CN110043551B - Anti-loose shaft sleeve nut - Google Patents
Anti-loose shaft sleeve nut Download PDFInfo
- Publication number
- CN110043551B CN110043551B CN201910434330.4A CN201910434330A CN110043551B CN 110043551 B CN110043551 B CN 110043551B CN 201910434330 A CN201910434330 A CN 201910434330A CN 110043551 B CN110043551 B CN 110043551B
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- pin
- sleeve nut
- hole
- groove
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The anti-loose shaft sleeve nut comprises a shaft sleeve nut and a stop pin, wherein a plurality of longitudinal grooves are formed in the inner hole wall of the front part of the shaft sleeve nut, the width of each longitudinal groove is slightly wider than the diameter of the corresponding stop pin, and the depth of each longitudinal groove is smaller than the length of the corresponding stop pin. The rear part of the longitudinal groove is provided with an annular process groove which is mainly used for retracting a cutter during processing the longitudinal groove, and the width of the annular process groove is smaller than the diameter of the backstop pin. The rear part of the shaft sleeve nut is fine threads like the traditional shaft sleeve nut, the thread direction is opposite to the rotating direction of the rotor during normal operation, and the radial groove for installing the shaft sleeve nut is arranged at the tail part of the shaft sleeve nut and is used for placing a hook wrench during installation. A pin hole is drilled at a position corresponding to a shaft matched with the shaft sleeve nut, an indication hole is drilled on the shaft matched with the shaft sleeve nut, the indication hole and the pin hole are positioned at the same circumferential position, the pin hole is in clearance fit with the backstop pin, and the depth of the pin hole is slightly larger than that of the backstop pin.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to an anti-loose shaft sleeve nut for a rotor component of an impeller machine.
Background
In the pump structure, in order to axially fix the impeller and protect the shaft, a shaft sleeve is often arranged behind the impeller hub, and the impeller is axially fixed through a shaft sleeve nut. To prevent the sleeve nut from backing out, the nut tends to be rotated in the opposite direction to the rotor. However, the rotor may rotate reversely due to sudden power failure or other reasons, so that if no anti-loosening measure is adopted, the sleeve nut tends to loosen, the normal operation of the equipment is affected by a light person, and a safety accident is seriously caused.
Disclosure of Invention
Based on the problems existing in the prior art, the invention aims to provide the anti-loose shaft sleeve nut which can prevent loosening and has a simple structure.
The invention solves the problems by adopting the following technical scheme:
the anti-loose shaft sleeve nut comprises a shaft sleeve nut and a stop pin, wherein a plurality of longitudinal grooves are formed in the inner hole wall of the front part of the shaft sleeve nut, the width of each longitudinal groove is slightly wider than the diameter of the corresponding stop pin, and the depth of each longitudinal groove is smaller than the length of the corresponding stop pin.
Further, an annular process groove is arranged at the rear part of the longitudinal groove and is mainly used for retracting a cutter when the longitudinal groove is machined, and the width of the annular process groove is smaller than the diameter of the backstop pin.
Further, the rear part of the shaft sleeve nut is provided with fine threads like the traditional shaft sleeve nut, the thread direction is opposite to the rotating direction of the rotor during normal operation, and the tail part is provided with a radial groove for installing the shaft sleeve nut for placing a hook wrench during installation. A pin hole is drilled at a position corresponding to the shaft matched with the shaft sleeve nut, the pin hole is in clearance fit with the backstop pin, and the depth of the pin hole is slightly larger than that of the backstop pin.
Further, an indication hole is drilled on the shaft matched with the shaft sleeve nut, and the indication hole and the pin hole are positioned at the same circumferential position.
During installation, the anti-rust oil is fully coated on the anti-return pin and the pin hole on the shaft, the pin hole is upward, the anti-return pin is placed in the pin hole, the anti-return pin naturally falls into the bottom of the pin hole due to gravity, the impeller and the shaft sleeve are well arranged and the axial position is well adjusted, and the shaft sleeve nut is fastened. And when the retaining pin is aligned with the longitudinal groove on the sleeve nut, the retaining pin is inserted into the longitudinal groove to clamp the sleeve nut. When the sleeve nut is disassembled, the rotor is rotated to the position that the indicating hole faces upwards, and the indicating hole and the pin hole are positioned at the same circumferential position, so that the pin hole is also positioned at the upward position, and the retaining pin and the sample during installation naturally fall into the bottom of the pin hole due to gravity, so that the sleeve nut can be withdrawn.
The invention has the beneficial effects that: a very simple structure can prevent the loose backing of axle sleeve nut when the counter-rotation, can install and dismantle very conveniently again.
Drawings
Fig. 1 is a schematic view of a locksleeve nut.
Fig. 2 is a schematic view of the locknut structure when installed.
Fig. 3 is a schematic view of the structure of the locknut when rotated.
In the figure: 1. the shaft sleeve nut, the longitudinal groove, the annular process groove, the threads, the radial groove, the stop pin, the shaft, the pin hole and the indicating hole are respectively arranged in the shaft sleeve nut, the longitudinal groove, the annular process groove, the threads, the radial groove, the stop pin, the shaft, the pin hole and the indicating hole.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
The anti-loose shaft sleeve nut comprises a shaft sleeve nut (1) and a stop pin (6), wherein a plurality of longitudinal grooves (2) are formed in the inner hole wall of the front part of the shaft sleeve nut (1), the width of each longitudinal groove (2) is slightly wider than the diameter of the corresponding stop pin (6), and the depth of each longitudinal groove (2) is smaller than the length of the corresponding stop pin (6). The rear part of the longitudinal groove (2) is provided with an annular process groove (3), the annular process groove (3) is mainly used for retracting a cutter when the longitudinal groove is machined, and the width of the annular process groove (3) is smaller than the diameter of the stop pin (6). The rear part of the shaft sleeve nut (1) is provided with fine threads (4) like the traditional shaft sleeve nut, the direction of the threads (4) is opposite to the rotating direction of the rotor during normal operation, and the tail part of the shaft sleeve nut is provided with a radial groove (5) for installing the shaft sleeve nut (1) and is used for placing a hook wrench during installation. A pin hole (8) is drilled at a position corresponding to a shaft matched with the shaft sleeve nut (1), the pin hole (8) is in clearance fit with the stop pin (6), and the depth of the pin hole (8) is slightly larger than that of the stop pin (6). An indication hole (9) is drilled on the shaft matched with the shaft sleeve nut, and the indication hole (9) and the pin hole (8) are positioned at the same circumferential position.
During installation, the anti-rust oil is fully coated on the anti-return pin (6) and the pin hole (8) on the shaft, the pin hole (8) faces upwards, the anti-return pin is placed in the pin hole (8), the anti-return pin (6) naturally falls into the bottom of the pin hole (8) due to gravity, the impeller and the shaft sleeve are well arranged and adjusted in axial position, and the shaft sleeve nut (1) is fastened. The retaining pin (6) is far away from the axis due to centrifugal force when the rotor rotates forwards or reversely, and when the retaining pin (6) is opposite to the longitudinal groove (2) on the Ji Zhoutao nut (1), the retaining pin (6) is inserted into the longitudinal groove (2) to clamp the sleeve nut (1).
When the sleeve nut is disassembled, the rotor is rotated to the position where the indication hole (9) faces upwards, and the indication hole (9) and the pin hole (8) are positioned at the same circumferential position, so that the pin hole (8) is also positioned at the upward position, and the retaining pin (6) and the sample in the mounting process naturally fall into the bottom of the pin hole (8) due to gravity, so that the sleeve nut can be withdrawn.
Claims (2)
1. Locknut, its characterized in that: the anti-slip nut comprises a shaft sleeve nut (1) and a non-return pin (6), wherein a plurality of longitudinal grooves (2) are formed in the inner hole wall of the front part of the shaft sleeve nut (1), the width of each longitudinal groove (2) is slightly wider than the diameter of the non-return pin (6), and the depth of each longitudinal groove (2) is smaller than the length of the non-return pin (6); the rear part of the longitudinal groove (2) is provided with an annular process groove (3) for retracting a cutter when the longitudinal groove is processed; the width of the annular process groove (3) is smaller than the diameter of the backstop pin (6); a pin hole (8) is drilled at a position corresponding to the shaft matched with the shaft sleeve nut (1), the pin hole (8) is in clearance fit with the backstop pin (6), and the depth of the pin hole (8) is slightly larger than that of the backstop pin (6).
2. The locksleeve nut of claim 1, wherein: an indication hole (9) is drilled at a position corresponding to the shaft matched with the shaft sleeve nut (1), and the indication hole (9) and the pin hole (8) are positioned at the same circumferential position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434330.4A CN110043551B (en) | 2019-05-23 | 2019-05-23 | Anti-loose shaft sleeve nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434330.4A CN110043551B (en) | 2019-05-23 | 2019-05-23 | Anti-loose shaft sleeve nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043551A CN110043551A (en) | 2019-07-23 |
| CN110043551B true CN110043551B (en) | 2024-03-22 |
Family
ID=67283330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910434330.4A Active CN110043551B (en) | 2019-05-23 | 2019-05-23 | Anti-loose shaft sleeve nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110043551B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735062Y (en) * | 2004-08-27 | 2005-10-19 | 芮万柱 | Bolt connecting coupling lock |
| CN101398028A (en) * | 2008-11-06 | 2009-04-01 | 陈潜 | Nut anti-looseness device |
| KR20100012955A (en) * | 2008-07-30 | 2010-02-09 | 윤택우 | Loose prevention apparatus of bolt and nut |
| CN205895684U (en) * | 2016-02-05 | 2017-01-18 | 广州市昕恒泵业制造有限公司 | Impeller stopping device |
| CN106351971A (en) * | 2015-07-14 | 2017-01-25 | 崔侃 | Radially engaging coupling system |
| CN206175327U (en) * | 2016-10-19 | 2017-05-17 | 广州市冠田真空泵有限公司 | A fastener for preventing bearing returns pine under water pump |
| CN209959682U (en) * | 2019-05-23 | 2020-01-17 | 湖南机电职业技术学院 | Anti-loosening shaft sleeve nut |
-
2019
- 2019-05-23 CN CN201910434330.4A patent/CN110043551B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735062Y (en) * | 2004-08-27 | 2005-10-19 | 芮万柱 | Bolt connecting coupling lock |
| KR20100012955A (en) * | 2008-07-30 | 2010-02-09 | 윤택우 | Loose prevention apparatus of bolt and nut |
| CN101398028A (en) * | 2008-11-06 | 2009-04-01 | 陈潜 | Nut anti-looseness device |
| CN106351971A (en) * | 2015-07-14 | 2017-01-25 | 崔侃 | Radially engaging coupling system |
| CN205895684U (en) * | 2016-02-05 | 2017-01-18 | 广州市昕恒泵业制造有限公司 | Impeller stopping device |
| CN206175327U (en) * | 2016-10-19 | 2017-05-17 | 广州市冠田真空泵有限公司 | A fastener for preventing bearing returns pine under water pump |
| CN209959682U (en) * | 2019-05-23 | 2020-01-17 | 湖南机电职业技术学院 | Anti-loosening shaft sleeve nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110043551A (en) | 2019-07-23 |
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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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240219 Address after: 410151 359 Hunan Mechanical and Electrical Polytechnic, Wanjia Li North Road, Changsha, Hunan Applicant after: HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC Country or region after: China Address before: 410151 359 Hunan Mechanical and Electrical Polytechnic, Wanjia Li North Road, Changsha, Hunan Applicant before: HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC Country or region before: China Applicant before: HUNAN MILUOJIANG PUMP MAKING CO.,LTD. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |