CN2185344Y

CN2185344Y - Torsion bar pendulum bar vibration damper

Info

Publication number: CN2185344Y
Application number: CN 93244160
Authority: CN
Inventors: 王书振; 郭远非
Original assignee: Second Artillery Engineering Design And Research Institute
Current assignee: Second Artillery Engineering Design And Research Institute
Priority date: 1993-11-12
Filing date: 1993-11-12
Publication date: 1994-12-14
Anticipated expiration: 2003-11-12

Abstract

The utility model discloses a vibration damper with torsion bars and pendulum bars, which is composed of a vibration damping frame, and a plurality of torsion bars, torsion arms and pendulum bars, wherein, the torsion bars and the torsion arms complete the damping of vibration in the vertical direction, and the pendulum bars complete the damping of vibration in the horizontal direction. The torsion arms are arranged at an angle according to a horizontal line, and therefore, the best effect of vibration damping can be obtained. The vibration damper solves the problems that the existing vibration damping system with large displacing shock loads has large size, small load bearing capacity, difficult restoration, etc. The utility model can be used for damping vibration when nuclear explosion, etc., happens on heavy equipment, and causes large displacing shock loads.

Description

Torsion bar pendulum bar vibration damper

The utility model belongs to the impact damper system field.

The big displacement impact damper system of equipment Vertical direction generally adopts helical compression or extension spring, hydraulic spring grease cup, torsion bar spring etc.; The impact damper system of substantially horizontal also can adopt the structural vibration reduction that dangles except that can adopting above-mentioned spring.The vibration damper (Chinese patent 90202330.6-2) that spiral compression spring and fork are formed is difficult for utilizing for main equipment because height dimension is big, and bearing capacity is little.Hydraulic spring grease cup and the vibration insulating system (as U. S. Patent 3516628) formed of dangling be though bearing capacity is big, complex structure, and the hydraulic spring grease cup reset capability is poor, poor reliability, it is big to use difficulty.

The purpose of this utility model is to develop a kind of new type vibration isolator, is used for the vibration damping of guided missile and the vertical and substantially horizontal of main equipment under big displacement impact loadings such as nuclear explosion.

Torsion bar fork vibration damper is made of vibration-absorbing mounting, torsion bar and fork.Be bearing on the vibration-absorbing mounting by damping body, a plurality of torsion bars are housed on the vibration-absorbing mounting.Torsion bar one end is cemented on the vibration-absorbing mounting, and the other end links to each other with the sleeve of turning round arm by spline; The sleeve of turning round arm is contained on the vibration-absorbing mounting, can be around the rotational of its sleeve.Each rounded end of turning round arm is connected with the basis by a fork, will be hung by turning round the arm fork by damping body.The impulsive load of Vertical direction is carried out vibration damping by turning round the elastic potential energy that arm is converted into torsion bar; The impulsive load of substantially horizontal is converted into gravitational potential energy by the fork swing and carries out vibration damping.Owing to turn round the non-linear of arm motion under the big displacement situation, require and turn round the difference of arm lengths according to vibration damping, when included angle is between 3 °～12 °, can reach the best vibration damping performance.

Torsion bar fork damper structure is simple, and volume is little, and bearing capacity is big, because load--displacement diagram good reproducibility, it is accurate to reset, the reliability height, and therefore this vibration damper is easy to use.

Fig. 1 is the plan view of this vibration damper, and Fig. 2 is the plan view of this vibration damper.

Be bearing on the vibration-absorbing mounting 2 by damping body 1; Three groups of above torsion bars 3 are housed on the vibration-absorbing mounting 2 and turn round arm 4.Torsion bar 3 one ends are fixed on the vibration-absorbing mounting 2 by spline, and the other end is fixed in the sleeve of turning round arm 4 by spline; The sleeve of turning round arm 4 is contained on the vibration-absorbing mounting 2, can be around the rotational of its sleeve.Each is turned round the other end relative with sleeve on the arm 4 and is connected with the lower end ball pivot of a fork 5 respectively; Fork 5 upper ends and foundation are hinged.When the static load state, turn round arm 4 and fork 5 end that links to each other and be lower than and turn round arm and be connected an end with torsion bar, the horizontal sextant angle φ that turns round arm is between 3 °～12 °.

Claims

1, torsion bar fork vibration damper is characterized in that the torsion bar more than three groups being housed on supporting by the vibration-absorbing mounting of vibration damping object and turning round arm; This torsion bar one end is fixed on the vibration-absorbing mounting by spline, and the other end is connected by spline with the sleeve of turning round arm; This is turned round arm and can rotate around its sleeve axis; The other end of turning round arm is connected with a fork lower end ball pivot; This fork upper end is hinged with foundation.

When 2, right 1 described vibration damper is characterized in that vibration damper static load state, turn round arm and fork connecting end and be lower than this and turn round arm and torsion bar connecting end, turning round arm and horizontal line angle is 3 °～12 °.