate.
Noiselessness ratchet mechanism the most according to claim 1, it is characterised in that: described ratchet has hollow hole.
Noiselessness ratchet mechanism the most according to claim 2, it is characterised in that: described slide block has side shield.
Noiselessness ratchet mechanism the most according to claim 3, it is characterised in that: it is coated with wearing layer in described chute.
Noiselessness ratchet mechanism the most according to claim 4, it is characterised in that: it is coated with cushion on described pin.
Noiselessness ratchet mechanism the most according to claim 5, it is characterised in that: the output shaft side of the being bar axle of described ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484476.6A CN105927721A (en) | 2016-06-28 | 2016-06-28 | Noiseless ratchet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610484476.6A CN105927721A (en) | 2016-06-28 | 2016-06-28 | Noiseless ratchet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105927721A true CN105927721A (en) | 2016-09-07 |
Family
ID=56829440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610484476.6A Pending CN105927721A (en) | 2016-06-28 | 2016-06-28 | Noiseless ratchet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927721A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502519A (en) * | 2018-03-29 | 2018-09-07 | 重庆睿豪科技发展有限公司 | Work handling device |
| CN109514007A (en) * | 2018-12-20 | 2019-03-26 | 象山谢海家具有限公司 | A kind of hardware gear grinding device |
| CN115388140A (en) * | 2022-09-13 | 2022-11-25 | 天津第一机床有限公司 | Ratchet and pawl feeding mechanism with accurate tooth shifting structure |
-
2016
- 2016-06-28 CN CN201610484476.6A patent/CN105927721A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502519A (en) * | 2018-03-29 | 2018-09-07 | 重庆睿豪科技发展有限公司 | Work handling device |
| CN109514007A (en) * | 2018-12-20 | 2019-03-26 | 象山谢海家具有限公司 | A kind of hardware gear grinding device |
| CN115388140A (en) * | 2022-09-13 | 2022-11-25 | 天津第一机床有限公司 | Ratchet and pawl feeding mechanism with accurate tooth shifting structure |
| CN115388140B (en) * | 2022-09-13 | 2023-05-09 | 天津第一机床有限公司 | Ratchet pawl feeding mechanism with accurate tooth shifting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160907 |
|
| WD01 | Invention patent application deemed withdrawn after publication |