Drill rod joint assembly
By designing drill pipe joint assembly, allowing only the connection sleeves of the worn part are replaced, the problem of reduced connection stability caused by thread wear in the prior art is solved, the replacement cost and material waste are reduced, and the torque resistance is improved.
Patent Information
- Application Number
- CN202421307111.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-11
AI Technical Summary
During long-term use, existing drill pipe joints have reduced connection stability due to thread wear, and the entire drill pipe joint needs to be replaced, resulting in problems such as waste of materials and increased replacement costs.
A drill pipe joint assembly is designed, including a drill pipe joint body, a pin, first and second connecting sleeves, external threads, through holes, springs, internal threads, fixing grooves and locking screws, allowing only the wear part to be replaced. Connect the sleeve to avoid replacing the entire drill pipe joint.
It realizes that there is no need to replace the entire drill rod joint after the thread wears, and only needs to replace the connection sleeve of the thread wear part, reducing replacement costs and material waste, while increasing the torque resistance of the connection sleeve.
Smart Images
Figure CN222333720U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drill rod joints, in particular to a drill rod joint assembly. Background Art
[0002] The drill pipe is a rod that connects the drilling tool and the drill bit and transmits power during drilling operations, and the connection between drill pipes requires drill pipe joints.
[0003] Currently, the drill pipe joint and the drill pipe are connected by threads, but the threads will wear out during long-term use, resulting in reduced connection stability between the drill pipe and the drill pipe joint. Therefore, the drill pipe joint needs to be replaced. The existing replacement method is to replace the entire drill pipe joint, resulting in material waste and increased replacement costs. For this reason, we propose a drill pipe joint assembly. Utility Model Content
[0004] The utility model aims to provide a drill rod joint assembly, which has the advantages that when the connecting thread on the drill rod joint is worn, it is not necessary to replace the entire drill rod joint, but only the connecting sleeve of the worn threaded part needs to be replaced, thereby reducing the replacement cost of the drill rod joint and saving material cost. It solves the problem that the drill rod joint and the drill rod are currently connected by threads, but the threads will wear during long-term use, resulting in reduced connection stability between the drill rod and the drill rod joint, so the drill rod joint needs to be replaced, while the existing replacement method is to replace the entire drill rod joint, resulting in material waste and increased replacement cost.
[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a drill rod joint assembly, comprising a drill rod joint body, a plug column is provided on the upper surface of the drill rod joint body, a first connecting sleeve is sleeved on the outer surface of the plug column, an external thread is provided on the outer surface of the first connecting sleeve, fixing holes are symmetrically provided at both sides of the outer surface of the first connecting sleeve, a through hole is provided on the outer surface of the plug column, a spring is provided inside the through hole, and plug rods are respectively connected to both ends of the spring, a second connecting sleeve is installed near the lower surface of the drill rod joint body, an internal thread is provided on the inner wall of the second connecting sleeve, fixing grooves are symmetrically provided at both sides of the outer surface of the second connecting sleeve, threaded countersunk holes are symmetrically provided at both sides of the outer surface of the drill rod joint body near the lower surface, and locking screws are inserted into the two threaded countersunk holes.
[0006] Preferably, the inner wall of the first connecting sleeve is provided with a plurality of first raised strips at equal intervals in a circular array, and the outer surface of the plug column is provided with a plurality of first sliding grooves at equal intervals in a circular array.
[0007] Preferably, a plurality of second raised strips are equidistantly arranged in a circular array on the inner wall of the drill rod joint body near the lower surface, and a plurality of second sliding grooves are equidistantly arranged in a circular array on the outer surface of the second connecting sleeve.
[0008] Preferably, an annular protrusion is provided on the upper surface of the drill rod joint body near the edge, and an annular sealing groove is provided on the lower surface of the drill rod joint body near the edge.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] The utility model provides a drill pipe joint body, an insert column, a first connecting sleeve, an external thread, a fixing hole, a through hole, a spring, an insert rod, a second connecting sleeve, an internal thread, a fixing groove, a threaded countersunk hole and a locking bolt, so that when the connecting thread on the drill pipe joint is worn, there is no need to replace the entire drill pipe joint, and only the connecting sleeve of the worn threaded portion needs to be replaced, thereby reducing the replacement cost of the drill pipe joint and saving material costs. When the thread on the drill pipe joint body is worn, when replacing the first connecting sleeve, the insert rod is pressed to separate it from the fixing hole, and the first connecting sleeve can be directly removed from the insert column, and the insert column can be replaced with a new first connecting sleeve. When replacing the second connecting sleeve, the locking screw is twisted to separate it from the fixing groove, and the second connecting sleeve is directly taken out from the inside of the drill pipe joint body, and then replaced with a new second connecting sleeve.
[0011] The utility model enables the first connecting sleeve to be stably sleeved on the outer surface of the plug post through the first sliding groove and the first protruding strip, thereby limiting the rotation of the first connecting sleeve and improving the torque resistance of the first connecting sleeve.
[0012] The utility model enables the second connecting sleeve to be stably fixed inside the drill pipe joint body through the second sliding groove and the second protruding strip, limits the rotation of the second connecting sleeve, and improves the torque resistance of the second connecting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0014] Figure 2 It is a partial three-dimensional schematic diagram of the first connecting sleeve of the utility model;
[0015] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0016] Figure 4 It is a side sectional structural diagram of the utility model.
[0017] Figure numerals: 1. threaded countersunk hole; 2. locking screw; 3. drill pipe joint body; 4. fixing hole; 5. first raised strip; 6. first slide groove; 7. first connecting sleeve; 8. plug column; 9. external thread; 10. through hole; 11. spring; 12. plug rod; 13. annular protrusion; 14. fixing groove; 15. annular sealing groove; 16. second connecting sleeve; 17. internal thread; 18. second slide groove; 19. second raised strip. DETAILED DESCRIPTION
[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0019] like Figure 1-Figure 4 As shown, a drill pipe joint assembly proposed by the utility model comprises a drill pipe joint body 3, an insert column 8 is arranged on the upper surface of the drill pipe joint body 3, the insert column 8 and the drill pipe joint body 3 are machined in one body, a first connecting sleeve 7 is sleeved on the outer surface of the insert column 8, an external thread 9 is arranged on the outer surface of the first connecting sleeve 7, fixing holes 4 are symmetrically arranged at both sides of the outer surface of the first connecting sleeve 7, a through hole 10 is arranged on the outer surface of the insert column 8, a spring 11 is arranged inside the through hole 10, and an insert rod 12 is connected to both ends of the spring 11, and the ends of the two insert rods 12 are respectively located inside the two fixing holes 4, which fix the first connecting sleeve 7, a plurality of first protruding strips 5 are equidistantly arranged on the inner wall of the first connecting sleeve 7 in an annular array, a plurality of first sliding grooves 6 are equidistantly arranged on the outer surface of the insert column 8 in an annular array, the first sliding grooves 6 correspond to the first protruding strips 5 one by one, and the first protruding strips 5 are located inside the first sliding grooves 6, which limit the rotation of the first connecting sleeve 7 and improve the torsional resistance of the first connecting sleeve 7.
[0020] A second connecting sleeve 16 is installed near the lower surface of the drill pipe joint body 3, and an internal thread 17 is provided on the inner wall of the second connecting sleeve 16. Fixed grooves 14 are symmetrically provided on both sides of the outer surface of the second connecting sleeve 16. Threaded countersunk holes 1 are symmetrically provided on both sides of the outer surface of the drill pipe joint body 3 near the lower surface, and locking screws 2 are inserted in the two threaded countersunk holes 1. The ends of the two locking screws 2 are respectively located in the two fixing grooves 14, which fix the second connecting sleeve 16 located in the drill pipe joint body 3. A plurality of second raised strips 19 are equidistantly provided in a circular array on the inner wall of the drill pipe joint body 3 near the lower surface. The outer surface of the second connecting sleeve 16 is provided with a plurality of second sliding grooves 18 equidistantly in a circular array, and the second sliding grooves 18 correspond to the second protruding strips 19 one by one, and the second protruding strips 19 are located inside the second sliding grooves 18, which limit the rotation of the second connecting sleeve 16 and improve the torsional resistance of the second connecting sleeve 16. An annular protrusion 13 is provided near the edge position on the upper surface of the drill rod joint body 3, and an annular sealing groove 15 is provided near the edge position on the lower surface of the drill rod joint body 3. When the drill rod and the drill rod joint body 3 are connected, the annular protrusion 13 on the drill rod or the drill rod joint body 3 is inserted into the annular sealing groove 15 to seal the connection gap.
[0021] In the utility model, the drill rods are connected through the drill rod joint body 3. When the thread on the drill rod joint body 3 is worn, when replacing the first connecting sleeve 7, the insertion rod 12 is pressed to separate it from the fixing hole 4, and the first connecting sleeve 7 is directly removed from the insertion column 8, and the insertion column 8 is replaced with a new first connecting sleeve 7. When replacing the second connecting sleeve 16, the locking screw 2 is twisted to separate it from the fixing groove 14, and the second connecting sleeve 16 is directly taken out from the inside of the drill rod joint body 3, and then replaced with a new second connecting sleeve 16. There is no need to replace the entire drill rod joint body 3, which reduces the replacement cost and saves materials.
[0022] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.
Claims
1. A drill rod joint assembly, comprising a drill rod joint body (3), characterized in that: The upper surface of the drill pipe joint body (3) is provided with an insertion column (8), the outer surface of the insertion column (8) is sleeved with a first connecting sleeve (7), the outer surface of the first connecting sleeve (7) is provided with an external thread (9), and fixing holes (4) are symmetrically arranged at both sides of the outer surface of the first connecting sleeve (7), the outer surface of the insertion column (8) is provided with a through hole (10), a spring (11) is arranged inside the through hole (10), and the two ends of the spring (11) are respectively connected to an insertion rod (12), a second connecting sleeve (16) is installed inside the drill pipe joint body (3) near the lower surface, the inner wall of the second connecting sleeve (16) is provided with an internal thread (17), and fixing grooves (14) are symmetrically arranged at both sides of the outer surface of the second connecting sleeve (16), and threaded countersunk holes (1) are symmetrically arranged at both sides of the outer surface of the drill pipe joint body (3) near the lower surface, and locking screws (2) are inserted into the two threaded countersunk holes (1).
2. A drill rod joint assembly according to claim 1, characterized in that: The inner wall of the first connecting sleeve (7) is provided with a plurality of first raised strips (5) at equal intervals in a circular array, and the outer surface of the plug post (8) is provided with a plurality of first sliding grooves (6) at equal intervals in a circular array.
3. A drill rod joint assembly according to claim 1, characterized in that: A plurality of second protruding strips (19) are equidistantly arranged in a circular array on the inner wall of the drill rod joint body (3) near the lower surface, and a plurality of second sliding grooves (18) are equidistantly arranged in a circular array on the outer surface of the second connecting sleeve (16).
4. A drill rod joint assembly according to claim 1, characterized in that: An annular protrusion (13) is provided near the edge of the upper surface of the drill rod joint body (3), and an annular sealing groove (15) is provided near the edge of the lower surface of the drill rod joint body (3).