JPS58183586A - Pendant switch for operating crane, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pendant switch for operating cranes, hoists, etc., which can be used not only to operate cranes, etc. for traveling, traversing, hoisting, and lowering, but also to control external equipment by mounting a microcontroller on the switch. It is also possible to check the usage status, etc.

Conventionally, pendant switches for operating cranes, etc. are equipped with a large number of switches, and electrical or optical signals from these switches are transmitted to the crane side via cables, etc., or are transmitted as radio signals for running, traversing, hoisting, and lowering. It was operated so that operations such as these could be performed. Therefore, it has been impossible to check the usage status of external devices (such as motors), such as the number of operations and frequency of use, on the pendant switch side.

In view of this, the present invention has a pendant switch equipped with a control unit that allows not only various operations of the crane but also checks of external equipment such as the motor to be carried out on the pendant switch side, providing safety to all functions. It is also intended to be easy to maintain.

The present invention will be explained below based on illustrated embodiments.

In the figure, l is the main body case of the pendant switch, and from the viewpoint of operability, it is desirable to have a shape that allows the operator to hold it with one hand and operate the push button switch. If this is achieved, shapes other than those shown may be used.

The main body case 1 may be made of any material that can withstand use as a pendant switch, such as iron plate, light alloy such as aluminum, or synthetic resin. A cable 2 is connected to the main body case for transmitting operation signals from the push button switches to external equipment provided on the crane main body, such as a hoisting/lowering motor, a traveling motor, and a traversing motor.

In addition to the pushbutton switch group 8 for operating external devices, the main body case l includes a selection switch group 4 for detecting all the operating conditions of external devices, and the display caused by the operation of the selection switch is displayed on a digital display. Do what you do. For ease of operation, it is desirable to provide this display, selection switch, etc. on the main body case on the same side as the push button switch group, but it is also possible to provide it on the main body case on a different side from this selection switch and the digital display section 5Fi push button switch. . In addition, an electronic circuit 6 for controlling, calculating, and storing information, a temperature sensor 7, and a shock sensor 8 are also built into the main body case l.

This electronic circuit 6 is organically connected to the push button switch, selection switch, digital display sensor, and external device power control circuit 9.

Therefore, when a crane or the like is operated by operating the push button switch 8, this operation signal is transmitted to the external device 10 via the external device power control circuit 9, and the desired operation is performed, and the signal indicating the number of times the switch 8 is operated is electronically It is sent to the circuit 6, and the count of the number of operations and the frequency of use are stored. Signals from the temperature sensor 7 and impact sensor 8 inside the pendant switch case are also sent to the electronic circuit 6, where they are stored, played, etc. At the same time, data on the current value of the power circuit is also sent from the external device power control circuit 9 to the electronic circuit 6, where it is compared with data stored in advance in the circuit, and if it is greater than a specified value, the number of times and frequency is determined. , and data are stored.

The signals from each sensor 7.8 are also sent to the electronic circuit as mentioned above, where they are compared with pre-stored data, and if they are above a specified value, the data, number of times, and frequency are stored. . Furthermore, by incorporating a clock circuit into the electronic circuit 6, the time can also be displayed on the digital display section.

Although it is desirable to store all data on the number of times and frequency based on signals from the external device power circuit and each sensor, it is also possible to store only a part of it, and it is also possible to omit each sensor. can.

As mentioned above, when operating a crane, etc., if a load, etc. that exceeds a safe value is applied to an external device, it is compared with the data stored in the electronic circuit and a warning is issued, so that the crane can be used within the safe range. can. Also, since this load value is stored in an electronic circuit, by pressing the selection switch later, the previous usage status of the crane will be digitally displayed, allowing detection confirmation.

Similarly, the usage status of the pendant switch is detected by the temperature sensor and shock sensor and stored in the electronic circuit, so this data can also be selectively detected and confirmed on the digital display.

According to the present invention, the signal from the pendant switch is applied to the electronic circuit to perform a memory comparison function, thereby allowing the necessary data to be displayed on the digital display section by operating the selection switch provided on the case body. Since detection and confirmation can be performed, the usage status of the crane, etc. can be accurately grasped, and at the same time, it can be used safely and has the advantage of being useful for maintenance.

[Brief explanation of drawings]

FIG. 1 is a schematic external view, and FIG. 2 is a block diagram. 1601 body case, cable 800. Push button switch group 4600 selection switch group 501. Digital display section 6. ,,X child circuit 791. Temperature sensor 816. Shock sensor 901. External device power control circuit 10, External device patent applicant Shinko Deniso Co., Ltd. 1 person (7)

Claims (1)

[Claims] An electronic circuit, a temperature sensor, and an impact sensor are provided in the case body of a pendant switch for operating a crane, etc., and a selection switch and a digital display are provided on the outer surface of the case body, and the above sensor, electronic circuit, and external power control circuit,
A pendant switch for operating a crane, etc., which is organically connected to a push button switch, etc., and is capable of selectively displaying necessary data stored in an electronic circuit.