CN2268172Y

CN2268172Y - Axial-locking type quick-acting pipe joint

Info

Publication number: CN2268172Y
Application number: CN 96223125
Authority: CN
Inventors: 白桂森
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-23
Filing date: 1996-12-23
Publication date: 1997-11-19
Anticipated expiration: 2006-12-23

Abstract

The utility model relates to an axial locking type quick-acting pipe joint, comprising a female member 1, a ring 2 which is sheathed on the periphery of the female member, a spring 3 which can apply axial backward pushing force on the ring, clamping balls 4 and a lug 6; an insertion core 5 can be inserted in an inner cavity of the female member; the clamping balls are plugged in radial tapered through holes which are circumferentially distributed along the female member 1; the lug which is fixed on the female member can be slidingly sheathed in an axial slide chute on the ring 2. The utility model has the advantage that the insertion core 5 can also be guaranteed to be connected with the pipe joint under the crash of external forces.

Description

Axial enclosed type quick coupling

The utility model relates to a kind of quick type joint of pipeline by keeping under radial pressure at the ball between the part, roller or helical spring connecting, particularly a kind of axial enclosed type quick coupling.

A kind of quick coupling of the prior art is made up of at the ring of female part periphery female part and ring set that its inner chamber can be inserted in lock pin, female part front end edge circumferencial direction is distributed with some radial taper through holes, ball plug is placed in this conical through-hole, and, its underpart can be connected in the annular groove of lock pin to finish being connected between lock pin and the female part, its top then contacts with the inner groove of ring, when post-tensioning is compressed the ring of spring sinciput, the inner groove face that ball can be encircled drives and climbs annular groove on lock pin along the tilted conical surface of conical through-hole, thereby lock pin and female part are separated.Because in the prior art, the mechanism that ring is axially locked not, when quick coupling was collided, lock pin was very easily thrown off from female part, influenced proper functioning.

The purpose of this utility model is to overcome deficiency of the prior art, can ring axially be locked and provide a kind of, and when external force is collided, the axial enclosed type quick coupling that lock pin can not break away from from female part.

The purpose of this utility model realizes by following approach.

Axial enclosed type quick coupling, comprise that its inner chamber can fill in the female part of lock pin, ring set and be contained in female part along the clamping ball in the radial direction through hole that circumferentially distributes at the ring of female part periphery, the spring that can add axial back thrust to circulating application and plug, its structure outline is: but also include a kind of be fixed on the female part but sliding sleeve is gone into the projection that ring is gone up axial slide.

The purpose of this utility model can also realize by following approach.

Projection or pin a kind of and that female part is affixed, or a kind of ball that is positioned in the female part groove.

Preferably also make on the ring have a kind of intersect with axial slide be communicated with, circumferential chute that projection can slide therein.

Axial slide and circumferential chute are preferably all along ring internal face excavation, and their channel section is a kind of groove structure.

In sum, have only the rotating ring of working as, when making the axial slide alignment bumps on it, but ring post-tensioning and drive the clamping ball and make lock pin break away from female part; And work as rotating ring, when making the axial slide misalignment projection on it, ring is in axial blocking.So the utility model has following advantage compared to existing technology: axial block ring, thus when the impact tube joint, can guarantee that still lock pin connects with the firm of female part, can not break away from female part.

Accompanying drawing 1 is the structural representation of the utility model most preferred embodiment.

Accompanying drawing 2 is circumferentially deploying figure of ring inwall.

Below we carry out more detailed description to the utility model in conjunction with the accompanying drawings.Most preferred embodiment:

With reference to accompanying drawing 1 and accompanying drawing 2, axially the enclosed type quick coupling is made up of female part 1, ring 2, spring 3, clamping ball 4 and projection 6.Female part 1 inner chamber can be filled in lock pin 5, encircles 2 ring sets in female part 1 periphery; Spring 3 is a kind of pressure springs, be installed between ring 2 first half inwalls and female part 1 periphery, and spring 3 two end part is bearing in respectively on the ring 2 interior steps and female part 1 shaft shoulder; Clamping ball 4 plug is contained in female part 1 along in its circumferentially uniform radial taper through hole, and clamping ball 4 tops can contact with the groove end face of circular groove on the ring 2 rear end inwalls, and its underpart then can be connected in the circular groove of lock pin 5 peripheries; Female part 1 periphery wall manufacturing has a groove, with ball as projection 6 be fixed in this groove; Encircle 2 front inner wall and then excavate axial slide 21 and the circumferential chute 22 that mutual intersection is communicated with, their transverse section all is groove structure, but the ball sliding sleeve is gone in axial slide 21 and the circumferential chute 22.The length of axial slide 21 should retreat the stroke that clamping ball 4 is pulled away from lock pin 5 circular grooves with ring 2 at least and equate.

It is same as the prior art that present embodiment is not stated part.

Claims

1. axial enclosed type quick coupling, comprise that its inner chamber can be filled in the female part of lock pin (5) (1), ring set is contained in female part (1) along the clamping ball (4) in the circumferential radial direction through hole that distributes at the ring (2) of female part (1) periphery, the spring (3) that can apply axial back thrust to ring (2) and plug, it is characterized in that, also include a kind of being fixed on the female part (1), but but sliding sleeve is gone into the projection (6) that ring (2) is gone up axial slide (21).

2. axial enclosed type quick coupling according to claim 1 is characterized in that, projection (6) or pin or a kind of ball that is positioned in female part (1) groove a kind of and that female part (1) is affixed.

3. axial enclosed type quick coupling according to claim 1 is characterized in that, also make on the ring (2) have a kind of intersect with axial slide (21) be communicated with, circumferential chute (22) that projection (6) can slide therein.

4. axial enclosed type quick coupling according to claim 3 is characterized in that, axial slide (21) and circumferential chute (22) are all along ring (2) internal face excavation, and above-mentioned two chute transverse section all are a kind of groove structure.