An electric harmonic reciprocating line motion impact device

Abstract

The invention relates to an impact device with electric harmonic beating moving to and fro linearly. The impact device comprises a moving iron core, a fixed iron core, a coil, a sliding bush, an impact rod, an impact head, a locating spring, a kick spring, a machine frame and a power supply circuit, wherein, a silicon steel sheet of the fixed iron core is arranged with the plane of the silicon steel sheet along the impact rod and vertical to the pole surface of the moving iron core, the impact rod driven directly by the electric power and the alternative forces of the rebound of the impact and the return of the spring and is compelled to carry out a harmonic beating and reciprocating and linear impacting movement. Compared with the piston-typed impact equipment, the impact device of the invention has remarkable energy conserving, high impact frequency, great impact force and easy and simple manufacturing. The impact device is applicable to a rock drill, a drop pile hammer, a stone crasher, a vibrator and various impact tools.

Description

technical field [0001] The invention is an electric harmonic beat reciprocating linear motion impact device in which electric energy directly acts on the reciprocating linear motion. Background technique [0002] In modern mining, railway and road construction, water conservancy construction, construction and installation, etc., rock drilling and blasting blast holes, ore crushing, foundation reinforcement piling, concrete vibrating and compacting, wall drilling, installation riveting and nailing , silo and chute shock anti-blocking, steel surface shock derusting and other construction operations, widely used various impact equipment and appliances that use reciprocating motion impact work, including rock drills, impact drilling rigs, vibratory impact pile hammers, impact Hammers, vibrators and various hand-held impact appliances, etc., the core components of which are reciprocating motion mechanisms for impact work. There are several types of power for the reciprocating mo...

AI Technical Summary

Problems solved by technology

The energy loss of fluid transmission is large, especially in mining, the air supply distance of pneumatic rock drilling equipment is generally relatively long, and some compressed air pipelines are as long as thousands of meters, and the energy loss of air leakage and pipeline resistance is very large. Due to issues such as efficiency and no-load operation, the overall energy efficiency of mine pneumatic rock drilling systems is very low. Requiring 22 kilowatts, the overall energy efficiency of the pneumatic rock drilling system is less than 10%

In addition, the equipment and facilities of the pneumatic rock drilling system are huge, the consumption of steel for manufacturing and installation is large, the investment and operation and maintenance costs are large, and the air compression station of the pneumatic power system also has safety production problems such as vibration, noise and pressure vessels.

The internal combustion piston impact equipment uses the piston internal combustion engine directly as the impact equipment on the pile driver and small rock drill, and directly performs the impact work when the piston is in the stroke movement, which has problems such as exhaust pollution, noise, large volume and self-contained fuel.

Another disadvantage of piston impact equipment is that the higher the impact frequency, the lower the energy efficiency. Impact frequency is an important performance of impact equipment. , increasing the impact frequency can improve work efficiency

The electric impact equipment directly uses the power supply, the power is single, and it is easy to use. It does not need to use special equipment for secondary conversion of the power. However, the current electric impact equipment is all motor-type, which converts the motor's rotational motion into a reciprocating linear motion. For impact work, the speed at which rotational motion becomes reciprocating linear motion is a sinusoidal curve, and the second half of the motion is decelerated until it reaches zero, which does not meet the requirements of impact work. It is necessary to use a special transmission mechanism to convert the reciprocating linear motion of the sinusoidal curve Transformed into a free reciprocating linear motion, the structure is more complicated, there are more wearing parts, and it also increases energy loss, which restricts the development and application of the current motor-type impact equipment

[0003] At present, although the overall energy efficiency of pneumatic and hydraulic piston impact equipment is very low, the technology is mature and there is no advanced product that can replace it. Pneumatic and hydraulic impact equipment has always been the leading equipment in impact equipment

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