FIELD: transport.;SUBSTANCE: invention relates to lift-and-carry equipment and is intended for increasing crane capacity. Mobile crane comprises bearing frame with rotary jib lifter and towing coupler with towed trailer coupled therewith in working conditions. Sais trailer is coupled with running frame...
For the rower crane simulation system, a lifting path tracking system and an object model for a tower crane are developed. We proposed a variation of the relative measurement method in GPS, which uses a pair of regular GPS, and tested the precision of the proposed system in various ...
A portable vinyl lifting crane with a nip roller drive system that feeds a preferred flat rope between the rollers for traction to achieve two primary functions. One function enables the hoist to climb itself up to a structure by securing one end of a preferably flat rope to a support beam...
The invention discloses the method and a device for verifying the lifting capacity signal of the tower crane. Verification of the lifting capacity signal, and display, alarming and recording functions of the verified conclusion are achieved by a real-time measurement module of the top inclination ...
FIELD: mechanical engineering; load-lifting and transporting facilities.;SUBSTANCE: according to proposed method, drives of mechanisms providing operation of crane equipment are started and cut off by action onto crane controls. In proposed method, use is made of wire rope angular position sensor. Ho...
A support structure for supporting a lift crane, and in particular to a lift crane jack-up structures, including rigs, platforms, barges, boats or the like, wherein the lift crane is positioned about a leg of the jack-up structure atop the jack-house. The preferred embodiment of the prese...
PROBLEM TO BE SOLVED: To provide a method for controlling an electric cable reel for feeding a crane lifting sling, preventing damage to a feeder cable and the electric cable reel, by previously preventing application of supporting force of the lifting sling on the feeder cable due to the defl...
Method and device for compensating crane boom deformation in load lifting and placing The present invention relates to a device and method for controlling, or compensating for, the deformation of a crane boom (1) in lifting or placing a load (2). The deformation of a crane boom (1) is de...
A stepless luffing mechanism for the super-lifting counterweight of a crawler crane, and an operating method thereof. The luffing mechanism includes a main luffing mast, a lifting oil cylinder, a luffing structure and a pulling board for the counterweight, and a super-lifting mast. The cylinder...
The method was applied to real cases, in particular to two types of lifting mobile machines. It was validated following several outdoor tests on two mobile machines where experimental data were obtained. During tests, both machines were equipped with a set of seven different performance LHV ...