JPH05172493A - Simple ash removing tool - Google Patents

Abstract

PURPOSE:To obtain an ash removing tool which is light, portable and simple in assembling and in which transmission of vibration to an operation is prevented and a use in a high place operation or a narrow operating space is facilitated. CONSTITUTION:A jet hammer 3a for removing fixed ash adhered to a surface of a tube 1 by driving a piston 7 is mounted at a mounting fitting 9 coupled to a housing 11 by two shafts 10. Vibration at the time of driving the hammer is absorbed by springs 12 inserted into the shafts 10. The housing 11 is mounted at a plate 17 together with a cushion rubber 16. When a handle 18 is loosened, its end can be tiltably fixed, and fixed to an attachment 19. An air joint 8b mounted at the hammer is connected to an air joint of an air gun 2. When a push lever 4 is pressed, compressed air from an air inlet 5 is fed to the hammer 3a through an air hose to longitudinally drive the piston 7, thereby hitting the surface of the tube 1 to drop the adhered ash.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple type ash removal tool which is applied to the work of removing adhered ash from various plant pipes such as boilers.

[0002]

2. Description of the Related Art Conventionally, when inspecting pipes for thinning or cracks in various plants such as boilers, commercially available products such as sandpaper and grinders are manually used, or the shot blasting device is operated to fix the pipe surface. After removing the ash, the ultrasonic sensor is used to inspect and measure the thickness reduction, or PT (liquid permeation flaw detection method) for cracks and the like.

[0003]

By the way, as mentioned above, in the case of the work for removing the adhered ash on the surface of the pipe by using the conventional commercially available tool (grinder etc.), there are many difficult points such as a narrow space and work at a high place. There were problems that the worker could not take a stable posture, work efficiency was poor, and work safety was unsuitable.

An object of the present invention is to solve the above-mentioned problems and to provide a new ash removal tool which is easy and light in operation and which can prevent transmission of vibration to an operator.

[0005]

As a structure for achieving the above object, a simple type ash removal tool of the present invention comprises a cushion slide and an anti-ash jet hammer attached to a surface of an object to be processed by driving a piston. Attached to a spray gun for blowing compressed air through a vibrating rubber, attached so that the jet hammer can be swung at the tip of the spray gun, and further connected the jet hammer and the spray gun through an air joint. Is characterized by.

[0006]

The simple ash removal tool of the present invention is a commercially available air spray gun equipped with a one-touch attachable / detachable jet hammer type tip tool via a cushion slide and a vibration-proof rubber, and compressed air pressure is obtained by operating the push lever of the air spray gun. The jet ash is driven to drive the piston attached to the tip of the jet hammer back and forth to remove the adhered ash attached to the pipe.

The vibration of the jet hammer is absorbed by the cushion slide and the anti-vibration rubber to prevent a vibration collision to an operator who supports the spray gun and reduces the burden on the operator.

Further, since the jet hammer is constructed so as to be swingable at the tip of the spray gun, the ash can be removed while avoiding obstacles.

[0009]

1 is a side view of an ashing tool, FIG. 2 is a plan view of the same, and FIG. 3 is an explanatory view of a swinging motion of the tool.

In these drawings, in order to remove the adhered ash adhering to the surface of the pipe 1 of various plants such as a boiler,
The pistons 7.7 built into the two sets of jet hammers 3a and 3b are brought into contact with the surface of the pipe 1, and the pistons 7.7 are driven back and forth by operating the push lever 4 of the air gun 2 to remove the adhered ash. ..

Each jet hammer 3a, 3b is attached to a mounting member 9 and is connected to a housing 11 by two shafts 10, and a spring 12 arranged on the outer periphery of the shaft 10 absorbs vibration when the jet hammers are driven. It is configured like this.

Reference numeral 13 is a bearing, 14 is a retaining ring, and 15 is a shaft end fixing plate.

The housing 11 is attached to the plate 17 together with the cushion rubber 16, and by loosening the handle 18 as shown in FIGS. 3 (a) and 3 (b), the tip can be swung and fixed, and fixed to the attachment 19.

By attaching the attachment 19 to which the tip tool having the above mechanism is attached to the air gun 2 and fixing it with the fixing bolt 20 and the fixing bands 21a and 21b, a lightweight and easy-to-carry tool is constructed.

By connecting the air joint 8b attached to the jet hammers 3a and 3b to the air joint 8a attached to the air gun 2, when the push lever 4 is pushed, the compressed air from the air intake port 5 of the air gun 2 is released. It is sent to the jet hammers 3a, 3b at the tip through an air hose (not shown), and the piston 7.7 is driven back and forth to remove the adhered ash attached to the pipe 1.

During this work, the worker keeps the state holding the handle portion of the air gun 2. However, jet hammer 3
The vibrations of a and 3b are caused by the spring 12 and the cushion rubber 16.
Vibrations to the operator can be prevented because it is absorbed by.

Further, since the mounting member 9 for pointing the jet hammer and the housing 11 are fixed to the attachment 19 via the plate 17 so as to be swingable, the swinging mechanism should be used when an obstacle exists near the pipe. By operating the handle 18, for example, 30 °, 60 ° (Fig. 3 (a),
By rotating at a free angle with (in the case of (b)), it is possible to perform the ash removal work while avoiding the collision between the obstacle and the jet hammer.

[0018]

As described above, according to the simple type ash removal tool of the present invention, the following effects can be obtained. (1) Light weight makes it easy to carry and can efficiently remove ash even in high places or in narrow spaces. (2) Since the tip tool can be multi-purposed and used in multiple machines, further effects can be obtained. (3) Allows one-touch replacement of tip tools. (For example, ash removal tool → polishing tool) (4) Since the vibration absorbing effect is high, the burden on the worker is lightened. (5) It is possible to avoid obstacles by the swinging mechanism.

[Brief description of drawings]

FIG. 1 is a side view of a simple type ash removal tool according to an embodiment of the present invention.

FIG. 2 is a plan view of the tool.

FIG. 3 is an explanatory view of the swinging motion of the tool, (a) shows 30
A state of swinging by 60 °, and a state of swinging by 60 ° is shown in FIG.

[Explanation of symbols]

 1 Piping 2 Air Gun 3a, 3b Jet Hammer 4 Push Lever 5 Air Intake Port 7 Piston 8a, 8b Air Joint 9 Mounting Metal Fitting 10 Shaft 11 Housing 12 Spring 16 Cushion Rubber 17 Plate 18 Handle 19 Attachment 21a, 21b Fixed Band

Claims (1)

[Claims] 1. A ash-deleting jet hammer that drives a piston and adheres to the surface of an object to be processed is attached to a compressed air blowing spray gun through a cushion slide and a vibration-proof rubber, and the jet hammer is attached to the spray gun. A simple ash removal tool characterized in that the tip hammer is swingably mounted, and the jet hammer and a spray gun are connected via an air joint.