Dragging device for transformer of wind driven generator

Abstract

The utility model belongs to the technical field of operation and maintenance of wind driven generators, and relates to a dragging device for a transformer of a wind driven generator, which is arranged at a cabin door of a wind power tower drum and comprises a track platform and a rectangular framework formed by welding section steel, the top surface of the track platform is horizontally arranged; the dragging mechanism comprises a moving frame, a push-pull acting cylinder and a clamping frame, the push-pull acting cylinder is arranged on the center line of the track platform in the length direction of the track platform, the bottom of the push-pull acting cylinder is installed on the clamping frame, and the clamping frame is connected with the transformer; a piston rod end of the push-pull acting cylinder is connected with a movable frame; two ends of the movable frame slide on the top surface of the track platform; and the locking assembly can lock and unlock the position of the movable frame on the top surface of the track platform. The device is directly installed at the cabin door of the tower drum, and the transformer is pulled out of or pushed back to the wind power tower drum in a pulling and pushing mode.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine operation and maintenance technology, and in particular to a wind turbine transformer towing device. Background Technology

[0002] Wind power is a clean and renewable energy source that has seen widespread application and development in recent years. Transformers are a key component of wind power systems, used for voltage conversion and circuit isolation. They typically convert the generator's 690V output to 10kV high voltage before transmitting it to the wind farm. Transformers ensure the stable operation of the wind power system. Equipment failures are unavoidable. The transformer is located on an inner platform at the bottom of the tower, and it is usually lifted out of the tower through a hatch on the top or side of the tower. Compared to the main control cabinet or frequency converter cabinet, the transformer cabinet contains iron cores and coils, making it much heavier and larger, and transporting it is very difficult.

[0003] Currently, removing a transformer requiring repair from the top of the tower or hatch requires a specialized crane or custom-made lifting equipment. The existing procedure involves lifting, moving, and lowering the transformer. Due to space constraints within the tower, the lifted transformer may sway and collide with the tower, potentially damaging it. This hoisting operation is extremely cumbersome. After repair, the transformer needs to be transported back into the tower, requiring another round of complex operations, resulting in low efficiency and high operating costs.

[0004] To overcome the above problems, a wind turbine transformer towing device is needed. Utility Model Content

[0005] The purpose of this utility model is to provide a wind turbine transformer towing device, which is directly installed at the hatch of the tower and uses pulling and pushing methods to pull the transformer out or push it back into the wind turbine tower.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a wind turbine transformer towing device, installed at the cabin door of the wind turbine tower, comprising:

[0008] The track platform adopts a rectangular frame welded from steel sections. The top surface of the track platform is the moving track surface for the transformer's entry and exit hatch, and the top surface of the track platform is horizontally set.

[0009] The dragging mechanism comprises a moving frame, a push-pull cylinder and a clamping frame, the push-pull cylinder is arranged on the central line along the length direction of the track platform, the bottom of the push-pull cylinder is mounted on the clamping frame, and the clamping frame is connected to the transformer; the piston rod end of the push-pull cylinder is connected to the moving frame, and the both ends of the moving frame slide on the top surface of the track platform.

[0010] The locking assembly can lock and unlock the position of the moving frame on the top surface of the track platform.

[0011] Further, the top surface of the track platform is provided with a wear plate, and the moving frame and the transformer slide on the wear plate.

[0012] Further, the top surface of the track platform and the wear plate are provided with lower pin shaft holes, and a plurality of lower pin shaft holes are arranged at equal intervals on the long side of the track platform; two sets of locking assemblies are arranged at the both ends of the moving frame, the locking assembly comprises a cylinder support, a pin cylinder and a pin, the pin cylinder is mounted to the end of the moving frame through the cylinder support, the vertically downward piston rod of the pin cylinder is mounted with the pin, and the pin can be inserted into the lower pin shaft hole.

[0013] Further, the end of the moving frame is provided with an upper pin shaft hole, and the pin is first inserted into the upper pin shaft hole and then inserted into the lower pin shaft hole to form locking.

[0014] Further, the piston rod end of the pin cylinder is provided with a floating joint, the top threaded hole of the floating joint is connected to the piston rod end screw rod of the pin cylinder, the bottom end of the floating joint is coaxially provided with a screw rod segment, the screw rod segment is screwed into the threaded hole of the pin head, a lock nut is screwed onto the screw rod segment, and the lock nut is tightly attached to the top surface of the pin head.

[0015] Further, the side of the clamping frame facing the transformer is provided with a clamping beam perpendicular to the long side of the track platform, and the clamping beam clamps the shell base of the transformer through bolts and U-shaped clamps.

[0016] Further, the side of the moving frame facing the push-pull cylinder is centrally provided with an ear seat, and the piston rod end of the push-pull cylinder is provided with a fish eye joint which is hinged in the ear seat.

[0017] Further, the both ends of the moving frame are provided with identification pits, and the track platform is provided with identification lines outside the lower pin shaft holes, when the identification pits are aligned with the identification lines, the pin can be inserted into the upper pin shaft hole and the lower pin shaft hole to form locking.

[0018] Further, the bottom plate of the acting cylinder support is connected on the moving frame beam by bolts, and a ribbed plate is arranged between the standing plate and the bottom plate of the acting cylinder support.

[0019] The utility model discloses a wind driven generator transformer in and out tower section method, place the transformer on the horizontal guide rail frame at the tower section hatch, carry out the step -by -step formula push top or pull to the transformer, realize the transformer in and out tower section.

[0020] Compared with the prior art, the utility model has the beneficial technical effects that:

[0021] The utility model discloses a wind driven generator transformer dragging device, through set up locking assembly locking and unlocking moving frame, can switch the different position of moving frame on the track platform top surface and then realize long -distance pull or push top transformer. Through the setting of push -pull acting cylinder, pull or push top action can be realized in the telescopic stroke range of push -pull acting cylinder. The track platform adopts the rectangular frame of section steel welding forming, not only as the guide component also as the support bridge across the hatch place of wind -powered tower section. The utility model discloses a wind driven generator transformer dragging device directly installs at the hatch place of tower section, adopts pull and push top mode and pulls out or pushes back the transformer in the wind -powered tower section.

[0022] In addition, by laying the wear-resistant plate on the top surface of the track platform, the bottom surface of the transformer base slides on the wear-resistant plate, the friction coefficient is reduced, the track platform is protected, and the wear-resistant plate can be repaired by only replacing the wear-resistant plate after the wear-resistant plate is worn. The pin is driven by the pin action cylinder to realize the connection or disconnection of the movable frame pin shaft to the top surface of the track platform, the pin connection mode is convenient for quick locking and unlocking, has great connection strength, and can meet the driving force demand of pulling or pushing the transformer. By adding the upper pin shaft hole, the connection strength can be increased, and the strength requirement of the pin action cylinder is reduced. By arranging the floating joint, the upper pin shaft hole and the lower pin shaft hole can be aligned and inserted even if the coaxiality is slightly different, the bending stress of the pin action cylinder is reduced, and the wear of the action cylinder is reduced. Moreover, the length of the adjusting screw rod segment entering the threaded hole of the pin head can also adjust the height position of the initial state of the pin. By arranging the clamping cross beam, the connection relationship with the shell base of the transformer can be established, the U-shaped clamp is used for clamping, the surrounding connection mode has good stability, and the clamping cross beam is not easy to fall off or the connection point is not easy to be damaged. By hingedly connecting the movable frame and the piston rod end of the push-pull action cylinder, compared with the fixed connection mode at both ends, the push-pull action cylinder is avoided from being subjected to a large lateral bending moment, the friction between the piston and the cylinder barrel is reduced, and the service life of the action cylinder is prolonged. By arranging the mark pit and the mark line, whether the movable frame is pushed to the position can be observed by the operator, and after the movable frame is pushed to the position, the pin can be smoothly inserted into the upper pin shaft hole and the lower pin shaft hole to form locking. By arranging the rib plate between the vertical plate and the bottom plate of the action cylinder support, the structural rigidity and strength of the action cylinder support are increased, the mounting position of the pin action cylinder is not deformed, and the pin can smoothly act.

[0023] The method for the transformer of the wind driven generator to enter and exit the tower cylinder changes the horizontal position of the transformer to be acted on. Compared with the vertical lifting-horizontal moving-vertical landing mode of the existing operation mode, the method saves time cost and site management cost, avoids collision damage, and improves the work efficiency of transformer installation and dismounting. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described below in combination with the drawings.

[0025] Figure 1 It is the front view structural schematic diagram of the utility model wind driven generator transformer dragging device;

[0026] Figure 2 It is the front view structural schematic diagram of the utility model wind driven generator transformer dragging device;

[0027] Figure 3 It is the front view structural schematic diagram of the utility model wind driven generator transformer dragging device;

[0028] Figure 4 is a front view structural schematic diagram of a latch action cylinder installation position in the utility model;

[0029] Figure 5 is a top view structural schematic diagram of a dragging mechanism in the utility model.

[0030] Explanation of reference signs: 1, track platform; 101, wear plate; 102, lower latch hole; 103, connecting plate; 104, identification line; 2, moving frame; 201, lug seat; 202, upper pin shaft hole; 203, identification pit; 3, action cylinder support; 301, bottom plate; 302, rib plate; 4, latch action cylinder; 5, floating joint; 501, screw section; 6, latch; 7, push-pull action cylinder; 8, clamping frame; 801, clamping cross beam; 9, transformer. DETAILED DESCRIPTION

[0031] The core of the utility model is to provide a wind driven generator transformer dragging device, which is directly installed at a hatch of a tower drum, and adopts a pulling and pushing mode to pull out or push back the transformer from the wind power tower drum.

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] With reference to the drawings, Figure 1 is a front view structural schematic diagram of a wind driven generator transformer dragging device of the utility model; Figure 2 is a top view structural schematic diagram of a wind driven generator transformer dragging device of the utility model; Figure 3 is a left view structural schematic diagram of a wind driven generator transformer dragging device of the utility model; Figure 4 is a front view structural schematic diagram of a latch action cylinder installation position in the utility model; Figure 5 is a top view structural schematic diagram of a dragging mechanism in the utility model.

[0035] In a specific embodiment, asFigures 1-5 The utility model discloses wind driven generator transformer dragging device as shown in the figure, is arranged at the hatch of wind power tower drum, includes:

[0036] Rail platform 1 adopts the rectangular frame of section steel welding molding, and the long side adopts I -beam, and the horizontal side adopts steel sheet welding. Rail platform 1 is crossed and arranged at the hatch of wind power tower drum, and the inside and outside two ends of rail platform 1 are placed on the platform in the tower drum and the step ladder platform outside the tower drum respectively using cushion beam and cushion block. The top surface of rail platform 1 is the moving track surface of transformer 9 in and out hatch, and the top surface of rail platform 1 is horizontally arranged, and in order to reduce the frictional resistance of the bottom surface of transformer 9 base and the top surface of rail platform 1, lubricating grease can be coated on the top surface of rail platform 1.

[0037] Dragging mechanism includes moving frame 2, push-pull cylinder 7 and clamping frame 8. Push-pull cylinder 7 is arranged on the center line along the length direction of rail platform 1, and the bottom of push-pull cylinder 7 is installed on clamping frame 8, and the base of push-pull cylinder 7 is installed on clamping frame 8 through bolt. Clamping frame 8 is connected with transformer 9. The piston rod end of push-pull cylinder 7 is connected with moving frame 2, and the both ends of moving frame 2 slide on the top surface of rail platform 1.

[0038] Locking assembly can lock and unlock the position of moving frame 2 on the top surface of rail platform 1.

[0039] By setting the locking assembly to lock and unlock moving frame 2, different positions of moving frame 2 on the top surface of rail platform 1 can be switched to realize long-distance pulling or pushing transformer 9. By setting push-pull cylinder 7, pulling or pushing action can be realized within one telescopic stroke range of push-pull cylinder 7. Rail platform 1 adopts the rectangular frame of section steel welding molding, not only as a guide member, but also as a support bridge crossed at the hatch of wind power tower drum. The utility model discloses wind driven generator transformer dragging device is directly installed at the hatch of tower drum, and adopts pulling and pushing mode to pull out or push back transformer in wind power tower drum.

[0040] In a specific embodiment of the utility model, as shown in Figures 1-3 The top surface of rail platform 1 is provided with wear plate 101, and moving frame 2 and transformer 9 slide on wear plate 101.

[0041] Specifically, wear plate 101 adopts stainless steel plate and is installed on the top surface of rail platform 1 using countersunk screw. In order to reduce the frictional resistance of the bottom surface of transformer 9 base and wear plate 101, lubricating grease can be coated on the top surface of wear plate 101.

[0042] By laying the wear plate 101 on the top surface of the track platform 1, the bottom surface of the transformer 9 base slides on the wear plate 101, which reduces the friction coefficient and also protects the track platform 1, and after the wear plate 101 is worn, only the wear plate 101 needs to be replaced to repair.

[0043] In a specific embodiment of the present application, as shown in Figures 1-4 The lower pin shaft hole 102 is arranged on the top surface of the track platform 1 and the wear plate 101, and a plurality of lower pin shaft holes 102 are arranged at equal intervals on the long side of the track platform 1. The two sets of locking assemblies are arranged at the two ends of the moving frame 2 and are symmetrically arranged about the center line of the moving frame 2. The locking assembly comprises a cylinder bracket 3, a pin cylinder 4 and a pin 6. The pin cylinder 4 is installed at the end of the moving frame 2 through the cylinder bracket 3, and the vertically downward piston rod of the pin cylinder 4 is installed with the pin 6, and the pin 6 can be inserted into the lower pin shaft hole 102.

[0044] Specifically, the pin cylinder 4 and the push-pull cylinder 7 are both hydraulic cylinders, which can ensure sufficient pulling and pushing strength.

[0045] Specifically, as shown in Figures 1-3 and Figure 5 The end of the moving frame 2 is provided with an upper pin shaft hole 202, and the pin 6 is first inserted into the upper pin shaft hole 202 and then inserted into the lower pin shaft hole 102 to form a lock. That is, the upper pin shaft hole 202 and the lower pin shaft hole 102 have the same diameter and can be coaxial when the moving frame 2 is moved in alignment.

[0046] Specifically, as shown in Figure 1 , Figure 3 and Figure 4 The end of the piston rod of the pin cylinder 4 is provided with a floating joint 5, the top threaded hole of the floating joint 5 is connected with the end screw rod of the piston rod of the pin cylinder 4, the bottom end of the floating joint 5 is coaxially provided with a screw rod segment 501, the screw rod segment 501 is screw-connected into the threaded hole of the head of the pin 6, a lock nut is screw-connected on the screw rod segment 501, and the lock nut is tightly arranged on the top surface of the head of the pin 6.

[0047] Specifically, the floating joint 5 is a universal swing floating joint, and when the pin cylinder 4 is retracted, the bottom end of the pin 6 is still inserted into the upper part of the upper pin shaft hole 202.

[0048] Obviously, the locking assembly can also be driven by a servo motor to rotate a screw, which is screw-connected into different threaded holes, a plurality of threaded holes arranged at equal intervals are arranged on the top surface of the track platform 1, and the moving frame 2 is locked and unlocked on the top surface of the track platform 1. Similarly, the simple replacement method also falls within the protection scope of the present application.

[0049] The pin 6 is driven by the pin action cylinder 4 to connect or disconnect the pin shaft of the moving frame 2 to the top surface of the track platform 1, and the pin connection mode is convenient for quick locking and unlocking, has great connection strength, and can meet the driving force demand of pulling or pushing the transformer 9. The connection strength is increased by the addition of the upper pin shaft hole 202, and the strength requirement of the pin action cylinder 4 is reduced. The floating joint 5 is arranged, so that the upper pin shaft hole 202 and the lower pin shaft hole 102 can be aligned and inserted even if the coaxiality is slightly different, the bending stress of the pin action cylinder 4 is reduced, and the wear of the pin action cylinder is reduced. Moreover, the length of the adjusting screw rod segment 501 entering the threaded hole in the head of the pin 6 can also adjust the height position of the initial state of the pin 6.

[0050] In a specific embodiment of the present application, as shown in Figures 1-3 and Figure 5 , the clamping frame 8 is provided with a clamping beam 801 on the side facing the transformer 9, and the clamping beam 801 is perpendicular to the long side of the track platform 1; the clamping beam 801 is clamped to the shell base of the transformer 9 by bolts and U-shaped clamps. The U-shaped clamps and the clamping beam 801 clamp the shell base of the transformer 9.

[0051] Obviously, if the shell base of the transformer 9 is provided with a threaded hole on the side facing the clamping beam 801, a bolt can also be used to directly pass through the through hole of the clamping beam 801 and connect the threaded hole. Similar simple replacement methods are also within the protection scope of the present application.

[0052] By arranging the clamping beam 801, the clamping relationship between the clamping beam 801 and the shell base of the transformer 9 is established, the U-shaped clamps are used for clamping, and the surrounding connection mode has good stability and is not easy to fall off or damage the connection point.

[0053] In a specific embodiment of the present application, as shown in Figure 1 , Figure 2 and Figure 5 , the moving frame 2 is provided with an ear seat 201 on the side facing the push-pull action cylinder 7, and the push-pull action cylinder 7 is provided with a fish eye joint at the end of the piston rod, which is hingedly connected in the ear seat 201.

[0054] Specifically, as shown in Figure 2 and Figure 5 , the moving frame 2 is provided with an identification pit 203 at the top of both ends, and the track platform 1 is provided with an identification line 104 outside the lower pin shaft hole 102, which is a short horizontal line and is arranged along the width direction of the track platform 1. When the identification pit 203 is aligned with the identification line 104, the pin 6 can be inserted into the upper pin shaft hole 202 and the lower pin shaft hole 102 to form a lock.

[0055] Specifically, in order to identify the pit 203 and the identification line 104 is convenient for observation, adopt the recess after filling bright yellow pigment to identify.

[0056] By hinging the mobile frame 2 and the push-pull cylinder 7 piston rod end, relative to both ends are fixedly connected, avoid the push-pull cylinder 7 is subjected to greater lateral bending moment, easy to increase the friction of piston or piston rod and cylinder, reduce the service life of cylinder. Through the setting of identification pit 203 and identification line 104, it is convenient for the operator to observe whether the mobile frame 2 is pushed to the position, and the bolt 6 can smoothly pass into the upper bolt shaft hole 202 and the lower bolt shaft hole 102 to form locking after being pushed to the position.

[0057] In a specific embodiment of the present application, as shown in Figures 1-5 The bottom plate 301 of the cylinder support 3 is connected to the mobile frame 2 beam by bolts, and the rib plate 302 is arranged between the vertical plate and the bottom plate 301 of the cylinder support 3. The bolt cylinder 4 is installed on the vertical plate of the cylinder support 3 through two L-shaped support plates.

[0058] By adding the rib plate 302 between the vertical plate and the bottom plate 301 of the cylinder support 3, the structural rigidity and strength of the cylinder support 3 are increased, and the installation position of the bolt cylinder 4 will not be deformed, so that the bolt 6 can operate smoothly.

[0059] The working principle of the wind driven generator transformer dragging device is as follows: after the device is assembled at the cabin door of the wind driven generator tower, appropriate amount of lubricating oil is applied on the surface of the wear-resistant plate 101. The disassembled transformer is lifted and placed on the inner end of the track platform 1 by using a simple gantry or a crown block in the tower. The U-shaped clamp and the clamping beam 801 are bolted to surround the bottom of the transformer 9 shell to complete the clamping connection. The control panel of the hydraulic pump station is controlled to adjust the ejection length of the push-pull cylinder 7, so that the mobile frame 2 is pushed in a larger ejection stroke range. After the identification pit 203 on the mobile frame 2 and the identification lines 104 on both sides are aligned, manual alignment is performed if there is a deflection. The control panel of the hydraulic pump station is controlled to eject the bolt cylinder 4, and the bolt 6 is inserted into the lower bolt shaft hole 102 through the upper bolt shaft hole 202 to form locking, which is used to limit the movement of the mobile frame 2. Then the control panel of the hydraulic pump station is controlled, the push-pull cylinder 7 is retracted, the clamping frame 8 is driven, and the transformer 9 is moved outwardly from the tower by a fixed distance. The control panel of the hydraulic pump station is controlled, the bolt cylinder 4 is retracted, and the bolt 6 is pulled out of the lower bolt shaft hole 102. Then, the push-pull cylinder 7 is ejected again to move the mobile frame 2 to the outer end of the track platform 1 by a fixed distance of the hole spacing of the lower bolt shaft hole 102, the bolt cylinder 4 is ejected again to position the bolt 6 in the lower bolt shaft hole 102, and the push-pull cylinder 7 is retracted to drag the transformer 9 outwardly. The transformer 9 is dragged away from the tower by multiple sequential operations. When the transformer 9 needs to be sent into the tower, the reverse operation can be performed.

[0060] In summary, the utility model discloses wind driven generator transformer dragging device, through setting up locking assembly locking and unlocking moving frame 2, can switch the different position of moving frame 2 on the top surface of track platform 1 and then realize long distance pulling or pushing transformer 9. Through the setting of push-pull cylinder 7, pulling or pushing action can be realized within one telescopic stroke range of push-pull cylinder 7. Track platform 1 adopts rectangular frame of section steel welding molding, not only as guide component but also as support bridge across the hatch of wind power tower. The utility model discloses wind driven generator transformer dragging device is directly installed at the hatch of tower, adopts pulling and pushing mode and pulls out or pushes back transformer in wind power tower. In addition, by laying wear plate 101 on the top surface of track platform 1, the bottom surface of transformer 9 base slides on wear plate 101, reduces friction coefficient and also protects track platform 1, and wear plate 101 is worn, and only wear plate 101 can be replaced to repair. Through the insertion of pin action cylinder 4 and pin 6, moving frame 2 pin shaft connection or pin shaft connection to the top surface of track platform 1 is realized, and this pin connection mode is convenient for realizing quick locking and unlocking, and also has greater connection strength, can satisfy the driving force demand of pulling or pushing transformer 9. Through the addition of upper pin shaft hole 202, the connection strength can be increased, and the strength requirement of pin action cylinder 4 is reduced. Through the setting of floating joint 5, even if the coaxiality of upper pin shaft hole 202 and lower pin shaft hole 102 is a little, it can also be aligned and inserted, and the bending stress of pin action cylinder 4 is reduced, and the cylinder wear is reduced. Moreover, the length of adjusting screw rod section 501 into the thread hole of the head of pin 6 can also adjust the height position of the initial state of pin 6. By setting the clamping crossbeam 801, the connection relationship with the shell base of transformer 9 is established, U-shaped clamps are used for clamping, and the surrounding connection mode has good stability and is not easy to fall off or damage the connection point. By hinging the moving frame 2 and the piston rod end of push-pull cylinder 7, relative to the both-end fixed connection mode, the push-pull cylinder 7 is avoided to bear greater lateral bending moment, the piston or piston rod and cylinder barrel are not easy to increase friction, and the service life of the cylinder is reduced. Through the setting of mark pit 203 and mark line 104, whether moving frame 2 is pushed to the position is convenient for operating personnel to observe, and after being pushed to the position, pin 6 can be smoothly inserted into upper pin shaft hole 202 and lower pin shaft hole 102 to form locking. By adding rib plate 302 between the vertical plate of cylinder support 3 and bottom plate 301, the structural rigidity and strength of cylinder support 3 are increased, the installation position of pin action cylinder 4 will not be deformed, and pin 6 can smoothly act.

[0061] The utility model discloses still wind driven generator transformer in and out tower method, places transformer 9 on the horizontal guide rail frame at the hatch of tower, removes the step formula and pushes or pulls transformer 9, realizes that transformer 9 goes in and out tower.

[0062] Specifically, the wind turbine transformer dragging device in any of the above embodiments is applied to move the transformer 9 by dragging or pushing to achieve the in-out of the tower.

[0063] The wind turbine transformer in-out tower method realizes the horizontal position change of the transformer 9. Compared with the vertical lifting-horizontal moving-vertical landing mode of the existing operation mode, the time cost and the site management cost are saved, the collision damage is avoided, and the work efficiency of the transformer 9 installation and disassembly is improved.

[0064] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between various embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0065] The above-described embodiments only describe the preferred mode of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A wind turbine transformer drag device, arranged at a hatch of a wind turbine tower, characterized in that, The utility model relates to a kind of mobile platform for transformer, including: Rail platform (1) is shaped rectangular frame using profile steel welding, the rail platform (1) top surface is the moving rail surface of transformer (9) access hatch, the rail platform (1) top surface is horizontally arranged; Drag mechanism, including moving frame (2), push-pull cylinder (7) and clamping frame (8), the push-pull cylinder (7) is arranged on the center line along the length direction of the rail platform (1), the bottom of the push-pull cylinder (7) is mounted on the clamping frame (8), and the clamping frame (8) is connected to the transformer (9);The piston rod end of the push-pull cylinder (7) is connected to the moving frame (2), and the both ends of the moving frame (2) slide on the top surface of the rail platform (1); Locking assembly, the locking assembly can lock and unlock the position of the moving frame (2) on the top surface of the rail platform (1).

2. Wind turbine transformer dragging device according to claim 1, characterized in that: The top surface of the rail platform (1) is provided with a wear plate (101), and the moving frame (2) and the transformer (9) slide on the wear plate (101).

3. A wind turbine transformer dragging device according to claim 2, characterised in that: The top surface of the rail platform (1) and the wear plate (101) are provided with a lower pin shaft hole (102), and a plurality of lower pin shaft holes (102) are arranged at equal intervals on the long side of the rail platform (1). Two sets of locking assemblies are arranged at the both ends of the moving frame (2), and the locking assembly comprises a cylinder support (3), a latch cylinder (4) and a latch (6). The latch cylinder (4) is mounted to the end of the moving frame (2) through the cylinder support (3). The vertically downward piston rod of the latch cylinder (4) is provided with the latch (6). The latch (6) can be inserted into the lower pin shaft hole (102).

4. A wind turbine transformer dragging device according to claim 3, characterised in that: The end of the moving frame (2) is provided with an upper pin shaft hole (202). The latch (6) is first inserted into the upper pin shaft hole (202) and then inserted into the lower pin shaft hole (102) to form a lock.

5. A wind turbine transformer dragging device according to claim 4, characterised in that: The piston rod end of the latch cylinder (4) is provided with a floating joint (5). The top threaded hole of the floating joint (5) is connected to the piston rod end screw of the latch cylinder (4). The bottom end of the floating joint (5) is coaxially provided with a screw segment (501). The screw segment (501) is screwed into the threaded hole in the head of the latch (6). A lock nut is screwed onto the screw segment (501). The lock nut is tightly attached to the top surface of the head of the latch (6).

6. A wind turbine transformer drag device according to any of claims 1-5, characterised in that The side of the clamping frame (8) facing the transformer (9) is provided with a clamping beam (801), which is perpendicular to the long side of the rail platform (1). The clamping beam (801) clamps the shell base of the transformer (9) through bolts and U-shaped clamps.

7. A wind turbine transformer dragging device according to claim 4, characterised in that: The side of the moving frame (2) facing the push-pull cylinder (7) is centrally provided with an ear seat (201). The piston rod end of the push-pull cylinder (7) is provided with a fish eye joint, which is hinged in the ear seat (201).

8. A wind turbine transformer dragging device according to claim 7, characterised in that: The mobile frame (2) is provided with an identification pit (203) at the top of both ends, the track platform (1) is provided with an identification line (104) outside the lower pin shaft hole (102), when the identification pit (203) is aligned with the identification line (104), the bolt (6) can be inserted into the upper pin shaft hole (202) and the lower pin shaft hole (102) to form a lock.

9. A wind turbine transformer dragging device according to claim 3, characterised in that: The bottom plate (301) of the action cylinder support (3) is connected to the beam of the mobile frame (2) by bolts, and a rib plate (302) is arranged between the vertical plate and the bottom plate (301) of the action cylinder support (3).

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