Deep hole lower pipe traction connecting device
Through the deep-hole lower pipe pulling connection device, the grouting pipe is dragged by a drilling rig to solve the hole collapse and resistance problems caused by manpower down pipes, achieving safe and efficient grouting construction, and expanding the construction coverage.
Patent Information
- Application Number
- CN202422544314.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the prior art, the method of pushing the grouting pipe down pipe by manpower can easily lead to the collapse of the coal body in the drilling hole, blockage or excessive resistance, and the grouting pipe cannot be lowered to the specified depth, affecting the grouting effect and posing a safety hazard.
The deep-hole lower pipe pulling connection device is adopted, including a threaded head, a gravity rotation ring and a pipeline connection head. The grouting pipe is pulled into the hole by the drilling rig. The rotation function of the gravity rotation ring is used to protect the grouting pipe from rotating with the drill rod, so as to replace the manpower down pipe with the drilling rig power.
It improves the coverage and safety of grouting construction, has a simple structure and is easy to use, avoids the difficulty of manual down-tubes and ensures the integrity of grouting pipes.
Smart Images
Figure CN223119938U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coal mine production, and particularly relates to a deep-hole pipe-laying traction connection device. Background Art
[0002] In a fully mechanized coal mining face, there are geological abnormal areas. In these areas, the coal body is compressed under the influence of tectonics, and dynamic phenomena such as roof fragmentation and coal wall spalling are likely to occur. In order to reduce the occurrence of coal wall spalling and roof caving accidents in the working face, deep-hole grouting is adopted to reinforce the coal body in the working face. During the grouting construction process, the previous method of pushing the grouting pipe manually was used. After the drilling hole was formed, the drill pipe was withdrawn, and then the grouting pipe was pushed into the grouting hole section by section manually. This method of laying pipes is prone to coal body caving in the drilling hole, blocking the drilling channel, or as the length of the grouting pipe gradually increases, the resistance becomes larger, and the manpower is insufficient to push the grouting pipe, resulting in the inability to lower the grouting pipe to the specified depth, seriously affecting the grouting effect. Content of the Utility Model
[0003] The purpose of the utility model is to provide a deep-hole pipe-laying traction connection device, which can realize the use of a drilling rig to lower the grouting pipe into the grouting hole by dragging the drilling rig.
[0004] The technical solution adopted by the utility model is a deep-hole pipe-laying traction connection device, which includes a screw head, a gravity rotating ring, and a pipeline connection head. The screw head is installed at the front end of the drill pipe of the drilling rig. The pipeline connection head includes a connecting rod in the middle and a straight-through male head at the tail end. The straight-through male head is detachably connected to the female head fixed at one end of the grouting iron pipe. The two ends of the gravity rotating ring are respectively detachably connected to the tail end of the screw head and the head end of the pipeline connection head.
[0005] Further, both ends of the gravity rotating ring are connecting ears. U-shaped grooves are respectively arranged at the tail end of the screw head and the head end of the pipeline connection head, and bolts are used to connect with the connecting ears.
[0006] Further, the straight-through male head is inserted and connected with the female head, and holes are arranged on the side walls of both, and they are fixed with a U-shaped pin.
[0007] The utility model is a connection device used between the drill pipe of the drilling rig and the grouting pipe. During the operation of withdrawing the drill pipe of the drilling rig, the drill pipe of the drilling rig and the grouting pipe are connected by using this device to realize the drilling rig dragging the grouting pipe into the hole. During the operation of laying the grouting pipe in the deep hole, the manual pipe-laying method is changed to the drilling rig dragging pipe-laying method. Connecting the drill pipe of the drilling rig and the grouting pipe replaces manual pipe-laying, and the full length of the drilling hole can be laid with pipes, which can improve the coverage range of the grouting construction, has a high safety factor, a simple structure, and is convenient to use. Both sides of the gravity rotating ring have a rotating function, which does not affect the rotation of the drill pipe of the drilling rig, and can prevent the grouting pipe from rotating with the drill pipe of the drilling rig, playing a role in protecting the grouting pipe, so as to realize the drill pipe of the drilling rig dragging the grouting pipe into the grouting hole. Brief Description of the Drawings
[0008] Figure 1 is a schematic structural diagram of the present utility model;
[0009] Figure 2 is a schematic structural diagram of the screw head of the present utility model;
[0010] Figure 3 is a schematic structural diagram of the gravity rotating ring of the present utility model;
[0011] Figure 4 is a schematic structural diagram of the pipeline connector of the present utility model;
[0012] Figure 5 is a schematic structural diagram of the grouting iron pipe of the present utility model.
[0013] In the figure: 1, screw head; 2, first U-shaped groove; 3, gravity rotating ring; 4, second U-shaped groove; 5, connecting rod; 6, straight-through male head; 7, female head; 8, grouting iron pipe; 9, PE grouting pipe; 10, drill rod of the drill rig. Detailed Description of the Preferred Embodiment
[0014] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a deep-hole pipe-laying traction connection device of the present utility model in conjunction with the accompanying drawings.
[0015] As Figures 1 to 5 shown, a deep-hole pipe-laying traction connection device includes a screw head 1, a gravity rotating ring 3 and a pipeline connector. The screw head 1 is installed at the front end of the drill rod 10 of the drill rig. A first U-shaped groove 2 is welded to the tail end of the screw head 1. The pipeline connector is integrally welded by a second U-shaped groove 4 and one end of a connecting rod 5. A Φ25mm straight-through male head 6 is welded to the other end of the connecting rod 5. One end of the gravity rotating ring 3 is connected to the first U-shaped groove 2 by bolts, and the other end of the gravity rotating ring 3 is connected to the second U-shaped groove 4 of the pipeline connector by bolts. A Φ25mm female head 7 is welded to one end of the grouting iron pipe 8. The straight-through male head 6 is inserted into the female head 7 and fixed with a U-shaped pin, so as to connect the drill rod 10 of the drill rig with the grouting iron pipe 8.
[0016] The grouting borehole adopts a through-type borehole, which is drilled from one side gateway of the fully mechanized coal mining face through to the other side gateway. After the grouting borehole is drilled through, the drill rod 10 of the drill rig is not withdrawn, the drill rig is powered off and locked, the drill bit on the drill rod 10 of the drill rig is removed, the screw head 1 of the present connection device is screwed onto the drill rod 10 of the drill rig, and then the gravity rotating ring 3 and the pipeline connector are respectively installed behind the screw head 1. Then, the grouting iron pipe 8 is connected to the pipeline connector through the straight-through male head 6 and the female head 7. After connection, the PE grouting pipe 9 is fixed on the grouting iron pipe 8.
[0017] After the connection device is installed, start operating the drill rig to retract the drill pipe 10 of the drill rig. The grouting pipe is dragged into the borehole as the drill pipe 10 of the drill rig is retracted. As the length of the drill pipe 10 of the drill rig retracts, the PE grouting pipe 9 is gradually connected. When the drill pipe 10 of the drill rig is completely retracted, the grouting pipe is also lowered into the borehole. During this process, due to the existence of this connection device, both sides of the gravity rotating ring 3 have a rotating function, which does not affect the rotation of the drill pipe, and can prevent the grouting pipe from rotating with the drill pipe. When the drill pipe rotates, it can protect the grouting pipe from being twisted off, playing a role in protecting the grouting pipe. Moreover, it uses the power of the drill rig instead of manual labor, with a high safety factor, a simple structure, and convenient use.
[0018] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.
Claims
1. A deep-hole pipe-laying traction connection device, characterized in that, It includes a threaded head (1), a gravity rotating ring (3) and a pipeline connector. The threaded head (1) is installed at the front end of the drill pipe (10) of the drill rig. The pipeline connector includes a connecting rod (5) in the middle and a straight male head (6) at the tail end. The straight male head (6) is detachably connected to the female head (7) fixed at one end of the grouting iron pipe (8). The two ends of the gravity rotating ring (3) are respectively detachably connected to the tail end of the threaded head (1) and the head end of the pipeline connector.
2. The deep-hole pipe-laying traction connection device according to claim 1, wherein Both ends of the gravity rotating ring (3) are connecting ears. U-shaped grooves are respectively arranged at the tail end of the threaded head (1) and the head end of the pipeline connector, and bolts are used to connect with the connecting ears.
3. The deep-hole pipe-laying traction connection device according to claim 1 or 2, characterized in that, The straight male head (6) is inserted and connected with the female head (7), and holes are arranged on the side walls of both, and the two are fixed with a U-shaped pin.