JPH0830364B2 - Joining member for friction bolt joints - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining auxiliary member used for a friction bolt joining portion of a steel structure material.

[0002]

2. Description of the Related Art Friction bolt joining (high strength bolt joining) is
A method of joining steel structure materials using high-strength bolts (high-tensile bolts), in which an axial force is introduced to the bolts to strongly clamp the joining members and the stress is transmitted by the frictional resistance acting between the members. .

Conventionally, in order to increase the friction coefficient of the joint surface between the base material and the addition plate at the friction bolt joint, sufficient red rust is generated on the joint surface between the base material and the addition plate, or shot plast treatment is performed. A predetermined slip coefficient (μ = 0.45) is obtained by roughening the surface.

The former method of generating red rust is a method of removing black skin on the surface of a steel sheet by a grinder polishing machine or the like and leaving the polished surface in the air for about 2 weeks to generate red rust, and the latter shot blasting. The treatment is a method of roughening the surface of the steel sheet by shot blasting to form an appropriate unevenness.

[0005]

However, the conventional friction bolt joints described above must not slip (μ = 1.0).
Although a desired slip coefficient is obtained due to the occurrence of rust or the like, although the slip coefficient of the joint surface varies, it is difficult to manage a sufficient resistance force (slip resistance) against friction bolt joining. In order to obtain friction, both the method of generating red rust and the method of performing shot blasting are carried out at the steel frame processing plant, but a crane or other grinder sander or shot blasting machine for moving the members is required. Therefore, it requires a lot of trouble. In particular, the occurrence of rust has become a bottleneck in the steel frame processing, such as the date and time for the occurrence of predetermined rust, and a place for leaving the rust necessary.

In view of the above, the present invention provides a friction bolt joint that can artificially (steadily) obtain the required sliding resistance and does not require a machining process such as rust generation in a steel frame machining factory for obtaining friction of the joint surface. The purpose of the present invention is to provide a joining assisting member for the part.

[0007]

In order to solve the above-mentioned problems, the joining auxiliary member of the first friction bolt joining portion of the present invention is a joining assistant member interposed between the base material and the addition plate in the friction bolt joining portion. It is made of a material with strength and hardness equal to or higher than that of the base material and the attached plate, such as stainless steel or ceramic, cemented carbide, cermet, etc., and has a bolt hole in the center, and one high strength bolt The blade projections surrounding the bolt holes are formed on substantially the entire surface of both sides of a plate-like body having the maximum size of the influence of the tightening force. The second joining member of the friction bolt joining portion of the present invention is a joining assistant member interposed between the base material and the addition plate in the friction bolt joining portion, and has strength and hardness equal to or higher than those of the base material and the addition plate. A plate made of an excellent material such as stainless steel or ceramic, cemented carbide, cermet, etc., having a bolt hole in the center, and having the maximum size within the range of the influence of the tightening force of one high strength bolt. A plurality of parallel, parallel blade-shaped projections that are linear are formed on both surfaces of the strip over almost the entire surface .

[0008]

In the above first means, the high-strength bolts are used for each one, and the high-strength bolts tighten the base material and the attachment plate to ensure that the blade-like projections are uniformly and reliably formed on the base material and the attachment plate. Biting and slip resistance in all directions can be obtained. In the second means, the high-strength bolts are used for each one, and the high-strength bolts tighten the base material and the attachment plate so that the blade-like protrusions bite into the base material and the attachment plate uniformly and surely. The slip resistance of is obtained.

As the plate-like member, a material having strength and hardness equal to or higher than that of a steel material (for example, SS41) usually used as a base material, for example, stainless steel or ceramic, cemented carbide, cermet or the like is used.

The plate-like body has a thickness of 1 to 10 mm including protrusions.
It is preferable to arrange several types having different thicknesses in the front and rear ranges, and by doing so, a plate thickness adjusting function can be provided when joining base materials having different thicknesses.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 are a plan view and a half-sectional side view of a joining auxiliary member of a friction bolt joining portion according to an embodiment of the present invention.

Joining auxiliary member 1 of this friction bolt joining portion
Is formed by forming concentric blade-shaped projections 4 centered on the bolt hole 2 on both sides of a circular plate-shaped body 3 having a bolt hole 2 at the center.

The joining assisting member 1 is made of a material having strength and hardness equal to or higher than that of a base material and an attached plate, which will be described later, such as stainless steel, ceramics, cemented carbide, or cermet.
One high-strength bolts in the maximum range of the sphere of influence of the clamping force magnitude, for example, high strength bolts diameter 16～30Mm, if the plate thickness 12mm of添板, the size of the post before the outer diameter 40~90mm There are several different types that have different thicknesses in the range of about 1 to 10 mm including the protrusions 4.

As shown in FIG. 3, the joining assisting member 1 having the above-described structure is made of a structural material such as SS41 and is made of the same structural material as the end portions of the base materials 5 such as steel frames which are linearly butted against each other. The high-strength bolt 7 that is interposed between the end plates of the base materials 5 and the attachment plates 6 arranged on both sides of the base material 5 and has the bolt holes 2 and the attachment plates 6 and the base material 5 inserted therethrough. By tightening one by one, all the blade-shaped projections 4 bite into the surfaces of the base material 5 and the addition plate 6 uniformly and surely, and slip resistance in all directions can be obtained. This is to prevent the slip resistance of both of them from becoming good, and thus enhance the joint strength of the friction bolt joint portion by the high-strength bolt 7.

The joining assisting member 1 is not limited to the one shown in FIGS. 1 and 2, but a bolt hole 9 is formed in the central portion like the joining assisting member 8 shown in FIGS. 4 and 5, for example. A spiral blade-shaped projection 11 centering on the bolt hole 9 is formed on both surfaces of the plate-shaped body 10 provided, or the bolt hole 13 is formed in the center portion like the joining assisting member 12 shown in FIGS. 6 and 7. Radial blade-shaped projections 15 centered on the bolt holes 13 may be formed on both surfaces of the plate-shaped body 14 provided with the, or as shown in FIG. 8 and FIG. A plurality of parallel blade-shaped projections 19 forming a linear shape in the radial direction may be formed on both surfaces of the plate-like body 18 having the bolt holes 17 in the portion. In the case of this blade-shaped projection 19, the above-mentioned blade-shaped projections 4, 1
1, 15 generate sliding resistance in all directions, but generate sliding resistance in one direction orthogonal to the extending direction thereof. Here, the shapes of the plate-like bodies 3, 10, 14, 18 and the blade-like projections 4, 11,
The size, number, etc. of 15, 19 may be changed as appropriate, or the required portions of the blade-shaped projections 4, 11, 15, 19 may be cut.

Further, the blade-shaped projections 4, 11, 15, 19 of the joining assisting members 1, 8, 12, 16 are not limited to the case where both surfaces are formed identically, but the blade-shaped projections 4, 11, 15, 19
It is also possible to change the arrangement and the like according to need.

Further, it is preferable that the joining assisting members 1, 8, 12 and 16 have magnetic or adhesive properties, and workability can be improved by doing so.

Furthermore, the joining assisting members 1, 8, 12, 16
Is preferably subjected to rusting treatment or rustproofing treatment. By doing so, the joining strength at the friction bolt joint can be increased or rusting can be prevented.

The surfaces of the base material 5 and the attachment plate 6 on which the joining assisting members 1, 8, 12, 16 are interposed may be in the state of black skin or rust preventive paint.

[0020]

As described above, according to the joining assisting member for the friction bolt joining portion of the present invention, the blade-shaped projections are uniformly formed on the base material and the addition plate by tightening the base material and the addition plate with the high-strength bolt. Since it bites reliably and slip resistance in all directions or one direction is obtained, the tightening force of high-strength bolts can be used efficiently, and there is no variation in the slip coefficient as in the past, and it is artificial. The required slip resistance can be obtained, and it is not necessary to perform processing such as rust generation in a steel frame processing factory in order to obtain friction, and it is possible to easily and reliably perform on-site joining by friction bolt joining . Also , since each high-strength bolt is used, the bolt arrangement can be set arbitrarily, and the base material and attachment plate when tightening the high-strength bolts
Good compatibility with and can be used as a base material and attachment plate
There was variation in the distance between the two due to the warp and twist of
Even if it is, it can be effectively absorbed, and in addition, the joining auxiliary member is lightweight and small in size, which makes it convenient to carry. Furthermore, joining
Different plate thicknesses by varying the thickness of the auxiliary member
When the base materials are butt-joined using an attachment plate,
Can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view of a joining auxiliary member of a friction bolt joining portion according to an embodiment of the present invention.

FIG. 2 is a half sectional side view of a joining assisting member of a friction bolt joining portion according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a friction bolt joint portion joined by using the joining auxiliary member according to the embodiment of the present invention.

FIG. 4 is a plan view of a joining assisting member of a friction bolt joining portion according to another embodiment of the present invention.

FIG. 5 is a half sectional side view of a joining assisting member of a friction bolt joining portion according to another embodiment of the present invention.

FIG. 6 is a plan view of a joining assisting member of a friction bolt joining portion according to still another embodiment of the present invention.

FIG. 7 is a half sectional side view of a joining assisting member of a friction bolt joining portion according to still another embodiment of the present invention.

FIG. 8 is a plan view of a joining assisting member of a friction bolt joining portion according to still another embodiment of the present invention.

FIG. 9 is a half sectional side view of a joining assisting member of a friction bolt joining portion according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joining assistant member 2 Bolt hole 3 Plate-like body 4 Blade-like protrusion 8 Joining assistant member 9 Bolt hole 10 Plate-like body 11 Blade-like projection 12 Joining assistant member 13 Bolt hole 14 Plate-like body 15 Blade-like projection 16 Joining assistant member 17 Bolt hole 18 Plate 19 Blade protrusion

Claims (2)

[Claims] 1. A joining auxiliary member interposed between a base material and an addition plate in a friction bolt joining portion, which is superior in strength and hardness to the base material and the addition plate, for example, stainless steel, ceramics, or cemented carbide. , A cermet, etc., with a bolt hole in the center, and a blade shape surrounding the bolt hole on both sides of a plate-like body having the maximum size within the range of the influence of the tightening force of one high-strength bolt A joining auxiliary member for a friction bolt joining portion formed by forming projections over substantially the entire surface . 2. A joining auxiliary member interposed between a base material and an addition plate in a friction bolt joint, which is superior in strength and hardness to the base material and the addition plate, for example, stainless steel, ceramics, or cemented carbide. , A cermet, etc. with a bolt hole in the center and a linear shape on both sides of a plate-like body having the maximum size within the range of being affected by the tightening force of one high-strength bolt over a parallel blade Article projections over substantially the entire surface
Auxiliary bonding member of the friction bolt joint obtained by forming Te.