JP5373674B2 - Device for adjusting the coupling angle in construction scaffolds - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily cope with both of a gentle curvature change and a steep curvature change in a scaffold for construction when a construction surface is curved. <P>SOLUTION: In a scaffold for construction, an adjusting device of connecting angles includes, as a means to connect laterally adjacent building frames 11 at needed angles from a lateral axis or in conformity to the lateral axis; second and third lateral members 18, 19 which are arranged on both of right and left sides of a first lateral member 14 in a manner that they can be opened and closed by needed angles to lay a scaffold board 55 on the laterally adjacent building frames; opening/closing shaft sections 20, 21 pivotally supporting the second and third lateral members in an openable/closable manner at either one of the front or back of the building frames to deviate the adjacent building frames from a lateral axis by the needed angles or to bring them into conformity with the lateral axis; and angle adjusting mechanisms 30, 31 arranged in a manner that the opening/closing angles of the second and third lateral members with respect to the first lateral member can be adjusted at the other one of the front or back of the building frames to adjust the adjacent building frames to the needed angles. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  [Technical Field] The present invention relates to an adjusting device that allows a construction frame to be connected to a left and right and to change the connection angle of the construction frame according to the curvature of the construction surface.

  For example, a scaffold is installed at a construction site so as to surround the construction surface. The scaffold has a structure in which a pair of left and right scaffold building frames are integrally combined using a coupling member, and a necessary number of them are connected to the left and right, and a scaffold plate is passed between adjacent building frames. Here, since the scaffolding is installed on the construction surface by connecting a long and narrow scaffolding plate, if the construction surface consists of a flat surface, it is only necessary to assemble the scaffold in a straight line, so no problem will occur, but the construction surface is, for example, When it has a curved surface such as a circular wall surface, the scaffolding plate is arranged so that the longitudinal axis of the scaffolding plate draws a polygonal line along the curved surface. However, the conventional scaffold is based on the combination of a straight line and a right angle, and when changing to an angle other than a straight line and a right angle, it is necessary to assemble a special scaffold, but a special scaffold is prepared in advance. Cannot handle with fixed-size materials. For this reason, there is a need for on-site processing, and various problems arise, such as having to spend extra effort and time on the work.

  On the other hand, some technical proposals have been made in the patent literature. For example, Japanese Utility Model Application Laid-Open No. 5-83190 deals with a scaffold device that changes to an angle other than a straight line. However, the purpose of the device is to close a gap formed between adjacent scaffolds, and no proposal is made for joining the scaffold plates, which are one unit. Moreover, Japanese Utility Model Publication No. 58-44340 deals with an arc-shaped frame scaffold, and a member called a long slender piece is attached to a vertical saddle using a clamp, and two pieces are used to support an adjacent receiving frame on the long slender piece. Are provided so that one of them rotates relative to the other. However, here too, nothing is fixed on the opposite side where the two instruction units are not provided. For this reason, in the conventional system, there is no fixed one when there is an angle difference between adjacent scaffolds, so there is anxiety in safety because at least one of them is always movable.

  In contrast, the inventor of the present invention first has a building frame composed of front and rear columns and horizontal members that connect them, and connects the building frames using a connecting member and connects them in the left-right direction. By installing the adjacent building frame while shifting it by a slight angle from the left-right axis, it is possible to cope with construction on a construction surface that is a convex curved surface when viewed in plan. A connection angle adjustment device was developed. The apparatus prepares a second horizontal member for the original horizontal member that joins the columns before and after the building frame in order to shift the adjacent building frame from the horizontal axis by a slight angle, This is configured such that the shaft is fixed at the base and the distance can be adjusted at the tip. However, it was pointed out that the angle adjustment range that can be handled is limited, and it is not suitable for construction surfaces with a small radius of curvature.

Japanese Utility Model Publication No. 5-83190 No. 58-44340

  The present invention has been made paying attention to the above points, and the problem is that in a construction scaffold that is installed by connecting the building frames to the left and right, when the construction surface is a curved surface, the change in curvature is gradual. It is to be able to easily cope with things and things that change rapidly. Another object of the present invention is to provide a connection angle adjusting device that can change the connection angle of a building frame and can be installed while maintaining a straight line when the construction surface is flat. It is to be. Another object of the present invention is to make it possible to change the connection angle of the building frame by adjusting the connection angle without assembling a special scaffold, as in the case of not changing the connection angle.

In order to solve the problems in the previous period, the present invention forms a building frame by front and rear columns and a first horizontal member that couples them, and a plurality of the building frames are connected in the left-right direction using a coupling member. As a means to connect the building frames adjacent to the left and right sides with the necessary angle from the left and right axis lines or to match with the left and right axis lines in the construction scaffolds installed by The second and third horizontal members arranged so as to be openable and closable at both right and left sides of the first horizontal member and the adjacent building frame are shifted by the required angle from the horizontal axis. In order to match the horizontal axis, the opening / closing shaft part that pivotally supports the second and third horizontal members so that they can be opened and closed on one of the front and rear sides of the building frame and the adjacent building frame are adjusted to the required angle. To the first horizontal member on the other side before and after the building frame 2, includes a third adjustable provided an angle adjusting mechanism of the opening angle of the horizontal members, the opening and closing shaft section and the angle adjusting mechanism is detachably attached to the cylindrical body of the front and rear with a rear clamp or front clamps The measures to be provided are taken.

  The scaffold for construction in the present invention is intended for scaffolds for performing construction work, construction work, and other various works. The scaffold has a building frame made up of front and rear pillars and a first horizontal member that connects them, and is integrally assembled by connecting the building frame in the left-right direction using a connecting member. Note that the front and rear refer to the front and the rear toward the scaffold, and the left and right are determined based on the front and rear directions (see FIGS. 1 and 2).

  The apparatus of the present invention comprises means for connecting adjacent building frames at a necessary angle from the longitudinal axis of the scaffolding plate or in alignment with the left-right axis. The means for connecting is means for connecting adjacent building frames, and the connection is performed on both front and rear portions of the building frame as described below. One of the means for connecting the adjacent building frames is an opening / closing shaft part that can be opened and closed to separate the adjacent building frame from the longitudinal axis on one of the front and rear sides of the building frame. The shaft side of the opening and closing shaft part is provided on one building frame, the bearing that receives the shaft is provided on the other building frame, and the coupling angle can be changed by fitting the shaft to the bearing, and the adjacent building frame is on one side of the front and back Link.

  Another of the means for connecting the building frames is an angle adjusting mechanism for fixing the adjacent building frames to an angle opened by the opening and closing on the other of the front and rear of the building frames. The angle adjustment mechanism keeps the opening and closing angles of adjacent building frames constant, and even when there is an angle difference between adjacent scaffolds, or when there is no angle difference between the left and right axis lines, both in the front and rear direction It is fixed and contributes to safety improvement. The opening / closing shaft portion and the angle adjusting mechanism portion are provided at both ends of the second and third horizontal members, respectively. And it can finally be used as a scaffold by hooking a scaffolding plate to the building frame connected to the left and right (longitudinal direction), in particular, the second horizontal member and the third horizontal member.

  The angle adjustment mechanism includes a plurality of adjustment unit groups provided along the angle adjustment direction on one adjacent building frame side, and a fixture for fixing to the adjustment unit group provided on the other adjacent scaffold side. It is constituted by. The plurality of adjustment unit groups are preferably composed of a row of hole portions, or composed of a row of concave and convex portions typified by serrated irregularities such as a rack. By comprising a plurality of adjustment unit groups, the angle is adjusted at the position of each adjustment unit, so there is no risk of shifting unlike a long groove-like adjustment unit.

  According to the above configuration, the adjacent building frame can be firmly fixed at both the front and rear positions, and all the building frames are fixed to each other. Therefore, according to the apparatus of the present invention, the strength as a structure is obtained. It can be used without any problems. In the present invention, the angle between the adjacent scaffolds that can be adjusted is not large, and is assumed to be less than 10 degrees at most, and further angle adjustment is not preferable because of strength requirements.

  In the apparatus according to the present invention, it is possible to connect the building frames adjacent to the left and right sides so as to coincide with the left and right direction axis without providing a necessary angle from the left and right direction axis, and therefore, it corresponds to a construction surface composed of a plane. be able to. In addition, since it is naturally possible to correspond to the concave curved surface by reversing the front and back of the building frame, according to the present invention, a construction surface composed of a convex curved surface or a concave curved surface, a construction surface mixed with a convex curved surface and a concave curved surface, Furthermore, it is possible to cope with construction on a construction surface in which a convex curved surface, a concave curved surface and a plane are mixed. In the apparatus according to the present invention, it is possible to freely add other configurations such as disposing a fall-preventing plate at the connecting portion in the left-right direction.

  Since the present invention is configured and operates as described above, in a construction scaffold that is installed by connecting the building frames to the left and right, the curvature of the construction is moderately changed, and also changes rapidly. It is possible to easily cope with this, and it becomes even easier to change the connecting angle of the building frame in accordance with the change of the construction surface. In addition, according to the apparatus of the present invention, it is not necessary to assemble a special scaffold when changing the connection direction of the building frames, and it is only necessary to adjust the angle at which the adjacent building frames are connected to each other. Is possible. Further, according to the apparatus of the present invention, the opening / closing shaft portion is provided on one of the front and rear sides of the building frame, and the angle adjusting mechanism is provided on the other side, so that the position of the opening / closing shaft portion and the position of the angle adjusting mechanism are interchanged. Accordingly, it is possible to easily cope with a convex construction surface, a concave construction surface, and a construction surface composed of a flat surface.

  Hereinafter, the present invention will be described in more detail with reference to illustrated embodiments. FIG. 1 shows an example of a connecting angle adjusting device in a construction scaffold according to the present invention, and the example of FIG. 1 shows a scaffold 10 installed so as to surround a construction surface W at a construction site of a building. ing.

  The illustrated construction scaffold 10 is a scaffold for performing construction work on a construction surface W having a convex surface having a convex curved surface, and the scaffold is formed by connecting building frames 11. It consists of front and rear column bodies 12 and 13 and a first horizontal member 14 that connects them. The building frame 11 is coupled in the left-right direction using the coupling member 15 and is assembled integrally. 1 to 3, the side where the operator is facing the scaffold is the front F, the side with the construction surface is the rear B, and the left and right L and R are based on the front and rear directions. In the case of illustration, since the construction of the wall surface including the convex construction surface is targeted, the side on which the opening / closing shaft portion is arranged is the front F, and the side on which the angle adjusting mechanism is arranged is the rear B (see FIG. 2).

  The front and rear column bodies 12 and 13 are made of so-called iron pipes, usually have a certain length, and upper and lower end portions are provided with a connection structure for addition. Moreover, the 1st horizontal member 14 is couple | bonded with the front-and-rear pillars 12 and 13 by welding at the front-and-rear both ends, and the one independent building frame 11 is formed by this. A coupling member 15 is used to form a scaffold by coupling and integrating the building frames 11 arranged in the left-right direction. The coupling member 15 has a length adjusting member 15 'at the end. The coupling member 15 is provided with a long hole 15a in the longitudinal direction, and a bolt 15b and a tightening nut 15c are passed through the length adjusting member 15'. It is comprised so that it can respond to the change of an adjacent scaffold space | interval, etc. In addition, the coupling member 15 is usually composed of a member that is elongated so as to be crossed in an X shape and attached like a brace. A shaft hole 15d is formed as a coupling means at the end of the length adjusting member 15 '. Then, it is inserted into the mounting protrusions 16 and 17 provided on the front and rear column bodies 12 and 13 through the shaft hole 15 d and attached to the coupling member 15. The attachment protrusions 16 and 17 have an attached hook, thereby preventing the attachment protrusions 16 and 17 from being detached, thereby completing the connection between the building frames 11. In addition, the front and rear column bodies 12 and 13 made of iron pipes have a height-adjustable base plate called a jack base or the like (not shown) at the lowermost end.

  The apparatus of the present invention includes means for connecting the building frames 11, 11 adjacent to the left and right at a necessary angle B along the longitudinal axes A, A of the scaffolding plate 55 (see FIG. 3). The connecting means can open and close the necessary angles on the left and right sides of the first horizontal member 14 of each building frame 11 in order to shift the longitudinal axes A and A of the adjacent scaffolding plates 55 by a necessary angle B. A second horizontal member 18 and a third horizontal member 19 disposed on the opening / closing shafts 20 and 21 for attaching the second horizontal member 18 and the third horizontal member 19 so as to be opened and closed by rotation; Angle adjusting mechanisms 30 and 31 for fixing the second horizontal member 18 and the third horizontal member 19 to the angle B determined by the opening / closing adjustment are provided. The opening / closing shafts 20 and 21 and the angle adjusting mechanisms 30 and 31 are provided at both front and rear ends of the second horizontal member 18 and the third horizontal member 19, respectively. Reference numerals 20 and 21 are located at the rear, and the angle adjusting mechanisms 30 and 31 are located at the front.

  The open / close shaft portions 20 and 21 are provided on a pair of left and right rear mounting portions 24 and 25 attached to the rear column 13 via the rear clamp 22, the intermediate member 22 a and the rear hook 23. 25 has rear longitudinal axes 26, 27. In the illustrated example, the rear clamp 22 is means for attaching the open / close shafts 20 and 21 to the rear column 13, the intermediate member 22a is welded to the left side surface thereof, the left rear attachment portion 24 and the rear portion on the intermediate member 22a. The hook 23 and the right rear attachment portion 25 are welded in order. The rear hook 23 has a reverse U-shaped front shape and a reverse gate shape with the left and right rear mounting portions 24, 25. The rear hook 23 is hooked on the horizontal member 14. Bolt holes 18a and 19a are opened at the rear end portions of the second horizontal member 18 and the third horizontal member 19, and the portions are passed through the rear longitudinal axes 26 and 27 and are prevented from coming off by nuts 28 and 29. Made.

  The angle adjusting mechanisms 30 and 31 are provided on a pair of left and right front attachment portions 34 and 35 attached to the front column 12 via a front clamp 32 and a front hook 33. In the illustrated example, the front clamp 32 is a means for attaching the angle adjusting mechanisms 30 and 31 to the front column 12, the intermediate member 32 a is welded to the left side surface thereof, and the left front attachment portion 34 is provided above the intermediate member 32 a. The hook 33 and the right front mounting portion 55 are welded in this order. The front hook 33 has a reverse U-shaped front shape, and has a planar shape with the left and right front mounting portions 34 and 35, and is hooked on the horizontal member 14. The angle adjusting mechanisms 30 and 31 also use the clamps 22 and 32 as attachment means to the column bodies 12 and 13 in the same manner as the opening and closing shaft portions 20 and 21, and can be attached and detached by tightening and loosening the clamp screws.

  Adjustment arms 36 and 37 extending in the left-right direction are welded to the front mounting portions 34 and 35, and the left and right adjustment arms 36 and 37 have a plurality of adjustment unit groups provided along the angle adjustment direction. doing. The adjusting arms 36 and 37 in the illustrated example are of a rectangular tube type, and a row of holes 38 and 39 is provided as an adjusting portion group on the lower surface along the adjusting arms 36 and 37. Reference numerals 36a and 37a denote stopper plates, which are provided at the ends of the adjustment arms 36 and 37 so that the receiving members 40 and 41 do not come out. Further, as the elements constituting the angle adjusting mechanisms 30 and 31, square frame type receiving members 40 and 41 slidable along the adjusting arms 36 and 37 are provided as the second horizontal member 18 and the third horizontal member 19. Are provided at the front end of each. The hole portions 38 and 39, which are a plurality of adjusting portion groups shown in FIGS. 1 to 6, are non-penetrating holes, and the receiving members 40 and 41 are provided with female screw portions 42 and 43, The bolts 44 and 45 are screwed into the holes 38 and 39 as fixtures. The holes 38 and 39 are made of holes that do not pass through in order to receive the tips of the bolts 44 and 45 that are screw-in type fixing tools, and can be fixed at a predetermined angle within the range of the assumed angle B. 1 to 10 degrees.

The angle adjusting mechanisms 30 and 31 are configured to include the adjusting arms 36 and 37 and the receiving members 40 and 41 as described above, and the adjusting arms 36 and 37 among them bear a load applied to the scaffold plate 55. Therefore, if the length is too long, the load on the strength is increased. Therefore, the adjustment arm is set so that the crossing angle of the longitudinal axes A and A between adjacent scaffolds is less than 10 degrees and preferably 5 to 6 degrees. It is desirable to set the length of 23b. Therefore, since there is a limit in adjusting the connecting angle, it is absolutely necessary to provide the angle adjusting mechanisms 30 and 31 on the left and right as the adjustment angle increases. A rear clamp 22 is attached to the rear attachment portions 24 and 25 provided with the opening and closing shaft portions 20 and 21, and a front clamp 32 is attached to the front attachment portions 34 and 35. A well-known clamp having a structure that is coupled to the shaft and tightened to the column bodies 12 and 13 by tightening or loosening bolts and nuts attached to the open / close ends can be used.
Further, in the examples up to FIG. 6 as the angle adjusting mechanism, a fixing structure constituted by a non-through hole and engaging with a bolt is illustrated, but not limited to this, any known stepwise or continuous angle adjustment is shown. Mechanisms can be applied. For example, FIG. 7 and FIG. 8 are examples in which angle adjusting mechanisms 50 and 51 composed of a row of concave portions 46 and convex portions 47, represented by sawtooth-like irregularities such as racks, are provided on the left and right adjustment arms 36 and 37. Indicates. In this example, the projecting portion 48 that meshes with the row of the concave portion 46 and the convex portion 47 is provided on the upper surface inside the receiving member 49, and by tightening the bolt 53 that is a fixing screw screwed into the female screw portion 52 of the receiving member 49, It is provided so that it can be fixed at a predetermined angle within the range of the angle B set to the angle. However, in this example in which serrated irregularities are applied, it is also possible to dispose the bolt 53 as a fixture above and screw the tip of the bolt 53 into the recess 46 to be fixed.

  In the construction scaffold 10 of the present invention configured as described above, any of the adjustment unit groups including the row of hole portions 38 and 39 or the row of concave and convex portions 46 and 47 can be adopted. Since the angle is adjusted at the position of the adjusting portion, unlike the long groove-like adjusting portion, there is no fear of shifting. In each figure, what is shown by the code | symbol 55 has shown the scaffold board, and the 2nd horizontal member 18 of the adjacent building frames 11 and 11 and the 3rd horizontal member 19 are shown by the hook 54 provided in both ends. You can hang on either.

  In the connection angle adjusting device for a construction scaffold according to the present invention, the scaffolding plate 55 that is hung on the adjacent building frames 11 and 11 in order to install the construction scaffold 10 so as to surround the target construction surface W. The angle adjusting mechanisms 30 to 51 are adjusted in accordance with a necessary angle B where the longitudinal axes A and A intersect, and the adjacent building frames 11 and 11 are connected with a predetermined angle shifted, and the building frames arranged at the angle. 11 can be reliably connected in the left-right direction using the coupling member 15, and the second horizontal member 18 and the third horizontal member 19 provided in each of the building frames 11 are attached to the second horizontal member 18 by the hook 54. The scaffold board 55 can be attached and the scaffold board 55 can be arrange | positioned in the form which matched the curvature of the construction surface W correctly.

  In the apparatus of the present invention, the opening and closing shaft portions 20 and 21 are provided on both the left and right sides of the building frame 11 and the angle adjusting mechanisms 30 to 51 are provided. Therefore, in addition to the convex curved form described above, the opening and closing shaft portions are provided. By switching the positions of 20, 21 and the positions of the angle adjusting mechanisms 30 to 51 back and forth, it is possible to adapt to a concave curved form or a convex curved form, and a convex construction surface and a concave construction surface are provided. It is possible to easily cope with changing forms. In particular, in the case of the apparatus of the present invention, the second horizontal member 18 and the third horizontal member 19 are provided on the left and right of the building frame 11, and the second horizontal member 18 and the third horizontal member are provided. Since the angle adjustment by 19 can be arranged evenly on the left and right or evenly, the wall surface on which the curvature of the construction surface W changes can be easily accommodated, and there is no change in the curved surface. It is also possible to adapt to a construction surface W composed of a plane.

  In addition, the apparatus of this invention respond | corresponds also to the construction surface which consists of a plane by attaching the 2nd horizontal material 18 and the 3rd horizontal material 19 in parallel with respect to the 1st horizontal material 14. Is possible. Further, rear mounting portions 24 and 25 for providing an opening / closing shaft portion using the rear clamp 22 are attached to the rear column body 13, and a front mounting 34 for providing an angle adjusting mechanism to the front column body 12 using the front clamp 32. , 35 are attached, and these clamps 22 and 32 can be known clamps that are fastened to the pillars 12 and 13 by tightening and tightening bolts and nuts, so that the clamps 22 and 32 can be removed. If the opening / closing shaft part and the angle adjusting mechanism are removed and the hook 54 of the scaffold plate 55 is directly hung on the first horizontal member 14, it can be used for a simple linear scaffold. In other words, the device of the present invention can be configured by attaching the opening / closing shaft portion and the angle adjusting mechanism to the commonly used linear scaffold scaffold device using the clamps 22 and 32. .

It is plane explanatory drawing which shows what applied the adjustment apparatus of the connection angle in the scaffold for construction which concerns on this invention. It is a perspective view which decomposes | disassembles and shows Example 1 of an apparatus same as the above. It is a top view which expands and shows the arrangement | positioning angle of the adjacent building frame in the same as the above. It is a top view which expands and shows the principal part of an apparatus same as the above. It is a plane explanatory view showing adjustment of an angle similarly. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is a plane explanatory view which similarly shows adjustment of the angle in Example 2 of the apparatus of the present invention. It is the VIII-VIII sectional view taken on the line of FIG.

DESCRIPTION OF SYMBOLS 10 Construction scaffolding 11 Building frame 12, 13 Columns before and after 14 First horizontal member 15 Coupling member 16, 17 Attachment protrusion 18 Second horizontal member
19 Third horizontal member 20, 21 Opening / closing shaft part Rear attachment part 22, 32 Clamp 23, 33 Hook 24 Rear attachment part (left)
25 Rear mounting part (right)
26 Rear vertical axis (left)
27 Rear vertical axis (right)
28, 29 Nut 30, 31, 50, 51 Angle adjustment mechanism 34 Front mounting part (left)
35 Front mounting part (right)
36, 37 Adjustment arm 38, 39 Hole portion 40, 41 Receiving member 42, 43, 52 Female thread portion 44, 45, 53 Bolt 46 Recessed portion 47 Protruding portion 48 Protruding portion 49 Receiving member 49 Hook 55 Scaffold plate

Claims (3)

In the construction scaffolding that is installed by connecting the front and rear columns and the first horizontal member connecting them to each other and connecting the plurality of building frames in the left-right direction using the connecting members,
As a means to connect the building frame adjacent to the left and right by providing a necessary angle from the left and right axis, or to match the left and right axis,
Second and third horizontal members arranged so as to be able to open and close at a necessary angle on both left and right sides of the first horizontal member in order to hang the scaffolding plate on the right and left adjacent building frames;
An opening / closing shaft that pivotally supports the second and third horizontal members so that they can be opened and closed at one of the front and rear sides of the building frame in order to shift the adjacent building frame from the left-right direction axis by a necessary angle or to coincide with the left-right direction axis. And
In order to adjust the adjacent building frame to the required angle, an angle adjusting mechanism provided so that the opening and closing angles of the second and third horizontal members relative to the first horizontal member can be adjusted on the other side before and after the building frame. equipped with a,
The apparatus for adjusting a connection angle in a construction scaffold , wherein the opening / closing shaft portion and the angle adjusting mechanism are detachably provided on the front and rear columns using a rear clamp or a front clamp . As an angle adjustment mechanism, a plurality of adjustment unit groups along the angle adjustment direction are provided on both the left and right sides of the building frame, and a fixture for fixing the second and third horizontal members is provided on the adjustment unit group. The apparatus for adjusting a connection angle in a construction scaffold according to claim 1. The connecting angle adjusting device for a construction scaffold according to claim 2 , wherein the plurality of adjusting portion groups include a row of hole portions or a row of uneven portions.

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