JPH08144529A - Fixing pin mounting-demounting device - Google Patents

Abstract

PURPOSE: To attain weight reduction and downsizing of a fixing pin mounting- demounting device by arranging a fixing pin in a temporarily arranged column so as to be freely inserted and extracted, respectively separately arranging elastic bodies before and behind a slidingly movable member, and connecting the slidingly movable member and a piston device to each other through a connecting member CONSTITUTION: When a roof is forcedly changed by earthquake force and wind pressure force in a condition where a fixing pin 10 is fitted to and inserted into a fixing pin hole 21 of a temporarily arranged column 23, the fixing pine 10 is made impossible in sliding motion. In this case, this forced displacement is transmitted to a shifter 11 through a piston device 14 and a rotary member 15, and the displacement is absorbed to slidably support the shifter 11 by front and rear off springs 12 and 13. In that case, reaction of the front and rear springs 12 and 13 is transmitted to the piston device 14, and this reaction is restricted to a small value by designing a spring constant of the springs properly small. Therefore, a load transmitted to the piston device 14 can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing pin attaching / detaching device, and more specifically, a structure constructed sequentially from lower floors under a roof while a previously constructed roof is lifted up along a temporary pillar. The present invention relates to a device for attaching and detaching a fixing pin of a lift-up device used for lift-up construction.

[0002]

2. Description of the Related Art Currently, in order to automate building construction,
Along with the robotization of construction, a construction method of a multi-layer building has been proposed in which the upper part of the building frame is covered with a large roof, and this is lifted up by a jack to continue the construction floor,
Some have been implemented. In this construction method, in order to obtain a space for construction work on the construction floor, the large roof is raised with a jack while attaching and detaching the fixing pin to the hole provided in the temporary support pillar,
This large roof is supported by temporary columns, and members such as main pillars and beams on the construction floor are set between the construction floor slab and the large roof.

Conventionally, attachment and detachment of a fixing pin used in such a lift-up construction method for a multi-story building is performed by a piston device directly fixed to the fixing pin, that is, a hydraulic cylinder, an electric screw rod or the like.

[0004]

However, in the system in which the piston device is directly connected to the fixing pin, when the horizontal force acts on the structure or roof under construction due to seismic force, wind pressure, etc., the temporary support column and the fixing pin are rubbed with each other. The horizontal force is directly transmitted to the piston device because it is fixed by. When the horizontal force is transmitted as described above, a large load is applied to the piston device, which has a drawback that an accident may occur in which the piston device is damaged. In addition, in order to make the piston device capable of withstanding the load due to the horizontal force, the capacity of the piston device must be increased, and therefore, there is a problem that the entire attachment / detachment device for the fixing pin also increases in weight and becomes large. .

The present invention has been made to solve the above-mentioned problems, and its object is to prevent the load due to the horizontal force even when the horizontal force acts on the structure or roof under construction due to seismic force or wind pressure. Accordingly, it is an object of the present invention to provide a fixing pin attaching / detaching device which is not transmitted to a piston device and therefore allows a fixing pin to be attached / detached with a small and simple device.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned object, and the gist thereof is to lift a pre-constructed roof up along a temporary support pillar and to successively lift it under the roof. In a lift-up device used for a lift-up construction for constructing a structure from a lower floor, a fixing pin that can be freely inserted into and removed from a plurality of holes provided in the temporary support column, and a slide that slides along the axis of the fixing pin. A fixing pin attaching / detaching device comprising a moving member, elastic bodies provided separately before and after the sliding member along an axis of the fixing pin, and an expansion / contraction means connected to the sliding member via a connecting member. is there.

The fixing pin attaching / detaching device of the present invention can be applied to other than the lift-up device as long as it is a fixing pin fitted into a hole or a recess.

In the fixing pin attaching / detaching device of the present invention, the sliding member that slides along the axis of the fixing pin means the fixing pin even when the fixing pin receives a horizontal force in its axial direction. The sliding member can slide along its axis and its horizontal force does not have to be directly transmitted to the sliding member itself. For example, a plate body, a tubular body or a body having a hole through which the shaft of the fixing pin can pass. It may be a composite member of a plate body and a tubular body.

In the fixing pin attaching / detaching device of the present invention, the elastic bodies provided separately before and after the sliding member along the axis of the fixing pin are the horizontal forces acting in both directions of the axis of the fixing pin. Any elastic body can be used as long as it can be absorbed by elasticity and can transmit the expansion / contraction motion from the expansion / contraction means transmitted to the connecting member to the fixing pin. Examples of such elastic body include a spiral spring and a plate. It can be a spring or the like. In this way, by providing elastic bodies separately before and after the sliding member around the axis of the fixed pin, even if a horizontal force is applied from either direction of the fixed pin axis, the elastic body on either side of the front and rear The horizontal force can be absorbed and a reaction force against the horizontal force can be applied to the sliding member by the elastic body from the other side.

In the fixing pin attaching / detaching device of the present invention, the expansion / contraction means connected to the sliding member via the connecting member is
It suffices that the expansion and contraction operation be transmitted to the sliding member via the connecting member so that the sliding member can slide back and forth along the axis of the fixed pin.

[0011]

In the fixing pin attaching / detaching device of the present invention, when the roof is subjected to the forced displacement with respect to the temporary pillar due to the action of seismic force or wind pressure, the sliding member supported by the elastic body is It is possible to limit the load that slides and that acts on the expansion and contraction means connected thereto to only the reaction force of the elastic body.

Further, when the fixing pin of the fixing pin attaching / detaching device of the present invention is detached from the pin hole or the like, the expanding / contracting means contracts or extends. The expansion and contraction movement of this expansion and contraction means
The sliding member is transmitted to the sliding member via the connecting member, the sliding member slides along the shaft of the fixed pin, and the expansion / contraction motion is transmitted to the shaft of the fixed pin via one of the front and rear elastic bodies. Due to the transmitted expansion / contraction motion, the fixing pin is pulled out from the pin hole or inserted into the pin hole.

[0013]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a lift-up construction method for a multi-story building which employs the fixing pin attaching / detaching device 1 of the present invention. In FIG. 1, the temporary support column 23 having a plurality of fixing pin holes 31 is provided with a two-stage support device including an upper-stage support device 34 and a lower-stage support device 35 below the upper-stage support device 34, 35. It is detachably fixed on the beam 37 that is erected between the girders 38 of each floor, and when the temporary support column 23 is relocated to the upper floor, it is folded so that it can pass between the beams. It is possible. Further, the temporary support column 23 supports the roof above it, and the roof beam 30 of the roof is supported by the lift-up jack 32, the guide devices 25 and 26, the lower pin operating mechanism 28 and the present invention via the support member 17. The fixing pin attaching / detaching device 1 (see FIGS. 2 and 3) is fixed.

FIG. 2 is a sectional view taken along the alternate long and short dashed line II-II in FIG. 1, and FIG. 3 is the alternate long and short dashed line III-III in FIG.
It is sectional drawing along. As shown in FIGS. 2 and 3, two fixing pins attaching / detaching device 1 of the present invention are fixed on a supporting member 17 provided around a rectangular temporary support column 23. The fixing pin attaching / detaching device 1 of FIG. 1 has fixing pin holes 21 formed on opposite sides of the temporary support column 23.
In addition, they are arranged on both sides of the temporary support column 23 so that the respective fixing pin tips 10a can be fitted and inserted.

Attaching / detaching device 1 for fixing pins arranged in this way
2 and 3, the fixing pin attaching / detaching device 1 is enlarged and shown in FIGS. 4 and 5, respectively. The fixing pin attaching / detaching device 1 according to the present invention includes a fixing pin 10 that is detachably inserted into a plurality of fixing pin holes 21 provided in a temporary support column 23, and sliding along a shaft 10d of the fixing pin. The shifter 11 as a member and the shaft 10d of the fixing pin
A front spring 12 and a rear spring 13 as elastic bodies provided separately before and after the shifter 11,
The piston device 14 is connected to the shifter 11 via a rotating member 15 as a connecting member, and serves as an expansion / contraction means for applying a reaction force to the roof.

The fixed pin 10 is a fixed pin body 10b.
A fixed pin tip 10a formed integrally with the fixed pin main body 10b so as to project therefrom and smaller than the external dimensions of the fixed pin main body 10b; and a front spring receiver fixed to the rear end of the fixed pin main body 10b. Member 10
c, a fixed pin shaft 10d fixed to the rear end of the fixed pin body 10b and extending in the coaxial direction of the fixed pin body, and a rear spring receiving member 10e fixed to the rear end of the fixed pin shaft 10d by a screw 10f. Consists of. Here, in the fixing pin 10, the fixing pin main body 10b is disposed by being inserted into the through hole 19 formed in the supporting member 17, while the front spring receiving member 10c is large so as not to be inserted into the through hole 19. Formed in external dimensions,
Alternatively, it is formed by providing a protrusion. Further, the front and rear spring receiving members 10c and 10e have recesses of such sizes and shapes that the front and rear springs can be fitted therein, and the fixed pin shaft 10 is arranged so that these recesses face each other.
It is arranged at both ends of d and has a hole through which the fixing pin shaft 10d can pass or be screwed in the central portion. Also, fixed pin shaft 1
The outer diameter of 0d may be smaller than the inner diameters of the front and rear springs 12 and 13.

Further, the shifter 11 is a fixed pin shaft 1
A shifter tube 11c that is formed to have an inner diameter larger than the outer diameter of 0c and slides directly on the fixed pin shaft 10c, and a center having a recess on both sides and a hole into which the shifter tube 11c is fitted and fixed. It is composed of a spring receiving member 11b and two shifter brackets 11a fixed to both sides of the outer periphery of the central spring receiving member 11b and having a hinge hole at the tip thereof. Here, a clearance is provided between the outer surface of the shifter pipe 11c and the inner surfaces of the recesses on both sides of the central spring receiving member 11b so that the front and rear springs 12 and 13 can be fitted therein. The recesses of the front and rear spring receiving members 10c and 10e are opposed to each other, and the front and rear springs 12 and 13 are disposed between them.
Is fitted. The size and shape of the recesses on both sides of the central spring receiving member 11b are formed so that the front and rear springs can be fitted, like the recesses of the front and rear spring receiving members 10c and 10e.

Further, the rotating member 15 has its upper end pivotally attached by the tip of the piston rod 14b and the upper end hinge 15a, sandwiching both sides of the central portion by the tips of the two brackets 18, pivotally attached by the central hinge 15b, and the lower end. Is formed into a bifurcated shape, and two shifter brackets 11a have a front end and a lower end hinge 1
It is pivoted by 5c. Where the bracket 18
Is fixed to a piston base 16 fixed on the bearing member 17.

Furthermore, as described above, the front spring 12 and the rear spring 13 are fitted between the recesses on both sides of the central spring receiving member 11b and the recesses of the front and rear spring receiving members 10c and 10e, respectively. .

Further, the piston device 14 includes a support member 17
It is composed of a cylinder 14a fixed to a piston base 16 provided on the above, and a piston rod 14b slidingly expanding and contracting on the cylinder 14a. The expansion and contraction direction of the piston rod 14b is the axial direction of the fixing pin 10. It is provided so as to be positioned vertically above and in parallel.

Next, a horizontal force P is applied to a structure or the like which employs the fixing pin attaching / detaching device 1 having the above-mentioned structure by seismic force or wind pressure.
The action of alleviating the horizontal force when P and P ′ act will be described with reference to FIG.

With the fixing pin 10 of the fixing pin attaching / detaching device 1 fitted in the fixing pin hole 21 of the temporary support column 23,
If the roof is forcibly changed by seismic force or wind pressure,
The fixed pin 10 cannot slide due to friction between the fixed pin 10 and the fixed pin hole 21.
4 and the rotating member 15 to the shifter 11.
However, since the shifter 11 is slidably supported by the front and rear springs 12 and 13, the forced displacement can be absorbed here. At this time, front and rear springs 1
Although a reaction force of 2, 13 is transmitted to the piston device 14, this reaction force can be limited to a smaller value by designing the spring constant of the spring to be appropriately small, and thus the load transmitted to the piston device 14 can be reduced. Can be made smaller.

Next, the fixing pin attaching / detaching operation of the fixing pin attaching / detaching device 1 having the above-mentioned configuration will be described.

4 and 5, a state in which the fixing pin 10 of the fixing pin attaching / detaching device 1 is fitted into the fixing pin hole 21 of the temporary support column 23 is shown. When the fixing pin 10 in this state is pulled out from the fixing pin hole 21, the piston rod 14b first contracts in the direction of the arrow X1. Due to the contracting movement of the piston rod 14b, the upper end of the rotating member 15 rotates about the central hinge 15b in the arrow X2 direction, and the lower end of the rotating member 15 pushes the shifter 11 in the arrow X3 direction. Then, the shifter 11 slides in the direction of arrow X4 along the fixed pin shaft 10d and presses the rear spring receiving member 10e through the rear spring 13 in the direction of arrow X4. Due to such a pressing force, the rear spring receiving member 10e moves in the direction of arrow X4 together with the fixing pin shaft 10d, and the fixing pin body 10b slides along the through hole 19 formed in the support member 17 to fix the fixing pin. The tip 10a is pulled out from the fixed pin hole 21 of the temporary support column 23.

On the contrary, the fixing pin 10 is attached to the temporary support column 2
When inserting into the fixing pin hole 21 of No. 3, the piston rod 14b first extends in the direction of the arrow Y1. The extension motion of the piston rod 14b causes the upper end of the rotating member 15 to rotate about the central hinge 15b in the direction of arrow Y2, and the lower end of the rotating member 15 pulls the shifter 11 in the direction of arrow Y3. Then, the shifter 11 slides in the direction of the arrow Y3 along the fixed pin shaft 10d, and the front spring receiving member 10c via the front spring 12.
Is pressed in the direction of arrow Y4. Due to such pressing force, the front spring receiving member 10c is fixed to the fixing pin body 1
0b together with the fixing pin body 1
0b slides along the through hole 19 to fix the tip 10a of the fixing pin.
Is inserted into the fixed pin hole 21 of the temporary support column 23.

In the construction of the multi-layer building to which the fixing pin attaching / detaching device 1 described above is applied, the upper and lower supporting devices 34, 35, Lift up jack 32,
In conjunction with the operations of the guide devices 25, 26 and the lower pin operating mechanism 28, the roof is lifted up and the temporary support columns 23 are refilled to the upper floors, and this is repeated.

[0028]

According to the fixing pin attaching / detaching device of the present invention, the expanding / contracting means is connected to the sliding member which slides along the axis of the fixing pin through the connecting member, and the elastic member is provided in front of and behind the sliding member. When a horizontal force is applied to the fixed pin, one of the front and rear elastic bodies absorbs the horizontal force and transmits it to the sliding member, while the other elastic body slides. Gives a reaction force against the pressing force from. Therefore, even if a horizontal force acts on the attachment / detachment device of the fixing pin, the horizontal force can be relaxed and prevented from being transmitted to the expansion / contraction means. However, the attachment / detachment device for the fixing pin can be reduced in weight and size.

Further, in the fixing pin attaching / detaching device of the present invention,
When the fixing pin is attached to or detached from the pin hole, when the expansion / contraction operation of the expansion / contraction means is transmitted to the sliding member via the connecting member, it is transmitted from the sliding member to the fixing pin via one of the front and rear elastic bodies. Thereby, the fixing pin can be attached to and detached from the pin hole.

[Brief description of drawings]

FIG. 1 is a front view showing a lift-up construction method for a multi-story building that employs the fixing pin attaching / detaching device of the present invention.

FIG. 2 is a cross-sectional view taken along the alternate long and short dash line II-II in FIG.

3 is a cross-sectional view taken along the alternate long and short dash line III-III in FIG.

FIG. 4 is an enlarged view of the fixing pin attaching / detaching device of FIG. 2;

FIG. 5 is an enlarged view of the fixing pin attaching / detaching device of FIG. 3;

[Explanation of symbols]

 1 Fixing Pin Attachment / Detachment Device 10 Fixing Pin 11 Shifter (Sliding Member) 12 Front Spring (Elastic Body) 13 Rear Spring (Elastic Body) 14 Piston Device (Expansion / Expansion Means) 15 Rotating Member (Coupling Member) 21 Fixing Pin Hole ( (Multiple holes provided in the temporary support)

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Teruo Shikata 2-5-8 Kita-Aoyama, Minato-ku, Tokyo Ma Incorporated

Claims (1)

[Claims] 1. A lift-up device used for lift-up construction for constructing a structure from a lower floor in order under the roof while lifting up a pre-constructed roof along the temporary post, wherein the temporary post is provided. And a sliding member that slides along the axis of the fixed pin, and elastic members that are separately provided before and after the sliding member along the axis of the fixed pin. A fixing pin attaching / detaching device comprising a body and an expansion / contraction means connected to the sliding member via a connecting member.