Xuanhua Construction Machinery Blog

Due to the influence of materials, processes and human factors, various failures inevitably occur in the use of  bulldozer with reliable quality . However, if you can properly analyze the causes of various faults and take effective precautions, you can extend the service life of the machine. 1. Reduce the impact of mechanical impurities Mechanical impurities generally refer to non-metallic substances such as dust and soil, and some metal chips and wear products produced by the construction machinery itself during use. Once these impurities enter the inside of the machine and reach the mating surface of the machine, the hazard is great. 2. Reduce the impact of temperature In the work, the temperature of each component has its own normal range. Below or above this range will accelerate the wear of the parts, causing deterioration of the lubricant, resulting in changes in material properties. In the process of using construction machinery, first, it is necessary to prevent overlo

Do you know about  Hydraulic Direct Drive Bulldozer  and Benjamin Holt? It’s amazing of Bulldozers development. Let’s dive in it. The track-type tractor (also known as the crawler dozer) was developed by American Benjamin Holt in 1904. It is a dozer that is equipped with a human-controlled lift in front of a crawler tractor. The power at the time was a steam engine, and then a track-type tractor driven by a natural gas-powered and gasoline-powered machine was developed. The dozer blade has also been developed from manpower to wire rope lifting. Benjamin Holt is also one of the founders of Caterpillar Inc. in the United States. In 1925, Holt Manufacturing merged with C.L and Best Bulldozers to form Caterpillar Bulldozers, becoming the world's first manufacturer of earth-moving equipment. In 1931, it successfully rolled out the first 60-type bulldozers with diesel engines. With the continuous advancement of technology, the current bulldozer power has all adopted diesel engines

Do you know the safety devices on  crawler dozer ? Let's get to know it! 1. Overturning and falling protection device This device can effectively protect the driver's personal safety when the bulldozer overturns or stones fall from high to the top of the cab. Therefore, the device is required to withstand not only a certain amount of force but also absorb a certain amount of energy. It must have a certain rigid structure to resist the impact force, as well as a certain degree of plasticity so that it can absorb the impact energy. 2. Protection devices for forest operations The device is designed to take into account that when the bulldozer works in the forest, fallen trees will cause harm to people and organisms. In order to effectively protect the driver's personal safety, a protective net is installed on his left and right, and a protective frame is installed on the front. The protective frame extends to the front of the body and can also protect the engine's

Let's take a look at what matters should the  high quality  excavator  pay attention to when it rains! 1. Clean in time In case of heavy rain, it should be cleaned in time. 2. Paint surface The acidic components in the rainwater have a strong corrosive effect on the paint surface of the excavator, which will damage the paint surface of the excavator over time. Therefore, in the rainy season, it is best to give the excavator a paint finish. The easiest thing is to wax. For longer, it is more effective to seal the glaze. Regardless of the method, the excavator is put on an invisible protective coat to prevent the paint surface from fading and aging. 3. Chassis care The chassis is the closest to the ground, which is particularly affected by the road conditions, generally, this part is most likely to be rusted, and the wheel shell may even loosen the perforation. Therefore, we must pay attention to the cleaning and anti-rust treatment of the excavator chassis, and do a cha

Bulldozers meet the needs of engineering construction are very important issues for users. Improper selection will limit the efficiency of the machine and even lead to an increase in the machine failure rate, which directly affects the progress of the project and the benefits of the user. Determine the power level of the machine When the user decides to buy a bulldozer with a large power level, it should be selected according to the scale of the project and the reasonable application range of the power grade of the bulldozer. Bulldozers for mine development  are generally 235kW (320 hp) above Bulldozers for general engineering construction, generally 118kW (1 60 hp) to 169 kW (220 hp) Bulldozers for small-scale construction and general farm operations, generally 196kW (130 hp) ~ 118kW (160 hp) Bulldozers for road building  and water conservancy projects are generally 169 kW (220 hp) - 235 kW (320 hp) Bulldozers for large and medium-sized engineering auxiliary operations,

The bulldozer is equipped with a dozer blade, which mainly cuts earth or stone materials or transports at short distances. The production capacity is determined according to the engine power. The bulldozers used for road construction are divided into the medium (59~l03kw) and large (118-235kW). ) and extra large (greater than 235kW) three kinds. Bulldozers are generally suitable for construction environments with strong seasonality, concentrated engineering, and poor construction conditions. 1.  Crawler dozer : This type of bulldozer has the advantages of large traction and strong climbing ability. It can be used in a more sinister working environment. It is a representative type of bulldozer and is widely used in various earth and stone works. 2. Tire dozer: This type of bulldozer has the advantages of high running speed, short working cycle time, no damage to the road due to transportation, and good maneuverability, and is suitable for municipal engineering; 3. Special dozer: