Pressure sensor calibration device

Abstract

The utility model discloses a pressure sensor calibration device, which relates to the technical field of calibration and comprises a workbench and a fixed seat, fixed cylinders are arranged above the workbench and the fixed seat, connecting rods are connected in the fixed cylinders in a sliding manner, convex caps are fixedly connected to the tops of the connecting rods, sliding plates are fixedly connected to the connecting rods, and the sliding plates are connected in the fixed cylinders in a sliding manner. The bottom of the sliding plate is fixedly connected with a reset spring, the reset spring is fixedly connected with the bottom wall of the fixing cylinder, the bottom of the connecting rod is fixedly connected with a pressing block, and symmetrical protruding blocks are arranged on the two sides of the upper portion of the workbench. The device has the beneficial effects that the convex block extrudes the convex cap to drive the connecting rod to slide downwards to enable the reset spring to be compressed and deformed, so that the pressing block is driven to apply pressure to the stress end of the pressure sensor and read a numerical value, the convex cap is separated from the convex block to gradually extrude the convex block on the other side, different pressures are applied to the stress end of the pressure sensor, and the output numerical value is recorded; through two different pressure values, the accuracy of the pressure sensor can be conveniently judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the calibration technical field, in particular to a pressure sensor calibration device. BACKGROUND

[0002] Pressure sensor is the most common sensor in industrial practice, and is widely used in various industrial automatic control environments, and is mainly used in the measurement of acceleration, pressure and force.

[0003] Through the retrieval, the patent of China patent publication number CN222013400U discloses a kind of pressure sensor calibration device, the pressure sensor to be detected is placed in the placement groove, the calibration component is driven to move down by starting air cylinder, so that the calibration component completes the detection of pressure sensor, the driving pinion is driven to rotate by starting servo motor and engages with rack, drive rack and moving plate are translated along the length direction of sliding groove, so that another pressure sensor to be calibrated is retrieved to the bottom of calibration assembly and is detected, the device has certain problems: a certain size of standard force is always applied to pressure sensor, it is inconvenient to apply different pressures for calibration multiple times, and the reliability of calibration is affected. UTILITY MODEL CONTENT

[0004] The utility model aims at solving above-mentioned problem and provides a kind of pressure sensor calibration device.

[0005] The utility model realizes the above-mentioned purpose by the following technical scheme:

[0006] A kind of pressure sensor calibration device, including workbench, workbench is equipped with power mechanism, power mechanism includes rotary table, rotary table rotation is connected at workbench top, rotary table top is fixedly connected with multiple fixed seats, multiple fixed seats are symmetrical along the radial direction of rotary table, fixed seat top is equipped with fixed cylinder, fixed cylinder is slidably connected with connecting rod, connecting rod top is fixedly connected with convex cap, connecting rod is fixedly connected with sliding plate, sliding plate is slidably connected in fixed cylinder, sliding plate is below convex cap, sliding plate bottom is fixedly connected with reset spring, reset spring is fixedly connected with the bottom wall of fixed cylinder, reset spring is sleeved on the outside of connecting rod, connecting rod bottom is fixedly connected with pressure block, pressure block is below fixed cylinder, workbench top both sides are equipped with symmetrical convex block, the distance from the axis of rotary table to convex block is equal to the distance from the axis of rotary table to convex cap.

[0007] Preferably, workbench bottom is fixedly connected with power motor, and the output shaft of power motor is fixedly connected with rotary table.

[0008] Preferably, the side of fixed seat close to rotary table axis is fixedly connected with support, and support is fixedly connected with fixed cylinder, the top of fixed seat is provided with clamping groove, one end of clamping groove close to support is arc-shaped, and the arc-shaped end of fixed cylinder and clamping groove is coaxial.

[0009] Preferably, the fixed seat is slidably connected with a sliding rod away from one side of the support, the sliding rod is fixedly connected with a clamping plate close to one side of the support, the clamping plate is slidably connected in the clamping groove, and the clamping plate is fixedly connected with a clamping spring close to one side of the sliding rod.

[0010] Preferably, the workbench is fixedly connected with a support frame at the top, symmetric screw rods are threadedly connected to both sides of the top of the support frame, and the convex block is coaxially fixed to the bottom of the screw rod.

[0011] Preferably, the support is fixedly connected with a limiting frame close to one side of the sliding rod, the limiting frame is coaxial with the fixed cylinder, and the limiting frame is located above the clamping groove.

[0012] Beneficial effects are that the convex block extrudes the convex cap to drive the connecting rod to slide downward to compress and deform the reset spring, so that the pressure block applies pressure to the force receiving end of the pressure sensor and reads the value, the convex cap extrudes the other convex block to apply different pressure to the force receiving end of the pressure sensor and record the output value, and the two different pressure values facilitate judging the accuracy of the pressure sensor.

[0013] The additional technical features and advantages of the utility model will be more obvious in the following description, or can be understood through the specific practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used together with the following specific embodiments to explain the utility model, but do not constitute the limitation of the utility model. In the drawings:

[0015] Figure 1 It is a perspective view of the pressure sensor calibration device of the utility model;

[0016] Figure 2 It is an enlarged view of A of Figure 1

[0017] Figure 3 It is a front view of the pressure sensor calibration device of the utility model;

[0018] Figure 4 It is a sectional perspective view of the pressure sensor calibration device of the utility model;

[0019] Figure 5 It is an enlarged view of B of Figure 4

[0020] ​​The reference signs are explained as follows: 101, workbench; 102, support frame; 201, power motor; 202, rotating disc; 203, fixed seat; 301, support; 302, fixed cylinder; 303, clamping groove; 401, sliding rod; 402, clamping spring; 403, clamping plate; 501, connecting rod; 502, convex cap; 503, sliding plate; 504, reset spring; 505, pressing block; 601, threaded rod; 602, convex block; 7, limiting frame. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] The utility model will be further described below with reference to the drawings:

[0024] As Figures 1-5As shown, a pressure sensor calibration device, including a workbench 101, the workbench 101 is provided with a power mechanism, the power mechanism includes a turntable 202, the turntable 202 is rotatably connected to the top of the workbench 101, a plurality of fixed seats 203 are fixedly connected to the top of the turntable 202, the plurality of fixed seats 203 are radially symmetrical along the turntable 202, a fixed cylinder 302 is arranged above each fixed seat 203, a connecting rod 501 is slidably connected in the fixed cylinder 302, a convex cap 502 is fixedly connected to the top of the connecting rod 501, a sliding plate 503 is fixedly connected to the connecting rod 501, the sliding plate 503 is slidably connected in the fixed cylinder 302, the sliding plate 503 is below the convex cap 502, a reset spring 504 is fixedly connected to the bottom of the sliding plate 503, the reset spring 504 is fixedly connected with the bottom wall of the fixed cylinder 302, the reset spring 504 is sleeved outside the connecting rod 501, a pressing block 505 is fixedly connected to the bottom of the connecting rod 501, the pressing block 505 is below the fixed cylinder 302, symmetrically protruding blocks 602 are arranged on the two sides of the top of the workbench 101, the distance from the axis of the turntable 202 to the protruding block 602 is equal to the distance from the axis of the turntable 202 to the convex cap 502, the fixed seat 203 drives the pressure sensor to rotate around the axis of the turntable 202, so that the protruding block 602 extrudes the convex cap 502, the convex cap 502 drives the connecting rod 501 to slide downward, so that the connecting rod 501 drives the sliding plate 503 to slide with the fixed cylinder 302, so that the reset spring 504 is compressed and deformed, thereby driving the pressing block 505 to press downward, a certain pressure is applied to the stress end of the pressure sensor, and the value of the pressure sensor is read, as the turntable 202 rotates, the convex cap 502 is separated from one side of the protruding block 602, and then gradually rotates to the other side of the protruding block 602, the convex cap 502 extrudes the other side of the protruding block 602, so that the connecting rod 501 drives the pressing block 505 to press downward, a pressure different from the first time is applied to the stress end of the pressure sensor, and the output value is recorded, by applying different pressures to the pressure sensor twice, the accuracy and sensitivity of the pressure sensor can be judged.

[0025] The bottom of the workbench 101 is fixedly connected with a power motor 201, the output shaft of the power motor 201 is fixedly connected with the turntable 202, the power motor 201 drives the turntable 202 to rotate, and the turntable 202 drives the plurality of fixed seats 203 to rotate intermittently.

[0026] The side of the fixed seat 203 close to the axis of the turntable 202 is fixedly connected with a support 301, the support 301 is fixedly connected with the fixed cylinder 302, the top of the fixed seat 203 is provided with a clamping groove 303, one end of the clamping groove 303 close to the support 301 is arc-shaped, and the fixed cylinder 302 is coaxial with the arc-shaped end of the clamping groove 303.

[0027] The fixed seat 203 is slidably connected with a sliding rod 401 away from one side of the support 301, the sliding rod 401 is fixedly connected with a clamping plate 403 close to one side of the support 301, the clamping plate 403 is slidably connected in the clamping groove 303, the clamping plate 403 is fixedly connected with a clamping spring 402 close to one side of the sliding rod 401, the sliding rod 401 is pulled in front to drive the clamping plate 403 to slide in the clamping groove 303, so that the clamping spring 402 is compressed and deformed, then the pressure sensor is placed in the clamping groove 303, the limiting frame 7 contacts the pressure sensor to limit it, the sliding rod 401 is loosened, the clamping spring 402 restores the deformation to drive the clamping plate 403 to clamp and fix the pressure sensor in the clamping groove 303.

[0028] The workbench 101 is fixedly connected with a support frame 102 on the top, symmetric screw rods 601 are threadedly connected on the top of the support frame 102, the lugs 602 are coaxially fixedly connected on the bottom of the screw rods 601, the lugs 602 are not in contact with the convex caps 502 in the initial state, so that the screw rods 601 can be adjusted, the screw rods 601 are rotated, the screw rods 601 are threadedly connected with the top of the support frame 102 to drive the lugs 602 to move downward, and the distance from the two groups of lugs 602 to the pressing blocks 505 can be adjusted respectively.

[0029] The support 301 is fixedly connected with a limiting frame 7 close to one side of the sliding rod 401, the limiting frame 7 is coaxial with the fixed cylinder 302, and the limiting frame 7 is located above the clamping groove 303.

[0030] Working principle: when in use, rotate the threaded rod 601, make the threaded rod 601 and the support frame 102 top threaded connection drive the protruding block 602 to move downward, the distance of two groups of protruding blocks 602 to the pressing block 505 can be adjusted respectively, the power motor 201 drives the rotating disc 202 to rotate, the rotating disc 202 drives a plurality of fixed seats 203 to rotate intermittently, the worker pulls the sliding rod 401 from the front of the workbench 101 to drive the clamping plate 403 to slide in the clamping groove 303, the clamping spring 402 is compressed and deformed, then the pressure sensor is placed in the clamping groove 303, the limiting frame 7 contacts the pressure sensor to limit it, loosen the sliding rod 401, the clamping spring 402 restores the deformation to drive the clamping plate 403 to clamp and fix the pressure sensor in the clamping groove 303, then the fixed seat 203 drives the pressure sensor to rotate around the axis of the rotating disc 202, the protruding block 602 extrudes the lug cap 502, the lug cap 502 drives the connecting rod 501 to slide downward, the connecting rod 501 drives the sliding plate 503 to slide with the fixed cylinder 302 to make the return spring 504 compressed and deformed, so as to drive the pressing block 505 to press downward, a certain pressure is applied to the force receiving end of the pressure sensor and the value of the pressure sensor is read, with the rotating disc 202 rotating, the lug cap 502 is separated from the protruding block 602 on one side, the force receiving end of the pressure sensor is reset, then gradually rotate to the protruding block 602 on the other side, the lug cap 502 extrudes the protruding block 602 on the other side, the connecting rod 501 drives the pressing block 505 to press downward, a pressure different from the first time is applied to the force receiving end of the pressure sensor, and the output value is recorded, by applying different pressures to the pressure sensor twice, the accuracy and sensitivity of the pressure sensor can be judged, with the fixed seat 203 rotating to the front of the workbench 101 again, the worker pulls the sliding rod 401 to take out the pressure sensor and classifies the pressure sensor through the monitoring data on both sides.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pressure sensor calibration apparatus comprising a workbench (101) provided with a power mechanism, characterized in that: The power mechanism comprises a rotating disc (202) rotatably connected to the top of the workbench (101), a plurality of fixing bases (203) fixedly connected to the top of the rotating disc (202), the fixing bases (203) being radially symmetrical along the rotating disc (202), a fixing cylinder (302) arranged above each fixing base (203), a connecting rod (501) slidably connected in the fixing cylinder (302), a convex cap (502) fixedly connected to the top of the connecting rod (501), a sliding plate (503) fixedly connected to the connecting rod (501), the sliding plate (503) being slidably connected in the fixing cylinder (302) and located below the convex cap (502), a reset spring (504) fixedly connected to the bottom of the sliding plate (503) and the bottom wall of the fixing cylinder (302), the reset spring (504) being sleeved outside the connecting rod (501), a pressing block (505) fixedly connected to the bottom of the connecting rod (501) and located below the fixing cylinder (302), and symmetrical convex blocks (602) arranged on the two sides of the top of the workbench (101), the distance from the axis of the rotating disc (202) to each convex block (602) being equal to the distance from the axis of the rotating disc (202) to the convex cap (502).

2. A pressure sensor calibration device according to claim 1, characterised in that: The bottom of the workbench (101) is fixedly connected with a power motor (201), and the output shaft of the power motor (201) is fixedly connected with the rotating disc (202).

3. A pressure sensor calibration device according to claim 2, wherein: The side of each fixing base (203) close to the axis of the rotating disc (202) is fixedly connected with a support (301), the support (301) is fixedly connected with the fixing cylinder (302), the top of the fixing base (203) is provided with a clamping groove (303), the end of the clamping groove (303) close to the support (301) is arc-shaped, and the fixing cylinder (302) is coaxial with the arc-shaped end of the clamping groove (303).

4. A pressure sensor calibration device according to claim 3, wherein: The side of each fixing base (203) away from the support (301) is slidably connected with a sliding rod (401), the side of the sliding rod (401) close to the support (301) is fixedly connected with a clamping plate (403), the clamping plate (403) is slidably connected in the clamping groove (303), and the side of the clamping plate (403) close to the sliding rod (401) is fixedly connected with a clamping spring (402).

5. A pressure sensor calibration device according to claim 1, wherein: The top of the workbench (101) is fixedly connected with a support frame (102), the top of the support frame (102) is threadedly connected with symmetrical threaded rods (601), and the convex blocks (602) are coaxially fixedly connected to the bottoms of the threaded rods (601).

6. A pressure sensor calibration device according to claim 4, wherein: The side of the support (301) close to the sliding rod (401) is fixedly connected with a limiting frame (7), the limiting frame (7) is coaxial with the fixing cylinder (302), and the limiting frame (7) is located above the clamping groove (303).

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