JPS60143908A - Manufacture of hume pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a hume tube, and more particularly to a method for manufacturing a hume tube having a curved end surface.

Conventionally, the end surface of the Hume's canal has been flat or straight. For this reason, for example, when attaching a fume pipe to a member having a curved wall surface such as a manhole, as shown in Fig. 1, it is attached to a manhole (A) formed into a predetermined shape on site. Huyum canal (
The end of B) was crushed by hitting with a hammer (C) or the like to form a desired shape.

Furthermore, when the attached member such as a manhole is fixedly installed, and the distance between the installed fume pipe and the attached member is not an integral multiple of the length of the fume pipe, the same applies as above. In order to do this, it was necessary to smash the Huyum tube with a hammer or the like to make it into the desired length.

However, the Huyum pipe that has been subjected to such work naturally has cracks and fissures, and these cracks can cause even greater shearing due to vibrations caused by the passage of automobiles and subsidence of the ground after the Huyum pipe is buried. It became. Moreover, the fume pipes formed by such work have many unevenness at the cut opening and significant damage to unnecessary parts, so it is necessary to repair the parts after installation into manholes etc. Construction required a large amount of time and manpower.

Therefore, the inventor of the present invention has already proposed a novel fume pipe having a curved end surface corresponding to the curved shape of the member to be attached.

The object of the present invention is to provide a method that can efficiently manufacture such a novel Hume tube.

Briefly speaking, the present invention provides a method for preparing an outer peripheral wall form that defines at least the outer peripheral wall of a hume pipe, and preparing a curved end face form that cooperates with the outer peripheral wall form to define the curved end shape of the hume pipe. This is a method of manufacturing a humid pipe, in which a form is assembled using an outer peripheral wall formwork and a curved end face formwork, and concrete is poured into the form.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 2 is a partially cutaway perspective view showing an example of a novel Hume tube, which is the background of the present invention. As is well known, the humid pipe (100) is made of concrete, and has an outer peripheral wall (102>
It has a substantially cylindrical shape with a slightly larger diameter socket (104) at one end, and a curved end surface (106) at the other end. This socket (104) is for receiving the insertion port of another humid pipe, and the curved end surface (10, 6) is for adapting to the curved wall surface of the member to be attached, such as a manhole. . Also, this Huyum pipe (100”)
A reinforcing material (114) is embedded inside. This reinforcing material (114) is intended to increase the strength of the hume tube (100), but may or may not be present.

Similarly, explaining the Huyum pipe (101), the Huyum pipe (101) is also made of concrete, and the outer peripheral wall (101) is made of concrete.
03), and has an insertion port (105) with a slightly smaller outer diameter at one end, and a curved end surface (, 107) at the other end. This insertion port (105) is for inserting into the socket of another humid pipe or the hole on the side of the manball, and the curved end surface (107) corresponds to the curved wall surface of the member to be installed, such as a manhole. It is for the purpose of Moreover, inside this Huyume tube (101),
A reinforcing material (114) is embedded. This reinforcement material (11
4) is for increasing the strength of the Hume tube (101), but it may be present or absent.

Next, with reference to FIGS. 3 and 4, an example in which such a novel humid pipe is connected to a manhole will be described.

The manhole (200) is made of, for example, concrete and has a substantially cylindrical shape, and is vertically buried underground.

A hole (202) and another hole (203) communicating in the lateral direction are bored in the lower part of the hole. These holes (
202) and (203) are connected to a Huum tube corresponding to its diameter.

For example, a hume tube (100) is connected to the hole (202). The curved end surface (106) of the hump pipe (100) is selected to correspond to the curved shape or curvature of the inner wall surface (201) (7) of the manhole (200).

Then, connect this Huyum pipe (100) to the manhole (20
0) into the hole (202), and its curved end surface (106)
to be flush with the inner wall surface (2 1) of the manhole (200). In this case, since the hume tube (100) has a curved end surface (106) as shown in FIG. 2, there is no need for the conventional process of breaking it by hitting it with a hammer or the like.

Furthermore, the length of this hume tube (100) is the same as that of the other hume tubes to be installed and the manball (2o).

).The length should be approximately equal to the distance from the Examples of Hume tubes (100) with different lengths are shown in FIG.

The length of this hume tube (100) may be within 2 meters, for example, if the length of other hume tubes is 2 meters. This is because if the distance between another humu pipe to be installed and the attached member (200) such as a manhole is 2 meters or more, the distance can be reduced to within 2 meters by adding an additional 2 meter hume pipe to that part. This is because it can be done.

Furthermore, as shown in FIGS. 3 and 4, the other hume tube (101) may be attached to the other hole (203) of the attached member (200). In this case, the length of the Hume tube (101) may be arbitrary. This is because other hume tubes connected to the hume tube (101) can be attached later.

Then, a predetermined amount of mixed concrete (mortar) is poured into the joint between the humid pipes (100) (101) and the manhole (200) and allowed to cure for a predetermined period of time.

In this way, the hume pipe (100) can be easily provided protruding from the side surface of the manhole (200).

FIGS. 5 to 8 are diagrams showing an embodiment of the present invention. As shown in FIGS. 5 to 8, the hump tube manufacturing apparatus (1) includes a substantially cylindrical outer peripheral wall form (2) placed in a horizontal state. The front formwork (3) and the rear formwork (4) are fixed to the front and rear ends of this outer wall formwork (2) with fasteners (6) and (7), respectively, and the inside of the outer wall formwork (2) is fixed. At this point, the middle formwork (5) is fixed with the engaging part i angle fitting (8), and the outer peripheral wall formwork (2) etc. are integrated and this is driven by the drive device (10) as a rotation imparting device. It is a one-piece object that can be rotated around its axis.

The outer peripheral wall formwork (2) is made of metal such as iron, and the fifth
As shown in the figure and FIG. 6, it can be divided into two parts: an upper formwork (24) and a lower formwork (25).

Furthermore, this outer wall formwork (2) can be divided into two parts in the middle, front and back, in order to facilitate the removal of the molded hume tube <100 ) (101). The front end of this outer peripheral wall formwork (2) is formed as a large diameter section (21), and the cylindrical section (23) and this large diameter section (21) are connected by an inclined section (22). ing. The large diameter part (21) and the inclined part (22) are connected to the front formwork (3).
In cooperation with this, the shape of the socket (104) of the hume canal (100) is defined. Further, a large number of holes (2B) for fittings are bored in the side surface of the outer peripheral wall formwork (2) in the longitudinal direction. A mounting tool (8) and a hole cover or a screw cover (81) are screwed into this common mounting hole (28). In this way,
The holes (28) and the fittings (8) constitute the attachment means for the middle formwork (5).

Further, the upper formwork (24) and the lower formwork (25) are fixed with clamping tools (26) made of bolts, nands, or the like. By removing this clamping tool (26) and dividing the outer peripheral wall formwork (2) into an upper formwork (24) and a lower formwork (25),
The molded hume tubes (100) (101) can be easily removed.

Furthermore, the front formwork (3) is fixed to the front end of the outer peripheral wall formwork (2) with fasteners (6), and the rear formwork (4) is fixed to the rear end with fasteners (7). The middle formwork (5) is fixed to the intermediate part thereof with a fixing tool (8). Further, on the outer circumferential wall at the front and rear ends of the outer circumferential wall formwork (2), there is a press-contact shaft (1) that receives power from a drive device (10) as a rotation imparting device.
27) are provided respectively. This drive device (1o
) consists of a rotating ring (11), a motor (not shown), etc., and as shown in Fig. 5, the rotating ring (11) comes into contact with the pressure shaft (27) and receives power from the motor. is given to the rotating wheel (27). This power rotates the outer peripheral wall formwork (2) around its axis to generate an appropriate centrifugal force, and the concrete therein is made into a substantially cylindrical shape by the centrifugal force.

The front formwork (3) is made of metal such as iron, and as shown in FIGS.
4) Convex portion (3■) whose inner diameter or shape should be defined
It consists of a roughly donut-shaped plate having a shape. This front formwork (3) is fixed to the front end of the outer peripheral wall formwork (2) with fixing devices (6) made of bolts, nands, or the like. In order to pull out the molded hume tube (100), loosen this fixing tool (6) and remove it from the outer wall formwork (2) to the front formwork (3).
Just remove it.

The rear formwork (4) is made of metal such as iron, and has a stepped portion (41) that defines the outer diameter or shape of the insertion port (105) of the hump tube (100), as shown in Fig. 6. It consists of a roughly donut-shaped plate. This rear formwork (3) is fixed to the rear end of the outer peripheral wall formwork (2) with fasteners (7) consisting of bolts, nuts, etc. By loosening this fixing tool (7) and removing the rear formwork (4) from the outer peripheral wall formwork (2), the molded hume pipe (101) can be easily pulled out.

The middle formwork (5) has a hollow cylindrical shape, as particularly shown in FIGS. 6 and 8, and has an inner wall surface (201) of an attached member such as a manhole (200) at both ends. An arcuate curved end surface (51) similar to or corresponding to the shape is formed. This middle formwork (5) has a large number of holes for fittings (28) provided in the middle part of the outer peripheral wall formwork (2).
) that screws into or engages with one of the engaging members or fixtures (
8) is fixed inside the outer peripheral wall formwork (2).

Further, a hole cover or a latch cover (81) is screwed into the fitting hole (28) into which the fitting (8) is not fitted. This screw cap (81) is for preventing a mixture such as cement from leaking from an unused fitting hole (28).

The fitting (8) acts as an engaging member of the fitting means, and the position of the fitting hole (28) through which it is inserted or engaged can be changed as appropriate.

Thereby, the front and rear positions of the middle formwork (4) can also be changed. By changing the front and rear positions of the middle formwork (4), it is possible to obtain hume tubes (100) (101) of different lengths as shown in FIG.

Next, the manufacturing process of the hume tube (100) (101'') using the present hume tube manufacturing apparatus (1) will be explained.

First, mix appropriate amounts of water, cement, cement reinforcement, sand and gravel.

On the other hand, as shown in Figure 9, several straight steel frames (111)
A cylindrical reinforcing member (110) is formed by welding an axial steel frame (112) to the outer periphery of the reinforcing member (110). Further, a reinforcing member (not shown) made of a cylindrical tube made of a rolled hard plate having holes is attached to the reinforcing member (110) to form a reinforcing member (114)'. In addition, such reinforcement material (114) is attached to the completed Huyum tube (
100) Planar arc-shaped curved end surface (106) of (101)
”), it is preferable to form the edge into a planar arc shape.

This reinforcing material (114) is a humid tube (100) (1
01), and the Huium canal (100)
-(101) can increase the strength, but it may be present or absent. Furthermore, the strength of the reinforcing material (114) will be greater if it is formed using a large number of thin wire rods. Reinforcement material (114
) further doubles those with different diameters or sizes,
It may be used in triplicate.

The reinforcing material (114) is then loaded into the outer peripheral wall formwork (2) as shown in FIG. Then, the front formwork (3), the rear formwork (4), and the middle formwork (5) are attached to the predetermined positions of the outer peripheral wall formwork (2) using the fixing tools (6) (7) and the fixtures (8). Fix it.

In this case, the reinforcement (114) is fixed in place by the front formwork (3), the rear formwork (4) and the middle formwork (5).

When this "mold assembly" process is completed, as shown in FIG.
bring it into contact with. And the motor of the drive device (10) (
(not shown) to rotate the rotary wheel (11) at a high speed of about 1200 revolutions per minute. Accordingly, the outer peripheral wall formwork (2) and the like rotate around their axes, generating centrifugal force.

Therefore, a predetermined amount of the mixture such as cement prepared earlier is poured into the outer peripheral wall formwork (2) using a screw conveyor (not shown). Then, due to the generated centrifugal force, the mixture of concrete etc.
) and solidify.

After the above steps, the hume tube (100) (1
01) to protect it and make it fully effective,
Steam curing is performed to prevent cracking due to drying and shrinkage due to hardening.

After this "steam curing" process, the outer peripheral wall formwork (2
) into two parts, front and rear formwork (3) and rear formwork (4).
) and the middle formwork (5).

Furthermore, the outer peripheral wall formwork (2) is divided into an upper formwork (24) and a lower formwork (25). And the completed Huyume tube (
100) Take out (101) from the outer peripheral wall formwork (2).

In addition, during this "demolding", the inner surface of the outer peripheral wall formwork (2), etc. is coated with heavy oil or light oil in order to prevent a mixture of cement, etc. from adhering to the inner surface of the outer peripheral wall formwork (2), etc. A remover such as a mixture of linseed oil and linseed oil is applied to the humid tube (100) (101) using a removal machine (not shown).
It is best to apply it while squirting it from the tip.゛And,
All you have to do is prepare for the next pouring of the mixture, such as cement.

In this way, the Huum canal (100
) (101) is completed.

This invention is not limited to the above manufacturing apparatus.

For example, as shown in FIG. 11, the shape of the curved end surface of the middle formwork (5) may be changed as appropriate, and the shape of the outer peripheral wall formwork (2) may be made into a cylindrical shape other than the double-cylindrical shape. Moreover, the prism 1
It may be made into a solid shape such as a columnar shape.

Furthermore, as shown in FIG.
Front formwork (3a) and rear formwork (4) forming
a), and a curved end surface (5) is provided inside the outer peripheral wall formwork (2a).
1a) may be provided to produce two humid tubes of suitable length and with similar sockets (104). Furthermore, in this case, either the front formwork (3a) or the rear formwork (4a) may be removed to produce one humid pipe of an appropriate length.

Furthermore, as shown in Fig. 13, a front formwork (3h) and a rear formwork (4b) forming an insertion port (ios>) are provided at one end of the humid pipe, and the inside of the outer peripheral wall formwork (2b) is Two middle formworks (5b) with curved end surfaces (51b) are provided at the top, and two middle formworks (5b) with suitable lengths and similar spigots (105) are provided.
It is also possible to form three hume canals having the following values. In addition, in this case, the front formwork (3b) or the rear formwork (
4b) and one of the two middle formworks (5b) may be removed to manufacture one humid pipe of an appropriate length.

As described above, according to the present invention, since a mold having a curved end surface is used, a novel humid pipe having a curved end surface can be manufactured extremely efficiently.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional example of attaching a hump pipe to a manhole. FIG. 2 is a perspective view of the Hume's canal, which is the background of this novel invention. 3 and 4 are a plan sectional view and a front sectional view showing the state of use of the hume tube shown in FIG. 2. FIG. 5 is a perspective view of an embodiment of the present invention. FIG. 6 is a partially cutaway view of the embodiment shown in FIG. FIG. 7 is a front view of the embodiment shown in FIG. Figure 8 shows a diagonal view of the embodiment shown in Figure 5 with the upper part of the outer peripheral wall formwork removed.
Figure 1. FIG. 9 is a perspective view showing an example of a reinforcing member for the hume tube. FIG. 10 is a side view of Hume's canals of different lengths. FIG. 11, FIG. 12, and FIG. 13 are diagrams showing other embodiments of the present invention, respectively. (1)--Full tube manufacturing equipment, (2)--Outer wall formwork, (3)--Front formwork, (4)-Rear formwork, (5
)--Central formwork, (6) (7)--Fixing tool, (8)-
Fixture, (10) - Drive device, (11) - Rotating wheel, (
24) - Upper formwork, (25) - Lower formwork, (27) -
Pressure shaft, (28) - Common mounting hole, (51) - Curved end surface, (81) - Screw cap, (100) (101) - Hume pipe, (102) (103") - Outer peripheral wall, (1
06) (107) - Curved end face, (200) - - Manhole. Patent Applicant Yagura Yagura Partial Representative Patent Attorney Oka 1) Zen Kei<;; ) (C) 101 100

Claims (1)

[Scope of Claims] A step of preparing an outer circumferential wall formwork that defines at least an outer circumferential wall of the hume pipe, and preparing a curved end face form that cooperates with the outer circumferential wall formwork to define the curved end shape of the hume pipe. A method for producing a humid pipe, the method comprising: forming a form using the outer peripheral wall formwork and the curved end formwork; and pouring concrete into the assembled formwork.