JP4097532B2 - Prop post - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strut for a master rope used when a rope called a master rope is stretched to prevent a worker walking on a horizontal beam or the like of a building under construction from falling. .
[0002]
[Prior art]
As described in Patent Document 1, this type of main rope support column includes a support column main body, clamp means connected to a lower side portion of the support column main body, and a parent device connected to the upper end of the support column main body. A main rope support column, which is provided with a rope lock portion, and is provided in the same manner by standing upright on the horizontal overhang edge portion of a steel frame constituting a horizontal beam or the like via the clamping means. The master rope (rope) is stretched by using the master rope locking portion between the bridge and the pillar. Thus, as described in Patent Document 1, when a main strut strut is erected on the horizontal overhanging edge portion or the like of a steel frame via the clamping means, as shown in Patent Document 1, The clamp means is configured so that the main body stands vertically (vertical). However, in the case where the width of the steel frame that is the walking path of the worker is very narrow, the support strut for standing up in this way is used. As a result, the master rope stretched by using it is too close to the worker walking on the steel frame, resulting in support for the worker's walking. Therefore, as described in Patent Document 2, when the main strut support column is erected on the horizontal protruding edge portion of the steel frame via the clamp means, the support column main body extends in the direction in which the upper end side of the support column protrudes outward from the steel frame. There has been proposed one in which the clamping means is configured so that the main body is inclined.
[0003]
[Patent Document 1]
Japanese Patent No. 2700383 [Patent Document 2]
JP-A-11-30043 [0004]
[Problems to be solved by the invention]
According to the conventional strut for the main rope as described in Patent Document 2, the position of the main rope to be stretched by using the strut for the main rope is separated from the upper side of the steel frame or the like on which the worker walks. As a result, it is easier for the worker to walk compared to the case where the main strut support column is erected vertically, but on the other hand, the main strut support column can be set up on a horizontal surface such as the floor or the ground. lost. For this reason, when transporting by truck or storing in a warehouse, the main strut struts, which are heavy objects, are laid horizontally and stacked, and the clamping means, the main strut locking part, etc. are deformed, etc. It was easy to be damaged. In addition, the steel frame with the main rope support post mounted on the ground is lifted to the required location with a crane. When the main work support post is installed on the ground, the main support post is placed on the ground on the side where the steel frame is attached. If the laying unit is laid down, the main support strut, which is a heavy object, is lifted up and held in the vertical position by hand. It requires a lot of physical strength.
[0005]
[Means for Solving the Problems]
The present invention has an object to provide a strut for a master rope that can solve the above-mentioned conventional problems, and the means is shown with reference numerals of embodiments to be described later. A main rope support column comprising a main body 1, a clamp means 2 provided continuously on the lateral side of the lower end of the column main body 1, and a parent rope engaging portion 3 provided continuously on the upper end of the column main body 2. The clamp means 2 includes a pair of upper and lower projecting portions 4 and 5 projecting laterally from the column main body 1 and a fastening screw 6a penetrating the upper projecting portion 4 in the vertical direction. When a horizontal mounting member (horizontal projecting edge portion F of steel frame) fitted between the projecting portions 4 and 5 is clamped and fastened with the lower projecting portion 5 by the fastening screw 6a, the upper end of the column main body 1 is fixed. In the direction that the side projects outward from the horizontal mounted member (horizontal projecting edge F of the steel frame) The main body 1 is configured to be inclined, and the lower end of the master rope column includes a lower side surface of the lower protrusion 5 of the clamp means 2 and is used to stand the column main body 1 in a vertical posture on the horizontal plane GL. In this configuration, a ground contact surface 14 perpendicular to the length direction of the column main body 1 is formed.
[0006]
When the present invention having the above-described configuration is carried out, at least the lower protrusion 5 of the clamp means 2 is formed so that the tip side away from the column main body 1 in a plan view spreads in a square shape, and the lower protrusion 5, the width of the grounding surface 14 including the lower surface can be configured such that the tip side away from the column main body 1 is wide. In this case, similarly to the lower protrusion 5, the upper protrusion 4 of the clamping means 2 is preferably formed so that the tip side away from the column main body 1 in a plan view spreads in a square shape.
[0007]
Further, the upper and lower protrusions 4 and 5 of the clamping means 2 are formed in U-shaped side plates 8 and 9 which are in contact with and fixed to the left and right side surfaces of the column body 1 and the columns of the U-shaped side plates 8 and 9. It is comprised from the horizontal direction connection materials 10-13 which connect between the upper protrusion board parts 8a and 9a which protrude from the main body 1, and between the lower protrusion board parts 8b and 9b, The lower side of this U-shaped both-sides board 8 and 9 The ground plane 14 can be formed by the end face. In this case, the upper protruding plate portions 8a and 9a protruding from the column main body 1 of the U-shaped side plates 8 and 9 are formed with reinforcing ribs 15a and 15b that are recessed in a groove shape and bulge outward. The left and right sides of the lateral coupling member 10 are fixed inside the reinforcing ribs 15a and 15b of the left and right upper projecting plate portions 8 and 9 in an internally fitted state, and the fastening screw 6a is fixed to the lateral coupling member 10. The clamping means 2 can be configured by screwing through.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a column main body made of a square pipe material, 2 denotes a clamping means provided on the lower side (front side) of the lower end of the column main body 3, Is a master rope locking portion provided at the upper end of the column main body 1. The clamp means 2 includes a pair of upper and lower protrusions 4 and 5 protruding laterally from the column main body 1 and a pair of left and right fastening screws 6a and 6b penetrating the upper protrusion 4 in the vertical direction. is there. A handle 7 is attached to the front side surface of the column main body 1 at a position close to the clamping means 2.
[0009]
The clamp means 2 will be described in more detail. The upper and lower protrusions 4 and 5 of the clamp means 2 are in contact with the left and right side surfaces of the column body 1 and are fixed to the U-shaped side plates 8 and 9 fixed by welding. Lateral connecting members 10, 11 and 12, which connect the U-shaped side plates 8, 9 between the upper protruding plate portions 8a, 9a and the lower protruding plate portions 8b, 9b protruding forward from the column main body 1; 13, and the lower end surfaces of the U-shaped side plates 8 and 9 constitute a grounding surface 14 perpendicular to the length direction of the column main body 1.
[0010]
Reinforcing ribs 15a and 15b are formed on the upper protruding plate portions 8a and 9a of the U-shaped side plates 8 and 9 constituting the upper protruding portion 4 of the clamping means 2 and the inner side is recessed in a groove shape and bulges outward. One of the connecting members 10 made of a thick plate member out of the lateral connecting members 10 and 11 constituting the upper projecting portion 4 of the clamping means 2 is provided on the left and right sides of the inner grooves of the reinforcing ribs 15a and 15b. The fastening screws 6a and 6b are threaded through the lateral connecting member 10 in the vertical direction. The other lateral connecting member 11 is fixed by welding between the front side edges of the upper projecting plate portions 8a, 9a of the U-shaped side plates 8, 9 so as to cover the front end of the lateral connecting member 10. Of course, the lateral connecting member 11 is also fixed to the front end of the lateral connecting member 10 by welding. Thus, as shown in FIG. 1A, when the column main body 1 is tilted at a predetermined angle so that the upper end is tilted backward, the fastening screws 6a and 6b are oriented vertically (vertical) and the fastening screws 6a and 6b. Is configured such that the thick lateral connecting member 10 threaded through in the vertical direction is horizontal.
[0011]
On the inner sides of the concave sides of the U-shaped side plates 8 and 9 constituting the upper and lower protrusions 4 and 5 of the clamp means 2, bent protrusions 8c and 9c are formed so as to integrally protrude outward. The bent overhanging portions 8c and 9c at the upper corner of the portion 5 are configured to be one step lower, and the lateral connecting member 12 made of an angle member is fixedly installed by welding between the left and right corners that are one step lower. The direction connecting member 13 is welded between the front side edges of the lower projecting plate portions 8b and 9b of the U-shaped side plates 8 and 9 so that the upper end is flush with the upper surfaces of the front half portions of the bent overhang portions 8c and 9c. It is fixed with. The horizontal plate portion of the lateral connecting member 12, the upper end surface of the lateral connecting member 13, and the upper surface of the front half of the bent projecting portions 8 c and 9 c are parallel to the thick lateral connecting member 10 of the upper protrusion 4. A clamping receiving surface 2a is configured. As shown in FIG. 4, a lower end closing plate 16 that closes a lower end opening that is cut obliquely so that the front side of the column main body 1 is raised is fixed between the U-shaped side plates 8 and 9 by welding.
[0012]
As described above, the U-shaped side plates 8 and 9 which are in contact with the left and right side surfaces of the column main body 1 and are fixed by welding in order to form the upper and lower protrusions 4 and 5 of the clamp means 2 As shown in FIG. 3, the upper and lower protruding plate portions 8 a, 8 b and 9 a, 9 b protruding forward from the main body 1 are formed so as to spread in the shape of a letter C toward the left and right outer sides. Accordingly, the thick lateral connecting member 10 through which the fastening screws 6a and 6b of the upper protruding portion 4 are screwed and the portion extending forward from the column main body 1 of the lower end closing plate 15 is also made wider toward the tip side. A portion of the grounding surface 14 formed and formed by the lower end surfaces of the U-shaped side plates 8 and 9 extends forward from the column main body 1 in a C shape.
[0013]
The grounding surface 14 configured by the lower end surfaces of the U-shaped side plates 8 and 9 is configured to be perpendicular to the length direction of the column main body 1. Therefore, as shown in FIG. 1B, the master rope support having the above-described configuration can be made to stand by itself stably using the ground contact surface 14 at the lower end where the side from which the clamp means 2 protrudes becomes wider. The U-shaped side plates 8 and 9 are continuously provided with tapered extending portions 8d and 9d extending upward along the left and right side surfaces of the column main body 1 as shown in the figure. The bending strength of the column main body 1 is increased by welding the entire area of the contact boundary between the U-shaped side plates 8 and 9 including 8d and 9d and the column main body 1.
[0014]
The master rope locking portion 3 may have any configuration, but the master rope locking portion 3 shown in the figure is attached by a bolt 17 using a screw hole provided in the fixing top plate 1a at the upper end of the column main body 1. The mounting board portion 18 and the master rope locking member 19 projecting from the mounting board portion 18 are configured. The mounting board portion 18 has a hat shape in cross section in which a rectangular bent portion 20a is integrally formed from a single plate material, and the rectangular bent portion 20a is in a plan view of the column main body 1. Mounting plate portions 20b extending on both sides of the lower end of the rectangular bent portion 20a are mounted on the top plate 1a of the column main body 1 with the bolts 17 so as to be along the diagonal line. The master rope locking member 19 is obtained by bending one wire, and both leg portions 21a and 21b parallel to the length direction of the column main body 1 are formed on the rectangular bent portion 20a of the mounting substrate portion 18. It is constructed so that the master rope can be locked and stretched in any direction at 360 degrees on the closed annular portion 21c formed between the upper end portions of both leg portions 21a and 21b. ing.
[0015]
As shown in FIG. 1B, the main strut strut of the above configuration is self-supported vertically on the horizontal plane GL as shown in FIG. 1B, and a rope or the like so as to bundle a large number of self-support strut struts as needed. Can be united. And in use, as shown in phantom lines in FIG. 1A, the concave portions between the upper and lower protruding portions 4, 5 of the clamping means 2 are fitted from the side to the horizontal protruding edge portion F of the steel frame constituting the horizontal beam, The upper two fastening screws 6a and 6b are tightened, and the horizontal protruding edge portion F is clamped and fixed between the clamping receiving surface 2a. As a result, the column main body 1 is inclined and tilted by a predetermined angle (angle difference between the ground contact surface 14 and the clamp receiving surface 2a) so that the master rope locking portion 3 at the upper end is separated from the horizontal protruding edge portion F. Established. In this way, the master rope column is erected at appropriate intervals in the length direction of the steel frames constituting the horizontal beam, and the master rope anchoring portion 3 etc. between each parent rope column or between the master rope column and the pillar, etc. The master rope can be stretched substantially horizontally at a predetermined height at a position away from the horizontal projecting edge F of the steel frame.
[0016]
【The invention's effect】
The present invention can be implemented and used as described above, and according to the parent strut of the present invention, the strut main body is clamped by a horizontal attached member such as a horizontal overhang edge portion of a steel frame. The main strut strut that is not in use is configured so that the upper end side of the strut body is inclined in the direction in which the upper end side of the strut body projects outward from the horizontal attached member. It is possible to stand in a vertical posture on the floor or on the ground by using a contact surface perpendicular to the length direction of the floor.
[0017]
Therefore, when this master rope support is transported by truck or when it is stored in a warehouse, each master rope support can be easily bundled in a vertically standing state, such as a clamping means and a master rope locking part. Can be prevented from being damaged. In addition, since the master rope support can be set up on the ground, the master rope support attached to the steel frame on the ground can also be lifted once and placed in the vertical position. Compared with the case where the clamp part needs to be moved to fit the horizontal overhanging edge part of the steel frame while holding this state by hand, workability is improved.
[0018]
In addition, according to the structure of Claim 2, since the width | variety of the said grounding surface containing the lower side surface of the lower side protrusion part of the said clamp means is comprised so that the front end side which leaves | separates from a support | pillar body may become wide, The effect of preventing lateral tilting when the master brace strut is set up vertically using the ground surface is enhanced, and the master brace strut can be stood on the ground more safely. In addition, since the clamp receiving surface formed on the upper side surface of the lower projecting portion can also be widened at the front end side, an external force is exerted on the main rope support column in the right-and-left lateral direction via the master rope in use. It is possible to improve the resistance in use and improve the safety in use. In this case, the safety in the state of use can be further enhanced by combining the configurations of the third aspect.
[0019]
According to the configuration of claim 4, the lower end surfaces of the U-shaped side plates that are in contact with and fixed to the left and right side surfaces of the column main body constitute the grounding surface. It will be wider than the width of the main body, and it is possible to improve the stability when standing the master rope support vertically. In addition, the strength of the upper and lower protrusions of the clamp means can be increased as compared with the case where the protrusion member is protruded from the front surface of the column main body by welding or the like. In this case, by adopting the configuration according to the fifth aspect, the strength of the upper protruding portion of the clamping means can be dramatically increased, and a high safety parent rope support can be easily manufactured.
[Brief description of the drawings]
FIG. 1A is a side view in a posture during use, and FIG. B is a side view in a posture standing on a horizontal plane.
FIG. 2 is a front view of FIG. 1A.
FIG. 3 is a plan view of FIG. 1A.
4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar main body 2 Clamp means 3 Parent rope locking part 4, 5 A pair of upper and lower protrusions 6a, 6b of clamp means Screws for fastening 8, 9 U-shaped side plates 10-13 Lateral connecting material 14 Grounding surface 15a, 15b Reinforcing rib F Horizontally projecting edge of steel frame (horizontally attached member)
GL level

Claims (5)

A strut main strut comprising a strut main body, clamp means provided continuously on the lateral side of the lower end of the support main body, and a master rope engaging portion provided continuously on the upper end of the post main body, wherein the clamp The means comprises a pair of upper and lower projecting portions projecting laterally from the column main body and a fastening screw penetrating the upper projecting portion in the vertical direction, and is fitted horizontally between the projecting portions. When the member is clamped and fastened between the lower projecting portion and the fastening screw, the column main body is configured such that the column main body is inclined in a direction in which the upper end side of the column main body projects outward from the horizontal attached member. At the lower end of the column, a grounding surface perpendicular to the length direction of the column body is formed, including the lower surface of the lower projecting portion of the clamp means, and standing on the horizontal surface in a vertical posture. , Strut for parent rope. At least the lower projecting portion of the clamp means is formed so that the tip side away from the column main body in plan view spreads in a C shape, and the width of the grounding surface including the lower side surface of the lower projecting portion is the column. The strut for master ropes according to claim 1, wherein a tip end side away from the main body is widened. The upper strut of the clamp means is formed so that the tip side away from the strut body in a plan view spreads in a C shape in the same way as the lower projecting portion. . The upper and lower projecting portions of the clamping means are U-shaped both side plates that are in contact with and fixed to the left and right side surfaces of the column main body, and upper and lower projecting portions protruding from the column main body of the U-shaped both side plates. The main strut strut according to any one of claims 1 to 3, further comprising a lateral connecting member for connecting the plate portions, and a lower end face of the U-shaped side plates constituting the grounding surface. . The upper protruding plate portion protruding from the column main body of the U-shaped both side plates is formed with reinforcing ribs that are recessed inwardly and bulge outward, and the reinforcing ribs of the left and right upper protruding plate portions 5. The strut for a main rope according to claim 4, wherein the left and right sides of the lateral connecting member are fixed inside in an internally fitted state, and the fastening screw is threaded through the lateral connecting member.

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