CN201347879Y - Device for matching and connecting pump shaft and coupling - Google Patents
Device for matching and connecting pump shaft and coupling Download PDFInfo
- Publication number
- CN201347879Y CN201347879Y CNU2008202267267U CN200820226726U CN201347879Y CN 201347879 Y CN201347879 Y CN 201347879Y CN U2008202267267 U CNU2008202267267 U CN U2008202267267U CN 200820226726 U CN200820226726 U CN 200820226726U CN 201347879 Y CN201347879 Y CN 201347879Y
- Authority
- CN
- China
- Prior art keywords
- pump shaft
- coupling
- hole
- shaft
- screw thread
- 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
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Abstract
A device for matching and connecting pump shaft and coupling relates to pumps, wherein key grooves are arranged on a pump shaft, flat keys are arranged on the key grooves, the pump shaft is a taper shaft, a connecting hole of a coupling, which is corresponding to the pump shaft, is a taper hole, the connecting hole of the coupling corresponds to the flat keys on the pump shaft and is equipped with key grooves, a screw thread is arranged on the end portion of the pump shaft, a nut is arranged on the screw thread on the end portion of the pump shaft, the nut is adopted for pressing the coupling, the pump shaft is closely matched with the taper hole of the coupling, none gap exists between the pump shaft and the taper hole of the coupling, the torque is transferred through friction force of the conical face and the flat key, big torque can be transferred, the unbalanced force which may be generated is reduced, stable work of the rotor is guaranteed, the assembly and disassembly are easy, the assembly precision is high, and the device is applicable to connecting shafts.
Description
Technical field
The utility model relates to the pump class, is a kind of pump shaft and the coupling device that is connected specifically.
Background technique
We know, existing pump shaft and the coupling device that is connected is to be provided with keyway on the cylinder pump shaft, and keyway is provided with flat key, and the straight hole of cylinder pump shaft and coupling is connected.This pump shaft and the coupling device that is connected, because the straight hole of cylinder pump shaft and coupling is connected, be easy to generate the gap between pump shaft and the coupling during assembling or magnitude of interference is big, also need heating to assemble when magnitude of interference is big, be difficult for Assembly And Disassembly, assembly precision is low.
Summary of the invention
The technical problem that the utility model solves is, solve and to be easy to generate the gap between pump shaft and the coupling or magnitude of interference is big, also need the heating assembling when magnitude of interference is big, be difficult for Assembly And Disassembly, the problem that assembly precision is low, providing between a kind of pump shaft and the coupling does not have the gap, does not need the heating assembling, easy Assembly And Disassembly, pump shaft that assembly precision is high and the coupling device that is connected.
The technical solution of the utility model is, pump shaft is provided with keyway, keyway is provided with flat key, the main structure characteristics are, pump shaft is a diminished shaft, is cone shape hole with the attachment hole of its corresponding coupling, and the attachment hole of coupling has keyway with corresponding of the flat key on the pump shaft, the pump shaft end is provided with screw thread, and the screw thread of pump shaft end is provided with nut.
The tapering of the attachment hole of the utility model pump shaft and coupling is 1: 20 a tapering.
Beneficial effect of the present utility model really is, because pump shaft is a diminished shaft, the attachment hole of coupling is a cone shape hole, the attachment hole of coupling is provided with keyway, the screw thread of pump shaft end is provided with nut, adopt nut to compress coupling, pump shaft is cooperated closely with the cone shape hole of coupling, do not have the gap between the cone shape hole of pump shaft and coupling, frictional force and the flat key transmission of moment of torsion by the conical surface can transmitting large torque, the unbalanced force that minimizing may occur, guarantee to pass sub-smooth working, easy Assembly And Disassembly, assembly precision height.The utility model is applicable to being connected of pump shaft and coupling.
Description of drawings
Accompanying drawing is a kind of schematic representation of the present utility model, also is a kind of embodiment's schematic representation.
Embodiment
Pump shaft as shown in the figure and the coupling device that is connected, pump shaft 2 is provided with keyway, and keyway is provided with flat key 3.Pump shaft 2 is a diminished shaft, and the attachment hole on the corresponding coupling 1 with it is a cone shape hole, and the tapering of the attachment hole of pump shaft 2 and coupling 1 is 1: 20 a tapering.The flat key 3 corresponding keyways that are provided with on the attachment hole of coupling 1 and the pump shaft 2.Pump shaft 2 ends are provided with screw thread, the screw thread of pump shaft 2 ends is provided with nut 4, adopt nut 4 to compress coupling 1, pump shaft 2 is cooperated closely with the cone shape hole of coupling 1, do not have the gap between the cone shape hole of pump shaft 2 and coupling 1, moment of torsion transmits by the frictional force and the flat key 3 of the conical surface, can transmitting large torque, the unbalanced force that minimizing may occur guarantees the rotor smooth working, easy Assembly And Disassembly, the assembly precision height.The utility model be applicable to the axle with spool be connected.
Claims (2)
1, a kind of pump shaft and the connection uranium device device that is connected, pump shaft is provided with keyway, keyway is provided with flat key, it is characterized in that: pump shaft is a diminished shaft, with the attachment hole of its corresponding coupling is cone shape hole, the corresponding keyway that is provided with of the attachment hole of coupling with the flat key on the pump shaft, the pump shaft end is provided with screw thread, and the screw thread of pump shaft end is provided with nut.
2, pump shaft according to claim 1 and the coupling device that is connected, it is characterized in that: the tapering of the attachment hole of said pump shaft and coupling is 1: 20 a tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202267267U CN201347879Y (en) | 2008-12-24 | 2008-12-24 | Device for matching and connecting pump shaft and coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202267267U CN201347879Y (en) | 2008-12-24 | 2008-12-24 | Device for matching and connecting pump shaft and coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347879Y true CN201347879Y (en) | 2009-11-18 |
Family
ID=41367349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202267267U Expired - Fee Related CN201347879Y (en) | 2008-12-24 | 2008-12-24 | Device for matching and connecting pump shaft and coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201347879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089790A (en) * | 2016-07-20 | 2016-11-09 | 哈尔滨电气动力装备有限公司 | Pump shaft and lower half a coupler symmetric double key fit key technique under core main pump |
-
2008
- 2008-12-24 CN CNU2008202267267U patent/CN201347879Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089790A (en) * | 2016-07-20 | 2016-11-09 | 哈尔滨电气动力装备有限公司 | Pump shaft and lower half a coupler symmetric double key fit key technique under core main pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20101224 |