Novel hydraulic control system of hydraulic tensioning device

Abstract

The invention relates to a hydraulic control system of a hydraulic tensioning device for a belt conveyer, and belongs to the technical field of belt conveyer equipment. On the basis of the original structure, the hydraulic control system further comprises a pressure increasing valve (8), a tension sensor (16), a force measuring oil cylinder (17), a two-position two-way electromagnetic directional valve (23) and a throttling valve (24). According to the hydraulic control system, multiple pressure measuring components are arranged so as to conduct pressure measurement, detection values of the components are compared so that the detection elements breaking down can be distinguished, and accuracy of the detection values is guaranteed; furthermore, the two-position two-way electromagnetic directional valve and the throttling valve are connected in series to replace an original electric-hydraulic proportional overflow valve so as to control increase and decrease of pressure, cost is lowered, meanwhile, it is guaranteed that tensile force can be enlarged along with work requirements, pneumatic performance of the system is ensured, a belt is prevented from slipping, and work efficiency is improved.

Description

technical field [0001] The invention relates to a hydraulic control system, in particular to a hydraulic control system of a hydraulic tensioning device for a belt conveyor, which belongs to the technical field of belt conveyor equipment. Background technique [0002] Belt conveyors, also known as belt conveyors, are widely used in various industries such as home appliances, electronics, electrical appliances, machinery, tobacco, injection molding, post and telecommunications, printing, food, etc., for the assembly, testing, debugging, packaging and transportation of objects. [0003] Most of the current hydraulic tensioning devices for belt conveyors are hydraulic control systems, but they have the following defects: First, when starting and belt slipping, the pressure boost in the front chamber of the tensioning hydraulic cylinder cannot be higher than the system set pressure. Second, the pressure detection is relatively simple, and the pressure detection element is instal...

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Problems solved by technology

[0003] Most of the current hydraulic tensioning devices for belt conveyors are hydraulic control systems, but they have the following defects: First, when starting and belt slipping, the pressure boost in the front chamber of the tensioning hydraulic cylinder cannot be higher than the system set pressure. Second, the pressure detection is relatively simple, and the pressure detection element is installed on the pipeline connected to the front cavity of the tensioning cylinder for detection, which is prone to detection errors and cause system malfunctions; third, the electro-hydraulic proportional relief valve is used to control the pressure rise and fall, more expensive

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