Cross shaft connecting structure of servo actuating system

Abstract

The utility model relates to the technical field of servo actuation systems, in particular to a cross shaft connecting structure of a servo actuation system, which comprises a first shaft, a second shaft, a first connecting seat and a second connecting seat, the first shaft and the second shaft form a cross shaft, and the first shaft is rotationally connected with the second shaft; the first shaft is rotationally mounted on the first connecting seat; and the second shaft is rotationally mounted on the second connecting seat. The loading requirements of high-speed and large-pressure extreme working conditions can be met, and the service life is long.

Description

Technical Field

[0001] The present disclosure relates to the technical field of servo actuation systems, and in particular to a cross-axis connection structure of a servo actuation system. Background Art

[0002] When conducting load characteristic research on the servo actuator system, it is necessary to use a loading cylinder to simulate the aerodynamic load on the rudder or aileron. Specifically, the actuator cylinder of the rudder or wing receives the command of the control system to drive the rudder or wing to rotate. At the same time, the loading cylinder receives the command of the control system to follow the movement of the rudder or wing, and outputs the aerodynamic load on the rudder during the rotation. When conducting simulation tests, the freedom of movement of the free end of the loading cylinder must be guaranteed to make the following process smooth and prevent the loading cylinder from getting stuck. Therefore, it is necessary to design a connection structure between the free end of the loading cylinder and the rudder. The existing connection structure is a spherical bearing structure. Under extreme conditions of high speed and high pressure, the spherical bearing structure has a short life and cannot meet the loading force requirements. Summary of the invention

[0003] The present disclosure is proposed in view of the above problems. The present disclosure provides a cross-axis connection structure of a servo actuation system.

[0004] According to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system is provided, which includes a first axis, a second axis, a first connecting seat and a second connecting seat; the first axis and the second axis constitute a cross axis, and the first axis and the second axis are rotatably connected; the first axis is rotatably mounted on the first connecting seat; the second axis is rotatably mounted on the second connecting seat.

[0005] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system also includes: the first axis includes two connecting columns and a connecting block; the two connecting columns are symmetrically fixedly installed on two opposite sides of the connecting block; the two connecting columns are rotatably connected to the first connecting seat respectively; a mounting through hole is opened in the middle of the connecting block, and the center line of the mounting through hole is perpendicular to the axis of the connecting column; a first bushing is installed in the mounting through hole; the second axis passes through the first bushing and is rotatably connected to the connecting block through the first bushing.

[0006] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system also includes: the first connecting seat includes two first mounting plates and two first connecting ears; the two first mounting plates are located in the same plane, and the two first connecting ears are respectively fixedly mounted on the two first mounting plates; the first axis is rotatably mounted between the two first connecting ears.

[0007] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system also includes: the first connecting ear includes a connecting arm and an ear hole; the connecting arm is an arc-shaped arm, and one end of the connecting arm is fixedly connected to the first mounting plate; the ear hole is arranged at one end of the connecting arm away from the first mounting plate; the end of the connecting column away from the connecting block is rotatably installed in the ear hole of the first connecting ear on the corresponding side.

[0008] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system further includes: the second connecting seat includes a second connecting plate and two second connecting ears; the second connecting ears are fixedly mounted on the second connecting plate; and the second shaft is rotationally connected between the two second connecting ears.

[0009] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system further includes: the connection column is connected to the first connection ear through a second sleeve, a first anti-loosening nut is installed on the connection column, the first anti-loosening nut is located on a side of the first connection ear away from the connection block, and the first anti-loosening nut is threadedly connected to the connection column;

[0010] The second shaft is connected to the second connecting ear via a third shaft sleeve, and both ends of the second shaft are respectively threadedly connected with second anti-loosening nuts.

[0011] In addition, a cross-axis connection structure of a servo actuator system according to one aspect of the present disclosure further includes: two first thrust washers are also provided on the connecting column, and the two first thrust washers are respectively located at two ends of the second sleeve.

[0012] In addition, a cross-axis connection structure of a servo actuator system according to one aspect of the present disclosure further includes: two second thrust washers are sleeved on the second shaft, and the two second thrust washers are respectively located at two ends of the first shaft sleeve.

[0013] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system further includes: two third thrust washers are also installed on the second shaft, the two third thrust washers are respectively located on both sides of the third sleeve, and the second anti-loosening nut is located on the side of the second connecting ear away from the connecting block.

[0014] In addition, according to one aspect of the present disclosure, a cross-axis connection structure of a servo actuator system also includes: a plurality of first mounting holes are opened on the first connecting seat, and the first connecting seat is connected to the rudder surface by bolts passing through the first mounting holes; a plurality of second mounting holes are opened on the second connecting seat, and the second connecting seat is connected to the free end of the loading cylinder by bolts passing through the second mounting holes.

[0015] The present invention can ensure the freedom of movement of the free end of the loading cylinder, make its following process smooth, prevent the loading cylinder from getting stuck, and at the same time meet the loading force requirements under extreme working conditions of high speed and high pressure, and have a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present disclosure will become more apparent by describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 It is a structural schematic diagram of a cross-axis connection structure of a servo actuation system proposed in the present disclosure;

[0018] Figure 2 yes Figure 1 A cross-sectional view of

[0019] Figure 3 It is a schematic diagram of the installation structure of the first shaft and the second shaft, the first thrust washer, and the first anti-loosening nut;

[0020] Figure 4 is a schematic diagram of the installation structure of the first shaft and the first shaft sleeve;

[0021] Figure 5 yes Figure 1 Top view of the .

[0022] Description of reference numerals:

[0023] 1-first shaft, 2-second shaft, 3-first connecting seat, 4-second connecting seat, 101-connecting column, 102-connecting block, 1021-mounting through hole, 5-first sleeve, 31-first mounting plate, 32-first connecting ear, 6-second sleeve, 7-first anti-loosening nut, 8-first thrust washer, 9-second thrust washer, 10-second connecting plate, 11-second connecting ear, 12-second anti-loosening nut, 13-third sleeve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present disclosure more obvious, the exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the exemplary embodiments described here.

[0025] Embodiments of the present disclosure: Figure 1-Figure 5As shown, the present disclosure proposes a cross-axis connection structure of a servo actuator system, which includes a first axis 1, a second axis 2, a first connecting seat 3 and a second connecting seat 4; the first axis 1 and the second axis 2 form a cross axis, and the first axis 1 and the second axis 2 are rotationally connected; the first axis 1 is rotationally installed on the first connecting seat 3; the second axis 2 is rotationally installed on the second connecting seat 4, so that rotational freedom in two directions can be provided to meet the requirements of the hinge point freedom.

[0026] The first shaft 1 includes two connecting columns 101 and a connecting block 102; the two connecting columns 101 are symmetrically fixedly installed on opposite sides of the connecting block 102. As an implementation method, the connecting columns 101 and the connecting block 102 are integrally formed, the connecting block 102 is a rectangular block, and the connecting column 101 is a cylindrical column. The length and width of the connecting block 102 are greater than the diameter of the connecting column 101. The two connecting columns 101 are rotatably connected to the first connecting seat 3 respectively; a mounting through hole 1021 is opened in the middle of the connecting block 102, where the middle refers to the geometric center of the connecting block 102, and the center line of the mounting through hole 1021 is perpendicular to the axis of the connecting column 101; a first shaft sleeve 5 is installed in the mounting through hole 1021; the second shaft 2 passes through the first shaft sleeve 5, and is rotatably connected to the connecting block 102 through the first shaft sleeve 5.

[0027] The first connecting seat 3 is provided with a plurality of first mounting holes, and the first connecting seat 3 is connected to the rudder surface by bolts passing through the first mounting holes; the second connecting seat 4 is provided with a plurality of second mounting holes, and the second connecting seat 4 is connected to the free end of the loading cylinder by bolts passing through the second mounting holes.

[0028] As an implementation method, the first connection seat 3 includes two first mounting plates 31 and two first connecting ears 32; the two first mounting plates 31 are located in the same plane, and the two first connecting ears 32 are fixedly mounted on the two first mounting plates 31 respectively; the first shaft 1 is rotatably mounted between the two first connecting ears 32. Four first mounting holes are opened on the first mounting plate 31, and the first connection seat 3 is connected to the rudder surface by bolts passing through the first mounting holes.

[0029] Furthermore, the first connecting ear 32 includes a connecting arm and an ear hole; the connecting arm is an arc-shaped arm, one end of which is fixedly connected to the first mounting plate 31; the ear hole is arranged at the end of the connecting arm away from the first mounting plate 31; the end of the connecting column 101 away from the connecting block 102 is rotatably mounted in the ear hole of the first connecting ear 32 on the corresponding side. Such an arrangement can effectively reduce the interference of the first mounting plate 31 on the second shaft 2 when the first shaft 1 rotates.

[0030] The second connection seat 4 includes a second connection plate 10 and two second connection ears 11; the second connection ears 11 are fixedly mounted on the second connection plate 10; the second shaft 2 is rotatably connected between the two second connection ears 11. The second connection plate 10 is a circular plate, the second connection ears 11 are fixedly connected to the second connection plate 10 by welding, and the second connection plate 10 is provided with a plurality of second mounting holes along the circumferential direction, 6 of which are taken as an example here, and the second connection seat 4 is connected to the free end of the loading cylinder by bolts passing through the second mounting holes.

[0031] Further, the connecting column 101 is connected to the first connecting ear 32 through the second sleeve 6, and a first locking nut 7 is installed on the connecting column 101. The first locking nut 7 is located on the side of the first connecting ear 32 away from the connecting block 102, and the first locking nut 7 is threadedly connected to the connecting column 101;

[0032] The second shaft 2 is connected to the second connecting ear 11 via a third shaft sleeve 13 , and both ends of the second shaft 2 are respectively threadedly connected with second anti-loosening nuts 12 .

[0033] The second shaft 2 is connected to the first shaft 1 through the first sleeve 5, the first shaft 1 is rotatably connected to the first connecting ear 32 through the second sleeve 6, and the second shaft 2 is rotatably connected to the second connecting ear 11 through the third sleeve 13. By adjusting the width of the sleeve, the contact area can be increased to meet the loading requirements of a larger loading force. At the same time, without increasing the linear velocity of the bearing, the bearing specific pressure can be greatly reduced due to the increase in the contact area, thereby reducing the bearing pv value and increasing the service life.

[0034] Two first thrust washers 8 are also provided on the connecting column 101 , and the two first thrust washers 8 are respectively located at two ends of the second shaft sleeve 6 .

[0035] Two second thrust washers 9 are sleeved on the second shaft 2 , and the two second thrust washers 9 are respectively located at two ends of the first shaft sleeve 5 .

[0036] Two third thrust washers are also installed on the second shaft 2 . The two third thrust washers are respectively located on both sides of the third shaft sleeve 13 . The second anti-loosening nut 12 is located on the side of the second connecting ear 11 away from the connecting block 102 .

[0037] By arranging two first thrust washers 8 at both ends of the second sleeve 6, two second thrust washers 9 at both ends of the first sleeve 5, and two third thrust washers at both sides of the third sleeve 13, the sleeve can be effectively prevented from axial displacement and from slipping out and rubbing against other components.

[0038] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0039] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including," "comprising," "having," and the like are open words, referring to "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or," and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0040] Additionally, as used herein, "or" used in a list of items beginning with "at least one" indicates a separate list, so that, for example, a list of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the example described is preferred or better than other examples.

[0041] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0042] Various changes, substitutions, and modifications of the techniques described herein may be made without departing from the teachings defined by the appended claims. Furthermore, the scope of the claims of the present disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of events, means, methods, and actions described above. Currently existing or later to be developed processes, machines, manufactures, compositions of events, means, methods, or actions that perform substantially the same functions or achieve substantially the same results as the corresponding aspects described herein may be utilized. Thus, the appended claims include such processes, machines, manufactures, compositions of events, means, methods, or actions within their scope.

[0043] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0044] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A cross-axis connection structure of a servo actuator system, characterized in that: The invention comprises a first shaft (1), a second shaft (2), a first connecting seat (3) and a second connecting seat (4); the first shaft (1) and the second shaft (2) form a cross shaft, and the first shaft (1) and the second shaft (2) are rotatably connected; the first shaft (1) is rotatably mounted on the first connecting seat (3); and the second shaft (2) is rotatably mounted on the second connecting seat (4); The first shaft (1) comprises two connecting columns (101) and a connecting block (102); the two connecting columns (101) are symmetrically fixedly mounted on two opposite sides of the connecting block (102); the two connecting columns (101) are rotatably connected to the first connecting seat (3) respectively; a mounting through hole (1021) is provided in the middle of the connecting block (102), and the center line of the mounting through hole (1021) is perpendicular to the axis of the connecting column (101); a first shaft sleeve (5) is mounted in the mounting through hole (1021); the second shaft (2) passes through the first shaft sleeve (5) and is rotatably connected to the connecting block (102) via the first shaft sleeve (5); The first connecting seat (3) comprises two first mounting plates (31) and two first connecting ears (32); the two first mounting plates (31) are located in the same plane, and the two first connecting ears (32) are respectively fixedly mounted on the two first mounting plates (31); and the first shaft (1) is rotatably mounted between the two first connecting ears (32).

2. The cross-axis connection structure of the servo actuator system according to claim 1, characterized in that: The first connecting ear (32) comprises a connecting arm and an ear hole; the connecting arm is an arc-shaped arm, one end of which is fixedly connected to the first mounting plate (31); the ear hole is arranged at an end of the connecting arm away from the first mounting plate (31); and an end of the connecting column (101) away from the connecting block (102) is rotatably mounted in the ear hole of the first connecting ear (32) on the corresponding side.

3. The cross-axis connection structure of the servo actuator system according to claim 1, characterized in that: The second connecting seat (4) comprises a second connecting plate (10) and two second connecting ears (11); the second connecting ears (11) are fixedly mounted on the second connecting plate (10); and the second shaft (2) is rotatably connected between the two second connecting ears (11).

4. The cross-axis connection structure of the servo actuator system as claimed in claim 3, characterized in that: The connecting column (101) is connected to the first connecting ear (32) via a second shaft sleeve (6); a first locking nut (7) is installed on the connecting column (101); the first locking nut (7) is located on a side of the first connecting ear (32) away from the connecting block (102); and the first locking nut (7) is threadedly connected to the connecting column (101); The second shaft (2) and the second connecting ear (11) are connected via a third shaft sleeve (13), and second anti-loosening nuts (12) are respectively threadedly connected at both ends of the second shaft (2).

5. The cross-axis connection structure of the servo actuator system as claimed in claim 4, characterized in that: Two first thrust washers (8) are also provided on the connecting column (101), and the two first thrust washers (8) are respectively located at two ends of the second shaft sleeve (6).

6. The cross-axis connection structure of the servo actuator system as claimed in claim 3, characterized in that: Two second thrust washers (9) are sleeved on the second shaft (2), and the two second thrust washers (9) are respectively located at two ends of the first shaft sleeve (5).

7. The cross-axis connection structure of the servo actuator system according to claim 4, characterized in that: Two third thrust washers are also installed on the second shaft (2), and the two third thrust washers are respectively located on both sides of the third shaft sleeve (13), and the second anti-loosening nut (12) is located on the side of the second connecting ear (11) away from the connecting block (102).

8. The cross-axis connection structure of the servo actuator system according to any one of claims 1 to 7, characterized in that: The first connecting seat (3) is provided with a plurality of first mounting holes, and the first connecting seat (3) is connected to the rudder surface by bolts passing through the first mounting holes; the second connecting seat (4) is provided with a plurality of second mounting holes, and the second connecting seat (4) is connected to the free end of the loading cylinder by bolts passing through the second mounting holes.

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