A transformer hoisting device

Abstract

The application discloses a transformer hoisting device, which comprises a frame and a hoisting mechanism, a climbing mechanism and a supporting mechanism installed on the frame from bottom to top. The climbing mechanism comprises a mounting box and two climbing wheels, the two climbing wheels are arranged on the two sides of the mounting box and can adjust the distance between each other, the cross section of the climbing wheel is in a groove shape, which is used for cooperating with the outer wall of the telegraph pole, the mounting box is provided with a driving motor for driving the climbing wheel to rotate and an adjusting motor for adjusting the distance between the two climbing wheels, and a torque sensor is installed on the output shaft of the adjusting motor. The supporting mechanism comprises a top plate, two pressing plates and an adjusting assembly. The application can climb to the top of the telegraph pole and solve the problem that the traditional transformer hoisting relies on the crane and is difficult to operate in complex terrain, meanwhile, the torque sensor is used for automatically adjusting the clamping force, and the camera is used for assisting in judging the position of the pressing plate, so that the operation safety and efficiency are improved.

Description

Technical Field

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

[0002] During the construction and maintenance of power lines, transformers need to be installed on the crossarm between two utility poles. Traditional installation methods mainly rely on crane lifting or manual lifting, which has the following shortcomings:

[0003] (1) The crane is large in size and difficult to enter complex terrains such as mountains, fields and narrow alleys. Moreover, the cost of renting and using the crane is high, and it is not suitable for sporadic installation of a single transformer.

[0004] (2) Manual lifting is inefficient and labor-intensive. Transformers usually weigh hundreds of kilograms, and there are major safety risks such as falling and overturning during manual lifting.

[0005] (3) Some existing small hoisting devices require pre-installed attachment brackets or guide rails on the utility pole. They cannot climb to the top of the utility pole by themselves and need to be lifted into place with the help of external equipment, which is inconvenient to use and has poor adaptability.

[0006] Therefore, how to provide a transformer hoisting device is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] One object of the present invention is to provide a transformer hoisting device that can facilitate the installation of transformers on utility poles.

[0008] According to an embodiment of the present invention, a transformer hoisting device includes a frame and a hoisting mechanism, a climbing mechanism, and a support mechanism, which are sequentially installed on the frame from bottom to top. The climbing mechanism includes a mounting box and two climbing wheels. The two climbing wheels are respectively disposed on both sides of the mounting box and their spacing is adjustable. The climbing wheels have a concave cross-section for engaging with the outer wall of a utility pole. The mounting box is equipped with a drive motor for rotating the climbing wheels and an adjusting motor for adjusting the spacing between the two climbing wheels. A torque sensor is installed on the output shaft of the adjusting motor. The support mechanism includes a top plate, two pressure plates, and an adjusting assembly. The two pressure plates are slidably mounted on both sides of the top plate and their spacing is adjustable. The bottom of the pressure plates has an anti-detachment groove adapted to the top of the utility pole. Cameras are installed on the sides of both pressure plates, with the camera lenses facing the top of the utility pole. The hoisting mechanism includes a support plate and a lifting assembly installed at the bottom of the support plate, with a hook on the lifting assembly.

[0009] Preferably, the climbing wheel includes a wheel body and rims at both ends of the wheel body. The diameter of the wheel body is smaller than the diameter of the rims. The inner surface of the rims is a bevel. The surface of the wheel body is provided with anti-slip texture. The climbing wheel is made of wear-resistant rubber or polyurethane material.

[0010] Preferably, a main wheel frame and a secondary wheel frame are slidably mounted on both sides of the mounting box, and two climbing wheels are rotatably mounted on the main wheel frame and the secondary wheel frame, respectively. The main wheel frame has teeth on the side facing the inside of the mounting box, and a gear is rotatably mounted inside the mounting box. The gear meshes with the teeth for transmission, and the gear is connected to the adjustment motor for transmission.

[0011] Preferably, the sub-wheel frame is rotatably connected to the climbing wheel.

[0012] Preferably, when the torque value detected by the torque sensor is lower than a preset threshold, the controller controls the regulating motor to rotate forward, driving the two climbing wheels closer to each other; when the torque value is higher than the preset threshold, the controller controls the regulating motor to rotate in reverse, driving the two climbing wheels away from each other.

[0013] Preferably, a gyroscope is installed on the top of the mounting box to detect the horizontal state of the device during the climbing process; when the gyroscope detects that the device is tilted, the controller controls the drive motor on the corresponding side to accelerate or decelerate until the device returns to horizontal.

[0014] Preferably, the top plate has an installation cavity and a long strip-shaped limiting hole on each side. One end of the pressure plate is inserted into the installation cavity, and a threaded tube is fixed to the top of the pressure plate. The connection between the threaded tube and the pressure plate passes through the limiting hole.

[0015] Preferably, the adjustment assembly includes a dual-axis motor and two screws. The two screws are respectively connected to the output ends on both sides of the dual-axis motor. The threads of the two screws are in opposite directions, and the two screws are respectively connected to the threaded tubes on the two pressure plates.

[0016] Preferably, a guide tube is fixed to the top of the top plate, and a guide rod is slidably installed inside the guide tube, with one end of the guide rod fixedly connected to the top of the pressure plate.

[0017] Preferably, the camera is provided with a transparent protective cover on its outer side.

[0018] Preferably, the camera is installed on the lateral side of the pressure plate, aligned with the center of the anti-detachment groove.

[0019] Preferably, the frame is a rectangular steel frame structure, which is composed of two longitudinal beams and several transverse beams. The frame is provided with a first mounting position, a second mounting position and a third mounting position along the height direction for installing the hoisting mechanism, the climbing mechanism and the support mechanism.

[0020] Preferably, a control box is fixed to the top of the support plate, and a controller is installed inside the control box. The controller is electrically connected to the lifting assembly, drive motor, adjustment motor, dual-axis motor, torque sensor, gyroscope 24, and camera. The controller communicates with a handheld remote control terminal wirelessly.

[0021] Preferably, the lifting assembly is an electric hoist or a manual hoist.

[0022] Preferably, when the lifting assembly is a manual hoist, the manual hoist is a chain hand chain hoist, including a chain box and a hand chain, and the manual hoist has a built-in bidirectional ratchet brake.

[0023] Preferably, a lithium battery pack is detachably mounted on the frame, and the lithium battery pack is electrically connected to the drive motor, the regulating motor, the dual-axis motor, the controller, the torque sensor, the gyroscope and the camera respectively.

[0024] Preferably, the lithium battery pack has a capacity of at least 20Ah and a voltage of 24V or 48V.

[0025] Preferably, the handheld remote control terminal includes a housing, a display screen and operation buttons mounted on the housing, a built-in battery and a wireless communication module. The display screen is used to display in real time images captured by the camera, horizontal status data detected by the gyroscope 24, torque values ​​detected by the torque sensor, remaining power of the lithium battery pack and current operating status information of the device.

[0026] Preferably, anti-tilt rollers are installed on both the main wheel frame and the auxiliary wheel frame. The anti-tilt rollers are at a different height from the climbing wheels to improve the passive anti-tilt capability of the device.

[0027] The beneficial effects of this invention are:

[0028] (1) The present invention can climb up the utility pole to the top and take place by itself without the need for large external equipment such as cranes, and without the need for manual installation of any auxiliary facilities on the utility pole in advance. It is suitable for complex terrains such as mountainous areas, fields, and narrow alleys, which significantly reduces the operating cost and construction difficulty and avoids the risk of personnel working at height.

[0029] (2) The present invention uses a torque sensor to detect the clamping force between the climbing wheel and the utility pole in real time, and automatically adjusts the distance between the two climbing wheels to keep the clamping force constant, ensuring that the climbing process is safe and reliable, and preventing the device from falling due to insufficient clamping force or the climbing wheel from excessive wear due to excessive clamping force.

[0030] (3) The present invention uses a gyroscope to detect the horizontal state of the device in real time and automatically correct it, ensuring that the device remains horizontal during the climbing process, thereby improving the hoisting accuracy and safety.

[0031] (4) The present invention uses electric hoists or manual hoists for the lifting components, and the power supply system can use lithium battery packs or external power sources. It is applicable to both working scenarios with and without power supply, and has strong environmental adaptability.

[0032] (5) By setting anti-tilt rollers on the main wheel frame and the auxiliary wheel frame, and the anti-tilt rollers and the climbing wheels are located at different heights in the vertical direction, the anti-tilt rollers are kept in a non-contact state with the utility pole when the device is climbing normally; when the device tilts laterally, the anti-tilt roller on the tilted side automatically contacts the outer wall of the utility pole, forming two support points on the surface of the utility pole, generating an anti-overturning moment to prevent the device from tilting further. This passive anti-tilt protection can effectively prevent the device from falling off the utility pole due to excessive lateral tilt without the need to add an independent drive device, which significantly improves the safety of the climbing process. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of a transformer hoisting device proposed in this invention;

[0035] Figure 2 This is a side view of the hoisting mechanism.

[0036] Figure 3 This is a schematic diagram of the climbing mechanism.

[0037] Figure 4 This is a schematic diagram showing the connection between the climbing wheel and the main wheel frame and the auxiliary wheel frame;

[0038] Figure 5 This is a structural diagram of the supporting mechanism;

[0039] Figure 6 This is a structural schematic diagram of the top slab;

[0040] Figure 7 This is a schematic diagram of the pressure plate structure;

[0041] Figure 8 This is a top view of the supporting mechanism;

[0042] Figure 9 This is a schematic diagram of the device climbing.

[0043] Figure 10 This is a schematic diagram of the device's support configuration.

[0044] Figure 11 A schematic diagram showing the location to prevent detachment from the groove;

[0045] Figure 12This is a diagram showing the installation location of the camera;

[0046] Figure 13 This is a schematic diagram showing the installation position of the anti-tilt roller.

[0047] In the diagram: 1. Lifting mechanism; 11. Support plate; 12. Lifting assembly; 13. Hook; 14. Control box; 2. Climbing mechanism; 21. Mounting box; 22. Climbing wheel; 23. Adjusting motor; 24. Gyroscope; 25. Gear; 26. Main wheel frame; 261. Tooth; 27. Secondary wheel frame; 28. Drive motor; 29. ​​Anti-tilt roller; 3. Support mechanism; 31. Top plate; 311. Mounting cavity; 312. Limiting hole; 32. Pressure plate; 321. Threaded pipe; 322. Camera; 323. Anti-detachment groove; 324. Anti-detachment protrusion; 33. Screw; 34. Dual-axis motor; 35. Guide tube; 36. Guide rod; 4. Frame; 5. Utility pole. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0049] Example 1

[0050] refer to Figure 1 The present invention provides a transformer hoisting device, including a hoisting mechanism 1, a climbing mechanism 2, and a supporting mechanism 3, which are installed on a frame 4 from bottom to top.

[0051] Frame 4 is a rectangular steel frame structure. Along its height, frame 4 has a first mounting position (lower part), a second mounting position (middle part), and a third mounting position (top part), which are respectively used to fix and install the hoisting mechanism 1, the climbing mechanism 2, and the support mechanism 3. Battery mounting brackets (not shown in the figure) are provided on the sides of frame 4 for installing lithium battery packs.

[0052] like Figure 2 As shown, the hoisting mechanism 1 includes a support plate 11, which is horizontally arranged and fixedly connected to the frame 4 on both sides. A lifting lug is fixedly installed at the bottom center of the support plate 11, and the hoisting assembly 12 is fixedly connected to the lifting lug by lifting eye bolts.

[0053] In this embodiment, the lifting assembly 12 is an electric hoist. The control terminal of the electric hoist is electrically connected to the controller inside the control box 14. The lower end of the lifting chain of the electric hoist is connected to a hook 13. The hook 13 is used to hook onto the lifting strap or lifting bracket connected to the top of the transformer.

[0054] A control box 14 is fixed to the top of the support plate 11, and a controller is installed inside the control box 14. The controller communicates with a handheld remote control terminal wirelessly, enabling ground operators to remotely control the electric hoist. The controller is electrically connected to the electric hoist, the regulating motor 23, the drive motor 28, the dual-axis motor 34, the torque sensor, the gyroscope 24, and the camera 322.

[0055] like Figure 3 and Figure 4 As shown, the climbing mechanism 2 includes a mounting box 21, which is horizontally positioned and fixedly connected between the longitudinal beams of the frame 4. A main wheel frame 26 and a secondary wheel frame 27 are respectively provided on both sides of the mounting box 21. Both the main wheel frame 26 and the secondary wheel frame 27 are slidably inserted into the mounting box 21 and can slide back and forth along the length of the mounting box 21.

[0056] Two climbing wheels 22 are respectively rotatably mounted on the main wheel frame 26 and the auxiliary wheel frame 27. For example... Figure 5 and Figure 6 As shown, the climbing wheel 22 includes a wheel body and rims at both ends of the wheel body. The diameter of the wheel body is smaller than the diameter of the rims, giving the climbing wheel 22 a concave cross-section, that is, a narrow middle and wide ends. The concave shape is either arc-shaped or V-shaped. The surface of the wheel body of the climbing wheel 22 is provided with anti-slip textures, and the inner surface of the rim is beveled. The climbing wheel 22 is made of wear-resistant rubber material.

[0057] A drive motor 28 is mounted on one side of the main wheel frame 26. The output shaft of the drive motor 28 is connected to the axle of the climbing wheel 22 via a reducer, and is used to drive the climbing wheel 22 to rotate. The auxiliary wheel frame 27 is horizontally rotatably connected to one end of the climbing wheel 22, so that during assembly, it is not necessary to completely remove the main wheel frame 26 from the mounting box. After removing the auxiliary wheel frame 27, simply rotate the auxiliary wheel frame 27 horizontally and insert the utility pole 5 into the device from the inside of the auxiliary wheel frame 27.

[0058] like Figure 4 As shown, the main wheel frame 26 has teeth 261 on the side facing the interior of the mounting box 21. A gear 25 is installed inside the mounting box 21, and the gear 25 meshes with the teeth 261 of the main wheel frame 26 for transmission. The gear 25 is connected to the output shaft of the regulating motor 23. A torque sensor is installed on the output shaft of the regulating motor 23 for real-time detection of the driving torque of the regulating motor 23. The preset threshold is 30%-70% of the rated torque of the regulating motor 23.

[0059] When the clamping force between the climbing wheel 22 and the utility pole 5 decreases, the driving torque of the adjusting motor 23 decreases accordingly. When the torque value detected by the torque sensor is lower than the preset threshold, the controller controls the adjusting motor 23 to rotate forward, driving the two climbing wheels 22 to move closer to each other. Conversely, when the torque value is higher than the preset threshold, the controller controls the adjusting motor 23 to rotate in reverse, driving the two climbing wheels 22 to move away from each other, thereby adapting to the distance changes between the two utility poles 5 as the device climbs.

[0060] A gyroscope 24 is mounted on the top of the mounting box 21 to detect the horizontal status of the device in real time during the climbing process. When the device is detected to be tilted in the length direction, the controller controls the corresponding drive motor 28 to accelerate or decelerate according to the tilt direction until the gyroscope 24 detects that the device is no longer tilted in the length direction, or the tilt angle returns to within the threshold.

[0061] The mounting box 21 is also equipped with a travel limit switch to limit the sliding travel of the main wheel frame 26 and the auxiliary wheel frame 27.

[0062] like Figures 5-8 As shown, the support mechanism 3 is located at the top of the device and includes a top plate 31, two pressure plates 32, and an adjustment assembly. The top plate 31 is horizontally positioned and its two ends are fixedly connected to the top ends of the two longitudinal beams of the frame 4.

[0063] The top plate 31 has a mounting cavity 311 and an elongated limiting hole 312 on each side. The mounting cavity 311 extends along the width direction of the top plate 31, and the limiting hole 312 is located above the mounting cavity 311 and communicates with it. One end of the pressure plate 32 is inserted into the mounting cavity 311 from the side of the top plate 31 and can slide back and forth along the width direction of the top plate 31. A threaded tube 321 is fixedly connected to the top of the pressure plate 32. The connection between the threaded tube 321 and the pressure plate 32 passes through the limiting hole 312 and slides along the limiting hole 312. The limiting hole 312 limits the sliding stroke of the pressure plate 32.

[0064] like Figures 10-12 As shown, the bottom of the pressure plate 32 is provided with an anti-detachment groove 323, which is adapted to the curvature of the top of the utility pole 5, and the size of the groove is larger than the diameter of the top of the utility pole 5. The top of the utility pole 5 is embedded in the groove and is difficult to detach.

[0065] Furthermore, an anti-detachment protrusion 324 is provided in the middle of the anti-detachment groove 323, which forms an annular limiting groove with the side wall of the anti-detachment groove 323. The diameter of the anti-detachment protrusion 324 is designed according to the actual size of the utility pole. After the anti-detachment protrusion 324 is embedded in the center hole at the top of the utility pole 5, both the inner and outer sides are limited. Even if one fails, the other can still play the due limiting role, further improving the anti-detachment effect.

[0066] Furthermore, a rubber pad is fixed to the bottom of the anti-slip groove 323 by screws, which further improves the anti-slip effect and enhances the connection stability between the pressure plate 32 and the utility pole 5.

[0067] The adjustment assembly includes a dual-axis motor 34 and two screws 33. The dual-axis motor 34 is mounted in the center of the top plate 31, and the two screws 33 are respectively connected to the output ends on both sides of the dual-axis motor 34, with the threads of the two screws 33 in opposite directions. The two screws 33 are threadedly connected to the threaded tubes 321 on the two pressure plates 32. The dual-axis motor 34 is electrically connected to a controller, and by remotely controlling the start, stop, forward and reverse rotation of the dual-axis motor 34, the two pressure plates 32 can be driven to move closer or further apart along the mounting cavity 311.

[0068] A guide tube 35 is also fixed to the top of the top plate 31. A guide rod 36 is slidably installed inside the guide tube 35. One end of the guide rod 36 is fixedly connected to the top of the pressure plate 32. The cooperation between the guide rod 36 and the guide tube 35 guides the sliding of the pressure plate 32 and improves the deformation resistance of the pressure plate 32.

[0069] like Figures 10-12 As shown, cameras 322 are installed on the outer sides of both pressure plates 32, with the lenses of the cameras 322 facing the top of the utility pole 5.

[0070] The camera 322 can be magnetically installed at the farthest end of the pressure plate 32, or it can be adjusted as needed to be magnetically installed in a horizontal position aligned with the center of the anti-detachment groove 323, so as to more easily confirm its relative position to the utility pole, and thus confirm the position of the anti-detachment groove 323.

[0071] The camera 322 is electrically connected to the controller, and the image signals captured by the camera 322 are transmitted to the display screen of the handheld remote control terminal via wireless communication. A transparent protective cover is provided on the outside of the camera 322.

[0072] A lithium battery pack (not shown in the figure) is detachably mounted on the battery mounting bracket of frame 4. The lithium battery pack is a rechargeable lithium battery pack. After the lithium battery pack is regulated by a voltage regulator, it is electrically connected to the drive motor 28, the regulating motor 23, the dual-axis motor 34, the controller, the torque sensor, the gyroscope 24, the camera 322, and the handheld remote control terminal.

[0073] When there is an external power source at the work site, the controller, drive motor 28, regulating motor 23, dual-axis motor 34, torque sensor, gyroscope 24 and camera 322 can also be powered by an external power source through a power adapter.

[0074] The handheld remote control terminal is a portable handheld device, including a housing, a display screen mounted on the housing, operation buttons, a built-in battery, and a wireless communication module. The handheld remote control terminal communicates with the controller wirelessly. The display screen shows in real-time images captured by the camera 322, horizontal status data detected by the gyroscope 24, torque values ​​detected by the torque sensor, remaining lithium battery power, and the device's current operating status.

[0075] Between the two utility poles 5 where the transformer needs to be installed, the hoisting mechanism 1, climbing mechanism 2, and support mechanism 3 are assembled into a single unit using the frame 4. Before operation, check the lithium battery pack's charge level to ensure it is sufficient.

[0076] like Figure 9 As shown, two climbing wheels 22 are respectively pressed tightly against the outer side of the corresponding utility poles 5. Remotely controlled via a handheld remote terminal, the drive motor 28 is started to rotate the climbing wheels 22, allowing the device to climb upwards along the two utility poles 5. During the climb, a torque sensor monitors the clamping force in real time and adjusts it automatically, while a gyroscope 24 monitors the horizontal position in real time and corrects it automatically.

[0077] During this process, the operator observes the images captured by camera 322 in real time through the display screen of a handheld remote terminal to accurately determine whether the pressure plate 32 has exceeded the top of the utility pole 5. Once it is confirmed that both pressure plates 32 have exceeded the top of the utility pole 5, the climbing stops.

[0078] like Figure 10 As shown, the dual-axis motor 34 is started, and the distance between the two pressure plates 32 is adjusted so that the anti-detachment groove 323 at the bottom of the pressure plate 32 is directly above the top of the utility pole 5. Then, the drive motor 28 is reversed, and the device slowly descends so that the anti-detachment groove 323 at the bottom of the pressure plate 32 is tightly attached to the top of the utility pole 5, thus completing the support and positioning of the device.

[0079] Then, the electric hoist is started via a handheld remote control terminal, lowering hook 13 to the ground. The transformer is then connected to hook 13 via a lifting sling, and the electric hoist is then controlled to lift it. When hoisting the transformer, the transformer's mounting bracket must first be fixed to the crossarm between the two utility poles 5. After the transformer is lifted to the installation height, it is installed and secured by the operators.

[0080] After installation, first raise the device moderately, then control the dual-axis motor 34 to rotate in the opposite direction to retract the pressure plate 32. Next, control the drive motor 28 to rotate in the opposite direction, lowering the device along the utility pole 5 to a position 0.5-1 meter above the transformer. Then, workers remove the lifting straps between the hook 13 and the transformer. After disassembling the device, lower it back to the ground completely in batches. During transformer hoisting, tie ropes should be installed on the transformer to avoid the crossarm.

[0081] It is worth noting that the handheld remote control terminal establishes a communication connection with the controller inside the control box (14) via a wireless communication module or a wired communication module. When the operator operates the buttons or joystick on the handheld remote control terminal, the remote control terminal generates a corresponding control command signal. This signal is sent to the controller via the wireless communication module. After decoding, the controller outputs a drive signal to the corresponding actuator (drive motor 28, adjustment motor 23, dual-axis motor 34, or lifting assembly 12) to control the corresponding actuator's action. At the same time, the controller transmits the image signal collected by the camera 322, the horizontal state data detected by the gyroscope 24, the torque value detected by the torque sensor, and the remaining power of the lithium battery pack back to the handheld remote control terminal in real time and displays it on the screen.

[0082] In addition, the handheld remote control terminal can also establish a communication connection with the controller in the control box (14) through the wired communication module. The working process will not be described in detail here.

[0083] Example 2

[0084] like Figure 3 and Figure 4 As shown, the climbing wheel 22 is mounted on a main wheel frame 26 and a secondary wheel frame 27 at both ends. Both the main wheel frame 26 and the secondary wheel frame 27 are inserted into a mounting box 21 and can slide back and forth along the width of the mounting box 21. A tooth 261 is provided on one side of the main wheel frame 26, and a gear 25 is installed inside the mounting box 21. The gear 25 meshes with the main wheel frame 26 for transmission. The gear 25 is connected to the adjusting motor 23 for transmission.

[0085] By adjusting the motor 23 to drive the gear 25 to rotate, the gear 25 drives the main wheel frame 26 to slide along the mounting box 21, thereby causing the two climbing wheels 22 to move towards each other, thus realizing the adjustment of the clamping force on the two utility poles 5.

[0086] The climbing wheel 22 is driven to rotate by a drive motor 28 mounted on one side of the main wheel frame 26. The output shaft of the drive motor 28 is connected to the axle of the climbing wheel 22 via a reducer.

[0087] The climbing wheel 22 is rotatably connected to the auxiliary wheel frame 27. The auxiliary wheel frame 27 can swing within a certain angle range around its connection point with the mounting box 21, which facilitates the creation of a notch for the utility pole 5 to be embedded in. This allows the device to be installed on two utility poles without having to move the two climbing wheels 22 to their furthest point.

[0088] A gyroscope 24 is mounted on the top of the mounting box 21 to detect the horizontal status of the device during climbing. When an imbalance is detected, the controller controls the corresponding drive motor 28 to accelerate or decelerate according to the tilt direction until the device returns to horizontal. The controller is installed inside the control box 14 and can be linked with a handheld remote control terminal.

[0089] The mounting box 21 is also equipped with a travel limit switch to limit the sliding travel of the main wheel frame 26 and the auxiliary wheel frame 27.

[0090] Example 3

[0091] like Figures 5-8 As shown, an installation cavity 311 and a long strip-shaped limiting hole 312 are provided on the top plate 31. A threaded tube 321 is installed on the top of the pressure plate 32. The pressure plate 32 is inserted from one side of the installation cavity 311, and the connection between the threaded tube 321 and the pressure plate 32 passes through the limiting hole 312, so that the stroke of the pressure plate 32 is limited by the limiting hole 312.

[0092] The adjustment assembly includes two screws 33 with opposite threads, which are mounted on the output shafts at both ends of a dual-axis motor 34. The dual-axis motor 34 is also electrically connected to a controller inside the control box 14. The screws 33 are threadedly connected to a threaded tube 321. By remotely controlling the start, stop, and forward / reverse rotation of the dual-axis motor 34, the two pressure plates 32 can be moved closer or further apart to accommodate utility poles 5 with different spacing.

[0093] To improve the strength and rigidity of the pressure plate 32, a guide tube 35 is fixed to the top of the top plate 31. A guide rod 36 is installed inside the guide tube 35. One end of the guide rod 36 is fixedly connected to the top of the pressure plate 32, and the other end of the guide rod 36 is slidably installed inside the guide tube 35. The cooperation between the guide tube 35 and the guide rod 36 not only guides the sliding of the pressure plate 32, but also improves the bending resistance of the pressure plate 32 when subjected to vertical loads.

[0094] Cameras 322 are installed on the outermost sides of the two pressure plates 32, with the lenses of the cameras 322 facing the top of the utility pole 5. During the climbing process, the operator observes the images captured by the cameras 322 in real time through the display screen of the handheld remote terminal. Once it is confirmed that the pressure plates 32 have passed the top of the utility pole 5, the climbing stops.

[0095] Furthermore, a transparent protective cover is provided on the outside of the camera 322.

[0096] Example 4

[0097] like Figure 13 As shown, this embodiment further includes an anti-tilting roller 29 based on the aforementioned embodiment 1.

[0098] Anti-tilt rollers 29 are installed on both the main wheel frame 26 and the auxiliary wheel frame 27. The axial direction of the anti-tilt rollers 29 is parallel to the axial direction of the climbing wheel 22, and the anti-tilt rollers 29 are rotatably mounted on the top or bottom of the main wheel frame 26 and the auxiliary wheel frame 27 via roller shafts.

[0099] In this embodiment, the anti-tilt roller 29 is installed on top of the main wheel frame 26 and the auxiliary wheel frame 27, and the anti-tilt roller 29 and the climbing wheel 22 are located at different heights in the vertical direction. That is, the installation height of the anti-tilt roller 29 is higher than the installation height of the climbing wheel 22, and there is a certain distance between them in the vertical direction. The cross-section of the anti-tilt roller 29 is cylindrical, and its diameter is smaller than the diameter of the climbing wheel 22. The axis of the anti-tilt roller 29 is parallel to the axis of the climbing wheel 22. The anti-tilt roller 29 is made of wear-resistant rubber or polyurethane material, and its outer surface is smooth or has anti-slip texture.

[0100] A certain gap is maintained between the anti-tilt roller 29 and the outer wall of the utility pole 5 during normal climbing. The anti-tilt roller 29 does not perform a clamping function; it is only used as a passive anti-tilt limiting structure. When the device tilts laterally during climbing due to factors such as center of gravity shift, wind force, or unevenness of the utility pole 5 surface, the entire device deflects to one side. The anti-tilt roller 29 on the tilting side moves towards the utility pole 5 with the wheel frame. When the tilt angle exceeds the preset safety angle, the outer wall of the anti-tilt roller 29 on that side contacts the outer wall of the utility pole 5, generating contact resistance and preventing the device from tilting further. Since the anti-tilt roller 29 and the climbing wheel 22 are at different heights in the vertical direction, when one side of the anti-tilt roller 29 contacts the utility pole 5, the anti-tilt roller 29 and the climbing wheel 22 form two support points on the outer wall of the utility pole 5. The vertical distance between the two support points forms an anti-overturning moment, effectively resisting the lateral tilting tendency of the device, thereby preventing the device from falling off the utility pole 5 or causing damage to components due to excessive lateral tilt angle.

[0101] In normal climbing mode, both anti-tilt rollers 29 remain in non-contact with the outer wall of the utility pole 5, generating no frictional resistance and not affecting the normal drive of the climbing wheels 22. When the device tilts laterally, the wheel frame (main wheel frame 26 or auxiliary wheel frame 27) on the tilted side moves closer to the utility pole 5, and the anti-tilt rollers 29 mounted on that wheel frame move closer to the outer wall of the utility pole 5 accordingly. When the anti-tilt rollers 29 contact the outer wall of the utility pole 5, the friction of the contact surface prevents the wheel frame from moving further towards the utility pole 5, thus limiting the tilt angle of the device to within a safe range. Simultaneously, since the anti-tilt rollers 29 are rotatably mounted, as the device continues to climb, the anti-tilt rollers 29 roll along the outer wall of the utility pole 5, without affecting the device's upward or downward movement.

[0102] Furthermore, the anti-tilt rollers 29 can be simultaneously installed on the top and bottom of both the main wheel frame 26 and the auxiliary wheel frame 27, meaning one anti-tilt roller 29 is installed at the top and bottom of each wheel frame. The top anti-tilt rollers 29 and the bottom anti-tilt rollers 29 are spaced apart in the vertical direction. When the device tilts laterally, the top and bottom anti-tilt rollers 29 on the same wheel frame form two contact points with the outer wall of the utility pole 5, respectively, further increasing the anti-tipping moment and improving the anti-tilting effect.

[0103] Roller seats are fixedly installed at the top or bottom of the main wheel frame 26 and the auxiliary wheel frame 27. Bearings are installed inside the roller seats. The roller shaft of the anti-tilt roller 29 passes through the bearings and is fixed, allowing the anti-tilt roller 29 to rotate freely around the roller shaft. The axial length of the anti-tilt roller 29 is at least 1 / 3 of the axial length of the climbing wheel 22 to ensure sufficient contact area.

[0104] With the above settings, the anti-tilt roller 29 is in a non-contact standby state when the device is climbing normally, and automatically intervenes when the device tilts, providing limit protection in a passive manner. It has a simple structure, high reliability, and effectively improves the lateral stability of the device during the climbing process.

[0105] Example 5

[0106] In this embodiment, the lifting assembly is a manual hoist: the manual hoist is a chain hand chain hoist, including a chain box and a hand chain, one end of which extends into the chain box and engages with the internal sprocket. The top of the manual hoist is fixedly connected to the lifting lug at the bottom of the support plate 11 by eye bolts or shackles. The lower end of the lifting chain of the manual hoist is connected to a hook 13, which is used to hook the lifting strap connecting the transformer.

[0107] The manual hoist has a built-in two-way ratchet brake. When the operator stops pulling the chain, the brake automatically locks to prevent the lifting components from slipping down unexpectedly.

[0108] The operator stands on the ground and pulls the driven side of the hand chain (i.e., the side opposite to the lifting direction), extending the lifting chain downwards and lowering hook 13 to the ground. After connecting the transformer to hook 13 via the lifting sling, the operator pulls the driving side of the hand chain (i.e., the side in the same direction as the lifting direction), retracting the lifting chain upwards and lifting hook 13 raising the transformer to the installation height. When lowering the manual hoist, the brake must be unlocked first, and then the driven side of the hand chain must be pulled slowly to ensure a smooth descent of the transformer.

[0109] In scenarios without an external power source, the drive motor 28 of the climbing mechanism 2, the adjustment motor 23, and the dual-axis motor 34 of the support mechanism 3 all use DC motors. The device is powered by a rechargeable lithium battery pack mounted on the frame 4. The lithium battery pack is detachably mounted on a battery mounting bracket on the side of the frame 4.

[0110] The lithium battery pack is a rechargeable lithium battery pack. The controller, torque sensor, gyroscope 24, and camera 322 inside the control box 14 are also powered by this lithium battery pack. The lithium battery pack must be fully charged before each operation, and at least one spare battery should be available to handle continuous operation or situations where the battery is low on power. If there are no charging facilities on site, continuous operation can be achieved by replacing the spare lithium battery pack.

[0111] During the climbing process, when the gyroscope 24 detects a tilt in the length direction of the device, the controller automatically controls the corresponding drive motor 28 to accelerate or decelerate according to the tilt direction until the device returns to a horizontal position. This automatic correction process is powered by a lithium battery pack and requires no external power source.

[0112] The camera 322 and the display screen of the handheld remote control terminal are powered by a lithium battery pack. During the climbing process, the operator can observe the images captured by the camera 322 in real time through the display screen of the handheld remote control terminal to accurately determine whether the pressure plate 32 has exceeded the top of the utility pole 5. The handheld remote control terminal has a built-in rechargeable battery.

[0113] Working Principle: Before operation, check the lithium battery pack's charge to ensure it is fully charged; install the lithium battery pack on the battery mounting base of frame 4 and connect the power cords of each electrical component; place the assembled device between two utility poles 5, so that the two climbing wheels 22 press against the outer walls of the two utility poles 5 respectively; remotely start the drive motor 28 via a handheld remote control terminal, and the device climbs upwards along the utility poles 5. During the climb, the torque sensor automatically adjusts the clamping force, and the gyroscope 24 automatically corrects the horizontal state; observe the relative position of the pressure plate 32 and the top of the utility pole 5 in real time through the camera 322, and stop climbing after confirming that both pressure plates 32 have passed the top of the utility pole 5; control the dual-axis motor 34 to drive the two pressure plates 32 to adjust their position. The distance is adjusted so that the anti-detachment groove 323 at the bottom of the pressure plate 32 is above the top of the utility pole 5. Then, the drive motor 28 is reversed to lower the device, and the pressure plate 32 is pressed tightly against the top of the utility pole 5 to complete the support and positioning. The operator stands on the ground and pulls the driven side of the manual hoist's chain to lower the hook 13 to the ground. The transformer is then connected to the hook 13 via the lifting strap. The operator pulls the active side of the manual hoist's chain to lift the transformer to the installation height, completing the transformer installation. After installation, the device is first raised, and then the dual-shaft motor 34 is controlled to drive the two pressure plates 32 to retract. The lifting strap is then removed from the device 0.5-1m above the transformer. After disassembly, the device is sent to the ground in batches, and the operation is completed.

[0114] With the above-described design, this invention is applicable to both construction sites with power supply and remote areas without power supply, demonstrating good environmental adaptability.

[0115] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A transformer hoisting device, comprising a frame (4) and a hoisting mechanism (1), a climbing mechanism (2), and a supporting mechanism (3) sequentially mounted on the frame (4) from bottom to top, characterized in that: The climbing mechanism (2) includes a mounting box (21) and two climbing wheels (22). The cross-section of the climbing wheel (22) is groove-shaped and is used to cooperate with the outer wall of the utility pole (5). The mounting box (21) is provided with a drive motor (28) for driving the climbing wheel (22) to rotate and an adjustment motor (23) for adjusting the distance between the two climbing wheels (22). A torque sensor is installed on the output shaft of the adjustment motor (23). The support mechanism (3) includes a top plate (31), two pressure plates (32) and an adjustment component. The bottom of the pressure plate (32) is provided with an anti-detachment groove (323), and a camera (322) is installed on the side of the pressure plate (32). The hoisting mechanism (1) includes a support plate (11) and a hoisting assembly (12) installed at the bottom of the support plate (11), and the hoisting assembly (12) is provided with a hook (13).

2. The transformer hoisting device according to claim 1, characterized in that, The surface of the climbing wheel (22) is provided with anti-slip texture.

3. The transformer hoisting device according to claim 1, characterized in that, The main wheel frame (26) and the auxiliary wheel frame (27) are slidably mounted on both sides of the mounting box (21). The two ends of the climbing wheel (22) are connected to the main wheel frame (26) and the auxiliary wheel frame (27) respectively. The main wheel frame (26) has teeth (261) on the side facing the inside of the mounting box (21). A gear (25) is rotatably mounted inside the mounting box (21). The gear (25) meshes with the teeth (261) for transmission. The gear (25) is connected to the regulating motor (23) for transmission.

4. A transformer hoisting device according to claim 3, characterized in that, The sub-wheel frame (27) is rotatably connected to the climbing wheel (22).

5. A transformer hoisting device according to claim 1, characterized in that, A gyroscope (24) is mounted on the top of the mounting box (21).

6. A transformer hoisting device according to claim 1, characterized in that, The top plate (31) has an installation cavity (311) and a long strip-shaped limiting hole (312) on both sides. One end of the pressure plate (32) is inserted into the installation cavity (311). A threaded tube (321) is fixed on the top of the pressure plate (32). The connection between the threaded tube (321) and the pressure plate (32) passes through the limiting hole (312). A guide tube (35) is fixed on the top of the top plate (31). A guide rod (36) is slidably installed in the guide tube (35). One end of the guide rod (36) is fixedly connected to the top of the pressure plate (32).

7. A transformer hoisting device according to claim 6, characterized in that, The adjustment assembly includes a dual-axis motor (34) and two screws (33). The two screws (33) are respectively connected to the output ends on both sides of the dual-axis motor (34). The threads of the two screws (33) are opposite in direction. The two screws (33) are respectively threaded to the threaded tubes (321) on the two pressure plates (32).

8. A transformer hoisting device according to claim 1, characterized in that, The frame (4) is a rectangular steel frame structure. Three mounting positions are provided at intervals along the height direction on the frame (4), which are used to fix the hoisting mechanism (1), the climbing mechanism (2) and the support mechanism (3) respectively.

9. A transformer hoisting device according to claim 1, characterized in that, A control box (14) is fixed on the top of the support plate (11). A controller is installed in the control box (14). The controller is electrically connected to the lifting assembly (12), the drive motor (28), the adjustment motor (23), the dual-axis motor (34), the torque sensor, the gyroscope 24, and the camera (322). The controller communicates with a handheld remote control terminal via wireless communication.

10. A transformer hoisting device according to claim 3, characterized in that, Anti-tilt rollers (29) are installed on both the main wheel frame (26) and the auxiliary wheel frame (27), and the anti-tilt rollers (29) are at different heights from the climbing wheel (22).

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