CN2937559Y

CN2937559Y - Vane pump of hydraulic motor

Info

Publication number: CN2937559Y
Application number: CNU2006200796229U
Authority: CN
Inventors: 冀宏; 胡启辉; 王峥嵘; 张玮; 魏列江; 郜立焕; 傅新
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2006-08-15
Filing date: 2006-08-15
Publication date: 2007-08-22
Anticipated expiration: 2016-08-15

Abstract

A hydraulic electric motor blade pump aims to drive directly a rotor of a blade pump connected with the rotor of the electric motor into a whole body to make the electrical energy directly converted to the hydraulic energy to be output through a motor winding. An electric motor stator is mounted in a pump shell and a motor winding is mounted in the electric motor stator. Rotor bars are uniformly distributed in an electric motor rotor and each end ring is respectively at two sides of the electric motor rotor. An electric motor rotor sleeve is mounted in the electric motor rotor and an electric motor rotor pressure plate is fixed with the electric motor rotor sleeve. A solid self lubricating bearing is mounted in the electric motor rotor sleeve and the electric motor rotor is supported on a main end cover through the solid self lubricating bearing. The electric motor rotor sleeve is connected with a main shaft through a first spline and a circular nut and the right end of the main shaft is connected with the blade pump rotor through a second spline. A left port plate, a blade pump stator and a right port plate are pressed tightly in the main end cover through an oil outlet gland and the oil outlet gland is connected with the main end cover. The main end cover is provided with an input pickup port and the oil outlet gland is provided with an oil outlet. The internal surface of the pump shell is provided with an axial oil passing tank.

Description

A kind of blade pump for hydraulic engine

Technical field

The utility model relates to vane pump, relates in particular to blade pump for hydraulic engine.

Background technique

Vane pump is a kind of structural type of oil hydraulic pump, has advantages such as discharge uniformity is good, noise is lower, has therefore obtained to use widely.At present, vane pump is as a Hydraulic power units independently, needing to connect to form motor-hydraulic pump unit by its overhanging pump shaft and independently motor or internal-combustion engine forms hydraulic power unit and carries out work, this connection needs devices such as shaft joint, pump bracket, because independently the motor volume is bigger, add annexes such as shaft joint, whole hydraulic power unit volume weight is just very big.The motor that is connected with vane pump generally all contains cooling fan in addition, and therefore whole hydraulic power unit noise is also very big; Because vane pump has outrigger shaft, therefore there is the external leakage approach simultaneously.All there is the problem of oil suction deficiency to some extent in general oil hydraulic pump, therefore the inlet port at main pump need be provided with service pump in order to improve the oil absorption of main pump, service pump generally also is an oil hydraulic pump independently, need independent motor driving, therefore whole hydraulic power unit more complicated, volume are bigger.

Summary of the invention

The purpose of this utility model provides a kind of blade pump for hydraulic engine, directly drives the blade pump rotor that combines as a whole with rotor by motor windings, and making electric energy be converted into hydraulic pressure can export.

The utility model is a kind of blade pump for hydraulic engine, main shaft 13 is supported on the main end cap 34 by two bearings 22, the right-hand member of main shaft 13 is supported in the right side thrust plate 31 by sliding bearing 28, be evenly equipped with blade 41 on the blade pump rotor 27, motor stator 18 is installed in the pump case 15, motor windings 16 is housed in the motor stator 18, be evenly equipped with rotor bar 40 in the rotor 23, respectively there is an end ring 19 rotor 23 both sides, rotor 23 inside are equipped with rotor cover 11, rotor pressing plate 14 tightens together with rotor cover 11, rotor overlaps 11 inside self-lubricating solid bearing 24 is housed, rotor 23 is supported on the main end cap 34 by self-lubricating solid bearing 24, rotor cover 11 is by the first spline 13a, round nut 12 is connected with main shaft 13, the right-hand member of main shaft 13 is connected with blade pump rotor 27 by the second spline 13b, left side thrust plate 25, blade pump stator 26, right side thrust plate 31 is pressed on main end cap 34 inside by oil outlet gland 32, oil outlet gland 32 is connected with main end cap 34, offer inlet port 34b on the main end cap 34, offer oil outlet 32a on the oil outlet gland 32, pump case 15 internal surfaces offer axially logical oil groove 15a, are provided with on the pump case 15 by wire board 5, screw 6, the embedded terminal box that terminal box backplate 3 constitutes.

The utility model is compared with background technique, the useful effect that has is: this blade pump for hydraulic engine three of drive motor, vane pump, centrifugal service pump independently element become one from structure, not only make hydraulic power unit structurally greatly simplify, saved the connection transmission device, made that hydraulic power unit is compact more, volume is little, in light weight; And directly simplified power chain, electric energy is converted into hydraulic pressure through blade pump for hydraulic engine and can exports, and has higher efficient; Blade pump for hydraulic engine does not need outer projecting shaft, sealing reliably simultaneously, does not therefore have external leakage; The present invention has adopted but mode of oil cooling, has removed the fan in the motor, therefore removed the air power noise source, because the integrated centrifugal service pump of orifice plate, so main pump oil suction abundance, eliminated Cavitation Noise, whole thus blade pump for hydraulic engine has excellent quiet performance.The utlity model has quiet, compact structure, efficient height, cooling convenient, do not have advantage such as external leakage, can be widely used in the hydraulic system as kinetic pump, also be highly suitable for the medium transport that mustn't leak outside simultaneously.

Description of drawings

Fig. 1 is a structural drawing of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 a is the structural drawing of Fig. 1 rotor cover, and Fig. 3 b is the left view of Fig. 3 a rotor cover;

Fig. 4 is the structural drawing of main end cap among Fig. 1.

Among the figure: 1. screw, 2. spring washer, 3. terminal box backplate, 4. seal ring, 5. wire board, 6. screw, 7. hexagon thin nut, 8. seal ring, 9. sealing trim ring, 10. flat gasket, 11. rotor covers, 11a. inclined hole, 12. little round nut, 13. main shafts, 13a. first spline, 13b. second spline, 14. the axially logical oil groove of rotor pressing plate, 15. pump cases, 15a., 16. motor windings, 17. insulating paper, 18. motor stators, 19. end ring, 20. screws, 21. spring washer, 22. bearings, 23. rotors, 24. self-lubricating solid bearings, 25. left thrust plate, 26. pump stators, 27. pump rotors, 28. sliding bearing, 29. seal rings, 30. seal rings, 31. right thrust plate, 32. oil outlet glands, 33. screws, 34. main end cap, 34a. sidewise hole, 34b. inlet port, 34c. through hole, 35. seal rings, 36. screws, 37. the wire board trim ring, 38. stator compressing tablets, 39. rotor bars, 40. the stator coil press strip, 41. blades, 42. straight pins.

Embodiment

As shown in Figure 1, motor stator 18 is installed in pump case 15, motor windings 16 is housed in the motor stator 18.As shown in Figure 1 and Figure 2, be evenly equipped with rotor bar 40 in the rotor 23.As shown in Figure 1, respectively there is an end ring 19 rotor 23 both sides, rotor 23 inside are equipped with rotor cover 11, rotor pressing plate 14 is by screw 20, resilient pad 21 tightens together with rotor cover 11, rotor overlaps 11 inside self-lubricating solid bearing 24 is housed, rotor 23 is supported on the main end cap 34 by self-lubricating solid bearing 24, rotor cover 11 is by the first spline 13a, round nut 12 is connected with main shaft 13, main shaft 13 is supported on the main end cap 34 by two bearings 22, the right-hand member of main shaft 13 is connected with blade pump rotor 27 by the second spline 13b, the right-hand member of main shaft 13 is supported in the right side thrust plate 31 by sliding bearing 28, be evenly equipped with blade 41 on the blade pump rotor 27, left side thrust plate 25, blade pump stator 26, right side thrust plate 31 is pressed on main end cap 34 inside by oil outlet gland 32, and oil outlet gland 32 is connected with main end cap 34 by screw 33.As shown in Figure 4, offer inlet port 34b on the main end cap 34.As shown in Figure 1, offer oil outlet 32a on the oil outlet gland 32.As shown in Figure 2, offer axially logical oil groove 15a on the pump case 15.As shown in Figure 1, be provided with the embedded terminal box that constitutes by wire board 5, screw 6, terminal box backplate 3 etc. on the pump case 15.

Shown in Fig. 3 a and Fig. 3 b, in the rotor cover 11 a plurality of uniform inclined hole 11a are arranged, inclined hole (11a) is axis tilt 45 degree of main shaft 13 relatively, and hectare 20 degree after the sense of rotation of relative rotor 23.

As shown in Figure 4, uniform a plurality of through hole 34c on the main end cap 34, the right-hand member of uniform through hole 34c has side direction breach 34a on the main end cap 34.

Working procedure of the present utility model is as follows:

As shown in Figure 1, rotor 23 links by rotor cover 11, first spline 13a and main shaft, the rotor assembly of compositions such as rotor 23, rotor cover 11 is supported on the main end cap 34 by bearing 22, self-lubricating solid bearing 24, main shaft 13 is connected with blade pump rotor 27 by the second spline 13b, left side thrust plate 25, blade pump stator 26, right side thrust plate 31 are pressed together by oil outlet gland 32, guarantee end face seal.

As shown in Figure 1, when connecting power supply to motor windings, electromagnetic torque drive motor rotor assembly, it is rotor 23, rotor cover 11, end ring 19 grades rotate, rotor cover 11 drives main shaft 13 rotations by the first spline 13a, main shaft 13 drives blade pump rotor 27 rotations by the second spline 13b, as Fig. 1, shown in Figure 4, fluid enters the inner chamber of pump case 15 from inlet port 34a, as Fig. 1, Fig. 2, shown in Fig. 3 a, oil groove 15a in pump case 15 enters the left end of rotor cover 11, when the rotor cover 11 that contains a plurality of inclined hole 11a rotates with rotor 23, rotor cover 11 plays the effect of centrifugal pump, as shown in Figure 4, fluid is transported to the sidewise hole 34a of main end cap 34 by inclined hole 11a, among the through hole 34c, enter again in the oil sucking window of vane pump, under centrifugal action, blade 41 heads that are distributed in the blade pump rotor 27 are close on the inside of blade pump stator 26, the outer round surface of adjacent two blades 41 and blade pump stator 26, the internal surface of left side thrust plate 25 and right side thrust plate, the outer round surface of blade pump rotor 27 is formed the blade working chamber, when the roundlet segmental arc of blade pump rotor 27 steering blade pump stators 25, blade working chamber volume reduces, carry out the high pressure oil extraction, the high pressure oil of discharge is discharged by oil outlet 32a.(each oilhole, gap) mobile fluid is taken away heat in pump case 15, and the outer surface by pump case 15 dispels the heat simultaneously.

Claims

1, a kind of blade pump for hydraulic engine, main shaft (13) is supported on the main end cap (34) by two bearings (22), the right-hand member of main shaft (13) is supported in the right side thrust plate (31) by sliding bearing (28), be evenly equipped with blade (41) on the blade pump rotor (27), it is characterized in that being equipped with in the pump case (15) motor stator (18), motor windings (16) is housed in the motor stator (18), be evenly equipped with rotor bar (40) in the rotor (23), respectively there is an end ring (19) rotor (23) both sides, rotor (23) inside is equipped with rotor cover (11), rotor pressing plate (14) tightens together with rotor cover (11), self-lubricating solid bearing (24) is equipped with in rotor cover (11) inside, rotor (23) is supported on the main end cap (34) by self-lubricating solid bearing (24), rotor cover (11) is by first spline (13a), round nut (12) is connected with main shaft (13), the right-hand member of main shaft (13) is connected with blade pump rotor (27) by second spline (13b), left side thrust plate (25), blade pump stator (26), right side thrust plate (31) is pressed on main end cap (34) inside by oil outlet gland (32), oil outlet gland (32) is connected with main end cap (34), offer inlet port (34b) on the main end cap (34), offer oil outlet (32a) on the oil outlet gland (32), pump case (15) internal surface offers axially logical oil groove (15a), is provided with on the pump case (15) by wire board (5), screw (6), the embedded terminal box that terminal box backplate (3) constitutes.

2, blade pump for hydraulic engine according to claim 1 is characterized in that rotor (23) inside is equipped with rotor cover (11).

3, blade pump for hydraulic engine according to claim 1, it is characterized in that a plurality of uniform inclined holes (11a) are arranged in the rotor cover (11), inclined hole (11a) is axis tilt 45 degree of main shaft (13) relatively, and hectare 20 degree after the sense of rotation of relative rotor (23).

4, blade pump for hydraulic engine according to claim 1 is characterized in that rotor cover (11) inside is equipped with self-lubricating solid bearing (24).

5, blade pump for hydraulic engine according to claim 1 is characterized in that main end cap (34) gone up uniform a plurality of through holes (34c).

6, blade pump for hydraulic engine according to claim 1 is characterized in that the right-hand member of through hole (34c) uniform on the main end cap (34) has side direction breach (34a).

7, blade pump for hydraulic engine according to claim 1 is characterized in that the embedded terminal box that is made of wire board (5), screw (6), terminal box backplate (3) is arranged on the pump case (15).

8, blade pump for hydraulic engine according to claim 1 is characterized in that pump case (15) internal surface offers a plurality of axially logical oil grooves (15a).

9, blade pump for hydraulic engine according to claim 1 is characterized in that rotor pressing plate (14) tightens together with rotor cover (11) by screw (20), resilient pad (21).

10, blade pump for hydraulic engine according to claim 1 is characterized in that oil outlet gland (32) is connected with main end cap (34) by screw (33).