JPH0857841A - Supply equipment of steel fiber for batcher plant - Google Patents

Abstract

PURPOSE: To perform swiftly and precisely supply of continuous steel fibers by repeating every mixer/batch, by a method wherein operations each of the primary hopper, a conveying device, the secondary hopper and a measuring hopper are controlled while relating them each other. CONSTITUTION: A steel fiber is stocked on a yard by a flexible conveyor bag 17. The flexible conveyor bag 17 is transferred to the upper part of the primary hopper 1 by a crane 6, unpacked and steel fibers commensurate with concrete mixed with the steel fiber of day's use is stored within the primary hopper 1. The steel fibers are discharged continuously by becoming a fixed stratified state by driving by an exciting device within the primary hopper 1, loaded into the secondary hopper 3 provided on the top part of a ready mixed concrete plant by a flexible conveyor 2 and stored. The steel fiber is discharged by becoming a fixed stratified state by driving by the exciting device within the secondary hopper 3, after the steel fiber corresponding to one batch of a mixer 5 is measured and stored by a measuring hopper 4 and loaded in the lump into the mixer 5 kneading the concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete-reinforcing steel fiber (hereinafter abbreviated as steel fiber) in a batcher plant commonly referred to as a ready-mixed plant for introducing various materials for concrete into a mixer in a predetermined composition. The present invention relates to a steel fiber supply facility for supplying a steel to a mixer.

[0002]

2. Description of the Related Art Conventionally, when supplying a steel fiber to a mixer, the following procedure has been performed. First, make a steel fiber in a cardboard box with a packaging weight of 20 kg that can be carried by a person,
This is made into a palletized steel fiber with a general-purpose forklift that can be loaded and unloaded on a truck, for example, with a packing weight of 1 ton, and then this is used as a raw concrete near the construction site using steel fiber mixed concrete. After transporting to the plant, this palletized steel fiber is carried by a hoist crane equipped with ready-mixed plant or manually to the deck floor above the mixer inlet in the ready-mixed plant, and after manually opening the cardboard box While checking the fixed number of boxes from the slight gap of the hopper chute into which the aggregate and sand etc. are put, the steel fibers are manually dropped into the mixer to mix and mix the steel fibers into the concrete. Was.

[0003]

Such a conventional steel fiber supplying means requires a lot of manpower and a long time to carry the steel fiber into the raw concrete plant and to load it into the mixer. In addition, there is a problem that the accuracy of the input is unavoidable and the product quality of the steel fiber-mixed concrete is adversely affected due to the fact that the scientific control relies on human operation that is not sufficient.

The present invention has been made in order to solve such problems, and an object of the present invention is to improve productivity under scientific control by mechanical feeding and supplying without manpower. An object of the present invention is to provide a steel fiber supply facility for a batcher plant capable of producing high-quality and low-cost steel fiber-mixed concrete by achieving the improvement.

[0005]

The present invention has the following constitution in order to achieve the above object. That is, the present invention comprises a main body which is formed in a container having an inlet opening on the upper surface and an outlet opening on the front surface, and which is supported by a pedestal through a spring member, and a vibrating device attached to the main body. The steel fiber charged from the charging port is stored in the main body in a predetermined amount, and the main body is vibrated by the vibrating device so that the amplitude of the front part is larger than that of the rear part, so that A primary hopper capable of discharging a fixed amount of steel fibers in a layered manner sequentially to the discharge port and extending from below the discharge port of the primary hopper to above the top of the batcher plant located higher than this primary hopper. Conveying means arranged to receive the steel fiber discharged from the discharge port at the carry-in side end part and carry it to the carry-out side end part at a set traveling speed; Outlet are opened respectively to the front,
Further, the main body of the primary hopper is formed in a container having a smaller capacity than that of the main body and is supported by a pedestal with a spring member interposed therebetween, and a vibrating device attached to the main body. Below the discharge side end of the conveying means, the discharge port is provided above the mixer provided at the top of the batcher plant, and a predetermined amount of the steel fiber charged from the charging port is stored in the main body, By vibrating the vibrating device so that the amplitude of the front part becomes larger than that of the rear part with respect to the main body, it is possible to sequentially discharge the steel fibers during storage in a layered form with a constant thickness to the discharge port to quantitatively discharge. It is located directly above the mixer below the secondary hopper and the outlet of the secondary hopper, receives the steel fiber discharged from the secondary hopper, weighs it, and outputs it to the mixer at regular intervals. A batcher plant for steel fiber supply equipment, characterized in that it comprises a weighing hopper for output.

The present invention is also characterized in that each of the main bodies of the primary hopper and the secondary hopper has a front part having a lighter structure than a rear part, and the rigidity of the front part is reduced. , And the main body of the primary hopper and the secondary hopper,
The vibrating device is supported by the pedestal through spring members at four supporting points in the front, rear, left and right, which are set to positions where the distance from the front end is greater than the distance from the rear end. It is characterized by comprising a vibration motor capable of controlling the above, and is attached to a middle portion of the main body closer to the rear side support point than the front side support point.

According to the present invention, in the above-mentioned steel fiber supply equipment for batcher plant, steel fiber receiving means is additionally provided in association with the outlet of the secondary hopper, and the steel fiber receiving means is the above-mentioned means. In response to the weighing hopper weighing a certain amount, the steel fiber receiving portion is swung below the discharge port, and the forward movement is performed to receive the steel fiber dropped due to the aftershock, and the weighing hopper discharges the steel fiber. In response to the completion of the operation, the steel fiber for the batcher plant is swung to the lower side of the discharge port to return the steel fiber in the steel fiber receiving portion to the weighing hopper. It is a supply facility.

The present invention also provides a vibration device for a secondary hopper,
It is characterized in that it is driven in response to the start of weighing of the weighing hopper and is stopped in response to the end of weighing of the weighing hopper, and further, the secondary hopper weighs the upper limit storage amount and the lower limit storage amount. It is characterized in that it has a weighing function, and the conveying means and the vibration device of the primary hopper are driven in response to the measurement of the lower limit storage amount, and are stopped in response to the measurement of the upper limit storage amount.

[0009]

According to the present invention, in the batcher plant, for example, a steel fiber amount of 4 t, which is the steel fiber amount corresponding to the daily usage amount of the steel fiber-mixed concrete, is charged and stored in the primary hopper by mechanical force.
This primary hopper having a vibrating device is configured such that the vibration is applied to the main body by the vibrating device so that the amplitude of the front part is larger than that of the rear part. It can be sent out sequentially to and discharged in a fixed amount. In this case, the discharge speed can be easily and accurately controlled by adjusting the vibration frequency and amplitude of the vibrating device and by adjusting the front-back inclination angle of the main body.

The steel fiber continuously discharged from the primary hopper is transported to the top of the batcher plant by a transport means such as a flex conveyor and stored in a secondary hopper provided above the top. The secondary hopper has a small capacity structure as compared with the primary hopper, and stores steel fibers corresponding to several times the weight of steel fibers corresponding to one batch of the concrete mixer provided below the secondary hopper. In this secondary hopper, vibration is applied by the vibrating device so that the amplitude of the front part is larger than that of the rear part with respect to the main body, and the steel fibers being stored are sequentially sent out to the discharge port in a layered form with a constant thickness. Can be discharged in a fixed amount. In this case, the discharge speed can be easily and accurately controlled by adjusting the vibration frequency and amplitude of the vibrating device and by adjusting the front-back inclination angle of the main body, as in the case of the primary hopper.

The steel fiber discharged from the secondary hopper is dropped into the measuring hopper below by gravity drop or chute, and the steel fiber corresponding to one batch of the concrete mixer is weighed and stored, and then mixed with concrete. It is thrown into the inside mixer all at once. By controlling the operations of the primary hopper, the transporting means, the secondary hopper, and the weighing hopper in association with each other, continuous steel fiber supply by repeating each batch of the mixer can be performed without mechanical labor. Promptly using
And it is done accurately.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic elevation view of a steel fiber supply facility for a batcher plant according to an embodiment of the present invention, and FIG. 2 is a schematic plan view of the same. Also,
3, 4, and 5 are a front view, a plan view, and a side view showing a main part structure of the above embodiment. The steel fiber supply equipment shown in each of these drawings has almost the same structure except that the primary hopper 1, the conveying means 2 realized by a flex conveyor, and the primary hopper 1 have a small capacity. It is configured to include a hopper 3 and a weighing hopper 4.
This steel fiber supply equipment is provided so as to be attached to a batcher plant, which is commonly called a raw concrete plant, and is distributed, for example, between a yard 8 having a stock field 7 and the like, and a mixer 5 provided at the top of the batcher plant. Set up. In the stock field 7, a large amount of steel fibers packed in a flexible container bag are transferred by the crane 6 and stored therein in an appropriate amount, and the steel fibers unpacked and taken out from the flexible container bag are supplied to the steel fiber supply. The mixer 5 is automatically supplied by the equipment.

The primary hopper 1 is provided in the yard 8 adjacent to the stock field 7. The conveying means 2 realized by a flex conveyor is composed of a mixer 5 and a lower portion of the primary hopper 1.
And is extended in an upward slope arrangement form so as to extend between the upper part and the upper part. The secondary hopper 3 is installed below the upper end which is the end of the flex conveyor 2 on the delivery side, and the weighing hopper 4 is installed below the secondary hopper 3 and directly above the mixer 5. In this way, the primary hopper 1, the flex conveyor 2, the secondary hopper 3, and the weighing hopper 4 are arranged in this order from the upstream side of the physical distribution to form a series of supply equipment for conveying and supplying the steel fiber. In addition, in FIG. 2, 9 is a conveyor that is juxtaposed with the flex conveyor 2, and is provided as a conveying means for supplying cement, aggregate, gravel and the like to the mixer 5.

6, FIG. 7 and FIG. 8 are a front view, a plan view and a side view, respectively, showing the main structure of the primary hopper 1. Referring to these drawings, the primary hopper 1 has a substantially rectangular parallelepiped shape having a longer depth before and after the inlet is opened on the upper surface and the outlet is opened on the front (right end surface in FIG. 6). From a main body 10 formed in the container, and a vibrating device 11 realized by a pair of vibration motors 11A and 11B integrally and fixedly attached to an intermediate portion of the main body 10, for example, lower portions of left and right side surfaces Made of The main body 10 is formed into a rectangular parallelepiped rigid container surrounded by a bottom plate, a rear plate, and left and right side plates by forming a steel plate and a steel plate as an aggregate. This bottom plate has a smooth flat surface on which a considerable amount of steel fibers are mounted.

The main body 10 is supported at four support points on the front, rear, left and right with respect to the gantry 12 so as to be able to vibrate slightly with a spring member 13 made of, for example, a compression coil spring interposed, and is moved forward and downward in the front and rear direction. With an inclination of about 3 °,
It is attached to the pedestal 12 while keeping horizontal in the left-right direction. In this case, the four front, rear, left and right support points are selected so that the distance from the front end to the front support point is larger than the distance from the rear end to the rear support point.
The main body 10 is also formed by cutting off the front upper corners of the left and right side plates in a triangular shape with the front falling downward, thereby lowering the rising dimension of the left and right side walls at the front discharge port. Thus, the front portion is made lighter than the rear portion, and the rigidity of the front portion is lowered. on the other hand,
The pair of vibration motors 11A and 11B are attached to the lower portions of the left and right side surfaces of the intermediate portion of the main body 10 at positions closer to the rear support points than the front support points, with the rotation shaft inclined forward and backward.

In the primary hopper 1 thus constructed, when the vibration motors 11A and 11B are driven to give vibration to the main body 10, the rigidity of the front portion is lowered and the distance from the front end portion to the front support point is reduced. Is larger than the distance from the rear end portion to the rear side support point, the amplitude of vibration applied to the main body 10 is larger in the front portion than in the rear portion, and is further supported in the front-down direction in the front-rear direction. Due to the arrangement, the steel fibers stored in the main body 10 can be stably and smoothly sequentially delivered toward the discharge port. The vibration frequency can be adjusted by controlling the rotation speeds of the vibration motors 11A and 11B, and the amplitude can be adjusted by adjusting the eccentric amount of the counter weight of the vibration motor. By adjusting the amplitude and the inclination angle of the main body 10, the cutting ability of discharging from the discharge port can be arbitrarily controlled. The primary hopper 1 can accommodate, for example, 4 t of steel fiber, and the cutting capacity is 20 t /
H.

As shown in FIGS. 3 to 5, the conveying means 2 realized by a flex conveyor is a primary hopper 1 as shown in FIGS.
Right below the discharge port, the loading-side end that is horizontally extended and provided, the intermediate transport part that is continuous and obliquely installed to this loading-side end, and the intermediate transport part that continues to this intermediate transport part. And a carry-out side end that is provided horizontally extending above the mixer 5 provided at the top of the batcher plant, and receives the steel fiber discharged from the discharge port at the carry-in side end. It is provided so as to be transported to the end portion on the unloading side through the intermediate transport portion at a set traveling speed and to be loaded into the main body of the secondary hopper 3 described later.

FIGS. 9, 10 and 11 show the structure of the main part of the secondary hopper 3 in a front view, a plan view and a side view, respectively. Referring to these drawings, the secondary hopper 3 has a primary structure with a primary structure except that the secondary hopper 3 has a small capacity and a different shape, and a steel fiber receiving means 14 is additionally provided. Since it is the same as hopper 1,
Description of common structures will be omitted, and different parts will be described below. The secondary hopper 3 is provided such that the loading port on the upper surface faces directly below the unloading side end of the transporting unit 2 and the loading port faces above the loading port of the weighing hopper 4. The vibrating device 11 provided in this hopper is formed of one vibration motor 11A, and is attached on the center line of the main body 10 in the front-rear direction. The secondary hopper 3 can accommodate, for example, 0.8 t of steel fiber, and has a cutting capability of discharging from a discharge port of 7.2.
After receiving the steel fiber of t / H falling from the end of the carrying-out side of the conveying means 2 and storing it within the range of 0.2 to 0.8 t, the steel fiber of 7.2 t / H is changed by the vibration action. It discharges from the discharge port to the input port of the weighing hopper 4. Although the structure is not shown,
The main body of the secondary hopper 3 is provided with a weighing function realized by a load cell so that an upper limit storage amount such as 0.8t and a lower limit storage amount such as 0.2t can be detected and an electric signal can be transmitted. Is formed in.

The steel fiber receiving means 14 is associated with the outlet of the secondary hopper 3 and below it, the weighing hopper 4 is provided.
Is provided directly above. The steel fiber receiving means 14 is composed of an air cylinder 15 and a shovel 16, the head end of the cylinder of the air cylinder 15 is rotatably supported on a mount, and the bottom of the shovel 16 is of the air cylinder 15. It is connected to the rod end and the upper edge is swingably supported by the mount. In the steel fiber receiving means 14 having such a structure, when the rod of the air cylinder 15 is extended, the shovel 16 advances immediately below the discharge port of the secondary hopper 3 to make the reception port face upward and drop from the discharge port. When the rod is shortened, it moves forward to receive the steel fiber
Retreat to the lower side of the discharge port, make the receiving port face downward, and return the steel fiber which is being received to the input port of the weighing hopper 4 below.

The weighing hopper 4 is provided so that the upper inlet is directly below the outlet of the secondary hopper 3 and the lower outlet with shutter is above the inlet of the mixer 5. The weighing hopper 4 has a weighing function using a load cell or the like, and when a batch of the mixer 5 corresponding to one batch of, for example, 80 kg of steel fiber is stored, an electric signal is transmitted,
It is formed so that the shutter of the discharge port is opened and the steel fibers being stored are put into the mixer 5 all at once.

In the embodiment described above, the steel fiber is automatically supplied in the following manner. As the steel fiber used in this case,
It is preferable that the both sides are modified to have a slenderness ratio of about 100 to 40 and have no entanglement. The steel fiber is transported by truck from the factory to the ready-mixed plant as a high-weight packing of 1 ton in the flexible container bag 17, unloaded in the yard 8, and stocked in an appropriate amount. The stocked flexible container bag 17 was transferred to the upper side of the primary hopper 1 by the crane 6, and the steel fiber was dropped into the primary hopper 1 by unpacking, which corresponded to the daily usage amount of concrete mixed with steel fiber in the ready-mixed plant. For example, 4t of steel fiber is stored in the primary hopper 1.

When the vibrating device 11 of the primary hopper 1 is driven, the main body 10 is vibrated so that the amplitude of the front part is larger than that of the rear part, and as a result, the steel fiber during storage has a constant thickness. Are continuously discharged from the discharge port in a layered manner, then conveyed to the top of the ready-mixed plant by the flex conveyor 2 and put into the secondary hopper 3 provided at the top, for example, 0.8 kg of steel fiber is stored. It Here, the vibrating device 11 of the secondary hopper 3 is driven, so that the steel fiber being stored becomes a layer having a constant thickness, is discharged from the discharge port, and is charged into the weighing hopper 4. In this weighing hopper 4, the mixer 5
Mixer 5 in which concrete is kneaded after the steel fiber equivalent to one batch is weighed and stored.
Are supplied and supplied in batch. The capacity of the mixer 5 is, for example, 1 m
^If the volume mixing ratio of steel fiber to concrete is 1% in ³ , the weight of steel fiber corresponding to one batch of the mixer 5 is 80 kg.

When 80 kg of steel fiber is stored in the weighing hopper 4, an electric signal is transmitted, the vibration device 11 of the secondary hopper 3 is stopped, and at the same time, the steel fiber receiving means 14 is moved forward. Therefore, the small amount of steel fiber dropped from the secondary hopper 3 due to the aftershock is received by the shovel 16, and therefore the weighing accuracy in the weighing hopper 4 is enhanced. The steel fiber received by the shovel 16 is put into the hopper at the time of storage and weighing in the next weighing hopper 4.

Due to the secondary hopper 3 having the weighing function, when the steel fiber storage amount reaches the lower limit storage amount of 0.2 t, an electric signal is emitted and the primary hopper 1 and the flex conveyor 2 start driving. Then, the steel fiber is supplied from the primary hopper 1 to the secondary hopper 3. On the other hand, when the steel fiber storage amount reaches the upper limit storage amount of 0.8 t, an electric signal is emitted, the primary hopper 1 and the flex conveyor 2 stop driving, and the steel from the primary hopper 1 to the secondary hopper 3 is stopped. Fiber supply is interrupted. By repeating the above, it is possible to mechanically and quickly supply the steel fiber to the mixer 5 in a quick and accurate amount without requiring any manpower.

[0025]

As described above, according to the present invention, the operations of the primary hopper, the conveying means, the secondary hopper, and the weighing hopper are controlled in association with each other, so that the continuous steel operation is repeated by repeating each batch of the mixer. Fiber supply can be performed quickly and accurately with the help of mechanical force without the need for manpower, and the quality of steel fiber-mixed concrete can be stably improved and the efficiency of concrete construction work can be improved. Can be expected.

[Brief description of drawings]

FIG. 1 is an elevational view schematically showing the structure of a steel fiber supply facility for a batcher plant according to an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a front view showing a main part structure of the embodiment shown in FIG.

FIG. 4 is a plan view showing a main part structure of the embodiment shown in FIG.

FIG. 5 is a side view showing a main part structure of the embodiment shown in FIG.

FIG. 6 is a front view of the primary hopper 1 shown in FIG.

FIG. 7 is a plan view of the primary hopper 1 shown in FIG.

8 is a side view of the primary hopper 1 shown in FIG.

FIG. 9 is a front view of the secondary hopper 3 of the embodiment shown in FIG.

10 is a plan view showing half of the secondary hopper 3 shown in FIG. 9. FIG.

11 is a side view of the secondary hopper 3 shown in FIG.

[Explanation of symbols]

1 ... Primary hopper, 2 ... Conveying means, 3 ... Secondary hopper, 4 ... Weighing hopper, 5 ... Mixer,
10 ... Main body, 11 ... Excitation device, 12 ... Stand,
13 ... Spring member, 14 ... Steel fiber receiving means,

Claims (6)

[Claims] 1. A main body, which is formed in a container having an inlet opening on an upper surface and an outlet opening on a front surface, is supported by a pedestal with a spring member interposed, and a vibrating device attached to the main body. , A predetermined amount of steel fiber charged from the charging port is stored in the main body, and vibration is applied to the main body by the vibrating device so that the amplitude of the front part is larger than that of the rear part, so that the steel during storage is stored. The primary hopper, which is capable of discharging a fixed amount of fibers in a layered structure with a certain thickness, is arranged one by one, and the fiber is extended from below the outlet of the primary hopper to above the top of the batcher plant located higher than the primary hopper. Is installed and receives the steel fiber discharged from the discharge port at the end on the carry-in side and conveys it to the end on the carry-out side at a set traveling speed. A main body, each of which has an opening on the front surface, is formed in a container having a smaller capacity than that of the main body of the primary hopper, and is supported by a mount via a spring member, and a vibration device attached to the main body. And a discharge port is provided below the carry-out side end of the conveying means, and a discharge port is provided above the mixer provided at the top of the batcher plant. A predetermined amount of the steel fiber is stored in the main body, and vibration is applied to the main body so that the amplitude of the front part becomes larger than that of the rear part, so that the steel fiber during storage is sequentially layered in a layer having a certain thickness to the outlet. A secondary hopper that can be sent out and discharged in a fixed amount, and a steel fiber that is installed just above the mixer below the discharge port of the secondary hopper and that receives the steel fiber discharged from the secondary hopper. Weighed, steel fiber supply equipment for batcher plant, which comprises a weighing hopper to release the mixer every certain amount Te. 2. A steel fiber for a batcher plant according to claim 1, wherein each of the main bodies of the primary hopper and the secondary hopper has a front part having a lighter structure than a rear part and a rigidity of the front part is reduced. Supply equipment. 3. The main body of the primary hopper and the main body of the secondary hopper have spring members interposed at four supporting points in the front, rear, left and right, which are set at positions where the distance from the front end is larger than the distance from the rear end. The oscillating device comprises a vibrating motor whose rotation speed can be controlled, and is attached to an intermediate portion of the main body closer to the rear supporting point than the front supporting point. Steel fiber supply equipment for batcher plant. 4. The steel fiber supply equipment for a batcher plant according to any one of claims 1 to 3, further comprising steel fiber receiving means associated with the discharge port of the secondary hopper, The steel fiber receiving means swings the steel fiber receiving portion below the discharge port in response to the weighing hopper weighing a fixed amount, and receives the steel fiber that falls due to aftershock. And in response to the end of the discharge of the steel fiber by the weighing hopper, the steel fiber in the steel fiber receiving portion is swung to the lower side of the discharge port and the returning operation of discharging the steel fiber to the weighing hopper is performed. Steel fiber supply equipment for batcher plant. 5. The vibrating device of the secondary hopper is driven in response to the start of weighing of the weighing hopper, and is stopped in response to the end of weighing of the weighing hopper. Steel fiber supply equipment for batcher plant. 6. The secondary hopper has a weighing function for measuring the upper limit storage amount and the lower limit storage amount, and the vibrating device of the conveying means and the primary hopper is driven in response to the measurement of the lower limit storage amount, The steel fiber supply equipment for a batcher plant according to any one of claims 1 to 5, which is stopped in response to the measurement of the upper limit storage amount.