JP7120747B2 - scaffolding material for pier - Google Patents

Description

TECHNICAL FIELD The present invention relates to a scaffolding material for a pier, which is used when constructing scaffolding on a pier.

Conventionally, when performing work such as repair and inspection on a pier or railway bridge, for example, as disclosed in Patent Document 1, by assembling scaffolding on the lateral side or the lower side of the superstructure, workers can A work space may be secured in a place where it is difficult to roam freely or in an inaccessible place.

JP 2017-53190 A

By the way, when assembling a conventional scaffolding, generally, a plurality of long pipes (so-called single pipes) and clamps for connecting the pipes are used as scaffolding materials. When carrying out work on supporting piles for supporting the superstructure above water areas (rivers, seas, etc.), a scaffolding foundation is built on the superstructure with pipes and clamps, and pipes are added to the foundation. The scaffolding is extended around the supporting piles.

In this way, when assembling a scaffold using pipes and clamps, a place to serve as a foundation is required, so the scaffolding is started to be assembled from a place away from the support piles that serve as the work place. Therefore, there is a problem that it takes a lot of time from the start of assembling the scaffolding to the start of work on the supporting piles.

In addition, when the scaffolding is started, the installed pipe cannot be immediately used as a scaffolding, which also causes the scaffolding assembly work to take a long time.

Therefore, in view of such circumstances, it is an object of the present invention to provide a scaffolding material for a pier that can be used as a scaffold immediately after installation.

The scaffolding material for a pier of the present invention is formed integrally with a detachable band portion that can be detached from a support pile that extends above the water surface while being driven into the ground of a water area, and the detachable band portion. three or more footstool arm portions extending radially outward from the detachable band portion, the footstool arm portion allowing a worker to get on, the detachable band portion being attached to the support pile. It has a plurality of split bands arranged along the outer peripheral surface.

In the scaffolding material for a pier configured as described above, when the supporting piles are tightened by the removable band section, each step arm section integrally formed with the removable band section faces outward from the removable band section (from the supporting pile). Since the footrest arm extends radially, a worker can get on the footrest arm.

Therefore, in the scaffolding material for the pier, the step arm portion can be used as a scaffolding when the support pile is tightened by the detachable band portion.

In the scaffolding material for a pier of the present invention, the detachable band portion is formed with four step arm portions, and the four step arm portions are arranged at equal or substantially equal intervals around the support pile. It may be configured to be

With this configuration, the footrest arms are arranged at equal intervals around the support piles, making it easier for the operator to move around the support piles.

Moreover, in the scaffolding material for a pier of the present invention, the upper surface of the step arm portion may be flat.

By doing so, it becomes easier for the operator to maintain balance when standing on the step arm.

Further, the scaffolding material for a pier of the present invention may be provided with a holder provided at the tip of the step arm portion and capable of holding the columnar material.

In this way, a columnar material such as a pipe can be attached to the tip of the step arm, so that the scaffolding material can be used as a base for assembling the scaffolding material on the scaffolding material.

As described above, according to the scaffolding material of the present invention, an excellent effect can be obtained in that it can be used as a scaffold immediately after installation.

FIG. 1 is a plan view of a scaffolding material according to one embodiment of the present invention. FIG. 2 is a front view of the scaffolding material according to the same embodiment. In FIG. 3, (a) is an enlarged view of the area near the connecting piece, and (b) is an enlarged view of the area near the holder. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 5 is a plan view of the scaffolding material according to the embodiment in use. FIG. 6 is a plan view of the scaffolding material according to the embodiment in use, and is a plan view of a state in which footboards are installed on the step arms. FIG. 7 is a side view of the scaffolding material according to the embodiment in use, and is a side view of a state in which the scaffolding is assembled to the scaffolding material.

A scaffolding material for a pier (hereinafter referred to as a scaffolding material) according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

Scaffolding materials are used when constructing scaffolding on a pier, which is a type of building. The pier has support piles that extend above the water surface while being driven into the ground of a water area (for example, riverbed or seabed ground), and a superstructure built on the support piles. The supporting pile is a cylindrical pile (so-called steel pipe pile).

The scaffolding material according to this embodiment is configured to be installed on the support piles of the pier,
As shown in FIGS. 1 and 2, a detachable band portion 2 that can be attached to and detached from a support pile S1 (see FIG. 2), a fixture 3 that fixes the detachable band portion 2 while attached to the support pile S1, and the Three or more footstool arm parts 4 formed integrally with the removable band part 2 and extending radially outward from the removable band part 2, the footstool arm parts on which a worker can ride. 4, a holder 5 provided at the tip of the footrest arm portion 4, and a protective sheet 6 arranged between the support stake S1 and the removable band portion 2. As shown in FIG.

As shown in FIG. 1, the detachable band portion 2 has a plurality of divided bands 20 arranged along the outer peripheral surface of the support pile S1. Note that the detachable band section 2 according to this embodiment has two split bands 20 .

The split band 20 has a curved belt portion 200 curved in an arc shape, and a pair of connecting piece portions 201 formed at each end portion of the curved belt portion 200 in the curved circumferential direction.

The curved belt portion 200 is arranged with its inner peripheral surface directed toward the outer peripheral surface of the support pile S1.

The connecting piece portion 201 is formed to extend outward from the short side of the curved belt portion 200 . Also, the vertical width of the curved belt portion 200 and the vertical width of the connecting piece portion 201 are set to be the same or substantially the same (see FIG. 2). Furthermore, a through hole 201a is formed in the connecting piece portion 201 so as to penetrate in the thickness direction (see FIG. 3A).

In the split band 20, in a state in which the curved band portion 200 is arranged with the inner peripheral surface facing the outer peripheral surface side of the support pile S1, the connecting piece portion 201 is spaced from the connecting piece portion 201 of the adjacent divided band 20. are configured to face each other with a gap between them.

Further, in a state in which the connecting pieces 201 of the adjacent split bands 20 face each other, the through holes 201a are arranged at corresponding positions.

The fixture 3 is configured so that the interval between the connecting piece portions 201 can be narrowed in a state where the connecting piece portions 201 arranged to face each other are connected.

In addition, as shown in FIG. 3A, the fixture 3 according to the present embodiment is composed of a bolt 30 and a nut 31, and the through holes 201a of the connecting piece portions 201 arranged to face each other. By inserting the bolt 30 and screwing the nut 31 onto the tip of the bolt 30, the two opposing connecting pieces 201 can be connected. Further, if the nut 31 is tightened to the tip of the bolt 30, the distance between the two connecting pieces 201 is narrowed, so that the curved band 200 of each split band 20 can tighten the outer peripheral surface of the support pile S1. It's becoming

As shown in FIG. 1, the scaffolding material 1 according to this embodiment has four step arm portions 4, and two step arm portions 4 are formed on one divided band 20. As shown in FIG.

The footrest arm portions 4 are arranged at equal or substantially equal intervals in the circumferential direction along the outer peripheral surface of the support pile S1 in a state where the detachable band portion 2 is attached to the support pile S1. Note that the footrest arm portions 4 according to the present embodiment are arranged at intervals of 90 degrees in the circumferential direction.

Further, the step arm portion 4 is formed at a position shifted from the midpoint of the curved belt portion 200 to one end side, and at a position shifted from the midpoint of the curved belt portion 200 toward the other end side. . More specifically, the footrest arm portion 4 extends from the midpoint of the curved belt portion 200 formed in a semicircular shape as a base point by a distance corresponding to about one-fourth of the total length (curved belt portion 200). and a position shifted toward the other end. Also, the pair of footrest arm portions 4 are formed so as to line up at intervals of about 45 degrees.

As shown in FIG. 4, the footrest arm portion 4 has a strip-like upper wall portion 40, one short side of which is integrally connected to the outer peripheral surface of the curved strip portion 200; 40 and extending outward from the outer peripheral surface of the curved band 200; 42 and a strip-shaped lower wall portion 43 located below the upper wall portion 40 .

The upper wall portion 40 is integrally connected to the outer peripheral surface of the curved band portion 200 so that both surfaces face in the vertical direction. The upper wall portion 40 may be integrally connected to the outer peripheral surface of the curved belt portion 200 by welding or the like.

The lower receiving wall portion 41 is integrally formed with the upper wall portion 40 and the curved belt portion 200 . The lower receiving wall portion 41 extends over the entire length of the upper wall portion 40 in the longitudinal direction, and is formed to hang straight downward from the lower surface of the upper wall portion 40 .

Note that the step arm portion 4 according to the present embodiment is formed in a rectangular tube shape, and individual lower receiving wall portions 41 are formed for each long side of the upper wall portion 40 .

The tip wall portion 42 is a portion that constitutes the tip surface of the step arm portion 4 .

The lower wall portion 43 is also integrally connected to the outer peripheral surface of the curved band portion 200 so that both surfaces thereof face in the vertical direction, and is formed so as to be continuous with the lower ends of the pair of lower receiving wall portions 41 . there is

The holder 5 is configured to be able to hold a columnar object (for example, a single tube, etc.) and to be relatively rotatable with respect to the step arm portion 4 . Note that the step arm portion 4 is rotatable in the circumferential direction about the axial direction of the step arm portion 4 .

As shown in FIG. 3B, the holder 5 according to the present embodiment includes a rotating shaft portion 50 extending from the tip of the step arm portion 4, and a rotating shaft portion 50 provided to be rotatable with respect to the rotating shaft portion 50. and a holder body 51 .

The rotating shaft portion 50 is formed to extend from the tip of the step arm portion 4 along the extending direction.

The holder main body 51 has a pair of holding portions 510 that are connected so as to be able to be opened and closed. is provided.

Therefore, the holder main body 51 can pinch (hold) a columnar object by closing the pair of pinching portions 510, and rotate the pair of pinching portions 510 in the circumferential direction around the axis of the rotating shaft portion 50. , the direction of the clamped columnar object can be changed.

The protective sheet 6 may be configured to have elasticity, and may be configured from, for example, a rubber sheet.

The configuration of the scaffolding material 1 according to this embodiment is as described above. Next, how to use the scaffold material 1 will be described with reference to the accompanying drawings. In this embodiment, the method of using the scaffolding material 1 will be described by taking as an example scaffolding on the support piles S1 of a pier built in a river or sea area.

In order to install the scaffold material 1 on the support pile S1, first, the split band 20 is brought close to the support pile S1 to be worked. Although the split band 20 can be carried manually, a ship or the like may be used.

Then, after a protective sheet 6 is wound around the outer peripheral surface of the support pile S1 (where the scaffolding material 1 is installed on the water surface), two split bands 20 are arranged so as to surround the outer peripheral surface of the support pile S1. The split band 20 is arranged such that the inner peripheral surface of the curved band portion 200 is applied to the outer peripheral surface of the support pile S1, and the connecting piece portion 201 faces the connecting piece portion 201 of the adjacent divided band 20. are arranged around the support pile S1.

Subsequently, the connecting piece portions 201 arranged to face each other are connected with a connecting tool. In this embodiment, by inserting the bolt 30 through the through hole 201a of each of the connecting piece portions 201 facing each other and screwing the nut 31 onto the tip portion of the bolt 30, the two connecting piece portions 201 facing each other are connected. concatenate

Further, when the nut 31 is tightened to the tip of the bolt 30, the distance between the two connecting pieces 201 is narrowed, and the curved band 200 of each split band 20 tightens the outer peripheral surface of the support pile S1.

When the detachable band portion 2 is attached to the support pile S1 in this manner, each step arm portion 4 integrally formed with the detachable band portion 2 is attached to the detachable band portion 2 as shown in FIG. Since it extends radially outward (from the support pile S1), a worker can get on the step arm portion 4. As shown in FIG.

As described above, according to the scaffolding material 1 according to the present embodiment, when the support pile S1 is tightened by the removable band portion 2, each step arm portion 4 formed integrally with the removable band portion 2 is detached. Since the band portion 2 (from the support pile S1) extends radially outward, a worker can get on the step arm portion 4. As shown in FIG. Therefore, in the scaffold material 1 for a pier, when the detachable band part 2 is attached to the support pile S1 (at the time of installation), the step arm part 4 can be used as a scaffold for subsequent work.

Therefore, the scaffolding material 1 can be used as a scaffold immediately after installation.

In addition, since the four step arm portions 4 are arranged in the detachable band portion 2 at equal intervals or approximately equal intervals in the circumferential direction along the outer peripheral surface of the support pile S1, the step arm portions 4 are arranged around the support pile S1. The even or nearly even spacing makes it easier for the operator to move around the support pile S1.

In addition, since both sides of the strip-like upper wall portion 40 of each step arm portion 4 face in the vertical direction, the upper surface of each step arm portion 4 is flat. Therefore, when the operator stands on the step arm portion 4, it becomes easier to keep his/her balance.

Furthermore, in each step arm portion 4, the lower receiving wall portion 41 is formed so as to hang straight downward from the lower surface of the upper wall portion 40, so that when a load is applied from above the step arm portion 4, In addition, the step arm portion 4 can be prevented from being bent or broken.

Further, the step arm portion 4 of the present embodiment has a position shifted from the midpoint of the curved belt portion 200 to one end side, and a position shifted from the midpoint of the curved belt portion 200 toward the other end side. Specifically, the center point of the curved belt portion 200 formed in a semicircular shape is used as a base point, and the position is shifted toward one end by a distance corresponding to about a quarter of the total length (curved belt portion 200). , and a position shifted toward the other end side, it is possible to suppress the load generated on the connecting piece portion 201 when a load is applied to the step arm portion 4 .

Therefore, in the scaffolding material 1 according to the present embodiment, as described above, the step arm parts 4 can be arranged around the support pile S1 at equal intervals, and the connecting parts of the split bands 20 can be prevented from being damaged. can also

In the scaffolding material 1 according to this embodiment, the protective sheet 6 having elasticity is wrapped around the outer peripheral surface of the support pile S1, and the support pile S1 is tightened by the removable band portion 2 from above the protective sheet 6. Damage to the support pile S1 due to contact between the portion 2 and the support pile S1 can be prevented.

Further, when a load is applied to the footrest arm portion 4, the lower end side of the split band 20 (curved band portion 200) bites into the protective sheet 6, thereby preventing positional deviation of the detachable band portion 2 with respect to the support pile S1.

In addition to being able to be ridden by a worker, the footboard arm portion 4 can also be used to place other materials such as footboards M1 as shown in FIG. Further, since a holder 5 capable of holding the columnar material M2 such as a single tube is provided at the tip of the step arm portion 4, if the columnar material M2 is held by each holder 5, as shown in FIG. Alternatively, it is possible to build a scaffold based on the scaffolding material 1.

The scaffolding material of the present invention is not limited to the one embodiment described above, and of course various modifications can be made without departing from the gist of the present invention.

In the above embodiment, the detachable band portion 2 is configured to have two divided bands 20, but is not limited to this configuration. For example, the removable band section 2 may be configured to have three or more split bands 20 .

In the above embodiment, the fixture 3 is composed of the bolt 30 and the nut 31, but is not limited to this configuration. If the space between the connecting piece portions 201 can be narrowed in a state in which the connecting piece portions 201 arranged opposite to each other are connected, the fixture 3 can, for example, collectively sandwich the connecting piece portions 201. A clamp or the like may be used.

In the above-described embodiment, the scaffolding material 1 is configured to have four footboard arm portions 4, but is not limited to this configuration. For example, the scaffold material 1 may be configured to have three footstool arm portions 4 or five footstool arm portions 4 .

In the above-described embodiment, one split band 20 is formed with two step arm portions 4, but the present invention is not limited to this configuration. For example, the plurality of divided bands 20 may include those without the step arm portions 4 formed thereon, or one divided band 20 may be formed with three or more step arm portions 4 .

Although not specifically mentioned in the above embodiment, the footrest arm portion 4 may be composed of, for example, a square pipe. Further, if the upper wall portion 40 on which the worker can ride and the lower receiving wall portion 41 that supports the load of the worker on the lower side of the upper wall portion 40 can be configured, other than the square pipe, for example, angle material, H It may also consist of steel, channels or the like.

REFERENCE SIGNS LIST 1 scaffolding material 2 detachable band portion 3 fixture 4 step arm portion 5 holder 6 protective sheet 20 split band 30 bolt 31 nut 40 upper wall portion , 41... Lower receiving wall portion 50... Rotating shaft portion 51... Holder main body 200... Curved band portion 201... Connection piece portion 201a... Through hole 510... Clamping portion M1... Walking board M2... Column shape Material, S1... support pile

Claims (3)

A detachable band portion that is detachable from the support pile that extends above the water surface while being driven into the ground of the water area;
three or more footstool arm parts integrally formed with the detachable band part and extending radially outward from the detachable band part, the footstool arm parts on which a worker can get on;
a holder attached to the tip of the step arm,
The detachable band portion has a plurality of split bands arranged along the outer peripheral surface of the support pile ,
The holder is
a rotating shaft portion extending from the tip of the step arm portion;
a holder body capable of holding columnar materials for scaffolding and rotatable with respect to the rotating shaft;
Scaffolding materials for piers. Four step arm portions are formed in the detachable band portion,
The scaffolding material for a pier according to claim 1, wherein the four footboard arm portions are arranged at equal intervals or approximately equal intervals around the supporting piles. The scaffolding material for a pier according to claim 1 or 2, wherein an upper surface of the step arm portion is flat.

Images