CN86103246A

CN86103246A - Oil hydraulic motor

Info

Publication number: CN86103246A
Application number: CN198686103246A
Authority: CN
Inventors: 罗伯特·威廉·里格比; 艾伦·罗伯特·伯恩斯
Original assignee: Tennyson Co Ltd
Current assignee: Tennyson Co Ltd
Priority date: 1985-05-08
Filing date: 1986-05-08
Publication date: 1987-01-07
Also published as: WO1986006787A1; BR8606658A; JPS62502834A; EP0223788A4; EP0223788A1; ZA863426B

Abstract

One oil hydraulic motor has a hollow casing (10) that is driven end shield (13) capping by anti-drive end cover (12) and.A plurality of radial grooves or recess are formed on and constitute the working solution cylinder pressure in the casing inner surface.End shield (12,13) has bearing (16,17), the driving element (15) in the chamber that the bearing support is defined by casing.Driving element has three trilobal cross rotors (22), and when driving element and rotor rotation (in the opposite direction), rotor blade (23) meshes each oil hydraulic cylinder successively, thereby forms a Seal cage, and charging fluid is admitted in this chamber aspect arrow A.Remaining fluid is discharged along the arrow C direction, when for example motor is as shaft bottom probing motor, drains into drill bit.

Description

Oil hydraulic motor

The present invention relates to oil hydraulic motor, this motor flow in the flowing of rotating part at pressure fluid and obtains output power.

The present invention will narrate about a kind of oil hydraulic motor, and this kind motor can be installed in the lower end of the drill set of a length, and as shaft bottom probing motor, and by the driving of supercharging suspension, this suspension usually lubricates and cools off as drill bit.Yet, much less, the invention is not restricted to also can be used as one high torque (HT)/low-rotate speed motor as motor (even having or do not have less modification), be used for general purpose fluidstatic transmission system.

Various forms of shaft bottoms probing motors are well-known, wherein the most familiar and extensive use be turbodrill.According to the meaning of name, turbodrill is based on sludge as on the multi-stage turbine principle of working fluid.

Other positive displacement hydraulic motor commercial use or also at the experimental stage (positive displacement hydraulic motors) comprise centrifugal blade profile rotor (as single pump form) and elastic fin type.Many shaft bottoms turbodrill or positive displacement motor, in a sizable axial length scope, descending gradually from the pressure of moving fluid obtains its high torque (HT)/low-rotate speed characteristic.

The object of the present invention is to provide a kind of oil hydraulic motor that in quite short axial dimension scope, has high torque (HT)/low-rotate speed characteristic, it is become be particularly suitable for directional drilling, and light and firm structure is suitable for probing or mine application.

According to the invention provides a kind of oil hydraulic motor, this kind motor comprises: a casing that defines a chamber, this chamber have a plurality of oil hydraulic cylinders that are formed on wherein; Being suitable in the chamber, be coupled to the driving element of an output shaft; One is installed on the blade-carrying driving element, is suitable for the leafy rotor with the collaborative work sequentially of several oil hydraulic cylinders; One passage is arranged in every blade, and during through each blade preposition, the fluid that puts on internal rotor through passage is to aim at oil hydraulic cylinder, thereby blade is subjected to power from oil hydraulic cylinder, and the masterpiece that produces like this is that torque is sent to driving element.

Three rotors are preferably arranged, respectively have three blades and ten oil hydraulic cylinders, and principle can similarly be applied to a triple-spool/three blades, six, eight or nine hydraulic cylinder structures.

Motor can staged assembling, thereby each distinctive (PCC) power or motor can connect into delegation with one or in addition more assembly, to increase final output shaft power.

In an optimised form of the present invention, working fluid is a supercharging mud suspension, is used as the landwaste of wash boring, and is used as the lubricated and cooling at the drill bit of drill set end.Working fluid is successively by at different levels, and the part of total discharge is to be extracted out in each intergrade, so that the motion power of each level assembly to be provided.In force, motor sub-assembly be hydraulic pressure in parallel and machinery with the series connection mode turn round.

For the present invention being easier to understand and implementing, can carry out with reference to accompanying drawing, wherein:

Fig. 1 is a sectional drawing of single-stage oil hydraulic motor according to an embodiment of the invention,

Fig. 2 is suitable for being connected to the second level of the first order that is shown in Fig. 1 or a sectional drawing of the second rank oil hydraulic motor,

Fig. 3 is the summary image of an outlet device (porting arrangement), relies on this device fluid to be sent to the oil hydraulic cylinder of the oil hydraulic motor that is shown in Fig. 1 and discharges from oil hydraulic cylinder,

Fig. 4 is the summary image of an outlet device, relies on this device fluid to be sent to the oil hydraulic cylinder of the oil hydraulic motor that is shown in Fig. 2 and discharges from oil hydraulic cylinder,

Fig. 5 is the exploded view of motor middle body shown in Figure 1, and

Fig. 6 is a schematic representation of shaft bottom drill set, motor and drill bit device.

Oil hydraulic motor shown in Fig. 1 and Fig. 2 respectively comprises a hollow casing 10, and by an

anti-drive end cover

12 and 13 cappings of driving end shield, all covers are fixed in position with bolt 11.A plurality of radial grooves or recess 14 are formed in the surface, inside of casing, constitute the working solution cylinder pressure (see figure 3) of motor, and first and second grades is similar substantially, and narration together in due course.

End shield

12 and 13 has taper roller bearing 16,17, a driving element 15 in the chamber that vicarious support is defined by casing 10.Oil or fat are sealed in the inside of

bearing

16,17 by polymeric seal plate 18 and plate 18a, the sealing plate works facing to the face of the mechanical parts that link to each other with driving element or rotor 15, and plate 18a is facing to the minor axis 24(Fig. 2 that invests anti-drive end) with 24a(Fig. 1) and invest drive end minor axis 26(Fig. 2) and 26a(Fig. 1) locking ring 20 seal.As shown in Figure 2, sealing load is to be provided by pressure spring 40,41, and this spring works facing to

plate

18 and 18a respectively.

Driving element 15(sees Fig. 2) comprise two parts 19,19a that flange is arranged, they are by three equal intervals, and bolt circle, hollow 21 links together them.Each bolt 21 is equipped with a rotor 22, and rotor has three blades 23 that can freely rotate on bolt.The driving element of second level motor has three dispatch tube 50(and sees Fig. 4 between flange components 19,19a), and the driving element of the first order has three rotor torque bolt 51(and sees Fig. 3 between flange components 19,19a).

As seen, when driving element 15 and rotor 22 rotations (in the opposite direction), rotor blade 23 meshes oil hydraulic cylinder 14 successively, thereby forms a Seal cage from Fig. 3 and Fig. 4, and charging fluid is admitted in this chamber.

Fluid is sent to oil hydraulic cylinder and the outlet device of discharging from oil hydraulic cylinder and the method for transmission, is illustrated in Fig. 3 for the first order motor of Fig. 1, and is illustrated in Fig. 4 for the second level motor of Fig. 2.High pressure (i.e. input) is indicated by solid line by fluid, and low pressure (promptly discharging) fluid is indicated by dotted line.Anti-drive end parts 19 have a hollow stub shafts 24(Fig. 2), 24a(Fig. 1) and a charging fluid passage 25(Fig. 2), 25a(Fig. 1), driving fluid is introduced in the motor of Fig. 1 and Fig. 2 with the direction of arrow A through passage.

Drive end flange components 19a has a hollow stub shafts 26(Fig. 2), minor axis has a passage 27(Fig. 2), the part of supercharging driving fluid with regard to the motor of Fig. 2, is discharged to the motor of Fig. 1 through passage with the direction of arrow B.The adpting flange 28 of a ring-type is to be used for linking first and second grades, and the drive end minor axis 26 of a unit holds the anti-drive end minor axis 24a of next unit, seals 29 between the two.

Each rotor bolt 21 has an outlet slot (port slot) 31, and this groove is overlapping with three corresponding outlet (port) 32 in rotor 22 successively.Rotor outlet 32 provides a passage to enter hydraulic cylinder cavity 14 as the fluid under the pressure by each blade 23, by providing power stroke from the oil hydraulic cylinder reinforcing in blade.

Rotor outlet 32 is open in the last dead center of each blade 23 in the oil hydraulic cylinder 14, and the closed point that separates in blade from oil hydraulic cylinder.The power that produces on the rotor 21 is sent to driving element 15 and the final output shaft (not shown) of arrival motor as torque.

Between on-stream period, the casing of motor is that pressure is the fluid of head pressure abrim.When a blade 23 entered oil hydraulic cylinder 14, fluid was moved by an axial rectangle ditch 33 on each blade 23 periphery, and this makes is broken in the sealing of that section of work cycle.In multi-stage motor, discharge fluid by the passage 35 in passage 34 in the anti-drive end plate 12 and the driving end plate 13, emit from the first order with the direction of arrow D.If motor is final level or one-level is only arranged that as the situation of Fig. 1 motor, all pressure fluids convert rotational energy to through driving element 15.Remaining fluid is arranged into casing 10, and passes through passage 27a therefrom to drill bit (arrow C among Fig. 1 and Fig. 3).

Fig. 6 shows the of the present invention a kind of oil hydraulic motor as shaft bottom probing motor, and first motor unit 60 directly uses bolton in the lower flange of the drill set of delivery pipe 61 among the figure, and this delivery pipe provides the input accommodating fluid from supply line 62.The outer shaft of final motor unit is directly or through an intermediate connector to be connected to drill bit 64.

Like this, can see oil hydraulic motor, will supply to rotary component at the fluid of pressure current downflow and obtain its output power.

Although motor is designed for being put in the shaft bottom probing motor of deep-well in principle, it also can be used as a high torque/low-rotate speed motor applications in the transmission system of the hydrostatics of (with suitable modification) general purposes.

Motor can be suitable for " step by step " assembling easily, thereby each individual motor as mentioned above can connect into delegation with one or other more motor, to increase final output shaft power.

When as a probing motor, be the work fluid with supercharging mud suspension traditionally, be used for flushing, lubrication and cooling one drill bit, this fluid is successively by at different levels. The part of total flow is extracted out in each motor level, to be provided for the motion power of driving element. After fluid was discharged from the work traverse, fluid was emitted from motor chassis, so that flushing, the lubrication and cooling as the drill bit that invests motor output shaft to be provided.

Do not depart from scope of the present invention and profile, can make in detail various modifications to design and structure. For example, when being applicable to general purposes, the hydraulic pressure motor is not to be subjected to put down the strict diameter restrictions of shaft bottom probing motor, and the entrance and exit that is used for like this work fluid (for example hydraulic oil) connects, and can be arranged in the plate or foundry goods of anti-drive end of motor.

Claims

1, a kind of oil hydraulic motor is characterized in that comprising: a casing that defines a chamber, this chamber have a plurality of oil hydraulic cylinders that are formed on wherein; A driver element is suitable for being coupled to an output shaft in the chamber; One Multiblade rotor is installed on the blade-carrying driving element, is suitable for and the collaborative work sequentially of several oil hydraulic cylinders; One passage is arranged in each blade, and during each blade preposition, the fluid that puts on internal rotor through passage is to aim at oil hydraulic cylinder, thereby blade is subjected to power from oil hydraulic cylinder, and the masterpiece that produces like this is that torque is sent to driving element.

2, by the motor of claim 1 regulation, it is characterized in that wherein driver element comprises that a pair of compartment of terrain separates flange apparatus, they are linked together by a plurality of hollow bolts, and the Multiblade rotor is installed on each hollow bolt.

3, the motor of stipulating by claim 2, it is characterized in that one of them said flange apparatus is a drive end flange apparatus, and another is the anti-drive end flange apparatus, and the minor axis of anti-drive end flange apparatus wherein with a hollow, driving fluid is introduced the motor the inside through this minor axis, and the drive end flange apparatus is to be connected to output shaft.

4, the motor of stipulating by claim 3, it is characterized in that wherein motor is a multi-stage motor, wherein the drive end flange apparatus of motor is suitable for being coupled to the anti-drive end flange apparatus of a similar oil hydraulic motor, and motor has a hollow stub shafts, and driving fluid is arranged into said similar oil hydraulic motor through this minor axis.

5, by the motor of claim 3 regulation, it is characterized in that wherein the drive end flange has a hollow stub shafts, all are discharged fluid and are directed to a drill bit through this minor axis.

6, the motor of stipulating by claim 3, it is characterized in that wherein each rotor hollow bolt has an outlet, this outlet successively with corresponding blade in passage overlapping, thereby working fluid is to enter and enter blade and from there to the oil hydraulic cylinder of correspondence through the outlet the bolt towards hollow bolt from the anti-drive end flange.

7,, it is characterized in that wherein each blade has an axial ditch to break blade and the sealing between the two of its oil hydraulic cylinder at that section of blade movement on its periphery by the motor of claim 6 regulation.

8, a kind of oil hydraulic motor combination, it is characterized in that comprising first motor of stipulating by claim 1 substantially, with one substantially by second motor of claim 1 regulation, and working fluid each motor of flowing through successively is extracted out in the some of each motor place fluid.