JPS6237688Y2 - - 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 hanging 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. For this reason, some vehicles are known to have a dedicated sewage storage tank located low at the rear of the vehicle to directly receive the sewage from the chute, but even in this case, the sewage must be disposed of at the base where the sewage is returned. The disadvantage is that it cannot be disposed of easily.

This idea was made in view of the above circumstances,
The rear of the concrete mixer vehicle is covered with a top plate on its top and has a socket at one end that also serves as a drainage outlet, and is a long piece of sewage that receives the sewage discharged from the discharge chute into the socket in an almost horizontal state. The tank is
Its length direction is aligned approximately parallel to the width direction of the vehicle body, and its approximately central portion in the length direction is pivotally supported by a rotation hinge so that it can be freely rotated up and down within a plane approximately perpendicular to the width direction of the vehicle body, and the above-mentioned The sewage tank is equipped with a locking mechanism that locks the sewage tank to the vehicle body in a horizontal position, allowing the sewage stored in the sewage tank to be easily discharged to a designated disposal location by rotating the sewage tank. The purpose of the present invention is to provide a sewage storage device for a concrete mixer truck that enables the use of concrete mixers.

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 discharge chute 3 is located outwardly from the discharge chute 3, with the discharge port 3a below the base end of the discharge chute 3, and is rotatably supported horizontally on the vehicle body 1 by a shaft 4, as is well known in the art.

A mounting bracket 5 is attached to the center of the back of the rear floor 2 facing rearward of the vehicle body 1, and a mounting bracket 5 is attached to the lower surface of the vehicle body 1.
A long sewage tank 6 facing in the width direction of the vehicle body 1 is freely rotatable up and down in a substantially vertical plane along the width direction of the vehicle body 1 via a rotation hinge 7 fixed to the longitudinal center of the upper surface. is attached to. The sewage tank 6 is comprised of a box-shaped storage section 6a and a hopper section 6b connected to one end of the storage section 6a. The housing portion 6a has a frame body (top plate) 6 made of an iron plate whose front and rear parts are bent downward to form a U-shaped cross section.
0, and the front and rear edges 62, 62 are attached to both bent parts 61, 61 of this frame 60, and the intermediate part 63 is bent downward into an elongated arc shape, so that the front and rear walls and bottom of the housing part 6a are bent. A tank main body 64 made of a flexible plate material such as rubber or plastic forming a tank main body 64 and the front and rear edges 62, 62 are sandwiched between the bent parts 61, 61 and tightened with bolts 65, 65. I was hit,
A holding plate 6 for liquid-tightly attaching the tank main body 64 to the frame body
6, 66, and a side plate 67 that is liquid-tightly coupled to the frame body 60 and the tank main body 64 and closes the other end of the accommodating portion 6a. The housing part 6a
When the hopper part 6b is in a horizontal position, the hopper part 6b is formed to stand up obliquely upwards with respect to the storage part 6a, and the socket 6c provided at the upper end of the hopper part 6b is in this state for discharging water toward the side of the vehicle body 1. The lower part of the outlet 3a of the chute 3 is surrounded, and the upper end of the outlet 6c is the outlet 3.
It is positioned above point a. The bottom surface of the hopper part 6b can be rotated around the support shaft 7 so that the hopper part 6b side thereof is lowered, and the hopper part 6b is placed horizontally in the rotational position where it is in contact with the road surface. The sloped surface 6d is such that it comes into close contact with the road surface.

In addition, in the above rotational position, the tip of the socket 6c on the side of the vehicle body is located at the lowest position in the waste water tank 6, and the socket 6c also serves as a drain port. Furthermore, although the hopper 6b is shown as an example in which the whole is formed integrally with an iron plate, as shown by the two-dot chain line in FIG. Bend the flexible tank main body 64 of the housing part 6a to the bent part 60a and extend it to the right.
Both edges of the bent portion may be fixed with bolts via a presser plate.

On the other hand, on the side of the rear floor 2 above the sewage tank 6, a locking plate 8 having a locking hole 8a is provided.
a is located below the rear floor 2. Further, on the upper surface of the accommodating portion 6a located below the locking plate 8 in the horizontal position of the sewage tank 6,
A support plate 9 is provided upright having a support hole 9a coaxial with the locking hole 8a at a distance from the locking hole 8a in the horizontal position. A support rod 11 biased toward the locking hole 8a by a biasing spring 10 housed in a spring receiver 9b fixed to the support plate 9 is inserted into the support hole 9a so as to be freely slidable in the axial direction. There is. On the opposite side of the support rod 11 from the locking plate 8, there is a handle portion 8b bent at a right angle.
is attached, and when the handle portion 8b is rotated up and down while contacting the guide plate 12, which is provided on the end face of the spring receiver 9b and has an inclined surface along the circumferential direction,
The handle portion 8b abuts on the slope of the guide plate 12 and is guided so that the support rod 11 moves in the width direction of the vehicle body 1 and enters and exits the locking hole 8a. That is, the locking plate 8, the support plate 9, and the biasing spring 10
and the support rod 11 constitute a locking mechanism K.

The locking mechanism K includes a handle portion 8b, a spring receiver 9b,
The biasing spring 10 and the guide plate 12 may be omitted, and instead of the support rod 11, an ordinary bolt may be simply inserted through the locking hole 8a and the support hole 9a and fastened with a nut.

Further, a cleaning hose 13 inside the sewage tank 6 is inserted through the frame body 60 into the side opposite to the hopper section 6b of the sewage tank 6, and this cleaning hose 13 is inserted into the upper part of the accommodating section 6a. The cleaning hose 13 in the housing part 6a has a large number of injection holes 13a, such as fissures, randomly opened toward the side wall and bottom of the wastewater tank 6. The cleaning hose 13 is connected to a water tank (both not shown) through a pump provided on the vehicle body 1, so that water can be injected into the sewage tank 6 from the injection hole 13a.

The frame body 60 of the sewage tank 6 also serves as the rear bumper of the vehicle body 1.

Further, 68 in the figure is a handle fixed to the upper surface of the frame 60.

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

When cleaning the fixed chute or discharge chute 3 at the discharge port of the rotary drum after discharging fresh concrete from the rotary drum of a mixer truck at a construction site, etc., insert the support rod 11 into the locking hole 8a of the locking plate 8. The discharge chute 3 is rotated relative to the sewage tank 6 which has been placed in a horizontal position, and the discharge port 3a of the discharge chute 3 is placed into the socket 6c of the sewage tank 6, and then the discharge chute 3 is cleaned. Washing wastewater passes through the hopper part 6b from the socket 6c, enters the storage part 6a, and is stored in the wastewater tank 6. Here socket 6
The upper end of c is located above the outlet 3a, and the upper end of the outlet 6
c surrounds the discharge port 3a, the cleaning wastewater flowing down from the discharge port 3a is reliably accommodated in the wastewater tank 6 without scattering around the receiving port 6c.

Next, in order to dispose of the sewage stored in the sewage tank 6, first move the mixer truck 1 from the construction site etc. to a predetermined disposal site, and place it on top of the sewage discharge area at the disposal site.
Position the tip of the hopper part 6b of the sewage tank 6 in the horizontal position. Next, when the handle part 8b is grasped and pushed down to bring it into the state shown in FIG. The locking plate 8 moves in the axial direction toward the hopper part 6b side.
is removed from the locking hole 8a, and the sewage tank 6 is unlocked. Then, while supporting the sewage tank 6 with the handle 68, the sewage tank 6 is rotated to bring the inclined surface (bottom surface) 6d of the hopper portion 6b into contact with the ground as shown by the two-dot chain line in FIG. By this operation, the washed sewage contained in the sewage tank 6 is discharged from the socket 6c to the sewage discharge area. That is, wastewater can be disposed of by a simple operation such as pulling out the support rod 11 from the locking hole 8a and rotating the wastewater tank 6.

In addition, if sewage components remain in the sewage tank 6 even after performing the above-mentioned discharge operation, the tank main body 6
When a suitable blow is applied to the tank 3, the main body of the flexible tank is bent, so that the adhered sewage components are easily peeled off and drained from the socket 6c. Furthermore, the cleaning hose 13
By injecting water from the injection hole 13a as shown in FIG. 4, the sewage components remaining in the sewage tank 6 can be washed away. Note that the inside of the wastewater tank 6 can be freely cleaned by the above-mentioned injection.

On the other hand, the sewage tank 6 is located at the rearmost rear part of the vehicle body 1 and serves as a substitute for the rear bumper, so that the usual rear bumper can be omitted.

As explained above, this idea has the rear part of the concrete mixer truck covered with a top plate and a socket at one end that also serves as a drainage outlet, so that the sewage discharged from the discharge chute is kept in an almost horizontal state. The long sewage tank received by the above-mentioned socket has its length aligned almost parallel to the width direction of the vehicle body, and is pivotally supported approximately in the center of the length direction by a rotation hinge so that it is aligned almost perpendicularly to the width direction of the vehicle body. It is mounted so that it can freely rotate up and down within a plane, and the sewage tank is equipped with a locking mechanism that locks the sewage tank to the vehicle body in a horizontal position, so that it receives the washed sewage that flows down the discharge chute. The sewage can be easily stored in the sewage tank by receiving it at the mouth, and the sewage can be easily collected by releasing the sewage tank from the locking mechanism and rotating the sewage tank so that the drain port is facing down. Can be discharged.

In addition, the upper surface of the sewage tank is covered with a top plate, and the center portion of the sewage tank is pivotally supported by a rotation hinge, so that it can be rotated in a see-saw manner. Anyone can easily and accurately discharge the entire amount of sewage that entered the mouth from the socket and drain it into a gutter on the side of the vehicle body, which is dedicated to sewage, with a small amount of force. Or, there is no need to inadvertently scatter sewage over a wide area. Moreover, the free rotation of the discharge chute can be easily stopped by fitting the lower end of the discharge chute into the socket of the sewage tank.
Moreover, in such a case, there are no restrictions on the shape of the socket, and implementation is easy.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view of the rear of the concrete mixer truck.
The figure is a rear view of the concrete mixer truck, Figure 3 is a vertical cross-sectional view of the sewage tank, Figure 4 is a cross-sectional view of the sewage tank, and Figure 5 is a cross-section of the locking mechanism with the sewage tank unlocked. It is a diagram. 1...Vehicle body, 1a...Rear, 3...Exhaust chute, 3a...Exhaust port, 6...Sewage tank, 6c...
...Socket (drain port), K...Lock mechanism.

Claims (1)

[Scope of utility model registration request] The rear of the concrete mixer vehicle is covered with a top plate on its top and has a socket at one end that also serves as a drainage outlet, and is a long piece of sewage that receives the sewage discharged from the discharge chute into the socket in an almost horizontal state. The length of the tank is aligned approximately parallel to the width direction of the vehicle body, and the center portion of the length direction is pivotally supported by a rotation hinge so that it can freely rotate up and down in a plane approximately perpendicular to the width direction of the vehicle body. A sewage storage device for a concrete mixer truck, wherein the sewage tank is attached to the sewage tank, and the sewage tank is provided with a locking mechanism for locking the sewage tank to the vehicle body in a horizontal state.