JPH0731962Y2 - Portable polishing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for polishing a long material such as a pipe, which is detachably connected to a blast machine of an abrasive recovery system via a hose.

[0002]

2. Description of the Related Art In order to remove black skin of welds such as small diameter pipes and steel materials or to remove slag and oxide film from welds,
There is a blast machine that sprays sand with air.
A conventional blast machine is a stationary type machine in which all the functions are integrated, and a blasting operation is performed by an operator spraying sand along with air onto a part to be polished while supporting a pipe by hand. It was

[0003]

[Problems to be Solved] Such a blast machine has a drawback in that it is difficult to exhibit the starting ability in a narrow place such as a pipe laying site, it requires a lot of manpower, and the workability is poor.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention has an object to provide an easy-to-use polishing apparatus having a starter and a polishing unit separated from the blast machine main body on a stand with casters. It has the following configuration.

In this apparatus, a box-shaped polishing section 8 is provided on an upper part of a pedestal 2 having a moving wheel 1. The polishing section 8 has a pair of through holes 3 for inserting a long material that penetrates in the longitudinal direction of the gantry 2.
Is provided, and the sand jet hole 4 and the viewing window 5 are provided on the outer peripheral surface.
In addition, a lighting lamp 6 is arranged, and a funnel-shaped sand discharge hole 7 is provided at the lower end.
Is provided. Then, the long material laterally extending portions 9 are provided on the gantry 2 so as to be separated from each other on the extension lines of the pair of through holes 3. Then, the sand jet holes 4 are provided as air hoses in the supply holes of the blast machine 10 for jetting sand together with the air.
A sand discharge hole 7 is detachably connected to the return port of the blast machine 10 via an air hose.

[0006]

In FIG. 1 and FIG. 2, the pipe 13 is laid horizontally on a pair of long material horizontal members 9 and the polishing portion 8 is provided from the tip thereof.
The pipe 13 is passed through the through hole 3 and the portion to be polished is positioned directly below the sand jet hole 4. And the blast machine 10
Is driven to eject the sand from the sand ejection hole 4 together with the air. Then, the portion to be polished is polished while slowly rotating the pipe 13. The jetted sand is returned from the sand discharge hole 7 to the blast machine 10 and circulated. The pedestal 2 is arranged in the longitudinal direction regardless of the blast machine 10 so as to facilitate the work depending on the situation of the site. The sand jetting holes 4 and the sand discharging holes 7 of the polishing section 8 are communicated with the blast machine 10 via the air hoses 11, respectively.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of the apparatus, FIG. 2 is a schematic side view of the right side thereof, FIG. 3 is a plan view of the same, and FIG. 4 is an enlarged view of a portion A of FIG. The main part of the apparatus of this embodiment comprises a pedestal 2, a polishing section 8 and a long material horizontal cross section 9. The gantry 2 is assembled from a shape steel such as an angle member, and the moving wheels 1 such as casters are provided at the four corners of the lower end thereof so as to project. Then, a top plate is arranged on the upper surface of the pedestal 2, and a polishing portion 8 is provided so as to project at a corner portion of the top plate. The polishing section 8 is formed in a hopper shape having an upper lid. That is, the outer circumference is box-shaped and the lower surface is funnel-shaped. A through hole 3 as shown in FIG. 2 is provided on the side surface in the longitudinal direction. A sand jet hole 4 is provided on the upper surface thereof, and the sand jet hole 4 is provided with a connector for connecting an air hose. Further, an illumination lamp 6 that illuminates the inside is attached to the upper surface of the polishing section 8 and a viewing window 5 is provided.

Next, a pair of elongate material laterally extending portions 9 are provided on the upper surface of the gantry 2 on the extension lines of the pair of through holes 3 opening on both sides of the polishing portion 8 so as to be separated from each other. As shown in FIG. 4, the long member laterally extending portion 9 has a V block fixed to the upper end of a stud bolt. It is also possible to pivotally support a drum-shaped roller instead of the V block. The lower end of the stud bolt is fixed to the top plate of the pedestal 2 so as to be vertically movable. That is, by changing the fixing positions of the pair of nuts 16, the height of the pipe-mounting surface of the long material horizontal bridge portion 9 is adjusted. This moves up and down according to the diameter of various pipes. Further, as shown in FIGS. 2 and 3, a fall prevention pipe 14 is provided on one side surface in the width direction of the gantry 2.
Is detachably erected upright, and a pipe mounting portion 12 is provided between the fall prevention pipe 14 and the polishing portion 8. Then, a large number of pipes 13 are temporarily placed on the pipe placing portion 12.

Next, a method of using this device will be described.
First, the apparatus is moved to a pipe installation site or the like, the gantry 2 is arranged at an appropriate position, and the moving wheels 1 at the lower end of the gantry 2 are locked. Then, the blast machine 10 is arranged at an appropriate position in the vicinity of the gantry 2, and the supply side of the blast machine 10 and the sand ejection holes 4 of the polishing section 8 are connected via the air hose 11. At the same time, the return side of the blast machine 10 and the sand discharge hole 7 of the polishing section 8 are connected via the air hose 11. Next, a long material such as the pipe 13 or shaped steel is horizontally mounted between the pair of long material horizontal bridge portions 9 and is inserted into the polishing portion 8 through the through hole 3. Then, the portion to be polished is arranged immediately below the sand jet hole 4. At the same time, the nut 16 at the lower end of the horizontal bridge 9 is adjusted to adjust the horizontal height of the long material such as the pipe 13. Next, the blast machine 10 is driven, and sand is vigorously ejected from the sand ejection holes 4 together with air to collide with the portion to be polished. Then, the long material such as the pipe 13 is slowly rotated around its axis, and the outer periphery is polished thoroughly. For example, in the case of the pipe 13, before the welding, the work of removing the black skins at both ends is performed. Then, the beat of the welded portion is polished by this apparatus. The stripped black skin and the sludge of the weld are separated in the blast machine 10, and the sand and the air, which do not exist, are re-exposed to the sand jet holes 4
Eject more.

[0010]

EFFECT OF THE INVENTION In the polishing apparatus of the present invention, a polishing unit 8 is provided on a movable base 2 which is separated from a blast machine.
On the extension line of the through-hole 3, a long member horizontal crossing portion 9 is provided. The blast machine 10 and the polishing section 8 are detachably connected by an air hose 11.
Therefore, it is possible to effectively utilize a relatively small space such as a pipe laying site and efficiently polish the end of a long pipe or the like and the weld of the pipe. Also, this device is separated from the blast machine 10 and the air hose 11 is placed between them.
Since it is configured so as to be detachably communicated with each other through the, it can be a device that is lightweight, easy to move, unobtrusive, and easy to use.

[Brief description of drawings]

FIG. 1 is a front view of the device.

FIG. 2 is a schematic view of a right side surface thereof.

FIG. 3 is a plan view of the same.

FIG. 4 is an enlarged view of part A of FIG.

[Explanation of symbols]

 1 Wheel for movement 2 Stand 3 Through hole 4 Sand ejection hole 5 Peep window 6 Lighting lamp 7 Sand discharge hole 8 Polishing part 9 Long material horizontal part 10 Blasting machine 11 Air hose 12 Pipe mounting part 13 Pipe 14 Fall prevention pipe 15 Stud bolt 16 Nut

Claims (2)

[Scope of utility model registration request] 1. A frame (2) having wheels (1) for movement.
And a pair of through holes (3) for inserting and removing the long material, which are formed in a box-like shape on the upper part of the frame (2) and penetrate through the frame (2) in the longitudinal direction, and sand on the outer peripheral surface. Spout hole (4)
And a viewing window (5) and an illuminating lamp (6), and a sanding part (8) provided with a funnel-shaped sand discharge hole (7) at the lower end.
And a long material horizontal crossing portion (9) arranged apart from each other on the pedestal of the extension line of the pair of through holes (3),
The sand jet hole (4) is detachably connected to a supply port of a blast machine (10) for jetting sand together with air via an air hose (11), and the discharge hole (7) is of the blast machine. A portable polishing device for long materials, which is detachably connected to the return port via an air hose. 2. The pipe mounting part (12) according to claim 1, wherein a plurality of pipes are mounted on an upper surface of a side portion of the gantry.