JP7302790B2 - construction barricade - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction barricade that functions as a mark, a sign, or the like for restricting the entry of ordinary people, mainly at a construction site or the like.

Conventionally, this type of barricade, as is known in Patent Documents 1 and 2, includes a bar made of a round bar or a long plate that restricts the traffic of people, and the bar is supported at both left and right ends. It has a pair of legs that support each other, and is installed along the boundary line of a restricted area such as a construction site.

Japanese Utility Model Laid-Open No. 60-115919 JP-A-10-18248

However, with conventional barricades, it is necessary to arrange a plurality of barricades with adjacent legs close to each other in order to perform regulation without gaps, which requires a large number of barricades and is uneconomical. In addition, since each barricade is based on the fact that it stands alone due to the weight of the bar and legs, it is prone to overturning due to natural phenomena such as gusts or human actions such as pushing down. In this case, it is conceivable to attach a weight to the lower part of the leg to prevent this, but the work requires squatting, and the workability is poor.

An object of the present invention is to provide a construction barricade capable of improving economy and workability.

An invention made to solve the above-mentioned problems is a construction barricade having a horizontally extending bar for regulating traffic and a pair of legs supporting both ends of the bar and the upper ends of the legs. It has a pair of hollow connecting members that are connected and have an opening downward, and the connecting member is a hook that engages a third member other than the bar and the legs that are provided outside in the direction in which the bar extends. , and a support shaft supported to extend in the front-rear direction, which is perpendicular and horizontal to the bar, and a pin whose axial direction is the direction in which the bar extends, and the middle part in the vertical direction is pivotally supported. a pair of plate-shaped scissors that are biased by a spring on the side that narrows the gap between the legs and that the support shaft is inserted through the through hole of the tip portion with play; The upper end is connected to the lower end of the scissors, and swings around the support shaft via the scissors to change the posture between an open leg state in which the legs are erected in the vertical direction and a closed state in which the legs are laid down along the bar. The connecting member has a bar-shaped first leg and a second leg, and the connecting member is provided on the front and rear side surfaces and has a partial conical portion formed in a semi-conical shape with a downward opening continuously opening to the opening, and the bar and has a pair of front and rear partial circles communicating with the partial conical portion through an opening below the connecting member, and the first leg and the second leg are connected to the opening In the leg state, the lower end sides of the first leg and the second leg are biased by the spring so as to open in the front-rear direction and engage with the partial conical portion. When the lower end is closed in the front-back direction, the first leg and the second leg escape from the partial conical portion, and in this closed state, are swung around the support shaft through the opening toward the bar, It is characterized by being configured so that it can be fixed in the closed leg state by engaging with the partial circle.

According to [Configuration A] of the present invention, a chain or the like is hung over the hooks of a plurality of adjacent barricades, so that the adjacent barricades can be installed at intervals, the total number of installed barricades can be reduced, and economic efficiency is improved. be able to. In addition, the hook is provided on the connecting member that connects the bar and the leg, and the hook can be positioned at a certain height, so when working to lock the chain or weight, it is necessary to squat down. workability can be improved.

1 is a perspective view of a construction barricade according to a first embodiment of the present invention; FIG. Six views of the same barricade (Part 1). Six views of the same barricade (part 2). Six views of the same barricade (Part 3). A-A' sectional view of FIG. FIG. 3 is an enlarged perspective view as viewed from arrow B in FIG. 2 ; The front view which hung the chain on the hook of the adjacent barricade. The perspective view which hung the connection weight on the hook of the adjacent barricade. The front view which hung the connection weight on the hook of the adjacent barricade. Explanatory drawing of the effect which can reduce the fear of falling. Sixth view of the second embodiment in which the bar is a long plate (No. 1). Sixth view of the second embodiment in which the bar is a long plate (No. 2). Sixth view of the second embodiment in which the bar is a long plate (No. 3). The front view of 3rd Embodiment which made the length of a leg and the length of a bar variable. FIG. 11 is an operation explanatory view of the third embodiment in which the length of the leg and the length of the bar are variable; The front view of the example installed in the uneven ground.

As shown in FIGS. 1 to 4, the construction barricade 100 according to the first embodiment of the present invention includes a bar 1 made of a round bar 10 for restricting the traffic of people, and the bar 1 supported at both left and right ends. It has a pair of left and right legs 2 for supporting.

The round bar 10 is made of a steel pipe whose outer surface 11 is covered with a white or yellow polyethylene (PE) film, and has a total length of several tens of cm to several meters, for example, about 1.5 m, and a diameter of several tens of mm, for example, It is about 35 mm or 40 mm. On the outer surface 11, reflective sheets 12 of green color or the like are attached at intervals.

The left and right legs 2 have a first leg 21 and a second leg 22, respectively. For example, it is about 70 cm, and the diameter is several tens of mm, for example, about 18 mm or 22 mm. A ground 23 is fitted to the lower part of each leg 21 , 22 .

A connecting member 3 that connects the bar 1 and the leg 2 on the left and right sides is integrally provided with a bar connecting portion 31 and a leg connecting portion 32, and is entirely made of white vinyl chloride (ABS) or the like. The bar 1 is fixed to the bar connecting portion 31 by screws 13 .

A partial cylindrical portion 33 is provided on the side end face portion of the leg connecting portion 32, and a hook 4 for engaging a third member other than the bar 1 and the leg 2, such as a chain or a weight, is integrated in the middle portion in the height direction. is set in A base 41 of the hook 4 is reinforced with a padding 42. - 特許庁

The protruding side of the hook 4 faces the curved surface portion 34 provided at the end of the bar connecting portion 31 and the partial cylindrical portion 33 continuing therefrom, and the tip is provided with a barb 43 that curves slightly inward.

As a result, particularly when the chain is hooked on the hook 4, the end of the chain can be slid on the curved surface portion 34 and guided to the hook 4, so that the hooking operation can be carried out satisfactorily. The rotation of the chain can be allowed at any time, and the chain routing work can also be performed satisfactorily. In addition, as an external shape that fulfills such a function, a unique design effect is produced.

As shown in FIGS. 5 and 6, the upper portions of the first leg 21 and the second leg 22 are biased toward narrowing the gap between the pair of scissors 7 swinging around the pin 6 and the tips 70 thereof. A clamping mechanism 9 with a coiled spring 8 is used to combine them. The scissors 7 are integrated with the legs 21 and 22 by press-fitting a press-fit portion 72 continuous with the lower portion of the intermediate flange 71 into the upper portions of the legs 21 and 22 .

A through hole 73 is provided near the tip portion 70 of each scissors 7, and the support shaft 5 supported inside the leg connecting portion 32 of the connecting member 3 is inserted with appropriate play. The support shaft 5 is composed of a bolt 51 and a nut 52 . The pin 6 rotatably bundles two superimposed portions 76 and 77 formed by superimposing mating pieces 74 and 75 provided parallel to each pair of scissors 7, and is retained by a retaining ring 61.例文帳に追加The spring 8 is locked to the spring locking pin 78 of each scissors 7 .

The first leg 21 and the second leg 22 can swing around the support shaft 5, and can change the posture between the upright open leg state shown in FIG. 2 and the laid down closed leg state shown in FIG.

In the upright open leg state, the tip portion 70 is narrowed by the spring 8 to open the lower legs 21 and 22 and abut on the partial conical portion 35 provided at the lower hem of the leg connecting portion 32 . A protrusion 79 provided on the flange 71 of the scissors 7 is engaged with the engagement hole 36 provided in the partial conical portion 35 .

In the folded closed state, the legs 21 and 22 are aligned in a pair of partial circles 38 notched in the connecting plate 37 between the bar connecting portion 31 and the leg connecting portion 32, and are fitted into the locking holes 39 provided in the leg connecting portion 32. , to lock the projection 79 .

As shown in FIG. 7, the adjacent barricades 100 can be installed with a gap between them by passing the chain C over the hooks 4 of the adjacent barricades 100 . Therefore, the total number of installed barricades 100 can be reduced in a wide range of construction sites and the like.

Moreover, the hook 4 is provided on the connecting member 3 that connects the bar 1 and the leg 2, and is positioned at a height that can be reached by a standing worker. Crouching down on G is not necessary.

As shown in FIGS. 8 and 9, instead of chains, connecting weights W that simultaneously apply weights to adjacent barricades 100 may be engaged.

The connecting weight W is entirely made of white PE or the like. The cap W2 is removed from the inside of the main body W1, water or sand is put in, the cap W2 is closed, and the holes W4 of the locking pieces W3 provided on both sides are hooked. 4 is inserted into the hook 4 from above, or the hook 4 is pushed into the hole W4 from the side of the hook 4 through the open gap W5 of the hole W4. It is also effective to stick a warning display sticker S such as "No Trespassing" on the main body W1.

The connecting weight W enables linked locking by spanning between adjacent barricades, and locking pieces W6 for independent locking similar to the locking pieces W3 provided on both sides are integrally formed on the upper part of the main body W1. The hole W7 of the locking piece W6 is inserted into the hook 4 from above the hook 4, or the hook 4 is pushed into the hole W7 from the side of the hook 4 through the opening gap W8 of the hole W7, Effectively adds weight to barricades placed at the edges.

As shown in FIG. 10, the hook 4 is vertically downward acting on the hook 4 when one of the first leg 21 and the second leg 22 is lifted from the ground G and the other is perpendicular to the ground G in the open leg state. The load F acts on the reversal falling side of the vertical leg 22, that is, on the side opposite to the falling side T where the center line O of the leg 22 approaches falling. This relationship is satisfied by positioning the root 41 of the hook 4 below the height of the support shaft 5 .

In addition, in FIG. 10, the hook 4 is hidden behind the connecting member 3, but is drawn with a thick solid line in order to explain the action and effect.

In this way, the hook 4 is provided, and the addition of the load F acting on the hook 4 by the hook 4 and its anchoring object makes the upper part of the barricade 100 heavy, but one of the first leg 21 and the second leg 22 is lifted and the other is on the ground. to reduce the risk of tipping over even when vertical.

The hook 4 may be provided further below the leg connecting portion 32 . However, in a stable posture in which both the first leg 21 and the second leg 22 touch the ground G, the hook 4 and its locking object can be placed at any position on the center line of the connecting member 3 in a side view. Since the weight of the barricade as a whole can be increased by the load caused by the barricade and the stability can be increased, it is also possible to provide the hook 4 at the top of the bar connecting portion 31 or the like.

As shown in FIGS. 11 to 13, in a construction barricade 200 according to the second embodiment of the present invention, a bar 1 made of a long plate 20 instead of a round bar is integrally attached to the top of connecting members 3 on both left and right ends. It is fixed by a screw 14 to a protruding bar connecting portion 310 .

The overall length of the long plate 20 and the length of the leg 2 are the same as in the first embodiment. On the outer surface 15 of the elongated plate 20 made white or the like, reflective sheets 16 of green or the like are attached at intervals.

At the lower part of the bar connecting part 310, a leg connecting part 320 having the same structure and function as the first embodiment is integrally provided via an inclined part 312, and a partial cylindrical part provided on the side end face part of the leg connecting part 320 A hook 4 is integrally provided in the middle portion of 330 in the height direction.

The projecting side of the hook 4 faces the partial cylindrical portion 340 provided at the end of the bar connecting portion 310 and the partial cylindrical portion 33 continuing therefrom. The structure and function of the leg 2 are the same as those of the first embodiment, and the effects are also the same.

As shown in FIGS. 14 and 15, the construction barricade 300 according to the third embodiment of the present invention can be freely slid in the longitudinal direction by loosening the fastening of the screw portion 19 between the inner pipe 17 and the outer pipe 18 . In addition, the bar 1 is provided with a rotary slide mechanism 301 that can maintain a stepless desired length by tightening the screw portion 19 .

Reference numeral 170 denotes an idle mechanism that receives the inner pipe 17 in a freely rotatable manner, and prevents the posture of the left and right legs 2 from being twisted even if the inner pipe 17 and the outer pipe 18 rotate relative to each other as the length is changed. . It should be noted that the legs 2 have a total of four in front, rear, left, and right, as in the first embodiment and the second embodiment.

Each of the legs 2 has an inner leg 25 having the same structure and function as the first leg 21 or the second leg 22 of the first embodiment and having a projection 24 made of a partial sphere at the bottom, and the projection 24 is slidable inside. A locking slide mechanism 302 is formed by fitting an outer leg 28 having a guide 26 bulging radially outward and a locking hole 27 for locking the projection 24 at a plurality of stages, for example, three stages of height positions. Have. By changing the locking position of the projection 24 to the locking hole 27, the length of each leg 2 can be changed and the height of the bar 1 can be changed.

As a result, the length and height of the bar 1 can be changed, so that it can be applied to various construction sites and the like. By shortening the length of the legs 2, the soil 23 of the closed legs 2 can be stored in the most compact and stable state in which they are just butted together.

Furthermore, as shown in FIG. 16, by changing the length of the legs 2 corresponding to the uneven ground G, it is possible to align the height positions of the hooks 4 installed side by side. It is possible to more favorably perform cooperative installation of a plurality of units through the intermediary.

It should be noted that the locking slide mechanism 302 applied to the leg 2 may be used instead of the rotary slide mechanism 301 for sliding the bar 1 in the longitudinal direction. Further, the slide in the height direction of the leg 2 may be replaced by the rotary slide mechanism 301 applied to the bar 1 instead of the locking slide mechanism 302 .

Furthermore, these slide mechanisms are not limited to those shown in FIG. 14, and various modifications are possible. 11 to 13, in which the long plate 20 is used as the bar 1, the bar 1 may be stretchable in the length direction and the legs 2 may be stretchable in the height direction.

DESCRIPTION OF SYMBOLS 1... Bar, 2... Leg, 21... First leg, 22... Second leg, 3... Connection member, 31... Bar connection part, 32... Leg connection part, 4... Hook, 41... Base, 42... Build-up, 43... return, 5... support shaft, 6... pin, 7... scissors, 8... spring, 9... clamping mechanism

Claims (1)

A barricade for construction work that has a horizontally extending bar to restrict traffic and a pair of legs that support the bar on both sides,
Having a pair of hollow connecting members that connect both ends of the bar and the upper ends of the legs and have an opening downward,
The connecting member includes a hook provided on the outside in the direction in which the bar extends and engaging a third member other than the bar and the legs, and an inner portion extending in the front-rear direction consisting of the direction perpendicular to and horizontal to the bar. and a pin whose axial direction is the direction in which the bar extends. a pair of plate-shaped scissors in which the support shaft is inserted through the through-hole with some play;
Each of the legs has an upper end connected to a lower end of the scissors, swings about the support shaft through the scissors, and stands up in the vertical direction in an open state and in a closed state in which the legs lie down along the bar. It has a rod-shaped first leg and a second leg that can change its posture,
The connecting members are provided on the front and rear side surfaces, and have a partial conical portion with a downwardly widening semi-conical shape whose lower part is continuously open to the opening, and a pair of front and rear partial circles communicating through the lower opening of the connecting member,
The first leg and the second leg are biased by the spring so that the lower end sides of each other open in the front-rear direction in the leg-open state, and are configured to engage with the partial conical portion. When the lower ends of the first leg and the second leg are closed in the longitudinal direction, the first leg and the second leg escape from the partial cone portion, and in this closed state, the support through the opening. A barricade for construction work, characterized in that it can be fixed in a closed leg state by swinging around an axis toward the bar and engaging with the partial circle.

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