Dry-type transformer double-crane hoisting device

Abstract

The utility model discloses a dry-type transformer double-crane hoisting device which comprises a hoisting frame with a rectangular frame body on four sides, a plurality of reinforcing beams arranged at intervals are fixedly welded in the frame body, and a cross-shaped reinforcing piece is fixedly welded between the two reinforcing beams located in the middle. A rotatable lifting ring is arranged below the cross-shaped center position of the reinforcing part, a lower lifting rope is hung at the rotatable lifting ring, four lifting rope tail ends are formed on the lower lifting rope, and lower shackles are arranged at the tail ends of the lifting rope and used for being connected with clamp lifting points of the dry-type transformer in a locking mode. The lower lifting rope and the lifting frame are in single-point connection and movable connection, so that even if two cranes are not synchronous in lifting, two ends of the dry-type transformer can be stressed uniformly, and no-load loss is prevented from being affected by deformation of an iron core. Moreover, after the dry-type transformer is lifted, the dry-type transformer can rotate on the horizontal plane, so that the dry-type transformer can be conveniently placed in different places, loaded and delivered.

Description

Technical Field

[0001] This utility model relates to hoisting devices, and more particularly to a dry-type transformer double crane hoisting device. Background Technology

[0002] The existing dry-type transformer dual-crane lifting device uses a specialized lifting tool with a rectangular frame. Four lifting ropes are installed at the four corners of the frame. Two ropes along the shorter side of one side of the rectangular frame are attached to the hook of one crane, and two ropes along the shorter side of the other side are attached to the hook of the other crane. Four additional ropes are installed below the frame, each corresponding to a clamping point on the dry-type transformer. Shackles are attached to the ends of the ropes, and bolts are used to lock the shackles to the clamping points. The ropes are perpendicular to the horizontal plane. The two cranes lift the dry-type transformer simultaneously. If the lifting is not synchronized, one side will be stressed first, resulting in uneven force on the transformer core clamps. This can easily cause the rectangular core to deform into a parallelogram, increasing the core joint width and affecting the no-load loss of the dry-type transformer. Meanwhile, the traditional dry-type transformer dual-crane hoisting device has its lifting ropes hung on two cranes respectively, which loses the rotation function of a single crane hook and also has the disadvantage of difficulty in rotating after hoisting, which brings many inconveniences to loading and delivery. Utility Model Content

[0003] To address the shortcomings of the aforementioned technologies, this utility model provides a dry-type transformer double-crane hoisting device.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is: a dry-type transformer double crane hoisting device, including a hoisting frame, the four sides of the hoisting frame are rectangular, and multiple spaced reinforcing beams are welded and fixed inside the rectangular four sides. A cross-shaped reinforcing member is welded and fixed between two reinforcing beams located in the middle position.

[0005] A rotatable lifting ring is provided below the cross center position of the reinforcing member. A lower lifting rope is hung on the rotatable lifting ring. The lower lifting rope has four lifting rope ends. A lower shackle is provided at the end of the lifting rope. The lower shackle is used to lock and connect with the clamp lifting point of the dry-type transformer.

[0006] Preferably, the hoisting frame is connected to the double crane via a hoisting rope.

[0007] Preferably, the double crane is equipped with crane hooks, and connecting plates are fixed above the four corners of the four sides of the lifting frame.

[0008] The hoisting rope is connected between the crane hook and the connecting plate.

[0009] Preferably, each connecting plate has multiple holes arranged side by side.

[0010] Preferably, the lifting rope is locked to the connecting plate at the end of the rope by an upper shackle.

[0011] Preferably, a screw hole seat is provided at the center of the cross of the reinforcing member, and the rotatable lifting ring is installed at the screw hole seat through the screw head.

[0012] Preferably, a rotating lug is screwed onto the lower part of the base of the screw head of the rotatable lifting ring, and the rotating lug is fitted with a ring body;

[0013] The lower rope is attached to the ring of the rotatable lifting ring.

[0014] Preferably, both the upper shackle and the lower shackle 5 include a U-shaped main frame, and the ends of the U-shaped main frame are provided with aligned bolt locking holes.

[0015] This utility model discloses a dual-crane lifting device for dry-type transformers. A rotatable lifting ring is installed at the center point of the lifting frame, and a lower lifting rope is attached to the rotatable lifting ring and connected to the transformer clamps via a lower shackle. Because the lower lifting rope is connected to the lifting frame at a single point and is a movable connection, even if the two cranes lift asynchronously, the force applied to both ends of the dry-type transformer can be automatically adjusted by the rotatable lifting ring, thus ensuring uniform force distribution at both ends of the transformer and preventing core deformation that could affect no-load losses. Furthermore, because the rotatable lifting ring is located at the center of the lower part of the lifting frame, the dry-type transformer can rotate 360° in the horizontal plane after lifting, facilitating placement in different locations and loading for shipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the hoisting frame.

[0018] Figure 3 for Figure 2 A bottom view.

[0019] Figure 4 for Figure 1 A schematic diagram of the rotatable lifting ring.

[0020] Figure 5 for Figure 1 A structural diagram of the upper or lower shackle.

[0021] Figure 6 This is a schematic diagram of the usage state of this utility model.

[0022] In the diagram: 1. Lifting frame; 101. Reinforcing beam; 102. Reinforcing member; 103. Screw hole seat; 104. Connecting plate; 2. Upper lifting rope; 3. Rotatable lifting ring; 31. Screw head; 32. Rotating lug; 33. Ring body; 4. Lower lifting rope; 5. Lower shackle; 51. U-shaped main frame; 52. Bolt locking hole; 6. Double crane; 7. Crane hook; 8. Hook head; 9. Upper shackle; 10. Dry-type transformer; 11. Transformer clamp; 12. Clamp lifting point. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] This utility model discloses a dry-type transformer double trolley hoisting device, which is based on double trolleys 6 to hoist the dry-type transformer 10. The double trolleys 6 include two trolleys, each of which is equipped with a trolley hook 7. The trolley hook 7 is hoisted to the hoisting frame 1 by an upper hoisting rope 2.

[0025] like Figure 2 and Figure 3 As shown, the four sides of the hoisting frame 1 retain the traditional rectangular design. The two upper hoisting ropes 2 on one of the shorter sides are hung on the crane hook 7 of one of the cranes, and the two upper hoisting ropes 2 on the other shorter side are hung on the crane hook 7 of another crane.

[0026] To make the center distance of the lifting rope 2 adjustable, this invention optimizes the connection structure between the lifting frame 1 and the lifting rope 2, such as... Figure 2 As shown, connecting plates 104 are welded and fixed above the four corners of the four sides of the hoisting frame 1; each connecting plate 104 has multiple holes arranged side by side, preferably three holes, so that the connection holes between the hoisting rope 2 and the connecting plate 104 can be selected according to the requirements.

[0027] For the upper hoisting rope 2, the end of the rope can be locked to the hole in the connecting plate 104 via the upper shackle 9. First, the upper shackle 9 is installed at the end of the upper hoisting rope 2 using the hook 8 structure; secondly, as... Figure 5 As shown, the upper shackle 9 includes a U-shaped main frame 51, and the ends of the U-shaped main frame 51 are provided with aligned bolt locking holes 52. Thus, by locking the fixing bolts into the aligned bolt locking holes 52 and the corresponding holes in the connecting plate 104, the connection between the upper hoisting rope 2 and the hoisting frame 1 can be realized.

[0028] Furthermore, considering that existing dual-crane hoisting devices may cause uneven force distribution on one side if the two cranes are not hoisted synchronously, this new invention installs a rotatable lifting ring 3 below the center point of the hoisting frame 1.

[0029] The hoisting frame 1 is designed with a circular tube welded structure. The middle load-bearing part is reinforced with a cross. Specifically, multiple reinforcing beams 101 are welded and fixed inside the rectangular four-sided frame of the hoisting frame 1. Furthermore, a cross-shaped reinforcing member 102 is welded and fixed between two reinforcing beams 101 located in the middle position. The cross-shaped reinforcing member 102 is also welded and connected to the four-sided frame.

[0030] Therefore, a rotatable lifting ring 3 is provided below the center of the cross-shaped reinforcing member 102, with the cross-shaped reinforcing member 102 as the support point.

[0031] The structure of the rotatable lifting ring 3 is as follows: Figure 4 As shown, it is connected to the reinforcing member 102 by threads; specifically, a screw hole seat 103 is provided at the cross center position of the reinforcing member 102, and the rotatable lifting ring 3 is installed at the screw hole seat 103 by the screw head 31.

[0032] For example Figure 4 As shown, a rotating lug 32 is screwed onto the lower part of the base of the screw head 31 of the rotatable lifting ring 3, and a ring body 33 is fitted onto the rotating lug 32; thus, the lower lifting rope 4 is hung on the ring body 33 of the rotatable lifting ring 3.

[0033] For the lower suspension rope 4, the traveling vehicle has four suspension rope ends, and a hook head 8 structure is set at the end of the suspension rope, and a lower shackle 5 is set through the hook head.

[0034] The structure of the lower shackle 5 is also as follows Figure 5 As shown, the lower shackle includes a U-shaped main frame 51, and the ends of the U-shaped main frame 51 are provided with aligned bolt locking holes 52.

[0035] The lower shackle 5 is used for locking connection with the clamp lifting point 12 of the dry-type transformer 10.

[0036] like Figure 6 As shown, the dry-type transformer 10 is equipped with a transformer clamp 11, which has clamp lifting points 12. The clamp lifting points 12 are of an ear-type structure, secured by a lower shackle 5. Bolts are then inserted into the locking holes of the clamp lifting points 12 and the aligned bolt locking holes 52 to fix the lower shackle 5 and the clamp lifting points 12 of the dry-type transformer 10. Ultimately, this dual-crane hoisting device enables the hoisting and transportation of the dry-type transformer 10.

[0037] In summary, for the dry-type transformer double trolley hoisting device disclosed in this utility model, the upper hoisting ropes 2 at both ends of the hoisting frame 1 are respectively connected to the trolley hooks 7 of the two trolleys. The two trolleys lift at the same time, driving the hoisting frame 1 to move upward, thereby causing the rotatable lifting ring 3 fixed on the hoisting frame 1 to move upward. The rotatable lifting ring 3 is connected to the lower hoisting rope, and the lower hoisting rope locks the clamping point 12 of the dry-type transformer through the lower shackle and bolts, thereby achieving the purpose of lifting the product.

[0038] Compared with existing technologies, this invention has the following technical advantages:

[0039] 1) Single-point connection, uniform force on both ends of the lifting rope: The rotatable lifting ring of this transformer double crane lifting device is a single-point connection. When the cranes are not lifting at the same time, the weight of the transformer applied to the rotatable lifting ring is still perpendicular to the horizontal plane. The lifting rope at the bottom of the frame is uniformly stressed, which avoids the displacement of the transformer core laminations and causes excessive no-load loss.

[0040] 2) Rotatable lifting rings to meet placement and loading needs: When the transformer is actually lifted, it needs to be rotated for placement on site and loading. The design of the rotatable lifting rings can meet the above scenarios. After the transformer is lifted, it can be easily rotated by manpower.

[0041] 3) The center of the hoisting frame is designed with a cross reinforcement to meet the rigidity requirements: The transformer double crane hoisting device adopts a round tube welded structure, and the middle load-bearing part is reinforced with a cross. This overcomes the problem of poor rigidity caused by the distance between the hoisting point on the frame and the rotatable lifting ring, and effectively avoids the risk of steel beam bending during the hoisting process.

[0042] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A dry-type transformer double-crane hoisting device, comprising a hoisting frame (1), characterized in that: The four sides of the hoisting frame (1) are rectangular, and multiple reinforcing beams (101) are welded and fixed inside the rectangular four sides. A cross-shaped reinforcing member (102) is welded and fixed between the two reinforcing beams (101) located in the middle position. A rotatable lifting ring (3) is provided below the cross center position of the reinforcing member (102). A lower lifting rope (4) is hung at the rotatable lifting ring (3). The lower lifting rope (4) has four lifting rope ends. A lower shackle (5) is provided at the lifting rope end position. The lower shackle (5) is used to lock and connect with the clamp lifting point (12) of the dry transformer (10).

2. The dry-type transformer double-crane hoisting device according to claim 1, characterized in that: The hoisting frame (1) is connected to the double crane (6) by the hoisting rope (2).

3. The dry-type transformer double-crane hoisting device according to claim 2, characterized in that: The double crane (6) is equipped with crane hooks (7), and the four corners of the four sides of the hoisting frame (1) are fixed with connecting plates (104). The hoisting rope (2) is connected between the crane hook (7) and the connecting plate (104).

4. The dry-type transformer double-crane hoisting device according to claim 3, characterized in that: Each of the connecting plates (104) has multiple holes arranged side by side.

5. The dry-type transformer double-crane hoisting device according to claim 4, characterized in that: The upper rope (2) is locked to the hole on the connecting plate (104) at the end of the rope by the upper shackle (9).

6. The dry-type transformer double-crane hoisting device according to claim 1, characterized in that: A screw hole seat (103) is provided at the cross center position of the reinforcing member (102), and the rotatable lifting ring (3) is installed at the screw hole seat (103) through the screw head (31).

7. The dry-type transformer double-crane hoisting device according to claim 6, characterized in that: The rotatable lifting ring (3) has a rotating lug (32) screwed below the seat of the screw head (31) and the rotating lug (32) is fitted with a ring body (33). The lower rope (4) is hung on the ring (33) of the rotatable ring (3).

8. The dry-type transformer double-crane hoisting device according to claim 5, characterized in that: Both the upper shackle (9) and the lower shackle (5) include a U-shaped main frame (51), and the ends of the U-shaped main frame (51) are provided with aligned bolt locking holes (52).

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