Automatic cleaning device for drain pipe and filter screen cover of washing and sweeping vehicle

Abstract

The application relates to an automatic cleaning device for a sewage pipe and a filter screen cover of a washing and sweeping vehicle and belongs to the technical field of cleaning operations. The automatic cleaning device comprises a support arranged on the inner wall of a rear door and located above the filter screen cover, the support extending forward from the inner wall of the rear door; a first supporting lug is arranged on the upper surface of the support close to the inner wall of the rear door, and the first supporting lug is hinged with a push rod; a second supporting lug is arranged at the extending end of the support, and the second supporting lug is hinged with a swing rod; one end of the swing rod is hinged with the push rod, and the other end of the swing rod is connected with a water pipe; a water inlet hole and a plurality of water outlet holes are arranged on the water pipe, and a nozzle is arranged on the water outlet hole; the cleaning device adopts a structure that the push rod pushes the swing rod to rotate around the second supporting lug on the support to drive the water pipe to rotate, two states of an idle state and a working state are formed, when the working state, the cleaning of the sewage pipe and the filter screen cover can be automatically realized, when the idle state, the device can be withdrawn, and the whole process does not need manual operation and is more simple, convenient and reliable.

Description

Technical Field

[0001] This invention relates to an automatic cleaning device for the sewage pipe and filter screen of a sweeper truck, belonging to the field of cleaning operation technology. Background Technology

[0002] A sweeper truck is a sanitation vehicle used for road sweeping and washing. It has a drain pipe at the rear door of the garbage bin, connected to a butterfly valve. Before unloading, the valve is opened to discharge some wastewater, preventing water from impacting the ground and reducing splashing during unloading. After sweeping and unloading, silt or other impurities accumulate on the drain pipe and filter screen, requiring timely cleaning to remove blockages and ensure smooth unloading and drainage. Currently, cleaning the drain pipe and filter screen requires the operator to hold a water gun. Because the rear door is open during cleaning, the operator must bend over and stand sideways to clean the drain pipe and filter screen, resulting in low efficiency. Furthermore, the close proximity causes the high-pressure water to splash back onto the operator, causing discomfort. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to make the cleaning of the sewage pipe and filter screen of the sweeper more efficient.

[0004] To solve the above-mentioned technical problems, the technical solution proposed by the present invention is: an automatic cleaning device for the sewage pipe and filter screen of a sweeper truck. The sewage pipe is installed below the rear door of the garbage bin of the sweeper truck, and the filter screen is installed on the inner wall of the rear door of the garbage bin of the sweeper truck and located at the inlet of the sewage pipe. The filter screen has an opening. The automatic cleaning device includes a bracket disposed on the inner wall of the rear door and located above the filter screen. The bracket is located above the full alarm line inside the garbage bin and extends forward from the inner wall of the rear door. A first lug is provided on the bracket near the inner wall of the rear door, and a push rod is hinged to the first lug. A second lug is provided at one of the extended ends of the bracket, and a swing rod is hinged to the second lug. The swing rod is divided into two sections by the point where it is hinged to the second lug, one section being a curved section and the other section being a straight section. The end of the curved section is hinged to the end of the push rod, and the straight section is connected to a water pipe. The water pipe has a water inlet hole. A water inlet is connected to a water inlet pipe, which has a first water outlet and a first nozzle installed thereon. Two opposing branch water pipes extend from the water inlet pipe, with a second and a third water outlet respectively at their extended ends. A second and a third nozzle are installed at the second and third water outlets, respectively. One end of the water inlet pipe is connected to the straight section, and the other end has a fourth water outlet with a fourth nozzle installed thereon. The automatic cleaning device has two states: idle and working. In the idle state, the swing arm and the water inlet pipe are both located on the full garbage bin alarm line. In the working state, the swing arm is angled downwards towards the inner wall of the rear door, and the high-pressure water sprayed by the first, second, and third nozzles covers the entire filter screen. The fourth nozzle is inserted into the filter screen through the opening, and the central axis of the fourth nozzle is aligned with the central axis of the drain pipe.

[0005] A further improvement to the above technical solution is that: the bottom surface of the bracket is provided with a threaded hole plate vertically downward, and a bolt is passed through the threaded hole plate; the straight segment extends toward the threaded hole plate with a limiting protrusion and the limiting protrusion has a vertical plane; when the automatic cleaning device is in working condition, the vertical plane is in contact with the head of the bolt.

[0006] A further improvement to the above technical solution is that: a threaded perforated plate is vertically provided on the top of the filter screen; a bolt is passed through the threaded perforated plate; the ends of the two branch water pipes are connected to a limiting pipe, and a limiting block is provided on the limiting pipe; when the automatic cleaning device is in working condition, the limiting block is in contact with the head of the bolt.

[0007] A further improvement to the above technical solution is that the swing rod is a single irregular plate, the irregular plate is provided with a first hinge hole and is hinged to the end of the push rod, and the irregular plate is also provided with a second hinge hole and is hinged to a second support lug.

[0008] A further improvement to the above technical solution is that: the swing rod consists of two irregularly shaped plates, and a connecting sleeve is connected between the two irregularly shaped plates. The two ends of the connecting sleeve are respectively aligned with two first hinge holes on the two irregularly shaped plates; both irregularly shaped plates have protrusions extending towards the same side, and a limiting plate is connected between the protrusions of the two irregularly shaped plates.

[0009] A further improvement to the above technical solution is that: the water pipe includes three sections, namely an upper bend section, a middle section, and a lower bend section, wherein the upper bend section and the lower bend section are two bend sections with opposite bending directions on both sides of the middle section; the upper bend section is connected to the straight section; the water inlet is opened on the upper bend section; the first water outlet is opened on the middle section; the two branch water pipes extend from the middle section; and the fourth water outlet is opened at the bottom of the lower bend section.

[0010] This invention provides an automatic cleaning device for the sewage pipe and filter screen of a sweeper truck, which has the following advantages: 1. This cleaning device uses a push rod to drive a swing rod to rotate around the second lug on the bracket, thereby rotating the water pipe. This creates two states: an idle state and a working state. When switching from the idle state to the working state, the sewage pipe and filter screen are automatically cleaned. When switching back from the working state to the idle state, the device is retracted. The entire process is manual and more convenient and reliable. 2. By adjusting the length of the bolt to limit the rotation of the swing rod or water pipe, the device ensures accurate positioning of the sewage pipe and filter screen while limiting the rotation position of the water pipe when switching to the working state. 3. Because the automatic cleaning device uses multiple nozzles connected to the water pipe, the high-pressure water sprayed can cover the filter screen and sewage pipe, improving the quality and speed of cleaning. Attached Figure Description

[0011] The following description, in conjunction with the accompanying drawings, further illustrates an automatic cleaning device for the sewage pipe and filter screen of a sweeper truck according to the present invention.

[0012] Figure 1 This is a schematic diagram of the automatic cleaning device in operation in Embodiment 1.

[0013] Figure 2 for Figure 1 The left view.

[0014] Figure 3 This is a front view of the swing rod structure in Embodiment 1.

[0015] Figure 4 for Figure 3Left sectional view.

[0016] Figure 5 for Figure 3 A top-view partial sectional view.

[0017] Figure 6 This is a schematic diagram of the automatic cleaning device in the idle state in Embodiment 1.

[0018] Figure 7 This is a schematic diagram showing the state after sewage discharge is completed in Example 1.

[0019] Figure 8 This is a schematic diagram of the automatic cleaning device in operation in Example 2.

[0020] Figure 9 for Figure 8 A top-view partial sectional view.

[0021] Figure 10 This is a front view of the swing arm in Embodiment 2.

[0022] Figure 11 This is a diagram showing the connection between the swing rod, the second lug, and the push rod in Embodiment 3. Detailed Implementation

[0023] Example 1

[0024] The following description, in conjunction with the accompanying drawings and specific preferred embodiments, provides a more detailed explanation of an automatic cleaning device for the sewage pipe and filter screen of a sweeper truck according to the present invention.

[0025] An automatic cleaning device for the sewage pipe and filter screen of a sweeper truck, such as... Figure 1 , 2 As shown, the sewage pipe is installed below the rear door of the sweeper truck's garbage bin, and the filter screen 11 is installed on the inner wall of the rear door of the sweeper truck and located at the inlet of the sewage pipe. The filter screen 11 has an opening. The automatic cleaning device includes a bracket 6 located on the inner wall of the rear door and above the filter screen 11, extending forward from the inner wall of the rear door. A first lug 7 is provided on the upper part of the bracket 6 near the inner wall of the rear door, and a push rod 8 is hinged to the first lug 7. A threaded hole plate 10 is provided vertically downward on the bottom surface of the bracket 6, and a bolt 12 passes through the threaded hole plate 10. A second lug 9 is provided on one of the extended ends of the bracket 6, and a swing rod 5 is hinged to the second lug 9. The swing rod 5 is divided into two sections at the hinge point with the second lug 9. One section of the swing rod 5 is a curved section, and the end of the curved section is hinged to the end of the push rod 8. The other section of the swing rod 5 is a straight section, and a limiting protrusion extends toward the threaded hole plate 10. The limiting protrusion has a vertical plane.

[0026] The structure of the swing arm 5 is as follows Figure 3 , 4As shown in Figure 5, the swing rod 5 is composed of two irregularly shaped plates 51. Each of the two irregularly shaped plates 51 has two symmetrical first hinge holes 511 that are hinged to the end of the push rod 8. Each of the two irregularly shaped plates 51 also has two symmetrical second hinge holes 512 that are hinged to the second lug 9. A connecting sleeve 52 connects the two irregularly shaped plates 51, with both ends aligned with the two first hinge holes 512 on the two irregularly shaped plates 51. Both irregularly shaped plates 51 have protrusions 513 extending towards the same side. A limiting plate 53 connects the protrusions 513 on the two irregularly shaped plates 51. The protrusions 513 on the two irregularly shaped plates 51 and the limiting plate 53 between the two protrusions 513 constitute the limiting protrusions on the swing rod 5. The limiting plate 53 is the vertical plane of the limiting protrusions.

[0027] like Figure 1 , 2 As shown in Figure 6, a water pipe 1 is welded into the straight section of the swing rod 5. The water pipe 1 is divided into three sections: an upper bend, a middle section, and a lower bend. The middle section of the water pipe 1 is a straight section, and the upper and lower bends are two bends with opposite bending directions on either side of the middle section. The upper bend of the water pipe 1 is inserted into the straight section of the swing rod 5 and welded to two irregularly shaped plates 51. A water inlet hole is provided on the upper bend of the water pipe 1 and connected to a water inlet pipe 4. A first water outlet hole is opened in the middle section of the water pipe 1, and a first nozzle 21 is installed on the first water outlet hole. Two opposing branch water pipes extend from the middle section of the water pipe 1. A second water outlet hole and a third water outlet hole are respectively opened on the extended ends of the two branch water pipes, and a second nozzle 22 and a third nozzle 23 are respectively installed on the second and third water outlet holes. A fourth water outlet hole is opened at the bottom of the lower bend of the water pipe 1, and a fourth nozzle 3 is installed on the fourth water outlet hole.

[0028] The automatic cleaning device for the sewage pipe and filter screen is in the idle state inside the sweeper truck as follows: Figure 6 As shown, at this time, the automatic cleaning device for the sewage pipe and filter screen is positioned above the full alarm line, ensuring that the cleaning device will not be soaked in sewage, causing nozzle blockage. After opening the rear door of the sweeper truck and emptying the garbage and sewage inside, as shown... Figure 7 As shown, at this time, the push rod end of the push rod 8 extends, pushing the swing rod 5 to rotate around the second lug 9, thereby driving the water pipe 1 to move. When the push rod end of the push rod 8 extends to a certain set stroke, the limit plate 53 on the swing rod 5 and the head of the bolt 12 on the threaded hole plate 10 are also in contact, and the automatic sewage pipe cleaning device reaches the working state. Figure 1As shown, at this time, the swing rod 5 is tilted downwards towards the inner wall of the rear door of the sweeper truck. The high-pressure water sprayed by the first nozzle 21, the second nozzle 22, and the third nozzle 23 can cover the entire filter screen 11. At the same time, the fourth nozzle 3 of the water pipe 1 is inserted into the filter screen 11 through the opening on the filter screen 11, and the central axis of the fourth nozzle 3 should be aligned with the central axis of the sewage pipe. If the push rod end of the push rod 8 extends to a certain set stroke, and the limiting plate 53 on the swing rod 5 is not in contact with the head of the bolt 12 on the threaded hole plate 10; or if the push rod end of the push rod 8 extends but does not reach a certain set stroke, and the limiting plate 53 on the swing rod 5 is in contact with the head of the bolt 12 on the threaded hole plate 10, it indicates that the automatic cleaning device is not in the required working state. At this time, the length of the bolt 12 on the threaded hole plate 10 can be adjusted to make the automatic cleaning device reach the required working state. When the automatic cleaning device enters the working state, the water inlet pipe 4 is connected to high-pressure water. The first nozzle 21, the second nozzle 22 and the third nozzle 23 spray high-pressure water to cover and clean the filter screen cover, and the fourth nozzle 3 sprays high-pressure water into the drain pipe to clean the drain pipe.

[0029] After cleaning is complete, the garbage bin of the sweeper truck lowers, the rear door closes, and the water inlet pipe 4 stops supplying high-pressure water. Then, the push rod 8 retracts, causing the water pipe 1 to retract. The entire automatic sewage pipe cleaning device is now above the full alarm line and in an idle state. To prevent the operator from forgetting to retract the water pipe 1, the circuit system will sense the signal that the garbage bin has fallen into place and the rear door is closed, thereby controlling the water inlet pipe 4 to stop outputting high-pressure water and controlling the push rod 8 to automatically retract, causing the water pipe 1 to retract.

[0030] Example 2

[0031] This embodiment is a variation of Embodiment 1, such as... Figure 8 , 9 As shown, specifically, the limiting protrusions of the swing rod 5 in Embodiment 1 (i.e., the protrusions 513 of the two irregular plates 51 and the limiting plate 53 between the two protrusions 513) are removed, and the threaded hole plate 10 below the bracket 6 and the bolts 12 passing through the threaded hole plate 10 are moved to the filter screen cover 11. At the same time, a limiting tube 13 and a limiting block 131 set on the limiting tube 13 are added.

[0032] The modified structure of the swing arm 5 is as follows: Figure 10 As shown, and in Example 1 Figure 3 , 4 Compared with the structure of the swing rod 5 shown in Figure 5, the swing rod 5 in this embodiment lacks the limiting protrusion (i.e., the protrusion 513 of the two irregular plates 51 and the limiting plate 53 between the two protrusions 513).

[0033] The structure of the added limiting tube 13 and limiting block 131 is as follows: Figure 9As shown, the limiting tube 13 is a square tube, and the limiting block 131 is installed at the center of one of the four outer walls of the limiting tube 13.

[0034] The installation position of limit tube 13 is as follows Figure 8 , 9 As shown, the outer wall surface of the limiting tube 13, which is opposite to the limiting block 131, is connected to the extended ends of the two branch water pipes on the water pipe 1.

[0035] In this embodiment, the automatic cleaning device is in the same idle state inside the sweeper as in Embodiment 1, located above the full tank alarm line. Figure 8 As shown, in this embodiment, when the limiting block 131 on the limiting tube 13 is in contact with the head of the bolt 12 on the threaded hole plate 10, the automatic cleaning device reaches the working state, and the cleaning process in the working state is the same as in Embodiment 1.

[0036] Example 3

[0037] This embodiment is a variation of Embodiment 2. Specifically, one of the two irregularly shaped plates 51 of the swing rod 5 in Embodiment 2 is removed, resulting in a single irregularly shaped plate 51. Figure 11 As shown, except for removing one of the two irregularly shaped plates 51 of the swing rod 5, the other structures of the automatic cleaning device in this embodiment are the same as those in Embodiment 2. The usage process of the automatic cleaning device in this embodiment is the same as that in Embodiment 2.

Claims

1. A kind of automatic cleaning device of drain pipe and filter screen cover of washing and sweeping car, drain pipe is installed in the rear door of garbage bin of washing and sweeping car below, filter screen cover is installed on the rear door inner wall of garbage bin of washing and sweeping car and located at the entrance of drain pipe, there is opening on the filter screen cover, it is characterized by: The automatic cleaning device includes a bracket disposed on the inner wall of the rear door and above the filter screen, the bracket being positioned above the full alarm line inside the trash can, and extending forward from the inner wall of the rear door; the bottom surface of the bracket has a threaded plate with bolts passing through it; a first lug is provided on the upper part of the bracket near the inner wall of the rear door, the first lug being hinged to a push rod; a second lug is provided at one of the extended ends of the bracket, the second lug being hinged to a swing rod; the swing rod is composed of two irregularly shaped plates, the two plates... Each of the two irregularly shaped plates has a symmetrical first hinge hole that is hinged to the end of the push rod. Each of the two irregularly shaped plates also has a symmetrical second hinge hole that is hinged to the second lug. A connecting sleeve connects the two irregularly shaped plates, with both ends of the connecting sleeve aligned with the two first hinge holes on the two irregularly shaped plates. Both irregularly shaped plates have protrusions extending towards the same side. A limiting plate connects between the protrusions of the two irregularly shaped plates. The protrusions on the two irregularly shaped plates and the limiting plate between the protrusions constitute a limiting protrusion on the swing rod. The positioning plate is the vertical plane of the limiting protrusion; the swing rod is divided into two sections by its hinge point with the second support lug, one section being a curved section and the other a straight section; the end of the curved section is hinged to the end of the push rod, and the straight section is connected to a water pipe, the water pipe comprising three sections in sequence: an upper curved section, a middle section, and a lower curved section, the upper curved section and the lower curved section being two curved sections with opposite bending directions on both sides of the middle section; the upper curved section is connected to the straight section; the upper curved section of the water pipe is provided with a water inlet hole and the water inlet hole is connected to a water inlet pipe, the... The middle section of the water pipe is provided with a first water outlet and a first nozzle is installed on the first water outlet; two opposing branch water pipes extend from the middle section of the water pipe, and the extended ends of the two branch water pipes are respectively provided with a second water outlet and a third water outlet, and the second water outlet and the third water outlet are respectively provided with a second nozzle and a third nozzle; one end of the water pipe is connected to the straight section, and the other end of the water pipe is provided with a fourth water outlet and a fourth nozzle is installed on the fourth water outlet, and the fourth water outlet is located at the bottom end of the downward bend section; The automatic cleaning device has two states: idle and working. When in the idle state, the swing rod and the water pipe are both located on the full alarm line of the garbage bin. When in the working state, the swing rod is angled downward toward the inner wall of the rear door, and the vertical plane of the limiting protrusion on the swing rod is in contact with the bolt, so that the high-pressure water sprayed by the first nozzle, the second nozzle and the third nozzle covers the entire filter screen. At this time, the fourth nozzle is inserted into the filter screen through the opening and the central axis of the fourth nozzle is aligned with the central axis of the sewage pipe.

Images