CN215804395U - Multi-section drill rod - Google Patents
Multi-section drill rod Download PDFInfo
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- CN215804395U CN215804395U CN202120302230.9U CN202120302230U CN215804395U CN 215804395 U CN215804395 U CN 215804395U CN 202120302230 U CN202120302230 U CN 202120302230U CN 215804395 U CN215804395 U CN 215804395U
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Abstract
The utility model discloses a multi-section drill rod, which comprises a plurality of sections of drill rods which are sequentially spliced, wherein a multi-lock structure or a mechanical lock structure is adopted between two adjacent sections of drill rods, and the occurrence frequency of the multi-lock structure or the mechanical lock structure is not less than one. According to the utility model, through the matching of the multi-lock structure and the mechanical lock structure, the outer diameter of the drill rod is ensured to be smaller, such as the maximum outer diameter of a steel pipe of only 650mm, even if the wall thickness of the drill rod is reduced, enough strength is still maintained, enough torsional force and enough pressure can be borne, the market blank of more than five telescopic drill rods with smaller outer diameter of the drill rod is filled, the requirements on construction and construction with strict requirements on the total length of the rotary drilling drill rod and requirements on the drilling depth can be better met, and deeper drilling operation can be carried out.
Description
Technical Field
The utility model relates to a multi-section drill rod, and belongs to the technical field of drill rods.
Background
A plurality of sections of telescopic drill rods are important working parts of the drilling machine, and a rotary bucket or a short spiral drill bit can be arranged on a square head at the bottom end of a mandrel of the telescopic drill rods. At present, under the condition that the diameter of a drill rod is smaller, for example, the drill rod with the specification of 650mm can only stretch out and draw back by five sections, and the requirement of the existing building construction unit on the rotary digging depth cannot be met.
Therefore, the utility model provides a multi-section drill rod, which can realize the expansion and contraction of more than five sections of drill rods under the condition of smaller diameter.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a multi-section drill rod, which realizes the multi-section expansion of the drill rod with a smaller diameter.
In order to achieve the purpose, the multi-section drill rod comprises a plurality of sections of drill rods which are sequentially inserted, a multi-lock structure or a mechanical lock structure is adopted between two adjacent sections of drill rods, and the occurrence frequency of the multi-lock structure or the mechanical lock structure is not less than one.
Further, the drilling rod includes drilling rod and the most inboard core drilling rod in first section drilling rod, a plurality of sections, drilling rod and core drilling rod all include the external diameter of steel pipe and every steel pipe and reduce gradually in first section drilling rod, a plurality of sections, the rear end of core drilling rod is provided with the elevator, the part of elevator at least two-thirds is located the drilling rod, all is equipped with preceding anti-channeling structure or back anti-channeling structure on the interior drilling rod, the number of times that preceding anti-channeling structure or back anti-channeling structure appear all is not less than one.
Furthermore, the steel pipe of the core drill rod is connected with the elevator through a pin shaft, and the elevator is sleeved with a gap ring.
Further, the elevator comprises a rotary joint connected with a lifting lug at the rear end of the steel pipe of the core drill rod through a pin shaft, a connecting cylinder connected with the rotary joint through a locking nut, and a fixed joint partially inserted in the connecting cylinder and connected through a bolt, wherein a baffle mounting groove is formed in the fixed joint, and a baffle used for preventing the notch ring from being separated from the baffle mounting groove is mounted in the baffle mounting groove.
Furthermore, the inner drill rod has six sections, namely a second section of drill rod, a third section of drill rod, a fourth section of drill rod, a fifth section of drill rod, a sixth section of drill rod and a seventh section of drill rod.
Further, the mechanical lock structure comprises outer keys arranged on the outer wall of each steel pipe of the first section of drill rod, the second section of drill rod, the third section of drill rod, the fourth section of drill rod, the fifth section of drill rod and the sixth section of drill rod, inner key plates matched with the adjacent outer keys are arranged on the inner wall of the front end of each steel pipe of the first section of drill rod, the second section of drill rod, the third section of drill rod, the fourth section of drill rod and the fifth section of drill rod, a plurality of pressing blocks are arranged on the outer keys, and the pressing blocks are matched with the corresponding inner key plates.
Furthermore, the multi-locking structure comprises a multi-locking key strip arranged on the outer wall of each steel pipe of the seventh section of drill rod and the core drill rod, and a tooth-shaped inner key plate matched with the multi-locking key strip is arranged on the inner wall of the front end of each steel pipe of the sixth section of drill rod and the seventh section of drill rod.
Further, the rear anti-channeling structure comprises a rear anti-channeling disc arranged at the rear end of each steel pipe of the second section of drill rod, the third section of drill rod and the fourth section of drill rod.
Further, the front anti-channeling structure comprises front anti-channeling structures arranged at the front ends of the steel pipes of the fifth section of drill pipe, the sixth section of drill pipe and the seventh section of drill pipe.
Furthermore, the front end of the core drill rod is provided with a water discharging disc and a connecting square head, the connecting square head is positioned on one side, away from the core drill rod, of the water discharging disc, a spring shock pad is arranged between the water discharging disc and the connecting square head, and a guide block is arranged between the water discharging disc and the spring shock pad.
Compared with the prior art, the utility model has the beneficial effects that:
1. through the matching of the multi-lock structure and the mechanical lock structure, the outer diameter of the drill rod is ensured to be smaller, such as the maximum outer diameter of a steel pipe of only 650mm, even if the wall thickness of the drill rod is reduced, enough strength is still kept, enough torsional force and enough pressure can be borne, the market blank of more than five telescopic drill rods with smaller outer diameter of the drill rod is filled, the requirements on construction and construction with strict requirements on the total length of the rotary drilling drill rod and requirements on the drilling depth can be better met, and deeper drilling operation is carried out;
2. the pressurizing blocks and the outer keys jointly form a plurality of pressurizing and locking sections, and the inner key plate is moved to different pressurizing and locking sections by controlling the rotation and the lifting of the drill rod, so that sufficient torsional force and pressure are provided for the drill rod; the multi-locking key strips are meshed with the tooth-shaped inner key plate, and the meshing positions of the tooth-shaped inner key plate and the multi-locking key strips can be changed by controlling the rotation and the lifting of the drill rod, so that the extending distance of the drill rod is changed, and the torsional force and the pressure are provided for the drill rod;
3. by arranging the rear anti-channeling disc, when the inner drill rod moves to a corresponding position, the rear anti-channeling disc can block the inner drill rod, so that the middle drill rod is prevented from emerging from the rear end of the drill rod;
4. prevent scurrying before through setting up, preceding prevent scurrying can prevent that middle drilling rod from rising the pole, also can play the effect of protection steel pipe mouth of pipe or many lock key strips simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a front anti-channeling and mouth guard ring of the front end of a multi-section drill pipe at a viewing angle A in the utility model;
FIG. 3 is a cross-sectional view at B of the present invention;
FIG. 4 is a schematic structural view of a sixth section of drill pipe according to the present invention;
FIG. 5 is a schematic structural view of a seventh section of drill pipe according to the present invention;
FIG. 6 is a schematic structural view of the core drill rod of the present invention;
FIG. 7 is a perspective view of the elevator of the present invention;
FIG. 8 is a partial perspective view of a seventh section of drill pipe according to the present invention;
FIG. 9 is a schematic illustration of the front tamper-resistant fit of the present invention;
fig. 10 is a structural view of a rear tamper-proof disc of the present invention.
In the figure: 1. the elevator comprises an elevator, 2, a first flange, 3, a second flange, 4, a rubber shock absorption block, 5, a pressurizing block, 6, an outer key, 7, a protective plate, 8, a water discharge disc, 9, a guide block, 10, a spring shock absorption pad, 11, a connecting square head, 12, a steel pipe, 13, a mouth protecting ring, 14, a baffle ring, 15, a movable ring, 16, a multi-locking key strip, 17, a notch ring, 18, an elevator pin shaft, 19, a tooth-shaped inner key plate, 20, an inner key plate, 21, front anti-channeling, 22, a rear anti-channeling disc, 23, a rotary joint, 24, a connecting cylinder, 25, a fixed joint, 26, a bolt, 27 and a baffle mounting groove.
Detailed Description
The technical solutions in the implementation of the present invention will be made clear and fully described below with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 10, on the basis of fig. 1, "front" and "rear" described in the present invention refer to left and right sides in fig. 1, i.e., a lower end and an upper end in a working state of the drill rod. The multi-section drill rod provided by the embodiment of the utility model comprises a plurality of sections of drill rods which are sequentially inserted, a multi-lock structure or a mechanical lock structure is adopted between two adjacent sections of drill rods, the occurrence frequency of the multi-lock structure or the mechanical lock structure is not less than one, and the outer diameter of the drill rod at the outermost layer is 650 mm. Through the cooperation of many locks structure and mechanical lock structure, guaranteed under 650 mm's the biggest steel pipe 12 external diameter, even if the drilling rod has still kept sufficient intensity under the condition that the wall thickness reduces, can bear sufficient torsional force and pressure, filled the market blank of scalable more than five sections drilling rods under the less drilling rod external diameter, the demand that can be better satisfy to digging drilling rod overall length strictly soon, have the construction that requires to bore the depth carries out deeper operation of punching.
Further, the drilling rod includes drilling rod and the most inboard core drilling rod in first section drilling rod, a plurality of sections, drilling rod and core drilling rod all include steel pipe 12 and every steel pipe 12's external diameter reduces gradually in first section drilling rod, a plurality of sections, the rear end of core drilling rod is provided with elevator 1, elevator 1 at least two-thirds's part is located the drilling rod, all is equipped with preceding anti-channeling structure or back anti-channeling structure on the interior drilling rod, the number of times that preceding anti-channeling structure or back anti-channeling structure appear all is not less than one. The rear end of the first section of drill rod is provided with a second flange 3, one side, away from the first section of drill rod, of the second flange 3 is provided with a first flange 2, a rubber damping block 4 is arranged between the first flange 2 and the second flange 3, and inertia force between the drill rod and the power head can be buffered.
Further, the steel pipe 12 of the core drill rod is connected with the elevator 1 through a pin shaft, and the elevator 1 is sleeved with a gap ring 17. The notched ring 17 can solve the problem of the difference in the diameters of the steel pipes 12 of the elevator 1 and the core drill rod, and can also prevent the core drill rod from falling off.
Further, the elevator 1 comprises a rotary joint 23 connected with a lifting lug at the rear end of the steel pipe 12 of the core drill rod through a pin shaft, a connecting cylinder 24 connected with the rotary joint 23 through a locking nut, and a fixed joint 25 partially inserted into the connecting cylinder 24 and connected through a bolt 26, wherein a baffle mounting groove 27 is formed in the fixed joint 25, and a baffle for preventing the notch ring 17 from being separated is mounted in the baffle mounting groove 27. The fixed joint 25 is used for connecting with a lifting lug of a drilling machine, as can be seen from fig. 7, the fixed joint 25, the rotary joint 23 and the connecting cylinder 24 have the same diameter, the notch ring 17 is sleeved on the three components, and after the baffle is arranged on the baffle installation groove 27, the notch ring 17 can be blocked, and the notch ring 17 cannot be separated from the end of the fixed joint 25.
Furthermore, the inner drill rod has six sections, namely a second section of drill rod, a third section of drill rod, a fourth section of drill rod, a fifth section of drill rod, a sixth section of drill rod and a seventh section of drill rod. The whole drill rod has eight sections, and the outer diameter of the first section of the outermost drill rod is only 650 mm.
Further, the mechanical locking structure comprises an outer key 6 arranged on the outer wall of each steel pipe 12 of the first section of drill rod, the second section of drill rod, the third section of drill rod, the fourth section of drill rod, the fifth section of drill rod and the sixth section of drill rod, an inner key plate 20 matched with the adjacent outer key 6 is arranged on the inner wall of the front end of each steel pipe 12 of the first section of drill rod, the second section of drill rod, the third section of drill rod, the fourth section of drill rod and the fifth section of drill rod, a plurality of pressing blocks 5 are arranged on each outer key 6, and the pressing blocks 5 are matched with the corresponding inner key plates 20. As can be seen from fig. 3 and 4, the pressure block 5 and the outer key 6 together form several sections of pressure-locked sections, and the inner key plate is moved to different pressure-locked sections by controlling the rotation and lifting of the drill rod, so that sufficient torsional force and pressure can be provided for the drill rod. Meanwhile, a guard plate 7 is arranged between the outer keys 6, the guard plate 7 can increase the strength of the outer keys 6, the outer keys 6 are not easy to damage and deform, and the pipe orifice of the steel pipe 12 can be protected from being torn easily.
Further, the multi-locking structure comprises a multi-locking key strip 16 arranged on the outer wall of each steel pipe 12 of the seventh section of drill rod and the core drill rod, and a tooth-shaped inner key plate 19 matched with the multi-locking key strip 16 is arranged on the inner wall of the front end of each steel pipe 12 of the sixth section of drill rod and the seventh section of drill rod. As can be seen from fig. 5, 6 and 8, the multi-locking keybar 16 has a plurality of gear sections, which enable the multi-locking keybar 16 to be meshed with the toothed inner keyplate 19, and the meshing position of the toothed inner keyplate 19 and the multi-locking keybar 16 can be changed by controlling the rotation and lifting of the drill rod, so that the extending distance of the drill rod can be changed, and the torsional force and the pressure can be provided for the drill rod.
Further, as shown in fig. 10, the rear tamper-proof structure includes a rear tamper-proof disc 22 provided at a rear end of each of the steel pipes 12 of the second, third and fourth sections of drill pipe. The rear anti-channeling disk 22 is arranged inside the corresponding steel pipe 12, and through the arrangement of the rear anti-channeling disk 22, when the inner drill rod moves to a corresponding position, the rear anti-channeling disk 22 can block the inner drill rod, so that the middle drill rod is prevented from emerging from the rear end of the drill rod.
Further, the front anti-channeling structure includes a front anti-channeling 21 provided at a front end of each of the steel pipes 12 of the fifth, sixth and seventh drill pipes. As shown in fig. 9, the structure of the external key 6 and the pressurizing block 5 is omitted in fig. 9, and the function mode of the front anti-fleeing structure is mainly embodied, the front anti-fleeing 21 disc is in a ring shape and is welded at the front end of the drill rod, the front anti-fleeing 21 disc is matched with the corresponding inner key plate 20, the middle drill rod can be prevented from being popped out, and the function of protecting the external key 6 or the multiple locking key strips 16 can be achieved. As shown in fig. 2 and 9, the front ends of the first section of drill rod, the second section of drill rod, the third section of drill rod and the fourth section of drill rod are provided with a mouth guard ring 13, and the mouth guard ring 13 mainly plays a role in protecting the external key 6.
Furthermore, the front end of the core drill rod is provided with a water discharging disc 8 and a connecting square head 11, the connecting square head 11 is positioned on one side, far away from the core drill rod, of the water discharging disc 8, and a spring shock pad 10 is arranged between the water discharging disc 8 and the connecting square head 11. The spring shock pad 10 has good shock absorption performance, and meanwhile, the shock absorption capability is reduced or even lost due to the fact that stones are not easy to enter.
Further, a guide block 9 is arranged between the water discharging disc 8 and the spring shock pad 10. The guide block 9 can act as a pressing action on the spring cushion 10.
The outer wall of the rear end of each steel pipe 12 of the second drill rod, the third drill rod, the fourth drill rod, the fifth drill rod, the sixth drill rod and the seventh drill rod is provided with a movable ring 15 and a baffle ring 14, the baffle ring 14 can play a role in preventing the drill rods from falling, and the baffle ring 14 can also play a role in guiding the drill rods to move up and down. The movable ring 15 is able to rotate while enabling the operator to know the working condition of the drill rod by collision between the parts.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (7)
1. A multi-section drill rod is characterized by comprising a plurality of sections of drill rods which are sequentially spliced, wherein a multi-lock structure or a mechanical lock structure is adopted between two adjacent sections of drill rods, the frequency of occurrence of the multi-lock structure or the mechanical lock structure is not less than one, each drill rod comprises a first section of drill rod, a plurality of sections of inner drill rods and an innermost core drill rod, the first section of drill rod, the plurality of sections of inner drill rods and the core drill rod respectively comprise steel pipes (12), the outer diameter of each steel pipe (12) is gradually reduced, the inner drill rods are six in total and respectively comprise an outer key (6) arranged on the outer wall of each steel pipe (12) of the first section of drill rod, the second section of drill rod, the third section of drill rod, the fourth section of drill rod, the fifth section of drill rod and the sixth section of drill rod, the first section of drill rod, An inner key plate (20) matched with an adjacent outer key (6) is arranged on the inner wall of the front end of each steel pipe (12) of the second section of drill rod, the third section of drill rod, the fourth section of drill rod and the fifth section of drill rod, a plurality of pressing blocks (5) are arranged on the outer keys (6), the pressing blocks (5) are matched with the corresponding inner key plates (20), the multi-locking structure comprises a plurality of locking key strips (16) arranged on the outer walls of each steel pipe (12) of the seventh section of drill rod and the core drill rod, and a toothed inner key plate (19) matched with the plurality of locking key strips (16) is arranged on the inner wall of the front end of each steel pipe (12) of the sixth section of drill rod and the seventh section of drill rod.
2. The multi-section drill pipe as claimed in claim 1, wherein the rear end of the core drill pipe is provided with an elevator (1), at least two thirds of the elevator (1) is positioned in the drill pipe, the inner drill pipe is provided with a front anti-channeling structure or a rear anti-channeling structure, and the number of times of occurrence of the front anti-channeling structure or the rear anti-channeling structure is not less than one.
3. The multi-section drill rod as claimed in claim 2, characterized in that the steel pipe (12) of the core drill rod is connected with the elevator (1) through a pin shaft, and the elevator (1) is sleeved with a notched ring (17).
4. The multi-section drill rod as claimed in claim 3, wherein the elevator (1) comprises a rotary joint (23) connected with a lifting lug at the rear end of the steel pipe (12) of the core drill rod through a pin shaft, a connecting cylinder (24) connected with the rotary joint (23) through a locking nut, and a fixed joint (25) partially inserted into the connecting cylinder (24) and connected through a bolt (26), wherein a baffle installation groove (27) is formed in the fixed joint (25), and a baffle for preventing the notch ring (17) from being separated is installed in the baffle installation groove (27).
5. A multi-section drill pipe according to claim 2, characterized in that the rear anti-channeling structure comprises a rear anti-channeling disc (22) provided at a rear end of each steel pipe (12) of the second, third and fourth sections of drill pipe.
6. A multi-section drill pipe according to claim 2, characterized in that the forward anti-channeling structure comprises a forward anti-channeling (21) provided at a forward end of each steel pipe (12) of the fifth, sixth and seventh sections of drill pipe.
7. The multi-section drill rod as claimed in claim 1, characterized in that the front end of the core drill rod is provided with a water discharging disc (8) and a connecting square head (11), the connecting square head (11) is positioned at one side of the water discharging disc (8) far away from the core drill rod, a spring damping pad (10) is arranged between the water discharging disc (8) and the connecting square head (11), and a guide block (9) is arranged between the water discharging disc (8) and the spring damping pad (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120302230.9U CN215804395U (en) | 2021-02-02 | 2021-02-02 | Multi-section drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120302230.9U CN215804395U (en) | 2021-02-02 | 2021-02-02 | Multi-section drill rod |
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| Publication Number | Publication Date |
|---|---|
| CN215804395U true CN215804395U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120302230.9U Active CN215804395U (en) | 2021-02-02 | 2021-02-02 | Multi-section drill rod |
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| Country | Link |
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| CN (1) | CN215804395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117627545A (en) * | 2024-01-25 | 2024-03-01 | 山东力强机械有限责任公司 | Telescopic machine lock drill rod |
-
2021
- 2021-02-02 CN CN202120302230.9U patent/CN215804395U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117627545A (en) * | 2024-01-25 | 2024-03-01 | 山东力强机械有限责任公司 | Telescopic machine lock drill rod |
| CN117627545B (en) * | 2024-01-25 | 2024-04-30 | 山东力强机械有限责任公司 | Telescopic machine lock drill rod |
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