A static trim device for a centrifuge

Abstract

The invention discloses a novel centrifugal machine static balancing device. The novel centrifugal machine static balancing device comprises a balancing frame, a lead screw, a movable balancing weight, a motor, a rotary transmission device and a traveling nut. A connecting hole is formed in the first end of the balancing frame, and a fixed balancing weight is installed at the second end of the balancing frame. Two guide rails are arranged on the upper surfaces of the two sides of the balancing frame in parallel respectively. The two ends of the movable balancing weight are installed on the two guide rails respectively and can be moved. The motor is installed on the movable balancing weight. A rotary shaft of the motor is connected with the input end of the rotary transmission device. The output end of the rotary transmission device is connected with the traveling nut. The lead screw is sleeved with the traveling nut. The two ends of the lead screw are fixedly installed at the two ends of the balancing frame respectively. Through the combination of the movable balancing weight and the fixed balancing weight, the novel centrifugal machine static balancing device has the advantages that machining is easy due to modular design, the balancing range is wide, the application range is wide, and operation is easy.

Description

technical field [0001] The invention relates to a centrifuge static trim device, in particular to a centrifuge static trim device with modular design, large trim range and simple operation. Background technique [0002] As an important part of the centrifuge, the static trim device directly affects the stability, safety and service life of the centrifuge. At present, some domestic centrifuges adopt long and short arm structures, the long end is used to install the test piece, and the short end is used to install a large mass counterweight to ensure equal torque at both ends. The short arm and the counterweight are static balancing devices. Most of these centrifuges with long and short arm structures use a fixed counterweight balancing method, that is, based on the principle of moment balance, a counterweight of a specific mass is installed on the end of the short arm to achieve balance. Due to the limited specifications of the counterweights, the combination of counterweigh...

AI Technical Summary

Problems solved by technology

This electric structure greatly improves the accuracy of trimming and reduces the complexity of operation. However, this structure uses a long annular synchronous belt to drive two nuts at the same time, which will easily cause uneven force on the synchronous belt and increase the The probability of damage to the synchronous belt requires regular replacement of the synchronous belt, and the operation of replacing a longer synchronous belt is more complicated, which increases labor and material costs; in addition, because the lead screw of the synchronous belt moving trim structure is the tensile force of the circular section of the arm belt, so it can only be used in centrifuges with circular section of the pull belt of the rotating arm, so the application range is limited

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