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104 results about "Weight machine" patented technology

A weight machine is an exercise machine used for weight training that uses gravity as the primary source of resistance and a combination of simple machines to convey that resistance to the person using the machine. Each of the simple machines (pulley, lever, wheel, incline) changes the mechanical advantage of the overall machine relative to the weight.

High-speed main shaft complete machine intelligent dynamic balance device

The invention discloses a high-speed main shaft complete machine intelligent dynamic balance device which comprises a main shaft system fixed connecting part, a rotor automatic clamping and rotating part, a laser automatic aligning and de-weighting part and an unbalance detecting part. A high-speed main shaft of the main shaft system fixed connecting part is fixed to a main shaft positioning base. A vibration testing core bar is installed at the front end of the main shaft. A pneumatic claw of the rotor automatic clamping and rotating part can automatically clamp the vibration testing core bar and can be fixedly connected with a torque motor. The laser automatic aligning and de-weighting part comprises a positioned light source, a de-weighting machining light source and a position sensitive device. A balance weight disc is installed at the tail end of a main shaft rotor. The unbalance detecting part comprises an acceleration sensor, a displacement sensor, a phase demodulation sensor and an industrial computer for computing the unbalance amount. Compared with a traditional dynamic balancing device, the high-speed main shaft complete machine intelligent dynamic balance device has the advantages that no manual interference is needed, the main shaft does not need to be detached, the rotor is driven by a matched variable-frequency device, the actual working conditions are easily simulated, and the dynamic balance accuracy and efficiency are effectively improved.
Owner:XIDIAN UNIV
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