Geological compass for field geological survey

Abstract

The utility model relates to geological compass technical field discloses a geological compass for field geological investigation, include: bottom shell, the one end of bottom shell is hinged with the apron, is fixed with the dial of installation dial on bottom shell, apron has optional cover in the top of dial, the rotation axis is connected with perpendicular rotation of the penetration dial, and the upper end fixed connection of rotation axis has magnetism pointer, along the radial direction of rotation axis slide connection in the brake lever of bottom shell, and with brake lever connection's drive component, through the opening and closing apron, can drive drive component moves between first position and second position, when first position, brake lever and rotation axis intermittent cooperation, when second position, one end of brake lever and rotation axis friction contact, rotation axis brake limit position. The utility model can close and punch the apron 2 at the same time, effectively realize the brake and the brake release function of magnetism pointer, and then reduce additional operation process.

Description

Technical Field

[0001] This utility model relates to the field of geological compass technology, and in particular to a geological compass for field geological surveys. Background Technology

[0002] Field geological surveys are fundamental to geological research and resource exploration, and the geological compass, as an indispensable tool in field geological work, has broad application prospects. The pointer brake limiter of a geological compass is mainly used to fix the position of the magnetic needle and prevent accidental movement; releasing the limiter allows the magnetic needle to swing freely during measurement to determine direction. During use, the magnetic needle is fixed by tightening the brake screw to prevent damage to the internal structure caused by needle movement during transportation or storage. Before measurement, the brake screw must be loosened to allow the magnetic needle to swing freely in the horizontal plane for accurate measurement.

[0003] Existing geological compasses for field geological surveys have some technical defects in their use. For example, a geological compass for field geological surveys disclosed in patent document CN217980343U achieves direction determination through the interaction of the horizontal scale body, magnetic pointer, rotating shaft, and aiming device body. Simultaneously, it utilizes the interaction of a slide, sliding rod, slider, fixing plate, locking block, slot, fixing cylinder, second telescopic spring, and sliding rod to limit the rotating shaft, thereby braking the magnetic pointer. However, in this patent, braking and releasing the pointer requires operating a pull plate and sliding rod, which is a cumbersome process. In actual field geological surveys, geologists often need to frequently use geological compasses for measurements; this cumbersome operation reduces work efficiency and affects the geological survey process.

[0004] In summary, the cumbersome operation of braking and releasing the limit on the geological compass pointer in the existing technology seriously affects the efficiency of field geological surveys and restricts the application of geological compasses in complex field environments. Utility Model Content

[0005] The present invention aims to provide a geological compass for field geological surveys to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A geological compass for field geological surveys includes:

[0008] A bottom shell, one end of which is hinged to a cover plate, and a scale dial for mounting a scale is fixedly installed on the bottom shell. The cover plate selectively covers the top of the scale dial.

[0009] A rotating shaft passes through the dial and is rotatably connected to it perpendicularly, with a magnetic pointer fixedly connected to the upper end of the rotating shaft;

[0010] A brake rod slidably connected within the bottom housing along the radial direction of the rotation axis; and

[0011] The drive assembly connected to the brake lever can move between a first position and a second position by opening and closing the cover plate. In the first position, the brake lever intermittently engages with the rotating shaft. In the second position, one end of the brake lever makes frictional contact with the rotating shaft, and the rotating shaft is braked and limited.

[0012] Furthermore, a receiving cavity is provided inside the bottom shell, and a guide rod is fixedly connected inside the receiving cavity;

[0013] The drive assembly includes a slider located within the receiving cavity and slidably connected to the guide rod. The sliding direction of the slider and the guide rod is parallel to the axial direction of the rotation shaft. The slider is movably connected to the other end of the brake rod. The slider is movable between a first position and a second position.

[0014] Furthermore, the slider has an inclined surface on the side near the rotating shaft, the inclined surface is inclined from top to bottom in a direction away from the rotating shaft, and the inclined surface is movably connected to the other end of the brake rod.

[0015] Furthermore, the driving component also includes:

[0016] A downward pressure rod fixedly connected above the slider, the downward pressure rod being movably disposed through the upper surface of the bottom shell; and

[0017] The cover plate selectively contacts the rotating roller connected to the upper end of the lower pressure rod, thereby driving the slider to move between a first position and a second position.

[0018] In the first position, the upper end of the pressure rod protrudes from the upper surface of the bottom shell; in the second position, the pressure rod and the rotating roller are embedded in the bottom shell.

[0019] Furthermore, it also includes:

[0020] A fixing block is fixedly connected within the receiving cavity, and the brake rod is movably disposed through the fixing block;

[0021] A rotating wheel mounted at the other end of the brake lever, the rotating wheel being rolledly connected to an inclined surface; and

[0022] An elastic element is provided to drive the brake lever to move away from the rotation axis.

[0023] Furthermore, an end plate is fixedly connected to the other end of the brake lever, and the elastic element is a compression spring sleeved around the brake lever, with both ends of the compression spring connected to the end plate and the fixing block, respectively.

[0024] Furthermore, the outer wall of the brake lever is provided with a sliding groove, and the fixed block is provided with a sliding protrusion. Along the length direction of the brake lever, the sliding groove and the sliding protrusion are slidably connected.

[0025] Furthermore, a first friction plate is fixedly connected to the side wall of the rotating shaft;

[0026] One end of the brake lever is fixedly connected to a brake plate, which is arc-shaped. A second friction pad is provided on the concave surface of the arc-shaped brake plate and is positioned opposite to the first friction pad.

[0027] Furthermore, a support sleeve is fixedly provided on the upper end of the bottom surface of the bottom shell, and the lower end of the rotating shaft is rotatably connected to the support sleeve.

[0028] Furthermore, a hook is fixedly provided on the outer wall of the other end of the bottom shell, and a buckle is fixedly provided on the cover plate. The hook and the buckle are detachably connected, and a level bubble meter is provided on the upper surface of the dial.

[0029] Compared with the prior art, this utility model has at least the following advantages:

[0030] This invention, by designing a drive component linked to the cover plate, automatically brakes and releases the magnetic pointer while the cover plate is being closed and opened. This greatly simplifies the operation process; geologists only need to perform simple cover plate opening and closing operations to brake and release the magnetic pointer, significantly improving work efficiency and reducing time wastage and measurement errors caused by cumbersome operations. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the geological compass for field geological surveys according to this utility model;

[0033] Figure 2 This is a schematic diagram of the overall structure of the geological compass for field geological surveys of this utility model from another perspective;

[0034] Figure 3 This is a cross-sectional view of the geological compass used for field geological surveys according to this utility model;

[0035] Figure 4 This utility model Figure 3 A magnified view of a portion of region A in the middle.

[0036] Reference numerals: 1. Bottom shell; 2. Cover plate; 3. Dial; 4. Scale; 5. Rotating shaft; 6. Magnetic pointer; 7. Brake lever; 8. Guide rod; 9. Slider; 10. Pressing rod; 11. Rotating roller; 12. Fixing block; 13. Rotating wheel; 14. Elastic element; 15. End plate; 16. Sliding groove; 17. Sliding protrusion; 18. First friction plate; 19. Brake plate; 20. Support sleeve; 21. Buckle; 22. Hook; 23. Horizontal bubble meter. Detailed Implementation

[0037] 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.

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1-4 This utility model provides a geological compass for field geological surveys, which can effectively brake and release the magnetic pointer 6 while closing and unlocking the cover plate 2, thereby reducing additional operation.

[0040] Specifically, this utility model geological compass includes a base shell 1, a cover plate 2, a dial 3, a rotating shaft 5, a magnetic pointer 6, a brake lever 7, and a drive assembly. One end of the base shell 1 is hinged to the cover plate 2. The dial 3 is fixedly mounted on the base shell 1, and the dial 3 is marked with a scale 4 for indicating direction. The cover plate 2 can be selectively placed over the dial 3 as needed. The rotating shaft 5 passes through the dial 3 and is rotatably connected to it perpendicularly. The upper end of the rotating shaft 5 is fixedly connected to the magnetic pointer 6. The magnetic pointer 6 can drive the rotating shaft 5 to rotate under the influence of a magnetic field, indicating the direction of the geomagnetic field, thereby helping geological surveyors determine orientation. Above the magnetic pointer 6 and the dial 3, a protective film (not shown in the figure) is fixedly connected to the base shell 1. The protective film is made of transparent material and serves to protect the dial 3 and the magnetic pointer 6, preventing dust and debris from entering and affecting measurement accuracy. The brake lever 7 is slidably connected inside the base shell 1 along the radial direction of the rotating shaft 5. The function of the brake lever 7 is to cooperate with the rotating shaft 5 to brake and limit the rotation of the shaft 5, so that the magnetic pointer 6 can remain stationary when needed, facilitating accurate measurement and reading. The drive assembly is connected to the brake lever 7, and the drive assembly moves between a first position and a second position by opening and closing the cover plate 2. When the drive assembly is in the first position, the brake lever 7 is intermittently engaged with the rotating shaft 5, allowing the rotating shaft 5 to rotate freely; when the drive assembly is in the second position, one end of the brake lever 7 makes frictional contact with the rotating shaft 5, thereby braking and limiting the rotation of the rotating shaft 5, stopping the magnetic pointer 6 from rotating.

[0041] Preferably, the bottom shell 1 has a receiving cavity, and a guide rod 8 is fixedly connected inside the receiving cavity. The guide rod 8 is parallel to the axis of the rotating shaft 5. The function of the guide rod 8 is to provide sliding guidance for the slider 9, ensuring that the movement direction of the slider 9 is parallel to the axis of the rotating shaft 5, thereby ensuring the stable operation of the drive assembly.

[0042] The drive assembly includes a slider 9 located within a receiving cavity, which is slidably connected to a guide rod 8. An inclined surface is provided on the side of the slider 9 near the rotating shaft 5, tilting downwards towards the direction away from the rotating shaft 5. The other end of a brake rod 7 is movably connected to the inclined surface. When the slider 9 slides on the guide rod 8, due to the design of the inclined surface, the brake rod 7 moves accordingly in the radial direction, thereby braking or releasing the rotating shaft 5.

[0043] The drive assembly also includes a pressing rod 10 fixedly connected above the slider 9, the pressing rod 10 movably passing through the upper surface of the bottom shell 1. A rotating roller 11 is rotatably connected to the upper end of the pressing rod 10. The cover plate 2 selectively contacts the rotating roller 11. When the cover plate 2 is closed, the rotating roller 11 contacts the cover plate 2 and is subjected to pressure, causing the slider 9 to move downwards to a second position; when the cover plate 2 is open, the rotating roller 11 loses pressure, and the slider 9 moves upwards to a first position under the action of the elastic element 14. In the first position, the upper end of the pressing rod 10 protrudes from the upper surface of the bottom shell 1; in the second position, the pressing rod 10 and the rotating roller 11 are embedded within the bottom shell 1.

[0044] A fixing block 12 is fixedly connected inside the receiving cavity of the bottom shell 1, and the brake rod 7 is movably connected through the fixing block 12. A rotating wheel 13 is installed at the other end of the brake rod 7, and the rotating wheel 13 is rolledly connected to the inclined surface of the slider 9. This rolling connection reduces friction and makes the movement of the brake rod 7 smoother. In addition, an elastic element 14 is included, which is used to drive the brake rod 7 to move away from the rotating shaft 5. In this embodiment, the elastic element 14 is a compression spring sleeved around the brake rod 7, and the two ends of the compression spring are respectively connected to the end plate 15 at the other end of the brake rod 7 and the fixing block 12. When the cover plate 2 is closed, the compression spring is compressed and stores elastic potential energy; when the cover plate 2 is opened, the compression spring releases the elastic potential energy, pushes the brake rod 7 to reset, and at the same time drives the slider 9 to move upward to the first position.

[0045] The outer wall of the brake lever 7 is provided with a sliding groove 16, and the fixed block 12 is provided with a sliding protrusion 17. Along the length of the brake lever 7, the sliding groove 16 and the sliding protrusion 17 are slidably connected. This structural design can ensure that the brake lever 7 remains stable during movement, preventing it from deviating or shaking, thereby improving the reliability and accuracy of braking.

[0046] A first friction plate 18 is fixedly connected to the side wall of the rotating shaft 5, and a brake plate 19 is fixedly connected to one end of the brake lever 7. The brake plate 19 is arc-shaped, and a second friction plate (not shown in the figure) is provided on its arc-shaped concave surface, with the second friction plate facing the first friction plate 18. When the brake lever 7 comes into frictional contact with the rotating shaft 5, the first friction plate 18 and the second friction plate interact to generate sufficient frictional force, causing the rotating shaft 5 to stop rotating, thereby achieving the braking and limiting of the magnetic pointer 6.

[0047] This design, through ingenious structural design, enables convenient braking and de-braking of the magnetic pointer 6. The braking and limiting of the rotating shaft 5 can be achieved simply by opening and closing the cover plate 2, making operation convenient and quick, and improving the efficiency and measurement accuracy of field geological surveys. Furthermore, this geological compass has a stable and reliable structure, can adapt to complex field environments, provides accurate orientation information for geological surveyors, and has promising application prospects.

[0048] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A geological compass for field geological surveys, characterized in that, include: A bottom shell (1) is hinged to a cover plate (2) at one end. A scale plate (3) for mounting a scale (4) is fixedly installed on the bottom shell (1). The cover plate (2) selectively covers the top of the scale plate (3). A rotating shaft (5) passes through the dial (3) and is rotatably connected to it, and a magnetic pointer (6) is fixedly connected to the upper end of the rotating shaft (5); A brake rod (7) slidably connected within the bottom shell (1) along the radial direction of the rotation axis (5); and The drive assembly connected to the brake lever (7) can move between a first position and a second position by opening and closing the cover plate (2). In the first position, the brake lever (7) is intermittently engaged with the rotating shaft (5). In the second position, one end of the brake lever (7) is in frictional contact with the rotating shaft (5), and the rotating shaft (5) is braked and limited.

2. The geological compass for field geological surveys according to claim 1, characterized in that, The bottom shell (1) is provided with a receiving cavity, and a guide rod (8) is fixedly connected inside the receiving cavity; The drive assembly includes a slider (9) located within the receiving cavity and slidably connected to the guide rod (8). The sliding direction of the slider (9) and the guide rod (8) is parallel to the axial direction of the rotating shaft (5). The other end of the slider (9) is movably connected to the brake rod (7). The slider (9) is movable between a first position and a second position.

3. The geological compass for field geological surveys according to claim 2, characterized in that, The slider (9) has an inclined surface on the side near the rotating shaft (5). The inclined surface is inclined from top to bottom in a direction away from the rotating shaft (5). The inclined surface is movably connected to the other end of the brake rod (7).

4. The geological compass for field geological surveys according to claim 3, characterized in that, The driving component also includes: A downward pressure rod (10) is fixedly connected above the slider (9), and the downward pressure rod (10) is movably disposed through the upper surface of the bottom shell (1); and Rotary roller (11) connected to the upper end of the lower pressure rod (10) is rotated, and cover plate (2) selectively contacts the rotating roller (11) to drive slider (9) to move between a first position and a second position; In the first position, the upper end of the pressure rod (10) protrudes from the upper surface of the bottom shell (1), and in the second position, the pressure rod (10) and the rotating roller (11) are embedded in the bottom shell (1).

5. The geological compass for field geological surveys according to claim 4, characterized in that, Also includes: A fixing block (12) is fixedly connected inside the receiving cavity, and the brake rod (7) is movably disposed through the fixing block (12); A rotating wheel (13) is mounted on the other end of the brake lever (7), the rotating wheel (13) being rolledly connected to the inclined surface; and An elastic element (14) is used to drive the brake lever (7) to move away from the rotation axis (5).

6. The geological compass for field geological surveys according to claim 5, characterized in that, The other end of the brake lever (7) is fixedly connected to an end plate (15), and the elastic element (14) is a compression spring sleeved around the brake lever (7). The two ends of the compression spring are respectively connected to the end plate (15) and the fixing block (12).

7. The geological compass for field geological surveys according to claim 6, characterized in that, The brake lever (7) has a sliding groove (16) on its outer side wall and a sliding protrusion (17) in the fixing block (12). The sliding groove (16) and the sliding protrusion (17) are slidably connected along the length of the brake lever (7).

8. The geological compass for field geological surveys according to claim 7, characterized in that, The first friction plate (18) is fixedly connected to the side wall of the rotating shaft (5); One end of the brake lever (7) is fixedly connected to a brake plate (19). The brake plate (19) is arc-shaped, and a second friction plate is provided on the arc-shaped concave surface of the brake plate (19), which is arranged opposite to the first friction plate (18).

9. The geological compass for field geological surveys according to claim 8, characterized in that, A support sleeve (20) is fixedly provided on the upper end of the bottom surface of the bottom shell (1), and the lower end of the rotating shaft (5) is rotatably connected to the support sleeve (20).

10. The geological compass for field geological surveys according to any one of claims 1 to 9, characterized in that, A hook (22) is fixedly provided on the outer side wall of the other end of the bottom shell (1), and a buckle (21) is fixedly provided on the cover plate (2). The hook (22) and the buckle (21) are detachably connected, and a horizontal bubble meter (23) is provided on the upper surface of the dial (3).

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