Pressing device for winding transformer coil

Abstract

The utility model belongs to the technical field of transformer coil pressing devices, and particularly relates to a pressing device for winding a transformer coil, which comprises a winding main body, the winding main body comprises a winding shaft, a winding die is arranged on the winding shaft, a movable support capable of moving is arranged on one side of the winding die, and the movable support is arranged on the other side of the winding die. A rocker arm is rotationally connected to the movable support through a shaft pin, a pressing mechanism is arranged at the top end of the rocker arm, the pressing mechanism can move on the surface of the winding mold and is in press fit connection with the surface of the winding mold, and the interlayer insulation gasket is pressed by a rotary pressing roller to be wound, so that the interlayer insulation gasket is tightly wound.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer coil compression device technical field, specifically relates to a kind of compression device for transformer coil winding. BACKGROUND

[0002] In large transformer such as dry-type transformer, coil is the heart of transformer, when fault occurs on line or atmospheric overvoltage occurs due to lightning attack and operating impulse wave is generated due to the action of circuit breaker on line when transformer is running, coil will bear transient overvoltage higher than rated working voltage.

[0003] Coil is the core of transformer circuit part, and interlayer insulation pad is arranged between coils, to ensure the reliability of long-term operation of transformer, in addition to design, process guarantee is particularly important to ensure that transformer can withstand the action of sudden short-circuit electric power.The tension of wire during winding meets the process regulation, and the tightness of interlayer insulation pad (commonly known as layer insulation) winding is also ensured, so that the control of coil size and mechanical strength is realized.Therefore, it has important practical and economic value to design a compression of high-voltage winding machine which is easy to operate and safe. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a compression device for transformer coil winding, after placing and fixing high-voltage interlayer insulation pad, rotating compression roller is used to press interlayer insulation pad and winding, so that interlayer insulation pad is tightly wound, and the problems in the above background are solved.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a compression device for transformer coil winding, including winding main body, winding main body includes winding shaft, winding mold is arranged on winding shaft, movable movable support is arranged on one side of winding mold, rocker arm is rotatably connected on movable support through shaft pin, compression mechanism is arranged at the top of rocker arm, and compression mechanism can move on the surface of winding mold and be in pressure connection with the surface.

[0006] Preferably, the compression mechanism includes a mounting bracket mounted on the top of the rocker arm, a rotating compression roller is rotatably connected to the mounting bracket, and the surface of the rotating compression roller can rotate and move on the surface of the winding mold.

[0007] Preferably, one end of the movable support is fixedly connected with a fixed support beam, and the other end of the movable support is hingedly connected with a driving mechanism, and the output end of the driving mechanism is hingedly connected with the rocker arm.

[0008] Preferably, the movable support is in a Z-shaped structure, one end of the movable support is provided with a fixed groove matched with the fixed support beam, and the other end of the movable support is provided with a fixed seat, and the fixed seat is rotatably connected with the driving mechanism through a pin shaft.

[0009] Preferably, the driving mechanism comprises a connecting base rotatably connected with the fixed seat through a pin shaft, a pneumatic cylinder fixedly installed on the connecting base, and a connecting head fixedly connected with an output end of the pneumatic cylinder and rotatably connected with the rocker arm through a pin shaft.

[0010] Preferably, the two ends of the rotary pressing roller are fixedly installed on the mounting frame through fixing bolts.

[0011] Preferably, the pin shafts of the movable support, the rocker arm, the fixed seat, the connecting base and the connecting head are all provided with snap springs.

[0012] Preferably, when the winding operation is performed, after a layer of interlayer insulation pad is wound, a layer of coil is wound on the interlayer insulation pad, and the operation is repeated, wherein, when the interlayer insulation pad is wound, the pressing mechanism is used for pressing, the forward direction of the pressing mechanism switch is started, the pneumatic cylinder is extended, the rocker arm is lifted with the rotary pressing roller, the interlayer insulation pad is pressed, the rotary pressing roller presses and rotates with the interlayer insulation pad, after the interlayer insulation pad is wound for one turn, the head and tail of the interlayer insulation pad are adhered by adhesive tape according to requirements, and finally the reverse direction of the pressing mechanism switch is started, the pneumatic cylinder is retracted, and the rocker arm is lowered with the rotary pressing roller.

[0013] Compared with the prior art, the utility model has the advantages that the utility model discloses a kind of pressing device for transformer coil winding, after placing high-voltage interlayer insulation pad and fixing, rotary pressing roller is pressed and rotates with interlayer insulation pad, so as to realize that interlayer insulation pad is wound tightly, rotary pressing roller is installed on rocker arm, and rocker arm and pneumatic cylinder are installed on movable support by bolt, and can be freely moved, when pneumatic cylinder is connected with compressed air, the direction of gas can be changed by pneumatic valve, the extension and retraction of pneumatic cylinder are realized, so as to control the up and down of rocker arm, finally realize the action of pressing high-voltage coil interlayer insulation pad and loosening, the flexibility of installation and the rapid action of pneumatic cylinder are utilized, so as to realize that high-voltage interlayer insulation pad is pressed and rotated conveniently, quickly and safely, realize that interlayer insulation pad is wound tightly, and operation is flexible, convenient, safe, small in size, simple and practical.

[0014] Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a kind of for the three-dimensional structure diagram of pressing device for transformer coil winding Figure One .

[0016] Figure 2 isometric view of a pressing device for transformer coil winding Figure Two .

[0017] Figure 3 isometric exploded view of a pressing device for transformer coil winding.

[0018] Figure 4 isometric view of a pressing device for transformer coil winding

[0019] Figure 5 isometric view of a pressing mechanism of a pressing device for transformer coil winding

[0020] In the figure: 1, winding main body; 11, winding shaft; 12, winding mold; 2, movable support; 21, fixed support beam; 22, driving mechanism; 221, connecting base; 222, air cylinder; 223, connecting head; 23, fixed groove; 24, fixed seat; 3, rocker arm; 4, pressing mechanism; 41, mounting frame; 42, rotating press roller. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below with reference to the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application. All other examples obtained by those skilled in the art without making creative efforts fall within the scope of the present application.

[0022] In combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a compression device for transformer coil winding includes a winding body 1, which comprises a winding shaft 11 with a winding mold 12 arranged thereon. A movable movable support 2 is arranged on one side of the winding mold 12. A rocker arm 3 is rotatably connected to the movable support 2 through an axle pin. A compression mechanism 4 is arranged at the top end of the rocker arm 3 and can move on the surface of the winding mold 12 and be in pressure connection with the surface. Specifically, the compression device for efficient winding of transformer coils improves winding precision and efficiency while ensuring the tightness and uniformity of the coils. The winding shaft 11 ensures high stability and durability even under long-time high-speed rotation. The winding shaft 11 is also equipped with an intelligent speed regulation system that can automatically adjust the rotation speed according to the specifications of the coil, achieving precise control. The winding mold 12 can be quickly replaced according to the size and shape of different transformer coils. The surface of the winding mold 12 is covered with a special wear-resistant and anti-static coating to protect the copper wire from damage and ensure the continuity and stability of the winding process. The movable support 2 is arranged on one side of the winding mold 12. Users can adjust the position of the movable support 2 as needed to adapt to the winding needs of coils of different lengths. At the same time, the movable support 2 is equipped with a locking device to ensure that it does not slide accidentally during winding. The rocker arm 3 is flexibly rotatable through the axle pin with the movable support 2. The design of the rocker arm 3 fully considers the ergonomic principle, making it labor-saving and flexible, and facilitating workers to adjust the pressure and direction according to the winding progress. The compression mechanism 4 is the core part of the device, which automatically adjusts the extension amount through the control system to maintain a constant compression force, avoiding quality problems of the coil caused by over-tightening or over-loosening. The compression mechanism 4 also has an automatic tracing function, which can automatically adjust the position of the compression wheel according to the profile of the winding mold 12, ensuring the uniformity and consistency of the coil winding. The entire compression device is also equipped with an advanced intelligent control system, which integrates sensors, PLC controllers and human-machine interfaces to realize precise control and real-time monitoring of winding speed, compression force, support position and other parameters. The system can automatically adjust the working state according to the preset process parameters, improve production efficiency and reduce labor intervention cost.

[0023] In combination Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the pressing mechanism 4 includes a mounting bracket 41 installed at the top end of the rocker arm 3, and a rotating pressure roller 42 is rotatably connected to the mounting bracket 41. The surface of the rotating pressure roller 42 can rotate and move on the surface of the winding mold 12. Specifically, the pressing mechanism 4 is installed at the top end of the rocker arm 3 and is reliably connected to the rocker arm 3 through the stable mounting bracket 41. The mounting bracket 41 not only provides a solid support platform for the rotating pressure roller 42, but also ensures the stability and accuracy of the rotating pressure roller 42 during the winding process. The mounting bracket 41 is made of high-strength and lightweight materials, such as aluminum alloy or high-quality steel, to balance the structural strength and weight. Its design takes into account the needs of easy installation, adjustment and maintenance, and may contain adjusting screws or buckles and other components to fine-tune according to the specific size and shape of the winding mold 12. The rotating pressure roller 42 is the core component of the pressing mechanism 4, and its surface is covered with wear-resistant and low-friction materials such as polyurethane or special rubber to reduce wear on the coil surface and ensure uniform pressing. The diameter and length of the rotating pressure roller 42 are customized according to the size of the winding mold 12 and the winding requirements of the coil to ensure that it can fully cover and effectively press each layer of the coil. The rotating pressure roller 42 is internally equipped with bearings to allow it to freely rotate on the mounting bracket 41 while moving along the surface of the winding mold 12 as the rocker arm 3 swings. The rotating pressure roller 42 can adapt to changes in the shape of the coil while pressing the coil, avoiding local over-pressing or under-pressing. In order to ensure that the rotating pressure roller 42 can smoothly rotate and move on the surface of the winding mold 12, the pressing mechanism 4 is also equipped with corresponding driving and guiding mechanisms. These mechanisms may include spring-loaded systems, pneumatic / hydraulic cylinders or servo motors, etc., to provide the required pressing force and rotating power for the pressure roller. The pressing mechanism 4 provides an efficient, accurate and reliable pressing solution for the winding of transformer coils.

[0024] In combination with Figure 2 , Figure 3 , Figure 4 and Figure 5 , one end of the movable support 2 is fixedly connected with a fixed support beam 21, and the other end of the movable support 2 is hingedly connected with a driving mechanism 22, and the output end of the driving mechanism 22 is hingedly connected with the rocker arm 3. In combination with Figure 2 , Figure 3 , Figure 4 and Figure 5 , the movable support 2 is in a Z-shaped structure, one end of the movable support 2 is provided with a fixed groove 23 matched with the fixed support beam 21, and the other end of the movable support 2 is provided with a fixed seat 24, and the fixed seat 24 is rotatably connected with the driving mechanism 22 through a pin shaft. In combination with Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the driving mechanism 22 includes a connecting chassis 221 rotatably connected to the fixed seat 24 through a pin shaft, and a gas cylinder 222 fixedly installed on the connecting chassis 221. The output end of the gas cylinder 222 is fixedly connected with a connecting head 223, and the connecting head 223 is rotatably connected with the rocker arm 3 through a pin shaft. Specifically, the movable support 2 adopts a high-strength Z-shaped structure design, which not only ensures the stability of the structure, but also provides sufficient flexibility and strength to cope with various workloads. The Z-shaped structure enables the movable support 2 to effectively disperse and withstand forces and torques from different directions while maintaining a compact volume. The fixed support beam 21 is connected to one end of the movable support 2. The fixed support beam 21 can be welded, bolted, or connected by other high-strength methods to ensure that it does not loosen or fall off during use. At the same time, the design of the fixed support beam 21 also considers compatibility with the overall mechanical structure to facilitate installation and positioning. In order to match and stably connect with the fixed support beam 21, a fixed groove 23 is specially provided at one end of the movable support 2. The fixed groove 23 and the fixed support beam 21 are firmly locked together by fasteners such as bolts, pins, etc. The design of the fixed groove 23 not only improves the strength and stability of the connection, but also simplifies the installation and disassembly process. The other end of the movable support 2 is provided with a fixed seat 24, which can withstand the powerful force from the driving mechanism 22. The fixed seat 24 is rotatably connected with the driving mechanism 22 through a pin shaft, which not only ensures the flexibility of the connection, but also maintains a certain stability and reliability when transmitting power. The driving mechanism 22 is the core component of the movable support 2 for power transmission and action control. As the basic support structure of the driving mechanism 22, the connecting chassis 221 is rotatably connected with the fixed seat 24 through a pin shaft. This enables the driving mechanism 22 to swing and adjust within a certain range relative to the movable support 2 to adapt to different work requirements. The connecting chassis 221 also provides sufficient strength and stiffness to support the gas cylinder 222 and other related components. The gas cylinder 222 is the power source of the driving mechanism 22, which is installed on the connecting chassis 221 and fixedly connected with the connecting head 223 through its output end. When the gas cylinder 222 receives a control signal, it will quickly generate a pushing or pulling force to push the connecting head 223 to move linearly. The connecting head 223 is rotatably connected with the rocker arm 3 through a pin shaft, converting the linear motion of the gas cylinder 222 into the rotary motion of the rocker arm 3. The design of the connecting head 223 considers the efficiency and stability of the transmission to ensure that the rocker arm 3 can rotate according to the predetermined trajectory and speed. The movable support 2 and its driving mechanism 22 achieve flexible control and precise driving of the rocker arm 3 through precise design and efficient transmission mechanism, which not only improves the overall performance and stability of the mechanical system, but also makes it possible to achieve more complex and precise work tasks.

[0025] In combination Figure 2 , Figure 3 and Figure 4As shown, the two ends of the rotating pressure roller 42 are fixedly installed on the mounting frame 41 by fixing bolts. Specifically, the two ends of the rotating pressure roller 42 are designed with special mounting holes or mounting grooves, the positions, sizes and shapes of which are accurately calculated and processed to ensure perfect matching with the corresponding parts on the mounting frame 41. During installation, first, the rotating pressure roller 42 is placed in the predetermined position of the mounting frame 41, ensuring that the axis of the rotating pressure roller 42 is aligned with the guide shaft or bearing seat on the mounting frame to ensure the stability and smoothness of the pressure roller during rotation. Next, high-quality fixing bolts are used to firmly install the two ends of the rotating pressure roller 42 on the mounting frame 41. These fixing bolts are usually made of high-strength alloy materials with excellent fatigue resistance and corrosion resistance to ensure that they do not affect the working effect of the pressure roller due to loosening or breaking during long-term use. When installing the bolts, they need to be tightened according to the predetermined torque value to ensure the tight fit between the bolts and the mounting holes or mounting grooves and prevent stress concentration or loosening problems caused by overtightening or overtightening. At the same time, in order to further improve the stability and reliability of the installation, an appropriate amount of thread locking agent or installation locking washer and other anti-loosening devices can be applied between the bolt and the mounting hole. The process of fixing the rotating pressure roller 42 on the mounting frame 41 by fixing bolts is a precise and complex operation process that needs to be strictly in accordance with the design requirements and technical specifications. Only in this way can we ensure that the rotating pressure roller 42 can stably and reliably operate during work, providing strong support for the winding of the transformer coil.

[0026] In combination Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the movable bracket 2 and the rocker arm 3, the fixed seat 24 and the connecting chassis 221, and the connecting head 223 and the pin shaft of the rocker arm 3 are all provided with a snap spring. Specifically, in mechanical design, the snap spring is a common fastener, mainly used to prevent the disconnection of the components moving axially, to ensure the stability and safety of the connection. At the hinge between the movable bracket 2 and the rocker arm 3, the pin shaft serves as the connecting medium between the two, and its stability is crucial to the operation of the entire mechanical system. In order to prevent the pin shaft from falling off due to vibration or external force during use, a snap spring is particularly provided on the pin shaft. The snap spring is installed on one end or both ends of the pin shaft, tightly holding the pin shaft through its elastic deformation, effectively preventing the axial movement of the pin shaft, and ensuring the stable and reliable connection between the movable bracket 2 and the rocker arm 3. At the rotary connection between the fixed seat 24 and the connecting chassis 221, a combination of pin shaft and snap spring is also used. The snap spring here not only prevents the pin shaft from falling off, but also assists in the flexible rotation of the connecting chassis 221 relative to the fixed seat 24 through its elastic force. The installation position of the snap spring is usually carefully designed to ensure that it can provide sufficient holding force without causing excessive resistance to rotation. The connecting head 223 is a key connecting component between the output end of the air cylinder 222 and the rocker arm 3, and its stability directly affects the efficiency and accuracy of the air cylinder power transmission. The snap spring on the pin shaft between the connecting head 223 and the rocker arm 3 can ensure that the two will not accidentally separate due to external forces during connection. The selection and installation position of the snap spring need to consider the rotation range of the rocker arm 3, the stress condition and the thrust size of the air cylinder, to ensure that the stability of the connection can be maintained in extreme working conditions. By setting snap springs on the pin shafts of the movable bracket 2 and the rocker arm 3, the fixed seat 24 and the connecting chassis 221, and the connecting head 223 and the rocker arm 3, the stability and safety of these key connection parts can be significantly improved, providing a strong guarantee for the stable operation of the entire mechanical system.

[0027] In combination Figure 2 , Figure 3 and Figure 4As shown, when winding operation, after winding a layer of interlayer insulation pad, then winding a layer of coil on the interlayer insulation pad, so repeat, wherein, in winding interlayer insulation pad, need to be through the compression mechanism 4 compression, positive direction start compression mechanism 4 switch, cylinder 222 stretch out action, rocker arm 3 with rotating press roller 42 rise, press interlayer insulation pad, rotating press roller 42 press interlayer insulation pad and rotate with winding, interlayer insulation pad winding a circle, according to the requirements of the head and tail of interlayer insulation pad with adhesive tape stick firm, finally reverse direction open compression mechanism 4 switch, cylinder 222 retract action, rocker arm 3 with rotating press roller 42 downlink. Specifically, in the process of winding transformer coil, the laying and compression of interlayer insulation pad is a crucial link, which is directly related to the insulation performance and overall quality of the coil. Ensure that the winding mold 12 has been correctly installed and fixed on the workbench. Check that the compression mechanism 4, cylinder 222, rocker arm 3 and rotating press roller 42 and other components are in good condition, no damage or loose phenomenon. Prepare the required interlayer insulation pad and coil material, and adhesive tape for fixing the interlayer insulation pad. Place the interlayer insulation pad gently on the predetermined position of the winding mold 12, pay attention to keep it flat without wrinkles. If necessary, auxiliary tools such as rollers or brushes can be used to gently smooth the surface of the insulation pad to eliminate bubbles and wrinkles. Positive direction start compression mechanism 4 switch, at this time the cylinder 222 begins to stretch out action. With the extension of the cylinder 222, the rocker arm 3 is driven to move upward, while the rotating press roller 42 also rises. When the rotating press roller 42 contacts the interlayer insulation pad, continue to apply pressure until it is firmly compressed on the winding mold 12. At this time, a certain friction force is formed between the rotating press roller 42 and the interlayer insulation pad. In the compression state, start the rotating function of the winding machine, and the winding mold 12 begins to rotate. Due to the friction force between the rotating press roller 42 and the interlayer insulation pad, the rotating press roller 42 will rotate with the rotation of the winding mold 12, and at the same time compress the interlayer insulation pad, ensuring that it remains flat and tightly attached during winding. After winding a circle of interlayer insulation pad, check whether it is evenly covered on the winding mold 12 without misalignment or loosening. According to the requirements, use adhesive tape to stick the head and tail of the interlayer insulation pad to ensure that it does not shift or fall off during subsequent winding. After completing the laying and fixing of the interlayer insulation pad, reverse direction open compression mechanism 4 switch. At this time the cylinder 222 begins to retract action, drive rocker arm 3 and rotating press roller 42 to move downward until completely leaving the surface of the interlayer insulation pad. Repeat the above steps to continue laying the interlayer insulation pad of the next layer and perform compression, rotating winding and fixing operations. After the interlayer insulation pad is laid, the winding of the coil on this layer can be started, and the process is repeated until the entire winding of the coil is completed.

[0028] The above merely is the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the present utility model within the technical range disclosed by the present utility model makes equivalent replacement or change, should be covered in the protection scope of the present utility model.

Claims

1. A pressing device for transformer coil winding, comprising a winding body (1), characterized in that, The winding main body (1) comprises a winding shaft (11), a winding mold (12) is arranged on the winding shaft (11), one side of the winding mold (12) is provided with a movable movable support (2), the movable support (2) is rotatably connected with a rocker arm (3) through an axle pin, the top end of the rocker arm (3) is provided with a pressing mechanism (4), and the pressing mechanism (4) can move on the surface of the winding mold (12) and be in pressure connection with the surface.

2. A compression device for transformer coil winding according to claim 1, characterized in that, The pressing mechanism (4) comprises a mounting frame (41) mounted on the top end of the rocker arm (3), and a rotary pressing roller (42) is rotatably connected to the mounting frame (41); the surface of the rotary pressing roller (42) can rotate and move on the surface of the winding mold (12).

3. A compression device for transformer coil winding according to claim 2, characterized in that, One end of the movable support (2) is fixedly connected with a fixed support beam (21), and the other end of the movable support (2) is hingedly connected with a driving mechanism (22); the output end of the driving mechanism (22) is hingedly connected with the rocker arm (3).

4. A compression device for transformer coil winding according to claim 3, characterized in that, The movable support (2) is in Z-shaped structure, one end of the movable support (2) is provided with a fixed groove (23) matched with the fixed support beam (21), and the other end of the movable support (2) is provided with a fixed seat (24); the fixed seat (24) is rotatably connected with the driving mechanism (22) through a pin shaft.

5. A compression device for transformer coil winding according to claim 4, characterized in that, The driving mechanism (22) comprises a connecting base (221) rotatably connected with the fixed seat (24) through a pin shaft, a gas cylinder (222) is fixedly installed on the connecting base (221), a connecting head (223) is fixedly connected with the output end of the gas cylinder (222), and the connecting head (223) is rotatably connected with the rocker arm (3) through a pin shaft.

6. A compression device for transformer coil winding according to claim 5, characterized in that Both ends of the rotary pressing roller (42) are fixedly installed on the mounting frame (41) through fixing bolts.

7. A compression device for transformer coil winding according to claim 6, characterized in that The pin shafts of the movable support (2), the rocker arm (3), the fixed seat (24), the connecting base (221) and the connecting head (223) are all provided with snap springs.

8. A compression device for transformer coil winding according to claim 7, characterized in that, When winding, after winding a layer of interlayer insulation pad, a layer of coil is wound on the interlayer insulation pad, and the process is repeated; when winding the interlayer insulation pad, the pressing mechanism (4) is used for pressing, the pressing mechanism (4) switch is started in the positive direction, the gas cylinder (222) is extended, the rocker arm (3) is lifted with the rotary pressing roller (42), the interlayer insulation pad is pressed, the rotary pressing roller (42) presses and rotates the interlayer insulation pad, after winding a layer of the interlayer insulation pad, the head and tail of the interlayer insulation pad are adhered according to requirements, finally, the pressing mechanism (4) switch is opened in the reverse direction, the gas cylinder (222) is retracted, and the rocker arm (3) is lowered with the rotary pressing roller (42).

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