Saddle-shaped tee joint tapping device

Abstract

The utility model discloses a saddle type three-way trepanning device which comprises a trepanning connecting rod, a bearing is sleeved on the trepanning connecting rod, a shaft sleeve is installed on the outer side of the lower end of the bearing, a saddle type three-way is detachably installed at the lower end of the shaft sleeve, the lower end of the trepanning connecting rod is connected with a trepanning cutter of the saddle type three-way, and the axes of the trepanning cutter, the bearing and the shaft sleeve are located on the same straight line. A rotating part is arranged at the upper end of the trepanning connecting rod. The saddle-shaped tee joint tapping device has the advantages that when a worker rotates the rotating part, the tapping connecting rod slides up and down in the bearing, so that the tapping cutter conducts cutter feeding or retracting operation, a pipeline below a saddle-shaped tee joint is tapped, the axis of the tapping cutter, the axis of the bearing and the axis of the shaft sleeve are located on the same straight line, and therefore the tapping cutter can be used for tapping the pipeline below the saddle-shaped tee joint. Damage to a threaded opening in the tapping process is avoided, and the tapping quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipelines, in particular to a saddle-shaped three-way hole opening device. Background Art

[0002] Saddle-type tee operation refers to the operation of drilling holes in PE pipes without stopping the gas flow. It is a method widely used in newly built pipelines to connect to the pipeline network. The existing saddle-type tee hole opener is a T-shaped wrench with an inner hexagon socket. It swings greatly during operation. In addition, the saddle-type tee hole opening tool is a plastic thread. Due to the difficulty in operation, the thread is easily damaged during the operation, resulting in failure to advance the tool; or the tool cannot be withdrawn after the hole is opened, and finally the only way to stop the gas flow and replace it is to waste materials and labor costs, as well as the risk of stopping and re-opening the gas flow. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a saddle-shaped three-way opening device.

[0004] The purpose of the utility model is achieved through the following technical scheme: a saddle-type tee hole-opening device, including a hole-opening connecting rod, a bearing is mounted on the hole-opening connecting rod, a shaft sleeve is installed on the outer side of the lower end of the bearing, a saddle-type tee is detachably installed on the lower end of the shaft sleeve, and the lower end of the hole-opening connecting rod is connected to the hole-opening knife of the saddle-type tee, and the axes of the hole-opening knife, the bearing and the shaft sleeve are located on the same straight line, and a rotating part is arranged on the upper end of the hole-opening connecting rod.

[0005] Preferably, the rotating part includes a universal joint and a T-shaped wrench, the upper end of the perforated connecting rod is welded with a universal joint, and the end of the universal joint is provided with a connecting part connected to the T-shaped wrench.

[0006] Preferably, there is an interference fit between the bearing and the sleeve.

[0007] Preferably, the lower end of the hole-punching connecting rod is provided with a hexagonal socket, and the hole-punching knife is installed on the hexagonal socket.

[0008] Preferably, a threaded section a is provided on the inner side surface of the lower end of the sleeve, a threaded section b corresponding to the threaded section a is provided on the outer side surface of the upper end of the saddle-shaped tee, and the saddle-shaped tee is connected to the sleeve by threads.

[0009] The utility model has the following advantages: when the staff rotates the rotating part, the hole-opening connecting rod slides up and down in the bearing, so that the hole-opening knife can advance or retreat, and then a hole is opened in the pipe below the saddle-type tee. By making the axes of the hole-opening knife, the bearing and the sleeve located on the same straight line, damage to the thread mouth is avoided during the hole-opening process, thereby ensuring the hole-opening quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a saddle-type three-way opening device;

[0011] In the figure, 1-T-type wrench, 2-universal joint, 3-hole-opening connecting rod, 4-bearing, 5-sleeve, 6-pipe, 7-hole-opening cutter, 8-saddle-type tee. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0014] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0015] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0016] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] In this embodiment, if Figure 1 As shown, a saddle-type tee hole-opening device includes a hole-opening connecting rod 3, a bearing 4 is mounted on the hole-opening connecting rod 3, and a sleeve 5 is installed on the outer side of the lower end of the bearing 4. Preferably, the bearing 4 and the sleeve 5 are interference fit, and specifically, the bearing 4 is a fixed embedded bearing. The lower end of the sleeve 5 is detachably mounted with a saddle-type tee 8, and the lower end of the hole-opening connecting rod 3 is connected to the hole-opening knife 7 of the saddle-type tee 8, and the axis of the hole-opening knife 7, the bearing 4 and the sleeve 5 are located on the same straight line, and the upper end of the hole-opening connecting rod 3 is provided with a rotating part. When the staff rotates the rotating part, the hole-opening connecting rod 3 slides up and down in the bearing 4, so that the hole-opening knife 7 is operated to advance or retreat, and then the pipe 6 below the saddle-type tee 8 is opened. By making the axis of the hole-opening knife 7, the bearing 4 and the sleeve 5 located on the same straight line, damage to the thread mouth is avoided during the hole-opening process, and the hole-opening quality is guaranteed. In this embodiment, the hole-opening device is suitable for all saddle-type tees with pressure opening.

[0019] Furthermore, the rotating part includes a universal joint 2 and a T-type spanner 1, the upper end of the hole-opening connecting rod 3 is welded with the universal joint 2, and the end of the universal joint 2 is provided with a connecting part connected to the T-type spanner 1. Further, the lower end of the hole-opening connecting rod 3 is provided with a hexagon socket, and the hole-opening cutter 7 is installed on the hexagon socket. In this embodiment, a threaded section a is provided on the inner side surface of the lower end of the sleeve 5, and a threaded section b corresponding to the threaded section a is provided on the outer side surface of the upper end of the saddle-type tee 8, and the saddle-type tee 8 is connected to the sleeve 5 by threads. Specifically, during on-site operations, the saddle-type tee 8 is installed on the sleeve 5 through threads, and the hexagon socket at the lower end of the hole-punching connecting rod 3 is inserted into the inner hole of the hole-punching cutter 7, and then the T-wrench 1 is inserted into the connecting part of the universal joint 2. After the assembly is completed, the hole-punching cutter 7 is placed on the outside of the pipe 6, and the staff controls the hole-punching cutter 7 to advance the cutter by rotating the T-wrench 1. When the hole-punching is completed, the staff rotates the T-wrench 1 in the opposite direction, and the hole-punching cutter 7 is retracted. By making the axes of the hole-punching cutter 7, the bearing 4 and the sleeve 5 located on the same straight line, damage to the thread mouth is avoided during the hole-punching process, thereby ensuring the hole-punching quality. At the same time, the main function of the universal joint 2 is to correct the eccentric force generated during manual operation, thereby ensuring the accuracy of advancing or retracting the cutter.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A saddle-type three-way opening device, characterized in that: The invention comprises a hole-opening connecting rod (3), wherein a bearing (4) is sleeved on the hole-opening connecting rod (3), a shaft sleeve (5) is installed on the outer side of the lower end of the bearing (4), a saddle-type tee (8) is detachably installed on the lower end of the shaft sleeve (5), and the lower end of the hole-opening connecting rod (3) is connected to a hole-opening knife (7) of the saddle-type tee (8), and the axes of the hole-opening knife (7), the bearing (4) and the shaft sleeve (5) are located on the same straight line, and a rotating part is arranged at the upper end of the hole-opening connecting rod (3).

2. The saddle-type three-way hole opening device according to claim 1, characterized in that: The rotating part comprises a universal joint (2) and a T-shaped wrench (1); the upper end of the perforated connecting rod (3) is welded with the universal joint (2); and the end of the universal joint (2) is provided with a connecting part connected to the T-shaped wrench (1).

3. The saddle-type three-way hole opening device according to claim 2, characterized in that: The bearing (4) and the shaft sleeve (5) are in interference fit.

4. The saddle-type three-way hole opening device according to claim 3, characterized in that: The lower end of the hole-opening connecting rod (3) is provided with a hexagonal socket, and the hole-opening knife (7) is installed on the hexagonal socket.

5. The saddle-type three-way hole opening device according to claim 4, characterized in that: A threaded section a is provided on the inner side surface of the lower end of the shaft sleeve (5), and a threaded section b corresponding to the threaded section a is provided on the outer side surface of the upper end of the saddle-shaped tee (8). The saddle-shaped tee (8) is connected to the shaft sleeve (5) via threads.

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