JPS6363819A - Penetrator for shape steel by biaxial auger - Google Patents

Abstract

PURPOSE:To bury a shape steel at the same time as excavation is made by a biaxial auger by a method in which a shape steel is interposed between two augers and excavation is made by an expanded blade on the lower end of the augers. CONSTITUTION:A frame 5 is attached in a vertically movable manner along a guider provided to the leader of a pile driver 1 provided with a winch to vertically move the frame 5 through a rope and a winch to hang down a shape steel 33 through a rope. Two auger drivers 6 and 7 are set on the frame 5 in a mutually approaching or separating manner by a closing gear, each of which is attached with augers 24 and 25 whose lower ends are provided with expanded blades 46 and 47 of different heights. A chuck 27 to hold the steel 33 is also provided for the lower part of the frame 5. The shape steel can thus be buried at the same time as excavation is made by the augers 24 and 25.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for burying shaped steel such as H-shaped steel underground using a two-shaft auger.

(Prior art) When burying a U-shaped sheet pile underground using a pile driver, an l-axis screw auger (hereinafter referred to as an auger) is used, for example, as shown in Japanese Patent Publication No. 54-3522. By excavating a vertical hole and hooking a locking pawl provided on a casing fitted onto the auger onto a pawl receiver provided on the inner surface of the sheet pile, the sheet pile is buried simultaneously with excavation by the auger. This construction method has been praised for its noise-free and vibration-free construction, but if you try to apply this method to burying H5 steel, there will be too much burying resistance, so when burying H-type steel, for example, As shown in Japanese Patent Publication No. 53-35163, after a vertical hole is excavated with an auger, an H-shaped steel is generally installed in the vertical hole. However, this method has the problem that it takes time to bury the shaped steel. Therefore, it would be preferable in terms of work efficiency if the H-shaped steel could be buried at the same time as the excavation with an auger, similar to the case with the H-shaped steel sheet piles.

As a known construction method for burying H5m by following an auger, there is a construction method shown in Japanese Patent Publication No. 53-25162. This construction method involves attaching a circular support frame to the front of the league so that it can be raised and lowered by a hydraulic cylinder. Raise the auger and
An H-shaped steel is gripped by a cylinder or the like and set vertically in a circular support frame so as to be placed below the auger, and by lowering the auger drive device along with the auger along the leader, it is placed inside the support frame. An auger is inserted into the guide tube provided to sandwich the H-shaped steel, the auger performs preliminary excavation, and the H-shaped steel follows this and is pushed in (that is, the support frame is lowered together with the H-shaped steel by a hydraulic cylinder, etc.)
This is a method of burying it.

However, according to this known construction method, the auger must be pulled up, the H-shaped steel is mowed into the support frame below it, and then the auger must be lowered and inserted into the guide tube inside the support frame to perform the work. Therefore, there is a problem that the work cannot be carried out unless a league of approximately twice the size of the auger is provided, and only short H-shaped steel can be buried. Further, since the embedding resistance is large, there is a problem that the ramie cannot be buried without using a shape steel pushing device such as the hydraulic cylinder described above.

(Intermediate point that Hatsushi is trying to solve) In view of the above points, the present invention is capable of excavating with an auger and burying H-shaped steel, etc., and in addition, it is possible to bury long H-shaped steel and other shaped steel with a small pile driver. It is an object of the present invention to provide a press-in device for H-shaped steel that enables embedding, and also enables embedding of H-shaped steel without necessarily having a pushing device.

(Means for Solving the Problem) In order to achieve this object, in the present invention, a frame is attached to the pile driver so as to be movable up and down along a guide member provided in the league of the pile driver, and the frame is attached to the pile driver. A winch for raising and lowering the molded steel through the lobes, and a winch for suspending the shaped steel through the lobes, two auger drive devices are installed on the frame so that they are brought close to and separated from each other by an opening/closing device, and each drive device The system is characterized in that an auger is attached to each auger, expansion wings are attached at different heights to the lower end of each auger, and a chuck device for gripping the shaped steel is provided on the lower side of the frame. By opening, O is in between IC! ! This is a state in which the augers are placed close to each other by lifting the augers, etc. - Since the augers can be pushed in together with the augers, it is possible to bury long H-beams, etc., which are equivalent to the length of one auger. Due to its large magnification, it is possible to excavate a wider area than an auger, so it is possible to bury H-shaped steel even if a pushing device is not necessarily provided.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are general views of an embodiment of the present invention, and a leader 3 installed upright at the front of the main body 2 of the pile driver 1 includes:
A guide member 4 such as a pipe is provided. Reference numeral 5 designates a frame on which two auger drive devices 6 and 7 are installed, and left and right sliding members 8 attached to the top and bottom of the back surface of the frame 5 are engaged so as to hold the guide/guide member 4. By this,
The frame 5 is movable up and down along the guide member 4, and a winch 12 is installed thereon. The lobes 13 wound around the drum of the winch 12 are hung on the sheave 14 of the leader 3, and are connected to the sheave blow 2 girder 15 and the frame. The hook is rotated between the sheave block 16 attached to the upper part of the frame 5, and the frame 5 is raised and lowered by the operation of the winch 12.

As shown in FIG. 3, the auger drive devices 6 and 7 installed on the frame 5 each consist of a hydraulic motor and a speed reducer. Fixed to the other drive unit! A hydraulic cylinder 11 17 is attached to a movable frame 10 that is rotatably attached to the frame 5 around the bin 9, and is attached between a part of the movable frame 10 and the frame 5.
The drive device 7 is rotated about the pin 9 by an opening/closing device such as the above, and thereby the wA shift device 7 is moved toward or away from the fixed drive device 6. As shown in FIG. 4, as a mechanism for bringing the drive devices 6 and 7 closer to each other and moving them apart, one of the drive folds 7 is connected to a hydraulic cylinder 17.
．． 18~ may be moved linearly, and not only one drive device 7 but both drive devices 6
By moving both the angles 7 and 7, it is possible to move the two closer together or move them further apart.

As shown in FIGS. 5 and 6, the output shaft 20.21 of each drive 6.7 has, for example, a flange connection 22.23.
The augers 24 and 25 are attached to each of them. Further, a frame 26 is provided on the lower surface of the frame 5 for attaching a chuck device, and a chuck device 27 is attached to the frame 26 so as to be adjustable vertically and downwardly. That is,
The char 2 removal device 27 has a pair of gripping tools 30 and 31 mounted in a box-shaped frame 28 with an opening on the bottom so as to be opened and closed by a hydraulic cylinder 32 around a shaft 29, and a molded steel on the lower side of the gripping tool. (The illustrated example is H-shaped steel) 33 gripping part 34.3
5 protrudes downward from the box-shaped frame 28, and the mountings formed on the box-shaped frame 28 have edges 36, and the numerous mountings arranged vertically at equal intervals on the frame 26 have holes 3.
By fixing with bolts 38 and nuts 39 using any one of Zt.
7 is configured to be adjustable in height, so that when using augers 24 and 25 of a certain length, the shape steel 33
The height of the chuck device 27 can be selected according to the length of the chuck device 27.

40 is a rope for hoisting the shaped steel 33;
0 is wound around the winch 43 on the main body 2 shown in FIG.
The frame 5 is suspended from the sheave 44 at the top of the leader 3.
It passes through the opening 45 and is connected to the shaped steel 33 via two hooks 42 and a hanging ring 41.

As shown in FIG. 1, at the lower end of each auger 24, 25,
Enlargement: A46 and 47 are installed at different heights so that they do not interfere with each other. These expansions i46.47
As shown in Fig. 7, the EH 11 has two wings 4B attached to it so that they can be opened and closed using a bin 49. When the lower end of the EH 11 comes into contact with the excavated ground, it opens as shown in Fig. 7a, allowing excavation of a wide area. When the blades 48 are not in contact with each other, the blades 48 are in a closed state due to their own weight as shown by the solid line.

As shown in FIG. 7, enlargement H46 of auger 24.25,
The following auger steadying mechanism is provided above the part where 47 is attached. That is, flanges 53 and 54 are provided at intervals vertically around the shaft 50, and the flanges 53 and 54 are
．． By not providing the screw blade 51 between the hooks 54, the hook forms a hook attachment portion 52, and the hook attaches the hook attachment portion 52 and the half-split cylinder bodies 55 and 56 to form the port 5.
7 and a cylindrical body integrated by the flange 58 are rotatably fitted, and one half-split cylinder 56 is provided at a part of the corner between the web 60 of the shaped steel 33 and the flange 61. The hook that is hung on either of the claw receivers 62 and 63 is fixed to the claw 641. A wear-resistant material may be interposed between the cylindrical body 55, 56 and the hook attachment portion 52.

In FIG. 1, reference numeral 65 is a hydraulic hammer provided as necessary, and is raised and lowered by a winch (not shown) along a guide member 66 provided on the leader 3.

In this case, first, as shown in FIG. 8(A), by contracting the hydraulic cylinder 11 shown in FIG.
Then, the output shaft 21 and the auger 25 attached thereto are separated from the auger 24 etc. as shown by the arrow e, and then the hook 42 of the rope 4o is attached to the hanging ring 41 attached to the shaped steel 33 placed on the ground. is applied, the winch 43 is operated to pull up the steel mold 33, and the steel mold 33 is changed from the slightly slanted position shown by the two-dot chain line in FIG. The web 60 is fitted into the chuck device 27 which is in the open state, the hydraulic cylinder 32 of the chuck device 27 is extended to chuck the shaped steel 33, and then the hydraulic cylinder 11 is moved as shown by the arrow f in FIG. 8(C). By extending the auger 25, the auger 25 is positioned between the web 60 of the type steel 33 and the flange 61, and then the winch 12 is operated to slightly lower the frame 5, that is, the auger 24.25, as shown in FIG. As shown in D), each auger 2A 9 q Hatakeko ζ Kyou Ijiri b Bibetsu 4 Hiroshi ↑ Kokoro tl + Small
C4--The winch 43, which is hung on the claw receivers 62 and 63 respectively, and then the rope 40 is wound around it, is made freely rotatable, the winch 12 is operated in the downward direction of the frame 5, and the expandable type 46 lands on the ground. After expanding the wings, the winch 12 with the rope 13 wound thereon is made freely rotatable, the expansion type 46, 47 excavates, and the excavated soil is pushed to the ground by the blades 51, while the chuck device 2227 grips the molded steel 33. , the mold steel 33 is buried at the same time as the excavation.In this case, the hook 64 is engaged with the mold steel claw receivers 62 and 63, so even if the length of the mold vA33 is long, the auger 24
A deflection of 25 degrees is prevented.

FIGS. 9 and 10 show the relationship between the steel molds to be buried according to the present invention and the augers 24, 25, and the distance between the flanges 61 of the ninth or mold steel 33 is slightly larger than the diameter of the augers 24, 25. In this case, the entire shape steel 33 is expanded 7as, 4
7, the burial resistance is minimized. In the case of Fig. 10, the flange 6 of the steel plate 33 is attached to the portion tangent to the excavation circle of the enlarged type 46, 4''7.
1 is buried, and if the value of the river 3 becomes larger than this, the burying resistance increases.

When carrying out the present invention, a wider area than the augers 24 and 25 is excavated with enlargement = 4s and a7, and almost the entire surface of the shaped steel or an area close to it is excavated, so the burying resistance when burying the shaped steel is small. Basically, a pushing device is not required, but in order to increase the embedding speed, a pushing winch 68 is provided on the main body 2, as shown by the two-dot chain line in FIG. The sheave 70 attached to a leader or the like may be turned and connected to the frame or the like 5, and the rope 70 may be wound up by the winch 68 to push the shaped steel 33.

The present invention also provides an auger 24.2 as shown in FIG.
5 is surrounded by a casing 71. In this case, the hook is formed with a claw 64 on the casing 71 and hooked onto the claw receiver 62, 63 of the shaped steel 33.
It is possible to prevent the gap from increasing on the lower end side between the 0 and 24 and 25. Furthermore, fresh concrete or the like may be injected from the lower end of the auger. Furthermore, the shaped steel to be buried according to the present invention is not limited to H-shaped steel, but also T-shaped, U-shaped, L-shaped steel, etc.
The shaped steel of any type can be buried with the web interposed between the augers.

(Effects of the Invention) As described above, in the present invention, the shaped steel is interposed between the two augers, and excavation is performed by expanding the lower end of the auger, so the burying resistance when burying the shaped steel is small. , it is possible to bury the shaped steel at the same time as excavating with an auger, and therefore the burying of the shaped steel can be performed with good drainage efficiency, similar to sheet piles. In addition, in the present invention, the steel molds are set with the spacing between the augers open, and the excavation and burying are performed with the spaces between the augers closed, so that it is possible to bury the mold steel that extends to the length of the hoop league. It becomes possible to bury a long 5E with a small machine. Furthermore, according to the present invention, since the embedding resistance of the shaped steel is small, the embedding of the shaped steel does not necessarily require a pushing device.

[Brief explanation of the drawing]

FIG. 1 is an overall front view showing an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an enlarged sectional view taken along line AA of FIG. 1.
4 is a diagram showing a modification of FIG. 3, FIG. 5 is a partially sectional front view showing the chuck device of the embodiment, FIG. 6 is a sectional view taken along line BB in FIG. 5, and FIG. An exploded perspective view showing the steady rest mechanism of the auger in this example, FIGS. 8(A) to 8(D) are schematic bottom views showing the working order for setting steel shapes in this example, and FIGS. 9 and 10. 11 is a plan view showing the relationship between the auger and the shaped steel in this embodiment, and FIG. 11 is a perspective view showing an auger steady rest when a casing is used in the present invention. Patent applicant Nakamura Kogyo Co., Ltd. and one other agent Patent attorney Masami Akimoto and one other person Figure 8 b6 Figure 11

Claims (1)

[Claims] A frame is attached to the pile driver so that it can be raised and lowered along a guide member provided on the leader of the pile driver, and the pile driver is equipped with a winch that raises and lowers the frame via a rope, and a winch that suspends the shaped steel via the rope, Two auger drive devices are installed on the frame so as to be moved close to and separated from each other by an opening/closing device, an auger is attached to each drive device, and expansion wings are attached at different heights to the lower end of each auger, and the above-mentioned frame A press-in device for molded steel using a two-axis auger, characterized in that a chuck device for gripping the molded steel is provided on the lower side of the machine.