CN206592280U - Screw pump transmission shaft structure - Google Patents
Screw pump transmission shaft structure Download PDFInfo
- Publication number
- CN206592280U CN206592280U CN201720215535.XU CN201720215535U CN206592280U CN 206592280 U CN206592280 U CN 206592280U CN 201720215535 U CN201720215535 U CN 201720215535U CN 206592280 U CN206592280 U CN 206592280U
- Authority
- CN
- China
- Prior art keywords
- drive shaft
- elastic drive
- transmission shaft
- axle sleeve
- flexible axle
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 230000005489 elastic deformation Effects 0.000 claims abstract description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of screw pump transmission shaft structure, including the turning set being connected with armature spindle and the flexible axle sleeve being connected 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, which is fixed, to be set in flexible axle set, and now elastic drive shaft is in elastic deformation.The utility model improves operating efficiency, and can transmit larger axial load and moment of torsion, effectively extension power transmission shaft service life.
Description
Technical field
The utility model is related 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 in addition to by axial load, also
Moment of torsion need to be transmitted, design structure is complicated, while relatively difficult during universal joint replacing, 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 and flexible axle sleeve are coaxial, not coaxial with turning set, and the left end of transmission shaft body is connected by universal joint and 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.
Utility model content
The utility model improves to solve the problems of the prior art there is provided a kind of screw pump transmission shaft structure
Operating efficiency, and larger axial load and moment of torsion, effectively extension power transmission shaft service life can be transmitted.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：Screw pump transmission shaft structure, bag
The turning set being connected with armature spindle and the flexible axle sleeve being connected with driving shaft are included, turning set is different from flexible axle sleeve
Axle is set, and is provided with transmission shaft body between turning set and flexible axle sleeve, and the transmission shaft body is elastic drive shaft, and bullet
Property power transmission shaft one end fix and be set in turning set, the other end of elastic drive shaft, which is fixed, to be set in flexible axle set, now
Elastic drive shaft is in elastic deformation.
The elastic drive shaft and the end that flexible axle sleeve be connected be provided with circular cone external thread section, flexible axle sleeve provided with
Conical inner screw thread that the circular cone external thread section is engaged section, elastic drive shaft and flexibility axle sleeve pass through spiral shell outside the circular cone that is 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 to be made.
The middle part of the elastic drive shaft is provided with protective layer.
The beneficial effects of the utility model are：
The utility model eliminates former gimbal structure, is changed to monolithic construction, and one end of elastic drive shaft, which is fixed, to be arranged
In turning set, the other end of elastic drive shaft, which is fixed, to be set in flexible axle set, and now elastic drive shaft is in elastic deformation
State, it utilizes the characteristics of elastic drive shaft modulus of elasticity is low, by the connection of biting connecions structure, the torsion between realization is not coaxial
Square is transmitted.
The elastic drive shaft and the end that flexible axle sleeve be connected be provided with circular cone external thread section, flexible axle sleeve provided with
Conical inner screw thread that the circular cone external thread section is engaged section, elastic drive shaft and flexibility axle sleeve pass through spiral shell outside the circular cone that is 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 shearing is moved to both sides, it is to avoid stress concentration.In addition, 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 to be made, and titanium alloy material has density small
（About 4.5g/cm3）, tensile strength height（441~1470MPa）, i.e. specific strength is big（Strength/density）Greatly, modulus of elasticity 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 present utility model.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.
As shown in Fig. 2 screw pump transmission shaft structure of the present utility model, including the rotation being connected with armature spindle
Set 1 and the flexible axle sleeve 2 being connected with driving shaft, turning set 1 are not coaxially disposed with flexible axle sleeve 2, and turning set 1 is with scratching
Property axle sleeve 2 between be provided with transmission shaft body, the transmission shaft body is elastic drive shaft 3, and one end of elastic drive shaft 3 is consolidated
Surely it is set in turning set 1, the other end of elastic drive shaft 3, which is fixed, to be set in flexible axle set 2, now at elastic drive shaft 3
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,
Provided with the conical inner screw thread section 21 being engaged with the circular cone external thread section 31, elastic drive shaft 3 and flexible axle in flexible axle sleeve 2
Set 2 forms taper thread by circular cone external thread section 31 and the conical inner screw thread section 21 being engaged and connected.The structure design is fully sharp
Big, the characteristics of screw thread tooth rigidity is big with the taper and pitch of screw thread so that transmission axle thread can bear larger pretension
Power is without slide fastener, not only with good sealing, moreover it is possible to transmit larger axial load and moment of torsion.
Moreover, 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 be moved to both sides, it is to avoid stress concentration.In addition, can also be in the pars intermedia of elastic drive shaft 3
Position carries out surface leaching modeling processing to it using impregnation and forms protective layer, to increase the protection to power transmission shaft.
The elastic drive shaft and cylinder boss are integrally formed by titanium alloy material to be made.Titanium alloy material has density small
（About 4.5g/cm3）, tensile strength height（441~1470MPa）, i.e. specific strength is big（Strength/density）Greatly, modulus of elasticity is more low
Advantage, effectively extension power transmission shaft service life.
The utility model eliminates former gimbal structure, is changed to monolithic construction, and it utilizes elastic drive shaft modulus of elasticity
Low the characteristics of, by the connection of biting connecions structure, the moment of torsion transmission between realization is not coaxial.Also, the utility model is also improved
The structure of axle, 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 the fracture during power transmission shaft use.The utility model improves operating efficiency, it is to avoid one produced using universal joint
A little harmful effects.
Above example is only used to illustrative and not limiting the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model is described in detail, it will be understood by those within the art that：The utility model can still be entered
Row modification or equivalent substitution, without departing from any modification or partial replacement of spirit and scope of the present utility model, it all should
Cover among right of the present utility model.
Claims (5)
1. screw pump transmission shaft structure, including the turning set that is connected with armature spindle and it is 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 elastic drive shaft, and one end fixation of elastic drive shaft is set in turning set, elasticity
The other end of power transmission shaft, which is fixed, to be 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, flexible axle sleeve provided with the circular cone being engaged with the circular cone external thread section
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 or 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 |
|---|---|---|---|
| CN201720215535.XU CN206592280U (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720215535.XU CN206592280U (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592280U true CN206592280U (en) | 2017-10-27 |
Family
ID=60126907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720215535.XU Expired - Fee Related CN206592280U (en) | 2017-03-07 | 2017-03-07 | Screw pump transmission shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206592280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762623A (en) * | 2017-03-07 | 2017-05-31 | 洛阳耿力工程机械有限公司 | Screw pump transmission shaft structure |
-
2017
- 2017-03-07 CN CN201720215535.XU patent/CN206592280U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762623A (en) * | 2017-03-07 | 2017-05-31 | 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 |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |