JP6946389B2 - H-steel pile press-fitting machine - Google Patents

Description

The present invention relates to an H-steel pile press-fitting machine.

As a press-fitting device for press-fitting a sheet pile into the ground at a construction or civil engineering site, there are the following patent documents.
Japanese Unexamined Patent Publication No. 2008-248511

As shown in FIG. 6, the pile driver 1 is composed of a leader 20, a jack device 30, and a chuck device 10, and is attached to a rough terrain crane 40 which is a base machine.

The leader 20 guides the ascent and descent of the jack device 30, and is suspended from the tip of the boom 41 of the rough terrain crane 40.

The reader 20 includes a columnar guide body 21 extending in the vertical direction, an upper swivel seat 22 attached to the upper end of the guide body 21, and a leader bracket 23 attached to the upper end of the upper swivel seat 22. It is composed of a reaction force plate 24 attached to the lower end portion of the guide main body 21.

The leader 20 can be moved by being lifted by a boom 41, and when it is installed, the reaction force plate 24 at the lower end is grounded on the ground surface and erected on the ground surface.

As shown in FIGS. 7 and 8, the jack device 30 generates a pressure input applied to the steel sheet pile, and includes two hydraulic jacks 31 and 31 arranged at predetermined intervals in the left-right direction. It is composed of a holding portion 35 arranged between the hydraulic jacks 31 and 31, and a slider 34 slidable in the vertical direction along the guide main body 21 is attached to the rear portion of the cylinder 33.

Further, the lower end of the rod 32 of the hydraulic jack 31 is fixed to the tip of the support bracket 25 protruding forward from the guide main body 21.

In such a jack device 30, each cylinder 33, 33 moves up and down along the guide main body 21 of the reader 20 by expanding and contracting the rods 32, 32 of each of the hydraulic jacks 31, 31.

The grip portion 13 is a block through which the grip groove 13a through which the steel sheet pile is inserted penetrates in the vertical direction. The grip groove 13a has a U shape in a plan view corresponding to the cross-sectional shape of the steel sheet pile, and the grip groove 13a Both side ends of the steel are arranged in a bent direction toward the front, and a movable pin 13e that can be extended or retracted is provided in the gripping groove 13a.

The movable pin 13e extends into the grip groove 13a by supplying driving oil into the grip portion 13 from the hydraulic unit provided in the rough terrain crane 40, and discharges the driving oil from the inside of the grip portion 13 to the hydraulic unit. As a result, it retracts from the inside of the gripping groove 13a.

In order to press-fit the steel sheet pile P1 whose side ends are bent forward, the grip grooves 13a of the grip 13 are arranged so that both ends are bent forward. The orientation corresponds to the steel sheet pile P1.

Subsequently, the steel sheet pile P1 is lifted by using a hanging tool (not shown) provided on the upper swivel seat 22 of the leader 20, and lowered from above the chuck device 10 to bring the steel sheet pile P1 into the gripping groove 13a. insert.

With the steel sheet pile P1 inserted in the gripping groove 13a, the movable pin 13e is projected into the gripping groove 13a, the movable pin 13e is brought into contact with the surface of the steel sheet pile P1, and the steel sheet pile P1 is gripped by the pressing force thereof. By sandwiching it in the groove 13a, the gripping portion 13 is in a state of gripping the steel sheet pile P1.

Then, the rod 32 of the hydraulic jack 31 of the jack device 30 is degenerated, and the cylinder 33 is lowered along the reader 20, so that the chuck device 10 is lowered together with the cylinder 33. As a result, the pressure input applied from the jack device 30 is transmitted to the steel sheet pile P1 via the chuck device 10, and the steel sheet pile P1 is press-fitted into the ground by this pressure input.

With the cylinder 33 lowered to the position where the rod 32 is most retracted, the movable pin 13e is retracted from the grip groove 13a to open the steel sheet pile P1 in the grip groove 13a.

After the rod 32 of the hydraulic jack 31 is stretched to raise the cylinder 33 and the rod 32 is stretched most, the steel sheet pile P1 is gripped by the grip portion 13 in the same manner as the press-fitting of the steel sheet pile P1 described above, and the jack device is used. By transmitting the pressure input applied from 30 to the steel sheet pile P1, the press fitting of the steel sheet pile P1 is repeated.

In the chuck device 10, the grip portion 13 rotates in the horizontal direction so that the front-rear direction is reversed and the steel sheet pile P1 can be smoothly guided into the grip groove 13a.

Patent Document 1 is a press-fitting device for press-fitting a sheet pile into the ground, not a device for press-fitting an H-steel pile.

As is well known, the H-steel pile is made of H-steel, and the flange is made thick as a whole by combining the webs, and it is difficult to chuck through the gripping groove of the gripping portion as in Patent Document 1. ..

Further, in Patent Document 1, a leader suspended from the tip of a boom of a crane guides the ascent and descent of a jack device, and a press-fitting operation in which a force is applied due to the presence of a leader having a length and the presence of the crane boom. May cause instability.

On the other hand, a press-fitting machine in which a leader mast is freely provided on a heavy machine such as an earth auger can be considered, but when the chuck device for press-fitting is placed at a high position, it causes an unstable state in which the heavy machine falls. Sometimes.

An object of the present invention is to solve the above-mentioned inconvenience of the conventional example, to provide an H-steel pile press-fitting machine capable of press-fitting an H-steel pile in a safe and stable state and having high safety.

The present invention of claim 1, wherein for achieving the above object, in H steel pile press-fitting machine to operate the remote control, upright support section on the front side or rear side of the base machine having a moving mechanism of the crawler or the like, the The support part is a housing type support part with a height of about 1 to 2 m on the front side or the rear side, and a hydraulic control mechanism is built in the support part, and the elevating jacks are mounted side by side on the support part. , A chuck device for H-shaped steel that moves up and down with the elevating jack along a rail provided on the support portion. The gist is that the base machine is provided with two boxes containing an electric system, a box containing a hydraulic system, and a box containing a drive mechanism such as an engine on the opposite side of the support portion.

According to the first aspect of the present invention, the H-shaped steel can be press-fitted into the ground by gripping the H-shaped steel with the chuck device for the H-shaped steel and pushing down the chuck device with the elevating jack.

In this way, according to the present invention, an H-steel pile can be press-fitted with a chuck device for H-section steel, and a support portion of about 1 to 2 meters is erected without providing a high leader mast or leader. Since we only support the chuck device for H-shaped steel, there is no risk of tipping over without being in a high place, and stable work is required. In addition, the support portion is erected on the front side or the rear side of the base machine and is supported by the entire base machine, so that it is more stable.

Further, since the chuck device for H-shaped steel sandwiches and press-contacts one side of the opposing flanges of H-shaped steel, it does not hold the entire H-shaped steel and efficiently and stably H. Shaped steel can be press-fitted.

Furthermore, by operating with a remote controller, it is not necessary to provide a driver's seat, and the device can be miniaturized and safety can be improved.

The gist of the present invention according to claim 2 is that a hose winding device for a high-pressure hose is provided above the support portion.

According to the second aspect of the present invention, press-fitting can be facilitated by aligning the high-pressure hose from the hose winding device along the H-shaped steel and injecting jet water at the tip of the H-shaped steel. ..

As described above, the H-steel pile press-fitting machine of the present invention can press-fit the H-steel pile in a safe and stable state, and is highly safe.

It is a side view which shows 1 Embodiment of the H steel pile press-fitting machine of this invention. It is a top view which shows one Embodiment of the H steel pile press-fitting machine of this invention. It is a rear view which shows 1 Embodiment of the H steel pile press-fitting machine of this invention. It is a top view of the chuck device for H-shaped steel of the H steel pile press-fitting machine of this invention. It is a perspective view of the chuck device for H-shaped steel of the H steel pile press-fitting machine of this invention. It is a side view which shows the conventional example. It is a side view of the main part which shows the conventional example. It is a top view of the chuck device which shows the conventional example.

Hereinafter, embodiments of the present invention will be described in detail with respect to the drawings. FIG. 1 is a side view showing one embodiment of the H-steel pile press-fitting machine of the present invention, FIG. 2 is a plan view of the same as above, FIG. 3 is a rear view of the same as above, and FIG. 2 in the figure shows an H-steel pile press-fitting machine.

Explaining the base machine 4 having a moving mechanism such as a crawler 3 above, outriggers 43 are provided at four corners, and a housing type support portion 5 having a height of about 1 to 2 m is erected on the front side or the rear side.

In the base machine 4, two large boxes are provided on the opposite side of the support portion 5. One of these boxes has an electric system and a hydraulic system built-in, and the other one has a drive mechanism such as an engine. By providing two large boxes on the opposite side of the support portion 5 in this way, the load balance in the front and rear of the whole can be balanced.

Lifting jacks 6 using hydraulic cylinders are attached to the support portion 5 side by side, and a chuck device 8 for H-shaped steel that is lifted and lowered by the lifting jack 6 is provided along a rail 7 provided on the support portion 5. A flood control mechanism is built in the support portion 5.

As shown in FIGS. 4 and 5, the chuck device 8 for H-section steel rotates on the left and right sides of the upper body 11 having jack through holes 9 through which the elevating jack 6 is inserted and the upper body 11 with a disk body 19. It consists of a lower body 12 that is freely connected. Bearings and the like may be interposed to rotatably connect. Further, although not shown, a hydraulic mechanism may be provided to control the rotation.

The elevating jack 6 to be inserted into the jack through hole 9 has a cylinder portion fixed to the chuck device 8 by welding or screwing.

The lower body 12 is a plate-shaped body having a thick vertical width, and a T-shaped groove 14 is formed on the front side through which a narrow opening 14a is formed. I tried to get in about half.

The lower body 12 faces the T-shaped groove 14 and has a built-in chuck movable claw 16 that can be moved by the chuck cylinder 17, and a pressing receiving plate 18 is arranged on the opposite side thereof.

In this way, the chuck device 8 for the H-shaped steel sandwiches the flange 15a on one side of the flanges 15a facing each other of the H-shaped steel 15 with the chuck movable claws 16 and press-contacts them.

A hose winding device 42 for a high-pressure hose is provided above the support portion 5, and although not shown, the high-pressure hose to be pulled out from the hose winding device 42 is placed along the H-shaped steel 15 to be built, and the nozzle at the tip thereof is set. It can be set at the tip of the H-shaped steel 15.

Water is supplied to the hose winding device 42 separately by a hose.

The base machine 4 does not have a driver's seat, and all operations including the operation of the elevating jack 6 are operated by a remote controller.

Next, the usage will be described. A case where the H-section steel 15 is press-fitted into the ground will be described. The H-shaped steel 15 is erected on the ground and gripped by the chuck device 8 for the H-shaped steel.

In the chuck device 8 for H-shaped steel, of the flanges 15a facing each other of the H-shaped steel 15, only one flange 15a is sandwiched between the chuck movable claws 16 movable by the chuck cylinder 17 and pressure-welded. Do not hold.

Further, since the flange 15a, which is a flat plate, is sandwiched between the front and rear, it can be stably gripped even if only half of the H-shaped steel 15 is gripped.

Subsequently, the chuck device 8 is pushed down by reducing the elevating jack 6, and the H-shaped steel 15 is press-fitted into the ground.

Water may be sprinkled with a high-pressure hose drawn from the hose winding device 42 to soften the ground.

If the chuck device 8 is pushed down by the stroke of the elevating jack 6, the chuck device 8 is released, the elevating jack 6 is raised, and the press-fitting is continued while gripping the H-shaped steel 15 again.

The apparatus of the present invention can be used not only when the H-section steel 15 is press-fitted into the ground but also when it is pulled out.

1 ... Crane driving machine 2 ... H steel pile press-fitting machine 3 ... Crawler 4 ... Base machine 5 ... Support part 6 ... Lifting jack 7 ... Rail 8 ... Chuck device 9 ... Jack through hole 10 ... Chuck device 11 ... Upper body 12 ... Lower part Body 13 ... Gripping part 13a ... Gripping groove 13e ... Movable pin 14 ... T-shaped groove 14a ... Opening 15 ... H-shaped steel 15a ... Flange 15b ... Web 16 ... Chuck movable claw 17 ... Chuck cylinder 18 ... Press receiving plate 19 ... Disc body 20 ... Leader 21 ... Guide body 22 ... Upper swivel seat 23 ... Leader bracket 24 ... Reaction force plate 25 ... Support bracket 30 ... Jack device 31 ... Hydraulic jack 32 ... Rod 33 ... Cylinder 34 ... Slider 35 ... Holding part 40 ... Rough terrain crane 41 ... Boom 42 ... Hose take-up device 43 ... Out trigger

Claims (2)

An H-beam press-fitting machine operated by a remote controller, a support part is erected on the front side or the rear side of a base machine having a moving mechanism such as a crawler, and this support part has a height of about 1 to 2 m on the front side or the rear side. It is a housing type support part, and a hydraulic control mechanism is built in the support part. Elevating jacks are mounted side by side on the support part, and the elevating jack moves up and down along the rail provided on the support part. A chuck device for H-beams, which is provided with a chuck device for H-beams that sandwiches and press-contacts one of the opposing flanges of the H-beams, and has an electrical system on the opposite side of the support in the base machine. An H-beam press-fitting machine characterized in that it is provided with a box with a built-in hydraulic system and two boxes with a built-in drive mechanism such as an engine. The H-steel pile press-fitting machine according to claim 1, wherein a hose winding device for a high-pressure hose is provided above the support portion.

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