Cooling oil pump motor

Abstract

The utility model belongs to the field of oil pump motors, in particular to a cooling oil pump motor, which is characterized in that the inner wall of a casing is fixedly connected with a motor stator assembly, the opening end of the casing is fixedly connected with one side of an oil pump mounting plate, the other side of the oil pump mounting plate is fixedly connected with a pump seat, and the casing of the pump seat is nested in the casing of the casing; a pump cover is fixedly arranged at the front end of a pump base to form a closed space, holes formed in the center of the pump cover and the center of the bottom of the pump base are used for being fixedly connected with a motor spindle, a motor shaft sleeve assembly is rotatably arranged on a shaft body of the motor spindle, and a motor rotor is fixedly arranged on a shaft body of the motor shaft sleeve assembly. The output end of the motor shaft sleeve is connected with the impeller and provides power, oil liquid cannot enter the space where the motor stator assembly is located through the structure, it is guaranteed that the performance of the motor is not affected by the oil liquid, the oil liquid cannot be ignited even if sparks occur, gaps, except parts in the space, in the closed space are filled with the oil liquid during working, and the service life of the motor is prolonged. And potential safety hazards caused by sparks are avoided.

Description

Technical Field

[0001] This utility model relates to the field of oil pump motors, specifically a cooling oil pump motor. Background Technology

[0002] The output shaft of the permanent magnet brushless motor is connected to the input shaft of the oil pump through a coupling. The function of the coupling is to accurately transmit the rotational motion of the motor to the oil pump, and at the same time compensate for any slight axial misalignment that may exist between the two shafts. The torque generated when the motor is running is transmitted to the coupling through the output shaft, and the coupling then transmits the torque to the input shaft of the oil pump, thereby driving the rotor or gears of the oil pump to rotate and complete the transmission of oil.

[0003] Existing motors drive oil pump impellers using couplings, which can sometimes generate sparks and pose safety hazards during operation. Therefore, a cooling oil pump motor is proposed to address these issues. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model proposes a cooling oil pump motor.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a cooling oil pump motor, including a housing, a motor stator assembly fixedly connected to the inner wall of the housing, an open end of the housing fixedly connected to one side of an oil pump mounting plate, a pump base fixedly connected to the other side of the oil pump mounting plate, a housing of the pump base nested inside the housing of the housing, a pump cover fixedly provided at the front end of the pump base to form a sealed space, holes opened at the center of the pump cover and the center of the bottom of the pump base for fixedly connecting the motor main shaft, a motor bushing rotatably provided on the shaft of the motor main shaft, a motor rotor fixedly provided on the shaft of the motor bushing, and the output end of the motor bushing connected to an impeller and providing power;

[0006] Preferably, the housing includes an inner shell, and the inner shell is fixedly disposed at the end of the inner wall of the housing, and the motor stator assembly is disposed between the housing and the inner shell;

[0007] Preferably, a deep groove ball bearing and a sliding bearing are provided between the shaft body of the motor spindle and the motor bushing to support the rotation of the motor bushing;

[0008] Preferably, the pump base further includes an oil outlet, and the housing of the pump base has an oil outlet for supplying oil to external devices;

[0009] Preferably, the pump cover also includes an oil inlet, and the pump cover housing has an oil inlet in the middle for hydraulic oil to enter.

[0010] The advantages of this utility model are:

[0011] 1. This utility model forms a sealed space by tightly connecting the pump cover and the pump base. The insertion and connection between the pump base and the housing prevents oil from entering the space where the motor stator assembly is located, ensuring that the motor performance is not affected by the oil. Even if sparks occur, the oil will not be ignited. During operation, the gaps in the sealed space, except for the parts inside the space, are filled with oil. This prevents the motor rotor from generating sparks during the operation of the impeller supplying oil to external devices when the motor shaft sleeve rotates, thus avoiding safety hazards caused by sparks. The oil filling the sealed space can also effectively lubricate the deep groove ball bearings supporting the motor shaft sleeve and the motor main shaft, keeping the deep groove ball bearings in optimal condition at all times.

[0012] 2. This utility model controls the rotation of the motor rotor through a controller, which drives the impeller to rotate. The pump base draws oil through the oil inlet of the pump cover and pumps out high-pressure oil through the oil outlet. The characteristic of this oil pump motor is that the impeller and the motor rotor are directly fixed on a motor shaft sleeve and rotate together. The pump cover and the pump base form the space for the impeller to rotate. There is neither a separate oil pump nor a separate motor. The two are organically integrated, which saves space and simplifies the structure and parts, reduces the size, reduces the problem of limited use environment due to size issues, and reduces production costs. Through the design of the oil pump mounting plate, the oil pump can be stably connected to external devices. 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0017] In the picture:

[0018] 1. Casing; 10. Inner shell; 11. Motor stator assembly; 12. Motor rotor; 3. Motor spindle; 4. Motor bushing; 41. Deep groove ball bearing; 42. Sliding bearing; 5. Oil pump mounting plate; 6. Pump base; 61. Oil outlet; 7. Pump cover; 71. Oil inlet; 8. Impeller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0021] This application discloses a cooling oil pump motor, including a housing 1. A motor stator assembly 11 is fixedly connected to the inner wall of the housing 1. The open end of the housing 1 is fixedly connected to one side of an oil pump mounting plate 5. A pump base 6 is fixedly connected to the other side of the oil pump mounting plate 5. The housing of the pump base 6 is nested inside the housing of the housing 1. A pump cover 7 is fixedly provided at the front end of the pump base 6 to form a sealed space. Holes opened at the center of the pump cover 7 and the center of the bottom of the pump base 6 are used to fixably connect the motor main shaft 3. A motor bushing 4 is rotatably provided on the shaft of the motor main shaft 3. A motor rotor 12 is fixedly provided on the shaft of the motor bushing 4. The output end of the motor bushing 4 is connected to an impeller 8 and provides power.

[0022] The housing 1 includes an inner shell 10, and the inner shell 10 is fixedly disposed at the end of the inner wall of the housing 1. The motor stator assembly 11 is disposed between the housing 1 and the inner shell 10.

[0023] A deep groove ball bearing 41 and a sliding bearing 42 are provided between the shaft of the motor spindle 3 and the motor bushing 4 to support the rotation of the motor bushing 4.

[0024] The pump base 6 also includes an oil outlet 61, and the housing of the pump base 6 has an oil outlet 61 for supplying oil to external devices.

[0025] The pump cover 7 also includes an oil inlet 71, and the pump cover 7 housing has an oil inlet 71 in the middle for hydraulic oil to enter.

[0026] Working principle: When supplying oil to the external device through the oil outlet 61, because the impeller 8 and the motor rotor 12 are fixed on the motor shaft sleeve 4 and rotate together, when the controller drives the motor rotor 12 to rotate, the motor rotor 12 drives the motor shaft sleeve 4 to drive the impeller 8 to rotate. The rotation of the impeller 8 in the sealed space formed by the pump cover 7 and the pump base 6 generates negative pressure, so that the hydraulic oil entering through the oil inlet 71 connected to the external oil supply device is stored in the housing of the pump base 6. As the impeller 8 rotates, the negative pressure generated causes the oil to be continuously drawn into the housing of the pump base 6. At this time, the blades of the impeller 8 will drive the oil around the housing of the pump base 6 to rotate and generate a vortex. Under the action of the centrifugal force generated by the blades of the impeller 8 driving the oil to rotate, a positive pressure will be formed at the outer edge of the blades of the impeller 8, squeezing the oil towards the oil outlet 61 opened in the pump base 6. The oil outlet 61 is connected to the oil cylinder of the external device through a hose. The oil flows into the oil cylinder of the external device through the oil outlet 61, thereby realizing the oil supply to the external device.

[0027] As the impeller 8 rotates rapidly, a negative pressure will be formed in the center of the impeller 8. The negative pressure generated by the impeller 8 will continuously draw the oil from the external oil supply device into the housing of the pump base 6 through the oil inlet 71 opened in the pump cover 7. At the same time, a positive pressure will be formed on the outer edge of the blades of the impeller 8, pushing the oil towards the oil outlet 6. The oil flows through the oil outlet 61 into the oil cylinder of the external device.

[0028] The sealed space formed by the pump cover 7 and the pump base 6 provides space for the impeller 8 to generate vortices during rotation. The housing of the pump base 6 is nested within the housing of the casing 1, ensuring that oil seeping from the pump base 6 only enters the inner casing 10 and does not enter the space where the motor stator assembly 11 is located. This guarantees that the motor's performance is not affected by the oil, and even if sparks occur, the oil will not ignite. During operation, the sealed space, except for the parts within it, is filled with oil. This prevents the motor rotor 12 from generating sparks during the impeller 8's oil supply to external devices while driving the motor shaft sleeve 4 to rotate, thus avoiding safety hazards caused by sparks. The oil filling the sealed space also simultaneously supports the deep groove ball bearing 41 and the sliding bearing 42 used for supporting the motor shaft sleeve 4 and the motor main shaft 3. Effective lubrication ensures that the deep groove ball bearing 41 and the sliding bearing 42 are always in optimal condition. The motor rotor 12 is rotated by the controller, which drives the impeller 8 to rotate. The pump base 6 draws in oil through the oil inlet 71 of the pump cover 7 and pumps out high-pressure oil through the oil outlet 61. The characteristic of this oil pump motor is that the impeller 8 and the motor rotor 12 are directly fixed on a motor shaft sleeve 4 and rotate together. There is space for the impeller 8 to rotate between the pump cover 7 and the pump base 6. There is neither a separate oil pump nor a separate motor. The two are organically integrated, which saves space and simplifies the structure and parts. It can reduce the size and reduce the problem of limited use environment caused by size issues, and reduce production costs. The design of the oil pump mounting plate enables the oil pump to be stably connected to external devices.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A cooled oil pump motor comprising a casing (1), characterized in that: The inner wall of the casing (1) is fixedly connected with a motor stator assembly (11), one end of the casing (1) is fixedly connected with one side of an oil pump mounting plate (5), the other side of the oil pump mounting plate (5) is fixedly connected with a pump base (6), the housing of the pump base (6) is nested in the housing of the casing (1), the front end of the pump base (6) is fixedly provided with a pump cover (7) to form a closed space, the center of the pump cover (7) and the center of the bottom of the pump base (6) are provided with holes for fixedly connecting a motor spindle (3), the shaft body of the motor spindle (3) is rotatably provided with a motor shaft sleeve (4), the shaft body of the motor shaft sleeve (4) is fixedly provided with a motor rotor (12), the output end of the motor shaft sleeve (4) is connected with an impeller (8) and provides power.

2. A cooled oil pump motor according to claim 1, characterized in that: The casing (1) comprises an inner casing (10), the end of the inner wall of the casing (1) is fixedly provided with the inner casing (10), and the motor stator assembly (11) is arranged between the casing (1) and the inner casing (10).

3. A cooled oil pump motor according to claim 1, characterized in that: Deep groove ball bearings (41) and sliding bearings (42) are arranged between the shaft body of the motor spindle (3) and the motor shaft sleeve (4) to support the rotation of the motor shaft sleeve (4).

4. A cooled oil pump motor according to claim 1, characterized in that: The pump base (6) further comprises an oil outlet (61), and the housing of the pump base (6) is provided with the oil outlet (61) for supplying oil to external devices.

5. A cooled oil pump motor according to claim 1, characterized in that: The pump cover (7) further comprises an oil inlet (71), and the middle part of the housing of the pump cover (7) is provided with the oil inlet (71) for entering hydraulic oil.

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