JP3560704B2 - Positioning device for buried pipe - Google Patents

Description

[0001]
[Industrial applications]
INDUSTRIAL APPLICABILITY The present invention is advantageous in that a position regulating device for a buried pipe, specifically, for example, a concrete fume pipe or a synthetic resin pipe buried for draining sewage is used for setting horizontal and serial arrangement positions and holding the set position at the time of burial. The present invention relates to a position control tool for a buried pipe.
[0002]
[Prior art]
Conventionally, when burying large-diameter fume pipes or synthetic resin pipes (hereinafter referred to as pipes) such as sewer pipes and water distribution pipes, the ground of the excavated trench is usually compacted, and then the rubble stone is laid and the pipes are laid. Several sleepers or saddles that support the body are laid at intervals and with the surface of each sleeper horizontal, and then the buried pipe is suspended over the sleepers and placed in the ditch. Connect to the tube. Then, using a measuring instrument such as a spirit level or a water thread, perform the work of positioning the pipe vertically (leveling out) and positioning the pipe horizontally (centering), and correct the pipe as designed. The work is then fixed to the position, and then the earth and sand are charged to fill the trench and the pipe is buried in the soil.
[0003]
In such an embedding operation, when one of the horizontal positioning and the centering (especially in the serial and linear directions) of the pipe positioning operation described above is inaccurate, the joining accuracy with the previous pipe becomes poor and the water resistance is lowered. Therefore, the work of positioning the pipe and the work of fixing the pipe in the immovable state in the positioned state are the most important works when embedding the pipe.
[0004]
[Problems to be solved by the invention]
However, the horizontal positioning of the horizontal positioning and centering measurement described above is relatively easy to position the pipe body in the horizontal direction because each sleeper is laid in advance at the bottom of the groove with the surface thereof being horizontal. However, even if the pipe is properly positioned by centering after horizontal positioning, it is difficult to secure the position in an immovable state despite the introduction of earth and sand. Countermeasures such as mounting a stay rod between the wall surface and the side of the pipe, or inserting a wedge made of hard wood into the gap between the pipe and the sleeper to maintain the centered position Has been taken.
[0005]
However, the means for fixing the tubular body by the stay rod not only complicates the work but also requires a high level of technology, and furthermore, the work of charging the earth and sand after the completion of the fixing work must be performed very carefully. Even if the wedge fixing means is used in combination, the conventional wedge of this type has both a slope and a bottom surface which are smooth. However, since the earth and sand intervene on the slope of the wedge and the surface of the pipe body, the position of the wedge becomes unstable, and sometimes the wedge moves backward when the earth and sand is charged, and the wedge function cannot be performed. Therefore, in the conventional pipe positioning and fixing means in which such unstable elements are latent, it is necessary to pay close attention to the work of charging the earth and sand after the fixing work is completed. Even if it is performed, it is not possible to eliminate anxiety about whether or not the burying posture of the pipe body after burying is correctly maintained. Also, wooden stay rods and wedges are corroded and must be removed at the final stage according to the conditions at the construction site.
[0006]
The present invention can accurately maintain the state of the positioned tubular body, does not retract the wedge member even when subjected to an external force such as the injection of earth and sand, and a position restricting tool for a buried tubular body that is useful for eliminating the above-mentioned uneasy element. In particular, it is an object of the present invention to provide a buried pipe position regulating tool which is convenient for positioning a lightweight buried pipe body made of synthetic resin.
[0007]
[Means for Solving the Problems]
The present invention provides a position control device for a buried pipe, a base member having a surface provided with ridges and valleys on a pillow, and placing the tube on the base member, and a ridge that meshes with the ridges and valleys of the base member. The object has been solved by engaging a wedge member provided with irregularities on the bottom surface on the base member to support the tubular body. That position restricting mechanism of the buried pipe of the present invention, a plate-shaped base member is placed on the pillow for supporting the buried pipe body buried pipe is placed in a state of being opposed to the base member on the It consists of a pair of wedge members that support the lower outer peripheral surface of the body from both sides to prevent displacement of the tube , and on the top surface of the base member and the bottom portion of the wedge member, in the axial direction of the buried tube, A ridge and a groove are provided so that the valleys fit together. The groove and the ridge of the wedge member are fitted to the ridge and groove of the base member in a state in which the groove cannot be retracted. In addition, the surface of the support slope portion on the lower peripheral surface of the tube of the wedge member forms an arc surface corresponding to the outer radius of the tube, and the surface of the support slope portion extends in the axial direction of the tube and is a buried tube. A large number of mountain-shaped grooves for retaining earth and sand adhered to the surface of the steel are formed.
[0008]
Embodiment
In the present invention, as shown in FIG. 2, the pipe 20 determines the position of the pipe 20 which is placed and buried on the pillow 21 laid on the bottom of the excavated groove (not shown). And it is used to prevent the displacement of the pipe 20 at the time of sediment injection after the installation of the pipe 20, and a basic embodiment of the buried pipe restrictor of the present invention is as follows. As shown in FIGS. 1 and 2, a regulating device for a buried pipe is provided on a pillow 21 supporting the buried pipe 20 in a rectangular shape laid in a direction orthogonal to the axial direction of the pipe 20. It comprises a base member 1 and a wedge member 2 placed on the base member 1 and abutting on the lower peripheral surfaces on both sides of the buried pipe 20, and the upper surface of the base member 1 and the bottom surface 2A of the wedge member 2 In the axial direction of the buried pipe body 20, triangular mountain-shaped ridges 3, 4 and 4 of the same pitch where the peaks and valleys are fitted to each other And the grooves 5 and 6 are formed, and more desirably, the surface of the support slope 2B on the outer peripheral surface of the lower part of the tube 20 of the wedge member 2 is formed into a concave curved surface of an arc corresponding to 1/2 of the outer diameter of the tube 20. On the surface of the support slope portion 2B, a number of chevron grooves 7 extending in the axial direction of the tube 20 are formed, and the base member 1 is laid on the pillow 21 as shown in FIG. The wedge members 2 and 2 are disposed thereon at positions supporting the lower outer peripheral surface of the tubular body 20 from both sides, and the valleys and ridges of the wedge member 2 are fitted to the ridges and valleys of the base member 1. The lower peripheral surface of the tubular body 20 is supported on the two wedge members 2 so that the tubular body 20 can be positioned. In addition, the upper surface of the base member 1 is formed with irregularities of peaks and valleys in the axial direction of the tube 20 so that centering can be easily performed.
[0009]
The base member 1 may be formed with ridges 3 and grooves 5 having a waveform of a constant pitch over the entire upper surface of the base member 1 as shown in FIG. 1, but as shown in FIG. The ridges 3 and the grooves 5 having a constant pitch are formed on both sides of the base member 1. Further, both ends are formed as flat surfaces 1B, and the flat surface 1B is provided with nail holes 8, so that the determined position of the base member 1 is determined. It is also a preferred embodiment of the base member 1 that it can be fixed by nailing. In the case of FIGS. 3 and 4, a center line O may be provided at the center so that the centering operation can be easily performed.
[0010]
When the ridges 4 and the grooves 6 having a constant pitch are continuously formed on the lower surface of the wedge member 2 as shown in FIG. 1, the ridges 3 and the grooves 5 having the waveform of the base member 1 are not necessarily continuous. For example, as shown in FIG. 4, some flat portions 1 </ b> C with a plurality of protrusions 3 removed are provided between several protrusions 3 and grooves 5 as shown in FIG. 4. Also, although not shown in the drawing, the present invention can be satisfied even if some of the ridges 4 and the grooves 6 on the wedge member 2 side are removed.
[0011]
It is desirable that the surface of the support slope portion 2B of the wedge member 2 be a concave curved surface having substantially a half arc of the outer diameter of the tube along the outer peripheral surface of the buried tube 20. If a large number of chevron grooves 7 extending in the axial direction of the tubular body 20 are formed on the surface of the support slope 2B as shown in FIG. 1, fine earth and sand adhere to the surface of the tubular body 20. However, the sediment can be retained in the groove 7, and the phenomenon that the sand 20 is caught between the surface of the support slope 1 </ b> B and the tube 20 and the support form of the tube 20 becomes unstable can be eliminated, and the tube 20 can be removed. It can be properly supported. When the support slope 2B of the wedge member 2 is formed into a concave curved surface having a half arc of the outer diameter of the tube, the applicable tube is formed on the front side of the rear wall 2C of the wedge member 2 when the wedge member 2 is formed. If concave and convex numbers are simultaneously formed on the numerals indicating the outer diameter of the slab, for example, 200, 300, 400, etc., the wedge member of the arc-shaped support slope portion 2B adapted to the outer diameter of the buried pipe 20 2 can be conveniently identified.
[0012]
The pitch of the ridges 3 and 4 formed on the surface portion of the base member 1 and the bottom portion 2A of the wedge member 2 and the height (groove depth) of the ridges are not particularly limited. It is practical that the pitch is about 2 to 5 mm and the depth of the groove is about 2 to 6 mm. Also, the ridges 3 and 4 and the grooves 5 formed on the bottom surface 2A of the base member 1 and the wedge member 2 are formed. The shape of 6 may be a simple isosceles triangular shape, but as shown in FIG. 5, it is a preferred embodiment to form a sawtooth shape on the base member 1 so that the wedge member 2 cannot be moved backward. is there.
[0013]
The wedge member 2 has a bottom surface 2A having a groove 6 and a protrusion 4 fitted into the corrugated protrusion 3 and groove 5 of the base member 1, and a support slope 2B of the buried pipe 20. There is no particular limitation as long as it is provided. For example, as shown in FIG. 6, a substantially chair shape having a front end face 2 </ b> D by cutting the end portions of the bottom face 2 </ b> A and the support slope 2 </ b> B may be used. . As described above, in the substantially chair-shaped wedge member 2 having the front end face 2D with the front end portion cut, even if the earth and sand exist inside the delta gap between the pillow body 21 and the pipe body 20, the wedge member 2 is related to the earth and sand. There is an advantage that the wedge member 2 can be set at an appropriate position without any need.
[0014]
It is preferable that the control tool for a buried pipe of the present invention is manufactured by molding a plastic having excellent corrosion resistance by molding, and it is more preferable to use a recycled material of waste plastic from the viewpoint of resource saving. desirable. When the wedge member 2 is formed, if the cavity 9 is formed inside the bottom surface 2A, the support slope 2B, the rear wall 2C, and the top surface 2E, the difference in cooling time of each part after the molding is reduced. This serves to prevent the product, that is, the wedge member 2 from being distorted, and to save material costs.
[0015]
【Example】
FIG. 1 shows an embodiment of the present invention, in which a base member 1 is formed of a vinyl chloride resin, and is a rectangular plate having a length of 360 mm, a width of 60 mm, and an apparent thickness of 5 mm. In the width direction of the surface, mountain-shaped irregularities formed of isosceles triangular ridges 3 and grooves 5 having a height (depth of grooves) of 2.5 mm at a pitch of 5 mm are formed.
[0016]
The pair of wedge members 2 and 2 are formed by using a recycled material of waste plastic, and have a concave curved surface having a length of 120 mm, a width of 58 mm, a height of the rear wall 2C of 60 mm, and an arc radius of 150 mm on the upper surface. The supporting slope 2B having an effective length of 100 mm is provided. Inside the bottom 2A, the supporting slope 2B, the rear wall 2C, and the top surface 2E, from the rear of the bottom 2A toward the intermediate position of the supporting slope 2B. The side surface in which the hollow portion 9 having the reinforcing wall 10 extending obliquely is formed has a substantially shoe-like shape, and the width direction of the bottom portion 2A has the same shape as the chevron-shaped unevenness of the base member 1. A ridge 4 and a groove 6 are provided in the width direction where the ridge and the valley interlock with each other, and a triangular groove having a pitch of 2.5 mm and a depth of 1 mm is formed on the surface of the support slope 2B. 7 buried pipe having an outer diameter of 300 mm It is configured to be applied to zero.
[0017]
FIG. 2 shows a state in which the base member 1 and the wedge members 2 are used. That is, a plurality of pillows 21 are laid at intervals at the bottom of a groove (not shown) formed by excavation so that the upper surfaces thereof are respectively horizontal, and fixed in an immovable state with chestnut or crushed stone. The base member is placed on the pillow 21 and the wedge members 2 and 2 are arranged on both sides of the base member 1. Subsequently, the drainage pipe 20 made of vinyl chloride having an outer diameter of 300 mm is attached to the wedge member 2. After being placed between the two wedge members 2, 2, the wedge members 2, 2 are positioned so that the surfaces of the supporting slopes 2B of the wedge members 2, 2 are in contact with the lower peripheral surface of the tube 20, and the base member is positioned. 1, the groove 6 and the ridge 4 of the wedge member 2 are fitted and set in the ridge 4 and the groove 6, and as shown in FIG. Let them support you. Thereafter, the base member 1 was moved and adjusted on the pillow 21 to center the tube 20, the tube 20 was correctly positioned, and earth and sand were charged to bury the tube 20. Thereafter, a part of the injected sediment was removed to check whether the position of the buried pipe 20 fluctuated. As a result, no abnormality was found in the position of the pipe 20.
[0018]
In the embodiment of the present invention, the buried pipe position restricting device includes a base member 1 mounted on a pillow 21 that supports the buried pipe body 20 and a buried pipe mounted on the base member 1. The wedge members 2 and 2 are in contact with the lower peripheral surfaces on both sides of the body 20, and the crests and the valleys are formed in the axial direction of the buried pipe 20 on the upper surface of the base member 1 and the bottom surface 2A of the wedge member 2, respectively. Are provided, and the surface of the support slope portion 2B on the lower peripheral surface of the tube of the wedge member 2 corresponds to the outer radius of the buried tube 20. Because of the concave curved surface of the circular arc, the normal support position of the tubular body 20 of the wedge members 2, 2 disposed on the base member 1 can be known in advance by calculation or experiment, and therefore, on the pillow 21, After the wedge members 2 and 2 are previously disposed on the base member 1 placed on the If Orose hanging 設管 body 20 can be followed only for adjusting the position of the base member 1 in can centering of the tube 20, further improves the positioning operation efficiency of the buried tube 20.
[0019]
【The invention's effect】
As described above, the position restricting tool of the embedded pipe body according to the present invention includes the base member 1 mounted on the pillow 21 supporting the embedded pipe body 20 and the embedded pipe body 20 mounted on the base member 1. Crests and valleys are formed in the axial direction of the buried pipe 20 of the upper surface of the base member 1 and the bottom surface 2A of the wedge member 2, respectively. Since the ridges 3 and 4 and the grooves 5 and 6 to be fitted are provided, the wedge member 2 that regulates the position of the buried pipe 20 is set on the base member 1 so as not to be retracted. In this way, the normal position of the pipe body 22 can be reliably held, and even the buried pipe body 20 made of synthetic resin, which is relatively light and unstable after positioning of the buried pipe body 20, can be buried by the injection of earth and sand. Anxiety of movement of the tube 20 can be eliminated. Therefore, particularly excellent effects can be exhibited for a lightweight synthetic resin buried pipe. In addition, since irregularities of peaks and valleys are formed on the upper surface of the base member 1 in a direction orthogonal to the buried pipe 20, centering can be easily performed even if the substrate is placed on one side.
[0020]
Further, the surface of the support slope 2B on the lower peripheral surface of the tubular body of the wedge member 2 forms an arc-shaped concave surface corresponding to the outer radius of the tubular body 20, and the surface of the support slope 2B is formed in the axial direction of the tubular body 20. In the form in which a large number of the extending chevron grooves 7 are formed, the normal support position of the tube 20 of the wedge members 2 disposed on the base member 1 is calculated or experimentally determined as described above. Can easily determine the position of the buried pipe, and even if a small amount of fine earth and sand adheres to the surface of the pipe 20, the earth and sand can be retained in the groove 8 and the supporting slope portion The effect that the tube 20 can be properly supported can be obtained without the phenomenon that the supporting form of the tube 20 becomes unstable due to the earth and sand being sandwiched between the surface of the tube 2B and the tube 20.
[0021]
In addition, the position control device of the buried pipe body of the present invention can be formed of a waste plastic material because of its simple structure, not only can contribute to resource saving and recycling, but also has no corrosion deformation after burying, and the normal state of the buried pipe body 20 can be improved. The position can be secured over a long period of time.
[Brief description of the drawings]
FIG. 1 is a perspective view of a position restricting device for a buried pipe of the present invention.
FIG. 2 is a front view showing a use state of the position restricting tool shown in FIG.
FIG. 3 is a perspective view showing another embodiment of the base member of the position regulating tool of the present invention.
FIG. 4 is a perspective view showing still another embodiment of the base member of the position regulating tool of the present invention.
FIG. 5 is a side view showing another embodiment of the buried pipe position control device of the present invention.
FIG. 6 is a side view showing still another embodiment of the position restricting device for a buried pipe according to the present invention.
[Explanation of symbols]
1. 1. base member Wedge member 2A. The bottom portion 2B of the wedge member. 2. Support slope of wedge member 3. ridge of base member 4. groove of base member 5. ridge of wedge member 6. wedge member groove 20. Angled groove on supporting slope Buried pipe 21. Pillow

Claims (1)

A plate-shaped base member is placed on the pillow for supporting the buried pipe body, the lower outer peripheral surface of the mounting has been embedded tube is supported from both sides of the tube in a state of facing the base member on the consists of a pair of wedge members to prevent displacement, the bottom portion of the upper surface and the wedge member of the base member, in the axial direction of the buried pipe body, chevron ridges and valleys, each of which phase-fitting ridge and groove Are provided so that the groove and the ridge of the wedge member are engaged with the ridge and the groove of the base member in a state in which the wedge member cannot be retracted, and the lower peripheral surface of the tubular body of the wedge member is supported. The surface of the slope portion forms an arc surface corresponding to the outer radius of the tubular body, and a number of mountains extending on the surface of the support slope portion in the axial direction of the tubular body for retaining earth and sand adhered to the surface of the buried pipe body. A position regulating tool for a buried pipe, wherein a mold groove is formed.

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