Quick positioning and mounting structure for sliding bearing of aero-engine fuel system

Abstract

The utility model discloses a quick positioning and mounting structure for a sliding bearing of an aero-engine fuel system, which relates to the technical field of sliding bearings and comprises a sliding bearing body, a limiting groove is arranged in a bearing seat, and a limiting strip is fixedly mounted on the outer surface of a lower bearing bush. The limiting strips on the lower bearing bush can be clamped in the limiting grooves in the bearing seat, positioning blocks are fixedly installed at the four corners of the bottom end of the upper bearing bush, positioning grooves are formed in the four corners of the top end of the lower bearing bush, and the positioning blocks on the upper bearing bush can be inserted into the corresponding positioning grooves in the lower bearing bush. The limiting strips on the lower bearing bush can be clamped in the limiting grooves in the bearing seat, the lower bearing bush can be positioned and installed, the limiting strips can limit the lower bearing bush, the positioning blocks on the upper bearing bush can be inserted into the corresponding positioning grooves in the lower bearing bush, and therefore the upper bearing bush is positioned and installed on the lower bearing bush. Therefore, quick positioning and mounting of the sliding bearing are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to sliding bearing technical field, concretely is a kind of aero-engine fuel system sliding bearing quick positioning installation structure. BACKGROUND

[0002] Sliding bearing (sliding bearing), the bearing under sliding friction works, sliding bearing works smoothly, reliably, noiselessly, the function of aircraft fuel system is to store fuel, and ensure that in any state (such as various flight altitudes, flight attitude) specified, can be continuously uninterrupted to engine according to the required pressure and flow to engine, in addition, fuel system can also complete cooling machine other systems, balance aircraft, keep the additional functions such as aircraft gravity within the specified range, sliding bearing is needed to be used in its running process, so that fixed installation is used.

[0003] Some existing aero-engine fuel system sliding bearing installation structure is complex, installation step is complicated, not convenient for quick positioning installation, to further lead to low installation efficiency, to solve the above problems, the inventor proposes a kind of aero-engine fuel system sliding bearing quick positioning installation structure for solving the above problems. UTILITY MODEL CONTENT

[0004] To solve the problem that some existing aero-engine fuel system sliding bearing installation structure is complex, installation step is complicated, not convenient for quick positioning installation, to further lead to low installation efficiency;The utility model aims at providing a kind of aero-engine fuel system sliding bearing quick positioning installation structure.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of aero-engine fuel system sliding bearing quick positioning installation structure, including sliding bearing body, sliding bearing body includes bearing seat, bearing cover, bolt, lock nut, upper bearing bush, lower bearing bush, oil cup, mounting seat, bearing seat is internally provided with limit slot, the outer surface of lower bearing bush is fixedly installed with limit strip, and the limit strip on lower bearing bush can be clamped in the limit slot on bearing seat, the bottom end of upper bearing bush is fixedly installed with positioning block at four corners, the top end of lower bearing bush is provided with positioning slot at four corners, and the positioning block on upper bearing bush can be inserted in the corresponding positioning slot on lower bearing bush.

[0006] Preferably, the bottom end of oil cup is fixedly installed with cylindrical pin, and oil cup and cylindrical pin are hollow, the top end of upper bearing bush is provided with insertion hole, and the cylindrical pin on the bottom end of oil cup can be inserted in the insertion hole on upper bearing bush.

[0007] Preferably, the mounting base is provided with an adjusting assembly, the adjusting assembly comprises two first gears symmetrically distributed and rotatably arranged in the mounting base, and a threaded rod is fixedly arranged at the top end of each first gear and threadedly arranged in the bearing seat.

[0008] Preferably, a second gear is rotatably arranged in the mounting base and engaged with the two first gears, and a knob is rotatably arranged at the bottom end of the mounting base and fixedly connected with the bottom end of the second gear.

[0009] Compared with the prior art, the present application has the following beneficial effects:

[0010] 1. In the present application, the limiting strip on the lower bearing bush can be clamped in the limiting groove on the bearing seat when the bearing is installed, so that the lower bearing bush can be positioned and installed, and the limiting strip can limit the lower bearing bush, the positioning block on the upper bearing bush can be inserted into the corresponding positioning groove on the lower bearing bush, so that the upper bearing bush is positioned and installed on the lower bearing bush, thereby realizing quick positioning and installation of the sliding bearing.

[0011] 2. In the present application, the knob can be rotated by using a tool according to the height of the shaft, the second gear is driven to rotate by the knob, the two first gears are synchronously and uniformly rotated by the second gear, the threaded rod is driven to rotate by the first gear, the height of the mounting base is adjusted, and after the sliding bearing body is installed on the workpiece through the mounting base, the bearing bush and the shaft are located on the same central shaft. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0013] Figure 1 It is a schematic diagram of the overall front structure of the present application;

[0014] Figure 2 It is a schematic diagram of the overall bottom structure of the present application;

[0015] Figure 3 It is a schematic diagram of the split structure of the sliding bearing body of the present application;

[0016] Figure 4 It is a schematic diagram of the split structure of the sliding bearing body of the present application; Figure 3

[0017] Figure 5 It is a schematic diagram of the split structure of the sliding bearing body of the present application; ​

[0018] Figure 6 The figure is a section structure schematic diagram of the mounting seat.

[0019] In the figure: 1, sliding bearing body; 101, bearing seat; 102, bearing cover; 103, bolt; 104, locking nut; 105, upper bearing bush; 106, lower bearing bush; 107, oil cup; 108, mounting seat; 3, adjusting assembly; 301, threaded rod; 302, knob; 303, first gear; 304, second gear; 4, limiting strip; 5, limiting groove; 6, insertion hole; 7, positioning block; 8, positioning groove; 9, cylindrical pin. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment: as Figures 1-6The utility model provides an aviation engine fuel system sliding bearing quick positioning installation structure, including sliding bearing body 1, sliding bearing body 1 is the sliding bearing for aviation engine fuel system, including bearing seat 101, bearing cover 102, bolt 103, lock nut 104, upper bearing bush 105, lower bearing bush 106, oil cup 107, mounting seat 108, the limit slot 5 of being opened in bearing seat 101, the outer surface fixed mounting of lower bearing bush 106 is limited strip 4, and the limit strip 4 on lower bearing bush 106 can be clamped in the limit slot 5 on bearing seat 101, and the bottom end four corners of upper bearing bush 105 are all fixedly installed with the positioning block 7, and the top end four corners of lower bearing bush 106 are all set up with the positioning slot 8, and the positioning block 7 on upper bearing bush 105 can be inserted in the corresponding positioning slot 8 on lower bearing bush 106, when installing sliding bearing body 1, first, install lower bearing bush 106 in bearing seat 101, make the limit strip 4 on lower bearing bush 106 can be clamped in the limit slot 5 on bearing seat 101, can position and install lower bearing bush 106, limit strip 4 can limit lower bearing bush 106, then make the positioning block 7 on upper bearing bush 105 can be inserted in the corresponding positioning slot 8 on lower bearing bush 106, thereby position and install upper bearing bush 105 on lower bearing bush 106, complete the assembly of bearing bush, can install the shaft in upper bearing bush 105 and lower bearing bush 106, then insert bolt 103 in bearing seat 101, and bearing cover 102 is set on bolt 103, and lock nut 104 is tightened, bearing cover 102 and bearing seat 101 are fixed, then oil cup 107 is screwed in bearing cover 102, when using, make lubricating oil flow into bearing bush through oil cup 107, lubricate the shaft, facilitate the rotation of the shaft and can reduce the wear of bearing bush.

[0022] The bottom end of the oil cup 107 is fixedly installed with a cylindrical pin 9, and the oil cup 107 and the cylindrical pin 9 are both hollow, the top end of the upper bearing bush 105 is provided with a insertion hole 6, and the cylindrical pin 9 at the bottom end of the oil cup 107 can be inserted into the insertion hole 6 on the upper bearing bush 105.

[0023] By adopting the above technical scheme, after the oil cup 107 is installed on the bearing cover 102, the cylindrical pin 9 at the bottom end of the oil cup 107 can be inserted into the insertion hole 6 on the upper bearing bush 105, so that the upper bearing bush 105 is tightly combined with the lower bearing bush 106, and the upper bearing bush 105 can also be limited.

[0024] The mounting seat 108 is provided with an adjusting assembly 3, the adjusting assembly 3 comprises two first gears 303 which are symmetrically distributed, and the first gears 303 are rotatably installed in the mounting seat 108, the top end of each of the two first gears 303 is fixedly installed with a threaded rod 301, and the threaded rod 301 is threadedly inserted into the bearing seat 101.

[0025] According to the height of the shaft, the first gear 303 drives the threaded rod 301 to rotate, drives the mounting base 108 to adjust the height, and after the sliding bearing body 1 is mounted on the workpiece through the mounting base 108, the bearing bush and the shaft are located on the same central shaft.

[0026] The second gear 304 is rotatably installed in the mounting base 108 and is engaged with the two first gears 303.

[0027] According to the above technical scheme, the second gear 304 drives the two first gears 303 to synchronously rotate in the same direction.

[0028] The knob 302 is rotatably installed at the bottom end of the mounting base 108, and the top end of the knob 302 is fixedly connected with the bottom end of the second gear 304.

[0029] According to the above technical scheme, the knob 302 can be driven to rotate by using a tool, and the second gear 304 is driven to rotate by the knob 302.

[0030] Working principle: when the sliding bearing body 1 is installed, first, the lower bearing bush 106 is installed in the bearing seat 101, so that the limiting strip 4 on the lower bearing bush 106 can be clamped in the limiting groove 5 on the bearing seat 101, the lower bearing bush 106 can be positioned and installed, the limiting strip 4 can limit the lower bearing bush 106, then the positioning block 7 on the upper bearing bush 105 can be inserted into the corresponding positioning groove 8 on the lower bearing bush 106, so that the upper bearing bush 105 is positioned and installed on the lower bearing bush 106, the assembly of the bearing bush is completed, the shaft can be installed in the upper bearing bush 105 and the lower bearing bush 106, then the bolt 103 is inserted into the bearing seat 101, the bearing cover 102 is sleeved on the bolt 103, and the locking nut 104 is tightened, the bearing cover 102 and the bearing seat 101 are fixed, then the oil cup 107 is threadedly installed in the bearing cover 102, after the oil cup 107 is installed on the bearing cover 102, the cylindrical pin 9 at the bottom end of the oil cup 107 can be inserted into the insertion hole 6 on the upper bearing bush 105, so that the upper bearing bush 105 is tightly attached to the lower bearing bush 106, and the upper bearing bush 105 can also be limited, when in use, the lubricating oil flows into the bearing bush through the oil cup 107, lubricates the shaft, facilitates the rotation of the shaft and reduces the wear of the bearing bush.

[0031] When the sliding bearing is installed on the workpiece, according to the height of the shaft, the knob 302 is driven to rotate by using a tool, the second gear 304 is driven to rotate by the knob 302, the second gear 304 drives the two first gears 303 to synchronously rotate in the same direction, the first gear 303 drives the threaded rod 301 to rotate, drives the mounting base 108 to adjust the height, and after the sliding bearing body 1 is mounted on the workpiece through the mounting base 108, the bearing bush and the shaft are located on the same central shaft.

[0032] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A quick positioning installation structure of a sliding bearing of an aeroengine fuel system, comprising a sliding bearing body (1), characterized in that: The sliding bearing body (1) comprises a bearing seat (101), a bearing cover (102), a bolt (103), a locking nut (104), an upper bearing bush (105), a lower bearing bush (106), an oil cup (107) and a mounting base (108), the bearing seat (101) is internally provided with a limiting groove (5), the outer surface of the lower bearing bush (106) is fixedly provided with a limiting strip (4), the limiting strip (4) on the lower bearing bush (106) is clamped on the limiting groove (5) on the bearing seat (101), the bottom end of the upper bearing bush (105) is fixedly provided with a positioning block (7) at four corners, the top end of the lower bearing bush (106) is provided with a positioning groove (8) at four corners, and the positioning block (7) on the upper bearing bush (105) is inserted into the corresponding positioning groove (8) on the lower bearing bush (106).

2. A quick positioning installation structure for a sliding bearing of a fuel system of an aero-engine according to claim 1, characterized in that, The bottom end of the oil cup (107) is fixedly provided with a cylindrical pin (9), and the oil cup (107) and the cylindrical pin (9) are both hollow.

3. A quick positioning mounting structure for a sliding bearing of a fuel system of an aero-engine according to claim 1, characterized in that, The top end of the upper bearing bush (105) is provided with a insertion hole (6), and the cylindrical pin (9) at the bottom end of the oil cup (107) is inserted into the insertion hole (6) on the upper bearing bush (105).

4. A quick positioning mounting structure for a sliding bearing of a fuel system of an aero-engine according to claim 1, characterized in that, The mounting base (108) is provided with an adjusting assembly (3), the adjusting assembly (3) comprises two first gears (303) which are symmetrically distributed, and the first gears (303) are rotatably installed in the mounting base (108).

5. A quick positioning mounting structure for a sliding bearing of a fuel system of a gas turbine engine as set forth in claim 4, characterized in that, The top end of each of the two first gears (303) is fixedly provided with a threaded rod (301), and the threaded rod (301) is threadedly inserted into the bearing seat (101).

6. A quick positioning mounting structure for a sliding bearing of a fuel system of a gas turbine engine as set forth in claim 1, characterized in that, A second gear (304) is rotatably installed in the mounting base (108), and the second gear (304) is engaged with the two first gears (303).

7. The quick positioning installation of a sliding bearing of an aero-engine fuel system according to claim 1 Structure, characterized in that A knob (302) is rotatably installed in the bottom end of the mounting base (108), and the top end of the knob (302) is fixedly connected with the bottom end of the second gear (304).

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