A two-mass near-resonance sieve with sieve frame and sieve bed separated

Abstract

The invention discloses a screen frame and screen bed separated double-plastid near resonance screen which comprises a screen bed (1) and a screen frame (2), wherein main vibration springs (6) are arranged between the screen bed (1) and the screen frame (2); the screen bed (1) is mounted on the ground by isolation springs (8); exciting vibration motors (9) are mounted on the screen frame (2); the screen frame (2) consists of side plates (3) and transverse beams (4); the main vibration springs (6) are arranged between connecting seats (5) of the side plates (3) and the screen bed (1); and the exciting vibration motors (9) are mounted on the transverse beams (4). The double-plastid near resonance screen has the benefits that the screen frame serves as an exciting vibration body, so that the double-plastid near resonance screen has no extra metal consumption, and a purpose that totally consumed steel is reduced greatly under the same design function parameter; the screen frame serves as an exciter, so that the vibration strength is less, and the structural strength is high in reliability; the double-plastid near resonance screen is designed based on a principle of double-plastid near resonance, and is a large-scale rectilinear vibration screen; the power consumption is less; and an impact of equipment on a foundation is smaller.

Description

Technical field [0001] The invention relates to the technical field of vibrating screening devices, in particular to a double-mass near-resonant screen with a screen frame and a screen bed separated, which is a large linear vibrating screen. Background technique [0002] Large linear vibrating screens are widely used in screening of various materials. The most commonly used screen bed has an effective area of ​​3m×7.2m. Large-scale linear vibrating screens have large lateral spans, heavy equipment, require greater power, and require high structural strength. Its common structure is to install the motor on the ground or on a fixed support, and transmit the power to the eccentric vibration device installed on the screen box through the transmission device. The two sets of eccentric devices are synchronized by mechanical connection. [0003] For small and medium linear vibrating screens, two excitation motors with eccentric blocks can be directly installed on the beam of the screen b...

AI Technical Summary

Problems solved by technology

In the near-resonance screen, the screen box is a plastid in the double-mass structure, and the other plastid is only an additional structure to achieve near-resonance, which increases the cost of the device

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