CN216768686U

CN216768686U - Metal corrugated hose end connecting structure capable of avoiding torsion and metal corrugated hose

Info

Publication number: CN216768686U
Application number: CN202123210555.3U
Authority: CN
Inventors: 王静; 颜克君
Original assignee: Chuanrun Hydraulic Technology Jiangsu Co ltd
Current assignee: Chuanrun Hydraulic Technology Jiangsu Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-17
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a torsion-preventing end connection structure of a metal corrugated hose, which comprises a connector, a circular ring and a metal corrugated pipe, wherein one end of the circular ring is welded with the metal corrugated pipe, the other end of the circular ring is welded with the end part of a thin-wall end of the connector, an inner-circle chamfer hexagonal nut is sleeved outside the thin-wall end of the connector, the sleeving is in interference fit through a chamfer structure, the end part of the thin-wall end of the connector is positioned outside the inner-circle chamfer hexagonal nut after penetrating through the inner-circle chamfer hexagonal nut, and the exposed end port of the thin-wall end of the connector is welded with the circular ring. The utility model also provides a novel metal corrugated hose end connecting structure capable of avoiding torsion and a novel metal corrugated hose capable of avoiding torsion when the end is connected with an external structure.

Description

Avoid torsional metal corrugated hose end connection structure and metal corrugated hose

Technical Field

The utility model relates to the technical field of universal hydraulic devices, in particular to a torsion-preventing end connection structure of a corrugated metal hose and the corrugated metal hose.

Background

When metal corrugated hose one end or both ends were nut connection structure, accessible tip transition joint was connected with the box, in order to increase the steadiness and the leakproofness of being connected when being connected with external structures such as boxes, need tighten the nut, beat the power distance, metal corrugated hose often can then rotate and then produce the distortion this moment. The existence of this phenomenon will greatly increase the risk of the metal bellows breaking and leaking, the installer needs to readjust the metal bellows after the twisting, the time is long, the installation efficiency is low, it is difficult to completely adjust the twisted metal bellows to the natural state, the adjusted metal bellows will usually have slight twisting, and the risk of the metal bellows breaking and leaking may be increased due to the existence of continuous stress in the long-term use state. The joint part of the metal corrugated hose used in the prior art is a thin-walled pipe, and a structure for clamping and preventing torsion cannot be lathed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a novel metal corrugated hose end connecting structure capable of avoiding torsion and a novel metal corrugated hose capable of avoiding torsion when the end is connected with an external structure.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a metal corrugated hose end connecting structure capable of avoiding torsion comprises a connector, a ring and a metal corrugated pipe, wherein one end of the ring is welded with the metal corrugated pipe, the other end of the ring is welded with the end of a thin-wall end of the connector, an inner-circle chamfer hexagonal nut is sleeved outside the thin-wall end of the connector, the sleeving is in interference fit sleeving through a chamfer structure, the end of the thin-wall end of the connector is positioned outside the inner-circle chamfer hexagonal nut after penetrating through the inner-circle chamfer hexagonal nut, namely the end of the thin-wall end of the connector is connected with the inner-circle chamfer hexagonal nut in interference fit through a tool after penetrating through the inner circle chamfer hexagonal nut, and meanwhile the end of the thin-wall end of the connector is exposed on the other side of the inner-circle chamfer hexagonal nut; the port of the exposed thin-wall end of the joint is welded with the circular ring.

Furthermore, after the ring and the metal corrugated pipe are welded, a net sleeve is sleeved outside the metal corrugated pipe, and a sleeve is arranged outside the net sleeve at the end part of the metal corrugated pipe welded with the ring.

Further, the net sleeve and the sleeve are welded with the circular ring.

Furthermore, the chamfer structure is a joint chamfer arranged on the outer edge of the end part of the joint thin-wall end, and meanwhile, a nut chamfer capable of being sleeved with the outer edge of the joint thin-wall end in an interference fit manner is arranged on the inner edge of the inner round chamfer hexagonal nut.

Furthermore, the joint chamfer angle is 3-5 degrees, the nut chamfer angle is smaller than the joint chamfer angle, and the end part of the joint thin-wall end penetrates through the inner circle of the inner circle chamfer hexagonal nut and then is connected with the inner circle chamfer hexagonal nut in an interference fit mode through a tool.

The utility model also provides a metal corrugated hose, and the end head of the metal corrugated hose adopts the end head connecting structure of the metal corrugated hose capable of avoiding torsion.

Compared with the prior art, the utility model has the advantages that:

the end connecting structure of the metal corrugated hose provided by the utility model provides a clamping part for the end of the metal corrugated hose when being connected with external structures such as a box body and the like through the arrangement of the inner-circle chamfer hexagonal nut, and the metal corrugated hose does not rotate when a moment is applied, so that the metal corrugated hose is not twisted any more, and the risks of fracture and leakage caused by the twisting of the metal corrugated hose are avoided; the inner circle chamfer hexagonal nuts are connected in an interference fit mode, the number of welding lines is not increased, and leakage points are not increased; meanwhile, the small-angle interference fit connection of the inner-circle chamfer hexagonal nut solves the technical problem that the thin-wall end of the joint is a thin-wall pipe, and a structure which can be clamped and prevented from twisting cannot be lathed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a connection structure of a joint and an inner round chamfer hexagonal nut;

fig. 3 is a disassembly structure schematic diagram of the joint and the internal round chamfer hexagonal nut.

In the figure, 1-joint, 2-internal round chamfer hexagonal nut, 3-ring, 4-sleeve, 5-metal corrugated hose, 6-net sleeve and 7-joint thin-wall end.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The scope of the present invention is not limited to the following embodiments, and any equivalent changes or substitutions made by those skilled in the art in light of the present disclosure should be considered to fall within the scope of the present invention.

At present, a metal corrugated hose 5 in the prior art is generally a metal corrugated hose 5 without an inner round chamfer hexagonal nut 2 structure as shown in fig. 1, and as the ring 3 and the joint 1 are thin-walled pipes, the structure which can be clamped by a wrench cannot be processed, the connection of an external structure often has a twisting phenomenon.

The utility model relates to an end connecting structure of a metal corrugated hose 5 capable of avoiding torsion, which comprises a connector 1, a ring 3 and a metal corrugated pipe, wherein one end of the ring 3 is welded with the metal corrugated pipe, the other end of the ring 3 is welded with the end part of a connector thin-wall end 7, an inner-circle chamfer hexagonal nut 2 is sleeved outside the connector thin-wall end 7, the sleeving is in interference fit sleeving through a chamfer structure, the end part of the connector thin-wall end 7 is positioned outside the inner-circle chamfer hexagonal nut 2 after penetrating through the inner-circle chamfer hexagonal nut 2, namely the end part of the connector thin-wall end 7 is connected with the inner-circle chamfer hexagonal nut 2 in interference fit through a tool after penetrating through the inner circle of the inner-circle chamfer hexagonal nut 2, and meanwhile, the end part of the connector thin-wall end 7 is exposed on the other side of the inner-chamfer hexagonal nut 2; the end of the exposed thin-walled end 7 of the joint is welded to the ring 3.

Furthermore, after the ring 3 and the metal corrugated pipe are welded, a net sleeve 6 is sleeved outside the metal corrugated pipe, and a sleeve 4 is arranged outside the net sleeve 6 at the end part of the metal corrugated pipe welded with the ring 3.

Further, the net sleeve 6 and the sleeve 4 are both welded with the circular ring 3.

Furthermore, the chamfer structure is a joint chamfer arranged on the outer edge of the end part of the joint thin-wall end 7, and meanwhile, a nut chamfer capable of being sleeved with the outer edge of the joint thin-wall end 7 in an interference fit manner is arranged on the inner edge of the inner round chamfer hexagonal nut 2.

Furthermore, the joint chamfer angle is 3-5 degrees, and the nut chamfer angle is smaller than the joint chamfer angle, so that the end part of the joint thin-wall end 7 penetrates through the inner circle of the inner circle chamfer hexagonal nut 2 and then is connected with the joint thin-wall end 7 and the inner circle chamfer hexagonal nut 2 in an interference fit manner through a tool.

The utility model also provides a corrugated metal hose 5, and the end of the corrugated metal hose 5 adopts the connection structure of the end of the corrugated metal hose 5 for avoiding torsion.

The utility model increases the inner circle chamfer angle hexagonal nut 2 structure through the special structural design, and the installation method of the utility model is as follows: drawing a line at a preset position of a connector 1, sleeving an inner circle chamfer hexagonal nut 2 on a connector thin-wall end 7, putting on a tool, pressurizing to enable the end face of the inner circle chamfer hexagonal nut 2 to be flush with the position of the drawn line on the connector 1, stopping pressurizing to achieve preset interference fit between the inner circle chamfer hexagonal nut and the connector, welding the connector matched with the inner circle chamfer hexagonal nut 2 with a welding ring 3 at the end of a corrugated metal hose 5, and finally welding a net sleeve 6 of the corrugated metal hose 5 at the position of the ring 3. The structure not only increases the clamping position of the wrench, but also does not influence the strength of the thin-walled tube, does not increase the number of welding lines, avoids increasing the risk of leakage points, and increases one leakage point because of increasing one welding line.

Example 1: as shown in figure 3, the length of the joint chamfer is 12mm, the joint chamfer is 4 degrees, the diameter size after chamfering is about 53.3mm, the thickness of the inner circle chamfer hexagonal nut is 10mm, the diameter size at the chamfer of the nut is increased by 0.2mm, namely 53.5mm, the chamfer of the nut is 3 degrees, and the interference fit can be achieved through the tool. After the cooperation is accomplished, connect 7 tip of thin-walled end and can surpass 2 terminal surfaces of interior round chamfer hexagonal nut, surpass the part and can accomplish the two-sided shaping of single face welding with ring 3, can not weld interior round chamfer hexagonal nut 2 during the welding moreover, the welding seam can act as the setpoint of hexagonal nut again.

Claims

1. The utility model provides an avoid torsional corrugated metal hose end connection structure, includes joint, ring and corrugated metal pipe, ring one end and corrugated metal pipe welding, the other end and the tip welding of joint thin wall end, its characterized in that: the outer part of the thin-wall end of the connector is sleeved with the inner circle chamfer hexagonal nut, the sleeve joint is in interference fit through a chamfer structure, the end part of the thin-wall end of the connector is positioned on the outer side of the inner circle chamfer hexagonal nut after penetrating through the inner circle chamfer hexagonal nut, and the port of the exposed thin-wall end of the connector is welded with the ring.

2. A twist-resistant corrugated metal hose end connection as claimed in claim 1, wherein: after the ring and the metal corrugated pipe are welded, a net sleeve is sleeved outside the metal corrugated pipe, and a sleeve is arranged outside the net sleeve at the end part of the metal corrugated pipe welded with the ring.

3. A twist-resistant corrugated metal hose end connection as claimed in claim 2, wherein: the net cover and the sleeve are welded with the circular ring.

4. A twist-resistant corrugated metal hose end connection as claimed in claim 1, wherein: the chamfer structure is a joint chamfer arranged on the outer edge of the end part of the joint thin-wall end, and meanwhile, a nut chamfer capable of being sleeved with the outer edge of the joint thin-wall end in an interference fit manner is arranged on the inner edge of the inner round chamfer hexagonal nut.

5. A twist-resistant corrugated metal hose end connection as claimed in claim 4, wherein: the joint chamfer angle is 3-5 degrees, and the nut chamfer angle is smaller than the joint chamfer angle.

6. A corrugated metal hose, comprising: the metal corrugated hose end head adopts the torsion-preventing metal corrugated hose end head connecting structure as claimed in any one of claims 1 to 5.