Deep sea winch tension compensation device

Abstract

The utility model provides a deep sea winch tension compensation device, and relates to the field of marine retractable equipment. The device comprises a fixed base, and two parallel cross beam structures are arranged on the upper portion of the fixed base and used for fixing a first linear driving mechanism and a second linear driving mechanism correspondingly; a first conical cylinder rack is hoisted below the first linear driving mechanism; a second conical cylinder rack is hoisted below the second linear driving mechanism; the first conical cylinder support is used for fixing a first conical cylinder, and the second conical cylinder support is used for fixing a second conical cylinder. The outer diameter gradually-shrinking direction of the first conical cylinder is opposite to the outer diameter gradually-shrinking direction of the second conical cylinder, and the axis of the first conical cylinder is parallel to the axis of the second conical cylinder. The first conical cylinder and the second conical cylinder are respectively driven to reciprocate by driving the first conical cylinder rack and the second conical cylinder rack, and the radius of the cable winding conical cylinders is changed, so that the tension of the cable is compensated.

Description

Technical Field

[0001] This utility model relates to marine launching and recovering equipment, and more particularly to a deep-sea winch tension compensation device. Background Technology

[0002] With the increasing exploration and development of deep-sea resources, the demand for tasks such as seabed mineral resource exploration, deep-sea geological sampling, equipment transportation, and remote sensing exploration continues to grow. Deep-sea winches, as indispensable key equipment in marine scientific research operations, play a vital role in the development of marine science. However, due to the complex and changeable marine environment, research vessels are subject to significant heave and sway due to uncertain factors such as sea winds, waves, and currents during actual operations. The wave compensation system equipped in deep-sea winches can compensate for heave and sway, eliminating the impact of the vessel's heave and sway on winch operations and ensuring the control accuracy and stability of cable deployment and retrieval. However, the frequent deployment and retrieval of cables by the wave compensation system can cause sudden increases or decreases in cable tension. This alternating action may cause the cable tension to exceed the required working load or lead to fatigue failure, affecting the cable's service life. Utility Model Content

[0003] To address the aforementioned technical problem of reduced cable lifespan due to frequent cable deployment and retraction caused by waves, a deep-sea winch tension compensation device is provided. This invention primarily utilizes the coordinated action of two cones to adjust cable tension while maintaining a constant cable length, thereby extending the cable's service life.

[0004] The technical means adopted in this utility model are as follows:

[0005] A deep-sea winch tension compensation device includes:

[0006] A fixed base has two parallel crossbeam structures on its upper part. The crossbeam structure closer to the winch direction is used to fix the first linear drive mechanism, and the crossbeam structure farther away from the winch direction is used to fix the second linear drive mechanism.

[0007] A first conical frame is suspended below the first linear drive mechanism, and the first linear drive mechanism is used to control the hoisting position of the first conical frame; a second conical frame is suspended below the second linear drive mechanism, and the second linear drive mechanism is used to control the hoisting position of the second conical frame.

[0008] The first cone support is used to fix the first cone, and the second cone support is used to fix the second cone;

[0009] The outer diameter of the first cone tapers in the opposite direction to that of the second cone, and the axes of the first and second cones are parallel.

[0010] Furthermore, the first linear drive mechanism includes a first linear drive mechanism motor and a first lead screw connected to the first linear drive mechanism motor; the second linear drive mechanism includes a second linear drive mechanism motor and a second lead screw connected to the second linear drive mechanism motor.

[0011] Furthermore, the first linear drive mechanism motor and the second linear drive mechanism motor are arranged on opposite sides of the fixed base.

[0012] Furthermore, the first cone frame is engaged with the first lead screw via a lead screw nut; the second cone frame is engaged with the second lead screw via a lead screw nut.

[0013] Furthermore, after the cable exits from the deep-sea winch, it passes successively below the first cone and above the second cone.

[0014] Furthermore, after the cable exits from the second cone, it passes through a tension sensor for tension measurement.

[0015] Furthermore, the deep-sea winch tension compensation device also includes a controller, which controls the operation of the first linear drive mechanism motor and the second linear drive mechanism motor based on the cable tension measured by the tension sensor.

[0016] This utility model has the following advantages:

[0017] 1. The first and second linear drive mechanisms of this utility model are driven by electric motors, which have higher efficiency and shorter delay time than traditional hydraulic actuators.

[0018] 2. In this utility model, the first cone and the second cone are arranged facing each other, and the cable passes around from the bottom of the first cone and the top of the second cone respectively. The smooth conical surface can hold the cable in place to prevent it from shifting to the left or right. At the same time, the conical surface can infinitely adjust the cable tension, which is beneficial for precise tension compensation.

[0019] 3. The positions of the first and second cones of this utility model are independently controlled by the first linear drive mechanism and the second linear drive mechanism, which facilitates precise control of cable tension, and the redundant design improves system reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the deep-sea winch tension compensation device of this utility model.

[0022] Figure 2 This is an isometric view of the deep-sea winch tension compensation device of this utility model.

[0023] Figure 3 This is a schematic diagram of the installation of the first linear drive structure and the first conical frame of this utility model.

[0024] In the diagram: 1. Deep-sea winch; 2. Fixed base; 3. First linear drive mechanism motor; 4. Second linear drive mechanism motor; 5. First cone frame; 6. Second cone frame; 7. First cone; 8. Second cone; 9. Tension sensor; 10. Lead screw; 11. Lead screw nut; 12. Slider; 13. Slide rail. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Unless otherwise specifically stated, the relative arrangement of components described in these embodiments does not limit the scope of the invention. The use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0026] like Figures 1-3 As shown, this utility model discloses a deep-sea winch tension compensation device, which mainly includes a fixed base 2, a first cone frame 5, a first cone 7, a second cone support 6, a second cone 8, and a tension sensor 9.

[0027] The fixed base 2 is set on the working deck and installed in front of the deep-sea winch 1. The upper part of the fixed base 2 has two crossbeam structures, each of which is fixedly equipped with a linear drive mechanism. The crossbeam structure closer to the winch direction is used to fix the first linear drive mechanism, and the crossbeam structure further away from the winch direction is used to fix the second linear drive mechanism. Further, the first cone frame 5 and the second cone frame 6 are both fixedly connected to the lead screw nut 11 and the slider 12. The first cone frame 5 and the second cone frame 6 are connected to the first cone 7 and the second cone 8 respectively through bearings. In this specific embodiment, the first linear drive mechanism and the second linear drive mechanism are arranged facing each other and each consists of a linear drive mechanism motor, a lead screw, a lead screw nut, a slide rail 13, and a slider 12. The motors of the first and second linear drive mechanisms are connected to the lead screw, and the lead screw converts the rotational motion of the motor into the linear and rotational motion of the lead screw nut through the lead screw nut. The slide rail 13 is fixedly connected to the crossbeam structure on the upper part of the fixed base 2, and the slider 12 is fixedly connected to the lead screw nut and moves in translation on the slide rail 13. The slide rail 13 of the first linear drive mechanism and the second linear drive mechanism restricts the rotation of the lead screw nut 11 through the slider 12, so that the first cone frame 5 and the second cone frame 6 only move in a linear motion.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the first linear drive mechanism and the second linear drive mechanism have the same structure but are installed in opposite directions. Specifically, the first linear drive mechanism includes a first linear drive mechanism motor 3 and a first lead screw connected to the first linear drive mechanism motor 3. The first lead screw is connected to the first cone cylinder support 5 through a lead screw nut 11, and converts the rotational motion of the motor into the linear motion of the first cone cylinder support 5, thereby driving the first cone cylinder 7 to move left and right, controlling the position of the first cone cylinder 7. Correspondingly, the second linear drive mechanism includes a second linear drive mechanism motor 4 and a second lead screw connected to the second linear drive mechanism motor 4. The second lead screw is connected to the second cone cylinder support 6 through a lead screw nut, and converts the rotational motion of the second linear drive mechanism motor 4 into the linear motion of the second cone cylinder support 6, thereby driving the second cone cylinder 8 to move left and right, controlling the position of the second cone cylinder 8.

[0029] More preferably, in this specific embodiment, the first cone 7 and the second cone 8 are arranged facing each other, and the cone surfaces are smooth; the cable exits from the deep-sea winch 1, passes under the first cone 7 and above the second cone 8 respectively, and then passes through the tension sensor 9.

[0030] More preferably, in this specific embodiment, the deep-sea winch tension compensation device further includes a controller, which controls the operation of the first linear drive mechanism motor and the second linear drive mechanism motor based on the cable tension measured by the tension sensor. The controller can be a PLC controller.

[0031] The working process of the deep-sea winch tension compensation device described in this embodiment includes:

[0032] When performing tension compensation on the deep-sea winch 1, the tension of the cable is first detected by the tension sensor 9. When the controller determines that the cable tension is less than a preset threshold, the first linear drive mechanism and the second linear drive mechanism respectively drive the first cone frame 5 and the second cone frame 6 to move the first cone 7 and the second cone 8 in opposite directions. The radius of the cable around the first cone 7 and the second cone 8 increases, and the cable tension increases while the cable length remains constant. When the controller determines that the cable tension is greater than the threshold, the first linear drive mechanism and the second linear drive mechanism respectively drive the first cone frame 5 and the second cone frame 6 to move the first cone 7 and the second cone 8 in opposite directions. The radius of the cable around the first cone 7 and the second cone 8 increases or decreases, and the cable tension decreases while the cable length remains constant. This invention compensates for cable tension by driving the first cone frame and the second cone frame to move the first cone and the second cone reciprocating, thereby changing the radius of the cable winding around the cone.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A deep sea winch tension compensation device, characterized by, The deep-sea winch tension compensation device comprises: a fixed base, the upper part of which has two parallel beam structures, the beam structure close to the direction of the winch is used for fixing a first linear drive mechanism, and the beam structure far from the direction of the winch is used for fixing a second linear drive mechanism; a first conical cylinder frame is hung below the first linear drive mechanism, and the first linear drive mechanism is used for controlling the hoisting position of the first conical cylinder frame; a second conical cylinder frame is hung below the second linear drive mechanism, and the second linear drive mechanism is used for controlling the hoisting position of the second conical cylinder frame; a first conical cylinder support is used for fixing a first conical cylinder, and a second conical cylinder support is used for fixing a second conical cylinder; the direction of the outer diameter of the first conical cylinder gradually shrinks in the opposite direction of the outer diameter of the second conical cylinder, and the axes of the first conical cylinder and the second conical cylinder are parallel.

2. A deep sea winch tension compensation device according to claim 1, characterised in that, The first linear drive mechanism comprises a first linear drive mechanism motor and a first lead screw connected with the first linear drive mechanism motor; the second linear drive mechanism comprises a second linear drive mechanism motor and a second lead screw connected with the second linear drive mechanism motor.

3. A deep sea winch tension compensation device according to claim 2, characterised in that, The first linear drive mechanism motor and the second linear drive mechanism motor are arranged on the opposite sides of the fixed base, respectively.

4. A deep sea winch tension compensation device according to claim 2, characterised in that, The first conical cylinder frame is engaged with the first lead screw through a lead screw nut; the second conical cylinder frame is engaged with the second lead screw through a lead screw nut.

5. A deep sea winch tension compensation device according to claim 1, wherein, After the cable is discharged from the deep-sea winch, it is wound from below the first conical cylinder and above the second conical cylinder in sequence.

6. A deep sea winch tension compensation device according to claim 5, characterised in that, After the cable is discharged from the second conical cylinder, the tension of the cable is measured by a tension sensor.

7. A deep sea winch tension compensation device according to claim 6, characterised in that, The deep-sea winch tension compensation device further comprises a controller, which is used for controlling the first linear drive mechanism motor and the second linear drive mechanism motor to work according to the cable tension measured by the tension sensor.

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