Analysis excavator brake valve caused by work weakness fault

A GJW111 excavator in the course of the work appeared slow movement of the whole machine, weak work failure phenomenon. Fault reasons are: hydraulic pump wear, servo regulatory agencies stagnation, to the system to provide insufficient hydraulic flow, the main safety valve failure, the engine o

ZF and Dongfeng Commercial Vehicle Sign Cooperation Agreement

At the 2010 Hannover International Commercial Vehicles Show, ZF AG and Dongfeng Commercial Vehicles consolidated their strategic partnership. In addition to the joint development work, the agreement signed by both parties includes ZF's provision of a mechanical automatic transmis

*** Exchange rate fluctuated yesterday

The Hong Kong Wenhui News (Reporter Zhuo Jian'an) suddenly raised the interest rate by 0.25 per cent in the Mainland, triggering fierce fluctuations in the international foreign exchange market and commodity markets. The exchange rate of the renminbi ag

The characteristics of the trolley sliding wire in actual use

The trolley trolley line is a very important type of auxiliary equipment in many high-altitude operations. In practical applications, what kind of characteristics does this type of equipment have?

The first is in the safety and stability of the overhead trolley line itself. As a speci

Market survey of heavy truck dealers in off-season


In order to investigate the situation of the market's first-line inventory, this reporter interviewed two mainstream heavy-duty truck dealers in the northeast, north, east, central, south, and northwest regions. Given that dealers usually do not need to stock inventory to sell real es