CN101789330B - Mechanical rotational angle super acceleration switching device - Google Patents
Mechanical rotational angle super acceleration switching device Download PDFInfo
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- CN101789330B CN101789330B CN 201010130636 CN201010130636A CN101789330B CN 101789330 B CN101789330 B CN 101789330B CN 201010130636 CN201010130636 CN 201010130636 CN 201010130636 A CN201010130636 A CN 201010130636A CN 101789330 B CN101789330 B CN 101789330B
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Abstract
The invention relates to a mechanical rotational angle super acceleration switching device. External rotation is introduced through a main shaft, a cylindrical cam is installed on the main shaft and forms a hinge pair together with the main shaft, a cam follower and the curved surface of the cylindrical cam form a space cam pair, a driven rod is restrained and is always parallel to the axial direction of the main shaft and a driven disc and the cam follower are respectively fixed at two ends of the driven rod; the driven rod or the driven disc and the main shaft are connected through a sliding sleeve to form an axial sliding pair together; a travel switch is arranged on a stand and match with the driven disc and two ends of an elastic component are respectively connected with the main shaft and the cylindrical cam/the driven disc. In the invention, angular acceleration is converted into displacement by using a mechanical mode, the travel switch is triggered to alarm when the acceleration reaches a set value, and the set value can be adjusted through the weight of the cylindrical cam, the characteristic parameter of the elastic component and/or the position of the travel switch. The design is skillful, economical and reliable, has wide application and can protect a lifted object at the initial uncontrollable stage.
Description
Technical field
The present invention relates to the velocity measuring device technical field, particularly Angular Acceleration measurement mechanism technical field specifically refers to a kind of mechanical rotational angle super acceleration switching device, switch that especially can the hazard recognition angular acceleration.
Background technology
At present, known rotating shaft angular velocity measurement device is mainly electronic type, the angular speed of measuring by electronic type can calculate angular acceleration, does not also have in the market independently mechanical rotational angle acceleration measurement device, does not more have independently mechanical rotational angle super acceleration switching device.
And as protective device; because the reliability aspect, present bit is portative to be moved up and down, particularly large-scale potential energy load; as in numerous tackling system such as harbour, shipyard, mine mine, construction machine installation, elevator, all use the Mechanical measurement safety guard.The rotating shaft measurement mechanism of current tackling system only has mechanical type angular velocity measurement device, and the angle overspeed switch that develops thus.Its effect is to send alarm signal to brake apparatus when the rotating shaft rotating speed of tackling system is too high, and then brake apparatus is started working.
But after potential energy system hardover failure, weight tenesmus out of control, weight begins to drive system's rotating shaft and rotates; In fault early stage, although weight has high decline acceleration, system's rotating shaft also has high angle of rotation acceleration, and this moment, the weight decrease speed was not high, and system's rotating shaft rotating speed is not high yet, so overspeed switch can not identify fault and occurs; Therefore, for this class problem, the overspeed switch low-response, by the time it detects when the rotating shaft rotating speed of tackling system is too high to send alarm signal to brake apparatus, this moment, the movement velocity of the weight that tackling system promotes was high, braking moment and energy be very large (kinetic energy is directly proportional with velocity squared) all, often overburden work and fragile and lost efficacy of brake apparatus, the system that has is because the restriction of structure, its brake apparatus can only be braked static load, and can't satisfy for the dynamic load mechanism of large impact itself, at this moment will cause major accident, the fatal crass.So current tackling system, particularly heavy lifting system, the safety guard of depending merely on overspeed switch is defective.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, a kind of mechanical rotational angle super acceleration switching device is provided, this mechanical rotational angle super acceleration switching device adopts mechanical system to change angular acceleration the displacement of into indication part, and when acceleration reaches set point, trigger travel switch and report to the police, this designs ingenious compactness, and is simple in structure, economical reliable, applicable wide, can send rapidly warning to lifting by crane the thing initial stage out of control.It is a kind of Novel safety protection device.
To achieve these goals, mechanical rotational angle super acceleration switching device of the present invention adopts following technical scheme:
This mechanical rotational angle super acceleration switching device, be characterized in, comprise main shaft, elastomeric element, cylindrical cam, at least two Cam Followers, follower lever with described Cam Follower equal number, clutch plate, travel switch and support, described main shaft rotatably is installed in and is used for importing into external rotating in the described support, described cylindrical cam is installed on the described main shaft and consists of hinges with described main shaft, the cam curved surface Special composition cam of described Cam Follower and described cylindrical cam is secondary, described clutch plate and described Cam Follower are fixed respectively in described follower lever and described main shaft axially parallel and two ends, described follower lever is removable and axially slidably be socketed on the described main shaft and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft at the spacing or described clutch plate of the relatively described main shaft of described main shaft longitudinal direction along described main shaft axial direction, described travel switch is arranged on the described support and is equipped with described clutch plate, and described elastomeric element two ends connect respectively described main shaft and described cylindrical cam/clutch plate.
Above-mentioned " being equipped with " refers to when described cam curved surface promotes described Cam Follower and moves vertically, and then promotes vertically mobile certain displacement of described clutch plate, will contact with travel switch, triggers travel switch work, and travel switch sends alarm signal.
Preferably, described Cam Follower is provided with clutch shaft bearing, and described clutch shaft bearing is against the cam curved surface of described cylindrical cam, thereby friction is rolling friction between described Cam Follower and the described cam curved surface.
Preferably, described elastomeric element is at least one scroll spring, and described main shaft and described cylindrical cam are fixed respectively in the two ends of described scroll spring.
More preferably, the number of described scroll spring is at least 2, and one of described at least scroll spring is opposite with the swirl direction of all the other described scroll springs.
Preferably, described elastomeric element is Compress Spring, and the two ends of described Compress Spring are respectively against described main shaft and described clutch plate.
More preferably, described mechanical rotational angle super acceleration switching device also comprises the adjustment tightening nut, and described adjustment tightening nut is installed on the described main shaft, described main shaft by described adjustment tightening nut against described Compress Spring.
More preferably, the indicatrix of described cam curved surface is with respect to described follower lever and plane, described main shaft place and is symmetrical arranged or asymmetric setting.Can design as required.
Preferably, described travel switch is self-resetting switch or manual reset switch.
Preferably, described travel switch has some normally opened contacts and some normally-closed contacts.
More preferably, described mechanical rotational angle super acceleration switching device also comprises the second bearing, and described cylindrical cam is installed on the described main shaft by described the second bearing.
Preferably, described mechanical rotational angle super acceleration switching device also comprises at least one sliding sleeve, described sliding sleeve is fixed in the described clutch plate and is set on the described main shaft, and described clutch plate axially slidably is socketed on the described main shaft and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft by described sliding sleeve.
Preferably, described mechanical rotational angle super acceleration switching device comprises at least two sliding sleeves, described sliding sleeve be fixed on described main shaft or the structure that connects firmly with described main shaft on, removable and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft axial direction by described axle sleeve thereby described follower lever is located in the described axle sleeve.
More preferably, described sliding sleeve is linear bearing, slide-and-guide axle sleeve, ball-type guideway or ball spline.
Preferably, described mechanical rotational angle super acceleration switching device also comprises balancing disk, and described balancing disk is fixed on the described cylindrical cam.
More preferably, described balancing disk hollow, described main shaft wears wherein.
Preferably, described main shaft is two shafts or single shaft.Thereby can utilize out axle head to connect external rotating and import mechanical rotational angle super acceleration switching device into by main shaft.
Preferably, described mechanical rotational angle super acceleration switching device changes angular acceleration the displacement of into indication part, and when acceleration reaches set point, trigger travel switch and report to the police, described set point can be adjusted by the characterisitic parameter of the weight of adjusting described cylindrical cam, described elastomeric element and/or the position of described travel switch.
Beneficial effect of the present invention is specific as follows:
1, the present invention adopts mechanical system Angular Acceleration to be changed into the displacement of clutch plate, and when reaching certain value, acceleration triggers travel switch, send alarm signal, design ingenious, owing to be to detect Angular Acceleration, send rapidly alarm signal in the time of can be out of control in system, the response time is short, reliability is high, has greatly improved Security of the system;
2, the present invention includes main shaft, support, elastomeric element, Cam Follower, cylindrical cam, follower lever, clutch plate and travel switch, volume is little, and is simple in structure;
3, the present invention has the very large scope of application; particularly large-scale potential energy load; as in numerous tackling system such as harbour, shipyard, mine mine, construction machine installation, elevator, play the effect of safeguard protection, also can be used for the place that other need to carry out the angular acceleration monitoring.
Description of drawings
Fig. 1 is the schematic perspective view of first specific embodiment of the present invention.
Fig. 2 is the cross-sectional schematic of specific embodiment shown in Figure 1.
Fig. 3 is the schematic perspective view of second specific embodiment of the present invention.
Fig. 4 is the cross-sectional schematic of specific embodiment shown in Figure 3.
Fig. 5 is the schematic perspective view of the 3rd specific embodiment of the present invention.
Fig. 6 is the cross-sectional schematic of specific embodiment shown in Figure 5.
Fig. 7 is the schematic perspective view of the 4th specific embodiment of the present invention.
Fig. 8 is the cross-sectional schematic of specific embodiment shown in Figure 7.
Embodiment
In order more clearly to understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Example one
See also Fig. 1～shown in Figure 2, what Fig. 1～Fig. 2 showed is first specific embodiment of mechanical rotational angle super acceleration switching device of the present invention, comprise main shaft 1, support 2, scroll spring 4, two Cam Followers 5, cylindrical cam 6, the second bearing 7, two follower levers 8, clutch plate 9, sliding sleeve 10 and travel switch 11, extraneous rotation is imported into by the described main shaft 1 that rotatably is installed in the described support 2, described cylindrical cam 6 is installed on the described main shaft 1 by described the second bearing 7 and consists of hinges with described main shaft 1, described Cam Follower 5 is installed on the described follower lever 8 with cam curved surface 15 Special composition cams pair and its rotating shaft of described cylindrical cam 6, described follower lever 8 is tied and fixes respectively described clutch plate 9 and described Cam Follower 5 with described main shaft 1 axially parallel and two ends all the time, thereby link and described main shaft 1 formation moving sets by described sliding sleeve 10 between described clutch plate 9 and described main shaft, described sliding sleeve 10 is fixed on that both are integrated on the described clutch plate 9, thereby described clutch plate 9 axially slidably is socketed on the described main shaft 1 and spacing at the relatively described main shaft of described main shaft 1 longitudinal direction 1 along described main shaft 1, described travel switch 11 is arranged on the described support 2 and is equipped with described clutch plate 9, and described scroll spring 4 two ends connect respectively described main shaft 1 and described cylindrical cam 6.
Above-mentioned " being equipped with " refers to when described cam curved surface 15 promotes described Cam Follower 5 and moves vertically, and then promote vertically mobile certain displacement of described clutch plate 9, to contact with travel switch 11, and trigger travel switch 11 work, travel switch 11 sends alarm signal.
Such as Fig. 1～shown in Figure 2, in a specific embodiment of the present invention, described Cam Follower 5 is provided with the clutch shaft bearing (not shown), described clutch shaft bearing is against the cam curved surface 15 of described cylindrical cam 6, thereby the friction between described Cam Follower 5 and the described cam curved surface 15 is rolling friction.
Preferably, the number of described scroll spring 4 is at least 2, and one of described at least scroll spring 4 is opposite with the swirl direction of all the other described scroll springs 4.That is, two scrollwork bullet 4 springs can be arranged, scroll spring 4 one ends are fixed on the main shaft 1, and the other end is fixed on the cylindrical cam 6, and the swirl direction of these two scroll springs 4 is opposite.Three and above scroll spring 4 also can be arranged, and scroll spring 4 one ends are fixed on the main shaft 1, and the other end is fixed on the cylindrical cam 6, have at least the swirl direction of a scroll spring 4 opposite with other scroll spring 4.Such as Fig. 1～shown in Figure 2, in a specific embodiment of the present invention, the number of described scroll spring 4 is 2, and the swirl direction of two scroll springs 4 is opposite.
Preferably, the indicatrix of described cam curved surface 15 can design as required with respect to described follower lever 8 and plane, described main shaft 1 place, can be to be symmetrical arranged, and also can be non-being symmetrical arranged.Such as Fig. 1～shown in Figure 2, in a specific embodiment of the present invention, the indicatrix of described cam curved surface 15 is with respect to described follower lever 8 and plane, described main shaft 1 place and is symmetrical arranged, like this, the cam curved surface 15 of cylindrical cam 6 so that main shaft 1 no matter angular acceleration is arranged between up time or counterclockwise angular acceleration, can both promote follower lever 8 and move to equidirectional; Different cam curves can be arranged, main shaft 1 angular acceleration and follower lever 8 displacement relations that different cam curves is corresponding different.
Described travel switch 11 can be self-resetting switch, also can be manual reset switch.Described travel switch 11 has normally opened contact and normally-closed contact, and each number of contacts is any.
Preferably, described sliding sleeve 10 is slide-and-guide axle sleeve, ball-type guideway or ball spline.Shown in Fig. 1～2, in a specific embodiment of the present invention, described sliding sleeve 10 is slide-and-guide axle sleeves.
Preferably, described mechanical rotational angle super acceleration switching device also comprises balancing disk 3, and described balancing disk 3 is fixed on the described cylindrical cam 6.Shown in Fig. 1～2, in a specific embodiment of the present invention, described balancing disk 6 hollows, described main shaft 1 wears wherein.
Preferably, described main shaft 1 can be two shafts, can be single shaft also, guarantees to have one to bring out axle and can connect external rotating and import angle super acceleration switching device into by main shaft.If external rotating also needs to connect other parts in certain applications, such as overspeed switch, encoder etc., at this moment, may need the super acceleration switch in angle that two shafts are arranged.Shown in Fig. 1～2, in a specific embodiment of the present invention, described main shaft 1 is two shafts.
When main shaft 1 beginning angle accelerated to rotate, because cylindrical cam 6 is hinged with main shaft 1, cylindrical cam 6 began to rotate relative to main shaft 1 because of the existence of moment of inertia; Because 1 on cylindrical cam 6 and main shaft link by scroll spring 4, so the rotational angle of cylindrical cam 6 relative main shafts 1 is larger, then scroll spring 4 is out of shape greatlyr, and cylindrical cam 6 angle of rotation acceleration are larger; Reach one regularly when cylindrical cam 6 and main shaft 1 relatively rotate angle, it is identical with the angular acceleration of main shaft 1 that the distortion of scroll spring 4 reaches the angular acceleration that makes cylindrical cam 6, and device reaches balance point; Because follower lever 8 connects firmly with clutch plate 9 and sliding sleeve 10, sliding sleeve 10 does not relatively rotate with main shaft 1, so follower lever 8 does not relatively rotate with main shaft 1; When cylindrical cam 6 when main shaft 1 rotates, also rotates relative to follower lever 8 simultaneously, so the Cam Follower 5 that is installed on the follower lever 8 moves along the cam curved surface 15 of cylindrical cam 6, and drive clutch plate 9 relative main shafts 1 move vertically; When the angle of main shaft 1 acceleration figure reached certain value, clutch plate 9 relative main shafts 1 moved vertically and also reach certain value and trigger travel switch 11 work, and travel switch 11 sends alarm signal; Balancing disk 3 is fixedly connected with cylindrical cam 6, and balancing disk 3 can be regarded the part of cylindrical cam 6 as, can change the moment of inertia of cylindrical cam 6 by the moment of inertia that changes balancing disk 3, triggers the required angular acceleration of travel switch 11 work thereby adjust.
Example two
See also Fig. 3～shown in Figure 4, example two is distortion of example one, basically identical with the specific embodiment shown in Fig. 1～2, identical parts adopt identical Reference numeral, example two is compared with example one has increased sleeve base 14, it is the liter that prolongs of main shaft 1 that described sleeve base 14 is fixed on the described main shaft 1, described sliding sleeve 10 is installed on the described sleeve base 14, described follower lever 8 passes described sliding sleeve 10, described follower lever 8 be subjected to described sliding sleeve 10 constraint and can only be along the axial motion of parallel described main shaft 1.
Preferably, the quantity of described sliding sleeve 10 is identical with described follower lever 8 quantity.
Example three
Example three sees also Fig. 5～shown in Figure 6, example three is another kind distortion of example one, basically identical with the specific embodiment shown in Fig. 1～2, identical parts adopt identical Reference numeral, the specific embodiment that Fig. 5～6 show and the difference of the specific embodiment shown in Fig. 1～2 are, Compress Spring 13 has replaced the function of scroll spring 4 in the example one in the example three, also comprise and adjust tightening nut 12, the two ends of described Compress Spring 13 are respectively against described main shaft 1 and described clutch plate 9, described adjustment tightening nut 12 is installed on the described main shaft 1, against described Compress Spring 13, described Compress Spring 13 also is resisted against on the sliding sleeve 10 of fixing with described clutch plate 9 described main shaft 1 by described adjustment tightening nut 12.
When main shaft 1 beginning angle accelerated to rotate, because cylindrical cam 6 just connects by the second bearing 7 with main shaft 1, the assembly of cylindrical cam 6 and balancing disk 3 began to rotate relative to main shaft 1 because of the existence of moment of inertia; Because follower lever 8 connects firmly with clutch plate 9 and sliding sleeve 10, sliding sleeve 10 does not relatively rotate with main shaft 1, so follower lever 8 does not relatively rotate with main shaft 1; When cylindrical cam 6 when main shaft 1 rotates, also rotates relative to follower lever 8 simultaneously, so the Cam Follower 5 that is installed on the follower lever 8 moves along the cam curved surface 15 of cylindrical cam 6, and drive clutch plate 9 relative main shafts 1 move vertically; Clutch plate 9 can compress described Compress Spring 13 during along main shaft 1 axial motion, and the angular acceleration of main shaft 1 is larger, and then the decrement of 9 pairs of Compress Springs 13 of clutch plate is larger; The reaction elastic force of Compress Spring 13 is applied on the cylindrical cam 6 along sliding sleeve 10, clutch plate 9, follower lever 8, Cam Follower 5, makes 6 jiaos of accelerated motions of cylindrical cam; Produce the angular acceleration values of angular acceleration values and main shaft 1 when identical when the elastic force of Compress Spring 13 makes cylindrical cam 6, device reaches balance point; When the angle of main shaft 1 acceleration figure reached certain extreme value, clutch plate 9 relative main shafts 1 moved vertically and also reach certain value and trigger travel switch 11 work after the of short duration response time of process, and travel switch 11 sends alarm signal; Balancing disk 3 is fixedly connected with cylindrical cam 6, and balancing disk 3 can be regarded the part of cylindrical cam 6 as, and the moment of inertia that the moment of inertia by changing balancing disk 3 can variable cylindrical cam 6 triggers the required angular acceleration of travel switch 11 work thereby adjust; Adjust tightening nut 12 and be installed on the main shaft 1, can advance or retreat and adjust the pretightning force of Compress Spring 13 along main shaft 1 axial screw, trigger the required angular acceleration of travel switch 11 work thereby adjust.
Example four
Example four sees also Fig. 7～shown in Figure 8, example four can be regarded as the combination of example two and example three, identical parts adopt identical Reference numeral, it is equivalent to increase sleeve base 14 on the basis of example three, it is the liter that prolongs of main shaft 1 that described sleeve base 14 is fixed on the described main shaft 1, described sliding sleeve 10 is installed on the described sleeve base 14, and described follower lever 8 passes described sliding sleeve 10, described follower lever 8 be subjected to described sliding sleeve 10 constraint and can only be along the axial motion of parallel described main shaft 1.The operation principle of example four can reference example two and example three.
Preferably, the quantity of described sliding sleeve 10 is identical with described follower lever 8 quantity.
Angle super acceleration switching device of the present invention not only can be used for the angular acceleration of tackling system to be measured and safeguard protection, also can be used for the place that other needs the angular acceleration monitoring.During concrete the use, main shaft 1 of the present invention connects with the arbitrary rotating shaft of tackling system (or other systems that need to monitor) by shaft coupling.The present invention adopts mechanical system to change Angular Acceleration the displacement of indication part into, and triggers travel switch 11 when acceleration reaches set point, sends alarm signal, can find rapidly that fault has occured and sends alarm signal.Set point can be adjusted by the weight (can adjust balancing disk 3 weight in specific embodiment) of cylindrical cam 6, the characterisitic parameter of elastomeric element (scroll spring 4 or Compress Spring 13), the position of adjusting tightening nut 12 and/or the position of travel switch 11.When brake mechanism received the signal that the present invention's (also can be described as super angle acceleration switch) sends, system was in its kinetic energy of fault early period of origination and little, so brake mechanism can be worked the continuation of the system failure of prevention effectively.Like this, sending rapidly alarm signal in the time of can be out of control in system, greatly improved Security of the system, is a kind of Novel safety protection device.Particularly large-scale potential energy load as in numerous tackling system such as harbour, shipyard, mine mine, construction machine installation, elevator, is played the effect of safeguard protection, also can be used for the place that other need to carry out the angular acceleration monitoring.Its volume is little, and is simple in structure, reliability is high, the response time is short, and the very large scope of application is arranged.
To sum up, mechanical rotational angle super acceleration switching device of the present invention adopts mechanical system to change Angular Acceleration the displacement of indication part into, and triggers travel switch when acceleration reaches certain value; send alarm signal; design ingeniously, send rapidly alarm signal in the time of can be out of control in system, greatly improved Security of the system; it is a kind of Novel safety protection device; volume is little, and is simple in structure, and reliability is high; response time is short, and is applied widely.
In this specification, the present invention is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (17)
1. mechanical rotational angle super acceleration switching device, it is characterized in that, comprise main shaft, elastomeric element, cylindrical cam, at least two Cam Followers, follower lever with described Cam Follower equal number, clutch plate, travel switch and support, described main shaft rotatably is installed in and is used for importing into external rotating in the described support, described cylindrical cam is installed on the described main shaft and consists of hinges with described main shaft, the cam curved surface Special composition cam of described Cam Follower and described cylindrical cam is secondary, described clutch plate and described Cam Follower are fixed respectively in described follower lever and described main shaft axially parallel and two ends, described follower lever is removable and axially slidably be socketed on the described main shaft and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft at the spacing or described clutch plate of the relatively described main shaft of described main shaft longitudinal direction along described main shaft axial direction, described travel switch is arranged on the described support and is equipped with described clutch plate, and described elastomeric element two ends connect respectively described main shaft and described cylindrical cam/clutch plate; Described being equipped with refers to that to promote described Cam Follower mobile vertically when described cam curved surface, and then promotes vertically mobile certain displacement of described clutch plate, will contact with travel switch, triggers travel switch work, and travel switch sends alarm signal.
2. mechanical rotational angle super acceleration switching device according to claim 1, it is characterized in that, described Cam Follower is provided with clutch shaft bearing, described clutch shaft bearing is against the cam curved surface of described cylindrical cam, thereby the friction between described Cam Follower and the described cam curved surface is rolling friction.
3. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described elastomeric element is at least one scroll spring, and described main shaft and described cylindrical cam are fixed respectively in the two ends of described scroll spring.
4. mechanical rotational angle super acceleration switching device according to claim 3 is characterized in that, the number of described scroll spring is at least 2, and one of described at least scroll spring is opposite with the swirl direction of all the other described scroll springs.
5. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described elastomeric element is Compress Spring, and the two ends of described Compress Spring are respectively against described main shaft and described clutch plate.
6. mechanical rotational angle super acceleration switching device according to claim 5, it is characterized in that, described mechanical rotational angle super acceleration switching device also comprises the adjustment tightening nut, described adjustment tightening nut is installed on the described main shaft, described main shaft by described adjustment tightening nut against described Compress Spring.
7. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, the indicatrix of described cam curved surface is with respect to described follower lever and plane, described main shaft place and is symmetrical arranged or asymmetric setting.
8. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described travel switch is self-resetting switch or manual reset switch.
9. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described travel switch has some normally opened contacts and some normally-closed contacts.
10. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described mechanical rotational angle super acceleration switching device also comprises the second bearing, and described cylindrical cam is installed on the described main shaft by described the second bearing.
11. mechanical rotational angle super acceleration switching device according to claim 1, it is characterized in that, described mechanical rotational angle super acceleration switching device also comprises at least one sliding sleeve, described sliding sleeve is fixed in the described clutch plate and is set on the described main shaft, and described clutch plate axially slidably is socketed on the described main shaft and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft by described sliding sleeve.
12. mechanical rotational angle super acceleration switching device according to claim 1, it is characterized in that, described mechanical rotational angle super acceleration switching device comprises at least two sliding sleeves, described sliding sleeve is fixed on the structure that connects firmly with main shaft, and is removable and spacing at the relatively described main shaft of described main shaft longitudinal direction along described main shaft axial direction by described sliding sleeve thereby described follower lever is located in the described sliding sleeve.
13. according to claim 11 or 12 described mechanical rotational angle super acceleration switching devices, it is characterized in that described sliding sleeve is linear bearing, slide-and-guide axle sleeve, ball-type guideway or ball spline.
14. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described mechanical rotational angle super acceleration switching device also comprises balancing disk, and described balancing disk is fixed on the described cylindrical cam.
15. mechanical rotational angle super acceleration switching device according to claim 14 is characterized in that, described balancing disk hollow, and described main shaft wears wherein.
16. mechanical rotational angle super acceleration switching device according to claim 1 is characterized in that, described main shaft is two shafts or single shaft.
17. according to claim 1～12, each described mechanical rotational angle super acceleration switching device in 14～16, it is characterized in that, described mechanical rotational angle super acceleration switching device changes angular acceleration the displacement of into indication part, and when acceleration reaches set point, trigger described travel switch and report to the police, described set point can be adjusted by the characterisitic parameter of the weight of adjusting described cylindrical cam, described elastomeric element and/or the position of described travel switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010130636 CN101789330B (en) | 2010-03-23 | 2010-03-23 | Mechanical rotational angle super acceleration switching device |
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| CN 201010130636 CN101789330B (en) | 2010-03-23 | 2010-03-23 | Mechanical rotational angle super acceleration switching device |
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| CN101789330A CN101789330A (en) | 2010-07-28 |
| CN101789330B true CN101789330B (en) | 2013-03-27 |
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| CN102122590B (en) * | 2010-12-12 | 2015-10-14 | 郑超 | Mechanical slide block type angle super acceleration switching device |
| CN107706064B (en) * | 2017-11-16 | 2019-07-12 | 佳质集团有限公司 | A kind of mutually campaign-styled breaker arc extinguishing mechanism |
| CN108680768B (en) * | 2018-06-28 | 2020-08-21 | 北京理工大学 | A method and device for detecting the angular acceleration of a rotating body |
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| US3776368A (en) * | 1971-12-13 | 1973-12-04 | A Brauss | Overspeed and positioning device for a shaft |
| US3911237A (en) * | 1973-03-23 | 1975-10-07 | Nippon Denso Co | Rotating speed detecting device |
| CN1328953A (en) * | 2001-07-23 | 2002-01-02 | 连云港中海集装箱码头有限公司 | Superacceleration protection device |
| CN201725728U (en) * | 2010-03-23 | 2011-01-26 | 上海能港电气工程科技有限公司 | Mechanical rotating spindle angle super-accelerating switch device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101789330A (en) | 2010-07-28 |
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