Electromagnetic induction riding wheel hot charging equipment

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to electromagnetic induction riding wheel hot charging equipment. The device comprises a support, a riding wheel is placed on the support, asbestos cloth wraps the periphery of the riding wheel, an induction coil is wound on the asbestos cloth, a temperature measuring unit is arranged on the riding wheel, and the temperature measuring unit and the induction coil are both electrically connected with a control cabinet. The bracket is a liftable bracket, and universal wheels with locking structures are arranged at the bottom of the bracket, so that the equipment can be conveniently moved and positioned between stations; the asbestos cloth is of a double-layer composite structure, the inner layer is high-temperature-resistant ceramic fiber cloth, the outer layer is a silicone rubber coating, and fixing buckles are evenly distributed on the contact face of the asbestos cloth and the riding wheel. The riding wheel can be heated through the electromagnetic induction coil, meanwhile, the electromagnetic induction coil can be adjusted according to the diameter and the length of the riding wheel, and the applicability is high; the electromagnetic induction riding wheel hot charging method and equipment are light and simple and are not influenced by the field.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to an electromagnetic induction roller heat-fitting device. Background Technology

[0002] In metallurgical and rotary kiln equipment, the roller bearing assembly is a key component supporting the rotating parts of the rotary kiln. The roller and roller shaft are interference-fitted, and the roller shaft needs to be heat-fitted. Currently, the roller is mainly heat-fitted by heating it in a furnace. This method is energy-intensive, difficult to control the temperature, and challenging to measure the roller temperature. During the heating process, overheating can easily occur, causing the roller surface temperature to be too high, resulting in a "blue" appearance and reduced surface hardness, thus affecting the roller's service life. On the other hand, if the roller is heated to a low temperature, the roller's thermal expansion will be insufficient, causing the roller shaft to fail to fit into the roller or become stuck in the roller shaft hole, resulting in assembly failure and rendering both the roller and roller shaft unusable. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electromagnetic induction roller heat fitting device that can control the heating temperature and has strong applicability.

[0004] The technical solution of this utility model is as follows:

[0005] An electromagnetic induction roller heat-fitting device includes a bracket on which a roller is placed. The roller is wrapped with asbestos cloth, and an induction coil is wound on the asbestos cloth. A temperature measuring unit is installed on the roller. The temperature measuring unit and the induction coil are both electrically connected to a control cabinet.

[0006] Preferably, the support is a liftable support, and the bottom of the support is equipped with casters with locking structure to facilitate the movement and positioning of the equipment between workstations.

[0007] Preferably, the asbestos cloth has a double-layer composite structure, with the inner layer being high-temperature resistant ceramic fiber cloth and the outer layer being a silicone rubber coating, and the contact surface between the asbestos cloth and the support roller is provided with evenly distributed fixing buckles.

[0008] Preferably, the temperature measuring unit includes at least three thermocouples circumferentially distributed at 120°, and the thermocouple measuring ends are embedded in the support roller to a depth of 1 / 3 to 1 / 2 of the support roller radius.

[0009] Preferably, it also includes a safety alarm system linked to the temperature measuring unit, which automatically cuts off the power supply to the induction coil and activates the audible and visual alarm device when the temperature of the roller exceeds a preset threshold.

[0010] Preferably, the control cabinet is equipped with a PID temperature controller and a phase angle adjustment module, which can automatically adjust the current frequency and power output of the induction coil according to a preset temperature curve.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] This application combines a control cabinet and a temperature measurement unit to monitor and display temperature changes in various parts of the support roller in real time, enabling precise control of the heating process. By using an induction coil, it can adapt to the heat-fitting requirements of various specifications of support rollers, and the user-friendly interface significantly improves work efficiency. Equipped with an online measurement system, it monitors the changes in the inner hole size of the support roller in real time during the heating process, ensuring that the heat-fitting process parameters are dynamically controllable. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall connection circuit of this utility model.

[0016] In the diagram: 1. Support frame; 2. Support roller; 3. Asbestos cloth; 4. Induction coil; 5. Temperature measuring unit; 6. Control cabinet. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0018] Example

[0019] like Figure 1As shown, this embodiment provides an electromagnetic induction roller 2 heat-fitting device, including a bracket 1, on which a roller 2 is placed. The roller 2 is wrapped with an asbestos cloth 3, and an induction coil 4 is wound around the asbestos cloth 3. A temperature measuring unit 5 is installed on the roller 2, and both the temperature measuring unit 5 and the induction coil 4 are electrically connected to a control cabinet 6. By setting the control cabinet 6, the heating current of the induction coil 4 is controlled, the temperature control signal from the temperature measuring unit 5 is received, and the heating speed is controlled, automatically stopping when the set temperature is reached. The induction coil 4 is evenly wound on the outer surface of the roller 2. Different lengths of induction coil 4 can be used according to the size of the roller 2. After being energized by the control cabinet 6, the roller 2 is heated by electromagnetic induction. The asbestos cloth 3 wraps around the outer surface of the roller 2, separating the induction coil 4 and the roller 2, so that the roller 2 is heated evenly and preventing local overheating.

[0020] In this application, for a support roller with an outer diameter of approximately 480mm, the induction coil is made of a hollow copper tube with an outer diameter of 8mm and a wall thickness of 1mm, internally cooled by water to balance high conductivity and heat dissipation requirements. The total length of the induction coil is 15 meters, with a single-turn coil circumference of 1.5m, a total of 10 turns, and a coil spacing of 20mm. The copper tube is covered with a high-temperature silicone insulation layer resistant to 300℃ to prevent short circuits between turns. The coil length can be adjusted for different support roller sizes. When the outer diameter of the support roller increases to 600mm, the single-turn circumference increases to 1.88m, and the total length expands to 18.8m. The heating power is matched by increasing or decreasing the number of turns (e.g., 8 to 12 turns). The coil is wound equidistantly along the axial direction of the support roller and positioned using fixing clips (50mm spacing) on ​​asbestos cloth to ensure uniform coil spacing. The clips are made of high-temperature resistant nylon and embedded in the silicone coating of the asbestos cloth to prevent slippage.

[0021] Preferably, the bracket 1 is a liftable bracket 1, and the bottom of the bracket 1 is equipped with casters with locking structures to facilitate the movement and positioning of the equipment between workstations. The support roller 2 is placed on the bracket 1 to facilitate the insertion of the support roller 2 shaft into the support roller 2 hole.

[0022] Preferably, the asbestos cloth 3 has a double-layer composite structure, with the inner layer being high-temperature resistant ceramic fiber cloth and the outer layer being a silicone rubber coating, and the contact surface between the asbestos cloth 3 and the support roller 2 is provided with evenly distributed fixing buckles.

[0023] Preferably, the temperature measuring unit 5 includes at least three thermocouples circumferentially distributed at 120°, and the thermocouple measuring ends are embedded in the support roller 2 to a depth of 1 / 3 to 1 / 2 of the radius of the support roller 2. By setting the temperature measuring unit 5, the real-time temperature of the support roller 2 is measured. The included magnetic device can be attracted to any position of the support roller 2, and multiple temperature measuring units 5 can be used simultaneously to measure the real-time temperature of different positions of the support roller 2.

[0024] Preferably, it also includes a safety alarm system linked to the temperature measuring unit 5, which automatically cuts off the power supply to the induction coil 4 and activates the audible and visual alarm device when the temperature of the roller 2 exceeds a preset threshold.

[0025] Preferred, such as Figure 2 As shown, the control cabinet 6 is equipped with a PID temperature controller and a phase angle adjustment module, which can automatically adjust the current frequency and power output of the induction coil 4 according to the preset temperature curve. The phase angle module in the control cabinet dynamically adjusts the current frequency (1~10kHz). The higher the frequency, the more significant the skin effect and the shallower the heating depth, which is suitable for thin-walled rollers; low frequency (1~3kHz) is used for deep heating of thick-walled rollers.

[0026] Working principle:

[0027] In use, first, position the support roller 2 on the bracket 1. The bracket 1 should avoid the hole area of ​​the support roller 2 to leave room for assembly. Then, wrap the outer surface of the support roller 2 evenly with asbestos cloth 3 as a heat insulation layer. Next, wind the induction coil 4 around the surface of the support roller 2 at equal intervals to ensure consistent coil spacing and optimize heating effect. Connect the coil to the power interface of the control cabinet 6. Simultaneously, install temperature measuring units 5 on the end face, inner hole, and outer circle of the support roller 2. Real-time data transmission to the interface of the control cabinet 6 enables multi-point temperature visualization monitoring. The operator sets the voltage and current parameters through the control cabinet 6 and dynamically adjusts the heating rate. After the overall temperature of the support roller 2 reaches the preset threshold, immediately measure the inner hole expansion dimension. After confirming that it meets the heat fitting tolerance requirements, accurately assemble the shaft of the support roller 2. After heat fitting is completed, the system automatically stops heating and enters the cooling stage. Once the support roller 2 returns to normal temperature, the induction coil 4 and temperature measuring device can be removed. The entire heat fitting process is completed efficiently in a closed loop.

[0028] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. An electromagnetic induction roller heat-fitting device, characterized in that, Includes a bracket (1), on which a support roller (2) is placed, the support roller (2) is wrapped with an asbestos cloth (3), an induction coil (4) is wound on the asbestos cloth (3), and a temperature measuring unit (5) is provided on the support roller (2). The temperature measuring unit (5) and the induction coil (4) are both electrically connected to the control cabinet (6).

2. The electromagnetic induction roller (2) hot-fitting device as described in claim 1, characterized in that, The bracket (1) is a liftable bracket (1), and the bottom of the bracket (1) is equipped with casters with locking structure.

3. The electromagnetic induction roller heat-fitting device as described in claim 1, characterized in that, The asbestos cloth (3) has a double-layer composite structure. The inner layer is a high-temperature resistant ceramic fiber cloth, and the outer layer is a silicone rubber coating. The contact surface between the asbestos cloth (3) and the support roller (2) is provided with uniformly distributed fixing buckles.

4. The electromagnetic induction roller heat-fitting device as described in claim 1, characterized in that, The temperature measuring unit (5) includes at least three thermocouples arranged circumferentially at 120°, and the thermocouple measuring ends are embedded in the support roller (2) to a depth of 1 / 3 to 1 / 2 of the radius of the support roller (2).

5. The electromagnetic induction roller heat-fitting device as described in claim 1, characterized in that, It also includes a safety alarm system linked to the temperature measuring unit (5).

6. The electromagnetic induction roller heat-fitting device as described in claim 1, characterized in that, The control cabinet (6) is equipped with a PID temperature controller and a phase angle adjustment module.

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