Urban rail transit overhead line system anti-icing coating automatic spraying device

Abstract

The invention discloses an automatic spraying device for an anti-icing coating of an urban rail transit contact network, which belongs to the technical field of rail devices and comprises a coating circulating box mounted on a rail maintenance vehicle, and a multi-degree-of-freedom control arm for controlling a spraying angle is arranged on the coating circulating box. The multi-degree-of-freedom control arm is provided with a telescopic connecting arm for controlling length adjustment, the telescopic connecting arm is connected with a connecting arm plate through an angle torsion part, and the connecting arm plate is provided with a spraying tail end part and a collecting tail end part. According to the invention, the coating circulating box body is mounted on the track maintenance vehicle, and coordinated actions of the multi-degree-of-freedom control arm, the telescopic connecting arm and the angle torsion piece are matched, so that automatic positioning and posture adjustment of the spraying device are realized, manual climbing operation is not needed in the whole spraying process, a traditional high-altitude operation mode of manually holding a spray gun by hand is thoroughly replaced, and the working efficiency is improved. And the safety risk of high-altitude falling is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of track equipment technology, and in particular to an automatic spraying device for anti-icing coating of urban rail transit contact network. Background Technology

[0002] As the backbone of urban public transportation, the operational safety and efficiency of urban rail transit are of paramount importance. The overhead contact line is the core facility for electric trains to draw power from the pantograph. In harsh weather conditions such as low temperatures, freezing rain, and high humidity during winter, the overhead contact line on open sections is highly susceptible to icing. Icing on the overhead contact line can lead to poor current collection by the pantograph, arcing, and in severe cases, tearing of the pantograph's carbon contact plate or even train shutdown, posing significant safety hazards and maintenance costs to rail transit operations.

[0003] Currently, the main way to solve the problem of icing on overhead contact lines in the industry is to first scrape off the ice, and then spray anti-icing materials to delay re-icing. Existing anti-icing spraying operations are mostly carried out manually, with workers using handheld simple sprayers or air-pressure spray guns and climbing to work, which has the following technical drawbacks: 1. Low work efficiency and high dependence on manual labor: Traditional manual spraying methods rely on workers to hold spray guns and work at height. The operation is arduous and slow. It is difficult to complete long-section and large-area spraying tasks within the limited "window period". Moreover, working at height poses significant safety risks.

[0004] 2. Poor spraying accuracy and serious material waste: Manual spraying lacks precise positioning and flow control, and the distance between the nozzle and the contact wire is difficult to keep constant. Problems such as overspraying, missed spraying, or uneven spraying are prone to occur, which not only affect the anti-icing effect, but also cause a lot of waste of anti-icing materials.

[0005] 3. Lack of waste material recycling function and poor environmental protection: The existing spraying equipment is a one-way conveying structure. During the spraying process, the excess liquid that does not adhere to the surface of the contact wire drips directly, which not only causes material loss, but also pollutes the track bed and the surrounding environment, which does not meet the requirements of green operation and maintenance.

[0006] 4. Insufficient adaptability and inability to cope with complex environments: The overhead contact line of urban rail transit has complex routes, including straight lines, curves, and bends. Existing fixed or simple spraying equipment is difficult to flexibly adjust the spraying angle and distance, and cannot meet the needs of refined operation under different line conditions.

[0007] To address the aforementioned issues, there is an urgent need to develop an automated spraying device for anti-icing coatings on overhead contact lines that is highly automated, precise in spraying, has a waste material recovery function, and is highly adaptable, in order to improve the efficiency and quality of spraying operations and reduce operation and maintenance costs and safety risks. Summary of the Invention

[0008] The purpose of this invention is to solve the problems existing in the prior art, and to propose an automatic spraying device for anti-icing coating of urban rail transit contact network.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An automatic spraying device for anti-icing coating on urban rail transit contact networks includes a coating circulation tank installed on a rail maintenance vehicle. The coating circulation tank is equipped with a multi-degree-of-freedom control arm for controlling the spraying angle. The multi-degree-of-freedom control arm is equipped with a telescopic connecting arm for controlling length adjustment. The telescopic connecting arm is connected to a connecting arm plate via an angle torsion member. The connecting arm plate is respectively equipped with a spraying end component and a collecting end component. The spraying end component is used to spray the anti-icing coating, and the collecting end component absorbs and recycles the sprayed anti-icing coating through negative pressure adsorption. The paint circulation tank is provided with a storage chamber inside, and a high-pressure delivery pump is provided inside the storage chamber. The high-pressure delivery pump is connected to the spraying end piece through a delivery pipe. A material collection and filtration chamber is provided on one side of the storage chamber, and a negative pressure pump is provided on one side of the material collection and filtration chamber. The negative pressure pump is connected to the collection end piece through a suction pipe.

[0010] As a preferred embodiment, the spraying end component includes an offset translation seat disposed at one end of the connecting arm plate, a plurality of spraying hoods are disposed on the offset translation seat, a plurality of arc-shaped spraying nozzles are disposed inside the spraying hoods, the conveying pipe is connected to the plurality of spraying nozzles through a flow control valve, and the spraying pressure of the plurality of spraying nozzles gradually decreases with the direction of track movement.

[0011] As a preferred embodiment, the offset translation seat includes a fixed seat connected to the connecting arm plate and a slide rail translation seat connected to the spray hood. The fixed seat has a slide groove, and the slide rail translation seat has a sliding block located in the slide groove on its back. A built-in push cylinder for controlling the movement of the sliding block is provided in the slide groove.

[0012] As a preferred embodiment, the collection end component includes a collection seat disposed at the other end of the connecting arm plate. The collection seat is connected to the suction pipe. A plurality of collection hoods corresponding to the spray nozzles are disposed on one side of the collection seat. An adsorption air port communicating with the collection seat is opened on one side of the collection hood for absorbing the paint.

[0013] As a preferred embodiment, the telescopic end of the telescopic connecting arm is connected to a bearing pressure plate, and the angle torsion component includes a torsion motor disposed on the back of the bearing pressure plate. The output end of the torsion motor extends outward through the bearing pressure plate and is fixedly connected to the connecting arm plate for driving the connecting arm plate to rotate.

[0014] As a preferred embodiment, both ends of the connecting arm plate are equipped with load-bearing telescopic cylinders. The output ends of the load-bearing telescopic cylinders at both ends are connected to the offset translation seat and the collection seat, respectively, and are used to independently control the telescopic distance of the offset translation seat and the collection seat to meet the complex environment in urban rail transit.

[0015] As a preferred embodiment, both the conveying pipe and the suction pipe are metal braided pressure-resistant pipes.

[0016] As a preferred embodiment, the material collection and filtration chamber is provided with multiple layers of filter screens, which are detachable for easy replacement later.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves automatic positioning and attitude adjustment of the spraying device by installing the paint circulation tank on a track maintenance vehicle and coordinating the actions of a multi-degree-of-freedom control arm, a telescopic connecting arm, and an angle torsion component. Specifically, the multi-degree-of-freedom control arm provides coarse spatial positioning, the telescopic connecting arm enables coarse distance adjustment, the torsion motor drives the connecting arm plate to rotate to adapt to different route directions, and the load-bearing telescopic cylinders at both ends independently adjust the extension length of the spraying end component and the collecting end component. The combined effect of these structures eliminates the need for manual operation at height during the entire spraying process, completely replacing the traditional manual high-altitude operation mode of holding a spray gun, and effectively reducing the safety risk of falls from heights.

[0018] 2. This invention features an offset translation seat and multiple arc-shaped spray nozzles at the end of the spraying process. The offset translation seat is driven laterally by a built-in push cylinder, allowing the spray nozzles to precisely align with the center of the contact line and ensuring complete coverage of the contact line. The multiple spray nozzles are arranged in an arc shape to match the circular cross-section of the contact line, achieving uniform, fully enclosed spraying. The spraying pressure of the multiple nozzles is set to gradually decrease along the track movement direction. This design effectively avoids interference from the high-speed airflow generated by the front nozzles on the spraying trajectory of the rear nozzles, reducing paint splashing and dispersion, and improving paint adhesion.

[0019] 3. This invention simultaneously sets up a spraying end component and a collection end component on the connecting arm plate. The two work together to achieve synchronous operation of spraying and recycling. The collection end component includes a collection hood that corresponds to each spraying nozzle. After the negative pressure pump is started, a negative pressure area is formed at the opening of the collection hood, which immediately sucks in the excess paint that has not adhered to the surface of the contact line during the spraying process. It is then transported to the collection and filtration chamber through the suction pipe. After being filtered and purified by multiple layers of filter screens, the excess paint flows back to the storage chamber, realizing the recycling of paint. This design completely changes the existing technology of unidirectional conveying and direct dripping of excess material. It not only greatly improves the material utilization rate and reduces the cost of operation and maintenance consumables, but also avoids the pollution of the track bed and the surrounding environment by paint dripping, which meets the requirements of green and low-carbon operation and maintenance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an automatic spraying device for anti-icing coating of urban rail transit contact network proposed in this invention; Figure 2 This is a schematic diagram of the control arm portion of an automatic spraying device for anti-icing coating of urban rail transit contact network proposed in this invention. Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the spraying end component in an automatic spraying device for anti-icing coating of urban rail transit contact network proposed in this invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the paint circulation box in an automatic spraying device for anti-icing coating of urban rail transit contact network proposed in this invention; Figure 6 This is a schematic diagram of the structure of the collection end component in an automatic spraying device for anti-icing coating of urban rail transit contact network proposed in this invention.

[0021] In the diagram: 1. Paint circulation tank; 2. Multi-degree-of-freedom control arm; 3. Telescopic connecting arm; 4. Connecting arm plate; 5. Material storage chamber; 6. High-pressure conveying pump; 7. Material collection and filtration chamber; 8. Negative pressure pump; 9. Offset translation seat; 901. Fixed seat; 902. Slide rail translation seat; 903. Sliding block; 904. Built-in push cylinder; 10. Spraying hood; 11. Spraying nozzle; 12. Collection seat; 13. Collection hood; 14. Adsorption air port; 15. Bearing pressure plate; 16. Torsion motor; 17. Bearing telescopic cylinder; 18. Filter screen. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly 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 invention based on the specific circumstances.

[0025] Example, refer to Figures 1 to 6 An automatic spraying device for anti-icing coating of urban rail transit contact network includes a coating circulation box 1 installed on a rail maintenance vehicle. The coating circulation box 1 is equipped with a multi-degree-of-freedom control arm 2 for controlling the spraying angle. The multi-degree-of-freedom control arm 2 is equipped with a telescopic connecting arm 3 for controlling the length adjustment. The telescopic connecting arm 3 is connected to a connecting arm plate 4 through an angle torsion member. Furthermore, the telescopic end of the telescopic connecting arm 3 is connected to a bearing pressure plate 15, and the angle torsion component includes a torsion motor 16 disposed on the back of the bearing pressure plate 15. The output end of the torsion motor 16 extends outward through the bearing pressure plate 15 and is fixedly connected to the connecting arm plate 4 for driving the connecting arm plate 4 to rotate.

[0026] With the above settings, the torsion motor 16 can drive the connecting arm plate 4 to achieve rotational adjustment, so that the spraying end part and the collection end part can flexibly adapt to the contact network lines with different directions, and meet the operation requirements of complex working conditions such as curved sections and bends. The connecting arm plate 4 is respectively equipped with a spraying end component and a collecting end component. The spraying end component is used to spray anti-icing coating. Further, the spraying end component includes an offset translation seat 9 set at one end of the connecting arm plate 4. Multiple spraying covers 10 are set on the offset translation seat 9. Multiple arc-shaped spraying nozzles 11 are set inside the spraying covers 10. The conveying pipe is connected to the multiple spraying nozzles 11 through a flow control valve. The spraying pressure of the multiple spraying nozzles 11 gradually decreases with the direction of track movement.

[0027] With the above configuration, the arc-shaped spray nozzle 11 can achieve wrap-around spraying of the contact cable, and the gradually decreasing spraying pressure design can effectively avoid paint splashing caused by airflow disturbance and improve paint adhesion rate.

[0028] Furthermore, the offset translation seat 9 includes a fixed seat 901 connected to the connecting arm plate 4 and a slide rail translation seat 902 connected to the spray cover 10. The fixed seat 901 has a slide groove, and the slide rail translation seat 902 has a sliding block 903 located in the slide groove on its back. The slide groove has a built-in push cylinder 904 for controlling the movement of the sliding block 903.

[0029] Among them, the offset translation seat 9 can be adjusted laterally according to the wind speed in the environment where the contact wire is located and the speed of the track maintenance vehicle during the operation, so as to ensure that the paint sprayed by the spray nozzle 11 can be collected into the collection hood 13 regardless of the speed. That is, the horizontal distance between the spray nozzle 11 and the collection hood 13 is changed, so as to ensure the collection effect under different vehicle speeds.

[0030] The collection terminal unit absorbs and recycles the sprayed anti-icing coating through negative pressure adsorption. The collection terminal unit includes a collection seat 12 located at the other end of the connecting arm plate 4. The collection seat 12 is connected to the suction pipe. Multiple collection hoods 13 corresponding to the spray nozzles are provided on one side of the collection seat 12. An adsorption port 14 connected to the collection seat 12 is opened on one side of the collection hood 13 for absorbing the coating. The collection hoods 13 are arranged one-to-one with the spray nozzles 11, which can recover the excess liquid that has not adhered to the coating through negative pressure adsorption during the spraying operation, realizing the simultaneous operation of spraying and recycling. Furthermore, both ends of the connecting arm plate 4 are equipped with load-bearing telescopic cylinders 17. The output ends of the load-bearing telescopic cylinders 17 at both ends are connected to the offset translation seat 9 and the collection seat 12 respectively, and are used to independently control the telescopic distance of the offset translation seat 9 and the collection seat 12. The spraying end part and the collection end part can independently adjust their extension length without interfering with each other, further improving the device's adaptability to complex circuit environments.

[0031] The paint circulation tank 1 has a storage chamber 5 inside, and a high-pressure delivery pump 6 is installed inside the storage chamber 5. The high-pressure delivery pump 6 is connected to the spraying terminal component through a delivery pipeline. A material collection and filtration chamber 7 is set on one side of the storage chamber 5, and a negative pressure pump 8 is set on the other side of the material collection and filtration chamber 7. The negative pressure pump 8 is connected to the collection terminal component through a suction pipeline. The material collection and filtration chamber 7 is equipped with multiple layers of filter screens 18, which are removable for easy replacement later.

[0032] Furthermore, both the conveying pipeline and the suction pipeline are made of metal braided pressure-resistant pipes, which can ensure that the pipelines maintain good sealing and pressure resistance during frequent bending and movement, thus ensuring the stability of paint conveying and recycling.

[0033] This invention involves fixing the paint circulation tank 1 onto a rail maintenance vehicle and adding sufficient anti-icing paint to the storage chamber 5. The operator sets process parameters such as spraying pressure and flow rate via a control terminal, and the rail maintenance vehicle travels to the section to be sprayed. The multi-degree-of-freedom control arm 2 moves, bringing the telescopic connecting arm 3 and connecting arm plate 4 near the contact line. The telescopic connecting arm 3 extends, pushing the bearing pressure plate 15 and connecting arm plate 4 to a preset working distance. The torsion motor 16 drives the connecting arm plate 4 to rotate to an appropriate angle according to the route (straight or curved), aligning the spraying end piece and the collecting end piece with the contact line direction.

[0034] The load-bearing telescopic cylinders 17 at both ends extend independently, pushing the offset translation seat 9 and the collection seat 12 to the working position that maintains a constant distance from the contact line; the built-in push cylinder 904 drives the slide rail translation seat 902 to move laterally, so that the arc-shaped spray nozzle 11 is precisely aligned with the center of the contact line, ensuring that the spray coverage area completely covers the contact line. The high-pressure delivery pump 6 is started, and the anti-icing coating in the storage chamber 5 is delivered to each spray nozzle 11 through the delivery pipeline. Multiple spray nozzles 11 spray the coating onto the contact line with gradually decreasing pressure along the track movement direction to achieve uniform and full coverage.

[0035] Simultaneously, the negative pressure pump 8 starts, creating a negative pressure zone at the opening of the collection hood 13. This zone immediately sucks in any excess paint that has not adhered during the spraying process, which is then transported through the collection seat 12 and the suction pipe to the collection and filtration chamber 7. After being filtered and purified by the filter screen 18, the excess paint flows back to the storage chamber 5, achieving paint recycling.

[0036] The track maintenance vehicle moves at a constant speed along the track, and the above-mentioned spraying and recycling processes continue, realizing automated and continuous spraying operations on long sections of the overhead contact line. Operators can adjust the spraying pressure, flow rate, and device posture in real time through the control terminal according to the actual working conditions.

[0037] After the spraying operation is completed, the control terminal stops the high-pressure delivery pump 6 and the negative pressure pump 8, the multi-degree-of-freedom control arm 2, the telescopic connecting arm 3, and each telescopic cylinder resets, and the track maintenance vehicle returns to the garage. The filter screen 18 in the collection and filtration chamber 7 can be disassembled, cleaned, or replaced as needed to maintain the filtration effect. This achieves fully automatic and precise spraying of anti-icing coating for urban rail transit contact networks and closed-loop recycling of residual material, significantly improving operational efficiency and protective effect, reducing operation and maintenance costs and environmental pollution, and has good application value.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic spraying device for anti-icing coating on urban rail transit contact networks, comprising a coating circulation tank (1) installed on a rail maintenance vehicle, characterized in that, The paint circulation box (1) is equipped with a multi-degree-of-freedom control arm (2) for controlling the spraying angle. The multi-degree-of-freedom control arm (2) is equipped with a telescopic connecting arm (3) for controlling the length adjustment. The telescopic connecting arm (3) is connected to a connecting arm plate (4) through an angle torsion member. The connecting arm plate (4) is equipped with a spraying end piece and a collecting end piece. The spraying end piece is used to spray anti-icing paint. The collecting end piece absorbs and recycles the sprayed anti-icing paint through negative pressure adsorption. The paint circulation box (1) is provided with a storage chamber (5) inside. A high-pressure delivery pump (6) is provided inside the storage chamber (5). The high-pressure delivery pump (6) is connected to the spraying end part through a delivery pipe. A material collection and filtration chamber (7) is provided on one side of the storage chamber (5). A negative pressure pump (8) is provided on one side of the material collection and filtration chamber (7). The negative pressure pump (8) is connected to the collection end part through a suction pipe.

2. The automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 1, characterized in that, The spraying end component includes an offset translation seat (9) set at one end of the connecting arm plate (4). Multiple spraying covers (10) are set on the offset translation seat (9). Multiple spraying nozzles (11) are set inside the spraying covers (10) in an arc shape. The conveying pipe is connected to the multiple spraying nozzles (11) through a flow control valve. The spraying pressure of the multiple spraying nozzles (11) gradually decreases with the direction of track movement.

3. The automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 2, characterized in that, The offset translation seat (9) includes a fixed seat (901) connected to the connecting arm plate (4) and a slide rail translation seat (902) connected to the spray hood (10). The fixed seat (901) has a slide groove, and the slide rail translation seat (902) has a sliding block (903) located in the slide groove on its back. The slide groove has a built-in push cylinder (904) for controlling the movement of the sliding block (903).

4. An automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 3, characterized in that, The collection end component includes a collection seat (12) set at the other end of the connecting arm plate (4). The collection seat (12) is connected to the suction pipe. A plurality of collection hoods (13) corresponding to the spray head are provided on one side of the collection seat (12). An adsorption air port (14) connected to the collection seat (12) is opened on one side of the collection hood (13) for absorbing the paint.

5. An automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 1, characterized in that, The telescopic connecting arm (3) is connected to a bearing pressure plate (15) at its telescopic end. The angle torsion member includes a torsion motor (16) located on the back of the bearing pressure plate (15). The output end of the torsion motor (16) extends outward through the bearing pressure plate (15) and is fixedly connected to the connecting arm plate (4) to drive the connecting arm plate (4) to rotate.

6. An automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 4, characterized in that, Both ends of the connecting arm plate (4) are provided with load-bearing telescopic cylinders (17). The output ends of the load-bearing telescopic cylinders (17) at both ends are connected to the offset translation seat (9) and the collection seat (12) respectively, and are used to independently control the telescopic distance of the offset translation seat (9) and the collection seat (12) to meet the complex environment in the urban rail.

7. An automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 6, characterized in that, Both the conveying pipeline and the suction pipeline are metal braided pressure-resistant pipes.

8. An automatic spraying device for anti-icing coating of urban rail transit contact network according to claim 1, characterized in that, The material collection and filtration chamber (7) is provided with multiple layers of filter screens (18), which are detachable and easy to replace later.

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