JP2019167815A - Safety handrail in binding type scaffold - Google Patents

Abstract

To provide a safety handrail in a binding type scaffold for preventing a locking tool with a hook of a safety band extending from body of an operator from slipping from the handrail.SOLUTION: A connection part (4) is configured by fixing in engagement an engagement piece (5a) of a bracket (5) in a plate shape part (4a) formed in both ends of bendable region of a horizontal material (2) made from a bendable metal pipe, in a state where engagement and disengagement means (6) arranged in the bracket is fixed to the post (1) of the scaffold and a recessed space (20) is formed at both ends of a horizontal material, by locking a locking tool (11) with a hook of a safety band extending from body of an operator to the horizontal material slidably, in a configuration of executing a high place work, a rigid part (G) is configured by fixing a short pipe (25) or a portal metal fitting (26) to an attached pipe part (2b) of the horizontal material adjacent to the plate shape part and locking means (22) for receiving the locking tool (11) with a hook sliding along the horizontal material by an end part of the short pipe or a portal metal fitting (25a)(26c) is formed.SELECTED DRAWING: Figure 8

Description

TECHNICAL FIELD The present invention relates to a safety handrail such as a preceding handrail in a tight-binding scaffold, and relates to one in which a hook with a safety belt extending from a worker's body is prevented from falling off the handrail.

Conventionally, for the construction of temporary scaffolds at construction sites, etc., the handrail advance method has been recommended for the safety of workers, and prior to installing the upper work floor, the advance handrail for work safety is installed from the lower work floor. The At this time, when installing the upper work floor, the worker locked the hook with a safety belt hook extending from the body to the leading handrail, and should have fallen from the work floor by sliding his / her foot. Ensure safety.

The hook-equipped locking device has an opening / closing mechanism that enables one-touch engagement / disengagement operation, and is made slidable in a state of being locked to the horizontal material of the preceding handrail in order to allow the operator to move. Yes. Therefore, as long as the locking tool with the hook of the safety belt is locked to the horizontal material of the preceding handrail, the safety of the operator can be ensured.

By the way, since there is no guarantee that there is no possibility that the locking tool will come off from the preceding handrail when the operator falls, the safety measure in this respect is important. We have just proposed a safety device for leading handrails in such framework scaffolds.

JP2015-68145A JP-A-2015-68146

However, in the case of a leading handrail used for a tight-type scaffolding such as a wedge-tightening type, which is different from the framework scaffold, an operator who is working mistakenly while sliding the hooked locking tool along the horizontal material of the handrail When falling from the work floor, a unique phenomenon that is significantly different from the case of the framework scaffold described in the above patent document occurs.

For this reason, it is necessary to investigate a problem peculiar to the preceding handrail of the tight type scaffolding from a viewpoint different from the case of the preceding handrail in the frame scaffold, and to provide a newly devised safety device.

As a first means, the present invention provides a handrail capable of most effectively preventing detachment of a hook-attached locking tool as a result of searching for problems peculiar to the preceding handrail of a binding type scaffold. The construction consists of a horizontal member made of a bendable metal pipe disposed between a pair of adjacent struts of a tight-working scaffold, and a connecting part formed at both ends of the bendable region of the horizontal member. A safety handrail comprising a downwardly-facing bracket and an engagement / disengagement means provided on the bracket, and the attachment / detachment fixation means is detachably fixed to the fixing means of the support column to attach the safety handrail to the scaffold, In a state where a recessed space is formed from the horizontal member to the engagement / disengagement fixing means via the bracket, a safety band hooked locking tool extending from an operator's body can be slid on the horizontal material of the safety handrail. High by locking In the configuration for performing the work, the horizontal member made of the metal pipe is formed by forming a plate-like portion pressed and deformed from the left and right at both ends, and fitting and fixing the fitting piece extending to the bracket to the plate-like portion. The connecting portion is configured, and further, a short tube is extrapolated and fixed to a horizontal tube adhering tube portion adjacent to the plate-like portion, whereby the connecting portion, the bracket, the adherend tube portion, and the covered tube portion. The region including the adjacent tube portion connected to the receiving tube portion constitutes a rigid portion that is higher in rigidity than the bendable region, and receives the hook-attached locking tool that slides along the horizontal member. The locking means is formed by the end portion of the short pipe facing the opposite side of the connecting portion.

Further, the present invention is configured as the second means in that a horizontal member made of a bendable metal pipe disposed between a pair of adjacent struts of a binding type scaffold, and a bendable region of the horizontal member. A safety handrail comprising a downward bracket fixed to a connecting portion formed at both ends of the bracket and an engagement / disengagement fixing means provided on the bracket, and the attachment / detachment fixation means is detachably fixed to the fixing means of the column. Thus, the safety handrail is attached to the scaffold, and a safety belt extending from an operator's body to the horizontal material of the safety handrail is formed in a state where a recessed space is formed from the horizontal material to the engagement / disengagement fixing means via the bracket. In a configuration in which a work at a high place is performed by slidably locking a locking tool with a hook, the horizontal member made of metal pipe forms a plate-like portion that is pressed and deformed from both sides at both ends, and the bracket Fitting extended to The connecting portion is configured by inserting and fixing a piece to the plate-like portion, and a metal fitting is fixed to a horizontal pipe adhering pipe portion adjacent to the plate-like portion, and is suspended from the upper wall of the metal fitting. By fixing the side wall to the adherend tube portion, the region including the connecting portion, the bracket, the adherend tube portion, and the adjacent tube portion connected to the adherend tube portion is more than the bendable region. A rigid portion having a high rigidity is formed, and a locking means for receiving a hooked locking tool that slides along the horizontal member is formed by an end portion of the metal fitting facing the opposite side of the connecting portion. In the point.

And, when the present invention is configured as a third means, a horizontal member made of a bendable metal pipe disposed between a pair of adjacent struts of a binding type scaffold and a horizontal member below the horizontal member. It is a safety handrail composed of a pair of crossed diagonal members, with a downward bracket fixed to the connecting portions formed at both ends of the bendable region of the horizontal member, and an engagement / disengagement fixing provided at the upper ends of the pair of diagonal members Each means is pivotally connected to the downwardly extending end of the bracket, and the safety handrail is attached to the scaffold by inserting and fixing the downward insertion piece of the pair of diagonal members in the wedge holes of the fixing means of the pair of struts. A safety band hook-attached locking tool that extends from the operator's body to the horizontal material of the safety handrail in a state in which a recessed space is formed from both ends of the horizontal material to the engagement / disengagement fixing means via brackets. To slidably lock In the configuration where the height work is performed, the horizontal member made of metal pipe forms a plate-like portion that is pressed and deformed from both sides at both ends, and the fitting piece that extends to the bracket is fitted and fixed to the plate-like portion. The connecting portion is configured, and a short tube is extrapolated and fixed to an attached tube portion of a horizontal member adjacent to the plate-like portion, whereby the connecting portion, the bracket, and the attached tube portion The hook includes a hook that slides along the horizontal member, wherein a region including the adjacent tube portion connected to the adherend tube portion forms a rigid portion that is higher in rigidity than the bendable region. The latching means for receiving the point is formed by the end portion of the short pipe facing the opposite side of the connecting portion.

Furthermore, the present invention is configured as a fourth means in which a horizontal member made of a bendable metal pipe disposed between a pair of adjacent struts of a binding type scaffold and a horizontal member below the horizontal member. It is a safety handrail composed of a pair of crossed diagonal members, with a downward bracket fixed to the connecting portions formed at both ends of the bendable region of the horizontal member, and an engagement / disengagement fixing provided at the upper ends of the pair of diagonal members Each means is pivotally connected to the downwardly extending end of the bracket, and the safety handrail is attached to the scaffold by inserting and fixing the downward insertion piece of the pair of diagonal members in the wedge holes of the fixing means of the pair of struts. A safety band hook-attached locking tool that extends from the operator's body to the horizontal material of the safety handrail in a state in which a recessed space is formed from both ends of the horizontal material to the engagement / disengagement fixing means via brackets. By slidably locking In the configuration for performing work at a high place, the horizontal member made of metal pipe forms a plate-like portion that is pressed and deformed from both sides at both ends, and an insertion piece extending to the bracket is fitted and fixed to the plate-like portion. The connecting portion is thereby configured, and a metal fitting is fixed to a horizontal tube adhering pipe portion adjacent to the plate-like portion, and a side wall extending from the upper wall of the metal fitting is fixed to the adhering pipe portion. Thus, a rigid portion having higher rigidity than the bendable region is configured by a region including the connecting portion, the bracket, the adherend tube portion, and the adjacent tube portion connected to the adherend tube portion. The locking means for receiving the hooked locking tool that slides along the horizontal member is formed by the end of the metal fitting facing the opposite side of the connecting portion.

According to the present invention, in a safety handrail used for a tight-type scaffolding, with a hook that slides on the horizontal member 2, located on the rigid portion G including the connecting portion 4 and the bracket 5 positioned at both ends of the horizontal member 2. Since the locking means 22 for receiving the locking tool 11 is provided, the locking tool 11 with the hook does not fall into the recessed space 20 formed by the downward bracket 5. The inside operator is freed from the complicated work of having to return the hooked locking tool 11 that has fallen into the recessed space 20 toward the horizontal member 2.

And in the state where the locking tool 11 with the hook was slidably locked to the horizontal member 2, in the unlikely event that the operator falls into the outer space of the handrail, the horizontal member 2 is tightened by the master rope to be tensioned. Since the hook-equipped locking tool 11 that is slid along is received by the locking means 22 on the rigid portion G, there is an effect that the operator who has fallen can be safely protected in the suspended state.

In this case, according to the first and third aspects of the present invention, the short tube 25 is extrapolated to the adherend tube portion 2b of the horizontal member 2 adjacent to the plate-like portion 4a of the connecting portion 4 and fixed by welding or the like. The reinforcing tube portion 2b is strengthened, and the adjacent tube portion 2c connected to the adherend tube portion 2b is made difficult to bend and has high rigidity, so that the rigid portion G includes the adjacent tube portion 2c. can do.

And since the latching | locking means 22 is formed by the edge part 25a of the said short tube 25 which faces the other side of the said connection part 4, the locking tool 11 with a hook which slides the horizontal material 2 is made by the said edge part 25a. Receiving and stopping on the adjacent pipe portion 2c constituting the rigid portion G can be performed.

Further, according to the present invention described in claims 2 and 4, the side wall 26b of the gate-shaped metal fitting 26 is welded or the like to the adherend pipe portion 2b of the horizontal member 2 adjacent to the plate-like portion 4a constituting the connecting portion 4. By adhering, the adhering tube portion 2b is strengthened and the adjacent tube portion 2c connected to the adhering tube portion 2b is difficult to bend and has high rigidity. Therefore, the rigid portion including the adjacent tube portion 2c is included. G can be configured.

Since the locking means 22 is formed by the end portion 26c of the gate-shaped metal fitting 26 facing the opposite side of the connecting portion 4, the hooked locking tool 11 that slides the horizontal member 2 is connected to the end portion 26c. Can be received and stopped on the adjacent pipe portion 2c constituting the rigid portion G.

It is a front view which shows an example of the preceding handrail in the conventional binding type scaffold. The method of fixing the engaging / disengaging fixing means of the diagonal member to the flange type fixing means of the column is shown, (A) is a front view showing a state before fixing, and (B) is a front view showing a state after fixing. . It is a perspective view which shows the relationship between the preceding handrail attached to the binding type | formula scaffold, and a locking tool with a hook. With regard to a general hook-equipped locking tool, (A) is a front view showing a state in which the opening / closing mechanism is closed, and (B) is a front view showing a state in which the opening / closing mechanism is opened. It is a perspective view which shows the problem of a prior art and shows a state when an operator falls to the external space of a handrail in the state which the latching tool with a hook fell in the recessed space. It is a perspective view which shows the comparative example which provided the processus | protrusion in the horizontal material of a prior art, and shows a state when an operator falls in the external space of a handrail in the state which the latching tool with a hook contact | abutted to processus | protrusion. The rigid structure of the handrail which this invention discovered in order to solve the problem of a prior art is shown, (A) is a front view, (B) is a top view. 1 shows a first embodiment of the present invention, in which (A) is a front view and (B) is a perspective view. FIG. The 2nd Embodiment of this invention is shown, (A) is a front view, (B) is a perspective view.

(Elucidation of conventional technologies and problems)
Prior to describing embodiments of the present invention, a prior handrail and its problems in a conventional binding scaffold will be described with reference to the drawings.

As shown in FIG. 1 to FIG. 6, a leading handrail (hereinafter simply referred to as “handrail”) used in a conventional binding scaffold is a flexure disposed between a pair of adjacent struts 1, 1 of the scaffold. The horizontal member 2 is made of a bendable metal pipe, and a pair of diagonal members 3 and 3 intersect with each other below the horizontal member 2.

The horizontal member 2 has a downward bracket 5 made of a metal plate fixed to both ends via a connecting portion 4. The connecting portion 4 includes a plate-like portion 4 a formed by pressing and deforming both ends of the metal pipe constituting the horizontal member 2 from the left and right sides, and an insertion piece 5 a extending from the metal plate constituting the bracket 5. The insertion piece 5a is inserted into the plate-like portion 4a and fixed by welding or the like.

The diagonal members 3, 3 are provided with an engaging / disengaging means 6 at the upper end and a fastening means 7 with a wedge at the lower end, and the engaging / disengaging means 6 is attached to the downward extension end 5 b of the bracket 5 of the horizontal member 2. A downward insertion piece 6b such as a pin is provided on the jaw portion 6a of the engagement / disengagement fixing means 6 which is pivotally coupled to the shaft means 8 such as bolts and nuts and extended beyond the shaft means 8.

Therefore, the handrail is attached to 9 on a flange-type fixing means fixed at an interval in the vertical direction of the column 1 in the scaffold. As shown in FIG. 2 (A), with the horizontal member 2 disposed between the pair of support columns 1 and 1, the diagonal member 3 is suspended from the shaft member 8 and the engaging / disengaging member 6 is directed upward to fix the member. As shown in FIG. 2 (B), the diagonal member 3 is rotated so that the insertion piece 6a of the engagement / disengagement fixing means 6 is inserted into the wedge hole 9a of the fixing means 9, as shown in FIG. Thereby, the engagement / disengagement fixing means 6 of the diagonal member 3 is fixed to the fixing means 9 of the column 1 and the brackets 5 at both ends of the horizontal member 2 are fixed. At this time, the lower ends of the pair of diagonal members 3, 3 that are in an intersecting state are fixed to another flange-type fixing means 9 fixed below the column 1 via the fastening means 7.

When the worker performs work on the work floor of the scaffold, the worker is provided with a safety belt provided with a hook 11 with a hook at the tip of the master rope 10 extending from the body wear such as a waist belt. Safety is secured by slidably locking the stopper 11 to the horizontal member 2 of the handrail.

As shown in FIG. 4, the hook-attached locking tool 11 is provided with a ring portion 13 for connecting the master rope 10 to the tail end portion of a hook member 12 made of a metal plate, and a hook opening of the hook member 12 is provided. An opening / closing mechanism including an opening / closing arm 14 that opens and closes is provided. The opening / closing arm 14 is rotatable about the pivot 15 as a fulcrum, and is urged to rotate in the counterclockwise direction shown in the figure by the spring 16 from the inside to the outside of the hook opening. The contact portion 14 a is brought into contact with the claw portion 12 a at the tip of the hook member 12. For safety, a lock arm 17 is provided on the opposite side of the opening / closing arm 14. The lock arm 17 is rotatable about the pivot 18 and is urged to rotate in the clockwise direction shown in the figure by a spring 19 toward the lock claw 14 b of the open / close arm 14. The pin 17 a is brought into contact with the back edge portion of the hook member 12.

Accordingly, as shown in FIG. 4 (A), the lock claw 14b of the open / close arm 14 is closed to the lock pin 17a in a state where the hook opening is closed by the open / close arm 14 abutting the abutment portion 14a on the claw portion 12a. Therefore, the opening / closing arm 14 is prevented from rotating in the direction of opening the hook opening (clockwise direction in the figure).

When the operator puts the open / close arm 14 and the lock arm 17 in the hand and grasps both arms, the hook opening is opened as shown in FIG. 4B. When squeezed, the lock arm 17 rotates against the spring 19 in the counterclockwise direction shown in the figure, thereby releasing the lock pin 17a from the lock claw 14b, and the open / close arm 14 in the illustrated clockwise direction. Then, the hook opening is opened by separating the contact portion 14a from the claw portion 12a.

Therefore, the operator holds the released hook member 12 on the lateral frame 4 of the preceding handrail 3 by grasping both the arms 14 and 17 of the hook-equipped locking device 11, and puts his hands from both arms 14 and 17. By separating, the hook opening can be closed while the horizontal frame 4 is locked, and the engagement / disengagement operation can be performed with one touch.

The hook-attached locking device 11 is slidable along the horizontal material 2 of the handrail, and therefore the operator can move within the range of the length of the master rope 10 and the sliding range of the locking device 11 with the hook. It is.

By the way, since the horizontal member 2 of the handrail attached to the binding type scaffolding is provided with the downward brackets 5 at both ends of the horizontal member 2 as described above, as shown in FIGS. Recessed spaces 20 extending from the horizontal member 2 to the engagement / disengagement fixing means 6 via the bracket 5 are formed at both ends of the.

For this reason, when the worker travels on the work floor, as shown in FIG. 3, the hooked locking tool 11 slides along the horizontal member 2 while being pulled by the master rope 10, and from the position indicated by the solid line. When moving to the end of the horizontal member 2, there is a possibility of falling into the recessed space 20 as indicated by the chain line.

However, as shown in the figure, the hook-equipped locking tool 11 that has fallen into the recessed space 20 is sandwiched between the bracket 5 and the upper end of the diagonal member 3 and held in a sideways posture. If the person simply pulls the master rope 10, it is difficult to return the hooked locking tool 11 to the original position (the position indicated by the solid line). As a result, in order to return the hook-equipped locking tool 11 to the original position where it can slide along the horizontal member 2, the operator raises the locking tool 11 by hand and faces the horizontal member 2. There is a complication that must be moved.

If the operator falls into the external space of the handrail in a state where the hook-attached locking tool 11 has fallen into the recessed space 20, a part of the locking tool 11 is shown as indicated by an arrow TW in FIG. May be twisted while being sandwiched between the bracket 5 and the upper end of the diagonal member 3. Since the hook member 12 of the hook-attached locking tool 11 is weak in the twisting direction and easily deforms, there is a possibility that the hook member 12 may be detached from the handrail by detaching from the opening / closing arm 14 and opening the hook opening. There is a problem that cannot be secured.

Therefore, in order to solve the above problem, as in the comparative example shown in FIG. 6, the protrusion 21 is provided in the vicinity of the end of the horizontal member 2, and the hooked locking tool 11 faces the recessed space 20. It is thought that it may be configured to prevent sliding.

However, in the case of this comparative example, if the operator falls into the outer space of the handrail in the state where the hook-equipped locking tool 11 is in contact with the protrusion 21, bending with low rigidity is possible as shown in the figure. The horizontal member 2 made of a simple metal pipe may be bent and deformed. Such bending of the horizontal member 2 may cause distortion in the connecting portion 4 between the horizontal member 2 and the bracket 5, and may cause the plate-like portion 4a and the fitting piece 5a of the connecting portion 4 to be separated. Can not ensure the safety of the elderly.

(Basic configuration of the present invention)
The present invention has found that the above problem can be solved by eagerly searching for the rigid structure of the horizontal member 2 that slidably locks the hook-attached locking tool 11.

As shown in FIG. 7, the horizontal member 2 includes the connecting portions 4 including the plate-like portions 4 a at both ends of the bendable region F that holds the round pipe shape formed by the metal pipe, and the connecting portions The bracket 5 made of a metal plate is extended from 4. Accordingly, when the horizontal member 2 receives a heavy load in the vertical direction, the bendable region F may be easily bent and deformed, whereas the bracket 5 made of the metal plate and the plate-like portion 4a. And the connection part 4 which consists of the insertion piece 5a is formed so that bending may become difficult, and comprises the rigid part G which hold | maintains high rigidity.

Therefore, if the hooked locking device 11 is configured to be positioned and received by the rigid portion G, the rigid portion G is easy even if a large load is applied in the vertical direction via the locking device 11. Therefore, the load can be suitably supported.

Therefore, the present invention is characterized in that a locking means 22 (FIGS. 8 to 11) for receiving the hooked locking tool 11 is provided in the rigid portion G as described above.

In general, when an operator falls into the outer space of the handrail, it usually falls in a state where the posture is broken while putting a hand on a part of the handrail, and at that time, the master rope 10 is instantly tensioned from the relaxed state. Therefore, the hook-attached locking tool 11 does not stop in the bendable region F and is slid toward either one of the both ends of the horizontal member 2. For this reason, by providing the locking means 22 in the rigid portion G, the sliding hook-equipped locking tool 11 can be received on the rigid portion G. And since the rigid part G can support this load, even when a heavy load acts on the locking tool 11 with a hook via the master rope 10, it can safely protect the fallen worker in the suspended state. It becomes possible to do.

Moreover, by providing the locking means 22 in the rigid portion G, the hooked locking tool 11 is always locked in a slidable state with the horizontal member 2 and does not fall into the recessed space 20. Therefore, the worker who is working is relieved from the complicated work of having to return the hooked locking tool 11 that has fallen into the recessed space 20 toward the horizontal member 2.

(First embodiment)
FIG. 8 shows a first embodiment of the present invention. The horizontal member 2 made of metal pipe is formed with plate-like portions 4a that are pressed and deformed from the left and right at both ends as in the prior art, and the bracket 5 The connecting piece 4 is formed by fitting the fitting piece 5a extending to the plate-like part 4a and fixing it by welding or the like, and further, the pipe for adhering the horizontal member 2 adjacent to the plate-like part 4a By attaching the short pipe 25 to the part 2b and fixing it by welding or the like, the adherend pipe part 2b is reinforced.

At this time, the reinforced tube portion 2b is made of a highly rigid material that is difficult to bend even in the adjacent tube portion 2c that is continuous from the short tube 25 toward the bendable region F. The rigid portion G is constituted by a region including the connecting portion 4, the adherend tube portion 2b reinforced by the short tube 25, and the adjacent tube portion 2c.

Therefore, the end portion 25a of the short tube 25 facing the opposite side of the connecting portion 4 forms a locking means 22 that protrudes upward as indicated by H3 from the upper end of the horizontal member 2.

For this reason, the hook-attached locking tool 11 that slides on the horizontal member 2 is received by the end portion 25a of the short tube 25 and can be stopped on the adjacent tube portion 2c constituting the rigid portion G. Become.

(Second Embodiment)
FIG. 9 shows a second embodiment of the present invention. The horizontal member 2 made of metal pipe is formed with plate-like portions 4a that are pressed and deformed from both sides at both ends, as in the prior art, and the bracket 5 The connecting piece 4 is formed by fitting the fitting piece 5a extending to the plate-like part 4a and fixing it by welding or the like, and further, the pipe for adhering the horizontal member 2 adjacent to the plate-like part 4a The gate-shaped metal fitting 26 is fixed to the portion 2b, and a pair of side walls 26b suspended from the upper wall 26a of the gate-shaped metal fitting 26 is fixed to the adherend pipe portion 2b by welding or the like. ing.

At this time, the strengthened adherent tube portion 2b is made of a highly rigid material that is difficult to bend even in the adjacent tube portion 2c that is continuous from the gate-shaped fitting 26 toward the bendable region F. The rigid portion G is constituted by the region including the connecting portion 4, the adherend tube portion 2 b reinforced by the gate-shaped metal fitting 26, and the adjacent tube portion 2 c.

Therefore, the end portion 26c of the gate-shaped bracket 26 facing the opposite side of the connecting portion 4 forms a locking means 22 that protrudes upward as indicated by H4 from the upper end of the horizontal member 2.

For this reason, the hook-attached locking tool 11 that slides on the horizontal member 2 is received by the end portion 26c of the gate-shaped bracket 26, and can be stopped on the adjacent pipe portion 2c constituting the rigid portion G. It becomes.

(Handrail type)
Although the preceding handrail has been described above, it should be understood that the handrail of the present invention is not necessarily limited to the preceding handrail, and broadly includes various handrails that are attached for safety purposes in a tight-type scaffolding. .

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Horizontal material 2a End part 2b Adhered pipe part 2c Adjacent pipe part F Bendable area G Rigid part 3 Diagonal material 4, 4A Connection part 4a Plate-like part 5 Bracket 5a Insertion piece 5b Downward extension end 6 Engaging / disengaging Means 6a Jaw part 6b Insertion piece 7 Tightening means 8 Shaft means 9 Fixing means 9a Wedge hole 10 Master rope 11 Hook lock 12 Hook part 13 Ring part 14 Open / close arm 15 Pivot 16 Spring 17 Lock arm 18 Pivot 19 Spring 20 Concave Entrance space 21 Protrusion 22 Locking means 25 Short pipe 25a End 26 Gate-shaped bracket 26a Upper wall 26b Side wall 26c End

Claims (4)

A horizontal member (2) made of a bendable metal pipe disposed between a pair of adjacent struts (1) and (1) of a binding scaffold, and both ends of the bendable region (F) of the horizontal member. It is a safety handrail comprising a downward bracket (5) fixed to the formed connecting portion (4), and an engagement / disengagement fixing means (6) provided on the bracket,
The safety handrail is attached to a scaffold by detachably fixing the engagement / disengagement fixing means (6) to the fixing means (9) of the column (1), and from the horizontal member (2) to the bracket (5). In the state where the recessed space (20) toward the engagement / disengagement fixing means (6) is formed, a safety band hooked fastener (11) extending from the worker's body is attached to the horizontal material (2) of the safety handrail. In the configuration to work at high places by locking slidably,
The horizontal member made of the metal pipe forms a plate-like portion (4a) that is pressed and deformed from both sides at both ends, and the fitting piece (5a) extending to the bracket (5) is fitted and fixed to the plate-like portion. By configuring the connecting portion (4),
Furthermore, by connecting the short pipe (25) to the horizontal pipe adhering pipe part (2b) adjacent to the plate-like part (4a), the connecting part (4), the bracket (5), The region including the adherend tube portion (2b) and the adjacent tube portion (2c) connected to the adherend tube portion constitutes a rigid portion (G) having higher rigidity than the bendable region (F). And
The end (25a) of the short pipe (25) facing the opposite side of the connecting part (4) with the locking means (22) for receiving the hooked locking tool (11) sliding along the horizontal member A safety handrail in a binding-type scaffold characterized by being formed by: A horizontal member (2) made of a bendable metal pipe disposed between a pair of adjacent struts (1) and (1) of a binding scaffold, and both ends of the bendable region (F) of the horizontal member. It is a safety handrail comprising a downward bracket (5) fixed to the formed connecting portion (4), and an engagement / disengagement fixing means (6) provided on the bracket,
The safety handrail is attached to a scaffold by detachably fixing the engagement / disengagement fixing means (6) to the fixing means (9) of the column (1), and from the horizontal member (2) to the bracket (5). In the state where the recessed space (20) toward the engagement / disengagement fixing means (6) is formed, a safety band hooked fastener (11) extending from the worker's body is attached to the horizontal material (2) of the safety handrail. In the configuration to work at high places by locking slidably,
The horizontal member made of the metal pipe forms a plate-like portion (4a) that is pressed and deformed from both sides at both ends, and the fitting piece (5a) extending to the bracket (5) is fitted and fixed to the plate-like portion. By configuring the connecting portion (4),
Further, the metal fitting (26) is fixed to the horizontal pipe adhering pipe portion (2b) adjacent to the plate-like portion (4a), and the side wall (26b) suspended from the upper wall (26a) of the metal fitting is provided as the above-mentioned. A region including the connecting portion (4), the bracket (5), the adherent tube portion (2b), and the adjacent tube portion (2c) connected to the adherent tube portion by being fixed to the adherent tube portion. Constitutes a rigid portion (G) having a higher rigidity than the bendable region (F),
The locking means (22) for receiving the hooked locking tool (11) sliding along the horizontal member is provided by the end (26c) of the metal fitting (26) facing the opposite side of the connecting part (4). A safety handrail in a binding scaffold characterized by being formed. A horizontal member (2) made of a bendable metal pipe disposed between a pair of adjacent struts (1) and (1) of a binding type scaffold, and a pair of diagonal members intersecting each other below the horizontal member (3) A safety handrail constructed by (3),
The downward bracket (5) is fixed to the connecting portions (4) formed at both ends of the bendable region (F) of the horizontal member, and the engagement / disengagement means (6) provided at the upper ends of the pair of diagonal members (3) ) Are respectively pivotally connected to the downwardly extending ends (5b) of the brackets, and the downward insertion pieces (6b) of the pair of diagonal members engaging and disengaging means (6) are connected to the fixing means (9 Attach the safety handrail to the scaffold by inserting and fixing it in the wedge hole (9a) of
In a state where a recessed space (20) is formed from both ends of the horizontal member (2) to the engagement / disengagement fixing means (6) via the bracket (5), an operator is placed on the horizontal member (2) of the safety handrail. In the configuration to work at a high place by slidably locking the locking device (11) with hook of the safety belt extending from the body of
The horizontal member made of the metal pipe forms a plate-like portion (4a) that is pressed and deformed from both sides at both ends, and the fitting piece (5a) extending to the bracket (5) is fitted and fixed to the plate-like portion. By configuring the connecting portion (4),
Furthermore, by connecting the short pipe (25) to the horizontal pipe adhering pipe part (2b) adjacent to the plate-like part (4a), the connecting part (4), the bracket (5), The region including the adherend tube portion (2b) and the adjacent tube portion (2c) connected to the adherend tube portion constitutes a rigid portion (G) having higher rigidity than the bendable region (F). And
The end (25a) of the short pipe (25) facing the opposite side of the connecting part (4) with the locking means (22) for receiving the hooked locking tool (11) sliding along the horizontal member A safety handrail in a binding-type scaffold characterized by being formed by: A horizontal member (2) made of a bendable metal pipe disposed between a pair of adjacent struts (1) and (1) of a binding type scaffold, and a pair of diagonal members intersecting each other below the horizontal member (3) A safety handrail constructed by (3),
The downward bracket (5) is fixed to the connecting portions (4) formed at both ends of the bendable region (F) of the horizontal member, and the engagement / disengagement means (6) provided at the upper ends of the pair of diagonal members (3) ) Are respectively pivotally connected to the downwardly extending ends (5b) of the brackets, and the downward insertion pieces (6b) of the pair of diagonal members engaging and disengaging means (6) are connected to the fixing means (9 Attach the safety handrail to the scaffold by inserting and fixing it in the wedge hole (9a) of
In a state where a recessed space (20) is formed from both ends of the horizontal member (2) to the engagement / disengagement fixing means (6) via the bracket (5), an operator is placed on the horizontal member (2) of the safety handrail. In the configuration to work at a high place by slidably locking the locking device (11) with hook of the safety belt extending from the body of
The horizontal member made of the metal pipe forms a plate-like portion (4a) that is pressed and deformed from both sides at both ends, and the fitting piece (5a) extending to the bracket (5) is fitted and fixed to the plate-like portion. By configuring the connecting portion (4),
Further, the metal fitting (26) is fixed to the horizontal pipe adhering pipe portion (2b) adjacent to the plate-like portion (4a), and the side wall (26b) suspended from the upper wall (26a) of the metal fitting is provided as the above-mentioned. A region including the connecting portion (4), the bracket (5), the adherent tube portion (2b), and the adjacent tube portion (2c) connected to the adherent tube portion by being fixed to the adherent tube portion. Constitutes a rigid portion (G) having a higher rigidity than the bendable region (F),
The locking means (22) for receiving the hooked locking tool (11) sliding along the horizontal member is provided by the end (26c) of the metal fitting (26) facing the opposite side of the connecting part (4). A safety handrail in a binding scaffold characterized by being formed.

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