Centrifugal casting motor rotor with exhaust structure and preparation method thereof

Abstract

The invention relates to the related technical field of motor rotors, in particular to a centrifugal casting motor rotor with an exhaust structure and a preparation method thereof, the centrifugal casting motor rotor comprises a motor, and a frequency conversion mechanism is arranged on the surface of one side of the motor; and a damping mechanism is arranged on the surface of one side of the motor. According to the centrifugal casting motor rotor with the exhaust structure and the preparation method of the centrifugal casting motor rotor, the fan is started when the motor rotor needs to be exhausted, air force generated by the fan exhausts air in the motor rotor through the exhaust holes and the exhaust grooves, and the air is prevented from accumulating in the motor rotor to form air holes; and the overall structural strength and stability of the motor rotor are ensured. Meanwhile, the fan can be protected through the protection shell, the fan is prevented from being interfered and damaged by the external environment, and the service life of the fan is prolonged. And the fan can be fixed through the arrangement of the fixing shell, the fan is prevented from shaking or falling off in the rotating process, and the stability and safety of the overall structure are improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to motor rotors, and in particular to a centrifugally cast motor rotor with an exhaust structure and a preparation method thereof. Background Art

[0002] There are two types of motor rotors: internal rotor and external rotor. In the internal rotor, the core in the center of the motor is the rotating body, outputting torque or receiving energy, and the motor rotor is often manufactured using centrifugal casting.

[0003] The motor rotors currently on the market have the following problems when in use: Traditional motor rotors often do not have good exhaust functions when used. Poor exhaust during the centrifugal casting process may cause the gas in the motor rotor metal liquid to be unable to be discharged smoothly, forming pores inside the motor rotor, affecting its overall structural strength and stability. Summary of the Invention

[0004] The object of the present invention is to provide a centrifugally cast motor rotor with an exhaust structure and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a centrifugally cast motor rotor with an exhaust structure and a preparation method thereof, comprising a motor rotor, a frequency conversion mechanism provided on one side surface of the motor rotor, a shock absorbing mechanism provided on one side surface of the motor rotor, and an exhaust mechanism provided on one side of the motor rotor; The exhaust mechanism includes a protective shell, a fan, a fixed shell, an exhaust hole and an exhaust groove. A protective shell is provided on one side of the motor rotor, a fan is provided inside the protective shell, a fixed shell is installed at one end of the protective shell, an exhaust hole is provided on the outside of the motor rotor, and an exhaust groove is provided at one end of the motor rotor.

[0006] Preferably, the frequency conversion mechanism includes a base, a wire box, a first mounting hole, a first bolt, a bottom shell, a fixing groove, a frequency converter, a second mounting hole, a second bolt, a hinge and a shell. The base is installed on one side surface of the motor rotor, and the wire box is fixedly connected to one side surface of the base. A first mounting hole is provided on one side surface of the wire box, and the first bolt is fixedly connected to the inner surface of the first mounting hole. The bottom shell is welded to one side surface of the wire box, a fixing groove is provided on one side surface of the bottom shell, and the frequency converter is fixedly connected to the inner surface of the fixing groove. A second mounting hole is provided on one side surface of the frequency converter, and the second bolt is fixedly connected to the inner surface of the second mounting hole. The hinge is fixedly connected to one side surface of the bottom shell, and the shell is fixedly connected to one side surface of the hinge.

[0007] Preferably, the outer wall size of the frequency converter matches the inner wall size of the fixing slot, and the outer wall size of the bottom shell matches the outer wall size of the outer shell.

[0008] Preferably, the hinges are installed symmetrically with respect to the central axis of the bottom shell, and the second mounting holes are opened symmetrically with respect to the central axis of the inverter.

[0009] Preferably, the first mounting hole is opened symmetrically with respect to the central axis of the wire box, and the outer wall size of the wire box is consistent with the outer wall size of the base.

[0010] Preferably, the shock absorbing mechanism includes a first mounting shell, a first limiting column, a spring, a second mounting shell, a third bolt and a limiting slot. One side surface of the motor rotor is fixedly connected to the first mounting shell, one side surface of the first mounting shell is fixedly connected to the first limiting column, the outer surface of the first limiting column is fixedly connected to the spring, one side surface of the spring is fixedly connected to the second mounting shell, one side surface of the first mounting shell is fixedly connected to the third bolt, and a limiting slot is provided on one side surface of the second mounting shell.

[0011] Preferably, one end surface of the spring is fixedly connected to a first mounting shell, and the other end surface of the spring is fixedly connected to a second mounting shell.

[0012] Preferably, the outer wall size of the first mounting shell matches the inner wall size of the second mounting shell, and the outer wall size of the first limiting column matches the inner wall size of the spring.

[0013] A method for preparing a centrifugally cast motor rotor with an exhaust structure is carried out according to the following steps: S1. First, the mold with the motor rotor to be prepared is installed in the mold cylinder of the centrifugal casting machine, and then the telescopic rod pushes the bottom cover upward to close the mold cylinder, and starts the drive of the centrifugal casting machine; S2. After the raw material is formed and solidified in the mold cylinder, the driver of the centrifugal casting machine stops rotating and retracts the telescopic rod. At the same time, the cylinder pushes the push plate downward to push the formed motor rotor out of the mold cylinder. Then, the cylinder pushes the formed motor rotor out of the bottom cover through the push plate. S4. The formed motor rotor is pushed out of the bottom cover and falls into a water tank filled with coolant for rapid cooling. When a certain number of motor rotors accumulate in the water tank, the relevant staff lifts the collection frame by the handle, and then drains the coolant on the motor rotor through the filter tank, and finally completes the preparation.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the centrifugally cast motor rotor with an exhaust structure and its preparation method, through the provision of a protective shell, a fan, a fixed shell, exhaust holes and exhaust slots, can start the fan when exhaust is required, and the wind force generated by the fan can discharge the gas inside the motor rotor through the exhaust holes and exhaust slots, thereby preventing the gas from accumulating inside the motor rotor to form pores, thereby ensuring the overall structural strength and stability of the motor rotor. At the same time, the provision of the protective shell can protect the fan, prevent the fan from being disturbed and damaged by the external environment, and extend the service life of the fan. The provision of the fixed shell can fix the fan, preventing the fan from shaking or falling off during rotation, thereby improving the stability and safety of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the matching structure of the bottom shell and the outer shell of the present invention; Figure 3 This is a schematic diagram of the frequency conversion mechanism structure of the present invention; Figure 4 Schematic diagram of the structure of the shock absorbing mechanism of the present invention; Figure 5 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 6 It is a schematic diagram of the exhaust mechanism structure of the present invention.

[0016] In the figure: 1. Motor rotor; 2. Frequency conversion mechanism; 21. Base; 22. Wire box; 23. First mounting hole; 24. First bolt; 25. Bottom shell; 26. Fixing slot; 27. Frequency converter; 28. Second mounting hole; 29. ​​Second bolt; 210. Hinge; 211. Housing; 3. Shock absorption mechanism; 31. First mounting shell; 32. Limiting column; 33. Spring; 34. Second mounting shell; 35. Third bolt; 36. Limiting slot; 4. Exhaust mechanism; 41. Protective shell; 42. Fan; 43. Fixing shell; 44. Exhaust hole; 45. Exhaust slot. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-4The present invention provides a technical solution: a centrifugally cast motor rotor with an exhaust structure and a preparation method thereof, comprising a motor rotor 1, a frequency conversion mechanism 2 being provided on one side surface of the motor rotor 1, a shock absorbing mechanism 3 being provided on one side surface of the motor rotor 1, and an exhaust mechanism 4 being provided on one side of the motor rotor 1; The exhaust mechanism 4 includes a protective shell 41, a fan 42, a fixed shell 43, an exhaust hole 44 and an exhaust groove 45. A protective shell 41 is provided on one side of the motor rotor 1, a fan 42 is provided inside the protective shell 41, a fixed shell 43 is installed at one end of the protective shell 41, an exhaust hole 44 is provided on the outside of the motor rotor 1, and an exhaust groove 45 is provided at one end of the motor rotor 1. Through the arrangement of the protective shell 41, the fan 42, the fixed shell 43, the exhaust hole 44 and the exhaust groove 45, when the motor rotor 1 rotates at high speed, the heat and gas generated can be effectively discharged through the exhaust hole 44 and the exhaust groove 45. At the same time, the rotation of the fan 42 can accelerate the flow of gas, further improve the exhaust efficiency, and ensure the stable operation of the motor rotor. In addition, the arrangement of the protective shell 41 and the fixed shell 43 can effectively protect the fan 42, prevent it from being disturbed and damaged by the external environment, and extend its service life.

[0019] Furthermore, the frequency conversion mechanism 2 includes a base 21, a wire box 22, a first mounting hole 23, a first bolt 24, a bottom shell 25, a fixing groove 26, a frequency converter 27, a second mounting hole 28, a second bolt 29, a hinge 21 and a housing 211. The base 21 is installed on one side surface of the motor 1, and the wire box 22 is fixedly connected to one side surface of the base 21. The first mounting hole 23 is opened on one side surface of the wire box 22, and the first bolt 24 is fixedly connected to the inner surface of the first mounting hole 23. The bottom shell 25 is welded to one side surface of the wire box 22, and a fixing groove 26 is opened on one side surface of the bottom shell 25. The frequency converter 27 is fixedly connected to the inner surface of the fixing groove 26. The frequency converter 27 is opened on one side surface of the frequency converter 27. The second mounting hole 28 is opened on one side surface of the frequency converter 27, and the second bolt 28 is fixedly connected to the inner surface of the second mounting hole 28. 29. A hinge 21 is fixedly connected to one side surface of the bottom shell 25, and a shell 211 is fixedly connected to one side surface of the hinge 21. Through the arrangement of the base 21, the wire box 22, the first mounting hole 23, the first bolt 24, the bottom shell 25, the fixing groove 26, the inverter 27, the second mounting hole 28, the second bolt 29, the hinge 21 and the shell 211, when in use, the wire box 22 is fixed to one side of the base 21 through the first bolt 24, and then the inverter 27 is placed in the fixing groove 26 opened on one side surface of the bottom shell 25, and then the shell 211 is installed to one side surface of the bottom shell 25 through the hinge 21. When it is necessary to adjust the speed of the motor 1 during operation, the shell 211 is flipped up, and the working power frequency of the motor 1 is controlled by operating the inverter 27 to achieve the effect of controlling the motor speed.

[0020] Furthermore, the outer wall size of the inverter 27 matches the inner wall size of the fixing groove 26, and the outer wall size of the bottom shell 25 matches the outer wall size of the outer shell 211. Through the setting of the outer shell 211, when in use, the outer shell 211 can protect the inverter 27 well, so that it will not be damaged, and also reduce the impact of factors such as dust falling on the inverter 27.

[0021] Furthermore, the hinge 21 is installed symmetrically with respect to the central axis of the bottom shell 25, and the second mounting hole 28 is opened symmetrically with respect to the central axis of the inverter 27. Through the setting of the hinge 21, when in use, the outer shell 211 rotates open with the hinge 21 as the center, thereby improving convenience.

[0022] Furthermore, the first mounting hole 23 is opened symmetrically with respect to the central axis of the wire box 22, and the outer wall size of the wire box 22 is consistent with the outer wall size of the base 21. When in use, the base 21 provides the necessary space for the installation of the wire box 22, while also improving the stability of the wire box 22.

[0023] Furthermore, the shock absorbing mechanism 3 includes a first mounting shell 31, a first limiting column 32, a spring 33, a second mounting shell 34, a third bolt 35 and a limiting groove 36. One side surface of the motor 1 is fixedly connected to the first mounting shell 31, one side surface of the first mounting shell 31 is fixedly connected to the first limiting column 32, the outer surface of the first limiting column 32 is fixedly connected to the spring 33, one side surface of the spring 33 is fixedly connected to the second mounting shell 34, one side surface of the first mounting shell 31 is fixedly connected to the third bolt 35, and one side surface of the second mounting shell 34 is provided with a The limiting groove 36 is arranged through the first mounting shell 31, the limiting column 32, the spring 33, the second mounting shell 34, the third bolt 35 and the limiting groove 36. When in use, the first mounting shell 31 is installed to one side of the motor 1 by bolts, and then the second mounting shell 34 is installed to the required position of the motor 1 by bolts. The third bolt 35 passes through the limiting groove 36 to fix the second mounting shell 34 to the outside of the first mounting shell 31. When the motor 1 starts to operate, the vibration generated will be absorbed by the spring 33, and the third bolt 35 simplifies the installation of the motor 1.

[0024] Furthermore, one end surface of the spring 33 is fixedly connected to the first mounting shell 31, and the other end surface of the spring 33 is fixedly connected to the second mounting shell 34. Through the setting of the spring 33, when in use, the spring 33 can absorb the vibration generated by the motor 1, thereby reducing the possibility of the bolts fixing the motor 1 loosening due to the vibration caused by the long-term operation of the motor 1.

[0025] Furthermore, the outer wall size of the first mounting shell 31 matches the inner wall size of the second mounting shell 34, and the outer wall size of the first limiting column 32 matches the inner wall size of the spring 33. Through the setting of the limiting column 32, when in use, the limiting column 32 limits the activity space of the spring 33, thereby improving stability.

[0026] A method for preparing a centrifugally cast motor rotor with an exhaust structure is carried out according to the following steps: S1. First, install the mold with the motor rotor to be prepared in the mold cylinder of the centrifugal casting machine, then push the bottom cover upward with the telescopic rod to close the mold cylinder, and start the drive of the centrifugal casting machine; S2. After the raw material is formed and solidified in the mold cylinder, the driver of the centrifugal casting machine stops rotating and retracts the telescopic rod. At the same time, the cylinder pushes the push plate downward to push the formed motor rotor out of the mold cylinder. Then, the cylinder pushes the formed motor rotor out of the bottom cover through the push plate. S4. The formed motor rotor is pushed out of the bottom cover and falls into a water tank filled with coolant for rapid cooling. When a certain number of motor rotors accumulate in the water tank, the relevant staff lifts the collection frame by the handle, and then drains the coolant on the motor rotor through the filter tank, and finally completes the preparation.

[0027] Working principle: When the motor rotor 1 rotates at high speed, the heat and gas generated can be effectively discharged through the exhaust holes 44 and the exhaust slots 45. At the same time, the rotation of the fan 42 can accelerate the flow of gas, further improve the exhaust efficiency, and ensure the stable operation of the motor rotor. In addition, the setting of the protective shell 41 and the fixed shell 43 can effectively protect the fan 42, prevent it from being disturbed and damaged by the external environment, and extend its service life. When in use, the wire box 22 is fixed to one side of the base 21 by the first bolt 24, and then the inverter 27 is placed in the fixing groove 26 opened on the one side surface of the bottom shell 25, and then the shell 211 is installed to the one side surface of the bottom shell 25 through the hinge 21. When it is necessary to adjust the speed of the motor 1, flip up the shell 211, and operate the inverter 27 to complete the control of the working power frequency of the motor 1 to achieve the effect of controlling the motor speed. Through the setting of the shell 211, when in use, the shell 211 can well protect the inverter 27, so that it will not be damaged while also reducing factors such as dust falling. The influence of factors on the inverter 27 is achieved through the setting of the hinge 21. When in use, the shell 211 is rotated open with the hinge 21 as the center, which improves convenience. When in use, the base 21 provides the necessary space for the installation of the wire box 22, and also improves the stability of the wire box 22. When in use, the first mounting shell 31 is installed to one side of the motor 1 by bolts, and then the second mounting shell 34 is installed to the required position of the motor 1 by bolts. The third bolt 35 passes through the limiting groove 36 to fix the second mounting shell 34 to the outside of the first mounting shell 31. When the motor 1 starts to operate, the vibration generated will be absorbed by the spring 33, and the third bolt 35 simplifies the installation of the motor 1. Through the setting of the spring 33, when in use, the spring 33 can absorb the vibration generated by the motor 1, reducing the possibility of the bolts fixing the motor 1 loosening due to the vibration caused by the long-term operation of the motor 1. When in use, the limiting column 32 limits the activity space of the spring 33, thereby improving stability. The model of the inverter 27 is ACS51.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugally cast motor rotor with an exhaust structure, comprising a motor rotor (1), characterized in that: A frequency conversion mechanism (2) is provided on one side surface of the motor rotor (1), a vibration damping mechanism (3) is provided on one side surface of the motor rotor (1), and an exhaust mechanism (4) is provided on one side of the motor rotor (1); The exhaust mechanism (4) comprises a protective shell (41), a fan (42), a fixed shell (43), an exhaust hole (44) and an exhaust slot (45); the protective shell (41) is provided on one side of the motor rotor (1); the fan (42) is provided inside the protective shell (41); the fixed shell (43) is installed at one end of the protective shell (41); the exhaust hole (44) is provided on the outside of the motor rotor (1); and the exhaust slot (45) is provided at one end of the motor rotor (1).

2. The centrifugally cast motor rotor with an exhaust structure according to claim 1, characterized in that: The frequency conversion mechanism (2) comprises a base (21), a wire box (22), a first mounting hole (23), a first bolt (24), a bottom shell (25), a fixing slot (26), a frequency converter (27), a second mounting hole (28), a second bolt (29), a hinge (210) and a shell (211), wherein a side surface of the motor rotor (1) is mounted with the base (21), a side surface of the base (21) is fixedly connected to the wire box (22), a side surface of the wire box (22) is provided with a first mounting hole (23), an inner side surface of the first mounting hole (23) is fixedly connected to the inner side surface of the first mounting hole (23). A first bolt (24) is fixedly connected to the wire box (22); a bottom shell (25) is welded to one side surface of the wire box (22); a fixing groove (26) is provided on one side surface of the bottom shell (25); an inverter (27) is fixedly connected to the inner side surface of the fixing groove (26); a second mounting hole (28) is provided on one side surface of the inverter (27); a second bolt (29) is fixedly connected to the inner side surface of the second mounting hole (28); a hinge (210) is fixedly connected to one side surface of the bottom shell (25); and a housing (211) is fixedly connected to one side surface of the hinge (210).

3. The centrifugally cast motor rotor with an exhaust structure according to claim 2, characterized in that: The outer wall size of the frequency converter (27) matches the inner wall size of the fixing groove (26), and the outer wall size of the bottom shell (25) matches the outer wall size of the outer shell (211).

4. The centrifugally cast motor rotor with an exhaust structure according to claim 2, characterized in that: The hinge (210) is symmetrically mounted with respect to the central axis of the bottom shell (25), and the second mounting hole (28) is symmetrically opened with respect to the central axis of the frequency converter (27).

5. The centrifugally cast motor rotor with an exhaust structure according to claim 2, characterized in that: The first mounting hole (23) is opened symmetrically with respect to the central axis of the wire-releasing box (22), and the outer wall size of the wire-releasing box (22) matches the outer wall size of the base (21).

6. The centrifugally cast motor rotor with an exhaust structure according to claim 1, characterized in that: The shock absorbing mechanism (3) comprises a first mounting shell (31), a first limiting column (32), a spring (33), a second mounting shell (34), a third bolt (35) and a limiting slot (36); one side surface of the motor rotor (1) is fixedly connected to the first mounting shell (31); one side surface of the first mounting shell (31) is fixedly connected to the first limiting column (32); the outer surface of the first limiting column (32) is fixedly connected to the spring (33); one side surface of the spring (33) is fixedly connected to the second mounting shell (34); one side surface of the first mounting shell (31) is fixedly connected to the third bolt (35); and one side surface of the second mounting shell (34) is provided with a limiting slot (36).

7. The centrifugally cast motor rotor with an exhaust structure according to claim 6, characterized in that: One end surface of the spring (33) is fixedly connected to a first mounting shell (31), and the other end surface of the spring (33) is fixedly connected to a second mounting shell (34).

8. The centrifugally cast motor rotor with an exhaust structure according to claim 6, characterized in that: The outer wall size of the first mounting shell (31) matches the inner wall size of the second mounting shell (34), and the outer wall size of the first limiting column (32) matches the inner wall size of the spring (33).

9. A method for preparing a centrifugally cast motor rotor with an exhaust structure, the centrifugally cast motor rotor with an exhaust structure according to claim 1-8, characterized in that: Follow these steps: S1. First, the mold with the motor rotor to be prepared is installed in the mold cylinder of the centrifugal casting machine, and then the telescopic rod pushes the bottom cover upward to close the mold cylinder, and starts the drive of the centrifugal casting machine; S2. After the raw material is formed and solidified in the mold cylinder, the driver of the centrifugal casting machine stops rotating and retracts the telescopic rod. At the same time, the cylinder pushes the push plate downward to push the formed motor rotor out of the mold cylinder. Then, the cylinder pushes the formed motor rotor out of the bottom cover through the push plate. S3. The formed motor rotor is pushed out of the bottom cover and falls into a water tank filled with coolant for rapid cooling. When a certain number of motor rotors accumulate in the water tank, the relevant staff lifts the collection frame by the handle, and then drains the coolant on the motor rotor through the filter tank, and finally completes the preparation.

Images