A steel-in-steel pipe coupling device

Abstract

The utility model provides a kind of steel sleeve steel pipeline connecting device, including fixed ring and several connecting mechanisms, fixed ring is sleeved on inner tube, fixed ring connects several connecting mechanisms, connecting mechanism includes adjusting frame, adjusting plate and gyro wheel, the outside wall of fixed ring is connected adjusting frame, several first adjusting holes are opened on adjusting frame, several second adjusting holes are opened on adjusting plate, first adjusting hole and second adjusting hole are adapted, adjusting frame is connected adjusting plate by several plug-in parts disassembly, first adjusting hole and second adjusting hole are used to connect plug-in part, adjusting plate is rotatably connected gyro wheel at one end of adjusting frame, gyro wheel abuts outer tube. By setting several connecting mechanisms to abut the inner wall of outer tube, the installation position of inner tube is centered, it is convenient to quickly adapt to the size of outer tube, adapt deformation amount, substantially reduce the occurrence of water leakage phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of water supply and drainage construction technology, and in particular to a steel-jacketed steel pipe connection device. Background Technology

[0002] In the construction of municipal water supply and drainage pipelines, steel-clad steel pipes are often used. This type of pipe has advantages such as high pressure resistance, environmental reliability, and resistance to leakage due to external forces.

[0003] Conventional steel-jacketed pipe construction involves welding a ring-shaped fixing device inside the outer pipe, with the inner pipe passing through the ring-shaped fixing device and then welding it.

[0004] However, existing ring-shaped fixing devices require the inner tube to pass through, and their diameter is slightly larger than that of the inner tube, making it difficult to center the inner tube and resulting in slow construction speed and low installation efficiency. At the same time, due to complex environments, such as at the expansion joints of bridges or in areas prone to vibration, the deformation of the inner and outer tubes is different, which can easily lead to cracking and leakage at the weld joints of the inner tube. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a steel-jacketed steel pipe connection device, which aims to solve the problems of difficulty in centering the inner pipe during installation and low installation efficiency, and the easy occurrence of inner pipe cracking due to different deformation of the inner and outer pipes in complex situations.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A steel-jacketed steel pipe connection device includes a fixing ring and several connecting mechanisms. The fixing ring is sleeved on an inner pipe. The outer side wall of the fixing ring is connected to several connecting mechanisms. Each connecting mechanism includes an adjusting frame, an adjusting plate, and rollers. The outer side wall of the fixing ring is connected to the adjusting frame. The adjusting frame has several first adjusting holes, and the adjusting plate has several second adjusting holes. The first adjusting holes and the second adjusting holes are adapted to each other. The adjusting frame is detachably connected to the adjusting plate through several plug-in connectors. Both the first adjusting holes and the second adjusting holes are used to connect the plug-in connectors. The end of the adjusting plate facing away from the adjusting frame is rotatably connected to the rollers, and the rollers abut against the inner side wall of the outer pipe.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting several connecting mechanisms to abut against the inner wall of the outer tube, the installation position of the inner tube is centered. Through the adjusting frame, the adjusting plate, and the plug-in, the relative position between the adjusting frame and the adjusting plate can be easily adjusted, thereby changing the total length of the connecting mechanism, which facilitates quick adaptation to the size of the outer tube. The installation process is modular and highly efficient. By setting the rollers, after the steel-cased steel pipe connecting device is installed on the inner tube, the inner tube can be pushed into the outer tube together with the steel-cased steel pipe connecting device, thus completing the positioning of the inner tube without welding. When the outer tube undergoes a certain deformation, the rollers generate a small amount of rolling, which helps to adapt to and alleviate the deformation. Moreover, when the rollers roll, they preferentially affect the fixing ring. The fixing ring and the inner tube are not connected by welding, thereby reducing damage to the inner tube body and significantly reducing the occurrence of water leakage.

[0009] Furthermore, the adjusting frame includes a first fixing plate, a second fixing plate, and a third fixing plate. One side of the first fixing plate is connected to the fixing ring, and both ends of the first fixing plate are respectively connected to the second fixing plate and the third fixing plate. The second fixing plate and the third fixing plate are arranged opposite to each other, and the adjusting plate is connected between the second fixing plate and the third fixing plate.

[0010] Furthermore, the first adjustment hole is located on the second fixing plate, and a plurality of third adjustment holes are provided on the third fixing plate. The third adjustment holes are arranged opposite to the first adjustment hole, the first adjustment hole passes through the second fixing plate, and the third adjustment holes pass through the third fixing plate.

[0011] Furthermore, the second adjustment hole penetrates through the adjustment plate, and the plurality of second adjustment holes are evenly spaced apart.

[0012] Furthermore, the number of connecting mechanisms is four, and the included angle between adjacent connecting mechanisms is a right angle.

[0013] Furthermore, the adjustment plate is provided with a frame plate on each of its opposite sides, and the two frame plates are rotatably connected to the roller, the rolling direction of the roller being consistent with the axial direction of the outer tube.

[0014] Furthermore, the fixing ring includes a first half-ring and a second half-ring disposed opposite to each other, with the first half-ring being detachably connected to the second half-ring.

[0015] Furthermore, the two ends of the first half-ring are respectively connected to the first connecting part, and the two ends of the second half-ring are respectively connected to the second connecting part. The first connecting part is provided with a first connecting hole that penetrates through the first connecting part. The second connecting part is provided with a second connecting hole that penetrates through the second connecting part. The first connecting hole and the second connecting hole are detachably connected by a connector. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the steel-jacketed steel pipe connection device, outer pipe, and inner pipe in an embodiment of this utility model;

[0017] Figure 2 This is a first-view structural schematic diagram of the steel-jacketed steel pipe connection device in an embodiment of this utility model;

[0018] Figure 3 This is a second-view structural schematic diagram of the steel-jacketed steel pipe connection device in an embodiment of this utility model;

[0019] Explanation of key component symbols:

[0020] fixed ring 100 first half ring 110 first connecting part 111 second half ring 120 second connecting part 121 connecting piece 130 adjusting frame 200 first fixed plate 210 second fixed plate 220 first adjusting hole 221 third fixed plate 230 third adjusting hole 231 plug-in piece 240 adjusting plate 300 second adjusting hole 310 frame plate 320 rotating shaft 321 roller 400 inner tube 500 outer tube 600

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 3 The steel-jacketed steel pipe connection device in this embodiment of the present invention includes a fixing ring 100 and several connecting mechanisms. The fixing ring 100 is sleeved on the inner pipe 500. The fixing ring 100 includes a first half-ring 110 and a second half-ring 120 arranged opposite to each other. The first half-ring 110 is detachably connected to the second half-ring 120. The two ends of the first half-ring 110 are respectively connected to a first connecting part 111. The two ends of the second half-ring 120 are respectively connected to a second connecting part 121. A first connecting hole is provided on the first connecting part 111, and the first connecting hole penetrates the first connecting part 111. A second connecting hole is provided on the second connecting part 121, and the second connecting hole penetrates the second connecting part 121. The first connecting hole and the second connecting hole are detachably connected by a connector 130. Preferably, the fixing ring 100 is a metal clamp, and the connector 130 is a bolt. Understandably, the fixing ring 100 is connected to the inner pipe 500 without welding. When the steel-cased steel pipe connection device is affected by deformation, the pipe body will not break and leak due to the failure of the welding point or weld. This helps to reduce the occurrence of water leakage. Moreover, the detachable installation method is more flexible. The first half ring 110 and the second half ring 120 can be assembled close to the inner pipe 500, avoiding the problem in the traditional installation method where the diameter of the ring is slightly larger than the diameter of the inner pipe 500 in order to allow the inner pipe 500 to pass through the ring fixing device, which makes it difficult to center the installation.

[0026] The outer wall of the fixing ring 100 is connected to several connecting mechanisms, with a total of four connecting mechanisms. The included angle between adjacent connecting mechanisms is a right angle. Each connecting mechanism includes an adjusting frame 200, an adjusting plate 300, and a roller 400. The outer wall of the fixing ring 100 is connected to the adjusting frame 200. The adjusting frame 200 includes a first fixing plate 210, a second fixing plate 220, and a third fixing plate 230. One side of the first fixing plate 210 is connected to the fixing ring 100, and the two ends of the first fixing plate 210 are respectively connected to the second fixing plate 220 and the third fixing plate 230. The second fixing plate 220 and the third fixing plate 230 are disposed opposite to each other. The adjusting plate 300 is connected between the second fixing plate 220 and the third fixing plate 230. The adjusting frame 200 has a plurality of first adjusting holes 221, which are located on the second fixing plate 220. The third fixing plate 230 has a plurality of third adjusting holes 231, which are disposed opposite to the first adjusting holes 221. The first adjusting holes 221 penetrate the second fixing plate 220, and the third adjusting holes 231 penetrate the third fixing plate 230. It can be understood that the plurality of connecting mechanisms are symmetrically arranged around the center of the fixing ring 100 to form a cross shape, which is beneficial to centering the fixing ring 100 and the inner tube 500 within the outer tube 600.

[0027] The adjusting plate 300 has several second adjusting holes 310. The first adjusting hole 221 is adapted to the second adjusting hole 310. The second adjusting hole 310 passes through the adjusting plate 300. The several second adjusting holes 310 are evenly spaced. The adjusting frame 200 is detachably connected to the adjusting plate 300 through several plug-in pieces 240. Both the first adjusting hole 221 and the second adjusting hole 310 are used to connect the plug-in pieces 240. The end of the adjusting plate 300 facing away from the adjusting frame 200 is rotatably connected to the roller 400. The roller 400 abuts against the inner sidewall of the outer tube 600. Specifically, the adjusting plate 300 has a support plate 320 on each of its opposite sides. The roller 400 is rotatably connected between the two support plates 320. The rolling direction of the roller 400 is consistent with the axial direction of the outer tube 600. Preferably, the connector 240 passes through the first adjustment hole 221, the second adjustment hole 310, and the third adjustment hole 231 to detachably connect the adjustment frame 200 and the adjustment plate 300. The connector 240 is a pin, and there are two connectors 240. After determining the position of the adjustment plate 300 between the second fixing plate 220 and the third fixing plate 230, it is fixed by the two connectors 240, ensuring a stable connection and preventing damage to the adjustment frame 200 and the adjustment plate 300. The frame 200 is U-shaped, which helps to make the connection between the frame 200 and the adjusting plate 300 more stable. A pivot hole is provided on the plate 320, and a pivot 321 is installed in the pivot hole to rotatably connect the roller 400. The total length of the connecting mechanism is adjusted according to the dimensions of the inner tube 500 and the outer tube 600. After the fixing ring 100 and several connecting mechanisms are installed on the inner tube 500, the roller 400 can rotate freely. The inner tube 500 is moved axially relative to the outer tube 600, pushing the inner tube 500 and the steel-cased steel pipe connecting device together into the outer tube 600. This completes the centered installation of the inner tube 500. The installation process is efficient, requiring no extensive welding and avoiding the risk of damage to the pipe body caused by welding to fix the inner tube 500 and the outer tube 600. When the outer tube 600 deforms under stress, for example, if the outer tube 600 becomes concave, the roller 400 adapts to the amount of deformation. A small amount of rolling displacement occurs on the inner wall of the outer tube 600, changing the contact position with the outer tube 600. This causes the connecting mechanism and the fixing ring 100 to twist to a certain extent. Since the connecting mechanism and the fixing ring 100 have multiple disassembly and connection points, and the fixing ring 100 has a certain degree of toughness, it has a certain effect on mitigating deformation. Furthermore, there are no welding points between the fixing ring 100 and the inner tube 500, which effectively prevents the welding points from damaging the inner tube 500 and causing water leakage.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steel-jacketed steel pipe connection device, characterized in that, The device includes a fixed ring and several connecting mechanisms. The fixed ring is sleeved on the inner tube. The outer side wall of the fixed ring is connected to several connecting mechanisms. Each connecting mechanism includes an adjusting frame, an adjusting plate, and rollers. The outer side wall of the fixed ring is connected to the adjusting frame. The adjusting frame has several first adjusting holes, and the adjusting plate has several second adjusting holes. The first adjusting holes and the second adjusting holes are adapted to each other. The adjusting frame is detachably connected to the adjusting plate through several plug-in connectors. Both the first adjusting holes and the second adjusting holes are used to connect the plug-in connectors. The end of the adjusting plate facing away from the adjusting frame is rotatably connected to the rollers, and the rollers abut against the inner side wall of the outer tube.

2. The steel-jacketed steel pipe connection device according to claim 1, characterized in that, The adjusting frame includes a first fixing plate, a second fixing plate, and a third fixing plate. One side of the first fixing plate is connected to the fixing ring, and both ends of the first fixing plate are respectively connected to the second fixing plate and the third fixing plate. The second fixing plate and the third fixing plate are arranged opposite to each other, and the adjusting plate is connected between the second fixing plate and the third fixing plate.

3. The steel-jacketed steel pipe connection device according to claim 2, characterized in that, The first adjustment hole is located on the second fixing plate, and a plurality of third adjustment holes are provided on the third fixing plate. The third adjustment holes are arranged opposite to the first adjustment hole. The first adjustment hole passes through the second fixing plate, and the third adjustment holes pass through the third fixing plate.

4. The steel-jacketed steel pipe connection device according to claim 1, characterized in that, The second adjustment hole penetrates the adjustment plate, and the plurality of second adjustment holes are evenly spaced apart.

5. The steel-jacketed steel pipe connection device according to claim 1, characterized in that, The number of connecting mechanisms is four, and the included angle between adjacent connecting mechanisms is a right angle.

6. The steel-jacketed steel pipe connection device according to claim 1, characterized in that, The adjustment plate has a frame plate on each of its opposite sides, and the two frame plates are rotatably connected to the roller, the rolling direction of the roller is consistent with the axial direction of the outer tube.

7. The steel-jacketed steel pipe connection device according to claim 1, characterized in that, The fixing ring includes a first half-ring and a second half-ring arranged opposite to each other, and the first half-ring is detachably connected to the second half-ring.

8. The steel-jacketed steel pipe connection device according to claim 7, characterized in that, The first half-ring is connected to a first connecting part at both ends, and the second half-ring is connected to a second connecting part at both ends. A first connecting hole is provided on the first connecting part and the first connecting hole passes through the first connecting part. A second connecting hole is provided on the second connecting part and the second connecting hole passes through the second connecting part. The first connecting hole and the second connecting hole are detachably connected by a connector.

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