CN220416493U - Bending fatigue resistant metal hose - Google Patents

Abstract

The utility model discloses a bending fatigue resistant metal hose which comprises a connecting joint, a corrugated pipe, a connecting sleeve ring and a protection spring, wherein a metal net sleeve is sleeved on the surface of the corrugated pipe, the connecting sleeve ring is connected with the corrugated pipe and the metal net sleeve, and the protection spring is connected with the connecting sleeve ring and sleeved on the surface of the metal net sleeve. The bending fatigue resistant metal hose provided by the utility model has the advantages of good bending fatigue resistance, good flexibility and low cost.

Description

Bending fatigue resistant metal hose

Technical Field

The utility model relates to the technical field of metal hoses, in particular to a bending fatigue resistant metal hose.

Background

The metal hose is mainly used for compensating displacement, mounting deviation, absorbing vibration and reducing noise in a pipeline, and is a very ideal flexible element. In recent years, the application of the metal hose is wider and wider in various industries, the working condition is more and more complex and harsh, so that the requirements on the metal hose are higher and higher, the common metal hose structure cannot meet the working condition requirements of some harsh conditions, particularly, the corrugated pipe of the metal hose is frequently subjected to fatigue fracture failure due to the reciprocating motion, the service life is sometimes less than one week, and the problem is the problem to be solved urgently at present.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides the bending fatigue resistant metal hose which has the advantages of good bending fatigue resistance, good flexibility and low cost.

According to the bending fatigue resistant metal hose disclosed by the embodiment of the utility model, the bending fatigue resistant metal hose comprises a connecting joint, a corrugated pipe, a connecting sleeve ring and a protection spring, wherein the surface of the corrugated pipe is sleeved with a metal net sleeve, the connecting sleeve ring is connected with the corrugated pipe and the metal net sleeve, and the protection spring is connected with the connecting sleeve ring and sleeved on the surface of the metal net sleeve.

The metal hose resistant to bending fatigue has the advantages of good bending fatigue resistance, good flexibility and low cost. The flexible bending fatigue resistance of the product is improved while the flexible performance of the product is met through reasonable optimization of the structure, and the fatigue resistance of the reciprocating frequent bending part of the metal hose is greatly improved through cooperation of the protection spring and the connecting lantern ring. In some embodiments, the connecting collars are positioned at two ends of the metal net sleeve, and the protection springs are in one-to-one correspondence with the connecting collars.

In some embodiments, one end of the protection spring is welded to an outer surface of the connection collar by intermittent welding.

In some embodiments, the inclination angles of the protection springs at the two ends of the metal mesh cover are opposite.

In some embodiments, the protection spring is a tension spring.

In some embodiments, the length of the protection spring is greater than the dynamic bending radius of the bellows.

In some embodiments, the two ends of the corrugated pipe are provided with connecting joints, and the connecting joints can be any one of loose flange, welded connection pipe, threaded joint and quick joint.

In some embodiments, the quick connector, bellows, and metal mesh are welded to the connection collar.

Drawings

Fig. 1 is a schematic structural view of a metal hose resistant to bending fatigue in accordance with an embodiment of the present utility model.

Reference numerals: 1. a quick connector; 2. a bellows; 3. a protection spring; 4. a metal net cover; 5. and a connecting collar.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

According to the bending fatigue resistant metal hose disclosed by the embodiment of the utility model, as shown in fig. 1, the bending fatigue resistant metal hose comprises a corrugated pipe 2, a connecting sleeve ring 5 and a protection spring 3, wherein a metal net sleeve 4 is sleeved on the surface of the corrugated pipe 2, the connecting sleeve ring 5 is connected with the corrugated pipe 2 and the metal net sleeve 4, and the protection spring 3 is connected with the connecting sleeve ring 5 and sleeved on the surface of the metal net sleeve 4. The corrugated pipe 2 adopts an annular metal corrugated pipe 2, and the corrugated pipe 2 is a main flexible part which can absorb vibration, compensate displacement and the like. The protection spring 3 is used for restraining and balancing the bending degree of the two ends of the corrugated pipe 2, avoiding the local excessive bending deformation and the overrun bending deformation of the annular metal corrugated pipe 2, the metal net sleeve 4 plays a role in reinforcing the corrugated pipe 2 in the circumferential direction, and meanwhile, the metal net sleeve 4 bears the blind plate force of a pipeline. The connecting lantern ring 5 strengthens and fixes the end part of the metal net sleeve 4, so that the subsequent welding and fixing are convenient. The protection spring 3 improves the bending fatigue resistance of the hose and ensures the original flexibility of the metal hose, and the product cost is controlled on the premise of ensuring the service performance with simple structure.

The metal hose resistant to bending fatigue has the advantages of good bending fatigue resistance, good flexibility and low cost. The bending fatigue resistance of the product is improved while the flexibility of the product is met through reasonable optimization of the structure, and the fatigue resistance of the reciprocating frequent bending part of the metal hose is greatly improved by matching the protection spring 3 with the connecting lantern ring 5.

In some embodiments, as shown in fig. 1, the connecting collars 5 are positioned at two ends of the metal net cover 4, and the protection springs 3 are in one-to-one correspondence with the connecting collars 5.

Specifically, connect lantern ring 5 cover to establish in the both ends of metal wire cover 4, every connect lantern ring 5 and bellows 2 and metal wire cover 4 welded fastening together, metal wire cover 4 is the steel wire net cover, protection spring 3 corresponds the setting with connecting lantern ring 5, two protection springs 3 set up respectively at the both ends of metal wire cover 4, the total length of protection spring 3 is less than metal wire net cover 4 length and can reduce protection spring 3 cost.

In some embodiments, as shown in fig. 1, one end of the protection spring 3 is welded to the outer surface of the connection collar 5 by intermittent welding.

Specifically, the protection spring 3 is rooted on the outer surface of the connecting lantern ring 5 through intermittent welding, so that the reserved deformation space of welding materials can be saved.

In some embodiments, as shown in fig. 1, the inclination angles of the protection springs 3 at both ends of the metal mesh cover 4 are opposite.

Specifically, the inclination angle of the protection spring 3 is related to the bending direction of the corrugated tube 2, the bending directions of the two ends of the corrugated tube 2 are different, and the protection springs 3 with opposite inclination angles are selected to be more suitable for balancing the bending degree to avoid overrun deformation.

In some embodiments, as shown in fig. 1, the protection spring 3 is a tension spring.

Specifically, a tension spring is selected as the protection spring 3, when the two ends of the metal hose are straight and not bent, the length of the protection spring 3 has minimal influence on the corrugated pipe 2, and when the corrugated pipe 2 is bent and deformed, the tension spring is pushed by the inner metal net sleeve 4 and the corrugated pipe 2 to deform, and the tension spring can inhibit the deformation of the hose.

In some embodiments, the length of the protection spring 3 is greater than the dynamic bending radius of the bellows 2.

Specifically, the length of the protection spring 3 is greater than the dynamic bending radius of the bellows 2 and the protection spring 3 has a certain flexibility, and bending of the protection spring 3 along with the bellows 2 does not affect the bending performance of the bellows 2 as a whole.

In some embodiments, as shown in fig. 1, the two ends of the bellows 2 are provided with connection joints, which may be any one of loose flange, welded connection pipe, screw joint, and quick joint.

Specifically, the quick connector can be a pull rod type quick connector, and the pull rod type quick connector 1 is used for connecting a pipeline with equipment, so that the quick connector is convenient to detach and install, and the convenience of hose use is guaranteed.

In some embodiments, as shown in fig. 1, the pull rod type quick connector 1 comprises a connector piece and a pair of wing type overturning pull rods, and a pull ring is arranged at one end of the pull rod away from the connector piece.

Specifically, wing-type overturning pull rods are arranged on two sides of the connector, one end, adjacent to the connector, of each pull rod is provided with an eccentric cam, the pull rods on two sides are pressed down, and the cam forces the inserting shaft of the connector to sink to contact the sealing gasket to realize braking. The pull ring is penetrated at one end of the pull rod far away from the joint piece so as to be convenient for pulling the pull rod.

In some embodiments, the quick connector 1 is welded to the bellows and the metal mesh.

Specifically, the quick connector is welded and fixed with the connecting lantern ring 5 and the corrugated pipe 2, and the metal net sleeve is abutted with the quick connector.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (8)

1. A metal hose resistant to bending fatigue, comprising:

the corrugated pipe is sleeved with a metal net sleeve on the surface;

the connecting lantern ring is connected with the corrugated pipe and the metal net sleeve;

the protection spring is connected with the connecting sleeve ring and sleeved on the surface of the metal net sleeve.

2. The bending fatigue resistant metal hose according to claim 1, wherein said connection collars are located at both ends of said metal mesh cover, and said protection springs are in one-to-one correspondence with said connection collars.

3. The bending fatigue resistant metal hose according to claim 2, wherein one end of the protection spring is welded to the outer surface of the connection collar by intermittent welding.

4. The bending fatigue resistant metal hose according to claim 2, wherein the inclination angles of the protection springs at both ends of the metal mesh cover are opposite.

5. The bending fatigue resistant metal hose according to claim 1, wherein the protection spring is a tension spring.

6. The bending fatigue resistant metal hose according to claim 1, wherein the length of the protection spring is greater than the dynamic bending radius of the bellows.

7. The bending fatigue resistant metal hose according to claim 1, wherein the corrugated tube is provided at both ends with connection joints, which may be any one of loose flange, welded connection pipe, screw joint and quick connector.

8. The bending fatigue resistant metal hose according to claim 7, wherein said quick connector is welded to said connection collar, bellows and metal mesh.