Signal transmission device and power head

Abstract

The present invention relates to a signal transmission device and a power head. The signal transmission device includes a signal transmission line, a first sleeve, a second sleeve, a signal connector, and a ejector pin. The first sleeve is fixedly arranged; the second sleeve is rotatably arranged inside the first sleeve, and the signal transmission line is arranged inside the second sleeve; the signal connector is arranged at one end of the first sleeve along the axis of the first sleeve, and is fixedly connected to one end of the first sleeve through a first fixing component; the ejector pin is arranged inside the second sleeve along the axis of the second sleeve, and is fixedly connected to the second sleeve through a second fixing component, one end of the ejector pin is rotatably connected to the signal connector, and the other end is fixedly connected to the signal transmission line. The present invention provides a first sleeve and a second sleeve that rotate relatively. When the signal transmission line, the second sleeve, and the ejector pin rotate synchronously, the first sleeve and the signal connector are in a fixed state. At this time, the ejector pin and the signal connector can be rotatably connected to realize signal transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling devices, and in particular to a signal transmission device and a power head. Background Art

[0002] A drilling rig is a mechanical device that drives the drill tool underground to obtain physical geological data during the exploration or development of mineral resources, including solid minerals, liquid minerals, and gas minerals. It is also called a drilling machine. The main function of the drilling rig is to drive the drill tool to break the rock at the bottom of the hole. The drill tool that is lowered into or pulled out of the hole can be used to drill rock cores, ore cores, rock cuttings, gas samples, liquid samples, etc., to explore the underground geology and mineral resources.

[0003] The drill bit is the main tool for breaking rocks during the drilling process, and the wellbore is formed by the drill bit breaking rocks. The quality of a wellbore and the length of time it takes to form it are related not only to the characteristics of the rock formation being drilled and the performance of the drill bit itself, but also to the degree of mutual matching between the drill bit and the formation.

[0004] When drilling, the anisotropy of the rock may cause a tilting torque at the drill bit, which may tilt the large-diameter drill bit and cause the hole to be tilted. When drilling into soft and hard interlayers, caves or large cracks, a drilling pressure difference may occur at the drill bit or the drill bit may slip along the rock joints, which may easily cause the drilling trajectory to deviate. In the prior art, the probe of the measurement while drilling system is set at the front end of the drill pipe to measure the direction of the drilling.

[0005] However, in the prior art, the signal transmission line of the measurement while drilling system is connected to the drill pipe. During drilling, since the signal transmission line rotates with the rotation of the drill pipe, it is inconvenient to receive the measurement signal of the rotating signal transmission line, and the signal transmission of the measurement system can only be performed after drilling is stopped. Summary of the invention

[0006] The purpose of the present invention is to solve the problem of inconvenience in receiving measurement signals for a rotating signal transmission line, and to provide a signal transmission device and a power head.

[0007] The present invention provides a signal transmission device, comprising a signal transmission line, and further comprising:

[0008] A first sleeve, fixedly arranged;

[0009] A second sleeve is rotatably disposed inside the first sleeve, and the signal transmission line is disposed inside the second sleeve;

[0010] A signal connector is arranged at one end of the first sleeve along the axis of the first sleeve and is fixedly connected to the one end of the first sleeve through a first fixing assembly;

[0011] The ejector pin is arranged inside the second sleeve along the axis of the second sleeve and is fixedly connected to the second sleeve through a second fixing assembly. One end of the ejector pin is rotatably connected to the signal connector, and the other end is fixedly connected to the signal transmission line.

[0012] Preferably, the first fixing assembly includes a first shaft member, one end of which is fixedly connected to the end of the first sleeve via a connecting plate, the signal connector is arranged on the outside of the first shaft member, and a circular limiting groove is provided at one end of the first shaft member close to the ejector pin, and the connector end of the signal connector passes through the first shaft member and extends into the limiting groove.

[0013] Preferably, the second fixing assembly includes a second shaft member, the second shaft member is fixedly connected to the second sleeve, one end of the second shaft member is rotatably arranged in the limit groove, a through hole is opened inside the second shaft member along the axis, and the ejector pin is fixedly arranged inside the through hole at one end close to the signal connector.

[0014] Preferably, the interior of the second sleeve is fixedly connected to the third sleeve, the first shaft member and the second shaft member are both sleeved in the third sleeve, the first shaft member is rotatably connected to the third sleeve, and the second shaft member is fixedly connected to the third sleeve.

[0015] Preferably, the first sleeve is a water braid output sleeve, the second sleeve is a water braid output shaft, and a first sealing ring is provided between the third sleeve and the first shaft.

[0016] Preferably, a second sealing ring is provided between the second shaft member and the inner wall of the limiting groove.

[0017] Preferably, a bearing is provided between the first sleeve and the second sleeve.

[0018] A power head includes a signal transmission device and a main shaft, one end of the main shaft is fixedly connected to a drill rod, and the other end is fixedly connected to a second sleeve, and the signal transmission line passes through the inside of the main shaft and extends to the inside of the second sleeve.

[0019] Compared with the prior art, the signal transmission device and power head provided by the present invention have the following beneficial effects:

[0020] The present invention provides a first sleeve and a second sleeve that rotate relatively, fixes the signal connector and the first sleeve, and fixes the ejector pin and the second sleeve. When the signal transmission line, the second sleeve, and the ejector pin rotate synchronously, the first sleeve and the signal connector are in a fixed state. At this time, the ejector pin and the signal connector can be rotatably connected to realize signal transmission, which facilitates the signal connector to receive signals from the rotating signal transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the signal transmission device of the present invention.

[0023] Description of reference numerals:

[0024] 1. Signal transmission device; 2. Box; 3. First gear; 4. Main shaft; 5. Signal transmission line; 6. Drill rod; 7. First sealing ring; 8. Second sleeve; 9. Bearing; 10. First shaft; 11. Signal connector; 12. Third sleeve; 13. First sleeve; 14. Second sealing ring; 15. Ejector pin; 17. Second shaft. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 to Figure 2 , the specific embodiments of the present invention are described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0026] Example 1

[0027] like Figure 2 As shown, a signal transmission device provided by the present invention includes a signal transmission line 5, and also includes a first sleeve 13, a second sleeve 8, a signal connector 11, and a pin 15. The first sleeve 13 is fixedly arranged; the second sleeve 8 is rotatably arranged inside the first sleeve 13, and the signal transmission line 5 is arranged inside the second sleeve 8; the signal connector 11 is arranged at one end of the first sleeve 13 along the axis of the first sleeve 13, and is fixedly connected to one end of the first sleeve 13 through a first fixing component; the pin 15 is arranged inside the second sleeve 8 along the axis of the second sleeve 8, and is fixedly connected to the second sleeve 8 through a second fixing component, one end of the pin 15 is rotatably connected to the signal connector 11, and the other end is fixedly connected to the signal transmission line 5.

[0028] When in use, the second sleeve 8 rotates with the signal transmission line 5, and the first sleeve 13 is fixed and rotationally connected to the signal connector 11 through the ejector pin 15, so that signal transmission is achieved while rotating.

[0029] In this embodiment, the first fixing component includes a first shaft member 10, one end of which is fixedly connected to the end of the first sleeve 13 through a connecting plate, and a signal connector 11 is arranged on the outside of the first shaft member 10 for connecting to an external device. A circular limiting groove is provided at one end of the first shaft member 10 close to the ejector pin 15, and the connector end of the signal connector 11 passes through the first shaft member 10 and extends into the limiting groove.

[0030] The first shaft member 10 is coaxially arranged inside the second sleeve 8 with the second sleeve 8 , and one end of the first shaft member 10 extends out of the second sleeve 8 and is fixedly connected to the first sleeve 13 via a connecting plate.

[0031] By providing a circular limiting groove, the signal connector 11 is passed through the bottom axis of the limiting groove to facilitate docking with the ejector pin 15 .

[0032] In this embodiment, the second fixing assembly includes a second shaft member 17, which is fixedly connected to the second sleeve 8. One end of the second shaft member 17 is rotatably set in the limit groove. A through hole is opened inside the second shaft member 17 along the axis. The ejector pin 15 is fixedly set inside the through hole at one end close to the signal connector 11.

[0033] By arranging the end of the second shaft 17 in the limiting groove, it is further ensured that the contact positions of the ejector pin 15 and the signal connector 11 are accurately docked.

[0034] In order to achieve coaxial positioning of the first shaft member 10 and the second shaft member 17, the third sleeve 12 is fixedly connected to the inside of the second sleeve 8, the first shaft member 10 and the second shaft member 17 are both sleeved in the third sleeve 12, the first shaft member 10 is rotatably connected to the third sleeve 12, and the second shaft member 17 is fixedly connected to the third sleeve 12.

[0035] In this embodiment, the first sleeve 13 is a water braid output sleeve, and the second sleeve 8 is a water braid output shaft. In order to prevent water from entering the limiting groove from the water braid output shaft, a first sealing ring 7 is arranged between the third sleeve 12 and the first shaft 10.

[0036] In order to further ensure the sealing performance, a second sealing ring 14 is provided between the second shaft member 17 and the inner wall of the limiting groove to prevent the water used for drilling from entering between the ejector pin 15 and the signal connector 11 and affecting the signal transmission.

[0037] A bearing 9 is provided between the first sleeve 13 and the second sleeve 8 , and a deep groove ball bearing is selected as the bearing 9 .

[0038] The usage and working principle of this embodiment

[0039] The present embodiment provides a signal transmission device. When in use, the second sleeve 8 and the signal transmission line 5 rotate synchronously. When the second sleeve 8 rotates, it drives the third sleeve 12 and the second shaft 17 to rotate. The ejector pin 15 is fixedly arranged inside the second shaft 17. When the first sleeve 13 is fixedly arranged, the first shaft 10 is also fixed. The signal connector 11 is coaxially arranged with the ejector pin 15. When the ejector pin 15 rotates, it can always contact the signal connector 11 to realize signal transmission.

[0040] Example 2

[0041] like Figure 1 As shown, a power head provided by the present invention includes a signal transmission device and a main shaft 4, one end of the main shaft 4 is fixedly connected to the drill rod 6, and the other end is fixedly connected to the second sleeve 8, and the signal transmission line 5 passes through the inside of the main shaft 4 and extends to the inside of the second sleeve 8.

[0042] A signal transmission line 5 is passed through the inside of the drill rod 6, and the drill rod 6 also includes a box body 2. The main shaft 4 is rotatably arranged inside the box body 2. One end of the main shaft 4 extends out of the box body 2 and is fixedly connected to the drill rod 6. A through hole is opened inside the main shaft 4 along its axis. The signal transmission line 5 passes through the through hole from one side of the drill rod 6 and extends out of the through hole. The driving mechanism is arranged inside the box body 2, and the output end of the driving mechanism is fixedly connected to the main shaft 4 for driving the main shaft 4 to rotate.

[0043] By opening a through hole inside the main shaft 4, the signal transmission line 5 can be conveniently extended from the drill rod 6 through the through hole to the outside. The main shaft 4 is driven to rotate by the driving mechanism to drive the drill rod 6 to rotate. During the rotation, the signal transmission line 5 can be connected through an external signal receiving device to receive signals and feedback information. Signal connection and reception with the signal transmission line 5 can be achieved without stopping drilling or removing the drill rod.

[0044] In this embodiment, the driving mechanism includes: a first gear 3, fixedly mounted on the main shaft 4; a second gear, rotatably mounted inside the housing 2 and meshing with the first gear 3; an engine, fixedly arranged inside the housing 2, and the output end of the engine is fixedly connected to the axle of the second gear.

[0045] The engine is a hydraulic engine.

[0046] The driving mechanism can also be set as a worm gear transmission, the worm wheel is fixedly mounted on the main shaft 4, the worm is rotatably mounted inside the box 2 and meshes with the worm wheel, and the worm is driven to rotate by the engine, thereby driving the worm wheel to rotate, thereby realizing the rotation of the main shaft 4.

[0047] Furthermore, a signal transmission device 1 is provided at one end of the main shaft 4 away from the drill rod 6 , and a signal access end of the signal transmission device 1 is connected to the signal transmission line 5 .

[0048] Furthermore, one end of the signal transmission line 5 located inside the drill rod 6 is connected to a probe tube, and the probe tube is fixedly arranged at one end of the drill rod 6 close to the drill bit.

[0049] Furthermore, the signal transmission line 5 can be a serial port, an optical fiber or a network cable.

[0050] The usage and working principle of this embodiment

[0051] The present invention provides a power head, which, when in use, fixes the main shaft 4 and the drill rod 6, and the signal transmission line 5 inside the drill rod 6 extends to the outside after passing through the through hole, and is connected to the signal transmission line 5 through the signal transmission device 1, so as to realize real-time signal transmission with the outside during the drilling process, and start the engine, the engine drives the second gear to rotate, and the second gear drives the first gear 3 meshing with it to rotate, thereby driving the main shaft 4 to rotate, and realizing the rotation of the drill rod 6. While the drill rod 6 rotates for drilling, the probe connected to the end of the signal transmission line 5 transmits the trajectory offset signal of the drilling to the external device through the signal transmission line 5.

[0052] To summarize, the present invention provides a first sleeve and a second sleeve that rotate relative to each other, fixes the signal connector to the first sleeve, and fixes the ejector pin to the second sleeve. When the signal transmission line, the second sleeve, and the ejector pin rotate synchronously, the first sleeve and the signal connector are in a fixed state. At this time, the ejector pin and the signal connector can be rotatably connected to realize signal transmission, which facilitates the signal connector to receive signals from the rotating signal transmission line.

[0053] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A signal transmission device, comprising a signal transmission line (5), characterized in that: Also includes: A first sleeve (13), fixedly arranged; A second sleeve (8) is rotatably disposed inside the first sleeve (13), and the signal transmission line (5) is disposed inside the second sleeve (8); A signal connector (11) is arranged at one end of the first sleeve (13) along the axis of the first sleeve (13) and is fixedly connected to one end of the first sleeve (13) via a first fixing assembly; A ejector pin (15) is arranged inside the second sleeve (8) along the axis of the second sleeve (8) and is fixedly connected to the second sleeve (8) via a second fixing assembly. One end of the ejector pin (15) is rotatably connected to the signal connector (11), and the other end is fixedly connected to the signal transmission line (5); The first fixing assembly comprises a first shaft member (10), one end of the first shaft member (10) is fixedly connected to the end of the first sleeve (13) via a connecting plate, the signal connector (11) is arranged on the outside of the first shaft member (10), a circular limiting groove is formed at one end of the first shaft member (10) close to the ejector pin (15), and the connector end of the signal connector (11) passes through the first shaft member (10) and extends into the limiting groove; The second fixing assembly comprises a second shaft member (17), the second shaft member (17) is fixedly connected to the second sleeve (8), one end of the second shaft member (17) is rotatably arranged in the limit groove, a through hole is opened inside the second shaft member (17) along the axis, and the ejector pin (15) is fixedly arranged inside the through hole at one end close to the signal connector (11); The interior of the second sleeve (8) is fixedly connected to a third sleeve (12); the first shaft member (10) and the second shaft member (17) are both sleeved in the third sleeve (12); the first shaft member (10) is rotatably connected to the third sleeve (12); and the second shaft member (17) is fixedly connected to the third sleeve (12).

2. A signal transmission device as claimed in claim 1, characterized in that: The first sleeve (13) is a water braid output sleeve, the second sleeve (8) is a water braid output shaft, and a first sealing ring (7) is provided between the third sleeve (12) and the first shaft member (10).

3. A signal transmission device as claimed in claim 2, characterized in that: A second sealing ring (14) is provided between the second shaft member (17) and the inner wall of the limiting groove.

4. A signal transmission device as claimed in claim 1, characterized in that: A bearing (9) is provided between the first sleeve (13) and the second sleeve (8).

5. A power head, characterized in that: The signal transmission device comprises any one of claims 1 to 4, and further comprises a main shaft (4), one end of the main shaft (4) is fixedly connected to the drill rod (6), and the other end is fixedly connected to the second sleeve (8), and the signal transmission line (5) passes through the inside of the main shaft (4) and extends to the inside of the second sleeve (8).

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