JP2010281133A - Pile removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pile removing device, which allows to easily pull out a pile driven to the ground by manual force while firmly fixing the head of the pile. <P>SOLUTION: The pile removing device includes: a support base having a mounting shaft at an upper part; a base frame provided so that both ends thereof are alternately vertically movable with the mounting shaft as the fulcrum and configured so that a holding member is fitted to a fitting groove extending from the front end to the rear end from the rear end side and pressed on the front side; and a fixing member which can be suspended from a projection provided at the front end of the base frame and includes a bolt for fastening a pile inserted to a through-hole at the center. When the rear end side is pushed up by the holding member to pull out the pile connected to the front end side, the fixing member firmly holds the head of the pile. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pile remover that enables a pile driven into the ground to be easily pulled out manually.

  In large-scale civil engineering work, it is possible to pull out the pile using heavy machinery, etc., but in small cases, the pile is pulled out manually.

  As described in Patent Document 1, a pile driven into the ground or the like can be easily extracted, and when the pile is pulled out, the pile is less likely to break, contributing greatly to economic and resource saving. The device has also been released.

  However, the prior art has a drawback that the gripping member is simply in the shape of a square or a round, and the pile cannot be firmly fixed and is easily detached.

  Therefore, an object of the present invention is to provide a pile remover that firmly fixes the head of a pile driven into the ground and enables it to be easily pulled out by human power.

  In order to solve the above-described problems, the present invention provides an abutment having a mounting shaft on the upper portion and a fitting groove extending from the front end to the rear end, the both ends of which can be moved up and down alternately with the mounting shaft as a fulcrum. It consists of a base frame that fits the gripping member from the rear end side and holds it on the front end side, and a fixing member that has a bolt that can be hung on a protrusion provided on the front end of the base frame and tightens a pile that passes through a central through hole. When the rear end side is pushed down with the gripping member and the pile connected to the front end side is pulled out, the fixing member holds the head of the pile.

  In the present invention, the head of the pile is firmly fixed, so that it can be easily pulled out manually. Moreover, a fixing member and a holding member can be attached or detached, and can be replaced | exchanged according to the kind of pile.

It is an external view of the pile remover which concerns on Example 1 of this invention. It is a front view of the pile remover which concerns on Example 1 of this invention. It is a top view of the pile remover which concerns on Example 1 of this invention. It is a side view of the pile remover which concerns on Example 1 of this invention. It is a figure which shows the support of the pile remover which concerns on Example 1 of this invention. It is a figure which shows the base frame of the pile remover which concerns on Example 1 of this invention. It is a figure which shows the fixing member of the pile remover which concerns on Example 1 of this invention. It is a figure of the preparation stage which pulls out a pile with the pile remover which concerns on Example 1 of this invention. It is a figure of the state which pulled out the pile with the pile remover which concerns on Example 1 of this invention. It is sectional drawing of the pipe for excavation which concerns on Example 2 of this invention. It is a figure of the state which stabbed the excavation pipe which concerns on Example 2 of this invention on the ground. It is a figure of the condition which pulls out the pipe for excavation which concerns on Example 2 of this invention with the pile remover which concerns on Example 1. FIG.

  The pile remover according to the present invention has an abutment having a mounting shaft on the upper part and a gripping member placed in a fitting groove extending from the front end to the rear end, with both ends being movable up and down alternately with the mounting shaft as a fulcrum. It is composed of a base frame that is fitted from the end side and pressed on the front end side, and a fixing member that has a bolt that can be hung on a protrusion provided on the front end of the base frame and tightens a pile passing through a central through hole. The fixing member holds the head of the pile when the rear end side is pushed down and the pile connected to the front end side is pulled out.

  In addition, it is possible to replace a fixing member according to the thickness of a pile, and it is possible to replace a holding member according to the difficulty in removing a pile.

  In addition, when digging a hole for driving a pile to be pulled out with a pile remover, an inner cylinder is attached to the tip of the outer cylinder, and a step is provided on the inner wall so that soil does not stick to the inner wall of the outer cylinder even if it pierces the ground. An excavated pipe can be used.

  FIG. 1 is an external view of a pile remover according to Embodiment 1 of the present invention. FIG. 2 is a front view of the pile remover according to the first embodiment of the present invention. FIG. 3 is a plan view of the pile remover according to the first embodiment of the present invention. FIG. 4 is a side view of the pile remover according to the first embodiment of the present invention.

  The pile remover 1 is an instrument that pulls out the pile 6 using the principle of the lever, and connects the pile 6 as an action point with the abutment 2 as a fulcrum and the base frame 3 to which the gripping member 5 as a power point is attached. It consists of a fixing member 4.

  The abutment 2 suspends the left frame plate 2b and the right frame plate 2c from the base plate 2d laid on the ground 6a at a predetermined interval, and in the upper part, a rod-like mounting is provided between the left frame plate 2b and the right frame plate 2c. The mounting shaft 2a is arranged horizontally.

  Both ends of the base frame 3 can be swung up and down by placing a bearing 3e provided near the center of the lower surface of the main body on the mounting shaft 2a. The base frame 3 is gripped by a concave fitting groove 3a formed from the front end to the rear end. The member 5 can be fitted from the rear end side and the front end side can be fixed by the pressing plate 3b.

  The fixing member 4 can be hung by hanging a connector 4b on a projection 3d provided on an auxiliary plate 3c attached to the front end of the base frame 3, and a pile 6 passed through a central through hole 4a is tightened with a bolt 4c. be able to.

  When the holding member 5 is attached to the pile remover 1, the fixing member 4 is attached to the pile 6, and the holding member 5 pushes down the rear end side of the base frame 3 and pulls up the front end side, the fixing member 4 is attached to the pile 6. Since the head is firmly held, the pile 6 can be easily pulled out.

  FIG. 5 is a view illustrating a support for the pile remover according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating a base frame of the pile remover according to the first embodiment of the present invention. FIG. 7 is a diagram illustrating a fixing member of the pile remover according to the first embodiment of the present invention.

  As shown in FIG. 5, the abutment 2 includes a mounting shaft 2a, a left frame plate 2b, a right frame plate 2c, a base plate 2d, and the like.

  The mounting shaft 2a has a cylindrical bar such as metal facing sideways, held horizontally at an arbitrary height using the left frame plate 2b and the right frame plate 2c, and fixed at the left end to the left frame plate 2b. The right end is fixed to the right frame plate 2c.

  The left frame plate 2b is obtained by vertically suspending a plate material such as metal from the base plate 2d. Similarly, the right frame plate 2c is formed by vertically suspending a plate material such as metal from the base plate 2d. The left frame plate 2b and the right frame plate 2c may be connected by a back plate or the like.

  The base plate 2d is obtained by laying a plate material such as metal horizontally so that the pile remover 1 can be installed on the ground 6a. In addition, it has the effect which disperse | distributes the force applied to the ground 6a by making a grounding location planar.

  As shown in FIG. 6, the base frame 3 includes a fitting groove 3a, a pressing plate 3b, an auxiliary plate 3c, a protrusion 3d, and a bearing 3e. FIG. 6 is a view of the base frame 3 as viewed obliquely from below.

  The fitting groove 3a is a space formed by bending a left piece and a right piece of a plate material such as metal at a right angle to the same side to form a concave shape. The length from the left piece to the right piece is a width that can hold the gripping member 5.

  The pressing plate 3b is a plate in which a plate material such as metal is attached on the front end side of the base frame 3 so as to cover the upper side of the fitting groove 3a. When the gripping member 5 is stored in the fitting groove 3a, the tip of the gripping member 5 is passed between the fitting groove 3a and the pressing plate 3b and pressed so that the gripping member 5 does not come off.

  The auxiliary plate 3c is a plate material such as metal attached to the lower side of the base frame 3 on the front end side of the base frame 3, and a part of the auxiliary plate 3c projects forward. A protruding protrusion 3d extending upward is attached to the protruding portion so that the annular object can be locked.

  Near the center of the base frame 3, the bearing 3 e is mounted on the lower side of the base frame 3 so that the two vertical metal parts are bent so that the vertical portions face each other. 2a is sandwiched between them.

  As shown in FIG. 7, the fixing member 4 includes a through hole 4a, a connector 4b, a bolt 4c, a nut 4d, and the like.

  The through-hole 4a is formed by penetrating a rectangular or circular hole from the front surface to the back surface in the center of the fixing member 4 which is a plate material such as metal. The length of one side or the inner diameter of the through-hole 4a is larger than the outer diameter of the pile 6 so that the pile 6 can pass through.

  The connecting tool 4b is for connecting the base frame 3 and the fixing member 4 by forming the wire into an annular shape or a chain shape. The lower end is attached to the upper part of the fixing member 4, and the upper end is hung on the protrusion 3d. In addition, even if it makes the whole cyclic | annular, the upper end and lower end may be cyclic | annular, and a connecting member may be used between.

  The bolt 4c is attached to the lower part of the fixing member 4 so that the shaft body is horizontal with the fixing member 4, and is movable toward the center of the through hole 4a. A nut 4d is attached to the surface of the fixing member 4 and below the through hole 4a, and a bolt 4c is screwed into the nut 4d.

  Since it is only hooked on the projection 3d of the base frame 3 by the connector 4b, it can be easily replaced according to the shape of the pile 6, and the fixing member 4 having the through hole 4a through which the head of the pile 6 can pass can be attached. It ’s fine.

  FIG. 8: is a figure of the preparation stage which pulls out a pile with the pile remover which concerns on Example 1 of this invention. FIG. 9 is a view showing a state in which the pile is pulled out by the pile remover according to the first embodiment of the present invention.

  As shown in FIG. 8, first, the abutment 2 is installed on the ground 6a in a state where the pile 6 is stuck in the ground 6a. Then, the base frame 3 is placed on the abutment 2, and the gripping member 5 is mounted in the fitting groove 3 a of the base frame 3.

  The holding member 5 is a square member such as metal or wood, and has a size that can be fitted into the fitting groove 3a. The length and material of the gripping member 5 can be selected according to the difficulty in removing the pile 6 such as the hardness of the ground 6a and the depth of the pile 6.

  By fitting the bearing 3e of the base frame 3 on the mounting shaft 2a of the abutment 2, the both ends can be alternately rotated up and down without moving the lateral position of the base frame 3. Therefore, the front side of the base frame 3 is lowered and the pile 6 is fixed to the fixing member 4.

  First, the pile 6 is passed through the through-hole 4a of the fixing member 4 with the bolt 4c loosened, and then the bolt 6 is tightened and the pile 6 is pressed with the tip of the bolt 4c so that the pile 6 does not come off. Secure to.

  Next, as shown in FIG. 9, the holding member 5 is pushed down and the front side of the base frame 3 is lifted, whereby the pile 6 is pulled up together with the fixing member 4 suspended from the protrusion 3d of the base frame 3 by the connector 4b. .

  Since the front end of the gripping member 5 is fixed by the pressing plate 3b, the front side of the base frame 3 is lifted by pushing down the rear end of the gripping member 5 with the mounting shaft 2a of the abutment 2 as a fulcrum, and the pile 6 Can be extracted from the ground surface 6a.

  FIG. 10 is a cross-sectional view of a drilling pipe according to Embodiment 2 of the present invention. FIG. 11 is a diagram illustrating a state where the excavation pipe according to the second embodiment of the present invention is pierced into the ground. FIG. 12 is a diagram of a situation in which the excavation pipe according to the second embodiment of the present invention is pulled out by the pile remover according to the first embodiment.

  As shown in FIG. 10, the excavation pipe 7 is an instrument for digging a hole for driving the pile 6 pulled out by the pile remover 1, and includes an outer cylinder 7 a and an inner cylinder 7 b that penetrate from the upper side to the lower side.

  The outer cylinder 7a is a cylinder having a length necessary for digging a hole, and has a tip pointed inward so that resistance is reduced when digging the ground 6a. The inner cylinder 7b is a short cylinder attached to the tip of the outer cylinder 7a, and the tip has a sharp shape for driving into the ground 6a.

  The outer diameter of the inner cylinder 7b and the inner diameter of the outer cylinder 7a are the same size, and the inner cylinder 7b is fitted to the tip of the outer cylinder 7a, and is fixed with the tip of the inner cylinder 7b protruding from the tip of the outer cylinder 7a. . There is a step between the inner wall of the outer cylinder 7a and the inner wall of the inner cylinder 7b.

  As shown in FIG. 11, when the excavation pipe 7 is driven into the ground 6 a, the soil 6 b enters the excavation pipe 7. Since the soil 6b enters along the inner wall of the inner cylinder 7b, it is difficult to stick to the inner wall of the outer cylinder 7a which is wider than the inner wall of the inner cylinder 7b.

  When the soil 6b in the excavation pipe 7 is removed after the digging of the hole, the soil 6b accumulated in the outer cylinder 7a can be easily drained from the upper side, and the soil 6b adhered to the inner cylinder 7b. Is easy to scrape because the inner cylinder 7b itself is short.

  As shown in FIG. 12, the excavation pipe 7 driven to dig a hole can be pulled out from the ground 6 a using the pile remover 1 in the same manner as in the case of the pile 6.

DESCRIPTION OF SYMBOLS 1 Pile remover 2 Abutment 2a Mounting shaft 2b Left frame plate 2c Right frame plate 2d Base plate 3 Base frame 3a Insertion groove 3b Holding plate 3c Auxiliary plate 3d Protrusion 3e Bearing 4 Fixing member 4a Through hole 4b Connecting tool 4c Bolt 4d Nut 5 Holding member 6 Pile 6a Ground 6b Soil 7 Excavation pipe 7a Outer cylinder 7b Inner cylinder

Japanese Utility Model Publication No. 5-83040

Claims (4)

  A base having a mounting shaft on the top, and a base that can be moved up and down alternately with the mounting shaft as a fulcrum, and that the gripping member is fitted into the fitting groove extending from the front end to the rear end from the rear end side and pressed on the front end side. A frame and a fixing member provided with a bolt that can be hung on a protrusion provided at the front end of the base frame and tightens a pile passing through a central through-hole. The pile remover, wherein the fixing member holds the head of the pile when the connected pile is pulled out.   The pile remover according to claim 1, wherein the fixing member can be exchanged according to the thickness of the pile.   3. The pile remover according to claim 1 or 2, wherein the gripping member can be exchanged according to the difficulty in removing the pile.   When digging a hole for driving a pile to be pulled out by the pile remover according to any one of claims 1 to 3, the inner cylinder is attached to the tip of the outer cylinder, and a step is provided on the inner wall to pierce the ground. An excavation pipe characterized by preventing dirt from sticking to the inner wall of the outer cylinder.

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