Adjustable tamping equipment for power distribution civil engineering

Abstract

The invention relates to the technical field of building construction, and discloses power distribution civil engineering adjustable tamping equipment which comprises a push plate. The tamping assembly is used for tamping the soil; the adjusting assembly is used for adjusting the tamping force of the tamping assembly; the pressing plate is used for receiving centrifugal downward pressure generated by rotation of the tamping assembly to conduct contact type tamping on the soil; a rotating frame is arranged on the push plate and connected with the pressing plate. According to the adjustable tamping equipment for civil engineering, the centrifugal distance of the balance weight plate can be adjusted through the arranged adjusting assembly, then the centrifugal rotation downward pressure of the balance weight plate is adjusted, finally, the tamping force is controlled and adjusted, the adjusting part of the whole device is located at the position of the push rod, and an operator can conveniently conduct manual adjustment and control; and in addition, shutdown is not needed in the adjusting process, non-shutdown regulation and control can be conducted according to the condition of the compacted soil, the tedious step of multiple times of shutdown regulation and control is avoided, and the overall applicability of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution station construction, in particular to an adjustable compaction device for power distribution civil construction. Background Art

[0002] With the acceleration of urbanization and the continuous growth of electricity demand, the construction of distribution network has become an important part of urban infrastructure construction. Distribution civil engineering includes the construction of cable trenches, distribution room foundations, transformer foundations, etc. The construction quality of these projects is directly related to the safe and stable operation of power facilities. As an important part of civil engineering, compaction aims to ensure soil density, prevent foundation settlement, and improve the bearing capacity of the structure.

[0003] When compacting the foundation, the compaction strength requirements will change due to different soil types or different building designs. If different compaction machines are replaced due to different compaction requirements, the construction cost will increase. The more traditional compaction machines in the prior art use rotating centrifugal gravity and then use a pressure plate to compact the ground. However, the compaction strength of this technical solution is fixed. When encountering some address environments with different soils, it cannot be adjusted and needs to be replaced with different counterweight plates. However, the disassembly and assembly process is time-consuming and labor-intensive. Therefore, an adjustable compaction device for distribution civil engineering is proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an adjustable compaction device for power distribution civil engineering, which solves the problem that the compaction force of the compaction machine equipment in the prior art cannot be adjusted and the compaction force cannot be adjusted according to the actual soil conditions.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable compaction device for power distribution civil engineering, comprising a push plate; a compaction assembly for compacting the soil; an adjustment assembly for adjusting the compaction strength of the compaction assembly; a pressure plate for receiving the centrifugal downward force of the compaction assembly to perform contact compaction on the soil; a rotating frame is provided on the push plate, the rotating frame is connected to the pressure plate, and the compaction assembly is provided on the rotating frame.

[0008] Preferably, the compaction assembly includes a drive motor, which is mounted on a push plate, a rotating shaft is connected to the output shaft of the drive motor, a pulley one is connected to the rotating shaft, a pulley one is connected to a pulley two via a belt drive, a connecting shaft is connected to the center of pulley two, both ends of the connecting shaft are rotatably connected to a rotating frame, a square plate is connected to the connecting shaft, and a counterweight plate is connected to the square plate.

[0009] Preferably, the adjustment assembly includes a manual device and a moving device;

[0010] The manual device includes a rotating sleeve, one side of the rotating sleeve is connected to sprocket one, the surface of the sprocket one is connected to a double sprocket through a chain transmission, the double sprocket is rotatably connected to a rotating shaft, the double sprocket is connected to sprocket two through a chain transmission, the sprocket two is connected to a moving device, a push rod is rotatably connected to the rotating sleeve, and the push rod is installed on a push plate.

[0011] Preferably, the moving device includes an adjusting screw, one end of which is connected to sprocket two, a threaded sleeve is threadedly connected to the adjusting screw, a cylindrical rod is connected to the threaded sleeve, one end of the cylindrical rod passes through a rotating frame and is connected to a push sleeve, one side of the push sleeve is rotatably connected to a rotating seat, a support rod is connected to the rotating seat, and one end of the support rod is connected to a counterweight plate.

[0012] Preferably, a long groove is provided inside the counterweight plate, the square plate is slidably connected inside the long groove, and one end of the adjusting screw rod is connected to one end of the connecting shaft.

[0013] Preferably, the pressing plate includes two arc-shaped pressing plates, and a triangular pressing plate is slidably connected between the two arc-shaped pressing plates via a sliding groove, and the arc-shaped pressing plate and the triangular pressing plate are both connected to the rotating frame.

[0014] Preferably, the pressure plate is provided with a regulating device, which includes a support plate, the support plate is fixed on the triangular pressure plate, one side of the support plate is rotatably connected to an adjusting rod, the adjusting rod is threaded with a connecting sleeve, the support plate is connected to a sliding rod, the surface of the sliding rod is slidably connected to another connecting sleeve, and the connecting sleeve is rotatably connected to a rotating shaft.

[0015] Preferably, a revolving rod is connected to the bottom of the rotating frame, and the two arc-shaped pressing plates are slidably connected to the revolving rod through a connecting piece.

[0016] Preferably, the pressure plate is also provided with an absorption component, which is used to absorb dust splashed in the compacted soil; the absorption component includes an airflow box, a plurality of absorption holes are opened at the bottom of the airflow box, a hose is connected to the airflow box, one end of the hose is connected to a bellows, the bellows is installed on the push plate, the rotating shaft is connected to fan blades, and the fan blades are located inside the bellows, one side of the bellows is connected to a discharge box, and the discharge box passes through the push plate and is flush with the bottom surface of the push plate.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides an adjustable compaction device for power distribution civil construction, which has the following beneficial effects:

[0019] 1. The adjustable compaction equipment for power distribution civil engineering can adjust the centrifugal distance of the counterweight plate through the setting adjustment component, and then adjust the centrifugal rotation downward pressure of the counterweight plate, and finally realize the control and adjustment of the compaction strength. The adjustment part of the whole device is located at the position of the push rod, which can be convenient for the operator to manually adjust. There is no need to stop the machine during the adjustment process. It can be adjusted non-stop according to the compacted soil conditions, avoiding the tedious steps of multiple shutdowns and adjustments, and improving the overall applicability of the equipment.

[0020] 2. The adjustable compaction equipment for power distribution civil construction can achieve small adjustments to the compaction width of the pressure plate through the set control device, so as to cope with some soil pavements with inconsistent widths, thereby improving the overall applicability of the equipment from the side.

[0021] 3. The adjustable compaction equipment for power distribution civil construction can absorb the surrounding dust raised during the soil compaction process through the set absorption components, improve the working environment around the operator, and avoid excessive dust, which may cause physical injuries to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an adjustable compaction device for power distribution civil construction proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a compaction component and an adjustment component of an adjustable compaction device for power distribution civil engineering proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the rotating sleeve structure of an adjustable compaction equipment for power distribution civil construction proposed by the present invention;

[0025] Figure 4 A schematic diagram of the structure of a mobile device of an adjustable compaction equipment for power distribution civil construction proposed by the present invention;

[0026] Figure 5A schematic diagram of the structure of a pressure plate of an adjustable compaction device for power distribution civil construction proposed by the present invention;

[0027] Figure 6 A schematic diagram of the structure of a control device for an adjustable compaction device for power distribution civil construction proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of an absorption component of an adjustable compaction device for power distribution civil construction proposed by the present invention.

[0029] In the figure: 1, push plate; 2, tamping assembly; 201, drive motor; 202, rotating shaft; 203, pulley 1; 204, pulley 2; 205, counterweight plate; 206, connecting shaft; 207, block plate; 3, adjustment assembly; 301, rotating sleeve; 302, sprocket 1; 303, double sprocket; 304, sprocket 2; 305, adjustment screw; 306, push sleeve; 307, support rod; 308, cylindrical rod ; 309, rotating seat; 310, threaded sleeve; 311, limit plate; 4, pressure plate; 401, adjusting rod; 402, connecting sleeve; 403, sliding rod; 404, support plate; 405, triangular pressure plate; 406, arc pressure plate; 407, return rod; 5, absorption component; 501, air flow box; 502, absorption hole; 503, hose; 504, bellows; 505, discharge box; 6, push rod; 7, rotating frame. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 7 , an adjustable compaction device for power distribution civil engineering, comprising a push plate 1; a rotating frame 7 is arranged on the push plate 1, the rotating frame 7 is connected to the pressing plate 4, and a compaction component 2 is arranged on the rotating frame 7.

[0032] In this embodiment, the compaction assembly 2 is used to compact the soil;

[0033] See also Figure 2The compaction assembly 2 includes a driving motor 201, which is mounted on the push plate 1. The output shaft of the driving motor 201 is connected to a rotating shaft 202, and the rotating shaft 202 is connected to a pulley 1 203. The pulley 1 203 is connected to a pulley 2 204 through a belt drive. The center of the pulley 204 is connected to a connecting shaft 206. Both ends of the connecting shaft 206 are rotatably connected to the rotating frame 7. The connecting shaft 206 is connected to a block plate 207, and the block plate 207 is connected to a counterweight plate 205. The motor will drive the rotation of the rotating shaft 202, and then drive the pulley 203 to rotate. Through the transmission between the belts, the connecting shaft 206 will be driven to rotate. The connecting shaft 206 will drive the counterweight plate 205 on the block plate 207 to rotate. The centrifugal distance between the counterweight plate 205 and the connecting shaft 206 is used to generate centrifugal force, so that after the counterweight plate 205 rotates one circle, there will be a downward pressure, which is finally transmitted to the pressing plate 4, and then the pressing plate 4 is used to compact the fluffy soil.

[0034] In this embodiment, the adjusting component 3 is used to adjust the tamping strength of the tamping component 2; the adjusting component 3 includes a manual device and a moving device;

[0035] See also Figure 2-Figure 3 The manual device includes a rotating sleeve 301, one side of the rotating sleeve 301 is connected to a sprocket 1 302, the surface of the sprocket 1 302 is connected to a double sprocket 303 through a chain transmission, the double sprocket 303 is rotatably connected to the rotating shaft 202, the double sprocket 303 is connected to a sprocket 2 304 through a chain transmission, the sprocket 2 304 is connected to the moving device, the rotating sleeve 301 is rotatably connected to a push rod 6, the push rod 6 is mounted on the push plate 1, and the rotating sleeve 301 on the push rod 6 is rotated, thereby driving the sprocket 1 302 to rotate, and through the transmission of the chain and sprocket, driving the rotation of the adjusting screw rod 305, the manual device is set at a place close to the hand of the equipment, so that the operator can make real-time adjustments and facilitate the subsequent tamping force adjustment.

[0036] For further information, see Figure 2 and Figure 4The moving device includes an adjusting screw rod 305, one end of which is connected to the sprocket wheel 304, a threaded sleeve 310 is threadedly connected to the adjusting screw rod 305, a cylindrical rod 308 is connected to the threaded sleeve 310, one end of the cylindrical rod 308 passes through the rotating frame 7 and is connected to a push sleeve 306, one side of the push sleeve 306 is rotatably connected to a rotating seat 309, a support rod 307 is connected to the rotating seat 309, and one end of the support rod 307 is connected to the counterweight plate 205. The transmission of the chain and sprocket drives the rotation of the adjusting screw rod 305, and the threaded sleeve 310 on its surface will move laterally through the threaded connection, and the lateral movement of the threaded sleeve 310 will push the push sleeve 306 to move laterally through the cylindrical rod 308, thereby driving the rotating seat 309 to move laterally on the connecting shaft 206. As the rotating seat 309 moves laterally, the angle of the support rod 307 is pushed to change, and then the counterweight plate 205 is pulled up, and finally the centrifugal distance between the counterweight plate 205 and the connecting shaft 206 is controlled. Therefore, the entire equipment realizes the regulation of the tamping force, and the device can be carried out without stopping the equipment. Therefore, when the operator is using it, if he finds that the tamping force in the area is large or small, he can adjust it in real time without disassembling the counterweight plate 205. It is convenient, fast and reliable.

[0037] For further information, see Figure 4 The counterweight plate 205 has a long groove inside, and the square plate 207 is slidably connected inside the long groove. One end of the adjusting screw rod 305 is connected to one end of the connecting shaft 206. The purpose of setting the square plate 207 is that when the connecting shaft 206 rotates, the counterweight plate 205 can be driven to rotate due to its squareness, thereby generating a rotating centrifugal tamping force to achieve soil compaction. The purpose of the long groove is to adjust the centrifugal distance of the counterweight plate 205, so that the subsequent adjustment of the tamping force can have a certain adjustment space.

[0038] Also, see Figure 5 The pressing plate 4 is used to receive the centrifugal downward force of the rotating compaction assembly 2 to perform contact compaction on the soil; the pressing plate 4 includes two arc pressing plates 406, and a triangular pressing plate 405 is slidably connected between the two arc pressing plates 406 through a slide groove, and the arc pressing plate 406 and the triangular pressing plate 405 are both connected to the rotating frame 7. The entire pressing plate 4 is divided into three parts for easy replacement and disassembly at a later stage.

[0039] In addition, see Figure 6The pressure plate 4 is provided with a regulating device, which includes a support plate 404, which is fixed on the triangular pressure plate 405, and an adjusting rod 401 is rotatably connected to one side of the support plate 404, and a connecting sleeve 402 is threadedly connected to the adjusting rod 401, and a sliding rod 403 is connected to the support plate 404, and another connecting sleeve 402 is slidably connected to the surface of the sliding rod 403, and the connecting sleeve 402 is rotatably connected to the rotating shaft 202. When the operator needs to adjust the compaction width, the adjusting rod 401 can be rotated, and through the relationship of the threaded connection, the support plate 404 and the triangular pressure plate 405 will be pushed forward, and at this time, the arc pressure plates 406 on both sides will be expanded outward by the slide groove, and the return rod 407 directly limits the arc pressure plate 406 to only move horizontally, so as the triangular pressure plate 405 moves forward, the two arc pressure plates 406 will be driven to move horizontally, thereby realizing the width regulation of the pressure plate 4, and improving the overall applicability of the equipment.

[0040] It is worth noting that see Figure 6 The bottom of the rotating frame 7 is connected with a retractable rod 407, and two arc-shaped pressing plates 406 are slidably connected to the retractable rod 407 through a connecting piece. The retractable rod 407 can limit the two arc-shaped pressing plates 406 to only slide horizontally, thereby realizing the contraction of the width.

[0041] It is worth mentioning that an absorption component 5 is also provided on the pressing plate 4, and the absorption component 5 is used to absorb the dust splashed during the compaction of the soil; considering that the soil will raise too much dust during the compaction process, which will cause physical discomfort to the operator, the absorption component 5 is provided to absorb the raised dust.

[0042] See also Figure 7 The absorption assembly 5 includes an airflow box 501, a plurality of absorption holes 502 are provided at the bottom of the airflow box 501, a hose 503 is connected to the airflow box 501, one end of the hose 503 is connected to a bellows 504, the bellows 504 is mounted on the push plate 1, a fan blade is connected to the rotating shaft 202, and the fan blade is located inside the bellows 504, and a discharge box 505 is connected to one side of the bellows 504, and the discharge box 505 passes through the push plate 1 and is flush with the bottom surface of the push plate 1. The fan blades on the rotating shaft 202 rotate, and then the fan blades rotate inside the bellows 504, generating negative pressure suction, at this time, the dust raised will enter the inside of the airflow box 501 from the position of the plurality of absorption holes 502, and then be transferred to the inside of the bellows 504 through the hose 503, and finally be discharged from the outlet of the discharge box 505, and the discharge outlet is located below the push plate 1, and through the downward pressure of the push plate 1, the dust and soil will be scattered on the pressed road surface and compensated on the soil again. In the actual process, the operator can also install a water tank on the device and use the water spray from the water tank to reduce the dust.

[0043] Working principle, first you need to start the drive motor 201, the motor will drive the rotation of the rotating shaft 202, and then drive the rotation of the pulley 203, through the transmission between the belts, it will drive the rotation of the connecting shaft 206, the connecting shaft 206 will drive the counterweight plate 205 on the block plate 207 to rotate, and the centrifugal distance between the counterweight plate 205 and the connecting shaft 206 is used to generate centrifugal force, so that after the counterweight plate 205 rotates one circle, there will be a downward pressure, which is finally transmitted to the pressing plate 4, and then the pressing plate 4 is used to compact the fluffy soil. This technical solution takes into account that the centrifugal distance of the traditional technical solution is fixed and cannot be adjusted, so an adjustment component is set to adjust the centrifugal distance. At this time, the operator needs to rotate the rotating sleeve 301 on the push rod 6, thereby driving the sprocket 302 to rotate, and through the transmission of the chain and the sprocket, the adjustment screw 305 is driven to rotate, and the threaded sleeve 310 on its surface will move laterally through the threaded connection, and the lateral movement of the threaded sleeve 310 will push the push sleeve 306 to move laterally through the cylindrical rod 308, thereby driving the rotating seat 309 to move laterally on the connecting shaft 206. At this time, the counterweight plate 205 is affected by the limit plate 311 The restriction will cause up and down sliding, that is, the long groove inside the counterweight plate 205 and the square plate 207 will slide, and with the lateral movement of the rotating seat 309, the angle of the support rod 307 will change, which is similar to pushing the counterweight plate 205 to be pulled up, and finally controlling the centrifugal distance between the counterweight plate 205 and the connecting shaft 206, so the whole equipment can realize the regulation of the tamping force, and the device can be operated without stopping the equipment, so when the operator is using it, if he finds that the tamping force in the area is large or small, he can adjust it in real time without disassembling the counterweight plate 205, which is convenient, fast and reliable. At the same time, considering that the width of the compacting plate in the prior art is also uncontrollable, the device divides the pressing plate 4 into three plate bodies. When the operator needs to adjust the compacting width, he can rotate the adjusting rod 401, which will push the support plate 404 and the triangular pressing plate 405 forward through the threaded connection. At this time, the arc pressing plates 406 on both sides will be expanded outward by the slide groove, and the return rod 407 directly limits the arc pressing plate 406 to only move horizontally. Therefore, as the triangular pressing plate 405 moves forward, the two arc pressing plates 406 will be driven to move horizontally, thereby realizing the width control of the pressing plate 4. In this way, the road sections with different widths in different regions can be regulated and compacted.At the same time, considering that too much dust will be raised during the compaction process, which will cause physical discomfort to the operator, an absorption component 5 is set to absorb the raised dust. Because the rotating shaft 202 is constantly rotating at this time, it will drive the fan blades on the rotating shaft 202 to rotate, and then the fan blades rotate inside the bellows 504 to generate negative pressure suction, and the suction will be transmitted to the inside of the airflow box 501 through the hose 503. At this time, the raised dust will enter the inside of the airflow box 501 from the positions of multiple absorption holes 502, and then be transmitted to the inside of the bellows 504 through the hose 503, and finally be discharged from the outlet of the discharge box 505. The discharge outlet is located below the push plate 1. Through the downward pressure of the push plate 1, the dust and soil will be scattered on the pressed road surface and compensated on the soil again.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An adjustable compaction device for power distribution civil construction, characterized in that: include, Push plate (1); A compacting assembly (2), used for compacting the soil; An adjusting component (3) for adjusting the compaction strength of the compacting component (2); A pressing plate (4) is used to receive the centrifugal downward force of the rotating compacting assembly (2) to perform contact compaction on the soil; A rotating frame (7) is arranged on the push plate (1), the rotating frame (7) is connected to the pressing plate (4), and the tamping assembly (2) is arranged on the rotating frame (7).

2. The adjustable compaction equipment for power distribution civil construction according to claim 1, characterized in that: The compacting assembly (2) comprises a driving motor (201), the driving motor (201) is mounted on the push plate (1), the output shaft of the driving motor (201) is connected to a rotating shaft (202), the rotating shaft (202) is connected to a pulley 1 (203), the pulley 1 (203) is connected to a pulley 2 (204) via a belt drive, the center of the pulley 2 (204) is connected to a connecting shaft (206), both ends of the connecting shaft (206) are rotatably connected to a rotating frame (7), the connecting shaft (206) is connected to a block plate (207), and the block plate (207) is connected to a counterweight plate (205).

3. The adjustable compaction equipment for power distribution civil construction according to claim 2, characterized in that: The adjustment component (3) comprises a manual device and a moving device; The manual device comprises a rotating sleeve (301), one side of the rotating sleeve (301) is connected to a sprocket wheel one (302), the surface of the sprocket wheel one (302) is connected to a double sprocket wheel (303) via a chain transmission, the double sprocket wheel (303) is rotatably connected to a rotating shaft (202), the double sprocket wheel (303) is connected to a sprocket wheel two (304) via a chain transmission, the sprocket wheel two (304) is connected to a moving device, and a push rod (6) is rotatably connected to the rotating sleeve (301), and the push rod (6) is installed on a push plate (1).

4. The adjustable compaction equipment for power distribution civil construction according to claim 3, characterized in that: The moving device comprises an adjusting screw rod (305), one end of which is connected to the second sprocket wheel (304), a threaded sleeve (310) being threadedly connected to the adjusting screw rod (305), a cylindrical rod (308) being connected to the threaded sleeve (310), one end of which passes through the rotating frame (7) and is connected to a push sleeve (306), one side of which is rotatably connected to a rotating seat (309), a supporting rod (307) being connected to the rotating seat (309), one end of which is connected to the counterweight plate (205), and a limiting plate (311) being connected to the connecting shaft (206).

5. The adjustable compaction equipment for power distribution civil construction according to claim 4, characterized in that: The counterweight plate (205) is provided with a long groove inside, the block plate (207) is slidably connected inside the long groove, and one end of the adjusting screw rod (305) is connected to one end of the connecting shaft (206).

6. The adjustable compaction equipment for power distribution civil construction according to claim 5, characterized in that: The pressing plate (4) comprises two arc-shaped pressing plates (406), and a triangular pressing plate (405) is slidably connected between the two arc-shaped pressing plates (406) via a sliding groove, and the arc-shaped pressing plate (406) and the triangular pressing plate (405) are both connected to the rotating frame (7).

7. The adjustable compaction equipment for power distribution civil construction according to claim 6, characterized in that: The pressure plate (4) is provided with a regulating device, which includes a support plate (404), the support plate (404) is fixed on the triangular pressure plate (405), one side of the support plate (404) is rotatably connected to an adjusting rod (401), a connecting sleeve (402) is threadedly connected to the adjusting rod (401), a sliding rod (403) is connected to the support plate (404), the surface of the sliding rod (403) is slidably connected to another connecting sleeve (402), and the connecting sleeve (402) is rotatably connected to the rotating shaft (202).

8. The adjustable compaction equipment for power distribution civil construction according to claim 7, characterized in that: The bottom of the rotating frame (7) is connected to a revolving rod (407), and the two arc-shaped pressing plates (406) are slidably connected to the revolving rod (407) via a connecting piece.

9. The adjustable compaction equipment for power distribution civil construction according to claim 7, characterized in that: The pressing plate (4) is also provided with an absorption component (5), and the absorption component (5) is used to absorb dust splashed during compacting of soil; The absorption assembly (5) comprises an airflow box (501), a plurality of absorption holes (502) are provided at the bottom of the airflow box (501), a hose (503) is connected to the airflow box (501), one end of the hose (503) is connected to a bellows (504), the bellows (504) is mounted on the push plate (1), a fan blade is connected to the rotating shaft (202), and the fan blade is located inside the bellows (504), a discharge box (505) is connected to one side of the bellows (504), and the discharge box (505) passes through the push plate (1) and is flush with the bottom surface of the push plate (1).

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