JPH068433U - Pile connecting device - Google Patents

Abstract

(57) [Abstract] [Purpose] The inner ring with the outer taper is divided into two parts, and the outer ring with the inner taper that fits on the outer taper is relatively moved in the pile axial direction to fit both tapers. Pile joint structures of the type in which the piles are joined together to connect the piles have already been proposed. (EN) Provided is a device capable of surely and easily forming such a pile joint portion without causing partial tightening. [Structure] A frame 2 having fixed claws 3 fixed to an inner ring 50, and a jack 20 attached to the frame 2.
And a movable claw 10 that is attached to the ram of the jack 20 and that is locked to the outer ring 60 and moves toward the fixed claw 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pile connecting device for connecting piles by tapering on site.

[0002]

[Prior art]

 Pile such as concrete pile, steel pipe pile, concrete steel pipe composite pile, etc. penetrates into the ground until it reaches the support layer of the ground, but if one pile does not reach the support layer, it is necessary to connect the upper and lower piles. Occurs. In such pile connection, the upper and lower pile ends are generally connected by welding. Welding at the pile construction site tends to be delayed due to weather and other factors, and the welding joint is not reliable in hitting piles and the work difficulty is increasing due to a shortage of welding technicians. It was

In order to deal with such a situation, the present applicants have proposed a novel pile connecting method (Actual Kaihei 3-83224). The content is that one or several annular grooves are provided on the circumference of the outer diameter near the end of each pile to be connected, and the inner diameter has annular projections that fit into these annular grooves. A semi-circular two-part cylindrical inner ring with a taper is fitted onto the outer ring, and a cylindrical outer ring with an inner diameter taper matching the outer taper of the inner ring is fitted on the inner ring. It is a pile joint structure that is fitted to the outer diameter of the pile and connects the pile by tightening the inner ring with a taper. This connection structure has high strength and rigidity at the connection part, is easy to work with, is not subject to weather conditions, and has no elements that depend on the skill of the builder, so it is an award-winning joint with high reliability. Has been done.

By the way, the connection of the piles is adapted to move the taper rings in the axial direction relative to each other. For this reason, when connecting the piles on site, it is necessary to move the ring in the axial direction of the pile with a hammer or the like. However, the connection part is standing vertically, the space between it and the ground is narrow, and it is necessary to move it upward, which makes it difficult to swing the hammer and tightens it partly. Therefore, there has been a demand for the development of a device that fully exerts the original excellent functions of such a pile.

[0005]

[Problems to be solved by the device]

 It is an object of the present invention to solve the above problems, and to provide a device capable of easily connecting piles in the field and easily forming a highly reliable joint without causing partial tightening.

[0006]

[Means for Solving the Problems]

 The present invention relates to a pile connection in which a split inner ring having an outer taper and an outer ring having an inner taper which is fitted to the outer taper are relatively moved in the pile axial direction to fit both tapers. In the device, a frame having fixed claws fixed to the inner ring, a jack mounted to the frame, and a ram of the jack fixed to the outer ring and fixed in the direction of the fixed claws. A pile connecting device comprising a moving claw that moves.

[0007]

[Action]

 The device of the present invention locks the fixed claw to the inner ring and jacks up the outer ring. By using multiple units of this device, the outer ring is moved uniformly in the pile axial direction by hydraulic pressure or the like, so that the taper can be normally fitted, and the piles can be connected quickly, easily and reliably.

[0008]

【Example】

 1 to 3 show an embodiment of the present invention. 1 is a front view of the embodiment, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof. In the pile connecting device 1 of the embodiment, a fixing claw 3 is fixed to one end of a frame 2 composed of two elongated plates, and a jack 20 is fixed to the other end of the frame 2. The fixed claw 3 is attached by a bolt 4, and the body 8 of the jack is attached by a bolt 9. The fixed claw 3 is provided with an engagement protrusion 5 that engages with the upper end 6 of the inner ring. The moving claw 10 is attached to the ram of the jack 20 by using a fixed nut 12. When pressure oil is supplied to the jack 20 via the hose 21 by a hand-operated hydraulic pump or the like, the moving claw 10 moves toward the fixed claw 3.

FIG. 1 shows a state where the lower end portion of the upper pile 31 and the upper end portion of the lower pile 41 are completely joined. The piles 31 and 41 in FIG. 1 show only the end metal parts excluding concrete. The upper pile 31 has a lower end formed by attaching cylindrical steel plates 34, 33 to the end plate 32. The lower pile 41 has upper end portions formed by attaching cylindrical steel plates 44 and 43 to an end plate 42. The outer ring 60 is fitted to the lower pile 41 in advance, the end plate 32 of the upper pile 31 is put on the end plate 42 of the lower pile 41, and the end plates 32 and 42 are divided into two parts. The outer ring 50 is fitted onto the outer ring, and the end plates 32 and 42 are fitted into the recesses on the inner surface of the inner ring 50. Then, the outer ring 60 is raised to fit the outer ring 60 onto the outer surface of the inner ring 50. As shown in FIG. 3, three pile connecting devices 1 of the embodiment are arranged on the circumference of the pile 31, and as shown in FIG. 1, the engaging projections 5 of the fixing claws 3 are arranged on the upper end 6 of the inner ring 50. , The moving claw 10 of the jack is locked to the lower end of the outer ring 60, pressure oil is supplied to the jack 20 to push the outer ring upward, and the inner ring 50 and the outer ring 60 are strongly tapered. A tight fit allows the piles 31 and 41 to be fully joined.

FIG. 4 shows an example in which the shapes of the fixed claw 3 and the movable claw 10 of the apparatus shown in FIG. 1 are changed, and the same reference numerals as those in FIG. 1 are attached to respective parts. In FIG. 4, the fixed claw 3 is provided with a relief 3a, and the movable claw 10 is provided with a relief 10a. When the inner ring 50 and the outer ring 60 are relatively moved in the pile axial direction and tightened up when the inner ring 50 and the outer ring 60 are largely moved relative to each other, the escapes 3a and 10a have the other upper and lower ends fixed with claws. 3 and the moving claw 10 are prevented from hitting. This allows the piles to be tightly connected, even if there are many dimensional variations at the pile ends.

[0011]

[Effect of device]

 Since the pile connecting device of the present invention is configured as described above, the split inner ring having the outer taper and the outer ring having the inner taper fitted on the outer taper are arranged in the pile axial direction. Pile connection of the type in which both tapers are fitted by moving relative to each other can be performed quickly, easily, and reliably in the field.

According to this device, a highly reliable joint can be easily formed without causing one-side tightening or the like, which greatly contributes.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention and is an explanatory view showing a relationship with a pile.

FIG. 2 is a side view of an embodiment of the present invention.

FIG. 3 is a plan view of an embodiment of the present invention and is an explanatory view showing a relationship with a pile.

FIG. 4 is a front view of another embodiment of the present invention.

[Explanation of symbols]

 1 Pile connection device 2 Frame 3 Fixed claw 4 Bolt 5 Engagement protrusion 6 Upper end 8 Main body 9 Bolt 10 Moving claw 12 Nut 20 Jack 21 Hose 31 Pile 32 End plate 33, 34 Steel plate 41 Pile 42 End plate 43, 44 Steel plate 50 Ring 60 outer ring

Claims (1)

[Scope of utility model registration request] 1. A pile connection in which a split inner ring having an outer taper and an outer ring having an inner taper fitted to the outer taper are relatively moved in the pile axial direction to fit both tapers. A device, which is a frame having fixed claws fixed to the inner ring, a jack attached to the frame, and a movement attached to a ram of the jack and locked to the outer ring to move toward the fixed claws. A pile connecting device comprising a claw.