CN203420844U - Permanent magnet axial plunger type electric liquid pump rotor - Google Patents

Abstract

A permanent magnet axial plunger type electro-hydraulic pump rotor, which consists of a rotor body (6), a magnetic steel (7), a magnetic isolation block (15), a protective cover (8) and a copper plate (12), and the rotor body ( 6) There is a groove on the surface, and the surface of the groove is glued with the same number of magnetic steel (7) and magnetic isolation block (15), and the magnetic isolation block (15) separates the magnetic steel (7). A protective cover (8) is provided to fasten the permanent magnetic steel (7) and the magnetic isolation block (15) on the rotor body (6), and the right end of the rotor body (6) is covered with a copper plate (12); the utility model will The rotor of the permanent magnet servo motor is directly integrated with the cylinder structure of the axial piston pump without any hinges in the middle, so the structure is simple and the reliability is high; the hollowed out parts on both sides of the rotor can be used to install bearings, swash plate and distribution plate, The internal space structure of the electro-hydraulic pump is compact, and the volume of the electro-hydraulic pump is reduced; the rotor adopts the type of permanent magnet servo motor and the electro-hydraulic pump can be integrated with a speed sensor component, which is convenient for the realization of servo control.

Description

A permanent magnet axial plunger type electro-hydraulic pump rotor

technical field

The utility model relates to a permanent magnet axial plunger type electro-hydraulic pump rotor, in particular to a permanent magnet axial plunger pump integrating a permanent magnet servo motor and a swash plate axial plunger pump and integrating a speed sensor. The rotor of the plunger type electrohydraulic pump. It belongs to the technical field of electro-hydraulic pump rotors.

Background technique

The electro-hydraulic pump is a new type of hydraulic power unit that highly integrates the electric motor and the hydraulic pump in one housing. It inputs AC/DC power supply and outputs (high-pressure) hydraulic oil; The hydraulic pump is embedded in the motor, and the external interfaces are only power cables and hydraulic input and output interfaces.

At present, domestic motor and hydraulic pump integrated/integrated patents for motor pumps either use asynchronous motors, which cannot be adjusted or have poor speed regulation performance, or the rotor of the motor and the cylinder of the pump are articulated in various ways, and the structure of the rotor is complicated. , the structure is not compact enough, making the volume of the pump too large. Aiming at the above problems, the utility model designs a permanent magnet axial plunger type electro-hydraulic pump rotor that adopts a permanent magnet servo motor type, the motor rotor and the pump rotor are highly integrated, and a speed sensor can be integrated.

Utility model content

In view of the above problems, the utility model provides a permanent magnet axial plunger type electro-hydraulic pump rotor, which is a permanent magnet servo motor type, the motor rotor and the pump rotor are highly integrated, and the speed sensor can be integrated. Axial piston electrohydraulic pump rotor. The utility model has a simple structure, can make the electro-hydraulic pump compact in structure and has good speed regulation performance, and can replace the existing electro-hydraulic pump rotor structure combining the motor rotor and the plunger pump cylinder through various hinges.

The technical scheme adopted in the utility model is: a permanent magnet axial plunger type electro-hydraulic pump rotor, which combines the rotor of the permanent magnet servo motor and the cylinder body of the axial plunger pump into one. The rotor of the permanent magnet axial plunger type electro-hydraulic pump consists of a rotor body 6 , a magnetic steel 7 , a magnetic isolation block 15 , a protective cover 8 and a copper plate 12 . The positional connection relationship between them is: the surface of the rotor body 6 has a groove, and the surface of the groove is glued with high-strength adhesive to have the same number of magnetic steel 7 and magnetic isolation blocks 15, and the magnetic isolation blocks 15 separate the magnetic steel 7, The outermost part is provided with a protective cover 8, and the permanent magnetic steel 7 and the magnetic isolation block 15 are fastened on the rotor body 6, and the right end of the rotor body 6 is covered with a copper plate 12.

As shown in Figure 3, the rotor body 6 is a cylindrical member with a number of plunger holes 5 evenly distributed inside it for installing the plunger 23, and three through holes are evenly distributed outside the plunger hole 5 to form the inner flow channel of the rotor. 13, connected to the cavities on both sides of the rotor body 6; inside the plunger hole 5 there is a bushing 4 and a plunger cavity 10, and the right end of the plunger cavity 10 is provided with an oil suction and discharge channel 11;

As shown in Figure 1, the hollowed out part on the left side of the rotor body 6 is provided with a swash plate bearing position 1 and a swash plate position 2, which are used to install the left side of the rotor body 6 on the swash plate assembly 19 through the swash plate bearing 18 Above: the hollowed out part on the right side of the rotor body 6 is provided with a distribution plate bearing position 14 and a distribution plate position 9 for mounting the right side of the rotor body 6 on the distribution plate assembly 20 through the distribution plate bearing 21 .

The center of the rotor body 6 is provided with a spline hole 3 for installing a spline shaft 22 .

Described magnetic steel 7 is a tile-like piece, is a permanent magnet.

The magnetic spacer block 15 is a long strip, used to separate adjacent magnetic steels 7 .

The protective cover 8 is a cylindrical member, which is used to fasten the magnetic steel 7 and the magnetic isolation block 15 on the surface of the rotor body 6 .

The copper plate 12 is a disc-shaped piece on which a distribution window 16 is arranged.

A typical application of the utility model is shown in Figure 5, the left side of the rotor body 6 is installed on the swash plate assembly 19 through the swash plate bearing 18, and the right side of the rotor body 6 is installed on the distribution plate assembly through the distribution plate bearing 21 20; the right side of the spline shaft 22 is installed in the spline hole 3 in the center of the rotor, and the left side is installed in the swash plate assembly 19. The sensor assembly 17 is installed inside the swash plate assembly 19, and the sensor assembly 17 is located on the spline shaft 22 on the left side. The rotor body 6 is placed inside the stator armature winding 24 . The plunger 23 hinged with the swash plate assembly 19 extends into the plunger hole 5 .

The beneficial effect of the utility model is that the rotor of the permanent magnet servo motor and the cylinder structure of the axial plunger pump are directly integrated into one body, without any hinge joint in the middle, the structure is simple, and the reliability is high; the hollowed out parts on both sides of the rotor can be used for The installation of bearings, swash plate and distribution plate makes the internal space of the electro-hydraulic pump compact and reduces the volume of the electro-hydraulic pump; the rotor adopts the type of permanent magnet servo motor and enables the electro-hydraulic pump to integrate a speed sensor component, which is convenient for the realization of servo control.

Description of drawings

Figure 1 Front view of electro-hydraulic pump rotor

Figure 2 Electro-hydraulic pump rotor A-A sectional view

Figure 3 Electro-hydraulic pump rotor left view

Figure 4 The right view of the rotor of the electro-hydraulic pump

Figure 5 Typical application of electro-hydraulic pump rotors

Explanation of reference numerals: 1. Swash plate bearing position, 2. Swash plate position, 3. Spline hole, 4. Bushing, 5. Plunger hole, 6. Rotor body, 7. Magnetic steel, 8. Protective cover, 9. Distribution plate position, 10. Plunger cavity, 11. Oil suction and discharge channel, 12. Copper plate, 13. Rotor inner flow channel, 14. Distribution plate bearing position, 15. Magnetic isolation block, 16. Flow distribution window, 17. Sensor Components, 18. Swash plate bearing, 19. Swash plate assembly, 20. Valve plate assembly, 21. Valve plate bearing, 22. Spline shaft, 23. Plunger, 24. Stator armature winding.

Detailed ways

A rotor of a permanent magnet axial plunger type electro-hydraulic pump combines the rotor of a permanent magnet servo motor and the cylinder body of an axial plunger pump into one. The rotor of the permanent magnet axial plunger type electro-hydraulic pump consists of a rotor body 6 , a magnetic steel 7 , a magnetic isolation block 15 , a protective cover 8 and a copper plate 12 . The positional connection relationship between them is: the surface of the rotor body 6 has a groove, and the surface of the groove is glued with high-strength adhesive to have the same number of magnetic steel 7 and magnetic isolation blocks 15, and the magnetic isolation blocks 15 separate the magnetic steel 7, The outermost part is provided with a protective cover 8, and the permanent magnetic steel 7 and the magnetic isolation block 15 are fastened on the rotor body 6, and the right end of the rotor body 6 is covered with a copper plate 12.

As shown in Figure 3, the rotor body 6 is a cylindrical member with nine plunger holes 5 evenly distributed inside it for installing the plunger 23, and three through holes evenly distributed outside the plunger hole 5 form the internal flow of the rotor. Road 13, which communicates with the cavities on both sides of the rotor body 6; inside the plunger hole 5 there is a bushing 4 and a plunger cavity 10, and the right end of the plunger cavity 10 is provided with an oil suction and discharge channel 11;

As shown in Figure 1, Figure 2 and Figure 4, the hollowed out part on the left side of the rotor body 6 is provided with a swash plate bearing position 1 and a swash plate position 2, which are used to pass the left side of the rotor body 6 through the swash plate bearing 18 Installed on the swash plate assembly 19; the hollowed out part on the right side of the rotor body 6 is provided with a distribution plate bearing position 14 and a distribution plate position 9, which are used to install the right side of the rotor body 6 on the distribution plate assembly 20 through the distribution plate bearing 21 .

The center of the rotor body 6 is provided with a spline hole 3 for installing a spline shaft 22 .

Described magnetic steel 7 is a tile-like piece, is a permanent magnet.

The magnetic spacer block 15 is a long strip, used to separate adjacent magnetic steels 7 .

The protective cover 8 is a cylindrical member, which is used to fasten the magnetic steel 7 and the magnetic isolation block 15 on the surface of the rotor body 6 .

The copper plate 12 is a disc-shaped piece on which nine flow distribution windows 16 are arranged.

A typical application of the utility model is shown in Figure 5, the left side of the rotor is installed on the swash plate assembly 19 through the swash plate bearing 18, and the right side of the rotor is installed on the distribution plate assembly 20 through the distribution plate bearing 21; The right side of the key shaft 22 is installed in the spline hole 3 at the center of the rotor, and the left side is installed in the swash plate assembly 19. The sensor assembly 17 is installed inside the swash plate assembly 19, and the sensor assembly 17 is located on the left side of the spline shaft 22. The rotor is placed inside the stator armature winding 24 . The plunger 23 hinged with the swash plate assembly 19 extends into the plunger hole 5 .

Claims (1)

1. permanent magnetism axial piston electricity liquid pump rotor, it is characterized in that: the rotor of permanent-magnet servo motor and the cylinder body of axial piston pump unite two into one, this permanent magnetism axial piston electricity liquid pump rotor is by rotor body (6), magnet steel (7), every magnetic patch (15), safety cover (8) and copper coin (12) form, rotor body (6) surface has groove, groove surfaces is adhesive with the magnet steel that quantity is identical (7) by high strength and every magnetic patch (15), every magnetic patch (15), magnet steel (7) is separated, most external is provided with safety cover (8), by permanent magnetic steel (7) with every magnetic patch (15), be fastened on rotor body (6), rotor body (6) right-hand member is covered with copper coin (12),

Described rotor body (6) is cylindric, its inner uniform a plurality of plunger holes (5), and for plunger (23) is installed, uniform three through holes in plunger hole (5) outside form internal flow road (13), are communicated with the cavity of rotor body (6) both sides; There are lining (4) and plunger cavity (10) in plunger hole (5) inside, and plunger cavity (10) right-hand member is provided with inhales oil drain passage (11); Rotor body (6) left side cut-out is provided with swashplate bearing position (1) and swash plate position (2), for the swashplate bearing (18) that passes on left of rotor body (6) is arranged on to swash plate assembly (19); Rotor body (6) right side cut-out is provided with thrust plate bearing position (14) and thrust plate position (9), for the right side of rotor body (6) is arranged on to thrust plate assembly (20) by thrust plate bearing (21); Rotor body (6) center is provided with splined hole (3), for splined shaft (22) is installed;

Described magnet steel (7) is tile part, is permanent magnet;

Described is long strip shaped piece every magnetic patch (15), for adjacent magnet steel (7) is separated;

Described safety cover (8) is cylindrical tubular member, for by magnet steel (7) be fastened on the surface of rotor body (6) every magnetic patch (15);

Described copper coin (12) is discoid, which is provided with a plurality of flow windows (16).

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