JPS60158086A - Concrete bucket switchgear - 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 concrete packet opening/closing device, and more particularly to an rM closing device that opens and closes packets from a distance without meter control.

Conventionally, for example, when pouring concrete to create the dam body at a dam construction site, the packets filled with concrete were lifted up by a crane or the like and moved to the designated pouring location, and the packets were opened and closed using air cylinder valves. A pull string was attached to the container, and the concrete inside the packet was discharged by operating this string.

However, such an opening/closing mechanism has the following problems.

In other words, since the opening and closing of the packets is done directly by the worker, it is extremely dangerous, such as concrete being scattered when opening and closing the packets, or the packets jumping as the load becomes lighter as the concrete is discharged, and work efficiency is also reduced. It was bad.

In addition, normally, concrete in a packet is not only discharged all at once, but it is also necessary to check the pouring situation or to pour concrete in a specific narrow place. In addition, manually opening and closing each time increases the risk and reduces work efficiency.

Furthermore, it was sometimes forgotten to close after concrete was discharged, which caused various problems.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a concrete packet opening/closing device that is safe and has good operability.

In order to achieve the above object, the present invention provides a concrete packet that opens and closes a valve body interposed in a fluid path by wireless control, and which is driven by the wireless control and
The present invention is characterized by comprising a plurality of relays that open the valve body only when simultaneously driven, and a timer that automatically closes the valve body when a predetermined time has elapsed since the valve body was opened.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings.

1 to 3 show an embodiment of a concrete packet lFl1w1 apparatus according to the present invention.

FIG. 141 is an explanatory diagram showing the entirety of the opening/closing device according to the present invention. 12.
12 can be freely opened and closed by controlling a pair of air cylinders 14, 14 attached to the main body 10 by air and electric circuits to be described later.

The telescoping plungers 14a, 14a of the air cylinders 14.14 are respectively latched to the movable lids 12, 12 so as to close the packet body 10 in an extended state and open it in a retracted state. It has become.

The packet body 10 also has a cover 16 surrounding it.
III, and a removable hanging fitting 18 is provided at the top for hanging with a crane or the like.
At the lower end of the cover 16, there are a plurality of protrusions 22 that protrude downward and are positioned by fitting into the recesses of the pedestal 20 used when pouring concrete to be placed into the packet body 10.
．． 22 is fixedly installed, and the cover 16 and the main body 1
A tank 24 for supplying air at a predetermined pressure to the air cylinders 14 and 14 is housed in the space between the concrete packet and the pedestal 2.
When placed at a predetermined position on the cover 16, the fluid coupling 26 attached to the lower end of the cover 16 is coupled to the surface, and air at a predetermined pressure is supplied at any time via a near compressor installed on the pedestal 20 side. Ru.

For this reason, the movement when pouring concrete inside the packet body 10! 12.12's NrlJ@ installation is possible in a stable condition and without mounting a heavy compressor on the concrete packet.

FIG. 2 shows the air control circuit for the pair of air cylinders 14, 14 which open the concrete packet.

In the same figure, each air cylinder 14°14 is
The master pulp 3 is passed through the throttle valve 30 for adjusting the expansion and contraction speed.
This master pulp 32 is driven in the direction of the arrow via a check valve 40 by a solenoid valve 34 driven by a wireless IIIm, which will be described later. Valve 38.
38 are actuated at the same time, the check valve 40 is activated.

Incidentally, the reference numeral 42 in the figure indicates a pressure regulating device composed of an air filter or the like.

Next, regarding the operation of the solenoid valve 34 by wireless control,
The explanation will be based on the electric circuit shown in FIG.

The symbol @34a in FIG. 3A is a solenoid that drives the electromagnetic valve 34, and the symbol A schematically represents a receiver section that receives radio waves from the transmitter C, and each switch (SWI to
5W3) is the ON/OF on the transmitter C side shown in (b) of the same figure.
The transmitter C operates in response to the F and OPEN pushbutton switches, and the transmitter C has a built-in oscillation circuit and is carried by the worker.

In other words, when the ON switch of transmitter C is pressed, relay RY1 operates via SWl, and when the OFF switch is operated, SW
2, relay RY2 is activated, and relay RY3 is activated by the same operation. The contacts of these relays RY1 to RY3 are incorporated in a control circuit (not shown in Figure B), and white circles in the figure represent normally open contacts, and black circles represent normally n contacts, respectively.

In this vIIj circuit B, first, when the ON switch on the transmitter C side is pressed, the relay RY1 operates as described above, and thereby the relay RY4 operates and maintains itself. As a result, the lamp L lights up, warning the worker that concrete will now be discharged.

Then, when the switch is pressed during transmitter C, relay R
Y3 operates, the solenoid 34a is energized, and the solenoid valve 34
, the master valve 32 in FIG. 2 is moved in the direction of the arrow, the air cylinder 14 14 is driven to discharge concrete from the packet body 10, and the relay S! is activated by the operation of the relay RY3. Relay RY5 operates through the normally closed contact of 1RY6 and maintains itself.

Here, the solenoid valve 34 that drives the air cylinder 14.14
, the power supply to the solenoid 34a is connected to the relay RY3.
This occurs only when RY4 is operated simultaneously, that is, when transmitter C is turned on and the same switch is operated at the same time.

Then, as the relay RY5 operates, the timer (2) is started, and the relay RY6 operates and maintains itself to disconnect the solenoid 34a and the relay RY5.

This timer T operates after a set time, opens the operating circuit of the relay RY4, and the power supply to the solenoid 34a is stopped, so that the air cylinders 14, 14 are retracted and the packet body 10 is stopped 1jJI.

On the other hand, when the concrete is being discharged from the packet main body 10 or when the concrete discharge is completed, if the OFF switch of the transmitter C is pressed,
The relay RY4 is opened by the operation of the relay RY2, and the packet main body 10 can be closed in the same way as when the timer T is activated.

Furthermore, when the open switch of the transmitter C is opened while concrete is being discharged from the packet body 10, the operation of the relay RY3 is stopped, the packet body 10 is closed and discharge can be interrupted, and the amount of concrete discharged can be adjusted. Become.

In this case, the power transmission to the timer king is not stopped because the solenoid 34a and the relay RY5 are disconnected as described above, and no matter how many times the concrete is discharged from the packet body 10 and interrupted, The timer T can be operated reliably after the set ftl1il has elapsed since the timer T was started.

Note that the symbol E in J3 in FIG. 3 indicates each relay RY1 to R.
This is a drive iI source battery such as Y6.

In addition, the following modulated waves should be used as the radio waves between the above transmitter and receiver OA in order to prevent interference with commonly used radio waves, ship radio waves, or radio waves such as those caused by lightning that occurs in the natural world. is preferred.

The basic carrier frequency is 70 to 92 MIIz, the subcarrier frequency is 55 to 97.5 kHz, and the tone frequency is 85
The frequency is 0 to 1200Hz.

As is clear from the above explanation, in the concrete packet nm device according to the present invention, since the opening and closing of the packet is performed by wireless control from a distance, there is no need to approach the packet as in the conventional case, and there is no need to approach the packet when discharging concrete. The danger from scattering can be completely eliminated.

Further, since discharge is possible only when a plurality of relays are in operation, concrete is prevented from being discharged at locations other than the pouring site due to erroneous operation or dropping of the transmitter, further increasing safety.

Furthermore, since the discharge of concrete from the packet can be adjusted by wireless control, it is possible to reduce jumping due to changes in load during discharge, ensuring greater safety, and it is possible to discharge small amounts while checking the placement condition. Pouring in specific narrow places can be done stably and reliably, improving the reliability of construction work.

Furthermore, since the concrete packet is reliably closed after a predetermined period of time has elapsed from the start of discharge, problems caused by forgetting to close the discharge volume can also be eliminated.

[Brief explanation of drawings]

Figure 1 is an overall view of the concrete packet, Figure 2 is a diagram explaining the operation of the air cylinder, and the third cause is the solenoid valve 1i.
It is an electrical circuit diagram for IJIII. 10... Packet body 14. Old... Air cylinder 24... Air tank 3o. Old... Throttle valve 32... Master valve 34... Solenoid valve 36 ...Three-way switching valve 38...
Manual valve 40... Check valve 42...
Pressure regulator A...Receiver section B...
...Control circuit RYI-RY6 ...Relay SW1-SW3 ...Switch T ...Timer L ......
Lamp patent applicant Obayashi Gumi Co., Ltd. Agent Patent attorney - Kensuke Shiro Figure 1 Figure 2

Claims (1)

[Claims] A packet opening/closing device for discharging and stopping concrete by opening and closing a valve body interposed in a fluid path by wireless control, the plurality of packet opening/closing devices being driven by the wireless control and opening and closing the valve bodies only when simultaneously driven. A concrete packet opening/closing device comprising: a relay; and a timer that automatically closes the valve body when a predetermined time has elapsed from the n-port.