Bearing dismounting tool for cooling fan of dry-type transformer

Abstract

The utility model discloses and provides a dry type transformer cooling fan bearing dismounting tool which comprises a U-shaped angle iron, U-shaped grooves are formed in the upper side and the lower side of the U-shaped angle iron, a fixing block is fixedly installed in the U-shaped groove in the bottom end, a threaded groove is formed in the inner wall of the fixing block, a lead screw is movably installed in the threaded groove, and the lead screw is connected with the U-shaped angle iron. One end of the lead screw is connected with a first hexagonal connecting block, one end of the first hexagonal connecting block is connected with a second hexagonal connecting block, compared with a traditional method, the disassembling tool is exquisite in design, the disassembling steps are simplified, more importantly, in the whole operation process, it can be ensured that the fan bearing is disassembled in a lossless mode, and the working efficiency is improved. Therefore, potential damage to the impeller is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembling a bearing of a heat dissipating fan of a dry-type transformer, in particular to a disassembling tool for a bearing of a heat dissipating fan of a dry-type transformer. Background Art

[0002] With the rapid development of power technology, the capacity of power transformers is increasing, while the size is shrinking. This compact transformer design puts higher requirements on the heat dissipation system. Dry-type transformers, as a common type of power transformer, have particularly prominent heat dissipation problems. Since there is no liquid cooling system, dry-type transformers rely more on efficient heat dissipation systems to keep their operating temperature within the normal range. As an important part of the heat dissipation system, the performance of axial flow fans directly affects the stability and service life of transformers. In order to adapt to the growing demand for heat dissipation, axial flow fans are also evolving. Their volume is gradually decreasing, and their structure is becoming increasingly compact to provide the best heat dissipation effect in a limited space. However, the dust on the transformer under normal operation will accumulate more and more as the running time increases, which poses a hidden danger to the safe operation of the axial flow fan bearings. The impeller of the axial flow fan is an aluminum wheel, and the bearing is close to the impeller, which is not easy to disassemble or forcibly disassemble, causing damage to the impeller. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In view of this, the purpose of the utility model is to provide a dry-type transformer cooling fan bearing disassembly tool to solve the problems raised in the above background.

[0005] (II) Technical solution

[0006] A dry-type transformer cooling fan bearing removal tool comprises a U-shaped angle iron, wherein the upper and lower sides of the U-shaped angle iron are both provided with U-shaped grooves, and a fixing block is fixedly installed in the bottom U-shaped groove, the inner wall of the fixing block is provided with a threaded groove, and a screw rod is movably installed in the threaded groove, one end of the screw rod is connected to a first hexagonal connecting block, and one end of the first hexagonal connecting block is connected to a second hexagonal connecting block.

[0007] Preferably, an operating groove is provided at the bottom end of the second hexagonal connecting block, through which the user can more accurately position and fix the tool, thereby reducing possible instability and shaking during operation, which not only improves the accuracy of the operation, but also reduces fatigue that may be caused by long-term operation.

[0008] Preferably, a plurality of operating rods are fixedly mounted on the outer surface of the first hexagonal connecting block. By fixing the plurality of operating rods on the outer surface, the first hexagonal connecting block becomes easier to operate. The operating rods provide additional gripping points, allowing the user to more conveniently rotate the first hexagonal connecting block, thereby controlling the pressing action of the screw rod.

[0009] Preferably, the outer surface of multiple groups of operating rods is wrapped with rubber, and one end of multiple groups of operating rods is arc-shaped. By wrapping the outer surface with rubber, the touch of the operating rod is improved, becoming softer and more comfortable, which helps to reduce hand fatigue during long-term operation and improve the user experience. The arc-shaped design at one end of the operating rod reduces the sharp feeling during operation, reduces the risk of accidental scratches on the hands, and increases safety and comfort.

[0010] Preferably, one end of the screw rod is conical. The conical design makes it easier to insert and position one end of the screw rod into the thread groove of the fixed block. The inclined surface of the cone can guide the screw rod to enter the thread groove smoothly, reducing the resistance during insertion and improving the convenience of operation.

[0011] Preferably, the specification of the U-shaped angle iron is 50*50mm, which not only meets industrial standards and improves the compatibility and stability of the tool, but also enhances its load-bearing capacity and convenience of processing and installation, providing users with a more reliable and efficient disassembly tool.

[0012] Preferably, a plurality of groups of grooves are provided on the outer surface of one end of the screw rod, and springs are installed in the plurality of groups of grooves, and a movable pin is connected to one end of the spring. The design of the spring provides a stable and reliable fixing force, ensuring that the movable pin can remain stable after being adjusted to a suitable position and will not loosen or shift, thereby helping to ensure that the disassembly tool maintains stable performance during use and reduce operational errors or damage caused by loosening or shifting.

[0013] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0014] 1. Compared with the traditional method, the disassembly tool of this utility model is exquisitely designed, which not only simplifies the disassembly steps, but more importantly, it can ensure the non-destructive disassembly of the fan bearing during the entire operation, thereby avoiding potential damage to the impeller. This non-destructive disassembly feature is particularly important in the daily maintenance and care of dry-type transformers, because it not only extends the service life of the equipment, but also reduces the risk of equipment damage caused by improper operation.

[0015] 2. The utility model greatly improves the maintenance efficiency of the dry-type transformer cooling system. Since the disassembly process is faster and simpler, it directly shortens the transformer downtime, provides higher stability for the power system, and has a simple manufacturing structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the second three-dimensional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the third three-dimensional structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the fourth three-dimensional structure of the utility model;

[0020] Figure 5 For this utility model Figure 4 Enlarged schematic diagram at point A in the middle.

[0021] In the figure: 1. U-shaped angle iron; 2. fixing block; 3. screw rod; 4. first hexagonal connecting block; 5. second hexagonal connecting block; 6. operating rod; 7. U-shaped groove; 8. operating groove; 9. movable pin. DETAILED DESCRIPTION

[0022] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0023] See also Figure 1-5 , an embodiment provided by the utility model:

[0024] A dry-type transformer cooling fan bearing disassembly tool comprises a U-shaped angle iron 1, wherein the upper and lower sides of the U-shaped angle iron 1 are both provided with U-shaped grooves 7, and a fixing block 2 is fixedly installed in the bottom U-shaped groove 7, and the inner wall of the fixing block 2 is provided with a threaded groove, and a screw rod 3 is movably installed in the threaded groove, one end of the screw rod 3 is connected to a first hexagonal connecting block 4, and one end of the first hexagonal connecting block 4 is connected to a second hexagonal connecting block 5.

[0025] Furthermore, an operating groove 8 is provided at the bottom end of the second hexagonal connecting block 5, through which the user can more accurately position and fix the tool, thereby reducing possible instability and shaking during operation, which not only improves the accuracy of the operation, but also reduces fatigue that may be caused by long-term operation.

[0026] Furthermore, multiple sets of operating rods 6 are fixedly installed on the outer surface of the first hexagonal connecting block 4. By fixing multiple sets of operating rods 6 on the outer surface, the first hexagonal connecting block 4 becomes easier to operate. The operating rods 6 provide additional gripping points, allowing the user to more conveniently rotate the first hexagonal connecting block 4, thereby controlling the pressing action of the screw rod 3.

[0027] Furthermore, the outer surface of the multiple sets of operating rods 6 is wrapped with rubber, and one end of the multiple sets of operating rods 6 is arc-shaped. By wrapping the rubber on the outer surface, the touch of the operating rod 6 is improved, becoming softer and more comfortable, which helps to reduce hand fatigue during long-term operation and improve the user experience. The arc-shaped design at one end of the operating rod 6 reduces the sharp feeling during operation, reduces the risk of accidental scratches on the hands, and increases safety and comfort.

[0028] Furthermore, one end of the screw rod 3 is cone-shaped. The conical design makes it easier to insert and position one end of the screw rod 3 into the thread groove of the fixed block 2. The inclined surface of the cone can guide the screw rod to enter the thread groove smoothly, reducing the resistance during insertion and improving the convenience of operation.

[0029] Furthermore, the specifications of the U-shaped angle iron 1 are 50*50mm, which not only meets industrial standards and improves the compatibility and stability of the tool, but also enhances its load-bearing capacity and convenience of processing and installation, providing users with a more reliable and efficient disassembly tool.

[0030] Furthermore, a plurality of grooves are provided on the outer surface of one end of the screw rod 3, and springs are installed in the plurality of grooves, and a movable pin 9 is connected to one end of the spring. The design of the spring provides a stable and reliable fixing force, ensuring that the movable pin 9 can remain stable after being adjusted to a suitable position, and will not loosen or shift, thereby helping to ensure that the disassembly tool maintains stable performance during use and reduce operational errors or damage caused by loosening or shifting.

[0031] Working principle: Place the disassembly tool on the axial fan bearing to be disassembled, and ensure that the U-shaped groove 7 of the U-shaped angle iron 1 matches the periphery of the bearing. At this time, the fixing block 2 fits tightly with the bottom of the bearing, ensuring the stability and accuracy of the disassembly tool. Then, by rotating the first hexagonal connection block 4, the screw rod 3 is driven to rotate in the thread groove of the fixing block 2. Due to the matching design of the screw rod 3 and the thread groove, the rotation of the screw rod 3 will be converted into linear motion, so that the other end of the screw rod 3 gradually approaches the bearing. When the other end of the screw rod 3 is in close contact with the top of the bearing, continue to rotate the first hexagonal connection block 4, and the screw rod 3 will use its top pressure on the bearing to gradually push the bearing out of the shaft. At this time, since the gap between the bearing and the shaft gradually increases, the disassembly of the bearing becomes easy and simple. In addition, for the convenience of operation, the first hexagonal connection block 4 is connected to the second hexagonal connection block 5, and the user can easily rotate the second hexagonal connection block 5 through tools such as wrenches, thereby driving the rotation of the first hexagonal connection block 4 and the screw rod 3. This design not only improves work efficiency, but also reduces the difficulty of operation.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A dry-type transformer cooling fan bearing removal tool, characterized in that: The invention comprises a U-shaped angle iron (1), wherein the upper and lower sides of the U-shaped angle iron (1) are both provided with U-shaped grooves (7), and a fixing block (2) is fixedly installed in the bottom U-shaped groove (7), the inner wall of the fixing block (2) is provided with a threaded groove, and a screw rod (3) is movably installed in the threaded groove, one end of the screw rod (3) is connected to a first hexagonal connecting block (4), and one end of the first hexagonal connecting block (4) is connected to a second hexagonal connecting block (5).

2. A dry-type transformer cooling fan bearing removal tool according to claim 1, characterized in that: An operating groove (8) is provided at the bottom end of the second hexagonal connecting block (5).

3. A dry-type transformer cooling fan bearing removal tool according to claim 1, characterized in that: A plurality of groups of operating rods (6) are fixedly mounted on the outer surface of the first hexagonal connecting block (4).

4. A dry-type transformer cooling fan bearing removal tool according to claim 3, characterized in that: The outer surfaces of the multiple groups of operating rods (6) are wrapped with rubber, and one end of the multiple groups of operating rods (6) is in an arc shape.

5. A dry-type transformer cooling fan bearing removal tool according to claim 1, characterized in that: One end of the screw rod (3) is in a cone shape.

6. A dry-type transformer cooling fan bearing removal tool according to claim 1, characterized in that: The specification of the U-shaped angle iron (1) is 50*50 mm.

7. A dry-type transformer cooling fan bearing removal tool according to claim 1, characterized in that: The outer surface of one end of the screw rod (3) is provided with a plurality of grooves, and springs are installed in the plurality of grooves, and one end of the spring is connected to a movable pin (9).

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