JPH0542326U - Connection of the screw anchor pile - Google Patents

Abstract

(57) [Summary] [Purpose] We improved the connection method of screw anchor piles,
Increase the number of times a pile can be diverted. [Structure] The screw anchor of the screw anchor pile and the torque tube and the torque tube are connected to each other with bolts and nuts, and the connecting portion is in the shape of a screw. Position it at the same pitch as the screw blades.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connecting portion of a screw anchor pile.

[0002]

[Prior Art]

 Conventionally, screw anchor piles for steel tower foundations were devised as permanent equipment, and removal was not considered, and screw anchors and torque tubes and torque tube connections were connected by screw connection or welding.

When this screw anchor pile is used for temporary construction, it is necessary to remove it after use, but it is possible to pull out (remove) the screwed pile once by rotating it in the opposite direction to when driving the screw anchor pile. However, if the connection part is constructed by screw connection, the pile will be separated from the connection part by reverse rotation and will remain in the ground.

Further, in the case of welding connection, it is necessary to cut the extracted connection portion by cutting with oxygen, and the cutting shortens the length of the torque tube or the screw anchor, thus limiting the number of times of diversion. In addition, repair of the connection part for diversion is required for each use, and the diversion cost must be estimated in advance when diversion.

[0005]

[Problems to be solved by the device]

 When the connection part of the screw anchor pile is constructed by screw connection, the pile below the connection part is cut off and remains in the ground, and in the case of welding connection, it is necessary to shorten the pile and repair the connection part because it is cut and cut off. There are many problems to be solved in the conventional connection part.

An object of the present invention is to improve the connection portion of a screw anchor pile and increase the number of times the pile can be diverted.

[0007]

[Means for Solving the Problems]

 The above problem is that when connecting the screw anchor of the screw anchor pile and the torque tube and the torque tube to each other, the connection is made with bolts and nuts, and the shape of the connection part is screw-shaped, and the screw of the connection part is screwed. This is achieved by setting the pitch of the blades of the same pitch as the blades of the four screws of the screw anchor, and making all the blades of the screw rotate on the same locus when screwing the screw anchor. it can.

Here, the screw anchor refers to a portion of the pile that is driven in advance.

The gist of the present invention is that the connection portion of the screw anchor pile is connected by bolts and nuts, and the shape of the screw of the connection portion is at the same pitch position as the blades of the four screws of the screw anchor. Especially.

The above-mentioned improvement of the present invention improves the work of removing the screw anchor pile and increases the number of times the pile can be diverted.

[0011]

【Example】

 FIG. 1 shows a perspective view of the screw anchor pile of the present invention. In Fig. 1, the screw anchor pile is configured by connecting a screw anchor (preceding pile) 1 and a torque tube 2.

The method of connecting the screw anchor 1 and the torque tube 2 is as follows. After the screw anchor 1 is driven in advance, the upper portion of the screw anchor 1 and the torque tube 2 are attached to the bolts 5 and nuts 6 by the flanges 3 and 4 with screw blades. Use to connect. The first torque tube and the second torque tube are connected in the same manner.

Further, the bolts and nuts for connection have a shape to be embedded in the flange in consideration of the resistance of the bolts and nuts in the soil when they are screwed.

In FIG. 1, P is the pitch of the blades of the screw anchor 1, and the interval between all the screw blades is an integral multiple of P (P × N).

By providing the blades at the connection portion, it can be expected that the pile also has a role of increasing resistance to the pulling force received by the pile.

[0016]

[Effect of the device]

 The connection part of the present invention facilitates connection between parts such as screw anchors. The number of times the screw anchor pile is diverted increases, and repairs after each use become unnecessary. No welding machine or equipment for fusing oxygen is required. The provision of screw blades has the effect of increasing the resistance to the pulling force that the pile receives.

[Brief description of drawings]

FIG. 1 is a perspective view of a screw anchor pile according to the present invention.

[Explanation of symbols]

 1 Screw anchor (preceding pile) 2 Torque tube (steel pipe) 3 Flange with screw blade (upper) 4 Flange with screw blade (lower) 5 Connection bolt 6 Connection nut 7 Blade pitch (P)

Claims (2)

[Scope of utility model registration request] 1. A connecting portion of a screw anchor pile, characterized in that a screw anchor of a screw anchor pile and a torque tube and a torque tube are connected to each other by a bolt and a nut, and the connecting portion has a screw shape. 2. The pitch position of the blades of the screw at the connection portion of the screw anchor pile is set to the same pitch position as the blades of the four screws of the screw anchor, and all the blades of the screw have the same locus when the screw anchor is screwed in. The connection part of the screw anchor pile, which is characterized by rotating upwards.