JP3120980B2 - Concrete unit manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a culvert for civil engineering,
The present invention relates to a concrete unit manufacturing apparatus used when manufacturing a large-sized concrete unit such as a basement structure for a house.

[0002]

2. Description of the Related Art Conventionally, there has been known a concrete unit manufacturing apparatus 100 as shown in FIGS. 6A is an explanatory view of the manufacturing apparatus 100 in a plan view, and FIG. 6B is an explanatory view of the same side view.
As shown in FIG.
Reference numeral 0 denotes a plurality of large frame dies 101 arranged side by side on a predetermined site in the factory, a boiler 102 for supplying steam to these frame dies 101, and a boiler 102 provided between the frame dies 101 and the boiler 102. And steam piping 103.

The frame mold 101 usually comprises an outer mold 104 and an inner mold 105 mounted in the outer mold 104. Reinforcement is provided in a cavity 106, which is a gap between the two molds 104, 105. After that, ready-mixed concrete is
The concrete unit is formed in the cavity 106 after a predetermined curing period has elapsed.

[0004] The boiler 102 is provided at one corner of a factory building 107 for manufacturing so-called secondary concrete products such as small concrete articles. The steam obtained here is partially used for secondary products in the factory building 107. And the remaining portion is supplied to the frame die 101 via the steam pipe 103. From the steam pipe 103, the valve 1 is positioned at a position corresponding to each frame mold 101.
09 is branched, and the steam from the steam pipe 103 passes through the steam branch pipe 108 and the open valve 109 to form the frame mold 10 to be cured.
1 is supplied.

On the other hand, as shown in FIG. 6B, the frame mold 101 is covered with a heat insulating cover 110 made of a heat insulating sheet or a predetermined heat insulating material after the ready-mixed concrete is loaded in the cavity 106. Then, the steam from the boiler 102 is introduced into the heat insulating cover 110 through the steam pipe 103 and the steam branch pipe 108, so that the heat of the steam is transferred to the ready-mixed concrete in the cavity 106 through the molds 104 and 105. Thus, a so-called curing treatment for promoting the solidification of the concrete by promoting the chemical reaction of the ready-mixed concrete component is performed.

[0006]

In the conventional concrete unit manufacturing apparatus 100 as described above, since a large number of frame molds 101 are arranged outdoors, steam is applied to all the frame molds 101. In order to be able to supply the steam, it is necessary to lay steam pipes 103 so that the steam spreads over each frame mold 101, and sometimes the length of the steam pipes 103 may exceed 100 m, and the piping cost is reduced. There is a problem that it is bulky.

Further, since the length of the steam pipe 103 is very long, the steam from the boiler 102 is allowed to cool while flowing through the long steam pipe 103, causing a large heat loss. In order to achieve this, the steam temperature must be set to a higher temperature in advance, which raises a problem that energy costs rise.

[0008] Even if the steam temperature derived from the boiler 102 is set to a higher temperature, the boiler 10
As the steam temperature in the steam pipe 103 gradually decreases as the distance from the frame mold 101 close to the boiler 102 increases, the frame mold 101 close to the boiler 102 and the frame mold 101 far from the boiler 102.
And the temperature of the steam is different.
There is also a problem that the curing condition varies due to the difference in perspective from 02, and it is not possible to perform a uniform curing process within the same time, thereby lowering the work efficiency.

Further, the heat insulating cover 110 is used to form the frame 10.
1, the amount of steam required to heat the ready-mixed concrete via the frame mold 101 becomes extremely large, and the drain generated by the condensation of the steam becomes 70%. There is also a problem that while having a temperature suitable for curing, such as ℃ to 80 ° C., it flows down to the ground on which the mold is arranged, thereby resulting in a very low thermal efficiency of steam. To compensate for this, the heat supply capacity of the boiler 102 must be increased, which raises a new problem that the equipment cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and almost eliminates the need for a long steam pipe extending from a boiler to a frame. It is an object of the present invention to provide a concrete unit manufacturing apparatus capable of suppressing an increase in cost and further improving workability.

[0011]

According to the first aspect of the present invention,
A concrete unit manufacturing apparatus comprising: a frame mold having a cavity for loading ready-mixed concrete, and a boiler for supplying steam for heating and curing the ready-mixed concrete in the cavity; A moving path laid along a frame type arrangement field for arranging the molds, and a moving body moving on the moving path are provided, the boiler is installed on the moving body, and the frame form is a wall.
Having a steam passage formed therein;
From the boiler through a pipe joint that can be
Is supplied and the concrete is heated and cured.
Steam drain after it has been used as a heat source for
It is configured to return to the boiler .

According to the present invention, the ready-mixed concrete is sequentially loaded into the cavities of each of the frame dies in a state where the plurality of frame dies are arranged in the frame arranging field, and moved to the position of the loaded frame dies. The body travels along the moving path , forming steam from the boiler installed on the moving body inside the frame-shaped wall
When the raw concrete in the cavity receives heat from steam by supplying the raw concrete into the flow passage , a chemical reaction between the components is promoted, that is, a so-called heat curing treatment is performed.

[0013] Since the boiler for generating steam for heating and curing is mounted on a moving body that freely moves along a moving path, the moving body is moved to a required frame-shaped position to thereby move the boiler closer to the boiler. Can be placed in a state where the frame is positioned.

Therefore, when the boiler is immovably installed at a fixed position in the factory premises as in the prior art, a long steam pipe is installed to the frame-type position and the steam from the boiler is framed. In addition to the cost of laying the piping, the temperature of the steam drops during the movement of the piping and the thermal efficiency deteriorates, and the steam temperature given to the frame mold varies depending on the distance from the boiler, Although there was a problem that uniform heat curing treatment could not be performed,
According to the present invention, such a problem is solved by moving the boiler to the frame-type position, the thermal efficiency is improved, and the steam temperature is not dispersed, and the concrete can always be cured under uniform curing conditions. become.

Further , as in the prior art, the heat insulating cover is covered in a frame shape.
By introducing steam into the insulation cover
When performing curing of ready-mixed concrete by heating,
Raw concrete that is in contact with the frame mold
Non-uniform heat transfer with concrete and external
In the heat transfer through the frame mold from the
-Although there is a disadvantage that the cost increases, the present invention
Has solved such inconvenience, shortened curing time and
Return of the drain to the boiler to generate heat from the drain
Effective use contributes to lower energy costs.

According to a second aspect of the present invention, in the first aspect of the invention, the frame type arrangement field is formed so that a plurality of frame types can be arranged in series, and the moving path sandwiches the frame type arrangement field. Are formed by a pair of rails extending in the longitudinal direction of the frame type arrangement field laid in the above, and the moving body is configured to be able to run on the rails while straddling each frame type. .

According to the present invention, by moving the moving body along the rail in a state where a plurality of frame forms are arranged in a line in the frame form arrangement field, the steam can be easily moved to the position of the necessary frame form. Can be done. Then, since the moving body travels on a pair of rails laid with the frame type arrangement field interposed therebetween, the moving body straddles the frame type, and a stable traveling state can be obtained. In addition, since the frame during operation is covered by the ceiling of the moving body, it is possible to perform the operation without being exposed to rainwater even in rainy weather, thereby improving workability.

According to a third aspect of the present invention, in the second aspect of the present invention, the moving body has a crane device disposed on a ceiling portion.

According to the present invention, the crane provided on the ceiling is operated in a state where the moving body is located at the frame mold position, thereby loading the ready-mixed concrete into the cavity and assembling the frame mold. And various manufacturing operations such as die cutting after the concrete unit is formed,
As a result, productivity is improved by improving workability.

[0020]

FIG. 1 is a perspective view showing one embodiment of a concrete unit manufacturing apparatus 1 according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. As shown in this figure, a concrete unit manufacturing apparatus 1 includes a frame type arrangement field 2 set on a site of a factory, and a frame type arrangement field 2
A pair of rails (moving paths) 3 laid along the
It has a basic configuration including a movable building 4 that is guided by the rail 3 and moves freely, and a boiler 5 installed in the movable building (moving body) 4.

The frame type arrangement field 2 has a width dimension (for example, 20 m) on which the frame type 6 can be placed with a margin, and is formed over a long distance (for example, 100 m). Concrete is cast flat on the surface of the frame type arrangement field 2, and rails 3 are laid on both ends thereof over the entire length in the longitudinal direction. A work area 21 having a predetermined width for the operator to perform various works is formed inside each rail 3, and a frame is formed inside one work area 21 (the right rail 3 in the example shown in FIG. 2). A frame type installation area 22 for setting the mold 6 is set, and a temporary storage area 23 for temporarily storing the manufactured concrete unit 9 is formed inside the other work area 21. Further, between the temporary storage area 23 and the frame-shaped arrangement area 22, a mixer car passing area 24 through which the mixer car C can pass is formed.

In the present embodiment in which the width of the frame type arrangement field 2 is set to 20 m, the width of the work area 21, the frame type installation area 22, the temporary storage area 23 and the mixer car passage area 24 are , 4 m, 4 m and 6 m, respectively, so that a sufficient space for producing concrete units in the frame type arrangement field 2 is ensured. The mixer truck C is for carrying the ready-mixed concrete loaded in the frame mold 6 into the frame mold arrangement field 2.

Also, as shown in FIG.
Is provided with an inverted sandbox 25 in which sand is loaded adjacent to the frame die 6. This inverted sandbox 25 is finished and
Is a sand bed for inverting the concrete unit 9 taken out from the concrete unit 9 by 90 ° so that the concrete unit 9 can be easily carried.
Has been made so that it is not damaged.

A work machine M such as a crane truck is arranged at an adjacent position outside the frame type arrangement field 2.
The work machine M suspends a reinforcing member H serving as a core of the concrete unit 9 arranged in a reinforcing plant in the frame mold 6 or hoists the concrete unit 9 formed in the cavity of the frame mold 6. In addition, the concrete unit 9 in the reversing sandpit 25 is supported by the reversing operation.

The movable building 4 has a pair of side walls 42 supported by a plurality of columns 41 in the width direction.
2 and a roof 45 supported by a plurality of roof supports 44 and one (left side in FIG. 2) side walls 42 in a state of being penetrated. A cab 46 provided, wheels 47 guided by the rails 3 provided at the bottom of each side wall 42, and a hoist crane 48 traveling forward and backward along the beam 43 laid on the beam 43. It is provided with.

The wheels 47 roll on the rails 3 by driving a drive motor (not shown) by a driving operation in the cab 46, so that the movable building 4 can be arbitrarily moved along the rails 3. It has become.

The hoist crane 48 is a club trolley 48a that runs on a rail attached to the beam 43.
And a hopper 48b suspended from the club trolley 48a. Club trolley 4
8a, a traveling motor (not shown) and a traveling motor for moving the hopper 48b up and down are provided.
6, the hopper 48b receives the ready-mixed concrete from the mixer truck C by the hopper 48b having the closed lower opening, moves the concrete to the upper position of the frame 6 and then opens the closed opening. The ready-mixed concrete inside is loaded into the cavity of the frame mold 6.

A boiler room 50 is formed on the right side wall 42 of the movable building 4 in FIG. 2, and the boiler 5 is installed. The boiler 5 is installed in the boiler room 50. FIG. 3 is a perspective view showing a connection state between the boiler 5 and the frame die 6. As shown in this figure, the boiler 5 has a cylindrical boiler body 51,
The drain recovery tank 52 is placed adjacent to the boiler body 51. A water tank, a combustion chamber, and a steam generation section are provided in the boiler body 51, and water sent from the water tank by the combustion of fuel in the combustion chamber turns into steam in the steam generation section. Is sent to the frame mold 6 through the
The drain condensed inside is collected through the drain collection pipe 54 into the drain collection tank 52.

A drain return pipe 55 for returning the drain collected in the drain recovery tank 52 to the water tank of the boiler body 51 is provided between the boiler main body 51 and the drain recovery tank 52. The drain supplied to the water tank through is reused as raw water for steam.

At the distal ends of the steam pipe 53 and the drain recovery pipe 54, there is provided a quick joint 5 which is a kind of a pipe joint capable of quickly separating from and coming into contact with the other party.
6 is provided, and by operating the quick joint 56, the connection with the piping on the frame mold 6 side can be quickly performed or disconnected.

Next, the frame mold 6 will be described with reference to FIG. As shown in this figure, the frame die 6 includes a frame type base 61 having a square shape in a plan view in which the frame type mounting area 22 is constructed, and four unit units provided around the periphery of the frame type base 61. Mold member 6
2, four unit inner mold members 63 disposed inside the four unit outer mold members 62, and a platform interposed between the unit inner mold members 63 and the frame mold base 61. 64 is provided.

Then, the four outer mold members 62 are brought together so as to form a square in plan view, thereby forming the outer mold 6.
is formed, while the four unit inner mold members 63 are brought together so that the respective side edges abut against the central portion of the frame mold base 61, whereby the inner mold 6b is formed. ing. A rectangular annular cavity 65 is formed between the outer die 6a and the inner die 6b in plan view.

On the frame base 61, two pairs of rail members 66 are laid vertically and horizontally, and a carriage 67 guided by each pair of rail members 66 is provided. Are supported by a pair of trolleys 67. As a result, the unit outer mold member 62 is connected to the rail member 6.
When the cavity 65 is formed, the carriage 67 is moved toward the inner mold 6b while the concrete unit 9 formed in the cavity 65 is moved. When removing the mold,
Each carriage 67 is separated from the inner mold 6b, so that the concrete unit 9 can be opened.

Reinforcing bars are prearranged in the cavities 65 of the frame die 6 (for example, reinforcing bars are formed when the inner die 6b is formed, and thereafter, the outer die 6a is formed).
After the ready-mixed concrete is poured into the reinforced cavity 65, the steam from the boiler 5 is removed from the unit outer mold member 6.
The concrete unit 9 is formed by heating and curing the ready-mixed concrete by supplying it into the inside 2.

FIG. 4 is a partially cutaway perspective view showing an embodiment of the unit outer mold member 62. As shown in FIG. As shown in the figure, the unit outer die member 62 is formed by processing an iron plate having a predetermined thickness, and has a rectangular front plate 62a, a rear plate 62b having the same dimensions as the front plate 62a, and It is formed in a flat rectangular parallelepiped shape including a pair of side plates 62c provided between both side portions of the front plate 62a and the back plate 62b, a bottom plate 62d having a closed bottom, and a top plate 62e having a closed top.

The unit outer mold member 62 has a jacket 7 for introducing steam formed therein. The jacket 7 includes a corrugated plate 71 in contact with the back plate 62b, and a partition plate 72 parallel to the front plate 62a that separates the inside of the unit outer member 62 from the corrugated plate 71 in a sealed state. ing.

The corrugated plate 71 has a vertical dimension on the rear plate 62.
b, which is shorter than the vertical dimension of b, and whose lower end edge is fixed to an arcuate plate 73 having an arc shape in side view, thereby distributing the steam introduced between the arcuate plate 73 and the bottom plate 62d. And corrugated plate 7
A plurality of steam passages 71a extending in the up-down direction are formed between the first and back plates 62b. Therefore, the steam introduced into the distribution chamber 73a through the steam introduction pipe 74 provided below the pair of side plates 62c is distributed to the respective steam passages 71a, so that the back plate 62b is uniformly heated, and The heat is transferred to the ready-mixed concrete in the cavity 65.

A gap is formed between the top of the arcuate plate 73 and the top plate 62e, and a drain is formed between the partition plate 72 and the corrugated plate 71 for passing a drain formed by condensation of steam. A passage 72a is formed. A drain extraction pipe 75 is connected to a lower portion of the center of the partition plate 72 in the horizontal direction. This drain extraction pipe 7
Numeral 5 penetrates the front plate 62a and protrudes to the outside, so that the drain accumulated in the partition plate 72 is led to the outside through the drain extraction tube 75.

A heat insulating material loading chamber 72b is formed between the partition plate 72 and the front plate 62a.
By loading the heat insulating material 72c such as glass wool into 2b, heat radiation to the outside of the steam heat is reliably prevented.

A predetermined number of steam discharge holes 62f are formed at the upper position of the back plate 62b, and a part of the steam in the steam passage 71a is discharged toward the cavity 65 from the steam discharge holes 62f. Thus, the upper portion of the ready-mixed concrete in the cavity 65 is cured. In order to prevent the steam released from the steam discharge holes 62f from being diffused into the atmosphere, during the curing period, as shown by a two-dot chain line in FIG. The cover 68 is shaped like a lid.

Then, as shown in FIG.
The steam pipe 76 and the drain recovery pipe 77 on the frame die 6 side corresponding to the steam pipe 53 and the drain recovery pipe 54 on the boiler 5 side are laid around 1. A flexible pipe 76a for steam is branched from the steam pipe 76 via a valve, and a flexible pipe 77a for drain is also branched from a drain recovery pipe 77. The flexible pipe 76a for steam is connected to a steam introduction pipe 74. And the drain flexible tube 77 a is connected to the drain extraction tube 75.

Therefore, the steam generated in the boiler 5 is supplied to the steam pipes 53 and 76 and the flexible tube 76a for steam.
And the steam passage 71a through the steam introduction pipe 74
(FIG. 4), the unit outer mold member 62 is heated to be used as a heat source for the heat curing treatment of the ready-mixed concrete, and is condensed to become a drain, a drain passage 72a, a drain extraction pipe 75, and a drain flexible. The liquid is collected in the drain collecting tank 52 through the pipe 77a and the drain collecting pipes 77 and 54. The drain collected in the drain collection tank 52 is returned to the boiler main body 51 and is reused as raw water for steam.

As described in detail above, the present invention relates to a frame mold 6 for forming a cavity 65 for loading ready-mixed concrete by combining a plurality of unit outer mold members 62.
And a boiler 5 for supplying steam for heating and curing the ready-mixed concrete in the cavity 65. The apparatus 1 for manufacturing a concrete unit is provided along a frame type arrangement field 2 in which a plurality of frame types 6 are arranged. A rail 3 is laid as described above, and a movable building 4 that moves on the rail 3 is provided. Since the boiler 5 is installed on the movable building 4, a plurality of frame dies 6 are arranged in the frame array 2. In this state, ready-mixed concrete is sequentially loaded into the cavities 65 of the respective frame molds 6,
By moving the movable building 4 along the rails 3 at the position of the frame 6 where the loading has been completed, and supplying steam from the boiler 5 installed in the movable building 4 to the frame 6,
The ready-mixed concrete in the cavity 65 receives heat from steam and is cured by heating.

Then, a boiler 5 for generating steam for heating and curing moves on a movable building 4 on which rails 3 are freely moved.
Since the movable building 4 is moved to a required position of the frame die 6, the frame die 6 can be brought into a state close to the boiler 5.

Therefore, when the boiler 5 is immovably installed at a fixed position in the factory premises as in the prior art, a long steam pipe is constructed up to the frame type position and the steam from the boiler 5 is steamed. Must be supplied to the frame mold,
In addition to the increase in the cost of laying the pipes, the temperature of the steam decreases during the movement of the pipes and the thermal efficiency deteriorates, and the temperature of the steam applied to the frame 6 varies depending on the distance from the boiler 5, and the uniform heating and curing treatment is performed. However, according to the present invention, such inconvenience does not occur, the thermal efficiency is improved, the steam temperature is not varied, and concrete can always be cured under uniform conditions.

The frame type arrangement field 2 is formed so that a plurality of frame types 6 can be arranged in series, and the rails 3 are arranged in the longitudinal direction of the frame type arrangement field 2 laid with the frame type arrangement field 2 interposed therebetween. The movable building 4 is configured to run on the rails 3 while straddling the respective frame dies 6, so that the plurality of frame dies 6 are arranged in a row in the frame type arrangement field 2. By moving the movable building 4 along the rails 3 in a state where are arranged, the movable building 4 can be easily moved to the position of the frame die 6 where steam is required. In addition, the working frame 6
Is covered by the ceiling of the mobile building 4, so that the work can be performed without being exposed to rainwater even in rainy weather, and workability is improved.

Further, since the hoist crane 48 is provided on the ceiling of the mobile building 4, the hoist crane 48 provided on the ceiling must be operated while the mobile building 4 is located at the frame-type position. As a result, the cavity 65 of the frame mold 6
The loading of ready-mixed concrete into the concrete is easily performed, thereby improving the workability.

The unit outer mold member 62 constituting the frame mold 6
Is provided with a steam passage 71a through which steam is passed, and the steam from the boiler 5 is supplied to the steam passage 71a.
The ready-mixed concrete in 5 obtains heat by the heat transfer from the abutting surface of the frame mold 6, and the heat transfer state becomes uniform, and uniform heating of the ready-mixed concrete without variation can be realized.

Therefore, as in the conventional case, the heat insulating cover is not
When heating and curing the ready-mixed concrete by introducing steam into the heat-insulating cover, heat is applied to the ready-mixed concrete exposed to the outside and the ready-mixed concrete in the portion in contact with the frame 6. While the transfer is not uniform, the heat transfer through the frame 6 from the outside has the disadvantage that the heat transfer efficiency decreases and the energy cost increases.
According to the present invention, such inconveniences are solved, and it is possible to contribute to shortening the curing time and reducing energy costs.

Further, the steam generated in the boiler 5 is used as a heat source for curing in the unit outer mold member 62 and then condensed to form a drain. The drain is collected in a drain collection tank 52 and is collected in the boiler main body. Since it is returned to 51 and is reused as raw water for steam, the heat of 80 ° C. to 90 ° C. held by the drain can be effectively utilized without radiating heat, contributing to a reduction in energy costs. be able to.

Next, an example of the concrete unit 9 manufactured by the apparatus of the present invention will be described. FIG.
Is a concrete unit 9 manufactured by the frame mold 6
1A is an exploded perspective view, and FIG. 1B is an assembled perspective view. As shown in FIG.
The concrete unit 9 includes a lower structure 91 having a bottom,
It is composed of a rectangular tubular upper structure 92 stacked on the lower structure 91.

The upper and lower structures 91 and 92 are manufactured by the same frame 6. That is, the lower structure 91
Is manufactured in a state where the top and bottom are inverted by pouring ready-mixed concrete into the frame mold 6, while the upper structure 92 is
Are manufactured without being turned upside down. Then, when constructing the concrete unit 9, FIG.
As shown in the figure, the lower structure 91 is returned from the inversion to the original state,
By stacking the upper structure 92 on the lower structure 91, a concrete unit 9 as shown in FIG. 5B is formed.

In the lower structure 91, a basket-shaped reinforcing member 93 formed by arranging a reinforcing bar is mounted, and in the upper structure 92, a cylindrical reinforcing member 94 is mounted. The concrete unit 9 is structurally strong. A step edge 91 a is formed annularly at the upper edge of the lower structure 91, while a step edge corresponding to the step edge 91 a of the lower structure 91 is formed at the lower edge of the upper structure 92. 92a are formed, and these step edge portions 91a,
By fitting the 92a with each other, the lateral displacement of the upper and lower structures 91 and 92 is reliably prevented.

If the method of the present invention is adopted, such a concrete unit 9 can be sequentially manufactured systematically by running the movable building 4, whereby a very large structure can be obtained. However, the concrete unit 9 which has been conventionally considered to be unsuitable for mass production can be efficiently manufactured in large quantities, and the contribution to the cost reduction of the concrete unit 9 is extremely large.

The present invention is not limited to the above embodiment, but includes the following contents.

(1) In the above embodiment, a pair of rails 3 is used as a moving path. However, the present invention is not limited to the case where the moving path is a rail. It may be a formed concrete passage or an erecting rail installed between columns. When a concrete path is used as the moving path, tire wheels may be used as the wheels of the moving building 4. When an erecting rail is used as the moving path, the moving building 4 may be moved in a suspended state suspended from the erecting rail.

(2) In the above embodiment, the frame forms are arranged in two rows in the frame form arrangement field 2, but the present invention is limited to the case where the frame forms are arranged in two rows. Not something
One line may be provided, or three or more lines may be provided.

(3) In the above embodiment, the frame mold 6
As an example, description has been given of an example for manufacturing a concrete unit 9 for housing construction, but the present invention is limited to the case where the frame die 6 is for manufacturing a concrete unit 9 for house building. However, the present invention can be applied to the production of any concrete structure from dihedron (concrete unit having an L shape in side view) to hexahedron.

[0059]

EXAMPLES In order to confirm the effects of the present invention, when a concrete unit 9 was manufactured by the method for manufacturing a concrete unit 9 of the present invention, the amount of heat loss of steam was estimated and estimated. A trial calculation was also made for the case where the concrete unit 9 was manufactured by the conventional method for manufacturing the concrete unit 9. The trial calculation conditions and the trial calculation results are as shown in Table 1. As the basic unit in this estimation, a value described in a handbook widely distributed was adopted.

[0060]

[Table 1]

As shown in this table, in the comparative example, the heat loss per hour of steam used for the curing treatment of the concrete unit 9 was 19,500 Kcal (81,62).
7,000 joules), whereas in the present invention the heat loss of steam per hour is 200 Kcal.
(837,200 joules), which was 1/100 of the comparative example.

This proves that the method of the present invention greatly contributes to the reduction of energy cost in the production of the concrete unit 9, and it can be seen that this method is also extremely excellent.

[0063]

According to the first aspect of the present invention, there is provided a moving path laid along a frame type arrangement field for arranging a plurality of frame forms, and a moving body moving on the moving path, Since the boiler was installed on this moving body, the ready-mixed concrete was sequentially loaded into the cavities of each frame type with multiple frame types arranged in the frame type array field, and moved to the position of the frame type where loading was completed By moving the body along the moving path and supplying steam from the boiler installed on the moving body to the frame, the ready-mixed concrete in the cavity obtains heat from the steam and the chemical reaction between the constituent components An accelerated, so-called heat curing process can be performed.

Since the boiler for generating steam for heating and curing is installed on a moving body that freely moves along the moving path, the moving body is moved to a required frame-type position to thereby bring the boiler closer to the boiler. Can be placed in a state where the frame is positioned.

Therefore, when the boiler is immovably installed at a fixed position in the factory premises as in the prior art, a long steam pipe is constructed to the frame-type position and the steam from the boiler is framed. In addition to the cost of laying the piping, the temperature of the steam drops during the movement of the piping and the thermal efficiency deteriorates, and the steam temperature given to the frame mold varies depending on the distance from the boiler, Although there was a problem that uniform heat curing treatment could not be performed,
According to the present invention, such a problem is solved by moving the boiler to the frame-type position, the thermal efficiency is improved, and the steam temperature is not dispersed, and the concrete can be cured under the uniform curing conditions at all times. .

The steel formed inside the frame-shaped wall is
Boiler via a pipe joint that can be attached to and detached from the
These steam supply and steam drain
Is returned to the boiler, so the drain holds
Heat can be used effectively without dissipating heat.
And contribute to lower energy costs
You.

According to the second aspect of the present invention, the frame type arrangement field is formed so that a plurality of frame types can be arranged in series, and the moving path is a frame laid with the frame type arrangement field interposed therebetween. Formed by a pair of rails extending in the longitudinal direction of the mold arrangement field,
Since the moving body is configured to be able to run on the rail while straddling the respective frame forms, the moving body is allowed to travel along the rails in a state where a plurality of frame forms are arranged in a line in the frame form arrangement field. Thereby, the steam can be easily moved to the required frame-shaped position. Then, since the moving body travels on a pair of rails laid with the frame type arrangement field interposed therebetween, the moving body straddles the frame type, and a stable traveling state can be obtained. Further, since the frame during operation is covered by the ceiling portion of the moving body, the operation can be performed without being exposed to rainwater even in rainy weather, and the workability can be improved.

According to the third aspect of the present invention, since the crane device is disposed on the ceiling of the moving body, the crane provided on the ceiling can be operated while the moving body is located at the frame-shaped position. This makes it possible to easily perform various manufacturing operations such as loading ready-mixed concrete into the cavity, assembling the frame mold, and cutting the mold after the concrete unit is formed, contributing to improved workability and productivity. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a concrete unit manufacturing apparatus according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a connection state between a boiler and a frame die.

FIG. 4 is a partially cutaway perspective view showing one embodiment of a unit outer die member.

FIG. 5 is a perspective view showing an embodiment of a concrete unit manufactured by a frame mold, (A) is an exploded perspective view, and (B) is an assembled perspective view.

FIG. 6 is an explanatory view for explaining a conventional concrete unit manufacturing apparatus, in which (a) is a plan view and (b) is a side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Concrete unit manufacturing apparatus 2 Formwork arrangement field 21 Work area 22 Formwork arrangement area 23 Temporary storage area 24 Mixer truck passing area 25 Inversion sandbox 3 Rail 4 Moving building 41 Support column 42 Side wall 43 Beam material 44 Roof support 45 Roof 46 Operator's cab 47 Wheels 48 Hoist crane 48a Club trolley 48b Hopper 5 Boiler 50 Boiler room 51 Boiler main body 52 Drain recovery tank 53 Steam piping 54 Drain recovery piping 55 Drain return piping 56 Quick joint (Piping joint) 6 Frame type 6a Outer die 6b Inside Mold 61 Frame mold base 62 Unit outer mold member 62a Front plate 62b Back plate 62c Side plate 62d Bottom plate 62e Top plate 62f Steam discharge hole 63 Unit inner mold member 64 Platform 65 Cavity 66 Rail member 67 Truck 68 Lid 7 Racket 71 Corrugated plate 71a Steam passage 72 Partition plate 72a Drain passage 72b Insulation material loading chamber 72c Insulation material 73 Arc plate 73a Distribution room 74 Steam introduction tube 75 Drain extraction tube 76 Steam piping 76a Flexible tube for steam 77 Drain recovery piping 77a Drain Flexible tube 9 Concrete unit C Mixer truck M Work machine H Reinforced body

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B28B 11/00 B28B 17/00 C04B 40/00-40/06

Claims (3)

(57) [Claims] 1. A concrete unit manufacturing apparatus comprising: a frame mold having a cavity for loading ready-mixed concrete; and a boiler for supplying steam for heating and curing the ready-mixed concrete in the cavity, A moving path laid along a frame type arrangement field for arranging a plurality of the frame forms and a moving body moving on the moving path are provided, and the boiler is installed on the moving body , and
The frame type has a steam passage formed inside the wall.
Then, the above-mentioned boy
Is supplied from the
Steam after being used as a heat source for heat curing
A concrete unit manufacturing apparatus, characterized in that the drain is returned to the boiler . 2. The frame type arrangement field is formed so that a plurality of frame types can be arranged in series, and the moving path is a pair extending in the longitudinal direction of the frame type arrangement field laid with the frame type arrangement field interposed therebetween. 2. The concrete unit manufacturing apparatus according to claim 1, wherein the movable body is formed by a rail of the type described above, and the movable body is configured to be able to travel on the rail while straddling the respective frame forms. 3. The concrete unit manufacturing apparatus according to claim 2, wherein the moving body has a crane device disposed on a ceiling portion.