Vehicle brake resistor temperature control detection device

Abstract

The utility model relates to the technical field of vehicle brake resistor temperature detection, and discloses a vehicle brake resistor temperature control detection device, which comprises an oscilloscope and a temperature controller, one side of the oscilloscope is connected with a terminal strip, one side of the terminal strip is provided with a direct current 24V stabilized power supply, the direct current 24V stabilized power supply is electrically connected with the terminal strip, and the temperature controller is electrically connected with the oscilloscope. One side of the oscilloscope is also provided with a direct current adjustable power supply A and a direct current power supply B, one side of the terminal strip is provided with an adjustable heating device and a resistor, and the oscilloscope is used for monitoring the power supply voltage of the temperature signal acquisition end of the temperature controller, the temperature analog signal voltage of the resistor strip, the alarm signal voltage of the temperature control device and the ventilation over-temperature alarm signal voltage; when the ventilation temperature exceeds 70 DEG C, the thermal protection switch is turned on, and the ventilation over-temperature alarm signal is changed from the high-level direct current to the low-level direct current, so that the temperature control device can be quickly detected independently.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle brake resistor temperature detection, in particular to a vehicle brake resistor temperature control detection device. Background Art

[0002] The train brake resistor temperature control device monitors the temperature of the resistor bank in real time during the electric brake application process and provides over-temperature protection to prevent the brake resistor from overloading. The temperature control device is one of the most important control components of the brake resistor. In order to ensure the quality of brake resistor maintenance, the temperature control device needs to be inspected. Its main function is to ensure that the brake system operates within a safe temperature range to improve the safety and performance of the vehicle.

[0003] At present, the temperature control device is tested by being installed on the train, and the function of the temperature control device is confirmed to be normal based on the results of the static test and dynamic test of the train. This method has great limitations. Once the brake resistor has an over-temperature fault alarm during the static and dynamic tests, it is difficult to quickly locate the fault point and it is impossible to quickly determine whether the fault is caused by the failure of the temperature control device. The current common practice is to use the interchange method to check, that is, to swap the two sets of temperature control devices to observe whether the fault is transferred. This method is inefficient and cannot reliably guarantee the timeliness of fault handling and production quality, affecting production progress.

[0004] Therefore, we propose a vehicle brake resistor temperature control and detection device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a vehicle brake resistor temperature control and detection device to solve the problem that the above-mentioned background technology proposes to swap two sets of temperature control devices to observe whether the fault is transferred. This method is inefficient and cannot reliably guarantee the timeliness of fault handling and production quality, thus affecting production progress.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vehicle brake resistor temperature control detection device, comprising an oscilloscope and a thermostat for monitoring temperature, a terminal block connected to one side of the oscilloscope, the terminal block being used to connect the circuit, a DC 24V regulated power supply provided on one side of the terminal block, the DC 24V regulated power supply being electrically connected to the terminal block, a DC adjustable power supply A and a DC power supply B provided on one side of the oscilloscope, the positive and negative poles of the DC adjustable power supply A being electrically connected to the first and second points of the temperature signal acquisition end of the thermostat, continuously providing a 30V DC voltage to the temperature signal acquisition end of the thermostat, the positive and negative poles of the DC power supply B being electrically connected to the third and fourth points of the temperature signal acquisition end of the thermostat, providing the thermostat with an over-temperature analog signal of the resistor block, an adjustable heating device and a resistor being provided on one side of the terminal block, and the resistor being connected to the terminal block.

[0007] Preferably, the terminal block contains a ventilation over-temperature alarm signal and a thermostat alarm signal.

[0008] Preferably, the oscilloscope adopts no less than four channels, which respectively monitor the power supply voltage of the temperature signal acquisition end of the temperature controller, the resistance row temperature analog signal voltage, the temperature control device alarm signal voltage and the ventilation overtemperature alarm signal voltage, and record the changes in each signal voltage in real time. The adjustable heating device can heat the thermal protection switch to 70°C, and the action of the thermal protection switch is confirmed by the ventilation overtemperature alarm signal monitored by the oscilloscope 1.

[0009] Preferably, the positive and negative poles of the DC 24V regulated power supply are respectively connected to points 4 and 2 of the terminal block, providing a stable DC regulated power supply for the temperature controller fault logic control circuit and the thermal protection switch circuit. When the resistor row overheats, that is, the resistor row temperature analog signal voltage exceeds 0.9 volts, the thermostat alarm signal will change from high level DC to low level. When the ventilation temperature exceeds 70°C, the thermal protection switch is opened, and the ventilation overtemperature alarm signal will change from high level DC to low level.

[0010] Preferably, the surface of the oscilloscope is provided with a display screen and an interface, the interface is used for inserting a cable connector and can be electrically connected to the terminal block, and the front end of the oscilloscope is also provided with a fixing structure for fixing the cable.

[0011] Preferably, the fixing structure includes a base plate arranged at the front end of the oscilloscope and a hinged seat arranged at the upper end of the base plate, the inner side of the hinged seat is rotatably connected to a flip cover, the bottom of the flip cover is provided with a stop block, the front and rear sides of the stop block are provided with mounting blocks, the surface of the mounting block is provided with bolts for fixing, and limit blocks are provided on the base plate and the flip cover, and an elastic pad for wear resistance is provided on the inner wall of the limit block. After the cable connector is inserted into the interface, the flip cover is flipped so that the limit blocks are close to each other, and the cable can be clamped by using the elastic pad that can generate deformation.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Through the oscilloscope, thermostat, terminal block, DC 24V regulated power supply, DC adjustable power supply A, DC power supply B, adjustable heating device and resistor, use the oscilloscope to monitor the power supply voltage of the temperature signal acquisition end of the thermostat, the temperature analog signal voltage of the resistor bank, the alarm signal voltage of the temperature control device and the ventilation over-temperature alarm signal voltage. When the resistor bank overheats, that is, the voltage of the resistor bank temperature analog signal exceeds 0.9 volts, the alarm signal of the thermostat will change from high-level DC to low-level. When the ventilation temperature exceeds 70°C, the thermal protection switch is turned on, and the ventilation over-temperature alarm signal will change from high-level DC to low-level. The temperature control device can be quickly detected separately.

[0014] 2. The oscilloscope, interface and fixed structure can restrict the cable connector plugged into the interface, so that the cable remains stable, avoiding accidental falling off and causing signal interruption, which is beneficial to the normal use of the oscilloscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure circuit of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the oscilloscope of the present utility model;

[0017] Figure 3 This is a schematic diagram of the fixed structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the flip cover structure of the present invention when viewed from above.

[0019] In the figure: 1. Oscilloscope; 11. Display screen; 12. Interface; 13. Fixed structure; 131. Base plate; 132. Articulated seat; 133. Limit block; 134. Flip cover; 135. Stop block; 136. Mounting block; 137. Bolt; 138. Elastic pad; 2. Temperature controller; 3. Terminal block; 4. DC adjustable power supply A; 5. DC power supply B; 6. Adjustable heating device; 7. Resistor; 8. DC 24V regulated power supply. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 A vehicle brake resistor temperature control and detection device includes an oscilloscope 1 and a thermostat 2 for monitoring temperature. One side of the oscilloscope 1 is also connected to a terminal block 3, which is used to connect the circuit. A DC 24V regulated power supply 8 is provided on one side of the terminal block 3. The DC 24V regulated power supply 8 is electrically connected to the terminal block 3. A DC adjustable power supply A4 and a DC power supply B5 are also provided on one side of the oscilloscope 1. The positive and negative poles of the DC adjustable power supply A4 are respectively electrically connected to the first and second points of the temperature signal acquisition end of the thermostat 2, continuously providing a 30V DC voltage to the temperature signal acquisition end of the thermostat 2. The positive and negative poles of the DC power supply B5 are respectively electrically connected to the third and fourth points of the temperature signal acquisition end of the thermostat 2, providing the thermostat 2 with a resistor over-temperature analog signal. An adjustable heating device 6 and a resistor 7 are provided on one side of the terminal block 3, and the resistor 7 is connected to the terminal block 3.

[0022] Terminal block 3 contains the ventilation over-temperature alarm signal and the thermostat 2 alarm signal.

[0023] The oscilloscope 1 uses no less than four channels to monitor the power supply voltage of the temperature signal acquisition end of the thermostat 2, the resistance row temperature analog signal voltage, the temperature control device alarm signal voltage and the ventilation overtemperature alarm signal voltage, and records the changes in each signal voltage in real time. The adjustable heating device 6 can heat the thermal protection switch to 70°C, and the action of the thermal protection switch is confirmed by the ventilation overtemperature alarm signal monitored by the oscilloscope 1.

[0024] The positive and negative poles of the DC 24V regulated power supply 8 are respectively connected to the fourth and second points of the terminal block 3, providing a stable DC regulated power supply for the fault logic control circuit and the thermal protection switch circuit of the thermostat 2. When the resistor row is overheated, that is, the voltage of the resistor row temperature analog signal exceeds 0.9 volts, the alarm signal of the thermostat 2 will change from a high level DC to a low level. When the ventilation temperature exceeds 70°C, the thermal protection switch is opened, and the ventilation overtemperature alarm signal will change from a high level DC to a low level. The temperature control device can be quickly tested separately, and the detection process is safe and reliable, which fully improves production efficiency and ensures maintenance quality.

[0025] In this embodiment: the DC adjustable power supply A4 continuously provides a 30V DC voltage to the temperature signal acquisition end of the thermostat 2, the DC power supply B5 provides the temperature controller 2 with a resistor row over-temperature analog signal, and the oscilloscope 1 is used to monitor the power supply voltage of the temperature signal acquisition end of the thermostat, the resistor row temperature analog signal voltage, the temperature control device alarm signal voltage and the ventilation over-temperature alarm signal voltage, and the changes in each signal voltage are recorded in real time. When the resistor row is over-temperature, that is, the resistor row temperature analog signal voltage exceeds 0.9V, the alarm signal of the thermostat 2 will change from a high-level DC to a low-level. When the ventilation temperature exceeds 70°C, the thermal protection switch is turned on, and the ventilation over-temperature alarm signal will change from a high-level DC to a low-level. The temperature control device can be quickly tested separately, the detection process is safe and reliable, fully improves production efficiency, ensures maintenance quality, and is conducive to quickly troubleshooting brake resistor faults.

[0026] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 2 、 Figure 3 and Figure 4 The surface of the oscilloscope 1 is provided with a display screen 11 and an interface 12. The interface 12 is used for inserting a cable connector and can be electrically connected to the terminal block 3. The front end of the oscilloscope 1 is also provided with a fixing structure 13, which is used to fix the cable.

[0027] The fixing structure 13 includes a base plate 131 arranged at the front end of the oscilloscope 1 and a hinged seat 132 arranged at the upper end of the base plate 131. The inner side of the hinged seat 132 is rotatably connected to a flip cover 134. A stop block 135 is provided at the bottom of the flip cover 134. Mounting blocks 136 are provided on the front and rear sides of the stop block 135. Bolts 137 for fixing are provided on the surface of the mounting block 136. Limiting blocks 133 are provided on the base plate 131 and the flip cover 134. Elastic pads 138 for wear resistance are provided on the inner wall of the limiting blocks 133. After the cable connector is inserted into the interface 12, the flip cover 134 is flipped over so that the limiting blocks 133 are close to each other, and the elastic pads 138 that can generate deformation can be used to clamp the cable and fixed with the help of bolts 137.

[0028] In this embodiment: after the cable connector is inserted into the interface 12, the flip cover 134 is flipped over so that the limit blocks 133 are close to each other, and the cable can be clamped by using the elastic pad 138 that can generate deformation, and fixed with the help of bolts 137, which can fix the position of the cable to prevent it from falling off, so as not to affect the normal use of the oscilloscope 1, and effectively keep the signal unobstructed.

[0029] Working principle: The DC adjustable power supply A4 continuously provides a 30V DC voltage to the temperature signal acquisition end of the thermostat 2, and the DC power supply B5 provides the temperature controller 2 with a resistor row over-temperature analog signal, and uses the oscilloscope 1 to monitor the power supply voltage, the resistor row temperature analog signal voltage, the temperature control device alarm signal voltage and the ventilation over-temperature alarm signal voltage of the temperature signal acquisition end of the thermostat, and records the changes in each signal voltage in real time. When the resistor row overheats, that is, the resistor row temperature analog signal voltage exceeds 0.9V, the alarm signal of the thermostat 2 will change from a high-level DC to a low-level. When the ventilation temperature exceeds 70°C, the thermal protection switch is turned on, and the ventilation over-temperature alarm signal will change from a high-level DC to a low-level. After inserting the cable connector into the interface 12, flip the flip cover 134 so that the limit blocks 133 are close to each other, and the elastic pad 138 that can generate deformation can be used to clamp the cable, and fixed with the help of bolts 137 to fix the cable position, which can maintain the normal use of the oscilloscope 1.

[0030] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. 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. A vehicle brake resistor temperature control and detection device, comprising an oscilloscope (1) and a temperature controller (2) for monitoring temperature, wherein one side of the oscilloscope (1) is further connected to a terminal block (3), the terminal block (3) being used to connect a circuit, and wherein: A DC 24V regulated power supply (8) is provided on one side of the terminal block (3), and the DC 24V regulated power supply (8) is electrically connected to the terminal block (3). A DC adjustable power supply A (4) and a DC power supply B (5) are also provided on one side of the oscilloscope (1). The positive and negative poles of the DC adjustable power supply A (4) are electrically connected to the first and second points of the temperature signal acquisition end of the temperature controller (2), and continuously provide a 30V DC voltage to the temperature signal acquisition end of the temperature controller (2). The positive and negative poles of the DC power supply B (5) are electrically connected to the third and fourth points of the temperature signal acquisition end of the temperature controller (2), and provide the temperature controller (2) with a resistance row over-temperature analog signal. An adjustable heating device (6) and a resistor (7) are provided on one side of the terminal block (3), and the resistor (7) is connected to the terminal block (3).

2. A vehicle brake resistor temperature control and detection device according to claim 1, characterized in that: The terminal block (3) contains a ventilation over-temperature alarm signal and a temperature controller (2) alarm signal.

3. The vehicle brake resistor temperature control and detection device according to claim 2, characterized in that: The oscilloscope (1) uses no less than four channels to respectively monitor the power supply voltage of the temperature signal acquisition end of the temperature controller (2), the resistance row temperature analog signal voltage, the temperature control device alarm signal voltage and the ventilation over-temperature alarm signal voltage. The adjustable heating device (6) can heat the thermal protection switch to 70°C.

4. The vehicle brake resistor temperature control and detection device according to claim 3, characterized in that: The positive and negative electrodes of the DC 24V regulated power supply (8) are connected to the fourth and second points of the terminal block (3) respectively.

5. The vehicle brake resistor temperature control and detection device according to claim 4, characterized in that: The surface of the oscilloscope (1) is provided with a display screen (11) and an interface (12). The interface (12) is used for inserting a cable connector and can be electrically connected to the terminal block (3). The front end of the oscilloscope (1) is also provided with a fixing structure (13).

6. The vehicle brake resistor temperature control and detection device according to claim 5, characterized in that: The fixing structure (13) includes a base plate (131) arranged at the front end of the oscilloscope (1) and a hinge seat (132) arranged at the upper end of the base plate (131), the inner side of the hinge seat (132) is rotatably connected to a flip cover (134), a stop block (135) is provided at the bottom of the flip cover (134), and mounting blocks (136) are provided on both the front and rear sides of the stop block (135), and bolts (137) for fixing are provided on the surface of the mounting block (136), and a limit block (133) is provided on both the base plate (131) and the flip cover (134), and an elastic pad (138) for wear resistance is provided on the inner wall of the limit block (133).

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