Two-way composite protection gyroscope shock absorber

Abstract

The invention belongs to the technical field of inertia, and particularly relates to a bidirectional composite protection gyroscope damper which comprises a fixing frame (3-1), a rubber damping ferrule (3-2), a rubber damping pad (3-3), a mounting seat (3-4) and mounting screws (3-5). After the shock absorber is mounted, the gyroscope and the mounting seat (3-4) are completely and flexibly connected, and the influence of strong impact and vibration on the working performance of the gyroscope during missile launching and working is effectively improved. According to the shock absorber, the gyroscope universal support is located at the centroid position, the center position and the rotation center position of the gyroscope, the three-center-in-one effect is achieved, the working performance of the gyroscope can be better exerted, and the aim of accurately measuring the posture of a projectile body is achieved.

Description

Technical Field

[0001] The invention belongs to the field of inertial technology, and in particular relates to a bidirectional composite protection gyroscope shock absorber, which can improve the anti-vibration and impact capability of the gyroscope in the X-axis, Y-axis and Z-axis directions. Background Art

[0002] A gyroscope is a device that uses the principle of high-speed rotating body's fixed axis to detect the angular motion of the sensitive housing relative to the inertial space around one or two axes orthogonal to the rotation axis. Angular motion detection devices made using other principles and having the same function are also called gyroscopes.

[0003] The function of the pneumatic gyroscope is to make the inner and outer frames in the universal bracket relatively still in the inertial space based on the spatial axis fixation of the high-speed rotor, and use the angle sensor to output the mechanical angle change of the shell relative to the inner and outer frames as an electrical signal, so as to measure the attitude angle change of the missile body relative to the inertial space. For tactical tilt-stabilized missiles, the pneumatic gyroscope is the core sensor for accurately measuring its tilt, yaw and pitch angles.

[0004] The working principle of the pneumatic gyroscope is that before the missile is launched, the gyroscope electric detonator is ignited, the propellant is ignited to generate gas, the gas is ejected through the nozzle at high speed, blowing the crescent rotor to rotate at high speed. When the rotor speed reaches the required working speed, the gas in the generator is exhausted, the nozzle withdraws from the inner and outer frames under the action of the spring, and the gyroscope is unlocked and is in working condition.

[0005] The pneumatic gyroscope is composed of a housing 1-1, a universal bracket 1-2, a sensor 1-3 and a gas generator 1-4. The housing 1-1 plays a supporting role and can be installed on the projectile; the universal bracket 1-2 uses the fixed axis of the high-speed rotor to keep the inner and outer frames relatively still in the inertial space to produce a gyro effect; the sensor 1-3 is fixedly connected to the inner and outer frames to convert the mechanical angle of the gyroscope into an electrical signal output; the gas generator 1-4 produces high-temperature and high-pressure gas, which is the power part that drives the rotor to rotate at high speed.

[0006] In order to make the gyroscope adapt to the missile launch and working environment and work properly, the gyroscope needs to be installed on the missile body through a shock absorber. The shock absorber is used to change the vibration and impact force transmitted to the gyroscope by the external environment, so that the working performance of the gyroscope is not affected by the external environment. It is a key component to ensure the normal operation of the gyroscope.

[0007] The structure of pneumatic gyro shock absorber is as follows: Figure 2As shown. The shock absorber consists of three parts: a rubber shock absorber pad 2-1, a mounting seat 2-2 and a mounting screw 2-3. The rubber shock absorber pad 2-1 is installed at the bottom of the gyro gas generator 1-4 and fits the shape of the bottom of the generator; one end of the mounting seat 2-2 is connected to the missile compartment, and the other end is connected to the gyroscope and the rubber shock absorber pad 2-1 through two mounting screws 2-3. The above-mentioned gyroscope shock absorber design method is a traditional gyroscope installation method, which has continued to this day. However, in the use environment of a certain type of missile, the performance of the shock absorber is poor and the protection effect on the gyroscope is poor. First, the strong impact during missile launch can reach 230g, and the gyroscope zero position instantaneous drift is large; second, the gyroscope has poor ability to withstand lateral vibration, large yaw angle drift, and poor guidance accuracy.

[0008] Universal bracket 1-2 is the core component of the pneumatic mechanical gyroscope, which is used to generate the deflection angle of the missile body relative to the inertial space. The center of universal bracket 1-2 is located at the centroid, center of gravity and center of rotation of the gyroscope, which is a design point to ensure the normal operation of the gyroscope. The traditional shock absorber is installed at the bottom of the gyroscope. When the gyroscope is working, it is equivalent to the universal bracket 1-2 being in a cantilever beam state. It cannot ensure that the center of universal bracket 1-2 is in the three-center-in-one position of the gyroscope, resulting in excessive swing amplitude of universal bracket 1-2 when the gyroscope is subjected to strong impact, resulting in excessive zero position instantaneous drift.

[0009] In addition, the traditional shock absorber is installed at the bottom of the gyroscope gas generator 1-4 and is fixed to the mounting base 2-2 by two mounting screws 2-3. This installation method is equivalent to a rigid connection, and the impact and vibration force of the projectile can be transmitted to the gyroscope through the mounting screws 2-3. Although the rubber vibration damping pad 2-1 can absorb part of the energy, its effect is limited; finally, the installation method of the rubber vibration damping pad 2-1 determines that the shock absorber can only absorb the impact and vibration force parallel to the longitudinal axis of the gyroscope, and cannot reduce the lateral force, resulting in the gyroscope's ability to withstand lateral vibration impact is weak and the yaw angle error is large.

[0010] Therefore, improving the design of gyroscope shock absorber, improving the working environment of gyroscope, and solving the problem of gyroscope's weak resistance to vibration and shock from the design root can fundamentally improve the environmental adaptability and working reliability of gyroscope. Summary of the invention

[0011] 1. Technical issues to be resolved

[0012] The technical problem to be solved by the present invention is: how to provide a pneumatic gyro shock absorber capable of two-way composite protection.

[0013] (II) Technical solution

[0014] In order to solve the above technical problems, the present invention provides a bidirectional composite protection gyro vibration absorber, the bidirectional composite protection gyro vibration absorber comprising: a fixing frame (3-1), a rubber vibration-damping ring (3-2), a rubber vibration-damping pad (3-3), a mounting seat (3-4) and a mounting screw (3-5);

[0015] The fixing frame (3-1) and the mounting seat (3-4) are fixed by means of mounting screws (3-5); a rubber vibration-damping collar (3-2) and a rubber vibration-damping pad (3-3) are arranged between the fixing frame (3-1) and the mounting seat (3-4) to realize a flexible connection between the gyroscope and the mounting seat (3-4); the rubber vibration-damping collar (3-2) is sleeved on a gyroscope housing boss, and the rubber vibration-damping pad (3-3) is arranged under the gyroscope housing boss.

[0016] The fixing frame (3-1) is circular in shape and has a stepped hole structure inside; the fixing frame (3-1) is sleeved on the stepped rubber vibration-damping ring (3-2) and ensures that the lateral compression and longitudinal compression of the rubber vibration-damping ring (3-2) are both 1 / 3; the fixing frame (3-1) is provided with three M3 threaded holes for connection with the mounting seat (3-4) via mounting screws (3-5).

[0017] The rubber vibration-damping sleeve (3-2) is arranged in a stepped cylindrical shape; the rubber vibration-damping sleeve (3-2) is sleeved on the gyroscope housing boss; the small-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the lateral force transmitted from the projectile; the large-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the longitudinal force transmitted from the projectile.

[0018] The rubber vibration-damping sleeve (3-2) has the best vibration-damping and buffering effect when the compression amount is set to 1 / 3.

[0019] The rubber vibration-damping pad (3-3) is in the shape of a ring, and has the best vibration-damping and buffering effect when the compression amount is 1 / 3.

[0020] One end of the mounting seat (3-4) is connected to the missile body compartment section, and the other end is connected to the fixing frame (3-1); a shallow groove is provided on the surface of the end of the mounting seat (3-4) connected to the fixing frame (3-1) for embedding and fixing the rubber vibration damping pad (3-3).

[0021] The rubber vibration-damping pad (3-3) is placed between the mounting seat (3-4) and the middle boss of the gyroscope housing, and is concentric with the boss; the rubber vibration-damping ring (3-2) is sleeved on the middle boss of the gyroscope housing; and the fixing frame (3-1) is connected to the mounting seat (3-4) via three mounting screws (3-5).

[0022] After installation, the design ensures that the compression amount of the rubber vibration-damping ring (3-2) and the rubber vibration-damping pad (3-3) is 1 / 3, ensuring that the rubber material is in a good working state.

[0023] When the vibration damper is installed, a completely flexible connection between the gyroscope and the mounting seat (3-4) is achieved, effectively improving the influence of strong shock and vibration during missile launch and operation on the working performance of the gyroscope.

[0024] The shock absorber realizes that the gyroscope universal bracket is located at the centroid, center and rotation center of the gyroscope, achieving the effect of "three centers in one", which can better exert the working performance of the gyroscope and achieve the purpose of accurately measuring the posture of the projectile.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the present invention proposes a pneumatic gyro shock absorber capable of two-way composite protection. The shock absorber can realize the flexible connection between the gyro and the missile environment, overcoming the shortcomings of the traditional fixed connection method; the shock absorber can also realize the central installation of the gyro, ensuring that the gyro universal bracket is at the position where the centroid, center of gravity and center of rotation of the gyro are combined; the shock absorber can reduce the vibration impact force transmitted from the missile in the longitudinal and lateral directions, and has a two-way composite protection effect.

[0027] The gyro damper can improve the environmental adaptability and reliability of the gyro and ensure its normal operation in a certain type of missile. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of a pneumatic gyroscope;

[0029] Figure 2 It is a schematic diagram of the structure of a conventional shock absorber for a pneumatic gyroscope;

[0030] Figure 3 It is a schematic diagram of the structure of the shock absorber of the present invention;

[0031] In the figure, 1-1: housing, 1-2: universal bracket, 1-3: sensor, 1-4: gas generator; 2-1: rubber vibration damping pad, 2-2: mounting seat, 2-3: mounting screw; 3-1: fixing frame, 3-2: rubber vibration damping ring, 3-3: rubber vibration damping pad, 3-4: mounting seat, 3-5: mounting screw. DETAILED DESCRIPTION

[0032] In order to make the purpose, content, and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0033] In order to solve the above technical problems, the present invention provides a gyro shock absorber with bidirectional composite protection, such as Figure 3 As shown, the bidirectional composite protection gyro vibration damper comprises: a fixing frame (3-1), a rubber vibration damping ring (3-2), a rubber vibration damping pad (3-3), a mounting seat (3-4) and a mounting screw (3-5);

[0034] The fixing frame (3-1) and the mounting seat (3-4) are fixed by means of mounting screws (3-5); a rubber vibration-damping collar (3-2) and a rubber vibration-damping pad (3-3) are arranged between the fixing frame (3-1) and the mounting seat (3-4) to realize a flexible connection between the gyroscope and the mounting seat (3-4); the rubber vibration-damping collar (3-2) is sleeved on a gyroscope housing boss, and the rubber vibration-damping pad (3-3) is arranged under the gyroscope housing boss.

[0035] The fixing frame (3-1) is circular in shape and has a stepped hole structure inside; the fixing frame (3-1) is sleeved on the stepped rubber vibration-damping ring (3-2) and ensures that the lateral compression and longitudinal compression of the rubber vibration-damping ring (3-2) are both 1 / 3; the fixing frame (3-1) is provided with three M3 threaded holes for connection with the mounting seat (3-4) via mounting screws (3-5).

[0036] The rubber vibration-damping sleeve (3-2) is arranged in a stepped cylindrical shape; the rubber vibration-damping sleeve (3-2) is sleeved on the gyroscope housing boss; the small-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the lateral force transmitted from the projectile; the large-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the longitudinal force transmitted from the projectile.

[0037] The rubber vibration-damping sleeve (3-2) has the best vibration-damping and buffering effect when the compression amount is set to 1 / 3.

[0038] The rubber vibration-damping pad (3-3) is in the shape of a ring, and has the best vibration-damping and buffering effect when the compression amount is 1 / 3.

[0039] One end of the mounting seat (3-4) is connected to the missile body compartment section, and the other end is connected to the fixing frame (3-1); a shallow groove is provided on the surface of the end of the mounting seat (3-4) connected to the fixing frame (3-1) for embedding and fixing the rubber vibration damping pad (3-3).

[0040] The rubber vibration-damping pad (3-3) is placed between the mounting seat (3-4) and the middle boss of the gyroscope housing, and is concentric with the boss; the rubber vibration-damping ring (3-2) is sleeved on the middle boss of the gyroscope housing; and the fixing frame (3-1) is connected to the mounting seat (3-4) via three mounting screws (3-5).

[0041] After installation, the design ensures that the compression amount of the rubber vibration-damping ring (3-2) and the rubber vibration-damping pad (3-3) is 1 / 3, ensuring that the rubber material is in a good working state.

[0042] When the vibration damper is installed, a completely flexible connection between the gyroscope and the mounting seat (3-4) is achieved, effectively improving the influence of strong shock and vibration during missile launch and operation on the working performance of the gyroscope.

[0043] The shock absorber realizes that the gyroscope universal bracket is located at the centroid, center and rotation center of the gyroscope, achieving the effect of "three centers in one", which can better exert the working performance of the gyroscope and achieve the purpose of accurately measuring the posture of the projectile.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bidirectional composite protection gyro shock absorber, characterized in that: The bidirectional composite protection gyro vibration damper comprises: a fixing frame (3-1), a rubber vibration damping ring (3-2), a rubber vibration damping pad (3-3), a mounting seat (3-4) and a mounting screw (3-5); The fixing frame (3-1) and the mounting seat (3-4) are fixed by means of mounting screws (3-5); a rubber vibration-damping collar (3-2) and a rubber vibration-damping pad (3-3) are arranged between the fixing frame (3-1) and the mounting seat (3-4) to realize a flexible connection between the gyroscope and the mounting seat (3-4); the rubber vibration-damping collar (3-2) is sleeved on a gyroscope housing boss, and the rubber vibration-damping pad (3-3) is arranged under the gyroscope housing boss.

2. The bidirectional composite protection gyro shock absorber according to claim 1, characterized in that: The fixing frame (3-1) is circular in shape and has a stepped hole structure inside; the fixing frame (3-1) is sleeved on the stepped rubber vibration-damping ring (3-2) and ensures that the lateral compression and longitudinal compression of the rubber vibration-damping ring (3-2) are both 1 / 3; the fixing frame (3-1) is provided with three M3 threaded holes for connection with the mounting seat (3-4) via mounting screws (3-5).

3. The bidirectional composite protection gyro damper according to claim 2, characterized in that: The rubber vibration-damping sleeve (3-2) is arranged in a stepped cylindrical shape; the rubber vibration-damping sleeve (3-2) is sleeved on the gyroscope housing boss; the small-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the lateral force transmitted from the projectile; the large-diameter cylindrical portion cooperates with the fixing frame (3-1) to reduce vibration and buffer the longitudinal force transmitted from the projectile.

4. The bidirectional composite protection gyro damper as claimed in claim 3, characterized in that: The rubber vibration-damping sleeve (3-2) has the best vibration-damping and buffering effect when the compression amount is set to 1 / 3.

5. The bidirectional composite protection gyro damper according to claim 4, characterized in that: The rubber vibration-damping pad (3-3) is in the shape of a ring, and has the best vibration-damping and buffering effect when the compression amount is 1 / 3.

6. The bidirectional composite protection gyro damper according to claim 5, characterized in that: One end of the mounting seat (3-4) is connected to the missile body compartment section, and the other end is connected to the fixing frame (3-1); a shallow groove is provided on the surface of the end of the mounting seat (3-4) connected to the fixing frame (3-1) for embedding and fixing the rubber vibration damping pad (3-3).

7. The bidirectional composite protection gyro damper according to claim 6, characterized in that: The rubber vibration-damping pad (3-3) is placed between the mounting seat (3-4) and the middle boss of the gyroscope housing, and is concentric with the boss; the rubber vibration-damping ring (3-2) is sleeved on the middle boss of the gyroscope housing; and the fixing frame (3-1) is connected to the mounting seat (3-4) via three mounting screws (3-5).

8. The bidirectional composite protection gyro damper according to claim 7, characterized in that: After installation, the design ensures that the compression amount of the rubber vibration-damping ring (3-2) and the rubber vibration-damping pad (3-3) is 1 / 3, ensuring that the rubber material is in a good working state.

9. The bidirectional composite protection gyro damper according to claim 7, characterized in that: When the vibration damper is installed, a completely flexible connection between the gyroscope and the mounting seat (3-4) is achieved, effectively improving the influence of strong shock and vibration during missile launch and operation on the working performance of the gyroscope.

10. The bidirectional composite protection gyro damper according to claim 9, characterized in that: The shock absorber realizes that the gyroscope universal bracket is located at the centroid, center and rotation center of the gyroscope, achieving the effect of "three centers in one", which can better exert the working performance of the gyroscope and achieve the purpose of accurately measuring the posture of the projectile.

Images