CN211228046U

CN211228046U - Trestle structure for telescopic trestle system

Info

Publication number: CN211228046U
Application number: CN201921941731.0U
Authority: CN
Inventors: 胡贯勇; 严兵; 蔡东伟; 孔祥川; 张炳发; 徐林
Original assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-11
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a trestle structure used on a telescopic trestle system, which comprises a trestle fixed truss and a telescopic mechanism connected with the trestle telescopic truss through the bottom of the trestle fixed truss, wherein the trestle fixed truss comprises four fixed truss girders arranged horizontally, the front and rear ends of the trestle fixed truss are connected through a fixed truss connecting frame to form a rectangular cross section, and two adjacent fixed truss girders are connected through a plurality of fixed truss connecting beams; the trestle telescopic truss comprises four telescopic truss main beams arranged horizontally, the front end and the rear end of each telescopic truss main beam are connected through a telescopic truss connecting frame to form an arrangement with a rectangular section, and two adjacent telescopic truss main beams are connected through a plurality of telescopic truss connecting beams; trestle fixed truss and trestle telescopic truss are made of metal section bars, and the metal section bars comprise outer section bars and inner section bars arranged inside the outer section bars. The utility model discloses structural design and the preparation degree of difficulty can be simplified, the ability of utilizing the section bar press adapts to the intensity requirement of multiple sea condition.

Description

Trestle structure for telescopic trestle system

Technical Field

The utility model relates to a landing stage equipment, more specifically say, relate to a landing stage structure for on telescopic landing stage system.

Background

With the high-speed development of offshore wind power and oil exploitation industries, personnel alternation and maintenance personnel for offshore projects such as drilling platforms, FPSOs and wind power installations get on and off the ship, and traditionally, a cage, a ship side inclined ladder, a helicopter and the like are adopted for getting on and off the ship. But the problem of insufficient safety of the suspension cage is increasingly revealed, the ship side inclined ladder is influenced by wind and waves, the limiting conditions are too much, and the economy of the helicopter is too low. Therefore, the telescopic trestle system is very necessary to be applied, not only solves the problem of safe transportation of personnel under the severe sea condition on the sea, but also can provide transportation of electricity, water, oil and slurry.

As shown in fig. 1, one end of the telescopic trestle 100 is fixedly installed on a supporting platform or a supporting ship 200, and the other end is erected and fixed on or contacted with a target platform or a ship 300 through a telescopic mechanism, so as to form a channel, and the telescopic trestle 100 is formed by welding aluminum alloy profiles of various specifications. The aluminum alloy section bar that uses at present adopts the rectangular section bar form mostly, and this section form is because intensity is not enough, and the section bar side still need the welded plate reinforcement, and the main problem of this kind of scheme is:

1) the strength of the aluminum alloy section is reduced due to multiple welding;

2) because the flitch is strengthened outside the structure for the section bar welding seam of stack from top to bottom is sheltered from, and the defect is difficult to discover, restores the difficulty, easily causes the incident.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect that exists among the prior art, the utility model aims at providing a landing stage structure for on telescopic landing stage system utilizes the ability of section bar press, and structural design and the preparation degree of difficulty, the intensity requirement of adaptable multiple sea condition can be simplified to the mechanical properties in reinforcing section bar cross-section.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a trestle structure used on a telescopic trestle system comprises a trestle fixed truss fixedly arranged on a supporting platform or a supporting ship, and a trestle telescopic truss which is connected to the bottom of the trestle fixed truss through a telescopic mechanism and is used for erecting and fixing or contacting the trestle telescopic truss on a target platform or a ship;

the trestle fixing truss comprises four fixing truss main beams arranged horizontally, the front ends and the rear ends of the four fixing truss main beams are connected and fixed through fixing truss connecting frames, so that the four fixing truss main beams are arranged with rectangular sections, two adjacent fixing truss main beams are connected through a plurality of fixing truss connecting beams, and the front ends and the rear ends of the four fixing truss main beams are arranged in an open structure;

the trestle telescopic truss comprises four telescopic truss main beams arranged horizontally, the front ends and the rear ends of the four telescopic truss main beams are connected and fixed through telescopic truss connecting frames, so that the four telescopic truss main beams are arranged with rectangular sections, two adjacent telescopic truss main beams are connected through a plurality of telescopic truss connecting beams, and the front ends and the rear ends of the four telescopic truss main beams are arranged in an open structure;

the bottom of the fixed truss main beam is connected with the bottom of the telescopic truss main beam through the telescopic mechanism;

the trestle fixed truss and the trestle telescopic truss are both made of metal profiles, and each metal profile comprises an outer profile and an inner profile arranged inside the outer profile;

the outer section is in a hollow tubular shape, and the cross section of the outer section is rectangular or circular;

the inner section is in a hollow tubular shape, and the cross section of the inner section is in a diamond shape.

Four angles of the rhombus shape of the inner section are formed on the inner side wall of the outer section by extrusion welding.

The metal section is an aluminum alloy section.

In the technical scheme, the utility model provides a landing stage structure for on telescopic landing stage system still has following several beneficial effect:

1) the trestle structure of the utility model can utilize the capability of the section bar press to the maximum extent, enhance the mechanical property of the section bar section, and can adapt to the strength requirements of various sea conditions;

2) the trestle structure of the utility model simplifies the difficulty of the structural design and the manufacture of the prior truss;

3) the variable cross-section size of the trestle structure of the utility model is suitable for trestles of different length series;

4) the utility model discloses section bar forms the in-process among the landing stage structure, and the face of weld of the extrusion in-process of inside and outside section bar can be adjusted as required, welds four angles of inside section bar in four angles of outside section bar or the central wait position on four sides.

Drawings

FIG. 1 is a schematic diagram of a prior art telescoping trestle system;

fig. 2 is a schematic view of the trestle structure of the present invention;

FIG. 3 is a top view of the trestle structure of FIG. 2;

FIG. 4 is a schematic view in the direction A-A of FIG. 2;

fig. 5 is a schematic cross-sectional view of a single profile of fig. 4.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Please refer to fig. 2 to 5, the present invention provides a trestle structure for a retractable trestle system, which comprises a trestle fixed truss fixedly mounted on a support platform or a support ship, and a telescopic mechanism connected to the bottom of the trestle fixed truss for erecting a trestle telescopic truss fixed or contacted on a target platform or a ship. Different from the prior art:

the better, trestle fixed truss is including four levels to the fixed truss girder 1 that sets up, four the preceding, the rear end of fixed truss girder 1 link to each other fixedly through fixed truss link 2, make four fixed truss girder 1 forms the setting that the cross-section is the rectangle, adjacent two link to each other through a plurality of fixed truss tie-beams 3 between the fixed truss girder 1, four the preceding, the rear end of fixed truss girder 1 are open structure setting for the installation trestle truss that stretches out and draws back.

The better, landing stage telescopic truss is including four levels to the telescopic truss girder 4 that sets up, four the preceding, the rear end of telescopic truss girder 4 link to each other fixedly through telescopic truss link 5, make four telescopic truss girder 4 forms the setting that the cross-section is the rectangle, adjacent two link to each other through a plurality of telescopic truss tie-beams 6 between the telescopic truss girder 4, four telescopic truss girder 4's preceding, rear end are open structure setting.

Preferably, the bottom of the fixed truss main beam 1 is connected with the bottom of the telescopic truss main beam 4 through the telescopic mechanism.

Preferably, the trestle fixing truss and the trestle telescopic truss are made of aluminum alloy sections, and each aluminum alloy section comprises an outer section 7 and an inner section 8 formed inside the outer section 7 in an extrusion welding mode.

Preferably, the outer section bar 7 is a hollow tube, and the cross section of the outer section bar is rectangular, square or circular.

Preferably, the inner section bar 8 is also in the shape of a hollow tube, and the cross section of the inner section bar is in the shape of a diamond.

Preferably, the four rhombus-shaped corners of the inner section bar 8 are connected to the inner side wall of the outer section bar 7 through extrusion welding molding, so that the whole section of the aluminum alloy section bar is rectangular in the outer arrangement, and a corresponding rhombus-shaped combination body is arranged in the inner arrangement, thereby simplifying the structural design and the manufacturing difficulty, being capable of utilizing the capability of a section bar press to the maximum extent, improving the mechanical property of the section bar, and being suitable for the strength requirements of various sea conditions.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a landing stage structure for on telescopic landing stage system, includes for fixed mounting at support platform or support the landing stage fixed truss on the ship, and connect in the landing stage fixed truss bottom through telescopic machanism for erect fixed or keep in touch the landing stage telescopic truss on target platform or boats and ships, its characterized in that:

2. A trestle structure for use on a telescopic trestle system according to claim 1, characterised in that: four angles of the rhombus shape of the inner section are formed on the inner side wall of the outer section by extrusion welding.

3. A trestle structure for use on a telescopic trestle system according to claim 1, characterised in that: the metal section is an aluminum alloy section.