JP2933567B2 - Caisson Hakouchi drilling rig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator for excavating a caisson box.

[0002]

2. Description of the Related Art A caisson box is placed under pressure to prevent ground collapse and to prevent water from flowing, and work such as excavation under pressure imposes a heavy burden on workers.

[0003] Therefore, automation of work such as excavation in a caisson box has been proposed and implemented.

However, the caisson box is usually of a rectangular shape, and in the case of a conventional automatic excavator, it is difficult to excavate the corner of the rectangular caisson, and excavation of the corner has to be performed manually. Did not.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a caisson box capable of automatically excavating to the corner of a rectangular caisson without manual operation, and capable of automatically transporting excavated waste to the outside of the caisson. The purpose of the present invention is to provide an internal excavator.

[0006]

According to the present invention, a plurality of guide rails are provided in parallel with the width direction of the lower surface of a rectangular caisson box, and the guide rails are suspended from the guide rails via a frame traveling device. , A first lipper truck, a second ripper truck, and a ripper truck drive truck suspended so as to be able to travel at both ends and in the middle of the frame, respectively.
A ripping device provided on the second ripper truck so as to be able to undulate via an up / down cylinder and a thrust cylinder, and an idler sprocket provided at both ends of the frame.
A traction chain connecting the drive sprocket of the drive trolley and the first and second ripper trolleys via the idler sprocket, a reaction force receiving cylinder for selectively locking the frame to the lower surface of a caisson, and the drive trolley. And a frame fixing device for ripping which is selectively fixed to the frame.

Further, according to the present invention, a frame traveling device for traveling on a frame, a reaction force receiving cylinder for retaining the frame, a frame fixing device for ripping for retaining a driving bogie, an up / down cylinder, a thrust cylinder, a ripping device, and a drive The driving sprocket of the bogie is connected to a central control device provided on the ground.

According to the present invention, there are provided a plurality of guide rails provided in parallel to the width direction of the lower surface of the rectangular caisson box, a frame hung freely on these guide rails via a frame traveling device, and A first and second ripper trucks suspended on both ends of the frame, respectively; a ripping device provided on the first and second ripper trucks via a hoisting cylinder and a thrust cylinder so as to be undulating; 1, a driving device including a driving sprocket provided on a second ripper cart and guide sprockets on both sides of the sprocket, a towing chain connecting the driving sprocket to both ends of the frame via both guide sprockets, and the frame And a reaction force receiving cylinder for selectively locking the lower surface of the caisson.

Further, according to the present invention, the frame traveling device that travels the frame, the reaction force receiving cylinder that locks the frame, the undulating cylinder, the thrust cylinder, the ripping device, and the driving sprocket of the driving device are provided on the ground. Connected to central controller.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, a plurality (four in the illustrated example) of guide rails 1 are provided on the lower surface of the rectangular caisson box K in parallel with the width direction. A long frame 3 is hung on the guide rails 1 by a pair of frame traveling devices 2 having guide rollers per guide rail 1 so as to be able to travel.

At both ends and in the middle of the frame 3, first and second ripper trucks 10 a and 10 b (hereinafter collectively referred to as 10) through four sets of guide roller devices 4.
) And a ripper truck drive truck 20 are suspended so as to be able to travel freely. A pair of reaction force receiving cylinders 5 for selectively locking the frame 3 to the caisson K are respectively provided near the ends of the frame 3, and a pair of first and second idler sprockets are provided inside the ends. 6a and 6b are provided. Further, the driving bogie 20 includes
Is fixed to the frame 3 selectively at the time of ripping.

An impact hydraulic unit 12 is provided inside the main body 11 of the ripper cart 10, and a ripping device 15 is provided on the side of the peripheral wall W of the caisson box K via a pair of undulating cylinders 13 and thrust cylinders 14. Are provided so as to be able to undulate. In the ripping device 15,
A ripper shank 17 is provided which is operated at impact 16 using a pneumatic cylinder.

A drive sprocket 22 at the center and first and second guide sprockets 23a and 23b on both sides are provided on both sides of the main body 19 of the ripper carriage drive carriage 20, respectively. It is designed to be driven. A power supply reel 25 is provided on the main body 19, and the drive device 24 is connected to a power supply facility (not shown) on the ground by a power supply cable bear 26 via the reel 25.

The first from the upper side of the drive sprocket 22 of the traction chain 27 driven by the drive sprocket 22
The first portion 27a facing the ripper cart 10a is connected to the left end in the drawing of the main body 11 of the first ripper cart 10a via the upper side of the first guide sprocket 23a and the first idler sprocket 6a. The second portion 27b connected to the right end of the main body 11 reaches the lower side of the drive sprocket 22 via the lower side of the first guide sprocket 23a, and extends upward to the second side from the upper side of the second guide sprocket 23b. The third part 27c is connected to the second ripper bogie 10b via the second idler sprocket 6b of the second ripper bogie 10a.
Is connected to the right end of the main body 11. The fourth portion 27d connected to the left end of the main body 11 faces upward from the lower side of the second guide sprocket 23b.
7a. Therefore, in FIG. 2, when the driving sprocket 22 is rotated clockwise, the first and second ripper carts 10 a and 10 b are pulled by the pulling chain 27 in a direction approaching each other, that is, inside the caisson box K, and are rotated counterclockwise. Is moved to the peripheral wall W side of the caisson box K.

The frame traveling device 2, the reaction force receiving cylinder 5, the impact hydraulic unit 12, the undulating cylinder 13, the thrust cylinder 14, the impact 16, the ripping frame fixing device 21, the driving device 24, etc.
Each is connected to a central control device (not shown) provided on the ground.

At the time of excavation, the reaction force receiving cylinder 5 is extended to lock the frame 3 on the lower surface of the caisson box K, and at the time of ripping, the frame fixing device 21 is operated to fix the driving bogie 20 to the frame 3.

Therefore, the drive cylinder 24 is rotated clockwise by the drive device 24, and the undulating cylinder 13 is extended while the first and second ripper trucks 10a and 10b are moved inward of the caisson box K by the traction chain 27. To give a depth of cut D to the shank 17 and to contract the thrust cylinder 14 to give a thrust to the shank 17 to reduce the impact 1
6 is operated to continuously excavate the inside of the caisson box K by the ripper shank 17 even on hard rock. And both carts 10a,
When the shanks 17 of 10b approach on the center side of the caisson box K, the undulating cylinder 13 is contracted, the cutting edge of the shank 17 is raised to the upper position U, and the drive sprocket 22 is rotated counterclockwise, and both carriages 10a, 10b To its original position. The drilling waste collected in the central part of the caisson box K
It is transported outside by another known means.

The left uncut portions of the two carts 10a and 10b are loosened by loosening the fixing device 21 of the drive cart 20, fixing the ripper cart 10 and rotating the sprocket to move the drive cart 21, and drive the car again. Excavation can be performed by fixing the carriage 21. Next, the frame 3 is moved along the guide rail 1 by the width of the shank 17,
The same continuous excavation as above is performed. All of these operations are automatically and continuously performed by the central controller.

4 to 6 show another embodiment of the present invention. The first and second ripper trucks 30a and 30b provided at both ends of the frame 3 so as to be able to travel freely include:
First and second driving devices 40a, 40b are provided, respectively, and the driving devices 40a, 40b are provided with first and second driving sprockets 41a, 41b at the center and first and second guide sprockets 42a, 42b at both upper sides. Are provided. The first pulling chain 43a wound around the first drive sprocket 41a from below is connected to the first guide roller 4a.
2a, 42a guides and extends left and right, and ends a,
b is fixed to the left and right ends of the frame 3 by means (not shown), and the second traction chain 43b is also configured in the same manner.

At the time of excavation, in the first ripper bogie 30a, the first driving sprocket 41a is rotated clockwise to make the first ripper bogie 30a go right and excavate the range L1 with the shank 17. Similarly, in the second ripper truck 30b, the second drive sprocket 41b is rotated counterclockwise, and the second ripper truck 30b is moved leftward to excavate the range L2.

[0021]

According to the present invention, as described above, automatic excavation can be performed to the corner of a rectangular caisson without human power.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a side view showing another embodiment of the present invention.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a view taken in the direction of arrow A in FIG. 4;

[Explanation of symbols]

 K: Caisson box W: Perimeter wall 1: Guide rail 2: Frame running device 3: Frame 4: Guide roller device 5: Reaction force receiving cylinder 6a: First Idler sprocket 6b 2nd idler sprocket 10a, 30a 1st ripper trolley 10b, 30b 2nd ripper trolley 11 ・ ・ ・ Main body of ripper trolley 12 ・ ・ ・ Hydraulic unit for impact 13 ・ ・ ・Raising and lowering cylinder 14 ・ ・ ・ Thrust cylinder 15 ・ ・ ・ Ripping device 16 ・ ・ ・ Impact 17 ・ ・ ・ Ripper shank 19 ・ ・ ・ Main body of drive truck 20 ・ ・ ・ Ripper truck drive truck 21 ・ ・ ・ Frame fixing device during ripping 22: drive sprockets 23a, 42a: first guide sprocket 23b, 42b: second guide sprocket 4 ... Driver 25 ... Power supply reel 26 ... Cable carrier for power supply 27 ... Towing chain 40a ... First drive 40b ... Second drive 41a ... First drive sprocket 41b 2nd drive sprocket 43a 1st tow chain 43b 2nd tow chain

Claims (4)

(57) [Claims] 1. A plurality of guide rails provided in parallel to the width direction of the lower surface of a rectangular caisson box, a frame suspended on these guide rails so as to be able to run through a frame running device, and both ends of the frame and First and second ripper bogies and ripper bogie driving bogies each suspended midway, and a ripping device provided on the first and second ripper bogies via a hoisting cylinder and a thrust cylinder so as to be able to move up and down. An idler sprocket provided at both ends of the frame; a tow chain for connecting the drive sprocket of the drive bogie with first and second ripper bogies via the idler sprocket; A reaction force receiving cylinder that locks on a lower surface, and a ripping frame fixing device that selectively fixes the driving bogie to a frame. A caisson box inner excavator, which is provided. 2. A frame traveling device that travels on a frame,
The reaction force receiving cylinder for locking the frame, the frame fixing device for ripping for locking the driving bogie, the up / down cylinder, the thrust cylinder, the ripping device and the driving sprocket for the driving bogie are connected to a central control device provided on the ground. The caisson box excavator according to claim 1, wherein: 3. A plurality of guide rails provided in parallel to the width direction of the lower surface of the rectangular caisson box, a frame suspended from these guide rails so as to be able to travel via a frame traveling device, and both ends of the frame. First and second ripper trucks respectively hung so as to be able to travel freely, a ripping device provided on the first and second ripper trucks via an up-and-down cylinder and a thrust cylinder, and first and second ripper A driving device including a driving sprocket provided on a bogie and guide sprockets on both sides of the sprocket; a traction chain connecting the driving sprocket to both ends of the frame via the two guide sprockets; A caisson box inner excavator, characterized in that a reaction force receiving cylinder which is locked on a lower surface is provided. 4. A frame traveling device for traveling on a frame,
Reaction force receiving cylinders that lock the frame, undulating cylinders,
The caisson box excavator according to claim 3, wherein the thrust cylinder, the ripping device, and the driving sprocket of the driving device are connected to a central control device provided on the ground.