JPH05170098A - In-pipe travel device - Google Patents

Abstract

PURPOSE:To dispose a washing device near the entrance side of a pipe so as to wash the pipe end part in a wide range by forming support mechanism into pantograph type expansion mechanism. CONSTITUTION:In an in-pipe travel device 3 with a nozzle device 2 provided at the tip part of a cylindrical body 1, belt type crawler travel devices 4 are disposed at three circumferential places of the body 1, and the support mechanisms 5 of the crawler travel devices 4 are provided at the body 1. The support mechanism 5 is to be panto-graph type expansion mechanism with a pair of first and second links 12, 13 connected in pivotally supported X-shape. The lower end part of the second link 13 is connected in the pivotally supported state to a slide member 14 provided at the rear part of the body 1, and the upper end part is connected in the pivotally supported state to the axle support plate 15 of the crawler travel device 4. The slide member 14 is fitted to the rear part of the body 1 so as to slide along the axis of the body 1 to perform the expansion of the support mechanism 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention arranges crawler traveling devices at a plurality of locations in the circumferential direction of a machine body, and provides the machine body with a support mechanism for supporting the crawler traveling device in a radial direction of the machine body. The present invention relates to a traveling device in a pipe.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned in-pipe traveling device,
The support mechanism arranges a pair of left and right links between the machine body and the crawler traveling device in parallel with each other at regular intervals, and pivotally connects both ends of the links to the machine body and the crawler traveling device together. It was configured. In other words, the machine body, the crawler traveling device, and the pair of links form a parallel four-link structure, and the pair of links are rocked in the front-rear direction of the machine body so that the crawler traveling device is extended in the radial direction of the machine body. I was leaving.

[0003]

However, according to the above-mentioned conventional structure, since the crawler traveling device is moved in and out by swinging the link, the inside of the pipe having a diameter not so large as compared with the diameter of the machine body is used. When traveling, the amount of rocking of the links for causing the crawler traveling device to project and move into pressure contact with the inner wall of the pipe can be small, so the aircraft travels in a form projecting in the traveling direction with respect to the crawler traveling device. As a result, for example, when a nozzle device or the like is attached to the front end of the machine body to clean the inside of the pipe, the distance between the crawler traveling device and the nozzle device becomes large, and the nozzle at the inlet end of the crawler traveling device becomes a nozzle. The apparatus and the like are located inside the pipe, and there is a drawback that the area where the cleaning cannot be performed becomes large at the end of the pipe. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional drawbacks and to provide an in-pipe working device capable of cleaning the end of the crawler traveling device on the inlet side in a wide range regardless of the size of the pipe.

[0004]

In order to achieve the above object, an in-pipe traveling device according to the present invention is characterized in that a supporting mechanism is constituted by a pantograph type expansion / contraction mechanism. On the street.

[0005]

In other words, since the support mechanism is composed of the pantograph type expansion / contraction mechanism, the crawler traveling device can be retracted and retracted in the radial direction of the machine body while it is difficult to move in the front-rear direction with respect to the machine body. The distance between the crawler traveling device and the front end of the fuselage in a state where the crawler traveling device is projected and moved into pressure contact with the inner wall of the pipe can be maintained substantially constant in the axial direction of the pipe regardless of the size of the pipe. In the case of traveling in a pipe having a diameter that is not so large as compared with the diameter of the machine body, and when attaching a working device such as a nozzle to the front end of the machine body and cleaning the inside of the machine pipe, At the pipe end on the inlet side of the crawler traveling device, the working device can be arranged closer to the inlet of the pipe than in the past.

[0006]

Therefore, when traveling in a pipe having a diameter that is not so large as compared with the diameter of the machine body, and when a working device such as a nozzle is attached to the front end of the machine body to clean the inside of the machine body Even in such a case, since the working device can be arranged closer to the entrance side of the pipe than in the conventional case at the pipe entrance portion, there is provided an in-pipe traveling device capable of expanding the range of the pipe end portion where cleaning work can be performed. Could be provided.

[0007]

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

1 to 4, the pipe running device 3 is inserted into the suction roll 10 to clean the inner wall surface 11 thereof.
Is shown.

The in-pipe traveling device 3 is provided with a nozzle device 2 at the tip of a cylindrical machine body 1, belt type crawler traveling devices 4 are arranged at three locations in the circumferential direction of the machine body 1, and the crawler traveling device 4 is a machine body. 1, a support mechanism 5 for supporting in a radial direction of the apparatus 1 is provided in the machine body 1, and an air supply pipe 8 and a cleaning liquid supply pipe 9 are provided at the rear end of the machine body 1.
And are connected.

The nozzle device 2 has a drive rotary shaft 2a,
A plurality of nozzles 2b are mounted in a circumferentially dispersed state.

The crawler traveling device 4 is provided with a pair of left and right traveling belts 6, respectively.

The support mechanism 5 is composed of a pantograph type expansion / contraction mechanism, and includes a pair of first and second links 12 and 1.
3 are pivotally connected to each other in an x shape, the lower end of the first link 12 is pivotally connected to the front of the machine body 1, and the upper end thereof is pivotally connected to the axle of the rear wheel of the crawler traveling device 4, On the other hand, the second
A lower end portion of the link 13 is pivotally connected to a slide member 14 provided at a rear portion of the machine body 1, and an upper end portion thereof is pivotally connected to an axle support plate 15 of the crawler traveling device 4 slidably in a longitudinal direction thereof. ..

The sliding member 14 is attached to the rear portion of the machine body 1 so as to slide along the axis of the machine body 1 via an air cylinder 16 and a swing arm 17 incorporated in the machine body 1, as shown in FIG. As shown in, by sliding the slide member 14 to the front end side of the machine body 1,
By extending the x-shaped link 21 to project the crawler traveling device 4 in the radial direction of the machine body 1, and conversely sliding it to the rear end side, the x-shaped link 21 is contracted and the crawler traveling device 4 is moved. It is configured to be retreated in the radial direction.

A plurality of notches 18 are formed in the upper end of the slide member 14 in the longitudinal direction, and the pivot shaft 19 at the lower end of the second link 13 is inserted into one of the notches 18 to be mounted. I put it. The amount of expansion and contraction of the x-shaped link 21 can be freely adjusted by changing the groove 18 in which the pivot shaft 19 is placed.

The upper end of the second link 13 is slidable in the longitudinal direction by fitting the upper end into an elongated hole 20 formed in the axle support plate 15 of the crawler traveling device 4.

In the above structure, the x-shaped link 21 is extended through the air cylinder 16 and the swing arm 17 to move the crawler traveling device 4 to the suction roll 10.
By making pressure contact with the inner wall surface 11 of the machine body 1, the machine body 1 is held at the axial center of the suction roll 10 or in the vicinity thereof, and the crawler traveling device 4 is driven via the air motor and the transmission mechanism. While automatically traveling along the inner wall surface 11 of the suction roll 10, the nozzle device 2 is rotated around the front-rear axis of the machine body 1 to remove the cleaning fluid, which is a mixture of cleaning liquid and air, and the like.
It is jetted toward the inner wall portion of 0.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a traveling device in a pipe.

FIG. 2 is a side view showing an operating state of a support mechanism.

FIG. 3 is a front view of the in-pipe traveling device.

FIG. 4 is a front view of the main part.

[Explanation of symbols]

 1 Airframe 4 Crawler traveling device 5 Support mechanism

Claims (1)

[Claims] 1. A support for arranging crawler traveling devices (4) at a plurality of locations in the circumferential direction of the machine body (1) and for supporting the crawler traveling devices (4) in a radial direction of the machine body (1). An in-pipe traveling device in which the mechanism (5) is provided in the machine body (1), and the supporting mechanism (5) is configured by a pantograph type expansion / contraction mechanism.