CN212318443U

CN212318443U - Electric control device of hydraulic station

Info

Publication number: CN212318443U
Application number: CN202022106261.5U
Authority: CN
Inventors: 吴晓喜; 张夏; 罗夕健
Original assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-01-08
Anticipated expiration: 2030-09-23

Abstract

The utility model provides an electrical control device of a hydraulic station, which comprises an oil pump motor start-stop control loop and an oil pump motor power-on main loop; the oil pump motor start-stop control loop and the oil pump motor electrifying main loop are arranged in parallel and are connected to a power supply end; the oil pump motor start-stop control loop comprises a stop button T, a start button P, a coil of an alternating current contactor KM, an auxiliary contact of the alternating current contactor KM and a normally closed contact of a thermal protector FR, wherein one end of the stop button T is connected with an alternating current power line, and the other end of the stop button T is sequentially connected with the start button P, the coil of the alternating current contactor KM and the normally closed contact of the thermal protector FR in series and then connected to a power supply end to form a loop; an auxiliary contact of the alternating current contactor KM is connected with the starting button P in parallel; the main circuit for electrifying the oil pump motor comprises an air switch QF, an alternating current contactor KM and a thermal protector FR which are sequentially connected in series; the thermal protector FR is connected with the oil pump motor, and the air switch QF is connected with the power supply. The utility model discloses simple structure, convenient operation, the security performance is high.

Description

Electric control device of hydraulic station

Technical Field

The utility model relates to an electrical control technical field, concretely relates to hydraulic pressure station electrical control device.

Background

The hydraulic station is a hydraulic source device including a hydraulic pump, a motor, an oil tank, a directional valve, a throttle valve, an overflow valve, and the like, or a hydraulic device including a control valve. The hydraulic station is connected with the driving device by oil pipes according to the flow direction, pressure and flow rate of the oil supply required by the driving device, and various specified actions can be realized. The hydraulic station can realize the functions only by electrical control, and the electrical control of the existing hydraulic station has a complex structure and does not have handle control which is convenient to operate.

In view of the above, there is a need for an electrical control device for a hydraulic station to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic pressure station electrical control device to solve the oil pump motor and open stop control, tribit cross valve action scheduling problem.

In order to realize the aim, the utility model provides an electrical control device of a hydraulic station, which comprises an oil pump motor start-stop control loop and an oil pump motor electrifying main loop; the oil pump motor start-stop control loop and the oil pump motor electrifying main loop are arranged in parallel and are connected to a power supply end;

the oil pump motor start-stop control loop comprises a stop button T, a start button P, a coil of an alternating current contactor KM, an auxiliary contact of the alternating current contactor KM and a normally closed contact of a thermal protector FR, wherein one end of the stop button T is connected with an alternating current power line, and the other end of the stop button T is sequentially connected with the start button P, the coil of the alternating current contactor KM and the normally closed contact of the thermal protector FR in series and then connected to a power supply end to form a loop; an auxiliary contact of the alternating current contactor KM is connected with the starting button P in parallel;

the main circuit for electrifying the oil pump motor comprises an air switch QF, an alternating current contactor KM and a thermal protector FR which are sequentially connected in series; the thermal protector FR is connected with the oil pump motor, and the air switch QF is connected with the power supply.

Furthermore, the electric control device also comprises a three-position four-way valve working control loop; the three-position four-way valve work control loop comprises a connecting switch K, an isolation transformer B, an intermediate relay KM1 and an intermediate relay KM 2; the input end of the isolation transformer B is connected with a switch K, and the connection switch K is connected with a power supply; the output end of the isolation transformer B is connected with an intermediate relay KM1 and an intermediate relay KM 2; the intermediate relay KM1 and the intermediate relay KM2 are connected in parallel, and a normally open contact K1 of the intermediate relay KM1 and a normally open contact K2 of the intermediate relay KM2 are respectively connected with a left coil and a right coil of the three-position four-way valve D.

Further, the three-position four-way valve work control loop also comprises an emergency stop button T1, a button P1, a button P2, a limit switch SQ1 and a limit switch SQ 2; the emergency stop button T1 is connected with one ends of a button P1 and a button P2, the other end of the button P1 is connected with a limit switch SQ1 in series, and the other end of the button P2 is connected with a limit switch SQ2 in series; the limit switch SQ1 and the limit switch SQ2 are respectively connected in series with a coil of the intermediate relay KM1 and a coil of the intermediate relay KM 2; the other ends of the coil of the intermediate relay KM1 and the coil of the intermediate relay KM2 are connected with an isolation transformer B.

Further, the three-position four-way valve work control loop also comprises a handle SB; the button of the handle SB is connected to both ends of the button P1 and the button P2; the handle SB has the same functions as the buttons P1 and P2.

Use the technical scheme of the utility model, following beneficial effect has:

(1) the utility model discloses simple structure, convenient operation, when starting button P pressed, AC contactor KM's coil got the electricity, made oil pump motor circular telegram major loop AC contactor KM actuation work to provide the circular telegram power for the oil pump motor.

(2) The utility model discloses in, when button P1 or button P2 or handle SB's button is pressed, the 220V power is through isolation transformer B, scram button T1, button P1 or button P2 or handle SB, limit switch SQ1 or limit switch SQ2 make relay KM1 or KM 2's coil the actuation that gets electric, thereby corresponding relay KM1 or relay KM 2's normally open contact K1 or K2 are closed, make three-position four way valve D's left coil or right coil work that gets electric, thereby control three-position four way valve's action, accomplish the function that requires.

(3) The utility model discloses in, prevent through setting up hot protector FR that the oil pump motor from transshipping, effectively protect oil pump motor and circuit, improved the life of device.

(4) The utility model discloses in, set up isolation transformer B and prevent the emergence of incident.

(5) The utility model discloses in, set up limit switch SQ1 and limit switch SQ2, improve the reliability of system.

(6) The utility model discloses in, set up scram button T1, emergency stop when can effectually preventing emergency from taking place improves the security.

(7) The utility model discloses in, it is more convenient to set up handle SB and make the workman operate in the course of the work.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a circuit diagram of a hydraulic station electrical control;

the system comprises an oil pump motor start-stop control loop 1, an oil pump motor power-on main loop 2, and a three-position four-way valve work control loop 3.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Example 1:

referring to fig. 1, the electrical control device for the hydraulic station comprises an oil pump motor start-stop control loop 1, an oil pump motor electrifying main loop 2 and a three-position four-way valve work control loop 3; the oil pump motor start-stop control loop and the oil pump motor electrifying main loop are arranged in parallel and are connected to an alternating current 380V power supply end; the oil pump motor start-stop control loop can control the main loop of the oil pump motor, namely, whether the oil pump motor is electrified or not.

The oil pump motor start-stop control loop 1 comprises a stop button T, a start button P, a coil of an alternating current contactor KM, an auxiliary contact of the alternating current contactor KM and a normally closed contact of a thermal protector FR, wherein one end of the stop button T is connected with an alternating current power line, and the other end of the stop button T is sequentially connected with the start button P, the coil of the alternating current contactor KM and the normally closed contact of the thermal protector FR in series and then connected to a power supply end to form a loop; an auxiliary contact of the alternating current contactor KM is connected with the starting button P in parallel;

the oil pump motor electrifying main loop 2 comprises an air switch QF, an alternating current contactor KM and a thermal protector FR which are sequentially connected in series; the thermal protector FR is connected with the oil pump motor, and the air switch QF is connected with the power supply. When the starting button P is pressed, the coil of the alternating current contactor KM is electrified, so that the oil pump motor is electrified, the alternating current contactor KM of the main loop works in a suction mode, and an electrified power supply is provided for the oil pump motor.

The three-position four-way valve work control loop 3 comprises a connecting switch K, an isolation transformer B, an intermediate relay KM1 and an intermediate relay KM 2; the input end of the isolation transformer B is connected with a switch K, and the connection switch K is connected with a 220V power supply; the output end of the isolation transformer B is connected with an intermediate relay KM1 and an intermediate relay KM 2; the intermediate relay KM1 and the intermediate relay KM2 are connected in parallel, and a normally open contact K1 of the intermediate relay KM1 and a normally open contact K2 of the intermediate relay KM2 are respectively connected with a left coil and a right coil of the three-position four-way valve D.

The three-position four-way valve work control loop 3 also comprises an emergency stop button T1, a button P1, a button P2, a limit switch SQ1 and a limit switch SQ 2; the emergency stop button T1 is connected with one ends of a button P1 and a button P2, the other end of the button P1 is connected with a limit switch SQ1 in series, and the other end of the button P2 is connected with a limit switch SQ2 in series; the limit switch SQ1 and the limit switch SQ2 are respectively connected in series with a coil of the intermediate relay KM1 and a coil of the intermediate relay KM 2; the other ends of the coil of the intermediate relay KM1 and the coil of the intermediate relay KM2 are connected with an isolation transformer B.

The three-position four-way valve working control loop 3 also comprises a handle SB; the button of the handle SB is connected to both ends of the button P1 and the button P2; the handle SB has the same functions as the button P1 and the button P2, namely, the left coil or the right coil of the three-position four-way valve can be controlled to be electrified when the button is pressed down, so that the three-position four-way valve can be operated to realize the required functions.

When the button P1 or the button P2 or the button of the handle SB is pressed, the coil of the intermediate relay KM1 or KM2 is electrified and attracted by the 220V power supply through the isolation transformer B, the emergency stop button T1, the button P1 or the button P2 or the handle SB, the limit switch SQ1 or the limit switch SQ2, so that the corresponding normally open contact K1 or K2 of the intermediate relay KM1 or the intermediate relay KM2 is closed, the left coil or the right coil of the three-position four-way valve D is electrified and works, the action of the three-position four-way valve is controlled, and the required function is completed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical control device of a hydraulic station is characterized by comprising an oil pump motor start-stop control loop and an oil pump motor electrifying main loop; the oil pump motor start-stop control loop and the oil pump motor electrifying main loop are arranged in parallel and are connected to a power supply end;

2. The electrical control apparatus of a hydraulic station as claimed in claim 1, further comprising a three-position four-way valve operation control circuit; the three-position four-way valve work control loop comprises a connecting switch K, an isolation transformer B, an intermediate relay KM1 and an intermediate relay KM 2; the input end of the isolation transformer B is connected with a switch K, and the connection switch K is connected with a power supply; the output end of the isolation transformer B is connected with an intermediate relay KM1 and an intermediate relay KM 2; the intermediate relay KM1 and the intermediate relay KM2 are connected in parallel, and a normally open contact K1 of the intermediate relay KM1 and a normally open contact K2 of the intermediate relay KM2 are respectively connected with a left coil and a right coil of the three-position four-way valve D.

3. The electrical control device of hydraulic station as claimed in claim 2, wherein said three-position four-way valve operation control circuit further comprises an emergency stop button T1, a button P1, a button P2, a limit switch SQ1 and a limit switch SQ 2; the emergency stop button T1 is connected with one ends of a button P1 and a button P2, the other end of the button P1 is connected with a limit switch SQ1 in series, and the other end of the button P2 is connected with a limit switch SQ2 in series; the limit switch SQ1 and the limit switch SQ2 are respectively connected in series with a coil of the intermediate relay KM1 and a coil of the intermediate relay KM 2; the other ends of the coil of the intermediate relay KM1 and the coil of the intermediate relay KM2 are connected with an isolation transformer B.

4. A hydraulic station electrical control apparatus as claimed in claim 3 wherein said three-position, four-way valve operational control circuit further comprises a handle SB; the button of the handle SB is connected to both ends of the button P1 and the button P2; the handle SB has the same functions as the buttons P1 and P2.