JP2000006049A - Drive-it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct reinforcing work stably underwater by means of a retainer with corrosion protective covering of steel material even in water stream or in the water with high waves. SOLUTION: A pressure member 15 in which a band-shaped protrusion 17 rises on a board 16 is overlaid on an organic resin layer 19 serving as a corrosion preventive coating of steel material 18, and a tack 21 is driven into it and fixed to maintain adhesiveness of the organic resin layer 19. For this purpose, a guide part 4 coming into contact with band-shaped protrusion 17 at mutual side face and guided in the axial direction is formed at the front end of a housing 1. The pressure member 15 is overlaid on the organic resin layer 19 without being dropping by engagement of the band-shaped protrusion 17 with the guide part 4, thereby providing a stable attitude for a tacker.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure having an anticorrosion coating on the surface of a steel material, and more particularly to a rivet gun used for reinforcing the anticorrosion coating of a structure installed in water.

[0002]

2. Description of the Related Art Steel materials such as H-section steels, steel pipes, steel sheet piles, steel sheet piles and the like are used in many fields such as landfills, river embankments, port piers, and piers. Steel materials used in these marine and river environments are generally exposed to seawater or river water, so that they are generally protected from corrosion, and an organic resin layer is often used as a means of preventing corrosion.

[0003] That is, an organic resin is undercoated on the surface of a steel material which has been subjected to base treatment, and an organic resin layer having a desired thickness made of paint or polyethylene is provided thereon to form an anticorrosion coating. This is a technique known as the law.

[0004]

The above-mentioned anticorrosion coating cannot prevent the adhesion at the interface from decreasing over time, and especially in an environment exposed to seawater or river water, the anticorrosion coating cannot prevent water currents and waves. There is a concern that when placed in a place subject to force, a decrease in adhesion is promoted, and eventually the coating may peel off and lose its anticorrosion function.

[0005] As a countermeasure, a plate-like pressing member is superimposed on an organic resin layer coated on a steel material, and these fixing members are fixed to the steel material by penetrating the pressing material and the organic resin layer. It is conceivable that the anticorrosion coating is reinforced by bringing the anticorrosion coatings into close contact with each other.

When the above measures are applied to an existing underwater structure, reinforcement work must be performed underwater, but underwater work must be performed easily and quickly in consideration of the burden on the worker. You. To do this, use the explosive gas pressure of gunpowder to fire a stud, drive it into a hard target, and fasten the member to the surface, bring a widely known stud gun underwater and from above the holding material It is advantageous to drive the fastener as a fastener.

However, such reinforcing work is often performed at a place where the adhesion of the anticorrosive coating has been reduced or at a place where the anticorrosive coating has just come off or has come off. There are many places that receive the power of waves. Therefore, when the worker takes a driving posture with a stapling gun and a holding material, the body and the stud gun swing and the holding material should be piled up at the required reinforcing point and held down by the barrel tip of the stud gun. It is difficult to take such a long time as to be ready for the driving, and there is a risk of dropping the holding member.

According to the present invention, the holding material stacked on the organic resin layer is fired with a rivet gun, fixed by the rivet cut into the steel material, and separated by sandwiching the organic resin layer between the steel material and the holding material. An object of the present invention is to make it possible to easily and surely perform a work of keeping the steel material in close contact with a steel material even in a place where water currents and waves are severe.

[0009]

SUMMARY OF THE INVENTION The present invention has a thickness sufficient to bring an organic resin layer into close contact with a steel material and to provide a sufficient reinforcing effect, and to prevent a stud from being completely driven and lifted up. Is required for the pressing material, and it is premised that a pressing member provided with a band-shaped protrusion on a plate body to be overlaid on the organic resin layer is used as the pressing material. The band-shaped projections function as reinforcing ribs of the plate body, and enhance the strength of the entire holding member. Therefore, it is possible to make the plate thin so as not to cause a large resistance of driving the stud, and it is possible to prevent the organic resin layer from stably adhering to the steel material without lifting due to insufficient driving.

[0010] In the stud gun according to the present invention, a guide portion which comes into contact with the strip-shaped projections on the side surface thereof and guides in the axial direction is provided at the tip end of a housing in which the barrel into which the studs are to be loaded is axially movable. It is provided.

As the pressing member, there are a member having one band-shaped protrusion and a member having a plurality of band-shaped protrusions. Therefore, the guide portion has a guide groove fitted to the band-shaped protrusion and can be applied to any pressing member, or a plurality of cubic or cylindrical shapes fitted between adjacent band-shaped protrusions. It is preferable to apply the present invention to a holding member having a band-shaped projection.

Incidentally, these guide portions are formed integrally with the housing or formed separately.

[0013] Then, the plate body is overlaid on the organic resin layer in a state where the band-shaped projection and the guide portion are fitted to each other and the pressing member is held at the front end of the housing, or the plate body is placed on the organic resin layer. After overlapping on the resin layer, the guide portion is fitted to the strip-shaped projection. Next, when the rivet gun is pressed against the plate body to fire the rivet, the swivel movement of the rivet gun is received by the band-shaped projections that are in contact with the guide portion on the side, but the plate body comes into surface contact with the organic resin layer. Because of this, the surface contact portion is prevented from swinging, and a stable driving posture can be obtained. Also, since the holding material in the engaged state with the tacking gun does not fall even if the hand is released, the operator can operate the tacking gun with both hands,
The driving posture can be taken with plenty of time. That is, the purpose of easily and reliably performing the reinforcing work even in a place where water currents and waves are severe is achieved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described with reference to the drawings. In each embodiment, the tacking gun of the present invention has a grip and a pull for holding with one hand at the tail end. A cylindrical housing 1 in which gold is arranged, a barrel 3 having a medicine chamber at the tail end and having a piston included in a barrel 2 and incorporated in the housing 1 so as to be movable in the axial direction, and emptying of the medicine chamber by a trigger. A firing pin which is actuated to fire the wrapper, and presses the barrel 3 against an object to retreat relatively into the housing 1 and operates the trigger when these tip surfaces are flush with each other. To fire the empty package, and drive the piston with the explosive gas pressure of the explosive to drive the piston 2 into the tip of the gun cavity 2
1 has a well-known structure and function of driving 1 into an object.

The guide portion 4 in the first embodiment shown in FIGS. 1, 2 and 3 includes a guide piece 6 having a guide groove 5 opened to the front end and both sides. And is fixed by a screw 7 with its tip end surface being flush with the tip end surface of the housing 1 and the guide groove 5 having a thickness of a band-like projection 17 of a holding member 15 described later. And a depth slightly greater than its height.

FIG. 3 is a view for explaining an operation of reinforcing the anticorrosion coating of an underwater structure using the above-mentioned stud gun. Reference numeral 18 denotes a steel material such as H-section steel, steel pipe, steel pipe sheet pile, steel sheet pile, and the like. Is an organic resin layer such as polyolefin, polyurethane, polyvinyl chloride, etc. coated on its surface, the former having an average thickness of about 10 mm, and the latter having a thickness of at least about 1 mm. . The pressing member 15 is usually made of FRP or stainless steel. The former has a thickness of about 0.7 to 7 mm, and the latter has a thickness of 0.1 to 3 m.
m, the length is preferably 150 mm or more, and the height of the band-shaped projection 17 is preferably about 40 to 100 mm.

In the embodiment shown in the drawings, an L-shaped pressing member 15 having a band-shaped projection 17 at one end is used.
Then, in the reinforcing work, the band-shaped projection 17 is fitted into the guide groove 5 and the plate 16 is brought into contact with the distal end surface of the barrel 3 to hold the holding member 15 at the distal end of the housing 1 (FIG. 3). The plate 16 is overlaid on the organic resin layer 19 as shown in FIG. When the plate members 16 are stacked in surface contact with each other, the driving gun is in a stable state, and the organic resin layer 19 is formed.
To a right angle.

When the housing 1 is pushed forward, the guide grooves 5 are gradually deeply fitted into the belt-like projections 17 and guided so as to move straight by mutual contact on both side surfaces, and FIG.
As shown in (B) of FIG.
Leads to the end. At this time, the stud gun can be fired, and the stud 21 is fired by operating the trigger to fire the empty package, and the stud 21 penetrates through the plate 16 and the organic resin layer 19 and bites into the steel material 18, As shown in FIG. 3C, the head 21a comes into contact with the surface of the plate 16 and stops.

The second and subsequent studs 21 are strip-shaped projections 17 of the holding member 15 fixed to the underwater structure by the first stud 21.
The guide groove 5 can be fitted into the groove and driven in the above-described manner. In any case, since the stud gun is performed in a right-angled posture, the stud 21 is not driven obliquely.

The steps shown in FIGS. 3A and 3B in the above-mentioned reinforcing work step, that is, the front end surface of the barrel 3 is pressed against the plate body 16 to make surface contact with the surface of the organic resin layer 19 and guide When the force of the water current or the wave is received in a state where the portion 4 and the band-shaped projection 17 are fitted to each other, even if the stud gun swings, the holding member 15 swings integrally, and these separate to hold the holding member 15 apart. It does not fall. Also, by pressing the barrel 3 against the plate 16 with a moderate force, the surface contact portion is prevented from tilting due to a force that tends to swing,
A stable driving posture can be easily obtained.

The guide portions 8 in the second embodiment shown in FIGS. 4, 5 and 6 correspond to the pressing members 15 having a plurality of parallel belt-like projections 17 and are adjacent to each other. It is formed in a three-dimensional shape with one side having a length slightly shorter than the interval between the band-shaped protrusions 17, and is fitted to the outer peripheral surface of the housing 1 with its front end surface aligned with the front end surface of the housing 1. It is solidified by screws 9.

FIG. 6 is a diagram for explaining an operation of reinforcing the anticorrosion coating of an underwater structure using the above-mentioned stud gun.
The guide portion 8 is fitted between the band-shaped protrusions 17 of the U-shaped pressing member 15 having the band-shaped protrusions 17 erected at right angles on both side edges of 6, and the tip end surface of the barrel 3 is brought into contact with the plate body 16. As a state, the plate body 16 is overlaid on the organic resin layer 19 in FIG. When the plate members 16 are stacked in surface contact, the stud gun is in a stable state, and has a posture perpendicular to the organic resin layer 19.

When the housing 1 is pushed forward in order to operate the stapling gun, the guide portions 8 are mutually brought into contact with at least one of the side surfaces in a state where the opposing side surfaces are almost in contact with the band-shaped projections 17 and are sandwiched therebetween. 6B, it moves forward while guiding the vehicle to go straight, and the leading end surfaces thereof come into contact with the plate 16 as shown in FIG. At this time, the stud gun can be fired, and the stud 21 is fired by operating the trigger to fire the empty package, and the stud 21 is attached to the plate 16,
Penetrate the organic resin layer 19 at a right angle and bite into the steel material 18;
As shown in FIG. 6C, the head 21a comes into contact with the surface of the plate 16 and stops.

When the force of the water current or the waves is received at the stage shown in FIGS. 6A and 6B in the above-mentioned reinforcing work process, the holding member 15 swings integrally even if the stud gun swings. However, the holding member 15 does not fall off. Further, by pressing the barrel 3 against the plate 16 with excessive force, the surface contact portion is prevented from tilting due to the force of swaying, and a stable driving posture can be easily obtained.

In the above two embodiments, the holding member 15 is superimposed on the organic resin layer 19 with one hand, and the guides 4 and 8 of the driving gun held by the other hand are connected to the band-like projections 17.
The reinforcement work can be started by the procedure of engaging with the. In this case as well, after the engagement, the work can be continued without dropping even if the hand is released from the pressing member 15.

In the above two embodiments, the head 21a of the stud 21 biting into and fixed to the steel material 18 functions as a retaining member for the holding member 15 and is fixed. To maintain the state of being in close contact with each other.

The third embodiment shown in FIG.
In the first embodiment shown in FIGS. 1 and 2, two guide pieces 6 are superimposed on the outer peripheral surface of the distal end of the housing 1 at positions opposite to each other with respect to the center axis of the barrel 3, and fixed by screws 7. The guide unit 10 is tied.

In this embodiment, the guide grooves 5 on both sides are fitted into the two belt-shaped projections 17 to obtain a more stable posture than in the first and second embodiments. The pressing member 15 having one band-shaped projection 17 can be fixed using only the groove 5, which is convenient.

The device of the fourth embodiment shown in FIG.
The diameter of the distal end portion of the housing 1 is increased to form a cylindrical guide portion 11.
It is what it was. This corresponds to a holding member 15 having a plurality of parallel belt-like projections 17, and the guide portion 10 has a diameter slightly shorter than the interval between two adjacent belt-like projections 17. It is made.

In this embodiment, the guide member 10 is fitted between the two strip-shaped projections 17 to fix the holding member 15 in the same handling and procedure as in the second embodiment.

In the second, third and fourth embodiments, in the second embodiment, engagement with the holding member 15 is performed by changing the phase by 90 degrees. In the case of the form of the above, engaging by changing the phase by 180 degrees,
The fourth embodiment can be engaged in any phase, can be used without being restricted by the installation direction of the holding member 15 and obstacles, and performs reinforcement work in various places. To make things possible.

The guides 4, 8, and 10 are connected to the housing 1
And made separately and screwed with screws 7 and 9,
Changing the driving position of the stud 21 with respect to the band-shaped projection 17 by preparing and exchanging one having a different size;
The two band-shaped projections 17 are made to correspond to the holding members 15 having different intervals, and the guide portions 4, 8, and
10 can be used properly, and the effective use of the tacking gun can be achieved.

[0033]

As will be understood from the above description, by using the tacking gun of the present invention, the holding material is fixed and the corrosion protection coating is reinforced even in a place where the work is difficult due to the force of water currents and waves. The work can be easily and reliably performed in a stable posture.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is an explanatory diagram of a use state of the first embodiment.

FIG. 4 is a longitudinal sectional view of a main part showing a second embodiment of the present invention.

FIG. 5 is a bottom view of FIG. 4;

FIG. 6 is an explanatory diagram of a use situation of the second embodiment.

7A and 7B show a third embodiment of the present invention, wherein FIG. 7A is a longitudinal sectional view of a main part, and FIG. 7B is a bottom view.

8A and 8B show a fourth embodiment of the present invention, wherein FIG. 8A is a longitudinal sectional view of a main part, and FIG. 8B is a bottom view.

[Explanation of symbols]

1 housing, 3 barrels, 4, 8, 10, 11
Guide part, 5 guide groove,

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisao Yamashita 2-6-3 Otemachi, Chiyoda-ku, Tokyo New Nippon Steel Corporation (72) Inventor Yoshiyuki Harada 20-1 Shintomi, Futtsu-shi, Chiba New Japan (72) Inventor Toyo Ando 6-19-13, Yawatadai, Kisarazu-shi, Chiba Prefecture (72) Inventor Akihiro Saito 2407-406, Futtsu, Futtsu-shi, Chiba Prefecture (72) Inventor, Yoshiyoshi Ono Chapter 8-8, Denen Chofu Minami, Ota-ku, Tokyo Japan Drive It Co., Ltd. (72) Inventor Yusuke Tsumura 8-10, Denen Chofu Minami, Ota-ku, Tokyo F-term (reference) in Japan Drive It Co., Ltd. 3C068 AA01 BB01 CC04 EE20 JJ20

Claims (6)

[Claims] 1. A pressing member provided with a strip-shaped projection on a plate body is laid on an organic resin layer which is an anticorrosive coating coated on a steel material, and the plate material and the organic resin layer are penetrated to attach a stud to the steel material. By driving the steel material and the organic resin layer to adhere to each other to fix the presser material, thereby reinforcing the anticorrosion coating. A stapling gun, characterized in that a guide portion is provided at an end portion of a housing incorporated in an axially movable manner so as to come into contact with the band-shaped projection of the pressing member on the side surface and to guide the band-shaped projection in the axial direction. 2. The rivet driving gun according to claim 1, wherein the guide portion is provided outside the distal end portion of the housing, and has a guide groove that fits into the band-shaped projection. 3. A stud gun used for reinforcing the anticorrosion coating by fixing a plurality of band-shaped projections provided as parallel to the pressing member, wherein the guide portions are adjacent to each other. 2. The rivet according to claim 1, wherein the side of the rivet has a length substantially equal to the interval between the protrusions. 4. A stud driving gun used for reinforcing the anticorrosion coating by fixing a plurality of band-shaped projections provided as parallel to the pressing member, wherein the guide portions are adjacent to each other. 2. The rivet driving gun according to claim 1, wherein the driving gun has a cylindrical shape having a diameter substantially equal to a distance between the projections. 5. The rivet driving gun according to claim 1, wherein the guide is integral with the housing. 6. The rivet driving gun according to claim 1, wherein said guide portion is formed separately from said housing.