CN106762623A - Screw pump transmission shaft structure - Google Patents
Screw pump transmission shaft structure Download PDFInfo
- Publication number
- CN106762623A CN106762623A CN201710131377.4A CN201710131377A CN106762623A CN 106762623 A CN106762623 A CN 106762623A CN 201710131377 A CN201710131377 A CN 201710131377A CN 106762623 A CN106762623 A CN 106762623A
- Authority
- CN
- China
- Prior art keywords
- drive shaft
- transmission shaft
- elastic drive
- flexible axle
- axle sleeve
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/08—End connections
Abstract
The invention discloses a kind of screw pump transmission shaft structure, the flexible axle sleeve being connected including the turning set being connected with armature spindle and with driving shaft, turning set axle different from flexible axle sleeve is set, and it is provided with transmission shaft body between turning set and flexible axle sleeve, the transmission shaft body is elastic drive shaft, and one end of elastic drive shaft is fixed and is set in turning set, the other end of elastic drive shaft is fixed and is set in flexible axle set, and now elastic drive shaft is in elastic deformation.The present invention improves operating efficiency, and can transmit larger axial load and moment of torsion, effectively extension power transmission shaft service life.
Description
Technical field
The present invention relates to screw pump drive technology field, more particularly to a kind of screw pump transmission shaft structure.
Background technology
At present, the screw pump of domestic many producer's design productions carries out transmission company on driven Design using universal joint
Connect, in the screw pump course of work, because power transmission shaft is not coaxial with rotor, in transmission process, power transmission shaft is gone back in addition to by axial load
Transmitting torque is needed, design structure is complicated, while universal joint is relatively difficult when changing, the maintenance to machinery brings very big technology difficult
Topic.
As shown in figure 1, it is the structural representation of existing screw rod pump drive shaft, it includes and turning that armature spindle is connected
Dynamic set and the flexible axle sleeve being connected with driving shaft, turning set axle different from flexible axle sleeve are set, power transmission shaft sheet during connection
Body is coaxial with flexible axle sleeve, not coaxial with turning set, and the left end of transmission shaft body is connected by universal joint with turning set,
The right-hand member for being driven shaft body is connected with flexible axle sleeve, and transmission shaft body uses cylindrical thread type of attachment with flexible axle sleeve.
The content of the invention
The present invention is in order to solve the problems of the prior art, there is provided a kind of screw pump transmission shaft structure, improves work
Make efficiency, and larger axial load and moment of torsion can be transmitted, effectively extension power transmission shaft service life.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：Screw pump transmission shaft structure, including with
The turning set of armature spindle drive connection and the flexible axle sleeve being connected with driving shaft, turning set axle different from flexible axle sleeve set
Put, and transmission shaft body is provided between turning set and flexible axle sleeve, the transmission shaft body is elastic drive shaft, and elasticity is passed
One end of moving axis is fixed and is set in turning set, and the other end of elastic drive shaft is fixed and is set in flexible axle set, now elasticity
Power transmission shaft is in elastic deformation.
The end that the elastic drive shaft is connected with flexible axle sleeve is provided with circular cone external thread section, be provided with flexible axle sleeve with
The conical inner screw thread section that the circular cone external thread section is engaged, elastic drive shaft is with flexible axle sleeve by the outer spiral shell of the circular cone being engaged
Line section and conical inner screw thread section form taper thread connection.
The middle part of the elastic drive shaft is coaxially arranged with cylinder boss, and cylinder boss is integrated with elastic drive shaft
Formula structure.
The elastic drive shaft and cylinder boss are integrally formed by titanium alloy material and are made.
The middle part of the elastic drive shaft is provided with protective layer.
The beneficial effects of the invention are as follows：
Present invention eliminates former gimbal structure, monolithic construction is changed to, one end of elastic drive shaft is fixed and is set in turning set
Interior, the other end of elastic drive shaft is fixed and is set in flexible axle set, and now elastic drive shaft is in elastic deformation, its profit
With elastic drive shaft elastic modelling quantity it is low the characteristics of, by the connection of biting connecions structure, realize it is not coaxial between moment of torsion transmission.
The end that the elastic drive shaft is connected with flexible axle sleeve is provided with circular cone external thread section, be provided with flexible axle sleeve with
The conical inner screw thread section that the circular cone external thread section is engaged, elastic drive shaft is with flexible axle sleeve by the outer spiral shell of the circular cone being engaged
Line section and conical inner screw thread section form taper thread connection, and the taper and pitch that the structure design takes full advantage of screw thread are big, screw thread
The characteristics of tooth rigidity is big so that transmission axle thread can bear larger pretightning force without slide fastener, not only with good close
Feng Xing, moreover it is possible to transmit larger axial load and moment of torsion.
The middle part of the elastic drive shaft is coaxially arranged with cylinder boss, and cylinder boss is integrated with elastic drive shaft
Formula structure, by increasing the design of its diameter in power transmission shaft middle part, enhances the intensity at stress concentration position, and so
Design make shearing to two side shiftings, it is to avoid stress concentration.Additionally, the middle part of elastic drive shaft is provided with protective layer, with
Increase the protection to power transmission shaft.
The elastic drive shaft and cylinder boss are integrally formed by titanium alloy material and are made, and titanium alloy material has density small
（About 4.5g/cm3）, tensile strength is high（441~1470MPa）, i.e. specific strength is big（Strength/density）Greatly, elastic modelling quantity is more low
Advantage, effectively extension power transmission shaft service life.
Brief description of the drawings
Fig. 1 is the structural representation of existing screw rod pump drive shaft；
Fig. 2 is structural representation of the invention.
Specific embodiment
Specific embodiment of the invention is elaborated below in conjunction with accompanying drawing.
As shown in Fig. 2 screw pump transmission shaft structure of the invention, including the turning set 1 being connected with armature spindle
And the flexible axle sleeve 2 being connected with driving shaft, turning set 1 is not coaxially disposed with flexible axle sleeve 2, and turning set 1 and flexibility
It is provided with transmission shaft body between axle sleeve 2, the transmission shaft body is elastic drive shaft 3, and one end of elastic drive shaft 3 is fixed
It is set in turning set 1, the other end of elastic drive shaft 3 is fixed and is set in flexible axle set 2, and now elastic drive shaft 3 is in
Elastic deformation.
In the present embodiment, the end that the elastic drive shaft 3 is connected with flexible axle sleeve 2 is provided with circular cone external thread section 31,
The conical inner screw thread section 21 being engaged with the circular cone external thread section 31, elastic drive shaft 3 and flexible axle are provided with flexible axle sleeve 2
Set 2 forms taper thread and connects by circular cone external thread section 31 and the conical inner screw thread section 21 being engaged.The structure design is fully sharp
It is big with the taper and pitch of screw thread, the characteristics of screw thread tooth rigidity is big so that transmission axle thread can bear larger pretension
Power without slide fastener, not only with good sealing, moreover it is possible to transmit larger axial load and moment of torsion.
And, the middle part of the elastic drive shaft 3 is coaxially arranged with cylinder boss 4, cylinder boss 4 and elastic transmission
Axle 3 is integral type structure.By increasing the design of its diameter in the middle part of power transmission shaft 3, the strong of stress concentration position is enhanced
Degree, and such design makes shearing to two side shiftings, it is to avoid stress concentration.Additionally, can also be in the pars intermedia of elastic drive shaft 3
Position carries out surface to it and soaks modeling treatment formation protective layer using impregnation, to increase the protection to power transmission shaft.
The elastic drive shaft and cylinder boss are integrally formed by titanium alloy material and are made.Titanium alloy material has density small
（About 4.5g/cm3）, tensile strength is high（441~1470MPa）, i.e. specific strength is big（Strength/density）Greatly, elastic modelling quantity is more low
Advantage, effectively extension power transmission shaft service life.
Present invention eliminates former gimbal structure, monolithic construction is changed to, it utilizes elastic drive shaft elastic modelling quantity low
Feature, by the connection of biting connecions structure, the moment of torsion transmission between realization is not coaxial.Also, invention also improves the knot of axle
Structure, makes to take strength structure to design at the easy fracture of power transmission shaft（Increase its diameter in the middle part of power transmission shaft 3）, eliminate transmission
Fracture during axle use.The present invention improves operating efficiency, it is to avoid some harmful effects produced using universal joint.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover in power of the invention
In the middle of sharp claimed range.
Claims (5)
1. screw pump transmission shaft structure, including the turning set that is connected with armature spindle and be connected with driving shaft
Flexible axle sleeve, turning set axle different from flexible axle sleeve is set, and is provided with transmission shaft body between turning set and flexible axle sleeve, its
It is characterised by：The shaft body that is driven is for elastic drive shaft, and one end fixation of elastic drive shaft is set in turning set, elasticity
The other end of power transmission shaft is fixed and is set in flexible axle set, and now elastic drive shaft is in elastic deformation.
2. screw pump transmission shaft structure according to claim 1, it is characterised in that：The elastic drive shaft and flexibility
The end of axle sleeve connection is provided with circular cone external thread section, and the circular cone being engaged with the circular cone external thread section is provided with flexible axle sleeve
Internal thread segment, elastic drive shaft forms taper thread with flexible axle sleeve by circular cone external thread section and the conical inner screw thread section being engaged
Connection.
3. screw pump transmission shaft structure according to claim 1 and 2, it is characterised in that：The elastic drive shaft
Middle part is coaxially arranged with cylinder boss, and cylinder boss is integral type structure with elastic drive shaft.
4. screw pump transmission shaft structure according to claim 3, it is characterised in that：The elastic drive shaft and cylinder
Boss is integrally formed by titanium alloy material and is made.
5. screw pump transmission shaft structure according to claim 4, it is characterised in that：The centre of the elastic drive shaft
Position is provided with protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131377.4A CN106762623A (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710131377.4A CN106762623A (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106762623A true CN106762623A (en) | 2017-05-31 |
Family
ID=58961057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710131377.4A Pending CN106762623A (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106762623A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636151A (en) * | 1985-03-13 | 1987-01-13 | Hughes Tool Company | Downhole progressive cavity type drilling motor with flexible connecting rod |
| US5769618A (en) * | 1995-09-25 | 1998-06-23 | Heishin Sobi Kabushiki Kaisha | Uniaxial eccentric screw pump having a flexible plastic shaft |
| CN203066891U (en) * | 2013-02-05 | 2013-07-17 | 邹城市东远石油机械有限公司 | Flexible cardan shaft assembly in screw drill |
| CN105673483A (en) * | 2016-03-31 | 2016-06-15 | 中国石油天然气股份有限公司 | Flexible shaft transmission device of submersible direct-drive screw pump |
| CN206592280U (en) * | 2017-03-07 | 2017-10-27 | 洛阳耿力工程机械有限公司 | Screw pump transmission shaft structure |
-
2017
- 2017-03-07 CN CN201710131377.4A patent/CN106762623A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636151A (en) * | 1985-03-13 | 1987-01-13 | Hughes Tool Company | Downhole progressive cavity type drilling motor with flexible connecting rod |
| US5769618A (en) * | 1995-09-25 | 1998-06-23 | Heishin Sobi Kabushiki Kaisha | Uniaxial eccentric screw pump having a flexible plastic shaft |
| CN203066891U (en) * | 2013-02-05 | 2013-07-17 | 邹城市东远石油机械有限公司 | Flexible cardan shaft assembly in screw drill |
| CN105673483A (en) * | 2016-03-31 | 2016-06-15 | 中国石油天然气股份有限公司 | Flexible shaft transmission device of submersible direct-drive screw pump |
| CN206592280U (en) * | 2017-03-07 | 2017-10-27 | 洛阳耿力工程机械有限公司 | Screw pump transmission shaft structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |