CN202856685U - Two-speed motor control circuit of crane translation mechanism - Google Patents
Two-speed motor control circuit of crane translation mechanism Download PDFInfo
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- CN202856685U CN202856685U CN 201220531332 CN201220531332U CN202856685U CN 202856685 U CN202856685 U CN 202856685U CN 201220531332 CN201220531332 CN 201220531332 CN 201220531332 U CN201220531332 U CN 201220531332U CN 202856685 U CN202856685 U CN 202856685U
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- contactor
- time
- branch road
- delay
- slow speed
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Abstract
The utility model relates to a two-speed motor control circuit of a crane translation mechanism. The two-speed motor control circuit of the crane translation mechanism mainly comprises a low speed contactor branch formed by connecting a corresponding contactor with a corresponding control button in series, a rapid speed contactor branch and a brake contactor branch, wherein one end of a time-delay break contact of a time-delay relay is connected with the low speed contactor branch and forms a temporary loop with a low speed contactor of the low speed contactor branch for temporarily providing power for low speed contactor coil, the time-delay break contact is in a closed state when the rapid speed contactor branch and the low speed contactor branch are both power off , so conduction of the temporary loop is realized. The two-speed motor control circuit of the crane translation mechanism can force the low speed contactor branch to realize conduction for providing buffer time when wrong operation of rapid direction stop occurs, and thereby various harms because of wrong operation are settled.
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 button control double-speed motor, A: large by the mechanical shock that turns fast when switching at a slow speed, shortened useful life of motor; B: the double-speed motor of double speed 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 brake, 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 working 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: a kind of translational mechanism of crane double-speed motor control circuit, comprise the at a slow speed contactor branch road that mainly is in series by corresponding contact device and corresponding control button, rapid contactless branch road and braking contactor branch road, it is characterized in that, also be provided with a time-delay relay (K51), time-delay break contact one end of this time-delay relay is connected at a slow speed in the contactor branch road, forming one with the at a slow speed contactor of contactor branch road at a slow speed be the interim loop that temporarily powers of contactor coil at a slow speed, this time-delay break contact cuts off the power supply at the rapid contactless branch road, be in closure state when the contactor branch road also cuts off the power supply at a slow speed, the described interim loop of conducting.
The coils from parallel connection of coils of described time-delay 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 time-delay relay disconnects normally opened contact for time-delay; This time-delay disconnects normally opened 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 normally opened contact one end connection power supply, and the other end is connected between the contactor coil and control button of contactor branch road at a slow speed.
When the utility model occurs in the misoperation of directly stopping fast, force at a slow speed contactor branch road conducting, buffer time is provided, thereby has solved the various harm that misoperation brings.
Description of drawings
Fig. 1 is translational mechanism of crane double-speed motor winding diagram;
Fig. 2 is existing control circuit figure;
Fig. 3 is the control circuit figure that solves the B problem.
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 brake.K13 is contactor 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 contactor branch road corresponding to K12, with at a slow speed contactor branch road corresponding to K13, the rapid contactless branch road corresponding with K14, each contactor props up the route contactor and button corresponding to S1 is in series.Be illustrated as pocket torch door S1 initial condition, S1-3, S1-4 all disconnect.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 contactor 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 commutator) 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.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 contactor, it is electric just the K14 contactor to be got, guarantee K13, K14 can not be simultaneously electric.
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 personnel often directly unclamp the S1-3 button, cause directly from fast to parking, and the brake 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 the B problem, control circuit such as Fig. 3: string is established the time-delay break contact of a time-delay relay K51 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 is the K13 coil power supply simultaneously, forces 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, brake band-type brake.Owing to experienced slow running a period of time, so the impact that causes reduces greatly.
Claims (2)
1. translational mechanism of crane double-speed motor control circuit, comprise the at a slow speed contactor branch road that mainly is in series by corresponding contact device and corresponding control button, rapid contactless branch road and braking contactor branch road, it is characterized in that, also be provided with a time-delay relay (K51), time-delay break contact one end of this time-delay relay is connected at a slow speed in the contactor branch road, forming one with the at a slow speed contactor of contactor branch road at a slow speed be the interim loop that temporarily powers of contactor coil at a slow speed, this time-delay break contact cuts off the power supply at the rapid contactless branch road, be in closure state when the contactor branch road also cuts off the power supply at a slow speed, the described interim loop of conducting.
2. described a kind of 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 time-delay 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 time-delay relay disconnects normally opened contact for time-delay; This time-delay disconnects normally opened 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 normally opened contact one end connection power supply, and the other end is connected between the contactor coil and control button of contactor branch road at a slow speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220531332 CN202856685U (en) | 2012-10-17 | 2012-10-17 | Two-speed motor control circuit of crane translation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220531332 CN202856685U (en) | 2012-10-17 | 2012-10-17 | Two-speed motor control circuit of crane translation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856685U true CN202856685U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220531332 Expired - Fee Related CN202856685U (en) | 2012-10-17 | 2012-10-17 | Two-speed motor control circuit of crane translation mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701097A (en) * | 2013-12-14 | 2014-04-02 | 天水星火机床有限责任公司 | Protection system of motor brake |
-
2012
- 2012-10-17 CN CN 201220531332 patent/CN202856685U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701097A (en) * | 2013-12-14 | 2014-04-02 | 天水星火机床有限责任公司 | Protection system of motor brake |
| CN103701097B (en) * | 2013-12-14 | 2016-06-15 | 天水星火机床有限责任公司 | A kind of protection system of motor brake |
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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 |
Granted publication date: 20130403 Termination date: 20191017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |