Dragging and holding device for nodular cast iron pipe

Abstract

The utility model relates to a dragging and enclasping device for a nodular cast iron pipe. The dragging and enclasping device structurally comprises two semicircular socket clamps which are connected together, the semicircular socket clamp comprises a semicircular sleeve, a semicircular plate arranged at the upper end of the semicircular sleeve, and a connecting plate jointly connected to the semicircular sleeve and the semicircular plate; the upper end of the semicircular sleeve is flush with the upper end of the nodular cast iron pipe, and the inner wall of the semicircular sleeve is matched with the outer wall of the socket section of the nodular cast iron pipe; the semicircular plate is perpendicular to the semicircular sleeve, and the lower end of the semicircular plate is adjacent to the socket end of the nodular cast iron pipe. According to the utility model, the symmetrical semicircular bellmouth clamp design is adopted, and the ductile cast iron pipe can be firmly held through simple bolt connection. The structure is simple, on-site rapid manufacturing and installation are facilitated, complex machining and professional equipment are not needed, and the construction preparation time and cost are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipeline construction tool, in particular to a dragging and holding device for nodular cast iron pipe. BACKGROUND

[0002] In pipeline laying engineering, especially when using horizontal directional drilling pipe-pulling technology to lay underground pipeline, various complex geological conditions are often encountered. These geological conditions, such as hard rock layer, soft soil layer or uneven geological structure, can adversely affect the drilling process, resulting in pipeline resistance in the back-dragging stage. When the pipeline back-dragging is blocked, the traditional solution often includes large excavation and the use of large machinery to pull out the pipeline. Large excavation not only requires a large amount of manpower, material resources and time, but also causes great damage to the construction site, increasing the cost of environmental restoration. While using large machinery to pull out the pipeline, although it can solve the problem of pipeline resistance to some extent, it also requires high equipment cost and complex operation process. SUMMARY

[0003] The purpose of the utility model is to provide a dragging and holding device for nodular cast iron pipe to solve the problem of time-consuming and labor-intensive, high cost of back-dragging construction of blocked pipeline

[0004] The utility model is implemented as follows: a dragging and holding device for nodular cast iron pipe, the structure includes two semicircular socket clamps connected together; the semicircular socket clamp includes a semicircular sleeve, a semicircular plate provided on the upper end of the semicircular sleeve, and a connecting plate connected to the semicircular sleeve and the semicircular plate; the upper end of the semicircular sleeve is flush with the upper end of the nodular cast iron pipe, and the inner wall of the semicircular sleeve is fitted with the outer wall of the socket section of the nodular cast iron pipe; the semicircular plate is perpendicular to the semicircular sleeve, and the lower end thereof is adjacent to the socket end of the nodular cast iron pipe.

[0005] Further, the connecting plate includes two connecting strips and a connecting lug plate across the upper ends of the two connecting strips.

[0006] Further, the two connecting strips respectively extend outward from the front and rear ends of the semicircular sleeve, and the length of the connecting strip is the same as the length of the semicircular sleeve.

[0007] Further, the connecting lug plate extends upward along the straight end of the semicircular plate, and forms a door-shaped structure together with the two connecting strips.

[0008] Further, corresponding traction holes are formed in the two connecting lug plates.

[0009] Furthermore, several through holes are provided on the two connecting plates respectively, and fasteners are connected through the corresponding through holes on the two connecting plates.

[0010] Furthermore, the length of the semicircular sleeve is greater than the length of the socket section of the ductile iron pipe, and the lower part of the semicircular sleeve is a semicircular tube that fits into the outer wall of the ductile iron pipe body.

[0011] Furthermore, several reinforcing ribs are connected together on the outer wall of the semicircular sleeve and the upper end of the semicircular plate.

[0012] This utility model adopts a symmetrical semi-circular socket clamp design, which can achieve a stable clamping of ductile iron pipes through simple bolt connection. Its simple structure facilitates rapid on-site fabrication and installation, without the need for complex machining and professional equipment, greatly reducing construction preparation time and costs.

[0013] The semi-circular sleeve of this utility model fits tightly with the socket section of the ductile iron pipe and is longer than the socket section. It can provide additional buffer and support for the stress generated during the dragging process, and can also protect the pipe during the dragging process to prevent damage to the pipe caused by external forces.

[0014] This invention strengthens the overall structure by using stiffeners, ensuring that it can withstand greater tensile force and various complex stresses during towing, thereby improving the reliability and stability of the device.

[0015] This invention allows for the direct removal of obstructed pipes using a dragging device, eliminating the need for extensive excavation, reducing the use of large machinery, lowering construction costs, and minimizing damage to the construction site. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is the front view of this utility model.

[0018] In the diagram: 1. ductile iron pipe, 2. stiffening plate, 3. semi-circular socket clamp, 4. semi-circular sleeve, 5. semi-circular plate, 6. connecting plate, 7. connecting strip plate, 8. connecting ear plate, 9. perforation, 10. bolt, 11. traction hole. Detailed Implementation

[0019] like Figure 1 and Figure 2 As shown, this utility model is fitted onto the outside of the socket end of the ductile iron pipe 1, including two semi-circular socket clamps 3 connected together. The two semi-circular socket clamps 3 have symmetrical structures. After being connected, these two semi-circular socket clamps 3 can completely surround the outside and top of the socket end of the ductile iron pipe.

[0020] The semicircular socket clamp 3 comprises a semicircular sleeve 4, a semicircular plate 5 connected to the upper end of the semicircular sleeve 4, and a connecting plate 6 connected to the semicircular sleeve 4 and the semicircular plate 5. The upper end of the semicircular sleeve 4 is flush with the upper end of the ductile iron pipe 1, and the inner wall of the semicircular sleeve 4 fits the outer wall of the socket section of the ductile iron pipe 1, ensuring that it can be firmly fixed on the ductile iron pipe and preventing it from coming off the socket end of the ductile iron pipe 1 during dragging. The length of the semicircular sleeve 4 is greater than the length of the socket section of the ductile iron pipe 1, ensuring that the semicircular sleeve 4 not only completely covers the socket part of the ductile iron pipe 1, but also extends downward to tightly fit the outer wall of the straight pipe part of the ductile iron pipe 1. The lower half of the semicircular sleeve 4, which is in contact with the straight pipe part of the ductile iron pipe 1, is a precise semicircular sleeve shape to ensure perfect fit with the outer wall of the ductile iron pipe 1. The length of the semicircular sleeve 4 exceeds the socket end of the ductile iron pipe 1, providing additional cushioning and support for the stress that may be generated due to dragging or other external forces, thereby improving the overall strength and ensuring the stability of the ductile iron pipe 1 during dragging.

[0021] The semicircular plate 5 is parallel to the size of the socket end of the ductile iron pipe 1 and is perpendicular to the semicircular socket clamp 4. The semicircular plate 5 enhances the overall stability and provides a mounting base for the connecting plate 6. The connecting plate 6 is used to connect and fix two semicircular socket clamps 3 together for dragging the ductile iron pipe 1.

[0022] The connecting plate 6 is in the shape of a door, including two connecting strip plates 7 and a connecting ear plate 8. The inner side of the connecting strip plate 7 fits the outer wall of the semicircular sleeve 4, and the two connecting strip plates 7 each extend outward along the front and rear ends of the semicircular sleeve 4. The length of the connecting strip plate 7 is the same as the length of the semicircular sleeve 4 to ensure that the connecting plate 6 can provide sufficient support. The connecting ear plate 8 extends upward along the straight end of the semicircular plate 5, forming a complete door-shaped structure with the two strip plates 7. The inner end of the connecting strip plate 7 is welded to the semicircular sleeve 4, and the lower end of the connecting ear plate 8 is welded to the semicircular plate 5. The connecting plate 6 is cut from a whole piece of steel plate to ensure that it has sufficient strength to withstand the dragging force on the ductile iron pipe 1.

[0023] A plurality of perforations 9 are provided on the two connecting plates 6, and the perforations 9 on the two connecting plates 6 correspond one by one. Bolts 10 are inserted through the corresponding perforations 9 on the two connecting plates 6, so that the two semicircular socket clamps 3 can be stably connected together. Specifically, a plurality of perforations 9 are provided on the lower part of the connecting strip plate 7 and the connecting ear plate 8.

[0024] Corresponding traction holes 11 are provided on the two connecting ear plates 8, which are used to pass through the traction rope for binding, facilitating the traction operation on the ductile iron pipe 1 during dragging and ensuring the smooth progress of the dragging process.

[0025] A plurality of rib plates 2 are connected to the outer wall of the half-circular sleeve 4 and the upper end of the half-circular plate 5 to strengthen the overall structure, improve the reliability and stability of the device during use, and enable the device to better withstand various stresses generated during the dragging process.

[0026] In use, the inner walls of the two half-circular sleeves 4 are tightly fitted on the outer wall of the socket section of the ductile iron pipe 1, the bolts 10 are passed through the corresponding perforations 9 on the two connecting plates 6 to stably connect the two half-circular socket clamps 3 together. After the connection is stable, the towing rope is passed through the towing holes 11 on the two connecting lug plates 8 and is tied. After the towing rope is firmly connected, appropriate dragging equipment is used to drag the ductile iron pipe 1 through the towing rope. During the dragging process, the state of the device and the movement of the ductile iron pipe are observed to ensure that the dragging is carried out smoothly. After reaching the predetermined position, the dragging operation is stopped. After the dragging is completed, the bolts 10 are loosened using a wrench, the two half-circular socket clamps 3 are separated, and the device is removed from the ductile iron pipe 1.

Claims

1. A drag-and-grip device for ductile iron pipes, characterized in that, The device includes two semi-circular socket clamps connected together; each semi-circular socket clamp includes a semi-circular sleeve, a semi-circular plate disposed at the upper end of the semi-circular sleeve, and a connecting plate connected to both the semi-circular sleeve and the semi-circular plate; the upper end of the semi-circular sleeve is flush with the upper end of the ductile iron pipe, and the inner wall of the semi-circular sleeve fits into the outer wall of the socket section of the ductile iron pipe; the semi-circular plate is perpendicular to the semi-circular sleeve, and its lower end is adjacent to the socket end of the ductile iron pipe.

2. The drag-and-grip device for ductile iron pipes according to claim 1, characterized in that, The connecting plate includes two connecting strips and a connecting lug plate spanning the upper ends of the two connecting strips.

3. The drag-and-grip device for ductile iron pipes according to claim 2, characterized in that, The two connecting strips extend outward from the front and rear ends of the semicircular sleeve, respectively, and the length of the connecting strips is the same as the length of the semicircular sleeve.

4. The drag-and-grip device for ductile iron pipes according to claim 3, characterized in that, The connecting ear plate extends upward along the straight end of the semicircular plate, forming a gate-shaped structure together with the two connecting strips.

5. The drag-and-grip device for ductile iron pipes according to claim 2, characterized in that, Corresponding traction holes are provided on the two connecting ear plates.

6. The drag-and-grip device for ductile iron pipes according to claim 1, characterized in that, Several through holes are provided on the two connecting plates respectively, and fasteners are connected through the corresponding through holes on the two connecting plates.

7. The drag-and-grip device for ductile iron pipes according to claim 1, characterized in that, The length of the semicircular sleeve is greater than the length of the socket section of the ductile iron pipe, and the lower part of the semicircular sleeve is a semicircular tube that fits into the outer wall of the ductile iron pipe.

8. The drag-and-grip device for ductile iron pipes according to claim 1, characterized in that, Several reinforcing ribs are connected together on the outer wall of the semicircular sleeve and the upper end of the semicircular plate.

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