JP3241609U - pile extractor - Google Patents

Abstract

An object of the present invention is to provide a pile extractor capable of reliably extracting piles while improving operability. A pile extractor has a cylindrical main body 1, and slits 12a, 12b, 13, and 14 are formed on the peripheral surface of the main body by cutting out a part of the peripheral direction so that piles can be engaged. formed. With this configuration, the pile can be pulled out from the ground by holding both ends of the main body and pulling it upward in a state where the pile is engaged with the slit so that the length direction of the main body faces the ground. For this reason, according to the pile extractor of the present invention, compared to the conventional pile extractor that needs to simultaneously perform the operation of pinching the pile with the rod member and the operation of pushing down the rod member, it is possible to improve the operability of the pile. can be reliably pulled out. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a pile extractor for extracting long piles driven into the ground from the ground.

As a pile extractor of this type, a pile extractor disclosed in Patent Document 1 below is known. This pile extractor is constructed by pivotally supporting two rod members crossing each other near the tip thereof, and connecting the rod members to a connecting member so as to be rotatable around the pivoted point. When pulling out a pile that has been driven into the ground using this pile extractor, the grip of each rod member is operated to pinch the pile between the tips of the rod members, and the grips are pushed down with the connecting portion as a fulcrum to push down the tip. lift the part. This pulls the stake out of the ground.

Japanese Utility Model Laid-Open No. 58-45744

However, the conventional pile extractor has the following problems to be improved. Specifically, the conventional pile extractor pulls out the pile from the ground by operating the grips of the rod members and pushing down the grips while the pile is sandwiched between the tips of the two rod members as described above. is configured as In other words, it is necessary to perform the action of pinching the pile with the rod members and the action of pushing down the rod members at the same time, which poses a problem of poor operability. In addition, there is also the problem that if the force with which the pile is sandwiched by the rod members is loosened, it becomes difficult to pull out the pile.

SUMMARY OF THE INVENTION The main object of the present invention is to provide a pile extractor capable of reliably extracting piles while improving operability.

In order to solve the above problems, a pile extractor according to claim 1 is a pile extractor for extracting a pile driven into the ground, comprising a cylindrical main body, and a peripheral surface of the main body having a , a slit is formed by notching a part in the circumferential direction, and the slit can pass the pile in a state where the length direction of the main body and the length direction of the pile are orthogonal, and the main body The pile is configured to be locked at the edge of the slit while the length direction and the length direction of the pile are inclined.

Further, the pile extracting machine according to claim 2 is the pile extracting machine according to claim 1, further comprising an engaging tool that can be engaged with the pile, and a slit through which the pile can be inserted at the tip of the main body. is formed.

The pile extractor according to claim 3 is the pile extractor according to claim 1 or 2, further comprising a closing member attached to the base end of the main body to close the base end.

According to the pile extractor according to the present invention, by providing a cylindrical main body having a slit formed on the peripheral surface by notching a part in the circumferential direction, the length of the main body and the length of the pile The pile is pulled out from the ground by inserting the pile into the slit in a state in which the directions are perpendicular to each other, and pulling up by holding both ends of the main body in a state where the length direction of the main body and the length of the pile are inclined. be able to. For this reason, according to the pile extractor of the present invention, compared to the conventional pile extractor that needs to simultaneously perform the operation of pinching the pile with the rod member and the operation of pushing down the rod member, the pile extractor can improve the operability. can be reliably pulled out.

Further, according to the pile extractor according to the present invention, the engaging tool that can be engaged with the pile is provided, and the slit is formed in the tip part of the main body, so that the lower part of the engaging tool engaged with the pile The main body is made to function as a lever by inserting the slit in the distal end and using the engaging tool as an action point, placing a support member near the slit as a fulcrum, and pushing down the base end of the main body as a point of force. Therefore, it is possible to easily pull out a pile that is difficult to pull out by pulling up the main body.

In addition, according to the pile extractor according to the present invention, the pile extractor can be made to function as a pile driver by providing the blocking member that is attached to the base end portion of the main body and closes the base end portion. .

1 is a perspective view showing a configuration of a pile extractor 100; FIG. 3 is a perspective view showing the configuration of an engaging tool 3; FIG. FIG. 4 is a first explanatory diagram for explaining how to use the pile extractor 100; FIG. 11 is a second explanatory diagram for explaining how to use the pile extractor 100; FIG. 11 is a third explanatory diagram for explaining how to use the pile extractor 100;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a pile extractor according to the present invention will be described below with reference to the accompanying drawings.

First, the configuration of a pile extractor 100 as an embodiment of the pile extractor according to the present invention will be described. The pile extractor 100 is, as shown in FIG. It comprises a portion 1 , a closing member 2 and an engaging tool 3 .

The body portion 1 is formed in a tubular shape (for example, a cylindrical shape). In addition, slits 12a and 12b (hereinafter also referred to as "slits 12" when not distinguished) are formed in the peripheral surface 11 of the main body 1 at an intermediate portion in the length direction by notching a part of the peripheral direction. . The slit 12a is defined to have a width slightly wider than the diameter of the stake 300a. ) are perpendicular to each other (the state shown in FIG. 3), the pile 300a can be inserted, and in the state in which the direction D1 and the direction D2 are inclined (the state shown in FIG. configured to be stopped. In addition, the slit 12b is defined to have a width slightly wider than the diameter of the pile 300b, which is smaller than the diameter of the pile 300a. is inclined (the state shown in FIG. 3), the stake 300b is engaged with the edge of the slit 12b.

A slit 13 is formed in the tip portion 1b of the body portion 1. As shown in FIG. As shown in FIG. 1, the slit 13 is defined to have a width slightly wider than the diameter of the pile 300a (a width through which the pile 300a can be inserted), and is formed along the direction D1 of the main body 1. As shown in FIG.

A slit 14 is formed from the tip portion 1b of the body portion 1 to the intermediate portion 1c. The slit 14 is used for inserting the base end side of the pile 300 when driving the pile 300 into the ground 200 using the pile extractor 100 .

The closing member 2 is attached to the base end portion 1 a of the main body portion 1 . By attaching the blocking member 2 to the main body 1, the pile extractor 100 can function as a pile driver, as will be described later.

The engaging tool 3 is composed of two members 3a and 3b pivotally supported to be openable and closable shown in FIG. 2, and a fastening screw 3c for fastening the members 3a and 3b. As shown in FIG. 4, the engaging member 3 can be engaged with any position on the pile 300 by tightening the fastening screw 3c while the pile 300 is inserted. By inserting a spacer between the members 3a and 3b in accordance with the thickness of the pile 300, the engaging member 3 can be reliably engaged with the thin pile 300.

Next, how to use the pile extractor 100 will be described. When the pile extractor 100 is used to pull out the pile 300a driven into the ground 200, as shown in FIG. The stakes 300a are inserted through the slits 12a of the main body 1 in a state in which they are perpendicular to each other.

Next, while the direction D1 and the direction D2 are inclined, both ends of the main body 1 are grasped with both hands and pulled upward. At this time, the inclination of the direction D1 and the direction D2 causes the edge of the slit 12a in the main body 1 to engage with the pile 300a, and the pile 300a is pulled out from the ground 200 as the main body 1 is pulled up. be As described above, in the pile extractor 100, unlike the conventional pile extractor, it is not necessary to simultaneously perform the operation of holding the pile 300a between the rod members and the operation of pushing down the rod member. can be reliably pulled out.

When the pile 300b having a diameter smaller than that of the pile 300a is pulled out, the above operation is performed using the slit 12b, so that the pile 300b can be easily and reliably pulled out in the same manner as described above.

In addition, when the pile 300 is firmly fixed to the ground 200 and it is difficult to pull out the pile 300 by the above operation, as shown in FIG. Attach the engaging tool 3 . Next, the slit 13 of the main body 1 is inserted into the lower part of the engaging tool 3 in the pile 300a. Subsequently, the support member 400 is arranged between the tip portion 1 b of the main body portion 1 and the ground 200 . Next, the base end portion 1a side of the main body portion 1 is grasped and the base end portion 1a of the main body portion 1 is pressed in the direction of the arrow shown in FIG. At this time, the pressing portion of the body portion 1 is the point of force, the contact portion of the body portion 1 with the support member 400 is the fulcrum, and the contact portion between the edge portion of the slit 13 and the engaging member 3 is the point of action. A large force is applied to the contact portion between the edge of the slit 13 and the engaging member 3 . This makes it possible to easily pull out the strongly fixed pile 300a. When the pile 300a cannot be pulled out in one operation (the tip side of the pile 300a remains on the ground 200), the pile 300a can be pulled out by stacking the supporting members 400 in multiple stages and operating again.

Also, the pile extractor 100 can be used as a pile driver. When pile driving is performed using the pile extractor 100, as shown in FIG. The main body part 1 is put on the upper end part side of the pile 300 by inserting the part side. Next, hold the stake 300 straight with one hand, and move the main body 1 up and down with the other hand to drive the blocking member 2 onto the upper end of the stake 300 . The stake 300 is thereby driven into the ground 200 . When the driving is completed, the body part 1 is lifted until the top end part of the pile 300 is below the slit 14, and the body part 1 is lifted until the tip part 1b of the body part 1 is above the top end part of the pile 300. The main body part 1 can be removed from the pile 300 without removing.

In addition, the structure of the pile extractor of this application is not limited to the above-described structure. For example, although the configuration example in which two slits 12 are formed along the circumferential direction of the peripheral surface 11 has been described above, a configuration in which only one slit 12 is formed or a configuration in which three or more slits 12 are formed may be adopted. can also Also, when not used as a pile driver, it is possible to adopt a configuration in which the closing member 2 and the slit 14 are not provided.

Reference Signs List 1 main body 2 blocking member 11 peripheral surface 12a, 12b slit 13 slit 100 pile extractor 200 ground 300a, 300b pile D1, D2 direction

Claims (3)

A pile puller for pulling out a pile driven into the ground,
Equipped with a cylindrical main body,
A slit is formed by notching a part of the main body in the circumferential direction,
The slit is such that the pile can be inserted in a state where the length direction of the main body and the length direction of the pile are orthogonal, and the length direction of the main body and the length direction of the pile are inclined. a pile extractor configured such that the pile is locked at the edge of the slit. An engaging tool that can be engaged with the stake,
2. The pile extracting machine according to claim 1, wherein a slit through which said pile can be inserted is formed in the leading end of said main body. 3. The pile extractor according to claim 1, further comprising a closing member attached to the base end of said main body to close said base end.

Images