CN208578913U - Double containment spring - Google Patents

Abstract

The utility model discloses double containment springs, including cylinder body and support sleeve, the inner sidewall of the cylinder body is equipped with card collar groove, retainer ring is fixedly installed in the card collar groove, the inner circle side wall of the retainer ring is fixedly mounted on the lateral wall of support sleeve, the inner sidewall of the support sleeve is slidably fitted with piston rod, the inner sidewall top of the support sleeve is equipped with the first caulking groove, dustband is fixedly installed in first caulking groove, the inner sidewall of the support sleeve is equipped with the second caulking groove, the quantity of second caulking groove is two, asbestos packing circle is equipped in second caulking groove, the lateral wall of the support sleeve is equipped with third caulking groove, the quantity of the third caulking groove is two, gasket is fixedly installed in the third caulking groove, the utility model in cylinder body by using two gaskets and two asbestos packing circles, it is effectively real by double static seals and double acting sealing Existing zero leakage, enhances the impact resistance of replacement.

Description

Double containment spring

Technical field

The utility model relates to nitrogen gas spring technical fields, specially double containment spring.

Background technique

Nitrogen gas spring (abbreviation punch die nitrogen gas spring or nitrogen gas spring or nitrogen cylinder or nitrogen cylinder) is a kind of The novel elastic component of working media, it is small in size, elastic force is big, stroke is long, stable working, and manufacture is accurate, long service life, mesh Preceding traditional nitrogen gas spring is all made of single sealing means, poor sealing, and gasket is easy to appear leakage phenomenon, for this purpose, we It is proposed double containment spring.

Summary of the invention

The purpose of this utility model is to provide double containment springs, to solve the problems mentioned in the above background technology.

To achieve the above object, the utility model provides the following technical solutions: double containment spring, including cylinder body and support Set, the inner sidewall of the cylinder body are equipped with card collar groove, and retainer ring is fixedly installed in the card collar groove, and the inner circle side wall of the retainer ring is solid On the lateral wall of support sleeve, the inner sidewall of the support sleeve is slidably fitted with piston rod, the inside of the support sleeve for Dingan County Wall top is equipped with the first caulking groove, and dustband is fixedly installed in first caulking groove, and the inner sidewall of the support sleeve is equipped with second Caulking groove, the quantity of second caulking groove are two, are equipped with asbestos packing circle, the lateral wall of the support sleeve in second caulking groove Equipped with third caulking groove, the quantity of the third caulking groove is two, is fixedly installed with gasket in the third caulking groove.

Preferably, first caulking groove, the second caulking groove and third caulking groove be in a ring.

Preferably, the inner bottom of the cylinder body is fixedly installed with spring.

Preferably, the lateral wall of the cylinder body is fixedly installed with outer ring, and the top of the outer ring is equipped with water channel.

Compared with prior art, the utility model has the beneficial effects that the utility model in cylinder body by using two Gasket and two asbestos packing circles effectively realize zero leakage by double static seals and double acting sealing, enhance the anti-impact of replacement Ability is hit, and is equipped with spring in the inner bottom of cylinder body, buffer function is played, prevents the bottom end of piston rod and cylinder body from bumping against, increase The service life for adding cylinder body is equipped with outer ring in the outside of cylinder body, is evenly equipped with water channel in outer ring, by injecting cold water into water channel, The heat on cylinder body is reduced by cold water, plays heat spreading function.

Detailed description of the invention

Fig. 1 is the overall schematic of the utility model.

Fig. 2 is the outer ring top view of the utility model.

In figure: 1, cylinder body, 2, support sleeve, 3, card collar groove, 4, retainer ring, the 5, first caulking groove, 6, dustband, 7, piston rod, 8, Third caulking groove, 9, gasket, the 10, second caulking groove, 11, asbestos packing circle, 12, spring, 13, outer ring, 14, water channel.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of technical solution: double containment spring, including cylinder body 1 and support Set 2, the inner sidewall of cylinder body 1 are equipped with card collar groove 3, and retainer ring 4 is fixedly installed in card collar groove 3, and the inner circle side wall of retainer ring 4 is fixedly mounted On the lateral wall of support sleeve 2, for retainer ring 4 for positioning fixed support sleeve 2, the inner sidewall of support sleeve 2 is slidably fitted with piston rod 7, the inner sidewall top of support sleeve 2 is equipped with the first caulking groove 5, is fixedly installed with dustband 6, the inner circle of dustband 6 in the first caulking groove 5 Side walls are mounted on the side wall of piston rod 7, and the inner sidewall of support sleeve 2 is equipped with the second caulking groove 10, the quantity of the second caulking groove 10 It is two, is equipped with asbestos packing circle 11, dynamic sealing of the asbestos packing circle 11 for realizing piston rod 7, stone in the second caulking groove 10 It can be applied on the contact surface of the inside of cotton packing circle 11 and the opposite sliding of the side wall of piston rod 7, asbestos packing circle 11 and piston rod 7 Lubricating oil with heat resistance, the lateral wall of support sleeve 2 are equipped with third caulking groove 8, and the quantity of third caulking groove 8 is two, and third is embedding Gasket 9 is fixedly installed in slot 8, for realizing the static sealing of support sleeve 2, the outside of gasket 9 is slidably installed gasket 9 In the inner sidewall of cylinder body 1.

Specifically, the first caulking groove 5, the second caulking groove 10 and third caulking groove 8 are in a ring, pass through dustband 6, asbestos packing Circle 11 and gasket 9 are separately mounted in the first caulking groove 5 in a ring, the second caulking groove 10 and third caulking groove 8, are realized in cylinder body 1 It is dust-proof and sealing, prevent helium leak.

Specifically, the inner bottom of cylinder body 1 is fixedly installed with spring 12, if the bottom end of piston rod 7 directly with cylinder body 1 Inner bottom bump against, can under the action of inertia force and aerodynamic force, increase piston rod 7 bottom end and cylinder body 1 inner bottom Abrasion, be easy to produce biggish shock loading, influence whole stability, when the bottom end of piston rod 7 is moved to close to cylinder body 1 When the position of bottom, contact spring 12, movement velocity slows down, and plays the role of buffering, increases the service life of cylinder body 1.

Specifically, the lateral wall of cylinder body 1 is fixedly installed with outer ring 13, the top of outer ring 13 is equipped with water channel 14, water channel 14 In the upper and lower ends for running through outer ring 13.

Working principle: the first caulking groove in a ring is separately mounted to by dustband 6, asbestos packing circle 11 and gasket 9 5, it in the second caulking groove 10 and third caulking groove 8, realizes the dust-proof and sealing in cylinder body 1, prevents helium leak, the bottom end of piston rod 7 When moving to close to the position of 1 bottom of cylinder body, contact spring 12, movement velocity slows down, and plays the role of buffering, by water channel Cold water is injected on 14 top, reduces the heat on cylinder body 1 by cold water, plays heat spreading function.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. double containment spring, it is characterised in that: including cylinder body (1) and support sleeve (2), the inner sidewall of the cylinder body (1) is equipped with card Ring recess (3), the card collar groove (3) is interior to be fixedly installed with retainer ring (4), and the inner circle side wall of the retainer ring (4) is fixedly mounted on support On the lateral wall for covering (2), the inner sidewall of the support sleeve (2) is slidably fitted with piston rod (7), the inside of the support sleeve (2) Wall top is equipped with the first caulking groove (5), is fixedly installed with dustband (6) in first caulking groove (5), the support sleeve (2) it is interior Side wall is equipped with the second caulking groove (10), and the quantity of second caulking groove (10) is two, is equipped with asbestos in second caulking groove (10) The lateral wall of packing circle (11), the support sleeve (2) is equipped with third caulking groove (8), and the quantity of the third caulking groove (8) is two, Gasket (9) are fixedly installed in the third caulking groove (8).

2. double containment spring according to claim 1, it is characterised in that: first caulking groove (5), the second caulking groove (10) and Third caulking groove (8) is in a ring.

3. double containment spring according to claim 1, it is characterised in that: the inner bottom of the cylinder body (1) is fixedly mounted There are spring (12).

4. double containment spring according to claim 1, it is characterised in that: the lateral wall of the cylinder body (1) is fixedly installed with The top of outer ring (13), the outer ring (13) is equipped with water channel (14).