CN201053482Y - Crank rocking rod mechanism with continuously variable crank length - Google Patents
Crank rocking rod mechanism with continuously variable crank length Download PDFInfo
- Publication number
- CN201053482Y CN201053482Y CNU2007201496372U CN200720149637U CN201053482Y CN 201053482 Y CN201053482 Y CN 201053482Y CN U2007201496372 U CNU2007201496372 U CN U2007201496372U CN 200720149637 U CN200720149637 U CN 200720149637U CN 201053482 Y CN201053482 Y CN 201053482Y
- Authority
- CN
- China
- Prior art keywords
- crank
- bent axle
- length
- crankshaft
- planetary gear
- 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
The utility model relates to a crank-rocker mechanism with continuously adjustable length of a crank, wherein, a crankshaft and an eccentric crank pin are formed into a double eccentric mechanism; a control motor is fixed inside the axle hole of the crankshaft; the gear ring arranged inside a planetary gear set is fixed with the crank pin; the sun gear of the planetary gear set is fixed with the output shaft of the control motor, while the planet carrier is arranged on the corresponding support holes of the crankshaft. The eccentric distance of the double eccentric mechanism is equal to the length of the crankshaft of the crank-rocker mechanism, and the continuous variation of the eccentric distance results in corresponding continuous variation of the length of the crankshaft; therefore, the continuous adjustment of the maximum swinging angular velocity of a rocker can be realized inside a crank-link mechanism.
Description
(1) technical field:
The utility model relates to a kind of novel continuously adjustable crankrocker mechanism of crank length, belongs to planar linkage drive technology field.
(2) background technique:
Present traditional crankrocker mechanism, its bar length mostly is fixed value, can not adjust.Though this mechanism also can realize the conversion between rotatablely moving of crank and the rocking arm oscillating traverse motion, the ratio between its conversion angle speed is unique, and must change new parts when needs change crank size.
(3) model utility content:
The crankrocker mechanism of a kind of continuous variable crank of the utility model length, its purpose is: provide a kind of crank length continuously adjustable, do not need renewal part can realize the crankrocker mechanism of different size requirement.
The crankrocker mechanism of a kind of continuous variable crank of the utility model length is characterized in that it forms double eccentric mechanism by bent axle 1 and eccentric crank pin 2, crank pin 2 under the control of controlling motor 7 in bent axle 1 independent rotation adjust throw of eccentric; Control motor 7 is fixed in the axis hole of bent axle 1; Gear ring 11 in the planetary gear set 6 is connected with crank pin 2, the sun gear 12 of planetary gear set 6 and control motor 7 output shaft fixed connections, and 13 of the planet wheels of planetary gear set 6 are on bent axle 1 corresponding supported hole 10.Aforesaid planetary pinion and sun gear, its module can need according to actual conditions, selects according to national technical standard that (module of general planetary pinion and sun gear is selected for use and is m=1.5mm～10mm) for use.
Wherein, have axis hole 15 in the bent axle, the control motor 7 of fixedly connected band sliding brush 8 is arranged in the axis hole 15.
Wherein, have the aperture 9 of drawing control motor 7 leads on the bent axle outer wall, and outer wall there are two sliding brush 8.
Wherein, bent axle 1 big end surface has the circular hole 14 of an off-centre.Crank pin 2 for discoid, off-centre is fixed a cylinder shank 5 on it.
The throw of eccentric of double eccentric mechanism is the crank length of crankrocker mechanism, so the throw of eccentric of double eccentric mechanism changes the crank length that is connecting rod continuously and changes continuously, thereby can in connecting rod, realize the adjustable continuously of rocking bar swing maximum angular rate.
The utility model is because adopted novel double eccentric mechanism as crank, and traditional relatively crankrocker mechanism has the following advantages:
＜1〉crank length can be adjusted as requested automatically.
＜2〉adjustment of crank length is continuous.
＜3〉crank rolling velocity is infinitely great to the velocity ratio adjustment range between the rocking arm swing maximum angular rate.
(4) description of drawings:
Figure 1 shows that structural representation of the present utility model.
Figure 2 shows that the utility model internal structure schematic representation.
Figure 3 shows that the utility model crankshaft structure schematic representation.
1, bent axle 2, crank pin 3, connecting rod
4, Rocker arm 5, cylinder shank 6, planetary gear set
7, control motor 8, sliding brush 9, aperture
10, supported hole 11, gear ring 12, sun gear
13, circular hole 15, the axis hole of planet wheel 14, off-centre
(5) embodiment:
See also shown in Fig. 1,2, the crankrocker mechanism of a kind of continuous variable crank of the utility model length, mainly form planetary pinion in the planetary gear set and sun gear, its m=1.5mm by members such as bent axle 1, crank pin 2, planetary gear set 6, control motor 7, connecting rod 3, Rocker arm 4s.
Wherein, bent axle 1 and crank pin 2 are formed double eccentric mechanism; The gear ring 11 of planetary gear set 6 is connected with welding or card mode with crank pin 2; Control motor 7 fixes in the axis hole of bent axle 1, links to each other with crank pin 2 by planetary gear set 6, and can drive crank pin 2 rotations; The sun gear 12 of planetary gear set 6 fixes with control motor 7 output shafts, and 13 of the planet wheels of planetary gear set 6 are on bent axle 1 corresponding supported hole 10; Connecting rod 3 and crank pin 2 are for revolute pair is connected, and connecting rod 3 is that revolute pair is connected with rocking arm.
When control motor 7 did not rotate, bent axle 1 immobilized with the relative rotation of crank pin 2, and bent axle 1 directly drives crank pin 2 and rotates, and this moment, the crank length of crankrocker mechanism was constant.When needs are adjusted crank length, the certain corner of control motor 7 outputs, drive crank pin 2 relative bent axles 1 and turn over an angle, the central shaft of the cylinder shank 5 on the crank pin 2 and the distance between bent axle 1 center of rotation change at this moment, the throw of eccentric that is double eccentric mechanism changes, and crank length obtains adjusting.If the output corner of therefore continuous change control motor 7, then continuous variation will take place in the distance between the central shaft of the cylinder shank 5 on the crank pin 2 and bent axle 1 center of rotation, and this moment, crank length will obtain a continuous adjustment.
Claims (4)
1. the crankrocker mechanism of a continuous variable crank length is characterized in that: it forms double eccentric mechanism by bent axle (1) and eccentric crank pin (2), controls motor (7) and is fixed in the axis hole (14) of bent axle (1); Gear ring (11) in the planetary gear set (6) is connected with crank pin (2), the sun gear (12) of planetary gear set (6) and control motor (7) output shaft fixed connection, and planet wheel (13) frame of planetary gear set (6) is on the corresponding supported hole (10) of bent axle (1).
2. the crankrocker mechanism of continuous variable crank length according to claim 1 is characterized in that: have the aperture (9) of drawing control motor (7) lead on this bent axle (1) outer wall, and outer wall has two sliding brush (8).
3. the crankrocker mechanism of continuous variable crank length according to claim 1 is characterized in that: this bent axle (1) big end surface has the circular hole (14) of an off-centre.
4. the crankrocker mechanism of continuous variable crank length according to claim 1 is characterized in that: this crank pin (2) for discoid, off-centre is fixed a cylinder shank (5) on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201496372U CN201053482Y (en) | 2007-06-14 | 2007-06-14 | Crank rocking rod mechanism with continuously variable crank length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201496372U CN201053482Y (en) | 2007-06-14 | 2007-06-14 | Crank rocking rod mechanism with continuously variable crank length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053482Y true CN201053482Y (en) | 2008-04-30 |
Family
ID=39393145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201496372U Expired - Fee Related CN201053482Y (en) | 2007-06-14 | 2007-06-14 | Crank rocking rod mechanism with continuously variable crank length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201053482Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343536A (en) * | 2011-10-31 | 2012-02-08 | 绍兴市家度弹簧机械有限公司 | Abrasive wheel oscillating mechanism of double end-surface vertical grinding machine |
| CN102481687A (en) * | 2009-09-01 | 2012-05-30 | 罗伯特·博世有限公司 | Drill hammer and/or chipping hammer device |
| CN111345906A (en) * | 2020-03-13 | 2020-06-30 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Splashproof baffle that artificial joint replacement art was used |
-
2007
- 2007-06-14 CN CNU2007201496372U patent/CN201053482Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102481687A (en) * | 2009-09-01 | 2012-05-30 | 罗伯特·博世有限公司 | Drill hammer and/or chipping hammer device |
| US10183390B2 (en) | 2009-09-01 | 2019-01-22 | Robert Bosch Gmbh | Drill hammer and/or chipping hammer device |
| CN102343536A (en) * | 2011-10-31 | 2012-02-08 | 绍兴市家度弹簧机械有限公司 | Abrasive wheel oscillating mechanism of double end-surface vertical grinding machine |
| CN111345906A (en) * | 2020-03-13 | 2020-06-30 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Splashproof baffle that artificial joint replacement art was used |
| CN111345906B (en) * | 2020-03-13 | 2021-07-20 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Splashproof baffle that artificial joint replacement art was used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20100614 |