Soft start gearcase

Abstract

The invention provides a soft start gearcase, which comprises a case body, a gear drive assembly, a clutch assembly, a lubricating system, a hydraulic control system and a cooling system, wherein the gear drive assembly and the clutch assembly are arranged inside the case body, the lubricating system and the hydraulic control system are arranged outside the case body, and the cooling system is connected with the case body through an oil pipeline. The soft start gearcase disclosed by the invention can achieve no-load start of a motor under the working condition of high-power transmission and arbitrary control over starting time and starting characteristic; the hydraulic control system and an electric system are effectively combined, therefore the clutch assembly can be accurately controlled and multipoint drive power balance is achieved; a gear drive operating oil pool and an oil tank of the hydraulic system are separated so as to avoid frequent machine halt for replacing hydraulic parts because metal scraps formed by gear meshing enter the hydraulic system; and in addition, due to adoption of an oil tank separation mode, the lubricating oil replacement frequency can be greatly reduced and the equipment operating cost is lowered.

Description

Technical field [0001] The invention relates to the field of industrial power transmission, in particular to a soft start gearbox. Background technique [0002] For the occasion of starting with load under high power transmission conditions, if the motor is directly started, the starting time is completely determined by the characteristics of the motor. Generally, the starting time of the motor is short, which is likely to cause a large instantaneous impact, which not only affects or even Damage to the motor; especially for high-power long-distance belt transmission systems, starting shocks can easily cause serious accidents such as belt breaks and frame damage. The soft start equipment currently used mainly includes variable frequency motors, hydraulic couplings, liquid viscous soft start devices, etc., but such soft start equipment is installed on the high-speed shaft end of the transmission system, and responds slowly to changes in the load at the low-speed end, and has contro...

AI Technical Summary

Problems solved by technology

[0004] 1. The structure of the planetary transmission is complex, the reliability is low, and the probability of failure is high;

[0005] 2. During work and operation, once a gear has a broken tooth fault, because the broken tooth fragments are not easy to get out of the planetary transmission structure, it will run together with the gear in the ring gear and squeeze with all the gears, and finally cause damage to all gears;

[0006] 3. The manufacturing of planetary transmission parts is difficult, the assembly process is complicated, and the manufacturing cost is high;

[0007] 4. Although the structure is compact, the transmission ratio range is limited. If the transmission ratio needs to be increased, the size will be greatly increased

[0008] 5. All lubricating oils share one oil tank, causing mutual pollution, affecting the reliability of the hydraulic system, causing frequent shutdowns to replace hydraulic parts, and the frequency of lubricating oil replacement, high operating costs

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