JP5354328B2 - Garbage truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning vehicle which has a simple structure allowing a screen to be provided vertical to a road surface, eliminating a need for a screen driving unit, etc., causes no trouble of the screen, and facilitates the cleaning of the screen. <P>SOLUTION: The upper end 10a of the screen 10 is connected to the upper side of a front board 16 of a hopper 4 that is vertical to the road surface F. The lower end 10b of the screen 10 can be fixed with a fastener 26, to the lower side of the front board 16 of the hopper 4 that is vertical to the road surface F. The screen 10 is, therefore, held almost vertical to the road surface F, preventing a problem that the screen 10 deforms due to dust accumulated thereon. When the screen 10 is cleaned, a tail door 18 is opened to allow a worker to face the screen 10, eliminating a need for moving the screen 10, with easy cleaning of the screen 10. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a cleaning vehicle provided with a screen that collects dust in a hopper by a dust collection device and suction air from a blower and removes dust in the suction air.

  The thing of patent document 1 is well-known as a conventional cleaning vehicle. In the cleaning vehicle of Patent Document 1, air is sucked by a blower, dust on a road surface is sucked up by a pickup head as a dust collecting device and collected in a hopper, the sucked dust is removed from the sucked air, and the blower removes dust. A screen for preventing suction is provided in the hopper parallel to the road surface. One end of the screen is pivotally supported, and the other end of the wire is connected to the other end of the wire. When cleaning the road surface, the sweeper pulls up the wire and raises the other end of the screen to place the screen in a dust removal position parallel to the road surface.When the screen is clogged with dust, the wire is pulled down to remove the screen. The other end is lowered and the screen is placed at an inclined cleaning position. In a state where the screen is in the cleaning position, the operator faces the screen, and the operator performs cleaning for eliminating clogging. At that time, the front side (upper side) of the screen can be easily cleaned. However, when the screen is cleaned, a manual winch as a driving device, a wire, a plurality of guide rollers, and the like are provided in order to set the screen to the cleaning position. Therefore, there is a problem that a structure for raising and lowering the screen is complicated. In addition, it is necessary to manually lift and lower the screen with a driving device or the like, and the work is troublesome, so that the cleaning of the screen has been neglected. In addition, since the screen is suspended from the popper horizontally on the road surface, dust tends to accumulate on the front side of the screen and wires, etc., and the screen is deformed by the weight of the attached dust, and the wire of the manual winch is cut. There was a problem that caused trouble.

JP 2007-284890 A

  The present invention is intended to provide a cleaning vehicle that is simple in structure in which a screen driving device or the like is not required by providing the screen perpendicular to the road surface, the screen is not hindered, and the screen is easier to clean. .

In the present invention, air in the hopper is sucked by a blower connected to the hopper, dust on the road surface is collected in the hopper through the dust collecting device by the sucked air, and dust contained in the sucked air is collected in the hopper. In a cleaning vehicle provided with a screen to be removed, an opening for sucking air in the hopper is formed in a front plate perpendicular to the road surface forming the hopper, and an upper end portion is connected to a plate member adjacent to the upper side of the front plate by a connecting member. A fastener for fixing the lower end of the screwed screen is provided on the lower side of the front plate. When cleaning the road surface, the lower end of the screen is fixed by the fastener, and as the screen moves away from the opening, When the screen is cleaned, the hopper is dumped to a predetermined position, and the screen with the fasteners released is fixed to the road surface. Characterized in that so as to be held vertically against.

In the invention of claim 1 of the present application, an opening for sucking air in the hopper is formed in the front plate perpendicular to the road surface forming the hopper, and the upper end portion is connected to the plate member adjacent to the upper side of the front plate by the connecting member. A fastener for fixing the lower end of the screwed screen is provided on the lower side of the front plate. When cleaning the road surface, the lower end of the screen is fixed by the fastener, and as the screen moves away from the opening, It is held with a slight inclination so as to rise, and when cleaning the screen, the hopper is dumped to a predetermined position so that the screen with the fasteners released is held perpendicular to the road surface. characterized in that it was. These inventions do not require a driving device, a wire, a guide roller, or the like as in the prior art, and the structure is simplified. In addition, since the screen is installed perpendicular to the road surface, even if the screen is not moved for cleaning the screen, the screen and the operator are facing each other so that cleaning can be performed immediately, and cleaning and maintenance within the hopper is facilitated. . In addition, since the structure is simplified and the screen is made substantially perpendicular to the road surface, it is difficult for dust to adhere to the screen, and troubles such as deformation of the conventional screen do not occur. Also, if you want to clean the back side of the screen, remove the detachable fastener at the bottom of the screen in the hopper and dump the hopper so that the screen is held perpendicular to the road surface and the back side of the screen can be seen Therefore, it is not necessary to separately provide a screen drive device and the like to raise and lower the screen, and the structure is simplified.

  Embodiments of the present invention will be described with reference to FIGS. As shown in FIG. 1, the cleaning vehicle 1 has a blower 3 and a hopper 4 mounted on a vehicle body 2, and a gut tub room 5 and a pickup head 6 as a dust collection device at the lower part of the vehicle body 2. The blower 3 is driven by a working engine 7 provided on the vehicle body 2. The blower 3 communicates with the pickup head 6 via a pressure feeding duct 8, and the pickup head 6 communicates with the hopper 4 via a suction duct 9 that is disposed inclined at the rear upper part. In the cleaning vehicle 1, the air in the hopper 4 is sucked by the blower 3, and the air flow from the blower 3 is sent to the pickup head 6 through the pressure feeding duct 8, and the dust on the road surface F swept up by the guttabroom 5 Is picked up from the pickup head 6 and collected in the hopper 4 through the suction duct 9. A screen 10 is provided in the hopper 4.

2 to 4, the hopper 4 includes a top plate 11, a left side plate 13 , a right side plate 12 , a bottom plate 14, a rear plate 15, a front plate 16 perpendicular to the road surface, a front cover 17 adjacent to the blower 3, and an upper portion. Is surrounded by a tail door 18 that is hinged to the rear plate 15. A dust storage box 19 is provided on the inclined surface of the front cover 17, and dust separated by a centrifugal force from a suction air flow is stored by a centrifugal dust separation device (not shown) provided integrally with the blower 3. The front plate 16 perpendicular to the road surface F is formed with an opening 20 for sucking suction air in the hopper 4, and a screen 10 is provided so as to cover the opening 20. The hopper 4 includes a hopper frame 21, and as is well known, a swing fulcrum 22 of the hopper frame 21 is pivotally attached to the vehicle body 2, and is interposed between the cylinder mounting portion 23 of the hopper frame 21 and the vehicle body 2. The dump cylinder (not shown) can dump backward with the swing fulcrum 22 as the center.

  The screen 10 is configured by stretching a wire mesh or expanded metal through which fine dust can pass through a rectangular frame. The screen 10 is hinged by a connecting member 25 to a plate member 24 whose upper end portion 10 a is close to the upper side of the front plate 16 perpendicular to the road surface F of the hopper 4. A lower end portion 10 b of the screen 10 can be fixed to a lower side of the front plate 16 perpendicular to the road surface F of the hopper 4 by a fastener 26 described later. In a state where the screen 10 is fixed by the fastener 26, the screen 10 is held substantially perpendicular to the road surface F, and is slightly inclined, that is, about several degrees so as to rise as it moves away from the opening 20 of the hopper 4 as shown in FIG. Is held with a slope of. The screen 10 may be provided with the dust side surface (surface facing the inner side of the hopper) 10 d of the screen 10 slightly inclined toward the upper side of the opening 20 side of the hopper 4. This is because when the pin member 30 for fixing the screen 10 is removed, a gap is generated between the screen 10 and the front plate 16 perpendicular to the road surface F of the hopper 4 so that the screen 10 can be easily cleaned. is there.

  As shown in FIG. 5, the fastener 26 is provided at a pin fixing member 27 joined to the vicinity of the center of both ends in the vehicle width direction of the front plate 16 perpendicular to the road surface F of the hopper 4 and the lower end portion 10 b of the screen 10. The pin insertion part 28 and the pin member 30 connected by the wire 29 as a string-like member from the lower end part 10b of the screen 10 are comprised. In a normal state such as a cleaning operation, the pin member 30 is inserted into the fixing hole 31 formed in the pin fixing member 27 and the fixing hole 32 formed in the pin insertion portion 28, and the screen 10 is inserted into the hopper 4. Secure to. Further, at the time of cleaning and maintenance in the hopper 4, the pin member 30 is removed from the pin fixing member 27 and the pin insertion portion 28 to release the fixing, and the screen 10 can be swung with respect to the hopper 4. Since the pin member 30 is connected by the wire 29 even in the removed state, it is not lost.

  Next, the operation will be described. In the cleaning vehicle 1, in a normal state, the dust removal position A is set such that the screen 10 is held substantially perpendicular to the road surface F as shown in FIG. 2. When the road surface F is cleaned in this state, the dust D is sucked into the hopper 4 by the pickup head 6 by the suction air, and heavy dust D such as an empty can falls into the hopper 4 and is sucked by the screen 10. Light and large dust D such as paper waste is removed from the air and accommodated in the hopper 4, and the dust D is accommodated in the hopper 4 as shown in FIG. 1. The suction air flow containing dust passing through the screen 10 is separated by centrifugal force by a centrifugal dust separation device (not shown) provided in the blower 3 and stored in the dust storage box 19. On the other hand, the suction air flow from which the dust is separated flows again from the blower 3 to the pickup head 6 and circulates. At this time, since the screen 10 is held substantially perpendicular to the road surface F, there is an advantage that dust does not easily adhere and does not collect easily. In particular, as shown in FIG. 2, both the dust side surface (surface facing the inner side of the hopper) 10 d and the suction side surface 10 c of the screen 10 are arranged substantially vertically, so that it is difficult for the dust to adhere to both surfaces of the screen 10. ing. For this reason, the cleaning interval of the screen 10 becomes longer and the maintainability is improved, and the problem that the screen 10 is deformed due to the accumulation of a large amount of dust as in the conventional case does not occur.

  Due to the cleaning operation of the road surface F, dust adheres to the screen 10 and clogging occurs. When this clogging is eliminated, the tail door 18 is opened with an opening / closing cylinder (not shown), and the operator first cleans the screen 10 from the dust side surface 10d of the screen 10 at the dust removal position A. Since the screen 10 is held substantially perpendicular to the road surface F at the dust removal position A, the operator faces the screen 10 without moving the screen 10 and can easily perform a cleaning operation. Further, even if the operator performs a cleaning operation in the hopper 4, the dust and dirty water remaining on the screen 10 do not hang down on the operator. When the screen 10 is cleaned, since the screen 10 is substantially perpendicular to the road surface F, the screen 10 is not driven, so that a conventional driving device or the like is not required and the structure is simplified. If the clogging cannot be resolved even by cleaning the screen 10, the operator dumps the hopper 4 to a predetermined position with a dump cylinder (not shown) and cleans the suction side surface (surface facing the hopper outside) 10c of the screen 10. . At that time, by removing the pin member 30 of the fastener 26 in advance, the screen 10 is released from the fixed state and can swing in the front-rear direction of the hopper 4, and the road surface F always remains even when the hopper 4 is dumped. The suction side surface 10c of the screen 10 can be easily cleaned. The cleaning and maintenance work in the hopper 4 is performed by removing the pin member 30 of the fastener 26 in advance, but a cylinder, a stopper, etc. are provided on the fastener 26 so that the screen 10 is in a predetermined position even if the hopper 4 is dumped. You may control so that it may not rock over.

It is a side view of the cleaning vehicle of the present invention. It is explanatory drawing of the side surface which shows the hopper of a cleaning vehicle. FIG. 3 is a view as viewed from III in FIG. 2. It is explanatory drawing which dumped the hopper of FIG. It is explanatory drawing of a fastener and a pin insertion part.

Explanation of symbols

1 Cleaning Truck 3 Blower 4 Hopper 6 Pickup Head (Dust Collection Device)
10 Screen 20 Opening 25 Connection Member 26 Fastening F Road Surface

Claims (1)

A blower connected to the hopper sucks the air in the hopper, and the suctioned air collects dust on the road surface through the dust collecting device, and a screen is provided in the hopper to remove the dust contained in the sucked air. In the cleaning vehicle, an opening for sucking air in the hopper is formed in the front plate perpendicular to the road surface forming the hopper, and the upper end is screwed to the plate member adjacent to the upper side of the front plate by a connecting member. A fastener for fixing the lower end of the screen is provided on the lower side of the front plate, and when cleaning the road surface, the lower end of the screen is fixed by the fastener so that the screen rises as the screen moves away from the opening. When cleaning the screen, the hopper is dumped to a predetermined position and the screen with the fasteners released is suspended from the road surface. Sweeper, characterized in that it has to be held in the.

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