CN103176481A - Rotation limiting device - Google Patents
Rotation limiting device Download PDFInfo
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- CN103176481A CN103176481A CN2013100605870A CN201310060587A CN103176481A CN 103176481 A CN103176481 A CN 103176481A CN 2013100605870 A CN2013100605870 A CN 2013100605870A CN 201310060587 A CN201310060587 A CN 201310060587A CN 103176481 A CN103176481 A CN 103176481A
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Abstract
The invention discloses a rotation limiting device. The rotation limiting device is used for limiting a rotational angle of a rotary shaft which is driven by a motor to rotate around an axis. The rotation limiting device comprises a first shifting plate, a second shifting plate, a first tact switch and a fixed portion; the fixed portion is fixedly arranged on the motor and does not rotate along with the rotary shaft; the first shifting plate can synchronously rotate along with the rotary shaft and is provided with a first rotating portion and a first protruded portion, the first rotating portion is clamped on the rotary shaft, and the first protruded portion extends from the first rotating portion; the second shifting plate can be driven by the first protruded portion to rotate around the rotary shaft and is provided with a second rotating portion, a shifting portion and a second protruded portion, the second rotating portion encircles the rotary shaft, the shifting portion extends from the second rotating portion and can be driven by the first protruded portion, and the second protruded portion extends from the second rotating portion and can press the first tact switch; and the first tact switch is arranged on the fixed portion and controls interruption of power supply for the motor when the first tact switch is pressed by the second protruded portion, so that the rotary shaft stops rotating. The rotation limiting device has the advantage that the rotation limiting device is provided with the tact switch, so that the rotational angle of the rotary shaft can be safely controlled.
Description
Technical field
The present invention relates to stop means, particularly relate to a kind of rotary limit device of the anglec of rotation for limiting the rotating shaft of being rotated by driven by motor.
Background technology
Radio telescope is to observe and study basic equipment from the radio wave of celestial body.The high sensitivity of radio telescope requires it to build in the quiet area of electric wave environmental abnormality, and select these locations to need special electric wave enviromental monitoring equipment, requirement obtains detailed environmental data on 360 degree, require the directional antenna of high-gain and make its automatic rotation and can not be wound around control cables and radio-frequency cable, therefore, the maximum anglec of rotation need to be limited between 360 degree and 720 degree.The stop means of existing limiting rotation angle, sensitivity and security performance are difficult to satisfy the demand, if the operation failure of limiting rotation angle, often easily because cable is wound around the damage that causes radio-frequency cable, control cables, power lead etc., the mast that even will set up test antenna forgets about it.
Summary of the invention
The invention provides a kind of rotary limit device, with safety, limiting rotation angle delicately.For achieving the above object, the present invention adopts following technical scheme:
A kind of rotary limit device disclosed by the invention, the anglec of rotation of the rotating shaft of rotating around an axis for limiting by driven by motor, this device comprises: the first plectrum, the second plectrum, the first touch-switch and fixed part.
This fixed part is fixedly installed on motor and does not rotate with this rotating shaft; This first plectrum can synchronously rotate with this rotating shaft, has the first rotation section of being placed in this rotating shaft and the first teat of extending to form of this first rotation section certainly; This second plectrum can be driven by this first teat and rotate around this rotating shaft, has the second rotation section around this rotating shaft, the clicking section that extends to form from this second rotation section and can be driven by this first teat, and extend to form from this second rotation section and can press the second teat of this first touch-switch; This first touch-switch is arranged at this fixed part, when this first touch-switch is pressed by this second teat, controls this motor outage, and this rotating shaft is stopped operating.
Wherein, this device further comprises resetting means; This resetting means is connected in this second rotation section and this fixed part, is used for controlling this second rotation section and resetting when this second rotation section is driven rotation and motor outage by this first plectrum.
Wherein, this second teat, form away from the radially extension of this rotating shaft from this second rotation section, the distance between this first touch-switch and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis.
Wherein, this device further comprises second touch-switch.This second touch-switch is arranged at this fixed part, be arranged at intervals this second teat both sides with this first touch-switch, distance between this second touch-switch and axis, less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis; When this second touch-switch is pressed by this second teat, control this motor outage, this rotating shaft is stopped operating.
Wherein, this device further comprises the first relay and the second relay.This first relay is electrically connected on this first touch-switch, and the first touch-switch is controlled the first relay; This second relay is electrically connected on this second touch-switch, and the second touch-switch is controlled the second relay; This first relay connects with the normal-closed end substring connection that is connected the second relay, and supplies with power supply and connect, and is the servo circuit power supply of this motor.
Wherein, this device further comprises the first photoelectric tube and the second photoelectric tube.This first photoelectric tube is arranged between this second teat and this first touch-switch, comprises the first optical transmitting set and the first optical receiver that arrange along the axially spaced-apart of this rotating shaft; This second photoelectric tube is arranged between this second teat and this second touch-switch, comprises the second optical transmitting set and the second optical receiver that arrange along the axially spaced-apart of this rotating shaft; Distance between this first optical transmitting set and the first optical receiver and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis; Distance between this second optical transmitting set and the second optical receiver and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis.
Wherein, this device also comprises a controller that is electrically connected on this motor.This first optical transmitting set and this second optical transmitting set are infrared transmitter; This first optical receiver and this second optical receiver are infrared receiver, and are electrically connected on this controller; Between this first optical transmitting set and the first optical receiver or this second teat between this second optical transmitting set and the second optical receiver the time, this controller sends order and controls this motor and stop operating when this second teat.
Wherein, this resetting means is the spring that is connected in this second rotation section and this fixed part, and the tie point of this resetting means and this second rotation section and this second teat are symmetrical with respect to axis.
Wherein, this first rotation section is the annulus that is placed in this rotating shaft, and this first teat is the projection that forms to extension away from this rotating shaft leading thread from this first rotation section; This second rotation section is to be placed on the annulus of this rotating shaft with being parallel to this first rotation section, and this clicking section is from this second rotation section, along the prominent bar of axially giving prominence to of this rotating shaft.
Wherein, this rotating shaft comprises the cylindrical body of rod centered by this axis, and by the outstanding protruding key that forms of the sidewall of the cylindrical body of rod; This first rotation section is the annulus that is placed in this rotating shaft, have with the perforation of the dimensional fits in the cross section of the cylindrical body of rod and with the hole clipping of the dimensional fits in the cross section of protruding key, this first teat is the projection that forms to extension away from this rotating shaft leading thread from this first rotation section; This second rotation section is to be placed on the annulus of this rotating shaft with being parallel to this first rotation section, has the perforation with the dimensional fits in the cross section of the cylindrical body of rod, and the radius of the second rotation section is greater than the radius of this first rotation section and greater than the ultimate range of this first teat and this rotating shaft; This clicking section is the prominent bar of giving prominence to along this axis direction from this second rotation section, can be driven by this first teat; This first teat is between this clicking section and this first touch-switch; This fixed part comprises circular chassis and the sidewall of the annular that extends to form along rotor shaft direction from chassis edge, and this chassis has the perforation with the dimensional fits in the cross section of the cylindrical body of rod; This first relay, this second relay, this first optical transmitting set and this second optical transmitting set are fixedly installed on this fixed part; This resetting means is the spring that is connected in the sidewall of this second rotation section and this fixed part, and the tie point of this resetting means and this second rotation section and this second teat are symmetrical with respect to rotating shaft.
The beneficial effect of the embodiment of the present invention is: by the cooperation of the first touch-switch and the second teat, and limiting rotating angle very safely, and the cooperation by the first teat and clicking section, limiting rotation angle.
Description of drawings
The stereographic map of a kind of rotary limit device that Fig. 1 provides for preferred embodiment of the present invention;
The cut-open view of a kind of rotary limit device that Fig. 2 provides for preferred embodiment of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail.
The stereographic map of a kind of rotary limit device that Fig. 1 provides for preferred embodiment of the present invention.The cut-open view of a kind of rotary limit device that Fig. 2 provides for preferred embodiment of the present invention.The anglec of rotation of the rotating shaft 90 that rotary limit device of the present invention rotates around an axis L for restriction is driven by the motor (not shown), comprise the first plectrum 1, the second plectrum 2, the first touch-switch 3 and fixed part 8, and the second touch-switch 4, the first photoelectric tube 5, the second photoelectric tube 6 and resetting means 7.
Wherein, this fixed part 8 is fixedly installed on motor and does not rotate with this rotating shaft 90, plays simultaneously the effect of fixing the first touch-switch 3, the second touch-switch 4, the first photoelectric tube 5, the second photoelectric tube 6 and resetting means 7.
The first plectrum 1 can synchronously rotate with rotating shaft 90, has the first rotation section 11 of being placed in this rotating shaft 90 and the first teat 12 of extending to form of this first rotation section 11 certainly.The second plectrum 2 can be driven by this first teat 12 and rotate around this rotating shaft 90, has the second rotation section 21 around this rotating shaft 90, the clicking section 22 that extends to form from this second rotation section 21 and can be driven by this first teat 12, and extend to form from this second rotation section 21 and can press the second teat 23 of this first touch-switch 3.This first touch-switch 3 is arranged at this fixed part 8, when this first touch-switch 3 is pressed by this second teat 23, can control this motor outage, and this rotating shaft 90 is stopped operating.
More specifically, the rotating shaft 90 among the present embodiment comprises the cylindrical body of rod 91 centered by this axis L, and by the outstanding protruding key 92 that forms of the sidewall of the cylindrical body of rod 91.This first rotation section 11 is for being placed in the annulus of this rotating shaft 90, have with the perforation 111 of the dimensional fits in the cross section of the cylindrical body of rod 91 and with the hole clipping 112 of the dimensional fits in the cross section of protruding key.The present embodiment matches by hole clipping 112 and protruding key 92 and makes the first plectrum 1 synchronously to rotate with rotating shaft 90.
The second rotation section 21 is for to be parallel to the annulus that these 11 ground, the first rotation section are placed on this rotating shaft 90, has the perforation with the dimensional fits in the cross section of the cylindrical body of rod 91, makes the second plectrum 2 90 to rotate around the shaft.And the radius of the second rotation section 21 greater than the radius of this first rotation section 11 and greater than the ultimate range of this first teat 12 with this axis L, can be avoided first teat touching the first touch-switch 3.
This fixed part 8 comprises circular chassis 81 and the sidewall 82 of the annular that 81 edge extends to form along the direction of rotating shaft 90 from the chassis, and this chassis 81 has the perforation with the dimensional fits in the cross section of the cylindrical body of rod 91.
Among the present embodiment, resetting means 7 is connected in this second rotation section 21 and this fixed part 8, is used for controlling this second rotation section 21 and resetting when this second rotation section 21 is driven rotation and motor outage by this first plectrum 1.Because the second rotation section 21 is driven by the first plectrum 1 and rotates and the first touch-switch 3 when being pressed by the second teat 23, can control this motor outage, this rotating shaft 90 is stopped operating.Therefore, by resetting means 7 is set, can make motor when outage, make the second plectrum 2 be returned to initial position, this device reset mode that mediates.
More specifically, resetting means among the present embodiment 7 is for being connected in the spring of this second rotation section 21 and the sidewall 82 of this fixed part 8, and the tie point of resetting means 7 and this second rotation section 21 and this second teat 23 are with respect to rotating shaft 90 symmetries.Certainly, the spring among the present embodiment is extension spring.
The second teat 23 among the present embodiment, form to extension away from these rotating shaft 90 leading threads from this second rotation section 21, distance between this first touch-switch 3 and axis L is less than the outward flange of the second teat 23 and the distance between axis L, greater than the outward flange of this first plectrum 1 and the distance between axis L, can so that 3 meetings of the first touch-switch by the second teat 23 touching and can standby the first plectrum 1 touching.
Preferably, the device of the present embodiment further comprises second touch-switch 4.The second touch-switch 4 is arranged at fixed part 8, be arranged at intervals the both sides of the second teat 23 with the first touch-switch 3, similar with the first touch-switch 3, distance between the second touch-switch 4 and axis L, less than the outward flange of the second teat 23 and the distance between axis L, greater than the outward flange of this first plectrum 1 and the distance between axis L; When the second touch-switch 4 is pressed by the second teat 23, control the motor outage, rotating shaft 90 is stopped operating.By the second touch-switch 4 is set, can be when the motor Double-directional rotary, can control equally the angle that rotating shaft is rotated on two rotation directions, concrete maximal angle value can be by the anglec of rotation between the first teat 12 and clicking section 22 poor control of the anglec of rotation between poor and the second teat 23 and the first touch-switch 3, the second touch-switch 4.
In addition, rotary limit device comprises the first relay 31 and the second relay 41.Wherein, the first relay 31 is electrically connected on the first touch-switch 3, the first touch-switchs 3 and controls the first relay 31; The second relay 41 is electrically connected on the second touch-switch 4, the second touch-switchs 4 and controls the second relay 41; The first relay 31 be connected the normal-closed end substring connection of relay 41 and connect, and supply with power supply and connect, be that the servo circuit of motor is powered.Therefore, as long as the terminal of a relay often becomes open, feed circuit disconnect, and cut off the power supply to the motor servo circuit.
The first photoelectric tube 5 is arranged between this second teat 23 and this first touch-switch 3, comprises along the first optical transmitting set and first optical receiver of the interval setting of axis L direction.Distance between the first optical transmitting set and the first optical receiver and axis L is less than the edge of the second teat outer 23 and the distance between axis L, greater than the outward flange of the first plectrum 1 and the distance between axis L.
The second photoelectric tube 6 is arranged between this second teat 23 and this second touch-switch 4, comprises along the second optical transmitting set and second optical receiver of this axis direction interval setting.Distance between the second optical transmitting set and the second optical receiver and axis L is less than the distance between the second teat 23 outward flanges and axis L, greater than the outward flange of this first plectrum 1 and the distance between axis L.
The first relay 31, the second relay 41, the first photoelectric tube 5 and the second photoelectric tube 6 are fixedly installed on fixed part 8.If take the second teat 23 as benchmark, be in the outside of two infrared tubes a bit, symmetrical two touch-switchs are installed, in the outside of touch-switch a bit, symmetrical two relays are installed.
Device among this enforcement also comprises a controller that is electrically connected on this motor.The first optical transmitting set and the second optical transmitting set are infrared transmitter, and the first optical receiver and the second optical receiver are infrared receiver, and are electrically connected on this controller.Between the first optical transmitting set and the first optical receiver or the second teat 23 between the second optical transmitting set and the second optical receiver the time, this controller sends order and controls this motor and stop operating when the second teat 23.Particularly, not between the first optical transmitting set and the first optical receiver also not between the second optical transmitting set and the second optical receiver the time, the first optical receiver and the second optical receiver can receiving infrared-rays when the second teat 23; When the second teat 23 was between the first optical transmitting set and the first optical receiver, the first optical receiver can not receiving infrared-ray; When the second teat 23 was between the second optical transmitting set and the second optical receiver, the second optical receiver can not receiving infrared-ray.When the first optical receiver or the second optical receiver can not receiving infrared-rays, represent that the second teat 23 is between the first optical transmitting set and the first optical receiver or between the second optical transmitting set and the second optical receiver, control motor and stop operating this moment, equally can limiting rotation angle.further, during the motor single direction rotation, rotary limit device of the present invention, thereby be poor by the anglec of rotation between the first teat 12 and clicking section 22 and the second teat 23 and the first touch-switch 3 between the anglec of rotation of the poor anglec of rotation restriction rotating shaft that limits the first plectrum of the anglec of rotation, the forward that namely rotates along rotating shaft 90, poor both sums of the anglec of rotation between the anglec of rotation between the first teat 12 and clicking section 22 poor and the second teat 23 and the first touch-switch 3, be the angle of the maximum possible of rotating shaft forward rotation, can be set to greater than 360 degree less than 720 degree, equally, during the motor bidirectional rotation, thus be poor by the anglec of rotation between the first teat 12 and clicking section 22 and the second teat 23 and the first touch-switch 3, the second touch-switch 4 between the poor anglec of rotation that limits the anglec of rotation restriction rotating shaft of the first plectrum of the anglec of rotation.By touch-switch and infrared tube are set simultaneously, the twice electronic limit is provided, improved stability and the reliability of application of installation.
Below illustrate the flow process when rotary limit device of the present invention is applied to antenna rotating platform.
In conjunction with Fig. 1, Fig. 2 as can be known, when the antenna turntable turns clockwise, the first plectrum holding will turn clockwise along with rotating shaft on protruding key, when from initial position rotation approximately after a circle (approximately 360 degree);
Further, the first teat of the first plectrum will be encountered the prominent bar on the second plectrum;
Further, first plectrum drive the second plectrum rotates together;
Further, motor is rotation still, and the second teat of the second plectrum is being driven together with the second plectrum and is rotating;
Further, motor is rotation still, and during opening by the first photoelectric tube, in the first photoelectric tube, the light of the first optical transmitting set emission is blocked, and the first optical receiver receiving end can not receive utilizing emitted light and causes state to change;
Further, the signal of the first optical receiver state change is sent to controller;
Further, controller sends to order and stops motor movement by servo circuit;
Further, if the first optical receiver is inoperative, motor is rotation still, cross the reach of the first photoelectric tube when the second teat of the second plectrum, and still rotation of motor can not be stopped, and the second teat of the second plectrum will be encountered the first touch-switch;
Further, the first touch-switch is with closure, and the first touch-switch is controlled the first relay;
Further, the first relay is after the closure signal of receiving the first touch-switch, because the connection of two relays is that normal-closed end substring connection with two relays connects, and the power supply of the servo circuit take this connected mode as motor, when the first relay terminal become often open after, these feed circuit will disconnect, and cut off the power supply to the motor servo circuit.
When the antenna turntable is rotated counterclockwise, the first plectrum holding will be rotated counterclockwise along with rotating shaft on protruding key, when rotate some angles (about several years) from initial position after;
Further, the first teat of the first plectrum will be encountered the prominent bar on the second plectrum;
Further, first plectrum drive the second plectrum rotates together;
Further, motor is rotation still, and the second teat of the second plectrum is being driven together with the second plectrum and is rotating;
Further, motor is rotation still, and during opening by the second photoelectric tube, in the second photoelectric tube, the light of the second optical transmitting set emission is blocked, and the second optical receiver receiving end can not receive utilizing emitted light and causes state to change;
Further, the signal of the second optical receiver state change is sent to controller;
Further, controller sends to order and stops motor movement by servo circuit;
Further, if the second optical receiver is inoperative, motor is rotation still, cross the reach of the second photoelectric tube when the second teat of the second plectrum, and still rotation of motor can not be stopped, and the second teat of the second plectrum will be encountered the second touch-switch;
Further, the second touch-switch is with closure, and the second touch-switch is controlled the second relay;
Further, the second relay is after the closure signal of receiving the second touch-switch, because the connection of two relays is that normal-closed end substring connection with two relays connects, and the power supply of the servo circuit take this connected mode as motor, when the second relay terminal become often open after, these feed circuit will disconnect, and cut off the power supply to the motor servo circuit.
To sum up, after forward (clockwise) anglec of rotation of turntable is spent greater than 360, then stop through certain angle motor rotation, to avoid being connected to the cable winding on antenna.
Embodiments of the invention have advantages of following:
(1) driving the second plectrum by the first plectrum rotates, the second teat of the second plectrum presses described touch-switch, the control motor stops operating, can control safely the maximum rotation angle of rotating shaft, can not cause the radio-frequency cable and the control cables that are connected to rear end equipment by antenna to be wound around;
(2) second plectrums only can rotate within the specific limits, and when not being subject to External Force Acting, can reset by resetting means, make the second teat be positioned at the intermediate reset state;
(3) by touch-switch and photoelectric tube are set, provide the twice angle spacing, stability and the reliability of application of installation are high
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. a rotary limit device, is characterized in that, the anglec of rotation of the rotating shaft that this device rotates around an axis for limiting by driven by motor, and this device comprises: the first plectrum, the second plectrum, the first touch-switch and fixed part;
This fixed part is fixedly installed on motor and does not rotate with this rotating shaft;
This first plectrum can synchronously rotate with this rotating shaft, has the first rotation section of being placed in this rotating shaft and the first teat of extending to form of this first rotation section certainly;
This second plectrum can be driven by this first teat and rotate around this rotating shaft, has the second rotation section around this rotating shaft, the clicking section that extends to form from this second rotation section and can be driven by this first teat, and extend to form from this second rotation section and can press the second teat of this first touch-switch;
This first touch-switch is arranged at this fixed part, when this first touch-switch is pressed by this second teat, controls this motor outage, and this rotating shaft is stopped operating.
2. device according to claim 1, is characterized in that, this device further comprises resetting means;
This resetting means is connected in this second rotation section and this fixed part, is used for controlling this second rotation section and resetting when this second rotation section is driven rotation and motor outage by this first plectrum.
3. device according to claim 2, is characterized in that,
This second teat, form to extension away from this rotating shaft leading thread from this second rotation section, distance between this first touch-switch and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis.
4. device according to claim 3, is characterized in that, this device further comprises second touch-switch,
This second touch-switch is arranged at this fixed part, be arranged at intervals this second teat both sides with this first touch-switch, distance between this second touch-switch and axis, less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis; When this second touch-switch is pressed by this second teat, control this motor outage, this rotating shaft is stopped operating.
5. device according to claim 4, is characterized in that, this device further comprises the first relay and the second relay;
This first relay is electrically connected on this first touch-switch, and the first touch-switch is controlled the first relay; This second relay is electrically connected on this second touch-switch, and the second touch-switch is controlled the second relay; This first relay connects with the normal-closed end substring connection that is connected the second relay, and supplies with power supply and connect, and is the servo circuit power supply of this motor.
6. device according to claim 5, is characterized in that, this device further comprises the first photoelectric tube and the second photoelectric tube;
This first photoelectric tube is arranged between this second teat and this first touch-switch, comprises along the first optical transmitting set and first optical receiver of this axis direction interval setting;
This second photoelectric tube is arranged between this second teat and this second touch-switch, comprises along the second optical transmitting set and second optical receiver of this axis direction interval setting;
Distance between this first optical transmitting set and the first optical receiver and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis; Distance between this second optical transmitting set and the second optical receiver and axis is less than the distance between the second teat outward flange and axis, greater than the outward flange of this first plectrum and the distance between axis.
7. device according to claim 6, is characterized in that, this device also comprises a controller that is electrically connected on this motor;
This first optical transmitting set and this second optical transmitting set are infrared transmitter;
This first optical receiver and this second optical receiver are infrared receiver, and are electrically connected on this controller;
Between this first optical transmitting set and the first optical receiver or this second teat between this second optical transmitting set and the second optical receiver the time, this controller sends order and controls this motor and stop operating when this second teat.
8. the described device of arbitrary claim of according to claim 2 to 7, is characterized in that,
This resetting means is the spring that is connected in this second rotation section and this fixed part, and the tie point of this resetting means and this second rotation section and this second teat are symmetrical with respect to axis.
9. the described device of arbitrary claim of according to claim 1 to 7, is characterized in that,
This first rotation section is the annulus that is placed in this rotating shaft, and this first teat is the projection that forms to extension away from this rotating shaft leading thread from this first rotation section;
This second rotation section is to be placed on the annulus of this rotating shaft with being parallel to this first rotation section, and this clicking section is from this second rotation section, along the outstanding prominent bar of this axis direction.
10. device according to claim 7, is characterized in that,
This rotating shaft comprises the cylindrical body of rod centered by this axis, and by the outstanding protruding key that forms of the sidewall of the cylindrical body of rod;
This first rotation section is the annulus that is placed in this rotating shaft, have with the perforation of the dimensional fits in the cross section of the cylindrical body of rod and with the hole clipping of the dimensional fits in the cross section of protruding key, this first teat is the projection that forms to extension away from this rotating shaft leading thread from this first rotation section;
This second rotation section is to be placed on the annulus of this rotating shaft with being parallel to this first rotation section, has the perforation with the dimensional fits in the cross section of the cylindrical body of rod, and the radius of the second rotation section is greater than the radius of this first rotation section and greater than the ultimate range of this first teat and this axis; This clicking section is the prominent bar of giving prominence to along this axis direction from this second rotation section, can be driven by this first teat; This first teat is between this clicking section and this first touch-switch;
This fixed part comprises circular chassis and the sidewall of the annular that extends to form along rotor shaft direction from chassis edge, and this chassis has the perforation with the dimensional fits in the cross section of the cylindrical body of rod;
This first relay, this second relay, this first photoelectric tube and this second photoelectric tube are fixedly installed on this fixed part;
This resetting means is the spring that is connected in the sidewall of this second rotation section and this fixed part, and the tie point of this resetting means and this second rotation section and this second teat are symmetrical with respect to rotating shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310060587.0A CN103176481B (en) | 2013-02-26 | 2013-02-26 | A kind of rotary limit device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310060587.0A CN103176481B (en) | 2013-02-26 | 2013-02-26 | A kind of rotary limit device |
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| CN103176481A true CN103176481A (en) | 2013-06-26 |
| CN103176481B CN103176481B (en) | 2016-02-24 |
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| CN107949990B (en) * | 2015-06-25 | 2021-06-15 | 艾尔斯潘网络公司 | Rotatable antenna apparatus |
| CN107949990A (en) * | 2015-06-25 | 2018-04-20 | 艾尔斯潘网络公司 | Rotary antenna equipment |
| CN106217367A (en) * | 2016-08-30 | 2016-12-14 | 艾狄工业设计（深圳）有限公司 | A kind of robot turns to precise positioning mechanism |
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| CN108120463A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | Position-limit mechanism |
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| CN109307979A (en) * | 2017-07-28 | 2019-02-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of curtain seam focal plane shutter and breadth signal detection mechanism |
| CN107917762A (en) * | 2017-12-15 | 2018-04-17 | 广州飒特红外股份有限公司 | Thermal infrared imager and its menu selecting method |
| CN109248989A (en) * | 2018-10-12 | 2019-01-22 | 深圳思创达自动化设备有限公司 | A kind of wax-pattern manufacturing equipment |
| CN109872373A (en) * | 2019-03-27 | 2019-06-11 | 武汉工程大学 | A kind of adjustable rotary platform for binocular vision calibration plate |
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