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CN-122009497-A - Mounting structure of engine

CN122009497ACN 122009497 ACN122009497 ACN 122009497ACN-122009497-A

Abstract

The invention discloses an engine mounting structure, which relates to the technical field of engine mounting and comprises an engine assembly and a mounting frame, wherein the engine assembly is mounted on the mounting frame through an engine fixed connection assembly, the engine fixed connection assembly comprises a fixed support, the fixed support can be respectively connected with the engine assembly and the mounting frame, a fixed buffer cushion is arranged between the fixed support and the engine assembly, the engine assembly is also connected with an engine limiting connection assembly, and the engine limiting connection assembly is far away from the engine limiting connection assembly and can be connected with a machine body structure. According to the invention, the fixed buffer cushion is arranged between the mounting frame and the engine component, the elastic deformation of the fixed buffer cushion is utilized to absorb vibration energy and buffer dynamic load, and the engine component can be limited to rotate through the engine limiting connection component, so that the engine component is restrained, and the mounting stability of the engine component is ensured.

Inventors

  • CHEN ZHE
  • ZHANG LICONG
  • LIN MUYANG
  • XU YOUSONG
  • ZHAO QIJUN

Assignees

  • 南京航空航天大学

Dates

Publication Date
20260512
Application Date
20260402

Claims (10)

  1. 1. The mounting structure of the engine is characterized by comprising an engine assembly (1) and a mounting frame (2), wherein the engine assembly (1) is mounted on the mounting frame (2) through an engine fixed connection assembly (3); the engine fixed connection assembly (3) comprises a fixed support (301), the fixed support (301) can be respectively connected with the engine assembly (1) and the mounting frame (2), and a fixed buffer pad (302) is arranged between the fixed support (301) and the engine assembly (1); The engine assembly (1) is further connected with an engine limiting connection assembly (4), and the engine limiting connection assembly (4) is far away from the engine assembly (1) and can be connected with a machine body structure.
  2. 2. The mounting structure of an engine according to claim 1, wherein a stationary bush (305) is fixed to the engine assembly (1); The two ends of the fixed support (301) are respectively provided with a fixed buffer pad (302), and one end of the fixed buffer pad (302) far away from the fixed support (301) is provided with a fixed mounting disc (306); the engine fixed connection assembly (3) further comprises a fixing bolt (303) and a fixing nut (304), the fixing bolt (303) can penetrate through the centers of the fixing support (301), the fixing buffer pads (302), the fixing mounting plates (306) and the fixing bushing (305), and the end portion of the fixing bolt (303) can be in threaded connection with the fixing nut (304).
  3. 3. The mounting structure of an engine according to claim 1, wherein the engine limit connecting assembly (4) comprises a limit support (401), the limit support (401) is fixed on the engine assembly (1), and a limit buffer pad (402) is arranged between the limit support (401) and the engine assembly (1).
  4. 4. The mounting structure of an engine according to claim 3, wherein two ends of the limit support (401) are respectively provided with a limit buffer pad (402), and one end of the limit buffer pad (402) far away from the limit support (401) is provided with a limit mounting disc (403); The engine limiting connection assembly (4) further comprises a limiting stud (404), the limiting stud (404) can penetrate through the limiting support (401), the limiting buffer pad (402) and the limiting mounting plate (403), one end of the limiting stud (404) is in threaded connection with the engine assembly (1), and the other end of the limiting stud (404) is in threaded connection with a limiting nut (406).
  5. 5. The mounting structure of an engine according to claim 3, wherein the engine limit connecting assembly (4) further comprises a limit pull rod (407), one end of the limit pull rod (407) can be rotatably connected with the limit support (401), and the other end of the limit pull rod (407) is rotatably connected with a machine body structure.
  6. 6. The mounting structure of an engine according to claim 5, wherein two connecting lugs (406) are arranged on the outer wall of the limiting support (401), a joint bearing (408) is arranged at one end of the limiting pull rod (407), the joint bearing (408) can extend into the space between the two connecting lugs (406), and the connecting lugs (406) are connected with the joint bearing (408) through connecting bolts (409).
  7. 7. The mounting structure of an engine according to claim 6, wherein a fastening steel sleeve (410) is provided between the connecting lug (406) and the knuckle bearing (408).
  8. 8. The mounting structure of an engine according to claim 1, wherein the engine assembly (1) includes an engine body (101) and an engine side mount bracket (102), and the engine body (101) is fixed to the engine side mount bracket (102).
  9. 9. The mounting structure of an engine according to claim 1, wherein the engine assembly (1) is mounted on a side wall of the mounting frame (2).
  10. 10. The mounting structure of an engine according to claim 1, wherein the mounting frame (2) comprises an engine mounting front frame (201) and an engine mounting rear frame (202), and the bottoms of the engine mounting front frame (201) and the engine mounting rear frame (202) are connected by a connecting truss (203).

Description

Mounting structure of engine Technical Field The invention relates to the technical field of engine installation, in particular to an engine installation structure. Background The tilting rotorcraft has the core advantages of vertical take-off and landing and high-speed cruising, has a wide-area flight envelope, can effectively fill the technical blank between a helicopter and a fixed-wing aircraft, and has remarkable application value in multi-scene flight tasks. The piston engine can perfectly meet the core requirements of small and medium unmanned aircrafts on a power system, such as high efficiency, reliability and easy guarantee, by virtue of low oil consumption, high reliability and excellent complex environment adaptability, and becomes a preferred power scheme. Most of the existing piston engines adopt rigid connection (such as directly mounted on a machine body or a machine body frame through bolts), however, due to the technical characteristics of high inherent vibration amplitude and continuous generation of torsional moment of the piston engine, the vibration and torsional effect of the piston engine can be directly transmitted to the machine body structure under the condition of rigid connection. The problem can accelerate fatigue damage of the fuselage structure, shorten the service life of the whole aircraft, seriously damage the flight stability of the aircraft and influence the task execution precision. Accordingly, there is a need in the art for a new engine mounting structure that addresses the above-described issues. Disclosure of Invention The invention aims to provide an engine mounting structure which solves the problems in the prior art and can reduce the vibration amplitude of an engine assembly to a machine body structure and restrict the position of the engine assembly. In order to achieve the above object, the present invention provides the following solutions: The invention discloses an engine mounting structure, which comprises an engine assembly and a mounting frame, wherein the engine assembly is mounted on the mounting frame through an engine fixed connection assembly; the engine fixed connection assembly comprises a fixed support, the fixed support can be respectively connected with the engine assembly and the mounting frame, and a fixed buffer cushion is arranged between the fixed support and the engine assembly; the engine assembly is also connected with an engine limiting connection assembly, and the engine limiting connection assembly is far away from the engine assembly and can be connected with a machine body structure. Preferably, a fixed bushing is fixed on the engine assembly; the two ends of the fixed support are respectively provided with one fixed buffer cushion, and one end of the fixed buffer cushion, which is far away from the fixed support, is provided with a fixed mounting disc; The engine fixed connection assembly further comprises a fixing bolt and a fixing nut, wherein the fixing bolt can penetrate through the center of the fixing support, the center of the fixing buffer cushion, the center of the fixing mounting plate and the center of the fixing bushing, and the end portion of the fixing bolt can be in threaded connection with the fixing nut. Preferably, the engine limiting connection assembly comprises a limiting support, the limiting support is fixed on the engine assembly, and a limiting buffer cushion is arranged between the limiting support and the engine assembly. Preferably, two ends of the limiting support are respectively provided with a limiting buffer pad, and one end of the limiting buffer pad, which is far away from the limiting support, is provided with a limiting mounting disc; The engine limiting connection assembly further comprises a limiting stud, the limiting stud can penetrate through the limiting support, the limiting buffer cushion and the limiting mounting plate, one end of the limiting stud is in threaded connection with the engine assembly, and the other end of the limiting stud is in threaded connection with a limiting nut. Preferably, the engine limiting connection assembly further comprises a limiting pull rod, one end of the limiting pull rod can be rotationally connected with the limiting support, and the other end of the limiting pull rod is rotationally connected with the machine body structure. Preferably, two connecting lugs are arranged on the outer wall of the limit support, a joint bearing is arranged at one end of the limit pull rod, the joint bearing can extend into the space between the two connecting lugs, and the connecting lugs are connected with the joint bearing through connecting bolts. Preferably, a fastening steel sleeve is arranged between the connecting lug and the knuckle bearing. Preferably, the engine assembly comprises an engine block and an engine lateral suspension bracket, the engine block being secured to the engine lateral suspension bracket. Preferably, the engine assembly is mounted to a sid