Self-locking control device for submarine photoelectric composite cable winch

Abstract

The present invention discloses a self-locking control device for a submarine photoelectric composite cable winch, comprising a main frame, a winch drum rotatably disposed within the main frame, one end of the winch drum being coaxially connected to a drive assembly via a main shaft, one side of the drive assembly being connected to an adjustment handwheel via a chain, one side of the adjustment handwheel being connected to a drive sprocket via a chain, and one side of the drive sprocket being engaged with a self-locking disc brake coaxially sleeved on the outside of the main shaft. The present invention arranges a self-locking disc brake circumferentially around the drive main shaft of the winch drum, wherein several wedge-shaped blocks on a movable locking block extending from the self-locking disc brake fit with the main shaft, thereby increasing the fitting area and friction, thereby increasing the braking torque, enabling fixed-point parking, and improving the reliability and safety of the brake. Simultaneously, the self-locking disc brake can be unlocked or parked with the aid of the drive assembly, thereby overcoming the problems of band brakes, the high labor intensity and physical exertion, and the need for a dedicated hydraulic station and dedicated hydraulic oil when using disc brakes.

Description

Technical Field

[0001] The invention belongs to the technical field of ship deck machinery, and in particular relates to a self-locking control device for a submarine photoelectric composite cable winch. Background Art

[0002] Submarine optical fiber composite cable winches are essential for deploying oceanographic instruments. Their performance is crucial for ensuring efficient and successful exploration missions. Research on Chinese drilling platforms revealed that the brake systems used on these winches utilize band brakes. These are lever-type, semi-enclosed brake hubs, where the brake band is controlled by a brake handle to create a closed brake. This type of brake offers advantages: a simple design, ease of fabrication, low maintenance, and the absence of precision components. However, due to structural design issues, operators must work outdoors for extended periods, which is labor-intensive and physically demanding. Furthermore, due to the poor fit between the brake hub and the brake band, the brakes experience a long moment of inertia and poor reliability. Over extended use, the contact between the brake band and the hub causes thermal expansion, leading to reduced braking reliability.

[0003] With the advancement of petroleum technology, the level of automation in equipment has greatly increased. Some submarine optical fiber composite cable winches are now equipped with hydraulic disc brakes. The advantage is that hydraulic disc brakes are integrated with other on-site control systems and instrumentation, forming a modular control system. This also improves the operator's working environment and reduces workload. However, this requires a dedicated hydraulic station and specialized hydraulic oil, resulting in high investment and maintenance costs, and increases the risk of environmental contamination from hydraulic oil leaks. Furthermore, a loss of hydraulic pressure or valve failure can cause brake malfunction or failure. Furthermore, hydraulic disc brakes require a high clearance between the friction pad and the brake disc, requiring precise adjustment parameters. Improper clearance adjustment, or the spring-supported hydraulic brake pads in the hydraulic disc brake caliper, can lead to spring failure over time. The safety clamp is a disc spring structure, and the disc spring needs to be replaced regularly. If the braking torque is affected by the friction plate gap or there is an error in the adjustment of the friction plate gap, the braking torque will be reduced, causing braking time delay and increased braking distance; if the hydraulic oil has poor fluidity at low temperatures in winter, it will also cause braking performance to decline. In short, hydraulic disc brakes have relatively high requirements for working conditions, maintenance technology, and component performance.

[0004] Some submarine optical fiber composite cable winches have their braking devices placed between the motor and the reducer, using methods such as reverse braking or dynamic braking to achieve braking. However, this type of braking has limited braking torque. Due to the load inertia, the cable will continue to rotate for a period of time, making it impossible to achieve a fixed stop for the submarine optical fiber composite cable winch. This can easily break the "delicate" optical fiber composite cable, resulting in the interruption of normal ocean exploration work. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-locking control device for a submarine photoelectric composite cable winch, which solves the problems that existing winches are difficult to park at a fixed point, the labor intensity and physical exertion when using brakes are high, and the use of disc brakes requires a special hydraulic station and special hydraulic oil.

[0006] The technical solution adopted by the present invention is: a self-locking control device for a submarine optoelectronic composite cable winch, comprising a main frame, a winch drum rotatably arranged inside the main frame, one end of the winch drum being coaxially connected to a drive assembly through a main shaft, one side of the drive assembly being connected to an adjusting handwheel through a chain, one side of the adjusting handwheel being connected to a drive sprocket through a chain, and one side of the drive sprocket being engaged with a self-locking disc brake coaxially sleeved on the outside of the main shaft.

[0007] The present invention is also characterized in that:

[0008] The self-locking disc brake includes a disc-shaped fixing ring I and a fixing ring II with openings facing each other and fixed to each other. The centers of the fixing ring I and the fixing ring II are jointly provided with a through-hole in the axial direction and a support ring is coaxially arranged in the through-hole. One end of the support ring extends outward and is fixed to the main frame. The outer wall of the fixing ring II is circumferentially provided with incomplete teeth that mesh with the drive sprocket. Four groups of arc-shaped teeth are evenly spaced and fixed on the inner end wall of the fixing ring II. Four groups of arc-shaped guide grooves that are interconnected are provided on the inner end wall of the fixing ring I corresponding to the four groups of arc-shaped teeth. A T-shaped rod with another horizontal section extending into the fixing ring II is provided in the arc-shaped guide grooves at positions on opposite sides of the fixing ring I. The vertical sections of each T-shaped rod penetrate radially inward along the support ring and are fixedly connected to a movable locking block that can reach the side wall of the main shaft.

[0009] The teeth of the incomplete teeth are correspondingly arranged on the outer side wall of the fixing ring II between each two adjacent groups of arc-shaped teeth.

[0010] The T-shaped rod includes a connecting rod I, one end of which is sleeved with an adjusting wheel located in an arc-shaped guide groove, the other end of which is sleeved with a small gear that can engage with the arc-shaped teeth, and one side of the connecting rod I is vertically fixedly connected to a connecting rod II whose other end is connected to a movable locking block.

[0011] The movable locking block includes a U-shaped seat whose closed end is fixedly connected to the connecting rod II. A wedge-shaped block is slidably fitted on both sides of the open end of the U-shaped seat. The two wedge-shaped blocks form a V-shaped interval on the side close to each other and striped grooves are provided on the side walls close to each other. A clamping spring is fixedly connected between the ends of the two wedge-shaped blocks.

[0012] The arc-shaped teeth include an arc segment body with the same arc direction as the side wall of the fixed ring II. The side wall of the arc segment body is circumferentially provided with teeth that can engage with the pinion. The outer side of the arc segment body is a release section, and the outer side is a locking section. The two adjacent groups of arc-shaped guide grooves are respectively opened corresponding to the locking section and the release section of the two adjacent groups of arc-shaped teeth. The two ends of the arc segment body are transition section I and transition section II respectively, and the arc lengths are equal.

[0013] A gap adjustment platform located on one side of the arc-shaped guide groove is fixedly provided on the inner end wall of the fixing ring I, facing each group of arc-shaped teeth. The gap adjustment platform and the arc-shaped teeth are radially provided with gap adjustment holes.

[0014] The end faces of the fixing ring I and the fixing ring II are provided with corresponding assembly holes spaced apart along the circumferential direction, and the two relative assembly holes are connected by fastening bolts.

[0015] The adjusting hand wheel includes a base, on which a horizontal transmission shaft is rotatably connected. One end of the transmission shaft is sleeved with a transition sprocket I connected to the drive assembly chain with a clearance fit. One side of the transition sprocket I is connected to a handle that is sleeved on the transmission shaft with a clearance fit and keyed thereto through a clutch mechanism. The other end of the transmission shaft is fixedly sleeved with a transition sprocket II connected to the drive sprocket chain.

[0016] The clutch mechanism includes meshing teeth I and meshing teeth II respectively fixed on the handle and the opposite side of the transition sprocket I. The meshing teeth I and meshing teeth II are both annular and coaxial with the transmission shaft and have mutually meshing teeth on the opposite side.

[0017] The beneficial effects of the present invention are as follows: the self-locking control device for the submarine optoelectronic composite cable winch of the present invention arranges a self-locking disc brake circumferentially on the driving main shaft of the winch drum, and several wedge blocks on the movable locking block extending from the self-locking disc brake fit with the main shaft, thereby increasing the fitting area and friction force, making the braking torque larger, achieving fixed-point parking, and improving the reliability and safety of the brake; at the same time, the self-locking disc brake can be unlocked or parked with the help of a drive assembly, overcoming the problems of band brakes, high labor intensity and physical exertion, and the need to equip and use a special hydraulic station and special hydraulic oil when using the disc brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the self-locking control device for a submarine photoelectric composite cable winch of the present invention;

[0019] Figure 2This is a schematic diagram of the structure inside the main frame of the self-locking control device for the submarine photoelectric composite cable winch of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the adjustment hand wheel in the self-locking control device of the submarine photoelectric composite cable winch of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the self-locking disc brake in the self-locking control device of the submarine photoelectric composite cable winch of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the fixing ring II in the self-locking control device of the submarine photoelectric composite cable winch of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the fixing ring I in the self-locking control device for the submarine photoelectric composite cable winch of the present invention;

[0024] Figure 7 It is a cross-sectional schematic diagram of a lock disc brake in the self-locking control device of a submarine photoelectric composite cable winch of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the arc-shaped teeth in the self-locking control device of the submarine photoelectric composite cable winch of the present invention.

[0026] In the figure, 1. Main frame, 2. Winch drum, 3. Drive assembly, 4. Adjustment hand wheel, 5. Self-locking disc brake, 6. Drive sprocket, 7. Main shaft, 8. Chain;

[0027] 4-1. Handle, 4-2. Transition sprocket I, 4-3. Meshing tooth I, 4-4. Meshing tooth II, 4-5. Transition sprocket II, 4-6. Base, 4-7. Drive shaft;

[0028] 5-1. Arc-shaped teeth, 5-2. Pinion, 5-3. Connecting rod I, 5-4. Adjusting wheel, 5-5. Arc-shaped guide groove, 5-6. Connecting rod II, 5-7. Movable locking block, 5-8. Fixing ring I, 5-9. Assembly hole, 5-10. Fixing ring II, 5-11. Fastening bolt, 5-12. Support ring, 5-13. Incomplete teeth;

[0029] 5-1-1. Locking section, 5-1-2. Release section, 5-1-3. Transition section I, 5-1-4. Transition section II, 5-1-5. Gap adjustment hole, 5-1-6. Gap adjustment platform;

[0030] 5-7-1. U-shaped seat, 5-7-2. Wedge block, 5-7-3. Clamping spring. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] The present invention provides a self-locking control device for a submarine photoelectric composite cable winch. Figures 1 to 8 As shown, it includes a main frame 1, in which a winch drum 2 is rotatably mounted. One end of the winch drum 2 is coaxially connected to a drive assembly 3 via a main shaft 7. The drive assembly 3 drives the winch drum 2 in forward or reverse rotation, thereby retrieving and lowering the cable. One side of the drive assembly 3 is connected to an adjustment handwheel 4 via a transverse chain 8. The adjustment handwheel 4 is connected to a drive sprocket 6 via a longitudinal chain 8 (not shown). One side of the drive sprocket 6 engages a self-locking disc brake 5 coaxially mounted on the outside of the main shaft 7.

[0034] Example 2

[0035] The adjustment handwheel 4 includes a base 4-6, to which a horizontal transmission shaft 4-7 is rotatably connected. One end of the transmission shaft 4-7 is loosely coupled to a transition sprocket I 4-2, which is chain-connected to the drive assembly 3. A handle 4-1, loosely coupled to the transmission shaft 4-7 and keyed thereto, is connected to one side of the transition sprocket I 4-2 via a clutch mechanism. The other end of the transmission shaft 4-7 is fixedly coupled to a transition sprocket II 4-5, which is chain-connected to the drive sprocket 6. The clutch mechanism includes meshing teeth I 4-3 and II 4-4, respectively fixed to opposite sides of the handle 4-1 and transition sprocket I 4-2. Both meshing teeth I 4-3 and II 4-4 are annular and coaxial with the transmission shaft 4-7, and have mutually meshing teeth on opposite sides.

[0036] The self-locking disc brake 5 includes a disc-shaped fixing ring I5-8 and a fixing ring II5-10 whose openings are opposite to each other and fixed to each other. The end faces of the fixing ring I5-8 and the fixing ring II5-10 are provided with corresponding assembly holes 5-9 spaced apart along the circumferential direction. The two relative assembly holes 5-9 are connected by fastening bolts 5-11 to facilitate installation and disassembly. A through opening is commonly provided in the center of the fixing ring I5-8 and the fixing ring II5-10 along the axial direction, and a support ring 5-12 is coaxially arranged in the through opening, and one end of the support ring 5-12 extends outward and is fixed to the main frame 1. Four groups of arc-shaped teeth 5-1 are evenly spaced and fixed on the inner end wall of the fixing ring II5-10. The arc-shaped teeth 5-1 include an arc segment body with the same arc direction as the side wall of the fixing ring II5-10, and the side wall of the arc segment body is provided with teeth along the circumferential direction. The outer side of the arc segment body is the release section 5-1-2, and the outer side is the locking section 5-1-1. The two ends of the arc segment body are transition section I5-1-3 and transition section II5-1-4 respectively, and the arc lengths are equal. The outer side wall of the fixed ring II 5-10 is circumferentially provided with incomplete teeth 5-13 that mesh with the drive sprocket 6, and the teeth of the incomplete teeth 5-13 are arranged on the outer side wall of the fixed ring II 5-10 between each two adjacent groups of arc-shaped teeth 5-1; the inner end wall of the fixed ring I 5-8 is provided with four groups of interconnected arc-shaped guide grooves 5-5 corresponding to the four groups of arc-shaped teeth 5-1, and two adjacent groups of arc-shaped guide grooves 5-5 are respectively opened corresponding to the locking section 5-1-1 and the release section 5-1-2 of the two adjacent groups of arc-shaped teeth 5-1. A clearance adjustment platform 5-1-6 is fixedly mounted on the inner end wall of the fixed ring I 5-8, facing each set of arcuate teeth 5-1, and is located on one side of the arcuate guide groove 5-5. Both the clearance adjustment platform 5-1-6 and the arcuate teeth 5-1 are radially provided with clearance adjustment holes 5-1-5. By changing the radial fixed position of the arcuate teeth 5-1 and the clearance adjustment platform 5-1-6, the problem of excessive brake clearance after brake pad wear, which can cause brake failure, is compensated. Within the arcuate guide groove 5-5, two T-shaped rods are mounted on opposite sides of the fixed ring I 5-8, each with its other horizontal section extending into the fixed ring II 5-10. The vertical section of each T-shaped rod extends radially inward along the support ring 5-12 and is fixedly connected to a movable locking block 5-7 that can abut against the side wall of the main shaft 7.

[0037] The T-shaped rod in the self-locking disc brake 5 includes a connecting rod I5-3, one end of which is sleeved with an adjusting wheel 5-4 located in the arc-shaped guide groove 5-5, and the other end of the connecting rod I5-3 is sleeved with a small gear 5-2 that can mesh with the arc-shaped teeth 5-1, and one side of the connecting rod I5-3 is vertically fixedly connected to a connecting rod II5-6 whose other end is connected to the movable locking block 5-7.

[0038] The movable locking block 5-7 in the self-locking disc brake 5 comprises a U-shaped seat 5-7-1, the closed end of which is fixedly connected to a connecting rod II 5-6. A wedge-shaped block 5-7-2 slidably engages each side of the open end of the U-shaped seat 5-7-1. The maximum outward displacement of the two wedge-shaped blocks 5-7-2 is within the inner ring of the support ring 5-12, and the two wedge-shaped blocks 5-7-2 always slide within the U-shaped seat 5-7-1. To enhance the braking effect of the self-locking disc brake 5, the two wedge-shaped blocks 5-7-2 are separated by a V-shaped gap on the adjacent side, and striped grooves are provided on the adjacent side walls. Corresponding striped grooves can also be added to the outer surface of the main shaft 7. A clamping spring 5-7-3 is fixedly connected between the ends of the two wedge-shaped blocks 5-7-2.

[0039] Example 3

[0040] The self-locking control method of the submarine photoelectric composite cable winch of the present invention is as follows: the driving assembly 3 drives the winch drum 2 to rotate forward or reversely to realize the recovery and lowering of the cable, and at the same time, the driving assembly 3 drives the transition sprocket I4-2 to rotate on the transmission shaft 4-7. When braking, the handle 4-1 is pushed inward along the transmission shaft 4-7, so that the meshing teeth I4-3 and the meshing teeth II4-4 are meshed. Since the handle 4-1 is key-connected to the transmission shaft 4-7, the rotation of the transition sprocket I4-2 after meshing can drive the handle 4-1 and the transmission shaft 4-7 to rotate at the same time, thereby driving the transition sprocket II4-5 on the other side of the base 4-6 to rotate, and then driving the drive sprocket 6 to rotate through the longitudinal chain 8. The drive sprocket 6 drives the fixed ring II5-10 to rotate through the meshing incomplete teeth 5-13, so that the meshing arc teeth 5-1 of the pinion 5-2 are rotated from the release section 5-1-2 to the next locking section 5-1-1. In this process, Since the support ring 5-12 is in a fixed state, the T-shaped rod is restricted in the circumferential direction and does not rotate with the fixed ring II 5-10. Instead, its connecting rod II 5-6 extends further into the support ring 5-12 due to the change in the radial position of the two adjacent arc-shaped teeth 5-1. During the movement of the T-shaped rod, the adjusting wheel 5-4 at the other end of the connecting rod I 5-3 limits the moving position of the T-shaped rod according to the path of the arc-shaped guide groove 5-5. After the connecting rod II 5-6 extends into the support ring 5-12, the U-shaped seat 5-7-1 of the movable locking block 5-7 connected thereto extends inward at the same time, and the four wedge blocks 5-7-2 on the two movable locking blocks 5-7 clamp the main shaft 7 from all sides. During the above process, when the drive sprocket 6 drives the fixed ring II 5-10 to rotate until the T-bar is located in the locking section 5-1-1 of the arc-shaped tooth 5-1, the drive sprocket 6 also disengages the teeth of the incomplete tooth 5-13 and is located in the toothless section of the incomplete tooth 5-13. At this time, the self-locking disc brake 5 remains locked. That is, even if the self-locking disc brake 5 vibrates slightly, since the arc length direction of the locking section 5-1-1 is the same arc, it will not affect the clamping force of the movable locking block 5-7 and the locking state of the self-locking disc brake 5. Even if the operator makes an error in the control console, the self-locking disc brake 5 will not automatically unlock. When unlocking is required, the handle 4-1 is pulled out to separate the meshing teeth I 4-3 and the meshing teeth II 4-4, and the fixed ring II 5-10 is manually moved to engage the drive sprocket 6 with the teeth of the incomplete tooth 5-13. The clutch mechanism is re-engaged and the fixed ring II 5-10 is driven by the power of the drive assembly 3 to rotate based on the above-mentioned similar principle to enter the unlocking state. In the above process, changing the unlocking or parking state only requires slightly moving the fixing ring II 5-10, which reduces labor intensity.

[0041] In the above manner, the self-locking control device for the submarine optoelectronic composite cable winch of the present invention arranges a self-locking disc brake 5 circumferentially on the driving main shaft 7 of the winch drum 2, and several wedge blocks 5-7-2 on the movable locking block 5-7 extending from the self-locking disc brake 5 fit with the main shaft 7, thereby increasing the fitting area and friction, making the braking torque larger, achieving fixed-point parking, and improving the reliability and safety of the brake; at the same time, the self-locking disc brake 5 can be unlocked or parked with the help of the drive assembly 3, overcoming the problems of band brake, high labor intensity and physical exertion, and the need to be equipped with a special hydraulic station and special hydraulic oil when using the disc brake.

Claims

1. The self-locking control device of submarine photoelectric composite cable winch is characterized in that: The invention comprises a main frame (1), a winch drum (2) is rotatably arranged in the main frame (1), one end of the winch drum (2) is coaxially connected to a drive assembly (3) through a main shaft (7), one side of the drive assembly (3) is connected to an adjusting hand wheel (4) through a chain, one side of the adjusting hand wheel (4) is connected to a drive sprocket (6) through a chain, one side of the drive sprocket (6) is engaged with a self-locking disc brake (5) coaxially sleeved outside the main shaft (7), the self-locking disc brake (5) comprises a disc-shaped fixing ring I (5-8) and a fixing ring II (5-10) with openings facing each other and fixed to each other, the centers of the fixing ring I (5-8) and the fixing ring II (5-10) are jointly provided with a through opening along the axial direction, and a support ring (5-12) is coaxially arranged in the through opening, one end of the support ring (5-12) extends outward and is fixed to the main frame (1), the fixing ring II ( The outer wall of the fixing ring Ⅱ (5-10) is provided with incomplete teeth (5-13) meshing with the driving sprocket (6) along the circumferential direction, and the inner end wall of the fixing ring Ⅱ (5-10) is evenly spaced and fixed with four groups of arc-shaped teeth (5-1), and the teeth of the incomplete teeth (5-13) are correspondingly provided on the outer wall of the fixing ring Ⅱ (5-10) between each two adjacent groups of arc-shaped teeth (5-1). The inner end wall of the fixing ring Ⅰ (5-8) is provided with four groups of mutually connected arc-shaped guide grooves (5-5) corresponding to the four groups of arc-shaped teeth (5-1), and the arc-shaped guide grooves (5-5) are respectively provided with another horizontal section of a T-shaped rod extending into the fixing ring Ⅱ (5-10) at positions on opposite sides of the fixing ring Ⅰ (5-8), and the vertical section of each T-shaped rod is radially inwardly penetrated along the support ring (5-12) and fixedly connected with a movable locking block (5-7) that can reach the side wall of the main shaft (7).

2. The self-locking control device for a submarine photoelectric composite cable winch according to claim 1, characterized in that: The T-shaped rod comprises a connecting rod I (5-3), one end of which is sleeved with an adjusting wheel (5-4) located in an arc-shaped guide groove (5-5), the other end of which is sleeved with a small gear (5-2) that can mesh with the arc-shaped teeth (5-1), and one side of the connecting rod I (5-3) is vertically fixedly connected to a connecting rod II (5-6) whose other end is connected to a movable locking block (5-7).

3. The self-locking control device for a submarine photoelectric composite cable winch according to claim 2, characterized in that: The movable locking block (5-7) comprises a U-shaped seat (5-7-1) whose closed end is fixedly connected to the connecting rod II (5-6); a wedge-shaped block (5-7-2) is slidably engaged on both sides of the open end of the U-shaped seat (5-7-1); a V-shaped interval is formed on the side where the two wedge-shaped blocks (5-7-2) are close to each other, and striped grooves are provided on the side walls close to each other; a clamping spring (5-7-3) is fixedly connected between the ends of the two wedge-shaped blocks (5-7-2).

4. The self-locking control device for a submarine photoelectric composite cable winch according to claim 2, characterized in that: The arc-shaped teeth (5-1) include an arc segment body having the same arc direction as the side wall of the fixing ring II (5-10), and the side wall of the arc segment body is provided with teeth that can mesh with the pinion (5-2) along the circumferential direction. The outer side of the arc segment body is a release section (5-1-2), and the outer side is a locking section (5-1-1). Two adjacent groups of arc-shaped guide grooves (5-5) are respectively opened corresponding to the locking section (5-1-1) and the release section (5-1-2) of the two adjacent groups of arc-shaped teeth (5-1). The two ends of the arc segment body are transition section I (5-1-3) and transition section II (5-1-4), and the arc lengths are equal.

5. The self-locking control device for submarine photoelectric composite cable winch according to claim 1, characterized in that: A gap adjustment platform (5-1-6) located on one side of the arc-shaped guide groove (5-5) is fixedly provided on the inner end wall of the fixed ring I (5-8) facing each group of arc-shaped teeth (5-1), and gap adjustment holes (5-1-5) are radially opened on the gap adjustment platform (5-1-6) and the arc-shaped teeth (5-1).

6. The self-locking control device for submarine photoelectric composite cable winch according to claim 1, characterized in that: The end surfaces of the fixing ring I (5-8) and the fixing ring II (5-10) are provided with corresponding assembly holes (5-9) at intervals along the circumferential direction, and the two relative assembly holes (5-9) are connected by fastening bolts (5-11).

7. The self-locking control device for a submarine photoelectric composite cable winch according to claim 1, characterized in that: The adjusting hand wheel (4) comprises a base (4-6), a horizontal transmission shaft (4-7) being rotatably connected to the base (4-6), one end of the transmission shaft (4-7) being loosely sleeved with a transition sprocket I (4-2) connected to a chain of the drive assembly (3), one side of the transition sprocket I (4-2) being connected to a handle (4-1) loosely sleeved on the transmission shaft (4-7) and key-connected thereto via a clutch mechanism, and the other end of the transmission shaft (4-7) being fixedly sleeved with a transition sprocket II (4-5) connected to a chain of the drive sprocket (6).

8. The self-locking control device for submarine photoelectric composite cable winch according to claim 7, characterized in that: The clutch mechanism comprises meshing teeth I (4-3) and meshing teeth II (4-4) respectively fixed on opposite sides of the handle (4-1) and the transition sprocket I (4-2); the meshing teeth I (4-3) and the meshing teeth II (4-4) are both annular and coaxial with the transmission shaft (4-7) and have mutually meshing teeth on opposite sides.

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