CN216284092U - Calibration device for pressure sensor - Google Patents
Calibration device for pressure sensor Download PDFInfo
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- CN216284092U CN216284092U CN202122354365.2U CN202122354365U CN216284092U CN 216284092 U CN216284092 U CN 216284092U CN 202122354365 U CN202122354365 U CN 202122354365U CN 216284092 U CN216284092 U CN 216284092U
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Abstract
The utility model discloses a calibrating device for a pressure sensor, which belongs to the technical field of calibrating devices and comprises a base, a speed reducer, a servo motor, a rotating shaft, a first threaded part, a second threaded part, a nut block and a tightening sleeve, wherein a blind hole through which the horizontal translation kinetic energy of the end part of the rotating shaft freely passes is formed in the tightening sleeve, a standard pressure sensor and a pressure sensor to be measured are respectively arranged at two ends of the base in the length direction, and the two tightening sleeves respectively correspond to the standard pressure sensor and the pressure sensor to be measured. Through the rotation of axis of rotation for two nut pieces drive two respectively in step and support tight cover removal, and support respectively and await measuring pressure sensor and standard pressure sensor, and the size and the form of the effort that standard pressure sensor and the pressure sensor that awaits measuring receive like this are the same, and only opposite direction between them, consequently through observing the pressure data that standard pressure sensor and the pressure sensor that awaits measuring fed back, can judge the detection precision of the pressure sensor that awaits measuring.
Description
Technical Field
The utility model relates to the technical field of calibration devices, in particular to a calibration device for a pressure sensor.
Background
A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal into a usable output electrical signal according to a certain rule. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. Pressure sensors can be classified into gauge pressure sensors, differential pressure sensors, and absolute pressure sensors according to different types of test pressures.
Pressure sensor is in the manufacturing process, generally can carry out the precision calibration to pressure sensor, namely, use calibration equipment to detect pressure sensor's precision, through the retrieval, chinese patent No. CN210513532U discloses a calibrating device for pressure sensor, including base and pulling force title, top surface one side of base has servo electric cylinder through screw fixed mounting, there is the lifter plate through screw fixed mounting on servo electric cylinder's the output end terminal, be provided with lateral shifting mechanism between two mounting panels, there is manual jack through screw fixed mounting in the lateral shifting mechanism, the both ends of pulling force title are connected with first link and second link respectively through rope and couple respectively, the top surface opposite side fixed welding of base has the backup pad, the top fixed welding of backup pad has at least four boards of placing, place on the board through bolt and waist shape hole fixed mounting have the L shape baffle.
When the calibration equipment used at present is used for calibrating, the pressure borne by the pressure sensor is displayed through the tension scale, but certain errors can be generated in the form or the size of acting force borne by the pressure sensor and the tension scale, and further the detection precision is low.
Based on this, the present invention has devised a calibration device for a pressure sensor to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a calibration device for a pressure sensor, which aims to solve the problem that when the currently used calibration equipment provided in the background art is used for calibration, the pressure applied to the pressure sensor is displayed by a tension scale, but certain errors are generated in the acting force applied to the pressure sensor and the tension scale in form or size, and the detection precision is low.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a calibrating device for pressure sensor, includes a base, be equipped with the speed reducer on the base, the input shaft of speed reducer is rotated by servo motor drive it, and the drive is connected with the axis of rotation on its output shaft, the length direction both ends of axis of rotation are equipped with screw respectively and revolve to opposite first screw thread portion, second screw thread portion, each threaded sleeve is equipped with the nut piece on first screw thread portion, the second screw thread portion, two each coaxial rigid coupling has the tight cover of support on the nut piece, support the inside blind hole of seting up axis tip horizontal translation kinetic energy and freely passing through of cover, the length direction both ends of base are equipped with standard pressure sensor and the pressure sensor that awaits measuring respectively, two support the tight cover and correspond standard pressure sensor, the pressure sensor that awaits measuring respectively.
In the calibration device for the pressure sensor, the bottom of the nut block is provided with the protrusion, and the base is provided with the clamping groove for clamping the protrusion and capable of horizontally and freely sliding.
In the calibration device for the pressure sensor, a cushion block is fixedly connected to one end, away from the nut block, of the abutting sleeve, and the cushion block is made of brass.
In the calibration device for the pressure sensor, a fixing plate is arranged on the base, and the standard pressure sensor is mounted on the fixing plate.
In the calibration device for the pressure sensor, the pressure sensor to be measured is detachably mounted on the base through the clamping assembly, the clamping assembly comprises a clamping seat connected to the base, an elastic chuck is arranged in the clamping seat, the elastic chuck comprises a cylindrical part and a circular table part which are integrated and coaxial, the outer diameter of the circular table part is sequentially increased in the direction away from the cylindrical part, clamping grooves for clamping the pressure sensor to be measured are coaxially formed in the circular table part, a plurality of strip-shaped notches which extend onto the cylindrical part and penetrate through the clamping grooves are formed in the outer wall of the circular table part along the axial direction of the circular table part in an array manner, a blind hole type mounting cavity for inserting the cylindrical part is formed in the clamping seat, a conical groove which is matched with the shape of the circular table part and is used for clamping the circular table part is further formed in the outer wall of the circular table part, and an air cylinder is horizontally mounted on the clamping seat, and a cylinder rod of the cylinder penetrates into the mounting cavity and is in driving connection with the cylindrical part.
Compared with the prior art, the utility model has the beneficial effects that: rotation through the axis of rotation for two nut pieces drive two respectively in step and support the cover removal, and support respectively and await measuring pressure sensor and standard pressure sensor, the size and the form of standard pressure sensor and the pressure sensor that awaits measuring the effort that receives are the same like this, just opposite direction between them, consequently, through observing standard pressure sensor and the pressure data that awaits measuring pressure sensor and feed back, can judge the detection precision of the pressure sensor that awaits measuring, treat through setting up collet and carry out the centre gripping fixed by measuring pressure sensor, the installation and the change of the pressure sensor that awaits measuring have been made things convenient for like this, be convenient for detect in batches.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the final assembly of the present invention;
FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;
fig. 3 is a schematic structural view of the collet of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-cylinder, 2-clamping seat, 3-cylindrical part, 4-pressure sensor to be measured, 5-abutting sleeve, 6-nut block, 7-first threaded part, 8-servo motor, 9-second threaded part, 10-standard pressure sensor, 11-speed reducer, 12-bulge, 13-clamping groove, 14-base, 15-clamping groove, 16-strip notch, 17-circular table part, 18-conical groove and 19-cushion block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a calibrating device for a pressure sensor comprises a base 14, wherein a speed reducer 11 is arranged on the base 14, an input shaft of the speed reducer 11 is driven by a servo motor 8 to rotate, an output shaft of the speed reducer is connected with a rotating shaft in a driving manner, two ends in the length direction of the rotating shaft are respectively provided with a first threaded part 7 and a second threaded part 9 with opposite thread turning directions, a nut block 6 is sleeved on each thread of the first threaded part 7 and the second threaded part 9, two nut blocks 6 are coaxially and fixedly connected with a propping sleeve 5, a blind hole through which the horizontal translation kinetic energy at the end part of the rotating shaft can freely pass is formed in the propping sleeve 5, two ends in the length direction of the base 14 are respectively provided with a standard pressure sensor 10 and a pressure sensor 4 to be detected, the two propping sleeves 5 respectively correspond to the standard pressure sensor 10 and the pressure sensor 4 to be detected, when detection is carried out, an external power supply is firstly switched on, the servo motor 8 is enabled to rotate, and the speed reducer is driven to rotate, and then drive the axis of rotation and rotate, when the axis of rotation rotates, first screw portion 7 on it, second screw portion 9 drives two nut pieces 6 relative movement respectively, because first screw portion 7, the screw of second screw portion 9 revolves to opposite, make two synchronous relative movement of nut piece 6, and then make two support the cover and move towards pressure sensor and standard pressure sensor to be measured respectively, until the terminal surface of two support the cover respectively supports pressure sensor, standard pressure sensor, pressure sensor to be measured will produce pressure signal and feed back to external control ware at this moment, through observing standard pressure sensor, pressure sensor's pressure data, and then can judge the precision of pressure sensor to be measured.
In this embodiment, the bottom of the nut block 6 is provided with the protruding portion 12, the base 14 is provided with the clamping groove 13 which is used for clamping the protruding portion 12 and can horizontally and freely slide, and the protruding portion 12 slides in the clamping groove 13 and is limited, so that the nut block 6 cannot rotate when being screwed with the first thread portion or the second thread portion.
In this embodiment, the one end rigid coupling that keeps away from the nut piece 6 of tight cover 5 has cushion 19, and cushion 19 is made by the brass material, through setting up cushion 19, makes the wearing and tearing that the tight cover 5 received less like this, in addition because cushion 19 is made by the brass material, makes cushion 19 can have certain ductility, avoids cushion 19 to treat pressure sensor or standard pressure sensor's effort too big, and leads to treating pressure sensor, standard pressure sensor produces the damage.
In this embodiment, a fixing plate is disposed on the base 14, and the standard pressure sensor 10 is mounted on the fixing plate, so that the standard pressure sensor 10 can be fixed on the base 14.
In the embodiment, the pressure sensor 4 to be tested is detachably mounted on the base 14 through a clamping assembly, the clamping assembly comprises a clamping seat 2 connected on the base 14, an elastic chuck is arranged in the clamping seat 2, the elastic chuck comprises an integrated and coaxial cylindrical part 3 and a circular table part 17, the outer diameter of the circular table part 17 is sequentially increased towards the direction far away from the cylindrical part 3, a clamping groove 15 for clamping the pressure sensor 4 to be tested is coaxially arranged on the clamping seat, a plurality of strip-shaped notches 16 which extend onto the cylindrical part 3 and penetrate through the clamping groove 15 are arranged on the outer wall of the circular table part 17 along the axial array of the circular table part, a blind hole type mounting cavity for inserting the cylindrical part 3 is arranged on the clamping seat 2, a conical groove 18 which is matched with the shape of the circular table part 17 and is used for clamping the circular table part 17 is also arranged on the outer wall of the clamping seat, an air cylinder 1 is horizontally mounted on the clamping seat 2, an air cylinder rod of the air cylinder 1 penetrates into the mounting cavity and is in driving connection with the cylindrical part 3, when the pressure sensor that awaits measuring is being installed, at first will await measuring in pressure sensor card goes into centre gripping groove 15, then at start-up cylinder 1, the cylinder pole of cylinder 1 shortens for cylinder portion 3 slides in the installation cavity, make round platform portion 17 and 18 inner walls of taper groove produce the relative slip simultaneously, because be equipped with the bar breach on the outer wall of round platform portion 17, make round platform portion 17 check up the radial inboard elastic shrinkage of navigation, and then make the centre gripping groove can press from both sides the pressure sensor that awaits measuring, and then treat to survey pressure sensor and install fast.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A calibration device for a pressure sensor comprises a base (14) and is characterized in that a speed reducer (11) is arranged on the base (14), an input shaft of the speed reducer (11) is driven by a servo motor (8) to rotate, an output shaft of the speed reducer is connected with a rotating shaft in a driving mode, first threaded portions (7) and second threaded portions (9) with opposite thread turning directions are arranged at two ends of the length direction of the rotating shaft respectively, nut blocks (6) are sleeved on the first threaded portions (7) and the second threaded portions (9) in a threaded mode, abutting sleeves (5) are fixedly connected to two nut blocks (6) in a coaxial mode respectively, blind holes are formed in the abutting sleeves (5) and enable the end portions of the rotating shaft to freely pass through horizontal movement kinetic energy, and standard pressure sensors (10) and pressure sensors (4) to be measured are arranged at two ends of the length direction of the base (14) respectively, the two abutting sleeves (5) respectively correspond to the standard pressure sensor (10) and the pressure sensor (4) to be measured.
2. The calibration device for the pressure sensor according to claim 1, wherein a protrusion (12) is disposed at the bottom of the nut block (6), and a slot (13) for the protrusion (12) to engage and horizontally slide is disposed on the base (14).
3. A calibration device for a pressure sensor according to claim 1, wherein a spacer (19) is fixed to an end of the abutment sleeve (5) remote from the nut block (6), and the spacer (19) is made of brass.
4. Calibration device for a pressure sensor according to claim 1, characterized in that a fixing plate is provided on the base (14), on which fixing plate the standard pressure sensor (10) is mounted.
5. The calibrating device for the pressure sensor according to claim 1, wherein the pressure sensor (4) to be measured is detachably mounted on the base (14) through a clamping assembly, the clamping assembly comprises a clamping seat (2) connected to the base (14), an elastic chuck is arranged in the clamping seat (2), the elastic chuck comprises a cylindrical portion (3) and a circular table portion (17) which are integrated and coaxial, the outer diameter of the circular table portion (17) increases gradually in the direction away from the cylindrical portion (3), a clamping groove (15) for clamping the pressure sensor (4) to be measured is coaxially formed in the circular table portion, a plurality of strip-shaped notches (16) which extend to the cylindrical portion (3) and penetrate through the clamping groove (15) are formed in the outer wall of the circular table portion (17) along the axial array of the clamping groove, and a plurality of strip-shaped notches (16) which are formed in the clamping seat (2) for inserting the cylindrical portion (3) are formed in the clamping seat (2), The blind hole type mounting cavity is further provided with a conical groove (18) which is matched with the shape of the circular table portion (17) and used for clamping the circular table portion (17), the clamping seat (2) is horizontally provided with the air cylinder (1), and an air cylinder rod of the air cylinder (1) penetrates into the mounting cavity and is in driving connection with the cylindrical portion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354365.2U CN216284092U (en) | 2021-09-27 | 2021-09-27 | Calibration device for pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122354365.2U CN216284092U (en) | 2021-09-27 | 2021-09-27 | Calibration device for pressure sensor |
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| CN216284092U true CN216284092U (en) | 2022-04-12 |
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| CN202122354365.2U Active CN216284092U (en) | 2021-09-27 | 2021-09-27 | Calibration device for pressure sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878066A (en) * | 2022-04-22 | 2022-08-09 | 成都飞机工业（集团）有限责任公司 | Pressure measurement correcting device and using method thereof |
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2021
- 2021-09-27 CN CN202122354365.2U patent/CN216284092U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878066A (en) * | 2022-04-22 | 2022-08-09 | 成都飞机工业（集团）有限责任公司 | Pressure measurement correcting device and using method thereof |
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