Daily maintenance and maintenance of Yuntai fire truck

What is a ladder fire truck ?

Yunti fire trucks have a hydraulically elevated platform for firefighters to climb to fight high-rise buildings, tall facilities, oil tanks and other fires, rescue trapped people, rescue expensive materials, and complete other rescue missions.

Yunti fire truck has the advantages of simple structure, smart and lightweight vehicle, safety and reliability, high work efficiency, etc. It has always been highly evaluated in dealing with emergencies and fire rescue. The ladder ladder fire truck is a full swing, straight ladder, all performance agencies are using electric control hydraulic drive. Today's cloud ladder fire truck has become a comprehensive high-level fire engine that combines high-altitude firefighting, high-altitude jetting, and high-altitude rescue and rescue operations.

With the gradual distribution of Yuntai fire trucks to grassroots squadrons, the fire fighting capability of fire fighting high-rise buildings has been further improved. However, ladder ladder fire trucks belong to special fire fighting vehicles and belong to manned special equipment for high-altitude operations. The car can operate safely, give full play to the excellent performance of the equipment and avoid operating mistakes. The operator must be familiar with the various safety protection and emergency measures and must not make the aircraft in a dangerous state to avoid major accidents.

How to carry out daily maintenance and maintenance of ladder trucks ?

In general, the technology and performance of Yunti fire trucks are reliable in actual operations and the failure rate is relatively small. However, if the operation, maintenance and maintenance are not properly performed, various failures will occur, which will affect the actual use of fire fighting. Therefore, the correct operation and maintenance of and maintenance of the ladder truck is an important factor to ensure that it is ready for operation and trouble-free operation at any time, and to extend its service life. The requirements for the maintenance and service of Yunti trucks are as follows:

1. The storage of ladder trucks should be parked in a clean, dry, ambient temperature 10°C-20°C garage room and kept in a non-working state.

2. Every day, check and maintain the connecting parts and fasteners of each assembly mechanism of the ladder truck, whether it is intact, fastened, and locked. The part that is separated or loosened should be tightened, and the missing parts should be complemented to ensure that the connecting parts of the ladder truck units are reliably and safely engaged in the climbing operation.

3, daily should be added fuel, lubricants, grease injection. Add brake fluid, shock absorber fluid or hydraulic drive system working fluid to maintain the normal dispatching work of the Yuntai vehicle.

4. The operator should always check whether the wire rope of the tow ladder lifting movement is stretched and relaxed, and the wire rope to deal with the extension should be adjusted timely by adjusting the bolt. The wire rope should be inspected at any time for broken wires, broken strands, disconnection, deformation and corrosion, etc. If one of the above problems is found, the wire rope must be replaced with a new one. At the same time, the steel wire rope should be regularly greased to form an oil film on the surface to prevent rust and lubricate, so as to ensure the safe operation of the ladder truck during use.

5. The contact parts of the movements of the ladder ladder fire trucks shall be filled with oil and kept lubricated every month or after actual use, so that they can be flexible, free, and reliable. The lubrication points of the ladder trucks are as follows:

(1) Ladder structure: rails and guide rails for mutual movement, supporting rollers, side pulleys, extension ladder wheels, ladder wheels, adjustment rods, frames, shafts and shaft brackets for swinging platforms, chains driven by instrument mechanisms, and shafts , wire wheels and shafts, lock ladder shafts, and shaft brackets.

(2) Brackets and brackets in which the luffing mechanisms move relative to each other are connected to a shaft and a pedestal, a shaft, a yoke and a lug attached to the luffing cylinder.

(3) Slewing ring, ring gear, and reducer of the swing mechanism.

(4) The inner and outer sleeves of the leg-supporting mechanism, the fixed cylinder pin of the horizontal cylinder, the spherical swinging leg plate, and the hand pressure pump welding and twisting shaft frame.

6, hydraulic system maintenance and maintenance. The hydraulic oil in the hydraulic system of the ladder truck is the working medium that drives the motion of each mechanism. Therefore, the hydraulic oil must be kept clean. Under normal conditions, the vehicle should be cleaned and replaced every three years (when the hydraulic oil is deteriorated or dirty, it should be cleaned or replaced at any time), and 32# anti-wear hydraulic oil should be used.

During operation, the fuel level of the fuel tank should be checked at any time. When the oil level in the fuel tank is less than 4/5 of the oil mark distance during driving, it should be supplemented so as to ensure the normal operation of each organization. Added hydraulic fluid to the oil limit.

The filter element installed on the side of the fuel tank should be checked and cleaned once every quarter (the vehicle with no hydraulic system failure can be appropriately relaxed). The oil filter uses a self-sealing suction filter outside the box. When replacing, cleaning the filter element or repairing the system, simply unscrew the filter cover. At this time, the self-sealing valve will be automatically closed and the oil path of the fuel tank will be isolated, so that the oil in the oil tank will not flow out, so that the filter element can be cleaned or replaced. Maintenance system is very convenient.

In the actual combat or drill, the ladder truck must inspect at any time and find out whether the hydraulic drive system or hydraulic components have the performance disorder or out-of-control phenomenon. The fault will affect the use, so analyze the common faults of the ladder truck to do the maintenance work and use the function of the ladder truck. Efficiency is extremely important. If it is found that the hydraulic system piping, loose fittings or oil leakage, should be taken to take measures such as tightening or replacement seals and other measures to be excluded. In the process of maintenance and repair, the hydraulic system of the Yunti truck must strictly prevent debris from entering the hydraulic system, because the sundries dissolved in the system or components will cause the hydraulic system and the actuator to be out of adjustment, lose control, and even prevent the normal use of the ladder truck. Big, it must cause the operator's attention.

After the hydraulic system is maintained, the air may enter the system. The air dissolved in the oil will cause the actuator's actions to produce crawling, noise, and even cause vibrations. At this time, all the actions of the ladder truck should be taken up and down. Throughout, until the movement is smooth, the air in the system will be discharged from the fuel tank.

7, electrical system device maintenance and maintenance

The operator should always check the power supply - whether the battery is supplied with sufficient power, whether the alarm indicator and the light are bright, whether the electronic control switch is sensitive and reliable, whether the electrical circuit has virtual connection, imaginary welding, and virtual connection. If problems are found, repair or replace the component immediately. . To achieve the effective operation of the electrical control system. It is necessary to check whether the brush contacts of the conductive system on the center and the off-slewing joint are firm and have good contact. If problems are found, timely adjustments and maintenance are needed to ensure smooth flow of the power supply system to and from the vehicle.

Always check whether the current controller, potentiometer, and circuit board that control the operation of the electro-hydraulic proportional valve and the connector are firm and tight and the contact is good.

Whether the limit contactless switch of the platform climbing operation is effective, whether the intercom communication between the high altitude and the ground is unblocked, and the problem is found to promptly repair or replace the components, so as to ensure the normal operation of the electronic control system of the ladder truck.

In addition, the operator should also maintain a clean and dry external environment at the electrical system components, accessories, and line junctions.

8. Under normal conditions, every three months in the ladder shop, the operator should conduct a full-scale inspection of the actual operation of the entire vehicle, so that the wartime can be prepared and dispatched at any time.

9. After the ladder trucks are used in actual combat, they should be carefully cleaned, wiped, lubricated, and carefully inspected, maintained, and maintained.

Talking about how to use the maximum use efficiency of ladder fire truck in the fire

1. Strengthen the training of full-time personnel in operating ladder ladder fire trucks so that operators can master their use methods, performance of various parts and precautions. As one of the special vehicles that are indispensable for firefighting in high-rise buildings, the Yunti Fire Truck is a comprehensive fire fighting vehicle that combines high-altitude rescue, rescue, and fire fighting. It has strong practicality and can only fully understand and understand it. Performance, structure and characteristics can ensure the safety and reliability during its use.

Second, the ladder ladder fire truck and its equivalent type of climbing fire vehicles are large-tonnage, ultra-high-rise motor vehicles, and therefore have a very high demand for the environment they use. After such fire-fighting vehicles enter the site, they should choose the flat and hard ground as much as possible to avoid the need for emergency rescue, and avoid places where the dunghills, water pipes, gas and cables around the buildings are located; A solid backing plate is placed under the supporting leg so that the vehicle can maintain a stable horizontal state. When the ladder truck is put into actual use, it should extend the horizontal leg as far as possible, and all four legs should support the ground.

Third, when using a ladder for horizontal or negative angles, the extension length of the ladder frame must not exceed 50% of its elongation. For example, for a 40-meter ladder, the extension height should not exceed 20 meters. At the same time, it should also fully consider the load of the ladder-end pan/tilt, and should be reduced by 20% to 40% on the basis of its allowable maximum weight. When the ladder is fully extended and its amplitude is less than 70 degrees, its rotation operation must be prohibited.

4. The ladders of the ladder ladder fire truck adopt the method of wire rope pulling and lifting. Therefore, the steel wire rope should be inspected and greased frequently to form a layer of oil film on the wire rope to prevent the steel wire rope from rusting. For the occurrence of wire breakage, the wire rope is disjointed or deformed. Corrosive, remember to stop using, must replace the rope. The wire rope is run through the bottom winch and the pulley at each ladder end. When the ladder is telescopic, with the different strength of the wire rope, the phenomenon of tripping with the ladder-end pulley occurs. In general, the operator concentrates his energy on the ladder during operation. Whether the end is close to the predetermined position but ignores this link, when such a phenomenon occurs, not only is the wire rope itself easily damaged, but when trapped or rescue workers pass through the ladder, the force of the ladder will drop, which is likely to occur. Danger.

5. Strengthen the height training of firefighters and continuously improve their working ability at high altitudes. When working at heights, especially on the top platform of the ladder truck, firefighters should always be vigilant, stick to their posts, observe and observe, and maintain contact with each other. Yunti fire trucks are generally operated by two platforms, and firefighters are In the process of high altitude rescue, psychological factors influence it, and it is easy to cause misoperation due to excessive tension. Therefore, how to self-adjust psychological pressure is also an important part of successfully handling high altitude accidents.

Sixth, do a good job of personal protection measures before the platform on the top of the ladder to shoot training or fire extinguishing operations. When firefighters use ladder trucks to carry out high altitude aerial firefighting training or operations, they should fasten their seat belts in advance and fix the body and platform guardrails securely. When shooting water, they can deflect them up and down or left and right as required, aiming at the fire source to save fire within an effective distance. The effective distance mentioned here cannot be too close to the fire source, to avoid scattering of fire points or damage to firefighters and vehicles due to impact of water flow, nor too far from the fire point, resulting in waste of water and long pumping time. The operation failed and the fighter was delayed. When the ladder cannot rotate at the same time to ensure the stability of the ladder, it is necessary to avoid suddenly starting or suddenly stopping the water spray from the platform in the platform at the top of the ladder. The pumping pressure of the water pump cannot exceed 1.3 MPa. When water supply is required to pressurize or decompress, it should be performed slowly.

7. Fully consider the impact of climatic conditions on the operation of the ladder truck. When the instantaneous wind speed exceeds 5 levels, the ladder truck can be put into actual use, but it is necessary to pay attention to the operation under the condition of ensuring safety, pay attention to observe the surrounding situation and increase the wind power. When the instantaneous wind speed exceeds 7 levels, the use of the ladder should be stopped. Vehicles, more than 20 meters above the ground, wind power is much larger than the ground. Therefore, under the harsh climate conditions when operating ladder ladder fire trucks, we must not rely on experience to force the operation.

8. Adhere to the daily inspection and maintenance system to ensure that ladder trucks are ready for operation at any time in order to quickly and efficiently implement high-rise fire fighting and rescue operations, minimizing property loss and casualties.