Cap type conductive slip ring mounting structure for directional drilling radar

Abstract

The invention relates to the field of in-hole radars, in particular to a cap type conductive slip ring mounting structure for a directional drilling radar. The cap type conductive slip ring installation structure comprises a slip ring installation sleeve, a bearing, a carrying plate and a cap type conductive slip ring. The slip ring mounting sleeve is provided with a slip ring mounting hole and a bearing mounting hole, the outer stator of the cap type conductive slip ring is fixed in the slip ring mounting hole, and the bearing outer ring is mounted on the bearing mounting hole; a connecting column is arranged at one end of the carrying plate, a through hole is formed in the connecting column, the connecting column penetrates through and is fixed to the bearing inner ring, and the inner rotor of the cap type conductive slip ring is fixedly contained in the through hole in the connecting column. Compared with a traditional installation mode of the cap-type conductive slip ring, the bearing is introduced to the installation position, the obtained structure can resist bending moment caused by external force during radar assembly while normal work of the cap-type conductive slip ring is guaranteed, a fragile inner rotor in the slip ring is protected, and the connection strength of the installation position of the cap-type conductive slip ring is remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of borehole radar, and in particular to a cap-type conductive slip ring installation structure for directional borehole radar. Background Art

[0002] Directional drilling radar plays a vital role in the field of geological exploration. It can accurately detect complex underground geology and provide key data support for many engineering projects, such as path detection before laying urban underground pipelines and geological hazard inspection during mining.

[0003] The normal operation of directional drilling radar depends on the coordination of various internal components. Among them, the conductive slip ring is a key component to ensure the stable transmission of signals and power and prevent the entanglement of wires. The classic cap-type conductive slip ring mainly includes an inner rotor and an outer stator. The inner rotor can rotate relative to the outer stator and always maintain electrical connection. In directional drilling radar, the inner rotor and outer stator of the cap-type conductive slip ring are fixed on two components that need to rotate relative to each other.

[0004] At present, although the conventional installation method can ensure the normal operation of the cap-type conductive slip ring, it has obvious defects. Since the outer shells of the inner rotor and outer stator of the slip ring are made of plastic and the inner rotor has a small diameter, the bending strength of the connection is very low after the slip ring rotates to connect the two components. During the assembly of the internal components of the radar, the slip ring connection is very easy to be damaged, which seriously affects the assembly efficiency and equipment reliability of the borehole radar, and increases the development cost and use risk of the equipment.

[0005] Therefore, a new technical solution is urgently needed to improve the connection strength of the cap-type conductive slip ring installation inside the borehole radar. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a cap-type conductive slip ring installation structure for directional drilling radar. By innovatively introducing the key component of the bearing, the installation method of the cap-type conductive slip ring is optimized and improved, so as to significantly enhance the bending strength of the cap-type conductive slip ring installation point, thereby improving the radar assembly and debugging efficiency.

[0007] A cap-type conductive slip ring installation structure for a directional drilling radar, comprising: a slip ring installation sleeve (1), a bearing (2), a mounting plate (3) and a cap-type conductive slip ring (4); The slip ring mounting sleeve (1) is provided with a slip ring mounting hole (11) inside, and a bearing mounting hole (12) at the end; The bearing (2) is a bidirectional bearing, comprising a bearing outer ring (21) and a bearing inner ring (22); The mounting plate (3) is a component used to mount a radar acquisition and control plate (31), and one end of the mounting plate is provided with a connecting column (32); a through hole (321) is provided inside the connecting column; The cap-type conductive slip ring (4) comprises an outer stator (41) and an inner rotor (42), wherein the inner rotor (42) can rotate relative to the outer stator (41) and always maintain electrical connection; The slip ring mounting sleeve (1) is fixedly accommodated inside the outer tube (5) of the directional drilling radar; the outer stator (41) of the cap-type conductive slip ring (4) is fixedly accommodated on the slip ring mounting hole (11) inside the slip ring mounting sleeve (1); the bearing (2) is fixedly mounted on the slip ring mounting hole (11) via the bearing outer ring (21); the connecting column (32) passes through the bearing inner ring (22) and fixes the inner rotor (42) of the cap-type conductive slip ring (4) into its internal through hole (321); When the directional drilling radar is working, the carrier plate (3) rotates continuously inside the directional drilling radar, and the collected geological signals are transmitted to the inner rotor (42) through a wire, and then transmitted to the radar interface through a cap-type conductive slip ring (4).

[0008] Furthermore, first screw holes (13) are evenly distributed on the end surface of the slip ring mounting hole (11), and corresponding slip ring mounting holes (411) are evenly distributed on the circular flange of the outer stator (41); screws (6) pass through the slip ring mounting holes (411) and are connected to the first screw holes (13), thereby fixing the outer stator (41) of the cap-type conductive slip ring (4) inside the slip ring mounting sleeve (1).

[0009] Furthermore, the bearing outer ring (21) and the slip ring mounting hole (11) are in an interference fit, and the connecting column (32) and the bearing inner ring (22) are in a transition fit.

[0010] Furthermore, the connecting column (32) is evenly distributed with second screw holes (322) in the circumferential direction, and the set screws (7) are screwed into the second screw holes (322) to fix the inner rotor (42) of the cap-type conductive slip ring (4) in the through hole (321) in the middle of the connecting column (32).

[0011] Furthermore, the slip ring mounting sleeve (1) is provided with a square hole (14) in the circumference; when assembling internal components of the radar, a screwdriver can pass through the square hole (14) to complete the installation of the set screw (7).

[0012] The beneficial effect of the present invention is mainly that: by introducing the bearing as a key element, the connection strength of the cap-type conductive slip ring installation location inside the borehole radar is significantly improved. In the present invention, the bearing (2) between the mounting plate (3) and the slip ring installation sleeve (1) can not only ensure the normal operation of the cap-type conductive slip ring (4), but also resist the bending moment caused by external force during radar assembly, protect the fragile inner rotor (42) in the cap-type conductive slip ring (4), and significantly improve the connection strength of the cap-type conductive slip ring installation location. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a cross-sectional view of a cap-type conductive slip ring installation structure in an embodiment of the present invention; Figure 2 It is an axonometric view of the installation structure of the cap-type conductive slip ring in the embodiment of the present invention; Figure 3 An exploded view of a cap-type conductive slip ring installation structure in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of the slip ring installation sleeve in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the connecting column on the mounting plate in an embodiment of the present invention; Figure 6 Schematic diagram of the structure of a cap-type conductive slip ring in an embodiment of the present invention; In the figure: 1-slip ring mounting sleeve; 11-slip ring mounting hole; 12-bearing mounting hole; 13-first screw hole; 14-square hole; 2-bearing; 21-bearing outer ring; 22-bearing inner ring; 3-mounting plate; 31-radar acquisition and control board; 32-connecting column; 321-through hole; 322-second screw hole; 4-hat-type conductive slip ring; 41-outer stator; 411-slip ring mounting hole; 42-inner rotor; 5-outer tube; 6-screw; 7-setting screw. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings; it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention; in addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0016] like Figure 1 As shown, an embodiment of the present invention provides a cap-type conductive slip ring installation structure for a directional drilling radar, which includes a slip ring installation sleeve 1, a bearing 2, a mounting plate 3 and a cap-type conductive slip ring 4. While ensuring the normal operation of the cap-type conductive slip ring, the installation structure can also resist the bending moment caused by external force during radar assembly, thereby significantly improving the connection strength of the slip ring installation.

[0017] like Figure 2 As shown, the slip ring mounting sleeve 1 provided in this embodiment is provided with a slip ring mounting hole 11 inside for accommodating the outer stator 41 of the cap-type conductive slip ring 4, a bearing mounting hole 12 is provided at the end for accommodating the bearing outer ring 21 of the bearing 2, three first screw holes 13 for fixing the cap-type conductive slip ring 4 are evenly distributed on the internal step, and a square hole 14 is also provided in the circumference for installing the set screw 7.

[0018] like Figure 3 As shown, the mounting plate 3 provided in this embodiment is a component for installing a radar acquisition and control board 31; a connecting column 32 is provided at one end of the mounting plate 3 for connecting the bearing inner ring 22; a through hole 321 is provided inside the connecting column 32 for accommodating and fixing the inner rotor 42 of the cap-type conductive slip ring 4; the connecting column 32 has three second screw holes 322 evenly distributed in the circumferential direction for fixing the connecting column 32 and the inner rotor 42.

[0019] like Figure 4 As shown, the cap-type conductive slip ring 4 provided in this embodiment includes an outer rotor 41 and an inner rotor 42; the inner rotor 42 can rotate relative to the outer stator 41 and always maintain electrical connection; the circular flange of the outer stator 41 is evenly distributed with slip ring mounting holes 411 for fixing the outer stator 41 and the slip ring mounting sleeve 1.

[0020] like Figure 1 , Figure 5 and Figure 6As shown, the slip ring mounting sleeve 1 is fixedly accommodated in the inner part of the directional drilling radar outer tube 5; the outer stator 41 of the cap-type conductive slip ring 4 is fixedly mounted on the slip ring mounting hole 11 inside the slip ring mounting sleeve 1 by means of screws 6; the bearing outer ring 21 of the bearing 2 is interference fit in the slip ring mounting hole 11; the connecting column 32 is transitionally fitted in the inner ring 22 of the bearing, and the inner rotor 42 of the cap-type conductive slip ring 4 is accommodated in its internal through hole 321; the set screw 7 is screwed into the second screw hole 322 at the end of the connecting column 32 to fix the inner rotor 42 to the connecting column 32.

[0021] When the directional drilling radar is working, the carrying plate 3 rotates continuously inside the directional drilling radar, and the geological signals collected by the acquisition and control board 31 are transmitted to the inner rotor 42 through the wire, and then transmitted to the radar interface through the cap-type conductive slip ring 4.

[0022] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A cap-type conductive slip ring installation structure for directional drilling radar, characterized in that: It comprises a slip ring mounting sleeve (1), a bearing (2), a mounting plate (3) and a cap-type conductive slip ring (4); The slip ring mounting sleeve (1) is provided with a slip ring mounting hole (11) inside, and a bearing mounting hole (12) at the end; The bearing (2) is a bidirectional bearing, comprising a bearing outer ring (21) and a bearing inner ring (22); The mounting plate (3) is a component used to mount a radar acquisition and control plate (31), and one end of the mounting plate is provided with a connecting column (32); a through hole (33) is provided inside the connecting column (32); The cap-type conductive slip ring (4) comprises an outer stator (41) and an inner rotor (42), wherein the inner rotor (42) can rotate relative to the outer stator (41) and always maintain electrical connection; The slip ring mounting sleeve (1) is fixedly accommodated inside the outer tube (5) of the directional drilling radar; the outer stator (41) of the cap-type conductive slip ring (4) is fixedly accommodated on the slip ring mounting hole (11) inside the slip ring mounting sleeve (1); the bearing outer ring (21) is fixedly mounted on the slip ring mounting hole (11); the connecting column (32) passes through the bearing inner ring (22) and fixes the inner rotor (42) of the cap-type conductive slip ring (4) into its internal through hole (321); When the directional drilling radar is working, the carrier plate (3) rotates continuously inside the directional drilling radar, and the collected geological signals are transmitted to the inner rotor (42) through a wire, and then transmitted to the radar interface through a cap-type conductive slip ring (4).

2. The cap-type conductive slip ring installation structure for directional drilling radar according to claim 1 is characterized in that: First screw holes (13) are evenly distributed on the end surface of the slip ring mounting hole (11), and corresponding slip ring mounting holes (411) are evenly distributed on the circular flange of the outer stator (41); screws (6) pass through the slip ring mounting holes (411) and are connected to the first screw holes (13), thereby fixing the outer stator (41) of the cap-type conductive slip ring (4) inside the slip ring mounting sleeve (1).

3. The cap-type conductive slip ring installation structure for directional drilling radar according to claim 1, characterized in that: The bearing outer ring (21) and the sliding ring mounting hole (11) are in an interference fit, and the connecting column (32) and the bearing inner ring (22) are in a transition fit.

4. The cap-type conductive slip ring installation structure for directional drilling radar according to claim 1, characterized in that: The connecting column (32) is evenly distributed with second screw holes (322) in the circumferential direction, and a set screw (7) is screwed into the second screw hole (322) to fix the inner rotor (42) and the connecting column (32).

5. The cap-type conductive slip ring installation structure for directional drilling radar according to claim 1, characterized in that: The slip ring mounting sleeve (1) is provided with a square hole (14) in the circumference; when assembling internal components of the radar, a screwdriver can pass through the square hole (14) to complete the installation of the set screw (7).

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