Water feeding device for rail engineering vehicle

Abstract

The utility model discloses a water feeding device for a rail public service vehicle. The water feeding device comprises an under-vehicle water tank installed at the bottom of a carriage and an on-vehicle water tank installed in the carriage. The under-vehicle water tank is connected with the on-vehicle water tank through a water conveying pipeline. When the water level in the on-vehicle water tank is equal to or lower than the preset lower water level, the automatic water supplementing mechanism can convey water in the under-vehicle water tank to the on-vehicle water tank. And when the water level in the on-vehicle water tank is equal to or higher than the preset upper water level, the automatic water replenishing mechanism stops conveying the water in the under-vehicle water tank to the on-vehicle water tank. On the basis of an existing water storage system of the 25-type passenger car, the under-car water tank and the automatic water replenishing mechanism are additionally arranged, and when the water level in the on-car water tank is lower than the preset low water level, water in the under-car water tank can be automatically pumped for water replenishing. Meanwhile, when the water level in the water tank on the vehicle is higher than the preset high water level, water replenishing is automatically stopped, and automation of the water replenishing process is achieved.

Description

Technical Field

[0001] The utility model relates to a water supply device for a track maintenance vehicle. Background Art

[0002] The Railway Administration's railway maintenance coaches are specialized vehicles used by railway maintenance staff for field construction, office work, and accommodation. The existing standard 25-type coaches have only one water tank, which is insufficient to meet the needs of long-term field operations. The water tank is located inside the coach, and increasing its size would encroach on other storage space.

[0003] Prior art Chinese patent CN201910874420.5 discloses an intelligent water supply system under a train, in which a box is fixed to the bottom of the train body, an automatic constant pressure water supply unit and a water injection pipeline are both connected to the box, a heating tape is wound around the water injection pipeline and heats the water injection pipeline, and an electric heating pipe is arranged in the inner cavity of the box and heats the water in the box; the present invention is arranged at the bottom of the train body and does not occupy space on the train.

[0004] Yet for the work bus of field operation, only the water tank of vehicle body bottom is set and is difficult to satisfy long-term field life.If the water tank is set under the vehicle, it will cause some inconvenience in use. Utility Model Content

[0005] In view of this, the utility model provides a water supply device for a rail maintenance vehicle, which increases the water storage capacity without occupying space in the vehicle compartment.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to adopt a water supply device for rail maintenance vehicles, including an under-vehicle water tank installed at the bottom of the car and an on-vehicle water tank installed in the car; the under-vehicle water tank is connected to the on-vehicle water tank by a water supply pipe; it also includes an automatic water replenishing mechanism, when the water level in the on-vehicle water tank is equal to or lower than a preset lower water level, the automatic water replenishing mechanism can transfer the water in the under-vehicle water tank to the on-vehicle water tank; and when the water level in the on-vehicle water tank is equal to or higher than a preset upper water level, the automatic water replenishing mechanism stops transferring the water in the under-vehicle water tank to the on-vehicle water tank.

[0007] As an improvement, the automatic water replenishment mechanism includes a water tank water level monitoring sensor arranged in the vehicle water tank, an electromagnetic valve arranged on the water supply pipeline, and a water pump arranged on the water supply pipeline; it also includes an intermediate relay. When the water tank water level monitoring sensor detects that the water level on the vehicle water tank is equal to or lower than a preset lower water level, it can send a low water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to open and replenish water to the vehicle water tank; when the water tank water level monitoring sensor detects that the water level on the vehicle water tank is equal to or higher than a preset upper water level, it can send a high water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to close and stop replenishing water to the vehicle water tank.

[0008] As a further improvement, the water tank water level monitoring sensor includes a guide rod vertically arranged in the water tank on the vehicle, and a float that can move along the guide rod is passed through the guide rod, and the float can float on the liquid surface; an upper contact and a lower contact are respectively provided on the guide rod at the preset upper water level and the preset lower water level height, so that when the float contacts the upper contact and the lower contact, a high water level signal and a low water level signal can be sent to the intermediate relay.

[0009] As another further improvement, the water tank is provided with a transparent window located on the guide rod and marked with scales.

[0010] As an improvement, external relays are provided between the intermediate relay and the water pump, and between the intermediate relay and the electromagnetic water valve.

[0011] As an improvement, the water pump is provided with a water pump control contactor for receiving a control signal from an external relay and controlling the opening and closing of the water pump.

[0012] The utility model is beneficial in that:

[0013] This new system builds upon the existing water storage system of the Type 25 passenger car by adding an undercarriage water tank and an automatic water replenishment mechanism. When the water level in the onboard water tank falls below a preset low level, water is automatically drawn from the undercarriage water tank for replenishment. Furthermore, when the water level in the onboard water tank rises above a preset high level, water replenishment automatically stops, thus automating the replenishment process. Positioning the new water tank at the bottom of the carriage eliminates the need for space inside, facilitating layout. Furthermore, replenishing the water from the undercarriage water tank to the onboard water tank does not alter existing water usage patterns, further enhancing user convenience.

[0014] The water tank water level monitoring sensor in the utility model is also modified based on the existing PM-1 type 4-segment water level display of the 25 type passenger car. While realizing high and low water level detection, it retains its original water level display function, thereby greatly reducing the modification cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 This is a structural diagram of the water tank water level monitoring sensor.

[0017] Figure 3 This is the circuit diagram of the automatic water replenishment mechanism.

[0018] Markings in the figure: 1 carriage, 2 water tank on the car, 3 water tank under the car, 4 float, 5 upper contact, 6 lower contact, 7 transparent window, 8 guide rod. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0020] like Figure 1 As shown, the utility model provides a water supply device for a rail maintenance vehicle, comprising an under-vehicle water tank 3 installed at the bottom of a carriage 1 and an on-vehicle water tank 2 installed in the carriage; the under-vehicle water tank 3 is connected to the on-vehicle water tank 2 by a water supply pipe; and further comprises an automatic water replenishing mechanism, which can transfer water from the under-vehicle water tank 3 to the on-vehicle water tank 2 when the water level in the on-vehicle water tank 2 is equal to or lower than a preset lower water level; and when the water level in the on-vehicle water tank 2 is equal to or higher than a preset upper water level, the automatic water replenishing mechanism stops transferring water from the under-vehicle water tank 3 to the on-vehicle water tank 2.

[0021] Based on the existing water storage system of the 25-type passenger car, the utility model adds an undercarriage water tank 3 and an automatic water replenishment mechanism. When the water level in the onboard water tank 2 falls below a preset low water level, water in the undercarriage water tank 3 can be automatically pumped out for water replenishment. At the same time, when the water level in the onboard water tank 2 rises above a preset high water level, water replenishment automatically stops, thus realizing the automation of the water replenishment process.

[0022] like Figure 3 As shown, specifically, the automatic water replenishment mechanism in this embodiment includes a water tank water level monitoring sensor arranged in the on-board water tank 2, an electromagnetic valve arranged on the water supply pipeline, and a water pump arranged on the water supply pipeline; it also includes an intermediate relay. When the water tank water level monitoring sensor detects that the water level on the on-board water tank is equal to or lower than the preset lower water level, it can send a low water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to open and replenish water for the on-board water tank; when the water tank water level monitoring sensor detects that the water level on the on-board water tank is equal to or higher than the preset upper water level, it can send a high water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to close and stop replenishing water for the on-board water tank.

[0023] The water tank digital level detection sensor can sense the liquid level by installing two water level sensors at the preset upper water level and the preset lower water level in the water tank. Of course, other forms are also possible, such as Figure 2 As shown, for example, the water tank water level monitoring sensor in this embodiment includes a guide rod 8 vertically arranged in the water tank 2 on the vehicle, and a float 4 that can move along the guide rod is passed through the guide rod 8, and the float 4 can float on the liquid surface; the guide rod 8 is provided with an upper contact 5 and a lower contact 6 at the preset upper water level and the preset lower water level height, respectively, so that when the float 4 contacts the upper contact 5 and the lower contact 6, it can send a high water level signal and a low water level signal to the intermediate relay.

[0024] In fact, the above-mentioned water tank water level monitoring sensor is also modified based on the existing PM-1 type 4-segment water level display of the Type 25 passenger car. While realizing high and low water level detection, it retains its original water level display function, thereby greatly reducing the modification cost.

[0025] It is foreseeable that in order to retain the water level display function, the on-vehicle water tank 2 is provided with a transparent window 7 located at the guide rod 8 and marked with a scale.

[0026] In addition, in this embodiment, external relays are provided between the intermediate relay and the water pump, and between the intermediate relay and the electromagnetic water valve. The reason for providing two-stage relays in this embodiment is that the intermediate relay can amplify the low-power signal from the sensor to control an external higher-power load (such as a water pump). However, directly connecting the load may impose a large load on the sensor, which is not conducive to stable system operation. Therefore, the intermediate relay provides effective isolation between the logic control and load parts, protecting the control signal circuit from power fluctuations or current surges. This plays a significant role in preventing damage to the sensor and other electronic components.

[0027] In this embodiment, the water pump is equipped with a water pump control contactor that receives control signals from an external relay and controls the pump's on / off state. The water pump control contactor is an electrical device used to control the start and stop of the water pump's motor. Its primary function is to control the high-power water pump's on / off state via electrical signals, ensuring the proper operation of the water supply system.

[0028] When the control circuit issues a start command, the electromagnetic coil of the water pump control contactor is energized, generating a magnetic field, closing the main contacts, thereby providing power to the water pump's motor and starting the water pump.

[0029] When the control signal changes to stop, the electromagnetic coil loses power, the magnetic field disappears, the main contacts are disconnected, the power supply is cut off, and the water pump stops working.

[0030] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications shall also be considered within the scope of protection of the present invention.

Claims

1. A water supply device for a railway maintenance vehicle, characterized in that: The water tank comprises an undercarriage water tank installed at the bottom of the vehicle compartment and an onboard water tank installed in the vehicle compartment; the undercarriage water tank is connected to the onboard water tank via a water pipe; and an automatic water replenishing mechanism is further provided. When the water level in the onboard water tank is equal to or lower than a preset lower water level, the automatic water replenishing mechanism can transfer water from the undercarriage water tank to the onboard water tank; and when the water level in the onboard water tank is equal to or higher than a preset upper water level, the automatic water replenishing mechanism stops transferring water from the undercarriage water tank to the onboard water tank; The automatic water replenishment mechanism includes a water tank water level monitoring sensor arranged in the vehicle water tank, an electromagnetic valve arranged on the water supply pipeline, and a water pump arranged on the water supply pipeline; and also includes an intermediate relay. When the water tank water level monitoring sensor detects that the water level on the vehicle water tank is equal to or lower than a preset lower water level, it can send a low water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to open and replenish water to the vehicle water tank; when the water tank water level monitoring sensor detects that the water level on the vehicle water tank is equal to or higher than a preset upper water level, it can send a high water level signal to the intermediate relay, so that the intermediate relay controls the electromagnetic water valve and the water pump to close and stop replenishing water to the vehicle water tank.

2. A water supply device for a railway maintenance vehicle according to claim 1, characterized in that: The water tank water level monitoring sensor includes a guide rod vertically arranged in the water tank on the vehicle, and a float that can move along the guide rod is passed through the guide rod, and the float can float on the liquid surface; an upper contact and a lower contact are respectively provided on the guide rod at the preset upper water level and the preset lower water level height, so that when the float contacts the upper contact and the lower contact, a high water level signal and a low water level signal can be sent to the intermediate relay.

3. The water supply device for a railway maintenance vehicle according to claim 1, characterized in that: The on-vehicle water tank is provided with a transparent window located at the guide rod and is marked with scales.

4. The water supply device for a railway maintenance vehicle according to claim 1, characterized in that: External relays are provided between the intermediate relay and the water pump, and between the intermediate relay and the electromagnetic water valve.

5. The water supply device for a railway maintenance vehicle according to claim 4, characterized in that: The water pump is provided with a water pump control contactor for receiving a control signal from an external relay and controlling the opening and closing of the water pump.

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