KR102392745B1 - Connector of steel piles - Google Patents

Abstract

The present invention relates to a steel pipe pile connector that can secure sufficient torque resistance performance when rotating a steel pipe pile, can attach a rotating penetration device without an operator, and have the upper and lower connectors formed in the same shape and can be manufactured in a single standard.
The present invention steel pipe pile connector includes a ring-shaped first connector coupled to the upper end of the lower steel pipe pile, a ring-shaped second connector coupled to the lower end of the upper steel pipe pile, and the first connector and the second connector in contact with the first connector A first body ring coupled to the outside of the connector and the second connector to be composed of a coupling band for coupling the first connector and the second connector in the axial direction, the first connector being coupled to the upper end of the lower steel pipe pile; and a first locking ring protruding from an outer surface of the first body ring; Consisting of, the second connector is a second body ring coupled to the lower end of the upper steel pipe pile; and a second locking ring protruding from the outer surface of the second body ring; It is composed of, and the coupling band is divided into at least two or more band units having an arc shape, and a locking groove portion is formed in which the first locking ring and the second locking ring are inserted and hooked on the inner circumferential surface of each band unit. .

Description

Connector of steel piles

The present invention relates to a steel pipe pile connector that can secure sufficient torque resistance performance in both directions when a steel pipe pile is rotated, it is easy to detach the rotating penetration device, and the upper and lower connectors are formed in the same shape and can be manufactured in a single standard.

A helical pile is a pile in which a spiral disk is provided at regular intervals from the tip, and after rotational penetration into the ground, the disturbed ground is grouted. It exerts its bearing power by the frictional force on the main surface that is expressed between the cylindrical ground and the adjacent surrounding ground.

These helical piles are often used for reinforcing foundations during remodeling construction due to their low noise and vibration, and excellent economic efficiency and constructability.

Helical piles rotate and penetrate into the ground using hydraulic devices mounted on small-scale equipment such as backhoes. Accordingly, the length of the pile is often limited to less than 3m, and a number of helical piles are connected and used according to the depth of penetration.

Conventionally, various pile connectors have been used to connect steel pipe piles such as helical piles.

As an example, there is a pin-type connector for connecting a pinhole-processed connecting steel pipe to one side of a steel pipe pile by welding, and inserting the end of one steel pipe pile into the end of the other steel pipe pile with a pinhole-processed pin hole.

The pin-type connector is widely used because of its simple construction and low cost compared to other methods. However, there is a gap between the diameters of the pin and the pinhole, and the pin and the pinhole mutually resist the torque generated during rotational penetration, so there is a structural weakness such as damage to the pinhole. In addition, since only the pin resists the tensile force, the pulling strength is lowered, and the insertion of the injection pipe for grouting is impossible due to the interference of the pins passing through the pile at the connection part, making it impossible to perform the tip grouting. In addition, since the connecting steel pipe is mainly used by cutting a ready-made steel pipe, there is a gap between the inner diameter of the connecting steel pipe and the outer diameter of the steel pipe pile, so there is a disadvantage that the pile is bent at the connecting part.

In addition, there is a thread-type connector in which a female and male threaded connection steel pipe is welded to both sides of a steel pipe pile and then rotated and screwed together.

However, the thread-type connector has a problem in that the cost of thread processing is high, which increases the cost. In addition, if the thread of the top connector of the pile is used for coupling with the intrusion equipment, when the file is rotated in the opposite direction for dismantling the equipment, the connection part between the piles can be released while the file itself rotates together. In order to prevent this, an additional cost increase factor occurs because it must be manufactured in the form of a hexagon nut that can transmit torque to the outside of the connector. For the same reason, in the case of construction that is conditional on ground restoration, such as an agricultural solar power plant, the pile must be rotated in reverse and pulled out from the ground.

In particular, when attaching the rotary penetration device to the top of the helix pile, work must be done at an altitude of about 3m. However, the conventional pin type or thread type requires a worker to directly attach and disassemble, so the operation is cumbersome and there is a risk of a safety accident.

In addition, a helical pile that combines a female coupling having a L-shaped locking jaw on the upper inner circumferential surface of the conventional lower shaft pile and forming a L-shaped male coupling on the lower outer circumferential surface of the upper shaft pile to combine the female coupling and the male coupling There is a shaft file connection structure for use (Patent Publication No. 10-2019-0000532).

In the prior art, since the shaft pile load is transmitted only by the shear force of a male coupling or a L-shaped locking jaw rather than the entire cross section of the upper and lower shaft piles resisting the axial load in the connection part, there is a limit to the load-resisting capacity of the connection part. In addition, when the male coupling is integrally formed on the upper shaft pile, the shaft pile processing cost increases, and even if they are attached separately by welding, only the circumference of the male coupling is fillet welded, so the shear resistance performance is limited. there is. Furthermore, due to the interference of the welding bead, it is difficult to be properly supported on the L-shaped locking jaw of the female coupling.

In addition, in the case of production using the casting method to solve the shear strength problem of the shackle part, the shape of the female coupling and the male coupling are different and must be individually manufactured, so the manufacturing cost increases and material management is cumbersome. Furthermore, the metal product in which the L-shaped protrusion or groove is formed requires a core when manufacturing the mold, and thus the manufacturing cost is high.

In order to solve the above problems, an object of the present invention is to provide a steel pipe pile connector that can secure sufficient torque resistance performance during rotational penetration of a steel pipe pile, and can easily detach and detach rotational penetration equipment without an operator's help.

An object of the present invention is to provide a steel pipe pile connector that can be manufactured in a single standard by forming the connector respectively coupled to the upper and lower steel pipe piles in the same shape.

The present invention according to a preferred embodiment is a ring-shaped first connector coupled to the upper end of the lower steel pipe pile, a ring-shaped second connector coupled to the lower end of the upper steel pipe pile, and the first connector and the second connector in abutting state It relates to a steel pipe pile connector comprising a coupling band coupled to the outside of the first connector and the second connector to couple the first connector and the second connector in the axial direction, wherein the first connector is coupled to the upper end of the lower steel pipe pile a first body ring; and a first locking ring protruding from an outer surface of the first body ring; Consisting of, the second connector is a second body ring coupled to the lower end of the upper steel pipe pile; and a second locking ring protruding from the outer surface of the second body ring; Consisting of, the coupling band is divided into at least two or more band units having an arc shape, and a locking groove portion is formed in which the first locking ring and the second locking ring are inserted and hooked on the inner circumferential surface of each band unit, the first On the outer side of the lower end of the first body ring of the connector and the upper outer side of the upper end of the second main ring of the second connector, an inclined weld groove surface for filling the weld meat between the end of the steel pipe pile is formed, respectively, and the first body ring of the first connector It provides a steel pipe pile connector, characterized in that a plurality of spaced protrusions for separating the end of the steel pipe pile from the end of the body ring are respectively protruded from the lower surface and the second body ring upper surface of the second connector.

In the present invention according to another preferred embodiment, the first coupling protrusion and the first coupling groove are alternately arranged in a sawtooth shape on the top surface of the first body ring of the first connector, and on the lower surface of the second body ring of the second connector It provides a steel pipe pile connector, characterized in that the second coupling protrusion fitted to the first coupling groove portion and the second coupling groove portion into which the first coupling projection is fitted are alternately arranged in a sawtooth shape.

In the present invention according to another preferred embodiment, the first coupling protrusion and the second coupling protrusion and the first coupling recess and the second coupling recess are each formed in the same shape as each other, and the coupling protrusion is symmetrical in shape to the coupling recess. It provides a steel pipe pile connector, characterized in that the side surfaces of the first coupling protrusion and the second coupling protrusion are configured to be in close contact with each other.

The present invention according to another preferred embodiment is characterized in that the guide ring inserted into the inside of the steel pipe pile is formed to protrude from the inner side of the lower end of the first body ring of the first connector and the upper inner side of the upper end of the second body ring of the second connector. Steel pipe pile connectors are provided.

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The present invention according to another preferred embodiment provides a steel pipe pile connector, characterized in that a coupling plate is provided at the end of the band unit and coupled to the coupling plate of the neighboring band unit with bolts and nuts.

The present invention according to another preferred embodiment provides a steel pipe pile connector, characterized in that a pair of reinforcing ribs are provided between the coupling plate and the band unit.

According to the present invention, there are the following effects.

First, in a state in which the first and second connectors coupled to the upper and lower steel pipe piles are in close contact with each other, the engaging ring protruding outside the body ring of the first and second connectors surrounds the junction of the first and second connectors as a band unit of a coupling band. It is possible to provide a steel pipe pile connector through which the upper and lower steel pipe piles can be easily connected by being caught in the engaging groove of the inner circumferential surface.

Second, when the first and second connectors are formed in a sawtooth shape so that the coupling protrusions and the coupling grooves correspond to each other, and the coupling protrusions are inserted into the coupling grooves and the first and second connectors are in close contact with each other, between the coupling protrusions when the steel pipe pile enters the rotation. Sufficient torque resistance performance can be secured by side pressure and shear force between the coupling protrusion and the body ring.

Third, since the first and second connectors can be formed in the same shape, they can be manufactured in a single standard, thereby reducing costs and facilitating material management.

Fourth, when attaching the second connector to the lower part of the equipment, it is possible to simply fit the second connector of the equipment to the first connector on the top of the uppermost steel pipe pile without an operator.

1 is a perspective view showing the coupling relationship of the present invention steel pipe pile connector.
Figure 2 is a perspective view showing the upper and lower steel pipe piles connected by the present invention steel pipe pile connector.
3 is a perspective view illustrating a coupling relationship between a first connector and a second connector;
4 is a perspective view showing the coupling relationship between the rotary retraction equipment and the uppermost steel pipe pile.
Fig. 5 is a plan view showing a connector;
6 is a cross-sectional view showing a coupling relationship between a connector and a steel pipe pile.
7 is a cross-sectional perspective view showing a coupling relationship between a connector and a steel pipe pile.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

1 is a perspective view showing the coupling relationship of the present invention steel pipe pile connector, Figure 2 is a perspective view showing the upper and lower steel pipe pile connected by the present invention steel pipe pile connector.

1 and 2, the present invention steel pipe pile connector is a ring-shaped first connector 21a coupled to the upper end of the lower steel pipe pile 1a, a ring coupled to the lower end of the upper steel pipe pile 1b The shape of the second connector 21b and the first connector 21a and the second connector 21b are coupled to the outside of the first connector 21a and the second connector 21b in a state in which they are in contact with the first connector 21a ) and a coupling band 22 for coupling the second connector 21b in the axial direction, wherein the first connector 21a is a first body ring 211a coupled to the upper end of the lower steel pipe pile 1a. ; and a first locking ring 212a protruding from the outer surface of the first body ring 211a; Consists of, the second connector (21b) is a second body ring (211b) coupled to the lower end of the upper steel pipe pile (1b); and a second locking ring (212b) protruding from the outer surface of the second body ring (211b); The coupling band 22 is divided into at least two or more band units 220 having an arc shape, and the inner peripheral surface of each band unit 220 has the first locking ring 212a and the second locking ring ( 212b) is inserted, characterized in that the engaging groove portion 221 is formed.

The present invention is to provide a steel pipe pile connector that can secure sufficient torque resistance performance when rotating a steel pipe pile, can attach rotating penetration equipment without an operator, and that the upper and lower connectors are formed in the same shape and can be manufactured in a single standard will be.

The steel pipe pile connector of the present invention is applicable not only to helical piles but also to other types of steel pipe piles that are rotatably inserted.

The steel pipe pile connector 2 is a first connector 21a coupled to the lower steel pipe pile 1a, a second connector 21b coupled to the upper steel pipe pile 1b, and first and second connectors 21a, 21b) It is composed of a coupling band 22 coupled to the outside of the.

The first connector 21a and the second connector 21b can be fixed to the lower steel pipe pile 1a and the upper steel pipe pile 1b by welding, respectively.

The first connector 21a and the second connector 21b are fixed to each other by a coupling band 22 so that the upper and lower steel pipe piles 1a and 1b are connected.

The steel pipe piles 1a and 1b may be configured as a hollow cylindrical member.

The first connector 21a and the second connector 21b are formed in the same shape as a ring shape with an open top and bottom.

The first connector 21a has a first locking ring 212a protruding from the outer circumferential surface of the first body ring 211a coupled to the upper end of the lower steel pipe pile 1a.

The second connector 21b has the same configuration as the first connector 21a. That is, in the second connector 21b, a second locking ring 212b is formed to protrude from the outer circumferential surface of the second body ring 211b coupled to the lower end of the upper steel pipe pile 1b.

In a state in which the first connector 21a and the second connector 21b are in close contact with each other, the coupling band 22 is at least wrapped around the junction of the first connector 21a and the second connector 21b from the side to fix it. It is divided into two or more band units 220 .

Each band unit 220 is configured in an arc shape, and adjacent band units 220 connect the ends to each other to fix the junction of the first connector 21a and the second connector 21b.

The band unit 220 has a locking groove portion 221 formed on the inner peripheral surface of which the first locking ring 212a of the first connector 21a and the second locking ring 212b of the second connector 21b are inserted. By forming an approximately C-shaped cross section, the upper and lower steel pipe piles 1a and 1b can be easily connected.

In the present invention, the first and second connectors 21a and 21b adjacent to each other are formed in the same shape. Therefore, it is possible to manufacture the connectors (21a, 21b) with a single mold, and it is easy to manage materials, and when attached to the ends of the steel pipe piles (1a, 1b), it can be used regardless of gender.

1, etc., the end of the band unit 220 is provided with a coupling plate 222, the coupling plate 222 and the bolt (B) and the nut (N) of the neighboring band unit 220 are mutually can be combined.

An end portion of the band unit 220 may be provided with a coupling plate 222 vertically bent to the outside of the end of the band unit 220 .

Accordingly, in a state in which the coupling plate 222 is in close contact with the coupling plate 222 of the adjacent band unit 220, the bolt (B) and the nut (N) are fastened to couple the adjacent band units 220 to each other. can

Since the coupling band 22 is divided into two or more band units 220, when a tensile force is applied to the pile, a lever reaction force (prying action) is applied by the locking rings 212a and 212b inside the band unit 220. A phenomenon in which the upper and lower portions of the end of the band unit 220 are widened may occur. At this time, since the coupling plate 222 is bent in the vertical direction to the band unit 220 to reinforce the end, it is possible to prevent the phenomenon that the upper and lower ends of the band unit 220 are widened.

As shown in FIGS. 1 and 7 , a pair of reinforcing ribs 223 may be provided between the coupling plate 222 and the band unit 220 .

In order to prevent deformation of the coupling plate 222 when the adjacent coupling plate 222 is mutually fixed with the bolt (B) and the nut (N), the upper and lower portions of the coupling plate 222 have reinforcing ribs 223, respectively. can be provided.

At this time, it is preferable to configure the pair of reinforcing ribs 223 to be in close contact with the nut N so as to be fastened to the nut N only by rotation of the bolt B from one side to limit the rotation of the nut N.

3 is a perspective view showing the coupling relationship between the first connector and the second connector, and FIG. 4 is a perspective view showing the coupling relationship between the rotary retraction equipment and the uppermost steel pipe pile.

3 and 4, on the upper surface of the first body ring 211a of the first connector 21a, a first coupling protrusion 213a and a first coupling groove 214a are alternately arranged in a sawtooth shape. The second coupling protrusion 213b fitted into the first coupling groove 214a and the first coupling protrusion 213a are fitted on the lower surface of the second body ring 211b of the second connector 21b. The second coupling groove portions 214b may be alternately arranged in a sawtooth shape.

In order to transmit the torque of the equipment 3 during rotation of the steel pipe piles 1a and 1b, the upper end of the first body ring 211a and the lower end of the second body ring 211b may be formed in a sawtooth shape. .

That is, a plurality of first coupling protrusions 213a are formed to protrude to be spaced apart from each other on the upper surface of the first body ring 211a of the first connector 21a, and the first coupling protrusions 213a are disposed between the adjacent first coupling protrusions 213a. One coupling groove 214a may be formed.

The second connector 21b may also have a second coupling protrusion 213b and a second coupling groove 214b in the same manner as the first connector 21a.

The first coupling protrusion 213a and the second coupling protrusion 213b are respectively inserted into the second coupling recess 214b and the first coupling recess 214a.

The coupling protrusions 213a and 213b are formed in a trapezoidal shape to taper toward the ends, so that the coupling protrusions 213a and 213b can be easily inserted into the coupling grooves 214a and 214b.

That is, the first coupling protrusion 213a of the first connector 21a has an upper end that is narrower than the lower end and has an inclined side surface, and the first coupling groove portion 214a has an upper end wider than the lower end and has an inclined side surface. can do.

The second connector 21b may also be formed such that the lower end of the second coupling protrusion 213b is narrower than the upper end, and the second coupling groove portion 214b has the lower end wider than the upper end.

Accordingly, the coupling between the first connector 21a and the second connector 21b is very easy.

The torque between the first connector 21a and the second connector 21b is transmitted by the side pressure of the first coupling protrusion 213a and the second coupling protrusion 213b.

The torque transmitted to the coupling protrusions 213a and 213b is transmitted by the shear force of the cross section between the coupling protrusions 213a and 213b and the body rings 211a and 211b.

The sum of the cross-sectional areas between the coupling protrusions 213a, 213b and the body rings 211a, 211b so that torque resistance can be exhibited more than the torque resistance of the base material of the steel pipe piles 1a, 1b at the junction of the upper and lower steel pipe piles 1a, 1b It is preferable to make it more than the cross-sectional area of the steel pipe piles 1a and 1b.

Since the side surfaces of the first coupling protrusion 213a and the second coupling protrusion 213b are in close contact with each other to transmit torque, the rotational force can be stably transmitted without loosening of the connectors 21a and 21b regardless of rotation in either the forward or reverse direction. there is.

In addition, when only the second coupling protrusion 213b of the second coupling member 21b is fitted into the first coupling groove 214a of the first coupling member 21a, torque transmission is possible without connecting the coupling band 22.

Therefore, when the equipment (3) is coupled to the upper end of the uppermost steel pipe pile (1) and rotated, the second connector (21b) is attached to the lower part of the equipment (3), so that even without an operator, the first connector ( By simply fitting the second connector 21b of the equipment 3 to 21a), rotation can be performed (FIG. 4).

In addition, the coupling protrusions (213a, 213b) and coupling grooves (214a, 214b) of the connectors (21a, 21b) are simply alternately formed, and there is no configuration in which the connectors (21a, 21b) are bent as a whole. Therefore, there is no need for a core during the manufacturing of the mold of the connector (21a, 21b), the manufacturing cost is reduced.

At this time, the thickness of the coupling protrusions (213a, 213b) is formed to be the same as the total thickness of the body rings (211a, 211b) and the locking rings (212a, 212b), that is, the outer peripheral surface of the coupling protrusions (213a, 213b) is the locking ring ( 212a, 212b) is formed to coincide with the outer peripheral surface of the band unit 220 to support the central portion of the band unit 220, it is preferable to prevent the phenomenon that the upper and lower portions of the band unit 220 open up by the lever reaction force when the tensile force is applied to the pile.

Fig. 5 is a plan view showing a connector;

3 and 5, the first coupling protrusion 213a and the second coupling protrusion 213b and the first coupling groove 214a and the second coupling groove 214b are respectively formed in the same shape. and the coupling protrusions 213a and 213b are formed symmetrically in the same shape as the coupling grooves 214a and 214b so that the side surfaces of the first coupling protrusion 213a and the second coupling protrusion 213b are in close contact with each other. can be

While forming the first connector 21a and the second connector 21b in the same shape, the engaging protrusions 213a and 213b are completely inserted into the engaging grooves 214a and 214b, so that the first connector 21a and the second connector 21a are completely inserted. (21b) In order to configure so that there is no gap during the coupling, the first coupling protrusion 213a and the second coupling protrusion 213b are formed in the same shape and at the same time the coupling groove portions 214a, 214b and the coupling protrusions 213a, 213b are It can be formed in the same shape symmetrical to each other.

To this end, the upper and lower corners of each of the coupling protrusions 213a and 213b may be formed to face the center O of the body rings 211a and 211b (FIG. 5).

At this time, since the coupling protrusions 213a and 213b are tapered to have a narrow end, the upper edge and the end edge are not parallel to each other. Accordingly, the side surfaces of the coupling protrusions 213a and 213b are non-planar.

Since the first coupling protrusion 213a and the second coupling protrusion 213b are completely in close contact with each other, it is possible to stably and reliably transmit the compression force as well as the rotational force when the rotation penetrates.

Since the first connector 21a and the second connector 21b have the exact same shape, the first connector 21a and the second connector 21b can be manufactured with a single mold.

6 is a cross-sectional view illustrating a coupling relationship between a connector and a steel pipe pile, and FIG. 7 is a cross-sectional perspective view illustrating a coupling relationship between a connector and a steel pipe pile.

6 and 7, the inner side of the lower end of the first body ring 211a of the first connector 21a and the upper inner side of the upper end of the second body ring 211b of the second connector 21b have a steel pipe pile 1a , 1b) to be inserted into the guide ring 215 may be formed to protrude, respectively.

When the connector 21a, 21b is coupled to the end of the steel pipe pile 1a, 1b, the position of the connector 21a, 21b can be temporarily fixed until these members are welded to each other. A guide ring 215 may be formed to protrude.

Since the guide ring 215 is inserted into the inside of the steel pipe piles 1a and 1b and caught on the inner wall surface of the steel pipe piles 1a, 1b, the positions of the connectors 21a and 21b are temporarily fixed so as not to be separated laterally.

6 and 7, the first body ring 211a of the first connector 21a and the second body ring 211b of the second connector 21b are outside the upper end of the steel pipe pile 1a. , 1b) an inclined welding groove surface 216 for filling the welding ribs (W) between the ends may be formed, respectively.

When the first connector 21a and the second connector 21b are coupled to the steel pipe piles 1a and 1b, they can be firmly integrated with the steel pipe piles 1a and 1b through the penetration volume rather than fillet welding. To this end, an inclined welding groove surface 216 may be formed on the outer side of the lower end of the first body ring 211a and the upper outer side of the second body ring 211b, respectively.

Accordingly, a welding groove (groove) is formed between the welding groove surface 216 and the ends of the steel pipe piles (1a, 1b) can be filled with the welding flesh (W).

The first body ring 211a and the second body ring 211b may have an entire cross-section of an inclined welding groove surface 216 . However, in order to seat the connectors 21a and 21b on the steel pipe piles 1a and 1b to align the verticality, the inner bottom of the first body ring 211a and the top inside of the second body ring 211b are flat surfaces 217 ) is preferably formed.

As shown in FIGS. 3, 6, and 7, the lower surface of the first body ring 211a of the first connector 21a and the upper surface of the second body ring 211b of the second connector 21b have a steel pipe A plurality of spacing protrusions 218 for spacing the ends of the piles 1a and 1b from the ends of the body rings 211a and 211b may be formed to protrude, respectively.

The torque performance of the rotating penetrating steel pipe piles 1a, 1b mainly depends on the welding between the connectors 21a, 21b and the steel pipe piles 1a, 1b.

Therefore, a sufficient amount of welding flesh (W) must be penetrated when joining the steel pipe piles (1a, 1b) and the connectors (21a, 21b). To this end, the size of the weld groove surface 216 is large and the width of the flat surface 217 is Narrow is advantageous. However, even if the guide ring 215 protruding from the body ring 211a, 211b is inserted into the steel pipe pile 1a, 1b to temporarily fix the position of the connector 21a, 21b, the outer circumferential surface of the guide ring 215 and the steel pipe Between the inner peripheral surfaces of the piles 1a and 1b, there is inevitably a gap in consideration of the assembly tolerance. Accordingly, when the width of the flat surface 217 is narrowed, when there is even a slight axial center error due to the gap between the connectors 21a and 21b and the steel pipe piles 1a and 1b, the connectors 21a and 21b are connected to the steel pipe piles 1a, 1b. ), it may not be properly seated at the end, so it may be difficult to align it vertically.

Therefore, the separation protrusion 218 having a width greater than the width of the flat surface 217 is installed at the ends of the steel pipe piles 1a and 1b so that the connectors 21a and 21b can be stably seated in the body rings 211a and 211b. It can be formed to protrude at the end.

Accordingly, the welding groove surface 216 having a sufficient area can be formed.

In addition, since a sufficient root gap is formed on the rear side of the welded part by spacing between the steel pipe piles 1a and 1b and the body rings 211a and 211b by the spacing protrusion 218, the molten solution can penetrate well. Insufficient penetration phenomenon can be prevented. Therefore, sufficient torque performance can be exhibited.

It is preferable that at least three spaced protrusions 218 are formed at the ends of the steel pipe piles 1a and 1b so that the connectors 21a and 21b are stably mounted.

1: Top steel pipe pile 1a: Bottom steel pipe pile
1b: upper steel pipe pile 2: steel pipe pile connector
21a: first connector 21b: second connector
211a: first body ring 211b: second body ring
212a: first locking ring 212b: second locking ring
213a: first coupling protrusion 213b: second coupling protrusion
214a: first coupling groove 214b: second coupling groove
215: guide ring 216: weld groove surface
217: flat surface 218: spaced protrusion
22: combined band 220: band unit
221: engaging groove 222: coupling plate
223: reinforcement rib 3: equipment
B: Bolt N: Nut
W: Weld

Claims (8)

A ring-shaped first connector 21a coupled to the upper end of the lower steel pipe pile 1a, a ring-shaped second connector 21b coupled to the lower end of the upper steel pipe pile 1b, and the first connector 21a and A coupling band that is coupled to the outside of the first connector 21a and the second connector 21b in a state where the second connector 21b is in contact with the first connector 21a and the second connector 21b in the axial direction ( It relates to a steel pipe pile connector (2) consisting of 22),
The first connector (21a) is a first body ring (211a) coupled to the upper end of the lower steel pipe pile (1a); and a first locking ring 212a protruding from the outer surface of the first body ring 211a; is composed of
The second connector (21b) is a second body ring (211b) coupled to the lower end of the upper steel pipe pile (1b); and a second locking ring (212b) protruding from the outer surface of the second body ring (211b); is composed of
The coupling band 22 is divided into at least two or more band units 220 having an arc shape, and the first locking ring 212a and the second locking ring 212b are inserted into the inner circumferential surface of each band unit 220 . A locking groove 221 is formed to be caught,
On the outer side of the lower end of the first body ring (211a) of the first connector (21a) and the upper outer side of the upper end of the second body ring (211b) of the second connector (21b), there is a weld between the ends of the steel pipe piles (1a, 1b) ( W) inclined welding groove surfaces 216 for filling are formed, respectively,
The ends of the steel pipe piles 1a and 1b are attached to the lower end surface of the first body ring 211a of the first connector 21a and the upper surface of the second body ring 211b of the second connector 21b, the body ring 211a, A steel pipe pile connector, characterized in that a plurality of spaced protrusions 218 to be spaced apart from the end of 211b) are respectively formed to protrude.
In claim 1,
A first coupling protrusion 213a and a first coupling groove 214a are alternately arranged in a sawtooth shape on the upper surface of the first body ring 211a of the first connector 21a,
A second coupling protrusion 213b fitted into the first coupling groove 214a and a second coupling protrusion 213a fitted to the lower end surface of the second body ring 211b of the second connector 21b are fitted. A steel pipe pile connector, characterized in that the coupling grooves (214b) are alternately arranged in a sawtooth shape.
In claim 2,
The first coupling protrusion 213a and the second coupling protrusion 213b and the first coupling recess 214a and the second coupling recess 214b are respectively formed in the same shape as each other, and the coupling protrusions 213a and 213b are A steel pipe pile connector, characterized in that the coupling grooves (214a, 214b) are formed symmetrically in the same shape so that the side surfaces of the first coupling protrusion (213a) and the second coupling protrusion (213b) are in close contact with each other.
In claim 1,
A guide ring ( 215) is a steel pipe pile connector, characterized in that each protruding.
delete delete In claim 1,
A coupling plate 222 is provided at the end of the band unit 220, and the coupling plate 222 of the neighboring band unit 220 is coupled to each other with a bolt (B) and a nut (N). connector.
In claim 7,
A pair of reinforcing ribs (223) are provided between the coupling plate (222) and the band unit (220).

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