An apparatus for calibrating an instrument

Abstract

This utility model belongs to the field of instrument calibration technology and discloses an instrument calibration auxiliary device, including an instrument case and an instrument platform located inside the instrument case. A limiting groove is formed in the inner wall of the instrument case, and a limiting plate is slidably connected to the inner wall of the limiting groove. The inner wall of the limiting plate is fixedly connected to the outer wall of the instrument platform. A fixing plate is provided on the inner wall of the instrument case. A spring and a telescopic rod are connected between the instrument platform and the fixing plate via a connecting plate. A connecting block is connected to the top of the fixing plate, and a connecting rod is connected to the connecting block via a rotating column. A sliding block is slidably connected in a sliding groove on the inner wall of the fixing plate, and the connecting rod is rotatably connected to the sliding block via the rotating column. This utility model effectively absorbs vibration and limits horizontal sway through the cooperation of the limiting plate and the buffer assembly, improving calibration accuracy. Furthermore, the quick-release mechanism enables rapid disassembly and assembly of the case, enhancing ease of use.

Description

Technical Field

[0001] This utility model relates to the field of instrument calibration technology, and in particular to an instrument calibration auxiliary device. Background Technology

[0002] As precision measuring tools, instruments and meters play a vital role in industrial production, scientific research experiments, and quality inspection. To ensure the accuracy and reliability of measurement data, instruments and meters must be calibrated regularly. The calibration process requires an environment with extremely high stability. Any slight external interference can directly lead to deviations in calibration results, seriously affecting the accuracy of subsequent measurements.

[0003] Existing instrument calibration auxiliary devices mostly adopt simple placement platforms or rigid connection structures. Such structures lack effective shock absorption and buffering mechanisms. When the external environment vibrates, shock waves are transmitted from the ground, or operators touch the workbench, the vibration energy will be directly transmitted to the instrument to be calibrated, causing the instrument pointer to shake or the sensor reading to jump. This makes the calibration work difficult or produces erroneous calibration data, and cannot meet the stringent requirements of high-precision calibration operations for a static and stable environment.

[0004] Therefore, this utility model proposes an instrument calibration auxiliary device to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems existing in the instrument calibration auxiliary device, such as the lack of an effective shock absorption and buffer mechanism, susceptibility to external environmental vibration interference leading to inaccurate calibration readings, unreasonable opening and closing structure design of the housing, and low ease of use, this utility model aims to provide an instrument calibration auxiliary device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an instrument calibration auxiliary device, including: an instrument case and an instrument platform located inside the instrument case.

[0007] The instrument case has a limiting groove on its inner wall, and a limiting plate is slidably connected to the inner wall of the limiting groove. The inner wall of the limiting plate is fixedly connected to the outer wall of the instrument platform. A fixing plate is provided on the inner wall of the instrument case. Connecting plates are fixedly connected to the bottom corner of the instrument platform and the top corner of the fixing plate. A spring and a telescopic rod are provided between the vertically corresponding connecting plates. Connecting blocks are fixedly connected to the top left and right sides of the fixing plate. A rotating column is rotatably connected to the inner wall of the connecting block. A connecting rod is rotatably connected to the middle of the outer wall of the rotating column. A sliding groove is provided on the inner wall of the fixing plate. A sliding block is slidably connected to the inner wall of the sliding groove. The top of the connecting rod is rotatably connected to the sliding block through the rotating column. The instrument case is provided with a quick-release mechanism, which includes a T-shaped block and a connecting block two fixedly connected to the instrument case.

[0008] Furthermore, the instrument platform is restricted to vertical movement through the sliding engagement of the limiting plate and the limiting groove to prevent horizontal swaying. Vertical shock absorption and buffering are achieved through the cooperation of the spring and the telescopic rod. At the same time, the linkage mechanism composed of the connecting rod, the rotating column and the sliding block can provide dynamic support when the fixed plate is subjected to pressure.

[0009] Preferably, the inner wall of the second connecting block has a second sliding groove, and a locking post is slidably connected to the inner wall of the second sliding groove. A limit block is fixedly connected to the right end of the locking post. The second sliding groove penetrates the left and right side walls of the second connecting block, providing a channel for the locking post to slide laterally. The limit block is located on the outside of the second connecting block for easy gripping by the operator. The limit block is located outside the second connecting block, and the outer diameter of the limit block is larger than the diameter of the second sliding groove. The size design of the limit block ensures that the locking post will not slide completely into the second sliding groove, thus limiting its travel.

[0010] Preferably, a sliding groove three is formed on the inner wall of the connecting block two and above the sliding groove two. The sliding groove three is connected to the interior of the sliding groove two, and the design of the sliding groove three provides installation and movement space for the subsequent locking mechanism. A locking block is slidably connected to the inner wall of the sliding groove three, and the locking block extends above the connecting block two. The locking block serves as a manual operating component for controlling the locking and unlocking of the locking post. A locking groove is formed on the outer wall of the locking post, and the shape of the locking groove is adapted to the bottom of the locking block to accommodate the locking block in the locked state.

[0011] Preferably, the locking block can slide along the sliding groove three and engage with the locking groove to restrict the movement of the locking post within the sliding groove two. This mechanical locking method fixes the position of the locking post and prevents accidental sliding. The T-shaped block and the connecting block two are interlocked, and the locking post can pass through the sliding groove two to limit and fix the T-shaped block. By the locking post passing through the joint between the T-shaped block and the connecting block two, the closing and locking function of the quick-release mechanism is realized.

[0012] This utility model has the following beneficial effects: 1. This utility model solves the problem of inaccurate readings caused by the susceptibility of instrument calibration devices to external environmental vibrations by setting a sliding fit structure of a limiting groove and a limiting plate on the inner wall of the instrument box, and setting a buffer assembly composed of a spring and a telescopic rod between the instrument platform and the fixed plate. It achieves the effect of effectively absorbing vertical impact energy, limiting horizontal shaking, and providing a highly stable calibration environment for precision instruments.

[0013] 2. This utility model solves the problems of cumbersome opening and closing operation and insufficient connection stability of the instrument case in the prior art by setting a quick-release mechanism including a T-shaped block, a connecting block, a sliding groove, a locking post, and a locking block on the front side wall of the instrument case, and adopting a double mechanical locking design with the locking block and the locking post and the slot cooperating. It achieves the effect of quick disassembly and assembly of the case without the aid of tools, and secure and reliable connection during carrying and transportation, thereby improving the convenience of use and work efficiency. Attached Figure Description

[0014] Figure 1 The present invention provides a front three-dimensional view of an instrument calibration auxiliary device. Figure 1 ; Figure 2 The present invention provides a front three-dimensional view of an instrument calibration auxiliary device. Figure 2 ; Figure 3 This is a partial structural exploded view of an instrument calibration auxiliary device proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 The present invention provides a front three-dimensional view of an instrument calibration auxiliary device. Figure 3 ; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a partial structural diagram of an instrument calibration auxiliary device proposed in this utility model.

[0015] Legend: 1. Instrument case; 2. Quick release mechanism; 201. T-block; 202. Connecting block two; 203. Sliding groove two; 204. Locking post; 205. Limiting block; 206. Sliding groove three; 207. Locking slot; 208. Locking block; 3. Limiting groove; 4. Limiting plate; 5. Instrument platform; 6. Fixing plate; 7. Connecting plate; 8. Telescopic rod; 9. Spring; 10. Connecting block one; 11. Rotating column; 12. Connecting rod; 13. Sliding block; 14. Sliding groove one. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] Example: Please refer to Figures 1 to 7 This utility model provides an instrument calibration auxiliary device, which aims to solve the problems of inaccurate readings caused by external vibrations and inconvenience in opening and closing the instrument case 1 in the prior art during the instrument calibration process.

[0018] Please refer to Figure 1 and Figure 2 The instrument calibration auxiliary device mainly consists of an external protective structure and an internal shock-absorbing support structure. The instrument box 1 serves as the main frame of the device, providing the installation foundation. The instrument platform 5 located inside the instrument box 1 is used to support the precision instrument to be calibrated. A limit groove 3 is vertically opened on the inner side wall of the instrument box 1. A limit plate 4 is slidably connected to the inner wall of the limit groove 3. The side of the limit plate 4 is fixedly connected to the outer wall of the instrument platform 5. The sliding fit of the limit plate 4 in the limit groove 3 restricts the horizontal displacement of the instrument platform 5, ensuring that the instrument platform 5 can only move in the vertical direction and will not tilt laterally.

[0019] Please refer to Figure 3To achieve flexible vibration reduction, a fixed plate 6 is fixedly connected to the inner bottom wall of the instrument box 1. The fixed plate 6 serves as the bottom load-bearing platform. Connecting plates 7 are fixedly connected to the four corners of the bottom of the instrument platform 5 and the corresponding positions on the top of the fixed plate 6. A buffer assembly is connected between the two vertically aligned connecting plates 7. The buffer assembly consists of a telescopic rod 8 located in the center and a spring 9 sleeved on the outside of the telescopic rod 8. The two ends of the telescopic rod 8 are fixed to the upper and lower connecting plates 7 respectively. The two ends of the spring 9 abut against the surfaces of the connecting plates 7 corresponding to the instrument platform 5 and the fixed plate 6 respectively. The elastic deformation of the spring 9 absorbs vibration energy, and the guiding effect of the telescopic rod 8 ensures the verticality of the motion trajectory.

[0020] Please refer to Figure 4 To further enhance the stability of the calibration auxiliary device under heavy load, connecting blocks 10 are fixedly connected to the top left and right sides of the fixed plate 6. The inner wall of the connecting block 10 is rotatably connected to the rotating column 11 via bearings. The outer wall of the middle part of the rotating column 11 is rotatably connected to the connecting rod 12. The connecting rod 12 can deflect around the rotating column 11. A horizontal sliding groove 14 is opened on the inner side wall of the fixed plate 6. A sliding block 13 is slidably connected to the inner wall of the sliding groove 14. The end of the connecting rod 12 away from the connecting block 10 is rotatably connected to the top of the sliding block 13 via another rotating column 11. When the calibration auxiliary device is under pressure, the connecting rod 12 rotates and pushes the sliding block 13 to move laterally in the sliding groove 14, forming a variable triangular support structure, thereby helping to share the vertical pressure.

[0021] Please refer to Figure 2 The front side wall of the instrument case 1 is equipped with a quick-release mechanism 2. The quick-release mechanism 2 is used to quickly lock and open the case. The basic components of the quick-release mechanism 2 include a T-shaped block 201 fixedly installed on the edge of the cover of the instrument case 1, and a connecting block 202 fixedly installed at the corresponding position on the body of the instrument case 1. The T-shaped block 201 and the connecting block 202 are engaged to achieve the initial positioning of the cover and the body.

[0022] Please refer to Figure 5 , Figure 6 and Figure 7A sliding groove 203 is horizontally opened inside the connecting block 202, forming a movement channel for the locking component. A locking post 204 is slidably connected to the inner wall of the sliding groove 203. The locking post 204 has a long rod-shaped structure and can move left and right along the sliding groove 203. One end of the locking post 204 extends to the outside of the connecting block 202 and is fixedly connected to a limiting block 205. The outer diameter of the limiting block 205 is larger than the hole diameter of the sliding groove 203, which is used to prevent the locking post 204 from sliding completely into the groove and to provide a hand-held operating part. A sliding groove 3 206 is opened inside the connecting block 202 and above the sliding groove 203. The sliding groove 3 206 extends axially and its bottom is connected to the top of the sliding groove 203, forming a connected internal cavity.

[0023] Meanwhile, a locking block 208 is slidably fitted on the inner wall of the sliding groove 206. The top of the locking block 208 extends out of the upper surface of the connecting block 202 for finger manipulation. A ring-shaped or groove-shaped locking groove 207 is provided on the outer circumferential surface of the locking post 204. The position of the locking groove 207 corresponds to the position of the sliding groove 206. In the assembled or locked state, when the locking post 204 moves along the sliding groove 203 to a specific position, the locking groove 207 is directly opposite the sliding groove 206. At this time, the locking block 208 is pushed down, and the bottom end of the locking block 208 passes through the sliding groove 206 and is embedded in the locking groove 207.

[0024] The interlocking locking structure ensures that the locking post 204 is mechanically locked and cannot be axially displaced within the sliding groove 203, thereby forcing the locking post 204 to remain locked through the T-block 201 and preventing the instrument box 1 from being accidentally opened.

[0025] To reduce sliding friction and extend component life, the inner wall surfaces of sliding groove 14 and sliding groove 203 are coated with Teflon wear-resistant coating. The surfaces of sliding block 13 and locking post 204 are subjected to hard anodizing treatment. This surface treatment process significantly reduces the coefficient of friction between mating surfaces, making sliding block 13 more sensitive when sliding under pressure, while ensuring that locking post 204 is not easily worn or stuck during frequent insertion and removal operations.

[0026] To further improve the vibration reduction effect and eliminate resonance, the telescopic rod 8 is designed as an inflatable or hydraulic damping rod structure. The internal cavity of the telescopic rod 8 is filled with damping oil or high-pressure gas. The damping force generated by the fluid passing through the throttling orifice is used to consume vibration energy. Combined with the elastic support of the outer spring 9, a composite vibration reduction system is formed, which can more quickly attenuate the aftershocks of the instrument platform 5 after being impacted, and make the calibration environment quickly return to stillness.

[0027] To enhance the operational feel and positioning accuracy of the quick-release mechanism 2, a miniature positioning bead or spring structure is provided between the locking block 208 and the sliding groove 206. When the locking block 208 slides to the position where it is engaged in the slot 207, the positioning structure provides a slight suction or resistance to prevent the locking block 208 from sliding out on its own due to gravity or slight vibration, ensuring that it can only be unlocked when force is applied manually, thereby improving the safety of the calibration auxiliary device during the carrying process.

[0028] To accommodate the placement requirements of instruments of different sizes, the instrument platform 5 has several T-shaped grooves on its surface and is equipped with adjustable clamping components. The clamping components are fixed to the surface of the instrument platform 5 by bolts to clamp and fix instruments of different specifications, preventing relative displacement of the instruments on the platform during calibration.

[0029] Working principle: At the start of the instrument calibration operation, the instrument is fixed on the instrument platform 5. When the device is subjected to vibration interference from the external environment, the vibration wave is transmitted to the fixed plate 6 through the instrument case 1. The connecting plate 7, spring 9, and telescopic rod 8 connected between the fixed plate 6 and the instrument platform 5 respond quickly. The spring 9 undergoes elastic deformation to absorb the vertical impact energy, and the telescopic rod 8 extends and retracts accordingly to provide damping and suppress the reciprocating rebound of the spring 9. At the same time, the limiting plate 4 on the side of the instrument platform 5 slides vertically in the limiting groove 3 on the inner wall of the instrument case 1. Due to the tight fit between the limiting plate 4 and the limiting groove 3, the horizontal swaying or tilting moment that may be generated during the vibration is effectively resisted, thereby preventing the instrument platform 5 from swinging left and right. Through the synergistic effect of the buffer component and the limiting component, this utility model solves the problem of decreased calibration accuracy caused by vibration interference in the prior art.

[0030] When the calibration auxiliary device carries a heavy instrument or is subjected to severe pressure, the vertical pressure forces the fixed plate 6 to undergo a slight deformation. At this time, the connecting block 10 transmits the force to the rotating column 11 and the connecting rod 12. The connecting rod 12 rotates around the axis and pushes the sliding block 13 at the top to slide outward along the sliding groove 14, converting part of the vertical pressure into horizontal displacement. This linkage slider mechanism constitutes a dynamic auxiliary support system, which effectively improves the overall rigidity and compressive stability of the calibration auxiliary device.

[0031] When the instrument case 1 needs to be closed after use, close the case cover so that the T-shaped block 201 is inserted into the corresponding position of the connecting block 202. Hold the limiting block 205 and push the locking post 204 inward along the sliding groove 203 until the locking post 204 passes through the T-shaped block 201 and is stopped by the limiting block 205. Then, move the locking block 208 along the sliding groove 3 206 into the locking groove 207 on the locking post 204 to complete the secondary mechanical locking and ensure that the case is firmly connected. Conversely, when unlocking, first remove the locking block 208 and then pull out the locking post 204 to quickly separate the case cover from the case.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An instrument calibration auxiliary device, comprising: Instrument box (1) and instrument table (5) located inside the instrument box (1); Its features are, The inner wall of the instrument box (1) has a limiting groove (3), and the inner wall of the limiting groove (3) is slidably connected to a limiting plate (4). The inner wall of the limiting plate (4) is fixedly connected to the outer wall of the instrument table (5). The inner wall of the instrument box (1) is provided with a fixing plate (6). The bottom corner of the instrument table (5) and the top corner of the fixing plate (6) are both fixedly connected with connecting plates (7). A spring (9) and a telescopic rod (8) are provided between the vertically corresponding connecting plates (7). The top left and right sides of the fixed plate (6) are fixedly connected to a connecting block (10), the inner wall of the connecting block (10) is rotatably connected to a rotating column (11), the middle of the outer wall of the rotating column (11) is rotatably connected to a connecting rod (12), the inner wall of the fixed plate (6) is provided with a sliding groove (14), the inner wall of the sliding groove (14) is slidably connected to a sliding block (13), and the top of the connecting rod (12) is rotatably connected to the sliding block (13) through the rotating column (11). The instrument case (1) is provided with a quick-release mechanism (2), which includes a T-shaped block (201) fixedly connected to the instrument case (1) and a connecting block two (202).

2. The instrument calibration auxiliary device according to claim 1, characterized in that, The inner wall of the connecting block 2 (202) is provided with a sliding groove 2 (203), and a locking post (204) is slidably connected to the inner wall of the sliding groove 2 (203). A limit block (205) is fixedly connected to the right end of the locking post (204).

3. The instrument calibration auxiliary device according to claim 2, characterized in that, The limiting block (205) is located outside the connecting block two (202), and the outer diameter of the limiting block (205) is larger than the aperture of the sliding groove two (203).

4. The instrument calibration auxiliary device according to claim 2, characterized in that, A sliding groove three (206) is provided on the inner wall of the connecting block two (202) and above the sliding groove two (203), and the sliding groove three (206) is connected to the interior of the sliding groove two (203).

5. The instrument calibration auxiliary device according to claim 4, characterized in that, The inner wall of the sliding groove three (206) is slidably connected with a locking block (208), which extends above the connecting block two (202).

6. The instrument calibration auxiliary device according to claim 5, characterized in that, The outer wall of the locking post (204) is provided with a locking groove (207).

7. The instrument calibration auxiliary device according to claim 6, characterized in that, The locking block (208) can slide along the sliding groove three (206) and lock into the locking groove (207) to restrict the movement of the locking post (204) in the sliding groove two (203).

8. The instrument calibration auxiliary device according to claim 2, characterized in that, The T-shaped block (201) and the connecting block two (202) are inserted into each other, and the locking post (204) can pass through the sliding groove two (203) to limit and fix the T-shaped block (201).

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