Novel drill shank for rock drilling
By designing a new decomposed and combined brazing tail structure, the high cost problem of overall replacement of brazing tails in the prior art is solved, and the separate replacement and lubrication of brazing tails is realized, which improves working efficiency and reduces the cost of use.
Patent Information
- Application Number
- CN202421483973.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The brazing tail in the prior art is an integrated structure and does not have the ability to decompose and combine and disassemble, resulting in the need to be replaced as a whole when the brazing tail is damaged, which is relatively cost-effective.
A new type of rock drilling tail is designed, including the upper and lower drilling tail. The bottom of the upper drilling tail is equipped with an installation groove and a threaded hole, and the top of the lower drilling tail is equipped with a insert block and a slot. The installation block is slid into the slot by rotating the inner pentagon bolt, so as to realize the separate installation and replacement of the upper and lower drilling tails.
The separate replacement of the upper and lower brazing tails is achieved, reducing the cost of using the brazing tails, and providing lubrication through the oil storage chamber and oil filling port in the lower brazing tails, reducing wear and improving working efficiency.
Smart Images
Figure CN222596017U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rock drilling tools, in particular to a new drill tail for rock drilling. Background Art
[0002] The drill tail is the part of the drill that bears the impact and torque of the rock drill. It should have high toughness and no plastic deformation. The drill tail can be a part of the drill or an independent tail rod. The drill tail is mainly used in mining operations. It is made of high-quality alloy steel and is carburized as a whole.
[0003] Chinese patent authorization announcement number CN 212656778 U discloses a drill tail buffer mechanism of a hydraulic rock drill, comprising a shell, characterized in that: an impact piston is connected to the inner side of the top of the shell, a fiber tail is connected to the inner side of the bottom end of the shell, a leakage return pipe is installed on one side of the shell, a buffer oil inlet pipe is installed on one side of the shell, a buffer accumulator is installed on the outer side of the buffer oil inlet pipe, a speed regulating valve is installed on the end of the buffer oil inlet pipe away from the shell, a throttle valve is installed on the top of the leakage return pipe, a leakage return oil cavity is arranged on one side of the bottom end of the leakage return pipe, the bottom of the leakage return pipe is connected to one end of the annular buffer gap, a connecting seat is arranged in the middle position of one side of the shell, and a lock buckle is installed on the top of the connecting seat; the utility model adds a buffer spring and a buffer piston, enhances the impact absorption capacity of the buffer structure, adds a shell, a connecting seat and a lock buckle, and makes the disassembly and repair of the buffer mechanism more convenient.
[0004] However, the drill tail of the prior art is an integrated structure, which does not have the ability to be disassembled, assembled and disassembled. When the drill tail is damaged, it needs to be replaced as a whole, which has a high cost. Therefore, a new drill tail for rock drilling is urgently needed. Utility Model Content
[0005] The utility model aims to provide a new type of drill tail for rock drilling, so as to solve the problem that the drill tail has no decomposition, assembly and disassembly capabilities and needs to be replaced as a whole when the drill tail is damaged, resulting in high cost.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a new drill tail for rock drilling, comprising an upper drill tail and a lower drill tail, the bottom of the upper drill tail is provided with a mounting groove, the side of the mounting groove is provided with four threaded holes, the four threaded holes are respectively threadedly connected with inner pentagonal bolts, the inner wall of the mounting groove is provided with four movable grooves, one end of the inner pentagonal bolts is respectively movably connected with a mounting block, the top of the lower drill tail is fixedly connected with an insert block, and the outer surface of the insert block is provided with four slots.
[0007] Preferably, the four slots are respectively matched with the mounting blocks, and gaskets are respectively fixedly connected in the four slots.
[0008] The bottom of the upper drill tail is provided with a mounting groove and a threaded hole, which can be used to install and fix the lower drill tail. The top of the lower drill tail is provided with an insert block, which is inserted into the mounting groove. The inner five-point bolts are rotated respectively to make the mounting blocks slide into the slots respectively, and then the lower drill tail is installed.
[0009] Preferably, the mounting blocks are slidably disposed in four movable grooves respectively.
[0010] Preferably, a connecting neck is fixedly connected to the top of the upper shank, a mounting shaft is fixedly connected to the top of the connecting neck, and a spline is provided in an annular array on the surface of the mounting shaft.
[0011] The mounting shaft and spline are used to dock with the drilling rig to facilitate its installation.
[0012] Preferably, a shank column is fixedly connected to the bottom of the lower shank, and a drilling thread is provided on the surface of the shank column.
[0013] Preferably, an oil storage chamber is provided inside the lower shank, an oil filling port is provided on one side of the lower shank, and a sealing cover is connected to the inner thread of the oil filling port.
[0014] An oil storage chamber and an oil filling port are also provided inside the lower shank, which can store lubricating oil and provide lubrication for the shank column through the oil outlet.
[0015] Preferably, an oil guide cavity is provided inside the shank column, and an oil outlet is provided on the surface of the shank column.
[0016] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0017] First, the utility model has a mounting groove and a threaded hole at the bottom of the upper drill tail, which can be used to install and fix the lower drill tail. An insert block is provided on the top of the lower drill tail, which is inserted into the mounting groove. The inner five-pointed bolts are rotated respectively to make the mounting blocks slide into the slots respectively, and then the lower drill tail is installed, which facilitates the separate replacement of the upper drill tail and the lower drill tail, and effectively saves the use cost of the drill tail.
[0018] Second, the utility model further has an oil storage cavity and an oil filling port inside the lower drill tail, which can store lubricating oil and provide lubrication for the drill tail column through the oil outlet, so as to reduce wear and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the cutaway and three-dimensional structure of the upper and lower drill tails of the utility model;
[0021] Figure 3 This is an enlarged structural diagram of the utility model at A;
[0022] Figure 4 It is a front cutaway structural diagram of the lower shank and shank column of the utility model.
[0023] Among them: 1. Upper drill tail; 2. Lower drill tail; 3. Mounting groove; 4. Socket five-point bolt; 5. Mounting block; 6. Insert block; 7. Slot; 8. Gasket; 9. Connecting neck; 10. Mounting shaft; 11. Spline; 12. Drill tail column; 13. Drilling thread; 14. Oil storage chamber; 15. Sealing cover; 16. Oil guide chamber. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model provides the following technical solutions:
[0026] Embodiment 1
[0027] See also Figure 1 , Figure 2 , Figure 3 A new type of drill tail for rock drilling comprises an upper drill tail 1 and a lower drill tail 2. A mounting groove 3 is provided at the bottom of the upper drill tail 1, four threaded holes are provided on the side of the mounting groove 3, and inner pentagonal bolts 4 are respectively threadedly connected in the four threaded holes. Four movable grooves are provided on the inner wall of the mounting groove 3, and one end of the inner pentagonal bolts 4 is respectively movably connected to a mounting block 5. An insert block 6 is fixedly connected to the top of the lower drill tail 2, and four slots 7 are provided on the outer surface of the insert block 6.
[0028] The four slots 7 are respectively matched with the mounting blocks 5 , and gaskets 8 are respectively fixedly connected in the four slots 7 .
[0029] The mounting blocks 5 are slidably disposed in the four movable grooves respectively.
[0030] A connection neck 9 is fixedly connected to the top of the upper shank tail 1 , and a mounting shaft 10 is fixedly connected to the top of the connection neck 9 . A spline 11 is provided in an annular array on the surface of the mounting shaft 10 .
[0031] Through the above technical scheme, the bottom of the upper drill tail 1 is provided with a mounting groove 3 and a threaded hole, and the lower drill tail 2 can be installed and fixed. The top of the lower drill tail 2 is provided with an insert block 6, and the insert block 6 is inserted into the mounting groove 3. The inner five-point bolts 4 are rotated respectively to make the mounting blocks 5 slide into the slots 7 respectively, and then the lower drill tail 2 is installed, which facilitates the separate replacement of the upper drill tail 1 and the lower drill tail 2, and effectively saves the use cost of the drill tail.
[0032] Embodiment 2
[0033] See also Figure 2 , Figure 4 On the basis of the first embodiment, it is further obtained that: a shank column 12 is fixedly connected to the bottom of the lower shank 2, and a drilling thread 13 is provided on the surface of the shank column 12.
[0034] An oil storage chamber 14 is provided inside the lower shank tail 2, and an oil filling port is provided on one side of the lower shank tail 2. A sealing cap 15 is connected to the inner thread of the oil filling port.
[0035] An oil guide cavity 16 is formed inside the shank column 12 , and an oil outlet is formed on the surface of the shank column 12 .
[0036] Through the above technical solution, an oil storage chamber 14 and an oil filling port are further provided inside the lower shank 2, which can store lubricating oil and provide lubrication for the shank column 12 through the oil outlet to reduce wear and improve work efficiency.
[0037] In actual operation, when the device is in use, a mounting groove 3 and a threaded hole are provided at the bottom of the upper drill tail 1, on which the lower drill tail 2 can be installed and fixed; an insert block 6 is provided at the top of the lower drill tail 2, which is inserted into the mounting groove 3, and the inner five-point bolts 4 are rotated respectively to make the mounting blocks 5 slide into the slots 7 respectively, so as to install the lower drill tail 2, which is convenient for the separate replacement of the upper drill tail 1 and the lower drill tail 2, and effectively saves the use cost of the drill tail; an oil storage chamber 14 and an oil filling port are also provided inside the lower drill tail 2, which can store lubricating oil and provide lubrication for the drill tail column 12 through the oil outlet, so as to reduce wear and improve work efficiency.
[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A new type of drill tail for rock drilling, comprising an upper drill tail (1) and a lower drill tail (2), characterized in that: The bottom of the upper drill tail (1) is provided with a mounting groove (3), the side of the mounting groove (3) is provided with four threaded holes, the four threaded holes are respectively threadedly connected with inner pentagonal bolts (4), the inner wall of the mounting groove (3) is provided with four movable grooves, one end of the inner pentagonal bolts (4) is respectively movably connected with a mounting block (5), the top of the lower drill tail (2) is fixedly connected with an insert block (6), and the outer surface of the insert block (6) is provided with four slots (7).
2. A new type of drill tail for rock drilling according to claim 1, characterized in that: The four slots (7) are respectively matched with the mounting blocks (5), and gaskets (8) are respectively fixedly connected in the four slots (7).
3. The new type of drill tail for rock drilling according to claim 1, characterized in that: The mounting blocks (5) are slidably arranged in the four movable grooves respectively.
4. The new type of drill tail for rock drilling according to claim 1, characterized in that: The top of the upper shank tail (1) is fixedly connected to a connection neck (9), the top of the connection neck (9) is fixedly connected to a mounting shaft (10), and a spline (11) is provided in an annular array on the surface of the mounting shaft (10).
5. The new type of drill bit for rock drilling according to claim 1, characterized in that: The bottom of the lower shank (2) is fixedly connected to a shank column (12), and a drilling thread (13) is provided on the surface of the shank column (12).
6. A new type of drill tail for rock drilling according to claim 5, characterized in that: An oil storage chamber (14) is provided inside the lower shank (2), an oil filling port is provided on one side of the lower shank (2), and a sealing cover (15) is connected to the inner thread of the oil filling port.
7. The new drill bit for rock drilling according to claim 5, characterized in that: An oil guide cavity (16) is provided inside the shank column (12), and an oil outlet is provided on the surface of the shank column (12).