JP5613860B1 - Tightening device for wedge-tight scaffolding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding device in a wedge binding type scaffold having a simple structure. A binding device in a wedge binding type scaffold includes a receiving metal member fixed to a support column and a locking metal member provided at an end portion of an arm lumber. The receiving bracket is U-shaped when viewed from the plane. The locking bracket has a vertically long wedge with a top edge that has a substantially horizontal upper edge, and a rearward protruding peripheral edge on the vertical wall. A downward stepped portion that is hooked by the receiving bracket is formed below, and a lower portion is formed as a receiving bracket penetration portion. Through the long hole opened to the front upper end of the front and the notch formed at the front lower end of the arm lumber, the upper end is left upward and the rust is fitted, and the lower end is the lower end of the rear protruding peripheral edge And a wedge guide member adapted to come into contact with the rear surface. [Selection] Figure 3

Description

  The present invention relates to a binding device in a wedge binding type scaffold.

In this specification, in the relationship between the support column and the arm wood, the front side refers to the side with the support column to be tightened, and the back side refers to the side with the arm wood to be tightened.

  A binding device in a wedge-tightening scaffold previously proposed by the applicant of the present application is disclosed in Patent Document 1 below.

The binding device in this binding-type scaffold is embedded so that the front side is exposed at the end of the arm lumber passed between the support metal and the two support columns fixed to the outer periphery of the predetermined height of the support column, and It consists of a locking bracket that can be locked to the receiving bracket.The receiving bracket is U-shaped when viewed from the plane, and the central wall is inclined forward and downward. A vertical plate-shaped wedge having a front edge with a vertical portion that touches and a rear edge that is inclined to the front and downward at substantially the same inclination as the central wall of the receiving bracket, and a part protruding downward from the arm wood and received when viewed from a plane A wedge guide member with a U-shape that fits into the bracket, the central wall is inclined forward and downward at the same inclination as the receiving bracket, and a wedge guide member that is inserted in a vertically movable manner. It is interposed between the central walls and has a top edge. And a swing bar that is attached to the upper part of the guide member so as to be swingable back and forth, and is provided with a retaining protrusion that protrudes rearward at the lower end part, and is biased toward the wedge side by a push spring, Longitudinal hole with a trailing edge where the wedge escape prevention bar contacts the side walls of the wedge guide member, and the wedge escape prevention bar is the vertical length required for vertical movement of the wedge that only crosses the wedge. Alternatively, a forward notch is formed in the wedge, and the lower part from the arm wood of the wedge guide member is an insertion part to the receiving metal fitting, and the insertion part in the central wall of the wedge guide member has a front and rear penetrating retaining protrusion storage part In the state in which the insertion portion of the wedge guide member is inserted into the receiving metal fitting and the end of the arm lumber is received by the upper end of the receiving metal fitting, the center wall of the receiving metal fitting is opposed to the retaining protrusion receiving hole. Thus, a retaining protrusion receiving portion is formed, and the retaining protrusion receiving portion has an upper edge on which the retaining protrusion is hooked when the locking metal fitting is about to be pulled upward from the receiving metal. , Swings backward against the spring force when tightening and pushes the retaining protrusion into the retaining protrusion receiving part of the metal fitting, and swings forward by the spring force when releasing tightening and receives the retaining protrusion to remove the metal fitting The distance between the central wall of the wedge guide member and the wedge is determined so as to be pulled out from the stop projection receiving portion.

JP 2008-280743 A

According to the device disclosed in Patent Document 1, the end of the arm lumber is directly received at the upper end of the metal fitting, and the arm lumber does not wobble due to the wedge action, so that the arm lumber is held firmly and level, Moreover, even if wind pressure is applied from below using a sheet steel floor cloth, the retaining protrusion on the side of the locking bracket will catch on the upper edge of the retaining protrusion receiving portion of the receiving bracket. There is an advantage that there is no risk of detachment and a cloth with a floor made of a thin steel plate rather than an expanded metal can be used, but the structure is slightly complicated.

An object of the present invention is to provide a binding device in a wedge-type scaffold having a simple structure.

The binding device in the wedge-binding scaffold according to the first aspect of the present invention includes a receiving metal member fixed to the outer periphery of a predetermined height of the support column and a locking metal member provided at an end portion of the arm wood passed between the two support columns. The receiving bracket is U-shaped when viewed from the plane, and the central wall is inclined forward and downward, and the locking bracket includes a front projecting portion and the upper edge including the upper end is substantially horizontal. An elongated plate-shaped wedge with a bottom edge that is almost horizontal and the front edge is tilted backwards downwards, and the whole is warped backwards, and the transverse section is on the outer peripheral surface of the column and the rear protruding peripheral edge on the vertical wall The rear upper part of the rear projecting peripheral edge is projected in an arc shape so as to be on the outer periphery of the arm lumber, and is fixed to the outer periphery excluding the lower part of the arm lumber, and below it is hooked on the central wall of the catch metal A step is formed, below this The rear edge is slanted in the same manner as the central wall of the receiving bracket and is a receiving bracket penetrating part with a length that penetrates the receiving bracket and protrudes downward. It is formed at the front lower end of the arm lumber and the front lower end of the arm lumber, which is blocked and passed from the upper end of the rearward protruding peripheral edge to the upper upper end of the arm lumber and hits the front and rear edges of the lower part slightly. The rust is fitted with the upper end being left above the rearward projecting peripheral edge, and the lower end thereof is in contact with the rear surface of the lower end of the rearward projecting peripheral edge and can protrude below the receiving metal fitting. It consists of a wedge guide member.

According to a second aspect of the present invention, in the binding device for a wedge-tightening type scaffold according to the first aspect, the width of the wedge is gradually increased from the bottom to the top.

The binding device in the wedge-binding scaffold according to the first aspect of the present invention includes a receiving metal member fixed to the outer periphery of a predetermined height of the support column and a locking metal member provided at an end portion of the arm wood passed between the two support columns. The receiving bracket is U-shaped when viewed from the plane, and the central wall is inclined forward and downward, and the locking bracket includes a front projecting portion and the upper edge including the upper end is substantially horizontal. An elongated plate-shaped wedge with a bottom edge that is almost horizontal and the front edge is tilted backwards downwards, and the whole is warped backwards, and the transverse section is on the outer peripheral surface of the column and the rear protruding peripheral edge on the vertical wall The rear upper part of the rear projecting peripheral edge is projected in an arc shape so as to be on the outer periphery of the arm lumber, and is fixed to the outer periphery excluding the lower part of the arm lumber, and below it is hooked on the central wall of the catch metal A step is formed, below this The rear edge is slanted in the same manner as the central wall of the receiving bracket and is a receiving bracket penetrating part with a length that penetrates the receiving bracket and protrudes downward. It is formed at the front lower end of the arm lumber and the front lower end of the arm lumber, which is blocked and passed from the upper end of the rearward protruding peripheral edge to the upper upper end of the arm lumber and hits the front and rear edges of the lower part slightly. The rust is fitted with the upper end being left above the rearward projecting peripheral edge, and the lower end thereof is in contact with the rear surface of the lower end of the rearward projecting peripheral edge and can protrude below the receiving metal fitting. Since it is made up of a wedge guide member, when the wedge is pushed down by hitting the upper end of the wedge with a hammer, the front middle part of the wedge comes into close contact with the vertical portion of the wedge guide member and the wedge below this The rear is closely beside 桟下 end of the receiving metal fitting, the wedge is kept lowered state by contact with the rear surface of the rear protruded rim of wedge lower end receiving metal. As a result, the arm lumber does not wobble due to the wedge action, so the arm lumber is kept firmly level, and even if wind pressure is applied to it from below using a sheet steel cloth cloth, There is no risk that the fastener will fall out of the catch. Therefore, although the structure is simple, there is an advantage that a cloth with a floor made of a thin steel plate can be used instead of an expanded metal.

In the binding device for the wedge-binding scaffold according to the second aspect of the invention, since the width of the wedge is gradually increased from the bottom to the top, it is easy to insert the wedge from the long slot for entering and exiting the wedge.

It is a horizontal sectional view showing the state just before binding arm wood to a support. It is the side view of FIG. 1 which notched the front end part of the arm timber containing the wedge guide member which shows the state immediately before binding an arm timber to a support | pillar. The front end of the arm lumber including the receiving bracket and the wedge guide member showing the state in which the locking bracket is put in the receiving bracket and the downward stepped portion of the wedge guide member is hooked on the central wall of the receiving bracket and the wedge is inserted into the wedge guide member It is a cutaway side view. FIG. 4 is a side view in which a front end portion of an arm lumber including a receiving metal fitting and a wedge guide member showing a state where a wedge is fully inserted into the wedge guide member from the state of FIG. 3 is cut out. FIG. 4 is a cross-sectional view taken along the line V-V in FIG.

The binding device in the wedge-binding scaffold shown in FIG. 1 to FIG. 5 is a brace (2) fixed to the outer periphery of a predetermined height of the support column (1) and the arm wood passed between the two support columns (1). It consists of a locking bracket (4) provided at the end of (3), and the receiving bracket (2) is U-shaped when viewed from the plane, with the central wall (5) inclined forward and downward. The metal fitting (4) has a front protrusion (6), and the upper edge (7) including the upper protrusion (6) is substantially horizontal, the upper edge (8) and the lower edge (22) are substantially horizontal, and the front edge (9) is the rear. A vertically elongated wedge (11) having a lower end (10) that is inclined downward and warped backwards, and a transverse section projecting backward from the outer peripheral surface of the column (1) to the vertical wall (12) A peripheral edge (13) is provided, and the upper part (14) of the rearward protruding peripheral edge (13) is projected in an arc shape on the outer periphery excluding the lower part of the arm wood (3) so that the lower part of the arm wood (3) is Except the outer periphery Further, a downward stepped portion (15) that is hooked on the central wall (5) of the receiving metal fitting (2) is formed below, and the lower portion is the same as the central wall (5) of the receiving metal fitting (2). It is formed into a receiving metal penetrating part (16) having a length that penetrates the receiving metal fitting (2) and protrudes downwardly, and a horizontal crosspiece (17) is secured to the rear end of the inner surfaces on both right and left sides. A long hole (18) and an arm wood (3) which are opened from the upper end of the rearward projecting peripheral edge (13) to the front upper end of the arm wood (3) and hit the front and rear edges of the wedge (11). ) Through the notch (19) formed at the lower end of the front part, leaving the upper end part (8) above the rearward projecting peripheral edge (13), and the rust (11) is fitted in a vertically movable manner. The lower end portion (10) is in contact with the rear surface of the lower end (20) of the rearward projecting peripheral edge (13) and can protrude below the receiving metal fitting (2). It consists of a wedge guide member (21) made.

In order to tie the arm wood (3) to the support post (1), first, as shown in FIG. 2, the front part of the arm wood (3) is projected from the upper end of the rearward protruding peripheral edge (13) of the wedge guide member (21). The wedge (11) is put into the wedge guide member (21) from the long hole (18) opened to the upper end. Then, the lower end portion (10) of the wedge (11) hits the horizontal rail (17) of the wedge guide member (21), and the lower part of the front edge (23) of the wedge (11) is the vertical wall of the wedge guide member (21). Hit (12) and the wedge (11) stops there. Next, in this state, the wedge guide member (21) is inserted into the metal fitting (2) as shown in FIG. Finally, the wedge (11) is pushed down by hitting the upper end (8) of the wedge (11) with a hammer from above. Then, as shown in FIG. 3, the front edge (23) of the wedge (11) is in close contact with the vertical wall (12) of the wedge guide member (21), and the lower end (10) of the wedge (11) is guided by the wedge. The wedge (11) is kept in the lowered state by contacting the rear surface of the lower end (20) of the rearward projecting peripheral edge (13) of the member (21). As a result, the arm wood (3) does not wobble due to the wedge action, so that the arm wood (3) is kept firmly level.

To remove the arm lumber (3) tightly attached to the support post (1), hit the lower end (10) of the wedge (11) projecting downward from the receiving bracket (2) with a hammer. Can be lifted by holding the upper end (8) of the wedge (11) having the front protrusion (6) by hand. Therefore, the latch metal (4) provided at the end of the arm lumber (3) may be pulled upward from the metal bracket (2).

(1) Prop
(2) Bracket
(3) Arm wood
(4) Locking bracket
(5) Center wall of the bracket
(6) Front protrusion of wedge
(7) Upper edge of the upper end of the wedge
(8) Upper end of the wedge
(9) Front edge of the lower end of the wedge
(10) The lower end of the wedge
(11) Wedge
(12) Vertical wall of wedge guide member
(13) Backward protruding peripheral edge of wedge guide member
(14) Upper part of rear protruding peripheral edge of wedge guide member
(15) Downward stepped portion of wedge guide member
(16) Receptacle penetration part of wedge guide member
(17) Horizontal rail
(18) Long hole
(19) Notch
(20) The lower end of the rearward protruding peripheral edge of the wedge guide member
(21) Wedge guide member
(22) Lower edge of the lower end of the wedge

Claims (2)

It consists of a bracket fixed to the outer periphery of the column with a predetermined height and a locking bracket provided at the end of the arm lumber passed between the two columns. The wall is slanted forward and the locking bracket has a front protrusion and the top edge is almost horizontal and the bottom edge is almost horizontal and the front edge is slanted back A vertical plate-shaped wedge with a lower end that is bent backwards, and a cross-section is provided on the outer peripheral surface of the column, and a rear protruding peripheral edge is provided on the vertical wall. It protrudes in an arc shape on the outer periphery and is fixed to the outer periphery excluding the lower part of the arm lumber, and a downward stepped portion is formed below it, which is hooked on the central wall of the receiving bracket. Like the central wall of the bracket, A receiving metal penetrating portion with a length that penetrates the receiving metal and protrudes downward is provided, and a horizontal rail is secured to the rear end of the inner surface on both the left and right sides. Through the long hole where the front and rear edges of the lower part hit from the upper end of the wedge opened to the upper end of the part and the notch formed at the front lower end of the arm lumber, the upper end is above the rear protruding peripheral edge And a wedge guide member formed such that the wedge is fitted to the rear end and the lower end thereof is in contact with the rear surface of the lower end of the rearward projecting peripheral edge and can protrude downward from the receiving bracket. The binding device for a wedge-binding scaffold according to claim 1, wherein the width of the wedge is gradually increased from bottom to top.

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