Quanzhou Tianlei Construction Machinery Co., Ltd.-Industry News

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17

2019-01

Six bans on excavators

I believe that we all know that excavators are the main machinery in engineering construction, it has a wide use, excellent function, digging bucket excavating force, easy to control and other advantages, and in improving the speed of engineering construction, reduce the labor intensity of workers, etc., play an increasingly important role.
22

2018-10

Talking about the hydraulic drive motor of crawler excavator

　　Anyone who knows about the excavator knows that the excavator's walking and work are done by hydraulic pressure. Some people may ask, and also walk with the crawler, why the tank can go so fast, and the excavator can only Go slowly? 　　This is the difference between the power output system. The tank is mechanically rigidly connected. Like the driving method of the car, the gearbox is switched by the gearbox to coordinate the relationship between power and speed, and the excavator is driven by hydraulic drive. It is not that the hydraulic drive will be slower than the mechanical drive, but it is determined by the work demand. The so-called demand determines the production. The excavator does not need a high travel speed when moving, but requires a large driving force, so the excavator uses a column. Plug-type drive motor, the biggest feature of this hydraulic drive motor is the output of low speed and high torque. 　　Hydraulic drive motors are generally divided into gear type, vane type
22

2018-10

How to disassemble the guide wheel?

　　1. Remove the track of the excavator first. 　　Remove the single valve in the place where the grease is in the mouth, put the butter inside out, push the guide wheel in the bucket, and make the track looser. If the excavator used is 150 or less, remove the track pin. If it is more than 150, use the bucket to hook off the track. Remember to remove the single valve, otherwise it is not easy to remove the track, it is not easy to install. 　　2. Install the guide wheel. 　　The guide wheel installation is the same as the general wheel mounting method. Use a jack to support the excavator, then use a screwdriver to unscrew the screw. After removing it, install the new wheel and apply grease to complete the installation.
22

2018-10

How to install the excavator drive wheel

　　1. Release all the butter inside the tensioning cylinder and pull the track off with a tool or bucket. 　　2. Loosen the 4 bolts between the tensioning cylinder and the guide wheel and remove the guide wheel. 　　3. After the installation is completed, inject the butter into the tensioning cylinder and hold up the track.
22

2018-10

How to distinguish the guide wheel and drive teeth of the excavator

　　The differences between the two are more obvious as follows: 　　1. The front wheel that turns forward is the guide wheel. Inside the guide wheel is a toothless wheel. 　　2. Behind the guide wheel is driven, the drive has a semi-circular iron plate, the outside is a round, with teeth inside.
22

2018-10

What is the drive wheel?

　　The popular saying is the wheel that pushes your car forward. It carries the power of the engine output. For example, the rear wheel of the bicycle is the driving wheel.
22

2018-10

Analysis of the status quo of machinery manufacturing industry

　　1. The industry is developing rapidly, and the status of pillar industries is further highlighted. 　　Since the reform and opening up, China's machinery industry has developed from a very weak foundation to an industrial production system with complete categories and considerable strength. The total economic output accounts for more than two-thirds of the entire equipment manufacturing industry, and the growth rate is much higher than that of manufacturing and GDP. speed. 　　2. The system reform has made important progress and the concentration of production has been continuously improved. 　　In recent years, with the support of the policies of the central and local governments, some of the large state-owned enterprises that have undertaken the revitalization of the heavy responsibility have realized the reduction of staff and efficiency, the separation of social functions, the separation of main and auxiliary, and the reform of debt-to-equity swaps. The burden of state-owned enterprise
22

2018-10

Future development of small construction machinery market

　　The application field of small construction machinery in China is gradually expanding. In the next few years, its market growth potential is huge, and the sales volume may reach 30,000 to 40,000 units per year. With the continuous improvement of China's infrastructure construction, the domestic construction model will gradually change from “big-bang” to “fine-cut”, and small-scale construction machinery and equipment will have more and more application space. Coupled with the gradual deepening of China's new rural construction, the application of small equipment in rural and small town construction will be more and more; at the same time, with the gradual increase of construction materials such as environmental protection, ecological construction, gardening, greening and farmland construction, Small construction machinery must also have an increasingly wide stage. 　　China's small construction machinery purchase group has expanded, and the purpose of purchase has become more rational.
22

2018-10

Analysis of the leakage of the roller

　　The heavy wheel is an important load-bearing component of the crawler type construction machine (commonly referred to as the "lower roller"). It consists of the roller body, the support shaft, the left and right support seats and the seal assembly. The support shaft is fixed on the frame by the left and right support seats, and the press-fitted sleeve is rotated in cooperation with the support shaft, and a sealing assembly is arranged between the rotating wheel body and the fixed left and right support seats to maintain the support shaft. Sealing with lubricating oil such as bushings. The sealing assembly is composed of a pair of double-conical metal sealing ring and two butadiene rubber fixing compression rings. The rubber ring is respectively installed in the sealing seat of the wheel body and the bearing seat. Since the metal sealing ring is subjected to the squeezing of the rubber ring to ensure that the annular blade belt is tightly engaged in rotation, the sealing is a floating
22

2018-10

What is the cause of the semi-trailer drive wheel slip?

　　First of all, the reason why the wheel can run normally is, in principle, that the friction between the wheel and the ground is greater than the traction on the wheel. Then the friction is derived from the normal contact between the tire and the road. The bearing pressure comes from the vehicle itself. The sum of the weight and the weight of the loaded cargo. 　　When the car is full or empty, the lever phenomenon will occur. The rear wheel of the trailer will carry the main pressure, and the front of the trailer will slightly tilt, which may cause the drive wheel to slip. The reason why it appears on the uphill slope and other similar road conditions is because the tire grip is small, that is, the old driver is known as the unstoppable car. 　　After this problem occurs, the position of the goods pulled in the compartment can be adjusted, the cargo can be placed as far as possible, and the pressure of the driving wheel can be increased, and the slipping problem can be solved in a shor

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