JP6774277B2 - Lifeline mounting guide - Google Patents

Description

The present invention relates to a guide hand for attaching a lifeline, and particularly in a handrail device including a vertical column standing on H-steel or the like at a building, a bridge, or the like, and a horizontal column to which the vertical column is attached. The present invention relates to a guide for attaching a lifeline that is slidably attached along this horizontal support.

In general, at a construction site of a building such as a building or a construction site of a structure such as a bridge, a plurality of vertical columns are erected on an H-steel flange via a holding member, and handrails are attached to these vertical columns along the horizontal direction. In addition, a handrail device in which a guide with a lifeline attached to this handrail is slidably inserted is used.

This handrail device is intended for safety when an operator walks on a flange of H steel or in a passage close to H steel.

In addition, since the guide with the lifeline attached is attached to the horizontal support, this guide slides around the outer circumference of the handrail as the worker walks, and as a result, the lifeline is always wrapped around the worker's body. Is connected to the handrail, so even if the worker is about to fall from the flange or the aisle, the lifeline and the handrail support the worker to prevent him from falling or falling to the ground. We are trying to be safe.

As a guide for attaching such a handrail device and a lifeline, for example, the one disclosed in Patent Document 1 has been developed.

This handrail device can be slidably inserted into each of a plurality of vertical columns attached to H-beams at construction and construction sites, a handrail holding member provided at the upper end of each vertical column, and each handrail holding member. It is equipped with two straight handrails and a guide for attaching a lifeline that is slidably attached to the outer circumference of the handrail and passes through the outer circumference of each handrail holding member.

Further, the guide for attaching the lifeline is provided with an outer cylinder and rollers provided on the upper wall and the side wall of the outer cylinder and rotatably contacting the outer circumference of the handrail and the outer circumference of the support column holding member, respectively. As the pedestrian walks, the rollers roll and pass through each handrail.

JP-A-2016-44525 (Summary, see FIGS. 1, 6, and 7)

The guide for attaching the lifeline disclosed in Patent Document 1 is not structurally defective, but the following defects are expected to be improved.

That is, since the guide for attaching the lifeline can only pass through the straight handrail and the outer circumference of the handrail holding member, when a curved support is used as the handrail at the corner of the work site, or when the handrail is held. If the outer diameter of the outer cylinder of the member is larger than the specification, or if an interfering object such as another handrail connecting member with a large outer diameter is provided in the middle of the handrail, the roller will make the curved part of the handrail. There are cases where it cannot pass, or there are cases where it interferes with the handrail holding member or the obstacle and cannot pass through the handrail holding member or the obstacle, and improvement thereof is desired.

Therefore, an object of the present invention is that if a part of the handrail is curved, or if the outer diameter of the handrail holding member is slightly larger than the specification, or if there is an interfering object in the middle of the handrail, it can pass through. it is to provide a guide for mounting.

In order to achieve the above object, the lifeline mounting guide of the present invention is a lifeline mounting guide that is slidably inserted into the outer periphery of the handrail and has an opening having an opening width narrower than the width of the handrail. A cylinder that is slidably inserted along the extension direction with respect to the handrail, a trumpet-shaped cylinder provided at both ends of the cylinder, and a cylinder provided on the upper wall and the right side of the cylinder. One or more upper rollers and right side rollers that rotatably contact the upper surface and the right side surface of the handrail, a lifeline attachment provided overhanging the right side portion of the cylinder body, and a left side portion of the cylinder body. The mounting member, the elongated bracket that is oscillatedly mounted on the mounting member, the two front and rear left roller rollers provided on both sides of the bracket, and the bracket that is interposed between the mounting member and the bracket. It is composed of a spring that attaches the left roller to the handrail side.

According to the present invention, the following effects can be achieved.

Since the guide for attaching the lifeline is provided with a oscillating roller, even if the handrail to which this guide is attached is a curved handrail provided at a corner of the work site, or a handrail provided in the middle of the handrail. Even if the outer diameter of the interfering object such as the holding member or the handrail connecting member is larger than the specified one, the roller swings and can ride on and pass through each outer circumference of the handrail holding member or the interfering object.

It is a perspective view of the handrail device which concerns on one Embodiment of this invention but provides a guide for attaching a lifeline. It is a side view of the vertical column which concerns on one Embodiment of this invention. It is a side view of the vertical column which concerns on other embodiment. It is also the side view of the vertical column which concerns on other embodiment. It is also the side view of the vertical column which concerns on other embodiment. A) It is a front view of the handrail holding member which concerns on one Embodiment of this invention. B) Similarly, it is a side view. C) It is a cross-sectional plan view of AA line. A) It is a partial notch plan view of the handrail connecting member which concerns on one Embodiment of this invention. B) Similarly, it is a front view. C) Similarly, it is a side view. D) It is a cross-sectional plan view of the AA line. It is a plan view which concerns on one Embodiment of this invention and this guide passes through a straight handrail. It is also a plan view when passing through a curved handrail at a passage corner. Similarly, it is a plan view when passing through the outer periphery of the handrail holding member. FIG. 10 is a vertical sectional side view taken along line XX of FIG.

Hereinafter, a guide for attaching a lifeline and a handrail device to which the guide is attached according to an example of implementation of the present invention will be described with reference to the drawings.

The handrail device shown in the figure is installed along the side of the aisle at the work site of buildings such as buildings and construction parts such as bridges, and prevents workers from tipping over or falling to the ground when walking in this aisle. It is intended to prevent and ensure safety.

As shown in FIG. 1, this handrail device is attached to a flange Ha of H steel W, which is a member to be attached, which is provided in the vicinity of a passage in a building part, a building, or a construction site.

The H-steel W shown in FIG. 1 is a part of a building and a structure constituting the framework of the structure, but the plane itself may also serve as a passage for workers to walk, or is close to the passage. It may be provided.

FIG. 1 shows a state in which the handrail device T is arranged corresponding to the straight passage and the passage at the curved corner portion, but it may be provided in the middle of only the straight passage.

As shown in FIG. 1, the handrail device T according to the embodiment includes left and right H steels W provided at the corners of the construction and construction sites, a pair of left and right vertical columns 1a and 1b standing at the outer ends of the W. A pair of left and right vertical columns 1c and 1c standing at the inner ends of the H steels W and W, and a pair of left and right columns inserted into the handrail holding members 2 and 2 provided at the upper ends of the left and right vertical columns 1a and 1b, respectively. The straight handrails 3a and 3b of the above, and the intermediate curved handrail 3c inserted into the handrail holding member 2 provided at the upper end of the intermediate vertical support 1c and arranged and connected between the left and right handrails 3a and 3b. have.

Further, it is provided with a pair of left and right handrail connecting members 4a and 4b slidably inserted into one end of the left and right handrails 3a and 3b and both ends of the intermediate handrail 3c, respectively.

Further, as will be described later in FIGS. 6 and 7, the handrail holding member 2 and the handrail connecting members 4a and 4b have leaf springs 6d and 14 which are loosening prevention members for the handrails 3a, 3b and 3c, respectively. ..

As described later in FIGS. 8 to 10, the guide 5 for attaching the lifeline according to the embodiment of the present invention includes a roller 22a that swings while contacting the outer circumferences of the handrail holding member 2 and the handrail connecting members 4a and 4b. It has 22b.

According to the handrail device T of FIG. 1, the left and right vertical columns 1a and 1b and the two intermediate vertical columns 1c and 1c at the corners are erected in advance on the flange of the H steel W.

Next, two left and right handrails 3a and 3b are horizontally inserted into the upper ends of the left and right vertical columns 1a and 1b and the intermediate body portion via the upper and lower handrail holding members 2 and 2, respectively.

Further, the two intermediate handrails 3c and 3c are horizontally inserted into the intermediate vertical columns 1c and 1c via the two upper and lower handrail holding members 2 and 2.

Next, the intermediate handrail 3c is connected to the left and right handrails 3a and 3b via the left and right handrail connecting members 4a and 4b.

At this time, the handrail connecting members 4a and 4b are inserted in advance on both sides of one handrail, for example, the intermediate handrail 3c, and in this state, the left and right handrails 3a and 3b are slid closer to the end of the intermediate handrail 3c. Then, the left and right handrails 3a and 3b are connected to the intermediate handrail 3c by inserting the handrail connecting members 4a and 4b into the ends of the left and right handrails 3a and 3b, respectively.

The guide for attaching the lifeline, which is slidably inserted into the handrails 3a, 3b, and 3c, moves along the outer circumference of the handrails 3a, 3b, and 3c as the worker walks, and the worker always passes through the lifeline at any position. It is supported by handrails 3a, 3b, and 3c.

FIG. 1 shows a state in which four vertical columns 1a, 1b, 1c, 1c and three handrails 3a, 3b, and 3c are provided, but even if three or more are provided depending on the length of the passage. Good, even two can be used.

There are two types of vertical columns 1a, 1b, and 1c, as shown in the embodiments shown in FIGS. 2 to 5.

The basic structures of the vertical columns 1a, 1b, and 1c according to the embodiment of each embodiment are the straight column A1 shown in FIGS. 2 and 5, or the column A2 having a bent lower portion shown in FIGS. 3 and 4. , It is composed of a holding member B provided at the lower ends of the pillars A1 and A2 and holding the flange of the H steel W, and the handrail holding member 2 is connected to the upper ends of the pillars A1 and A2 and the intermediate body, respectively. It is a thing.

One handrail holding member 2 may be provided at the upper ends of the columns A1 and A2, but in order to improve safety, another handrail holding member 2 is provided in the middle as shown in FIGS. Is also good. In this case, as shown in FIG. 1, handrails 3a, 3b, and 3c can be provided in parallel between the vertical columns 1a, 1b, and 1c.

The lower part of the pillar A2 shown in FIGS. 3 and 4 is bent, and this is a passage through a part of the pillar A2 so that the pillar A2 does not get in the way when the worker walks on the H steel W. It stands on the outside of the building and expands the space above it.

The sandwiching member B is composed of a U-shaped sandwiching piece B1 and a bolt B2 screwed onto the sandwiching piece B1.

Then, the flange Ha of the H steel is sandwiched between the holding piece B1 and the bolt B2, and the vertical columns 1a, 1b, and 1c are erected on the H steel.

As shown in FIGS. 2 and 3, the vertical columns 1a, 1b, and 1c are those with the sideways holding piece B1 attached when the flange Ha is horizontal, and those shown in FIGS. 4 and 5 when the flange Ha is vertical. As shown, the one with the downward holding piece B1 attached is used.

As shown in FIG. 6, each handrail holding member 2 shown in FIG. 1 has a hollow cylinder 2A in which the front side or the back side is released and the bottom wall 2B is inclined, and the handrail holding member 2 is inside the cylinder 2A along the bottom wall 2B. It is composed of a wedge 6 that fits slidably.

As a result, the handrails 3a, 3b, and 3c are inserted from the opened openings, respectively, and the handrails 3a, 3b, and 3c are sandwiched between the inner surface of the upper wall of the tubular body 2A and the upper surface of the wedge 6 driven in.

When the wedge 6 is pulled out, the handrails 3a, 3b, and 3c can be pulled out, and the handrails can be easily attached and detached.

Further, the tubular body 2A includes a locking hole 7 formed in the side wall and a locking pin 8 projecting downward from the bottom portion 6b.

The wedge 6 includes a main body 6a formed in a U-shaped cross section, and an elongated hole 6c formed in the bottom portion 6b in the longitudinal direction and slidably fitted to the locking pin 8.

Further, the wedge 6 is provided with a locking member made of a dogleg-shaped leaf spring 6d that is inserted into the main body 6a and is detachably fitted into the locking hole 7.

Therefore, when the wedge 6 is driven into the tubular body 2A, the wedge 6 moves straight along the elongated hole 6c while being guided by the locking pin 8, and the locking pin 8 fits into the elongated hole 6c. By doing so, it is possible to prevent the wedge 6 from coming off and being lost.

Further, when the wedge 6 is driven deeply, the dogleg-shaped locking portion of the leaf spring 6d is fitted into the locking hole 7 by a self-returning force, and the wedge 6 is prevented from loosening even if there is vibration or the like. As a result, it is possible to prevent the handrails 3a, 3b, and 3c from coming off.

As shown in FIG. 7, the handrail connecting members 4a and 4b shown in FIG. 1 have a tubular body 9a whose lower portion is open, a peep hole 10 formed in the center of the upper wall of the tubular body 9a, and a lower end of the tubular body 9a. It is composed of a wedge guide portion 9b that is continuously provided and the bottom wall 9c is inclined, and a wedge 13 that is slidably inserted into the wedge guide portion 9b along the bottom wall 9c.

The wedge guide portion 9b includes a locking hole 11 formed in the side wall and a locking pin 12 projecting downward from the bottom wall 9c.

Further, the wedge 13 has a main body 13a formed in a U-shaped cross section, an elongated hole 13c formed longitudinally in the bottom portion 13b of the main body 13a and slidably fitted to the locking pin 12, and inside the main body 13a. It is provided with a locking member made of a leaf spring 14 that is inserted and detachably fits into the locking hole 11.

According to the handrail connecting members 4a and 4b, for example, as shown in FIG. 7, the left end of the left handrail 3a and the right end of the intermediate handrail 3c are abutted and inserted into the cylinder 9a to the right side. The handrail 3a and the intermediate handrail 3c are connected along the horizontal direction.

Conversely, when removing only the intermediate handrail 3c for repair, replacement, etc., loosen the wedges 6 of the left and right handrail connecting members 4a and 4b in advance, and move each cylinder 9a to the left and right handrails 3a and 3b. All you have to do is slide it.

Since the viewing hole 10 is formed in the tubular body 9a, it is possible to visually recognize whether or not the ends of the right handrail 3a and the intermediate handrail 3c are in proper contact with each other, and safety can be ensured.

Since the wedge 6 that is slidably fitted along the bottom wall 9c is provided in the tubular body 9a, the handrails 3a, 3b, and 3c are sandwiched between the upper surface of the wedge 13 driven into the inner surface of the upper wall of the tubular body 9a. However, when the wedge 13 is loosened, the handrails 3a, 3b, and 3c can be pulled out, which makes it easy to attach and remove the handrail.

Further, the tubular body 9a is detachably fitted into the locking hole 11, the locking pin 12, the elongated hole 13c slidably fitted to the locking pin 12, and the locking hole 11 as described above. Since it is provided with a locking member made of a leaf spring 14, when the wedge 13 is driven into the tubular body 9a, the wedge 13 moves straight along the elongated hole 13c while being guided by the locking pin 12, and is locked again. Since the pin 12 is fitted in the elongated hole 13c, it is possible to prevent the wedge 13 from coming off and being lost.

Further, when the wedge 13 is driven deeply, the dogleg-shaped locking portion of the leaf spring 14 is fitted into the locking hole 11 by a self-returning force, and the wedge 6 is prevented from loosening even if there is vibration or the like. As a result, it is possible to prevent the handrails 3a, 3b, and 3c from coming off.

As described above, since the handrail device T of the present invention includes a plurality of handrail connecting members 4a, 4b, and 4c, the handrail connecting members 4a and 4b provided on both sides of the intermediate handrail 3c are adjacent to the other handrail 3a. By sliding to the 3b side, the handrail 3c in the middle can be detached from the handrail connecting members 4a and 4b and pulled out independently.

Further, the handrail connecting members 4a and 4b are attached to the adjacent handrails 3a and 3b on both sides in advance, and in this state, the handrail connecting members 4a and 4b on both sides are slid and inserted on both sides of the intermediate handrail 3c. The intermediate handrail 3c can be easily added to other adjacent handrails 3a and 3b.

Therefore, the overall length of the handrails 3a, 3b, and 3c can be adjusted according to the work site, or the damaged intermediate handrail 3c can be replaced with a new one each time, and the handrails 3a, 3b, and 3c can be attached and detached. Work can be improved.
Further, as described above, since the handrail holding member 2 and the handrail connecting members 4a and 4b have leaf springs 6d and 14 for the handrails 3a, 3b and 3c, respectively, there is vibration and the like. However, the wedges 6 and 13 do not loosen, and as a result, the handrails 3a, 3b and 3c are firmly held by the handrail holding members 2 and the handrail connecting members 4a and 4b, and the handrails 3a, 3b and 3c are prevented from coming off. It can be done and the safety can be improved.

As shown in FIGS. 8 to 11, the guide 5 for attaching the lifeline according to the embodiment of the present invention has a tubular body 15 whose lower portion is open and a trumpet-shaped tubular portion 16 provided at both ends of the tubular body 15. , 16 and one or more upper rollers 23a, 23b and right side rollers 22a provided on the upper wall and the right side of the tubular body 15 and rotatably contacting the upper surfaces and the right side of the handrails 3a, 3b, 3c, respectively. , 22a, and a lifeline attachment 27 provided overhanging on the right side of the tubular body 15. The right-side rollers 22a and 22a are rotatably fixed to a pair of brackets 19 overhanging the right side of the tubular body 15 via a rotation shaft 21b.

Further, a mounting member 18 provided on the left side side of the tubular body 15, an elongated bracket 17 oscillatingly mounted on the mounting member 18, and a handrail 3a provided on both sides of the bracket 17 via a rotating shaft 21c. It has two front and rear left side rollers 22b and 22b that rotatably contact the left side surfaces of 3b and 3c.

Further, it has a spring 26 interposed between the mounting member 18 and the bracket 17 to attach the bracket 17 and the left side rollers 22b and 22b to the handrails 3a, 3b and 3c side.

In this case, the mounting member 18 having a U-shaped cross section is provided so as to project from the left side portion of the tubular body 15, and the bracket 17 having a U-shaped cross section swings to the mounting member 18 via a support shaft 24 that can move left and right. It can be freely mounted, a guide pin 25 is provided between the outer end of the mounting member 18 and the outer end of the bracket 17, and a coil spring 26 is interposed around the outer periphery of the guide pin 25.

Further, the inner diameter of the cylinder 15 is formed to be larger than the outer diameter of the cylinder 2A of the handrail holding member 2 and the cylinder 9a of the handrail connecting member 4. Therefore, the guide 5 can pass not only the outer periphery of the handrail connecting members 4a and 4b but also the outer periphery of the handrail holding member 2. Further, the guide 5 can pass through not only straight left and right handrails 3a and 3b but also curved handrails 3c in the middle.

In the guide for attaching the lifeline of the present invention, the lifeline attached to the lifeline attachment 27 is wrapped around the body of the worker, so that this guide is attached to the outer circumference of each handrail 3a, 3b, 3c as the worker walks. Move along.

8 and 11 are a plan view and a cross-sectional view when the guide 5 passes through the outer periphery of the straight right handrail 3a. In this case, the bracket 17 is urged by the spring 26 in the direction of the tubular body 15. The bracket 17 is parallel to the tubular body 15, and the left and right rollers 22a and 22b are in parallel contact with the handrail 3a.

FIG. 9 is a plan view when the guide 5 passes through the intermediate handrail 3c with curved corners. In this case, when the curve of the handrail 3c is gentle and close to straight, the left and right rollers 22a are as shown in the figure. , 22b are in contact with the outer periphery of the handrail 3c, respectively, but if the curve angle is sharp, the bracket 17 may swing and only one roller 22b may be in contact with the handrail 3c, but the guide 5 itself is You can pass along the curve.

FIG. 10 shows a plan view when the guide 5 passes through the outer periphery of the handrail holding member 2.

In this case, when the front roller 22b of the left rollers 22b and 22b comes into contact with the outer circumference of the cylinder 2A of the handrail holding member 22, the roller 22b is pushed outward, and as a result, the bracket is opposed to the spring 26. 17 swings around the support shaft 24 in the rotational direction so that the roller 22b can ride on the outer periphery of the tubular body 2A of the handrail holding member 2 and pass therethrough.

As described above, since the guide 5 for attaching the lifeline is provided with the swinging rollers 22b and 22b, even if the handrails 3a, 3b and 3c are curved handrails provided at the corners of the work site, or the handrails are held. Even if an interfering object such as a member 2 or a handrail connecting member 4a or 4b is provided in the middle of the handrail and its outer diameter is larger than the specified one, the rollers 22b and 22b are oscillated and these handrail holding members 2 And the handrail connecting members 4a and 4b can ride on and pass through each outer circumference.

Therefore, the worker can prevent falling or falling at any position in the passage of the work site and can walk safely.

W Attached member 1a, 1b, 1c Vertical support 2 Handrail holding member 2A Cylinder 2B Bottom wall 3a, 3b, 3c Handrail 4a, 4b, 4c Handrail connecting member 5 Guide 6 Wedge 6a Main body 6b Bottom 6c Long hole 6d Leaf spring 7 Locking hole 8 Locking pin 9a Cylinder 9b Wedge guide 10 Peeping hole 11 Locking hole 12 Locking pin 13 Wedge 13a Main body 13b Bottom 13c Long hole 14 Leaf spring 15 Cylinder 16 Cylinder 17 Bracket 18 Mounting member 22a, 22b Roller 24 Support shaft 25 Guide pin 26 Spring

Claims (2)

In the guide for attaching the lifeline, which is slidably inserted around the outer circumferences of the handrails (3a), (3b), and (3c),
It has an opening whose opening width is narrower than the width of the handrails (3a), (3b), and (3c), and is slidable along the extension direction with respect to the handrails (3a), (3b), and (3c). The cylinder (15) to be inserted and
Trumpet-shaped cylinders (16) and (16) provided at both ends of the cylinder (15),
One or more upper rollers (23a) provided on the upper wall and the right side of the cylinder (15) and rotatably abutting the upper surface and the right side of the handrails (3a), (3b), and (3c), respectively. ), (23b) and right roller (22a), (22a),
A lifeline attachment (27) overhanging on the right side of the cylinder (15) and
The mounting member (18) provided on the left side of the cylinder (15) and
An elongated bracket (17) that is freely mounted on the mounting member (18),
Two front and rear left roller (22b), (22b) provided on both sides of the bracket (17) and rotatably contacting the left side surfaces of the handrails (3a), (3b), (3c).
The bracket (17) and the left side rollers (22b) and (22b) are attached to the handrails (3a), (3b) and (3c) side by being interposed between the mounting member (18) and the bracket (17). With the spring (26)
A guide for attaching a lifeline that consists of. The mounting member (18) has a U-shaped cross section and is provided so as to project from the left side portion of the tubular body (15).
The bracket (17) has a U-shaped cross section and is oscillatingly attached to the attachment member (18) via a support shaft (24) that can move left and right.
A claim in which a guide pin (25) is provided between the outer end of the mounting member (18) and the outer end of the bracket (17), and a coil spring (26) is interposed around the guide pin (25). The guide for attaching the lifeline according to item 1.

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