JP2005002771A - Main rope post - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main rope post of clamp fixed type, which exerts sufficient supporting force even if a main rope is stretched not only in parallel with the latitudinal direction of a steel frame beam but also in perpendicular to the latitudinal direction. <P>SOLUTION: The main rope post comprises a post body 2 having locking metal fixtures for the main rope on the top of the post body 2, and clamp metal fixtures 4, which are arranged on a mounting pipe 12 fitted on the lower part of the post body 2 and are mounted on a flange 3a of the steel frame beam 3 via fastening members 8 by a clamp fixing method. Each clamp metal fixture 4 is arranged to sandwich the post body 2 on both sides thereof and project in the width direction of the flange 3a, and is provided with the fastening members 8 for clamping the flange 3a. A plurality of the fastening members 8 are arranged to be shifted to each other in the width direction of the flange 3a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to improvement of a master rope support used by being attached to a flange portion of a steel beam such as H-shaped steel in a high place working place such as a construction site.

The conventional master rope support of the above-mentioned sandwiching and fixing method is provided with a master metal fitting at the upper end of the support body and a clamp fitting for attaching to the flange portion of the steel beam at the lower end (for example, (See Patent Document 1).
The clamp fitting provided at the lower end of the conventional master rope support is composed of two U-shaped side plates fixed to both side surfaces of the lower end of the support body, and a horizontal plate fixed between the two U-shaped side plates; This horizontal plate is composed of two clamping screws that are threaded and penetrated in the vertical direction in parallel with the column main body. By tightening these two clamping screws, the lower end surface of the clamping screw and the U-shaped side plate The flange part of the steel beam was clamped from above and below with the upper surface of the lower jaw part and fixed.

When the master rope is stretched in a direction parallel to the longitudinal direction of the steel beam to which the master rope is attached, the rotational moment (external force) acting on the pillar main body is clamped on the right (or left) side. Pressure is supported by the lower end surface of the screw and the upper surface of the lower jaw of the left (or right) U-shaped side plate.
JP-A-2001-115654 (2nd page, right column, 45th line to 3rd page, left column, 3rd line, FIGS. 1 and 2)

In the prior art, since the distance between the clamping screw and the left and right lower jaws is short and the span between the fulcrum and the action point is short, an overload is applied to each part. Depending on the situation at the construction site, it may be necessary to stretch the master rope not only in the direction parallel to the steel beam but also in the direction perpendicular to this. In such a case, the external force acting on the column main body (Bending moment) is received and supported by the lower end surface of the clamping screw and the front and rear ends of the lower jaw, and the span between the fulcrum and action point is small. Insufficient and difficult to use.
In addition, the column main body used in the conventional master rope support is concentrated in the vicinity of the mounting part of the clamp metal fitting of the support pillar by the external force repeatedly acting on the pillar main body through the master rope locked to the upper end. There was a case of bending.

  Therefore, the present invention widely distributes the bending stress acting near the attachment part of the clamp fitting so that the column main body is bent but not bent, and not only in the direction parallel to the longitudinal direction of the steel beam. Further, even if the master rope is stretched in a direction orthogonal to this, a holding and fixing type master rope support that can exhibit a sufficient support force is provided.

The technical means of the present invention for solving this technical problem includes a column main body provided with a parent metal locking bracket at the upper part, and a fastening member provided at the lower part of the column main body to the flange part of the steel beam. The clamp fitting is attached to the clamp fitting on both sides so as to project the width of the flange portion on both sides so as to sandwich the column main body, and the clamp fitting for clamping the flange portion to the clamp fitting on both sides. A plurality of fastening members are provided, and a plurality of these fastening members are arranged while being shifted in the flange width direction.
A pair of U-shaped side plates on both sides having upper and lower jaws that are fixed to each other on both sides of the column body at the lower part of the column body and having upper and lower jaws opposed to the flange unit from above and below, Each of the pair of U-shaped side plates between the upper jaw portion and the lower jaw portion, and the fastening member is displaced in the flange portion width direction. In a state, a plurality of screws may be inserted through.

  In addition, the clamp metal fittings are fixed to each other on both sides sandwiching the column main body at the lower part of the column main body as a pair, and a pair of U-shaped side plates on both sides having upper and lower jaws facing the flange portion from above and below, Each of the pair of U-shaped side plates on both sides and between the pair of both sides of the U-shaped side plate between the upper jaw part and the lower jaw part. And the fastening members between the U-shaped side plates between the pairs on both sides are arranged farther from the column body than the fastening members between the pair of U-shaped side plates on both sides. Then, the fastening member may be arranged at each vertex position of the isosceles triangle in plan view.

Furthermore, the clamp fitting may be attached to an attachment pipe fitted to the lower part of the column main body.
Moreover, the said support | pillar main body is comprised with the metal pipe, and the reinforcement member may be inserted in the inside.
The reinforcing member of the column main body may be composed of any one of a metal pipe, wood, glass fiber reinforced plastic, carbon fiber reinforced plastic, or a combination thereof.

  Further, the upper part of the column main body is characterized in that a master rope locking bracket is provided on at least one of both sides in the longitudinal direction of the steel beam and both sides in the direction orthogonal to the direction.

  According to the present invention, the distance between the fulcrum of the clamp fitting and the point of action, that is, the support span is perpendicular to the longitudinal direction of the steel beam with respect to the parent rope tension acting on the clamp fitting of the parent rope support. Since it can be expanded in any direction, even if the main rope is stretched not only in the direction parallel to the longitudinal direction of the steel beam, but also in the direction perpendicular thereto, sufficient support force can be exhibited. It is possible to provide a master rope support of the pinching and fixing method. In addition, by attaching the clamp bracket to the column main body via the mounting pipe, the mounting interval between the clamp brackets on both sides can be extended to the outer diameter surface of the mounting pipe on both outer sides of the column main body. The support span with respect to the longitudinal direction can be further expanded. Further, as a member for attaching the clamp metal fitting, it is easier to attach to a mounting pipe that is shortened than a long column main body. In addition, by inserting a reinforcing member into the column main body, it is possible to widely distribute the bending stress acting near the attachment part of the clamp fitting, so that the column main body can be bent but not bent.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1-6 shows 1st Embodiment of the master rope support | pillar 1 of this invention, and it attaches symmetrically to the both sides of the support | pillar main body 2 and the pipe 12 for attachment fitted to the lower part of the support | pillar main body 2. FIG. The clamp metal fitting 4 is a main constituent member.
As shown in FIG. 6, the column main body 2 includes a metal main pipe 2a and metal first and second reinforcing pipes 2b and 2c that are doubly fitted in the main pipe 2a. It has become. The outer diameter of the first reinforcing pipe 2b is slightly smaller than the inner diameter of the main pipe 2a. The length of the first reinforcing pipe 2b is about 60% of the total length of the main pipe 2a. The first reinforcing pipe 2b is fitted into the main pipe 2a from the vicinity of the lower end thereof upward, and is fixed to the main pipe 2a by welding at the lower end side. The mounting pipe 12 is coupled to the main pipe 2 a by bolts 14 and nuts 15. For this purpose, a through hole 13 is formed across the pipe axis in the mounting pipe 12, the main pipe 2a and the first reinforcing pipe 2b. The outer diameter of the second reinforcing pipe 2c is slightly smaller than the inner diameter of the first reinforcing pipe 2b. The length of the second reinforcing pipe 2c is about 20% of the entire length of the main pipe 2a. The second reinforcing pipe 2c is fitted into the first reinforcing pipe 2b upward from the vicinity of the lower end thereof, and is fixed to the first reinforcing pipe 2b by welding at the lower end side.

As each pipe 2a, 2b, 2c, a steel pipe for scaffolding or a steel pipe for ultralight scaffolding is used. For example, Superlite 700 (a jointly developed product of Daiwa Steel Pipe Industry and Nippon Steel) is preferably used as the ultralight scaffolding steel pipe. This sparlite 700 is 25% lighter than the conventional steel pipe for scaffolding, the tensile strength is increased by 40% (700 N / mm ² ), the maximum bending strength is increased by 29%, and the elongation is 15% or more. A full-scale test with 6 layers and 3 spans (height 10.5 m, width 4.5 m) has been proved to be sufficiently safe.
The pipes 2a, 2b, and 2c are joined by welding at the lower end side, and are not joined at other portions and are fitted with a slight annular gap. As a result, the load on the main pipe 2a is widely dispersed in the first reinforcing pipe 2b and the second reinforcing pipe 2c so that the main pipe 2a is bent but not bent. In particular, the first reinforcement pipe 2b is used to reinforce most of the main pipe 2a, and the second reinforcement pipe 2c is the main reinforcement in the vicinity of the clamp fitting 4 attached via the attachment pipe 12. It is used to further reinforce the pipe 2a and widely disperse the stress acting in the vicinity of the clamp fitting 4.

  The clamp fitting 4 in the first embodiment is attached to both sides of the attachment pipe 12 fitted to the lower part of the column main body 2. For this purpose, through holes 13 are formed in the vicinity of the lower end of the mounting pipe 12 and in the vicinity of the lower end of the column main body 2. The mounting pipe 12 is fitted to the lower part of the column main body 2 and bolts are inserted into the through holes 13. 14 is inserted and fastened with a nut 15. As shown in FIG. 1 and FIG. 2, the master rope is attached in the cross direction, that is, in the longitudinal direction of the steel beam and in the direction perpendicular thereto, as shown in FIGS. 1 and 2. It is fixed so that it can. In addition, a handle 16 is fixed in the middle of the support body 2, that is, near the center of gravity of the entire master rope support 1.

  The clamp metal fitting 4 is opposed to the flange portion 3a of the steel beam 3 from above and below, and has two U-shaped side plates 5 having upper and lower jaw portions 5a and 5b opposed to each other at an interval larger than the thickness of the flange portion 3a. And the connecting members 6 and 7 fixed between the upper jaw portions 5a and 5a and between the lower jaw portions 5b and 5b, respectively. The fastening member 8 is screwed through the screw hole 6a of the connecting member 6 on the upper jaw 5a side of the clamp fitting 4 and the front and rear direction of the mounting pipe 12 (the width direction of the flange portion 3a of the steel beam 3). They are arranged in a row. And the lower jaw part 5b is lengthened to the position corresponding to the said fastening members 8 and 8, as shown in FIG.1 and FIG.3.

As shown in FIGS. 4 and 5, the U-shaped side plate 5 is connected by welding with connecting members 6 and 7 at the upper and lower jaws 5 a and 5 b as a pair, and these are connected to the left and right sides of the mounting pipe 12. The flange 3a of the steel beam 3 is protruded in the width direction and fixed by welding.
As shown in FIG. 3, the connecting member 6 has a screw hole 6 a formed in parallel with the vertical direction of the column main body 2, and in this embodiment, a case where the connecting member 6 is configured with a hexagon nut is illustrated. A square nut or a series of continuous block bodies may be provided with the screw holes 6a. The connecting member 7 is composed of a plate material that connects the two U-shaped side plates 5 and 5 on both sides of the clamp fitting 4.

The fastening member 8 is mainly composed of a screw collar part, a square head part 8a is integrally formed at the upper part, and a lower end is used as a pressing leg part 8b. Screwed through.
As the mounting pipe 12, a metal pipe having an inner diameter slightly larger than the outer diameter of the column main body 2 is used, and the length is slightly longer than the vertical dimension of the U-shaped side plates 5, 5 ′ of the clamp fitting 4. .
The configuration of the first embodiment of the master rope support 1 according to the present invention is as described above. Next, the operation function of the master rope support 1 in use will be described.

  In the master rope support 1 of the present invention, the fastening members 8 of the clamp fittings 4 on the left and right sides of the support body 2 are loosened and moved above the screw holes 6a, and the lower end surface of the pressing leg 8b of the fastening member 8 and the lower jaw 5b. A large opening is provided between the upper surface of the substrate. In this state, it is fitted until the innermost part of the opening between the upper and lower jaw parts 5a and 5b comes into contact with the flange part 3a of the steel beam 3 at the work site where the master rope 11 is to be stretched, and the fastening member 8 is firmly tightened. Then, the flange portion 3a is sandwiched and fixed from the lower end surface of the pressing leg portion 8b of the fastening member 8 and the upper surface of the lower jaw portion 5b to attach the column main body 2 to the flange portion 3a of the steel beam 3. The master rope 11 is locked to the locking metal fitting 10 at the upper part of the column main body 2, and the master rope 11 is stretched in the longitudinal direction of the steel beam 3 or in the direction perpendicular thereto.

  For example, when the master rope 11 is stretched parallel to the longitudinal direction of the steel beam 3, if the tension of the master rope 11 acts in the right direction in FIG. 4, the pressing leg portion of the fastening member 8 at the right end in FIG. Rotation moment with the right end of the lower end surface of 8b as the fulcrum and the left end of the upper jaw of the lower jaw 5b in FIG. 4 as the action point acts on the clamp fitting 4, and the distance between these fulcrum and the action point depends on the column. Since it is installed on both the left and right sides of the main body 2, it becomes larger than before, and as a result, the burden force at the point of action receiving the rotational moment load becomes smaller than before, and sufficient supporting force can be exhibited. it can. In addition, when the acting direction of tension acts in the opposite (left) direction to the above, the fulcrum and the acting point have an inversely symmetrical relationship with the above.

  Further, when the master rope 11 is stretched in a direction perpendicular to the longitudinal direction of the steel beam 3, for example, if the tension of the master rope 11 acts in the right direction in FIG. 3, the right fastening member 8 in FIG. Rotation moment about the right end of the lower end surface of the lower jaw 5b and the upper left end of the lower jaw portion 5b acts on the clamp fitting 4, and the distance between these fulcrum and the point of action is the flange 3a of the steel beam 3. The fastening member 8 is shifted in the width direction and the lower jaw portion 5b is elongated in the width direction of the flange portion 3a to a position corresponding to the fastening member 8, so that it can be made longer than before. The burden force of the clamp metal fitting 4 can be reduced more than before. When the tension of the parent rope 11 acts in the opposite (left) direction to the above, the fulcrum and the action point have a reverse relationship with the above.

As described above, according to the present invention, since the burden force of the clamp fitting 4 can be reduced, the master rope 11 is stretched not only in the direction parallel to the longitudinal direction of the steel beam 3 but also in the direction orthogonal thereto. Even so, sufficient support force can be exhibited.
FIG.7 and FIG.8 is the principal part expansion vertical side view and principal part expansion front view which show 2nd Embodiment of the master rope support | pillar of this invention.
As shown in FIGS. 7 and 8, the master rope support 1 of the second embodiment includes a support main body 2 and a clamp fitting 4 for attaching to the flange portion 3 a of the steel beam 3 at the lower part of the support main body 2 by a clamping and fixing method. Are arranged symmetrically so that they protrude from the left and right sides.

  The clamp metal fitting 4 has two U-shaped side plates having upper and lower jaw portions 5a and 5b opposed to the flange portion 3a of the steel beam 3 from above and below and vertically opposed at an interval larger than the thickness of the flange portion 3a. 5 and connecting members 6 and 7 fixed between the upper jaw portions 5a and 5a and between the lower jaw portions 5b and 5b, respectively. Two fastening members 8 are arranged on the upper jaw portion 5a side of the clamp fitting 4 so as to be threaded through the screw holes 6a of the connecting member 6 and shifted in the width direction of the flange portion 3a of the steel beam 3. . The lower jaw portion 5b is elongated in the width direction of the flange portion 3a of the steel beam 3 up to a position corresponding to the two fastening members 8 and 8, as shown in FIG.

As shown in FIG. 8, the U-shaped side plate 5 is connected by welding with connecting members 6 and 7 at the upper and lower jaws 5 a and 5 b as a pair, and these are connected to the left and right sides of the lower part of the column main body 2 by steel beams. 3 is protruded in the width direction of the flange portion 3a and fixed by welding.
As shown in FIG. 7, the connecting member 6 has a screw hole 6 a formed in parallel with the vertical direction of the column main body 2. The connecting member 7 is formed of a plate material that connects the left and right U-shaped side plates 5 and 5 with a width that extends over substantially the entire length of the elongated lower jaw portion 5 b of the clamp metal fitting 4.
The fastening member 8 is mainly composed of a screw rod part, a square head part 8a is integrally formed at the upper part, and a pressing leg part 8b is fixed to the lower end by welding, and the connecting member 6 on the upper jaw part 5a side of the clamp fitting 4 is provided. The screw hole 6a is screwed through. The column main body 2 is composed of a metal main pipe 2a, and is made of metal in a lower half portion (in this embodiment, from the lower end to a height of about 1/3 as shown in FIG. 9) to which the clamp fitting 4 is fixed. The reinforcing pipe 2d is press-fitted and fixed. As shown in FIG. 9, a master metal fitting 10 is attached to the upper portion of the column main body 2. The locking metal fitting 10 is provided on both the left and right sides and the front and rear sides of the upper portion of the column main body 2.

FIG. 10 is a schematic plan view showing an example of a usage state of the master rope support 1 according to the first embodiment of the present invention, in which the master rope 11 is arranged in a direction parallel to the longitudinal direction of the steel beam 3 to which the master rope support 1 is attached. The case where it is stretched is represented by a solid line, and the case where the master rope 11 is stretched in a direction perpendicular to the longitudinal direction of the steel beam 3 is represented by a chain line.
The structure of 2nd Embodiment is as above, Next, the operation function of the use condition of this master rope support | pillar 1 is demonstrated.
The master rope support 1 of the present invention loosens the fastening members 8 of the clamp fittings 4 on both the left and right sides of the support body 2 and moves them to the upper side of the screw holes 6a so that the lower end surface of the pressing leg 8b of the fastening member 8 and the lower jaw 5b. A large opening is provided between the upper surface of the substrate. In this state, it is fitted until the innermost part of the opening between the upper and lower jaw parts 5a and 5b comes into contact with the flange part 3a of the steel beam 3 at the work site where the master rope 11 is to be stretched, and the fastening member 8 is firmly tightened. 7 and 8, the flange portion 3a is sandwiched and fixed from the lower end surface of the pressing leg portion 8b of the fastening member 8 and the upper surface of the lower jaw portion 5b to fix the column main body 2 to the steel beam. 3 is attached to the flange portion 3a. The master rope 11 is locked to the lock fitting 10 on the upper part of the column main body 2, and the master rope 11 is stretched as shown by a solid line or a chain line in FIG.

  For example, when the master rope 11 is stretched parallel to the longitudinal direction of the steel beam 3 (in the case of the solid line in FIG. 10), if the tension F of the master rope 11 acts in the right direction in FIG. Rotation moment with the lower end surface right end A of the pressing leg portion 8b of the fastening member 8 of the upper jaw portion 5a of the right clamp fitting 4 as a fulcrum and the upper left end B of the lower jaw portion 5b of the left clamp fitting 4 of FIG. Will act on the clamp fitting 4, and the distance between the fulcrum A and the action point B in the second embodiment is larger than in the prior art because the clamp fitting 4 is installed on both the left and right sides of the column body 2. As a result, the burden force at the point of action B that receives the rotational moment load is smaller than that of the conventional one, and the two fastening members 8 arranged in the front-rear direction are used for supporting the bearing. Can be made. When the direction of action of the tension F acts in the opposite (left) direction to FIG. 8, the fulcrum and the action point have an inversely symmetrical relationship with the above.

  Further, when the master rope 11 is stretched in a direction perpendicular to the longitudinal direction of the steel beam 3 (in the case of the chain line in FIG. 10), for example, the tension F of the master rope 11 acts in the right direction in FIG. 7, a rotational moment having the lower end surface right end C of the right side fastening member 8 as a fulcrum and the upper surface left end D of the lower jaw portion 5 b as the application point acts on the clamp fitting 4. The rotational moment is received and supported by D. Two distances between the fulcrum C and the action point D are arranged by shifting the fastening member 8 in the width direction of the flange portion 3 a of the steel beam 3 and the lower jaw portion 5 b is located at a position corresponding to the two fastening members 8. By making it long in the width direction of the flange portion 3a, it can be made longer than before, and the burden force of the clamp fitting 4 can be reduced more than before. When the tension F of the parent rope 11 acts in the reverse (left) direction of FIG. 1, the rotational moment with the left end of the lower end surface of the fastening member 8 on the left side of FIG. 7 as the fulcrum and the right end of the upper surface of the lower jaw 5b as the application point. Will act on the clamp fitting 4, and even in this case, the two fastening members 8 are shifted in the width direction of the flange portion 3 a of the steel beam 3 and the lower jaw portion 5 b corresponds to the two fastening members 8. By making it long in the width direction of the flange part 3a to the position to do, it can be made longer than before, and the burden force of the clamp metal fitting 4 can be reduced more than that conventionally.

As described above, according to the configuration of the second embodiment of the present invention, the burden force of the clamp fitting 4 can be reduced, so that not only the direction parallel to the longitudinal direction of the steel beam 3 but also the direction orthogonal thereto. Even if the master rope 11 is stretched, it is possible to avoid overload and to exert a sufficient supporting force.
FIGS. 11 to 13 are an enlarged vertical sectional side view, a front view, and a transverse plan view showing a third embodiment of the master rope support of the present invention.
As shown in FIGS. 11 and 12, the master rope support 1 according to the third embodiment includes a support main body 2 and a clamp fitting for attaching to the flange portion 3 a of the steel beam 3 to the lower portion of the support main body 2 by a clamping and fixing method. 4 is protruded to the left and right outer sides and arranged symmetrically.

The column main body 2 is composed of a metal main pipe 2a, and is above the attachment portion of the clamp fitting 4 from the lower end of the main pipe 2a, for example, about 1/3 to 1/2 of the total length of the column main body 2. A metal reinforcing pipe 2e and a tough and elastically deformable reinforcing core 2f are fitted in the main pipe 2a up to a height. For the main pipe 2a and the metal reinforcing pipe 2e used for the column main body 2, a steel pipe for scaffolding may be used. For example, a superlight scaffolding steel pipe (Superlight 700: jointly developed by Daiwa Steel Pipe Industry and Nippon Steel Corporation) Product). This sparlite 700 is 25% lighter than the conventional steel pipe for scaffolding, the tensile strength is increased by 40% (700 N / mm ² ), the maximum bending strength is increased by 29%, and the elongation is 15% or more. A full-scale test with 6 layers and 3 spans (height 10.5 m, width 4.5 m) has been proved to be sufficiently safe.

The reinforcing core 2f is made of a tough and elastically deformable material such as wood, glass fiber reinforced plastic, or carbon fiber reinforced plastic. In this case, it is preferable to use imported timber oriental lumber, especially Apiton Kruin (hardwood of the genus Keruing) as it is or after preserving it, but use other timber with equivalent properties. May be.
As shown in FIGS. 11 and 12, the clamp fitting 4 is attached to both outer sides of the lower part of the column body 2 by welding or the like. As shown in FIGS. 11 and 12, the clamp fitting 4 has two U-shaped inner and outer portions having upper and lower jaw portions 5 a and 5 b that are vertically opposed to each other at an interval larger than the thickness of the flange portion 3 a of the steel beam 3. It is composed of side plates 5, 5 'and connecting members 6, 7 fixed between upper and lower jaw portions 5a, 5a and between lower jaw portions 5b, 5b between two inner and outer U-shaped side plates 5, 5' on both sides. ing. A plurality of fastening members 8 (FIG. 11 exemplifies two cases) are screwed to the connecting member 6 on the upper jaw portion 5a side of the clamp fitting 4 in the width direction of the flange portion 3a of the steel beam 3. The lower jaw portion 5b is extended in the width direction of the flange portion 3a to a position corresponding to the fastening member 8.

As shown in FIGS. 12 and 13, the U-shaped side plates 5 and 5 ′ on both outer sides of the lower part of the column body 2 are connected by welding with connecting members 6 and 7 at the upper and lower jaw portions 5a and 5b as a pair of inner and outer sides. The inner U-shaped side plates 5 ′ and 5 ′ are welded in parallel on the left and right sides to the lower sides of the column main body 2.
As shown in FIG. 11, the connecting member 6 has a screw hole 6 a formed in parallel with the vertical direction of the column main body 2. In this embodiment, the connecting member 6 is formed of a cylindrical body as shown in FIG. 13. However, you may comprise with a hexagon nut or a square nut. As shown in FIG. 11, the connecting member 7 is formed of a plate material that connects the inner and outer U-shaped side plates 5, 5 ′ with a width that extends over almost the entire length of the elongated lower jaw portion 5 b of the clamp fitting 4. Is illustrated.

The fastening member 8 is mainly composed of a screw collar part, a rectangular head part 8a is integrally formed at the upper part, a pressing leg part 8b is welded to the lower end, and the screw of the connecting member 6 on the upper jaw part 5a side of the clamp fitting 4 The hole 6a is threaded through.
The configuration of the master rope support 1 according to the third embodiment of the present invention is as described above, and the operation function of the master rope support 1 in use is the same as that of the second embodiment. A reinforcing core material 2f which is composed of a main pipe 2a made of metal and is strong and elastically deformable together with the metal reinforcing pipe 2e in the main pipe 2a from the lower end of the main pipe 2a to above the attachment part of the clamp fitting 4 Therefore, when an external force in each direction is applied, the reinforcing core material 2f can be bent and dispersed to support the bending stress, so that the column main body 2 is curved but not bent. can do.

14-16 is the principal part expansion vertical side view which shows 4th Embodiment of the master rope support | pillar 1 which concerns on this invention, a front view, and a cross-sectional plan view.
In the fourth embodiment, two U-shaped side plates 5 and 5 ′ are arranged on both the left and right outer sides of the lower part of the column main body 2, and between the inner and outer two U-shaped side plates 5 and 5 ′ and between the inner two sheets. One fastening member 8 is provided between each of the U-shaped side plates 5 'and 5'.
As shown in FIG. 16, the fastening member 8 between the inner two U-shaped side plates 5 'and 5' is more than the fastening member 8 between the inner and outer two U-shaped side plates 5 and 5 '. 2 is arranged at the apex position of an isosceles triangle that is symmetric in plan view and shifted in the width direction of the flange portion 3a of the steel beam 3 so that the external force acting on the column body 2 in the left-right direction can be reduced. Thus, the span between the fulcrum and the action point of the clamp fitting 4 that clamps and fixes the column main body 2 to the flange portion 3a of the steel beam 3 is expanded to the left and right outer sides of the column main body 2, and the pinching point of the steel beam 3 By adopting three points in the width direction and the longitudinal direction of the flange portion 3a, even with respect to the external force when the master rope is stretched in the longitudinal direction of the steel beam 3 acting on the column main body 2 and the direction perpendicular thereto, The span between the fulcrum and action point is expanded, and the clamp bracket It can be the supporting force can be increased, to provide a reasonable support structure required minimum number of parts and removable trouble. In particular, the arrangement of the three fastening members 8 is arranged at the apex position of an isosceles triangle as shown in FIG. The support force of the clamp fitting 4 can be greatly increased with respect to the external force, which is extremely reasonable.

As shown in FIGS. 14 and 15, the U-shaped side plates 5, 5 ′ on both lower sides of the column main body 2 are connected by welding with connecting members 6, 7 at the upper and lower jaw portions 5 a, 5 b as a pair. The inner U-shaped side plates 5 ′ and 5 ′ are welded to both lower sides of the column main body 2. In this case, as shown in FIG. 16, the inner U-shaped side plates 5 ′ and 5 ′ are attached so as to be inclined so that the interval decreases as the distance from the column main body 2 increases. The outer U-shaped side plates 5 and 5 are attached to the inner U-shaped side plates 5 ′ and 5 ′ in parallel to the inner U-shaped side plates 5 ′ and 5 ′.
The fourth embodiment of the master rope support 1 of the present invention has the above-described configuration, and its operation is substantially the same as that of the second and third embodiments. In terms of structure, the number of parts and the number of attaching / detaching steps can be reduced. Therefore, it is more rational than the second and third embodiments.

  In addition, although the space | interval of the clamp metal fittings 4 and 4 of the right-and-left both sides in 4th Embodiment is narrowed so that it distances from the support | pillar main body 2, it may be parallel (uniform).

It is a side view of 1st Embodiment of the master rope support | pillar of this invention. It is a front view of 1st Embodiment of the master rope support | pillar of this invention. It is a principal part expanded side view of 1st Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged front view of 1st Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged plan view of 1st Embodiment of the master rope support | pillar of this invention. It is a vertical side view of the support | pillar main body of 1st Embodiment of the master rope support | pillar of this invention. It is a principal part expansion vertical side view of 2nd Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged front view of 2nd Embodiment of the master rope support | pillar of this invention. It is a general | schematic front view of the whole 2nd Embodiment of the master rope support | pillar of this invention. It is a schematic plan view of the use condition of 2nd Embodiment of the master rope support | pillar of this invention. It is a principal part expansion vertical side view of 3rd Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged front view of 3rd Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged plan view of 3rd Embodiment of the master rope support | pillar of this invention. It is a principal part expansion vertical side view of 4th Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged front view of 4th Embodiment of the master rope support | pillar of this invention. It is a principal part enlarged plan view of 4th Embodiment of the master rope support | pillar of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Master rope support | pillar 2 Support | pillar main body 3 Steel beam 3a Flange part 4 Clamp metal fitting 5, 5 'U-shaped side plate 5a, 5b Upper and lower jaw parts 6, 7 Connecting member 8 Fastening member

Claims (7)

It consists of a strut body provided with a master rope locking bracket on the top, and a clamp bracket that is provided at the bottom of the strut body and attached to the flange portion of the steel beam in a clamping manner by a fastening member.
The clamp fittings are provided on both sides so as to sandwich the column main body so as to protrude in the width direction of the flange portion, and clamp members for clamping the flange portions are provided on the clamp fittings on both sides, respectively. A parent brace, which is arranged in a plurality in a shifted manner in the width direction.   A pair of U-shaped side plates on both sides having upper and lower jaws that are fixed to each other on both sides of the column body at the lower part of the column body and having upper and lower jaws opposed to the flange unit from above and below, Each of the pair of U-shaped side plates between the upper jaw portion and the lower jaw portion, and the fastening member is displaced in the flange portion width direction. The master rope supporter according to claim 1, wherein a plurality of screws are penetrated and attached in a state.   A pair of U-shaped side plates on both sides having upper and lower jaws that are fixed to each other on both sides of the column body at the lower part of the column body and having upper and lower jaws opposed to the flange unit from above and below, Each of the pair of U-shaped side plates and between each pair of the U-shaped side plates between the upper jaw part and the lower jaw part. Fastening members are respectively screwed through and installed, and the fastening members between the U-shaped side plates between the pairs on both sides are arranged farther from the column body than the fastening members between the pair of U-shaped side plates on both sides, Accordingly, the master rope support post according to claim 1, wherein the fastening member is arranged at each vertex position of the isosceles triangle in a plan view.   The said clamp metal fitting is attached to the pipe for attachment fitted to the lower part of the support | pillar main body, The master rope support | pillar in any one of Claims 1-3 characterized by the above-mentioned.   The parent strut strut according to any one of claims 1 to 4, wherein the strut body is made of a metal pipe, and a reinforcing member is inserted therein.   6. The main strut strut according to claim 5, wherein the reinforcing member of the strut body is made of any one of a metal pipe, wood, glass fiber reinforced plastic, carbon fiber reinforced plastic, or a combination thereof. .   The main strut locking bracket is provided on the upper part of the column main body on at least one of both sides in the longitudinal direction of the steel beam and both sides in the direction orthogonal to the direction. The parent rope support described.

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