Practical training device for maintenance electrician

Abstract

The utility model discloses a maintenance electrician practical training device which is composed of an operation table 1, a power box 2 and a practical operation screen 3, an operation power supply adopts double safety measures of arranging a leakage protection switch and a safety isolation transformer, and the practical training device is attractive in appearance, reasonable in structure, provided with various common electric appliances and matched working power supplies, rich in practical training content, and close to an industrial site in method. The device can be widely applied to teaching programs such as electric dragging, factory electrical control technology, relay contact control and the like, and industrial enterprise employee training.

Description

Technical Field

[0001] The utility model belongs to the field of skill training and relates to a maintenance electrician training device. Background Art

[0002] Electrical engineering technology is extensive and complex, and is a highly practical discipline. Practical training is an important means of combining theoretical knowledge with practice. Through corresponding practical training projects, we can understand the important processes in actual production design and transform them from theory to practice. Due to the risks of electric shock in actual electrician operations, current training and assessment of electrician work are mainly based on theory and computer tests, resulting in situations where electrician work assessments are passed but cannot actually be performed, and special operations personnel often dare not operate even though they hold electrician certificates. Existing training and assessments have great limitations, and the training efficiency is very low.

[0003] It will be very meaningful to provide a training and assessment device with a complete safe operating environment and circuit wiring and circuit functions that are exactly the same as those of electrical work subjects, so that electricians can be trained and assessed under conditions of safety protection and improve the actual electrical operation capabilities of low-voltage electricians. Summary of the invention

[0004] The utility model aims to provide a maintenance electrician training device, aiming to solve the problem of realizing training and assessment in a safe environment.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a maintenance electrician training device, comprising: an operating table, a power box and a practical operation screen, wherein a power box is installed above the operating table, and a practical operation screen is installed above the power box; it is characterized in that: the power box is composed of a main power supply unit, an electrical measurement unit, a DC power supply unit, a single-phase AC adjustable power supply unit and a three-phase power supply unit, the main power supply unit adopts a leakage protection switch to connect the main power supply, the output end of the leakage protection switch is connected to the main power contactor through an isolation transformer, and the output end of the main power contactor is respectively connected to the power input end of the DC power supply unit, the single-phase AC adjustable power supply unit and the three-phase power supply unit; the control switches, meters, signal indicators of the main power supply unit, the electrical measurement unit, the DC power supply unit, the single-phase AC adjustable power supply unit, and the three-phase power supply unit, as well as the output sockets of the DC power supply unit, the single-phase AC adjustable power supply unit, and the three-phase power supply unit and the signal input socket of the electrical measurement unit are all arranged on the front control panel of the power box.

[0006] The operating table is composed of an operating table top and a tool cabinet below the operating table top. Universal wheels are arranged at four corners of the bottom of the operating table, and all the four universal wheels have a positioning function.

[0007] The practical operation screen is composed of a mesh plate installed on a frame, with a lintel plate arranged above it. The mesh of the mesh plate is a rectangular rounded structure with a length of 0.15 basic module value and a width of 0.05 basic module value, and is arranged in pairs in a criss-cross manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0009] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0010] Figure 2 It is a schematic diagram of the side structure of the utility model;

[0011] Figure 3 It is a partial enlarged schematic diagram of the mesh plate of the utility model;

[0012] Figure 4 This is a circuit diagram of the measurement and control box of the utility model;

[0013] Among them: 1-operating table, 2-power box, 3-practical screen, 4-mesh plate, 5-main power supply unit, 6-electrical measurement unit, 7-DC power supply unit, 8-single-phase AC adjustable power supply unit, 9-three-phase power supply unit, 10-operating table top, 11-lintel board, 12-tool kitchen, 13-universal wheel, 14-isolation transformer, 51-leakage protection switch, 52-main power contactor. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0018] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0019] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0020] The accompanying drawings show various structural schematic diagrams of the embodiments disclosed in the utility model. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0021] Referring to the accompanying drawings, the present application is a maintenance electrician training device, comprising: an operating table 1, a power box 2 and a practical operation screen 3, wherein the power box 2 is installed above the operating table 1, and the practical operation screen 3 is installed above the power box 2; it is characterized in that: the power box 2 is composed of a total power supply unit 5, an electrical measurement unit 6, a DC power supply unit 7, a single-phase AC adjustable power supply unit 8 and a three-phase power supply unit 9, the total power supply unit 5 adopts a leakage protection switch 51 to connect to the mains, the output end of the leakage protection switch 51 is connected to the total power contactor 52 through an isolation transformer 14, and the output end of the total power contactor 52 is respectively connected to the power input end of the DC power supply unit 7, the single-phase AC adjustable power supply unit 8 and the three-phase power supply unit 9; the control switch, meter, signal indication and DC power supply unit 7, single-phase AC adjustable power supply unit 8, three-phase power supply unit 9 of the total power supply unit 5, electrical measurement unit 6, DC power supply unit 7, single-phase AC adjustable power supply unit 8, three-phase power supply unit 9 output sockets and the signal input socket of the electrical measurement unit 6 are all arranged on the front control panel of the power box 2;

[0022] The non-charged metal parts of the operating table 1, power box 2 and practical operation screen 3 are all reliably grounded, and the neutral point of the isolation transformer 14 is not grounded. If a trainee accidentally touches a charged object, the current passing through the human body is only the capacitive current of the secondary side system of the isolation transformer, which is very small and will not cause harm to the person; it is equivalent to double insulation or reinforced insulation, which electrically separates the input winding from the output winding.

[0023] The operating table 1 is composed of an operating table top 10 and a tool cabinet 12 below the operating table top 10 . Universal wheels 13 are arranged at the four corners of the bottom of the operating table 1 , and the four universal wheels 13 have a positioning function.

[0024] The practical screen 3 is composed of a mesh plate 4 mounted on a frame, and a lintel 11 is arranged above it. The mesh of the mesh plate 4 is a rectangular rounded structure, with a length of 0.15 basic module value, a width of 0.05 basic module value, and is arranged in pairs in a criss-cross manner; various electrical components, guide rails, wire troughs, etc. can be installed on the modular mesh plate 4 by expansion plugs; the lintel 11 adopts an LED signal screen to display the assessment content and the student status.

[0025] The utility model operating power supply adopts dual safety measures of setting leakage protection switch and safety isolation transformer. It has beautiful appearance and reasonable structure, is equipped with a variety of common electrical appliances and matching working power supplies, has rich training content, and the method is close to the industrial site. It can be widely used in teaching syllabuses such as "electric traction", "factory electrical control technology", and "relay contact control", as well as industrial enterprise employee training. The training method is flexible in that training items can be increased by adding components, and it has strong scalability.

Claims

1. A maintenance electrician training device, comprising: The invention is composed of an operating table (1), a power supply box (2) and a practical operation screen (3), wherein the power supply box (2) is installed above the operating table (1), and the practical operation screen (3) is installed above the power supply box (2); the invention is characterized in that: the power supply box (2) is composed of a main power supply unit (5), an electrical measurement unit (6), a DC power supply unit (7), a single-phase AC adjustable power supply unit (8) and a three-phase power supply unit (9), the main power supply unit (5) adopts a leakage protection switch (51) to connect to the main power supply, the output end of the leakage protection switch (51) is connected to the main power contactor (52) through an isolation transformer (14), and the main power supply is connected to the main power supply contactor (52) through an isolation transformer (14). The output end of the source contactor (52) is respectively connected to the power input ends of the DC power supply unit (7), the single-phase AC adjustable power supply unit (8) and the three-phase power supply unit (9); the control switches, meters, signal indicators of the total power supply unit (5), the electrical measurement unit (6), the DC power supply unit (7), the single-phase AC adjustable power supply unit (8) and the three-phase power supply unit (9) and the output sockets of the DC power supply unit (7), the single-phase AC adjustable power supply unit (8) and the three-phase power supply unit (9) and the signal input socket of the electrical measurement unit (6) are all arranged on the front control panel of the power supply box (2).

2. A maintenance electrician training device according to claim 1, characterized in that: The operating table (1) is composed of an operating table top (10) and a tool cabinet (12) below the operating table top (10), and universal wheels (13) are arranged at the four corners of the bottom thereof, and the four universal wheels (13) all have a positioning function.

3. A maintenance electrician training device according to claim 1, characterized in that: The practical operation screen (3) is composed of a mesh plate (4) mounted on a frame, and a lintel plate (11) is arranged above the mesh plate. The mesh holes of the mesh plate (4) are rectangular with rounded corners and are arranged in pairs in a crisscross pattern.

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