A drilling shoe
By designing a drilling and grinding shoe with multiple front teeth knives and grinding seats, the existing grinding shoe cannot drill and wear during the propulsion process is solved, and efficient breakage and wear reduction of hard ore is achieved.
Patent Information
- Application Number
- CN202421164540.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the propulsion process, existing drilling and grinding shoes are prone to inability to drill into the top position due to grinding toe problems, and when encountering hard ore, they will cause serious wear of grinding toe.
A drilling and grinding shoe is designed, including the grinding shoe body, grinding seat, side cylinder, head, threaded cylinder and front tooth knife. The front tooth knife consists of multiple, placed in an annular shape, with a placement angle of 60°, and is fixedly connected to the press rod in the threaded barrel. The design uses multiple tooth segments of the front tooth knife to tightly fit together to increase the contact pressure, effectively break the hard ore, and further process the ore through the grinding seat and grinding bar.
This design can effectively solve the problem that the grinding toe cannot be drilled, reduce wear, and improve the crushing ability in hard ore, ensuring the smooth progress of the propulsion process.
Smart Images
Figure CN222746052U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drilling grinding shoes, in particular to a drilling grinding shoe. Background Art
[0002] When the connecting pipe in the drilling well is deformed, it may cause other connecting pipes to be unable to enter. There are also other mineral impurities in the connecting pipe, which need to be broken up to increase the space inside the connecting pipe to facilitate the entry of other connecting pipes. However, when the existing grinding shoes are advancing, the top position is often unable to be drilled due to the problem of the grinding shoe head, which affects the overall advancement work. When the impurities themselves are hard, the grinding shoe head will cause serious wear. Utility Model Content
[0003] The purpose of the utility model is to provide a drilling grinding shoe to solve the above problems existing in the prior art.
[0004] Technical solution: A drilling grinding shoe comprises a grinding shoe body, on which a grinding seat, a side cylinder, a top head, a threaded cylinder and a front tooth cutter are arranged;
[0005] The grinding seat is arranged between the top head and the threaded head, the side tube is fixedly connected to the grinding seat, and the front tooth cutter is arranged inside the top head and abuts against the threaded tube.
[0006] In a further embodiment, a plurality of front tooth cutters are provided, and tooth grooves are provided on the cutter segments of the front tooth cutters facing the threaded barrel.
[0007] In a further embodiment, a plurality of front tooth cutters are placed in a ring shape and the placement angle is 60°.
[0008] In a further embodiment, a pressure rod is slidably disposed in the threaded cylinder, and the pressure rod is fixedly connected to the front tooth cutter.
[0009] In a further embodiment, the grinding seat is provided with grinding teeth on a side facing the top head.
[0010] In a further embodiment, grinding bars are fixedly mounted on the side cylinder.
[0011] Beneficial effects:
[0012] The ground equipment is fixedly connected to the threaded barrel by threads, and the grinding shoe body is sent into the connecting pipe. The front tooth cutter first contacts the ore to crush the ore. When the overall texture of the ore is hard, the ground equipment pushes the push rod to continue pushing the front tooth cutter forward. At this time, multiple front tooth cutters are tightly fitted together, the contact area between the front tooth cutter head and the ore becomes smaller, and the pressure increases, so the ore can be crushed. During the advancement process, after the front tooth cutter enters, the ore is crushed again through the grinding seat. When the side wall of the connecting pipe is deformed or fine ore is adhered to the side wall, the fine ore can be ground into powder through the grinding bar. When passing through the connecting pipe, the deformed position is propped up to repair the deformation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an overall view of the utility model.
[0014] Figure 2 It is a front view of the utility model.
[0015] Figure 3 It is a left side view of the utility model.
[0016] Figure 4 It is a top position view of the utility model.
[0017] Figure 5 It is a right side view of the utility model.
[0018] Figure 6 This is a structural view of the front tooth cutter of the utility model.
[0019] Figure 7 This is a structural view of the front tooth cutter of the utility model.
[0020] The accompanying drawings are marked as follows: 1. grinding shoe body; 2. threaded cylinder; 3. grinding seat; 4. grinding strip; 5. side cylinder; 6. front tooth cutter; 7. top head; 8. pressure rod; 9. tooth groove. DETAILED DESCRIPTION
[0021] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention.
[0022] It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details.
[0023] In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.
[0024] like Figure 1-Figure 7 As shown, a drilling grinding shoe is composed of a grinding shoe body 1, a threaded cylinder 2, a grinding seat 3, a grinding bar 4, a side cylinder 5, a front tooth cutter 6, a top head 7, a pressure rod 8, and a tooth groove 9.
[0025] like Figure 1-Figure 7 As shown, the top head 7 of the grinding shoe body 1 faces one end of the connecting pipe, and YD alloy and other wear-resistant materials are welded on the surface to improve the overall rigidity of the top head 7 so that it will not be damaged due to insufficient hardness when in contact with ore.
[0026] A grinding seat 3 is installed at the end of the mandrel 7. One side of the grinding seat 3 has grinding teeth, and the other side is a flat structure. The grinding teeth are mainly used to grind the ore when the grinding shoe body 1 continues to move downward and contacts the ore.
[0027] A side tube 5 is installed on the side of the grinding seat 3, and two grinding strips 4 are installed on the side tube 5. The grinding strips 4 are mainly used to crush small ore fragments adhering to the inner wall when they come into contact with the inner wall of the connecting tube. At the same time, during the downward movement, the speed is slowed down to reshape the concave or deformed parts of the connecting pipe. Because the connecting pipe is to be placed deep underground and is inconvenient to replace, violent means cannot be used. For example, the conventional method for small ore fragments adhering to the inner wall is to shovel them off or use a scraping method. This method can easily cause the inner wall of the connecting pipe to become thinner, which can easily cause leakage. Therefore, a slow grinding method is used to clean the fragments to ensure that the connecting pipe is intact and its service life is extended.
[0028] The threaded barrel 2 is installed on the top head 7. The threaded barrel 2 is mainly connected with the ground equipment by thread for fixing. The grinding shoe body 1 can be sent into the connecting pipe for cleaning.
[0029] The pressure rod 8 is inside the threaded barrel 2. In fact, the pressure rod 8 with threads in the middle is connected to the ground equipment. The pressure rod 8 and the threaded barrel 2 are slidably matched. The distance between the pressure rod 8 and the top of the threaded barrel 2 can be adjusted by pushing the pressure rod 8.
[0030] The front serrated knife 6 is connected to the pressure rod 8. When the pressure rod 8 is pushed, the front serrated knife 6 can be driven to move a certain distance, that is, the position distance of the front serrated knife 6 extending out of the top head 7 can be adjusted.
[0031] Front tooth knife 6 Figure 7 As shown, it is composed of 3 parts. The 3 front tooth cutters 6 are placed at 60° to each other to form a triangular structure with higher overall stability. The front part of the front tooth cutter 6 is flat, which can promote the cutting when it comes into contact with the ore. The rear part has tooth grooves 9 to facilitate the overall flow. The broken impurities can flow away on the tooth grooves 9, and there are gaps between the 3 front tooth cutters 6 to collect some impurities. When encountering ore with a hard texture, the front tooth cutters 6 are pushed forward, the gaps between the 3 front tooth cutters 6 disappear, the force-bearing surface with the ore is reduced, and the pressure is increased to crush the ore.
[0032] The working principle of this utility is as follows:
[0033] The ground equipment is threadedly fixedly connected to the threaded barrel 2, and the grinding shoe body 1 is sent into the connecting pipe. The front tooth cutter 6 first contacts the ore to crush the ore. When the overall texture of the ore is hard, the ground equipment pushes the push rod to continue pushing the front tooth cutter 6 forward. At this time, multiple front tooth cutters 6 are tightly fitted together, and the contact area between the head of the front tooth cutter 6 and the ore becomes smaller, and the pressure increases, so that the ore can be crushed. During the advancement process, after the front tooth cutter 6 enters, the ore is crushed again through the grinding seat 3. When the side wall of the connecting pipe is deformed or fine ore is adhered to the side wall, the fine ore can be ground into powder through the grinding bar 4. When passing through the connecting pipe, the deformed position is propped up to repair the deformation.
[0034] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. A drilling mill shoe, comprising a mill shoe body (1), characterized in that: The grinding shoe body (1) is provided with a grinding seat (3), a side cylinder (5), a top head (7), a threaded cylinder (2) and a front tooth cutter (6); The grinding seat (3) is arranged between the top head (7) and the threaded barrel, the side barrel (5) is fixedly connected to the grinding seat (3), and the front tooth cutter (6) is arranged inside the top head (7) and abuts against the threaded barrel (2).
2. A drilling grinding shoe as claimed in claim 1, characterized in that: A plurality of front tooth cutters (6) are provided, and tooth grooves (9) are provided on the cutter segments of the front tooth cutters (6) facing the threaded barrel (2).
3. A drilling grinding shoe as claimed in claim 2, characterized in that: A plurality of front tooth cutters (6) are arranged in a ring shape, and the arrangement angle is 60 degrees.
4. A drilling grinding shoe as claimed in claim 1, characterized in that: A pressure rod (8) is slidably arranged in the threaded cylinder (2), and the pressure rod (8) is fixedly connected to the front toothed cutter (6).
5. A drilling grinding shoe as claimed in claim 1, characterized in that: The grinding seat (3) is provided with grinding teeth on the side facing the top head (7).
6. A drilling grinding shoe as claimed in claim 1, characterized in that: The side cylinder (5) is fixedly mounted with a grinding bar (4).