CN1050431A - Combined flexible connecting shaft resisting tension and compression - Google Patents
Combined flexible connecting shaft resisting tension and compression Download PDFInfo
- Publication number
- CN1050431A CN1050431A CN 90108925 CN90108925A CN1050431A CN 1050431 A CN1050431 A CN 1050431A CN 90108925 CN90108925 CN 90108925 CN 90108925 A CN90108925 A CN 90108925A CN 1050431 A CN1050431 A CN 1050431A
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- China
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- axle
- spring
- supporting ring
- coupling shaft
- billiard table
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The present invention be a kind of can transmit more high-power, bear pressure, draw and reverse symphyogenetic flexible drive axle, be mainly used in the single screw motor and the transmission shaft that are acted in connection petroleum industry and the geologic prospecting drillng operation, the present invention cooperates with transmitting torque by pipe spring, supporting ring and outer sleeve and produces flexible.Bear pressure loading by axle, billiard table, ball seat, spherical joint cooperation.By axle, spherical joint, ball ring, nut combinations are born tensile load, can change the planetary motion of single screw motor rotor into the dead axle rotation of transmission shaft and drill bit effectively.
Description
The present invention a kind ofly can transmit more high-powerly, bears pressure, draws and reverse symphyogenetic flexible drive axle, is mainly used in to connect employed single screw motor and transmission shaft in petroleum industry and the geologic prospecting drillng operation.
The cardan shaft of existing helicoid hydraulic motor inside, following three classes are generally arranged: (one) lobe shape cardan shaft: as the Kyna drill cardan shaft of U.S. Smith International company, two end connectors system cuts into three lobe shape structures by steel pipe through special process unit, make chimeric mutually linking portion produce angular difference by the cutting slit, by lobe tooth transmitting torque with carry pulling force when boring, transmit pressure by the locking ball at joint center.One of shortcoming of this cardan shaft is that the less bearing capacity of lobe tooth intensity is lower, and the normal force when transmitting Operating torque on the lobe tooth produces bigger bending moment in lobe tooth root portion, promptly turns to bending and comes transmitted load reversing; And the point of action of normal force is relevant with the wearing and tearing of centralized positioning steel ball with numerical value, can cause contact condition to worsen when worn steel ball, and the normal force point of action is moved down, it is big that numerical value becomes rapidly, causes disconnected lobe malicious event, and influence is crept into when serious, be forced to pull out of hole, this type of example once took place at the scene; Two of its shortcoming is outside this cardan shaft two ends lobe shape part the rubber that fills lubricating grease in two to be housed to protect capsule; in order to the protection locking ball in order to avoid contact mud and apply lubricated reducing wear; but find in the practice that this capsule usually is the most flimsy part; the capsule that bears the high frequency alternating stress is broken into fragment under the impact of high speed mud; cause screw drill transmission shaft shunting mud liquid road to stop up; thereby burn out a bearing; cause motor bypass valve hydrophthalmia congestion affects regular event; cause the bit port congestion affects to creep into, or the like.These have formed the outstanding disadvantage of this cardan shaft; Three of its shortcoming is technological equipments of lobe shape split requirement special use, invests greatlyyer, and cost is higher, and because of adopting the flame cutting, requires heat treatment process also complicated.In a word, above-mentioned accident in use once took place in the helicoid hydraulic motor of China's import, and influence is produced.(2) ball tooth cardan shaft: as the helicoid hydraulic motor that the Soviet Union makes, the joint part at its two ends system adopts spherical gear to connect, and one of its shortcoming is the processing technology complexity, the precision prescribed height, thereby cost is higher; Two of its shortcoming is that intensity is lower; Three of its shortcoming is poor to the adaptive capacity of environment, when it is worked in the mud of drilling tool inside, very easily causes wear-out failure; If improve purification requirement to mud system, can improve drilling cost again, and penetration and promotion is restricted, mention the weak link that this cardan shaft is a helicoid hydraulic motor in the relevant document of the Soviet Union several times.(3) polished rod flexible shaft: as the cardan shaft of the homemade helicoid hydraulic motor of the Soviet Union and China, its shortcoming is that length is excessive.The principle of this cardan shaft is to rotate by the dead axle that the flexibility of slender axles comes the planetary motion of motor rotor to be converted into transmission shaft, but because of receiving bigger moment of torsion (work moment), pressure and pulling force, the minimum diameter that has limited this axle again can not be too small, under certain minimum diameter,, so just caused the helicoid hydraulic motor axial length obviously to increase for the desired flexibility of assurance transmission only adds length.Other has two kinds of transmission equipments, as helical spring or drain cleaner and automobile cardan shaft, the former compares the difference part and is not to be that planetary motion is become dead axle rotates with the present invention, do not bear bigger load and transmit more high-power, only be to realize non-coaxial flexible transmission, bear slight moment of torsion; The latter compares the difference part and is only to transmit non-coaxial rotation and moment with the present invention, employing be the crosshead gimbal structure.
The dead axle that the objective of the invention is to provide a kind of planetary motion motor rotor to change transmission shaft and drill bit into rotates, simultaneously the motor rotor transmission of torque is crept into to drill bit, bear and transmit rotor axial pressure that motor produces in the course of the work and the combined flexible connecting shaft resisting tension and compression of putting forward the weight that make up the bottom when boring.
The object of the present invention is achieved like this: it is by formations such as axle 1, spring (pipe spring) 2, steel ball, outer sleeve 3, supporting ring 4, billiard table 5, ball seat 6, spherical joint 7, connecting rod 10 and fastening pieces.Pipe spring 2, outer sleeve 3 and supporting ring 4 combinations are established outer sleeve 3 on the pipe spring 2, divide into supporting ring 4.Axle 1, billiard table 5, ball seat 6 and spherical joint 7 combinations are born and the axial pressure when transmitting working rotor.The deadweight (pulling force) of proposing bottom combination when boring is born in combinations such as axle 1, spherical joint 7, ball ring 8 and nut 9.
Supporting ring 4 outer side surfaces have the flange of 0.5mm.The lead angle of pipe spring is less than 7 °, and the number of turns is 3-8, and the best is 5, and is left-handed.The external diameter of supporting ring 4 has slight magnitude of interference, itself and the slight interference fit of pipe spring 2 inwalls.Adopt 8 supporting rings 4, its total thickness is slightly larger than the spring section length of pipe spring.The hardness of supporting ring 4 is less than pipe spring hardness.Axle 1 has public affairs, two kinds of screw threads of English.The centre of sphere of billiard table 5 is positioned on the pipe spring 2 mid point axis.The big end sphere of spherical joint 7 is concentric with billiard table 5, and billiard table joint 7 diameter of bores are not collided with the axle pull bar.
The present invention utilizes spring to become bent mechanical characteristic easily to design, and it is flexible that combined type flexible connection axle is had, in order to throw of eccentric and the motion angular difference of compensation rotor because of producing between planetary motion and drive shaft axis, the influence of shock absorbing load simultaneously.
Advantage of the present invention:
1. bearing capacity height, long working life.
2. processing technology is simple, does not need special technological equipment, and the oil field tubulars substation can process, thereby cost low (be about U.S.'s lobe shape cardan shaft 1/9).
3. length is short, thereby can make the helicoid hydraulic motor shorten length, has improved the deflecting of drilling tool and has turned round azimuthal capability, can satisfy the requirement that big disused well and horizontal well creep into.
4. have dismoutability and versatility,, can be respectively applied for homemade helicoid hydraulic motor of connection and import helicoid hydraulic motor because of its axle that has public affairs, two kinds of different screw threads of English.Can be the import helicoid hydraulic motor universal connecting shaft spare part is provided, the restorer ability to function can lack import, saves foreign exchange, produces high economic benefit.
The concrete structure of invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the sectional drawing of the combined flexible connecting shaft resisting tension and compression of proposition according to the present invention.
It is flexible that Fig. 2 is that flexible connection axle of the present invention has, and can become the principle schematic that dead axle rotates to planetary motion.
Fig. 3 is the structural drawing of supporting ring 4.
Fig. 4 is the structural drawing of pipe spring 2.
Describe detail and the working condition that proposes according to the present invention in detail below in conjunction with Fig. 1～4.
This coupling shaft comprises axle 1 main body, and pipe spring 2 is to be got on the bus at lathe by pipe to make, and establishes outer sleeve 3 on it, divide into supporting ring 4, the 0.5mm flange of supporting ring outer side surface is that supporting ring is in contact with one another by flange, thereby does not cause the wearing and tearing at external cylindrical surface edge when the pipe spring is crooked.Supporting ring 4 and the slight interference fit of pipe spring 2 inwalls produce initial assembling pre-tensile stress; Supporting ring 4 external diameters have slight magnitude of interference, have the running-in of counteracting wearing and tearing, prolong the effect of operating life.Supporting ring 4 hardness, are promptly handled supporting ring 4 less than pipe spring hardness through heat treatment as easily damaged parts, change supporting ring when the gap of pipe spring 2 and supporting ring 4 reaches predetermined value.Adopt eight supporting rings 4, its total thickness guarantees to be slightly larger than the spring section length of pipe spring.Axle 1, billiard table 5, ball seat 6 and spherical joint 7 combinations are born and the axial pressure when transmitting working rotor.The deadweight (pulling force) of proposing bottom combination when boring is born in combinations such as axle 1, spherical joint 7, ball ring 8 and nut 9.Axle has public affairs, two kinds of screw threads of English, all the other structures all with, can assemble different axles as required, connecting import drilling tool, homemade drilling tool or to load in mixture drilling tool, thereby make flexible connection axle of the present invention have versatility.Billiard table 5 on the axle 1 and the ball seat 6 on the spherical joint 7 are except that support pressure, another effect is to cause the pure flexure of spring distortion, the centre of sphere of billiard table 5 is positioned on the pipe spring 2 mid point axis, also restricted with prevent to manage spring 2 issuable corresponding deformation under axial force and centrifugal inertia force effect.The big end sphere of spherical joint 7 is concentric with billiard table 5.Spherical joint 7 diameter of bore sizes guarantee not collide with the axle pull bar.
Helicoid hydraulic motor in the course of the work, its motor rotor is done planetary motion because of hydraulic action, transmission shaft then rotates in fixed axis around the drilling tool body axis.Rotor axis and transmission shafts have an eccentric e in the heart, as shown in Figure 2.In Fig. 1, the pipe spring satisfies above-mentioned eccentric e because of its flexible generation bending deflection.Because the centre of sphere of billiard table 5, ball seat 6 even parts is positioned in the middle of the spring, thus spring be deformed into the pure flexure distortion, thereby each cross section equal strength of assurance spring silk.
Under right-handed moment M effect, spring silk (left-handed) dwindles and is pressed on the interior support ring.Supporting ring hinders to contract in the spring silk and produces the Daqu stress in the bar.The spring silk produces under the supporting ring supporting and stretches, and is uniform tensile stress in the spring silk cross section, thereby turns to stretching reversing, and has brought into play the potentiality of material, has improved bearing capacity.
Spring expanded the Daqu rod bending stress that restriction produces outward when outer sleeve 3 was used for preventing idol commentaries on classics counter-rotating.This flexible shaft behind the ring of lagging can bear torque reaction (or spin square) in a small amount.
Rotor axial pressure is by axle 1, billiard table 5 and ball seat 6 even parts, and spherical joint 7, screw thread are delivered on the connecting rod 10, guarantees that spring itself does not bear axial pressure.Billiard table and ball seat idol part is and transmit outside the axial pressure except that the pure flexure distortion that guarantees spring, also restricted with prevent the additional deformation that spring produces under centrifugal action.When need changing, this even part should change in pairs.
Axle 1, spherical joint 7, face pad 8, nut 9 assemblies bear disassembly process, carry the pulling force and the following pulling force that produces of other fortuitous events that produce in the brill process, are elongated with spring free.Cotter pin B
2With so that nut 9 location.
Connecting rod 10 is used for connecting two ends symmetric component and transmitted load.
Cock screw B
1Effect the phenomenon that releases appears when being to prevent to dismantle.Rubber washer 11 and plug screw B
3Be used to seal pouring orifice, in case mud enters.
Claims (9)
1, a kind ofly is used for connecting petroleum industry and geology is surveyed the control single screw motor that drillng operation acted on and the combined flexible connecting shaft resisting tension and compression of transmission shaft, it is made of axle 1, spring 2 and steel ball, it is characterized in that also being provided with outer sleeve 3, supporting ring 4, billiard table 5, ball seat 6, spherical joint 7, connecting rod 10 and fastening piece etc.:
(1) pipe spring 2, outer sleeve 3 and supporting ring 4 combinations are established outer sleeve 3 on the pipe spring 2, divide into supporting ring 4;
(2) axle 1, billiard table 5, ball seat 6 and spherical joint 7 combinations are born and the axial pressure when transmitting working rotor;
(3) deadweight (pulling force) of proposing bottom combination when boring is born in combinations such as axle 1, spherical joint 7, ball ring 8 and nut 9.
2, coupling shaft as claimed in claim 1 is characterized in that supporting ring 4 outer side surfaces have the flange of 0.5mm.
3, coupling shaft as claimed in claim 1, the lead angle that it is characterized in that managing spring 2 is less than 7 °, and the number of turns is 3-8, and is left-handed.
4, coupling shaft as claimed in claim 1, the number of turns the best that it is characterized in that managing spring 2 is 5.
5, coupling shaft as claimed in claim 1 is characterized in that the external diameter of supporting ring 4 has slight magnitude of interference, itself and the slight interference fit of pipe spring 2 inwalls; Adopt 8 supporting rings 4, its total thickness is slightly larger than the spring section length of pipe spring.
6, coupling shaft as claimed in claim 1, the hardness that it is characterized in that supporting ring 4 is less than pipe spring hardness.
7, coupling shaft as claimed in claim 1 is characterized in that axle 1 has public affairs, two kinds of screw threads of English.
8, coupling shaft as claimed in claim 1 is characterized in that the centre of sphere of billiard table 5 is positioned on the pipe spring 2 mid point axis.
9, coupling shaft as claimed in claim 1 is characterized in that the big end sphere of spherical joint 7 is concentric with billiard table 5, and billiard table joint 7 diameter of bores are not collided with the axle pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108925 CN1018012B (en) | 1990-11-12 | 1990-11-12 | Combined flexible connecting shaft resisting tension and compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108925 CN1018012B (en) | 1990-11-12 | 1990-11-12 | Combined flexible connecting shaft resisting tension and compression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050431A true CN1050431A (en) | 1991-04-03 |
| CN1018012B CN1018012B (en) | 1992-08-26 |
Family
ID=4881202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108925 Expired CN1018012B (en) | 1990-11-12 | 1990-11-12 | Combined flexible connecting shaft resisting tension and compression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018012B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254697A (en) * | 2012-01-06 | 2014-12-31 | 贝特彻工业公司 | Flex shaft - drive motor connection for power operated rotary knife |
| CN113785124A (en) * | 2019-06-11 | 2021-12-10 | 兵神装备株式会社 | Connecting shaft and uniaxial eccentric screw pump |
-
1990
- 1990-11-12 CN CN 90108925 patent/CN1018012B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254697A (en) * | 2012-01-06 | 2014-12-31 | 贝特彻工业公司 | Flex shaft - drive motor connection for power operated rotary knife |
| CN104254697B (en) * | 2012-01-06 | 2017-03-08 | 贝特彻工业公司 | Flexure shaft drive motor for power operation swivel knife connects |
| CN113785124A (en) * | 2019-06-11 | 2021-12-10 | 兵神装备株式会社 | Connecting shaft and uniaxial eccentric screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1018012B (en) | 1992-08-26 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
International patent classification (main classification): F16C1/08 |