JPH02252887A - Foundation forming device - Google Patents

Abstract

PURPOSE:To prevent a top sheave from projecting out of an arm end when not in use while enable the fine position adjustment thereof when in use by providing a normal/reverse rotation steplessly fixing device on a leaderless foundation forming device. CONSTITUTION:In a leaderless foundation forming device, an articulated arm A mounted on a rotary machine base 2 on a crawler 1 is controlled by a microcomputer to vertically lift up/down an auger B on an arm end 7a to dig a vertical hole. In this device, a driving shaft 11 perpendicularly intersecting to the arm erecting/collapsing plane of the articulated arm A is pivotally installed on a bearing portion 10 provided on the body of the arm end 7a and the base portion of the supporting arm 15 of a top sheave 16 is fixed to the driving shaft 11. By operating a normal/reverse rotation steplessly fixing device C provided on the driving shaft 11, the top sheave 16 is revolved up and down on the periphery of the side of an auger machine 20. Thereby, the position of the top sheave 16 can be finely adjusted, while also enabling the top sheave 16 to be housed when not in use.

Description

[Detailed description of the invention] (a) Industrial application Field A multi-joint arm mounted on a rotary machine stand is controlled to vertically lower an auger suspended from the end of the arm to excavate a vertical hole, etc. in the ground. This invention relates to a basic creation device.

2. Description of the Related Art Conventionally, there has been provided a leaderless type foundation making device in which an auger machine is attached to the end of a multi-jointed arm and the auger is vertically lowered under microcomputer control. In this device, the top sheave for suspending the Ti-shaped steel into the hole drilled by the auger has to be attached to the tip of the arm because there is no lever. The tip of this arm is formed to be thin so as not to hit the workpiece on the ground. Therefore, special measures are required to install it, and the top sheave must not protrude from the back of the forward-facing arm tip and hit an adjacent workpiece when not in use. Problems to be Solved by the Invention The present invention , In order to solve the above problem, it is to obtain a leaderless type foundation making device equipped with a top sheave that does not protrude from the end of the arm when not in use and can change the sheave position by fine adjustment when in use. With the goal.

2. Means for Solving the Problems As illustrated in the figure, the present invention includes a multi-joint arm A mounted on a rotary machine stand 2 with a crawler 1, and controls this multi-joint arm with a microcomputer to control the auger B at the arm tip 7a. In a leaderless type foundation making device that vertically raises and lowers a vertical hole to excavate a vertical hole, a bearing provided in the main body of the arm tip 7a pivots a drive shaft 11 perpendicular to the arm undulation surface of a multi-joint arm A at a portion 10. The base of the support arm 15 of the top sheave 16 is fixed to the same drive shaft, and the drive shaft 11 is provided with a forward/reverse stepless fixing device C, and the top sheave 16 is moved up and down around the sides of the auger machine 20. It is a foundation creation device that is made to circulate.

E. Operation As shown in FIG. 5(a), operate the forward/reverse stepless fixing device IC to rotate the ohm devices N12 and 13 to move the top sheave 16 to the lower abdominal side of the fourth arm 6. This position is when the topsive is stored when not in use.

As shown in FIG. 5(b), the ohm device V! l12.13
When the top sheave 16 is suspended inside the auger B by rotating the support arm 15 downward, it can be used for tasks such as suspending the steady rest device 26 (Fig. 1) from the rope 17 and attaching and detaching it. sell. As shown in Figure 5 (C-1),
When the top sheave 16 is turned to the side of the auger machine 20 in the same manner, the H-type fl127 is inserted into the drilling hole by the auger B.
Can be used for hanging. At this time, as a feature of the ohm device, the position of the support arm 15 is fixed steplessly, and the top sheave 1
By slightly changing the position of 6, the positions in the borehole 28 are closer to the rear (C 2), intermediate (C 3), and forward (C 4).
The H-shaped steel 27 can be suspended in the. As shown in FIG. 4(d), when the top sheave 16 is turned to the forward position of the auger machine 20, the H-shaped steel 27 can be suspended into the excavated hole in the same manner. In this position, when the moving block 24 is opened and the bottle 22 for suspending the auger B is inserted into and removed from the shaft hole 23 from above (Fig. 3), the existence of the support arm 15 becomes an obstacle. If the top sheave 16 is turned upward and placed above the auger machine 20, there will be no such hindrance, and the top sheave 16 in this position will be used in the same manner as in the fifth month (Q), Further, when the top sheave 16 is turned rearward from this position, as shown in FIG.
) can be used in the same way.

EXAMPLE An example of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a crawler, which has a rotary machine stand 2 on its upper part, and a multi-joint arm A is pivotally attached to the front part of the rotary machine stand 2 by a transverse pin. The multi-jointed arm A is the first arm 3. from the bottom. 2nd arm 4. It consists of a third arm 5 and a fourth arm 6. Each member 2
Hydraulic cylinders 7.8, 9, and 9a provided appropriately between the arms 3, 3, and 4.4 and 5, and 5 and 6 raise and lower each arm under microcomputer control. The arm tip 7a of the articulated arm A moves up and down vertically. Therefore, the auger B connected to the arm tip 7a vertically moves up and down to excavate a vertical hole in the ground. Reference numeral 26 denotes a steady rest device removably provided on the rotary machine base 2. In FIGS. 2, 3, and 4, reference numeral 11 denotes a drive shaft which is pivoted to a bearing part 10 perpendicular to the arm undulating surface of the multi-jointed arm A. The shaft end of the drive shaft 11 projects toward one side of the arm tip 7a. Reference numeral C denotes a forward/reverse stepless fixing device in which an ohm wheel 12 is fixed to the drive shaft 11, and an ohm 13 connected to a hydraulic motor 14 meshes with the ohm wheel 12. Reference numeral 15 denotes a support arm to which the top sheave 16 is pivotally attached at its tip, and the base of the arm is fixed to the protruding shaft end 11a of the drive shaft 11. 17 is a cable led out from the winding machine 18a, passes through the guide sheave group 21, and hangs on the top sheave 16, and has a hook 1 at the hanging end.
It has 8. 19 is a cover that prevents the cable from coming off. B is an auger, and the upper part of the auger machine 20 is suspended by a bottle 22 from the arm tip 7a. The shaft hole 23 of the bottle 22 is located at the back of the arm tip 7.
It is complemented by a moving block 24 which is cut out to input the 2 and is moved back and forth by a hydraulic cylinder 25. The above-mentioned forward/reverse stepless fixing device can be constructed similarly from a ratchet wheel and a forward/reverse rotation preventing pawl.

Effects of the Invention In the beam-less type foundation making device of the present invention, the bearing provided in the main body of the arm tip 7 pivots the drive shaft 11 perpendicular to the arm undulation surface of the multi-joint arm A to the portion 1o, and the coaxial end is fixed to the base of the support arm 15 of the top sheave 16, and a forward/reverse stepless fixing device C is provided on the shaft 11, so that the top sheave 16 is extended up and down around the sides of the auger machine 20. Therefore, by operating the forward/reverse stepless fixing device MC and turning it to the lower ventral side of the arm tip 7a, the top sheave can be stored in a state where it is not in use, and the support arm 15 can be turned downward and placed inside the auger B. When the top sheave 16 is hung down, the steady rest device 26 can be suspended by the ropes 17 and used for operations such as attaching and detaching the steady rest device 26. Also top sheave 1
6 to the side of the auger machine 20, the top sheave 1 is
By changing the position of 6 little by little, the H-shaped steel can be suspended at the rear, middle, or front of the borehole. Furthermore, by turning the top sheave 16 to the forward position of the auger machine 20, the H-shaped steel can be similarly suspended into the excavation hole. In this case, if the support arm 15 gets in the way when installing and removing the bin 22 from which the auger machine 20 is suspended, turn the support arm 15 upward to position the top sheave 16 above the auger machine 20. , there is no such hindrance, and the top sheave 16 can be used in the same manner as described above even in this upper position and even in the rear position. The feature is that the top sheave fits well and is attached to the top sheave, and it can be fixed at any position by running it up and down on the side of the auger machine, responding to the variety of uses of the top sheave.

[Brief explanation of drawings]

Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is an enlarged side view of the same main part, Fig. 3 is a partially cutaway enlarged side view of the same main part, and Fig. 3 is a side view of the same main part. Top view, Figure 5 (a) (b) CQ 1. c.2. c.3. c.4) and (d) are simplified explanatory diagrams showing how to use the same as above. In the figure A...Multi-joint arm B...Auger C...Forward/reverse stepless fixing device 7a...Arm tip 10...Bearing is part 11...Drive shaft 15...Support arm 16...Top sheave 20... ogre machine

Claims (1)

[Claims] A leaderless type in which a multi-joint arm (A) is mounted on a rotary machine stand (2), and this multi-joint arm is controlled by a microcomputer to vertically raise and lower the auger (B) at the arm tip (7a) to excavate a vertical hole. In this foundation making device, a drive shaft (11) perpendicular to the arm undulation surface of a multi-joint arm (A) is pivotally attached to a bearing part (10) provided in the main body of the arm tip (7a), and the top is attached to the drive shaft. The base of the support arm (15) of the sheave (16) is fixed to the shaft, and a forward/reverse stepless fixing device (C) is attached to the drive shaft (11).
), and the top sheave is placed in an auger machine (20).
A foundation making device that runs up and down around the sides of