CN202880688U - Control circuit of double speed motor of translation mechanism of crane - Google Patents
Control circuit of double speed motor of translation mechanism of crane Download PDFInfo
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- CN202880688U CN202880688U CN 201220531602 CN201220531602U CN202880688U CN 202880688 U CN202880688 U CN 202880688U CN 201220531602 CN201220531602 CN 201220531602 CN 201220531602 U CN201220531602 U CN 201220531602U CN 202880688 U CN202880688 U CN 202880688U
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- slow speed
- control circuit
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Abstract
The utility model relates to a control circuit of a double speed motor of a translation mechanism of a crane. The control circuit mainly comprises a low speed contactor branch circuit, a high speed contactor branch circuit and a brake contactor branch circuit, wherein the low speed contactor branch circuit, the high speed contactor branch circuit and the brake contactor branch circuit are formed in manners that corresponding contactors and control buttons are connected in series, and a timing closing contact of a first delay relay is connected in series into the low speed contactor branch circuit, is in an off state when the high speed contactor branch circuit and the low speed contactor branch circuit are electrified and is closed when a delay time is up. According to the control circuit of the double speed motor of the translation mechanism of the crane, the breakover of the low speed contactor branch circuit can be delayed by virtue of the delay relay, and a buffer time is provided for switching of running speeds of the motor, so that the problem of large mechanical shock when a fast running state is changed into a slow running state is solved.
Description
Technical field
The utility model relates to a kind of translational mechanism of crane double-speed motor control circuit.
Background technology
At present there are two problems in the circuit of double speed push button control double-speed motor, A: large by the physical shock that turns fast when switching at a slow speed, shortened service life of motor; B: the double-speed motor of double speed push button control, the operator is often without at a slow speed and direct release handle button, and motor is directly by quick parking, easy burn-out brake rectifying piece, shortened life-span of drg, and it is excessive also can to cause electromechanics to impact.
The problems referred to above A's is former because the slow speed motor energising requires motor to move with speed at a slow speed immediately, and there is inertia in motor self, speed can not be suddenlyd change, can only reduce to slow down gradually fast, so just form the contradiction that drop into the operation point and quick inertia slows down at a slow speed, cause the electromechanics vibratory impulse large.The problems referred to above B's is former because motor straight connects by quick parking and causes.。
The utility model content
The purpose of this utility model provides a kind of double-speed motor control circuit, runs to fast the large problem of slow running switching time tool impact in order to solve.
For achieving the above object, scheme of the present utility model is: translational mechanism of crane double-speed motor control circuit, comprise the at a slow speed contactless switch branch road, rapid contactless branch road and the braking contactor branch road that mainly are in series by corresponding contact device and corresponding control button, it is characterized in that, string is provided with the time closing contact of first slug relay (K50) in the described at a slow speed contactless switch branch road, this time closing contact cuts off the power supply, is in when the contactless switch branch road is switched at a slow speed off-state at the rapid contactless branch road, then closed at delay time.
The coils from parallel connection of coils of described the first slug relay (K50) is on the coil of the rapid contactless (K14) of described rapid contactless branch road, and the time closing contact of described the first slug relay is the time closing normally closed contact.
Also be provided with second slug relay (K51), time-delay break contact one end of the second slug relay is connected in the contactless switch branch road at a slow speed, form one with the at a slow speed contactless switch of contactless switch branch road at a slow speed is the interim loop of the interim power supply of contactless coil at a slow speed, this time-delay break contact cuts off the power supply, is in when the contactless switch branch road also cuts off the power supply at a slow speed closure state, the described interim loop of conducting at the rapid contactless branch road.
The coils from parallel connection of coils of described the second slug relay (K51) is on the coil of the rapid contactless (K14) of described rapid contactless branch road, and the time-delay break contact of described the second slug relay disconnects open contact for time-delay; This time-delay disconnects open contact string and is located in the braking contactor branch road, connect with the coil of described braking contactor branch road, and this time-delay disconnects open contact one end connection power supply, and the other end is connected between the contactless coil and control button of contactless switch branch road at a slow speed.
Described time-delay disconnects open contact one end and connects power supply, and the other end is connected between the time closing contact of control button in the contactless switch branch road at a slow speed and described the first slug relay (K50).
The delay time of the first slug relay (K50) is greater than the second slug relay (K51).
The utility model can utilize slug relay to delay the at a slow speed conducting of contactless switch branch road, for the switching of motor running velocity provides surge time, runs to fast slow running switching time tool and impacts large problem thereby solved.
When the utility model occurs in the maloperation of directly stopping fast, force at a slow speed contactless switch branch road conducting, surge time is provided, thereby has solved the various harm that maloperation brings.
Description of drawings
Fig. 1 is translational mechanism of crane double-speed motor interconnecting wiring diagram;
Fig. 2 is existing control circuit figure;
Fig. 3 is the control circuit figure that solves the A problem;
Fig. 4 is the control circuit figure that solves the A+B problem.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
A kind of electrical schematic diagram of translational mechanism of crane double-speed motor as shown in Figure 1.M41 is double-speed motor, and Y41 is drg.K13 is contactless switch at a slow speed, and K14 is rapid contactless, and K11, K12 control motor positive and inverse, and K52 is braking contactor.
The control circuit of Fig. 1 as shown in Figure 2, comprise: pocket torch door S1, it is control button, the positive contactor branch road corresponding with K11, with counter-rotating contactless switch branch road corresponding to K12, with at a slow speed contactless switch branch road corresponding to K13, the rapid contactless branch road corresponding with K14, each contactless switch props up the route contactless switch and button corresponding to S1 is in series.Be illustrated as pocket torch door S1 initial condition, S1-3, S1-4 all disconnect.(deletion has herein) flicking S1-3 action, the K11 coil gets electric, and the K13 coil gets electric, and the K52 coil gets electric, positive contactor branch road and at a slow speed contactless switch branch road conducting, motor M 41 is at a slow speed forward.S1-3 is double-deck switch, and when continuing to press, when high-speed switch (among the S1 parallel double-throw switch) was closed, K11, K14 coil all got electric, the K13 coil losing electricity, and the conducting of rapid contactless branch road, motor M 41 is in quick operation.During counter-rotating, the K12 coil gets electric.
Control circuit control chart 1 double-speed motor with Fig. 2, just there is the pointed A problem of background technology, that is: when the high-speed switch disconnection, when arbitrary gear slow button is closed, require motor to move with speed at a slow speed immediately, and there is inertia in motor self, speed can not be suddenlyd change, can only reduce to slow down gradually fast, so just form the contradiction that drop into the operation point and quick inertia slows down at a slow speed, cause the electromechanics vibratory impulse large.Among Fig. 2, as pocket torch door S1 during at second gear, when namely high-speed switch is closed, allows first K50 connect and make the outage of K13 contactless switch, it is electric just the K14 contactless switch to be got, guarantee K13, K14 can not be simultaneously electric.
In order to solve the A problem, according to design of the present utility model, make fast when switching at a slow speed, the contactless switch branch road can Delayed conducting at a slow speed, the time closing contact that string is provided with a slug relay in contactless switch branch road at a slow speed gets final product, accordingly, this slug relay's coil is connected with the rapid contactless coil.
As other embodiments, can adopt the control circuit of Fig. 3, directly transform the K50 among Fig. 2 as slug relay (transform coil and contact), this mode has not only kept K50 function originally, can also solve above-mentioned A problem.The coils from parallel connection of coils of the coil of the K50 of slug relay and rapid contactless K14, the time closing contact of the K50 of slug relay are connected at a slow speed in the contactless switch branch road, connect with the coil of K13.
Fast when switching at a slow speed, because the existence of K50 delayed contact, the K50 holding contact disconnects, motor can not switch at a slow speed immediately, the closure of K13 contactless switch is then controlled by the delay time of K50 relay, after the K50 delay time arrived, the contactless switch branch road can conducting at a slow speed, and motor is with at a slow speed speed operation.Because time of K50 relay is to motor inertia time of action, make at a slow speed the operation point put into the slow running state, so problem A problem solve, reduced physical shock and vibration.Is the setting time of K50 relay how to confirm? to decide according to the motor situation, because 4/8 utmost point motor and 4/16 utmost point motor forward asynchronism(-nization) at a slow speed fast to, so determine according to the motor self-characteristic.
Above mentioning S1-3 is double-deck switch, and flicking S1-3 is one grade, and slow running is second gear by S1-3 heavily, fast operation.From the operating process of quick standard to stopping be: light S1-3, make motor be in slow running a period of time, and then be totally released S1-3, realize stopping.But under the actual conditions, operating personal often directly unclamps the S1-3 button, causes directly from fast to parking, and the drg band-type brake has a strong impact on equipment life.
Above-mentioned situation is exactly the B problem of indication in the background technology, in order to solve simultaneously A problem and B problem, such as Fig. 4, further control circuit is improved: string is established the time-delay break contact of a K51 of slug relay in the braking contactor branch road, because the K11 coil has electricity when loosing one's grip, so should also form self-locking circuit with K11 normally closed contact and K11 coil by the time-delay break contact, be continuously the K11 coil power supply, thereby guarantee that K52 has electricity, the conducting of braking contactor branch road, also be the K13 coil power supply simultaneously, force to make motor be in slow running.After delay time arrived, K51 time-delay break contact disconnected K11, K13 and K52 coil blackout, motor stopping, drg band-type brake.Owing to experienced slow running a period of time, so the impact that causes reduces greatly.Will guarantee that the setting time of K51 should so both guarantee that motor stopped at a slow speed slightly less than the setting time of K50 this moment, the problem of having avoided again slow speed motor again to switch on and turn round and just can stop.
Claims (6)
1. translational mechanism of crane double-speed motor control circuit, comprise the at a slow speed contactless switch branch road, rapid contactless branch road and the braking contactor branch road that mainly are in series by corresponding contact device and corresponding control button, it is characterized in that, string is provided with the time closing contact of first slug relay (K50) in the described at a slow speed contactless switch branch road, this time closing contact cuts off the power supply, is in when the contactless switch branch road is switched at a slow speed off-state at the rapid contactless branch road, then closed at delay time.
2. translational mechanism of crane double-speed motor control circuit according to claim 1, it is characterized in that, the coils from parallel connection of coils of described the first slug relay (K50) is on the coil of the rapid contactless (K14) of described rapid contactless branch road, and the time closing contact of described the first slug relay is the time closing normally closed contact.
3. translational mechanism of crane double-speed motor control circuit according to claim 2, it is characterized in that, also be provided with second slug relay (K51), time-delay break contact one end of the second slug relay is connected in the contactless switch branch road at a slow speed, form one with the at a slow speed contactless switch of contactless switch branch road at a slow speed is the interim loop of the interim power supply of contactless coil at a slow speed, this time-delay break contact cuts off the power supply, is in when the contactless switch branch road also cuts off the power supply at a slow speed closure state, the described interim loop of conducting at the rapid contactless branch road.
4. translational mechanism of crane double-speed motor control circuit according to claim 3, it is characterized in that, the coils from parallel connection of coils of described the second slug relay (K51) is on the coil of the rapid contactless (K14) of described rapid contactless branch road, and the time-delay break contact of described the second slug relay disconnects open contact for time-delay; This time-delay disconnects open contact string and is located in the braking contactor branch road, connect with the coil of described braking contactor branch road, and this time-delay disconnects open contact one end connection power supply, and the other end is connected between the contactless coil and control button of contactless switch branch road at a slow speed.
5. translational mechanism of crane double-speed motor control circuit according to claim 4, it is characterized in that, described time-delay disconnects open contact one end and connects power supply, and the other end is connected between the time closing contact of control button in the contactless switch branch road at a slow speed and described the first slug relay (K50).
6. translational mechanism of crane double-speed motor control circuit according to claim 5 is characterized in that, the delay time of the first slug relay (K50) is greater than the second slug relay (K51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220531602 CN202880688U (en) | 2012-10-17 | 2012-10-17 | Control circuit of double speed motor of translation mechanism of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220531602 CN202880688U (en) | 2012-10-17 | 2012-10-17 | Control circuit of double speed motor of translation mechanism of crane |
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| Publication Number | Publication Date |
|---|---|
| CN202880688U true CN202880688U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220531602 Expired - Lifetime CN202880688U (en) | 2012-10-17 | 2012-10-17 | Control circuit of double speed motor of translation mechanism of crane |
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| CN (1) | CN202880688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891345A (en) * | 2015-04-22 | 2015-09-09 | 李志刚 | Crane ground operation position limitation control apparatus |
| CN109667731A (en) * | 2017-10-17 | 2019-04-23 | 中车株洲电力机车研究所有限公司 | A kind of control method and device of Wind turbines auxiliary motor |
-
2012
- 2012-10-17 CN CN 201220531602 patent/CN202880688U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891345A (en) * | 2015-04-22 | 2015-09-09 | 李志刚 | Crane ground operation position limitation control apparatus |
| CN109667731A (en) * | 2017-10-17 | 2019-04-23 | 中车株洲电力机车研究所有限公司 | A kind of control method and device of Wind turbines auxiliary motor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |