JP2727371B2 - Method and apparatus for treating underwater concrete joint surface - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating an underwater concrete joint surface using a water jet.

[Conventional technology]

Underwater concrete that hardens in the water has been recently developed. When constructing a small-scale underwater concrete structure, it is usually necessary to finish the underwater concrete casting once so that no joint surface occurs. I have.

However, when the scale of the underwater concrete structure is large, the amount of the underwater concrete to be poured is extremely large. At present, the amount of underwater concrete poured at one time is about 5,000 m ³ at the maximum, so when placing more underwater concrete, the underwater concrete is inherited.

Further, when a large amount of underwater concrete is poured, particularly when a large amount of underwater concrete is poured in deep water, it is conceivable that the concrete is poured all at once in a day and night.

[Problems to be solved by the invention]

When submerging underwater concrete, the surface of the already submerged concrete must be subjected to latency treatment.

Further, when a large amount of underwater concrete is to be poured at once in a day and night, the size of the casting device becomes extremely large and the management of the casting work becomes very difficult. For example, there are major problems such as how to control heat generation from a large amount of concrete and how to suppress shrinkage when a large amount of underwater concrete hardens.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a processing method and a processing apparatus which can easily perform a processing of a joint surface when joining underwater concrete.

[Means for solving the problem]

In order to achieve the above object, in the method for treating an underwater concrete joint surface according to the present invention, a hood 3 having a downward opening is attached to a traveling vehicle 2 having an operation control device 1 and a drainage hose is attached to the hood 3. The underwater concrete shaving vehicle 6 is connected to the underwater concrete connecting surface 7 by connecting a lower end of the underwater concrete 4 and providing a nozzle 5 for injecting a water jet downward in the hood 3 so as to pivot. Then, an operation signal from the remote control device 8 on the ground is transmitted to the operation control device 1, and the underwater concrete shaving vehicle 6 is driven by the operation signal of the operation control device 1, and the water injected from the nozzle 5 is discharged. The underwater concrete joint surface 7 is shaved by a jet, and muddy water containing shavings is discharged to the ground by the drainage hose 4.

In the apparatus for treating an underwater concrete joint surface according to the present invention, a traveling vehicle 2 having an operation control device 1 is placed on the underwater concrete joint surface 7 and a downwardly opening hood supported by the traveling vehicle 2. A lower end portion of a drainage hose 4 is connected to 3, and a nozzle 5 for jetting a water jet downward is disposed in the hood 3, and is rotated by a turning drive device 9 fixed to an upper portion of the hood 3. The base end of an arm 11 extending in the lateral direction is fixed to the longitudinal axis 10, the nozzle 5 is attached to the tip of the arm 11, and the underwater concrete transfer surface at the front of the hood 3 is attached to the traveling vehicle 2. An underwater camera 12 for photographing 7 and an illumination lamp 13 for illuminating the photographing section are mounted, and a remote control device 8 for sending an operation signal to the operation control device 1 is disposed on land.

〔Example〕

 Next, the present invention will be described in detail with reference to the illustrated example.

The drawings show one embodiment of the present invention, in which an endless track type traveling vehicle 2 having an operation control device 1 is mounted on an underwater concrete joint surface 7, and a front portion of the vehicle body of the traveling vehicle 2 is provided with: The base ends of a pair of support arms 14 raised by a hydraulic cylinder or the like are pivotally connected by a horizontal axis, and the tip ends of the respective support arms 14 are connected to a metal hood body 15 that is open downward, and A sealing material 16 made of an elastic material such as rubber is fixed to an opening edge of the hood main body 15 to constitute the hood 3.

A casing 18 of a swivel joint 17 of a turning drive device 9 composed of a hydraulic motor is fixed to an upper portion of the hood main body 15, and a driven gear 20 fixed to a rotation shaft 19 of the swivel joint 17 carries the turning drive. A drive gear 21 fixed to the output shaft of the device 9 is meshed.

The upper end of the nozzle swiveling longitudinal axis 10 is detachably fixed to the lower end of the rotating shaft 19 by bolts 22, and the base ends of the plurality of arms 11 are fixed to the lower end of the longitudinal axis 10 at equal angular intervals. A nozzle 5 for jetting water jet downward is attached to the tip of each arm 11, a high-pressure pump 23 for supplying ultra-high-pressure water, a water storage tank 24, and a generator 25 are installed on land. The discharge port and the inlet of the swivel joint 17 are connected via a jet water hose 26, and water is supplied to the rotary shaft 19, the vertical axis 10, and the arm 11 of the swivel joint 17 to supply ultra-high pressure water to the nozzle 5. A hole 27 is provided.

The lower end of the drainage hose 4 is connected to a drainage outlet provided at the upper part of the hood body 15, the other end of the drainage hose 4 is connected to the water storage tank 24, and the jet water hose 26 is electrically connected. A drive control cable 28 containing a cable and a water supply hose is provided so as to extend along the drainage hose 4 and is coupled to the drainage hose 4. The control device 29 and the operation control device 1 are connected.

At the front of the vehicle body of the traveling vehicle 2, an underwater camera 12 for photographing the underwater concrete joint surface 7 at the front of the hood 3.
And a lighting lamp 13 for illuminating the photographing unit, and a lower end of the lifting wire rope 30 is connected to the traveling vehicle 2. A float 31 is connected to an upper end of the wire rope 30. The float 32 is also connected to the upper part of the hose 4.

Remote control device 8 consisting of radio pilot 33 and control panel 34
The control signal transmitted by the radio reception control device 29 is received by the radio reception control device 29, and the signal transmitted from the radio reception control device 29 to the operation control device 1 determines the traveling direction of the traveling vehicle 2,
The running speed and each part of the underwater concrete cutting vehicle 6 are controlled.

Since the operation control device 1, the remote control device 8, and the wireless reception control device 29 are known, detailed description thereof will be omitted.

The water jet injected from the nozzle 5 may be a water jet obtained by mixing abrasive particles in ultra-high pressure water on land.

〔The invention's effect〕

Since the present invention is configured as described above, the following effects can be obtained.

By moving the underwater concrete shaving vehicle 6 along the underwater concrete joint surface 7 while rotating the nozzle 5 for jetting the water jet downward,
It is possible to easily and efficiently cut the concrete on the underwater concrete joint surface 7 and adjust the running speed of the running vehicle or the turning speed of the nozzle 5 to easily cope with changes in the state of latency. So you can
The underwater concrete jointing surface 7 can be reliably treated so that a strong joint can be made, and the underwater concrete cutting vehicle 6 can be operated by operating the remote control device 8 on the ground. Underwater concrete shaving vehicle 6 can be operated by one driver,
The underwater concrete shaving vehicle 6 can be operated for a long time to shorten the construction period.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a partially longitudinal side view showing a state in which an underwater concrete joint surface is being processed by the processing apparatus of the present invention, and FIG. A partially longitudinal side view showing an underwater concrete shaving vehicle mounted on a joint surface, FIG. 3 is a plan view thereof,
FIG. 4 is a vertical sectional side view showing a shaving device arranged on the underwater concrete joint surface, FIG. 5 is a vertical sectional front view thereof, and FIG. 6 is a partial vertical sectional side view showing a nozzle swivel driving device. In the figure, 1 is an operation control device, 2 is a traveling vehicle, 3 is a hood, 4 is a drainage hose, 5 is a nozzle, 6 is an underwater concrete shaving vehicle, 7 is an underwater concrete transfer surface, 8 is a remote control device, 9 is a driving device for turning, 10 is a vertical axis, 11 is an arm, 12 is an underwater camera, 13 is a lighting lamp, 14 is a support arm, 15
Is a hood body, 16 is a sealing material, 17 is a swivel joint, 20 is a driven gear, 21 is a driving gear, 23 is a high-pressure pump, 24
Is a water storage tank, 28 is a drive control cable, 29 is a wireless reception control device, 33 is a wireless pilot, and 34 is a control panel.

Claims (2)

(57) [Claims] 1. A traveling vehicle 2 having an operation control device 1 is mounted with a hood 3 opening downward, and a lower end of a drainage hose 4 is connected to the hood 3 and the hood 3
A submersible concrete shaving vehicle 6, which is provided with a nozzle 5 for jetting a water jet downward in a swiveling manner, is mounted on an underwater concrete transfer surface 7, and an operation signal from a remote control device 8 on the ground is provided. The operation control device 1
The underwater concrete shaving vehicle 6 is caused to travel by an operation signal of the operation control device 1, and the underwater concrete joint surface 7 is shaved by a water jet sprayed from the nozzle 5. The said sludge hose 4
Of underwater concrete joint surface discharged to the ground by 2. A traveling vehicle 2 having an operation control device 1 is placed on a submerged concrete joint surface 7, and a lower end of a sludge discharging hose 4 is attached to a downwardly opening hood 3 supported by the traveling vehicle 2. An arm which is connected and has a nozzle 5 for jetting a downward water jet in the hood 3 and which extends in a horizontal direction on a vertical axis 10 rotated by a turning drive device 9 fixed to an upper portion of the hood 3. A base end portion of the arm 11 is fixed, the nozzle 5 is attached to a tip end of the arm 11, and the underwater camera 12 for photographing the underwater concrete joint surface 7 in front of the hood 3 on the traveling vehicle 2 and the photographing thereof An underwater concrete jointing surface treatment device, which is provided with a lighting 13 for illuminating the part, and a remote control device 8 for sending an operation signal to the operation control device 1 is disposed on land.