JPS6123369Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for storing wastewater that has been washed from the discharge blades, chute, etc. of a concrete mixer truck.

Conventionally, in concrete mixer trucks, wastewater from the chute and other cleaning equipment was directly disposed of at the work site. However, recently, pollution problems have become a hot topic, and it has become impossible to dispose of cleaning wastewater on roads and work sites.
This was collected by a bucket suspended from the tip of the chute and poured into the drum through a hopper for pouring fresh concrete, and then when the concrete returned to the base, it was discharged at the base's car wash. However, in order to dump wastewater from the hopper into the drum, there is not only the inconvenience of having to carry a fairly heavy bucket in one hand up and down the narrow steps to the hopper, but also the constant danger. be.

This idea was made in view of the above circumstances, and the sewage receiving box, which has a receiving plate to prevent sewage from scattering, is placed below the discharge chute of the concrete mixer truck on the rear floor of the vehicle body and rotates horizontally via a hinge. By forming a drainage port that can be freely opened and closed at the bottom of this sewage receiving box, cleaning sewage from discharge chute etc. can be stored in the sewage receiving box without flowing into the construction site or the street, and the sewage To provide a sewage storage device for a concrete mixer vehicle which facilitates drainage work by increasing the degree of freedom in positioning the drainage position at a sewage discharge site by horizontally rotating a receiving box.

This invention will be explained below with reference to the drawings.

The drawing shows one embodiment of this invention. In the drawing, 1 shows the body of a concrete mixer truck, and a rear floor 2 protrudes toward the rear of the vehicle body 1 at the center in the width direction of the rear part 1a of the vehicle body 1. It is provided. Above this rear floor 2, there is a long discharge chute 3 for discharging fresh concrete, and a discharge port 3a at the tip of this discharge chute 3 is connected to the rear floor 2.
The exhaust chute 3 is located outside the exhaust chute 3, with the exhaust port 3a at the tip thereof being below the base end of the exhaust chute 3, and is horizontally rotatably supported on the vehicle body 1 by a shaft 4, as is well known in the art. There is. This discharge chute 3 can be housed in the vehicle body 1 by directing its discharge port 3a outward in the width direction of the vehicle body 1. At the rear of the vehicle body 1 and on the rear side of the rear floor 2 (right side in FIG. 1), a hinge 5 fixed to the right corner of the end of the rear floor 2 is connected to the width of the outlet 3a. A sewage receiving box 6 having a similar width is horizontally rotatably attached. The sewage receiving box 6 is mainly composed of a receiving box 6a with an open top and an upper plate 6b covering the top of the receiving box 6a.
Further, the top plate 6b has a mark located below the discharge port 3a of the discharge chute 3 in the storage position at a predetermined rotational position in which the side surface of the sewage receiving box 6 is aligned with the rear side surface of the rear floor 2 of the vehicle body. A socket 6c is opened. Further, at the bottom of the receiving box 6a below the receiving port 6c on the side far from the mounting position of the hinge 5, there is a drain tube 7 having a flange 7a at the lower end and a drain port 7b at the lower end. The upper end thereof is attached to the bottom wall of the receiving box 6a vertically and is attached to the lower surface side of the flange 7a of this liquid drain tube 7. At the rotational position, it comes into close contact with the flange 7a, and at the other rotational positions, the drain port 7b
A lid plate 7c for opening is attached. Further, the cover plate 7c is attached to the flange 7a so as to be openable and closable by means of a bolt 8 and a nut 9 provided at an end of the cover plate 7c opposite to the hinge joint.

On the other hand, the upper surface plate 6b is a portion surrounding the socket 6c of the upper surface plate 6b and is on the outside in the width direction of the vehicle body 1.
A U-shaped planar receiving plate 10 made of a rubber material or the like is erected on a part of the board, and the height of this receiving plate 10 is such that the upper side of the receiving plate 10 is connected to the discharge port 3a of the discharge chute 3. It is set so that it is positioned above the bottom edge of.

Incidentally, reference numeral 12 shown in FIGS. 2 and 3 is a bracket provided protruding from the rear side surface of the rear floor 2, on which the sewage receiving box 6 is placed.
A support plate 12a is provided at the tip of the bracket 12. Reference numeral 11 denotes a locking plate fixed diagonally to the hinge 5 mounting portion of the sewage receiving box 6, and when the sewage receiving box 6 is rotated and placed on the bracket 12, the locking plate 11 is fixed. The support plates 12a are arranged to overlap, and the locking plate 11 and the support plate 12
A coaxial hole is formed in a, and a fixing pin 13 is removably inserted into this coaxial hole.

Next, the operation of this device constructed as above will be explained.

Normally, the sewage receiving box 6 is placed on the bracket 12 at a predetermined rotational position along the end side surface of the rear floor 2, and the sewage receiving box 6 is placed on the bracket 12 with the locking plate 11 and the support plate 12a.
It is fixed so that it does not rotate by a fixing pin 13 inserted into the coaxial hole of.

After discharge of fresh concrete at the site, etc., the discharge chute 3 is placed in a stored state with the discharge chute 3 facing the width direction of the vehicle body 1, the discharge port 3a of the discharge chute 3 is positioned above the socket 6c, and the discharge blade or the discharge chute 3 is Perform cleaning. Then, the cleaning wastewater is transferred to the discharge chute 3 via the discharge chute 3.
The wastewater flows into the receiving box 6 from the discharge port 3a through the receiving port 6c of the sewage receiving box 6 and is stored therein. Therefore, cleaning wastewater does not flow into the work site. Further, the receiving plate 10 prevents the waste water from scattering beyond the socket 6c when the waste water is allowed to flow in.

Next, after the cleaning work is completed, the wastewater is returned to the base and placed in the wastewater receiving box 6.
The cleaning wastewater that has accumulated in the tank is discharged.
The vehicle body 1 is parked at a predetermined drainage location within the base.
Next, the fixing pin 13 is removed and the wastewater receiving box 6 is rotated horizontally around the hinge 5 so that the drainage outlet 7b is positioned above a predetermined drainage location.
Then, the bolt 8 is removed, the cover plate 7c is separated from the flange 7a, the drain port 7b is opened, and the wastewater is allowed to flow to the drainage location.

Furthermore, since the wastewater can be stored in the wastewater receiving box 6 until it reaches the drainage location, there is no need to climb a narrow step to the hopper and throw the wastewater into the drum. Therefore, there is no inconvenience or danger as in the past. In the above embodiment, the sewage receiving box 6 is located at the right rear side of the rear floor 2 of the vehicle body, and a bracket is provided on the left rear side of the rear floor 2, as shown in FIG. The box 6 may be placed in a fixed position.

As explained above, this invention has a receiving plate for preventing sewage from scattering below the discharge chute and at the rear of the rear floor so that the sewage receiving box can be rotated horizontally, and a cover plate is attached to the bottom of the sewage receiving box. Since the drainage port is formed to be openable and closable, cleaning wastewater generated when cleaning the discharge blade and discharge chute at a work site or on the road can be stored in the wastewater receiving box. Therefore, it is not necessary to drain the cleaning wastewater into the work site or the street. Furthermore, since the receiving plate prevents the washed sewage from scattering when the washed sewage flows into the sewage receiving box, the work site and the road will not become dirty. On the other hand, when discharging the collected washed wastewater at a designated drainage location within the base,
Washed wastewater can be disposed of with a simple operation such as opening the cover plate of the drainage port of the wastewater receiving box.
A large amount of cleaning sewage is placed in the sewage receiving box, and it can be easily done by one worker without requiring much labor.
Furthermore, by forming a drain port on the bottom of the side far from the hinge position for rotating the wastewater receiving box, and rotating the wastewater receiving box in the horizontal direction, the position of the drain port can be adjusted to a predetermined position. Since it can be moved within a range, the drainage location can be freely selected within the above rotation range, making drainage work easier.In addition, the locking means allows the sewage receiving box to be locked to the rear of the vehicle body at a predetermined rotation position. Because it can be stopped, the sewage receiving box can be securely fixed when the concrete mixer truck is running or when storing sewage, and not only does it not interfere with driving on the road, but also prevents washed sewage from spilling outside the sewage receiving box. do not have. In addition, it eliminates the inconvenience caused by the conventional work of climbing narrow steps to collect the washed wastewater in the drum.
No danger arises.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a rear view, FIG. 2 is a side view, and FIG. 3 is a schematic plan view. 1...Vehicle body, 1a...Rear, 3...Exhaust chute, 3a...Exhaust port, 5...Hinge hinge, 6...
Sewage receiving box, 6c... Socket, 7b... Drain port, 7
c... Lid plate, 10... Receiving plate, 11... Locking plate, 1
2a...support plate, 13...fixing pin.

Claims (1)

[Scope of utility model registration request] Below the ready-mixed concrete discharge chute 3 of the concrete mixer vehicle, a sewage receiving box 6 that accommodates washed sewage flowing down the discharge chute at a predetermined rotational position is rotatable in the horizontal direction toward the rear part 1a of the vehicle body by means of a hinge 5. A socket 6c for receiving the washed wastewater is formed at the top of the sewage receiving box, and a lid plate 7c is provided at the bottom of the sewage receiving box on the side far from the hinge. A drain port 7b is formed freely, and a receiving plate 10 is provided upright near the receiving port formed in the upper part of the wastewater receiving box to prevent the washing wastewater from scattering. A concrete mixer vehicle characterized in that locking means 11, 12a, 13 for locking the sewage receiving box to the rear part of the vehicle body in a moving position are provided between the sewage receiving box and the rear part of the vehicle body. sewage storage equipment.