JPS58153846A - Vibration-proof building method and apparatus of truss roof structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vibration-isolated construction method for a truss roof structure, 11.
1. Concerning the law and its devices.

Conventional construction methods for truss roof structures include a method of constructing the structure using a truck crane, or a method of assembling the structure using a truck crane and then lifting it up.

However, with such conventional methods, there are problems such as safety problems due to a large amount of work being done at heights, a prolonged construction period, and a complicated lift-up device.

This invention was proposed to solve these problems all at once, and its purpose is to provide a vibration-isolated construction method that allows for safe assembly near the ground and to shorten the construction period. The goal is to provide equipment.

The present invention will be described below based on an illustrated embodiment. As shown in FIGS. 1 and 2, the truss roof structure according to the present invention has a chevron-shaped cross section (formed from a pair of truss roof structural plates 1 and 2), and the lower part of the ridge portion ends IA and 2A is triangular in cross-section. Shape F is notched, and the upper part of it is pin 3,
The eave portion ends IB and 2B of the structural plate 1.2 are swingable with respect to the base surface GL. Here, the eave portion ends IB, 2B and the base surface GL are connected by support legs 4. The support leg 4 and the end portions IB and 2B are pivoted on the lower side by a pin 5, as shown in FIG. 3, and the support leg 4 and the base surface GL are connected on the outside as shown in FIG. It is pivoted by a pin 6, which allows the support leg 4 to tilt outward.

In the truss roof structure having such a configuration, the supporting legs 4
Fold outward and assemble the pair of truss roof structural plates 1.2 horizontally. Next, the support leg 4 is supported by the support mechanism 7 from both sides in the direction of the roof slope, and the lift-up mechanism 8
The lower portions of the eave portion ends IB and 2B are supported and raised to construct a truss roof structure.

The support mechanism 7 is a traction support mechanism equipped with a wire rope 9 and a winch 10, in which the wire rope 9 from the winch 1° is wrapped around a pulley 12 on the support leg side and a pulley 11 on the winch side. Such a support mechanism 7 controls the attitude of the roof by retaining water force caused by wind force, seismic force, etc. during the lift-up process.

As shown in FIG. 6, the lift-up mechanism 8 includes an upper support base 13 on which the lower portions of the ridge end portions IA and 2A are slidably placed, and a multiplex support base 13 arranged under the upper support base 13. A cylindrical body 14, a lower support pedestal 15 disposed at the bottom of this cylinder 14, a fluid pressure cylinder 16 disposed within this cylinder 14, and a piston shaft of this fluid pressure cylinder 16. The lift-up member 17 is pivotally attached to the tip of the lift-up member 16A.

The upper support base 13 is a beam member extending in the direction of the roof slope, and is pivotally attached to the upper part of the innermost cylindrical body 14a.

In order to move the end portions IA and 2A, as shown in FIGS. 6 and 7, rails 18 may be provided on the upper support base 13 and wheels 19 may be attached to the end portions IA and 2A. As shown in FIGS. 6 and 8, the receiving part 2 is attached with the hemispherical convex part 20 and the convex part 2o-44 is mounted on the -F part support base 13.
1, and a Teflon plate 22 is provided between the convex part 20 and the receiving part 21.
Alternatively, a Teflon plate 23 may be provided on the lower surface of the receiving portion 21, and a retainer 24 may be further attached to the upper support base 13. Further, in order to avoid interference between the ends IA, 2A and the upper support 13 during lift-up, the upper support 13 is bent downward from near the center.

The lower part of the outermost cylindrical body 14n is connected to the lower support frame 15, and wheels 25 and outriggers 26 are arranged at the lower part so that the device can be moved. -26 to support the device.

The fluid pressure cylinder 16 has a cylinder base end connected to the lower support frame 1.
5, and its stroke is approximately equal to that of the cylindrical body 14.

The lift-up member 17 has a built-in protruding pin 27 that protrudes horizontally from the roof slope direction, and is moved forward and backward by a fluid pressure cylinder 28 as shown in FIG.
Insertion drilled in the upper part of :l.

Inserted into hole 29 and south. Further, a limit switch 30 is attached to the tip of the protruding pin 27, and the limit switch 30 detects the reinforcing plate 31 provided with the insertion hole 29 and stops the operation of the cylinder 28. Furthermore, if the limit switch 30 is defective, the pressure increase at the time when the end of the protruding pin 27 hits the reinforcing plate 31 is detected and the supply of pressure oil is stopped. Furthermore, since the piston shaft 16A and the lift-up member 17 are pivotally connected, a spring 32 is attached to hold the lift-up member 17 horizontally.

The multiple cylindrical bodies 14 are stored in the required number in a fishing rod style according to the height of the roof, and are raised one by one from the inside by a fluid pressure cylinder 16.

The raised inner cylinder 14i and outer cylinder 14o are connected by stopper pieces provided at their upper and lower ends. That is, as shown in FIGS. 11 and 13, the inner stopper piece 33 is fixed to the outer surface at the lower end of the inner cylinder 14i, and the inner stopper piece 33 is fixed to the inner surface at the upper end of the outer cylinder 14o. Outer stopper pieces 34 are fixed at intervals such that the stopper pieces 33 can pass therethrough;
A load is applied by interposing a receiving piece 35 between the pieces 33 and 34.

As shown in FIG. 13, three such stopper pieces are provided at equal intervals in the circumferential direction.

Furthermore, since this alone cannot restrict the movement in the radial direction, lashing wedges are provided at three locations equally spaced in the circumferential direction, as shown in FIGS. 12 and 13. The lashing wedge part is provided on the inner surface of the outer cylindrical body 14o, and includes a wedge receiving part 36 that has a tapered surface 36A that slopes upwardly and outwardly on the inner surface, and a wedge receiving part 36 that is provided on the outer surface of the inner cylindrical body 14i. The lashing member has a cutting guide portion 37 provided to sandwich the wedge receiving portion 36, and a tapered surface 38A corresponding to the tapered surface 36A, and is inserted between the wedge receiving portion 36 and the inner cylindrical body 14i. Wedge 3
It consists of 8.

The cylinder 14 is not limited to a cylindrical shape, but may be rectangular as shown in FIG. 9. In this case, the stopper pieces and lashing wedges are provided at four corners.

In such a configuration, a unit roof structure is constructed using two lift-up devices 8 and an internal/external platform support mechanism 7. Here, the winch 10 is operated by the inner winch for hoisting and the outer winch for rewinding. If the wire rope 9 of the winch 10 is loosened during lift-up, the horizontal force from the loosened side cannot be handled, so the wire rope 9 of the inner and outer winches 10 must be kept tensioned at all times. The tension of the wire lobe 9 is 1/ of the calculated horizontal force.
It is desirable to set it to about 3 to 1/4.

This value is the minimum load that absorbs the initial elongation of the wire rope 9 etc. and does not cause a large displacement even if the maximum horizontal force is applied. The speed adjustment during lift-up is performed by a load cell 39 attached to the pulley 12 as shown in FIG. 3, and the following conditions are met.

■ When the winch 10 is hoisted and unwinded faster than the lift-up rise: The increase in load due to hoisting of the inner winch exceeds the set load and this winch is turned off, and the load decreases quickly due to the rewinding of the outer winch and becomes below the set load. OFF
becomes. Therefore, the winch is turned on and off frequently for the set load.

■ When winch 10 hoists and unwinds slower than the lift-up rise: Because the inner winch hoists slowly, the load becomes less than the set load and is always ON.As the outer winch unwinds slowly, the load rises and becomes more than the set load, and is always ON. ON, therefore, the lifting of the hydraulic cylinder 16 of the lift-up device is turned OFF when the minimum value of the hoisting load and the maximum value of the unwinding load, which are determined separately for the set load, are reached. If the load returns to within the set load again, the lift-up will resume, but the fluid pressure cylinder 16 will be turned on and off frequently.

■ When the speeds of the left and right sides of the roof are different: The left and right winch groups will exhibit this phenomenon depending on the lift-up speed and the conditions of ■ and ■, and the position of the lift-up upper support pin on the plane will shift from side to side. The position of each cylinder is measured each time it is lifted up, and the winch speed is corrected.

Winch speed control forest, carried out by transmission, 1.1 Inch ON/OFF and lift up ON.

Control the gear ratio of the winch so that it does not turn off frequently.

The mutual lifting speeds of the two lift-up devices are adjusted by flow rate regulating valves so that the pressure oil in the fluid pressure cylinders 16 is the same. Measure the speed difference each time the cylinder lifts up and correct the flow rate adjustment valve.

Next, FIGS. 14 to 16 show a second embodiment, in which the winch 40 is supported from both sides by only one winch 40. In this case, the truss roof structural plates 1 and 2 and the support leg 4 are integrally connected and are swingably supported by wheels 41 and guide rails 42 attached to the lower part of the support leg 4. Furthermore, movable pulleys 43 and 44 are attached to both sides of the lower part of the support leg 4 in the direction of the roof slope, and a fixed pulley 46 is fixed to the opposite side of the fixed pulley 452 on the winch side. Wire ropes 49, 50 are wound around a fixed pulley and a movable pulley from two drums 47, 48, and one end is fixed to the fixed pulley to receive horizontal force.

Next, what is shown in FIGS. 17 and 18 is the inner cylinder 14.
This figure shows another example of the method of connecting i and the outer cylindrical body 140, in which the cylindrical body is rectangular, and the outer stopper piece 51 is attached to the corner of the outer cylindrical body 140. An inner stopper piece 52 is attached to the corner of 14i. The stopper piece 52 is the same as the stopper piece 51
a groove 53 through which the
4. As shown in FIG. 17, the opposing surfaces of the stopper pieces 51 and 52 are tapered surfaces that widen outward, and a fixing piece 55 having a tapered surface corresponding to the tapered surface is inserted between the opposing surfaces. , are tightened with bolts and nuts 56. With such a configuration, the cylindrical body is securely secured due to the wedge effect, and the fixing piece 55
It also prevents the material from falling off.

As described above, the present invention provides the following effects.

■ It is possible to reduce the need for construction scaffolding, etc.

■ Eliminating work at heights improves work efficiency and improves safety.

■ Since the device is relatively simple, it is easy to handle and transport.

■ This lift-up mechanism is made up of multiple cylindrical bodies and can be moved while being stored like a fishing rod, so after constructing a truss roof structure, it is possible to assemble other truss roof structures. After the construction is completed, the construction work can be performed on other truss roof structures, and the lift-up mechanism can be moved under the assembled truss roof structure to perform the construction work, thereby improving the construction work.

[Brief explanation of the drawing]

FIGS. 1 and 2 are a plan view and a front view showing a truss roof structure according to the present invention, FIG. 3 is a partially enlarged view showing a connecting portion between a roof structure plate and support legs, and FIG. 4 is a support FIG. 5 is a partial enlarged view showing the lower part of the leg, FIG. 5 is a partial enlarged view showing the support mechanism, FIG. 6 is a partial cross-sectional view showing the lift-up device, and FIGS. Cross-sectional view, ■-■ line cross-sectional tooth, No. 9
The figure is a cross-sectional view showing another embodiment of the cylindrical body, FIG. 10 is a longitudinal cross-sectional view showing a lift-up member of the lift-up device,
Figure 1 is a vertical cross-sectional view showing the stopper piece, Figure 12 is a vertical cross-sectional view showing the lashing ridge, Figure 13 is a cross-sectional view of the lift-up device, and Figure 14 is another implementation with a different support mechanism. A front view showing an example; FIG. 15 is a partially enlarged view showing a similar support leg;
FIG. 16 is a schematic perspective view showing a similar traction mechanism, FIGS. 17 and 18 are longitudinal sectional views showing another example of the stopper piece,
FIG. 1.2...Truss roof structural plate, IA, 2A...ridge part end, 1B, 2B...eave part end, 3. ridge pin, 4...support leg, 5...pin, 6...pin ,
7. Support mechanism, 8. Lift up mechanism, 9. Wire rope, 10.
・Winch, 11.12°0 pulley 113... Upper support stand, 14... Cylindrical body, 15°° lower support frame 16... Fluid pressure cylinder, 16A... Piston shaft, 17
...Lift-up member, 18..Rail, 19..Wheel, 20..Convex part, 21..Receiving part, 22.23..Teflon plate, 24..Removal prevention, 25°°Wheel 1 26.. Outrigger 127...Protruding pin, 28...Fluid pressure cylinder, 29...Insertion hole, 30...Limit switch, 31...Reinforcement plate, 32...Spring, 33...Inner stopper piece 34...Outer stopper Piece, 35... Receiving piece, 36... Wedge receiving part, 36A... Tapered surface, 37... Wedge guide part, 38... Lashing wedge, 38A... Tapered surface, 3911... Load cell,
40@・Winch, 41−・Wheel, 42・・Guide rail, 43.44・・Moving pulley, 45.46・・Standed pulley, 47.48・・Drum, 49.50・・Wire rope, 51・Paper Outer stopper piece, 52...Inner stopper piece, 53...Groove, 54...Retaining hole, 55...Fixing piece, 56...Bolt/nut. 614 Figure 7 Funeral 8-1 Figure 9 Figure 14 Figure 15 Figure 16

Claims (7)

[Claims] (1) A truss roof structure formed from a pair of truss roof structural plates with a chevron-shaped cross section, the ends of the ridge portions being pivoted to each other, and the ends of the eaves portion being able to swing freely relative to the foundation surface. A vibration-isolated construction method for a truss roof structure, which comprises assembling the pair of truss roof structural plates in a horizontal state and then raising the pivoted end of the ridge part. . (2) A truss roof structure formed from a pair of truss roof structural plates with a chevron-shaped cross section, the ends of the ridge portions being pivoted to each other, and the ends of the eaves portion being able to swing freely relative to the foundation surface. The construction device includes a lift-up mechanism that holds and raises the lower part of the end of the ridge part, a tip part of which is pivoted to the end of the eave part, and a base end that is pivoted to the foundation surface. a support leg that is attached to the roof and is swingable in the direction of the roof slope;
A vibration-isolated construction device for a truss roof structure, comprising a support mechanism that supports the support legs from both sides in the direction of the roof slope. (3) The lift-up mechanism consists of an upper support base on which the lower part of the end of the ridge part is slidably placed, multiple cylindrical bodies arranged at the bottom of this upper support base, and 4 lower parts of the cylindrical bodies. and a lift-up member disposed inside the multiple cylindrical bodies, the cylinder base end of which is pivoted to the lower support frame, and a lift-up member having protruding pins that protrude from both sides in the horizontal direction. The upper part of the innermost cylinder among the multiple cylinders is connected to the upper support base, and the lower part of the outermost cylinder is connected to the lower support pedestal. An insertion hole into which the ejecting pin is inserted is bored in the upper part of each cylinder, and an insertion hole into which the ejecting pin is inserted is formed in the upper and lower parts of each cylinder. 3. The vibration-isolating construction device for a truss roof structure according to claim 2, further comprising a stopper piece that allows the inner cylinder to be supported by the outer cylinder. (4) Claim 2, characterized in that the support mechanism is a traction support mechanism equipped with a wire rope and a winch.
A vibration-isolating construction device for a truss roof structure according to item 1 or 3. (5) A truss roof structure formed from a pair of truss roof structural plates with a chevron-shaped cross section, the ends of the ridge portions being pivoted to each other, and the ends of the eaves portion being able to swing freely relative to the foundation surface. A truss roof construction device comprising: a lift-up mechanism that supports and raises the lower part of the end of the ridge; and a support mechanism that supports the eave from both sides in the direction of the root slope of the end of the eave. Vibration-isolated construction equipment for structures. (6) The lift-up mechanism consists of an upper support base on which the lower part of the end of the ridge part is slidably placed, multiple cylindrical bodies placed at the bottom of this upper support base, and a The installed lower support frame and 1. A hydraulic cylinder is disposed inside the multiple cylindrical bodies, and one end of the cylinder is pivoted to the lower support frame, and a lift-up member having protruding pins protruding from both sides in the horizontal direction is connected to the tip of the piston. The upper part of the innermost cylinder among the multiple cylinders is connected to the upper support base, the lower part of the outermost cylinder is connected to the lower support frame, and the upper part of each cylinder has the protrusion. An insertion hole into which a pin is inserted is bored in the upper and lower parts of each cylinder, and after the inner cylinder is raised by the hydraulic cylinder, the inner cylinder can be supported by the outer cylinder. 6. The vibration-isolating construction device for a truss roof structure according to claim 5, wherein a stopper piece is attached. (7) Claim 5, characterized in that the support mechanism is a traction support mechanism equipped with a wire rope and a winch.
Item 6 is a vibration isolation construction device for a truss roof structure as described in item 6.