CN210232847U - Dismounting device for radial transmission shaft - Google Patents
Dismounting device for radial transmission shaft Download PDFInfo
- Publication number
- CN210232847U CN210232847U CN201920357716.5U CN201920357716U CN210232847U CN 210232847 U CN210232847 U CN 210232847U CN 201920357716 U CN201920357716 U CN 201920357716U CN 210232847 U CN210232847 U CN 210232847U
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- transmission shaft
- adapter
- adjusting nut
- radial transmission
- expansion sleeve
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Abstract
The utility model provides a dismouting device for radial transmission shaft for the special assembly and disassembly tools of radial transmission shaft satisfies the operation requirement of installation and maintenance in the aeroengine, mainly includes screw rod, manual adjusting nut, axle sleeve and adapter. The utility model discloses utilize the produced frictional force of adapter expansion cover and radial transmission shaft cavity internal surface direct contact to accomplish the transport of radial transmission shaft and place, and this kind of contact degree can be adjusted by manual adjusting nut. The utility model develops a tool for assembling and disassembling a radial transmission shaft in an aero-engine based on the principle that expansion is in direct proportion to friction force, and effectively realizes the assembly and disassembly in a narrow closed space; two adapters are arranged to meet the operation requirements of different structural parts of the radial transmission shaft; the expansion degree of the adapter can be adjusted by adopting the manual adjusting nut, the structure is simple, and the operation is convenient; the manual adjusting nut is circumferentially provided with a knurl and a common wrench face, so that the operation requirements of different expansion forces are met.
Description
Technical Field
The utility model relates to a space equipment detects technical field, specifically, relates to the assembly and disassembly tools of aeroengine radial transmission shaft.
Background
The aircraft engine comprises three core parts of a compressor, a combustion chamber and a turbine, and also comprises an auxiliary gear box, wherein a radial transmission shaft is positioned between a main shaft of the compressor and an output shaft of the auxiliary gear box in a radial arrangement and is used for power transmission of the main shaft and the output shaft of the auxiliary gear box, and the shaft is hollow and is respectively connected with a gear shaft and a compressor shaft through splines at two ends. In the starting stage of the aircraft engine, the radial transmission shaft transmits the power transmitted by the hydraulic starting motor to the main shaft of the compressor so as to accelerate the rotation of the main shaft of the compressor and suck air; after the compressor shaft reaches the self-sustaining rotation speed, the hydraulic starting motor is disconnected, and the radial transmission shaft reversely transmits the rotation motion of the compressor shaft to the auxiliary gear box. When the auxiliary gear box is installed, the radial transmission shaft slowly enters from the inlet at the lower end of the auxiliary gear box, and extends upwards along the support plate of the compressor front casing in the six o' clock direction until the lower end surface of the shaft penetrates through the clamping ring groove at the inlet of the auxiliary gear box. Because the radial transmission shaft is positioned in a slender closed space formed by the front casing support plate and the upper part of the auxiliary gear box, if a conventional tool is adopted, no operation space and no stress point exist. Therefore, a special tool needs to be designed to complete the assembling and disassembling of the radial transmission shaft.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a special assembly and disassembly tools for radial transmission shaft among the aeroengine.
According to the utility model provides a pair of a dismouting device for radial transmission shaft, including adapter, axle sleeve, screw rod and adjusting nut, wherein:
one end of the screw is in threaded connection with the adjusting nut, and the other end of the screw is in threaded connection with the adapter;
the shaft sleeve is sleeved in the middle of the screw rod, and two ends of the shaft sleeve are respectively attached to the adapter and the adjusting nut;
the adapter is provided with an expansion sleeve, and the expansion degree of the expansion sleeve is adjusted by adjusting the position of the adjusting nut on the screw rod.
Preferably, one end of the screw is further provided with a stretching pin, and the stretching pin penetrates through the end of the screw and is perpendicular to the screw.
Preferably, the outer circumferential surface of the adjusting nut is milled with two symmetrical planes.
Preferably, the outer circumferential surface of the adjusting nut is provided with knurling.
Preferably, the adapter comprises a metal adapter comprising a tapered bolt and a tapered metal expansion shell, wherein:
one end of the conical bolt is in threaded connection with the other end of the screw rod, and the other end of the conical bolt is connected with the conical metal expansion sleeve;
the end face of the conical metal expansion sleeve is attached to the end part of the shaft sleeve.
Preferably, the taper of the taper bolt is larger than that of the taper metal expansion sleeve.
Preferably, a plurality of grooves are distributed in the circumferential direction of the conical metal expansion sleeve, and rubber is embedded in the grooves.
Preferably, the adapter comprises a rubber adapter comprising a hex bolt, a washer and a rubber expansion sleeve, wherein:
one end of the hexagon bolt is in threaded connection with the other end of the screw rod, and the other end of the hexagon bolt is connected with the gasket;
the rubber expansion sleeve is embedded in the gasket rabbet.
Preferably, the rubber expansion sleeve further comprises a flat gasket, and the flat gasket is arranged at the end part of the rubber expansion sleeve.
Preferably, the outer diameter of the spacer is larger than the inner diameter of the bushing.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model develops a radial transmission shaft dismounting tool based on the principle that expansion is in direct proportion to friction force, and effectively realizes the mounting and dismounting of the radial transmission shaft in a narrow closed space;
2. the utility model is provided with two adapters, which can meet the operation requirements of different structural parts of the radial transmission shaft;
3. the utility model adopts the adjusting nut to adjust the expansion degree of the adapter, and has simple structure and convenient operation;
4. the utility model discloses an adjusting nut circumference sets up annular knurl and wrench face commonly used, satisfies the operation demand of different bulging force.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a rubber adapter of the present invention;
FIG. 3 is a schematic view of the metal adapter of the present invention;
FIG. 4 is a schematic view illustrating the operation of removing the radial outdrive according to the present invention;
fig. 5 is an operation schematic diagram of the present invention for removing the radial transmission shaft.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1 to 5, according to the utility model provides a dismouting device for radial transmission shaft, including adapter 1, axle sleeve 2, screw rod 3 and manual adjusting nut 4, be equipped with tensile round pin 5 on screw rod 4.
The screw rod 1 is a slender rod, threads are arranged at two ends of the slender rod, and an equal-diameter polished rod is arranged in the middle of the slender rod. One end is external thread and is connected with the manual adjusting nut 4, and the other end is internal thread and is connected with the adapter 1.
The circumferential round surface of the manual adjusting nut 4 is milled with two symmetrical planes for matching with a common wrench tool to use, and the residual circumferential round surface is provided with knurls for manual adjustment. The shaft sleeve 2 is a distance shaft sleeve and is in clearance fit with the screw rod 1, and two end faces of the shaft sleeve are tightly attached to the manual adjusting nut 4 and the adapter 1 respectively.
The adapter 1 is divided into a rubber adapter 11 and a metal adapter 12, and is directly contacted with the inner surface of the radial transmission shaft 6 or the shaft sleeve 7, and the contact degree of the two can be changed by adjusting the expansion part.
As shown in fig. 2, the rubber adapter 11 is composed of a hexagon socket head cap screw 111, a large gasket 112, a rubber expansion sleeve 113 and a flat gasket 114, the rubber expansion sleeve 113 is embedded in the spigot of the large gasket 112, and the hexagon socket head cap screw 111 is screwed into the screw 3, so that the large gasket 112 is tightly attached to the shaft sleeve 2.
As shown in fig. 3, the metal adapter 12 is composed of a tapered bolt 121 and a tapered metal expansion sleeve 122, wherein the taper of the bolt 121 is slightly larger than that of the expansion sleeve 122, eight grooves are uniformly distributed in the circumferential direction of the expansion sleeve 122, and rubber is embedded in the grooves to increase the allowable deformation amount of the expansion sleeve. The bolt 121 is screwed into the screw rod 3, so that the end face of the expansion sleeve 122 is tightly attached to the shaft sleeve 2.
As shown in fig. 4, the radial transmission shaft is composed of a spline shaft 6 and a shear shaft sleeve 7, and the operation method of removing the shear shaft sleeve 7 is shown and utilized in the figure. The sleeve 7 is thin and is easily deformed by a large expansion force, so that the rubber adapter 11 is selected. The manual adjusting nut 4 is firstly screwed out rightwards until the external thread on the screw rod 3 is not seen, and at the moment, the rubber expansion sleeve 113 is in a free state. When the tool enters the expansion sleeve 113 along the inlet to reach the position of the shaft sleeve 7, the manual adjusting nut 4 is rotated reversely to enable the expansion sleeve 113 to be in close contact with the inner surface of the shaft sleeve 7, and at the moment, the shaft sleeve 7 can be detached by pulling the pin 5 with a hand.
As shown in fig. 5, this figure shows the operation method of removing the radial transmission shaft 6 by using the present invention. Because the two ends of the radial transmission shaft 6 are both provided with splines, the radial transmission shaft can be detached only by large force, and therefore the metal type adapter 12 is selected. The manual adjusting nut 4 is screwed out rightwards until the external thread on the screw rod 3 is not seen, and at the moment, the metal expansion sleeve 122 is in a free state. When the tool enters the expansion sleeve 122 along the inlet to reach the position of the radial transmission shaft 6, the manual adjusting nut 4 is rotated reversely to enable the expansion sleeve 122 to be in close contact with the inner surface of the radial transmission shaft 6, and at the moment, the radial transmission shaft 6 can be detached by pulling the telescopic pin 5 with a hand and adjusting the small angle at the same time.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a dismouting device for radial transmission shaft which characterized in that, includes adapter, axle sleeve, screw rod and adjusting nut, wherein:
one end of the screw is in threaded connection with the adjusting nut, and the other end of the screw is in threaded connection with the adapter;
the shaft sleeve is sleeved in the middle of the screw rod, and two ends of the shaft sleeve are respectively attached to the adapter and the adjusting nut;
the adapter is provided with an expansion sleeve, and the expansion degree of the expansion sleeve is adjusted by adjusting the position of the adjusting nut on the screw rod.
2. The device for assembling and disassembling a radial transmission shaft according to claim 1, wherein a stretching pin is further provided at one end of the screw rod, and the stretching pin penetrates through the end of the screw rod and is arranged perpendicular to the screw rod.
3. A mounting/dismounting device for a radial drive shaft according to claim 1, characterised in that the outer peripheral surface of the adjusting nut is milled with two planes of symmetry.
4. The device as claimed in claim 1, wherein the adjusting nut is provided with knurling on its outer circumferential surface.
5. The assembly and disassembly device for a radial drive shaft of claim 1, wherein the adapter comprises a metal adapter comprising a tapered bolt and a tapered metal expansion sleeve, wherein:
one end of the conical bolt is in threaded connection with the other end of the screw rod, and the other end of the conical bolt is connected with the conical metal expansion sleeve;
the end face of the conical metal expansion sleeve is attached to the end part of the shaft sleeve.
6. The device for dismounting a radial transmission shaft according to claim 5, wherein the taper of the tapered bolt is larger than that of the tapered metal expansion sleeve.
7. The device for assembling and disassembling a radial transmission shaft according to claim 5, wherein a plurality of grooves are circumferentially distributed on the conical metal expansion sleeve, and rubber is embedded in the grooves.
8. The assembly and disassembly device for a radial drive shaft of claim 1, wherein the adapter comprises a rubber adapter comprising a hex bolt, a washer, and a rubber expansion sleeve, wherein:
one end of the hexagon bolt is in threaded connection with the other end of the screw rod, and the other end of the hexagon bolt is connected with the gasket;
the rubber expansion sleeve is embedded in the gasket rabbet.
9. The assembly and disassembly device for a radial drive shaft of claim 8, further comprising a flat gasket disposed at an end of the rubber expansion sleeve.
10. The assembly and disassembly apparatus for a radial drive shaft of claim 8, wherein the outer diameter of the spacer is larger than the inner diameter of the bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920357716.5U CN210232847U (en) | 2019-03-20 | 2019-03-20 | Dismounting device for radial transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920357716.5U CN210232847U (en) | 2019-03-20 | 2019-03-20 | Dismounting device for radial transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210232847U true CN210232847U (en) | 2020-04-03 |
Family
ID=69961915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920357716.5U Active CN210232847U (en) | 2019-03-20 | 2019-03-20 | Dismounting device for radial transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210232847U (en) |
-
2019
- 2019-03-20 CN CN201920357716.5U patent/CN210232847U/en active Active
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