JP2002348871A - Pile drawing crowbar 2 - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable anyone to easily perform pile drawing work without straining his/her back or requiring time even in case of nonuse of heavy equipment. SOLUTION: A force, which is applied when a pile is drawn out, is abated by utilizing the principle of leverage, and a crowbar is brought down, so as to allow anyone to easily draw out the pile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pulling out a wooden pile driven into the ground according to the principle of leverage.

[0002]

2. Description of the Related Art Conventionally, pulling out by hand is almost always performed by hitting a part that is on the ground from the side to make a gap between the pile and the surrounding ground, and it is easy to pull out the pile even if it is a little. I was pulling out. When it could not be pulled out by hand, a wire, wire, rope, etc., was wound around a pile, and if there was a heavy machine, it was pulled up, or a long, thick rod was wound around an iron wire, and the lever was used to pull it up.

[0003]

In the prior art, even a pile driven by a hammer with a hammer, which does not move even if a force of 100 kg or more is applied until the pile in the soil starts moving when the pile is pulled out by hand. Because there is no, you may hurt your back trying to pull it out by hand. Also, the pile breaks when hitting it from the side. Even if an iron wire or the like is wound and a long and thick rod is used to lift the wire using this action, the wound iron wire or the like may come off. Moreover, it often takes 5 to 10 minutes to remove one pile. Furthermore, when it cannot escape, it is dangerous to cut the part that has come out on the ground with a saw and drive in the remaining part.
From the above, the pile removal operation has problems such as time loss, financial loss, and extremely large physical damage.

[0004]

[MEANS FOR SOLVING THE PROBLEMS] In order to solve the above-mentioned problems, a pile grip portion for inserting an exposed portion of a pile driven into the soil, and a lever in a state where the pile grip portion sandwiches the pile. The present invention has devised a pile removal bar having an external force applying portion for applying an external force in a direction in which a pile is pulled out by an action. The pile gripping portion has a pile receiver provided on the tip end side of one side of the lever member bent at a predetermined angle, and a pile retainer for inserting the pile between the pile receiver and the pile retainer. Is detachably attached to the other side. To remove a stake, two tasks are required: firmly grasping the stake and pulling it up.
The present invention has been devised as a solution to the problem of how to firmly grip the pile and how to produce a force of 100 kg or more that must rely on heavy equipment.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
As shown in FIG. 1, a grip bar 1 protruding from the iron plate 2 is provided at one end in the longitudinal direction of the iron plate 2. Receiving part 3
Has been fixed. Iron plate 4 facing the other end of iron plate 2
A part of one end is cut in a U-shape in the same manner as the iron plate 2, and a stake holder 5 vertically projecting from the tip is fixed. The edge of one end of the iron plate 2 has an iron plate 7 projecting vertically.
Has been fixed. Connecting rods 6 are provided on both sides of the iron plate 4 so that the iron plate 4 can be connected to the iron plate 7 by screws.

As shown in FIG. 2, a vertically protruding iron plate 17 is fixed to an edge of one end of the iron plate 12, and connecting rods 16 provided on both side surfaces of the iron plate 14 are fixed to the iron plate 17 by a screw for adjusting a pile diameter. A hole was provided so that it could be fixed at 18. Several holes may be provided at different heights so that they can be adjusted according to the size of the pile.

When the connecting rod 36 is horizontal as shown in FIG. 4, the distance between the pile holding part 35 and the pile receiving part 33 is wide, so that the pile can be covered from above.

As shown in FIG. 5, the pile holding portion 45 is lowered,
When it comes into contact with the ground, the interval between the pile receiving portion 43 is reduced, and the pile between the pile receiving portions 43 is fixed by the pile holding portion 45 and the pile receiving portion 43.

After installing the pile pull bar as described above,
When an external force is applied to the gripping bar in a certain direction, the connecting bar connected to the iron plate by the pile diameter adjusting screw and the pile holding unit are pulled in the same direction. At this time, the pile further adheres to the pile receiving part by the force of the pile holding part moving in a certain direction, and firmly fixes the pile. And, by the action of the lever, the pile receiving portion, which is the point of action, tends to float off the ground, so that the pile holding portion that makes the pile close together also floats, and the pile is lifted to the ground surface. At a time, it comes out of the soil about 10 cm. When the gripping rod is returned to the original angle, the space between the pile receiving part and the pile holding part widens, so that the pile holding part goes down, but the pile does not return to the soil. When the pile holding part is lowered, the pile is again fixed by the pile holding part and the pile receiving part. After repeating two or three times, the stake comes out completely without human being touching it.

[0010] Even when there is no portion of the pile receiving portion and the pile holding portion protruding from the iron plate, if the iron plate has a U-shaped cut, the pile can be sandwiched, and the work of pulling out the pile can be performed. It is possible.

The connecting rod need not be a screw-shaped one as shown in the figure, but may be any one that can be connected to a bar.

The above-mentioned pile pull-out bar is a pile pull-out bar using a connecting rod and a pile holding portion. In addition to the above,
The same effect can be obtained by a pile pull bar using a chain, a wire, a rope, or the like as described below.

As shown in FIG. 6, in the case of a pile pullout bar having only a chain without a connecting rod or a pile holding portion, a pile is brought into close contact with a pile receiving portion 53 of an iron plate 52, and The chain 56 is wound half a turn and hooked on the hook 59b.
When the handle 56 is fixed and the grip bar 51 is depressed, the chain 56 firmly grasps the pile and the pile comes off.

As shown in FIG. 7, in the case of a pile pull-out bar having a chain 66 and a pile holding portion 65, the chain 66 is passed through the tension adjusting hole 67, and the pile receiving portion 53 and the pile holding portion 65 are formed.
Fix the pile sandwiched between. When the grip bar 61 is pulled, the chain 66 is also pulled, and the pile holding portion 65 further firmly fixes the pile, so that the pile can be pulled out.

In all of the above-mentioned pile pull-out burs, if the gripping bar is of a plug-in type, it can be made compact and lightweight, and can be more easily carried. In addition, the pile removing bar may be made of any material other than the iron plate as long as the pile removing operation can be performed without any problem.

[Effects of the Invention] The pile removal operation can be performed with one touch, thereby reducing labor costs, shortening the work time, eliminating work-related injuries such as stiffness due to the pile removal operation, eliminating the need for heavy equipment, and reducing the reuse rate of piles. Effects such as improvement can be obtained.

[Brief description of the drawings]

Fig. 1: Overall view of a pile without bar

[Fig. 2] Top view of bar without pile

FIG. 3 is a rear view of a bar without a pile.

FIG. 4 is a side view of a bar without a pile 1

FIG. 5 is a side view of a bar without a pile 2

FIG. 6 is an overall view of a chain type piling bar.

FIG. 7 is an overall view of a chain type piling bar 2

[Explanation of symbols]

1, 21, 31, 41, 51, 61 Retaining rod 2, 12, 22, 32, 42, 52, 62 Iron plate (bar) 3, 13, 33, 43, 53, 63 Pile receiving part 4, 14, 64 Iron plate (Pile retainer) 5, 15, 35, 45, 65 Pile retainer 6, 16, 36, 46 Connecting rod 7, 17, 27, 37, 47 Iron plate (Pile diameter hole) 8, 18, 38, 48 Pile diameter adjustment Screw 19, 39, 49 Nut 56, 66 Chain 67 Tension degree adjustment hole 58a, 68a Hook 59b, 69b Hooked portion

Claims (3)

[Claims] 1. A pile grip portion for clamping an exposed portion of a pile driven into the ground, and an external force applying portion for applying an external force in a direction in which the pile is pulled out by leverage with the pile grip portion sandwiching the pile. A crowbar with a stake. 2. The pile gripping portion has a pile receiver provided on a tip side of one side of a lever member bent at a predetermined angle, and a pile retainer for inserting a pile between the pile receiver and the pile holder. The pile retainer is detachably attached to the other side of the lever member,
The pile pull bar according to claim 1. (3) A pile removing bar provided with a device for winding or gripping the pile with a rope, a chain, or a wire to firmly grip the pile.