A downhole probe protection device

Abstract

The application discloses a downhole probe protection device and relates to the technical field of geophysical exploration. The downhole probe protection device comprises vertical plates arranged on both sides of the top end of a trolley, a motor arranged on one side of the vertical plate, a rotating rod arranged at the output end of the motor, a winding roller arranged on the surface of the rotating rod, baffle plates arranged at both ends of the winding roller, a rope arranged on the surface of the winding roller and an exploration device arranged at one end of the rope. A protection assembly is arranged between the rotating rod and the winding roller. The protection assembly comprises a first sleeve arranged on the inner wall of the winding roller, a first spring arranged in the first sleeve and a first T-shaped rod connected to one side of the first spring. In the application, when the instrument is hindered, the arc-shaped groove can extrude the arc-shaped block, the motor can drive the rotating rod to idle, the winding roller and other rotating parts are prevented from continuously rotating, the instrument is prevented from being damaged due to extrusion, and the motor is prevented from being damaged due to too large load.

Description

Technical Field

[0001] This invention relates to the field of geophysical exploration technology, and in particular to a downhole probe protection device. Background Technology

[0002] Geophysical exploration involves studying and observing changes in various geophysical fields to detect geological conditions such as lithology and geological structure. Different rock formations often differ in density, elasticity, electrical conductivity, magnetism, radioactivity, and thermal conductivity, leading to specific changes in corresponding geophysical fields. By measuring the distribution and variation characteristics of these physical fields and analyzing them in conjunction with known geological data, the geological properties can be inferred. Conducting geophysical exploration before mining can effectively predict the geological characteristics within a mine, facilitating subsequent mining operations. Changes in some physical quantities require the use of probes to detect them.

[0003] Existing probes are usually used in conjunction with protective covers to protect them (such as the protection device for a logging probe shown in publication number CN207348846U). Although the protective cover can protect the probe, during the movement of the probe and the protective cover downhole, the protective cover can easily be obstructed by protruding rocks or other objects inside the well, thus affecting the retrieval of the probe. Summary of the Invention

[0004] This invention provides a drilling probe protection device. Through the set movable component, when the baffle is obstructed, the baffle can drive the connecting rod, connecting strip and support rod to move. The pulley at one end of the support rod can be moved to the inner wall of the well and squeezed, thereby moving the entire device away from the bottom of the obstacle. This facilitates the winding equipment to wind up the rope and probe equipment, thus solving the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drilling probe protection device includes a probe body installed at the bottom of a mounting plate;

[0007] The surface of the mounting plate is provided with a movable component;

[0008] The movable component includes a baffle disposed on the surface of the mounting plate;

[0009] The moving component also includes an annular sleeve equidistantly arranged at the bottom of the mounting plate, and a connecting rod is slidably connected inside the sleeve. The bottom end of the connecting rod is connected to a connecting strip via a movable shaft.

[0010] The bottom of the probe body is connected to an annular plate via a fixing rod, and the surface of the annular plate is provided with mounting grooves at equal intervals. A rotating rod is rotatably connected to the inner wall of the mounting groove, and a support rod is connected to the surface of the rotating rod. One end of the support rod is connected to a pulley.

[0011] As a further description of the above technical solution:

[0012] The connecting strip and the support rod are connected by a movable shaft.

[0013] As a further description of the above technical solution:

[0014] The top of the baffle is provided with a ball bearing, and the surface of the baffle is provided with a moving groove for the support rod to move.

[0015] As a further description of the above technical solution:

[0016] The inner bottom of the sleeve is connected to a spring that is connected to a connecting rod. The inner walls of the sleeve are respectively connected to sliding grooves, and the sliding grooves are connected to sliders that are connected to the connecting rod.

[0017] As a further description of the above technical solution:

[0018] The rotating rod is equipped with a torsion spring inside, and the torsion spring is equipped with a positioning rod that is fixedly connected to the inner wall of the mounting groove.

[0019] As a further description of the above technical solution:

[0020] The baffle is connected to the surface of the connecting rod via a connecting block.

[0021] As a further description of the above technical solution:

[0022] The baffles are arranged in a ring at equal intervals on the surface of the mounting plate.

[0023] As a further description of the above technical solution:

[0024] The distance between the pulleys should be less than the distance between the outermost edges of the two symmetrically arranged baffles.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In this invention, by means of a movable component, when the baffle is obstructed, the baffle can move the connecting rod, connecting strip and support rod, so that the pulley at one end of the support rod can be moved to the inner wall of the well and squeezed, thereby moving the entire equipment away from the bottom of the obstacle, so that the winding equipment can wind up the rope and probe equipment. Attached Figure Description

[0027] Figure 1 A schematic diagram of a downhole probe protection device;

[0028] Figure 2 This is a schematic diagram of the bottom part of the mounting plate in this invention;

[0029] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0030] Figure 4 This is a schematic diagram of the internal structure of the sleeve in this invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the rotating rod in this invention.

[0032] Legend:

[0033] 1. Mounting plate; 2. Probe body; 3. Baffle; 4. Sleeve; 5. Connecting rod; 6. Connecting strip; 7. Annular plate; 8. Mounting groove; 9. Rotating rod; 10. Support rod; 11. Pulley; 12. Ball bearing; 13. Moving groove; 14. Spring; 15. Slide groove; 16. Slider; 17. Torsion spring; 18. Positioning rod. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1-5A drilling probe protection device includes a probe body 2 mounted on the bottom of a mounting plate 1; a movable assembly is provided on the surface of the mounting plate 1; the movable assembly includes a baffle 3 disposed on the surface of the mounting plate 1; the movable assembly also includes a sleeve 4 equidistantly disposed in an annular pattern at the bottom of the mounting plate 1, and a connecting rod 5 is slidably connected inside the sleeve 4, the bottom end of the connecting rod 5 being connected to a connecting strip 6 via a movable shaft; the bottom end of the probe body 2 is connected to an annular plate 7 via a fixed rod, and the surface of the annular plate 7 is provided with mounting grooves equidistantly arranged in an annular pattern, the inner wall of the mounting grooves 8 being rotatably connected to a rotating rod 9, and the rotating rod 9 being rotatably connected to the inner wall of the mounting grooves 8. A support rod 10 is connected to the surface of the moving rod 9. One end of the support rod 10 is connected to a pulley 11. When the baffle 3 moves to the bottom of the obstacle and continues to move, the baffle 3 can be blocked by the obstacle and move on the surface of the mounting plate 1. This allows the baffle 3 to drive the connecting rod 5, connecting strip 6 and support rod 10 to move. The support rod 10 can be rotated and moved inside the moving groove 13 by rotating the rod 9. This allows the pulley 11 at one end of the support rod 10 to be moved to the inner wall of the well and squeezed. The entire equipment can be moved away from the bottom of the obstacle, making it easier to remove the probe body 2 and other components from inside the well.

[0036] Furthermore, the connecting bar 6 and the support rod 10 are connected by a movable shaft, which allows the connecting bar 6 to rotate and move the support rod 10, which is connected to it by the movable shaft, through the rotating rod 9 when the connecting rod 5 drives the connecting bar 6 to move.

[0037] Furthermore, a ball bearing 12 is provided at the top of the baffle 3, and a moving groove 13 for the support rod 10 to move is provided on the surface of the baffle 3. The ball bearing 12 facilitates the baffle 3 to be moved away from the bottom of the obstacle, thereby facilitating the overall winding of the equipment.

[0038] Furthermore, the inner bottom end of the sleeve 4 is connected to a spring 14 connected to the connecting rod 5. The inner walls of the sleeve 4 are respectively connected to sliding grooves 15, and the sliding grooves 15 are connected to a slider 16 connected to the connecting rod 5. The slider 16 and the sliding grooves 15 facilitate the limiting movement of the connecting rod 5, while the spring 14 facilitates the reset of the connecting rod 5 when it is not subjected to external force.

[0039] Furthermore, a torsion spring 17 is provided inside the rotating rod 9, and a positioning rod 18 is fixedly connected to the inner wall of the mounting groove 8 inside the torsion spring 17. The torsion spring 17 and the rotating rod 9 facilitate the rotation and movement of the support rod 10, and also facilitate its reset.

[0040] Furthermore, the baffle 3 is connected to the surface of the connecting rod 5 via a connecting block, which facilitates the movement of the baffle 3, which in turn moves the connecting rod 5, the connecting strip 6, and the support rod 10, making it easier to move the pulley 11 at one end of the support rod 10 to the inner wall of the well and squeeze it, so that the entire equipment can be moved away from the bottom of the obstacle.

[0041] Furthermore, the baffles 3 are arranged in a ring at equal intervals on the surface of the mounting plate 1. This is to facilitate the protection of the probe body 2 at the center by the ring at equal intervals of the baffles 3, so as to avoid the probe body 2 being damaged by friction from stones or other objects.

[0042] Furthermore, the distance between the two symmetrical pulleys 11 should be less than the distance between the outermost edges of the two symmetrically arranged baffles 3. This is to prevent the pulleys 11 from being exposed on both sides of the baffles 3, which could cause obstacles to block the pulleys 11 and affect the normal movement of the probe body 2.

[0043] Working principle: When in use, when the equipment moves to the bottom of the obstacle on the inner wall of the well, continuous movement will cause the obstacle to press against the baffle 3, which will cause the baffle 3 to move the connecting rod 5, connecting bar 6 and support rod 10. The support rod 10 will drive the pulley 11 to rotate and move through the moving groove 13, which will move the pulley 11 on one side of the support rod 10 to the inner wall of the well and press it, thereby moving the entire equipment away from the bottom of the obstacle. At the same time, through the action of spring 14 and torsion spring 17, the baffle 3 and support rod 10 can be reset, which is convenient for protecting the probe body 2.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A downhole probe protection device, comprising a probe body (2) mounted on the bottom end of a mounting plate (1), characterized in that: The surface of the mounting plate (1) is provided with a movable component; The interior of the movable component includes a baffle (3) disposed on the surface of the mounting plate (1); The moving component also includes a sleeve (4) that is equidistantly arranged in a ring at the bottom of the mounting plate (1), and a connecting rod (5) is slidably connected inside the sleeve (4). The bottom end of the connecting rod (5) is connected to a connecting strip (6) through a movable shaft. The bottom end of the probe body (2) is connected to an annular plate (7) by a fixing rod, and the surface of the annular plate (7) is provided with mounting grooves (8) at equal intervals. The inner wall of the mounting groove (8) is rotatably connected to a rotating rod (9), and the surface of the rotating rod (9) is connected to a support rod (10). One end of the support rod (10) is connected to a pulley (11). The connecting strip (6) is connected to the support rod (10) via a movable shaft. The inner bottom of the sleeve (4) is connected to a spring (14) connected to the connecting rod (5). The inner walls of the sleeve (4) are connected to sliding grooves (15) on both sides, and the sliding grooves (15) are connected to a slider (16) connected to the connecting rod (5). The rotating rod (9) is provided with a torsion spring (17), and the torsion spring (17) is provided with a positioning rod (18) fixedly connected to the inner wall of the mounting groove (8). The baffle (3) is connected to the surface of the connecting rod (5) via a connecting block.

2. The drilling probe protection device according to claim 1, characterized in that: The top of the baffle (3) is provided with a ball (12), and the surface of the baffle (3) is provided with a moving groove (13) for the support rod (10) to move.

3. The drilling probe protection device according to claim 1, characterized in that: The baffles (3) are arranged in a ring at equal intervals on the surface of the mounting plate (1).

4. The drilling probe protection device according to claim 1, characterized in that: The distance between the two symmetrical pulleys (11) is less than the distance between the outermost edges of the two symmetrically arranged baffles (3).

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