JP5640173B1 - 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 U-shaped receiving bracket in a plan view of a support column and a locking bracket at an end portion of a tubular arm lumber. The locking bracket is perpendicular to the wedge in which the wedge positioning member is held at the lower end of the wedge front pushing leaf spring on the lower side of the vertically elongated wedge-shaped wedge body that has a front horizontal protrusion at the upper end and warps backward. The wall is provided with a rear-projecting peripheral edge, the upper part is fixed to the outer periphery of the arm lumber, and a downward stepped portion is formed below it that is hooked on the central wall of the receiving metal, and the lower part is the receiving metal penetrating part The wedge is inserted through the notches formed in the upper and lower ends of the front part of the tubular arm timber, leaving the front horizontal projection at the upper end, and the positioning member is in contact with the central wall of the receiving bracket, and the wedge body Is formed of a wedge guide member that is in contact with the vertical wall and has a lower end protruding below the metal fitting. [Selection] Figure 4

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 a support column and a lock provided at an end portion of a tubular arm wood passed between the two support columns. The bracket is a U-shape with the center wall inclined forward and downward, and the locking bracket is a vertically long plate with a front horizontal projection at the upper end that warps backwards. The center wall of the wedge positioning member is a wedge-shaped pusher leaf spring. A wedge that is fastened to the wedge body with a set screw at the lower end, and a transverse section is provided on the outer peripheral surface of the support column, and a rearward protruding peripheral edge is provided on the vertical wall, and the upper part of the rearward protruding peripheral edge is on the outer periphery of the arm lumber. Arms bent in an arc like that A lower step is formed that is fixed to the outer periphery of the front end excluding the lower part of the bracket, and is hooked on the center wall of the receiving bracket at the bottom, and the rear edge of the lower part penetrates the receiving bracket and projects below it. The rust is inserted into the metal fitting through-hole, and through the notches formed at the front upper and lower ends of the tubular arm lumber, leaving the front horizontal protrusion at the upper end above the rear protruding peripheral edge. The wedge positioning member provided on the wedge comes into contact with the central wall of the metal fitting, and the wedge main body which is warped backward is in contact with the vertical wall so that the lower end thereof can protrude below the metal fitting. It will be.

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 a support column and a lock provided at an end portion of a tubular arm wood passed between the two support columns. The bracket is a U-shape with the center wall inclined forward and downward, and the locking bracket is a vertically long plate with a front horizontal projection at the upper end that warps backwards. The center wall of the wedge positioning member is a wedge-shaped pusher leaf spring. A wedge that is fixed to the wedge body with a set screw on the lower end and a transverse section is provided on the outer peripheral surface of the column, and a rearward protruding peripheral edge is provided on the vertical wall. The upper part of the rearward protruding peripheral edge is the outer periphery of the tubular arm lumber. Bent in an arc like so A downward stepped portion is formed that is fixed to the outer periphery of the front end excluding the lower part of the timber and is hooked to the central wall of the receiving bracket at the lower part thereof, and the lower portion of this has a length that penetrates the receiving bracket and protrudes downward. receiving made a fitting through-section, through a cutout was allowed formed on the front upper and lower ends of the tubular arms wood wedges are fitted to leave a forward horizontal projection of the top end above the rear protruded rim, wedge The positioning member provided in the contact portion is in contact with the central wall of the receiving metal fitting, and the wedge body which is warped backward is in contact with the vertical wall and the lower end thereof protrudes below the receiving metal fitting member. Therefore, when the wedge is pushed down by hitting the top horizontal front projection of the wedge with a hammer, the positioning member provided on the wedge is pressed against the center wall of the receiving bracket and Front portion of the wedge body warped come is pressed against the vertical walls of the wedge guide member wedge stops in that position, the wedge is maintained in lowered state. 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.

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 the side view which notched. 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 FIGS. 1 to 5 includes a receiving arm (2) fixed to the outer periphery of a predetermined height of the support column (1) and a tubular arm passed between the two support columns (1). It consists of a locking metal fitting (4) provided at the end of the wood (3), and the receiving metal fitting (2) is U-shaped when viewed from the plane, with the central wall (5) inclined forward and downward. The fastener (4) has a front horizontal protrusion (6) at the upper end and the entire length of the vertically long wedge-shaped wedge body (7) warped backwards. A wedge positioning member (9) whose rear surface of the wall (8) is inclined in the same manner as the central wall (5) of the receiving metal fitting (2) has a leaf spring (11) for pushing the central wall (10) forward. The wedge (13), which is fixed to the wedge body (7) with a set screw (12) across the lower end of the rod, and the transverse section projects backward from the vertical wall (14) to the outer peripheral surface of the column (1) An edge (15) is provided, and the upper part of the rearward projecting peripheral edge (15) is bent in an arc shape so as to be on the outer periphery of the tubular arm wood (3), and is fixed to the outer periphery excluding the lower part of the tubular arm wood (3). A downward stepped portion (16) that is hooked on the central wall (5) of the receiving metal fitting (2) is formed below, and the rear edge of the lower part is the same as the central wall (5) of the receiving metal fitting (2). And a cut-through formed at the upper and lower ends of the front arm of the tubular arm lumber (3). The wedge (13) is inserted into the wedge (13) by passing the notches (18) and (19) and leaving the front horizontal projection (6) at the upper end above the rearward projecting peripheral edge (15). The positioning member (9) is in contact with the central wall (5) of the receiving metal fitting (2), and the wedge body (7) warped rearward is connected to the vertical wall (1). ) To be more becomes becomes as the wedge guide member so as to be able to project downward of the lower end receiving metal (2) (20) in contact.

  In order to tie the arm wood (3) to the column (1), first, as shown in FIG. 2, it is formed on the front upper end of the tubular arm wood (3) and the front lower end of the tubular arm wood (3). When the wedge (13) is fitted through the notches (18) and (19) and is inserted to a position slightly above the lower end of the rearward projecting peripheral edge (15) of the wedge guide member (20), the wedge forward pushing leaf spring (11 The lower part of the wedge body (7) hits the rear edge and the lower part of the wedge main body (7) warped backwards on the vertical wall (14) of the wedge guide member (20). Stop in contact. Therefore, as shown in FIG. 3, when the locking metal fitting (4) in this state is inserted into the receiving metal fitting (2), the downward projecting peripheral edge (15) of the wedge guide member (20) has a downward step (16). It catches on the central wall (5) of the catch (2) and stops. Next, as shown in FIG. 4, when the upper end protruding portion (6) of the wedge body (7) is pushed down by hand or hit with a hammer, the wedge (13) penetrates the receiving metal fitting (2) and protrudes downward. The wedge positioning member (9) is pressed against the central wall (5) of the receiving metal fitting (2), and the wedge body (7) is pressed against the vertical wall (14) of the wedge guide member (20) by the leaf spring (18). So keep that position. In this way, the wedge (13) is kept in the lowered state, and at the same time, the vertical wall (14) of the wedge guide member (20) is kept along the outer peripheral surface of the column (1). 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 column (1), hit the lower end of the wedge (13) projecting downward from the bracket (2) with a hammer and the wedge (13) will move upward. Therefore, it is only necessary to pull upward from the receiving metal fitting (2) to the locking metal fitting (4) provided at the end of the arm lumber (3).

(1) Prop
(2) Bracket
(3) Arm wood
(4) Locking bracket
(5) Center wall of the bracket
(6) Front protrusion of wedge
(7) Wedge body
(8) Both side walls of wedge positioning member
(9) Wedge positioning member
(10) Central wall of wedge positioning member
(11) Wedge spring for pushing forward
(12) Set screw
(13) Wedge
(14) Vertical wall of wedge guide member
(15) Backward protruding peripheral edge of wedge guide member
(16) Downward step of the rearward protruding peripheral edge of the wedge guide member
(17) Wedge penetration part of wedge guide member
(18) Notch formed at the upper front end of tubular arm lumber
(19) Notch formed at the front lower end of the tubular arm wood
(20) Wedge guide member

Claims (1)

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 tubular arm lumber passed between the two columns. The central wall is inclined forward and the locking bracket has a front horizontal protrusion at the upper end, and the entire length of the wedge-shaped wedge-shaped body that is bent backwards is slightly rearward in plan view. A wedge that has a U-shaped rear surface that is inclined like the central wall of the bracket. The wedge-positioning member has a central wall that is clamped to the wedge body with a set screw across the lower end of the wedge-pushing leaf spring. And the outer peripheral surface excluding the lower part of the arm lumber is provided with a rear projecting peripheral edge on the vertical wall on the outer peripheral surface of the support column, and the upper part of the rear projecting peripheral edge is bent in an arc so as to be on the outer periphery of the arm lumber. Attached to the receiving bracket below A downward step that is hooked on the central wall is formed, the rear edge of the lower part is inclined like the central wall of the receiving bracket, and the length of the receiving bracket penetrates the receiving bracket and projects downward The wedge was fitted into the wedge arm by passing through the notches formed in the upper and lower ends of the front part of the tubular arm wood, leaving the front horizontal protrusion at the upper end above the rear protruding peripheral edge. A wedge-tightened scaffold comprising a wedge guide member in which a positioning member is in contact with the central wall of the receiving bracket and a wedge body that is warped backward is in contact with the vertical wall and a lower end thereof can protrude below the receiving bracket. Tightening device in.

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