Mutual inductor hoisting device and mounting and dismounting method thereof

Abstract

The invention discloses a mutual inductor hoisting device and a mounting and dismounting method thereof.The hoisting device comprises a fixed base, a hoisting framework and a transmission system, the fixed base is fixedly mounted on channel steel on the two sides of the bottom of a mutual inductor through fastening bolts and comprises an upper fixed clamping plate, a lower fixed clamping plate and fastening bolts, the hoisting framework is mounted above the fixed base, and the transmission system is connected with the hoisting framework; comprising a vertical force arm and a horizontal force arm, the transmission system comprises an electric winch, a fixed pulley, a lifting hook and a rope, the device is directly fixed to channel steel on the two sides of the installation position of the bottom of the mutual inductor through a fixing base, and a lifting framework and the transmission system are connected to the upper portion of the fixing base to achieve lifting of the mutual inductor. According to the device, the replacement work of the outdoor mutual inductor of the transformer substation is met, the working efficiency is improved, the safety of operators is guaranteed, the specific use process of the device is defined through the mounting and dismounting method, and the operators can complete work more efficiently in actual use.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a mutual inductor hoisting device and an installation and disassembly method thereof. Background Art

[0002] In the power system, in order to transmit electric energy, AC voltage and high current circuits are often used for power transmission. This high current cannot be measured by instruments, and the role of the transformer is to reduce the AC voltage and high current in proportion to values ​​that can be directly measured using instruments, so that relevant personnel can understand the current power path parameter information. At the same time, the transformer can also provide power for the relay protection device to ensure safe and stable transmission of the power line.

[0003] As one of the key equipment in the substation, the transformer is used to convert the high voltage on the primary side into a lower secondary voltage. During the construction phase of the substation, the transformer needs to be installed according to the actual construction requirements, or when the transformer fails or expires, the transformer needs to be replaced. At present, at the applicant's work site, whether it is the installation or replacement of the transformer, the transformer is hoisted by a crane or manually hoisted to complete the corresponding work content.

[0004] In the actual work site, the installation of the transformer in the substation construction phase is relatively simple. Large cranes can enter the site for operation and the construction efficiency can be guaranteed. However, the replacement of the transformer is restricted by the surrounding line equipment, the equipment area is complicated, and the working space is relatively small. Someone needs to monitor the distance between the crane boom and the live equipment at all times to avoid safety accidents, which leads to low work efficiency. However, if manual lifting is used for installation, there are certain requirements for the number of operators. The work intensity and time consumption of the operators are relatively large. At the same time, the transformer is heavy, and there are greater safety risks during transportation.

[0005] In order to overcome the hoisting problems encountered during the replacement of the transformer, relevant units have also proposed some solutions. After searching relevant patents, the Chinese invention patent with patent application number 202311468263.0 proposes a current transformer hoisting device and a hoisting method thereof. The technical solution proposed in the patent is a current transformer hoisting device for hoisting the current transformer in the switch cabinet. The switch cabinet includes a plurality of cabinet panels, and the plurality of cabinet panels can be surrounded to form a receiving cavity with an opening. The current transformer is arranged in the receiving cavity. The current transformer hoisting device includes a base, which can be moved on the ground; a support frame, which is arranged on one side of the base; a fixing mechanism, which is connected to the support frame, and the support frame can be connected to the cabinet panel on the side of the opening through the fixing assembly; a hoisting mechanism, including a boom, a connecting piece, a steel strand and a driving assembly. Although the device can solve the hoisting problem of the transformer, the technical solution is mainly used for the replacement of the transformer in the switch cabinet, and the position is fixed at the opening of the switch cabinet, which cannot solve the problem of low efficiency of transformer replacement outside the substation room currently encountered by the applicant. Summary of the invention

[0006] In order to overcome the above problems, the purpose of the present invention is to provide a transformer lifting device and an installation and disassembly method thereof, wherein the transformer lifting device is directly fixed on the channel steels on both sides of the installation position at the bottom of the transformer through a fixed base, and a lifting frame and a transmission system are connected above the fixed base to realize the lifting of the transformer. The device has a simple structure and is easy to install and disassemble, which meets the replacement work of the outdoor transformer of the substation, improves work efficiency, and ensures the safety of operators. The installation and disassembly method clarifies the specific use process of the device, which is convenient for operators to complete their work more efficiently in actual use.

[0007] The technical solution adopted by the present invention is: a transformer hoisting device, including a fixed base, a hoisting frame, and a transmission system.

[0008] The fixed base is fixedly mounted on the channel steels on both sides of the bottom of the transformer by fastening bolts, and includes an upper fixed clamping plate, a lower fixed clamping plate, and fastening bolts. The upper fixed clamping plate and the lower fixed clamping plate have the same structure, both of which are rectangular structures, with bolt fixing holes opened around them and a mounting hole opened in the middle.

[0009] The hoisting frame is installed in the mounting hole of the fixed base, and includes a vertical force arm and a horizontal force arm. The vertical force arm is installed in the mounting hole of the fixed base, and a fixing mechanism is arranged on the upper end of the vertical force arm. One end of the horizontal force arm is connected in the fixing mechanism, and the other end extends outward. A pulley mounting groove is arranged on the end of the horizontal force arm away from the fixing mechanism.

[0010] The transmission system includes an electric winch, a fixed pulley, a hook, and a rope. The electric winch is fixedly mounted on the upper surface of the fixing mechanism of the vertical force arm, the fixed pulley is mounted in a pulley mounting groove, the rope connects the hook, the fixed pulley, and the electric winch, and the hook is suspended below the pulley mounting groove by the rope.

[0011] As a further description of the present invention, the vertical force arm includes a fixed rod, a telescopic rod, and a rotating rod. The fixed rod is installed in the mounting hole, the inner side above the fixed rod is a hollow structure, and a height positioning bolt is arranged on its side. The telescopic rod is connected above the fixed rod and is located in its hollow structure. A plurality of height positioning holes arranged at equal intervals are designed on the side of the telescopic rod, and the height positioning holes are adapted to the position and size of the height positioning bolts. The lower surface of the rotating rod is a hollow structure, the upper end of the telescopic rod is connected to the hollow structure on the lower surface of the rotating rod, and the fixing mechanism is arranged on the upper surface of the rotating rod.

[0012] As a further description of the present invention, the rotating rod is manually rotated, a positioning rod is provided on the side, a rotation positioning hole is provided at the upper end of the telescopic rod, the rotation positioning holes are distributed along the circumference of the cross-section of the telescopic rod, the positioning rod is an L-shaped structure, and its short side can be extended into the rotation positioning hole, and the diameter of the short side is adapted to the diameter of the rotation positioning hole.

[0013] As a further description of the present invention, the angular interval of the circumferential distribution of the rotation positioning holes is 15°.

[0014] As a further description of the present invention, the rotating rod adopts an electric rotation mode, a motor is installed on the upper end of the telescopic rod, and the output shaft of the motor is connected to the rotating rod.

[0015] As a further description of the present invention, the horizontal force arm includes a fixed force arm and a telescopic force arm. One end of the fixed force arm is fixedly installed in the fixing mechanism, and the other end is a hollow structure, and its side is provided with evenly distributed horizontal positioning holes. The telescopic force arm is adapted to the shape and size of the hollow structure of the fixed force arm. A telescopic positioning bolt is provided on the telescopic force arm, and one end of the telescopic positioning bolt is connected to the hollow structure of the fixed force arm, and a pulley mounting groove is designed on the upper surface of the other end.

[0016] As a further description of the present invention, the upper fixing clamp plate and the lower fixing clamp plate are made of Q235 carbon steel, and their length is greater than the distance between the channel steels on both sides of the bottom of the mutual inductor.

[0017] As a further description of the present invention, the start and stop operations of the electric winch are controlled by a remote controller.

[0018] As a further description of the present invention, the hook is an anti-drop hook.

[0019] A method for installing and disassembling a transformer lifting device, the specific steps are as follows:

[0020] S01: Select a suitable location and install the fixed base.

[0021] Use fastening bolts to fix the upper and lower fixing plates to the channel steels on both sides of the transformer hoisting position;

[0022] S02: Install the lifting frame,

[0023] Install the lifting frame into the mounting hole of the fixed base;

[0024] S03: Adjust the length of the horizontal lever arm.

[0025] Adjust the telescopic positioning bolts on the telescopic arm to the appropriate position of the horizontal positioning hole and tighten them;

[0026] S04: Adjust the angle of the rotating rod;

[0027] S05: Adjust the vertical lever arm height,

[0028] Adjust the height positioning bolt to the appropriate position of the height positioning hole and tighten it;

[0029] S06: Hoisting transformer,

[0030] Use the remote control to control the electric winch to lower the hook, connect the transformer to the hook, and control the electric winch to lift the transformer to the installation height;

[0031] S07: Install the transformer,

[0032] The operator installs the transformer to the corresponding position;

[0033] S08: Adjust the lifting frame to the minimum volume.

[0034] Adjust the height positioning bolt to the lowest position of the height positioning hole and tighten it, and adjust the telescopic positioning bolt on the telescopic arm to the rightmost position of the horizontal positioning hole and tighten it;

[0035] S09: Remove the lifting frame;

[0036] S10: Remove the fixed base.

[0037] Remove the upper and lower retaining cleats.

[0038] Beneficial effects of the present invention:

[0039] The present invention discloses a transformer hoisting device, comprising a fixed base, a hoisting frame, and a transmission system. The fixed base is installed on the channel steel at the bottom of the transformer to provide support force for the device as a whole to ensure safe and reliable operation. The hoisting frame and the transmission system cooperate with each other to realize the hoisting of the transformer. The fixed base comprises an upper fixed clamping plate, a lower fixed clamping plate, and fastening bolts. The installation and fixing method is simple and can be directly fixed on site. The hoisting frame and the transmission system can adjust the height and length according to the actual situation at the operation site of replacing the transformer, and are suitable for hoisting transformers of different specifications and sizes. The device has a simple structure and is easy to install and disassemble, meets the replacement work of outdoor transformers in substations, improves work efficiency, and ensures the safety of operators.

[0040] The present invention discloses a transformer hoisting device. The vertical force arm of the hoisting frame adopts a telescopic method of a height positioning bolt and a height positioning hole to achieve height adjustment of the vertical force arm, and the height positioning bolt is fixed at a suitable height positioning hole position. The horizontal force arm adopts a positioning method of a telescopic positioning bolt and a horizontal positioning hole to achieve length adjustment of the horizontal force arm, and the telescopic positioning bolt is fixed at a suitable horizontal positioning hole position. The vertical force arm and the horizontal force arm are both adjusted by means of a bolt knob. The whole operation process is simple and convenient, the fixing structure is reliable and effective, and it is convenient for actual use on site, thereby improving the installation efficiency of the device. At the same time, it is suitable for hoisting transformers of different specifications and sizes, and has a wide range of applications.

[0041] The present invention discloses a mutual inductor hoisting device. The upper fixing splint and the lower fixing splint are made of Q235 carbon steel, so that the whole device has high strength, strong static bending load resistance and temperature adaptability. The length of the upper fixing splint and the lower fixing splint is greater than the distance between the channel steels on both sides of the bottom of the mutual inductor, so as to ensure reliable and effective installation.

[0042] The present invention discloses an installation and disassembly method for a transformer hoisting device. The installation and disassembly method clarifies the specific use process of the transformer hoisting device, so that operators can complete their work more efficiently in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the overall structure of a transformer hoisting device after installation proposed by the present invention;

[0044] Figure 2 A schematic diagram of the installation structure of a fixed base of a transformer lifting device proposed by the present invention;

[0045] Figure 3 A schematic diagram of a lifting frame and a transmission system structure of a mutual inductor lifting device proposed by the present invention;

[0046] Figure 4This is a schematic diagram of the horizontal force arm structure of a transformer lifting device proposed by the present invention;

[0047] Figure 5 This is a schematic diagram of the structure of a rotation positioning hole at the upper end of a telescopic rod of a transformer lifting device proposed by the present invention;

[0048] Figure 6 The present invention provides a flow chart of the installation and disassembly method of a transformer lifting device.

[0049] Description of Reference Numerals

[0050] 1-Fixed base, 11-Fixed splint, 12-Lower fixed splint, 13-Fastening bolts,

[0051] 2- Hoisting frame,

[0052] 21-vertical force arm, 211-fixed rod, 212-telescopic rod, 213-rotating rod, 214-height positioning bolt, 215-height positioning hole, 216-positioning rod, 217-rotation positioning hole,

[0053] 22-horizontal lever arm, 221-fixed lever arm, 222-telescopic lever arm, 223-horizontal positioning hole, 224-telescopic positioning bolt,

[0054] 23-Fixed mechanism,

[0055] 24-Pulley mounting slot,

[0056] 3- transmission system, 31- electric winch, 32- fixed pulley, 33- hook, 34- rope,

[0057] 4-Channel steel. DETAILED DESCRIPTION

[0058] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0059] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0060] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0061] like Figures 1 to 5 As shown, it shows a specific embodiment of the present invention:

[0062] Embodiment 1

[0063] The invention discloses a transformer hoisting device, comprising a fixed base 1, a hoisting frame 2, and a transmission system 3.

[0064] In this embodiment, if Figure 1 As shown, the transformer lifting device is mainly used in the transformer replacement stage outside the substation. At this time, the substation has been completed, and two parallel channel steels will be built below the transformer installation position. The installation of the transformer lifting device mainly relies on the supporting force provided by the channel steel 4. The fixed base 1 of the device is installed on the channel steel 4, and then the lifting frame 2 is connected to the fixed base 1, and the transmission system 3 is connected to complete the construction of the entire lifting device. The installation process is simple and convenient, which is suitable for rapid installation at the transformer replacement site, thereby improving work efficiency. With the help of this device, the safety problems existing in manual lifting can be avoided and manpower investment can be reduced.

[0065] In this embodiment, if Figure 1 The fixed base 1 is installed on the channel steel 4 at the bottom of the transformer to provide support for the entire device and ensure safe and reliable operation. The lifting structure 2 and the transmission system 3 cooperate with each other to realize the lifting of the transformer. The fixed base 2 has a simple installation and fixing method and can be fixed directly on site. The lifting structure 2 and the transmission system 3 can adjust the height and length according to the actual situation at the site of replacing the transformer, and are suitable for lifting transformers of different specifications and sizes. The device has a simple structure and is easy to install and disassemble, which meets the replacement work of the outdoor transformer of the substation, improves work efficiency, and ensures the safety of operators.

[0066] The fixing base 1 is fixedly mounted on the channel steels 4 on both sides of the bottom of the transformer by fastening bolts 13, and includes an upper fixing clamping plate 11, a lower fixing clamping plate 12, and fastening bolts 13. The upper fixing clamping plate 11 and the lower fixing clamping plate 12 have the same structure, both of which are rectangular structures, with bolt fixing holes opened around them and a mounting hole opened in the middle.

[0067] In this embodiment, if Figure 2As shown, the fixed base 1 is fixedly installed on the two side channel steels 4 at the bottom of the transformer by fastening bolts 13, including an upper fixing splint 11, a lower fixing splint 12, and fastening bolts 13. During the actual installation process, the upper fixing splint 11 and the lower fixing splint 12 are directly fixed to the channel steel 4 by fastening bolts 13. The method of fixing by fastening bolts 13 is simple, convenient and easy to operate. The upper fixing splint 11 and the lower fixing splint 12 have the same structure and are both rectangular structures. Bolt fixing holes are opened around them. Bolt fixing holes are opened around the upper fixing splint 11 and the lower fixing splint 12 and fastening bolts 13 are used to fix them. This can ensure that the upper fixing splint 11 and the lower fixing splint 12 are reliably and effectively fixed to the two side channel steels 4 at the bottom of the transformer, ensure the stability of the fixed base 1, and facilitate the installation of the lifting device. An installation hole is opened between the upper fixing splint 11 and the lower fixing splint 12 for installing the lifting frame 2.

[0068] Specifically, the upper fixing clamping plate 11 and the lower fixing clamping plate 12 are made of Q235 carbon steel, and their lengths are greater than the distance between the channel steels 4 on both sides of the bottom of the mutual inductor.

[0069] In this embodiment, the upper fixed splint 11 and the lower fixed splint 12 are made of Q235 carbon steel, so that the whole device has higher strength, strong static bending load resistance and temperature adaptability. The length of the upper fixed splint 11 and the lower fixed splint 12 is greater than the distance between the channel steels 4 on both sides of the bottom of the transformer, ensuring its reliable and effective installation. At the same time, since the weight of the transformer to be hoisted is relatively large, the width of the rectangular structure of the upper fixed splint 11 and the lower fixed splint 1 can be designed to be wider. In this way, the pressure per unit area of ​​the fixing mechanism 1 will be smaller, that is, the pressure is relatively small, which can also ensure the stable and safe operation of the device.

[0070] The hoisting frame 2 is installed in the mounting hole of the fixed base 1, and includes a vertical arm 21 and a horizontal arm 22. The vertical arm 21 is installed in the mounting hole of the fixed base 1, and a fixing mechanism 23 is arranged at the upper end of the vertical arm 21. One end of the horizontal arm 22 is connected to the fixing mechanism 23, and the other end extends outward. A pulley mounting groove 24 is arranged at one end of the horizontal arm 22 away from the fixing mechanism 23.

[0071] In this embodiment, if Figure 1 As shown, the vertical force arm 21 is installed in the mounting hole of the fixed base 1. The mounting hole of the fixed base 1 can be designed as an internal thread structure, and the bottom end of the vertical force arm 21 is designed as an external thread structure. The aperture size of the mounting hole is adapted to the diameter size of the bottom end of the vertical force arm 21. This facilitates direct installation by threaded connection, is simple and convenient to operate, is convenient for on-site operators to use, and improves work efficiency.

[0072] In this embodiment, the vertical force arm 21 and the upper fixed clamp plate 11 can also be designed as an integrated structure, so that there is no need to connect the vertical force arm 21 and the upper fixed clamp plate 11, the force of the integrated structure is relatively concentrated, and the stability of the entire device is better. During installation, the upper fixed clamp plate 11 is directly placed on the upper end of the channel steel 4 at the bottom of the transformer, and the vertical force arm 21 is vertically upward, and then the lower fixed clamp plate 12 and the upper fixed clamp plate 11 are fixed with fastening bolts 13 around them.

[0073] The transmission system 3 includes an electric winch 31 , a fixed pulley 32 , a hook 33 , and a rope 34 , which are installed in the pulley mounting groove 24 . The rope 34 connects the hook 33 , the fixed pulley 32 , and the electric winch 31 . The hook 33 is suspended below the pulley mounting groove 24 through the rope 34 .

[0074] In this embodiment, if Figure 1 As shown, the transformer lifting device realizes the lifting of the spatial position of the transformer through the transmission system 3. During use, the hook 33 is suspended on the rope 34, and the rise or fall is realized by the contraction of the rope 34. One end of the rope 34 is fixedly connected to the electric winch 31, and the other end passes through the fixed pulley 32 and then connects to the hook 33, and then passes through the fixed pulley 32 and finally connects to the electric winch 31. In this way, the weight of the transformer is applied to the hook 33. Since the rope 34 is lifted on both sides of the hook 33, the force on each side of the rope 34 is half of the weight of the transformer. Compared with the single-strand rope, the force is small, so the loss of the rope 34 is smaller, the service life of the rope 34 can be extended, and the safety of the transformer lifting process is also ensured.

[0075] In this embodiment, if Figure 3 As shown, the fixed pulley 32 is installed in the pulley installation groove 24. The function of the fixed pulley 32 is to change the direction of the rope 34 to ensure effective lifting and hoisting.

[0076] Specifically, the vertical force arm 21 includes a fixed rod 211, a telescopic rod 212, and a rotating rod 213. The fixed rod 211 is installed in the mounting hole. The inner side above the fixed rod 211 is a hollow structure, and a height positioning bolt 214 is arranged on its side. The telescopic rod 212 is connected to the top of the fixed rod 211 and is located in its hollow structure. A plurality of equally spaced height positioning holes 215 are designed on the side of the telescopic rod 212. The height positioning holes 215 are adapted to the position and size of the height positioning bolts 214. The lower surface of the rotating rod 213 is a hollow structure. The upper end of the telescopic rod 212 is connected to the hollow structure on the lower surface of the rotating rod 213. The fixing mechanism 23 is arranged on the upper surface of the rotating rod 213.

[0077] In this embodiment, if Figure 3 As shown, the vertical force arm 21 realizes the height adjustment of the vertical force arm 21 through the design of the fixed rod 211 and the telescopic rod 212. The inner side above the fixed rod 211 is a hollow structure, and a height positioning bolt 214 is arranged on its side. The telescopic rod 212 is connected to the top of the fixed rod 211 and is located in its hollow structure. The size of the telescopic rod 212 is adapted to the size of the hollow structure at the upper end of the fixed rod 211, so that the telescopic rod 212 can slide on the upper end of the fixed rod 211, so that the telescopic rod 212 can be reliably installed in the hollow structure above the fixed rod 211. A plurality of equally spaced height positioning holes 215 are designed on the side surface of 12. Under the condition that their size structures are compatible, when it is necessary to adjust the height of the telescopic rod 212, it is only necessary to loosen the height positioning bolt 214 on the right side of the fixing rod 211 to the unlocked state, adjust the position of the telescopic rod 212, and make the height positioning hole 215 that needs to be adjusted coincide with the position of the height positioning bolt 214. The height positioning hole 215 is designed with an internal thread structure, which is compatible with the external thread of the height positioning bolt 214. The height positioning bolt 214 is tightened into the height positioning hole 215 to achieve height adjustment.

[0078] A rotating rod 213 is designed at the upper end of the telescopic rod 212 to realize the rotation adjustment of the vertical force arm 21. During the replacement of the transformer, due to the presence of on-site equipment in the substation, its space is limited. At this time, it is necessary to adjust the angle of the horizontal force arm 22 so that it can adapt to the installation position of the transformer, which is also convenient for the actual operation of the replacement operator. The rotating rod 213 is designed at the upper end of the telescopic rod 212 to realize the angle adjustment, thereby realizing the angle adjustment of the fixing mechanism 23 at the upper end of the rotating rod 213 and the horizontal force arm 22, further improving the work efficiency of the operator.

[0079] Specifically, the horizontal force arm 22 includes a fixed force arm 221 and a telescopic force arm 222. One end of the fixed force arm 221 is fixedly installed in the fixing mechanism 23, and the other end is a hollow structure, and its side is provided with evenly distributed horizontal positioning holes 223. The telescopic force arm 222 is adapted to the shape and size of the hollow structure of the fixed force arm 221. A telescopic positioning bolt 224 is provided on the telescopic force arm 222. One end of the telescopic positioning bolt 224 is connected to the hollow structure of the fixed force arm 221, and a pulley mounting groove 24 is designed on the upper surface of the other end.

[0080] In this embodiment, if Figure 4As shown, due to the limitation of the spatial position of the substation where the transformer needs to be replaced, there is a certain difference in the distance between the transformer that needs to be replaced and the channel steel 4 in actual work. When the position of the vertical force arm 21 is fixed according to the fixed base 1, the position of the horizontal force arm 22 is also determined. The distance of the horizontal force arm 22 required for the transformer at different distances can be adjusted according to the above design. The telescopic force arm 222 can slide in the hollow structure of the fixed force arm 221. The position of the telescopic positioning bolt 224 on the telescopic force arm 222 in the horizontal positioning hole 223 of the fixed force arm 221 is adjusted to achieve the adjustment of the distance of the horizontal force arm 22. The telescopic positioning bolt 224 is of detachable design. After the position is adjusted, it is fixed to the internal thread connection of the telescopic force arm 222 on the horizontal positioning hole 223 to complete the adjustment so that the transformer at different distances can be hoisted and replaced.

[0081] In this embodiment, the vertical force arm 21 of the lifting frame 2 adopts the telescopic method of the height positioning bolt 214 and the height positioning hole 215 to achieve the height adjustment of the vertical force arm 21, and the height positioning bolt 214 is fixed at the appropriate position of the height positioning hole 215. The horizontal force arm 22 adopts the positioning method of the telescopic positioning bolt 224 and the horizontal positioning hole 223 to achieve the length adjustment of the horizontal force arm 22, and the telescopic positioning bolt 224 is fixed at the appropriate position of the horizontal positioning hole 223. The vertical force arm 21 and the horizontal force arm 22 are both adjusted by means of a bolt knob. The whole operation process is simple and convenient, the fixing structure is reliable and effective, and it is convenient for actual use on site, which improves the installation efficiency of the device. At the same time, it is suitable for the lifting of transformers of different specifications and sizes, and has a wide range of applications.

[0082] Specifically, the start and stop operations of the electric winch 31 are controlled by a remote controller.

[0083] Specifically, the hook 33 is an anti-drop hook.

[0084] In this embodiment, a remote controller is used to control the start and stop of the electric winch 31, so as to ensure that the operator is in a safe operating range during the lifting of the transformer, reduce the potential safety hazards during the lifting process, and the remote controller is simple and convenient to control.

[0085] In this embodiment, an anti-drop hook is used to further ensure the safe movement of the transformer during the lifting process to avoid safety problems caused by falling.

[0086] Embodiment 2

[0087] Specifically, the rotating rod 213 is manually rotated, and a positioning rod 216 is provided on the side. A rotation positioning hole 217 is provided on the upper end of the telescopic rod 212. The rotation positioning holes 217 are distributed along the circumference of the cross section of the telescopic rod 212. The positioning rod 216 is an L-shaped structure, and its short side can be extended into the rotation positioning hole 217. The diameter of the short side is adapted to the diameter of the rotation positioning hole 217.

[0088] In this embodiment, if Figure 3 , Figure 5 As shown, the rotating rod 213 is manually rotated, and the angle adjustment of the horizontal force arm 22 is achieved by fixing the positioning rod 216 at different rotation positioning holes 217 at the upper end of the telescopic rod 212. The rotation positioning function can be achieved manually, which is simple to operate and easy to use.

[0089] In this embodiment, an L-shaped positioning rod 216 is used, and its long side is used for adjustment, which is convenient for operators to rotate and adjust, saves labor, and is easy to operate.

[0090] Specifically, the angular interval of the circumferential distribution of the rotation positioning holes 217 is 15°.

[0091] In this embodiment, the distribution of the rotation positioning holes 217 with an angle interval of 15° can meet the actual transformer installation position at the substation site, and the transformer hoisting work can be completed with the highest efficiency after adjusting the angle of the horizontal force arm 22.

[0092] Embodiment 3

[0093] Specifically, the rotating rod 213 is electrically rotated, a motor is installed at the upper end of the telescopic rod 212 , and the output shaft of the motor is connected to the rotating rod 213 .

[0094] In this embodiment, the rotating rod 213 adopts electric rotation, and the angle of the horizontal force arm 22 is adjusted by controlling the start and stop of the motor to avoid manual intervention. The motor control angle can be selected according to the size of the motor's rotation angle to adjust the angle and further improve work efficiency.

[0095] Embodiment 4

[0096] On the basis of the above three embodiments, the transformer lifting device is mainly suitable for the transformer replacement stage, and needs to be actually installed on site at the substation. After the transformer is replaced, it needs to be disassembled. Therefore, in order to improve the working efficiency, the installation and disassembly method of the transformer lifting device of embodiment 4 is specially proposed.

[0097] In this embodiment, the installation and disassembly method clarifies the specific use process of the transformer lifting device, which is convenient for operators to complete their work more efficiently in actual use.

[0098] A method for installing and disassembling a transformer lifting device, the specific steps are as follows:

[0099] S01: Select a suitable location and install the fixed base 1.

[0100] Use the fastening bolts 13 to fix the upper fixing clamp plate 11 and the lower fixing clamp plate 12 to the channel steels 4 on both sides of the transformer hoisting position;

[0101] S02: Install the lifting frame 2,

[0102] Install the hoisting frame 2 in the mounting hole of the fixed base 1;

[0103] S03: Adjust the length of the horizontal lever arm 22,

[0104] Adjust the telescopic positioning bolt 224 on the telescopic force arm 222 to a suitable position of the horizontal positioning hole 223 and tighten it;

[0105] S04: Adjust the angle of the rotating rod 213;

[0106] S05: Adjust the height of the vertical lever arm 21,

[0107] Adjust the height positioning bolt 214 to a suitable position of the height positioning hole 215 and tighten it;

[0108] S06: Hoisting transformer,

[0109] Use the remote controller to control the electric hoist 31 to lower the hook 33, connect the transformer to the hook 33, and control the electric hoist 31 to lift the transformer to the installation height;

[0110] S07: Install the transformer,

[0111] The operator installs the transformer to the corresponding position;

[0112] S08: Adjust the lifting frame 2 to the minimum volume,

[0113] Adjust the height positioning bolt 214 to the lowest position of the height positioning hole 215 and tighten it, and adjust the telescopic positioning bolt 224 on the telescopic force arm 222 to the rightmost position of the horizontal positioning hole 223 and tighten it;

[0114] S09: Remove the lifting frame 2;

[0115] S10: Remove the fixed base 1.

[0116] Remove the upper fixing clamp plate 11 and the lower fixing clamp plate 12.

[0117] In this embodiment, if Figure 6 As shown, the above method is divided into an installation method and a disassembly method, and the operation sequence of the installation process is exactly opposite to that of the disassembly process.

[0118] The steps S01-S06 are an installation method, according to which the device is accurately installed at the corresponding position to complete the lifting work of the transformer, thereby completing the replacement of the transformer.

[0119] The steps S08-S10 are the disassembly method of the transformer lifting device. The disassembly is correctly completed according to these steps. First, the height of the vertical force arm 21 of the lifting frame 2 is adjusted to the lowest. The height at this time is convenient for the operator to adjust. Then, the length of the horizontal force arm 22 is adjusted to the shortest. This is when the volume of the entire lifting frame 2 is in the smallest state, which is convenient for carrying, thereby improving work efficiency.

[0120] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0121] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A transformer hoisting device, characterized in that: It comprises a fixed base (1), a lifting frame (2), and a transmission system (3). The fixed base (1) is fixedly mounted on the two side channel steels (4) at the bottom of the transformer by means of fastening bolts (13), and comprises an upper fixed clamping plate (11), a lower fixed clamping plate (12), and fastening bolts (13). The upper fixed clamping plate (11) and the lower fixed clamping plate (12) have the same structure, both of which are rectangular structures, with bolt fixing holes formed around them and a mounting hole formed in the middle. The hoisting frame (2) is installed in the mounting hole of the fixed base (1), and comprises a vertical force arm (21) and a horizontal force arm (22). The vertical force arm (21) is installed in the mounting hole of the fixed base (1), and a fixing mechanism (23) is arranged at the upper end of the vertical force arm (21). One end of the horizontal force arm (22) is connected to the fixing mechanism (23), and the other end extends outward. A pulley mounting groove (24) is arranged at one end of the horizontal force arm (22) away from the fixing mechanism (23). The transmission system (3) comprises an electric winch (31), a fixed pulley (32), a hook (33), and a rope (34); the electric winch (31) is fixedly mounted on the upper surface of a fixing mechanism (23) of a vertical arm (21); the fixed pulley (32) is mounted in a pulley mounting groove (24); the rope (34) connects the hook (33), the fixed pulley (32), and the electric winch (31); and the hook (33) is suspended below the pulley mounting groove (24) through the rope (34).

2. A transformer hoisting device according to claim 1, characterized in that: The vertical force arm (21) comprises a fixed rod (211), a telescopic rod (212), and a rotating rod (213); the fixed rod (211) is installed in the installation hole; the inner side above the fixed rod (211) is a hollow structure, and a height positioning bolt (214) is arranged on its side; the telescopic rod (212) is connected to the top of the fixed rod (211) and is located in its hollow structure; a plurality of height positioning holes (215) arranged at equal intervals are designed on the side of the telescopic rod (212); the height positioning holes (215) are adapted to the position and size of the height positioning bolts (214); the lower surface of the rotating rod (213) is a hollow structure; the upper end of the telescopic rod (212) is connected to the hollow structure on the lower surface of the rotating rod (213); and the fixing mechanism (23) is arranged on the upper surface of the rotating rod (213).

3. A transformer hoisting device according to claim 2, characterized in that: The rotating rod (213) is manually rotated, and a positioning rod (216) is arranged on the side. A rotation positioning hole (217) is arranged on the upper end of the telescopic rod (212). The rotation positioning holes (217) are distributed along the circumference of the cross section of the telescopic rod (212). The positioning rod (216) is an L-shaped structure, and its short side can extend into the rotation positioning hole (217). The diameter of the short side is adapted to the diameter of the rotation positioning hole (217).

4. A transformer hoisting device according to claim 3, characterized in that: The angular interval of the circumferential distribution of the rotation positioning holes (217) is 15°.

5. A transformer hoisting device according to claim 2, characterized in that: The rotating rod (213) is electrically rotated, a motor is installed on the upper end of the telescopic rod (212), and the output shaft of the motor is connected to the rotating rod (213).

6. A transformer hoisting device according to claim 1, characterized in that: The horizontal force arm (22) comprises a fixed force arm (221) and a telescopic force arm (222); one end of the fixed force arm (221) is fixedly installed in the fixing mechanism (23), and the other end is a hollow structure, and a side surface thereof is provided with evenly distributed horizontal positioning holes (223); the telescopic force arm (222) is adapted to the shape and size of the hollow structure of the fixed force arm (221); a telescopic positioning bolt (224) is provided on the telescopic force arm (222); one end of the telescopic positioning bolt (224) is connected to the hollow structure of the fixed force arm (221), and the other end is designed with a pulley mounting groove (24) on the upper surface.

7. A transformer hoisting device according to claim 1, characterized in that: The upper fixing clamping plate (11) and the lower fixing clamping plate (12) are made of Q235 carbon steel, and their length is greater than the distance between the channel steels (4) on both sides of the bottom of the mutual inductor.

8. The transformer hoisting device according to claim 1, characterized in that: The start and stop operations of the electric winch (31) are controlled by a remote controller.

9. A transformer hoisting device according to claim 1, characterized in that: The hook (33) is an anti-drop hook.

10. A method for installing and disassembling a transformer hoisting device, comprising the transformer hoisting device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S01: Select a suitable location and install the fixed base (1). Using fastening bolts (13), fix the upper fixing clamp plate (11) and the lower fixing clamp plate (12) to the channel steels (4) on both sides of the transformer hoisting position; S02: Install the lifting frame (2), Install the lifting frame (2) in the installation hole of the fixed base (1); S03: Adjust the length of the horizontal lever arm (22). Adjust the telescopic positioning bolt (224) on the telescopic force arm (222) to a suitable position of the horizontal positioning hole (223) and tighten it; S04: Adjust the angle of the rotating rod (213); S05: Adjust the height of the vertical lever arm (21). Adjust the height positioning bolt (214) to a suitable position of the height positioning hole (215) and tighten it; S06: Hoisting transformer, Using a remote controller to control an electric hoist (31) to lower a hook (33), connecting the mutual inductor to the hook (33), and controlling the electric hoist (31) to hoist the mutual inductor to an installation height; S07: Install the transformer, The operator installs the transformer to the corresponding position; S08: Adjust the lifting frame (2) to the minimum volume. Adjust the height positioning bolt (214) to the lowest position of the height positioning hole (215) and tighten it, and adjust the telescopic positioning bolt (224) on the telescopic force arm (222) to the rightmost position of the horizontal positioning hole (223) and tighten it; S09: Remove the lifting frame (2); S10: Remove the fixing base (1). Remove the upper fixing clamp plate (11) and the lower fixing clamp plate (12).

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