Special maintenance tool suitable for gas turbine power plant and use method of special maintenance tool

Abstract

The invention discloses a special maintenance tool suitable for a gas turbine power plant and a using method thereof.The special maintenance tool comprises a maintenance base, a maintenance support is fixedly installed on one side of the maintenance base, a maintenance containing platform is fixedly installed on one side of the maintenance support, and a top frame is installed at the top of the maintenance base through a rotation adjusting assembly; the special maintenance tool suitable for the gas turbine power plant comprises a maintenance base, a top frame is arranged on the maintenance base, a hoisting tool is arranged on the top of the top frame, a working heat dissipation air blowing assembly is arranged on the maintenance placement platform, and a middle shaft is fixedly installed between the maintenance base and the maintenance placement platform. According to the hoisting device, equipment or parts needing to be overhauled can be hoisted through the hooks and placed on the overhauling placing platform, the position of the top frame can be adjusted through the arranged rotating adjusting assembly and operation of the servo motor, and therefore the equipment or the parts in different directions can be conveniently hoisted.

Description

Technical Field

[0001] This invention relates to the field of gas turbine power plant maintenance technology, and in particular to a special maintenance tool suitable for gas turbine power plants and its usage method. Background Technology

[0002] Gas turbine power plants, also known as gas turbine power plants, are essentially plants that use gas turbines to convert the chemical energy of fuel (mainly natural gas, but also diesel, syngas, etc.) into electrical energy. Unlike traditional coal-fired power plants (which use steam turbines), gas turbine power plants use high-temperature, high-pressure gas to directly drive a turbine, which in turn drives a generator to produce electricity. This is similar to the principle of jet engines in aviation. Therefore, the technology often involves both military and civilian applications. Gas turbine power plants are a key technology in modern power systems that combines high efficiency, cleanliness, and flexibility. They are not only the main force in replacing aging coal-fired power plants and reducing carbon emissions, but also an indispensable "stabilizer" and "regulator" in future high-proportion renewable energy grids.

[0003] Gas turbine power plants typically consist of numerous pieces of equipment and structures. During normal use, they are prone to malfunctions or require maintenance. This maintenance process necessitates the use of many tools, such as hoisting tools for lifting equipment and inspection tools for checking equipment functions. Traditionally, these tools are categorized and placed separately, requiring frequent relocation to retrieve them during maintenance. This causes significant inconvenience and difficulty. Therefore, a specialized maintenance tool suitable for gas turbine power plants is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a specialized maintenance tool suitable for gas turbine power plants, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A specialized maintenance tool for gas turbine power plants includes a maintenance base, a maintenance bracket fixedly mounted on one side of the maintenance base, a maintenance placement platform fixedly mounted on one side of the maintenance bracket, a top frame mounted on the top of the maintenance base via a rotation adjustment assembly, a hoisting tool mounted on the top of the top frame, a working cooling and blowing assembly mounted on the maintenance placement platform, a central shaft fixedly mounted between the maintenance base and the maintenance placement platform, a bottom placement plate and an upper placement plate rotatably sleeved on the central shaft, multiple partition plates fixedly mounted on both the bottom and upper placement plates, and a pull-out box mounted on the upper placement plate via a pull-out adjustment assembly.

[0006] Preferably, the rotation adjustment assembly includes a rotating shaft rotatably mounted on the top of the maintenance bracket, the top of the rotating shaft being fixedly connected to the bottom of the top frame, a mounting bracket being fixedly mounted on the bottom of the rotating shaft, a support wheel being rotatably mounted on the mounting bracket, and a top support platform being fixedly mounted on the maintenance bracket, with the support wheel in contact with the top of the top support platform.

[0007] Preferably, a servo motor is fixedly installed on the top of the top support platform, and a rotating gear is connected to the output end of the servo motor. A drive gear is fixedly installed on the bottom of the top frame. The drive gear is arranged in a ring structure, and the axis of the drive gear is consistent with the axis of the rotating shaft. The drive gear meshes with the rotating gear.

[0008] Preferably, the hoisting tool includes a hoisting motor fixedly installed on the top frame, the output end of the hoisting motor is connected to a winding roller, a hoisting rope is wound on the winding roller, one end of the hoisting rope is connected to a hook, and a wire through hole is opened on the top frame, through which one end of the hoisting rope can be movably passed.

[0009] Preferably, the working heat dissipation blowing assembly includes ventilation holes formed on the maintenance placement platform. The ventilation holes are located at the edge of the maintenance placement platform. An exhaust fan is fixedly installed on one side of the maintenance placement platform and is connected to the ventilation holes. Multiple air blowing holes are formed on the inner wall of the ventilation holes.

[0010] Preferably, the pull-out adjustment assembly includes a limiting groove formed on the upper placement plate, a limiting block fixedly installed at the bottom of the pull-out box, the limiting block being slidably installed in the limiting groove, and a pull-out handle fixedly installed on one side of the pull-out box.

[0011] Preferably, a disc is fixedly sleeved on the central shaft, and multiple positioning screw holes are opened on the disc. Positioning bolts are threaded on the positioning screw holes. A positioning screw groove is opened at the bottom of the maintenance placement platform, and one end of the positioning bolt is threaded into the positioning screw groove.

[0012] Preferably, an arc-shaped protective cover is fixedly installed between the maintenance base and the maintenance placement platform, and a pick-up and put-out hole is provided on one side of the arc-shaped protective cover.

[0013] A method for using a special maintenance tool for gas turbine power plants, the method comprising: Step 1: During operation of the gas turbine power plant, the hoisting motor is started, which drives the winding roller to rotate. The hoisting rope wound on the winding roller will extend, and the equipment or parts will be tied with the rope and then hung on the hook. The hoisting motor is then powered on in reverse to rewind the hoisting rope, lifting the equipment or parts and sending them to the maintenance and placement platform. During the hoisting process, if the hoisting position needs to be adjusted, the servo motor needs to be started to drive the rotating gear to rotate, which in turn drives the top frame to rotate around the rotation axis, thereby enabling the hook to be adjusted in position to meet the hoisting needs of equipment or parts in different positions. Step Two: After hoisting, tools are needed to inspect the equipment or parts. Rotate the positioning bolts. After one end of the positioning bolt disengages from the positioning screw groove, rotate the bottom or top placement plate. This will drive the central shaft to rotate. The partition plates divide the top and bottom placement plates into multiple areas for placing different tools. After the central shaft rotates, one end of the positioning bolt is threaded into the positioning screw groove, which fixes the position of the bottom placement plate after rotation. During maintenance, the pull-out box can be pulled out. The limit blocks and limit grooves limit the movement of the pull-out box, making it easier to place tools or parts after pulling out the box. Step 3: During the maintenance process, if the weather is hot, the exhaust fan will be turned on to generate a strong airflow that blows into the ventilation holes. The airflow will circulate quickly in the ventilation holes and be blown out from multiple air holes. There are air holes on all four sides of the maintenance platform, which can achieve airflow from all directions. The maintenance personnel will be blown by the airflow, thereby reducing the surrounding temperature and achieving a cooling effect, which will facilitate the maintenance personnel to carry out maintenance quickly.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the special maintenance tool for gas turbine power plants is equipped with a hoisting tool that can lift the equipment or parts to be maintained by hooks and place them on the maintenance platform. The rotation adjustment component, through the operation of a servo motor, can adjust the position of the top frame, thereby facilitating the hoisting of equipment or parts in different positions. In this invention, by setting a pull-out adjustment component, multiple partitioned areas are set on the bottom placement tray and the upper placement tray, which can realize different types of tool areas, making it convenient to place maintenance tools with different functions. The pull-out box can be pulled out, making it more convenient to place tools or parts. In this invention, the working heat dissipation blowing assembly generates airflow after the exhaust fan is running in a hot working environment, and blows air out from multiple air holes, which can dissipate heat around the maintenance platform and dissipate heat for maintenance personnel. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention in plan view; Figure 5 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the structure of the localized explosion of the present invention; Figure 7 This is a three-dimensional structural diagram of the pull-out box of the present invention, viewed from below. Figure 8 For the present invention Figure 2 A schematic diagram of the structure of part A.

[0016] In the diagram: 1. Inspection base; 2. Inspection bracket; 3. Inspection placement platform; 4. Rotating shaft; 5. Top frame; 6. Lifting motor; 7. Rewinding roller; 8. Lifting rope; 9. Hook; 10. Wire hole; 11. Top support platform; 12. Servo motor; 13. Rotating gear; 14. Drive gear; 15. Mounting bracket; 16. Support wheel; 17. Middle shaft; 18. Bottom placement tray; 19. Upper placement tray; 20. Divider plate; 21. Pull-out box; 22. Limiting groove; 23. Limiting block; 24. Pull-out handle; 25. Positioning screw hole; 26. Positioning bolt; 27. Positioning screw groove; 28. Arc-shaped protective cover; 29. ​​Pick-up and drop-out hole; 30. Ventilation hole; 31. Exhaust fan; 32. Air blower. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this patent based on the specific circumstances.

[0019] Example: Refer to Figure 1-8 A special maintenance tool for gas turbine power plants includes a maintenance base 1, a maintenance bracket 2 fixedly installed on one side of the maintenance base 1, a maintenance placement platform 3 fixedly installed on one side of the maintenance bracket 2, a top frame 5 installed on the top of the maintenance base 1 via a rotation adjustment assembly, a hoisting tool on the top of the top frame 5, a working heat dissipation blowing assembly on the maintenance placement platform 3, a central shaft 17 fixedly installed between the maintenance base 1 and the maintenance placement platform 3, a bottom placement plate 18 and an upper placement plate 19 rotatably sleeved on the central shaft 17, multiple partition plates 20 fixedly installed on both the bottom placement plate 18 and the upper placement plate 19, and a pull-out box 21 installed on the upper placement plate 19 via a pull-out adjustment assembly.

[0020] As a technical optimization of the present invention, the hoisting tool includes a hoisting motor 6 fixedly installed on the top frame 5. The output end of the hoisting motor 6 is connected to a winding roller 7, and a hoisting rope 8 is wound on the winding roller 7. One end of the hoisting rope 8 is connected to a hook 9. A wire through hole 10 is opened on the top frame 5, and one end of the hoisting rope 8 can be movably passed through the wire through hole 10. During the operation of the gas turbine power plant, malfunctions often occur, requiring maintenance or repair. During the maintenance or repair of the gas turbine power plant, the equipment or parts to be repaired need to be placed on the maintenance placement platform 3. The hoisting motor 6 is started to run, driving the winding roller 7 to rotate. The hoisting rope 8 wound on the winding roller 7 will extend, and the equipment or parts will be tied with the rope and then hung on the hook 9. The hoisting motor 6 is powered on again in the reverse direction, which can realize the winding of the hoisting rope 8, lift the equipment or parts, and send them to the maintenance placement platform 3.

[0021] As a technical optimization of the present invention, the rotation adjustment assembly includes a rotating shaft 4 rotatably mounted on the top of the maintenance bracket 2. The top of the rotating shaft 4 is fixedly connected to the bottom of the top frame 5. A mounting bracket 15 is fixedly mounted on the bottom of the rotating shaft 4. A support wheel 16 is rotatably mounted on the mounting bracket 15. A top support platform 11 is fixedly mounted on the maintenance bracket 2. The support wheel 16 contacts the top of the top support platform 11. A servo motor 12 is fixedly mounted on the top of the top support platform 11. A rotating gear 13 is connected to the output end of the servo motor 12. A driving gear 14 is fixedly mounted on the bottom of the top frame 5. The driving gear 14 is arranged in a ring structure. The axis of the driving gear 14 is consistent with the axis of the rotating shaft 4. The driving gear 14 meshes with the rotating gear 13. During the lifting process, if the lifting position needs to be adjusted, the servo motor 12 needs to be started to drive the rotating gear 13 to rotate, thereby driving the driving gear 14 to rotate. The top frame 5 will rotate around the rotating shaft 4, thereby driving the hook 9 to adjust its position, which can meet the lifting needs of equipment or parts in different positions.

[0022] As a technical optimization of the present invention, the pull-out adjustment assembly includes a limiting groove 22 on the upper placement plate 19, a limiting block 23 fixedly installed at the bottom of the pull-out box 21, the limiting block 23 slidingly installed in the limiting groove 22, a pull-out handle 24 fixedly installed on one side of the pull-out box 21, a disc fixedly sleeved on the central shaft 17, a plurality of positioning screw holes 25 opened on the disc, positioning bolts 26 threadedly installed on the positioning screw holes 25, a positioning screw groove 27 opened at the bottom of the maintenance placement platform 3, one end of the positioning bolt 26 threadedly installed in the positioning screw groove 27, an arc-shaped protective cover 28 fixedly installed between the maintenance base 1 and the maintenance placement platform 3, a pick-up and drop hole 29 provided on one side of the arc-shaped protective cover 28, after hoisting, tools are needed to inspect the equipment or parts, the positioning bolt 26 is rotated, one end of the positioning bolt 26 is disengaged from the positioning screw groove 27, and the bottom placement platform is rotated. The upper plate 18 or the upper placement plate 19 can drive the central shaft 17 to rotate. The partition plate 20 divides the upper placement plate 19 and the bottom placement plate 18 into multiple areas for placing different tools, such as a cleaning tool area, a repair tool area, a disassembled parts area, and other necessary areas. This allows for the classified placement of different tools, preventing misplacement or disorder during maintenance. The positioning bolt 26, after the central shaft 17 rotates, has one end threaded into the positioning screw groove 27, which fixes the position of the bottom placement plate 18 after rotation. During maintenance, the pull-out box 21 can be pulled out. The limiting block 23 and the limiting groove 22 limit the movement of the pull-out box 21, making it easier to place tools or parts after pulling out the pull-out box 21.

[0023] As a technical optimization of the present invention, the working heat dissipation blowing assembly includes ventilation holes 30 opened on the maintenance placement platform 3. The ventilation holes 30 are located at the edge of the maintenance placement platform 3. An exhaust fan 31 is fixedly installed on one side of the maintenance placement platform 3. The exhaust fan 31 is connected to the ventilation holes 30. Multiple air blowing holes 32 are opened on the inner wall of the ventilation holes 30. During the maintenance process, when encountering high temperatures, the temperature will be relatively high. At this time, the exhaust fan 31 is started to run, generating a strong air blowing towards the ventilation holes 30. The air blows quickly through the ventilation holes 30 and is blown out from the multiple air blowing holes 32. Air blowing holes 32 are provided around the maintenance placement platform 3, which can realize all-round air blowing. The maintenance personnel can be blown by the air, thereby reducing the surrounding temperature and achieving a cooling effect, which facilitates the maintenance personnel to carry out maintenance quickly.

[0024] A method for using a special maintenance tool for gas turbine power plants, the method comprising: Step 1: During operation of the gas turbine power plant, the hoisting motor 6 is started, which drives the winding roller 7 to rotate. The hoisting rope 8 wound on the winding roller 7 will extend, and the equipment or parts will be tied with the rope and then hung on the hook 9. The hoisting motor 6 is then powered on in the reverse direction to wind up the hoisting rope 8, which can lift the equipment or parts and send them to the maintenance and placement platform 3. During the hoisting process, if the hoisting position needs to be adjusted, the servo motor 12 needs to be started to drive the rotating gear 13 to rotate, which in turn drives the drive gear 14 to rotate. The top frame 5 will rotate around the rotating shaft 4, which can drive the hook 9 to adjust its position, so as to meet the hoisting of equipment or parts in different positions. Step 2: After hoisting, tools are needed to inspect the equipment or parts. Rotate the positioning bolt 26. After one end of the positioning bolt 26 is disengaged from the positioning screw groove 27, rotate the bottom placement plate 18 or the upper placement plate 19. This will drive the central shaft 17 to rotate. The partition plate 20 divides the upper placement plate 19 and the bottom placement plate 18 into multiple areas for placing different tools. After the central shaft 17 rotates, one end of the positioning bolt 26 is threaded into the positioning screw groove 27, which can fix the position of the bottom placement plate 18 after rotation. During the inspection process, the pull-out box 21 can be pulled out. The limit block 23 and the limit groove 22 can limit the movement of the pull-out box 21, making it easier to place tools or parts after pulling out the pull-out box 21. Step 3: During the maintenance process, if the weather is hot, the temperature will be relatively high. At this time, start the exhaust fan 31 to generate a strong airflow that blows towards the ventilation hole 30. The airflow circulates quickly in the ventilation hole 30 and is blown out from multiple air holes 32. Air holes 32 are set around the maintenance platform 3, which can realize airflow from all sides. The maintenance personnel can be blown by the airflow, thereby reducing the surrounding temperature and achieving a cooling effect, which facilitates the maintenance personnel to carry out maintenance quickly.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for the maintenance of a combustion engine power plant, comprising a maintenance base (1), characterized in that, The side of the overhaul base (1) is fixedly installed with an overhaul support (2), one side of the overhaul support (2) is fixedly installed with an overhaul placing platform (3), the top of the overhaul base (1) is installed with a top frame (5) through a rotating adjusting assembly, the top of the top frame (5) is provided with a hoisting tool, the overhaul placing platform (3) is provided with a working heat dissipation air blowing assembly, the overhaul base (1) and the overhaul placing platform (3) are fixedly installed with a middle shaft (17), the bottom placing disc (18) and the upper placing disc (19) are rotatably sleeved on the middle shaft (17), a plurality of partition plates (20) are fixedly installed on the bottom placing disc (18) and the upper placing disc (19), and the upper placing disc (19) is installed with a pull-out box (21) through a pull-out adjusting assembly.

2. A special-purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that The rotating adjusting assembly comprises a rotating shaft (4) rotatably installed at the top of the overhaul support (2), the top of the rotating shaft (4) is fixedly connected with the bottom of the top frame (5), the bottom of the rotating shaft (4) is fixedly installed with a mounting frame (15), and the mounting frame (15) is rotatably installed with a supporting wheel (16); the overhaul support (2) is fixedly installed with a top supporting platform (11), and the supporting wheel (16) is in contact with the top of the top supporting platform (11).

3. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 2, characterized in that The top of the top supporting platform (11) is fixedly installed with a servo motor (12), the output end of the servo motor (12) is connected with a rotating gear (13), the bottom of the top frame (5) is fixedly installed with a driving gear (14), the driving gear (14) is arranged in an annular structure, the axis of the driving gear (14) is consistent with the axis of the rotating shaft (4), and the driving gear (14) is engaged with the rotating gear (13).

4. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that The hoisting tool comprises a hoisting motor (6) fixedly installed on the top frame (5), the output end of the hoisting motor (6) is connected with a winding roller (7), the winding roller (7) is wound with a lifting rope (8), one end of the lifting rope (8) is connected with a hook (9), a wire through hole (10) is formed in the top frame (5), and one end of the lifting rope (8) is movably penetrated through the wire through hole (10).

5. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that The working heat dissipation air blowing assembly comprises a ventilation hole (30) formed in the overhaul placing platform (3), the ventilation hole (30) is arranged at the edge of the overhaul placing platform (3), one side of the overhaul placing platform (3) is fixedly installed with an air extractor (31), the air extractor (31) is in communication with the ventilation hole (30), and a plurality of air blowing holes (32) are formed in the inner wall of the ventilation hole (30).

6. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that The pull-out adjusting assembly comprises a limiting groove (22) formed in the upper placing disc (19), a limiting block (23) is fixedly installed at the bottom of the pull-out box (21), the limiting block (23) is slidably installed in the limiting groove (22), and one side of the pull-out box (21) is fixedly installed with a pull-out handle (24).

7. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that The middle shaft (17) is fixedly sleeved with a disc, a plurality of positioning screw holes (25) are formed in the disc, positioning bolts (26) are threadedly installed on the positioning screw holes (25), and the bottom of the maintenance placing platform (3) is provided with a positioning screw groove (27), one end of the positioning bolt (26) is threadedly installed in the positioning screw groove (27).

8. A special purpose tool for use in the maintenance of a combustion engine power plant according to claim 1, characterized in that, The arc-shaped protective cover (28) is fixedly installed between the maintenance base (1) and the maintenance placing platform (3), and one side of the arc-shaped protective cover (28) is provided with a taking and placing hole (29).

9. The use method of the maintenance tool special for the gas turbine power plant according to any one of claims 1-8, comprising: Step one: during the use of the gas turbine power plant, the hoisting motor (6) is started to run, the winding roller (7) is driven to rotate, the hoisting rope (8) wound on the winding roller (7) is elongated, the equipment or parts are bound with the rope, and then are hung on the hook (9), the hoisting motor (6) is reversed to run again, the winding of the hoisting rope (8) is realized, the equipment or parts are hoisted and sent to the maintenance placing platform (3), during the hoisting, the position of the hoisting needs to be adjusted, the servo motor (12) is started to run, the rotating gear (13) is driven to rotate, the belt gear (14) is driven to rotate, the top frame (5) rotates around the rotating shaft (4), the hook (9) is adjusted in the azimuth, and the equipment or parts in different azimuths can be hoisted; Step two: after the hoisting, the equipment or parts need to be maintained by using the tool, the positioning bolt (26) is rotated, one end of the positioning bolt (26) is separated from the positioning screw groove (27), the bottom placing disc (18) or the upper placing disc (19) is rotated, the middle shaft (17) is driven to rotate, the partition plate (20) is arranged, the upper placing disc (19) and the bottom placing disc (18) are divided into a plurality of areas and are used for placing different tools, the positioning bolt (26) is arranged, after one end of the positioning bolt (26) is threadedly installed in the positioning screw groove (27) after the middle shaft (17) rotates, the position of the bottom placing disc (18) after the rotation is fixed, during the maintenance, the pull-out box (21) can be pulled out, the limiting block (23) and the limiting groove (22) are arranged, the moving position of the pull-out box (21) is limited, and the tool or part is more conveniently placed after the pull-out box (21) is pulled out; Step three: during the maintenance, high temperature weather is encountered, the temperature is relatively high, at this time, the exhaust fan (31) is started to run, strong blowing is generated and is blown to the ventilation hole (30), the blowing is rapidly circulated in the ventilation hole (30) and is blown out from a plurality of blowing holes (32), the blowing holes (32) are arranged around the maintenance placing platform (3), the blowing around is realized, the maintenance worker is blown, the temperature around is reduced, the cooling effect is realized, and the maintenance personnel can quickly maintain.

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