JPH10246368A - Annular joint of circular column body or circular cylinder body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple cylindrical or columnar joint that is easily connectible at a job site without using any welding or the like as well as without overhanging a flange. SOLUTION: A male taper cylinder body 10 with an outer circumferential surface on a conical tapered surface 11 and a female taper cylinder body 20 with an inner circumferential conical tapered surface 21 externally fitted and engaged with the conical tapered surface 11 of the male taper cylinder body 10 both are made so as to be thrustingly engaged with each other, while wall thickness in plural positions on the circumference of the female taper cylinder body 20 is formed into such a form as provided with a bulge to be bulged to the outside of a circle along a bus bar of the cylinder body, and then two serration circumferential projection strap 31 and 32 at a right angle to a shaft each are installed in both conical tapered surfaces of the male taper cylinder body 10 and the female taper cylinder body 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for connecting ends of a circular column or cylinder.

[0002]

2. Description of the Related Art Conventionally, pipes, piles, poles, etc.
BACKGROUND ART Weld joints by field welding, mechanical joints such as flanges, screws, and sleeves, and others are known. Welded joints have the problem of requiring special technicians and have the disadvantage of being governed by the weather. The flange joint has a problem that the outer diameter becomes large, and the threaded joint requires twisting and may not be applicable. There is also a method of tightening with multiple divided taperings, but the number of parts increases.

[0003] In addition, a cylindrical or cylindrical joint, in the circumferential direction,
There are also differences in applications, such as those that allow axial movement, those that completely restrict movement, those that transmit thrust or rotational force, and those that require a seal.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple joint which can be easily connected on site without using welding or the like and without projecting a flange or the like.

[0005]

Means for Solving the Problems A first invention of the present invention is:
A male tapered cylindrical body having a conical tapered surface on an outer peripheral surface; and a female tapered cylindrical body having an inner peripheral surface conical tapered surface fitted and engaged with the conical tapered surface of the male tapered cylindrical body. The cylindrical body is formed in a shape having a bulging portion in which the meat at a plurality of positions on the circumference of the cylindrical body bulges outward along the generatrix of the cylindrical body. This is a cylindrical ring joint.

According to a second aspect of the present invention, there is provided a male tapered cylindrical body having a conical tapered surface on an outer peripheral surface, and an inner peripheral surface conical tapered surface fitted to and engaged with the conical tapered surface of the male tapered cylindrical body. A circular column or circular cylinder comprising a plurality of sunk portions along a generating line on one or both conical tapered surfaces of the male tapered cylindrical body and the female tapered cylindrical body. It is an annular joint of the body.

The circular joint of the circular cylinder or the circular cylinder according to the present invention has the same shape perpendicular to the axes of the male tapered cylinder and the female tapered cylinder on the conical tapered surfaces of the male tapered cylinder and the female tapered cylinder, respectively. It is preferable to provide a circumferential ridge, and the circumferential ridge preferably has a saw-toothed shape in the axial direction of the cylindrical body, in which the male tapered cylindrical body and the female tapered cylindrical body mesh with each other in opposite directions. In addition, a circumferential seal groove is provided on one or both of the male tapered cylindrical body and the female tapered cylindrical body so as to ensure the sealing performance of the joint portion, so that the tapered portions of the male tapered cylindrical body and the female tapered cylindrical body are provided. Even if there is a swelling portion or a slack portion, it can be used as a joint such as a pipe joint which requires sealing properties.

In the present invention, a circular column or a circular cylinder refers to a solid cylindrical structure, a hollow cylinder or a mixture thereof, and more specifically, a column, a pipe,
Refers to a pile or the like. Further, the male tapered cylinder and the female tapered cylinder provided at these connection ends are the same as the circular column or the circular cylinder, separate bodies connected by welding or the like, embedded in concrete or the like. It may be integrated and separate.

The circular joint of the circular column or the cylindrical body is
A male tapered cylindrical body having a tapered taper and a female tapered cylindrical body which is fitted to the outside of the tapered cylindrical body are axially pushed and fitted to connect a circular column or a circular cylindrical body. In the first invention of the present invention, the female tapered cylindrical body has a shape having a bulging portion in which the meat at a plurality of positions on the circumference of the cylindrical body bulges outward along the generatrix of the cylindrical body. Have. For example, the cross-sectional shape of the female tapered cylinder may be a portion bulging outward in the radial direction near a position corresponding to a vertex position such as a triangle, a quadrangle, a hexagon, and an octagon. By providing this bulging portion, it is easy to push the male taper cylinder into the female taper cylinder, and the bulging portion does not come into contact with the male taper cylinder, and elastically deforms the hoop tension to the female taper cylinder. And the male and female tapered portions other than the bulging portion are tightly engaged with each other. When this type of female tapered cylinder is combined with a cylindrical body having a circumferentially uneven strip or a saw-toothed circumferential unevenness, even if the height of the circumferentially uneven strip or the saw-tooth circumferential unevenness is increased, the push-in engagement is performed. Is preferred because it is simpler.

In the second aspect of the present invention, a plurality of squeezed portions along the generatrix are provided on one or both conical tapered surfaces of the male tapered cylinder and the female tapered cylinder. It is preferable to provide a plurality of such sunk portions, for example, on a circumferential portion of a cross section at an equal central angle.
By providing this slack portion, it becomes easy to push the male taper cylinder into the female taper cylinder, and the slack portion becomes an elastic deformation portion that applies hoop tension or hoop compression force to the taper cylinder without contacting each other, The male and female tapered portions other than the slim portion are tightly engaged with each other. Similarly to the first aspect, when the tapered cylindrical body is provided with a circumferentially uneven strip or saw-tooth-shaped circumferential unevenness on the tapered surface, the height of the circumferentially uneven strip or the sawtooth-shaped circumferential unevenness is increased. Even if the number increases, it is easy to push the male tapered cylinder and the female tapered cylinder into engagement with each other, and on the other hand, the escape resistance is increased, which is preferable.

The male tapered cylindrical body and the female tapered cylindrical body may preferably have mating conical tapered surfaces having the same gradient as each other. However, the present invention is not limited to this, and the male tapered cylindrical body and the female tapered cylindrical body are not limited thereto. The body may have a mating conical taper surface that has a gradient that is entirely or partially different from each other, for example, the pushing force may be increased to make firm engagement.

The slope of the conical taper surface is 1 / side on one side.
It is good to set it in the range of 10/1/50. It is not easy to form a joint that is difficult to pull out with a gradient greater than 1/10,
When the gradient is smaller than 1/50, the surface pressure of the tightening surface (taper surface) fluctuates greatly due to slight fluctuation of the pushing force, which is not appropriate. In addition, the conical tapered surface of the male tapered cylindrical body and the female tapered cylindrical body may be a smooth surface. This circumferential unevenness can increase the force in the exit direction when the cross-sectional shape in the axial direction of the cylindrical body is saw-toothed.

The above annular joint of a circular column or a circular cylinder can be suitably used when the circular column or the circular cylinder is a steel pipe or a steel pipe pile. Can be applied when is a concrete pillar or a concrete pile. Of course, it can be used as a joint between a steel member and a concrete member, or as a joint between a steel and concrete composite member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The annular joint of a circular column or a cylindrical body according to the present invention can be easily connected by pushing male and female conical tapers into each other in the axial direction and penetrating them. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a circular column or circular cylinder 100a and 1 according to an embodiment of the present invention.
It is a longitudinal cross-sectional view of the annular joint of the connection part of 00b. The circular column or the cylindrical body 100a has a conical tapered surface 11 on the outer peripheral surface.
Is connected to the other circular column or the circular cylindrical body 100b by a female tapered cylindrical body 20 having an inner peripheral conical tapered surface 21.
3 are joined. The annular joint of the circular column or the circular cylinder of the embodiment is composed of the male tapered cylinder 10 and the female tapered cylinder 20.
It is composed of The conical tapered surface 11 of the male tapered cylinder 10 is inserted into and taperedly connected to the inner peripheral conical tapered surface 21 of the female tapered cylinder 20.

The tapered connection is pushed by a jack (not shown) that pushes the male tapered cylinder 10 into the female tapered cylinder 20. The jack is engaged with a groove 14 provided on the outer periphery of the male tapered cylinder 10 and a groove 24 provided on the outer periphery of the female tapered cylinder 20, and the two are drawn together and joined. Male tapered cylinder 10
The inner surface 12 and the outer surface 22 of the female tapered cylindrical body 20 are flat cylindrical bodies, each of which has a circular cylindrical body or a circular cylindrical body 10.
It is formed along the inner and outer diameters of 0a and 100b.

As shown in FIG. 1, the male tapered cylinder 10 seen from the direction of arrows AA in FIG. 1 is a perfect circle. The outer peripheral surface is a tapered surface, and a circumferential ridge 31 is provided. FIG. 3 is FIG.
The female tapered cylindrical body 20 has a bulging portion 41 at which the flesh of the cylindrical body bulges outward at a plurality of positions on the circumference of the circular cylinder along the generatrix of the cylinder. It has a shape having. There is an arc portion 42 between the bulging portions 41, 41, and this portion has a size to be engaged with the outer periphery of the male tapered cylinder 10. FIG. 4 shows a state in which the male tapered cylinder 10 of FIG. 2 and the female tapered cylinder 20 of FIG. 3 are engaged with each other. In the male tapered cylinder 10, the circular portion 42 of the female tapered cylinder 20 and the serrated circumferential ridge 31 are engaged with each other. The bulging portion 41 acts as a spring, and when the male tapered cylinder 10 is pushed into the female tapered cylinder 20, it deforms in accordance with the pushing force, so that it can easily climb over the circumferential ridge provided on the tapered surface. As shown in FIG. 5, there is an advantage that the circumferential projection 31 having a shape in which the saw tooth height 32 is high can be provided, and the engagement of the saw tooth can be deepened.

When the annular joint of the present invention is used as a joint for a pipe, it is necessary to maintain a sealing property because there is a bulged portion or a sunk portion where the male and female tapered cylinders do not contact. As shown in FIG. 1, by providing circumferential seal grooves 15 and 25 and inserting a ring-shaped elastic sealing material into these grooves, the sealing performance can be ensured. FIG. 6 shows an example in which the cross section of the female tapered cylinder has a triangular shape. Bulging part 41,
Even if the radius of curvature Ri of the inner diameter side of the circular arc portion 42 between the outer diameters 41 is larger than the radius of curvature Ro of the outer diameter of the male tapered cylinder engaged with this portion, as shown by the imaginary line in FIG. The body 10 pushes and expands this arc portion 42 and the female tapered cylinder 20
Combine with At this time, a strong hoop tension is generated in the bulging portion 41, and the male and female tapered cylinders are extremely tightly coupled. As can be seen from this example, the annular joint of the present invention forms a joint with excellent performance due to the hoop tension without manufacturing the roundness and the like of the tapered tubular body with strict accuracy. This annular joint can be manufactured by bending a steel plate or the like, and the cost is low.

FIG. 7 shows a female tapered cylinder according to an embodiment of the second invention of the present invention. A plurality of slack portions 35 are provided on the conical taper surface 34. Since the male tapered cylinder and the tapered surface of the female tapered cylinder do not come into contact with each other at this slack portion,
This annular joint can obtain a large coupling force with a small pushing force as in the first invention. The same is true of the ease of manufacture.

[0019]

As described above, the ring joint of a circular column or a circular cylinder according to the present invention is constructed as described above. For example, when this is used for connecting piles, the upper pile is set on the lower pile. It can be easily connected by pushing it in, and it can provide an appropriate pull-out resistance and is extremely effective for simple and quick construction without the need for welding or the like. In addition, a joint such as a pipe can be connected with good sealing properties.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an annular joint of a circular column or a circular cylinder of an embodiment.

FIG. 2 is a partial view taken in the direction of arrows AA in FIG. 1;

FIG. 3 is a partial view taken in the direction of arrows AA in FIG. 1;

FIG. 4 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 5 is a partially enlarged longitudinal sectional view of an annular joint of a circular column or a circular cylinder of the embodiment.

FIG. 6 is a partial view of an annular joint of a circular column or a circular cylinder according to another embodiment.

FIG. 7 is a partial view of an annular joint of a circular column or a circular cylinder of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Male taper cylinder 11 Conical taper surface 12 Inner surface 13 Welding part 14 Groove 15 Seal groove 20 Female taper cylinder 21 Conical taper surface 22 Outer surface 23 Welding part 24 Groove 25 Seal groove 31, 32 Convex (sawtooth) 33 Saw tooth Height 34 conical taper surface 35 sloping part 41 bulging part 42 arc part 100a, 100b circular column or circular cylinder

Claims (5)

[Claims] 1. A male tapered cylindrical body having a conical tapered surface on an outer peripheral surface, and a female tapered cylindrical body having an inner peripheral surface conical tapered surface fitted and engaged with a conical tapered surface of the male tapered cylindrical body. Wherein the female tapered cylinder has a bulging portion in which the meat at a plurality of positions on the circumference of the cylinder bulges outward along the generatrix of the cylinder. An annular joint of a circular column or a cylindrical body. 2. A male tapered cylinder having a conical tapered surface;
A female taper cylinder having an inner peripheral surface conical taper surface that is fitted and engaged with the conical taper surface of the male taper cylinder, wherein one or both of the male taper cylinder and the female taper cylinder have a conical taper An annular joint of a circular column or a cylindrical body, the surface having a plurality of slack portions along a generating line. 3. The male tapered cylindrical body and the female tapered cylindrical body have conical tapered surfaces provided with the same circumferential protrusions perpendicular to the axes of the male tapered cylindrical body and the female tapered cylindrical body, respectively. Item 3. An annular joint of a circular column or a circular cylinder according to item 1 or 2. 4. The circular column according to claim 3, wherein the circumferential ridge has a saw-toothed shape in a cylindrical axial direction, in which the male tapered cylindrical body and the female tapered cylindrical body mesh with each other. Ring joint of body or circular cylinder. 5. The circular column or circular cylinder according to claim 1, wherein one or both of the male tapered cylinder and the female tapered cylinder are provided with a circumferential seal groove. Ring joint.