JP3648288B2 - handrail - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a handrail attached to a temporary structure such as a work scaffolding or a supporting work installed along an outer wall of a building in a construction site such as civil engineering or construction.
[0002]
[Prior art]
In construction sites such as civil engineering and construction, steel pipe frame scaffolds made of steel pipes are used as work scaffolds installed along the outer walls of buildings.
In such a scaffold, when the lower stage scaffolding is completed, the upper frame scaffolding is assembled and disassembled sequentially from the upper stage in the same way, but the assembly or demolition work is performed at the top of the uppermost stage. There is a problem that there is no safety pillar or handrail around and there is a large risk of falling or the like.
[0003]
Therefore, as a framework scaffold for eliminating such dangers, for example, an H-shaped framework scaffold disclosed in Japanese Utility Model Publication No. 1-18753 has been proposed. In this H-shaped frame scaffold, since a handrail is installed prior to the assembly of the upper frame scaffold, it is also referred to as a “handrail advance type” and demand is increasing.
However, this type of framework scaffold is a temporary material that is dismantled and used repeatedly. Even if the demand for H-shaped framework scaffolds is increasing, the traditional framework scaffolds will not be immediately needed. The vast amount of the traditional framework scaffold produced is in use until the end of its useful life.
Japanese Patent Laid-Open No. 7-54480 discloses an invention that aims to improve the safety by imparting the function of “handrail advance type” similar to that of the H-framework scaffold to an old scaffold. In the invention disclosed in Japanese Patent Laid-Open No. 7-54480, a building frame formed by connecting horizontal ends of two steel pipe pedestals by horizontal beams facing each other is set up facing each other, and a scaffold is placed between the horizontal beams of the opposing building frames. In a framework scaffolding in which required units are connected in the vertical and horizontal directions, the handrail frame is attached to the connecting joint of the steel pipe pedestal that connects the building frame in the vertical direction. A joint portion is provided so that the handrail frame can be attached to the top of the building frame.
[0004]
[Problems to be solved by the invention]
However, the framework scaffold disclosed in the above-mentioned JP-A-7-54480 also has the following problems.
That is, in the frame scaffold disclosed in Japanese Patent Application Laid-Open No. 7-54480, a joint portion is provided in the joint for connecting steel pipe pedestals, and the handrail frame can be attached to the top of the building frame by this joint portion. It is necessary to attach to each connection joint, and it cannot be attached / detached with the movement of the handrail frame. Therefore, it is necessary to prepare a quantity corresponding to the quantity of each connection joint.
In addition, the work of attaching the hook 61 of the handrail frame to the joint portion of the connection joint must always be performed from the lower scaffold, which is extremely difficult.
Therefore, from the above points, the frame scaffold disclosed in Japanese Patent Application Laid-Open No. 7-54480 has a problem that there is a doubt about its practicality.
The present invention has been made in view of the above problems in the prior art, and provides a highly practical handrail that can be easily applied to a temporary structure such as a scaffold and can be attached and detached with simple and safe work. With the goal.
[0005]
[Means for Solving the Problems]
That is, the handrail of the present invention is attached to a temporary structure formed by connecting the required units in the vertical direction and the horizontal direction with structural units composed of vertical ground, horizontal ground, and bracing, and a slide guide and a locking device are attached to the handrail main body. A slide block that can be engaged with a predetermined position between the vertical grounds of the temporary object is movably mounted on the slide guide, and the lock device is configured to be engageable with the vertical grounds. Features.
By providing one or more lock devices, the handrail can be held on the temporary object by the lock by another lock device even if the lock state by one lock device is released.
An example of the temporary object is a scaffold.
Moreover, there is a support work as the temporary object.
A lock release lever is attached to the lock device, and the lock can be released by the lock release lever.
The slide block is fixed to the tip of the stay, and the slide block can be operated by the stay.
The slide block includes rolling means, and can be moved in the slide guide via the rolling means. An example of this rolling means is a bearing.
[0006]
[Action]
Therefore, according to the handrail of the present invention, the slide guide and the lock device are attached to the handrail main body, and the slide block that can be engaged with the predetermined position between the vertical grounds of the temporary object is movably mounted on the slide guide. At the same time, since the locking device can be engaged with the building frame, the handrail main body can be automatically locked at a fixed position (the horizontal frame part of the building frame). In other words, when the handrail rises, the handrail body automatically locks and releases the obstacles (muscle pins, stiffeners, horizontal members) on the slide guide (the pedestal of the building frame) using a mechanism that uses gravity. The handrail can be lowered while raising the “unlock” lever when it rises repeatedly and descends. In particular, a slide guide is provided on the handrail body, so that the safety device (slide block) slides up and down in the slide guide. Since the handrail is lifted along the “slide guide”, the handrail does not fall below the bracing / intersection even if the handrail is removed.
[0007]
【Example】
A handrail according to an embodiment of the present invention will be described below.
FIG. 1 is a perspective view showing a handrail of one embodiment of the present invention, and FIG. 2 is a plan view of a scaffold in a state where the handrail of the present embodiment is mounted.
As shown in each drawing, the handrail of this embodiment is formed by attaching a slide guide 101 and a lock device 102 to a handrail main body 100. A slide block 103 is movably mounted on the slide guide 101, while a lock release lever 104 is attached to the lock device 102.
3 and 4 show details of the locking device 102. As shown in FIG. 3 and FIG. 4, the locking device 102 is attached to a fixing bracket 105 fixed to the handrail main body 100 and is rotatably attached to the fixing bracket 105 via a pin 106. The lock release lever 108 is attached to the opening / closing bracket 107. The fixing bracket 105 is provided with a stopper 107a for regulating the opening / closing angle of the opening / closing bracket 107.
[0008]
5 to 7 show details of the slide guide 101 and the slide block 103. The slide guide 101 is provided with a notch 101a at the upper end. On the other hand, the slide block 103 is attached to the stay 109. The slide block 103 includes a base end portion 110 fixed to the distal end of the stay 109 and a block main body rotatably attached to the base end portion 110 via a pin 111, and the block main body is directly attached to the pin 111. It consists of a flange 113, a plate 114 fixed to the tip of the support rod 113, and a locking pin 115 provided on the plate 114.
The base end portion 110 is fixed to the tip end of the stay 109 with a pin 117 through a block 116. An engagement pin 118 is attached below the block 116 at the tip of the stay 109. As shown in FIGS. 6B and 6C, bearings 116a are attached to both sides of the block 116, and the block 116 moves smoothly in the slide guide 101 by the bearings 116a.
[0009]
Next, the actual usage of the handrail of this embodiment will be described with reference to FIGS.
First, as shown in FIG. 8, the locking device 102 is locked to the building frame horizontal member with the handrail of the present embodiment being arranged, and the bracing 3 is shown in FIG. 5 on the slide block 103 of the safety device. Attach in a manner. Next, in order to assemble the upper scaffold, as shown in FIG. 9, the slide block 103 is removed from the brace, the stay 109 is gripped, the slide block 103 is raised along the slide guide 101, and the slide block 103 is slid. The guide 101 is arranged at the topmost position. At this time, as shown in FIG. 5, the block 103 is folded so as not to be caught by the “steel scaffolding plate” or the like while the slide block 103 is raised. Further, at the topmost position of the slide guide 101, as shown in FIG. 7, the engagement pin 118 of the slide block 103 is engaged with the notch 101a at the upper end of the slide guide 101, the stay 109 is rotated 90 degrees, and the slide block 103 is moved. The slide guide 101 is held at a fixed position.
[0010]
In that state, an upper scaffold is built on the current scaffold, and the bracing 3 is arranged on the upper scaffold. When arranging the bracing 3, the engagement state of the engagement pin 118 of the slide block 103 with respect to the notch 101 a at the upper end of the slide guide 101 is released, and the slide block 103 whose engagement state has been released is used as the intersection of the bracing 3. Engage with each other. In the engagement, as shown in FIG. 5, the bracing 3 is inserted inside the plate 114 fixed to the tip of the support rod 113, and the lower portion of the bracing 3 is supported by the locking pin 115 in this state. To do.
Next, as shown in FIG. 10, the handrail main body 100 is raised and the handrail main body 100 is arranged at a predetermined position. In the process, as shown in FIG. 3 and FIG. 4, obstacles such as bracing pins, stiffeners and horizontal members 119, which are attached to the building pedestal 11 by opening and closing the fitting 107 of the locking device 102 by gravity. As a result, the handrail main body 100 slides upward. At that time, the movement of the opening / closing bracket 107 is limited to a maximum opening of 45 ° by the stopper 105a.
[0011]
As a result, in the state where the handrail main body 100 is arranged at a predetermined position, the handrail main body 100 is automatically locked at a certain position, that is, at the horizontal member 119 of the building frame 1. That is, the handrail main body 100 is held at a fixed position by the engagement of the opening / closing bracket 107 with the horizontal member 119 of the building frame 1.
In the process of raising the handrail main body 100 as described above, the slide block 103 slides in the slide guide 101 while being locked and fixed to the brace 3 and relatively descends in the slide guide 101.
When the handrail main body 100 is lowered, the handrail main body 100 can be slid downward by opening the opening / closing bracket 107 by lifting the lock release lever 108 upward.
[0012]
Therefore, according to the handrail of the present embodiment as described above, the obstacles on the pedestal 11 of the building frame 1 such as the bracing pin, the stiffener, and the horizontal member 119 are “utilized by gravity” when raised. With this mechanism, the handrail main body 100 can be lowered while pulling up the lock release lever 108 when it is lifted while being automatically locked and released repeatedly.
Moreover, a slide guide 101 is provided on the handrail main body 100, and a slide block 103, which is a safety device, slides up and down in the slide guide 101. At the time of ascent, the slide block 103 is fixed to the crossing portion of the brace 3 and the handrail is raised along the slide guide 101. Therefore, the fixing bracket 105 of the locking device 102 and the opening / closing bracket 107 with respect to the building frame base 11 Even if the match is lost, since the slide block 3 is engaged with the intersection of the brace 3, the handrail does not leave the scaffold and fall to the ground.
In the above embodiment, since the locking device 102 is provided in two upper and lower stages, even if the upper locking device 102 is disengaged from the horizontal member 119 and the pedestal 11, the lower locking device 102 is used as the pedestal 11. Since the handrail is engaged, the handrail does not leave the scaffold.
In addition, although the Example which applied the handrail of this invention to the scaffolding handrail of a frame scaffold was demonstrated above, the handrail of this invention can also be applied also as a preceding handrail of a single pipe | tube scaffold, for example.
Further, the handrail of the present invention can be applied not only as a scaffold but also as a preceding handrail at the time of construction of a support work.
[0013]
【The invention's effect】
As described above, the handrail according to the present invention has the slide guide and the lock device attached to the handrail main body, and the slide block that can be engaged with a predetermined position between the vertical grounds of the temporary object is movably mounted on the slide guide. At the same time, since the locking device can be engaged with the building frame, there is always a “handrail” when assembling and dismantling a temporary structure such as a scaffold, so that the work can be performed safely.
Also, the raising and lowering of the “handrail” can be performed easily and safely on the work floor of the scaffold.
Furthermore, accidents such as dropping can be prevented when the “handrail” is replaced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a handrail according to an embodiment of the present invention.
FIG. 2 is a plan view of a handrail according to an embodiment of the present invention.
FIG. 3 is a partial side view of a handrail according to an embodiment of the present invention.
FIG. 4 is a partial plan view of a handrail according to an embodiment of the present invention.
FIG. 5 is a partial perspective view of a handrail according to an embodiment of the present invention.
FIG. 6 is a partial perspective view of a handrail according to an embodiment of the present invention.
FIG. 7 is a partial perspective view of a handrail according to an embodiment of the present invention.
FIG. 8 is a front view of a handrail according to an embodiment of the present invention.
FIG. 9 is a front view of a handrail according to an embodiment of the present invention.
FIG. 10 is a front view of a handrail according to an embodiment of the present invention.
DESCRIPTION OF SYMBOLS 100 ... Handrail main body, 101 ... Slide guide, 102 ... Locking device, 103 ... Slide block, 104 ... Lock release lever, 105 ... Fixing metal fitting, 106 ... Pin, 107 ... Opening and closing bracket, 108 ... Lock release lever, 109 ... Stay.

Claims (3)

 A structural unit composed of vertical and horizontal grounds is attached to a temporary structure formed by connecting required units in the vertical and horizontal directions, and a slide guide and a lock device are attached to the handrail body. A handrail characterized in that a slide block engageable with a predetermined position between vertical objects is movably mounted, and a lock device is engageable with the vertical ground. The handrail according to claim 1 , wherein the temporary object is a scaffold. The handrail according to claim 1 , wherein the temporary object is a support work.

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