Geological compass capable of adjusting balance

Abstract

The invention relates to the technical field of compass, in particular to a balance-adjustable geological compass which comprises a compass body, a dial and a magnetic needle are arranged in the compass body, the dial is marked with a direction, a glass cover is arranged at the top of the compass body, a protection mechanism is arranged at one end of the compass body, and the magnetic needle is arranged at the other end of the compass body. The protection mechanism comprises a supporting block fixedly arranged outside the compass, the interior of the supporting block is rotationally connected with an instrument cover through a damping rotating shaft, a reflective mirror and a rotating bolt are installed in the instrument cover, and due to the fact that threads are matched with the bolt, the bolt can descend in a hollow column when rotating, and the reflective mirror is fixed to the interior of the hollow column. The adjusting position is supported through the bolt, then the handle is pulled to enable the piston to slide and rise in the vertical groove through the piston rod, and the suction cup is communicated with the vertical groove, so that the piston rises to extract gas in the vertical groove, and the operation is beneficial for fixing the piston on the ground and preventing the compass from losing balance when outdoor wind blows.

Description

Technical Field

[0001] The invention relates to the technical field of compasses, and in particular to a geological compass with adjustable balance. Background Art

[0002] A geological compass is an instrument that uses a magnetic needle to determine the direction. It is used to measure the magnetic azimuth or magnetic quadrant angle of a straight line on the ground. The compass consists of a shell, an aiming device, and a magnetic needle. It has a simple structure and is easy to use. It is often used to determine the approximate starting direction of an independent survey area, as well as for measurement work in route surveys, geological surveys, and forest surveys.

[0003] After searching, the utility model patent with patent number CN221198466U proposes "a convenient compass". The convenient compass can be fixed between the two groups of clamping rings by controlling the two groups of clamping rings to be put on the arms of the staff, and then controlling the limit rod to be inserted into the inside of the limit hole. Thus, the device can be fixed on the arms of the staff, and the staff does not need to hold the device or put it in the pocket to carry it, freeing the hands of the staff and not affecting the work. At the same time, it also prevents the loss of the device, greatly improving the convenience of the device; However, the compass has the following problems: due to the special use environment of the geological compass, it is easy to collide with rocks if used improperly, causing damage to the internal components of the geological compass, thus affecting its use. The geological compass does not have relevant buffering and shock-absorbing protection devices, which increases the probability of damage to the geological compass.

[0004] After searching, the utility model patent with patent number CN219914455U proposes: "A geological compass", the adjustable reflector of the compass is installed on the mounting rod, the mounting rod is rotatably connected to the second rod, the second rod is connected to the first rod, the first rod is fixed to the chassis, the adjustable reflector can be rotatably connected to the chassis, the adjustable reflector is rotated to a suitable angle, and the level in the chassis can be observed through the adjustable reflector; However, the compass has the following problems: the geological compass is not always used on flat ground and sometimes needs to be placed on an uneven surface such as rock. The usual way to adjust the balance is through a circular level. However, after the compass completes the balance adjustment, the adjusted position cannot be supported, resulting in the compass being unable to maintain balance continuously, affecting the accuracy of the measurement. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the geological compass in the background technology is not always used on flat ground, and sometimes needs to be placed on an uneven surface such as rock. The usual balance adjustment method is to use a circular level, but after the compass completes the balance adjustment, the adjusted position cannot be supported, resulting in the compass being unable to maintain balance continuously, affecting the accuracy of the measurement. A geological compass with adjustable balance is proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a geological compass with adjustable balance, comprising: a compass, wherein a dial and a magnetic needle are arranged inside the compass, and a direction is marked on the dial, a glass cover is arranged on the top of the compass, a protection mechanism is arranged at one end of the compass, the protection mechanism comprises a support block fixedly arranged outside the compass, an instrument cover is rotatably connected to the inside of the support block through a damping shaft, a reflector is installed inside the instrument cover, the compass is provided with a balance adjustment mechanism, the balance adjustment mechanism comprises four support pads fixedly arranged on the outer wall of the compass, wherein first hollow boxes are fixed inside two of the support pads, a circular level is installed on the first hollow box, a hollow column is fixed at the bottom of the support pad, a thread is arranged on the inner wall of the hollow column, a bolt is rotatably connected to the inside of the hollow column through the thread, a vertical groove is arranged inside the bolt, a suction cup is connected to the bottom of the vertical groove, a piston is arranged inside the suction cup, a piston rod is fixed to the top of the piston, and a handle is arranged on the top of the piston rod.

[0007] As a further solution of the present invention, a hollow groove is provided at the bottom of the compass, and a shock-absorbing protection mechanism is provided inside the groove. The shock-absorbing protection mechanism includes a second hollow box, and the inner wall of the hollow groove is slidably connected with a pad in the vertical direction, and a first shock-absorbing spring is fixed on the top of the pad and the top of the shock-absorbing spring is fixedly connected to the bottom of the second hollow box. The second hollow box is provided with a notch, and the interior of the second hollow box is slidably connected with a movable plate in the horizontal direction, and a vertical plate is fixed inside the second hollow box, one end of the vertical plate is fixed with a second shock-absorbing spring, and one end of the second shock-absorbing spring is fixedly connected to the movable plate, and the top of the pad is rotatably connected with a connecting rod, and the connecting rod passes through the notch and is rotatably connected to the movable plate.

[0008] As a further solution of the present invention, an elastic first air cushion is fixed inside the second hollow box, and a horizontal plate is slidably connected in the vertical direction. The horizontal plate is located at the bottom of the elastic first air cushion, and a vertical rod is fixed to the bottom of the horizontal plate.

[0009] As a further solution of the present invention, a dustproof mechanism is provided inside the first hollow box, an airbag that expands rapidly after inflation is provided on the outer wall of the compass, a circular groove that cooperates with the airbag is provided on the inner wall of the instrument cover, a second air cushion is fixed inside the first hollow box, a return spring is provided inside the second air cushion, a slide groove is provided on the inner wall of the first hollow box, a slider is slidably connected inside the slide groove, a pressure plate is fixed to the outer wall of the slider, the second air cushion is connected to an air pipe, and the top of the air pipe is connected to the airbag.

[0010] As a further solution of the present invention, the first hollow box is rotatably connected with a movable shaft, a clamp is fixed to the outside of the movable shaft, the clamp cooperates with the instrument cover, and a pressure block is fixed to the outside of the movable shaft.

[0011] As a further solution of the present invention, the compass is provided with a closing mechanism, which includes a hollow bar inside the compass, a first gear is fixed to one end of the damping shaft, and the first gear is located inside the hollow bar, a first rack and a second rack are slidably connected inside the hollow bar, a second gear is rotatably connected inside the hollow bar between the first rack and the second rack, and the first gear is located at the top of the first rack and meshes with the first rack.

[0012] As a further solution of the present invention, one end of the movable shaft extends to the inside of the hollow bar, and teeth are arranged outside the one end of the movable shaft, and the teeth are located at the top of the second rack and mesh with the second rack.

[0013] The invention provides a geological compass with adjustable balance, which has the following beneficial effects: 1. Turn the bolt through the setting adjustment mechanism. Since the thread and the bolt cooperate with each other, when the bolt is turned, it will drop inside the hollow column, and the adjustment position is supported by the bolt. Then pull the handle through the piston rod to make the piston slide and rise in the vertical groove. Since the suction cup is connected to the vertical groove, the piston rises to extract the gas in the vertical groove. This operation is conducive to fixing the piston on the ground to prevent the compass from losing balance when the outdoor wind blows. By adjusting the length of the four bolts, the bubble of the circular level is located at the center of the circle. At this time, it means that the compass is in a balanced state, thereby realizing the adjustable balance of the compass.

[0014] 2. The damage to the compass is reduced by the provided shock-absorbing protection mechanism. When the compass falls, the pad in the hollow groove is hit by the protruding part of the rock, and then the pad slides in the hollow groove and compresses the first shock-absorbing spring, and part of the vibration is reduced by the shock-absorbing spring. Then, when the pad slides, the connecting rod rotates in the groove, and the two connecting rods rotate in opposite directions and move the movable plate in opposite directions. Then the movable plate compresses the second shock-absorbing spring, and further shock absorption is achieved by the compression and reset of the second shock-absorbing spring. At the same time, when the pad slides, it hits the vertical rod, and the vertical rod moves and moves the horizontal plate to compress the first air cushion. The elastic reset of the first air cushion reduces the vibration again. The above operations play a role in shock absorption and protection of the compass.

[0015] 3. Through the provided closing mechanism, the instrument cover is pressed when closing the cover, and then the damping shaft rotates counterclockwise with the first gear, and when the first gear rotates, it drives the first rack to move inside the hollow bar, and when the first rack rotates, it drives the second rack to move through the second gear, and the first rack and the second rack move in opposite directions, and the second rack moves toward the direction of the first hollow box and drives the movable shaft to rotate under the action of the teeth, and then when the movable shaft rotates, it drives the clamp to rotate to clamp the instrument cover, and the clamp is used to achieve firmness when closing the cover, so as to prevent the instrument cover from opening when falling and causing the internal glass cover to break, which plays a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance and structure of the compass proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the compass proposed by the present invention after it is opened; Figure 3 The present invention proposes Figure 2 Split graph; Figure 4 This is a schematic diagram of the internal structure of the hollow bar proposed by the present invention; Figure 5 The present invention proposes Figure 3 Schematic diagram of local connection structure; Figure 6 The present invention proposes Figure 5 Schematic diagram of local structure; Figure 7 This is a schematic diagram of the planar structure of the compass proposed by the present invention; Figure 8 The present invention proposes Figure 7 Schematic diagram of local structure; Fig. 9 This is a schematic diagram of the structure of the regulating mechanism proposed in the present invention.

[0017] In the figure: 1, compass; 2, protection mechanism; 201, support block; 202, damping shaft; 203, instrument cover; 3, adjustment mechanism; 301, support pad; 302, first hollow box; 303, circular level; 304, hollow column; 305, thread; 306, bolt; 307, vertical groove; 308, suction cup; 309, piston; 310, piston rod; 311, handle; 4, shock-absorbing protection mechanism; 401, second hollow box; 402, pad; 403, first shock-absorbing spring; 404, notch; 405, movable plate; 406, vertical plate; 4 07. Second shock-absorbing spring; 408. Connecting rod; 409. First air cushion; 410. Horizontal plate; 411. Vertical rod; 5. Dust-proof mechanism; 501. Air bag; 502. Circular groove; 503. Second air cushion; 504. Return spring; 505. Slide groove; 506. Sliding block; 507. Pressing plate; 508. Air pipe; 509. Movable shaft; 510. Clamp; 511. Pressing block; 6. Closing mechanism; 601. Hollow bar; 602. First gear; 603. First rack; 604. Second rack; 605. Teeth; 606. Second gear; 11. Hollow groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of its embodiments based on the overall structure of the present invention.

[0020] Please pay attention to Figure 1 and Fig. 9 A geological compass with adjustable balance comprises: a compass 1, wherein a dial and a magnetic needle are arranged inside the compass 1, and a direction is marked on the dial, a glass cover is arranged on the top of the compass 1, a protection mechanism 2 is arranged at one end of the compass 1, the protection mechanism 2 comprises a support block 201 fixedly arranged outside the compass 1, an instrument cover 203 is rotatably connected to the inside of the support block 201 through a damping shaft 202, a reflector is installed inside the instrument cover 203, the compass 1 is provided with a balance adjustment mechanism 3, the balance adjustment mechanism 3 comprises four support pads 301 fixedly arranged on the outer wall of the compass 1, and the balance adjustment mechanism 3 comprises four support pads 301 fixedly arranged on the outer wall of the compass 1, A first hollow box 302 is fixed inside the two support pads 301, and a circular level 303 is installed on the first hollow box 302. A hollow column 304 is fixed to the bottom of the support pad 301, and a thread 305 is provided on the inner wall of the hollow column 304. A bolt 306 is rotatably connected to the inside of the hollow column 304 through the thread 305. A vertical groove 307 is provided inside the bolt 306, and a suction cup 308 is connected to the bottom of the vertical groove 307. A piston 309 is provided inside the suction cup 308, and a piston rod 310 is fixed to the top of the piston 309, and a handle 311 is provided on the top of the piston rod 310.

[0021] It can be concluded that the balance of the compass 1 can be adjusted and maintained by the provided adjustment mechanism 3. The bolt 306 is turned. Since the thread 305 cooperates with the bolt 306, the bolt 306 will drop inside the hollow column 304 when it is turned. Then the handle 311 is pulled to slide and rise the piston 309 in the vertical groove 307 through the piston rod 310. Since the suction cup 308 is connected to the vertical groove 307, the piston 309 rises to extract the gas in the vertical groove 307. This operation is conducive to fixing the piston 309 on the ground to prevent the compass 1 from losing balance when the outdoor wind blows. By adjusting the extended length of the four bolts 306, the bubble of the circular level 303 is located at the center of the circle. At this time, it means that the compass 1 is already in a balanced state, thereby realizing the adjustable balance of the compass 1.

[0022] Please pay attention to Figure 7 and Figure 8The bottom of the compass 1 is provided with a hollow groove 11, and a shock-absorbing protection mechanism 4 is provided inside the hollow groove 11. The shock-absorbing protection mechanism 4 includes a second hollow box 401, and the inner wall of the hollow groove 11 is slidably connected with a pad 402 in the vertical direction, and a first shock-absorbing spring 403 is fixed on the top of the pad 402, and the top of the first shock-absorbing spring 403 is fixedly connected to the bottom of the second hollow box 401, and the second hollow box 401 is provided with a notch 404, and the interior of the second hollow box 401 is slidably connected with a movable plate 405 in the horizontal direction, and the second hollow box A vertical plate 406 is fixed inside 401, and a second shock-absorbing spring 407 is fixed at one end of the vertical plate 406, and one end of the second shock-absorbing spring 407 is fixedly connected to the movable plate 405. A connecting rod 408 is rotatably connected to the top of the pad 402, and the connecting rod 408 passes through the slot 404 and is rotatably connected to the movable plate 405. An elastic first air cushion 409 is fixed inside the second hollow box 401, and a horizontal plate 410 is slidably connected in the vertical direction. The horizontal plate 410 is located at the bottom of the elastic first air cushion 409, and a vertical rod 411 is fixed to the bottom of the horizontal plate 410.

[0023] It should be noted that, when the compass 1 falls from the hand due to accident, the damage to the compass 1 is reduced by the provided shock-absorbing protection mechanism 4. When falling, the pad 402 in the hollow groove 11 is hit by the protruding part of the rock, and then the pad 402 slides in the hollow groove 11 and compresses the first shock-absorbing spring 403, and part of the vibration is reduced by the first shock-absorbing spring 403. Then, when the pad 402 slides, the connecting rod 408 rotates in the slot 404, and the two connecting rods 408 rotate in the opposite direction and move the movable plate 405 in the opposite direction. Then the movable plate 405 compresses the second shock-absorbing spring 407, and further shock absorption is achieved by the compression and reset of the second shock-absorbing spring 407. At the same time, when the pad 402 slides, it hits the vertical rod 411, and the vertical rod 411 moves and moves with the horizontal plate 410 to compress the first air cushion 409. The elastic reset of the first air cushion 409 reduces the vibration again. The above operation plays a role in shock absorption and protection of the compass 1.

[0024] Please pay attention to Figure 2 and Figure 6, a dustproof mechanism 5 is arranged inside the first hollow box 302, an airbag 501 which expands rapidly after being inflated is arranged on the outer wall of the compass 1, a circular groove 502 which cooperates with the airbag 501 is arranged on the inner wall of the instrument cover 203, a second air cushion 503 is fixed inside the first hollow box 302, a return spring 504 is arranged inside the second air cushion 503, a slide groove 505 is arranged on the inner wall of the first hollow box 302, a slider 506 is slidably connected inside the slide groove 505, a pressure plate 507 is fixed on the outer wall of the slider 506, an air pipe 508 is connected to the second air cushion 503, and the top of the air pipe 508 is connected to the airbag 501, a movable shaft 509 is rotatably connected to the first hollow box 302, a clamp 510 is fixed to the outside of the movable shaft 509, the clamp 510 cooperates with the instrument cover 203, and a pressure block 511 is fixed to the outside of the movable shaft 509.

[0025] Specifically, when the movable shaft 509 rotates, it drives the pressure block 511 to rotate. When the pressure block 511 rotates, it compresses the pressure plate 507. Then the slider 506 slides downward in the slide groove 505 and drives the pressure plate 507 to descend. When the pressure plate 507 descends, it compresses the second air cushion 503. The reset spring 504 is provided to facilitate improving the reset effect of the second air cushion 503 after being compressed. After the second air cushion 503 is compressed, the air inside it enters the interior of the airbag 501 from the air pipe 508. Then, after the airbag 501 is inflated, it expands rapidly and enters the interior of the circular groove 502, which is beneficial to fill the gap when the instrument cover 203 and the compass 1 are closed, so as to prevent dust or moisture from entering and affecting the service life of the compass 1.

[0026] Please pay attention to Figure 3 , Figure 4 and Figure 5 The compass 1 is provided with a closing mechanism 6, and the closing mechanism 6 includes a hollow bar 601 inside the compass 1, a first gear 602 is fixed to one end of the damping shaft 202, and the first gear 602 is located inside the hollow bar 601, a first rack 603 and a second rack 604 are slidably connected inside the hollow bar 601, and a second gear 606 is rotatably connected between the first rack 603 and the second rack 604 inside the hollow bar 601, the first gear 602 is located at the top of the first rack 603 and meshes with the first rack 603, one end of the movable shaft 509 extends to the inside of the hollow bar 601, and teeth 605 are provided on the outside of one end of the movable shaft 509, and the teeth 605 are located at the top of the second rack 604 and meshes with the second rack 604.

[0027] It can be concluded that when closing the cover, press the instrument cover 203, and then the damping shaft 202 rotates counterclockwise with the first gear 602. When the first gear 602 rotates, it drives the first rack 603 to move inside the hollow bar 601. When the first rack 603 rotates, it drives the second rack 604 to move through the second gear 606. The first rack 603 and the second rack 604 move in opposite directions. The second rack 604 moves toward the direction of the first hollow box 302 and drives the movable shaft 509 to rotate under the action of the teeth 605. Then, when the movable shaft 509 rotates, it drives the clamp 510 to rotate and clamp the instrument cover 203. The clamp 510 ensures the firmness when closing the cover, and prevents the instrument cover 203 from opening when it falls, which causes the internal glass cover to break, and plays a protective role.

[0028] Working principle: The compass 1 is provided with a dial and a magnetic needle inside, and the direction is marked on the dial. When the compass 1 is placed on an uneven ground or rock for measurement, the adjustment mechanism 3 can be used to adjust and maintain the balance of the compass 1. The bolt 306 is turned. Since the thread 305 and the bolt 306 cooperate with each other, when the bolt 306 is turned, it will drop inside the hollow column 304. Then, the handle 311 is pulled to slide and raise the piston 309 in the vertical groove 307 through the piston rod 310. Since the suction cup 308 is connected to the vertical groove 307, the piston 309 is raised to extract the gas in the vertical groove 307. This operation is conducive to fixing the piston 309. The compass 1 is fixed on the ground to prevent the compass 1 from losing balance when the outdoor wind blows. The bubble of the circular level 303 is located at the center of the circle by adjusting the length of the four bolts 306. At this time, it means that the compass 1 is in a balanced state, thereby realizing the adjustable balance of the compass 1. When the compass 1 falls from the hand due to accident, the damage to the compass 1 is reduced by the provided shock-absorbing protection mechanism 4. When it falls, the pad 402 in the hollow groove 11 is hit by the protruding part of the rock, and then the pad 402 slides in the hollow groove 11 and compresses the first shock-absorbing spring 403, and part of the vibration is reduced by the first shock-absorbing spring 403. Then, when the pad 402 slides, the connecting rod 408 is in the groove The opening 404 rotates, the two connecting rods 408 rotate in the opposite direction and move the movable plate 405 in the opposite direction, and then the movable plate 405 compresses the second shock-absorbing spring 407, and further shock absorption is achieved through the compression and reset of the second shock-absorbing spring 407. At the same time, when the pad 402 slides, it hits the vertical rod 411, and the vertical rod 411 moves and moves with the horizontal plate 410 to compress the first air cushion 409, and the elastic reset of the first air cushion 409 reduces the vibration again. The above operation plays a role in shock absorption and protection of the compass 1. The closing mechanism 6 is arranged to facilitate closing the instrument cover 203. When closing the cover, the instrument cover 203 is pressed, and then the damping shaft 202 drives the first gear 602 to rotate in the opposite direction. When the needle rotates, the first gear 602 rotates and drives the first rack 603 to move inside the hollow bar 601. When the first rack 603 rotates, it drives the second rack 604 to move through the second gear 606. The first rack 603 and the second rack 604 move in opposite directions. The second rack 604 moves toward the direction of the first hollow box 302 and drives the movable shaft 509 to rotate under the action of the teeth 605. Then, when the movable shaft 509 rotates, it drives the clamp 510 to rotate to clamp the instrument cover 203. The clamp 510 is used to ensure the firmness of the cover when it is closed, so as to prevent the instrument cover 203 from opening when it falls and causing the internal glass cover to break. The compass 1 after the cover is closed is as shown in FIG. Figure 1As shown, at the same time, the dust-proof mechanism 5 and the cover-closing mechanism 6 realize a linkage combination mechanism, and the dust-proof mechanism 5 is driven to work by the counterclockwise rotation force of the instrument cover 203. When the movable shaft 509 rotates, it drives the pressure block 511 to rotate. When the pressure block 511 rotates, it presses the pressure plate 507, and then the slider 506 slides downward in the slide groove 505 and drives the pressure plate 507 to descend. When the pressure plate 507 descends, it presses the second air cushion 503. The reset spring 504 is provided to improve the reset effect of the second air cushion 503 after being compressed. After the second air cushion 503 is compressed, the air inside it enters the air cushion from the air pipe 508. The airbag 501 is then inflated and rapidly expands into the circular groove 502, which helps to fill the gap between the instrument cover 203 and the compass 1 when they are closed, preventing dust or moisture from entering and affecting the service life of the compass 1. When the compass 1 needs to be used, the clamp 510 is moved, and then the reset spring 504 brings the second air cushion 503 to reset and rise, and brings the pressure plate 507 to push the pressure block 511 to make the movable shaft 509 rotate counterclockwise. When the movable shaft 509 rotates counterclockwise, with the cooperation of the closing mechanism 6, the damping shaft 202 will rotate clockwise to automatically open the instrument cover 203.

[0029] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A geological compass with adjustable balance, comprising: A compass (1), characterized in that: a scale plate and a magnetic needle are arranged inside the compass (1), and a direction is marked on the scale plate; a glass cover is arranged on the top of the compass (1); a protective mechanism (2) is arranged at one end of the compass (1); the protective mechanism (2) comprises a support block (201) fixedly arranged outside the compass (1); an instrument cover (203) is rotatably connected to the inside of the support block (201) via a damping shaft (202); a reflector is installed inside the instrument cover (203); the compass (1) is provided with A balance adjustment mechanism (3) is provided, the balance adjustment mechanism (3) comprising four support pads (301) fixedly arranged on the outer wall of a compass (1), wherein first hollow boxes (302) are fixedly arranged inside two of the support pads (301), a circular level (303) is installed on the first hollow box (302), a hollow column (304) is fixedly arranged at the bottom of the support pads (301), a thread (305) is arranged on the inner wall of the hollow column (304), and a bolt (306) is rotatably connected to the inside of the hollow column (304) via the thread (305).

2. The geological compass with adjustable balance according to claim 1, characterized in that: A vertical groove (307) is provided inside the bolt (306), a suction cup (308) is connected to the bottom of the vertical groove (307), a piston (309) is provided inside the suction cup (308), a piston rod (310) is fixed to the top of the piston (309), and a handle (311) is provided on the top of the piston rod (310).

3. The geological compass with adjustable balance according to claim 1, characterized in that: The bottom of the compass (1) is provided with a hollow groove (11), the interior of the hollow groove (11) is provided with a shock absorbing protection mechanism (4), the shock absorbing protection mechanism (4) comprises a second hollow box (401), the inner wall of the hollow groove (11) is slidably connected to a pad (402) in a vertical direction, a first shock absorbing spring (403) is fixed to the top of the pad (402), and the top of the first shock absorbing spring (403) is fixedly connected to the bottom of the second hollow box (401), and the second hollow box (401) is provided with a notch ( 404), a movable plate (405) is slidably connected to the interior of the second hollow box (401) in the horizontal direction, and a vertical plate (406) is fixed to the interior of the second hollow box (401), a second shock-absorbing spring (407) is fixed to one end of the vertical plate (406), and one end of the second shock-absorbing spring (407) is fixedly connected to the movable plate (405), and a connecting rod (408) is rotatably connected to the top of the pad (402), and the connecting rod (408) passes through the notch (404) and is rotatably connected to the movable plate (405).

4. The geological compass with adjustable balance according to claim 3, characterized in that: An elastic first air cushion (409) is fixed inside the second hollow box (401), and a horizontal plate (410) is slidably connected in a vertical direction. The horizontal plate (410) is located at the bottom of the elastic first air cushion (409), and a vertical rod (411) is fixed at the bottom of the horizontal plate (410).

5. The geological compass with adjustable balance according to claim 1, characterized in that: A dustproof mechanism (5) is arranged inside the first hollow box (302); an air bag (501) that expands rapidly after being inflated is arranged on the outer wall of the compass (1); a circular groove (502) that cooperates with the air bag (501) is arranged on the inner wall of the instrument cover (203); a second air cushion (503) is fixed inside the first hollow box (302); a return spring (504) is arranged inside the second air cushion (503); a sliding groove (505) is arranged on the inner wall of the first hollow box (302); a slider (506) is slidably connected inside the sliding groove (505); a pressure plate (507) is fixed to the outer wall of the slider (506).

6. The geological compass with adjustable balance according to claim 5, characterized in that: The second air cushion (503) is connected to an air tube (508), and the top of the air tube (508) is connected to the air bag (501).

7. The geological compass with adjustable balance according to claim 1, characterized in that: The first hollow box (302) is rotatably connected to a movable shaft (509), a clamp (510) is fixed to the outside of the movable shaft (509), the clamp (510) cooperates with the instrument cover (203), and a pressure block (511) is fixed to the outside of the movable shaft (509).

8. The geological compass with adjustable balance according to claim 1, characterized in that: The compass (1) is provided with a cover closing mechanism (6), the cover closing mechanism (6) comprising a hollow bar (601) inside the compass (1), a first gear (602) being fixed to one end of the damping shaft (202), and the first gear (602) being located inside the hollow bar (601), a first rack (603) and a second rack (604) being slidably connected inside the hollow bar (601), and a second gear (606) being rotatably connected inside the hollow bar (601) and being located between the first rack (603) and the second rack (604).

9. The geological compass with adjustable balance according to claim 7, characterized in that: One end of the movable shaft (509) extends to the inside of the hollow bar (601), and teeth (605) are arranged outside one end of the movable shaft (509), and the teeth (605) are located at the top of the second rack (604) and mesh with the second rack (604).

10. The geological compass with adjustable balance according to claim 8, characterized in that: The top and inner sides of the first rack (603) and the second rack (604) are both provided with teeth, and the first gear (602) is located at the top of the first rack (603) and meshes with the first rack (603).

Images