KR950010722B1 - Tester for crane moment limiter - Google Patents

Abstract

an internal operation unit having a lever which operates boom length and angle and swing angle in a crane and for outputting the operation of level as an electrical signal; an internal and external select unit connected to the internal operation unit, the crane and a moment limiter, for supplying data on the boom length and load to the moment limiter; an internal output display unit connected to the internal and external select unit, for displaying an imitation signal outputted from the crane during a room operation; a drive circuit connected to the internal and external select unit, for amplifying the output signal from the internal and external select unit over a predetermined level; and a sensor and crane state display unit connected to the drive circuit, for displaying a signal value outputted from the internal and external select unit and displaying the boom length and angle corresponding to the signal value.

Description

Tester for Crane Moment Limiter

1 is a block diagram showing the overall configuration of the tester for crane moment limiter according to the present invention.

2 is a block diagram of the internal operation unit of FIG.

3 is a block diagram of the internal and external selection unit of FIG.

4 is a configuration diagram of the internal output display unit of FIG.

5 is a configuration diagram of a driver circuit, a sensor, and a crane status display unit of FIG.

6 is an embodiment showing the appearance of a crane moment limiter tester according to the present invention.

* Explanation of symbols for main parts of the drawings

100: crane 200: moment limiter

300: internal operation unit 400: internal and external selection unit

500: internal output display unit 600: drive circuit

700: Sensor and crane status display unit

The present invention relates to a device for testing the performance of the moment limiter of the crane, and more particularly, the crane moment limiter to test the experiment according to the development of the moment limiter of the crane in a simple operation in the room without installing the actual load It is about a dragon tester.

In the prior art, in order to test the performance of the crane moment limiter in development, the crane must be loaded with the load as in actual operation, and then the crane must be operated to perform the test.

Therefore, if the function is not complete during the test of the crane moment limiter, there is a risk of overturning of the crane and the damage of the driver, etc., so the test of the crane moment limiter was very dangerous.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is not to mount a load directly on a crane during the test of a crane moment limiter, but to set each load such as the length, angle, swing angle and moment of the load and boom. In order to test the performance of the crane moment limiter indoors by using the data values, the tester for the crane moment limiter is provided.

In order to achieve the above object, the present invention is provided with a moment limiter installed on the crane to limit the length, angle, load, etc. of the crane boom, so that the length, angle and swing angle of the boom in the crane can be manipulated. An internal operation unit configured to output the operation of the lever as an electrical signal, and a signal output from the internal operation unit connected to the internal operator unit, the crane and the moment limiter, and input to the crane. An internal and external selection unit that provides data such as the length, angle, and load of the boom to the moment limiter by selecting whether to directly test or test the output value of the internal operation unit indoors; It is connected to the board and the X tunnel selection unit and output to the crane during indoor operation. An internal output display unit for displaying a simulated signal, a drive circuit connected to the internal and external selection unit to amplify a signal output from the internal and external selection unit to a predetermined level or more, and the drive circuit. It is characterized by the tester for the crane moment limiter, which is connected to the sensor and the crane status display unit to display the signal value output from the internal and external selection unit and to display the length and angle of the boom according to this value.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the crane moment limiter tester of this invention is demonstrated in detail by an accompanying drawing.

First, Figure 1 is a block diagram showing the overall configuration of the crane moment limiter tester of the present invention, which is provided on the crane 100 provided with a moment limiter for limiting the length, angle, load, etc. of the boom of the crane 100 An internal operation unit comprising a lever capable of manipulating the length, angle and swing angle of the boom in the crane 100 and outputting the operation of the lever as an electrical signal, the internal operation unit and the crane It is connected to the 100 and the moment limiter 200 receives a signal output from the internal operation unit 300, and directly connected to the crane 100 for testing or indoors of the internal operation unit 300 The internal and external selection unit that provides the moment limiter 200 with data such as the length, angle and load of the boom by selecting whether to test the output value. 400, an internal output display unit 500 connected to the internal and external selection unit 400 for displaying a simulated signal output to the crane 100 during indoor operation, and the internal and X A drive circuit 600 connected to the tunnel selection unit 400 and amplifying a signal output from the internal and X tunnel selection unit 400 by a predetermined level or more, and connected to the drive circuit 600 to the internal and X signals; It consists of a sensor and a crane status display unit 700 to display the signal value output from the tunnel selection unit 400 and to display the length, angle, etc. of the boom according to this value.

2 shows an embodiment of the internal operation unit 300. The internal operation unit 300 is a two-contact text position, and the boom length, angle, swing angle, moment operation and win operation. A control lever 310 made of a lever and connected to the control lever 310 receive data according to each lever operation, and control the system by recognizing this input signal as a digital signal by the operation of an internal timer. CPU 320, a D / A converter 330 connected to the CPU 320 and converting the digital signal output from the CPU 320 to an analog signal and outputting the analog signal to the internal and external selection unit 400; Switch logic 340 connected to the CPU 320 to generate the same simulation signal as each data such as the actual boom length, angle, etc. during the X tunnel operation in accordance with the operation of the operation lever unit 310, and Connected to the CPU 320 Wins in the display 350 that displays the output data of the CPU (320) in accordance with the operation of the switch operation lever was done.

3 is a block diagram showing an embodiment of the internal and external selection unit 400 of FIG. 1, the selection switch 410 for selecting an internal or external operation mode, and a multi-stage relay (RYI-). RYN) is connected to the selector switch 410, the contact of each relay (RYI-RYN) is switched by the mode selection of the selector switch 410 to output the input and output signal of the crane 100 moment limiter 200 Or a relay array board 420 for connecting the internal output display unit 500 and the internal operation unit 300 to the moment limiter 200.

4 is a configuration diagram illustrating an embodiment of the internal output display unit 500 of FIG. 1, and is connected to the internal and external selection unit 400 so that the length, angle, swing angle, moment, etc. of the boom may be adjusted. An A / D converter 510 that receives power supplied to the sensor and converts the digital value into a digital value, a driver 520 that is connected to the A / D converter 510 and drives the digital value of each sensor to be input, and the driver A driver 540 for amplifying the signal by receiving the LED segment 530 which displays the value of each sensor amplified and input through the number 520 and the crane control output of the moment limiter 200, and the driver; And a weather actuator 550 for operating the alarm light and the alarm in accordance with the output of 540.

FIG. 5 is a diagram illustrating an embodiment of the driver circuit, the sensor, and the crane status display unit 700 of FIG. 1, and is connected to an output terminal of each sensor of the drive circuit 600 and provided in the drive circuit 600. A / D converter 710 for converting the signal into an analog signal, LED segment 720 for displaying the output of the A / D converter 710 numerically, and connected to the output of the drive circuit 600 is input A driver 730 for amplifying the signal, and LEDs 740 connected to the driver 730 for indicating the lighting state of the limiter switch to the crane 100 or the internal operation unit 300.

The present invention configured as described above includes an internal for selecting a signal detected by each sensor and a signal generated by the internal operation unit 300 directly from the crane 100 to test the performance of the moment limiter 200 of FIG. The signal is input to the moment unit through the X tunnel selection unit 400.

The internal and external selection unit 400 is composed of a lever to manipulate the length of the boom and the angle and swing angle of the boom in the crane 100, the operator of the tester arbitrarily applies the moment to the moment unit as an electrical signal can do.

In addition, the internal output display unit 500 similarly displays signals output to the crane 100 during indoor operation, and the drive circuit 600 outputs the output signal of each sensor of the crane 100 to the moment limiter 200. Signal amplification is performed to provide the display device without affecting the operation.

The sensor and crane status display unit 700 displays the output voltage or current of each sensor and displays the boom length, angle, and the like of the crane 100 corresponding thereto.

2 through 5, the CPU 320 of the internal operation unit 300 is a one-chip controller such as memory, external I / O, interrupt control, timer, and the like. Controls the execution of a function.

The CPU 320 has each sensor output value of the crane 100 corresponding to the signal generated by the operation of each lever of the operation lever unit 310, the boom and the upper portion of the crane 100 in the crane 100 The on and off states of the various limit switches whose state is determined by the operation of are determined. The state of these limit switches is input to the moment limiter 200, and during the internal operation, the same signals as those of the limiter switches should be generated and transmitted to the moment limiter 200, and the state of these limit switches is controlled by the operation lever unit 310. It is possible to cause the sensor output value to be input to the CPU 320 by the operation.

The operation lever 310 is composed of a boom length operation lever, a boom angle operation lever, a swing angle operation lever, a moment operation lever, and a wins operation lever. Each lever is, for example, a boom length operation lever in the neutral, boom extension, It has an input mode of boom lock, and it is necessary to keep the lever in the extended position when extending the length of the boom. The other levers are operated by the same lever so that the operation of each lever is input to the CPU 320 as an electric signal, and the CPU 320 recognizes and outputs the data input by the operation of the timer as a digital value. do.

The output data is converted into an analog signal through the D / A converter 330 so that data of boom length, angular internal and swing angle are transmitted to the internal and external selection unit 400.

On the other hand, the switch logic 340 generates the same mode signal as each data such as the actual boom length, angle, etc. during the operation of the axelon in accordance with the operation of the operation lever 310, the switch logic 340 is generally Thus, a buffer and a drive for driving the output of the buffer and a relay driven by the output of the driver are configured so that the relay is switched according to the output data of the CPU 320 and replaced by a signal of a limit switch.

The signal output from the switch logic 340 is input to the internal and external selection unit 400.

In addition, in the win display unit 350, output data according to the operation of the win operation lever output from the CPU 320 is displayed on the LED segment, and the win display unit 350 buffers the output data of the CPU 320 as an example. It can be configured as a buffer, LED driver and LED segment, and the LED segment can be set up at a constant level (for example, 0--9 or 0--20, etc.) to raise the Win control lever. In the UP position, the number increases, and in the DOWN position, the number decreases. When the display number reaches the value by setting the position where the wins are overwinded (for example, “9” or more or “20”), the information on the moment limiter 200 is transmitted through the internal and external selection unit 400. To pass on.

In the internal and external selection unit 400, whether the tester is operated by directly connecting the input and output signals from the moment limiter 200 to the crane 100, or generated from the internal operation unit 300. It accepts a signal and selects whether to output the moment unit output through the internal output display unit 500. That is, as in the circuit of FIG. 3, the contact connection state of each relay (RYI--RYN) of the relay array board 420 is simultaneously determined by the mode of the selection switch 410, and thus the input / output according to the internal or X tunnel selection is performed. The signal is passed to the moment limiter.

In the relay array board 420, P1 is a contact point to which a signal is transmitted to the moment limiter 200 when the selection switch 410 selects an X tunnel. P1 is a selection switch 410 that selects an internal. Is the contact point for input and output.

Also, P3 is an output terminal output from the relay array board 420 to the moment limiter 200 and is connected to P1 or P2 by the selection switch 410.

Therefore, each data output from the internal operation unit 300 as shown in FIG. 2 is output to the moment limiter 200 through the internal and external selection unit 400 of FIG. 3.

Meanwhile, the internal output display unit 500 processes signals output from the moment limiter 200 to each sensor and actuator (cylinder, valve, buzzer, etc.) of the crane 100 to output the normal of the moment limiter 200. The level is checked, and various output signals controlled by the signal input to the moment limiter 200 are transmitted to the internal output display unit 500 through the internal and the external selection unit 400.

That is, as shown in FIG. 4, signals of the boom length, angle, swing angle, and moment from the internal and external selection unit 400 are converted into digital signals through the A / D converter 520 and the driver 520. Through input to the LED segment 530 is displayed.

In addition, the control signal generated by the moment limiter 200 is output to each component of the crane 100, during the internal operation, the control signal is input to the driver 540 is input to the virtual actuator 550 An alarm will sound or the alarm will light.

The sensor and crane status display unit 700 displays information about the signal of the crane 100 or the signal generated by the Dean tunnel operation unit 300 which is amplified and input through the drive circuit 600. As such, the signal output from the internal X tunnel selection unit 400 is amplified through the drive circuit 600, and then converted into a digital signal through the A / D converter 710 and input to the LED segment 720 so as to provide a sensor for each sensor. The output value is displayed as a value of voltage or current, and on the other hand, the on / off state of the limiter switch of the crane 100 or the internal operation unit 300 is displayed by the LED state through the driver 730.

6 shows an embodiment in which the external appearance of the above-described tester for crane moment limiter of the present invention is configured.

In FIG. 6, B / L represents the length of the boom, B / A is the angle of the boom, S / A is the swing angle, A / S is the LED for displaying the autostop control signal, and TEL is the crane 100 boom. The telescoping control signal display of the LED, INT and EXT is to display the internal and the external of the selector switch 410 of the internal and external selection unit 400.

Each LED of the sensor and the crane status display unit 700 is for indicating the on and off status of the crane 100 limit switch.

As described above, the signals generated by the operation lever unit 310 of the internal operation unit 300 during the indoor test are selected from the internal and the external selection unit 400 and the internal and external signals. The moment limiter 200 is input to the moment limiter 200 through the X tunnel selection unit 400 to generate a control signal according to the input data. In addition, the output signal of the internal and the external selection unit 400 is input to the sensor and the crane status display unit 700 through the drive circuit 600, the data generated in the crane 100 or the internal operation unit 300 Is indicated on the LED segment as in FIG.

On the other hand, the output signal of the internal and external selection unit 400 is input to the internal output display unit 500, the value of each sensor is displayed on each LED segment 530 as in the configuration example of FIG. The control signal output from the moment limiter 200 drives the virtual actuator 550 to test the performance of the moment limiter 200.

As described above, the crane moment limiter tester of the present invention comprises an internal operation unit comprising a lever capable of manipulating the length, angle, and swing angle of the boom in the crane, and outputting the operation of the lever as an electric signal; It is connected to the internal operator unit, the crane and the moment limiter to receive the signal output from the internal operation unit, select whether to test by connecting directly to the crane or to test the output value of the internal operation unit indoors. An internal and external selection unit that provides data such as the length, angle, and load of the boom to the moment limiter, and a simulated signal output to the crane during indoor operation by being connected to the internal and external selection unit. Internal output display unit and the internal and external wires A drive circuit connected to the unit to amplify the signal output from the internal and external selection unit to a predetermined level or more, and the signal value connected to the drive circuit and output from the internal and external selection unit are displayed and displayed on this value. It is composed of a sensor that displays the length, angle, etc. of the boom, and a crane status display unit, so that the load, boom length, angle, swing angle, moment, etc. are not mounted directly on the crane during the test of the crane moment limiter. Using the data values for each setting, it is possible to test the performance of the crane moment limiter indoors.

Therefore, the test according to the development of the moment limiter can be performed indoors, so there is no need to load the actual crane, and even if the function of the moment limiter is incomplete, there is a risk of overturning the crane and damage to the driver's life. There will be no.

Claims (5)

The moment limiter is installed in the crane and restricts the length, angle, load, etc. of the crane. The lever is configured to control the length, angle, and swing angle of the boom in the crane 100. An internal operation unit 300 for outputting an operation as an electrical signal, connected to the internal operator unit 300, the crane 100, and the moment limiter 200, and output from the internal operation unit 300. It receives the signal and connects directly to the crane for testing or selects whether to test with the output value of the internal operation unit 300 in the room to the data of the boom length, thin, load, etc. to the moment limiter 200 It is connected to the provided internal and external selection unit 400 and the internal and external selection unit 400 is output to the crane 100 during the indoor operation It is connected to the internal output display unit 500 for displaying a simulated signal and the internal and external selection unit 400 to amplify a signal output from the internal and external selection unit 400 to a predetermined level or more. Sensor and crane connected to the drive circuit 600 and the drive circuit 600 to display the signal value output from the internal and external selection unit 400 and to display the length, angle, etc. of the boom according to this value Tester for crane moment limiter with status display unit (700). The control unit (310) according to claim 1, wherein the internal operation unit (300) is a two-contact type text switch and includes an operation lever (310) consisting of a boom length, an angle, a swing angle, a moment operation, and a winch operation lever. It is connected to the lever unit 310 and receives data according to each lever operation, and connected to the CPU 320 and the CPU 320 to control the system by recognizing this input signal as a digital signal by the operation of the internal timer. And a D / A converter 330 for converting a digital signal output from the CPU 320 to an analog signal and outputting the analog signal to an internal and an external selection unit 400 and the operation lever unit connected to the CPU 320. In accordance with the operation of the 310, the switch logic 340 which generates the same simulation signal as each data such as the actual boom length, angle, etc. during the operation of the X tunnel, and the CPU 320 is connected to the operation of the wins operation lever. Displays the output data of the CPU 320 Crane moment limiter tester made of a wins display unit 350. The selector of claim 1, wherein the internal and external selection unit 400 includes a selection switch 410 for selecting an internal or external operation mode and a multi-stage relay (RYI--RYN). The contact of each relay (RYI--RYN) is switched by the mode selection of the selection switch 410 to connect the input / output signal of the crane 100 to the moment limiter 200 or the internal output. A crane moment limiter tester comprising a relay array board (420) for connecting the display unit (500) and the internal operation unit (300) to the moment limiter (200). The display device of claim 1, wherein the interactive output display unit 500 is connected to an internal and an external selection unit 400 to receive power supplied to a sensor such as a boom length, an angle, a swing angle, and a moment. A / D converter 510 for converting to a digital value, a driver 520 for driving the digital value of each sensor connected to the A / D converter 510 and input, and amplified by the driver 520 Driver 540 for receiving and amplifying the crane control output of the LED segment 530 and the moment limiter 200, which displays the value of each sensor as a number, and an alarm lamp and an alarm according to the output of the driver 540. Tester for crane moment limiter with actuating virtual actuator (550). According to claim 1, wherein the sensor and crane status display unit 700 is connected to the output terminal of each sensor of the drive circuit 600 A / D for converting the digital signal provided from the drive circuit 600 into an analog signal A converter 710, an LED segment 720 which displays the output of the A / D converter 710 numerically, and a driver 730 connected to the output of the drive circuit 600 to amplify the input signal; A tester for crane moment limiter comprising LEDs 740 connected to a driver 730 to indicate a lighting state of a limiter switch to a crane 100 or an internal operation unit 300.