JP2001248398A - Automatic sprinkler system for tunnel lining concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic sprinkler system for tunnel lining concrete capable of automating water sprinkling work for curing concrete, uniformly sprinkling water, and preventing a roadbed from becoming muddy by dropped curing water. SOLUTION: This system id provided with a work carriage 1 movable in a tunnel, a water sprinkling pipe 14 guided to be movable along a guide 11 disposed on the carriage 1 toward the tunnel, and formed along an arch form of the tunnel, water sprinkling nozzles 17 provided at a proper interval on the water sprinkling pipe 14, a drive mechanism 15 to move the water sprinkling pipe 14 to reciprocate along the guide 11, a supply water hose 16 connected to the water sprinkling pipe 14, a solenoid valve 33 provided in pipings of the supply water hose 16 and interlocked with the drive mechanism 15 to open/close a flow passage, and a drive control part 32 for the drive mechanism 15 and the valve 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic watering equipment provided to promote curing of concrete lining a tunnel.

[0002]

2. Description of the Related Art In order to cure concrete after casting, it is common practice to sprinkle water on the casting surface to promote the hydration reaction. In the case of the tunnel lining concrete, after the lining work, the concrete was not watered or watered through a hose manually. When watering curing is not performed, especially when it is not necessary to make the initial strength early, and when watering, it is necessary to develop the initial strength early.However, watering can increase concrete strength. Needless to say, it has recently been deemed necessary to sprinkle water after casting.

[0003]

However, since the watering work is performed manually as described above, a great deal of labor is required for the worker, and the burden is large. Because of the arched watering work on the ceiling surface, the watering was likely to be incomplete, and the falling curing water caused the roadbed to become muddy, requiring much labor to maintain and repair it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to automate a watering operation for concrete curing, to spread the water uniformly, and to prevent the roadbed from becoming muddy due to falling curing water. It is intended to provide an automatic watering facility for tunnel lining concrete.

[0005]

In order to achieve the above object, a watering apparatus according to the present invention is provided with a work carriage movable in a tunnel, and a work carriage movable in a tunnel direction along a guide disposed on the work carriage. And a sprinkler pipe formed along the arch shape of the tunnel, a sprinkler nozzle provided at an appropriate interval in the sprinkler pipe, and a drive mechanism for reciprocating the sprinkler pipe along the guide. And a water supply pipe connected to the water sprinkling pipe.

According to the present invention, it is possible to provide an electromagnetic valve in the pipe of the water supply pipe for opening and closing the flow path in conjunction with the drive mechanism, and a drive control unit for the drive mechanism and the electromagnetic valve.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
FIG. 3 shows a work cart equipped with the watering equipment according to the present invention. In the drawing, a work cart 1 is formed along a tunnel cross section, and its side and upper surfaces are connected and reinforced with each other via a brace 2, and a joist frame 4 a is provided on an upper portion of four framed columns 3. The work floor 4 is fixed via the work floor 4, and a watering equipment main body 5 described later is mounted on the work floor 4. A ladder 6 provided on one side of the work floor 4 can move up and down between the ground part and the work floor 4.

A self-propelled device 7 of a geared motor system is disposed below each of the columns 3 so that the carriage 1 can be moved along the longitudinal direction of the tunnel.

The working floor 4 is inclined to one side at a gradient of about 3% so that curing water falling on the working floor 4 flows down,
Water is collected by the downspout 8 arranged on the side of the inclined side to flow down to the lower part of the bogie, and furthermore, the waterproof sheet 9 is hung on both sides to cover both sides, so that the falling curing water falls directly to the roadbed. And drainage to waterways such as gutters through these drainage facilities.

FIG. 4 shows a main body 5 of the watering equipment arranged on the work floor 4. The equipment main body 5 includes a pair of guide rails 11 fixedly arranged along a tunnel direction along a plurality of outriggers 10 along both upper sides of the work floor 4, and both sides of the pair of guide rails 11 via rollers 12. Sprinkler pipe 14 installed and guided movably in the direction of the tunnel
And a reciprocating drive mechanism 15 of a wire moving type which is connected to the sprinkler pipe 14 to move the sprinkler pipe back and forth, and a water supply hose 16 connected to the sprinkler pipe 14.

The water sprinkling pipe 14 is formed in an arch shape along the ceiling of the tunnel, and a large number of water sprinkling nozzles 17 are provided at appropriate intervals above the arch surface. It sprays and cures water.

The drive mechanism 15 includes a fixed guide 18 made of U-shaped steel fixedly disposed on the work floor 4 in parallel with the guide rail 10, a pulley 19 bearing on both sides of the guide 18, and a pulley 19. Guide wire 20 wound around
And a traveling motor 22 which is connected to both ends of the wire 20 to move back and forth in the guide 18 and is connected to a substantially center of the water sprinkling pipe 14 via a connecting portion 22a. And a pulley 24 at the lower side of the guide 18 and connected to the wire 20 via a plurality of weights 23 to constantly apply a predetermined tension to the wire 20;
8 are provided with limit switches L1 and L2 for motor reverse rotation fixedly arranged at both ends.

As shown in an enlarged view in FIG. 5, the traveling carriage 22 has a pair of traveling wheels 26 disposed in front and rear of a lower portion of a plate 25 and fixed with nuts. The connecting portion 22a is erected, and hook holes for the wire 20 are formed in the front and rear portions, and both ends of the wire 20 are locked in the holes. As shown in the figure, the tension can be adjusted by connecting the wire 20 to one hook end not directly but via a turnbuckle 27 so as to be adjustable in length.

As shown in the enlarged view of FIG. 6, the joint between the water sprinkling pipe 14 and the water supply hose 16 is connected to a cheese 28 and an elbow pipe 29 connected to the water sprinkling pipe 14 via a hose joint 30 called a bamboo shoot. To the water supply end of the water supply hose 16.

As shown in an enlarged view in FIG. 7, the nozzle 17 has a nozzle body 33 mounted on a nipple 31 attached to a water sprinkling pipe 14 via a bushing 32.

At the watering site, it is important to determine the nozzle diameter, the distance between the nozzle and the lining surface, and the nozzle pitch in consideration of the watering speed. For example, if the distance is too small, water flows down to the roadbed, If the roadbed is soiled, and if it is too wide, there will be a gap between the spraying areas, so due to the trial error at the actual watering site, the nozzle size, water pressure, watering speed, etc.
What is necessary is just to seek the optimal value.

FIG. 8 shows the electrical configuration of the equipment main body 5 described above. A control panel 32 for controlling each part is disposed at an appropriate position on the work cart 1, and includes a power stage provided with various switches and a motor control panel.

When the bogie 22 hits the limit switches LS1 and LS2, the drive motor 21 of the wire 20 detects this state, and alternately supplies a positive phase current and a negative phase current to the motor control panel. Thus, the carriage 22 travels in the opposite direction each time it moves to the end of the guide 18, and repeats the reciprocating operation. The watering operation is performed by the water supply hose 16.
This is performed by opening and closing an electromagnetic valve 33 arranged in a water supply pipe connected to the water supply pipe.

A switch SW1 arranged at the power supply stage of the control panel 32 is a timer switch for all power supplies, a switch SW2 is a timer switch for setting a watering interval, and SW
Reference numeral 3 denotes a timer switch for setting a watering time. The moving mechanism 15 can be activated by an input operation of the switch SW1, and thereafter, by a setting operation of the switches SW2 and SW3.
The opening and closing interval and operation time of the valve 32 are set, the valve 32 is opened while driving the moving mechanism 15, and the watering operation is repeated at the set time and the set time interval.
All work is paused.

As described above, all watering work is performed on the control panel 3
By the operation of the switch 2, it is possible to perform the automatic operation, and to perform the watering curing of the lining concrete by the optimum and uniform watering operation.

[0021]

As is apparent from the above description, according to the present invention, the watering operation is automatically performed, so that labor can be saved, and since the work is made uniform, reliable curing is performed. I can do it.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a work vehicle equipped with a watering equipment main body.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view of the work floor portion.

FIG. 4 is a perspective view showing the entire configuration of the equipment main body.

FIG. 5 is an enlarged view of a portion A in FIG. 4;

FIG. 6 is an enlarged view of part B of FIG.

FIG. 7 is an enlarged view of part C of FIG.

FIG. 8 is an explanatory diagram illustrating an electrical configuration of a facility main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Working cart 5 Sprinkling equipment main body 11 Guide rail 14 Sprinkling pipe 15 Reciprocating drive mechanism 16 Water supply hose 17 Nozzle 32 Control panel (control unit) 33 Electromagnetic valve

Claims (2)

[Claims] 1. A work vehicle movable in a tunnel, and a sprinkler pipe guided movably in a tunnel direction along a guide arranged on the work vehicle and formed along an arch shape of the tunnel. And a sprinkling nozzle provided at appropriate intervals in the sprinkling pipe, a drive mechanism for reciprocating the sprinkling pipe along the guide, and a water supply pipe connected to the sprinkling pipe. Automatic watering equipment for tunnel concrete. 2. An electromagnetic valve in a pipe of the water supply pipe, which opens and closes a flow path in conjunction with the drive mechanism, and a drive control unit for the drive mechanism and the electromagnetic valve. Item 6. An automatic watering equipment for tunnel lining concrete according to Item 1.