JP3547312B2 - Pile standing method and vehicle with pile standing mechanism used for the method - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pile erecting method for efficiently erecting a large number of piles and a vehicle with a pile erecting mechanism used in the method.
[0002]
[Prior art]
Conventionally, for example, when forming a boundary fence or a no-entry fence, an operator drives a large number of piles into the ground at predetermined intervals with a hammer or the like and stands up, and also places an iron wire or wire mesh between the piles. Stretching is being done.
[0003]
[Problems to be solved by the invention]
In the above-described conventional configuration, if the length of the fence laying is increased to several hundreds or thousands of meters, it takes a long time to erect a large number of piles, and the worker is forced to work excessively. Further, when the height of the fence exceeds 1 m, the height of the pile is too high, so that a work aid such as a stepping board is required. Further, when the standing position of the pile is mistaken, it is extremely troublesome to pull out the pile, strike the pile again, and correct it.
[0004]
The present invention has been made in view of the above-described problems, and enables a pile to be efficiently erected without forcing an operator to perform excessive labor, and easily corrects a erroneous erection when the erected position is incorrect. An object of the present invention is to provide a pile erection method that can be performed and a vehicle with a pile erection mechanism used for the method.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is provided with a pile holding tool on a vehicle body provided with a body lifting jack, and a pile is mounted on the pile holding tool in a state where the vehicle body is lifted by the jack. By gripping and eliminating lifting of the vehicle body by the jack, the tip of the pile is pressed into the ground with the weight of the vehicle body, and the pile is erected on the ground.
[0006]
According to the above configuration, the tip of the pile is pressed into the ground using the weight of the vehicle body, so that the pile can be efficiently erected without imposing excessive labor on the worker. Can be. In addition, even after the pile is erected, if the erected position of the stake is incorrect, the erected position of the stake can be immediately corrected by lifting the vehicle body with a jack and pulling out the tip of the stake from the ground. it can.
[0007]
The invention according to claim 2 has a pile gripping tool attached to a vehicle body provided with a body lifting jack, and the pile gripping tool presses down on a pile fitting frame and a pile fitted in the pile fitting frame. A pushing device for pressing the board to grip the pile, and fitting the pile into the pile fitting frame in a state where the vehicle body is lifted by the jack, and pressing the holding plate with the pushing device by the pushing device. By pressing against the pile in the frame, lifting the body by the jack is eliminated, the tip of the pile is pressed into the ground with the weight of the body, and the pile is erected on the ground. I have.
[0008]
According to the above configuration, the pile can be easily fixed to the vehicle body only by inserting the pile into the pile insertion frame of the pile gripper and pressing the holding plate against the pile in the pile insertion frame by the pressing device. .
[0009]
According to a third aspect of the present invention, in the second aspect of the invention, a plurality of the pile grippers are attached to a support frame attached to a rear surface of the vehicle body at predetermined intervals along a direction orthogonal to a vehicle moving direction. It is characterized by being done.
[0010]
According to the above configuration, a plurality of piles can be erected in a plurality of rows along the vehicle body moving direction.
According to a fourth aspect of the present invention, in the second aspect of the present invention, a plurality of the pile grippers are attached to a support frame attached to a side surface of the vehicle body at predetermined intervals along a vehicle moving direction. Features.
[0011]
According to the above configuration, a plurality of piles can be erected in a line along the moving direction of the vehicle body.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show a state immediately before a pile A is erected on the ground G by a vehicle with a pile erecting mechanism according to an embodiment of the present invention. A jack 2 for lifting the vehicle body is provided, and a pile erecting mechanism 3 is provided on a rear surface of the vehicle body 1. Reference numeral 4 denotes a hydraulic unit provided on the carrier 1a of the vehicle body 1, and reference numeral 5 denotes a hydraulic crane used to change the arrangement position of the pile erecting mechanism 3 to a rear position or a side position of the vehicle body 1.
[0013]
Each of the jacks 2 is composed of a hydraulic cylinder, and by extending its leg 2a (see the solid line in FIG. 1), the vehicle body 1 is lifted with a stroke greater than the press-fitting depth (H) at the tip of the pile A. .
[0014]
The pile erecting mechanism 3 includes a support frame 7 attached to the rear surface of the vehicle body 1, and a plurality of (three in this embodiment) a predetermined interval R in the support frame 7 along a direction orthogonal to the vehicle moving direction a. ) The attached pile gripping tool 8 is provided.
[0015]
The support frame 7 includes a base frame portion 7a fastened to a rear surface of the vehicle body 1 with a fastener 10 such as a bolt, and a horizontal beam 7c integrally connected to the base frame portion 7a via an intermediate frame portion 7b. The horizontal beam 7c is provided with a large number of upper and lower connecting holes 11 at predetermined intervals r along the longitudinal direction thereof.
[0016]
The pile gripping tool 8 includes a substantially U-shaped pile fitting frame 13 which is fixed to the horizontal beam 7c through a suitable connecting hole 11 by a fastener 12 such as a bolt or a nut, and the pile fitting frame 13. There is a pressing device 15 composed of a hydraulic cylinder for holding the pile A by pressing the arc surface 14 a of the holding plate 14 against the pile A fitted into the pile 13, and a backing plate 16 fixed to the inner surface of the pile fitting frame 13. After the stake A is inserted into the stake insertion frame 13, the pushing device 15 is extended and driven, whereby the holding plate 14 and the contact plate 16 grip the stake A, and the pushing device 15 is driven to reduce. Accordingly, the holding plate 14 is separated from the pile A, and the grip of the pile A is released.
[0017]
Further, the fitting entrance 13a of the pile fitting frame 13 is directed rearward, and after the pile A is erected, the pile gripping tool 8 can be detached from the pile A only by moving the vehicle forward.
[0018]
4 (a), the vehicle is moved to a predetermined position and stopped, and then the jack 2 is moved as shown in FIG. 4 (b). The leg 2a is extended to drive the vehicle body 1 up, the pile A is inserted into the pile insertion frame 13 of each pile gripper 8, and the pressing device 15 is extended to drive the pressing plate 14 against the pile A. Then, each pile gripper 8 grips the pile A, and the leg 2b of the jack 2 is reduced and driven to eliminate lifting of the vehicle body 1 as shown in FIG. The tip of the pile A is pressed into the ground.
[0019]
Here, when the weight of the vehicle is about 2000 kg for a small truck and about 7000 kg for a medium-sized truck, the diameter of the pile A is 5 to 10 cm, and the supporting force of the ground G is 100 t per 1 m2, the pile diameter is 5 cm. The force P required for press-fitting the pile A is expressed by equation (1), and the force P required for press-fitting the pile A when the pile diameter is 10 cm is expressed by equation (2).
P = (π / 4) × 5 2 × (100000/100 2) = 196kg · f ... (1) P = (π / 4) × 10 2 × (100000/100 2) = 785kg · f ... (2)
As described above, since the force P required for press-fitting the pile A is considerably smaller than the weight of the vehicle, the pile A can be surely pressed into the ground by the weight of the vehicle.
[0020]
Next, after the pressing device 15 is reduced and driven to separate the pressing plate 14 from the pile A, the vehicle is advanced, and the pile gripping tool 8 is detached from the pile A. Then, as shown in FIG. 5, after the vehicle is advanced by one pitch P, the above operation may be repeated. Thereby, the plurality of piles A can be erected in a plurality of rows along the vehicle body movement direction a.
[0021]
According to the above configuration, the tip of the pile A is pressed into the ground by using the weight of the vehicle body 1, so that the pile A can be efficiently erected without forcing the worker to work excessively. It can be performed. Further, even if the standing position of the pile A is mistaken after the standing of the pile A, the standing position of the pile A is lifted by lifting the vehicle body 1 with the jack 2 and pulling out the tip of the pile A from the ground. Can be modified immediately.
[0022]
In the above-described embodiment, the support frame 7 is attached to the rear surface of the vehicle body 1. However, the present invention is not limited to this. As shown in FIG. The fitting opening 13a of the frame 13 may be directed rearward.
[0023]
According to the above configuration, the plurality of piles A can be erected in one row along the vehicle body movement direction a in substantially the same procedure as in the above-described embodiment.
In the above embodiment, the three piles A are erected at predetermined intervals R. However, the present invention is not limited to this, and one or two or four or more pile grippers 8 may be provided. By fixing to the support frame 7, the piles A can be erected on the ground G by the number of the pile gripping tools 8. Further, the interval R between the piles A can be adjusted by the interval r between the connection holes 11.
[0024]
【The invention's effect】
According to the first aspect of the present invention, since the tip of the pile is pressed into the ground using the weight of the vehicle body, the pile is efficiently erected without forcing the worker to perform excessive labor. Work can be done. In addition, even after the pile is erected, if the erected position of the stake is incorrect, the erected position of the stake can be immediately corrected by lifting the vehicle body with a jack and pulling out the tip of the stake from the ground. it can.
[0025]
According to the second aspect of the present invention, the pile is easily fixed to the vehicle body simply by inserting the pile into the pile insertion frame of the pile gripper and pressing the holding plate against the pile in the pile insertion frame by the pressing device. can do.
[0026]
According to the third aspect of the present invention, a plurality of piles can be erected in a plurality of rows along the vehicle body moving direction.
According to the fourth aspect of the present invention, a plurality of piles can be erected in a row along the vehicle body moving direction.
[Brief description of the drawings]
FIG. 1 is a side view of a vehicle with a pile standing mechanism according to an embodiment of the present invention.
FIG. 2 is a rear view of the same.
FIG. 3 is a plan view of the main part.
4 (a) to 4 (c) are schematic side views showing a pile erecting procedure.
FIG. 5 is a schematic plan view of the same.
FIG. 6 is a schematic plan view showing the modification.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 2 Jack for body lifting 3 Pile standing mechanism 7 Support frame 8 Pile gripper 13 Pile insertion frame 14 Pressing plate 15 Pressing device A Pile a Vehicle moving direction

Claims (4)

A pile gripper is provided on the vehicle body provided with the body lifting jack, and the pile is gripped by the pile gripper in a state where the vehicle body is lifted by the jack, thereby eliminating lifting of the vehicle body by the jack. A pile erecting method, wherein a tip of the pile is pressed into the ground with the weight of a vehicle body, and the pile is erected on the ground. It has a pile gripping tool attached to a vehicle body equipped with a body lifting jack, and the pile gripping tool presses a holding plate against a pile fitting frame and a pile fitted into the pile fitting frame to grip the pile. Having a pressing device for carrying out, the pile is fitted into the pile fitting frame in a state where the vehicle body is lifted by the jack, and a pressing plate is pressed against the pile in the pile fitting frame by the pressing device, A vehicle with a pile erecting mechanism, characterized in that the lifting of a vehicle body by a jack is eliminated so that the tip of the pile is pressed into the ground with the weight of the vehicle body and the pile is erected on the ground. The pile erecting mechanism according to claim 2, wherein a plurality of the pile grippers are attached to a support frame attached to a rear surface of the vehicle body at predetermined intervals along a direction orthogonal to a vehicle moving direction. vehicle. The vehicle with a pile erecting mechanism according to claim 2, wherein a plurality of the pile grippers are mounted on a support frame mounted on a side surface of the vehicle body at predetermined intervals along a vehicle moving direction.

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