Pneumatic displacement sensor calibration device

Abstract

The utility model provides a pneumatic displacement sensor calibration device, which comprises a calibration mechanism and a fixing mechanism, the fixing mechanism is arranged on the calibration mechanism, the calibration mechanism comprises a base, a sliding chute, a sliding block, a supporting rod, a fixing seat, a connecting rod, a sleeve, a knob, a push-pull rod, a lantern ring, a screw rod and a contact disc, according to the utility model, the push-pull rod is pushed to drive the screw rod and the contact disc of the calibration mechanism to move, one side of the contact disc is contacted with the measuring end of the pneumatic displacement sensor, and the slide block is fixed through the fastening bolt, so that the pneumatic displacement sensor can be calibrated. The screw rod is further driven to move left and right by rotating the knob, the measuring end of the pneumatic displacement sensor is extruded when the screw rod moves left, the moving distance of the screw rod is obtained through the scale marks, the distance numerical value is compared with the measuring numerical value of the pneumatic displacement sensor, and the difference value is the measuring error of the pneumatic displacement sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic displacement sensors, in particular to a pneumatic displacement sensor calibration device. Background Art

[0002] A pneumatic displacement sensor uses pneumatic principles to measure the displacement of an object. It typically senses the position or movement of an object through changes in air pressure and is widely used in industrial automation, mechanical engineering, and other fields requiring precise displacement measurement. By utilizing the deformation of an inflatable airbag or cylinder, a pneumatic displacement sensor can detect the magnitude of an object's displacement. The shape and volume changes of the airbag are proportional to the object's displacement.

[0003] Since pneumatic sensors are often used in industrial environments such as high temperature, high humidity, and dust, they are prone to aging and corrosion under long-term exposure, which leads to reduced measurement accuracy and thus affects product accuracy. The utility model relates to a device that can quickly and conveniently detect the measurement accuracy of pneumatic sensors, specifically a pneumatic displacement sensor calibration device. Utility Model Content

[0004] The purpose of the present utility model is to provide a pneumatic displacement sensor calibration device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pneumatic displacement sensor calibration device includes a calibration mechanism and a fixing mechanism, wherein the fixing mechanism is installed on the calibration mechanism:

[0007] The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame. The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.

[0008] In one embodiment, a fastening bolt is installed on the slider.

[0009] In one embodiment, a limit disk is installed at one end of the screw rod and the contact disk.

[0010] In one embodiment, the fixing mechanism includes a holder, a clamp and a pneumatic displacement sensor. The holder is fixedly connected to the top of the base. A circular hole is opened on the holder. The clamp is installed on the circular hole of the holder. The pneumatic displacement sensor is clamped on the clamp.

[0011] In one embodiment, the center line of the circular hole on the holder coincides with the center line of the screw rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model drives the lead screw and the contact plate of the calibration mechanism to move by pushing the push-pull rod, brings one side of the contact plate into contact with the measuring end of the pneumatic displacement sensor, fixes the slider by tightening the bolt, and further drives the lead screw to move left and right by rotating the knob. When the lead screw moves left, it squeezes the measuring end of the pneumatic displacement sensor, obtains the moving distance of the lead screw through the scale line, and compares the distance value with the measured value of the pneumatic displacement sensor. The difference is the measurement error of the pneumatic displacement sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the utility model;

[0016] Figure 3 It is a side structural diagram of the screw rod of the utility model.

[0017] In the figure: 11, base; 12, slide; 13, slider; 14, support rod; 15, fixed seat; 16, connecting rod; 17, sleeve; 18, knob; 19, push-pull rod; 110, collar; 111, screw rod; 112, contact plate; 113, limit plate; 114, fastening bolt; 21, holder; 22, fixture; 23, pneumatic displacement sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example:

[0020] See also Figures 1 to 3 , the utility model provides a technical solution:

[0021] A pneumatic displacement sensor calibration device includes a calibration mechanism and a fixing mechanism, wherein the fixing mechanism is mounted on the calibration mechanism, wherein the calibration mechanism is used to measure whether the pneumatic displacement sensor 23 has errors, and the fixing mechanism is used to fix the pneumatic displacement sensor.

[0022] The calibration mechanism includes a base 11, a slide 12, a slider 13, a support rod 14, a fixed seat 15, a connecting rod 16, a sleeve 17, a knob 18, a push-pull rod 19, a collar 110, a screw 111 and a contact plate 112. The slide 12 is opened at the top of the base 11, and the slider 13 is slidably connected in the slide 12. The movement of the components on it is adjusted by the sliding slider 13. It is mainly used to adjust the distance between the calibration mechanism and the pneumatic displacement sensor, and is on the base 11. By setting the scale line, the value of the moving spacing can be determined. The support rod 14 is fixedly set on the top of the slider 13, the fixing seat 15 is welded to the top of the support rod 14, the sleeve 17 is installed on the connecting rod 16, the knob 18 is rotatably connected to one side of the sleeve 17, the push-pull rod 19 is welded to the top side of the slider 13, the collar 110 is fixedly connected to the top of the push-pull rod 19, the screw rod 111 passes through the sleeve 17 and does not contact the sleeve 17, and a threaded hole is opened on the knob 18. 18 is threadedly connected to the screw rod 111, and the screw rod 111 is slidably connected to the inner side of the collar 110. When working, by turning the knob 18, the screw rod 111 will move left and right because the knob 18 is threadedly connected to the screw rod 111, and the thread pitch on the screw rod 111 is fixed, so the movement pitch of the contact plate 112 can be more accurately determined by the number of turns of the knob 18. In order to further determine the number of turns of the knob 18, a screw rod 111 is also provided on the outer ring of the knob 18. Scale lines, the outer wall of the screw rod 111 is provided with a strip groove parallel to the center line, and a limit strip is installed on the ring 110. The limit strip matches the strip groove on the screw rod 111. Its function is to prevent the screw rod 111 from deflecting, so that the screw rod 111 can only move left and right and will not rotate. The contact disk 112 is fixedly connected to one end of the screw rod 111. Scale lines are provided on the base 11 and the outer wall of the knob 18. The scale lines are used to read the displacement value of the contact disk 112.

[0023] Furthermore, a fastening bolt 114 is installed on the slider 13 , and the slider 13 can be fixed to the base 11 by the fastening bolt 114 .

[0024] Furthermore, a limit plate 113 is installed at one end of the screw rod 111 and the contact plate 112 to prevent the screw rod 111 from falling off.

[0025] Furthermore, the fixing mechanism includes a holder 21, a clamp 22, and a pneumatic displacement sensor 23. The holder 21 is fixedly connected to the top of the base 11. The holder 21 has a circular hole. The clamp 22 is mounted on the circular hole of the holder 21. The pneumatic displacement sensor 23 is clamped on the clamp 22. The clamp 22 is used to clamp and fix the pneumatic displacement sensor 23.

[0026] Furthermore, the center line of the circular hole on the holder 21 coincides with the center line of the screw rod 111 , so that the measuring end of the pneumatic displacement sensor 23 and the measuring axis of the present invention are on the same straight line, thereby improving measurement accuracy.

[0027] The operating principle of the present utility model is as follows: first, the pneumatic displacement sensor 23 is fixed, and the push-pull rod 19 is pushed to drive the screw rod 111 and the contact plate 112 of the calibration mechanism to move, so that one side of the contact plate 112 contacts the measuring end of the pneumatic displacement sensor 23, and the slider 13 is fixed by the fastening bolt 114, and the screw rod 111 is further driven to move left and right by rotating the knob 18. When the screw rod 111 moves to the left, it squeezes the measuring end of the pneumatic displacement sensor 23, and the moving distance of the screw rod 111 is obtained through the scale line, and the distance value is compared with the measured value of the pneumatic displacement sensor 23. The difference is the measurement error of the pneumatic displacement sensor 23.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic displacement sensor calibration device, comprising a calibration mechanism and a fixing mechanism, wherein the fixing mechanism is mounted on the calibration mechanism, and characterized in that: The calibration mechanism includes a base (11), a slide (12), a slider (13), a support rod (14), a fixed seat (15), a connecting rod (16), a sleeve (17), a knob (18), a push-pull rod (19), a collar (110), a screw rod (111) and a contact plate (112), wherein the slide (12) is opened at the top of the base (11), the slider (13) is slidably connected in the slide (12), the support rod (14) is fixedly arranged at the top of the slider (13), the fixed seat (15) is welded to the top of the support rod (14), the sleeve (17) is installed on the connecting rod (16), the knob (18) is rotatably connected to one side of the sleeve (17), and the push-pull rod (19) is welded to the slider (13) On the top side, the collar (110) is fixedly connected to the top of the push-pull rod (19), the screw rod (111) passes through the sleeve (17) and does not contact the sleeve (17), a threaded hole is provided on the knob (18), the knob (18) is threadedly connected to the screw rod (111), the screw rod (111) is slidably connected to the inner side of the collar (110), the outer wall of the screw rod (111) is provided with a strip groove parallel to the center line, a limit strip is installed on the collar (110), the limit strip matches the strip groove on the screw rod (111), the contact plate (112) is fixedly connected to one end of the screw rod (111), and scale lines are provided on the base (11) and the outer wall of the knob (18).

2. A pneumatic displacement sensor calibration device according to claim 1, characterized in that: A fastening bolt (114) is installed on the slider (13).

3. The pneumatic displacement sensor calibration device according to claim 1, characterized in that: The screw rod (111) is provided with a limit plate (113) at one end thereof in accordance with the contact plate (112).

4. The pneumatic displacement sensor calibration device according to claim 1, characterized in that: The fixing mechanism comprises a card seat (21), a clamp (22) and a pneumatic displacement sensor (23); the card seat (21) is fixedly connected to the top of the base (11); a circular hole is provided on the card seat (21); the clamp (22) is mounted on the circular hole of the card seat (21); and the pneumatic displacement sensor (23) is clamped on the clamp (22).

5. The pneumatic displacement sensor calibration device according to claim 4, characterized in that: The center line of the circular hole on the holder (21) coincides with the center line of the screw rod (111).

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