CN210440207U

CN210440207U - Hydraulic pump driven by outer rotor to absorb oil

Info

Publication number: CN210440207U
Application number: CN201921318739.1U
Authority: CN
Inventors: 王竹宇; 翁明堂
Original assignee: Hydraulik Power Co ltd
Current assignee: Hydraulik Power Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-01
Anticipated expiration: 2029-08-13

Abstract

The outer rotor drives a hydraulic pump for absorbing oil, the outer rotor is arranged in the stator winding, and the rotor magnetic fins are uniformly distributed on the surface of the outer ring of the outer rotor; the inner rotor is arranged in the outer rotor and is eccentrically and rotationally matched with the outer rotor; after the stator winding is electrified, the rotor magnetic fins drive the outer rotor to rotate, and then the inner rotor is driven to rotate. The magnetic field is utilized to drive the rotor magnetic fins and the outer rotor to rotate, then the inner rotor is driven to rotate through mechanical cooperation so as to carry out oil absorption operation, and the oil absorption device is suitable for the situations of low rotating speed, long distance between the outer rotor and the inner rotor and large rotating torque.

Description

Hydraulic pump driven by outer rotor to absorb oil

Technical Field

The utility model belongs to the technical field of hydraulic oil pump machinery and specifically relates to an oil absorption hydraulic pump is driven by external rotor.

Background

In the prior art, a rotor oil pump of a hydraulic oil pump comprises a pump body, a pump cover, an inner rotor, an outer rotor and a transmission shaft; during operation, through the relative rotation of inner rotor and outer rotor, the oil body gets into from the oil inlet, and through the rotation of inner and outer rotor, the change that produces the volume causes hydraulic oil compression back pressure rise, then flows from the oil-out. Referring to fig. 8, in the conventional structure, a transmission shaft is coupled with an inner rotor to actively rotate to drive the outer rotor, and the transmission shaft is easily broken under the condition of large torque. And in order to accommodate the transmission mode of coupling the inner rotor and the motor by using the transmission shaft, the whole volume and the axial length are increased.

Disclosure of Invention

The utility model discloses a solve current problem, aim at providing one kind by the oil absorption hydraulic pump of external rotor drive. In order to achieve the above object, in the technical scheme adopted in the utility model, the housing is provided with an oil inlet and an oil outlet, and further comprises a stator winding, rotor magnetic fins, an outer rotor and an inner rotor, wherein the outer rotor is arranged in the stator winding, and the rotor magnetic fins are uniformly distributed on the surface of the outer ring of the outer rotor; the inner rotor is arranged in the outer rotor and is eccentrically and rotationally matched with the outer rotor; after the stator winding is electrified, the magnetic poles on the rotor magnetic fins drive the outer rotor to rotate, so that the inner rotor is driven to rotate, and oil absorption operation is carried out.

Wherein, still include the driver, the driver provides the correct current direction for the stator winding.

Wherein, a magnetism isolating ring is arranged between the rotor magnetic fin and the outer rotor.

Wherein, the magnetism isolating ring is fixedly connected with the outer rotor through a non-magnetic locking piece.

And magnetic isolating layers are arranged on the outer ring surface, the front winding surface and the rear winding surface of the stator winding.

The outer rotor is provided with a front oil distributing disc and a rear oil distributing disc, wherein the front oil distributing disc and the rear oil distributing disc are respectively arranged at the front and the rear of the outer rotor and are matched and fixed through a stepped surface; the front oil distributing disc and the rear oil distributing disc are communicated with the oil inlet and the oil outlet respectively. Wherein, the front and back surfaces of the front oil distributing disc and the back oil distributing disc are respectively provided with a sealing ring for preventing leakage. The magnetic-field-induced motor also comprises a Hall element serving as a sensor, wherein the Hall element is arranged between the stator winding and the rotor magnetic fins and feeds a current signal back to the driver.

The output ends of the Hall elements are respectively added to the base electrodes of the two three crystal collecting pipes and are used for outputting voltages with opposite levels, and the three crystal collecting pipes are controlled to be switched on and switched off, so that the current in the winding is controlled, the winding generates a magnetic field, and the rotor is attracted to continuously run.

Compared with the prior art, the utility model discloses utilize magnetic field to drive rotor magnetic fin, external rotor and rotate, then rotatory and further carry out the oil absorption operation through mechanical complex drive inner rotor, be applicable to the low and external rotor of rotational speed, inner rotor distance far away, the great situation of turning moment. Can produce great moment under the same energy consumption to the transmission structure who saves makes whole motor pump group volume reduce, reduces the material demand, and is bigger to the design mounting means elasticity. The rotor magnetic fins and the outer rotor are directly and fixedly connected, so that the maximum power output of an electromagnetic force field under the same energy consumption is ensured, and the working efficiency is improved. Because of adopting electromagnetic drive, mechanical connecting piece reduces, can make the mechanical cooperation interference when moving reduce, improves rotational stability and noise reduction.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along plane C-C of FIG. 1;

FIG. 5 is a cross-sectional view taken along plane D-D of FIG. 1;

fig. 6 is a schematic structural diagram of an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an embodiment of the present invention;

FIG. 8 is a schematic diagram of a prior art structure;

referring to the attached drawing, the hydraulic front cover 1, the front oil distribution disc 2, the first magnetism isolation ring 3, the second magnetism isolation ring 4, the stator winding 5, the rotor magnetism fins 6, the third magnetism isolation ring 7, the outer rotor 8, the rear oil distribution disc 9, the hydraulic rear cover 10, the shell 11, the Hall element 12, the fourth magnetism isolation ring 13, the inner rotor 14, the axis pole 15, the small junction box 16 and the large junction box 17.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Referring to fig. 1 to 7, fig. 1 to 7 show an embodiment of the present invention, in which: the rotor magnetic fins 6 adopt permanent magnetic steel, and are evenly distributed and fixed on the surface of the outer ring of the magnetism isolating ring four 13; preferably, the magnetism isolating ring four 13 is arranged on the outer side of the outer rotor 8 and is connected by using a non-magnetic locking piece.

The inner rotor 14 is arranged inside the outer rotor 8 and is in eccentric rotation fit with the outer rotor, and the center of the inner rotor 14 is fixed by an axial rod 15 and serves as a rotation fulcrum.

The stator winding 5 is fixed on the inner side of the second magnetism isolating ring 4; the magnetism isolating ring II 4 is arranged on the inner side of the shell 11. Referring to fig. 3, the first magnetism isolating ring 3 and the third magnetism isolating ring 7 are respectively arranged in front of and behind the stator winding 5 to form a front magnetism isolating layer and a rear magnetism isolating layer. After the above-mentioned matching is completed, the inner side of the housing 11 is used as a reference to match with the outer side of the magnetism isolating ring 24.

Further, referring to fig. 1, a terminal block 17 is fixed to the right side of the housing 11, one end of the terminal block 17 is connected to the stator winding 5, and the other end thereof is connected to a power supply and receives power. Referring to fig. 1, a hall element 12 is placed between the stator winding 5 and the rotor magnetic fins 6.

Referring to fig. 1, a junction box 16 is fixed on the left side of the housing 11; referring to fig. 3 and 4, the front oil distribution disc 2 is arranged in a pre-processed matching groove in the hydraulic front cover 1 according to the design direction, and the front and back surfaces of the front oil distribution disc 2 are provided with sealing rings to prevent oil leakage. After the process is finished, the hydraulic front cover 1 is attached to the shell 11 from the front and is fixed by using locking screws, and a stepped geometric shape is arranged between the hydraulic front cover and the shell for positioning and matching and a sealing ring for preventing leakage.

The rear oil distribution plate 9 is arranged in a matching groove which is pre-processed by the hydraulic rear cover 10 according to the design direction, and the front and the rear surfaces of the rear oil distribution plate 9 are provided with sealing rings to prevent oil leakage. After the process is finished, the hydraulic rear cover 10 is attached to the shell 11 from the rear and is fixed by using locking screws, and a stepped geometric shape is arranged between the hydraulic rear cover and the shell for positioning and matching and a sealing ring for preventing leakage.

The magnetism isolating ring IV 13 is arranged on the outer side of the outer rotor 8 and is connected by using a non-magnetic locking piece so as to ensure no loss of power transmission and prevent magnetic lines of force from being transmitted to the outer rotor 8 through the locking piece.

The four sides of the stator winding 5 and the rotor magnetic fins 6 are isolated by magnetic isolation rings to ensure that the electromagnetic force field achieves the maximum power output under the same energy consumption.

In operation, the stator winding 5 starts to generate a magnetic field after being powered on; the magnetic poles on the rotor magnetic fins 6 can generate torque due to the magnetic field generated after the stator winding 5 is electrified, and drive the outer rotor 8 to synchronously rotate. The outer rotor 8 and the inner rotor 14 rotate through a common eccentric matching mechanism, and oil is absorbed.

Because the stator winding 5 must switch the current direction according to the magnetic pole orientation of the rotor magnetic fin 6 to make the rotor magnetic fin 6 continuously rotate, a Hall element 12 is arranged between the stator winding 5 and the rotor magnetic fin 6 as a sensor to feed back to the junction box 16

The driver inside the terminal block 16 provides the correct current direction for the stator winding 5.

The embodiment drives the rotor magnetic fins and the outer rotor to rotate by utilizing the magnetic field, and then drives the inner rotor to rotate through mechanical cooperation so as to carry out oil absorption operation, so that the oil absorption device is suitable for the situations of low rotating speed, long distance between the outer rotor and the inner rotor and large rotating torque. Can produce great moment under the same energy consumption to the transmission structure who saves makes whole motor pump group volume reduce, reduces the material demand, and is bigger to the design mounting means elasticity. The rotor magnetic fins and the outer rotor are directly and fixedly connected, so that the maximum power output of an electromagnetic force field under the same energy consumption is ensured, and the working efficiency is improved. Because of adopting electromagnetic drive, mechanical connecting piece reduces, can make the mechanical cooperation interference when moving reduce, improves rotational stability and noise reduction.

The embodiments of the present invention have been described in conjunction with the accompanying drawings and examples, the structures of which are not intended to limit the present invention, and those skilled in the art can make modifications as required, and all changes and modifications within the scope of the appended claims are within the scope of protection.

Claims

1. The utility model provides a by oil absorption hydraulic pump of external rotor drive, is equipped with oil inlet, oil-out on the casing, its characterized in that: the rotor magnetic fin structure comprises a stator winding, rotor magnetic fins, an outer rotor and an inner rotor, wherein the outer rotor is arranged in the stator winding, and the rotor magnetic fins are uniformly distributed on the surface of the outer ring of the outer rotor; the inner rotor is arranged in the outer rotor and is eccentrically and rotationally matched with the outer rotor;

after the stator winding is electrified, the magnetic poles on the rotor magnetic fins drive the outer rotor to rotate, and then the inner rotor is driven to rotate.

2. The hydraulic pump driven by external rotor to suck oil according to claim 1, wherein: a driver is also included that provides the correct current direction for the stator windings.

3. The hydraulic pump driven by external rotor to suck oil according to claim 1, wherein: and a magnetism isolating ring is arranged between the rotor magnetic fin and the outer rotor.

4. The hydraulic pump driven by the external rotor to suck oil according to claim 3, wherein: the magnetism isolating ring and the outer rotor are fixedly connected through a non-magnetic locking piece.

5. The hydraulic pump driven by external rotor for sucking oil of claim 1, 3 or 4, wherein: and magnetic isolating layers are arranged on the outer ring surface, the front winding surface and the rear winding surface of the stator winding.

6. The hydraulic pump driven by external rotor to suck oil according to claim 1, wherein: the front oil distribution disc and the rear oil distribution disc are respectively arranged at the front and the rear of the outer rotor and are matched and fixed through a stepped surface; the front oil distributing disc and the rear oil distributing disc are communicated with the oil inlet and the oil outlet respectively.

7. The hydraulic pump driven by external rotor to suck oil of claim 6, wherein: and the front surface and the rear surface of the front oil distribution disc and the rear oil distribution disc are respectively provided with a sealing ring for preventing leakage.

8. The hydraulic pump driven by the external rotor to suck oil according to claim 2, wherein: the Hall element is arranged between the stator winding and the rotor magnetic fins, and feeds a current signal back to the driver.

9. The hydraulic pump driven by the external rotor to suck oil according to claim 8, wherein: the output ends of the Hall elements are respectively added to the base electrodes of the two three crystal collecting pipes and are used for outputting voltages with opposite levels, and the three crystal collecting pipes are controlled to be switched on and switched off, so that the current in the winding is controlled, the winding generates a magnetic field, and the rotor is attracted to continuously run.