阅读说明：本技术 一种黏滞阻尼器 (Viscous damper ) 是由 曾国军 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种黏滞阻尼器,包括缸筒、活塞组件、中空的内套筒、中空的外套筒；所述内套筒左端与缸筒右端固定连接,所述内套筒套接于外套筒的中空腔内,且内套筒与外套筒可相对运动；在内套筒与外套筒之间设有可停止内套筒和外套筒相对运动的锁止装置；锁止装置使得内套筒与外套筒的相对运动距离S1不小于日常载荷迫使活塞运动的位移S2,且S1不大于异常载荷迫使活塞运动的位移S3。本发明在日常载荷中,活塞杆不产生位移,保护了与活塞杆接触的密封件不受磨损。在异常载荷下,由于不存在间隙,对震动响应更灵敏,耗能效率更高,减震效果更好。(The invention discloses a viscous damper, which comprises a cylinder barrel, a piston assembly, a hollow inner sleeve and a hollow outer sleeve, wherein the cylinder barrel is provided with a piston rod; the left end of the inner sleeve is fixedly connected with the right end of the cylinder barrel, the inner sleeve is sleeved in the hollow cavity of the outer sleeve, and the inner sleeve and the outer sleeve can move relatively; a locking device which can stop the relative movement of the inner sleeve and the outer sleeve is arranged between the inner sleeve and the outer sleeve; the locking device enables the relative movement distance S1 of the inner sleeve and the outer sleeve to be not less than the displacement S2 of the piston forced by daily load, and S1 is not more than the displacement S3 of the piston forced by abnormal load. According to the invention, the piston rod does not displace in daily load, and a sealing element in contact with the piston rod is protected from abrasion. Under the abnormal load, because there is not the clearance, it is more sensitive to vibrations response, and the power consumption efficiency is higher, and the shock attenuation effect is better.)

1. The utility model provides a viscidity attenuator, includes the cylinder, sets up the piston assembly in the cylinder, the piston assembly includes piston that can slide in the cylinder, follow the piston rod of wearing out, airtight cavity is separated into with the cylinder to the piston, is equipped with the damping hole that can make airtight cavity intercommunication on the piston, its characterized in that: the device also comprises a hollow inner sleeve and a hollow outer sleeve; the left end of the inner sleeve is fixedly connected with the right end of the cylinder barrel, the inner sleeve is sleeved in the hollow cavity of the outer sleeve, and the inner sleeve and the outer sleeve can move relatively;

a locking device which can stop the relative movement of the inner sleeve and the outer sleeve is arranged between the inner sleeve and the outer sleeve;

the locking device enables the relative movement distance S1 of the inner sleeve and the outer sleeve to be not less than the displacement S2 of the piston forced by daily load, and S1 to be not more than the displacement S3 of the piston forced by abnormal load.

2. The viscous damper of claim 1, wherein: the locking device comprises two clamping grooves which are arranged around the outer wall of the inner sleeve at intervals and an elastic stopping device arranged on the outer sleeve; in an initial state, the setting area of the elastic stopping device is positioned between the two clamping grooves; the distance between the two card slots is 2 times S1;

the elastic stopping device can be clamped into the clamping groove to force the inner sleeve and the outer sleeve to be relatively static.

3. The viscous damper of claim 2, wherein: the elastic stopping device comprises a clamping ring groove arranged around the inner wall of the outer sleeve, a clamping ring arranged in the clamping ring groove and a spring, a through hole communicated with the clamping ring groove is formed in the outer wall of the outer sleeve, the spring is arranged in the through hole, and a plug is arranged at the through hole;

one end of the spring is abutted to the clamping ring, and the other end of the spring is abutted to the plug.

4. The viscous damper of claim 3, wherein: wear-resisting rings are arranged on the outer wall of the inner sleeve and between the two clamping grooves in a surrounding mode.

5. The viscous damper of claim 3, wherein: the wall of the clamping groove is a slope surface, and the width of the bottom of the clamping groove is smaller than the width of the opening of the clamping groove;

the lower end of the clamping ring is provided with a chamfer which has the same inclination with the clamping groove wall and can be matched with the clamping groove wall.

6. The viscous damper according to any one of claims 1 to 5, characterized in that: the right end of the piston rod can extend into the hollow cavity of the inner sleeve, and the axes of the cylinder barrel, the piston rod, the inner sleeve and the outer sleeve are on the same straight line.

7. The viscous damper of claim 6, wherein: the two ends of the cylinder barrel are provided with end covers, a static sealing element is arranged at the joint of the end covers and the cylinder barrel, and dynamic sealing elements are arranged in the contact areas of the two ends of the piston rod and the end covers.

8. The viscous damper of claim 7, wherein: the left end of the piston rod is fixedly connected with a left earring; the right end of the outer sleeve is plugged, and a right earring is fixedly connected to the plugged part.