CN105136591A - Object falling simulation test device - Google Patents

Abstract

The invention relates to a falling object simulation test device, comprising a main body frame (1) with a lifting mechanism (2) on the top, a traverse mechanism with a guide rail (4) and a falling object test piece bracket (8), wherein , the upper part of the main frame (1) is provided with an upper test mechanism, including a working platform (16), a guide rail (4) and a traverse mechanism; the traverse mechanism includes a fixed plate (10) and a movable plate (12) connected to each other, Both are in contact with the guide rail (4) through the rollers (11); the positioning column (14) is fixed on the fixed plate (10); the falling object test piece bracket (8) is divided into two parts, and the two parts are respectively fixedly connected to On the fixed plate (10) and the mobile plate (12) of the moving mechanism; the mobile plate (10) is connected and fixed on the supporting reel (5) on the work platform (16) by the traction rope (6). The invention can improve the accuracy of testing the height, angle and initial speed of falling objects.

Description

A falling object simulation test device

Technical field

The invention belongs to the technical field in the production, laying and installation process of deep-water submarine pipelines, and in particular relates to an experimental device capable of simulating the risk of falling objects in deep-water submarine pipelines.

Background technique

The submarine oil and gas pipeline is the lifeline project of the country, and its safety is of great importance to my country's offshore oil development and national economic development. However, the marine environmental conditions are complex and diverse. Submarine pipelines are subject to complex loads and environmental conditions such as self-weight, external hydrostatic pressure, internal pressure, rough seabed, and seawater corrosion. , Offshore drilling platform falling objects and other offshore structure falling objects damage, which in turn will lead to extremely serious oil and gas leakage accidents, which will cause huge economic, social, political and ecological losses to the country.

An important situation to consider in terms of the safety of offshore structures is the fall load during lifting by a crane or other similar equipment. In marine engineering, when a crane is performing hoisting operations, the lifting object may fall anywhere within the reach of the crane. As a kind of accidental load, the event of falling objects occurs very frequently. For example, the number of pipe drops during drilling operations is as high as 1/5 of the total number of lifting operations per unit platform per year. Other items such as food supply containers, fuel tanks, winches, mud pumps, etc. may also fall during lifting operations. The main risk consequence of objects falling into seawater is damage to submarine pipelines and underwater equipment. When subsea pipelines or underwater equipment contain hydrocarbons, any tiny rupture in them can have catastrophic consequences.

Contents of the invention

The purpose of the present invention is to provide a device capable of simulating a falling object test in a common experimental field for simulating the impact test of a falling object on a submarine pipeline in view of the research characteristics of the falling object test, so as to provide reference for engineering practice. Technical scheme of the present invention is as follows:

A falling object simulation test device comprises a main body frame (1) provided with a lifting mechanism (2) on the top, a traverse mechanism with guide rails (4) and a falling object test piece bracket (8). in,

The upper part of the main frame (1) is provided with an upper test mechanism, including a working platform (16), a guide rail (4) fixed on the top of the main frame (1) and a traversing mechanism for placing the falling object test piece bracket (8);

The traversing mechanism includes a fixed plate (10) and a movable plate (12) connected to each other, and both the fixed plate (10) and the movable plate (12) are in contact with the guide rail (4) through rollers (11);

A positioning column (14) is fixed on the fixing plate (10) for connecting with a positioning column (15) fixed on the main body frame (1) through a lasso to realize the positioning of the fixing plate (10);

The falling object test piece bracket (8) is divided into two parts, and the two parts are respectively fixedly connected to the fixed plate (10) and the movable plate (12) of the traverse mechanism; the movable plate (10) is connected and fixed by the traction rope (6) The supporting reel (5) on the working platform (16).

As a preferred embodiment, the moving plate (12) is connected to the fixed plate (10) through a fixed buckle (13). The lifting mechanism (2) includes two tripod brackets respectively arranged at both ends of the top of the main frame (1), a beam fixed on the top of the tripod bracket and extending out of the main frame (1), and a hoist. The main frame (1) adopts multi-layer diagonal bracing to ensure the strength and stability of the device. Both ends of the guide rail are fixed with positioning blocks (3) for limiting the displacement of the traversing mechanism; and positioning blocks (9) for limiting lateral displacement are provided on the sides of the fixed plate (10) and the moving plate (12). After the fixed plate (12) is positioned and the connection between the fixed plate (10) and the mobile plate (12) is loosened, the traction of the traction rope makes the mobile plate (10) together with the falling object test piece holder fixedly connected to it A part of the frame (8) moves, and the two parts of the falling object test piece bracket (8) separate, so that the falling object test piece placed on the bracket falls.

Aiming at the requirements of the deep-water submarine pipeline falling object test, the present invention provides a device capable of carrying out the falling object test simulation on a general experimental site, and has the following advantages compared with the existing test technology:

(1) For the deep-water submarine pipeline falling object test, the device can better realize the unification of test accuracy and economic applicability;

(2) In terms of test accuracy, this device avoids human errors that may occur in the test method of manpower throwing falling objects, and improves the accuracy of the test falling object height, falling object angle and initial speed;

(3) In terms of practical performance, this device integrates mechanical devices such as hinges, slide rails, and pulleys, which greatly reduces the input of manpower, increases the safety of the test, and also reduces the difficulty of the test operation.

Description of drawings

Figure 1 is an axonometric view of the main structure:

Figure 2 is the axonometric view of the upper test mechanism:

Figure 3 is a detailed axonometric view of the traverse mechanism:

Figure 4 is the axonometric view of the traversing mechanism after the fixed plate and the moving plate are separated:

Explanation of symbols in the figure: 1 main frame; 2 lifting mechanism; 3 guide rail positioning block; 4 guide rail; 5 reel; 6 traction rope; Traversing mechanism positioning block; 10 Traversing mechanism fixing plate; 11 Traversing mechanism roller; 12 Traversing mechanism moving plate; 13 Traversing mechanism fixing buckle; 14 Fixed plate positioning column; Working platform; 17 fixed nooses.

Detailed ways

The present invention will be described below in conjunction with accompanying drawing and embodiment

Referring to Figures 1 and 2, the falling object simulation test device of the present invention specifically includes a support frame with a lifting mechanism, a traverse mechanism with guide rails, and a set of brackets suitable for different shapes of falling object test pieces.

The device consists of three parts: one part is the main frame 1, which adopts multi-layer diagonal bracing to ensure the strength and stability of the device; there is a lifting mechanism 2 on the top of the main frame, including two tripod brackets and a beam extending outside the main structure And hanging gourds. The second part is the upper test mechanism, including the working platform 16 with guardrails, the guide rail 4 installed on the top of the main structure, and the traversing mechanism for placing the bracket of the falling object test piece; the two ends of the guide rail are equipped with positioning blocks 3, which can limit The displacement of the traverse mechanism. The detail diagram of the traversing mechanism is shown in Figure 3. The plate of the traversing mechanism is divided into a fixed plate 10 and a moving plate 12. The connecting part of the fixed plate and the moving plate is equipped with a fixing buckle 13, which is used for the connection between the fixed plate and the moving plate. Connection and fixing; fixed plate and movable plate bottom are equipped with roller 11; fixed plate and movable plate side have positioning block 9, are used for limiting displacement; fixed plate is equipped with positioning column 14, cooperates with positioning column 15 on the support frame The positioning of the fixed plate is realized; the moving plate is connected to the supporting reel 5 installed on the working platform by the traction rope 6, and the reel has an operating handle. The third part is the falling object test piece bracket 8. The bracket 8 is divided into two parts, which are respectively connected and fixed on the two flat plates of the traverse mechanism by bolts 7, and can be exchanged according to the shape of different falling object test pieces.

Before the test, the full-scale pipe fittings are placed on the ground within the scope of the main body frame, and the falling object test piece of the specified size is lifted to a position higher than the traverse mechanism through the lifting mechanism 2. Afterwards, it is pushed by manpower to move the traversing mechanism below the falling object test piece, and the lifting mechanism 2 is operated to place the falling object test piece on the bracket 8 . Shake the handle of the reel 5 afterwards, move the traversing mechanism to the designated position of the test by pulling the traction rope 6, remove the fixing buckle 13 between the fixed plate 10 and the movable plate 12, and connect the column 14 on the fixed plate with a lasso 17 And the column 15 on the support frame realizes the positioning of the fixed plate. Shake the handle of the reel 5, pull the moving plate 12 to continue moving, separate the fixed plate and the moving plate of the traversing mechanism, as shown in Figure 4, make the falling object test piece placed on the bracket fall, and complete the test.

Claims (6)

1. A falling object simulation test device, comprising a main body frame (1) with a lifting mechanism (2) on the top, a traverse mechanism with a guide rail (4) and a falling object test piece bracket (8). in, The upper part of the main frame (1) is provided with an upper test mechanism, including a working platform (16), a guide rail (4) fixed on the top of the main frame (1) and a traversing mechanism for placing the falling object test piece bracket (8); The traversing mechanism includes a fixed plate (10) and a movable plate (12) connected to each other, and both the fixed plate (10) and the movable plate (12) are in contact with the guide rail (4) through rollers (11); A positioning column (14) is fixed on the fixing plate (10) for connecting with a positioning column (15) fixed on the main body frame (1) through a lasso to realize the positioning of the fixing plate (10); The falling object test piece bracket (8) is divided into two parts, and the two parts are respectively fixedly connected to the fixed plate (10) and the movable plate (12) of the traverse mechanism; the movable plate (10) is connected and fixed by the traction rope (6) The supporting reel (5) on the working platform (16). 2. The test device according to claim 1, characterized in that the moving plate (12) is connected with the fixed plate (10) through a fixed buckle (13). 3. The test device according to claim 1, characterized in that the lifting mechanism (2) comprises two tripod brackets respectively arranged at both ends of the top of the main body frame (1), one of which is fixed on the top of the tripod bracket and extends to the main body Cross beams and hanging hoists outside the frame (1). 4. The test device according to claim 1, characterized in that the main frame (1) adopts multi-layer diagonal bracing to ensure the strength and stability of the device. 5. The test device according to claim 1, characterized in that, the two ends of the guide rail are fixed with positioning blocks (3) for limiting the displacement of the traverse mechanism; both sides of the fixed plate (10) and the movable plate (12) A positioning block (9) for limiting lateral displacement is provided. 6. The test device according to claim 1, characterized in that, after the fixed plate (12) is positioned and the connection between the fixed plate (10) and the moving plate (12) is loosened, the traction by the traction rope makes the movement The plate (10) moves together with a part of the falling object test piece bracket (8) fixedly connected thereto, and the two parts of the falling object test piece bracket (8) are separated, so that the falling object test piece placed on the bracket fall.