Liquid gas buffer steel industry capacity utilization rate of about 90% this year, some car companies capacity utilization rate has reached 120%, many automakers worker are running on two shifts or three shifts, engineering machinery has been basically five or six months without shutdown. The expansion of future capacity will drive demand for machinery and equipment manufacturing. Secondly, the industrial upgrading of traditional industries and the initial construction of plant construction and equipment investment will also promote the development of engineering machinery and equipment manufacturing. From a global perspective, the "path dependence" of industrial division of industry and industrial development also determines that China will continue to develop its machinery and equipment industry in the future.
In the international division of labor, China's advantage lies in manufacturing, and now China's machinery and equipment manufacturing, has the stronger core competitiveness. Although the government is now vigorously supporting emerging industries, it will not slow down to the world in terms of machinery and equipment manufacturing that already has global competitive advantage. In addition, emerging market countries have strong demand for infrastructure construction. China also encourages competitive enterprises to go abroad through foreign investment, and machinery and equipment will be brought abroad more.
The buffer can interact with the end of the orbital end (another type of safety device) at the same level. If two cranes collide in the same span, the buffer that is opposite to the metal structure of the two cranes will function. The shock absorber can be converted into elastic potential energy absorption by itself, so as to reduce the impact of impact and avoid damage to the crane. Common rubber bumper, spring buffer and hydraulic buffer. When a mechanical position limiter or a braking device fails, a crane or a small car that runs to the terminal will collide at the end of the running end due to inertia. The purpose of setting the buffer is to absorb the operation function of the crane or lifting trolley to slow the impact. The buffer is set in the position where the crane or lifting trolley is in collision with the stop body. A buffer should also be set between the cranes running on the same track and the two cars on the same bridge.
Using the hydraulic buffer in the elevator, it is borrowed from the hydraulic damping effect, and the cushioning speed of the car is slowed down until the elevator stops. The hydraulic buffer is a necessary safety device for the elevator, otherwise the equipment will stop and start quickly, which will have a great security impact on the equipment and passengers. The hydraulic buffer in the elevator must have a pedestal with a height of at least 0.5 M.Its average reduction speed should not be greater than 1g, and the deceleration time of more than 25g should not be greater than 0.04 s. Otherwise the impact will be harmful to the human body. The hydraulic buffer on the train is used on the hook. The train's cushioning effect is the same as the elevator, which is also designed to improve the comfort and safety of passengers. For the performance requirements of the hydraulic buffer, it is natural that when the train stops, the human body doesn't feel very good. For example, when the impact velocity is 7km/h, the considerable force of the hydraulic buffer should be at 600kN, which should be at a considerable distance of 58mm.