A cylindrical self-balancing eccentric shaft for jaw crusher

Abstract

The invention discloses a cylinder type self-balancing eccentric shaft. A center line of a connecting guard in the eccentric shaft is originally arranged together with a center line of eccentric bearing guards in the same direction (or coincides with a rotary center line) but is currently arranged in the opposite directions, and self-balancing of the eccentric inertia spin moment of the eccentric shaft is achieved by utilizing the opposite eccentric inertia moment balance principle. The eccentric inertia spin moment of the eccentric shaft in the prior art is self-balanced by the interior of the eccentric shaft instead of original external flywheels, thus eccentric balance weights on the external flywheels can be omitted. The cylinder type self-balancing eccentric shaft has high balance precision and a simplified structure, is easy to detect and control, reduces the manufacturing cost of equipment and saves the operating cost.

Description

technical field [0001] The invention relates to the technical field of jaw crushers, in particular to a cylindrical self-balancing eccentric shaft for jaw crushers. Background technique [0002] Jaw crusher, commonly known as jaw crusher, is one of the oldest and most widely used crushing equipment. The eccentric shaft is the core part of the jaw crusher equipment. The jaw plate in the jaw crushing pair is tightened and loosened when crushing materials, which comes from the eccentric design of the eccentric shaft. [0003] Prior art eccentric shafts have two centerlines (see figure 1 ): ① Rotation center line, that is, the center line where the axes of the concentric bearing gear, locking gear and reference gear are located; ② Eccentric center line, that is, the center line where the axes of the eccentric bearing gear and the connecting gear are located. The working mechanism of the eccentric shaft is: when the motor is connected with the flywheel on the reference gear thr...

AI Technical Summary

Problems solved by technology

[0005] The method of solving eccentric vibration in the above-mentioned prior art has the following deficiencies: ① It is necessary to add a pair of heavy flywheels and add eccentric balance weights on the flywheels, which complicates the mechanism of the jaw crusher and increases the manufacturing cost and power consumption in operation; In equipment manufacturing, it is difficult to detect the accuracy of its moment of inertia balance (eccentric vibration will occur if the weight of the eccentric block is insufficient or exceeds, and if there is an error in the eccentric orientation), so the balance of general jaw crusher products is not tested before leaving the factory.

It is also because of this that the eccentric vibration of the existing jaw crusher in use will cause fatigue damage to related parts and reduce its service life. Among them, the screws connecting the crusher and the stand are easy to break and need to be replaced frequently; the eccentric moment of inertia increases Dissipates power and generates noise due to vibration

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