Movable purging equipment

Abstract

The utility model discloses movable blowing equipment which comprises an engine, a blowing device and a blowing device, the center of a wind wheel of the air blower is fixed on an output shaft of the engine; the drive axle comprises a reduction gearbox, a wheel drive shaft and walking wheels, the input end of the reduction gearbox is connected with an output shaft of the engine through a transmission mechanism, and an output shaft of the reduction gearbox is connected with the wheel drive shaft through a speed reducing mechanism; a self-walking clutch handle is installed between the left arm and the right arm of the control handrail and the handrail handle, a clutch swing arm is welded to one end of the self-walking clutch handle, a clutch pull rope is connected to the upper end of the clutch swing arm, and a clutch handle stop pin is welded to the lower end of the clutch swing arm. A parking handle is further installed on the handrail handle, and a limiting bottom plane is arranged at the lower end of the parking handle. When the self-propelled clutch handle is in a combined state and the parking handle is in a released state, the clutch handle stop pin is located below the limiting bottom plane of the parking handle to lock the parking handle. The device can be used for purging while advancing, and also can be used for performing fixed-point purging on a specific position in a parking state.

Description

Technical Field

[0001] This utility model relates to a large industrial or commercial device that can be used to clean, dry or sweep the ground, and more particularly to a mobile sweeping device, belonging to the field of sweeping device technology. Background Technology

[0002] Currently, snow removal and leaf clearing in areas outside major roads in China are still mainly done manually (approximately 500㎡ / h per person), resulting in significant dust pollution (PM10 concentration exceeding 200μg / m³) and high labor intensity. While motorized leaf vacuum cleaners are less efficient for distributed leaf clearing and have poor fuel economy, motorized leaf blowers can increase work efficiency by 5-8 times (covering an area of ​​3000-5000㎡ / h) and are suitable for large open areas (such as squares, roads, airports, and farmland).

[0003] The walk-behind blower uses a turbofan to blow air laterally towards the ground at a speed of over 80 meters per second. It is mainly used in municipal sanitation, landscaping, and snow removal. In addition to routine cleaning, its applications have expanded to industrial applications (such as port terminals and airport runway debris removal), and some models are compatible with agricultural particulate matter recycling systems.

[0004] Chinese utility model patent CN 206873366U discloses a blower for cleaning floors, including a housing and a blower assembly inside the housing. The housing has an air outlet channel. Under the action of the blower assembly, the blower generates airflow in the air outlet channel and discharges it outside the housing. The housing is connected to a water outlet device, which includes a water pump and a water outlet channel connected to the water pump. The water outlet channel communicates with the air outlet channel, and water is sent into the air outlet channel through the water outlet channel and discharged outside the housing along with the airflow generated by the blower assembly. This technical solution cannot move independently and can only be carried manually, resulting in a large workload.

[0005] Chinese patent application CN 118390446A discloses a road cleaning device and its sweeper. The road cleaning device includes a working body, a transition pipe, and a sweeping nozzle. The working body has an air outlet for blowing air outwards. The transition pipe extends vertically and is rotatably mounted to the side wall of the working body about its vertical axis, connecting to the air outlet. The sweeping nozzle has a sweeping port, is mounted on the transition pipe, and connects to the transition pipe, with the normal of the sweeping port forming an angle with the axis of the transition pipe. The airflow from the air outlet of the working body flows into the transition pipe and is then blown outwards through the sweeping nozzle, changing the air direction to blow downwards at an angle to the horizontal ground, thus achieving the function of blowing away leaves. Although this sweeper can move, it requires a person to push it forward and cannot be used for drying while parked. Utility Model Content

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0007] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0008] The purpose of this invention is to overcome the problems existing in the prior art and provide a mobile purging device that can purge the ground while moving forward, or purge a specific location while parked.

[0009] To solve the above technical problems, this utility model provides a mobile purging device, comprising:

[0010] Engine 1;

[0011] The blower 2 has a fan 2a installed in its volute, and the center of the fan 2a is fixed on the output shaft of the engine 1;

[0012] The drive axle includes a reduction gearbox 8, a wheel drive shaft 12, and wheels 13. The input end of the reduction gearbox 8 is connected to the output shaft of the engine 1 through a transmission mechanism, and the output shaft of the reduction gearbox 8 is connected to the wheel drive shaft 12 through a reduction mechanism. The wheels 13 are respectively installed at both ends of the wheel drive shaft 12.

[0013] The control armrest includes an armrest handle 17. A self-propelled clutch handle 23 is installed between the left and right arms of the armrest handle 17. A clutch swing arm 24 is welded to one end of the self-propelled clutch handle 23. The middle part of the clutch swing arm 24 is hinged to the inside of the armrest handle 17. A clutch pull rope 26 for controlling the clutch of the gearbox 8 is connected to the upper end of the clutch swing arm 24. An outwardly extending clutch handle stop pin 25 is welded to the lower end of the clutch swing arm 24.

[0014] A parking handle 27 is also installed on the armrest handle 17. The lower end of the parking handle 27 is provided with a limiting bottom plane. When the self-propelled clutch handle 23 is in the pressed engaged state and the parking handle 27 is in the pushed-forward released state, the clutch handle stop pin 25 is located below the limiting bottom plane of the parking handle 27 to lock the parking handle 27.

[0015] As an improvement of this utility model, a limiting rear step is provided at the middle of the rear side of the parking handle 27. When the self-propelled clutch handle 23 is in the released disengaged state and the parking handle 27 is in the pulled-back parking state, the clutch handle stop pin 25 is located below the limiting rear step of the parking handle 27 to lock the parking handle 27.

[0016] As a further improvement of this utility model, the transmission mechanism includes a crankshaft pulley 3, a belt 4, a tensioner 5, and a self-propelled pulley 6. The crankshaft pulley 3 is installed on the output shaft of the engine 1. The crankshaft pulley 3 is connected to the self-propelled pulley 6 through the belt 4. The tensioner 5 is provided in the middle of the belt 4. The self-propelled pulley 6 is installed at one end of the universal drive shaft 7. The other end of the universal drive shaft 7 is connected to the input end of the reduction gearbox 8.

[0017] As a further improvement of this utility model, the deceleration mechanism includes a small sprocket 9, a chain 10 and a large sprocket 11. The small sprocket 9 is installed on the output shaft of the deceleration box 8. The small sprocket 9 is connected to the large sprocket 11 through the chain 10. The large sprocket 11 is fixed on the wheel drive shaft 12.

[0018] As a further improvement of this utility model, the control armrest is equipped with an electric switch 18 for controlling the start of the engine 1 and a throttle handle 19, and the throttle handle 19 is connected to the throttle regulator of the engine 1 via a throttle pull rope 20.

[0019] As a further improvement of this utility model, a self-propelled speed control handle 21 is also installed on the control armrest. The self-propelled speed control handle 21 is connected to the speed control port of the reduction gearbox 8 through the speed control rope 22, and is used to adjust the travel speed of the walking wheel 13.

[0020] As a further improvement of this utility model, the blower 2 has a nozzle 41 with adjustable air outlet direction at the volute air outlet, and the nozzle 41 is oriented by an air outlet direction control component.

[0021] As a further improvement of this utility model, the air outlet steering control assembly includes a horizontal bracket 29, an air outlet steering handle 30, a spindle 31, a positioning base plate 32, an air outlet steering pull rope 36, a nozzle pull arm 37, a pull arm spring 38, a vertical bracket 39, and a nozzle rotating shaft 40. The positioning base plate 32 is fixed below the horizontal bracket 29, and the air outlet steering handle 30 is hinged to the horizontal bracket 29 via the spindle 31. Both ends of the spindle 31 are fixed to the horizontal bracket 29 and the positioning base plate 32. The upper end of the loop of the air outlet steering pull rope 36 is fixed to the horizontal bracket 29. The upper end of 36 extends out of the rope loop and is connected to the front side of the root of the air outlet steering handle 30; the rear part of the nozzle 41 is provided with a spherical shell part that is nested and connected to the volute outlet of the blower 2, and a nozzle shaft 40 is fixedly connected to it along the diameter line of the spherical shell. One end of the nozzle shaft 40 is connected to the middle of the nozzle pull arm 37. The upper end of the nozzle pull arm 37 is connected to the upper end of the vertical support 39 through the pull arm spring 38. The lower end of the rope loop of the air outlet steering rope 36 is fixed to the lower end of the vertical support 39, and the lower end of the air outlet steering rope 36 extends out of the rope loop and is connected to the lower end of the nozzle pull arm 37.

[0022] As a further improvement of this utility model, the air outlet steering handle 30 is provided with a pin hole in the middle, and a positioning pin 33 is inserted into the pin hole. After the air nozzle 41 is properly adjusted, the lower end of the positioning pin 33 is inserted into the corresponding positioning hole of the positioning base plate 32 to maintain the angle of the air nozzle 41.

[0023] As a further improvement of this utility model, a compression spring 34 is fitted on the upper part of the positioning pin 33, the lower end of the compression spring 34 abuts against the upper surface of the air outlet steering handle 30, and the upper end of the compression spring 34 abuts against the bottom of the top cap of the positioning pin 33; a retaining spring 35 is embedded in the lower circumference of the positioning pin 33, and the retaining spring 35 is located below the air outlet steering handle 30; the lower part of the positioning pin 33 is provided with a reduced diameter section, and a step is provided below the reduced diameter section.

[0024] Compared with existing technologies, the mobile purging device of this utility model has significant technical advantages and practical value, specifically reflected in the following aspects:

[0025] I. Highly efficient purging function and flexible directional control

[0026] Powerful Drive: This equipment uses an engine to directly drive the blower's impeller, generating a powerful airflow that effectively removes dust, debris, fallen leaves, and other contaminants from the ground. This direct drive method not only ensures high efficiency in sweeping but also allows for the completion of large-area cleaning in a short time, significantly improving work efficiency.

[0027] Precise Direction Adjustment: The blowing direction of the nozzle is controlled by the air outlet steering handle. Operators can flexibly adjust the blowing angle according to actual needs, easily handling both narrow corners and open areas. After the blowing direction is adjusted, it is locked using a positioning pin to ensure the stability of the nozzle direction during blowing, further improving the accuracy of the cleaning effect.

[0028] II. Convenient automatic walking and speed adjustment

[0029] Automatic walking function: Utilizing the engine's power output, the walking wheels are driven forward through the transmission mechanism and reduction gearbox, enabling the equipment to move automatically. This function frees the operator's hands, eliminating the need for manual pushing and pulling of the equipment, reducing labor intensity, and making cleaning work easier and more convenient.

[0030] Flexible speed adjustment: Equipped with a self-propelled speed control handle, operators can flexibly adjust the walking speed according to different cleaning scenarios and needs. Whether it's quickly cleaning large areas or slowly and meticulously cleaning complex parts, it can be easily achieved, improving the adaptability and operational flexibility of the equipment.

[0031] III. Reliable parking and fixed-point purging functions

[0032] Parking stability assurance: The disengagement or engagement of the deceleration mechanism is controlled by the self-propelled clutch lever. Combined with the interlocking action of the clutch lever's stop pin and the limiting bottom plane or rear step of the parking lever, the equipment remains stable in the parked state, effectively preventing movement caused by the reaction force generated by the airflow. This design ensures the reliability of long-term fixed-point purging in the parked state, making it particularly suitable for scenarios requiring continuous airflow drying, such as swimming pool changing room floors and construction site cement floors.

[0033] Enhanced operational safety: The parking handle cannot be pulled while the equipment is in operation. This unique design prevents operators from accidentally operating the equipment during operation, avoids potential safety accidents, and ensures the personal safety of the operators.

[0034] IV. Wide range of application scenarios and practical value

[0035] This mobile cleaning and wiping equipment has wide applicability. It is suitable not only for cleaning common areas such as city streets, parking lots, and garden areas, but also for drying floors in workshops, warehouses, poolsides, and stadiums. It can also be used to dry concrete floors at construction sites, clean up waterlogged fields before events, and treat flooded surfaces. Furthermore, the equipment can be used for lawn ventilation to prevent water damage caused by prolonged dampness. It provides an efficient and convenient solution for cleaning and maintenance work in various fields, demonstrating significant practical value and broad application prospects. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0037] Figure 1 This is a perspective view of the mobile purging device of this utility model;

[0038] Figure 2 This utility model provides a three-dimensional representation of the wind turbine and the walking control mechanism. Figure 1 ;

[0039] Figure 3 This utility model provides a three-dimensional representation of the wind turbine and the walking control mechanism. Figure 2 ;

[0040] Figure 4 This is a perspective view of the air outlet steering control component in this utility model;

[0041] Figure 5This is a perspective view of the air outlet steering handle in this utility model;

[0042] Figure 6 This is an exploded view of the air outlet steering handle in this utility model;

[0043] In the diagram: 1. Engine; 1a. Engine crankshaft;

[0044] 2. Blower; 2a. Fan wheel;

[0045] Transmission mechanism: 3. Crankshaft pulley; 4. Belt; 5. Tensioner; 6. Self-propelled pulley; 7. Universal drive shaft;

[0046] Drive axle: 8. Gearbox; 9. Small sprocket; 10. Chain; 11. Large sprocket; 12. Drive shaft; 13. Wheels; 14. Brake disc; 15. Brake caliper;

[0047] Handrails: 16. Lower handle; 17. Handrail grip;

[0048] 18. Electric switch; 19. Throttle handle; 20. Throttle cable;

[0049] 21. Self-propelled speed control handle; 22. Speed ​​control rope;

[0050] 23. Self-propelled clutch handle; 24. Clutch control arm; 25. Clutch handle stop pin; 26. Clutch pull rope;

[0051] 27. Parking handle; 28. Brake cable;

[0052] Air outlet steering control assembly: 29. Horizontal bracket; 30. Air outlet steering handle; 31. Spindle; 32. Positioning base plate; 33. Positioning pin; 33a. Snap ring groove; 34. Compression spring; 35. Snap ring; 36. Air outlet steering pull rope; 37. Nozzle pull arm; 38. Pull arm spring; 39. Vertical bracket; 40. Nozzle pivot; 41. Nozzle. Detailed Implementation

[0053] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0054] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0056] like Figures 1 to 6 As shown, the mobile purging device of this utility model includes an engine 1, a blower 2, a transmission mechanism, a drive axle and a control handle. The engine 1 is provided with an engine crankshaft 1a, and the blower 2 is provided with a impeller 2a in the volute. The center hole of the impeller 2a is fixed to the output end of the engine crankshaft 1a, and the air outlet of the volute is provided with a nozzle 41 that can adjust the air outlet direction.

[0057] The output end of the engine crankshaft 1a is also equipped with a crankshaft pulley 3. The crankshaft pulley 3 is connected to the self-propelled pulley 6 via a belt 4. A tensioning pulley 5 is provided on the inner circumference of the belt 4. The self-propelled pulley 6 is installed at one end of the universal drive shaft 7. The other end of the universal drive shaft 7 is connected to the input end of the reduction gearbox 8. A small sprocket 9 is installed on the output shaft of the reduction gearbox 8. The small sprocket 9 is connected to the large sprocket 11 via a chain 10. The large sprocket 11 is fixed on the wheel drive shaft 12. The two ends of the wheel drive shaft 12 are respectively equipped with traveling wheels 13.

[0058] A brake disc 14 is fixed on the drive shaft 12, and a brake caliper 15 is fixed on the frame. The jaws of the brake caliper 15 clamp the brake disc 14 on both sides of its circumference.

[0059] A lower handle 16 extending upwards is fixed to the rear side of the frame. The two ends of the armrest 17 extend backwards and then downwards, and are fixedly connected to the upper end of the lower handle 16.

[0060] An electric switch 18, a throttle handle 19, and a self-propelled speed control handle 21 are installed on the left arm of the handle 17. The electric switch 18 controls the starting of the engine 1. The lower end of the throttle handle 19 controls the throttle regulator of the engine 1 via a throttle cable 20. The lower end of the self-propelled speed control handle 21 is connected to the speed control port of the reduction gearbox 8 via a speed control cable 22 to change the travel speed of the traveling wheels 13.

[0061] A self-propelled clutch handle 23 with its middle section bent backward is hinged between the left and right arms of the handrail 17. A clutch swing arm 24 is welded to the right end of the self-propelled clutch handle 23. The middle part of the clutch swing arm 24 is hinged to the inside of the handrail 17. A clutch pull rope 26 is connected to the upper end of the clutch swing arm 24. The lower end of the clutch pull rope 26 is connected to the clutch port of the gearbox 8.

[0062] When the self-propelled clutch handle 23 is pressed down and is in a horizontal position, the clutch cable 26 is tightened, engaging the gearbox 8, and the drive wheels 13 are in a forward-moving state. When the self-propelled clutch handle 23 is lifted, the clutch cable 26 is loosened, disengaging the gearbox 8, and the drive wheels 13 stop moving forward.

[0063] A parking handle 27 is also installed on the right arm of the handlebar 17. The lower middle part of the parking handle 27 is hinged to the right arm of the handlebar 17, and the lower end of the parking handle 27 is connected to a brake cable 28. The lower end of the brake cable 28 is connected to the drive end of the brake caliper 15. When the upper end of the parking handle 27 is pulled back and passes the dead center, the brake cable 28 drives the caliper jaws of the brake caliper 15 to clamp the brake disc 14, and the drive wheel 13 stops and enters the parking state. When the upper end of the parking handle 27 is released forward, the brake cable 28 loosens, the caliper jaws of the brake caliper 15 release the brake disc 14, and the drive wheel 13 exits the parking state.

[0064] In some scenarios, such as when it is desirable to continuously blow air onto the floor of a swimming pool changing room to dry it, prolonged blowing is required while the vehicle is parked. However, the reaction force generated by the airflow can cause the equipment to move in the opposite direction, preventing the operator from removing themselves from the handle 17. In other words, when the blower 2 is in operation, the operator cannot leave the equipment, causing significant inconvenience.

[0065] In view of the above, the lower end of the parking handle 27 is provided with a limiting bottom plane, the middle of the rear side of the parking handle 27 is provided with a limiting rear step, and the lower end of the clutch lever 24 is welded with a clutch handle stop pin 25 extending horizontally to the right.

[0066] When the parking handle 27 is in the released state with the upper end forward, the self-propelled clutch handle 23 is in the engaged state with the clutch handle pin 25 pressed down. At this time, the clutch handle stop pin 25 is located below the limiting bottom plane of the parking handle 27, so that the parking handle 27 cannot be pulled up to park.

[0067] When the self-propelled clutch handle 23 is lifted, the clutch cable 26 loosens, causing the gearbox 8 to disengage, and the traveling wheels 13 stop moving forward. When the upper end of the parking handle 27 is pulled back and passes the dead point, the clutch handle stop pin 25 is located below the limit step of the parking handle 27, preventing the parking handle 27 from continuing to rotate. In this way, the equipment is reliably kept in the parking state to counteract the reaction force generated by the blower, thus achieving long-term reliable fixed-point purging in the parking state.

[0068] An air outlet steering control assembly is installed in the middle of the cross arm of the handrail 17. The air outlet steering control assembly includes a horizontal bracket 29, an air outlet steering handle 30, a positioning base plate 32, an air outlet steering pull rope 36, and a positioning pin 33. The horizontal bracket 29 is fixed above the positioning base plate 32. The air outlet steering handle 30 is located between the horizontal bracket 29 and the positioning base plate 32, and the root of the air outlet steering handle 30 is hinged to the spindle 31. Both ends of the spindle 31 are fixed to the horizontal bracket 29 on the positioning base plate 32.

[0069] The upper end of the loop of the air outlet steering rope 36 is fixed to the horizontal bracket 29, and the upper end of the air outlet steering rope 36 extends out of the loop and is connected to the front side of the root of the air outlet steering handle 30.

[0070] The rear of the nozzle 41 is provided with a spherical shell, and the nozzle shaft 40 is provided along the diameter line of the spherical shell. The nozzle shaft 40 is fixedly connected to the nozzle 41. One end of the nozzle shaft 40 is fixed to the middle of the nozzle pull arm 37. The upper end of the nozzle pull arm 37 is connected to the upper end of the vertical support 39 through the pull arm spring 38. The lower end of the loop of the air outlet turning pull rope 36 is fixed to the lower end of the vertical support 39. The lower end of the air outlet turning pull rope 36 extends out from the loop and is connected to the lower end of the nozzle pull arm 37.

[0071] Pulling the air outlet steering handle 30 to move the air outlet steering rope 36 causes the lower end of the air outlet steering rope 36 to pull the air nozzle arm 37 to rotate, which in turn drives the air nozzle shaft 40 to rotate, thereby changing the orientation of the air nozzle 41; the tension spring 38 provides resistance against the air outlet steering rope 36.

[0072] The air outlet steering handle 30 has a pin hole in the middle, and a positioning pin 33 is inserted into the pin hole. After the air nozzle 41 is properly oriented, the lower end of the positioning pin 33 is inserted into the corresponding positioning hole of the positioning base plate 32 to maintain the angle of the air nozzle 41.

[0073] A compression spring 34 is fitted onto the upper part of the positioning pin 33. The lower end of the compression spring 34 abuts against the upper surface of the air outlet steering handle 30, and the upper end of the compression spring 34 abuts against the bottom of the cap of the positioning pin 33. The lower end of the positioning pin 33 is inserted into the corresponding positioning hole on the positioning base plate 32. Multiple positioning holes are evenly arranged around the axis of the spindle 31. A retaining spring groove 33a is provided on the lower circumference of the positioning pin 33, and a retaining spring 35 is embedded in the retaining spring groove 33a. The retaining spring 35 is located below the air outlet steering handle 30 to prevent the positioning pin 33 from slipping upward. The lower part of the positioning pin 33 has a reduced diameter section. After the reduced diameter section is inserted into the positioning hole, the positioning pin 33 is tilted at a certain angle so that the step below the reduced diameter section is locked against the bottom of the air outlet steering handle 30 to counteract the elastic force of the compression spring 34. When changing the positioning hole, press down the positioning pin 33 to disengage the lower step from the bottom of the handle. Then, the positioning pin 33 pops up under the action of the compression spring 34. After the air outlet steering handle 30 adjusts the angle, reinsert the positioning pin 33 into the corresponding positioning hole.

[0074] This mobile blowing and sweeping equipment uses strong airflow to remove dust, debris, fallen leaves, and other contaminants from the ground. It is commonly used for cleaning parking lots, streets, and gardens. It can also be used for sweeping fallen leaves in properties and removing dust from factory workshops. Furthermore, it can be used to quickly dry surfaces such as workshops, warehouses, poolside areas, and sports stadiums. Additionally, it can be used to dry cement surfaces at construction sites, clean up waterlogged fields before events, and treat flooded areas. It can also be used for lawn ventilation to prevent prolonged dampness and damage.

[0075] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A mobile purging device, characterized in that, include: Engine (1); The blower (2) has a fan (2a) in its volute, and the center of the fan (2a) is fixed on the output shaft of the engine (1); The drive axle includes a reduction gearbox (8), a wheel drive shaft (12), and a traveling wheel (13). The input end of the reduction gearbox (8) is connected to the output shaft of the engine (1) through a transmission mechanism. The output shaft of the reduction gearbox (8) is connected to the wheel drive shaft (12) through a reduction mechanism. The traveling wheels (13) are respectively installed at both ends of the wheel drive shaft (12). The operating armrest includes an armrest handle (17). A self-propelled clutch handle (23) is installed between the left and right arms of the armrest handle (17). A clutch swing arm (24) is welded to one end of the self-propelled clutch handle (23). The middle part of the clutch swing arm (24) is hinged to the inside of the armrest handle (17). A clutch pull rope (26) for controlling the clutch of the gearbox (8) is connected to the upper end of the clutch swing arm (24). An outwardly extending clutch handle stop pin (25) is welded to the lower end of the clutch swing arm (24). A parking handle (27) is also installed on the handrail (17). The lower end of the parking handle (27) is provided with a limiting bottom plane. When the self-propelled clutch handle (23) is in the pressed engagement state and the parking handle (27) is in the pushed release state, the clutch handle stop pin (25) is located below the limiting bottom plane of the parking handle (27) to lock the parking handle (27).

2. The mobile purging device according to claim 1, characterized in that: The parking handle (27) has a limiting rear step at the rear center. When the self-propelled clutch handle (23) is in the released disengaged state and the parking handle (27) is in the pulled-back parking state, the clutch handle stop pin (25) is located below the limiting rear step of the parking handle (27) to lock the parking handle (27).

3. The mobile purging device according to claim 1 or 2, characterized in that: The transmission mechanism includes a crankshaft pulley (3), a belt (4), a tensioner (5), and a self-propelled pulley (6). The crankshaft pulley (3) is mounted on the output shaft of the engine (1). The crankshaft pulley (3) is connected to the self-propelled pulley (6) via the belt (4). The tensioner (5) is located in the middle of the belt (4). The self-propelled pulley (6) is mounted on one end of the universal drive shaft (7). The other end of the universal drive shaft (7) is connected to the input end of the gearbox (8).

4. The mobile purging device according to claim 1 or 2, characterized in that: The deceleration mechanism includes a small sprocket (9), a chain (10) and a large sprocket (11). The small sprocket (9) is installed on the output shaft of the deceleration box (8). The small sprocket (9) is connected to the large sprocket (11) through the chain (10). The large sprocket (11) is fixed on the wheel drive shaft (12).

5. The mobile purging device according to claim 1 or 2, characterized in that: The control armrest is equipped with an electric switch (18) for controlling the start of the engine (1) and a throttle handle (19). The throttle handle (19) is connected to the throttle regulator of the engine (1) via a throttle cable (20).

6. The mobile purging device according to claim 1 or 2, characterized in that: The control armrest is also equipped with a self-propelled speed control handle (21), which is connected to the speed control port of the gearbox (8) via a speed control rope (22) to adjust the travel speed of the walking wheel (13).

7. The mobile purging device according to claim 1 or 2, characterized in that: The blower (2) has a nozzle (41) at the volute outlet that can adjust the airflow direction. The nozzle (41) is adjusted in direction by the airflow direction control component.

8. The mobile purging device according to claim 7, characterized in that: The air outlet steering control assembly includes a horizontal bracket (29), an air outlet steering handle (30), a spindle (31), a positioning base plate (32), an air outlet steering pull rope (36), a nozzle pull arm (37), a pull arm spring (38), a vertical bracket (39), and a nozzle rotating shaft (40). The positioning base plate (32) is fixed below the horizontal bracket (29). The air outlet steering handle (30) is hinged to the horizontal bracket (29) through the spindle (31). Both ends of the spindle (31) are fixed to the horizontal bracket (29) and the positioning base plate (32). The upper end of the loop of the air outlet steering pull rope (36) is fixed to the horizontal bracket (29). 6) The upper end extends out of the rope loop and is connected to the front side of the root of the air outlet steering handle (30); the rear part of the nozzle (41) is provided with a spherical shell part that is nested and connected to the volute outlet of the blower (2), and a nozzle shaft (40) is fixedly connected to it along the diameter line of the spherical shell. One end of the nozzle shaft (40) is connected to the middle of the nozzle pull arm (37), and the upper end of the nozzle pull arm (37) is connected to the upper end of the vertical support (39) through the pull arm spring (38). The lower end of the rope loop of the air outlet steering pull rope (36) is fixed to the lower end of the vertical support (39), and the lower end of the air outlet steering pull rope (36) extends out of the rope loop and is connected to the lower end of the nozzle pull arm (37).

9. The mobile purging device according to claim 8, characterized in that: The air outlet steering handle (30) has a pin hole in the middle, and a positioning pin (33) is inserted into the pin hole. After the air nozzle (41) is properly oriented, the lower end of the positioning pin (33) is inserted into the corresponding positioning hole of the positioning base plate (32) to keep the angle of the air nozzle (41).

10. The mobile purging device according to claim 9, characterized in that: The upper part of the positioning pin (33) is fitted with a compression spring (34), the lower end of the compression spring (34) abuts against the upper surface of the air outlet steering handle (30), and the upper end of the compression spring (34) abuts against the bottom of the top cap of the positioning pin (33); a retaining spring (35) is embedded in the lower circumference of the positioning pin (33), and the retaining spring (35) is located below the air outlet steering handle (30); the lower part of the positioning pin (33) is provided with a reduced diameter section, and a step is provided below the reduced diameter section.

Images