Harrow-suction type dredging head breaking ground by high-frequency small-amplitude mechanical oscillation

Abstract

Belonging to the field of water conservancy project technology, the present invention relates to a drag suction type dredging head which depends on high-frequency mechanical micro-vibration to break soil. The present invention consists of a high-frequency mechanical micro-vibration source, a scraper or drag tooth, a drag head ladder, a mud-sucking tube, a movable cover and regulating shafts, wherein, according to the moving direction of a dredge, the high-frequency mechanical micro-vibration source is arranged in front of the sucking mouth of the mud-sucking tube, the mud-sucking tube is arranged behind the high-frequency mechanical micro-vibration source and utilizes a mud pump to transfer mud into the mud bin of the dredge, the scraper or the drag tooth are arranged behind the high-frequency mechanical micro-vibration source and the sucking mouth of the mud-sucking tube, the movable cover is arranged on the drag head ladder, the regulating shafts arranged on the drag head ladder are connected with the movable cover, and an anti-collision pier is respectively arranged beside each regulating shaft and is firmly arranged on the drag head ladder. The implementation of the technology of the present invention is simple, the present invention can be applied to the dredging of not only underwater mud with low compaction and hardening force but also underwater mud with high compaction and hardening force, the standard blow number is five to fifteen and can be up to the maximum of twenty six, the equipment cost is low and the dredging efficacy of the dredge is high.

Description

technical field [0001] The invention relates to a dredging head in the technical field of water conservancy engineering, in particular to a drag suction type dredging head which relies on high-frequency micro-amplitude mechanical vibration to break soil, and can be used in dredging and other industries. Background technique [0002] Land reclamation and maintenance of port waterways often encounter dredging problems, and when the seabed / river bed is composed of clayey silt and silt, iron sand is formed, which is often difficult to excavate. The dredging industry urgently needs to develop a new type of ground-breaking dredging device. [0003] Found through the retrieval of prior art document, the application (patent) number that is closest to the present invention at present: 200510082931.1, name: a kind of vibratory dredging head and application device thereof, publication (announcement) number: CN1696419, publication (Announcement) date: 2005.11.16, the invention disclose...

AI Technical Summary

Problems solved by technology

The main disadvantages of the present invention are: the wear and tear of the reamer is large, so the required protection cost is high, and the efficiency of breaking the soil of the reamer is low, and the soil is often cut into blocks, resulting in high resistance during pipeline transportation; the vibration of the eccentric block The vibration frequency of the machine is usually small. At present, the vibration frequency of foreign molding machines is generally 0 times / minute to 3600 times / minute. According to experimental research, the excitation frequency is too low, and the soil-breaking effect is poor.

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