JP3199708U - Tubing body embedding device - Google Patents

Abstract

A tubular body embedding device capable of suppressing the manufacturing cost extremely inexpensively is provided. A rotary drive device 7 is connected to a leader 4 of a pile driving machine so as to be movable up and down. The earth removing device 8 to which the tubular body P is connected, the auger screw 10 connected to the output shaft 17 of the rotary drive device 7 and inserted into the tubular body P through the earth removing device 8, and the tubular body P A tubular body embedding device provided with a vibration generating device 9 for applying vibration in the axial direction to the shaft, and the vibration generating device 9 is positioned between the axis of the rotary drive device 7 and the earth discharging device 8 and the reader 4. As described above, vibration transmission means 15 and 24 are connected to the reader 4 so as to be movable up and down, and transmit vibration generated by the vibration generator 9 to the tubular body P. [Selection] Figure 1

Description

  The present invention relates to a tubular body embedding device, and more specifically, for embedding a tubular body such as a steel pipe pile or a steel pipe sheet pile to the ground by applying vibration to the tubular body while excavating the ground by an intermediate excavation method. Relates to the device.

  As a construction method for installing a tubular body such as a steel pipe pile or a steel pipe sheet pile on the ground, a construction method using a medium excavation method and a vibro hammer construction method is known. This construction method is a construction method in which an auger screw is inserted into the tubular body to excavate the ground below the tubular body, and the tubular body is embedded in the ground by applying vibration to the tubular body by a vibration generator.

  As an apparatus for carrying out this construction method, the applicant has already proposed the ones described in Patent Documents 1 and 2. However, the previously proposed conventional device is one in which a vibration generator is integrally mounted on a soil removal device.

  For this reason, a hole for passing the output shaft of the rotary drive device has to be provided in the vibration generating device, which complicates the entire device and increases the manufacturing cost. In addition, since the conventional device is a dedicated device that can only be applied to the method that uses both the medium excavation method and the vibro hammer method, the vibration generator is separated and used for other methods such as sheet pile driving methods. I could not.

JP 2008-31756 A JP 2013-53495 A

This invention has been made based on the technical background as described above, and achieves the following object.
An object of the present invention is to provide a tubular body embedding device that can keep the manufacturing cost extremely low.

This device adopts the following means in order to achieve the above-mentioned problems.
That is, the present invention is a rotary drive device that is connected to a leader of a pile driving machine so as to be movable up and down, and is connected to the leader so that the axis of rotation is coincident with the rotary drive device, and is embedded in the ground at the lower end. A soil removal device to which the tubular body is connected, an auger screw connected to the output shaft of the rotary drive device and inserted into the tubular body through the soil removal device, and an axial vibration in the tubular body A tubular body embedding device comprising a vibration generating device for providing
The vibration generator is connected to the reader so as to be movable up and down so as to be positioned between the rotation drive device and the axis of the earth removing device and the reader.
A tubular body embedment apparatus comprising vibration transmission means for transmitting vibration generated by the vibration generator to the tubular body.

  The vibration transmitting means is provided in the earth removing device, and includes a slide fitting for connecting the earth removing device to the reader, and a gripping member provided in the vibration generator and for holding the slide fitting. The provided structure can be adopted.

  According to this device, the vibration generator is not mounted integrally with the earth discharging device, but is disposed as a separate body between the rotation drive device and the axis of the earth discharging device and the reader. A general purpose one can be used. Therefore, the manufacturing cost can be kept extremely low.

It is a side view of the pile driving machine which shows embodiment of this invention and contains an embedment apparatus. It is a front view of a vibration generator.

  An embodiment of the invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, a side view of a pile driving machine, and FIG. 2 is a front view of a vibration generator. The pile driving machine includes a base machine 1, and the base machine 1 includes a crawler traveling body 2 and a revolving body 3 provided on the crawler traveling body 2 so as to be able to revolve in a horizontal direction.

  A leader 4 is provided at the front portion of the swing body 3 so as to be able to be tilted up and down, and an intermediate portion of the leader 4 is supported by a stay 5 having a lower end supported at the rear portion of the swing body 3. The leader 4 is provided with a guide rail 6 along its length direction. The burying device according to the present invention includes a rotation drive device 7, a soil removal device 8, and a vibration generator 9.

  The rotation drive device 7 is for rotating the auger screw 10 and has a built-in hydraulic motor. The rotary drive device 7 is connected to the guide rail 6 via an upper and lower two slide fittings 11 provided on the back surface thereof (the surface facing the reader 4 and the same for each device described below). The rotary drive device 7 is suspended by a wire rope 13 wound around a sheave 12 provided at the top and a top sheave (not shown) provided at the top of the reader 4.

  The earth discharging device 8 has a cylindrical shape such as a cylindrical shape, and a discharge port 8a for discharging excavated earth and sand is provided on the front surface (the surface opposite to the reader 4 and the same for each of the following devices). . The earth removal device 8 is connected to the guide rail 6 via a slide fitting 14 provided on the back thereof so as to be movable up and down. The rotary drive device 7 and the soil removal device 8 have their axes coincident with the slide fittings 11 and 14 being attached to the guide rail 6.

  A gripping member 15 for gripping a steel pipe pile P that is a tubular body is provided at the lower end of the earth removal device 8. This gripping member 15 opens and closes by the operation of a hydraulic cylinder (not shown), and grips the cap 16 provided at the upper end of the steel pipe pile P by closing.

  The auger screw 10 is connected to the output shaft 17 of the rotary drive device 7 and is inserted into the steel pipe pile P through the inside of the soil removal device 8. The excavated soil transported by the auger screw 10 is discharged from the discharge port 8a of the soil removal device 8, but a part of the excavated soil attached to the blades of the auger screw 10 rises beyond the soil removal device 8, May scatter around. In order to prevent scattering of the excavated earth and sand, a cylindrical cover 20 that covers the auger screw 10 is attached to the upper end portion of the earth removing device 8.

  The vibration generating device 9 is disposed between the axis of the rotary drive device 7 and the earth discharging device 8 and the reader 4. This vibration generating device 9 is a general-purpose device that can be used for a sheet pile driving method and the like, and is a device that generates vertical vibrations by the rotation of a built-in eccentric weight. A suspension bar 21 is attached to the upper end of the vibration generator 9 as an attachment (see FIG. 2). The vibration generating device 9 is connected to the guide rail 6 via a slide fitting 22 provided on the back surface of the suspension bar 21 so as to be movable up and down.

  Sheaves 23 are provided at both ends of the suspension bar 21, and the vibration generator 9 is a wire rope 24 wound around these sheaves 23 and a top sheave (not shown) provided at the top of the reader 4. It is suspended by. The wire rope 13 for suspending the wire rope 24 and the rotary drive device 7 is directed downward from the top sheave and is connected to a winch (not shown) provided on the revolving structure 3.

  A gripping member 25 is provided at the lower end of the vibration generator 9 (see FIG. 2). The gripping member 25 has a pair of gripping claws 25a and 25a that are opened and closed by an operation of a hydraulic cylinder (not shown). The gripping claws 25a and 25a are closed to grip the slide fitting 14 of the earth removing device 8. The earth removal device 8 and the steel pipe pile P below it are suspended by gripping the slide fitting 14.

  Further, the vibration generated by the vibration generating device 9 is transmitted to the steel pipe pile P as vibration in the axial direction (vertical direction) through the gripping member 25, the slide fitting 14 and the earth removing device 8. That is, the gripping member 25 and the slide fitting 14 constitute a vibration transmitting means for transmitting the vibration of the vibration generating device 9 to the steel pipe pile P.

  A narrowing sheave 26 (not shown in FIG. 1 to avoid complication of the drawing) is provided on both side surfaces of the vibration generator 9. The wire rope 27 wound around the sheave 26 is directed downward, and the direction of the wire rope 27 is changed via a sheave 28 provided at the front portion of the swivel body 3 and connected to a winch (not shown). By pulling the wire rope 27 downward, a downward force is applied to the vibration generator 9, and this force is transmitted to the steel pipe pile P as a pressure input to the ground via the slide fitting 14 and the earth removing device 8. The narrowing sheave 26 may be provided on the slide fitting 14.

  In embedment construction of the steel pipe pile P, while rotating the auger screw 10 by operating the rotation driving device 7, the rotation driving device 7 is lowered along the guide rail 6 by its own weight by feeding the wire rope 13. Moreover, the vibration generator 9 is lowered by its own weight by feeding the wire rope 24 while operating the vibration generator 9 to apply vibration to the steel pipe pile P. Furthermore, a downward force is applied to the vibration generator 9 by pulling the wire rope 27.

  Through the above operation, the auger screw 10 excavates the ground in advance, and the steel pipe pile P is buried in the ground accordingly. Moreover, since the vibration generator 9 gives the vibration of an axial direction to the steel pipe pile P, the steel pipe pile P is efficiently embed | buried under the ground. Furthermore, since a downward force is applied to the vibration generator 9, pressure input to the ground is transmitted to the steel pipe pile P in addition to its own weight. Thereby, the vibration of the vibration generator 9 is transmitted to the steel pipe pile P without causing a loss, and the extra vibration is reduced, so that the generation of noise due to the vibration can be reduced.

  According to the burying apparatus as described above, the vibration generating device 9 is not integrally mounted on the soil removal device 8, but is separately provided between the axis of the rotary drive device 7 and the soil removal device 8 and the reader 4. Since it is arranged, a general-purpose device can be used as the vibration generator 9. Therefore, the manufacturing cost can be kept extremely low. Further, since the vibration generating device 9 is a general-purpose device, it can be removed and used for a sheet pile driving method or the like.

  The above embodiment is merely an example, and the present invention can take various aspects. For example, in the above-described embodiment, the slide metal fitting 14 is provided in the earth removal device 8, and the vibration generated by the vibration generating device 9 is transmitted to the steel pipe pile P by holding the slide metal fitting 14 by the holding member 25 of the vibration generating device 9. I tried to do it. Not limited to this, a slide fitting is detachably provided at the upper end of the steel pipe pile, and the steel pipe pile is connected to the reader through the slide fitting, so that the gripping member of the vibration exciter holds the slide fitting. Also good.

  In the said embodiment, although the steel pipe pile is shown as a tubular body, this invention apparatus is applicable also when embedding a steel pipe sheet pile.

4: Leader 6: Guide rail 7: Rotation drive device 8: Earth removal device 9: Vibration generator 10: Auger screw 11: Slide fitting 12: Sheave 13: Wire rope 14: Slide fitting 15: Holding member 17: Output shaft 21 : Suspension bar 22: Slide fitting 23: Sheave 24: Wire rope 25: Holding member

Claims (2)

A rotary drive device connected to the leader of the pile driving machine so as to be able to move up and down, and connected to the reader so that it can move up and down so that its axis coincides with the rotary drive device, and a tubular body to be embedded in the ground is connected to the lower end portion. A soil removal device, an auger screw connected to the output shaft of the rotary drive device and inserted into the tubular body through the soil removal device, and an excitation for applying axial vibration to the tubular body A tubular body embedding device comprising a device,
The vibration generator is connected to the reader so as to be movable up and down so as to be positioned between the rotation drive device and the axis of the earth removing device and the reader.
A tubular body embedding device comprising vibration transmission means for transmitting vibration generated by the vibration generating device to the tubular body.   The vibration transmitting means is provided in the earth removing device, and includes a slide fitting for connecting the earth removing device to the reader, and a gripping member provided in the vibration generator and for holding the slide fitting. The tubular body embedding device according to claim 1, comprising:

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