A transformer hoisting device

Abstract

The application discloses a transformer hoisting device and relates to the technical field of transformers, which comprises a first lifting ring and a first laser emitter arranged on an upper lifting chain transmission assembly; a laser track capturing plate is arranged on an upper cylindrical sleeve; the upper cylindrical sleeve is rotationally connected with a lower cylindrical sleeve through an adjusting shaft assembly and is arranged in an up-down distribution; the two ends of the upper cylindrical sleeve and the lower cylindrical sleeve are connected with a lower lifting chain assembly through electric push rods; the upper lifting chain transmission assembly is connected with a second lifting ring and a third lifting ring of the upper cylindrical sleeve and the lower cylindrical sleeve through an upper lifting chain group; the bottom of the lower lifting chain assembly is connected with a transformer and is provided with a second laser emitter; a remote controller is in communication connection with the upper lifting chain transmission assembly, the laser track capturing plate, the adjusting shaft assembly, the lower lifting chain assembly and the second laser emitter. In the process of hoisting the transformer, the size of the transformer can be flexibly matched, the transformer can be accurately leveled, the hoisting stability can be better ensured, and the reliability of the transformer hoisting operation is improved as a whole.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a transformer lifting device. Background Technology

[0002] As a crucial component of the power system, the reliable operation of transformers is a fundamental condition for ensuring the stable operation of the power grid. When transformers need to be replaced or repaired, they are typically unloaded from a height using transformer lifting equipment or installed on appropriate supports to complete the lifting operation.

[0003] Currently, when lifting transformers, the lifting device is often fixed to the lifting ring of the transformer with a wire rope to lift the transformer. However, the transformer is prone to swaying from side to side and cannot be flexibly adjusted to ensure lifting stability, resulting in low reliability of transformer lifting operations. Summary of the Invention

[0004] This invention provides a transformer lifting device that solves the technical problem that in the prior art, when lifting transformers, the transformers are prone to swaying from side to side and cannot be flexibly adjusted to ensure lifting stability, resulting in low reliability of transformer lifting operations.

[0005] The present invention provides a transformer lifting device, comprising: an upper lifting chain drive assembly, an upper lifting chain group, an upper cylindrical bushing, a lower cylindrical bushing, multiple lower lifting chain assemblies, and a remote controller;

[0006] The top of the upper chain drive assembly is fixed with a first lifting ring, and the bottom center of the upper chain drive assembly is provided with a first laser emitter;

[0007] A laser trajectory capturing plate is laid at the top center of the upper cylindrical sleeve. The laser trajectory capturing plate is used to capture the laser emitted by the first laser emitter and generate corresponding laser orientation information.

[0008] The middle part of the upper cylindrical sleeve is rotatably connected to the middle part of the lower cylindrical sleeve through the adjustment shaft assembly that is communicated with by the remote controller, and they are distributed vertically. Both ends of the upper cylindrical sleeve and the lower cylindrical sleeve are connected to the lower suspension chain assembly through electric push rods.

[0009] The upper cylindrical sleeve and the lower cylindrical sleeve are symmetrically fixed with second lifting rings on both sides of the top, and the lower lifting chain assembly is fixed with a third lifting ring on the top. The upper lifting chain transmission assembly is connected to the second lifting ring and the third lifting ring respectively through the upper lifting chain assembly.

[0010] The bottom of the lower suspension chain assembly is connected to the transformer and is equipped with a second laser emitter, which is used to collect distance information from the transformer;

[0011] The remote controller is communicatively connected to the hanging chain drive assembly and the laser trajectory capture plate, respectively. The remote controller is used to adjust the hanging chain drive assembly by generating a corresponding first control command when it is determined that the laser deviates from the center position of the laser trajectory capture plate based on the laser orientation information.

[0012] The remote controller is communicatively connected to the lower suspension chain assembly and the second laser emitter. The remote controller is also used to adjust the lower suspension chain assembly for progressive leveling by generating a corresponding second control command when it is determined that the leveling condition has been met based on all the distance information.

[0013] Optionally, the upper chain drive assembly includes an upper chain drive housing and a first control motor, a main drive shaft, a first drive shaft, and a second drive shaft disposed within the upper chain drive housing;

[0014] The top of the upper chain drive housing is fixed with a first lifting ring, and the bottom center of the upper chain drive housing is provided with a first laser emitter;

[0015] The first control motor is connected to the main drive shaft and is also connected to the remote controller.

[0016] The first drive shaft and the second drive shaft are perpendicular to each other and are respectively connected to the main drive shaft.

[0017] Optionally, the hanging chain assembly includes a first hanging chain, a second hanging chain, a third hanging chain, and a fourth hanging chain;

[0018] One end of the first upper lifting chain is connected to a second lifting ring of the upper cylindrical sleeve, and the other end of the first upper lifting chain is wound around one end of the first drive shaft and then connected to another second lifting ring of the upper cylindrical sleeve.

[0019] One end of the second upper lifting chain is connected to a third lifting ring of the upper cylindrical sleeve, and the other end of the second upper lifting chain is wound around the other end of the first drive shaft and then connected to another third lifting ring of the upper cylindrical sleeve.

[0020] One end of the third upper lifting chain is connected to a second lifting ring of the lower cylindrical sleeve, and the other end of the third upper lifting chain is wound around one end of the second drive shaft and then connected to another second lifting ring of the lower cylindrical sleeve;

[0021] One end of the fourth upper lifting chain is connected to a third lifting ring of the lower cylindrical sleeve, and the other end of the fourth upper lifting chain is wound around the other end of the second drive shaft and then connected to another third lifting ring of the lower cylindrical sleeve.

[0022] Optionally, the lower suspension chain assembly includes a lower suspension chain drive housing, a second control motor, and a lower suspension chain;

[0023] A third lifting ring is fixed to the top of the lower chain drive housing, and a second laser emitter is fixed to the bottom of the lower chain drive housing;

[0024] The second control motor is housed within the lower suspension chain drive housing, and the second control motor is connected to the electric push rod via a transmission.

[0025] One end of the lower suspension chain is connected to the second control motor via a fixed pulley, and the other end of the lower suspension chain passes through the bottom of the lower suspension chain transmission housing and is connected to the transformer.

[0026] Optionally, the other end of the lower suspension chain is connected to the transformer via a magnetic hook.

[0027] Optionally, the electric actuator includes an electric actuator moving handle and an electric actuator fixing handle;

[0028] Both ends of the upper cylindrical sleeve and both ends of the lower cylindrical sleeve are equipped with connected servo units and controllers, and the controllers are communicatively connected to the remote controller.

[0029] One end of the electric actuator fixing handle is fixedly connected to the servo;

[0030] One end of the electric actuator moving handle is slidably connected to the other end of the electric actuator fixed handle, and the other end of the electric actuator moving handle is drivenly connected to the second control motor;

[0031] The servo is electrically connected to the second control motor via wires passing through the electric actuator fixing handle and the electric actuator moving handle.

[0032] Optionally, the second control command includes a synchronization command and a leveling command; the remote controller is further used for:

[0033] When the balancing condition is determined to be met based on all the distance information, the output torque of the corresponding second control motor is obtained through each of the controllers.

[0034] If it is determined that the output torques are not all the same, the controller responds to the generated tuning command to control the corresponding servo to adjust the output torque of the second control motor to be the same for all of them.

[0035] If it is determined that all the output torques are the same, the controller responds to the generated leveling command and controls the corresponding second control motor to drive the lower suspension chain to lift and lower for progressive leveling.

[0036] Optionally, the adjusting shaft assembly includes a first shaft and a second shaft that are vertically distributed and rotatably connected;

[0037] The first rotating shaft is internally connected to a first omnidirectional motor that is communicatively connected to the remote controller, and the first rotating shaft is connected to the middle part of the upper cylindrical sleeve;

[0038] The second rotating shaft is internally connected to a second omnidirectional motor that communicates with the remote controller, and the second rotating shaft is connected to the middle part of the lower cylindrical sleeve.

[0039] Optionally, the upper chain assembly is connected to the second or third lifting ring via a spring buffer.

[0040] Optionally, the remote control is equipped with an alarm indicator light, which is used to issue a light warning signal when it is determined that the laser deviates from the center position of the laser trajectory capture plate or the distance information reaches the leveling condition.

[0041] As can be seen from the above technical solutions, the present invention has the following advantages:

[0042] The transformer lifting device of the present invention includes an upper lifting chain drive assembly, an upper lifting chain group, an upper cylindrical bushing, a lower cylindrical bushing, multiple sets of lower lifting chain assemblies, and a remote controller. A first lifting ring is fixed to the top of the upper lifting chain drive assembly, and a first laser emitter is located at the center of the bottom of the upper lifting chain drive assembly. A laser trajectory capturing plate is laid at the center of the top of the upper cylindrical bushing. The middle part of the upper cylindrical bushing is rotatably connected to the middle part of the lower cylindrical bushing via a remote controller and is distributed vertically. Both ends of the upper and lower cylindrical bushings are connected to the lower lifting chain assembly via electric push rods. Second lifting rings are symmetrically fixed to both sides of the top of the upper and lower cylindrical bushings, and a third lifting ring is fixed to the top of the lower lifting chain assembly. The upper lifting chain drive assembly is connected to the second and third lifting rings via the upper lifting chain group. The bottom of the lower lifting chain assembly is connected to the transformer and is equipped with a second laser emitter. The remote controller is communicatively connected to the upper lifting chain drive assembly and the laser trajectory capturing plate. The remote controller is also communicatively connected to the lower lifting chain assembly and the second laser emitter. During the entire transformer lifting operation, the laser emitted by the first laser emitter is captured by the laser trajectory capture board, generating corresponding laser azimuth information. The distance information from the transformer is collected by the second laser emitter. The remote controller adjusts the extension and retraction of the electric push rod through the lower lifting chain assembly. The remote controller adjusts the rotation of the upper and lower cylindrical sleeves to form different included angles through the adjusting shaft assembly. The remote controller can determine when the laser deviates from the center position of the laser trajectory capture board based on the laser azimuth information, and adjusts the upper lifting chain drive assembly to drive the upper lifting chain group to make fine adjustments through the corresponding generated first control command. The remote controller can determine when the leveling conditions are met based on all distance information, and adjust the lower lifting chain assembly to perform leveling step by step through the corresponding generated second control command. The device can flexibly match the size of the transformer and can accurately level it to better ensure lifting stability, thus improving the overall reliability of the transformer lifting operation. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the structure of the transformer lifting device provided in an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of the structure of the hanging chain drive assembly provided in an embodiment of the present invention. Figure 1 ;

[0046] Figure 3 A schematic diagram of the structure of the hanging chain drive assembly provided in an embodiment of the present invention. Figure 2 ;

[0047] Figure 4 This is a schematic diagram of the combination of the upper cylindrical sleeve and the lower suspension chain assembly provided in an embodiment of the present invention;

[0048] In the diagram:

[0049] 1. First lifting ring; 2. Upper lifting chain drive housing; 3. Main drive shaft; 4. First drive shaft; 5. Second drive shaft; 6. First laser emitter; 7. First upper lifting chain; 8. Second upper lifting chain; 9. Third upper lifting chain; 10. Fourth upper lifting chain; 11. Spring buffer; 12. Upper cylindrical sleeve; 13. Laser trajectory capture plate; 14. Second lifting ring; 15. Adjusting shaft assembly; 16. Lower cylindrical sleeve; 17. Electric actuator; 1701. Electric actuator moving handle; 1702. Electric actuator fixing handle; 18. Third lifting ring; 19. Lower lifting chain drive housing; 20. Second control motor; 21. Fixed pulley; 22. Lower lifting chain; 23. Magnetic hook; 24. Servo unit; 25. Controller; 26. Second laser emitter; 27. Remote control; 28. Alarm indicator light. Detailed Implementation

[0050] This invention provides a transformer lifting device to solve the technical problem that in the prior art, when lifting transformers, the transformers are prone to swaying from side to side and cannot be flexibly adjusted to ensure lifting stability, resulting in low reliability of transformer lifting operations.

[0051] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] For easier understanding, please refer to Figures 1 to 4 The present invention provides a transformer lifting device, comprising: an upper lifting chain drive assembly, an upper lifting chain assembly, an upper cylindrical sleeve 12, a lower cylindrical sleeve 16, multiple sets of lower lifting chain assemblies, and a remote controller 27;

[0053] The top of the upper chain drive assembly is fixed with a first lifting ring 1, and the bottom center of the upper chain drive assembly is provided with a first laser emitter 6;

[0054] A laser trajectory capturing plate 13 is laid at the top center of the upper cylindrical sleeve 12. The laser trajectory capturing plate 13 is used to capture the laser emitted by the first laser emitter 6 and generate corresponding laser orientation information.

[0055] The middle part of the upper cylindrical sleeve 12 is connected to the middle part of the lower cylindrical sleeve 16 via the remote controller 27 via the adjusting shaft assembly 15 and is rotatably connected to the middle part of the lower cylindrical sleeve 16 and is distributed vertically. Both ends of the upper cylindrical sleeve 12 and the lower cylindrical sleeve 16 are connected to the lower hanging chain assembly via the electric push rod 17.

[0056] The upper cylindrical sleeve 12 and the lower cylindrical sleeve 16 are symmetrically fixed with second lifting rings 14 on both sides of the top, and the lower lifting chain assembly is fixed with a third lifting ring 18 on the top. The upper lifting chain drive assembly is connected to the second lifting ring 14 and the third lifting ring 18 respectively through the upper lifting chain assembly.

[0057] The bottom of the lower suspension chain assembly is connected to the transformer and is equipped with a second laser emitter 26, which is used to collect distance information from the transformer.

[0058] The remote controller 27 is communicatively connected to the hanging chain drive assembly and the laser trajectory capture plate 13 respectively. The remote controller 27 is used to adjust the hanging chain drive assembly by generating a corresponding first control command when the laser is determined to deviate from the center position of the laser trajectory capture plate 13 based on the laser orientation information.

[0059] The remote controller 27 is communicatively connected to the lower suspension chain assembly and the second laser transmitter 26. The remote controller 27 is also used to adjust the lower suspension chain assembly for progressive leveling by generating a corresponding second control command when the leveling condition is determined based on all distance information.

[0060] In this embodiment of the invention, electric actuators 17 are connected to both ends of the upper cylindrical sleeve 12 and both ends of the lower cylindrical sleeve 16. The electric actuators 17 are connected to the lower lifting chain assembly via a transmission connection. The bottom of the lower lifting chain assembly is connected to the transformer. The middle part of the upper cylindrical sleeve 12 is rotatably connected to the middle part of the lower cylindrical sleeve 16 via an adjusting shaft assembly 15. The upper cylindrical sleeve 12, the adjusting shaft assembly 15, and the lower cylindrical sleeve 16 are arranged vertically. The remote controller 27 is communicatively connected to the lower lifting chain assembly and the adjusting shaft assembly 15. After receiving equipment attribute information such as the transformer model of the transformer to be lifted, the remote controller 27 controls the electric actuators 17 to extend and retract according to the size information corresponding to the transformer in its internal database. The adjusting shaft assembly 15 adjusts the upper cylindrical sleeve 7 and the lower cylindrical sleeve 10 to rotate at different angles, thereby adjusting the four sets of lower lifting chain assemblies to match the size information of the transformer, thus facilitating the lifting of the transformer. Meanwhile, the combination of two cylindrical sleeves allows for rotation and folding when not in use to reduce storage volume and improve portability.

[0061] The first lifting ring 1 is fixed to the top of the upper lifting chain drive assembly. The top two sides of the upper cylindrical sleeve 12 and the top two sides of the lower cylindrical sleeve 16 are symmetrically fixed with second lifting rings 14. The top of the lower lifting chain assembly is fixed with a third lifting ring 18. The upper lifting chain drive assembly is connected to the second lifting rings 14 and the third lifting rings 18 through the upper lifting chain assembly, thereby connecting to the upper cylindrical sleeve 12 and the lower cylindrical sleeve 16. The crane hook is used to lift the entire transformer lifting device through the first lifting ring 1, thereby driving the vertical lifting of the transformer.

[0062] The first laser emitter 6 is fixed at the bottom center of the upper chain drive assembly. A laser trajectory capturing plate 13, adapted to the first laser emitter 6, is laid at the top center of the upper cylindrical sleeve 12 facing the bottom of the upper chain drive assembly. The laser trajectory capturing plate 13 can capture the laser emitted by the first laser emitter 6 and generate corresponding laser orientation information. This laser orientation information maps the distance and direction of the laser relative to the center of the laser trajectory capturing plate 13. The laser trajectory capturing plate 13 is communicatively connected to the remote controller 27. The laser trajectory capturing plate 13 sends the generated laser orientation information to the remote controller 27 for analysis in real time. When the remote controller 27 determines that the laser position deviates from the center of the laser trajectory capturing plate 13 based on the laser orientation information, it indicates that swaying may have occurred during the transformer hoisting process. The remote controller 27 then generates a first control command for anti-sway correction. The remote controller 27 is communicatively connected to the upper chain drive assembly. The remote controller 27 sends the first control command to the upper chain drive assembly. The upper chain drive assembly responds to the received first control command and adjusts the upper chain group through transmission, so that the laser emitted by the first laser emitter 6 is continuously finely adjusted until it is determined that the laser is aligned with the center position of the laser trajectory capture plate 13. This indicates that the center of the upper chain drive assembly, the upper cylindrical sleeve 12, and the lower cylindrical sleeve 16 are on the same vertical line, and the entire device remains vertically stable.

[0063] The second laser emitter 26 is fixed to the bottom of the lower lifting chain assembly. During the transformer lifting operation, the irregular column shape of the transformer causes unilateral weight imbalance, and the repeated operation over a long period inevitably causes deformation of the lower lifting chain assembly, resulting in length deviation and thus an imbalance when lifting the transformer. The remote controller 27 is communicatively connected to the lower lifting chain assembly and the second laser emitter 26. To prevent the transformer from tilting and damaging the transformer surface components due to the lower lifting chain assembly, the second laser emitter 26 collects distance information mapped to the transformer in real time and sends it to the remote controller 27 for analysis. When the remote controller 27 determines that the leveling condition has been met based on all the distance information, it generates a second control command for leveling control. The lower lifting chain assembly responds to the second control command to perform progressive leveling to adjust the distance to the transformer.

[0064] Optionally, the balancing condition can be set to the distance deviation between the four sets of distance information being greater than a preset distance threshold. Specifically, the preset distance threshold can be set to 3mm.

[0065] Understandably, progressive leveling refers to continuously comparing the distance deviation between the remaining distance information and the maximum distance information during the leveling process. If the distance deviation is greater than the preset distance threshold, the adjustment continues, raising the lower chain component corresponding to the remaining distance information until the distance deviation is less than the preset distance threshold, at which point the leveling ends.

[0066] Please see Figures 1 to 3 The hanging chain drive assembly includes a hanging chain drive housing 2 and a first control motor, a main drive shaft 3, a first drive shaft 4, and a second drive shaft 5 housed within the hanging chain drive housing. A first lifting ring 1 is fixed to the top of the hanging chain drive housing 2, and a first laser emitter 6 is located at the center of the bottom of the hanging chain drive housing 2. The first control motor is connected to the main drive shaft 3 and is also connected to the remote controller 27. The first drive shaft 4 and the second drive shaft 5 are perpendicular to each other and are connected to the main drive shaft 3 respectively.

[0067] The upper chain assembly is connected to the second lifting ring 14 or the third lifting ring 18 via a spring buffer 11.

[0068] The upper suspension chain assembly includes a first upper suspension chain 7, a second upper suspension chain 8, a third upper suspension chain 9, and a fourth upper suspension chain 10. One end of the first upper suspension chain 7 is connected to a second lifting ring 14 of the upper cylindrical sleeve 12, and the other end of the first upper suspension chain 7 is wound around one end of the first drive shaft 4 and then connected to another second lifting ring 14 of the upper cylindrical sleeve 12. One end of the second upper suspension chain 8 is connected to a third lifting ring 18 of the upper cylindrical sleeve 12, and the other end of the second upper suspension chain 8 is wound around the other end of the first drive shaft 4 and then connected to the upper cylindrical sleeve 10. The other third lifting ring 18 of the sleeve 12 is connected; one end of the third upper lifting chain 9 is connected to one second lifting ring 14 of the lower cylindrical sleeve 16, and the other end of the third upper lifting chain 9 is wound around one end of the second drive shaft 5 and then connected to the other second lifting ring 14 of the lower cylindrical sleeve 16; one end of the fourth upper lifting chain 10 is connected to one third lifting ring 18 of the lower cylindrical sleeve 16, and the other end of the fourth upper lifting chain 10 is wound around the other end of the second drive shaft 5 and then connected to the other third lifting ring 18 of the lower cylindrical sleeve 16.

[0069] In this embodiment of the invention, the two ends of the first upper hanging chain 7 are respectively connected to two second hanging rings 14 on the upper cylindrical sleeve 12, the two ends of the second upper hanging chain 8 are respectively connected to two third hanging rings 18 on the two sets of lower hanging chain assemblies connected to the upper cylindrical sleeve 12, the two ends of the third upper hanging chain 9 are respectively connected to two second hanging rings 14 on the lower cylindrical sleeve 16, and the two ends of the fourth upper hanging chain 10 are respectively connected to two third hanging rings 18 associated with the lower cylindrical sleeve 16. The first upper hanging chain 7 and the second upper hanging chain 8 can be wound around the two sides of the first drive shaft 4 in the same winding direction, and the third upper hanging chain 9 and the fourth upper hanging chain 10 can be wound around the two sides of the second drive shaft 5 in the same winding direction. The shafts of the first drive shaft 4 and the second drive shaft 5 are respectively connected to the main drive shaft 3, which is located in the center of the upper chain drive housing 2. When the first control motor receives the first control command sent by the remote controller 27, it drives the main drive shaft 3 to rotate the first drive shaft 4, thereby tightening or loosening one end of the first upper chain 7 and the second upper chain 8 on the same side, and loosening or tightening the other end of the first upper chain 7 and the second upper chain 8 on the same side. Alternatively, it rotates the second drive shaft 5, thereby tightening or loosening one end of the third upper chain 9 and the fourth upper chain 10 on the same side, and loosening or tightening the other end of the third upper chain 9 and the fourth upper chain 10 on the same side, thus finely adjusting the position of the laser emitted by the first laser emitter 6. The first drive shaft 4 and the second drive shaft 5 are arranged perpendicularly to each other, which can prevent the upper chains from getting tangled and affecting the work efficiency. The rotation of the first drive shaft 4 and the second drive shaft 5 can also be adjusted by the main drive shaft 3 to improve the flexibility and efficiency of adjustment.

[0070] In addition, since sudden braking, acceleration, and deviation are common when using a crane for lifting, which can cause uneven force on the device and result in shaking and vibration, spring buffers 11 are installed at both ends of the first upper lifting chain 7, the second upper lifting chain 8, the third upper lifting chain 9 and the fourth upper lifting chain 10 to connect with the second lifting ring 14 or the third lifting ring 18, which can reduce the shaking amplitude of the device.

[0071] Preferably, the adjusting shaft assembly 15 includes a first shaft and a second shaft that are distributed vertically and rotatably connected; the first shaft is internally connected to a first omnidirectional motor that is communicatively connected to the remote controller 27, and the first shaft is connected to the middle part of the upper cylindrical sleeve 12; the second shaft is internally connected to a second omnidirectional motor that is communicatively connected to the remote controller 27, and the second shaft is connected to the middle part of the lower cylindrical sleeve 16.

[0072] In this embodiment of the invention, the adjusting shaft assembly 15 includes a first rotating shaft and a second rotating shaft distributed vertically. The first rotating shaft and the second rotating shaft are respectively connected to the middle part of the upper cylindrical sleeve 12 and the middle part of the lower cylindrical sleeve 16. The first omnidirectional motor in the first rotating shaft or the second omnidirectional motor in the second rotating shaft can respond to the angle adjustment command of the remote controller 27 and drive the upper cylindrical sleeve 12 or the lower cylindrical sleeve 16 to rotate, forming different included angles on the horizontal plane.

[0073] Please see Figure 1 and Figure 4 The lower suspension chain assembly includes a lower suspension chain drive housing 19, a second control motor 20, and a lower suspension chain 22. A third lifting ring 18 is fixed to the top of the lower suspension chain drive housing 19, and a second laser emitter 26 is fixed to the bottom of the lower suspension chain drive housing 19. The second control motor 20 is housed within the lower suspension chain drive housing 19 and is connected to an electric push rod 17. One end of the lower suspension chain 22 is connected to the second control motor 20 via a fixed pulley 21, and the other end of the lower suspension chain 22 passes through the bottom of the lower suspension chain drive housing 19 and is connected to a transformer.

[0074] The electric actuator 17 includes an electric actuator moving handle 1701 and an electric actuator fixing handle 1702; both ends of the upper cylindrical sleeve 12 and both ends of the lower cylindrical sleeve 16 are equipped with a servo 24 and a controller 25, which are connected to each other. The controller 25 is communicatively connected to the remote controller 27; one end of the electric actuator fixing handle 1702 is fixedly connected to the servo; one end of the electric actuator moving handle 1701 is slidably connected to the other end of the electric actuator fixing handle 1702, and the other end of the electric actuator moving handle 1701 is connected to the second control motor 20; the servo 24 is electrically connected to the second control motor 20 through wires passing through the electric actuator fixing handle 1702 and the electric actuator moving handle 1701.

[0075] The second control command includes a leveling command and a sync command; the remote controller 27 is also specifically used for: when it is determined that the sync condition has been met based on all distance information, obtaining the output torque of the corresponding second control motor 20 through each controller 25; if it is determined that the output torques are not all the same, controlling the corresponding servo 24 to adjust the output torque of the second control motor 20 to be all the same through the controller 25 responding to the generated leveling command; if it is determined that the output torques are all the same, controlling the corresponding second control motor 20 to drive the lower suspension chain 22 to rise and fall for progressive leveling through the controller 25 responding to the generated leveling command.

[0076] In this embodiment of the invention, servo units 24 and controllers 25, connected to the lower suspension chain assembly, are installed at both ends of the upper cylindrical sleeve 12 and both ends of the lower cylindrical sleeve 16. The servo units 24 are electrically connected to the second control motor 20, and the electric push rod moving handle 1701 is drive-connected to the second control motor 20. The remote controller 27 can adjust the output torque of the second control motor 20 based on the servo unit 24 via the controller 25, causing the electric push rod moving handle 1701 to slide and extend relative to the electric push rod fixed handle 1702. The lower suspension chain 22 is drive-connected to the second control motor 20 via a fixed pulley 21. The remote controller 27 can drive the controller 25 to control the servo unit 24 to adjust the output torque of the second control motor 20, causing the lower suspension chain 22 to rise and fall via the fixed pulley 21. Under the action of gravity, the lower suspension chain 22 can vertically lift the transformer, avoiding contact with the transformer's porcelain pillars.

[0077] The second laser emitter 26 is fixed to the bottom of the lower suspension chain drive housing 19. The second control commands include a synchronization command for adjusting the output torque to be the same and a leveling command for adjusting the distance balance. The remote controller 27 determines that the lower suspension chain is unbalanced when the leveling condition is met based on all the distance information sent by the second laser emitter 26. The leveling method of "four-point progressive height adjustment + torque-assisted leveling" is used to quickly and accurately adjust the chain: First, the output torque of the connected second control motor 20 is obtained by each controller 25. The existence of a suspended chain 22 is determined by whether the output torque of the four sets of second control motors 20 is the same. If the output torque is not the same, the chain is adjusted accordingly. If all distances are identical, a synchronization command is generated. Each controller 25 responds to the synchronization command and adjusts the output torque of the second control motor 20 based on the servo 24 to adjust the tension of the suspended lower chain 22 until all output torques are identical. The maximum distance information is determined from all distance information. Using a preset distance threshold as the leveling standard, the distance deviation between the maximum distance information and the remaining distance information is compared with the preset distance threshold. If all distance deviations are less than the preset distance threshold, leveling is not required. Otherwise, the controller 25 responds to the generated leveling command, raising the lower chain 22 whose distance deviation is greater than the preset distance threshold until all distance deviations are less than the preset distance threshold.

[0078] Optionally, the second control motor 20 can be a synchronous motor.

[0079] Please see Figure 1 The other end of the lower chain 22 is connected to the transformer via a magnetic hook 23.

[0080] In this embodiment of the invention, the lower lifting chain 22 contacts the transformer lifting ring through a magnetic hook 23. The magnetic hook 23 is embedded with a strong magnet, which can ensure that the lower lifting chain 22 and the transformer lifting ring are tightly attached, and prevent the lower lifting chain 22 from falling off during the lifting process.

[0081] Please see Figure 1The remote control 27 is equipped with an alarm indicator light 28. The alarm indicator light 28 is used to issue a light warning signal when it is determined that the laser deviates from the center position or distance information of the laser trajectory capture plate 13 and reaches the leveling condition.

[0082] In this embodiment of the invention, an alarm indicator light 28 is provided on the remote controller 27. When it is determined that the laser deviates from the center position or distance information of the laser trajectory capture plate 13 and reaches the leveling condition, a light warning signal is issued to remind the user. The light warning signal is stopped after the device and the lifting transformer are in vertical balance.

[0083] Preferably, the upper chain drive housing 2, the upper cylindrical sleeve 12, the lower cylindrical sleeve 16, and the lower chain drive housing 19 all adopt an arc-shaped structure and are made of aluminum alloy.

[0084] In this embodiment of the invention, the appearance design of the chain drive housing 2, the upper cylindrical sleeve 12, the lower cylindrical sleeve 16 and the lower chain drive housing 19 mostly adopts a smooth arc-shaped structure, and the material is lightweight and sturdy aluminum alloy, which can effectively reduce collision damage during operation.

[0085] The transformer lifting device of the present invention includes an upper lifting chain drive assembly, an upper lifting chain group, an upper cylindrical bushing, a lower cylindrical bushing, multiple sets of lower lifting chain assemblies, and a remote controller. A first lifting ring is fixed to the top of the upper lifting chain drive assembly, and a first laser emitter is located at the center of the bottom of the upper lifting chain drive assembly. A laser trajectory capturing plate is laid at the center of the top of the upper cylindrical bushing. The middle part of the upper cylindrical bushing is rotatably connected to the middle part of the lower cylindrical bushing via a remote controller and is distributed vertically. Both ends of the upper and lower cylindrical bushings are connected to the lower lifting chain assembly via electric push rods. Second lifting rings are symmetrically fixed to both sides of the top of the upper and lower cylindrical bushings, and a third lifting ring is fixed to the top of the lower lifting chain assembly. The upper lifting chain drive assembly is connected to the second and third lifting rings via the upper lifting chain group. The bottom of the lower lifting chain assembly is connected to the transformer and is equipped with a second laser emitter. The remote controller is communicatively connected to the upper lifting chain drive assembly and the laser trajectory capturing plate. The remote controller is also communicatively connected to the lower lifting chain assembly and the second laser emitter. During the entire transformer lifting operation, the laser emitted by the first laser emitter is captured by the laser trajectory capture board, generating corresponding laser azimuth information. The distance information from the transformer is collected by the second laser emitter. The remote controller adjusts the extension and retraction of the electric push rod through the lower lifting chain assembly. The remote controller adjusts the rotation of the upper and lower cylindrical sleeves to form different included angles through the adjusting shaft assembly. The remote controller can determine when the laser deviates from the center position of the laser trajectory capture board based on the laser azimuth information, and adjusts the upper lifting chain drive assembly to drive the upper lifting chain group to make fine adjustments through the corresponding generated first control command. The remote controller can determine when the leveling conditions are met based on all distance information, and adjust the lower lifting chain assembly to perform leveling step by step through the corresponding generated second control command. The device can flexibly match the size of the transformer and can accurately level it to better ensure lifting stability, thus improving the overall reliability of the transformer lifting operation.

[0086] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transformer lifting device, characterized in that, include: Upper suspension chain drive assembly, upper suspension chain assembly, upper cylindrical sleeve, lower cylindrical sleeve, multiple sets of lower suspension chain assemblies and remote control; The top of the upper chain drive assembly is fixed with a first lifting ring, and the bottom center of the upper chain drive assembly is provided with a first laser emitter; A laser trajectory capturing plate is laid at the top center of the upper cylindrical sleeve. The laser trajectory capturing plate is used to capture the laser emitted by the first laser emitter and generate corresponding laser orientation information. The middle part of the upper cylindrical sleeve is rotatably connected to the middle part of the lower cylindrical sleeve through an adjusting shaft assembly and is distributed vertically. The adjusting shaft assembly is communicatively connected to the remote controller. Both ends of the upper cylindrical sleeve and the lower cylindrical sleeve are connected to the lower suspension chain assembly through electric push rods. The upper cylindrical sleeve and the lower cylindrical sleeve are symmetrically fixed with second lifting rings on both sides of the top, and the lower lifting chain assembly is fixed with a third lifting ring on the top. The upper lifting chain transmission assembly is connected to the second lifting ring and the third lifting ring respectively through the upper lifting chain assembly. The bottom of the lower suspension chain assembly is connected to the transformer and is equipped with a second laser emitter, which is used to collect distance information from the transformer; The remote controller is communicatively connected to the hanging chain drive assembly and the laser trajectory capture plate, respectively. The remote controller is used to adjust the hanging chain drive assembly by generating a corresponding first control command when it is determined that the laser deviates from the center position of the laser trajectory capture plate based on the laser orientation information. The remote controller is communicatively connected to the lower suspension chain assembly and the second laser emitter. The remote controller is also used to adjust the lower suspension chain assembly for progressive leveling by generating a corresponding second control command when it is determined that the leveling condition has been met based on all the distance information. The lower suspension chain assembly includes a lower suspension chain drive housing, a second control motor, and a lower suspension chain; A third lifting ring is fixed to the top of the lower chain drive housing, and a second laser emitter is fixed to the bottom of the lower chain drive housing; The second control motor is housed within the lower suspension chain drive housing, and the second control motor is connected to the electric push rod via a transmission. One end of the lower suspension chain is connected to the second control motor via a fixed pulley, and the other end of the lower suspension chain passes through the bottom of the lower suspension chain transmission housing and is connected to the transformer; The electric actuator includes an electric actuator moving handle and an electric actuator fixing handle; Both ends of the upper cylindrical sleeve and both ends of the lower cylindrical sleeve are equipped with connected servo units and controllers, and the controllers are communicatively connected to the remote controller. One end of the electric actuator fixing handle is fixedly connected to the servo; One end of the electric actuator moving handle is slidably connected to the other end of the electric actuator fixed handle, and the other end of the electric actuator moving handle is drivenly connected to the second control motor; The servo is electrically connected to the second control motor via wires passing through the electric actuator fixing handle and the electric actuator moving handle; The second control command includes a synchronization command and a leveling command; the remote control is further specifically used for: When the balancing condition is determined to be met based on all the distance information, the output torque of the corresponding second control motor is obtained through each of the controllers. If it is determined that the output torques are not all the same, the controller responds to the generated tuning command to control the corresponding servo to adjust the output torque of the second control motor to be the same for all of them. If it is determined that all the output torques are the same, the controller responds to the generated leveling command and controls the corresponding second control motor to drive the lower suspension chain to lift and lower for progressive leveling.

2. The transformer lifting device according to claim 1, characterized in that, The upper chain drive assembly includes an upper chain drive housing and a first control motor, a main drive shaft, a first drive shaft, and a second drive shaft disposed within the upper chain drive housing; The top of the upper chain drive housing is fixed with a first lifting ring, and the bottom center of the upper chain drive housing is provided with a first laser emitter; The first control motor is connected to the main drive shaft and is also connected to the remote controller. The first drive shaft and the second drive shaft are perpendicular to each other and are respectively connected to the main drive shaft.

3. The transformer lifting device according to claim 2, characterized in that, The hanging chain assembly includes a first hanging chain, a second hanging chain, a third hanging chain, and a fourth hanging chain; One end of the first upper lifting chain is connected to a second lifting ring of the upper cylindrical sleeve, and the other end of the first upper lifting chain is wound around one end of the first drive shaft and then connected to another second lifting ring of the upper cylindrical sleeve. One end of the second upper lifting chain is connected to a third lifting ring of the upper cylindrical sleeve, and the other end of the second upper lifting chain is wound around the other end of the first drive shaft and then connected to another third lifting ring of the upper cylindrical sleeve. One end of the third upper lifting chain is connected to a second lifting ring of the lower cylindrical sleeve, and the other end of the third upper lifting chain is wound around one end of the second drive shaft and then connected to another second lifting ring of the lower cylindrical sleeve; One end of the fourth upper lifting chain is connected to a third lifting ring of the lower cylindrical sleeve, and the other end of the fourth upper lifting chain is wound around the other end of the second drive shaft and then connected to another third lifting ring of the lower cylindrical sleeve.

4. The transformer lifting device according to claim 1, characterized in that, The other end of the lower suspension chain is connected to the transformer via a magnetic hook.

5. The transformer lifting device according to claim 1, characterized in that, The adjusting shaft assembly includes a first shaft and a second shaft that are vertically distributed and rotatably connected; The first rotating shaft is internally connected to a first omnidirectional motor that is communicatively connected to the remote controller, and the first rotating shaft is connected to the middle part of the upper cylindrical sleeve; The second rotating shaft is internally connected to a second omnidirectional motor that communicates with the remote controller, and the second rotating shaft is connected to the middle part of the lower cylindrical sleeve.

6. The transformer lifting device according to claim 1, characterized in that, The upper chain assembly is connected to the second or third lifting ring via a spring buffer.

7. The transformer lifting device according to claim 1, characterized in that, The remote control is equipped with an alarm indicator light, which is used to issue a light warning signal when it is determined that the laser deviates from the center position of the laser trajectory capture plate or the distance information reaches the leveling condition.

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