The structure and characteristic of the transmission

Transmission is made of two parts that variable speed drive mechanism and variable speed operation mechanism, can be made into a separate variable speed mechanism or and drive mechanism in the same casing. Variable speed drive mechanism main function is to change the numerical value and direction of torque and rotational speed; Operation mechanism main function is to control the drive mechanism, realize transmission velocity ratio of transformation, namely the realization of shift.

Transmission mechanism mostly uses the ordinary gear drive, also uses planetary gear transmission. Ordinary gear shifting mechanism uses slip gear and clutch. Slip gear has multi-slip gear and dislocation slip gear. Use multi-slip gear variable speed, axial dimension is big; use dislocation slip gear variable speed, compact structure, but the transmission ratio changes little. Clutch has mesh type and friction type. Use mesh type clutch, variable speed should go ahead in park or rotational speed difference is very small. Use friction clutch can be variable speed under any speed difference in operation, but the capacity is small, and can not guarantee two shafts strictly synchronous. At the mesh type clutch installs friction plate, when variable speed first by friction plate driven wheel after to the synchronous speed then to joint. As a result, can overcome shortcoming of two shafts can’t synchronic.

Simple transmission has efficiency high, simple structure, use convenient, etc. advantages; but gear number less, variation range is small, only appropriate in certain gear number is not much use in the car. If the increase scope, makes the transmission size increases, shaft span increases. If use integrated transmission, can increase the gear number and don’t make shaft span is too large.

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Power head during the operation, what details should pay attention?

Abstract: Power head is motor drives a gear shifting mechanism, can be boring, milling, drilling, etc functions machinery equipment.
  Power head is relatively simple one variable transmission mechanism, a variety of forms, the basic principle is the motor drives a gear shifting mechanism, can be boring, milling, drilling, and other functions, some with a guide rail operation, Power head job operating procedures are:
1, the working process of operating personnel is not allowed to leave the job.
2, oil pressure system oil-way should be tight, smooth, oil pressure, oil mass and oil temperature should be kept within the specified range.
3, when the low winter temperatures, should start the machine idling, standby oil dissolves before work.
4, when two persons operating a machine tool, should be a clear division of labor by a person responsible for directing, work must be prepared prior to contact.
5, when workpiece loading and unloading heavy, there should be others or lifting mechanics to cooperate.
6, it is strictly prohibited in the machine tool that runs the above delivery tool, jigs and other articles or direct touch the workpiece.
7, prohibited by hand stained cotton yarn cooling liquid cooled rotating workpiece or tool.
8, leftover material on the machine and shear under sporadic forbidden by hand to remove, tangle on the tool or workpiece on the ribbon to use iron hook knife cuttings must be cleared, must stop when clear.
9, when operating the machine tool, must not be used a tripod on the machine tool or lean against the machine tool.
10, when the inspection precision, measurement size, proofreading die cut mouth or job change position or machine must stop when abnormal noise.
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