JPH056086Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a material charging device for charging material into a material charging hopper of a concrete mixer vehicle in a batcher plant.

[Prior art] In a batcher plant, when charging weighed materials into the charging hopper of a concrete mixer vehicle, a predetermined amount of water is first added, then gravel,
Sometimes a method is adopted in which sand is added in that order, followed by cement, and then water is added again last.

[Problems that the invention aims to solve] However, in that case, when cement is introduced, cement dust is scattered all around the area around the input hopper, and the input hopper is clogged with cement, which deteriorates the input performance. There was a problem.

The present invention can prevent dust from scattering, and
It is an object of the present invention to provide a material charging device that can improve charging performance.

[Means for Solving the Problems] The present invention was provided to solve the above problems, and is designed to allow the material input hopper of the concrete mixer truck to be inserted from the horizontal direction by moving the concrete mixer truck. A material input device frame is assembled, and this frame is provided with a gravel/sand input chute for inputting gravel/sand into the material input hopper of the concrete mixer truck, and inside this chute, the concrete mixer truck's input chute is installed. A cement charging cylinder for charging cement is inserted concentrically into the material charging hopper, and this cement charging cylinder is
It is provided so that it can be raised and lowered freely so that the tip can be inserted deep into the material input hopper of the concrete mixer vehicle when charging cement, and the lower end of the gravel/sand input chute is equipped with a hopper for discharging from the cement input cylinder. A water injection nozzle is provided for injecting water so as to surround the cement to be mixed, and the water injection nozzle can be inserted into the material input hopper from a position higher than the upper edge of the material input hopper of the concrete mixer vehicle. It is characterized by being able to be raised and lowered freely.

[Operation] When using the device of the present invention to charge material into a concrete mixer truck, first raise the cement charging cylinder and the water jet nozzle, and position the water jet nozzle above the upper edge of the material charging hopper of the concrete mixer truck. I'll keep it. In this state, the concrete mixer truck is moved to position the material input hopper of the concrete mixer truck directly below the cement input tube and the gravel/sand input chute. Then, the cement charging tube and the water injection nozzle are lowered into the material charging hopper of the concrete mixer truck. First, a predetermined amount of water is introduced, and then gravel and sand are introduced through the chute. Next, cement is added from the cement injection tube. Note that the cement charging cylinder may be raised when gravel or sand is loaded, and may be lowered only when cement is loaded.

When adding cement, water is sprayed from a water spray nozzle. Then, the jetted water surrounds the cement discharged from the cement charging tube, thereby preventing dust from scattering. Furthermore, since the cement charging tube is inserted deeply into the hopper during charging, the amount of accumulation in the hopper is reduced and cement clogging is prevented.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 2 shows the overall configuration of the apparatus of the embodiment, with reference numeral 1 indicating a material charging device frame and 2 a concrete mixer truck. The frame 1 is designed so that the rear of the concrete mixer truck 2 can be penetrated from the horizontal direction.
At least one side of the lower part is open. Then, a concrete mixer truck 2 is placed directly under the center of the pedestal 1.
The material input hopper 3 can be positioned at the rear of the machine.

In the central lower part of this frame 1, gravel and
A gravel/sand charging chute 4 for charging sand is provided so as to be movable up and down. Gravel and sand are supplied from a belt conveyor 5 to this gravel/sand input chute 4. Further, the pedestal 1 is provided with a cement tank 6 at its top, and below it, a cement tank 6 is provided.
A cement measuring hopper 7 and a cement charging cylinder 8 are provided in this order.

As shown in FIG. 1, the cement measuring hopper 7 has a gate 9 at the bottom, and by moving the opening/closing rod 10 up and down, the weighed cement can be dropped into the cement charging cylinder 8 below. ing. Further, the cement charging cylinder 8 is connected to the lower end of the cement measuring hopper 7 via a bellows 11 so as to be able to move up and down. The cement charging tube 8 has an upper half 8A made of a rigid material and a lower half 8B made of flexible rubber. The lower part of this cement charging cylinder 8 is inserted concentrically into the gravel/sand charging chute 4 described above from above, and its lower end is connected to the discharge port 4D of the chute 4.
stands out from This cement charging cylinder 8 is raised and lowered by an elevating drive mechanism 12 composed of a cylinder or the like, and when lowered, the cement charging cylinder 8 is moved to the material charging hopper 3 of the concrete mixer vehicle 2
The tip is inserted deep inside the.

On the other hand, as shown in FIG. 1, the chute 4 for charging gravel/sand is formed in a size that allows its lower part to be inserted into the material charging hopper 3 of the concrete mixer truck 2, and its upper part is Material receiving port 4
A, the entire top surface is closed except for the central hole 4B and the inspection window 4C. Then, to the material receiving port 4A,
Materials sent by a belt conveyor 5 (see FIG. 2) are input.

Further, the lower part of the cement charging tube 8 is inserted into the central hole 4B of the chute 4 so as to be relatively movable in the vertical direction. A bellows 13 is provided to cover the gap between the insertion portions. As shown in FIG. 3, this chute 4 is capable of being raised and lowered by a lifting drive mechanism (cylinder device) 16, and is operated independently of the cement charging tube 8. The discharge port 4D at the lower end of the chute 4 is concentric with the cement input tube 8, and gravel and sand are discharged from the space provided between the inner peripheral edge of the discharge port 4D and the cement input tube 8 into the material input hopper 3. discharged inside.

Further, a water injection nozzle 14 is provided on the periphery of the lower end discharge port 4D of the chute 4 at a position where it does not interfere with the discharge of gravel and sand. This water injection nozzle 14 is a circular pipe along the circumference of the outlet 4D of the chute 4 with many small injection holes. A water curtain is formed to surround the cement discharged from the cement charging cylinder 8, and dust generated by the sprayed water can be flowed into the material charging hopper 3.

Furthermore, a water injection nozzle 1 is installed at the lower end of the chute 4.
A rubber cover 15 is attached so as to hang down so as to cover the entire circumference. This rubber cover 15 is for sealing the gap between the lower end of the chute 4 and the inner surface of the hopper 3 when the chute 4 is lowered into the material input hopper 3 of the concrete mixer vehicle 2. The length is set so that it contacts the inner surface of the hopper 3 as much as possible when lowered.

The chute 4 to which the water injection nozzle 14 and the rubber cover 15 are attached in this way is moved to the position shown by the solid line and the position shown by the chain double-dashed line in FIG. can be raised and lowered between In this case, shoot 4
The movement range of the chute 4 is set so that when the chute 4 is raised, the water injection nozzle 14, which is a rigid object at the lowest position, is located above the upper edge of the hopper 3. In this state, the hopper 3 of the concrete mixer truck 2 can be moved horizontally.

Next, an explanation will be given of the operation when material is introduced into the concrete mixer truck 2 using the above-mentioned configuration device.

First, the cement injection tube 8 and the water injection nozzle 14
With the chute 4 with the mark raised, move the concrete mixer truck 2 backwards and move the material input hopper 3 of the concrete mixer truck 2 to the cement input tube 8.
and located directly below the gravel/sand chute 4. At this time, the material input hopper 3 hits the lower part of the cement input cylinder 8 and the rubber cover 15, but since the lower half of the cement input cylinder 8 and the rubber cover 15 are both made of rubber, the material input hopper 3 hits the lower part of the cement input cylinder 8 and the rubber cover 15, so When the hopper 3 is freely bent and reaches the correct position, it returns to its initial shape inside the hopper 3.

Then, operate the elevating drive mechanisms 12 and 16 to lower the cement charging cylinder 8 and the chute 4, and insert the water injection nozzle 14 and the tip of the cement charging cylinder 8 into the material charging hopper 3 of the concrete mixer truck 2. do. First, a predetermined amount of water is poured in, and then gravel and sand are conveyed by a belt conveyor 5 and thrown into the hopper 3 from the chute 4.
Next, cement is introduced from the cement injection tube 8 and water is injected from the water injection nozzle 14. Then, the sprayed water forms a water curtain, which surrounds the cement discharged from the charging tube 8, and the sprayed water mist washes away the dust, preventing it from scattering to the outside. be done. In addition, since the cement charging cylinder 8 is inserted deep inside the hopper 3 during charging, the hopper 3
Almost no cement accumulates inside, and it flows down smoothly.

In this way, once the material has been loaded, the elevating drive mechanisms 12 and 16 are operated again to raise the cement charging tube 8 and the chute 4. Thereby, the concrete mixer truck 2 can be moved.

[Effects of the invention] As explained above, according to the invention, since the water jetted from the water jet nozzle surrounds the cement discharged from the cement charging cylinder, the generated dust is absorbed by the water. It will not be blocked or washed away and scattered outside. In addition, since the cement charging cylinder is inserted deep into the hopper of the concrete mixer vehicle, there is less accumulation in the hopper, which effectively prevents clogging in the hopper and improves charging performance. .

[Brief explanation of drawings]

FIG. 1 is a schematic side sectional view showing details of essential parts of an embodiment of the present invention, FIG. 2 is a side view showing the overall configuration of the embodiment, and FIG. 3 is a view taken in the direction of the arrows in FIG. 2. 2...Concrete mixer truck, 3...Material input hopper, 4...Gravel/sand input chute, 8...
Cement charging cylinder, 12...Cement charging cylinder elevating drive mechanism, 14...Water injection nozzle, 16...Chute elevating drive mechanism.

Claims (1)

[Scope of utility model registration request] A material input device frame is assembled so that the material input hopper of the concrete mixer vehicle can be inserted from the horizontal direction, and a gravel/sand device for introducing gravel/sand into the material input hopper of the concrete mixer vehicle is installed on this frame.
A sand charging chute is provided, and a cement charging cylinder for charging cement into the material charging hopper of the concrete mixer vehicle is inserted concentrically into the inside of this chute. It is installed so that it can be raised and lowered freely so that it can be inserted deep into the material input hopper of a concrete mixer truck, and the lower end of the gravel/sand input chute has a hopper surrounding the cement discharged from the cement input tube. A water injection nozzle is provided for injecting water in such a manner that the water injection nozzle is movable up and down so that it can be inserted into the hopper from a position higher than the upper edge of the material input hopper of the concrete mixer vehicle. A device for feeding materials into a concrete mixer truck in a batcher plant, which is characterized by: