JP3075003U - Buried sign sheet - Google Patents

Abstract

(57) [Problem] To bury a buried object directly above a buried object when burying the buried object at a half depth of the conventional structure, without breaking the buried object by the excavating machine and also digging down the excavating machine. To prevent damage to buried objects. SOLUTION: In a buried marker sheet 1, a band-shaped sheet 5 made of an appropriate material and having a predetermined breaking strength is attached to a back surface thereof. The attachment is such that the embedded marker sheet 1 is easily separated when it is pulled by the excavator with a predetermined force.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is intended to be buried directly above the underground objects such as water pipes, sewer pipes, gas pipes, high-voltage power cables, etc. It relates to a buried sign sheet.

[0002]

[Prior art]

 When repairing underground water pipes, gas pipes, high-voltage power cables, etc., or when burying new buried objects near existing buried objects, excavation work on the ground is necessary. Becomes At this time, work is usually performed by excavators such as excavators.

[0003] However, if these excavating machines dig vigorously, the buried object may be inadvertently damaged. For this purpose, a buried sign sheet printed with sign letters such as "Water pipe caution", "Be careful when there is a water pipe under this area, please ask for witness", etc., is buried directly above the buried object. In this way, workers are informed of the existence of buried objects and their damage is prevented.

By the way, when burying a buried object such as a water pipe or a gas pipe, a depth from the surface of the ground is determined. It depends on the object to be buried, for example 120 cm for water pipes. However, this depth will be revised in half in the future.

[0005] When the burial depth is changed in this way, the depth differs depending on the existing buried object, and the ground is ground in order to repair a buried object located at a shallow position from the buried surface according to a new standard. When digging, the operator may mistake the depth as usual and accidentally dig deep with a drilling machine such as a power shovel.

[0006] In this case, there is a possibility that a part of the buried sign sheet located at a position close to the ground surface (about 30 cm) is strongly pulled down by an excavator such as a power shovel, and may be extended and broken. is there. When it breaks, the buried marker sheet does not catch on the excavated body of the excavator such as the power shovel and cannot be lifted. For this reason, workers cannot be informed of the existence of the buried object, and there is a risk that the buried object may be damaged. In this case, there is no point in burying the buried sign sheet.

[0007]

[Problems to be solved by the invention]

 The present invention has been made in view of the above points, and when a buried object is buried directly above a buried object at a half depth of a conventional structure, it is broken by an excavating machine such as a power shovel. It is an object of the present invention to provide a buried sign sheet which can prevent damage to a buried object by preventing the excavation machine from digging down.

[0008]

[Means for Solving the Problems]

 Thus, the gist of the present invention is to provide a buried marker sheet made of a synthetic resin band-shaped sheet, on which the sign characters are printed, and which are folded at regular intervals in the length direction and provided with overlapping portions. A buried sheet made of an appropriate material and having a predetermined breaking strength is attached, and the attachment is such that the embedded marker sheet is easily separated when pulled by a predetermined force. On the sign sheet.

Further, in the above configuration, a buffer material made of an appropriate material may be further attached to the back surface of the attached band-shaped sheet. In this way, when the buried sign sheet is pushed deeply by the excavator, the excavated body of the excavator does not strongly hit the buried object, and it can be prevented from being damaged.

[0010]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II in FIG. 1, and FIG. 3 is an enlarged view of a portion A in FIG.

[0011] In the figure, 1 is made of a synthetic resin strip-shaped sheet, and a sign 2 such as “Water pipe caution”, “Be careful when there is a water pipe below and ask for attendance” is printed on the surface of the strip, and the length is also long. This is a buried marker sheet provided with folding and overlapping portions 3, 3, 3,... The synthetic resin band-shaped sheet is made by laminating low-density polyethylene and a woven fabric by lamination, and the material, sign characters, width and the like are the same as those of the conventional one.

A heating needle (not shown) is inserted into each of the folded portions 3, 3,..., And three layers are integrally welded along the inner circumference of the needle hole of the needle. The welding portions 4, 4, 4,... Are formed.

Reference numeral 5 denotes a band-shaped sheet attached to the back surface of the buried marker sheet 1 and made of an appropriate material and having a predetermined breaking strength. In this embodiment, the same material as that of the buried marker sheet 1 is used, but the thickness is doubled.

Further, the band-shaped sheet 5 can be easily attached to the back surface of the buried marker sheet 1 when the buried marker sheet 1 is pulled with a predetermined force by an excavator (not shown) of an excavating machine. It is about to be separated. For this reason, in the present embodiment, similarly to the folded and overlapped portion of the buried marker sheet 1, the heating needle (FIG. (Not shown)), and these two layers are integrated by heat welding along the inner periphery of the needle hole of the needle. In addition, 6 is a welding part.

Thus, in the case of the present embodiment, even if the excavated body of the excavating machine hits the embedded marker sheet 1 and pushes it down, a predetermined breakage is formed on the back surface of the embedded marker sheet 1. Since the band-shaped sheet 5 having strength is lined, the buried marker sheet 1 does not expand and develop. Therefore, breakage of the embedded marker sheet 1 can be prevented.

Further, since the buried marker sheet 1 and the belt-shaped sheet 5 are easily separated when a predetermined force is applied to the buried marker sheet 1, the buried object marker sheet 1 is mounted on an excavating machine. When it is caught by an excavation body, only this is pulled out to the ground.

Further, since the belt-like sheet 5 lined with the buried marker sheet 1 does not stretch and has a considerable breaking strength, it prevents the excavated body of the excavating machine from penetrating deeply, so that the excavated body directly hits the buried object. Can be prevented.

Next, a second embodiment of the present invention shown in FIG. 4 will be described. The difference between the present embodiment and the first embodiment is that, in the present embodiment, the folded and overlapped portion of the buried marker sheet is not welded and the whole of the buried marker sheet and the band-shaped sheet are sewn. It is. Since other configurations and operations are the same as those of the first embodiment, the same members are denoted by the same reference numerals and detailed description thereof will be omitted. In FIG. 4, reference numeral 7 denotes a sewing thread. In the present embodiment, the number of sewing locations is one at the center in the width direction, but may be increased as appropriate.

Next, a third embodiment of the present invention shown in FIG. 5 will be described. The difference between the present embodiment and the first embodiment is that, in this embodiment, the embedded marker sheet and the belt-shaped sheet are integrated by sewing all over them without welding. is there. Since other configurations and operations are the same as those of the first embodiment, the same members are denoted by the same reference numerals, and detailed description is omitted. In FIG. 5, reference numeral 8 denotes a sewing thread. In this embodiment, the number of sewing positions is two in the vicinity of both ends in the width direction. However, the number may be further increased or decreased.

Next, a fourth embodiment of the present invention shown in FIG. 6 will be described. The difference between the present embodiment and the first embodiment is that, in the present embodiment, a buffer material made of an appropriate material is further attached to the back surface of the attached belt-shaped sheet. Since other configurations are the same as those of the first embodiment, the same members are denoted by the same reference numerals, and detailed description will be omitted. In FIG. 6, reference numeral 9 denotes a cushioning material made of a rubber sheet. In this embodiment, a rubber sheet is used, but foamed polyurethane or other suitable material can be used.

In the case of the present embodiment, in addition to the operation of the first embodiment, when the buried sign sheet is pushed deep by the excavating machine, the excavated body of the excavating machine is buried. It also has the effect of not hitting the object strongly and preventing its breakage.

[0022]

[Effect of the invention]

 Since the present invention has the structure and operation as described above, when burying a buried object at a depth of half of the conventional one and burying it directly above it, break it with an excavator or other excavating machine. It also prevents the drilling machine from digging down and prevents damage to buried objects.

Further, if a cushioning material is further attached to the back surface of the attached strip-shaped sheet, the excavated body of the excavating machine may be strongly buried when the buried sign sheet is pushed deeply by the excavating machine. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II in FIG.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a perspective view of a second embodiment of the present invention.

FIG. 5 is a perspective view of a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional side view of a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Buried marker sheet 2 Marker character 3 Folding overlapping part 4 Welding part 5 Band-shaped sheet 6 Welding part 7 Sewing thread 9 Buffer material

Claims (2)

[Utility model registration claims] 1. A buried marker sheet comprising a synthetic resin band-shaped sheet, on which a marker character is printed and a folding and overlapping portion is provided at equal intervals in a length direction,
A belt-shaped sheet made of an appropriate material and having a predetermined breaking strength is attached to the back surface, and the attachment is such that the embedded marker sheet is easily separated when pulled by a predetermined force. Buried sign sheet. 2. The buried marker sheet according to claim 1, wherein a buffer material made of an appropriate material is further attached to the back surface of the attached belt-like sheet.