JPH1122187A - Coupling structure of scaffolding constitution member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling structure simply mounted and demounted without using a tool by a method wherein a fit in member fitted in the outer periphery of a second constitution member is arranged at a first constitution member, and a fit-in port is formed in the outer peripheral wall of the fit-in member. SOLUTION: A bracket 4 comprises first and second outer cylinders 41 and 42, and an inner cylinder 43. One end of the inner cylinder 43 is fixed on the outer cylinder 42, and slidable insertion in the other end part is effected, and a lock mechanism is arranged between the outer and inner cylinders 42 and 43. A fit-n in member 6 is fixed at the end parts of the outer cylinders 41 and 42. A fit-in port 7 is formed in the outer peripheral wall of the fit-in member 6. The bracket 4 is regulated according to a distance between stays 1a and 1b. Thereafter, the intermediate portion in the direction of length of the fit-in port 7 is brought into contact with the outer peripheral surface of the stay 1a, and the fit-in member 6 is arranged in a cross form state at each stay. By rotating the fit-in member 6, close fit-in is effected through the fit-ion port 7, and the stay 1a is braced by bracing wall parts 61 and 62. Consequent there upon, engaging parts 63 and 64 are engaged with each other. This constitution simplifies a coupling work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold temporarily constructed at a construction site of a building, etc. The present invention relates to a structure for connecting pipes, handrails, and the like.

[0002]

2. Description of the Related Art Generally, as is known, a scaffold temporarily installed at a construction site of a building is, as is known, crossed between a plurality of pillars standing on the ground, a brace or a horizontal pipe, a handrail and a brace temporarily provided between these pillars. It is composed of a tread plate and a scaffolding component such as a large brace crossed obliquely between struts.

[0003] By the way, as a structure for connecting the above-mentioned scaffolding components to each other, for example, a structure for connecting the arm, the horizontal pipe, or the handrail to the support, conventionally, a tightening tool such as a torque wrench is used to connect the support and the arm to the support. It is used to connect with a fastener such as a clamp, or a wedge-shaped connecting piece is provided at the longitudinal end of the arm, while the supporting column has a connecting bracket having a fitting hole in which the connecting piece can be fitted. After being fixed, the connecting piece is inserted into the fitting hole of the connecting bracket, and then the connecting piece is pressed into the fitting hole by hitting with a hammer or the like, so that the arm or the like is installed between the columns. ing.

[0004]

However, in the connection structure for tightening the fastener with the above-described fastening tool, not only a fastener such as a clamp or a dedicated fastening tool such as a torque wrench, but also an assembling work is required. There is also a problem that the number of steps increases, while in a structure provided with a wedge-shaped connecting piece,
In order to fit the connecting piece provided at the end of the arm into the fitting hole of the connecting bracket, it is necessary to hammer the connecting piece each time with a hammer or the like, and even when removing the arm from the support, The connecting piece must be hammered out with a hammer or the like, and the hammering sound of the hammer not only disturbs the surrounding people, but also poses problems in its workability and work safety.

The present invention has been developed in view of the above circumstances. It is an object of the present invention to easily provide a scaffolding component such as a brace without using a tool such as a hammer for a scaffolding component such as a pillar. An object of the present invention is to provide a connecting structure of a scaffolding component that can be attached to and detached from a scaffold.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a first constituent member constituting a scaffold is fitted to an outer periphery of a second constituent member also constituting a scaffold. A possible fitting member is provided, and on the outer peripheral wall of the fitting member, the fitting member is displaced coaxially with the second component from a state where the fitting member crosses the second component. Thus, an insertion port is provided which enables the second component member to be fitted into the fitting member from the outside in the radial direction of the fitting member.

Further, in the invention according to claim 2, the axial length of the first component member can be adjusted. According to the third aspect of the present invention, the fitting member is rotatably supported on the first component member. According to a fourth aspect of the present invention, a protrusion is provided on the outer peripheral surface of the second component member on the second component member, while the fitting member engages with the projection to engage the second component member with the second component member. An engaging portion for preventing rotation and axial movement of the joining member is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a steel pipe scaffold as an example of a scaffold to which the present invention is applied. As is known, this steel pipe scaffold is a pair of columns 1a and 1
b, a plurality of sets of b are set up at predetermined intervals on the ground, and a handrail 2 is stretched between the upper ends of the supports 1a. Also, a brace is provided between the supports 1a and 1b of each set. 4, a step board 3 is erected between the arms 4, and a cross brace 5 is erected diagonally between each pair of columns 1 adjacent to each other, and between the columns 1 located on both sides of the scaffold. As shown by a two-dot chain line in FIG. 1, the main brace 50 can be erected diagonally.

[0009] The above-mentioned strut 1, brace 4, handrail 2, cross brace 5, and large brace 50 are basically formed of cylindrical steel pipes. Thus, the present invention relates to a connection structure between the first component and the second component constituting the above-described scaffold. In the embodiment shown in FIGS. 3 to 9, the arm 4 is connected to the first component. At the same time, the support 1 is used as a second component and is applied to the connection structure between the arm 4 and the support 1. The connection structure will be described in detail below.

In other words, in the embodiment shown in FIGS. 3 to 9, the arm 4 is made up of a pair of first and second outer cylinders 41 and 42 and an inner cylinder 43 that can be inserted into the outer cylinders 41 and 42. Make up
One end in the length direction of the inner cylinder 43 is inserted and fixed to the first outer cylinder 42, and the second outer cylinder 42 is slidably inserted into the other end in the length direction of the inner cylinder 43, and A lock mechanism 44 is provided between the outer cylinder 42 and the inner cylinder 43 to restrict the sliding of the second outer cylinder 42 with respect to the inner cylinder 43.

As shown in FIG. 7, the lock mechanism 44 has a through hole 45 formed at the other end of the inner cylinder 43 in the longitudinal direction.
And a plurality of engagement holes 46 formed in the second outer cylinder 42, a pair of lock pins 47 that can be inserted from the through hole 45 to extend over any engagement hole 46, and A leaf spring 48 for urging in a direction in which the lock pin 47 is engaged with one of the engagement holes 42a and 42b from the through hole 43a by a spring reaction force of the leaf spring 48; The second outer cylinder 42 is not slidable with respect to the inner cylinder 43, and the engaging hole 46 with which the lock pin 47 engages is arbitrarily changed to adjust the overall length of the arm 4.

The two outer cylinders 4 in the above arm 4
A fitting member 6 that can be fitted to the outer periphery of the columns 1a and 1b is fixed to the ends of the fitting members 1 and 42, and the entire length of the fitting member 6 in the axial direction is fixed to the outer peripheral wall of the fitting member 6. The fitting member 6 is provided with a fitting opening 7 which is open over the fitting member 6 so that the support column 1 can be fitted into the fitting member 6 from the outside in the radial direction, and the fitting member 6 is inserted through the fitting hole 7 as shown in FIG. And support 1
By rotating the fitting member 6 in the direction shown by the arrow T in FIG. 8 from the state where the fitting member 6 intersects with the Thus, the column 1 can be fitted into the fitting member 6.

More specifically, the fitting member 6 is formed from a cylindrical steel pipe, and a fitting opening 7 formed in the fitting member 6 is formed with a fitting member 6 as shown in FIGS. Open spirally from one axial end to the other axial end,
An upper holding wall portion 61 and a lower holding wall portion 62 for holding the outer peripheral surface of the support column 1 over substantially half a circumference thereof above and below the fitting member 6 with the fitting opening 7 interposed therebetween. And the direction of the opening on the side of the upper holding wall 61 and the direction of the opening on the side of the lower holding wall 62 in the fitting opening 7 are displaced by approximately 180 degrees. , The outer periphery of the column 1 is spirally held.

The pair of fitting members 6 provided at both ends of the arm 4 are formed symmetrically. The opening width of the fitting port 7 on the side of the upper holding wall 61 and the lower holding member are provided. The width of the opening on the holding wall portion 62 side is made slightly smaller than the outer diameter of the columns 1a and 1b, and when the columns 1a and 1b are fitted into the upper and lower holding walls 61 and 62, the upper and lower holding walls 61 62 is elastically deformed so that the opening of the fitting port 7 is opened.

In the embodiment shown in the figures, a columnar projection 10 is inserted into a through hole (not shown) formed in the column 1, and both ends of the projection 10 in the longitudinal direction are formed on the outer peripheral surface of the column 1. A groove-shaped first engaging portion 63 that engages with one end of the protrusion 10 on the upper and lower holding walls 61 and 62 that form the fitting member 6 while projecting more radially outward; The protrusion 1
And a second engaging portion 64 having a groove shape to be engaged with the other end of the first retaining wall portion 61 and the first and second retaining portions provided on one of the upper retaining wall portion 61 and the lower retaining wall portion 62. The engagement of the engagement portions 63 and 64 with the protrusions 10 prevents rotation and axial movement of the fitting member 6 with respect to the column 1.

Thus, the arm 4 provided with the fitting member 6 described above.
In order to bridge between the adjacent columns 1a and 1b, first, the length of the arm 4 is adjusted according to the interval between the adjacent columns 1a and 1b. Thereafter, as shown in FIG. 8, the lengthwise intermediate portion of the fitting port 7 in each fitting member 6 is
8A, the fitting members 6 are arranged in a cross shape with respect to the columns 1, and the fitting members 6
Is rotated in the direction of arrow X at
The outer peripheral surface of the column 1a is tightly fitted to the inner peripheral surface of the fitting member 6 through the upper portion, and as shown in FIG. 9, the upper holding wall 61 and the lower holding wall 62 hold the column 1a. It is. As the column 1 is closely fitted in the fitting member 6, the first engaging portion 63 formed on the lower holding wall portion 62 is engaged with one end of the projection 10, and at the same time, the other end of the projection 10 is engaged. The second engaging portion 64 formed on the lower holding wall portion 62 is also engaged with the arm member 4 so that the arm 4 is erected at a predetermined position between the columns 1 so that the arm 4 moves vertically. Nothing.

In the above embodiment, however, the first engaging portion 63 and the second engaging portion 64 are also formed on the upper holding wall portion 61, so that the support members 1a and 1b of the fitting member 6 can be used. When the first engaging portion 6 formed on the upper holding wall portion 61 is turned upside down at the time of fitting,
The third and second engagement portions 64 can be engaged with the projections 10 of the column 1.

In the above embodiment, the axial length of the arm 4 can be adjusted by slidably inserting the second outer cylinder 42 constituting the arm 4 into the other end of the inner cylinder 43 in the longitudinal direction. However, as schematically shown in FIG. 10, the arm 4 may be formed integrally from a single steel pipe. Further, in the above embodiment, the fitting port 7 formed in the fitting member 6 is spirally opened from one axial end to the other axial direction of the fitting member 6, and the fitting port 7 is sandwiched therebetween. An upper holding wall portion 61 and a lower holding wall portion 62 for holding the outer peripheral surface of the support column 1 over substantially half a circumference thereof are integrally formed in a spiral shape above and below the fitting member 6, respectively. The direction of the opening on the upper holding wall 61 side and the direction of the opening on the lower holding wall 62 side are displaced by approximately 180 degrees, so that these two holding walls 61.
According to 62, the outer periphery of the column 1 is held in a spiral shape. However, as shown in FIGS.
The fitting member 6 is formed so as to be bent in a crank shape from the axial center to the axial both ends, and the opening direction of the fitting port 7 on the side of the upper holding wall 61 and the lower holding wall 62. The direction of the opening on the side may be displaced by approximately 180 degrees.

10 to 12, reference numeral 60 denotes a fixing piece for fixing the fitting member 6 to both ends in the longitudinal direction of the arm 4. In the above embodiment, the fitting members 6 are fixed to both ends of the arm 4. However, the present invention is not limited to this. For example, the fitting member 6 is provided on the handrail 2, and the handrail is provided. When connecting the two handrails 2 to the adjacent column 1a, the handrail 2 may be connected to the column 1a via the fitting member 6.

As shown in FIGS. 13 and 14, a bracket 65 having a U-shaped cross section is fixed to the outer peripheral surface of the fitting member 6 by welding, and a pivot 66 protruding from the bracket 65 is provided.
Is inserted into a through hole (not shown) formed in the brace 50, and the insertion end is swaged so that the fitting member 6 can be pivotally moved to the brace 50 via the pivot shaft 66. The fitting member 6 may be pivotally mounted, and even in the case of the fitting member 6, the fitting member 6 is arranged in a cross shape with respect to each of the columns 1 a, and then the fitting member 6 is rotated with respect to the brace 50 to By tightly fitting the outer peripheral surface of the column 1 a to the inner peripheral surface of the fitting member 6 through the fitting port 7, the large brace 5 is inserted through the fitting member 6.
0 can be connected to the support 1a.

[0021]

As described above, according to the first aspect of the present invention, even if a tool such as a tightening tool or a hammer is not used,
With a simple operation of displacing the fitting member coaxially with the second component from a state where the fitting member provided on the first component crosses the second component, the fitting member is The second component member can be fitted into the fitting member from the outside of the fitting member through the provided fitting opening, and the first component member can be securely connected to the second component member. As a result, the connecting operation of the first component to the second component can be easily performed, and the safety of the operation is improved.

According to the second aspect of the present invention, since the axial length of the first component member can be adjusted, for example, when the first component member is connected to a pair of second component members, Even when the distance between the second components is different, it is possible to respond immediately. According to the third aspect of the present invention, the fitting member is rotatably supported with respect to the first constituent member. The invention can be applied.

According to the fourth aspect of the present invention, a projection is provided on the outer peripheral surface of the second component member, while the fitting member has
A first component member connected via the fitting member by providing an engagement portion for engaging the projection and preventing rotation and axial movement of the fitting member with respect to the second component member; Can be prevented from rotating and moving in the axial direction with respect to the second component, and the connection of the first component to the second component as a whole is further strengthened.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a scaffold to which the present invention is applied.

FIG. 2 is a schematic side view of a scaffold to which the present invention is applied;

FIG. 3 is a partially cutaway front view of a brace to which the present invention is applied.

FIG. 4 is a side view of the same arm tree.

FIG. 5 is an enlarged sectional view taken along line UU in FIG. 3;

FIG. 6 is an enlarged sectional view taken along line VV in FIG. 3;

FIG. 7 is a cross-sectional view of a main part of a crosspiece.

FIG. 8 is an explanatory view showing a process of attaching the fitting member to the support.

FIG. 9 is an explanatory view showing a state in which a fitting member is attached to a column.

FIG. 10 is a front view showing another embodiment of a brace to which the present invention is applied.

11 is an enlarged sectional view taken along line WW in FIG.

12 is an enlarged sectional view taken along line XX in FIG.

FIG. 13 is a front view of a main part in which the present invention is applied to a brace.

FIG. 14 is a plan view of a main part in which the present invention is applied to a main bracing.

[Explanation of symbols]

 1a, 1b Support (second component) 10 Projection 4 Arm (first component) 6 Fitting member 63 First engaging part (engaging part) 64 Second engaging part (engaging part) 7 Fitting opening

Claims (4)

[Claims] 1. A connecting structure of a first constituent member and a second constituent member constituting a scaffold, wherein the first constituent member is provided with a fitting member capable of fitting around the outer periphery of the second constituent member. By displacing the fitting member coaxially with the second component from a state where the fitting member crosses the second component, the second component is attached to the outer peripheral wall of the fitting member. A connection structure for a scaffolding component, wherein a fitting port is provided so that the fitting member can be fitted into the fitting member from outside the fitting member. 2. The scaffolding component connecting structure according to claim 1, wherein the axial length of the first component is adjustable. 3. The connecting structure for a scaffolding component according to claim 1, wherein the fitting member pivotally supports the first component. 4. A second component member has a projection projecting from an outer peripheral surface of the second component member, and a fitting member engages with the projection to engage the fitting member with the second component member. An engaging portion for preventing rotation and axial movement is provided.
3. The connecting structure of the scaffold constituent member according to 3.