Pull-type vacuum sweeper

Abstract

The utility model discloses a traction type vacuum sweeper which comprises a frame and a traction frame fixed at the front end of the frame, and a negative pressure generating device is installed at the top end of the frame. A filtering dust collecting barrel is mounted at the rear end of the negative pressure generating device through a lifting mechanism; the traction frame comprises an upper connecting frame and a lower connecting frame, and the upper connecting frame is fixedly mounted at the bottom end of one side of the frame; the lifting mechanism can conveniently lower the filtering and dust collecting barrel, lower the gravity center of the vehicle and facilitate operation and maintenance during dust cleaning and can also lift the filtering and dust collecting barrel and increase the height during working so that ton bags and the like can be placed below the filtering and dust collecting barrel to package discharged dust, the dust cleaning efficiency is effectively improved, manpower and material resources are saved, and the working efficiency is improved. The vacuum sweeper can easily realize flexible steering when being driven by the tractor, so that the risk of dust collection omission or obstacle collision caused by inflexible steering is reduced, and the operation safety and continuity are improved; the device is simple in structure, convenient to operate and worthy of popularization.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and more specifically, to a towable vacuum cleaner. Background Technology

[0002] In many industrial plants, production processes generate large amounts of dust, debris, and other contaminants. If this dust and contaminants are not cleaned promptly, they can damage production equipment and affect production efficiency, thus necessitating the use of vacuum cleaners. However, existing vacuum cleaners have fixed dust collection bins, making cleaning and dust packing inconvenient. Manual operation is complex and labor-intensive. Furthermore, in modern working environments, vacuum cleaners cannot adapt to various complex road conditions and site conditions, lacking good steering and following performance, and cannot move flexibly back and forth. Therefore, we propose a towed vacuum cleaner. Utility Model Content

[0003] The purpose of this utility model is to provide a towable vacuum cleaner to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a towable vacuum cleaner, comprising a frame and a tow frame fixed to the front end of the frame, wherein a negative pressure generating device is installed at the top of the frame; a filter dust collection bin is installed at the rear end of the negative pressure generating device via a lifting mechanism; the tow frame includes an upper connecting frame and a lower connecting frame, the upper connecting frame being fixedly installed at the bottom of one side of the frame; the upper connecting frame and the lower connecting frame are rotatably connected via a steering wheel; an A-shaped movable frame is installed on the front side of the lower connecting frame; a fixed sleeve is fixedly installed in the middle of the movable frame; an inner shaft is coaxially rotatably arranged inside the fixed sleeve; a caster wheel is installed at the bottom end of the inner shaft; and a tow rod is inserted through the front end of the movable frame.

[0005] Preferably, the lifting mechanism includes two fixed seats 1 and two fixed seats 2 respectively fixedly mounted on the negative pressure generating device and on both sides of the filter dust collection bin. The fixed seats 1 and fixed seats 2 are connected by two lifting connecting arms. The lifting connecting arms are connected to the negative pressure generating device box by a hydraulic lifting rod.

[0006] Preferably, the traction rod has a T-shaped cross-section, and a spring is provided on the outer wall of the traction rod on one side of the movable frame.

[0007] Preferably, the hydraulic lifting rod is inclined, and the output end of the hydraulic lifting rod is fixed to one side of the bottom end of the lifting connecting arm; the plurality of lifting connecting arms are respectively rotatably connected to fixed seat one and fixed seat two.

[0008] Preferably, the filter dust collection bin and the negative pressure generating device are connected via a connecting pipe.

[0009] Preferably, the wheel frame and the lower connecting frame are equipped with movable wheels.

[0010] Beneficial Effects: Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up the lifting mechanism, the filter dust collection bucket can be lowered during dust cleaning, lowering the vehicle's center of gravity and facilitating operation and maintenance. It can also be raised during operation to increase the height for placing ton bags or other containers below to package the discharged dust, effectively improving the efficiency of dust cleaning and saving manpower and resources, making the entire dust collection and subsequent processing process more convenient and efficient. Through the setting of the towing frame structure, the combination of the upper and lower connecting frames, the negative pressure generating device, and the steering wheel, along with the design of the movable frame and universal wheels, the vacuum truck can easily and flexibly steer when towed by the towing vehicle, closely following the trajectory of the towing vehicle, reducing the risk of dust leakage or collision with obstacles due to inflexible steering, improving operational safety and continuity, and enabling convenient and flexible movement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a towed vacuum cleaner proposed in this utility model.

[0012] Figure 2 This is a schematic diagram of the towing frame structure of a towing vacuum cleaner according to the present invention.

[0013] Figure 3 This is a schematic diagram of the lifting mechanism of a traction vacuum cleaner proposed in this utility model.

[0014] In the attached diagram: 1-Chassis, 2-Negative pressure generating device, 3-Filter dust collection bin, 4-Fixed seat one, 5-Fixed seat two, 6-Lifting connecting arm, 7-Hydraulic lifting rod, 8-Connecting pipe, 9-Upper connecting frame, 10-Steering wheel, 11-Lower connecting frame, 12-Moving frame, 13-Fixed sleeve, 14-Inner axle, 15-Wheel caster, 16-Traction rod, 17-Spring, 18-Moving wheel, 19-Wheel frame. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Example

[0018] Please refer to the accompanying drawings. In this embodiment of the invention, a towable vacuum cleaner includes a frame 1 and a tow frame fixed to the front end of the frame. A negative pressure generating device 2 is installed at the top of the frame 1. A filter dust collection bin 3 is installed at the rear end of the negative pressure generating device 2 via a lifting mechanism. The tow frame 9 includes an upper connecting frame 9 and a lower connecting frame 11. The upper connecting frame 9 is fixedly installed at the bottom of one side of the frame 1. The upper connecting frame 9 and the lower connecting frame 11 are rotatably connected via a steering wheel 10. An A-shaped movable frame 12 is installed on the front side of the lower connecting frame 11. A fixing sleeve 13 is fixedly installed in the middle of the movable frame 12. An inner shaft 14 is coaxially rotatably arranged inside the fixing sleeve 13. A universal wheel 15 is installed at the bottom end of the inner shaft 14 to support the triangular movable frame 12. A rod is inserted through the front end of the movable frame 12. The lifting mechanism includes two fixed seats 1 5 and two fixed seats 2 5 respectively fixedly mounted on the negative pressure generating device 2 and on both sides of the filter dust collection bin 3. The fixed seats 1 and 2 5 are connected by two lifting connecting arms 6. The lifting connecting arms 6 are connected to the negative pressure generating device box 2 by a hydraulic lifting rod 7. The cross-section of the lifting rod 16 is T-shaped. A spring 17 is provided on the outer wall of the lifting rod 16 on one side of the movable frame 12. The hydraulic lifting rod 7 is inclined and its output end is fixed to one side of the bottom end of the lifting connecting arm 6. Multiple lifting connecting arms 6 are rotatably connected to the fixed seats 1 4 and 2 5 respectively. The filter dust collection bin 3 is connected to the negative pressure generating device 2 through a connecting pipe 8. The wheel frame 19 and the lower connecting frame 11 are equipped with movable wheels 18.

[0019] Usage process:

[0020] In use, the vacuum truck is connected to a tractor unit via a tow bar. The tractor unit drives the vacuum truck forward. During vacuuming, the negative pressure generating device 2 is activated. After activation, the negative pressure generating device 2 drives the vacuuming system. Under the negative pressure generated by the vehicle's forward movement, outside air, carrying dust and other debris, is sucked in through the suction port. The dust-laden air then enters the filter dust collection bin negative pressure generating device 3 through the connecting pipe. Inside the filter dust collection bin negative pressure generating device 3, the air passes through filter media such as a filter screen. Dust particles are intercepted and adsorbed on the filter screen surface or deposited at the bottom of the bin. The purified air is then discharged from the exhaust port of the filter dust collection bin, completing the vacuuming and purification process. During the discharge process, the lifting mechanism is activated. The hydraulic lifting rod drives the lifting connecting arm 6 to the positions of fixed seat 4 and fixed seat 5, thereby driving the filter dust collection bin to rise or fall. This allows the filter dust collection bin to be lowered to reduce the center of gravity when cleaning dust, and then raised during operation to increase the height for placing ton bags underneath to pack the discharged dust, saving time and effort.

[0021] When the tractor changes direction, the towing rod 16 pulls the movable frame 12. Since the upper connecting frame 9 and the lower connecting frame 11 are connected by the steering wheel 10, the lower connecting frame 11 can rotate flexibly relative to the upper connecting frame 9. At the same time, the inner shaft 14 in the fixed sleeve 13 drives the universal wheel 15 to rotate, and together with the moving wheel 18, the vacuum cleaner can follow the tractor's steering action, ensuring that the vacuum cleaner can accurately follow the tractor's path, adapt to different road conditions and work sites in the factory, and move back and forth conveniently and flexibly.

[0022] It is worth noting that the entire device is controlled via control buttons. Since the negative pressure generating device matched to the control buttons contains a power source, a hydraulic station, and a power distribution cabinet—all three are common equipment and represent existing mature technologies—their electrical connections and specific circuit structures will not be elaborated upon here. Power supply is also common knowledge in this field, and since this invention is primarily for protecting mechanical devices, the control method and circuit connections will not be explained in detail.

[0023] In the above process, the lifting mechanism allows for convenient lowering of the filter dust collection bin during dust cleaning, reducing the vehicle's center of gravity and facilitating operation and maintenance. It also allows for raising the bin during operation, increasing its height to accommodate ton bags for packaging the discharged dust, effectively improving dust cleaning efficiency and saving manpower and resources. This makes the entire vacuuming and subsequent processing more convenient and efficient. The towing frame structure, the combination of the upper and lower connecting frames, the negative pressure generating device, and the steering wheel, along with the movable frame and casters, enables the vacuum truck to easily and flexibly steer when towed, closely following the towing vehicle's trajectory. This reduces the risk of missed dust or collisions with obstacles due to inflexible steering, improving operational safety and continuity, and allowing for convenient and flexible movement. This application features a simple structure, strong practicality, and easy operation, making it worthy of promotion.

[0024] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A towable vacuum cleaner, characterized in that: The device includes a frame and a tow frame fixed to the front end of the frame. A negative pressure generating device is installed at the top of the frame. A filter dust collection bin is installed at the rear end of the negative pressure generating device via a lifting mechanism. The tow frame includes an upper connecting frame and a lower connecting frame. The upper connecting frame is fixedly installed at the bottom of one side of the frame. The upper connecting frame and the lower connecting frame are rotatably connected via a steering wheel. An A-shaped movable frame is installed on the front side of the lower connecting frame. A fixed sleeve is fixedly installed in the middle of the movable frame. An inner shaft is coaxially rotatably arranged inside the fixed sleeve. A caster wheel is installed at the bottom end of the inner shaft. A tow bar is inserted through the front end of the movable frame.

2. The towed vacuum cleaner truck according to claim 1, characterized in that: The lifting mechanism includes two fixed seats 1 and two fixed seats 2 respectively fixedly installed on the negative pressure generating device and on both sides of the filter dust collection bin. The fixed seats 1 and fixed seats 2 are connected by two lifting connecting arms. The lifting connecting arms are connected to the negative pressure generating device box by a hydraulic lifting rod.

3. The towed vacuum cleaner truck according to claim 1, characterized in that: The traction rod has a T-shaped cross-section, and a spring is provided on the outer wall of the traction rod on one side of the movable frame.

4. A towed vacuum cleaner truck according to claim 2, characterized in that: The hydraulic lifting rod is inclined, and the output end of the hydraulic lifting rod is fixed to one side of the bottom end of the lifting connecting arm; the multiple lifting connecting arms are respectively rotatably connected to fixed seat one and fixed seat two.

5. A towable vacuum cleaner according to claim 1, characterized in that: The filter dust collection bin is connected to the negative pressure generating device via a connecting pipe.

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