CN2153675Y

CN2153675Y - Tensile compression bidirectional shock-absorber

Info

Publication number: CN2153675Y
Application number: CN 92239549
Authority: CN
Inventors: 张玉虎; 杨文科; 申明华; 陈杲
Original assignee: SHANXI TRAFFIC SCIENE INST
Current assignee: SHANXI TRAFFIC SCIENE INST
Priority date: 1992-11-11
Filing date: 1992-11-11
Publication date: 1994-01-19
Anticipated expiration: 2002-11-11

Abstract

The utility model relates to a tensile compression bidirectional shock-absorber which is composed of an isolation spring, a draw ring, an inner rod, an inner cylinder, an inner sleeve, an outer sleeve and an end cover. The isolation spring 9 is provided with variable pitch, the pitch of the spring of the tension bearing part is tight, and the pitch of the spring of compression bearing part is wide. Thus, the tensile compression bidirectional shock-absorber can be used for pulling or compressing the bidirectional vibration isolation, and can also be used for the vibration isolation occasions of simple tension and simple compression. The utility model has the advantages of simple manufacturing technique and low cost.

Description

Tensile compression bidirectional shock-absorber

The utility model relates to the vibration isolation field, particularly the vibration isolation field of mechanical vibration.

It is the main path of subduing hazard of vibration that vibration is isolated, and in order to reduce the influence of vibration source to peripheral facilities (as handrail, lathe, seat, precision instrument and equipment etc.), need carry out isolation to these facilities and vibration source.Vibration isolating method is needing the facility of vibration isolation to be connected with vibration source by elastic element.At present, modal in the vibration isolator is pressure elastic element formula vibration isolator, and wherein secondly pressure spring formula vibration isolator (as motorcycle with vibration isolator etc.) most importantly is pulling force elastic element formula vibration isolator (as the draught spring vibration isolator).This two classes spring all can't satisfy the requirement of tension compression bidirectional vibration isolation, need the occasion of tension compression bidirectional vibration isolation generally all to replace with the fluid friction damping vibration damper at great majority, but there is the manufacturing process complexity in this kind vibration damper, shortcomings such as cost height.

The purpose of this utility model just is to overcome the deficiency of prior art, provides that a kind of manufacturing process is simple, cost is low, tension compression bidirectional vibration isolator that can the tension compression bidirectional vibration isolation.

Design of the present utility model for achieving the above object is: 1. in order to guarantee the tension compression bidirectional vibration isolation, vibration-isolating spring of the present utility model is taked the distance of switching political loyalty, and the pitch of the spring of advancing side is tight, and the pitch of the spring of part in compression is wide; 2. all paste cylindrical around an inboard week for the ease of the two end part of two ends traction the utility model vibration-isolating spring, the end is concordant; 3. in order to regulate minimax Compression and Expansion stroke effectively; the utility model adopts inner core to be provided with plus-minus regulating block and regulating ring and the relative installation by bar, inner core in adjusting and the method for adjusting regulating block, regulating ring is adjusted minimax Compression and Expansion stroke, and the Compression and Expansion of vibration-isolating spring also is subjected to the protection of the minimax stroke of interior bar, inner core simultaneously.

Description of drawings:

Fig. 1: the utility model structural representation

Wherein: 1-draw ring 2-gland nut 3-end cap 4-packing ring

Bar 8-overcoat in the cover 7-in the 5-gland nut 6-

9-vibration-isolating spring 10-regulating ring 11-inner core

12-regulating block 13-end cap 14-packing ring

The 15-draw ring

Discuss structure of the present utility model in detail below in conjunction with embodiment and accompanying drawing 1.

A kind of tension compression bidirectional vibration isolator, it is by vibration-isolating spring, draw ring, interior bar, inner core, interior cover, overcoat, end cap is formed, vibration-isolating spring 9 is the distance of switching political loyalty, the spring pitch of promptly bearing stretched portion is tight, the spring pitch of bearing compression member is wide, cylindrical is all pasted around an inboard week in the two end part of vibration-isolating spring, the end is concordant and draw ring 1 is housed, 15, the outside thread of interior cover 6 joins with the internal thread of the end cap 3 that places interior cover 6 outer ends, the stage clip end of vibration-isolating spring 9 is by end cap 3,

gland nut

2,5 and place in the cover 6 inner ends packing ring 4 compress, the outside thread of the internal thread of the lower end of draw ring 1 and interior bar 7 external parts joins, the other end of interior bar 7 inserts inner core 11, in placing the outside thread of the outer overcoat 8 of cover 6 with place the internal thread of the end cap 13 of overcoat 8 outer ends to join, the extension spring end of vibration-isolating spring 9 is joined by the outside thread of the internal thread of inner core 11 underparts in the cover 6 in placing and draw ring 15 upper end portions by end cap 13 and the packing ring 14 that places overcoat 8 inner ends and compresses.The end end that interior bar 7 inserts inner core 11 is a positive stop end, and regulating block 12 places the bottom of inner core, the positive stop end of bar 7 in regulating ring 10 is set in.

Working principle of the present utility model is: when vibration-isolating spring 9 pressurizeds, interior bar 7 is moved downward to regulating block 12 and contacts, and reaches maximum pressurized stroke.When vibration-isolating spring 9 tensions, interior bar 7 is moved upwards up to regulating ring 10 and passes with inner core 11 bottom connections and touch, and reaches maximum tension stroke.Length by plus-minus regulating ring 10, regulating block 12 just can be regulated the tension and compression stroke.

Use the utility model when the vibration isolation of needs tension compression bidirectional, can the tension compression bidirectional vibration isolation.Also can be applied to simple the stretching and the simple vibration isolation occasion of compressing.The simple cost of the utility model manufacturing process is low, has wide range of applications.

Claims

1, a kind of tension compression bidirectional vibration isolator that constitutes by vibration-isolating spring, it is characterized in that vibration-isolating spring 9 is the distance of switching political loyalty, the spring pitch of promptly bearing stretched portion is tight, the spring pitch of bearing compression member is wide, cylindrical is all pasted around an inboard week in the two end part of vibration-isolating spring, the end is concordant and draw ring 1 is housed, 15, the outside thread of interior cover 6 joins with the internal thread of the end cap 3 that places interior cover 6 outer ends, the stage clip end of vibration-isolating spring 9 is by end cap 3, gland nut 2,5 and place in the cover 6 inner ends packing ring 4 compress, the outside thread of the internal thread of the lower end of draw ring 1 and interior bar 7 external parts joins, the other end of interior bar 7 inserts inner core 11, in placing the outside thread of the outer overcoat 8 of cover 6 with place the internal thread of the end cap 13 of overcoat 8 outer ends to join, the extension spring end of vibration-isolating spring 9 is joined by the outside thread of the internal thread of inner core 11 underparts in the cover 6 in placing and draw ring 15 upper end portions by end cap 13 and the packing ring 14 that places overcoat 8 inner ends and compresses.

2, tension compression bidirectional vibration isolator according to claim 1, the end end that bar 7 inserts inner core 11 in it is characterized in that is a positive stop end, regulating block 12 places the bottom of inner core, the positive stop end of bar 7 in regulating ring 10 is set in.