JPH10121475A - Method and device for extracting wooden pole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability and safety by confirming the rot of a wooden pole root, reinforcing the rotted root portion, attaching a wooden pole separation tool and support fittings to the portion to be cut off, and cutting off the wooden pole in the middle. SOLUTION: When it is confirmed that the root of utility pole 1 is rotted, metallic stakes 2a, 2b are driven with their upper halves left above the ground to reinforce the root portion of the pole, and the portion above the ground is tightened using chains or wires 3a, 3b. A wooden pole separation tool 4 is attached and secured to the utility pole 1. Wooden pole support fittings 5a, 5b are secured above and below the wooden pole separation tool 4, and the upper and lower wooden pole support fittings 5a, 5b are interconnected through a chain lever whist 6 using a chain 7. A position to be cut is them cut with a saw. The whist 6 is slowly loosened, the wooden pole is gradually tilted; and the wooden pole separation tool 4, wooden pole support fitting 5, whist 6, and chain 7 are removed after confirming that the top end has contacted the ground, and the severed wooden pole is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing a wooden pole over which a telephone line, a power line and the like are laid, and more particularly, to a small number of people without requiring special experience. The present invention relates to a method and an apparatus for safely cutting and removing a wooden pillar by using the method.

[0002]

2. Description of the Related Art Hitherto, cedars, cypresses, pine trees, and so on have been subjected to creosote, water-soluble preservatives, etc. on their bases as pillars on which telephone lines, light lines, etc. are laid. Wooden pillars such as pine are often used. These wooden pillars
It has been widely used because it can be obtained at relatively low cost and is easy to process and transport. However, it may be necessary to remove it due to exchange, route change, or the like due to its useful life.

A conventional method of removing a wooden pole will be described with reference to FIGS. (1) Before starting the removal work, check the power pole for rot. If the base of the utility pole is decayed, there is a risk of breakage when working on the utility pole, so it is essential to check for decay of the buried part in the soil. The following can be cited as a method of confirmation. Visually check the inclination of the utility pole. Hit the root with a hammer or the like to check the sound. In addition to excavating a root portion of at least about 20 cm, driving a pointer rod, and checking the presence or absence of root rot depending on the degree of entry, it is also possible to shake and inspect the whole. (2) As a result of these inspections, if it is confirmed that there is root rot, a metal pile is driven in to reinforce the root. At that time, in order to complete the reinforcement by the metal pile, a wire, a chain, or the like is wound around the metal pile and then tightened. (3) To prevent the utility pole from overturning, tie a few ropes for steadying to the head and tie the other end to a stake, tree or the like. (4) Remove the utility pole. The one shown in FIG. 4 pulls the guiding rope 11 on one side and at the same time gradually loosens the load adjusting rope 12 on the other side, and supports it by the pin 13 before the utility pole 1 completely falls down. In this method, it is necessary to excavate the root in the direction in which the utility pole falls. The one shown in FIG. 5 supports the utility pole 1 with a tripod 14, removes it with a hoist 15, removes the tripod 14 and the hoist 15, then pulls the induction rope 11 and simultaneously gradually loosens the load adjustment rope 12 on the other side. Before the utility pole 1 completely falls, the utility pole 13 is supported by the pin 13. The thing shown in FIG. 6 attaches the temporary pole 16 which attached the hoist 15 along the electric pole 1 to be withdrawn,
Pull the induction rope 11 and load adjustment rope 1 on the other side at the same time
2 is gradually loosened before the pole completely falls.
To support telephone poles. (5) Remove the removed utility pole 1 and refill the removed hole.

[0004]

The conventional method for removing wooden poles comprising the above-described working steps has the following problems. First, (1) it is not easy to confirm root rot. That is, the inspection by tapping sound, visual inspection, and the like requires some skill, and it is difficult to achieve perfection.
When the root rot is overlooked and the user climbs up to a telephone pole for attaching the rope in (3), for example, there is a danger that the root may break, fall, or fall. An accident that caused the telephone pole to break while working on the telephone pole and fell, resulting in death, was reported every year in Oita Prefecture in 1987, and safety work has been strongly reviewed. I have been asked. As an improvement measure for this purpose, aerial work vehicles were introduced so that ropes for anti-sway could be attached without climbing to a utility pole. However, the use of aerial vehicles has many limitations, including: For example, a work place is a place where a working vehicle cannot easily enter, such as a field, a residential area, or a mountainous area, a narrow road with little parking space even in an urban area, or another parked vehicle at the time of work. Obstruction,
Use of aerial vehicles may be difficult. In addition, since the surface on which the tripod used in the removal operation of (4) is installed is desirably hard and horizontal, not only is the installation location limited, but it becomes difficult to use the telephone pole when it begins to tilt. , Pulled out while keeping the vertical by the rope wrapped around the head. However, in practice, this vertical work is difficult and dangerous,
Improvement was required. In the method of attaching the temporary column, it takes a lot of time to attach the temporary column, and the work efficiency is poor. In addition, the operation of maintaining the vertical position with a rope is necessary as in the case of using a tripod. In addition, since the removal of these utility poles involves pulling out the entire utility pole, even if a hoist was used, it was actually quite heavy labor. Furthermore, since all of the conventional methods require a large number of workers, improvement has been strongly desired in view of a decrease in the number of young workers engaged in these field work involving physical labor, aging, and the like.

[0005] In addition to the above, there is a demand for a safe and quick removal method of wooden pillars. In addition to the above, social requirements for changing the installation location, suppressing the use of wooden pillars, and wooden pillars are inherently required. Defects and the like. As a change of the installation location, there is a change from a suburban route (fields, fields, forests, etc.) to a road side. This is to speed up the response in the event of a failure and at the same time to enable the work by mechanical power.
It is something going on. The social demand for reducing the use of wooden pillars can include protecting forest resources from the perspective of environmental protection on a global scale. In addition, it is easy to replace electric poles with artificial ones, such as those made of concrete or steel pipe, and this is partly because there is a strong demand for directing wood for house construction, which is its original use. . Furthermore, the inherent defect of wooden pillars is that the degree of decay depends greatly on the soil conditions,
The point is that exchange cannot be performed uniformly.

The present invention provides a method and an apparatus for removing the drawbacks of the above-mentioned conventional method of removing wooden poles, so that even a small number of persons without special experience can safely and safely remove them. An object of the present invention is to make it possible to easily remove a wooden pillar. A further object of the present invention is to prevent the accident caused by the breakage of the wooden pillar when climbing the wooden pole by enabling the wooden pillar to be removed without climbing the wooden pillar.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above objects, the present invention provides a process of confirming root rot of a portion buried in the soil of a wooden pillar and then reinforcing the root portion, Attaching a wooden pillar separating tool to the upper and lower wooden pillar supporting brackets above and below the wooden pillar separating tool, further connecting the upper and lower wooden pillar supporting brackets with a chain via a chain lever hoist, and sawing. A step of cutting the cutting portion, a step of gradually lowering the wooden pillar while loosening the chain lever hoist after the cutting, and a step of removing the wooden pillar separating tool, the wooden pillar support bracket and the chain, and removing the cut wooden pillar. And removing the remaining wooden pillar from the cut portion with a hoist, and then refilling the hole. In addition, the equipment used for its removal is
It is characterized by comprising a wooden pole separating tool, a pair of upper and lower wooden pole supporting brackets, a chain interposing a chain lever hoist connecting the wooden pole supporting brackets, and a hoist for extracting a lower remaining wooden pole from a cut portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for removing a wooden pillar according to the present invention will be described with reference to the drawings. (1) Before starting removal work, check the root rot of utility pole 1.
The presence or absence of root rot is confirmed by the conventional method described above.
As a result, when it is confirmed that the power pole 1 has root rot, the metal stakes 2a and 2b are driven in while leaving the upper half, and the root portion is reinforced. Tighten by 3a, 3b. that time,
In order to secure the tightening with a chain or the like more securely, it is preferable to use a tightening machine used for tightening a rope of a truck bed, for example, to secure the tightening. (2) Attach the wooden pole separator 4 to the utility pole 1 and fix it. In the wooden pole separating device 4 having a configuration described later, the upper bracket 4a is rotatable about the connecting portion of the connecting plate 4b as a fulcrum. (3) The wooden pole supporting brackets 5a and 5b are fixed above and below the wooden pole separating tool 4, and the chain 7 is connected via the chain lever hoist 6.
Thus, the upper and lower wooden pole supporting brackets 5a and 5b are connected. The tension of the chain 7 is enough that the slack can be slightly confirmed by hand. (4) Marking is applied to the cut portion 8. As the cutting portion 8, it is desirable that the middle of the connecting plate 4b of the wooden pole separating tool 4 be substantially in relation to the load applied to the rotating portion of the upper bracket 4a and the connecting plate 4b. (5) Cut the marked portion 8 with a saw.
The cutting can be performed reliably by cutting about one third of the side on which the utility pole 1 falls, and then cutting the remaining two thirds from the other side. Further, when the cutting progresses and the weight of the electric pole 1 makes it difficult to move the saw back and forth, and the cutting becomes difficult, the cutting work can be easily performed by pushing up the upper wooden pole supporting bracket 5a. (6) When the cutting is completed, loosen the chain lever hoist 6 slowly, gradually lower the wooden pillar 1a, and confirm that the tip of the wooden pillar 1a contacts the ground. (7) The wooden pillar separating tool 4, the wooden pillar supporting brackets 5a and 5b, the chain lever hoist 6 and the chain 7 are removed, and the cut wooden pillar 1a is removed. (8) Utility pole 1b protruding below the ground from the cut
Attach a known tripod and hoist, pull out, and then refill the hole.

Next, an apparatus used in the above-described removing method will be described. The wooden column separating device 4 includes an upper bracket 4a, a lower bracket 4c, and upper and lower brackets 4c.
The upper bracket 4a is pivotally mounted on the upper end of the connecting plate 4b so that its lower end is rotatable. The lower side of the connecting plate 4b is fixed to the lower bracket 4c with bolts and nuts. Further, a curved portion is formed on the contact side of the brackets 4a and 4c with the utility pole to ensure the contact with the wooden pole 1. The wooden pole separator 4 is attached to the utility pole 1 by a chain or a wire. Wooden pole support fittings 5a, 5
“b” is of the same shape composed of two steel frames each having a contact portion to the utility pole 1 on one side, and the two frames are pivotally mounted at the tips and are configured to be freely foldable. The upper and lower wooden pole separators 5a and 5b are fixed to the utility pole 1 by chains or wires. Further, the tips of the upper and lower wooden pole separators 5 a and 5 b attached to the utility pole 1 are connected by a chain 7 via a chain lever hoist 6.
The chain lever hoist 6 uses a ratchet to wind up the chain and adjust the tension.
In the present invention, known ones are used.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a more specific embodiment of the present invention comprising the above steps and configuration will be described below. The wooden pole used in the present embodiment is a utility pole 1 having a length of 600 cm above the ground and a length of 150 cm underground. (1) After confirming the root rot of the utility pole 1, leave the 130 cm metal piles 2a and 2b, leaving 80 cm, wind the chains 3a and 3b around the 80cm above the ground, and tighten them using a small tightening machine. Tighten and fix by 0.4 tf. (2) The wooden pillar separator 4 is fixed to a location where the center of the connecting plate 4b is 100 cm from the ground. The brackets 4a and 4b of the wooden pole separator 4 are fixed to the utility pole 1 via a chain. (3) The upper wooden pole support 5a and the lower wooden pole support 5b are fixed by a chain with the wooden pole separator 4 interposed therebetween. As the frames of the upper and lower wooden pole supporting brackets 5a and 5b, those which withstand a compression and tensile load of 1.4 tf were used. Next, the ends of the upper and lower wooden pole supporting brackets 5a and 5b are connected to a chain lever hoist 6 having a rated load of 0.5tf.
Through a chain 7. (4) Marking is performed at a substantially middle portion of the connecting plate 4b of the wooden pillar separating tool 4, that is, a portion 100 cm from the ground surface as a cut portion 8. (5) Cut the marked portion 8 with a saw.
When the cutting is completed, the chain lever hoist 6 is slowly loosened, the utility pole 1a is gradually lowered, and it is confirmed that the tip of the utility pole 1a contacts the ground. The length of the cut utility pole 1a is 500 cm, and its weight is 64 kg. The static load corresponding to the inclination angle is 5 kgf at 10 degrees and 20 kgf at 20 degrees, and the static load increases in proportion to the inclination angle. When the wooden pillar is inclined by about 40 degrees, a load of approximately the same weight (65 kg) as the cut wooden pillar is applied to the chain lever hoist, and the maximum is obtained when the wooden pillar comes into contact with the ground at 110 degrees, which is 350 degrees.
kgf. (6) The wooden pole separating tool 4, the wooden pole supporting brackets 5a and 5b, the chain lever hoist 6 and the chain 7 are removed, and the cut utility pole 1a is removed. (7) After the lower utility pole 1b is removed from the cut portion using a known tripod and hoist, the hole is backfilled.

In the above-described embodiment, telephone poles such as telephone lines and electric light lines are shown as examples. However, the present invention cuts wooden poles and then removes the remaining wooden poles. This can also be applied when removing piles or logging timber. For example, in the case of application to the cutting of timber, it is only necessary to fix a wooden column separating tool and upper and lower wooden column supporting brackets at the cut portion, then cut with a chain saw or the like, and gradually loosen the chain lever hoist.

[0012]

The method and the apparatus for removing wooden poles according to the present invention having the above-described steps and configurations do not require a rope to prevent the pole from swaying when the wooden pole is removed. There is no necessity, and it is possible to prevent a personal injury caused by a broken utility pole. Moreover,
In removal work, reinforce the root part, wooden pillar separation tool,
Since it is only necessary to attach wooden pole support brackets, etc., even in places where it is difficult to use
Can work. Further, in the present invention, since the wooden pillar is cut and removed in the middle, the weight of the cut wooden pillar can be easily transported by at least two workers, and the lower wooden pillar is removed from the cut portion. In this case, the hoist, tripod, etc. used can be small because it is lighter and easier than when the entire wooden pillar is removed as in the past, so it can be easily transported, and work in mountainous areas etc. It can be done with a small number of people. Further, in the present invention, since the falling direction of the wooden pillar is regulated by the wooden pillar separating tool, it is possible to prevent an accident such as the underlay of the wooden pillar when it falls down. Being able to know the direction of falling in advance will greatly help to avoid dangers in places where working places are limited and sufficient evacuation sites cannot be secured in advance, such as removing wooden poles and deforestation in mountainous areas.

The apparatus used for cutting in the present invention has a relatively small number of parts such as a wooden pole separating tool, upper and lower wooden pole supporting brackets, a chain, a chain lever hoist, and the like. Since it is only necessary to do so, no special skills and tools are required, so that not only skill is not required but also a small number of people can install the device in a short time. Furthermore, since the wooden pillar separation tool used for cutting is to fix the upper and lower wooden pillars at the cutting location, the upper and lower wooden pillars are not separated even after the cutting is completed. The wooden pillars are separated, and the cut wooden pillars rebound, thereby preventing the occurrence of an accident and impact. Also, since each component of the device according to the present invention can be replenished,
It has many excellent effects, such as easy handling of failures and losses.

[Brief description of the drawings]

FIG. 1 is a side view showing actual removal of a wooden pillar according to the present invention.

FIG. 2 is a side view showing actual removal of a wooden pillar according to the present invention.

FIG. 3 is a perspective view showing a part of a wooden pole removing device according to the present invention.

FIG. 4 is a schematic view showing conventional removal of a wooden pole.

FIG. 5 is a schematic view showing a conventional removal of a wooden pole.

FIG. 6 is a schematic view showing conventional removal of a wooden pole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power pole 4 Wooden pole separation tool 4a Upper bracket 4b Connecting plate 4c Lower bracket 5a Wooden pole support bracket 5b Wooden pole support bracket 6 Chain lever hoist 7 Chain

Claims (4)

[Claims] 1. A step of reinforce | reinforcing the root part after confirming the root rot of the part buried in the soil of a wooden pillar, attaching a wooden pillar separation tool to a cutting part, and attaching a pair of upper and lower wooden pillar support brackets Fixing the wooden pole separating tool vertically, connecting the upper and lower wooden pole supporting brackets with a chain via a chain lever hoist, cutting the cut portion with a saw, and loosening the chain lever hoist after cutting. The process of gradually lowering the wooden pillars while removing the wooden pillar separating tool, the wooden pillar support bracket and the chain, and removing the cut wooden pillars, and the remaining wooden pillars below were cut out from the cut part by a hoist And a step of backfilling the holes. 2. A wooden pillar separating tool, a pair of upper and lower wooden pillar supporting brackets,
A wooden column removing device, comprising: a chain interposing a chain lever hoist for connecting a wooden column supporting bracket; and a hoist for extracting a lower remaining wooden column from a cut portion. 3. An upper bracket, a lower bracket, and a connecting plate for connecting the upper and lower brackets, wherein the upper bracket is pivotally mounted on an upper end of the connecting plate such that a lower end thereof is rotatable. 3. The wooden pole separating device according to claim 2, wherein the lower bracket is fixed to the connecting plate. 4. A two-steel frame having a front end portion pivotally mounted to freely open and a contact portion with a wooden pillar formed at the other end portion, and the front end portion has a chain lever hoist interposed therebetween. 3. A pair of upper and lower wooden pole supporting brackets according to claim 2, which are connected by a chain.