JP7451339B2 - Work scaffolding for pile moving equipment - Google Patents

Description

The present invention relates to a work scaffold for a pile moving device that moves on existing piles.

Conventionally, pile moving devices that move on a plurality of existing piles have been put into practical use. As such a pile moving device, a pile press-in machine has been proposed that can drive objects such as sheet piles and piles with almost no noise or vibration, as described in Non-Patent Document 1. This pile press-in machine is installed on the pile while holding the existing pile when taking reaction force from the existing pile, and when piles such as sheet piles are driven in succession, the piles are driven one after another. It has a structure that moves on piles along the

In recent years, a work stage has been proposed that is attached to the side of a pile press-in machine and serves as a foothold for operators and workers, as disclosed in Patent Document 1 and Non-Patent Document 2. By employing such a work stage, operators and workers can be placed around the pile press-in machine without providing temporary scaffolding corresponding to the press-fit positions of the piles that are sequentially moved. Such a work stage is transported to a predetermined construction site as the pile press-in machine moves, and is put into use after being attached to the pile press-in machine.

Patent No. 3970099

"SILENTPILING TECHNOLOGIES", [online], May 30, 2020, National Press-In Association, [Retrieved July 30, 2020], Internet <URL: https://www.giken.com /ja/wp-content/uploads/2017/06/press-in_method_variations.pdf〉 "Piler Stage", [online], April 21, 2014, Giken Seisakusho Co., Ltd., [searched on July 30, 2020], Internet <URL: https://www.giken.com/ja/ wp-content/uploads/aux_pilerstage.pdf〉

According to the conventional work stage, a worker can move on the work stage and perform work, but the work that the worker can do is limited to work within reach from the work stage. It was difficult to perform work that was out of reach from the work stage. In addition, conventional work stages have little freedom in the movement of workers, and there are limits to the types of work that can be performed. Furthermore, if there are obstacles within the movement range of the pile press-in machine, including the work stage, or if corner construction is to be performed, it may be necessary to partially dismantle the work stage attached to the pile press-in machine. In this case, parts of the work stage had to be removed and reattached each time work was performed, resulting in a decrease in work efficiency during construction.

In addition, in addition to pile press-in machines, there are other devices for moving the press-in system onto piles to achieve construction without erection, such as cranes that suspend piles and power source transport devices that transport the power source of the pile press-in machine. . A work stage for moving a worker is sometimes attached to these pile moving devices as well, but there are problems similar to those when a work stage is attached to a pile press-in machine. In addition, pile press-in machines and cranes involve lifting and lowering operations when moving on piles, so if a stage is attached to each of the pile press-in machine, crane, and power source transfer device, the pile press-in machine or crane It was necessary to move each pile moving device so that the stages would not overlap each other when going up and down. That is, in the conventional stage structure, it is necessary to leave a certain amount of space between each pile moving device in the front and back direction, and the degree of freedom of movement of each pile moving device is restricted. Therefore, there is room for improvement in terms of workability of the press-fitting system as a whole. Therefore, there has been a need to develop a scaffold for work that has a structure completely different from that of conventional work stages.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to improve workability during construction around a pile moving device using a work scaffold with a new structure.

The present invention, which solves the above problems, is a work scaffold for a pile-mounted moving device that is installed in a pile-mounted moving device that moves on an existing pile and serves as a scaffold when working around the existing pile. a swingable boom attached to at least one of the right side and left side of the pile moving device; a horizontally rotatable link member attached to the tip of the boom; It is characterized by comprising a hoisting arm that is attached to the tip of the hoisting arm and is movable in the horizontal direction, and a workbench that is attached to the tip of the hoisting arm and is rotatable in the horizontal direction. There is.

The link member may be fixedly attached to the boom at a predetermined angle.

The pile moving device may be a pile press-in machine.

The boom may be attached to a saddle of the pile press-in machine.

According to the present invention, the work scaffolding with a new structure can improve workability during construction around the pile moving device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the pile press-in machine concerning embodiment of this invention. This figure shows the pile press-in machine viewed from the right side. It is a top view of a pile press-in machine. It is a front view of a pile press-in machine. It is a perspective view of a pile press-in machine for explaining the schematic structure of a working scaffold. In this figure, illustration of some components of the pile press-in machine is omitted. FIG. 2 is a side view showing a schematic configuration of a work scaffold. FIG. 2 is a plan view showing a schematic configuration of a work scaffold. It is a top view which shows the work scaffold when the angle which a boom and a link member make is 90 degrees. FIG. 6 is a diagram showing a state when the work platform is raised. FIG. 3 is a diagram showing a state when the work platform is lowered. It is a figure showing an example of operation of a work scaffold. FIG. 6 is a diagram showing an example of the operation of a work scaffold without link members. It is a figure which shows the example of attachment of the work scaffold to a pile moving device.

Embodiments of the present invention will be described below with reference to the drawings. Note that in this specification and the drawings, elements having substantially the same functional configuration are designated by the same reference numerals and redundant explanation will be omitted. Moreover, in this specification, the front refers to the direction in which the pile press-in machine 70 advances the press-fitting process, and in FIGS. 1 and 2, the right side is the front, and the left side is the rear. In FIG. 3, the direction upward from the page is the front, and the direction downward from the page is the rear. The left-right direction is determined by looking from above in the direction of progress of press-fitting, and in FIG. 1, the upper side of the paper is the right side, and the lower side of the paper is the left side. In FIG. 2, the lower side is the right side, and the upper side is the left side. In FIG. 3, the right side is the left side, and the left side is the right side.

FIG. 1 is a side view showing a pile press-in machine 70 which is an example of a pile moving device equipped with a working scaffold 1 for a pile moving device according to the present embodiment (hereinafter simply referred to as “working scaffold”). 2 is a top plan view of the pile press-in machine 70 shown in FIG. 1, and FIG. 3 is a front view of the pile press-in machine 70 shown in FIG. 1, seen from the front.

First, before explaining the working scaffolding 1 according to the present embodiment, the pile press-in machine 70 to which the working scaffolding 1 is attached will be explained.

As shown in FIGS. 1 to 3, the pile press-in machine 70 has a saddle 72 that has a plurality of clamps 71 that grip existing piles P that are press-fitted in parallel into the ground, and can slide back and forth on the saddle 72. A sliding part 73 provided on the sliding part 73, a turning part 74 provided on the sliding part 73 so as to be able to turn left and right, and a pile P that is provided in the front part of the turning part 74 so as to be slidable up and down and press-fitted therein. and an elevating body 76 having a chuck 75 that can grip and hold the elevating body 76.

The pile press-in machine 70 having such a configuration can continuously press-fit the piles P into the ground in an almost noiseless and vibration-free state without using impact or vibration. Furthermore, when the chuck 75 grips the pile P that is at least partially pressed into the ground, and the lifting body 76 is lowered with the clamp 71 releasing the grip on the pile P, the saddle 72, the sliding part 73 and the turning part 74 can be raised. Then, by operating the slide portion 73 and the turning portion 74 in this state, the saddle 72 can be moved back and forth or turned. In addition, although the U-shaped steel sheet pile is shown as an example of the pile P in this Embodiment, the pile P may be other piles, such as a hat-shaped steel sheet pile, a concrete sheet pile, a steel pipe pile, and a steel pipe sheet pile.

Next, the work scaffold 1 according to the present embodiment will be explained. The work scaffold 1 of this embodiment is attached to the right side of a saddle 72 of a pile press-in machine 70, as shown in FIGS. 1 to 4. Further, as shown in FIGS. 5 and 6, the work scaffold 1 includes a boom 10, a link member 20, an undulation arm 30, and a work platform 40. Note that FIG. 5 is a side view of the work platform 1 in a state in which the longitudinal direction of the boom 10, the longitudinal direction of the link member 20, and the longitudinal direction of the undulating arm 30 are oriented in the same direction. FIG. 6 is a top plan view of the work scaffold 1 in the same state.

The boom 10 is attached to a saddle 72 of a pile press-in machine 70 so as to be extendable and pivotable. The boom 10 of this embodiment includes a plurality of telescoping cylinders 11, and each telescoping cylinder 11 is connected to each other. These connected telescopic cylinders 11 perform telescopic operations, so that the boom 10 is configured to be telescopic. Further, in this embodiment, a rotary cylinder 12 is provided at the connection portion between the pile press-in machine 70 and the boom 10. The rotation axis of the rotation cylinder 12 is oriented in the vertical direction, and the rotation cylinder 12 is attached so that the boom 10 can rotate in the horizontal direction. That is, the boom 10 is configured to be freely pivotable by rotation of the rotary cylinder 12. Note that the extension/contraction mechanism of the boom 10 is not limited to the structure described in this embodiment, as long as the boom 10 is configured to be extendable/contractable. Further, the turning mechanism of the boom 10 is not limited to the structure described in this embodiment as long as the boom 10 is configured to be able to turn freely. Furthermore, although the boom 10 does not have to have a telescopic configuration, if the boom 10 is rotatable and telescopic, the movable area of the workbench 40 can be further expanded, and the operator can The types of work that can be handled can be increased.

In the present embodiment, the boom 10 is attached to the saddle 72 of the pile press-in machine 70, but the boom 10 may be attached, for example, to the rotating part 74 of the pile press-in machine 70 instead of the saddle 72. If the boom 10 is attached to the swivel part 74, the work platform 1 will swivel as the swivel part 74 rotates, so depending on the work, the swiveling mechanism of the boom 10 can be omitted. Efficiency can be improved. However, since the work performed by the worker is mainly near the top of the pile, it is preferable that the boom 10 is attached to the saddle 72 closer to the top of the pile.

The link member 20 is attached to the tip of the boom 10 so as to be rotatable in the horizontal direction. The link member 20 attached to the boom 10 extends in the horizontal direction, and a undulating arm 30, which will be described later, is attached to the tip thereof. Note that "the link member 20 is horizontally rotatable" refers to a state in which the link member 20 is rotatable so that the angle formed between the boom 10 and the link member 20 can be easily adjusted when the work scaffold 1 is used. In addition, although the link member 20 can be rotated when the work scaffold 1 is not in use, the angle between the boom 10 and the link member 20 is fixed at a predetermined angle when the work scaffold 1 is in use. shall be. The "predetermined angle" is an angle that is changed as appropriate depending on the work performed on the pile moving device.

If the link member 20 is rotatably attached to the boom 10, the movable area of the workbench 40 is expanded, and the effect of improving work efficiency during construction can be enhanced. On the other hand, FIG. 7 shows an example in which the boom 10 and the link member 20 are fixed at a predetermined angle (90 degrees in FIG. 7). In the case where the boom 10 and the link member 20 are fixedly attached, for example, a manual link mechanism is employed at the connection between the boom 10 and the link member 20 so that the fixed angle can be changed without using power or the like. According to this manual linkage, the angle between the boom 10 and the link member 20 remains fixed when the work scaffold 1 is in use, but the angle between the boom 10 and the link member 20 can be changed when the work scaffold 1 is not in use. can. In the field of pile moving devices, even if the angle between the boom 10 and the link member 20 is fixed, the work scaffold 1 is equipped with a rotating mechanism of the boom 10, a rotating mechanism of the hoisting arm 30, which will be described later, and the operation. By providing a rotation mechanism for the table 40, etc., it is possible to sufficiently improve workability during construction. In addition, since there is no need to provide a mechanism that requires power, such as a rotating cylinder, at the connection between the boom 10 and the link member 20, a drive device such as a motor is not required, and the work platform 1 can be simplified, made lighter, and It becomes possible to obtain the effect of reducing manufacturing costs.

The up-and-down arm 30 is attached to the tip of the link member 20 so as to be able to move up and down and rotate in the horizontal direction. The undulating arm 30 of this embodiment includes a first parallel link mechanism 31, a second parallel link mechanism 32, and a telescoping cylinder 33. The first parallel link mechanism 31 includes first rod members 31a that are vertically arranged in parallel, and a second rod member 31b that connects the ends of each of the first rod members 31a. Each of the first rod members 31a has the same length, and each of the second rod members 31b has the same length. Further, the length of the first rod member 31a is longer than the length of the second rod member 31b.

Similarly, the second parallel link mechanism 32 includes first rod members 32a that are vertically arranged in parallel, and a second rod member 32b that connects the ends of each of the first rod members 32a. Each first rod member 32a has an equal length, and each second rod member 32b has an equal length. Further, the length of the first rod member 32a is longer than the length of the second rod member 32b.

Further, the lengths of the first rod member 31a of the first parallel link mechanism 31 and the first rod member 32a of the second parallel link mechanism 32 are equal to each other, and the lengths of the second rod member 31b of the first parallel link mechanism 31 and the second rod member 32a of the second parallel link mechanism 32 are equal to each other. The second rod members 32b of the link mechanism 32 are equal to each other.

The first parallel link mechanism 31 and the second parallel link mechanism 32 are arranged parallel to each other at intervals along the rotation direction of the boom 10. The first rod member 31a on the upper side of the first parallel link mechanism 31 and the first rod member 32a on the upper side of the second parallel link mechanism 32 are connected to each other at their boom side ends by the first pin member 34, and the workbench side The ends are connected to each other by a second pin member 35. The first rod member 31a on the lower side of the first parallel link mechanism 31 and the first rod member 32a on the lower side of the second parallel link mechanism 32 are connected to each other at their boom side ends by a third pin member 36, and The base side end portions are connected by a fourth pin member 37.

The telescopic cylinder 33 is provided between the first parallel link mechanism 31 and the second parallel link mechanism 32. Both ends of the telescopic cylinder 33 are fixed by two diagonally located pin members among the first to fourth pin members. In the case of this embodiment, the end of the telescopic cylinder 33 on the boom side is fixed by the third pin member 36, and the end of the telescopic cylinder 33 on the workbench side is fixed by the second pin member 35.

The undulating arm 30 of this embodiment is configured to be able to freely move up and down using the first parallel link mechanism 31, the second parallel link mechanism 32, and the telescopic cylinder 33 as described above. Thereby, the work platform 40 can be raised and lowered as shown in FIG. 8 and lowered as shown in FIG. 9 depending on the work performed by the worker. Note that the mechanism for raising and lowering the raising and lowering arm 30 is not limited to the structure described in this embodiment, as long as the raising and lowering arm 30 is configured to be able to raise and lower freely.

In this embodiment, a rotating cylinder 38 is provided at the connection portion between the link member 20 and the undulating arm 30 described above. The rotation axis of the rotation cylinder 38 is oriented in the vertical direction, and the rotation cylinder 38 is attached so that the undulation arm 30 can rotate in the horizontal direction. That is, the undulating arm 30 is configured to be freely pivotable by the rotation of the rotary cylinder 38. Note that the rotation mechanism of the undulating arm 30 is not limited to the structure described in this embodiment, as long as the undulating arm 30 is configured to be horizontally rotatable.

The workbench 40 is attached to the tip of the undulating arm 30 so as to be rotatable in the horizontal direction. In this embodiment, a rotating cylinder 41 is provided at the connection between the undulating arm 30 and the workbench 40. The rotation axis of the rotation cylinder 41 is oriented in the vertical direction, and the rotation cylinder 41 is attached so that the workbench 40 can rotate in the horizontal direction. That is, the workbench 40 is configured to be rotatable by the rotation of the rotary cylinder 41. Note that the rotating mechanism of the workbench 40 is not limited to the structure described in this embodiment as long as the workbench 40 is configured to be horizontally rotatable.

The workbench 40 according to the present embodiment is provided with an operation unit 50 that performs operations for moving the workbench 40, such as extending/contracting and rotating the boom 10 and rotating the hoisting arm 30. A worker on the workbench 40 can operate the operation unit 50 to move the workbench 40 to a position suitable for the work he or she is doing. The operation unit 50 does not need to be provided on the workbench 40. For example, the operation unit 50 may be a remote control, and the workbench 40 may be moved by remote control by a worker other than the worker on the workbench 40. Further, the workbench 40 according to the present embodiment is equipped with a welding machine 60, and the worker can perform welding work between the piles P on the workbench 40 in order to press-fit the piles P to a predetermined depth. can.

The work scaffold 1 according to this embodiment is configured as described above. According to this work scaffold 1, although the area in which the worker can walk is limited to the top of the workbench 40, the workbench 40 can be moved as shown in FIG. It can move into areas that cannot be moved on the work stage. Furthermore, since the distance between the pile press-in machine 70 and the workbench 40 and the orientation of the workbench 40 with respect to the pile press-in machine 70 can be changed freely, workers can perform tasks that were difficult to handle with conventional work stages. This makes it possible to improve workability during construction.

In particular, in the work scaffold 1, the link member 20 is provided between the boom 10 and the undulating arm 30, so that the effect of improving workability during construction is enhanced. For example, if the link member 20 is not provided between the boom 10 and the hoisting arm 30, the work platform 40 cannot approach the base of the boom 10 due to the structure in the swing area of the boom 10, as shown in FIG. There are areas where it is not possible. In the field of pile moving devices, if there is an area where the work platform 40 cannot get close to the base of the boom 10, the work that the worker should do is restricted, and this is not enough to improve workability during construction. is not obtained. In addition, in the work scaffold 1 according to the present embodiment, the work platform 40 can be brought closer to the pile press-in machine 70 side than in a device in which the link member 20 is not provided, so that the turning radius of the work scaffold 1 as a whole can be reduced. Can be made smaller. This makes it easier to avoid obstacles, such as utility poles, when the pile press-in machine moves forward or backwards. In addition, in the conventional work stage, it was necessary to partially dismantle the work stage during corner construction, but in the work scaffold 1 according to the present embodiment, the boom 10 can be rotated to a position that does not interfere with corner construction. Since the work platform 40 can be moved, dismantling the work scaffold 1 is not necessary.

In addition, although the working scaffold 1 was attached to the pile press-in machine 70 which is an example of a pile moving device in this embodiment mentioned above, the pile moving device is not limited to the pile press-fitting machine 70. Other pile moving devices include, for example, a crane 80 that suspends a pile P as shown in FIG. 12, and a power source conveying device 90 that conveys a power source for a pile press-in machine 70. The work scaffold 1 may be attached to these pile moving devices. Figure 12 shows an example in which the work scaffold 1 is attached to the pile press-in machine 70 and the crane 80, but if the work scaffold 1 is also attached to the crane 80 in this way, the area in which the worker can move will be further expanded. It can be moved to any position in the front-back direction in a press-fit system in which a pile moving device is connected. This makes it possible to perform tasks that cannot be handled with conventional stage structures.

Further, the work scaffold 1 may be attached to the left side of the pile moving device instead of the right side, or may be attached to both the right side and the left side. The work scaffold 1 is attached to at least one of the right side and the left side of the pile moving device depending on the work to be performed by the worker and the presence of obstacles around the pile moving device. Further, when attaching the work scaffold 1 to the pile moving device, it may be attached by a method that is not easy to attach and detach, such as welding, or it may be attached detachably, such as by fixing with bolts. Although it is possible to obtain the effects described in the above embodiment regardless of whether the work scaffold 1 is removably attached to the pile moving device, the work When the scaffold 1 breaks down, it can be easily replaced with another new work scaffold 1, and the construction work can be restarted promptly. Furthermore, if the pile moving device is provided with a plurality of attachment portions for the work scaffold 1 (for example, on the right side and left side), the attachment portion can be selected depending on the site situation.

Although an example of the embodiment of the present invention has been described above, the present invention is not limited to this example. It is clear that those skilled in the art can come up with various changes or modifications within the scope of the technical idea described in the claims, and these naturally fall within the technical scope of the present invention. It is understood that it belongs to

The present invention can be applied to a pile moving device such as a pile press-in machine that press-fits a pile into the ground.

1 Working scaffold for pile moving device 10 Boom 11 Telescopic cylinder 12 Rotating cylinder 20 Link member 30 Lifting arm 31 First parallel link mechanism 31a First rod member 31b Second rod member 32 Second parallel link mechanism 32a First rod member 32b Second rod member 33 Telescopic cylinder 34 First pin member 35 Second pin member 36 Third pin member 37 Fourth pin member 38 Rotating cylinder 40 Workbench 41 Rotating cylinder 50 Operating section 60 Welding machine 70 Pile press-in machine 71 Clamp 72 Saddle 73 Slide part 74 Swivel part 75 Chuck 76 Lifting body 80 Crane 90 Power source transport device P Pile

Claims (4)

A working scaffold for a pile moving device that is installed on a pile moving device that moves on an existing pile and serves as a foothold when working around the existing pile,
a swingable boom attached to at least one of the right side and left side of the pile moving device;
a horizontally rotatable link member attached to the tip of the boom;
an erecting arm attached to the tip of the link member, which is movable in erecting and rotatable in a horizontal direction;
A working scaffold for a pile moving device, comprising: a horizontally rotatable work platform attached to the tip of the undulating arm. The working scaffold for a pile moving device according to claim 1, wherein the link member is fixedly attached to the boom at a predetermined angle. The working scaffold for a pile moving device according to claim 1 or 2, wherein the pile moving device is a pile press-in machine. The working scaffold for a pile moving device according to claim 3, wherein the boom is attached to a saddle of the pile press-in machine.

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