Breaking hammer capable of independently adjusting impact frequency and impact energy

Abstract

A breaking hammer capable of independently adjusting impact frequency and impact energy comprises a hydraulic oil tank, a main pump, a two-degree-of-freedom excitation valve, an industrial personal computer and a breaking hammer body. A proportional electromagnet and a servo motor are arranged at two ends of the two-degree-of-freedom excitation valve correspondingly. The hydraulic oil tank is sequentially connected with a first filter, the main pump, a second filter and an oil port P of the two-degree-of-freedom excitation valve through oil pipes, and an oil port T1 and an oil port T2 of the two-degree-of-freedom excitation valve are sequentially connected with an overflow valve, a cooler and the hydraulic oil tank through oil pipes. The oil port A is connected with an oil port P of a hydraulic cylinder body through an oil pipe, and an oil port B is connected with an oil port O of the hydraulic cylinder body through an oil pipe. The hydraulic cylinder body is provided with a pressure sensor in a piston upper cavity, and is provided with a displacement sensor in a piston lower cavity. The pressure sensor and the displacement sensor are electrically connected with the industrial personal computer, and the industrial personal computer is electrically connected with the proportion electromagnet and the servo motor. According to the breaking hammer, the impact frequency and the impact energy can be independently adjusted when the breaking hammer works.

Description

technical field [0001] The invention relates to a breaking hammer whose impact frequency and impact energy can be adjusted independently. Background technique [0002] Hydraulic breaker, also known as breaker, is a breaking tool that converts hydraulic energy into mechanical energy impact. The hydraulic crushing hammer uses a hydraulic pump as the power source and hydraulic oil as the medium to drive the piston rod to reciprocate and hit the crushing rod, thereby outputting mechanical energy to the outside to achieve the purpose of crushing objects. At present, most of the breakers on the market have low working efficiency and a single crushing method. In practical applications, they often face complex working environments and require a combination of multiple crushing methods. For example, there is no distinction between hard rock and soft rock conditions. , the hard rock working condition is characterized by high energy, low frequency, and long stroke movement of the pist...

AI Technical Summary

Problems solved by technology

At present, most of the breakers on the market have low working efficiency and a single crushing method. In practical applications, they often face complex working environments and require a combination of multiple crushing methods. For example, there is no distinction between hard rock and soft rock conditions. , the hard rock working condition is characterized by high energy, low frequency, and long stroke movement of the piston; the soft rock working condition is characterized by low energy, high frequency, and short piston stroke. Most breakers have fixed piston stroke and frequency. It will cause a lot of energy waste and increase the cost

Patent CN110005015A discloses a double-speed frequency modulation breaker control system and control method. The system includes a main pump, a main valve, a hydraulic control reversing valve, a controller, an electrical switch, a nitrogen pressure sensor, a stop valve, a breaker body, Stroke switching valves and hydraulic oil tanks control the work of the reversing valves and stroke switching valves by comparing the pressure data collected by the nitrogen pressure sensor with the set values. Independently adjust the working frequency and impact energy of the hydraulic hammer. Most products on the market also have the situation that the frequency and impact energy cannot be adjusted independently, and the real-time operation feedback of the control system cannot be realized.

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