CN214196191U - Variable-diameter drill bit - Google Patents
Variable-diameter drill bit Download PDFInfo
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- CN214196191U CN214196191U CN202023020427.8U CN202023020427U CN214196191U CN 214196191 U CN214196191 U CN 214196191U CN 202023020427 U CN202023020427 U CN 202023020427U CN 214196191 U CN214196191 U CN 214196191U
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Abstract
The utility model discloses a variable-diameter drill bit, which comprises a drill rod, wherein a movable cavity is arranged in the drill rod, the bottom of the inner wall of the movable cavity is fixedly connected with a first spring, the bottom of the first spring is fixedly connected with a connecting block, the connecting block is arranged in the movable cavity in a sliding way, the bottom of the connecting block is fixedly connected with a drill bit, the drill bit is fixedly connected with a plurality of first limiting blocks, a hole expanding rod is hinged on the first limiting block, a plurality of first hole expanding blades are fixedly connected on the hole expanding rod, a connecting shaft is hinged on the hole expanding rod, a plurality of limiting grooves are arranged on the side wall of the drill rod, a pin rod is fixedly connected between the inner walls at the upper ends of the limiting grooves, and the connecting shaft is arranged on the pin rod in a rotating way; compared with the prior art, can touch rock etc. when drilling through the connecting block and can make the drill bit retract, drive the outside motion of reaming pole to can increase the diameter of drilling, avoid the problem that the card bored to appear in the drill bit, and drag away by force and lead to the drill bit to damage easily and can't use, influence the process of construction.
Description
Technical Field
The utility model relates to a mining drilling technology field specifically is a variable footpath drill bit.
Background
When the coal mine gas extraction work is carried out, holes need to be drilled in a coal seam, when coal is soft and the ground stress is high or the coal mine gas extraction work is influenced by mining, the holes can be broken to different degrees in the drilled holes, a drill bit is blocked in the holes and cannot be taken out, production is delayed, unnecessary economic loss is caused, the existing reaming drill bits are few in types and single in function, only can be reamed when the drill bit is drilled, the diameter of the drill bit part cannot be changed, the drill bit can be taken out only in a forced pulling-out mode when the drill bit is drilled, success cannot be guaranteed, the drill bit is prone to break, and subsequent construction progress is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but reducing drill bit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a variable-diameter drill bit comprises a drill rod, a movable cavity is formed in the drill rod, a first spring is fixedly connected to the bottom of the inner wall of the movable cavity, a connecting block is fixedly connected to the bottom of the first spring and slidably arranged in the movable cavity, a drill bit is fixedly connected to the bottom of the connecting block, a plurality of first limiting blocks are fixedly connected to the drill bit, a hole expanding rod is hinged to each first limiting block, a plurality of first hole expanding blades are fixedly connected to the hole expanding rod, a connecting shaft is hinged to the hole expanding rod, a plurality of limiting grooves are formed in the side wall of the drill rod, a pin rod is fixedly connected between the inner walls of the upper ends of the limiting grooves, the connecting shaft is rotatably arranged on the pin rod, one side of the hole expanding rod abuts against the inner wall of the limiting groove, the drill bit can retract when hard rocks and the like occur during drilling, the connecting block can be driven to move in the movable cavity, thereby compress first spring, can make the reaming pole motion, make the reaming pole pop out from the spacing inslot, increase the drilling diameter, avoid accomplishing the drilling and need take out the drill bit card in the rock when taking out, the condition of sticking the brill can only be taken out through the mode of pulling out by force, can not guarantee successfully moreover to lead to the drill bit to damage or split in the rock, not only can cause economic loss, also can influence the progress of construction fixedly connected with fixed axle on the drilling rod, fixedly connected with dead lever on the fixed axle, it is equipped with the lantern ring to slide on the dead lever, a plurality of stop device of fixedly connected with on the lantern ring.
Preferably, a plurality of third limiting blocks are fixedly connected to the side wall of the sleeve ring, a first hinging block is hinged to each third limiting block, a movable rod is fixedly connected to one side of each first hinging block, one end of each movable rod is fixedly connected with a second hinging block, a hole expanding plate is hinged to each second hinging block, a second fixing block is fixedly connected to the upper end of the inner wall of the hole expanding plate, each second hinging block and the second fixing block are hinged to each other, a plurality of second limiting blocks are fixedly connected to the side wall of the bottom of the fixed shaft, one end of each second limiting block is hinged to a connecting plate, one end of each connecting plate is hinged to the bottom of the inner wall of the hole expanding plate, a first fixing block is fixedly connected to the bottom of the inner wall of the hole expanding plate, each first fixing block and each connecting plate are hinged to each other, a plurality of second hole expanding blades are fixedly connected to the side wall of the hole expanding plate, and when hole expanding is needed, the position of the sleeve ring can be manually adjusted, thereby can make reaming board 26 follow connecting plate 21 and rotate, change the angle of reaming board 26, increase the diameter of drilling, need not change the drill bit again, can improve the efficiency of construction.
Preferably, fixedly connected with installation axle on the dead lever, the fixed installation screw thread that is equipped with on the installation axle can be installed and dismantled fast.
Preferably, the limiting device comprises a limiting plate, the limiting plate is fixedly connected to the lantern ring, a limiting cavity is arranged in the limiting plate, a limiting rod is movably inserted in the limiting cavity, a limiting sheet is fixedly connected to the limiting rod and is arranged in the limiting cavity in a sliding manner, a plurality of second springs are fixedly connected to one side of the limiting sheet, one end of each second spring is fixedly connected to the inner wall of the limiting cavity, sliding cavities are formed in the peripheral side walls of the fixing rod, the sliding cavity array is arranged on the side walls of the fixing rod, a third spring is fixedly connected to the bottom of the inner wall of the sliding cavity, one end of each third spring is fixedly connected with a sliding sheet, one end of each sliding sheet is fixedly connected with a limiting plug, the limiting plug can be inserted into the limiting cavity and can limit the position of the lantern ring on the fixing rod, so that, when the position of the lantern ring needs to be changed, the limiting rod is pressed down, the limiting plug can retract, the position of the lantern ring is adjusted, and the position of the hole expansion plate is changed.
Preferably, the limiting plug penetrates through the sliding chamber, one end of the limiting plug abuts against the bottom of the limiting rod, and the limiting rod can enable the limiting plug to retract.
Preferably, a plurality of cutting edges are fixedly connected to the bottom of the drill, so that the drilling efficiency can be improved.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the drill bit can be retracted when the connecting block is used for drilling and the like, and the reaming rod is driven to move outwards, so that the diameter of the drilled hole can be increased, the problem of drill bit jamming is avoided, and the drill bit is forcibly dragged to be easily damaged and cannot be used, so that the construction process is influenced;
2. the position of the hole expanding plate can be changed by adjusting the position of the sleeve ring, the diameter of the drilled hole can be adjusted according to requirements, the drill bit does not need to be replaced again, and the construction efficiency can be improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the structure of the present invention;
FIG. 3 is a schematic view of the structure of the present invention at the enlarged part A in FIG. 1;
FIG. 4 is a schematic sectional view of the structure of the position limiting device of the present invention;
in the figure: 1. a drill stem; 2. a fixed shaft; 3. a limiting device; 11. a drill bit; 111. a first stopper; 12. a hole expanding rod; 121. a first reamer blade; 13. a connecting shaft; 131. a pin rod; 14. connecting blocks; 15. a movable chamber; 151. a first spring; 16. a limiting groove; 21. a connecting plate; 211. a third limiting block; 22. fixing the rod; 23. installing a shaft; 24. a movable rod; 241. a first hinge block; 242. a second hinge block; 25. a collar; 251. a third limiting block; 26. expanding the hole plate; 261. a first fixed block; 262. a second fixed block; 263. a second reamer blade; 31. a limiting chamber; 311. a second spring; 32. a limiting rod; 321. a limiting sheet; 33. a limit plug; 331. sliding blades; 34. a sliding chamber; 341. a third spring; 35. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a variable-diameter drill bit comprises a drill rod 1, a movable cavity 15 is formed in the drill rod 1, a first spring 151 is fixedly connected to the bottom of the inner wall of the movable cavity 15, a connecting block 14 is fixedly connected to the bottom of the first spring 151, the connecting block 14 is slidably arranged in the movable cavity 15, a drill bit 11 is fixedly connected to the bottom of the connecting block 14, a plurality of first limiting blocks 111 are fixedly connected to the drill bit 11, a hole expanding rod 12 is hinged to the first limiting blocks 111, a plurality of first hole expanding blades 121 are fixedly connected to the hole expanding rod 12, a connecting shaft 13 is hinged to the hole expanding rod 12, a plurality of limiting grooves 16 are formed in the side wall of the drill rod 1, a pin rod 131 is fixedly connected between the inner walls at the upper ends of the limiting grooves 16, the connecting shaft 13 is rotatably arranged on the pin rod 131, one side of the hole expanding rod 12 abuts against the inner wall of the limiting groove 16, the drill bit 11 can retract when hard rocks and the like occur during drilling, the connecting block 14 can be driven to move in the movable cavity 15, thereby compress first spring 151, can make reaming pole 12 move, make reaming pole 12 pop out from spacing groove 16, increase the drilling diameter, avoid accomplishing drilling 11 card of drill bit when needing to take out drill bit 11 in the rock, the condition of sticking the drill can only be taken out through the mode of pulling out by force, and can not guarantee successfully, thereby lead to drill bit 11 to damage or split in the rock, not only can cause economic loss, also can influence fixedly connected with fixed axle 2 on the progress drilling rod 1 of construction, fixedly connected with dead lever 22 on the fixed axle 2, it is equipped with lantern ring 25 to slide on the dead lever 22, a plurality of stop device 3 of fixedly connected with on the lantern ring 25.
A plurality of third limiting blocks 251 are fixedly connected to the side wall of the lantern ring 25, a first hinging block 241 is hinged to the third limiting blocks 251, a movable rod 24 is fixedly connected to one side of the first hinging block 241, a second hinging block 242 is fixedly connected to one end of the movable rod 24, an expanding plate 26 is hinged to the second hinging block 242, a second fixing block 262 is fixedly connected to the upper end of the inner wall of the expanding plate 26, the second hinging block 242 and the second fixing block 262 are hinged to each other, a plurality of second limiting blocks 211 are fixedly connected to the side wall of the bottom of the fixed shaft 2, one end of each second limiting block 211 is hinged to the connecting plate 21, one end of the connecting plate 21 is hinged to the bottom of the inner wall of the expanding plate 26, a first fixing block 261 is fixedly connected to the bottom of the inner wall of the expanding plate 26, the first fixing block 261 and the connecting plate 21 are hinged to each other, a plurality of second expanding blades 263 are fixedly connected to the side wall of the expanding plate 26, when expanding is needed, the position of the lantern ring 25 can be manually adjusted, can change movable rod 24's angle to can make reaming board 26 follow connecting plate 21 and rotate, change reaming board 26's angle, increase the diameter of drilling, need not change drill bit 11 again, can improve the efficiency of construction.
Fixedly connected with installation axle 23 on the dead lever 22, the fixed installation screw thread that is equipped with on the installation axle 23 can install the dismantlement fast.
The limiting device 3 comprises a limiting plate 35, the limiting plate 35 is fixedly connected to the lantern ring 25, a limiting cavity 31 is formed in the limiting plate 35, a limiting rod 32 is movably inserted in the limiting cavity 31, a limiting sheet 321 is fixedly connected to the limiting rod 32, the limiting sheet 321 is slidably arranged in the limiting cavity 31, one side of the limiting sheet 321 is fixedly connected with a plurality of second springs 311, one end of each second spring 311 is fixedly connected to the inner wall of the limiting cavity 31, the peripheral side walls of the fixing rod 22 are respectively provided with a sliding cavity 34, the sliding cavities 34 are arranged on the side walls of the fixing rod 22 in an array mode, the bottom of the inner wall of each sliding cavity 34 is fixedly connected with a third spring 341, one end of each third spring 341 is fixedly connected with a sliding sheet 331, one end of each sliding sheet 331 is fixedly connected with a limiting plug 33, the limiting plug 33 can be inserted in the limiting cavity 31, the position of the lantern ring 25 on the fixing rod 22 can be limited, and the position of the orifice plate 26 can be fixed, when the position of the collar 25 on the fixing rod 22 needs to be changed, the limiting rod 32 is pressed down, the limiting plug 33 can be retracted, the position of the collar 25 is adjusted, and the position of the orifice plate 26 is changed.
The limit plug 33 penetrates through the sliding chamber 34, one end of the limit plug 33 abuts against the bottom of the limit rod 32, and the limit rod 32 can enable the limit plug 33 to retract.
The bottom of the drill 11 is fixedly connected with a plurality of cutting edges, so that the drilling efficiency can be improved.
The working principle is as follows: firstly, the variable-diameter drill bit is installed on the drilling equipment through the installation shaft 23, then the drilling equipment can drive the variable-diameter drill bit to rotate, the drill bit 11 can retract when the drilling equipment encounters hard rocks and the like, the connecting block 14 can be driven to move in the movable chamber 15, so that the first spring 151 is compressed, the reaming rod 12 can move, the reaming rod 12 is popped out from the limiting groove 16, the drilling diameter is increased, the situation that the drill bit 11 is clamped in the rocks when the drill bit 11 needs to be taken out when the drilling is finished is avoided, the drill bit can only be taken out in a forced pulling-out mode under the condition of clamping, the success cannot be guaranteed, the drill bit 11 is damaged or broken in the rocks, economic loss can be caused, the construction progress can also be influenced, then when the reaming is needed, the position of the lantern ring 25 can be manually adjusted, the angle of the movable rod 24 can be changed, and the reaming plate 26 can rotate along with the connecting plate 21, the angle of the hole expanding plate 26 is changed, the diameter of the drilled hole is increased, the drill bit 11 does not need to be replaced again, and the construction efficiency can be improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A variable diameter drill bit, comprising a drill rod (1), characterized in that: the drill rod is characterized in that a movable cavity (15) is formed inside the drill rod (1), a first spring (151) is fixedly connected to the bottom of the inner wall of the movable cavity (15), a connecting block (14) is fixedly connected to the bottom of the first spring (151), the connecting block (14) is slidably arranged in the movable cavity (15), a drill bit (11) is fixedly connected to the bottom of the connecting block (14), a plurality of first limiting blocks (111) are fixedly connected to the drill bit (11), a hole expanding rod (12) is hinged to the first limiting blocks (111), a plurality of first hole expanding blades (121) are fixedly connected to the hole expanding rod (12), a connecting shaft (13) is hinged to the hole expanding rod (12), a plurality of limiting grooves (16) are formed in the side wall of the drill rod (1), a pin rod (131) is fixedly connected to the inner walls of the upper ends of the limiting grooves (16), and the connecting shaft (13) is rotatably arranged on the pin rod, one side of the reaming rod (12) is abutted to the inner wall of the limiting groove (16), a fixing shaft (2) is fixedly connected to the drill rod (1), a fixing rod (22) is fixedly connected to the fixing shaft (2), a sleeve ring (25) is slidably arranged on the fixing rod (22), and a plurality of limiting devices (3) are fixedly connected to the sleeve ring (25).
2. A variable diameter drill bit according to claim 1, wherein: the side wall of the lantern ring (25) is fixedly connected with a plurality of third limiting blocks (251), the third limiting blocks (251) are hinged to first hinged blocks (241), one side of each first hinged block (241) is fixedly connected with a movable rod (24), one end of each movable rod (24) is fixedly connected with a second hinged block (242), each second hinged block (242) is hinged to an expanded hole plate (26), the upper end of the inner wall of each expanded hole plate (26) is fixedly connected with a second fixed block (262), each second hinged block (242) is hinged to the corresponding second fixed block (262), the side wall of the bottom of the fixed shaft (2) is fixedly connected with a plurality of second limiting blocks (211), one end of each second limiting block (211) is hinged to a connecting plate (21), one end of each connecting plate (21) is hinged to the bottom of the inner wall of each expanded hole plate (26), and the bottom of the inner wall of each expanded hole plate (26) is fixedly connected with a first fixed block (261), the first fixing block (261) is hinged to the connecting plate (21), and a plurality of second reaming edges (263) are fixedly connected to the side wall of the reaming plate (26).
3. A variable diameter drill bit according to claim 1, wherein: the fixing rod (22) is fixedly connected with an installation shaft (23), and installation threads are fixedly arranged on the installation shaft (23).
4. A variable diameter drill bit according to claim 1, wherein: the limiting device (3) comprises a limiting plate (35), the limiting plate (35) is fixedly connected to the sleeve ring (25), a limiting cavity (31) is formed in the limiting plate (35), a limiting rod (32) is inserted in the limiting cavity (31) in an movable manner, a limiting piece (321) is fixedly connected to the limiting rod (32), the limiting piece (321) is arranged in the limiting cavity (31) in a sliding manner, a plurality of second springs (311) are fixedly connected to one side of the limiting piece (321), one end of each second spring (311) is fixedly connected to the inner wall of the limiting cavity (31), sliding cavities (34) are formed in the peripheral side walls of the fixing rod (22), an array of the sliding cavities (34) is arranged on the side wall of the fixing rod (22), a third spring (341) is fixedly connected to the bottom of the inner wall of the sliding cavity (34), and a sliding piece (331) is fixedly connected to one end of the third spring (341), one end of the sliding sheet (331) is fixedly connected with a limit plug (33).
5. A variable diameter drill bit according to claim 4, wherein: the limiting plug (33) penetrates through the sliding chamber (34), and one end of the limiting plug (33) abuts against the bottom of the limiting rod (32).
6. A variable diameter drill bit according to claim 1, wherein: the bottom of the drill bit (11) is fixedly connected with a plurality of cutting edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020427.8U CN214196191U (en) | 2020-12-15 | 2020-12-15 | Variable-diameter drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020427.8U CN214196191U (en) | 2020-12-15 | 2020-12-15 | Variable-diameter drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN214196191U true CN214196191U (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023020427.8U Active CN214196191U (en) | 2020-12-15 | 2020-12-15 | Variable-diameter drill bit |
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| CN (1) | CN214196191U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958327A (en) * | 2021-10-20 | 2022-01-21 | 中铁六局集团有限公司 | Shield tunneling machine underground diaphragm wall construction device and construction method thereof |
| CN114542798A (en) * | 2022-01-27 | 2022-05-27 | 湖北省工业建筑集团有限公司 | Integral type drilling reaming device is used in construction of DN1200HDPE major diameter non-excavation dilatory pipe |
| CN117266752A (en) * | 2023-11-10 | 2023-12-22 | 广东建星建造集团有限公司 | Inertial built-in gear reaming anchor rod drill bit device |
| CN117588166A (en) * | 2024-01-04 | 2024-02-23 | 中煤科工集团沈阳研究院有限公司 | Coal mine anti-reflection pre-pumping device |
| CN118327460A (en) * | 2024-06-07 | 2024-07-12 | 青岛滨海建设集团有限公司 | Piling device for building construction and application method thereof |
-
2020
- 2020-12-15 CN CN202023020427.8U patent/CN214196191U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958327A (en) * | 2021-10-20 | 2022-01-21 | 中铁六局集团有限公司 | Shield tunneling machine underground diaphragm wall construction device and construction method thereof |
| CN113958327B (en) * | 2021-10-20 | 2024-03-29 | 中铁六局集团有限公司 | Construction device and construction method for shield tunneling machine underground diaphragm wall |
| CN114542798A (en) * | 2022-01-27 | 2022-05-27 | 湖北省工业建筑集团有限公司 | Integral type drilling reaming device is used in construction of DN1200HDPE major diameter non-excavation dilatory pipe |
| CN114542798B (en) * | 2022-01-27 | 2022-09-02 | 湖北省工业建筑集团有限公司 | Integral type drilling reaming device is used in construction of DN1200HDPE major diameter non-excavation dilatory pipe |
| CN117266752A (en) * | 2023-11-10 | 2023-12-22 | 广东建星建造集团有限公司 | Inertial built-in gear reaming anchor rod drill bit device |
| CN117266752B (en) * | 2023-11-10 | 2024-04-26 | 广东建星建造集团有限公司 | Inertial built-in gear reaming anchor rod drill bit device |
| CN117588166A (en) * | 2024-01-04 | 2024-02-23 | 中煤科工集团沈阳研究院有限公司 | Coal mine anti-reflection pre-pumping device |
| CN118327460A (en) * | 2024-06-07 | 2024-07-12 | 青岛滨海建设集团有限公司 | Piling device for building construction and application method thereof |
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