Integrated multifunctional sand box applied to low-floor tramcar

Abstract

An integrated multifunctional sand box applied to low-floor tram, comprising a box body, a sanding unit, a solenoid valve, an air path board, a heating rod, an electrical connector and a sand level sensor are installed on the box body, and are connected through pipelines and circuits to form a multifunctional module; an installation interface for docking with the bottom plate of the vehicle body is reserved on the multifunctional module, an air path interface for docking with the total air in the vehicle is reserved on the multifunctional module, a sand nozzle docking interface for the sand nozzle is reserved on the multifunctional module, and an electrical connector socket is also reserved on the multifunctional module to realize quick and convenient connection with the connector plug on the vehicle; the sand box is designed in an integrated manner, the sanding unit, the solenoid valve, the heating rod, the electrical connector and the sand level sensor are connected through pipelines and circuits to form a module, and the module is assembled in batches under the vehicle, and is mounted on the vehicle as a whole, so as to reduce the assembly difficulty of workers and improve the production efficiency.

Description

Technical Field

[0001] This utility model relates to an integrated multi-functional sandbox for use in low-floor trams. Background Technology

[0002] A sandbox is a safety device used in rail transit to achieve rapid braking by spreading sand. When a train brakes, it's necessary to increase the adhesion between the wheel hub and the rail to ensure reliable and stable braking. The sand spreading system provides gravel to increase this adhesion, assisting in smooth train operation and reliable braking. Generally, each carriage of a train is equipped with a sandbox, but the functional configuration and installation method vary depending on the train route. For low-floor trams, the floor clearance is small, while the sandbox needs to store a certain amount of sand and has a large volume. A key challenge is how to achieve integrated installation of the sandbox within a limited space. Furthermore, current manufacturing methods require interchangeability between sandboxes in different carriages, while also considering the portability of the sandbox's air and electrical circuits during assembly and connection. Therefore, this solution provides an integrated, multi-functional sandbox for low-floor trams. Summary of the Invention

[0003] To address the shortcomings mentioned above, this utility model provides an integrated multi-functional sand box for use in low-floor trams.

[0004] To achieve the above objectives, this utility model provides an integrated multi-functional sand box for low-floor trams, comprising a box body, on which a sand-spreading unit, a solenoid valve, an air circuit board, a heating rod, an electrical connector, and a sand level sensor are installed, forming a multi-functional module through pipeline and electrical connections; the multi-functional module has an installation interface for docking with the vehicle body floor, an air circuit interface for docking with the vehicle's main air supply, a sand flow interface for docking with the sand-spreading nozzle, and an electrical connector socket for quick and convenient connection to the vehicle's connector plug;

[0005] The sand box adopts an integrated design, which combines the sand spreading unit, solenoid valve, heating rod, electrical connector, and sand level sensor through pipeline and circuit connections, forming a module. This allows for batch assembly of the modules off the vehicle and overall loading onto the vehicle, reducing assembly difficulty for workers and improving production efficiency.

[0006] Furthermore, the enclosure is made of stainless steel sheet through bending and welding to ensure the overall strength of the enclosure;

[0007] In the above technical solution, the sand box and compressor are placed together under the seat. The upper part of the box with the solenoid valve is located on the vehicle, and the lower part of the box with the electrical connector is located under the vehicle. This ensures that the sand box has space for installation. The functions of storing sand, drying sand, and spreading sand meet the requirements of current vehicle use. The sand box adopts an integrated design and installation, which enables mass assembly under the vehicle, effectively reducing assembly difficulty and improving production efficiency.

[0008] Furthermore, the sand-spreading unit has a manual mechanical adjustment function, which allows for manual adjustment of the amount of sand spread.

[0009] In the above technical solution, the amount of sand spread is adjusted by adjusting the relative opening size, referring to the solution involved in publication number CN 222793492 U.

[0010] Furthermore, the heating rod contains a temperature control device, which is set to disconnect at 60°C and reset and close at 45°C;

[0011] In the above technical solution, when encountering rainy or snowy weather in winter, the heating rod is energized and heated. When the surface temperature of the heating rod reaches 60°C, the temperature control automatically disconnects and the heating rod stops heating. When the surface temperature of the heating rod drops to 45°C, the temperature control automatically closes and heating starts again, and the cycle continues, thereby preventing the sand and gravel in the sand box from clumping due to the damp weather.

[0012] Furthermore, there are two sand level sensors respectively located at the bottom and top of the housing, with the bottom sand level sensor being a normally closed sensor and the top sand level sensor being a normally open sensor.

[0013] In the above technical solution, when the amount of sand in the sand box is insufficient, the normally closed sensor at the bottom opens to indicate that sand needs to be added to the driver's cab; when the sand is full, the normally open sensor at the top closes to indicate that the sand box in the driver's cab is full.

[0014] The advantages of this utility model over the prior art are as follows:

[0015] 1. The space for sand box installation is ensured, and the functions of storing, drying, and spreading sand meet the requirements of current vehicle use. The sand box adopts an integrated design and installation, enabling mass off-vehicle assembly, effectively reducing assembly difficulty and improving production efficiency.

[0016] 2. The sand spreading unit has a function to manually adjust the amount of sand spread; the heating rod has an automatic temperature control device; the sand box has normally closed and normally open sensors; the sand box has a solenoid valve to switch the air path direction; the sand box has an electrical connector. Attached Figure Description

[0017] Figure 1 A perspective view of an integrated multi-functional sandbox for use in low-floor trams;

[0018] Figure 2 A perspective view of an integrated multi-functional sandbox for use in low-floor trams;

[0019] Figure 3 A perspective view of an integrated multi-functional sandbox for use in low-floor trams;

[0020] Figure 4 The diagram shows the airflow path of the sand-spreading unit involved (arrows indicate airflow direction).

[0021] Figure 5 The circuit diagram of the sand box involved is shown.

[0022] In the diagram: 1. Housing; 2. Sand spreading unit; 3. Solenoid valve; 4. Air circuit board; 5. Heating rod; 6. Electrical connector; 7. Sand level sensor; 8. Mounting interface; 9. Electrical connector socket. Detailed Implementation

[0023] like Figures 1-5As shown in the figure, an integrated multi-functional sand box for low-floor trams according to an embodiment of this utility model includes a box body 1. The box body 1 is equipped with a sand-spreading unit 2, a solenoid valve 3, an air circuit board 4, a heating rod 5, an electrical connector 6, and a sand level sensor 7. These components are connected by pipelines and circuits to form a multi-functional module. The multi-functional module has an installation interface 8 for docking with the tram floor, and an air circuit interface for docking with the main air supply inside the tram (the air circuit interface is located on the air circuit board 4; controlled by the solenoid valve 3, the main air supply inside the tram supplies air to different sand-spreading units 2 on the box body 1 via the air circuit board 4, allowing for selective air supply to the two sand-spreading units 2, enabling the driver's cab to switch between different sand boxes for sand spreading according to different operating directions). The multi-functional module also has a sand flow interface for docking with the sand-spreading nozzles, and an electrical connector socket 9 for quick and convenient connection to the onboard connector plug. The system adopts an integrated design, combining the sand-spreading unit 2, solenoid valve 3, heating rod 5, electrical connector 6, and sand level sensor 7 through pipeline and electrical connections, forming a single module. This allows for batch assembly off-vehicle and overall installation, reducing assembly difficulty for workers and improving production efficiency. The housing 1 is made of stainless steel sheet through bending and welding to ensure its overall strength. The sand box and compressor are placed under the seat, with the upper half of housing 1 with solenoid valve 3 located on the vehicle and the lower half with electrical connector 6 located off-vehicle, ensuring sufficient space for sand box installation. The functions of storing, drying, and spreading sand meet the requirements of current vehicle use. The integrated design and installation of the sand box enable batch off-vehicle assembly, effectively reducing assembly difficulty and improving production efficiency. The sand-spreading unit 2 has a manual mechanical adjustment function, allowing manual adjustment of the sand-spreading amount. The sand-spreading amount is adjusted by adjusting the relative opening size (see reference publication number CN). The solution involved in 222793492 U includes: The heating rod 5 contains a temperature control device, set to disconnect at 60℃ and reset and close at 45℃; In winter, during rainy or snowy weather, the heating rod 5 is energized and heated. When the surface temperature of the heating rod 5 reaches 60℃, the temperature control automatically disconnects, and the heating rod 5 stops heating; When the surface temperature of the heating rod 5 drops to 45℃, the temperature control automatically closes, and heating resumes, continuously cycling to prevent the sand in the sand box from clumping due to damp weather; There are two sand level sensors 7, located at the bottom and top of the box body 1 respectively. The bottom sand level sensor 7 is a normally closed sensor, and the top sand level sensor 7 is a normally open sensor; When the sand level in the sand box is insufficient, the bottom normally closed sensor disconnects, indicating to the driver's cab that sand needs to be added; When the sand is full, the top normally open sensor closes, indicating to the driver's cab that the sand box is full.

[0024] The design ensures sufficient space for sand box installation, and the functions of storing, drying, and spreading sand meet the requirements of current vehicle use. The sand box adopts an integrated design for mass off-vehicle assembly, effectively reducing assembly difficulty and improving production efficiency. The sand spreading unit has a manual adjustment function for the amount of sand spread; the heating rod has an automatic temperature control device; the sand box has normally closed and normally open sensors; the sand box has a solenoid valve for switching the air path direction; and the sand box has an electrical connector.

[0025] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;

[0026] The core technologies of this sandbox are reflected in the following four aspects.

[0027] 1. The sand box adopts an integrated design technology: the sand spreading unit, solenoid valve, heating rod, electrical connector, and sand level sensor are connected by pipelines and electrical connections to form a single module. The module has an external interface for fixed docking with the vehicle body. The electrical interfaces within the module are integrated, and the external interfaces are consistent; this allows for batch assembly of the modules off-vehicle and overall mounting onto the vehicle, reducing assembly difficulty for workers and improving production efficiency.

[0028] 2. Manual mechanical adjustment technology for sand spreading amount: The sand spreading unit in the sand box has a mechanical adjustment function, which can adjust the amount of sand spread.

[0029] 3. Automatic temperature control technology for heating rods: The heating rods in the sand box contain a temperature control device that disconnects at 60°C and resets at 45°C.

[0030] 4. Automatic control technology for sand level sensors: The sand box contains two sand level sensors, a normally closed sensor at the bottom and a normally open sensor at the top. When the sand is insufficient, the normally closed sensor at the bottom opens to indicate that sand needs to be added; when the sand is full, the normally open sensor at the top closes to indicate that the sand is full.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated multi-functional sandbox for use in low-floor trams, characterized in that: The system includes a housing, on which a sand-spreading unit, a solenoid valve, an air circuit board, a heating rod, an electrical connector, and a sand level sensor are installed. These components are connected by pipelines and electrical circuits to form a multi-functional module. The multi-functional module has an installation interface for docking with the vehicle's floor, an air circuit interface for docking with the vehicle's main air supply, a sand flow interface for docking with the sand-spreading nozzle, and an electrical connector socket for quick and convenient connection to the vehicle's connector plug.

2. The integrated multi-functional sand box for low-floor trams according to claim 1, characterized in that: The enclosure is made of stainless steel sheet through bending and welding to ensure the overall strength of the enclosure.

3. The integrated multi-functional sand box for low-floor trams according to claim 2, characterized in that: The sand-spreading unit has a manual mechanical adjustment function, which allows manual adjustment of the amount of sand spread.

4. The integrated multi-functional sand box for low-floor trams according to claim 3, characterized in that: The heating rod contains a temperature control device, which is set to disconnect at 60°C and reset and close at 45°C.

5. An integrated multi-functional sand box for low-floor trams according to claim 4, characterized in that: There are two sand level sensors, one at the bottom and one at the top of the housing. The sand level sensor at the bottom is a normally closed sensor, and the sand level sensor at the top is a normally open sensor.

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