Starting motor mounting structure with good stability

Abstract

The utility model relates to a starting motor mounting structure with good stability, which comprises a cavity, a starting motor is arranged in the cavity, an annular groove is formed in the inner wall of the cavity, a first rubber ring is arranged in the annular groove, and the starting motor is inserted into the first rubber ring; the tail part of the cavity is connected with a mounting plate; a connecting assembly is arranged between the mounting plate and the starting motor; a power output shaft of the starting motor is connected with a clutch which is used for friction driving of an engine rotor to rotate. Through radial supporting and tiny elastic deformation of the first rubber ring, jumping of the starting motor, the clutch and the rotor during high-speed rotation is effectively adapted, the starting stability of an engine is improved, the service life of the engine is prolonged, meanwhile, through optimal design of the connecting assembly, stable connection between the starting motor and the mounting plate is ensured, and the service life of the engine is prolonged. The stability of the starting process is further enhanced; the notch is formed in the end of the clutch shaft sleeve in the clutch, so that the clutch shaft sleeve and the outer cylinder sleeve can be conveniently installed in a screwed mode.

Description

Technical Field

[0001] The present application belongs to the technical field of micro turbojet engines, and in particular relates to a starter motor mounting structure with good stability. Background Art

[0002] The starter motor of a micro turbojet engine is one of its key components. It is responsible for driving the engine rotor to a high enough speed so that it can maintain operation on its own. The starter motor plays a vital role in the engine starting process. In order to meet the needs of engine starting, the starter motor has a high power and speed. The existing starter motor connection method is mainly a rigid connection. Due to a certain coaxiality error in the assembly, the high-speed rotating motor, clutch and rotor will jump, affecting the starting stability and service life of the engine. In addition, the existing turbojet engine starting device clamping method is cumbersome and the assembly efficiency is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the deficiencies in the prior art, thereby providing a starting motor mounting structure with good stability, aiming to achieve at least one of the following technical effects: first, by optimizing the mounting structure of the starting motor, the stability of the micro turbojet engine during starting is improved; second, by improving the structure, assembly is facilitated.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A starting motor mounting structure with good stability, comprising:

[0006] A cavity, wherein a starter motor is arranged in the cavity, an annular groove is arranged on the inner wall of the cavity, a first rubber ring is arranged in the annular groove, and the starter motor is plugged into the first rubber ring;

[0007] The tail of the cavity is connected to a mounting plate, and a connecting component is provided between the mounting plate and the starter motor;

[0008] The power output shaft of the starter motor is connected with a clutch, and the clutch is used for frictionally driving the engine rotor to rotate.

[0009] Preferably, in a starter motor mounting structure with good stability of the utility model, the connecting assembly comprises a flange, one end of the connecting shaft of the flange is fixedly connected to the mounting plate, and the other end is fixedly connected to the end of the starter motor.

[0010] Preferably, in a starter motor mounting structure of the utility model with good stability, the clutch comprises a clutch shaft connected to the power output shaft of the starter motor, a clutch sleeve sleeved on the clutch shaft, and an outer cylinder sleeve sleeved on the clutch sleeve.

[0011] Preferably, in the starter motor mounting structure with good stability of the utility model, a threaded connection structure is provided between the clutch sleeve and the inner wall of the port of the outer cylinder sleeve.

[0012] Preferably, the utility model has a starting motor mounting structure with good stability, the inner cavity of the outer cylinder sleeve is provided with a limiting retaining ring, the limiting retaining ring divides the inner cavity of the outer cylinder sleeve into two cavities, the end of the clutch sleeve is fixedly provided with a boss, the boss is inserted into the axial hole of the limiting retaining ring, and the bottom of the boss is provided with a slot for inserting a screwdriver.

[0013] Preferably, in a starter motor mounting structure with good stability of the utility model, the notch is provided with a blind hole which is not connected with the shaft hole of the clutch sleeve.

[0014] Preferably, in a starter motor mounting structure with good stability of the utility model, a spiral groove is arranged on the clutch sleeve, a driving pin arranged along its radial direction is connected to the clutch shaft, and both ends of the driving pin are respectively arranged in two spiral grooves.

[0015] Preferably, in a starter motor mounting structure with good stability of the utility model, a second rubber ring is arranged in the cavity of the outer cylinder sleeve away from one end of the clutch shaft.

[0016] The beneficial effects of the utility model are:

[0017] (1) Through the radial support and slight elastic deformation of the first rubber ring, the vibration of the starter motor, clutch and rotor during high-speed rotation is effectively adapted, thereby improving the stability and service life of the engine start. At the same time, through the optimized design of the connecting component, the stable connection between the starter motor and the mounting plate is ensured, further enhancing the stability of the starting process;

[0018] (2) By providing a notch at the end of the clutch sleeve in the clutch, the clutch sleeve and the outer cylinder sleeve can be conveniently screwed together for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the external structure of an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present application;

[0022] The reference numerals in the figure are:

[0023] Cavity 10, starter motor 11, first rubber ring 12, mounting plate 13, connecting assembly 14, clutch 15, clutch shaft 151, clutch sleeve 152, outer cylinder sleeve 153, drive pin 154, second rubber ring 155;

[0024] Boss 1521 , notch 1522 , spiral groove 1523 . DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0028] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] Example

[0030] This embodiment provides a starter motor installation structure with good stability. Figure 1 and Figure 2As shown, the structure includes a cavity 10, in which a starter motor 11 is arranged. In order to achieve stable support for the starter motor 11, an annular groove is arranged on the inner wall of the cavity 10, in which a first rubber ring 12 is arranged, and the starter motor 11 is inserted into the first rubber ring 12. The first rubber ring 12 can effectively adapt to the jumping of the starter motor 11 when it rotates at high speed through its radial support function and slight elastic deformation, thereby improving the stability of the starting process.

[0031] The rear of the cavity 10 is connected to a mounting plate 13, and a connecting assembly 14 is provided between the mounting plate 13 and the starter motor 11. The connecting assembly 14 includes a flange 141, and one end of the connecting shaft of the flange 141 is fixedly connected to the mounting plate 13, and the other end is fixedly connected to the end of the starter motor 11. This connection method ensures a stable connection between the starter motor 11 and the mounting plate 13, and improves the stability of the overall structure.

[0032] The power output shaft of the starter motor 11 is connected to a clutch 15, which is used to frictionally drive the engine rotor to rotate. The clutch 15 includes a clutch shaft 151 connected to the power output shaft of the starter motor 11, a clutch sleeve 152 sleeved on the clutch shaft 151, and an outer cylinder sleeve 153 sleeved on the clutch sleeve 152. This structural design enables the clutch 15 to effectively transmit the power of the starter motor 11 to the engine rotor, thereby starting the engine.

[0033] In order to further achieve stable connection and easy maintenance of the clutch, a threaded connection structure is provided between the clutch sleeve 152 and the inner wall of the port of the outer cylinder sleeve 153. This connection method not only ensures a stable connection between the clutch sleeve 152 and the outer cylinder sleeve 153, but also facilitates disassembly and maintenance when necessary.

[0034] The inner cavity of the outer cylinder sleeve 153 is provided with a limit retaining ring, which divides the inner cavity of the outer cylinder sleeve 153 into two cavities. A boss 1521 is fixedly provided at the end of the clutch sleeve 152, and the boss 1521 is inserted into the shaft hole of the limit retaining ring. A notch 1522 for inserting a screwdriver is provided at the bottom of the boss 1521. This design allows the boss 1521 to be easily rotated by a screwdriver when the clutch is installed or the position of the clutch sleeve 152 needs to be adjusted or other maintenance operations are performed, so that the clutch can be assembled and accurately adjusted.

[0035] In order to ensure the safety of screwdriver operation, the notch 1522 is provided with a blind hole, which is not connected with the shaft hole of the clutch sleeve 152. In this way, the sealing performance of the clutch is guaranteed.

[0036] In order to achieve stable transmission between the clutch shaft 151 and the clutch sleeve 152, a spiral groove 1523 is provided on the clutch sleeve 152, and a driving pin 154 arranged along its radial direction is connected to the clutch shaft 151, and the two ends of the driving pin 154 are respectively arranged in two spiral grooves 1523. This design enables the clutch sleeve 152 to be stably driven close to the rotor end through the cooperation of the driving pin 154 and the spiral groove 1523 when the clutch shaft 151 rotates, thereby achieving power transmission.

[0037] In order to further improve the stability of clutch transmission, a second rubber ring 155 is arranged in the cavity of the outer cylinder sleeve 153 away from one end of the clutch shaft 151. The second rubber ring 155 is frictionally driven with the end of the rotor, thereby driving the rotor to rotate.

[0038] The starter motor installation method of the utility model effectively improves the stability of the micro turbojet engine when starting by optimizing the installation structure of the starter motor and the design of the clutch. At the same time, through the use of the first rubber ring, the vibration caused by the assembly coaxiality error is reduced, and the service life of the engine is extended.

[0039] The notch at the end of the clutch sleeve inside the clutch facilitates the threaded installation of the clutch sleeve and the outer cylinder sleeve.

[0040] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A starting motor mounting structure with good stability, characterized in that: include: A cavity ((10), wherein a starter motor ((11) is arranged in the cavity ((10), an inner wall of the cavity (10) is provided with an annular groove, a first rubber ring (12) is arranged in the annular groove, and the starter motor (11) is plugged into the first rubber ring (12); The rear portion of the cavity (10) is connected to a mounting plate (13), and a connecting assembly (14) is provided between the mounting plate (13) and the starter motor (11); The power output shaft of the starter motor (11) is connected to a clutch (15), and the clutch (15) is used to frictionally drive the engine rotor to rotate.

2. A starting motor installation structure with good stability according to claim 1, characterized in that: The connecting assembly (14) includes a flange (141), one end of the connecting shaft of the flange (141) is fixedly connected to the mounting plate (13), and the other end is fixedly connected to the end of the starting motor (11).

3. A starting motor mounting structure with good stability according to claim 1 or 2, characterized in that: The clutch (15) comprises a clutch shaft (151) connected to the power output shaft of the starter motor (11), a clutch shaft sleeve (152) sleeved on the clutch shaft (151), and an outer cylinder sleeve (153) sleeved on the clutch shaft sleeve (152).

4. A starter motor mounting structure with good stability according to claim 3, characterized in that: A threaded connection structure is provided between the clutch sleeve (152) and the inner wall of the port of the outer cylinder sleeve (153).

5. A starter motor mounting structure with good stability according to claim 4, characterized in that: The inner cavity of the outer cylinder sleeve (153) is provided with a limit retaining ring, and the limit retaining ring divides the inner cavity of the outer cylinder sleeve (153) into two cavities. The end of the clutch sleeve (152) is fixedly provided with a boss (1521), and the boss (1521) is inserted into the shaft hole of the limit retaining ring. The bottom of the boss ((1521) is provided with a notch ((1522)) for inserting a screwdriver.

6. A starting motor installation structure with good stability according to claim 5, characterized in that: The notch (1522) is provided with a blind hole which is not connected to the shaft hole of the clutch sleeve (152).

7. A starter motor mounting structure with good stability according to claim 6, characterized in that: The clutch sleeve (152) is provided with a spiral groove (1523), and the clutch shaft (151) is connected with a driving pin (154) arranged along its radial direction, and the two ends of the driving pin (154) are respectively arranged in the two spiral grooves (1523).

8. A starter motor mounting structure with good stability according to claim 7, characterized in that: A second rubber ring (155) is arranged in the cavity of the outer cylinder sleeve (153) at one end away from the clutch shaft (151).

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