Pressure sensor calibrating device

Abstract

The invention discloses a pressure sensor calibrating device which comprises a machining table, a pair of supporting frames are installed on the machining table, a fixed top plate is arranged on the supporting frames, a compression type booster pump and a pair of air pressure type pressure detection structures are installed on the fixed top plate, and an equipment installation groove is formed in the machining table. A driving type telescopic multi-station replacement structure is mounted at the equipment mounting groove; the invention relates to the technical field of pressure sensor detection equipment, and has the beneficial effects that the problems that the existing pressure sensor detection equipment can only detect a single sensor at one time, the requirement of large-batch detection is difficult to meet, errors are easily introduced by manual operation, the accuracy of a detection result is influenced, the detection efficiency is low, and the detection cost is high are solved; the problems that manual detection and adjustment are needed, the detection precision is limited, the requirement for high-precision pressure sensor verification cannot be met, the accuracy and reliability of the verification result are affected, and the overall detection efficiency is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure sensor detection equipment, and specifically relates to a pressure sensor calibration device. Background Art

[0002] In industrial production, scientific research experiments, and many fields that require precise pressure measurement, the pressure sensor, as a key detection component, plays a crucial role. It can convert the measured pressure signal into a measurable electrical signal, providing a basis for subsequent data processing and analysis. Its measurement accuracy and stability directly affect the operation effect of the entire system or equipment.

[0003] However, with the continuous expansion of the application scenarios of pressure sensors and the increasing requirements for their performance, it has become crucial to ensure the accuracy of the measurement results of pressure sensors. This requires regular calibration of pressure sensors to verify whether their measurement accuracy meets the specified standards and whether there are deviations or faults.

[0004] Existing calibration devices can usually only calibrate a single sensor at a time, and manual adjustment and replacement of the tested parts are required, which is time-consuming and laborious, and difficult to meet the needs of large-scale calibration. Moreover, manual operation is prone to introducing errors, such as uneven pressure application and unstable clamping, which affect the accuracy of the calibration results. The structure is complex and the operation is cumbersome, resulting in low calibration efficiency, increasing the labor and time costs, and manual detection and adjustment are required, with limited detection accuracy, unable to meet the needs of high-precision pressure sensor calibration, affecting the accuracy and reliability of the calibration results, lacking automatic adjustment and switching functions, unable to achieve multi-station continuous detection, and affecting the overall detection efficiency.

[0005] Based on the problems existing in the above-mentioned prior art, it is of great practical significance to develop a pressure sensor calibration device with a reasonable structure, simple operation, high detection accuracy, capable of adapting to multi-station simultaneous calibration and convenient clamping. Summary of the Invention

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A pressure sensor calibration device, comprising: a processing table, on which a pair of support frames are installed, on the pair of support frames, a fixed top plate is provided, on the fixed top plate, a compression type supercharger and a pair of pneumatic pressure detection structures are installed, on the processing table, an equipment installation groove is opened, and at the equipment installation groove, a driving type telescopic multi-station replacement structure is installed.

[0007] Each of the pair of pneumatic pressure detection structures includes: a supercharging air pipe, a connecting pipe, a switching valve, a fixed sleeve, a pneumatic telescopic pipe, a detection pressing plate, a pressure display device, and a pressure relief valve.

[0008] One end of the supercharging air pipe is installed on the compression supercharging pump, the connecting pipe is embedded in the fixed top plate, the other end of the supercharging air pipe is installed on the connecting pipe, the switch valve is installed on the lower wall surface of the fixed top plate and connected to the connecting pipe, the fixed sleeve is installed on the switch valve, the pneumatic telescopic pipe is hermetically and movably embedded inside the fixed sleeve, the detection pressing plate is installed at the bottom end position of the pneumatic telescopic pipe, the pressure display device is installed on the outer wall surface of the fixed sleeve, and the pressure relief valve is embedded on the left wall surface of the fixed sleeve.

[0009] Preferably, a dust filter net is installed on the compression supercharging pump.

[0010] Preferably, exhaust valves are arranged at the tops of a pair of connecting pipes.

[0011] Preferably, support legs are installed on the processing table, and the support legs are fixed by fixing bolts. Reinforcing rods are also installed on the support legs.

[0012] Preferably, the driven telescopic multi-station replacement structure includes: a first mounting plate, a pair of second mounting plates, a servo motor, a driving sprocket, a pair of rotating support shafts, a pair of transmission sprockets, a transmission chain, a pair of combined support rods, a pair of rotating fixing seats, a pair of mounting sleeves, two pairs of hydraulic push rods, a number of quick clamping components, a pair of detection connection bases, a pair of pressure-contact type positioning detection components, a pair of fixing rods, a pair of infrared reflection sensors, and a number of positioning reflection sheets;

[0013] The first mounting plate is installed at the middle position inside the equipment installation slot, a pair of second mounting plates are installed on both sides of the first mounting plate, the servo motor is installed at the rear position on the first mounting plate and the output end penetrates downward and extends out, the driving sprocket is installed on the output end of the servo motor, a pair of rotating support shafts are movably embedded on a pair of second mounting plates, a pair of transmission sprockets are installed on a pair of rotating support shafts, the transmission chain is engaged with the driving sprocket and a pair of transmission sprockets, a pair of combined support rods are embedded on a pair of rotating support shafts, a pair of rotating fixing seats are installed at the top end positions of a pair of combined support rods, a pair of mounting sleeves are installed on the outer wall surfaces of a pair of rotating support shafts, two pairs of hydraulic push rods are installed on both sides of the upper wall surface of a pair of mounting sleeves and the output ends are installed on the rotating fixing seats, a number of quick clamping components are installed on the rotating fixing seats, a pair of detection connection bases are installed at the rear positions of a pair of rotating support shafts, a pair of pressure-contact type positioning detection components are installed on a pair of second mounting plates and connected to a pair of rotating fixing seats, a pair of fixing rods are installed at the rear positions of a pair of detection connection bases, a pair of infrared reflection sensors are installed at the top end positions of a pair of fixing rods, and a number of positioning reflection sheets are arranged on the outer wall surfaces of a pair of rotating fixing seats.

[0014] Preferably, a tensioning wheel is arranged at the middle position of the transmission chain on the first mounting plate.

[0015] Preferably, a protective net is arranged at the middle position between the first mounting plate and a pair of second mounting plates.

[0016] Preferably, a pair of combined support rods are provided with guide clamping rods.

[0017] Preferably, each of the quick clamping assemblies includes: a mounting groove, two pairs of limiting rods, a pair of arc-shaped clamping plates, a pair of fixing blocks, and a spring compression rod;

[0018] The mounting groove is formed on the rotary fixing seat. Two pairs of limiting rods are inserted through and embedded on the outer wall surface of the mounting groove. A pair of arc-shaped clamping plates are mounted on the two pairs of limiting rods and located inside the mounting groove. A pair of fixing blocks are respectively mounted on the inner wall surface of the mounting groove and the arc-shaped clamping plates. The spring compression rod is mounted on one of the fixing blocks.

[0019] Preferably, each of the pair of pressure-contact type positioning and detecting assemblies includes: a pair of fixing plates, a sliding support rod, a support slider, a compression spring, a contact sensor, a connecting contact piece, two pairs of mounting rods, a support slide rail, a first connecting hinge seat, a connecting rod, a second connecting hinge seat, a connecting slider, a fixed sleeve, a mounting cavity, a damping support spring, and a limiting support rod;

[0020] A pair of fixing plates are mounted on the second mounting plate. The sliding support rod is mounted at the middle position between the pair of fixing plates. The support slider is movably mounted on the sliding support rod. The compression spring is arranged at the middle position between the fixing plate and the support slider. The contact sensor is mounted on one of the pair of fixing plates. The connecting contact piece is mounted on the support slider. Two pairs of mounting rods are mounted on the lower wall surface of the rotary fixing seat. The support slide rail is mounted at the lower ends of the two pairs of mounting rods. The first connecting hinge seat is mounted on the support slider. The lower end of the connecting rod is movably mounted on the first connecting hinge seat. The connecting slider is semi-embeddedly mounted on the support slide rail. The second connecting hinge seat is mounted on the lower wall surface of the connecting slider. The upper end of the connecting rod is movably mounted on the second connecting hinge seat. The fixed sleeve is mounted behind the rotary support shaft. The mounting cavity is formed inside the fixed sleeve. The damping support spring is arranged inside the mounting cavity. The lower end of the limiting support rod is movably inserted into the mounting cavity.

[0021] Beneficial effects

[0022] The present invention provides a pressure sensor calibration device, which has the following beneficial effects: This technical solution adopts a working mode that combines a pneumatic pressure detection structure with a driven telescopic multi-station replacement structure. By setting the driven telescopic multi-station replacement structure, the device can calibrate multiple pressure sensors simultaneously, achieving rapid switching and continuous calibration of multiple stations, greatly shortening the calibration time of a single pressure sensor and batch pressure sensors, improving the overall calibration efficiency, meeting the requirements in large-scale production or batch detection scenarios, reducing labor and time costs. The device uses a compression type booster pump and a pair of pneumatic pressure detection structures, which can accurately control the pressure applied to the pressure sensor and display the pressure value accurately and in real time through a pressure display device. At the same time, a pressure relief valve is set on the fixed sleeve to release excess pressure in a timely manner, ensuring the stability and accuracy of the pressure, and enabling two-way pressure detection of forward pressurization and reverse pressure relief, thereby improving the calibration accuracy of the pressure sensor and ensuring the reliability of the calibration results. The driven telescopic multi-station replacement structure is adopted and combined with a sensing monitoring and control structure. Through the coordinated control of a servo motor, sprocket drive, and hydraulic push rod, automatic switching and positioning of multiple sensors are achieved, greatly improving the detection efficiency. In cooperation with a quick clamping assembly, and through the signal linkage control of multiple control sensors, the switching and positioning of the pressure sensor are ensured to be accurate, different specifications of sensors can be quickly fixed, manual intervention is reduced, and it is applicable to batch detection requirements. Different-shaped and -sized pressure sensors can be quickly and stably fixed on the rotating fixing seat without complex operation steps, reducing the preparation time for replacing the pressure sensor and improving the work efficiency, solving the problems that existing pressure sensor calibration equipment can usually only calibrate a single sensor at a time, and requires manual adjustment and replacement of the test piece, which is time-consuming and laborious, difficult to meet the requirements of large-scale calibration, and manual operation is prone to introducing errors, such as uneven pressure application and unstable clamping, affecting the accuracy of the calibration results, with complex structure and cumbersome operation, resulting in low calibration efficiency, increasing labor and time costs, and requiring manual detection and adjustment, with limited detection accuracy, unable to meet the requirements of high-precision pressure sensor calibration, affecting the accuracy and reliability of the calibration results, lacking automatic adjustment and switching functions, and unable to achieve multi-station continuous detection, affecting the overall detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. 6 is a front perspective structural schematic diagram of a pressure sensor calibration device according to the present invention.

[0024] Figure 2 FIG. 7 is a rear perspective structural schematic diagram of a pressure sensor calibration device according to the present invention.

[0025] Figure 3 FIG. 8 is a bottom perspective structural schematic diagram of a pressure sensor calibration device according to the present invention.

[0026] Figure 4 This is a schematic diagram of the partially enlarged structure of location A of a pressure sensor calibration device described in the present invention.

[0027] Figure 5 This is a schematic diagram of the main structure of a pressure sensor calibration device described in the present invention.

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of a rotating fixing seat of a pressure sensor calibration device described in the present invention when viewed from above.

[0029] Figure 7 This is a schematic diagram of a three-dimensional cross-sectional structure of a fixed sleeve of a pressure sensor calibration device described in the present invention.

[0030] In the figure: 1-processing table; 2-support frame; 3-fixed top plate; 4-compression booster pump; 5-equipment mounting slot; 6-boosting air pipe; 7-connecting pipe; 8-on / off valve; 9-fixed sleeve; 10-air pressure expansion pipe; 11-detection pressure plate; 12-pressure display device; 13-pressure relief valve; 14-dust filter; 15-exhaust valve; 16-support leg; 17-fixing bolt; 18-reinforcement rod; 19-first mounting plate; 20-second mounting plate; 21-servo motor; 22-drive sprocket; 23-rotating support shaft; 24-drive sprocket; 25-drive chain; 26-combined support rod; 27-rotating fixed seat; 28-mounting sleeve; 29-hydraulic push rod; 30-Detection connection base; 31-Fixing rod; 32-Infrared reflection sensor; 33-Positioning reflector; 34-Tensioning wheel; 35-Protective net; 36-Guide card rod; 37-Mounting slot; 38-Limiting rod; 39-Arc splint; 40-Fixed block; 41-Spring compression rod; 42-Fixed plate; 43-Sliding support rod; 44-Support slider; 45-Compression spring; 46-Contact sensor; 47-Connecting contact piece; 48-Mounting rod; 49-Support slide rail; 50-First connecting hinge; 51-Connecting rod; 52-Second connecting hinge; 53-Connecting slider; 54-Fixed sleeve; 55-Mounting cavity; 56-Damaging support spring; 57-Limiting support rod. DETAILED DESCRIPTION

[0031] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0032] This solution provides a pressure sensor calibration device with a fully automated testing process, which greatly improves efficiency. It adopts multi-station automatic switching and is equipped with a pneumatic adjustment structure that can accurately control pressure to ensure detection reliability. It can also use a bidirectional detection mode, adaptive fast clamping, and is compatible with various specifications of sensors. It also has multiple safety protections to ensure stable operation of the equipment.

[0033] Embodiment: Please refer to Figure 1-7 , a pressure sensor calibration device, comprising: a processing table 1, on which a pair of support frames 2 are installed, on the pair of support frames 2 there is a fixed top plate 3, on the fixed top plate 3 there are installed a compression type supercharger pump 4 and a pair of pneumatic pressure detection structures, on the processing table 1 there is an equipment installation groove 5, and at the equipment installation groove 5 there is installed a drive type telescopic multi-station replacement structure;

[0034] It should be noted that when calibrating the pressure sensor, it is transferred by a manipulator arranged at the middle position of the production line, and the pressure sensor to be calibrated is inserted into the drive type telescopic multi-station replacement structure installed at the equipment installation groove 5 to realize the installation and fixation of the workpiece in the calibration process. It drives the pressure sensor to communicate with the detection equipment through its telescopic rotation. When the equipment moves and connects, the precise movement of the equipment is realized through the infrared positioning structure, and in cooperation with the pneumatic pressure detection structure installed on the fixed top plate 3, the precise pressure calibration of different pressures in a segmented manner is carried out by using the adjustable air pressure. The measurement data of different pressure points are obtained by pressing with different MPa air pressures. When the set pressure is applied, the pressure is maintained unchanged to calibrate the measurement stability of the pressure sensor, and during pressure relief, it is monitored synchronously in the reverse direction to realize the multi-directional precise detection and measurement of the pressure sensor. The pneumatic pressure detection structure provides an accurate and stable external pressure, effectively preventing errors caused by manual operation, and the air pressure adjustment has high precision and fast speed, and can realize rapid pressure calibration and measurement;

[0035] Both of the pair of pneumatic pressure detection structures include: a supercharging air pipe 6, a connecting pipe 7, a switch valve 8, a fixed sleeve 9, a pneumatic telescopic pipe 10, a detection pressing plate 11, a pressure display device 12 and a pressure relief valve 13;

[0036] One end of the supercharging air pipe 6 is installed on the compression type supercharger pump 4, the connecting pipe 7 is embedded on the fixed top plate 3, the other end of the supercharging air pipe 6 is installed on the connecting pipe 7, the switch valve 8 is installed on the lower wall surface of the fixed top plate 3 and is connected to the connecting pipe 7, the fixed sleeve 9 is installed on the switch valve 8, the pneumatic telescopic pipe 10 is hermetically and movably embedded inside the fixed sleeve 9, the detection pressing plate 11 is installed at the bottom end position of the pneumatic telescopic pipe 10, the pressure display device 12 is installed on the outer wall surface of the fixed sleeve 9, and the pressure relief valve 13 is embedded on the left wall surface of the fixed sleeve 9.

[0037] It should be noted that when using the pneumatic pressure detection structure, the compression type booster pump 4 installed on the fixed top plate 3 compresses air and transports it into the connecting pipe 7 through the booster air pipe 6 to achieve the transportation and injection of high-pressure gas. The controller controls the opening of the switching valve 8 to inject it into the fixed sleeve 9. The pressure inside the fixed sleeve 9 is increased by the high-pressure gas, which drives the pneumatic telescopic pipe 10 to extend downward. When the lower end of the pneumatic telescopic pipe 10 does not press against the pressure sensor, the internal pressure of the fixed sleeve 9 is the same as the external atmospheric pressure. When the lower end of the pneumatic telescopic pipe 10 continues to extend downward and drives the detection pressing plate 11 to press against the pressure sensor, as the compression type booster pump 4 continuously injects compressed air, the internal air pressure in the fixed sleeve 9 gradually increases, and the air pressure data is displayed through the pressure display device 12. The internal pressure of the fixed sleeve 9 is increased and precisely regulated in cooperation with the pressure relief valve 13 to perform the downward calibration at different detection cut-off points. According to the detection requirements, different air pressures inside the fixed sleeve 9 are controlled, so that the corresponding pressure is output outward through the pneumatic telescopic pipe 10 and acts on the pressure sensor to achieve the detection of multi-stage positioning pressure, thereby realizing the precise pressure calibration of the pressure sensor. After the pressurized detection is completed, the internal pressure of the fixed sleeve 9 is relieved through the exhaust valve 15. During the pressure relief, the pressure relief valve 13 is synchronously cooperated to perform a slow pressure relief, so that the internal pressure gradually decreases in stages to the size of the detection cut-off point pressure, and the reverse pressure reduction calibration is performed to further ensure the calibration accuracy of the pressure sensor and realize the full-automatic pneumatic pressure calibration test.

[0038] In the specific implementation process, further, a dust filter net 14 is installed on the compression type booster pump 4.

[0039] In the specific implementation process, further, an exhaust valve 15 is provided at the top of a pair of connecting pipes 7.

[0040] In the specific implementation process, further, support legs 16 are installed on the processing table 1, and the support legs 16 are fixed through fixing bolts 17. Reinforcing rods 18 are also installed on the support legs 16.

[0041] In the specific implementation process, further, the driven telescopic multi-station replacement structure includes: a first mounting plate 19, a pair of second mounting plates 20, a servo motor 21, a driving sprocket 22, a pair of rotating support shafts 23, a pair of transmission sprockets 24, a transmission chain 25, a pair of combined support rods 26, a pair of rotating fixed seats 27, a pair of mounting sleeves 28, two pairs of hydraulic push rods 29, a number of quick clamping components, a pair of detection connection bases 30, a pair of pressure contact type positioning detection components, a pair of fixed rods 31, a pair of infrared reflection sensors 32, and a number of positioning reflection sheets 33;

[0042] The first mounting plate 19 is installed at the middle position inside the equipment mounting groove 5. A pair of second mounting plates 20 are installed on both sides of the first mounting plate 19. The servo motor 21 is installed at the rear position on the first mounting plate 19 and its output end penetrates downward and extends out. The driving sprocket 22 is installed on the output end of the servo motor 21. A pair of rotating support shafts 23 are movably installed on a pair of second mounting plates 20. A pair of driving sprockets 24 are installed on a pair of rotating support shafts 23. The transmission chain 25 is engaged with the driving sprocket 22 and a pair of driving sprockets 24. A pair of combined support rods 26 are installed on a pair of rotating support shafts 23. A pair of rotating fixing seats 27 are installed at the top positions of a pair of combined support rods 26. A pair of mounting sleeves 28 are installed on the outer wall surfaces of a pair of rotating support shafts 23. Two pairs of hydraulic push rods 29 are installed on both sides of the upper wall surfaces of a pair of mounting sleeves 28 and their output ends are installed on the rotating fixing seats 27. A number of quick clamping components are installed on the rotating fixing seats 27. A pair of detection connection bases 30 are installed at the rear positions of a pair of rotating support shafts 23. A pair of pressure-contact type positioning detection components are installed on a pair of second mounting plates 20 and are connected to a pair of rotating fixing seats 27. A pair of fixing rods 31 are installed at the rear positions of a pair of detection connection bases 30. A pair of infrared reflection sensors 32 are installed at the top positions of a pair of fixing rods 31. A number of positioning reflection sheets 33 are arranged on the outer side wall surfaces of a pair of rotating fixing seats 27.

[0043] It should be noted that when using the driven telescopic multi-station replacement structure, the manipulator inserts the detected pressure sensor into the quick clamping assembly installed on the rotating fixed seat 27 for installation and fixation by clamping. After the clamping is completed, the hydraulic push rod 29 installed on the mounting sleeve 28 starts the output end to extend upward, thereby driving the rotating fixed seat 27 and the combined support rod 26 to move upward to lift the pressure sensor upward, so that the upper end of the pressure sensor is higher than the height of the detection connection base 30, which is convenient for workpiece installation. The servo motor 21 installed on the first mounting plate 19 starts to drive the drive sprocket 22 to rotate, and the drive sprocket 22 drives a pair of drive sprockets 24 to rotate through the transmission chain 25, so that a pair of rotating support shafts 23 rotate on a pair of second mounting plates 20. When the rotating fixed seat 27 rotates, the positioning reflector 33 on its outer wall rotates accordingly; at the same time, the infrared reflection sensor 3 on the fixed rod 31 2 continuously emits infrared signals. When the pressure sensor rotates and moves above the detection connection base 30, the infrared signal emitted by the infrared reflection sensor 32 is reflected back to its receiving end through the positioning reflector 33, thereby sending a control electrical signal in conjunction with the servo motor 21 to stop rotating and make the pressure sensor stay at the lower end of the detection connection base. After the rotation is completed, the output end of the hydraulic push rod 29 contracts, driving the pressure sensor to connect with the contacts on the detection connection base 30 to achieve communication. The detection connection base 30 is provided with multiple pairs of contacts for adapting to pressure sensors of different sizes and models. When the hydraulic push rod 29 drives the pressure sensor to move downward, the pressure-touch positioning detection component is used to monitor and control the lifting height, realize lifting control stop, and prevent the stable clamping of the pressure sensor from being affected by the transitional descent. After the pressure sensor is connected, it cooperates with the pneumatic pressure detection structure to perform pneumatic multi-stage pressure calibration operation to realize automatic positioning detection and loading.

[0044] In a specific implementation process, further, a tensioning wheel 34 is provided at the middle position of the transmission chain 25 located on the first mounting plate 19 .

[0045] In the specific implementation process, further, a protective net 35 is provided between the first mounting plate 19 and the pair of second mounting plates 20 .

[0046] In the specific implementation process, further, a guide clamping rod 36 is installed on the pair of combined support rods 26.

[0047] In the specific implementation process, further, the quick clamping assembly includes: a mounting slot 37, two pairs of limit rods 38, a pair of arc-shaped clamping plates 39, a pair of fixing blocks 40 and a spring compression rod 41;

[0048] The installation groove 37 is formed on the rotary fixing base 27. Two pairs of limiting rods 38 are inserted through and installed on the outer wall surface of the installation groove 37. A pair of arc-shaped clamping plates 39 are installed on the two pairs of limiting rods 38 and located inside the installation groove 37. A pair of fixing blocks 40 are respectively installed on the inner wall surface of the installation groove 37 and the arc-shaped clamping plate 39. The spring compression rod 41 is installed on one of the fixing blocks 40.

[0049] It should be noted that when using the quick clamping assembly, the manipulator inserts the pressure sensor to be calibrated into the installation groove 37 formed on the rotary fixing base 27. When inserting, the arc-shaped clamping plate 39 moves to both sides, and at the same time, the spring compression rod 41 installed on the fixing block 40 is compressed. At the same time, the deformation elastic force quickly and stably clamps the pressure sensor. At the same time, the limiting rod 38 is inserted and installed on the outer wall of the installation groove 37 to achieve the guiding function. Through the deformation elastic force fixation of the high-strength spring, the device can be applied to pressure sensors of different sizes, and cooperate with the detection connection base 30 with multiple contacts to achieve the adaptation and assembly of multiple specifications and models, ensuring the clamping accuracy and clamping stability.

[0050] In the specific implementation process, further, each of the pair of pressure contact type positioning and detection components includes: a pair of fixing plates 42, sliding support rods 43, support sliders 44, compression springs 45, contact sensors 46, connection contact pieces 47, two pairs of mounting rods 48, support slide rails 49, first connecting hinge seats 50, connecting rods 51, second connecting hinge seats 52, connection sliders 53, fixed sleeves 54, mounting cavities 55, damping support springs 56, and limiting support rods 57;

[0051] A pair of fixing plates 42 are installed on the second mounting plate 20. The sliding support rod 43 is installed in the middle position between the pair of fixing plates 42. The support slider 44 is movably installed on the sliding support rod 43. The compression spring 45 is arranged in the middle position between the fixing plate 42 and the support slider 44. The contact sensor 46 is installed on one of the pair of fixing plates 42. The connection contact piece 47 is installed on the support slider 44. Two pairs of mounting rods 48 are installed on the lower wall surface of the rotary fixing base 27. The support slide rail 49 is installed at the lower end position of the two pairs of mounting rods 48. The first connecting hinge seat 50 is installed on the support slider 44. The lower end of the connecting rod 51 is movably installed on the first connecting hinge seat 50. The connection slider 53 is semi-inserted and installed on the support slide rail 49. The second connecting hinge seat 52 is installed on the lower wall surface of the connection slider 53. The upper end of the connecting rod 51 is movably installed on the second connecting hinge seat 52. The fixed sleeve 54 is installed behind the rotary support shaft 23. The mounting cavity 55 is formed inside the fixed sleeve 54. The damping support spring 56 is arranged inside the mounting cavity 55. The lower end of the limiting support rod 57 is movably inserted into the mounting cavity 55.

[0052] It should be noted that when using the pressure-touch type positioning detection component, the hydraulic push rod 29 drives the rotary fixing base 27 to descend, so that the pressure sensor is assembled and connected to the detection connection base 30 to achieve electrical connection for data verification and transmission. When the rotary fixing base 27 descends, the lower end thereof abuts against the limit support rod 57, causing it to contract into the installation cavity 55 opened inside the fixed sleeve 54. The damping support spring 56 inside the installation cavity 55 provides a reverse support force to prevent the rotary fixing base 27 from moving around, ensuring the precise connection between the lower end of the pressure sensor and the detection connection base 30. At the same time, when the rotary fixing base 27 moves downward, the support slide rail 49 pushes the connection slider 53 downward, and through the transmission of the connecting rod 51, it drives the support slider 44 to move outward along the sliding rod 43. When the communication contact piece 47 on the support slider 44 contacts and communicates with the end point of the contact sensor 46, the hydraulic push rod 29 is controlled to stop descending, thereby realizing the precise combination and communication between the pressure sensor and the detection connection base 30, achieving the assembly of automated equipment and reducing human intervention.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure sensor calibration device, comprising: Processing table (1), characterized in that a pair of support frames (2) are installed on the processing table (1), a fixed top plate (3) is arranged on the pair of support frames (2), a compression type supercharger pump (4) and a pair of pneumatic pressure detection structures are installed on the fixed top plate (3), an equipment installation groove (5) is opened on the processing table (1), and a driving type telescopic multi-station replacement structure is installed at the equipment installation groove (5); Both of the pair of pneumatic pressure detection structures include: a supercharging air pipe (6), a connecting pipe (7), a switching valve (8), a fixed sleeve (9), a pneumatic telescopic pipe (10), a detection pressing plate (11), a pressure display device (12) and a pressure relief valve (13); One end of the supercharging air pipe (6) is installed on the compression type supercharger pump (4), the connecting pipe (7) is embedded on the fixed top plate (3), the other end of the supercharging air pipe (6) is installed on the connecting pipe (7), the switching valve (8) is installed on the lower wall surface of the fixed top plate (3) and is connected to the connecting pipe (7), the fixed sleeve (9) is installed on the switching valve (8), the pneumatic telescopic pipe (10) is hermetically and movably embedded inside the fixed sleeve (9), the detection pressing plate (11) is installed at the bottom end position of the pneumatic telescopic pipe (10), the pressure display device (12) is installed on the outer wall surface of the fixed sleeve (9), and the pressure relief valve (13) is embedded on the left wall surface of the fixed sleeve (9).

2. The pressure sensor calibration device according to claim 1, characterized in that, A dust filter net (14) is installed on the compression type supercharger pump (4).

3. The pressure sensor calibration device according to claim 1, characterized in that, Exhaust valves (15) are arranged at the tops of the pair of connecting pipes (7).

4. A pressure sensor calibration device according to claim 1, characterized in that, Support legs (16) are installed on the processing table (1), and the support legs (16) are fixed by fixing bolts (17). Reinforcing rods (18) are also installed on the support legs (16).

5. The pressure sensor calibration device according to claim 1, characterized in that, The driving type telescopic multi-station replacement structure includes: a first mounting plate (19), a pair of second mounting plates (20), a servo motor (21), a driving sprocket (22), a pair of rotating support shafts (23), a pair of transmission sprockets (24), a transmission chain (25), a pair of combined support rods (26), a pair of rotating fixing seats (27), a pair of mounting sleeves (28), two pairs of hydraulic push rods (29), a number of quick clamping components, a pair of detection connection bases (30), a pair of pressure contact type positioning detection components, a pair of fixing rods (31), a pair of infrared reflection sensors (32) and a number of positioning reflection sheets (33); The first mounting plate (19) is installed at the middle position inside the equipment mounting groove (5). A pair of second mounting plates (20) are installed on both sides of the first mounting plate (19). The servo motor (21) is installed at the rear position on the first mounting plate (19) and its output end penetrates downward and extends out. The driving sprocket (22) is installed on the output end of the servo motor (21). A pair of rotating support shafts (23) are movably embedded on a pair of second mounting plates (20). A pair of transmission sprockets (24) are installed on a pair of rotating support shafts (23). The transmission chain (25) meshes with the driving sprocket (22) and a pair of transmission sprockets (24). A pair of combined support rods (26) are embedded on a pair of rotating support shafts (23). A pair of rotating fixing seats (27) are installed at the top positions of a pair of combined support rods (26). A pair of mounting sleeves (28) are installed on the outer wall surfaces of a pair of rotating support shafts (23). Two pairs of hydraulic push rods (29) are installed on both sides of the upper wall surface of a pair of mounting sleeves (28) and their output ends are installed on the rotating fixing seats (27). A number of quick clamping components are installed on the rotating fixing seats (27). A pair of detection connection bases (30) are installed at the rear positions of a pair of rotating support shafts (23). A pair of pressure-contact type positioning detection components are installed on a pair of second mounting plates (20) and are connected to a pair of rotating fixing seats (27). A pair of fixing rods (31) are installed at the rear positions of a pair of detection connection bases (30). A pair of infrared reflection sensors (32) are installed at the top positions of a pair of fixing rods (31). A number of positioning reflection sheets (33) are arranged on the outer side wall surfaces of a pair of rotating fixing seats (27).

6. The pressure sensor calibration device according to claim 5, wherein, The transmission chain (25) is provided with a tensioning wheel (34) at the middle position of the first mounting plate (19).

7. A pressure sensor calibration device according to claim 5, characterized in that, A protective net (35) is arranged at the middle position between the first mounting plate (19) and a pair of second mounting plates (20).

8. A pressure sensor calibration device according to claim 5, characterized in that, Guide clamping rods (36) are installed on a pair of combined support rods (26).

9. The pressure sensor calibration device according to claim 5, characterized in that, The quick clamping components all include: a mounting groove (37), two pairs of limiting rods (38), a pair of arc-shaped clamping plates (39), a pair of fixing blocks (40), and a spring compression rod (41); The mounting groove (37) is opened on the rotating fixing seat (27). Two pairs of limiting rods (38) are penetrated and embedded on the outer wall surface of the mounting groove (37). A pair of arc-shaped clamping plates (39) are installed on two pairs of limiting rods (38) and are located inside the mounting groove (37). A pair of fixing blocks (40) are respectively installed on the inner wall surface of the mounting groove (37) and the arc-shaped clamping plate (39). The spring compression rod (41) is installed on one fixing block (40).

10. A pressure sensor calibration device according to claim 5, characterized in that, Each of the pair of pressure-contact type positioning detection components includes: a pair of fixing plates (42), a sliding support rod (43), a support slider (44), a compression spring (45), a contact sensor (46), a connecting contact piece (47), two pairs of mounting rods (48), a support slide rail (49), a first connecting hinge seat (50), a connecting rod (51), a second connecting hinge seat (52), a connecting slider (53), a fixed sleeve (54), a mounting cavity (55), a damping support spring (56), and a limiting support rod (57); A pair of fixed plates (42) are installed on the second mounting plate (20), a sliding support rod (43) is installed at the middle position between the pair of fixed plates (42), a support slider (44) is movably installed on the sliding support rod (43), a compression spring (45) is arranged at the middle position between the fixed plate (42) and the support slider (44), a contact sensor (46) is installed on one of the pair of fixed plates (42), a connecting contact piece (47) is installed on the support slider (44), two pairs of mounting rods (48) are installed on the lower wall surface of the rotary fixing seat (27), a support slide rail (49) is installed at the lower ends of the two pairs of mounting rods (48), a first connecting hinge seat (50) is installed on the support slider (44), the lower end of a connecting rod (51) is movably installed on the first connecting hinge seat (50), a connecting slider (53) is semi-embeddedly installed on the support slide rail (49), a second connecting hinge seat (52) is installed on the lower wall surface of the connecting slider (53), the upper end of the connecting rod (51) is movably installed on the second connecting hinge seat (52), a fixed sleeve (54) is installed behind the rotary support shaft (23), an installation cavity (55) is opened inside the fixed sleeve (54), a damping support spring (56) is arranged inside the installation cavity (55), and the lower end of a limiting support rod (57) is movably inserted into the installation cavity (55).

Images