CN102262976B - Centrifugal switch - Google Patents
Centrifugal switch Download PDFInfo
- Publication number
- CN102262976B CN102262976B CN 201010186363 CN201010186363A CN102262976B CN 102262976 B CN102262976 B CN 102262976B CN 201010186363 CN201010186363 CN 201010186363 CN 201010186363 A CN201010186363 A CN 201010186363A CN 102262976 B CN102262976 B CN 102262976B
- Authority
- CN
- China
- Prior art keywords
- centrifugal
- depression bar
- push rod
- assembly
- housed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
The invention discloses a centrifugal switch; the centrifugal switch comprises a shell (1), a centrifugal component (2), a compressive bar component (3), a microswitch (4) and an electric connector (5) which are arranged inside the shell (1); the centrifugal component (2), the compressive bar component (3) and the microswitch (4) are arranged on the same axis of the shell (1); and the microswitch (4) is connected with the electric connector (5). The centrifugal switch effectively solve a key technology of converting a high rotating speed into an electric signal, can be applied to high speed working equipment such as starters of airplanes and the like, can timely and accurately convert a high rotating speed mechanical signal into the electric signal, has the characteristics of reasonable structure, compactness, novelty and the like and is worth of market promotion.
Description
Technical field
The present invention relates to a kind of centrifugal switch that the tach signal of high-speed rotating machine can be converted to the signal of telecommunication.
Background technology
Starter for aircraft, need reach a high rotating speed ability normal starting, after arriving this working speed, continue again rising such as rotating speed and then can cause damage to starter, need this moment an effective device make starter after reaching working speed promptly and accurately send the signal of telecommunication, the prompting pilot closes motivation.The working speed of starter is up to more than 40,000 rpm, the electromechanical equipment of conventional tachogenerator and so on can't bear so high rotating speed, and by extensive investigation, domestic also do not have suitable device can realize this function at present, need to rely on pilot's artificial judgment, accuracy is relatively poor.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of centrifugal switch.This centrifugal switch can with the rotating speed of high-speed rotating machine promptly and accurately be converted into the signal of telecommunication, when the starter rotating speed is too high on the aircraft, can the automatic alarm pilot close motivation.
For solving the problems of the technologies described above, technical scheme of the present invention: a kind of centrifugal switch, comprise housing and be installed in housing interior centrifugal assembly, depression bar assembly, sensitive switch and electric connector, described centrifugal assembly, depression bar assembly, depression bar assembly, sensitive switch are installed on the same axis of housing, during work, centrifugal assembly acts on the depression bar assembly, and the depression bar assembly acts on sensitive switch, and sensitive switch is connected with electric connector.。
In the above-mentioned centrifugal switch, described centrifugal assembly comprises gear shaft, centrifugal-block and push rod; Gear one end of gear shaft is meshed with starter reduction device, and axle head is locked with locking nut, at the axle bumper of gear shaft bearing is housed; Centrifugal-block is installed in the inner chamber of gear shaft, is contained in installation sleeve and bearing pin at centrifugal-block, and push rod connects centrifugal-block, at push rod spring is housed.
In the aforesaid centrifugal switch, described depression bar assembly comprises fixed cover, depression bar and swivel nut, is subjected to the push rod effect of centrifugal assembly during depression bar work; Swivel nut acts on the contact of sensitive switch; Between depression bar and swivel nut, little spring is housed.
In the aforesaid centrifugal switch, at fixed cover O type circle is housed; At depression bar cushion rubber and trim ring are housed.
Design principle of the present invention: object is made circular motion can produce the dorsad centrifugal force of rotation center direction, centrifugal force F=m ω
2
R, wherein m is mass of object, and ω is angular speed, and r is radius of turn.Rotatablely move and be converted into centrifugal force, and centrifugal force and rotating speed are proportional, and the centrifugal force that produces in the time of then can managing to make dangerous rotating speed is converted into the action force of certain actuating type sensitive switch and equates, under dangerous rotating speed, touch sensitive switch, make rotating speed finally be converted into the signal of telecommunication.
Beneficial effect of the present invention: compared with prior art, the present invention can be converted into the signal of telecommunication accurately with the dangerous rotating speed of starter, drives to the starting interlocking relay, lights the red colored lamp of " the dangerous rotating speed of starter ", reminds the pilot to close motivation.The present invention is rational in infrastructure, compact, novel, effectively solved the key technology that high rotating speed is converted into the signal of telecommunication, it is sensitive, reliable to realize that tach signal transmission and signal transmit, structure is ingenious reliable, except being applied on the airplane starter, can also extensive use on the equipment of high speed operation, be worth marketing.
Description of drawings
Fig. 1 is complete machine structure figure of the present invention;
Fig. 2 is the structural representation of centrifugal assembly of the present invention;
Fig. 3 is the structural representation of depression bar assembly of the present invention.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Embodiment
Embodiment 1.As shown in Figure 1, mainly comprise housing 1 and be installed in centrifugal assembly 2, depression bar assembly 3, sensitive switch 4 and electric connector 5 in the housing 1 that housing 1 is structural member, all spare parts all are installed on wherein, and its profile should be considered in the starter mounting interface.Centrifugal assembly 2, depression bar assembly 3, depression bar assembly 3 and sensitive switch 4 are installed on the housing 1 same axis, during work, centrifugal assembly 2 acts on depression bar assembly 3, and depression bar assembly 3 acts on sensitive switch 4, and the contact of sensitive switch 4 is connected with two-end-point on the electric connector 5.When sensitive switch 4 triggered, inner reed change was connected circuit, sends signal.As shown in Figure 2, centrifugal assembly 2 comprises gear shaft 6, centrifugal-block 10 and push rod 11; Gear one end of gear shaft 6 is meshed with starter reduction device, at the axle bumper of gear shaft 6 two bearings 7 is housed; Axle bumper supports two bearings, 7 location, the stability under guaranteeing to run up.Centrifugal-block 10 is installed in the inner chamber of gear shaft 6, is contained in installation sleeve 8 and bearing pin 9 at centrifugal-block 10, and push rod 11 connects centrifugal-block 10, pad one spring 12 between push rod 11 and gear shaft 6, and axle head is locked with locking nut 13.Installation sleeve 8 plays a part to support centrifugal-block 10 with bearing pin 9, and the radial centrifugal force on the centrifugal-block 10 is converted to axial thrust, acts on push rod 11.Push rod 11 adopts copper product more wear-resisting and that coefficient of friction is lower to make.As shown in Figure 3, depression bar assembly 3 comprises fixed cover 14, depression bar 15 and swivel nut 16, and fixed cover 14 plays a part to support and fixing whole depression bar assembly 3, and depression bar 15 adopts Steel material, and carry out nitriding on the surface and process, be subjected to push rod 11 effects of centrifugal assembly 2 during depression bar 15 work; Depression bar 15 is connected with the push rod 11 of centrifugal assembly 2, forms the minimum anti abrasive friction pair of coefficient of friction with push rod 11; Swivel nut 16 connects the contact of sensitive switch 4; For anti-throw-out lever 11 and depression bar 15 at a high speed lower rigidity frictions, in depression bar 15 and 16 pads of swivel nut, one little spring, 17 bufferings.At fixed cover 14 O type circle 18 is housed; At depression bar 15 cushion rubber 19 and trim ring 20 are housed, O type circle 18, cushion rubber 19 etc. are obturator, and trim ring 20 plays fixedly cushion rubber 19 and depression bar 15.
The course of work of the present invention: as shown in Figure 1, rotating speed of transmission shaft on the starter passes on the gear shaft 6 of centrifugal switch by decelerator, centrifugal-block 10 is installed in and is rotated together motion on the gear shaft 6, and produce centrifugal force radially, fulcrum by bearing pin 9, produce axial component, when rotating speed arrived dangerous rotating speed, this active force overcame the elastic force of spring 12, promoted push rod 11, push rod 11 acts on the depression bar 15, overcome the elastic force of little spring 17, promote swivel nut 16, swivel nut 16 touches sensitive switch 4 contacts, sensitive switch 4 is connected, spread out of the signal of telecommunication to electric connector 5; After closing motivation, rotating speed descends, and centrifugal force reduces, and spring 12 elastic force promote centrifugal-block 10 and return to reset condition.So, form a duty cycle.
Embodiments of the present invention are not limited to above-described embodiment, and the various variations of making under the prerequisite that does not break away from aim of the present invention all belong within protection scope of the present invention.
Claims (3)
1. centrifugal switch, comprise housing (1) and be installed in housing (1) interior centrifugal assembly (2), depression bar assembly (3), sensitive switch (4) and electric connector (5), described centrifugal assembly (2), depression bar assembly (3) and sensitive switch (4) are installed on the same axis of housing (1), sensitive switch (4) is connected with electric connector (5), and described centrifugal assembly (2) comprises gear shaft (6), centrifugal-block (10) and push rod (11); Gear one end of gear shaft (6) is meshed with starter reduction device, and axle head is equipped with bearing (7) with locking nut (13) locking at the axle bumper of gear shaft (6); Centrifugal-block (10) is installed in the inner chamber of gear shaft (6), at centrifugal-block (10) installation sleeve (8) and bearing pin (9) is housed, and push rod (11) connects centrifugal-block (10), at push rod (11) spring (12) is housed; It is characterized in that: described push rod (11) adopts copper product more wear-resisting and that coefficient of friction is lower to make.
2. centrifugal switch according to claim 1, it is characterized in that: described depression bar assembly (3) comprises fixed cover (14), depression bar (15) and swivel nut (16), depression bar (15) adopts Steel material, and carry out nitriding on the surface and process, be subjected to push rod (11) effect of centrifugal assembly (2) during depression bar (15) work, depression bar (15) is connected with the push rod (11) of centrifugal assembly (2), forms the minimum anti abrasive friction pair of coefficient of friction with push rod (11); Swivel nut (16) acts on the contact of sensitive switch (4); Between depression bar (15) and swivel nut (16), little spring (17) is housed.
3. centrifugal switch according to claim 2 is characterized in that: at described fixed cover (14) O type circle (18) is housed; At depression bar (15) cushion rubber (19) and trim ring (20) are housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186363 CN102262976B (en) | 2010-05-31 | 2010-05-31 | Centrifugal switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010186363 CN102262976B (en) | 2010-05-31 | 2010-05-31 | Centrifugal switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102262976A CN102262976A (en) | 2011-11-30 |
| CN102262976B true CN102262976B (en) | 2013-10-30 |
Family
ID=45009574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010186363 Expired - Fee Related CN102262976B (en) | 2010-05-31 | 2010-05-31 | Centrifugal switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102262976B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1910245A (en) * | 1931-12-31 | 1933-05-23 | Hobart Mfg Co | Centrifugal switch |
| CN87204614U (en) * | 1987-09-18 | 1988-05-25 | 薛祚国 | Multi speed and contact type mechanic centrifugal relay |
| CN2405306Y (en) * | 1999-12-15 | 2000-11-08 | 姚宝宝 | Centrifugal switch |
| CN201673858U (en) * | 2010-05-31 | 2010-12-15 | 中国江南航天工业集团林泉电机厂 | Centrifugal switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57196432A (en) * | 1981-05-27 | 1982-12-02 | Tsurumi Mfg | Starter for single-phase induction motor for underwater motor driven pump or like |
| JPS6226164U (en) * | 1985-07-29 | 1987-02-17 | ||
| JPH0512770Y2 (en) * | 1986-08-29 | 1993-04-02 |
-
2010
- 2010-05-31 CN CN 201010186363 patent/CN102262976B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1910245A (en) * | 1931-12-31 | 1933-05-23 | Hobart Mfg Co | Centrifugal switch |
| CN87204614U (en) * | 1987-09-18 | 1988-05-25 | 薛祚国 | Multi speed and contact type mechanic centrifugal relay |
| CN2405306Y (en) * | 1999-12-15 | 2000-11-08 | 姚宝宝 | Centrifugal switch |
| CN201673858U (en) * | 2010-05-31 | 2010-12-15 | 中国江南航天工业集团林泉电机厂 | Centrifugal switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102262976A (en) | 2011-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203009154U (en) | Mechanical overspeed protection device of hydroelectric generating set | |
| CN201133422Y (en) | Bearing clearance automatic regulating apparatus | |
| CN201703954U (en) | Speed measurement and strip breakage protection device for escalator and moving pavement | |
| CN102262976B (en) | Centrifugal switch | |
| CN201367328Y (en) | Overspeed protection device for winch | |
| CN201673858U (en) | Centrifugal switch | |
| CN205474440U (en) | Engagement type clutch of washing machine tooth | |
| CN104176188A (en) | Mechanical-type automatic bicycle safety speed limiting device | |
| CN204553053U (en) | A kind of multifunctional water turbine monitoring running state device | |
| CN210001365U (en) | speed limiter | |
| CN201650614U (en) | Wind generator with centrifugal clutch | |
| CN202721552U (en) | Loss of power braking structure of motor | |
| CN209262113U (en) | Slip clutch | |
| CN106978704A (en) | A kind of washing machine tooth mesh type clutch device | |
| CN203884234U (en) | Parking and braking linkage mechanism | |
| CN103935338B (en) | Brake device driving mechanism | |
| CN103168568A (en) | Automatic braking device | |
| CN202883831U (en) | Speeding braking device | |
| CN201846184U (en) | Construction lifter motor with centrifugal brake device | |
| CN101969249B (en) | Construction lifter motor with centrifugal braking device | |
| CN203348374U (en) | Taper type automatic clutch | |
| CN202657856U (en) | Secondary loop master controller for construction lift | |
| CN103441610B (en) | A kind of braking motor | |
| CN201473138U (en) | Novel positive and negative two-way overspeed protection anti-falling triggering device | |
| CN203034249U (en) | Speed reduction clutch and braking system of frequency conversion washing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20180531 |