A large diameter casing rapid running device

Abstract

The utility model discloses a big diameter casing quick pipe lowering device, including the connecting head, and the connecting head two ends are equipped with first cavity and second cavity respectively, and the first cavity is equipped with the thread matched with the drill rod in, and is connected with the drill rod thread, and the second cavity is equipped with the male mouth and is coupled with the casing. When pipe lowering operation, the connecting head head end connects the drill pipe, and the tail end connects the big diameter casing, utilizes the power generated when the drill works, and promotes the big diameter casing pipe lowering, thereby realizes the big diameter casing quick pipe lowering, solves the problem such as big difficulty, high risk coefficient, pipe lowering not in place and so on of manual pipe lowering.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine machinery technology, specifically relating to a device for rapid lowering of large-diameter casing. Background Technology

[0002] Large-diameter casing in mines typically refers to steel or composite pipes with an outer diameter ≥ 200 mm, used for shaft support and isolation. The application of large-diameter casing in mines is gradually becoming more widespread. However, the increased diameter and weight of the casing necessitate the combined efforts of several workers to lower it, leading to difficulties, high risks, and the possibility of incomplete installation. This negatively impacts extraction quality and hinders gas control efforts in outburst-prone mines. Utility Model Content

[0003] The purpose of this invention is to provide a device for rapid lowering of large-diameter casing, which enables rapid lowering of large-diameter casing and effectively solves problems such as slow lowering and incomplete lowering of large-diameter casing.

[0004] The technical solution adopted by this utility model is a large-diameter casing quick-running device, including a connector, with a first cavity and a second cavity respectively provided at both ends of the connector. The first cavity is provided with a thread that matches the drill rod and is threadedly connected to the drill rod. The second cavity is provided with a male end that is coupled to the casing.

[0005] Furthermore, the aforementioned connector includes a first connector and a second connector. The first connector has a first cavity at its head end and a cylindrical connecting post at its end. A connecting plate is provided near the end of the first connector, and multiple through holes are provided circumferentially on the connecting plate. The second connector has a connecting groove at its head end corresponding to the connecting post. The connecting post is inserted into the second connector through the connecting groove. The outer periphery of the connecting groove is a connecting part, and a threaded connecting hole is provided on the connecting part corresponding to the through hole. After the connecting post is inserted into the connecting groove, it is fastened by a screw through the threaded connecting hole. The second connector has a male end with multiple sizes.

[0006] Compared with the prior art, the beneficial effect of this utility model is that during the pipe lowering operation, the head end is connected to the drill rod of the drilling rig, and the end end is connected to the large-diameter casing. The drill rod is clamped by the drill rig chuck, and the drill rig power head is connected to the tail of the drill rod. The power generated by the drilling rig during operation is used to push the large-diameter casing to lower, thereby realizing the rapid lowering of the large-diameter casing and solving the problems of high difficulty, high risk, and incomplete lowering of the casing by manual pipe lowering. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the connection of a rapid casing lowering device for large-diameter casings; Figure 2 This is a schematic diagram of the structure of the first connector and the second connector. Detailed Implementation

[0008] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it. Example

[0009] like Figure 1-2 As shown, a rapid casing lowering device for large-diameter casing includes a connector 1. The connector 1 has a first cavity 2 and a second cavity 3 at both ends. The first cavity 2 has a thread matching a drill rod 4, and the connector 1 is threadedly connected to the drill rod 4 through the first cavity 2. The second cavity 3 has a male connector that couples with the casing 5. During casing lowering operations, the connector 1 connects to the drill rod at one end and to the large-diameter casing 5 at the other. The drill rod is clamped by a drill rig chuck, and a drill rig power adapter is connected to the tail of the drill rod. The power generated by the drill rig during operation is used to push the large-diameter casing lower, thus achieving rapid casing lowering and solving problems such as the difficulty, high risk, and incomplete casing lowering during manual lowering.

[0010] Furthermore, the connector 1 includes a first connector 101 and a second connector 102. The first connector 101 has a first cavity 2 at its head end and a cylindrical connecting post 1011 at its end. A connecting plate 1012 is provided near the end of the first connector 101. The connecting plate 1012 has multiple through holes 1013 circumferentially. The second connector 102 has a connecting groove 1021 at its head end corresponding to the connecting post 1011. The connecting post 1011 is inserted into the second connector 102 through the connecting groove 1021. The outer periphery of the connecting groove 1021 is a connecting part 1022. A threaded connecting hole 1023 is provided on the connecting part 1022 corresponding to the through holes 1013. After the connecting post 1011 is inserted into the connecting groove 1021, a screw 103 is used to fasten the first connector 101 and the second connector 102 through the threaded connecting hole 1023. The second connector 102 has a male opening at its end, and the male opening has multiple sizes corresponding to the large-diameter sleeve 5. When using casings of different sizes, the first connector 101 can be connected to the drill pipe, and the corresponding second connector can be replaced to meet the usage requirements, thus improving the applicability of the connector. The first connector and the second connector are fastened with screws after being inserted, which ensures the reliability of the connection, facilitates the corresponding connection, and reduces the need for docking operations.

[0011] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for rapid lowering of large-diameter casing, characterized in that, It includes a connector (1), with a first cavity (2) and a second cavity (3) at both ends. The first cavity (2) is provided with a thread that matches the drill rod (4) and is threadedly connected to the drill rod (4). The second cavity (3) is provided with a male end that is coupled to the sleeve (5).

2. The large-diameter casing rapid lowering device according to claim 1, characterized in that, The connector (1) includes a first connector (101) and a second connector (102). The first connector (101) has a first cavity (2) at its head end and a cylindrical connecting post (1011) at its end. A connecting plate (1012) is provided near the end of the first connector (1012). The connecting plate (1012) has multiple through holes (1013) circumferentially opened. The second connector (102) has a connecting groove (1021) at its head end corresponding to the connecting post (1011). 1) The second connector (102) is inserted into the connecting groove (1021). The outer periphery of the connecting groove (1021) is the connecting part (1022). The connecting part (1022) has a threaded connecting hole (1023) corresponding to the through hole (1013). After the connecting post (1011) is inserted into the connecting groove (1021), it is fastened by the screw (103) through the threaded connecting hole (1023). The end of the second connector (102) is provided with a male opening, and the male opening is provided with multiple sizes.

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