Limiting anti-pull-off rubber joint

Abstract

The utility model discloses a limiting anti-pull-off rubber joint, which relates to the technical field of rubber joints and comprises a rubber ball. The inner sides of the two ends of the rubber ball body are connected with steel bushings connected with a pipeline, and the steel bushings are connected with supporting plates. A chain is connected between the supporting plates at two ends of the rubber ball; when the rubber ball body is stretched to the limit, the chain is tensioned; the supporting plate and the chain are connected between the steel bushings at the two ends of the rubber ball body, when the rubber ball body is subjected to pipeline displacement pulling force to reach the limiting position, the chain is tensioned to bear the pipeline displacement pulling force, the rubber ball body is prevented from being pulled off and cracked, deformation of the rubber ball body is limited, tensile strength is enhanced, and internal fluid leakage is prevented; and therefore, leakage accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber joint technical field, especially in a kind of limiting anti-pulling rubber joint. BACKGROUND

[0002] Rubber flexible joint is also called rubber joint, flexible rubber joint, rubber flexible joint, shock absorber, rubber shock absorber, rubber expansion joint etc.Rubber joint is a device used for connecting pipeline system, and its main function is to compensate the displacement of pipeline and reduce vibration and noise.In the operation of pipeline, due to thermal expansion and contraction and other factors, axial (along the pipeline axis direction) displacement may occur.Rubber joint can flexibly adapt to these displacement changes within a certain range, reduce stress concentration of pipeline system, and prevent pipeline rupture, leakage and other problems.Meanwhile, it can also absorb and reduce the vibration and noise generated by the flow of medium in pipeline, so that the pipeline system runs more smoothly.

[0003] Rubber joint has flexible characteristics, and it is the weakest product in the entire pipeline system, and pulling and cracking phenomenon is prone to occur, which may cause safety accidents. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in the prior art, and provides a kind of limiting anti-pulling rubber joint.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of limiting anti-pulling rubber joint, including rubber sphere;The inner side of both ends of the rubber sphere is connected with the steel bushing connected with pipeline, and the steel bushing is connected with support plate;Chain is connected between the support plate of both ends of rubber sphere;When rubber sphere is stretched to limit, chain is tensioned.

[0007] Further, the outer side of both ends of the rubber sphere is provided with outer pressure steel sleeve;Outer pressure steel sleeve compresses the end of rubber sphere outside steel bushing.

[0008] Further, the both ends of the support plate are connected with the inner wall of steel bushing, and the chain is connected with the middle part of support plate.

[0009] Further, only one end of the support plate is connected with steel bushing;Support plate is provided with several along the circumference of steel bushing, and the number of support plate connected with steel bushing at both ends of rubber sphere is same and axially corresponding, and both ends of chain are connected with axially corresponding support plate respectively.

[0010] Further, the support plate is connected inside steel bushing.

[0011] Further, the support plate is connected outside steel bushing.

[0012] Further, opposite sides of the support plate connected with the steel bushings at two ends of the rubber sphere are connected with axially corresponding limiting bodies; when the rubber sphere is compressed to the limit, the limiting bodies at two ends of the rubber sphere abut against each other.

[0013] Further, the limiting body is in inverted U shape in cross section, and the chain passes through the inside of the limiting body.

[0014] Further, both edges of the limiting body are bent in the direction away from the center of the limiting body to form inclined portions.

[0015] Further, the limiting body is bent outward by 90 degrees at one end away from the support plate connected with the limiting body to form a U-shaped expansion portion.

[0016] Compared with the prior art, the utility model has the beneficial effects as follows:

[0017] The utility model connects the support plate and the chain between the steel bushings at two ends of the rubber sphere, when the rubber sphere is subjected to the pipeline displacement tension to the limit position, the chain is tensioned to bear the pipeline displacement tension, the rubber sphere is prevented from being pulled off and torn, the deformation amount of the rubber sphere is limited, the tensile strength is strengthened, the internal fluid is prevented from leaking, and then the occurrence of leakage accidents is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of example 1.

[0019] Figure 2 It is a structural schematic view of example 2.

[0020] Figure 3 It is a structural schematic view of example 3.

[0021] Figure 4 It is a structural schematic view of example 4.

[0022] Figure 5 It is a three-dimensional structural schematic view of the limiting body of example 4.

[0023] Figure 6 It is a side structural schematic view of the limiting body of example 4.

[0024] In the drawing: 1, rubber sphere; 2, steel bushing; 3, support plate; 4, chain; 5, outer compression steel sleeve; 6, limiting body; 61, inclined portion; 62, U-shaped expansion portion. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0026] In the description of the utility model, unless explicitly defined and limited, the terms "mounting", "connection" and "connection" that may appear should be understood broadly, for example, it can be fixed connection, or it can be integrally connected; it can be mechanical connection, or it can be electrical connection; it can be direct connection, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In the description of the utility model, it should be pointed out that, unless explicitly defined and limited, the term "provided with" that may appear should be understood broadly, for example, the object of "provided with" can be part of the body, or it can be arranged separately from the body and connected to the body, and the connection can be detachable connection, or it can be non-detachable connection. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] The utility model will be further described in detail below in combination with examples.

[0029] The specific embodiment 1 of the limiting anti-pulling rubber joint provided by the utility model:

[0030] Please refer to Figure 1 , the limiting anti-pulling rubber joint, comprising a rubber sphere 1, the rubber sphere 1 is a hollow structure with openings at both ends.

[0031] The rubber sphere 1 is connected with the steel bushing 2 connected with the pipeline at both ends, the steel bushing 2 is a cylindrical steel structure, and the steel bushing 2 extends into the inner side of the rubber sphere 1. The outer end of the steel bushing 2 is connected with the pipeline by flange bolts or welding.

[0032] The rubber sphere 1 is provided with an annular outer compression steel sleeve 5 at both ends; the outer compression steel sleeve 5 compresses the end of the rubber sphere 1 outside the steel bushing 2.

[0033] The steel bushing 2 is connected with the support plate 3, in the embodiment, the support plate 3 is located in the steel bushing 2, and both ends are connected with the inner wall of the steel bushing 2; the support plate 3 at both ends of the rubber sphere 1 is connected with the chain 4; the chain 4 is connected with the middle part of the support plate 3.

[0034] The chain 4 is connected by a plurality of chain links in sequence, the support plate 3 is provided with a through hole in the middle, and the chain links at both ends of the chain 4 pass through the through holes of the support plates 3 at both ends.

[0035] When the pipeline generates axial displacement to stretch the rubber sphere 1, the chain 4 is tensioned when the rubber sphere 1 is stretched to the limit, the chain 4 can bear the tensile force of the pipeline displacement, the tensile strength of the rubber joint is improved, the deformation amount of the rubber sphere 1 is limited, the phenomenon that the rubber sphere 1 is continuously stretched to be torn and the phenomenon that the end connection of the rubber sphere 1 is off are avoided, and then the fluid leakage in the pipeline is avoided.

[0036] In some other embodiments, a steel wire rope can be used instead of the chain 4 to be connected between the support plates 3 at both ends of the rubber sphere 1.

[0037] A specific embodiment 2 of the limiting anti-pulling-off rubber joint provided by the utility model:

[0038] Please refer to Figure 2 The difference between the embodiment and the embodiment 1 is that, in the embodiment 1, the two ends of the support plate 3 are connected with the steel bushing 2.

[0039] In the embodiment, only one end of the support plate 3 is connected with the steel bushing 2; the support plates 3 are arranged along the circumference of the steel bushing 2, the number of the support plates 3 connected with the steel bushings 2 at both ends of the rubber sphere 1 is the same and axially corresponds, and the two ends of the chain 4 are connected with the axially corresponding support plates 3 respectively.

[0040] In the embodiment, the support plate 3 is connected to the inner side of the steel bushing 2. The plurality of chains 4 bear the pipeline tensile force, and the protection failure caused by the damage of a certain chain 4 is avoided.

[0041] A specific embodiment 3 of the limiting anti-pulling-off rubber joint provided by the utility model:

[0042] Please refer to Figure 3 The difference between the embodiment and the embodiment 2 is that, in the embodiment 2, the support plate 3 and the chain 4 are located on the inner side of the steel bushing 2 and the rubber sphere 1.

[0043] In the embodiment, the support plate 3 is connected to the outer side of the steel bushing 2, and the chain 4 is located on the outer side of the rubber sphere 1. The support plate 3 and the chain 4 are both located on the outer side, and do not occupy the internal fluid flow space; the installation, maintenance and repair are more convenient.

[0044] A specific embodiment 4 of the limiting anti-pulling-off rubber joint provided by the utility model:

[0045] Please refer to Figures 4-6 The difference between the embodiment and the embodiment 1 is:

[0046] The opposite sides of the support plate 3 connected with the rubber sphere 1 through the steel bushings 2 at both ends are connected with the axially corresponding limiters 6; when the rubber sphere 1 is compressed to the limit, the limiters 6 at both ends of the rubber sphere 1 abut against each other.

[0047] When the pipeline produces axial displacement to compress the rubber sphere 1, the rubber sphere 1 cannot be continuously compressed after the limiters 6 at both ends abut against each other, the compression deformation amount of the rubber sphere 1 is limited, and the rubber sphere 1 is prevented from being extruded and damaged, thereby forming compression protection for the rubber sphere 1.

[0048] In some other embodiments, the limiter 6 is a cylindrical rod. In the embodiment, the cross section of the limiter 6 is inverted U-shaped, and the chain 4 passes through the inner side of the limiter 6 when the chain 4 is tensioned, so that the structure is compact. When the rubber sphere 1 is compressed, the limiters 6 at both ends are close to each other, and the middle part of the chain 4 is sagged, and the U-shaped limiter 6 does not affect the sagging of the middle part of the chain 4 to move out of the limiter 6.

[0049] The two edges of the limiter 6 are both bent in the direction away from the center of the limiter 6 to form inclined portions 61, and the inclined portions 61 form a tapered space, so that the chain 4 can smoothly enter the inner side of the limiter 6 when the chain 4 changes from the sagging state to the tensioned state.

[0050] The end of the limiter 6 away from the support plate 3 connected with the limiter 6 is bent outward by 90 degrees to form a U-shaped expansion portion 62; the U-shaped expansion portion 62 increases the contact area when the limiters 6 at both ends of the rubber sphere 1 abut against each other, improves the stability of the abutment, avoids misalignment and non-abutment, and ensures stable compression limiting for the rubber sphere 1.

[0051] Finally, it should be noted that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified without creative labor, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A position-limiting and anti-pull-off rubber joint, comprising a rubber ball (1); characterized in that: The inner sides of both ends of the rubber sphere (1) are connected to steel bushings (2) connected to the pipeline, and the steel bushings (2) are connected to support plates (3); a chain (4) is connected between the support plates (3) at both ends of the rubber sphere (1); and the chain (4) is tensioned when the rubber sphere (1) is stretched to its limit.

2. The position-limiting and anti-pull-off rubber joint according to claim 1, characterized in that: External pressure steel sleeves (5) are provided on the outsides of both ends of the rubber sphere (1); the external pressure steel sleeves (5) press the ends of the rubber sphere (1) tightly against the outside of the steel bushing (2).

3. The position-limiting and anti-pull-off rubber joint according to claim 1, characterized in that: Both ends of the support plate (3) are connected to the inner wall of the steel bushing (2), and the chain (4) is connected to the middle of the support plate (3).

4. The position-limiting and anti-pull-off rubber joint according to claim 1, characterized in that: Only one end of the support plate (3) is connected to the steel bushing (2); a plurality of support plates (3) are provided along the circumference of the steel bushing (2); the number of support plates (3) connected to the steel bushings (2) at both ends of the rubber sphere (1) is the same and corresponds axially; and both ends of the chain (4) are respectively connected to the support plates (3) corresponding axially.

5. The position-limiting and anti-pull-off rubber joint according to claim 4, characterized in that: The support plate (3) is connected to the inner side of the steel bushing (2).

6. The position-limiting and anti-pull-off rubber joint according to claim 4, characterized in that: The support plate (3) is connected to the outside of the steel bushing (2).

7. The position-limiting and anti-pull-off rubber joint according to claim 1, characterized in that: The opposite sides of the support plates (3) connected to the steel bushings (2) at both ends of the rubber sphere (1) are connected with axially corresponding limiters (6); when the rubber sphere (1) is compressed to the limit, the limiters (6) at both ends of the rubber sphere (1) collide with each other.

8. The position-limiting and anti-pull-off rubber joint according to claim 7, characterized in that: The cross section of the limiting body (6) is an inverted U-shape, and the chain (4) passes through the inner side of the limiting body (6).

9. The position-limiting and anti-pull-off rubber joint according to claim 8, characterized in that: Both edges of the limiting body (6) are bent in a direction away from the center of the limiting body (6) to form an inclined portion (61).

10. The position-limiting and anti-pull-off rubber joint according to claim 8, characterized in that: One end of the limiting body (6) away from the supporting plate (3) to which it is connected is bent outwards by ninety degrees to form a U-shaped extension portion (62).

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