JPH0718277B2 - Pole lid, pole with lid and manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canopy and a bottom cover of a prestressed concrete pole used for electric poles, lighting poles and the like.

[0002]

2. Description of the Related Art Cylindrical prestressed concrete poles are formed by centrifugal force molding of a pole body that penetrates a number of tension lines on a peripheral wall of a concrete cylinder at substantially equal intervals along the axial direction. It is manufactured through steam curing, demolding, and field curing in sequence, and the canopy and bottom cover are attached to the top and bottom of the pole body during field curing, respectively.

When a canopy is attached to the upper end of the pole body, as shown in FIGS. 18 and 19, vibration is applied during molding to the inside of the many tension wire ends 10 protruding from the upper end surface of the pole body 9. A compacted disc 41 made of concrete is inserted, and the outer periphery of the bottom face of the disc 41 is superposed on the inner periphery of the upper end face of the pole body 9.

As shown in FIGS. 18 and 19, an annular reinforcing reinforcing bar 42 is fitted on the outer side of the tension wire end portion 10 projecting from the upper end surface of the pole body 9, and the reinforcing surface of the circular plate 41 is An adhesive-containing mortar 43 is applied between the outer periphery of the upper end surface of the pole body 9 with a trowel, the disc 41 is fixed to the upper surface of the pole body 9 with the adhesive-containing mortar 43, and an adhesive-containing mortar 43 is used. Each tension wire end portion 10 and the reinforcing reinforcing bar 42 are buried in the inside of the above, and a canopy composed of a concrete disk 41 and an adhesive-containing mortar 43 applied around the disk 41 is fixed to the upper end of the pole body 9.

The case of attaching the bottom lid to the lower end of the pole body is the same as the case of attaching the canopy to the upper end of the pole body.

[0006]

However, when the canopy and the bottom cover are attached to the upper and lower ends of the pole body during field curing, the pole body being field cured is placed laterally outdoors and stacked in multiple stages. Therefore, the scaffolding for work is assembled, the disk, the reinforcing bar and the mortar containing the adhesive are carried on the scaffold, and the worker climbs and works at a high place.

Therefore, the work of attaching the canopy and the bottom cover is a work at a high place, which is dangerous. It takes a lot of work to carry heavy discs and reinforcing bars to high places. Further, since the work of attaching the canopy and the bottom cover is an outdoor work, it cannot be performed when the weather is bad.

The adhesive-containing mortar forming the peripheral portions of the canopy and the bottom lid is applied during curing in a field, and it takes a long time to cure.

Therefore, the adhesive-containing mortar forming the peripheral portions of the canopy and the bottom cover also plays a role of fixing the canopy and the bottom cover to the pole body. When you transport or set up
The canopy or bottom lid may fall off.

The adhesive-containing mortar in the peripheral portion of the canopy and the bottom lid, in which the ends of the tension line of the pole are buried, may be cracked due to deterioration over time, and the tension line may be corroded.

The adhesive-containing mortar in the peripheral portion of the canopy may be cracked, and mortar fragments may fall to damage people or objects.

An object of the present invention is to solve the above conventional problems.

[0013]

The pole lid of the present invention comprises:
It consists of a lid and a stopper, and the lid is formed in a disk shape that covers the end surface of the pole body, and on the back side there is an annular tension wire storage groove into which the end of each tension wire protruding from the end surface of the pole body is inserted. The stopper is formed so as to be fixed in the tension wire storage groove of the lid body, and the tension wire fitting hole projecting a large number of locking pieces toward the center side is provided, and the lid body is attached to the end surface of the pole body. Insert each end of the tension wire protruding from the end surface of the pole body into the tension wire storage groove of the lid, and insert it into the tension wire fitting hole with the locking piece of the stopper fixed in the tension wire storage groove of the lid. The end portion of the tension wire protruding from the end surface of the pole body is fitted, and the lid is attached to the end portion of the tension wire with a stopper.

In the pole with a lid of the present invention, the end face of the pole body is covered with a disk-shaped lid body, and the tension line storage groove formed on the back surface of the lid body has an annular tension line storage groove. Insert the end into the tension wire fitting hole of the stopper fixed in the tension wire storage groove of the lid, and fit the end of the tension wire protruding from the end face of the pole body to the end of the tension wire. The lid was attached with a tool.

According to the method of manufacturing a pole with a lid of the present invention, a pole body having a large number of tension lines penetrating the peripheral wall of a concrete cylinder along the axial direction is centrifugally molded, steam-cured, and demolded. Then, cover the end face of the pole body with a disk-shaped lid, insert each end of the tension line protruding from the end face of the pole body into the annular tension line storage groove formed on the back surface of the lid body, The tension wire fitting hole of the stopper fixed to the tension wire storage groove is fitted with the tension wire end protruding from the end surface of the pole body, and the lid is attached to the tension wire end with the stopper, and then, The pole body with the lid attached is cured in a field.

[0016]

In the present invention, the work of attaching the pole lid is
This is done before the field body is cured on the pole body.

As for the lid of the pole, the lid plays a role of covering each end of each tension wire of the pole body, and the stopper serves to fix the lid to the pole body.

[0018]

According to the present invention, the work of attaching the lid is carried out before the field body is cured, and is not carried out during the field curing. Therefore, it is not necessary to carry it out at a high place outdoors, and at a high place outdoors. It is less dangerous and more efficient than the case.

Since the stopper of the pole lid is used to fix the lid body to the pole body, there is less risk of falling off during transportation or establishment of the pole, as compared with the conventional product using the adhesive-containing mortar. .

The lid does not have to be made of an adhesive-containing mortar whose peripheral portion covering each end of each tension wire of the pole body is painted with a trowel, and a conventional product made of such an adhesive-containing mortar. Compared to, cracks are less likely to occur, and corrosion of tension lines and falling of fragments are less likely to occur.

[0021]

【Example】

<First Embodiment (see FIGS. 1 to 3)> The canopy 1 of the pole of this embodiment is composed of one lid 2 and two stoppers 6 as shown in FIGS.

As shown in FIGS. 1 and 2, the lid body 2 is formed by press-molding mortar mixed with carbon fibers to form a disk-shaped main body 3 and concentric with the back surface of the main body 3. The annular groove forming member 4 of the synthetic rubber molded product is fitted into and adhered to the circular concave portion, and the annular tension wire receiving groove 5 formed in the groove forming member 4 is concentrically arranged on the back surface of the main body 3. is doing.

As shown in FIGS. 1 and 2, the stopper 6 is an elastic circular steel plate, and penetrates through a tension wire fitting hole 7 having a large number of locking pieces protruding toward the center, at the center. is doing.

In the tension wire storage groove 5 on the back surface of the lid body 2, as shown in FIG.
As shown in FIG. 2 and FIG. 2, two stoppers 6 are fitted in parallel with the back surface of the lid body 2, and the inner and outer portions of each stopper 6 are engaged with the engaging groove on the inner peripheral surface of the tension wire storage groove 5, respectively. And the stoppers 6 are fixed to the tension wire storage grooves 5 at opposing positions with their centers sandwiched therebetween.

In the pole with a canopy of this example, as shown in FIG. 3, the tension wire storage groove 5 of the lid 2 is filled with an epoxy resin adhesive 8 and a large number of tension wires are provided on the peripheral wall of the concrete cylinder. The lid body 2 is covered on the upper end surface of the pole body 9 penetrating in the axial direction, and the tension wire ends 10 projecting on the upper end surface of the pole body 9 are inserted into the tension wire storage grooves 5 of the lid body 2. Then, in the tension wire fitting holes 7 of the both stoppers 6 fixed in the tension wire storage groove 5, the tension wire end portions 1 projecting from the upper end surface of the pole body 9 respectively.
0 is fitted by bending each locking piece of the tension line fitting hole 7, and the lid 2 is attached to the two tension line ends 10 by two stoppers 6.

The adhesive 8 filled in the tension wire storage groove 5 overflows from the tension wire storage groove 5 by the insertion of the tension wire end 10 of the pole body 9 as shown in FIG. It flows into the gap between the upper end faces of the pole body 9 and hardens,
The canopy 1 is bonded to the upper end of the pole body 9.

The outer peripheral portion of the gap between the back surface of the lid 2 and the upper end surface of the pole body 9 into which the adhesive 8 did not flow is shown in FIG.
As shown in, the cement paste 11 is applied.

The work of attaching the canopy 1 to the upper end of the pole body 9 is performed immediately after the pole body 9 is centrifugally molded and steam-cured to remove it from the mold, and then the pole body 9 to which the canopy 1 is attached is cured. .

<Second Embodiment (see FIGS. 4 to 6)> As shown in FIGS. 4 and 5, the bottom lid 13 of the pole of the present embodiment includes one lid 14 and two stoppers 6. Consists of.

As shown in FIGS. 4 and 5, the lid 14 is formed of vinyl chloride resin into a substantially dish-shaped disk,
An annular tension wire storage groove 5 is formed concentrically on the back surface.

The stop 6 is the same as in the previous example, as shown in FIGS.

As shown in FIGS. 4 and 5, two stoppers 6 are fitted in parallel with the rear surface of the lid 14 in the tension line storage groove 5 on the rear surface of the lid 14, and the inside of each stopper 6 is fitted. The outer portion and the outer portion into the engagement groove on the inner peripheral surface and the engagement groove on the outer peripheral surface of the tension wire storage groove 5, respectively, and fix both stoppers 6 in the tension wire storage groove 5 at opposing positions sandwiching the center thereof. is doing.

As shown in FIG. 6, the pole with a bottom lid of this embodiment is such that the tension wire storage groove 5 of the lid 14 is filled with an epoxy resin adhesive 8 and the bottom of the pole body 9 is covered with the lid 14. Each tension wire end 10 projecting from the lower end surface of the pole body 9 into the tension wire storage groove 5 of the lid body 14, and the tension wire fitting of the two stoppers 6 fixed in the tension wire storage groove 5 In hole 7,
The tension wire end portions 10 protruding from the lower end surface of the pole body 9 are fitted by bending the respective locking pieces of the tension wire fitting holes 7, and the two tension wires end portions 10 have two stoppers. The lid 14 is attached at 6.

As shown in FIG. 6, the adhesive 8 filled in the tension wire storage groove 5 overflows from the tension wire storage groove 5 by the insertion of the tension wire end portion 10 of the pole body 9 and the back surface of the lid body 14 is removed. It flows into the gap between the lower end surfaces of the pole body 9 and hardens, and the bottom lid 13 is bonded to the lower end of the pole body 9.

As shown in FIG. 3, cement paste 11 is applied to the outer peripheral portion of the gap between the back surface of the lid 14 and the lower end surface of the pole body 9 to which the adhesive 8 did not flow.

The work of attaching the bottom cover 13 to the lower end of the pole body 9 is performed immediately after the pole body 9 is centrifugally molded and steam-cured to remove it from the mold, and then the pole body 9 with the bottom cover 13 attached is piled up. To cure.

<Third Embodiment (Refer to FIGS. 7 and 8)> As shown in FIGS. 7 and 8, the pole canopy 16 of this embodiment includes one lid 17 and two stoppers 6. Become.

As shown in FIGS. 7 and 8, the lid body 17 is formed into a disc shape by compacting concrete by applying vibration to the lid body, and the annular tension line storage groove 5 is concentrically formed on the back surface. It is formed into a shape.

As shown in FIGS. 7 and 8, the stopper 6 is the same as that in the previous example, and the lid 17 is molded when the lid 17 is molded.
It is fixed in the tension line storage groove 5.

That is, as shown in FIGS. 7 and 8, two stoppers 6 are provided in the tension wire storage groove 5 on the back surface of the lid body 17 as shown in FIGS.
And the inner and outer portions of each stopper 6 are buried in the inner peripheral surface and the outer peripheral surface of the tension wire storage groove 5, respectively.
Both stoppers 6 are fixed to the tension wire storage groove 5 at opposing positions with the center thereof sandwiched.

In the pole with a canopy of this example, as shown in FIG. 7, the adhesive-containing mortar 1 is placed in the tension line storage groove 5 of the lid 17.
8 is filled, the upper end surface of the pole body 9 is covered with the lid body 17,
Each tension line end 10 projecting from the upper end surface of the pole body 9 is inserted into the tension line storage groove 5 of the lid body 17, and the tension line fitting holes 7 of both stoppers 6 fixed in the tension line storage groove 5 are inserted. , The tension wire end portions 10 projecting from the upper end surface of the pole body 9 are fitted by bending the respective locking pieces of the tension wire fitting holes 7, and the two tension wire end portions 10 have two pieces. The lid 17 is attached with the stopper 6.

The adhesive-containing mortar 18 filled in the tension wire storage groove 5 overflows from the tension wire storage groove 5 when the tension wire end 10 of the pole body 9 is inserted, as shown in FIG. It flows into the gap between the back surface and the upper end surface of the pole body 9 and hardens to bond the canopy 16 to the upper end of the pole body 9.

The work of attaching the canopy 16 to the upper end of the pole body 9 is performed after the pole body 9 is demolded and before the field is cured.

<Fourth Embodiment (Refer to FIGS. 9 and 10)> As shown in FIGS. 9 and 10, the bottom cover 20 of the pole of this embodiment compacts concrete by vibration as in the previous example. Disk-shaped lid body 21 formed by molding, and two stoppers 6 fixed to the tension wire storage groove 5 on the back surface of the lid body 21 when the lid body 21 is formed.
Consists of.

As shown in FIG. 9, the pole with a bottom lid of this example has a mortar 1 containing an adhesive agent in the tension line storage groove 5 of the lid 21.
8 and cover the lower end surface of the pole body 9 with the lid 21.
Each tension line end 10 protruding from the lower end surface of the pole body 9 is inserted into the tension line storage groove 5 of the lid body 21, and the tension line fitting holes 7 of both stoppers 6 fixed in the tension line storage groove 5 are inserted. , The tension wire ends 10 projecting from the lower end surface of the pole body 9 are fitted by bending the respective locking pieces of the tension wire fitting holes 7, and two tension wire ends 10 are provided at the two tension wire ends 10. The lid 21 is attached with the stopper 6.

The adhesive-containing mortar 18 filled in the tension wire storage groove 5 overflows from the tension wire storage groove 5 when the tension wire end 10 of the pole body 9 is inserted, as shown in FIG. It flows into the gap between the back surface and the lower end surface of the pole body 9 and hardens to adhere the bottom lid 20 to the lower end of the pole body 9.

The work of attaching the bottom cover 20 is performed after the pole body 9 is demolded and before the field is cured.

<Fifth Embodiment (see FIGS. 11 to 14)> The canopy 23 of the pole of this embodiment is composed of one lid 24 and two stoppers 27.

As shown in FIGS. 11 and 12, the lid body 24 is formed by compacting concrete by vibration to form a disk shape, and an annular tension wire storage groove 25 is formed concentrically on the back surface. Two stopper insertion holes 26 are formed between the front surface and the bottom surface of the tension wire storage groove 25 at opposite positions sandwiching the center of the tension wire storage groove 25.

As shown in FIGS. 13 and 14, the stopper 27 is a circular steel plate having elasticity, and penetrates through a tension wire fitting hole 28 having a large number of locking pieces protruding toward the center, at the center. However, a large number of locking pieces are projected outward in the periphery.

In the pole with a canopy of this example, as shown in FIG. 14, the tension wire storage groove 25 of the lid body 24 is filled with the adhesive-containing mortar 29, and the lid body 24 is covered on the upper end surface of the pole body 9. Each of the tension wire ends 10 protruding from the upper end surface of the pole body 9 is inserted into the tension wire storage groove 25 of the lid body 24, and the stoppers 27 are respectively inserted into both the fastener insertion holes 26 of the lid body 24 and the periphery thereof. Each locking piece is bent and inserted, and both stoppers 27 are fitted from the stopper insertion holes 26 between the inner peripheral surface and the outer peripheral surface of the tension wire storage groove 25, and at the same time, the both stoppers 27 are tensioned. Wire fitting hole 28
The tension wire end portions 10 protruding from the upper end surface of the pole body 9 are fitted into the two tension wire end portions 10 by bending the respective locking pieces of the tension wire fitting holes 28. The lid 24 is attached with individual stoppers 27, and the adhesive insertion mortar 29 is filled in both stopper insertion holes 26.

The adhesive-containing mortar 29 filled in the tension wire storage groove 25 overflows from the tension wire storage groove 25 by inserting the tension wire end 10 of the pole body 9 as shown in FIG. It flows into the gap between the back surface and the upper end surface of the pole body 9 and hardens to bond the canopy 23 to the upper end of the pole body 9.

The work of attaching the canopy 23 is performed after the pole body 9 is demolded and before the field is cured.

<Sixth Embodiment (see FIGS. 15 to 17)> The bottom lid 31 of the pole of this embodiment comprises one lid 32 and two stoppers 27.

As shown in FIG. 15 and FIG. 16, the lid 32 is formed into a disk shape by compacting concrete by vibration in the same manner as in the previous example, and is formed into a disk shape, and an annular tension wire is stored on the back surface. The groove 25 is formed concentrically, and two stopper insertion holes 26 are penetrated between the surface and the bottom surface of the tension wire storage groove 25 at opposing positions sandwiching the center of the tension wire storage groove 25.

The stop 27 is the same as in the previous example.

In the pole with a bottom lid of this example, as shown in FIG. 17, the tension wire storage groove 25 of the lid 32 is filled with an adhesive-containing mortar 29, and the lower end surface of the pole body 9 is covered with the lid 32. The tension line ends 10 projecting from the lower end surface of the pole body 9 are inserted into the tension line storage grooves 25 of the lid 32, and the stoppers 27 are respectively inserted into the both stopper insertion holes 26 of the lid 32. The respective locking pieces on the periphery are curvedly inserted, and both the stoppers 27 are fitted from the stopper insertion holes 26 between the inner peripheral surface and the outer peripheral surface of the tension wire storage groove 25, and at the same time, the both stoppers 27 are inserted. Tension wire fitting hole 28
The tension wire ends 10 protruding from the lower end surface of the pole body 9 are fitted into the tension wire fitting holes 28 with the locking pieces curved, respectively. The lid 32 is attached with the individual stoppers 27, and the adhesive insertion mortar 29 is filled in each of the stopper insertion holes 26.

The adhesive-containing mortar 29 filled in the tension wire storage groove 25 overflows from the tension wire storage groove 25 by the insertion of the tension wire end 10 of the pole body 9 as shown in FIG. It flows into the gap between the back surface and the upper end surface of the pole body 9 and hardens to bond the bottom lid 31 to the lower end of the pole body 9.

The work of attaching the bottom cover 31 is performed after the pole body 9 is demolded and before the field is cured.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a canopy of a pole according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the canopy of the pole of the same example.

FIG. 3 is a front vertical cross-sectional view of the pole with a canopy of the same example.

FIG. 4 is a vertical sectional front view of a bottom lid of a pole according to a second embodiment.

FIG. 5 is a plan view of a bottom lid of the pole of the same example.

FIG. 6 is a bottom vertical sectional front view of the pole with a bottom lid of the same example.

FIG. 7 is a front vertical sectional view of a pole with a canopy according to a third embodiment.

FIG. 8 is a bottom view of the canopy of the pole of the example.

FIG. 9 is a bottom vertical sectional front view of a pole with a bottom lid according to a fourth embodiment.

FIG. 10 is a plan view of a bottom lid of the pole of the same example.

FIG. 11 is a vertical sectional front view of a canopy of a pole according to a fifth embodiment.

FIG. 12 is a bottom view of the canopy of the pole of the same example.

FIG. 13 is an enlarged plan view of a stopper for the canopy of the pole of the same example.

FIG. 14 is a front vertical cross-sectional view of the pole with a canopy of the same example.

FIG. 15 is a vertical cross-sectional front view of the bottom lid of the pole of the sixth embodiment.

FIG. 16 is a plan view of the bottom cover of the pole of the same example.

FIG. 17 is a bottom vertical sectional front view of the pole with a bottom lid of the same example.

FIG. 18 is a vertical sectional front view of a conventional pole with a canopy.

FIG. 19 is a plan view of the pole with a canopy.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Canopy 2 Lid body 5 Tension line storage groove 6 Stopper 7 Tension line fitting hole 9 Pole body 10 Tension line end 13 Bottom cover 14 Lid body 16 Canopy 17 Lid body 20 Bottom lid 21 Lid body 23 Canopy 24 Lid body 25 Tension wire storage groove 27 Stopper 28 Tension wire fitting hole 31 Bottom lid 32 Lid body

Claims (3)

[Claims] 1. A lid attached to an end of a pole body which penetrates a circumferential wall of a concrete cylindrical body along an axial direction, and comprises a lid and a stopper, and the lid is an end surface of the pole body. It is formed into a disk shape to cover
On the back side, a ring-shaped tension wire storage groove into which each end of the tension wire protruding from the end surface of the pole body is inserted is formed, and the stopper is formed so as to be fixed to the tension wire storage groove of the lid body. Provide a tension wire fitting hole that protrudes the locking piece toward the center side, cover the end surface of the pole body with the lid, and insert the end of each tension wire protruding on the end surface of the pole body into the tension wire storage groove of the lid body. Insert and insert the end of the tension wire protruding from the end face of the pole body into the tension wire fitting hole with the locking piece of the stopper fixed in the tension wire storage groove of the lid, and A pole lid characterized in that the lid is attached with a stopper. 2. A pole with a lid in which a lid is attached to an end of a pole body that penetrates a plurality of tension lines in a peripheral wall of a concrete cylindrical body along an axial direction, and a disk-shaped lid body is provided on an end surface of the pole body. Insert each end of the tension wire protruding from the end surface of the pole body into the annular tension wire storage groove formed on the back surface of the lid, and fit the tension wire of the fastener fixed in the tension wire storage groove of the lid body. A pole with a lid, characterized in that a tension wire end portion projecting from an end surface of a pole body is fitted in the dowel hole, and a lid is attached to the tension wire end portion with a stopper. 3. A pole body in which a large number of tension lines penetrate through a peripheral wall of a concrete cylindrical body along the axial direction is centrifugally molded, steam-cured, and demolded, and a disk shape is formed on the end surface of the pole body. Stopper that covers the cover of the lid, inserts each end of the tension wire protruding from the end face of the pole body into the annular tension wire storage groove formed on the back surface of the lid, and fixes it in the tension wire storage groove of the lid. Insert the end of the tension wire protruding from the end surface of the pole body into the tension wire fitting hole of, and attach the lid with a stopper to the end of the tension wire, and then stack the pole body with the lid attached. A method of manufacturing a pole with a lid characterized by curing.