JPH0932351A - Pole for erecting column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and easily carry out work for erecting and removing a joint type simple column by worker oneself and to facilitate the conveyance thereof to a construction field. SOLUTION: A pole for erecting a column is constituted of a lower pole 5 and an upper pole 6, and the pole is equipped with a pole main body 1 provided so as to make it possible to raise and lower the upper pole 6, fixed bands 2 fixing the pole main body 1 to the lower end side of a lower column, an upper column fitting guide 3, and a hanging up device 4 fastening one end of a rope 23 built between a fixed pulley 21 mounted to the upper end of the upper pole 6 and a moving pulley 22 and pulling the moving pulley 22 upward by pulling the other end on the ground. One end of the rope 12 fastening the other end to the side near to the upper end of the upper pole 6 and passing through the inside of the lower pole 5 is led to the outside from the side opposed to a fastened section of the lower pole, the rope in the lower pole 5 is made to pass through the pulley provided to the lower end of the upper pole, and the upper pole 6 can be raised and lowered by operating the end 12b of the rope to be led to the outside of the lower pole 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pole for a building column used for constructing a joint type simple column used as a simple lead-in column for electric wires or a column for crime prevention light at a construction site.

[0002]

2. Description of the Related Art At a construction site, as a simple pillar for simply pulling in an electric wire or simply installing a crime prevention light, a joint-type pillar for connecting an upper pillar and a lower pillar on site is to be built. There are many.

Conventionally, in order to build a joint type pillar without using a construction machine such as a small crane, a ladder is leaned against a lower pillar having a lower end embedded in advance, and one end is fastened to the upper end of the upper pillar. A worker raised the other end from above the ladder, and the lower end of the upper pillar was fitted to the upper end of the lower pillar to build the pillar.

[0004]

In the above-mentioned conventional method, for example, when a pillar having a total length of 6 m is to be built, an operator must climb a ladder and work at a height of about 3 to 4 m from the ground. Since it does not happen, it is dangerous, and it takes a considerable force to pull up the upper pillar from the top of the ladder, and the labor burden on the worker is large.

Further, the simple pillars used for temporary installation of electric wires and crime prevention lights must be removed after the building is completed, but conventionally, a ladder is erected on the pillar and the upper pillar is pulled up as in the case of a building pillar. The lower pillar is removed from the lower pillar, and the lower pillar must be pulled out by the worker while holding the pillar, and the risk and labor are the same as when building a pillar. In particular, the lower the pillar is, the longer the installation period of the pillar becomes, the more difficult it is to pull out due to the ground pressure from the surroundings, and the labor load on the worker is large, and the pulling out work is done with the worker bent down. It is also a cause of backache and other problems.

An object of the present invention is to enable a safe and easy construction pillar when constructing a joint type simple pillar such as a simple lead-in pillar for electric wires at a construction site or the like.

[0007]

In order to achieve the above object, a pole for a building column of the present invention has a lower pole made of a hollow pipe having an open upper end and an outer diameter slightly smaller than an inner diameter of the lower pole. And a lower pole side is composed of an upper pole inserted into the lower pole, and the upper pole is provided so that the upper pole can move up and down from the upper opening of the lower pole,
A fixing band that fixes the pole body to a lower pillar that is erected in the ground at the lower end side, and a lower portion of the upper pillar that is attached to the upper end portion of the lower pole of the pole body and is connected to the upper end portion of the lower pillar. A guide for fitting an upper column of a tapered cylindrical shape whose upper portion expands to guide the fitting to the column, a fixed pulley attached to the upper end of the upper pole, and the upper end side of the column to be lifted The lower pole is equipped with hoisting means that fastens the movable pulley to the upper side by fixing one end of the rope suspended between the movable pulley and the fixed pulley to the fixed pulley and pulling the other end on the ground. One end is fastened to the side surface near the upper end of the lower pole, and the other end of the rope that passes through the inside of the lower pole is led out to the outside from the side surface of the lower pole opposite to the fastening portion, and the rope in the lower pole is moved to the upper side. Guide it to the outside of the lower pole by passing it through the pulley installed at the bottom of the pole. Kenbashira pole for formed by providing the upper pole to be movable up and down by operating the end of the rope that is.

[0008]

EXAMPLES Specific examples of the present invention will now be described in detail with reference to FIGS. The pole for a building pole according to the present invention includes an extendable pole body 1, fixing bands 2 and 2 for fastening to a lower column of a column on which the pole body is to be built, and an upper column attached to the pole body above the fixing band. Mating guide 3
And a hoisting means for hoisting the upper pillar.

The pole body 1 comprises a lower pole 5 made of a hollow pipe and an upper pole 6 having an outer diameter slightly smaller than the inner diameter of the lower pole, and a stepped tubular guide sleeve attached to the upper end of the lower pole. The upper pole is guided by 7 so that it can be raised and lowered from the upper end of the lower pole 5. The lower pole 5 is formed of a hollow pipe so that the upper pole 6 can be housed therein, but the upper pole may be a hollow pipe or a solid bar.

As shown in FIG. 2, a large diameter portion 7a of the guide sleeve 7 is screwed to the upper end of the lower pole 5, and the outer surface of the upper pole 6 is slidably contacted with the inner surface of the small diameter portion 7b.

The upper pole 6 can be raised and lowered by the structure shown in FIG. At the lower end of the upper pole 6, a pulley 8 having a wheel diameter slightly larger than the outer diameter of the upper pole.
A fixed pulley 10 is provided in a window 9 opened on the side surface of the lower pole 5 near the upper end.

The lower pole 5 on the side opposite to the fixed pulley 10
A hole 11 is formed in the side surface, and one end of a rope 12 for lifting and lowering an upper pole is passed through the hole from inside the pole, and a knot is formed outside the pole to form a fixed end 12a. Line 12
Uses a rope that is rich in flexibility and tensile strength, for example, made by twisting synthetic resin fibers. The cord 12 is led out to the outside of the lower pole by passing through the pulley 8 and the fixed pulley 10 at the lower end of the upper pole in order.

When the free end 12b of the rope 12 is pulled, the upper pole 6 is pulled up via the pulley 8, and when the rope is loosened, the upper pole 6 descends in the lower pole by its own weight to move the rope 12 up. It is designed to be pulled into the lower pole,
When it is desired to fix the upper pole in a stretched state, the free end 12b of the cord is entwined with the fixed band 2 and stopped.

A part of the wheels of the fixed pulley 10 projects into the lower pole 5 so that the rope 12 does not come into contact with the lower edge of the window 9 and is damaged.
The stationary pulley 10 is provided with slip-off preventing metal fittings 8a and 10a so that the cord 12 does not drop from the wheel.

As shown in FIG. 4, the fixing band 2 is composed of a fixing metal fitting 13 attached to the lower pole 5 and a fastening metal fitting 14 fixed to the lower pillar of the column to be built. Tightening plates 13 on both sides of 14
a, 13b, 14a, 14b are provided in a protruding manner, and the fastening metal is fixed to the lower pole 5 by tightening these fastening plates with bolts 15, 15, and the fastening metal 13 and the fastening metal 14 are integrally connected. It is like this.

The upper pillar fitting guide 3 guides the lower part of the upper pillar when the upper pillar of the pillar to be built is fitted to the lower pillar. And a tightening plate 16a, 16b, 1
7a and 17b are projected, and these tightening plates are attached to bolts 18,
By fastening with 18, the fixing member 16 is fixed to the lower lower pole 5, and the fixing member 16 and the receiving member 17 are integrally connected.

The lifting means 4 is attached to a support plate 19 fixed to the upper end of the upper pole 6, and this support plate 1
As shown in FIGS. 6 and 7, the fixing portion 19a of the member 9 is fastened to the upper pole by bolting, and is reinforced by a stay 20 having one end fixed to the upper end of the upper pole.

The hoisting means 4 comprises a fixed pulley 21 and a moving pulley 22 each of which is a two-wheel pulley, and a rope 23 for hanging is hung between the pulleys 23. The fixed end 23a of the rope 23 is the fixed pulley 21. The movable pulley 22 and the fixed pulley 2 are fixed to the holder 21a.
The movable pulley 22 is pulled upward by reciprocating 1 in this order twice and extending downward, and pulling down the free end 23b.

Like the above-mentioned rope 12 for lifting and lowering the upper pole, the rope 23 is also excellent in flexibility and tensile strength.
For example, a rope formed by twisting synthetic resin fibers is used. A connecting tool 24 for suspending the upper pillar P2 is detachably attached to the holder 22a of the movable pulley 22, and this connecting tool has an inner diameter larger than the outer diameter of the upper pillar P2 as shown in FIGS. Protruding plate portions 25a and 25b are formed on both sides of the holding ring 25 that is large, and both ends of the string 27 are tied to the rings 26 and 26 fixed to these projecting plate portions, and the connecting ring 28 is passed through the string 27. is there. This connecting ring 2
8 is a part of the ring that can be opened and closed.
It is detachably attached to the second holder 22a.

When the upper pillar P2 is hoisted, the straining fitting 30 for arranging the electric wire, which is previously attached to the upper end portion of the upper pillar, is provided.
The holding ring 25 is hooked from below to lift the upper part P2.

Next, the operation and operation of the building pole for constructing a joint type pillar using the pole for the building pillar constructed as described above will be explained in the order of the building pillar process with reference to FIGS.

<Building pillar process 1> For a building pillar in which a hole is dug in the ground 29 to fill the lower part of the lower pillar P1, the lower pillar is erected vertically, and the upper pole is housed on the side of the lower pillar P1. Set up the pole and fasten the fixed bands 2 and 2 (Fig. 9).

<Construction column process 2> When the free end 12b of the rope for lifting and lowering the upper pole is pulled down, the upper pole is extended upward, and the free end 12b of the rope is extended with the upper pole fully extended. Tighten between the fixing metal fitting 13 and the fastening metal fitting 14 of the upper fixing band 2 and stop. Then, when the rope 23 of the lifting means 4 is loosened, the moving pulley 22 is lowered, and the upper pillar P
A connecting ring 2 of a connecting tool in which a retaining ring 25 of the connecting tool 24 is fitted to the 2
8 is connected to the holder 22a of the moving pulley 22 which has been lowered (FIG. 10).

When a lightweight pulley is used as the movable pulley, when the movable pulley 22 is lowered, the movable pulley may not come down only by loosening the rope 23. In this case, however, the movable pulley is not lowered. Put down the string for pulling down from the holder of
Try pulling this string and letting down the moving pulley.

<Building column process 3> When the rope 23 is pulled, the movable pulley is pulled up, the upper column P2 is held by the connector 24, and is hung above the lower column P1 (FIG. 1).
1).

<Construction Column Step 4> After the upper pillar P2 is lifted above the lower pillar P1, the rope 23 is loosened and the upper pillar P2 is gradually lowered. The lower end of the upper pillar is guided by the guide 3 and guided to the upper end of the lower pillar, and the fitting hole P2a at the lower end of the upper pillar and the connecting projection P1a at the upper end of the lower pillar P1 are fitted to each other (Fig. 12).

<Building pillar process 5> After the building pillar is finished, the rope 2
3 is completely loosened, the fitting 24 is lowered along the upper column and removed from the column, and then the fixing bands 2, 2 are removed from the lower column P1. After removing the fixing band, the rope 12 is loosened while the pole body 1 is standing upright, and the upper pole 6 is lowered and stored in the lower pole 5.

The building pole of the present invention allows a joint type pillar to be easily erected by the above-mentioned operation. However, the present invention pole is used not only for building a pillar but also for removing a pillar. The operation and operation of the building pole when removing the pillar will be described below in the order of the removing process with reference to FIGS. Since the guide 3 for fitting the upper column is unnecessary in the removing process, it is removed from the pole body in advance.

<Removal Step 1> As in the building pillar step, the fixing bands 2 and 2 are fastened and fixed to the lower pillar P1, the free end 12b of the rope 12 for lifting the upper pole is pulled, and the upper pole is extended to play. The end 12b is entwined with the fixing band 2 and fixed. Next, the rope 23 of the lifting means 4 is loosened, and the moving pulley 22 is attached to the upper pillar P2.
The connection tool 24 fitted to the above is connected and the cord 23 is pulled.

The upper pillar P2 is lifted up and the fitting hole P is
When 2a is disengaged from the fitting protrusion P1a of the lower pillar, the rope 23 is shaken to shift the lower end of the upper pillar from above the lower pillar, loosen the rope 23, and lower the upper pillar to the ground. When the upper pillar is lowered to the ground, the connector 24 and the electric wire disposing anchor 29 are removed from the upper pillar.

The step of removing the upper pillar is the reverse of the step of fitting the upper pillar to the lower pillar in the building pillar steps 2 to 5 described above.

<Removal Step 2> The retaining ring 25 of the connector removed from the upper column in the previous step is fitted to the lower column P1, and the retractable metal fitting 30 also removed from the upper column is fixed above the retaining ring 25 (FIG. 13). ).

<Removal Step 3> Loosen the bolts 15 of the fixing bands 2 and 2 on the side of the fastener 14 and pull out the cord 23 to pull out the lower pillar P1 (FIG. 14).

After pulling out the lower pillar, the operator holds the pole body 1 and the lower pillar P1 and the rope 1 for lifting and lowering the upper pole.
2 is loosened, the upper pole 6 is stored in the lower pole 5, and the pole body 1 and the lower pillar P1 are both laid down on the ground.

By the above-described removal process, the lower pillar, which is difficult to pull out due to the ground pressure, can be easily pulled out, and the removal work can be performed by one worker. Further, since the pulling out work can be performed with the worker's waist extended, the labor load on the worker can be remarkably reduced.

Although the operator pulls the rope 12 for lifting and lowering the upper pole and the rope 23 of the hoisting means 4 by hand in the above-described embodiment, the pole main body 1 is provided with a small manual or electric motor. A winch or other hoisting machine may be attached and the rope may be pulled by this hoisting machine.

In the above-mentioned embodiment, the moving pulley 22 and the constant pulley 21 of the lifting means 4 are two-wheel pulleys.
The number of wheels of these pulleys determines the pulling force and length of the rope 23. For example, if the column to be built is lightweight and you want to lift it quickly, use a single pulley. On the contrary, if the weight of the pillar to be built is heavy, or if the lower pillar is difficult to pull out when removing the pillar, use a three-wheel or four-wheel pulley for these hoisting operations. May be performed lightly.

[0038]

Since the pole for a building pillar according to the present invention has the above-mentioned structure, the following effects can be obtained. The pole for a building pillar of the present invention allows the operator to perform both the building pillar work and the removal work on the ground, and it is not necessary for the worker to climb to a high place as in the past, so the pillar can be safely and easily installed. , Can be removed.

Further, since the lifting operation of the building pillar and the upper pillar at the time of removal and the pulling operation of the lower pillar at the time of removal are performed by pulling the rope through the movable pulley, the force required to pull the rope is For example, if the movable pulley and the fixed pulley are two-wheeled ones, the weight of the pillar is one-fourth, and the worker pulls the rope in a straight standing position on the ground to remove the building pillar and remove it. Can be done without straining the waist,
The labor burden on workers can be significantly reduced. Furthermore, one worker is sufficient to perform these building pillars and removal work, and the construction cost can be reduced.

Further, in the pole for a building pillar of the present invention, the upper pole can be moved up and down, and the upper pole can be stored in the lower pole, so that it can be easily transported to a work site or a narrow work site. . Moreover, since the components for raising and lowering the upper pole are provided inside the lower pole except for the rope for operation, these components for raising and lowering the upper pole interfere with the operation of the rope of the lifting means. In addition, the operation is easy.

[Brief description of drawings]

FIG. 1 is a front view of a building pole according to the present invention.

FIG. 2 is a partially cutaway front view showing an enlarged guide sleeve portion of the pole body.

FIG. 3 is a vertical sectional front view showing a lifting mechanism for an upper pole.

FIG. 4 is a plan view showing a fixing band.

FIG. 5 is a plan view showing a guide for fitting an upper column.

FIG. 6 is a side view showing a lifting means.

FIG. 7 is a plan view of a support plate for attaching the lifting means to the pole body.

FIG. 8A is a front view and FIG. 8B is a plan view showing a retaining ring of a connector.

FIG. 9 is a front view showing a state of the building pole of the present invention in the building pillar process 1.

FIG. 10 is a front view showing a state of a pole for a building pillar of the present invention in a building pillar process 2.

FIG. 11 is a front view showing a state of the building pole of the present invention in the building pillar process 3.

FIG. 12 is a front view showing a state of a pole for a building column of the present invention in a building column process 4.

FIG. 13 is a front view showing a state of the building pole of the present invention in the removing step 2.

FIG. 14 is a front view showing the state of the building pole of the present invention in the removing step 3.

[Explanation of symbols]

 1 Pole Main Body 2 Fixed Band 3 Guide 4 Lifting Means 5 Lower Pole 6 Upper Pole 7 Guide Sleeve 8 Pulley 8a Detachment Metal Fitting 9 Window 10 Fixed Pulley 10a Detachment Metal Fitting 11 Hole 12 Rope 12a Fixed End 12b Free End 13 Fixing Metal Fitting 13a, 13b Tightening plate 14 Tightening metal fittings 14a, 14b Tightening metal plate 15 Bolts 16 Fixing metal fittings 16a, 16b Tightening plates 17 Receiving metal fittings 17a, 17b Tightening plates 18 Bolts 19 Support plates 20 Stays 21 Constant pulleys 21a Holders 22 Moving pulleys 22a holder 23 rope 23a fixed end 23b free end 24 connector 25 retaining ring 25a protruding plate 26 ring 27 string 28 connecting ring 29 ground 30 retaining metal P1 lower pillar P1a fitting convex portion P2 upper pillar P2a fitting hole portion

Claims (1)

[Claims] 1. An upper pole, comprising: (a) a lower pole made of a hollow pipe having an open upper end, and an upper pole having an outer diameter slightly smaller than the inner diameter of the lower pole and the lower end inserted into the lower pole. The pole body is provided so that it can move up and down from the upper end of the lower pole opening. (B) A fixed band that secures the pole body to the lower pillar that is erected by burying the lower end side in the ground. (C) The lower pole of the pole body. A guide for fitting the upper pillar, which is attached to the upper end of the upper pillar and is connected to the upper end of the lower pillar, to the fitting of the upper pillar to the lower pillar. (D) Fasten one end of the rope suspended between the fixed pulley attached to the upper end of the upper pole and the moving pulley connected to the upper end of the column to be hoisted to the fixed pulley, and the other end on the ground. Pull the movable pulley upward by pulling (E) One end of the rope is fastened to the side surface near the upper end of the lower pole and the other end of the line passing through the lower pole is located on the side opposite to the fastening portion of the lower pole. The upper pole so that it can be moved up and down by operating the end of the rope that is led to the outside of the lower pole. The pole for the building pillar.