JP2516395Y2 - Bridges at construction sites - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is a construction for straddling obstacles such as pressure-feeding hoses and electric wires of a concrete pump truck that crosses a sidewalk at a construction site. Regarding bridges in the field.

[Conventional technology]

In general, when an obstacle such as a hose or an electric wire is pulled into a construction site across a sidewalk, etc., make sure to cross the obstacle to avoid the risk of injury to people passing by the sidewalk due to this obstacle. A bridge is set up across the road to allow people to safely pass over the bridge.

As a bridge of this kind of construction site, etc., (a) as described in Japanese Utility Model Laid-Open No. 63-37758, a base with relatively short legs and foldable legs on the bottom, and a base It is known that one chain is connected to each of the front and rear sides by a hinge so that the chain can be folded and stored compactly.

(B) Further, a combination worktable with an inclined surface for easily carrying a luggage carrier or the like is disclosed in Japanese Utility Model Publication No. 59-73402. The workbench of (b) includes a plurality of slanting bases whose front end is slanted around a horizontal base around the horizontal base, and a double slanting base having a slope and arranged at a corner. It is to be assembled in an appropriate size. That is, by changing the vertical length and the horizontal length of the horizontal base, the number of the tilting bases and the double tilting bases arranged in a row on the outer periphery of the horizontal base is changed to form a workbench of an arbitrary size. Is what you can do.

[Problems to be solved by the device]

However, the bridge of the above-mentioned conventional example (a) is composed of only three bodies, one of which is a base and one chain that is connected to both front and rear sides. Therefore, the bridge is formed with three bodies and the bridge installation surface such as the ground. If the allowable storage area for obstacles is constant and the number of obstacles such as hoses and electric wires that should be bridged is large, the obstacles such as hoses and electric wires cannot be accommodated within the allowable area and cannot be installed as a bridge. There was a point. It was not possible to connect the base and the chain infinitely in the vertical direction crossing the obstacle.

Moreover, when a bridge is installed long in the lateral direction (for example, when the width of the sidewalk is wide and it is necessary to install the bridge corresponding to the width), in the conventional example (a), a plurality of bridges are simply installed in the lateral direction. If you use it for a long time, there will be a gap between the bridges due to the vibration of people or bicycles passing over the bridge, and carelessly drop your feet or bicycle tires etc. into this gap. There was a risk of injury to passers-by.

The workbench of the conventional example (b) is designed so that a luggage carrier or the like can be easily placed thereon, and does not straddle obstacles such as hoses and electric wires as in the case of the present invention. That is, in the case of (b), the work benches of different areas can be formed by increasing or decreasing the number of the horizontal bases and the tilt bases and then adding the double tilt bases, and the tilt bases and the double tilt bases can be tilted. By the action of the surface, the luggage carrier etc. can be placed from any direction.

This (b) does not disclose that the horizontal bases are connected in the horizontal direction. Even if the horizontal bases are arranged side by side in the horizontal direction, as described above, there is a gap between the horizontal bases. Occurs, and there is a problem that the safety of passersby is lacking.

The present invention aims to provide a bridge for a construction site or the like that solves the above problems.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention can arrange the parent chain and the child chain in tandem on both front and rear sides of the base, and connect the other base to one or both of the left and right sides of the base. A bridge at a construction site, etc., in which the parent chain and the child chain can be appropriately arranged in rows on the front and rear sides of each base as described above. It has both side walls, height adjustment and legs are erected on the back of the four corners, and one side wall of each of the front and rear side walls and the left and right side walls is provided with an engagement receiving portion, and the left and right side walls On the other side, a quadrangular base provided with an engaging portion; and on the front side wall, an engaging portion that is engageably and disengageably engaged with an engagement receiving portion of a front side wall or a rear side wall of the base. It has an engagement receiving part on the rear side wall and can be at least lower than the legs of the base on the rear back surface. A parent chain, which is a rectangular chain formed by vertically arranging height-adjustable legs; releasably engaged with an engagement receiving portion of the front side wall or rear side wall of the base or the rear side wall of the parent chain And an appropriate number of child chain bodies each having a square chain body having a rear end rear surface that is grounded on the floor surface. Characterize.

The shape of the base is arbitrary, such as a square or a rectangle, and the chain bodies (parent chain body and child chain body) can be appropriately changed in shape corresponding to the shape of the base frame.

The chain is composed of at least one parent chain connected to the base and at least one child chain connected in a chain to the parent chain or the base.

At least one of the left and right sides of the base is connected to one or more other bases by engagement by engaging means, and a parent chain and a child chain are provided on both front and rear sides of each base. Can be arranged in rows in appropriate combinations as described above.

The engaging means provided on the base includes an engaging hole as an engagement receiving portion formed on one of the front and rear side walls and one of the left and right side walls of the base, and an engaging portion provided on the other of the left and right side walls. The parent chain body and the child chain body are both rectangular in shape, and a pin serving as an engaging portion serving as an engaging means is provided on the front side wall of both.

[Action]

According to this invention with the above-mentioned configuration, when an obstacle such as a hose or an electric wire is pulled across a sidewalk or the like into a construction site, etc., the width or width of the obstacle is adjusted to match the width or width of the sidewalk. Then, the bridge is assembled by appropriately engaging the base and the base or the engaging means of the base and the chain and arranging them in the optimal vertical width in a row or in the optimal lateral width in a row. At this time, by adjusting the height of the base and the legs provided on the parent chain, the bridge is placed over the obstacle at the optimum height, and a person's bicycle is safe on the bridge. You can pass to.

And, for example, when there are no obstacles such as hoses and electric wires at the end of construction and the bridge is no longer needed,
After disassembling and disassembling the base and the base or the base and the chain by the engaging means, the base and the chain can be individually separated and easily transported, and when storing The base and chain can be stacked and stored compactly.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

The bridge at the construction site according to the present invention is used, for example, as shown in FIG. 9 or FIG. That is,
A parent chain (11) and a child chain (1) on the front and back sides of the base (1)
9) can be arranged in tandem in an appropriate combination, and one or the other of the left and right sides of the base (1) is connected to another base, and the parent chain (11) is connected to the front and back sides of each base (1) ... (1). ) And the child chain (19) can be arranged in rows by appropriately combining them as described above. The bridge shown in FIG. 9 has a chain (10) as a child chain (19) connected to the front side of the base (1) and a chain (10) connected to the rear side of the base (1).
The barrel chain (11) is connected, and the chain chain (10) and the child chain (19) are connected to the rear side of the parent chain (11).

FIG. 11 shows a structure in which one column is arranged in two columns as shown in FIG. 9 and two columns are arranged in parallel, and one column is increased in the horizontal direction. This bridge is not limited to the one shown in FIGS. 9 and 11, but an appropriate number of bases (1) and chain bodies (10) are connected to each other,
It is possible to assemble a bridge adapted to the size of a hose or an electric wire, which is an obstacle (S), or the width of a sidewalk.

The bridge at the construction site, etc. has a horizontal top surface (1b) and front and rear side walls (2), (3) and left and right side walls (4) on the outer periphery.
(5) having vertically adjustable legs (8) ... (8) on the back surface (1a) of the four corners, and front and rear side walls (2),
(3) and the left and right side walls (4) and (5) are provided with engagement receiving portions (6) on their respective side walls, and the left and right side walls (4) and (5) are provided with engagement portions (6). A rectangular base (1) provided with 7); releasably engaged with an engagement receiving portion (6) of the front side wall (2) or the rear side wall (3) of the base (1) The engaging part (15) is provided on the front side wall (12a), the engaging side receiving part (16) is provided on the rear side wall (12b), and the rear surface (12c) has a base (1).
A parent chain body (11) which is a rectangular chain body (10) formed by vertically arranging a height adjustable leg (13) which can be at least lower than the leg (8) of the base; 2) or the rear wall (3) or the rear side wall (12b) of the parent chain (11), the engagement receiving portion (6),
A rectangular shape having an engaging portion (15) engageably and disengageably engaged with (16) on a front side wall (19a) and a rear end rear surface (19a) that contacts the floor surface. It has an appropriate number of chain bodies (10) and child chain bodies (19).

As a specific example of the tandem arrangement, one or more parent chain (11) is connected to each of the front and rear sides of the base (1), and the child chain is connected to the final end side of the parent chain (11). Body (19)
The base (1), the parent chain (11) and the child chain (19) can be arranged in tandem by connecting to each other; one or more parent chains on one side of the front and back of the base (1). The body (11) and one child chain (19) are connected to each other, and the other side is connected with the parent chain (11) and one child chain (19) in the number reduced by one or more from the one side. Can be connected and arranged in tandem; one or more parent chain (11) and one child chain (19) are connected to one side of the base (1) on the front and back sides, and the parent chain is connected to the other side. Only one child chain (19) can be connected and arranged in tandem without providing the body (11); and child chains without the above parent chain (11) on the front and rear sides of the base (1) respectively. Only the bodies (19) can be connected and arranged in tandem.

As shown in FIGS. 1 and 2, the base (1) has a quadrangular shape, and the front and rear side walls (2), (3) and the left side wall (4) of the base (1) have a large diameter portion ( 6a) and a small diameter portion (6b) are continuously formed to form a pair of engagement receiving portions (6) which are dharma-shaped engaging means. Further, the right side wall (5) has a fitting hole (5a),
(5a) is formed, and the insertion holes (5a) and (5a) each have a pin-like end portion having a collar portion (7a) having a diameter smaller than that of the large diameter portion (6a) and larger than that of the small diameter portion (6b). The base end (7b) of the engaging portion (7) serving as the engaging means is fitted and fixed, and the base end (7b) is fixed to a guide plate (9) described later by means such as welding. Of course, the base end (7b) of the engaging portion (7) may be directly fixed to the right side wall (5). The engagement portion is not limited to the shape of the above-described embodiment, but the design can be changed as appropriate such as an L-shaped hook.

The upper part of the leg (8) is fixed to each of the four corners on the back surface (1a) side of the base (1), and the leg body (8a) of the leg (8) and the back surface of the base (1) are fixed. A guide plate (9) is fixed to (1a) to firmly fix the leg (8) to the base (1). The guide plate (9) is not essential.

As shown in FIGS. 7 and 8, the leg (8) has a nut (8b) internally fitted and fixed to the lower portion of a tubular leg body (8a), and a bolt-shaped leg portion is fixed to the nut (8b). (8c) is screwed. According to the leg (8) having such a structure, by rotating the leg (8c) and moving the leg (8c) up and down with respect to the leg body (8a), the leg (8c) is shortened as shown in FIG. 7, for example. As shown in Fig.8, the height of the legs (8) can be finely adjusted so that the base (1) can be stably installed on the installation surface and the back surface (1a) of the base (1) can be installed. It is possible to adjust the distance (space M) between the ground contact surface and the ground contact surface to adapt to the height of an obstacle accommodated in the space (M). Although not shown, a plurality of fixed rod insertion holes are provided in the leg portion in the vertical direction of the tubular leg body.
After each of the two engaging holes is formed and the leg portion is inserted into the leg body, an appropriate desired fixing rod insertion hole of the leg body is aligned with the engaging hole of the leg portion, and the fixing rods are attached to the both holes. By inserting, the length of the leg formed by the leg body and the leg portion can be adjusted.

As shown in FIGS. 3 to 6, the chain body (10) is composed of two kinds of chain bodies, a parent chain body (11) and a child chain body (19). One or both of the chain bodies (19) are connected to each other to arrange them in a column having a desired length or in a row having a desired width.

The parent chain (11) has a front side wall (12a) and a rear side wall (12).
b) a flat plate (12) formed by bending back and forth, and a flat plate (1
The rear side of 2) consists of a pair of legs (13) with a slightly shortened leg body (13a) similar to the leg (8), and this leg (13) is also adjustable in height. You can do it. In the figure, (13c) is a leg.

Further, the front side wall (12a) of the parent chain (11) has a pin as an engaging means for engaging with an engagement receiving portion (6) as an engaging means of the rear side wall (3) of the base (1). While a pair of shaped engagement portions (15) are formed, an engagement receiving portion (16) similar to the rear side wall (3) of the base (1) is formed on the rear side wall (12b). The base ends (15b) and (15b) of the pin-shaped engaging part (15), which is the engaging means having the flange part (15a) at the tip part, are the reinforcing brackets (17) fixed to the back surface of the flat plate (12). ) And (17) are fixed to each other by welding or the like.

As shown in FIGS. 5 and 6, the child chain (19) has a rear side wall (12b) and a leg (13) in the parent chain (11).
Also, the engagement receiving portion (16) is eliminated, and other configurations are substantially the same as those of the parent chain (11).

When the base (1) and the chain (10) are arranged in tandem, for example, as shown in FIG. 9, the base (1) and the chain (10) are arranged.
Any number of parent chain (11) and / or child chain (19) may be connected as shown in FIG. That is, the engagement receiving portion (6) serving as the engaging means of the base (1) is engaged with the engaging portion (15) serving as the engaging means of the parent chain (11) to engage the parent chain (11). The chain member (1
It is preferable to engage the engaging portion (15) as the engaging means of 9), and in order to connect the chain body (10) for a long time, the child chain body (19) configured substantially the same as the parent chain body (11). Any number (not shown) may be sequentially connected to the upper side of the final child chain (19). Further, as shown on the left side of FIG. 9, the child chain (19) is attached to the engagement receiving portion (6) which is the engaging means of the base (1).
It is also possible to directly connect the both by engaging the engaging portion (15) which is the engaging means.

When other bases (1) are arranged in rows on the left and right sides of the base (1), the base (1) is, for example, as shown in FIGS. 11 to 13.
The engaging portion (7) or the engaging receiving portion (6) which is the engaging means formed on one or both side walls of the left and right sides of the side wall of the other base (1) is the engaging receiving portion (6) serving as the engaging means. Alternatively, the engaging portion (7) is engaged and connected. Then, the parent chain (11) and the child chain (19) are appropriately combined and arranged in rows on the front and rear sides of each base (1) as described above.

As described above, the base (1) and the parent chain (11) or the child chain (19), the parent chain (11) and the child chain (19), the base (1) and another base (1) In this embodiment, as shown in FIG. 10 and FIG. 13, the connection of the engagement receiving parts (6) and (16) of the base (1) or the parent chain (11) is made respectively. Large diameter part (6
a) and (16a), the parent chain (11) or the child chain (19) or the engaging part (7) of the other base (1), the collar part (7) of (15).
After inserting a) and (15a), engage receiving parts (6) and (16)
When they are engaged with the small diameter parts (6b) and (16b), they are connected without slipping out. When releasing this engagement, the engaging portions (7) and (15) are reversed in the opposite manner to the case of the engagement.
Should be removed from the engagement receiving portions (6) and (16).

According to the above-mentioned embodiment, when the bridge is no longer necessary, the engagement between the base and the base or the engagement between the base and the chain and the engagement receiving portion can be released. The chain and the chain can be individually separated and easily carried, and the base and the chain can be stacked and stored compactly.

[Effect of device]

As described above, according to the present invention, an appropriate number of bases, parent chains, and child chains are provided, and the parent chains and child chains are appropriately combined on the front and rear sides of the base, The chained bodies can be connected in series in a vertical direction through the base to be arranged in series, and at least one of the left and right sides of the base can be chained with one or more other bases by engagement by the engaging means. The base chain and the child chain are appropriately combined as described above on both front and rear sides of each base, and infinitely connected in the horizontal direction through the base, so that they can be arranged in rows. Alternatively, a bridge having a desired length can be freely provided in any lateral direction. Moreover, by adjusting the height of the legs provided on the base and the parent chain, not only the base and the parent chain but also the child chain can be adjusted in height (space) from the floor surface,
The space is obtained which is adapted to the height and width of the obstacle. Therefore, according to the length, width, and height of the obstacle, the base, parent chain, and child chain should be arranged vertically and horizontally as necessary, and the heights of the base and parent chain should be adjusted. By
It can handle all obstacles.

In other words, when pulling an obstacle such as a hose or an electric wire across a sidewalk, the base and base should be adjusted according to the vertical width of the obstacle and the width of the installation surface such as the sidewalk. Or, by combining and connecting the base and chain appropriately, it is possible to form a sufficient storage area for containing obstacles between the bridge and the installation surface of the construction site, etc. As well as being able to assemble a bridge that can be installed on a sidewalk or other installation surface, it is possible to provide a bridge for a construction site that has a significantly wider range of use than a conventional bridge for a construction site.

[Brief description of drawings]

Each of the figures shows an embodiment of this invention. 1 is a perspective view of the base, FIG. 2 is a bottom view of FIG. 1, and FIG.
Figure is an oblique view of the parent chain, Figure 4 is a bottom view of Figure 3, 5
Figure is an oblique view of the child chain, Figure 6 is a bottom view of Figure 5, Figure 7
FIG. 8 is a side sectional view showing the leg in a contracted state, FIG. 8 is a side sectional view showing the leg in an extended state, FIG. 9 is a perspective view of one usage example, and FIG. 10 is an engaging portion as an engaging means. FIG. 11 is a perspective view of another example of use, and FIG. 12 is a cross-sectional view showing an engagement state with an engagement receiving portion.
FIG. 13 is a vertical cross-sectional view of the drawing, and FIG. 13 is a vertical cross-sectional view showing an engaged state of an engaging portion which is an engaging means and an engaging receiving portion. (1) ... base, (6) ... engagement receiving portion (engagement means),
(7) ... Engaging part (engaging means), (10) ... Chain,
(11) …… Parent chain, (12c) …… Rear back, (15)…
... engaging portion (engaging means), (16) ... engaging receiving portion (engaging means), (19) ... child chain, (19c) ... rear end rear surface,
(M) ... space, (S) ... obstacle.

Claims (1)

(57) [Scope of utility model registration request] 1. A parent chain (11) and a child chain (19) can be appropriately arranged in tandem on both front and rear sides of a base (1), and one side or the other side of the base (1) Construction site where the bases are connected and the parent chain (11) and the child chain (19) can be arranged in rows on the front and rear sides of each base (1) ... (1) by appropriately combining them as described above. Etc., the upper surface (1b) is horizontal and has front and rear side walls (2), (3) and left and right side walls (4), (5) on the outer periphery, and the back surface (1
Height adjustable legs (8) ... (8) are hung on a), and front and rear side walls (2), (3) and left and right side walls (4),
(5) A quadrangular base provided with an engagement receiving portion (6) on one side wall of each side wall and an engagement portion (7) on the other side of the left and right side walls (4) and (5). (1) and; an engaging portion (15) releasably engaged with an engaging receiving portion (6) of the front side wall (2) or the rear side wall (3) of the base (1). 12a), the rear side wall (12b) has an engagement receiving portion (16), and the rear rear surface (12c) is at least lower than the legs (8) of the base (1) and the height is adjustable. A parent chain (11) which is a rectangular chain (10) formed by vertically arranging legs (13); a front side wall (2) or a rear side wall (3) of the base (1) or a parent chain (11) ) Rear side wall (12b) engagement receiving portions (6), (1
The engaging portion (15) that is detachably engaged with the front side wall (1
9a) and a square chain body (10) having a rear end back surface (19b) grounded on the floor surface, and a proper number of child chain bodies (19). A bridge for construction sites, etc.