Bolt with sealing structure for aero-engine

Abstract

The utility model discloses a bolt with a sealing structure for an aero-engine, which comprises a bolt head, a mounting hole is communicated and mounted between an upper thread groove and a lower thread groove, an inner cushion pipe is mounted on the inner wall of the mounting hole in an inserted manner, and a bolt rod is mounted with the inner cushion pipe in an inserted manner. A sealing buckle block is fixedly connected to the center position of the outer wall of the inner cushion pipe, and the sealing buckle block and the sealing buckle groove are installed in an inserted mode. The bolt with the sealing structure for the aero-engine can be installed in a three-group sealing mode through the upper sealing gasket, the sealing buckle groove, the sealing buckle block and the lower sealing gasket, and can be rapidly installed in a matched mode through inserting, disassembling and assembling of the inner gasket pipe. The bolt head and the mounting nut can be spirally spliced through the upper threaded groove, the upper external thread, the lower external thread and the lower threaded groove, mounting is more stable, the upper sealing gasket and the lower sealing gasket can be quickly spliced, disassembled and assembled through the threaded mounting groove and the threaded mounting ring, independent replacement and use are facilitated, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a bolt with a sealing structure used for an aero-engine. Background Art

[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is matched with a nut. It is composed of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated. Therefore, the bolt connection is a detachable connection and is needed in the assembly of aircraft engines.

[0003] The existing CN213839206U bolt with a sealing structure has a retaining ring that can be screwed into the threaded hole when the bolt is installed, so that the gasket and the contact surface form a seal. At the same time, the retaining ring can block the gasket to prevent it from falling during use or transportation. However, there are shortcomings. The sealing effect of the existing equipment is not good, and the installation stability is poor and it is inconvenient to use. Therefore, a bolt with a sealing structure for aircraft engines is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a bolt with a sealing structure for an aircraft engine, so as to solve the problems mentioned in the above background technology that the bolt with a sealing structure has poor sealing effect, poor installation stability and inconvenient use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bolt with a sealing structure for an aircraft engine, comprising a bolt head, a positioning slot being sleeved and installed on the outer wall of the bolt head, and the outer wall of the positioning slot being fixedly connected to the engine housing, an upper thread groove being provided at the upper end of the inner wall of the positioning slot, the bolt head being inserted and installed in the upper thread groove, and the outer wall of the bolt head being fixedly connected with an upper external thread, a bolt rod being fixedly connected at the center position of the lower end of the bolt head, a lower thread groove being provided at the lower end of the inner wall of the positioning slot, and a mounting nut being inserted and installed in the inner wall of the lower thread groove, the outer wall of the mounting nut being fixedly connected with a lower external thread, and the mounting nut being sleeved and installed on the bolt rod, The lower end edge of the mounting nut is fixedly connected with a mounting groove, the upper end edge of the mounting nut and the lower end edge of the bolt head are provided with a threaded mounting groove, and a threaded mounting ring is inserted and installed on the inner wall of the threaded mounting groove, the threaded mounting ring at the lower end edge of the bolt head is fixedly connected with an upper sealing gasket, and the threaded mounting ring at the upper end edge of the mounting nut is fixedly connected with a lower sealing gasket, a mounting hole is connected and installed between the upper threaded groove and the lower threaded groove, and an inner gasket is inserted and installed on the inner wall of the mounting hole, a sealing buckle groove is provided on the inner wall of the inner gasket tube, the bolt rod is inserted and installed with the inner gasket tube, and a sealing buckle block is fixedly connected to the center position of the outer wall of the inner gasket tube, and the sealing buckle block is inserted and installed with the sealing buckle groove.

[0006] Preferably, the bolt head is installed by spirally splicing the upper external thread and the upper thread groove, and the bolt rod is installed by rotationally locking with the engine housing through a mounting nut.

[0007] Preferably, the bolt head and the mounting nut are mounted by clamping and supporting the inner wall of the positioning slot through an upper sealing gasket and a lower sealing gasket.

[0008] Preferably, the bolt rod is installed in a sealing manner by snapping together with the inner gasket tube and the mounting hole through the sealing buckle groove and the sealing buckle block.

[0009] Preferably, the upper sealing gasket and the lower sealing gasket are installed in a rotationally spliced ​​manner through a threaded mounting groove, a threaded mounting ring, a bolt head and a mounting nut.

[0010] Preferably, the mounting nut is installed by spirally splicing the lower external thread and the lower thread groove, and the mounting groove is distributed in a U-shaped structure at one end of the mounting nut.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the bolt with a sealing structure for an aircraft engine can be sealed in three groups through an upper sealing gasket, a sealing buckle groove, a sealing buckle block and a lower sealing gasket, and can be quickly adapted and installed through the insertion and disassembly of an inner gasket tube, and the bolt head and the mounting nut can be spirally spliced ​​through the upper thread groove, the upper external thread, the lower external thread and the lower thread groove, so the installation is more stable, and the upper sealing gasket and the lower sealing gasket can be quickly spliced ​​and disassembled through the threaded mounting groove and the threaded mounting ring, which is convenient for independent replacement and use, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a bolt with a sealing structure for an aircraft engine according to the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of a bolt with a sealing structure for an aircraft engine according to the utility model;

[0014] Figure 3 The utility model is a bolt with a sealing structure for an aircraft engine Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 The utility model is a bolt with a sealing structure for an aircraft engine Figure 2 Enlarged view of point B in the middle;

[0016] Figure 5 The utility model is a bolt with a sealing structure for an aircraft engine Figure 2 Enlarged view of point C in the middle;

[0017] Figure 6 The utility model is a bolt with a sealing structure for an aircraft engine Figure 2 Enlarged view of point D in the middle.

[0018] In the figure: 1. Bolt head, 2. Positioning slot, 3. Engine housing, 4. Bolt rod, 5. Upper thread groove, 6. Threaded mounting groove, 7. Threaded mounting ring, 8. Upper sealing gasket, 9. Upper external thread, 10. Inner gasket tube, 11. Mounting hole, 12. Sealing buckle groove, 13. Sealing buckle block, 14. Lower external thread, 15. Lower thread groove, 16. Lower sealing gasket, 17. Mounting nut, 18. Mounting screw groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-6 The utility model provides a technical solution: a bolt with a sealing structure for an aircraft engine, comprising a bolt head 1, a positioning slot 2, an engine casing 3, a bolt rod 4, an upper thread groove 5, a threaded mounting groove 6, a threaded mounting ring 7, an upper sealing gasket 8, an upper external thread 9, an inner washer tube 10, a mounting hole 11, a sealing buckle groove 12, a sealing buckle block 13, a lower external thread 14, a lower thread groove 15, a lower sealing gasket 16, a mounting nut 17 and a mounting screw groove 18. The outer wall of the bolt head 1 is fitted with the positioning slot 2, and the outer wall of the positioning slot 2 is fixedly connected to the engine casing 3. The bolt head 1 is spirally spliced ​​and installed with the upper thread groove 5 through the upper external thread 9, and the bolt rod 4 is rotationally locked and installed with the engine casing 3 through the mounting nut 17. This makes it convenient to perform double-layer locking installation on the bolt head 1 and the bolt rod 4, and the installation is stable.

[0021] The bolt head 1 and the mounting nut 17 are clamped and supported by the inner wall of the positioning slot 2 through the upper sealing gasket 8 and the lower sealing gasket 16, so that the bolt head 1 and the mounting nut 17 can be conveniently clamped and supported for installation, and the sealing effect is good. An upper thread groove 5 is provided at the upper end of the inner wall of the positioning slot 2, and the bolt head 1 is inserted into the upper thread groove 5 for installation, and the outer wall of the bolt head 1 is fixedly connected with an upper external thread 9, and the center position of the lower end of the bolt head 1 is fixedly connected with a bolt rod 4, and the bolt rod 4 is installed in a buckled and sealed manner with the inner gasket tube 10 and the mounting hole 11 through the sealing buckle groove 12 and the sealing buckle block 13, so that the bolt rod 4 can be reinforced and sealed by the sealing buckle groove 12 and the sealing buckle block 13, and the effect is better.

[0022] A lower thread groove 15 is provided at the lower end of the inner wall of the positioning slot 2, and a mounting nut 17 is installed on the inner wall of the lower thread groove 15. The mounting nut 17 is spirally spliced ​​with the lower thread groove 15 through the lower external thread 14, and the mounting screw groove 18 is distributed in a U-shaped structure at one end of the mounting nut 17. This makes it convenient for the mounting nut 17 to be independently locked and installed, the installation is more stable, and the locking operation is convenient. The outer wall of the mounting nut 17 is fixedly connected with the lower external thread 14, and the mounting nut 17 is installed in a sleeve with the bolt rod 4, and the lower edge of the mounting nut 17 is fixed. A mounting groove 18 is fixedly connected, and a threaded mounting groove 6 is provided on the upper edge of the mounting nut 17 and the lower edge of the bolt head 1, and a threaded mounting ring 7 is installed on the inner wall of the threaded mounting groove 6. An upper sealing gasket 8 is fixedly connected to the threaded mounting ring 7 at the lower edge of the bolt head 1. The upper sealing gasket 8 and the lower sealing gasket 16 are rotationally spliced ​​and installed with the bolt head 1 and the mounting nut 17 through the threaded mounting groove 6 and the threaded mounting ring 7. This makes it easy for the upper sealing gasket 8 and the lower sealing gasket 16 to be independently disassembled and assembled, and convenient for quick replacement and use.

[0023] A lower sealing gasket 16 is fixedly connected to the threaded mounting ring 7 on the upper edge of the mounting nut 17, and a mounting hole 11 is installed between the upper thread groove 5 and the lower thread groove 15, and an inner gasket tube 10 is inserted and installed on the inner wall of the mounting hole 11. A sealing buckle groove 12 is provided on the inner wall of the inner gasket tube 10, and the bolt rod 4 is inserted and installed with the inner gasket tube 10, and a sealing buckle block 13 is fixedly connected to the center position of the outer wall of the inner gasket tube 10, and the sealing buckle block 13 is inserted and installed with the sealing buckle groove 12.

[0024] Working principle: When using the bolt with a sealing structure for aircraft engines, first insert the inner gasket tube 10 of the device into the mounting hole 11, and then screw and lock the mounting nut 17 through the mounting groove 18 and the lower external thread 14 with the lower thread groove 15. Then insert the bolt head 1 and the bolt rod 4 into the inner gasket tube 10, and then screw and lock the bolt head 1 with the upper thread groove 5 through the upper external thread 9, and screw and lock the bolt rod 4 with the mounting nut 17. Then, the bolt rod 4 is buckled and sealed through the sealing buckle groove 12 and the sealing buckle block 13. After locking, it can be clamped and sealed by the upper sealing gasket 8 and the lower sealing gasket 16. When the upper sealing gasket 8 and the lower sealing gasket 16 need to be replaced, they can be quickly and independently disassembled and assembled through the threaded mounting groove 6 and the threaded mounting ring 7. This is the use process of the bolt with a sealing structure for aircraft engines.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolt with a sealing structure for an aircraft engine, comprising a bolt head (1), an outer wall of the bolt head (1) being fitted with a positioning slot (2), and an outer wall of the positioning slot (2) being fixedly connected to an engine housing (3), characterized in that: The upper end of the inner wall of the positioning slot (2) is provided with an upper thread groove (5), the bolt head (1) is inserted and installed with the upper thread groove (5), and the outer wall of the bolt head (1) is fixedly connected with an upper external thread (9), and the center position of the lower end of the bolt head (1) is fixedly connected with a bolt rod (4), the lower end of the inner wall of the positioning slot (2) is provided with a lower thread groove (15), and the inner wall of the lower thread groove (15) is inserted and installed with a mounting nut (17), the outer wall of the mounting nut (17) is fixedly connected with a lower external thread (14), and the mounting nut (17) is sleeved and installed with the bolt rod (4), the lower end edge of the mounting nut (17) is fixedly connected with a mounting screw groove (18), the upper end edge of the mounting nut (17) and the lower end edge of the bolt head (1) are provided with a threaded mounting groove ( 6), and a threaded mounting ring (7) is installed on the inner wall of the threaded mounting groove (6), an upper sealing gasket (8) is fixedly connected to the threaded mounting ring (7) at the lower end edge of the bolt head (1), and a lower sealing gasket (16) is fixedly connected to the threaded mounting ring (7) at the upper end edge of the mounting nut (17), a mounting hole (11) is installed between the upper threaded groove (5) and the lower threaded groove (15), and an inner gasket tube (10) is installed on the inner wall of the mounting hole (11), a sealing buckle groove (12) is provided on the inner wall of the inner gasket tube (10), the bolt rod (4) is installed with the inner gasket tube (10), and a sealing buckle block (13) is fixedly connected to the center position of the outer wall of the inner gasket tube (10), and the sealing buckle block (13) is installed with the sealing buckle groove (12).

2. A bolt with a sealing structure for an aircraft engine according to claim 1, characterized in that: The bolt head (1) is installed in a spiral splicing manner with the upper thread groove (5) through the upper external thread (9), and the bolt rod (4) is installed in a rotationally locked manner with the engine housing (3) through the mounting nut (17).

3. The bolt with a sealing structure for an aircraft engine according to claim 2, characterized in that: The bolt head (1) and the mounting nut (17) are mounted in a clamping and supporting manner with the inner wall of the positioning slot (2) via the upper sealing gasket (8) and the lower sealing gasket (16).

4. The bolt with a sealing structure for an aircraft engine according to claim 3, characterized in that: The bolt rod (4) is installed in a buckled and sealed manner with the inner gasket tube (10) and the mounting hole (11) through the sealing buckle groove (12) and the sealing buckle block (13).

5. The bolt with a sealing structure for an aircraft engine according to claim 4, characterized in that: The upper sealing gasket (8) and the lower sealing gasket (16) are mounted in a rotationally spliced ​​manner via the threaded mounting groove (6), the threaded mounting ring (7), the bolt head (1) and the mounting nut (17).

6. The bolt with a sealing structure for an aircraft engine according to claim 5, characterized in that: The mounting nut (17) is installed by spirally splicing the lower external thread (14) and the lower thread groove (15), and the mounting screw groove (18) is distributed in a U-shaped structure at one end of the mounting nut (17).

Images