Motor

Abstract

The invention relates to the field of motors, in particular to a motor. Comprising a shaft, a rotor is fixedly connected to the shaft, a machine shell is sleeved outside the rotor, a stator is fixedly connected in the machine shell, a liquid pipeline is arranged in a machine shell body, a water tank is fixedly connected to the rear end of the machine shell, a water tank cover is fixedly connected to the rear end of the water tank, and a machine cover is fixedly connected to the front end of the machine shell. A fixed adjusting support is arranged outside the machine shell. The motor absorbs heat by liquid and concentrates the heat to the rear to be discharged, the influence on equipment is reduced, and meanwhile the support can meet the installation requirement of the motor under specific conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric machines, and more particularly to an electric machine. BACKGROUND

[0002] With the development of the demand for intensive society, the state's requirements for energy saving and consumption reduction are becoming higher and higher. For the electric machine industry, effectively improving the heat dissipation structure of the electric machine can realize the reduction of the working environment temperature of the electric machine, thereby effectively reducing the power consumption of the electric machine, the loss of the electric machine and the controller, and improving the utilization efficiency of electric energy. In order to solve the above problems, an electric machine disclosed in publication No. CN203251543U is provided with heat dissipation fins on the outside of the controller shell, and the controller is directly installed on the electric machine shell body. Although the heat dissipation fins can enhance the heat dissipation efficiency of the controller shell, when the electric machine is applied in a machine, the heat dissipated around will cause the operating environment temperature of the machine to be too high, at which time the heat dissipation effect of the heat dissipation fins is reduced, affecting the operation of the machine. SUMMARY

[0003] The present application provides an electric machine, which can control the heat dissipation direction of the electric machine and facilitate heat dissipation to the outside.

[0004] The above object is achieved by the following technical solutions.

[0005] An electric machine comprises a shaft, a rotor fixed to the shaft, a shell covering the rotor, a stator fixed in the shell, a liquid pipeline arranged in the shell, a water tank fixed to the rear end of the shell, a water tank cover fixed to the rear end of the water tank, and a machine cover fixed to the front end of the shell.

[0006] The machine cover is further provided with a bearing I fixed to the center of the machine cover, and the bearing I is sleeved on the shaft and connected through a clamping groove.

[0007] The water tank is further provided with a bearing II fixed to the front end of the water tank, and the bearing II is sleeved on the shaft and connected through a clamping groove.

[0008] The shell is further provided with a pipeline fixed to the upper end of the shell, the inner wall of the pipeline is communicated with the liquid pipeline, and the other end of the pipeline is fixedly connected with the water tank and communicated with the water tank.

[0009] The shaft is further provided with a commutator fixed to the shaft, and the commutator is located at the front end of the rotor.

[0010] The shell is further provided with a brush fixed to the inside of the shell, and the brush is in contact with the surface of the commutator.

[0011] The water tank is further provided with a water pump fixed to the inside of the water tank, and the water outlet of the water pump is communicated with the liquid pipeline. The water tank cover is further provided with a heat dissipation fin fixed to the outside of the water tank cover, and the inside of the water tank and the inside of the water tank cover are fixedly connected with a baffle.

[0012] The base is further provided with a threaded rod rotatably connected to the base, and the base is provided with a fixing hole.

[0013] It also includes clamp I, which is located at the upper and lower ends of the machine housing. The two ends of clamp I are rotatably connected to a rotating shaft, and a rotating block is fixed on the rotating shaft. The rotating block is threadedly connected to the threaded rod.

[0014] It also includes clamp II, which is located at the lower end of the housing. Clamp II is locked to clamp I with screws. It also includes a telescopic rod, the telescopic end of which is rotatably connected to clamp II, and the fixed end of which is rotatably connected to the base.

[0015] The beneficial effects of the motor of the present invention are as follows:

[0016] A water tank is located at the rear of the motor, and liquid pipelines are installed inside the casing. The motor heats up mainly due to the resistance heat generated when current passes through the motor coil. Conventional motors rely on external heat dissipation fins for heat dissipation. This invention uses liquid to concentrate the heat of the motor casing at the rear for dissipation. When the motor is used in a confined space or inside a machine, the machine will not malfunction due to excessive heat from the motor casing. The motor is also equipped with a bracket to facilitate tilting the motor for installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an electric motor;

[0018] Figure 2 This is a schematic diagram of the shaft structure;

[0019] Figure 3 This is a schematic diagram of the engine cover.

[0020] Figure 4 This is a schematic diagram of the internal structure of the casing;

[0021] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the casing;

[0022] Figure 6 A schematic diagram of the shaft and water tank;

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the motor;

[0024] Figure 8 This is a schematic diagram of the motor mounting bracket.

[0025] In the diagram: Shaft 11; Machine cover 12; Machine housing 13; Water tank 14; Water tank cover 15; Base 16; Commutator 101; Rotor 102; Bearing I 201; Brush 301; Liquid pipeline 302; Stator 303; Pipeline 304; Water pump 401; Bearing II 402; Heat sink 501; Baffle 502; Threaded rod 601; Rotating block 602; Rotating shaft 603; Clamp I 604; Screw 605; Clamp II 606; Telescopic rod 607. Detailed Implementation

[0026] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] like Figure 2 As shown, an electric motor includes a shaft 11, a rotor 102 fixedly connected to the middle of the shaft 11, a wire wound around the rotor 102 along the axial direction, a commutator 101 fixedly connected to the shaft 11, the commutator 101 being located at the front end of the rotor 102, the commutator 101 being two arc-shaped metal plates, the wire being wound around the rotor 102 and then fixed at both ends to the two commutator plates respectively, and keyways are provided at both ends of the shaft 11.

[0029] like Figure 3 As shown, the motor also includes a cover 12, a bearing I 201 is fixedly connected to the inner side of the cover 12, the outer ring of the bearing I 201 is fixedly connected to the cover 12, the inner ring of the bearing I 201 is provided with a positioning key, which is keyed to the keyway at the front end of the shaft 11, the cover 12 is provided with a hole in the center, the diameter of the hole is equal to the diameter of the inner ring of the bearing I 201, and the cover 12 is provided with a fixing hole.

[0030] like Figure 4 and Figure 5 As shown, a housing 13 surrounds the shaft 11. A brush 301 is fixedly attached to the front side of the inner wall of the housing 13. The brush 301 is an elastic metal plate. The elastic force keeps one side of the brush 301 in contact with the commutator 101 fixedly attached to the shaft 11. A stator 303 is also fixedly attached to the inner side of the housing 13. The stator 303 is a permanent magnet. The length of the stator 303 is equal to the length of the rotor 102. A liquid pipeline 302 is provided inside the housing 13. The liquid pipeline 302 is spirally arranged around the housing 13. A pipe 304 is fixedly attached to the upper end of the housing 13. The pipe 304 is a heat-insulated liquid pipeline and one end is connected to the liquid pipeline 302. A fixing hole is provided at the front end of the housing 13. The front end of the housing 13 is connected to the cover 12 by bolts through the fixing hole.

[0031] like Figure 6 and Figure 7As shown, a water tank 14 is fixedly connected to the rear end of the housing 13. A bearing II 402 is fixedly connected to the front side of the water tank 14. The outer ring of the bearing II 402 is fixedly connected to the center of the outer wall of the front side of the water tank 14. The inner ring of the bearing II 402 is provided with a positioning key, which is keyed to the keyway at the rear end of the shaft 11. A water pump 401 is also fixedly connected inside the water tank 14. The water inlet of the water pump 401 is located inside the water tank 14. The water outlet of the water pump 401 is connected to the liquid pipeline 302 through the lower end of the water tank 14. The pipeline 304 is fixedly connected to the upper end of the water tank 14 and communicates with the inside of the water tank 14. The water tank 14 is also provided with holes around its perimeter. It also includes a water tank cover 15. The water tank cover 15 is provided with holes and is fixedly fastened with bolts through the holes on the water tank 14. A heat sink 501 is fixedly connected to the outer side of the water tank cover 15, and a baffle 502 is fixedly connected to the inner side of the water tank cover 15.

[0032] The positive and negative terminals of the external DC power are connected to two brushes 301 respectively. The current flows through the brushes 301 and the commutator 101 and through the wires wound on the rotor 102 to generate a radial magnetic field. Multiple stators 303 fixed on the housing 13 have alternating N and S poles. The magnetic field generated by the wires and the stators 303 repel each other, causing the shaft 11 to rotate. The positive brushes 301 and the two commutators 101 alternately contact each other to change the internal current, thereby changing the magnetic field and causing the shaft 11 to rotate continuously.

[0033] The motor generates a lot of heat during operation, mainly from the resistance heat generated by the current flowing through the conductor and the friction heat generated by the rotation of the shaft 11. The heat is concentrated inside the motor. This invention utilizes liquid heat dissipation. Coolant is injected into the water tank 14 and flows from the lower end through the liquid pipe 302 to absorb the heat inside the motor. Then it flows back to the water tank 14 from the upper end. The baffle 502 in the water tank 14 is used to increase the residence time of the coolant in the water tank to ensure the heat dissipation effect. The front baffle 502 is made of thermal insulation material to prevent heat from being transferred from the water tank 14 back to the inside of the housing 13.

[0034] Preferably, the material of the housing 13 is changed to increase the directional heat dissipation effect of the motor. For example, the housing 13 can be made of two materials spliced ​​together, with the inner side being a good thermal conductive material and the outer side being a thermally insulating material, to prevent heat from spreading outward and changing the internal working environment temperature of the equipment.

[0035] More preferably, the motor will generate noise during operation. The noise can be reduced by wrapping the outer side of the housing 13 with sound insulation material. The heat dissipation structure of this device is located behind the motor, and the sound insulation material on the outside will not affect the heat dissipation effect like a traditional motor.

[0036] like Figure 8An electric motor also includes a base 16, which has four fixing holes. Four threaded rods 601 are rotatably connected to the base 16. Two rotating blocks 602 are threadedly connected to each threaded rod 601. A rotating shaft 603 is fixed to each of the left and right sides of the rotating block 602. The motor also includes a clamp I 604, which has notches at both ends. The rotating shafts 603 are rotatably connected to the notches.

[0037] The lower clamp I 604 is also provided with a through hole that runs from front to back, and also includes clamp II 606, which is located in front of the lower clamp I 604 and is locked with screws 605 through the through hole on clamp I 604. It also includes a telescopic rod 607, which is provided with a fixing structure. The movable end of the telescopic rod 607 is rotatably connected to the front end of clamp II 606, and the fixed end of the telescopic rod 607 is rotatably connected to the base 16.

[0038] To address the output shaft angle issue during click installation, clamp I 604 is used to adjust the motor's tilt during installation, while clamp II 606 is used for fixation. When the motor needs to be installed at an upward tilt, the two front threaded rods 601 are rotated clockwise. The rotation of the threaded rods 601 causes the rotating block 602 to move upward, and the front clamp I 604 rises along with the rotating block 602, causing the front end of the motor to gradually rise.

[0039] As the motor tilts, the lengths of clamps I 601 on both the front and rear sides change. At this time, rotating screw 605 causes clamps II 606 on both the front and rear sides to clamp the motor. The rotating shaft 603 ensures that clamps I 604 on both the upper and lower sides remain horizontal to the motor when the motor tilts. The tilting of the lower clamp I 604 causes the front clamp II 606 to rise and the rear clamp II 606 to fall. The front telescopic rod 607 extends in coordination, and the rear telescopic rod 607 shortens in coordination. Then, the length of the telescopic rod 607 is fixed by the fixing mechanism of the telescopic rod 607.

[0040] This device can also meet the installation requirements of motors at different heights. When the four threaded rods 601 are rotated at the same time, the rotating block 602 moves upward due to the threaded transmission, and the clamps I 604 on both the upper and lower sides move upward along with the rotating block 602. At this time, the telescopic rods 607 on both the front and rear sides extend. When they reach the predetermined position, they are locked by the fixing structure set on the telescopic rods 607, thereby achieving the purpose of raising the motor.

[0041] Preferably, a level can be fixed to the upper end of the motor for leveling. For example, to meet the installation conditions of the motor under the inclined surface, a level can be fixed to the upper end of the housing 13. If the motor shaft 11 is tilted during installation, it will affect the coaxiality and damage the machine parts. During installation, the level is fixed on the housing 13 to achieve leveling. The motor is leveled by rotating the four threaded rods 601.

Claims

1. An electric motor, comprising a shaft (11), characterized in that: A rotor (102) is fixedly connected to the shaft (11). The rotor (102) is covered by a housing (13). A stator (303) is fixedly connected inside the housing (13). A liquid pipeline (302) is provided inside the housing (13). A water tank (14) is fixedly connected to the rear end of the housing (103). A water tank cover (15) is fixedly connected to the rear end of the water tank (14). A cover (12) is fixedly connected to the front end of the housing (103).

2. The motor according to claim 1, characterized in that: It also includes a bearing I (201) fixed to the center of the cover (12), which is sleeved on the shaft (11) and connected by a slot.

3. The motor according to claim 1, characterized in that: It also includes a bearing II (402) fixed to the front end of the water tank (14), which is sleeved on the shaft (11) and connected by a slot.

4. The motor according to claim 1, characterized in that: It also includes a pipe (304) fixed to the upper end of the casing (13), the inner wall of the pipe (304) is connected to the liquid pipeline (302), and the other end of the pipe (304) is fixed to and connected to the water tank (14).

5. The motor according to claim 1, characterized in that: It also includes a commutator (101) fixed to the shaft (11), the commutator (101) being located at the front end of the rotor (102).

6. The motor according to claim 5, characterized in that: It also includes a brush (301) fixed inside the housing (13), the brush (301) being in contact with the surface of the commutator (101).

7. The motor according to claim 1, characterized in that: It also includes a water pump (401) fixed inside the water tank (14), the outlet of the water pump (401) is connected to the liquid pipeline (302), and a heat sink (501) fixed outside the water tank cover (15). A baffle (502) is fixed inside the water tank (14) and inside the water tank cover (15).

8. The motor according to claim 1, characterized in that: It also includes a base (16), on which a threaded rod (601) is rotatably connected, and a fixing hole is provided on the base (16).

9. The motor according to claim 8, characterized in that: It also includes clamp I (604), which is located at the upper and lower ends of the housing (13). The two ends of clamp I (604) are rotatably connected to a rotating shaft (603), and a rotating block (602) is fixed on the rotating shaft (603). The rotating block (602) is threadedly connected to the threaded rod (601).

10. The motor according to claim 9, characterized in that: It also includes clamp II (606), which is located at the lower end of the housing (13). Clamp II (606) is locked to clamp I (604) with screws (605). It also includes a telescopic rod (607), the telescopic end of which is rotatably connected to clamp II (606), and the fixed end of which is rotatably connected to the base (16).

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