Compound hinge corrugated pipe compensator

Abstract

The utility model relates to a compound hinge corrugated pipe compensator, which comprises a protective sleeve sleeved on the periphery of a corrugated pipe, and is characterized in that the protective sleeve comprises a first shell and a second shell, the first shell and the second shell are sleeved on the periphery of the corrugated pipe, one end of the first shell is connected with an end pipe at one end of the compensator, and the other end of the first shell is connected with an end pipe at the other end of the compensator. The second shell is connected with an end pipe at the other end of the compensator, the other end of the first shell is rotationally connected into the second shell, and the outer side wall of the first shell is attached to the inner side wall of the second shell. Due to the adoption of the technical scheme, when the compound hinge corrugated pipe compensator disclosed by the utility model is used for carrying out angular displacement compensation on a pipeline, soil does not easily reach the space between the concave parts of the corrugated pipe, so that the possibility that the corrugated pipe is difficult to bend normally due to the fact that the soil is propped against the concave parts is reduced to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of corrugated compensator technology, specifically to a compound hinged corrugated pipe compensator. Background Technology

[0002] The double-hinged bellows compensator consists of components such as a metal bellows, hinge structure, end pipe and tie rod. It is connected to the pipeline through the hinge shaft and can absorb the angular displacement of the pipeline in a single plane or multiple planes, and has a certain lateral compensation capability.

[0003] When compensating for angular displacement of a pipeline, the bellows bends in the direction of the pipeline under stress. When the double-hinged bellows compensator is buried underground, soil and impurities may accumulate in the concave part of the bellows due to ground subsidence. The soil and impurities resist the concave part, which restricts the bending of the bellows and affects the use of the double-hinged bellows compensator to a certain extent. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a double-hinged bellows compensator to solve the problem that when the double-hinged bellows compensator is buried underground, soil and impurities may accumulate in the depression of the bellows due to ground subsidence. The soil and impurities pressing against the depression restrict the bending of the bellows, which to some extent affects the use of the double-hinged bellows compensator.

[0005] This utility model is achieved through the following technical solution:

[0006] A compound hinged bellows compensator includes a protective sleeve fitted around the outer periphery of the bellows. The protective sleeve comprises a first housing and a second housing, both fitted around the outer periphery of the bellows. One end of the first housing is connected to an end tube at one end of the compensator, and the second housing is connected to an end tube at the other end of the compensator. The other end of the first housing is rotatably connected inside the second housing, and the outer sidewall of the first housing is in contact with the inner sidewall of the second housing.

[0007] Furthermore, the second housing gradually thins from the edge to the end where it connects to the first housing, forming a first cutting edge at the end where the second housing connects to the first housing.

[0008] Furthermore, a rotating shaft is connected to the outer side of the first housing, and the rotating shaft is arranged along the rotation center line of the first housing. A shaft hole is formed by an inward recess on the inner side of the second housing, and the rotating shaft is rotatably fitted into the shaft hole.

[0009] Furthermore, it also includes a first sleeve and a second sleeve, the first sleeve being connected to the end of the second housing that is not connected to the first housing, the second sleeve being connected to the end tube of the other end of the compensator, and the outer side wall of the second sleeve being slidably fitted to the inner side wall of the first sleeve.

[0010] Furthermore, the outer edge of the first sleeve at the end opposite to the second housing is inclined toward the second housing and has a second cutting edge.

[0011] Furthermore, a lubricating grease is provided between the first housing and the second housing.

[0012] Furthermore, the second housing has a hollow cavity for containing grease. The cavity has an opening extending through one side wall of the first housing, which connects the interior of the cavity and the inner side wall of the second housing. The housing also includes a pushing part that engages with the cavity and pushes the grease through the opening.

[0013] Furthermore, the pushing part includes a push plate and a spring. The push plate is slidably fitted inside the receiving cavity, and the two ends of the spring are respectively connected to the push plate and a side wall of the receiving cavity without an opening.

[0014] The beneficial effects of this utility model are as follows:

[0015] When using the compound hinged bellows compensator of this utility model to compensate for angular displacement of a pipeline, soil is less likely to reach the recessed parts of the bellows, which to a certain extent reduces the possibility that soil will be held against the recessed parts, making it difficult for the bellows to bend normally.

[0016] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a compound hinged bellows compensator according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the transverse structure of a compound hinged bellows compensator according to this utility model.

[0019] Figure 3 This is a longitudinal structural cross-sectional view of a compound hinged bellows compensator according to this utility model.

[0020] Figure 4 for Figure 3 A magnified view of part A in the image.

[0021] In the diagram: 11. First housing; 12. Second housing; 21. First cutting edge; 22. Second cutting edge; 3. Rotating shaft; 41. First sleeve; 42. Second sleeve; 5. Receiving cavity; 6. Opening; 7. Push plate; 8. Spring; 91. Pipe; 92. Bellows; 93. End tube; Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a compound hinged bellows compensator, including a protective sleeve fitted around the outer periphery of the bellows 92, characterized in that: the protective sleeve includes a first shell 11 and a second shell 12, both the first shell 11 and the second shell 12 are fitted around the outer periphery of the bellows 92, one end of the first shell 11 is connected to the end tube 93 of one end of the compensator, the second shell 12 is connected to the end tube 93 of the other end of the compensator, the other end of the first shell 11 is rotatably connected inside the second shell 12, and the outer side wall of the first shell 11 is in contact with the inner side wall of the second shell 12.

[0024] When using the compound hinged bellows 92 compensator of this utility model to compensate for the angular displacement of the pipe 91, since both the first shell 11 and the second shell 12 are sleeved on the outer periphery of the bellows 92, one end of the first shell 11 is connected to the end pipe 93 at one end of the compensator, and the second shell 12 is connected to the end pipe 93 at the other end of the compensator. Furthermore, the outer wall of the first shell 11 is in close contact with the inner wall of the second shell 12, preventing dirt and impurities from reaching the recessed position of the bellows 92 and restricting its bending. When the bellows 92 bends, it will cause the two ends of the compensator to bend. When the end tube 93 of the compensator deviates at an angle, since one end of the first housing 11 is connected to the end tube 93 of the compensator at one end, and the second housing 12 is connected to the end tube 93 of the compensator at the other end, and the other end of the first housing 11 is rotatably connected to the second housing 12, and the outer side wall of the first housing 11 is in contact with the inner side wall of the second housing 12, when the end tubes 93 at both ends of the compensator deviate at an angle, the first housing 11 and the second housing 12 will rotate relative to each other, thereby causing the protective sleeve to bend, so that the bending angle of the protective sleeve can be adapted to the bending angle of the bellows 92.

[0025] With this structure, when using the compound hinged bellows 92 compensator of this utility model to compensate for the angular displacement of the pipe 91, the soil is less likely to reach the recessed parts of the bellows 92, which to a certain extent reduces the possibility that the soil will be held against the recessed parts, making it difficult for the bellows 92 to bend normally.

[0026] In this embodiment: the end of the second housing 12 connected to the first housing 11 gradually thins towards the edge, and a first cutting edge 21 is formed at the end of the second housing 12 connected to the first housing 11. With this structure, the second housing 12 is more easily rotated when pushed by the end tube 93 of the compensator.

[0027] In this embodiment: the outer side of the first housing 11 is connected to a rotating shaft 3, the rotating shaft 3 is arranged along the rotation center line of the first housing 11, and the inner side of the second housing 12 is recessed to form a shaft hole, the rotating shaft 3 is rotatably fitted into the shaft hole. With this structure, the first housing 11 is not easy to detach from the second housing 12 when it is stretched.

[0028] In this embodiment, a first sleeve 41 and a second sleeve 42 are also included. The first sleeve 41 is connected to the end of the second housing 12 that is not connected to the first housing 11, and the second sleeve 42 is connected to the end pipe of the other end of the compensator. The outer side wall of the second sleeve 42 is slidably fitted to the inner side wall of the first sleeve 41. When the double-hinged bellows compensator 92 of this utility model is stretched or shortened by the pipe 91, the first sleeve 41 and the second sleeve 42 can slide relative to each other to compensate for the expansion and contraction of the pipe 91 in the length direction.

[0029] In this embodiment, the outer edge of the first sleeve 41 facing away from the second housing 12 is inclined toward the second housing 12 and has a second cutting edge 22. With this structure, the first sleeve 41 slides more smoothly toward the second sleeve 42.

[0030] In this embodiment, a lubricant is provided between the first housing 11 and the second housing 12. Applying the lubricant between the first housing 11 and the second housing 12 can make the relative rotation of the first housing 11 and the second housing 12 smoother.

[0031] In this embodiment: the second housing 12 has a hollow cavity 5 for containing grease. The cavity 5 has an opening 6 through one side wall of the cavity 5 facing the first housing 11. The opening 6 connects the interior of the cavity 5 and the inner side wall of the second housing 12. It also includes a pushing part that fits into the cavity 5 and is used to push the grease in the cavity 5 through the opening 6.

[0032] First, grease is injected into the receiving cavity 5. Then, the first housing 11 is pushed so that its outer wall fits against the inner wall of the second housing 12, sealing the opening 6. This prevents the grease in the receiving cavity 5 from being squeezed out of the opening 6 by the pushing part. When the second housing 12 rotates relative to the first housing 11, the grease at the opening 6 can be applied to the outer wall of the first housing 11, allowing the grease to remain continuously between the first housing 11 and the second housing 12. With this structure, the first housing 11 and the second housing 12 can be continuously lubricated.

[0033] In this embodiment: the pushing part includes a push plate 7 and a spring 8. The push plate 7 is slidably fitted inside the receiving cavity 5. The two ends of the spring 8 are respectively connected to the push plate 7 and the side wall of the receiving cavity 5 without an opening 6. When grease is injected onto the side of the push plate 7 facing the opening 6 inside the receiving cavity 5, the injected grease pushes the push plate 7, causing the spring 8 to compress. When the first housing 11 and the second housing 12 rotate, the grease is consumed. The spring 8 pushes the push plate 7 to move, so that the grease in the receiving cavity 5 can continuously reach the opening 6. With this structure, the pushing part can be used to push the grease in the receiving cavity 5 through the opening 6.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A compound hinged bellows compensator, comprising a protective sleeve fitted around the outer periphery of the bellows (92), characterized in that: The protective sleeve includes a first housing (11) and a second housing (12). The first housing (11) and the second housing (12) are both fitted around the outer periphery of the corrugated pipe (92). One end of the first housing (11) is connected to the end tube (93) of one end of the compensator, and the second housing (12) is connected to the end tube (93) of the other end of the compensator. The other end of the first housing (11) is rotatably connected inside the second housing (12), and the outer side wall of the first housing (11) is in contact with the inner side wall of the second housing (12).

2. The compound hinged bellows compensator according to claim 1, characterized in that: The second housing (12) is connected to the first housing (11) at one end, and the housing gradually thins towards the edge, forming a first cutting edge (21) at the end of the second housing (12) connected to the first housing (11).

3. The compound hinged bellows compensator according to claim 1, characterized in that: The outer side of the first housing (11) is connected to a rotating shaft (3), which is arranged along the rotation center line of the first housing (11). The inner side of the second housing (12) is recessed inward to form a shaft hole, and the rotating shaft (3) is rotatably fitted into the shaft hole.

4. A compound hinged bellows compensator according to claim 1, characterized in that: It also includes a first sleeve (41) and a second sleeve (42), the first sleeve (41) being connected to the end of the second housing (12) not connected to the first housing (11), the second sleeve (42) being connected to the end tube (93) of the other end of the compensator, and the outer side wall of the second sleeve (42) being slidably fitted to the inner side wall of the first sleeve (41).

5. A compound hinged bellows compensator according to claim 4, characterized in that: The outer edge of the first sleeve (41) facing away from the second housing (12) is inclined toward the second housing (12) and has a second cutting edge (22).

6. A compound hinged bellows compensator according to claim 1, characterized in that: A lubricating grease is provided between the first housing (11) and the second housing (12).

7. A compound hinged bellows compensator according to claim 6, characterized in that: The second housing (12) has a hollow cavity (5) for containing grease. The cavity (5) has an opening (6) through one side wall of the cavity (5) facing the first housing (11). The opening (6) connects the interior of the cavity (5) and the inner side wall of the second housing (12). The second housing (12) also includes a pushing part that fits into the cavity (5) and is used to push the grease in the cavity (5) through the opening (6).

8. A compound hinged bellows compensator according to claim 7, characterized in that: The pushing part includes a push plate (7) and a spring (8). The push plate (7) is slidably fitted inside the receiving cavity (5). The two ends of the spring (8) are respectively connected to the push plate (7) and the side wall of the receiving cavity (5) without an opening (6).

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