Folding type transformer rapid hoisting device and operation method thereof
The lightweight foldable transformer rapid hoisting device solves the problems of limited space, low efficiency, major safety hazards and high cost in traditional transformer replacement operations, and realizes efficient, safe and economical transformer replacement.
Patent Information
- Application Number
- CN202511142587.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-11-18
AI Technical Summary
Traditional transformer replacement work suffers from problems such as limited space, low efficiency, significant safety hazards, poor adaptability, and high costs, especially in confined spaces and complex environments where it is difficult to carry out efficiently.
The device employs a lightweight, foldable transformer rapid hoisting system, including a main support system, a moving and leveling system, and a hoisting and fixing system. Utilizing high-strength aluminum alloy material, a hand-cranked drive, and a telescopic arm design, it enables rapid deployment and operation without external power supply, adapting to narrow spaces and uneven ground.
It improves the space utilization and work efficiency of transformer replacement, reduces safety risks and equipment costs, enhances the convenience and safety of operation, expands adaptability by 60%, shortens operation time by 70%, and reduces the probability of overturning by 90%.
Smart Images
Figure CN120964657A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of power system substation equipment maintenance, and particularly relates to a special device for hoisting and replacing 110kV and below transformers and a working method thereof. BACKGROUND
[0002] The traditional transformer replacement operation has the following defects: 1. Limited space: there are live lines and switch devices above the transformer platform, and the crane arm cannot be unfolded; 2. Low efficiency: the crane needs to coordinate power-off and site leveling, and the deployment takes more than 4 hours; 3. Safety hazards: high-altitude hoisting is easy to collide with equipment, and external power supply is required; 4. Poor adaptability: large equipment is difficult to enter the field in mountainous areas and densely populated urban areas; 5. High cost: high crane rental fees and poor economic efficiency for small operations.
[0003] The present application provides a lightweight and quickly deployed transformer hoisting and replacing device, which solves the problems of difficult operation in narrow space, time-consuming deployment, and dependence on external power supply of traditional devices, and improves the efficiency and safety of transformer replacement. SUMMARY
[0004] The present application aims to provide a folding type transformer fast hoisting device and a working method thereof, which is suitable for narrow area scenes, improves space utilization, improves operation efficiency, and enhances safety.
[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a folding type transformer fast hoisting device, characterized in that it comprises a main support system, a moving and leveling system, a hoisting and fixing system; the main support system comprises a telescopic main support device and a support arm 15; the lower end of the telescopic main support device is fixed on the bottom horizontal rod 22 of the movable load-bearing base of the moving and leveling system; The support arm 15 comprises a horizontal rod, a left vertical rod 27, a right vertical rod 25, and a clamping groove plate 26, the clamping groove plate 26 is an inverted U-shaped structure, the upper end of the left vertical rod 27 is connected with the left end of the horizontal rod, the lower end of the left vertical rod 27 is fixedly connected with a clamping groove plate 26, the upper end of the right vertical rod 25 is connected with the right end of the horizontal rod, the lower end of the right vertical rod 25 is fixedly connected with a clamping groove plate 26, the middle part of the horizontal rod is hinged with the front end of the vertical support 1 of the hoisting and fixing system, the middle part of the horizontal rod and the front end of the vertical support 1 are both fixed with fixed insertion hole plates, and the horizontal rod is fixed by inserting a fixed insertion pin into the fixed insertion holes in the two fixed insertion hole plates; The moving and leveling system comprises a mobile load-bearing base, an unfolded long support 13, an unfolded short support 17, a hand-operated jack 11; the mobile load-bearing base comprises a roller 10, a handle 8, a bottom horizontal rod 22, and four bottom longitudinal fixed rods 23, the bottom surface of each bottom longitudinal fixed rod 23 is provided with a roller 10, the left two bottom longitudinal fixed rods 23 are respectively arranged at front and back positions, the left two bottom longitudinal fixed rods 23 are respectively fixedly connected with the left end of the bottom horizontal rod 22, the right two bottom longitudinal fixed rods 23 are respectively arranged at front and back positions, and the right two bottom longitudinal fixed rods 23 are respectively fixedly connected with the right end of the bottom horizontal rod 22; the unfolded long support 13 is hingedly connected to the two bottom longitudinal fixed rods 23 located at the front side of the bottom horizontal rod 22, and the front end of the unfolded long support 13 is fixedly provided with the hand-operated jack 11; the unfolded short support 17 is hingedly connected to the two bottom longitudinal fixed rods 23 located at the rear side of the bottom horizontal rod 22, and the rear end of the unfolded short support 17 is fixedly provided with the hand-operated jack 11; the handle 8 is fixedly installed on the telescopic main body support device of the main body support system. The hoisting and fixing system comprises a hand-operated rope winding mechanism 7, a hand-operated chain hoist 16, a longitudinal support 1, and a lifting lug 14; the rear end of the longitudinal support 1 is hingedly connected with the upper end of the telescopic arm 4 of the main body support system, the rear end of the longitudinal support 1 and the upper end of the telescopic arm 4 are both provided with a positioning pin insertion hole, and a fixing pin 3 is inserted into the positioning pin insertion hole; the hand-operated rope winding mechanism 7 is installed on the fixed arm 6 of the main body support system, the outer end of the steel wire rope 2 of the hand-operated rope winding mechanism 7 is fixedly connected with the middle part of the upper surface of the longitudinal support 1 by a fixing plate; the hand-operated chain hoist 16 is hung on the longitudinal support 1; the two lifting lugs 14 are fixedly installed on the main body support system.
[0006] Further, the telescopic main body support device comprises a fixed arm 6, a telescopic arm 4, a lifting device, and an inclined support rod 24, the fixed arm 6 is provided with a lifting hole in the height direction for the insertion of the telescopic arm 4, and the lower part of the telescopic arm 4 is inserted into the lifting hole from the upper end of the fixed arm 6; the lower end of the telescopic arm 4 is connected with the lifting device; the lower end of the fixed arm 6 is fixed on the middle part of the bottom horizontal rod 22 of the mobile load-bearing base, the upper left side of the fixed arm 6 is fixedly connected with the upper end of the left inclined support rod 24, the lower end of the left inclined support rod 24 is fixedly connected with the left part of the bottom horizontal rod 22 of the mobile load-bearing base, the upper right side of the fixed arm 6 is fixedly connected with the upper end of the right inclined support rod 24, and the lower end of the right inclined support rod 24 is fixedly connected with the right part of the bottom horizontal rod 22 of the mobile load-bearing base.
[0007] Further, the lifting device is a hand-operated lifting machine, which comprises a telescopic arm crank 12, a lifting rope, a lifting rope winding wheel, and a guide wheel, one end of the lifting rope is fixed on the lifting rope winding wheel, and the lower part of the lifting rope is wound on the lifting rope winding wheel, one end of the rotating shaft of the lifting rope winding wheel is fixed with the telescopic arm crank 12, the lifting rope winding wheel is fixed on the lower end of the fixed arm 6 by the base thereof, the guide wheel is installed on the upper end of the fixed arm 6, the other end of the lifting rope is inserted into the lifting hole from the upper end of the fixed arm 6 after winding around the guide wheel, and the other end of the lifting rope is fixedly connected with the lower end of the telescopic arm 4.
[0008] Further, the long support 13 and the short support 17 are both provided with a positioning pin insertion hole, and the bottom longitudinal fixed rod 23 is also provided with a positioning pin insertion hole at a corresponding position. Further, the two lifting lugs 14 are respectively fixed on the two inclined support rods 24.
[0009] Further, the upper part of the fixed arm 6 is provided with a buffer block 5 made of rubber.
[0010] Innovative highlights of the present application: 1. Lightweight folding structure: made of high-strength aluminum alloy material, the overall weight is reduced by 40%; after folding, the volume is compact, and a single person can push and move it, which is suitable for narrow distribution areas; 2. Quick deployment mechanism: ≤30 minutes from unfolding to completion of hoisting preparation, reverse operation of the recovery process and unfolding, greatly shortening the operation time; 3. Adaptation to narrow spaces: designed with a hand-operated drive and a telescopic arm, without the need for high-altitude hoisting space, and can be used in scenes with obstacles above transformers; 4. No external power supply design: pure mechanical drive (hand-operated rope winding, jack, and zip line), avoiding the risk of electric shock; 5. Terrain self-adaptive support: through the long support, the short support, and the hand-operated jack leveling, it can adapt to uneven ground and ensure the stability of hoisting.
[0011] The beneficial effects of the present application are: 1. Foldable, suitable for narrow distribution areas.
[0012] 2. Improved space utilization: no need for high-altitude hoisting space, solving the operation problem in scenes with wires and switches above transformers, expanding the application scenarios by 60%; 3. Improved operation efficiency: deployment and recovery time ≤30 minutes, 70% shorter than traditional equipment; 4. Enhanced safety: no external power supply design eliminates the risk of electric shock, and the four-point support and leveling mechanism reduces the overturning probability by 90%; 5. Improved operation convenience: a single person can complete the movement and core operation, reducing the demand for manpower; 6. Economic optimization: The high-strength aluminum alloy material extends the service life to more than 10 years, with a 100% reuse rate, reducing equipment procurement costs. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention in a folded state.
[0014] Figure 2 This is a schematic diagram of the structure of the present invention in its unfolded state.
[0015] Figure 3 This is a structural diagram of the present invention in use.
[0016] In the diagram: 1-Longitudinal brace, 2-Wire rope, 3-Fixing pin, 4-Telescopic arm, 5-Buffer block, 6-Fixing arm, 7-Hand-cranked rope winding mechanism, 8-Handle, 9-Positioning pin, 10-Roller, 11-Hand-cranked jack, 12-Telescopic arm crank handle, 13-Extended long support, 14-Lifting lug, 15-Support arm, 16-Hand-operated chain hoist, 17-Extended short support, 18-Cement pole, 19-Transformer platform, 20-Screw rod, 21-Transformer, 22-Bottom horizontal bar, 23-Bottom longitudinal fixing bar, 24-Diagonal brace, 25-Right vertical bar, 26-Slot plate, 27-Left vertical bar, 28-Operator. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Example 1 like Figure 1 , Figure 2 , Figure 3 As shown, a foldable transformer rapid hoisting device includes a main support system, a moving and leveling system, and a hoisting and fixing system; the main support system includes a telescopic main support device and a support arm 15; the lower end of the telescopic main support device is fixed to the bottom horizontal bar 22 of the movable load-bearing base of the moving and leveling system. The support arm 15 includes a horizontal bar, a left vertical bar 27, a right vertical bar 25, and a slot plate 26. The slot plate 26 has an inverted U-shaped structure (the slot plate 26 has a screw hole for screwing in the screw 20). The upper end of the left vertical bar 27 is connected to the left end of the horizontal bar (it can be hinged and then fixed by a pin, or it can be fixed). The lower end of the left vertical bar 27 is fixedly connected to the slot plate 26. The upper end of the right vertical bar 25 is connected to the right end of the horizontal bar (it can be hinged and then fixed by a pin, or it can be fixed). (Using a fixed connection), the lower end of the right vertical rod 25 is fixedly connected to a slot plate 26. The middle part of the horizontal rod is hinged to the front end of the longitudinal support (i.e., the longitudinal support rod) 1 of the hoisting and fixing system (both are equipped with hinge plates for hinge). The middle part of the horizontal rod and the front end of the longitudinal support 1 are both fixed with fixing insertion plates. The horizontal rod fixing pin is inserted into the fixing insertion holes on the two fixing insertion plates to fix the horizontal rod and the longitudinal support 1 (when the horizontal rod fixing pin is pulled out, the horizontal rod and the longitudinal support 1 are in a hinged state, and the horizontal rod can be in a folded state). The moving and leveling system includes a movable load-bearing base, an extended long support 13, an extended short support 17, and a hand-cranked jack 11. The movable load-bearing base includes rollers 10, handles 8, bottom transverse rods 22, and bottom longitudinal fixing rods 23. There are four bottom longitudinal fixing rods 23 (or one long bottom longitudinal fixing rod on the left and one on the right; in this embodiment, four short ones are used). Each bottom longitudinal fixing rod 23 has a roller (which can be a caster wheel) 10 mounted on its bottom surface. The two bottom longitudinal fixing rods 23 on the left are arranged in a front-back position, and the two bottom longitudinal fixing rods 23 on the left are fixedly connected to the left end of the bottom transverse rod 22 (e.g., by welding). The two bottom longitudinal fixing rods 23 on the right are fixedly connected to the left end of the bottom transverse rod 22. 3 are arranged in front and back positions respectively. The two bottom longitudinal fixing rods 23 on the right are fixedly connected to the right end of the bottom transverse rod 22 (e.g., by welding). The two bottom longitudinal fixing rods 23 located in front of the bottom transverse rod 22 are respectively hinged with extended long supports 13, and the front end of the extended long supports 13 is fixedly installed with a hand-cranked jack 11. The two bottom longitudinal fixing rods 23 located behind the bottom transverse rod 22 are respectively hinged with extended short supports 17, and the rear end of the extended short supports 17 is fixedly installed with a hand-cranked jack 11. The handle 8 is fixedly installed on the telescopic main support device of the main support system (furthermore, the handle 8 is fixedly installed on the right diagonal brace, the fixed arm 6 and the right diagonal brace 24). Furthermore, both the extended long support 13 and the extended short support 17 are provided with positioning pin holes, and the corresponding positions on the bottom longitudinal fixing rod 23 are also provided with positioning pin holes. The positioning pin 9 is inserted into the positioning pin hole (after removing the positioning pin 9, the extended long support 13 and the extended short support 17 can be rotated and folded). The hoisting and fixing system includes a hand-cranked rope winding mechanism 7, a hand-chained hoist 16, a longitudinal support 1, and lifting lugs 14. The rear end of the longitudinal support 1 is hinged to the upper end of the telescopic arm 4 of the main support system. Both the rear end of the longitudinal support 1 and the upper end of the telescopic arm 4 are provided with positioning pin holes, and fixing pins 3 are inserted into the positioning pin holes (the longitudinal support 1 can be folded after removing the fixing pins 3). The front end of the longitudinal support 1 is hinged to the middle of the crossbar of the support arm 15 of the main support system. The hand-cranked rope winding mechanism 7 is installed on the fixed arm 6 of the main support system. The outer end of the wire rope 2 of the hand-cranked rope winding mechanism 7 is fixedly connected to the upper middle of the longitudinal support 1 by a fixing plate (guide wheels can be installed on the fixed arm 6 and the longitudinal support 1, and the outer end of the wire rope 2 passes through the guide wheels). The hand-chained hoist 16 is suspended on the longitudinal support 1. There are two lifting lugs 14, which are fixed (e.g., welded) on the main support system respectively (furthermore, the two lifting lugs 14 are respectively fixed on two diagonal braces 24).
[0019] The telescopic main support device includes a fixed arm 6, a telescopic arm 4, a lifting device, and a diagonal brace 24. The fixed arm 6 has a lifting hole along its height direction for inserting the telescopic arm 4. The lower part of the telescopic arm 4 is inserted into the lifting hole from the upper end of the fixed arm 6. The lower end of the telescopic arm 4 is connected to the lifting device. The lower end of the fixed arm 6 is fixed (e.g., welded) to the middle of the bottom transverse rod 22 of the movable load-bearing base. The upper left side of the fixed arm 6 is fixedly connected to the upper end of the left diagonal brace 24, and the lower end of the left diagonal brace 24 is fixedly connected to the left side of the bottom transverse rod 22 of the movable load-bearing base. (For ease of description...) Figure 3 (The left side is left, the right side is right, the side closer to the operator 28 is back, and the side farther from the operator 28 is front). The upper right side of the fixed arm 6 is fixedly connected to the upper end of the right diagonal brace 24, and the lower end of the right diagonal brace 24 is fixedly connected to the right side of the bottom horizontal bar 22 of the movable load-bearing base.
[0020] The lifting device is a hand-cranked lifting machine, which includes a telescopic arm handle 12, a lifting rope, a lifting rope reel, and a guide wheel. One end of the lifting rope is fixed to the lifting rope reel, and the lower part of the lifting rope is wound around the lifting rope reel. One end of the rotating shaft of the lifting rope reel is fixed to the telescopic arm handle 12 (rotating the telescopic arm handle 12 allows the upper part of the lifting rope to retract or extend towards the lifting rope reel, thereby driving the telescopic arm 4 to move upward or downward). The lifting rope reel is fixed to the lower end of the fixed arm 6 by its base. The guide wheel is installed at the upper end of the fixed arm 6. The other end of the lifting rope passes around the guide wheel and is inserted into the lifting hole from the upper port of the fixed arm 6. The other end of the lifting rope is fixedly connected to the lower end of the telescopic arm 4 (i.e., the lifting rope can lift the telescopic arm 4). The hand-cranked lifting machine can also be electrically powered, i.e., one end of the rotating shaft of the lifting rope reel is connected to the output shaft of the motor by a coupling, and the motor is connected to a battery.
[0021] The telescopic main support device can also adopt various existing lifting structure forms.
[0022] Furthermore, a buffer block 5 is installed on the upper part of the fixed arm 6, and the buffer block 5 is made of rubber.
[0023] The main support system, movable load-bearing base, extended long support, extended short support, handles, etc. are made of high-strength aluminum alloy.
[0024] Main support system: (1) Includes a fixed arm 6, a telescopic arm 4, and a support arm 15: ① The fixed arm 6 is an aluminum alloy rectangular tube, which serves as the main frame of the device and is connected to the movable load-bearing base at the bottom; ② The telescopic arm 4 is nested inside the fixed arm 6, and the height adjustment from 0.5 to 2m is achieved by driving the telescopic arm crank 12. The top of the telescopic arm is connected to the longitudinal support 1. ③ One end of the support arm 15 is hinged to the longitudinal brace 1, and the other end is fixed to the channel steel of the transformer platform 19 by the screw 20, bearing the hoisting reaction force.
[0025] (2) Connection relationship: The telescopic arm 4 and the fixed arm 6 are connected by a sliding groove; the support arm 15 and the longitudinal brace 1 are connected by a hinge, forming a stable triangular structure after unfolding.
[0026] 2. Movement and leveling system: (1) Includes a movable load-bearing base (including rollers 10 and handles 8), an extended long support 13, an extended short support 17, and a hand-cranked jack 11: ① The roller 10 is a universal wheel with brake, which is installed at the bottom of the base and works with the handle 8 to move and position the device; ② The long support 13 and the short support 17 are symmetrically distributed on both sides of the base. After unfolding, they are fixed by the positioning pin 9 to form a four-point support. ③ The hand-cranked jack 11 is installed at the bottom of the support and its height can be finely adjusted (adjustment range ±100mm) to achieve horizontal calibration of the device.
[0027] 3. Lifting and securing system: (1) Includes a hand-cranked rope winding mechanism (including 2 steel wire ropes) 7, a hand-operated chain hoist 16, a longitudinal brace 1, and a lifting lug 14: ① The hand-cranked rope winding mechanism 7 is fixed to the fixed arm 6 and connected to the longitudinal support 1 through the steel wire rope 2, controlling the horizontal unfolding and locking of the longitudinal support (fixed pin 3). ② The hand chain hoist 16 is suspended from the longitudinal support 1 and connected to the transformer 21 via a sling for hoisting; ③ Lifting lugs 14 are symmetrically distributed on both sides of the device and are used for auxiliary transportation by the truck crane.
[0028] 4. Buffer protection components: (1) The buffer block (5) is made of rubber and is installed at the connection between the telescopic arm (4) and the fixed arm (6) to reduce the impact noise and wear during telescopic movement.
[0029] Working principle: 1. The device is transported to the site by a truck crane and moved to the work point using rollers 10 and handles 8; 2. Unfold the long support 13 and the short support 17, insert the positioning pin 9 to fix them, and level them by hand-cranking jack 11; 3. Operate the hand-cranked rope winding mechanism 7 to unfold the longitudinal support 1 and lock it with the fixing pin 3; unfold the support arm 15 and fix it to the transformer platform 19 with the screw 20; 4. Crank the telescopic arm handle 12 to raise the telescopic arm 4, so that the support arm 15 can bear the load stably; use the chain hoist 16 to lift the transformer 21 to complete the replacement.
[0030] A method for operating a foldable transformer rapid hoisting device includes the following steps: 1) Site preparation: (1) Clean the channel steel bolt holes of transformer platform 19 to ensure that bolt 20 can be anchored; (2) The ground flatness error is ≤5°, which can be compensated by hand-cranked jack 11; 2) Equipment transfer and placement: (1) Use slings to attach to the lifting lugs 14 of the foldable transformer quick lifting device, and use a truck crane to lift the device to a flat ground; (2) Unlock the brake on roller 10 and push handle 8 to move the folding transformer quick hoisting device to the working position next to transformer 21; 3) Deployment of the support system: (1) Manually rotate and unfold the long support 13 and unfold the short support 17 to a horizontal position, and insert the positioning pin 9 to lock them; (2) Rotate the hand-cranked jack 11 to adjust the height of each support so that the main body of the foldable transformer quick hoisting device is kept horizontal (monitored by a level instrument). 4) Deployment of hoisting mechanism: (1) Operate the hand-cranked rope winding mechanism 7 to release the wire rope 2, so that the longitudinal support 1 rotates to the horizontal position and inserts the fixing pin 3; (2) Unfold the support arm 15 so that the end of the slot plate 26 fits into the channel steel of the transformer platform 19, and tighten the screw 20 to fix it. 5) Transformer hoisting: (1) Shake the telescopic arm handle 12 to raise the telescopic arm 4 to a suitable height to ensure that the support arm 15 is stable under load; (2) Connect the hook of the chain hoist 16 to the transformer 21, and slowly pull the chain to complete the hoisting (replacing the old transformer or installing a new transformer). 6) Equipment recycling: (1) Operate in the reverse order of unfolding: remove screw 20, retract support arm 15, unlock longitudinal brace 1, retract telescopic arm 4, retract support, and lock roller 10.
[0031] Alternative solution: 1. Drive method replacement: (1) Replace the hand-cranked lift with an electric push rod (with battery) to improve the adjustment speed and adapt to emergency repair scenarios; 2. Replacement of support structure: (1) Use hydraulic support legs to replace hand-cranked jacks to achieve automatic leveling and adapt to terrain with greater slope (≤15°). 3. Lifting component replacement: (1) Replace the manual chain hoist with an electric hoist and use wireless remote control to reduce the risk of close-range operation.
Claims
1. A foldable transformer rapid hoisting device, characterized in that... It includes a main support system, a moving and leveling system, and a hoisting and fixing system; the main support system includes a telescopic main support device and a support arm (15); the lower end of the telescopic main support device is fixed on the bottom horizontal bar (22) of the movable load-bearing base of the moving and leveling system; The support arm (15) includes a horizontal bar, a left vertical bar (27), a right vertical bar (25), and a slot plate (26). The slot plate (26) is an inverted U-shaped structure. The upper end of the left vertical bar (27) is connected to the left end of the horizontal bar. The lower end of the left vertical bar (27) is fixedly connected to a slot plate (26). The upper end of the right vertical bar (25) is connected to the right end of the horizontal bar. The lower end of the right vertical bar (25) is fixedly connected to a slot plate (26). The middle part of the horizontal bar is hinged to the front end of the longitudinal support (1) of the hoisting and fixing system. The middle part of the horizontal bar and the front end of the longitudinal support (1) are both fixed with fixing pin plates. The horizontal bar fixing pin is inserted into the fixing pin holes on the two fixing pin plates to fix the horizontal bar and the longitudinal support (1). The moving and leveling system includes a movable load-bearing base, an extended long support (13), an extended short support (17), and a hand-cranked jack (11). The movable load-bearing base includes rollers (10), a handle (8), a bottom transverse bar (22), and a bottom longitudinal fixing bar (23). There are four bottom longitudinal fixing bars (23). Each bottom longitudinal fixing bar (23) has a roller (10) installed on its bottom surface. The two bottom longitudinal fixing bars (23) on the left are arranged in front and behind positions respectively. The two bottom longitudinal fixing bars (23) on the left are fixedly connected to the left end of the bottom transverse bar (22) respectively. The two bottom longitudinal fixing bars (23) on the right are fixedly connected to the left end of the bottom transverse bar (22). Arranged in front and back positions respectively, the two bottom longitudinal fixing rods (23) on the right are fixedly connected to the right end of the bottom transverse rod (22); the two bottom longitudinal fixing rods (23) located in front of the bottom transverse rod (22) are respectively hinged with extended long supports (13), and the front end of the extended long supports (13) is fixedly installed with a hand-cranked jack (11); the two bottom longitudinal fixing rods (23) located behind the bottom transverse rod (22) are respectively hinged with extended short supports (17), and the rear end of the extended short supports (17) is fixedly installed with a hand-cranked jack (11); the handle (8) is fixedly installed on the telescopic main support device of the main support system; The hoisting and fixing system includes a hand-cranked rope winding mechanism (7), a hand-chained hoist (16), a longitudinal brace (1), and lifting lugs (14). The rear end of the longitudinal brace (1) is hinged to the upper end of the telescopic arm (4) of the main support system. The rear end of the longitudinal brace (1) and the upper end of the telescopic arm (4) are provided with positioning pin holes, and the fixing pin (3) is inserted into the positioning pin holes. The hand-cranked rope winding mechanism (7) is installed on the fixing arm (6) of the main support system. The outer end of the wire rope (2) of the hand-cranked rope winding mechanism (7) is fixedly connected to the upper middle part of the longitudinal brace (1) by a fixing plate. The hand-chained hoist (16) is suspended on the longitudinal brace (1). There are two lifting lugs (14), and the two lifting lugs (14) are fixedly installed on the main support system respectively.
2. The foldable transformer rapid hoisting device according to claim 1, characterized in that, The telescopic main support device includes a fixed arm (6), a telescopic arm (4), a lifting device, and a diagonal brace (24). The fixed arm (6) has a lifting hole along the height direction for inserting the telescopic arm (4). The lower part of the telescopic arm (4) is inserted into the lifting hole from the upper end of the fixed arm (6). The lower end of the telescopic arm (4) is connected to the lifting device. The lower end of the fixed arm (6) is fixed to the middle of the bottom horizontal bar (22) of the movable load-bearing base. The upper left side of the fixed arm (6) is fixedly connected to the upper end of the left diagonal brace (24). The lower end of the left diagonal brace (24) is fixedly connected to the left side of the bottom horizontal bar (22) of the movable load-bearing base. The upper right side of the fixed arm (6) is fixedly connected to the upper end of the right diagonal brace (24). The lower end of the right diagonal brace (24) is fixedly connected to the right side of the bottom horizontal bar (22) of the movable load-bearing base.
3. The foldable transformer rapid hoisting device according to claim 2, characterized in that, The lifting device is a hand-cranked lifting machine, which includes a telescopic arm handle (12), a lifting rope, a lifting rope reel, and a guide wheel. One end of the lifting rope is fixed to the lifting rope reel, and the lower part of the lifting rope is wound around the lifting rope reel. One end of the rotating shaft of the lifting rope reel is fixed to the telescopic arm handle (12). The lifting rope reel is fixed to the lower end of the fixed arm (6) by its base. The guide wheel is installed at the upper end of the fixed arm (6). The other end of the lifting rope passes around the guide wheel and is inserted into the lifting hole from the upper port of the fixed arm (6). The other end of the lifting rope is fixedly connected to the lower end of the telescopic arm (4).
4. The foldable transformer rapid hoisting device according to claim 1, characterized in that, Both the extended long support (13) and the extended short support (17) are provided with positioning pin holes, and the corresponding positions on the bottom longitudinal fixing rod (23) are provided with positioning pin holes, and the positioning pin (9) is inserted into the positioning pin hole.
5. The foldable transformer rapid hoisting device according to claim 1, characterized in that, Two lugs (14) are fixed to two diagonal braces (24) respectively.
6. The foldable transformer rapid hoisting device according to claim 1, characterized in that, A buffer block (5) is installed on the upper part of the fixed arm (6), and the buffer block (5) is made of rubber.
7. A method for operating a foldable transformer rapid hoisting device, comprising the following steps: 1) Site preparation: (1) Clean the channel steel bolt holes of the transformer platform (19) to ensure that the bolts (20) can be anchored; (2) The ground flatness error is ≤5°, which can be compensated by hand-cranked jack (11); 2) Equipment transfer and placement: (1) Use slings to attach to the lifting lugs (14) of the folding transformer quick lifting device, and use a truck crane to lift the device to a flat ground; (2) Unlock the brake on the roller (10) and push the handle (8) to move the folding transformer quick hoisting device to the working position next to the transformer (21); 3) Deployment of the support system: (1) Manually rotate the long support (13) and the short support (17) to a horizontal position, and insert the positioning pin (9) to lock them; (2) Rotate the hand-cranked jack (11) to adjust the height of each support so that the main body of the folding transformer quick hoisting device remains horizontal; 4) Deployment of hoisting mechanism: (1) Operate the hand-cranked rope winding mechanism (7) to release the wire rope (2), so that the longitudinal support (1) rotates to the horizontal position and inserts the fixing pin (3); (2) Unfold the support arm (15) so that the end of the slot plate (26) fits into the channel steel of the transformer platform (19), and tighten the screw (20) to fix it; 5) Transformer hoisting: (1) Shake the telescopic arm handle (12) to raise the telescopic arm (4) to a suitable height and ensure that the support arm (15) is stable under load; (2) Connect the hook of the hand chain hoist (16) to the transformer (21) and slowly pull the chain to complete the hoisting; 6) Equipment recycling: (1) Operate in the reverse order of unfolding: remove screw (20), retract support arm (15), unlock longitudinal brace (1), retract telescopic arm (4), retract support, and lock roller (10).