Downhole detector

Abstract

The utility model relates to the technical field of mine geophysical prospecting equipment, in particular to an underground geophone which comprises a connecting shell, a protective cover and a geophone body, the geophone body is placed inside the protective cover, the top of the protective cover is in threaded connection with the bottom of the connecting shell, a plurality of containing grooves are formed in the outer side of the connecting shell in an array mode, and supporting rods are hinged to the upper ends of the containing grooves. An adjusting mechanism for adjusting the unfolding angle of the supporting rod is arranged in the connecting shell, the adjusting mechanism comprises an electric telescopic rod, a pressing plate, a limiting rod and a limiting spring, the electric telescopic rod is installed at the bottom of the interior of the connecting shell, and the output end of the electric telescopic rod is connected with the pressing plate. The limiting spring does not need large elastic force, the limiting rod can be completely contained in the containing groove of the connecting shell, no protruding part exists, the situation that the limiting rod is unfolded when the limiting rod is collided or falls off is avoided, and the stability of the whole device can be improved in the throwing process.

Description

Technical Field

[0001] This utility model relates to the field of mine geophysical exploration equipment technology, specifically to an underground geophone. Background Technology

[0002] A downhole geophone is a seismic exploration device used to measure the movement of underground rock structures and groundwater. It mainly consists of sensors, signal acquisition devices, and data transmission devices. By collecting seismic signals, it analyzes and detects underground structures.

[0003] A search revealed a Chinese patent (CN222125447U) that discloses a downhole geophone. This downhole geophone uses a motor and a lead screw to drive a positioning rod adjusting block to slide up and down. The positioning rod is then pressed by the adjusting block to unfold and fix it to the inner wall of the deep well. However, during use, part of the downhole geophone still protrudes outward. Although a magnet is added for fixation, a large magnetic force is required to prevent the protruding part from being pushed open by a collision, which can easily increase the motor resistance and affect the motor's lifespan. Therefore, we propose a downhole geophone. Utility Model Content

[0004] The technical problem to be solved by this application is that the downhole detector still protrudes outward during use. Although magnets have been added for fixation, a large magnetic force is required to prevent the protruding part from being pushed open by collision, which can easily increase the motor resistance and affect the motor's lifespan.

[0005] To address the aforementioned technical problems, this application provides a downhole geophone, comprising a connecting shell, a protective cover, and a geophone body. The geophone body is placed inside the protective cover, and the top of the protective cover is threadedly connected to the bottom of the connecting shell. Multiple storage slots are arrayed on the outer side of the connecting shell, and a support rod is hinged to the upper end of each storage slot. An adjustment mechanism for adjusting the unfolding angle of the support rod is provided inside the connecting shell.

[0006] In some embodiments, the adjustment mechanism includes an electric telescopic rod, a pressure plate, a limiting rod, and a limiting spring. The electric telescopic rod is installed at the bottom inside the connecting housing, and the output end of the electric telescopic rod is connected to the pressure plate.

[0007] In some embodiments, the limiting rod is installed inside the support rod, and the top of the limiting rod is connected to the top of the inside of the connecting shell by a limiting spring.

[0008] In some embodiments, the end of the limiting rod away from the support rod is inclined downward, and the bottom of the pressure plate is provided with a plurality of grooves, the interior of which is fitted with guide wheels, which make rolling contact with the top of the limiting rod.

[0009] In some embodiments, the top of the connecting housing is fitted with a handle for connecting an external pull cord.

[0010] In some embodiments, two flexible tubes are connected through the interior of the connecting housing. The interior of each flexible tube is provided with wires that connect to the outside. One of the wires extends out of the flexible tube and connects to the electric telescopic rod, while the other wire extends out of the flexible tube and connects to the detector body.

[0011] In some embodiments, the two hoses pass through the pressure plate, and a gap is provided between the electric telescopic rod and the limiting rod for the hoses to pass through.

[0012] This utility model has at least the following beneficial effects:

[0013] When not in use, the support rod is limited by the limiting rod and the limiting spring. The limiting spring does not require a large elastic force, and the limiting rod can be completely retracted into the storage groove of the connecting shell without any protrusions. It will not unfold when subjected to collisions or falling, which can improve the stability of the entire device during deployment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0015] Figure 2 This is a partial sectional view of the connection structure between the connecting shell and the protective cover of this utility model;

[0016] Figure 3 This is a cross-sectional view of the internal structure of the connecting shell of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the guide wheel and the limiting rod of this utility model;

[0018] Figure 5 This is a schematic diagram of the unfolded structure of the support rod of this utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0020] In the diagram: 1. Connecting shell; 101. Storage slot; 2. Protective cover; 3. Detector body; 4. Support rod; 5. Adjustment mechanism; 6. Handle; 7. Flexible hose; 8. Electric telescopic rod; 9. Pressure plate; 10. Limiting rod; 11. Limiting spring; 12. Groove; 13. Guide wheel; 14. Support wheel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1-5 This utility model provides a technical solution: a downhole detector, including a connecting shell 1, a protective cover 2, and a detector body 3. The top of the connecting shell 1 is equipped with a handle 6 for connecting an external pull rope. The external pull rope is connected to the handle 6 to facilitate the placement of the whole into a deep well. The detector body 3 is placed inside the protective cover 2. The top of the protective cover 2 and the bottom of the connecting shell 1 are threaded together. Multiple storage slots 101 are arrayed on the outer side of the connecting shell 1. A support rod 4 is hinged to the upper end of the storage slot 101. An adjustment mechanism 5 for adjusting the unfolding angle of the support rod 4 is provided inside the connecting shell 1.

[0024] Furthermore, the adjustment mechanism 5 includes an electric telescopic rod 8, a pressure plate 9, a limiting rod 10, and a limiting spring 11. The electric telescopic rod 8 is installed at the bottom inside the connecting shell 1, and the output end of the electric telescopic rod 8 is connected to the pressure plate 9. The limiting rod 10 is installed on the inner side of the support rod 4, and the top of the limiting rod 10 is connected to the top inside the connecting shell 1 through the limiting spring 11.

[0025] The end of the limiting rod 10 away from the support rod 4 is inclined downward. Multiple grooves 12 are arrayed at the bottom of the pressure plate 9. Guide wheels 13 are installed inside the grooves 12. The guide wheels 13 roll in contact with the top of the limiting rod 10. The guide wheels 13 reduce the frictional resistance between the pressure plate 9 and the limiting rod 10.

[0026] Two flexible hoses 7 are connected through the interior of the connecting shell 1. The hoses 7 have wires that connect to the outside. The wire of one hose 7 extends out of the hose 7 and connects to the electric telescopic rod 8. The wire of the other hose 7 extends out of the hose 7 and connects to the detector body 3. The two hoses 7 pass through the pressure plate 9. There is a gap between the electric telescopic rod 8 and the limiting rod 10 for the hoses 7 to pass through. The wires are connected to the electric telescopic rod 8 and the detector body 3 respectively through the hoses 7, which is convenient for maintenance and use.

[0027] In use, the entire unit is placed into the deep well. During placement, the support rod 4 is located in the storage slot 101 and will not unfold even if it is bumped or falls. When it is placed to the appropriate depth, the electric telescopic rod 8 is activated. The electric telescopic rod 8 drives the pressure plate 9 to move downward. The pressure plate 9 drives the guide wheel 13 to roll on the limit rod 10, while simultaneously squeezing the limit rod 10. The limit rod 10 is forced to rotate and unfold the support rod 4, so that the support rod 4 fits and is fixed to the inner wall of the deep well. After the detector body 3 completes the detection, the electric telescopic rod 8 is activated, which drives the pressure plate 9 to move upward. The guide wheel 13 disengages from the limit rod 10, and the limit rod 10 is pulled into the storage slot 101 by the rebound force of the limit spring 11. At this time, it is convenient to take the entire unit out of the deep well.

[0028] Example 2

[0029] Please see Figure 6 This utility model provides a technical solution: Based on embodiment 1, this utility model provides another technical solution: multiple support wheels 14 are arrayed at both the upper and lower ends of the connecting shell 1. When in use, the support wheels 14 contact the inner wall of the deep well to improve the stability of the deployment.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A downhole detector, characterized in that: The device includes a connecting shell (1), a protective cover (2), and a detector body (3). The detector body (3) is placed inside the protective cover (2). The top of the protective cover (2) and the bottom of the connecting shell (1) are threaded together. Multiple storage slots (101) are arrayed on the outer side of the connecting shell (1). A support rod (4) is hinged to the upper end of the storage slot (101). An adjustment mechanism (5) for adjusting the unfolding angle of the support rod (4) is provided inside the connecting shell (1).

2. The downhole detector according to claim 1, characterized in that: The adjustment mechanism (5) includes an electric telescopic rod (8), a pressure plate (9), a limiting rod (10), and a limiting spring (11). The electric telescopic rod (8) is installed at the bottom inside the connecting shell (1), and the output end of the electric telescopic rod (8) is connected to the pressure plate (9).

3. The downhole detector according to claim 2, characterized in that: The limiting rod (10) is installed on the inner side of the support rod (4), and the top of the limiting rod (10) is connected to the top inside the connecting shell (1) by a limiting spring (11).

4. The downhole detector according to claim 3, characterized in that: The end of the limiting rod (10) away from the support rod (4) is inclined downward. The bottom of the pressure plate (9) is provided with a plurality of grooves (12). The grooves (12) are fitted with guide wheels (13). The guide wheels (13) are in rolling contact with the top of the limiting rod (10).

5. The downhole detector according to claim 1, characterized in that: The top of the connecting shell (1) is equipped with a handle (6) for connecting an external pull rope.

6. The downhole detector according to claim 2, characterized in that: The connecting shell (1) has two flexible tubes (7) that are connected through it. The flexible tubes (7) are equipped with wires that are connected to the outside. One of the wires of the flexible tube (7) extends out of the flexible tube (7) and is connected to the electric telescopic rod (8). The other wire of the flexible tube (7) extends out of the flexible tube (7) and is connected to the detector body (3).

7. The downhole detector according to claim 6, characterized in that: Two hoses (7) pass through the pressure plate (9), and a gap is provided between the electric telescopic rod (8) and the limiting rod (10) for the hoses (7) to pass through.

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