CN201187997Y - Mechanism for spacing mechanical circumversion of turntable - Google Patents

Mechanism for spacing mechanical circumversion of turntable Download PDF

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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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China
Prior art keywords
fork
turntable
shift fork
edge
fixed seat
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Expired - Fee Related
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CNU200820071690XU
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Chinese (zh)
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韩光宇
高云国
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Abstract

本实用新型涉及一种转台机械回转限位机构,该机构包括固定在转台边缘的撞块,基座上的固定座,转块;转块包括第一拨叉、第二拨叉和挡叉;挡叉和第一拨叉、第二拨叉形成“Y”形,挡叉、第一拨叉和第二拨叉交接处的圆孔与固定座上的转轴动配合;转台在起始位置时,挡叉的第一边缘与固定座上的凸起相接触;转台转到限位位置时,挡叉的第二边缘与固定座上的凸起相接触。由于转台从起始位置转到限位位置,挡叉转动的角度较小,因而撞块与第一拨叉和第二拨叉之间、挡叉与多边形凸起之间产生的冲击力小,提高了机构的使用寿命。

Figure 200820071690

The utility model relates to a mechanical rotation limit mechanism of a turntable, which comprises a collision block fixed on the edge of the turntable, a fixed seat on a base, and a turn block; the turn block includes a first shift fork, a second shift fork and a stop fork; The stop fork, the first shift fork, and the second shift fork form a "Y" shape, and the round hole at the junction of the block fork, the first shift fork and the second shift fork moves with the rotating shaft on the fixed seat; when the turntable is at the initial position , the first edge of the fork is in contact with the protrusion on the fixed seat; when the turntable turns to the limit position, the second edge of the fork is in contact with the protrusion on the fixed seat. Since the turntable turns from the initial position to the limit position, the rotation angle of the stop fork is small, so the impact force generated between the bumper and the first shift fork and the second shift fork, and between the stop fork and the polygonal protrusion is small, The service life of the mechanism is improved.

Figure 200820071690

Description

Turntable machinery rotation position-limit mechanism
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、一种转台机械回转限位机构,包括固定在转台边缘的撞块,基座上的固定座,转块;所述的转块包括第一拨叉和第二拨叉,其特征在于所述的转块(4)还包括挡叉(7);挡叉(7)和第一拨叉(5)、第二拨叉(6)形成“Y”形,挡叉(7)、第一拨叉(5)和第二拨叉(6)交接处的圆孔与固定座(13)上的转轴(3)动配合;转台在起始位置时,挡叉的第一边缘(8)与固定座(13)上的凸起(10)相接触;转台转到限位位置时,挡叉的第二边缘(9)与固定座(13)上的凸起(10)相接触。1. A mechanical rotation limit mechanism for a turntable, including a bumper fixed on the edge of the turntable, a fixed seat on the base, and a turntable; the turntable includes a first shift fork and a second shift fork, and is characterized in that the The above-mentioned turning block (4) also includes a retaining fork (7); the retaining fork (7) forms a "Y" shape with the first shifting fork (5) and the second shifting fork (6), and the retaining fork (7), the first shifting fork The round hole at the junction of the shift fork (5) and the second shift fork (6) is in motion with the rotating shaft (3) on the fixed seat (13); The protrusion (10) on the fixed seat (13) contacts; when the turntable turns to the limit position, the second edge (9) of the retaining fork contacts with the protrusion (10) on the fixed seat (13). 2、根据权利要求1所述的转台机械回转限位机构,其特征在于所述的固定座(13)上的凸起(10)为多边形凸缺,转块(4)的挡叉(7)伸入该多边形凸缺中;当转台处于起始位置和限位位置时,挡叉的第一边缘(8)和第二边缘(9)分别与多边形凸缺相对的两个内表面相接触。2. The mechanical rotation limit mechanism of the turntable according to claim 1, characterized in that the protrusion (10) on the fixed seat (13) is a polygonal protrusion, and the stop fork (7) of the turn block (4) Extending into the polygonal notch; when the turntable is at the initial position and the limit position, the first edge (8) and the second edge (9) of the fork are respectively in contact with the two inner surfaces opposite to the polygonal notch. 3、根据权利要求1所述的转台机械回转限位机构,其特征在于所述的挡叉的第一边缘(8)和第二边缘(9)粘贴垫片。3. The mechanical rotation limit mechanism of the turntable according to claim 1, characterized in that the first edge (8) and the second edge (9) of the stop fork are pasted with gaskets. 4、根据权利要求1所述的转台机械回转限位机构,其特征在于所述的转轴(3)有一台肩;固定座(13)上固定的压板(2)的中央圆孔套在转轴(3)台肩处。4. The turntable mechanical rotation limit mechanism according to claim 1, characterized in that the rotating shaft (3) has a shoulder; the central round hole of the pressure plate (2) fixed on the fixed seat (13) is sleeved on the rotating shaft ( 3) At the shoulder.
CNU200820071690XU 2008-04-14 2008-04-14 Mechanism for spacing mechanical circumversion of turntable Expired - Fee Related CN201187997Y (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
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 A mechanical buffer limit structure and turntable with a limit rotation angle range greater than 360°
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

Cited By (15)

* Cited by examiner, † Cited by third party
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 A mechanical buffer limit structure and turntable with a limit rotation angle range greater than 360°
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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Granted publication date: 20090128

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