Sand adding device for motor train unit

By designing the sand replenishing device of the EMU, the wind pressure and electrical control system are used to solve the problems of dust flying and sand injection discontinuity in the traditional sand replenishing method, and a fast and safe sand replenishing process is achieved, which improves work efficiency and reduces the cost. Negative impacts of the environment and personnel.

CN222329712UActive Publication Date: 2025-01-10CHINA RAILWAY WUHAN BUREAU GRP CO LTD WUHAN EMU
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Patent Information

Application Number
CN202420830117.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-22
Publication Date
2025-01-10
Estimated Expiration
2034-04-22

AI Technical Summary

Technical Problem

The sand filling method of traditional EMU sand spreading devices has problems such as flying sand and dust and discontinuous sand injection, which affects work efficiency and has a negative impact on the environment and the health of operators.

Method used

A EMU sand replenishment device including No. 1 pipeline, No. 2 pipeline, No. 3 pipeline, Sand storage tank and control device was designed. The sand replenishment process was completed by using wind pressure and electronic control system, equipped with filters and reducing Pressure valves, solenoid valves, stirring devices and heating devices quickly and safely add sand through mobile tools, and monitor the amount of sand through four-channel weighing sensors.

Benefits of technology

The sanding process is completed quickly and safely, saving labor costs, improving operational efficiency, and reducing the impact on the environment and operators.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sand adding device for a motor train unit. The sand adding device comprises a first pipeline, a second pipeline, a third pipeline, a sand storage tank and a control device, an air inlet, a filter, a pressure reducing valve, a first three-way valve, a first electromagnetic valve, a second three-way valve and a sand outlet are sequentially arranged on the first pipeline; a second electromagnetic valve is arranged on the second pipeline; a screwing switch is arranged on the third pipeline; the sand storage tank is provided with three connectors, a stirring device and a heating device are further arranged in the sand storage tank, and the stirring device is driven by an external direct current motor. One end of the second pipeline is connected with the first three-way valve, and the other end is connected with a left interface of the sand storage tank; one end of the third pipeline is connected with a bottom interface of the sand storage tank, and the other end is connected with the second three-way valve; the control device is connected with the first electromagnetic valve, the second electromagnetic valve and the direct current motor in a wired or wireless mode. The labor cost is saved, the sand adding process can be rapidly completed, and the operation efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to a sand adding device for a motor vehicle group, specifically, to an intelligent sand adding device for a Fuxing-type motor vehicle group and the field of brake technology, and in particular to a CR400BF-Z type intelligent sand adding device for a motor vehicle group. Background Art

[0002] As the scale of my country's high-speed rail continues to expand, the number of EMUs in operation is increasing, and the corresponding operation and maintenance pressure is also increasing. The main function of the EMU sand spreading device is to increase the friction between the wheel and rail and improve the adhesion between the wheel and rail under specific conditions, such as starting, braking or after bad weather, to prevent the wheels from idling or sliding, thereby improving the traction and braking force of the EMU.

[0003] In order to ensure the normal operation of the EMU sand-spreading device, it is necessary to add sand to the EMU sand-spreading device regularly. The traditional way of adding sand to the EMU sand-spreading device may cause problems such as flying sand and discontinuous sand injection, which not only affects the work efficiency, but also may have a negative impact on the environment and the health of operators. Utility Model Content

[0004] In order to solve this technical problem, the utility model aims to solve the problems of flying sand and discontinuous sand injection in the traditional sand-spreading device of EMU, which not only affects the work efficiency but also may have a negative impact on the environment and the health of operators.

[0005] The technical solution adopted by the utility model is: a sand adding device for a train set, comprising a No. 1 pipeline, a No. 2 pipeline, a No. 3 pipeline, a sand storage tank and a control device; the No. 1 pipeline, the No. 2 pipeline, the No. 3 pipeline, the sand storage tank and the control device are arranged as a whole on a mobile tool;

[0006] The No. 1 pipeline is provided with a filter, a pressure reducing valve, a No. 1 three-way valve, a No. 1 solenoid valve, a No. 2 three-way valve and a sand outlet in sequence. When adding sand, the sand outlet is connected to the special sand adding port of the EMU;

[0007] The No. 2 pipeline is provided with a No. 2 solenoid valve; the No. 3 pipeline is provided with a rotary switch; the sand storage tank has three interfaces, of which the upper interface located on the upper end surface is the sand injection port, the upper interface has a built-in metal grid for filtering impurities, the left interface of the sand storage tank is used to connect the wind source transported by the No. 2 pipeline, and the bottom interface of the sand storage tank is used to add sand to the No. 1 pipeline through the No. 2 three-way valve; the sand storage tank is also provided with a stirring device and a heating device, the stirring device is driven by an external DC motor, and the heating device;

[0008] One end of the No. 2 pipeline is connected to the No. 1 three-way valve, and the other end is connected to the left interface of the sand storage tank;

[0009] One end of the No. 3 pipeline is connected to the bottom interface of the sand storage tank, and the other end is connected to the No. 2 three-way valve;

[0010] The control device is connected with the No. 1 solenoid valve, the No. 2 solenoid valve and the DC motor in a wired or wireless manner.

[0011] Furthermore, the mobile tool is a self-powered tricycle, the tricycle has a cruising range of no less than km and can be charged with ACV voltage.

[0012] Furthermore, a sandbag is provided at the end of the movable vehicle body.

[0013] Furthermore, a filter is provided on the No. 1 pipeline between the input air source and the pressure reducing valve.

[0014] Furthermore, the No. 1 pipeline at the air inlet is a retractable pipeline.

[0015] Furthermore, a metal filter is provided at the sand outlet.

[0016] Furthermore, a proximity sensor is provided at the sand adding port of the sand storage tank, which is interlocked with the internal stirring device and the heating device. A four-way weighing sensor is provided at the lower part of the sand storage tank for recording the amount of sand added, and at the same time, it carries an alarm function for insufficient sand addition when the sand and gravel in the sandbox exceed the bottom.

[0017] Furthermore, a rubber protective cover is provided on the No. 1 pipeline near the sand outlet.

[0018] The beneficial effects and features of the utility model are:

[0019] 1. The sand-adding device for EMUs of the utility model transforms the heavy physical labor generated by manual sand-adding into the work completed by wind pressure and electric control system, thereby saving labor costs, being able to quickly complete the sand-adding process and improving work efficiency.

[0020] 2. The sand adding device for EMU of the utility model, the design of the construction, control and operation area of ​​the sand adding device meet the daily work needs, are convenient for the operators to operate, and meet the requirements of relevant operation documents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Provides a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of a preferred embodiment of the utility model mounted on a mobile tool;

[0023] Figure 3 This is a schematic diagram of the structure of a sand storage tank in a preferred embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the partial structure of the rubber protective cover of a preferred embodiment of the utility model.

[0025] Numbers in the figure: 1- No. 1 pipeline, 2- No. 2 pipeline, 3- No. 3 pipeline, 4- sand storage tank, 5- control device, 6- moving tool, 7- sandbag, 8- iron bracket, 11- air inlet, 12- filter, 13- pressure reducing valve, 14- No. 1 three-way valve, 15- No. 1 solenoid valve, 16- No. 2 three-way valve, 17- sand outlet, 18- metal filter, 19- rubber protective cover, 21- No. 2 solenoid valve, 31- rotary switch, 41- stirring device, 42- heating device, 43- DC motor, 44- proximity sensor, 45- four-way weighing sensor, 46- metal grille; DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings:

[0027] Please refer to Figure 1 , Figure 2 The utility model relates to a sand adding device for a train set, comprising a No. 1 pipeline 1, a No. 2 pipeline 2, a No. 3 pipeline 3, a sand storage tank 4 and a control device 5; the No. 1 pipeline 1, the No. 2 pipeline 2, the No. 3 pipeline 3, the sand storage tank 4 and the control device 5 are integrally arranged on a mobile tool 6;

[0028] The No. 1 pipeline 1 is provided with an air inlet 11, which is connected to an air source and provides an air pressure of not less than 600Kpa, a filter 12, a pressure reducing valve 13, a No. 1 three-way valve 14, a No. 1 solenoid valve 15, a No. 2 three-way valve 16 and a sand outlet 17 in sequence. When adding sand, the sand outlet 17 is connected to the special sand adding port of the EMU;

[0029] The No. 2 pipeline 2 is provided with a No. 2 solenoid valve 21 to receive the instructions given by the control system; the No. 3 pipeline 3 is provided with a rotary switch 31; the sand storage tank is made of polypropylene, a white cone-shaped object, used to store no less than 50L of sand and gravel, and is placed on the iron bracket 8 of the mobile tool. There are three interfaces, among which the upper interface located on the upper end surface is the sand injection port, and a metal grille 46 is built into the upper interface to filter impurities. The left interface of the sand storage tank is used to connect the wind source transported by the No. 2 pipeline 2, and the bottom interface of the sand storage tank is used to add sand to the No. 1 pipeline 1 through the No. 2 three-way valve 16; the sand storage tank 4 is also provided with a stirring device 41 and a heating device 42, and the stirring device 41 is driven by an external DC motor 42, and the heating device 42; the sand storage tank sand injection port is provided with a proximity sensor 44, which is interlocked with the internal stirring device and heating device, that is, when the sand and gravel are damp and agglomerated, the stirring device and heating device can be started. At this time, the sand injection port is closed and sand cannot be added.

[0030] In some other embodiments, if the sand is severely compacted, there is a large resistance to stirring, and the stirring device is difficult to work. A vibrating screening device can also be set at the bottom of the sand storage tank (to replace the stirring device), and the sand is shaken apart by vibration and the lumps and impurities are screened out. The core is a vibrating screening box with a screen. The vibrating screening box is set in the sand storage tank. The screening box can be made of steel plate or high-strength plastic, and the shape can be a rectangular or cylindrical. The inner wall of the box needs to be treated with anti-adhesion to prevent sand from sticking. The vibration excitation mechanism can use an eccentric vibration motor or a linear vibration motor. The eccentric vibration motor is installed on one side of the screening box and generates vibration through an eccentric rotor.

[0031] On the other hand, a four-way weighing sensor 45 is arranged at the lower part of the sand storage tank, which is used to record the amount of sand added and at the same time has an alarm function when the sand in the sandbox exceeds the bottom and the sand is insufficient.

[0032] One end of the No. 2 pipeline 2 is connected to the No. 1 three-way valve 14, and the other end is connected to the left interface of the sand storage tank 5;

[0033] One end of the No. 3 pipeline 3 is connected to the bottom interface of the sand storage tank 5, and the other end is connected to the No. 2 three-way valve 16;

[0034] The control device 5 is connected to the No. 1 solenoid valve 15, the No. 2 solenoid valve 21 and the DC motor 42 in a wired or wireless manner. The control system is controlled by a single-chip microcomputer, and the relay is integrated on the PCB board.

[0035] As a preferred solution, the mobile tool 6 is a self-powered tricycle, which has a cruising range of no less than 50 km and can be charged with an AC220V voltage.

[0036] As a preferred solution, a sandbag 7 for storing sand is also provided at the end of the movable vehicle body 1, and sand can be added into the sand storage tank through the sandbag.

[0037] As a preferred solution, in order to prevent impurities from clogging the pipeline, a filter 5 is further provided on the No. 1 pipeline between the input air source 4 and the pressure reducing valve 5 .

[0038] As a preferred solution, in order to adapt to different working environments, the No. 1 pipeline at the air inlet 11 is a retractable pipeline, which is used to connect the wind source in the warehouse and to provide a wind pressure of not less than 600Kpa.

[0039] Please refer to Figure 4 As a preferred solution, the sand outlet 17 is provided with a metal filter 18 and a rubber protective cover 19.

[0040] Here’s how to use it:

[0041] 1. Drive the mobile tool (tricycle) of the device to an appropriate position near the EMU.

[0042] 2. Connect the air inlet of pipe No. 1 to the air source in the garage that provides a wind pressure of no less than 600Kpa.

[0043] 3. Check whether there is enough sand in the sand storage tank. If the sand is insufficient, add more sand from the sand injection port on the top of the sand storage tank. The metal grid can filter out impurities when injecting sand.

[0044] 4. If it is found that the sand and gravel in the sand storage tank are damp and clumped, the stirring device and heating device in the sand storage tank can be started through the control device to stir and heat the sand and gravel.

[0045] 5. Connect the sand outlet of pipeline No. 1 to the dedicated sand adding port of the EMU.

[0046] 6. Send corresponding instructions to solenoid valve No. 1 and solenoid valve No. 2 through the control device to start the air pressure and sand adding process.

[0047] 7. After the wind pressure airflow passes through the filter, pressure reducing valve and other components of pipeline No. 1, it will be blown into the sand storage tank from pipeline No. 2 to generate negative pressure, so that the sand and gravel are transported from pipeline No. 3 at the bottom of the sand storage tank to the sand outlet of pipeline No. 1.

[0048] 8. A metal filter is installed at the sand outlet to filter out larger particles of impurities.

[0049] 9. Determine whether enough sand has been added based on the reading of the weighing sensor. If not, repeat steps 7-8.

[0050] 10. After adding sand, close the solenoid valve and air source, disconnect the pipeline, and put away the equipment.

[0051] 11. If needed, the remaining gravel can be collected into the sandbag at the end.

[0052] At present, this device is well used in the CR400BF-Z intelligent Fuxing EMU, saving labor costs, quickly completing the sand adding process and improving work efficiency.

[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the structural relationship and principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A sand adding device for EMU, characterized in that , comprising a No. 1 pipeline (1), a No. 2 pipeline (2), a No. 3 pipeline (3), a sand storage tank (4) and a control device (5); the No. 1 pipeline (1), the No. 2 pipeline (2), the No. 3 pipeline (3), the sand storage tank (4) and the control device (5) are arranged as a whole on a mobile tool (6); The No. 1 pipeline (1) is provided with an air inlet (11), a filter (12), a pressure reducing valve (13), a No. 1 three-way valve (14), a No. 1 solenoid valve (15), a No. 2 three-way valve (16) and a sand outlet (17) in sequence; The No. 2 pipeline (2) is provided with a No. 2 solenoid valve (21); the No. 3 pipeline (3) is provided with a rotary switch (31); the sand storage tank (4) has three interfaces, wherein the upper interface located on the upper end surface is a sand injection port, a metal grille (46) is built into the upper interface for filtering impurities, the left interface of the sand storage tank (4) is used to connect to the wind source transported by the No. 2 pipeline (2), and the bottom interface of the sand storage tank (4) is used to add sand to the No. 1 pipeline (1) through the No. 2 three-way valve (16); the sand storage tank (4) is also provided with a stirring device (41) and a heating device (42), the stirring device (41) is driven by an external DC motor (43), and the heating device (42); One end of the No. 2 pipeline (2) is connected to the No. 1 three-way valve (14), and the other end is connected to the left interface of the sand storage tank (4); One end of the No. 3 pipeline (3) is connected to the bottom interface of the sand storage tank (4), and the other end is connected to the No. 2 three-way valve (16); The control device (5) is connected to the No. 1 solenoid valve (15), the No. 2 solenoid valve (21) and the DC motor (43) in a wired or wireless manner.

2. The sand adding device for EMU according to claim 1 is characterized in that The mobile tool (6) is a self-powered tricycle, which has a cruising range of no less than 50 km and can be charged at an AC220V voltage.

3. The sand adding device for EMU according to claim 1 is characterized in that A sandbag (7) is also provided at the end of the moving tool (6).

4. The sand adding device for EMU according to claim 1, characterized in that: A filter (12) is also provided on the No. 1 pipeline between the air inlet (11) and the pressure reducing valve (13).

5. The sand adding device for EMU according to claim 1, characterized in that: The No. 1 pipeline at the air inlet (11) is a retractable pipeline.

6. The sand adding device for EMU according to claim 1 is characterized in that The sand outlet (17) is provided with a metal filter (18).

7. The sand adding device for EMU according to claim 1 is characterized in that The sand adding port of the sand storage tank (4) is provided with a proximity sensor (44) which is interlocked with the internal stirring device and the heating device. The lower part of the sand storage tank (4) is provided with a four-way weighing sensor (45) for recording the amount of sand added and carrying an alarm function for insufficient sand addition when the sand in the sandbox exceeds the bottom.

8. The sand adding device for EMU according to any one of claims 1 to 7, characterized in that A rubber protective cover (19) is also provided on the No. 1 pipeline (1) near the sand outlet (17).