CN-121990153-A - Friction piece device for inhibiting unfavorable vibration of rudder

CN121990153ACN 121990153 ACN121990153 ACN 121990153ACN-121990153-A

Abstract

The invention relates to a friction piece device for inhibiting unfavorable vibration of a rudder, which solves the problems of high design and manufacturing cost and high use and maintenance cost of the existing method. The upper rotating part comprises a rotating support fixing ring (2), a rotating support (3) and a metal friction head (4), one end of the rotating support (3) is fixedly connected with a rudder rotating shaft through the rotating support fixing ring (2), the other end of the rotating support (3) is fixedly connected with the metal friction head (4), the lower fixing base comprises a friction plate (5), a friction plate cover plate (6), a sliding block (7), a fixing base sliding rail (8) and a fixing base mounting ring (9), the fixing base sliding rail (8) is fixedly connected with a rudder shaft seat through the fixing base mounting ring (9), the sliding block (7) is slidably mounted on the fixing base sliding rail (8), the friction plate (5) is fixedly mounted at the front end of the sliding block (7) through the friction plate cover plate (6) and is in contact with the metal friction head (4), the sliding block (7) and the fixing base sliding rail (8) is fixedly connected with the fixing base mounting ring (9) through long screws, and the relative positions of the sliding block (7) and the fixing base sliding rail (8) are adjustable. The invention can restrain the unfavorable oscillation vibration generated by the rudder and reduce the use and maintenance cost.

Inventors

JI JIAYAN
LV ZHIBIN
YANG LUO
LIU CHANGYU
ZHAO HONGFEI

Assignees

北京北方长鹰无人机科技有限公司

Dates

Publication Date: 20260508
Application Date: 20251228

Claims (5)

1. A friction piece device for inhibiting unfavorable vibration of a rudder is characterized by comprising an upper rotating part, a lower fixed base and a half-wrapping fixed piece, wherein the upper rotating part comprises a rotating support fixing ring (2), a rotating support (3) and a metal friction head (4), one end of the rotating support (3) is fixedly connected with a rudder rotating shaft through the rotating support fixing ring (2), the other end of the rotating support is fixedly connected with the metal friction head (4), the lower fixed base comprises a friction plate (5), a friction plate cover plate (6), a sliding block (7), a fixed base sliding rail (8) and a fixed base mounting ring (9), the fixed base sliding rail (8) is fixedly connected with a rudder shaft seat through the fixed base mounting ring (9), the sliding block (7) is slidably mounted on the fixed base sliding rail (8), the friction plate (5) is fixedly mounted at the front end of the sliding block (7) through the friction plate cover plate (6) and is in contact with the metal friction head (4), the sliding block (7) is connected with the fixed base mounting ring (9) through a long screw, and the relative positions of the sliding block (7) and the fixed base sliding rail (8) are adjustable.
2. A friction member device for suppressing adverse vibration of a rudder according to claim 1, wherein the fixed base mounting ring (9) and the fixed base rail (8) are provided with mounting lugs through which bolts pass to fasten them.
3. A friction member device for suppressing adverse vibration of a rudder according to claim 2, wherein the fixing base mounting ring (9) and the fixing base slide rail (8) are further provided with holes for the long screws to pass through, and the long screws pass through the holes in the mounting lugs and the holes in the slider (7) to connect the fixing base mounting ring (9), the fixing base slide rail (8) and the slider (7).
4. The friction piece device for inhibiting adverse vibration of a rudder according to claim 1, wherein the sliding block (7) is an L-shaped plate, a bottom plate of the L-shaped plate is matched with the fixed base sliding rail (8), two lateral threaded hole through holes are formed in the bottom plate, two long round holes are respectively formed in two sides of the fixed base sliding rail (8) and matched with the lateral threaded hole through holes of the bottom plate of the L-shaped plate, so that screw connection fixation is realized, and position adjustment of the sliding block (7) is facilitated.
5. A friction member device for suppressing adverse vibration of a rudder according to claim 1, wherein a half-pack fixing member (1) for preventing loosening is further connected between the upper rotating member and the rudder shaft.

Description

Friction piece device for inhibiting unfavorable vibration of rudder Technical Field The present invention relates to a rudder structure, and more particularly, to a friction member device for suppressing adverse vibration of a rudder. Background In order to solve the problem of adverse oscillation vibration generated by a rudder (such as limit cycle oscillation, which is a typical self-excited vibration and is a complex and important problem in nonlinear autonomous system theory, the problem is represented by constant amplitude and constant period vibration), a rudder system clearance is generally controlled to be in a smaller range, such as a certain fighter plane, and the rudder system clearance is controlled to be within 0.5 degrees. The method has the main defects that 1, the clearance of a control rudder system can put higher requirements on the whole rudder system structure and related equipment (such as a steering engine), the design and manufacturing cost is higher, 2, the clearance of the rudder system can be increased along with the use of a rudder, the possibility of generating unfavorable oscillation vibration of the rudder is increased, the use and maintenance cost is high, and the method is inconvenient. Disclosure of Invention The invention aims to reduce the cost of the related structure and equipment design and manufacture of a rudder system, and can also restrain the adverse oscillation vibration generated by a rudder when the clearance of the rudder system is large (such as more than 0.5 degrees), and simultaneously reduce the use and maintenance cost. The invention is realized by the following technical scheme: a friction piece device for inhibiting adverse vibration of a rudder comprises an upper rotating part, a lower fixed base and a half-package fixed piece; The upper rotating part comprises a rotating support fixing ring 2, a rotating support 3 and a metal friction head 4, wherein one end of the rotating support 3 is fixedly connected with a rudder rotating shaft through the rotating support fixing ring 2, and the other end of the rotating support 3 is fixedly connected with the metal friction head 4; The lower fixed base comprises a friction plate 5, a friction plate cover plate 6, a sliding block 7, a fixed base sliding rail 8 and a fixed base mounting ring 9, wherein the fixed base sliding rail 8 is fixedly connected with a rudder shaft seat through the fixed base mounting ring 9, the sliding block 7 is slidably mounted on the fixed base sliding rail 8, the friction plate 5 is fixedly mounted at the front end of the sliding block 7 through the friction plate cover plate 6 and is contacted with the metal friction head 4, the sliding block 7 is connected with the fixed base mounting ring 9 of the fixed base sliding rail 8 through a long screw, and the relative position of the sliding block 7 and the fixed base mounting ring 9 is adjustable. Further, the fixed base mounting ring 9 and the fixed base slide rail 8 are provided with mounting lugs, and bolts penetrate through the mounting lugs to fixedly connect the two. Furthermore, holes for the long screws to pass through are also formed in the mounting lugs of the mounting rings 9 and the sliding rails 8 of the fixed base, and the long screws pass through the holes in the mounting lugs and the holes in the sliding blocks 7 to connect the mounting rings 9, the sliding rails 8 of the fixed base and the sliding blocks 7 of the fixed base. Further, the slider 7 is L-shaped board, and the bottom plate and the fixed base slide rail 8 cooperation of L-shaped board are opened there are two side direction screw hole through-holes on the bottom plate, and the both sides have two slotted holes respectively on the fixed base slide rail 8, cooperate with the side direction screw hole through-hole of L-shaped board bottom plate, realize the spiro union fixed and help realizing the position adjustment of slider 7. Further, a half-bag fixing piece 1 with a locking function is also connected between the upper rotating part and the rudder shaft. The invention has the beneficial effects that: 1. the principle is simple, the installation is relatively easy, and the influence on the whole machine body is very small. The total weight of the friction piece is less than 500g, and the friction piece is arranged in the fairing at the lower part of the vertical tail, so that the aerodynamic performance of the aircraft is not affected, and the influence on the flight performance of the aircraft only slightly appears to increase the weight of the aircraft. Therefore, has little effect on the flight performance of the aircraft. 2. The design and manufacturing cost of the structure and equipment generated for controlling the clearance of the rudder system is greatly reduced, the manufacturing cost of one set of rudder friction pieces is less than twenty thousands, and the cost can be hundreds of thousands to millions by using a high-precision steering engine or