JP3479700B2 - Casing auger device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing auger device used for removing obstacles such as concrete layers in the ground.

[0002]

2. Description of the Related Art If obstacles such as concrete foundations of old buildings remain in the ground, it is not possible to construct a continuous underground wall directly. However, the casing auger device used for this removal work was not relatively small and had good excavation efficiency.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to obtain a compact and powerful casing auger device capable of efficiently removing underground obstructions by freely selecting excavation by the weight of a casing auger and forced excavation. To aim.

[0004]

According to a first aspect of the present invention, an upper elevator A, an intermediate elevator B, and a lower elevator C are independently slidable on a parallel guide rod 2 fixed to a leader mast 1. The upper end of the casing auger E is attached to the bearing cylinder portion H provided in the main body of the casing auger drive device D mounted on the lower elevator C by connecting the intermediate elevator B and the lower elevator C to each other by the forcible expansion / contraction means S. While supporting the shaft cylinder part 4 of
The coaxial cylinder portion 4 and the motor portion 2 of the casing auger drive device D
1 is connected by power transmission, and the upper lift A is suspended and supported by the main rope 6 extended from the top sheave 5.
The center shaft auger drive device 7 mounted on the center shaft auger 8 is connected, the auger shaft 9 of the center shaft auger 8 is inserted into the shaft cylinder portion 4 of the casing auger E, and the excavating blade 10 is positioned in the casing auger E. Whether one of the intermediate lift B and the lower lift C cannot be selectively moved with respect to the parallel guide bar 2,
Alternatively, the casing auger device is provided with a locking means G capable of sliding both of them with respect to the parallel guide rod 2.

According to the second aspect of the present invention, the forced expansion / contraction means S is composed of the hydraulic cylinder 11 connecting the intermediate lift base B and the lower lift base C to each other, and the hydraulic cylinder has a minimum contracted position and a maximum expanded position. A lock pin P and a lock pin P1 that operate are provided on the intermediate lift table B and the lower lift table C, respectively, and the pin hole 1 into which the lock pin is fitted on the parallel guide rod 2 side.
The casing auger device according to claim 1, further comprising locking means G including groups 3, 3 ,.

According to the third aspect of the present invention, the center shaft auger 8 is connected to the center shaft auger drive device 7 capable of forward and reverse rotation, and the auger shaft 9 of the center shaft auger 8 is chucked to the shaft cylinder portion 4 at the upper end of the casing auger E. A chucking device F for controlling is provided.
It is the described casing auger device.

[0007]

The operation of the structure of claim 1 will be described with reference to FIG. The hydraulic cylinder 11, which is the compulsory expansion / contraction means S that connects the intermediate lifting platform B and the lower lifting platform C, is contracted, and either the intermediate lifting platform B or the lower lifting platform C is selectively moved with respect to the parallel guide bar 2. All of the locking means G, which cannot be locked or which can be slid with respect to the parallel guide bar 2, are turned off, the casing auger E is landed, and the top sheave 5
The upper lifting table A is suspended by the main ropes 6 fed from the upper rope A, and the excavating blade 10 of the center shaft auger 8 is placed above the lower end of the casing auger E. And the drilling blade 10 of the central shaft auger 8
When the casing auger E is rotated in the opposite direction to each other, the casing bit 14 cuts out the obstacle layer by its own weight, the excavating blade 10 of the center shaft auger excavates the inner portion into a fragment, and the earth removal screw 9b raises the fragment. Push up.

According to the second aspect of the invention, the forced expansion / contraction means S is used.
The pin holes 13 are formed inside the parallel guide rods 2 at positions corresponding to the positions where the hydraulic cylinder 11 of FIG.
There is a group, and either the lock pin P or P1 which is operated by the hydraulic cylinders provided on the intermediate lift B and the lower lift C is selectively inserted into the pin hole 13 so that both pins can be removed at the same time. By using the locking means G, forced excavation can be performed when the obstacle layer is strong and it is difficult to excavate only by the weight of the casing auger E.

In FIG. 5, the operation order of the intermediate lift B and the lower lift C is laterally expanded from left to right for easy understanding of the description of the forced excavation. First, the lock pin P of the intermediate lift B is fitted into the pin hole h1 (13) and locked (#
1), it is assumed that the lock pin P1 of the lower lift C has escaped from the h2 (13) (# 2). In this state, the hydraulic cylinder 11 is gradually extended (# 3), and axial pressure is applied to the rotating casing auger E to forcibly excavate. Then, when the hydraulic cylinder 11 becomes the longest, the lock pin P1 of the lower lift C is fitted into the pin hole h3 (13) (#
4), the lock pin P of the intermediate lift B is removed from the pin hole h1 (# 5), and the hydraulic cylinder 11 is reduced to the minimum (#).
6) Do. If necessary, insert the lock pin P of the intermediate lift B into the pin hole h2, and lock the lock pin P of the lower lift C.
Escape 1 from h3 and perform forced excavation similar to the above. In this forced excavation, the central auger 8 excavates the casing auger by its own weight. The operation of forced excavation by the lock means G is similar to the operation of the wormworm. The locking means G may be a stepless one that can lock the lifting table at any position of the parallel guide bar 2.

According to the structure of claim 3, when the output torque of the casing auger E is insufficient, the excavating blade 10 of the center shaft auger 8 is placed at a high position and the chuck device F is turned on to turn on the auger shaft 9 and the casing auger E. When the shaft cylinder portion 4 is integrated, the center shaft auger 8 is rotated in the same rotation direction and the same number of revolutions as the casing auger E, and the output torques of both augers are combined, the casing auger can be more strongly excavated. Further, when the excavating blade 10 of the center shaft auger 8 is placed at a position lower than the casing tip 14 and the chuck device is turned on in the same manner as described above, and the output torques of both augers are combined in the same manner as described above, the center shaft auger causes the residue in the casing auger to remain. It can excavate the obstacle layer strongly. At this time, if the forced excavation by the lock means G having the structure of claim 2 is used together, the forced excavation using all the driving force becomes possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2, 1 is a leader mast,
A rear surface is pivotally supported by an arm 27 which is supported by a swing cylinder 25 on a crawler 24 so as to be able to rise and fall by a boom cylinder 26, and a catch fork 28 adjusts the foot position to stand upright. Reference numeral 2 denotes a parallel guide rod provided on the front surface of the leader mast with a wide space between the rods.
An upper lift table A, an intermediate lift table B, and a lower lift table C are independently fitted slidably in the guide rod direction by the respective holding arms 3, 3a, 3b.

Reference numeral S denotes a forced expansion / contraction means for separating or pulling the intermediate lift table B and the lower lift table C from each other. The intermediate lift table B is pivotally supported by the horizontal pin 11a at the middle of the cylinder portion, and is attached to the lower lift table C. , A hydraulic cylinder 11 whose rod end is supported by a pin 11b. Locking means G for fixing the intermediate lift B and the lower lift C to the parallel guide bar 2 is configured as follows. Corresponding to a position where the hydraulic cylinder 11 is contracted to the minimum and a position where the hydraulic cylinder 11 is expanded to the maximum, there are pin holes 13 inside the parallel guide rod 2. As shown in FIG. Is provided with a lock pin P projecting to both sides and fitted into the pin hole 13, and the lower lift base C is projecting to both sides by the hydraulic cylinder 13b and fitted into another pin hole 13.
Is provided. Either one of the lock pins P and P1 is selectively fitted into the pin hole 13 and both pins can be removed at the same time. Selective fitting of the lock pins P and P1 into the pin hole 13 is performed by fitting the lock pin to be fitted into the target pin hole and then allowing another lock pin to escape from the pin hole with a certain time lag. , Controlled by a hydraulic sequence circuit. As a general rule, the lock pins can be simultaneously ejected when the lower end of the casing auger E is landed or when the upper elevator A and the intermediate elevator B are connected and the upper elevator A is moved up and down by the main rope 6.

As shown in FIG. 3, the shaft cylinder portion 4 provided at the upper end of the casing auger E is provided at the center of the main body 12 of the casing auger driving device D fixedly mounted on the lower lift C so as to be vertically removed. The gear 23, which is axially supported by the bearing tubular portion H and comes out upward, and which is provided on the coaxial tubular portion 4, meshes with the driving gear 22 of the motor portion 21 of the casing auger drive device D, and the rotation of the motor portion 21 is caused by this connection. Is transmitted to the casing auger E. The bearing cylindrical portion H is configured by providing the receiving portion of the main body 12 with self-aligning roller bearings 19 and 19a and thrust self-aligning roller bearings 20 and 20a whose thrust directions are opposed to each other. Reference numeral 31 is a steady ring of the auger shaft 9 provided on the upper inside of the casing auger E.

In FIG. 1, reference numeral 8 denotes a center shaft auger connected to a center shaft auger drive device 7 mounted on the upper lift A, and an auger shaft 9 is inserted into the shaft cylinder portion 4 of a casing auger E, and a drilling blade 10 is provided. Located in the casing auger E. 9
Reference numeral b denotes an earth removal screw provided on the auger shaft 9 in the casing auger E except for the upper portion.

Reference numeral F denotes a chuck device for fixing the center shaft auger 8 and the casing auger E, and as shown in FIG. 3, the support 1 provided on the main body 12 of the casing auger drive device D.
2a, a plurality of taper blocks 18 fitted to the apparatus main body 17 on the shaft cylinder portion 4 are moved upward by a shifter 16 operated by a hydraulic cylinder 15 which is erected with the rod down, and the taper block 18 for auger shaft 9
It is a device that press-fixes around the periphery of, that is, turns on the chuck. Reference numeral 9a denotes a non-slip ridge on the auger shaft 9 side with respect to the chuck device F. Reference numeral 29 denotes a swinging device for the casing auger E, which is attached to the parallel guide rod 2. Reference numeral 30 is a retaining pin that projects to the left and right by a hydraulic cylinder provided at the lower part of the upper lift A, and is fitted into the pin hole 30a of the intermediate lift B,
The upper lift A and the intermediate lift B are connected. Stop pin 30
May be provided on the intermediate elevator B and the pin hole 30a may be provided on the upper elevator A.

[0016]

INDUSTRIAL APPLICABILITY The present invention relates to a drilling blade 10 for a central shaft auger 8.
And, while rotating the casing auger E in opposite directions, the casing bit 14 cuts out the obstacle layer by its own weight, and the excavating blade 10 of the center shaft auger 8 makes the inside portion into a fragmentary shape, and also the self-weight excavation. Using the lock means G as shown in the invention of claim 2, that is, either the lock pin P or P1 provided on the intermediate lift B and the lower lift C is selected for the pin hole 13 of the parallel guide rod 2. The intermediate elevating table B and the lower elevating table C are lowered by the forced expansion / contraction means S in a scooping insect shape, and powerful excavation can be performed by the casing auger E connected to the lower elevating table C. If the chuck device F according to the invention of claim 3 is used, the output torques of the center shaft auger 8 and the casing auger E are combined to more strongly strengthen only the center shaft auger 8 or only the casing auger E. The weight excavation by can be performed, further in combination with forced excavation by the lock means G, and as it can excavate strongly impaired layer to maximize the split of the present invention the casing auger device the size of the entire device,
The feature is that the excavation force is strong.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment.

FIG. 2 is a front view of a main part of the embodiment.

FIG. 3 is a partially cutaway enlarged front view of the main part.

FIG. 4 is a partially cutaway simplified front view of another main part.

FIG. 5 is an explanatory diagram showing one action.

[Explanation of symbols]

A upper lift B Intermediate lift C lower lift D casing auger drive E casing auger F chuck device G lock means H bearing tube P lock pin P1 lock pin S Forced expansion / contraction means 1 leader mast 2 Parallel guide bar 4-axis cylinder 5 top sheaves 6 main ropes 7 Center shaft auger drive 8 center axis auger 9 auger axis 10 drilling blade 11 hydraulic cylinder 13 pin hole 14 casing bits

Claims (3)

(57) [Claims] 1. A parallel guide rod (2) fixed to a leader mast (1) is provided with an upper lift (A), an intermediate lift (B), and a lower lift (C) independently slidably. , A bearing tube which connects the intermediate lifting platform (B) and the lower lifting platform (C) to each other by means of forcible expansion and contraction means (S), and is provided in the main body of the casing auger drive device (D) mounted on the lower lifting platform (C). The shaft cylinder part (4) at the upper end of the casing auger (E) is pivotally supported on the part (H), and the coaxial cylinder part (4) and the motor part (21) of the casing auger drive device (D) are transmission-coupled. , The upper lift table (A) is suspended and supported by the main rope (6) fed from the top sheave (5), and the center shaft auger (8) is mounted on the center shaft auger drive device (7) mounted on the upper lift table (A). ) Is connected, and the auger shaft (9) of the central shaft auger is connected to the casing auger (E). Insert the drilling blade (10) into the casing auger (E) by inserting it into the shaft tubular portion (4),
Either the intermediate lift (B) or the lower lift (C) can be selectively immovable with respect to the parallel guide bar (2), or both can be slidable with respect to the parallel guide bar (2). Casing auger device provided with locking means (G) 2. Forced expansion / contraction means (S) comprising a hydraulic cylinder (11) connecting the intermediate lift (B) and the lower lift (C) to each other, and a position where the hydraulic cylinder (11) is contracted to a minimum and a maximum. Lock pin (P) that operates in the extended position
And the lock pin (P1) are provided on the intermediate elevator (B) and the lower elevator (C), respectively, and a group of pin holes (13, 13 ...) Into which the lock pin is fitted on the parallel guide rod (2) side. 2. Casing auger device according to claim 1, further comprising locking means (G) provided. 3. A center shaft auger drive device (7) capable of forward and reverse rotation.
Connect the center shaft auger (8) to the casing auger (E)
The casing auger device according to claim 1, wherein a chuck device (F) for chucking the auger shaft (9) of the middle shaft auger (8) is provided on the shaft cylinder part (4) at the upper end of the casing.