CN210661766U

CN210661766U - Shoulder-type split expansion joint

Info

Publication number: CN210661766U
Application number: CN201921394297.9U
Authority: CN
Inventors: 吕增和; 吕增兴
Original assignee: XINGHUA TONGKE MACHINERY CO Ltd
Current assignee: XINGHUA TONGKE MACHINERY CO Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-06-02
Anticipated expiration: 2029-08-26

Abstract

The utility model provides a shoulder formula is to open expansion joint, including short section of thick bamboo, compressing member and ring type seal, short section of thick bamboo is two big small structures the same barrel constitution, compressing member comprises two ring type clamps that the structure is the same, the clamp includes semi-annular hoop, first fastening ear, second fastening ear, bolt and nut, first fastening ear and second fastening ear symmetry respectively set up the outside at the hoop both ends, first fastening ear and second fastening ear with the hoop seamless connection; the two ends of the sealing ring are respectively sleeved at one end of the short cylinder to connect the two short cylinders, the two hoops are buckled at the outer side of the sealing ring, and the first fastening lug and the second fastening lug are respectively fixed by bolts and nuts. The utility model discloses an expansion joint bearing capacity is strong, and flexible volume is great, conveniently adjusts flexible length, and difficult the pulling-off makes things convenient for production, and the human body is difficult for colliding with in the process of installation and transportation.

Description

Shoulder-type split expansion joint

Technical Field

The utility model relates to a pipe joint field especially relates to a shoulder formula is to open expansion joint.

Background

The pipeline is widely used in water supply, drainage, liquid transportation and other projects. When the engineering pipeline is subjected to the foundation settlement of a building, equipment resonance, geological transformation, pipeline medium and environmental temperature change, the pipeline starts to be damaged by stress, deformation and distortion, and the embedded pipeline even breaks and the like, so that great damage is brought to the engineering. The split expansion joint is a common pipeline joint, and the existing split expansion joint has poor pressure bearing capacity (1); (2) the expansion amount is small; (3) the telescopic length is inconvenient to adjust during installation; (4) when the stretching stress exceeds the bearing range of the telescopic head in the using process, the phenomenon of pull-off occurs, so that the transported substance is leaked; (5) when the expansion joint is produced, the pressing components of the joint have different structures, and different molds need to be prepared during production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the pressure-bearing interference killing feature who proposes is strong, and flexible volume is great, conveniently adjusts flexible length, and difficult the pulling-off makes things convenient for the shoulder formula of production to open expansion joint.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a shoulder split expansion joint comprises a short cylinder, a pressing component and a sealing ring, wherein the sealing ring is annular.

The short cylinder is composed of two cylinders with the same size and structure, the pressing component is composed of two annular hoops with the same structure, each hoop comprises a semi-annular hoop, a first fastening lug, a second fastening lug, a bolt and a nut, the first fastening lug and the second fastening lug are symmetrically arranged on the outer sides of two ends of the hoop respectively, and the first fastening lug and the second fastening lug are in seamless connection with the hoop.

The middle part of the sealing ring arches outwards, the two ends of the sealing ring are respectively sleeved at one end of the short cylinder to connect the two short cylinders, the two hoop rings are buckled at the outer side of the sealing ring, and the first fastening lug and the second fastening lug are respectively fixed by bolts and nuts.

Preferably, the seamless two annular of setting of outer wall of a short section of thick bamboo are protruding, the arch is first arch and second arch respectively, the second arch sets up the one end edge of a short section of thick bamboo, first arch sets up the outer wall of a short section of thick bamboo, first arch and the bellied centre of second are fixed the sealing washer.

Preferably, the sealing washer includes clamping ring and sealing washer body, the clamping ring is cyclic annular to be located the both ends of sealing washer body, the both ends of sealing washer body are fixed the middle part of the outer wall of clamping ring, the clamping ring with the seamless manufacturing of sealing washer body formula as an organic whole.

Preferably, the inner wall of the hoop is provided with a groove corresponding to the sealing ring.

Preferably, the inner wall of the hoop is further provided with a bayonet, the bayonet is located at the longest distance end of the stretching of the sealing ring, and the bayonet corresponds to the first protrusion for hooking.

Preferably, the outer wall of the hoop is provided with at least two annular ridges.

Preferably, the first fastening lug and the second fastening lug are identical in structure, a screw hole for the bolt to pass through is formed in the first fastening lug, a circular or polygonal groove is formed in the periphery of the screw hole, the center of the groove is identical to the center of the screw hole, and the inner diameter of the groove is larger than the outer diameter of the nut.

Preferably, the direction of the pore passage of the screw hole is perpendicular to the direction of the pipe orifice formed by buckling the two hoops.

Preferably, the edges of the first and second fastening ears are arc-shaped.

Compared with the prior art, the beneficial effects of the utility model are that: (1) the two ends of the sealing ring of the utility model are fixed between the first bulge and the second bulge, thereby improving the sealing performance of the sealing ring, the sealing ring arches outwards, when the inner part of the joint is low-pressure, the sealing ring is easy to elastically deform, the short sealing pipe is sealed, when the inner pressure is increased, the hoop ring outside the sealing ring is used for extruding the sealing ring, and the sealing performance and the pressure resistance of the utility model are improved; (2) the middle part of the inner sealing ring is arched, the stretchable length of the sealing ring is longer, and the expansion amount of the joint is increased; (3) the hoop is provided with the convex ribs, so that the telescopic length can be conveniently adjusted during installation; (4) when the pipeline at two ends is transversely stretched in the using process, the bayonet arranged on the inner wall of the hoop is hooked with the first convex edge on the short cylinder, so that the probability of loosening of the telescopic joint under stress is reduced; (5) the short cylinder and the pressing component of the expansion joint are both of the same structure, and the expansion joint is convenient to produce and manufacture. And (6) the edges of the fastening lugs are arc-shaped, so that the human body is not easy to be knocked during installation and transportation.

Drawings

Fig. 1 is a schematic structural view (a) of a shoulder-type split expansion joint of the present invention;

fig. 2 is a schematic structural view (ii) of a shoulder-type split expansion joint of the present invention;

FIG. 3 is a cross-sectional view of a shoulder split expansion joint of the present invention;

fig. 4 is a schematic structural view of the shoulder-type split expansion joint of the present invention, in which the sealing ring is connected to the short tube.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1, 2 and 3, a shoulder split expansion joint includes a short tube 100, a pressing member 200 and an annular seal ring 300.

The short cylinder 100 is composed of two cylinders with the same size and structure, the pressing member 200 is composed of two annular hoops with the same structure, each hoop comprises a semi-annular hoop 210, a first fastening lug 220, a second fastening lug 230, a bolt 240 and a nut 250, the first fastening lug 220 and the second fastening lug 230 are symmetrically arranged on the outer sides of two ends of the hoop 210 respectively, and the first fastening lug 220 and the second fastening lug 230 are connected with the hoop in a seamless mode and manufactured integrally.

The middle portion of the sealing ring 300 is arched outward, and the length of the sealing ring 300 after being stretched is longer than that of a conventional sealing ring. Two ends of the sealing ring 300 are respectively sleeved at one end of the short cylinder 100 to connect two short cylinders 100, two hoops 210 are buckled at the outer side of the sealing ring 300, and the first fastening lug 220 and the second fastening lug 230 are respectively fixed by a bolt 240 and a nut 250. When the expansion joint is used, when the internal low pressure is generated, the sealing ring 300 elastically deforms to seal the short pipe, when the pressure is increased, the hoop 210 on the outer side of the sealing ring is used for extruding the sealing ring, and the bolt and the nut are used for fixing the fastening lug to prevent the hoop from loosening.

In an embodiment, two annular protrusions are seamlessly arranged on the outer wall of the short cylinder 100, the protrusions are a first protrusion 101 and a second protrusion 102, the second protrusion 102 is arranged at the edge of one end of the short cylinder 100, the first protrusion 101 is arranged on the outer wall of the short cylinder 100, and the middle of the first protrusion 101 and the second protrusion 102 fixes one end of the sealing ring 300.

In an embodiment, referring to fig. 4, the sealing ring 300 includes a fastening ring 310 and a sealing ring body 320, the fastening ring 310 is located at two ends of the sealing ring body 320, and the two ends of the sealing ring body 320 are respectively fixed at the middle of the outer wall of the fastening ring 310. The fastening ring 310 and the sealing ring body 320 are manufactured in a seamless manner. The fastening ring 310 is fixed between the first protrusion 101 and the second protrusion 102, so as to prevent the two ends of the sealing ring 300 from shrinking inwards, which causes the movement of the sealing ring on the outer wall of the short pipe, and thus the sealing effect is poor.

In one embodiment, the inner wall of the hoop 210 is formed with a groove 211 corresponding to the sealing ring 300. The sealing ring 300 is located in the position of the groove 211, and the sealing ring 300 can seal two short pipe interfaces.

In an embodiment, the inner wall of the hoop 210 is further provided with a bayonet 212, the bayonet 212 is located at the end of the longest distance of the extension of the sealing ring 300, and the bayonet 212 is hooked with the first protrusion 101 correspondingly. When the transverse stretching distance exceeds the maximum stretching distance of the sealing ring, the bayonet 212 and the first protrusion 101 are correspondingly hooked, so that the short cylinder 100 and the sealing ring 300 are prevented from being pulled off, and the leakage of the transported substances is prevented.

In one embodiment, the outer wall of the hoop 210 is provided with at least two annular ribs 213. The friction of the hoop 210 is increased, so that the hoop 210 is fixed conveniently during the installation process, and the short tube 100 inside the hoop 210 is stretched.

In an embodiment, the first fastening lug 220 and the second fastening lug 230 have the same structure, a screw hole 241 for the bolt to pass through is disposed on the first fastening lug 220, a circular or polygonal groove 242 is disposed on the periphery of the screw hole 241, the center of the groove 242 is the same as the center of the screw hole 241, and the inner diameter of the groove 242 is larger than the outer diameter of the nut 250. During installation, the nut 250 is positioned in the groove, so that the appearance is attractive, and the nut can be prevented from being loosened by external force.

In one embodiment, the hole direction of the screw hole 241 is perpendicular to the direction of the pipe orifice formed by the two hoops 210. The diameter of the pipe orifice of the hoop 210 is fastened, and the sealing ring 300 is compressed.

In one embodiment, the edges of the first fastening ear 220 and the second fastening ear 230 are arc-shaped. The expansion joint is prevented from hurting the human body in the installation or transportation process.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims

1. A shoulder split expansion joint characterized by: comprises a short cylinder, a pressing component and a sealing ring;

the short barrel is composed of two barrel bodies with the same size and structure, the pressing component is composed of two annular hoops with the same structure, each hoop comprises a semi-annular hoop, a first fastening lug, a second fastening lug, a bolt and a nut, the first fastening lug and the second fastening lug are respectively and symmetrically arranged on the outer sides of two ends of the hoop, and the first fastening lug and the second fastening lug are in seamless connection with the hoop;

2. A shoulder split expansion joint as claimed in claim 1, wherein: the outer wall of a short section of thick bamboo is seamless sets up two annular archs, the arch is first arch and second arch respectively, the protruding setting of second is in the one end edge of a short section of thick bamboo, first arch sets up the outer wall of a short section of thick bamboo, first arch and the bellied centre of second are fixed the one end of sealing washer.

3. A shoulder split expansion joint as claimed in claim 2, wherein: the sealing ring comprises a fastening ring and a sealing ring body, wherein the fastening ring is positioned at two ends of the sealing ring body, two ends of the sealing ring body are fixed at the middle part of the outer wall of the fastening ring, and the fastening ring and the sealing ring body are integrally manufactured in a seamless mode.

4. A shoulder split expansion joint as claimed in claim 1, wherein: and the inner wall of the hoop is provided with a groove corresponding to the sealing ring.

5. A shoulder split expansion joint as claimed in claim 2, wherein: the inner wall of the hoop is further provided with a bayonet which is located at the longest distance end of the seal ring, and the bayonet corresponds to the first protrusion to be hooked.

6. A shoulder split expansion joint as claimed in claim 1, wherein: the outer wall of the hoop is provided with at least two annular convex edges.

7. A shoulder split expansion joint as claimed in claim 1, wherein: the first fastening lug and the second fastening lug are identical in structure, a screw hole for the bolt to penetrate through is formed in the first fastening lug, a circular or polygonal groove is formed in the periphery of the screw hole, the center of the groove is identical to that of the screw hole, and the inner diameter of the groove is larger than the outer diameter of the nut.

8. A shoulder split expansion joint as claimed in claim 7, wherein: the pore channel direction of the screw hole is vertical to the pipe orifice direction formed by buckling the two hoops.

9. A shoulder split expansion joint as claimed in claim 1, wherein: the edges of the first fastening lug and the second fastening lug are arc-shaped.