JP2009106119A - Underground electric wire guide block device and block used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a laying work time and to easily structure a curved route in an underground electric wire guide block device for laying electric wires for power transmission underground. <P>SOLUTION: The underground electric wire guide block device, which has at least one through-hole 105 in the axial direction for passing electric wires for power transmission, is structured by coupling in sequence a plurality of blocks 100 that are buried underground. In this device, each block 100 has an end 102 and another end 103 positioned at both ends in the axial direction and an annular member 104 fixed on the end 102. One block is coupled to the other block by fitting an adjacent other end 103 to the annular protrusion 104a of the annular member 104 of each block. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an underground buried type electric wire guide block device in which a plurality of blocks buried in the ground having at least one axial through-hole for passing electric power transmission wires are sequentially connected, and Regarding the block used.

The power generated at the power station is transmitted while the voltage drops step by step at the ultra high voltage substation, primary substation, intermediate substation, distribution substation, pole transformer, or above-ground transformer tower, Alternatively, power is distributed to homes and small-scale factories through underground power distribution wires. In addition, power is distributed from the distribution substation to buildings and medium factories, from intermediate substations to large factories, and from primary substations to large factories and railway substations. In this way, the transmission of power from an ultra-high voltage substation to a distribution substation is called `` power transmission '', and the electric wires from the power plant, substation or transmission line to the supply and demand point without passing through another power plant or substation Alternatively, the transmission of power through the lead-in line is called “distribution”.
Conventionally, various manufacturers have commercialized perforated pipes for embedding electric wires used for power distribution at a voltage of 100V to 200V, for example, power distribution to homes and small-scale factories. , Ceramic and concrete. However, if these porous tubes are used for power transmission as they are, there are the following problems.

  The low-pressure distribution porous pipes as described above are mostly buried at a depth where the upper end is about 30 cm below the ground, that is, above the groundwater level. In most cases, the upper end of the pipe is buried at a deep position below the groundwater level. Therefore, it is necessary for the perforated pipe for power transmission to prevent the ingress of groundwater in addition to the intrusion of rainwater, and the water resistance is required to be considerably higher than that of the perforated pipe for power distribution. There is a problem in using it as it is for power transmission.

  Moreover, although the diameter of the electric wire for power distribution is about 10-20 mm normally, the diameter of the electric wire for power transmission is as large as 120 mm or more. Thereby, the power transmission wires are considerably heavier than the power distribution wires. As described above, the power transmission wire has a very large diameter and a large weight as compared with the power distribution wire, and therefore requires a lot of labor for the wiring work. Moreover, since the weight is large, the frictional resistance is large, and there is a possibility of damaging the electric wire during the wiring operation.

  Therefore, when embedding electric wires for power transmission, conventionally, the construction has been mainly performed with on-site concrete according to the following procedure. First, a sheet pile (earth retaining) is driven in, the surroundings where the electric wire is embedded is cured, and excavated with a backhoe to a predetermined depth (about 1.2 m to 3 m). After that, electric wires for power transmission are arranged, the periphery is assembled with a formwork, and concrete is placed. The concrete is cured until it reaches the specified strength, the earth and sand are backfilled, and the sheet pile is removed and restored. When construction is performed with on-site concrete in such a procedure, the cost increases because the work process takes one to two weeks. Moreover, if it is an embedding form that crosses the road, it is almost always necessary to restore it, so construction using concrete on the spot is not suitable.

  When embedding a power transmission wire, as shown in FIG. 1, a bolt hole 20 penetrating in the axial direction is formed in a concrete prefabricated block 10 having a through hole 15 for passing an electric wire. A method is also used in which long through bolts 21 are inserted in common into the bolt holes 20 of the blocks 10 and these blocks 10 are connected in the field. In this method, since the entire pipe lines of the plurality of blocks are tightened with the long through bolts 21, fine adjustment is necessary after the blocks are installed. Therefore, if the block 10 is lengthened, the weight increases and fine adjustment becomes difficult. Conventionally, the length of the block is 1 m as a standard. Therefore, there are many connection places of the block 10, and there exists a problem which requires time for the connection work in the field. Further, since the end faces 11 of the block 10 are brought into contact with each other, there is a problem that a curved path cannot be formed.

  An object of the present invention is to reduce the time required for installation work in an underground type electric wire guide block device for burying electric wires for power transmission in the ground.

  Another object of the present invention is to make it easy to configure a curved path in an underground buried type electric wire guide block device for burying an electric wire for power transmission in the ground.

Another object of the present invention is to improve water resistance in an underground buried type electric wire guide block device for burying electric wires for power transmission in the ground.
Another object of the present invention is to reduce the labor of the wiring work and prevent the electric wire from being damaged during the wiring in the underground buried type electric wire guide block device for burying the electric wire for power transmission in the ground. .

The underground buried type electric wire guide block device according to the present invention sequentially includes a plurality of blocks (100) buried in the ground having at least one axial through hole (105) for passing electric wires for power transmission. The present invention relates to a buried underground type electric wire guide block device. Each block (100) includes a first end (102) and a second end (103) positioned at both ends in the axial direction, and an annular member (104) fixed to the first end (102). And. Then, the second end (103) of the other adjacent second block (100) is fitted into the protrusion (104a) of the annular member (104) of the block (100), and the block ( 100) and other blocks (100) are connected.
According to the underground buried type wire guide block device, the other end (103) of the adjacent block (100) is attached to the annular member (104) fixed to the one end of the adjacent block (100). Since it is the structure connected by making it fit, the position alignment of blocks is easy and it is possible to lengthen one block (100). Thereby, the connection location of a block (100) can be reduced at the time of construction, construction speed can be improved, and the time of installation work can be shortened.
Moreover, since it is not necessary to make the end surfaces of a block (100) contact | abut at the time of connection of a block (100), blocks can be connected, making an axial line cross | intersect each predetermined angle. Thereby, a curve path | route (C) can be comprised by the connection of a some block (100).

  In the underground buried type electric wire guide block device according to the present invention, the annular member (104) is loosely fitted to the second end (103), and adjacent blocks (100) have predetermined axial lines with each other. It is preferable that they can be connected while crossing each angle. When the second end (103) fitted to the annular member (104) is loosely fitted, when one block (100) is connected to the other block (100), the shafts of both blocks (100) It becomes easy for the direction line to have an angle. As a result, the curved path (C) can be easily formed by connecting the blocks (100).

In the underground buried type electric wire guide block device according to the present invention, the blocks (100) in the curved path (C) configured by connecting adjacent blocks (100) while crossing the axial direction lines by a predetermined angle are: The length in the axial direction is preferably shorter than the block (100) in the straight path (L).
After the end (103) of the block (100) adjacent to the annular member (104) of the block (100) is inserted by shortening the length of the block (100) in the curved path (C), the block (100 ) Is easy to tilt.

In the underground buried type electric wire guide block device according to the present invention, a seal member (109) for sealing between the outer side surface of the second end (103) and the inner side surface of the annular member (104) may be provided. preferable.
Since the space between the outer side of the end (103) of the adjacent block and the inner side of the annular member (104) is sealed by the sealing member (109), high water resistance can be provided.

  In the present invention, the seal member (109) preferably includes a plurality of uneven portions (111, 112) arranged in the axial direction. Since each of the plurality of recesses prevents water from entering from the outside, it is possible to multiplexly seal between adjacent blocks (100), thereby improving water resistance.

In the present invention, each block (100) preferably further includes a resin pipe (106) disposed on the inner side surface of the axial through hole (105). If the resin pipe (106) having a smaller friction coefficient than that of the concrete is disposed, it is possible to reduce the friction that the electric wire receives during the wiring. Thereby, the wiring work of the electric power transmission wire with a large diameter and weight becomes easy, and the labor of the wiring work can be reduced.
A PFP pipe can be used as the resin pipe (106).

  In the present invention, it is preferable that the adjacent blocks (100) are further reinforced and connected by the connecting material (114). By further reinforcing and connecting adjacent blocks with a connecting material (114), it is possible to improve the strength of the connecting portion of the adjacent blocks (100). If a plate-like member or a rod-like member is used as the connecting member (114), it is possible to reinforce the connection between the blocks with a simple configuration.

In the present invention, the annular member (104) preferably has an anchor portion (108) for ensuring the connection with the concrete block (100).
In the present invention, it is possible to increase the number of electric wires that can be accommodated in the underground buried type electric wire guide block device by forming a plurality of axial through holes (105).

  A block (100) according to the present invention is formed by sequentially connecting a plurality of blocks (100) embedded in the ground having at least one axial through hole (105) for passing a power transmission wire. The present invention relates to a block (100) used in the underground buried type electric wire guide block device. The block (100) includes a first end (102) and a second end (103) located at both ends in the axial direction, and an annular member (104) fixed to the first end (102). And. Then, the second end (103) of the other adjacent block (100) is fitted into the protrusion (104a) of the annular member (104) of the block (100), and the block (100) and Another block (100) can be connected.

The underground buried type electric wire guide block device manufacturing method according to the present invention includes a block (100) buried in the ground having at least one axial through hole (105) for passing a power transmission wire. The present invention relates to a method for manufacturing an underground buried type electric wire guide block device connected in the axial direction. In this manufacturing method, the annular member (104) is disposed at a predetermined position in the mold, and the concrete is poured into the mold so that the first end (102) and the second end at the axial ends are arranged. A block (100) having an end (103) and at least one axial through hole (105), with the annular member (104) fitted to the outer periphery of the first end (102) ( 100), and the second end (103) of the adjacent second block (100) is fitted to the protrusion (104a) of the annular member (104) of the first block (100). And connecting the first block (100) and the second block (100) to connect the plurality of blocks (100) in the axial direction.
The method for manufacturing a block (100) according to the present invention includes connecting at least one block (100) embedded in the ground having at least one axial through hole (105) for passing a power transmission wire in the axial direction. It is related with the manufacturing method of the block (100) used for the underground buried type electric wire guide block apparatus formed. In this manufacturing method, the annular member (104) is disposed at a predetermined position in the mold, and the concrete is poured into the mold so that the first end (102) and the second end at the axial ends are arranged. A block (100) having an end (103) and at least one axial through hole (105) is blocked with the annular member (104) fitted to the outer periphery of the first end (102). The step of forming (100) is provided.

(Configuration of underground wire guide block device)
FIG. 2 is a perspective view of the underground wire guide block device 1 according to the embodiment of the present invention. FIG. 3 is an exploded perspective view of the block for explaining a method of connecting the blocks 100 constituting the underground buried type electric wire guide block device 1. 4A is a view taken along line 4A-4A in FIG. 4B, FIG. 4B is a cross-sectional view taken along line 4B-4B in FIG. 4A, and FIG. 4C is taken along line 4C-4C in FIG. 4B. It is an arrow view. FIG. 5 is a partially cutaway side view in the vicinity of the end 102 of the block 100 according to the present embodiment. FIG. 6 is a partially cutaway side view in the vicinity of the end portion 102 and the end portion 103 of the adjacent block 100, and is an explanatory diagram for explaining the connection state of the end portion 102 and the end portion 103 of the adjacent block 100. . FIG. 7 is an enlarged cross-sectional view of the vicinity of the end portion 102 and the end portion 103 of the adjacent block 100, and is an explanatory view for explaining a sealed state by the seal member 109.

As shown in FIGS. 2 and 3, the underground buried type electric wire guide block device 1 sequentially connects a plurality of blocks 100 having, for example, four axial through holes 105 for passing electric wires for power transmission in the axial direction. Configured. 3 and 4B, each block 100 includes a block main body 101 made of concrete. In this case, the block main body 101 has a right block end 102 and a left block end in the axial direction. Part 103. Hereinafter, the right block end portion 102 and the left block end portion 103 are referred to as the right end portion 102 and the left end portion 103, respectively.
Each block 100 further includes a sheath portion 104 fitted and fixed to the right end portion 102 and a seal member 109 fitted and fixed to the left end portion 103 as shown in FIG. . In addition, each block body 101 has a resin pipe 106 inserted and fixed to the inner periphery of each axial through hole 105. 3 and 5, the sheath 104 has a protruding sheath 104 a (see FIG. 4B) that protrudes to the right in the figure when fitted and fixed to the right end 102.

As shown in FIGS. 5 and 6, the underground-type electric wire guide block device 1 has a seal member 109 (see FIG. 5) on the inner periphery of the protruding sheath 104 a of the sheath 104 fixed to the right end 102 of the block 100. 6), the left end portions 103 of the adjacent blocks 100 are fitted to each other so that the adjacent blocks 100 are sequentially connected. In addition, as shown in FIGS. 2, 3, and 6, the connection between adjacent blocks 100 is reinforced by a connection bar 114 disposed outside the block 100.
Hereinafter, a detailed configuration of each block 100 will be described.

  The block main body 101 of each block 100 is a concrete porous tube having a substantially rectangular cross section, and as shown in FIGS. 2 and 3, four axial tube passage holes 105 for passing electric wires for power transmission are formed. ing. In this embodiment, the case where the axial through holes 105 are formed in 2 rows and 2 columns as shown in FIGS. 2 and 3 will be described as an example. However, the axial through holes 105 are arranged in 1 row and 4 columns. It is good also as a structure which forms and reduces the height of the block apparatus 1. FIG. Further, the number of the axial through holes 105 is not limited to four, and may be three or less (including one) or five or more.

  A resin pipe 106 made of, for example, a reinforced plastic composite pipe (PFP pipe: Polycon Fiber Reinforced Plastic Pipe) having a small frictional resistance is inserted and fixed in the inner periphery of each axial through hole 105. The resin pipe 106 is hardened in a state of being inserted through the block main body 101 when the concrete of the block main body 101 is placed, and is formed integrally with the block main body 101. The resin pipe 106 may be formed of other resin as long as the material has low frictional resistance, or may be formed of other material other than resin.

  The PFP pipe is a pipe formed by forming a resin mortar layer between inner and outer FRP (Fiber Reinforced Plastic) layers into a single structure. Since the PFP pipe has a low frictional resistance, the pulling tension at the time of passing the electric wire is small, so that the electric wire can be prevented from being damaged by the frictional force, and the labor of the electric wire passing operation can be reduced.

  Further, as shown in FIGS. 3, 5, and 6, a connecting bar 114 (see FIG. 8) to be described later is fixed to the outer wall near the right end 102 and the left end 103 of the block body 101. In addition, a bolt hole 116 into which the bolt 117 is inserted is formed.

  The cross section of the left end portion 103 of the block main body 101 is substantially rectangular, and as shown in FIGS. 4A and 4B, a medium diameter portion 103a and a small diameter portion 103b whose diameters are reduced in two steps from the central portion of the block main body 101. The medium-diameter portion 103a and the small-diameter portion 103b are fitted to the protruding sheath of the adjacent block 100 and the inner periphery of the portion 104a (see FIGS. 6 and 7). As shown in FIG. 4A, curved portions 103a-1 and 103b-1 having a predetermined curvature are formed at the corners of the rectangular end face of the left end portion 103, respectively. As shown in FIG. 7, the diameter of the middle diameter portion 103 a of the left end portion 103 is formed to be smaller than the diameter of the protruding sheath 104 a by an interval l, and the protruding sheath 104 a is left via the seal member 9. A free tube is possible at the side end portion 103.

  Further, as shown in FIGS. 6 and 7, a seal member 109 is fitted and fixed to the outer periphery of the small diameter portion 103 b of the left end portion 103 of the block main body 101. 8A and 8B show a front surface and a cross section of the seal member 109. FIG. As shown in FIG. 8A, the seal member 109 is a substantially rectangular annular member corresponding to the outer shape of the left end portion 103. The seal member 109 is a rubber packing, and is fixed by an adhesive after being fitted to the small diameter portion 103b.

  As shown in FIG. 8B, the seal member 109 has a plurality of concave and convex portions in which a convex portion 111 and a concave portion 112 are sequentially provided in the axial direction. In the present embodiment, the concavo-convex portion is formed by cutting a mountain so that the outer end of the convex portion 111 has a sharp shape. As shown in FIGS. 6 and 7, these convex portions 111 are elastically compressed when the left end portion 103 is inserted into the sheath portion 104, and the outer surface and the sheath portion of the left end portion 103 are compressed. The gap between the protruding portion 104 and the inner surface of the portion 104a is sealed. As in the present embodiment, when the gap between the left end portion 103 and the sheath portion 104 is sealed by the plurality of projections 111 arranged in the axial direction, the plurality of projections 111 perform a waterproof function in multiple stages. Water resistance can be achieved. Further, as shown in FIG. 8B, a taper 109a having a diameter decreasing toward the axial end side is formed on the axial end side of the outer surface of the seal member 109. The taper 109a facilitates insertion of the seal member 109 into the sheath 104. In addition, a predetermined length of the axial contact distance to the inner surface of the sheath 104 of the seal member 109 can be reliably ensured to ensure a seal shielding function (see FIG. 7). Further, the seal member 109 is formed with a small-diameter protruding portion 113 at the left end in FIGS. The small-diameter protruding portion 113 is hooked on the end portion of the left end portion 103 and functions as a cushioning material against contact between the end surface of the left end portion 103 and the end surface of the right end portion 102 (see FIG. 7). The seal member 109 does not necessarily have to be bonded to the left end portion 103 of the block, but is bonded and fixed to the protruding portion of the sheath portion 104 or the inner periphery of the portion 104a, and the small diameter portion 103b of the left end portion 103 is fixed thereto. May be fitted.

  The sheath portion 104 is fitted and fixed to the small diameter portion 102a of the right end portion 102 of the block main body 101 when the concrete is placed (see FIGS. 4 to 7). The cross section of the right end portion 102 of the block body 101 is also substantially rectangular like the cross section of the left end portion 103, and as shown in FIG. 4C, a curved portion 102a- having a predetermined curvature is provided at each corner of the rectangular portion. 1 is formed.

  9A and 9B show a front view and a cross-sectional view of the sheath portion 104, respectively. As shown in FIG. 9A, the sheath portion 104 is made of a metal ring-shaped rectangular sheath portion main body 107 and two pieces extending radially inward from the central portion of each side of the sheath portion main body 107. 4 sets = 8 anchor portions 108 in total. A curved portion 107 a having a predetermined radius of curvature is formed at each corner of the sheath portion main body 107. As shown in FIGS. 5 and 6, when the block body 101 is driven with concrete, the four sheaths 104 in the axial direction have four sets of anchor portions 108 of the right end portion 102 of the block body 101. The block body 101 is formed so as to be integrated with the block main body 101 in a state of being bitten into the small diameter portion 102a.

  In FIG. 9B, a substantially half on the left side is a base end side portion that is integrally fixed to the right end 102 of the block body 101, and a substantially half on the right is fitted on the left end 103 of the block body 101. It is a terminal side part used as the protrusion sheath part 104a.

(Manufacturing method of underground wire guide block device)
Next, a manufacturing procedure of the block 100 according to the present embodiment will be described.
First, after positioning the resin pipe 109 and the sheath portion 104 in a predetermined position with respect to a mold (not shown), a predetermined amount of concrete is placed and dried, so that the block main body 101 is made of resin. It forms integrally with the pipe | tube 109 and the sheath part 104, and obtains the structure of FIG. Thereafter, the seal member 109 is fitted into the small diameter portion 103b of the left end portion 103 of the block main body 101 and fixed with an adhesive to complete each block 100. Next, as shown in FIGS. 5 and 6, between the adjacent blocks 100, the protruding sheath 104 a of the left block 104 is fitted to the seal member 109 and the middle diameter portion 103 a of the right block 100. Adjacent blocks 100 are connected in the axial direction, and similarly, the blocks 100 are sequentially connected in the axial direction.
Here, if the axial lines of adjacent blocks 100 intersect each other, as shown in FIG. 2, a curved path C having a curved shape as a whole of the plurality of blocks 100 can be configured.

Next, as shown in FIGS. 2, 3, and 6, the connection bars 114 shown in FIG. 10 are used to reinforce the connection between adjacent blocks 100. The connecting bar 114 has a long hole 115 formed in a metal plate member. As shown in FIG. 3, bolts 117 (see FIG. 3) inserted through the pair of elongated holes 115 of the connecting bar 114 are screwed into the bolt holes 116 of the adjacent blocks 100. Even if the distance between the bolt holes 116 between adjacent blocks fluctuates, the long holes 115 can absorb this in a controlled manner. In the present embodiment, the plate-like connection bar 114 is used as the connection material, but a rod-like connection bar may be used.

  In this embodiment, the sheath portion 104 is integrally formed when the concrete is placed on the block main body 101. However, the present invention is not limited to this, and the block main body 101 is formed integrally with the resin pipe 109. Thereafter, a method of fixing the sheath portion 104 of another member to the right end portion 102 of the block main body 101 using a bolt or the like may be employed. In this case, it is preferable to use a seal member as appropriate so that the waterproofness between the block main body 101 and the sheath portion 104 can be sufficiently secured.

(Effect of this embodiment)
In this embodiment, as shown in FIG. 6 and FIG. 7, since the adjacent blocks are sequentially connected by an annular member (sheath portion) 104, it is easy to align the blocks 100. The length can be increased. In the conventional method in which a plurality of blocks are tightened with long through bolts, the installation position needs to be finely adjusted, so that the entire block length is limited to about 1 m. However, according to the block 100 according to the present embodiment, For example, the entire block length can be 2 m or more. Thereby, the connection location of a block can be reduced at the time of construction, construction speed can be improved, and the time of installation work can be shortened.

  In this embodiment, as shown in FIGS. 6 and 7, the left end portion 103 is fitted to the sheath portion 104, and the end surfaces of the end portion 102 and the end portion 103 are directly contacted by the seal member 109. Since it can comprise so that it may not contact | connect, it is possible to connect adjacent blocks 100, mutually making an axial line cross | intersect every predetermined angle. That is, the adjacent blocks 100 can be connected by tilting the axial line of one block 100 to the axial line of the other block 100. By connecting adjacent blocks in this way, a curved path C as shown in FIG. 2 can be easily formed.

  In the present embodiment, as shown in FIG. 2, the axial length d2 of the block 100 used for the curved path C is formed shorter than the axial length d1 of the block 100 used for the linear path L. Yes. This is to obtain a large curvature in the curved path C. Note that the block 100 in the curved path C and the block 100 in the straight path L have the same shape and size in the right end portion 102 and the left end portion 103, but only the axial lengths of the other portions are different. It is. Accordingly, the block 100 in the curved path C and the straight path L can be created by a similar manufacturing method simply by changing the axial lengths of portions other than the right end portion 102 and the left end portion 103. . Therefore, the curved path C can be easily formed using a plurality of types of blocks 100 having only different lengths without separately forming a specially-shaped curved block, for example, in the curved path.

The perspective view which shows the connection example of the block in the conventional underground type | mold electric wire guide block apparatus. The perspective view of the underground type | mold electric wire guide block apparatus which concerns on this invention. The disassembled perspective view of the block explaining the connection method of the block of the underground type | mold electric wire guide block apparatus which concerns on this invention. It is a figure of each block used for an underground buried type electric wire guide block device, and is an arrow line view along a 4A-4A line in Drawing 4B. FIG. 4B is a cross-sectional arrow view along 4B-4B in FIG. 4A. The arrow line view which followed 4C-4C in Figure 4B. The partially cutaway side view in the vicinity of the sheath portion of the block. The partial notch side view in the vicinity of the both ends to which an adjacent block is connected. Explanatory drawing explaining sealing by a sealing member. 8A is a front view of the sealing member, and FIG. 8B is a cross-sectional view taken along line 8b-8b in FIG. 8A. Fig.9 (a) is a front view of a sheath part, FIG.9 (b) is sectional drawing along the 9b-9b line | wire in Fig.9 (a). The perspective view of a connection bar.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underground type | formula electric wire guide block apparatus 100 Block 101 Block main body 102,103 Block edge part 104 Saddle part 105 Axial through-hole 106 Resin pipe | tube 107 Sheath part main body 108 Anchor 109 Seal member 109a Taper 111 Projection part 112 Concave part 113 Seal Small-diameter protrusion 114 of member 114 Bar 115 Long hole 116 Bolt hole
C Curve path L Straight path

Claims (24)

In the underground buried type electric wire guide block device formed by sequentially connecting a plurality of blocks (100) buried in the ground having at least one axial through hole (105) for passing a power transmission wire,
Each block (100)
A first end (102) and a second end (103) located at both ends in the axial direction;
An annular member (104) secured to the first end (102),
The second end (103) of another adjacent block (100) is fitted into the protrusion (104a) of the annular member (104) of the block (100), so that the block (100) and other The block (100) is connected,
Underground wire guide block device. In the underground buried type electric wire guide block device according to claim 1,
The annular member (104) is loosely fitted to the second end (103),
Adjacent blocks (100) can be connected to each other with their axial lines intersecting each other by a predetermined angle. The underground buried type electric wire guide block device according to claim 2,
The block (100) in the curved path (C) configured by connecting adjacent blocks (100) with their axial lines intersecting each other by a predetermined angle is more than the block (100) in the straight path (L). An underground buried type electric wire guide block device characterized in that the axial length is short. In the underground buried type electric wire guide block device according to any one of claims 1 to 3,
A seal member (109) is provided for sealing between the outer surface of the second end (103) and the inner surface of the annular member (104).
Underground wire guide block device. In the underground buried type electric wire guide block device according to claim 4,
The underground member type electric wire guide block device, wherein the seal member (109) includes a plurality of concave and convex portions (111, 112) arranged in the axial direction. In the underground buried type electric wire guide block device according to any one of claims 1 to 5,
Each block (100) further includes a resin pipe (106) disposed on the inner surface of the axial through hole (105). In the underground buried type electric wire guide block device according to claim 6,
The underground pipe type electric wire guide block device, wherein the resin pipe (106) is a PFP pipe. In the underground buried type electric wire guide block device according to any one of claims 1 to 7,
Adjacent blocks (100) are further reinforced and connected to each other by a connecting material (114). The underground buried type electric wire guide block device according to any one of claims 1 to 8,
The underground member (104) has an anchor portion (108) for ensuring connection with a concrete block (100). The underground buried type wire guide block device according to any one of claims 1 to 9,
A plurality of the axial through holes (105) are formed, and the underground buried type electric wire guide block device. Used in underground underground wire guide block device in which a plurality of blocks (100) embedded in the ground having at least one axial through hole (105) for passing electric wires for power transmission are sequentially connected. Block (100),
A first end (102) and a second end (103) located at both ends in the axial direction;
An annular member (104) secured to the first end (102),
The second end (103) of another adjacent block (100) is fitted into the protrusion (104a) of the annular member (104) of the block (100), so that the block (100) and other A block characterized in that the blocks (100) can be linked. In the block (100) according to claim 11,
A block comprising a sealing member (109) for sealing between an outer surface of the second end (103) and an inner surface of the annular member (104). In a block (100) according to claim 11 or 12,
The block (100) further comprises a resin pipe (106) disposed on an inner surface of the axial through hole (105). In a block (100) according to claim 13,
The resin pipe (106) is a PFP pipe. A block (100) according to any of claims 11 to 14,
The said annular member (104) has an anchor part (108) for ensuring the connection with the block (100) of concrete, The block characterized by the above-mentioned.   The block (100) according to any one of claims 11 to 15, wherein a plurality of the axial through holes (105) are formed. Manufacturing of underground buried type electric wire guide block device having at least one axial through hole (105) for passing a power transmission wire and axially connecting a block (100) buried in the ground. In the method
Disposing the annular member (104) at a predetermined position in the mold;
A block (100) in which concrete is poured into the mold and has a first end (102) and a second end (103) at both ends in the axial direction, and at least one axial through hole (105). Forming the block (100) in a state where the annular member (104) is fitted to the outer periphery of the first end (102);
The second end (103) of the adjacent second block (100) is fitted into the protrusion (104a) of the annular member (104) of the first block (100), and the first block ( 100) and the second block (100) to connect the two plurality of blocks (100) in the axial direction;
A method for manufacturing an underground buried type electric wire guide block device. In the manufacturing method of the block device according to claim 17,
There are three or more blocks, and the blocks (100) are sequentially connected in the axial direction by a connecting material (114), and the manufacturing method of the block device is characterized by the above. In the manufacturing method of the block device according to claim 17 or 18,
The said annular member (104) has the anchor part (108) for ensuring connection with the block (100) of concrete, The manufacturing method of the block apparatus characterized by the above-mentioned. In the manufacturing method of the block device according to any one of claims 17 to 19,
A seal member (109) for sealing between the outer surface of the second end (103) and the inner surface of the annular member (104) is provided at the second end (103) of the block (100). The manufacturing method of a block apparatus further including the process made to fit. In the manufacturing method of the block device according to any one of claims 17 to 20,
Further comprising the step of disposing a resin pipe (106) at a location to be the axial through hole (105) in the mold,
A method of manufacturing a block device, wherein the block (100) is formed in a state where a resin pipe (106) is fixed to the inner periphery of the axial through hole (105). Used in an underground electric wire guide block device having an axially connected block (100) having at least one axial through-hole (105) for passing an electric wire for electric power transmission and embedded in the underground. In the manufacturing method of the block (100) obtained,
Disposing the annular member (104) at a predetermined position in the mold;
A block (100) in which concrete is poured into the mold and has a first end (102) and a second end (103) at both ends in the axial direction, and at least one axial through hole (105). Forming the block (100) in a state where the annular member (104) is fitted to the outer periphery of the first end (102);
A method for producing a block, comprising:   23. The block manufacturing method according to claim 22, wherein the annular member (104) has an anchor portion (108) for ensuring connection with a concrete block (100). ) Manufacturing method. The method of manufacturing a block according to claim 22 or 23,
Further comprising the step of disposing a resin pipe (106) at a location to be the axial through hole (105) in the mold,
The block (100) is formed in a state in which a resin pipe (106) is fixed to the inner periphery of the axial through hole (105) of the block (100).

Images