With the rapid development of the hydraulic elevator industry and the increasing market demand, enterprises, factories have begun to expand the scale of production, the industry a prosperous scene, but also produced some problems, the main problems are as follows:
1, some enterprises are still relatively poor technical innovation ability, some enterprises do not pay much attention to product innovation and new product development, the product more than ten years of consistent system production, product specifications single, non-standard product production capacity is not strong, can not meet the special needs of customers on the opposite sex of products, the market business scope is narrow. Big and small manufacturer product production quality is intermingled.
2. Special parts, dominated by imported key components (especially), in recent years, foreign products have entered the domestic market, Bronto companies such as Finland, the United States JLG, Snorkel, Skyjack and other companies, and some famous enterprises of Britain, Denmark has successively set up an office at home, and in the great height and special products still occupies the domestic major markets, such as high altitude, big spider high insulation work vehicle platforms and self-propelled aerial work platform, etc., domestic products have a lot of blank.
3. Domestic basic parts supporting level is poor, domestic products of basic parts supporting manufacturers are few, specifications and varieties are few, supporting level is poor, electrical components, hydraulic components, power components performance and reliability is not high, which also affects the development of domestic products.
4. Specialized production level is low, most domestic enterprises are mainly independent production, specialized production level is very low, backward technology, low labor productivity.
The storage and transfer of working oil should be paid attention to in normal use. Oil drums should be marked and covered up to avoid the hydraulic machine barrel rust rust sheet into the barrel. If the equipment is shut down for more than 4h, the hydraulic pump should be run for 5min without load before starting the actuator.
The power unit is designed to be optimized for a variety of applications, such as truck operation in harsh environments, heavy lifting for extended periods of time, and other applications that require high performance and quality products. The result is an extremely diversified and versatile platform, which can deal with most application conditions required by the market by using standard components. The inventory of customer hydraulic components is reduced to a small degree, and the workload of non-standard design is greatly reduced.
The hydraulic power part is marked by circuit diagram method to indicate the relationship between abnormal function components. Hydraulic source rich in hydraulic pump, motor and hydraulic auxiliary components; The hydraulic control section contains various control valves, which are used to control the flow, pressure and direction of the oil in the mission. The implementation of a part of the rich hydraulic cylinder or hydraulic motor, which can be begged according to the theory to choose.
In the analysis and description of theoretical tasks, the general selection of block diagram flashing equipment in the theoretical operation. Hollow arrows indicate the flow of signals, while solid arrows indicate the flow of energy.
