Medium-high frequency induction heating motor shell sleeving equipment
Through the medium and high frequency induction heating method, the motor housing is uniformly heated, which solves the problems of uneven heating and deformation caused by flame heating, improves assembly quality and avoids damage.
Patent Information
- Application Number
- CN202411689047.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-02-25
AI Technical Summary
The existing motor housing heating method uses flame heating, which leads to uneven heating, affects assembly quality, and may cause deformation and damage to the motor housing.
The medium and high frequency induction heating method is used to heat the iron core through the induction coil, and the heat is transmitted to the heating sleeve, which is used to heat the motor shell to ensure uniform heating and avoid deformation.
The uniform heating and equal expansion of the motor housing are achieved, the assembly quality is improved, and deformation and damage of the motor housing is avoided. At the same time, damage to the induction coil is avoided through water cooling.
Smart Images
Figure CN119519314A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an induction heating device for motor housing set. Background Art
[0002] There are generally two types of motor casings, one is cast aluminum casing and the other is stretched aluminum casing. The inner diameter of the aluminum casing and the outer diameter of the spindle are interference fit. Therefore, during assembly, the aluminum casing must be heated and expanded to fit with the spindle. Currently, flame heating is used, and a blowtorch is used to heat the aluminum casing. Due to uneven heating temperature or excessive local temperature, the aluminum casing cannot be evenly heated and expanded equally, affecting the assembly quality. Secondly, the aluminum casing is easily deformed and damaged. Summary of the invention
[0003] The purpose of the present invention is to provide a device for heating a motor housing by using a medium-high frequency induction heating method.
[0004] The technical solution of the present invention is: a medium-high frequency induction heating motor housing set equipment, including a workbench, a medium-high frequency induction circuit is installed in the workbench, a heating sleeve is installed in the workbench, there is an iron core in the heating sleeve, the heating sleeve and the iron core are fixed to the workbench by bolts, the induction coil is sleeved on the outer periphery of the iron core, and the two ends of the induction coil are connected to electric busbars, which are connected to the load of the medium-high frequency induction circuit.
[0005] The induction coil is made of copper tube, and is provided with a water inlet interface and a water outlet interface. The water inlet pipe of the water pump is connected to the circulating cooling water tank, the water outlet pipe of the water pump is connected to the water inlet interface on the induction coil of the induction coil, and the water inlet pipe of the circulating cooling water tank is connected to the water outlet interface of the induction coil.
[0006] The present invention has the following technical effects: induction heating is adopted, the induction coil induction heats the iron core, the heated iron core conducts the heat to the heating sleeve, and the motor housing is covered on the heating sleeve for heating. Firstly, the heating is uniform and expands equally, thereby improving the quality of the interference fit between the motor housing and the spindle. Secondly, deformation and damage of the motor housing are not caused. The coil is cooled by water flow to avoid burning of the coil during the heating process. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a structural schematic diagram of the present invention.
[0008] Figure 2 It is a schematic diagram of the structure of the induction coil.
[0009] Figure 3 It is a medium and high frequency induction circuit diagram. DETAILED DESCRIPTION
[0010] like Figure 1 , Figure 2As shown, a medium-high frequency induction heating motor housing set device includes a workbench 1, a medium-high frequency induction circuit 7 is installed in the workbench 1, a heating sleeve 2 is installed in the workbench 1, an iron core 4 is arranged in the heating sleeve 2, the heating sleeve 2 and the iron core 4 are fixed to the workbench 1 by bolts 5, an induction coil 3 is sleeved on the outer periphery of the iron core 4, and electric bus 6 is connected to the two ends of the induction coil 3, and the electric bus 6 is connected to the load of the medium-high frequency induction circuit 7.
[0011] The induction coil 3 is made of a copper tube, and is provided with a water inlet interface 3-1 and a water outlet interface 3-2. The water inlet pipe of the water pump 8 is connected to the circulating cooling water tank 9, and the water outlet pipe of the water pump 8 is connected to the water inlet interface 3-1 on the induction coil 3 of the induction coil 3, and the water inlet pipe of the circulating cooling water tank 9 is connected to the water outlet interface 3-2 of the induction coil 3.
[0012] like Figure 3 As shown, the medium and high frequency induction heating circuit includes: a three-phase rectifier bridge, an IGBT inverter drive, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; three-phase power supplies A, B, and C are connected to the A, B, and C ends of the three-phase rectifier bridge, and the three-phase rectifier bridge is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC absorption circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit is composed of a parallel filter capacitor C1 and a discharge resistor R2. The RC absorption circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4; the IGBT half-bridge inverter is connected to the induction coil L2; the charging The Kc1 and Kc2 terminals of the relay coil J are connected to the Kc1 / Kc2 pins of the mainboard PLC, the filter circuit is connected to the input voltage detection pin of the mainboard PLC, the IGBT inverter drive is respectively connected to the IGBT half-bridge inverter and the inverter drive pins of the mainboard PLC, the touch screen is connected to the Rs485 pin of the mainboard PLC, the switch power supply is connected to the DC24V pin of the mainboard PLC, the input current sampling coil L1 is connected to the three-phase power supply, the current sampling coil L1 is connected to the input current detection pin of the mainboard PLC, the three-phase power supply A, B, C are connected to the A, B, C three-phase detection pins of the mainboard PLC; the output current sampling coil L3 is connected to the connection terminal of the GBT half-bridge inverter and the induction coil L2, the current sampling coil L3 is connected to the output current detection pin of the mainboard PLC; the start, stop and detection buttons are connected to the signal input pin of the mainboard PLC.
Claims
1. A medium-high frequency induction heating motor housing set device, comprising a workbench (1), in which a medium-high frequency induction circuit (7) is installed, characterized in that: A heating sleeve (2) is installed on a workbench (1), an iron core (4) is arranged in the heating sleeve (2), the heating sleeve (2) and the iron core (4) are fixed on the workbench (1) by bolts (5), an induction coil (3) is sleeved on the outer periphery of the iron core (4), two ends of the induction coil (3) are connected to electric bars (6), and the electric bars (6) are connected to the load of a medium-high frequency induction circuit (7).
2. According to claim 1, a medium and high frequency induction heating motor housing suit equipment is characterized in that: The induction coil (3) is made of a copper tube, and is provided with a water inlet interface (3-1) and a water outlet interface (3-2). The water inlet pipe of the water pump (8) is connected to the circulating cooling water tank (9), the water outlet pipe of the water pump (8) is connected to the water inlet interface (3-1) on the induction coil (3) of the induction coil (3), and the water inlet pipe of the circulating cooling water tank (9) is connected to the water outlet interface (3-2) of the induction coil (3).