JPH076189Y2 - Casing tube press-fitting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a casing tube press-fitting device for press-fitting / pulling out a large-diameter steel pipe pile or a casing tube used for foundation work such as construction and civil engineering.

[Conventional technology]

For example, in a casing tube press-fitting device shown in Japanese Utility Model Publication No. 59-89190, a casing tube driving device is provided in a leader installed upright in the front part of a base machine so that the casing tube driving device can be moved up and down.
The casing tube drive device swings or rotates the casing tube while gripping one location of the casing tube, and presses the casing tube into the ground to excavate and remove earth and sand in the casing tube with an earth auger. There is.

[Problems to be solved by the device]

However, in the case of the above structure, one of the casing tubes
Since there is a problem that vertical accuracy is difficult to obtain because the casing tube is gripped to adjust the press-fitting direction of the casing tube, and when excavating and discharging the earth and sand in the casing tube, the earth and sand are scattered around the mouth of the casing tube. Then, it accumulates on the upper part of the casing tube drive device, and it takes time and effort to clean it, and it is easy to cause a failure.

Therefore, an object of the present invention is to provide a casing tube press-fitting device in which vertical accuracy of a casing tube can be easily obtained, and scattering of earth and sand is prevented.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a leader at a front part of a base machine, an auger drive device that can be lifted and lowered along the leader, and a casing tube drive device that is disposed below the auger drive device. A casing tube press-fitting device for excavating and discharging earth and sand in a casing tube press-fitted into the ground by the casing tube drive device with an earth auger driven by the auger drive device, below the auger drive device. A ring frame for suspending a guide frame having a circular opening above the casing tube drive device such that the guide frame can be moved up and down along the leader, and is fitted to the lower part of the guide frame to the upper part of the casing tube. Is rotatably provided via a bearing, and an earth catching receiver is provided on the upper portion of the guide frame. It is characterized by having a earth unloading chute for discharging the earth and sand in front base machine.

[Action]

With this structure, the vertical accuracy of the casing tube can be easily obtained by holding the leader vertically by grasping the casing tube at upper and lower two places, and the earth and sand in the casing tube can be excavated and discharged by the earth auger. At this time, the earth and sand discharged from the mouth of the casing tube are collected in the earth receiving tray and are discharged to the front of the base machine by the earth discharging chute.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of the present invention,
The casing tube press-fitting device 1 extends a front bracket 4 at the front part of the upper swing body 3 of the base machine 2, and vertically installs a leader 5 on the front bracket 4 so that the leader 5 can be undulated and tilted. Support from the back.

Further, the front bracket 4 is provided with a casing tube driving device 8 for press-fitting / withdrawing the casing tube 7, and the casing tube driving device 8 is used while being grounded to the ground.

A top sheave block 9 is provided above the leader 5, and an auger drive device 12 of an earth auger 11 suspended from the top sheave block 9 by a wire 10 is
It can be moved up and down along the leader 5 by being guided by the guide pipe 13.

Also, from the top sheave block 9, earth auger 11
A guide frame 15 having a circular opening 14 in the center is guided by a guide pipe 13 of the leader 5 below the auger drive device 12 above the casing tube drive device 8.
It is suspended by a wire 16 so that it can be moved up and down.

A ring frame 17 fitted to the upper portion of the casing tube 7 is rotatably provided at the lower portion of the guide frame 15 via a bearing 18, and a hopper-shaped discharge is provided at the outer periphery of the upper portion of the guide frame 15. The earth receiving tray 19 is provided, and the earth receiving tray 19 is provided with an earth discharging chute 20 for ejecting earth and sand in front of the base machine 2 so as to be inclined downward toward the front.

With this configuration, the casing tube 7
Since the lower part of each is gripped by the casing tube drive device 8 and the upper part is gripped by the ring frame 17 of the guide frame 15,
By tilting and finely adjusting the leader 5, the vertical accuracy of the casing tube 7 can be easily improved.

In addition, the earth and auger 11
When excavating and excavating with, the earth and sand discharged from the mouth of the casing tube 7 are collected in the earth receiving tray 19, and the earth discharging chute 20
By this, it can be discharged to the front of the base machine 2, and the scattering of earth and sand is prevented.

FIG. 4 and FIG. 5 show a second embodiment of the present invention, in which a sliding table-shaped earth receiving tray 19 which is inclined downward toward the front of the base machine 2 is provided on the upper portion of the guide frame 15. The earth removing receiver 19 is provided with an earth removing chute 20 that continuously inclines to the inclined surface of the earth receiving receiver 19 and has the same operation and effect as those of the first embodiment.

[Effect of device]

As described above, the casing tube press-fitting device of the present invention comprises the leader in the front part of the base machine, the auger driving device suspended up and down along the leader, and the casing tube arranged below the auger driving device. A guide frame having a circular opening is provided below the auger drive unit and above the casing tube drive unit so that the guide frame can be lifted and lowered along the leader from the upper part of the leader, and the casing tube is attached to the lower part of the guide frame. A ring frame that fits in the upper part is rotatably provided via bearings, an earth catcher is provided on the upper part of the guide frame, and an earth discharge chute that discharges earth and sand forward of the base machine is provided in the earth catch receiver. Whether to hold the reader vertically by grasping the tube at the upper and lower two places by the guide frame and the casing tube drive device , Vertical accuracy of the casing tube is easily obtained.

Moreover, since an earth catcher equipped with an earth discharge chute that discharges earth and sand is provided in the upper part of the guide frame in front of the base machine, use compressed air or the like when excavating earth and sand in the casing tube with an earth auger. Instead, collect the earth and sand discharged from the mouth of the casing tube in the earth receiving tray and discharge it to the front of the base machine with the earth discharging chute.
It is possible to effectively prevent the scattering of earth and sand.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention,
FIG. 1 is a front view of a casing tube press-fitting device, FIG. 2 is a sectional front view of essential parts, FIG. 3 is a plan view of the same, and FIGS. 4 and 5 show a second embodiment of the present invention. FIG. 4 is a partial cross-sectional front view of the main part, and FIG. 5 is a plan view of the same. 1 ... Casing tube press-fitting device, 2 ... Base machine, 5 ... Leader, 7 ... Casing tube, 8 ...
Casing tube drive, 11 ... Earth auger, 12
...... Auger drive device, 15 …… Guide frame, 16 …… Wire, 17 …… Ring frame, 18 …… Bearing, 19 …… Soil catcher, 20 …… Soil dump chute

Claims (1)

[Scope of utility model registration request] 1. A base machine comprising a leader, a auger drive unit suspended from the base machine in a vertically movable manner, and a casing tube drive unit disposed below the auger drive unit. In a casing tube press-fitting device for excavating and discharging earth and sand in a casing tube that is press-fitted into the ground by a casing tube drive device with an earth auger driven by the auger drive device, the casing tube drive device is provided below the auger drive device. Above the device, a guide frame having a circular opening is suspended from the upper part of the leader so as to be able to move up and down along the leader, and a ring frame fitted to the upper part of the casing tube is mounted on the lower part of the guide frame via a bearing. It is rotatably provided, and an earth catcher is provided on the upper part of the guide frame. Casing tube press fit apparatus comprising the earth unloading chute for discharging the earth and sand.