JPH06329396A - Mast assembling stand for raising and lowering mast device - Google Patents

Abstract

PURPOSE:To facilitate assembling of a mast by forming a prescribed assembling stand of a base plate, a side plate having a U-shaped cross section and a cylindrical box shape, and arranging a divided mast holding mechanism composed of grooves and a pin on the upper end of the box shape, arranging a pedestal in the side plate so as to be raised and lowered freely, and connecting a raising and lowering stand to raise and lower the pedestal and a mast to a winch by a separate rope. CONSTITUTION:A side plate 6 having a U-shape cross section is erected on a base plate 5, and a cylindrical box shape 7 is installed above it, and an assembling stand 4 is formed. A pedestal 3 is arranged in the side plate 6 so as to be raised and lowered freely, and a divided mast is raised through the box shape 7. A pair of grooves are formed on an upper surface of the box shape 7, and a pin 12 is inserted in a hole of the divided mast, and is locked in the grooves 12, and the divided mast is held. The pedestal 3 is connected to an assembling rope drum 2a of a winch 2 through a pulley 9, and the divided mast is raised and connected successively, and a mast is assembled. A raising and lowering stand is connected to a hanging-up rope drum 2b by a separate rope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mast assembly table for a lifting mast device, and is devised so that the lifting mast device can be easily assembled.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional lifting mast device. In this mast device, one mast 8 is constructed by joining one upper mast 8a and a plurality of intermediate masts 8b by fitting and adding them together. The lower end of the mast 8 is fitted into the receiving portion 23a of the winch base 23, and the mast 8 is supported by the building 25 at an appropriate position. A pulley 24 is provided at the top of the upper mast 8a, a rope 15 fed from a winch 22 is wound around the pulley 24, and the tip of the rope 15 is connected to a lift 21.

When the winch 22 is driven and the rope 15 is paid out, the lifting platform 21 descends along the mast 8 and the rope 15
The elevator base 21 rises along the mast 8 when the roll is caught. By putting the luggage on the elevator table 21 that moves up and down in this way, the luggage can be transported to each floor of the building 25.

One of the upper mast 8a and each intermediate mast 8b
The length of each book is such that one operator can easily carry and handle it.

In order to construct the mast 8, first, the plurality of intermediate masts 8b are connected by fitting in a horizontal state on the ground, and the plurality of combined intermediate masts 8b are vertically raised to receive the winch base 23. 23a. Next, the remaining intermediate masts 8b are lifted by a crane installed on the roof of the building 25, and the fitting and coupling are sequentially performed from the above. Finally, the upper mast 8a is lifted and fitted on the uppermost intermediate mast 8b. They are joined and joined, or a scaffold is assembled to perform work for fitting and joining the remaining intermediate mast 8b and upper mast 8a.

[0006]

By the way, in the above-mentioned prior art, a crane and a scaffold must be installed to assemble the mast of the lifting mast device, so that much labor and cost are required for assembling the mast. It also takes a lot of time to remove it.

In view of the above-mentioned prior art, it is an object of the present invention to provide a mast assembly stand of a lifting mast device which facilitates mast assembly.

[0008]

A structure of the present invention for solving the above-mentioned problems is a mast assembly table for assembling a lifting mast device in which a lifting table is moved up and down along a mast formed by adding a plurality of split masts, A box shape that is erected on the base plate and is fixed to the base plate and has a U-shaped cross section and a cylindrical shape that is provided on the side plate and that allows the divided mast to pass while guiding. And the pedestal placed in the side plate of the assembly pedestal, the pair of grooves formed on the box-shaped upper surface of the assembly pedestal, the hole formed in the split mast, and this hole It is provided on the base plate and a split mast holding mechanism that is inserted into the box and hung on the upper surface of the box and locked in the groove, and the base is lifted by winding and unwinding the rope. In addition to letting in and winding another rope Wherein the winch lifting more lifting platform, in that it has configuration.

[0009]

Operation: The split mast is placed on the pedestal, the pedestal is raised by the winch, and the raised split mast is temporarily locked to the box shape of the assembly table by the pin. The pedestal is lowered, the next split mast is also fitted to the lifted split mast in the same manner, and the next split mast is also temporarily locked in a box shape by pins. This operation is repeated to build the mast. The lifting platform is operated by the same winch winding / unwinding operation.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a mast assembly table according to an embodiment, FIG. 2 is a perspective view showing a rear surface of the mast assembly table, and FIG. 3 is an explanatory view showing a procedure for assembling the mast.

As shown in FIGS. 1 and 2, the mast assembly table 1 mainly comprises a winch 2, a pedestal 3, an assembly table 4 and a base plate 5.

The winch 2 and the assembly base 4 are fixed to a base plate 5. The winch 2 has an assembling rope drum 2a, a hoisting rope drum 2b, and a clutch 2c, and the drums 2a and 2b can be independently driven to rotate by operating the clutch 2c. The assembly table 4 is composed of a side plate 6 having a concave cross section and a box 7 formed on the side plate 6. The height of the side plate 6 is 1 of the intermediate mast 8b.
The height is somewhat higher than the height of the main body, and a space is formed inside the box shape 7 through which the mast 8 can be guided and passed.

A pulley 9 is provided on one surface of the box shape 7,
A rope stopper 10 is provided on the opposite surface. Further, a groove 11 is formed in the upper portion of the box shape 7, and as will be described later, by inserting the pin 12 into a hole formed in the lower portion of the upper mast 8a or the intermediate mast 8b and receiving the pin 12 in the groove 11, midway of assembling. I am trying to support my mast.

The pedestal 3 moves up and down in a space surrounded by the side plate 6, and has pulleys 13a and 13b on its lower surface.

The assembling rope 14 pulled out from the assembling rope drum 2a of the winch 2 includes pulleys 9 and 13
One end is fixed by a rope stopper 10 via a and 13b. Therefore, when the rope 14 is wound up by the drum 2a of the winch 2, the pedestal 3 moves up, and when the rope 14 is paid out, the pedestal 3 moves down. Further, the lifting rope 15 pulled out from the lifting rope drum 2b is shown in FIG.
As shown in, a pulley 24 provided on the top of the upper mast 8a
One end is fixed to the lift table 21 via the. Therefore, after the mast 8 is constructed, the drum 2b of the winch 2 is
When the rope 15 is wound up by the
When the rope 15 is unrolled, the lifting platform 21 descends.

A pin hole for passing the pin 12 is formed in the lower portion of the upper mast 8a and the intermediate mast 8b.

Next, the operation of the mast assembly table 1 and the procedure for constructing the mast 8 will be described with reference to FIGS. 3 (a), 3 (b), 3 (c) and 3 (d).

First, as shown in FIG. 3A, the upper mast 8a is inserted from the upper part of the mast assembly base 1 and placed on the pedestal 3. Then, the rope 14 is wound up by the winch 2 to raise the pedestal 3 and raise the upper mast 8a.

As shown in FIG. 3B, the upper mast 8a
When is raised to the upper end, insert the pin 12 into the pin hole provided in the upper mast 8a in advance, and insert the pin 1 into the groove 11 provided in the box shape 7.
2 is locked and the upper mast 8a is held.

As shown in FIG. 3 (c), the winch 2 loosens the rope 14 to lower the pedestal 3 to the lowest position, and the intermediate mast 8
b on the pedestal 3, the rope 14 is wound up again by the winch 2, the intermediate mast 8b on the pedestal 3 is raised and brought into contact with the upper mast 8a, and the upper and lower masts are fitted and joined in the same manner as in the conventional case. Remove the pin 12.

As shown in FIG. 3 (d), the winch 2 winds up the rope 14 to raise the pedestal 3 and holds the intermediate mast 8b by the pin 12 at the uppermost position.

By repeating the operation shown in FIGS. 3 (c) and 3 (d), the intermediate mast 8b is successively added to reach a predetermined height. After reaching the predetermined height, the upper and lower masts are joined together in the state of FIG. 3 (c), the pin 12 is removed, the pedestal 3 is lowered to the lowest position, and the entire mast is held by the base plate 5.

After the mast 8 is constructed, the cracks 2c of the winch 2 are switched to drive the hoisting rope drum 2b to wind up and hoist the hoisting rope 15 to move the hoisting table 21 up and down.

An air cylinder can be used as a drive source for moving the pedestal 3 up and down to assemble the mast.
When the air cylinder is used for mast assembly, it can be detachable so that it can be shared with other assembly bases.

[0026]

According to the present invention as described in detail with the above embodiments, the following effects can be obtained. (1) The pedestal in the assembly stand is operated by the assembly rope and winch to move up and down, and the split mast is assembled in sequence from the bottom by combining with the pins on the top of the assembly stand, so the conventional assembly crane and scaffolding are not required. Therefore, the lifting mast device can be easily assembled. It can also be assembled in tight spaces. (2) By switching between the assembling rope drum and the hoisting rope drum, the winch can be used for both assembly and lift. (3) The assembling table can also be used as a holding table for the mast after assembling. (4) Due to the above, significant cost savings and improved work efficiency can be expected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mast assembly table according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an upper portion of a mast assembly table.

FIG. 3 is an explanatory view showing a procedure for assembling the mast.

FIG. 4 is a perspective view showing a conventional lifting mast device.

[Explanation of symbols]

 1 Mast Assembly Table 2 Winch 2a Assembly Rope Drum 2b Lifting Rope Drum 2c Clutch 3 Base 4 Assembly Platform 5 Platform 6 Side Plate 7 Box 8 Mast 8a Upper Mast 8b Intermediate Mast 9 Pulley 10 Rope Stopper 11 Groove 12 Pin 13a, 13b Pulley 14 Assembly rope 15 Lifting roll 21 Lifting platform 22 Winch 23 Winch platform 23a Receiving part 24 Pulley 25 Building

Claims (1)

[Claims] 1. A mast assembly table for assembling a lifting mast device in which a lifting table is moved up and down along a mast formed by adding a plurality of split masts, the mast assembly table being erected on the bed plate and fixed to the bed plate. In addition, a side plate having a U-shaped cross section, and an assembly stand formed on the side plate and having a box shape that is tubular and allows the split mast to pass while being guided, and a side plate of the assembly stand. A pedestal that can be moved up and down, a pair of grooves formed on the box-shaped upper surface of the assembly stand, a hole formed on the split mast, and a groove that is inserted into this hole and bridged over the box-shaped upper surface. It is provided on the base plate with a split mast holding mechanism consisting of a pin that is locked to, and the pedestal is raised and lowered by winding and unwinding a rope, and lifted and lowered by winding and unwinding another rope. It consists of a winch that raises and lowers the platform. Mast assembly platform of lifting mast and wherein the door.