CN212337182U - Core rod for rotary drilling rod capable of preventing square head from falling - Google Patents
Core rod for rotary drilling rod capable of preventing square head from falling Download PDFInfo
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- CN212337182U CN212337182U CN202021788253.7U CN202021788253U CN212337182U CN 212337182 U CN212337182 U CN 212337182U CN 202021788253 U CN202021788253 U CN 202021788253U CN 212337182 U CN212337182 U CN 212337182U
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- square head
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- lifting lug
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Abstract
The utility model discloses a core rod for a rotary drilling rod, which can prevent the square head from falling, comprising a core rod body, a square head fixedly connected with one end of the core rod body, a lifting lug fixedly connected with the other end of the core rod body and an anti-falling device connected between the square head and the lifting lug; the square head comprises a square head square, a square head disc and a square head neck, one end of the square head neck is fixedly connected with a mandrel in a welding way, and the square head is connected with the core rod tube body through the mandrel and is fixedly welded; the anti-falling device comprises a chain and a steel wire rope connected with the chain, a counter bore is formed in the middle of a square head neck end of the square head, one end of the counter bore extends to the square head, a pin shaft hole radially penetrating through the counter bore is formed in the square head, a pin shaft matched with the counter bore is arranged in the pin shaft hole, one end of the chain is connected with the square head side of the square head through the pin shaft, and the end, far away from the chain, of the steel wire rope is connected with a lifting lug. The utility model discloses can avoid falling at core festival pole fracture rear end, and be convenient for square head, drill bit take out from drilling.
Description
Technical Field
The utility model relates to a dig the drilling rod field soon, specifically indicate a can prevent that the square head from falling dig core festival pole for the drilling rod soon.
Background
The rotary drilling rig is a construction machine suitable for hole forming operation in building foundation engineering. The rotary drilling rod is an important component of the rotary drilling rig, the rotary drilling rig generally comprises a plurality of sections of sleeves which are embedded together for use, the drill rod with the largest radius is a first section of drill rod, the drill rod with the second largest radius is a second section of drill rod, and the like. Wherein the minimum core festival pole of radius is being connected with the square head stretching out the end, dig the drill bit soon and dig the drilling rod soon through the square head and be connected and dig work soon, and in the course of the work core festival pole need bear huge interior external pressure, distortion, bending and vibration, current core festival pole is in the use, the square head side and the square head dish department of square head fracture easily, the condition of splitting also can appear in being close to the square head end of core festival pole body, and then the square head falls, lead to the downthehole malignant accident of falling of the drill bit of being connected with the square head.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the defect of above-mentioned technique, a core festival pole for the drilling rod is dug soon that can prevent that the square head from falling is provided.
In order to solve the technical problem, the utility model provides a technical scheme is a can prevent that the square head from falling dig core festival pole for the drilling rod soon: the anti-falling device comprises a core rod pipe body, a square head fixedly connected to one end of the core rod pipe body, a lifting lug fixedly connected to the other end of the core rod pipe body, and an anti-falling device connected between the square head and the lifting lug; the square head comprises a square head square, a square head disc and a square head neck, the square head disc is positioned between the square head square and the square head neck, the end of the square head neck, far away from the square head disc, is fixedly connected with a mandrel in a welding manner, and the square head is connected with the core rod tube body through the mandrel and is fixedly welded; the anti-falling device comprises a chain and a steel wire rope connected with the chain, a counter bore is formed in the middle of a square head neck end of the square head, one end of the counter bore extends to the square head, a pin shaft hole radially penetrating through the counter bore is formed in the square head, a pin shaft matched with the counter bore is arranged in the pin shaft hole, one end of the chain is connected with the square head side of the square head through the pin shaft, and the end, far away from the chain, of the steel wire rope is connected with a lifting lug.
As an improvement, the lifting lug is provided with a first connecting hole, one end of the steel wire rope is connected with the lifting lug through the first connecting hole and knotted through the lock catch, and the other end of the steel wire rope is connected with the end part chain buckle of the chain and knotted through the lock catch.
As an improvement, 2 second connecting holes are arranged on the square head, and 2 second connecting holes are respectively arranged on the upper surface, the lower surface, the left surface and the right surface and are in a cross shape.
As an improvement, a lifting lug baffle is arranged on the lifting lug.
Compared with the prior art, the utility model the advantage lie in: the utility model discloses can avoid the core festival pole at the first fracture of square, or the emergence that the square head falls when the core festival pole body splits to guarantee at core festival pole breaking occur the back, the drill bit of being connected with the square head can not fall, the square head of being convenient for moreover, the drill bit takes out from drilling.
Drawings
Fig. 1 is a schematic structural view of a core rod for a rotary drilling rod, which can prevent the square head from falling.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Fig. 3 is an enlarged schematic view of fig. 1 at B.
As shown in the figure: 1. core section pole body, 2, lug, 3, square head side, 4, square head dish, 5, square head neck, 6, dabber, 7, chain, 8, wire rope, 9, counter bore, 10, round pin shaft hole, 11, round pin axle, 12, first connecting hole, 13, second connecting hole, 14, lug baffle, 15, first welding seam, 16, second welding seam.
Detailed Description
The following description will be made in detail with reference to the accompanying drawings, which is for a rotary drilling rod core rod capable of preventing the square head from falling.
With reference to the attached drawings 1-3, the core section rod for the rotary drilling rod capable of preventing the square head from falling comprises a core section rod pipe body 1, the square head fixedly connected to one end of the core section rod pipe body 1, a lifting lug 2 fixedly connected to the other end of the core section rod pipe body 1 and an anti-falling device connected between the square head and the lifting lug 2; the square head comprises a square head square 3, a square head disc 4 and a square head neck 5, the square head disc 4 is positioned between the square head square 3 and the square head neck 5, the end, far away from the square head disc 4, of the square head neck 5 is fixedly connected with a mandrel 6 in a welding mode, and the square head is connected with the core joint rod tube body 1 through the mandrel 6 and is fixedly welded; the anti-falling device comprises a chain 7 and a steel wire rope 8 connected with the chain 7, a counter bore 9 is arranged in the middle of the square head neck 5 end of the square head, one end of the counter bore 9 extends to the square head 3, the square head 3 is provided with a pin shaft hole 10 which radially penetrates through the counter bore 9, a pin shaft 11 matched with the pin shaft hole 10 is arranged in the pin shaft hole 10, one end of the chain 7 is connected with the square head 3 part of the square head through the pin shaft 11, and the end, far away from the chain 7, of the steel wire rope 8 is connected with the lifting lug 2.
The lifting lug 2 is provided with a first connecting hole 12, one end of the steel wire rope 8 is connected with the lifting lug 2 through the first connecting hole 12 and is knotted through a lock catch, and the other end of the steel wire rope 8 is connected with the end part chain buckle of the chain 7 and is knotted through the lock catch.
The square head 3 is provided with 2 second connecting holes 13, 2 the second connecting holes 13 are respectively arranged on the upper surface and the lower surface and the left surface and the right surface and are in a cross shape.
The lifting lug 2 is provided with a lifting lug baffle plate 14.
The utility model discloses when concrete implementation, when core festival pole at the square head fracture, or when core festival pole body fracture, anti-falling device can provide the pulling force for the square head side of square head to guarantee that square head and drill bit can not fall, promote the lug, can take out square head and drill bit from drilling.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (4)
1. The utility model provides a can prevent core festival pole for drilling rod is dug soon that square head falls which characterized in that: the anti-falling device comprises a core rod pipe body (1), a square head fixedly connected to one end of the core rod pipe body (1), a lifting lug (2) fixedly connected to the other end of the core rod pipe body (1), and an anti-falling device connected between the square head and the lifting lug (2);
the square head comprises a square head square (3), a square head disc (4) and a square head neck (5), the square head disc (4) is positioned between the square head square (3) and the square head neck (5), the end, far away from the square head disc (4), of the square head neck (5) is fixedly connected with a mandrel (6) in a welding mode, and the square head is connected with the core section rod pipe body (1) through the mandrel (6) and is fixedly welded;
the anti-falling device comprises a chain (7) and a steel wire rope (8) connected with the chain (7), wherein a counter bore (9) is arranged in the middle of the square head neck (5) end of the square head, one end of the counter bore (9) extends to the square head (3), the square head (3) is provided with a pin shaft hole (10) which radially penetrates through the counter bore (9), a pin shaft (11) matched with the pin shaft hole (10) is arranged in the pin shaft hole (10), one end of the chain (7) is connected with the square head (3) part of the square head through the pin shaft (11), and the end, far away from the chain (7), of the steel wire rope (8) is connected with the lifting lug (2).
2. The core rod for the rotary drilling rod capable of preventing the square head from falling according to claim 1, which is characterized in that: the lifting lug (2) is provided with a first connecting hole (12), one end of the steel wire rope (8) is connected with the lifting lug (2) through the first connecting hole (12) and is knotted through a lock catch, and the other end of the steel wire rope (8) is connected with the end part of the chain (7) in a chain buckle mode and is knotted through the lock catch.
3. The core rod for the rotary drilling rod capable of preventing the square head from falling according to claim 1, which is characterized in that: the square head (3) is provided with 2 second connecting holes (13), 2 the second connecting holes (13) are respectively arranged on the upper surface and the lower surface and the left surface and the right surface, and are in a cross shape.
4. The core rod for the rotary drilling rod capable of preventing the square head from falling according to claim 1, which is characterized in that: and a lifting lug baffle (14) is arranged on the lifting lug (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021788253.7U CN212337182U (en) | 2020-08-25 | 2020-08-25 | Core rod for rotary drilling rod capable of preventing square head from falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021788253.7U CN212337182U (en) | 2020-08-25 | 2020-08-25 | Core rod for rotary drilling rod capable of preventing square head from falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337182U true CN212337182U (en) | 2021-01-12 |
Family
ID=74071042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021788253.7U Active CN212337182U (en) | 2020-08-25 | 2020-08-25 | Core rod for rotary drilling rod capable of preventing square head from falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212337182U (en) |
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2020
- 2020-08-25 CN CN202021788253.7U patent/CN212337182U/en active Active
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