Adjustable engine suspension structure

Abstract

The utility model discloses an adjustable engine suspension structure which comprises a machine frame connecting seat, a suspension shell is arranged in the machine frame connecting seat, a main shock pad, an auxiliary shock pad, a shock absorber cover and an engine connecting seat are arranged in the suspension shell, a connecting piece is arranged below the machine frame connecting seat, and the connecting piece is connected with the engine connecting seat. A suspension bracket adjusting nut and a suspension bracket fixing bolt are arranged on the connecting piece; the engine suspension structure has the advantages that the problems that in the arrangement process of the suspension structure, installation is difficult, the requirement for machining precision of rack installation points is high, and the engine suspension structure of a new type needs to be redesigned are effectively solved, and the engine suspension structure has the advantages of being simple in structure, flexible to install and low in requirement for machining precision.

Description

Technical Field

[0001] The utility model relates to the technical field of engine mounting brackets, and specifically relates to an adjustable engine mounting structure. Background Art

[0002] The powertrain mounting structure is the connection bridge between the engine and the aircraft frame. On the one hand, the mounting structure needs to block the engine vibration from being transmitted to the fuselage to avoid causing abnormal vibration of the whole aircraft. On the other hand, the mounting structure needs to prevent the abnormal jitter caused by the influence of external air flow during the flight of the aircraft from being transmitted to the engine, causing vibration and impact.

[0003] At present, the common powertrain mounting structures on the market are all special parts. With the change of aircraft models, even if the powertrain is the same, the structure needs to be redesigned. The existing special powertrain mounting structures have the characteristics of complex structure, high machining accuracy and complex assembly process. At the same time, they have the disadvantages of inability to adjust dimensional tolerances and inability to perform flexible assembly, and also have relatively high requirements for the machining accuracy of the mounting points on the fuselage frame. If the aircraft model is changed, even if the powertrain is the same, the powertrain mounting structure needs to be redesigned. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a powertrain mounting structure that is easy to assemble and has relatively low requirements for the machining accuracy of the fuselage, aiming at solving the problems of difficult installation during the layout of the mounting structure, high machining accuracy requirements for the mounting points on the frame, and the need to redesign the engine mounting structure for new aircraft models.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An adjustable engine mounting structure, including an aircraft frame and a frame connection seat connected to the aircraft frame, and its technical key points are:

[0006] A connecting member is arranged below the frame connection seat. An engine mounting bracket adjusting nut and an engine mounting bracket fixing bolt are sequentially arranged on the connecting member from top to bottom. The engine mounting bracket fixing bolt is connected to the aircraft frame, and the engine mounting bracket adjusting nut is used to lock the frame connection seat.

[0007] An engine mounting housing is arranged inside the frame connection seat. A main shock pad, a secondary shock pad, a shock absorber cover and an engine connection seat are arranged inside the engine mounting housing. One secondary shock pad is arranged on each side of the main shock pad. One end of one secondary shock pad is connected to the shock absorber cover, and the other end of the other secondary shock pad is connected to the engine connection seat.

[0008] In the middle of the suspension housing, there is also an engine mounting bolt, which passes through the horizontal axis center of the suspension housing, and the engine mounting bolt is a single-bolt fixed structure.

[0009] Preferably, the main shock pad and two sub-shock pads form a suspension soft pad, which is wrapped around the outer circumference of the engine mounting bolt; the main shock pad is used to balance the vibrations in the axial direction and the up-and-down direction of the engine.

[0010] Preferably, the main shock pad is composed of a housing, a rubber shock pad and a skeleton from the outside to the inside, and the main shock pad is an integral structure.

[0011] Preferably, the suspension housing is installed inside the frame connection seat, and the suspension housing and the frame connection seat form the entire shock absorber assembly.

[0012] Preferably, the engine connection seat is fixed tightly on the engine support through the engine mounting bolt.

[0013] Preferably, the suspension bracket adjusting nut is a sleeve with threads or an inlay block with threads.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides an engine power assembly suspension structure that is easy to assemble and has relatively low requirements for the machining accuracy of the fuselage. At the same time, when the installation points on the aircraft are adjusted appropriately, the suspension structure does not need to be adjusted again; through the further optimization of the engine mounting bracket of the suspension, the usual two-bolt fixing method is changed to a single-bolt connection method, which only restricts the freedom degree of the engine in the left-right direction and does not restrict the freedom degree in the vertical direction of the installation point, improving the processability of the suspension and the engine installation; at the same time, the main shock pad and the sub-shock pad inside the suspension housing can be freely disassembled and combined, and it can be realized that by adjusting the stiffness of the shock pad, it can adapt to different models of engines and frames with different strength requirements. It has the characteristics of simple structure, flexible installation and low requirements for machining accuracy. Description of the Drawings

[0015] Figure 1 It is a schematic cross-sectional view of the internal structure of the engine suspension structure;

[0016] Figure 2 It is a schematic overall view of the external structure of the engine suspension structure;

[0017] Figure 3 It is for Figure 1 the left view of

[0018] Figure 4 It is an exploded view of the engine suspension structure;

[0019] Figure 5 It is a diagram of the usage state of the connection between the engine suspension structure and the aircraft frame.

[0020] In the figure: 1. Engine connecting seat; 2. Auxiliary shock pad; 3. Engine mounting bolt; 4. Main shock pad; 5. Shock absorber cover; 6. Frame connecting seat; 7. Mounting bracket adjusting nut; 8. Connecting piece; 9. Mounting bracket fixing bolt. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 , the present invention provides a technical solution: an adjustable engine mounting structure, including an engine main shock pad 4, an engine connecting seat 1, a frame connecting seat connected to the frame, and a mounting bracket adjusting nut 7. The main shock pad and two auxiliary shock pads form a mounting cushion. The main shock pad is composed of a housing, a rubber shock pad, and a skeleton from the outside to the inside. After assembling the housing and the skeleton, the main shock pad is vulcanized with rubber into an integral structure.

[0023] The main shock pad 4 and two auxiliary shock pads 2 form a mounting cushion, which is wrapped around the outer circumference of the engine mounting bolt 3. The main shock pad 4 is mainly used to balance the vibration of the engine in the axial direction and the up and down directions. The main shock pad 4 and the auxiliary shock pads 2 can be freely disassembled and combined, and the stiffness of the shock pads can be adjusted to adapt to engines and frames with different stiffness requirements.

[0024] In this application, the engine mounting structure optimizes the engine mounting bracket of the mount. It is changed from the usual two-bolt fixation to a single-bolt connection. The mounting seat connected to the engine is in the form of a single-bolt fixation, which can effectively avoid the complex installation process brought by multi-bolt installation. The single-bolt connection only restricts the freedom of the engine in the left and right directions and does not restrict the freedom of the installation point in the vertical direction. The frame connection structure can freely rotate around the installation surface, improving the processability of the mounting structure and the engine installation; the engine connecting seat can be adjusted to adapt to the installation of different models of engines.

[0025] In this application, the frame connection seat connected to the aircraft frame is for mounting on the aircraft frame. When installing the engine connection seat on the engine, the engine connection seat is closely attached to the engine support, and then fixedly connected by engine mounting bolts. Below the frame connection seat 6, there is a connecting member 8, and the connecting member 8 successively suspends a suspension bracket adjusting nut 7 and a suspension bracket fixing bolt 9 from top to bottom. The suspension bracket fixing bolt 9 is connected to the aircraft frame. Adjust the suspension bracket adjusting nut 7 to a suitable position and lock the frame connection seat 6 with the suspension bracket adjusting nut 7.

[0026] In this application, a suspension housing is provided inside the frame connection seat. The suspension housing is installed inside the frame connection seat, and the suspension housing and the frame connection seat form the entire shock absorber assembly. Inside the suspension housing, there are a main shock pad, a secondary shock pad, a shock absorber cover, and an engine connection seat. On both sides of the main shock pad 4, there is a secondary shock pad 2 respectively. One end of one secondary shock pad 2 is connected to the shock absorber cover 5, and the other end of the other secondary shock pad is connected to the engine connection seat 1;

[0027] In the middle of the suspension housing, there is also an engine mounting bolt. The engine mounting bolt penetrates through the horizontal axis of the suspension housing, and the engine mounting bolt is in a single-bolt fixing form.

[0028] The engine connection seat is fixedly attached to the engine support by the engine mounting bolt.

[0029] The suspension bracket adjusting nut is a sleeve with threads, a block with threads, or other similar adjusting structures derived based on this principle and can be replaced. The suspension bracket adjusting nut and the suspension bracket fixing bolt are both fixed on the connecting member 8. In this application, the connecting member is a cylindrical structure, but the appearance of the connecting member can also be square or other shapes and can be replaced.

[0030] An adjustable engine mounting structure protected by this application optimizes the engine mounting bracket of the mount. It changes from the usual two-bolt fixation to a single-bolt connection, only restricting the freedom degree of the engine in the left-right direction and not restricting the freedom degree in the vertical direction of the mounting point. The frame connection structure can freely rotate around the mounting surface, improving the processability of the mount and engine installation;

[0031] At the same time, the suspension bracket adjusting nut on the frame connection seat in this utility model is an adjustable structure, having a large design redundancy for the gap change between the engine and the frame bracket, and can greatly reduce the precision of the machining dimensions of the engine mount on the frame.

[0032] Furthermore, the main shock pad and the secondary shock pad inside the mount can be freely disassembled and combined, and the stiffness of the shock pad can be adjusted to adapt to engines of different models and frames with different strength requirements.

[0033] Since the mounting length of the engine mounting structure of the present application can be freely adjusted, the mounting angle of the engine on the whole machine can be adjusted to meet the requirements of different powers for different models of the whole machine; moreover, the maintainability of the engine mounting structure of the present application is improved.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front part", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0035] In the present utility model, unless otherwise clearly specified and defined, terms such as "mount", "set", "connect", "fix", "swivel connection", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable engine suspension structure, comprising an aircraft frame and a frame connection seat (6) connected to the aircraft frame, characterized in that: A connecting piece (8) is provided below the frame connecting seat (6), and the connecting piece (8) is provided with a suspension bracket adjusting nut (7) and a suspension bracket fixing bolt (9) in sequence from top to bottom, the suspension bracket fixing bolt (9) is connected to the aircraft frame, and the suspension bracket adjusting nut (7) is used to lock the frame connecting seat (6); A suspension shell is arranged in the frame connection seat (6), and a main shock absorbing pad (4), a secondary shock absorbing pad (2), a shock absorber cover (5) and an engine connection seat (1) are arranged in the suspension shell, and a secondary shock absorbing pad (2) is arranged on each side of the main shock absorbing pad (4), wherein the other end of one of the secondary shock absorbing pads (2) is connected to the shock absorber cover (5), and the other end of the other secondary shock absorbing pad (2) is connected to the engine connection seat (1); An engine mounting bolt (3) is also provided in the middle of the suspension shell, and the engine mounting bolt (3) passes through the transverse axis of the suspension shell. The engine mounting bolt (3) is a single bolt fixing structure.

2. The adjustable engine suspension structure according to claim 1, characterized in that: The main shock absorbing pad (4) and the two auxiliary shock absorbing pads (2) form a suspension cushion, which is wrapped around the outer circumference of the engine mounting bolt (3); the main shock absorbing pad (4) is used to balance the vibration of the engine in the axial direction and in the up-and-down direction.

3. The adjustable engine suspension structure according to claim 2, characterized in that: The main shock-absorbing pad (4) is composed of an outer shell, a rubber shock-absorbing pad and a frame from the outside to the inside, and the main shock-absorbing pad (4) is an integrated structure.

4. The adjustable engine suspension structure according to claim 1, characterized in that: The suspension shell is installed inside the frame connecting seat (6), and the suspension shell and the frame connecting seat (6) form the entire shock absorber assembly.

5. The adjustable engine suspension structure according to claim 1, characterized in that: The engine connection seat (1) is fixed tightly against the engine support via engine mounting bolts.

6. The adjustable engine suspension structure according to claim 1, characterized in that: The suspension bracket adjusting nut (7) is a sleeve with threads or an insert with threads.

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