JP3083689B2 - Material input device and weighing method using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material feeding apparatus for supplying a material to various containers such as a mixer such as a concrete mixer and a stirrer, and a measuring method using the same.

[0002]

2. Description of the Related Art For example, in the case of a simple mortar plant, as shown in FIG. 7, when the material is charged into a mixer 54, the aggregate once stored in a hopper 50 is removed from a belt conveyor 51. Is transferred from the upper end of the hopper scale 52, and is weighed by the hopper scale 52.
3 is supplied to the mixer 54. On the other hand, as for the cement, a fixed amount of cement in bags is directly charged into the mixer 54 in a bag unit, kneaded by the mixer 54, and then supplied to the spraying machine 56 or the like by the belt conveyor 55. In this case, the weight of the cement is not measured at the time of material input because the cement in the bag is used.

[0003]

In the case of the above simple mortar plant, sufficient equipment is not provided.
The operation of putting the cement into the mixer 54 is performed directly by an operator by human power. However, the operation of lifting a 40 kg-equivalent cement bag near the upper input port of the mixer 54 and inputting the same requires a considerable amount of labor and is a heavy labor. For example, instead of this, cement can be transferred from a low place to an upper charging port by a belt conveyor, but when the cement is transferred by a belt conveyor or the like, there is a problem that dust is generated and the working environment is deteriorated.

[0004] Further, when such a simple mortar plant is installed in a narrow place such as in a tunnel, a sufficient occupation space for installation of a transfer line and a scaffold may not be obtained. On the other hand, when it is necessary to record and print the compounding amount of each input material for each batch for management, even when using bagged cement, weighing at the time of input is necessary.

SUMMARY OF THE INVENTION Accordingly, a main object of the present invention is to provide a material charging apparatus and a measuring method thereof capable of reducing the work of charging the material into a container such as a mixer, reducing the occupied space, and measuring the charged material. Is what you do.

[0006]

The object of the present invention is to provide an arc-shaped, rectangular-shaped or L-shaped temporary receiver for temporarily receiving an input material, and to rotate around one end of the temporary receiver. A gantry that supports the temporary receiver, and a rotation driving unit for rotating the temporary receiver, and by the standing operation of the temporary receiver,
This problem can be solved by providing a load detecting means for the rotation driving means in a material charging apparatus for charging the material in the temporary receiver into a target container from a discharge port provided on the shaft side.

[0007] A temporary receiver having a circular cross section, a square shape or an L shape for temporarily receiving cement is temporarily mounted on the side of the mixer by a rotary driving means provided with load detecting means. The container may be rotatably mounted around one end of the container, and may be provided with a material input device for inputting cement in the temporary receiver into the mixer through an outlet provided on the shaft side by the erecting operation of the temporary receiver. it can.

[0008] In actual metering, the temporary receiving material was poured into units, the temporarily stops rotating the temporary receiver by a driving means in a state lifted up to a predetermined position, said pivot under the stopped state Measure the load of the driving means,
To calculate the weight of the input material on the basis of the measured load.

[0009]

According to the present invention, since a temporary receiver having a circular arc shape, a rectangular shape, or an L-shape which is rotatable about one end as a center of rotation and has a transverse cross section is used, the temporary receiver is substantially operated. order to be able to be lowered to the vicinity of the floor, the operator can achieve a reduction in work now without lifting the cement bag, Ru can be introduced cement. Further, a work platform such as a scaffold for material input is not required, and the occupied space can be reduced.

Further, since the load of the rotary drive means is proportional to the weight of the temporary receiver, a load detecting means is provided for the rotary drive means, and the load is measured to determine the weight of the input material. Can be calculated.

[0011] Further, in the case of a plant which is provided for the execution of concrete, mortar casting, concrete spraying, etc., an aggregate weighing device is separately provided, and a transfer conveyor and the like are also provided at the same time. Therefore, an occupied space is required for this purpose. However, by providing the material input device with the weighing means, a space for the weighing device is not required, and the occupied area can be significantly reduced. it can.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a side view of a mixer provided with the material charging device according to the present invention, and FIG. 2 is a front view thereof. The mixer according to the present invention mainly comprises a mixer 2 as a main body, a hopper device 1 mounted and fixed on the mixer 2, and a cement feeding device 3 mounted on a side of the mixer 2.

The hopper device 1 includes a cubic frame 1
A screen 10 is mounted on the upper opening of the hopper tank 11 and fine aggregate such as sand passing through the screen 10 is stored in the hopper tank 11.

At the lower end opening of the hopper tank 11, double-opening open / close gates 14 and 15 are attached, which can be opened and closed freely by operating a link mechanism by operating a cylinder 13. An instrument box 16 has a built-in device for measuring fine aggregate such as sand stored in the hopper tank 11.

On the other hand, the mixer 2 includes a gear motor 20.
Of rotation of the anchored sprocket 20a to the drive shaft is transmitted to the stirring blades shaft 22 via a chain 21 and sprocket 22a, the stirring blade 25 housed in the mixer container 26 is rotated. Reference numeral 28 denotes a tensioner for the chain 21. A slide gate 24 is attached to the bottom of the mixer container 26, and can be opened and closed by operating the cylinder 23 such as hydraulic or pneumatic. The concrete dropped from the slide gate 24 is transported by a belt conveyor 60 to a predetermined place where a concrete spraying machine or the like is located.

A cement feeding device 3 according to the present invention is attached to the mixer 2. Cement input device 3
Is a temporary receiver 30 having a substantially L-shaped cross section and rotatably supported by the mixer 2 as a support,
It is composed of a hydraulic or pneumatic cylinder 31 for controlling the rotation of zero. One end of the temporary receiver 30 is fixed to a rotating shaft 33 provided at an upper end portion of the mixer 2, and the temporary receiving device 30 rotates about the rotating shaft 33. . Further, said one end of the rotating shaft 33 and coupling member 32 is fixed, by the expansion and contraction control of the cylinder 31 which is pivotally supported to the other end of the connecting member 3 2, the temporary receiver 30 is rotated Control Have been.

An outlet 30 is provided on the shaft side of the temporary receiver 30.
a is formed and the cement in the container is discharged so as to slide down due to gravity and is put into the mixer container 26 as the temporary receiver 30 is brought upright as shown by the broken line. Further, on the side surface of the hopper device 1, a projection 12 is provided for closing the cement input port of the temporary receiver 30 when the temporary receiver 30 stands up. Synthetic rubber is stuck.

The rotation drive cylinder 31 is provided with piston position detection sensors 14a, 14b and 14c such as limit switches and proximity switches on the cylinder body. The start and end positions of the operation are detected by the position detection sensors 14a and 14c, ON / OFF control of hydraulic oil and the like is performed, and a position detection sensor 14 disposed substantially at the center of the cylinder body is provided.
The stop position at the time of weighing the material put into the temporary receiver 30 is detected by b.

At the base end of the cylinder 31, a pressure sensor 15 for measuring the pressure of working air and working oil sent into the cylinder is provided. As the pressure sensor 15, various types such as a strain gauge type pressure gauge, a Bourdon tube pressure gauge, a diaphragm type pressure gauge, and a bellows type pressure gauge can be used.

In the actual measurement, first, the temporary receiver 3
After the material is charged in a state where the temperature is lowered to 0, the cylinder 31 is operated to move the temporary receiver 30 to the position detection sensor 14b.
Is rotated to a predetermined position where the detection is performed, and the temporary receiver 30 is stopped in this raised state. In this state, the pressure sensor 15 measures air pressure, oil pressure, and the like in the cylinder 31. After the measurement of the pressure is completed, the temporary receiver 30 is further rotated to put the material in the hopper tank 1.
Put in 1. The weight of the input material in the temporary receiver 30 is calculated by the following procedure.

As shown in FIG. 3, when the temporary receiver 30 is stopped, the rotational moments in the forward and reverse directions about the rotating shaft 33 are balanced, so that W _P cos θ · l ₁ =
W · l ₂ and the input material weight W = W _P cos θ · l ₁ /
l ₂ . Here, l ₁ and l ₂ are obtained by actual measurement or calculation because the stop position is always fixed by the position detection sensor 14b. Since the W _P is the pressing force of the cylinder, W _P = ΔP · A (ΔP; The pressure is obtained by subtracting the internal pressure of the cylinder before the material is charged from the internal pressure of the cylinder when the temporary receiver is lifted, A: the internal area of the cylinder.

[0022] In plant using a mixer having a material-feeding device according to the present invention described above, as shown in FIG. 6, the hopper 50 and, <br/> aggregate which is stored in the hopper mixer 2 a belt conveyor 51 for introducing into the hopper apparatus 1 placed on the top, because it is constituted by a belt conveyor 55 for feeding mortar discharged from mixer 2 in blast machine 56, etc., in FIG. 7 The occupied space is reduced as compared with the example of the plant shown. In the example of the concrete plant, two hoppers 50, 50 for fine aggregate and coarse aggregate can be arranged in parallel.

Although the configuration in which the mixer 2 is provided with the cement charging device 3 has been described in detail, the cement charging device 3 may be configured as a single device. For example, the material charging apparatus shown in FIG. 4 uses a gantry 40 on which two support columns 40a are erected, and the support columns 40a
And bearing the pivot shaft 33 at the tip portion of the pivot shaft 33 has been connecting member 3 2 fixed, by controlling rotation by the cylinder 41 of the hydraulic or air pressure or the like, secured to the pivot shaft 33 The temporary receiver 30 thus made is rotatable. As in the case of the first embodiment, the cylinder 41 is provided with the piston position detection sensors 14a, 14b, 14c and the pressure sensor 15 as well.

In the material charging apparatus shown in FIG. 5, a support column 42a erected on a gantry 42 is used as a rack gear, and a bearing block 43 is provided along the support column 42a so as to be able to move up and down. The rotating shaft 33 and the temporary receiver 30 fixed to the rotating shaft 33 are supported through the rotating shaft 33. In addition,
The raising and lowering control of the bearing block 43 is performed by hydraulic pressure or a servomotor 45, and the rotation control of the rotating shaft 33 that is carried by the bearing block 43 is performed by hydraulic pressure or a servomotor 44. When the motor serves as the rotation driving means, a torque meter (not shown) is provided for the hydraulic pressure or the servo motor 44, and the torque when the lifting of the temporary receiver 30 is stopped is detected. The weight put into the receiver 30 can be determined.

[0025]

As described above in detail, according to the present invention, the operation of charging the material into the container can be reduced, and the amount of the charged material can be measured simultaneously with the charging of the material.
Further, the occupied space can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a mixer provided with a material charging device according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a diagram showing a balance state of a temporary receptor.

FIG. 4 is a side view of the material input device.

FIG. 5 is a perspective view of another example of the material input device.

FIG. 6 is a layout diagram of a mixer plant according to the present invention.

FIG. 7 is a layout diagram of a simple mortar plant.

[Explanation of symbols]

1 ... hopper apparatus, 2 ... mixer, 3 ... material feeding device,
10 ... Screen, 11 ... Hopper tank, 14a-1
4c: piston position detection sensor, 15: pressure sensor, 13.23.31: cylinder, 30: temporary receptor

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenji Yajima 4-35, Kudankita, Chiyoda-ku, Tokyo Light Industry Co., Ltd. (56) References JP-A-6-8229 (JP, A) JP-A-Hei 6-8228 (JP, A) JP-A-4-176607 (JP, A) JP-A-61-110507 (JP, A) JP-A-54-126220 (JP, A) JP-A-3-97505 (JP, A) A) Japanese Utility Model Showa 61-31817 (JP, U) Japanese Utility Model Showa 59-167148 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B28C 7/06 B01F 15/02 B01J 4 / 00 105 B28B 13/02

Claims (3)

(57) [Claims] An arc-shaped, rectangular-shaped, or L-shaped temporary receiver for temporarily receiving an input material; a mount rotatably supporting one end of the temporary receiver as a center; A rotating drive means for rotating the temporary receiver, and by erecting the temporary receiver, the material in the temporary receiver is charged into a target container from a discharge port provided on the shaft side. A material input device according to claim 1, wherein a load detecting means is provided for said rotation driving means. 2. An arc-shaped, rectangular or L-shaped temporary receiver for temporarily receiving cement is provided on the side of the mixer.
The temporary receiver is rotatably mounted around one end of the temporary receiver by a rotation driving means provided with a load detecting means, and the temporary receiver is set up so that the cement in the temporary receiver is disposed on the shaft side. A concrete mixer comprising a material charging device for charging a material into the mixer from an outlet. 3. After the material is put into the temporary receiver, the temporary drive is temporarily stopped in a state where the temporary receiver is lifted to a predetermined position by the rotation driving means. 3. The method according to claim 1, wherein the weight of the input material is calculated based on the measured load.