A three-drum traction winch

Abstract

This invention discloses a three-coil traction winch, comprising a traction winch frame and a winch transmission system mounted on the frame. A driven winch, a small winch, and a driving winch are sequentially mounted on the shaft of the drive system. The cable passes through the driving winch end, and the driven and driving winches rotate synchronously in the same direction. Simultaneously, the small winch rotates synchronously in the opposite direction to both the driven and driving winches. The traction cable passes sequentially through the driving winch, the small winch, and the driven winch before exiting from the driven winch end. This three-coil traction winch reduces the cable tension at the exit end to half that of a two-coil traction winch, thus increasing the cable tension reduction capacity by nearly 100%. With the same cable tension reduction capacity, the number of winch slots can be reduced, thereby reducing the overall weight of the winch device and achieving weight reduction. The traction winch of this invention is smaller and more compact than a two-coil winch, and the number of winch slots can be reduced by nearly half.

Description

Technical Field

[0001] This invention relates to a three-winding winch, belonging to the field of marine engineering auxiliary machinery technology. Background Technology

[0002] With the increasing scarcity of global resources, competition for marine resources worldwide is intensifying. The 21st century has become the century of the marine economy, and countries around the world are committed to developing their marine economies. Consequently, the demand for new oceanographic research vessels and deep-sea equipment is constantly rising. Deep-sea research winches are one of the essential core pieces of equipment on a research vessel, primarily designed to effectively solve problems related to cable laying and tension reduction in deep-sea research cables, enabling research teams to work efficiently.

[0003] Existing high-capacity cable reeling systems typically employ dual-winch traction winches to lift the load, reduce cable tension, and enable the storage winch to hold a large amount of cable. The traction winch releases cable tension at the load end based on friction, allowing the cable to enter the storage winch with less tension. Its tension reduction capability is related to the winch's wrap angle and the coefficient of friction between the cable and the reel; that is, the greater the wrap angle and the coefficient of friction between the cable and the reel, the lower the cable tension exiting the traction winch. However, currently, the wrap angle of dual-winch traction winches is essentially a fixed value, and the coefficient of friction is related to the properties of the winch and cable materials. Therefore, it is currently difficult to further improve the tension reduction capability of dual-winch traction winches. Summary of the Invention

[0004] Purpose of the invention: In view of the shortcomings of the prior art, the purpose of this invention is to provide a three-winding winch.

[0005] Technical solution: The present invention discloses a three-winch traction winch, comprising a traction winch frame, on which a winch transmission system is installed. A driven winch, a small winch, and a driving winch are sequentially installed on the shaft of the winch transmission system. The cable passes through the driving winch end, and the driven winch and the driving winch rotate synchronously in the same direction. At the same time, the small winch rotates synchronously in the opposite direction to the driven winch and the driving winch. The traction cable passes through the driving winch, the small winch, and the driven winch and exits from the driven winch end.

[0006] Furthermore, the shaft of the winch transmission system passes through the driven winch and the driving winch, and synchronous pulleys are respectively installed on the synchronous pulleys, with a synchronous belt fitted on the synchronous pulleys.

[0007] Furthermore, a reducer is installed on the other side of the shaft of the winch transmission system where the drive winch is located, and a motor is installed on the other end of the reducer.

[0008] Furthermore, a timing belt tensioner mechanism is installed at the bottom of the traction winch frame, and the upper part of the timing belt tensioner mechanism abuts against the timing belt.

[0009] Furthermore, the diameter of the small winch is smaller than the diameters of the driven winch and the driving winch.

[0010] Furthermore, the driven winch has a plurality of first grooves, the driving winch has a plurality of second grooves, and the small winch has a plurality of third grooves.

[0011] Furthermore, the first, second, and third grooves are of the same size, and are staggered relative to each other.

[0012] Furthermore, the first and second trenches are offset by 1 / 2 trench distance, and the third trench is offset by 1 / 4 trench distance.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0014] (1) The three-winding winch of the present invention can reduce the tension at the cable outlet to 1 / 2 of the tension at the cable outlet of the double-winding winch, thus increasing the cable tension reduction capacity of the traction winch by nearly 100%.

[0015] (2) Under the same cable stress reduction capacity, the winch slot of the three-winch traction winch of the present invention can be reduced, thereby reducing the weight of the entire winch device and achieving the purpose of lightweighting.

[0016] (3) Since the winch slot can be reduced by nearly half, the traction winch is smaller and more compact than the double winch. Attached Figure Description

[0017] Figure 1 Overall structural diagram of the three-winch traction winch of this invention;

[0018] Figure 2 Top sectional view of the three-winch traction winch of this invention;

[0019] Figure 3 Schematic diagram of the three-spindle cable winding of the present invention;

[0020] Figure 4 Schematic diagram of the working principle of the three-winch traction winch of this invention;

[0021] Figure 5 A schematic diagram of the wrap angle of a dual-winch traction winch in the prior art. Detailed Implementation

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0023] Example 1

[0024] As attached Figure 1-2As shown, the present invention discloses a three-winch traction winch, comprising a driven winch 1, a driving winch 2, a small winch 3, a synchronous pulley 4, a synchronous belt 5, a synchronous belt tensioning mechanism 6, a traction winch frame 7, a winch transmission system 8, a reducer 9, and a motor 10. The winch transmission system 8 is mounted on the traction winch frame 7. The driven winch 1, driving winch 2, and small winch 3 are respectively mounted on the winch transmission system 8 via shafts. The cable passes through the driving winch 2 end. The driven winch 1 and driving winch 2 rotate synchronously in the same direction, while the small winch 3 rotates synchronously in the opposite direction to the driven winch 1 and driving winch 2. The traction cable passes sequentially through the driving winch 2, small winch 3, and driven winch 1 before exiting from the driven winch 1 end. The shaft of the winch transmission system 8 passes through the driven winch 1 and driving winch 2, and synchronous pulleys 4 are mounted on them respectively. The synchronous belt 5 is fitted onto the synchronous pulleys 4. The reducer 9 is installed on the other side of the shaft of the winch transmission system 8 corresponding to the drive winch 2. The motor 10 is installed on the reducer 9. The synchronous belt tensioning pulley mechanism 6 is installed at the bottom of the traction winch frame 7. The upper part of the synchronous belt tensioning pulley mechanism 6 abuts against the synchronous belt 5. The diameter of the small winch 3 is smaller than the diameter of the driven winch 1 and the drive winch 2.

[0025] like Figure 3 As shown, the driven winch 1 has a first groove 1-1, the driving winch 2 has a second groove 2-1, and the small winch 3 has a third groove 3-1. The first groove 1-1, the second groove 2-1, and the third groove 3-1 are of the same size. The positions of the first groove 1-1, the second groove 2-1, and the third groove 3-1 are staggered. The first groove 1-1 and the second groove 2-1 are staggered by 1 / 2 groove distance, and the third groove 3-1 is staggered by 1 / 4 groove distance to ensure that the cable can be evenly distributed on the three winches when it is wound 11 times.

[0026] Working mechanism:

[0027] When the system is working normally, the driving winch 2 and the driven winch 1 rotate synchronously and in the same direction. When the cable winds along the groove, the tensions on the inlet and outlet cables are represented by F and F', respectively. The wrap angle between cables 2-1 on the second groove is represented by α, and the coefficient of friction is represented by f. According to relevant literature (see Shen Aqiang. Structural Design and Mechanical Analysis of Traction Winch for Tethered Balloon System [J]. Machine Tool & Hydraulics, 2020, 4), the outlet cable tension F' and the inlet cable tension F satisfy the following relationship:

[0028] F'=F / e af

[0029] Once the cable material and winch material are selected, the coefficient of friction between the cable and the winch, and the wrap angle of the cable tension in a single operation, are uniquely determined.

[0030] like Figure 4It can be seen that the cable material of this invention is copper-clad steel stranded wire, and the materials of the driven winch 1, the driving winch 2, and the small winch 3 are all ZG345. The total wrap angle α is calculated by the following formula:

[0031] a = a1 + a2 + a3

[0032] If a1 = 270°, a2 = 180°, a3 = 270°, the total envelope angle a = 720° (4π).

[0033] Assuming a friction coefficient of 0.1, the cable tension in the case of a single groove is F' = F / 3.51, meaning that a single groove can reduce the cable tension by 3.51 times.

[0034] As attached Figure 5 As shown, in existing technologies, due to the use of a double twisted-spindle mechanism, the wrap angle α is constant at 2π. Therefore, the cable tension F' in the single-groove case is calculated to be F / 1.87. Compared to the tension reduction effect of existing technologies, the tension reduction effect of this invention is improved by nearly two times.

Claims

1. A three-capstan draw winch, characterized in that, The three-coil traction winch includes a traction winch frame (7), on which a winch transmission system (8) is installed. A driven winch (1), a small winch (3), and a driving winch (2) are sequentially mounted on the shaft of the winch transmission system (8). The cable passes through the end of the driving winch (2). The driven winch (1) and the driving winch (2) rotate synchronously in the same direction. Simultaneously, the small winch (3) rotates synchronously in the opposite direction to the driven winch (1) and the driving winch (2). The traction cable passes sequentially through the driving winch (2), the small winch (3), and the driven winch (1) before exiting from the end of the driven winch (1). The driven winch (1) has several first grooves (1-1), the driving winch (2) has several second grooves (2-1), and the small winch (3) has several third grooves (3-1). The first grooves (1-1), the second grooves (2-1), and the third grooves (3-1) are of the same size, and the first grooves (1-1), the second grooves (2-1), and the third grooves (3-1) are staggered relative to each other. The first grooves (1-1) and the second grooves (2-1) are staggered by 1 / 2 groove distance, and the third grooves (3-1) are staggered by 1 / 4 groove distance.

2. A three-capstan draw winch according to claim 1, characterised in that, The shaft of the winch transmission system (8) passes through the driven winch (1) and the driving winch (2) and is respectively equipped with a synchronous pulley (4), and a synchronous belt (5) is fitted on the synchronous pulley (4).

3. The three-winch traction winch according to claim 1, characterized in that, A reducer (9) is installed on the other side of the shaft of the winch transmission system (8) where the drive winch (2) is located, and a motor (10) is installed on the other end of the reducer (9).

4. The three-winch traction winch according to claim 1, characterized in that, The bottom of the traction winch frame (7) is equipped with a synchronous belt tensioning wheel mechanism (6), and the upper part of the synchronous belt tensioning wheel mechanism (6) abuts against the synchronous belt (5).

5. The three-winch traction winch according to claim 1, characterized in that, The diameter of the small winch (3) is smaller than the diameter of the driven winch (1) and the driving winch (2).

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