Workbench for pressure gauge metrological verification

Abstract

The utility model discloses a working table for pressure gauge metrological verification, which relates to the technical field of pressure gauge metrological verification and comprises a working table main body provided with a metrological verification device. The two electric cylinders are installed on the workbench body, the telescopic ends of the two electric cylinders are connected with fixing bases, a limiting plate is connected between the two fixing bases, and a plurality of first limiting assemblies are embedded in the limiting plate at equal intervals; and a plurality of second limiting assemblies are nested in the fixing plate at equal intervals. According to the utility model, the plurality of first limiting assemblies are nested in the limiting plate at equal intervals, the plurality of second limiting assemblies are nested in the fixing plate at equal intervals, and the first limiting assemblies and the second limiting assemblies cooperate to limit and fix the pressure gauge, so that the fixing stability of the pressure gauge is improved; the problem that the pressure gauge possibly topples or inclines and cannot be in butt joint with the pressure pipe orifice is solved, and smooth metrological verification is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge metrology and verification technology, specifically to a workbench for pressure gauge metrology and verification. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as a sensing element to measure and indicate pressures higher than the ambient pressure. It is widely used and can be found in almost all industrial processes and scientific research fields. During the production of pressure gauges, the finished products need to be calibrated to ensure the quality of the pressure gauges. The calibration process is all done on a workbench.

[0003] A search revealed that Chinese utility model patent CN216925915U discloses a pressure gauge calibration workbench, comprising a workbench body, support rods fixedly installed near the four corners of the lower surface of the workbench body, a control box fixedly installed near the upper front end of one side surface of the workbench body, a calibration device movably installed on the upper surface of the workbench body, adjusting rods fixedly installed on both sides of the calibration device on the upper surface of the workbench body, servo motors fixedly installed near both sides of the rear surface of the workbench body, and a pressure gauge fixing device movably installed on one side surface of the adjusting rod above the calibration device. This utility model's pressure gauge calibration workbench, through the interaction of the pressure gauge fixing device and adjusting rods, allows for flexible installation and removal of the pressure gauge. Furthermore, the installed pressure gauge generates downward pressure, making the connection between the pressure gauge and the pressure port more secure during installation.

[0004] However, the aforementioned workbench has the following shortcomings when in use: In the patent search, the lower end of the pressure gauge is first placed into the embedding hole, and then the clamping ring is fixed to the pressure gauge by inserting the fitting post into the fitting groove. Firstly, because the two clamping rings are not close enough and their size is larger than the size of the connecting pipe at the lower end of the pressure gauge, the pressure gauge may tilt and fail to connect successfully with the pressure head, which cannot guarantee the smooth progress of metrological verification. Secondly, the stability of the pressure gauge being fixed by the two clamping rings cannot be guaranteed by using only the fitting post and the fitting groove. As a result, the pressure gauge is prone to shaking during testing, which affects the accuracy of the test. Utility Model Content

[0005] The purpose of this invention is to provide a pressure gauge calibration workbench to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure gauge calibration workbench, comprising:

[0007] The main body of the workbench is equipped with a metrological verification device, and the metrological verification device is provided with multiple pressure ports at equal intervals.

[0008] Two electric cylinders are mounted on the main body of the workbench. The telescopic ends of the two electric cylinders are connected to fixed seats. A limit plate is connected between the two fixed seats. The limit plate is located directly above the metrological verification device. Multiple first limit components are nested at equal intervals inside the limit plate.

[0009] A fixing plate is located below the limiting plate. Both ends of the fixing plate are connected to two fixing seats. Multiple second limiting components are nested inside the fixing plate at equal intervals.

[0010] Preferably, the number of the first limiting component and the second limiting component are the same as the number of pressure ports, and the positions of the first limiting component and the second limiting component correspond to the positions of the pressure ports.

[0011] Preferably, the limiting plate has a groove corresponding to the position of each of the first limiting components, and the groove extends through the upper and lower sides of the limiting plate;

[0012] The first limiting component is nested in the groove. The first limiting component includes symmetrical clamps. Both clamps are slidably nested in the groove. A spring is connected to the side of the two clamps that is away from each other. The end of the spring away from the clamp is connected to the inner wall of the groove. Under the push of the spring, the two clamps squeeze and limit the pressure gauge housing.

[0013] Preferably, the clamping plate includes a vertical part, and an inclined part is fixed to the upper end of the vertical part. The inclined parts on the two clamping plates form an inverted "V" structure. A V-shaped groove is provided on the side of the vertical part and the inclined part away from the spring. A stop block is fixed to the bottom end of the vertical part. The spring is connected to the vertical part. The vertical part is slidably nested in the groove. The two inclined parts on the two clamping plates with the inverted "V" structure facilitate the insertion of the pressure gauge housing. The V-shaped groove facilitates the compression and limiting of the pressure gauge housing.

[0014] Preferably, the fixing plate has through holes at the positions of each of the second limiting components, and the through holes penetrate the upper and lower sides of the fixing plate;

[0015] The second limiting component is nested in the through hole. The second limiting component includes multiple squeezing blocks, which are arranged in a funnel shape. A buffer is connected between the squeezing blocks and the inner wall of the through hole. The connector of the pressure gauge passes through the center of the second limiting component. Each buffer pushes the squeezing blocks to squeeze the connector of the pressure gauge, thereby fixing the connector of the pressure gauge.

[0016] Preferably, the extrusion block is made of rubber.

[0017] Preferably, the two electric cylinders are located on the left and right sides of the metering and verification device, respectively. The cylinder bodies of the two electric cylinders are installed below the table surface of the main body of the workbench, and the telescopic ends of the two electric cylinders slide through the table surface of the main body of the workbench and are connected to the two fixed seats.

[0018] Preferably, the workbench body is equipped with a controller, which is electrically connected to the two electric cylinders. The controller controls the operation of the two electric cylinders, thereby controlling the lifting and lowering of the limit plate and the fixed plate.

[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0020] By nesting multiple first limiting components at equal intervals within the limiting plate and multiple second limiting components at equal intervals within the fixing plate, the first and second limiting components work together to limit and fix the pressure gauge to be calibrated, thereby improving the stability of the pressure gauge fixation and avoiding the problem that the pressure gauge may tip over or tilt and fail to connect with the pressure port, thus ensuring the smooth progress of metrological calibration. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a schematic diagram of the limiting plate structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the clamping plate structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the second limiting component structure of this utility model;

[0028] Figure 7 This is a schematic diagram showing the connection between the extrusion block and the buffer of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Workbench body; 2. Metering and calibration device; 3. Pressure port; 4. Fixing base; 5. Limiting plate; 6. Fixing plate; 7. Groove; 8. Clamping plate; 9. Vertical part; 10. Inclined part; 11. Spring; 12. V-groove; 13. Stop block; 14. Through hole; 15. Extrusion block; 16. Buffer; 17. Controller; 18. Electric cylinder. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides, for example Figures 1 to 7 The pressure gauge calibration workbench shown includes:

[0033] The main body of the workbench 1 is equipped with a metrological verification device 2, and multiple pressure ports 3 are equally spaced on the metrological verification device 2.

[0034] Two electric cylinders 18 are mounted on the main body 1 of the workbench. The telescopic ends of the two electric cylinders 18 are connected to fixed seats 4. A limit plate 5 is connected between the two fixed seats 4. The limit plate 5 is located directly above the measuring and verification device 2. Multiple first limit components are nested at equal intervals inside the limit plate 5. Grooves 7 are provided on the limit plate 5 corresponding to the positions of each first limit component. The grooves 7 penetrate through the upper and lower sides of the limit plate 5.

[0035] The first limiting component is nested in the groove 7. The first limiting component includes symmetrical clamping plates 8. Both clamping plates 8 are slidably nested in the groove 7. The side of the two clamping plates 8 that is far away from each other is connected to a spring 11. The end of the spring 11 that is far away from the clamping plate 8 is connected to the inner wall of the groove 7. Under the elastic force of the spring 11, the two clamping plates 8 squeeze and limit the pressure gauge housing.

[0036] The fixing plate 6 is located below the limiting plate 5. Both ends of the fixing plate 6 are connected to two fixing seats 4. Multiple second limiting components are nested in the fixing plate 6 at equal intervals. Through holes 14 are opened on the fixing plate 6 corresponding to the positions of each second limiting component. The through holes 14 penetrate the upper and lower sides of the fixing plate 6.

[0037] The second limiting component is nested within the through hole 14. The second limiting component includes multiple extrusion blocks 15, which are arranged in a funnel shape. A buffer 16 is connected between the extrusion blocks 15 and the inner wall of the through hole 14. The connector of the pressure gauge passes through the center of the second limiting component. Each buffer 16 pushes the extrusion blocks 15 to squeeze the connector of the pressure gauge, thereby fixing the connector of the pressure gauge.

[0038] The number of the first limiting component and the second limiting component are the same as the number of pressure port 3, and the positions of the first limiting component and the second limiting component correspond to the positions of the pressure port 3.

[0039] The clamping plate 8 includes a vertical part 9, and an inclined part 10 is fixed at the upper end of the vertical part 9. The inclined parts 10 on the two clamping plates 8 are in the shape of an inverted "V". A V-shaped groove 12 is provided on the side of the vertical part 9 and the inclined part 10 away from the spring 11. A stop block 13 is fixed at the bottom end of the vertical part 9. The spring 11 is connected to the vertical part 9. The vertical part 9 is slidably nested in the groove 7. The two inclined parts 10 on the two clamping plates 8, which are in the shape of an inverted "V", facilitate the insertion of the pressure gauge housing. The V-shaped groove 12 facilitates the compression and limiting of the pressure gauge housing.

[0040] The extrusion block 15 is made of rubber.

[0041] Two electric cylinders 18 are located on the left and right sides of the measuring and verification device 2, respectively. The cylinder bodies of the two electric cylinders 18 are installed below the table surface of the workbench body 1. The telescopic ends of the two electric cylinders 18 slide through the table surface of the workbench body 1 and are connected to the two fixed seats 4.

[0042] A controller 17 is installed on the main body 1 of the workbench. The controller 17 is electrically connected to two electric cylinders 18. The controller 17 controls the operation of the two electric cylinders 18, thereby controlling the lifting and lowering of the limit plate 5 and the fixed plate 6.

[0043] In this invention, when installing a pressure gauge requiring calibration, the connector of the pressure gauge is sequentially inserted through the first limiting component on the limiting plate 5 and the second limiting component on the fixing plate 6. The pressure gauge housing presses against the two clamping plates 8 on the first limiting component, causing the spring 11 to be compressed. Insertion stops when the pressure gauge housing contacts the stop block 13 on the clamping plate 8. The two inclined portions 10 on the clamping plates 8, which have an inverted "V" structure, facilitate the insertion of the pressure gauge housing. The V-groove 12 on the clamping plates 8 facilitates the compression and limiting of the pressure gauge housing. Simultaneously, after the pressure gauge connector penetrates the second limiting component, the pressure gauge... The head side wall presses against the pressing block 15 on the second limiting component. Under the elastic force of the buffer 16, the pressing block 15 on the second limiting component presses against the connector of the pressure gauge. Then, the two electric cylinders 18 work to drive the fixed seat 4 to move down. The movement of the fixed seat 4 drives the limiting plate 5 and the fixed plate 6 to move down, thereby causing the pressure gauge to move down. This allows the bottom end of the connector of the pressure gauge to connect with the pressure port 3 on the metrological verification device 2. The second limiting component cooperates with the first limiting component to limit and fix the pressure gauge, ensuring the stability of the pressure gauge and preventing the pressure gauge from tilting or skewing, thus ensuring the smooth progress of the metrological verification.

[0044] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pressure gauge calibration workbench, characterized in that, include: The main body of the workbench (1) is provided with a metrological verification device (2), and the metrological verification device (2) is provided with multiple pressure ports (3) at equal intervals. Two electric cylinders (18) are installed on the main body of the workbench (1). The telescopic ends of the two electric cylinders (18) are connected to fixed seats (4). A limit plate (5) is connected between the two fixed seats (4). The limit plate (5) is located directly above the metrological verification device (2). Multiple first limit components are nested in the limit plate (5) at equal intervals. A fixing plate (6) is located below the limiting plate (5). Both ends of the fixing plate (6) are connected to two fixing seats (4). Multiple second limiting components are nested in the fixing plate (6) at equal intervals.

2. The pressure gauge calibration workbench according to claim 1, characterized in that: The number of the first limiting component and the second limiting component are the same as the number of pressure ports (3), and the positions of the first limiting component and the second limiting component correspond to the positions of the pressure ports (3).

3. The pressure gauge calibration workbench according to claim 1, characterized in that: The limiting plate (5) has grooves (7) corresponding to the positions of each of the first limiting components, and the grooves (7) penetrate the upper and lower sides of the limiting plate (5); The first limiting component is nested in the groove (7). The first limiting component includes symmetrical clamps (8). Both clamps (8) are slidably nested in the groove (7). A spring (11) is connected to the side of the two clamps (8) that is far away from each other. The end of the spring (11) that is far away from the clamp (8) is connected to the inner wall of the groove (7).

4. A pressure gauge calibration workbench according to claim 3, characterized in that: The clamp (8) includes a vertical part (9), and an inclined part (10) is fixed at the upper end of the vertical part (9). The inclined parts (10) on the two clamps (8) are in the shape of an inverted "V". A V-shaped groove (12) is provided on the side of the vertical part (9) and the inclined part (10) away from the spring (11). A stop block (13) is fixed at the bottom end of the vertical part (9). The spring (11) is connected to the vertical part (9). The vertical part (9) is slidably nested in the groove (7).

5. A pressure gauge calibration workbench according to claim 1, characterized in that: The fixing plate (6) has through holes (14) at the positions of each of the second limiting components, and the through holes (14) penetrate the upper and lower sides of the fixing plate (6); The second limiting component is nested in the through hole (14). The second limiting component includes a plurality of extrusion blocks (15), which are arranged in a funnel shape. A buffer (16) is connected between the extrusion blocks (15) and the inner wall of the through hole (14).

6. A pressure gauge calibration workbench according to claim 5, characterized in that: The extrusion block (15) is made of rubber.

7. A pressure gauge calibration workbench according to claim 1, characterized in that: The two electric cylinders (18) are located on the left and right sides of the measuring and verification device (2), respectively. The cylinder bodies of the two electric cylinders (18) are installed below the table surface of the workbench body (1). The telescopic ends of the two electric cylinders (18) slide through the table surface of the workbench body (1) and are connected to the two fixed seats (4).

8. A pressure gauge calibration workbench according to claim 1, characterized in that: A controller (17) is provided on the main body (1) of the workbench, and the controller (17) is electrically connected to the two electric cylinders (18).

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