JPH0344882B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a washing sewage storage device for a concrete mixer truck. This invention relates to a washing sewage storage device for a concrete mixer truck, which temporarily stores the washing sewage when ready-mixed concrete is washed at a discharge work site, and transports it to a designated disposal site or treatment plant before disposing of it. This is used in the field of preventing environmental pollution caused by washing sewage from concrete mixer trucks.

[Prior art]

Concrete mixer truck 1 as shown in Figure 1
After the fresh concrete in the drum 2 is discharged through the discharge chute 3, the fresh concrete adhering to the interior of the drum 2, hopper 4, and chute 3 is generally washed with water or the like at the work site. Among the cleaning wastewater generated at this time, the wastewater that washes the drum is inevitably stored in the drum.
Although there is almost no spillage, sewage from cleaning hoppers and chute is often flushed away at work sites, causing environmental pollution, so countermeasures are being taken to prevent this. As an example of 2 and 3, although not shown, a sewage storage tank is provided in the vehicle body in a removable manner.
Washing waste water from the discharge chute is guided with a hose, stored, and transported to a disposal site, after which the tank is removed from the vehicle body and disposed of.
(No. Publication), a tank is suspended from the lower end of the discharge chute, and the washing wastewater is poured directly into the tank, and then stored in the vehicle body.
There are some that open the bottom of the tank and dispose of it at a disposal site (Publication of Utility Model Publication No. 58-498).

However, the weight of the tank in which washed wastewater is stored is
It often reaches up to 20 kg. In the case of the former publication mentioned above, when disposing of the washed sewage, and in the latter case, when storing the tank, the operator must raise and lower the tank, which not only makes the work hard but also makes it difficult to dispose of washed sewage. It takes time to store and dispose of it.

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems. In addition to eliminating heavy labor,
An object of the present invention is to provide a washing sewage storage device for a concrete mixer truck that can completely prevent environmental pollution by surely introducing washing sewage from a discharge chute into a sewage storage tank.

[Means for solving problems]

The structure of the present invention will be explained with reference to FIG. 2a. A shaft body 12 is provided upright on the vehicle body below the ready-mixed concrete discharge chute 3, and a swing arm 14 is provided to be able to freely rotate around this shaft body 12. On the other hand, a hollow shaft 16 is fixed to the sewage storage tank 11, passing through the approximate center of the inside of the sewage storage tank 11.
6 by penetrating the pivot arm 14,
Each lashing that enables the wastewater storage tank 11 to horizontally rotate around the shaft body 12 and to vertically rotate around the rotation arm 14, and prevents horizontal and vertical rotation of the wastewater storage tank 11. This is a washing sewage storage device for a concrete mixer truck in which bodies 22 and 27 are provided.

[Effect]

When the sewage storage tank 11 is horizontally rotated with its vertical rotation prevented, the sewage storage tank 11 is moved directly below the discharge chute 3 and can store the washed sewage from the discharge chute 3. Further, if the wastewater storage tank 11 is rotated vertically without blocking or preventing horizontal rotation, the washed wastewater is discarded from the wastewater storage tank 11.

〔Effect of the invention〕

The present invention enables the sewage storage tank to be rotated horizontally and vertically around the approximate center of the sewage storage tank, making it easy to store and dispose of washed sewage in the sewage storage tank without requiring heavy labor. And it is carried out smoothly. Furthermore, since the sewage tank is provided with a securing body that prevents horizontal and vertical rotations of the sewage tank as necessary, the attitude of the sewage tank can be maintained and the tank can be safely stored in the vehicle body. Therefore, there is no longer any risk of spilling washed sewage onto work sites or roads, and even if the amount of washed sewage is large, simply increasing the capacity of the sewage storage tank will reduce the burden on workers. It is possible to avoid environmental pollution caused by wastewater that cannot be stored completely.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof.

Sewage storage tank 11 of washed sewage storage device 10
As shown in FIG. 1, is installed at the rear of the concrete mixer truck 1 and below the discharge chute 3 so as to be able to rotate horizontally and vertically. In the detailed views of FIGS. 2a and 2b, reference numeral 12 denotes a shaft body, which is erected and fixed to a part of the chassis frame 13 below the discharge chute 3, as shown in FIG. 3, and 14 is a shaft body. Hollow shaft 1 fitted into 12
5 via a member 14a, and is capable of horizontal rotation. 16 is sewage storage tank 1
A rotating arm 14 is inserted through the hollow shaft 16, and the sewage storage tank 11 is mounted vertically rotatably around the rotating arm 14. There is. In addition, 17 is a fastening metal fitting, and the rotating arm 14 is attached to the hollow shaft 1.
By inserting a pin (not shown) into a pin hole 18 drilled at the end of the swing arm 14, the sewage storage tank 11 and the swing arm 14 are prevented from coming off after being inserted into the tank 6. It is integrated. Reference numeral 19 denotes a lid of the sewage storage tank 11, which has a handle 20 attached to its upper surface and is rotatably mounted around a shaft 21 that penetrates through the inside of the sewage storage tank 11 and is fixed. Note that the shape of the wastewater storage tank 11 is not limited to the box shape shown in the figure, but it is preferable that the tank has a relatively large opening at the top in order to easily receive the washed wastewater from the discharge chute 3. Reference numeral 22 denotes a securing body that prevents horizontal rotation of the wastewater storage tank 11, and as shown in FIG. 4, a horizontal U-shaped bracket 23 into which the tip of the rotating arm 14 is fitted is fixed to a part of the chassis frame. At the same time, a pin hole 25 for inserting a pin 24 is bored in the bracket 23. Note that the pin 24 is held on the vehicle body via a chain 26,
Its falling off is prevented. This horizontal swivel securing prevents the sewage storage tank 11 from turning while the vehicle is running; therefore, although not shown, for example, a protrusion may be provided on the front or side surface of the sewage storage tank 11 and this may be secured to the vehicle body. If the sewage storage tank 11 is rectangular, a removable rod or plate is applied to a part of the chassis frame so as to contact the front or side of the sewage storage tank 11, and the sewage storage tank 11 can be rotated. You may also be able to prevent this. Reference numeral 27 denotes a lashing body that prevents vertical rotation of the wastewater storage tank 11 around the swing arm 14. As shown in FIG. and insert the pins 30 into the respective pin holes 31 and 32.
is inserted to enable or prevent the vertical rotation of the wastewater storage tank 11, regardless of whether or not the wastewater storage tank 11 rotates.
Note that the pin 30 is held on the vehicle body via a chain 33. This lashing only needs to be released so that the sewage storage tank 11 can rotate vertically when the vehicle is stopped, so it is not limited to the above-mentioned configuration, but other known lashing bodies using hooks or the like may be used. The things that may be done are the same as those for the lashing body 22 described above.

According to the embodiment with the above-described configuration, cleaning wastewater can be stored, transported, and disposed of in the following manner.

When the concrete mixer truck arrives at the work site and discharges the ready-mixed concrete in the drum 2, the discharge chute 3 is rotated by a cylinder or the like (not shown) in the direction perpendicular to the solid line or dashed line in FIG. Fresh concrete is discharged in the direction of. When the discharge is completed, the ready-mixed concrete adhering to the hopper and discharge chute 3 is washed by flowing water from the hopper or by spraying water on the discharge chute 3 with a hose before it solidifies. At this time, the operator first pulls out the pin 24 of the lashing body 22 from the bracket 23 to release the lashing of the swing arm 14. Therefore,
Move the sewage storage tank 11 from the solid line shown in FIG.
Manually rotate it horizontally and move it to the position indicated by the two-dot chain line.

At this time, the sewage storage tank 1 by the securing body 27
Vertical rotation about the rotation arm 14 of the first rotation arm 14 is maintained in a blocked state. Next, the worker
Turn the handle 20 shown in the arrow 35 direction to remove the lid 19.
is rotated about the shaft 21 and opened as shown by the two-dot chain line in FIG. 2a. Therefore, the operator moves the discharge chute 3 from the one-dot chain line position to the open sewage storage tank 11 at the two-dot chain line position using a turning mechanism such as a cylinder (not shown) and a vertical movement mechanism, and then uses the hopper and discharge Clean chute 3. At this time, the cleaning wastewater is guided by the lid 19 and stored in the wastewater storage tank 11 to prevent spillage. After cleaning is completed, wastewater storage tank 11
When the washed waste water is stored, the discharge chute 3 is retracted, the lid 19 is manually closed, and the discharge chute 3 is horizontally rotated in the opposite direction of the arrow 34 in FIG. do. After storage, the pin 24 of the lashing body 22 shown in FIG. 4 is inserted into the pin hole 25, and the vehicle can run while the horizontal rotation of the wastewater storage tank 11 is prevented. At this time, the concrete mixer truck transports the washed sewage from the work site to the disposal site or treatment plant while the prevention of vertical rotation by the lashing body 27 is maintained.

At the disposal site, a worker must secure the lashing body 27 shown in Figure 5.
When the pin 30 is removed from the brackets 28 and 29, the wastewater storage tank 11 can be pivoted around the pivot arm 14. Note that since the bracket 28 fixed to the sewage storage tank 11 is located below the bracket 29 fixed to the hollow shaft 15, the sewage storage tank 11 rotates only in the direction of the arrow 36 as shown in Fig. 2c. The lid 19 is opened as shown by the two-dot chain line, and the lid 19 is opened with this rotation or manually.
Washed wastewater is disposed of from the wastewater storage tank 11.
If it is more convenient to rotate the sewage storage tank 11 during disposal work, rotate the sewage storage tank 11 in the same way as when storing washed sewage as described above, and then use the lashing body 27 to vertically rotate the sewage storage tank 11. All you have to do is release the rotation constraints. In these operations, pins 24 and 30 of each lashing body are connected to chains 26 and 33, respectively.
Since it is held in the car body through a holder, it can be easily removed by simply removing it. When the disposal of washed wastewater is completed, the wastewater storage tank 11 is rotated to its original state, its vertical rotation is prevented by the securing body 27, and the lid 19 is closed. If necessary, the tank is rotated horizontally and the empty wastewater is removed. The storage tank 11 can be returned to the initial position shown by the solid lines in FIGS. 1 and 2 a and b and stored in the vehicle body, and the lashing body 22 can prevent horizontal turning and allow the vehicle to run. . It goes without saying that almost the same procedure is used in cases where a different securing body than the one described above is employed to prevent horizontal rotation and vertical rotation.

[Brief explanation of drawings]

Fig. 1 is a view of the washed sewage storage device of the present invention installed on a vehicle body, Fig. 2a is a main part view taken along the - arrow in Fig. 1, and Fig. 2b is a view taken along the - arrow in Fig. 1; Figure 2c is a view taken along the - line in figure a, Figure 3 is an enlarged view of the center of horizontal rotation of the sewage storage tank, and Figure 4 is an enlarged view of the horizontal rotation center of the wastewater storage tank.
FIG. 5 is an enlarged perspective view of the horizontal rotation preventing lashing body as viewed from the arrow - in FIG. 2B, and FIG. DESCRIPTION OF SYMBOLS 1...Concrete mixer truck, 3...Discharge chute, 10...Washing sewage storage device, 11...Sewage storage tank, 12...Shaft body, 14...Swivel arm, 16...Hollow shaft, 22, 27... ...Bound body.

Claims (1)

[Claims] 1. A shaft is installed upright on the vehicle body below the discharge chute of ready-mixed concrete, and a swing arm is provided to be able to freely rotate around this shaft.On the other hand, the sewage storage tank has a hollow hole that penetrates approximately the center of the inside of the sewage storage tank. A shaft is fixed to the hollow shaft, and the rotating arm is passed through the hollow shaft so that the sewage storage tank can be horizontally rotated around the shaft, and vertically can be rotated around the rotation arm, and the sewage storage tank can be rotated horizontally. and a washing sewage storage device for a concrete mixer truck, characterized in that each is provided with a securing body for preventing vertical rotation.