Motor stator installation electric heating device

Abstract

The utility model discloses a motor stator installation electric heating device which comprises a heating operation table and a heating coil, an adjusting bin is arranged on the inner side of the heating operation table, a cross-shaped sliding groove is formed in the upper portion of the adjusting bin, four positioning plates are installed on the inner side of the adjusting bin in a sliding mode, an electric telescopic rod is fixed to the inner side of the adjusting bin, and the cross-shaped sliding groove is formed in the upper portion of the adjusting bin. Four adjusting plates are arranged on the periphery of the electric telescopic rod, the adjusting plates are distributed around the axis of the electric telescopic rod in a circular array mode, the adjusting plates are slidably connected with the bottom face of the adjusting bin, the bottom end of the positioning plate is slidably inserted into the adjusting plates, and an adjusting push plate is fixed to the top end of the electric telescopic rod; four box guide strips are arranged on the periphery of the adjusting push plate, the four guide strips are fixed to the four adjusting plates respectively, and two elastic cross-shaped connecting belts are fixed among the four guide strips. According to the utility model, by ensuring that the axis of the casing coincides with the axis of the electric telescopic rod, the casing and the heating coil are kept at the same distance, so that the casing is uniformly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor-mounted heating devices, in particular to a motor stator-mounted electric heating device. Background Art

[0002] The motor is an electric motor or engine. Its working principle is that the energized coil is rotated in the magnetic field to drive the starter rotor to rotate, and the small gear on the rotor drives the engine flywheel to rotate. The motor consists of a stator and rotor, a transmission mechanism, an electromagnetic mechanism, carbon brushes and a commutator, bearings and shafts, a housing and terminals, a controller and other structures.

[0003] The motor needs to be heated during installation. The main reason is to improve assembly accuracy and prevent motor failure. By heating, the motor housing can be heated and expanded evenly, so that the stator can be smoothly inserted, improving the accuracy and stability of the assembly. Heated installation can avoid motor failures caused by improper assembly and ensure the stability and reliability of the motor during operation.

[0004] However, when the motor is installed to heat the casing, the casing is placed randomly inside the heating coil, and the distance between the casing and the coil is unevenly distributed, resulting in uneven heating of the casing; therefore, it does not meet the existing needs. We have proposed a motor stator mounted electric heating device. Utility Model Content

[0005] The purpose of the present utility model is to provide a motor stator mounted electric heating device to solve the problem proposed in the above background technology that when the motor is installed to heat the casing, the casing is arbitrarily placed inside the heating coil, the distance between the casing and the coil is unevenly distributed, resulting in uneven heating of the casing, affecting the matching accuracy between the motor stator and the stator after installation, and the like.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor stator mounted electric heating device, comprising a heating operating table and a heating coil, an adjusting chamber is provided on the inner side of the heating operating table, a cross slide is provided above the adjusting chamber, four positioning plates are slidably installed on the inner side of the cross slide, an electric telescopic rod is fixed on the inner side of the adjusting chamber, four adjusting plates are provided around the electric telescopic rod, the adjusting plates are distributed in a circular array around the axis of the electric telescopic rod, the adjusting plate is slidably connected to the bottom surface of the adjusting chamber, the bottom end of the positioning plate is slidably inserted into the inside of the adjusting plate, an adjusting push plate is fixed to the top of the electric telescopic rod, four guide strips are provided around the adjusting push plate, the four guide strips are respectively fixed to the four adjusting plates, and two elastic cross connecting belts are fixed between the four guide strips.

[0007] Preferably, a power supply is installed inside the heating operating table, and the heating coil is installed on the upper surface of the heating operating table.

[0008] Preferably, the heating coil is distributed in a spiral above the heating operating table, and both ends of the heating coil are hung through the upper surface of the heating operating table and extend into the interior of the heating operating table, and the two ends of the heating coil are respectively connected to the positive and negative poles of the power supply.

[0009] Preferably, both ends of the guide bar are inclined at a forty-five degree angle toward the adjustment plate, and the middle portion of the guide bar remains parallel to the adjustment plate.

[0010] Preferably, the outer surface of the adjusting push plate is an inclined slope, and the inclination angle of the side of the adjusting push plate is forty-five degrees.

[0011] Preferably, a U-shaped groove is provided on the inner side of the positioning plate, and a positioning pulley is rotatably installed on the inner side of the U-shaped groove, and a portion of the positioning pulley protrudes from the positioning plate.

[0012] Preferably, a return spring is installed inside the adjustment plate, and the top end of the return spring is fixed to the bottom end of the positioning plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model drives the adjustment push plate upward by energizing the electric telescopic rod. The adjustment push plate squeezes the guide strip, causing the four adjustment plates to drive the positioning plates away from each other, thereby causing the positioning plates to slide inside and causing the positioning pulley to contact the inner wall of the casing. The positioning pulley is used to position and clamp the motor casing from the inside, ensuring that the axis of the casing coincides with the axis of the electric telescopic rod and the center line of the heating coil, so that the distance between the casing and the heating coil is kept the same at all locations, ensuring that the casing is heated evenly.

[0015] 2. The positioning plate of the utility model contacts the inner wall of the casing through the positioning pulley. When the stator is installed, the stator presses the positioning plate downward, and the positioning pulley slides along the inner wall of the casing, so that the positioning plate smoothly enters the interior of the adjustment plate, ensuring that the installation process of the stator is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of the heating operating table of the utility model;

[0018] Figure 3 This is a top view of the structure of the heating operating table of the utility model;

[0019] Figure 4 This is a structural diagram of the guide strip of the utility model.

[0020] In the figure: 1. Heating operating table; 2. Heating coil; 3. Adjustment chamber; 4. Electric telescopic rod; 5. Adjustment plate; 6. Guide bar; 7. Adjustment push plate; 8. Positioning plate; 9. Positioning pulley; 10. Return spring; 11. Elastic cross connecting belt; 12. Cross slide. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] like Figures 1 to 4 As shown, a motor stator is installed with an electric heating device, and a power supply is also installed inside the heating operation table 1. The heating coil 2 is installed on the upper surface of the heating operation table 1. The heating coil 2 is spirally distributed above the heating operation table 1, and both ends of the heating coil 2 are hung through the upper surface of the heating operation table 1 and extend into the interior of the heating operation table 1. The two ends of the heating coil 2 are respectively connected to the positive and negative poles of the power supply. The power supply supplies power to the heating coil 2, so that the heating coil 2 heats the casing after being energized, so that the casing expands due to heat, which facilitates the installation of the stator.

[0023] An adjustment bin 3 is provided on the inner side of the heating operating table 1, a cross slide 12 is provided above the adjustment bin 3, four positioning plates 8 are slidably installed on the inner side of the cross slide 12, an electric telescopic rod 4 is fixed on the inner side of the adjustment bin 3, four adjustment plates 5 are provided around the electric telescopic rod 4, the adjustment plates 5 are distributed in a circular array around the axis of the electric telescopic rod 4, the adjustment plates 5 are slidably connected to the bottom surface of the adjustment bin 3, the bottom end of the positioning plate 8 is slidably inserted into the inside of the adjustment plate 5, the top of the electric telescopic rod 4 is fixed with an adjustment push plate 7, and four box guides are provided around the adjustment push plate 7. The guide bar 6, the four guide bars 6 are fixed to the four adjustment plates 5 respectively, and two elastic cross connecting belts 11 are fixed between the four guide bars 6. The electric telescopic rod 4 pushes the adjustment push plate 7 to move up and squeeze the four guide bars 6, so that the distance between the four adjustment plates 5 and the four positioning plates 8 is increased. The four positioning plates 8 that are far away from each other are used to clamp the motor casing on the surface of the heating operating table 1 from the inside to ensure that the axis of the casing coincides with the axis of the electric telescopic rod 4, so that the distance between the casing and the heating coil 2 is kept the same at all places, so that the casing is heated evenly.

[0024] Both ends of the guide bar 6 are inclined at a forty-five degree angle toward the adjustment plate 5, the middle part of the guide bar 6 remains parallel to the adjustment plate 5, the outer surface of the adjustment push plate 7 is an inclined slope, and the inclination angle of the side of the adjustment push plate 7 is forty-five degrees. The adjustment push plate 7 is used to squeeze the inclined bottom of the guide bar 6, so that the guide bar 6 drives the adjustment plate 5 to move along the diameter direction of the adjustment push plate 7, thereby changing the spacing between the four adjustment plates 5.

[0025] A U-shaped groove is provided on the inner side of the positioning plate 8, and a positioning pulley 9 is rotatably installed on the inner side of the U-shaped groove. Part of the positioning pulley 9 protrudes from the positioning plate 8, and a return spring 10 is installed inside the adjustment plate 5. The top end of the return spring 10 is fixed to the bottom end of the positioning plate 8. The positioning plate 8 contacts the motor casing through the positioning pulley 9, and the motor casing is positioned and clamped from the inside without affecting the installation of the stator.

[0026] Working principle: First, place the casing to be heated inside the heating coil 2, then turn on the power of the device and start it. After the power is turned on, the electric telescopic rod 4 is energized to drive the adjustment push plate 7 to move up. The adjustment push plate 7 squeezes the guide bar 6, so that the four adjustment plates 5 drive the positioning plates 8 to move away from each other. The positioning pulleys 9 installed on the inside of the four positioning plates 8 of the device are fitted with the inner wall of the casing. At this time, the four positioning plates 8 are clamped and fixed to the casing from the inside through the positioning pulleys 9, and the axis of the casing coincides with the axis of the electric telescopic rod 4 and the center line of the heating coil 2, so that the casing is The shell and the heating coil 2 are kept at the same distance at all places, and then the internal power supply of the heating operating table 1 supplies power to the heating coil 2. After the heating coil 2 is energized, it heats the shell. After the shell is heated and expanded, the power supply connected to the heating coil 2 is turned off, and the stator is installed on the inside of the shell. When installing the stator, the positioning plate 8 is squeezed downward so that the positioning pulley 9 slides downward along the inner wall of the shell until the positioning plate 8 enters the inside of the adjustment plate 5. During the installation process, the shell and the heating coil 2 are kept at the same distance at all places, so that the shell is heated evenly at all places, thereby ensuring the matching accuracy between the shell and the stator after cooling.

[0027] It will be apparent 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 characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A motor stator mounted electric heating device, comprising a heating operating table (1) and a heating coil (2), characterized in that: An adjusting chamber (3) is provided on the inner side of the heating operating table (1), a cross slide (12) is provided above the adjusting chamber (3), four positioning plates (8) are slidably mounted on the inner side of the cross slide (12), an electric telescopic rod (4) is fixed on the inner side of the adjusting chamber (3), four adjusting plates (5) are provided around the electric telescopic rod (4), the adjusting plates (5) are distributed in a circular array around the axis of the electric telescopic rod (4), the adjusting plates (5) are slidably connected to the bottom surface of the adjusting chamber (3), the bottom end of the positioning plate (8) is slidably plugged into the inside of the adjusting plate (5), an adjusting push plate (7) is fixed on the top end of the electric telescopic rod (4), four guide strips (6) are provided around the adjusting push plate (7), the four guide strips (6) are respectively fixed to the four adjusting plates (5), and two elastic cross connecting belts (11) are fixed between the four guide strips (6).

2. The motor stator mounted electric heating device according to claim 1, characterized in that: A power supply is also installed inside the heating operating table (1), and the heating coil (2) is installed on the upper surface of the heating operating table (1).

3. The motor stator mounted electric heating device according to claim 2, characterized in that: The heating coil (2) is distributed in a spiral shape above the heating operating table (1), and both ends of the heating coil (2) are hung through the upper surface of the heating operating table (1) and extend into the interior of the heating operating table (1), and the two ends of the heating coil (2) are respectively connected to the positive and negative poles of the power supply.

4. The motor stator mounted electric heating device according to claim 1, characterized in that: Both ends of the guide bar (6) are inclined at a forty-five degree angle toward the adjustment plate (5), and the middle portion of the guide bar (6) remains parallel to the adjustment plate (5).

5. The motor stator mounted electric heating device according to claim 4, characterized in that: The outer surface of the adjusting push plate (7) is an inclined slope, and the inclination angle of the side of the adjusting push plate (7) is forty-five degrees.

6. The motor stator mounted electric heating device according to claim 1, characterized in that: A U-shaped groove is provided on the inner side of the positioning plate (8), and a positioning pulley (9) is rotatably mounted on the inner side of the U-shaped groove, with a portion of the positioning pulley (9) protruding from the positioning plate (8).

7. The motor stator mounted electric heating device according to claim 6, characterized in that: A return spring (10) is installed inside the adjustment plate (5), and the top end of the return spring (10) is fixed to the bottom end of the positioning plate (8).

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