CN203607265U - Large-power anti-vibration high-stability electromechanical integrated converter - Google Patents
Large-power anti-vibration high-stability electromechanical integrated converter Download PDFInfo
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- CN203607265U CN203607265U CN201320561240.XU CN201320561240U CN203607265U CN 203607265 U CN203607265 U CN 203607265U CN 201320561240 U CN201320561240 U CN 201320561240U CN 203607265 U CN203607265 U CN 203607265U
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Abstract
Disclosed is an electromechanical integrated drive large-power anti-vibration high-stability electromechanical integrated converter. A conventional electromagnetic-coil and electromagnet drive manner of a relay is changed, and a permanent magnet latching electrical contact electrode pull-in mode of a magnetic latching relay is also changed. Simultaneous switching of multiple groups of electric change-over switches is realized by utilizing an advanced electromechanical integrated drive manner. The biggest characteristics of the large-power anti-vibration high-stability electromechanical integrated converter are in that the abilities of large-impact resistance and large-vibration resistance are greatly improved, and that electromechanical integrated drive high-reliability relay is guaranteed to run stably and reliably under harsh environment. Furthermore, the distance between electrical contact electrodes of the relay is greatly increased compared with the distance of a conventional relay, adaptable voltage is higher, withstand voltage amplitude is larger and safer, and large-power anti-vibration high-stability electromechanical integrated converter is especially suitable for being applied in a change gear motor of an electric automobile.
Description
Technical field
The utility model relates to a kind of transfer switching equipment, is particularly useful for motor winding to carry out series and parallel or mix the high-power vibration proof high stability of the one electromechanical transducer connecting.
Technical background
At present, connect by its special winding being carried out to series and parallel or mixing the technical field that realizes speed change, torque-variable (being shift motor) at permanent magnet brushless electromotor, Patents has been introduced the transfer switching equipment for the different connected modes of motor winding, these device for switching can be divided into two large types: a class is mechanically actuated operation switch, as cam controller, need manually to control its on off state; Another kind of is electric control operation switch, as power semiconductor device controllable silicon (noncontacting switch), common relay (or contactor) or magnetic latching relay, in above-mentioned involved switching theorem, can meet variable block speed change demand, but in the small space of motor, to motor winding series and parallel or mix connect concrete operations time, show deficiency in various degree, there is no operability.As: one, mechanically actuated operation switch cam controller because of its volume large, can not be arranged on motor internal, will the motor winding wire of One's name is legion, (three-phase second gear motor will be drawn 12 lines, three-phase third gear motor will be drawn 24 lines) guide to outside motor, be connected with cam controller again, the long lead-out wire of winding has not only increased the consumption of non-ferrous metal enamelled wire, and exist the resistance to produce power consumption because of these enamelled wires that increased, electric efficiency is declined, moreover cam controller assembled in motor not under, can only install outward at motor, take certain interior space.Two, the defect of power semiconductor device controllable silicon practical operation performance is: first quantity many (three-phase second gear motor needs 9, and three-phase third gear motor needs 27) totally takes up room in large, motor and can not load at all; It two is that price is high, and a controllable silicon price dozens of yuan up to standard, needs hundreds of unit even to arrive thousands of units altogether, and cost increase too much could not the market competitiveness; It three is that power consumption is many, because controllable silicon power consumption can make the overall efficiency of motor 20% left and right that declines, this highly energy-consuming product does not have the market competitiveness equally, runs counter to the new forms of energy policy that national energy-saving reduces discharging.Three, common relay (or contactor), it is slightly large that its problem is not only volume, and its working method is also worthless, because its coil of duration of work is always in "on" position, this just causes: coil resistance increases power consumption, voltage on coil is once interrupt because of power supply or line fault, and moment causes malfunction, and reliability does not ensure.Four, magnetic latching relay, this should be to be hopeful the appliance switch device that successfully uses in this technical field most, the shortcoming that need to always switch on while having overcome the coil working of common relay because of it, only need the pulse current of an a few tens of milliseconds (20～30ms) in the moment of its action, this is little power consumption (can ignore) not only, also can not cause malfunction because of power issue, but the problem of this type of device for switching is the ability of anti shock and vibration, because although it can stand general vibration, but in the time that motor application is on vehicle, the vibration that may run into is very large, at this time the magnetic confining force of relay likely cannot stand too large vibration and malfunction, affect reliably travelling of vehicle.
Summary of the invention
Connected mode series and parallel or mixing at the winding by motor connect in the technology that converts to realize the operation of motor shift, existing several device for switching all has deficiency or defect part, for overcoming these deficiencies or defect, the utility model provides a kind of high-power vibration proof high stability electromechanical transducer, have volume little, energy-conservation, at a low price, highly reliable various features, can meet the multinomial requirement of shift motor to transfer switching equipment, promote the shift motor practical new high degree of marching toward.
The utility model solves the technical scheme that its technical problem adopts: in an insulation crust, in one plane several groups of electricity change over contact electrodes are installed side by side, electric change over contact electrode is made up of moving contact electrode and fixed contact electrode.Connecting electrode driving head on moving contact electrode wherein, electrode drive head is connected with moving contact electrode STATEMENT OF FEDERALLY SPONSORED, a female connector is installed in one end of STATEMENT OF FEDERALLY SPONSORED, and electromechanical driver output screw has been installed in connector, and electromechanical driver and shell are fixed.Simultaneously, two sensitive switches have been installed in the side of connector, itself and shell are fixed, sensitive switch is for detection of two extreme positions of connector, and connector, under the rotation of electromechanical drive motors output screw, can be made reciprocal rectilinear motion, in the time reaching the extreme position of setting, corresponding sensitive switch moves and cuts off electromechanical drive motors power supply, and the rotation of screw rod is stopped, thereby the once safety that completes the contact electrode of relay is changed reliably.When the polarity of voltage that passes into when the power inleting terminal of electromechanical drive motors is reverse, the direction of rotation of its output screw, thereby make connector do rectilinear motion in the other direction, realize moving contact electrode fixed contact electrode contact or the separation different from its two sides, complete the switching motion process of the contact electrode of the high-power vibration proof high stability electromechanical transducer of electromechanical driving.
The conversion action time analysis of contact electrode of the high-power vibration proof high stability electromechanical transducer that electromechanical drives: the conversion action time of this contact electrode depends on pitch, the gear ratio of decelerator of electromechanical driver and the rotating speed of the motor of electromechanical driver of the output screw of range, the driver of moving contact electrode.When having determined that the conversion action time of contact electrode is that the range of tS, moving contact electrode is after the pitch of 1mm and output screw is kmm, can calculate the switching motion of one-time contact electrode time, the rotating speed V2=1/ (kt) of the output screw of driver, if the speed reducing ratio of the decelerator of electromechanical driver is N:1, the motor speed V1=V2 × N (r/min) of electromechanical driver.Can calculate according to this according to actual needs the many groups of concrete data that vary in size.Generally, the conversion action time of the contact electrode of high-power vibration proof high stability electromechanical transducer is longer than common relay, but within being controlled at the scope of 1S, meet instructions for use, because of this kind of relay when the switching motion of contact electrode major loop in off state, in loop, there is no electric current, can not produce spark, is therefore safe and reliable.
The stability analysis of high-power vibration proof high stability electromechanical transducer anti shock and vibration: impact shock put to, likely perpendicular to moving contact electrode STATEMENT OF FEDERALLY SPONSORED, with moving contact electrode STATEMENT OF FEDERALLY SPONSORED form one be less than the angle of 90 °, parallel with moving contact electrode STATEMENT OF FEDERALLY SPONSORED, wherein the impact shock parallel with moving contact electrode STATEMENT OF FEDERALLY SPONSORED can make moving contact electrode STATEMENT OF FEDERALLY SPONSORED be subject to maximum impulsive force, if this power is from motor drive direction, fixes and inoperatively only work from the power of moving contact electrode STATEMENT OF FEDERALLY SPONSORED because of motor and shell.This power acts on by the internal thread of connector on the screw thread of output screw of driver, this power can be decomposed into perpendicular to two component screw flight side and that be parallel to screw flight, do not make the torque of screw rod rotation perpendicular to the component of screw flight side, the power that is only parallel to screw flight can form the moment to bolt rotary, just can make bolt rotary but this power will be able to overcome the greatly stiction between screw thread.In the time of variable angle between the warp-wise of screw flight side and screw rod, the relative size of above-mentioned two component can change, in the time that angle diminishes, component perpendicular to screw flight side increases, and the power that is parallel to screw flight reduces, at above-mentioned angle during in certain angle, when the power that is parallel to screw flight can not overcome the stiction between screw thread, can not make the output screw of driver rotate from the impulsive force of moving contact electrode STATEMENT OF FEDERALLY SPONSORED, just can not produce malfunction because powerful impact shock makes high-power vibration proof high stability electromechanical transducer.
The beneficial effects of the utility model are: on the one hand high-power vibration proof high stability electromechanical transducer is only at the moment demand motive electric power of moving contact electrode action, and during doing demand motive electric power not, i.e. not power consumption; Prior is on the other hand in the case of the radial angle of appropriate design driver output screw flight side and drive screw, can prevent reliably the rotation of driver output screw rod in the time that thump vibrates, avoid dynamic and static contact electrode to depart from reliable contact, can effectively avoid misoperation.Further, the distance between the noncontact contact electrode of high-power vibration proof high stability electromechanical transducer can design and produce enough greatly, and proof voltage level is improved, and reliability strengthens.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the schematic diagram of the high-power vibration proof high stability of the utility model electromechanical transducer.
Fig. 2 is the high-power vibration proof high stability of the utility model electromechanical transducer reliability principle analysis chart.
Fig. 3 is the cut-away view of high-power vibration proof high stability electromechanical transducer embodiment.
1. electric insulation shells in figure, 2. electromechanical driver, 3. driver output screw, 4. connector, 5. moving contact electrode STATEMENT OF FEDERALLY SPONSORED, 6. motor driving head, 7. moving contact electrode, 8. fixed contact electrode, 9 electrode elastic sheets, 10. power supply terminal, 11. sensitive switches, 12. simulation screw thread .13 notches.
In Fig. 1, in an electric insulation shell (1), fixedly mount electromechanical driver, electromechanical driver is made up of a motor and a decelerator, and motor is directly connected with decelerator and is encapsulated in an overall metal-back.Many groups moving contact electrode (7) and fixed contact electrode (8), electromechanical driver (2) and two sensitive switches (11) are also fixedly mounted.The inner chamber of connector (4) has internal thread, coordinate with driver output screw (3), make screw rod free to rotate and band movement connector (4) is mobile therein, in the time that connector (4) moves to extreme position, touch respectively two sensitive switches (11), thereby the power line of controlling motor makes its power-off, motor stalling, connector (4) stops mobile.Moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5) is connected with connector (4), in the time that connector (4) is mobile, drives moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5) to move together.In the time that electrode STATEMENT OF FEDERALLY SPONSORED (5) moves to the left-hand in Fig. 1, drive one group of moving contact electrode (7) extremely moving left by electrode drive head (6), elastic deformation when electrode elastic sheet (9) provides moving contact electrode (7) action, in the time that it contacts and have certain pressure with fixed contact (8), connector (4) moves to extreme position.Motor power is cut off in now sensitive switch (11) action, complete the once conversion of relay contact, the contact electrode conversion of another direction of relay is identical with said process, and just the moving direction of direction of motor rotation, motor driver output screw (3) rotation direction, connector (4) and the moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5) of electromechanical driver is contrary.
High-power vibration proof high stability electromechanical transducer anti shock and vibration stability concrete analysis
The internal thread of connector (4) acts on the screw thread of electrode drive output screw (3), and multiple screw threads interact can be with simulation screw thread (12) equivalence of an output screw (3).This simulation screw thread (12) has all born the power from connector (4).
In Fig. 2, simulation screw thread (12) is α with the radially angle of output screw (3), be F from the impulsive force of moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5), two component of F are perpendicular to respectively the power F1 of simulation screw thread (12) side and are parallel to the power F2 that simulates screw thread (12) side, and the stiction of establishing between internal thread and the output screw (3) of connector (4) is F0.Because of F
1direction and screw thread lateral vertical, can not produce the torque to screw rod, and F
2direction is parallel with flank, is the revolving force that causes that screw rod may rotate, but F
2want the stiction F0 that can overcome between screw thread just can make bolt rotary.
The calculating of impulsive force F: obtain according to formula F=ma and V=at: Vm=Ft, contact electrode gross mass 40g in the present embodiment, moving contact electrode STATEMENT OF FEDERALLY SPONSORED quality 50g, connector quality 60g, impact velocity is 120km/h, duration 1s, ignores electricity
the utmost pointthe bending deformation force needing of flexure strip (9), in data substitution formula: F=Vm/t=120 × 10
3× (40+50+60) × 10
-3/ 60 × 60=150 × 120=5N.
F as can be seen from Figure 2
1=F × cos α, F
2=F.cos α, stiction F
0=μ
0f
1, μ
0for there being the confficient of static friction between lubricated steel-steel, its value is 0.1～0.12, α=5 °, and the concrete data of substitution, can obtain: F
1=5 × cos α=0.996 × 5=5 (N), F
2=5 × 0.087=0.4 (N), F
0=μ
0f
1=μ
0.5=0.1 × 5=0.5 (N), result of calculation explanation F
2<F
0be that stiction between screw thread is greater than revolving force, therefore electrode drive output screw can not rotate, connector, moving contact electrode STATEMENT OF FEDERALLY SPONSORED, electrode drive head and moving contact electrode can not move, so even if high-power vibration proof high stability electromechanical transducer also can keep stablizing and not malfunction in the time being subject to large impact shock.
In other situations, as long as F
0>F
2, can prevent malfunction.By F
0=μ
0× F
1=μ
0ccos α, F
2=csin α can obtain μ
0>tan α, this explanation, the screw rod of driver output end, the tan α <uo of the radially angle α of the side of its screw thread and screw rod.Screw rod coordinates with connector thread in inner cavity, and screw rod can freely rotate at connector inner chamber, and band movement connector moves linearly.
4. the screw rod of the output of driver according to claim 3, this explanation, as long as the screw thread side of choose reasonable driver output screw and the warp-wise angle α value of screw rod make tan α be less than stiction μ
0, just can ensure that high-power vibration proof high stability electromechanical transducer misoperation can not occur running under large impact Vibration Condition.
In addition, because the distance of cut-offfing between contact electrode is to be promoted to produce by the screw rod of motor output end, so cut-offfing between contact electrode is enough large apart from what can do, to guarantee the proof voltage intensity between noncontact contact electrode, can adapt to so higher use voltage.
Embodiment: in the cut-away view of the high-power vibration proof high stability electromechanical transducer embodiment of Fig. 3, its electric insulation shell (1) is formed by high temperature resistant, fire-retardant plastic production, and external form is the cuboid that has a unfilled corner.In the inside of shell, lower-left end level is installed fixing electromechanical driver (2), electrode driver output screw (3) is arranged on the inner chamber of connector (4), two sensitive switches (11) are installed in the upper end of connector (4), while making connector (4) move to two extreme positions, touching sensitive switch (11) makes its action and cuts off the electricity supply, in sensitive switch (11), the right side of connector (4) is installed 3 groups successively, also can install 1 group according to actual needs, 2 groups, 4 groups or organize electric change over contact electrode more, every group of contact electrode is made up of 1 moving contact electrode (6) and 2 fixed contact electrodes (8), also can be formed by a moving contact electrode and a fixed contact electrode, its moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5) is that a rectangle is high temperature resistant, fire-retardant and there is the working of plastics of certain mechanical strength, on it, have 3 or the notch (13) corresponding with electric change over contact number, electrode drive head (6) embeds in notch (13), two contacts on moving contact electrode (7), are symmetrically welded, on electrode, make electrode elastic sheet (9).
Course of action: power supply terminal (10) switches on power, driver output screw (3) rotation, connector (4) moves linearly, moving contact electrode (7) is under the drive of moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5), by electrode drive head (6), moving contact electrode is contacted with fixed contact electrode (8), sensitive switch in the time reaching the contact pressure of setting (11) has touched the shell of connector, sensitive switch (11) action, make the power supply dead electricity of electromechanical driver, driver output screw stops operating, connector (4), moving contact electrode STATEMENT OF FEDERALLY SPONSORED (5) and electrode drive head (6) stop mobile, complete the switching motion of one-time contact electrode.Now, the outer power supply source of electromechanical driver does not interrupt, and makes contact electrode depart from normal contact and when misoperation, connector moves when running into great impact shock, and sensitive switch switches on power again.The output screw of electromechanical driver rotates, and makes connector return, contact electrode continue firmly contact.
The set setting parameter of this routine high-power vibration proof high stability electromechanical transducer: connector stroke 4mm, output screw pitch 0.8mm, the conversion action time that completes one-time contact electrode is 0.6S, the motor speed of electromechanical driver is 9960r/min, and the reductor speed reducing ratio of electromechanical driver is 20:1.According to actual needs, the motor speed of above-mentioned connector stroke, output screw pitch, the conversion action time that completes one-time contact electrode, electromechanical driver and the reductor speed reducing ratio of electromechanical driver can be arranged to the many groups of concrete numerical value that vary in size.
In the time that the electric power polarity of electromechanical driver is reverse, the output screw counteragent of driver, connector also reverse linear moves, and completes the commutation conversion of electrical switch.
Claims (6)
1. a high-power vibration proof high stability motor integral transducer, by electric insulation shell, organize the electrical switch that moving contact electrode and fixed contact electrode form, the electric drive parts of change over switch more, it is characterized in that: change over switch electric drive parts are electromechanical drivers, the output of driver is connected with connector, and electrical appliance switch limits the stroke of electromechanical driver.
2. high-power vibration proof high stability motor integral transducer according to claim 1, is characterized in that: electromechanical driver is made up of a motor and a decelerator, and motor is directly connected with decelerator and is encapsulated in an overall metal-back.
3. high-power vibration proof high stability motor integral transducer according to claim 1, it is characterized in that: the output of driver is made screw rod, screw rod coordinates with connector thread in inner cavity, and screw rod can freely rotate at connector inner chamber, and band movement connector moves linearly.
4. the screw rod of high-power vibration proof high stability motor integral converter output end according to claim 3, the tan α < uo of the radially angle α of the side of its screw thread and screw rod.
5. high-power vibration proof high stability motor integral transducer according to claim 1, is characterized in that: two extreme positions of connector arrange limit switch.
6. high-power vibration proof high stability motor integral transducer according to claim 1, is characterized in that: in the time leaving extreme position because of oscillating contact, relay power can be voluntarily to drive motors power supply, and extreme position is got back in contact.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561240.XU CN203607265U (en) | 2013-09-11 | 2013-09-11 | Large-power anti-vibration high-stability electromechanical integrated converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561240.XU CN203607265U (en) | 2013-09-11 | 2013-09-11 | Large-power anti-vibration high-stability electromechanical integrated converter |
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|---|---|
| CN203607265U true CN203607265U (en) | 2014-05-21 |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489669A (en) * | 2013-09-11 | 2014-01-01 | 廊坊市巽合新能源科技有限公司 | High-power anti-vibration high-stability mechanical and electrical integration converter |
-
2013
- 2013-09-11 CN CN201320561240.XU patent/CN203607265U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489669A (en) * | 2013-09-11 | 2014-01-01 | 廊坊市巽合新能源科技有限公司 | High-power anti-vibration high-stability mechanical and electrical integration converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140521 Termination date: 20160911 |