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

Abstract

The utility model relates to a quick positioning and mounting structure for a sliding bearing of a fuel system of an aero-engine, which comprises a bearing body and is technically characterized in that a pair of arc-shaped long grooves concentric with the bearing body is symmetrically formed in the front end surface of a bearing sleeve block of the bearing body; the bearing sleeve block is connected with a right-angle adapter plate through an arc-shaped long groove and a first positioning bolt pair, a nut of the first positioning bolt pair is embedded in the arc-shaped long groove, the horizontal plate section of the right-angle adapter plate is tightly connected with the front end face of the bearing sleeve block, and a second positioning bolt pair is arranged on the vertical plate section of the right-angle adapter plate. A nut of the second positioning bolt pair is provided with a screw hole perpendicular to the nut, and a positioning screw is arranged in the screw hole. According to the structure, on one hand, the adaptation degree with a complex installation environment is guaranteed, on the other hand, the connection strength with an installation position is enhanced, and work safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of the installation of sliding bearings in an aero-engine fuel system, and particularly relates to a quick positioning and installation structure for a sliding bearing in an aero-engine fuel system. Background Art

[0002] The aircraft fuel system is mainly used for storing fuel and ensuring that fuel is continuously supplied to the engine at the required pressure and flow rate under the specified flight altitude and flight attitude. The sliding bearing is an important component of the aircraft fuel system, and its installation, fixation, disassembly and assembly operations are very important.

[0003] However, when the installation environment is complex, it is necessary to consider the adjustment of the connection direction of the external connecting parts of the bearing. For the convenience of adjustment, CN 221880024 U discloses a quick positioning and installation structure for a sliding bearing in an aero-engine fuel system, which includes an outer bearing ring, a positioning and installation block fixedly connected with an installation plug rod, a slide rail is arranged on the outer wall of the bearing sleeve block, and a slide block is inserted and installed in the inner wall of the slide rail. One end of the slide block is fixedly connected with a connecting seat, and a first locking knob is installed on the side surface of the connecting seat. One end of the connecting seat is installed with an installation and fixing block, and a second locking knob is installed on one side edge of the installation and fixing block. A fixing bolt is inserted and installed on the installation and fixing block. This installation structure is intended to perform quick bolt fixing installation through the installation and fixing block and the fixing bolt, and the installation and fixing block and the fixing bolt can adjust the sliding position through the slide rail, the slide block and the first locking knob, and perform rotational fixing adjustment through the second locking knob and the installation and fixing block to facilitate adaptation to different installation environments. However, there are still the following problems: the connection strength between the bearing sleeve block and the installation environment needs to be strengthened. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a quick positioning and installation structure for a sliding bearing in an aero-engine fuel system with reasonable structure and reliable use to solve the above problems. On the one hand, it ensures the adaptability to a complex installation environment, and on the other hand, it strengthens the connection strength with the installation position to ensure work safety.

[0005] The technical solution of the utility model is as follows:

[0006] A quick positioning and installation structure for a sliding bearing in an aero-engine fuel system includes a bearing body. The technical key points are that: a pair of arc-shaped long grooves concentric with the bearing body are symmetrically arranged on the front end face of the bearing sleeve block of the bearing body. The bearing sleeve block is connected with a right-angle adapter plate by using the arc-shaped long grooves and a first positioning bolt pair. The nut of the first positioning bolt pair is embedded in the arc-shaped long groove. The horizontal plate section of the right-angle adapter plate is closely connected with the front end face of the bearing sleeve block. A second positioning bolt pair is arranged on the vertical plate section of the right-angle adapter plate. A screw hole perpendicular to the nut of the second positioning bolt pair is provided, and a positioning screw is arranged in the screw hole.

[0007] In the above-mentioned quick positioning and installation structure of the sliding bearing of the aero-engine fuel system, two through holes are symmetrically arranged on the horizontal plate section of the right-angle adapter plate. The number of the first positioning bolt pairs is equal to and corresponds one by one to the number of the through holes. The bolt tip of the first positioning bolt pair passes through the arc-shaped long slot and the corresponding through hole and then is connected and fixed with the positioning nut of the first positioning bolt pair.

[0008] In the above-mentioned quick positioning and installation structure of the sliding bearing of the aero-engine fuel system, a through hole is arranged at the center of the vertical plate section of the right-angle adapter plate. The bolt tip of the second positioning bolt pair passes through the elastic gasket and the through hole and then is connected and fixed with the positioning nut of the second positioning bolt pair.

[0009] In the above-mentioned quick positioning and installation structure of the sliding bearing of the aero-engine fuel system, the cross-section of the arc-shaped long slot is an inverted T shape.

[0010] The beneficial effects of the present utility model are as follows:

[0011] During use, the bearing body is connected and fixed with the right-angle adapter plate by using the first positioning bolt pair, and the horizontal position of the right-angle adapter plate is adjusted by adjusting the position of the first positioning bolt pair in the arc-shaped long slot; the second positioning bolt pair is installed on the right-angle adapter plate, and the angle of the nut is adjusted by replacing elastic gaskets with different thicknesses to adapt to the angles of different installation positions. Finally, the positioning screw is used to lock and fix with the installation position to quickly complete the positioning and installation. On the one hand, it ensures the adaptability to a complex installation environment. On the other hand, compared with the prior art, the connection strength with the installation position is enhanced, ensuring the working safety. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model;

[0013] Figure 2 is a side view of the right-angle adapter plate and its peripheral components in the present utility model.

[0014] In the figure: 1. Bearing body, 2. Arc-shaped long slot, 3. First positioning bolt pair, 4. Right-angle adapter plate, 401. Horizontal plate section, 402. Vertical plate section, 5. Positioning nut, 6. Second positioning bolt pair, 7. Elastic gasket, 8. Positioning screw, 9. Positioning nut. Detailed Embodiments

[0015] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0016] As Figure 1 , Figure 2 shown, the quick positioning and installation structure of the sliding bearing of the aero-engine fuel system includes a bearing body 1, and a pair of arc-shaped long slots 2 concentric with the bearing body 1 are symmetrically arranged on the front end face of the bearing sleeve block of the bearing body 1.

[0017] Among them, the bearing sleeve block is connected to the right-angle adapter plate 4 by means of an arc-shaped long slot 2 and a first positioning bolt pair 3. The nut of the first positioning bolt pair 3 is embedded in the arc-shaped long slot 2, and the horizontal plate section 401 of the right-angle adapter plate 4 is in close contact with the front end face of the bearing sleeve block. In this embodiment, two through holes are symmetrically provided on the horizontal plate section 401 of the right-angle adapter plate 4. The number of the first positioning bolt pairs 3 is equal to and corresponds one by one to the number of the through holes. The bolt tip of the first positioning bolt pair 3 passes through the arc-shaped long slot 2 and the corresponding through hole and then is connected and fixed to the positioning nut 9 of the first positioning bolt pair 3. The cross-section of the arc-shaped long slot 2 is an inverted T shape.

[0018] A second positioning bolt pair 6 is provided on the vertical plate section 402 of the right-angle adapter plate 4. The nut of the second positioning bolt pair 6 is provided with a screw hole perpendicular to it, and a positioning screw 8 is provided in the screw hole. In this embodiment, a through hole is provided at the center of the vertical plate section 402 of the right-angle adapter plate 4. The bolt tip of the second positioning bolt pair 6 passes through the elastic gasket 7 and the through hole and then is connected and fixed to the positioning nut 5 of the second positioning bolt pair 6.

[0019] Working principle:

[0020] During use, the bearing body 1 is connected and fixed to the right-angle adapter plate 4 by means of the first positioning bolt pair 3, and the horizontal position of the right-angle adapter plate 4 is adjusted by adjusting the position of the first positioning bolt pair 3 in the arc-shaped long slot 2; the second positioning bolt pair 6 is installed on the right-angle adapter plate 4, and the angle of the nut is adjusted by replacing elastic gaskets 7 with different thicknesses to adapt to the angles of different installation positions. Finally, the positioning screw 8 is used to lock and fix with the installation position to quickly complete the positioning installation.

[0021] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equal changes and improvements made within the scope of the creation of the present invention shall still fall within the scope covered by this patent.

Claims

1. A quick positioning and installation structure for a sliding bearing of an aircraft engine fuel system, comprising a bearing body, characterized in that: The front end surface of the bearing sleeve of the bearing body is symmetrically provided with a pair of arc-shaped long grooves concentric with the bearing body. The bearing sleeve is connected to the right-angle adapter plate by using the arc-shaped long groove and the first positioning bolt pair. The nut of the first positioning bolt pair is embedded in the arc-shaped long groove. The horizontal plate section of the right-angle adapter plate is tightly connected to the front end surface of the bearing sleeve. The vertical plate section of the right-angle adapter plate is provided with a second positioning bolt pair. The nut of the second positioning bolt pair is provided with a screw hole perpendicular to it, and a positioning screw is provided in the screw hole.

2. The aviation engine fuel system sliding bearing rapid positioning and installation structure according to claim 1 is characterized in that: Two through holes are symmetrically provided on the horizontal plate section of the right-angle adapter plate. The number of the first positioning bolt pairs is equal to the number of the through holes and corresponds one to one. The bolt tip of the first positioning bolt pair passes through the arc-shaped long groove and the corresponding through hole and is connected and fixed with the positioning nut of the first positioning bolt pair.

3. The aviation engine fuel system sliding bearing rapid positioning and installation structure according to claim 1, characterized in that: A through hole is provided at the center of the vertical plate section of the right-angle adapter plate, and the bolt tip of the second positioning bolt pair passes through the elastic gasket and the through hole and is connected and fixed with the positioning nut of the second positioning bolt pair.

4. The aviation engine fuel system sliding bearing rapid positioning and installation structure according to claim 1, characterized in that: The cross section of the arc-shaped long groove is an inverted T shape.

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