CN204068771U - A kind of building hoist starter - Google Patents

Abstract

The utility model discloses a kind of building hoist starter, comprise: SE safety switch, QF general supply circuit breaker, QF1 braking power circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM2 bypass contactor, KM3 contactless for hoisting, KM4 decline contactor, KM5 braking power contactor, M motor, T rectifier and BK brake, wherein, SE safety switch, QF general supply circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM3 contactless for hoisting is together with M motor in series, KM2 bypass contactor and CMC-SX soft initiator are in parallel, KM3 contactless for hoisting and KM4 decline contactor also parallel with one another, QF1 braking power circuit breaker, KM5 braking power contactor, T rectifier and BK brake are cascaded, together with being in parallel with main circuit again.

Description

A kind of building hoist starter

Technical field

The utility model relates to a kind of building hoist starter.

Background technology

At present, the startup of building hoist is divided into directly startup and frequency converter soft start, and directly start mechanical impact force large, pressure drop of grid is large, and frequency converter starts more satisfactory, but cost is high, user layman not easy-maintaining, and the shortcomings such as maintenance cycle length.

Utility model content

Goal of the invention of the present utility model is to provide a kind of building hoist starter.

It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:

A kind of building hoist starter, specifically comprises:

SE safety switch, QF general supply circuit breaker, QF1 braking power circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM2 bypass contactor, KM3 contactless for hoisting, KM4 decline contactor, KM5 braking power contactor, M motor, T rectifier and BK brake, wherein, SE safety switch, QF general supply circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM3 contactless for hoisting is together with M motor in series, KM2 bypass contactor and CMC-SX soft initiator are in parallel, KM3 contactless for hoisting and KM4 decline contactor also parallel with one another, QF1 braking power circuit breaker, KM5 braking power contactor, T rectifier and BK brake are cascaded, together with being in parallel with main circuit again.

After technical solutions of the utility model, greatly can reduce production cost, reduce apparatus failure rate, serve effect duplicate with frequency converter smooth starting, bring great convenience to the maintenance of user, and soft initiator structure is simple, technology content is not high, thus makes the performance of lift and reliability obtain very large lifting.

Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in detail, to make above-mentioned advantage of the present utility model definitely.

Fig. 1 is the electrical block diagram of the utility model building hoist starter.

Embodiment

Below in conjunction with specific embodiment, the utility model is described in detail.

The utility model technology can solve the problem that soft initiator can not stop in building hoist decline process, and this is also soft initiator not applicable main cause in this industry.

For this reason, the utility model provides a kind of building hoist starter, specifically comprises:

SE safety switch, QF general supply circuit breaker, QF1 braking power circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM2 bypass contactor, KM3 contactless for hoisting, KM4 decline contactor, KM5 braking power contactor, M motor, T rectifier and BK brake, wherein, SE safety switch, QF general supply circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM3 contactless for hoisting is together with M motor in series, KM2 bypass contactor and CMC-SX soft initiator are in parallel, KM3 contactless for hoisting and KM4 decline contactor also parallel with one another, QF1 braking power circuit breaker, KM5 braking power contactor, T rectifier and BK brake are cascaded, together with being in parallel with main circuit again.

Wherein, specifically, the utility model technology taked drip irrigation device that solves the problem is:

Carry out by one group of parameter in lift rising start-up course and start stably and stop, and stopped stably by plug braking by other one group of parameter in lift decline process.

After have employed technical solutions of the utility model, greatly can reduce production cost, reduce apparatus failure rate, serve effect duplicate with frequency converter smooth starting, bring great convenience to the maintenance of user, and soft initiator structure is simple, technology content is not high, thus makes the performance of lift and reliability obtain very large lifting.

Be described below in conjunction with the operation principle of accompanying drawing to the utility model technology:

Wherein, lift uphill process is that contactor KM3 closes, and soft initiator parameter one S1 closes, more closed S point startup soft initiator, and lift presses that start up curve smooth starting is complete, and bypass contactor is connected automatically, and start-up course is complete; Disconnect S point and stop soft initiator, bypass contactor disconnects automatically, and lift is steadily parked in destination locations by stopping curve, and contactor KM3 disconnects.Lift decline process is that contactor KM4 closes, and soft initiator parameter one S1 closes, more closed S point startup soft initiator, and lift presses that start up curve smooth starting is complete, and bypass contactor is connected automatically, and start-up course is complete; During stopping, first disconnect S point, disconnect KM4 after 0.2S, then connect contactor KM3, parameter two S2 point and start-up point S restart soft initiator, allow lift steadily stop at destination locations by the characteristic of plug braking and soft initiator.Whole process has the participation of PLC and brake to coordinate.

It should be noted that; above-mentioned specific embodiment is only exemplary; under the instruction of the utility model technology, those skilled in the art can carry out various improvement on the basis of above-described embodiment, and these improvement drop in the protection range of the utility model technology.

It is apparent to those skilled in the art that the object of specific descriptions just in order to explain the utility model technology above, not for limiting the utility model technology.The protection range of the utility model technology is had the power requirement and equivalents.

Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims (1)

1. a building hoist starter, is characterized in that, specifically comprises:

SE safety switch, QF general supply circuit breaker, QF1 braking power circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM2 bypass contactor, KM3 contactless for hoisting, KM4 decline contactor, KM5 braking power contactor, M motor, T rectifier and BK brake, wherein, SE safety switch, QF general supply circuit breaker, TA1 current transformer and TA2 current transformer, CMC-SX soft initiator, KM3 contactless for hoisting is together with M motor in series, KM2 bypass contactor and CMC-SX soft initiator are in parallel, KM3 contactless for hoisting and KM4 decline contactor also parallel with one another, QF1 braking power circuit breaker, KM5 braking power contactor, T rectifier and BK brake are cascaded, together with being in parallel with main circuit again.