JP3571573B2 - Buried pipe drawing device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drawing device for pulling out and removing a buried pipe which is laid as a gas pipe or a water pipe and is unnecessary and left after use.
[0002]
[Prior art]
For buried pipes such as gas pipes and water pipes, buried pipes that are no longer needed due to rebuilding of houses, etc. will cause various adverse effects if left unattended. In addition, it is specified that a filling material such as mortar is injected and filled into the hollow hole of the removal site so as not to cause land subsidence or the like.
[0003]
As this kind of drawing device, as shown in the prior art described in the above-mentioned JP-A-3-9188, generally, a clamping means for gripping a removal pipe to be extracted and a gripping force are applied to the clamping means. A hydraulic cylinder means for applying and a hydraulic cylinder means for retraction for applying a pulling force to the clamp means are provided.
[0004]
Here, the apparatus and method used for extracting the unnecessary buried pipe will be described as follows.
In FIG. 4, reference numeral 1 denotes a shaft for pulling out the unnecessary buried pipe 2.
Inside the shaft 1, a vise 3 having a reaction force receiving base 3A on its bottom surface is installed.
The vise 3 is provided with a lever lock 4 having a hydraulic jack structure, which is a driving member for pulling the unnecessary buried pipe 2 in the pulling direction, and is unnecessary by swinging a handle 4A provided on the lever lock 4. The chain 5 hooked between the buried pipe 2 is wound up, and the unnecessary buried pipe 2 is pulled.
The unneeded buried pipe 2 to be pulled out is cut off by a predetermined length exposed in the pier 1, and the chain 5 is again hooked on the end of the unneeded buried pipe 2 located underground. By repeating the above operation, the entire length of the buried section is extracted.
[0005]
[Problems to be solved by the invention]
However, the drawing device having the above configuration has the following problems. Since the lever lock 4 is installed corresponding to the buried position of the unnecessary buried pipe 2 to be extracted, the pier 1 is excavated in a road section or a private area. However, the pier 1 becomes a considerably large pit in order to secure a handle operation area for the reaction force receiving base 3 and the lever lock 4 in a space including the bottom thereof. For this reason, the equipment and time required for the excavation work are lengthened, and the work cost is increased. In addition, when the excavated area is large, it is not possible to secure a necessary excavated area when another buried object is located near the excavated place. As a result, there is a possibility that the installation of the buried pipe extraction device cannot be performed. Moreover, since the reaction force receiving base 3 and the lever lock 4 are relatively large, it is not easy to carry them in and out of the shaft 1, and the labor burden on the worker increases.
[0006]
An object of the present invention is to avoid the increase in the work cost required for excavation by preventing the excavation area from being enlarged, in view of the above-mentioned problems in the conventional buried pipe extraction device, and to prevent the installation from being impossible and to prevent the installation and unloading. It is an object of the present invention to provide a buried pipe drawing device having a configuration capable of preventing an increase in labor burden of the buried pipe.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 is a buried pipe extracting device for extracting and removing unnecessary pipes buried in the ground, wherein the extracting device is a vertical pipe for exposing the unnecessary pipes. A reaction plate provided on the reaction inner wall, and a jack device provided on the reaction plate to move the unnecessary pipe in a direction in which the unnecessary tube is pulled out. A gripping member that can bite into the outer peripheral surface of the unnecessary pipe is provided, and the pressure plate is configured to adjust the relative position of the pair of plate members so that the inner edge of the cutout portion allows the unnecessary pipe to be embedded. It is characterized by surrounding the outer peripheral surface .
[0008]
According to a second aspect of the present invention, in the buried pipe drawing device according to the first aspect,
The gripping member is tiltable with respect to the jack device or is supported by being tilted at a predetermined angle in advance, has an opening through which the embedding unnecessary pipe can be inserted, and an outer peripheral surface of the embedding unnecessary pipe inserted through the opening. In this case, the burial unnecessary tube is pulled in the pulling-out direction in conjunction with the movement of the jack device.
[0009]
According to a third aspect of the present invention, in the buried pipe drawing device of the first or second aspect, the jack device is moved by using a motor as a drive source.
[0010]
[Action]
According to the first to third aspects of the present invention, the reaction plate is provided not on the bottom of the upright but on the inner wall, and the reaction plate is provided with the jack device movable in the pulling-out direction of the unnecessary pipe. The excavation area of the pier can be reduced. Further, when the jack device is moved by driving the motor, the gripping member contacts the unnecessary pipe and bites into the outer peripheral surface of the unnecessary pipe while dragging the outer peripheral surface of the unnecessary pipe, so that the pulling-out operation can be performed without requiring a special pulling structure. Further, since the pressure plate has a structure in which the outer peripheral surface of the burial unnecessary tube is surrounded by the inner edge of the cutout portion by adjusting the relative position of the pair of plate members, it can constitute a guide portion at the time of drawing. it can.
[0011]
【Example】
Hereinafter, the present invention will be described in detail with reference to illustrated embodiments.
FIG. 1 is a schematic diagram for explaining a main part of a buried pipe pulling device according to an embodiment of the present invention. In FIG. 1, a buried pipe pulling device 10 is similar to the case shown in FIG. 1 ′).
That is, a flat reaction plate 11 is provided on the inner wall of the pier 1 ′, and the jack device 12 is provided on the reaction plate 11.
In the case of the present embodiment, the reaction force plate 11 includes a pair of plate members 11A and 11B that can move in a relative direction, as shown in FIG. Notch portions 11A1 and 11B1 each forming a rhombus are formed.
The plate members 11A and 11B change the size of the rhombus by being moved in the relative direction so as to match the diameter of the unnecessary pipe inserted therein, and surround the outer peripheral surface of the unnecessary pipe. Thereby, an unnecessary pipe to be drawn can be guided.
[0012]
The jack device 12 is disposed and fixed above the insertion position of the unnecessary buried pipe in the reaction force plate 11.
The jack device 12 includes a sliding rod 12B slidably supported by a main body 12A, and a rack (not shown) is formed on the sliding rod 12B along the sliding direction. A pinion (not shown) meshes with the rack via a speed reduction mechanism.
As shown in FIG. 1, the pinion can rotate by engaging with the output shaft of an electric motor 13 serving as a drive source, and reciprocates the sliding rod 12B in the sliding direction according to the amount and direction of rotation. It has become.
[0013]
A gripping member 14 for gripping the burial unnecessary tube 2 is provided at the tip of the sliding rod 12B.
The gripping member 14 is supported to be tiltable with respect to the sliding rod 12B or to be tilted at a predetermined angle in advance. In other words, when supported in a tiltable manner, the gripping member 14 is constituted by a swingable plate member whose base end is the side facing the sliding rod 12B, and the burial unnecessary tube 2 is inserted into the free end side. Opening 14A (see FIG. 2).
For this reason, the gripping member 14 is in a state of being suspended and supported on the side facing the sliding rod 12B as a fulcrum, and when the burying unnecessary tube 2 is moved in the pulling-out direction, the outer peripheral surface of the burying unnecessary tube 2 is held by the gripping member. By contacting the inner edge of the opening on the side of the 14, the free end side of the gripping member 14 is pulled and tilted on the outer peripheral surface of the burial unnecessary tube 2. As a result, as shown by a symbol P in FIG. 3, a part of the outer peripheral surface of the buried unnecessary pipe 2 bites into the inner edge of the opening at a position opposite to the axis of the buried unnecessary pipe 2. Thereby, when the sliding rod 12B moves in the pulling-out direction indicated by the arrow in FIG. 3, the inner edge of the opening of the gripping member 14 is bitten and is gripped, and the burying unnecessary tube 2 is pulled and moved in the pulling-out direction.
[0014]
Further, when the jack device 12 is tilted at a predetermined angle in advance, the position of the jack device 12 is adjusted in the vertical direction so that the relative position of the inner edge of the opening comes into contact with the burial unnecessary tube 2. Thereby, when the sliding rod 12B of the jack device 12 is moved in the pulling-out direction of the burial unnecessary tube 2, the relative position of the inner edge of the opening is moved into the burying unnecessary tube 2 while the burying unnecessary tube 2 is moved in the pulling direction. Can be.
[0015]
Since the present embodiment is configured as described above, the pier 1 'is excavated at the position where the buried unnecessary pipe 2 is removed, and the inner wall on the side where the end of the buried unnecessary pipe 2 is exposed inside the pier 1'. The reaction force plate 11 is installed at the bottom. For this reason, the excavation area of the shaft 1 ′ can be smaller than the case where the reaction force plate 11 is installed at the bottom because the reaction plate 11 is installed on the inner wall instead of the bottom of the shaft 1 ′.
The reaction force plate 11 surrounds the outer peripheral surface of the buried unnecessary tube 2 by the inner edges of the notches 11A1 and 11B1 by adjusting the relative positions of the pair of opposed plate members 11A and 11B, and constitutes a guide portion for pulling out. I do.
When the reaction plate 11 is installed, the jack device 12 is attached thereto. When the jack device 12 is attached, the opening 14A of the gripping member 14 attached to the sliding rod 12B mounted on the jack device 12 is at a position where the burial unnecessary tube 2 can be inserted, and the inner edge of the opening is the burial unnecessary tube. 2 so as to be in contact with the outer peripheral surface.
[0016]
When the electric motor 13 is connected to the jack device 12 and the electric motor 13 rotates in a direction to move the sliding rod 12B in the pulling-out direction of the buried unnecessary pipe 2, the sliding rod 12B is directed inward of the shaft 1 '. Moving. Thereby, the burial unnecessary tube 2 that is in contact with the inner edge of the opening of the gripping member 14 is pulled by the gripping member 14 that moves together with the sliding rod 12B and pulled out.
[0017]
The moving stroke of the sliding rod 12B is about 15 cm in the present embodiment, and when the buried unnecessary pipe 2 protrudes into the vertical shaft 1 ′ in that stroke, the buried unnecessary pipe 2 is cut off, and again the gripping member 14 is used. The burying unnecessary pipe 2 is grasped again, and the drawing operation is repeated. In this way, the jack device 12 and the shame member 14, which are driven by the electric motor 13 and are relatively small, need only be carried in and out of the shaft 1 '. The loading and unloading of the pulling-out device 10 is easier than in the case of using a hydraulic jack that is likely to be damaged.
[0018]
According to the present embodiment, since the jack device 12 is driven by the electric motor 13, it is not necessary to perform a pull-out operation by repeatedly operating the handle like a conventional hydraulic jack. Can be reduced.
[0019]
【The invention's effect】
According to the first to third aspects of the present invention, by adjusting the relative position of the pair of plate members, the structural reaction force plate surrounding the outer peripheral surface of the burial unnecessary tube by the inner edge of the notch portion is not the bottom portion but the inner wall. And a jack device that is movable in the direction of pulling out unnecessary pipes at the reaction plate is provided, so that unnecessary pipes can be guided by the reaction plate at the time of pulling out, and The excavation area of the pit can be reduced, thereby preventing the increase in the work cost required for the excavation work, and securing the necessary excavation area even when other buried objects are located near the excavation site Easier to do. As a result, it is possible to reduce the labor required for the excavation work and the loading / unloading of the pulling-out device, and to easily and conveniently perform the pulling-out work.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a drawing work site in which an apparatus for drawing a buried pipe according to an embodiment of the present invention is used.
FIG. 2 is a schematic perspective view for explaining a configuration of a reaction force plate used in the drawing device shown in FIG.
FIG. 3 is a schematic diagram for explaining an operation of a gripping member used in the drawing device shown in FIG. 1;
FIG. 4 is a schematic diagram for explaining a configuration of an apparatus used for a conventional drawing operation.
[Explanation of symbols]
Reference Signs List 1 'vertical shaft 2 burial unnecessary pipe 10 pull-out device 11 reaction force plates 11A, 11B plate members 11A1, 11B1 notch portion for burying unnecessary tube insertion formed in plate member 12 jack device 12A sliding rod 13 drive unit of jack device Electric motor 14 serving as a good gripping member 14A Main body 14B Opening P Position where the inner edge of the opening bites into the outer peripheral surface of the burial unnecessary pipe

Claims (3)

What is claimed is: 1. A buried pipe extracting device for extracting and removing unnecessary pipes buried underground, comprising: a reaction plate provided on a vertical inner wall for exposing the unnecessary pipes; A jack device provided on a plate for moving the unnecessary burial tube in the pull-out direction thereof, wherein the jack device cuts into the outer peripheral surface of the unnecessary burial tube when the unnecessary burial tube is moved in the pull-out direction. it gripping member is provided which can,
The above-mentioned pressure plate adjusts a relative position of a pair of plate members, and surrounds an outer peripheral surface of the above-mentioned burying unnecessary pipe by an inner edge of a notch . 2. The buried pipe pulling device according to claim 1, wherein the gripping member has an opening through which the burying unnecessary pipe can be inserted, the holding member being tiltable with respect to the jack device or supported at a predetermined angle in advance. A buried pipe pulling device characterized in that it digs into a relative position on the outer peripheral surface of the buried unnecessary pipe inserted into the portion and moves the buried unnecessary pipe in the pulling-out direction in conjunction with the movement of the jack device. 3. The buried pipe drawing device according to claim 1, wherein the jack device moves by using a motor as a drive source.

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