Suction nozzle structure of a washing and sweeping vehicle and washing and sweeping vehicle

Abstract

The present disclosure relates to a suction nozzle structure of a sweeping and washing vehicle and the sweeping and washing vehicle, the suction nozzle structure comprising: a first suction pipe; a first suction nozzle arranged at an air suction end of the first suction pipe and provided with a first opening at a bottom thereof; a second suction pipe; a second suction nozzle arranged at an air suction end of the second suction pipe and provided with a second opening at a bottom thereof; the second suction nozzle is arranged at a front side in a traveling direction of the first suction nozzle, the second opening has an area smaller than that of the first opening, and the second suction nozzle is provided with a feeding port extending to the second opening at the front side in the traveling direction. In the present disclosure, the suction area of the second suction nozzle is small, and even if the feeding port is arranged at the front side of the second suction nozzle, the negative pressure is sufficient for suction. Therefore, by arranging the second suction nozzle at the front side in the traveling direction of the first suction nozzle, the soft objects such as fallen leaves that are difficult to be sucked by the first suction nozzle can be sucked through the feeding port, and the fallen leaves can be prevented from piling up.

Description

Technical Field

[0001] This disclosure relates to the field of sweeper truck technology, specifically to a suction nozzle structure for a sweeper truck and the sweeper truck itself. Background Technology

[0002] The vacuum nozzle of the sweeper truck is effective at picking up dust and gravel particles on the ground, but it has problems picking up softer objects such as fallen leaves. This is because the nozzle has a small clearance from the ground, and as the vehicle moves forward, leaves accumulate in front of the nozzle and cannot get in. Utility Model Content

[0003] The purpose of this disclosure is to provide a suction nozzle structure for a sweeper truck and a sweeper truck that can solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this disclosure provides a suction nozzle structure for a sweeper truck, comprising: a first suction pipe; a first suction nozzle disposed at the suction end of the first suction pipe and having a first opening at the bottom of the first suction nozzle; a second suction pipe; a second suction nozzle disposed at the suction end of the second suction pipe and having a second opening at the bottom of the second suction nozzle; the second suction nozzle being disposed in front of the first suction nozzle in the direction of travel, the area of ​​the second opening being smaller than the area of ​​the first opening, and the second suction nozzle having a feed inlet extending to the second opening in the front of the direction of travel.

[0005] Optionally, baffles extending outward along the travel direction are provided on both sides of the feed inlet, and the distance between the two baffles gradually increases along the extension direction.

[0006] Optionally, the inner height of the second suction nozzle is higher than the inner height of the first suction nozzle.

[0007] Optionally, the first suction nozzle extends horizontally in a direction perpendicular to the direction of travel, and multiple first straws are spaced apart along the extension direction of the first suction nozzle. The suction nozzle structure also includes a guide plate disposed in front of the first suction nozzle in the direction of travel. The guide plate is located between two adjacent first straws. There are two guide plates, one end of which is connected and the other end extends toward the first suction nozzle and is inclined toward the direction away from each other.

[0008] Optionally, there are multiple second suction nozzles, the number of which is the same as the number of first straws, and the second suction nozzles correspond one-to-one with the first straws along the direction of travel.

[0009] Optionally, each of the second nozzles is individually connected to a second straw, the other end of which is connected to a corresponding first straw.

[0010] Optionally, the nozzle structure further includes an airflow regulating valve, and each of the second suction tubes is equipped with the airflow regulating valve.

[0011] Optionally, the second straw includes a fixed section and a detachable section. The fixed section is fixedly connected to the first straw, one end of the detachable section is detachably connected to the fixed section, and the other end is connected to the second nozzle. The airflow regulating valve is disposed on the fixed section.

[0012] Optionally, the suction end of the second straw is provided with a wind hood, and the wind hood is provided with a cavity. One end of the cavity is connected to the second straw, and the other end is connected to the second nozzle. The inner diameter of the cavity is larger than the diameter of the second straw, and the wind hood is inclined.

[0013] Another object of this disclosure is to provide a sweeper truck, including the above-described suction nozzle structure of the sweeper truck.

[0014] With the above technical solution, the first suction tube is connected to a first suction nozzle at its suction end, and the second suction tube is connected to a second suction nozzle at its suction end. Since the suction area of ​​the first suction nozzle is larger, a larger negative pressure is required to suck up the garbage into the first suction tube. Therefore, the first suction nozzle needs to have a smaller gap from the ground and be circumferentially enclosed. The suction area of ​​the second suction nozzle is smaller, and even if a feed inlet is set on the front side of the second suction nozzle, the negative pressure is sufficient to suck up the garbage. By setting the second suction nozzle in front of the first suction nozzle in its direction of travel, softer objects such as fallen leaves that are difficult for the first suction nozzle to suck up can be sucked up through the feed inlet, preventing the accumulation of fallen leaves.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a top view of the nozzle structure in this disclosure; Figure 2 This is a side view of the nozzle structure in this disclosure; Figure 3 This is a schematic diagram of the structure of the second suction nozzle in this disclosure; Figure 4 This is a diagram of the internal structure of the first suction nozzle in this publication.

[0017] Explanation of reference numerals in the attached figures 1. First suction nozzle; 11. Rubber plate; 2. First suction tube; 3. Second suction nozzle; 31. Feed inlet; 4. Second suction tube; 41. Fixed section; 42. Disassembly section; 5. Baffle; 6. Guide plate; 7. Air volume regulating valve; 8. Exhaust hood. Detailed Implementation

[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0019] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the upper, lower, top, and bottom of the corresponding component in its operational state in the direction of gravity, while "inner" and "outer" refer to the inner and outer contours relative to the component or structure itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0020] like Figure 1-4 As shown, this disclosure provides a suction nozzle structure for a sweeper truck, including: a first suction pipe 2; a first suction nozzle 1, disposed at the suction end of the first suction pipe 2 and having a first opening at the bottom of the first suction nozzle 1; a second suction pipe 4; a second suction nozzle 3, disposed at the suction end of the second suction pipe 4 and having a second opening at the bottom of the second suction nozzle 3; the second suction nozzle 3 is disposed in front of the first suction nozzle 1 in the direction of travel, the area of ​​the second opening is smaller than the area of ​​the first opening, and the second suction nozzle 3 has a feed inlet 31 extending to the second opening in the front of the direction of travel.

[0021] Through the above technical solution, the suction end of the first suction pipe 2 is connected to the first suction nozzle 1, and the suction end of the second suction pipe 4 is connected to the second suction nozzle 3. Since the suction area of ​​the first suction nozzle 1 is large, a larger negative pressure is required to suck the garbage into the first suction pipe 2. Therefore, the first suction nozzle 1 needs to have a small gap from the ground and be circumferentially closed. In order to allow the garbage to enter the first suction nozzle 1, the front side of the first suction nozzle 1 is set as a soft rubber plate 11. In this way, during the movement of the sweeper, the garbage can push the rubber plate 11 and enter the inner cavity of the first suction nozzle 1. However, it is difficult to push the rubber plate 11 to enter softer garbage such as fallen leaves. Therefore, the second suction nozzle 3 is set in front of the first suction nozzle 1 in the direction of travel. The suction area of ​​the second suction nozzle 3 is small. Even if the feed inlet 31 is set in front of the second suction nozzle 3, the negative pressure is sufficient to suck it up. In this way, softer objects such as fallen leaves that are difficult to suck up by the first suction nozzle 1 can be sucked up through the feed inlet 31, preventing the fallen leaves from accumulating.

[0022] As an optional implementation method, such as Figure 3As shown, baffles 5 extending outward along the direction of travel are provided on both sides of the feed inlet 31. The distance between the two baffles 5 gradually increases along the direction of extension, that is, the two baffles 5 are set in a V shape, which plays a role in gathering and guiding, so that more garbage enters the second suction nozzle 3. The angles at which the two baffles 5 unfold can be the same or different. The larger the unfolding angle, the larger the area of ​​garbage collection.

[0023] As an optional implementation, the inner height of the second suction nozzle 3 is higher than that of the first suction nozzle 1. The inner height is the distance between the lowest and highest points inside the nozzle. The higher the inner height, the larger the volume of objects that can enter the nozzle. In order to ensure the suction power of the first suction nozzle 1, the inner height of the first suction nozzle 1 is relatively low. However, this makes it difficult for larger garbage to enter the first suction nozzle 1. The second suction nozzle 3 requires less negative pressure, so the inner height of the second suction nozzle 3 can be increased, thereby picking up larger garbage and preventing larger garbage from being unable to be cleaned by the sweeper.

[0024] As an optional implementation method, such as Figure 1 As shown, the first suction nozzle 1 extends horizontally in a direction perpendicular to the direction of travel. Multiple first suction tubes 2 are spaced apart along the extension direction of the first suction nozzle 1. The suction nozzle structure also includes a guide plate 6 located on the front side of the first suction nozzle 1 in the direction of travel. The guide plate 6 is located between two adjacent first suction tubes 2. There are two guide plates 6. One end of the two guide plates 6 is connected, and the other end extends towards the first suction nozzle 1 and is inclined away from each other. That is, the first suction nozzle 1 extends along the width of the vehicle to pick up garbage over a larger area. The end of the guide plate 6 near the first suction nozzle 1 can be connected to the top cover of the first suction nozzle. In order to ensure the suction power of the first suction nozzle 1, multiple first suction tubes 2 are provided. The two guide plates 6 are constructed in a triangle shape, which can guide the garbage to the first suction tubes 2 on both sides for easy suction.

[0025] Optionally, such as Figure 1 As shown, there are multiple second suction nozzles 3. The number of second suction nozzles 3 is the same as the number of first suction tubes 2, and the second suction nozzles 3 and the first suction tubes 2 correspond one-to-one along the direction of travel. The multiple second suction nozzles 3 can better pick up the garbage in front of the first suction nozzle 1. The second suction nozzles 3 and the first suction tubes 2 correspond one-to-one along the direction of travel, that is, the second suction nozzles 3 are set in front of the first suction tubes 2. Because the guide plate 6 is set between two adjacent first suction tubes 2, the second suction nozzles 3 can avoid the guide plate 6, so that the garbage passing between the second suction nozzles 3 contacts the guide plate 6 and enters the first suction tube 2 through the guide plate 6.

[0026] Optionally, such as Figure 2As shown, each second nozzle 3 is individually connected to a second straw 4, which can ensure the suction power of the second nozzle 3. The other end of the second straw 4 is connected to the corresponding first straw 2. This can reduce the length of the second straw 4 while ensuring the suction power of the first straw 2. If multiple second straws 4 are connected to a first straw 2, the suction power of the first straw 2 will be dispersed.

[0027] In addition, such as Figure 2 As shown, the suction nozzle structure also includes an air volume regulating valve 7. Each second suction tube 4 is equipped with an air volume regulating valve 7. The air volume regulating valve 7 can be a manual regulating valve or an electric regulating valve. The air volume regulating valve 7 can increase or decrease the negative pressure of the second suction nozzle 3 until it is closed. Multiple second suction nozzles 3 can be closed and opened individually.

[0028] Optionally, such as Figure 2 As shown, the second suction pipe 4 includes a fixed section 41 and a detachable section 42. The fixed section 41 is fixedly connected to the first suction pipe 2. One end of the detachable section 42 is detachably connected to the fixed section 41, and the other end is connected to the second suction nozzle 3. The air volume regulating valve 7 is set on the fixed section 41. In seasons without fallen leaves, the front suction nozzle can also be removed to reduce the weight of the vehicle. A lifting device connected to the bottom of the vehicle body can be set on the first suction nozzle 1. This device can be a cylinder or a hydraulic cylinder. At least part of the first suction pipe 2 and the second suction pipe 4 are set as retractable corrugated pipes to drive the first suction nozzle 1 and the second suction nozzle 3 to rise and fall. When the sweeper is not performing sweeping operations, the suction nozzle device is raised to prevent it from affecting the normal driving of the sweeper. To ensure the stability of the second suction nozzle 3, the second suction pipe 4 can also be fixed to the first suction pipe 2 by a detachable fixing device such as a strap.

[0029] As an optional implementation method, such as Figure 3 As shown, the suction end of the second suction pipe 4 is equipped with an air hood 8, and the air hood 8 has a cavity inside. One end of the cavity is connected to the second suction pipe 4, and the other end is connected to the second suction nozzle 3. The inner diameter of the cavity is larger than the diameter of the second suction pipe 4, and the air hood 8 is set at an angle. The larger inner diameter of the cavity and the smaller diameter of the second suction pipe 4 change the cross-section of the channel formed by the cavity and the second suction pipe. This causes changes such as the contraction of the airflow channel. That is, the airflow first enters the cavity with a larger cross-section, and then enters the second suction pipe 4 with a smaller cross-section. When the airflow passes through, according to the Venturi effect (fluid flows in a channel with a variable cross-section, the flow velocity increases and the pressure decreases at the point where the cross-section narrows), the airflow velocity will increase at the point where the channel narrows, that is, the wind speed will increase. This helps to enhance the suction of the suction nozzle and improve the cleaning and collection effect of the sweeper. The angled setting can reduce the space occupied by the air hood 8 in the horizontal direction and prevent the diameter of the second suction nozzle 3 from being too large, thereby affecting its suction.

[0030] Another object of this disclosure is to provide a sweeper truck, including: the above-mentioned suction nozzle structure of the sweeper truck, with a second suction nozzle 3 provided on the front side of the first suction nozzle 1 in the direction of travel, to pick up softer objects such as fallen leaves that are difficult for the first suction nozzle 1 to pick up, and to prevent the fallen leaves from accumulating. The sweeper truck also includes a vehicle body, a power unit, and a collection device. The collection device is installed on the vehicle body. One end of the power unit is connected to the collection device, and the other end is connected to the first suction pipe 2 to drive airflow to generate suction force in the first suction pipe 2 and the second suction pipe 4. The first suction nozzle 1 is connected to the vehicle body through the first suction pipe 2 and a lifting device. The suction nozzle structure is located at the bottom of the vehicle body. A roller can be installed on the side of the first suction nozzle 1, with the lowest point of the roller lower than the lowest point of the first suction nozzle 1 to contact the ground.

[0031] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0032] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0033] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A suction nozzle structure for a sweeper truck, characterized in that, include: First straw; The first suction nozzle is disposed at the suction end of the first straw, and the bottom of the first suction nozzle has a first opening; Second straw; The second suction nozzle is located at the suction end of the second suction tube, and the bottom of the second suction nozzle has a second opening; The second suction nozzle is located in front of the first suction nozzle in the direction of travel. The area of ​​the second opening is smaller than the area of ​​the first opening. The second suction nozzle has a feed port extending to the second opening in front of the first opening in the direction of travel.

2. The suction nozzle structure of the sweeper truck according to claim 1, characterized in that, Both sides of the feed inlet are provided with baffles extending outward along the direction of travel, and the distance between the two baffles gradually increases along the extension direction.

3. The suction nozzle structure of the sweeper truck according to claim 1, characterized in that, The inner height of the second suction nozzle is higher than that of the first suction nozzle.

4. The suction nozzle structure of the sweeper truck according to claim 1, characterized in that, The first suction nozzle extends horizontally in a direction perpendicular to the direction of travel. Multiple first suction tubes are spaced apart along the extension direction of the first suction nozzle. The suction nozzle structure also includes a guide plate disposed in front of the first suction nozzle in the direction of travel. The guide plate is located between two adjacent first suction tubes. There are two guide plates. One end of the two guide plates is connected, and the other end extends toward the first suction nozzle and is inclined toward the direction away from each other.

5. The suction nozzle structure of the sweeper truck according to claim 4, characterized in that, The second suction nozzle is provided in multiple ways, and the number of the second suction nozzle is the same as the number of the first suction tube, and the second suction nozzle and the first suction tube correspond one-to-one along the direction of travel.

6. The suction nozzle structure of the sweeper truck according to claim 5, characterized in that, Each second nozzle is individually connected to a second straw, and the other end of the second straw is connected to the corresponding first straw.

7. The suction nozzle structure of the sweeper truck according to claim 6, characterized in that, The suction nozzle structure also includes an airflow regulating valve, which is provided on each of the second suction tubes.

8. The suction nozzle structure of the sweeper truck according to claim 7, characterized in that, The second straw includes a fixed section and a detachable section. The fixed section is fixedly connected to the first straw. One end of the detachable section is detachably connected to the fixed section, and the other end is connected to the second nozzle. The airflow regulating valve is disposed on the fixed section.

9. The suction nozzle structure of the sweeper truck according to claim 1, characterized in that, The second suction tube has an air guide hood at its suction end. The air guide hood has a cavity inside. One end of the cavity is connected to the second suction tube, and the other end is connected to the second suction nozzle. The inner diameter of the cavity is larger than the diameter of the second suction tube, and the air guide hood is tilted.

10. A sweeper truck, characterized in that, include: The suction nozzle structure of the sweeper truck according to any one of claims 1-9.

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