CN204533418U - A kind of bi-directional braking ratchet mechanism - Google Patents
A kind of bi-directional braking ratchet mechanism Download PDFInfo
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- CN204533418U CN204533418U CN201520191108.3U CN201520191108U CN204533418U CN 204533418 U CN204533418 U CN 204533418U CN 201520191108 U CN201520191108 U CN 201520191108U CN 204533418 U CN204533418 U CN 204533418U
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- chock
- block
- drive sleeve
- tooth block
- internal clickwork
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Abstract
The utility model provides a kind of bi-directional braking ratchet mechanism, belongs to ratchet technical field; It solving existing ratchet can only one-way brake and the poor technical problem of braking effect; A kind of bi-directional braking ratchet mechanism, comprises rotating shaft, rotating shaft is provided with the internal clickwork of one-way rotation, internal clickwork has multiple tooth block; Drive sleeve, it is sheathed in rotating shaft, and drive sleeve is connected with pushing block, and pushing block one end is against on tooth block, can promote internal clickwork and rotate when drive sleeve rotates forward; Forward chock, it is adjacent with internal clickwork, and described tooth block is with when forward chock contacts, and internal clickwork stops operating, and drive sleeve rotates backward and can promote forward chock motion, and when forward chock separating tooth block, internal clickwork can be rotated further; Stopping device realizes internal clickwork bi-directional braking at internal clickwork standstill state, has both prevented internal clickwork generation bow tie, and prevent internal clickwork from rotating excessively, its braking effect is better simultaneously.
Description
Technical field
The utility model belongs to ratchet technical field, relates to a kind of ratchet mechanism, especially a kind of bi-directional braking ratchet mechanism.
Background technique
Ratchet mechanism is a kind of common driving mechanism, and it formed primarily of rocking bar, ratchet and outer ratchet.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, and make ratchet turn over several angle, when rocking bar makes continuous print reciprocally swinging, ratchet just obtains unidirectional intermittent rotary simultaneously.
This internal clickwork has unidirectional braking effect, and prevent ratchet from transmission process, occurring pivotal phenomenon, meanwhile, also there is following technical problem in this ratchet mechanism, and this ratchet mechanism can only one-way brake, namely can only after pawl wheel, prevent internal clickwork from turning round, but ratchet cannot realize braking in its sense of rotation, and ratchet easily rotates excessively, the equipment that particularly some transmission accuracies are higher, traditional ratchet is used then to there will be braking not comprehensive, the problem that braking effect is poor.
In sum, in order to solve the technical problem that above-mentioned ratchet mechanism exists, need a kind of energy of design bi-directional braking, the good bistable state ratchet mechanism of braking effect.
Model utility content
The purpose of this utility model is the problems referred to above existed for prior art, proposes a kind of energy bi-directional braking, the good bistable state ratchet mechanism of braking effect.
The purpose of this utility model realizes by following technical proposal: a kind of bi-directional braking ratchet mechanism, comprises
Rotating shaft, rotating shaft is provided with the internal clickwork of one-way rotation, internal clickwork has multiple tooth block;
Drive sleeve, it is sheathed in rotating shaft, and drive sleeve is connected with pushing block, and pushing block one end is against on tooth block, can promote internal clickwork and rotate when drive sleeve rotates forward;
Forward chock, it is adjacent with internal clickwork, and described tooth block is with when forward chock contacts, and internal clickwork stops operating;
Described drive sleeve rotates backward and can promote forward chock motion, and when forward chock separating tooth block, internal clickwork can be rotated further.
In above-mentioned a kind of bi-directional braking ratchet mechanism, drive sleeve is provided with jacking block, and described pushing block and jacking block are articulated and connected, and described jacking block rotates with drive sleeve and forward chock can be backed down and internal clickwork is rotated further.
In above-mentioned a kind of bi-directional braking ratchet mechanism, also include scaffold and rotating shaft runs through scaffold, described forward chock and scaffold are articulated and connected.
In above-mentioned a kind of bi-directional braking ratchet mechanism, one end adjacent with jacking block at forward chock is provided with inclined-plane, when tooth block is positioned at limiting area, jacking block rotates with drive sleeve and is against on inclined-plane, and reverse chock backs down and makes tooth block depart from the restriction of forward chock by jacking block.
In above-mentioned a kind of bi-directional braking ratchet mechanism, scaffold is also hinged with the reverse chock adjacent with forward chock, limiting area is formed between described forward chock and reverse chock, described reverse chock rotates and tooth block can be made to enter limiting area, and described forward chock rotates and makes tooth block leave limiting area.
In above-mentioned a kind of bi-directional braking ratchet mechanism, the width of described tooth block to be increased gradually to gear ring madial wall by tooth block madial wall and is formed with the first inclined-plane in tooth block both sides, and described pushing block is against on the first inclined-plane.
In above-mentioned a kind of bi-directional braking ratchet mechanism, described rotating shaft is also arranged with gear, gear is provided with the tooth bar with gears meshing, described gear is connected with drive sleeve and can with drive sleeve synchronous axial system.
In above-mentioned a kind of bi-directional braking ratchet mechanism, also include frame, scaffold is arranged in frame and rotating shaft runs through scaffold and frame, and frame is provided with driving cylinder, and tooth bar one end is connected with driving cylinder.
In above-mentioned a kind of bi-directional braking ratchet mechanism, described frame is also provided with the extension spring be connected with frame, the tooth bar the other end is connected with extension spring.
Compared with prior art, the utility model has following beneficial effect:
In the utility model, internal clickwork is fixed and is realized internal clickwork and braking with counterclockwise two sense of rotation clockwise simultaneously by stopping device under the standstill state of internal clickwork intermittent rotary, both there is bow tie after having prevented internal clickwork normal rotation, prevent internal clickwork from rotating excessively simultaneously, its braking effect is better, use safety and have more protection.
Accompanying drawing explanation
Fig. 1 is the three-dimensional mounting structure schematic diagram of the utility model one preferred embodiment.
Fig. 2 is the stereogram of the utility model one preferred embodiment.
Fig. 3 is the stereogram of the utility model one preferred embodiment.
Fig. 4 is the planimetric map of the utility model under bi-directional braking state.
Fig. 5 is the planimetric map of the utility model under one-way brake state.
Fig. 6 is the stereogram of the utility model one preferred embodiment middle gear.
In figure, 1, frame; 10; Fixing column; 100, rotating shaft; 110, internal clickwork; 111, fixed plate; 112, gear ring; 113, tooth block; 113a, the first inclined-plane; 120, bearing; 130, drive sleeve; 131, jacking block; 132, pushing block; 140, gear; 141, sleeve 141; 142, back-up ring 142; 150, tooth bar; 200, scaffold; 210, fixed base; 220, mounting plate; 230, connecting plate; 231, stationary axle; 240, forward chock; 241, the second inclined-plane; 250, reverse chock; 300, cylinder is driven; 310, piston rod; 320, extension spring.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
For the ease of understanding, the arrow direction indication in Fig. 4, Fig. 5 represents the sense of rotation of internal clickwork 110, and it is for forward to rotate.
As shown in Figure 1, a kind of bistable state ratchet mechanism of the utility model, be installed in frame 1, comprise rotating shaft 100 and internal clickwork 110, frame 1 is also provided with the feedway be connected with rotating shaft, for conveying workpieces, the two ends of rotating shaft 100 are connected with frame 1 respectively, rotating shaft 100 one end is run through frame 1 and is stretched out outside frame and is formed with transmission unit, internal clickwork 110 is installed on this transmission unit, as shown in Figure 2, described internal clickwork 110 comprises the fixed plate 111 be connected with rotating shaft 100 and the gear ring 112 be arranged on fixed plate 111, gear ring madial wall is evenly provided with six tooth blocks 113.
As shown in Figures 1 to 5, transmission unit is overlapped the intrinsic bearing 120 be positioned at outside internal clickwork 110, bearing 120 is provided with drive sleeve 130, this drive sleeve 130 is positioned at gear ring 112 and is in same plane with gear ring 112, by bearing 120, drive sleeve 130 can be rotated relative to transmission unit, the outer surface of drive sleeve 130 is also provided with jacking block 131, this jacking block 131 extends in fan shape on drive sleeve 130 outer surface, jacking block 131 is also provided with the pushing block 132 that rear end and jacking block 131 are articulated and connected, the front end of pushing block 132 is against on the side of any tooth block 113, this pushing block 132 is all in same plane with drive sleeve 130 and jacking block 131, this pushing block 132 rotates with drive sleeve 130 and can promote any tooth block 113 and make internal clickwork 110 reverse rotation, rotating shaft 100 is with internal clickwork 110 synchronous axial system and make feedway work, realize the transmission of workpiece, pushing block 132 is after the last tooth block 113 of promotion rotates, forward turn to next tooth block 113 place with drive sleeve 130 and be against and next tooth block 113 promotes this tooth block 113 again rotate, by drive sleeve 130 reciprocating rotation in rotating shaft 100, pushing block 132 intermittence promotes tooth block 113 successively and makes rotating shaft 100 with drive sleeve 130 synchronous axial system, realize the intermittent rotating in same direction of rotating shaft 100, workpiece is made can be ceaselessly transferred device transmission, this internal clickwork mechanism is not limited to be used in transportation art, except for except conveying workpieces, also can be used for lifting field or other field.
What be worth one is, drive sleeve 130 is relative with the motion of internal clickwork 110, internal clickwork 110 is geo-stationary, its rotation is passive, and drive sleeve 130 is rotate relative to internal clickwork 110, it rotates is initiatively, drive sleeve 130 drives internal clickwork 110 to rotate, thus realize rotating shaft 100 and rotate, in the present embodiment, also drive sleeve 130 geo-stationary can be made, drive sleeve 130 and rotating shaft 100 are connected, internal clickwork 110 rotates relative to drive sleeve 130, internal clickwork 110 drives drive sleeve 130 to rotate, can realize rotating shaft 100 and rotate equally, therefore, the rotation of the present embodiment rotating shaft 100 is not limited to above-mentioned implementation.
As improvement of the present utility model, as shown in Figures 2 to 4, the width of described tooth block 113 to be increased gradually to gear ring 112 madial wall by tooth block 113 madial wall and is formed with the first inclined-plane 113a in tooth block 113 both sides, described pushing block 132 is against 113a on the first inclined-plane, this first inclined-plane 113a makes one end of pushing block 132 and jacking block 131 roughly in vertical state, so, the thrust of pushing block 132 is made to remain on the most stable state, internal clickwork 110 with drive sleeve 130 rotate most effective, simultaneously, first inclined-plane 113a contacts with pushing block 132 is convenient, make pushing block 132 faster, more easily be against on tooth block 113.
Further, resetting means is provided with between pushing block 132 front end and drive sleeve 130, preferably, this resetting means is torsion spring (not shown), certainly, also can be connected with pushing block 132 and promotion cylinder that pushing block 132 rotates or other structure can be promoted, pass through torsion spring, pushing block 132 is after being separated with last tooth block 113, can contact with next tooth block 113 at once and be against on next tooth block 113, thus ensure that pushing block 132 contacts with each tooth block 113, ensure that pushing block 132 promotes each tooth block 113, thus the intermittence realizing rotating shaft 100 is rotated.
As shown in Figure 1 and Figure 2, the outer side wall of frame 1 is also provided with scaffold 200, these scaffold 200 both sides have two fixed bases 210 and fixed base 210 and frame 1 outer side wall are connected, there is in the middle part of scaffold 200 mounting plate 220 and rotating shaft 100 runs through mounting plate 220, by this scaffold 200, rotating shaft 100 transverse shifting in frame 1 can be prevented.
Two connecting plates separated 230 are provided with in the lower end of scaffold 200, two connecting plates 230 are separately installed with stationary axle 231, two stationary axle are separately installed with forward chock 240 and reverse chock 250, forward chock 240 is positioned in the forward sense of rotation of internal clickwork 110, reverse chock 250 is positioned on the reverse rotation direction of internal clickwork 110, forward chock 240 is in the same plane with reverse chock 250, forward the head end of chock 240 and the head end spaced opposite of reverse chock 250 are formed with limiting area, first tooth block 113 of internal clickwork 110 is positioned at this limiting area, after internal clickwork reverse rotation, reverse chock 250 prevents the reverse revolution of tooth block 111, forward chock 240 prevents internal clickwork from continuing forward to rotate, internal clickwork 110 is made to realize bi-directional braking.
As shown in Figures 2 to 4, rear end and the stationary axle 231 of reverse chock 250 are hinged, forward hinged with stationary axle 231 in the middle part of chock 240, at forward chock 240, the hinged place of reverse chock 250 is respectively arranged with torsion spring (not shown), reverse chock 250 is under the effect of any tooth block 113, can rotate up and down for the center of circle with stationary axle 231, after reverse chock 250 is pushed open by any tooth block 113, enter in limiting area, reverse chock 250 returns back to initial position under torsion spring effect, internal clickwork 110 is by bi-directional braking, forward chock 240 can rotate up and down for the center of circle with stationary axle 231 under the effect of jacking block 131, jacking block 131 rotates clockwise with drive sleeve 130 and incites somebody to action forward chock 240 and backs down, the tooth block 113 being positioned at limiting area departs from the restriction of forward chock 240, under the transmission of drive sleeve 130, internal clickwork 110 can be rotated further, pushing block 132 often promotes a tooth block 113, the last tooth block 113 be positioned at counterclockwise just enters limiting area and is limited, therefore, in internal clickwork 110 intermittent rotary process, when internal clickwork 110 seizes up state, internal clickwork 110 is just by bi-directional braking, the bi-directional braking of internal clickwork 110, make internal clickwork 110 both cannot continue to rotate counterclockwise, also cannot turn round, its braking effect is better, more stable when making feedway conveying workpieces, safety, transfer efficiency is higher, herein, forward the width of chock 240 is greater than the width of forward chock 240, be convenient to forward chock 240 contact with jacking block 131.
It is worth mentioning that, the both sides of tooth block 113 are the first inclined-plane 113a, forward chock 240 can conveniently contact with tooth block 113 with reverse chock 250, reach the effect of bi-directional braking, also can be separated with tooth block 113 easily, because internal clickwork 110 is intermittent rotations, if the two side of tooth block 113 is vertical surface but not inclined-plane, then tooth block 113 can be adjacent to forward chock 240 and cause forward chock 240 to be separated with tooth block 113 fast, affects the rotating effect of internal clickwork 110.
As improvement, one end that forward chock 240 is adjacent with jacking block 131 is provided with the second inclined-plane 241, when tooth block 113 is positioned at limiting area, jacking block 131 rotates with drive sleeve 130 and is against on the second inclined-plane 241, by this second inclined-plane 241, jacking block 131 can push forward chock 240 easily, forward chock 240 is rotated with stationary axle 231, forward chock 240 makes tooth block 113 depart from the restriction of forward chock 240 by jacking block 131 after backing down, internal clickwork 110 can continue to rotate counterclockwise with drive sleeve 130, and the intermittence realizing rotating shaft 100 is rotated.
As shown in Figure 1 to Figure 3, rotating shaft 100 is also arranged with gear 140, as shown in Figure 6, an end face of this gear 140 is fixed with the sleeve 141 coaxial with gear 140, sleeve 141 is fixed on bearing 120, drive sleeve 130 is enclosed within sleeve 141 outer surface, drive sleeve 130, with gear 140 synchronous axial system, gear 140 is provided with the tooth bar 150 be connected with a joggle with it, by tooth bar 150 and gear 140 gear motion, realize drive sleeve 130 with gear 140 synchronous axial system, and then realize axis of rotation.
As improvement, be provided with back-up ring 142 between sleeve 141 and gear 140, back-up ring 142 adds the area of contact between gear 140 and drive sleeve 130, adds the frictional force between the two, prevents gear 140 and drive sleeve 130 from relatively rotating further.
As shown in Figure 1 and Figure 2, as power source, arrange to be vertically installed with above frame 1 and drive cylinder 300, the rear end of cylinder 300 is driven to be connected by fixing column 10 and frame 1, drive the piston rod 310 of cylinder 300 to be connected with tooth bar 150 and drive tooth bar 150 and gear 140 to make gear motion, drive sleeve 130 with gear 140 synchronous axial system and the intermittent internal clickwork 110 that promotes rotate, thus realize rotating shaft 100 and rotate, certainly, tooth bar 150 and gear 140 gear motion also realize by other driving mode, such as, motor drives, or hydraulic driving etc.
As further improvement, frame 1 is also provided with extension spring 320, one end of extension spring 320 is connected with frame 1 by fixing column 10, extension spring 320 the other end is connected with the other end of tooth bar 150, by extension spring 320, the other end of tooth bar 150 is held, tooth bar 150 is made to coordinate tightr with gear 140, engagement property is better, tooth bar 150 is avoided to be separated with gear 140, herein except employing extension spring 320, another also can be adopted to drive cylinder, cylinder is driven to be connected with the two ends of tooth bar 150 respectively by two, two drive cylinder alternately to stretch just can realize tooth bar 150 and gear 140 gear motion, but adopt extension spring 320 to replace cylinder herein, save cost, reduce energy consumption simultaneously, preferably, this extension spring 320 is parallel with driving cylinder 300 and be located on the side of gear 140, so, tooth bar 150 engages apart from the longest with gear 140, make tooth bar 150 and gear 140 to engage effect best, engage the most stable, make the transmission effect of gear 140 best.
The utility model in an initial condition, as shown in Figure 4, forward chock 240 is in the same plane with reverse chock 250, wherein a tooth block 113 is positioned at limiting area, at forward chock 240 with under the restriction of reverse chock 250, internal clickwork 110 cannot clockwise or rotate counterclockwise, and namely internal clickwork 110 is bidirectionally limited, and pushing block 132 is between two tooth blocks 113 and contact with tooth block 113.
As shown in Figure 5, cylinder 300 actuation gear 140 is driven to rotate clockwise, drive sleeve 130 is with gear 140 synchronous axial system, internal clickwork 110 seizes up state, pushing block 132 is against on tooth block 113 under torsion spring effect, meanwhile, jacking block 131 and forward chock 240 contact and incite somebody to action forward chock 240 and back down downwards.
Cylinder 300 is driven to drive drive sleeve 130 to rotate counterclockwise, pushing block 132 promotes tooth block 113 and moves and internal clickwork 110 is rotated, the tooth block 113 being positioned at limiting area rotates with internal clickwork 110 and is shifted out by limiting area, in internal clickwork 110 rotation process, jacking block 131 is separated with forward chock 240, and forward chock 240 back rotation is to initial position, simultaneously, a rear tooth block 113 rotates with internal clickwork 110 and enters in limiting area, and internal clickwork 110 is again bidirectionally limited.
Cylinder 300 is driven constantly to drive drive sleeve 130 to-and-fro motion, pushing block 132 promotes each tooth block 113 and moves and realize the intermittent rotary of internal clickwork 110, thus realize the intermittent rotary of rotating shaft 100, in internal clickwork 110 pause process, forward chock 240 and reverse chock 250 make internal clickwork 110 bidirectionally limited, ensure the stability and security of internal clickwork 110 intermittent rotary.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (9)
1. a bi-directional braking ratchet mechanism, is characterized in that: comprise
Rotating shaft, rotating shaft is provided with the internal clickwork of one-way rotation, internal clickwork has multiple tooth block;
Drive sleeve, it is sheathed in rotating shaft, and drive sleeve is connected with pushing block, and pushing block one end is against on tooth block, can promote pawl wheel when drive sleeve rotates forward;
Forward chock, it is adjacent with ratchet, and described tooth block is with when forward chock contacts, and ratchet stops operating;
Described drive sleeve rotates backward and can promote forward chock motion, and when forward chock separating tooth block, ratchet can be rotated further.
2. a kind of bi-directional braking ratchet mechanism according to claim 1, it is characterized in that: in drive sleeve, be provided with jacking block, described pushing block and jacking block are articulated and connected, and described jacking block rotates with drive sleeve and forward chock can be backed down and ratchet is rotated further.
3. a kind of bi-directional braking ratchet mechanism according to claim 1 and 2, is characterized in that: also include scaffold and rotating shaft runs through scaffold, and described forward chock and scaffold are articulated and connected.
4. a kind of bi-directional braking ratchet mechanism according to claim 2, it is characterized in that: one end adjacent with jacking block at forward chock is provided with inclined-plane, when tooth block is positioned at limiting area, jacking block rotates with drive sleeve and is against on inclined-plane, and reverse chock backs down and makes tooth block depart from the restriction of forward chock by jacking block.
5. a kind of bi-directional braking ratchet mechanism according to claim 3, it is characterized in that: on scaffold, be also hinged with the reverse chock adjacent with forward chock, limiting area is formed between described forward chock and reverse chock, described reverse chock rotates and tooth block can be made to enter limiting area, and described forward chock rotates and makes tooth block leave limiting area.
6. a kind of bi-directional braking ratchet mechanism according to claim 1, is characterized in that: the width of described tooth block to be increased gradually to gear ring madial wall by tooth block madial wall and is formed with the first inclined-plane in tooth block both sides, and described pushing block is against on the first inclined-plane.
7. a kind of bi-directional braking ratchet mechanism according to claim 1, is characterized in that: described rotating shaft is also arranged with gear, and gear is provided with the tooth bar with gears meshing, and described gear is connected with drive sleeve and can with drive sleeve synchronous axial system.
8. a kind of bi-directional braking ratchet mechanism according to claim 7, is characterized in that: also include frame, and scaffold is arranged in frame and rotating shaft runs through scaffold and frame, and frame is provided with driving cylinder, and tooth bar one end is connected with driving cylinder.
9. a kind of bi-directional braking ratchet mechanism according to claim 8, it is characterized in that: described frame is also provided with the extension spring be connected with frame, the tooth bar the other end is connected with extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191108.3U CN204533418U (en) | 2015-03-31 | 2015-03-31 | A kind of bi-directional braking ratchet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191108.3U CN204533418U (en) | 2015-03-31 | 2015-03-31 | A kind of bi-directional braking ratchet mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN204533418U true CN204533418U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191108.3U Expired - Fee Related CN204533418U (en) | 2015-03-31 | 2015-03-31 | A kind of bi-directional braking ratchet mechanism |
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| CN (1) | CN204533418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763788A (en) * | 2015-03-31 | 2015-07-08 | 宁波宫铁精机有限公司 | Bidirectional brake ratchet mechanism |
| CN114458743A (en) * | 2022-01-27 | 2022-05-10 | 陕西理工大学 | Vehicle-mounted intermittent moving device |
-
2015
- 2015-03-31 CN CN201520191108.3U patent/CN204533418U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763788A (en) * | 2015-03-31 | 2015-07-08 | 宁波宫铁精机有限公司 | Bidirectional brake ratchet mechanism |
| CN114458743A (en) * | 2022-01-27 | 2022-05-10 | 陕西理工大学 | Vehicle-mounted intermittent moving device |
| CN114458743B (en) * | 2022-01-27 | 2023-06-27 | 陕西理工大学 | Vehicle-mounted intermittent movement device |
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| 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: 20150805 Termination date: 20170331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |