What are the cleaning methods for highways?

At present, the cleaning methods of national highways usually include manual cleaning and mechanical cleaning. The cost of manual cleaning is low, but it requires a large number of personnel, and the cleaning efficiency is low, the traffic disturbance is large, and the accident risk is high. At present, the guardrail cleaning vehicle is mostly used, and the guardrail is brushed with a rotating brush. This article describes a cleaning installation, which is designed in conjunction with the structural characteristics of the guardrail. The guardrail itself is used as a guide rail. During the task, the cleaning installation is indirectly placed on the guardrail, which is driven by a motor and can slide freely on the guardrail. The cleaning process depends on the installation's own gravity. The generated torque is applied to the pressure required in the cleaning process, and the cleaning effect is good. 1. Principles of cleaning and installation scheme design 1. The guardrail is cleaned and installed with the guardrail itself as the guide rail, and is indirectly placed on the guardrail through the sheave. The installation has independent driving equipment and can travel on the guardrail by itself. 2. Comply with the construction specifications of the corrugated beam guardrail of the highway, and complete the high-pressure water washing, brush brushing and rag scrubbing at the same time. The rag is designed with the principle of interpolation, which can always keep the rag and the rail surface in good contact and enhance the cleaning effect. 3. Relying on the torque generated by the installation's own gravity to apply the pressure required in the cleaning process, the force is even, and the cleaning effect is good. Second, the structure of cleaning and installation The new type of highway guardrail cleaning and installation is composed of water tank, frame, motor, water pump, nozzle, brush, rag, hanging wheel frame, sheave and circuit system. The wheel frame and the frame are rigidly connected by screws, the motor drives the sheave to rotate through the acceleration box, and the motor drives the brush to rotate through the synchronous belt. , the water inlet of the pump is communicated with the water tank. When working, just align the sheave with the upper edge of the highway guardrail, turn on the motor and complete the automatic cleaning of the guardrail. 1. Water tank The water tank is installed on the wheel frame through a simple clamping device, its size is 300mm × 100mm, and there is a water inlet on the upper part, which is connected to the water wheel through a flexible water pipe, and the water wheel supplies water to the water tank. The water tank plays an important role in transitional storage of water. 2. Rack and wheel rack All parts are disassembled on the rack and wheel rack. The frame and the hanging wheel frame are rigidly combined by screws, and the combined angle of the two is such that when the grass sheave is stuck on the guardrail, the frame is approximately on the vertical plane. The middle part of the frame along the direction of the rail surface is divided into two guide wheels at the front and rear of the device, of which the front guide wheel is combined with the frame through vibration reduction. During normal tasks, the front and rear guide wheels are in contact with the rail surface. 3. Water spray frame and nozzles The water spray frame is fixed at the front end of the frame, its length is slightly shorter than the column surface, and there are a series of nozzles on it. The water spray frame is combined with the water pump outlet through the latex tube. When the pump is working, the nozzle can emit high-pressure water flow to complete the wetting and cleaning of the fence surface. 4. The brush is made of nylon bundles with a diameter of about 1mm, and the nylon bundles are fixed on the rigid sheet, and the steel sheet is then put on the brush shaft, which is divided into two upper and lower brush machine factory, and the device between the two brush machine factory There is a small synchronous pulley, and the brush shaft is disassembled on the bearing located in the middle of the upper and lower edges of the frame. The small synchronous pulley is connected with the large synchronous pulley through the synchronous belt. When the motor drives the large pulley to work, the brush can rotate at a speed of 300r/min to brush the column surface and complete the second cleaning. The theory shows that when the brush has an operating torque on the guardrail, the vertical distance H from the center of rotation of the brush to the surface of the guardrail is about 1/3~1/2 of the brush rotation extension radius. Therefore, the diameter of the brush is Take 200mm. 5. The rag The principle of interpolation is used to implement the design. Fix the rag holder on the rack with screws. The side of the rag holder facing the guardrail is equipped with a series of small dampers, and the other end of the damper is connected with an elastic rag (which can be stretched). The damping length is designed so that it is in a compacted configuration no matter where it comes into contact with the rail. When scrubbing the wave (W) column surface, the peak of the wave (the high part of the column surface) will reduce the vibration by a small amount, and the vibration reduction at the trough will be compressed by a large amount, so that the elastic rag will also spread in the wave shape (W) on the column surface, Keep in good contact with the column surface all the time, so as to strengthen the effect of scrubbing and complete the third cleaning. 6. The sheave is installed on the pulley frame, so that the groove can be stuck on the upper edge of the guardrail. The groove is connected with the motor through the acceleration box, and the motor drives the sheave to travel along the direction of the guardrail when the motor works. 7. Circuit system Because it is installed for field operations, the battery is used as the power source, and it can be charged when it is not working. In order to improve the operation efficiency of cleaning the guardrail, the rotation direction of the column brush and the driving direction of the cleaning vehicle should be flush (that is, the tangential direction of the rotation of the column brush is opposite to the driving direction of the vehicle). At this time, the brush only needs to rotate in one direction. Can.
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