JP2001171419A - Concrete transportation vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete transportation vehicle capable of unloading concrete directly to a high position from a load-carrying platform, without jacking up the load-carrying platform and requiring a conventional step-ladder. SOLUTION: This vehicle is equipped with a vehicle 40 equipped with the load-carrying platform, and a concrete storing and discharging device 20 loaded detachably on the load-carrying platform 40a of the vehicle. The concrete storing and discharging device is equipped with a concrete storing part 21 for storing the concrete inside, equipped with an opening capable of being opened and closed for discharging the concrete at the lower end, and a belt conveyor 24 for conveying the concrete discharged from the opening of the concrete storing part up to a higher position than the opening behind the load-carrying platform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete transport vehicle for transporting concrete and lowering it at a predetermined position.

[0002]

2. Description of the Related Art Conventionally, a concrete mixer truck has been used as a means for transporting concrete. However, concrete that can be transported by the concrete mixer truck is limited to concrete having a maximum aggregate size of about 40 mm. Therefore, dump trucks are used to transport concrete containing large aggregates. Generally, in a dump truck with a loading load of about 10 tons, the unloading height is 75 cm even if the loading platform is jacked up.
The degree is the upper limit, and in order to transfer concrete directly from the loading platform to the concrete bucket, place a step on which the dump truck is placed on the ground, or
It requires a dump truck with an elevated platform.

[0003]

However, depending on the construction site and the progress of the process, the place where the concrete is unloaded changes and is not constant, and the place where the concrete is unloaded is adjusted at the place away from the platform. No, it is not effective in terms of work efficiency.

[0004] Further, in a dump truck in which the position of the loading platform has been modified to a high position, the center of gravity is high and the stability is lacking. Therefore, there is a danger that the dump truck may fall over when the loading platform is jacked up. In consideration of stability, dump trucks could load only about 2 m ³ of concrete, resulting in low work efficiency. Furthermore, dump trucks are inconvenient because they cannot be driven by a chute like a concrete mixer truck.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a concrete transport vehicle capable of unloading concrete directly from a platform to a high position without jacking up the platform and without requiring a conventional step platform. Is to do.

[0006]

According to the present invention, there is provided a vehicle provided with a loading platform, and a concrete storage / discharge device removably mounted on the loading platform of the vehicle. A concrete storage unit having a lower end capable of opening and closing concrete for discharging concrete and discharging the concrete at a lower end, and transporting the concrete discharged from the opening of the concrete storage unit to a position higher than the opening behind the loading platform. And a conveyor belt.

[0007] In the present invention, it is preferable that a vibration means is provided in the concrete accommodating section. The vibrating means may be a vibration generator attached to the plate to vibrate a plate itself such as a steel plate constituting the storage unit, or may be disposed so as to contact concrete inside the concrete storage unit. It is also possible to use a vibrator which vibrates itself, or use both.

[0008] In the present invention, it is preferable that the concrete accommodating portion is disposed in front of a bed of a vehicle. Thus, the center of gravity of the concrete can be positioned substantially at the center of the vehicle, and the safety of the concrete transport vehicle is improved.

In the present invention, the belt conveyor is provided with a roller having a concavely curved cross-sectional arrangement, and extends a long elastic plate body in the conveying direction so as to hang from both sides onto a belt running on the roller. The roller and a long elastic plate can provide a trough angle. Thereby, it is possible to reduce concrete spillage from the belt conveyor during transportation.

Further, in the present invention, it is preferable that power is supplied to the driving device such as the motor of the belt conveyor from the outside of the concrete transporting vehicle, thereby reducing the weight of the bed and increasing the weight of concrete loaded. Can be done.

[0011]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of a concrete transport vehicle 10 according to the present invention. The concrete transport vehicle 10 includes a truck 40 having a loading platform 40a.
And a concrete storage / discharge device 20 which is removably mounted on the loading platform 40a of the truck 40. Here, as the truck 40, a dump truck generally used at a construction site can be used.

FIG. 2 shows the concrete storage and discharge device 2.
0 is a side view, FIG. 3 is a plan view thereof, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 2 to 4
In the concrete storage and discharge device 20, the lower end is provided with a discharge port 21a that can be opened and closed by a hopper 21 for storing concrete therein, and the concrete discharged from the discharge port 21a is discharged from the discharge port 21a behind the loading platform 40a. Is provided with a belt conveyor 24 which can convey it to a higher position.

The belt conveyor 24 will be described in more detail. A bottom plate 32b and a pair of beam members 32a,
32a is supported by the pedestal 33a and the column 33b in an inclined arrangement so that the end located on the rear side, that is, on the side opposite to the hopper 21, is raised. , 38 are extended. A drive roller 26 and a driven roller 27 are pivotally mounted on both ends of the roller supports 38, 38, and a plurality of rollers 31 are curved between the rollers 26, 27 in a concave shape as shown in FIG. The belt 29 is suspended between the driving roller 26 and the driven roller 27. At the rear ends of the beams 32a, 32a, a gantry 30 is erected, and a motor 25 is installed on the gantry 30, and a chain 28 is hung on each sprocket of the motor 25 and the driving roller 26. You. further,
A pair of skirt supports 35, 35 are erected on the beam member 32a, and a skirt 37 made of a thick rubber plate is attached to the skirt supports 35, 35 as shown in FIG. It is arranged so that it hangs down from both sides.

As described above, a relatively large trough angle can be provided by the plurality of rollers 31 having a concavely curved cross-sectional arrangement and the skirt 37.
9 can prevent the concrete conveyed from being spilled.

The hopper 21 is formed in an inverted quadrangular pyramid shape by a steel plate, and a vibrator (not shown) is arranged inside the hopper 21 so as to be in contact with concrete. And a frame in front of the belt conveyor 24,
That is, it is connected to the lower end of the belt conveyor 24.

The power supply for the motor 25 and the vibrator is not loaded on the concrete transporting vehicle 10, but is used separately from the construction site.

Next, the operation of the concrete transport vehicle 10 will be described. In the batcher plant, the concrete transport vehicle 10 loads concrete in the hopper 21 and travels to a predetermined position. On the other hand, the concrete bucket 41 is transported by a crawler crane or a crane (not shown), and the rear end 24 of the belt conveyor 24 is conveyed.
Lower below a. Then, the vibrator is operated to increase the fluidity of the concrete, the discharge port 21a of the hopper 21 is opened, and the motor 25 of the belt conveyor 24 is operated. Thereby, the concrete 43 is put on the belt 29.
Is conveyed toward the rear end 24a and is unloaded into the concrete bucket 41 from the rear end 24a.

[0018]

According to the concrete transporting vehicle of the present invention, a concrete container for discharging the concrete contained therein from the lower end opening, and a belt for conveying the concrete discharged from the concrete storing portion higher than the lower end opening to the rear of the loading platform. Since the concrete storage and discharge device with a conveyor is detachably loaded on the bed of the vehicle, there is no need to modify and raise the bed like a conventional dump truck, and there is no need for a step, Even if you do not jack up the carrier like a conventional dump truck,
It has become possible to unload concrete directly above the loading platform. Therefore, the stability at the time of transportation and unloading is significantly improved, the amount of concrete that can be loaded is increased as compared with the conventional vehicle, and the work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a concrete transport vehicle according to the present invention.

FIG. 2 is a side view of the concrete storage and discharge device in FIG.

FIG. 3 is a plan view of the concrete storage and discharge device.

FIG. 4 is a cross-sectional view of the concrete storage and discharge device of FIG. 2 taken along the line IV-IV.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Concrete conveyance vehicle 20 Concrete storage and discharge apparatus 21 Hopper (concrete storage part) 24 Belt conveyor 40 Dump truck (vehicle) 40a Loading bed

Continuation of the front page (72) Inventor Tokutoku Sakamoto 2-5-8 Kitaaoyama, Minato-ku, Tokyo F-term (reference) 3F076 AA07 CA02 CA04 CA07 DA27 DB02

Claims (1)

[Claims] 1. A vehicle equipped with a carrier and a concrete storage and discharge device removably mounted on the vehicle carrier, the concrete storage and discharge device containing concrete therein and discharging concrete at a lower end. And a belt conveyor for transporting the concrete discharged from the opening of the concrete storage unit to a position higher than the opening behind the loading platform. Characteristic concrete transport vehicle.