CN114961866A - Anti-drop self-locking high-temperature disc shaft connecting structure - Google Patents
Anti-drop self-locking high-temperature disc shaft connecting structure Download PDFInfo
- Publication number
- CN114961866A CN114961866A CN202210488081.9A CN202210488081A CN114961866A CN 114961866 A CN114961866 A CN 114961866A CN 202210488081 A CN202210488081 A CN 202210488081A CN 114961866 A CN114961866 A CN 114961866A
- Authority
- CN
- China
- Prior art keywords
- bayonet lock
- groove
- screw rod
- locking
- bolt
- 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
- 238000000034 method Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
Abstract
The invention aims to provide an anti-drop self-locking high-temperature disc shaft connecting structure which comprises a connecting shaft, a locking bolt and a disc rotor, wherein the locking bolt comprises a head part and a screw rod which are mutually connected, the screw rod penetrates through a matching hole of the connecting shaft and the disc rotor, the tail part of the screw rod is provided with threads, a locking nut is arranged on the screw rod through the threads, a switching shaft bayonet lock clamping groove is arranged on the connecting shaft, a bolt bayonet lock clamping groove is arranged at the head part of the locking bolt corresponding to the switching shaft clamping groove, and after the screw rod penetrates through the connecting shaft, a bayonet lock for preventing the disc rotor from falling and separating is arranged in the switching shaft bayonet lock clamping groove and the bolt bayonet lock clamping groove. The invention has the advantages of simple design, convenient assembly and disassembly and the like, and realizes the purposes of single-side anti-drop of the large-diameter rotor and the wheel disc rotor in overturn and mechanical locking anti-drop.
Description
Technical Field
The invention relates to a gas turbine connecting structure, in particular to a high-temperature wheel disc and shaft connecting structure of a gas turbine.
Background
In order to obtain higher power, in addition to increasing in size, the number of stages of the rotor of the gas turbine is also increasing, which makes the connection between the disk and the connecting shaft difficult. The disk serves as a critical part of the gas turbine, and the reliability of the connection to the output shaft is crucial to the safe operation of the gas turbine. The wheel disc operates in high temperature and high rotating speed environment, the centrifugal force is large, the expansion amount is high, the transmission torque is large, and if the wheel disc is separated from the connecting shaft in a loosening way, serious consequences of machine damage and human death can be caused. Therefore, how to design a set of disc shaft connecting structure is important for reliable disc shaft connection under the conditions of ensuring centering, torque transmission, high temperature resistance and convenient assembly and disassembly.
Disclosure of Invention
The invention aims to provide an anti-drop self-locking high-temperature disc shaft connecting structure which can realize the purposes of single-side anti-drop of a large-diameter rotor and a disc rotor in turnover, mechanical locking and looseness prevention and the like.
The purpose of the invention is realized as follows:
the invention relates to an anti-drop self-locking high-temperature disc shaft connecting structure, which is characterized in that: including connecting axle, locking bolt, rim plate rotor, locking bolt includes interconnect's head and screw rod, and the screw rod passes the mating holes of connecting axle and rim plate rotor, and the afterbody of screw rod sets up the screw thread, and lock nut passes through the screw thread to be installed on the screw rod, sets up switching axle bayonet lock draw-in groove on the connecting axle, sets up bolt bayonet lock draw-in groove rather than the head position of the locking bolt who corresponds, and after the screw rod passed the connecting axle, the bayonet lock that the separation dropped in rim plate rotor upset in-process was prevented in the installation in switching axle bayonet lock draw-in groove and the bolt bayonet lock draw-in groove.
The present invention may further comprise:
1. and cutting an anti-rotation platform beside the bolt clamping pin clamping groove at the head part of the locking bolt.
2. The cutting depth of the anti-rotation platform is 2.5mm, the diameter of the clamping groove of the bolt clamping pin is phi 2.5mm, and the diameter of the clamping groove of the switching shaft clamping pin is phi 2.5 mm.
3. The screw rod of the locking bolt is a taper screw rod, and the taper of the taper screw rod is 1: 50.
4. The screw thread end of screw rod afterbody sets up the anticreep draw-in groove, sets up the anticreep cardboard in lock nut, and lock nut screws the back, in the anticreep cardboard embedding anticreep draw-in groove.
5. The bayonet lock is cylindrical, one end of the bayonet lock is provided with a bending clamping head, the other end of the bayonet lock is a straight bayonet lock, the straight bayonet lock is partially positioned in the bayonet lock clamping groove of the switching shaft and the bayonet lock clamping groove of the bolt, and the diameter of the bayonet lock 5 is phi 2.5 mm.
6. A tool withdrawal groove is arranged beside the clamping groove of the connecting shaft clamping pin of the connecting shaft, and the diameter of the tool withdrawal groove 14 is phi 2 mm.
7. And a force unloading groove is arranged on the opposite side of the clamping groove of the switching shaft bayonet lock of the switching shaft.
The invention has the advantages that: the invention has the advantages of simple design, convenient assembly and disassembly and the like, and realizes the purposes of preventing the large-diameter rotor and the wheel disc rotor from falling off at the single side of the turnover and locking the machine.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a schematic view of a locking bolt;
FIG. 3 is a schematic view of a locking nut;
FIG. 4 is a schematic view of the bayonet;
FIG. 5 is a schematic view of an adapter shaft;
fig. 6 is an assembly view of the locking structure.
Detailed Description
The invention is described in more detail below by way of example with reference to the accompanying drawings:
the first implementation mode comprises the following steps: the embodiment is described with reference to fig. 1 and fig. 6, and the anti-drop self-locking high-temperature disk shaft connecting structure in the embodiment mainly comprises a locking bolt 1, an adapter shaft 2, a disk rotor 3, a locking bolt 4 and a bayonet 5. The locking bolt 1 passes the mating holes of the connecting shaft 2 and the wheel disc rotor 3, the bayonet 5 passes through the clamping groove space formed by the bolt bayonet clamping groove 7 and the connecting shaft bayonet clamping groove 13, the locking bolt 1 which is not screwed is prevented from falling and separating in the overturning process of the wheel disc rotor 3, and the locking nut 4 is screwed with the locking bolt 1. Other components and connection modes are the same as those of the first embodiment.
The second embodiment: the present embodiment is described with reference to fig. 2, and the present embodiment further defines the lockbolt 1 according to the first embodiment, in the present embodiment, a rotation preventing platform 6 is provided on one side of the lockbolt 1, and after the lockbolt 1 passes through the connecting shaft 2 and the locknut 4 is screwed, the plane of the rotation preventing platform can prevent the lockbolt 1 and the locknut 4 from rotating simultaneously and not being screwed tightly. Other components and connection modes are the same as those of the first embodiment.
The cutting depth of the rotation prevention platform 6 in this embodiment is 2.5 mm.
The third embodiment is as follows: the embodiment is described with reference to fig. 2, and the embodiment further defines the locking bolt 1 according to the first embodiment, in the embodiment, the rotation-preventing platform 6 of the locking bolt 1 is provided with a bolt bayonet catch 7, after the locking bolt 1 passes through the adapting shaft 2, the bolt bayonet catch 7 on the locking bolt is matched with the adapting shaft bayonet catch 13 to form a catch, and the bayonet 5 is inserted into the catch to prevent the locking bolt 1 from separating from the adapting shaft 2. Other components and connection modes are the same as those of the first embodiment.
The diameter of the clamping groove of the clamping pin in the embodiment is phi 2.5 mm.
The fourth embodiment: the present embodiment will be described with reference to fig. 2, and the present embodiment further defines the lockbolt 1 described in the first embodiment, and in the present embodiment, the tapered screw 8 of the lockbolt 1 is tapered to transmit torque. Other components and connection modes are the same as those of the first embodiment.
The taper of the tapered screw in this embodiment is 1: 50.
The fifth embodiment: the embodiment is described with reference to fig. 2, and the embodiment further defines the lockbolt 1 according to the first embodiment, in the embodiment, the thread end of the lockbolt 1 is provided with the anti-drop clamp groove 9, and after the locknut 4 is screwed, the anti-drop clamp plate 10 of the locknut 4 is pressed and embedded to play a role of mechanical anti-drop. Other components and connection modes are the same as those of the first embodiment.
Embodiment six: the embodiment is described with reference to fig. 3, and the embodiment further defines the locknut 4 described in the first embodiment, in the embodiment, the locknut 4 is provided with an anti-drop snap-gauge 10, and after the locknut 4 is screwed, the anti-drop snap-gauge is matched with the anti-drop snap-gauge 9 at the end of the thread of the lockbolt 1 to play a role of mechanical anti-drop. Other components and connection modes are the same as those of the first embodiment.
Embodiment seven: the embodiment is described with reference to fig. 4, and the embodiment further defines the bayonet 5 described in the first embodiment, in the embodiment, the bayonet 5 is cylindrical, one end of the bayonet is provided with a bending chuck 11, and the other end of the bayonet is provided with a straight chuck 12, after the locking bolt 1 is inserted into the adapting shaft 2, the straight chuck 12 is inserted from the bayonet chuck and bends the straight chuck 12, so as to prevent the locking bolt 1 which is not tightened from falling off in the process of overturning the wheel disc rotor 3. Other components and connection modes are the same as those of the first embodiment.
The diameter of the bayonet 5 in this embodiment is 2.5 mm.
The eighth embodiment: the present embodiment will be described with reference to fig. 5, and the present embodiment further defines the adapting shaft 2 described in the first embodiment, and in the present embodiment, a adapting shaft bayonet catch 13 is milled on one side of the adapting shaft 2 for engaging with the bayonet 5. Other components and connection modes are the same as those of the first embodiment.
The diameter of the bayonet lock groove in the embodiment is phi 2.5 mm.
The ninth embodiment: the present embodiment is described with reference to fig. 5, and the present embodiment further defines the adapting shaft 2 described in the first embodiment, and in the present embodiment, a relief groove 14 is milled beside the adapting shaft bayonet lock groove 13, and the locking bolt 1 and the adapting shaft 2 are ensured to be tightly and firmly contacted. Other components and connection modes are the same as those of the first embodiment.
The diameter of the relief groove 14 in this embodiment is Φ 2 mm.
Embodiment ten: the present embodiment is described with reference to fig. 5, and the present embodiment further defines the adapting shaft 2 according to the first embodiment, and in the present embodiment, a force-releasing groove 15 is milled on the other side of the adapting shaft 2, so as to prevent stress concentration, reduce the service life of components, and ensure that the adapting shaft 2 and the disc rotor 3 are tightly and firmly contacted. Other components and connection modes are the same as those of the first embodiment.
The diameter of the force-discharging groove 15 in this embodiment is Φ 3 mm.
Claims (8)
1. The utility model provides an anticreep auto-lock high temperature dish hub connection structure, characterized by: including connecting axle, locking bolt, rim plate rotor, the locking bolt includes interconnect's head and screw rod, and the screw rod passes the mating holes of connecting axle and rim plate rotor, and the afterbody of screw rod sets up the screw thread, and lock nut passes through the screw thread to be installed on the screw rod, sets up switching axle bayonet lock draw-in groove on the connecting axle, sets up bolt bayonet lock draw-in groove rather than the head position of the locking bolt who corresponds, and after the screw rod passed the connecting axle, the bayonet lock that prevents the separation that drops in rim plate rotor upset in-process was installed in switching axle bayonet lock draw-in groove and bolt bayonet lock draw-in groove.
2. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: and cutting an anti-rotation platform beside the bolt clamping pin clamping groove at the head part of the locking bolt.
3. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 2, which is characterized in that: the cutting depth of the anti-rotation platform is 2.5mm, the diameter of the clamping groove of the bolt clamping pin is phi 2.5mm, and the diameter of the clamping groove of the switching shaft clamping pin is phi 2.5 mm.
4. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: the screw rod of the locking bolt is a taper screw rod, and the taper of the taper screw rod is 1: 50.
5. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: the screw thread end of screw rod afterbody sets up the anticreep draw-in groove, sets up the anticreep cardboard in lock nut, and lock nut screws the back, in the anticreep cardboard embedding anticreep draw-in groove.
6. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: the bayonet lock is cylindrical, one end of the bayonet lock is provided with a bending clamping head, the other end of the bayonet lock is a straight bayonet lock, the straight bayonet lock is partially positioned in the bayonet lock clamping groove of the switching shaft and the bayonet lock clamping groove of the bolt, and the diameter of the bayonet lock 5 is phi 2.5 mm.
7. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: a tool withdrawal groove is arranged beside a clamping groove of a clamping pin of the switching shaft, and the diameter of the tool withdrawal groove 14 is phi 2 mm.
8. The anti-drop self-locking high-temperature disc shaft connecting structure according to claim 1, which is characterized in that: and a force unloading groove is arranged on the opposite side of the bayonet lock groove of the switching shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210488081.9A CN114961866A (en) | 2022-05-06 | 2022-05-06 | Anti-drop self-locking high-temperature disc shaft connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210488081.9A CN114961866A (en) | 2022-05-06 | 2022-05-06 | Anti-drop self-locking high-temperature disc shaft connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114961866A true CN114961866A (en) | 2022-08-30 |
Family
ID=82970903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210488081.9A Pending CN114961866A (en) | 2022-05-06 | 2022-05-06 | Anti-drop self-locking high-temperature disc shaft connecting structure |
Country Status (1)
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|---|---|
| CN (1) | CN114961866A (en) |
Citations (25)
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|---|---|---|---|---|
| GB190217207A (en) * | 1902-08-05 | 1902-10-09 | James Bottrell Uren | Improvements in Nut Locks |
| GB190812603A (en) * | 1908-06-12 | 1909-02-25 | Julius Samuel Conradi | Improvements relating to Lock-nut Devices. |
| US2764266A (en) * | 1953-02-06 | 1956-09-25 | Rolls Royce | Separable joints |
| CH442872A (en) * | 1965-11-08 | 1967-08-31 | Meier Ernst | Screw locking |
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| JP2007010132A (en) * | 2005-06-29 | 2007-01-18 | Otake:Kk | Drop-off preventive bolt and nut |
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| CN109098773A (en) * | 2018-08-24 | 2018-12-28 | 哈尔滨电气股份有限公司 | A kind of novel wheel disk of turbine variable cross-section bolt fastening structure and attaching method thereof |
| CN110360234A (en) * | 2019-07-09 | 2019-10-22 | 中国航发哈尔滨东安发动机有限公司 | A kind of torsion pass Axile connection structure |
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| CN111485954A (en) * | 2020-04-16 | 2020-08-04 | 中国航发沈阳发动机研究所 | Rotor wheel disc assembling structure and assembling method thereof |
| CN212028295U (en) * | 2020-04-21 | 2020-11-27 | 刘启超 | From locking fastening components that takes off of card formula |
| CN212202631U (en) * | 2020-03-25 | 2020-12-22 | 中国航发哈尔滨东安发动机有限公司 | Interstage connection structure of engine compressor rotor |
| CN112284701A (en) * | 2020-10-16 | 2021-01-29 | 中国航发四川燃气涡轮研究院 | Switching structure for engine wheel disc rotation test |
| CN213156211U (en) * | 2020-06-24 | 2021-05-11 | 北京市春立正达医疗器械股份有限公司 | Curved acetabular bone file device and connecting assembly capable of retracting knife thereof |
| CN214331239U (en) * | 2020-12-07 | 2021-10-01 | 成都新航工业科技有限公司 | Bearing adapter sleeve |
| CN215057874U (en) * | 2021-06-18 | 2021-12-07 | 镇江市博驰汽车配件有限公司 | Hydraulic motor output shaft suitable for different transmission shafts |
-
2022
- 2022-05-06 CN CN202210488081.9A patent/CN114961866A/en active Pending
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|---|---|---|---|---|
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| GB190812603A (en) * | 1908-06-12 | 1909-02-25 | Julius Samuel Conradi | Improvements relating to Lock-nut Devices. |
| US2764266A (en) * | 1953-02-06 | 1956-09-25 | Rolls Royce | Separable joints |
| CH442872A (en) * | 1965-11-08 | 1967-08-31 | Meier Ernst | Screw locking |
| US5052891A (en) * | 1990-03-12 | 1991-10-01 | General Motors Corporation | Connection for gas turbine engine rotor elements |
| US6908270B1 (en) * | 1999-07-12 | 2005-06-21 | Iwata Bolt Kabushiki Kaisha | Self-locking bolt |
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| JP2007010132A (en) * | 2005-06-29 | 2007-01-18 | Otake:Kk | Drop-off preventive bolt and nut |
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| CN213156211U (en) * | 2020-06-24 | 2021-05-11 | 北京市春立正达医疗器械股份有限公司 | Curved acetabular bone file device and connecting assembly capable of retracting knife thereof |
| CN112284701A (en) * | 2020-10-16 | 2021-01-29 | 中国航发四川燃气涡轮研究院 | Switching structure for engine wheel disc rotation test |
| CN214331239U (en) * | 2020-12-07 | 2021-10-01 | 成都新航工业科技有限公司 | Bearing adapter sleeve |
| CN215057874U (en) * | 2021-06-18 | 2021-12-07 | 镇江市博驰汽车配件有限公司 | Hydraulic motor output shaft suitable for different transmission shafts |
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