How often should forklift tires be changed?
Usually, whether it is a forklift or an automobile, the most accurate basis for changing a tire is the pattern of the tire, when the depth of the remaining grooves on the pattern of the forklift tire is less than 0.16 cm, it must be replaced. . At this time, such tires are often slippery. The drainage and puncture resistance of the tires have been greatly reduced, which is very dangerous to drive. Another point to keep in mind is that if the number of times the steering tire is repaired is excessive, it should be replaced for safety reasons, which can reduce the risk of a tire blowout. The typical forklift tire change time is similar to that of a car is 4 or 5 years, but the material of the tire, the working environment and the driving habits will all affect the life of the tire.
1. Forklift tire life
The service life of forklift tires varies according to the environment and usage patterns of different use sites, specifically as follows:
– Under certain conditions of load and driving environment, forklift tires with suitable tire pressure test show that when the tire pressure is lower than 20%-25% of the standard value, the fuel consumption will increase. 20%. When the tire pressure of the forklift truck is higher than the standard value, the center of the tire rim hits the ground, and the contact area between the tire and the road decreases. The load per unit area increases and the wear of the tire center also increases.
– Under normal load and tire pressure, the forklift speed will cause the deformation frequency of the forklift tire, the vibration of the body and the torsional deformation of the circumference and the side of the tire (forming a static wave) to increase. heat. The working efficiency of forklift tires decreases, even cracking and peeling occurs, which accelerates tire wear and damage.
– Under a certain tire pressure, the tire overload will increase the deflection and deformation, and at the same time the stress of the wire and rope will increase, which is easy to cause the wire on the side of the vehicle to break, loosen and separate the wire, and stress. pressure on the carcass wire. The design allowable stresses and ground pressure of the tire will be exceeded, the heat generated will increase, the tire body temperature will increase and the load carrying capacity will decrease. At the same time, due to the wear of the tire shoulder and the ground, especially when encountering obstacles, even small stones will cause the tire rim to burst. Practice has proven that in the case of turning and driving on uneven roads. When the tire load exceeds 20%, the mileage will be shortened by 35%, when it is over 50% it will be shortened by 59%, when it is exceeded 1 time, it will be shortened by more than 80%.
– Road conditions also have a great influence on tire life, affecting the friction between the tire and the ground and the dynamic load on the tire. When forklift tires are corroded by grease, acids, alkalis and high temperatures for a long time. The physical and chemical properties of the tire will change, the bearing capacity is greatly reduced, the tire is prone to puncture during use. In addition, if the tire is corroded by oil, there will be a phenomenon of peeling of the air seal, a small area of rubber peeling off at the tire mouth, and separation of the body wire and rubber. Because the sticker is not compatible with oil-filled rubber, even a small tire damage will also lose the ability to repair.
– High temperature will reduce the tensile strength, elongation and hardness of the rubber, reduce the adhesive strength between the rubber and the wire, and also accelerate the aging of the rubber. Due to the aging of the side rubber and severe cracks and deformation of the side wall, the cords of the carcass layer are separated from the rubber.
– Due to the different load distribution of the front and rear axles, the working characteristics of the rudder and the rudder are different. Road conditions are different, so the wear condition of each tire is not uniform. The same size, structure, grade and pattern will accelerate the wear of the tire.
– During use, if you do not pay attention to proper alignment and regular rotation, the tire will bear an uneven load, which also causes the tire to wear faster.
2. Notes when using forklift tires
– Forklift tires that have expired above can explode or explode, causing danger, to ensure safety when operating, it is necessary to change new tires. The wear limit is: the remaining tread depth on a construction machinery tire (about 1/4 of the tread width) is 15% of the tread depth of the new tyre. When the tire shows uneven wear, tread wear or other than normal wear. Limits of use for failures are: external damage to the core wire tension or core wire has broken. Core wire cut or loosened, forklift tires peeled (separated). Damaged rim, gas or abnormal repair. When changing tires, it is necessary to have professional forklift maintenance technicians to avoid unnecessary damage.
– Forklift tire pressure. When the tire temperature cools down before commencing operation, measure the tire pressure first. If the tire inflation pressure is too low, it can be overloaded, if the pressure is too high, it will cause the forklift tire to puncture and explode. About 15%-25% at normal load (lift arm placed horizontally). When checking the inflation pressure of forklift tires, also check the wheels for scratches or flaking, nails, or metal fragments that could cause punctures and abnormal wear. Remove rock fall in the active area and maintain a pullable pavement
