JP3848704B2 - Master rope support device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a parent rope support device that is stretched horizontally on a work scaffold such as a construction site.
[0002]
[Problems to be solved by the invention]
As shown in FIG. 12, the master rope used for the work platform at high altitudes is stretched by attaching the master rope 4 to the top support plate 3 of the support column 2 at regular intervals attached to the outer edge of the scaffold plate 1. The hook 5 is used for hooking or the end portion is formed on the loop 6 and attached.
[0003]
The parent rope 4 has a hook 8 of a child rope 7 that is being lowered by an operator and is hooked loosely, so that the horizontal movement is not constrained by the child rope 7 and the mother rope 4, and work at a height can be performed. We are trying to do it safely.
[0004]
In such a conventional master rope support, since the master rope is stretched for each strut, the range in which the worker can freely move is limited to one span between the struts. When it was necessary to go to one span, there was an inconvenience that the hook of the child rope had to be replaced with the parent rope of the next span at the boundary post.
[0005]
In view of this, the present inventor first constructed a device from a support main body through which the master rope can be inserted from the side and a support having the support main body provided horizontally at the upper end, and a child is formed on the upper or one side of the support main body. Even if the slits that allow the hooks of the rope end to pass are provided in the longitudinal direction and hook guides are formed at both ends of the slits to go to the next span, the hooks of the child rope ends hooked on the parent rope And a master rope support device that does not require the carabiner to be replaced with the master rope of the adjacent span (see Japanese Utility Model Laid-Open No. 7-13355).
[0006]
This conventional master rope support device does not hinder the passage of hooks and carabiners, but in the case of a moving bracket with a pulley, the thickness is greater than the thickness of the master rope. It must be wide, and if it is formed wide, the master rope comes out of the guide gap and comes off and loses the function of supporting the master rope. Limited to cases where a child rope is connected.
[0007]
The present invention has been conceived in order to solve the above-described conventional problems, and the purpose of the present invention is to allow a movable metal fitting with a pulley attached as well as a flat metal fitting to pass easily. Provided is a parent rope support device having a new configuration capable of secondarily preventing dropout from the device even if the guide road is wider than the thickness of the parent rope and the parent rope may come out of the guide road. There is.
[0008]
[Means for Solving the Problems]
According to the above-described object, the present invention has a pair of horizontally long guide members arranged in parallel at right and left sides, and spans the guide members so as to integrally connect both guide members, and between the inner side walls of the guide members. It consists of a support member that is maintained as a guide path that allows the movement of the moving metal fitting at the end of the sub rope inserted through the master rope, and a mounting portion provided on one side of the support member, and the length of both inner side walls of the guide member A slit of the required vertical width is provided in the direction, and a rope receiving pin that receives the master rope at the upper part is movably supported from one slit to the other slit, and the base end portion is supported by a spring member so as to protrude. The notch part which latches the front-end | tip part of this rope receiving pin is provided in the lower edge of the other slit in which the front-end | tip part of this is located.
[0009]
In the above configuration, the upper support member attached to the support column, the horizontal member, etc. is submerged, and the parent rope is positioned on the guide path between the guide members from one end to the other end of the guide member. It can be supported by the device via a rope receiving pin.
[0010]
In addition, the moving bracket at the end of the child rope hooked on the parent rope is only supported by the rope receiving pin above which the parent rope is movable, so that the rope receiving pin moves when the moving fitting passes through the guide path. It is pushed in the moving direction in order by the moving bracket and pushed back into the slit and temporarily retracted from the guide path, so there is no obstacle to passage, and at the same time the moving bracket passes, the rope receiving pin is moved back to its original position by the spring member. Because it returns quickly and starts receiving the master rope again, there is no possibility that the master rope comes off the rope receiving pin and falls down.
[0011]
In addition, when a downward tensile force acts on the parent rope due to a fall accident, etc., and the eccentric load that pushes inward on the rope receiving pin by the tensile force, there is the above-mentioned notch on the lower edge of the slit on the opposite inner wall. The rope receiving pin does not escape in the lateral direction, the tip part is pulled and falls obliquely into the notch, and is locked to the notch end to support the master rope.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 to 9 show an embodiment of the present invention provided with a pair of front and rear rope receiving pins.
In the figure, reference numerals 11 and 12 denote a pair of horizontally long guide members arranged in parallel with each other at a distance from each other, both of which are integrally connected by a support member 13 straddling the central portion. The connection between the inner side walls 14 and 15 of the guide members 11 and 12 is maintained as a wide guide path 16 that allows the moving metal fitting 32 at the end portion of the child rope provided on the master rope 31 to pass through the connection by the support member 13. ing.
[0013]
The inner walls 14 and 15 are provided with slits 17 and 18 having a required vertical width in the longitudinal direction, and a pair of front and rear rope receiving pins 19 for receiving the master rope 31 at the upper part from one slit 17 to the other slit 18. 20 protrudes. Further, the lower edge of the slit 18 where the tip portions of the rope receiving pins 19 and 20 are located is formed with end portions 21a and 22a for locking the tip portions on the inner side, and the required length formed on the outer side with an inclined edge. Notches 21 and 22 are provided.
[0014]
The rope receiving pins 19 and 20 have a smaller diameter than the slits 17 and 18 and are supported movably on the outer wall 11a of one guide member 11 with their base ends supported by coil springs 23 and 24. A clearance is provided on the lower side of the pin so as to incline downward when receiving a downward load from the slit 17 and is inserted through the slit 17.
[0015]
The support member 13 is formed by welding steel plates into a portal shape, and both side plates 13a and 13b are welded to the outer walls 11a and 12a of the guide members 11 and 12, respectively, and straddle over both guide members 11 and 12. A mounting plate 13d formed by extending the top plate 13c is integrally provided on one side of the upper portion.
[0016]
The master rope support device in which the guide members 11 and 12 are integrated by such a support member 13 and the guide path 16 is formed between the guide members so as to enable both the support of the master rope 31 and the passage of the movable metal fitting 32. The mounting portions by the pins 33 projecting from both ends of the lower surface of the mounting plate 13d are fitted into the mounting holes 36 of the seat plate 35 provided at the top end of the square column 34, and are mounted inside the top of the column 34. It is done.
[0017]
In the above embodiment, when the master rope 31 is moved from one end to the other end of the guide members 11, 12 and the support member 13 on the guide member attached to the column 34 is submerged and positioned in the guide path 16, The receiving pins 19 and 20 support the master rope 31. Although both ends of the master rope 31 are omitted in the figure, the master rope 31 is stretched over at least two spans by this support because it is fixed to other struts.
[0018]
In such a support state, when an operation such as conveyance extends to the adjacent span, the worker can move from the span to the span without changing the moving bracket 32. The movable metal fitting 32 at the end portion of the child rope pulled by the movement of the worker enters the guide path 16 as it is.
[0019]
At this time, if the lateral width of the guide path 16 is set to an interval that allows both side plates 32b that receive the pulleys 32a of the movable fitting 32 to pass through, bearing nuts (not shown) of the support shafts that protrude from both upper ends of the side plates 32b. ) Will be abutted on both guide members and supported by the guide members 11 and 12.
Further, when the rotating ring 32c is inserted into the outer periphery of the bearing nut as shown in the figure, the rotating ring 32c rolls with the inner upper edge of the guide members 11 and 12 as a guide rail, so there is little resistance, and the movable bracket 32 passes smoothly.
[0020]
For this reason, the load of the moving bracket 32 is not applied to the master rope 31 of the guide path 16, and the movable rope receiving pins 19, 20 are not inclined downward from the base end due to the weight of the moving bracket 32, and the moving bracket 32 pushes the rope receiving pins 19 and 20 sequentially in the moving direction by the both side plates 32b.
[0021]
In the rope receiving pins 19 and 20 that are sequentially pressed by the both side plates 32b of the moving metal 32, the front rope receiving pin 19 is first pushed in the moving direction from the base end portion by the coil spring 23 that is bent, and further in the slit 17. And is temporarily pushed away from the guideway 16. The moving bracket 32 passes through and the pressing force by the side plates 32b is removed, and at the same time, the rope receiving pin 19 is quickly returned to the original position by the restoring force of the bent coil spring 23 so as to support the master rope 31 again. become. As a result, the same operation occurs with respect to the rear rope receiving pin 20 as a result. As a result, the rope receiving pins 19 and 20 do not obstruct the passage of the movable fitting 32, and the parent rope 31 depends on the passage of the movable fitting 32. There is no possibility of falling off the rope receiving pins 19 and 20.
[0022]
As shown in FIG. 5 to FIG. 7, when a tensile force acts on the master rope 31 for some reason, and an unbalanced load that pushes inward acts on the rope receiving pin 20 due to the tensile force, the tip of the pin is positioned. Since the cutout portion 22 is formed at the lower edge of the slit 18 to be cut, the rope receiving pin 20 is pulled to the cutout portion 22 diagonally without escaping in the lateral direction, and further locked to the cutout end 22a. The parent rope 31 is supported. Further, even if the parent rope 31 jumps up and escapes upward from the guide path 16 due to the reaction at that time, the master rope 31 is blocked by the side plates of the support member 13 and falls off the guide members 11 and 12. There is nothing wrong. Therefore, the master rope 31 functions without dropping even in the fall accident of the worker.
[0023]
In the embodiment shown in FIGS. 8 and 9, the outer ends 21b and 22b of the notches 21 and 22 are also formed as locking ends, and the rope receiving pin 20 that receives the tensile force of the master rope 31 is elastic and the inner side Even if it is removed from the notch end 22a and pushed out of the guide path, the next rope receiving pin 19 is locked to the outer end 21b to prevent the master rope 31 from coming off. Therefore, in this embodiment, double safety is ensured when a shortage of accidents occurs.
[0024]
10 and 11 show a small embodiment in which the master rope 31 is supported by a single rope receiving pin 19, and the same parts as those in the above-described embodiment are indicated by the same reference numerals and the details thereof are omitted.
The pair of guide members 11 and 12 are integrally connected by a support member 13 formed of a bent plate straddling the central portion. The support member 13 has a convex side surface and is bent to form two sides, the outer wall and the bottom wall of the guide members 11 and 12, and the inner wall and the ceiling wall are bent by other plates. Both of them are welded inwardly to form the guide members 11 and 12 having a quadrilateral cross section.
[0025]
Further, on one side surface of the support member 13, a mounting portion is vertically provided by a pair of clamps 37 having upper and lower jaws. Further, a fixing bolt member 38 is screwed into the upper jaw portion of the clamp 37, and a flange or side portion of an H-shaped steel disposed as a vertical member or a horizontal member is provided between the bolt member 38 and the lower jaw portion. It can be clamped and attached to a scaffold or the like.
[0026]
Even in such a small and simplified structure, the support of the master rope 31 and the operation of the rope support pin 19 by the movable metal fitting 32 are performed in the same manner as in the above embodiment, and the rope support pin 19 is offset by the master rope 31. Even when the rope is received, the tip of the rope receiving pin 19 does not escape in the lateral direction, the tip part is pulled and falls obliquely into the cutout part 21, and is further locked to the cutout end 21a to support the master rope 31.
[0027]
As described above, the present invention can be used without being influenced by the structure and shape of the moving metal fitting at the end of the child rope passed through the master rope, and does not require any special operation when passing the moving metal fitting. Since the moving bracket also passes through the master rope support device as it moves, it is easier to move from span to span, which is extremely useful for ensuring safety in high-altitude work, although explanations have been omitted. Further, since a flat metal fitting such as a hook or a carabiner can be passed through the same operation, there is an advantage that it is easier to use than the parent rope support device having the conventional structure.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a master rope support device of the present invention.
FIG. 2 is an exploded perspective view seen from the opposite side.
FIG. 3 is a longitudinal front view showing a passing state of a movable metal fitting with a chain line.
FIG. 4 is a plan sectional view of the same.
FIG. 5 is a side view showing a guide member on one side for explaining the operation of the rope receiving pin when a tensile force is applied to the master rope, cut in the longitudinal direction.
FIG. 6 is a plan sectional view of both guide members.
FIG. 7 is a longitudinal end view of the above.
FIG. 8 is an exploded perspective view of another embodiment of the present invention.
FIG. 9 is the same as that of FIG. 5 but does not explain the operation of the rope receiving pin.
FIG. 10 is a perspective view of still another embodiment of the present invention.
FIG. 11 is a longitudinal front view showing a passing state of a movable metal fitting with a chain line.
FIG. 12 is an explanatory view showing a support state of a conventional master rope.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11, 12 Guide member 13 Support member 14,15 Inner side wall 16 Guide path 17,18 Slit 19,20 Tight receiving pin 21,22 Notch part 21a, 22a Locking end 31 Parent rope 32 Moving metal fitting 33 Pin (attachment part)
34 Prop 37 Clamp (Mounting part)
38 Bolt member

Claims (1)

A pair of horizontally long guide members arranged in parallel at right and left intervals, and a child rope that spans between the guide members and integrally connects both guide members, and between the inner walls of the guide members is inserted into the master rope. It consists of a support member that is maintained as a guide path that allows the end of the movable metal fitting, and an attachment portion that is provided on one side of the support member,
A slit having a required vertical width is provided in the longitudinal direction of both inner side walls of the guide member, and the base end portion is supported by a spring member so that the rope receiving pin receiving the master rope is movable from one slit to the other slit at the top. And a notch for locking the tip of the rope receiving pin is provided at the lower edge of the other slit where the tip of the rope receiving pin is located.

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