JP2000179153A - Washing device for pipe for temporary work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing device for a pipe for temporary works, which has simple structure and can wash pipes for temporary works having different length and in which throughput capacity can also be improved. SOLUTION: A high-pressure water injection nozzle 3 is disposed at the upper level of a pipe passage on a frame, and a pair of upper-lower hourglass type rollers 7a, 7b pinching pipes passed in the pipe passages before and after the high-pressure water injection nozzle 3 are arranged rotatably. The hourglass type rollers 7a, 7b are disposed so as to be crossed while being displaced at fixed angles in the transfer direction of the pipes so that the passed pipes are given rotation and forward working. The pipes are moved forward while being turned by the hourglass type rollers 7a, 7b, and passed in the injection region of high-pressure water injected from the high-pressure water injection nozzle 3 and washed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary pipe cleaning apparatus for cleaning and removing extraneous matter, for example, concrete and paint, attached to a temporary pipe used at a construction site or the like.

[0002]

2. Description of the Related Art As a cleaning device for a temporary pipe, as shown in Japanese Utility Model Publication No. 6-35068, a high-pressure water injection nozzle which is movable along a traveling rail on a horizontally long base is provided. Then, both ends of the temporary pipe conveyed directly below the high-pressure water injection nozzle by the chain conveyor are sandwiched by chucks, and the high-pressure water injection nozzle is moved along the length of the pipe while rotating the pipe by rotation of the chuck. There is a cleaning device.

[0003]

However, in the above-mentioned conventional cleaning apparatus, since both ends of the temporary pipe are held between the chuck portions, cleaning cannot be performed if the pipe length is different, and the moving pipe cannot be cleaned. Since the cleaning is carried out while being held between the chuck portions, it takes a long time to clean a single pipe, so that there is a drawback that the processing capacity is not improved.

In view of the above, the present invention has a simple structure,
It is an object of the present invention to provide a temporary pipe cleaning apparatus capable of cleaning pipes having different lengths and improving the processing capacity.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a high-pressure water injection nozzle is disposed above a pipe passage on a gantry, and a high-pressure water injection nozzle is provided before and after the high-pressure water injection nozzle. A pair of upper and lower hourglass rollers for sandwiching the passing pipe are rotatably disposed, and the hourglass rollers are shifted by a predetermined angle with respect to the transport direction of the pipe so as to impart rotation and forward action to the passing pipe. It is characterized by being arranged in.

[0006]

According to the apparatus for cleaning a temporary pipe according to the present invention, when the temporary pipe is inserted between a pair of upper and lower hourglass rollers rotating on a gantry, the hourglass roller moves in the traveling direction of the pipe. And the pipe is held forward by the rotation of the upper and lower hourglass rollers while rotating the pipe. High-pressure water is jetted from the high-pressure water jet nozzle in front of the drum-shaped roller, so that the pipe running straight while rotating is washed and removed from the entire surface of the pipe in such a manner that a tape can be wound around the pipe.

As described above, since the temporary pipe is rotated and moved forward by the drum-shaped roller to pass through the high-pressure water jet area for cleaning, even if temporary pipes having different lengths are mixed, cleaning is performed. Cleaning is possible while continuously transferring the pipe without stopping it, so that the processing capacity is improved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a gantry of the cleaning apparatus of the present invention, which is provided with a high-pressure water injection device 2 for injecting high-pressure water near the center of the gantry 1; , Makes the high-pressure water injection nozzle 3 rotatable by the motor 4.
The high-pressure water injection nozzle 3 is horizontally long and has many injection holes. Although not shown, the high-pressure water injection nozzle 3 is provided with a mechanism that swings in the horizontal direction while rotating. When the high-pressure water is injected while rotating and swinging the nozzle 3, the nozzle 3 is simply rotated. The cleaning effect is higher than the above, which is preferable. In addition, since the high-pressure water injection nozzle 3 jets high-pressure water in a manner such that a tape is wound around a pipe that is conveyed while rotating to wash the deposits, it has an injection width with no washing leakage to the pipe. Adopt a nozzle.

The high-pressure water injection nozzle 3 is connected to a high-pressure water generator (not shown) by a high-pressure hose 5, and the high-pressure water generator includes a plunger pump.
It is preferable to use one that can generate high-pressure water of about 3000 atm.

A pipe transfer device 6 for transferring a temporary pipe is provided before and after the high-pressure water injection device 2. The pipe transfer device 6 includes a pair of upper and lower hourglass rollers, each having a roller surface depressed in an arc, arranged in an appropriate row.
a and 7b are arranged so as to cross each other, and are conveyed while holding the pipe.

The lower hourglass roller 7a is disposed at an appropriate angle with respect to the direction in which the pipe is transported.
It is preferable to displace the drum-shaped roller 7a by about 45 degrees as shown in the illustrated example. The drum-shaped roller 7a is rotatably mounted on a support member 8 erected on both sides and is connected to a motor 9 to rotate the roller suitable for cleaning the pipe. I try to rotate by number.

Further, the upper hourglass roller 7b is disposed so as to cross at a predetermined angle in the opposite direction to the lower hourglass roller 7a with respect to the pipe transfer direction, and as shown in the example shown in the figure, the lower hourglass roller 7b intersects. If the roller 7a is shifted by 45 degrees, the upper drum-shaped roller 7
b is shifted 45 degrees to the opposite side, and the upper and lower hourglass rollers 7a, 7
b are arranged to be orthogonal to each other.

The upper drum-shaped roller 7b is rotatably mounted on a support member 11 suspended from the upper portion of the frame 10 and is connected to a motor 13 via a universal joint 12. The supporting member 11 can be moved up and down by a cylinder 14 disposed on the upper portion of the frame 10, and a temporary pipe can pass between the upper drum-shaped roller 7b and the lower drum-shaped roller 7a when the upper drum-shaped roller 7b is lowered. A space is provided, and the pressing force is adjusted to such a degree that the pipe can be held lightly.

By rotating the hourglass rollers 7a, 7b in a direction in which the temporary pipe is inserted between the upper and lower hourglass rollers 7a, 7b, the nipped temporary pipe can be advanced while rotating. it can.

The operation of rotating and moving the temporary pipe is as follows.
As shown in FIG. 4, when the lower drum-shaped roller 7a is tilted by θ degrees with respect to the transfer direction of the pipe M and rotated in the forward direction of the pipe, a thrust P is generated in the rotation direction, and the transfer direction of the pipe M is changed. thrust component force P ₂ is generated in the direction perpendicular to the force component P _1, the transport direction of the pipe M to. The component force P ₁ is to advance the pipe M, also the force component P ₂ rotates the pipe M. Similarly, a thrust for advancing and rotating the pipe is generated by the upper drum-shaped roller 7a.

For example, the inclination angle θ of the hourglass roller 7a is set to 4
If set to 5 degrees, the component force P ₁ and the component force P ₂ will be the same,
Assuming that the thrust of the component force and the moving distance of the pipe in each direction are almost proportional, when the pipe makes one rotation, the pipe advances by the outer peripheral length. Therefore, by setting the width of the high-pressure water injection region injected from the high-pressure water injection nozzle 3 to be equal to or greater than the outer peripheral length, the temporary pipe rotates one or more rotations when passing the high-pressure water injection region. Thus, high-pressure water can be jetted all over the outer peripheral surface of the pipe.

Reference numerals 15 and 16 denote roller conveyors for introducing and discharging temporary pipes. In front of the roller conveyor 15 for introduction, pipes are disposed between upper and lower hourglass rollers 7a and 7b. A funnel-shaped guide cone 17 for smooth guiding is provided.

Next, the cleaning operation of the temporary pipe cleaning device will be described.

First, the motors 9 and 13 of the pipe transfer device 6 in which two pairs of upper and lower hourglass rollers 7a and 7b are arranged before and after the high-pressure water injection device 2 are driven to drive the hourglass rollers 7a and 7b.
b is rotated at the same rotation speed. Further, the upper drum-shaped roller 7b is lowered by operating the cylinder 14 so that the temporary pipe can pass between the lower drum-shaped roller 7a and the upper drum-shaped roller 7b. Further, it is preferable that the pressing force by the cylinder 14 is also adjusted to an appropriate strength so that a strong impact can be absorbed.

Next, the motor 4 of the high-pressure water injection nozzle 3 is driven to rotate the nozzle, high-pressure water is supplied from the high-pressure water generator to the high-pressure water injection nozzle 3, and high-pressure water is supplied from the high-pressure water injection nozzle 3. Inject.

When the temporary pipe is conveyed by the roller conveyor 15 from the right hand side in FIG. 2 and sent into the guide cone 17, the pipe is guided by the guide cone 17 between the hourglass roller 7a and the hourglass roller 7b. Is transported forward while being rotated by the rotating hourglass roller 7a and hourglass roller 7b.

In front of this, a rotating high-pressure water injection nozzle 3
Higher-pressure water is being sprayed, and the fed pipe rotates and passes through the high-pressure water spraying area, during which time high-pressure water collides with the concrete and paint adhering to the pipe surface, and is washed away. You.

When the leading end of the pipe moves forward through the high-pressure water injection region, it is again sandwiched between the hourglass-shaped rollers 7a and 7b, which are disposed in front, and is drawn forward. . Then, when the rear end of the pipe passes through the high-pressure water injection region, the cleaning process is completed.

Thus, a pair of upper and lower hourglass rollers 7a,
7b is used for cleaning while rotating and transporting the pipe, so that the apparatus configuration is simplified, and cleaning is possible even when pipes of different lengths are mixed, and furthermore, cleaning can be performed continuously without stopping the pipe. Processing capacity is also improved.

[0026]

As described above, in the apparatus for cleaning a temporary pipe according to the present invention, the high-pressure water injection nozzle is disposed above the pipe passage on the gantry, and the high-pressure water injection nozzle is located before and after the high-pressure water injection nozzle. A pair of upper and lower hourglass rollers for holding the pipe passing through the pipe passage route are rotatably disposed, and the hourglass roller is shifted by a predetermined angle from the pipe transfer direction so as to impart rotation and forward action to the passing pipe. Since the pipes are arranged so as to cross each other, the temporary pipes having a simple structure and different lengths can be cleaned, and the pipes can be continuously fed to be cleaned, thereby improving the processing capacity.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a temporary pipe cleaning apparatus according to the present invention.

FIG. 2 is a plan view of FIG. 1 with a part cut away.

FIG. 3 is a side view in which a part of FIG. 1 is cut away.

FIG. 4 is a diagram illustrating the relationship between the rotating hourglass roller and the movement of a pipe.

[Description of sign]

DESCRIPTION OF SYMBOLS 1 ... Stand 3 ... High-pressure water injection nozzle 6 ... Pipe transfer device 7a ... Hourglass roller 7b ... Hourglass roller

Claims (1)

[Claims] 1. A high-pressure water injection nozzle is disposed above a pipe passage on a gantry, and a pair of upper and lower drum-shaped rollers that sandwich a pipe passing through a pipe passage before and after the high-pressure water injection nozzle are rotatable. Wherein the hourglass roller is arranged so as to cross the pipe passing therethrough at a predetermined angle from the transfer direction of the pipe so as to impart rotation and forward action to the pipe passing therethrough.