CN201187997Y - Mechanism for spacing mechanical circumversion of turntable - Google Patents
Mechanism for spacing mechanical circumversion of turntable Download PDFInfo
- Publication number
- CN201187997Y CN201187997Y CNU200820071690XU CN200820071690U CN201187997Y CN 201187997 Y CN201187997 Y CN 201187997Y CN U200820071690X U CNU200820071690X U CN U200820071690XU CN 200820071690 U CN200820071690 U CN 200820071690U CN 201187997 Y CN201187997 Y CN 201187997Y
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- turntable
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- shift fork
- retaining
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Abstract
The utility model relates to a rotary table mechanical-returning limit mechanism which comprises a link stopper fixed at the edge of a rotary table, a fixing base arranged on the base, and a rotary block. The rotary block comprises a first shift fork, a second shift fork and a blocking fork; the blocking fork and the first and the second forks form the shape of the letter Y; a circular hole at the joint of the blocking fork and the first and the second forks cooperates with a rotating shaft on the fixed base; when the rotary table is at the start position, a first edge of the blocking fork is contacted with a projection on the fixed base; when the rotary table rotates to the limit position, a second edge of the blocking fork is contacted with the projection on the fixed base. As the rotary table rotates from the start position to the limit position and the rotational angle of the blocking fork is small, the impact generated between the first and the second shift forks and between the blocking fork and the polygonal projection is small, thereby the service life of the mechanism is improved.
Description
Technical field
The utility model relates to a kind of gyration equipment limit mechanism, particularly a kind of gyration equipment turntable machinery rotation position-limit mechanism.
Background technology
In gyration equipment such as transit, gyroscope,, usually pivoting part is carried out the spacing and mechanical position limitation of electricity simultaneously for requirement to equipment protection and equipment precision.
At present, the mechanism that in gyration such as transit, the gyroscope equipment turntable is carried out mechanical position limitation mainly is made of holder on the collision block that is fixed on the turntable edge, the pedestal and switch block.Described switch block comprises first shift fork and second shift fork, and two shift forks form " V " shape; First shift fork and second shift fork joint processing circular hole, the rotating shaft of installing on this circular hole and the holder movingly, switch block can be around this rotating shaft rotation.Turntable is when reference position and spacing position, and first shift fork and second shift fork contact with projection on the holder respectively.Described projection is " V " shape projection; Turntable is when reference position, and the collision block on it contacts with the outward flange of first shift fork; This moment, first shift fork was in a high position, and second shift fork is in low level, and the lower limb of second shift fork contacts with " V " shape projection on the holder.Turntable clockwise rotates, and when collision block is run into first shift fork, stirs switch block, and switch block is rotated around the axis, and first shift fork turns to low level, and second shift fork is in a high position, and the lower limb of first shift fork contacts with " V " shape projection on the holder; Turntable is rotated further, and stops operating when collision block is run into the outward flange of second shift fork.Turntable rotates counterclockwise, and when collision block is run into second shift fork, stirs switch block, and switch block is rotated around the axis, and second shift fork turns to low level, and first shift fork is in a high position, and the lower limb of second shift fork contacts with " V " shape projection on the holder; Turntable is rotated further, and stops operating when collision block is run into the outward flange of first shift fork.The shortcoming of this position-limit mechanism is to have the dead band, can not realize 720 ° spacing; If to realize 720 ° spacing, just need reduce the angle between first shift fork and second shift fork, bring first shift fork and the second shift fork shear strength little so again, anti-impact force is poor, the problem of lacking serviceable life.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of 0 ° of-720 ° of scope of gyration parts that can realize in the gyration equipment and rotates, and strong shock resistance, the turntable machinery rotation position-limit mechanism of long service life.
Turntable machinery rotation position-limit mechanism of the present utility model comprises the collision block that is fixed on the turntable edge, the holder on the pedestal, switch block; Described switch block comprises first shift fork and second shift fork, it is characterized in that described switch block also comprises the retaining fork; The retaining fork and first shift fork, second shift fork form " Y " shape, and the circular hole of retaining fork, first shift fork and the second shift fork junction and the rotating shaft on the holder are movingly; Turntable is when reference position, and first edge of retaining fork contacts with the projection on the holder; When turntable forwarded spacing position to, second edge of retaining fork contacted with the projection on the holder.
Turntable is when reference position, and the collision block on it contacts with the outward flange of first shift fork; This moment, first shift fork was in a high position, and second shift fork is in low level, and first edge of retaining fork contacts with the projection on the holder.Turntable clockwise rotates, and when collision block is run into first shift fork, stirs switch block, and switch block is rotated around the axis, and first shift fork turns to low level, and second shift fork is in a high position, and second edge of retaining fork contacts with the projection of holder; Turntable is rotated further, and stops operating when collision block is run into the outward flange of second shift fork.Turntable rotates counterclockwise, and when collision block is run into second shift fork, stirs switch block, and switch block is rotated around the axis, and second shift fork turns to low level, and first shift fork is in a high position, and first edge of retaining fork contacts with the projection on the holder; Turntable is rotated further, and stops operating when collision block is run into the outward flange of first shift fork.Because turntable forwards spacing position to from reference position, the angle that the retaining fork rotates is less, thus between collision block and first shift fork and second shift fork, retaining is pitched and the polygon projection between the impulsive force that produces little, improved serviceable life of mechanism.
To be that polygon is protruding lack projection on the described holder, during the retaining fork of switch block stretches into that this polygon is protruding and lacks; When turntable was in reference position and spacing position, first edge of retaining fork and second edge contacted with right two inside surfaces of the protruding phase shortage of polygon respectively.
Pad is pasted at first edge and second edge of described retaining fork, the protruding impact between scarce of retaining fork and polygon when turning to reference position and spacing position to reduce turntable.
Described rotating shaft has a shoulder; The central circular hole of fixing pressing plate is enclosed within rotating shaft shoulder place on the holder, in switch block is limited to that polygon is protruding and lacks.
Description of drawings
Fig. 1 is the utility model front view.4 switch blocks among the figure, 5 first shift forks, 6 second shift forks, 7 retaining forks, first edge of 8 retaining forks, second edge of 9 retaining forks, 10 projectioies, first inside surface of 11 projectioies, second inside surface of 12 projectioies.
Fig. 2 is that the A-A of Fig. 1 is to cut-open view.1 collision block among the figure, 2 pressing plates, 3 rotating shafts, 13 holders.
Embodiment
As shown in Figure 1, 2, turntable machinery rotation position-limit mechanism of the present utility model comprises the collision block 1 that is fixed on the turntable edge, the holder 13 on the pedestal, switch block 4; Described switch block 4 comprises first shift fork 5, second shift fork 6 and retaining fork 7, and retaining fork 7 and first shift fork 5, second shift fork 6 form " Y " shape.To be that polygon is protruding lack projection 10 on the described holder 13, during retaining fork 7 stretches into that this polygon is protruding and lacks.Rotating shaft 3 is installed on the holder 13, and rotating shaft 3 has a shoulder; First shift fork 5, second shift fork 6 are pitched 7 junction processing through hole with retaining, and this through hole and rotating shaft 3 are movingly; Pressing plate 2 adopts screw retention on holder 13, and the circle hole sleeve of pressing plate 2 central authorities is at the shoulder place of rotating shaft 3, in switch block 4 is limited to that polygon is protruding and lacks.
First inside surface 11 of projection 10 is relative with second inside surface, 12 positions of projection 10.Turntable is when reference position, and first inside surface 11 of the projection 10 on first edge 8 of retaining fork and the holder 13 contacts; When turntable forwarded spacing position to, second inside surface 12 of the projection 10 on second edge 9 of retaining fork and the holder 13 contacted.
Pad is pasted at first edge 8 and second edge of described retaining fork, the protruding impact between scarce of retaining fork 7 and polygon when turning to reference position and spacing position to reduce turntable.
Claims (4)
1, a kind of turntable machinery rotation position-limit mechanism comprises the collision block that is fixed on the turntable edge, the holder on the pedestal, switch block; Described switch block comprises first shift fork and second shift fork, it is characterized in that described switch block (4) also comprises retaining fork (7); Retaining fork (7) and first shift fork (5), second shift fork (6) form " Y " shape, and the circular hole of retaining fork (7), first shift fork (5) and second shift fork (6) junction and the rotating shaft (3) on the holder (13) are movingly; Turntable is when reference position, and first edge (8) of retaining fork contacts with the projection (10) on the holder (13); When turntable forwarded spacing position to, second edge (9) of retaining fork contacted with the projection (10) on the holder (13).
2, turntable machinery rotation position-limit mechanism according to claim 1 is characterized in that the projection (10) on the described holder (13) lacks for polygon is protruding, during the retaining fork (7) of switch block (4) stretches into that this polygon is protruding and lacks; When turntable was in reference position and spacing position, first edge (8) of retaining fork and second edge (9) contacted with right two inside surfaces of the protruding phase shortage of polygon respectively.
3, turntable machinery rotation position-limit mechanism according to claim 1 is characterized in that first edge (8) and second edge (9) stickup pad that described retaining is pitched.
4, turntable machinery rotation position-limit mechanism according to claim 1 is characterized in that described rotating shaft (3) has a shoulder; The central circular hole that holder (13) is gone up fixing pressing plate (2) is enclosed within rotating shaft (3) shoulder place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820071690XU CN201187997Y (en) | 2008-04-14 | 2008-04-14 | Mechanism for spacing mechanical circumversion of turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820071690XU CN201187997Y (en) | 2008-04-14 | 2008-04-14 | Mechanism for spacing mechanical circumversion of turntable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187997Y true CN201187997Y (en) | 2009-01-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820071690XU Expired - Fee Related CN201187997Y (en) | 2008-04-14 | 2008-04-14 | Mechanism for spacing mechanical circumversion of turntable |
Country Status (1)
| Country | Link |
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| CN (1) | CN201187997Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493985A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Rotary limiting mechanism for turntable |
| CN102566653A (en) * | 2012-01-16 | 2012-07-11 | 中国船舶重工集团公司第七二三研究所 | Limiting mechanism for small rotary table with rotating angle of more than 360 degrees |
| CN103324242A (en) * | 2013-06-25 | 2013-09-25 | 常州铭赛机器人科技有限公司 | Rotation limitation and orientation identification mechanism and limiting and identifying method thereof |
| CN105203090A (en) * | 2015-10-21 | 2015-12-30 | 陕西宝成航空仪表有限责任公司 | Gyro with locking and unlocking mechanism |
| CN105353774A (en) * | 2014-08-22 | 2016-02-24 | 北京瑞赛长城航空测控技术有限公司 | Limiting mechanism for rotary table with selective rotating angle of between plus or minus 360 degrees |
| CN105437186A (en) * | 2015-12-30 | 2016-03-30 | 中国科学院长春光学精密机械与物理研究所 | Over-360-degree revolution limiting device for rotary platform |
| CN107479579A (en) * | 2017-08-24 | 2017-12-15 | 中国科学院长春光学精密机械与物理研究所 | A kind of spacing detection method and system of the framework photoelectric stable platform of two axle four |
| CN108594863A (en) * | 2018-04-03 | 2018-09-28 | 北京航天控制仪器研究所 | A kind of position limiting structure and method of positive and negative 180 ° of turntables |
| CN111692482A (en) * | 2020-06-19 | 2020-09-22 | 中国电子科技集团公司第二十九研究所 | Mechanical limiting mechanism of rotary table with limited rotation angle range reaching +/-360 degrees |
| CN111810586A (en) * | 2020-07-08 | 2020-10-23 | 中国电子科技集团公司第二十九研究所 | Mechanical buffering limit structure with limited rotation angle range larger than 360 degrees and rotary table |
| CN112993723A (en) * | 2019-12-12 | 2021-06-18 | 中国科学院长春光学精密机械与物理研究所 | Rotary sealing device for high-energy laser transmission |
-
2008
- 2008-04-14 CN CNU200820071690XU patent/CN201187997Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493985A (en) * | 2011-12-09 | 2012-06-13 | 中国科学院长春光学精密机械与物理研究所 | Rotary limiting mechanism for turntable |
| CN102566653A (en) * | 2012-01-16 | 2012-07-11 | 中国船舶重工集团公司第七二三研究所 | Limiting mechanism for small rotary table with rotating angle of more than 360 degrees |
| CN102566653B (en) * | 2012-01-16 | 2013-10-23 | 中国船舶重工集团公司第七二三研究所 | Limiting mechanism for small rotary table with rotating angle of more than 360 degrees |
| CN103324242A (en) * | 2013-06-25 | 2013-09-25 | 常州铭赛机器人科技有限公司 | Rotation limitation and orientation identification mechanism and limiting and identifying method thereof |
| CN105353774A (en) * | 2014-08-22 | 2016-02-24 | 北京瑞赛长城航空测控技术有限公司 | Limiting mechanism for rotary table with selective rotating angle of between plus or minus 360 degrees |
| CN105203090B (en) * | 2015-10-21 | 2017-12-29 | 陕西宝成航空仪表有限责任公司 | Gyro with locking unlocking mechanism |
| CN105203090A (en) * | 2015-10-21 | 2015-12-30 | 陕西宝成航空仪表有限责任公司 | Gyro with locking and unlocking mechanism |
| CN105437186A (en) * | 2015-12-30 | 2016-03-30 | 中国科学院长春光学精密机械与物理研究所 | Over-360-degree revolution limiting device for rotary platform |
| CN107479579A (en) * | 2017-08-24 | 2017-12-15 | 中国科学院长春光学精密机械与物理研究所 | A kind of spacing detection method and system of the framework photoelectric stable platform of two axle four |
| CN108594863A (en) * | 2018-04-03 | 2018-09-28 | 北京航天控制仪器研究所 | A kind of position limiting structure and method of positive and negative 180 ° of turntables |
| CN108594863B (en) * | 2018-04-03 | 2021-06-11 | 北京航天控制仪器研究所 | Limiting structure and method for positive and negative 180-degree rotary table |
| CN112993723A (en) * | 2019-12-12 | 2021-06-18 | 中国科学院长春光学精密机械与物理研究所 | Rotary sealing device for high-energy laser transmission |
| CN111692482A (en) * | 2020-06-19 | 2020-09-22 | 中国电子科技集团公司第二十九研究所 | Mechanical limiting mechanism of rotary table with limited rotation angle range reaching +/-360 degrees |
| CN111810586A (en) * | 2020-07-08 | 2020-10-23 | 中国电子科技集团公司第二十九研究所 | Mechanical buffering limit structure with limited rotation angle range larger than 360 degrees and rotary table |
| CN111810586B (en) * | 2020-07-08 | 2021-09-28 | 中国电子科技集团公司第二十九研究所 | Mechanical buffering limit structure with limited rotation angle range larger than 360 degrees and rotary table |
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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: 20090128 Termination date: 20110414 |