A disassembly type fan maintenance trolley

Abstract

The present application relates to the technical field of wind turbine maintenance equipment, and discloses a detachable wind turbine maintenance trolley, which includes two frames, a plurality of connecting rods are detachably connected between the two frames, a plurality of connecting plates are arranged on the frames, plug holes are provided on the connecting plates, both ends of the connecting rods are provided with plug sockets that are plugged with the connecting plates, plug blocks are plugged on the plug sockets, the plug blocks are plugged into the plug holes, a plurality of universal wheels are arranged at the bottom of the frame, and a front push rod and a rear push rod for fixing the wind turbine are arranged on the upper part of the frame. The present application has the effect of improving the versatility of the maintenance trolley.

Description

Technical Field

[0001] The present application relates to the field of fan maintenance equipment, and in particular to a detachable fan maintenance trolley. Background Art

[0002] At present, fan is the abbreviation for gas compression and gas transmission machinery. The commonly referred to fans include ventilators, blowers, and wind turbines. Gas compression and gas transmission machinery is a machine that converts the mechanical energy of rotation into gas pressure energy and kinetic energy and transmits the gas.

[0003] In the related art, a wind turbine maintenance trolley includes a trolley frame, a plurality of universal wheels are arranged at the bottom of the trolley frame, two first support tubes and two second support tubes are symmetrically arranged on the trolley frame, the first support tube and the second support tube are both lifted and lowered on the trolley frame, the first support tube is fixed to the side of the trolley frame close to the wind turbine, and a counterweight is arranged on the side of the trolley frame away from the wind turbine. The wind turbine is usually installed on a vertical wall or other plane. When in use, the maintenance trolley is placed against the wall, and the ends of the first support tube and the second support tube away from the trolley frame are connected to the wind turbine. The balance of the maintenance trolley is adjusted by the counterweight, and the maintenance trolley is pushed to insert the wind turbine into the installation position and fix it, thereby completing the installation of the wind turbine.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the existing maintenance cart is connected to the fan through the first support tube and the second support tube, so as to achieve the purpose of fixing the fan, and the installation height of the fan is adjusted by raising and lowering the height of the first support tube and the second support tube; during the use of the maintenance cart, fans of various types will be transported, and the dimensions of the fan structures of different types will change to a certain extent, which will cause the first support tube and the second support tube to be unable to align with the fan, affecting the connection between the fan and the first mounting rod and the second mounting rod. Therefore, the versatility of the maintenance cart is low and needs to be improved urgently. Summary of the invention

[0005] In order to improve the versatility of the maintenance cart, the present application provides a detachable fan maintenance cart.

[0006] The present application provides a disassembly type fan maintenance trolley adopts the following technical solution:

[0007] A detachable fan maintenance trolley comprises two frames, a plurality of connecting rods are detachably connected between the two frames, a plurality of connecting plates are arranged on the frames, plug holes are opened on the connecting plates, both ends of the connecting rods are provided with plug sockets which are plugged with the connecting plates, plug blocks are plugged on the plug sockets, and the plug blocks are plugged into the plug holes, a plurality of universal wheels are arranged at the bottom of the frames, and a front push rod and a rear push rod for fixing the fan are arranged on the upper lifting part of the frames.

[0008] By adopting the above technical scheme, when working, the staff connects the connecting rod with the two frames through the plug-in block, thereby realizing the assembly of the maintenance trolley, and the staff pushes the maintenance trolley toward the fan, and adjusts the height of the support seat and the connecting ear plate so that the support seat supports the fan, and the connecting ear plate is fixed on the fan, and then the fan is disassembled and moved by the maintenance trolley; since the weight of the fan is heavy, the fan can be better supported and fixed by the cooperation of the support seat and the connecting ear plate, so as to avoid the fan from overturning on the maintenance trolley and improve the stability of the fan fixation; using multiple connecting rods to connect the two frames together, on the one hand, the maintenance trolley can be detachable and the convenience of using the maintenance trolley can be improved, and on the other hand, the staff can connect the two frames by using connecting rods of different lengths, so that the maintenance trolley can be adapted to fans of various models and sizes, thereby improving the versatility of the maintenance trolley.

[0009] Preferably, the frame includes a first supporting tube, a second supporting tube and a tensioning tube arranged in a vertical direction, the first supporting tube and the second supporting tube are each connected to the tensioning tube by a plurality of first connecting tubes, a second connecting tube is connected between the first supporting tube and the second supporting tube, and the connecting plate is respectively fixed to the first supporting tube, the second supporting tube and the tensioning tube.

[0010] By adopting the above technical solution, a triangular structure can be formed by using the first connecting tube and the second connecting tube, so that the frame can be more stable, and the connection strength at the tensioning rod can be improved. When the connecting plate is fixed to the first support tube, the second support tube and the tensioning tube, the connecting plate can be fixed more firmly, thereby improving the connection strength between the two frames.

[0011] Preferably, a front push rod and a rear push rod are respectively inserted into the first support tube and the tensioning tube, the support seat is fixed to the top of the front push rod, the connecting ear plate is fixed to the top of the rear push rod, the top of the first support tube is rotatably connected to a front nut, the front nut is threadedly connected to the front push rod, and the top of the second support tube is rotatably connected to a rear nut, the rear nut is threadedly connected to the rear push rod.

[0012] By adopting the above technical solution, the front nut and the rear nut are rotatably connected to the first support tube and the tensioning tube respectively. The staff can realize the up and down sliding of the front push rod and the rear push rod by rotating the front nut and the rear nut, thereby improving the convenience of adjusting the height of the support seat and the height of the connecting ear plate.

[0013] Preferably, a counterweight block for balancing the weight of the fan is provided on the connecting rod.

[0014] By adopting the above technical solution, the weight of the fan can be balanced by using a counterweight block, so as to avoid the situation where the center of gravity of the fan and the maintenance cart is no longer inside the maintenance cart, reduce the overturning of the maintenance cart, and improve the stability of the maintenance cart.

[0015] Preferably, a bearing platform for fixing the counterweight block is provided on the connecting rod, a plug-in plate for plugging and cooperating with the connecting rod is provided at the bottom of the bearing platform, a plurality of fixing bolts are plugged into the bearing platform, and the fixing bolts are simultaneously arranged through the connecting rod.

[0016] By adopting the above technical solution, the plug-in plate is plugged into the connecting rod, and then fixed with bolts and locked, the bearing platform can be fixed more stably, thereby improving the stability of the counterweight block.

[0017] Preferably, a plurality of limit plates are provided on the bearing platform, and the limit plates are used to limit the movement of the counterweight block.

[0018] By adopting the above technical solution and using a limiting plate to limit the counterweight block, the counterweight block can be prevented from moving on the supporting platform, thereby improving the stability of the counterweight block.

[0019] Preferably, an extension tube is inserted into the second connecting tube, and a balance wheel is provided at one end of the extension tube away from the frame;

[0020] The outer wall of the extension tube is provided with a limiting block, and the outer wall of the second connecting tube is provided with a limiting hole along the sliding direction of the extension tube for limiting the sliding distance of the extension tube.

[0021] By adopting the above technical solution and using the extension tube in conjunction with the balance wheel, the extension tube can be moved in a direction away from the frame, so that the support point of the maintenance cart is away from the frame. This allows the center of gravity of the fan and the maintenance cart to fall more easily inside the maintenance cart, reducing the risk of the fan tipping over and improving the stability of the maintenance cart.

[0022] Preferably, a compression spring is provided in the second connecting tube, and the compression spring is used to drive the extension tube to move in a direction away from the frame.

[0023] By adopting the above technical solution, when the staff pushes the maintenance cart towards the fan, the extension tube will shrink towards the frame under the action of the wall fixing the fan, so that the support seat and the connecting ear plate can be better connected to the fan. When the staff pushes the cart to move, the extension tube will move away from the frame under the action of the compression spring, so that the extension tube can be automatically opened and closed, thereby improving the convenience of using the maintenance cart.

[0024] Preferably, the connecting rod is provided with a slide rail in a direction away from the fan, a slide seat for fixing the counterweight block is slidably provided on the slide rail, and a connecting structure for making the extension tube and the slide seat slide synchronously is connected between the slide seat and the limit block.

[0025] By adopting the above technical solution, the sliding rail is used in conjunction with the sliding seat to achieve the sliding of the counterweight block, and the connection between the extension tube and the sliding seat is achieved through a connecting device. When the extension tube is retracted in the second connecting tube, the sliding seat moves in a direction away from the frame, and part of the sliding seat is extended out of the maintenance trolley, so that the center of gravity of the fan and the maintenance trolley as a whole can be moved closer to the counterweight block, reducing the risk of the fan overturning on the maintenance trolley and improving the stability of the fan fixation; when the extension tube moves in a direction away from the frame, the sliding seat slides closer to the fan, so that the sliding seat is retracted in the maintenance trolley, avoiding the staff from bumping into the sliding seat, and improving the convenience of using the maintenance trolley.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] By using multiple connecting rods to connect the two racks together, on the one hand, the maintenance trolley can be detached, which improves the convenience of using the maintenance trolley. On the other hand, the staff can connect the two racks by using connecting rods of different lengths to change the size of the maintenance trolley, so that the maintenance trolley can adapt to a variety of wind turbines of different models and sizes, thereby improving the versatility of the maintenance trolley.

[0028] By using the first support tube, the second support tube and the tension tube to be vertically connected, and the first connecting tube and the second connecting tube to be horizontally connected, a triangular structure frame is formed, which can make the frame more stable, improve the connection strength at the tension rod, and make the connection ear plate more firmly fixed;

[0029] By synchronously moving the extension tube and the sliding seat, the sliding seat can move in the direction away from the frame when the extension tube is retracted in the second connecting tube, and the balance of the maintenance trolley is achieved through the counterweight block; when the extension tube moves in the direction away from the frame, the sliding seat slides toward the fan, thereby causing the sliding seat to retract into the maintenance trolley, and the balance of the maintenance trolley is achieved through the cooperation of the counterweight block and the extension tube; such a design not only allows the counterweight block to balance the weight of the fan to the greatest extent, but also allows the support point of the maintenance trolley to be away from the frame through the extension tube and the balance wheel when the maintenance trolley moves, thereby allowing the center of gravity of the fan and the maintenance trolley as a whole to fall better inside the maintenance trolley, thereby improving the stability of the maintenance trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a structural schematic diagram of a disassembly-type fan maintenance cart according to Example 1 of the present application.

[0031] Figure 2 It is a top view of a disassembly-type fan maintenance cart according to Example 1 of the present application.

[0032] Figure 3 It is a structural schematic diagram of a disassembly-type fan maintenance cart according to Example 2 of the present application.

[0033] Figure 4 It is a partial cross-section of a disassembly-type fan maintenance cart according to Example 2 of the present application.

[0034] 1. The yoke is provided with a plurality of locking cams, wherein the locking cams are provided with a plurality of locking cams and a plurality of locking cams. The plurality of locking cams are provided with a plurality of locking cams and a plurality of locking cams. The plurality of locking cams are provided with a plurality of locking cams and a plurality of locking cams. Implementation

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The embodiment of the present application discloses a detachable fan maintenance cart.

[0037] Embodiment 1:

[0038] Reference Figure 1 and Figure 2 A detachable fan maintenance trolley comprises two symmetrically arranged frames 1, a plurality of connecting rods 50 are connected between the two frames 1, the connecting rods 50 are seamless steel pipes, counterweights 40 for balancing the weight of the fan are fixed on the two connecting rods 50 away from the fan, the counterweights 40 are rectangular steel blocks, two universal wheels 7 are fixed at the bottom of the frame 1, the universal wheels 7 are heavy-duty universal wheels 7, a support plate 22 and a connecting ear plate 32 for fixed connection with the fan are connected to the upper part of the frame 1, and the two support plates 22 and the two connecting ear plates 32 are symmetrically arranged.

[0039] When the maintenance trolley is working, according to the size of the fan, a connecting rod 50 of appropriate length is selected, and two frames 1 are connected together through a plurality of connecting rods 50, and the support plate 22 and the connecting ear plate 32 are adjusted to a suitable height to connect with the fan, and then the fan is disassembled and carried by the maintenance trolley. In this way, by making connecting rods 50 of different lengths, the disassembly and maintenance of fans of different models and sizes can be realized, which enhances the convenience of the maintenance trolley and improves the versatility of the maintenance trolley.

[0040] The frame 1 includes a first support tube 10, a second support tube 12 and a tensioning tube 11 fixed in the vertical direction. The star wheel bolts are connected to the bottom of the first support tube 10 and the second support tube 12. The first support tube 10 and the second support tube 12 are both connected to the tensioning tube 11 with two first connecting tubes 13. Two second connecting tubes 14 are connected between the first support tube 10 and the second support tube 12. The first connecting tube 13 and the second connecting tube 14 are fixed horizontally, and the first connecting tube 13 and the second connecting tube 14 cooperate to form a triangular area with a stable structure, thereby improving the structural strength and stability of the frame 1. A connecting plate 51 is welded and fixed on the first support tube 10, the second support tube 12 and the tensioning tube 11. The connecting plate 51 is in a circular ring shape. A plurality of plug holes 52 are opened through the connecting plate 51 in the vertical direction. The plug holes 52 are opened in a circular array and are rectangular holes. Plug sockets 54 that are plugged with the connecting plate 51 are welded and fixed at both ends of the connecting rod 50. The plug sockets 54 are opened with mounting holes in the vertical direction. A plug block 53 is inserted in the mounting hole. The cross-section of the plug block 53 is T-shaped. The plug block 53 is inserted into the plug hole 52 at the same time.

[0041] A front push rod 21 and a rear push rod 31 are respectively inserted into the first support tube 10 and the tensioning tube 11, and the outer walls of the front push rod 21 and the rear push rod 31 are integrally formed with threaded sections. The support seat 22 is welded and fixed to the end of the front push rod 21 away from the frame 1, and the connecting ear plate 32 is welded and fixed to the end of the rear push rod 31 away from the frame 1. A rotating retaining ring is integrally formed on the top of the first support tube 10. The rotating retaining ring is in the shape of a circular ring, and a front nut 20 is clamped on the rotating retaining ring. The front nut 20 is rotatably set on the rotating retaining ring, and the front nut 20 is threadedly connected to the front push rod 21. A rotating retaining ring is integrally formed on the top of the second support tube 12. The rotating retaining ring is in the shape of a circular ring, and a rear nut 30 is clamped on the rotating retaining ring. The rear nut 30 is rotatably connected to the rotating retaining ring, and the rear nut 30 is threadedly connected to the rear push rod 31.

[0042] With such a design, the position of the support seat 22 is adjusted by cooperating with the front nut 20 and the front push rod 21, thereby supporting the fan. The position of the connecting ear plate 32 is adjusted by cooperating with the rear nut 30 and the rear push rod 31, thereby pulling the fan, preventing the fan from tipping over and improving the stability of the fan fixation.

[0043] A bearing platform 41 for mounting the counterweight 40 is fixed on two horizontally arranged connecting rods 50 away from the fan. The bearing platform 41 is a rectangular plate. A plurality of limit plates 42 are welded and fixed on the bearing platform 41. The limit plates 42 are L-shaped. The four limit plates 42 are respectively fixed at the four corners of the counterweight 40 to limit the movement of the counterweight 40 and improve the stability of the installation of the counterweight 40. A plurality of plug-in plates 43 plugged with the connecting rod 50 are welded and fixed at the bottom of the bearing platform 41. The plug-in plates 43 are U-shaped. A plurality of fixing bolts 44 are plugged on the bearing plate. The fixing bolts 44 are also set through the connecting rod 50.

[0044] The use of the limiting plate 42 to limit the counterweight block 40 can make it more convenient to install the counterweight block 40 and improve the convenience of using the counterweight block 40. The supporting platform 41 is fixed by the fixing bolts 44 and the plug-in plate 43 to improve the stability of the fixing of the supporting platform 41.

[0045] An anti-tipping chain 8 is fixed to the connecting rod 50 at one end away from the fan. The anti-tipping chain 8 is fixed to the fan to pull the fan, thereby preventing the fan base from shaking during movement, causing the fan to tip over on the maintenance cart, and improving the stability of the maintenance cart in fixing the fan.

[0046] The implementation principle of Example 1 is as follows: during operation, the staff uses different connecting rods 50 to assemble the two frames 1 together according to the different sizes of the fans. After the assembly is completed, the trolley is pushed into the lower part of the fan. The staff rotates the front nut 20 and the rear nut 30 to make the support seat 22 abut against the fan, so that the connecting ear plate 32 is fixed to the fan, and finally the anti-overturning chain 8 is fixed to the fan, so that the fan can be disassembled and moved by the maintenance trolley. The maintenance trolley made by this method can be connected with different connecting rods 50 according to different fan sizes, so as to achieve the versatility of the maintenance trolley. In combination with the frame 1 with a triangular structure, the maintenance trolley can support the fan more stably and improve the overall structural strength of the maintenance trolley.

[0047] Embodiment 2:

[0048] Reference Figure 3 and Figure 4, a detachable fan maintenance trolley, which is different from Example 1 in that an extension tube 61 is inserted into the second connecting tube 14, and the outer diameter of the extension tube 61 is the same as the inner diameter of the second connecting tube 14, so as to ensure that the extension tube 61 can slide more stably in the second connecting tube 14, and a balance wheel 60 is bolted to the end of the extension tube 61 away from the frame 1. A limit block 65 is welded and fixed on the outer wall of the extension tube 61, and the limit block 65 is a rectangular block. A limit hole 62 for limiting the sliding distance of the limit block 65 is opened on the outer wall of the second connecting tube 14 along the sliding direction of the extension tube 61. A compression spring 67 is fixed in the second connecting tube 14, and the compression spring 67 is used to drive the extension tube 61 to move in a direction away from the frame 1.

[0049] By adopting this method, the extension tube 61 can be automatically moved away from the frame 1, and in cooperation with the balancing wheel 60, the supporting point at the bottom of the maintenance trolley can be moved closer to the fan, so that the fan and the maintenance trolley are integrated.

[0050] The center of gravity can be better placed on the maintenance trolley, reducing the occurrence of the fan tipping over on the maintenance trolley and improving the stability of the maintenance trolley.

[0051] The connecting rod 50 is bolted to a slide rail 46 in a direction away from the fan. The slide rail 46 is in an I-shape. A sliding seat 45 for fixing the counterweight 40 is slidably provided on the slide rail 46. A connecting structure for making the extension tube 61 and the sliding seat 45 slide synchronously is connected between the sliding seat 45 and the limit block 65. The connecting structure includes a connecting rod 64 inserted into the limit block 65. The connecting rod 64 is a cylindrical rod. The top of the limit block 65 is threadedly connected with a locking bolt 63 for tightening and fixing the connecting rod 64. A connecting seat 66 is bolted to the sliding seat 45. The connecting seat 66 is a rectangular block. The connecting rod 64 passes through the connecting seat 66.

[0052] Such a design allows the extension tube 61 to be linked with the counterweight 40. When the extension tube 61 is retracted in the second connecting tube 14, the counterweight 40 can move away from the frame 1. A portion of the counterweight 40 is located outside the maintenance vehicle, making the counterweight 40.

[0053] The center of gravity moves greatly away from the fan, thereby better balancing the weight of the fan and improving the stability of the maintenance cart; when the extension tube 61 slides in the direction away from the frame 1, the counterweight block 40 moves in the direction close to the fan, thereby causing the sliding seat 45 to retract, thereby improving the convenience of using the maintenance cart.

[0054] The implementation principle of Example 2 is as follows: the difference from Example 1 is that, during operation, the staff pushes the maintenance cart to the bottom of the fan, and the extension tube 61, under the action of the wall used to fix the fan, will move toward the frame 1, thereby driving the counterweight block 40 to move away from the fan. After the fan is fixed, the staff pulls the maintenance cart, and under the action of the compression spring 67, the extension tube 61 moves away from the frame 1, and drives the counterweight block 40 into the maintenance cart, thereby realizing smooth movement of the fan. With such a design, the support point of the maintenance trolley can be moved away from the frame 1 through the cooperation of the extension tube 61 and the balance wheel 60, so that the center of gravity of the fan can be better placed in the maintenance trolley, thus avoiding the overturning of the maintenance trolley and improving the stability of the maintenance trolley. When realizing the linkage effect with the counterweight 40, when the extension tube 61 is retracted in the second connecting tube 14, in order to better balance the weight, part of the structure of the counterweight 40 is located outside the maintenance trolley, so that the counterweight 40 can be better moved away from the fan, thereby balancing the weight of the fan and improving the stability of the fan during installation. When the extension tube 61 slides, the counterweight 40 is retracted into the maintenance trolley, so that the sliding seat 45 can be better in contact with the slide rail 46, and the staff can avoid accidentally hitting the counterweight 40 when pulling the maintenance trolley, thereby improving the safety of using the maintenance trolley.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A detachable fan maintenance trolley, characterized in that: The invention comprises two frames (1), wherein a plurality of connecting rods (50) are detachably connected between the two frames (1), a plurality of connecting plates (51) are arranged on the frames (1), a plug-in hole (52) is provided on the connecting plates (51), both ends of the connecting rods (50) are provided with plug-in seats (54) plugged with the connecting plates (51), a plug-in block (53) is plugged into the plug-in hole (52), a plurality of universal wheels (7) are arranged at the bottom of the frames (1), and a support seat (22) and a connecting ear plate (32) for fixing a fan are arranged on the upper part of the frames (1) for lifting; The frame (1) comprises a first support tube (10), a second support tube (12) and a tension tube (11) arranged in a vertical direction; the first support tube (10) and the second support tube (12) are both connected to the tension tube (11) by a plurality of first connecting tubes (13); a second connecting tube (14) is connected between the first support tube (10) and the second support tube (12); and the connecting plate (51) is respectively fixed to the first support tube (10), the second support tube (12) and the tension tube (11); A front push rod (21) and a rear push rod (31) are respectively inserted into the first support tube (10) and the tension tube (11); the support seat (22) is fixed to the top of the front push rod (21); the connecting ear plate (32) is fixed to the top of the rear push rod (31); a front nut (20) is rotatably connected to the top of the first support tube (10); the front nut (20) is threadedly connected to the front push rod (21); a rear nut (30) is rotatably connected to the top of the second support tube (12); the rear nut (30) is threadedly connected to the rear push rod (31); The front nut (20) and the rear nut (30) are rotated to make the support seat (22) abut against the fan, so that the connecting ear plate (32) is fixed to the fan; the position of the support seat (22) is adjusted by cooperating with the front nut (20) and the front push rod (21) to support the fan, and the position of the connecting ear plate (32) is adjusted by cooperating with the rear nut (30) and the rear push rod (31) to pull the fan.

2. The detachable fan maintenance trolley according to claim 1 is characterized in that: The connecting rod (50) is provided with a counterweight (40) for balancing the weight of the fan.

3. The detachable fan maintenance trolley according to claim 2 is characterized in that: The connecting rod (50) is provided with a bearing platform (41) for fixing the counterweight (40), and the bottom of the bearing platform (41) is provided with a plug-in plate (43) plugged with the connecting rod (50), and a plurality of fixing bolts (44) are plugged into the bearing platform (41), and the fixing bolts (44) are also arranged to penetrate the connecting rod (50).

4. The detachable fan maintenance trolley according to claim 3 is characterized in that: A plurality of limit plates (42) are arranged on the bearing platform (41), and the limit plates (42) are used to limit the movement of the counterweight block (40).

5. The detachable fan maintenance trolley according to claim 2 is characterized in that: An extension tube (61) is inserted into the second connecting tube (14), and a balance wheel (60) is provided at one end of the extension tube (61) away from the frame (1); The outer wall of the extension tube (61) is provided with a limiting block (65), and the outer wall of the second connecting tube (14) is provided with a limiting hole (62) along the sliding direction of the extension tube (61) for limiting the sliding distance of the extension tube (61).

6. The detachable fan maintenance trolley according to claim 5, characterized in that: A compression spring (67) is arranged in the second connecting tube (14), and the compression spring (67) is used to drive the extension tube (61) to move in a direction away from the frame (1).

7. The detachable fan maintenance trolley according to claim 6, characterized in that: The connecting rod (50) is provided with a slide rail (46) in a direction away from the fan, a slide seat (45) for fixing the counterweight block (40) is slidably provided on the slide rail (46), and a connection structure for making the extension tube (61) and the slide seat (45) slide synchronously is connected between the slide seat (45) and the limit block (65).

8. The detachable fan maintenance trolley according to claim 7, characterized in that: The connection structure comprises a connecting rod (64) inserted into the limiting block (65); a locking bolt (63) for fixing the connecting rod (64) is threadedly connected to the limiting block (65); a connecting seat (66) is provided on the sliding seat (45); and the connecting rod (64) passes through the connecting seat (66).

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