Gear linkage type micro turbojet engine multi-pipe annular fuel and lubricating oil distribution tool

Abstract

The utility model discloses a gear linkage type micro turbojet engine multi-tube annular fuel and lubricating oil distribution tool, belongs to the technical field of turbojet engines, and solves the problems of high manual operation intensity and low test efficiency of fuel and lubricating oil tests of existing micro turbojet engines. The internal gear is manually rotated to drive the multiple external gears to rotate so as to change the included angle between the wire groove and the bent oil supply pipe, so that fuel and lubricating oil upwards sprayed out of the bent oil supply pipe can be blocked by the external gears or directly sprayed out of the wire groove, and the change of the sealing state of the bent oil supply pipe is achieved; the fuel and lubricating oil test can be completed only through the liquid collected by the gas pipe, and compared with a plunger type plug, the technical process is simplified, the installation time and the number of tool parts are reduced, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of turbojet engine technology, specifically to a gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution tooling. Background Technology

[0002] The lubricating oil test of a micro turbojet engine is one of the important testing steps in the turbojet engine manufacturing process. Turbojet engines have many oil supply lines, especially the J-shaped bends. Because the sealing and pressure loss of each bend need to be confirmed, each bend needs to be tested with a plunger plug, which is not only labor-intensive but also inefficient. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a gear-linked multi-pipe annular fuel and lubricating oil distribution fixture for micro turbojet engines, which solves the problems of high manual operation intensity and low testing efficiency in existing micro turbojet engine fuel and lubricating oil testing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A gear-driven micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture is provided, including a fixing seat for fixing a test piece. An internal gear and multiple external gears are rotatably arranged inside the fixing seat. The multiple external gears are evenly distributed in an annular shape among the internal gears and all mesh with the internal gears. A wire groove is opened through the middle of each external gear. Multiple air pipes communicating with the wire grooves are provided on the fixing seat. The multiple curved oil supply pipes of the test piece pass through the multiple wire grooves and enter the air pipes.

[0006] The working principle of this solution is as follows: a gear-linked micro turbojet engine multi-pipe annular fuel-lubricating oil distribution fixture is installed on the test equipment, and the test piece is fitted onto the distribution fixture. By manually rotating the internal gear, multiple external gears are rotated to change the angle between the groove and the curved oil supply pipe. As a result, the fuel-lubricating oil sprayed upward from the curved oil supply pipe is blocked by the external gears or sprayed directly from the groove, thus changing the sealing state of the curved oil supply pipe. The liquid collected through the air pipe can then complete the fuel-lubricating oil test. Compared with the plunger-type plug, this solution simplifies the process, reduces installation time and the number of fixture parts, and improves testing efficiency.

[0007] Furthermore, the mounting base includes a base with a through hole in the center for the bearing chamber of the test piece to pass through. The base also has a stepped circle, and the bottom of the internal gear has a stepped groove that fits onto the stepped circle. The through hole in the center of the base allows the bearing chamber of the test piece to pass directly through, ensuring the test piece does not wobble. The stepped circle engages with the stepped groove at the bottom of the internal gear, providing stable rotational support for the internal gear and preventing it from shifting or vibrating during testing.

[0008] Furthermore, a top plate is provided on the base and fitted onto the stepped circle. The top and bottom columns of each external gear are rotatably mounted in the top plate and the stepped circle, respectively. The top plate and the stepped circle form a double-layer support, fixing the rotation point of the external gear at the top and bottom, distributing the load during gear meshing, and reducing wear and jamming.

[0009] Furthermore, a limiting post is provided on the internal gear, and an arc-shaped limiting groove is provided on the top plate to accommodate the limiting post. The combination of the limiting post and the arc-shaped limiting groove prevents excessive rotation and incomplete movement between the internal gear and the top plate.

[0010] Furthermore, the mounting base also includes a mounting plate fixed to the base, with an oil tray in the center of the mounting plate to collect lubricating oil from the bearing housing. The mounting plate is fixed to the base, providing additional support points, while the oil tray, located in the center of the mounting plate, is specifically designed to collect lubricating oil leaking from the bearing housing, preventing oil contamination of the test area or impact on other components.

[0011] Furthermore, multiple support columns are installed between the base and the mounting plate. These support columns form a rigid frame between the base and the mounting plate to resist vibration or load during the testing process.

[0012] Furthermore, the top and bottom of each support column are bolted to the base and mounting plate, respectively. The bolted connection facilitates disassembly and installation.

[0013] This utility model discloses a gear-linked micro turbojet engine multi-pipe annular fuel-lubricating oil distribution tooling, the beneficial effects of which are:

[0014] This invention uses a manually rotated internal gear to drive multiple external gears to change the angle between the groove and the curved oil supply pipe. As a result, the lubricating oil sprayed upward from the curved oil supply pipe is blocked by the external gears or sprayed directly from the groove, thus changing the sealing state of the curved oil supply pipe. The liquid collected through the air pipe can then be used to complete the lubricating oil test. Compared with the plunger-type plug, this invention simplifies the process, reduces installation time and the number of tooling parts, and improves testing efficiency. Attached Figure Description

[0015] Figure 1 A schematic diagram of the tooling and test piece for dispensing lubricating oil;

[0016] Figure 2 A schematic diagram of the combination of the lubricating oil dispensing fixture and the test piece;

[0017] Figure 3 Cross-sectional view of the lubricating oil dispensing fixture and test piece;

[0018] Figure 4 Exploded view of the lubricating oil dispensing fixture;

[0019] The components are: 1. Fixed seat; 11. Base; 111. Stepped circle; 12. Top plate; 121. Arc-shaped limiting groove; 13. Mounting plate; 131. Oil receiving tray; 2. Internal gear; 21. Limiting post; 3. External gear; 4. Air pipe; 5. Test piece; 51. Diffuser; 52. Bending oil supply pipe; 53. Bearing chamber. Detailed Implementation

[0020] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0021] This embodiment provides a gear-linked multi-pipe annular fuel and lubricating oil distribution tool for a micro turbojet engine, which solves the problems of high manual operation intensity and low testing efficiency in existing micro turbojet engine fuel and lubricating oil tests. It is shown in detail below.

[0022] refer to Figure 1 and Figure 2 A gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution tooling includes a fixed base 1, which includes a base 11, a top plate 12 and a mounting plate 13.

[0023] refer to Figure 3 and Figure 4 The base 11 is rotatably equipped with an internal gear 2 and multiple external gears 3. The multiple external gears 3 are evenly distributed in a ring in the internal gear 2 and all mesh with the internal gear 2. A wire groove is opened through the middle of each external gear 3. Multiple air pipes 4 are provided on the base 11 and communicate with the wire grooves. Each air pipe 4 is connected to the testing equipment. Among them, multiple curved oil supply pipes 52 of the test piece 5 pass through multiple wire grooves and enter the air pipes 4.

[0024] Specifically, the base 11 has a through hole in the middle for the bearing chamber 53 of the test piece 5 to pass through. The base 11 has a stepped circle 111, and the bottom of the internal gear 2 has a stepped groove that fits into the stepped circle 111. The through hole in the middle of the base 11 allows the bearing chamber 53 of the test piece 5 to pass through directly, ensuring that the test piece 5 will not wobble. The stepped circle 111 cooperates with the stepped groove at the bottom of the internal gear 2, providing a stable rotational support for the internal gear 2 and preventing the gear from shifting or vibrating during the test.

[0025] The top plate 12 is fitted onto the stepped circle 111, and the top and bottom pillars of each external gear 3 are rotatably mounted in the top plate 12 and the stepped circle 111, respectively. Both the top plate 12 and the stepped circle 111 have accommodating holes arranged in a ring. The top plate 12 and the stepped circle 111 form a double-layer support, fixing the rotation point of the external gear 3 at the top and bottom, distributing the load during gear meshing, and reducing wear and jamming.

[0026] To avoid excessive rotation and incomplete movement between the gear and the top plate 12, a limiting post 21 is provided on the internal gear 2, and an arc-shaped limiting groove 121 for accommodating the limiting post 21 is provided on the top plate 12.

[0027] Mounting plate 13 is fixed to base 11 by multiple support columns, with the top and bottom of each support column bolted to base 11 and mounting plate 13 respectively. The bolted connection facilitates disassembly and installation. An oil collection tray 131 is provided in the center of mounting plate 13 to collect lubricating oil from bearing chamber 53. Mounting plate 13 is fixed to base 11, providing additional support points, while the oil collection tray 131, located in the center of mounting plate 13, is specifically designed to collect leaked lubricating oil from bearing chamber 53, preventing oil contamination of the test area or impact on other components.

[0028] In this embodiment, all structures in the gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture are made of aluminum alloy, which is low in cost and lightweight. Furthermore, test piece 5 is existing technology, including a bearing housing 53, on which a diffuser 51 is installed. Multiple curved oil supply pipes 52 are circumferentially connected to the diffuser 51. Since this is existing technology, its specific working principle and connection relationships will not be described in detail in this embodiment.

[0029] The working principle of this solution is as follows:

[0030] A gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture is installed on the testing equipment, and the test piece 5 is placed on the distribution fixture. By manually rotating the internal gear 2, multiple external gears 3 are rotated to change the angle between the groove and the curved oil supply pipe 52. As a result, the fuel and lubricating oil sprayed upward from the curved oil supply pipe 52 is blocked by the external gears 3 or directly sprayed out from the groove, thus changing the sealing state of the curved oil supply pipe 52. The liquid collected through the air pipe 4 can complete the fuel and lubricating oil test. Compared with the plunger-type plug, the process is simplified, the installation time and the number of tooling parts are reduced, and the testing efficiency is improved.

[0031] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A gear-driven micro turbojet engine multi-pipe annular fuel-lubricating oil distribution fixture, characterized in that, The device includes a fixing seat (1) for fixing the test piece (5). An internal gear (2) and a plurality of external gears (3) are rotatably arranged inside the fixing seat (1). The plurality of external gears (3) are evenly distributed in a ring in the internal gear (2) and all mesh with the internal gear (2). A wire groove is opened through the middle of each external gear (3). A plurality of air pipes (4) communicating with the wire groove are provided on the fixing seat (1). Among them, the multiple curved oil supply pipes (52) of the test piece (5) pass through multiple grooves and enter the air pipe (4).

2. The gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture according to claim 1, characterized in that, The fixed base (1) includes a base (11), the middle of which is provided with a through hole for the bearing chamber (53) on the test piece (5) to pass through, and a stepped circle (111) is provided on the base (11), and the bottom of the internal gear (2) is provided with a stepped circle groove fitted on the stepped circle (111).

3. The gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture according to claim 2, characterized in that, The base (11) is provided with a top plate (12) sleeved on the stepped circle, and the top column and bottom column of each external gear (3) are respectively rotatably disposed in the top plate (12) and the stepped circle.

4. The gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture according to claim 3, characterized in that, The internal gear (2) is provided with a limiting post (21), and the top plate (12) is provided with an arc-shaped limiting groove (121) for accommodating the limiting post (21).

5. The gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture according to claim 3, characterized in that, The fixed base (1) also includes a mounting plate (13) fixed on the base (11), and the mounting plate (13) has an oil receiving tray (131) in the middle to receive the lubricating oil in the bearing chamber (53).

6. The gear-linked micro turbojet engine multi-pipe annular fuel-lubricating oil distribution fixture according to claim 5, characterized in that, Multiple support columns are provided between the base (11) and the mounting plate (13).

7. The gear-linked micro turbojet engine multi-pipe annular fuel and lubricating oil distribution fixture according to claim 6, characterized in that, The top and bottom of each of the support columns are bolted to the base (11) and the mounting plate (13), respectively.

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