JPS6231500Y2 - - Google Patents

Description

[Detailed description of the invention] The invention consists of a rotary cylinder shaft for driving a cylinder for underground piles,
This invention relates to an underground pile cylinder and an earth auger rotation drive device, in which the rotary shafts for driving the earth auger are arranged concentrically or almost concentrically, and the rotary cylinder shaft and a motor for driving the rotary shaft are provided. .

When press-fitting an underground pile cylinder into the ground together with an earth auger inserted concentrically or almost concentrically, the pile cylinder and the earth auger are generally driven to rotate in opposite directions. . Therefore, in the above rotary drive device, a motor for driving the pile cylinder and a motor for driving the earth auger have conventionally been provided separately, making it large and expensive. was.

The present invention is a rotary drive device for the above-mentioned underground pile cylinder and earth auger, which can rotate the pile cylinder and the earth auger in opposite directions, yet can be constructed in a small size and at low cost. For the purpose of this, the rotating cylinder shaft 6 and the rotating shaft 10 are
It is characterized in that the rotary cylinder shaft 6 and the rotary shaft 10 are interlocked and connected to the same motor 15 by a gear type interlocking mechanism that rotates the rotary cylinder shaft 6 and the rotary shaft 10 in opposite directions.

That is, the rotary cylinder shaft 6 for driving the pile cylinder 1 and the rotary shaft 10 for driving the earth auger 2 are interlocked with the motor 15 by a gear type interlocking mechanism that rotates both shafts 6 and 10 in opposite directions. Therefore, although the pile cylinder 1 and the earth auger 2 can be driven in opposite directions, the drive motor 1 of the pile cylinder 1 is
5 and the driving motor 15 of the earth auger 2 can now be used, making the construction more compact and cheaper than before.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, an underground pile cylinder 1 and
The pile cylinder 1 is attached to the head of each earth auger 2 inserted concentrically or almost concentrically into the pile cylinder 1.
and a device 3 that rotates the earth auger 2 in opposite directions, and lowers the rotary drive device 3 to apply pressure to the pile cylinder 1 and the earth auger 2 underground. Configure it like this,
The pile cylinder 1 is driven while the ground auger 2 excavates the vicinity of the tip of the pile cylinder 1.

The rotary drive device 3 for the pile cylinder 1 and the earth auger 2 described above is constructed as shown in FIGS. 2 and 3.

That is, a cylindrical pile holder 23 having an L-shaped engagement groove 5 on the inner surface for inserting and locking the engaged part 4 of the pile cylinder 1 and a coupling ring 24 are integrally connected to the lower end thereof. The cylindrical shaft 6 is rotatably fitted and supported within the cylindrical boss portion 8 of the main body frame 7. In addition, a shaft 10 for driving the earth auger is inserted into the screw shaft of the earth auger 2 and connected by a pin 9.
A rod 12 is connected to the upper end of the rotary shaft 10 and extends through the cylinder 11 which is fitted and supported concentrically or almost concentrically with the rotary cylinder shaft 6 so as to be relatively rotatable. , said frame 7
The piston rod 14a of the hydraulic cylinder 14, which is attached via the cylinder strut 13, is fitted and supported within the piston rod 14a of the hydraulic cylinder 14, so that the rotary shaft 10 is attached to the hydraulic cylinder 1.
4, it is supported in a state where it can be raised and lowered.
Two electric motors 15, 15 are attached to the frame 7, and an output gear 16 attached to the output shaft of each of the motors 15, both output gears 16,
16, and a first transmission gear 17 fitted externally to the rotary cylinder body 11 so as to be freely rotatable therein;
A second transmission gear 18 is interlocked with the first transmission gear 17 via the rotary cylinder 11, and a bracket 19 extending from the frame 7 engages with the second transmission gear 18 and rotates. A freely supported third transmission gear 20, this second
An internal gear 21 is engaged with the transmission gear 20 and is formed integrally with the rotary cylinder shaft 6, and is attached to the rotary cylinder body 11 so as to be integrally rotatable therewith, and can freely rotate and slide integrally with the rotary shaft 10. A gear-type interlocking mechanism consisting of a transmission cylinder 22 spline-engaged with the rotation cylinder shaft 6 and the rotation shaft 10 in mutually opposite directions,
The two motors 15, 15, the rotating cylinder shaft 6 and the rotating shaft 10 are interlocked and connected.

Then, the rotating cylinder shaft 6 is attached to the pile cylinder 1, and the rotating shaft 1 is attached to the pile cylinder 1.
0 are interlocked and connected to the earth auger 2, respectively, and the pile cylinder 1 and the earth auger 2 are driven to rotate in opposite directions by the same motors 15, 15. Furthermore, by making it possible to raise and lower the earth auger 2 with respect to the pile cylinder 1, when adding and extending the earth auger 2, the engaged portion 4
The engagement groove 5 is disengaged from the engagement groove 5, the hydraulic cylinder 14 is activated, and the earth auger 2 is not pulled up in this case, so there is no need to lock the earth auger 2 to the pile. By raising the drive device 3, a space is created between the pile cap and the lower end of the pile holder 23, and the connecting part between the rotating shaft 10 and the earth auger 2 is exposed there, so that the connection between the rotating shaft 10 and the earth auger 2 can be removed. When soil adheres to the inner tip, consideration is given so that the earth auger 2 can be raised and lowered to scrape off the adhered soil.

A fluid pressure motor may be used instead of the electric motor 15.

In addition, a nozzle is provided at the tip of the earth auger 2, and this nozzle can be used to supply water to soften earth and sand, compressed air to increase the capacity of earth and sand discharge, or cement milk to form bulbs or fill inside piles. teeth,
It is preferable that the screw shaft 2a, the rotary shaft 10, and the rod 12 be formed into hollow shafts to form a supply path.

[Brief explanation of the drawing]

The drawings show an embodiment of the underground pile cylinder and the rotary drive device for the earth auger according to the present invention, FIG. 1 is a side view showing the driving state of the pile cylinder, and FIG. The sectional view, FIG. 3, is a side view of the pile holder. 1...Pile cylinder, 2...Earth auger, 6...
Rotating cylinder shaft, 10... Rotating shaft, 15... Motor.

Claims (1)

[Scope of utility model registration request] The rotary cylindrical shaft 6 for driving the underground pile cylinder 1 and the rotary shaft 10 for driving the earth auger 2 are provided concentrically or almost concentrically, and the rotary cylindrical shaft 6 and the rotary shaft 10 are driven. This is a rotary drive device for an underground pile cylinder and an earth auger, which is equipped with a motor 15 for rotating the rotary cylinder shaft 6 and the earth auger. A rotary drive device for an underground pile cylinder and an earth auger, characterized in that they are interlocked and connected by a gear type interlocking mechanism that rotates rotating shafts 10 in opposite directions.