Pneumatic portable automatic sand feeding device

Abstract

The utility model discloses a pneumatic type portable automatic sand feeding device, and aims to solve the technical problems that an operator is difficult to feed sand and slow in sand feeding due to the fact that a portable sand feeding device in the prior art cannot automatically feed sand. The device comprises the sand barrel, the pneumatic conveyor, the connector and the pneumatic self-locking quick connector, sand is conveyed through high-speed air flow formed by compressed air in a closed pipeline, the number of components is small, the structure is simple, maintenance and cleaning work are easy to carry out, and fault risks caused by improper maintenance can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of rail transit maintenance equipment, specifically to a pneumatic portable automatic sand-applying device. Background Technology

[0002] When railway locomotives run on long gradients, the adhesion between the wheels and rails decreases due to gravity, causing relative slippage between the wheels and rails, i.e., wheel slippage. To increase the friction between the wheels and rails, prevent wheel slippage, and ensure the safe and stable operation of the train, sand is spread on the rails. Spreading sand increases the coefficient of friction at the wheel-rail contact point, improves adhesion, thereby preventing wheel slippage and sliding, enabling smooth starts, shortening braking distances, and increasing friction for climbing gradients.

[0003] Currently, the sand-spreading methods used on railway locomotives mostly employ large, fixed equipment. This equipment is typically located in locomotive depots or EMU depots, making it unsuitable for use at intermediate and relay stations. While these large devices can automate sand-spreading operations, they are difficult to carry and transport, failing to meet the needs of sand-spreading operations at intermediate and relay stations. Furthermore, existing large equipment also suffers from shortcomings in terms of operational efficiency and labor intensity. In particular, manual sand-spreading requires two people working together to load 10 kg bags of sand into sand boxes from a height of 1.4-1.8 meters, resulting in low efficiency and high labor intensity. Therefore, a small, portable sand-spreading device is proposed.

[0004] However, existing small portable sand-applying equipment is mostly a simple manual sand-applying tool. These devices lack automatic sand-applying capabilities and cannot achieve automated control, still requiring manual operation and failing to effectively improve work efficiency and reduce labor intensity. Therefore, a new type of pneumatic portable automatic sand-applying device is needed to overcome the shortcomings of existing technology and improve the sand-applying efficiency and safety of railway locomotives traveling on long slopes. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic portable automatic sand-applying device to overcome the shortcomings of existing portable sand-applying devices that cannot automatically apply sand, resulting in difficulties and slow sand application for operators.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A portable automatic pneumatic sand-feeding device includes a sand bucket with a pneumatic conveyor fitted onto it. The pneumatic conveyor is equipped with a pneumatic self-locking quick-connect fitting. Power is generated by compressed air to convey the sand. Compared to other conveying methods, this pneumatic sand-feeding method has advantages such as simple structure, convenient operation, and no pollution, and can adapt to different working environments. The sand bucket has a hole on its side, and the pneumatic self-locking quick-connect fitting is positioned corresponding to the hole.

[0008] One end of the sand bucket is fitted with a connector, and the other end is the discharge port; one end of the connector is connected to the sand bucket, and the other end is the feed port. The connector allows the sand to smoothly enter the sand bucket from the feed port, while ensuring the tightness and stability of the connection between the sand bucket and other components, ensuring the smooth progress of the entire sand loading process.

[0009] Furthermore, one end of the pneumatic self-locking quick connector is installed on the pneumatic conveyor corresponding to the hole on the side of the sand bucket, and the other end is a compressed air inlet.

[0010] Furthermore, the compressed air inlet is connected to a compressed air source via a compressed air hose.

[0011] Furthermore, the compressed air source is the locomotive's main ventilation system, with a pressure range of -Kpa. By utilizing the locomotive's existing compressed air resources, no additional air source is required, which reduces the cost and energy consumption of the device and improves its portability and practicality.

[0012] Furthermore, the compressed air hose is a polyurethane hose, which has good flexibility, wear resistance and corrosion resistance, can adapt to different working environments and layout requirements, ensure stable transmission of compressed air, and extend the service life of the hose.

[0013] Furthermore, the connector has a vent on its side to balance the air pressure inside the sand bucket, preventing sand conveying from being obstructed or blocked due to air pressure issues, ensuring the stable operation of the sand feeding device, improving sand feeding efficiency, and ensuring that the sand can be smoothly sucked in and conveyed.

[0014] Furthermore, the discharge port is connected to the sand box opening on the sand box via a sand delivery hose. The discharge port provides a channel for the output of sand, enabling the sand to be accurately delivered to the designated location and realizing the directional transfer of sand.

[0015] Furthermore, a magnet is provided at one end of the sand delivery hose that connects to the sand box opening, which can easily fix the sand delivery hose to the sand box opening without the need for additional clamps or fixing devices. This makes the operation simple and convenient, improves the efficiency of sand delivery, and ensures the stability of the sand delivery hose during operation, preventing the normal operation of sand delivery from being affected by the sand delivery hose falling off.

[0016] Furthermore, the sand delivery hose is a steel wire hose. The steel wire reinforcement layer inside the steel wire hose gives it high pressure resistance and wear resistance, enabling it to withstand the pressure and friction during sand delivery, ensuring smooth sand delivery, reducing the risk of hose damage, and improving the reliability and service life of the equipment.

[0017] Furthermore, the pneumatic self-locking quick connector includes a valve that can close the air path when not in use, preventing compressed air leakage and ensuring energy conservation and operational safety. The pneumatic self-locking quick connector facilitates connection to a compressed air source, enabling rapid installation and disassembly, thus improving the assembly efficiency of the device; the built-in valve effectively prevents compressed air leakage when not in use, saving energy and ensuring operational safety.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This invention provides a pneumatic, portable, automatic sand-feeding device that uses high-speed airflow generated by compressed air in a closed pipe to transport sand, completing the sand-feeding operation quickly and efficiently. This invention features a compact structure, small size, and light weight, making it easy to carry and transport. These characteristics make it suitable for rapid deployment and use in space-constrained environments such as railway locomotive depots and intermediate stations. It can also be used under various climate and environmental conditions, meeting sand-feeding needs in diverse environments. Since the entire material transport process takes place within a closed system, dust spillage is effectively reduced. Furthermore, this invention uses simple, small-diameter pipes to transport compressed air, and the pipes can be bent to fit around existing equipment, offering greater layout flexibility. Moreover, the invention has fewer components and a simpler structure, making maintenance and cleaning easier and reducing the risk of malfunctions due to improper maintenance.

[0020] Furthermore, this invention utilizes compressed air as a power source, forming negative pressure through high-speed airflow to draw in and transport sand. The compressed air source is the main ventilation system on the railway locomotive, eliminating the need for additional air source equipment. This reduces additional energy requirements and further improves the portability and practicality of this invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a pneumatic portable automatic sanding device according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the connection of a pneumatic portable automatic sanding device in an embodiment of this utility model.

[0023] In the diagram, 1 is a pneumatic conveyor, 2 is a pneumatic self-locking quick connector, 3 is a connector, 4 is a breather, 5 is a feed inlet, 6 is a compressed air inlet, 7 is a discharge outlet, 8 is a sand bucket, 9 is a sand delivery hose, 10 is a magnet, 11 is a sand box opening, 12 is a sand box, 13 is a compressed air hose, and 14 is a compressed air source. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0028] Example:

[0029] like Figure 1 and Figure 2The illustration shows a pneumatic portable automatic sand feeding device according to an embodiment of the present invention. It includes a sand bucket 8, on which a pneumatic conveyor 1 is fitted. The pneumatic conveyor 1 is equipped with a pneumatic self-locking quick connector 2. Power is generated by compressed air to transport the sand. Compared to other conveying methods, pneumatic sand transport has advantages such as simple structure, convenient operation, and no pollution, and can adapt to different working environments. The sand bucket 8 has a hole on its side, and the pneumatic self-locking quick connector 2 is positioned corresponding to the hole. The preferred model of the pneumatic conveyor 1 is WL-ST38B, and the preferred model of the pneumatic self-locking quick connector 2 is 30SF+30PF.

[0030] One end of the sand bucket 8 is fitted with a connector 3, and the other end is a discharge port 7; one end of the connector 3 is connected to the sand bucket 8, and the other end is a feed port 5. The connector 3 allows the sand to smoothly enter the sand bucket 8 from the feed port 5, while ensuring the tightness and stability of the connection between the sand bucket 8 and other components, ensuring the smooth progress of the entire sand feeding process.

[0031] Preferably, in this embodiment, one end of the pneumatic self-locking quick connector 2 is installed on the pneumatic conveyor 1 through the hole on the side of the sand bucket 8, and the other end is the compressed air inlet 6.

[0032] Preferably, in this embodiment, the compressed air inlet 6 is connected to the compressed air source 14 via a compressed air hose 13.

[0033] Preferably, in this embodiment, the compressed air source 14 is the locomotive's main air system, with a pressure range of 700-950 kPa. By utilizing the locomotive's existing compressed air resources, no additional air source is required, which reduces the cost of the device and energy consumption, and improves the portability and practicality of the device.

[0034] Preferably, the compressed air hose 13 in this embodiment is a polyurethane hose. Polyurethane hoses have good flexibility, wear resistance and corrosion resistance, and can adapt to different working environments and layout requirements, ensuring stable transmission of compressed air and extending the service life of the hose.

[0035] Preferably, in this embodiment, the connector 3 has a vent 4 on its side to balance the air pressure inside the sand bucket, avoid sand conveying problems or blockages caused by air pressure issues, ensure the stable operation of the sand feeding device, improve sand feeding efficiency, and ensure that the sand can be smoothly sucked in and transported.

[0036] Preferably, in this embodiment, the discharge port 7 is connected to the sand box opening 11 on the sand box 12 via a sand delivery hose 9. The discharge port 7 provides a channel for the output of sand, enabling the sand to be accurately delivered to the designated location and realizing the directional transfer of sand.

[0037] Preferably, in this embodiment, a magnet 10 is arranged at one end of the sand delivery hose 9 that is connected to the sand box opening 11, which can easily fix the sand delivery hose 9 to the sand box opening 11 without the need for additional clamps or fixing devices. The operation is simple and convenient, which improves the efficiency of sand delivery operation, while ensuring the stability of the sand delivery hose 9 during the working process and preventing the normal operation of sand delivery work from being affected by the sand delivery hose 9 falling off.

[0038] Preferably, in this embodiment, the sand delivery hose 9 is a steel wire hose, with a preferred size of φ38mm and a length of 2.5m. The steel wire reinforcement layer inside the steel wire hose gives it high pressure resistance and wear resistance, enabling it to withstand the pressure and friction during sand delivery, ensuring smooth sand delivery, reducing the risk of hose damage, and improving the reliability and service life of the equipment.

[0039] Preferably, the pneumatic self-locking quick connector 2 in this embodiment is equipped with a valve, which can close the air path when not in use to prevent compressed air leakage, thus ensuring energy conservation and operational safety. The pneumatic self-locking quick connector 2 is convenient to connect to the compressed air source 14, enabling quick installation and disassembly and improving the assembly efficiency of the device; the built-in valve can close the air path when not in use, effectively preventing compressed air leakage, thus saving energy and ensuring operational safety.

[0040] Before use, first confirm that the compressed air pressure provided by the locomotive's main ventilation system is within the safe operating range of 700 kPa to 950 kPa. Then check whether key components such as the pneumatic conveyor 1, pneumatic self-locking quick connector 2, compressed air hose 13, and sand delivery hose 9 are intact and whether the connections are secure.

[0041] After verifying that everything is correct, install the pneumatic portable automatic sand feeding device. Connect the pneumatic conveyor 1 to the sand bucket 8, ensuring that the position of the pneumatic self-locking quick connector 2 aligns with the hole on the side of the sand bucket 8. Connect the connector 3 to one end of the sand bucket 8, ensuring that the feed inlet 5 at the other end is unobstructed from the sand source. Connect the discharge port 7 to the sand box opening 11 on the sand box 12 via the sand feeding hose 9, ensuring that the magnet 10 at one end of the sand feeding hose 9 is securely fixed to the sand box opening 11.

[0042] Connect the pneumatic portable automatic sanding device to the compressed air source 14, and connect the compressed air inlet 6 of the pneumatic self-locking quick connector 2 to the locomotive's main air system as the compressed air source 14 through the compressed air hose 13.

[0043] Begin sand conveying. Open the valve on the pneumatic self-locking quick connector 2 of the pneumatic conveyor 1 to allow compressed air to flow into the pneumatic conveyor 1. The compressed air forms a high-speed airflow within the pneumatic conveyor 1 and creates a negative pressure zone within the pneumatic conveyor 1. The sand from the feed inlet 5 and the air entering from the breather hole 4 are drawn into the pneumatic conveyor 1 and, along with the high-speed airflow, enter the sand box 12, which is 1.4 meters to 1.8 meters high.

[0044] Monitor the entire conveying process during use to ensure that the sand enters the sand box 12 smoothly without leakage or blockage. If necessary, adjust the valves at the inlet 5 and outlet 7 to control the flow rate and speed of the sand.

[0045] After completing the sand application, close the valve of the pneumatic self-locking quick connector 2 on the pneumatic conveyor 1 to cut off the compressed air supply. Disconnect the compressed air hose 13 from the pneumatic self-locking quick connector 2.

[0046] Finally, clean the pneumatic conveyor 1 and sand bucket 8 of any remaining sand to prevent blockage. Inspect all components for wear and tear, and perform necessary maintenance or replacement. Afterward, properly store all components of the device and transfer them to the next work site or store them away.

[0047] The total weight of all components of this sand-spraying device does not exceed 10 kg, making it easy to carry and transport. It also eliminates the need for a ventilation source, boasts a high degree of automation, and is simple and convenient to operate, thus improving practical difficulties on site.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pneumatic portable automatic sand-applying device, characterized in that, Includes a sand bucket (8), on which a pneumatic conveyor (1) is fitted, and on which a pneumatic self-locking quick connector (2) is provided, and a hole is opened on the side of the sand bucket (8), and the position of the pneumatic self-locking quick connector (2) corresponds to the hole; One end of the sand bucket (8) is fitted with a connector (3), and the other end is a discharge port (7); one end of the connector (3) is connected to the sand bucket (8), and the other end is a feed port (5).

2. The pneumatic portable automatic sanding device according to claim 1, characterized in that, One end of the pneumatic self-locking quick connector (2) is installed on the pneumatic conveyor (1) corresponding to the hole on the side of the sand bucket (8), and the other end is the compressed air inlet (6).

3. A pneumatic portable automatic sanding device according to claim 2, characterized in that, The compressed air inlet (6) is connected to the compressed air source (14) via a compressed air hose (13).

4. A pneumatic portable automatic sanding device according to claim 3, characterized in that, The compressed air source (14) is the locomotive's main ventilation system.

5. A pneumatic portable automatic sanding device according to claim 3, characterized in that, The compressed air hose (13) is a polyurethane hose.

6. A pneumatic portable automatic sanding device according to claim 1, characterized in that, The connector (3) has a vent hole (4) on its side.

7. A pneumatic portable automatic sanding device according to claim 1, characterized in that, The discharge port (7) is connected to the sand box opening (11) on the sand box (12) via the sand delivery hose (9).

8. A pneumatic portable automatic sanding device according to claim 7, characterized in that, A magnet (10) is arranged at one end of the sand delivery hose (9) that is connected to the sand box opening (11).

9. A pneumatic portable automatic sanding device according to claim 7, characterized in that, The sand delivery hose (9) is a steel wire hose.

10. A pneumatic portable automatic sanding device according to claim 1, characterized in that, The pneumatic self-locking quick connector (2) is equipped with a valve.

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