CN204782821U - Universal shaft type screw rod drilling tool of spline - Google Patents

Universal shaft type screw rod drilling tool of spline Download PDF

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Publication number
CN204782821U
CN204782821U CN201520540442.5U CN201520540442U CN204782821U CN 204782821 U CN204782821 U CN 204782821U CN 201520540442 U CN201520540442 U CN 201520540442U CN 204782821 U CN204782821 U CN 204782821U
Authority
CN
China
Prior art keywords
connecting axle
gear ring
shaft
endoporus
rotor connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201520540442.5U
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Chinese (zh)
Inventor
魏岳
袁雷
王凡
于卫东
王得宸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
Original Assignee
DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by DEZHOU UNITED PETROLEUM MACHINERY Co Ltd filed Critical DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
Priority to CN201520540442.5U priority Critical patent/CN204782821U/en
Application granted granted Critical
Publication of CN204782821U publication Critical patent/CN204782821U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Universal shaft type screw rod drilling tool of spline is including the cardan shaft, characterized by: the cardan shaft include that the rotor connects, the transmission shaft connects, the connecting axle, the rotor connects the lower extreme, the transmission shaft connects the upper end and respectively establishes the hole along the axial, all be equipped with the short interior gear structure that gradually bursts at the seams in two holes to cooperate with the ring gear respectively, the outer gear structure modification coefficient of ring gear is less than the short modification coefficient who gradually bursts at the seams interior gear structure, the addendum face of ring gear, bottom land are the arc curved surface that the middle part bloated in the breadth of tooth direction, and are parallel to each other, in the breadth of tooth direction, by the centre to both ends tooth thickness attenuate gradually, two ring gears are connected through standard involute spline with connecting axle both ends respectively, respectively through the threaded connection bulb on two terminal surfaces of connecting axle, and the cooperation of interior concave spherical surface and the same centre of sphere of bulb and ball seat, the centre of sphere lies in the ring gear axis, two ball seat fixed mounting are in hole that the rotor connects, hole that the transmission shaft connects. This cardan shaft simple structure, longe -lived, easy maintenance adapt to the wide range that the angle changes.

Description

The universal shaft type helicoid hydraulic motor of spline
Technical field
The utility model relates to mud motor technical field, specifically a kind of helicoid hydraulic motor.
Background technology
Helicoid hydraulic motor is widely used a kind of mud motor in current drilling engineering, be widely used in straight well, directional well, horizontal well, from drillng operations such as the crossing constructions of formula well, well workover, various pipeline.Helicoid hydraulic motor is made up of by-pass valve assembly, motor assembly, universal drive shaft assembly, driving-shaft assembly four major part.
Because motor rotor does planetary motion in the stator, need the fixed-axis rotation by universal drive shaft, planetary motion being converted into power transmission shaft; When helicoid hydraulic motor is applied in directional well, due to the needs of deflecting, articulated joint for screw drilling rod shell has the bent angle of different angles, so universal drive shaft also needs to compensate the bent angle between motor and power transmission shaft.The simultaneously universal drive shaft power transmission that also motor will be produced on power transmission shaft, to drive drill bit rotational and to produce moment of torsion.
The circular cone of the similar handstand of movement locus of universal drive shaft, the power be subject to comprises moment of torsion, axial force and lateral force.Universal drive shaft becomes the part the most easily destroyed in helicoid hydraulic motor.Now general universal drive shaft is petal universal shaft.Petal universal shaft thick-walled pipe is radially cut into intermeshing two points and the petal body do not disconnected, the line of cut closed forms certain interval, the size in gap depends on the size of camber scope, because two lobe intracoelomic cavities bear pressure by ball seat and spheroid, lobe body structure bears the moment of torsion of drilling tool simultaneously.Due to its open architecture, in use the wearing and tearing of lobe seam are very fast, and when gap increases to certain limit, under the effect of drilling tool moment of torsion and pulling force, two lobe bodies are very easily thrown off, and will inevitably cause drilling failure like this.Petal universal shaft is operationally also subject to washing away of high-pressure slurry, and the life-span is very short.Petal universal shaft has been not suitable with the needs of current drilling well at present thus.
Utility model content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of spline universal shaft type helicoid hydraulic motor, and structure is simple, the life-span is long, scope that is easy to maintenance, that can adapt to angle change is wide.
In order to solve the problem, the utility model by the following technical solutions: the universal shaft type helicoid hydraulic motor of spline, comprises universal drive shaft; It is characterized in that: described universal drive shaft comprises the rotor connection of power input, the shaft adapter of outputting power, also comprises connecting axle;
The lower end edge of described rotor connection is axially provided with endoporus; The upper end edge of shaft adapter is axially also provided with endoporus; Short involute internal gear structure is equipped with in the endoporus of rotor connection, the endoporus of shaft adapter;
Short involute internal gear structure described in two coordinates with a gear ring respectively;
Described gear ring is external gear structure;
The modification coefficient of described gear ring is less than the modification coefficient of the described inner gear structure of cooperation;
The crest top land of described gear ring, root face are the arc-shaped curved surface that on facewidth direction, middle part bloats, and crest top land, root face are parallel; On facewidth direction, thinning gradually to the two ends transverse tooth thickness in facewidth direction by the centre in facewidth direction; So just can compensate the eccentric motion of helicoid hydraulic motor rotor and the bent angle of universal drive shaft;
Two described gear rings pass through standard involute spline joint with the two ends of connecting axle respectively, and described connecting axle and two gear rings are Split type structures, when after gear ring wearing and tearing, only can change gear ring, and easy to maintenance, processing is simple, and maintenance cost is low; Also be conducive to gear ring to make with different materials respectively from connecting axle, save material and can reach better performance again;
Respectively by the bulb that has been threaded on two end faces of connecting axle, step on the end face of bulb and connecting axle forms the axial location to gear ring, the outer convex spherical of bulb and the indent mating spherical surfaces of ball seat, the outer convex spherical of bulb and the same centre of sphere of interior concave spherical surface of ball seat, and the centre of sphere is positioned on the axis of gear ring; Can ensure that gear ring swings and rotate collaborative mutually can not interference with bulb;
In the endoporus of the fixing respectively endoporus being arranged on rotor connection of two ball seats, shaft adapter.
As further improvement of the utility model, between one end of connecting axle and rotor connection, between the other end of connecting axle and shaft adapter, be respectively arranged with one group of hermetically-sealed construction, prevent drilling fluid from entering spline universal drive shaft inner; Often organize described hermetically-sealed construction and comprise sealing shroud, briquetting, compacting ring, clip;
One end of briquetting has the V-type annular groove vertically in the middle part of connecting axle, and the briquetting in two groups of hermetically-sealed constructions is also pressed on rotor connection, shaft adapter by compacting ring by the V-type annular groove of one end of sealing shroud press-in briquetting simultaneously respectively; Compacting ring in two groups of hermetically-sealed constructions is connected with rotor connection, power transmission shaft street corner respectively by helicitic texture;
Briquetting is nested with on connecting axle, and the aperture of the endoporus of briquetting is less than the external diameter of gear ring, can also form spacing like this to gear ring; Gap is provided with between briquetting and gear ring end face;
In two groups of hermetically-sealed constructions, the other end of sealing shroud is fixed on connecting axle respectively by described clip.
As further improvement of the utility model, described rotor connection and shaft adapter all have oil filler point.In oil filler point, inject lubricating grease after assembling, ensure that gear ring and internal tooth, bulb and ball seat always work in and lubricate in environment.
As further improvement of the utility model, the flank of tooth in described gear ring and rotor connection, shaft adapter endoporus adopts carburizing or Nitrizing Treatment, not only more wear-resisting, can also transmit more high pulling torque.
As further improvement of the utility model, described sealing shroud adopts oil resistant rubber to make.
The beneficial effects of the utility model are:
1, its universal drive shaft transmitting torque is large.In universal drive shaft of the present utility model, drive disk assembly is large module gear structure, and multiple tooth engagement can transmitting large torque.
2, long working life.In the utility model, universal drive shaft is sealed structure, and each drive disk assembly works under the environment being full of lubricating grease; Each contact surface, all through Surface hardening treatment, weares and teares little under identical applying working condition.
3, gear ring and connecting axle are two body structures, and when only changing the component such as gear ring after tooth surface abrasion, structure is simple, and easy to maintenance, maintenance cost is low, more economical practicality.
4, bulb and connecting axle are also split Split type structures, can select different materials and processing method equally, be conducive to controlling cost according to respective functional characteristics.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of middle gear ring embodiment illustrated in fig. 1 according to crest top land, root face on facewidth direction;
Fig. 4 is the structural representation of the transverse tooth thickness of middle gear ring embodiment illustrated in fig. 1.
In figure: 1 rotor connection, 2 ball seats, 3 gear rings, 31 crest top lands, 32 root faces, 4 plug wires, 5 compacting rings, 6 sealing shrouds, 7 connecting axles, 8 clips, 9 briquettings, 10 bulbs, 11 shaft adapters.
Detailed description of the invention
As shown in Figure 1, the universal shaft type helicoid hydraulic motor of this spline, comprise universal drive shaft, its special feature is: the universal drive shaft of this kind of helicoid hydraulic motor comprises connecting axle 7 and is connected to the rotor connection 1 at connecting axle 7 two ends, shaft adapter 10.
Rotor connection 1 is connected with motor rotor by screw thread, and shaft adapter 10 is connected with power transmission shaft by screw thread, the planetary motion of rotor is delivered on drill bit by power transmission shaft.
The lower end edge of described rotor connection 1 is axially provided with endoporus; The upper end edge of shaft adapter 10 is axially also provided with endoporus; Short involute internal gear structure is equipped with in the endoporus of rotor connection, the endoporus of shaft adapter.
Short involute internal gear structure described in two coordinates with a gear ring 3 respectively.The A-A sectional view of Fig. 1 shown in Fig. 2, have expressed the assembly relation between rotor connection, gear ring, connecting axle.
As shown in Figure 2, described gear ring 3 is external gear structures.Preferably gear ring is set to the pattern of large modulus, the little number of teeth, transmitting torque is large.
The modification coefficient of described gear ring 3 is less than the modification coefficient of the described short involute internal gear structure of cooperation.
The crest top land 31 of described gear ring 3, root face 32 are the arc-shaped curved surface that on facewidth direction, middle part bloats, and as shown in Figure 3, and crest top land, root face are parallel; On facewidth direction, thinning gradually to the two ends transverse tooth thickness in facewidth direction by the centre in facewidth direction, as shown in Figure 4.Two gear rings can swing certain angle respectively in rotor connection 1 and shaft adapter 10, so just can compensate the eccentric motion of helicoid hydraulic motor rotor and the bent angle of universal drive shaft.
Two described gear rings 3 pass through standard involute spline joint with the two ends of connecting axle 7 respectively, and described connecting axle 7 and two gear rings 3 are Split type structures, after gear ring 3 weares and teares, only can change gear ring 3, and easy to maintenance, simply, maintenance cost is low in processing; Also be conducive to gear ring 3 to make with different materials respectively from connecting axle 7, save material and can reach better performance again.
Respectively by the bulb 10 that has been threaded on two end faces of connecting axle 7, step on the end face of bulb 10 and connecting axle 7 forms the axial location to gear ring 3, the outer convex spherical of bulb 10 and the indent mating spherical surfaces of ball seat 2, the outer convex spherical of bulb 10 and the same centre of sphere of interior concave spherical surface of ball seat 2, and the centre of sphere is positioned on the axis of gear ring 3; Ensure gear ring 3 swing to rotate with bulb 10 mutually collaborative, can not disturb, ensure the accuracy, the stable drive that engage.
In the endoporus of the fixing respectively endoporus being arranged on rotor connection 1 of two ball seats 2, shaft adapter 11.
As further improvement of the utility model, be respectively arranged with one group of hermetically-sealed construction between one end of connecting axle 7 and rotor connection 1, between the other end of connecting axle 7 and shaft adapter 11, prevent drilling fluid from entering the inside of universal drive shaft.
Often organize described hermetically-sealed construction and comprise sealing shroud 6, briquetting 9, compacting ring 5, clip 8.
One end of briquetting 9 has the V-type annular groove vertically in the middle part of connecting axle 7, and the briquetting 9 in two groups of hermetically-sealed constructions by the V-type annular groove of one end of sealing shroud 6 press-in briquetting 9, and is pressed on rotor connection 1, shaft adapter 11 by compacting ring 5 simultaneously respectively; In this embodiment, described sealing shroud 6 adopts oil resistant rubber to make.
Compacting ring 5 in two groups of hermetically-sealed constructions is connected with rotor connection 1, power transmission shaft street corner 11 respectively by helicitic texture.
Briquetting 9 is nested with on connecting axle 7, and the aperture of the endoporus of briquetting 9 is less than the external diameter of gear ring 3, can also form spacing to gear ring 3 like this; Gap is provided with between briquetting 9 and gear ring 3 end face.
In two groups of hermetically-sealed constructions, the other end of sealing shroud 6 is fixed on connecting axle 7 respectively by described clip 8.
As further improvement of the utility model, described rotor connection 1 and shaft adapter 11 all have oil filler point.In oil filler point, inject lubricating grease after assembling, ensure that gear ring and internal tooth, bulb and ball seat always work in and lubricate in environment; After oiling, oil filler point assembles plug wire 4, oil filler point is sealed.
As further improvement of the utility model, the flank of tooth in described gear ring 3 and rotor connection 1, shaft adapter 11 endoporus adopts carburizing or Nitrizing Treatment, not only more wear-resisting, can also transmit more high pulling torque.
When spline universal drive shaft works, rotor axial power passes to bulb 10 by ball seat 2, and moment of torsion is passed to connecting axle by bulb again, and connecting axle passes to shaft adapter in the same way.The centre of sphere of ball seat and bulb is at the center of gear ring, and the center rotating all the time along oneself when making gear ring rotate, ensures accuracy, the stable drive of engagement.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should belong within patent covering scope of the present utility model.
The other technologies of helicoid hydraulic motor are prior art, repeat no more.

Claims (5)

1. the universal shaft type helicoid hydraulic motor of spline, comprises universal drive shaft; It is characterized in that: described universal drive shaft comprises the rotor connection of power input, the shaft adapter of outputting power, also comprises connecting axle;
The lower end edge of described rotor connection is axially provided with endoporus; The upper end edge of shaft adapter is axially also provided with endoporus; Short involute internal gear structure is equipped with in the endoporus of rotor connection, the endoporus of shaft adapter;
Short involute internal gear structure described in two coordinates with a gear ring respectively;
Described gear ring is external gear structure;
The modification coefficient of described gear ring is less than the modification coefficient of the described short involute internal gear structure of cooperation;
The crest top land of described gear ring, root face are the arc-shaped curved surface that on facewidth direction, middle part bloats, and crest top land, root face are parallel; On facewidth direction, thinning gradually to the two ends transverse tooth thickness in facewidth direction by the centre in facewidth direction;
Two described gear rings pass through standard involute spline joint with the two ends of connecting axle respectively, respectively by the bulb that has been threaded on two end faces of connecting axle, step on the end face of bulb and connecting axle forms the axial location to gear ring, the outer convex spherical of bulb and the indent mating spherical surfaces of ball seat, the outer convex spherical of bulb and the same centre of sphere of interior concave spherical surface of ball seat, and the centre of sphere is positioned on the axis of gear ring;
In the endoporus of the fixing respectively endoporus being arranged on rotor connection of two ball seats, shaft adapter.
2. the universal shaft type helicoid hydraulic motor of spline according to claim 1, it is characterized in that: be respectively arranged with one group of hermetically-sealed construction between one end of connecting axle and rotor connection, between the other end of connecting axle and shaft adapter, often organize described hermetically-sealed construction and comprise sealing shroud, briquetting, compacting ring, clip;
One end of briquetting has the V-type annular groove vertically in the middle part of connecting axle, and the briquetting in two groups of hermetically-sealed constructions is also pressed on rotor connection, shaft adapter by compacting ring by the V-type annular groove of one end of sealing shroud press-in briquetting simultaneously respectively; Compacting ring in two groups of hermetically-sealed constructions is connected with rotor connection, power transmission shaft street corner respectively by helicitic texture;
Briquetting is nested with on connecting axle, and the aperture of the endoporus of briquetting is less than the external diameter of gear ring; Gap is provided with between briquetting and gear ring end face;
In two groups of hermetically-sealed constructions, the other end of sealing shroud is fixed on connecting axle respectively by described clip.
3. the universal shaft type helicoid hydraulic motor of spline according to claim 1 and 2, is characterized in that: described rotor connection and shaft adapter all have oil filler point.
4. the universal shaft type helicoid hydraulic motor of spline according to claim 3, is characterized in that: the flank of tooth in described gear ring and rotor connection, shaft adapter endoporus adopts carburizing or Nitrizing Treatment.
5. the universal shaft type helicoid hydraulic motor of spline according to claim 2, is characterized in that: described sealing shroud adopts oil resistant rubber to make.
CN201520540442.5U 2015-07-23 2015-07-23 Universal shaft type screw rod drilling tool of spline Withdrawn - After Issue CN204782821U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520540442.5U CN204782821U (en) 2015-07-23 2015-07-23 Universal shaft type screw rod drilling tool of spline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520540442.5U CN204782821U (en) 2015-07-23 2015-07-23 Universal shaft type screw rod drilling tool of spline

Publications (1)

Publication Number Publication Date
CN204782821U true CN204782821U (en) 2015-11-18

Family

ID=54522889

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520540442.5U Withdrawn - After Issue CN204782821U (en) 2015-07-23 2015-07-23 Universal shaft type screw rod drilling tool of spline

Country Status (1)

Country Link
CN (1) CN204782821U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989291A (en) * 2015-07-23 2015-10-21 德州联合石油机械有限公司 Spline cardan shaft type screw drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989291A (en) * 2015-07-23 2015-10-21 德州联合石油机械有限公司 Spline cardan shaft type screw drill
CN104989291B (en) * 2015-07-23 2017-12-22 德州联合石油机械有限公司 The universal shaft type helicoid hydraulic motor of spline

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20151118

Effective date of abandoning: 20171222

AV01 Patent right actively abandoned