Steel cable tension buffering device based on pulley-spring structure

Abstract

The invention relates to a steel cable tension buffer device based on a pulley-spring structure, which comprises a cylinder, guide pulley assemblies, buffer pulley assemblies, spring assemblies and guide rails, the guide pulley assemblies are respectively arranged on two sides of the cylinder 1, the buffer pulley assemblies are arranged in the upper part of the cylinder, and the buffer pulley assemblies 3 can move up and down along the guide rails on two sides of the cylinder 1. A spring assembly is connected between the buffer pulley assembly and the bottom of the cylinder 1, and a load-bearing steel cable is wound on a buffer pulley of the buffer pulley assembly and guide pulleys of the two guide pulley assemblies. The tension buffering device can relieve fluctuation of the tension of the steel cable, control precision of the tension of the steel cable is guaranteed, and supply operation efficiency is improved; according to the tension buffering device, the control requirement of the system on the winch is lowered, and the burden of the winch is relieved.

Description

Technical Field

[0001] The invention relates to a winch for offshore replenishment operations, in particular to a winch cable tension buffer device. Background Art

[0002] During the offshore replenishment operation, due to the influence of the weight of the transported cargo and the sea conditions, the tension of the constructed steel cable fluctuates greatly, affecting the efficiency of the replenishment operation, and the control requirements for the winch are high, which increases the burden on the winch. Therefore, it is necessary to add a tension buffer device in the steel cable transmission path to compensate for the tension fluctuation during the replenishment operation, ensure the control accuracy of the steel cable, and improve the efficiency of the replenishment operation.

[0003] Existing tension buffer devices are used to monitor and automatically adjust the tension of the fabric during the process of winding and unwinding the fabric, replacing manual monitoring methods to improve work efficiency. There are also floating frame tension roller adjustment devices used in the field of chemical foil, which use springs to adjust the relative position between the two rollers. However, there is currently no buffer device used in the field of offshore replenishment to compensate for changes in cable tension. Therefore, in order to address this problem, it is urgent to design a tension buffer device to compensate for tension fluctuations during replenishment operations, ensure the control accuracy of the cable, and improve the efficiency of replenishment operations. Summary of the invention

[0004] The present invention is to provide a cable tension buffer device based on a pulley-spring structure, which is used to solve the following technical problems:

[0005] 1. The tension buffer device can compensate for the tension fluctuation of the steel cable through the spring structure.

[0006] 2. The tension buffer device is internally designed with a track to ensure that the buffer pulley assembly moves at a limited position.

[0007] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a steel cable tension buffer device based on a pulley-spring structure, comprising a cylinder, a guide pulley assembly, a buffer pulley assembly, a spring assembly, and a guide rail. Guide pulley assemblies are respectively provided on both sides of the cylinder 1, and a buffer pulley assembly is installed in the upper part of the cylinder. The buffer pulley assembly 3 can move up and down along the guide rails on both sides of the cylinder 1. A spring assembly is connected between the buffer pulley assembly and the bottom of the cylinder 1, and load-bearing steel cables are wound around the buffer pulley of the buffer pulley assembly and the guide pulleys of the two guide pulley assemblies.

[0008] Furthermore, when the total height of the cable tension buffer device is a fixed height, the spring assembly expands and contracts up and down inside the cylinder during operation.

[0009] Furthermore, when the tension fluctuation on the load-bearing steel cable becomes larger, the length of the spring assembly becomes shorter accordingly; when the tension fluctuation on the load-bearing steel cable becomes smaller, the length of the spring assembly becomes longer accordingly.

[0010] Further, when there is no fluctuation in the tension on the load-bearing cable, the spring assembly operates in a neutral position.

[0011] Furthermore, the cable tension buffer device is used as a pre-processor for the tension control of the load-bearing cable, which can reduce the difficulty of controlling the winch and greatly reduce the burden of frequent winch control under severe sea conditions.

[0012] The technical solution of the present invention has two beneficial effects:

[0013] 1. The tension buffer device can alleviate the fluctuation of cable tension, ensure the control accuracy of cable tension, and improve the efficiency of replenishment operations.

[0014] 2. The tension buffer device reduces the system's control requirements on the winch and reduces the burden on the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a general structural diagram of the cable tension buffer device based on the pulley-spring structure of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0017] like Figure 1 As shown, a cable tension buffer device based on a pulley-spring structure provided by an embodiment of the present invention is used to buffer tension fluctuations under severe sea conditions, and includes a cylinder 1, a guide pulley assembly 1 2, a buffer pulley assembly 3, a spring assembly 4, a guide pulley assembly 2 5, and a guide rail 6. A guide pulley assembly 1 2 and a guide pulley assembly 2 5 are respectively provided on both sides of the cylinder 1, and a buffer pulley assembly 3 is installed in the upper part of the cylinder 1. The buffer pulley assembly 3 can move up and down along the guide rails 6 on both sides of the cylinder 1. A spring assembly 4 is connected between the buffer pulley assembly 3 and the bottom of the cylinder 1, and a load-bearing steel cable is wound around the buffer pulley of the buffer pulley assembly 3 and the guide pulleys in the guide pulley assembly 1 2 and the guide pulley assembly 2 5.

[0018] The tension buffer device has a fixed overall height, and the spring assembly 4 expands and contracts up and down inside the cylinder 1 during operation.

[0019] When the tension fluctuation on the load-bearing cable increases, the length of the spring assembly 4 becomes shorter accordingly. When the tension fluctuation on the load-bearing cable decreases, the length of the spring assembly 4 becomes longer accordingly. When the tension on the load-bearing cable does not fluctuate (ideal state), the spring assembly 4 works in the middle position. The tension buffer device is used as a pre-processing for the tension control of the load-bearing cable to reduce the control difficulty of the winch, and greatly reduces the burden of frequent winch control in severe sea conditions.

[0020] The following is an explanation of the two problems mentioned by Shangzhenxi:

[0021] 1. The tension buffer device has the function of tension compensation and buffering the tension of the steel cable. When the tension fluctuation on the load-bearing steel cable becomes larger, the length of the spring assembly becomes shorter accordingly. When the tension fluctuation on the load-bearing steel cable becomes smaller, the length of the spring assembly becomes longer accordingly. When the tension on the load-bearing steel cable does not fluctuate (ideal state), the spring assembly works in the middle position, thereby realizing the function of cable tension buffering.

[0022] 2. The tension buffer device is designed with a track inside to ensure that the buffer pulley assembly moves up and down inside the guide rail along with the spring assembly when the tension on the load-bearing steel cable fluctuates.

[0023] Key technical points of the present invention:

[0024] 1. The tension buffer device can compensate for the tension fluctuation of the steel cable through the spring structure.

[0025] 2. The tension buffer device is internally designed with a track to ensure that the buffer pulley assembly moves at a limited position.

Claims

1. A cable tension buffer device based on a pulley-spring structure, characterized in that: It includes a cylinder, a guide pulley assembly, a buffer pulley assembly, a spring assembly, and a guide rail. Guide pulley assemblies are respectively provided on both sides of the cylinder 1, and a buffer pulley assembly is installed in the upper part of the cylinder. The buffer pulley assembly 3 can move up and down along the guide rails on both sides of the cylinder 1. A spring assembly is connected between the buffer pulley assembly and the bottom of the cylinder 1. Load-bearing steel cables are wound around the buffer pulley of the buffer pulley assembly and the guide pulleys of the two guide pulley assemblies.

2. The cable tension buffer device based on the pulley-spring structure according to claim 1 is characterized in that: When the total height of the cable tension buffer device is at a fixed height, the spring assembly expands and contracts up and down inside the cylinder during operation.

3. The cable tension buffer device based on the pulley-spring structure according to claim 2 is characterized in that: When the tension fluctuation on the load-bearing steel cable becomes larger, the length of the spring assembly becomes shorter accordingly; when the tension fluctuation on the load-bearing steel cable becomes smaller, the length of the spring assembly becomes longer accordingly.

4. The cable tension buffer device based on pulley-spring structure according to claim 2, characterized in that: The spring assembly operates in the neutral position when there is no fluctuation in the tension on the load-bearing cable.

5. The cable tension buffer device based on a pulley-spring structure according to any one of claims 1 to 4, characterized in that: The wire rope tension buffer device is used as a pre-processing for the tension control of the load-bearing wire rope, which can reduce the difficulty of controlling the winch and greatly reduce the burden of frequent winch control in severe sea conditions.

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