JP3923185B2 - Single-point suspension method and equipment for lifting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method for lifting and fixing a heavy equipment to be used suspended from a ceiling portion of a building to the ceiling portion, and a lifting tool used in the construction method.
[0002]
[Prior art]
Some devices such as a fan coil unit that forms an air blowing unit of an air conditioner installed in a building have a weight of about 100 kg. As shown in Japanese Patent No. 127498, the equipment is pushed up to the ceiling by a hoisting vehicle, and the worker takes a means to fix the four places of the equipment on the ceiling on a liftable lifting work vehicle. Yes. When this means is used, at least two aerial work platforms and a lift truck are used, so that a wide floor surface must be secured, and it is necessary to accurately lift the equipment to the mounting position by the lift truck. For this reason, it is common for at least two workers to cooperate.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to enable a ceiling-mounted device to be mounted on a ceiling without using a heavy truck and even by one worker.
[0004]
[Means for Solving the Problems]
One of the means for solving the above-mentioned problems is as described in claim 1, the step of fixing the ceiling bracket with the hanging hook directly or indirectly to the lower surface of the concrete frame of the building, and the support A frame body having a slide mechanism with a column is attached to the upper surface of the ceiling suspension device by grounding to form a ceiling suspension unit, and the ceiling suspension unit is pulled by a lifting operation tool supported by the suspension hook. And a step of connecting the support column to the ceiling bracket, and a step of adjusting a horizontal position of the ceiling suspension unit by the slide mechanism and fixing the slide mechanism to the frame. To do.
[0005]
According to this means, after fixing the ceiling bracket to the concrete frame and lifting the ceiling suspension unit with the lifting operation tool, the support column is fixed to the ceiling bracket and the horizontal position of the ceiling suspension unit is adjusted to adjust the frame. The work is completed by fixing the body and backing plate.
[0006]
According to another aspect of the present invention, as described in claim 2, the step of fixing the ceiling bracket with the hanging hook to the lower surface of the concrete frame of the building, and the support column on the bracket that can be engaged with the inner edge of the frame. A step of temporarily attaching the bracket and the frame body to the upper surface of the suspension device to form a ceiling suspension unit; and a step of attaching the ceiling with a wire supported by the suspension hook. The step of pulling up the suspension unit, the step of moving the support column upward with respect to the bracket, and fixing the upper part of the support column to the ceiling bracket, and adjusting the horizontal position of the ceiling suspension unit with respect to the bracket. And fixing both parts.
[0007]
According to each of these means, after fixing the ceiling mount to the concrete frame and lifting the ceiling suspension unit with a wire, the support column is fixed to the ceiling mount, and the vertical suspension and horizontal direction of the ceiling suspension unit with respect to the support column are fixed. If the position is adjusted and fixed, the installation work is completed.
[0008]
Further, the frame used as a lifting tool in the above construction method is a frame that connects the ceiling-suspended device to the lower part thereof as described in claim 4, and the frame is directed downward at the center thereof. A slide mechanism comprising a pair of locking claws provided and a receiving plate having a pair of standing pieces slidably engaged with the locking claws; and a support column attached to the receiving plate; and It is characterized in that a part capable of locking the pulling temporary suspension block is provided at any position. By using this instrument, it is possible to simplify the lifting and positioning of the ceiling suspension device.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a floor slab on the upper floor of a building, 2 is a ceiling metal fitting welded to a reinforcing bar in the floor slab, 3 is a fan coil unit serving as an air outlet of an air conditioner, and 4 is lifting The frame body 4 and the fan coil unit 3 are integrally coupled by an appropriate fixing means 5 such as a screw. A support column 6 is disposed at the center position of the frame body 4, and the support column 6 can be engaged with the frame body 4 via a slide mechanism (not shown) and pulled up by a short distance. The position can be adjusted in the horizontal direction, and is fixed at a fixed position after positioning.
[0010]
The fan coil unit 3, the frame body 4, the support column 6, etc. constitute a ceiling suspension unit 7 by the coupling by the fixing means 5, and the ceiling suspension unit 7 is pulled up by means described later, The support column 6 is engaged, and is further supported by four auxiliary wires 8 a suspended from hooks 8 provided on the ceiling slab 1. In the figure, 9 is a suspension hook provided integrally with the ceiling suspension fitting 2, and when the ceiling suspension unit 7 is pulled up with a wire, it becomes a support for the wire. In addition, on the side surface below the suspension hook 9 of the ceiling suspension fitting 2, an appropriate number of recesses into which a set screw 6e described later of the support column 6 enters is provided in the vertical direction.
[0011]
FIG. 2 is a perspective view in which the respective parts of FIG. 1 are separated, and the fan coil unit 3 is fixed with four ear pieces 10 with elongated holes to which the lower ends of the auxiliary wires 8a are connected, The slide mechanism is indicated by reference numeral 11.
[0012]
FIG. 3 is an exploded perspective view of the frame body 4. The frame body 4 has a pair of box bodies 4a and side plates 4b, and the box bodies 4a and 4a are spaced apart from each other to form a pair of side plates 4b and 4b. Are combined into a quadrangle, and a space is formed inside. And the latching claw 12 which bend | folds at the upper end and bends downward is connected with the inner peripheral wall of box 4a, 4a. Reference numeral 13 denotes a receiving plate. As apparent from FIG. 4, a pair of standing pieces 13b are bent upward on both sides of the flat plate portion 13a, and a hole 13c is formed in the center of the flat plate portion 13a. The threaded portion 6a at the lower end of the column 6 is inserted and locked. Then, the slide mechanism 11 is constituted by the side wall of the box body 4a including the receiving plate 13 and the locking claw 12, and the receiving plate 13 can slide in the arrow direction of FIG. 3 with respect to the box body 4a. After the position adjustment, it is fixed to the box side wall with a push screw 13d.
[0013]
The threaded portion 6a of the support column 6 is formed to be considerably longer than the thickness of the flat plate portion 13a. The lock nut 6b is screwed upward, and the lower end is inserted into the hole 13c, and then the iron socket 6c is fixed to the lower end. A nut may be screwed in place of the iron socket 6c. The upper portion of the support column 6 is a hollow portion 6d, and a set screw 6e is screwed near the upper end.
[0014]
Prior to pulling up, the fan coil unit 3 is placed on a floor surface or a transport vehicle with the ear piece 10 side as an upper surface, and a receiving plate 13 and a frame body 4 are placed on the floor, or are integrally assembled by a fixing means 5. Thus, the ceiling suspension unit 7 is formed. At that time, the support column 6 is assembled to the receiving plate 13, but the lock nut 6 b has been moved to the upper loosened position, and the support column 6 has the lock nut 6 b that is a flat plate of the receiving plate 13. The support column 6 is lowered until it hits the portion 13 a or until the lower end of the support column 6 hits the fan coil unit 3.
[0015]
FIG. 5 shows a means for pulling up the ceiling suspension unit 7, and a pair of temporary suspension blocks 15, 15 are immovably locked at appropriate positions on the frame 4 near the ends of the locking claws 12, 12 on both sides. The wire 16 and the ring 17 are connected to this.
[0016]
Reference numeral 18 denotes a lifting operation tool. The lifting operation tool 18 has a wire 18b inserted into a guide pipe 18a whose tip is bent downward, and a hook 18c is fixed to the tip of the wire 18b. The end is wound around an electric reel 18d attached to the lower part of the pipe 18a. The curved portion at the tip of the guide pipe 18a is locked to the suspension hook 9, and the lower end of the guide pipe 18 is locked so as not to move to a heavy object such as a material transporting vehicle. When the reel 18d is operated, the ceiling suspension unit 7 can be raised to an arbitrary position.
[0017]
When the upper end of the support column 6 reaches near the lower end of the ceiling bracket 2, the electric reel 18 d is stopped, and the worker rides on the high place work table 20 and performs the fixing work as shown in FIG. 6. In this fixing operation, the support column 6 is lifted up slightly from the frame 4 and the hollow portion 6d is fitted to the ceiling mount 2, and the lower end iron socket 6c is pushed up until the flat plate portion 13a comes close, When fitted to an appropriate depth, the upper set screw 6e is driven to engage with one of the recesses on the side surface of the ceiling bracket 2. Since the flat plate portion 13a is seated on the iron socket in this state, the receiving plate 13 is fixed to the support column 6 when the lock nut 6b is tightened and pressed against the upper surface of the flat plate portion 13a. It will be fixed. After the lock nut 6b is tightened, the position of the ceiling suspension unit 7 is adjusted while shifting the locking claw 12 and the insertion piece 13b in the longitudinal direction, and the wire 18a is loosened at a fixed position so that the weight of the ceiling suspension unit 7 is applied to the receiving plate 13. When the hook 13d is tightened and the lock nut 6b is further tightened, the ceiling suspension unit 7 is mounted in a fixed position, and the auxiliary wire 8a hung from the floor slab 1 on the ear pieces 10 at the four corners of the fan coil unit 3. Are connected to determine the position of the fan coil unit 3.
[0018]
The above-described embodiment can be partially modified as follows in several respects. FIG. 8 uses an H-shaped receiving plate 21 instead of the U-shaped receiving plate 13, and uses a lock nut 6b and a receiving nut 6f up and down to fix the flat plate portion 21a to the screw portion 6a. ing.
[0019]
In FIG. 9, instead of the support column 6 having a hollow portion, a support column 22 having a bar shape at the top is used, and a joint pipe 23 is used to indirectly connect the support column 22 to the ceiling bracket 2. ing. The joint pipe 23 has a suspension hook 9 on the side, and is provided with set screws 6e and 24 on the upper and lower sides thereof. After the joint pipe 23 is fixed to the ceiling hanger 2 with the set screw 6e, the suspension hook 9 is used. The ceiling suspension unit 7 is pulled up, and the support column 22 is inserted into the joint pipe 23 and fixed with the set screw 24.
[0020]
FIG. 10 also shows the side where the support column 22 is indirectly connected to the ceiling hanger 2. The lower part of the joint pipe 23 is a half pipe part 23a extending in the longitudinal direction, and a half pipe lid 23b is attached to this by a hinge 23c. A lid set screw 23d is provided on the free end side of the semi-tube lid 23b. Then, the upper portion of the support column 22 is sandwiched between the half tube portion 23 a and the half tube lid 23 b and fixed with a set screw 24. According to this structure, it is not necessary to insert the support column 22 into the tubular body in the longitudinal direction, and it can be fixed at an appropriate height. Therefore, it is not necessary to make the position of the receiving plate 13 adjustable with respect to the support column 22, and a structure in which the receiving plate 13 is fixed to the support column from the beginning can be used.
[0021]
Next, FIG. 11 further facilitates the coupling of the support column 22 to the ceiling bracket 2, and a bracket 25 in which a plurality of saw-tooth hanging claws 25 a are arranged in the vertical direction on the side surface of the ceiling bracket 2. Is attached to the upper end of the support column 22, and a suspension frame 26 formed with a downward U-shaped edge is continuously provided. As shown in FIG. 11 (b), the hanging frame 26 is hung on one of the hanging claws 25 a, the wire 18 a is loosened to suspend the support column 22, and the support column 22 is attached to the ceiling hanging bracket 2 with a squeezing band 27. Fix it.
[0022]
In the case of lifting a lightweight ceiling suspension unit as the lifting operation tool, the wire 18b can be used alone, and the lower end of the wire 18b is hung directly on the suspension hook 9 and fixed. It may be.
[0023]
【The invention's effect】
As is clear from the above description, according to the construction method of the present invention, a ceiling bracket for fixing equipment to the ceiling is provided, a suspension hook is provided using the bracket, and a lifting operation tool is provided on the suspension hook. Since the ceiling suspension unit is lifted by a single point suspension, even a single worker can lift using simple means such as an electric reel without using an aerial work vehicle. Then, after connecting the support column provided on the ceiling suspension unit to the ceiling mount, the position of the ceiling suspension unit is adjusted by a slide mechanism provided between the support column and the frame on the top surface of the ceiling suspension unit, and the slide mechanism It is only necessary to release the lifting operation tool by fixing the bolt, so that compared with the conventional method of hanging four points using bolts and nuts, the fine adjustment of the mounting position is easy and the fixing means is simple. There is an advantage that even a worker can complete the work in a short time.
[0024]
In addition, the lifting tool according to claim 4 has an advantage that it is possible to easily perform the operations of lifting, positioning and fixing the ceiling-suspended device in the one-point suspension method.
[Brief description of the drawings]
1 is a front view showing a state after being suspended from a ceiling. FIG. 2 is an exploded perspective view of main parts. FIG. 3 is an exploded perspective view of a frame. FIG. 4 is a longitudinal sectional view of a slide mechanism. Perspective view [Fig. 6] Front view of positioning operation [Fig. 7] Longitudinal sectional view upon completion of positioning [Fig. 8] Longitudinal sectional view showing another example of slide mechanism [Fig. 9] Other examples of support column connection FIG. 10 is a longitudinal sectional view showing still another example of the support column connection. FIG. 11 is a longitudinal sectional view showing another example of the support column connection.
DESCRIPTION OF SYMBOLS 1 Floor slab 2 Mounting bracket 3 Fan coil unit 4 Frame body 5 Fixing means 6,22 Support column 6b Lock nut 6c Iron socket 7 Ceiling unit 8a Auxiliary hanging wire 9 Hanging hook 10 Ear piece 11 Slide mechanism 12 Locking claw 13 Receptacle 13b Standing piece 18 Lifting operation tool 23 Joint pipe

Claims (4)

Fixing the ceiling bracket with the hanging hook directly or indirectly to the lower surface of the concrete frame of the building;
Attaching a frame body having a slide mechanism with a support column to the upper surface of the ceiling suspension device by grounding to form a ceiling suspension unit;
A step of lifting the ceiling suspension unit with a lifting operation tool supported by the suspension hook;
Connecting the support column to a ceiling bracket;
A single-point suspension method for a ceiling suspension device, comprising: adjusting the horizontal position of the ceiling suspension unit with the slide mechanism and fixing the slide mechanism to the frame. Fixing the ceiling bracket with the hanging hook to the lower surface of the concrete frame of the building; temporarily fixing the support column to the bracket that can be engaged with the inner edge of the frame; and
A step of assembling the support bracket and the frame body on the upper surface of the ceiling device by ground assembly to form a ceiling unit;
Pulling up the ceiling unit with a wire supported by the hanging hook;
Moving the support column up with respect to the bracket, and fixing the upper part to the ceiling hardware;
A single-point suspension method for a ceiling suspension device, comprising: a step of fixing both parts by adjusting a horizontal position of the ceiling suspension unit with respect to the bracket. 2. The slide mechanism according to claim 1, wherein a load plate is supported by a support column, and a receiving plate having a pair of upright pieces, a locking claw provided inside the frame body and slidably engaged with the upright pieces. A single-point suspension method for a ceiling-suspended device, characterized in that the two horizontal sections are fixed by adjusting the relative horizontal positions of the two sections along the standing piece and the locking claw. A frame that connects the ceiling-suspended device to the lower part of the frame. The frame includes a pair of locking claws provided downward in the center and a pair of standing pieces that are slidably engaged with the locking claws. A slide mechanism comprising a receiving plate and a support column attached to the receiving plate, and a portion capable of locking a lifting suspension block at any position is provided. , Lifting equipment.

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