JPH0645938B2 - Tremi-pipe handling device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tremie pipe separating apparatus for placing concrete, and in particular, a large number of tremie pipes are screwed and connected so that concrete can be poured to a large depth in the ground. The present invention relates to a tremy handling device suitable for installation.

<< Conventional Technology and Problems >> Conventionally, for example, when a continuous wall made of concrete is built in the ground, a hollow cylindrical tremie pipe is inserted into a vertical groove that has been excavated and concrete is placed. . The tremie tube has a desired length by hollow-cylindrical bodies of several meters in length being screwed together at both ends and connected in a multi-stage manner.

On the other hand, when pouring concrete into the vertical groove, keep the tip of the tremie pipe away from the poured concrete surface, pull up the tremie pipe as the pouring concrete surface rises, and project it to the ground. The upper part of the tremie tube must be separated and disassembled in order.

Otherwise, the upper end of the tremie pipe projects above the ground, making it difficult to place concrete in the tremie pipe.

In this case, there are the following problems particularly when placing concrete at a large depth in the ground, for example, 100 m underground.

That is, in the conventional construction, concrete was poured while gradually lifting the tremie pipe with a large crane or the like, and the tremie pipe was manually separated and disassembled.

For this reason, the tip of the tremie pipe is separated from the surface of the poured concrete, the cast concrete separates and becomes a structural weak point, or it is manual work, which takes time and is inefficient. Due to the large weight, it was a dangerous work and had a safety problem.

In addition, concrete injection into the tremie pipe is usually performed by attaching a funnel-shaped hopper to the upper end of the tremie pipe.When separating and dismantling the tremie pipe, this must be removed and reattached. Since the work was done manually, it was also inefficient in this respect.

The present invention has been made in view of the above-mentioned problems, and its purpose is to remove the manual work of separating and dismantling significantly while the concrete pouring is made in a stable state. It is an object of the present invention to provide a tremie handling device that enhances work efficiency and safety.

<< Means for Solving the Problems >> In order to achieve the above object, the present invention provides a tremie pipe separating apparatus for pulling out and disassembling a tremie pipe formed of a large number of hollow cylinders screw-connected in a multi-stage manner. The device is arranged on the base of the periphery of the insertion position of the tremie tube and is installed on a base, and selectively clamps near the upper end of the tubular body of the tremie tube.
A lift-up device that vertically moves a movable holding unit to be released, a hopper exchanging device that moves up and down together with the lift-up device, holds a hopper for concrete placing, and attaches to and detaches from the upper end of the tremie pipe, and the lift-up device. And a tremie tube disassembling device supported so as to be horizontally rotatable around a column installed on the base adjacent to the device, and the lift-up device has the holding unit holding the tubular body. When the holding unit is raised, the holding unit is lowered when the holding unit is releasing the holding of the tubular body, and the hopper reshuffling device moves the hopper in the raised position of the lift-up device. The hopper is detached from the upper end of the tubular body, and the hopper is attached to the upper end of the tubular body at the lowered position of the lift-up device, and the disassembling device is vertically expandable and expandable. · Includes a collapsible rotary hand,
The rotating hand enters the uppermost cylinder while rotating the next cylinder following the uppermost cylinder, and rotates the rotating hand to release the screw connection with the next cylinder. It is characterized in that it can be done.

<Example> Hereinafter, a preferred example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 to FIG. 3 show an embodiment of the tremie handling device according to the present invention.

In the tremey pipe separating device shown in the figure, a male screw is provided around one end of a hollow cylindrical body 10, and an inner face is engraved with a female screw as the enlarged head 11 at the other end. -Shaped tremie pipe 12, a funnel-shaped hopper 14 is fitted to the upper end of the pipe, and concrete is poured through the hopper 14 and then pulled up by a lift-up device 16 to the ground. The projecting tremie pipe 12 is sequentially disassembled from the upper end portion and stored.

In the initial state, the tremie pipe 12 is inserted into the vertical groove 20 that has been excavated while filling the ground with muddy water 18, and is held by the lift-up device 16 so that its tip is slightly separated from the bottom surface of the vertical groove 20. ing.

The lift-up device 16 is fixed and movable 26,3.
The tremie tube 12 is disposed in the center of the trench 22 which is provided at a position opposite to the vertical groove 20 and which has a pair of gripping units 6 and a base 24 provided so as to surround the tremie tube 12. Installed.

The base 24 is a rectangle arranged so as to straddle between the trenches 22, and a fixed holding unit 26 is arranged on the inner surfaces of the trenches 22 facing each other, and the holding units 26 are a pair of facing each other. and clamping fittings ₂₆ a, 26 _a, is composed of this hardware ₂₆ a, a cylinder ₂₆ causes the 26 _a is close to or spaced horizontally respectively b, 26 _b, the hardware ₂₆ a, 26 _a at the tip semicircular When the cylinders 26 _b and 26 _b are driven, the recesses are formed as notches, and the metal pieces 26 _a and 26 _a come close to each other to hold the portion of the tremie tube 12 projecting above the ground, and the cylinders 26 _b and 26 _b . Due to the degeneracy, the clamp is released.

Further, on a piece where the base 24 crosses the vertical groove 20, a pair of guide columns 28, 28 which are erected at a predetermined interval,
A gate frame 34 is installed which is guided by a plurality of guide rollers 30 and moves up and down by the expansion and contraction of the jack 32.

The lower end of the gantry frame 34, the extension portion 34 _a toward the other side of the base 24 are formed integrally, the concave notch 34 _b of the extension portion 34 _a, the movable clamping units 36
Is provided.

The movable gripping unit 36 has substantially the same configuration as the fixed gripping unit 26, and includes a pair of gripping hardware 36 _a , 36.
_a and a pair of cylinders 36 _b and 36 _b , which are arranged coaxially with the fixed holding unit 26, and are provided with the jack 32.
At the bottom descent dead point, the tremie tube 12 is pinched and released above the fixed pinching unit 26.

Further, a hopper refilling device 38 is installed on the extension 34 _a of the gate frame 34. The hopper refilling device 38 moves up and down together with the frame 34, and the extension 34
a plate 38 _a provided upright on _a, the frame 38
and swingably pin 38 hopper moving cylinder 38 attached at _{b c} to the side of _a, the tip of the telescopic plunger 38 _d of the cylinder 38 _c, and the stay 38 _e projecting from the edge of the hopper 14 the pin 38 attached at _f, has a configuration loosely fitted into the slit 38 _g curved in bored with arcuate above the pin 38 _f the plate 38 _a.

With this configuration, when the plunger 38 _d of the moving cylinder 38 _c is extended, the cylinder 38 _c rotates to the position shown by the dotted line in FIG. 3, and the pin 38 _f moves along the slit 38 _g , so that the hopper 14 moves. As shown by the phantom line in the figure, while rotating upward and separating from the tremie tube 12, when the plunger 38 _d is contracted, the opposite operation is performed,
A hopper 14 can be fitted on the upper end of the tremie tube 12.

On the other hand, a tremie tube disassembling device 40 is installed on one side of the base 24 to which the fixed holding unit 26 is attached.

The disassembling device 40 is a column 40 that is erected on the base 24.
and _a, fitted the rotating arm 40 _b of the L-shaped at the upper end of the strut 40 _a, rotary arm 40 _b is horizontal pivot by driving the hydraulic motor 40 _d which is coupled by a gear 40 _c.

Then, the tip of the rotating arm 40 _b is fixed cylinder guide 40 _e is a tremie pipe pulling cylinder 40 _f of telescopic in the guide 40 _e, the cylinder 40 _f
Stretch plunger supported cylindrical body 40 _g of the interior,
A hand 40 _i that expands and contracts in diameter by a catch cylinder 40 _h is attached to the tip of the cylindrical body 40 _g.
0 _i is a hydraulic motor 40 _k connected by a gear 40 _j
It is designed to be rotated by.

Further, the rotating arm 40 of the tremie tube disassembling device 40.
A storage case 42 for receiving the disassembled tubular body 10 and storing it in a vertical state is installed at a position where _b is rotated about 180 degrees from the position above the tremie tube 12.

The storage case 42 is a main body 42 in which frames are combined in a frame shape.
and _a, is constituted by a pair of guide 42 _b defining a tortuous path to the upper surface, the cylindrical body 10 is housed to project the enlarged head on the guide 42 _b, the guide 42 _b and the cylindrical body 10 It is also possible to interpose a roller between the outer surfaces of the above and to provide a guide with a slope so as to rotate the roller so that the received cylindrical body 10 is automatically fed rearward.

Moreover, the course of the tubular body 10 is moved along the guide 42 _b, provided cleaning apparatus 42 _c having a nozzle for injecting high-pressure jet water, it may be dropped washed sediment adhering to the tubular body 10.

Next, the operation of the separating device having the above structure will be described.

First, in the initial state, that is, during pouring of concrete, the fixed and movable holding units 26 and 36 of the lift-up device 16 hold near the upper end of the uppermost tubular body 10 of the tremie tube 12, and the hopper 14 Tremie tube 1
The hand 40 _i of the disassembling device 40 is set on the side of the storage case 42. In this case, since the concrete is supplied to the hopper 14 on the opposite side where the disassembling device 40 is provided, the concrete can be directly supplied by the concrete mixer truck without any trouble.

When pouring a predetermined amount of the concrete is finished, first, to release the clamping by driving the cylinder 26 _b of the fixed gripping unit 26, to start the Kyakki 32 of the lift-up unit 16, tremie pipe movable clamping units 36 12 Is held and raised by a predetermined stroke, for example, a stroke corresponding to the length of the cylindrical body 10.

Then, the lower holding cylinder 26 is held by the fixed holding unit 26, and the cylinder 38 _c of the hopper refilling device 38 is driven to rotate the hopper 14 upward to separate it from the upper holding cylinder 10.

Thereafter, the rotating arm 40 _b of the cracker 40 to about 180
And degrees horizontally moving the hand 40 _i is entering the upper tubular body 10, to hold the tubular member 10 and enlarged by a catch cylinder 40 _h, to release the holding of the movable clamping unit 36, a hydraulic motor 40 _k Thus, the upper tubular body 10 is rotated via the hand 40 _i to release the screw connection with the lower tubular body 10.

Then, after being raised by the lifting cylinder 40 _f , the rotating arm 40 _b is rotated by 180 degrees, and the upper cylinder 1
0 is placed on the storage case 42, the holding by the hand 40 _i is released, and the upper cylindrical body 10 is received in the storage case.

Here, when the hand 40 _i during operation holds the upper cylinder 10, the movable holding unit 36 descends due to the contraction of the jack 32, and the lower cylinder 10 is again held and the hopper 1 is held.
4 is set on the cylinder 10 by the reshuffling device, the concrete pouring is restarted, and the above-described operation is repeated thereafter.

Now, in the tremie pipe separating apparatus having the above-mentioned configuration, the pair of clamping units 26,
The tremie pipe 12 is firmly sandwiched by 36, and the pull-out separation cycle of the tremie pipe 12 is performed by the vertical groove 2
If the concrete corresponding to the length of the tubular body 10 is set in 0, the tip of the tremie pipe 12 can be constructed without being separated from the concrete surface to be cast. Also,
Since the tremie tube 12 can be pulled out and separated and the hopper 14 can be detached and attached by remote control, safety and work efficiency can be improved, and if a simple sensor is installed at an appropriate place, it can be performed almost automatically, and the work can be performed manually. Can be greatly reduced, and workability and safety can be greatly improved.
In particular, when a large number of cylinders are screwed and connected to pour concrete at a large depth, a further effect can be obtained.

Further, since the disassembled cylinder is housed in the storage case 42 in an orderly manner, not only the working environment is improved, but also the storage case can be moved together with the case, so that the cleaning device 42 _a
It is also possible to wash off the adhered earth and sand by providing.

Furthermore, the devices of the above-described embodiments are all installed on the ground, occupy a relatively small area, and have a vertical groove 2.
Even if the rebar cage is installed near the upper end in 0, it can operate without any trouble.

In the tremey pipe separating device described above, the tremie pipe 12 having a desired length can be inserted into the vertical groove 20 by sequentially connecting the cylindrical bodies 10 by reversing the above-described operation.

Further, it is desirable to install the storage case 40, but depending on the working conditions, the cylindrical case 1 separated and disassembled without installing it.
You may make it stack 0 on the ground.

<< Effects of the Invention >> As described above in detail with reference to the embodiments, in the tremie pipe separating apparatus according to the present invention, it is possible to stably pour concrete and to significantly reduce manual work. However, various excellent effects such as improved work efficiency and safety can be obtained.

[Brief description of drawings]

1 to 3 show an embodiment of a tremie pipe separating apparatus according to the present invention. FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a side view. 10 ... Cylindrical body, 12 ... Tremy tube, 14 ... Hopper 16 ... Lift-up device, 18 ... Mud, 20 ... Vertical groove 22 ... Trench, 24 ... Base, 26 ... Fixed clamping unit 28 …… Guide pillar, 30 …… Guide roller, 32 ……
Jack 34 …… Gate type frame, 36 …… Moveable gripping unit 38 …… Hopper rearrangement device, 40 …… Tremy tube disassembling device 42 …… Storage case

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tadashi Kimura Tadashi Kimura 5-46-4 Oshima, Koto-ku, Tokyo Igarashi Industry Co., Ltd. (72) Susumu Yamamoto 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Company Obayashi Tokyo Head Office (56) References JP-A-60-159219 (JP, A)

Claims (1)

[Claims] 1. A tremie pipe separating device for pulling out and disassembling a tremie pipe formed of a large number of hollow cylinders screw-connected in a multi-stage manner, wherein the device is arranged at the periphery of the insertion position of the tremie pipe. And a lift-up device for vertically moving a movable holding unit that selectively holds and releases the vicinity of the upper end of the cylindrical body of the tremie pipe, and a concrete placing system that moves up and down together with the lift-up device. Hopper exchanging device that holds a hopper for holding and attaches to and detaches from the upper end of the tremie pipe, and a tremie that is supported so as to be horizontally rotatable around a column installed on the base adjacent to the lift-up device. And a pipe disassembling device, wherein the lift-up device raises the holding unit when the holding unit is holding the cylinder, and lifts the holding unit when the holding unit releases the holding of the cylinder. The holding unit is lowered, the hopper exchanging device disengages the hopper from the upper end of the tubular body in the raised position of the lift-up device, and the hopper is placed on the upper end of the tubular body in the lowered position of the lift-up device. The disassembling device is vertically expandable and expandable
A retractable rotating hand is provided, and the rotating hand penetrates into the uppermost cylinder while rotating the next upper cylinder while the next upper cylinder is fixed to rotate the next upper cylinder. A tremie handling device, which is configured so that it can be unscrewed from a tubular body.