CN102493985A - Rotary limiting mechanism for turntable - Google Patents
Rotary limiting mechanism for turntable Download PDFInfo
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- CN102493985A CN102493985A CN2011104090516A CN201110409051A CN102493985A CN 102493985 A CN102493985 A CN 102493985A CN 2011104090516 A CN2011104090516 A CN 2011104090516A CN 201110409051 A CN201110409051 A CN 201110409051A CN 102493985 A CN102493985 A CN 102493985A
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- pivoted arm
- turntable
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Abstract
The invention relates to a rotary limiting mechanism for a turntable. The mechanism comprises a turning block, a fixing seat and a collision block, wherein the turning block consists of a first turning arm and a second turning arm which are vertical to each other; the turning block is movably connected with the fixing seat through a turning block shaft and can rotate about the turning block shaft in a range of 90 degrees; the collision block is fixed on an edge of a rotary part of the turntable; and when the collision block starts to rotate anticlockwise or clockwise at a 0-degree position of the turntable along the rotary part, the turning block can be pulled to rotate, and when the collision block rotates to a limiting position along the rotary part, the collision block collides the first turning arm or the second turning arm so as to realize rotary limiting of the turntable. The rotary limiting mechanism is a mechanical rotary limiting structure and has a simple structure and high reliability, and rotary limiting at approximate +/-360 degrees can be realized.
Description
Technical field
The present invention relates to a kind of turntable slewing limit protection mechanism.
Technical background
In some turret plant, because need of work, the turntable angle of swing is approaching ± 360 °; Disconnected in order to prevent cable, optical cable etc. in the equipment by strand, position limitation protection mechanism need be set, the position-limit mechanism that adopts at present is a kind of electromechanical swirl gear; Major defect is the structure somewhat complicated, need be attached to level sensor with the state sensor of judging stop location and carry out logic and judge and realize that electricity is spacing that reliability has much room for improvement; Another shortcoming is that block is smaller to the induction range to level sensor; Turntable is because inertia is easy to break through electric spacing scope, and it is spacing to produce mechanical collision, turntable is produced impact.
Summary of the invention
The technical problem that the present invention will solve provides a kind of simple in structure, turntable slewing limit mechanism that reliability is high.
In order to solve the problems of the technologies described above, turntable slewing limit mechanism of the present invention comprises switch block, fixed base, collision block; Said switch block is made up of orthogonal first pivoted arm and second pivoted arm, and switch block flexibly connects through switch block axle and fixed base, and the piece axle that can rotate rotates in 90 ° of scopes; Collision block is fixed on the edge of turntable rotating part, when collision block is begun counterclockwise by 0 ° of position of turntable with rotating part or turns clockwise, can stir switch block and make its rotation; When collision block rotates to spacing position with rotating part, collide first pivoted arm or second pivoted arm of switch block, realize the turntable slewing limit.
When turntable was begun to be rotated counterclockwise by 0 ° of position, first pivoted arm that collision block is stirred switch block made it turn clockwise 90 °, and collision block continues to rotate with turntable then.When turntable went to spacing position counterclockwise, collision block collided the outer side surface of second pivoted arm, realized that the positive alpha angle degree is spacing.Collision block turns clockwise with turntable after colliding the second pivoted arm outer side surface.When turntable went to 0 ° of position, second pivoted arm that collision block is stirred switch block made it be rotated counterclockwise 90 °, and turntable continues rotation then.When the turntable dextrorotation went to spacing position, collision block 7 collided the outer side surface of first pivoted arm, realized that the negative alpha angle degree is spacing.
The present invention is the machinery rotation limit structure, and is simple in structure, reliability is high, can realize the slewing limit of approaching ± 360 °.
The present invention can also comprise contact switch; Said contact switch is fixed on the fixed base; When first pivoted arm was in substantially horizontal, switch block did not contact with contact switch, and contact switch breaks off; When first pivoted arm was in Vertical direction, switch block contacted with contact switch, and contact switch is connected.
When the turntable rotating part was begun to be rotated counterclockwise by 0 ° of position, first pivoted arm that collision block is stirred switch block turned clockwise it, and switch block and contact switch break away from, and contact switch breaks off, inform the rotating platform control system rotating part be in 0 °～+ the α scope in.When the dextrorotation of turntable rotating part rotates back into 0 ° of position; Second pivoted arm that collision block is stirred switch block is rotated counterclockwise it and gets back to initial position; Switch block contacts with contact switch, and contact switch is connected, inform the rotating platform control system rotating part be in 0 °～-the α scope in.
First pivoted arm of said switch block and the outside of second pivoted arm fixed installation elastic buffering mechanism are used to avoid collision block direct collision switch block to produce and impact.
The elastic buffering mechanism that is installed on first pivoted arm is made up of spring compression leg, damping spring, compression leg nut; Be processed with through hole on first pivoted arm, the compression leg nut is stuck in the inner shoulder place of through hole and is threaded with part that the spring compression leg stretches into through hole; Damping spring is set between the spring compression leg end and the first pivoted arm outer side surface.
The elastic buffering mechanism that is installed on second pivoted arm is identical with elastic buffering mechanism structure on first pivoted arm.
When collision block rotates counterclockwise the spacing position of arrival, collide the spring compression leg of the second pivoted arm elastic buffering mechanism; Collision block clockwise rotates when arriving spacing position, collides the spring compression leg of the first pivoted arm elastic buffering mechanism, and spring compression leg compression damping spring absorbs energy, realizes soft spacingly, avoids impacting.
The present invention can also comprise clockwise electric limit sensors and counterclockwise electric limit sensors; First pivoted arm of switch block and the end face of second pivoted arm are step surface; Clockwise electric limit sensors and counterclockwise electric limit sensors are fixed in the both sides of collision block; And the radial position of clockwise electric limit sensors is corresponding with the high face of the step position of first pivoted arm, and the radial position of counterclockwise electric limit sensors is corresponding with the high face of the step position of second pivoted arm.
Adjust the high and low position of clockwise electric limit sensors and counterclockwise electric limit sensors; Do not produce feedback signal when making clockwise electric limit sensors through the step bottom surface of second pivoted arm; Produce feedback signal during through the high face of first step; Feed back the information that puts in place, the notice control system is taked brake measure, realizes that electricity is spacing; Counterclockwise electric limit sensors does not produce feedback signal during through the step bottom surface of first pivoted arm, produces feedback signal during through the high face of step of second pivoted arm, the feedback information that puts in place, and the notice control system is taked brake measure, realizes that electricity is spacing.
The reaction range of high face of switch block step and electric limit sensors is big, and the control system stopping distance is big, and turntable is difficult for breaking through electric spacing scope and produces mechanical position limitation.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is turntable slewing limit mechanism of the present invention and turntable relative position schematic representation.
Fig. 2 is the plan view of turntable slewing limit mechanism of the present invention.
Fig. 3 is the right elevation of Fig. 2.
Fig. 4 is the left view of Fig. 2.
Fig. 5 is the stereogram of switch block.
Embodiment
As shown in Figure 1, the switch block 3 of turntable slewing limit mechanism of the present invention flexibly connects with fixed base 5; Collision block 7 is fixed on the edge of turntable rotating part 30.
Like Fig. 2,3,4, shown in 5, turntable slewing limit mechanism of the present invention comprises contact switch 1, switch block 3, fixed base 5, clockwise electric limit sensors 6, collision block 7 and counterclockwise electric limit sensors 10.Said fixed base 5 is connected with turntable standing part (pedestal) through fixed base screw 4, and contact switch 1 is fixed on the fixed base 5; Switch block 3 is made up of orthogonal first pivoted arm 31 and second pivoted arm 35, flexibly connects through switch block axle 2 and fixed base 5, and switch block hubcap 14 is fixedly connected with fixed base 5; The elastic buffering mechanism that is installed on first pivoted arm 31 is made up of spring compression leg 11, damping spring 12, compression leg nut 13; Be processed with through hole 34 on first pivoted arm, compression leg nut 13 is stuck in inner shoulder 41 places of through hole 34 and is threaded with part that spring compression leg 11 stretches into through hole 34; Damping spring 12 is set between the outer side surface of spring compression leg 11 ends and first pivoted arm 31; It is identical with elastic buffering mechanism structure on first pivoted arm 31 to be installed on the structure of the elastic buffering mechanism on second pivoted arm 35, is made up of spring compression leg 21, damping spring 22, compression leg nut (not shown); First pivoted arm 31 of switch block 3 and the end face of second pivoted arm 35 are step surface.Collision block 7 is fixedly connected with the edge of rotating part 30 through collision block screw 8; Clockwise electric limit sensors 6 is fixedly connected with collision block 7 through sensor frame 20, sensor frame 9 respectively with counterclockwise electric limit sensors 10; And the radial position of clockwise electric limit sensors 6 is corresponding with the high face of step 33 positions of first pivoted arm 31, and the radial position of counterclockwise electric limit sensors 10 is corresponding with the high face of step 36 positions of second pivoted arm 35.Adjust the high and low position of clockwise electric limit sensors 6 and counterclockwise electric limit sensors 10, do not produce feedback signal when making clockwise electric limit sensors 6, produce feedback signal during through the high face 33 of the step of first pivoted arm 31 through the step bottom surface 37 of second pivoted arm 35; Feed back the information that puts in place; The notice rotating platform control system is taked brake measure, realizes that electricity is spacing, and counterclockwise electric limit sensors 10 does not produce feedback signal during through the step bottom surface 32 of first pivoted arm 31; Produce feedback signal during through the high face 36 of the step of second pivoted arm 35; Feed back the information that puts in place, the notice rotating platform control system is taked brake measure, realizes that electricity is spacing.
When turntable was in 0 ° of position, collision block 7 touched with the inner side surface of first pivoted arm 31 of switch block 3 mutually, and this moment, switch block 3 contacted with contact switch 1, and contact switch 1 is connected.When turntable was begun to be rotated counterclockwise by 0 ° of position, first pivoted arm 31 that collision block 7 is stirred switch block 3 turned clockwise it, and switch block 3 breaks away from contact switch 1, and contact switch 1 breaks off, inform rotating platform control system rotating part 30 be in 0 °～+ the α scope in; When rotating part 30 was rotated counterclockwise to spacing position, counterclockwise electric limit sensors 10 produced feedback signal through the high face 36 of step of second pivoted arm 35 of switch block 3, feeds back the information that puts in place, and the notice control system is taked brake measure, realizes that electricity is spacing.If fail braking in time for a certain reason, collision block 7 will bump against spring compression leg 21, and spring compression leg 21 compression damping springs 22 absorb energy, realize soft spacingly, avoid impacting.Then, collision block 7 turns clockwise with rotating part 30.When rotating part 30 goes to 0 ° of position clockwise; Clockwise electric limit sensors 6 is through the step bottom surface 37 of second pivoted arm 35 of switch block 3; Do not produce feedback signal, second pivoted arm 35 that collision block 7 is stirred switch block 3 makes it be rotated counterclockwise 90 °, and switch block 3 contacts with contact switch 1; Contact switch 1 is connected, inform control system rotating part 30 be in-α～0 ° scope in.When rotating part 30 went to spacing position clockwise, clockwise electric limit sensors 6 produced feedback signal through the high face 33 of step of first pivoted arm 31 of switch block 3, feeds back the information that puts in place, and the notice control system is taked brake measure, realizes that electricity is spacing.If fail braking in time for a certain reason, collision block 7 will bump against spring compression leg 11, and spring compression leg 11 compression damping springs 12 absorb energy, realize soft spacingly, avoid impacting.
Claims (6)
1. a turntable slewing limit mechanism is characterized in that comprising switch block (3), fixed base (5), collision block (7); Said switch block (3) is made up of orthogonal first pivoted arm (31) and second pivoted arm (35), and switch block (3) flexibly connects through switch block axle (2) and fixed base (5), and the piece axle (2) that can rotate rotates in 90 ° of scopes; Collision block (7) is fixed on the edge of turntable rotating part (30), when collision block (7) is begun counterclockwise by 0 ° of position of turntable with rotating part (30) or turns clockwise, can stir switch block (3) and make its rotation; When collision block (7) when rotating to spacing position, collides first pivoted arm (31) or second pivoted arm (35) of switch block (3) with rotating part (30), realize the turntable slewing limit.
2. turntable slewing limit mechanism according to claim 1 is characterized in that also comprising contact switch (1); Said contact switch (1) is fixed on the fixed base (5); When first pivoted arm (31) when being in substantially horizontal, switch block (3) does not contact with contact switch (1), and contact switch (1) breaks off; When first pivoted arm (31) when being in Vertical direction, switch block (3) contacts with contact switch (1), and contact switch (1) is connected.
3. turntable slewing limit mechanism according to claim 1 and 2 is characterized in that first pivoted arm (31) of said switch block (3) and the outside fixed installation elastic buffering mechanism of second pivoted arm (35).
4. turntable slewing limit mechanism according to claim 3, the elastic buffering mechanism that it is characterized in that being installed on first pivoted arm (31) is made up of spring compression leg (11), damping spring (12), compression leg nut (13); Be processed with through hole (34) on first pivoted arm (31), compression leg nut (13) is stuck in that the inner shoulder (41) of through hole (34) is located and is threaded with part that spring compression leg (11) stretches into through hole (34); Damping spring (12) is set between spring compression leg (11) end and first pivoted arm (31) outer side surface.
5. turntable slewing limit mechanism according to claim 4, the elastic buffering mechanism that it is characterized in that being installed on second pivoted arm (35) is identical with elastic buffering mechanism structure on first pivoted arm (31).
6. turntable slewing limit mechanism according to claim 1 is characterized in that also comprising clockwise electric limit sensors (6) and counterclockwise electric limit sensors (10); First pivoted arm (31) of switch block (3) and the end face of second pivoted arm (35) are step surface; Clockwise electric limit sensors (6) and counterclockwise electric limit sensors (10) are fixed in the both sides of collision block (7); And the radial position of clockwise electric limit sensors (6) is corresponding with the high face of step (33) position of first pivoted arm (31), and the radial position of counterclockwise electric limit sensors (10) is corresponding with the high face of step (36) position of second pivoted arm (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104090516A CN102493985A (en) | 2011-12-09 | 2011-12-09 | Rotary limiting mechanism for turntable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104090516A CN102493985A (en) | 2011-12-09 | 2011-12-09 | Rotary limiting mechanism for turntable |
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| CN102493985A true CN102493985A (en) | 2012-06-13 |
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| CN2011104090516A Pending CN102493985A (en) | 2011-12-09 | 2011-12-09 | Rotary limiting mechanism for turntable |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042397A (en) * | 2012-12-27 | 2013-04-17 | 中国船舶重工集团公司第七二三研究所 | Electrical rotary table limiting mechanism with rotary angle range not exceeding 360 degrees |
| CN103395726A (en) * | 2013-07-23 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | 360-540DEG rotation limit mechanism for vertical turntable |
| CN103573910A (en) * | 2012-08-10 | 2014-02-12 | 上海新跃仪表厂 | Large-buffer multi-angle limiting mechanism for simulation turntable |
| CN104061951A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Over 360-degree rotation limiting mechanism of two-dimensional tracking rotary table |
| 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 |
| CN106155102A (en) * | 2015-03-31 | 2016-11-23 | 北京航天计量测试技术研究所 | Turntable based on Multi-sensor Fusion is spacing, speed-limiting protection system |
| CN106354164A (en) * | 2016-11-29 | 2017-01-25 | 中国科学院长春光学精密机械与物理研究所 | Rotation limiting device for azimuth axis of small-sized optical telescope |
| CN110488482A (en) * | 2019-09-09 | 2019-11-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of photo-electric telescope and its 720 ° of limiting devices of turntable |
| CN110630862A (en) * | 2019-09-23 | 2019-12-31 | 中国电子科技集团公司第三十八研究所 | Electromechanical limiting mechanism of rotary table with rotation angle range of 0 ~ +/-360 degrees |
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| CN101699221A (en) * | 2009-11-05 | 2010-04-28 | 中国科学院长春光学精密机械与物理研究所 | Limiting mechanism of rotary table capable of rotating within 360 DEG |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573910B (en) * | 2012-08-10 | 2016-04-06 | 上海新跃仪表厂 | A kind of large buffering Multi-angle limit mechanism of artificial rotary table |
| CN103573910A (en) * | 2012-08-10 | 2014-02-12 | 上海新跃仪表厂 | Large-buffer multi-angle limiting mechanism for simulation turntable |
| CN103042397A (en) * | 2012-12-27 | 2013-04-17 | 中国船舶重工集团公司第七二三研究所 | Electrical rotary table limiting mechanism with rotary angle range not exceeding 360 degrees |
| CN103042397B (en) * | 2012-12-27 | 2015-01-07 | 中国船舶重工集团公司第七二三研究所 | Electrical rotary table limiting mechanism with rotary angle range not exceeding 360 degrees |
| CN103395726A (en) * | 2013-07-23 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | 360-540DEG rotation limit mechanism for vertical turntable |
| CN103395726B (en) * | 2013-07-23 | 2015-06-10 | 中国科学院长春光学精密机械与物理研究所 | 360-540DEG rotation limit mechanism for vertical turntable |
| CN104061951B (en) * | 2014-06-05 | 2016-08-17 | 中国科学院西安光学精密机械研究所 | Over 360-degree rotation limiting mechanism of two-dimensional tracking rotary table |
| CN104061951A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Over 360-degree rotation limiting mechanism of two-dimensional tracking rotary table |
| 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 |
| CN106155102A (en) * | 2015-03-31 | 2016-11-23 | 北京航天计量测试技术研究所 | Turntable based on Multi-sensor Fusion is spacing, speed-limiting protection system |
| CN106155102B (en) * | 2015-03-31 | 2019-02-01 | 北京航天计量测试技术研究所 | Turntable limit based on Multi-sensor Fusion, speed-limiting protection system |
| 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 |
| CN106354164A (en) * | 2016-11-29 | 2017-01-25 | 中国科学院长春光学精密机械与物理研究所 | Rotation limiting device for azimuth axis of small-sized optical telescope |
| CN110488482A (en) * | 2019-09-09 | 2019-11-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of photo-electric telescope and its 720 ° of limiting devices of turntable |
| CN110630862A (en) * | 2019-09-23 | 2019-12-31 | 中国电子科技集团公司第三十八研究所 | Electromechanical limiting mechanism of rotary table with rotation angle range of 0 ~ +/-360 degrees |
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Application publication date: 20120613 |