KR200187940Y1 - Street sweeping truck equipped with water recycling device - Google Patents

Abstract

The present invention relates to a road sweeper that can clean garbage, such as roads, highways, parking lots, large-scale industrial complexes, airfield runways, large playgrounds, etc., including a storage tank with a water tank, a filter and a dirt storage space, a watering nozzle, , Side brushes, cylindrical brushes, dirt suction hoses, and blowers, and sprays water from the spray nozzles to prevent dust from scattering while sucking roadbed garbage with suction hoses to be sucked into a loading box mounted on a vehicle. The road sweeper of claim 1, wherein the stacker forms a drainage hole, and the water tank is provided with an inlet hole communicating with the stacker side, and is connected to each other via a filter assembly between the drainage hole and the inlet hole.

The present invention is also characterized in that the dust collecting filter assembly is described between the air outlet and the blower of the loading box.

In addition, the present invention is characterized in that it is provided with a power distribution means such as a hydrostatic gear box such that the driving force of the engine is directly transmitted to the blower while the cleaning vehicle is stopped, and a portion of the driving force of the engine is transmitted to the hydraulic pump during driving.

Description

Street Sweeping Truck Equipped with Water Recycling Device}

The present invention can remotely clean garbage thrown away in general roads, highways, parking lots, large industrial complexes, airfield runways, and large playgrounds by remote control by levers or switches provided in the driver's seats. It is about road sweeper.

Due to the recent increase in the level of public awareness, interest in the surrounding beautification is increasing day by day, and the scattered leaves, rubbish, and sand scattered around the roads (hereinafter simply referred to as street litter) undermine the urban aesthetics. There is a need.

In addition, when the roadbed waste flows into the sewage pipes and accumulates, the sewage pipes may be blocked and the flow of sewage may be disturbed, and the air supply may cause backflow of sewage. Therefore, cleaning the roadbed waste after draining into the sewer pipe is much more expensive than cleaning on the road surface, thereby increasing economic losses.

The road cleaning is done in the early morning when the traffic volume is not high so as not to obstruct the traffic, and when it is cleaned by personnel, environmental sanitation workers are exposed to traffic accidents. Therefore, the sanitation worker boards the vehicle equipped with the cleaning equipment. More preferably.

The operation of the road sweeper is performed by a driver who rides the blower 8 and various driving devices in the sweeper driver's seat using the power of the auxiliary engine 6 as shown in FIG. The air volume of the blower 8 of the cleaning vehicle is large enough to sufficiently suck the roadbed garbage regardless of whether it is dry or wet.

When the amount of the sediment accumulated in the loading bin exceeds a predetermined level, the doors provided at the rear of the loading bin are opened and dumped to unload the internal garbage.

Most of the roadbed waste sucked into the stacking box (1) in the process of the suction of the roadbed waste into the stacking box (1) mounted on the cleaning vehicle sedimentation sedimentation, but fine dust is not sedimentary deposition. Fine dust mixed in the air can be collected by using a dust collecting dust filter, but since the dust collecting dust is generally large, it is practically difficult to mount such a dust collector on a road sweeper, and thus, the sweeper is installed on the upper part of the loading box. It is common to provide (3) and to suck air from the outside of the loading box through this filter net (3). The suction of air is made by the blower 8.

However, the filtration effect of the filter net is not so great and it releases a large amount of fine dust back into the atmosphere. The dust released into the atmosphere causes secondary environmental pollution, and even the risk of causing a traffic accident by deteriorating the clock of the surrounding vehicles. It cannot be excluded.

Therefore, the cleaning operation is performed while spraying water for the purpose of preventing dust from scattering and improving suction efficiency. However, this work by water spraying (wet cleaning work) is difficult for a long time because the capacity of the water tank (4) is limited, and when the water of the water tank (4) mounted on the cleaning vehicle is depleted, the water is returned to the base again. Had to fill in the work.

In the structure of the conventional cleaning vehicle, as shown in FIG. 5, the filtering net 3 is disposed on the ceiling surface of the vehicle loading box 1 so that the sucked roadbed waste falls into the loading bin 1, and the air passes through the filtering net 3 ), The drawer (1) and the water tank (4) were isolated from each other.

When carrying out the wet cleaning operation, the roadbed waste is sucked together with the water sprayed on the road surface from the water tank 4 in the stacking container 1, so that the water drawn together with the waste after the end of the work is mixed in the stacking box 1 as it is. While the weight of the vehicle became heavy after the work, the water tank 4 was depleted in a short time and the working time was shortened.

In addition, in the structure of the cleaning vehicle shown in Fig. 5, the filtering net 3 is disposed on the ceiling surface of the vehicle loading box 1 so that the sucked roadbed waste falls into the loading bin 1, and the air passes through the filtering net 3. It was made to be sucked by the blower 8, and the mixed air which passed through the blower 8 was to be blown out below the vehicle body. Therefore, even in this water spraying operation (wet cleaning operation), due to the insufficient filtering effect of the filter net is sucked into the stack and collected, the fine dust contained in the air discharged after being scattered is discharged to the outside.

In the case where the cleaning vehicle is only driven in the non-working state, all of the driving force of the engine of the cleaning vehicle is transmitted to the axle through the differential gear, and when the vehicle is to be driven while cleaning, the auxiliary engine 6 mounted separately is operated together. I had to. As a result, a lot of body weight, manufacturing cost, and fuel cost of the cleaning vehicle were consumed.

The object of the present invention is to solve the above problems, by filtering the water contained in the roadbed waste deposited in the loading container to be recycled back to the water tank to maximize the water storage capacity while substantially maximizing the cleaning operation time It is to provide a road sweeper that can be extended.

Another object of the present invention is to provide a cleaning vehicle having a fine dust collecting filter that can prevent fine dust from scattering.

It is still another object of the present invention to provide a cleaning vehicle having a power distribution means capable of omitting the auxiliary engine since the blower can be driven through a hydraulic pump in addition to the engine mounted on the vehicle.

Still another object of the present invention is to provide a cleaning vehicle that is simple to manufacture and that can reduce the weight of the vehicle body.

1 is a schematic view showing the structure of a road sweeper of the present invention.

Figure 2 is a perspective view showing the internal structure of the storage box loaded on the cleaning vehicle of the present invention.

3 is a system schematic diagram showing in detail the arrangement of filters of a cleaning vehicle;

4 is a perspective view of a filter;

5 is a schematic view showing the structure of a road sweeper of the prior art.

6 is a schematic diagram showing the configuration of a cleaning vehicle having a fine dust collecting filter assembly;

7A and 7B are schematic views showing a power transmission system of a hydrostatic gear box as a power distribution means that can be applied to a cleaning vehicle of the present invention, and FIG. 7A is a power transmission state during non-working driving, and FIG. 7B is a cleaning work and The figure which shows the power transmission state at the time of running, respectively.

Explanation of symbols for the main parts of the drawings>

1: loading box

2: door

3: filter net

4: water tank

5: water pump

6: auxiliary engine

7: hydraulic pump

8: blower

9: suction duct

10: suction hose

11: cylindrical brush

12: side brush

13: watering nozzle

15: filter

16: suction port

17: exhaust port

18: drainage passage

According to one aspect of the present invention for achieving the above object, according to one aspect of the present invention, a drainage hole is formed at the bottom of the loading box to mount a filter assembly in the hole, and between the water tank and the loading box, water contained in the waste deposited in the loading box is returned to the water tank. A cleaning truck provided with a drainage passage to be provided is provided.

According to another aspect of the present invention, there is provided a cleaning vehicle having a fine dust collecting filter to prevent scattering of fine dust.

According to still another aspect of the present invention, there is provided a cleaning vehicle capable of traveling at the same time as the cleaning operation with only one engine mounted on the vehicle by omitting the auxiliary engine by mounting the hydrostatic gear.

1 shows a relationship between a loading box 1 and a water tank 4 mounted on a road sweeper according to the present invention. Reference numeral 2 is a door that can be opened and closed at the rear of the loading box (1) to dump garbage inside, 3 is a filtering network, 5 is a water pump, 6 is an auxiliary engine, 7 is a hydraulic pump, 8 is a blower, 9 is Suction ducts, 10 for suction hoses, 11 for cylindrical brushes, 12 for side brushes, 13 for sprinkling nozzles, 14 for vents, 15 for filters, 16 for intake vents, 17 for exhaust vents, 18 for drain passages, 19 for It is a drainage hole. Referring to this figure, it can be seen that the drain passage 18 is provided between the lower part of the loading box 1 and the water tank 4.

The suction duct 9 is supported by a supporting roller 9a mounted on the rear surface of the duct 9 with a slight rise from the ground. The water pressurized by the water pump 5 and water sprayed from the water spray nozzle 13 prevents scattering of dust while wetting the road surface and roadbed waste together, and moves the cylindrical brush 11 and the side brush 12 as the vehicle proceeds. The coarse wet roadbed waste is sucked through the suction duct 9 and inserted into the loading bin through the inlet 16.

The structure of the stack 1 is shown in detail in FIG. The drainage hole is formed in the bottom face of the storage box 1 at the rear side of a vehicle, and the filter mounting part is provided in this drainage hole. The filter assembly 15 is mounted in this filter mounting part. An inlet hole 41 communicating with the compartment 1 side is provided at a rear upper side of the water tank 4 disposed below the compartment 1, and the filter assembly 15 and the inlet 41 of the water tank are provided. The drainage passage 18 which connects these is provided in between.

The filter assembly 15 is detachable for maintenance and cleaning after use. For this purpose, the filter assembly 15 is arrange | positioned at the back side of the bottom face of the loading box 1, and is slidably removable.

Of course, it is also possible to form the drainage hole of the stack 1 at the bottom center and to place the filter assembly 15 therein, but to facilitate access from the outside of the cleaning vehicle for maintenance or cleaning, the filter assembly 15 may be It is more preferable to arrange | position it at the back side of a loading chest bottom.

The bottom surface of the loading container 1 is inclined downwardly toward the drainage hole with the inclined surface portion 23 formed therein. Even though dirt accumulates on the entire bottom surface of the loading container, the water contained in the waste water passes through the inclined surface portion 23 to the water tank 4. It's going to get back inside.

3 is a system configuration diagram showing in detail the arrangement of the filter assembly 15 of the cleaning vehicle. The filter is removably attached to the filter mounting groove 19 formed integrally with a separate member or wall on both inner walls of the filter mounting portion formed below the bottom of the loading box 1. In order to mount the plurality of filters 20, a plurality of mounting grooves 19 may be formed, and the number of filters 20 to be mounted is appropriately determined in consideration of the space between the top of the water tank and the loading box.

The configuration of the filter 20 is shown in detail in perspective view in FIG.

The filter 20 is a stainless steel mesh network widely used as a highly corrosive material 22, for example, a textile industry filter having a long service life, surrounded by a frame 21 that can be mounted in the mounting groove 19. 32), the filtration performance of this filter is good to filter out 0.479 mm particles, for example.

Referring to the operation of the road sweeper, as shown in FIG. 1, the blower 8, the hydraulic pump 7 and the water pump 5 are first driven by the auxiliary engine 6. While rotating the side brush 12 and the roller brush 11, water is sprayed from the water tank 4 through the water pump 5 through the water spray nozzle 13, and the submerged waste and water soaked together in the suction duct. Inhalation is made to return to the stacking box (1) with a specific gravity increased. The diameter of the watering nozzle 13 is usually about 1 mm. The sprinkling nozzles 13 are normally provided with two in the side brush 12, six in the cylindrical brush 11, and two in the suction duct 9.

Water sprayed on the road surface from the nozzle 13 wets dust and roadbed waste, thereby preventing dust from scattering, while the side brush 12 and the cylindrical brush 11 receive the dust and roadbed wetted with water. 9) inhalation. In this process, most of the water sprayed from the spray nozzles is sucked except for the amount absorbed on the road surface or a very small amount flowing along the road surface. Thus, the submerged wet waste is deposited in the stack 1 and the water leaching out of the deposit passes through the filter assembly 15 installed at the bottom of the stack and returns to the water tank 4 via the drain passage 18 to be reused. It becomes possible. The air is discharged to the outside via a filter net (3) near the upper center of the loading box.

Figure 6 is a schematic diagram showing the structure of a cleaning vehicle equipped with a fine dust collecting filter assembly 25 in the cleaning vehicle of the present invention. The fine dust collecting filter assembly 25 is composed of a plurality of side-by-side fine dust filters 26 and is connected between the air outlet 27 of the loading box 1 and the inlet of the blower 8.

As a kind of fine dust collection filter, it is suitable to use a stainless steel mesh, for example. The size of the mesh of the filter should be controlled to less than 25μ (0.0025mm) emission dust according to the air pollution prevention standard, it is appropriate to use the # 550 standard to satisfy this. Since the air dust in the road sweeper contains moisture, it cannot be solved with a general nonwoven fabric, and a stainless steel mesh resistant to moisture should be selected. Since the stainless steel mesh of the # 550 standard has a smaller particle size than the environmental standard, no secondary environmental pollution by dust occurs.

The fine dust collecting filter assembly 25 filters the fine dust contained in the dust from the stacker, which needs to be cleaned periodically or intermittently. The dust collecting tray 28 is mounted below the filter assembly 25. When the vibrator 32 is attached to the fine dust filter assembly 25 so that the filter cleaning process may be automatically performed, each filter 26 may be periodically or intermittently vibrated so that the attached dust drops downward. The collected dust may be collected in the dust collecting tray 28 and then taken out.

7a and 7b schematically show a hydrostatic gear box 40 used in the cleaning vehicle of the present invention. FIG. 7A schematically illustrates a driving force transmission system in which all driving force of the engine is transmitted to the differential gear via the propulsion shaft during non-working driving, and FIG. 7B illustrates a driving force transmission system when driving the cleaning vehicle while performing a cleaning operation. As a result, a part of the driving force of the engine is transmitted to the blower via the hydraulic pump. The hydrostatic gear box 40 is a device that functions to divide one power into two powers, and is mounted on a drive axle and distributes at least a portion of the power of the engine to blow the hydraulic pump. It can be used to drive. 7A and 7B, reference numeral 41 is a blower pump, 42 is a drive pump, and 43 is a drive motor. In FIG. 7A, the gears 46 driving the blower pump 41, the drive pump 42, and the gears 47 driving the drive motor 43 are not engaged with the gears 44, 45 of the propulsion shaft 48. . A clutch (not shown) is disposed between the gears 44 and 45 so as to be drive connected. This state is at the time of non-working driving, and the driving force of the propulsion shaft is transmitted directly to the differential device via the gear 44, the clutch, and the gear 45 without driving the blower pump 41 or the drive pump 42. In FIG. 7B, the gear 46 driving the blower pump 41 and the drive pump 42 and the gear 44 of the propulsion shaft 48 mesh with each other, and the gear 47 driving the drive motor 43 is the propulsion shaft 48. While engaged with the gear 45 of the), the clutch between the gears (44, 45) is released. The driving force of the propulsion shaft 48 thereby drives the blower pump 41 and the drive pump 42 together through the meshed gear 44 and the gear 46, and then drives the drive motor 43 and the gear 47 attached thereto. It is transmitted to the differential device via the gear 45 of the propulsion shaft.

In the conventional cleaning vehicle, the power transmission to the axle of the engine must be stopped and the driving power of the engine must be driven by the blower pump and the drive pump, or the engine must be stopped and the auxiliary engine installed separately from the engine must be operated. The use of the hydrostatic gear box allows the blower to be driven by transmitting a part of the power to the hydraulic pump without interrupting or stopping the transmission of the engine driving force to the axle during driving, thereby enabling the device to be operated more efficiently.

In addition, since the auxiliary engine for driving the hydraulic pump can be omitted, the vehicle occupies less space and the size of the loading box can be secured accordingly. In addition, even if the existing storage box is used as it is without expanding the size of the storage box, it does not require an auxiliary engine, thereby reducing the weight of the vehicle body, and reducing the manufacturing cost and fuel cost. In addition, when traveling while cleaning, high-speed traveling is not necessary, so even if a part of the driving force of the vehicle body is distributed to the blower, the engine is not overwhelmed.

As described above, in the cleaning vehicle of the present invention, the bottom surface of the loading box 1 mounted thereon is communicated with the water tank, and a filtration member for filtering water is disposed at the communicating portion, so that the garbage is deposited in the loading box by the garbage suction operation. Since the water mixed in the water is returned to the water tank through the filtration member, the water storage capacity of the water tank is extremely improved, and the weight of the waste is also reduced since all of the water accumulated in the stacking box 1 is returned to the water tank 4. The weight of the sweeper can be reduced and fuel can be saved.

In the embodiment shown in the drawing, the connection between the stacker 1 and the water tank is formed with a drainage passage 18 at the bottom of the stacker 1 and an inlet hole communicating with the stacker 1 side at the top of the water tank 4. By forming the holes 41 and connecting these holes 16 and 41 to each other, this is merely an example for better understanding, for example, by a hose connection or by omitting a drainage passage and Of course it is also possible to connect 15) directly to the water tank.

In addition, although not shown in detail in the drawings, the bottom surface other than the inclination surface formed on the bottom surface of the loading box 1, except for the portion in which the filter assembly 15 is disposed is also inclined downward from the front to the rear to further increase the drainage effect is better. .

In addition, when the fine dust collector filter assembly according to the present invention is provided, fine dust contained in the air discharged from the stacker can be prevented from scattering and leading to secondary pollution.

In addition, it is possible to distribute a part of the driving force to the blower drive without changing the power of the engine mounted on the vehicle to switch to the blower drive or to perform the cumbersome work of stopping the engine and starting the auxiliary engine. It is to provide a cleaning vehicle that can reduce manufacturing costs, body weight and fuel costs according to the engine installation.

Claims (10)

With a water tank (4), A storage box 1 disposed above the water tank 4 and having a suction port 16, an exhaust port 17, a filter 3 provided at the exhaust port 17, and a waste storage space; A watering nozzle 13 connected to the water tank 4 for sprinkling water supplied from the water tank 4 on the road surface; Brushes 11 and 12 which are installed in close proximity to the road surface and are spaced in contact with the road surface, A dirt suction hose (10) for sucking dirt from a position adjacent to the brushes (11, 12) and transporting it to the loading bin through the suction port (16); And a blower (8) for drawing suction force to the suction hose (10) through the exhaust port (17) and the loading box (1), In the road cleaning vehicle in the form of injecting water from the water spray nozzle 13 to prevent dust scattering while sucking the roadbed waste into the suction box (10) mounted on the vehicle, The storage box 1 is provided with a drainage hole 19, and the water tank 4 is provided with an inlet hole 41 communicating with the side of the storage box, with a filter assembly 15 interposed between the drainage hole and the inlet hole. A road sweeper characterized by communicating with each other. The filter filter according to claim 1, wherein the filter (20) is installed in a filter mounting portion attached to a drain hole formed in the bottom surface of the loading box (1), and the drain passage (18) is provided between the filter mounting portion (15) and the water tank (4). Road sweeper characterized in that provided. The road sweeper according to claim 1 or 2, characterized in that the bottom surface of the loading box (1) is inclined downward toward the drainage hole. 3. A road sweeper according to any one of the preceding claims, characterized in that it is communicated with each other via a fine dust collecting filter assembly (15) between an air outlet (21) and a blower (8) of the loading box (10a). 5. The dust collecting filter assembly (25) according to claim 4, wherein the fine dust collecting filter assembly (25) has a plurality of filters (26) arranged next to each other, and the dust is attached to the filter by vibrating the filter (26) periodically or intermittently. A road sweeper comprising: a vibrator 32 that can be pulled out and a detachable dust collecting tray 28 for storing fallen dust. 3. A road sweeper as claimed in claim 1 or 2, comprising power distribution means for transmitting at least a part of the driving force of the engine to the blower (8) via a hydraulic pump (7). 7. A road sweeper as claimed in claim 6, wherein said power distribution means comprises a hydrostatic gear box (40). 7. A road sweeper according to claim 6, wherein the air outlet (21) of the stacking box (10a) and the blower (8) communicate with each other via a fine dust collecting filter assembly (25). 9. The dust collecting filter assembly (25) according to claim 8, wherein the fine dust collecting filter assembly (25) has a plurality of filters (26) arranged next to each other and vibrates the filter (26) periodically or intermittently to drop dust attached to the filter. A road sweeper comprising: a vibrator 32 that can be pulled out and a detachable dust collecting tray 28 for storing fallen dust. 10. The road sweeper according to claim 9, wherein the air outlet (34) of the blower (8) is oriented upward of the stacking box (10a).