JP6579642B1 - Scaffolding clamp - Google Patents

Abstract

An object of the present invention is to increase the fixing strength of a wedge while allowing the wedge to be fixed at an arbitrary position. A scaffold clamp includes a first clamping member having a first notch formed by removing a part of a plate material extending in a radial direction of a column, and a part of a plate material extending in a radial direction of the column. A second holding member having a second notch formed by removing, a connecting member for rotatably connecting the holding members, and a fastening member for fastening the holding members are provided. The plate material constituting at least one of the first clamping member and the second clamping member is formed by removing a part of the plate material with a wedge insertion hole or a wedge insertion notch portion serving as an insertion portion. Yes. [Selection] Figure 1

Description

  The present invention relates to a scaffold clamp used in constructing a temporary scaffold.

  2. Description of the Related Art Conventionally, various works have been performed after constructing temporary scaffolds for workers at construction sites of various buildings, civil engineering sites, and the like. When constructing a temporary scaffold, for example, a scaffold component such as a support, a cloth material, a cloth frame, or a preceding handrail brace is used, and the cloth material or the like is connected to the support. As this connection structure, the structure which uses the wedge fixed so that it might protrude below to the edge part of a cloth material, for example, and the pocket fixed to the outer peripheral surface of a support | pillar (for example, patent documents 1-1) is known. 3). The pocket is formed by bending a metal plate and is open upward. A temporary scaffold can be constructed by connecting a plurality of scaffold components by inserting the wedges into the pockets. A temporary scaffold having a connection structure with wedges and pockets is called a wedge-tight scaffold.

  As disclosed in Patent Documents 1 and 2, the support column has a plurality of pockets spaced apart from each other in the vertical direction, and one wedge can be inserted into one of the pockets and fixed. It has become. That is, the height of the cloth material or the like connected to the column is determined by the height of the pocket fixed to the column. Further, as disclosed in Patent Document 3, the metal plate material constituting the pocket is firmly fixed to the outer peripheral surface of the support by welding and cannot be removed from the support. It is common.

  Patent Documents 4 and 5 disclose scaffold clamps in which a pocket for inserting a wedge is integrally formed. In the scaffold clamp of Patent Document 4, a pocket is formed by a wedge frame portion formed by bending a plate material, and a fastener to be fastened is provided at one end of the wedge frame portion via a pin portion. The other end is provided with a fastening member. The clamp for scaffolding can be fixed to the support column by tightening the fastener to be fastened by the fastening member. Moreover, the clamp for scaffolding of patent document 5 is the one in which the left member and the right member formed by bending a plate material are connected in a hinged manner by a connecting shaft so that the left member and the right member can be opened and closed. The scaffolding clamp can be fixed to the column by tightening.

JP2013-104288A JP 2013-2167 A Japanese Patent Laid-Open No. 2006-79758 JP 2013-076315 A JP 09-242330 A

  By the way, since the clamps for scaffolding in Patent Documents 4 and 5 are fixed to the support column by the fastening member, the position of the pocket can be arbitrarily changed by changing the fastening position. There is an advantage that the degree of freedom can be increased compared to a fixed pocket.

  However, since the scaffold clamp of Patent Document 4 is formed with a pocket by bending the plate material constituting the wedge frame portion toward the radially outer side of the support column, the fastening force by the fastening member is reduced. When it is raised, the wedge frame portion is easily deformed so that the pocket of the wedge frame portion is opened, and as a result, there is a possibility that the fixing strength to the support column is lowered. When the pockets are opened, the wedges cannot be inserted, and the pockets are not fixed in place. For example, when two pockets are provided, the two pockets are point-symmetric with the center line of the support as the center of symmetry. It becomes difficult to place in.

  Also, since the scaffolding clamp of Patent Document 5 is formed by bending the left member and the right member toward the outside of the support column, when the fastening force by the fastening member is increased, the pocket is easily deformed so as to open. As a result, there is a possibility that the fixing strength with respect to the support column is lowered.

  Furthermore, when the plate material is bent as in Patent Documents 4 and 5, it is unavoidable that the springback phenomenon occurs, and the springback phenomenon may cause the pocket to be deformed to open.

  This invention is made | formed in view of this point, The place made into the objective is to make it possible to raise the fixing strength, enabling a wedge to be fixed to arbitrary positions.

  In order to achieve the above object, in the present invention, a notch having a shape along the outer peripheral surface of the support column is formed in a plate material extending in the radial direction of the support column, and the support column is formed by the first and second clamping members made of this plate material. Further, the wedge insertion hole or the wedge insertion notch is formed by removing a part of the plate material.

1st invention is for the scaffold used for the wedge binding type | mold scaffold constructed | assembled by inserting and fixing the wedge provided in the scaffold component to the insertion part provided in the support | pillar which consists of a circular pipe material extended in an up-down direction. The clamp is made of a plate material extending in the radial direction of the support column, and has a first notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column. On the other hand, it is formed by removing a part of the plate material in a shape along the outer peripheral surface of the support column, which includes a first clamping member that comes into contact with one side in the radial direction of the support column and a plate material extending in the radial direction of the support column. A second clamping member that has a second notch and abuts the outer circumferential surface of the column from the other radial side of the column, one end side of the first clamping member, and one end side of the second clamping member Those who are close to each other A connecting member that rotatably connects the other end side of the first clamping member and the other end side of the second clamping member, one end side of the first clamping member, and one end side of the second clamping member A fastening member that fastens the first clamping member in a direction approaching each other, and a wedge insertion hole or a wedge insertion serving as the insertion portion in the plate material constituting the first clamping member and the plate material constituting the second clamping member, respectively. The notch portion is formed by removing a part of the plate member, and the center portion in the width direction of the insertion portion formed in the first clamping member and the insertion portion formed in the second clamping member The central portion in the width direction is located on the same straight line extending in the radial direction of the support column, and is located on the other end side of the first clamping member along the upper surface on the other end side of the second clamping member. A bracket having a plate portion and a lower plate portion along the lower surface is provided. The connecting member includes a shaft attached to the other end side of the second clamping member in the vertical direction, and the upper plate portion and the lower plate portion of the bracket include an upper end portion and a lower end portion of the shaft. Insertion holes through which the respective parts are inserted are formed, and the distance between the shaft and the insertion portion of the second clamping member is around the column between the shaft and the insertion portion of the first clamping member. It is characterized by being set shorter than the distance .

  According to this configuration, when the first holding member and the second holding member are rotated in a direction in which the one end side of the first holding member and the one end side of the second holding member are separated from each other, one end side of the first holding member Since the space | interval with the one end side of a 2nd clamping member spreads, it becomes possible to arrange | position a support | pillar between a 1st clamping member and a 2nd clamping member. After the support column is disposed between the first clamping member and the second clamping member, the first clamping member and the second clamping member are arranged so that the one end side of the first clamping member and the one end side of the second clamping member approach each other. , The edge of the first notch portion of the first clamping member and the edge of the second notch portion of the second clamping member are respectively on one side and the other side in the radial direction of the column with respect to the outer peripheral surface of the column Abut each. And the edge part of the 1st notch part of a 1st clamping member and the 2nd clamping member of the 1st clamping member are fastened in the direction in which the one end side of a 1st clamping member and the one end side of a 2nd clamping member mutually approach by a fastening member The edge of the second notch is in pressure contact with the outer peripheral surface of the column to clamp the column in the radial direction. Thereby, the clamp for scaffolding will be in the state fixed with respect to the support | pillar.

  At this time, the first sandwiching member and the second sandwiching member are plate members extending in the radial direction of the support column, and a portion that contacts the outer peripheral surface of the support column is formed by removing a part of the plate material. Since the insertion hole portion or the wedge insertion notch portion can be formed by removing a part of the plate material, the plate material as in the conventional example is bent when the fastening force by the fastening member is applied. The deformation that opens compared to the member is suppressed, and the springback phenomenon does not occur. Therefore, the fixing strength is increased. The wedge insertion hole or the wedge insertion notch may be provided in both the first clamping member and the second clamping member, or may be provided only in one.

  In addition, since the first clamping member and the second clamping member are to clamp the struts in the radial direction, for example, the first clamping member and the second clamping member are moved in the height direction of the struts at the site of constructing the scaffold, It can be easily moved in the circumferential direction. Therefore, it is easy to change the position of the insertion portion.

Moreover , it becomes possible to insert and fix a wedge in the insertion part of a 1st clamping member and the insertion part of a 2nd clamping member, respectively. And it becomes possible to position the insertion part of a 1st clamping member and the insertion part of a 2nd clamping member on the same straight line extended in the radial direction of a support | pillar. Thereby, the scaffold component inserted into the insertion part of the first clamping member and the scaffold component inserted into the insertion part of the second clamping member are positioned on the same straight line.

Further , the distance between the shaft as the connecting member and the insertion portion of the second holding member is shorter than the distance between the shaft and the insertion portion of the first holding member, so that the first holding member And the second clamping member are asymmetrical. Accordingly, it is possible to arrange the shaft close to the outer peripheral surface of the support column while securing the size of the bracket and increasing the connection strength with the shaft.

According to a second aspect of the invention, the number of the plate members constituting the first clamping member is one, the number of the plate members constituting the second clamping member is one, and the same as the plate material constituting the first clamping member. It is arranged at a height.

  According to this structure, the structure of the clamp for scaffolding becomes simple by making the board | plate material which comprises the 1st clamping member, and the board | plate material which comprises the 2nd clamping member into one piece, respectively. And since the board | plate material which comprises the 1st clamping member and the board | plate material which comprises the 2nd clamping member are arrange | positioned at the same height, it becomes possible to clamp a support | pillar with sufficient balance.

The third invention is for a scaffold used in a wedge-tightened scaffold constructed by inserting and fixing a wedge provided on a scaffold component member into an insertion portion provided on a support column made of a circular pipe member extending in the vertical direction. The clamp is made of a plate material extending in the radial direction of the support column, and has a first notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column. On the other hand, it is formed by removing a part of the plate material in a shape along the outer peripheral surface of the support column, which includes a first clamping member that comes into contact with one side in the radial direction of the support column and a plate material extending in the radial direction of the support column. A second clamping member that has a second notch and abuts the outer circumferential surface of the column from the other radial side of the column, one end side of the first clamping member, and one end side of the second clamping member Those who are close to each other A connecting member that rotatably connects the other end side of the first clamping member and the other end side of the second clamping member, one end side of the first clamping member, and one end side of the second clamping member A plate member constituting at least one of the first clamping member and the second clamping member, and a wedge insertion hole portion or wedge insertion that serves as the insertion portion. A first support member is formed by removing a part of the plate member, and an edge of the first notch portion of the first holding member extends in a vertical direction along an outer peripheral surface of the support column. Is fixed.

  According to this configuration, the first support member is disposed so as to come into contact with the outer peripheral surface of the column in a state where the column is clamped by the first clamping member and the second clamping member. Thereby, when the 1st clamping member and the 2nd clamping member try to move to the direction which inclines, a 1st support member contacts with the outer peripheral surface of a support | pillar, and is supported by the said outer peripheral surface.

According to a fourth aspect of the present invention, a second support member extending in the vertical direction along the outer peripheral surface of the support column is fixed to an edge of the second notch portion of the second clamping member.

  According to this configuration, the second support member is disposed so as to come into contact with the outer peripheral surface of the column in a state where the column is clamped by the first clamping member and the second clamping member. Thereby, when the 1st clamping member and the 2nd clamping member try to move to the direction which inclines, a 2nd support member contacts with the outer peripheral surface of a support | pillar, and is supported by the said outer peripheral surface.

According to a fifth aspect of the present invention, at least one of the upper side and the lower side of the first support member is formed so as to be closer to the outer peripheral surface of the support column than the intermediate portion in the vertical direction of the first support member. And

  According to this configuration, since at least one of the upper side and the lower side of the first support member approaches the outer peripheral surface of the support column, the first support member comes into contact with the outer peripheral surface of the support column reliably. Further, at least one of the upper side and the lower side of the second support member may be formed so as to be closer to the outer peripheral surface of the support column than the intermediate portion in the vertical direction of the second support member.

According to a sixth aspect of the present invention, the upper and lower sides of the first support member are formed so as to be closer to the outer peripheral surface of the support column than the intermediate portion in the vertical direction of the first support member. The portion is positioned more radially outward of the support column than the edge of the first cutout portion.

  According to this configuration, since the upper side and the lower side of the first support member are close to the outer peripheral surface of the support column, the upper and lower sides of the first support member are surely in contact with the outer peripheral surface of the support column and the first clamping member and the first support member 2 Tilt of the clamping member is suppressed. At this time, the middle portion of the first support member in the vertical direction is located radially outward of the support column from the edge of the first cutout portion, so that the edge of the first cutout portion is surely attached to the outer peripheral surface of the support column. It becomes possible to arrange | position an insertion part in a predetermined position by making it contact.

  According to 1st invention, the 1st clamping member and the 2nd clamping member consist of the board | plate material extended in the radial direction of a support | pillar, and the part which contacts the outer peripheral surface of a support | pillar is made by removing a part of the said board | plate material. Further, the wedge insertion hole or the wedge insertion notch can also be formed by removing a part of the plate material. Accordingly, when the fastening force by the fastening member is applied, the first clamping member and the second clamping member are not easily deformed so as to open compared to a member obtained by bending a plate material as in the conventional example, and the spring back The phenomenon will not occur. Accordingly, the fixing strength can be increased while the wedge can be fixed at an arbitrary position.

Moreover , the insertion part is provided in each of the first clamping member and the second clamping member, and the center in the width direction of the insertion part of the first clamping member and the center in the width direction of the insertion part of the second clamping member are arranged in the radial direction of the column. Therefore, the scaffold constituent member inserted into the insertion portion of the first holding member and the scaffold constituent member inserted into the insertion portion of the second holding member can be positioned on the same straight line.

Further , the first clamping member and the second clamping member can be rotatably connected by a shaft penetrating the other end side of the second clamping member and a bracket provided on the other end side of the first clamping member. . In this case, since the distance between the shaft and the insertion portion of the second holding member around the column is set shorter than the distance between the shaft and the insertion portion of the first holding member, the distance between the first holding member and the second holding member is set. The sandwiching member can be asymmetrical. And while ensuring the magnitude | size of a bracket and improving the connection intensity | strength with an axis | shaft, an axis | shaft can be arrange | positioned close to the outer peripheral surface of a support | pillar, and the clamp for scaffolding can be made compact.

According to the second invention, the plate material constituting the first clamping member and the plate material constituting the second clamping member are each one, and these plate materials are arranged at the same height. It is possible to hold the struts with good balance while keeping it simple.

According to the 3rd and 4th invention, the inclination of the 1st clamping member and the 2nd clamping member can be suppressed.

According to 5th invention, the inclination of a 1st clamping member and a 2nd clamping member can be made still smaller.

According to the sixth aspect of the invention, the upper and lower sides of the first support member are formed so as to approach the outer peripheral surface of the support column, and the intermediate portion in the vertical direction of the first support member is closer to the support column than the edge of the first notch. Since it is positioned radially outward, the edge of the first notch portion is securely brought into contact with the outer peripheral surface of the support column while the inclination of the first clamping member and the second clamping member is suppressed, so that the insertion portion is in a predetermined position. Can be arranged.

It is the perspective view which looked at the clamp for scaffolds concerning Embodiment 1 of the present invention from the upper part. It is the perspective view which looked at the clamp for scaffolds concerning Embodiment 1 from the lower part. It is a perspective view explaining the case where a wedge binding type scaffold is built using the clamp for scaffolds concerning Embodiment 1. FIG. 3 is a plan view of a scaffold clamp according to Embodiment 1. FIG. It is a front view of the clamp for scaffolds which concerns on Embodiment 1. FIG. It is a left view of the clamp for scaffolds concerning Embodiment 1. It is a top view which shows the state before fastening the clamp for scaffolds which concerns on Embodiment 1. FIG. It is a top view in the state where the clamp for scaffolds concerning Embodiment 1 was developed. It is the IX-IX sectional view taken on the line in FIG. It is the XX sectional view taken on the line in FIG. FIG. 6 is a view corresponding to FIG. 4 according to a modification of the first embodiment. FIG. 3 is a view corresponding to FIG. 1 according to Embodiment 2 of the present invention. FIG. 3 is a view corresponding to FIG. 2 according to the second embodiment. FIG. 6 is a view corresponding to FIG. 4 according to the second embodiment. FIG. 6 is a diagram corresponding to FIG. 5 according to the second embodiment. FIG. 7 is a view corresponding to FIG. 6 according to the second embodiment. It is the XVII-XVII sectional view taken on the line in FIG. It is the XVIII-XVIII sectional view taken on the line in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
FIG. 1 is a perspective view of a wedge-coupled scaffolding clamp 1 according to Embodiment 1 of the present invention viewed from above, and FIG. 2 is a perspective view of the wedge-coupled scaffolding clamp 1 viewed from below. As shown in FIG. 3, the wedge-tight scaffolding clamp 1 is a member used when, for example, the cloth material 100 is coupled to the support column 200. For example, cloth material 100, support column 200, cloth frame (not shown), leading handrail brace (not shown), skirting board (not shown), wall connection (not shown), jack (not shown), stairs (Not shown) and a wedge-tight scaffold clamp 1 or the like forms a wedge-tight scaffold. Each member constituting the wedge-tightened scaffold is a scaffold component.

  The wedge binding type scaffold is constructed by inserting and fixing the wedges 101 provided at both ends of the cloth material 100 shown in FIG. 3 into the pockets 201 and the insertion portions 15 and 25 provided in the support column 200. Although not shown, wedges are also provided on the cloth frame, the preceding handrail brace, etc., and these wedges can be inserted into the pocket 201 and the insertion portions 15 and 25 and fixed. The shape and structure of the wedge 101 provided at the end of the cloth material 100 are various. The present invention can be applied to any wedge 101.

  The support column 200 is made of a metal circular pipe member and extends in the vertical direction. The support column 200 may be arranged so as to extend vertically or may be arranged so as to be inclined. The cloth material 100 is also composed of a circular pipe member similar to that of the support column 200, and is usually disposed so as to extend in a substantially horizontal direction, but may be inclined.

(Wedge binding-type scaffolding clamp 1 overall configuration)
As shown in FIGS. 1 and 2, the wedge-tightened scaffold clamp 1 includes a first clamping member 10 and a second clamping member 20, and a first clamping member 10 and a second clamping member that clamp the strut 200 in the radial direction. And a fastening member 40 that fastens the first clamping member 10 and the second clamping member 20 to each other. As shown in FIGS. 1 to 5, the first clamping member 10 and the second clamping member 20 abut against the outer peripheral surface of the support column 200 from one side and the other side in the radial direction (horizontal direction) of the support column 200. By this, it is a member which clamps the support | pillar 200 to radial direction.

  In the description of this embodiment, as shown in FIG. 3, when the wedge-tightened scaffold clamp 1 is attached to the support column 200, the lower side of the wedge-tightened scaffold clamp 1 is simply referred to as “lower”. The upper side of the wedge-tightened scaffolding clamp 1 is simply referred to as “up”. Further, as shown in FIGS. 4 and 5, the side of the first holding member 10 and the second holding member 20 that is connected by the connecting member 30 is the “base end side” of the first holding member 10 and the second holding member 20. The opposite side of the first clamping member 10 and the second clamping member 20 to the side connected by the coupling member 30 is referred to as the “front end side” of the first clamping member 10 and the second clamping member 20. . The distal end sides of the first clamping member 10 and the second clamping member 20 correspond to one end side of the present invention, and the proximal end sides of the first clamping member 10 and the second clamping member 20 correspond to the other end side of the present invention. The direction of the wedge-coupled scaffolding clamp 1 is defined in this way only for the convenience of explanation, and does not limit the state of use of the wedge-coupled scaffolding clamp 1, and postures other than the illustrated posture It is also possible to use the wedge-tight scaffolding clamp 1.

  1, 2, 4 to 6 show a case where the wedge-tightened scaffolding clamp 1 is in use, and FIG. 7 shows a state where fastening by the fastening member 40 is not performed. FIG. 8 shows a state in which the first clamping member 10 and the second clamping member 20 are rotated in a direction in which the distal end sides of the first clamping member 10 and the second clamping member 20 are separated from each other, and are attached to the column 200. It is the state before being done. Thus, each part can be rotated.

(Configuration of the first clamping member 10)
As shown in FIGS. 1 to 5, the first clamping member 10 has one first plate member 11, a base end side bracket 12, and a vertical plate portion 14, and is based on the first plate member 11. The end side bracket 12 and the vertical plate part 14 are fixed. The 1st board | plate material 11, the base end side bracket 12, and the vertical board part 14 are comprised, for example with the steel plate. The first clamping member 10 is provided with only one first plate member 11.

  The first plate member 11 is formed so as to extend in the radial direction of the support column 200 in a state of being attached to the support column 200. For example, the thickness is set to about 8 mm to 10 mm, and the first plate member 11 is almost formed by a fastening force by a fastening member 40 described later. It is configured with high rigidity so as not to be deformed. A first notch portion 11 a formed by removing a part of the first plate material 11 into a shape along the outer peripheral surface of the support column 200 is provided on the side of the first plate material 11 that contacts the outer peripheral surface of the support column 200. ing. The first cutout portion 11 a extends in an arc shape, and substantially the entire circumferential direction of the first cutout portion 11 a can come into contact with the outer peripheral surface of the support column 200 from one side in the radial direction. When the fastening force by the fastening member 40 is applied, the peripheral edge portion of the first notch portion 11 a in the first plate member 11 is strongly pressed against the outer peripheral surface of the support column 200. At this time, since only one first plate member 11 is provided, the contact surface pressure of the first plate member 11 with respect to the column 200 can be sufficiently increased. Moreover, the edge part on the opposite side to the side contact | abutted in the outer peripheral surface of the support | pillar 200 in the 1st board | plate material 11 is also extended in circular arc shape. When providing the 1st notch part 11a in the 1st board | plate material 11, it forms by cutting or excising a part of the said 1st board | plate material 11 with a conventionally well-known cutting device. As a cutting device, a laser cutter etc. can be mentioned, for example.

  A wedge insertion hole 11b into which the wedge 101 of the cloth material 100 is inserted is formed in the intermediate portion in the circumferential direction of the first plate member 11. The wedge insertion hole 11b is formed by a through-hole penetrating the first plate member 11 in the thickness direction (vertical direction), and is therefore formed by removing a part of the first plate member 11. is there. When forming the wedge insertion hole 11b, the above laser cutter or the like can be used, but other drilling devices can also be used. Thereby, the wedge insertion hole 11b can be provided by removing a part of the first plate member 11.

  By inserting the wedge 101 into the wedge insertion hole 11 b from above the first plate member 11, the wedge 101 can be connected to the first clamping member 10. The shape of the wedge insertion hole 11b can be set according to the shape and structure of the wedge 101 to be inserted. Further, the position of the wedge insertion hole 11b may be shifted from the illustrated position in the radial direction or may be shifted in the circumferential direction. The number of the wedge insertion holes 11b can also be set arbitrarily.

  An edge portion on the base end side of the first plate member 11 extends linearly, and a base end side bracket 12 is fixed to an edge portion on the base end side of the first plate member 11. The base end bracket 12 is formed by bending a plate material thinner than the first plate material 11. The proximal end bracket 12 extends along the upper plate portion 12 a extending along the upper surface on the proximal end side of the second plate member 21 constituting the second holding member 20, and the lower surface on the proximal end side of the second plate member 21. And a connecting plate portion 12c extending from the edge of the upper plate portion 12a to the edge of the lower plate portion 12b and connecting the upper plate portion 12a and the lower plate portion 12b. The connecting plate portion 12c is fixed to the edge portion on the proximal end side of the first plate member 11 by welding or the like. In this state, the upper plate portion 12 a is located above the upper surface of the first plate material 11, and the lower plate portion 12 b is located below the lower surface of the first plate material 11. The upper plate portion 12a and the lower plate portion 12b are provided so as to protrude in the circumferential direction from an edge portion on the proximal end side of the first plate member 11, and the first plate member 12a and the lower plate portion 12b are provided between the upper plate portion 12a and the lower plate portion 12b. The base end side of the two plate materials 21 is inserted and connected by a connecting member 30 described later.

  On the other hand, a vertical plate 14 formed thinner than the first plate 11 is provided at the tip of the first plate 11. The vertical plate member 14 is fixed to the distal end portion of the first plate member 11 by welding or the like, and extends in the vertical direction from the distal end portion of the first plate member 11. The upper portion of the vertical plate member 14 extends upward from the upper surface of the first plate member 11, and the lower portion of the vertical plate member 14 extends downward from the lower surface of the first plate member 11. Further, the vertical plate member 14 protrudes radially outward from the distal end portion of the first plate member 11.

  The vertical plate member 14 is formed with a shaft portion insertion notch portion 14a for inserting a fastening shaft portion 41 described later. The shaft portion insertion cutout portion 14 a is open toward the distal end side of the vertical plate member 14. An upper bent portion 14b and a lower bent portion 14c are formed at the distal end portion of the vertical plate member 14 above and below the shaft portion insertion cutout portion 14a, respectively. The upper bent portion 14b and the lower bent portion 14c are bent in a direction away from the second holding member 20 in use. By forming the upper bent portion 14b and the lower bent portion 14c, a nut 42 in a fastening state, which will be described later, is engaged with the upper bent portion 14b and the lower bent portion 14c, and the fastening shaft portion 41 is a notch portion for inserting a shaft portion. 14a becomes difficult to come off.

(Configuration of the second clamping member 20)
As shown in FIGS. 1 to 5, the second clamping member 20 includes a single second plate member 21 and a distal end side bracket 22, and the distal end side bracket 22 is fixed to the second plate member 21. Yes. The 2nd board | plate material 11 and the front end side bracket 12 are comprised, for example with the steel plate. The second clamping member 20 is provided with only one second plate material 21. The 1st board | plate material 11 and the 2nd board | plate material 21 are arrange | positioned at the same height.

  The second plate 21 is formed so as to extend in the radial direction of the column 200 in a state of being attached to the column 200, and has the same thickness as the first plate 11. A second notch 21 a formed by removing a part of the second plate 21 into a shape along the outer periphery of the support 200 is provided on the side of the second plate 21 that contacts the outer periphery of the support 200. ing. The second notch portion 21 a extends in an arc shape, and substantially the entire circumferential direction of the second notch portion 21 a can be brought into contact with the outer peripheral surface of the support column 200 from the other side in the radial direction. The edge of the second plate 21 opposite to the side in contact with the outer peripheral surface of the support column 200 also extends in an arc shape.

  A wedge insertion hole 21 b into which the wedge 101 of the cloth material 100 is inserted is formed in the intermediate portion in the circumferential direction of the second plate material 21. The wedge insertion hole 21b is formed by a through-hole penetrating the second plate member 21 in the thickness direction (vertical direction), and is therefore formed by removing a part of the second plate member 21. is there. By inserting the wedge 101 into the wedge insertion hole 21 b from above the second plate member 21, the wedge 101 can be connected to the second clamping member 20. The shape of the wedge insertion hole 21b can be set according to the shape and structure of the wedge 101 to be inserted. Further, the position of the wedge insertion hole 21b may be shifted from the illustrated position in the radial direction or may be shifted in the circumferential direction. The wedge insertion hole 21b of the second clamping member 20 and the wedge insertion hole 11b of the first clamping member 10 have the same shape.

  As shown in FIG. 4, the wedge insertion hole 11b of the first clamping member 10 and the wedge insertion hole 21b of the second clamping member 20 have the axis C of the support column 200 as the center of symmetry. They are arranged so as to be point-symmetric. Further, the central portion in the width direction W1 of the wedge insertion hole 11b of the first clamping member 10 and the central portion in the width direction W2 of the wedge insertion hole 21b of the second clamping member 20 are It is located on the same straight line D extending in the radial direction. The straight line D is an imaginary line that extends in the radial direction through the axis C of the support column 200.

  The edge part on the front end side of the second plate material 21 extends linearly, and the front end side bracket 22 is fixed to the edge part on the front end side of the second plate material 21. The front end side bracket 22 is formed by bending a plate material thinner than the second plate material 21. The front end side bracket 22 is an upper plate portion 22a, a lower plate portion 22b, a connecting plate that extends from an edge portion of the upper plate portion 22a to an edge portion of the lower plate portion 22b, and connects the upper plate portion 22a and the lower plate portion 22b. Part 22c. The connecting plate portion 22c is fixed to the edge portion on the distal end side of the second plate member 21 by welding or the like. In this state, the upper plate portion 22 a is located above the upper surface of the second plate material 21, and the lower plate portion 22 b is located below the lower surface of the second plate material 21. The upper plate portion 22a and the lower plate portion 22b are provided so as to protrude outward in the radial direction of the support column 200 from the tip end portion of the second plate material 21.

(Configuration of connecting member 30)
As shown in FIG. 9, the connecting member 30 can be constituted by a shaft made of, for example, a metal round bar, and penetrates the base end side of the second plate member 21 of the second holding member 20 in the vertical direction. Attached. On the base end side of the second plate member 21, an intermediate insertion hole 21 c is formed through which the intermediate portion in the vertical direction of the connecting member 30 is inserted. The upper end portion of the connecting member 30 passes through the upper plate portion 12 a of the base end side bracket 12, and the lower end portion of the connecting member 30 passes through the lower plate portion 12 b of the base end side bracket 12. That is, the upper plate portion 12a of the base end side bracket 12 is formed with an upper insertion hole 12d through which the upper end portion of the connection member 30 is inserted, and the lower plate portion 12b of the base end side bracket 12 is formed at the lower end of the connection member 30. A lower insertion hole 12e through which the portion is inserted is formed. The upper insertion hole 12d and the lower insertion hole 12e of the base end side bracket 12 and the intermediate insertion hole 21c of the second plate member 21 are located on the same axis. Further, the upper insertion hole 12d and the lower insertion hole 12e of the base end side bracket 12 and the intermediate insertion hole 21c of the second plate member 21 are set to have the same diameter.

  The connecting member 30 is rotatable in a state of being inserted into the upper insertion hole 12d, the lower insertion hole 12e, and the intermediate insertion hole 21c. Therefore, as shown in FIG. 8, for example, the first holding member 10 is fixed, the second holding member 20 is rotated around the connecting member 30, or the second holding member 20 is fixed, It becomes possible to rotate the first clamping member 10 around the connecting member 30. That is, the proximal end side of the first clamping member 10 and the proximal end side of the second clamping member 20 are coupled by the coupling member 30, and in this coupled state, the distal end side of the first clamping member 10 and the second clamping member are connected. It becomes possible to rotate in a direction in which the tip end side of 20 is in contact with and away from each other.

  As shown in FIG. 9, the upper end portion of the connecting member 30 protrudes upward from the upper surface of the upper plate portion 12 a of the base end side bracket 12. An upper retaining ring 31 is fitted to the upper end portion of the connecting member 30. Further, the lower end portion of the connecting member 30 protrudes downward from the lower surface of the lower plate portion 12 b of the base end side bracket 12. A lower retaining ring 32 is fitted to the lower end portion of the connecting member 30. Thereby, the connecting member 30 does not fall off from the first clamping member 10 and the second clamping member 20.

(Configuration of fastening member 40)
The fastening member 40 includes at least a fastening shaft portion 41, a nut 42, a support shaft 43, an upper retaining ring 44, and a lower retaining ring 45 (shown in FIG. 2). As shown in FIG. 1 and the like, a large diameter portion 41 a is formed at the proximal end portion of the fastening shaft portion 41. The portion other than the large-diameter portion 41a in the fastening shaft portion 41 is composed of a screw rod having a thread groove formed continuously on the outer peripheral surface, and can be composed of, for example, a bolt shaft portion. The nut 42 is a member that is screwed into the fastening shaft portion 41. The flange portion 42 a of the nut 42 is in contact with the peripheral edge portion of the shaft portion insertion notch portion 14 a in the vertical plate portion 14.

  The support shaft 43 is a member for supporting the large-diameter portion 41 a of the fastening shaft portion 41 so as to be rotatable with respect to the distal end side of the second clamping member 20. The support shaft 43 is formed of a round bar that extends in the vertical direction in the same manner as the connection member 30. The intermediate portion in the vertical direction of the support shaft 43 penetrates the large-diameter portion 41a of the fastening shaft portion 41 in the vertical direction, so that the support shaft 43 and the large-diameter portion 41a of the fastening shaft portion 41 are relatively rotatable. It has become. The upper end portion of the support shaft 43 passes through the upper plate portion 22a of the distal end side bracket 22 and protrudes upward from the upper surface of the upper plate portion 22a. An upper retaining ring 44 is fitted to the upper end portion of the support shaft 43. ing. On the other hand, the lower end portion of the support shaft 43 penetrates the lower plate portion 22b of the front end side bracket 22 and protrudes downward from the lower surface of the lower plate portion 22b. Is fitted. The support shaft 43 and the distal end side bracket 22 are relatively rotatable.

  By rotating the fastening shaft portion 41, as shown in FIG. 1 and the like, the fastening shaft portion 41 is inserted into the shaft portion insertion notch portion 14a of the vertical plate member 14, and as shown in FIG. The portion 41 can be switched to a state in which the portion 41 is removed from the shaft portion insertion notch portion 14 a of the vertical plate member 14.

(How to use the clamp 1 for scaffolding)
When attaching the scaffolding clamp 1 to the support column 200, first, as shown in FIG. 8, the first clamping member 10 and the second clamping member are arranged so that the distal ends of the first clamping member 10 and the second clamping member 20 are separated from each other. The member 20 is rotated. Thereafter, the first clamping member 10 and the second clamping member 20 are rotated so as to sandwich the column 200 in the radial direction, and as shown in FIG. 7, the leading ends of the first clamping member 10 and the second clamping member 20. Bring sides closer together. Then, the peripheral edge portion of the first notch portion 11 a of the first plate member 11 contacts the outer peripheral surface of the support column 200, and the peripheral edge portion of the second notch portion 21 a of the second plate member 21 contacts the outer peripheral surface of the support column 200.

  Next, the fastening shaft portion 41 of the fastening member 40 is rotated, and the fastening shaft portion 41 is inserted into the shaft portion insertion notch portion 14a of the vertical plate member 14 as shown in FIG. When the nut 42 is tightened in a state where the fastening shaft portion 41 is inserted into the shaft portion insertion notch portion 14a of the vertical plate member 14, the leading end side of the first sandwiching member 10 and the leading end side of the second sandwiching member 20 approach each other. To be concluded. Accordingly, the peripheral edge portion of the first notch portion 11a of the first plate member 11 is in strong contact with the outer peripheral surface of the support column 200, and the peripheral edge portion of the second notch portion 21a of the second plate material 21 is strongly applied to the outer peripheral surface of the support column 200. The scaffolding clamp 1 does not move up and down and does not rotate in the circumferential direction of the support column 200.

(Effect of embodiment)
As described above, according to this embodiment, the first clamping member 10 and the second clamping member 20 are rotated in the direction in which the distal end side of the first clamping member 10 and the distal end side of the second clamping member 20 are separated from each other. Then, since the space | interval of the front end side of the 1st clamping member 10 and the front end side of the 2nd clamping member 20 spreads, it is easy to arrange | position the support | pillar 200 between the 1st clamping member 10 and the 2nd clamping member 20. Can do. After the support column 200 is disposed between the first clamping member 10 and the second clamping member 20, the first clamping member is moved in a direction in which the distal end side of the first clamping member 10 and the distal end side of the second clamping member 20 approach each other. 10 and the second clamping member 20 are rotated, the edge of the first notch 11 a of the first clamping member 10 and the edge of the second notch 21 a of the second clamping member 20 are respectively on the outer peripheral surface of the support column 200. The abutment 200 abuts from one side and the other side in the radial direction. And the edge part of the 1st notch part 11a of the 1st clamping member 10 is fastened in the direction which mutually approaches the front end side of the 1st clamping member 10 and the front end side of the 2nd clamping member 20 with the fastening member 40, and The edge of the second notch portion 21a of the second clamping member 20 is in pressure contact with the outer peripheral surface of the column 200 to clamp the column 200 in the radial direction. Thereby, the clamp 1 for scaffolds will be in the state fixed with respect to the support | pillar 200. FIG.

  At this time, the 1st board | plate material 11 and the 2nd board | plate material 21 which comprise the 1st clamping member 10 and the 2nd clamping member 20, respectively are board | plate materials extended in the radial direction of the support | pillar 200, and the part which contacts the outer peripheral surface of the support | pillar 200 Is formed by removing a part of the plate members 11 and 21, and the wedge insertion holes 11b and 21b are also formed by removing a part of the plate members 11 and 21, When a fastening force is applied by the fastening member 40, deformation that opens compared to a member obtained by bending a plate material as in the conventional example is suppressed, and a springback phenomenon does not occur. Therefore, the fixing strength of the scaffold clamp 1 can be increased.

  Moreover, since the 1st clamping member 10 and the 2nd clamping member 20 clamp the support | pillar 200 to radial direction, the height direction of the support | pillar 200 is used for the 1st clamping member 10 and the 2nd clamping member 20 in the spot which constructs | assembles a scaffold, for example. It is possible to easily move in the circumferential direction of the support column 200. Therefore, it is possible to easily change the positions of the wedge insertion holes 11b and 21b.

  In the said Embodiment 1, although the insertion part in which the wedge 101 is inserted is comprised by the hole parts 11b and 21b for wedge insertion, it is not restricted to this, As shown in FIG. The wedge-inserted notches 11g and 21g may be formed by removing a part. The wedge insertion notches 11g and 21g are opened to the outer peripheral surface side of the support column 200, respectively.

(Embodiment 2)
12 to 18 show a wedge-tightened scaffold clamp 1 according to Embodiment 2 of the present invention. The wedge clamp type scaffolding clamp 1 of the second embodiment is different from the first embodiment in that it includes support members 51 to 53. Hereinafter, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and different parts will be described in detail.

First support members 51 and 52 extending in the vertical direction along the outer peripheral surface of the support column 200 are fixed to the edge portion of the first notch portion 11 a of the first plate member 11 of the first clamping member 10. The 1st support members 51 and 52 are comprised, for example with the steel plate etc., and have comprised long plate shape in the up-down direction.
Concave portions 11d and 11e into which the first support members 51 and 52 are fitted are formed at the edge of the first cutout portion 11a. The intermediate portions in the vertical direction of the first support members 51 and 52 are fixed to the first plate member 11 by welding or the like while being fitted in the recesses 11d and 11e. As shown in FIG. 17, the upper portions 51 a and 52 a and the lower portions 51 b and 52 b of the first support members 51 and 52 are formed more vertically than the intermediate portions 51 c and 52 c in the vertical direction of the first support members 51 and 52. It is formed so as to approach the outer peripheral surface. That is, the upper portions 51a and 52a of the first support members 51 and 52 are bent in a direction approaching the outer peripheral surface of the support column 200, and the lower portions 51b and 52b of the first support members 51 and 52 are also formed of the support columns. It is bent and molded in a direction approaching the outer peripheral surface of 200. The intermediate portions 51c and 52c in the vertical direction of the first support members 51 and 52 are positioned outward in the radial direction of the support column 200 from the edge of the first cutout portion 11a. Thereby, in a state where the scaffolding clamp 1 is attached to the support column 200, the intermediate portions 51 c and 52 c in the vertical direction of the first support members 51 and 52 are separated from the outer peripheral surface of the support column 200. Note that only one of the upper portions 51 a and 52 a and the lower portions 51 b and 52 b of the first support members 51 and 52 may be bent in a direction approaching the outer peripheral surface of the support column 200. By providing the first support members 51 and 52, the first support members 51 and 52 come into contact with the outer peripheral surface of the column 200 in a state where the column 200 is clamped by the first clamping member 10 and the second clamping member 20. Be placed. Thereby, when the 1st clamping member 10 and the 2nd clamping member 20 are going to move to the direction which inclines, the 1st support members 51 and 52 contact | abut to the outer peripheral surface of the support | pillar 200, and are supported by the said outer peripheral surface. . The number of first support members may be one, or may be three or more. Further, the first support members 51 and 52 may not be bent.

  Further, a second support member 53 extending in the vertical direction along the outer peripheral surface of the column 200 is fixed to the edge of the second notch 21 a of the second plate member 21 of the second holding member 20. The second support member 53 is configured similarly to the first support members 51 and 52. A recess 21d into which the second support member 53 is fitted is formed at the edge of the second notch 12a. An intermediate portion in the vertical direction of the second support member 53 is fixed to the second plate member 21 by welding or the like while being fitted in the recess 21d. Similar to the first support members 51 and 52, the second support member 53 is bent and formed so that the upper portion and the lower portion approach the outer peripheral surface of the support column 200. The number of second support members may be two or more. Further, only one of the first support members 51 and 52 and the second support member 53 may be provided.

  Further, as shown in FIG. 14, the distance around the support column 200 between the connecting member 30 and the center portion in the width direction of the wedge insertion hole 21 b of the second holding member 20 is the distance between the connecting member 30 and the first holding member 10. It is set shorter than the distance around the column 200 with the wedge insertion hole 11b. Thereby, since the 1st board | plate material 11 of the 1st clamping member 10 and the 2nd board | plate material 21 of the 2nd clamping member 20 become asymmetrical shape, the magnitude | size of the base end side bracket 12 is ensured, and the connection member 30 is connected. While increasing the connection strength, the connection member 30 can be disposed close to the outer peripheral surface of the support column 200. As a result, the scaffolding clamp 1 can be made compact.

  According to the second embodiment, similarly to the first embodiment, the fixing strength can be increased while the wedge can be fixed at an arbitrary position.

  In the above-described embodiment, the fastening member 40 is configured to be able to obtain a fastening force with the screw and the nut 42. However, the present invention is not limited to this, but although not illustrated, the fastening force can be obtained using wedges. You may comprise as follows. For example, an opening portion into which a wedge can be inserted is formed in the fastening shaft portion 41, and the wedge portion is inserted into the opening portion and brought into pressure contact with the vertical plate member 14, whereby the distal end side of the first clamping member 10 and the second clamping member are formed. The front end side of 20 can be fastened in a direction approaching each other. The fastening member of this invention should just be a structure which can fasten the 1st clamping member 10 and the 2nd clamping member 20, and is not restricted to the structure mentioned above.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the present invention can be used, for example, when a temporary scaffold for workers is constructed at a construction site of various buildings or a civil engineering site.

DESCRIPTION OF SYMBOLS 1 Wedge binding type | formula clamp 10 First clamp member 11 1st board | plate material 11a 1st notch part 11b Wedge insertion hole part 20 2nd clamping member 21 2nd board | plate material 21a 2nd notch part 21b Wedge insertion hole part 30 Connecting member 40 Fastening member 100 Cloth (scaffolding component)
101 Wedge

Claims (6)

In the clamp for a scaffold used for the wedge-tightened scaffold constructed by inserting and fixing the wedge provided in the scaffold component member into the insertion portion provided in the support column made of a circular pipe member extending in the vertical direction,
It consists of a plate material extending in the radial direction of the support column, and has a first notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column, A first clamping member that abuts from one side of the strut in the radial direction;
It is made of a plate material extending in the radial direction of the support column, and has a second notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column. A second clamping member that abuts from the other side of the strut in the radial direction;
The other end side of the first clamping member and the other end side of the second clamping member are pivotable in a direction in which one end side of the first clamping member and one end side of the second clamping member are in contact with and away from each other. A connecting member to be connected;
A fastening member that fastens one end side of the first clamping member and one end side of the second clamping member in a direction approaching each other;
A wedge insertion hole or a wedge insertion cut-out portion serving as the insertion portion removes a part of the plate material from the plate material constituting the first clamping member and the plate material constituting the second clamping member, respectively . Formed ,
The center part in the width direction of the insertion part formed in the first clamping member and the center part in the width direction of the insertion part formed in the second clamping member are the same straight line extending in the radial direction of the column. Located on the line,
On the other end side of the first sandwiching member, a bracket provided with an upper plate portion along the upper surface on the other end side of the second sandwiching member and a lower plate portion along the lower surface is provided,
The connecting member is composed of a shaft attached through the other end side of the second clamping member in the vertical direction,
The upper plate portion and the lower plate portion of the bracket are formed with insertion holes through which the upper end portion and the lower end portion of the shaft are inserted, respectively.
The distance between the shaft and the insertion portion of the second clamping member is set shorter than the distance between the shaft and the insertion portion of the first clamping member. Scaffolding clamp. The scaffold clamp according to claim 1 ,
The plate material constituting the first clamping member is one sheet,
The scaffold clamp according to claim 1, wherein the plate member constituting the second clamping member is a single plate and is disposed at the same height as the plate member constituting the first clamping member. In the clamp for a scaffold used for the wedge-tightened scaffold constructed by inserting and fixing the wedge provided in the scaffold component member into the insertion portion provided in the support column made of a circular pipe member extending in the vertical direction,
It consists of a plate material extending in the radial direction of the support column, and has a first notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column, A first clamping member that abuts from one side of the strut in the radial direction;
It is made of a plate material extending in the radial direction of the support column, and has a second notch formed by removing a part of the plate material in a shape along the outer periphery surface of the support column. A second clamping member that abuts from the other side of the strut in the radial direction;
The other end side of the first clamping member and the other end side of the second clamping member are pivotable in a direction in which one end side of the first clamping member and one end side of the second clamping member are in contact with and away from each other. A connecting member to be connected;
A fastening member that fastens one end side of the first clamping member and one end side of the second clamping member in a direction approaching each other;
In the plate material constituting at least one of the first clamping member and the second clamping member, the wedge insertion hole or the wedge insertion notch portion serving as the insertion portion removes a part of the plate material. Formed,
A scaffolding clamp , wherein a first support member extending in a vertical direction along an outer peripheral surface of the support column is fixed to an edge of the first notch portion of the first clamping member . The scaffold clamp according to claim 3 ,
A scaffolding clamp, wherein a second support member extending in a vertical direction along an outer peripheral surface of the support column is fixed to an edge of the second notch portion of the second holding member. The scaffold clamp according to claim 3 or 4 ,
The scaffolding clamp, wherein at least one of the upper side and the lower side of the first support member is formed so as to be closer to the outer peripheral surface of the support column than an intermediate portion in the vertical direction of the first support member. The scaffold clamp according to claim 5 ,
The upper side and the lower side of the first support member are formed so as to be closer to the outer peripheral surface of the support column than the intermediate portion in the vertical direction of the first support member,
The scaffold clamp according to claim 1, wherein an intermediate portion in the vertical direction of the first support member is positioned radially outward of the support column with respect to an edge portion of the first cutout portion.

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