Adjustable shock-absorbing mounting support for tiltrotor aircraft

Abstract

The utility model discloses an adjustable shock-absorbing mounting support for a tiltrotor aircraft in the technical field of tiltrotor aircraft, comprising a main mounting support and two auxiliary mounting supports connected via an adjustable support arm, the main mounting support being hinged to the middle of the adjustable support arm, and the two auxiliary mounting supports being connected to the two ends of the adjustable support arm; the mounting surfaces of the main mounting support and the two auxiliary mounting supports are arranged facing each other, and the utility model designs a two-stage universal adjustment mechanism, and when there is a manufacturing error or an assembly error in a structural member, the position of the mounting support can be fine-tuned to achieve a stress-free assembly effect; the universal adjustment of the shock-absorbing mounting support can be realized, and the utility model can be used in the installation of a transmission system of a tiltrotor aircraft.

Description

Technical Field

[0001] The utility model relates to the technical field of tiltrotor aircraft, in particular to a mounting support for a transmission system of a tiltrotor aircraft. Background Art

[0002] A large tilt-rotor aircraft transmission system is disclosed in the prior art, and its publication number is: CN115771614A. It is connected to the nacelle structure through a mounting node. The existing mounting node is in the form of a fixed structure + shock-absorbing pad. When the manufacturing and assembly errors are large, the shock-absorbing mounting support may not be installed or may be assembled with stress. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an adjustable shock-absorbing mounting support for a tiltrotor aircraft, which solves the problem that the mounting position of the mounting section cannot be adjusted.

[0004] The purpose of the utility model is achieved as follows: an adjustable shock-absorbing mounting support for a tiltrotor aircraft comprises a main mounting support and two auxiliary mounting supports connected via an adjustable support arm, wherein the main mounting support is hinged to the middle part of the adjustable support arm, and the two auxiliary mounting supports are connected to the two ends of the adjustable support arm; the mounting surfaces of the main mounting support and the two auxiliary mounting supports are arranged facing each other.

[0005] Furthermore, the adjustable support arm includes a connecting arm, a mounting hole for inserting a main mounting support is formed in the middle of the connecting arm, mounting grooves for inserting two auxiliary mounting supports are formed at both ends of the connecting arm, and a connecting component passes through the mounting hole and the mounting groove.

[0006] Furthermore, the connection assembly includes a threaded connection bolt and a connection nut.

[0007] Furthermore, the main mounting support includes a main mounting seat, a main positioning boss is provided on the mounting surface at one end of the mounting seat, a main radial spherical bearing is installed on the other end of the main mounting seat, and is hinged with the connecting bolts through the main radial spherical bearing. The mounting surface of the main mounting seat is fixed to the transmission system of the tilt-rotor aircraft through fasteners.

[0008] Furthermore, the auxiliary mounting support has the same structure as the main mounting support, including an auxiliary mounting support, a mounting surface at one end of the auxiliary mounting support is provided with an auxiliary positioning boss, and the other end of the auxiliary mounting support is installed with an auxiliary radial spherical bearing, which is hinged with the connecting bolts through the auxiliary radial spherical bearing, and the mounting surface of the auxiliary mounting support is fixed to the nacelle structure of the tilt-rotor aircraft through fasteners.

[0009] Furthermore, a shock-absorbing pad is provided on the mounting surface of the mounting seat.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a two-stage universal adjustment mechanism, by adopting a main mounting support, an auxiliary mounting support and an adjustable support arm connected in a hinged manner, when there are manufacturing errors or assembly errors in the structural parts, the position of the mounting support can be fine-tuned to achieve a stress-free assembly effect; the universal adjustment of the shock-absorbing mounting support can be realized, and it can be used in the installation of the transmission system of a tilt-rotor aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the main mounting support structure in the utility model.

[0014] Figure 3 It is a schematic diagram of the adjustable support arm structure in the utility model.

[0015] Figure 4 It is a schematic diagram of the auxiliary mounting support structure in the utility model.

[0016] Figure 5 It is a cross-sectional view of the connection between the main mounting support and the adjustable support arm in the utility model.

[0017] Figure 6 This is a state diagram used in the present utility model.

[0018] Among them, 100 is an adjustable support arm, 101 is a connecting arm, 102 is a mounting hole, 103 is a mounting groove, 104 is a connecting assembly, 104a is a connecting bolt, 104b is a connecting nut, 200 is a main mounting support, 201 is a main mounting seat, 202 is a main positioning boss, 203 is a main radial spherical bearing, 300 is an auxiliary mounting support, 301 is an auxiliary mounting seat, 302 is an auxiliary positioning boss, 303 is an auxiliary radial spherical bearing, 304 is a shock-absorbing pad, 400 is a shock-absorbing mounting support, 500 is a transmission system, and 600 is a nacelle structure. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] like Figure 1-5 An adjustable shock-absorbing mounting support for a tiltrotor aircraft is shown, comprising a main mounting support 200 and two auxiliary mounting supports 300 connected via an adjustable support arm 100, the main mounting support 200 being hinged to the middle of the adjustable support arm 100, and the two auxiliary mounting supports 300 being connected to the two ends of the adjustable support arm 100; the mounting surfaces of the main mounting support 200 and the two auxiliary mounting supports 300 are arranged facing each other.

[0022] Specifically, the adjustable support arm 100 includes a connecting arm 101, a mounting hole 102 for inserting a main mounting support 200 is opened in the middle of the connecting arm 101, mounting grooves 103 for inserting two auxiliary mounting supports 300 are opened at both ends of the connecting arm 101, and a connecting component 104 runs through the mounting hole 102 and the mounting groove 103.

[0023] It should be noted that the mounting hole 102 and the mounting seat are realized by a frame, and the connection portion between the connecting arm 101 and the connecting assembly 104 can be framed to form an arc-shaped structure.

[0024] Furthermore, the connection assembly 104 includes a connection bolt 104a and a connection nut 104b that are threadedly connected.

[0025] Specifically, in the present embodiment, three sets of connection components 104 are used in total. A connection gasket is also sleeved on the connection bolt 104 a. The connection bolt 104 a connects the main mounting support 200 , the auxiliary mounting support 300 and the connection arm 101 together.

[0026] Furthermore, the main mounting support 200 includes a main mounting seat 201, a main positioning boss 202 is provided on the mounting surface at one end of the main mounting seat 201, and a main radial spherical bearing 203 is installed on the other end of the main mounting seat 201, which is hinged with the connecting bolt 104a through the main radial spherical bearing 203, and the mounting surface of the main mounting seat 201 is fixed to the transmission system 500 of the tilt-rotor aircraft through fasteners.

[0027] It should be noted that the mounting surface of the main mounting support 200 is first axially positioned by a circular boss and then fixed to the transmission system 500 by four bolts (fasteners).

[0028] Furthermore, the auxiliary mounting support 300 has the same structure as the main mounting support 200, including an auxiliary mounting support 301, a mounting surface at one end of which is provided with an auxiliary positioning boss 302, and the other end of the auxiliary mounting support 301 is provided with an auxiliary radial spherical bearing 303, which is hinged with the connecting bolt 104a through the auxiliary radial spherical bearing 303, and the mounting surface of the auxiliary mounting support 301 is fixed to the nacelle structure 600 of the tiltrotor aircraft through fasteners.

[0029] Furthermore, a shock-absorbing pad 304 is provided on the mounting surface of the auxiliary mounting seat 301 .

[0030] Specifically, it is also fixed by bolt connection during installation.

[0031] The present embodiment is further described below in conjunction with the working principle.

[0032] like Figure 6 As shown, when assembling this embodiment, the transmission system 500 of the tiltrotor aircraft is fixed to the nacelle structure 600 through various mounting nodes. Since the calculated mounting stiffness is weak, the shock-absorbing mounting support 400 is required to provide auxiliary support to increase the mounting stiffness. Since the remaining mounting nodes have completely fixed the transmission system 500, the installation of the shock-absorbing mounting support 400 at this time is over-constrained with the transmission system 500. When the manufacturing error and the installation error are too large, the installation of the shock-absorbing mounting support 400 will be misaligned. At this time, the shock-absorbing mounting support 400 is required to be adjustable. The shock-absorbing mounting support 400 realizes two-stage universal adjustment through the radial joint bearing connected to the main mounting support 200 and the adjustable support arm 100 and the radial joint shaft connected to the adjustable support arm 100 and the auxiliary mounting support, thereby realizing stress-free assembly of the shock-absorbing mounting support 400.

[0033] The above embodiments are only used to help understand the method and core idea of ​​the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An adjustable shock-absorbing mounting support for a tiltrotor aircraft, characterized in that: The invention comprises a main mounting support (200) and two auxiliary mounting supports (300) connected via an adjustable support arm (100); the main mounting support (200) is hinged to the middle of the adjustable support arm (100), and the two auxiliary mounting supports (300) are connected to both ends of the adjustable support arm (100); and the mounting surfaces of the main mounting support (200) and the two auxiliary mounting supports (300) are arranged facing each other.

2. The adjustable shock-absorbing mounting support for a tiltrotor aircraft according to claim 1, characterized in that: The adjustable support arm (100) comprises a connecting arm (101), a mounting hole (102) for inserting a main mounting support (200) is provided in the middle of the connecting arm (101), mounting grooves (103) for inserting two auxiliary mounting supports (300) are provided at both ends of the connecting arm (101), and a connecting assembly (104) penetrates the mounting hole (102) and the mounting groove (103).

3. The adjustable shock-absorbing mounting support for a tiltrotor aircraft according to claim 2, characterized in that: The connection assembly (104) comprises a threaded connection bolt (104a) and a connection nut (104b).

4. The adjustable shock-absorbing mounting support for a tiltrotor aircraft according to claim 3, characterized in that: The main mounting support (200) comprises a main mounting seat (201), a main positioning boss (202) being provided on a mounting surface at one end of the mounting seat, a main radial spherical bearing (203) being mounted on the other end of the main mounting seat (201), and being hingedly connected to a connecting bolt (104a) via the main radial spherical bearing (203), and a mounting surface of the main mounting seat (201) being fixed to a transmission system (500) of a tiltrotor aircraft via fasteners.

5. The adjustable shock-absorbing mounting support for a tiltrotor aircraft according to claim 3, characterized in that: The auxiliary mounting support (300) has the same structure as the main mounting support (200), and comprises an auxiliary mounting support (301); an auxiliary positioning boss (302) is provided on a mounting surface at one end of the auxiliary mounting support (301); an auxiliary radial spherical bearing (303) is mounted on the other end of the auxiliary mounting support (301), and is hingedly connected to a connecting bolt (104a) via the auxiliary radial spherical bearing (303); and the mounting surface of the auxiliary mounting support (301) is fixed to the nacelle structure (600) of the tiltrotor aircraft via a fastener.

6. The adjustable shock-absorbing mounting support for a tiltrotor aircraft according to claim 5, characterized in that: A shock-absorbing pad (304) is also provided on the mounting surface of the mounting seat.

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