Automatic measuring device for coating of insulator

Abstract

The invention discloses an insulator coating automatic measuring device, and relates to the technical field of insulator detection, the insulator coating automatic measuring device comprises a sunken tray, the middle part of the sunken tray sinks inwards from one side to the other side, and the size of the side part of the sunken tray is matched with the size of the end face of a porcelain skirt of an insulator; the supporting frame is provided with a supporting face, and the sunken tray is rotationally connected to the supporting face; the supporting frame is further provided with a driving assembly, a top measuring assembly and a bottom measuring assembly. The driving assembly is used for driving the sunken tray to rotate. The top measuring assembly is positioned above the supporting surface and is used for detecting the thickness of a plating layer at a steel foot of the insulator; and the bottom measuring assembly is positioned below the supporting surface and is used for detecting the thickness of a plating layer at the steel cap of the insulator. With the adoption of the scheme, the insulator is inversely placed on the sunken tray, so that the thickness of the zinc coating of the insulator can be rapidly and automatically measured, and the automatic detection of the coating of a predetermined number of measuring points is completed.

Description

Technical Field

[0001] The invention relates to the technical field of insulator detection, and in particular to an automatic measuring device for insulator coating. Background Art

[0002] Insulator products involve many technical indicators such as shape, size, mechanical properties, material properties, electrical properties, etc. In the process of insulator production and use, these parameters are the key parameters that manufacturers and users are more concerned about.

[0003] Usually, in order to ensure the reliable performance of the insulator product, a large number of insulator products need to be sampled and tested regardless of whether the product leaves the factory or is accepted by the user. The parameters of the test items involved will cover all the parameters that describe the performance of the insulator products mentioned above. Among them, the measurement of the thickness of the galvanized layer is a relatively conventional and frequently carried out test item. At present, in actual production, it is generally carried out manually using a handheld coating tester. Among them, the method of using the eddy current test principle for coating detection is the most commonly used method. However, since the insulator coating detection requires the steel cap and steel foot of each insulator to be measured, and each insulator needs to be measured at least 10 measuring points. Therefore, manual coating measurement has problems such as large measurement errors, the measurement process is highly affected by the technical level of personnel, high labor intensity, long test time, and low degree of automation, which greatly consumes the physical strength of the detection personnel. Therefore, there is an urgent need for an automated device that can realize automated insulator coating detection tests. Summary of the invention

[0004] The present invention aims to solve the deficiencies of the prior art and to provide an automatic measuring device for insulator coating. By adopting the present solution, the insulator is placed upside down on a sunken tray, so that the thickness of the insulator zinc coating can be quickly and automatically measured, and the automatic coating detection of a predetermined number of measuring points can be completed.

[0005] The present invention is achieved through the following technical solutions:

[0006] An automatic measuring device for insulator coating, comprising:

[0007] A sunken tray, wherein the middle portion of the sunken tray is sunken from one side to the other side, and the side portion of the sunken tray is matched with the size of the porcelain skirt end surface of the insulator; and a first through hole is provided in the middle portion of the sunken tray;

[0008] A support frame, wherein the support frame has a support surface, the sunken tray is rotatably connected to the support surface and can rotate around its own axis; a second through hole is provided in the middle of the support surface;

[0009] The insulator is placed upside down on the sunken side of the sunken tray, and the steel cap of the insulator passes downward through the first through hole and the second through hole in sequence, and extends out from the second through hole;

[0010] The support frame is also equipped with a driving assembly, a top measuring assembly and a bottom measuring assembly. The driving assembly is used to drive the sunken tray to rotate; the top measuring assembly is located above the supporting surface and is used to detect the coating thickness at the insulator steel foot; the bottom measuring assembly is located below the supporting surface and is used to detect the coating thickness at the insulator steel cap.

[0011] Compared with the prior art, manual coating measurement has the problems of large measurement error, high degree of influence of personnel's technical level in the measurement process, high labor intensity, long test time, low degree of automation, etc. The present invention provides an automatic coating measurement device for insulators. By adopting this scheme, the insulator is placed upside down on a sunken tray, which can realize the rapid automatic measurement of the thickness of the zinc coating of the insulator and complete the automatic coating detection of a predetermined number of measuring points. In the specific scheme, it includes a sunken tray for supporting the insulator, the middle part of the sunken tray is sunken inward, and the center has a through hole, so that when the insulator is placed upside down on the sunken tray, the end of the insulator porcelain skirt is supported by the sunken part, so that the insulator is stably placed; the support frame is provided with a support surface, and the sunken tray is rotatably connected to the support surface, so that the sunken tray can be driven to rotate around its own axis under the drive of the driving component, and the supported insulator rotates accordingly; during the rotation of the insulator, a plurality of measuring points can be collected at the steel foot and steel cap of the insulator through the top measuring component and the bottom measuring component, and the thickness of the zinc coating can be measured.

[0012] In order to simplify the transmission mode, and only need to rotate at a relatively low speed to complete the measurement of several measuring points, the concave sunken part is conical, and the driving assembly includes a first support column and a rotating motor, the first support column is fixed on the support frame, and is used to support the rotating motor; the output end of the rotating motor is provided with a conical friction wheel, the conical friction wheel is located below the sunken tray, and the side of the conical friction wheel is connected to the other side of the sunken tray by friction transmission, and is used to drive the sunken tray to rotate. In this scheme, the output end of the rotating motor is provided with a conical friction wheel, the concave sunken part of the sunken tray is conical, and is adapted to the side wall slope of the conical friction wheel, and the contact surfaces of the two are treated to increase the friction force, so that the sunken tray can be driven to rotate by controlling the rotation of the conical friction wheel; during the rotation of the sunken tray, the speed does not need to be too high to complete the measurement of several measuring points; through the friction transmission method, not only can the rapid installation of the device be achieved, but also the maintenance complexity and failure problems of traditional transmission methods such as gears and transmission belts can be avoided. It is also convenient to replace trays with different hole diameters to accommodate samples of different specifications.

[0013] In order to further reduce the rotational resistance of the sunken tray and improve the efficiency of friction transmission, the support surface includes a support ring, and the support ring includes an outer ring and an inner ring coaxially arranged from the outside to the inside, and there is an annular gap between the outer ring and the inner ring, and a number of conical guide rollers are evenly distributed along the length direction of the annular gap, and the axis of the conical guide roller is provided with a rotating shaft, and the two ends of the rotating shaft are respectively rotatably connected to the outer ring and the inner ring, and can rotate along its own axis; a number of the conical guide rollers are used to support the sunken tray, and the side of the conical guide roller is rotatably connected to the bottom of the sunken tray. In this scheme, the support ring includes an inner ring and an outer ring, and the outer ring is fixed on the support frame, and a number of inclined conical guide rollers are evenly distributed between the inner ring and the outer ring. The conical guide rollers are free to rotate around their own axis through the rotating shaft, so that the upper side of the conical guide roller extends out of the support ring and supports the sunken tray, so that the sunken tray rotates on the number of conical guide rollers, thereby reducing the rotational resistance.

[0014] To adapt to insulators of different sizes, the diameters of the first through hole and the second through hole are both greater than or equal to the diameter of the steel cap of an insulator of the largest specification.

[0015] In order to realize the detachable connection of the cylindrical measuring rod, the top measuring assembly and the bottom measuring assembly both include a measuring rod clamping piece, and the measuring rod clamping piece is used to clamp the cylindrical measuring rod.

[0016] After the measuring rod is installed, it cannot be completely guaranteed that the end of the probe can be perpendicular to the measured surface when measuring the coating. For example, accuracy errors occur when installing the measuring rod, such as when the sunken head disk is placed on the support ring, the axis alignment cannot be completely guaranteed. Therefore, in order to ensure that the end of the probe is perpendicular to the measured surface and improve the detection accuracy, the measuring rod clamping member includes a connecting frame, and the connecting frame is circumferentially arranged with a plurality of clamping plates, one end of the clamping plate extends in a direction away from the connecting frame; an elastic member is provided on the inner side surface of one end of the extending clamping plate; the inner sides of one ends of the plurality of clamping plates clamp the circumference of the cylindrical measuring rod through the elastic member. In this solution, the annular clamping plate clamps the cylindrical measuring rod in the circumferential direction. When the end of the cylindrical measuring rod is pressed against the measured surface, if the measuring head is not perpendicular to the measured surface, appropriate pressure continues to be applied. Under the action of the elastic member, the cylindrical measuring rod will have a slight directional deflection, thereby automatically adjusting the direction and maintaining perpendicularity with the measured surface to ensure the accuracy of the measurement data.

[0017] In order to facilitate the direction adjustment of the cylindrical measuring rod, the elastic member is a spring sheet, and the spring sheet includes a fixed section, a first arc section and an inclined section connected in sequence, and the fixed section is attached and fixed to the inner side of the clamping plate;

[0018] One end of the first arc segment is connected to the end of the fixed segment close to one end of the clamping plate, the other end of the first arc segment is bent toward the end of the fixed segment away from one end of the clamping plate, and the first arc segment clamps the cylindrical measuring rod through its arc vertex away from the clamping plate;

[0019] One end of the inclined section is connected to the other end of the first arc section, and the other end of the inclined section is inclined toward the clamping plate. In this solution, the spring sheet includes a fixed section, a first arc section and an inclined section connected in sequence, the fixed section is used to be fixed on the clamping plate, the first arc section is used to provide an arc vertex, so that clamping is performed through the vertex part to reduce the clamping area, so that the direction of the cylindrical measuring rod can be easily adjusted; and the inclined section is used to avoid the tail deviation of the cylindrical measuring rod when the direction is adjusted.

[0020] During the steel cap measurement process, in order to facilitate the adjustment of the probe and realize the measurement of multiple measuring points and multiple insulators, the bottom measurement assembly also includes a second support column and a first telescopic member, wherein the second support column is fixed on the support frame and used to support the first telescopic member, and the first telescopic member is used to drive the measuring rod clamp to move away from or close to the side wall of the insulator steel cap. In this scheme, there is also a first telescopic member, which can be a telescopic cylinder, a linear motor, a hydraulic cylinder, etc., to drive the horizontal extension and retraction of the cylindrical measuring rod, and realize the measurement of the coating thickness of the specified number of measuring points of the measured insulator steel cap through reciprocating telescopic. Among them, considering the different sizes of insulator steel caps of various specifications, the telescopic amount of the electric control telescopic mechanism needs to have telescopic resistance detection control while meeting the maximum telescopic distance. When the telescopic rod is extended forward, a significant increase in resistance is detected, which means that the probe has contacted the measured surface, and the telescopic rod needs to be controlled to stay at this position with a set force and maintain it for a sufficient time. At this time, the probe starts measuring and reading data. After the data is read, one measurement ends, and the telescopic rod retracts and prepares for the next measurement.

[0021] In the process of measuring the steel foot, in order to facilitate the adjustment of the probe and realize the measurement of multiple measuring points and multiple insulators, the top measurement assembly also includes a third support column and a second telescopic member, the third support column is fixed on the support frame, the third support column has a horizontal section, the second telescopic member is fixed at the lower end of the horizontal section, the second telescopic member is vertically telescopic, and is used to drive the measuring rod clamp to move away from or close to the insulator steel foot. In this scheme, there is also a second telescopic member, the second telescopic member can be a telescopic cylinder, a linear motor, a hydraulic cylinder, etc., to drive the vertical extension and retraction of the cylindrical measuring rod, and the coating thickness measurement of the specified number of measuring points of the measured insulator steel foot is realized through reciprocating telescopic. Similarly, considering the different sizes of insulator steel feet of various specifications, the telescopic amount of the electric control telescopic mechanism needs to have telescopic resistance detection control when meeting the maximum telescopic distance. When the telescopic rod is extended forward, a significant increase in resistance is detected, which means that the probe has contacted the measured surface, and the telescopic rod needs to be controlled to stay at this position with a set force and maintain it for a sufficient time. At this time, the probe starts measuring and reading data. After the data is read, one measurement is completed, the telescopic rod retracts and prepares for the next measurement. In addition, the reciprocating movement of the top coated measuring rod takes into account the small size of the steel foot, and the foot rod measurement is often interfered by the porcelain skirt and cannot be measured normally. Therefore, the vertical movement measurement method is adopted to measure only the upper end surface of the steel foot.

[0022] In order to ensure that the measuring points are evenly distributed on the end surface of the foot ball and that the force is evenly applied, and to avoid the position deviation of the measuring points after multiple measurements, the top measuring assembly further includes a connecting rod assembly, the connecting rod assembly includes a horizontal rod, and the output end of the second telescopic member is connected to the middle of the horizontal rod;

[0023] The two ends of the horizontal rod are respectively connected with a first oblique rod and a second oblique rod, the lower ends of the first oblique rod and the second oblique rod are inclined towards each other, and the angles between the first oblique rod and the second oblique rod and the horizontal rod are adjustable;

[0024] The lower end of the first inclined rod is connected to the measuring rod clamp, and the lower end of the second inclined rod is connected to a counterweight. In this scheme, due to the particularity of the structural size of the steel foot, it is often impossible to measure the position of the foot rod. Therefore, the measuring points can only be concentrated on the cross-section of the foot ball; therefore, in order to evenly distribute a sufficient number of measuring points on a very small end face, it is necessary to use an inclined probe to measure the end face of the foot ball to ensure the verticality between the probe and the end face of the foot ball; secondly, in order to ensure uniform force and avoid the position deviation of the measuring point after multiple measurements, a connecting rod assembly is also set, the connecting rod assembly includes a horizontal rod, a first inclined rod and a second inclined rod, the measuring rod clamp is fixed on the first inclined rod, and the counterweight is fixed on the second inclined rod, so that the force can be uniform; wherein, before the connecting rod assembly is locked, the length and position of the horizontal rod are adjustable, and the angles between the first inclined rod, the second inclined rod and the horizontal rod are adjustable. After adjusting the nuts and the like to achieve fine adjustment of the angle position of the measuring point, the fastening bolts can be tightened to achieve locking. After locking, the telescopic control can achieve even distribution of measuring points on the small circular surface of the end face of the foot ball when the tray rotates.

[0025] As a redundant solution, a buffer spring can be arranged between the first telescopic member and the measuring rod clamping member, and between the second telescopic member and the measuring rod clamping member, to ensure that the measuring probe rod exerts sufficient pressure on the measured surface to ensure the adjustment of the measuring direction and the close contact with the measuring surface; the selection of the spring elastic force should ensure that the measuring probe rod can be fine-tuned and that the pressure on the measuring probe rod is appropriate.

[0026] In addition, it is also equipped with a control and measurement calculation unit. The control and measurement calculation unit controls the rotation of the sunken tray and the extension and retraction of the measuring rod through the microcomputer control system and realizes the transmission of measurement data through the data communication interface of the magnetic eddy current coating tester. The motion control part realizes the horizontal rotation drive of the sunken tray through a servo motor system with an angle encoder. The rotation control needs to divide the circumference into several test positions according to the set number of measuring points. When the tray rotates to the measuring position angle, it can stop rotating and wait for the measurement of one measuring point. After the measurement is completed, the tray continues to be driven to rotate to the next measuring point, and it goes back and forth in sequence until the measurement of all measuring points is completed. Considering that there are many measuring points for the insulator coating, the distance between each measuring point in a single rotation is short, which easily makes the measurement control difficult to achieve. Therefore, we adopt a multi-circle rotation method. The angle between two consecutive measurements can be set arbitrarily as long as all measuring points are not repeated. After the measurement data of each measuring point is uploaded through the communication interface, the average value, maximum value, minimum value, single maximum value, single minimum value and other parameters can be calculated in the computer and can be directly output in EXCEL file format, which is convenient for test personnel to issue reports.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] 1. The present invention provides an automatic measuring device for insulator coating, which can realize the automatic measurement of the thickness of the zinc coating on the steel cap and steel foot of the suspended disc insulator. The measurement process can be automatically completed after one clamping, avoiding the repeated sample handling and clamping process in traditional manual measurement, improving the detection accuracy, greatly reducing the labor intensity in the insulator detection test, and improving the measurement efficiency.

[0029] 2. The present invention provides an automatic measuring device for insulator coating. The measurement process of the galvanized layer of the steel cap relies on the cooperation of a horizontally rotating sinking tray and a horizontally placed telescopic measuring rod to perform measurement, which can completely avoid the measurement error caused by the deviation of the test sample itself, has little interference in the measurement process and high precision.

[0030] 3. The present invention provides an automatic measuring device for insulator coating, in which a horizontally arranged bottom telescopic measuring rod realizes reciprocating measurement of the coating probe, and relies on an automatic direction adjustment mechanism arranged at the top of the measuring rod to realize automatic vertical adjustment of the probe and the measured surface, thereby avoiding measurement errors caused by insufficient verticality between the probe and the measured surface, insufficient clamping force, etc.

[0031] 4. The present invention provides an automatic measuring device for insulator coating, which uses an upper quadrilateral symmetrical connecting rod mechanism, which can not only realize the measurement of the coating on the small end face of the ball, but also ensure the uniformity of the force when the measured surface is crimped, avoid the deformation of the measuring connecting rod mechanism after multiple measurements, and ensure that the measuring point position does not have unnecessary deviation.

[0032] 5. The automatic measuring device for insulator coating provided by the present invention adopts a control and measurement calculation unit which can realize the coordination of the rotating sinking tray, the upper telescopic measuring mechanism, and the lower telescopic measuring mechanism and the transmission calculation of the measurement data. It can directly provide the test data such as the average value, maximum value, minimum value, single maximum value, single minimum value, etc., and can directly output it in the EXCEL file format, which is convenient for the test personnel to issue reports. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0034] Figure 1 A schematic diagram of the structure of the automatic measuring device for insulator coating provided by the present invention;

[0035] Figure 2 A schematic diagram of the structure of the sunken tray provided by the present invention;

[0036] Figure 3 A schematic diagram of the partial structure of the insulator coating automatic measuring device provided by the present invention;

[0037] Figure 4 A schematic diagram of the structure of the measuring rod clamp provided by the present invention;

[0038] Figure 5 A partial schematic diagram of the elastic member provided by the present invention;

[0039] Figure 6 This is a schematic structural diagram of the connecting rod assembly provided by the present invention.

[0040] Marks and corresponding parts names in the attached drawings:

[0041] 1-sunken tray, 2-support frame, 3-insulator, 4-first support column, 5-rotating motor, 6-conical friction wheel, 7-support ring, 701-outer ring, 702-inner ring, 703-conical guide roller, 8-measuring rod clamping piece, 801-connecting frame, 802-clamping plate, 803-elastic piece, 8031-fixed section, 8032-first arc section, 8033-inclined section, 9-second support column, 10-first telescopic piece, 11-third support column, 12-second telescopic piece, 13-horizontal rod, 14-first oblique rod, 15-second oblique rod, 16-counterweight. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0043] Embodiment 1:

[0044] This embodiment 1 provides an automatic measuring device for insulator coating, such as Figure 1-Figure 6 As shown, including:

[0045] A sunken tray 1, wherein the middle portion of the sunken tray 1 is sunken from one side to the other side, and the side portion of the sunken part is matched with the size of the porcelain skirt end surface of the insulator 3; and a first through hole is provided in the middle portion of the sunken part;

[0046] A support frame 2, wherein the support frame 2 has a support surface, and the sunken tray 1 is rotatably connected to the support surface and can rotate around its own axis; a second through hole is provided in the middle of the support surface;

[0047] The insulator 3 is placed upside down on the concave side of the sunken tray 1, and the steel cap of the insulator 3 passes downward through the first through hole and the second through hole in sequence, and extends out from the second through hole;

[0048] The support frame 2 is also equipped with a driving component, a top measuring component and a bottom measuring component. The driving component is used to drive the sunken tray 1 to rotate; the top measuring component is located above the supporting surface and is used to detect the coating thickness at the steel foot of the insulator 3; the bottom measuring component is located below the supporting surface and is used to detect the coating thickness at the steel cap of the insulator 3.

[0049] Compared with the prior art, manual coating measurement has the problems of large measurement error, high degree of influence of personnel's technical level in the measurement process, high labor intensity, long test time, low degree of automation, etc., the present invention provides an automatic coating measurement device for insulators 3. By adopting this solution, the insulator 3 is placed upside down on the sunken tray 1, which can realize rapid and automatic measurement of the thickness of the zinc coating of the insulator 3 and complete the automatic coating detection of a predetermined number of measuring points. The specific scheme includes a sunken tray 1 for supporting the insulator 3. The middle part of the sunken tray 1 is sunken and has a through hole in the center. In this way, when the insulator 3 is placed upside down on the sunken tray 1, the end of the porcelain skirt of the insulator 3 is supported by the sunken part, so that the insulator 3 is stably placed; a supporting surface is provided on the support frame 2, and the sunken tray 1 is rotatably connected to the supporting surface. In this way, under the drive of the driving component, the sunken tray 1 can be driven to rotate around its own axis, and the supported insulator 3 rotates accordingly; during the rotation of the insulator 3, a plurality of measuring points can be collected at the steel foot and the steel cap of the insulator 3 through the top measuring component and the bottom measuring component, and the thickness of the galvanized layer can be measured.

[0050] Embodiment 2:

[0051] This embodiment 2 is further limited on the basis of embodiment 1, such as Figure 3 As shown, a friction transmission method is provided.

[0052] In order to simplify the transmission method and only require a relatively low rotation speed to complete the measurement of several measuring points, the concave sunken part is conical, and the driving assembly includes a first support column 4 and a rotating motor 5. The first support column 4 is fixed on the support frame 2 and is used to support the rotating motor 5; the output end of the rotating motor 5 is provided with a conical friction wheel 6, and the conical friction wheel 6 is located below the sunken tray 1, and the side of the conical friction wheel 6 is frictionally connected to the other side of the sunken tray 1, and is used to drive the sunken tray 1 to rotate. In this solution, the output end of the rotating motor 5 is provided with a conical friction wheel 6, the concave sunken part of the sunken tray 1 is conical, and is adapted to the side wall slope of the conical friction wheel 6, and the contact surfaces of the two are treated to increase the friction force, so that the sunken tray 1 can be driven to rotate by controlling the rotation of the conical friction wheel 6; during the rotation of the sunken tray 1, the speed does not need to be too high to complete the measurement of several measuring points; through the friction transmission method, not only can the rapid installation of the device be achieved, but also the maintenance complexity and failure problems of traditional gear, transmission belt and other transmission methods can be avoided. It is also convenient to replace trays with different apertures to adapt to test pieces of different specifications.

[0053] In order to further reduce the rotational resistance of the sunken tray 1 and improve the efficiency of the friction transmission, the supporting surface includes a supporting ring 7, and the supporting ring 7 includes an outer ring 701 and an inner ring 702 which are coaxially arranged from the outside to the inside, and there is an annular gap between the outer ring 701 and the inner ring 702, and a plurality of conical guide rollers 703 are evenly distributed along the length direction of the annular gap, and the conical guide roller 703 has a rotating shaft on its axis, and the two ends of the rotating shaft are respectively rotatably connected to the outer ring 701 and the inner ring 702, and can rotate along its own axis; the plurality of conical guide rollers 703 are all used to support the sunken tray 1, and the side surfaces of the conical guide rollers 703 are rotatably connected to the lower side of the sunken tray 1. In this solution, the support ring 7 includes an inner ring 702 and an outer ring 701. The outer ring 701 is fixed on the support frame 2. A number of inclined conical guide rollers 703 are evenly distributed between the inner ring 702 and the outer ring 701. The conical guide rollers 703 are able to rotate freely around their own axes through rotating shafts. In this way, the upper side of the conical guide rollers 703 extends out of the support ring 7 and supports the sunken tray 1, so that the sunken tray 1 rotates on the number of conical guide rollers 703, thereby reducing the rotational resistance.

[0054] In order to adapt to insulators 3 of different sizes, the diameters of the first through hole and the second through hole are both greater than or equal to the diameter of the steel cap of the insulator 3 of the largest specification.

[0055] Embodiment 3:

[0056] This embodiment 3 is further defined on the basis of embodiment 1, such as Figure 4-Figure 6 As described above, a measuring structure for improving the measuring accuracy of a probe is provided.

[0057] In order to realize the detachable connection of the cylindrical measuring rod, the top measuring assembly and the bottom measuring assembly both include a measuring rod clamping member 8, and the measuring rod clamping member 8 is used to clamp the cylindrical measuring rod.

[0058] After the measuring rod is installed, it cannot be completely guaranteed that the end of the probe can be perpendicular to the measured surface when measuring the coating. For example, accuracy errors occur when installing the measuring rod, such as when the sunken head disk is placed on the support ring 7, the axis alignment cannot be completely guaranteed. Therefore, in order to ensure that the end of the probe is perpendicular to the measured surface and improve the detection accuracy, the measuring rod clamping member 8 includes a connecting frame 801, and the connecting frame 801 is circumferentially evenly distributed with a plurality of clamping plates 802, one end of the clamping plate 802 extends in a direction away from the connecting frame 801; the inner side surface of one end of the clamping plate 802 is provided with an elastic member 803; the inner sides of one end of the plurality of clamping plates 802 clamp the circumference of the cylindrical measuring rod through the elastic member 803. In this solution, the annular clamping plate 802 clamps the cylindrical measuring rod in the circumferential direction. When the end of the cylindrical measuring rod is pressed against the measured surface, if the measuring head is not perpendicular to the measured surface, appropriate pressure continues to be applied. Under the action of the elastic member 803, the cylindrical measuring rod will slightly deflect in direction, thereby automatically adjusting the direction and maintaining perpendicularity to the measured surface to ensure the accuracy of the measurement data.

[0059] In order to facilitate the direction adjustment of the cylindrical measuring rod, the elastic member 803 is a spring sheet, which includes a fixed section 8031, a first arc section 8032 and an inclined section 8033 connected in sequence, and the fixed section 8031 ​​is attached and fixed to the inner side of the clamping plate 802;

[0060] One end of the first arc segment 8032 is connected to the end of the fixed segment 8031 ​​close to the clamping plate 802, and the other end of the first arc segment 8032 is bent toward the end of the fixed segment 8031 ​​away from the clamping plate 802, and the first arc segment 8032 clamps the cylindrical measuring rod through its arc vertex away from the clamping plate 802;

[0061] One end of the inclined section 8033 is connected to the other end of the first arc section 8032, and the other end of the inclined section 8033 is inclined toward the direction close to the clamping plate 802. In this solution, the spring sheet includes a fixed section 8031, a first arc section 8032 and an inclined section 8033 connected in sequence, the fixed section 8031 ​​is used to be fixed on the clamping plate 802, the first arc section 8032 is used to provide an arc vertex, so as to clamp through the vertex part to reduce the clamping area, so that the direction of the cylindrical measuring rod can be adjusted easily; and the inclined section 8033 is used to avoid the tail deviation of the cylindrical measuring rod when the direction is adjusted.

[0062] In the process of measuring the steel cap, in order to facilitate the adjustment of the probe and realize the measurement of multiple measuring points and multiple insulators 3, the bottom measurement assembly also includes a second support column 9 and a first telescopic member 10. The second support column 9 is fixed on the support frame 2 and is used to support the first telescopic member 10. The first telescopic member 10 is used to drive the measuring rod clamp 8 to move away from or close to the side wall of the steel cap of the insulator 3. In this scheme, there is also a first telescopic member 10. The first telescopic member 10 can be a telescopic cylinder, a linear motor, a hydraulic cylinder, etc., to drive the horizontal extension and retraction of the cylindrical measuring rod, and realize the measurement of the coating thickness of the specified number of measuring points of the steel cap of the measured insulator 3 through reciprocating telescopic. Among them, considering the different sizes of the steel caps of insulators 3 of various specifications, the telescopic amount of the electric control telescopic mechanism needs to have telescopic resistance detection control when meeting the maximum telescopic distance. When the telescopic rod is extended forward, a significant increase in resistance is detected, which means that the probe has contacted the measured surface. The telescopic rod needs to be controlled to stay at this position with a set force and maintain it for a sufficient time. At this time, the probe starts measuring and reading data. After the data is read, one measurement is completed, the telescopic rod is retracted and ready for the next measurement.

[0063] During the steel foot measurement process, in order to facilitate the adjustment of the probe and realize the measurement of multiple measuring points and multiple insulators 3, the top measurement assembly also includes a third support column 11 and a second telescopic member 12, the third support column 11 is fixed on the support frame 2, the third support column 11 has a horizontal section, the second telescopic member 12 is fixed at the lower end of the horizontal section, the second telescopic member 12 is vertically telescopic, and is used to drive the measuring rod clamp 8 to move away from or close to the steel foot of the insulator 3. In this solution, there is also a second telescopic member 12, the second telescopic member 12 can be a telescopic cylinder, a linear motor, a hydraulic cylinder, etc., to drive the vertical extension and retraction of the cylindrical measuring rod, and the coating thickness measurement of the specified number of measuring points of the steel foot of the measured insulator 3 is realized through reciprocating telescopic. Similarly, considering the different sizes of the steel legs of various specifications of insulators, the telescopic amount of the electric control telescopic mechanism must be equipped with telescopic resistance detection control while meeting the maximum telescopic distance. When the telescopic rod is extended, a substantial increase in resistance is detected, which means that the probe has contacted the measured surface. The telescopic rod needs to be controlled to stay in this position with a set force and maintain it for a sufficient time. At this time, the probe starts measuring and reading the data. After the data is read, one measurement is completed, the telescopic rod retracts and prepares for the next measurement. In addition, the reciprocating of the top coated measuring rod takes into account the small size of the steel leg, and the measurement of the leg rod is often interfered by the porcelain skirt and cannot be measured normally. Therefore, the vertical movement measurement method is adopted to measure only the upper end surface of the steel leg.

[0064] In order to ensure that the measuring points are evenly distributed on the end surface of the foot ball and that the force is evenly applied, and to avoid the position deviation of the measuring points after multiple measurements, the top measuring assembly further includes a connecting rod assembly, and the connecting rod assembly includes a horizontal rod 13, and the output end of the second telescopic member 12 is connected to the middle of the horizontal rod 13;

[0065] The two ends of the horizontal rod 13 are respectively connected to a first oblique rod 14 and a second oblique rod 15, the lower ends of the first oblique rod 14 and the second oblique rod 15 are inclined towards each other, and the angles between the first oblique rod 14 and the second oblique rod 15 and the horizontal rod 13 are adjustable;

[0066] The lower end of the first inclined rod 14 is connected to the measuring rod clamp 8, and the lower end of the second inclined rod 15 is connected to a counterweight 16. In this solution, due to the particularity of the steel foot structure size, measurement at the foot rod position is often impossible to achieve. Therefore, the measuring points can only be concentrated on the cross section of the ball of the foot; therefore, in order to evenly distribute a sufficient number of measuring points on a very small end face, an inclined probe is required to measure the end face of the ball of the foot to ensure the verticality between the probe and the end face of the ball of the foot; secondly, in order to ensure uniform force and avoid the position deviation of the measuring points after multiple measurements, a connecting rod assembly is also set, the connecting rod assembly includes a horizontal rod 13, a first inclined rod 14 and a second inclined rod 15, the measuring rod clamp 8 is fixed on the first inclined rod 14, and the counterweight 16 is fixed on the second inclined rod 15, so that the force can be evenly distributed; wherein, before the connecting rod assembly is locked, the length and position of the horizontal rod 13 are adjustable, and the angles between the first inclined rod 14, the second inclined rod 15 and the horizontal rod 13 are adjustable. After adjusting the nuts and the like to achieve fine adjustment of the angle position of the measuring points, the fastening bolts can be tightened to achieve locking. After locking, the telescopic control can achieve uniform distribution of measuring points on the small circular surface of the end face of the ball of the foot when the tray rotates.

[0067] As a redundant solution, buffer springs can be arranged between the first telescopic member 10 and the measuring rod clamping member 8 and between the second telescopic member 12 and the measuring rod clamping member 8 to ensure that the measuring probe rod exerts sufficient pressure on the measured surface to ensure the adjustment of the measuring direction and the close contact with the measuring surface; the selection of the spring elastic force should ensure that the measuring probe rod can be fine-tuned and that the pressure on the measuring probe rod is appropriate.

[0068] In addition, it is also equipped with a control and measurement calculation unit, which controls the rotation of the sunken tray 1 and the extension and retraction of the measuring rod through a microcomputer control system and realizes the transmission of measurement data through the data communication interface of the magnetic eddy current coating tester. Among them, the motion control part realizes the horizontal rotation drive of the sunken tray 1 through a servo motor system with an angle encoder. The rotation control needs to divide the circumference into several test positions according to the set number of measuring points. When the tray rotates to the measuring position angle, it can stop rotating and wait for the measurement of one measuring point. After the measurement is completed, the tray continues to be driven to rotate to the next measuring point, and reciprocates in sequence until the measurement of all measuring points is completed. Considering that there are many measuring points of the insulator 3 coating, the distance between each measuring point in a single rotation is short, which easily makes the measurement control difficult to achieve. Therefore, we adopt a multi-rotation method. The angle between two consecutive measurements can be set arbitrarily as long as all measuring points are not repeated. After the measurement data of each measuring point is uploaded through the communication interface, the average value, maximum value, minimum value, single maximum value, single minimum value and other parameters can be calculated in the computer and can be directly output in the EXCEL file format, which is convenient for the test personnel to issue a report.

[0069] How this solution works:

[0070] First, the insulator 3 is placed upside down on the sunken tray 1, and the porcelain skirt of the insulator 3 is supported by the sunken tray 1, and the steel cap of the insulator 3 extends downward from the support ring 7; then, the conical friction wheel 6 is controlled to rotate by the rotating motor 5, and the sunken tray 1 and the insulator 3 are driven to rotate by friction transmission; when the sunken tray 1 rotates to the measuring position angle, it can stop rotating and wait for the measurement of a measuring point. At this time, the first telescopic member 10 and the second telescopic member 12 are synchronously controlled to extend, so that the probes of the top measuring assembly and the bottom measuring assembly are extended, and the probe of the top measuring assembly is pressed on the end face of the ball of the steel foot, and the probe of the bottom measuring assembly is pressed on the side wall of the steel cap. If the end face of the probe is not perpendicular to the measured surface, continue to apply appropriate pressure. Under the action of the elastic member 803, the cylindrical measuring rod will have a slight directional deflection, thereby automatically adjusting the direction. The telescopic amount of the electric control telescopic mechanism must also have telescopic resistance detection control when the maximum telescopic distance is met. When the telescopic rod is extended forward, a significant increase in resistance is detected, which means that the probe has contacted the measured surface, so as to maintain perpendicularity to the measured surface to ensure the accuracy of the measurement data. The telescopic rod needs to be controlled to stay in this position with a set force and maintain it for a sufficient time. At this time, the probe starts measuring and reading data. After the data is read, a measurement is completed, and the telescopic rod retracts and prepares for the next measurement. Considering that there are many measuring points on the insulator 3 coating, the distance between each measuring point in a single rotation is short, which easily makes measurement control difficult to achieve. Therefore, a multi-rotation method is adopted, and the angle between two consecutive measurements can be set arbitrarily as long as all measuring points are ensured not to be repeated.

[0071] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic measuring device for insulator coating, characterized in that: include: A sunken tray (1), wherein the middle portion of the sunken tray (1) is sunken from one side to the other side, and the side portion of the sunken portion is matched with the size of the porcelain skirt end surface of the insulator (3); and a first through hole is provided in the middle portion of the sunken portion; A support frame (2), the support frame (2) having a support surface, the sunken tray (1) being rotatably connected to the support surface and being able to rotate around its own axis; a second through hole is provided in the middle of the support surface; The insulator (3) is placed upside down on the concave side of the sunken tray (1), and the steel cap of the insulator (3) passes downward through the first through hole and the second through hole in sequence, and extends out from the second through hole; The support frame (2) is also provided with a driving component, a top measuring component and a bottom measuring component. The driving component is used to drive the sunken tray (1) to rotate; the top measuring component is located above the supporting surface and is used to detect the coating thickness at the steel foot of the insulator (3); the bottom measuring component is located below the supporting surface and is used to detect the coating thickness at the steel cap of the insulator (3).

2. The automatic measuring device for insulator coating according to claim 1, characterized in that: The concave sunken part is conical in shape, and the driving assembly comprises a first support column (4) and a rotating motor (5), wherein the first support column (4) is fixed on the support frame (2) and is used to support the rotating motor (5); the output end of the rotating motor (5) is provided with a conical friction wheel (6), and the conical friction wheel (6) is located below the sunken tray (1), and the side surface of the conical friction wheel (6) is frictionally connected to the other side of the sunken tray (1), and is used to drive the sunken tray (1) to rotate.

3. The automatic measuring device for insulator coating according to claim 2, characterized in that: The support surface comprises a support ring (7), wherein the support ring (7) comprises an outer ring (701) and an inner ring (702) which are coaxially arranged in sequence from the outside to the inside, wherein an annular gap is provided between the outer ring (701) and the inner ring (702), and a plurality of conical guide rollers (703) are evenly distributed along the length direction of the annular gap, wherein a rotating shaft is provided on the axis of the conical guide roller (703), and the two ends of the rotating shaft are respectively rotatably connected to the outer ring (701) and the inner ring (702), and can rotate along its own axis; the plurality of conical guide rollers (703) are all used to support the sunken tray (1), and the side surfaces of the conical guide rollers (703) are rotatably connected to the lower side of the sunken tray (1).

4. The automatic measuring device for insulator coating according to claim 1, characterized in that: The diameters of the first through hole and the second through hole are both greater than or equal to the diameter of the steel cap of the largest specification insulator (3).

5. The automatic measuring device for insulator coating according to claim 1, characterized in that: The top measuring assembly and the bottom measuring assembly both comprise a measuring rod clamp (8), and the measuring rod clamp (8) is used to clamp a cylindrical measuring rod.

6. The automatic measuring device for insulator coating according to claim 5, characterized in that: The measuring rod clamping member (8) comprises a connecting frame (801), wherein the connecting frame (801) is provided with a plurality of clamping plates (802) evenly distributed in a circumferential direction, wherein one end of the clamping plate (802) extends in a direction away from the connecting frame (801); an elastic member (803) is provided on the inner side surface of one end of the extending clamping plate (802); and the inner sides of one end of the plurality of clamping plates (802) clamp the circumference of the cylindrical measuring rod through the elastic member (803).

7. The automatic measuring device for insulator coating according to claim 6, characterized in that: The elastic member (803) is a spring sheet, which includes a fixed section (8031), a first arc section (8032) and an inclined section (8033) connected in sequence, and the fixed section (8031) is attached to and fixed on the inner side of the clamping plate (802); One end of the first arc segment (8032) is connected to an end of the fixed segment (8031) close to one end of the clamping plate (802), and the other end of the first arc segment (8032) is bent toward an end of the fixed segment (8031) away from one end of the clamping plate (802), and the first arc segment (8032) clamps the cylindrical measuring rod through its arc vertex away from the clamping plate (802); One end of the inclined section (8033) is connected to the other end of the first arc section (8032), and the other end of the inclined section (8033) is inclined in a direction close to the clamping plate (802).

8. The automatic measuring device for insulator coating according to claim 5, characterized in that: The bottom measuring assembly further comprises a second supporting column (9) and a first telescopic member (10), wherein the second supporting column (9) is fixed on the supporting frame (2) and is used to support the first telescopic member (10), and the first telescopic member (10) is used to drive the measuring rod clamping member (8) to move in a direction away from or close to the side wall of the steel cap of the insulator (3).

9. The automatic measuring device for insulator coating according to claim 5, characterized in that: The top measuring assembly further comprises a third supporting column (11) and a second telescopic member (12), wherein the third supporting column (11) is fixed on the supporting frame (2), the third supporting column (11) has a horizontal section, the second telescopic member (12) is fixed at the lower end of the horizontal section, the second telescopic member (12) is telescopic in the vertical direction, and is used to drive the measuring rod clamping member (8) to move in a direction away from or close to the steel foot of the insulator (3).

10. The automatic measuring device for insulator coating according to claim 9, characterized in that: The top measurement assembly further comprises a connecting rod assembly, wherein the connecting rod assembly comprises a horizontal rod (13), and the output end of the second telescopic member (12) is connected to the middle part of the horizontal rod (13); The two ends of the horizontal rod (13) are respectively connected to a first oblique rod (14) and a second oblique rod (15); the lower ends of the first oblique rod (14) and the second oblique rod (15) are inclined towards each other, and the angles between the first oblique rod (14) and the second oblique rod (15) and the horizontal rod (13) are adjustable; The lower end of the first inclined rod (14) is connected to the measuring rod clamp (8), and the lower end of the second inclined rod (15) is connected to a counterweight (16).

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