JP4093560B2 - Parent rope support - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a master rope support.
[0002]
[Prior art]
The master rope support is a metal tool used to hang the master rope at a high work position in construction work or the like. As shown in FIG. The main body 3 is composed of a column main body 3 of a prismatic pipe serving as a master rope support section 2 and a grip body 4 which is opened laterally at the lower end of the main body 3 and into which a plate-like member a such as a steel frame flange is inserted.
The master brace 1 is attached to the plate member a serving as a pillar fixing part such as a steel frame flange, and is removed after use. In the body 4, the upper jaw portion 5 and the lower jaw portion 6 face each other in the column height direction, and both the upper jaw portion 5 and the lower jaw portion 6 project in the lateral direction. When viewed from the side, it was provided to be substantially U-shaped. Further, a pair of screws 7 are provided on the upper jaw portion 5 (see FIG. 6), and the master rope support 1 is fixed to the support fixing part by clamping the plate member a by tightening the screws. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 5-52119 (paragraph number 0003, FIG. 4)
[0004]
[Problems to be solved by the invention]
In the above-mentioned conventional master rope support 1, as shown in FIG. 6, the upper jaw body 5 of the barb 4 has a horizontal member extending in a lateral direction, and the screw 7 is screwed to each horizontal member. Match. The screws 7 are arranged in a state of being separated in a direction orthogonal to the upper jaw part projecting direction and arranged on a straight line in a direction perpendicular to the upper jaw part projecting direction.
And, when working at a high place, the worker wears the safety belt worn on the master rope via the safety pulley, and moves with the safety pulley locked to the master rope as the operator moves. Even if the master rope is pulled in a direction orthogonal to the direction of the master rope tension, it has sufficient strength to withstand such external force and the installation is reliable. .
However, if an excessive impact is applied by dropping this parent rope support during handling at the construction site, etc., the simple pillar-shaped support pillar part and the rod body that is extremely deformed with respect to this support pillar shape Stress is concentrated between them, and it is easy to bend at this connecting portion. For this reason, care must be taken when transporting or installing the master rope support, but there is a problem that it is difficult to handle because it is heavy.
Therefore, in view of the above circumstances, the present invention aims to prevent breakage at the connecting portion with a simple configuration even if an excessive external force is applied to the master rope support so that damage to the master rope support is less likely to occur. The purpose is to.
[0005]
[Means for Solving the Problems]
The present invention has been made in consideration of the above-mentioned problems, and is formed by connecting a column main body having an upper end as a parent rope support portion and a grip body that is opened sideways and into which a plate-like member such as a steel flange is inserted, In the master rope supporting structure in which the plate-like member is clamped by fastening a pair of screws provided on the handle body and fixed to the column fixing part, the column body is connected to the connecting part of the column body to the handle body. The master rope support | pillar characterized by providing the reinforcement mechanism part formed by inserting the some metal prismatic body which lengthened the size in order from the inner side of this is solved, and the said subject is eliminated.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail based on the embodiment shown in FIGS.
The master rope support 1 shown in the figure, which is an example of the present embodiment, has the same basic form as that of the conventional one, and a pillar body 3 of a prismatic pipe whose upper end is a master rope support portion 2 and the lower end of the support pillar 3. And the gripper 4 itself also projects in the lateral direction with the upper jaw part 5 and the lower jaw part 6 facing the pillar height direction in the pillar height direction. It is provided so as to be substantially U-shaped when viewed from the side.
[0007]
As described above, the main rope support 1 composed of the support body 3 and the handle body 4 is configured to be separable into the support body 3 and the handle body 4, and the lower side of the support body 3 is inserted. The holding body 4 is provided with a mounting portion 8 having an upper surface as an insertion port so that the lower portion of the column main body 3 is inserted into the mounting portion 8, and the bolt 9 is inserted from the side surface side of the holding body 4. The other end side of the bolt is fastened and fixed with a nut or the like through a bolt hole provided in each of the holding body 4 and the column main body 3. The column main body 3 and the handle body 4 are detachably connected by the bolt 9 so that the column body 3 and the handle body 4 can be separated and handled when the master rope support column 1 is stored.
[0008]
As shown in the figure, the column main body 3 includes a plurality of bolts having a length dimension sequentially increased from the inner side of the column main body 3 so as to include a bolt connecting portion and an insertion port corresponding portion of the gripper 4. A reinforcing mechanism 11 is formed by inserting a metal prismatic body 10. Each of the prismatic bodies 10 in the reinforcing mechanism section 11 has a shape relationship in which the inner prismatic body 10 can be taken in and out of the outer prismatic body 10 and the outer surface of the inner prismatic body 10 is in contact with the inner surface of the outer prismatic body 10. This relationship is also established between the column main body 3 located on the outermost side and the rectangular column body 10 in contact with the inner surface thereof.
Thus, in the column body 3, the reinforcement composed of a plurality of prismatic bodies 10 whose length is gradually increased from the inside to the outside so as to include the bolt connecting portion and the portion corresponding to the insertion port of the gripper. A mechanism portion 11 is provided, and the reinforcing mechanism portion 11 can exert a lap spring action.
As described above, since the strut body 3 of the main rope support 1 has the reinforcing mechanism portion 11 so as to be able to generate a lap spring action, Even when an impact with a large load is applied, the impact energy is absorbed by the reinforcement mechanism 11 and does not cause bending of the support body 3 corresponding to the support body insertion opening or roll of the support body 4. Can be.
Of course, even if the main rope support 1 falls and hits on the slab at the time of carrying in or handling, the impact energy can be absorbed by the reinforcing mechanism 11 and the master rope support itself can be damaged. Can be greatly reduced.
[0009]
Furthermore, in the present embodiment, each of the pair of screws 7 screwed into the upper jaw portion 5 of the gripper 4 is separated in a direction perpendicular to the upper jaw portion protruding direction X as shown in FIG. They are arranged in such a way that their positions in the upper jaw portion extending direction X from the upper jaw tip are different. As described above, in the present embodiment, the pair of screws 7 are spaced apart from each other with the interval 12 in the upper jaw portion projecting direction X, and the column main body from the direction along the upper jaw portion projecting direction X. Even if an external force is applied to 3, the roll of the tailoring body 4 is suppressed, and the inclination of the master rope support 1 is prevented. Of course, even if an external force is applied to the column main body 3 along the direction in which the master rope is stretched (that is, in the direction perpendicular to the upper jaw portion stretching direction X), the pair of screws 7 is perpendicular to the upper jaw portion stretching direction X. Since it is also separated in the direction to do, the inclination of the master rope support 1 does not occur.
Therefore, the standing state of the master rope support 1 in use can be properly maintained.
[0010]
【The invention's effect】
As described above, in the present invention, the reinforcing mechanism portion is formed by inserting a plurality of metal prismatic bodies whose lengths are increased in order from the inner side of the support body at the connection portion of the support body to the handle body. Even if an impact, such as dropping on a slab at a construction site, is applied, the reinforcement mechanism absorbs the impact and prevents the column main body from bending. Furthermore, since the reinforcement mechanism part is provided in the inside of the support | pillar main body, there exists an effect excellent in practicality, such as being easy to maintain the outer shape of the master rope support | pillar with a simple state.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an example of a master rope support according to the present invention in a partially cut away state.
FIG. 2 is an explanatory diagram showing an example in use as seen from the side.
FIGS. 3A and 3B show an example, in which FIG. 3A is an explanatory view showing a state viewed from the side, and FIG. 3B is an explanatory view showing a state viewed from the barb opening side.
4 is an explanatory diagram showing a cross section taken along line AA in FIG. 3 and positions of a pair of screws. FIG.
FIG. 5 is an explanatory view showing a conventional example in use.
FIG. 6 is an explanatory view showing positions of a pair of screws in a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Parent rope support | pillar 2 ... Parent rope support part 3 ... Column main body 4 ... Bare body 5 ... Upper jaw part 6 ... Lower jaw part 7 ... Screw 8 ... Mounting part 9 ... Bolt 10 ... Square pillar body 11 ... Reinforcement mechanism part 12 ... interval X ... upper jaw part overhang direction

Claims (1)

A column main body having an upper end as a master rope support portion and a grip body that is opened laterally and into which a plate-like member such as a steel flange is inserted are connected, and the plate is tightened by a pair of screws provided on the grip body. In the master strut strut that is configured to be fixed to the strut fixing site by sandwiching the shaped member,
A main strut strut provided with a reinforcing mechanism part in which a plurality of metal prismatic bodies whose lengths are increased in order from the inner side of the strut body is provided at a connection portion of the strut body with respect to the handle body. .

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