Telescopic sleeve type desert road sand blower with high sealing performance

Abstract

The invention belongs to the technical field of sand blowing machines, and provides a high-sealing-performance telescopic sleeve type desert road sand blowing machine which comprises a sand prevention cover, a fan cover, a rack and a vehicle body. A sand-proof cover is hinged to the top wall of one side of the fan cover, an overturning assembly is installed between the top face of the sand-proof cover and the top face of the fan cover, and the overturning assembly controls the sand-proof cover to rotate along a hinge shaft; the output end of the fan is connected with a blowing air duct assembly, and a sand-proof sealing cover is installed at an air inlet in the front end face of the fan cover in a sealed mode. The air blowing air duct assembly comprises an upper air blowing air duct section, an upper telescopic sleeve, a lower telescopic sleeve, an air blowing section, a rotating assembly and a telescopic assembly; by arranging the overturning assembly, the blowing air duct assembly, the rotating assembly and the telescopic assembly, horizontal steering of the blowing air duct assembly is achieved through the rotating assembly, the lower telescopic sleeve is controlled by the telescopic assembly to stretch out and draw back vertically, the blowing range is expanded, air leakage is reduced, the sand blowing efficiency is improved, disassembly-free rapid maintenance is achieved, and the downtime is shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of sand blowing machines, and specifically relates to a highly sealed telescopic sleeve type desert highway sand blowing machine. Background Art

[0002] At present, the total mileage of highways in China has reached 5.28 million kilometers, forming a national highway network with expressways as the backbone, ordinary trunk lines as the veins, and rural roads as the foundation. The workload of highway maintenance is huge. In highway maintenance, traditional road cleaning relies on manual labor, with low efficiency. Especially for the cleaning of expressways, not only is the cleaning speed unable to keep up, but there are also huge operation risks.

[0003] A blowing machine is a highly efficient mechanized highway cleaning device, which has the remarkable advantages of high operation efficiency, low maintenance volume, and simple operation. It is gradually replacing manual labor, especially in the cleaning operation of expressways, where its advantages are particularly obvious and the market potential is huge. Currently, the existing blowing machines are only developed for ordinary road surfaces and are still powerless for desert highways. However, the maintenance of desert highways is one of the most difficult in highway maintenance. The cleaning of desert highways is difficult and there are repeated problems, and the maintenance cycle is short.

[0004] The existing blowing machines have limited adjustment ranges and it is difficult to flexibly cope with complex road conditions. When cleaning desert highways, the engine is prone to ingesting sand. The sand and dust invade the engine through the air inlet, resulting in poor heat dissipation, increased component wear, high failure rates, and high air leakage rates.

[0005] Therefore, those skilled in the art have proposed a highly sealed telescopic sleeve type desert highway sand blowing machine to solve the problems raised in the background art. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a highly sealed telescopic sleeve type desert highway sand blowing machine to solve the problems in the prior art that the blowing machine has a limited adjustment range and it is difficult to flexibly cope with complex road conditions, and the engine is prone to ingesting sand when cleaning desert highways.

[0007] A highly sealed telescopic sleeve type desert highway sand blowing machine includes: a sand protection cover, a fan cover, a frame, and a vehicle body;

[0008] The upper surface of the vehicle body is fixedly installed with a frame. The upper surface of the frame is installed with a fan cover and an engine. One side top wall of the fan cover is hingedly installed with a sand protection cover. A flipping assembly is installed between the top surface of the sand protection cover and the top surface of the fan cover. The flipping assembly controls the sand protection cover to rotate along the hinge axis. The sand protection cover is located around the engine;

[0009] Another side wall of the fan cover is provided with an air outlet groove. A fan is installed in the air outlet groove. The output end of the fan is connected with a blowing air duct assembly. A sand protection seal cover is hermetically installed at the air inlet of the front end face of the fan cover;

[0010] The blowing hair dryer assembly includes an upper blowing hair dryer section, an upper telescopic sleeve, a lower telescopic sleeve, a blowing section, a rotating assembly, and a telescopic assembly. The upper blowing hair dryer section is connected to the output end of the blower. The bottom end of the upper blowing hair dryer section is rotatably installed with the upper telescopic sleeve. The lower telescopic sleeve is limitedly sleeved on the circumferential side of the upper telescopic sleeve. The blowing section is fixedly connected to the lower telescopic sleeve. The rotating assembly controls the rotation of the upper telescopic sleeve, and the telescopic assembly controls the telescopic movement of the lower telescopic sleeve.

[0011] Preferably, the rotating assembly includes a stepper motor, a small gear, and a large gear. The large gear is installed on the circumferential side of the upper telescopic sleeve. The stepper motor is fixedly installed on the circumferential side of the upper blowing hair dryer section. The small gear is installed at the output end of the stepper motor, and the large gear meshes with the small gear.

[0012] Preferably, the telescopic assembly includes an upper connecting ear, a lower connecting ear, and a telescopic oil cylinder. The upper connecting ear is fixed on the circumferential side of the upper telescopic sleeve. The lower connecting ear is fixed on the circumferential side of the lower telescopic sleeve. The tail of the telescopic oil cylinder is rotatably installed at the upper connecting ear, and the telescopic end of the telescopic oil cylinder is rotatably connected to the lower connecting ear.

[0013] Preferably, the telescopic assembly further includes an upper guide sleeve, a lower guide sleeve, and a guide rod. Two groups of upper guide sleeves are fixed on the circumferential side of the upper telescopic sleeve. Two groups of lower guide sleeves are fixed on the circumferential side of the lower telescopic sleeve. The guide rod is fixed on the inner wall of the upper guide sleeve, and the lower guide sleeve is slidably matched with the guide rod.

[0014] Preferably, the upper blowing hair dryer section includes a square flange, a transition section, and a first flange. The square flange is connected to the top of the transition section. The square flange and the air outlet end of the blower are fixedly connected by bolts. The first flange is connected to the bottom of the transition section. A motor fixing plate is fixedly connected to the side wall of the square flange, and a stepper motor is installed at the motor fixing plate. A pressing plate is installed above the large gear, a sliding seal sleeve is installed between the pressing plate and the large gear, and a telescopic guide seal sleeve is provided at the connection between the upper telescopic sleeve and the lower telescopic sleeve.

[0015] Preferably, the top of the upper telescopic sleeve is fixedly connected with a second flange. The second flange and the first flange are fixedly connected by bolts. The bottom of the lower telescopic sleeve is fixedly connected with a third flange. The top of the blowing section is fixedly connected with a fourth flange. The third flange and the fourth flange are fixedly connected.

[0016] Preferably, it further includes a wind direction adjusting assembly, which includes a wind direction adjusting plate, a wind direction adjusting oil cylinder, and a connecting plate. The connecting plate is fixed on the circumferential side of the lower telescopic sleeve. The wind direction adjusting plate is hinged to the outer top wall of the blowing section, and a wind direction adjusting oil cylinder is hingedly installed between the connecting plate and the wind direction adjusting plate.

[0017] Preferably, the flipping assembly includes a first fixing member, a second fixing member, a hinge, and a flipping oil cylinder; a hinge is installed between the sand protection cover and the fan cover, the first fixing member is fixedly connected to the upper surface of the sand protection cover, the second fixing member is fixedly connected to the upper surface of the fan cover, and the flipping oil cylinder is hingedly installed between the first fixing member and the second fixing member.

[0018] Preferably, a sand protection seal cover is hermetically installed at the air inlet on the front end face of the fan cover.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By setting the flipping assembly, the blowing air duct assembly, the rotating assembly, and the telescopic assembly, and cooperating with the lower air inlet grid structure and the filter screen, the present invention effectively intercepts large particle sand and filters fine sand, significantly reducing the risk of sand intrusion while ensuring the air intake volume; the rotating assembly realizes the horizontal turning of the blowing air duct assembly, and the telescopic assembly controls the vertical telescoping of the lower telescopic sleeve, ensuring airtightness during the adjustment process, expanding the purging range and reducing air leakage, and improving the sand blowing efficiency; the flipping assembly enables the sand protection cover to be flipped with one key to expose the engine, realizing quick maintenance without disassembly, and shortening the downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the sand protection cover;

[0023] Figure 3 is a schematic diagram of the structure of the fan cover;

[0024] Figure 4 is a schematic diagram of the structure of the blowing air duct assembly;

[0025] Figure 5 is a schematic diagram of the structure of the upper blowing air duct section;

[0026] Figure 6 is a schematic diagram of the structure of the upper telescopic sleeve;

[0027] Figure 7 is a schematic diagram of the structure of the lower telescopic sleeve;

[0028] Figure 8 is a schematic diagram of the structure of the blowing section.

[0029] In the figure:

[0030] 1. Sand guard; 2. Tipping cylinder; 5. Fan cover; 6. Fan; 7. Blowing air duct assembly; 8. Frame; 9. Engine; 10. Vehicle body; 14. First fixing piece; 15. Hinge; 16. Filter screen; 19. Second fixing piece; 20. Air outlet groove; 21. Sand-proof sealing cover; 22. Upper blowing air duct section; 23. Pressing plate; 24. Large gear; 25. Sliding sealing sleeve; 26. Upper telescopic sleeve; 27. Telescopic cylinder; 28. Telescopic guide sealing sleeve; 29. Lower telescopic sleeve; 30. Blowing section; 31. Wind direction adjusting plate; 32. Wind direction adjusting cylinder; 33. Guide rod; 34. Small gear; 35. Stepper motor; 36. Square flange; 37. Transition section; 38. First flange; 39. Motor fixing plate; 40. Second flange; 41. Upper guide sleeve; 43. Upper connecting ear; 44. Lower guide sleeve; 46. Lower connecting ear; 47. Connecting plate; 48. Third flange; 49. Fourth flange. Detailed implementation manners

[0031] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0032] Embodiment 1: As shown in the attached Figure 1 to the attached Figure 8 figures: The present invention provides a highly sealed telescopic sleeve type desert highway sand blower, including: a sand guard 1, a fan cover 5, a frame 8 and a vehicle body 10;

[0033] The frame 8 is fixedly installed on the upper surface of the vehicle body 10, the fan cover 5 and the engine 9 are installed on the upper surface of the frame 8, the sand guard 1 is hingedly installed on the top wall of one side of the fan cover 5, a tipping assembly is installed between the top surface of the sand guard 1 and the top surface of the fan cover 5, the tipping assembly controls the sand guard 1 to rotate along the hinge axis, and the sand guard 1 is located on the periphery of the engine 9; air inlets are arranged in an array on the front and rear end faces of the sand guard 1, the air inlets adopt a lower air inlet grille structure, and a filter screen 16 is connected to the inner wall of the air inlets; the tipping assembly is mainly used to realize the overall tipping of the sand guard 1 relative to the fan cover 5, and the sand guard 1 is tipped along the fan cover 5 through the tipping cylinder 2 to completely expose the engine 9, which is convenient for quick disassembly, assembly and maintenance of the engine 9; the air inlets of the sand guard 1 adopt a lower air inlet grille structure, combined with the inner wall filter screen 16, which can block large particle sand and filter fine sand to ensure clean intake air of the engine 9;

[0034] An air outlet groove 20 is opened on the other side wall of the fan cover 5, a fan 6 is installed in the air outlet groove 20, the output end of the fan 6 is connected with a blowing air duct assembly 7, and a sand-proof sealing cover 21 is hermetically installed at the air inlet of the front end face of the fan cover 5. The sand-proof sealing cover 21 mainly realizes the sealing at the air inlet of the fan 6 to prevent wind and sand from entering the engine 9 from the air inlets of the fan cover 5 and the fan 6, and avoid damaging the engine 9;

[0035] The blowing hair dryer assembly 7 includes an upper blowing hair dryer section 22, an upper telescopic sleeve 26, a lower telescopic sleeve 29, a blowing section 30, a rotating assembly, and a telescopic assembly. The upper blowing hair dryer section 22 is connected to the output end of the blower 6. The bottom end of the upper blowing hair dryer section 22 is rotatably installed with the upper telescopic sleeve 26. The lower telescopic sleeve 29 is limitedly sleeved on the peripheral side of the upper telescopic sleeve 26. The blowing section 30 is fixedly connected to the lower telescopic sleeve 29. The rotating assembly controls the rotation of the upper telescopic sleeve 26, and the telescopic assembly controls the telescoping of the lower telescopic sleeve 29.

[0036] The rotating assembly includes a stepper motor 35, a small gear 34, and a large gear 24. The large gear 24 is installed on the peripheral side of the upper telescopic sleeve 26. The stepper motor 35 is fixedly installed on the peripheral side of the upper blowing hair dryer section 22. The small gear 34 is installed on the output end of the stepper motor 35. The large gear 24 meshes with the small gear 34. The stepper motor 35 controls the rotation of the small gear 34, and the small gear 34 drives the large gear 24 to rotate, realizing the adjustment of the rotation angle of the upper telescopic sleeve 26 relative to the upper blowing hair dryer section 22.

[0037] The telescopic assembly includes an upper connecting ear 43, a lower connecting ear 46, and a telescopic oil cylinder 27. The upper connecting ear 43 is fixed on the peripheral side of the upper telescopic sleeve 26. The lower connecting ear 46 is fixed on the peripheral side of the lower telescopic sleeve 29. The tail of the telescopic oil cylinder 27 is rotatably installed at the upper connecting ear 43, and the telescopic end of the telescopic oil cylinder 27 is rotatably connected to the lower connecting ear 46.

[0038] The telescopic assembly further includes an upper guide sleeve 41, a lower guide sleeve 44, and a guide rod 33. Two groups of upper guide sleeves 41 are fixed on the peripheral side of the upper telescopic sleeve 26. Two groups of lower guide sleeves 44 are fixed on the peripheral side of the lower telescopic sleeve 29. The guide rod 33 is fixed on the inner wall of the upper guide sleeve 41, and the lower guide sleeve 44 is slidably matched with the guide rod 33.

[0039] The upper blowing hair dryer section 22 includes a square flange 36, a transition section 37, and a first flange 38. The square flange 36 is connected to the top of the transition section 37. The square flange 36 is fixedly connected to the air outlet end of the blower 6 by bolts. The first flange 38 is connected to the bottom of the transition section 37. A motor fixing plate 39 is fixedly connected to the side wall of the square flange 36, and the stepper motor 35 is installed at the motor fixing plate 39. A pressing plate 23 is installed above the large gear 24, and a sliding seal sleeve 25 is installed between the pressing plate 23 and the large gear 24. A telescopic guide seal sleeve 28 is provided at the connection between the upper telescopic sleeve 26 and the lower telescopic sleeve 29. The sliding seal sleeve 25 realizes the seal when the upper telescopic sleeve 26 rotates relative to the upper blowing hair dryer section 22. The telescopic guide seal sleeve 28 realizes the seal when the lower telescopic sleeve 29 telescopically guides up and down relative to the upper telescopic sleeve 26, ensuring no air leakage.

[0040] By adopting a highly sealed telescopic blowing air duct assembly 7, compared with the traditional folding air duct arrangement method, the height of the air outlet of the sand blower is intelligently adjusted, and the air leakage rate is lower, improving the blowing power of the sand blower under the same power device, and realizing the effective and rapid cleaning of the buried sand road surface on the desert highway.

[0041] A second flange 40 is fixedly connected to the top of the upper telescopic sleeve 26. The second flange 40 and the first flange 38 are fixedly connected by bolts. A third flange 48 is fixedly connected to the bottom of the lower telescopic sleeve 29. A fourth flange 49 is fixedly connected to the top of the blowing section 30. The third flange 48 and the fourth flange 49 are fixedly connected by bolts.

[0042] The flipping assembly includes a first fixing member 14, a second fixing member 19, a hinge 15 and a flipping oil cylinder 2. A hinge 15 is installed between the sand protection cover 1 and the fan cover 5. The first fixing member 14 is fixedly connected to the upper surface of the sand protection cover 1. The second fixing member 19 is fixedly connected to the upper surface of the fan cover 5. The flipping oil cylinder 2 is hingedly installed between the first fixing member 14 and the second fixing member 19.

[0043] The telescopic oil cylinder 27 is controlled by a remote controller to extend and retract, driving the lower telescopic sleeve 29 to move up and down along the guide rod 33 to adapt to the height requirements of different vehicle bodies 10. At the same time, the stepping motor 35 is remotely started, and the horizontal angle of the blowing section 30 is adjusted through the meshing transmission of the small gear 34 and the large gear 24. The wind direction adjusting oil cylinder 32 can further control the pitching angle of the air outlet of the blowing section 30. After the engine 9 is started, it drives the fan 6 to generate a high-speed air flow, which is directed to blow the sand and dust through the blowing air duct assembly 7. After the operation is completed, the lower telescopic sleeve 29 is retracted to increase the ground clearance, facilitating the rapid transfer of the vehicle body 10, or the telescopic amount is adjusted according to the sand layer thickness to achieve layered cleaning.

[0044] During maintenance operations, the flipping oil cylinder 2 is used to push the sand protection cover 1 to flip for maintenance. The sand protection cover 1 adopts a semi-covered lower air inlet grille and is used in cooperation with the filter screen 16, which can effectively block large particle sand and dust from entering the air inlet from the side, and further filter fine particle sand and dust, realizing the sand protection for the intake of the engine 9, enabling the sand blower to operate with strong power and low failure under desert highway conditions.

[0045] As can be seen from the above, before starting the desert highway sand blower, the operator first checks the stability of the vehicle body 10 and the frame 8, and confirms that the engine 9 and the fan 6 are in normal conditions.

[0046] During operation, the vehicle body 10 slowly travels along the road. The engine 9 drives the fan 6 to operate. The fan 6 inhales air through the sand protection seal cover 21, and after internal pressurization, outputs a high-speed air flow to the blowing air duct assembly 7 through the air outlet groove 20.

[0047] At this time, the sand guard 1 is in a closed state, and the air inlet grille-shaped structures and the filter net 16 below the front and rear end faces block sand and dust from entering the air inlet of the engine 9, while ensuring sufficient air intake.

[0048] When the blowing direction needs to be adjusted, the operator starts the stepper motor 35 to drive the pinion gear 34 to drive the large gear 24 to rotate, so that the upper telescopic sleeve 26 and the lower telescopic sleeve 29 rotate integrally around the axis of the upper blowing air cylinder section 22, thereby adjusting the horizontal angle of the blowing section 30; if the blowing height needs to be adjusted, the telescopic oil cylinder 27 pushes the lower telescopic sleeve 29 to slide up and down along the guide rod 33, and the telescopic movement is realized through the articulated movement of the upper connecting ear 43 and the lower connecting ear 46. The telescopic guide seal sleeve 28 ensures that there is no air leakage during the telescopic process. When the engine 9 needs to be maintained, the flipping oil cylinder 2 extends to push the sand guard 1 to flip upward around the hinge 15, completely exposing the engine 9. After the maintenance is completed, the oil cylinder retracts to reset.

[0049] Embodiment 2: As shown in the attached Figure 1 and the attached Figure 4 figures: This embodiment is basically the same as the previous embodiment, except that it further includes a wind direction adjustment component, which includes a wind direction adjustment plate 31, a wind direction adjustment oil cylinder 32 and a connecting plate 47; the connecting plate 47 is fixed to the periphery of the lower telescopic sleeve 29, the wind direction adjustment plate 31 is hinged to the outer top wall of the blowing section 30, and the wind direction adjustment oil cylinder 32 is hingedly installed between the connecting plate 47 and the wind direction adjustment plate 31.

[0050] As can be seen from the above, during operation, in addition to the horizontal rotation and telescopic functions, the operator can further control the extension and retraction of the wind direction adjustment oil cylinder 32: when the wind direction adjustment oil cylinder 32 extends, it pushes the wind direction adjustment plate 31 hinged to the top of the blowing section 30 to deflect downward, changing the pitch angle of the air outlet of the blowing section 30, so that the air flow impacts the sand pile at an inclined angle; conversely, when the oil cylinder retracts, the wind direction adjustment plate 31 resets, and the air flow resumes horizontal blowing.

[0051] When encountering a relatively high sand dune, the operator first extends the lower telescopic sleeve 29 to the maximum height through the telescopic oil cylinder 27, then starts the stepper motor 35 to rotate the blowing section 30 to a direction parallel to the sand dune, and finally adjusts the wind direction adjustment plate 31 so that the air flow impacts the top of the sand dune at a 45° elevation angle to achieve efficient sand cleaning.

[0052] After the operation is completed, all telescopic and rotating components are reset, the sand guard 1 is closed, and the filter net 16 can be detachably cleaned to maintain the ventilation efficiency.

[0053] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-sealing telescopic sleeve type desert highway sand blower, characterized in that, Including: A sand guard (1), a fan cover (5), a frame (8) and a vehicle body (10); The frame (8) is fixedly installed on the upper surface of the vehicle body (10). The fan cover (5) and the engine (9) are installed on the upper surface of the frame (8). One side top wall of the fan cover (5) is hingedly installed with the sand guard (1). A flipping assembly is installed between the top surface of the sand guard (1) and the top surface of the fan cover (5). The flipping assembly controls the sand guard (1) to rotate along the hinge axis. The sand guard (1) is located on the periphery of the engine (9). Air inlets are arranged in an array on the front and rear end faces of the sand guard (1). The air inlets adopt a downward air inlet grille structure. A filter screen (16) is connected to the inner wall of the air inlets; An air outlet groove (20) is opened on the other side wall of the fan cover (5). A fan (6) is installed in the air outlet groove (20). The output end of the fan (6) is connected with a blowing air duct assembly (7); The blowing air duct assembly (7) includes an upper blowing air duct section (22), an upper telescopic sleeve (26), a lower telescopic sleeve (29), a blowing section (30), a rotating assembly and a telescopic assembly. The upper blowing air duct section (22) is connected to the output end of the fan (6). The bottom end of the upper blowing air duct section (22) is rotatably installed with the upper telescopic sleeve (26). The lower telescopic sleeve (29) is limitedly sleeved on the periphery of the upper telescopic sleeve (26). The blowing section (30) is fixedly connected with the lower telescopic sleeve (29). The rotating assembly controls the rotation of the upper telescopic sleeve (26). The telescopic assembly controls the telescopic movement of the lower telescopic sleeve (29).

2. The high-sealing telescopic sleeve type desert highway sand blower according to claim 1, characterized in that: The rotating assembly includes a stepping motor (35), a small gear (34) and a large gear (24); The large gear (24) is installed on the periphery of the upper telescopic sleeve (26). The stepping motor (35) is fixedly installed on the periphery of the upper blowing air duct section (22). The small gear (34) is installed on the output end of the stepping motor (35). The large gear (24) meshes with the small gear (34).

3. The high-sealing telescopic sleeve type desert highway sand blower according to claim 2, characterized in that: The telescopic assembly includes an upper connecting ear (43), a lower connecting ear (46) and a telescopic oil cylinder (27); The upper connecting ear (43) is fixed on the periphery of the upper telescopic sleeve (26). The lower connecting ear (46) is fixed on the periphery of the lower telescopic sleeve (29). The tail of the telescopic oil cylinder (27) is rotatably installed at the upper connecting ear (43). The telescopic end of the telescopic oil cylinder (27) is rotatably connected to the lower connecting ear (46).

4. The high-sealing telescopic sleeve type desert highway sand blower according to claim 3, characterized in that: The telescopic assembly further includes an upper guide sleeve (41), a lower guide sleeve (44) and a guide rod (33). Two groups of the upper guide sleeves (41) are fixed on the periphery of the upper telescopic sleeve (26). Two groups of the lower guide sleeves (44) are fixed on the periphery of the lower telescopic sleeve (29). The guide rod (33) is fixed on the inner wall of the upper guide sleeve (41). The lower guide sleeve (44) is in sliding fit with the guide rod (33).

5. The high-sealing telescopic sleeve type desert highway sand blower according to claim 2, wherein: The upper blowing air duct section (22) includes a square flange (36), a transition section (37), and a first flange (38). The square flange (36) is connected to the top of the transition section (37). The square flange (36) is fixedly connected to the air outlet end of the fan (6). The first flange (38) is connected to the bottom of the transition section (37). A motor fixing plate (39) is fixedly connected to the side wall of the square flange (36), and a stepping motor (35) is installed at the motor fixing plate (39). Above the large gear (24), a pressing plate (23) is installed. A sliding seal sleeve (25) is installed between the pressing plate (23) and the large gear (24). An expansion guide seal sleeve (28) is provided at the connection between the upper expansion sleeve (26) and the lower expansion sleeve (29).

6. The high-sealing telescopic sleeve type desert highway sand blower according to claim 5, characterized in that: The top of the upper expansion sleeve (26) is fixedly connected to a second flange (40), and the second flange (40) is fixedly connected to the first flange (38). The bottom of the lower expansion sleeve (29) is fixedly connected to a third flange (48), and the top of the blowing section (30) is fixedly connected to a fourth flange (49). The third flange (48) is fixedly connected to the fourth flange (49).

7. The high-sealing telescopic sleeve type desert highway sand blower according to claim 1, characterized in that: It further includes a wind direction adjustment assembly, which includes a wind direction adjustment plate (31), a wind direction adjustment oil cylinder (32), and a connection plate (47). The connection plate (47) is fixed to the peripheral side of the lower expansion sleeve (29). The wind direction adjustment plate (31) is hinged to the outer top wall of the blowing section (30). A wind direction adjustment oil cylinder (32) is hingedly installed between the connection plate (47) and the wind direction adjustment plate (31).

8. The high-sealing telescopic sleeve type desert highway sand blower as described in claim 1, characterized in that: The flipping assembly includes a first fixing member (14), a second fixing member (19), a hinge (15), and a flipping oil cylinder (2). A hinge (15) is installed between the sand protection cover (1) and the fan cover (5). The first fixing member (14) is fixedly connected to the upper surface of the sand protection cover (1), and the second fixing member (19) is fixedly connected to the upper surface of the fan cover (5). A flipping oil cylinder (2) is hingedly installed between the first fixing member (14) and the second fixing member (19).

9. The high-sealing telescopic sleeve type desert highway sand blower according to claim 1, characterized in that: A sand protection seal cover (21) is hermetically installed at the air inlet of the front end face of the fan cover (5).

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