Enameled round copper wire high-temperature aging test equipment

Abstract

The utility model discloses enameled round copper wire high-temperature aging test equipment, which relates to the technical field of enameled wire high-temperature aging test and comprises a thermal aging test box, a base plate is rotatably connected in the thermal aging test box, a bearing plate is movably clamped on the upper surface of the base plate, and two connecting columns for fixing a sample are movably connected on the upper surface of the bearing plate. The butterfly-shaped screw is rotated upwards to be separated from the clamping connection with a group of limiting grooves formed in the base plate, the limiting is opened, the connecting column can move at the moment, the connecting column moves to apply different degrees of tensile force to the sample, so that the tensile strength change of the enameled wire in a thermal aging environment is detected, and the detection accuracy is improved. The bearing disc, the connecting column, the butterfly screw and the like are all made of high-temperature-resistant materials, the decline condition of the mechanical property of the enameled wire can be evaluated by measuring the maximum tensile force which can be borne by the enameled wire under different aging time and temperature conditions, and an important basis is provided for judging the service life of the materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of enameled wire high temperature aging test, especially relates to enameled copper round wire high temperature aging test equipment. BACKGROUND

[0002] As a key material widely used in electrical equipment such as motors, transformers and electronic components, the performance stability of enameled copper round wire under high temperature environment is crucial. In order to accurately evaluate the aging characteristics of enameled copper round wire when facing high temperature in actual use process, special high temperature aging test equipment is needed.

[0003] In the field of enameled copper round wire high temperature aging test equipment, the following main parts are usually involved:

[0004] 1. Heating system, used to provide stable and adjustable high temperature environment, its heating element is mostly made of nichrome wire, silicon carbide rod, etc., which can realize efficient heating in different temperature intervals.

[0005] 2. Temperature control system, which can accurately control the temperature in the box to ensure that the temperature fluctuation is within a very small range to meet the requirements of different enameled wires for test temperature accuracy, generally using high precision temperature sensor and intelligent control chip to realize.

[0006] 3. Box structure, including inner container and shell, the inner container is commonly made of stainless steel material, such as 304 stainless steel or 316 stainless steel, with good high temperature resistance and corrosion resistance; The shell plays a protective and heat insulation role, filled with rock wool, ceramic fiber and other heat insulation materials in the middle to reduce heat loss.

[0007] At present, in order to realize the effective test of enameled copper round wire high temperature aging characteristics, the industry adopts a variety of equipment and methods. Some equipment simulates high temperature environment simply, places enameled wire on fixed sample holder and observes long time aging at set temperature. Some other equipment has simple temperature cycle function, simulating the influence of temperature fluctuation in actual use on enameled wire.

[0008] However, the above-mentioned implementation still has the following problems: in simulating the actual working conditions of the enameled wire, the traditional equipment can only simulate the limited tensile stress and dynamic rotation that the enameled wire may bear in actual use. In actual application, such as during the operation of a motor, the enameled wire winding will be subjected to tensile force due to mechanical vibration and other factors, and the winding structure inside part of the motor will have a certain degree of rotational motion. However, the existing test equipment lacks the corresponding mechanism, resulting in a deviation between the test results and the actual use, and the performance of the enameled wire under complex working conditions cannot be comprehensively and accurately evaluated. In view of this problem, the present application provides a solution, which uses a device provided with two winding clamps and capable of moving for stretching to test the enameled wire, and sets a sample rotating mechanism. The device can more realistically simulate the actual working conditions of the enameled wire, comprehensively improve the test accuracy, and provide a more reliable basis for performance evaluation and quality improvement of the enameled wire. Content of the utility model

[0009] In view of the deficiencies of the prior art, the enameled copper round wire high-temperature aging test equipment solves the problem that in simulating the actual working conditions of the enameled wire, the traditional equipment can only simulate the limited tensile stress and dynamic rotation that the enameled wire may bear in actual use, and cannot comprehensively and accurately evaluate the performance of the enameled wire under complex working conditions.

[0010] To achieve the above object, the utility model realizes through the following technical scheme:

[0011] The enameled copper round wire high-temperature aging test equipment comprises a heat aging test box, a bottom disc is rotationally connected in the heat aging test box, a bearing disc is movably clamped on the upper surface of the bottom disc, two connecting columns for fixing a test sample are movably connected to the upper surface of the bearing disc, connecting plates are fixedly connected to the annular side surfaces of the two connecting columns, butterfly screws for limiting are threadedly sleeved in the two connecting plates, a group of servo motors are fixedly connected to the lower surface of the bearing disc, a servo motor is fixedly installed on the lower surface of the heat aging test box, and the output shaft of the servo motor is fixedly connected with the bottom disc.

[0012] Preferably, limiting blocks are fixedly connected to the lower surfaces of the two connecting columns, clamping grooves are formed in the upper surface of the heat aging test box, and the clamping grooves are movably connected with the limiting blocks.

[0013] Preferably, a group of limiting grooves are formed in the upper surface of the bearing disc, the limiting grooves are movably sleeved with the two butterfly screws respectively, a group of circular grooves are formed in the upper surface of the bottom disc, and the circular grooves are movably clamped with the group of servo motors respectively.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By rotating the wing screw upwards, it disengages from the set of limiting grooves on the chassis, opening the limit. At this point, the connecting column can move. The movement of the connecting column can apply different degrees of tensile force to the sample, thereby detecting the change in tensile strength of the enameled wire under thermal aging conditions. The bearing plate, connecting column, and wing screw are all made of high-temperature resistant materials. By measuring the maximum tensile force that the enameled wire can withstand under different aging times and temperatures, the degradation of its mechanical properties can be assessed, providing an important basis for judging the service life of the material.

[0016] 2. During the test, the output shaft of the servo motor is started, which drives the fixed chassis to rotate. When the chassis rotates, the clamped bearing plate will also rotate. When the bearing plate rotates, the sample wrapped on the connecting column will also rotate. The rotation ensures that all parts of the sample are heated evenly during the thermal aging process, avoiding inaccurate test results due to uneven heating in some areas. At the same time, it simulates the dynamic working conditions of the sample in actual use, and more realistically reflects the aging of the sample under the combined action of thermal and mechanical stress. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is an exploded view of the overall structure of this utility model;

[0020] Figure 3 This is a structural diagram of the bearing plate of this utility model;

[0021] Figure 4 This is a structural diagram of the connecting column of this utility model.

[0022] Legend: 1. Thermal aging test chamber; 2. Chassis; 3. Bearing plate; 4. Connecting column; 5. Servo motor; 6. Wing screw; 7. Limiting block; 8. Connecting plate; 9. Slot; 10. Limiting groove; 11. Circular groove. Detailed Implementation

[0023] The application embodiment provides the enameled copper round wire high-temperature aging test equipment, effectively solves the problem that the traditional equipment is limited in simulating the tensile stress and dynamic rotation condition that the enameled wire may bear in actual use, and cannot comprehensively and accurately evaluate the performance of the enameled wire under complex working conditions, the device provided with two winding clamps and capable of moving for stretching is used for testing the enameled wire, and a sample rotating mechanism is arranged. The device can more truly simulate the actual working condition of the enameled wire, comprehensively improve the test accuracy, and provide a more reliable basis for performance evaluation and quality improvement of the enameled wire. EMBODIMENT

[0024] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the technical scheme in the application embodiment effectively solves the technical problem that the traditional equipment is limited in simulating the tensile stress and dynamic rotation condition that the enameled wire may bear in actual use, and cannot comprehensively and accurately evaluate the performance of the enameled wire under complex working conditions, and the general idea is as follows:

[0025] In view of the problems in the prior art, the utility model provides enameled copper round wire high-temperature aging test equipment, including heat aging test box 1, heat aging test box 1 is rotationally connected with the bottom disc 2, the upper surface of the bottom disc 2 is movably clamped with the bearing disc 3, the upper surface of the bearing disc 3 is movably connected with two connecting columns 4 for fixing the sample, the annular side surface of the two connecting columns 4 is fixedly connected with the connecting plate 8, the two connecting plates 8 are all threadedly sleeved with the butterfly screw 6 for limiting, the lower surface of the bearing disc 3 is fixedly connected with a group of servo motors 5, the lower surface of the heat aging test box 1 is fixedly installed with the servo motor 5, the output shaft of the servo motor 5 is fixedly connected with the bottom disc 2, in the use process, the sample is wound on the connecting column 4, high-temperature aging test is carried out by starting the heat aging test box 1, the bearing disc 3 is taken out, the sample is fixed by being wound on the two connecting columns 4, the enameled wire is closely wound on the clamp, the state in the actual coil can be simulated, the test result is more representative, the butterfly screw 6 is rotated upwards to make it disengage from the clamping of a group of limiting grooves 10 opened in the bottom disc 2, the limiting is opened, at this moment, the connecting column 4 can move, the connecting column 4 can exert different degrees of tensile force on the sample, so that the tensile strength change of the enameled wire under the heat aging environment is detected, the bearing disc 3, the connecting column 4 and the butterfly screw 6 are all high-temperature resistant materials, the maximum tensile force that the enameled wire can bear under different aging time and temperature conditions is measured, the decay condition of the mechanical property of the enameled wire can be evaluated, and important basis for judging the service life of the material is provided.

[0026] Two connecting columns 4 lower surface are fixedly connected with limiting blocks 7, the upper surface of the heat aging test box 1 is provided with a clamping groove 9, the clamping groove 9 is movably connected with the two limiting blocks 7, the upper surface of the bearing disc 3 is provided with a set of limiting grooves 10, the set of limiting grooves 10 are movably sleeved with the two butterfly screws 6 respectively, the upper surface of the chassis 2 is provided with a set of circular grooves 11, the set of circular grooves 11 are movably clamped with the set of servo motors 5 respectively, in the testing process, the servo motor 5 is started, the output shaft drives the fixed chassis 2 to rotate, the chassis 2 rotates and drives the clamped bearing disc 3 to rotate, the bearing disc 3 rotates and the sample wound on the connecting column 4 also rotates, the rotation makes the sample evenly heated in the heat aging process, avoids the inaccuracy of test results caused by uneven local heating, and simultaneously simulates the dynamic working condition of the sample in actual use, more truly reflects the aging condition of the sample under the combined action of heat and mechanical stress.

[0027] Among them, the heat aging test box 1: provides high-temperature aging environment for enameled copper round wire, is the core component of simulating actual high-temperature working condition, ensures that the test is carried out at the set temperature, and guarantees the test accuracy;

[0028] The chassis 2: supports the bearing disc 3 and rotates with the servo motor 5, drives the bearing disc 3 and the sample to rotate, makes the sample evenly heated, and simulates the actual dynamic working condition;

[0029] The bearing disc 3: places the connecting column 4 and other components, bears the sample, rotates with the chassis 2, and the limiting groove 10 on the surface is also used to limit the butterfly screw 6, which assists in testing;

[0030] The connecting column 4: fixes the sample, applies tensile force to the sample by moving, is used for detecting the change of tensile strength of enameled copper round wire under the heat aging environment, and evaluates the mechanical property;

[0031] The servo motor 5: provides power for the rotation of the chassis 2, drives the bearing disc 3 and the sample to rotate, realizes the uniform heating of the sample and the simulation of the actual dynamic working condition;

[0032] The butterfly screw 6: when it is screwed, the limiting of the connecting column 4 can be controlled, when it is not unscrewed, the movement of the connecting column 4 is limited, and when it is unscrewed, the connecting column 4 can move to stretch the sample;

[0033] The limiting block 7: the limiting block 7 under the connecting column 4 cooperates with the clamping groove 9 on the heat aging test box 1, prevents the connecting column 4 from moving excessively, and guarantees the stability in the testing process;

[0034] The connecting plate 8: is fixed on the side surface of the connecting column 4 and is used for installing the butterfly screw 6, which assists in realizing the control of the movement of the connecting column 4 and facilitates the stretching operation of the sample;

[0035] The clamping groove 9: is movably connected with the limiting block 7, limits the movement range of the connecting column 4, guarantees the movement of the connecting column 4 in the specified area, and guarantees the test accuracy;

[0036] Limiting groove 10: with butterfly screw 6 activity sleeve, through the butterfly screw 6 to limit the position of connecting column 4, determine whether the connecting column 4 can move to carry out the tensile test;

[0037] Round groove 11: located on the chassis 2, used for clamping servo motor 5, make servo motor 5 installation stable, ensure that it can drive the chassis 2 rotation stably.

[0038] Working principle:

[0039] In use, the sample is wound on the connecting column 4, and the high temperature aging test is carried out by starting the heat aging test box 1. The bearing disc 3 is taken out, the sample is wound on the two connecting columns 4 for fixation, the enameled wire is tightly wound on the clamp, the state of the enameled wire in the actual coil can be simulated, the test result is more representative, the butterfly screw 6 is turned upward to make it disengage from the clamping of the limiting groove 10 on the chassis 2, the limiting is opened, at this time the connecting column 4 can move, the connecting column 4 moves to apply different degrees of tensile force to the sample, so as to detect the tensile strength change of the enameled wire under the heat aging environment. The bearing disc 3, the connecting column 4 and the butterfly screw 6 are made of high temperature resistant material. By measuring the maximum tensile force that the enameled wire can withstand under different aging time and temperature conditions, the degradation of the mechanical properties of the enameled wire can be evaluated, which provides an important basis for judging the service life of the material. In the test process, the servo motor 5 is started, and the output shaft drives the fixed chassis 2 to rotate. When the chassis 2 rotates, the clamped bearing disc 3 rotates together. When the bearing disc 3 rotates, the sample wound on the connecting column 4 also rotates. Through rotation, the sample can be uniformly heated in the heat aging process, avoiding inaccurate test results caused by uneven local heating. At the same time, the dynamic working condition of the sample in actual use is simulated, which more truly reflects the aging condition of the sample under the combined action of heat and mechanical stress.

[0040] Finally, it should be pointed out that: obviously, the above embodiments are only examples for clearly illustrating the utility model, and are not limited to the implementation mode. For ordinary skilled person in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A high-temperature aging test device for enameled copper round wire, comprising a thermal aging test chamber (1), characterized in that, The heat aging test chamber (1) is rotatably connected to a chassis (2), and a bearing plate (3) is movably attached to the upper surface of the chassis (2). Two connecting columns (4) for fixing the sample are movably connected to the upper surface of the bearing plate (3). Among them, the two connecting columns (4) are fixedly connected to the annular side of the connecting plate (8), and the two connecting plates (8) are threaded with the wing screw (6) for limiting. A set of servo motors (5) are fixedly connected to the lower surface of the bearing plate (3).

2. The high-temperature aging test equipment for enameled copper round wire as described in claim 1, characterized in that: A servo motor (5) is fixedly installed on the lower surface of the thermal aging test chamber (1); The output shaft of the servo motor (5) is fixedly connected to the chassis (2).

3. The high-temperature aging test equipment for enameled copper round wire as described in claim 1, characterized in that: Limiting blocks (7) are fixedly connected to the lower surfaces of both connecting columns (4).

4. The high-temperature aging test equipment for enameled copper round wire as described in claim 3, characterized in that: The upper surface of the thermal aging test chamber (1) is provided with a slot (9); The card slot (9) is movably connected to two limiting blocks (7).

5. The high-temperature aging test equipment for enameled copper round wire as described in claim 1, characterized in that: A set of limiting grooves (10) are provided on the upper surface of the bearing plate (3); One set of the limiting grooves (10) is movably connected to two wing screws (6).

6. The high-temperature aging test equipment for enameled copper round wire as described in claim 1, characterized in that: A set of circular grooves (11) are provided on the upper surface of the chassis (2); Among them, a set of circular grooves (11) are respectively connected to a set of servo motors (5).

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