Terminal control cabinet of railway turnout snow blowing device
Patent Information
- Application Number
- CN202522500226.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-25
AI Technical Summary
Existing electric heating turnout snow removal devices consume a lot of power and are prone to secondary icing in severe cold weather, making it impossible to effectively remove snow from the turnout operating rods and indicator rods. This increases the pressure on railway power supply and is not environmentally friendly.
A terminal control cabinet for a railway turnout snow blowing device was designed. It uses a temperature sensor and a PTC heater, combined with a low-temperature resistant frequency converter and multiple safety protection mechanisms, to achieve automated and precise control, reduce power consumption and prevent icing.
It has enabled stable operation of equipment in low-temperature environments, reduced energy consumption, prevented secondary icing, improved snow removal efficiency and equipment durability, and meets low-carbon and environmental protection requirements.
Smart Images
Figure CN224935960U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of turnout snow removal devices, specifically relating to a terminal control cabinet for a railway turnout snow blowing device. Background Technology
[0002] The main snow removal technology for railway turnouts utilizes electrically heated snow removal devices, which consist of three main parts: the turnout's electric heating component, the equipment control box, and the monitoring system in the duty room. The primary manufacturer is the Xi'an Signal Factory, a subsidiary of China Railway Signal & Communication Group Co., Ltd., whose electric heating systems, developed for different turnout types, are now the mainstream railway turnout snow removal devices in China. Electrically heated turnout snow removal devices offer advantages such as good snow removal efficiency and relatively simple installation. However, their high power consumption becomes increasingly apparent during use. On average, the annual electricity cost for snow removal of a single turnout is 100,000 to 200,000 yuan, significantly increasing the pressure on railway power supply. Furthermore, the electric heating method is prone to secondary icing in heavy snow and severe cold weather, and snow accumulation on turnout operating rods and indicator rods cannot be effectively cleared, requiring manual secondary cleaning. This does not align with the industry's low-carbon and environmentally friendly development direction. Utility Model Content
[0003] To address the technical problem of high power consumption in the above-mentioned electric heating turnout snow removal device during use, this utility model provides a terminal control cabinet for a railway turnout snow blowing device.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A terminal control cabinet for a railway turnout snow blowing device includes a cabinet, a mounting base plate installed inside the cabinet, a standard rail, a connector mounting plate, a main controller, a low-temperature resistant frequency converter, a temperature sensor, a PTC heater, a control panel, a frequency converter control panel, a surge protector, a terminal block, a main contactor, a fuse, and a main circuit breaker. The standard rail is fixed to the mounting base plate, and the main controller and terminal block are fixed to the standard rail via a back clamp. The connector mounting plate is fixed to the cabinet with bolts and integrates a power input connector, a control output connector, a signal input connector, a signal transmission connector, and a multi-functional connector. The control panel is fixed to the mounting base plate via a panel bracket and is connected to the main controller, terminal block, and main contactor via an integrated wiring harness. The board is mounted to the control panel via screw holes on the back and connects to the low-temperature inverter. The low-temperature inverter is fixed to the mounting base plate with screws and connected to the main controller and control panel via an integrated wiring harness. The surge protector is connected to the power connector, main contactor, main controller, and cabinet via the integrated wiring harness. The fuse connects the integrated wiring harness to the main contactor and the multi-functional connector interface of the connector mounting plate. The temperature sensor is connected to the terminal block and the main controller via the signal connector on the connector mounting plate and is powered by the main controller. The PTC heater is connected to the main controller. The power input connector is connected to 380VAC three-phase power, which is connected to the terminal block via the surge protector, main circuit breaker, and fuse in sequence. After branching, the power is supplied to the main controller and simultaneously to the low-temperature inverter via the main circuit breaker.
[0005] The connector mounting plate integrates a power input connector, a control output connector, a signal input connector, a signal transmission connector, and a multi-functional connector, which are used to realize power access, command transmission, and device connection.
[0006] The temperature sensor transmits the temperature signal inside the cabinet to the main controller via RS485, and the main controller controls the on / off state of the PTC heater based on the temperature signal.
[0007] The control panel is equipped with a start button, a stop button, and an emergency stop button, and supports local control operations. Commands are transmitted to the main controller via an integrated wiring harness.
[0008] The frequency converter control panel supports frequency adjustment and parameter setting, and can be directly connected to the low-temperature resistant frequency converter to realize command transmission.
[0009] The low-temperature resistant frequency converter has a parameter self-matching function, which can be adapted to the air compressor of the turnout snow removal device without additional pairing operation.
[0010] The main controller supports receiving remote control commands. The remote commands are transmitted to the main controller via the signal input connector, processed by the main controller, and then sent to each execution component.
[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention ensures a suitable internal operating temperature by adding sensors and a PTC heating device, thereby increasing the equipment's durability and low-temperature stability. Furthermore, the snow removal device features a pairing-free function, with the low-temperature resistant inverter automatically matching its parameters. Attached Figure Description
[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0013] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0014] Figure 1 This is an exploded view of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the signal transmission of this utility model; Figure 5 This is a connection block diagram of the present invention.
[0015] Wherein: 1 is the cabinet, 2 is the mounting base, 3 is the standard rail, 4 is the connector mounting plate, 5 is the main controller, 6 is the low-temperature inverter, 7 is the temperature sensor, 8 is the PTC heater, 9 is the control panel, 10 is the inverter control panel, 11 is the surge protector, 12 is the terminal block, 13 is the main contactor, 14 is the fuse, 15 is the main circuit breaker, 41 is the power input connector, 42 is the control output connector, 43 is the signal input connector, 44 is the signal transmission connector, 45 is the multi-function connector, and 91 is the panel bracket. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the claims of this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0019] This embodiment provides a terminal control cabinet for a railway turnout snow blowing device. With the main controller 5 as the core, it integrates functional modules such as power supply, signal acquisition, command input, execution control, and safety protection. Through the coordinated operation of each component, it achieves automated and precise control of the turnout snow blowing device. The specific process is as follows: I. Power Supply and Safety Protection Mechanism Power supply is fundamental to the operation of the control cabinet, and multiple safety protection measures are in place to ensure the safety of the equipment and the power grid. The specific path and logic are as follows: 1. Power Supply and Initial Protection: 380VAC three-phase power is supplied to the cabinet 1 through the power input connector 41 on the connector mounting plate 4. The power first flows through the surge protector 11, whose core function is to filter out abnormal signals such as transient overvoltage and lightning interference in the power grid, and to prevent high voltage surges from damaging core components such as the main controller 5 and the low temperature inverter 6. At the same time, the surge protector 11 is connected to the cabinet 1 to achieve grounding protection, further improving the safety level.
[0020] 2. Power Distribution and Hierarchical Protection: The surge-protected current is divided into two paths. One path passes through the main circuit breaker 15 (main power control switch) and fuse 14 (overcurrent protection element) before connecting to terminal block 12, which then branches off to power the main controller 5 of the core control unit. The other path directly supplies the low-temperature inverter 6 via the main circuit breaker 15, providing power support for the snow blowing device. The main circuit breaker 15 can manually or automatically disconnect the main power supply in case of equipment failure, while fuse 14 blows when an overcurrent occurs in the circuit, forming dual overcurrent protection.
[0021] II. Control Command Input Mode The control cabinet supports both local operation and remote control modes to meet the control needs of different scenarios and ensure the reliability of command transmission. 1. Local control command input: Operators can initiate operation commands through the start button, stop button and emergency stop button on the control panel 9. These commands are transmitted directly to the main controller 5 via the integrated wiring harness to realize local start-up and stop and emergency avoidance control of the equipment. At the same time, the frequency converter control panel 10 integrated into the control panel 9 can directly adjust the frequency and set the operating parameters of the low temperature frequency converter 6. Commands are transmitted in real time through the direct connection between the two to meet the needs of different snow blowing intensities.
[0022] 2. Remote control command input: The commands from the remote control center are transmitted to the main controller 5 through the signal input connector 43 on the connector mounting plate 4. After the main controller 5 parses the commands, it issues corresponding operation commands to each execution component, realizing remote control in unattended scenarios and improving the level of intelligence of turnout snow blowing operations.
[0023] III. Core Signal Acquisition and Central Processing The main controller 5 collects various operating signals in real time and performs logic processing to ensure that the equipment's operating status is controllable. 1. Temperature Signal Acquisition and Temperature Control Logic: Temperature sensor 7 is powered by main controller 5 and continuously monitors the internal ambient temperature of cabinet 1. The temperature data is transmitted to main controller 5 via RS485 bus through signal input connector 43. Main controller 5 has built-in temperature threshold parameters. When the detected temperature is lower than the preset value, it automatically sends a start command to PTC heater 8 to heat the interior of cabinet 1. When the temperature reaches the normal operating range, main controller 5 cuts off the power to PTC heater 8, achieving equipment protection and energy-saving control in low-temperature environments.
[0024] 2. Operation status feedback and closed-loop monitoring: The operation status signals of the low-temperature inverter 6, main contactor 13 and other actuators are fed back to the main controller 5 through the integrated wiring harness, terminal block 12 and signal transmission connector 44. The main controller 5 monitors the signals in real time. If an abnormal operation of the component is detected, the protection mechanism can be triggered immediately, such as cutting off the relevant circuit through the main contactor 13 or starting the emergency shutdown procedure.
[0025] IV. Execution Control and Equipment Interaction Based on the parsed instructions and collected signals, the main controller 5 sends control commands to each actuator to achieve coordinated operation of the turnout snow blowing device: 1. Snow blowing power control: The main controller 5 sends an operation command to the low-temperature resistant frequency converter 6. With its own parameter self-matching function, the low-temperature resistant frequency converter 6 can directly adapt to the compressor of the turnout snow blowing device without additional pairing operation. According to the frequency set by the frequency converter control panel 10 or the remote command requirements, it adjusts the output power and drives the compressor to run as required to achieve precise snow blowing.
[0026] 2. Circuit control and signal relay: Under the control of the main controller 5, the main contactor 13 realizes the switching of the circuit on and off, and works with the terminal block 12 to complete the power and signal relay between the components; the control output connector 42 and the multi-function connector 45 on the connector mounting plate 4 are responsible for signal interaction and linkage control with external equipment (such as snow blower head drive mechanism, etc.) to ensure that the entire snow blowing system operates according to unified logic.
[0027] V. Full-process security mechanism In addition to surge protection and overcurrent protection in the power supply process, the control cabinet constructs multiple safety barriers throughout the entire operation process: the emergency stop button on the control panel 9 can directly trigger the main controller 5 to cut off the power supply to all actuators in case of an emergency; when the main controller 5 detects abnormal temperature, component failure, command conflict, etc., it can quickly cut off the relevant circuit through the main contactor 13, and at the same time, it can report the fault information to the superior system through the signal transmission connector 44, so that the operation and maintenance personnel can deal with it in time and ensure the safe and stable operation of the turnout snow blowing operation.
[0028] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.
Claims
1. A terminal control cabinet for a railway turnout snow blowing device, characterized in that: The system includes a cabinet (1), a mounting base plate (2) installed inside the cabinet (1), a standard rail (3), a connector mounting plate (4), a main controller (5), a low-temperature inverter (6), a temperature sensor (7), a PTC heater (8), a control panel (9), a frequency converter control panel (10), a surge protector (11), a terminal block (12), a main contactor (13), a fuse (14), and a main circuit breaker (15); the standard rail (3) is fixed to the mounting base plate (2), and the main controller (5) communicates with the terminal block (12). The back bayonet is fixed to the standard rail (3); the connector mounting plate (4) is fixed to the cabinet (1) by bolts, and integrates the power input connector (41), control output connector (42), signal input connector (43), signal transmission connector (44) and multi-function connector (45); the control panel (9) is fixed to the mounting base plate (2) by the panel bracket (91), and is connected to the main controller (5), terminal block (12) and main contactor (13) via integrated wiring harness; the frequency converter control panel (10) is installed through the back screw holes. Installed on the control panel (9) and connected to the low-temperature inverter (6); the low-temperature inverter (6) is fixed to the mounting base plate (2) by screws and connected to the main controller (5) and the control panel (9) via an integrated wiring harness; the surge protector (11) is connected to the power input connector (41), the main contactor (13), the main controller (5) and the cabinet (1) via an integrated wiring harness; the fuse (14) is connected to the multi-functional connector (45) of the integrated wiring harness, the main contactor (13) and the connector mounting plate (4); the temperature sensor The device (7) is connected to the terminal block (12) and the main controller (5) respectively via the signal input connector (43) of the connector mounting plate (4), and is powered by the main controller (5); the PTC heater (8) is connected to the main controller (5); the power input connector (41) is connected to 380VAC three-phase power, and is connected to the terminal block (12) in sequence via the surge protector (11), the main circuit breaker (15) and the fuse (14), and then supplied to the main controller (5) after branching, and at the same time supplied to the low temperature inverter (6) via the main circuit breaker (15).
2. The terminal control cabinet for a railway turnout snow blowing device according to claim 1, characterized in that: The connector mounting plate (4) integrates a power input connector (41), a control output connector (42), a signal input connector (43), a signal transmission connector (44), and a multi-function connector (45) to realize power access, command transmission, and device connection.
3. The terminal control cabinet for a railway turnout snow blowing device according to claim 1, characterized in that: The temperature sensor (7) transmits the temperature signal inside the cabinet (1) to the main controller (5) via RS485. The main controller (5) controls the on / off state of the PTC heater (8) according to the temperature signal.
4. The terminal control cabinet of a railway turnout snow blowing device according to claim 1, characterized in that: The control panel (9) is equipped with a start button, a stop button and an emergency stop button, and supports local control operation. The instructions are transmitted to the main controller (5) via an integrated wiring harness.
5. The terminal control cabinet of a railway turnout snow blowing device according to claim 1, characterized in that: The frequency conversion control panel (10) supports frequency adjustment and parameter setting, and is directly connected to the low-temperature resistant frequency converter (6) to realize command transmission.
6. The terminal control cabinet of a railway turnout snow blowing device according to claim 1, characterized in that: The low-temperature resistant frequency converter (6) has a parameter self-matching function, and can be adapted to the compressor of the turnout snow removal device without additional pairing operation.
7. The terminal control cabinet of a railway turnout snow blowing device according to claim 1, characterized in that: The main controller (5) supports receiving remote control commands. The remote commands are transmitted to the main controller (5) via the signal input connector (43) and then processed by the main controller (5) and sent to each execution component.