JPH0753999B2 - Caisson excavator mounting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for movably mounting an excavator for excavating the ground inside a caisson along a caisson body wall in a circumferential direction.

[Conventional technology]

As an apparatus for movably mounting the excavator along the inner wall of the caisson body in the circumferential direction, for example, as shown in JP-B-60-22132, an annular guide rail having an I-shaped cross section is attached to the inner wall of the caisson body, and this annular guide is used. A device in which an excavator is movably attached along a rail is known.

[Problems to be Solved by the Invention]

With such an attachment device, since the upper and lower guide members provided with the excavator are abutted above and below the annular guide rail having the I-shaped cross section, the excavator is firmly supported without being disengaged from the annular guide rail by the excavation reaction force. However, on the other hand, removing and setting the excavator from the annular guide rail is very difficult and troublesome.

On the other hand, the excavator may be pulled up to the ground for inspection and repair, and as mentioned above, it is very difficult and troublesome to remove and set the excavator from the annular guide rail. Takes time and work efficiency deteriorates.

Therefore, an object of the present invention is to provide a caisson excavator mounting device capable of solving the above-mentioned problems.

[Means and Actions for Solving the Problems]

(1) The upper and lower wheels of an upper and lower guide mechanism provided on the excavator body are brought into contact with the upper and lower guide surfaces of the upper and lower guide rails, and the lower wheels thereof are allowed to swing up and down to swing the lower wheels upward and downward. By moving it, the excavator can be set on the upper and lower guide rails or removed.

(2) The wheels of the upper guide mechanism provided on the excavator body are brought into contact with the upper part of the upper guide rail, and the wheels of the lower guide mechanism provided on the excavator body are brought into contact with the lower part of the lower guide rail, and the wheels are It can swing up and down and its wheels are
The excavator can be set or removed from the upper and lower guide rails by swinging downward.

〔Example〕

An upper guide rail 3 and a lower guide rail 4 are annularly attached to the inner wall 2 of the caisson body 1 along the circumferential direction, and an upper guide member 6 and a lower guide member 7 provided on the excavator body 5 are provided.
Is slidably supported by the upper and lower guide rails 3 and 4.

The upper and lower guide rails 3, 4 are mountain-shaped upper guide surfaces 3a,
4a and lower guide surfaces 3b, 4b, and the upper guide member 6 and the lower guide member 7 are provided on a pair of upper wheels 8, 8, 9, 9 and lower guide surfaces 3b, 4b that abut on the upper guide surfaces 3a, 4a. It is provided with a pair of lower wheels 10, 10, 11, 11 that come into contact with each other, and the lower wheels 10, 11 are substantially supported on the upper and lower movable support brackets 13, 14 supported on the excavator main body 5 so as to be vertically swingable. It is arranged in an eight shape, and the upper and lower movable brackets 13 and 14 are vertically rocked by a cylinder 15 and are held at an upper position by a lock pin 16.

Because of this, the lock pin 16 is pulled out, and the upper and lower movable support brackets 13 and 14 are swung by the cylinder 15 to the lower position shown by the phantom line in FIG. 1 to move the lower wheels 10 and 11 to the lower guide surface 3b, When removed from 4b, the excavator body 5
Since the excavator can be removed by moving it upward with respect to the lower guide rails 3 and 4, the excavator can be raised to the surface of the earth by lifting it with a crane or the like.

Also, suspend the excavator lifted to the surface with a crane, etc., contact the upper wheels 8, 9 with the upper guide surfaces 3a, 4a of the lower and upper guide rails 3, 4 and move the upper and lower parts by the cylinder 15 in that state. With the support brackets 13 and 14 in the upper position, the lower wheels 10 and 11 are brought into contact with the lower guide surfaces 3b and 4b, and the lock pin 16
You can set it by inserting. FIG. 2 shows a second embodiment in which the upper guide rail 3 is provided with a vertical guide surface 20 and an upper guide surface 21.
And the upper guide member 6 is a vertical guide surface 20, a horizontal wheel 22 and a vertical wheel 23 that contact the upper guide surface 21, and the lower guide rail 4 is a vertical guide surface.
The lower guide member 7 is composed of a vertical guide surface 24, a horizontal wheel 26 that abuts against the lower guide surface 25, and a vertical wheel 27. 26 and 27 are attached to a movable support bracket 28 which is vertically swung by a cylinder.

It should be noted that the vertical wheels 23 are connected to the drive source to serve as drive wheels.

Then, by swinging the movable support bracket 28 to the lower position and separating the horizontal / vertical wheels 26, 27 from the vertical guide surface 24 and the lower guide surface 25, the excavator main body 5 can be lifted and removed, and the upper guide Horizontal and vertical wheels 22 and 23 of member 6
Movable support bracket 28 after contacting upper guide surfaces 20, 21
Can be set by swinging the wheel to the upper position and bringing the horizontal / vertical wheels 26, 27 into contact with the vertical / lower guide surfaces 24, 25.

〔The invention's effect〕

(1) The lower wheels 10 and 11 of the upper and lower guide members 6 and 7 are swung downward to lower guide surfaces 3b of the upper and lower guide rails 3 and 4,
Since it can be separated from 4b, the excavator body 5 can be removed by moving it above the upper and lower guide rails 3 and 4 in that state, and again swing the lower wheels 10 and 11 upward to swing the upper and lower guide rails 3 and 4. It can be set by abutting the guide surfaces 3b, 4b of 4 and 4.

Therefore, the excavator can be easily set or removed from the upper and lower guide rails 3 and 4, and
Since the lower wheels 8, 9, 10, 11 are in contact with the upper guide surfaces 3a, 4a and the lower guide surfaces 3b, 4b of the upper and lower guide rails 3, 4, they can be firmly supported without being disengaged by the excavation reaction force.

(2) It can be removed by swinging the wheel of the lower guide member 7 downward and separating it from the lower part of the lower guide rail 4,
Since it can be set by rocking upward and making contact, the excavator can be easily set on and removed from the upper and lower guide rails 3 and 4, and the wheels of the upper guide member 6 can be placed above the upper guide rail 3. Abut and lower guide member 7
Since the wheel of (1) abuts on the lower part of the lower guide rail 4, it can be firmly supported without coming off due to the reaction force of the excavation.

[Brief description of drawings]

1 and 2 are longitudinal sectional views showing first and second embodiments of the present invention. 1 is a caisson frame, 2 is an inner wall, 3 and 4 are upper and lower guide rails, 5 is an excavator main body, 6 and 7 are upper and lower guide members, 8 and 9 are upper wheels, and 10 and 11 are lower wheels.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsu Hirosawa 2-3-3 Akasaka, Minato-ku, Tokyo Komatsu Ltd. (72) Inventor Kaoru Tanaka 2-3-6 Akasaka, Minato-ku, Tokyo Stocks Komatsu Ltd. Head office (56) References Japanese Patent Publication Sho 60-22132 (JP, B2)

Claims (2)

[Claims] 1. An upper guide rail 3 and a lower guide rail 4 are attached to an inner wall 2 of a caisson body 1 along a circumferential direction,
The excavator main body 5 is provided with an upper guide member 6 and a lower guide member 7, and the upper guide member 6 contacts the upper guide surface 3a of the upper guide rail 3 and the lower wheel contacts the lower guide surface 3b. An upper wheel 9 that has a lower guide wheel 7 and an upper guide surface 4a that contacts the lower guide rail 4 and a lower wheel that contacts the lower guide surface 4b. An excavator mounting device for a caisson, characterized in that it has 11 and that the lower wheel 11 can swing up and down. 2. An upper guide rail 3 and a lower guide rail 4 are attached to an inner wall 2 of a caisson body 1 along the circumferential direction,
The excavator main body 5 is provided with an upper guide member 6 and a lower guide member 7, and the upper guide member 6 has wheels that abut on the upper part of the upper guide rail 3, and the lower guide member 7 is provided on the lower part of the lower guide rail 4. A caisson excavator mounting device having a wheel that abuts and swings up and down.