A core orientation device for azimuthal dip measurement

Abstract

The utility model relates to geological exploration equipment technical field discloses a kind of core azimuth inclination measurement orientation device, including take-up reel, cable and measurement orientation plate, rotating groove is opened in take-up reel inner wall, inside is provided with take-up and pay-off mechanism, rotate column is driven ratchet wheel, first fixed plate and symmetrically distributed connecting plate drive rotating plate to rotate in rotating groove to take-up and pay-off cable, take-up reel inner wall is rotatably connected with the first limit board and the second limit board that spring is resisted to top to be engaged with ratchet wheel, and limit column inserted in reserved hole is cooperated with take-up reel inner wall to keep the unlocking state of limit board, measurement orientation plate both sides are fixed with the guide mechanism of double roller. The utility model uses ratchet wheel cooperation limit column plug-in keeps structure, realizes the stable hovering of single person convenient operation and arbitrary depth, and guide mechanism converts well wall sliding friction into rolling friction, effectively buffers impact and protects precision probe.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration equipment technology, and in particular to a core azimuth and dip measurement orientation device. Background Technology

[0002] In deep geological prospecting and exploration projects, accurately obtaining the azimuth and dip data of rock cores is a key step in analyzing geological structural characteristics. This usually requires using a specialized cable winch to lower measuring instruments deep into the borehole for operation.

[0003] However, existing cable reeling and unloading devices have relatively simple structures, mostly using a handle to directly drive the drum rotation. They lack effective self-locking or arbitrary position suspension auxiliary mechanisms. This means that if the operator needs to stop midway to record data or make adjustments during the instrument lowering or retrieval process, they must continuously apply force to hold down the handle to overcome the gravity of the instrument inside the hole. This makes it difficult to achieve easy operation by a single person and stable suspension at any depth. Furthermore, frequent mechanical start-stop operations can easily cause operator fatigue and pose safety hazards. At the same time, when existing measuring probes are lowered into complex open-hole sections, the probe shell often directly experiences rigid sliding friction with the rough hole wall, which can easily lead to wear on the precision instrument shell, interference with signal transmission, or even jamming accidents.

[0004] Therefore, this utility model proposes a core azimuth and dip angle measurement orientation device to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing technology, such as the lack of convenient self-locking function in the wire take-up and release device of core measurement equipment, the difficulty for a single person to independently complete the hovering operation at any position, and the easy occurrence of rigid friction between the measuring probe and the well wall when moving downhole, which can lead to equipment damage or jamming, this utility model aims to provide a core azimuth and dip angle measurement orientation device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a core azimuth and dip measurement orientation device, comprising: a take-up reel, a cable wound inside the take-up reel, a measurement orientation plate connected to the end of the cable, and a guide mechanism disposed on both sides of the measurement orientation plate.

[0007] The inner wall of the take-up reel has an annular rotating groove, and a rotating plate is slidably connected in the rotating groove. The cable is wound around the outer wall of the rotating plate.

[0008] Furthermore, the take-up reel is internally equipped with a take-up and release mechanism. The take-up and release mechanism includes a rotating column rotatably connected to the center of the inner wall of the take-up reel. A ratchet is fixedly sleeved on the outer wall of the rotating column. A first fixing plate is fixedly connected to the outer wall of the ratchet. Symmetrically distributed connecting plates are fixedly connected to the outer wall of the first fixing plate. The end of the connecting plate away from the first fixing plate is fixedly connected to the inner wall of the rotating plate. A first limiting plate is rotatably connected to the inner wall of the take-up reel. One end of the first limiting plate extends into the tooth groove of the ratchet and meshes with the ratchet. The rotating column drives the ratchet, the first fixing plate, and the connecting plate to rotate synchronously, thereby driving the rotating plate to perform take-up and release operations. The position is locked by the cooperation between the first limiting plate and the ratchet.

[0009] Preferably, a reserved hole is provided through the first limiting plate, and a limiting post is slidably inserted into the reserved hole. A positioning blind hole is provided on the inner wall of the take-up reel corresponding to the position of the limiting post. One end of the limiting post can be inserted into the positioning blind hole to fix the first limiting plate to the inner wall of the take-up reel when the first limiting plate is disengaged from the ratchet, thereby maintaining the unlocked state.

[0010] Preferably, a first spring is fixedly connected between the inner wall of the take-up reel and the side wall of the first limiting plate. The two ends of the first spring are respectively fixed to the inner wall of the take-up reel and the side of the first limiting plate facing the inner wall of the take-up reel, so as to provide elastic restoring force to maintain the meshing tendency of the first limiting plate and the ratchet.

[0011] Preferably, the inner wall of the take-up reel is rotatably connected to a second limiting plate. The second limiting plate and the first limiting plate are symmetrically distributed about the axis of the rotating column. One end of the second limiting plate extends into the tooth groove of the ratchet and meshes with the ratchet. The reserved hole is also provided on the plate body of the second limiting plate to cooperate in realizing bidirectional locking control.

[0012] Preferably, a second spring is fixedly connected between the inner wall of the take-up reel and the side wall of the second limiting plate. The limiting post is also inserted into the reserved hole on the second limiting plate. The limiting post is inserted into the inner wall of the take-up reel to maintain the unlocked position of the second limiting plate.

[0013] Preferably, there are two connecting plates, which are respectively fixed at both ends of the first fixed plate in the diameter direction. The connecting plates extend radially along the take-up reel and are on the same plane as the first fixed plate to balance the driving torque and prevent the rotating plate from being deflected by force.

[0014] Preferably, the guiding mechanism includes a second fixing plate fixedly connected to the outer wall of the measuring orientation plate. A plurality of rotating shafts are fixedly connected to the surface of the second fixing plate away from the measuring orientation plate. The plurality of rotating shafts are linearly arrayed along the length direction of the measuring orientation plate to provide a support base for rolling.

[0015] Preferably, each of the rotating shafts is rotatably connected to a double roller on its outer wall. The rolling axis of the double roller is parallel to the surface of the measuring orientation plate, which is used to convert the sliding friction between the measuring orientation plate and the well wall into rolling friction.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problems of cumbersome operation of core measuring devices in the prior art, such as difficulty for a single person to independently complete long-term continuous operation of wire take-up and release, and inability to reliably hover and lock at any depth, by setting a ratchet and a limiting plate inside the take-up reel. The innovative design of a self-locking retention structure with a reserved hole, a limiting post and a positioning blind hole on the limiting plate solves the problems of cumbersome wire take-up and release operation, difficulty for a single person to independently complete long-term continuous wire take-up and release, and inability to reliably hover and lock at any depth. The technical effect is that the operator can easily lock the device in free rotation mode or braking mode by inserting and removing the limiting post, realize efficient operation by a single person, and ensure that the measuring plate can be stably hovered at the designated position downhole.

[0018] 2. This utility model solves the problem in the prior art where the measuring probe easily experiences rigid sliding friction with the rough well wall when moving downhole, leading to scratches and damage to the equipment casing or jamming due to excessive resistance. It achieves the technical effect of converting the sliding friction between the probe and the well wall into rolling friction with less resistance, effectively buffering impacts, protecting precision measuring instruments from damage, and improving the smoothness of equipment descent and retrieval.

[0019] 3. This utility model solves the problems of uneven force distribution in the internal transmission chain and easy tilting and jamming of rotating parts in the slide groove of the existing winding device by adopting a linkage transmission structure in which a rotating column drives a ratchet and a first fixed plate, and then drives the outer ring rotating plate through symmetrically distributed connecting plates. It achieves the technical effect of effectively dispersing the driving torque, ensuring that the rotating plate rotates smoothly and is evenly stressed in the rotating groove on the inner wall of the winding reel, thereby extending the overall mechanical life of the device. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a core azimuth and dip angle measurement orientation device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the rotating plate of a rock core azimuth and dip angle measurement orientation device proposed in this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0024] Legend:

[0025] 1. Take-up reel; 2. Cable; 3. Measuring and orientation plate; 4. Take-up and unload mechanism; 401. Rotating column; 402. First fixed plate; 403. Ratchet; 404. Connecting plate; 405. First limiting plate; 406. First spring; 407. Reserved hole; 408. Limiting column; 409. Second spring; 410. Second limiting plate; 411. Rotating plate; 412. Rotating groove; 5. Guide mechanism; 501. Second fixed plate; 502. Rotating shaft; 503. Double rollers. Detailed Implementation

[0026] 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.

[0027] Please refer to Figures 1 to 4 This utility model provides a core azimuth and dip angle measurement orientation device, which aims to solve the structural defects of existing core measurement equipment, such as the inability to easily achieve arbitrary position suspension and locking under single-person operation during the wire laying and winding process, and the easy damage caused by rigid friction between the measurement probe and the well wall.

[0028] like Figure 1 and Figure 2 As shown, the main structure of the core azimuth and dip measurement orientation device includes a take-up reel 1 as a mounting and storage base, a cable 2 wound inside the take-up reel 1 for transmitting signals and hoisting equipment, and a measurement orientation plate 3 fixedly connected to the end of the cable 2 for data acquisition by penetrating the core borehole. The take-up reel 1 has a disc-shaped structure and provides support and protection space for the internal components. The inner wall of the take-up reel 1 has an annular rotating groove 412 along the circumferential direction. The rotating plate 411 with an annular structure is slidably connected in the rotating groove 412. The outer wall of the rotating plate 411 serves as the winding carrier for the cable 2, and the cable 2 can be stored and released by rotating within the rotating groove 412.

[0029] To achieve drive control and position locking of the rotating plate 411, a take-up and undo mechanism 4 is provided in the central area of ​​the take-up reel 1. This take-up and undo mechanism 4 forms a linked mechanical transmission with the rotating plate 411. Simultaneously, to ensure the stability of the measuring orientation plate 3 during lowering and lifting, guide mechanisms 5 are fixedly installed on both outer walls of the measuring orientation plate 3. The guide mechanisms 5 provide auxiliary support and guidance for the measuring orientation plate 3 through rolling contact. Further refining the structural composition and connection relationship of the take-up and undo mechanism 4, a rotating column 401 is rotatably connected to the geometric center of the inner wall of the take-up reel 1. The rotating column 401 serves as the main power input end, and a ratchet 403 is fixedly sleeved on its outer wall. The ratchet 403 rotates synchronously with the rotating column 401. A first fixed plate 402 is further fixedly connected to the outer wall of the ratchet 403. The first fixed plate 402 serves as an intermediate transmission component, and its outer wall extends radially and is fixedly fixed. The device is connected by symmetrically distributed connecting plates 404. The ends of the two connecting plates 404 away from the first fixed plate 402 are respectively fixedly connected to the inner wall of the rotating plate 411, thereby constructing a rigid transmission chain that transmits power from the rotating column 401 through the ratchet 403, the first fixed plate 402, and the connecting plates 404 to the rotating plate 411. This allows the rotation of the rotating column 401 to directly drive the rotating plate 411 to rotate coaxially within the rotating groove 412, thus completing the cable 2 winding and unwinding operation. The inner wall of the take-up reel 1 is also rotatably connected to a first limiting plate 405 and a second limiting plate 410 that is symmetrical about the axis of the rotating column 401 with respect to the first limiting plate 405. The ends of the first limiting plate 405 and the second limiting plate 410 can extend into the tooth groove of the ratchet 403 and mesh with the outer teeth of the ratchet 403. This meshing relationship restricts the rotation of the ratchet 403 and the entire transmission chain, thereby realizing the device's hovering and locking function.

[0030] The first limiting plate 405, serving as a component for controlling the wire release locking, is rotatably connected to the inner wall of the take-up reel 1 via a pin. A first spring 406 is fixedly connected between the inner wall of the take-up reel 1 and the outer wall of the first limiting plate 405. The two ends of the first spring 406 are respectively fixedly anchored to the inner wall of the take-up reel 1 and the surface of the first limiting plate 405 facing away from the ratchet 403. In its natural state, the first spring 406 provides a continuous elastic thrust, causing the end of the first limiting plate 405 to engage in the tooth groove of the ratchet 403 to restrict the rotation of the ratchet 403. To achieve self-holding in the unlocked state, the surface of the first limiting plate 405... A pre-drilled hole 407 is provided vertically through the surface. A limiting post 408 is slidably inserted inside the pre-drilled hole 407. A positioning blind hole is provided on the inner wall of the take-up reel 1 corresponding to the position after the first limiting plate 405 is pressed down. When the first limiting plate 405 is pressed down to compress the first spring 406 and disengage it from the ratchet 403, the limiting post 408 is pushed down along the pre-drilled hole 407 and inserted into the positioning blind hole on the inner wall of the take-up reel 1. The first limiting plate 405 is locked in the open position separated from the ratchet 403 by the insertion and fixing effect of the limiting post 408 and the positioning blind hole, so that the free wire feeding state can be maintained without continuous pressing.

[0031] The second limiting plate 410, which works in conjunction with the first limiting plate 405, adopts the same structural logic and is symmetrically distributed about the center of the ratchet 403. A second spring 409 is fixedly connected between the inner wall of the take-up reel 1 and the second limiting plate 410. The second limiting plate 410 also has a reserved hole 407 for the sliding of the limiting post 408, and the inner wall of the take-up reel 1 at the corresponding position is also provided with a positioning blind hole. The second limiting plate 410 engages with the ratchet 403 through the elastic force of the second spring 409, and can also be kept in the unlocked state by inserting the limiting post 408 into the positioning blind hole. This design of double limiting plates and double pins ensures that the take-up and unwinding mechanism 4 can independently switch between the three working states of locking, unlocking and holding unlock during clockwise take-up or counterclockwise unwinding.

[0032] Based on the above embodiments, this utility model also includes a preferred structural design for transmission structure stability and downhole guide protection:

[0033] To ensure the balance of power transmission in the take-up and unwind mechanism 4, the number of connecting plates 404 is preferably set to two, and the two connecting plates 404 are respectively fixedly arranged at both ends of the diameter direction of the first fixed plate 402 to form a centrally symmetrical structure. The inner ring surface of the first fixed plate 402 is fixedly sleeved on the outer circumferential surface of the ratchet 403 by key connection or interference fit. The connecting plate 404 and the first fixed plate 402 are in the same plane and extend outward along the radial direction of the take-up reel 1. The end of the connecting plate 404 away from the first fixed plate 402 is rigidly connected to the inner side wall of the rotating plate 411 by welding or bolt fastening. This double-link symmetrical drive structure can effectively disperse the force on the rotating plate 411 when it rotates, and avoid the rotating plate 411 from tilting or getting stuck in the rotating groove 412 due to unilateral force, thus ensuring the smoothness of the take-up and unwind process.

[0034] For the requirements of the directional measuring plate 3 in complex core cavity environments regarding its passability and protection, please refer to... Figure 1 and Figure 4 Guide mechanisms 5 are fixedly installed on both outer walls of the measuring orientation plate 3. The guide mechanism 5 includes a long strip-shaped second fixing plate 501. The second fixing plate 501 is attached to the side surface of the measuring orientation plate 3 by screw fastening or welding. Multiple rotating shafts 502 are linearly arrayed along the length of the side surface of the second fixing plate 501 away from the measuring orientation plate 3 and facing the borehole wall. Each rotating shaft 502 has a double roller 503 rotatably connected to its outer cylindrical surface. The double rollers 503 are made of wear-resistant rubber or high-strength nylon. The rolling axis of the double rollers 503 is parallel to the surface of the measuring orientation plate 3. The outer diameter of the double rollers 503 is designed so that its edge protrudes from the outer contour of the measuring orientation plate 3 and the second fixing plate 501. When the measuring orientation plate 3 moves downhole, the double rollers 503 can contact the borehole wall first and suspend and support the measuring orientation plate 3. This transforms the original rigid sliding friction between the measuring orientation plate 3 and the borehole wall into rolling friction with less resistance, effectively preventing the outer shell of the measuring equipment from being scratched by sharp protrusions of the rock wall.

[0035] The working principle of the core azimuth and dip angle measurement orientation device of this utility model is as follows:

[0036] When core azimuth and dip measurements are required and the equipment is lowered, the operator first presses the first limiting plate 405 on the inner wall of the take-up reel 1 inward, forcing the first limiting plate 405 to deflect the first spring 406 and disengage from the ratchet 403. At this time, the limiting pin 408 is quickly inserted into the reserved hole 407 on the surface of the first limiting plate 405 and its end is inserted into the preset positioning blind hole on the inner wall of the take-up reel 1, thereby locking the first limiting plate 405 in the open position separated from the ratchet 403 to maintain the free rotation of the take-up and unwinding mechanism 4. Then, the take-up and unwinding mechanism is rotated counterclockwise. In mechanism 4, the rotating column 401 drives the ratchet 403 fixed on its outer wall and the first fixed plate 402 to rotate synchronously. The first fixed plate 402 drives the outer rotating plate 411 to rotate synchronously in the rotating groove 412 through its extended connecting plate 404, thereby releasing the cable 2 wrapped around the outer wall of the rotating plate 411. As the cable 2 continues to descend, the measuring orientation plate 3 enters the core hole. During this process, the guide mechanism 5 located on both sides of the measuring orientation plate 3 plays a role. The double rollers 503 installed on the rotating shaft 502 contact the hole wall. The rotating plate 411 adaptively rotates around the pivot 502. The double rollers 503 transform the intense sliding friction between the measuring orientation plate 3 and the hole wall into smooth rolling friction, providing auxiliary guidance and buffer protection for the lowering path of the measuring orientation plate 3. When the measuring orientation plate 3 reaches the designated depth and needs to hover for data acquisition, the limiting post 408 is pulled outward to release the position lock of the first limiting plate 405. Under the elastic restoring force of the first spring 406, the first limiting plate 405 quickly resets and re-engages into the tooth groove of the ratchet 403, preventing the rotating plate 411 from rotating unintended. To achieve stable suspension of cable 2 and measuring equipment, after completing the measurement task, press the second limiting plate 410 to squeeze the second spring 409 and disengage it from the ratchet 403. Similarly, use the limiting post 408 inserted into the reserved hole 407 to maintain the unlocked state. At this time, rotate the rotating post 401 clockwise, and through the ratchet 403, the first fixing plate 402 and the connecting plate 404, drive the rotating plate 411 to rotate in the opposite direction, so that cable 2 is orderly stored back into the rotating groove 412. After the cable is retracted, release the second limiting plate 410 so that it re-engages and locks with the ratchet 403, thus completing the entire measurement and recycling process.

[0037] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A core azimuth and dip measurement orientation device, comprising a take-up reel (1), a cable (2), a measurement orientation plate (3), and a guide mechanism (5) disposed on both sides of the measurement orientation plate (3). The inner wall of the take-up reel (1) is provided with an annular rotating groove (412), and a rotating plate (411) is slidably connected in the rotating groove (412). The cable (2) is wound around the outer wall of the rotating plate (411). Its features are, The take-up reel (1) is provided with a take-up and release mechanism (4). The take-up and release mechanism (4) includes a rotating column (401) rotatably connected to the center of the inner wall of the take-up reel (1). A ratchet (403) is fixedly sleeved on the outer wall of the rotating column (401). A first fixing plate (402) is fixedly connected to the outer wall of the ratchet (403). A symmetrically distributed connecting plate (404) is fixedly connected to the outer wall of the first fixing plate (402). One end of the connecting plate (404) away from the first fixing plate (402) is fixedly connected to the inner wall of the rotating plate (411). A first limiting plate (405) is rotatably connected to the inner wall of the take-up reel (1). One end of the first limiting plate (405) extends into the tooth groove of the ratchet (403) and meshes with the ratchet (403).

2. The core azimuth and dip measurement orientation device according to claim 1, characterized in that, A reserved hole (407) is provided through the plate body of the first limiting plate (405). A limiting post (408) is slidably inserted into the reserved hole (407). A positioning blind hole is provided on the inner wall of the take-up reel (1) corresponding to the position of the limiting post (408). One end of the limiting post (408) can be inserted into the positioning blind hole to limit the position of the first limiting plate (405).

3. The core azimuth and dip measurement orientation device according to claim 1, characterized in that, A first spring (406) is fixedly connected between the inner wall of the take-up reel (1) and the side wall of the first limiting plate (405). The two ends of the first spring (406) are respectively fixed to the inner wall of the take-up reel (1) and the side of the first limiting plate (405) facing the inner wall of the take-up reel (1).

4. The core azimuth and dip measurement orientation device according to claim 2, characterized in that, The inner wall of the take-up reel (1) is also rotatably connected to a second limiting plate (410). The second limiting plate (410) and the first limiting plate (405) are symmetrically distributed about the axis of the rotating column (401). One end of the second limiting plate (410) extends into the tooth groove of the ratchet (403) and meshes with the ratchet (403). The reserved hole (407) is also provided on the plate body of the second limiting plate (410).

5. The core azimuth and dip measurement orientation device according to claim 4, characterized in that, A second spring (409) is fixedly connected between the inner wall of the take-up reel (1) and the side wall of the second limiting plate (410). The limiting post (408) is also inserted into the reserved hole (407) on the second limiting plate (410). The limiting post (408) is inserted into the inner wall of the take-up reel (1).

6. The core azimuth and dip measurement orientation device according to claim 1, characterized in that, There are two connecting plates (404), which are respectively fixed at both ends of the first fixing plate (402) in the diameter direction. The connecting plates (404) extend radially along the take-up reel (1) and are in the same plane as the first fixing plate (402).

7. The core azimuth and dip measurement orientation device according to claim 1, characterized in that, The guiding mechanism (5) includes a second fixing plate (501) fixedly connected to the outer wall of the measuring orientation plate (3). A plurality of rotating shafts (502) are fixedly connected to the side surface of the second fixing plate (501) away from the measuring orientation plate (3). The plurality of rotating shafts (502) are linearly arrayed along the length direction of the measuring orientation plate (3).

8. The core azimuth and dip measurement orientation device according to claim 7, characterized in that, Each of the rotating shafts (502) has a double roller (503) rotatably connected to its outer wall, and the rolling axis of the double roller (503) is parallel to the surface of the measuring orientation plate (3).

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