Aviation impeller shaft sleeve for titanium alloy

Abstract

The utility model relates to the technical field of titanium alloy aviation impeller shaft sleeves, and discloses a titanium alloy aviation impeller shaft sleeve which comprises a fixing shaft, a shaft sleeve is connected to the outer surface of the fixing shaft in a sliding mode, a protection mechanism is arranged on the outer side of the shaft sleeve, and the protection mechanism comprises two installation rings. The inner wall of each mounting ring is in sliding connection with the outer surface of the shaft sleeve, and the inner wall of each mounting ring is in threaded connection with six first bolts. According to the titanium alloy aviation impeller shaft sleeve, by arranging the protection mechanism, the problem that an existing shaft sleeve bolt is prone to rusting is effectively solved, a protection cover and a second sealing gasket in the protection mechanism can protect the bolt, dust and moisture are prevented from making contact with the bolt, and the situation that the dismounting efficiency of workers is affected due to the fact that the bolt rusts is avoided; and as the bolts are not easy to rust, the service life of the whole device is prolonged, which means that the frequency of maintenance and replacement is reduced, the cost of maintenance and replacement is reduced, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to titanium alloy aviation impeller shaft sleeve technical field, concretely is a kind of for titanium alloy aviation impeller shaft sleeve. BACKGROUND

[0002] Titanium alloy aviation impeller shaft sleeve is a key component in aeronautical equipment such as aero-engine, and is an important component for connecting, supporting and torque transmission between the aero-engine and the shaft, which is produced by specific design and manufacturing process using the excellent performance of titanium alloy in the field of aviation, and is crucial to the performance and safety of aeronautical equipment.

[0003] At present, the existing impeller shaft sleeve can assist the connection between the shaft and the impeller during use, but the shaft sleeve itself cannot protect the surface bolts, so that the bolts on the shaft sleeve may rust when they are in contact with more dust and moisture for a long time, which not only affects the efficiency of the staff during disassembly, but also reduces the service life of the device and the bolts, increases the maintenance and replacement cost, and causes the problem of poor practicality.

[0004] Therefore, the skilled in the art provides a titanium alloy aviation impeller shaft sleeve to solve the problems raised in the background. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a titanium alloy aviation impeller shaft sleeve to solve the problems raised in the background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A titanium alloy aviation impeller shaft sleeve comprises a fixed shaft, the outer surface of the fixed shaft is slidably connected with a shaft sleeve, and the outer side of the shaft sleeve is provided with a protection mechanism.

[0008] The protection mechanism comprises two mounting rings, the inner wall of each mounting ring is in sliding connection with the outer surface of the shaft sleeve, six first bolts are threadedly connected to the inner wall of each mounting ring, the outer side of the fixed shaft is provided with two fixed rings, the side face of each fixed ring close to each other is fixedly connected with six protection covers, the inner wall of each protection cover is in sliding connection with the outer surface of the first bolt, the side face of the two groups of protection covers close to each other is fixedly connected with six second sealing rings, the outer surface of each second sealing ring is in contact with the inner wall of the mounting ring, the side face of each fixed ring close to each other is fixedly connected with six positioning columns, the outer surface of each positioning column is in sliding connection with the inner wall of the mounting ring, the inner wall of each positioning column is threadedly connected with a positioning pin, the outer surface of each positioning pin is in contact with the inner wall of the mounting ring, the outer surface of each positioning pin is fixedly connected with a first sealing ring, and the outer surface of each first sealing ring is in contact with the inner wall of the mounting ring.

[0009] As a further scheme of the utility model: the inner wall of the shaft sleeve is threadedly connected with four groups of second bolts, and the outer surface of each second bolt is threadedly connected with the inner wall of the fixed shaft.

[0010] As a further scheme of the utility model: the outer side of each second bolt is provided with a sealing gasket, the outer surface of each sealing gasket is in contact with the outer surface of the second bolt, and the outer surface of each sealing gasket is in contact with the inner wall of the shaft sleeve.

[0011] As a further scheme of the utility model: the outer surface of the fixed shaft is fixedly connected with four fixed guide blocks, and the outer surface of each fixed guide block is in sliding connection with the inner wall of the shaft sleeve.

[0012] As a further scheme of the utility model: the inner wall of each mounting ring is fixedly connected with four sliding blocks, and the outer surface of each sliding block is in sliding connection with the inner wall of the shaft sleeve.

[0013] As a further scheme of the utility model: the side face of each fixed ring close to each other is fixedly connected with six guide columns, and the outer surface of each guide column is in sliding connection with the inner wall of the mounting ring.

[0014] As a further scheme of the utility model: the outer surface of each first bolt is in sliding connection with a gasket, and the outer surface of each gasket is in contact with the outer surface of the mounting ring.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] The utility model discloses a protection mechanism is set up, effectively solved the existing shaft sleeve bolt easy rust problem, the protection cover and second sealing washer in protection mechanism can carry out the protection to bolt, prevent dust and moisture from contacting bolt, avoided the condition of the staff disassembly efficiency because bolt rust, because bolt is not easy to rust, the service life of device whole has been extended, this means that the frequency of maintenance and replacement has been reduced, thereby reduced maintenance and replacement cost, improved practicality, the use of first sealing ring and second sealing ring further strengthened the protection effect, prevent outside material from entering the area of bolt from the gap, as a whole, the shaft sleeve passes through the innovative design of protection mechanism, overcame the disadvantage of the existing impeller shaft sleeve, improved the reliability, economy and practicality when using in the field of aviation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of structure schematic diagram for titanium alloy aviation impeller shaft sleeve;

[0018] Figure 2 It is a kind of installation ring three-dimensional structure schematic diagram in titanium alloy aviation impeller shaft sleeve;

[0019] Figure 3 It is a kind of fixed ring three-dimensional structure schematic diagram in titanium alloy aviation impeller shaft sleeve;

[0020] Figure 4 It is a kind of installation ring sectional view three-dimensional structure schematic diagram in titanium alloy aviation impeller shaft sleeve.

[0021] In the drawing: 1, fixed shaft;2, shaft sleeve;3, protection mechanism;301, installation ring;302, fixed ring;303, first bolt;304, protection cover;305, positioning column;306, positioning pin;307, first sealing ring;308, second sealing ring;4, sealing washer;5, fixed guide block;6, second bolt;7, sliding block;8, guide column;9, gasket. DETAILED DESCRIPTION

[0022] Please refer to Figures 1-4 A kind of titanium alloy aviation impeller shaft sleeve, including fixed shaft 1, the outer surface of fixed shaft 1 is slidably connected with shaft sleeve 2, the outer side of shaft sleeve 2 is provided with protection mechanism 3;

[0023] The protection mechanism 3 comprises two mounting rings 301, the inner wall of each mounting ring 301 is in sliding connection with the outer surface of the shaft sleeve 2, the inner wall of the shaft sleeve 2 is in threaded connection with four groups of second bolts 6, the outer surface of each second bolt 6 is in threaded connection with the inner wall of the fixed shaft 1, the advantage of this structure is that the shaft sleeve 2 and the fixed shaft 1 are tightly connected through the second bolts 6, which can enhance the fixing effect of the shaft sleeve 2 on the fixed shaft 1, prevent the shaft sleeve 2 from loosening during the operation of the aviation impeller, and thus ensure the stability of the entire titanium alloy aviation impeller shaft sleeve 2 structure.

[0024] The inner wall of each mounting ring 301 is in threaded connection with six first bolts 303, the outer side of the fixed shaft 1 is provided with two fixed rings 302, the outer side of each second bolt 6 is provided with a sealing gasket 4, the outer surface of each sealing gasket 4 is in contact with the outer surface of the second bolt 6, and the outer surface of each sealing gasket 4 is in contact with the inner wall of the shaft sleeve 2, the existence of the sealing gasket 4 can effectively prevent foreign matter from entering the internal structure through the gap between the second bolt 6 and the shaft sleeve 2, avoid the adverse effects such as wear or corrosion of impurities on the connecting part of the shaft sleeve 2 and the fixed shaft 1, and can also prevent the leakage of internal lubricating oil and other media to a certain extent, thereby improving the sealing performance of the entire structure.

[0025] The side surface of each of the two fixed rings 302 close to each other is fixedly connected with six protective covers 304, the inner wall of each protective cover 304 is in sliding connection with the outer surface of the first bolt 303, the outer surface of the fixed shaft 1 is fixedly connected with four fixed guide blocks 5, and the outer surface of each fixed guide block 5 is in sliding connection with the inner wall of the shaft sleeve 2, the fixed guide block 5 plays a guiding role, and when the shaft sleeve 2 slides along the fixed shaft 1, the fixed guide block 5 can guide the sliding direction of the shaft sleeve 2, ensure the sliding path of the shaft sleeve 2 is accurate, avoid the shaft sleeve 2 from deviating or shaking, and help to improve the accuracy and reliability of the operation of the entire shaft sleeve 2 structure.

[0026] The side surface of each of the two groups of protective covers 304 close to each other is fixedly connected with six second sealing rings 308, the outer surface of each second sealing ring 308 is in contact with the inner wall of the mounting ring 301, the inner wall of each mounting ring 301 is fixedly connected with four sliding blocks 7, and the outer surface of each sliding block 7 is in sliding connection with the inner wall of the shaft sleeve 2, the sliding of the mounting ring 301 on the shaft sleeve 2 is more stable due to the arrangement of the sliding block 7, when the mounting ring 301 needs to be adjusted in position, the sliding block 7 can reduce the friction between the mounting ring 301 and the shaft sleeve 2, so that the sliding operation of the mounting ring 301 is more smooth, and at the same time, it is also helpful to keep the relative position of the mounting ring 301 on the shaft sleeve 2 stable.

[0027] The outer surface of each positioning column 305 is in sliding connection with the inner wall of the mounting ring 301, and the inner wall of each positioning column 305 is in threaded connection with a positioning pin 306. The side of each of the two fixed rings 302 close to each other is fixedly connected with six guide columns 8, the outer surface of each guide column 8 is in sliding connection with the inner wall of the mounting ring 301, and the guide column 8 can guide the movement of the mounting ring 301. When the mounting ring 301 and the fixed ring 302 move relatively, the guide column 8 ensures that the mounting ring 301 moves in a predetermined direction, improves the accuracy of the cooperation between the mounting ring 301 and the fixed ring 302, and helps the protection mechanism 3 to better play its protection role.

[0028] The outer surface of each positioning pin 306 is in contact with the inner wall of the mounting ring 301, the outer surface of each positioning pin 306 is fixedly connected with a first sealing ring 307, the outer surface of each first sealing ring 307 is in contact with the inner wall of the mounting ring 301, the outer surface of each first bolt 303 is in sliding connection with a gasket 9, and the outer surface of each gasket 9 is in contact with the outer surface of the mounting ring 301. The gasket 9 can disperse the pressure of the first bolt 303 on the mounting ring 301, prevent the first bolt 303 from causing excessive extrusion to the surface of the mounting ring 301 and damaging the mounting ring 301 when being tightened, and also can increase the contact area between the first bolt 303 and the mounting ring 301, improve the stability and reliability of the connection.

[0029] The utility model discloses a working principle is: when using, first, the shaft sleeve 2 is sleeved on the outside of fixed shaft 1, and four fixed guide blocks 5 of the inner side of shaft sleeve 2 can slide along the outer surface of fixed shaft 1, just like drawer slide rail guarantees that the shaft sleeve 2 moves smoothly, then four groups of second bolt 6 are passed through the shaft sleeve 2 and are screwed into the inner wall of fixed shaft 1, and the shaft sleeve 2 is fixed firmly in this way, and the outer surface of each second bolt 6 is sleeved with sealing pad 4, just like the rubber ring is added to screw, so as to increase the sealing property, and then install protection mechanism 3 and impeller, and the impeller is sleeved on the surface of shaft sleeve 2, and when the impeller is sleeved on the surface of shaft sleeve 2, sealing pad 4 can also be prevented from falling, then two mounting rings 301, impeller and shaft sleeve 2 are fixed through first bolt 303, and since two mounting rings 301 and impeller are fixed into a whole, the slider 7 in mounting ring 301 can prevent the mounting ring 301 and impeller from sliding and moving back and forth, so as to be fixed firmly, then two fixed rings 302 are sleeved on the outside of mounting ring 301 with six protective covers 304, just like the protective shell is worn on first bolt 303 on mounting ring 301, and the second sealing ring 308 in protective cover 304 can tightly adhere to the surface of mounting ring 301, and forms a sealed barrier, and six positioning columns 305 on fixed ring 302 can be aligned with the hole position on mounting ring 301, then positioning pin 306 is screwed in and fixed, and the first sealing ring 307 on positioning pin 306 can fill the gap, prevent dust and moisture from entering, so as to prevent external material from entering the bolt area from the gap, and the service life of device and bolt is prolonged simultaneously.

[0030] The above-mentioned is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A titanium alloy aero impeller shaft sleeve comprising a stationary shaft (1) characterized in that: The outer surface of the fixed shaft (1) is slidably connected with a shaft sleeve (2), and the outer side of the shaft sleeve (2) is provided with a protection mechanism (3). The protection mechanism (3) comprises two mounting rings (301), the inner wall of each mounting ring (301) is slidably connected with the outer surface of the shaft sleeve (2), the inner wall of each mounting ring (301) is threadedly connected with six first bolts (303), the outer side of the fixed shaft (1) is provided with two fixed rings (302), the side face of the two fixed rings (302) close to each other is fixedly connected with six protective covers (304), the inner wall of each protective cover (304) is slidably connected with the outer surface of the first bolt (303), the side face of the two groups of protective covers (304) close to each other is fixedly connected with six second sealing rings (308), the outer surface of each second sealing ring (308) is in contact with the inner wall of the mounting ring (301), the side face of the two fixed rings (302) close to each other is fixedly connected with six positioning columns (305), the outer surface of each positioning column (305) is slidably connected with the inner wall of the mounting ring (301), the inner wall of each positioning column (305) is threadedly connected with a positioning pin (306), the outer surface of each positioning pin (306) is in contact with the inner wall of the mounting ring (301), the outer surface of each positioning pin (306) is fixedly connected with a first sealing ring (307), and the outer surface of each first sealing ring (307) is in contact with the inner wall of the mounting ring (301).

2. A titanium alloy aero impeller shaft sleeve according to claim 1, characterized in that: The inner wall of the shaft sleeve (2) is threadedly connected with four groups of second bolts (6), and the outer surface of each second bolt (6) is threadedly connected with the inner wall of the fixed shaft (1).

3. A titanium alloy aero vane shaft sleeve as claimed in claim 2, wherein: The outer side of each second bolt (6) is provided with a sealing gasket (4), the outer surface of each sealing gasket (4) is in contact with the outer surface of the second bolt (6), and the outer surface of each sealing gasket (4) is in contact with the inner wall of the shaft sleeve (2).

4. A titanium alloy aero impeller shaft sleeve as claimed in claim 1, wherein: The outer surface of the fixed shaft (1) is fixedly connected with four fixed guide blocks (5), and the outer surface of each fixed guide block (5) is slidably connected with the inner wall of the shaft sleeve (2).

5. A titanium alloy aero impeller shaft sleeve as claimed in claim 1, wherein: The inner wall of each mounting ring (301) is fixedly connected with four sliding blocks (7), and the outer surface of each sliding block (7) is slidably connected with the inner wall of the shaft sleeve (2).

6. A titanium alloy aero impeller shaft sleeve as claimed in claim 1, wherein: The side face of the two fixed rings (302) close to each other is fixedly connected with six guide columns (8), and the outer surface of each guide column (8) is slidably connected with the inner wall of the mounting ring (301).

7. A titanium alloy aero impeller shaft sleeve as claimed in claim 1, wherein: The outer surface of each first bolt (303) is slidably connected with a gasket (9), and the outer surface of each gasket (9) is in contact with the outer surface of the mounting ring (301).

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