A voltmeter with protection function

Abstract

The present invention relates to the technical field of electronic measuring instruments, and discloses a voltmeter with a protective function, comprising a voltmeter body, wherein the outer surface of the voltmeter body is snap-connected with a first box body, the bottom of the first box body is provided with a first slot, the interior of the first slot is snap-connected with a vibration absorbing protection mechanism, the top of the vibration absorbing protection mechanism is fixedly connected to the bottom of the voltmeter body, and the upper and lower surfaces of the voltmeter body are both fixedly connected with a level sensor. The voltmeter with a protective function, by providing a center of gravity adjustment mechanism, causes the center of gravity of the voltmeter body to be accurately shifted to a side away from the dial. Due to the center of gravity shift, the side away from the dial is less likely to bear impact, reducing direct bumps and damage to the dial, effectively protecting the integrity of the dial, and furthermore, being able to absorb some vibrations, which is beneficial for protecting the precision components inside the voltmeter.

Description

Technical Field

[0001] The invention relates to the technical field of electronic measuring instruments, in particular to a voltmeter with a protection function. Background Art

[0002] In the modern electrical field, accurate voltage measurement is crucial for equipment operation monitoring, energy management and fault diagnosis. Whether it is motors, inverters and other equipment in industrial production or household appliances in daily life, their power needs to be measured to ensure their normal operation and efficient use of energy. Therefore, voltage measurement is crucial. It can help users understand the energy consumption of equipment so that they can take energy-saving measures and reduce energy costs. At the same time, power measurement is also an indispensable part of the operation and maintenance of power systems. It can help power engineers monitor the load of the power grid and ensure the stable operation of the power system.

[0003] In modern society, with the widespread use of electronic devices and the increasing importance of energy management, the demand for voltage measurement continues to increase. Whether in industrial production, scientific research, or daily life, accurate measurement of the power consumption of various electrical devices is necessary for equipment commissioning, fault diagnosis, energy management, and cost control. At the same time, with the accelerated pace of life and the diversification of work styles, the demand for portable measurement tools is also increasing.

[0004] Existing voltmeters often lack effective protection when used or carried. Even minor bumps can affect the precision components inside, reducing measurement accuracy and impacting the accuracy of measurement results. Severe impacts can cause visible physical damage, such as cracked casings and damaged displays. Internal components are also likely to be severely damaged, or even completely destroyed, reducing work efficiency. Summary of the Invention

[0005] The object of the present invention is to provide a voltmeter with a protection function to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: A voltmeter with a protective function, comprising a voltmeter body, a first housing snap-fitted to the outer surface of the voltmeter body, a first slot defined in the bottom of the first housing, a vibration-absorbing protective mechanism snap-fitted within the first slot, the top of the vibration-absorbing protective mechanism fixedly connected to the bottom of the voltmeter body, a level sensor fixedly connected to both the upper and lower surfaces of the voltmeter body, a first ventilation slot and an expansion slot defined in the outer surface of the first housing, an expansion protection mechanism snap-fitted within the expansion slot, the bottom of the expansion protection mechanism fixedly connected to the outer surface of the voltmeter body, and further comprising:

[0007] The center of gravity adjustment mechanism is fixedly connected to the outer surface of the voltmeter body, and the center of gravity adjustment mechanism includes a second box body, and the second box body is fixedly connected to the outer surface of the voltmeter body. A second ventilation slot is provided at the left end of the second box body, and a second card slot is provided at the right side of the second box body. The second card slot passes through the upper surface of the second box body, and the interior of the second card slot is fixedly connected to the first flexible accordion cover, and the interior of the second ventilation slot is fixedly connected to the air volume sensor. The top of the second box body is fixedly connected to a circular electromagnet through a through hole, and the inner wall of the second box body is fixedly connected to a first limiting shaft and a second limiting shaft, and the outer surface of the first limiting shaft is rotatably connected to the first rotating rod, and the outer surface of the second limiting shaft is rotatably connected to the second rotating rod.

[0008] According to the above technical solution, the center of gravity adjustment mechanism also includes the first rotating shaft, the left inner surface of the first rotating rod is fixedly connected to the first rotating shaft, the top of the first rotating shaft is fixedly connected to the left inner surface of the second rotating rod, the outer surface of the first rotating shaft is rotatably connected to the magnetic rotating rod, the inner surface of the second box is fixedly connected to the first limiting card block and the second limiting card block, the right side of the second limiting card block is fixedly connected to the first spring, the right side of the first spring is fixedly connected to the card slot connecting block, the right inner surface of the first rotating rod is fixedly connected to the second rotating shaft, the top of the second rotating shaft is fixedly connected to the second The right inner surface of the rotating rod is fixedly connected, and the outer surface of the second rotating shaft is rotatably connected to the block rotating rod, and the block rotating rod is clamped with the slot connecting block, the right side of the slot connecting block is fixedly connected to the first connecting block, the bottom of the first connecting block is clamped with the second slot, the top of the first connecting block is fixedly connected to the second slot connecting block, the second slot connecting block and the second slot pass through the top part of the second box body, the right side of the first connecting block is fixedly connected to the heavy circular column, the outer surface of the heavy circular column is fixedly connected to the first clamping block, and the first clamping block is clamped with the second slot.

[0009] According to the above technical solution, the vibration absorption protection mechanism includes a sleeve, which is fixedly connected to the outer surface of the voltmeter body, and the bottom of the sleeve is fixedly connected to the second flexible accordion cover, the bottom of the second flexible accordion cover is fixedly connected to the first base plate, the bottom of the first base plate is fixedly connected to the rubber base plate, the bottom of the first base plate is fixedly connected to an elastic component, and the elastic component includes a second annular electromagnet, the bottom plate of the second annular electromagnet is fixedly connected to the top of the first base plate, the right side of the voltmeter body is fixedly connected to the first annular electromagnet and the second spring, the bottom of the second spring is fixedly connected to the top of the first base plate, the inside of the second spring is fixedly connected to the first circular column, the first circular column is fixedly connected to the slot circular column by opening a through hole, and the inside of the slot circular column is clamped with a rubber vibration-absorbing ball by opening a slot.

[0010] According to the above technical solution, the extension protection mechanism includes a leaf spring, the bottom of the leaf spring is fixedly connected to the outer surface of the voltmeter body, the outer surface of the voltmeter body is fixedly connected to a first rubber support column and a second rubber support column, the top of the first rubber support column and the second rubber support column are fixedly connected to a third box body, the top of the leaf spring is fixedly connected to a first air spring, the top of the first air spring is fixedly connected to a second air spring, the interior of the first air spring is slidably connected to a third annular electromagnet, the interior of the third annular electromagnet is fixedly connected to a second circular column, the outer surface of the second circular column is slidably connected to a fourth annular electromagnet, the fourth annular electromagnet is fixedly connected to the second air spring, the bottom plate of the third box body is connected to the second circular column by a through-hole, and the top of the second circular column is fixedly connected to the first push column. The second extension column is clamped inside the third box body, and the left side of the second extension column is fixedly connected to the extension component, and the extension component is symmetrically arranged with two groups, and the extension component includes a second connecting block, the second connecting block is fixedly connected to the first extension column, and the right side of the second connecting block is rotatably connected to the first rotating shaft connecting block through a rotating shaft, the right side of the first rotating shaft connecting block is rotatably connected to the second rotating shaft connecting block through the rotating shaft, and the right side of the second rotating shaft connecting block is rotatably connected to the third rotating shaft connecting block through the rotating shaft, and the third rotating shaft connecting block is rotatably connected to the fourth rotating shaft connecting block through the rotating shaft, and the fourth rotating shaft connecting block is rotatably connected to the limited pulling block through the rotating shaft, the second extension column is clamped inside the third box body, and the left side of the second extension column is fixedly connected to the symmetrically arranged extension components.

[0011] According to the above technical solution, the upper surface of the magnetic rotating rod is in contact with the lower surface of the circular electromagnet, the length of the second limit block is the same as the distance between the first rotating rod and the second rotating rod, the first limit block and the second limit block are both in contact with the outer surface of the magnetic rotating rod, a through hole is provided on the right side of the second box body, and a heavy circular column is connected thereto, and the center of gravity adjustment mechanism is symmetrically arranged in four groups on the outer surface of the voltmeter body.

[0012] According to the above technical solution, four groups of elastic components are symmetrically arranged on the top of the first bottom plate, and the first bottom plate and the rubber bottom plate are clamped with the first clamping slot.

[0013] According to the above technical solution, the extension component and the symmetrically arranged extension component are rotatably connected through a limiting pull block, the third box is engaged with the extension slot, and the extension protection mechanism is symmetrically arranged in four groups on the outer surface of the voltmeter body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This voltmeter with protection function is equipped with a center of gravity adjustment mechanism, which allows the center of gravity of the voltmeter body to be accurately shifted to the side away from the dial. Due to the shift of the center of gravity, the side away from the dial is more likely to bear the impact, reducing direct bumps and damage to the dial, effectively protecting the integrity of the dial. In addition, it can also absorb some vibrations, which is beneficial to protecting the precision components inside the voltmeter.

[0016] 2. The voltmeter with protection function is equipped with a vibration absorption protection mechanism. After the center of gravity adjustment mechanism is set, it absorbs the concentrated vibration caused by the impact concentrated on the side away from the dial due to the offset of the center of gravity, thereby reducing the damage caused by the concentrated vibration to the structure and internal components of the voltmeter. It not only extends the service life of the voltmeter, but also reduces the cost of maintenance and replacement, and ensures the smooth progress of various work and experiments.

[0017] 3. This protective voltmeter, with its extension protection mechanism, protects against impacts caused by a shift in the center of gravity during a fall, where the side away from the dial is insufficient to adjust downward. This mechanism provides a buffering effect during impacts, further minimizing damage to the voltmeter. Furthermore, it addresses the issue of the voltmeter not being able to maintain its dial-side orientation downward, potentially resulting from rotation caused by a shift in the center of gravity during a fall. This maximizes protection for the dial and key internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0019] Figure 2 It is a partial schematic diagram of the main structure of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the first box body of the present invention.

[0021] Figure 4 This is a structural sectional view of the second box body of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the center of gravity adjustment mechanism of the present invention.

[0023] Figure 6 It is a structural sectional view of the center of gravity adjustment mechanism of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the vibration absorption protection mechanism of the present invention.

[0025] Figure 8 It is a structural cross-sectional view of the elastic component of the present invention.

[0026] Figure 9 Schematic diagram of the structure of the extension protection mechanism of the present invention.

[0027] Figure 10 It is a structural cross-sectional view of the extension protection mechanism of the present invention.

[0028] In the figure: 1. Voltmeter body; 2. First box;

[0029] 3. Center of gravity adjustment mechanism;

[0030] 301, second housing; 302, second ventilation slot; 303, second card slot; 304, first flexible accordion cover; 305, air volume sensor; 306, circular electromagnet; 307, magnetic rotating rod; 308, first rotating shaft; 309, first position-limiting block; 310, second position-limiting block; 311, first position-limiting rotating shaft; 312, first rotating rod; 313, second position-limiting rotating shaft; 314, second rotating rod; 315, first spring; 316, card slot connecting block; 317, first connecting block; 318, card block rotating rod; 319, second rotating shaft; 320, second card slot connecting block; 321, heavy circular column; 322, first card block;

[0031] 4. First ventilation slot; 5. First card slot;

[0032] 6. Vibration absorption protection mechanism;

[0033] 601, ferrule; 602, second flexible accordion cover; 603, first bottom plate; 604, rubber bottom plate;

[0034] 6001, elastic components;

[0035] 605, first annular electromagnet; 606, second annular electromagnet; 607, second spring; 608, first circular column; 609, slot circular column; 610, rubber vibration-absorbing ball;

[0036] 7. Level sensor; 8. Extension slot;

[0037] 9. Extension protection mechanism;

[0038] 901, leaf spring; 902, first rubber support column; 903, second rubber support column; 904, third annular electromagnet; 905, second circular column; 906, first air spring; 907, second air spring; 908, fourth annular electromagnet; 909, third housing; 910, first push plate; 911, second push plate; 912, first extension column;

[0039] 9001, extension assembly;

[0040] 913, second connecting block; 914, first rotating shaft connecting block; 915, second rotating shaft connecting block; 916, third rotating shaft connecting block; 917, fourth rotating shaft connecting block;

[0041] 918. Limiting pull block; 919. Second extension column. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0044] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] Example 1: See Figures 1-6The present invention provides a technical solution: a voltmeter with a protection function, including a voltmeter body 1, a first box body 2 is clamped on the outer surface of the voltmeter body 1, a first clamping slot 5 is provided at the bottom of the first box body 2, a vibration absorption protection mechanism 6 is clamped inside the first clamping slot 5, the top of the vibration absorption protection mechanism 6 is fixedly connected to the bottom of the voltmeter body 1, a level sensor 7 is fixedly connected to the upper and lower surfaces of the voltmeter body 1, a first ventilation slot 4 and an expansion slot 8 are provided on the outer surface of the first box body 2, an expansion protection mechanism 9 is clamped inside the expansion slot 8, and the bottom of the expansion protection mechanism 9 is fixedly connected to the outer surface of the voltmeter body 1, and further comprising:

[0046] The center of gravity adjustment mechanism 3 is fixedly connected to the outer surface of the voltmeter body 1. The center of gravity adjustment mechanism 3 includes a second box body 301, which is fixedly connected to the outer surface of the voltmeter body 1. A second ventilation slot 302 is provided at the left end of the second box body 301, and a second card slot 303 is provided on the right side of the second box body 301. The second card slot 303 passes through the upper surface of the second box body 301. The interior of the second card slot 303 is fixedly connected to the first flexible accordion cover 304, and the interior of the second ventilation slot 302 is fixedly connected to the air volume sensor 305. The top of the second box body 301 is fixedly connected to a circular electromagnet 306 through a through hole. The inner wall of the second box body 301 is fixedly connected to a first limiting rotating shaft 311 and a second limiting rotating shaft 313. The outer surface of the first limiting rotating shaft 311 is rotatably connected to the first rotating rod 312, and the outer surface of the second limiting rotating shaft 313 is rotatably connected to the second rotating rod 314.

[0047] The center of gravity adjustment mechanism 3 also includes a first rotating shaft 308, the left inner surface of the first rotating rod 312 is fixedly connected to the first rotating shaft 308, the top of the first rotating shaft 308 is fixedly connected to the left inner surface of the second rotating rod 314, the outer surface of the first rotating shaft 308 is rotatably connected to the magnetic rotating rod 307, the inner surface of the second box body 301 is fixedly connected to the first limiting block 309 and the second limiting block 310, the right side of the second limiting block 310 is fixedly connected to the first spring 315, the right side of the first spring 315 is fixedly connected to the card slot connecting block 316, the right inner surface of the first rotating rod 312 is fixedly connected to the second rotating shaft 319, the top of the second rotating shaft 319 is fixedly connected to the right inner surface of the second rotating rod 314 The surface is fixedly connected, the outer surface of the second rotating shaft 319 is rotatably connected to the card block rotating rod 318, the card block rotating rod 318 is clamped with the card slot connecting block 316, the right side of the card slot connecting block 316 is fixedly connected to the first connecting block 317, the bottom of the first connecting block 317 is clamped with the second card slot 303, the top of the first connecting block 317 is fixedly connected to the second card slot connecting block 320, the second card slot connecting block 320 and the second card slot 303 passing through the top part of the second box body 301 are clamped, the right side of the first connecting block 317 is fixedly connected to the heavy circular column 321, the outer surface of the heavy circular column 321 is fixedly connected to the first card block 322, and the first card block 322 is clamped with the second card slot 303;

[0048] The upper surface of the magnetic rotating rod 307 contacts the lower surface of the circular electromagnet 306. The length of the second limit block 310 is the same as the distance between the first rotating rod 312 and the second rotating rod 314. The first limit block 309 and the second limit block 310 are both in contact with the outer surface of the magnetic rotating rod 307. A through hole is opened on the right side of the second box body 301 to connect with a heavy circular column 321. The center of gravity adjustment mechanism 3 is symmetrically arranged in four groups on the outer surface of the voltmeter body 1. By setting the center of gravity adjustment mechanism 3, the center of gravity of the voltmeter body 1 is shifted to the side away from the dial through the heavy circular column 321. Due to the shift of the center of gravity, the side away from the dial is more likely to bear the impact, which reduces direct collision and damage to the dial and effectively protects the integrity of the dial. In addition, it can also absorb part of the vibration, which is beneficial to protecting the precision components inside the voltmeter.

[0049] The working principle of this embodiment is as follows: when the voltmeter with a protection function falls, the horizontal sensor 7 senses the horizontal tilt, and the air volume sensor 305 senses the air volume generated by the falling wind speed through the first ventilation slot 4 and the second ventilation slot 302, thereby activating the circular electromagnet 306. The circular electromagnet 306 is activated and repels the magnetic rotating rod 307 to move downward, and the first limiting block 309 and the second limiting block 310 limit it so that it can only move downward, and the first rotating shaft 308 causes the first rotating rod 312 and the second rotating rod 314 to rotate around the first limiting rotating shaft 311 and the second limiting rotating shaft 313, driving the second rotating shaft 319 to rise, and causing the block rotating rod 318 to move upward Move it out of the slot connecting block 316. At this time, the first spring 315 pushes the slot connecting block 316, the first connecting block 317 and the second slot connecting block 320 to move along the second slot 303 due to no obstruction, and drives the heavy circular column 321 to move through the first block 322, and cooperates with the symmetrically arranged center of gravity adjustment mechanism to achieve the offset and adjustment of the center of gravity, so that the side away from the dial is downward. If reset is required, the second slot connecting block 320 can be pushed to move along the second slot 303, so that the block rotating rod 318 is squeezed by the slot connecting block 316 and rotates along the second rotating shaft 319, and enters the slot of the slot connecting block 316 to achieve reset.

[0050] Example 2: Please refer to Figure 7-10 On the basis of the first embodiment, the present invention provides a technical solution: the vibration absorption protection mechanism 6 includes a ferrule 601, the ferrule 601 is fixedly connected to the outer surface of the voltmeter body 1, the bottom of the ferrule 601 is fixedly connected to the second flexible accordion cover 602, the bottom of the second flexible accordion cover 602 is fixedly connected to the first bottom plate 603, the bottom of the first bottom plate 603 is fixedly connected to the rubber bottom plate 604, the bottom of the first bottom plate 603 is fixedly connected to the elastic component 6001, and the elastic component 6001 includes a second annular electromagnet 606 The bottom plate of the second annular electromagnet 606 is fixedly connected to the top of the first bottom plate 603. The right side of the voltmeter body 1 is fixedly connected to the first annular electromagnet 605 and the second spring 607. The bottom of the second spring 607 is fixedly connected to the top of the first bottom plate 603. The interior of the second spring 607 is fixedly connected to the first circular column 608. The first circular column 608 is fixedly connected to the slot circular column 609 through a through hole. The interior of the slot circular column 609 is clamped with a rubber vibration absorbing ball 610 through a slot.

[0051] Four groups of elastic components 6001 are symmetrically arranged on the top of the first base plate 603. The first base plate 603 and the rubber base plate 604 are clamped with the first slot 5. By setting the vibration absorption protection mechanism 6 and the center of gravity adjustment mechanism 3 through the second spring 607, the concentrated vibration caused by the impact concentrated on the side away from the dial due to the center of gravity offset is absorbed, reducing the damage caused by the concentrated vibration to the structure and internal components of the voltmeter, which not only extends the service life of the voltmeter, but also reduces the cost of maintenance and replacement, and ensures the smooth progress of various work and experiments.

[0052] The extension protection mechanism 9 includes a leaf spring 901, the bottom of the leaf spring 901 is fixedly connected to the outer surface of the voltmeter body 1, the outer surface of the voltmeter body 1 is fixedly connected to a first rubber support column 902 and a second rubber support column 903, the top of the first rubber support column 902 and the second rubber support column 903 is fixedly connected to a third box body 909, the top of the leaf spring 901 is fixedly connected to a first air spring 906, the top of the first air spring 906 is fixedly connected to a second air spring 907, the interior of the first air spring 906 is slidably connected to a third annular electromagnet 904, the interior of the third annular electromagnet 904 is fixedly connected to a second circular column 905, the outer surface of the second circular column 905 is slidably connected to a fourth annular electromagnet 908, the fourth annular electromagnet 908 is fixedly connected to the second air spring 907, the bottom plate of the third box body 909 is connected to the second circular column 905 by a through hole, the top of the second circular column 905 is fixedly connected to a first push plate 910, the third box body 9 09 is fixedly connected to the upper surface of the inner wall of the second push plate 911, the interior of the third box body 909 is clamped with a first extension column 912, the right side of the first extension column 912 is fixedly connected to the extension component 9001, the extension component 9001 is symmetrically arranged in two groups, the extension component 9001 includes a second connecting block 913, the second connecting block 913 is fixedly connected to the first extension column 912, the right side of the second connecting block 913 is rotatably connected to the first shaft connecting block 914 through a rotating shaft, and the first shaft connecting block 91 4 is rotatably connected to a second rotating shaft connecting block 915 on the right side via a rotating shaft. The right side of the second rotating shaft connecting block 915 is rotatably connected to a third rotating shaft connecting block 916 via a rotating shaft. The third rotating shaft connecting block 916 is rotatably connected to a fourth rotating shaft connecting block 917 via a rotating shaft. The fourth rotating shaft connecting block 917 is rotatably connected to a limiting pull block 918 via a rotating shaft. A second extension column 919 is clamped inside the third box 909. A symmetrically arranged extension component 9001 is fixedly connected to the left side of the second extension column 919.

[0053] Extension assembly 9001 is rotatably connected to a symmetrically arranged extension assembly 9001 via a limiting pull block 918. A third housing 909 engages with the extension slot 8. Four extension protection mechanisms 9 are symmetrically arranged on the outer surface of the voltmeter body 1. The extension protection mechanisms 9, through the first extension column 912 and the second extension column 919, protect the voltmeter body 1 from impact when the center of gravity shifts and the falling distance is insufficient to adjust the side away from the dial downward. This provides a certain degree of cushioning during impact, further reducing damage to the voltmeter. This also addresses the issue of the voltmeter being unable to maintain its side away from the dial facing downward due to rotation caused by a shift in the center of gravity during the falling process, thereby maximizing protection for the dial and key internal components.

[0054] The working principle of this embodiment is as follows: when the side away from the dial is downward, the attraction between the first annular electromagnet 605 and the second annular electromagnet 606 is converted into repulsion, so that the elasticity of the second spring 607 is released, and the symmetrically arranged elastic component 6001 pushes the first bottom plate 603 and the rubber bottom plate 604 to move downward and move out of the first slot 5. When it falls to the ground and collides with it, the rubber bottom plate 604 absorbs part of the impact and vibration, and transmits it to the second spring 607 through the first bottom plate 603. Absorption, the rubber vibration-absorbing ball 610 absorbs impact and vibration inside the circular column 609 of the card slot. At this time, if rotation occurs due to the offset of the center of gravity, the horizontal sensor 7 senses and starts the third annular electromagnet 904, causing it to attract the fourth annular electromagnet 908 upward, causing the second circular column 905 to move upward. At this time, the first air spring 906 and the second air spring 907 are attracted by the third annular electromagnet 904 and the fourth annular electromagnet 908, making their insulation greater elasticity. The second circular column 905 pushes the first push plate 910 upward, and the third box body 909 remains stable due to the limited deformation of the first rubber support column 902 and the second rubber support column 903. The first push plate 910 and the second push plate 911 squeeze the extension component 9001 at the same time, and the first shaft connecting block 914, the second rotating shaft connecting block 915, the third rotating shaft connecting block 916 and the fourth rotating shaft connecting block 917 are compressed to push the second connecting block 913, and the second connecting block 913 pushes the first extending column 912 to move outward and extend, and the second extending column 919 is also pushed outward and extended due to the symmetrically arranged extension component 9001. The limiting pull block 918 enables it to extend outward at the same time, and cooperates with the symmetrically arranged extension protection mechanism 9. The extension length of both sides is longer than the length of the voltmeter body 1. Therefore, when it contacts the ground, the impact and vibration are transmitted to the leaf spring 901, the first rubber support column 902, the second rubber support column 903, the first air spring 906 and the second air spring 907 through the first extending column 912 and the second extending column 919 to absorb the impact and vibration, thereby protecting the voltmeter body 1.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A voltmeter with a protection function, comprising a voltmeter body (1), wherein the outer surface of the voltmeter body (1) is clamped with a first box body (2), the bottom of the first box body (2) is provided with a first clamping slot (5), the interior of the first clamping slot (5) is clamped with a vibration absorbing protection mechanism (6), the top of the vibration absorbing protection mechanism (6) is fixedly connected to the bottom of the voltmeter body (1), the upper surface and the lower surface of the voltmeter body (1) are both fixedly connected with a level sensor (7), the outer surface of the first box body (2) is provided with a first ventilation slot (4) and an extension slot (8), the interior of the extension slot (8) is clamped with an extension protection mechanism (9), the bottom of the extension protection mechanism (9) is fixedly connected to the outer surface of the voltmeter body (1), and characterized in that: Also includes: A center of gravity adjustment mechanism (3), wherein the center of gravity adjustment mechanism (3) is fixedly connected to the outer surface of the voltmeter body (1), and the center of gravity adjustment mechanism (3) comprises a second box body (301), wherein the second box body (301) is fixedly connected to the outer surface of the voltmeter body (1), a second ventilation slot (302) is provided at the left end of the second box body (301), a second card slot (303) is provided at the right side of the second box body (301), the second card slot (303) passes through the upper surface of the second box body (301), and the interior of the second card slot (303) is fixed. A first flexible accordion cover (304) is connected, an air volume sensor (305) is fixedly connected inside the second ventilation slot (302), a circular electromagnet (306) is fixedly connected to the top of the second box body (301) via a through hole, a first limiting rotating shaft (311) and a second limiting rotating shaft (313) are fixedly connected to the inner wall of the second box body (301), the outer surface of the first limiting rotating shaft (311) is rotatably connected to the first rotating rod (312), and the outer surface of the second limiting rotating shaft (313) is rotatably connected to the second rotating rod (314).

2. The voltmeter with protection function according to claim 1, characterized in that: The center of gravity adjustment mechanism (3) further comprises a first rotating shaft (308), a left inner surface of the first rotating rod (312) is fixedly connected to the first rotating shaft (308), a top of the first rotating shaft (308) is fixedly connected to the left inner surface of the second rotating rod (314), an outer surface of the first rotating shaft (308) is rotatably connected to a magnetic rotating rod (307), an inner surface of the second box (301) is fixedly connected to a first limiting block (309) and a second limiting block (310), a right side of the second limiting block (310) is fixedly connected to a first spring (315), a right side of the first spring (315) is fixedly connected to a card slot connection block (316), a right inner surface of the first rotating rod (312) is fixedly connected to a second rotating shaft (319), a top of the second rotating shaft (319) is fixedly connected to the right inner surface of the second rotating rod (314), and a second rotating shaft (319) is fixedly connected to the right inner surface of the second rotating rod (314). The second rotating shaft (319) is fixedly connected to the outer surface thereof with a block rotating rod (318), the block rotating rod (318) is clamped with the slot connecting block (316), the right side of the slot connecting block (316) is fixedly connected to the first connecting block (317), the bottom of the first connecting block (317) is clamped with the second slot (303), the top of the first connecting block (317) is fixedly connected to the second slot connecting block (320), the second slot connecting block (320) is clamped with the top part of the second slot (303) passing through the second box body (301), the right side of the first connecting block (317) is fixedly connected to a heavy circular column (321), the outer surface of the heavy circular column (321) is fixedly connected to the first block (322), and the first block (322) is clamped with the second slot (303).

3. The voltmeter with protection function according to claim 1, characterized in that: The vibration absorption protection mechanism (6) comprises a ferrule (601), the ferrule (601) is fixedly connected to the outer surface of the voltmeter body (1), the bottom of the ferrule (601) is fixedly connected to a second flexible accordion cover (602), the bottom of the second flexible accordion cover (602) is fixedly connected to a first bottom plate (603), the bottom of the first bottom plate (603) is fixedly connected to a rubber bottom plate (604), the bottom of the first bottom plate (603) is fixedly connected to an elastic component (6001), the elastic component (6001) comprises a second annular electromagnet (606), the second annular electromagnet (606) is fixedly connected to the bottom of the first bottom plate (603), and the elastic component (6001) comprises a second annular electromagnet (606). The bottom plate of the magnet (606) is fixedly connected to the top of the first bottom plate (603); the right side of the voltmeter body (1) is fixedly connected to a first annular electromagnet (605) and a second spring (607); the bottom of the second spring (607) is fixedly connected to the top of the first bottom plate (603); the interior of the second spring (607) is fixedly connected to a first circular column (608); the first circular column (608) is fixedly connected to a slot circular column (609) via a through hole; the interior of the slot circular column (609) is clamped with a rubber vibration-absorbing ball (610) via a slot.

4. The voltmeter with protection function according to claim 1, characterized in that: The extension protection mechanism (9) comprises a leaf spring (901), the bottom of the leaf spring (901) is fixedly connected to the outer surface of the voltmeter body (1), the outer surface of the voltmeter body (1) is fixedly connected to a first rubber support column (902) and a second rubber support column (903), the tops of the first rubber support column (902) and the second rubber support column (903) are fixedly connected to a third box (909), the top of the leaf spring (901) is fixedly connected to a first air spring (906), and the top of the first air spring (906) is fixedly connected to a second air spring (907). The first air spring (906) is internally slidably connected to a third annular electromagnet (904), the third annular electromagnet (904) is internally fixedly connected to a second circular column (905), the outer surface of the second circular column (905) is slidably connected to a fourth annular electromagnet (908), the fourth annular electromagnet (908) is fixedly connected to the second air spring (907), the bottom plate of the third box body (909) is connected to the second circular column (905) by opening a through hole, the top of the second circular column (905) is fixedly connected to the first push plate (910), the third box body The upper surface of the inner wall of the body (909) is fixedly connected with a second push plate (911), the interior of the third box body (909) is clamped with a first extension column (912), the right side of the first extension column (912) is fixedly connected with an extension component (9001), the extension component (9001) is symmetrically arranged in two groups, the extension component (9001) includes a second connecting block (913), the second connecting block (913) is fixedly connected to the first extension column (912), the right side of the second connecting block (913) is rotatably connected to the first rotating shaft connecting block (914) through a rotating shaft, and the first rotating shaft is connected to the first rotating shaft. The right side of the connecting block (914) is connected to a second rotating shaft connecting block (915) through a rotating shaft, the right side of the second rotating shaft connecting block (915) is connected to a third rotating shaft connecting block (916) through a rotating shaft, the third rotating shaft connecting block (916) is connected to a fourth rotating shaft connecting block (917) through a rotating shaft, the fourth rotating shaft connecting block (917) is connected to a limited pull block (918) through a rotating shaft, the interior of the third box body (909) is clamped with a second extension column (919), and the left side of the second extension column (919) is fixedly connected to a symmetrically arranged extension component (9001).

5. The voltmeter with protection function according to claim 2, characterized in that: The upper surface of the magnetic rotating rod (307) contacts the lower surface of the circular electromagnet (306); the length of the second limit block (310) is the same as the distance between the first rotating rod (312) and the second rotating rod (314); the first limit block (309) and the second limit block (310) both contact the outer surface of the magnetic rotating rod (307); a through hole is provided on the right side of the second box (301) to which a heavy circular column (321) is connected; and four groups of the center of gravity adjustment mechanism (3) are symmetrically arranged on the outer surface of the voltmeter body (1).

6. The voltmeter with protection function according to claim 3, characterized in that: Four groups of the elastic components (6001) are symmetrically arranged on the top of the first bottom plate (603), and the first bottom plate (603) and the rubber bottom plate (604) are engaged with the first card slot (5).

7. The voltmeter with protection function according to claim 4, characterized in that: The extension component (9001) is rotatably connected to the symmetrically arranged extension component (9001) via a limiting pull block (918), the third box (909) is engaged with the extension slot (8), and the extension protection mechanism (9) is symmetrically arranged in four groups on the outer surface of the voltmeter body (1).

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