CN219548831U - Elbow joint capable of transmitting torque - Google Patents
Elbow joint capable of transmitting torque Download PDFInfo
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- CN219548831U CN219548831U CN202320656243.5U CN202320656243U CN219548831U CN 219548831 U CN219548831 U CN 219548831U CN 202320656243 U CN202320656243 U CN 202320656243U CN 219548831 U CN219548831 U CN 219548831U
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Abstract
The utility model relates to a elbow joint capable of transmitting torque; the technical problems that the existing toggle joint can only realize bending, cannot transmit torque and cannot enable a fishing head to enter a fish to the greatest extent in the fishing construction are solved; comprises a first joint, a second joint, a third joint and a ball head mandrel; two key grooves are symmetrically formed in the other end of the first connector, and the second connector is sleeved at the other end of the first connector, which is provided with the key grooves; the ball head mandrel comprises a connecting column, a ball body connected to one end of the connecting column and two connecting keys symmetrically arranged on one side of the ball body far away from the connecting column, a containing cavity matched with the ball body is formed between the end face of the other end of the first connector and the interior of the second connector, and a penetrating through hole for the connecting column to penetrate is formed in one end of the second connector far away from the first connector; the ball body is arranged in the accommodating cavity, the two connecting keys are respectively arranged in the corresponding key grooves, and a gap exists between each connecting key and each key groove; the other end of the connecting column passes through the through hole and then is connected with the other end of the third joint.
Description
Technical Field
The utility model relates to a elbow joint, in particular to an elbow joint capable of transmitting torque.
Background
The bendable elbow joint is a tool in petroleum and geological drilling and production work, has the advantages of simple structure, convenient operation, reliable performance, small volume, light weight and the like, is matched with a fishing tool for use, and can grasp a fish with a certain inclination angle.
The existing toggle joint can only realize bending, cannot transfer torque, cannot drive the lower pipe columns connected with the toggle joint to rotate, and cannot enable a fishing head to enter a fish to the greatest extent in fishing construction.
Disclosure of Invention
The utility model provides a elbow joint capable of transmitting torque, which aims to solve the technical problems that the existing elbow joint can only realize bending, cannot transmit torque and can not enable a fishing head to enter a fish to the greatest extent in the fishing operation construction.
The specific technical scheme of the utility model is as follows:
the utility model provides a but elbow joint of transmission moment of torsion, includes first joint, second joint and third joint, and the one end that first joint and third connect is used for connecting on corresponding tubular column, its characterized in that: the ball head mandrel is also included;
two key grooves are symmetrically formed in the other end of the first connector, and the second connector is sleeved at the other end of the first connector, which is provided with the key grooves;
the ball head mandrel comprises a connecting column, a ball body connected to one end of the connecting column, and two connecting keys symmetrically arranged on one side of the ball body away from the connecting column and corresponding to the two key grooves one by one, wherein the diameter of the connecting column is smaller than that of the ball body;
an accommodating cavity matched with the sphere is formed between the end face of the other end of the first connector and the interior of the second connector, one end of the second connector, which is far away from the first connector, is provided with a through hole for the connecting column to pass through, and the diameter of the through hole is larger than that of the connecting column and smaller than that of the sphere;
the ball body is arranged in the accommodating cavity, the two connecting keys are respectively arranged in the corresponding key grooves, and a gap exists between each connecting key and each key groove; the other end of the connecting column passes through the through hole and then is connected with the other end of the third joint.
Further, the first connector is provided with a first through hole along the axial direction of the first connector, the ball head mandrel is provided with a second through hole along the axial direction of the ball head mandrel, the third connector is provided with a third through hole along the axial direction of the third connector, and the first through hole, the second through hole and the third through hole are sequentially communicated to form a liquid circulation channel.
Further, the inner wall of the through hole is a conical surface, the large-diameter end of the through hole is far away from the first joint, and the diameter of the small-diameter end is larger than that of the connecting column and smaller than that of the sphere.
Further, the second joint is in threaded connection with the first joint, and a first sealing ring is arranged between the second joint and the first joint;
a second sealing ring is arranged between one side of the sphere, which is close to the connecting column, and the accommodating cavity, and the diameter of the second sealing ring is smaller than that of the sphere;
the other end of the connecting column penetrates through the through hole and then is in threaded connection with a third joint, and a third sealing ring is arranged between the third joint and the connecting column.
Further, the length of the connecting key along the radial direction of the sphere is smaller than the groove depth of the key groove.
Further, the taper of the conical surface is 5-7 degrees.
Further, a step surface is arranged outside the first connector, and a small-diameter section of the step surface faces the second connector;
the second joint is sleeved at the small-diameter end of the first joint, and the end face of the second joint is attached to the step face.
Further, the axial section of one end, far away from the sphere, of the connecting key is arc-shaped.
The utility model has the advantages that:
1. the utility model provides a elbow joint capable of transmitting torque, which is characterized in that two key grooves are symmetrically arranged at one end of a first joint, which is inserted into a second joint, two connecting keys which are in one-to-one correspondence with the two key grooves are arranged at one end of a sphere, which is far away from a connecting column, so that the transmission of the elbow joint torque is realized, a gap exists between the connecting keys and the key grooves, the diameter of a through hole is larger than that of the connecting column and smaller than that of the sphere, a certain offset angle is ensured in the process of rotating and transmitting the torque by the elbow joint, and the bending is realized.
2. The utility model provides a elbow joint capable of transmitting torque, which is characterized in that the inner wall of a through hole is provided with a conical surface, when a connecting key is contacted with a key groove during bending, a connecting column is contacted with the conical surface of the through hole, so that the stress between the key groove and the connecting key can be relieved, the connecting key is prevented from being broken, and the service life of the elbow joint is prolonged.
3. The utility model provides a elbow joint capable of transmitting torque, which is characterized in that a first through hole is formed in a first joint, a second through hole is formed in a ball head mandrel, a third through hole is formed in a third joint, and liquid circulation during operation is realized through communication among the first through hole, the second through hole and the third through hole.
4. The utility model provides a elbow joint capable of transmitting torque, which ensures the sealing of the joint of the elbow joint and the leakage during the liquid circulation by arranging a first sealing ring between a second joint and a first joint, arranging a second sealing ring inside a sphere and the second joint and arranging a third sealing ring between a connecting column and a third joint.
5. The utility model provides a elbow joint capable of transmitting torque, which is provided with a connecting key with a length smaller than that of a key slot along the radial direction of a sphere.
6. The utility model provides a elbow joint capable of transmitting torque, wherein a step surface is arranged outside a first joint, so that the installation position of a second step surface can be conveniently positioned.
7. The utility model provides a elbow joint capable of transmitting torque, wherein the axial section of one end of a connecting key, which is far away from a sphere, is arc-shaped, so that stress concentration can be prevented when the connecting key is contacted with a key groove, and the service life of the connecting key is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
in the figure: 1. a first joint; 2. a second joint; 3. a third joint; 4. a ball head mandrel; 41. a sphere; 42. a connecting column; 43. a connecting key; 5. a key slot; 6. a through hole; 7. a first seal ring; 8. a second seal ring; 9. a third seal ring; 10. a first through hole; 11. a second through hole; 12. and a third through hole.
Detailed Description
The present utility model will be described in detail with reference to examples.
Reference herein to "left and right" is described in terms of fig. 1.
The utility model provides a elbow joint capable of transmitting torque, which comprises a first joint 1, a second joint 2, a third joint 3 and a ball head mandrel 4.
The ends of the first joint 1 and the third joint 3 remote from the second joint 2 are adapted to be connected to respective tubular strings.
The specific structure of each component is as follows:
the ball head mandrel 4 comprises a ball 41, a connecting column 42 with one end coaxially connected with the ball 41, and two connecting keys 43 symmetrically arranged at one end of the ball 41 far away from the connecting column 42, wherein the diameter of the connecting column 42 is smaller than that of the ball 41.
The outside of the first joint 1 is provided with a step surface, the small-diameter section is arranged on the right side, the left end of the second joint 2 is sleeved outside the small-diameter section and is in threaded connection with the small-diameter section, and the left end surface of the second joint 2 is attached to the step surface.
The middle part of the right end face of the first joint 1 is provided with a notch with a trapezoid axial section, the large diameter end is arranged on the right side, the diameter of the large diameter end is smaller than that of the ball 41, the second joint 2 is arranged in the right side of the right end face of the first joint 1, a first connecting hole and a second connecting hole are arranged in the first joint, the first connecting hole is communicated with the notch, the diameter of the first connecting hole is the same as that of the ball 41, the second connecting hole is communicated with the first connecting hole, the shape of the second connecting hole is matched with that of the ball 41, the notch, the first connecting hole and the second connecting hole form a containing cavity, the right side of the second connecting hole is provided with a penetrating through hole 6 with a trapezoid axial section, the large diameter end of the penetrating through hole 6 is arranged on one side far away from the containing cavity, one end of the first joint 1 is symmetrically provided with two key grooves 5 in the second joint 2, the ball 41 is arranged in the containing cavity, two connecting keys 43 are arranged in the two key grooves 5 in one to one, the connecting column 42 penetrates through the penetrating through the through hole 6 to be coaxially inserted into the third joint 3, and is connected with the third joint 3 in the penetrating through hole, the shape is in threaded connection, the shape of the second joint 43 is matched with the right side, the shape of the ball 41 is matched with the right side, the shape of the ball 4 is the ball groove is limited by the size, the key groove is the key 5, the key 5 is penetrated through the key groove is limited by the key groove 5 and the key 5 is limited by the size when the key joint is in the size and the size of the penetrating through the key groove is in the key 5 and the key joint 5 is in the size and the penetrating through the key 5.
The diameter of the small diameter end of the through hole 6 is smaller than the diameter of the sphere 41 and larger than the diameter of the connecting column 42, and the taper of the side of the through hole 6 is 5-7 degrees.
The first joint 1 is provided with a first through hole 10 along the axial direction thereof, the ball head mandrel 4 is provided with a second through hole 11 along the axial direction thereof, the third joint 3 is provided with a third through hole 12 along the axial direction thereof, and the first through hole 10, the second through hole 11 and the third through hole 12 are sequentially communicated to form a liquid circulation channel.
In order to ensure the tightness of the liquid circulation channel, a first annular sealing groove is arranged in the area where the first joint 1 and the second joint 2 are in threaded connection, a first sealing ring 7 is arranged in the first annular sealing groove, and the sealing between the first joint 1 and the second joint 2 is realized through the arranged first sealing ring 7; a second sealing ring 8 is arranged between the ball 41 and the second joint 2, and the sealing between the second joint 2 and the ball 41 is realized through the arranged second sealing ring 8; the connecting column 42 is provided with a third annular sealing groove in the area in threaded connection with the third joint 3, a third sealing ring 9 is arranged in the third annular sealing groove, and sealing between the connecting column 42 and the third joint 3 is achieved through the arranged third sealing ring 9.
For stable connection of the elbow joint, the first joint 1 and the second joint 2 are assembled and then welded, and the connecting post 42 and the third joint 3 are assembled and then welded.
The axial section of the end of the connecting key 43 remote from the ball 41 is arc-shaped.
The elbow joint is connected to a corresponding pipe column, and can be used with a selected fishing tool, so that torque can be transmitted, and bending can be realized.
Claims (8)
1. The utility model provides a but elbow joint of transmission moment of torsion, includes first joint (1), second joint (2) and third joint (3), and the one end that first joint (1) and third joint (3) are used for connecting on corresponding tubular column, its characterized in that: the ball head mandrel (4) is also included;
two key grooves (5) are symmetrically formed in the other end of the first connector (1), and the second connector (2) is sleeved at the other end of the first connector (1) where the key grooves (5) are formed;
the ball head mandrel (4) comprises a connecting column (42), a ball body (41) connected to one end of the connecting column (42), and two connecting keys (43) symmetrically arranged on one side of the ball body (41) away from the connecting column (42) and corresponding to the two key grooves (5) one by one, wherein the diameter of the connecting column (42) is smaller than that of the ball body (41);
an accommodating cavity matched with the sphere (41) is formed between the end face of the other end of the first connector (1) and the interior of the second connector (2), one end, far away from the first connector (1), of the second connector (2) is provided with a through hole (6) for a connecting column (42) to pass through, and the diameter of the through hole (6) is larger than that of the connecting column (42) and smaller than that of the sphere (41);
the ball body (41) is arranged in the accommodating cavity, the two connecting keys (43) are respectively arranged in the corresponding key grooves (5), and a gap exists between the connecting keys (43) and the key grooves (5); the other end of the connecting column (42) passes through the through hole (6) and then is connected with the other end of the third joint (3).
2. A torque transmittable elbow joint according to claim 1, wherein:
the ball head mandrel (4) is provided with a second through hole (11) along the axial direction of the ball head mandrel, the third joint (3) is provided with a third through hole (12) along the axial direction of the ball head mandrel, and the first through hole (10), the second through hole (11) and the third through hole (12) are sequentially communicated to form a liquid circulation channel.
3. A torque transmittable elbow joint according to claim 1 or 2, wherein:
the inner wall of the through hole (6) is a conical surface, the large-diameter end of the through hole (6) is far away from the first joint (1), and the diameter of the small-diameter end is larger than that of the connecting column (42) and smaller than that of the sphere (41).
4. A torque transmittable elbow joint according to claim 3, wherein:
the second connector (2) is in threaded connection with the first connector (1), and a first sealing ring (7) is arranged between the second connector and the first connector;
a second sealing ring (8) is arranged between one side of the ball body (41) close to the connecting column (42) and the accommodating cavity, and the diameter of the second sealing ring (8) is smaller than that of the ball body (41);
the other end of the connecting column (42) passes through the through hole (6) and is in threaded connection with the third joint (3), and a third sealing ring (9) is arranged between the third joint (3) and the connecting column (42).
5. A torque transmittable elbow joint according to claim 4, wherein:
the length of the connecting key (43) along the radial direction of the sphere (41) is smaller than the groove depth of the key groove (5).
6. A torque transmittable elbow joint according to claim 5, wherein:
the taper of the conical surface is 5-7 degrees.
7. A torque transmittable elbow joint according to claim 6, wherein:
a step surface is arranged outside the first joint (1), and a small-diameter section of the step surface faces the second joint (2);
the second connector (2) is sleeved at the small-diameter end of the first connector (1), and the end face of the second connector (2) is attached to the step face.
8. A torque transmittable elbow joint according to claim 7, wherein:
the axial section of one end, far away from the sphere (41), of the connecting key (43) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320656243.5U CN219548831U (en) | 2023-03-29 | 2023-03-29 | Elbow joint capable of transmitting torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320656243.5U CN219548831U (en) | 2023-03-29 | 2023-03-29 | Elbow joint capable of transmitting torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219548831U true CN219548831U (en) | 2023-08-18 |
Family
ID=87728752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320656243.5U Active CN219548831U (en) | 2023-03-29 | 2023-03-29 | Elbow joint capable of transmitting torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219548831U (en) |
-
2023
- 2023-03-29 CN CN202320656243.5U patent/CN219548831U/en active Active
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