Adjustable load vehicle

Abstract

The utility model relates to an adjustable load vehicle which comprises a main cabinet body, the main cabinet body is in a cuboid shape and serves as a containing and supporting main body of the adjustable load vehicle, and the main cabinet body comprises a bottom face, a vertically-arranged back face, two opposite side faces and a cabinet door opposite to the back face; the resistance rod module comprises a plurality of resistance rods, and the resistance rods are fixed on the two side surfaces of the main cabinet body through supports and are installed in the main cabinet body; the air switches comprise a plurality of air switches, each air switch is connected with one of the resistance rods in series, the resistance rods are connected in parallel, and each air switch controls the resistance rods to be in a parallel connection or disconnection state so as to adjust the resistance value of a load vehicle access circuit; the cabinet door is provided with a hollow part, and the hollow part is used for exposing an air switch. According to the adjustable load vehicle provided by the utility model, resistance parameters can be accurately adjusted and various load conditions can be simulated by directly controlling the air switch and selecting the switch under the condition that the cabinet door is not opened; dynamic load change is supported, and fluctuation in actual working conditions is simulated.

Description

TECHNICAL FIELD

[0001] The utility model relates to power test equipment technical field, specifically, relate to a load car of load dynamic regulation. BACKGROUND

[0002] In industrial power debugging, load simulation is a key step. Through the simulation of power load with a dummy load, the performance of the power supply is detected to observe whether the power supply can work stably or its performance will be affected.

[0003] The traditional method usually uses an electronic load or a resistor as a dummy load. Among them, the resistor is used as a dummy load, and a large amount of time is required to select the resistor and connect the lines between the resistors. It is difficult to flexibly adjust the load parameters, and it is not convenient to move, which affects the debugging efficiency. The load value cannot be adjusted with high precision by ordinary load cars. The load adjustment method is single, and precision adjustment cannot be realized. The expansion interface is insufficient, and external devices cannot be connected to realize the protection function triggering of the measured power supply equipment. The electronic load is expensive.

[0004] Therefore, it is urgent to develop a technical scheme with relatively low cost compared with the electronic load, and the load can be conveniently adjusted. SUMMARY

[0005] The utility model solves the problems of expensive electronic load, time-consuming resistor series connection, and ordinary load car unable to adjust load value with high precision.

[0006] To solve the above technical problems, the utility model provides an adjustable load car, which comprises: a main cabinet, which is a cuboid shape and serves as the accommodation and support body of the adjustable load car, and comprises a bottom surface, a vertically arranged back surface, two opposite side surfaces, and a cabinet door opposite to the back surface; a resistor rod module comprising a plurality of resistor rods, the resistor rods being fixed to the two side surfaces of the main cabinet and installed in the main cabinet through supports; an air switch comprising a plurality of air switches, each air switch being connected in series with one of the resistor rods, and the resistor rods being connected in parallel, and the resistor rods being controlled by the air switches to be in parallel or disconnected to adjust the resistance value of the load car connected to the circuit; an input socket and an expansion adapter socket, wherein the back surface of the cabinet door is provided with a guide rail, the line splitter is fixed on the guide rail through buckles, the line splitter realizes one-to-multiple distribution of the phase line, the line after distribution is arranged along the edge of the cabinet and connected to the air switch, the line after the air switch is connected to the port of the resistor rod, and the other end of the resistor rod is connected to the N phase of the input socket and the N phase of the expansion adapter socket, wherein the cabinet door is provided with a hollow part for exposing the air switch.

[0007] According to the embodiment of the utility model, the adjustable load car can further comprise: an ammeter arranged at the upper part of the cabinet door, connected in series in the load car general circuit, used for detecting the current value of the load car connected circuit;A voltmeter arranged at the upper part of the cabinet door, connected in parallel in the load car general circuit, used for detecting the voltage value of the load car connected circuit.

[0008] According to the embodiment of the utility model, the ammeter can be a three-phase ammeter, and the voltmeter can be a three-phase voltmeter.

[0009] According to the embodiment of the utility model, the extension adapter socket can be two, used for expanding one or more sliding rheostats to adjust the resistance value to realize the protection function of triggering the detected equipment.

[0010] According to the embodiment of the utility model, the input socket and the extension adapter socket can be four-phase three-wire 86 type sockets.

[0011] According to the embodiment of the utility model, the resistance rod module resistance value can be arranged and selected by using the equal ratio series summation method according to the commonly used power.

[0012] According to the embodiment of the utility model, the back surface and the opposite two side surfaces of the main cabinet body can be provided with through holes, which are heat dissipation surfaces.

[0013] According to the embodiment of the utility model, the back surface and the opposite two side surfaces of the main cabinet body can be provided with grid-shaped heat dissipation holes, wherein the aperture ratio of the back surface and the opposite two side surfaces of the main cabinet body can be ≥40%.

[0014] According to the embodiment of the utility model, the bottom surface of the main cabinet body can be provided with wheels for moving the vehicle body, and the wheels can include two directional moving wheels and two universal wheels.

[0015] According to the embodiment of the utility model, a fan can be arranged on the bottom surface of the main cabinet body, and the fan blows vertically from the bottom to the resistance rod module. Wherein, the power supply of the fan can be separate power supply to ensure the heat dissipation of the load car after stopping running, and also does not affect the accuracy of the measured power supply.

[0016] Further, the fan is preferably four, and the specific number is not limited, which is determined according to the user's needs.

[0017] According to the embodiment of the utility model, the adjustable load car can further comprise a door lock arranged on the cabinet door.

[0018] Compared with the prior art, the technical scheme provided by the embodiment of the utility model can at least realize the following beneficial effects:

[0019] The adjustable load vehicle has load adjustability, can simulate various load conditions by directly controlling the air switch without opening the cabinet door, and can accurately adjust the resistance parameter through the mode of selecting the switch.

[0020] The adjustable load vehicle has high integration, is provided with a detection module, can monitor voltage, current and parameters in real time, and is marked on a display screen.

[0021] The adjustable load vehicle has compatibility, supports various power supply interfaces through the socket connector, and is suitable for different power supply systems.

[0022] The adjustable load vehicle has portability, is provided with wheels, is convenient to move in different debugging sites, has compact structure, and is suitable for sites with limited space.

[0023] The adjustable load vehicle is provided with heat dissipation holes and a fan, increases ventilation and gas flow, enhances heat dissipation, and can timely dissipate heat of the load vehicle.

[0024] The adjustable load vehicle is cheap compared with an electronic load product, has higher integration compared with a resistance combination, is more flexible, can easily change the load size that can be carried through an expansion interface, adapts to different load requirements, and triggers the protection function of the measured power supply. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description only relate to some embodiments of the present application, but not limit the present application.

[0026] Figure 1 Fig. 1 is a schematic diagram showing the overall structure of the adjustable load vehicle according to the embodiments of the present application;

[0027] Figure 2 Fig. 2 is a circuit diagram showing the load adjustment module of the load vehicle according to the embodiments of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0029] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the description and claims of the present patent application do not denote any order, quantity, or importance, but are used to distinguish different components. Similarly, the terms "one" or "a" or similar terms do not denote a quantity limitation, but indicate the presence of at least one.

[0030] Figure 1 is a schematic diagram showing the overall structure of the adjustable load cart according to an embodiment of the present application.

[0031] As shown in Figure 1 , the adjustable load cart comprises a main cabinet 1, a resistance rod module 3, a plurality of air switches 4, an input socket 5, and an expansion adapter socket.

[0032] The main cabinet 1 is in the shape of a rectangular parallelepiped, and serves as a containing and supporting body of the adjustable load cart. The main cabinet 1 comprises a bottom surface, a vertically arranged back surface, two opposite side surfaces, and a cabinet door 2 opposite to the back surface.

[0033] The resistance rod module 3 comprises a plurality of resistance rods, which are fixed to the two side surfaces of the main cabinet 1 by brackets and installed in the main cabinet 1.

[0034] The air switches 4 are in plurality, each of which is connected in series with one of the resistance rods, and the resistance rods are connected in parallel with each other. The resistance rods are controlled by the air switches 4 to be in a parallel or disconnected state, so as to adjust the resistance value of the circuit to which the load cart is connected.

[0035] Among them, the cabinet door 2 is provided with a guide rail, and the line splitter is fixed on the guide rail by buckles to realize one-to-multiple distribution of the phase line. After distribution, the line is arranged along the edge of the cabinet and connected to the air switch 4. The line is connected to the N-phase of the input socket 5 and the N-phase line position of the expansion adapter socket through the other end of the resistance rod after passing through the air switch 4.

[0036] Among them, the cabinet door 2 is provided with a hollow part for exposing the air switch 4.

[0037] The adjustable load car has load adjustability, can accurately adjust resistance parameters, simulates various load conditions, supports dynamic load change and simulates fluctuation in actual working conditions.

[0038] According to one or some embodiments of the utility model, the adjustable load car further comprises: an ammeter 6 and a voltmeter 7.

[0039] The ammeter 6 is arranged at the upper portion of the cabinet door 2, is connected in series in the load car general circuit and is used for detecting the current value of the load car connected to the circuit; the voltmeter 7 is arranged at the upper portion of the cabinet door 2, is connected in parallel in the load car general circuit and is used for detecting the voltage value of the load car connected to the circuit.

[0040] Further, the ammeter 6 is a three-phase ammeter 6, and the voltmeter 7 is a three-phase voltmeter 7.

[0041] According to the adjustable load car of the utility model, the integration degree is high, the detection module is installed, voltage, current and parameters are monitored in real time, and are marked on the display screen.

[0042] Figure 2 It is a circuit diagram showing the load adjustment module of the load car according to the embodiment of the utility model.

[0043] As shown in Figure 2 The expansion adapter socket is two, which is used for expanding one or more sliding rheostats to adjust resistance value and realize the protection function of triggering the detected equipment.

[0044] According to one or some embodiments of the utility model, the input socket 5 and the expansion adapter socket are four-phase three-wire 86 type sockets.

[0045] According to the adjustable load car of the utility model, the compatibility is provided, a variety of power supply interfaces are supported through the socket connector, and the adjustable load car is suitable for different power supply systems.

[0046] According to one or some embodiments of the utility model, the resistance rod module 3 resistance value is selected according to the commonly used power and is arranged and selected by using the equal ratio series summation method.

[0047] According to one or some embodiments of the utility model, the wheels for moving the car body are arranged at the bottom surface of the main cabinet body 1, and the wheels include two directional moving wheels and two universal wheels.

[0048] According to the adjustable load car of the utility model, the portability is provided, the load car is equipped with wheels, is convenient to move in different debugging sites, the structure is compact, and is suitable for places with limited space.

[0049] According to one or some embodiments of the utility model, the back surface and the opposite two side surfaces of the main cabinet body 1 are provided with through holes, which are heat dissipation surfaces.

[0050] Further, the back surface and the opposite two side surfaces of the main cabinet 1 are provided with grid-shaped heat dissipation holes, wherein the opening rate of the back surface and the opposite two side surfaces of the main cabinet 1 is greater than or equal to 40%.

[0051] According to one or some embodiments of the present application, the fan 8 is vertically arranged on the bottom surface of the main cabinet 1 and blows air upward from the bottom to the resistance rod module 3.

[0052] Further, the fan 8 is preferably four, and the specific number is not limited, which is determined according to the user's needs.

[0053] According to the adjustable load vehicle of the present application, the heat dissipation holes and the fan are arranged to increase ventilation and gas flow, enhance heat dissipation, and enable the load vehicle to dissipate heat in time.

[0054] According to one or some embodiments of the present application, the adjustable load vehicle further comprises a door lock 9 arranged on the cabinet door 2.

[0055] According to the adjustable load vehicle of the present application, the cost is low compared with the electronic load product; compared with the resistance combination, the integration is higher, the flexibility is better, and the load size that can be carried can be easily changed through the expansion interface to adapt to different load requirements and trigger the protection function of the measured power supply.

[0056] The above description is only a demonstrative embodiment of the present application, and is not used to limit the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. An adjustable load cart, comprising: The utility model relates to a kind of load test device, including: Main cabinet, the main cabinet is cuboid shape, is the accommodation and support body of adjustable load vehicle, the main cabinet includes bottom surface, vertically arranged back, opposite two side surfaces, and cabinet door opposite to back; Resistance bar module, including multiple resistance bars, the resistance bar is fixed to the two side surfaces of main cabinet by support, is installed in main cabinet; Air switch, including multiple air switches, each air switch is connected in series with one of resistance bar, resistance bar is connected in parallel between, resistance bar is controlled by each air switch to be parallel or disconnected state, to adjust the resistance value of load vehicle access circuit; Input socket and expansion adapter socket, Wherein, the back of cabinet door is provided with guide rail, and the line splitter is fixed on the guide rail by buckle, to realize the one-to-many of phase line, after line splitting, line is arranged along the edge of cabinet and is connected to air switch, line is connected to the N phase of input socket and the N phase line of expansion adapter socket after passing through air switch, through the other end of resistance bar, Wherein, hollow is provided on the cabinet door, for exposing air switch.

2. The adjustable load cart of claim 1, wherein, Further including: Ammeter, set in the upper portion of the cabinet door, connected in series in the load vehicle total circuit, for detecting the current value of load vehicle access circuit; Voltage meter, set in the upper portion of the cabinet door, connected in parallel in the load vehicle total circuit, for detecting the voltage value of load vehicle access circuit.

3. The adjustable load cart of claim 2, wherein, The ammeter is three-phase ammeter, and the voltage meter is three-phase voltage meter.

4. The adjustable load cart of claim 1, wherein, The expansion adapter socket is two, for expanding one or more sliding rheostat to adjust resistance value to realize the protection function of triggering detected equipment.

5. The adjustable load cart of claim 1, wherein, The input socket and expansion adapter socket are four-phase three-wire 86 type socket.

6. The adjustable load cart of claim 1, wherein, The resistance value of resistance bar module is selected according to commonly used power, and is arranged and selected by using geometric progression summation method.

7. The adjustable load cart of claim 1, wherein, The back, opposite two side surfaces of the main cabinet are provided with through holes, which are heat dissipation surfaces.

8. The adjustable load cart of claim 7, wherein, The back, opposite two side surfaces of the main cabinet are provided with grid-shaped heat dissipation holes, Wherein, the back, opposite two side surfaces of the main cabinet have a hole rate of ≥40%.

9. The adjustable load cart of claim 1, wherein, Wheels for moving vehicle body are arranged below the bottom surface of the main cabinet, and the wheels include two directional moving wheels and two universal wheels.

10. The adjustable load cart of claim 1, wherein, A fan is arranged through the bottom surface of the main cabinet, and the fan blows vertically from bottom to up to resistance bar module, Wherein, the fan is powered separately to ensure heat dissipation after load vehicle stops running, and does not affect the accuracy of measured power supply.

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