A transformer hoisting device

Abstract

The utility model discloses a transformer hoisting device mainly relates to the power station equipment installation technical field. Including the beam, the both ends of beam top side are equipped with the upper lifting hole respectively, the upper lifting hole is hung with the lifting cable, the both ends of beam bottom side are equipped with the lower lifting hole respectively, the lower lifting hole is hung with the lifting belt or the lifting cable, the both ends of beam are equipped with the length direction same direction extension's rebates respectively, the rebates are hinged with the swing arm, the inner end of swing arm is located in the rebates and the outer end of swing arm exceeds the both ends of beam, the outer end rotatable mounting of swing arm has the vertical guide pulley of axial, be equipped with the elastic element between swing arm and rebates, the elastic element makes swing arm keep with beam and keep static same direction, and when swing arm swings, the elastic element has the elastic force of making swing arm reset for with beam same direction. The utility model has the beneficial effect at in narrow space to the hoisting path can be in the middle direction, prevents and twists and turns and hangs the partiality.

Description

Technical Field

[0001] This utility model relates to the field of power plant equipment installation technology, specifically a transformer hoisting device. Background Technology

[0002] In the actual installation of transformer distribution boxes, hoisting operations in narrow spaces are a very common and critical part, especially in urban buildings, basements, high-rise buildings, or renovations of old communities. In all these cases, it is necessary to consider the step of placing the distribution box in a narrow space during hoisting operations.

[0003] Common restrictions on hoisting paths include substation walls used for installing distribution boxes, and other existing indoor facilities such as beams and corners. Given that transformers or distribution boxes weigh between 500kg and 2t, and require extra attention to safety and integrity, any deviation from a centered hoisting route or swaying within the confined space before landing could cause equipment to collide with walls, resulting in damage and compromising hoisting safety. Utility Model Content

[0004] The purpose of this invention is to provide a transformer hoisting device that can center and guide the hoisting path in narrow spaces, preventing hoisting deviation and twisting.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A transformer hoisting device includes a lifting beam with upper lifting holes at both ends of the top side of the beam, through which slings are hooked. Lower lifting holes are located at both ends of the bottom side of the beam, through which slings or ropes are hooked.

[0007] Both ends of the lifting beam are provided with slots extending in the same direction as its length. A swing arm is hinged in the slot. The inner end of the swing arm is located in the slot and the outer end of the swing arm extends beyond both ends of the lifting beam. A guide wheel with a vertical axis is rotatably installed at the outer end of the swing arm. An elastic element is provided between the swing arm and the slot. The elastic element keeps the swing arm in a static direction with the lifting beam. When the swing arm swings, the elastic element has an elastic force that returns the swing arm to the same direction as the lifting beam.

[0008] The slot is provided with hinge seats near both ends of the lifting beam. The swing arm is provided with a mounting shaft that is rotatably connected to the hinge seats. The elastic element is a torsion spring, which is mounted on the mounting shaft and acts between the swing arm and the slot.

[0009] On the bottom side of the hanging beam near both ends, there are flat plates extending horizontally outwards. A sliding groove is slidably fitted on the outer side of the flat plate. The bottom of the sliding groove is connected as an integral structure through a bottom plate. Above the sliding groove, there is a vertical plate which is vertically arranged on both sides of the groove opening.

[0010] A fastening bolt is threaded through the side wall of the sliding groove and abuts against the surface of the flat plate at its inner end. The bottom side of the vertical plate is fixed on the upper side of the sliding groove.

[0011] Or;

[0012] Multiple jack holes penetrate through the edge of the flat plate, and the jack holes are equidistantly arranged along the length direction of the flat plate. A fastening bolt is penetrated and fitted on the sliding groove, and the fastening bolt is movably inserted into the jack hole.

[0013] Lower hanging holes are respectively provided at both ends of the outer side of the flat plate.

[0014] The sliding groove is C-shaped and is slidably connected to the outer side of the flat plate. A gap located in the center of the hanging beam is formed between the two flat plates, and the length of the gap is greater than the length of the sliding groove.

[0015] The sliding groove is C-shaped and is slidably connected to the outer side of the flat plate. The bottom side of the sliding groove is connected through a bottom plate, and the bottom plate is eccentrically arranged at one end of the sliding groove, so that the two sliding grooves and the bottom plate form a "匚" - shaped structure. Two lower hanging plates are symmetrically provided near the outer end of the flat plate. The lower hanging plates are located inside the "匚" - shaped structure, and multiple lower hanging holes are provided on the lower hanging plates.

[0016] A circular hole penetrating the hanging beam up and down is provided on the hinge seat. Multiple shaft holes are provided on the swing arm along its length direction. An extension plate is provided at one end of the swing arm located inside the groove opening. The mounting shaft is detachably installed relative to the shaft hole and the circular hole. Pin holes are respectively provided at the bottom end and the top end of the hinge shaft, and positioning pins are fitted in the pin holes.

[0017] Mounting plates are provided on the top side of the sliding groove. There are two mounting plates on the same side and are respectively arranged at both ends of the sliding groove. The mounting plates are strip-shaped plates and the length direction corresponds to the width direction of the hanging beam. Multiple positioning holes are provided on the mounting plates along their length directions. Two mounting rods extending downwards are welded and fixed on the vertical plate, and the mounting rods penetrate through the positioning holes.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The lifting beam optimizes the lifting angle of slings / slings, improving the stability of lifting large equipment. The outward-extending swing arms at both ends of the beam, combined with elastic return capabilities, allow for passive swinging in narrow spaces, working in conjunction with walls and other obstacles. This swinging adapts to the size of the confined space while the feedback elastic force helps center the beam relative to the narrow area, guiding the lifting path and avoiding the dangers and uncertainties of manual pulling, thus improving work quality and safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of Embodiment 2 of the present invention.

[0022] Figure 3 This is a schematic diagram of Embodiment 3 of this utility model.

[0023] Figure 4 This is a bottom schematic diagram of Embodiment 3 of this utility model.

[0024] Figure 5 This is a schematic diagram of the limiting frame of Embodiment 3 of this utility model.

[0025] Figure 6 This is a schematic diagram of the application of this utility model in a concentrated situation (the top is the hanging deviation, the middle is the hanging tilt, and the bottom is the guiding straightening into a narrow space).

[0026] The labels shown in the attached diagram:

[0027] 1. Lifting beam; 2. Upper lifting hole; 3. Lower lifting hole; 4. Flat plate; 5. Notch; 6. Groove; 7. Swing arm; 8. Guide wheel; 9. Hinge seat; 10. Mounting shaft; 11. Positioning pin; 12. Extension plate; 13. Shaft hole; 14. Slide groove; 15. Base plate; 16. Fastening bolt; 17. Mounting plate; 18. Positioning hole; 19. Vertical plate; 20. Mounting rod; 21. Insertion hole. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0029] Example 1:

[0030] In a substation environment, the core challenge of hoisting equipment in confined spaces is that "the equipment must be fully installed in the operating area, but the permanent access provided by the civil engineering can no longer be expanded." Therefore, a typical working condition is as follows: the indoor 10kV substation has only one fire door or is temporarily left unsealed, and cable trenches are constructed on the ground. The existing method is to transport the equipment by vehicle to a nearby location, close to the hoisting area, and then hoist it outdoors using lifting equipment for installation indoors. Temporary platforms can also be built and used for assistance.

[0031] This hoisting process requires close manual monitoring of the equipment's attitude and position. If the hoisting path is not centered relative to the indoor environment, it needs to be straightened and adjusted promptly. Furthermore, in smaller power plants, horizontal rotation and lateral swaying of the equipment may cause it to collide with walls, resulting in damage. Therefore, manual assistance is inherently more dangerous than hoisting heavy equipment.

[0032] Therefore, this hoisting device is designed to handle the hoisting of transformers in confined spaces. Its main structure includes:

[0033] 1. Lifting beam, 7. Swing arm, limit frame.

[0034] The lifting beam 1 is a straight-line extending beam with an I-shaped cross-section structure to enhance support strength.

[0035] The top two ends of the lifting beam 1 are respectively provided with upper lifting holes 2, and lifting ropes are hooked on the upper lifting holes 2. The upper lifting holes 2 are connected to the hooks of the equipment through the lifting ropes. The top of the lifting ropes is hooked to the hooks, forming a triangular lifting structure with the lifting beam 1.

[0036] The bottom side of the lifting beam 1 is provided with a horizontally extending plate 4 near both ends. The plate 4 can increase the width of the bottom of the lifting beam 1. The two ends of the outer side of the plate 4 are respectively provided with lower lifting holes 3. The lower lifting holes 3 are hooked and fitted with slings or ropes. The slings or ropes are used to hook onto the transformer. By widening the structure, the hooking distance between the two slings on the same side is increased, thereby improving the stability of the lifting.

[0037] The two ends of the lifting beam 1 are respectively provided with slots 6, and the length direction of the slots 6 is set in the same direction as the lifting beam 1.

[0038] The swing arm 7 is disposed within the slot 6, and the length of the swing arm 7 is longer than that of the slot 6. Therefore, the outer end of the swing arm 7 is located deep outside the lifting beam 1. A guide wheel 8 is rotatably mounted on the outer end of the swing arm 7, and the axis of the guide wheel 8 is vertical.

[0039] The slot 6 is provided with hinge seats 9 at both ends near the lifting beam 1. The swing arm 7 is provided with a mounting shaft 10 at one-third of its position. The mounting shaft 10 is rotatably connected to the hinge seat 9. A torsion spring is installed on the mounting shaft 10. The torsion arms of the torsion spring cooperate with the swing arm 7 and the hinge seat 9 respectively. For example, one torsion arm is fixed relative to the swing arm 7 and the other torsion arm is fixed relative to the lifting beam 1. Based on the torsion spring, the swing arm 7 is set in the same direction as the lifting beam 1 when no external force is applied. When the swing arm 7 is pushed and swung, the torsion spring has an elastic force that makes the swing arm 7 return to the same direction as the lifting beam 1.

[0040] Under the above structure, it is best to match the length of the lifting beam 1 with the length of the equipment. This ensures that both ends of the lifting beam 1 can be properly installed at both ends of the equipment, and the angle between the slings / slings and the vertical line is small, resulting in stable and safe lifting. The swing arms extend outwards from both ends of the lifting beam 1, providing space and protection for both ends of the equipment. When entering a narrow space, the swing arms 7 on both sides contact the wall. Guide wheels 8 guide the contact trajectory, quickly transmitting the contact force and directing it as the swing of the swing arms 7. The swing of the swing arms 7 adapts to the distance between the walls on both sides of the narrow space, and the torsion spring's restoring elastic force on the swing arms 7 helps to center the auxiliary lifting beam 1 relative to the narrow space. Furthermore, when the equipment is not centered or twisted, the torsion spring on the compressed side increases its energy storage, which also assists in correction and centering. This helps stabilize the process of entering the room and helps to center the route as much as possible.

[0041] If, within a known spatial distance, in order to prevent the swing arm 7 from swinging excessively and causing the equipment to deviate from its centered position or to twist excessively, a limit bracket can be used at the bottom of the lifting beam 1 to constrain the maximum swing angle of the swing arm 7.

[0042] The limiting frame is an integral structure, including two opposing sliding grooves 14. The sliding grooves 14 are C-shaped and slidably connected to the outer side of the plate 4. The bottom side of the sliding grooves 14 is connected through a base plate 15. The top side of the sliding grooves 14 is provided with a vertical plate 19. The vertical plate 19 is located on both sides of the lifting beam 1 to limit the inner end of the swing arm 7. When the swing arm 7 swings to the point where its inner end contacts the vertical plate 19, it cannot swing. Thus, while being able to flexibly adapt to and guide the centered hoisting path, it can also avoid excessive swinging and prevent one side of the equipment from being too close to the wall or excessively twisted.

[0043] A fastening bolt 16 is threaded through the side wall of the slide groove 14, and the inner end of the fastening bolt 16 abuts against the surface of the plate 4 to constrain the position of the limit frame.

[0044] The two flat plates 4 form a notch 5 in the center of the lifting beam 1. The notch 5 facilitates the disassembly or use of the limit frame. The limit frame can be quickly and easily engaged by sliding at the notch 5, making it convenient and flexible to use.

[0045] Example 2:

[0046] Based on Embodiment 1, the hinge seat 9 has a circular hole through which the lifting beam 1 passes vertically. The swing arm 7 has multiple shaft holes 13 along its length. The inner end of the swing arm 7 has an extension plate 12, which can cooperate with the limiting frame to limit the swing of the swing arm 7 when the last shaft hole 13 is in use. The mounting shaft 10 is detachably installed. The mounting shaft 10 passes through the lower hinge seat 9, a certain shaft hole 13, and the upper hinge seat 9 in sequence and is fitted with a torsion spring. The bottom and top ends of the hinge shaft are respectively provided with pin holes. The pin holes are fitted with positioning pins 11. The cooperation between the positioning pins 11 and the mounting shaft 10 allows for convenient disassembly and assembly. By installing it in different shaft hole 13 positions, the extension range of the installed swing arm 7 at both ends of the lifting beam 1 can be adjusted, and the position of the limiting frame can be adjusted to maintain the constraint on the swing angle of the swing arm 7.

[0047] Example 3:

[0048] In this example, the connection between the limiting frame and the lifting beam 1 adopts a different structure than that in Embodiment 1.

[0049] The limiting frame includes two opposing sliding grooves 14. The sliding grooves 14 are C-shaped and slidably connected to the outer side of the plate 4. The bottom side of the sliding grooves 14 is connected by a base plate 15. The base plate 15 is eccentrically located at one end of the sliding grooves 14 and is located away from the outer end of the lifting beam 1, so that the two sliding grooves 14 and the base plate 15 form a "U"-shaped structure. The plate 4 is symmetrically provided with two lower hanging plates near its outer end. The lower hanging plates are located within the "U"-shaped structure and do not affect the position adjustment of the limiting plate. The lower hanging plates are provided with multiple lower hanging holes 3 to facilitate the adjustment of the hook and engagement position of the sling according to the equipment conditions.

[0050] The top side of the slide 14 is provided with a mounting plate 17. There are two mounting plates 17 on the same side, which are respectively set at both ends of the slide 14. The mounting plate 17 is a strip plate and its length direction corresponds to the width direction of the lifting beam 1. The mounting plate 17 has a plurality of positioning holes 18 along its length direction. Above the two slides 14, there are two upright plates 19. Two downwardly extending mounting rods 20 are welded and fixed on the upright plates 19. The mounting rods 20 pass through the positioning holes 18. The bottom of the mounting rods 20 can be fixed with nuts so that the upright plates 19 are upright on both sides of the lifting beam 1. With the above structure, the position of the upright plates 19 on both sides of the lifting beam 1 can be adjusted, and the distance between the upright plates 19 and the lifting beam 1 can be adjusted, thereby adjusting the maximum swing limit position of the swing arm 7, that is, adjusting the maximum swing angle of the swing arm 7.

[0051] Similarly, in this example, the limiting bracket can be quickly removed from the gap 5 between the two plates 4. Unlike embodiment 1, multiple insertion holes 21 are provided through the edge of the plate 4. The insertion holes 21 are equidistantly arranged along the length of the plate 4. Fastening bolts 16 are provided through the sliding groove 14. The fastening bolts 16 are movably inserted into the insertion holes 21 to limit the positioning of the limiting bracket. This limiting structure is more robust and stable, but it is slightly more complicated than the top-tightening and fixing method of embodiment 1.

[0052] This embodiment is slightly more complex in terms of processing, but it allows for adjustment of the maximum swing angle of the swing arm 7, thus enabling corresponding adjustments and adaptations to different installation environments, thereby improving operational flexibility and quality.

Claims

1. A transformer hoisting device, comprising a lifting beam, wherein upper lifting holes are respectively provided at both ends of the top side of the lifting beam, and lifting slings are hooked onto the upper lifting holes; and lower lifting holes are respectively provided at both ends of the bottom side of the lifting beam, and lifting straps or slings are hooked onto the lower lifting holes, characterized in that, Both ends of the suspension beam are respectively provided with notch extending in the same direction as its length direction. An oscillating arm is hinged in the notch. The inner end of the oscillating arm is located in the notch and the outer end of the oscillating arm extends beyond both ends of the suspension beam. A guide wheel with a vertical axis is rotatably installed at the outer end of the oscillating arm. An elastic member is provided between the oscillating arm and the notch. The elastic member keeps the oscillating arm statically in the same direction as the suspension beam, and when the oscillating arm swings, the elastic member has an elastic force to reset the oscillating arm to the same direction as the suspension beam.

2. The transformer hoisting device according to claim 1, characterized in that, Hinge seats are provided at positions of the notch close to both ends of the suspension beam. A mounting shaft rotatably connected to the hinge seats penetrates through the oscillating arm. The elastic member is a torsion spring. The torsion spring is installed on the mounting shaft and acts between the oscillating arm and the notch.

3. The transformer hoisting device according to claim 1, characterized in that, Flat plates extending horizontally outwards are provided at positions close to both ends on the bottom side of the suspension beam. A sliding groove is slidably fitted on the outer side of the flat plate. The bottom of the sliding groove is connected into an integral structure through a bottom plate. A vertical plate is provided above the sliding groove. The vertical plate is vertically arranged on both sides of the notch.

4. The transformer hoisting device according to claim 3, characterized in that, A fastening bolt threadedly connected to the sliding groove penetrates through the side wall of the sliding groove. The inner end of the fastening bolt abuts against the surface of the flat plate. The bottom side of the vertical plate is fixed on the upper side of the sliding groove. Or; A plurality of jacks penetrate through the edge of the flat plate. The jacks are arranged at equal intervals along the length direction of the flat plate. A fastening bolt penetrates through and is fitted in the sliding groove. The fastening bolt is movably inserted into the jack.

5. The transformer hoisting device according to claim 3, characterized in that, Lower suspension holes are respectively provided at both ends on the outer side of the flat plate.

6. The transformer hoisting device according to claim 3, characterized in that, The sliding groove is C-shaped and is slidably connected to the outer side of the flat plate. A notch located in the center of the suspension beam is formed between the two flat plates. The length of the notch is greater than the length of the sliding groove.

7. The transformer hoisting device according to claim 3, characterized in that, The sliding groove is C-shaped and is slidably connected to the outer side of the flat plate. The bottom side of the sliding groove is connected through a bottom plate. The bottom plate is eccentrically arranged at one end of the sliding groove, so that the two sliding grooves and the bottom plate form a "匚" - shaped structure. Two lower suspension plates are symmetrically provided at positions close to the outer ends of the flat plate. The lower suspension plates are located in the "匚" - shaped structure. A plurality of lower suspension holes are provided on the lower suspension plates.

8. The transformer hoisting device according to claim 2, characterized in that, A circular hole penetrating the suspension beam up and down is provided on the hinge seat. A plurality of shaft holes are provided along the length direction of the oscillating arm. An extension plate is provided at one end of the oscillating arm located in the notch. The mounting shaft is detachably installed relative to the shaft holes and the circular hole. Pin holes are respectively provided at the bottom end and the top end of the mounting shaft. Positioning pins are fitted in the pin holes.

9. The transformer hoisting device according to claim 3, characterized in that, Mounting plates are provided on the top side of the sliding groove. There are two mounting plates on the same side and they are respectively arranged at both ends of the sliding groove. The mounting plates are strip-shaped plates and the length direction corresponds to the width direction of the suspension beam. A plurality of positioning holes are provided along the length direction of the mounting plates. Two mounting rods extending downwards are welded and fixed on the vertical plate. The mounting rods penetrate through the positioning holes.

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