JPH0738392Y2 - Installation and recovery device for caisson excavator - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is to install a traveling platform with an excavator attached to a caisson frame, or to separate an excavator that has finished work together with the traveling platform from the caisson frame and collect it on the ground. The present invention relates to a caisson excavator installation and recovery device that enables remote operations.

(Prior Art) As shown in Japanese Patent Publication No. Sho 60-22132, a pair of upper and lower annular traveling rails are provided on the inner wall of the caisson body, and the traveling platform can be moved along the traveling rails and provided on the locking traveling platform. There is a known excavator for excavating the ground inside the caisson by means of an excavator.

In such an excavating device, it is necessary to allow the traveling platform to move smoothly along the traveling rail without rattling and to prevent rattling due to the excavation reaction force.

Therefore, a pair of upper and lower annular traveling rails are accurately installed so as to be parallel to each other along the longitudinal direction of the circumference of the caisson body wall, and a plurality of rollers are provided on the traveling platform to grip the traveling rail, and It is movable along the traveling rail.

However, it is practically impossible to install the large-sized and heavy-duty running rails parallel to each other in the longitudinal direction of the circumference with accuracy, and at present, the rollers provided on the running rack so as to absorb the installation error of the running rails. I had to accept that there was a gap between the rail and the running rail.

For this reason, the traveling platform moves while rattling, or rattling due to the excavation reaction force causes damage to the excavator provided between the traveling rail and the roller or the excavator provided on the traveling platform due to excessive force. There was a flaw.

In order to improve such a drawback, the traveling platform is provided with a plurality of rollers for gripping one traveling rail from the left, right, up and down, and two brackets having a plurality of rollers for grasping the other traveling rail from the left, right, up and down are mutually attached. A moving guide device for a traveling pedestal that is swingably provided so that a gap error between one traveling rail and the other traveling rail can be absorbed by the swinging of a plurality of rollers swinging together with a bracket is disclosed in Japanese Patent Application No. -265246 (Japanese Patent Laid-Open No. 3-129013).

(Problems to be solved by the invention) However, in the above-mentioned application, since the plurality of rollers sandwich the traveling rail from above and below, when the operator finishes the work and collects the excavator, the operator can remove the traveling rail from the traveling rail. There is a drawback in that the traveling base has to be separated and a lot of man-hours are required for the separation and recovery work.

This invention was made for the purpose of improving the above-mentioned drawbacks.
A caisson excavator installation / recovery device that enables remote operation of installing a traveling platform with an excavator attached to the caisson frame or separating the completed excavator together with the traveling platform from the caisson frame and collecting it on the ground. It is provided to facilitate the excavator recovery work.

(Means and Actions for Solving the Problem) In order to achieve the above-mentioned object, the present invention is designed so as to be mounted on a running rail having a partially discontinuous portion, which is attached in parallel in two steps up and down along the inner peripheral surface of the caisson body. An excavator for excavating the inside of the caisson body is attached to the traveling platform, and an elevating rail is attached to the inner peripheral surface of the caisson body at the discontinuous portion in the vertical direction, and the elevating rail is detached from the traveling rail. In a caisson excavator equipped with a lifting platform that can be lifted up and down, and a connecting rail that is located on a discontinuous portion of the traveling rail and that can transfer the traveling platform,
At the excavator installation and recovery position where the elevating rail and the traveling rail intersect, an elevating pedestal lower part locking mechanism for engaging the lower part of the elevating pedestal with the inner wall of the caisson frame, and an upper part of the elevating pedestal with the traveling rail. An elevating pedestal top locking mechanism for stopping is provided.

The upper locking mechanism is configured so that the interlocking pin can be inserted into and removed from the pin hole of the locking bracket by expanding and contracting the lifting platform locking cylinder, and the lower locking mechanism excavates the positioning pin of the lifting platform. It is configured to be fitted into the pin hole of the positioning bracket when lowered to the machine recovery position.

In this way, the excavator can be installed and recovered by the positioning and the cylinder operation that can be performed by remote control.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a front view of a lifting platform for installing and recovering an excavator for excavating inside the caisson body, Fig. 2 is a plan view of Fig. 1 (view II-II), and Fig. 3 is Fig. 1. The top view (III-III view) of the lower part locking mechanism of is shown.

In these figures, 1 is a caisson skeleton, 2 and 2 are running rails which are attached in parallel to the upper and lower two stages along the inner peripheral surface of the caisson skeleton 1, and have some discontinuous portions, and 3 and 3 are caisson skeletons 1.
Is a lifting rail that is attached in the up-down direction and intersects with the traveling rail at a discontinuous portion, and 4 is a lifting platform mounted on the lifting rails 3 and 3 so as to be vertically movable.

As shown in FIG. 2, the elevating and lowering stand 4 has an arcuate flat surface which is curved to have substantially the same curvature as the inner peripheral surface of the caisson body 1, and the upper and lower parts thereof are vertically arranged on the inner peripheral surface of the caisson body 1. It has connecting rails 5 and 5 that can be connected to traveling rails 2 and 2 that are separately provided in parallel with.

At the excavator installation / recovery position A where the traveling rails 2, 2 and the elevating rails 3, 3 intersect, an elevating platform locking mechanism for locking the elevating platform 4 to the caisson frame 1 and the traveling rail 2 is provided.

The lifting platform locking mechanism locks the lifting platform upper locking mechanism 6H that locks both upper sides of the lifting platform 4 lowered to the excavator installation / recovery position A to the upper traveling rails 2, and the lower part of the lifting platform 4. It has a lifting platform lower locking mechanism 6L.

The lifting platform upper locking mechanism 6H is provided on both upper and left and right sides of the lifting platform 4 and on the upper traveling rail 2, and has locking pins.
6a is horizontally supported at a position where it can be inserted into and removed from the pin hole 4b of the locking bracket 4a fixed to the upper part of the lifting platform 4.

The base end of the locking pin 6a is connected by a pin 6e to one end of a substantially V-shaped lever 6d pivotally supported by a pin 6g on a guide member 6c that supports the locking pin 6a. ing.

The other end of the lever 6d is a bracket fixed on the upper traveling rail 2 installed on the inner peripheral surface of the caisson frame 1.
2a is connected to the lower end of the lifting platform locking cylinder 7 whose upper end is pivotally supported by a pin 6f, and the lever 6d is linked by expanding and contracting these lifting platform locking cylinders 7.
Is rotatable about the pin 6g so that the tip of the pin 6a connected to the lever 6d can be inserted into and removed from the pin hole 4b of the locking bracket 4a.

On the other hand, the lower lifting platform locking mechanism 6L is provided on the left and right under the lifting platform 4 and on the inner wall of the caisson frame 1,
Positioning pins 6b that lock the lower part of the lifting platform 4 are projected downward on both sides of the lower part of the lifting platform 4 and have a tapered tip, and the positioning pin 6b is fitted on the inner wall of the caisson frame 1. A positioning bracket 1a having a pin hole 1b opened on the upper surface is fixed.

Then, when the lifting platform 4 descends to the excavator installation and collection position A, the positioning pin is placed in the pin hole 1b of the positioning bracket 1a.
6b is fitted from above, and the running rails 2, 2 and the connecting rails 5, 5
Are positioned so that they coincide with each other, and at the same time, the lower part of the lifting platform 4 is locked.

Although not shown, a traveling platform is movably attached to the traveling rails 2 and 2 via traveling rollers, and an excavator for excavating the inside of the caisson frame 1 is mounted on the traveling platform.

Next, the operation will be explained. When installing the excavator on the caisson frame 1 to start the excavation work, first, the traveling platform is moved onto the connecting rails 5, 5 of the elevating platform 4 to grasp the caisson traveling platform. The traveling platform is gripped by the connecting rails 5, 5 of the elevator platform 4 (neither is shown), and in this state, the elevator platform 4 is lowered along the elevator rail 3 by using an elevator means such as a crane.

When the lifting platform 4 reaches the excavator installation and collection position A, first, the positioning pins 6b provided on the left and right of the lower portion of the lifting platform 4
Is inserted from above into the pin hole 1b of the positioning bracket 1a fixed to the inner peripheral surface of the caisson skeleton body 1, and the lifting platform 4
The connecting rails 5, 5 are positioned so as to match the traveling rails 2, 2 attached to the inner peripheral surface of the caisson frame 1.

After that, hydraulic pressure is supplied to the lifting platform locking cylinders 7 provided at the left and right ends of the upper traveling rail 2 to extend the lifting platform locking cylinder 7, and the lifting platform locking cylinder 7 is connected to the lifting platform locking cylinder 7 by a pin 6f. When the lever 6d is rotated about the pin 6g of the guide member 6c as a fulcrum, the locking pin 6a, which is connected to the other end of the lever 6d by the pin 6e, is moved to the lifting platform 4 side.

As a result, the tips of the locking pins 6a are inserted into the pin holes 4b of the locking brackets 4a provided on the left and right of the upper part of the lifting platform 4,
The upper part of the lifting platform 4 is locked on the upper running rail 2 installed on the inner peripheral surface of the caisson frame 1.

When the lifting platform 4 is completely locked as described above, the gripping device of the traveling platform is released to move the traveling platform from the connecting rails 5, 5 side of the lifting platform 4 to the traveling rails 2, 2 side. It is possible to install a traveling platform equipped with an excavator in the caisson frame 1.

The above is the installation operation of the traveling platform to which the excavator is attached, but when the work is completed and the work is collected, the operation is the reverse of the above.

That is, the excavator after the work is moved from the traveling rails 2, 2 side to the elevating platform 4 together with the traveling platform, and is gripped by the elevating platform 4 by the gripping device of the traveling frame.

After that, the hydraulic pressure is reduced from the lifting platform locking cylinder 7 to shorten the lifting platform locking cylinder 7 and pull out the locking pin 6a from the locking bracket 4a. Then, the lifting frame 4 such as a crane lifts the lifting platform 4. By raising along 3 and 3, the excavator can be retrieved by remote control.

(Effects of the Invention) As described in detail above, this invention allows a worker to manually perform installation and recovery of a traveling mount equipped with an excavator for excavating the inside of a caisson body by remote control, as in the past. No need to install or remove the excavator on the caisson frame.

This enables the excavator to be installed and recovered quickly and safely.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a front view of an elevating stand, FIG. 2 is a II-II view of FIG. 1, and FIG. 3 is a III-III view of FIG. . 1 ... Caisson frame, 1a ... Positioning bracket 1b ... Pin hole, 2 ... Traveling rail 2a ... Bracket, 3 ... Lifting rail 4 ... Lifting platform, 4a ... Locking bracket 4b ... Pin hole, 5 ... Connecting rail 6H ... Top locking Mechanism, 6a ... Locking pin 6b ... Positioning pin, 6c ... Guide member 6d ... Lever, 6e ... Pin 6f ... Pin, 6g ... Pin 6L ... Lower locking mechanism, 7 ... Lifting platform locking cylinder

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Tomoaki Miyazaki 3-1-1, Ueno, Hirakata-shi, Osaka Komatsu Seiki Co., Ltd. (72) Tsuyoshi Kitamura 3-1-1, Ueno, Hirakata-shi, Osaka Komatsu Seiki (56) References JP-A-3-115619 (JP, A) JP 60-22132 (JP, B2) JP 61-10611 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A traveling rail 2, which is attached in parallel to the upper and lower two stages along the inner peripheral surface of the caisson frame 1 and has a partially discontinuous portion,
2 An excavator for excavating the inside of the caisson frame 1 is attached to a traveling platform that travels above, and lifting rails 3, 3 are attached in the vertical direction on the inner peripheral surface of the discontinuous portion of the caisson frame 1, Elevating pedestals 4 that can be detached from the traveling rails 2 and 2 are attached to the elevator rails 3 and 3 so that they can be moved up and down, and the traveling pedestals are transferred to the elevator pedestals 4 and located at discontinuous portions of the traveling rails 2 and 2. In the excavator in the caisson provided with the connecting rails 5, 5, the lower part of the elevating platform 4 is placed at the excavator installation / recovery position A where the elevating rails 3, 3 and the traveling rails 2, 2 intersect. And a lower lifting mechanism locking mechanism 6L that locks the inner wall of the upper and lower carriages, and an upper lifting mechanism locking mechanism 6H that locks the upper part of the lifting carrier 4 to the upper traveling rail 2 and further, the upper locking mechanism 6H. Engages the interlocking pin 6a by expanding and contracting the lifting platform locking cylinder 7. It is configured to allow insertion and removal into the pin hole 4b of the bracket 4a, the lower locking mechanism 6L
Is configured to be fitted into the pin hole 1b of the positioning bracket 1a when the positioning pin 6b of the lift base is lowered to the excavator recovery position A, and the lift base 4 is remotely operated to move the lift mount 4 to the excavator installation recovery position A. Installation and recovery device for caisson excavator that can be engaged and disengaged with.