Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Stern hydraulic rudder installing walking trolley

A walking trolley and hydraulic technology, which is applied in the direction of hoisting devices, lifting frames, etc., can solve the problems of asymmetric wheelbase and wheelbase, unreliable stability, and differences in the rising or falling speed of four hydraulic cylinders, etc., to achieve Effects of improving safety and adaptability, ensuring consistency and stability, and improving convenience and safety

Inactive Publication Date: 2011-09-07
SHANGHAI JIAO TONG UNIV
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are several problems in this prior art: (1) because the traveling trolley is a unequal-sided rectangle, the track and wheelbase of the rolling wheels below are asymmetrical. Correspondingly readjusted according to wheelbase and wheelbase, and brings unreliable factors to the stability when moving
(2) The 90° rotation of the scroll wheel under the workbench is done manually. When the workbench platform is switched from lateral movement to longitudinal movement, since several scroll wheels are driven by hydraulic motors respectively, if the scroll wheel rotates 90°, the hydraulic pressure will be caused. If the rotation direction of the motor is inconsistent, the movement of the workbench platform will cause great problems and dangers, and the manual operation guarantee is unreliable
(3) The four hydraulic hydraulic cylinders at the four corners of the trolley are controlled by a set of oil circuits to rise or fall synchronously. On the one hand, the length of the oil path (via) from the oil pipe to each hydraulic cylinder after the control valve is different, resulting in The difference in oil pressure loss will inevitably cause the difference in the rising or falling speed of the four hydraulic cylinders. On the other hand, the load of the traveling trolley is very uneven, and the large and small loads cause the difference in the rising or falling speed of the hydraulic cylinders. The difference in rising or falling displacement, when serious, the worktable will be seriously tilted, which will greatly cause installation safety problems, and the rudder blade and propeller must be installed with a certain degree of precision, and serious tilting will increase the difficulty of installation
(4) lifting stand is installed on the movable sliding platform of both sides of walking dolly, when rudder blade is installed, because rudder blade is complex spiral shape, often down big and up small, the stand of prior art is straight stand , when the operator installs on the hull above the rudder blade, the upper end must be installed on the stand to install the scaffolding for operation, and a springboard is added, which is time-consuming and unsafe

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stern hydraulic rudder installing walking trolley
  • Stern hydraulic rudder installing walking trolley
  • Stern hydraulic rudder installing walking trolley

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0033] Such as Figure 1 to Figure 4 As shown, this embodiment includes: a main platform 1, a scroll wheel 2, a pair of plane slides 3 and their corresponding installation stands 4, wherein: two plane slides 3 are respectively movably arranged on the left and right sides of the main platform 1 The rolling wheels 2 driven by four hydraulic motors 5 are respectively fixedly arranged on the four top corners below the main platform 1 , and the installation stand 4 is respectively fixedly arranged on the corresponding flat slide table 3 .

[0034] Such as figure 2 with image 3 As shown, the upper end surface of the...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a stern hydraulic rudder installing walking trolley in the shipbuilding technical field. The walking trolley comprises a main platform, rolling wheels, a pair of plane sliding tables and corresponding installation floor stands, wherein the two plane sliding tables are respectively and movably arranged at the left and the right sides of the main platform; the rolling wheelsdriven by four hydraulic motors are respectively and fixedly arranged at four vertex angles under the main platform; and the installation floor stands are respectively and fixedly arranged on the corresponding plane sliding tables. The walking trolley disclosed by the invention meets the installation requirements on the ship rudder blade and the screw propeller, improves the installment efficiency, avoids potential safety hazards, shortens the using period of the unit ship and improves the shipbuilding efficiency.

Description

technical field [0001] The invention relates to a device in the technical field of shipbuilding, in particular to a traveling trolley for installing hydraulic propellers and rudders at the stern of a ship. Background technique [0002] With the development of shipbuilding technology, the same period of shipbuilding, construction quality, and construction safety have been greatly improved. The tonnage of ships is showing a trend of increasing development. The types of ships are increasing, and there is an urgent need for reliable, safe, stable and simple construction equipment. . Ship rudder blades and ship propellers are the main components of ships. They are characterized by large volume and mass, and the maximum mass exceeds 100 tons per piece. Due to restrictions, large slipways or dock door cranes cannot be used for installation. [0003] Prior art has two kinds, and a kind of is to adopt original simple method. First, weld several hanging codes of cranes on the hull ...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B66F7/20
Inventor 张轲金鑫吴永强涂宝新杨海澜石忠贤俞海良
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products