JPS63193806A - 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 <Industrial Application Field> The present invention relates to a method for constructing concrete pipes, that is, humid pipes.

<Conventional technology> The conventional method for producing humid pipes is to put relatively soft concrete into a cylindrical formwork rotating at high speed, and use centrifugal force to adhere the concrete as a cylindrical layer inside the formwork. There are two methods: a centrifugal forming method in which hardened concrete is placed in a rotating formwork, and the concrete is rolled out into a cylindrical shape using rollers within the formwork.

<Problems to be Solved by the Invention> In the case of the above-mentioned known methods, even in the case of manufacturing methods using relatively soft concrete, a good finished surface can be obtained by finishing the inner surface with a roller or the like.

However, in the case of conventional equipment, concrete is poured into
Since the inner surface finishing machine is a separate device, after the concrete is poured into the formwork, the inner surface finishing machine must be inserted into the formwork to finish the inner surface, improving production efficiency. There were some problems such as not having one.

<Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems. a pipe-making machine that finishes concrete into a cylindrical shape; a feeding conveyor that is located on the side of the pipe-making machine and that can move forward and backward to feed concrete into the cylindrical formwork on the pipe-making machine; a concrete charging and finishing machine equipped with a finishing roller for finishing the inner surface of the poured concrete layer;
It consists of a relay conveyor that charges concrete supplied from a concrete hopper to the input conveyor, and the concrete supplied from the concrete supply hopper to the input conveyor via the relay conveyor is transferred to the concrete input finishing machine into the formwork. After inserting the concrete into the mold, the concrete is uniformly poured into the formwork by the feeding conveyor, and then the finishing roller of the concrete feeding roller is pressed against the concrete layer in the formwork to finish the inner surface of the concrete layer, and then the concrete is poured into the formwork. It is an object of the present invention to provide a method for manufacturing a hume pipe, which is characterized in that a finishing machine is extracted from a formwork.

<Embodiment> In the plan view of FIG. 1, 1 is a hopper for supplying concrete, and in the illustrated example, two hoppers 1 are arranged at different positions.

As shown in FIG. 2, a belt feeder 2 is provided at the bottom of each hopper 1, and concrete is supplied from the belt feeder 2 to the rear end of a relay conveyor 3 consisting of a belt conveyor.

Reference numeral 4 denotes a finishing machine that advances and retreats along a pair of left and right guide rails 502 arranged to intersect with both conveyors 3 at right angles.

As shown in detail in FIGS. 4 and 5, this loading finish R4 is carried out by a loading conveyor 9 consisting of a belt conveyor installed on a horizontal machine frame 8 that moves up and down along a support frame 7 provided on a truck 6.
and a finishing roller 11 rotatably supported by a pair of front and rear bearing frames 10 attached to the front lower side of the machine frame 8 so as to be able to rise and fall freely.

Further, the truck 6 travels by driving wheels by a motor 13, the machine frame 8 is raised and lowered by a hydraulic cylinder 14, and the bearing frame 10 is moved up and down by a hydraulic cylinder 14.
is raised and lowered by a hydraulic cylinder 16.

Further, the finishing roller 11 is driven by a motor 1 installed on the cart 6.
The finishing roller 11 is driven by a transmission shaft 19 connected to the shaft of the finishing roller 11 through a universal joint 18 and connected to the shaft of the finishing roller 11 through a universal joint 20.

21 is a cylindrical formwork, 22 in FIG. 7 is a gauge ring attached to one end of the cylindrical formwork 21, and 23 is an end ring similarly attached to the other end of the cylindrical formwork 21.

In the embodiment, the formwork 21 is not only supported and rotated, but also
The cylindrical formwork 21 is supported by a vibrating pipe making machine 24 that applies vibration.

That is, in this case, as shown in FIGS. 2 and 3, each pair of rotating shafts 27 is fixed to both ends of two rotating shafts 27 that are rotatably supported by bearings 26 at both ends of a pair of front and rear support stands 25. Between the support foil 28 and both rotating shafts 27, the sixth
As shown in the figure, a rotating shaft 3 supported by a rocking plate 32 swingably attached to a bracket 29 on a support base 15 with a shaft 31
The two cylindrical formworks 21 are supported by supporting foils 34 fixed to both ends of the formwork 30, rotated, and vibrated.

The vibration mechanism of the diaphragm 32 is, for example, disclosed in Japanese Patent Publication No. 60-460.
R41'll as described in No. 05 is used.

That is, as shown in FIG. 6, a gear-shaped vibration foil 39 driven by a motor 38 is attached to a reciprocating frame 37 that moves forward and backward while guiding the lower surface of the support base 25 using a hydraulic cylinder 36 with respect to the support base 25. A pumping foil 40 fixed to the rotating shaft 33 is placed on the vibrating foil 39, thereby imparting rotation and vibration to the cylindrical formwork 21.

Moreover, when not applying vibration, the movement frame 37 is moved to the left in FIG. 6 by the action of the cylinder 36, and the vibration foil 39
is separated from the pumping foil 40, and the sliding plate 32 is placed on the support base 25 to be fixed.

In addition, the support foil 28 on the right side is connected to the motor 41 as shown in FIG.
Although not shown in FIG. 6, the left support foil 28 is rotated as a result of the rotation of the cylindrical formwork 21, and the center support foil 34 is connected to the formwork 21 and rotated as a result of the rotation of the cylindrical formwork 21.

Next, manufacturing of a hume tube using the above-mentioned apparatus will be explained.

First, two cylindrical formworks 21 with a predetermined diameter are placed on each support foil 28 and 34 as shown in FIG. The other wheels 28, 34 are also rotated via , and the left and right cylindrical formworks 21 are also rotated.

Next, each cylinder 14 of each finishing machine 4 facing each cylindrical formwork 21 is operated to set the machine frame 8 to a height suitable for each cylindrical formwork 21.

On the other hand, from the potting pot 1, suitably hardened concrete is fed into each relay conveyor 3 by a belt feeder 2, and at the same time, the cart 6 is advanced in the direction of each cylindrical formwork 21, and the feeding conveyor 9 is activated.

By the above operation, from relay conveyor 3 to input conveyor 9
The concrete placed in the concrete is placed into the rotating cylindrical formwork 21 from the tip of the feeding conveyor 9.

Therefore, by feeding concrete into the cylindrical form 21 from the tip of the conveyor 9 and moving the cart 6 forward and backward, the concrete is poured into the cylindrical form 21 without fail.

When the layer of concrete in the cylindrical formwork 21 becomes suitable, the lifting cylinder 16 of the finishing roller 11 at the bottom of the machine frame 8 inserted in the cylindrical formwork 21 is activated to lift the finishing roller. By lowering the roller 11, the vicinity of both ends of the roller 11 are brought into contact with the inner circumferences of the gauge ring 22 and the end ring 23 of the cylindrical formwork 21, as shown in FIG. 7, and at the same time, the roller 11 is driven by the motor 17.

During this time, the cylindrical form 21 continues to rotate, and at the same time the finishing roller 11 also rotates, so that the inner surface of the concrete layer 45 within the cylindrical form 21 is accurately finished as shown in FIG.

In addition, when using the vibrating pipe 124 as in the embodiment, the cylindrical form frame 21 is rotated as described above, and the vibration foil 39 is rotated by the motor 38 in FIG. When the integrated pumping foil 40 is placed on the vibration foil 39, the pumping foil 40 vibrates up and down together with the diaphragm 32 due to the unevenness of the vibration foil 39, thereby compacting the concrete layer 45 within the cylindrical formwork 21.

Once the concrete layer 45 inside the cylindrical formwork 21 has hardened to some extent through the process described above, the finishing roller 11 is raised by the action of the cylinder 16 and separated from the concrete layer 45, and then the trolley 6 is retreated and the machine frame 8 and finishing roller 1
1 from the cylindrical formwork 21, and the cylindrical formwork 21 together with the concrete layer 45 is vibrated pipe-making l! 24 Remove from the top and place in the curing chamber.

After curing, the cylindrical form 21 is disassembled and the completely hardened hume tube is taken out.

However, if the pipe is manufactured using hardened concrete,
It is also possible to immediately disassemble the cylindrical formwork 21, take out the tubular concrete layer 45, and put only this concrete layer 45 into a curing chamber for curing.

Further, when using concrete of normal softness and performing centrifugal forming, the pipe may be formed using only centrifugal force without using a vibration pipe making machine.

In the above embodiment, two cylindrical molds are rotated at the same time to mold two hume tubes at the same time. Of course, this can also be implemented.

<Effects of the Invention> In the method for manufacturing humid pipes of the present invention, concrete is supplied from a concrete pot via a relay conveyor onto a charging conveyor of a concrete charging finishing machine. Since the concrete placed on the feeding conveyor is inserted into the cylindrical formwork rotating in front of it and moved forward and backward, the concrete inside the cylindrical formwork is thrown uniformly. .

In addition, since the finishing roller of the concrete feeding finishing machine is pressed against the concrete layer in the formwork to finish the inner surface of the concrete layer, the concrete feeding finish is extracted from the formwork, so it is not possible to use conventional concrete. Compared to a manufacturing method in which a feeding machine and an internal finishing machine are used as separate devices, the process is simplified and manufacturing efficiency is improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of an apparatus for carrying out the method of the present invention, Fig. 2 is a front view of the same as above, Fig. 3 is a side view of the same as above, Fig. 4 is an enlarged front view of a concrete pouring and finishing shed; Fig. 5 is a side view showing the concrete injection finish b1 further enlarged, Fig. 6 is an enlarged side view showing an example of the main part of the vibrating pipe, and Fig. 7 is an enlarged longitudinal section showing the condition of the inner surface finish. It is a diagram. 1... Concrete supply hopper 2... Belt feeder 3... Relay conveyor 4... Concrete charging finishing machine 9... Feeding conveyor 11
... Finishing roller 21 ... Cylindrical formwork 24.
...Vibration pipe making machine Fig. 1 Fig. 2 Fig. 8

Claims (1)

[Claims] A pipe making machine that supports and rotates a cylindrical formwork to finish the concrete poured into the formwork into a cylindrical shape, and a cylindrical mold on the side of the pipe making machine. A concrete charging/finishing machine includes a movable charging conveyor for charging concrete into a frame, a finishing roller for finishing the inner surface of the concrete layer charged into the formwork, and a concrete supplying hopper for supplying concrete to the charging conveyor. The concrete supplied from the concrete hopper onto the charging conveyor via the relay conveyor is transferred to the charging conveyor while the concrete charging finishing machine is inserted into the formwork. The concrete is poured uniformly into the formwork, and then the finishing roller of the concrete finishing machine is pressed against the concrete layer in the formwork to finish the inner surface of the concrete layer, and then the concrete finishing machine is removed from the formwork. Features: A manufacturing method for Hume tubes.