Research on the development of complex pendulum crushers at home and abroad

(1) The development space of foreign large-scale compound pendulum jaw crusher has a large space, which has replaced the simple pendulum crusher . The original Finnish nordbeg company no longer manufactures the simple pendulum jaw crusher, and the original Swedish S. edala company only manufactures the simple pendulum jaw crusher when there is a special order.

(2) A lot of researches have been carried out on small and medium-sized jaw crushers in China, and negative support, zero suspension, negative suspension, rotary, double-chamber and double-action jaw crushers have appeared, and the structure is optimized by computer. The structure of the crusher is becoming more and more perfect. The goal of the research was to obtain a finer product and achieve a higher crush ratio.

(3) In order to meet the requirements of reducing product grain size in medium and small-scale production, a fine-sized jaw crusher with complete specifications was developed.

(4) More computerized optimization of the crushing cavity type, increasing the depth of the crushing cavity, improving the surface shape of the lining, and using the principle of material layer pulverization as much as possible.

(5) Foreign advanced equipment adopts hydraulic adjustment of discharge port, hydraulic insurance and cleaning and crushing chamber device, and adopts computer automatic control and remote control technology.

(6) The welding frame is used in many places, and the electric slag welding process is used in the manufacture of large jaw crushers in foreign countries. Some of them also use welded structures.

B. Direction of development

There are tens of thousands of manufacturers engaged in the manufacture of jaw crushers at home and abroad, but the more famous foreign manufacturers include Sancivik, Kobe, Krupp, Cedarapids, Telesmish., Metso, Rover, etc. The products are mainly compound pendulum type. Jaw Crusher. The plants with good quality and high technical level are Sandvik.Cedaraprds and Koble. For the compound pendulum jaw crusher, the author believes that the general development direction is:

(1) Development to large size and large size. For example, Sandvik and our company have produced a large-scale compound pendulum crusher of 1600 mm Ã— 2 200; a large-size compound pendulum jaw crusher developed by Kobe, Japan, which is different from other companies in the analysis concept of the crushing process. , have unique insights. China Beijing Institute of Mining and Metallurgy proposed the concept of dynamic corner design, theoretically solved the parameter optimization problem of pendulum crusher, and developed a dynamic hyperbolic hyperbolic cavity jaw crusher and externally driven jaw crusher. In cavity design optimization and structural innovation.

(2) In-depth theoretical research to optimize the crushing cavity type.

(3) All use sliding bearing support to replace the sliding bearing to reduce r energy consumption.

(4) The new overload protection device has changed the traditional broken bracket protection system, and the hydraulic overload protection and hydraulic adjustment of the discharge u have improved the running performance of the jaw crusher.

(5) Personalized design. Starting from the study of rock mechanics, the design of individual target users is designed to make the adaptability greatly improved.

(6) Improve the mechanical manufacturing, composition, component quality and design level, reduce noise, reduce the consumption of consumable parts, increase the crushing ratio, and reduce maintenance costs.

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