KR200182573Y1 - Test instrument for thyristor circuit unit of roof crane - Google Patents

Abstract

The present invention is a overhead crane electronic control circuit that performs hoisting or hoisting operations while traveling and traversing with tracks or rails installed parallel to the ceiling at regular intervals in a factory, warehouse or outdoor storage. The present invention relates to a test device for a THRISTOR circuit unit, and in the case of disassembly or repair of a conventional crane thyristor circuit unit or a PCB card that is incompletely repaired after being mounted on the crane, the operation of the crane is stopped. The present invention relates to a ceiling crane thyristor circuit unit testing apparatus that solves many problems such as a malfunction of equipment and workers due to malfunctions.

The construction includes a simulation control unit that performs driving, hinge, hoist, and various control operation functions under the same operating conditions that can be operated in the cab of a field crane, and a PCB which is a test drive, traverse, and hoist thyristor circuit unit. And a removable base and a driving, traversing, and hoisting thyristor circuit unit receiving an operation signal of the simulation operation unit, generate a control signal corresponding to the operation signal to operate a load, and A control detector having a function of detecting an operating state, a detection display unit for receiving a detection signal of the control detector and displaying a load state as various digital instrument panels and lamps, and a relay connected to the control detector and receiving a control signal to operate the relay. The relay unit having a function of connecting a load to the control detection unit, and the relay unit And a load unit comprising a motor for driving, traversing, and hoist operation, a magnetic brake, and a tacho generator operating as a control signal of the control detection unit.

Description

Ceiling Crane Thyristor Circuit Unit Tester

The present invention is a overhead crane electronic circuit that performs hoisting or hoisting operations while traveling and traversing with tracks or rails installed parallel to the ceiling at regular intervals in a factory, warehouse or outdoor storage. The present invention relates to a test apparatus for a THRISTOR circuit unit, and in particular, when the disassembly or repair of a crane thyristor circuit unit or an incompletely repaired PCB card is mounted on the crane and tested, the crane is stopped or the crane is stopped. There was a problem such as a malfunction caused by the occurrence of safety accidents in the facility and workers.

In this conventional technique, when an error occurs in the thyristors circuit unit of the overhead crane, the operator checks whether there is any abnormality and the corresponding repair measures in a state where the thyristors circuit unit is directly installed in the electrical room panel of the cab located at the top of the ceiling crane. There was a problem that the operation of the crane in the normal operation due to the test and repair work was hindered, and the burden and fatigue of the repairer increased, making it impossible to properly repair and test the equipment and leading to a safety accident and a facility accident.

The present invention improves the conventional problems as described above. The test device of the present invention does not directly test the faulty traveling, traversing and hoisting thyristor circuit units by mounting them on the electric room panel of the overhead cab of the field crane. Systematically and precisely analyze and search for each part for a sufficient time to prevent crane operation time, prevent equipment accidents and worker safety accidents, and inaccurate and partial tests using analog measuring equipment such as testers. Instead, the object of the present invention is to provide a ceiling crane thyristor circuit unit tester that connects various loads such as a thyristor circuit unit and a motor and a brake and checks the normal operation state of the thyristor circuit unit with a precise digital meter.

Table 1 shows the values displayed on the digital instrument cluster.

1 is a relay control circuit diagram of the present invention,

2 is a step control display unit included in the detection display unit of the present invention,

3 is a functional block diagram of the present invention,

Explanation of symbols on the main parts of the drawings

A1-A8, A10, A10A, A11-A13: Relay

M1: Magnet Contactor Relay M10: DC Magnet Brake Relay

M11: rotor magnet contact relay M12: rotor magnet contact relay

M13: Brake contact relay S1: Control start switch relay

10: simulation control unit 20: control detection unit

30: detection display unit 40: relay unit

50: load part

The present invention has been devised to solve the above problems, and the joystick, the control start switch, the control disconnect switch, and the NFB (No Fuse Breaker) for power supply are operated under the same operation conditions that can be operated in the cab of the field crane. ), An emergency switch, etc., and a simulation control unit capable of performing various adjustment tests, and a traveling, traversing and hoist thyristor circuit unit to be tested, and receiving operation signals from the simulation control unit. And a control detection unit for applying an operation signal to the hoist thyristor circuit unit, wherein the thyristor circuit unit generates a control signal corresponding to the operation signal to operate a load and detect an operation state of the load. Main power digital instrument, control power digital instrument, speed check digital instrument, Return display digital display board, load current display digital display board, ammeter, + 26V constant voltage display digital display board, + 15V constant voltage display digital display board, RPM display digital display board, main power indicator, control start / stop indicator And a digital display board and a lamp including a fuse / overload indicator lamp and various lamps, and a detection display unit for indicating a load state, and a relay connected to the control detector and receiving a control signal to operate a load and the control unit. A relay unit having a function of connecting a detection unit, a motor for driving, traversing, and hoist operation, a magnetic brake, and a tacho generator operated by a control signal of the control detection unit through the relay unit, and having a load having the same conditions as the site ( It consists of a load part consisting of Load).

Hereinafter, the drawings and the tables will be described.

1 is a circuit diagram of a relay control unit according to the present invention, FIG. 2 is a step control display unit included in the detection display unit, FIG. 3 is a functional block diagram of the present invention, and Table 1 is a normal diagram when using the test apparatus of the present invention. This is the display value of the digital instrument cluster measured by the working thyristor circuit unit.

Detailed description of the present invention with reference to the drawings and tables below, the simulation operation unit 10 of the function of performing the running, traverse, hoist function and various control operations under the same operating conditions that can be operated in the cab of the field crane, and failure The driving, traversing and hoisting thyristor circuit unit, which is equipped with a base for attaching and detaching the repaired test driving, traversing and hoisting thyristor circuit unit, and receiving the operation signal of the simulation control unit 10, receives the operation signal. A control detection unit 20 having a function of generating a control signal corresponding to the load and operating the load, and detecting the operation state of the load, and receiving a detection signal from the control detection unit 20, loads various digital substrates and lamps. The detection display unit 30 which displays the state of the control unit and the control detection unit 20 and the relay is operated by receiving a control signal to the load and the control inspection A relay unit 40 having a function of connecting the unit 20, and a motor, a magnetic brake, and a taco for driving, traversing, and hoist operation operated by a control signal of the control detection unit 20 through the relay unit 40. As a generator (Tacho Generator) is configured to include a load unit 50 consisting of a load (Load) of the same conditions as the site.

Referring to FIGS. 1 and 3, when power is supplied to the test equipment by manipulating NFB (No Fuse Break) of the simulation manipulation unit 10, and driving the control start switch SW1, the relay unit 40 The master relay A1 operates, the forward stop relay A4, the reverse stop relay A5, the operation confirmation relay A7, and the selector switch relay A10 operate, and the power signal relay A8 operates. The power magnet contact M1 operates, and among the digital instrument panel of the detection display unit 30, the main power instrument panel is 440V as shown in Table 1, the control power instrument panel is 220V, and the remaining instrument panel is displayed as "0".

When the unillustrated joystick of the simulation manipulation unit 10 is driven to the first position of the forward direction, the C-relay, which is not shown, of the control detection unit 20 is operated, and the forward portion UP of the relay unit 40 is operated. The relay A2 operates, the power unsignal relay A6 operates, the brake unsignal relay A10A operates, the brake magnet contact M10 operates, and the rotor 1 step unsignal relay A11 operates. The rotor one-step magnet contact M11 is operated. At this time, the UP direction and the CSTOP lamp of FIG. 2 operate to confirm whether the first stage is correct. When operating in the reverse direction 1 stage, the reverse DOWN RELAY (A3) operates instead of the forward UP RELAY (A2), and the remaining relays and magnet contacts operate the same, and the reverse (DOWN) instead of the UP lamp of FIG. Make sure the ramp is working and the reverse selection is correct. At this time, the digital display panel of the detection display unit 30 has a speed confirmation value of 2-3V, a speed feedback value of 13-14V, a + 26V constant voltage value of 23-26V, a + 15V constant voltage value of 13-15V, and an RPM value. 220-240 is displayed. When operating in the reverse first stage, the values displayed on the digital instrument panel of the detection display unit 30 are the same as those of the first forward stage.

When the joystick lever of the simulation operation unit 10 is operated two steps in the forward direction, a C-relay and a two-step relay (not shown) of the control detection unit 20 operate, and the forward (UP) relay of the relay unit 40 operates. (A2) operates, and the remaining relays A6, A10A, and A11 and the magnet contacts M10 and M11 maintain the same state as the first stage. At this time, it is possible to confirm whether the two-stage selection is correct by operating the UP direction and the second lamp of FIG. 2. In the digital instrument panel of the detection display unit 30, as shown in Table 1, 4-5V as the speed confirmation value, 26-29V as the speed feedback value, 23-26V as the + 26V constant voltage value, and 13-15V as the + 15V constant voltage value , RPM values are displayed as 440-480. When operating in the reverse two stages, the reverse relay A3 operates in place of the forward relay A2, and the remaining relays operate in the same manner as the forward two stages, and the lamp shown in FIG. DOWN ramps instead of UP, and the values displayed on the digital instrument cluster are the same.

When the joystick lever (not shown) of the simulation control unit 10 is operated three steps in the forward direction, an unshown C-relay, a two-step relay and a three-step relay of the control detection unit 20 operate, and the relay unit 40 is operated. UP relay A2 operates, rotor 2-step relay A12 operates, rotor 2-step magnet contact M12 operates, and the remaining relays A6, A10A and magnet contact M10. ) Remains the same as the first stage. At this time, the UP direction and the third lamp of FIG. 2 operate to confirm whether the three-stage selection is correct. On the digital instrument panel of the detection display unit 30, as shown in Table 1, the speed confirmation value is 6-8V, the speed feedback value is 53-58V, the + 26V constant voltage value is 23-26V, and the + 15V constant voltage value is 13-15V, RPM value. 880-960 is displayed. When operating in the reverse three-stage, the reverse (A) relay (A3) operates in place of the forward (UP) relay (A2), the values displayed on the digital instrument panel of the detection display unit 30 is the same as when operating in three forwards 2, the lamp display of FIG. 2 operates in the reverse direction instead of the UP direction.

When the joystick lever of the simulation manipulation section 10 is operated in the fourth direction in the forward direction, an unshown C-relay, a two-step relay, a three-step relay, a four-step relay of the control detection unit 20 operate, and the relay controller 40 UP relay A2 operates, rotor 3 step relay A13 operates, brake contact M13 operates, and the remaining relays A6 and A10A and the magnet contact M10 Stay the same. In this case, it is possible to confirm whether the fourth stage is correct by operating the UP direction and the ramp 4 of FIG. 2. The digital instrument panel of the detection display unit 30 returns 9-11V and the speed is returned as shown in Table 1 below. The value is 66-72V, the + 26V constant voltage value is 23-26V, the + 15V constant voltage value is 13-15V, and the RPM value is 1,100-1,200. When operating in the reverse 4 stages, the reverse (A) relay (A3) operates in place of the forward (UP) relay (A2), and the values displayed on the digital instrument panel of the detection display unit 30 are the same as when operating in the 4 forward directions. The ramp of FIG. 2 operates in the DOWN direction instead of the UP direction. The FUSE FAULT lamp of FIG. 2 is turned on when the fuse is disconnected, and the OVER SPEED lamp is turned on when the motor connected to the load is operated at the RPM value higher than the set limit value.

The digital display values corresponding to each of the four stages are shown in Table 1. If the result of testing the thyristor unit installed in the base of the control detection unit 20 is as shown in Table 1, the test is completed and passed. If not, it will be treated as defective. Therefore, it is not necessary to directly insert and install the PCB card of the repair or incomplete repair of the thyristor circuit unit in the cab of the field crane as in the prior art.

Table 1. Values displayed on the digital instrument panel

Forward / Reverse Speed confirmation value Velocity feedback + 26V constant voltage value + 15V constant voltage value RPM value Etc Step 1 2 to 3 V 13-14V 23 to 26 V 13-15V 220 to 240 Initial display value Main power: 440 V Other instrument substrates: "0" Control power: 220 V Step 2 4-5V 26 to 29 V 23 to 26 V 13-15V 440-480 Step 3 6 to 8 V 53 to 58 V 23 to 26 V 13-15V 880-960 Step 4 9-11V 66 to 72 V 23 to 26 V 13-15V 1100-1200

By using the test device of the present design, it is possible to prevent the operation operation time of crane or to prevent the accident of the facility and the safety accident caused by the operator's error in advance, and the productivity improvement effect and the trouble-lifting ceiling crane thyristor circuit unit Long-term test results in improved reliability and maintenance workers' psychological stability.

Claims (1)

A simulation control unit that performs driving, traversing, hoisting and various control operations of the overhead crane; A control detection unit equipped with a test thyristor circuit unit and receiving a control signal of the simulation control unit and generating a control signal to operate the load and detect an operation state of the load; A detection display section having a function of receiving and displaying a detection signal of the control detection section; A relay unit receiving a control signal of the control detection unit to operate a relay to connect a load to the control detection unit; And a load unit operating as a control signal of the control detection unit through the relay unit.