JPS6333528B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolation construction method for a truss roof structure and an apparatus therefor.

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

However, with such conventional methods, there are problems such as safety problems due to increased work at high places, prolongation of construction period, and complicated lift-up equipment.

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 is formed from a pair of truss roof structure plates 1 and 2 to have a chevron-shaped cross section, and the lower part of the ridge portion ends 1A and 2A is triangular in cross section. There is a notch in the shape, and the upper parts are pivoted together with pin 3,
The eave part ends 1B and 2B of the structural plates 1 and 2 are the foundation surface
It is said to be able to swing freely relative to the GL. Here, the eave portion ends 1B, 2B and the foundation surface GL are connected by support legs 4. Support legs 4 and ends 1B, 2B
As shown in FIG.
As shown in FIG. 4, the supporting legs 4 are pivoted on the outside by pins 6, so that the supporting legs 4 are tilted outward.

In a truss roof structure with such a configuration,
The support legs 4 are tilted outward and the pair of truss roof structural plates 1 and 2 are assembled into the ground in a horizontal state. Next, support leg 4
is supported by the support mechanism 7 from both sides in the roof slope direction, and the eave part end 1 is lifted up by the lift-up mechanism 8.
Support the lower parts of B and 2B and raise them up to construct a truss roof structure.

The support mechanism 7 includes a wire rope 9 and a winch 10
A traction support mechanism comprising a winch 10 and
A wire rope 9 is wound around a pulley 12 on the support leg side and a pulley 11 on the winch side. Such a support mechanism 7 maintains the horizontal force caused by wind force, seismic force, etc. during the lift-up process, and controls the attitude of the roof.

The lift-up mechanism 8, as shown in FIG.
An upper support stand 13 on which the lower parts of the ridge end portions 1A and 2A are slidably placed, multiple cylindrical bodies 14 disposed at the lower part of this upper support stand 13, and Lower support frame 15 arranged at the bottom
, a fluid pressure cylinder 16 disposed within this cylindrical body 14 , and a piston shaft 1 of this fluid pressure cylinder 16
The lift-up member 17 is pivotally attached to the tip of 6A.

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. To move the ends 1A and 2A, the sixth
As shown in FIGS. 6 and 7, rails 18 may be disposed on the upper support base 13 and wheels 19 may be attached to the ends 1A and 2A, or as shown in FIGS. 6 and 8, In addition to attaching the hemispherical convex portion 20, a receiving portion 21 for receiving the convex portion 20 is provided on the upper support base 13, and a Teflon plate 2 is placed between the convex portion 20 and the receiving portion 21.
2, a Teflon plate 23 is provided on the lower surface of the receiving part 21,
Furthermore, a retainer 24 may be attached to the upper support base 13. Further, in order to avoid interference between the ends 1A, 2A and the upper support 13 during lift-up, the upper support 13 is bent downward from near the center.

The lower support frame 15 has an outermost cylindrical body 14n.
Wheels 25 and outriggers 26 are disposed at the lower portions so that the device can be moved, and the outriggers 26 support the device when it is lifted up.

The fluid pressure cylinder 16 has a cylinder base end pivoted to the lower support frame 15, and its stroke is equal to the cylinder body 1.
It is set approximately equal to 4.

The lift-up member 17 has a built-in protruding pin 27 that protrudes in the horizontal direction from the roof slope direction.
As shown in FIG. 0, it is moved forward and backward by a fluid pressure cylinder 28, and the tip end is inserted into an insertion hole 29 formed in the upper part of the cylinder body 14. 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. Further, 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 connected to the hydraulic cylinder 16.
raise it sequentially from the inside.

The raised inner cylindrical body 14i and the outer cylindrical body 14
o are connected to each other by stopper pieces provided at the upper and lower ends thereof. That is, as shown in FIGS. 11 and 13, an inner stopper piece 33 is fixed to the outer surface at the lower end of the inner cylinder 14i, and an inner stopper piece 33 is fixed to the inner surface at the upper end of the outer cylinder 14o. An outer stopper piece 34 is fixed at a spaced interval such that the receiving piece 3 can pass between the pieces 33 and 34.
The load is applied by intervening 5. 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 portion is provided on the inner surface of the outer cylindrical body 14o, and includes a wedge receiving portion 36 having a tapered surface 36A inclined upwardly and outwardly on the inner surface.
and a wedge guide portion 37 provided on the outer surface of the inner cylindrical body 14i so as to sandwich the wedge receiving portion 36;
It has a tapered surface 38A corresponding to the tapered surface 36A, and consists of a lashing wedge 38 inserted between the wedge receiving portion 36 and the inner cylinder 14i.

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 eight internal and external support mechanisms 7. Here, the operation of the winch 10 is such that the inner winch is used for hoisting and the outer winch is used 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 taut at all times. It is desirable to set the tension of the wire rope 9 to about 1/3 to 1/4 of the calculated horizontal force. 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 caused by the winch hoisting on the inside exceeds the set load and this winch turns OFF.
Due to the rewinding of the outside winch, the load quickly decreases to below the set load and turns OFF. Therefore,
The winch turns on and off frequently depending on the set load.

If the winch 10's hoisting and unwinding are slower than the lift-up rise: Because the inner winch hoists slowly, the load is below the set load and is always ON, and because the outer winch's unwind is slow, the load rises and exceeds the set load.
It is always ON, and therefore, 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, the lifting of the fluid pressure cylinder 16 of the lift-up device is turned OFF. If the load returns to within the set load again, 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 exhibit this phenomenon depending on the lift-up speed and the position of the lift-up upper support pin on the plane changes from side to side, so each lift-up of each cylinder Measure the position and correct the winch speed.

The speed of the winch is controlled by a transmission, which turns the winch ON and OFF and lift-up ON.
Control the winch gear ratio 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 only one winch 40 is used to support from both sides. 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, with a fixed pulley 45 fixed to the winch side and a fixed pulley 46 fixed to the opposite side. Wire ropes 49 and 50 are wound around a fixed pulley and a movable pulley from two drums 47 and 48, respectively, and one end is fixed to the fixed pulley to receive horizontal force.

Next, FIGS. 17 and 18 show another example of the connection method between the inner cylinder 14i and the outer cylinder 14o, where the cylinder is rectangular and the outer cylinder An outer stopper piece 51 is attached to a corner of the body 14o, and an inner stopper piece 52 is attached to a corner of the inner cylinder 14i. The stopper piece 52 has a groove 53 through which the stopper piece 51 can pass, and a large engagement hole 5 that is continuous with the groove 53.
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 these opposing surfaces. It is tightened with bolts and nuts 56. With such a configuration, the cylindrical body can be secured securely due to the wedge effect, and the fixing piece 55 can also be prevented from falling off.

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

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

This eliminates the need to work at heights, improving work efficiency and improving safety.

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

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

[Brief explanation of the drawing]

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 a support leg, and FIG.
The figure is a partially enlarged view showing the lower part of the support leg, FIG. 5 is a partially enlarged view showing the support mechanism, FIG. 6 is a partially sectional view showing the lift-up device, and FIGS. 9 is a cross-sectional view showing another embodiment of the cylindrical body, FIG. 10 is a vertical cross-sectional view showing a lift-up member of a lift-up device, and FIG. 11 is a vertical cross-sectional view showing a stopper piece. ,
Fig. 12 is a longitudinal sectional view showing the lashing wedge, Fig. 13 is a cross sectional view of the lift-up device, Fig. 14 is a front view showing another embodiment of the support mechanism, and Fig. 15 is a similar support mechanism. FIG. 16 is a partially enlarged view showing the legs; FIG. 16 is a schematic perspective view showing a similar traction mechanism; FIG.
Figure 8 is a longitudinal sectional view showing another example of the stopper piece;
FIG. 1, 2...Truss roof structure version, 1A, 2A...
Ridge part end, 1B, 2B... Eave part end, 3...
Pin, 4... Support leg, 5... Pin, 6... Pin,
7...Support mechanism, 8...Lift-up mechanism, 9...
...wire rope. 10...Winch, 11,12
... Pulley, 13 ... Upper support base, 14 ... Cylindrical body,
15... Lower support frame, 16... Fluid pressure cylinder, 16A... Piston shaft, 17... Lift up member, 18... Rail, 19... Wheel, 20...
... Convex portion, 21 ... Receiving portion, 22, 23 ... Teflon plate, 24 ... Stopper, 25 ... Wheel, 26 ...
Outrigger, 27... Projection 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, 3
9...Load cell, 40...Winch, 41...
Wheel, 42... Guide rail, 43, 44... Moving pulley, 45, 46... Fixed pulley, 47, 48... Drum, 49, 50... Wire rope, 51... Outer stopper piece, 52... Inner stopper piece ,
53...groove, 54...engaging hole, 55...fixing piece, 56...bolt/nut.

Claims (1)

[Scope of Claims] 1 A pair of truss roof structural plates formed into 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 method for constructing a truss roof structure, the method comprising:
A vibration-isolated construction method for a truss roof structure, characterized in that after the pair of truss roof structure plates are assembled into the ground in a horizontal state, the ends of the pivoted ridge portions are raised. 2 Construction of a truss roof structure formed from a pair of truss roof structural slabs to have 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. It is a device,
a lift-up mechanism that supports and raises the lower part of the end of the ridge part; a tip end thereof is pivoted to the end of the eave part; a base end thereof is pivoted to the foundation surface, and is swingable in the direction of the roof slope; 1. A vibration-isolating construction device for a truss roof structure, comprising a supporting leg having a structure of 1000 mm, and a supporting mechanism that supports the supporting leg 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 placed at the bottom of this upper support base, and a plurality of cylinders arranged at the bottom of the cylindrical bodies. A lift-up member is connected to the tip of the piston, and the lift-up member is disposed inside the multiple cylindrical body and has a cylinder base end pivoted to the lower support frame and a protruding pin protruding from both sides in the horizontal direction. It consists of a fluid pressure cylinder,
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 frame, and the protruding pin is attached to the upper part of each cylinder. An insertion hole for insertion is bored, and stopper pieces are provided at the upper and lower parts of each cylinder to allow the inner cylinder to be supported by the outer cylinder after the inner cylinder is raised by the fluid pressure cylinder. A vibration-isolating construction device for a truss roof structure according to claim 2, wherein the vibration-isolating construction device is attached to a truss roof structure. 4. The vibration-isolated erecting device for a truss roof structure according to claim 2 or 3, wherein the support mechanism is a traction support mechanism equipped with a wire rope and a winch. 5. Construction of 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. It is a device,
A vibration-isolated construction method for a truss roof structure characterized by comprising a lift-up mechanism that supports and raises the lower part of the end of the ridge part, and a support mechanism that supports the eave part from both sides in the direction of the root slope of the end room. Device. 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 plurality of cylinders arranged at the bottom of the cylindrical bodies. A lift-up member is connected to the tip of the piston, and the lift-up member is disposed inside the multiple cylindrical body and has a cylinder base end pivoted to the lower support frame and a protruding pin protruding from both sides in the horizontal direction. It consists of a fluid pressure cylinder,
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 frame, and the protruding pin is attached to the upper part of each cylinder. An insertion hole for insertion is bored, and stopper pieces are provided at the upper and lower parts of each cylinder to allow the inner cylinder to be supported by the outer cylinder after the inner cylinder is raised by the fluid pressure cylinder. A vibration-isolating construction device for a truss roof structure according to claim 5, wherein the vibration-isolating construction device is attached to a truss roof structure. 7. The vibration-isolated erecting device for a truss roof structure according to claim 5 or 6, wherein the support mechanism is a traction support mechanism equipped with a wire rope and a winch.