CN204312644U - Ratchet intermittent transmission device - Google Patents
Ratchet intermittent transmission device Download PDFInfo
- Publication number
- CN204312644U CN204312644U CN201420753203.3U CN201420753203U CN204312644U CN 204312644 U CN204312644 U CN 204312644U CN 201420753203 U CN201420753203 U CN 201420753203U CN 204312644 U CN204312644 U CN 204312644U
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- CN
- China
- Prior art keywords
- ratchet
- controlling rod
- frame
- cam
- pawl
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of ratchet intermittent transmission device, comprise frame and ratchet, pawl wheel is connected in frame, also comprise and be hinged on controlling rod in frame and cam, one end face of cam is circumferentially provided with driving ring, the middle part of controlling rod is hinged in frame, one end and the cam of controlling rod offset, the other end of controlling rod is provided with two poles, angle between two poles is greater than the angle that on ratchet, a ratchet is corresponding, wherein, the friction plate that pole being provided with can contact with driving ring, another pole is provided with stop pawl.The utility model friction plate is used for driving pawl motion, and stop pawl is used for brake ratchet.Friction plate and the driving ring on ratchet are that face contacts, and relative to the point cantact of ratchet, its wearing and tearing are less; Stop pawl not be used in back rotation on ratchet, and the wearing and tearing of stop pawl are also less, therefore does not need more renewal of facing renewal and stop pawl continually, makes entirety have the longer operating time.
Description
Technical field
The utility model belongs to the technical field of ratchet intermittent transmission device.
Background technique
A kind of one-way intermittent motion mechanism that ratchet mechanism is made up of ratchet and pawl.It formed primarily of rocking bar, ratchet (pawl) and outer ratchet (externalratchet).Rocking bar is motion input link, and ratchet is movement output component.When rocking bar clockwise oscillation, the ratchet be hinged on bar inserts in the tooth of ratchet, makes ratchet turn over several angle simultaneously.When rocking bar counter-clockwise swing, ratchet slips on the tooth of ratchet, ratchet transfixion.Like this, when rocking bar makes continuous print reciprocally swinging, ratchet just obtains unidirectional intermittent rotary.
Existing ratchet unit is all swing by a ratchet intermittently-driving realizing ratchet, and ratchet should promote pawl wheel, offsets again with ratchet.Adopt such structure easily to cause the wearing and tearing of ratchet comparatively large, need to change ratchet comparatively continually, the continuity of meeting destruction work.
Model utility content
The utility model provides a kind of ratchet intermittent transmission device, to wear and tear problem faster to solve ratchet in existing ratchet mechanism.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: a kind of ratchet intermittent transmission device, comprise frame and ratchet, pawl wheel is connected in frame, also comprise and be hinged on controlling rod in frame and cam, one end face of cam is circumferentially provided with driving ring, the middle part of controlling rod is hinged in frame, one end and the cam of controlling rod offset, the other end of controlling rod is provided with two poles, angle between two poles is greater than the angle that on ratchet, a ratchet is corresponding, wherein, the friction plate that one pole being provided with can contact with driving ring, another pole is provided with stop pawl.
Principle of the present utility model is: actuated by cams controlling rod swings, and pole is connected on controlling rod, and controlling rod can drive pole to rotate.When pole is rotated towards the direction away from friction plate, stop pawl can away from ratchet, and friction plate can promote the driving ring on ratchet, makes ratchet and driving ring rotating in same direction.When pole is rotated towards the direction of friction plate, friction plate can away from the driving ring on ratchet, and stop pawl can offset with ratchet, and ratchet can stop motion, thus realizes the unidirectional movement of ratchet.
Compared with prior art, the utility model has the advantage of: friction plate is used for driving pawl motion, and stop pawl is used for brake ratchet.Friction plate and the driving ring on ratchet are that face contacts, and relative to the point cantact of ratchet, its wearing and tearing are less; Stop pawl not be used in back rotation on ratchet, and the wearing and tearing of stop pawl are also less, therefore does not need more renewal of facing renewal and stop pawl continually, makes entirety have the longer operating time.
Further, also comprise spring, one end of spring is connected with frame, and the other end is connected with controlling rod, makes controlling rod and cam be in the state pushed against all the time.
Further, one end that controlling rod and cam offset is provided with roller, and the friction between cam and controlling rod is sliding friction, and resistance is between the two less.
Further, one end that described stop pawl contacts with ratchet is provided with ball, when ball is with when on ratchet, the straightway of ratchet contacts, ball can slide, when ball is with when on ratchet, the corner of ratchet contacts, ball can be stuck in pit, can not move, prevent from extruding tooth top on ratchet, thus destroy the ratchet on ratchet.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the structural representation of the utility model ratchet intermittent transmission device embodiment.
Embodiment
Reference character in Figure of description comprises: frame 1, ratchet 2, stage clip 3, controlling rod 4, cam 5, pole 6, driving ring 7, friction plate 8, stop pawl 9.
As shown in Figure 1, a kind of ratchet intermittent transmission device in the present embodiment, comprise frame 1, ratchet 2, stage clip 3, be hinged on controlling rod 4 in frame 1 and cam 5, ratchet 2 is rotatably connected in frame 1.One end face of cam 5 is circumferentially provided with driving ring 7, driving ring 7 is positioned at ratchet 2 tip diameter 1/2nd place, and the middle part of controlling rod 4 is hinged in frame 1, and right-hand member and the cam 5 of controlling rod 4 offset, the right-hand member of controlling rod 4 is provided with roller, and the left end of controlling rod 4 is provided with lower fulcrum bar 6 on two.Angle between two poles 6 is greater than the angle that on ratchet 2, a ratchet is corresponding, and wherein, lower fulcrum bar 6 is provided with the friction plate 8 that can contact with driving ring 7, and upper rack posts 6 is provided with stop pawl 9, and one end that stop pawl 9 contacts with ratchet 2 is provided with ball.The lower end of stage clip 3 is connected with frame 1, and upper end is connected on lower fulcrum bar 6.
Cam 5 circumference can rotate in frame 1, thus drived control bar 4 swings, and pole 6 is connected on controlling rod 4, and controlling rod 4 also can drive pole 6 to rotate.When cam 5 wire diameter smaller part offsets in the right-hand member of controlling rod 4, pole 6 can upwards be lifted, and stop pawl 9 can away from ratchet 2, and friction plate 8 can promote the driving ring 7 on ratchet 2, and ratchet 2 and driving ring 7 are rotated counterclockwise.When cam 5 wire diameter larger part offsets in the right-hand member of controlling rod 4, pole 6 can to decline, and friction plate 8 can away from the driving ring 7 on ratchet 2, and stop pawl 9 can offset with ratchet 2, and ratchet 2 can stop motion.Pole 6 move back and forth the unidirectional intermittent movement realizing ratchet 2.
The setting of stage clip 3 makes controlling rod 4 and cam 5 be in the state pushed against all the time.One end that controlling rod 4 and cam 5 offset is provided with roller, and the friction between cam 5 and controlling rod 4 is sliding friction, and resistance is between the two less.One end that described stop pawl 9 contacts with ratchet 2 is provided with ball, when ball is with when on ratchet 2, the straightway of ratchet contacts, ball can slide, when ball is with when on ratchet 2, the corner of ratchet contacts, ball can be stuck in pit, can not move, prevent from extruding tooth top on ratchet, thus destroy the ratchet on ratchet 2.
Embodiment 2
The difference of the present embodiment and embodiment 1 is: change stage clip into extension spring, and one end of extension spring is still connected with frame 1, but the other end is connected to the position of controlling rod 4 near right-hand member, and object is also to make controlling rod 4 and cam 5 be in the state pushed against all the time.
For a person skilled in the art; under the prerequisite not departing from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (4)
1. a ratchet intermittent transmission device, comprise frame and ratchet, pawl wheel is connected in frame, it is characterized in that: also comprise and be hinged on controlling rod in frame and cam, one end face of cam is circumferentially provided with driving ring, the middle part of controlling rod is hinged in frame, one end and the cam of controlling rod offset, the other end of controlling rod is provided with two poles, angle between two poles is greater than the angle that on ratchet, a ratchet is corresponding, wherein, the friction plate that pole being provided with can contact with driving ring, another pole is provided with stop pawl.
2. ratchet intermittent transmission device as claimed in claim 1, it is characterized in that: also comprise spring, one end of spring is connected with frame, and the other end is connected with controlling rod.
3. ratchet intermittent transmission device as claimed in claim 1, is characterized in that: one end that controlling rod and cam offset is provided with roller.
4. ratchet intermittent transmission device as claimed in claim 1, is characterized in that: one end that described stop pawl contacts with ratchet is provided with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753203.3U CN204312644U (en) | 2014-12-03 | 2014-12-03 | Ratchet intermittent transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753203.3U CN204312644U (en) | 2014-12-03 | 2014-12-03 | Ratchet intermittent transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312644U true CN204312644U (en) | 2015-05-06 |
Family
ID=53134962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420753203.3U Expired - Fee Related CN204312644U (en) | 2014-12-03 | 2014-12-03 | Ratchet intermittent transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312644U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534042A (en) * | 2014-12-03 | 2015-04-22 | 重庆市合川区均恒金属加工厂 | Intermittent drive device for ratchet wheel |
| CN107606091A (en) * | 2017-08-02 | 2018-01-19 | 湖南农业大学 | A kind of batch (-type) drive mechanism |
| CN108580928A (en) * | 2018-04-28 | 2018-09-28 | 重庆润跃机械有限公司 | Truning fixture for gear |
-
2014
- 2014-12-03 CN CN201420753203.3U patent/CN204312644U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534042A (en) * | 2014-12-03 | 2015-04-22 | 重庆市合川区均恒金属加工厂 | Intermittent drive device for ratchet wheel |
| CN107606091A (en) * | 2017-08-02 | 2018-01-19 | 湖南农业大学 | A kind of batch (-type) drive mechanism |
| CN108580928A (en) * | 2018-04-28 | 2018-09-28 | 重庆润跃机械有限公司 | Truning fixture for gear |
| CN108580928B (en) * | 2018-04-28 | 2020-03-10 | 重庆润跃机械有限公司 | Turning device for gear |
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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 |
Granted publication date: 20150506 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |