CN100521028C - Permanent-magnetic operation type electromagnetic combined contactor - Google Patents
Permanent-magnetic operation type electromagnetic combined contactor Download PDFInfo
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- CN100521028C CN100521028C CNB2006100481702A CN200610048170A CN100521028C CN 100521028 C CN100521028 C CN 100521028C CN B2006100481702 A CNB2006100481702 A CN B2006100481702A CN 200610048170 A CN200610048170 A CN 200610048170A CN 100521028 C CN100521028 C CN 100521028C
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- moving contact
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- bearing
- rotating shaft
- permanent
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Abstract
This invention relates to a magnetic combined contactor controlled by permanent magnet including a magnetic driver fixed on the frame containing coils, a moving core, a pull rod fixed on it and a static core, a static contactor fixed on the frame, moving contactor components set on the frame including a shaft fixed on the frame by a bearing base, at least one arm fixed on the shaft and a moving contactor, in which, a pushing rod fixedly connected with a push rod of the driver is set at one end of the shaft of the component and a return spring is set between the arm of the moving contactor component and the frame.
Description
Technical field
The present invention relates to a kind of common low-tension device that is used for the Electric Traction automation field, specifically is a kind of permanent-magnetic operation type electromagnetic combined contactor.
Background technology
Contactor is a kind of common low-tension device that is used for the Electric Traction automation field, be used for continually, at a distance, connection and disjunction have the main circuit of load or the automatic switchover electrical equipment of big volume controlled circuit.Its major control also can be used for controlling other electrical load, as electric heater, illuminating lamp, electric welding machine, capacitor group etc. to liking motor.Contactor is made of contact apparatus, transmission device, fixing device for installing and arc-control device, and by its kind of drive classification, contactor is divided into electromagnetic contactor and electropneumatic contactor.Wherein, the transmission device of electromagnetic contactor adopts electromagnetic driver, comprise: coil, moving iron core, static iron core reach the push rod fixing with moving iron core, because the electromagnetic contactor volume is bigger, be applicable to the unrestricted factory in some spaces, but for the limited place of some usage spaces, for example: when being used for the field weakening of diesel-electric locomotive control traction motor, because the usage space of diesel-electric locomotive is limited, has limited the scope of application to electromagnetic contactor; Therefore, China is used for the contactor that the field weakening of diesel-electric locomotive control traction motor is used at present, all are the grouping contactors that adopt electric empty drive system, its driving mechanism mainly is made up of common electric pneumatic valve and cylinder, promptly, utilize the open and close of electric pneumatic valve valve, the air channel of control transmission cylinder by the coil of control electric pneumatic valve, with the motion of air pressure driving cylinder piston, and then control contactor contact closure and disjunction.But by utilization practice for many years, this shortcoming of the empty grouping contactor that drives of electricity that adopts is more and more obvious, mainly shows the following aspects:
1, the electrical equipment responsiveness is slow, and arc extinguishing speed is slow, and the electric arc breaking capacity is poor, and appliance life is short.
Rate of breakdown height such as 2, electric pneumatic valve leakage, clamping stagnation, leather cup is aging, cylinder leaks out.
3, environmental suitability is poor, and on the plateau, extremely frigid zones cylinder easily takes place freeze, leather cup is aging, air leakage phenomena is more outstanding; Complex structure, the fault point is many, and maintenance work and maintenance cost are big.
4, control is complicated, need provide compressed air line and circuit dual control.
Therefore, for the limited place of picture this class usage space of diesel-electric locomotive, existing electromagnetic contactor volume is excessive, and also there is many-sided shortcoming in electropneumatic contactor; In addition, existing electromagnetic contactor adopts big current start and maintenance.Therefore,, simplify electrical equipment control in order fully to realize electromagnetization, energy-saving run (big current start, little electric current keeps), the structure of existing electromagnetic contactor is badly in need of improving.
Summary of the invention
The present invention provides a kind of permanent-magnetic operation type electromagnetic combined contactor in order to solve the excessive problem that is not suitable for the limited place use of usage space of existing electromagnetic contactor volume.
The present invention adopts following technical scheme to realize: a kind of permanent-magnetic operation type electromagnetic combined contactor, comprise the coil that comprises that is fixed on the bearing, moving iron core, with the fixing push rod of moving iron core, the electromagnetic driver of static iron core, be fixed in the fixed contact on the bearing, be arranged at the moving contact component on the bearing, moving contact component comprises by bearing pedestal and is fixed in rotating shaft on the bearing, at least one is fixed in the moving contact arm in the rotating shaft, and be fixed in moving contact on the moving contact arm, rotating shaft one end of moving contact component is provided with the promotion push rod that the push rod with electromagnetic driver is connected and fixed, and is provided with return spring between the moving contact arm of moving contact component and the bearing.Coil applied voltage to electromagnetic driver, produce electric current in the coil, in the magnetic circuit of moving iron core and static iron core composition, produce magnetic flux, thereby generation electromagnetic attraction, when electromagnetic attraction during greater than the reaction force of return spring, moving iron core drives push rod and outwards moves, promote to be arranged at the promotion push rod of moving contact component rotating shaft one end by push rod, the elastic force that makes rotating shaft overcome the return spring that is provided with between moving contact arm and the bearing rotates, and finally makes moving contact that is fixed on the moving contact arm and the fixed contact closure that is fixed on bearing; When applied voltage disappeared, electromagnetic force disappeared, and under the effect of return spring, made moving contact arm drive moving contact and fixed contact open (promptly restoring to the original state), and moving iron core also obtains discharging, restoring to the original state, and realizes the purpose of connection/minute deenergizing.
Described electromagnetic driver adopts shell-type helix tube type electromagnetic mechanism, coil in the electromagnetic driver is by being around on the same skeleton two around forming to opposite coil (being pull-in winding XH and release coil SF), and coil one side is provided with the ring-type alnico magnets on the static iron core, is respectively the S utmost point, the N utmost point inside and outside its ring.Described ring-type alnico magnets need customized specially.When receiving closure signal, pull-in winding XH applied voltage to electromagnetic driver, the magnetic field that pull-in winding XH produces produces attraction to an end face of moving iron core, the magnetic attraction that produces as pull-in winding XH and ring-type alnico magnets produce attraction with joint efforts greater than the counter-force of return spring the time, moving iron core begins to move, promote to be arranged at the promotion push rod of moving contact component rotating shaft one end by push rod, the elastic force that makes rotating shaft overcome the return spring that is provided with between moving contact arm and the bearing rotates, make dynamic/static contact closure (being the contactor closure), and rely on the attraction of ring-type alnico magnets to remain closed the position, to pull-in winding XH cancellation applied voltage, the interior no current of pull-in winding XH is flow through simultaneously; When receiving the disjunction order, release coil SF applied voltage to electromagnetic driver, the field weakening ring-type alnico magnets that release coil SF produces are in the magnetic field of moving iron core upper surface (being that magnetic field force and the ring-type alnico magnets that release coil SF produces produce making a concerted effort less than the counter-force of return spring of attraction), therefore, under the effect of return spring, moving iron core obtains discharging, restoring to the original state, and moving contact and fixed contact are restored to the original state.Owing in electromagnetic driver, be provided with the ring-type alnico magnets, make whole contactor realize purpose of energy saving, during startup, energising, power is big, and when keeping, no power, power is little.
Compared with prior art, the present invention adopts moving contact is fixed on moving contact component structure in the rotating shaft by the moving contact arm, and the rotating shaft that drives moving contact component by electromagnetic driver is rotated, realize dynamic/static contact closure, open; In addition, in the electromagnetic driver of the present invention alnico magnets are set, dynamic/static contact is being remained closed/consume electric power no longer during open mode, reach purpose of energy saving.
The present invention adopts the electromagnetic driver of built-in alnico magnets, and moving contact is fixed on moving contact component structure in the rotating shaft by the moving contact arm, the rotating shaft that drives moving contact component by electromagnetic driver is rotated, realize the work purpose of contactor, it is simple in structure, and is easy to use, good energy-conserving effect, volume is little, is fit to the limited place of usage space and realizes electromagnetization, especially is fit to railway diesel-electric locomotive control traction motor field weakening loop and uses.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the rearview of Fig. 2;
Fig. 6 is the structural representation of electromagnetic driver of the present invention;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is the A-A cutaway view (having removed control box) of Fig. 7;
Fig. 9 is the structural representation of stop bit device of the present invention;
Figure 10 is the control principle block diagram of intelligent control module;
Among the figure: the 1-bearing; The 2-electromagnetic driver; 3-moving contact arm; The 4-fixed contact; The 5-rotating shaft; The 6-bearing pedestal; The 7-return spring; 8-promotes push rod; The 9-push rod; The 10-static iron core; 11-moves iron core; The 12-coil; 13-annular alnico magnets; The 14-connector; The 15-straight pin; 16-stop bit device; The 17-stop block; 18-stop bit seat; The 19-adjustment sheet; 20-regulates head; The 21-sensitive switch; The 22-projection; The 23-control box; The 24-moving contact; The 25-spring; The 26-steady pin.
Embodiment
A kind of permanent-magnetic operation type electromagnetic combined contactor, comprise being fixed in and comprise coil 12 on the bearing 1, moving iron core 11, with the fixing push rod 9 of moving iron core 11, the electromagnetic driver 2 of static iron core 10, be fixed in the fixed contact 4 on the bearing 1, be arranged at the moving contact component on the bearing 1, moving contact component comprises by bearing pedestal 6 and is fixed in rotating shaft 5 on the bearing 1, at least one is fixed in the moving contact arm 3 in the rotating shaft 5, and be fixed in moving contact 24 on the moving contact arm 3, rotating shaft 5 one ends of moving contact component are provided with the promotion push rod 8 that the push rod 9 with electromagnetic driver 2 is connected and fixed, and are provided with return spring 7 between the moving contact arm 3 of moving contact component and the bearing 1.
Described electromagnetic driver 2 adopts shell-type helix tube type electromagnetic mechanism, coil 12 in the electromagnetic driver 2 is by being around on the same skeleton two around forming to opposite coil (being pull-in winding XH and release coil SF), and coil 12 1 sides are provided with ring-type alnico magnets 13 on the static iron core 10, are respectively the S utmost point, the N utmost point inside and outside its ring.Described ring-type alnico magnets need customized specially.
Push rod 9 ends of fixing with moving iron core 11 in the electromagnetic driver 2 are provided with connector 14, and connector 14 is fixedlyed connected with the promotion push rod 8 that is fixed in rotating shaft 5 one ends by straight pin 15; Rotating shaft 5 other ends are fixed with projection 22, are fixed with the sensitive switch 21 (as shown in Figure 5) as auxiliary contact that is rotated control by projection 22 on the bearing 1.
Described moving contact arm 3 is connected by steady pin 26 with moving contact 24, and is provided with spring 25 between moving contact 24 and the moving contact arm 3.Like this, in the dynamic/static contact closure, when opening, spring 25 can play certain cushioning effect.
During concrete enforcement, but a plurality of moving contact arms 3 of secured in parallel in the rotating shaft 5 of moving contact component, correspondingly fix the fixed contact 4 of same quantity on the bearing 1, realization is with the many purposes to dynamic/static contact of electromagnetic driver control, even can to adopt symmetrical structure (be that fixed contact is fixed in the middle of the bearing, and moving contact component is fixed in bearing upper static contact both sides), as shown in Figure 1.In addition, moving iron core is to the impact of electromagnetic driver end cap during for the moving contact that reduces the contactor moving contact component and fixed contact disjunction, be fixed with the stop block 17 that can rotate with rotating shaft 5 in the rotating shaft 5, correspondingly be provided with on the bearing 1 by stop bit seat 18, by bolt in the adjusting of stop bit seat 18 20 and can be sandwiched in the stop bit device 16 that the adjustment sheet 19 between stop bit seat 18 and the adjusting 20 is formed.Adjustment sheet 19 adopts the 0.5mm steel plate to make, and increase and decrease adjustment sheet 19 what can pass through, and conveniently regulates the size that dynamic/static contact is opened distance, and its structure as shown in Figure 9.
In order to realize the intellectuality of whole system, it is the Based Intelligent Control electronic circuit of core that described electromagnetic driver is provided with the PIC single-chip microcomputer, and be installed in the control box 23, its control principle block diagram as shown in figure 10, the Based Intelligent Control electronic circuit comprises the PIC single-chip microcomputer, for PIC single-chip microcomputer power supply through diode D1 and control voltage input line end A1, the DC/DC circuit of A2 serial connection, and equally through diode D1 and control voltage input line end A1, the voltage sampling circuit that links to each other with PIC single-chip microcomputer signal input part of A2 serial connection, the photoelectric isolating circuit that links to each other with PIC single-chip microcomputer signal output part, control voltage input line end A1, A2 is serially connected with the series arm of pull-in winding XH and field effect transistor M1 through diode D1, the connected node of pull-in winding XH and field effect transistor M1 (being the drain electrode of field effect pipe M1) is through diode D2, storage capacitor C links to each other with control voltage input line end A2, storage capacitor C two ends are parallel with the series arm of release coil SF and field effect transistor M2, the grid of field effect transistor M1 and M2 links to each other with the M2 tube drive circuit with the M1 pipe, the M1 pipe links to each other through the signal output part of photoelectric isolating circuit with the PIC single-chip microcomputer with the M2 tube drive circuit, and the M1 pipe links to each other with the output of DC/DC circuit with the power supply input of M2 tube drive circuit.After external voltage U is added on control voltage input line end A1, A2, output signal according to voltage sampling circuit, PIC single-chip microcomputer output control signal is ended after triggering M1 pipe and M2 tube drive circuit control M1 pipe conducting a period of time (promptly pull-in winding XH being added the voltage of a period of time), this moment, contactor kept by the suction that the ring-type alnico magnets produce, and external power source is storage capacitor C charging through diode D2 simultaneously; When applied voltage U disconnects or after voltage is lower than 30V, the PIC single-chip microcomputer is by M1 pipe and the conducting of M2 tube drive circuit control M2 pipe, storage capacitor C is by release coil SF discharge, the magnetic flux that release coil SF produces is opposite with the flow direction that the ring-type alnico magnets produce, to weaken the magnetic flux of ring-type alnico magnets, the final release that realizes contactor, under the support of related software, realize the various functions of contactor by the coil (pull-in winding XH and release coil SF) of PIC Single-chip Controlling electromagnetic driver.This smart electronics control module can have following functional characteristics: (1) pressure limiting function.The scope of the Control work voltage of contactor is 77V～137.5V, electromagnetic driver power demand difference when low voltage starting and high voltage startup is very big, can cause the very big bump of contact, starting power for the restriction electromagnetic driver, guaranteeing under the reliable prerequisite that starts of electromagnetic driver, control module is externally controlled voltage high the time, carries out deboost by chopper control.Simultaneously also can be by the convenient best fit that realizes contactor pull characteristics and spring load characteristic of software.(2) storage capacitor C discharges the assurance that enough pulse energies are the reliable release of electromagnetic driver, owing to reasons such as electric capacity self-discharges, the stored energy of storage capacitor C reduces along with time lengthening, this intelligence controlling device can be by detecting the energy of storage capacitor C at any time, charge for every now and then storage capacitor C, guarantee that storage capacitor C can discharge enough pulse energies, has improved the reliable breaking of contactor.Because it realizes the those of ordinary skill of the concrete internal circuit configuration of above-mentioned functions to electricity or electric control field, all is known and very easy realization, and the modification of multiple different structure can easily be arranged.Therefore, the present invention is not described specifically their internal circuit configuration.
Claims (10)
1, a kind of permanent-magnetic operation type electromagnetic combined contactor, comprise being fixed in and comprise coil (12) on the bearing (1), moving iron core (11), with the fixing push rod (9) of moving iron core (11), the electromagnetic driver (2) of static iron core (10), be fixed in the fixed contact (4) of bearing (1), be arranged at the moving contact component on the bearing (1), it is characterized in that moving contact component comprises by bearing pedestal (6) is fixed in rotating shaft (5) on the bearing (1), at least one is fixed in the moving contact arm (3) in the rotating shaft (5), and be fixed in moving contact (24) on the moving contact arm (3), rotating shaft (5) one ends of moving contact component are provided with the promotion push rod (8) that the push rod (9) with electromagnetic driver (2) is connected and fixed, and are provided with return spring (7) between the moving contact arm (3) of moving contact component and the bearing (1).
2, permanent-magnetic operation type electromagnetic combined contactor according to claim 1, it is characterized in that described electromagnetic driver (2) adopts shell-type helix tube type electromagnetic mechanism, coil (12) in the electromagnetic driver (2) is by being around on the same skeleton two around forming to opposite coil, and static iron core (10) is gone up near coil (12) one sides and is provided with ring-type alnico magnets (13), is respectively the S utmost point, the N utmost point inside and outside its ring.
3, permanent-magnetic operation type electromagnetic combined contactor according to claim 1 and 2, it is characterized in that push rod (9) end of fixing with moving iron core (11) in the electromagnetic driver (2) is provided with connector (14), connector (14) is fixedlyed connected with the promotion push rod (8) that is fixed in rotating shaft (5) one ends by straight pin (15).
4, permanent-magnetic operation type electromagnetic combined contactor according to claim 1 and 2 is characterized in that rotating shaft (5) other end is fixed with projection (22), is fixed with the sensitive switch as auxiliary contact (21) that is rotated control by projection (22) on the bearing (1).
5, permanent-magnetic operation type electromagnetic combined contactor according to claim 3 is characterized in that rotating shaft (5) other end is fixed with projection (22), is fixed with the sensitive switch as auxiliary contact (21) that is rotated control by projection (22) on the bearing (1).
6, according to claim 1 or 2 or 5 described permanent-magnetic operation type electromagnetic combined contactors, it is characterized in that described moving contact arm (3) is connected by steady pin (26) with moving contact (24), and be provided with spring (25) between moving contact (24) and the moving contact arm (3).
7, permanent-magnetic operation type electromagnetic combined contactor according to claim 3 is characterized in that described moving contact arm (3) is connected by steady pin (26) with moving contact (24), and is provided with spring (25) between moving contact (24) and the moving contact arm (3).
8, permanent-magnetic operation type electromagnetic combined contactor according to claim 4 is characterized in that described moving contact arm (3) is connected by steady pin (26) with moving contact (24), and is provided with spring (25) between moving contact (24) and the moving contact arm (3).
9, according to claim 1 or 2 or 5 or 7 or 8 described permanent-magnetic operation type electromagnetic combined contactors, it is characterized in that being fixed with in the rotating shaft (5) stop block (17) that can rotate with rotating shaft (5), correspondingly be provided with on the bearing (1) by stop bit seat (18), by bolt in the adjusting head (20) of stop bit seat (18) and the stop bit device (16) that can be sandwiched in stop bit seat (18) and form with an adjustment sheet (19) of regulating between (20).
10, permanent-magnetic operation type electromagnetic combined contactor according to claim 6, it is characterized in that being fixed with in the rotating shaft (5) stop block (17) that can rotate with rotating shaft (5), correspondingly be provided with on the bearing (1) by stop bit seat (18), by bolt in the adjusting head (20) of stop bit seat (18) and the stop bit device (16) that can be sandwiched in stop bit seat (18) and form with an adjustment sheet (19) of regulating between (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100481702A CN100521028C (en) | 2006-08-17 | 2006-08-17 | Permanent-magnetic operation type electromagnetic combined contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100481702A CN100521028C (en) | 2006-08-17 | 2006-08-17 | Permanent-magnetic operation type electromagnetic combined contactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1913071A CN1913071A (en) | 2007-02-14 |
| CN100521028C true CN100521028C (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100481702A Expired - Fee Related CN100521028C (en) | 2006-08-17 | 2006-08-17 | Permanent-magnetic operation type electromagnetic combined contactor |
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| CN (1) | CN100521028C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585227A (en) * | 2018-12-29 | 2019-04-05 | 昆山瑞普电气有限公司 | Double single-phase contactors of frame-type |
| CN116364479B (en) * | 2023-03-27 | 2023-11-10 | 嘉兴正誉电气有限公司 | Three-phase synchronous high-voltage contactor for rail transit permanent magnet motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947146A (en) * | 1989-03-07 | 1990-08-07 | Matsushita Electric Works, Ltd. | Electromagnetic contactor |
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2006
- 2006-08-17 CN CNB2006100481702A patent/CN100521028C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947146A (en) * | 1989-03-07 | 1990-08-07 | Matsushita Electric Works, Ltd. | Electromagnetic contactor |
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| CN1913071A (en) | 2007-02-14 |
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Owner name: YONGJI NEW SPEED ELECTRIC MOTOR CO. Free format text: FORMER OWNER: YONGJI MOTOR FACTORY, CHINESE BEICHE GROUP Effective date: 20080912 |
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Effective date of registration: 20080912 Address after: Number 18, motor street, Yongji, Shanxi Province, China: 044500 Applicant after: Yongji Xinshisu Motor Electrical Appliance Co., Ltd. Address before: Number 18, motor street, Yongji, Shanxi Province, China: 044500 Applicant before: CNR Yongji Electric Machine Factory |
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