CN216000291U - Adjustable steam turbine impeller assembling shaft sleeve - Google Patents
Adjustable steam turbine impeller assembling shaft sleeve Download PDFInfo
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- CN216000291U CN216000291U CN202122681209.7U CN202122681209U CN216000291U CN 216000291 U CN216000291 U CN 216000291U CN 202122681209 U CN202122681209 U CN 202122681209U CN 216000291 U CN216000291 U CN 216000291U
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- outer shaft
- steam turbine
- shaft
- shaft cover
- thrust bearing
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Abstract
The utility model discloses a steam turbine impeller assembly axle sleeve with adjustable belongs to the mechanical field in the electric power energy trade. An adjustable steam turbine impeller assembling shaft sleeve comprises an inner shaft, an inner shaft cover, an outer shaft, a first outer shaft cover, a second outer shaft cover, a thrust bearing and a screw rod; the outer shaft sleeve is arranged on the inner shaft and can freely slide on the inner shaft, the first outer shaft cover is arranged at the end part of the outer shaft, a thrust bearing is arranged between the second outer shaft cover and the first outer shaft cover, the thrust bearing is arranged on the lead screw, one end of the lead screw is connected with the inner shaft through the inner shaft cover, the other end of the lead screw is provided with a locking device for locking, one end of the connecting rod is connected with the outer part of the outer shaft through a pin shaft, the other end of the connecting rod is connected with the supporting rod, the end part of the supporting rod is connected with the top plate, and the top plate is fixed on the workbench. The utility model discloses an axle sleeve size is adjustable, and the commonality is good, and the size laminating is good.
Description
Technical Field
The utility model relates to a machinery in the electric power energy trade, specifically speaking relates to a steam turbine impeller assembly axle sleeve with adjustable.
Background
The turbine wheel is an important component of the turbine rotor, and the blades need to be assembled separately before being sleeved on the turbine rotor. When the blades are assembled, the impeller needs to be erected, is positioned by matching the inner circle of the impeller with the outer circle of the shaft sleeve and is arranged on the impeller assembling shaft sleeve. The impeller assembly shaft sleeve that uses at present is fixed axle sleeve, and the axle sleeve excircle is unadjustable promptly. However, the size of the inner circle of the common turbine impeller is usually different from phi 200 to phi 500, so that the universality of the conventional fixed shaft sleeve is poor and the outer diameter of the shaft sleeve can not be adjusted. Even if a plurality of shaft sleeves of different sizes are manufactured, the complete fit of the sizes cannot be ensured. Therefore, a simple and efficient device is urgently needed, and the problems of poor universality and difficulty in complete matching of sizes are solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an adjustable steam turbine impeller assembly axle sleeve, this axle sleeve size is adjustable, and the commonality is good, and the size laminating is good.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an adjustable steam turbine impeller assembling shaft sleeve comprises an inner shaft, an inner shaft cover, an outer shaft, a first outer shaft cover, a second outer shaft cover, a thrust bearing and a screw rod; the outer shaft sleeve is arranged on the inner shaft and can freely slide on the inner shaft, the first outer shaft cover is arranged at the end part of the outer shaft, a thrust bearing is arranged between the second outer shaft cover and the first outer shaft cover, the thrust bearing is arranged on the lead screw, one end of the lead screw is connected with the inner shaft through the inner shaft cover, the other end of the lead screw is provided with a locking device for locking, one end of the connecting rod is connected with the outer part of the outer shaft through a pin shaft, the other end of the connecting rod is connected with the supporting rod, the end part of the supporting rod is connected with the top plate, and the top plate is fixed on the workbench.
In a further technical scheme, the excircle of the inner shaft is matched with the inner circle of the outer shaft.
According to a further technical scheme, the outer ring of the outer shaft is uniformly provided with a plurality of blocks in the circumferential direction, mounting holes are formed in the blocks, and the blocks are connected with the connecting rod through pin shafts.
In a further technical scheme, the number of the strip-shaped blocks is four.
According to the further technical scheme, the mounting holes are close to two end parts of the strip-shaped block.
According to the further technical scheme, the end part of the supporting rod is provided with a roller, the roller is installed in a sliding groove of the top plate, and the roller can slide up and down in the sliding groove.
According to the further technical scheme, the screw rod is provided with a circular boss for mounting the thrust bearing, threads are arranged on two sides of the boss, and one end of the boss is provided with a hexagonal rod matched with the wrench.
In a further technical scheme, the locking device is a locking nut.
According to the further technical scheme, the outer portion of the supporting rod is arc-shaped and matched with the inner circle of the impeller.
According to a further technical scheme, the first outer shaft cover and the first outer shaft cover are provided with concave rabbets which are matched with the thrust bearing.
Advantageous effects
Compared with the prior art, the utility model has the advantages of it is as follows showing:
1. the utility model discloses an axle sleeve is adjustable, and the commonality is good, turns into the radial displacement of bracing piece through the axial displacement of connecting rod with outer axle to the impeller of circle size in the adaptation difference, the bracing piece outside is circular-arc, can laminate completely with the impeller.
2. The utility model discloses a locking through locking device after the axle sleeve adjustment to required size ensures that whole device can not rock. Through the design of the screw rod and the locking device, the radial stress of the shaft sleeve is converted into the axial force applied to the screw rod and the locking nut, and the workpiece is sufficiently supported.
3. The utility model discloses an axle sleeve erects various steam turbine impellers and installs the assembly on the workstation, has very strong commonality, and ensures that the clamping is more firm stable, can replace a large amount of unadjustable axle sleeves among the prior art, has promoted efficiency by a wide margin, makes the clamping more stable simultaneously.
4. The utility model discloses when the impeller assembly for circle in the tight impeller is pasted completely to the axle sleeve, has solved the current problem of preparing multiunit frock and still can't guarantee the complete complex of size.
5. The utility model provides high work efficiency has practiced thrift the cost, has promoted the quality of blade assembly simultaneously.
Drawings
FIG. 1 is a schematic structural view of a turbine wheel;
FIG. 2 is a cross-sectional view (without a table) of the present invention;
FIG. 3 is a front view (without a table) of the present invention;
FIG. 4 is a front view of the present invention (with a working table)
FIG. 5 is a side view of the present invention (with a working table)
FIG. 6 is a perspective view of the present invention (with a working table)
FIG. 7 is a schematic view of the inner shaft;
FIG. 8 is a schematic structural view of an outer shaft;
FIG. 9 is a schematic structural view of a first outer shaft cover;
FIG. 10 is a side view of the first outer shaft cover
FIG. 11 is a schematic structural view of a second outer shaft cover;
FIG. 12 is a side view of the second outer shaft cover;
FIG. 13 is a schematic structural view of a lead screw;
FIG. 14 is a schematic structural view of a support rod;
FIG. 15 is a schematic view of the top plate;
fig. 16 is a schematic structural view of the assembled impeller of the present invention.
The labels in the figure are: 1-inner shaft, 2-inner shaft cover, 3-outer shaft, 4-first outer shaft cover, 5-second outer shaft cover, 6-thrust bearing, 7-lead screw, 8-locking device, 9-connecting rod, 10-supporting rod, 11-pin shaft, 12-top plate, 13-workbench, 14-bar block, 15-mounting hole, 16-boss, 17-thread, 18-hexagonal rod, 19-chute, 20 and impeller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1-16, an adjustable steam turbine impeller assembling shaft sleeve comprises an inner shaft 1, an inner shaft cover 2, an outer shaft 3, a first outer shaft cover 4, a second outer shaft cover 5, a thrust bearing 6 and a screw rod 7; the outer shaft 3 is sleeved on the inner shaft 1 and can freely slide on the inner shaft 1, the first outer shaft cover 4 is arranged at the end part of the outer shaft 3, a thrust bearing 6 is arranged between the second outer shaft cover 5 and the first outer shaft cover 4, the thrust bearing 6 is arranged on the lead screw 7, one end of the lead screw 7 is connected with the inner shaft 1 through the inner shaft cover 2, the other end of the lead screw 7 is provided with a locking device 8 for locking, one end of the connecting rod 9 is connected with the outside of the outer shaft 3 through a pin shaft 11, the other end of the connecting rod is connected with the supporting rod 10, the end part of the supporting rod 10 is connected with the top plate 12, and the top plate 12 is fixed on the workbench 13.
The excircle of the inner shaft 1 is matched with the inner circle of the outer shaft.
The outer ring of the outer shaft 3 is uniformly provided with a plurality of blocks 14 in the circumferential direction, and the blocks are provided with mounting holes 15 and connected with the connecting rod 9 through pin shafts 11.
The number of the bar-shaped blocks 14 is four.
The mounting holes 15 are near both ends of the bar block 14.
The end of the supporting rod 10 is provided with a roller, the roller is arranged in the sliding groove 19 of the top plate 12, the roller can slide up and down in the sliding groove 19, the supporting rod and the top plate are guaranteed to be always in a fit state, and meanwhile, the installation is convenient.
The screw rod 7 is provided with a circular boss 16 for mounting the thrust bearing 6, so that the thrust bearing is matched with the first outer shaft cover and the second outer shaft cover to apply axial thrust, and threads 17 are arranged on two sides of the boss 16. The long thread at the left end is used for realizing the axial position movement of the screw rod and can move for a long stroke. The short screw thread of right-hand member is used for installing locking device, realizes the locking of whole axle sleeve, and the one end of lead screw is equipped with the hexagon pole 18 with spanner complex, when needs adjusting device distance, rotates here hexagon pole with the spanner and can.
The locking device 8 is a locking nut.
The outer part of the support rod 10 is arc-shaped and matched with the inner circle of the impeller. The impeller can be matched with the inner circles of the impellers in various sizes in a tangent mode, and the workpiece is guaranteed to be installed firmly and stably.
First outer shaft lid 4 and first outer shaft lid 4 on all be equipped with the concave tang, cooperate with thrust bearing 6, guarantee that outer axle and lead screw are in unanimous relative position to realize the axial position removal of outer axle through rotatory lead screw.
The utility model discloses an one end of interior axle is used for being connected with the workstation, and the other end is used for supporting the main part of whole device. The excircle of the outer shaft is matched with the inner circle of the outer shaft, so that the outer shaft can freely slide on the inner shaft. The end face of the inner shaft is provided with a screw hole for connecting with the inner shaft cover. The screw thread on the inner shaft cover is used for connecting the screw rod, and the axial movement of the screw rod is realized.
The utility model discloses a be connected between outer axle, connecting rod, the bracing piece, the axial displacement who will be outer axle converts the bracing piece radial displacement to the impeller of circle size in the adaptation difference.
The working process of the utility model is as follows:
1. the worktable is placed stably in a working area, and the distance between the support rods is adjusted to be slightly smaller than the inner circle of the impeller.
2. And (4) hanging the impeller on the shaft sleeve, and adjusting the support rod again until the support rod is tightly abutted against the inner circle of the impeller.
3. And screwing down the locking device, locking the mechanism, and dismounting the hoisting tool to start impeller assembly.
Claims (10)
1. The utility model provides a steam turbine impeller assembles axle sleeve with adjustable which characterized in that: the device comprises an inner shaft, an inner shaft cover, an outer shaft, a first outer shaft cover, a second outer shaft cover, a thrust bearing and a screw rod; the outer shaft sleeve is arranged on the inner shaft and can freely slide on the inner shaft, the first outer shaft cover is arranged at the end part of the outer shaft, a thrust bearing is arranged between the second outer shaft cover and the first outer shaft cover, the thrust bearing is arranged on the lead screw, one end of the lead screw is connected with the inner shaft through the inner shaft cover, the other end of the lead screw is provided with a locking device for locking, one end of the connecting rod is connected with the outer part of the outer shaft through a pin shaft, the other end of the connecting rod is connected with the supporting rod, the end part of the supporting rod is connected with the top plate, and the top plate is fixed on the workbench.
2. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the excircle of the inner shaft is matched with the inner circle of the outer shaft.
3. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the outer ring of the outer shaft is uniformly provided with a plurality of blocks in the circumferential direction, and mounting holes are formed in the outer ring and connected with the connecting rod through pin shafts.
4. The adjustable steam turbine wheel mounting sleeve according to claim 3, wherein: the number of the strip blocks is four.
5. The adjustable steam turbine wheel mounting sleeve according to claim 3, wherein: the mounting holes are close to two ends of the bar-shaped block.
6. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the end part of the supporting rod is provided with a roller which is arranged in a sliding groove of the top plate, and the roller can slide up and down in the sliding groove.
7. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the screw rod is provided with a circular boss for mounting a thrust bearing, threads are arranged on two sides of the boss, and a hexagonal rod matched with a wrench is arranged at one end of the boss.
8. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the locking device is a locking nut.
9. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: the outer part of the supporting rod is arc-shaped and is matched with the inner circle of the impeller.
10. The adjustable steam turbine wheel mounting sleeve according to claim 1, wherein: and the first outer shaft cover are respectively provided with a concave spigot which is matched with the thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122681209.7U CN216000291U (en) | 2021-11-04 | 2021-11-04 | Adjustable steam turbine impeller assembling shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122681209.7U CN216000291U (en) | 2021-11-04 | 2021-11-04 | Adjustable steam turbine impeller assembling shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216000291U true CN216000291U (en) | 2022-03-11 |
Family
ID=80525055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122681209.7U Active CN216000291U (en) | 2021-11-04 | 2021-11-04 | Adjustable steam turbine impeller assembling shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216000291U (en) |
-
2021
- 2021-11-04 CN CN202122681209.7U patent/CN216000291U/en active Active
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