Level gauge for geophysical exploration and use method thereof

Abstract

The invention belongs to the technical field of geological exploration equipment, and particularly relates to a level gauge for geophysical exploration and a use method thereof.By arranging a deformation protection mechanism, the positions of two protective jackets are changed under two working states of a level gauge body, and when the protective jackets and a mounting base are folded, a closed space is formed, so that the protective jackets are fixed to the mounting base; when the level gauge body works, the protective sleeve and the installation base are located on the upper side and the lower side of the level gauge body respectively, so that a worker can operate the level gauge body conveniently, and meanwhile the protective sleeve located on the upper side of the level gauge body is not prone to falling off. Foreign matter falling off from the sky can be intercepted, and in the process that the level gauge body and the support topple together, the probability that the level gauge body makes direct contact with the ground can be reduced due to the existence of the protective sleeve, and the probability that the level gauge body is damaged is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of geological prospecting equipment, in particular to a level instrument for geophysical prospecting and a use method thereof. Background Art

[0002] The level is one of the commonly used instruments in the field of geophysical exploration. It can accurately measure the height difference of objects on the ground or underground and provide important data support for geological exploration.

[0003] Since the level is a high-precision instrument, it needs to be accurately calibrated and maintained during use to ensure the accuracy and reliability of its measurement results. When used for a long time, the level is very likely to cause a decrease in measurement accuracy and damage to components due to collisions and bumps. In severe cases, it may even cause the level to be scrapped. The high cost of the level makes the cost of repairing or replacing the level extremely high after damage, which brings a large economic burden to geophysical exploration. In order to reduce the probability of accidental damage to the level, it is very important to improve the protection effect of the level. Usually, when protecting the level, protective boxes, sets and other components are used to cover the level. By isolating the level from the outside world, most external factors can be used to avoid damage to the level. During use, the level is fixed on a bracket or other mechanism to reduce the probability of accidental falling, collision, and bumping. However, it is in the process of taking the level out of the protective box and installing it on the bracket that the probability of accidents is higher.

[0004] The related technology discloses an adjustable level for forestry survey, with application number CN2024113142339. In this scheme, the level body is protected by a box body and a box cover. With the cooperation of the bracket and the cover opening pin assembly, the box body can be directly installed on the bracket, providing reliable protection conditions for the safe installation of the level body, and after installation and fixation, the box cover can be automatically opened, providing convenience for the use of the level body. However, in actual application, it is found that, on the one hand, due to the overly complicated structure of the box body and the box body, the weight of the box body and the level instrument is too large after being combined, which makes it inconvenient to carry and install the level instrument. On the other hand, the box body always covers the level instrument, and the narrow space in the box body is not conducive to the adjustment and operation of the level instrument.

[0005] In view of this, the present invention proposes a level instrument for geophysical exploration and a method of using the same, so as to solve the above technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a level for geophysical exploration and a method for using the same.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a level for geophysical exploration according to the present invention comprises a level body and a deformation protection mechanism installed on the level body;

[0008] The deformation protection mechanism is used to provide a cover-type protection for the level body, and the deformation protection mechanism includes:

[0009] A sleeve ring, which is sleeved and mounted on the level body and is made of elastic rubber material;

[0010] A mounting seat, the mounting seat is fixedly mounted below the collar, a mounting slot is provided on the mounting seat, and the level body is connected to an external bracket through the mounting slot;

[0011] A sheath, the sheath is symmetrically hinged on both sides of the collar, and the sheath cooperates with the mounting seat to cover the level body;

[0012] A compression bag, wherein the compression bag is fixedly installed in the installation groove, and the compression bag is located between the level body and the bracket;

[0013] A support rod is fixedly installed on the top of the sheath, the support rod is made of a double-headed spring telescopic rod, and the support rod is connected to the compression bag through a catheter.

[0014] Preferably, a plurality of buffer capsules are fixedly mounted on the inner wall of the sheath, and the buffer capsules are elastic hollow structures, and the sheath is in contact with the level body through the buffer capsules.

[0015] Preferably, a handle is installed on the collar, the collar is fixedly connected to the level body via a connecting bolt, and the connecting bolt and the handle are connected via a steel wire rope.

[0016] Preferably, a lifting plate is installed on the handle, a rotating ring is rotatably installed on the lifting plate, a buffer rod is fixedly installed on the rotating ring, the buffer rod is made of a spring telescopic rod, and a protective plate is installed on one end of the buffer rod away from the rotating ring.

[0017] Preferably, a pressure spring is fixedly mounted on the handle, the pressure spring is located on the ascending path of the lifting plate, and sealing strips are fixedly mounted on the sides of the sheaths close to each other.

[0018] Preferably, the sheaths are provided with locking grooves, the protective plates are designed in an X shape, and in an initial state, the sheaths are closed together, and the protective plates are located in the locking grooves.

[0019] Preferably, the buffer rod and the protective plate are arranged in two groups, and magnetic rods are fixedly mounted on both sides of the buffer rod. When the magnetic rods on the two buffer rods attract each other, the two groups of telescopic rods and the protective plate form a triangular structure.

[0020] Preferably, an adjusting groove is provided on the mounting seat, an adjusting piston is installed in the adjusting groove, an adjusting rod is threadedly connected to the opening of the adjusting groove, the adjusting rod is fixedly connected to the adjusting piston, and the adjusting groove is conductively connected to the compression bag through a catheter.

[0021] Preferably, a regulating valve is installed on the mounting seat, the regulating valve is directly connected to the regulating tank, and the regulating valve is used to adjust the pressure in the regulating tank.

[0022] A method for using a level for geophysical exploration, the method comprising the following steps:

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention discloses a level for geophysical exploration and a method of using the same. By providing a deformation protection mechanism, the positions of the two sleeves change under the two working states of the level body. When the sleeves and the mounting seat are closed, a closed space is formed, so that the degree of isolation between the level body and the outside world is increased, and the influence of external environmental factors on the level body is reduced. When the level body is working, the sleeves and the mounting seat are respectively located on the upper and lower sides of the level body, thereby facilitating the staff to operate the level body. At the same time, the sleeve located on the upper side of the level body can not only intercept foreign objects falling from the sky, but also in the process of the level body and the bracket tipping over, the presence of the sleeve can reduce the probability of the level body directly contacting the ground, thereby reducing the probability of damage to the level body.

[0025] 2. The present invention discloses a level for geophysical exploration and a method of using the same, which forms double protection on the outside of the level body by means of a protective plate and a protective sleeve. When the level body falls over along with the bracket, the probability of the level body being bumped is further reduced. The pressure spring and the sealing strip are arranged so that when the level body is separated from the bracket, the pressure spring drives the lifting plate and compresses the protective sleeve, and then cooperates with the support rod to drive the protective sleeve to close, thereby enhancing the sealing effect on the level body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 is a stereogram of the present invention;

[0028] Figure 2 is a three-dimensional diagram of the deformation protection mechanism of the present invention after it is unfolded;

[0029] Figure 3 It is a three-dimensional diagram of the present invention when it is tilted;

[0030] Figure 4It is a three-dimensional diagram of the assembly of the level body and the mounting base;

[0031] Figure 5 It is a partial assembly drawing of the sheath and the collar;

[0032] Figure 6 It is a three-dimensional diagram of the assembly of the lifting plate and the buffer rod;

[0033] Figure 7 is a stereogram of the mount;

[0034] Figure 8 is a cross-sectional view of the mounting base;

[0035] Fig. 9 is a flow chart of the method of the present invention;

[0036] In the figure: 1. Level body; 2. Ring; 21. Mounting seat; 22. Mounting groove; 23. Sheath; 24. Compression bag; 25. Support rod; 26. Buffer bag; 3. Handle; 31. Connecting bolt; 32. Wire rope; 4. Lifting plate; 41. Rotating ring; 42. Buffer rod; 43. Protective plate; 5. Pressure spring; 51. Sealing strip; 52. Locking groove; 53. Magnetic rod; 6. Adjusting groove; 61. Adjusting piston; 62. Adjusting rod; 63. Adjusting valve. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figures 1 to 9 As shown, a level for geophysical exploration described in the present invention comprises a level body 1 and a deformation protection mechanism installed on the level body 1;

[0039] The deformation protection mechanism is used to provide a cover-type protection for the level body 1, and the deformation protection mechanism includes:

[0040] A collar 2, wherein the collar 2 is sleeved and mounted on the level body 1, and the collar 2 is made of elastic rubber material;

[0041] A mounting seat 21, the mounting seat 21 is fixedly mounted below the collar 2, a mounting groove 22 is provided on the mounting seat 21, and the level body 1 is connected to an external bracket through the mounting groove 22;

[0042] A sheath 23, wherein the sheath 23 is symmetrically hinged on both sides of the collar 2, and the sheath 23 cooperates with the mounting seat 21 to cover the level body 1;

[0043] A compression capsule 24, wherein the compression capsule 24 is fixedly installed in the installation groove 22, and the compression capsule 24 is located between the level body 1 and the bracket;

[0044] A support rod 25 is fixedly mounted on the top of the sheath 23. The support rod 25 is made of a double-headed spring telescopic rod. The support rod 25 is connected to the compression bag 24 through a catheter.

[0045] During the long-term use of the level, when not in use, the level is preferably protected by a shrouded sealing mechanism. During the operation of the level, it is necessary to prevent the level from tipping over or bumping. In order to obtain better protection in the two different states of the level, a deformation protection mechanism is provided in the present invention to achieve protection for the level in the two states.

[0046] Specifically, when the level is not directly used during storage, transportation, etc., the two rings 2 and the mounting base 21 are combined with each other to form a closed cavity structure, and the level body 1 is located inside the cavity structure, thereby realizing a shrouding protection for the level. It should be noted that in the present invention, the sheath 23 is in contact with the level body 1 through the ring 2, and the ring 2 is made of elastic rubber material. Therefore, when the outside of the sheath 23 is impacted, under the action of the ring 2, the impact force suffered by the level body 1 will be greatly reduced.

[0047] When the level body 1 needs to be used, the staff aligns the mounting groove 22 at the bottom of the mounting seat 21 with the top of the bracket, then inserts the top of the bracket into the mounting seat 21, and connects and fixes it with a fastening bolt. As the fastening bolt gradually extends into the inside of the level body 1, the top of the bracket gradually approaches the level body 1, thereby generating pressure on the compression bag 24, causing the volume of the compression bag 24 to decrease. After the volume of the compression bag 24 changes, the fluid pressure inside it will change. Since the compression bag 24 is connected to the support rod 25 through a conduit, and the support rod 25 is made of a double-headed spring telescopic rod, in the initial state, under the elastic action of the support rod 25, the two sheaths 23 close to each other, and As the fluid pressure changes, under the action of pressure, the support rod 25 gradually extends, thereby pushing the two sheaths 23 to deflect. As the deflection angle of the sheath 23 gradually increases, the level body 1 is exposed to the outside world, and the deflected sheath 23 covers the top of the level body 1 to protect against foreign objects, rainwater, etc. from above. After the use of the level, the staff reversely tightens the fastening bolts to separate the level body 1 from the bracket. As the bracket gradually detaches from the mounting groove 22, under the action of gravity and the elasticity of the support rod 25, the fluid in the support rod 25 flows back to the compression bag 24. At the same time, the length of the support rod 25 is shortened and the sheath 23 is closed again for the next use.

[0048] The present invention provides a deformation protection mechanism, so that the positions of the two sleeves 23 change under the two working states of the level body 1. When the sleeves 23 and the mounting seat 21 are closed, a closed space is formed, so that the degree of isolation between the level body 1 and the outside world is increased, and the influence of external environmental factors on the level body 1 is reduced. When the level body 1 is working, the sleeves 23 and the mounting seat 21 are respectively located on the upper and lower sides of the level body 1, which makes it convenient for staff to operate the level body 1. At the same time, the sleeve 23 located on the upper side of the level body 1 can not only intercept foreign objects falling from the sky, but also in the process of the level body 1 and the bracket tipping over, the existence of the sleeve 23 can reduce the probability of the level body 1 directly contacting the ground, thereby reducing the probability of damage to the level body 1.

[0049] As a preferred embodiment of the present invention, a plurality of buffer capsules 26 are fixedly mounted on the inner wall of the sheath 23 . The buffer capsules 26 are elastic hollow structures. The sheath 23 is in contact with the level body 1 through the buffer capsules 26 .

[0050] A handle 3 is installed on the collar 2 . The collar 2 is fixedly connected to the level body 1 via a connecting bolt 31 . The connecting bolt 31 is connected to the handle 3 via a steel wire rope 32 .

[0051] In order to further enhance the performance of the deformation protection mechanism, a plurality of buffer bags 26 are arranged on the inner wall of the sheath 23 in the present invention. When the sheath 23 is impacted, even if the sheath 23 itself is deformed, the buffering effect of the buffer bag 26 can reduce the damage of the impact force to the level body 1. On the other hand, a handle 3 is arranged on the ring 2, and the handle 3 is connected to the level body 1 through a wire rope 32 and a connecting bolt 31. When the level is carried on the move, the existence of the handle 3 makes it convenient for the staff to lift it, and under the action of gravity, the wire rope 32 is taut. At this time, the gravity of the level body 1 directly acts on the staff's hands, and the lighter sheath 23 is covered on the outside of the level body 1. Compared with the staff directly lifting the sheath 23, when the level body 1 and the sheath 23 produce relative movement under the action of inertia, the vibration degree of the level body 1 can be effectively reduced.

[0052] As a preferred embodiment of the present invention, a lifting plate 4 is installed on the handle 3, a rotating ring 41 is rotatably installed on the lifting plate 4, a buffer rod 42 is fixedly installed on the rotating ring 41, the buffer rod 42 is made of a spring telescopic rod, and a protective plate 43 is installed on the end of the buffer rod 42 away from the rotating ring 41.

[0053] A pressure spring 5 is fixedly mounted on the handle 3 , and the pressure spring 5 is located on the ascending path of the lifting plate 4 . A sealing strip 51 is fixedly mounted on one side of the sheaths 23 that are close to each other.

[0054] In order to further reduce the probability of the level body 1 being damaged in the working state, a protective plate 43 is provided in the present invention. The protective plate 43 is mounted on the rotating ring 41 through the buffer rod 42, and the rotating ring 41 is rotatably mounted on the lifting plate 4. When the level body 1 and the bracket are fixed, the volume of the compression bag 24 changes, causing part of the fluid to flow into the buffer rod 42, thereby causing the buffer rod 42 to extend, so that the distance between the protective plate 43 and the level body 1 increases. When the level body 1 and the bracket are fixed, the sheath 23 is opened, and the protective plate 43 is located on the outside of the sheath 23 under the push of the buffer rod 42. When the level body 1 and the bracket are tilted, At this time, under the action of gravity and the rotation of the rotating ring 41, the protective plate 43 moves rapidly in the tipping direction. Since the protective plate 43 is the farthest from the level body 1 at this time, the protective plate 43 first contacts the ground, and then cooperates with the protective cover 23 to form double protection on the outside of the level body 1. In the process of the level body 1 following the tipping of the bracket, the probability of the level body 1 being bumped is further reduced. The setting of the pressure spring 5 and the sealing strip 51, when the level body 1 is separated from the bracket, the pressure spring 5 pushes the lifting plate 4 and compresses the protective cover 23, and then cooperates with the support rod 25 to push the protective cover 23 to close, thereby enhancing the sealing effect of the level body 1.

[0055] As a preferred embodiment of the present invention, a locking groove 52 is commonly formed on the sheath 23 , and the protective plate 43 is designed in an X shape. In an initial state, the sheath 23 is closed together, and the protective plate 43 is located in the locking groove 52 .

[0056] The locking groove 52 on the sheath 23 is provided after the level body 1 is separated from the bracket. At this time, the buffer rod 42 and the support rod 25 are both contracted, so that the sheath 23 is covered again on the outside of the level body 1, and then the protective plate 43 moves into the locking groove 52, thereby producing a locking effect on the two sheaths 23, thereby enhancing the effect. It should be noted that the initial elastic force of the buffer rod 42 is smaller than the initial elastic force of the support rod 25. Therefore, when the compression bag 24 is pressurized, the buffer rod 42 stretches first, and the support rod 25 does not start to stretch until the protective plate 43 is separated from the locking groove 52. Therefore, in actual application, it can effectively enhance the convenience of application of the deformation protection mechanism.

[0057] As a preferred embodiment of the present invention, the buffer rod 42 and the protective plate 43 are both arranged in two groups, and magnetic rods 53 are fixedly installed on both sides of the buffer rod 42. When the magnetic rods 53 on the two buffer rods 42 attract each other, the two groups of telescopic rods and the protective plate 43 form a triangular structure.

[0058] The buffer plate and the protective plate 43 are arranged in two groups. On the one hand, when the sheath 23 is locked, both ends of the sheath 23 can be locked. On the other hand, when the level body 1 and the bracket are tilted together, the two groups of buffer rods 42 and the protective plate 43 move in the tilting direction. Then, under the action of the magnetic rod 53, the telescopic rod and the protective plate 43 form a triangular structure, which can increase the probability of the protective plate 43 contacting the ground first, and at the same time reduce the probability of the telescopic rod and the protective plate 43 being damaged under the impact force.

[0059] As a preferred embodiment of the present invention, an adjustment groove 6 is provided on the mounting seat 21, an adjustment piston 61 is installed in the adjustment groove 6, an adjustment rod 62 is threadedly connected at the opening of the adjustment groove 6, the adjustment rod 62 is fixedly connected to the adjustment piston 61, and the adjustment groove 6 is connected to the compression bag 24 through a catheter.

[0060] The mounting seat 21 is provided with a regulating valve 63 . The regulating valve 63 is directly connected to the regulating tank 6 . The regulating valve 63 is used to adjust the pressure in the regulating tank 6 .

[0061] When the compression bag 24 of the present invention is compressed, the degree of change of the fluid pressure in the compression bag 24, the support rod 25 and the buffer rod 42 determines the opening angle of the sleeve 23. In order to enhance the flexibility of the use of the equipment, an adjustment slot 6 is provided in the present invention. After the connection between the level body 1 and the bracket is completed, the staff manually twists the adjustment rod 62, causing the adjustment rod 62 to push the adjustment piston 61 to move up and down in the adjustment slot 6, and then finely adjust the fluid pressure in the compression bag 24, the support rod 25 and the buffer rod 42, causing the deflection angle of the sleeve 23 to change, thereby changing the protective effect of the sleeve 23 on the level body 1. In addition, the presence of the adjustment valve 63 further enhances the adjustment range of the adjustment slot 6 on the fluid pressure in the support rod 25, the buffer rod 42 and the compression bag 24, making the equipment more flexible in use.

[0062] A method for using a level for geophysical exploration, the method comprising the following steps:

[0063] S1: Carry the level instrument with the handle 3 to the preset location to be surveyed, then set up the bracket, align and place the mounting groove 22 at the bottom of the mounting seat 21 with the bracket, and fix it by tightening bolts;

[0064] S2: When the top of the bracket gradually extends into the mounting groove 22, under the pressure conduction effect of the pressure bag, the support rod 25 and the buffer rod 42, the buffer rod 42 is extended and the sheath 23 is deflected, exposing the level body 1;

[0065] S3: The staff member twists the adjustment rod 62 by himself, so that the adjustment rod 62 pushes the adjustment piston 61 to rise and fall in the adjustment groove 6, thereby adjusting the deflection angle of the sheath 23 and changing the exposure degree of the level gauge;

[0066] S4: The staff performs the exploration work according to the exploration process. After the work is completed, the staff separates the level from the bracket, so that the deformation protection mechanism isolates the level body 1 from the outside world again.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A level for geophysical exploration, characterized in that: It comprises a level body (1) and a deformation protection mechanism installed on the level body (1); The deformation protection mechanism is used to provide a shielding protection for the level instrument body (1), and the deformation protection mechanism comprises: A sleeve ring (2), the sleeve ring (2) is sleeved and mounted on the level body (1), and the sleeve ring (2) is made of elastic rubber material; A mounting seat (21), the mounting seat (21) being fixedly mounted below the collar (2), the mounting seat (21) being provided with a mounting groove (22), and the level body (1) being connected to an external bracket via the mounting groove (22); A sheath (23), wherein the sheath (23) is symmetrically hinged on both sides of the collar (2), and the sheath (23) cooperates with the mounting seat (21) to cover the level instrument body (1); A compression bag (24), wherein the compression bag (24) is fixedly installed in the installation groove (22), and the compression bag (24) is located between the leveling instrument body (1) and the bracket; A support rod (25) is fixedly mounted on the top of the sheath (23), the support rod (25) is made of a double-headed spring telescopic rod, and the support rod (25) is connected to the compression bag (24) through a catheter.

2. A level for geophysical exploration according to claim 1, characterized in that: A plurality of buffer capsules (26) are fixedly mounted on the inner wall of the protective sleeve (23); the buffer capsules (26) are elastic hollow structures; and the protective sleeve (23) is in contact with the level instrument body (1) through the buffer capsules (26).

3. A level for geophysical exploration according to claim 2, characterized in that: A handle (3) is installed on the collar (2), the collar (2) is fixedly connected to the level body (1) via a connecting bolt (31), and the connecting bolt (31) and the handle (3) are connected via a steel wire rope (32).

4. A level for geophysical exploration according to claim 3, characterized in that: A lifting plate (4) is installed on the handle (3), a rotating ring (41) is rotatably installed on the lifting plate (4), a buffer rod (42) is fixedly installed on the rotating ring (41), the buffer rod (42) is made of a spring telescopic rod, and a protective plate (43) is installed on one end of the buffer rod (42) away from the rotating ring (41).

5. A level for geophysical exploration according to claim 4, characterized in that: A pressure spring (5) is fixedly mounted on the handle (3), and the pressure spring (5) is located on the ascending path of the lifting plate (4). A sealing strip (51) is fixedly mounted on one side of the sheaths (23) close to each other.

6. A level for geophysical exploration according to claim 5, characterized in that: The protective sleeves (23) are provided with a locking groove (52), and the protective plate (43) is designed in an X shape. In an initial state, the protective sleeves (23) are closed together, and the protective plate (43) is located in the locking groove (52).

7. A level for geophysical exploration according to claim 6, characterized in that: The buffer rod (42) and the protective plate (43) are both arranged in two groups, and magnetic rods (53) are fixedly installed on both sides of the buffer rod (42). When the magnetic rods (53) on the two buffer rods (42) attract each other, the two groups of telescopic rods and the protective plate (43) form a triangular structure.

8. A level for geophysical exploration according to claim 7, characterized in that: The mounting seat (21) is provided with an adjustment groove (6), an adjustment piston (61) is installed in the adjustment groove (6), an adjustment rod (62) is threadedly connected to the opening of the adjustment groove (6), the adjustment rod (62) is fixedly connected to the adjustment piston (61), and the adjustment groove (6) is conductively connected to the compression bag (24) via a catheter.

9. A level for geophysical exploration according to claim 8, characterized in that: A regulating valve (63) is installed on the mounting seat (21), the regulating valve (63) is directly connected to the regulating groove (6), and the regulating valve (63) is used to adjust the pressure in the regulating groove (6).

10. A method for using a level for geophysical exploration, characterized in that: The method is applicable to a level instrument for geophysical exploration as claimed in claim 9, and the method comprises the following steps: S1: Use the carrying handle (3) to carry the level to a preset location to be surveyed, then set up a bracket, align and place the mounting groove (22) at the bottom of the mounting seat (21) with the bracket, and fix them by tightening bolts; S2: When the top of the bracket gradually extends into the mounting groove (22), the pressure of the pressure bag, the support rod (25) and the buffer rod (42) is transmitted, causing the buffer rod (42) to extend and the sheath (23) to deflect, exposing the level instrument body (1); S3: The staff member twists the adjustment rod (62) by himself, so that the adjustment rod (62) pushes the adjustment piston (61) to rise and fall in the adjustment groove (6), thereby adjusting the deflection angle of the sheath (23) and changing the exposure degree of the level gauge; S4: The staff conducts exploration work according to the exploration process. After the work is completed, the level instrument is separated from the bracket, so that the deformation protection mechanism isolates the level instrument body (1) from the outside world again.

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