A position adjustment and locking device for a rocker arm of an aircraft control system

Abstract

The present invention provides a position adjustment and locking device for a rocker arm used in an aircraft control system, comprising: a square hole sleeve (2) and two sets of adjusting screw assemblies; the cross-section of the square hole sleeve (2) is in the shape of a racket, and the first end is sleeved on the square shaft (1) of the aircraft control system; the first end of the rocker arm (6) of the aircraft control system is provided with a clamping groove, and the second end is connected to the driving rod of the rocker arm (6); the first end of the clamping groove is cylindrical for clamping the outer circle of the first end of the square hole sleeve (2), and the second end of the clamping groove is flat-columnar and has a size larger than the size of the second end of the square hole sleeve (2); the first end of the rocker arm (6) of the aircraft control system is further provided with two screw holes, which are respectively located on both sides of the second end of the clamping groove, and the two sets of adjusting screw assemblies respectively pass through the two screw holes for adjusting and locking the position of the square hole sleeve (2) relative to the rocker arm (6) so that the stroke of the rocker arm (6) meets the design requirements.

Description

Technical Field

[0001] The invention belongs to the field of mechanical structures, and in particular relates to a position regulating and locking device for a rocker arm of an aircraft control system. Background Art

[0002] Aircraft control systems usually use rocker arms to drive movement. For example, a square hole is provided at one end of the rocker arm, which is clamped with a square shaft of the aircraft control system to achieve linkage. The middle position of the rocker arm is determined according to the requirements of the aircraft control system.

[0003] However, manufacturing errors of the rocker arm, the rocker arm drive rod, and the square shaft may affect the middle position of the square shaft of the rear control system after the rocker arm is connected and installed with the rocker arm drive rod. Summary of the invention

[0004] The invention provides a position regulating and locking device for a rocker arm of an aircraft control system, which solves the problem of adjusting the installation position of the control system.

[0005] The present invention provides a position adjustment and locking device for a rocker arm of an aircraft control system, comprising: a square hole sleeve 2 and two sets of adjustment screw assemblies; wherein:

[0006] The cross section of the square hole sleeve 2 is in the shape of a racket, the first end is in the shape of a barrel with a round outer surface and a square inner surface, and the second end is in the shape of a flat column; the first end of the square hole sleeve 2 is sleeved on the square shaft 1 of the aircraft control system;

[0007] The first end of the rocker arm 6 of the aircraft control system is provided with a slot, and the second end is connected to the driving rod of the rocker arm 6; the first end of the slot is cylindrical and is used to clamp the outer circle of the first end of the square hole sleeve 2, and the second end of the slot is flat and cylindrical and has a size larger than that of the second end of the square hole sleeve 2;

[0008] The first end of the rocker arm 6 of the aircraft control system is also provided with two screw holes, which are respectively located on both sides of the second end of the slot. The two sets of adjusting screw assemblies are respectively penetrated by the two screw holes, which are used to adjust and lock the position of the square hole sleeve 2 relative to the rocker arm 6 so that the stroke of the rocker arm 6 meets the design requirements.

[0009] Optionally, the outer diameter of the first end of the square hole sleeve 2 is consistent with the inner diameter of the first end of the slot.

[0010] Optionally, the size of the square inner hole of the first end of the square hole sleeve 2 is consistent with the outer size of the square shaft 1 .

[0011] Optionally, the width of the second end of the slot is 1.1-1.5 times the width of the second end of the square hole sleeve 2.

[0012] Optionally, the length of the slot is greater than the length of the second end of the square hole sleeve 2 .

[0013] Optionally, the two sets of adjusting screw assemblies include a first adjusting screw assembly and a second adjusting screw assembly;

[0014] The first adjusting screw assembly comprises: a first nut 3 and a first adjusting screw 4;

[0015] The second adjusting screw assembly comprises: a second adjusting screw 7 and a second nut 8;

[0016] The first adjusting screw 4 and the second adjusting screw 7 are respectively passed through the two screw holes and pressed against the second end of the square hole sleeve 2;

[0017] The first nut 3 is sleeved on the first adjusting screw 4 and is close to the outer side of the first end of the rocker arm 6;

[0018] The second nut 8 is sleeved on the second adjusting screw 7 and is close to the outer side of the first end of the rocker arm 6 .

[0019] Optionally, the first adjusting screw assembly and / or the second adjusting screw assembly further includes: a locking wire 5;

[0020] A locking wire installation hole is also provided near the screw hole, and a locking wire passing hole is provided on the first nut 3 and / or the second nut 8;

[0021] The locking wire 5 is arranged through the locking wire passing hole and the locking wire installation hole, and is used to lock the first nut 3 and / or the second nut 8.

[0022] Optionally, the tails of the first adjusting screw 4 and the second adjusting screw 7 are spherical.

[0023] The present invention provides a position adjustment and locking device for a rocker arm of an aircraft control system. A square hole sleeve is added between a square shaft and a rocker arm, and the threaded engagement relationship of two sets of adjusting screws is used to adjust the installation angular position of the square hole sleeve relative to the rocker arm, and then the square hole sleeve is locked with a nut and a locking wire after adjustment. The present invention can adjust the angular position of the square hole sleeve relative to the rocker arm by simply rotating the adjusting screw, and can achieve stepless adjustment of the angular position of the rocker arm. The structure is simple, reliable, and easy to operate. By adjusting the angular position of the square hole sleeve relative to the rocker arm, the manufacturing errors of the rocker arm, the rocker arm drive rod, and the square shaft are compensated, and the middle position of the square shaft of the control system is ensured after the rocker arm is connected and installed with the rocker arm drive rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic diagram of the structure of a position adjustment and locking device for a rocker arm of an aircraft control system provided by the present invention;

[0026] Description of reference numerals:

[0027] 1—square shaft;

[0028] 2-Square hole sleeve;

[0029] 3—first nut;

[0030] 4 - first adjusting screw;

[0031] 5-locking wire;

[0032] 6- rocker arm;

[0033] 7 - second adjusting screw;

[0034] 8 - Second nut. DETAILED DESCRIPTION

[0035] The position adjustment and locking device of the rocker arm for the aircraft control system provided by the present invention is described in detail below in conjunction with the accompanying drawings.

[0036] Figure 1 The schematic diagram of the structure of the position adjustment and locking device of the rocker arm for the aircraft control system provided by the present invention is as follows: Figure 1 As shown, the position adjustment and locking device of the rocker arm for the aircraft control system provided by the present invention comprises: a square hole sleeve 2, a first adjustment screw 4, a second adjustment screw 7, a first nut 3, a second nut 8 and a locking wire 5, etc.

[0037] Among them, the square hole sleeve 2 is connected to the square shaft 1, the outer surface of the square hole sleeve 2 is a circle as a whole, and there is a convex structure on the circle, and there is a circular hole and a long strip groove on the rocker arm 6. There is a threaded hole on both sides of the long strip groove for threaded connection with the first adjustment screw 4 and the second adjustment screw 7 respectively. There are small holes for locking wires near the threaded holes, and there are small holes for locking wires on the first nut 3 and the second nut 8. During installation, the position of the rocker arm 6 is adjusted by screwing the first adjustment screw 4 and the second adjustment screw 7. After the adjustment is completed, the first nut 3 and the second nut 8 are used to lock, and finally the first nut and the second nut are secured with a locking wire 5.

[0038] For example, the square hole sleeve 2 is pressed into the square shaft 1 and fixed, the rocker arm 6 is matched with the outer circle of the square hole sleeve 2 through the circular hole and the raised part of the square hole sleeve 2 is located in the area of ​​the long strip groove of the rocker arm 6, the first adjusting screw 4 is connected to the rocker arm 6 by threads and is pressed against one side of the raised part of the outer circle of the square hole sleeve 2, the second adjusting screw 7 is connected to the rocker arm 6 by threads and is pressed against the other side of the raised part of the outer circle of the square hole sleeve 2, the position of the rocker arm is adjusted by tightening the first adjusting screw 4 and the second adjusting screw 7, and then the first nut 3 and the second nut 8 are tightened to complete the adjustment, and finally the first nut 3, the second nut 8 and the rocker arm 5 are locked with a locking wire 5. Finally, the position adjustment and locking of the rocker arm 5 are achieved.

Claims

1. A position adjustment and locking device for a rocker arm of an aircraft control system, characterized in that, it includes: a square-hole sleeve (2) and two sets of adjusting screw assemblies; wherein, the cross-section of the square-hole sleeve (2) is in the shape of a racket, the first end is a barrel shape with an outer circle and an inner square, and the second end is a flat column shape; the first end of the square-hole sleeve (2) is sleeved on the square shaft (1) of the aircraft control system; a first end of the rocker arm (6) of the aircraft control system is provided with a card slot, and the second end is connected to the driving rod of the rocker arm (6); the first end of the card slot is cylindrical and is used for clamping the outer circle of the first end of the square-hole sleeve (2), and the second end of the card slot is a flat column shape and its size is larger than the size of the second end of the square-hole sleeve (2); the first end of the rocker arm (6) of the aircraft control system is further provided with two screw holes, which are respectively located on both sides of the second end of the card slot, and the two sets of adjusting screw assemblies respectively pass through the two screw holes to adjust and lock the position of the square-hole sleeve (2) relative to the rocker arm (6) so that the stroke of the rocker arm (6) meets the design requirements.

2. The device according to claim 1, characterized in that, the outer diameter of the first end of the square-hole sleeve (2) is consistent with the inner diameter of the first end of the card slot.

3. The device according to claim 1, characterized in that, the size of the square inner hole of the first end of the square-hole sleeve (2) is consistent with the outer shape size of the square shaft (1).

4. The device according to claim 1, characterized in that, the width of the second end of the card slot is 1.1 - 1.5 times the width of the second end of the square-hole sleeve (2).

5. The device according to claim 1, characterized in that, the length of the card slot is greater than the length of the second end of the square-hole sleeve (2).

6. The device according to claim 1, characterized in that, the two sets of adjusting screw assemblies include a first adjusting screw assembly and a second adjusting screw assembly; the first adjusting screw assembly includes: a first nut (3) and a first adjusting screw (4); the second adjusting screw assembly includes: a second adjusting screw (7) and a second nut (8); the first adjusting screw (4) and the second adjusting screw (7) respectively pass through the two screw holes and press against the second end of the square-hole sleeve (2); the first nut (3) is sleeved on the first adjusting screw (4) and is close to the outer side of the first end of the rocker arm (6); the second nut (8) is sleeved on the second adjusting screw (7) and is close to the outer side of the first end of the rocker arm (6).

7. The device according to claim 6, characterized in that, the first adjusting screw assembly and / or the second adjusting screw assembly further includes: a locking wire (5); a locking wire installation hole is further provided near the screw hole, and a locking wire passing hole is provided on the first nut (3) and / or the second nut (8); the locking wire (5) passes through the locking wire passing hole and the locking wire installation hole to lock the first nut (3) and / or the second nut (8).

8. The device according to claim 6, characterized in that, the tails of the first adjusting screw (4) and the second adjusting screw (7) are spherical surfaces.

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