CN202251390U - Crank length adjusting device - Google Patents
Crank length adjusting device Download PDFInfo
- Publication number
- CN202251390U CN202251390U CN201120390150XU CN201120390150U CN202251390U CN 202251390 U CN202251390 U CN 202251390U CN 201120390150X U CN201120390150X U CN 201120390150XU CN 201120390150 U CN201120390150 U CN 201120390150U CN 202251390 U CN202251390 U CN 202251390U
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- China
- Prior art keywords
- crank
- bearing
- screw rod
- adjusting screw
- crank pin
- 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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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a crank length adjusting device, comprising a crank disk, wherein a supporting shaft is arranged at the bottom of the crank disk; a sliding groove extending along a radial direction is arranged at the middle part of the crank disk; and a crank pin is slidably arranged in the sliding groove. The crank pin is controlled to slide along the extending direction of the sliding groove by rotating an adjusting screw rod in the user process, so as to adjust a relative position between the crank pin and the sliding groove and a relative position between the crank pin and the adjusting screw rod until a center distance between the crank pin and the crank disc is equal to the demanded length of the crank. The whole operation process is continuous and easy to control, the infinitely variable control of the length of the crank is realized, the adaptability of the entire working condition of a crank rocker mechanism is greatly improved, and the application range is correspondingly expanded.
Description
Technical field
The utility model relates to the gearing technical field, particularly a kind of crank length adjustment device.
Background technique
In the machining industry; Crankrocker mechanism is widely used in all kinds of machinery as a kind of common mechanical transmission mechanism; And along with the improving constantly and the continuous variation of work condition environment of production intensity, people have higher requirement to the usability of crankrocker mechanism.
Present existing crankrocker mechanism; Fit dimension and relative position thereof between its each crank, connecting rod and rocking bar are comparatively fixing; Though this crankrocker mechanism can satisfy basic machinery production processing needs; But because its size is comparatively fixing, can't adapt to frequent working conditions change and different production demand, cause adverse effect for working continuously of machinery.
Therefore, how a kind of device being provided, is the important technological problems that those skilled in the art need solve at present with the step-less adjustment that realizes crank length.
The model utility content
The purpose of the utility model provides a kind of crank length adjustment device, and this crank length adjustment device can be realized the step-less adjustment of crank length.
For solving the problems of the technologies described above; The utility model provides a kind of crank length adjustment device, comprises crank disc, and the bottom of said crank disc has supporting axle; The middle part of said crank disc has the chute that radially extends along it, has been mounted slidably crank pin in the said chute;
The two ends of said chute are fixed with first bearing and second bearing respectively; The inside of said chute also is provided with the adjusting screw rod that runs through said crank pin; The bearing of trend of said adjusting screw rod and the bearing of trend of said chute are consistent; Screw-thread fit between said adjusting screw rod and said crank pin, and the two ends of said adjusting screw rod are run through respectively and are stretched out in said first bearing and said second bearing.
Preferably, the two ends of the fitting surface of said crank pin and said adjusting screw rod are respectively arranged with the assembly cap.
Preferably, be provided with voussoir between the fitting surface between said crank pin and said chute.
Preferably, be penetrated with bolt on the said voussoir, and said voussoir concrete through said bolt on said crank pin.
Preferably, said voussoir is specially two, and lays respectively at the both sides of said crank pin.
Preferably, the cross section of two external parts of said adjusting screw rod is specially square.
Preferably, be respectively arranged with the tapered roller bearing that matches with said adjusting screw rod on said first bearing and said second bearing.
Preferably, be respectively arranged with and the suitable bearing (ball) cover of said tapered roller bearing on said first bearing and said second bearing.
Above-mentioned background is technological relatively; The crank length adjustment device that the utility model provided comprises crank disc, and the bottom of said crank disc has supporting axle; The middle part of said crank disc has the chute that radially extends along it, has been mounted slidably crank pin in the said chute; The two ends of said chute are fixed with first bearing and second bearing respectively; The inside of said chute also is provided with the adjusting screw rod that runs through said crank pin; The bearing of trend of said adjusting screw rod and the bearing of trend of said chute are consistent; Screw-thread fit between said adjusting screw rod and said crank pin, and the two ends of said adjusting screw rod are run through respectively and are stretched out in said first bearing and said second bearing.In the using process; Control of the bearing of trend slip of said crank pin through rotating said adjusting screw rod along said chute; To regulate between said crank pin and said chute and the relative position between said crank pin and said adjusting screw rod, till the centre distance between said crank pin and said crank disc equals the length of required crank.The whole operation process links up and is prone to control, and has realized the step-less adjustment of crank length, has improved the whole operating mode adaptive capacity of crankrocker mechanism greatly, and has made its application area be able to corresponding expansion.
In another preferred version of the utility model, the two ends of the fitting surface of said crank pin and said adjusting screw rod are respectively arranged with the assembly cap.This pieces together cap can be after the relative position between said crank pin and said adjusting screw rod be accomplished adjusting; Be anchored on the two ends of said crank pin; To realize the relative fixed and the locking of rigging position between said crank pin and said adjusting screw rod, guarantee the overall structure stability of crank length adjustment device described in the working procedure.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The assembly structure schematic representation of the crank length adjustment device that Fig. 1 is provided for a kind of embodiment of the utility model;
Fig. 2 is the structure plan view of Fig. 1.
Embodiment
The core of the utility model provides a kind of crank length adjustment device, and this crank length adjustment device can be realized the step-less adjustment of crank length.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1 and Fig. 2, the assembly structure schematic representation of the crank length adjustment device that Fig. 1 is provided for a kind of embodiment of the utility model; Fig. 2 is the structure plan view of Fig. 1.
In embodiment; The crank length adjustment device that the utility model provided comprises crank disc 11, and the bottom of crank disc 11 has supporting axle 111; The middle part of crank disc 11 has along its chute that radially extends 112, has been mounted slidably crank pin 12 in the chute 112; The two ends of chute 112 are fixed with first bearing 131 and second bearing 132 respectively; The inside of chute 112 also is provided with the adjusting screw rod 14 that runs through crank pin 12; The bearing of trend of the bearing of trend of adjusting screw rod 14 and chute 112 is consistent; 12 screw-thread fit of adjusting screw rod 14 and crank pin, and the two ends of adjusting screw rod 14 are run through respectively and are stretched out in first bearing 131 and second bearing 132.In the using process; Through rotating of the bearing of trend slip of adjusting screw rod 14 control crank pins 12 along chute 112; Regulating the relative position of 14 of crank pin 12 and 112 of chutes and crank pin 12 and adjusting screw rods, till the centre distance of 11 of crank pin 12 and crank discs equals the length of required crank.The whole operation process links up and is prone to control, and has realized the step-less adjustment of crank length, has improved the whole operating mode adaptive capacity of crankrocker mechanism greatly, and has made its application area be able to corresponding expansion.
Further, crank pin 12 is respectively arranged with assembly cap 121 with the two ends of the fitting surface of adjusting screw rod 14.This pieces together cap 121 can be after the relative position of 14 of crank pin 12 and adjusting screw rods be accomplished adjusting; Be anchored on the two ends of crank pin 12; To realize the relative fixed and the locking of crank pin 12 and 14 rigging positions of adjusting screw rod, guarantee the overall structure stability of crank length adjustment device described in the working procedure.
Particularly, be provided with voussoir 122 between the fitting surface of 112 of crank pin 12 and chutes.This voussoir 122 can be after said crank length adjustment device be accomplished adjusting; In the gap of the fitting surface that wedging and filling crank pin 12 and chute are 112; Eliminate until the gap; So that the assembly relation of 112 of crank pin 12 and chutes is more solid and reliable, guarantee that the overall structure of said crank length adjustment device is reliable and stable.
More specifically, be penetrated with bolt 123 on the voussoir 122, and voussoir 122 is fixed on the crank pin 12 through bolt 123 specifically.Adopt this kind bolt fixed mode can further improve the stability of the assembly relation of 12 of voussoir 122 and crank pins, and make its unloading process more simple and easy to do.
Further, voussoir 122 is specially two, and lays respectively at the both sides of crank pin 12.Two voussoirs of this kind, 122 symmetrically arranged assembly structures can further improve the structural reliability of crank pin 12 parts, and make the assembling intensity between its associated components be able to corresponding raising.
On the other hand, the cross section of two external parts of adjusting screw rod 14 is specially square.Adjusting screw rod 14 with the square external part of this kind can be convenient to the rotary operation of operator to adjusting screw rod 14, so that its adjustment process is more simple and easy to do, regulating effect more significantly effectively.
Certainly, the cross section of two external parts of above-mentioned adjusting screw rod 14 is specially the square preferred version that is merely, and its shape of cross section is not limited to square shown in the figure, all can so long as can satisfy the actual use needs of said crank length adjustment device.
In addition, be respectively arranged with the tapered roller bearing 133 that matches with adjusting screw rod 14 on first bearing 131 and second bearing 132.What this tapered roller bearing 133 can significantly improve adjusting screw rod 14 can be handling, and it is smooth that its adjustment process is linked up more, reduces the inoperative property wearing and tearing that its groundwork part causes because of rotation adjusting.
In addition, be respectively arranged with the bearing (ball) cover 134 suitable on first bearing 131 and second bearing 132 with tapered roller bearing 133.This bearing (ball) cover 134 is the groundwork part of guard circle taper roller bearing 133 effectively; Avoid impurity such as outside dust to get into and the proper functioning of tapered roller bearing 133 is impacted, to improve the working efficiency and the working stability of tapered roller bearing 133 and associated components thereof.
Can know that to sum up the crank length adjustment device that provides in the utility model comprises crank disc, the bottom of said crank disc has supporting axle, and the middle part of said crank disc has the chute that radially extends along it, has been mounted slidably crank pin in the said chute; The two ends of said chute are fixed with first bearing and second bearing respectively; The inside of said chute also is provided with the adjusting screw rod that runs through said crank pin; The bearing of trend of said adjusting screw rod and the bearing of trend of said chute are consistent; Screw-thread fit between said adjusting screw rod and said crank pin, and the two ends of said adjusting screw rod are run through respectively and are stretched out in said first bearing and said second bearing.In the using process; Control of the bearing of trend slip of said crank pin through rotating said adjusting screw rod along said chute; To regulate between said crank pin and said chute and the relative position between said crank pin and said adjusting screw rod, till the centre distance between said crank pin and said crank disc equals the length of required crank.The whole operation process links up and is prone to control, and has realized the step-less adjustment of crank length, has improved the whole operating mode adaptive capacity of crankrocker mechanism greatly, and has made its application area be able to corresponding expansion.
More than the crank length adjustment device that the utility model provided has been carried out detailed introduction.Used concrete example among this paper the principle and the mode of execution of the utility model are set forth, above embodiment's explanation just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. crank length adjustment device, it is characterized in that: comprise crank disc, the bottom of said crank disc has supporting axle, and the middle part of said crank disc has the chute that radially extends along it, has been mounted slidably crank pin in the said chute;
The two ends of said chute are fixed with first bearing and second bearing respectively; The inside of said chute also is provided with the adjusting screw rod that runs through said crank pin; The bearing of trend of said adjusting screw rod and the bearing of trend of said chute are consistent; Screw-thread fit between said adjusting screw rod and said crank pin, and the two ends of said adjusting screw rod are run through respectively and are stretched out in said first bearing and said second bearing.
2. crank length adjustment device as claimed in claim 1 is characterized in that: the two ends of the fitting surface of said crank pin and said adjusting screw rod are respectively arranged with the assembly cap.
3. crank length adjustment device as claimed in claim 1 is characterized in that: be provided with voussoir between the fitting surface between said crank pin and said chute.
4. crank length adjustment device as claimed in claim 3 is characterized in that: be penetrated with bolt on the said voussoir, and said voussoir concrete through said bolt on said crank pin.
5. crank length adjustment device as claimed in claim 4 is characterized in that: said voussoir is specially two, and lays respectively at the both sides of said crank pin.
6. like each described crank length adjustment device in the claim 1 to 5, it is characterized in that: the cross section of two external parts of said adjusting screw rod is specially square.
7. crank length adjustment device as claimed in claim 6 is characterized in that: be respectively arranged with the tapered roller bearing that matches with said adjusting screw rod on said first bearing and said second bearing.
8. crank length adjustment device as claimed in claim 7 is characterized in that: be respectively arranged with and the suitable bearing (ball) cover of said tapered roller bearing on said first bearing and said second bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120390150XU CN202251390U (en) | 2011-10-13 | 2011-10-13 | Crank length adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120390150XU CN202251390U (en) | 2011-10-13 | 2011-10-13 | Crank length adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251390U true CN202251390U (en) | 2012-05-30 |
Family
ID=46112638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120390150XU Expired - Fee Related CN202251390U (en) | 2011-10-13 | 2011-10-13 | Crank length adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193393A (en) * | 2018-03-19 | 2018-06-22 | 苏州强逸机械有限公司 | A kind of crank connecting link of adjustable length |
| CN109139841A (en) * | 2018-09-07 | 2019-01-04 | 中国科学院上海光学精密机械研究所 | Length-adjustable crank driving mechanism |
-
2011
- 2011-10-13 CN CN201120390150XU patent/CN202251390U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193393A (en) * | 2018-03-19 | 2018-06-22 | 苏州强逸机械有限公司 | A kind of crank connecting link of adjustable length |
| CN109139841A (en) * | 2018-09-07 | 2019-01-04 | 中国科学院上海光学精密机械研究所 | Length-adjustable crank driving mechanism |
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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: 20120530 Termination date: 20201013 |