Walking type pipeline protection pulley device for submarine pipeline laying

Abstract

A walking type pipeline protection pulley device for submarine pipeline laying comprises a plurality of movable walking units which are arranged below a pipeline at intervals. Each movable walking unit comprises a movable base, an adjustable support is installed at the upper end of each movable base, and a pipeline bracket is fixed to the top end of each adjustable support and tightly holds a pipeline. According to the walking type pipeline protection pulley device for laying the submarine pipeline, damage to the pipeline and an anode protection block is avoided.

Description

Technical Field

[0001] The utility model relates to submarine pipeline laying equipment, in particular to a walking pipeline protection pulley device used for submarine pipeline laying. Background Art

[0002] When laying submarine pipelines, since submarine pipeline laying is affected by many seasonal factors and there are many unsafe factors, it is usually necessary to complete offshore pipeline laying in the shortest time. The conventional practice is to weld the pipelines on the shore and weld the anode protection blocks of the pipelines before laying the offshore pipelines. However, when laying the pipelines after the pipelines are welded, most of the pulleys are fixed pulleys. Since the pipelines are long and flexible steel pipes, they will inevitably rotate during the sliding process, causing the center of the pipeline to shift, thereby causing the rotation of the pipeline. Therefore, during the sliding process of the pipeline, the anode protection blocks welded on the pipeline are easily stuck at the pulley, which will cause damage to the pulley and the anode protection blocks. At the same time, it also increases the traction during pipeline laying, which is not conducive to pipeline laying. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a walking type pipeline protection pulley device for laying submarine pipelines, which can avoid damage to the pipelines and anode protection blocks and improve the construction efficiency of the pipelines.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A walking type pipeline protection pulley device for laying submarine pipelines, comprising a plurality of moving walking units, wherein the plurality of moving walking units are arranged at intervals below the pipeline;

[0006] Each mobile walking unit comprises a mobile base, an adjustable support is installed on the upper end of the mobile base, a pipe bracket is fixed on the top end of the adjustable support, and the pipe bracket holds the pipe tightly.

[0007] The lower end of the mobile base is provided with a universal wheel.

[0008] The adjustable support comprises a hollow sleeve fixed on the movable base, a sealing plate at the top end of the hollow sleeve has a hole and is fixed with a nut, and the nut is threadedly connected with the screw rod.

[0009] The pipeline bracket comprises an upper semicircular tube and a lower semicircular tube, and the upper semicircular tube and the lower semicircular tube are locked and closed by a connecting component.

[0010] The utility model provides a walking type pipeline protection pulley device for laying submarine pipelines, which has the following technical effects:

[0011] 1) By setting four universal pulleys at the bottom of the mobile base of each mobile walking unit, the entire device can move along with the pipeline sliding down, thus avoiding damage to the pipeline and the anode protection block to the greatest extent.

[0012] 2) The retractable screw can adjust the height of the entire device. When the pipeline encounters uneven terrain during sliding down, the height can be adjusted to avoid uneven gravity distribution.

[0013] 3) The upper semicircular tube and the lower semicircular tube are connected to the pipe through the connecting components, so that the pipe is more stable during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the utility model (first perspective).

[0017] Figure 3 It is a schematic diagram of the structure of the utility model (second viewing angle).

[0018] Figure 4 Schematic diagram of the arrangement of anode protection blocks on the pipeline.

[0019] Figure 5 It is a left view of the existing pipeline bracket of the utility model being locked with the anode protection block.

[0020] Figure 6 This is a schematic structural diagram of the second type of pipe bracket in the utility model (first perspective).

[0021] Figure 7 This is a schematic structural diagram of the second type of pipe bracket in the utility model (second viewing angle).

[0022] Figure 8 It is a cross-sectional view of the connecting assembly of the second pipe bracket in the utility model (first state).

[0023] Fig. 9 It is a cross-sectional view of the connecting assembly of the second pipe bracket in the utility model (second state). DETAILED DESCRIPTION

[0024] like Figure 1-3As shown, a walking type pipeline protection pulley device for laying submarine pipelines includes a plurality of mobile walking units, each of which includes a mobile base 1. Four universal pulleys are arranged at the bottom of the mobile base 1. The arrangement of the pulleys can make the entire device move together with the pipeline 4 sliding down, thereby avoiding damage to the pipeline and the anode protection block to the greatest extent. The upper part of the mobile base 1 is an adjustable support 2. The adjustable support 2 includes a hollow sleeve 2.1 fixed to the end face of the mobile base 1. A nut 2.2 is welded on the top of the hollow sleeve 2.1, and a screw 2.3 is threadedly connected to the nut 2.2. When the terrain is uneven during the sliding of the pipeline, the screw 2.3 can be screwed in or out, and then the length of the adjustable support 2 can be appropriately adjusted. In this way, the gravity of the entire pipeline can be evenly distributed on each mobile walking unit, thereby avoiding damage caused by excessive force on a single mobile walking unit. At the upper end of the adjustable support 2 is a pipe bracket 3, which is composed of an upper semicircular tube 3.1 and a lower semicircular tube 3.2. The lower semicircular tube 3.2 is welded to the screw 2.3 as a whole, and the upper semicircular tube 3.1 is connected to the lower semicircular tube 3.2 through a connecting assembly. When the upper semicircular tube 3.1 and the lower semicircular tube 3.2 are closed, they can hold the pipe 4 tightly, so that the pipe is relatively stable during the sliding process.

[0025] like Figure 2 As shown, the connection components between the upper semicircular tube 3.1 and the lower semicircular tube 3.2 are bolts 3.3 and nuts. The bolts 3.3 pass through the holes on the corresponding upper semicircular tube 3.1 and the lower semicircular tube 3.2 and are then locked by the nuts.

[0026] like Figure 6-9 As shown, the connection assembly between the upper semicircular tube 3.1 and the lower semicircular tube 3.2 includes a sleeve and a pin arranged on one side of the upper semicircular tube 3.1 and the lower semicircular tube 3.2. The pin freely passes through the sleeves of the upper semicircular tube 3.1 and the lower semicircular tube 3.2 and is limited at both ends, so that a hinged relationship can be formed, so that the upper semicircular tube 3.1 and the lower semicircular tube 3.2 can rotate relative to each other.

[0027] like Figure 5-8 As shown, a notch is provided on the other side of the lower semicircular tube 3.2, and an elastic rod 7 is hinged at the notch. The elastic rod 7 is composed of a rod 1 7.1, a rod 2 7.2 and a spring 7.3. The rod 2 7.2 is located in the hole of the rod 1 7.1 and retracts into the rod 1 7.1 under normal conditions by the action of the spring 7.3. A limit plate 8 is fixed on the top of the elastic rod 7, and a rectangular plate 9 with rounded ends is sleeved on the elastic rod 7. The rectangular plate 9 can slide up and down and rotate circumferentially along the elastic rod 7. A waist hole 10 is opened at a corresponding position on the upper semicircular tube, and the waist hole 10 can allow the rectangular plate 9 to pass through.

[0028] When locking is required, the rectangular plate 9 is rotated so that the length direction of the rectangular plate 9 is consistent with the length direction of the waist hole 10. Then the rectangular plate 9 is moved upward, and the rectangular plate 9 drives the limiting plate 8 of the rod 2 7.2 to pass through the waist hole 10; then the rectangular plate 9 is rotated 90 degrees, and the rectangular plate 9 falls into the countersunk hole on one side of the upper semicircular tube 3.1. Due to the downward squeezing effect of the spring 7.3, the rectangular plate 9 is limited and locked. In this way, the purpose of locking the upper semicircular tube 3.1 and the lower semicircular tube 3.2 is achieved.

[0029] When the device needs to be disassembled, the rectangular plate 9 is pulled up and separated from the countersunk hole of the upper semicircular tube 3.1, and rotated 90 degrees to make the length direction of the rectangular plate 9 consistent with the length direction of the waist hole 10. Under the pressure of the spring 7.3 (a suitable spring needs to be selected to ensure a certain elastic force), the rod 2 7.2 retracts into the rod 1 7.1 and drives the rectangular plate 9 to fall and separate from the upper semicircular tube 3.1, and then the upper semicircular tube 3.1 and the lower semicircular tube 3.2 can be separated.

[0030] Working principle and process: Multiple groups of mobile walking units are distributed at intervals along the length direction, arranged at the bottom of the pipeline after being connected to the pipeline, and moved as a whole as the pipeline slides down and is laid, which can avoid damage to the pipeline and anode protection blocks; when multiple mobile walking units approach the sea end in turn, they are dismantled one by one and then used for subsequent pipeline sliding down and laying.

Claims

1. A walking pipeline protection pulley device for laying submarine pipelines, characterized in that: It comprises a plurality of mobile walking units, wherein the plurality of mobile walking units are arranged at intervals below the pipeline (4); Each mobile walking unit comprises a mobile base (1), an adjustable support (2) is mounted on the upper end of the mobile base (1), a pipe bracket (3) is fixed on the top end of the adjustable support (2), and the pipe bracket (3) holds the pipe (4) tightly.

2. A walking type pipeline protection pulley device for submarine pipeline laying according to claim 1, characterized in that: The lower end of the mobile base (1) is equipped with a universal wheel.

3. A walking type pipeline protection pulley device for submarine pipeline laying according to claim 1, characterized in that: The adjustable support (2) comprises a hollow sleeve (2.1) fixed on the movable base (1); a sealing plate at the top end of the hollow sleeve (2.1) has a hole and is fixed with a nut (2.2); the nut (2.2) is threadedly connected to the screw rod (2.3).

4. A walking type pipeline protection pulley device for laying submarine pipelines according to claim 1, characterized in that: The pipe bracket (3) comprises an upper semicircular tube (3.1) and a lower semicircular tube (3.2), and the upper semicircular tube (3.1) and the lower semicircular tube (3.2) are locked and closed by a connecting assembly.

Images