CN1063527C

CN1063527C - Shell-rotating double-action variable vane motor

Info

Publication number: CN1063527C
Application number: CN 92102269
Authority: CN
Inventors: 许连焕
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-07
Filing date: 1992-04-07
Publication date: 2001-03-21
Anticipated expiration: 2007-04-07
Also published as: CN1077245A

Abstract

The present invention relates to an oil motor belonging to the field of hydraulic transmission, particularly to a double-action or multiple-action rotary shell type variable vane motor which is characterized in that vanes for generating pushing torque are arranged in grooves in the circumference of a rotary shell, and the radial telescopic quantity of the vanes is changed by the switching movement of anchor-shaped sliding blocks in grooves on a stator so as to achieve the purpose of changing the discharge capacity of the motor. The present invention is applied to a wheel motor of a hydraulic-traditional automobile so that a traditional clutch, a traditional gear box, a traditional transmission shaft, a traditional front and back bridge differential speed box, all original braking systems in the automobile and even the steering mechanisms of the systems can be removed. The present invention can be simultaneously suitable for all mechanical fields which have low requirements for rotary speed accuracy and need transmission and speed changes.

Description

Shell-rotating double-action variable vane motor

The present invention relates to a kind of shell-rotating double-action variable vane motor in hydraulic transmission field.

The normal axle that adopts is fixed and the oil motor of housing rotation in hydraulic transmission vehicle and some machinery, its form mainly is axial piston, radial plunger type or multiaction ball-and-spigot, the oil motor of these structural types all exists a common weakness, be exactly that torque conversion range and speed range are all very little, can not the simultaneous adaptation vehicular traffic or high low speed and the requirement of weight load continually varying during the machinery operation.On January 20th, 1, foreign patent EP0043881Al announced a kind of fluid machinery: it includes stator, runner, be contained in the blade in the equidistant radial groove on the runner, this patent is characterised in that: the different rotating speeds of runner and corresponding torque are that the total allocation by working fluid decides, be contained in outside distributing valve and controlling the quantity of the oil pocket of working, the moment of torsion maximum of runner when all oil cylinders are all worked, the rotating speed minimum, if have only minimum oil cylinder work then the moment of torsion minimum of runner, but rotating speed maximum, thisly realize the speed change bending moment, not only complex structure but also can't realize stepless change by the mode that changes the active chamber number.

Purpose of the present invention is intended to realize the stepless change of shell-rotating type sliding-vane motor, removes the speed change control valve that is contained in the motor outside and the pipeline of corresponding complexity, reach have that volume is little, gearshift performance good, characteristics such as firm, applied range simple in structure.

A kind of shell-rotating double-action and variable vane motor (hereinafter to be referred as shell rotating vane sheet motor), it includes stator, transcapsidation, blade, producing the blade that promotes torque is contained in the radial groove of rotary shell inner circumference, it is characterized in that: stator 6 is an oval entity, on the symmetrical position of stator 6 center lines, be milled with two broad grooves, two anchor shape slide blockss 4 are contained in two grooves respectively and grooved seal composition variable oil pocket 7, but 4 foldings of anchor shape slide blocks are moved, the central authorities of two anchor shape slide blockss 4 respectively are equipped with and change the servo valve 27 that motor displacement is used, stator 6 center holes are milled with one section spline housing on stationary axle 33, and stator 6 can be done the swing of suitable angle on stationary axle 33.Pressure difference, servo valve and balance spring or the applied external force that relies on the variable oil pocket moved in the folding of slide blocks.Following conjunction with figs. is described the structure characteristic and the working principle of shell rotating vane sheet motor in detail.

Fig. 1 shell-rotating double-action variable vane motor radial section schematic representation.

Fig. 2 shell-rotating double-action variable vane motor axial section schematic representation.

Fig. 3 anchor shape slide blocks and servo valve generalized section.

1. transcapsidation 2. blades

3. sieve keyhole 4. anchor shape slide blockss

5. breach 6. stators

7. variable oil pocket 8. breach (with 5)

9. variable oil input channel 10. servo-actuated spools are communicated with oil duct

11. variable back oil road 12. work oil ducts

13. end cap is joined oil pocket 14. end caps

15. work oil duct 16. work oil ducts

17. thrust bush stator flow chambers 18.

19. blade groove oil canal 20. work oil ducts

21. Liner Seal Ring 22. Liner Seal Rings

23. thrust grommet 24. thrust snap rings

25. female 26. Liner Seal Rings of locking sieve (with 21)

27. servo-actuated valve body 28. spool breach

29. high voltage terminal gasket ring 30. low voltage terminal gasket rings

31. balance spring 32. compresses sieve cover

33. stationary axle 34. servo-actuated spools

35. anchor fluke 36. anchor flukes

37. holddown spring

Shell rotating vane sheet motor is mainly by transcapsidation 1, blade 2, and stator 6, anchor shape slide blocks 4,

anchor fluke

35,36, servo valve 27, stationary axle 33, end cap 14 constitutes.

One, transcapsidation 1:

Transcapsidation 1 is made by alloyed steel or high-strength abrasion-proof cast iron, is milled with the equidistant radial groove in it on the circle with dress blade 2 and blade holddown spring 37.Be drilled with Luo Shuankong 3 between the groove of transcapsidation 1 so that assembling sieve bolt.

Two, blade 2:

Blade 2 is to produce the vitals that promotes torque.Blade 2 is contained in the radial groove of transcapsidation 1 to being slidingly matched.Root of blade has stage clip 37 to head on and be connected with the hydraulic coupling of pressure oil with the balance blade top.Under the interaction of anchor shape slide blocks 4 anchor flukes 35,36 and blade holddown spring 37, blade does to change radially sliding of motor displacement in the radial groove of transcapsidation 1, and blade 2 not only produces torque but also play sealing high low pressure chamber.

Three, stator 6:

Stator 6 is an oval real cylinder, and its oval curve shape is similar substantially to double-acting vane pump stator inner curve shape.On the symmetrical position of stator 6 center lines, be milled with 2 broad grooves and make variable oil pocket 7.The both sides of stator 6 are milled with wing breach 8,5 respectively, so that hold the

anchor fluke

35,36 of anchor shape slide block 4.The center hole of stator 6 is milled with one section spline housing on stationary axle 33, spline is used flank centering, stator is contained in the swing that should be able to make suitable angle on the stationary axle, the wearing and tearing of bearing when this is the error owing to accuracy of manufacturing, accurate difficulty of assembling, use, these reasons are determining stator 6 and stationary axle 33 can not make integral body, can only on stationary axle, float, to adapt to the error of shell position.

Four, anchor shape slide blocks 4 and anchor fluke 35,36:

Anchor shape slide blocks 4 is all-in-one-piece with combining of

anchor fluke

35,36, also can be fabricated.

Anchor shape slide blocks 4 and anchor fluke the 35, the 36th, sliding-vane motor can variable critical piece, they in conjunction with after the surface of circular arc comprising semi major axis circular arc and transition curve on the similar constant flow paddle pump stator inner curve, as shown in Figure 3.

Anchor fluke

35,36 lean against respectively slide blocks 4 both sides and and slide blocks 4 become integral body, its surface with circular arc is connected together mutually and fits like a glove, a slide blocks can be furnished with 2 anchor flukes and also can be furnished with 4 anchor flukes, adopt 2 pawl structural types, two anchor flukes are contained in slide blocks 4 symmetrically and make on the radial centre lines of nearly blade 2 one ends, if application 4 pawl structural types, 4 symmetrical respectively slide blockss 4 that are contained in of anchor fluke are near on 4 arms of angle of blade one end.The center portion of slide blocks 4 processes the cavity of assembling servo valve and is drilled with the oil inlet and oil return road of controlled variable.

Five, servo valve:

The central position of two anchor shape slide blockss 4 all is equipped with servo valve, sees Fig. 1.Servo valve is a kind of pressure compensation stroking mechanism, and the structure of this valve and working principle are identical substantially with servo valve in the prior art axial piston pump.

Six, stationary axle 33 and end cap 14:

Stationary axle 33 and end cap 14 are support units of shell rotating vane sheet motor, see Fig. 2.Whole load on the motor pass on the stationary axle 33 by bearing from the both sides end cap.Being milled with one section spline on the external diameter of motor middle part stationary axle 33 cooperates with the center spline housing of stator 6.Stationary axle 33 inside are drilled with oil inlet and oil return passage 15,16.Stationary axle 33 has one of bead can join with the suspension system on vehicle or the machinery.End cap 14 plays hermetic motor simultaneously, sees Fig. 2.Transcapsidation 1 and end cap 14 usefulness sieve bolts are tightened to integral body, and sieve bolt radical equates with the number of blade.Two groups of sealing lining rings and packing ring are housed on the circumference on stationary axle 33 spline both sides form the gateway of turnover oil duct, its objective is the sealing the when oil duct 12,20 of working on oil duct 15,16 and the stator 6 on can retainer shaft is communicated with, can allow stator 6 on stationary axle 33, do the swing of suitable angle again, guarantee that stator 6 and 2 end caps 14 do not produce lateral pressure.

This motor variable principle is as follows:

When motor load increases the weight of, the phenomenon that is reflected in the system is that pressure raises, the pressure that oil input channel is 9 li is once raise, the pressure reduction that acts on the spool 34 also increases, spool 34 upwards promotes and compression balance spring 31, see Fig. 3, spring by compression after, elastic force increases, this elastic force and act on fluid pressure balance on the spool after, spool 34 just rests on the new position, because spool 34 moves up, breach 28 on the spool has been linked up variable back oil road 11, and the fluid of this variations per hour oil pocket 7 just flows to return tube through the servo-actuated spool intercommunicating pore 10 variable back oil road 11 of flowing through.After variable oil pocket 7 decompressions, anchor shape slide blocks 4 is drawn close to stator center under positive pressure, up to servo-actuated valve body 27 spool breach 28 is closed.Motor load is big more, and system works pressure is high more, and two anchor shape slide blockss are drawn close closely more to stator 6 centers, and blade stretches out long more, and swept volume is big more, because pressure and discharge capacity increase simultaneously, the motor output torque just increases fast, but rotating speed reduces.In contrast, load alleviates, and system pressure reduces, balance spring top lower valve core 34, spool breach 28 communicates with oil input channel 9, and pressure oil flows into variable chambeies 7 through oil duct 10, moves outside fast at the differential pressure action shape slide blocks 4 that casts anchor, blade is forced to withdrawal, and motor displacement reduces, but rotating speed increases.Back oil road is closed oil return and is obstructed during braking, the pressure that acts on the spool through back oil road 11 is identical with balance spring elastic force direction, therefore spool 34 keeps pressured state always, and breach 28 keeps always and oil input channel 9 communicates makes motor remain on displacement to produce optimum braking effect.

The present invention is used for the wheel-side motor of hydraulic transmission vehicle, can cancel original clutch, gearbox, transmission shaft and preceding rear axle differential, cancels braking system conventional on the original vehicle simultaneously, makes vehicle structure simple, and is sturdy and durable.Can directly make three effects, four effects, multiaction shell-rotating type variable vane motor according to the working principle of shell-rotating double-action variable vane motor, the multiaction motor applications is on equipment such as military equipment, mine vehicle, engineering machinery, and be equally applicable to mine equipment, ship machinery and all need on the machinery of transmission and speed change, also can be used as the multiaction vane pump in case of necessity and use.

Claims

1, a kind of shell-rotating double-action variable vane motor, it includes stator, transcapsidation, blade, producing the blade that promotes torque is contained in the radial groove of rotary shell inner circumference, it is characterized in that: stator (6) is an oval entity, on the symmetrical position of stator (6) center line, be milled with two broad grooves, two anchor shape slide blockss (4) are contained in two grooves respectively and grooved seal composition variable oil pocket (7), anchor shape slide blocks (4) but folding move, the central authorities of two anchor shape slide blockss (4) respectively are equipped with and change the servo valve (27) that motor displacement is used, stator (6) center hole is milled with one section spline housing on stationary axle (33), and stator (6) can be done the swing of suitable angle on stationary axle (33).

2, shell-rotating double-action variable vane motor according to claim 1, it is characterized in that: servo valve is made up of valve body (27), spool (34), high pressure sealing gasket ring (29), low pressure seal gasket ring (30) and balance spring (31), high pressure sealing gasket ring (29) and low pressure seal gasket ring (30) are clipped in the two ends of valve body (27) and are enclosed within on the spool (34), balance spring (31) is contained in the variable oil pocket, the one end is enclosed within on the spool (34), spool (34) center is drilled with and is communicated with oil duct (10), and it is milled with spool breach (28) on every side.

3, shell-rotating double-action variable vane motor according to claim 1 is characterized in that: the both sides of intermediate stator (6) groove are milled with the breach (5,8) that holds the anchor fluke that connects together with slide blocks (4) respectively.

4, shell-rotating double-action variable vane motor according to claim 1 is characterized in that: anchor shape slide blocks (4) and combining of anchor fluke (35,36) can be fabricated also can be all-in-one-piece.