CN210317188U - Impact drill rod - Google Patents
Impact drill rod Download PDFInfo
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- CN210317188U CN210317188U CN201920943218.9U CN201920943218U CN210317188U CN 210317188 U CN210317188 U CN 210317188U CN 201920943218 U CN201920943218 U CN 201920943218U CN 210317188 U CN210317188 U CN 210317188U
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- drill rod
- elastic
- spring
- stop pin
- diameter
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- Percussive Tools And Related Accessories (AREA)
Abstract
The utility model discloses an impact drill rod, which comprises a first drill rod, a second drill rod and an elastic connecting joint arranged between the first drill rod and the second drill rod; the elastic connecting joint comprises an elastic connecting joint main body, an elastic stop pin and a spring, and the upper end of the elastic connecting joint main body is fixedly connected with the first drill rod; the middle part of the elastic connecting joint main body is transversely provided with an elastic stop pin, the center of the bottom end is fixed with a spring, and the other end of the spring is abutted against the elastic stop pin; two configuration clamping grooves are symmetrically formed in the upper end of the rod wall of the second drill rod, and two ends of the elastic stop pin are clamped into the configuration clamping grooves. The utility model discloses an impact the drilling rod and avoided the loss of connecting piece, effectively solved and strikeed the drilling rod when receiving the impact effect, the screw thread is very easily destroyed and loses the connection effect to strike the easy cracked problem of taking place in the screw thread bottom of the pin thread end of drilling rod joint.
Description
Technical Field
The utility model relates to an strike the drilling rod field, more specifically relates to an impact drilling rod.
Background
One of the drilling tools for percussive drilling is a circular steel tube with a conical internal thread at its lower end for connection to a drill bit and a conical external thread at its upper end for connection to a wire rope connector. The impact drill rod has the functions of increasing the weight of the drilling tool and the impact force of broken rocks so as to improve the drilling efficiency; and the other is to guide the drilling tool to keep the drilling tool vertical so as to prevent the drilling hole from bending. However, the conventional percussion drill rods are connected by threads, but when the percussion drill rods connected by the threads are impacted, the threads of the threads are easily damaged to lose the connection effect, and the thread bottoms of the male thread ends of the percussion drill rod joints are easily broken.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the aforesaid not enough, provide an impact drilling rod. The utility model discloses an impact drilling rod is effectual to have solved and has impacted the drilling rod when receiving the impact action, and the screw thread very easily is destroyed and loses the connection to strike the easy cracked problem that takes place in the screw thread bottom of drilling rod joint's pin thread end.
The technical scheme of the utility model is that:
the utility model provides an impact drill rod, which comprises a first drill rod, a second drill rod and an elastic connecting joint arranged between the first drill rod and the second drill rod; the elastic connecting joint comprises an elastic connecting joint main body, an elastic stop pin and a spring, and the upper end of the elastic connecting joint main body is fixedly connected with the first drill rod; the middle part of the elastic connecting joint main body is transversely provided with an elastic stop pin, the center of the bottom end is fixed with a spring, and the other end of the spring is abutted against the elastic stop pin; two configuration clamping grooves are symmetrically formed in the upper end of the rod wall of the second drill rod, two ends of the elastic stop pin are clamped in the configuration clamping grooves, and the elastic stop pin and the second drill rod are restrained to rotate mutually under the action of a spring; when the connector is impacted, the spring stretches and jacks up the elastic stop pin, the elastic stop pin is contacted with the top end of the configuration clamping groove, the lower end face of the first drill rod is further directly contacted with the upper end face of the second drill rod, and the connector is not stressed.
Furthermore, the lower end of the first drill rod is provided with a second plug pin port, the upper end of the elastic connection joint main body is correspondingly provided with the first plug pin port and the second plug pin port, the two corresponding first plug pin ports are fixedly connected through an elastic cylindrical pin, the two corresponding second plug pin ports are fixedly connected through the elastic cylindrical pin, and the outer eight plug pins are locked.
Further, the diameter of the upper end of the elastic connecting joint main body is smaller than that of the lower end of the elastic connecting joint main body.
Furthermore, the outer diameter of the upper end of the elastic connection joint main body is the same as the inner diameter of the first drill rod, and the upper end of the elastic connection joint main body and the first drill rod are inserted in the same diameter.
Further, the outer diameter of the lower end of the elastic connecting joint main body is the same as the inner diameter of the second drill rod.
Further, the center of the bottom end of the elastic connection joint main body is provided with a fixing column, and the fixing column is arranged in the middle of the spring. The fixed column is used for fixing the spring direction, so that the spring can stretch in the vertical direction.
Furthermore, the length of the fixed column is 1/2-3/4 of the length of the spring in a natural state. The direction that the fixed column can better fixed spring has been guaranteed, does not influence the flexible of spring when connector operating condition again.
Furthermore, the bottom of the elastic connecting joint main body is provided with a stopper with an opposite middle shaft. The chamfer design of the stopper with the centering shaft is to ensure that the connector can be smoothly inserted into the drill rod to play a role in guiding and fixing the centering shaft.
Furthermore, the width of the slot structure at the tail end of the slot is smaller than the width of the slot; the width of the depth of the clamping groove at the tail end of the configuration clamping groove is equal to the diameter of the elastic stop pin, and the diameter of the elastic stop pin is smaller than the width of the clamping groove of the configuration clamping groove. The elastic stop pin can smoothly pass through the clamping groove of the configuration clamping groove after entering from the opening of the configuration clamping groove and can be clamped into the clamping groove structure at the tail end of the configuration clamping groove.
Further, the spring travel is larger than the diameter of the elastic stop pin. The spring stroke is slightly larger than the diameter of the elastic stop pin, so that the diameter of the elastic stop pin can be ensured to freely enter and exit the configuration clamping groove.
The bottom end of the second drill rod can be provided with a drill bit, and the drill bit can be a conventional drill bit.
The utility model has the advantages that:
the utility model discloses an impact drill rod, at the in-process that creeps into, remain the conduction of drilling rod itself throughout and strike the effort, adapting unit is not atress, has avoided the loss of connecting piece, has effectively solved and has strikeed the drilling rod when strikeing the effect, and the screw thread is very easily destroyed and loses the connection effect to strike the easy cracked problem that takes place in the screw thread bottom of the pin thread end of tool joint. And the connecting joint and the second drill rod are connected in a bolt type manner, so that the operation is simple, the auxiliary time is reduced, and the construction efficiency can be improved.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
Fig. 1 shows a schematic structural view of the percussion drill rod of the present invention.
Fig. 2 shows a schematic view of a first drill rod according to the present invention.
Fig. 3 shows a schematic view of the elastic connection joint structure of the present invention.
Fig. 4 shows a second drill rod according to the present invention.
In the figure, the drill rod comprises a first drill rod 1, a first drill rod 2, an elastic cylindrical pin 3, an elastic connecting joint body 4, a second drill rod 5, an elastic stop pin 6, a spring 7, a stop head with a middle shaft, 8, a fixed column 9, a configuration clamping groove 10, a first plug pin port 11 and a second plug pin port.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
Example 1
As shown in fig. 1 and 3, the percussion drill rod comprises a first drill rod 1, a second drill rod 4 and an elastic connecting joint arranged between the first drill rod 1 and the second drill rod 4, wherein the elastic connecting joint comprises an elastic connecting joint body 3, an elastic stop pin 5 and a spring 6; the upper end of the elastic connecting joint main body 3 is fixedly connected with the first drill rod 1; the middle part of the elastic connecting joint main body 3 is transversely provided with an elastic stop pin 5, the center of the bottom end is fixed with a spring 6, and the other end of the spring 6 is propped against the elastic stop pin 5; two configuration clamping grooves 9 (as shown in fig. 4) are symmetrically formed in the upper end of the rod wall of the second drill rod 4, two ends of the elastic stop pin 5 are clamped in the configuration clamping grooves 9, and the elastic stop pin 5 and the second drill rod 4 are restrained to rotate mutually under the action of the spring 6; when the impact action is exerted, the spring 6 stretches and jacks the elastic stop pin 5 upwards, the elastic stop pin 5 is contacted with the top end of the configuration clamping groove 9, the lower end face of the first drill rod 1 is contacted with the upper end face of the second drill rod 4, and the connector is not stressed.
The diameter of the upper end of the elastic connection joint body 3 is smaller than that of the lower end of the elastic connection joint body 3. The outer diameter of the upper end of the elastic connection joint main body 3 is the same as the inner diameter of the first drill rod 1, and the upper end of the elastic connection joint main body 3 and the first drill rod 1 are inserted in the same diameter. The outer diameter of the lower end of the elastic connecting joint main body 3 is the same as the inner diameter of the second drill rod 4. The width of the tail end of the configuration clamping groove 9 is smaller than the width of the clamping groove; the width of the depth of the tail end of the configuration clamping groove 9 is equal to the diameter of the elastic stop pin 5, and the diameter of the elastic stop pin 5 is smaller than the width of the configuration clamping groove 9 (the diameter of the elastic stop pin 5 is about 3mm smaller than the width of the configuration clamping groove 9).
As shown in fig. 2 and 3, two first plug ports 10 are formed at the lower end of the first drill rod 1, two second plug ports 11 are correspondingly formed at the upper end of the elastic connection joint body 3, and the corresponding first plug ports 10 and the corresponding second plug ports 11 are fixedly connected through the elastic cylindrical pin 2, so that the upper end of the elastic connection joint body 3 is fixedly connected with the lower end of the first drill rod 1.
As shown in fig. 3, a fixing column 8 is arranged at the center of the bottom end of the elastic connection joint main body 3, and the fixing column 8 is arranged in the middle of the spring 6. The fixing column 8 is used for fixing the direction of the spring 6, so that the spring can stretch and contract in the vertical direction. The length of the fixed column 8 is 3/4 of the length of the spring 6 in a natural state. The bottom of the elastic connecting joint main body 3 is provided with a stopper 7 with an opposite middle shaft. The stroke of the spring 6 is larger than the diameter of the elastic stop pin 5.
Example 2
Inserting the upper end of an elastic connection joint main body 3 and the lower end of a first drill rod 1 in the same diameter, and after two first plug pin ports 10 at the upper end of the elastic connection joint main body 3 are correspondingly aligned with two second plug pin ports 11 at the lower end of the first drill rod 1, fixedly connecting the elastic connection joint main body with an elastic cylindrical pin 2, and locking the elastic connection joint main body with an outer eight pin; after the elastic connection joint main body 3 and the first drill rod 1 are connected into a whole, the lower end of the elastic connection joint main body 3 is inserted into the second drill rod 4 from the upper end of the second drill rod 4 until the elastic stop pin 5 is butted with the configuration clamping groove 9 formed in the rod wall of the upper end of the second drill rod 4, the insertion is stopped, the elastic stop pin 5 is placed into the clamping groove along the direction of the clamping groove of the configuration clamping groove 9, at the moment, the elastic stop pin 5 is a connecting piece for the elastic connection joint main body 3 and the second drill rod 4, and the elastic stop pin 5 is always placed into the clamping groove of the configuration clamping groove 9 under the prestress action of the spring 6 and keeps connected.
Under the effect of receiving the impact (during operating condition), when receiving the impact, spring 6 is tensile and upwards jack-up elasticity backing pin 5, elasticity backing pin 5 contacts with the 9 tops of configuration draw-in groove of second drilling rod 4, guarantee under the impact, elasticity backing pin 5 does not break away from with the draw-in groove, at this moment, the lower terminal surface of first drilling rod 1 and the up end direct contact of second drilling rod 4, be the lower terminal surface of first drilling rod 1 and the up end contact conduction impact of second drilling rod 4 all the time, elastic connection connects main part 3 and does not directly bear the impact, only plays the connection effect.
When the drill rod is lowered/pulled out, the spring 6 is compressed downwards in a stroke mode, the prestress borne by the spring constantly prepares for keeping the elastic stop pin 5 in the configuration clamping groove 9 and keeping the elastic stop pin not to be separated when the drill rod stops being pulled out, at the moment, the elastic stop pin 5 is still clamped in the configuration clamping groove 9 to restrict the transverse movement of the elastic stop pin, the elastic cylindrical pin 2, the elastic connection joint main body 3 and the elastic stop pin 5 are stressed together, and the elastic stop pin 5 is a main stressed part when the drill rod is pulled out.
When the elastic connecting joint 3 is disassembled, the contact surface contact of the first drill rod 1 and the second drill rod 4 is kept, and the elastic stop pin 5 is manually pulled down and rotated out of the configuration clamping groove 9 to be disassembled.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. Percussion drill rod, characterised in that it comprises a first drill rod (1), a second drill rod (4) and an elastic connection joint arranged between the first drill rod (1) and the second drill rod (4); the elastic connecting joint comprises an elastic connecting joint main body (3), an elastic stop pin (5) and a spring (6), the upper end of the elastic connecting joint main body (3) is fixedly connected with the first drill rod (1), the elastic stop pin (5) is transversely arranged in the middle of the elastic connecting joint main body (3), the spring (6) is fixed at the center of the bottom end, and the other end of the spring (6) is abutted against the elastic stop pin (5); two configuration clamping grooves (9) are symmetrically formed in the upper end of the rod wall of the second drill rod (4), and two ends of the elastic stop pin (5) are clamped into the configuration clamping grooves (9).
2. The impact drill rod according to claim 1, wherein the lower end of the first drill rod (1) is provided with a first plug port (10) and a second plug port (11), the upper end of the elastic connection joint body (3) is correspondingly provided with the first plug port (10) and the second plug port (11), the two corresponding first plug ports (10) are fixedly connected through the elastic cylindrical pin (2), and the two corresponding second plug ports (11) are fixedly connected through the elastic cylindrical pin (2).
3. Percussion drill rod according to claim 1, characterised in that the diameter of the upper end of the resilient connection sub body (3) is smaller than the diameter of the lower end of the resilient connection sub body (3).
4. The percussion drill rod according to claim 1, characterized in that the outer diameter of the upper end of the elastic connection joint body (3) is the same as the inner diameter of the first drill rod (1), and the upper end of the elastic connection joint body (3) is inserted into the first drill rod (1) in the same diameter.
5. The percussion drill rod according to claim 1, characterized in that the outer diameter of the lower end of the resilient coupling body (3) is the same as the inner diameter of the second drill rod (4).
6. The percussion drill rod according to claim 1, characterized in that the elastic connection joint body (3) is provided with a fixing column (8) at the bottom center, and the fixing column (8) is arranged in the middle of the spring (6).
7. The percussion drill rod according to claim 6, characterized in that the length of the fixing column (8) is 1/2-3/4 of the length of the spring (6) in a natural state.
8. Percussion drill rod according to claim 1, characterised in that the bottom of the elastic coupling body (3) is provided with a stop (7) with an aligned central axis.
9. The percussion drill rod according to claim 1, characterized in that the width of the groove formation depth at the end of the formation groove (9) is smaller than the groove width; the width of the depth of the tail end of the configuration clamping groove (9) is equal to the diameter of the elastic stop pin (5), and the diameter of the elastic stop pin (5) is smaller than the width of the configuration clamping groove (9).
10. Percussion drill rod according to claim 1, characterised in that the spring (6) stroke is greater than the diameter of the spring catch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920943218.9U CN210317188U (en) | 2019-06-21 | 2019-06-21 | Impact drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920943218.9U CN210317188U (en) | 2019-06-21 | 2019-06-21 | Impact drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317188U true CN210317188U (en) | 2020-04-14 |
Family
ID=70145710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920943218.9U Active CN210317188U (en) | 2019-06-21 | 2019-06-21 | Impact drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317188U (en) |
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2019
- 2019-06-21 CN CN201920943218.9U patent/CN210317188U/en active Active
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