Combination type pulley for arm support of portal hoist, maintaining and installing technique thereof

An installation process and combined technology, which is applied to portable hoisting devices, hoisting devices, mechanical equipment, etc., can solve the problems of long downtime, waste, and poor wear resistance of pulley rope groove rings, etc., and improve production efficiency , improve the utilization rate, easy maintenance effect
CN100400933CInactive Publication Date: 2008-07-09NO 4 WATER TERMINAL CORP TIANJIN PORT
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NO 4 WATER TERMINAL CORP TIANJIN PORT
Publication Date
2008-07-09
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides the combined pulley for arm support of portal hoist and its maintenance. It is characterizes in that the pulley slot ring jointly welded by two semi-circle pulley slot rings is on the outside end face of the assistant boards of the hub, and the reinforcing rib is welded at the splicing place of the pulley slot ring and the assistant boards; or equip the connecting boards and the tightening bolts at the inside circumference of the splicing place, and the clamping board and the tightening bolts are welded at the two sides of the slot ring. The invention has simple structure and materials, which shortens the maintaining time and improves the working efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a guide pulley used on the arm frame system of a door crane for loading and unloading goods in ports and wharves, in particular to a combined pulley used for the arm frame of a door crane and its maintenance and installation process. Background technique

[0002] The door crane is the main equipment for loading and unloading goods in ports and wharves. The guide pulleys on the arm frame system of the M10t-30m gantry crane produced by Shanghai Port Machinery Factory in the 1980s are fixed in the "serial shaft" connection form, and each guide pulley adopts the "groove cold-rolled welded pulley" structure . Although this kind of pulley has the advantage of light weight, the wear resistance of the pulley groove ring is poor, so when the pulley groove ring is worn out, the whole pulley needs to be replaced, resulting in waste; A through shaft is used to string together the three parts of the elephant trunk beam, pull rod and pulle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More