CN201980877U

CN201980877U - Crane delay control circuit

Info

Publication number: CN201980877U
Application number: CN2011201257594U
Authority: CN
Inventors: 励春亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-19
Filing date: 2011-04-19
Publication date: 2011-09-21
Anticipated expiration: 2021-04-19

Abstract

The utility model discloses a crane delay control circuit comprising an ascending control circuit and a descending control circuit; the ascending control circuit and the descending control circuit are connected in parallel; the ascending control circuit comprises an ascending push-button contact; the upper end of the ascending push-button contact is connected with the voltage end of a control power source, and the lower end of the ascending push-button contact is serially connected with a descending contactor normally closed contact, an electrified delay relay and an ascending contactor coil; the lower end of the ascending contactor coil is connected with the zero voltage end of the control power source; the descending control loop comprises a descending push-button contact; the upper end of the descending push-button contact is connected with the voltage end of the control power source, and the lower end of the descending push-button contact is serially connected with an ascending contactor normally closed contact, the electrified delay relay and a descending contactor coil; and the lower end of the descending contactor coil is connected with the zero voltage end of the control power source. In the utility model, a time relay device is additionally arranged in the loop of the crane for ascending and descending control; therefore, the crane delay control circuit avoids the problem of crane such as burning an electric motor caused by improper operation and frequent clicking, and protects the safety of operators and the device safety.

Description

A kind of hoisting crane delay control circuit

Technical field

The utility model relates to a kind of drg, and a kind of specifically hoisting crane delay control circuit belongs to mechanical field.

Background technology

Hoisting crane widespread use in current light industry and heavy industry, hoisting crane quantity constantly increases, and the crane operation practitioner is because the accident that lack of training or misoperation cause is also increasing.The general load duration factor of crane hoisting motor is 40%--60%, can not continuous running long-time excessively, and because during electric motor starting, its electric current is excessive, crawl can make the burden of motor increase continuously, the motor feels hot, and bright company continues to rise, finally can make motor burn or damage coil, and the drg of motor also can close and undue wear because of frequent opening, also can make its heating because of overheated, and the friction force of brake plate is reduced greatly, the braking effect variation is easily caused danger.

The utility model content

Deficiency at the prior art existence, technical problem to be solved in the utility model is, a kind of hoisting crane delay control circuit is provided, solved the problem that burn-down of electric motor that hoisting crane causes because of misoperation, frequent crawl and brake kinetic moment descend, can guarantee the safety of producing.

For solving the problems of the technologies described above, technical solution adopted in the utility model is, a kind of hoisting crane delay control circuit comprises rising control loop and decline control loop, and its rising control loop is in parallel with the decline control loop; Described rising control loop comprises the rising push contact; Described rising push contact upper end connects the control power voltage terminal, connects with decline contactless switch normally closed contact, energization delay relay and contactless for hoisting coil in the lower end; Described contactless for hoisting coil lower end connects control power supply zero voltage end;

Described decline control loop comprises the decline push contact; Described decline push contact upper end connects the control power voltage terminal, connects with contactless for hoisting normally closed contact, energization delay relay and decline contactless coil in the lower end; Described decline contactless coil lower end connects control power supply zero voltage end.

Optimize above-mentioned hoisting crane delay control circuit, its contactless for hoisting coils from parallel connection of coils one indicator lamp; A described decline contactless coil indicator lamp in parallel.

The utility model is to increase time delay device in the loop that hoisting crane control hoists, the burn-down of electric motor that can avoid hoisting crane to cause greatly because of misoperation, frequent crawl, perhaps degradation problem under the brake kinetic moment protects the safety and the device security of operating personal; The utility model has adopted in the control loop that hoists the method that increases slug relay, makes to hoist or when descending, and on time of operation certain interval is arranged in the same way, thereby can make motor and drg obtain certain heat radiation time for its twice; Increase its life-span and operating effect, reduce the time of maintenance and the cost of maintenance, also can reduce the off-time that increases because of maintenance, also can correct the bad operating habit of operating personal; The utlity model has simple in structure, convenient and practical, with low cost, be widely used.

Description of drawings

Fig. 1 is schematic circuit diagram of the present utility model.

The specific embodiment

As shown in Figure 1, the utility model is a kind of hoisting crane delay control circuit, comprises rising control loop 1 and decline control loop 2, and its rising control loop 1 is in parallel with decline control loop 2; Described rising control loop 1 comprises rising push contact 11; Described rising push contact 11 upper ends connect control power voltage terminal 3, connect with decline contactless switch normally closed contact 12, energization delay relay 13 and contactless for hoisting coil 14 in the lower end; Described contactless for hoisting coil 14 lower ends connect control power supply zero voltage end 4;

Described decline control loop 2 comprises decline push contact 21; Described decline push contact 21 upper ends connect control power voltage terminal 3, connect with contactless for hoisting normally closed contact 22, energization delay relay 23 and decline contactless coil 24 in the lower end; Described decline contactless coil 24 lower ends connect control power supply zero voltage end 4.Its contactless for hoisting coils from parallel connection of coils one indicator lamp 5; Described decline contactless coil 24 indicator lamps 6 in parallel.The utility model has adopted in the control loop that hoists the method that increases slug relay, makes to hoist or when descending, and on time of operation certain interval is arranged in the same way, thereby can make motor and drg obtain certain heat radiation time for its twice; Increase its life-span and operating effect, reduce the time of maintenance and the cost of maintenance, also can reduce the off-time that increases because of maintenance, also can correct the bad operating habit of operating personal.

The above, only be to preferred embodiment of the present utility model, be not to be that the utility model is done other forms of restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims

1. a hoisting crane delay control circuit comprises rising control loop and decline control loop, it is characterized in that: described rising control loop is in parallel with the decline control loop; Described rising control loop comprises the rising push contact; Described rising push contact upper end connects the control power voltage terminal, connects with decline contactless switch normally closed contact, energization delay relay and contactless for hoisting coil in the lower end; Described contactless for hoisting coil lower end connects control power supply zero voltage end;

2. hoisting crane delay control circuit according to claim 1 is characterized in that: described contactless for hoisting coils from parallel connection of coils one indicator lamp; A described decline contactless coil indicator lamp in parallel.