Railway car insulation testing device

Abstract

The utility model provides a railway passenger car insulation testing arrangement, including box, fixed mounting panel in the box and install resistor, circuit breaker and wiring terminal group on mounting panel, the resistor sets up a plurality, contains a potentiometer and a plurality of fixed resistance of different resistance value, the number of circuit breaker and the group number of wiring terminal group all are same with the total number of resistor, each resistor is connected with a circuit breaker and a group of wiring terminal group electric signal respectively, this design is according to different test demand, and integrates a plurality of insulation detection elements, namely integrated potentiometer of variable resistance, still integrated a plurality of resistance of different resistance value, and each resistor is connected circuit breaker and wiring terminal group respectively and forms a set of test loop, detects according to different form railway passenger car line detection, and accesses one group of wiring terminal group to detect, and can use conveniently, is convenient for management, preservation and carrying.

Description

Technical Field

[0001] This utility model relates to the field of insulation testing technology, and in particular to an insulation testing device for railway passenger cars. Background Technology

[0002] After the railway passenger car is assembled, the electrical system needs to be debugged. During the debugging, the functions of various types of insulation monitoring devices need to be tested, including insulation monitoring devices with different voltage levels such as DC48V, DC110V, AC380V, and DC600V. When testing insulation monitoring devices with different voltage levels, it is necessary to connect various components of different specifications and types, including circuit breakers and resistors (potentiometers). Temporary connections are made during the test, and there are many components, which leads to inconvenience in operation and easy damage to components. Utility Model Content

[0003] The purpose of this invention is to provide an insulation testing device for railway passenger cars to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An insulation testing device for railway passenger cars includes a housing, a mounting plate fixed inside the housing, and resistors, circuit breakers, and terminal blocks mounted on the mounting plate. Multiple resistors are provided, including a potentiometer and several fixed resistors with different resistance values. The number of circuit breakers and the number of terminal blocks are the same as the total number of resistors. Each resistor is electrically connected to a circuit breaker and a set of terminal blocks.

[0006] Further description of the present invention: the box body includes a lower box body and an upper box cover; the rear end of the lower box body is hinged to the upper box cover via a hinge, and the front end is connected to the upper box cover via a latch; the upper box cover is provided with a handle.

[0007] As further described in this utility model, the housing is made of aluminum alloy.

[0008] In a further description of this utility model, the mounting plate is made of bakelite.

[0009] Further description of this utility model: four fixed resistors are provided, namely a first resistor, a second resistor, a third resistor, and a fourth resistor; the first resistor has a rated power of 5W and a resistance of 800Ω; the second resistor has a rated power of 10W and a resistance of 200Ω; the third resistor has a rated power of 10W and a resistance of 2KΩ; the fourth resistor has a rated power of 10W and a resistance of 14KΩ; and the potentiometer has a rated power of 5W and a resistance of 5KΩ.

[0010] Further description of this utility model: the circuit breaker is mounted on the middle position above the mounting plate, distributed left and right; the potentiometer is mounted on the front left side above the mounting plate; the terminal block is integrated on the cage spring terminal block; four cage spring terminal blocks are arranged and mounted on the mounting plate at the four corners; all the fixed resistors are fixed on the bottom of the mounting plate; the mounting plate is provided with wire through holes at the positions of the potentiometer, each cage spring terminal block and each circuit breaker.

[0011] The beneficial effects of this utility model are as follows:

[0012] This design integrates multiple insulation testing elements to meet different testing needs. It integrates a potentiometer with variable resistance and multiple resistors with different resistance values. Each resistor is connected to a circuit breaker and a terminal block to form a test circuit. During testing, depending on the type of railway passenger line, the circuit can be connected to one of the terminal blocks for testing. It is convenient to use, manage, store and carry. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] like Figure 1 As shown, a railway passenger car insulation testing device includes a housing 1, a mounting plate 2 fixed inside the housing 1, and resistors 3, circuit breakers 4, and terminal blocks mounted on the mounting plate 2. Multiple resistors 3 are provided, including a potentiometer 31 and several fixed resistors (not shown) with different resistance values. The number of circuit breakers 4 and the number of terminal blocks are the same as the total number of resistors 3. Each resistor 3 is electrically connected to a circuit breaker 4 and a terminal block. This design integrates a variable resistance potentiometer 31 and multiple fixed resistance resistors, which are connected to the circuit breaker 4 and the terminal blocks to form multiple test circuits. The circuit breaker 4 is used to control the closing and opening of the circuit, and the terminal blocks are used to connect to the external lines to be tested. Insulation testing can be performed by selecting the appropriate test circuit according to different voltage levels of insulation testing.

[0016] The box body 1 includes a lower box body 11 and an upper box cover 12; the rear end of the lower box body 11 is hinged to the upper box cover 12 via a hinge, and the front end is connected to the upper box cover 12 via a latch; the upper box cover 12 is provided with a handle 121, which can be closed on the lower box body 11 and locked by the latch when not in use to improve the protection function, and can be picked up and moved by the handle 121 when it needs to be moved, making it convenient for manual handling.

[0017] The housing 1 is made of aluminum alloy.

[0018] The mounting plate 2 is made of bakelite, which has sufficient strength and excellent electrical insulation properties, ensuring safe use.

[0019] Four fixed resistors are provided, namely, a first resistor, a second resistor, a third resistor, and a fourth resistor. The first resistor has a rated power of 5W and a resistance of 800Ω; the second resistor has a rated power of 10W and a resistance of 200Ω; the third resistor has a rated power of 10W and a resistance of 2KΩ; and the fourth resistor has a rated power of 10W and a resistance of 14KΩ. The potentiometer 31 has a rated power of 5W and a resistance of 5KΩ. In this design, test circuits for DC48V, DC110V, AC380V, and DC600V are respectively set up, which can be used for insulation testing of different types of railway passenger car lines. Taking the test of the train-level insulation monitoring device of the first and last cars of a DC600V passenger car as an example, during the line insulation test, the latches and cover of the box 1 are opened, the circuit breaker 4 is confirmed to be in the open position, and the 5 Adjust the resistance of the kΩ test potentiometer 31 to its maximum value, and connect it to the vehicle's main line +110V and ground wire through the terminal block. After the connection is completed, close the circuit breaker 4 and slowly reduce the resistance of the potentiometer 31. When the DC110V positive terminal voltage to ground and the DC110V bus voltage are less than 16.7%±3%, the vehicle display screen will show "insulation degradation", indicating that the test function is normal. After the test is completed, first disconnect the circuit breaker 4, and then disconnect it from the vehicle's wiring.

[0020] The circuit breakers 4 are mounted on the left and right sides at the center of the mounting plate 2; the potentiometers 31 are mounted on the front left side of the mounting plate 2; the terminal blocks are integrated on the cage spring terminal blocks 5; four cage spring terminal blocks 5 are arranged at the four corners of the mounting plate 2; all the fixed resistors are fixed to the bottom of the mounting plate 2; the mounting plate 2 has wire through holes at the positions corresponding to the potentiometers 31, each cage spring terminal block 5, and each circuit breaker 4. This design eliminates the need for manual operation of the potentiometers 31, circuit breakers 4, and terminal blocks. The components are mounted on the mounting plate 2 for manual operation. The distribution of each component is clear, making it easy for operators to work. The fixed resistor is installed at the bottom of the mounting plate 2, which provides protection and reduces the number of components on the mounting plate 2. This avoids the problem of too many components being integrated on the mounting plate 2, which would cause it to be too cluttered. The wire through holes on the mounting plate 2 allow the wires of the components on the mounting plate 2 to pass through the wire through holes and be wired from the bottom of the mounting plate 2, avoiding the need for wiring on the mounting plate 2. This also provides further protection, avoids clutter, and makes it easy to use.

[0021] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. An insulation testing device for railway passenger cars, characterized in that: It includes a housing, a mounting plate fixed inside the housing, and resistors, circuit breakers, and terminal blocks mounted on the mounting plate; multiple resistors are provided, including a potentiometer and several fixed resistors with different resistance values; the number of circuit breakers and the number of terminal blocks are the same as the total number of resistors; each resistor is electrically connected to a circuit breaker and a set of terminal blocks.

2. The railway passenger car insulation testing device according to claim 1, characterized in that: The box body includes a lower box body and an upper box cover; the rear end of the lower box body is hinged to the upper box cover via a hinge, and the front end is connected to the upper box cover via a latch; the upper box cover is provided with a handle.

3. The railway passenger car insulation testing device according to claim 1, characterized in that: The enclosure is made of aluminum alloy.

4. The railway passenger car insulation testing device according to claim 1, characterized in that: The mounting plate is made of bakelite.

5. The railway passenger car insulation testing device according to claim 1, characterized in that: Four fixed resistors are provided, namely a first resistor, a second resistor, a third resistor, and a fourth resistor; the first resistor has a rated power of 5W and a resistance of 800Ω; the second resistor has a rated power of 10W and a resistance of 200Ω; the third resistor has a rated power of 10W and a resistance of 2KΩ; the fourth resistor has a rated power of 10W and a resistance of 14KΩ; and the potentiometer has a rated power of 5W and a resistance of 5KΩ.

6. The railway passenger car insulation testing device according to claim 1, characterized in that: The circuit breakers are mounted on the left and right sides at the center of the mounting plate; the potentiometers are mounted on the front left side of the mounting plate; the terminal blocks are integrated on the cage spring terminal blocks; four cage spring terminal blocks are mounted on the mounting plate at the four corners; all the fixed resistors are fixed to the bottom of the mounting plate; the mounting plate has wire through holes at the positions of the potentiometers, each cage spring terminal block, and each circuit breaker.

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