JPS6118296Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a duct hoisting device that allows a large amount of ducts to be hoisted into a ceiling beam safely and quickly.

When installing a large number of ducts within ceiling beams in large-space factories, etc., construction methods such as those shown in Figs. 1 to 3 have conventionally been implemented. That is, ceiling beam 1
The duct 3 is fixed to the fixing hardware 2. For this installation, a hanging scaffold 4 is temporarily set up as shown in Figure 3, and the craftsman uses this scaffold to perform fixed connection work and insulation wrapping work within the ceiling beam, and also to lift the duct. , the winch 5 was relocated to each lifting point of the short duct 6 for lifting. According to such conventional construction methods, the work of attaching the duct fixing hardware 2 to the beam 1 and the fixed connection work of the duct 3 are dangerous and require temporary scaffolding, resulting in poor workability and high construction costs. . In addition, since the work point moves sequentially along the planned duct route, other work and line work are adversely affected. Furthermore, when lifting the short duct with the winch 5, the heat insulation layer is damaged, so the heat insulation wrapping of the duct must be carried out at a high place using the temporary scaffolding 4 after the duct is lifted.

The present invention has devised a new duct lifting device that can eliminate most of the troublesome problems of the conventional duct construction method. A rail 7 installed along the ceiling beam and this rail 7
a roller 10 slidably attached to the duct, and a duct suspension band 1 connected to the roller 10.
3, a lifting machine 12 installed on the floor below the rail 7, and a short duct 6 at the lifting position of the short duct 6 lifted by the lifting machine 12.
It has a pulley 14 fixed within the length range or on the side of the road where the suspended short duct 6 is scheduled to be lifted, a winch 15 for sending out the suspended short duct 6 along the rail 7, and a hook 17 at the tip thereof. and a wire 16 wound through the pulley 14 by the winch 15.

When using this device, first, the rail 7 is installed in advance within the ceiling beam along the planned route for hanging the duct. It is convenient to attach this rail 7 when constructing the steel frame. The rail 7 can be a light-load auto door rail, for example, lengths of 5 m can be successively connected in a plug-in manner and fixed to the upper beam 8 with an e-beam 9. A roller 10 is made to slide on this rail 7.

The duct 3 is suspended using the rail 7 and the rollers 10, but for the purpose of lifting the short duct 6 and the worker 11, a machine is placed on the floor below the rail 7. For example, a Parker lift 12 is installed. This parka lift 12
The installation point of the short duct 6 becomes the base point for the lifting work of the short duct 6, and the lifting and lowering of the workers and the scaffolding are also carried out by this Parker lift 12, and there is no need to move elsewhere.
This is essentially a fixed-point lifting operation. First, the first short duct is lifted by the Parker lift 12, and then suspended from the roller 10 via the suspension band 13. Next, this suspended short duct is suspended by the length of the subsequent short duct.
send out. After that, connect the following short duct 6 to the empty rail section after sending it out using the parker lift 1.
2, the duct is suspended in the same way, the flange is joined to the rear end of the duct that has already been suspended, and the process of sending out a certain distance again is repeated. To send out (convey) this fixed distance (corresponding to the length of the following short duct),
As shown in FIG. 5, a pulley 14 is placed within the length of the short duct 6 at the lifting position of the short duct 6 to be lifted by the lifting machine 12 (or closer to the planned lifting road). Installation can be easily carried out by winding up the winch 15, by hooking the wire 16 from the winch (for example winched sheave) 15 through the pulley 14 to the end of the duct with the hook 17.

As described above, according to the device of the present invention, a rail is installed in advance above the planned route for lifting the duct, a machine for lifting the short duct and the worker is installed on the floor below the rail, and the lifting a step of suspending the short duct onto the rail by a machine so as to be transportable;
The suspended short duct is sent out a certain distance, and the subsequent short duct is suspended onto the empty rail section by the lifting machine, and connected to the already suspended duct for a certain distance. By sequentially repeating the process of sending out only
Since the duct can be installed over a long distance within the ceiling beam from one base point, the following advantages can be enjoyed compared to conventional construction methods. (1) Since the work is done at a fixed point, it does not adversely affect other work. (2) Most of the insulation wrapping work can be done on the ground. (3) Installation of the duct support 2 and temporary scaffolding are completely unnecessary. (Four)
The work is safe and quick, and the labor required for lifting is reduced from 11 people/100m of duct to 7.5 people/100m of duct.
(man-hour ratio 1:0.68). (5) After the lifting work is completed, the rail becomes a support member that receives the load of the duct, and it doubles as a rail and support member, and can be used for fixed-point work during duct dismantling work.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of the conventional duct installation method, Figure 2 is the first side view, Figure 3 is a front view showing the construction state of the method shown in Figures 1 and 2, and Figure 4 is the front view showing an example of the conventional duct installation method. FIG. 5 is a front view showing the state in which the duct is suspended by the device of the present invention, and FIG. 5 is a front view showing the state of construction by the device of the present invention. 1...Beam, 3...Duct, 6...Short duct, 7
...Rail, 8...Upper beam, 10...Roller, 1
2... Lifting machine (Parker lift), 13... Hanging band.

Claims (1)

[Scope of utility model registration request] A rail 7 installed in a ceiling beam along the planned duct suspension route, a roller 10 slidably attached to the rail 7, a duct suspension band 13 connected to the roller 10, and a duct suspension band 13 connected to the roller 10. A lifting machine 12 installed on the lower floor surface of 7 and a lifting position within or beyond the length of the short duct 6 at the lifting position of the short duct 6 lifted by the lifting machine 12. A pulley 14 fixed on the planned road side and a suspended short duct 6 are connected to a rail 7
a wire 16 having a hook 17 at its tip and being wound up by the winch 15 via the pulley 14;
A duct lifting device for fixed point lifting work consisting of: