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Harbor crane anti-seismic device employing sliding pin shaft

A port crane and sliding pin technology, which is applied to traveling bridge cranes, cranes, hoisting equipment braking devices, etc., can solve problems such as inability to adapt to changes in gauge, and achieve the effect of ensuring stability and avoiding damage.

Inactive Publication Date: 2010-08-18
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the rigid support leg spacing cannot adapt to gauge changes

Method used

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  • Harbor crane anti-seismic device employing sliding pin shaft
  • Harbor crane anti-seismic device employing sliding pin shaft

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Embodiment Construction

[0016] The present invention is further illustrated below by means of embodiments in conjunction with the accompanying drawings.

[0017] Referring to Fig. 1 , the present invention is an anti-seismic device for a port crane. Usually, the lower beam 2 of the crane and the balance beam 5 of the cart are connected by a pin shaft, and the balance beam 5 of the cart has only one degree of freedom of rotation relative to the lower beam 2 . The present invention adopts the sliding pin shaft 12 arranged at the hinge point of the crane cart support 4 and the cart balance beam 5 to provide the required degree of freedom for resisting earthquakes. The whole system consists of sliding device, trigger device, damping device and recovery device.

[0018] The invention increases the degree of freedom of the pin shaft, and is provided with a sliding device, a trigger device, a damping device and a restoring device.

[0019] Fig. 2 is A-A sectional view among Fig. 1, and sliding device is ma...

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PUM

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Abstract

The invention belongs to a mechanical structure technology field, particularly relates to an anti-seismic device of a port crane using a sliding pin. The invention consists of a lower beam, a cart bearing, a cart balance beam, a sliding device, a triggering device, a damping device and a resetting device. The sliding device consists of a sleeve and a sliding pin. An external surface of the sliding pin is provided with a polytetrafluoroethylene coating; the sliding pin is fixed on an upward side of the cart balance beam; the sleeve is respectively sleeved on two ends of the sliding pin and is connected with the cart bearing though a bolt; the hydraulic oil is arranged between a void formed by the sliding pin and the sleeve; the triggering device consists of a hydraulic accumulator, a caliper disc brake, a seismograph, a seismic signal transmitter and a wheel brake. The damping device consists of a damping hole which is axially through the sliding pin. The resetting device consists of aspring divided into two groups which are respectively sleeved on the two ends of the sliding pin and are positioned between the cart balance beam and the cart bearing. The anti-seismic device of the invention can limit the amplitude the crane swings, prolong natural period of the crane and lessen as well as resist influence of the seismic force.

Description

technical field [0001] The invention belongs to the technical field of mechanical structures, and in particular relates to an anti-seismic device of a port crane using a sliding pin. Background technique [0002] The vast majority of major ports in the world are located in the crustal plate fault zone of the coastline around the Pacific Ocean, and various port facilities are always threatened by earthquakes. For example, in January 1995, a central earthquake of magnitude 7 occurred in the southern part of Hyogo Prefecture, Kobe, Japan, causing devastating damage to Kobe Port. The port, which should have been the lifeline of maritime logistics for post-disaster reconstruction, lost its function. How to prevent or reduce the damage to port cranes caused by earthquakes has become an important issue that crane users and manufacturers urgently need to research and develop. [0003] According to the survey, the main reasons for the damage to port cranes caused by the earthquake a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C15/00B66C5/02B66C17/20
Inventor 归正邱惠清卢凯良周业凯
Owner TONGJI UNIV
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