JP7086255B2 - Guidance device for discharged sewage in garbage trucks - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention is a garbage truck in which a garbage truck provided with a dust pushing device is provided on the rear wall of an opening of a garbage truck mounted on a vehicle body frame so as to be undulating and rotatable rearward. The present invention relates to a guide device for discharged sewage in a garbage truck, which can suppress the scattering of sewage discharged from the sewage tank of the garbage truck to the outside of the vehicle during rotation.

Conventionally, in the dust truck, the dust input box is provided with a sewage trough that receives sewage from the stored dust, a sewage tank that collects sewage in the sewage trough, and a water guide pipe that guides the sewage in the sewage trough to the sewage tank. Further, a sewage leakage prevention device for a dust truck is known (see Patent Document 1 below).

Japanese Patent No. 4832246

By the way, as a procedure for disposing of dust by a garbage truck, the garbage truck after collecting the dust reaches the dust disposal facility and then stops in the reverse direction, and the rear part is attached to the pit of the dust disposal facility, and the dust input box is moved backward. After turning upright to open the doorway, the dust storage box is dumped or the discharge plate provided there is pushed out so that the dust stored in the dust storage box is discharged into the pit. In addition, the sewage in the sewage tank is discharged through the headrace pipe.

However, depending on the reverse stop position of the garbage truck in the dust treatment facility, all the sewage may not fall into the pit but fall on the platform of the dust treatment facility, and the sewage from the headrace pipe is on the side of the headrace pipe. It falls straight down along the wall and scatters from the ground in all directions.

At this time, if a person such as a cleaner of the garbage truck is waiting next to the garbage truck, there is a problem that the sewage scattered on the outside of the garbage truck may fall on the person.

The present invention has been made in view of such circumstances, and when the dust input box is upright and rotated before the dust is discharged, the sewage is scattered inside the dust storage box by the inclined surface provided in the water guide pipe. It is an object of the present invention to provide a guide device for discharged sewage in a new garbage truck so that the sewage does not fall on a person.

In order to achieve the above object, the invention according to claim 1 mounts a dust storage box on a vehicle body frame, and allows the dust storage box to undulate and rotate backward on the rear wall of the opening of the dust storage box. In a dust truck that is provided so that the dust thrown into the dust input box is pushed and stored in the dust storage box.
The dust input box has a sewage gutter that receives the discharged sewage from the stored dust, a sewage tank that collects the sewage in the sewage gutter, and a position that is biased to the left or right from the vertical center line of the dust input box. A drainage pipe that connects the sewage gutter and the sewage tank is installed.
The water guide pipe is provided with an inclined surface that guides the sewage flowing back from the sewage tank to the sewage gutter when the dust input box is upright and rotated inward in the left-right direction of the vehicle body frame. It is characterized in that a lower wall surface of a water guiding pipe and a backflow prevention plate for cooperatively preventing backflow are provided so as to extend in directions orthogonal to the vertical center line of the dust input box .

In order to achieve the above object, the invention according to claim 2 is the invention according to claim 1, wherein the lower wall surface of the water guide pipe is provided by extending the wall surface of the sewage tank. It is a feature.

According to the inventions described in claims 1 and 2 , the sewage flowing in the water guide pipe is transferred to the water guide pipe when the dust input box is upright and rotated backward before the stored dust in the dust storage box is discharged. It can flow toward the inside of the vehicle along the provided slope and drop it on the platform of the garbage truck, making it difficult for it to scatter outside the vehicle, and the cleaners on the left and right of the garbage truck will be exposed to sewage. Can be suppressed.

Side view of a garbage truck provided with a guide device for discharged sewage of the present invention. Enlarged view of the virtual line enclosure part of Fig. 1 Sectional drawing along line 3-3 of FIG. Partial perspective view of the dust container in Fig. 2 (A) is an enlarged cross-sectional view taken along line 5A-5A of FIG. 3, and (B) is an enlarged cross-sectional view taken along line 5B-5B of FIG. Enlarged cross-sectional view along line 6-6 of FIG.

Embodiments of the present invention will be specifically described below based on the embodiments of the present invention exemplified in the accompanying drawings.

In FIGS. 1 and 2, the garbage truck 1 is mounted on the body frame F of the garbage truck V. The dust storage box 1 is formed in a box shape, and then the wall 2 is inclined rearward from the upper part to the lower part, and then the doorway 3 is opened in the wall 2. The dust storage box 1 can be dumped rearward, the trailing edge 4r of the bottom wall 4 is formed on an inclined surface having a downward slope over the entire width thereof, and the trailing edge 4r is an opening of a sewage gutter 13 described later. It faces the top surface.

A dust input box 6 is connected to the rear wall of the dust storage box 1. The dust input box 6 is connected to the upper part of the rear wall 2 of the dust storage box 1 with a hinge shaft 7 so that the upper part of the front wall thereof can stand up and rotate backward. A dust pushing port 8 communicating with the doorway 3 is opened in the front wall of the dust throwing box 6, and a worker or the like can throw dust into the dust throwing box 6 in the lower half of the wall thereafter. The dust input port 9 is opened. A conventionally known dust pushing device 10 is provided in the dust throwing box 6, and by the operation of the dust pushing device 10, the dust thrown into the dust throwing box 6 is pushed into the dust storage box 1. A telescopic cylinder 11 is connected between the upper parts of the left and right sides of the rear wall of the dust storage box 1 and the middle portion of the left and right side walls of the dust input box 6, and the expansion operation of the telescopic cylinder 11 causes the dust input box. 6 can be rotated backward (at the chain line position in FIG. 1) around the hinge shaft 7, and the dust storage box 1 is pushed backward by a dump or a discharge plate (not shown) provided inside the dump. , The stored dust inside it can be discharged to the outside.

By the way, sewage flows out from the dust during the pushing operation and the dust contained in the dust storage box 1, but this sewage may be collected in the sewage tank 15 described later and leak out to the outside of the dust truck V. do not have.

As shown in FIGS. 2 to 5, a sewage gutter 13 is integrally laid below the dust insertion port 8 of the dust input box 6 over substantially the entire width thereof. The sewage gutter 13 is formed in a U-shape in cross section, and its left and right opening ends are closed by end walls 14. The sewage gutter 13 is located below the trailing edge of the bottom wall 4 of the dust storage box 1, and the sewage from the dust in the dust storage box 1 and the dust storage box 6 flows into the sewage gutter 13. ..

A sealed sewage tank 15 is provided at the bottom of the bottom wall of the dust input box 6, and the sewage tank 15 has substantially the same width as the width of the dust input box 6, and the upper wall 15u thereof is dust. It is formed by using the bottom wall of the input box 6, and the sewage tank 15 is formed flat in the vertical direction as a whole, and the above-ground height of the sewage tank 15 does not hinder the running of the waste wheel V. It is kept at a height. A drainage port 15h is bored in the upper wall 15u, and the sewage collected in the dust input box 6 flows to the sewage tank 15 through the drainage port 15h.

As shown in FIGS. 3 and 4, between the vertical center line CC of the dust input box 6 and the left and right walls thereof, the sewage gutter 13 and the sewage tank 15 communicate with each other. The pair of water guide pipes P and P are provided symmetrically, and the sewage that has flowed into the sewage gutter 13 passes through the water guide pipes P and P and the sewage tank 15 as shown by the solid line arrow a. It is designed to be guided by.

Since the pair of left and right water guide pipes P and P have the same structure, the specific structure of one of them will be explained mainly with reference to FIGS. It is formed and is configured by being liquid-tightly welded to the front wall 6f of the dust input box 6.

The water guide pipe P has inner and outer vertical wall surfaces 16i and 16o, vertical front wall surfaces 16f, and upper and lower wall surfaces 16u and 16d, and is formed in a cross-sectional channel shape. It is liquid-tightly welded to the front wall 6f of the box 6. The inlet of the water guide pipe P is communicated with the sewage gutter 13, and the outlet of the lower wall surface 16d thereof is communicated with the sewage tank 15.

As is clearly shown in FIG. 3, an inclined surface 17 is provided on the upper portion of the headrace pipe P to guide the sewage flowing in the headrace pipe P toward the sewage gutter 13. The inclined surface 17 is inclined upward from the outer vertical wall surface 16o of the water guide pipe P toward the inner vertical wall surface 16i, that is, the inside of the vehicle, and as shown in FIG. 5B, the inclined surface 17 is inclined. The upper edge 17u is inclined and connected to the upper wall surface 16u of the headrace pipe P. Then, as will be described later, the inclined surface 17 is adapted to guide the sewage flowing toward the sewage gutter 13 in the water guide pipe P to the inlet of the water guide pipe P.

Further, on the sewage tank 15 side (lower side of the vehicle) of the inclined surface 17, a backflow prevention plate 18 is provided on the inner vertical wall surface 16i of the water guide pipe P. The backflow prevention plate 18 extends inward from the inner vertical wall surface 16i to the middle of the water guide pipe P so as to face the outlet of the water guide pipe P and substantially parallel to the lower wall surface 16d. Then, as shown by the arrow b, the backflow prevention plate 18 can easily apply the sewage flowing back toward the sewage gutter 13 in the water guide pipe P to the inclined surface 17.

As shown in FIGS. 2 and 6, a rectangular drainage port 20 for draining the sewage stored therein is opened on one side surface of the sewage tank 15, and the drainage port 20 is opened and closed by the sewage lid 21. To. The central portion of the outer surface of the sewage lid 21 is swingably supported by an opening / closing arm 22 whose one end is rotatably supported by the sewage tank 15, and the inner surface of the sewage lid 21 has a swingable shaft support 25. A sealing member 24 that can seal the drainage port 20 in a liquid-tight manner is provided. At the free end of the opening / closing arm 22, a lashing tool 26 made of a toggle link for lashing the sewage lid 21 to the closed position is provided. The lashing tool 26 includes an L-shaped lever 27 rotatably supported by the free end of the opening / closing arm 22 and an engaging member 29 rotatably connected to the intermediate portion of the lever 27. Consists of. The engaging portion 29a of the engaging member 29 is engaged with the locking piece 31 projecting from the sewage tank 15 to rotate the lever 27 toward the sewage tank 15, and the connecting point 30 becomes the shaft fulcrum 28. When the line LL connecting the engaging portions of the engaging member 29 is crossed, the lashing tool 26 is locked and the drainage port 20 can be closed by the sewage lid 21 as shown by the solid line in FIG. If the connecting point 30 exceeds the line LL by rotating the lever 27 in a direction away from the sewage tank 15 (counterclockwise in FIG. 7), as shown in the chain line of FIG. 26 is unlocked, the sewage lid 21 can be opened, and the sewage stored in the sewage tank 15 can be discharged to the outside.

Next, the operation of this embodiment will be described.

The sewage that is pushed into the dust storage box 1 from the dust input box 6 and the sewage that flows out from the storage dust stored in the dust storage box 1 are the sewage gutter 13 as shown by the solid line arrow a in FIGS. 2 to 5. From there, it is stored in the sewage tank 15 via a pair of left and right water guide pipes P. Then, the stored sewage in the sewage tank 15 is discharged to the outside from the drain port 20 by opening the sewage lid 21.

By the way, in the process of treating dust by the dust collecting vehicle, the dust collected in the dust storage box 1 is discharged to the pit or the like of the dust treatment facility. At that time, the dust is stored in the dust storage box 1. Before discharging the dust, it is necessary to rotate the dust input box 6 backward (at the chain line position in FIG. 1) to open the rear wall 2 of the dust storage box 1. At that time, the sewage in the sewage tank 15 needs to be opened. Is drained to the outside through the water guide pipe P and the sewage gutter 13, and the sewage flowing in the water guide pipe P at that time is discharged to the inclined surface 17 as shown by the two-dot chain line arrow b in FIGS. It can flow along the inside of the vehicle and drop onto the platform of the wastewater treatment facility, and it can hit the ground inward and scatter a lot inward, making it difficult for sewage to scatter outside the vehicle. .. This makes it difficult for the cleaners on the left and right sides of the garbage truck to get sewage.

In order to clean the platform of the garbage truck immediately after the garbage is discharged by the garbage truck V, the cleaner may wait next to the garbage truck V until the garbage is discharged.

As shown in FIG. 3, since the right end of the backflow prevention plate 18 and the left end of the lower wall surface 16d of the water guide pipe P wrap in the vertical direction, the sewage in the sewage tank 15 leads to water when the vehicle suddenly stops while traveling. When backflowing into the pipe P, the backflow prevention plate 18 and the lower wall surface 16d can cooperate to dam the sewage.

Further, as shown by the two-dot chain arrow in FIG. 3, the backflow prevention plate 18 provided in the water guide pipe P easily guides the sewage flowing from the sewage tank 15 into the water guide pipe P to the inclined surface 17. This makes it possible to assist the discharge of sewage discharged in an oblique direction while ensuring the width of the entrance of the headrace pipe P. The backflow prevention plate 18 can have both a function of preventing backflow of sewage when the vehicle is suddenly stopped and a function of assisting the diagonal discharge of sewage when the dust input box 6 is upright and rotated.

The inclined surface 17 can guide the sewage flowing back in the headrace pipe P toward the inside of the vehicle and drop it onto the platform of the dust treatment facility, and the backflow prevention plate 18 can be dropped from the headrace pipe P to the inclined surface 17 It acts to guide the sewage that falls straight down without hitting the inclined surface 17 toward the inclined surface 17, and can assist the induction of the sewage by the inclined surface 17.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various embodiments are possible within the scope of the present invention.

For example, the inclined surface may be formed by inclining the outer vertical wall surface itself of the headrace pipe inward. Further, the number of water conveyance pipes may be one or three or more . Further , the loading device provided in the dust loading box is not limited to that of the above-described embodiment.

1 ・ ・ ・ ・ ・ Dust storage box 6 ・ ・ ・ ・ ・ Dust input box 13 ・ ・ ・ ・ Sewage gutter 15 ・ ・ ・ ・ Sewage tank
16d ・ ・ ・ Lower wall surface of water conveyance pipe
17 ... Inclined surface 18 ... Backflow prevention plate F ... Body frame P ... Water guide pipe CC ... Vertical center line

Claims (2)

A dust storage box (1) is mounted on the vehicle body frame (F), and a dust storage box (6) is provided on the opening rear wall (2) of the dust storage box (1) so as to be undulating and rotatable rearward. In a garbage truck in which the dust thrown into the dust input box (6) is pushed and stored in the dust storage box (1).
In the dust input box (6), there are a sewage gutter (13) that receives the discharged sewage from the stored dust, a sewage tank (15) that collects the sewage in the sewage gutter (13), and a vertical dust input box (6). A water guide pipe (P) that connects the sewage gutter (13) and the sewage tank (15) is provided at a position biased to either the left or right direction from the center line (CC).
The water guide pipe (P) has an inclined surface that guides the sewage flowing back from the sewage tank (15) to the sewage trough (13) inward in the left-right direction of the vehicle body frame (F) when the dust input box (6) is rotated upright. (17) is provided , and on the upstream side of the inclined surface (17) of the headrace pipe (P) in the backflow direction of the sewage, the sewage flows back to the sewage gutter (13) when the dust truck is running. The lower wall surface (16d) and the backflow prevention plate (18) of the water guide pipe (P) for working and preventing extend in the direction orthogonal to the vertical center line (CC) of the dust input box (6). A guide device for discharged sewage in a dust truck, which is characterized in that it is provided in this way . The guide for discharged sewage in the garbage truck according to claim 1, wherein the lower wall surface (16d) of the water guide pipe (P) is provided by extending the wall surface of the sewage tank (15). Device.

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