JP2880083B2 - Steel fiber supply equipment for batcher plant - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel fiber for reinforcing concrete (hereinafter abbreviated as "steel fiber") in a batcher plant commonly used as a ready-mixed plant for putting various materials for concrete into a mixer in a predetermined mixture. For supplying steel fiber to a mixer.

[0002]

2. Description of the Related Art Conventionally, when a steel fiber is supplied to a mixer, it is performed in the following order. First, a steel fiber with a packing weight of, for example, 20 kg in a range that can be carried by a person is made in a cardboard box,
This is made into a palletized steel fiber with a packing weight of, for example, 1 ton in a range that can be loaded and unloaded on a truck using a general-purpose forklift, and this is then converted into a raw concrete near a construction site using concrete mixed with steel fiber. After transporting to the plant, this palletized steel fiber is manually lifted by a hoist crane equipped with a ready-mixed plant or to the deck floor above the mixer inlet in the ready-mixed plant, and the cardboard box is unpacked by hand. While checking the number of boxes determined through a small gap in the hopper chute into which the aggregates and sand are charged, the steel fibers are manually dropped into the mixer, and the steel fibers are mixed into the concrete and kneaded. Was.

[0003]

Such a conventional steel fiber supply means requires a lot of manpower and a long time to carry the steel fiber into the raw plant and to put it into the mixer. In addition, there is a problem in that since the scientific control relies on human operation that is not sufficient, inaccuracy of the input amount cannot be avoided and the product quality of the concrete mixed with steel fiber is adversely affected.

[0004] The present invention has been made to solve such problems, and an object of the present invention is to improve productivity under scientific management by mechanical conveyance without human intervention. It is an object of the present invention to provide a steel fiber supply facility for a batcher plant capable of producing high-quality, low-cost concrete mixed with steel fiber by realizing the improvement.

[0005]

The present invention has the following configuration to achieve the above object. That is, the present invention comprises a main body which is formed in a container having an input port opened on the upper surface and a discharge port opened on the front surface, and supported by a gantry with a spring member interposed therebetween, and a vibration device attached to the main body. The steel fiber supplied from the input port is stored in the main body in a predetermined amount, and the main body is subjected to vibration by the vibrating device so that the amplitude of the front part is larger than that of the rear part. A primary hopper capable of sequentially sending out steel fibers to the discharge port in a layer of a certain thickness and capable of quantitative discharge, and extending from below the discharge port of the primary hopper to above the top of the batcher plant at a position higher than the primary hopper. Arranged, a conveying means for receiving the steel fiber discharged from the discharge port at the input side end, and conveying the steel fiber to the output side end under the set traveling speed, and the input port is an upper surface, Outlet are opened respectively to the front,
Further, the main body of the primary hopper is formed in a container having a small capacity as compared with the main body of the primary hopper, the main body is supported by a gantry with a spring member interposed therebetween, and a vibrating device attached to the main body. A discharge port is provided above the mixer provided at the top of the batcher plant, below the discharge side end of the conveying means, and stores a predetermined amount of the steel fiber input from the input port in the main body, Vibration by the vibrating device is applied to the main body such that the amplitude of the front part becomes larger than that of the rear part, so that the steel fibers during storage can be sequentially sent out to the discharge port in a layered form having a constant thickness, thereby enabling constant discharge. A secondary hopper and a steel fiber discharged from the secondary hopper are provided below the outlet of the secondary hopper and provided immediately above the mixer.The steel fibers are discharged from the secondary hopper and weighed. 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 lighter structure at the front part than at the rear part and has a reduced rigidity at the front part. , And each body of the primary hopper and the secondary hopper is
At four front, rear, left and right support points set at a position where the distance from the front end is larger than the distance from the rear end, the support is supported by a gantry with spring members interposed therebetween, while each of the vibration devices has a rotational speed. , And is attached to the middle part of the main body closer to the rear support point than the front support point.

The present invention also provides the above steel fiber supply equipment for a batcher plant, wherein steel fiber receiving means is provided in association with the outlet of the secondary hopper. In response to the weighing hopper weighing a predetermined amount, the steel fiber receiving portion is swung below the discharge port to receive the steel fiber falling due to the after vibration, and the weighing hopper releases the steel fiber. The steel fiber in the steel fiber receiving portion is discharged to the weighing hopper by swinging downward to the lower side of the discharge port in response to the completion of the process. Supply equipment.

The present invention also provides a vibrating device for a secondary hopper,
It is driven in response to the start of weighing of the weighing hopper, and 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 has a weighing function, and the transportation 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 a batcher plant, for example, 4 tons of steel fiber, which is the amount of steel fiber corresponding to the daily usage of concrete mixed with steel fiber, is charged and stored in the primary hopper by mechanical force.
This primary hopper having a vibrating device is provided with a vibrating device that is vibrated by the vibrating device so that the amplitude of the front portion is larger than that of the rear portion of the main body. And can be discharged quantitatively. 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.

[0010] The steel fiber continuously discharged from the primary hopper is transported to the top of the batcher plant by transport means such as a flex conveyor, and stored in a secondary hopper provided above the top. The secondary hopper has a smaller capacity structure than the primary hopper, and stores steel fibers several times in proportion to the weight of steel fibers corresponding to one batch of a concrete mixer provided below. The secondary hopper is supplied with vibration by the vibrating device so that the amplitude of the front portion is larger than that of the rear portion of the main body, and sequentially sends out the steel fibers being stored to the discharge port in a layered form having a constant thickness. Quantitative discharge is possible. As in the case of the primary hopper, the discharge speed in this case can be easily and accurately controlled by adjusting the vibration frequency and amplitude of the vibrating device and by adjusting the tilt angle of the main body in the longitudinal direction.

The steel fiber discharged from the secondary hopper is dropped into the lower measuring hopper by gravity or by a chute, and the steel fiber corresponding to one batch of the concrete mixer is measured and stored. Batched into the middle mixer. By controlling the operations of the primary hopper, the conveying means, the secondary hopper, and the weighing hopper while correlating the operations, the continuous supply of the steel fiber by repeating each batch of the mixer can reduce the mechanical power without requiring any manpower. Immediately using
And 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 one embodiment of the present invention, and FIG. 2 is a schematic plan view of the same. Also,
FIGS. 3, 4, and 5 are a front view, a plan view, and a side view, respectively, showing the main structure of the above embodiment. The steel fiber supply equipment shown in each of these figures has a primary hopper 1, a conveying means 2 realized by a flex conveyor, and a secondary hopper having almost the same structure as that of the primary hopper 1 except that it has a small capacity. It includes a hopper 3 and a weighing hopper 4.
This steel fiber supply equipment is provided in addition to a batcher plant commonly called a ready-mixed plant, and is distributed, for example, between a yard 8 having a stock yard 7 and the like and a mixer 5 provided at the top of the batcher plant. Is established. In the stock place 7, a large amount of steel fibers packed in a flexible container bag are transported by a crane 6 and stored in an appropriate amount. The equipment automatically supplies the mixer 5.

The primary hopper 1 is provided in the yard 8 adjacent to the stock yard 7. The conveying means 2 realized by the flex conveyor is composed of a lower part of the primary hopper 1 and a mixer 5.
And the upper part thereof is extended in an ascending arrangement. The secondary hopper 3 is installed below the upper end which is the unloading end of the flex conveyor 2, and the weighing hopper 4 is installed below the secondary hopper 3 and directly above the mixer 5. By providing the primary hopper 1, the flex conveyor 2, the secondary hopper 3, and the weighing hopper 4 in this order from the upstream side of the physical distribution, a series of supply equipment for transporting and supplying the steel fiber is formed. In FIG. 2, reference numeral 9 denotes a conveyor provided alongside the flex conveyor 2, which is provided as a conveying unit for supplying cement, aggregate, gravel, and the like to the mixer 5.

FIGS. 6, 7 and 8 show the main structure of the primary hopper 1 in a front view, a plan view and a side view, respectively. Referring to these figures, 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 (the right end surface in FIG. 6). A main body 10 formed in a container, and a vibrating device 11 realized by a pair of vibration motors 11A and 11B integrally fixedly attached to an intermediate portion of the main body 10, for example, at lower portions of left and right side surfaces. Made up of The main body 10 is formed into a rectangular parallelepiped rigid container surrounded by a bottom plate, a rear plate, and both right and left side plates by using a steel plate, a strip steel, or the like as an aggregate and sticking a steel plate over the aggregate. The bottom plate forms a smooth plane on which a considerable amount of steel fiber is mounted.

The main body 10 is supported at four support points on the gantry 12 in front, rear, left and right, for example, with a spring member 13 composed of a compression coil spring interposed therebetween so as to be finely vibrated. Attach about 3 degrees,
It is attached to the gantry 12 while keeping the horizontal in the left-right direction. In this case, as the four support points on the front, rear, left and right, positions where 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 are selected.
The main body 10 is also formed such that the upper front corners of the left and right side face plates are cut off in the shape of a triangle with a downward front, so that the rising dimension of the left and right side walls at the front outlet is reduced. As a result, the front portion is formed to have a lighter structure than the rear portion, thereby reducing the rigidity of the front portion. on the other hand,
The pair of vibration motors 11A and 11B are mounted at a position closer to the rear support point than the front support point at the lower left and right side surfaces of the middle part of the main body 10 with the rotation axis inclined downward and forward in the front-rear direction.

When the vibration motors 11A and 11B are driven to apply vibration to the main body 10, the primary hopper 1 having such a structure reduces the rigidity of the front part and reduces 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, so that the amplitude of the vibration applied to the main body 10 is larger at the front than at the rear, and is further supported forward and downward in the front-rear direction. In combination with the arrangement, the steel fibers stored in the main body 10 can be sent out stably and smoothly sequentially toward the outlet. The vibration frequency can be adjusted by controlling the number of rotations of the vibration motors 11A and 11B, and the amplitude can be adjusted by adjusting the amount of eccentricity of the counterweight of the vibration motor. By adjusting the amplitude and the inclination angle of the main body 10, the cutting ability to be discharged from the discharge port can be arbitrarily controlled. The primary hopper 1 can accommodate, for example, 4 t of steel fiber, and the cutting ability is 20 t /
H.

As shown in FIGS. 3 to 5, a transport means 2 realized by a flex conveyor comprises a primary hopper 1
A loading end provided horizontally extending in the left-right direction immediately below the discharge port of the discharge port, an intermediate transfer section provided continuously and obliquely ascending at the load end, and a continuous And a carry-out end provided horizontally and horizontally extending above a mixer 5 provided at the top of the batcher plant, and receiving the steel fiber discharged from the discharge port at the carry-in end. The sheet is conveyed at a set traveling speed to an unloading side end through an intermediate conveying section, and is inserted into a main body of a secondary hopper 3 described later.

FIGS. 9, 10 and 11 show the main structure of the secondary hopper 3 in a front view, a half plan view and a side view, respectively. Referring to these figures, the secondary hopper 3 has a primary structure of a primary structure except for a small capacity and a different shape and a steel fiber receiving means 14 is provided. Since it is the same as Hopper 1,
The description of the common structure is omitted, and different parts will be described below. The secondary hopper 3 is provided with the input port on the upper surface directly below the discharge side end of the conveying means 2 and the discharge port facing above the input port of the weighing hopper 4. The vibration device 11 provided in the hopper is formed of one vibration motor 11A, and is mounted on the center line of the middle part of the main body 10 in the front-rear direction. This secondary hopper 3 can accommodate, for example, 0.8 t of steel fiber, and has a cutting capacity of 7.2 for discharging from a discharge port.
After receiving the steel fiber falling from the unloading end of the conveying means 2 and storing the steel fiber in the range of 0.2 to 0.8 t, the steel fiber of 7.2 t / H is vibrated. 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, and detects an upper limit storage amount, for example, 0.8 t and a lower limit storage amount, for example, 0.2 t, and can transmit an electric signal. Is formed.

The steel fiber receiving means 14 is provided below the measuring hopper 4 in relation to the outlet of the secondary hopper 3.
Is provided at a position directly above. The steel fiber receiving means 14 is formed of an air cylinder 15 and a shovel 16. The air cylinder 15 is supported on a gantry so that the head-side end of the cylinder is rotatable. It is connected to the rod end, and the upper edge is swingably supported by the gantry. When the rod of the air cylinder 15 is extended, the excavator 16 advances directly below the discharge port of the secondary hopper 3 so that the receiving port faces upward and drops from the discharge port. When the rod moves forward to receive the incoming steel fiber and the rod is shortened, the shovel 16
Is retracted to the lower side of the discharge port, the receiving port is turned downward, and the receiving steel fiber is reactivated so as to be discharged to the input port of the weighing hopper 4 below.

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

In the embodiment described above, the automatic supply of the steel fiber is performed as follows. The steel fiber used in this case is
It is preferable that the both sides are deformed and 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 package of, for example, 1 ton by the flexible container bag 17, unloaded to the yard 8, and stocked in an appropriate amount. The stored flexible container bag 17 is transferred by the crane 6 above the primary hopper 1, and the steel fiber is dropped into the primary hopper 1 by unpacking, which corresponds to the daily usage of concrete mixed with steel fiber in the ready-mixed plant. For example, 4 t 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 given a vibration in which the amplitude of the front part is larger than that of the rear part, so that the steel fiber during storage has a constant thickness. Are continuously discharged from the discharge port in the form of a layer, and then conveyed to the top of the raw plant by the flex conveyor 2 and charged into the secondary hopper 3 provided on the top, for example, 0.8 kg of steel fiber is stored. You. When the vibration device 11 of the secondary hopper 3 is driven, the steel fiber being stored is discharged from the discharge port in the form of a layer having a certain thickness, and is put into the measuring hopper 4. In this weighing hopper 4, a mixer 5
Mixer 5 in which concrete is kneaded after steel fibers corresponding to one batch of are weighed and stored.
Is supplied and supplied collectively. The capacity of the mixer 5 is, for example, 1 m
Assuming that the volume of steel fiber mixed with concrete is 1% in step ³ , the weight of the steel fiber corresponding to one batch of the mixer 5 is 80 kg.

When 80 kg of the steel fiber is stored in the weighing hopper 4, an electric signal is transmitted and the vibration device 11 of the secondary hopper 3 is stopped, and at the same time, the steel fiber receiving means 14 is operated forward. Therefore, a small amount of steel fiber dropped from the secondary hopper 3 due to the overshoot is received by the shovel 16, and the weighing accuracy in the weighing hopper 4 is improved. 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.

When the secondary hopper 3 has a weighing function and the steel fiber storage amount reaches the lower limit storage amount of 0.2 t, an electric signal is issued and the primary hopper 1 and the flex conveyor 2 start driving. Thus, 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 issued, the primary hopper 1 and the flex conveyor 2 stop driving, and the steel hopper from the primary hopper 1 to the secondary hopper 3 Fiber supply is interrupted. By repeating the above, it is possible to mechanically supply the steel fiber to the mixer 5 in a quick and accurate amount without any manual operation.

[0025]

As described above, the present invention controls the operation of the primary hopper, the conveying means, the secondary hopper, and the weighing hopper while associating the operations with each other, thereby making it possible to continuously produce steel by repeating each batch of the mixer. Fiber supply can be performed quickly and accurately using mechanical force without the need for manual labor, stably improving the quality of concrete mixed with steel fiber and improving the efficiency of concrete construction work. Can be expected.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the embodiment shown in FIG. 1;

FIG. 3 is a front view showing a main part structure of the embodiment shown in FIG. 1;

FIG. 4 is a plan view showing a main structure of the embodiment shown in FIG. 1;

FIG. 5 is a side view showing a main part structure of the embodiment shown in FIG. 1;

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

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

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 a half portion of the secondary hopper 3 shown in FIG.

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Primary hopper, 2 ... Conveying means, 3 ... Secondary hopper, 4 ... Weighing hopper, 5 ... Mixer,
10 ... body, 11 ... vibration device, 12 ... mount,
13 ... spring member, 14 ... steel fiber receiving means,

Claims (6)

(57) [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 and supported by a gantry with a spring member interposed therebetween, and a vibrating device attached to the main body. By storing a predetermined amount of the steel fiber input from the input port in the main body, and applying vibration to the main body so that the amplitude of the front portion is larger than that of the rear portion, the steel fiber is stored. A primary hopper capable of sequentially sending fibers to the discharge port in a layer of a certain thickness and capable of quantitative discharge, and extending from below the discharge port of the primary hopper to above the top of the batcher plant at a position higher than the primary hopper. A conveying means for receiving the steel fiber discharged from the discharge port at the carry-in end, and conveying the steel fiber to the discharge side end at a set traveling speed; A main body which is formed in a container having a small opening in comparison with the main body of the primary hopper, and which is supported by a gantry via a spring member; and a vibration device attached to the main body. A discharge port is provided below a discharge side end of the conveying means, and a discharge port is provided above a mixer provided at the top of the batcher plant. A predetermined amount of the steel fibers are stored in the main body, 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. A secondary hopper that can be sent out and discharged at a constant rate, and a steel hopper that is provided below the outlet of the secondary hopper and directly above the mixer and 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. The steel fiber for a batcher plant according to claim 1, wherein the main body of each of the primary hopper and the secondary hopper has a light weight structure in which a front portion is formed as compared with a rear portion, thereby reducing rigidity of the front portion. Supply equipment. 3. The main body of each of the primary hopper and the secondary hopper is provided with a spring member at four support points in 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. 3. The vibration device according to claim 2, wherein each of the vibrating devices comprises a vibration motor capable of controlling the number of rotations, and is attached to an intermediate portion of the main body closer to the rear support point than the front support point. Steel fiber supply equipment for batcher plants. 4. The steel fiber supply facility for a batcher plant according to claim 1, further comprising a steel fiber receiving means associated with an outlet of the secondary hopper. The steel fiber receiving means, in response to the weighing hopper weighing a predetermined amount, swings the steel fiber receiving portion below the discharge port to receive a steel fiber that falls due to an aftershoot. In response to the completion of the discharge of the steel fiber by the weighing hopper, the return operation is performed in which the steel fiber in the steel fiber receiving portion is discharged to the weighing hopper by swinging downwardly of the discharge port. Steel fiber supply equipment for batcher plants. 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. Equipment for supplying steel fiber for batcher plant. 6. The secondary hopper has a weighing function for measuring an upper limit storage amount and a lower limit storage amount, and a conveying unit and a vibration device of the primary hopper are 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, wherein the equipment is stopped in response to the measurement of the upper limit storage amount.