JPH05154454A - Attachment type pipe wall scraper - Google Patents

Abstract

PURPOSE:To provide a pipe wall cleaning device dealing with the situation where the diameter of a sewer pipe is changed and the state of soil of the sewer pipe is changed. CONSTITUTION:A truck has four wheels provided vertically in two stages and the space between the upper and lower wheels is variable. Next, an attachment 4 is freely attachably and detachably connected to the front of the truck so that a pipe wall cutting means protrudes from the attachment 4 to the pipe wall by centrifugal force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe wall scraping machine for cleaning a pipe wall or the like.

[0002]

2. Description of the Related Art When the same sewer pipe is used for many years, not only dust is collected at the bottom but also various precipitates contained in wastewater are condensed on the pipe wall, and the pipe is gradually closed. , The flow of water is bad. For this reason, it is necessary to regularly clean the sewage pipes that have been buried, but it takes a lot of work to dig out the sewage pipes, clean them, and bury them again. Cleaning is done with the padded. However, there are many small branch pipes that people can not enter, so if you try to clean the sewer pipe while buried in the ground, the dust accumulated at the bottom of the sewer pipe can be removed relatively easily. However, it is difficult to remove condensate sticking to the wall of the pipe with ordinary equipment. Therefore, to remove the condensate,
A special cutting instrument was used that matched the diameter of the sewer pipe, but it was quite troublesome to make a cutting instrument that fits the diameters of various sewer pipes, so improvement was required. ..

[0003] Once, the inventor of the present invention expands and contracts wheels arranged in parallel vertically to create a vehicle body corresponding to a pipe diameter, and to provide a rotary blade having a variable cutting diameter on the vehicle body (JP-A-2-
No. 108739) provides a cutting device that can be used even if the pipe diameter changes slightly. However, since the rotary blade of this device changes the cutting diameter as the blades arranged in a radial pattern advance and retreat along the guide groove, the entire structure becomes very complicated. In addition to the drawback that the tube wall has a large number of aggregates, it lacks versatility.

[0004]

Therefore, in the present invention, it is an object of the present invention to provide an instrument which has a simple structure and is capable of removing any condensate on the tube wall in response to a slight change in the tube diameter. This is a technical issue.

[0005]

In the present invention, a high-speed rotating attachment holder is arranged at the front or rear of a lumen track having two wheel sets in which axles are aligned on the same plane. , While increasing or decreasing the distance between the wheel sets of the same track with the running cavity diameter adjuster,
The above-mentioned problems are solved by adopting a means that allows the scraper to project forward and backward while biasing it in the direction of the center of rotation with a centripetal, and allows the scraping attachment to be attached to and detached from the attachment holder of the lumen track. We have realized a pipe wall scraper that solves this problem.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments.

A pair of upper and lower boat-shaped chassis 1 and 2 are combined to form a lumen track. Both chassis 1 and 2 have long holes 12 and
Since they are connected by bolting to 12 ..., When the built-in running cavity diameter adjuster (the air cylinder 3 in the illustrated example) expands and contracts, it slides up and down to expand and contract. Also, chassis 1
・ 2 has 4 wheels of 2 axles, respectively 11 ・ 11 ・ ・ ・ ・ ・ 21 ・
21 .... are also arranged, and when the traveling cavity diameter adjuster expands and contracts and the chassis 1 and 2 slide with respect to each other, the wheel sets of both chassis 1 and 2 change the distance between each other. For this reason, even with sewage pipes having different pipe diameters, all eight wheels can come into contact with each other to run while keeping the posture of the lumen track stable.

A hydraulic rotary actuator 41 is mounted on the front part of the lumen track, and the attachment holder 4 which is brought out and arranged in front of the rotary actuator 41 can be rotated at a high speed (about 700 revolutions per minute). it can. The hydraulic pressure supplied to the rotary actuator 41 is sent from the rear of the track through a tube (not shown) together with the compressed air supplied to the air cylinder 3. The end of this tube is connected to a pump on the ground. The attachment holder 4 has a circular shape when viewed from the front of the truck, and a hook 7 is arranged at the center of the attachment holder 4 and five screw rods are arranged in a star shape around the hook 7. Among these, the hook 7 is provided by using a ball bearing so as to project so as to freely rotate with respect to the attachment holder 4, so that the rope is not twisted when the tow rope is connected to the hook 7. There is.

Roughly speaking, the scraping attachment is shaped like four cylinders protruding from a cylinder. The rear part of the cylinder is a slightly larger cylinder, and five bolt holes are drilled in the large-diameter cylindrical part. From there, pass the screw rod of the attachment holder and fasten with a nut to attach the attachment to the truck. It is designed to be used. At this time, the hook 7 passes through the center of the cylinder and is seen from the tip of the attachment.

Further, the four rod-shaped members projecting from the cylinder are the scrapers 5, 5, ... And their brackets 51, 51 ,. By the positioned cutting rollers 52, 52 ... Contacting the sewer wall,
Condensate can be removed. The cutting roller is pivotally mounted on the roller bracket 53, 53, ... at the tip of the scraper via a ball bearing. The roller surface is provided with a blade, a groove, or a dia tip. Therefore, the cleaning ability can be changed variously. Further, the roller brackets 53, 53, ... Are attached so as to be horizontally rotatable in the axial direction of the scrapers 5, 5, .. It has been stopped. Then, loosen this screw, twist the roller bracket at a predetermined angle with respect to the rotation plane of the attachment, and tighten the screw again.When the attachment rotates, the frictional force between the roller and the pipe wall causes a force in the advancing / retreating direction to the attachment. It is also possible to cause the entire scraping machine to run by itself.

The brackets 51, 51, ..., Which are arranged in a cross shape when viewed from the front, are connected with the scrapers 5, 5 ,. It is urged in the centripetal direction by being pulled together by 6/6 .... The four tubular brackets 51, 51 ... Are arranged in a cross shape when viewed from the front, but the adjacent brackets are always arranged in different steps, and the opposing brackets are arranged in the same step. Therefore, the springs do not cross each other. Naturally, this spring is the centripetal device in the claims.

The pipe wall is actually cleaned by using the pipe wall scraping machine constructed as described above. First, with the attachment attached to the truck, hook the rope from the opposite side of the sewer pipe to the hook of the truck, store the truck in the sewer pipe, and then send compressed air to the air cylinder to connect all eight wheels of the truck. Wall Then, when the rotary actuator is operated to rotate the attachment holder and the attachment, the centrifugal force overcomes the urging force and the scraper advances, and the cutting roller rotates while contacting the sewer pipe wall and the pipe wall coagulates. Polish and remove the kimono. And
Just pull the rope at an appropriate speed and run a scraper to clean the entire sewer pipe. During this cleaning, the reaction force generated when the attachment holder and the attachment rotate is canceled by the friction of the eight rolling wheels that are in contact with the pipe wall, so that the truck does not rotate.

As described above, the pipe wall is cleaned. However, since the condensate actually attached to the pipe wall is miscellaneous, it cannot be completely cleaned with one cleaning. For this reason, it is necessary to run the pipe wall scraper several times while exchanging the attachment. Depending on the shape of the cutting roller, the attachment is for roughening the pipe wall surface,
There are different types such as polishing the pipe wall and finishing the pipe wall, and use it according to the application.

[0014]

As described above, the pipe wall scraping machine of the present invention is
The blade advancing / retreating mechanism is simpler than conventional products, and by exchanging the attachment, any condensate can be removed. Therefore, it is very convenient for the maintenance of sewerage and has high industrial utility value.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a partial sectional side view of the embodiment.

FIG. 3 is a rear view of the embodiment.

FIG. 4 is a front view of the embodiment.

FIG. 5 is a side view of the attachment.

FIG. 6 is a side view of the attachment.

[Explanation of symbols]

 11 Rolling wheel 21 Rolling wheel 4 Attachment holder 5 Scratcher

Claims (2)

[Claims] 1. A luminal track comprising a luminal track and a scrubbing attachment. The luminal track comprises a high-speed rotating attachment holder arranged at the front or rear of the luminal track and a pair of wheel sets in which the axles are aligned on the same plane. And a traveling cavity diameter adjuster that expands or contracts the distance between the wheel sets, the scraping attachment is a scraper that is provided so as to be capable of advancing and retracting, and the scraper is in the rotation center direction of the scraping attachment. An attachment-type tube wall scraping machine, comprising a centriplator for urging, and a scrubbing attachment that can be attached to and detached from the attachment holder of the lumen track. 2. A cutting roller is rotatably attached to the tip of the scraper, and the rotary shaft of the cutting roller is inclined with respect to the rotary shaft of the scraping attachment and the attachment holder, so that the scraping attachment and the attachment. The attachment type tube wall scraping machine according to claim 1, wherein when the holder rotates, a forward / backward force is generated in the lumen track.