Main transformer cooler replacement tool suitable for special terrains

Abstract

The utility model discloses a main transformer cooler replacement tool suitable for special terrains, the tool comprises a cooler hoisting support and a cooler special sling, the cooler hoisting support comprises a supporting device and supporting legs fixed at the two ends of the supporting device, the supporting leg at one end is arranged on a sliding plate, the sliding plate is located on a rail, and the cooler special sling is arranged on the sliding plate. Two pulley blocks are arranged on the supporting device, a chain block is arranged on each pulley block, and a cooler lifting lug of the special lifting appliance for the cooler is hooked by a hook arranged below the chain block. When the condition that only one side is a cobblestone ground is met, the main transformer cooler can be hoisted by using the replacement tool, and the replacement tool has the characteristics of convenience in field installation, small occupied area and easiness in disassembly and assembly, and can be suitable for hoisting work in various narrow areas through torque verification.

Description

Technical Field

[0001] The present application relates to the field of cooler processing technology, and in particular to a tool for replacing a main transformer cooler suitable for special terrains. Background Art

[0002] The main transformer is the main step-down transformer used for power transmission and transformation within a unit or substation, and is the core component of the substation. The transformer is the core equipment of the electric locomotive traction power supply system and is crucial for ensuring its safe and stable operation. Main transformers generally have large capacity and require high reliability. Although the failure rate of main transformers is low, a failure can cause significant losses. At the very least, it can cause equipment failure; at worst, it can cause a fire, endangering normal transportation safety.

[0003] The cooler inside the main transformer equipment is large in size and requires a lot of manpower during the disassembly and assembly process. The cooler is installed in a confined space, and during the disassembly and assembly process, it is impossible to use the lifting and transportation equipment in the factory. During the transportation process, the cooler must be transported over a distance of 5 meters before a crane can be used. Within this 5-meter distance, all lifting to the outside must be done manually and with a hoist.

[0004] After the main transformer room equipment was installed, conventional lifting brackets were unable to access the equipment area due to the complex interior environment. The lifting area was blocked by some equipment and had a cobblestone floor near the main transformer. Currently, replacing the main transformer cooler requires breaking open the wall of the main transformer room to a sufficient width and using an aerial work platform to lift the equipment through the top lifting point of the main transformer room. This can easily collide with adjacent equipment, causing damage and making the operation difficult. Utility Model Content

[0005] The purpose of this application is to overcome the existing technical defects and provide a main transformer cooler replacement tool suitable for special terrain. When encountering a situation where only one side of the ground is cobblestone, the main transformer cooler can be lifted using the replacement tool. It has the characteristics of convenient on-site installation, small footprint and easy disassembly and assembly.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] In the first aspect, the present application proposes a main transformer cooler replacement tool suitable for special terrain, the tool including a cooler lifting bracket and a cooler-specific lifting device, the cooler lifting bracket including a supporting device and legs fixed at both ends of the supporting device, one end of the leg is placed on a slide, the slide is located on the track, two pulley groups are provided on the supporting device, each pulley group is provided with a hand winch, and the hook provided under the hand winch hooks the cooler lifting ear of the cooler-specific lifting device.

[0008] In a possible embodiment, the cooler-specific lifting device includes a rotating shaft, a plurality of clamping members arranged on the rotating shaft, the cooler lifting lug is arranged on the rotating shaft, and the bottom of the clamping member is provided with a bolt opening for matching with the bolt.

[0009] In a possible embodiment, the device further includes a cooler fixing frame for placing the cooler, and the cooler fixing frame includes a plurality of concave fixing members.

[0010] In a possible embodiment, the device further includes a transfer device, which includes a transfer frame and a plurality of transfer rollers arranged on the transfer frame.

[0011] In a possible embodiment, the cooler hanging bracket is made of aviation aluminum.

[0012] In a possible embodiment, the height adjustment range of the cooler hanging bracket is 3.5 meters to 6 meters.

[0013] In a possible embodiment, a second pulley block is further provided on the supporting device, a connecting chain is provided under the second pulley block, the connecting chain connects the two ends of the beam through a coupling member, and a hook is provided under each coupling member.

[0014] In a possible embodiment, a plurality of rollers are provided at the bottom of the transfer device.

[0015] The above-mentioned main scheme of this application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and protected by this application; and in this application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of this application, those skilled in the art will understand that there are many combinations based on existing technology and common knowledge, all of which are technical solutions to be protected by this application, and they are not exhaustive here.

[0016] This application discloses a tool for replacing a main transformer cooler suitable for use in special terrain. The tool comprises a cooler hoisting bracket and a dedicated cooler hoist. The cooler hoisting bracket includes a support device and legs fixed to both ends of the support device. One leg is placed on a slide, which is located on a track. The support device is equipped with two pulley blocks, each of which is equipped with a hand chain hoist. A hook provided under the hand chain hoist engages the cooler lifting lug of the dedicated cooler hoist. This utility model features convenient on-site installation, a small footprint, and easy assembly and disassembly. After torque verification, it can be applied to various lifting operations in confined areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a cooler hanging bracket proposed in an embodiment of the present application is shown.

[0018] Figure 2 A schematic structural diagram of a special hanger for a cooler proposed in an embodiment of the present application is shown.

[0019] Figure 3 A schematic diagram of a cooler fixing bracket proposed in an embodiment of the present application is shown.

[0020] Figure 4 A schematic diagram of a transfer device proposed in an embodiment of the present application is shown.

[0021] Figure 5 A structural schematic diagram of another cooler hanging bracket proposed in an embodiment of the present application is shown.

[0022] Icons: 1-support device; 2-support leg; 3-slide plate; 4-track; 5-pulley block; 6-hand hoist; 7-cooler fixing frame; 8-second pulley block; 9-connecting chain; 10-coupling piece; 11-crossbeam; 21-rotating shaft; 22-clamping piece; 23-cooler lifting ear; 31-transfer frame; 32-transfer roller. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0024] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0025] Conventional lifting brackets cannot access the equipment area due to the complex interior environment of the main transformer room, the obstruction of some equipment within the lifting area, and the cobblestone floor near the main transformer. Currently, replacing the main transformer cooler requires breaking open the main transformer room wall to a sufficient width and using an aerial work platform to pass the lifting strap through the main transformer room's top lifting point for lifting. This can easily collide with adjacent equipment, causing damage and making the operation difficult.

[0026] Therefore, in order to solve the above problems, the embodiment of the present application proposes a main transformer cooler replacement tool suitable for special terrain. When encountering a situation where only one side is a cobblestone ground, the main transformer cooler can be lifted using the replacement tool. It has the characteristics of convenient on-site installation, small footprint and easy disassembly and assembly. After torque verification, it can be suitable for lifting work in various narrow areas.

[0027] The present application proposes a tool for replacing a main transformer cooler suitable for special terrains, which tool includes a cooler lifting bracket and a special cooler lifting device. The cooler lifting bracket includes a supporting device 1 and support legs 2 fixed at both ends of the supporting device 1, wherein the support legs 2 at one end are placed on a slide 3, and the slide 3 is located on a track 4. Two pulley sets 5 are provided on the supporting device 1, and a hand winch 6 is provided on each pulley set 5. The hook provided under the hand winch 6 hooks the cooler lifting ear 23 of the special cooler lifting device.

[0028] Please refer to Figure 1 , Figure 1 A structural schematic diagram of the cooler lifting bracket proposed in an embodiment of the present application is shown. The lifting bracket is designed on one side of the cobblestone to support the main transformer track and the track support of the cooler base on the cobblestone, and a movable support is designed on the track support.

[0029] In a possible implementation, the cooler hanging bracket is made of aviation aluminum.

[0030] In a possible implementation manner, the height adjustment range of the cooler hanging bracket is 3.5 meters to 6 meters.

[0031] The cooler lifting bracket is made of high-strength aviation aluminum. The weight of the lifting bracket components does not exceed 70kG, of which the lifting beam that needs to be assembled at high altitude does not exceed 60kG. The lifting height of the cooler lifting bracket is between 3.5 meters and 6 meters, with an adjustment range of 50cm. The cooler lifting bracket as a whole can withstand 3T lifting weight without deformation or displacement.

[0032] Two pulley blocks 5 are provided on the supporting device 1 of the cooler lifting bracket. The pulley blocks 5 can slide along the direction of the supporting device 1. A hand hoist 6 is provided on each pulley block 5 for lifting the cooler.

[0033] The hook set under the hand chain hoist 6 hooks the cooler lifting lug 23 of the cooler special lifting device, please refer to Figure 2 , Figure 2 A structural schematic diagram of a special hanger for a cooler proposed in an embodiment of the present application is shown. The special hanger for a cooler includes a rotating shaft 21, a plurality of clamping members 22 arranged on the rotating shaft 21, a cooler lifting ear 23 arranged on the rotating shaft 21, and a bolt opening for matching with a bolt is provided at the bottom of the clamping member 22.

[0034] Since each main transformer cooler is 4.2 meters long, the main transformer cooler uses two hand hoists 6 to fix the cooler. The cooler is first placed in the clamping piece 22 of the cooler-specific lifting fixture, and then the bolts and nuts at the bottom of the clamping piece 22 are tightened. At this point, the main transformer cooler is fixed.

[0035] In a possible embodiment, the device further includes a cooler fixing frame 7 for placing the cooler, and the cooler fixing frame 7 includes a plurality of concave fixing members.

[0036] Please refer to Figure 3 , Figure 3 A schematic diagram of a cooler mounting bracket proposed in an embodiment of the present application is shown. The cooler mounting bracket 7 includes multiple concave fixing members. After the main transformer cooler is lifted using a cooler hoisting bracket and a dedicated cooler lifting device, the cooler mounting bracket 7 is inserted to support the main transformer cooler. The main transformer cooler is placed in the concave portion of the concave fixing members. The cooler mounting bracket 7 is then placed on a transfer device, enabling stable transfer of the entire main transformer cooler.

[0037] In a possible embodiment, the device further includes a transfer device, which includes a transfer frame 31 and a plurality of transfer rollers 32 arranged on the transfer frame 31.

[0038] In a possible embodiment, a plurality of rollers are provided at the bottom of the transfer device.

[0039] Figure 4 A schematic diagram of the transfer device proposed in an embodiment of the present application is shown. The transfer device, in cooperation with the fixing device, can horizontally transfer the main transformer cooler from inside the main transformer room to outside the main transformer room. The fixing tooling is fixed at appropriate positions on both sides of the cooler. Driven by the rollers of the transfer device, the main transformer cooler is transferred from inside the main transformer room to outside the main transformer room.

[0040] A second pulley block 8 is further provided on the supporting device 1 , and a connecting chain 9 is provided under the second pulley block 8 . The connecting chain 9 is connected to both ends of the crossbeam 11 through a coupling member 10 , and a hook is provided under each coupling member 10 .

[0041] Please refer to Figure 5 , Figure 5 A structural schematic diagram of another cooler lifting bracket proposed in an embodiment of the present application is shown. In order to adjust the main transformer cooler from a vertical direction to a horizontal direction, a second pulley set 8 is also provided on the support device 1, which can switch the main transformer cooler between a horizontal and a vertical state with only a slight external force after lifting.

[0042] The steps for replacing the main transformer cooler with the tooling proposed in this application are as follows:

[0043] The first step is to manually arrange the cooler lifting bracket at the position where the cooler is to be lifted, lay the track on the cobblestone ground on the main transformer side, assemble and fix other areas, and install the lifting pulley on the bracket lifting beam.

[0044] The second step is to install the special lifting device for the cooler on the pulley block of the cooler lifting bracket, install the lifting device on the lifting ear of the cooler body, close the water and oil inlet and outlet valves of the cooler, and drain the water and oil of the cooler body. After the flange is removed, the cooler body can be lifted vertically.

[0045] The third step is to lift the cooler to a horizontal surface without any obstructions at the lower end of the cooler, and then use the special transfer device provided on the beam 11 to move it along the direction of the lifting beam.

[0046] The fourth step is to install the special lifting device for the cooler. Use two hand hoists 6 to cooperate to adjust the cooler from the vertical direction to the horizontal direction.

[0047] Step 5: With the cooperation of the cooler fixing frame and the transfer device, the main transformer cooler is horizontally transferred from the main transformer room to the outside.

[0048] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0049] First, it is easy to install on site, occupies a small area and is easy to disassemble and assemble.

[0050] Second, it is safe and reliable, and has been torque-calibrated, making it suitable for lifting work in a variety of narrow areas.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A tool for replacing a main transformer cooler suitable for special terrains, characterized in that: The tooling comprises a cooler lifting bracket and a cooler-specific lifting device, wherein the cooler lifting bracket comprises a supporting device (1) and legs (2) fixed at both ends of the supporting device, wherein the legs at one end are placed on a slide plate (3), and the slide plate is located on a track (4), and two pulley blocks (5) are arranged on the supporting device, and each pulley block is provided with a hand chain hoist (6), and a hook arranged under the hand chain hoist hooks the cooler lifting ear of the cooler-specific lifting device.

2. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The cooler special hanger comprises a rotating shaft (21), a plurality of clamping members (22) arranged on the rotating shaft, a cooler lifting lug (23) arranged on the rotating shaft, and a bolt opening for matching with a bolt is arranged at the bottom of the clamping member.

3. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The tooling also includes a cooler fixing frame (7) for placing the cooler, and the cooler fixing frame includes a plurality of concave fixing members.

4. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The tooling also includes a transfer device, which includes a transfer frame (31) and a plurality of transfer rollers (32) arranged on the transfer frame.

5. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The cooler hanging bracket is made of aviation aluminum.

6. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The height adjustment range of the cooler hanging bracket is 3.5 meters to 6 meters.

7. The main transformer cooler replacement tool as claimed in claim 1, characterized in that: The support device (1) is also provided with a second pulley block (8), a connecting chain (9) is provided under the second pulley block (8), the connecting chain (9) is connected to the two ends of the crossbeam (11) through a coupling member (10), and a hook is provided under each coupling member (10).

8. The main transformer cooler replacement tool as claimed in claim 4, characterized in that: A plurality of rollers are arranged at the bottom of the transfer device.

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