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CN-122017434-A - Test tool for eddy current sensor

CN122017434ACN 122017434 ACN122017434 ACN 122017434ACN-122017434-A

Abstract

The invention discloses a test fixture for an eddy current sensor in the field of sensor detection, which comprises a bottom plate, wherein a plurality of mutually parallel transverse convex strips are arranged on the bottom plate, a positioning mechanism is arranged on the bottom plate corresponding to each convex strip, the positioning mechanism comprises a plurality of groups of positioning components which are distributed at intervals along the length direction of the corresponding convex strip, each group of positioning components comprises positioning grooves and fixing blocks which are respectively positioned at the front side and the rear side of the corresponding convex strip, the eddy current sensor comprises a stator and a rotor and a cylinder penetrating piece, a wire harness is arranged between the stator and the rotor and positioned through the positioning grooves, the cylinder penetrating piece is positioned through the fixing blocks, and the wire harness is routed from the upper side of the convex strip and is connected with the convex strip through a plurality of positioning buckles. The invention is a universal test tool, and has the advantages of simultaneously taking test strength and characteristics into consideration, carrying out lightweight design, and meeting the requirement of on-line monitoring of the amplitude of the sensor.

Inventors

  • SUN JIAYUAN
  • MIN XIANG

Assignees

  • 江苏奥力威传感高科股份有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (9)

  1. 1. A test fixture for eddy current sensor, its characterized in that, including the bottom plate, be provided with a plurality of horizontal sand grip that are parallel to each other on the bottom plate, correspond every sand grip on the bottom plate and all be provided with positioning mechanism, positioning mechanism includes a plurality of groups along corresponding sand grip length direction interval distribution's locating component, every group positioning component all includes constant head tank and fixed block that are located respectively both sides around corresponding sand grip, eddy current sensor includes stator and rotor and wears the jar spare, stator and rotor are equipped with the pencil between wearing the jar spare, stator and rotor are fixed a position through the constant head tank, wear jar spare through the fixed block location, the pencil is walked the line from the sand grip upside and the pencil is connected with the sand grip through a plurality of location buckles.
  2. 2. The test fixture for the eddy current sensor according to claim 1, wherein the positioning groove is formed in the bottom plate, the depth of the positioning groove is smaller than the thickness of the bottom plate, the positioning groove comprises an upper groove body and a lower groove body, the upper groove body comprises a main body groove and an embedded groove which are communicated with each other, the depth of the embedded groove is larger than that of the main body groove, the periphery of the main body groove is arc-shaped, the embedded groove is rectangular, the periphery of the lower groove body is circular, the main body groove is overlapped with the central axis of the lower groove body, the main body groove is vertically arranged above the lower groove body, the outer diameter of the main body groove is larger than the outer diameter of the lower groove body, three side bosses distributed at intervals along the circumferential direction are arranged on the bottom wall of the lower end of the main body groove, the center of the bottom wall of the lower groove body is provided with a center boss, and the radial distances of each side boss and the center boss are equal.
  3. 3. The test fixture for the eddy current sensor according to claim 2, wherein the side bosses and the center boss are circular, a first through hole penetrating through the bottom plate is vertically formed in the center of the side boss, a second through hole penetrating through the bottom plate is vertically formed in the center of the center boss, threads are formed in the inner walls of the first through hole and the second through hole, and the side bosses are circumferentially distributed around the center boss at equal intervals.
  4. 4. A test fixture for an eddy current sensor according to claim 3, wherein the side bosses are flush with the upper surface of the base plate, and the upper surface of the center boss is lower than the bottom wall of the lower end of the main body groove.
  5. 5. The test fixture for the eddy current sensor according to claims 1-4, wherein the bottom plate is rectangular, a row of through holes three which are distributed at intervals along the length direction of the bottom plate are formed in the bottom plate corresponding to the fixing blocks of each group of positioning components, threads are arranged on the inner walls of the through holes three, the fixing blocks comprise vertical seat plates, two horizontal support plates which are distributed left and right symmetrically are arranged at the lower parts of the vertical seat plates, connecting holes are formed in the support plates in a vertically penetrating mode, the two support plates are respectively and correspondingly arranged with the corresponding two through holes three, each support plate is connected with the bottom plate through a fastener penetrating through the corresponding connecting hole, positioning holes are formed in the vertical seat plates in a penetrating mode, the axes of the positioning holes are parallel to the width direction of the bottom plate, outer convex plates are arranged on the peripheries of the cylinder penetrating components, rubber rings are sleeved on the rear sides of the outer convex plates and are matched with the positioning holes in a penetrating mode, the rubber rings are correspondingly arranged with the inner walls of the positioning holes, the outer convex plates are arranged in a penetrating mode and are arranged in a mode of being close to the vertical mode, and the lower parts of the rubber plates are fixed with the vertical seat plates through bolts.
  6. 6. The test fixture for the eddy current sensor according to claims 1-4, wherein each connecting wire on the wire harness is provided with a positioning buckle, the positioning buckle comprises an outer clamping ring, the outer clamping ring is sleeved on the corresponding connecting wire, a connecting bracket is arranged on the lower side of the outer clamping ring, a positioning cap is arranged on the lower side of the connecting bracket, the lower side of the positioning cap is connected with a positioning head, each positioning head corresponding to each positioning buckle on the convex strip is provided with a limiting jack, the positioning head is matched and inserted into the corresponding limiting jack, and the positioning cap is supported on the convex strip.
  7. 7. The test fixture for the eddy current sensor according to claim 4, wherein the stator and the rotor comprise a rotor piece and a stator piece which are independent of each other, the wire harness is connected with the stator piece and the cylinder penetrating piece, a mounting hole is formed in the center of the rotor piece in a penetrating manner, the rotor piece is correspondingly arranged in the lower groove body, the center boss is upwards matched and inserted into the mounting hole, a second vertically arranged bolt is in threaded connection with the penetrating Kong Erxiang and is tightly pressed against the rotor piece, a gasket is arranged between a bolt seat of the second bolt and the rotor piece, the second bolt penetrates through the gasket, the stator piece is correspondingly supported on three side bosses of the main body groove, a lower protruding body corresponding to the embedded groove is arranged on the lower side of the stator piece, the lower protruding body is matched and embedded into the embedded groove, three side branch parts are respectively supported on the three side bosses, a penetrating hole IV is formed in the side branch parts, each side branch part is in threaded connection with the corresponding penetrating hole IV through a third bolt penetrating through the corresponding penetrating hole, the third bolt compresses the side branch parts, and the corresponding space between the stator piece and the stator piece is correspondingly arranged in the groove, and the stator piece is correspondingly arranged between the stator piece and the gasket.
  8. 8. The test fixture for an eddy current sensor according to any one of claims 1 to 4, wherein three protruding strips are provided, and two adjacent positioning assemblies are located at the front side and the rear side of the corresponding protruding strip along the length direction of the base plate, and the positioning grooves and the fixing blocks are opposite in arrangement direction.
  9. 9. The test fixture for an eddy current sensor according to any one of claims 1 to 4, wherein a plurality of countersunk head fixing holes distributed in a rectangular array are formed in the bottom plate in a penetrating manner, and each countersunk head fixing hole is staggered with each raised line, and a positioning groove and a fixing block of the positioning assembly.

Description

Test tool for eddy current sensor Technical Field The invention belongs to the field of sensor detection, and particularly relates to a test fixture for an eddy current sensor. Background As a core motor component, an eddy current sensor usually requires one to two rounds of DV, PV test, wherein endurance test such as vibration test, high and low temperature endurance test, oil soaking test usually requires 1000 to 2000 hours, and the fluctuation of the eddy current signal amplitude needs to be monitored during the test. The existing eddy current sensor test fixture has the following defects that (1) the existing eddy current sensor test fixture is low in compatibility, and various fixtures are required for different tests, such as vibration tests, high-low temperature endurance tests, oil soaking tests and the like, and the existing eddy current sensor test fixture is not centralized in function, cannot be compatible and is poor in universality. (2) The amplitude fluctuation of the eddy current signal cannot be monitored in the test process. (3) The structure is too complicated and heavy, and the light weight requirement cannot be met. Disclosure of Invention The invention aims to provide a test tool for an eddy current sensor, which can monitor the fluctuation of the amplitude of an eddy current signal in the test process, is designed for the performance test of the eddy current sensor, has the advantages of taking the test strength and the characteristics into consideration, simultaneously carrying out light-weight design, and meeting the requirement of on-line monitoring of the amplitude of the sensor. The invention aims to realize the test fixture for the eddy current sensor, which comprises a bottom plate, wherein a plurality of mutually parallel transverse convex strips are arranged on the bottom plate, a positioning mechanism is arranged on the bottom plate corresponding to each convex strip, the positioning mechanism comprises a plurality of groups of positioning components which are distributed at intervals along the length direction of the corresponding convex strip, each group of positioning components comprises positioning grooves and fixing blocks which are respectively positioned at the front side and the rear side of the corresponding convex strip, the eddy current sensor comprises a stator and a cylinder penetrating piece, a wire harness is arranged between the stator and the cylinder penetrating piece, the stator is positioned through the positioning grooves, the cylinder penetrating piece is positioned through the fixing blocks, the wire harness runs from the upper side of the convex strip, and the wire harness is connected with the convex strip through a plurality of positioning buckles. When the intelligent electric vortex sensor is used, a plurality of rows of electric vortex sensors are positioned and fixed on the bottom plate along each raised line, each electric vortex sensor consists of a stator and a rotor connected through a wire harness and a cylinder penetrating piece, the stator and the rotor of two adjacent electric vortex sensors on the left side and the right side of each row of electric vortex sensor are opposite in arrangement direction, the electric vortex sensors are arranged in a staggered mode front and back, reasonable layout is achieved, space is saved, the cylinder penetrating pieces are fixed through fixing blocks on the bottom plate, the rotor pieces are matched and installed in the lower groove body and are fixed through bolts, the stator pieces are matched and installed on the upper groove body and are fixed through bolts, the embedded grooves are used for positioning the stator pieces, the axes of the rotor pieces, the stator pieces, the central boss, the lower groove body and the main groove are coincident, the wire harness is positioned with the raised lines through positioning buckles, the raised lines support the wire harness, the wire harness is simulated to be subjected to corresponding test environment acting force, the bottom plate can be fixed on the rack through bolts penetrating through the countersunk fixing holes to simulate vibration test environment, or the bottom plate can be directly tested in high-low temperature environment, the high-temperature environment and the bubble oil ring is tested, functions are concentrated, and compatibility can be compatible. When the invention is used, the rotor pieces and the stator pieces of the plurality of eddy current sensors are sequentially arranged in the positioning grooves along the convex strips, the cylinder penetrating pieces are fixed on the fixed blocks, the arrangement directions of the stator pieces and the cylinder penetrating pieces of the two eddy current sensors which are adjacent left and right on each convex strip are opposite, and then the wire harness is connected between the stator pieces and the cylinder penetrating pieces which are mutually corresponding. Compared with the prior art,