JP3037145U - Cement supply equipment - Google Patents

Abstract

(57) [Abstract] [Problem] To solve the problem that the conventional cement supply imposes a heavy burden on an operator and a poor work efficiency during kneading. It also contributes to resource saving by reducing the amount of empty bags that are industrial waste. Further, even a person who does not require skill can easily mix desired mortar and concrete, and variation in quality at that time is reduced. A storage box body (1) having an open upper surface and formed in a downwardly tapered shape is attached to a frame (3). A cylindrical screw conveyor 2 having a discharge port 2a at one end is provided at the lower end of the storage box 1 so as to laterally pass through the inside of the storage box 1. Further, a sharp-shaped bag-breaking portion 9 is provided inside the storage box body 1, so that cement can be directly put into the storage box body 1 from a large bag called a flexible container pack. The cement can be taken out by the screw conveyor 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cement supply device that is installed in a site such as civil engineering and construction, and supplies a required amount of cement to a mixer when kneading mortar and concrete.

[0002]

[Prior art]

 As is well known, mortar is manufactured by kneading cement, sand, an admixture, and water, and concrete is kneaded by adding coarse aggregate to this.

At work sites such as civil engineering and construction, a mixer for this kneading is installed so that the mortar and concrete used for the work can be kneaded on the spot. For this work, the cement that is the material has to be put into the mixer.In the past, however, the worker lifted the cement bag to the input port of the mixer and broke the bag with this work. It was done by dropping the contents into the mixer.

However, in the conventional cement bag, since the weight of one bag is 40 kg, this work is difficult to perform, and it is a heavy burden on the operator. Therefore, in recent years, it has been proposed and realized that the cement bag should be reduced in weight to 25 kg to improve its handling property.

[0005]

[Problems to be solved by the device]

 In the above-described conventional manual addition of cement to the mixer, the worker has to lift each heavy cement bag to the inlet of the mixer one by one, which is a heavy labor, and even if the cement bag is lightened, that much is required. However, there was a problem that the number of work processes increased and the burden on the operator was heavy anyway. In addition, this method has a problem that the worker has to carry the cement bag one by one and the work efficiency is poor.

In addition, the cement bag is made strong to store heavy cement, but after the content cement is put into the mixer, it becomes industrial waste and wastes resources. There is a point, and this point is more remarkable when the cement bag is made into a small bag to reduce the weight.

Furthermore, in the above method, the amount of cement used for kneading is often determined by the experience and skill of the craftsman, which requires a skilled craftsman and also the mortar with the properties suitable for the application. It was difficult to provide concrete and concrete, and there was the problem that the quality of each kneading process varied.

The present invention aims to solve these problems of handling cement during conventional kneading.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention comprises a cement supply device capable of removably storing the cement carried in a large bag called a flexible container pack. An open downward taper, a cement storage box with a sharp rupturing section at the open part, and a lower end of the storage box that communicates with this storage box and a discharge port on one side of the lower end. And a drive device for rotating the screw installed in the screw conveyor.

Further, the invention according to claim 2 is characterized in that a control unit for time-controlling the drive unit is provided, and the amount of cement discharged is determined by the operating time of the drive unit.

[0011]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a perspective view of a cement supply device of the present invention. 2, 3, and 4 are a front view, a side view, and a plan view, respectively. As shown in the figure, in the cement supply device of the present invention, a substantially box-shaped storage box 1 having an open upper surface is held by four frames 3 arranged at its four corners, and a cylindrical screw is provided below the frame. The conveyor 2 is provided.

In the storage box body 1, side plates 1a, 1b, 1c, 1d on the four sides of the lower half are inwardly inclined so that the side plates 1a, 1b, 1c, 1d are in a downwardly tapered shape, and a screw 12 is provided at a lower end thereof. The cylinder body 11 of the internally installed screw conveyor 2 is provided in the lateral direction so as to communicate with the inside of the storage box body 1. The screw 12 is provided with spiral blades 12b having a length substantially equal to that of the cylinder 11 and an outer diameter substantially equal to the inner diameter of the cylinder 11, and the screw 12 has a shaft portion 12a protruding from one side of the cylinder 11, The sprocket 5 is attached.

An electric motor 4, which is a drive device, is provided below the frame 3, and a chain 7 is suspended between the sprocket 6 and the sprocket 5 of the electric motor 4.

The other side of the tubular body 11 is provided with a discharge outlet 2 a that projects outward from the frame 3 and that opens downward.

A lattice-shaped protective member 10 is provided inside the storage box body 1 so as to cover the screw 12 whose upper side is open. On the upper side of the protective member 10, a metal plate is formed in a quadrangular pyramid shape. A ruptured bag portion 9 having a sharp tip formed by welding is provided so that the tip thereof is located at an open portion of the upper surface of the storage box 1.

Reference numeral 8 in the drawing denotes a control unit, which is a timer for setting a power supply time to the electric motor 4, and a safety device for detecting an overload of the electric motor 4 from the supplied voltage and stopping the supply of electric power. And so on.

The cement supply device of the present invention has the above configuration.

Next, the method of use will be described. First, the cement supply device is transported to and installed at a construction and civil engineering work site. Then, the cement is put into the storage box body 1. At this time, in the cement supply device of the present invention, a large-capacity cement bag called a flexible container pack such as 1 ton packing is used. This work is performed by hoisting the flexible container pack P, which has been brought into the field by a truck or the like, by using a lifting device such as a unic, hoist, or wrecker, and lowering it in the center of the storage box body 1. The bottom surface of the pack P is torn by the bag breaking portion 9, and the stored cement falls into the storage box 1. At this time, even if the flexible container pack P breaks or the flexible container pack P itself falls into the storage box body 1, it is stopped by the protective member 10 and does not get caught in the screw conveyor 2.

When the cement is stored in the inside in this way and the electric motor 4 is operated when necessary, the cement stored in the storage box 1 is rotated by the screw 12, whereby the spiral blade is rotated. At 12b, it is sequentially sent to the tip side (left side in FIG. 2) of the cylinder 11, falls from the discharge port 2a, and is taken out to the outside. Therefore, if a mixer (not shown) or the like is arranged below the discharge port 2a, the cement necessary for kneading mortar and concrete is automatically supplied to this mixer. The operation of the electric motor 4 at this time may be performed while confirming the amount of cement discharged by a hand switch or the like, but the amount of discharged cement is measured in advance with respect to the operating time, and the timer (not shown) of the control unit 8 is used. If it is operated for a time commensurate with the required amount of cement, it is desirable because it will not require time and the amount of discharge will be accurate. In this case as well, it is possible to additionally discharge cement with a hand switch or the like and fine-tune it if necessary.

In this way, the cement supply device of the present invention is installed and used at a work site. It should be noted that in case of rain or the like, the upper part may be covered with a waterproof sheet or the like, and even in this case, there is no problem in the operation of the cement supply device of the present invention.

[0022]

【Example】

 Further, as a result of an experiment under the following conditions, its effect was confirmed.

Dimension of opening of storage box: 1,100 mm × 1,100 mm Height of storage box: 1,350 mm Shaft shaft diameter: 50 mm Screw outer diameter: 140 mm Pitch of screw spiral blade: 100 mm Cylindrical body Inner diameter: 150 mm Electric motor used: 200 V, 0.75 kW The cement contained in the 1 ton flexible container pack could be directly added to the cement supply device. Further, when the screw was driven at 60 rpm after the cement was added, it took 10 to 12 minutes to completely discharge 1 ton of the cement. Therefore, since the discharge capacity per hour can be calculated from now on, it becomes possible to set the operation time of the electric motor corresponding to the required cement amount by the timer provided in the control unit.

[0024]

[Effect of the invention]

 As described above, the invention according to claim 1 of the present invention stores a large amount of cement at a time with a cement supply device in which a screw conveyor is provided in a storage box body provided with a bag breaking portion, and is required. Since it is possible to take out only the amount, it is possible to handle the cement at once in a large bag called a flexible container pack, and the amount of used bags that become industrial waste compared to the case where conventional cement bags are used. As well as reducing waste, wasteful resource consumption is suppressed, and the cost of cement is also reduced. In addition, since workers do not have to carry cement bags one by one when kneading mortar and concrete, the labor and time required to supply cement are reduced, the burden on workers is reduced, and work efficiency is improved. .

Further, according to the second aspect of the present invention, the amount of cement discharged is determined by the operating time of the driving device. Therefore, by operating the driving device for a necessary time, the amount required for kneading The cement of can be taken out accurately. Therefore, in addition to the effect of the invention described in claim 1, it becomes possible to provide mortar and concrete having properties suitable for the intended use, and variation in quality that occurs each time kneading is reduced. Furthermore, there is an effect that this work can be performed even if not a skilled plasterer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cement supply device according to the present invention.

2 is a front view of the cement supply device shown in FIG. 1. FIG.

3 is a side view of the cement supply device shown in FIG. 1. FIG.

FIG. 4 is a plan view of the cement supply device shown in FIG. 1.

[Explanation of symbols]

 1 Storage Box 1a, 1b, 1c, 1d Side Plate 2 Screw Conveyor 2a Discharge Port 3 Frame 4 Electric Motor 5, 6 Sprocket 7 Chain 8 Control Part 9 Bag Breaker 10 Protective Member 11 Cylindrical 12 Screw 12a Shaft 12b Spiral Blade

Claims (2)

[Utility model registration claims] 1. A storage box body for cement, which is formed in a downward tapering shape with an open upper surface and has a sharp bag breaking portion at the open portion, and a storage box body at the lower end of the storage box body. It consists of a screw conveyor that is provided so as to communicate with each other and has a discharge port on one side of the lower end, and a drive device that rotates the screw installed inside the screw conveyor, and is carried in a large-capacity bag called a flexible container pack. A cement supply device, characterized in that the stored cement can be stored in a removable manner. 2. The cement supply apparatus according to claim 1, further comprising a control unit for time-controlling the drive unit, wherein the amount of cement discharged is determined by the operating time of the drive unit. .