Device for assisting in laying casing pipe and casing pipe transferring structure

Abstract

The utility model provides an auxiliary casing pipe laying device and a casing pipe transferring structure. The auxiliary casing pipe laying device comprises a binding belt, a bull eye wheel and a binding lock catch. The bullseye wheel is fixedly or detachably connected to the binding belt, and in the binding state, the bullseye wheel forms two pulleys at the bottom of the sleeve; and the binding lock catch is used for binding and fixing the binding belt on the outer side of the sleeve. The device for assisting in laying the casing pipe and the casing pipe transferring structure have the advantages of protecting the safety of the casing pipe and being suitable for casing pipes of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline engineering construction, in particular to a device for assisting in laying casing pipes. Background Art

[0002] In actual construction, laying pipelines across roads often requires the addition of casing. Reinforced concrete protective pads are typically placed between the casings, requiring the use of an excavator to push and lay the casings. This method of laying casings creates high friction, making construction difficult and prone to breaking the reinforced concrete protective pads, resulting in failure to achieve the required casing spacing. This can also easily scratch the anti-corrosion layer on inner pipes requiring corrosion protection, potentially failing to meet the required corrosion protection standards.

[0003] Existing patents such as CN209146490U, a utility model patent for a pulley device for laying casing, utilize a pulley device welded on a steel casing as a casing laying support pad, solving the problem that the pipeline laying operation is complicated and cannot protect the inner casing. However, the device can only be used for pipes with an outer casing diameter greater than 800 mm and made of steel pipe. It is not applicable to casings with smaller diameters or casings made of materials other than steel pipes.

[0004] In order to improve adaptability, a new solution needs to be designed for the laying of casing, which can not only protect the casing but also adapt to the specifications of various casings. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a device for assisting in laying casings, which can protect the casings safely and is suitable for casings of different models.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a device for assisting the laying of casing, comprising a binding belt, a bull's eye wheel and a binding lock;

[0007] The bull's eye wheel is fixedly or detachably connected to the binding belt. In the binding state, the bull's eye wheel forms two pulleys at the bottom of the casing;

[0008] The binding lock buckle is used to bind and fix the binding belt to the outside of the sleeve.

[0009] Preferably, the binding belt is made of nylon.

[0010] Preferably, the bull's eye wheel includes a base and a roller part, the base is a square metal sheet, an assembly hole is provided on the square metal sheet, corresponding mounting holes are provided at corresponding positions of the binding belt, and the square metal sheet is installed on the binding belt by bolts.

[0011] Preferably, the bull's eye wheel includes a base and a roller portion, the base is a square metal sheet, and the back side of the square metal sheet is fixed to the binding belt by gluing.

[0012] Preferably, the bull's eye wheel includes a base and a roller portion, the base is a slider with a rectangular narrow opening, the binding belt is arranged through the slider, and the position of the bull's eye wheel relative to the binding belt is adjustable.

[0013] Preferably, the width of the binding belt is ≥25 cm.

[0014] Preferably, the length of the binding belt is ≥6m.

[0015] A casing transfer structure includes an outer protective tube, an inner casing and a device for auxiliary casing laying, at least two of the devices for auxiliary casing laying are installed outside the inner casing, the inner casing is passed through the outer protective tube, and the bull's eye wheel is supported on the inner wall of the outer protective tube.

[0016] Preferably, an anti-corrosion layer is provided on the outer side of the inner sleeve.

[0017] Preferably, the inner sleeve is made of high-density polyethylene pipe SDR11 series.

[0018] Compared with the prior art, the present invention has substantial characteristics and progress. Specifically, the present invention uses a strapping belt as the binding and fixing structure of the inner sleeve, the purpose of which is to relatively fix the bull's eye wheel and the inner sleeve, and then support the movement of the inner sleeve in the outer protective tube by the bull's eye wheel, thereby preventing excessive friction between the inner sleeve and the outer protective tube, protecting the structural safety of the inner sleeve, especially damage to the external coating; since the inner sleeve is bound in the form of a strapping belt, the binding diameter can be adjusted in a large range, and can be applicable to a variety of different types of sleeve structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a device for assisting in laying casing in Example 1 of the present utility model.

[0020] Figure 2 It is a cross-sectional view of the sleeve transfer structure in Example 2 of the present utility model.

[0021] In the figure: 1. Binding strap; 2. Bull's eye wheel; 3. Binding lock; 4. Outer protective tube; 5. Inner sleeve; 21. Base; 22. Roller; 23. Assembly hole. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, a device for assisting in laying casing comprises a binding belt 1, a bull's eye wheel 2 and a binding lock 3.

[0025] The bull's eye wheel 2 is fixedly or detachably connected to the binding belt 1. In the binding state, the bull's eye wheel 2 forms two pulleys at the bottom of the sleeve. In this embodiment, the sleeve is provided with an inner sleeve.

[0026] The binding buckle 3 is used to bind and fix the binding belt 1 to the outside of the sleeve. The preferred material of the binding belt is nylon, and it can also be a steel belt doped with other steel materials.

[0027] The width of the binding belt is ≥25 cm, and the length of the binding belt is ≥6 m.

[0028] In this embodiment, the bull's eye wheel 2 includes a base 21 and a roller portion 22. The base 21 is a square metal sheet with an assembly hole 23 provided on the square metal sheet. Corresponding mounting holes are provided at corresponding positions of the binding belt 1. The square metal sheet is mounted on the binding belt by bolts, and the nut side of the bolt is as flat as possible to avoid excessive damage to the outer coating structure of the sleeve.

[0029] In other embodiments, the base of the bull's eye wheel can also be a square metal sheet, and the back of the square metal sheet is fixed to the binding belt by gluing. This gluing method can prevent the metal hard structure from directly contacting the outer wall of the sleeve, but the gluing method has a certain risk of falling off and requires frequent inspection and replacement.

[0030] In other embodiments, the bull's eye wheel is a slide buckle with a rectangular narrow opening, the binding belt is set through the slide buckle, and the position of the bull's eye wheel relative to the binding belt is adjustable, so that the device.

[0031] Example 2

[0032] like Figure 2 As shown, a casing transfer structure includes an outer protective tube 4, an inner casing 5 and a device for auxiliary casing laying. At least two of the devices for auxiliary casing laying are installed on the outside of the inner casing 5. The inner casing 5 is passed through the outer protective tube 4, and the bull's eye wheel 2 is supported on the inner wall of the outer protective tube. In this embodiment, an anti-corrosion layer is provided on the outside of the inner casing 5, and the pipe material of the inner casing is a high-density polyethylene pipe SDR11 series.

[0033] This technical solution was experimentally validated using the Miaohoutanggou section of the Binhe East Road (Sigang Liandong Avenue to Hangxing Road) natural gas project. This section of Binhe East Road (Sigang Liandong Avenue to Hangxing Road) is located in the central part of the Zhengzhou Airport Economic Zone (Zhengzhou Xinzheng Comprehensive Bonded Zone), east of the South-to-North Water Diversion Project's main canal. It is planned as a north-south urban arterial road, with a total length of 2,264.88 meters. This project utilizes a GB1 pressure pipeline with a design pressure of 0.4 MPa and a diameter of DE250. The gas source is also a DN300 gas pipeline from Sigang Liandong Avenue, constructed using high-density polyethylene (SDR11 series) (PE100). A DE110 diameter branch pipe is reserved between the two neighborhoods. Steel pipe (SP) with protective casing is used for road and river crossings.

[0034] This device assists in laying natural gas pipelines (inner casing). The binding strap is tied to the outside of the inner casing with the eyelets facing downward, then inserted into the outer protective pipe for laying. After laying, the inner casing's anti-corrosion coating remains intact, resulting in a simple and efficient construction process. While ensuring speed and quality, the operation is simple and quick, resulting in outstanding results.

[0035] Finally, it should be noted that: The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A device for assisting casing laying, characterized by: Including binding belt, bull's eye wheel and binding lock; The bull's eye wheel is fixedly or detachably connected to the binding belt. In the binding state, the bull's eye wheel forms two pulleys at the bottom of the casing; The binding lock buckle is used to bind and fix the binding belt to the outside of the sleeve.

2. The device for assisting casing laying according to claim 1, characterized in that: The binding belt is made of nylon.

3. The device for assisting casing laying according to claim 2, characterized in that: The bull's eye wheel includes a base and a roller part. The base is a square metal sheet with an assembly hole. The binding belt has corresponding mounting holes at corresponding positions. The square metal sheet is mounted on the binding belt by bolts.

4. The device for assisting casing laying according to claim 2, characterized in that: The bull's eye wheel includes a base and a roller part. The base is a square metal sheet. The back side of the square metal sheet is fixed to the binding belt by gluing.

5. The device for assisting casing laying according to claim 2, characterized in that: The bull's eye wheel comprises a base and a roller portion, the base is a slide buckle with a rectangular narrow opening, the binding belt is arranged through the slide buckle, and the position of the bull's eye wheel relative to the binding belt is adjustable.

6. The device for assisting casing laying according to any one of claims 3 to 5, characterized in that: The width of the binding belt is ≥25cm.

7. The device for assisting casing laying according to any one of claims 3 to 5, characterized in that: The length of the binding belt is ≥6m.

8. A casing transfer structure, characterized in that: It comprises an outer protective tube, an inner casing and a device for auxiliary casing laying as described in any one of claims 1 to 7, at least two devices for auxiliary casing laying are installed outside the inner casing, the inner casing is passed through the outer protective tube, and the bull's eye wheel is supported on the inner wall of the outer protective tube.

9. The sleeve transfer structure according to claim 8, characterized in that: An anti-corrosion layer is provided on the outer side of the inner sleeve.

10. The sleeve transfer structure according to claim 9, characterized in that: The inner sleeve is made of high-density polyethylene pipe SDR11 series.

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