Connecting piece for directional drilling

Abstract

The utility model relates to the technical field of drilling, in particular to a connecting piece for directional drilling, which comprises a drilling machine output end and a connecting device, a drilling rod is arranged at one end of the drilling machine output end, the connecting device is arranged on the surface of the drilling rod, and the connecting device comprises a first connecting sleeve and a second connecting sleeve. According to the connecting device for the drilling machine, the connecting device is arranged, so that the drilling machine and the drilling rod can be conveniently and rapidly connected, and the problem that when an existing drilling machine is connected with the drilling rod, a threaded connection mode is adopted for connection, and the connecting efficiency is high can be effectively solved. The problems that when a drilling machine drives a drilling rod to rotate under stress, threads are prone to being damaged, and connection is not stable are solved, and meanwhile when the drilling machine drives the drilling rod to drill holes, the drilling rod is prone to transmitting the borne force to the drilling machine, the drilling machine is damaged, and the service life is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a connecting piece for directional drilling. Background Art

[0002] Horizontal directional drilling rig is a kind of construction machinery for laying various underground public facilities (pipelines, cables, etc.) without excavating the ground surface. It is widely used in the laying of flexible pipelines for water supply, electricity, telecommunications, natural gas, coal gas, oil, etc. It is suitable for sandy soil, clay, and other conditions, but not suitable for high groundwater levels and pebble formations. It can be constructed in most non-hard rock areas in my country, and the working environment temperature is -15℃~+45℃. Horizontal directional drilling technology is a new construction technology that combines the directional drilling technology of the petroleum industry with traditional pipeline construction methods. It has the characteristics of fast construction speed, low construction precision and low cost. It is widely used in the laying of pipelines for water supply, coal gas, electricity, telecommunications, natural gas, oil, etc. When drilling, the directional drilling machine will use connectors to connect the drilling machine to the drill rod to perform drilling operations.

[0003] The inventor has discovered in his daily work that the existing drilling machine is connected to the drill rod by a threaded connection. When the drilling machine drives the drill rod to rotate under force, the thread is easily damaged, resulting in an unstable connection. At the same time, when the drilling machine drives the drill rod to drill a hole, the drill rod is likely to transmit the force it receives to the drilling machine, causing damage to the drilling machine and affecting its lifespan, which in turn leads to the problem that the connection between the drilling machine and the drill rod connector is unstable and lacks a buffering function. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that the connection of the connecting piece is unstable and has no buffering function, and proposes a connecting piece for directional drilling.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connecting piece for directional drilling, comprising a drilling machine output end and a connecting device, one end of the drilling machine output end is provided with a drilling rod, the connecting device is arranged on the surface of the drilling rod, the connecting device comprises a connecting sleeve 1 and a connecting sleeve 2, the connecting sleeve 1 and the connecting sleeve 2 are respectively arranged on one side of the drilling rod and the drilling machine output end, the surfaces of the drilling rod and the drilling machine output end are fixedly connected with three positioning blocks, the inner walls of the connecting sleeve 1 and the connecting sleeve 2 are provided with slots, the positioning blocks are plugged into the inner walls of the slots, and the inner walls of the connecting sleeve 1 and the connecting sleeve 2 are rotatably connected with rotating rings A limiting groove is provided on the surface of the positioning block, and the rotating ring is plugged into the inner wall of the limiting groove. Three grooves are provided on the surface of the rotating ring, and the grooves are for the positioning block to pass through. A buffer assembly is provided between the connecting sleeve 1 and the connecting sleeve 2. Through the above components, when the output end of the drilling machine and the drilling rod are connected, the output end of the drilling machine and the drilling rod are respectively inserted into the connecting sleeve 2 and the connecting sleeve 1, and the positioning block is inserted into the slot. When the positioning block passes through the groove on the surface of the rotating ring to a certain position, the rotating ring is rotated and the rotating ring is stuck in the positioning groove on the surface of the positioning block, so that the drilling rod and the output end of the drilling machine can be limited in the connecting sleeve 1 and the connecting sleeve 2, thereby completing the connection between the two.

[0006] Preferably, three blocks are fixedly connected to the surfaces of the connecting sleeve one and the connecting sleeve two, and three arc-shaped holes are opened on the surface of the rotating ring. A positioning spring is fixedly connected to the side of the block corresponding to the inner wall of the arc-shaped hole. Through the above components, the block can cooperate with the arc-shaped hole on the surface of the rotating ring to position the rotating ring when it rotates. At the same time, the positioning spring can control the reset of the rotating ring to improve the stability of the rotating ring when it is stuck in the limit groove on the surface of the positioning block.

[0007] Preferably, the inner walls of the connecting sleeve 1 and the connecting sleeve 2 are respectively fixedly connected with gaskets. Through the above components, the gaskets can fill the gaps between the drilling rod and the output end of the drilling machine in the connecting sleeve 1 and the connecting sleeve 2 to improve the stability effect.

[0008] Preferably, a plurality of protrusions are fixedly connected to the outer surface of the rotating ring, and the plurality of protrusions are arranged at equal intervals. Through the above components, the plurality of protrusions on the outer surface of the rotating ring can increase the friction of the rotating ring, making it easier for the user to rotate the rotating ring.

[0009] Preferably, the buffer assembly includes a hollow sleeve, which is fixedly connected to the surface of the connecting sleeve one, and a damping block is slidably connected to the inner wall of the hollow sleeve, and the other end of the damping block is fixedly connected to the surface of the connecting sleeve two, and a buffer spring is fixedly connected to the side of the damping block corresponding to the inner wall of the hollow sleeve. Through the above components, when the drilling rod is hit, the buffer spring cooperates with the damping block to buffer and absorb energy, thereby reducing the impact force directly transmitted to the output end of the drilling machine, which would cause damage to the drilling machine for a long time and affect its life.

[0010] Preferably, a sliding rod is fixedly connected to the inner wall of the hollow sleeve, and the sliding rod is slidably connected to the inner wall of the damping block. Through the above components, the sliding rod can guide the damping block and the buffer spring at the same time.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, by setting a connecting device, when it is necessary to connect, first rotate the rotating ring, the positioning spring is stressed, the output end of the drilling machine is inserted into the connecting sleeve 2, and the positioning block on the output end of the drilling machine is inserted into the slot in the connecting sleeve 2. When the positioning block passes from the groove on the surface of the rotating ring to a certain position, loosen the rotating ring, the positioning spring drives the rotating ring to reset, and the rotating ring is stuck in the positioning groove on the surface of the positioning block, so that the output end of the drilling machine can be restricted in the connecting sleeve 2, and the drilling rod is installed in the connecting sleeve 1. The same operation as above can complete the connection between the two. At the same time, after the connection, when operating, the buffer component can perform buffering protection. By setting a connecting device, it is convenient to quickly connect the drilling machine and the drill rod, which can effectively reduce the existing drilling machine. When the drilling machine drives the drill rod to rotate under force, it is easy to cause damage to the thread, resulting in unstable connection. At the same time, when the drilling machine drives the drill rod to drill, the drill rod is easy to transmit the force received to the drilling machine, causing damage to the drilling machine and affecting the service life.

[0013] 2. In the utility model, by setting a buffer assembly, when the drill rod is subjected to a force parallel to the output end of the drilling machine, the damping block slides in the hollow sleeve, the buffer spring is deformed by the force, and the buffer spring cooperates with the damping block to perform shock absorption and energy absorption, thereby reducing the problem of external force on the drill rod being directly transmitted to the output end of the drilling machine, causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural schematic diagram of a connecting piece for directional drilling is proposed for the utility model;

[0015] Figure 2 The utility model provides a schematic diagram of the structure of a connecting device in a connecting piece for directional drilling;

[0016] Figure 3 This is a schematic diagram of another part of the structure of a connecting device in a connecting piece for directional drilling proposed by the utility model;

[0017] Figure 4 The utility model provides a partial cross-sectional structural schematic diagram of a connecting device of a connecting piece for directional drilling;

[0018] Figure 5 The utility model provides a structural schematic diagram of a rotating ring of a connecting device of a connecting piece for directional drilling.

[0019] Legend:

[0020] 1. Drilling machine output end; 2. Drilling rod; 3. Connecting device; 31. Connecting sleeve 1; 32. Buffer assembly; 321. Hollow sleeve; 322. Damping block; 323. Buffer spring; 324. Sliding rod; 33. Rotating ring; 34. Positioning block; 35. Connecting sleeve 2; 36. Groove; 37. Positioning spring; 38. Bump; 39. Stop block; 310. Gasket. DETAILED DESCRIPTION

[0021] See also Figure 1-5 The utility model provides a technical solution: a connecting piece for directional drilling, including a drilling machine output end 1 and a connecting device 3, a drilling rod 2 is arranged at one end of the drilling machine output end 1, and the connecting device 3 is arranged on the surface of the drilling rod 2.

[0022] The specific configuration and function of the connecting device 3 and the buffer assembly 32 will be described in detail below.

[0023] Specifically, the connecting device 3 includes a connecting sleeve 1 31 and a connecting sleeve 2 35. The connecting sleeve 1 31 and the connecting sleeve 2 35 are respectively arranged on one side of the drilling rod 2 and the drilling machine output end 1. The surfaces of the drilling rod 2 and the drilling machine output end 1 are fixedly connected with three positioning blocks 34. The inner walls of the connecting sleeve 1 31 and the connecting sleeve 2 35 are provided with slots. The positioning blocks 34 are plugged into the inner walls of the slots. The inner walls of the connecting sleeve 1 31 and the connecting sleeve 2 35 are rotatably connected with a rotating ring 33. A limiting groove is arranged on the surface of the positioning block 34. The rotating ring 33 is plugged into the inner wall of the limiting groove. Three grooves 36 are arranged on the surface of the rotating ring 33. The grooves 36 are for the positioning blocks 34 to pass through. A buffer assembly 32 is arranged between the connecting sleeve 1 31 and the connecting sleeve 2 35.

[0024] In this embodiment: when connecting the drilling machine output end 1 and the drilling rod 2, the drilling machine output end 1 and the drilling rod 2 are respectively inserted into the connecting sleeve 2 35 and the connecting sleeve 1 31, and the positioning block 34 is inserted into the slot. When the positioning block 34 passes through the groove 36 on the surface of the rotating ring 33 to a certain position, the rotating ring 33 is rotated, and the rotating ring 33 is stuck in the positioning groove on the surface of the positioning block 34, so that the drilling rod 2 and the drilling machine output end 1 can be restricted in the connecting sleeve 1 31 and the connecting sleeve 2 35, completing the connection between the two.

[0025] Specifically, three blocks 39 are fixedly connected to the surfaces of the connecting sleeve 1 31 and the connecting sleeve 2 35, and three arc-shaped holes are opened on the surface of the rotating ring 33. A positioning spring 37 is fixedly connected to the side of the block 39 corresponding to the inner wall of the arc-shaped hole. The block 39 can cooperate with the arc-shaped hole on the surface of the rotating ring 33 to position the rotating ring 33 when it rotates. At the same time, the positioning spring 37 can control the resetting of the rotating ring 33 to improve the stability of the rotating ring 33 when it is stuck in the limiting groove on the surface of the positioning block 34.

[0026] Specifically, the inner walls of the connecting sleeve 1 31 and the connecting sleeve 2 35 are respectively fixedly connected with gaskets 310 .

[0027] In this embodiment, the gasket 310 can fill the gap between the drilling rod 2 and the drilling machine output end 1 in the connecting sleeve 1 31 and the connecting sleeve 2 35 to improve the stabilization effect.

[0028] Specifically, a plurality of protrusions 38 are fixedly connected to the outer surface of the rotating ring 33 , and the plurality of protrusions 38 are arranged at equal intervals. The plurality of protrusions 38 on the outer surface of the rotating ring 33 can increase the friction force of the rotating ring 33 , making it easier for the user to rotate the rotating ring 33 .

[0029] Specifically, the buffer assembly 32 includes a hollow sleeve 321, which is fixedly connected to the surface of the connecting sleeve 1 31, and a damping block 322 is slidably connected to the inner wall of the hollow sleeve 321. The other end of the damping block 322 is fixedly connected to the surface of the connecting sleeve 2 35, and a buffer spring 323 is fixedly connected to the side of the damping block 322 corresponding to the inner wall of the hollow sleeve 321.

[0030] In this embodiment: when the drilling rod 2 is hit, the buffer spring 323 cooperates with the damping block 322 to buffer and absorb energy, reducing the impact force directly transmitted to the output end 1 of the drilling machine, which would cause damage to the drilling machine over a long period of time and affect its life.

[0031] Specifically, the inner wall of the hollow sleeve 321 is fixedly connected with a sliding rod 324 , and the sliding rod 324 is slidably connected to the inner wall of the damping block 322 .

[0032] In this embodiment, the slide rod 324 can guide the damping block 322 and the buffer spring 323 at the same time.

[0033] Working principle: By setting the connection device 3, when it is necessary to connect, first rotate the rotating ring 33, the positioning spring 37 is stressed, and the output end 1 of the drilling machine is inserted into the second connecting sleeve 35, and the positioning block 34 on the output end 1 of the drilling machine is inserted into the slot in the second connecting sleeve 35. When the positioning block 34 passes through the groove 36 on the surface of the rotating ring 33 to a certain position, loosen the rotating ring 33, and the positioning spring 37 drives the rotating ring 33 to reset. The rotating ring 33 is stuck in the positioning groove on the surface of the positioning block 34, and the output end 1 of the drilling machine can be restricted in the second connecting sleeve 35. The drilling rod 2 is installed in the connecting sleeve 1 31. The same operation as above can complete the connection between the two. At the same time, after the connection, when operating, the buffer group Component 32 can provide buffering protection. When the drill rod is subjected to a force parallel to the output end 1 of the drilling machine, the damping block 322 slides in the hollow sleeve 321, and the buffer spring 323 is deformed under force. The buffer spring 323 cooperates with the damping block 322 to reduce shock and absorb energy. By providing the connecting device 3, it is convenient to quickly connect the drilling machine and the drill rod, which can effectively reduce the problem that the existing drilling machine uses a threaded connection to connect with the drill rod. When the drilling machine drives the drill rod to rotate under force, it is easy to cause damage to the thread, resulting in an unstable connection. At the same time, when the drilling machine drives the drill rod to drill a hole, the drill rod is easy to transmit the force it is subjected to to the drilling machine, causing damage to the drilling machine and affecting its service life.

Claims

1. A connection piece for directional drilling, comprising a drilling machine output end (1) and a connection device (3), characterized in that: A drilling rod (2) is disposed at one end of the drilling machine output end (1); the connecting device (3) is disposed on the surface of the drilling rod (2); the connecting device (3) comprises a connecting sleeve 1 (31) and a connecting sleeve 2 (35); the connecting sleeve 1 (31) and the connecting sleeve 2 (35) are disposed on one side of the drilling rod (2) and the drilling machine output end (1), respectively; the surfaces of the drilling rod (2) and the drilling machine output end (1) are both fixedly connected with three positioning blocks (34); the connecting sleeve 1 (31) and the connecting sleeve 2 (35) are The inner walls of the connecting sleeves (31) and (35) are provided with slots, the positioning block (34) is plugged into the inner walls of the slots, the inner walls of the connecting sleeves (31) and (35) are rotatably connected with a rotating ring (33), the surface of the positioning block (34) is provided with a limiting groove, the rotating ring (33) is plugged into the inner walls of the limiting grooves, the surface of the rotating ring (33) is provided with three grooves (36), the grooves (36) are for the positioning block (34) to pass through, and a buffer component (32) is provided between the connecting sleeves (31) and (35).

2. A directional drilling connector according to claim 1, characterized in that: The surfaces of the connecting sleeve 1 (31) and the connecting sleeve 2 (35) are both fixedly connected with three blocks (39), the surface of the rotating ring (33) is provided with three arc-shaped holes, and a positioning spring (37) is fixedly connected to one side of the block (39) corresponding to the inner wall of the arc-shaped hole.

3. A directional drilling connector according to claim 1, characterized in that: Gaskets (310) are fixedly connected to the inner walls of the first connecting sleeve (31) and the second connecting sleeve (35), respectively.

4. A directional drilling connector according to claim 1, characterized in that: A plurality of protrusions (38) are fixedly connected to the outer surface of the rotating ring (33), and the plurality of protrusions (38) are arranged at equal intervals.

5. A directional drilling connector according to claim 1, characterized in that: The buffer assembly (32) comprises a hollow sleeve (321), the hollow sleeve (321) is fixedly connected to the surface of the first connecting sleeve (31), the inner wall of the hollow sleeve (321) is slidably connected to a damping block (322), the other end of the damping block (322) is fixedly connected to the surface of the second connecting sleeve (35), and the side of the damping block (322) corresponding to the inner wall of the hollow sleeve (321) is fixedly connected to a buffer spring (323).

6. A directional drilling connector according to claim 5, characterized in that: The inner wall of the hollow sleeve (321) is fixedly connected with a sliding rod (324), and the sliding rod (324) is slidably connected to the inner wall of the damping block (322).

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