A pressure sensor calibration test device

Abstract

The present invention relates to the technical field of sensor equipment, and discloses a pressure sensor calibration test device, comprising a support platform, a support base plate and a plurality of support legs, symmetrical positioning parts are provided on both sides of the top center position of the support base plate, a mounting seat is provided between the positioning parts and located at the center above the support platform, the mounting seat is provided with a plurality of auxiliary parts, the auxiliary parts are all clamped with a pressure sensor body, a boosting device is provided above the pressure sensor body, and the boosting device is installed on one side of the top of the support platform; the boosting device is provided with a plurality of elastic mechanisms, the elastic mechanism includes a first U-shaped frame, the first U-shaped frame is an inverted U-shaped structure, a left groove and a right groove are provided on both sides of the first U-shaped frame respectively, a back plate is provided on the back of the first U-shaped frame, and a full gear is provided on the inner side of the back plate located below the U groove of the first U-shaped frame. Beneficial effects: increasing the comprehensiveness of detection, and being able to detect multiple pressure sensors at one time.

Description

Technical Field

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

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving many industries such as water conservancy, hydropower, and railway transportation.

[0003] At present, when automatically testing the pressure sensor, only one part of the pressure sensor can be automatically tested through the lifting device. However, due to the errors in the pressure detection data at various places on the pressure sensor and the structural method, it is impossible to test the pressure at different positions of the same pressure sensor, which easily leads to large errors and affects the pressure detection data. At the same time, when performing pressure testing on the pressure sensor, the pressure sensor can only be tested one by one, and multiple pressure sensors cannot be tested at the same time, which increases the labor and process of testing and greatly reduces the efficiency of testing. Summary of the Invention

[0004] The technical task of the present invention is to provide a pressure sensor calibration test device to solve the above problems.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A pressure sensor calibration test device comprises a support platform, a support base and a plurality of support legs. Symmetrical positioning parts are provided on both sides of the top center position of the support base. A mounting seat is provided between the positioning parts and located at the center above the support platform. The mounting seat is provided with a plurality of auxiliary parts. The auxiliary parts are all clamped with a pressure sensor body. A booster device is provided above the pressure sensor body. The booster device is installed on one side of the top of the support platform. The booster device is provided with a plurality of elastic mechanisms. The elastic mechanism includes a first U-shaped frame. The first U-shaped frame is an inverted U-shaped structure. There are respectively provided on both sides of the first U-shaped frame. There are left grooves and right grooves, a back plate is provided on the back of the first U-shaped frame, and a full gear is provided below the inner side of the back plate in the U-groove of the first U-shaped frame, and a first side gear tooth meshing with the full gear is provided on the left side of the full gear located on the left side of the U-groove of the first U-shaped frame. An upper column is provided at the center of the bottom of the first U-shaped frame, a lower column is provided below the upper column, and a second U-shaped frame is provided at the bottom of the lower column. Both sides of the second U-shaped frame are inserted in the left groove and the right groove, and a second side gear tooth meshing with the full gear is provided on the right side of the second U-shaped frame corresponding to the full gear, and a reset spring 2 is sleeved between the upper column and the lower column.

[0007] Preferably, a top block 1 is provided at the top center of the first U-shaped frame, and the top block 1 is fixed on the boosting device. A convex strip is provided in the longitudinal middle of the inner wall of the left groove and the right groove, and a convex strip sliding groove matching the convex strip is provided at the center of the side edges on both sides of the second U-shaped frame; an upper pad is provided at the top of the upper column, and the top of the upper pad is fixed on the bottom of the first U-shaped frame, and a lower pad is provided at the bottom of the lower column, and the bottom of the lower pad is fixed at the bottom of the U-shaped groove of the second U-shaped frame.

[0008] Preferably, the boosting device includes a supporting box body, side columns are provided on both sides of the top of the supporting box body, top blocks are provided on the tops of the side columns, front plates and rear plates are provided between the two sides of the side columns, a cavity is formed between the front plate and the rear plate, a driving part is provided in the cavity, rails are provided at the lower parts of both sides of the front plate away from the side columns, a matching slider 1 is provided on the rail, a cross plate is provided across the side of the slider 1 away from the rail, a bottom block is provided at the bottom center of the cross plate, an upper beam plate is provided at the lower part of the side of the bottom block away from the cross plate, a plurality of pressure columns are provided at the bottom of the upper beam plate, a lower beam plate is provided below the pressure columns, a plurality of cylinders are provided at the bottom of the lower beam plate, the pressure columns pass through the cylinders, a return spring 1 is sleeved on the pressure column between the upper beam plate and the lower beam plate; a limiting lifting part is provided at the lower part of the side of the side column, and the limiting lifting part is connected to the side of the cross plate.

[0009] Preferably, the limiting lifting part includes a fixed plate, which is fixed at the lower part of the side of the side column, and a lifting groove is provided in the middle of the fixed plate, and a matching slider 2 is provided in the lifting groove, and a lifting column is provided on the outer side of the slider 2, and a connecting column is provided on the front side of the lifting column. An L-shaped frame is provided on the side of the connecting column away from the lifting column, and the side of the L-shaped frame is fixed at the center of the side of the horizontal plate.

[0010] Preferably, the driving part includes a driver, which is installed at the center of the lower side of the rear plate, the output end of the driver is connected to a shaft, the shaft passes through the rear plate, a main pulley is provided on the side of the shaft away from the driver, a secondary pulley is provided above the main pulley, the secondary pulley is connected to the main pulley through a belt, a pulley shaft is inserted through the middle of the secondary pulley, one end of the pulley shaft is connected to the inner upper center of the rear plate, the other end of the pulley shaft passes through the front plate, an eccentric wheel is provided at the end of the pulley shaft away from the rear plate, a cam is provided on the side of the eccentric wheel away from the pulley shaft, an interlaced shaft is inserted through the lower part of the cam, and the inner side of the interlaced shaft is connected to the center position of the upper front side of the horizontal plate.

[0011] Preferably, the mounting seat is provided with several mounting grooves, a through hole is provided on one side of the mounting groove, and the pressure sensor body is located in the mounting groove; the auxiliary part includes a disc, the disc is located in the mounting groove, a connecting column 1 is provided at the bottom of the disc, the connecting column 1 passes through the through hole, an inverted solid conical column is provided at the bottom of the connecting column 1, a connecting column 2 is provided at the center of the bottom of the inverted solid conical column, a sphere is provided at the bottom of the connecting column 2, an inverted hollow conical column is provided at the bottom of the sphere, a connecting column 3 is provided at the center of the bottom of the inverted hollow conical column, and the bottom of the connecting column 3 is arranged on the top of the supporting base plate; a connecting part is provided between the mounting groove and the cylinder.

[0012] Preferably, the connecting part includes a first positioning ring, the top of the first positioning ring is located on the side of the center ring and is provided with a convex ring; the pressure sensor body is located inside the convex ring and the first positioning ring; cylinder bodies are provided on both sides of the top of the first positioning ring, a matching piston rod is provided in the cylinder body, the piston rod passes through the cylinder body, a second positioning ring is provided on the top of the piston rod, and the second positioning ring is sleeved on the cylinder; a spring is sleeved on the piston rod between the second positioning ring and the cylinder body.

[0013] Preferably, the convex ring is provided with several fastening holes, and fastening screws are inserted into the fastening holes; several fixing holes 1 are provided on the right side of the first positioning ring, and several fixing holes 2 are provided on the side corresponding to the fixing holes on the mounting seat, and fasteners are provided in the fixing holes 1.

[0014] Preferably, hollow notches are provided on both sides of the supporting platform on both sides of the mounting seat; the positioning part includes a hydraulic cylinder, a matching hydraulic rod is provided in the hydraulic cylinder, the hydraulic rod runs through the hydraulic cylinder, a protrusion is provided on the top of the hydraulic rod, a mounting frame is provided on one side of the protrusion, a center clamping groove is provided at the center of the side of the mounting frame corresponding to the protrusion, and driving arms 2 are provided on both sides of the protrusion near the center clamping groove, and driving arms 2 run through the notch, and positioning pressure blocks are provided at the upper part of the corresponding side of driving arm 2, and driving arms 1 are provided at the center of both sides of the positioning pressure blocks, and an inverted T-shaped seat is provided at the lower part of the corresponding side of driving arm 1, and the bottom of the inverted T-shaped seat is fixed on one side of the top of the hydraulic cylinder, and a connecting shaft is provided across the middle of driving arm 1, and driving arms 3 are provided at both ends of the connecting shaft, and the other end of driving arm 3 is movably connected to the side of the protrusion away from driving arm 2.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. Install multiple pressure sensors on the mounting base assembly. Multiple pressure sensors are connected to the detection device on one side. A boosting device is provided above the pressure sensor, and a positioning part is provided on the side of the mounting base. The mounting base is positioned and fixed by the positioning part, and multiple pressure sensors are simultaneously pressurized and detected through the increasing device above. The boosting device is linked with an elastic mechanism. When the elastic mechanism receives pressure, the force generated by the boosting is transmitted to the pressure sensor along the Y-axis. Under the motion pressure keeping the Y-axis unchanged downward, when the pressure sensor is affected by different external factors to form an angle change, the support point surface formed between the pressure sensor and the mounting base will change, and the force transmitted from the upper Y-axis detects different contact surfaces of the pressure sensor, thereby improving the accuracy of the detection. In addition, different contact points of the pressure sensor are effectively detected according to different factors, thereby increasing the comprehensiveness of the detection, and multiple pressure sensors can be detected at one time.

[0017] 2. Several elastic mechanisms are provided between the upper beam plate and the lower beam plate. When the elastic mechanism receives downward pressure from above, the elastic mechanism will be compressed, causing the distance between the breaks in the force transmission path to be shortened. The force received by the elastic mechanism will not spread around due to the large distance between the faults, maintaining a vertical path on the Y-axis, thereby increasing the stability of the entire boost.

[0018] 3. The elastic mechanism presses the lower beam plate after being subjected to upward pressure. When a downward force is generated above the lower beam plate, several cylinders connected to the bottom will exert downward pressure, thereby improving the comprehensiveness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a supercharging device according to an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a connecting portion according to an embodiment of the present invention;

[0023] Figure 4 The auxiliary part explosion according to the embodiment of the present invention Figure 1 ;

[0024] Figure 5 The auxiliary part explosion according to the embodiment of the present invention Figure 2 ;

[0025] Figure 6 is a schematic diagram of a cylinder structure according to an embodiment of the present invention;

[0026] Figure 7 is a schematic structural diagram of a positioning portion according to an embodiment of the present invention;

[0027] Figure 8 is a schematic structural diagram of a first positioning ring according to an embodiment of the present invention;

[0028] Figure 9 is a schematic diagram of the connection structure between the elastic mechanism and the beam plate according to an embodiment of the present invention;

[0029] Figure 10 is a schematic structural diagram of an elastic mechanism according to an embodiment of the present invention;

[0030] Figure 11 is an exploded diagram of an elastic mechanism according to an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Support platform; 2. Support base plate; 3. Support foot; 4. Positioning part; 5. Mounting seat; 6. Pressurizing device; 7. Elastic mechanism; 8. First U-shaped frame; 9. Left groove; 10. Right groove; 11. Back plate; 12. Full gear; 13. First side gear; 14. Upper column; 15. Lower column; 16. Second U-shaped frame; 17. Second side gear; 18. Return spring 2; 19. Top block 1; 20. Raised strip; 21. Raised strip slide; 22. Upper pad; 23. Lower pad; 24. Support box; 25. Side column; 26. Top block 2; 27. Front plate; 28. Rear plate; 29. ​​Track; 30. Cross plate; 31. Bottom block; 32. Upper beam; 33. Pressure column; 34. Lower beam; 35. Cylinder; 36. Return spring 1; 37. Fixed plate; 38. Lifting slot; 39 , slider one; 40, lifting column; 41, connecting column four; 42, L-shaped frame; 43, primary pulley; 44, secondary pulley; 45, belt; 46, eccentric wheel; 47, cam; 48, mounting groove; 49, through hole; 50, disc; 51, connecting column one; 52, inverted solid tapered column; 53, connecting column two; 54, sphere; 55, inverted hollow tapered column; 56, connecting column three; 57, first locating ring; 58, convex ring; 59, cylinder body; 60, piston rod; 61, second locating ring; 62, spring; 63, fastening screw; 64, notch; 65, hydraulic cylinder; 66, hydraulic rod; 67, protrusion; 68, mounting frame; 69, center clamping groove; 70, driving arm two; 71, positioning pressure block; 72, driving arm one; 73, inverted T-shaped seat; 74, connecting shaft; 75, driving arm three. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] According to an embodiment of the present invention, Figures 1-11 Shown in:

[0036] The present invention provides a pressure sensor calibration and testing device, comprising a support platform 1, a support base plate 2, and a plurality of support legs 3; support legs 3 are provided at the four ends of the bottom of the support platform 1, and the support base plate 2 is located between the support legs 3. Symmetrical positioning parts 4 are provided on both sides of the top center position of the support base plate 2, and a mounting seat 5 is provided between the positioning parts 4 and located at the center above the support platform 1. The size of the mounting seat 5 can be set according to needs, and the installation positions of the positioning parts 4 on both sides are adjusted according to the size of the mounting seat 5. The positioning parts 4 are mainly used to clamp and position the two sides of the mounting seat 5 to keep the mounting seat 5 in a limited position. The mounting seat 5 is provided with a plurality of auxiliary parts, each of which is clamped with a pressure sensor body. A booster device 6 is provided above the pressure sensor body, and the booster device 6 is installed on one side of the top of the support platform 1. A detection device is provided on the booster device 6. The detection device facilitates pressure detection of the pressure sensor body on the auxiliary part. The detection device here is an existing structure and is not explained in detail.

[0037] The booster device 6 is provided with a plurality of elastic mechanisms 7, such as Figures 9-11As shown in, the elastic mechanism 7 includes a first U-shaped frame 8, the first U-shaped frame 8 is an inverted U-shaped structure, and a left groove 9 and a right groove 10 are respectively provided on both sides of the first U-shaped frame 8. A back plate 11 is provided on the back of the first U-shaped frame 8, and a full gear 12 is provided below the back plate 11, which is located in the U groove of the first U-shaped frame 8. The left side of the full gear 12 is located on the left side of the U groove of the first U-shaped frame 8 and is provided with a meshing first side gear 13. An upper column 14 is provided at the bottom center of the first U-shaped frame 8, and a lower column 15 is provided below the upper column 14. A second U-shaped frame 16 is provided at the bottom of the lower column 15, and the second U-shaped frame 16 is inserted on both sides. In the left groove 9 and the right groove 10, a second side gear tooth 17 meshing with the full gear 12 is provided on the right side of the second U-shaped frame 16 corresponding to the full gear 12, and a return spring 2 18 is sleeved between the upper column 14 and the lower column 15. A top block 19 is provided at the top center of the first U-shaped frame 8, and the top block 19 is fixed on the supercharging device 6. A convex strip 20 is provided in the longitudinal middle part of the inner wall of the left groove 9 and the right groove 10, and a convex strip slide groove 21 matching the convex strip 20 is provided at the center of the side edges on both sides of the second U-shaped frame 16; an upper pad 22 is provided on the top of the upper column 14, and the top of the upper pad 22 is fixed on the first U-shaped frame 8 On the bottom of the lower column 15, a lower pad 23 is provided at the bottom of the lower pad 23, and the bottom of the lower pad 23 is fixed at the bottom of the U-shaped groove of the second U-shaped frame 16, wherein the left side of the left groove 9 is an open structure, and the right side of the left groove 9 is a plate surface, on which a first side gear 13 is provided. The first side gear 13 is just engaged with the full gear 12 set in the middle, and a gear shaft is inserted at the center of the full gear 12, and one side of the gear shaft is connected to the back plate 11. The gear shaft at this location can also be connected to a battery, and the battery can be set on the back of the back plate 11, or it can be not connected to the battery, and directly through the downward force generated above Down, pressing the first U-shaped frame downward, when the first U-shaped frame moves downward, the first side gear teeth 13 on the inside will drive the full gear 12 to rotate, and the full gear 12 will further drive the second side gear teeth 17 engaged on the right side, causing the first side gear teeth 13 and the second side gear teeth 17 to slide in opposite directions. In this way, when pressure is applied to the pressure sensor body, the stability of the Y-axis transmission between the upper beam plate 32 and the lower beam plate 34 is maintained. When the booster device 6 cooperates with the elastic mechanism 7, during the process of applying pressure, the entire structure remains in a certain stability, which is equivalent to being in a static state.

[0038] The booster device 6 includes a support box 24, according to Figure 2As shown in the figure, side columns 25 are provided on both sides of the top of the support box 24, and top blocks 26 are provided on the tops of the side columns 25. A front plate 27 and a rear plate 28 are provided between the two sides of the side columns 25. A cavity is formed between the front plate 27 and the rear plate 28, and a driving part is provided in the cavity. Tracks 29 are provided on the lower parts of both sides of the front plate 27 away from the side columns 25. Convex plates convex forward are provided on both sides of the front of the front plate 27. The track 29 is installed on the track 29. A matching slider 39 is provided on the track 29. The slider 39 is away from the track 29. A cross plate 30 is provided across the sides, and a bottom block 31 is provided at the bottom center of the cross plate 30. An upper beam plate 32 is provided at the lower part of the bottom block 31 away from the cross plate 30. A number of pressure columns 33 are provided at the bottom of the upper beam plate 32, and a lower beam plate 34 is provided below the pressure columns 33. A number of cylinders 35 are provided at the bottom of the lower beam plate 34. The pressure columns 33 pass through the cylinders 35, and a return spring 36 is provided on the pressure column 33 between the upper beam plate 32 and the lower beam plate 34. A limit lifting part is provided at the lower part of the side column 25, and the limit lifting part is connected to the side of the cross plate 30.

[0039] The position limiting lifting portion includes a fixed plate 37, which is fixed to the lower side of the side column 25. A lifting groove 38 is provided in the middle of the fixed plate 37, and a matching slider 2 is provided in the lifting groove 38. A lifting column 40 is provided on the outer side of the slider 2, and a connecting column 41 is provided on the front side of the lifting column 40. An L-shaped frame 42 is provided on the side of the connecting column 41 away from the lifting column 40, and the side of the L-shaped frame 42 is fixed to the center of the side of the horizontal plate 30.

[0040] The driving part includes a driver, which is installed at the center of the lower side of the rear plate 28. The output end of the driver is connected to a shaft, which passes through the rear plate 28. A main pulley 43 is provided on the side of the shaft away from the driver. A secondary pulley 44 is provided above the main pulley 43. The secondary pulley 44 is connected to the main pulley 43 through a belt 45. A pulley shaft is inserted into the middle of the secondary pulley 44. One end of the pulley shaft is connected to the center of the inner upper part of the rear plate 28, and the other end of the pulley shaft passes through the front plate 27. The end of the pulley shaft away from the rear plate 28 An eccentric wheel 46 is provided, and a cam 47 is provided on the side of the eccentric wheel 46 away from the pulley shaft. A through shaft is inserted into the lower part of the cam 47, and the inner side of the through shaft is connected to the center position of the upper front side of the horizontal plate 30. A circular hole is provided at the upper center of the front plate 27, and the pulley shaft passes through the circular hole. After the eccentric wheel 46 rotates driven by the pulley shaft, the cam 47 connected to the front side of the eccentric wheel 46 will generate a trajectory of rotating up and down movement with the rotation motion, and the cam 47 will pull the lower connected horizontal plate 30 up and down. Among them, the lower beam 34 and the pressure column 33 are movably connected. When the cylinder 35 presses the top surface of the pressure sensor body, the contact area between the cylinder 35 and the top surface of the pressure sensor body is relatively large. When the downward force continues to apply pressure, the pressure column 33 will continue to apply pressure downward. In this way, the pressure column 33 will press the center point of the top surface of the pressure sensor body below, and the force at the center point will increase. The different pressure data generated by the cylinder 35 and the pressure column 33 are respectively transmitted to the detection device connected to the side. The detection device can be installed on the side of the side column 25, or it can be separately set on the support platform 1. It is mainly for detecting the pressure generated by the pressure, and the detected data is stored or displayed on the connected display screen.

[0041] The mounting base 5 is provided with a plurality of mounting grooves 48, one side of which is provided with a through hole 49, and the pressure sensor body is located in the mounting groove 48; the auxiliary part includes a disc 50, which can be adjusted according to the Figure 3-Figure 6As shown in the figure, the disc 50 is located in the mounting groove 48, and a connecting column 1 51 is provided at the bottom of the disc 50. The connecting column 1 51 passes through the through hole 49. The aperture of the through hole 49 is larger than the cross-sectional size of the connecting column 1 51. The bottom of the connecting column 1 51 is provided with an inverted solid conical column 52, and the center of the bottom of the inverted solid conical column 52 is provided with a connecting column 2 53. The bottom of the connecting column 2 53 is provided with a sphere 54, and the bottom of the sphere 54 is provided with an inverted hollow conical column 55. The center of the bottom of the inverted hollow conical column 55 is provided with a connecting column 3 56. The bottom of the connecting column 3 56 is set on the top of the supporting base plate 2. A connecting portion is provided between the mounting groove 48 and the cylinder 35, and the connecting portion includes a first positioning ring 57, and a convex ring 58 is provided on the top of the first positioning ring 57 on the side of the center ring; the pressure sensor body is located inside the convex ring 58 and the first positioning ring 57; a cylinder 59 is provided on both sides of the top of the first positioning ring 57, and a matching piston rod 60 is provided in the cylinder 59, and the piston rod 60 passes through the cylinder 59. A second positioning ring 61 is provided on the top of the piston rod 60, and the second positioning ring 61 is sleeved on the cylinder 35; a spring is sleeved on the piston rod 60 between the second positioning ring 61 and the cylinder 59. 62, a plurality of fastening holes are provided on the convex ring 58, and a fastening screw 63 is inserted into the fastening hole; a plurality of fixing holes 1 are provided on the right side of the first positioning ring 57, and a plurality of fixing holes 2 are provided on the side of the corresponding fixing holes on the mounting seat 5, and a fastener is provided in the fixing hole 1. The mounting seat 5 and the support table 1 are a movable structure, and the length of the mounting seat 5 can be adjusted according to the needs. When the pressure sensor body is subjected to downward pressure, the pressure sensor body will press the disc 50, and there is a gap between the bottom of the disc 50 and the bottom wall of the mounting groove 48. When the disc 50 is subjected to pressure, the disc 50 will It will press the connecting column 2 53. Since the sphere 54 and the inner wall of the inverted hollow conical column 55 are movable structures, the sphere 54 will be displaced on the inner wall of the inverted hollow conical column 55, and the top surface of the pressure sensor body will be tilted. The angle of the tilted surface at this location will only change slightly under the influence of the first positioning ring 57. In this way, the point or surface where the top surface of the pressure sensor body contacts the pressure will change under the limitation of the auxiliary part. The component at this location is regarded as a moving state, and the upper part is regarded as a static state to perform pressure detection on the pressure sensor.

[0042] Both sides of the support platform 1 are provided with hollow slots 64 on both sides of the mounting seat 5. The positioning part 4 includes a hydraulic cylinder 65. Figure 1 and Figure 7As shown, a matching hydraulic rod 66 is provided in the hydraulic cylinder 65, and the hydraulic rod 66 passes through the hydraulic cylinder 65. A protrusion 67 is provided on the top of the hydraulic rod 66, and a mounting bracket 68 is provided on one side of the protrusion 67. A center clamping groove 69 is provided at the center of the side of the mounting bracket 68 corresponding to the protrusion 67. A driving arm 2 70 is provided on both sides of the protrusion 67 near the center clamping groove 69. The driving arm 2 70 passes through the notch 64. A positioning pressure block 71 is provided at the upper part of the corresponding side of the driving arm 2 70. A driving arm 1 72 is provided at the center of both sides of the positioning pressure block 71. An inverted T-shaped seat 73 is provided at the lower part of the corresponding side of the driving arm 1 72. The bottom of the inverted T-shaped seat 73 is fixed on one side of the top of the hydraulic cylinder 65. A connecting shaft 74 is provided across the middle of the driving arm 1 72. A third drive arm 75 is provided at each end of the shaft 74. The other end of the third drive arm 75 is movably connected to the side of the protrusion 67 away from the second drive arm 70. A hollow notch 64 is provided on the support platform 1 on both sides of the mounting seat 5. The drive arm passes through the notch 64. The top surface of the mounting bracket 68 is fixed to the bottom surface of the support platform 1. The bottom of the mounting bracket 68 is fixed to one side of the top of the hydraulic cylinder 65. The other side of the top of the hydraulic cylinder 65 is provided with an inverted T-shaped seat 73. When the hydraulic cylinder 65 and the hydraulic rod 66 produce telescopic movement, the hydraulic rod 66 will push the protrusion 67 upward, further driving the positioning pressure block 71 through the notch 64 to press the top of both sides of the mounting seat 5, positioning the mounting seat 5 on the support platform 1 and maintaining the stability between the mounting seat 5 and the support platform 1. The positioning pressure block 71 is folded and expanded into the central clamping groove 69 as the hydraulic rod 66 folds and expands, serving as a storage.

[0043] Detailed usage and effects of this embodiment:

[0044] Make a mounting base 5 of appropriate length, place the pressure sensor body to be tested in the mounting groove 48, press the disc 50 on the bottom of the pressure sensor body, and pass the upper part of the pressure sensor body through the first positioning ring 57. Fasten the first positioning ring 57 to the mounting base 5 through several fasteners. At the same time, tighten several fastening screws 63 to clamp the pressure sensor body in the convex ring 58, so that the pressure sensor body is limited inside it. At this time, the cylinder 59 and the piston rod 60 are in a stretched state.

[0045] Then drive the hydraulic cylinder 65 and the hydraulic rod 66 to generate telescopic movement between the two, so that the hydraulic rod 66 pushes the protrusion 67 upward, and the protrusion 67 will push the positioning block 71 upward. When the positioning block 71 is transported upward, it will bring the driving arm 2 70 and the driving arm 3 75 connected to the two ends of the side respectively. After the lower part of the driving arm 2 70 is upward, the top of the driving arm 2 70 will push the right side of the positioning block 71 (as shown in FIG. Figure 7) upward, the right end of the driving arm three 75 is pushed upward by the protrusion 67, and the left end of the driving arm three 75 will lead the driving arm one 72 to rotate at an angle, causing the top of the driving arm one 72 to drive the side of the positioning block 71 downward near the center position. In this way, the positioning block 71 will pass through the slot 64 and press the mounting seat 5 on the upper side, positioning and clamping the top side of the mounting seat 5, so that the mounting seat 5 and the support platform 1 are firmly clamped.

[0046] Furthermore, the driver is driven to rotate the primary pulley 43. The primary pulley 43 rotates, which in turn drives the secondary pulley 44 via the belt 45. The secondary pulley 44 in turn drives the eccentric 46 via the pulley shaft. The rotation of the eccentric 46 drives the cam 47 connected to the side end. The cam 47 pulls the cross plate 30 connected to the bottom. The cross plate 30 is limited by the position between the slider 1 39 connected to the side ends and the track 29, causing it to move up and down. During this period, the lifting column 40, driven by the L-shaped frame 42, causes the slider 2 connected to the side to slide up and down in the lifting groove 38. As the cross plate 30 moves up and down, it presses the upper beam 32 downward. The upper beam 32 presses the multiple pressure columns 33 at the bottom. The pressure columns 33 push down the cylinders 35 mounted below. The cylinders 35 press the corresponding pressure sensor body below. The pressure of the cylinders 35 pushes the pressure sensor body into the installation groove 48, and the piston rod 60 extends into the cylinder 59. At the same time, when the pressure on the upper beam 32 is still in the pressure-applying state, the cylinder 35 presses the top surface of the pressure sensor body and remains in a stationary state. When the pressure-applying column 33 is then subjected to downward pressure, the pressure-applying column 33 will pass through the lower beam 34 and the cylinder 35 and press the top center of the pressure sensor body. The pressure at the center of the pressure sensor body will increase, and the pressure-applying pressure receiving surface will be converted into a receiving point. Since there is a certain distance between the disc 50 and the bottom wall of the mounting groove 48, the disc 50 will press the connecting column under the downward pressure from the upper part. 51, connecting column 1 51 presses against the inverted solid conical column 52 below, which in turn presses against connecting column 2 53 at the bottom, which in turn presses against sphere 54. Because sphere 54 contacts the inner wall of inverted hollow conical column 55, downward pressure on sphere 54 causes it to slide under a certain vertical force. As sphere 54 slides, the angle of disk 50 and the pressure sensor body above it tilts accordingly. This causes the contact point between the downward pressure applied by pressure column 33 and the top surface of the pressure sensor body to change. This primarily tests the pressure at different contact points on the pressure sensor body when the downward pressure applied by pressure column 33 exceeds a certain range of pressure from column 35.

[0047] When the upper beam 32 is pressed downward, the upper beam 32 will press the first U-shaped frame 8, and the first side gear teeth 13 on the inner side of the first U-shaped frame 8 will drive the full gear 12 connected in the middle to rotate. After the full gear 12 rotates, it will drive the second side gear teeth 17 of the right core, and the second side gear teeth 17 will move upward. The second U-shaped frame 16 will slide upward into the left groove 9 and the right groove 10, and the convex strip 20 will slide in the convex strip groove 21. The distance between the upper column 14 and the lower column 15 will become smaller. After the fault spacing during the force transmission process becomes smaller, the force of the Y-axis will be dispersed to the surroundings and kept on the same vertical plane, so that when the pressure sensor body is performing a pressure operation, the stability of the downward pressure from the upper part can be maintained.

[0048] The above specific embodiments will allow those skilled in the art to easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A pressure sensor calibration test device, comprising a support platform (1), a support base (2) and a plurality of support legs (3); It is characterized by: Symmetrical positioning parts (4) are provided on both sides of the center position of the top of the support base plate (2); a mounting seat (5) is provided between the positioning parts (4) and at the center above the support platform (1); a plurality of auxiliary parts are provided on the mounting seat (5); a pressure sensor body is clamped on each of the auxiliary parts; a boosting device (6) is provided above the pressure sensor body, and the boosting device (6) is installed on one side of the top of the support platform (1); The boosting device (6) is provided with a plurality of elastic mechanisms (7), the elastic mechanism (7) including a first U-shaped frame (8), the first U-shaped frame (8) being an inverted U-shaped structure, the first U-shaped frame (8) being provided with a left groove (9) and a right groove (10) on both sides, the first U-shaped frame (8) being provided with a back plate (11) on the back side, the back plate (11) being provided with a full gear (12) on the inner side thereof located below the U groove of the first U-shaped frame (8), the full gear (12) being provided with a first side gear (12) meshing with the first side gear (12) on the left side thereof located on the left side of the U groove of the first U-shaped frame (8) 13), an upper column (14) is provided at the bottom center of the first U-shaped frame (8), a lower column (15) is provided below the upper column (14), a second U-shaped frame (16) is provided at the bottom of the lower column (15), both sides of the second U-shaped frame (16) are inserted into the left groove (9) and the right groove (10), a second side gear (17) meshing with the full gear (12) is provided on the right side of the second U-shaped frame (16) corresponding to the full gear (12), and a return spring (18) is provided between the upper column (14) and the lower column (15); The booster device (6) includes a support box (24), side columns (25) are provided on both sides of the top of the support box (24), and top blocks (26) are provided on the tops of the side columns (25). A front plate (27) and a rear plate (28) are provided between the two sides of the side columns (25), a cavity is formed between the front plate (27) and the rear plate (28), and a driving part is provided in the cavity. Tracks (29) are provided on the lower parts of both sides of the front plate (27) away from the side columns (25), and a matching slider (39) is provided on the track (29). A cross plate (30) is provided between the slider (39) away from the track (29), and the bottom center of the cross plate (30) is provided. A bottom block (31) is provided, an upper beam (32) is provided at the lower part of the side of the bottom block (31) away from the transverse plate (30), a plurality of pressure columns (33) are provided at the bottom of the upper beam (32), a lower beam (34) is provided below the pressure columns (33), a plurality of cylinders (35) are provided at the bottom of the lower beam (34), the pressure columns (33) pass through the cylinders (35), and a return spring (36) is provided on the pressure columns (33) and is located between the upper beam (32) and the lower beam (34); a plurality of mounting grooves (48) are provided on the mounting seat (5), a through hole (49) is provided on one side of the mounting groove (48), and the pressure sensor body is located in the mounting groove (48); The auxiliary part includes a disc (50), the disc (50) is located in the mounting groove (48), a connecting column (51) is provided at the bottom of the disc (50), the connecting column (51) passes through the through hole (49), the bottom of the connecting column (51) is provided with an inverted solid conical column (52), the center of the bottom of the inverted solid conical column (52) is provided with a connecting column (53), the bottom of the connecting column (53) is provided with a sphere (54), the bottom of the sphere (54) is provided with an inverted hollow conical column (55), the center of the bottom of the inverted hollow conical column (55) is provided with a connecting column (56), and the bottom of the connecting column (56) is provided on the top of the supporting base plate (2); A connecting portion is provided between the mounting groove (48) and the cylinder (35), and the connecting portion includes a first positioning ring (57). The top of the first positioning ring (57) is located on the side of the center ring and is provided with a convex ring (58); the pressure sensor body is located within the convex ring (58) and the first positioning ring (57); cylinder bodies (59) are provided on both sides of the top of the first positioning ring (57), and a matching piston rod (60) is provided in the cylinder body (59). The piston rod (60) passes through the cylinder body (59). A second positioning ring (61) is provided on the top of the cylinder (35), and the second positioning ring (61) is sleeved on the cylinder (35); a spring (62) is sleeved on the piston rod (60) between the second positioning ring (61) and the cylinder body (59), and a plurality of fastening holes are provided on the convex ring (58), and fastening screws (63) are inserted into the fastening holes; a plurality of fixing holes 1 are provided on the right side of the first positioning ring (57), and a plurality of fixing holes 2 are provided on the side of the mounting seat (5) corresponding to the fixing holes, and a fastener is provided in the fixing hole 1.

2. A pressure sensor calibration and testing device according to claim 1, characterized in that: A top block (19) is provided at the center of the top of the first U-shaped frame (8), and the top block (19) is fixed to the booster device (6). A convex strip (20) is provided at the longitudinal middle of the inner wall of the left groove (9) and the right groove (10). A convex strip sliding groove (21) matching the convex strip (20) is provided at the center of the side edges of both sides of the second U-shaped frame (16). An upper pad (22) is provided at the top of the upper column (14), and the top of the upper pad (22) is fixed to the bottom of the first U-shaped frame (8). A lower pad (23) is provided at the bottom of the lower column (15), and the bottom of the lower pad (23) is fixed to the bottom of the U-shaped groove of the second U-shaped frame (16).

3. The pressure sensor calibration and testing device according to claim 1, characterized in that: A position-limiting lifting portion is provided at the lower portion of the side of the side column (25), and the position-limiting lifting portion is connected to the side of the horizontal plate (30).

4. A pressure sensor calibration and testing device according to claim 3, characterized in that: The position limiting lifting part includes a fixed plate (37), which is fixed to the lower side of the side column (25), and a lifting groove (38) is provided in the middle of the fixed plate (37). A matching slider 2 is provided in the lifting groove (38), and a lifting column (40) is provided on the outer side of the slider 2. A connecting column 4 (41) is provided on the front side of the lifting column (40). An L-shaped frame (42) is provided on the side of the connecting column 4 (41) away from the lifting column (40), and the side of the L-shaped frame (42) is fixed to the center of the side of the horizontal plate (30).

5. The pressure sensor calibration and testing device according to claim 1, characterized in that: The driving part includes a driver, which is installed at the center of the lower side of the rear plate (28), the output end of the driver is connected to a shaft, the shaft passes through the rear plate (28), a main pulley (43) is provided on the side of the shaft away from the driver, a secondary pulley (44) is provided above the main pulley (43), the secondary pulley (44) is connected to the main pulley (43) through a belt (45), a pulley shaft is inserted in the middle of the secondary pulley (44), one end of the pulley shaft is connected to the center of the inner upper part of the rear plate (28), the other end of the pulley shaft passes through the front plate (27), an eccentric wheel (46) is provided at one end of the pulley shaft away from the rear plate (28), a cam (47) is provided on the side of the eccentric wheel (46) away from the pulley shaft, and an interlaced shaft is inserted in the lower part of the cam (47), and the inner side of the interlaced shaft is connected to the center position of the upper front side of the transverse plate (30).

6. The pressure sensor calibration and testing device according to claim 1, characterized in that: Both sides of the support platform (1) are provided with hollow notches (64) on both sides of the mounting seat (5); The positioning part (4) includes a hydraulic cylinder (65), a hydraulic rod (66) is provided in the hydraulic cylinder (65), the hydraulic rod (66) passes through the hydraulic cylinder (65), a convex block (67) is provided on the top of the hydraulic rod (66), a mounting frame (68) is provided on one side of the convex block (67), a center center clamping groove (69) is provided at the center of the side of the mounting frame (68) corresponding to the convex block (67), and a driving arm (70) is provided on both sides of the convex block (67) near the center clamping groove (69), and the driving arm (70) passes through the notch (64). 0) is provided at the upper part thereof, a driving arm 1 (72) is provided at the center of both sides of the positioning block (71), an inverted T-shaped seat (73) is provided at the lower part thereof between the driving arm 1 (72), the bottom of the inverted T-shaped seat (73) is fixed on one side of the top of the hydraulic cylinder (65), a connecting shaft (74) is provided across the middle of the driving arm 1 (72), and a driving arm 3 (75) is provided at both ends of the connecting shaft (74), and the other end of the driving arm 3 (75) is movably connected to the side of the protrusion (67) away from the driving arm 2 (70).

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