Automatic brake control system for electric winches used in marine vessels

Abstract

The present invention belongs to the technical field of ship winch brake system, and discloses an automatic brake control system for electric winches for marine ships, including an adjustment box and a transmission belt. The adjustment box and the inner and outer side walls of the transmission belt are respectively provided with a first gear tooth and a second gear tooth. The first gear tooth has a plurality of teeth, which are evenly distributed around the outer side of the transmission belt, and the second gear tooth has a plurality of teeth, which are linearly distributed on the inner side of the transmission belt. The present invention sets three brake pads and a belt drive mode. When braking for a short time, a single brake pad can be used for braking. When the braking operation is maintained for a long time, the transmission belt can be used to drive the three brake pads to perform intermittent braking operations in sequence. The second gear tooth can ensure that one brake pad is always in contact with the brake disc during braking, which effectively reduces the wear of the brake pad and prolongs the service life of the brake pad.

Description

Technical Field

[0001] The invention belongs to the technical field of ship winch brake systems, and in particular relates to an automatic brake control system for an electric winch used in marine ships. Background Art

[0002] A ship winch, also known as a marine winch or hoist, is a small and light lifting device that uses a drum to wind a wire rope or chain to lift or pull heavy objects. It is widely used on ships and is a necessary deck equipment on board, mainly used for operations such as anchoring, mooring, towing, lifting cargo and pulling cables.

[0003] For the winch used on ships to tow light and small cargoes, the brakes need to be frequently used to control the winch's hoisting speed when the winch is in use to ensure that the cargo does not shake or sway drastically when towing. However, frequent braking for a long time will cause the brake pads to wear quickly, requiring staff to frequently replace the brake pads to ensure the normal use of the winch. Summary of the invention

[0004] In view of the deficiencies of the prior art, the purpose of the present invention is to provide an automatic brake control system for an electric winch for marine vessels, which solves the problem in the prior art that brake pads wear out quickly and need to be replaced frequently.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] Automatic brake control system for electric winches for marine vessels, including adjustment boxes and drive belts;

[0007] An adjustment box, wherein the inner rear wall of the adjustment box is connected to three rotating rods through bearings, and the outer walls of the three rotating rods are respectively installed with a second gear, a third gear and a fourth gear, and the outer walls of the three rotating rods are all surrounded by a rope, and one end of the rope is fixedly connected to the outer wall of the rotating rod;

[0008] A transmission belt, the transmission belt is installed around the outer walls of the second gear, the third gear and the fourth gear, the inner and outer walls of the transmission belt are respectively installed with a first gear tooth and a second gear tooth, the first gear tooth has a plurality of teeth, which are evenly distributed around the outer side of the transmission belt, and the second gear tooth has a plurality of teeth, which are linearly distributed on the inner side of the transmission belt;

[0009] The transmission belt is controlled to rotate, driving the No. 2 gear teeth to intermittently mesh with the No. 2 gear, the No. 3 gear and the No. 4 gear in sequence.

[0010] In some disclosures, a No. 1 gear is installed on the inner rear wall of the adjustment box, the No. 1 gear is located on the outside of the transmission belt, and the No. 1 gear is meshed with the No. 1 gear teeth.

[0011] In some disclosures, the bottom of the adjustment box is fixedly connected to a bottom plate, the top of the bottom plate is fixedly connected to a No. 1 plate, and the No. 1 plate is installed opposite to the adjustment box, a driving shaft is installed through the outer wall of the No. 1 plate, and the other end of the driving shaft passes through the interior of the adjustment box, a cable is wrapped around the outer wall of the driving shaft, two brake discs are installed on the outer wall of the driving shaft, and the two brake discs are respectively close to the No. 1 plate and the outer wall of the adjustment box, a driving gear is installed on the end face of the driving shaft close to the adjustment box, three fixed blocks are installed on the inner wall of the adjustment box, and the three fixed blocks are all located on the outside of the transmission belt.

[0012] In some disclosures, a drive box is installed on the top of the base plate, a drive motor is installed on the inner wall of one side of the drive box, a reducer is installed on the inner wall of the other side of the drive box, and the drive motor is connected to the reducer in a transmission manner, a servo motor is fixedly installed on the inner wall of one side of the drive box, the servo motor is located below the drive motor, a transmission shaft is installed on the output end of the servo motor, and one end of the transmission shaft extends into the interior of the adjustment box, one end of the transmission shaft is fixedly connected to the outer wall of the No. 1 gear, a No. 5 gear is installed on the output end of the reducer, and the No. 5 gear is meshed with the drive gear.

[0013] In some disclosures, the outer wall of the adjustment box is fixedly installed with multiple fixing rods, and the first brake pad and the second brake pad are slidably connected to the outer wall of the fixing rod. The first brake pad and the second brake pad are symmetrically installed with the brake disc as the center, and the outer wall of the adjustment box is installed with three rotating shafts, one end of the three rotating shafts is respectively fixedly connected to one end of the three rotating rods, and the rotating shaft is provided with positive and negative thread grooves at both ends with the brake disc as the center, and the outer wall of the positive and negative thread grooves is nested with two threaded seats, and the two threaded seats are respectively fixedly connected to the first brake pad and the second brake pad.

[0014] In some disclosures, a cleaning box is installed above the adjustment box, a through hole is opened at the bottom of the cleaning box, and the brake disc passes through the through hole to enter the interior of the cleaning box, and baffles are fixedly installed on both sides of the through hole.

[0015] In some disclosures, hydraulic rods are installed on the inner walls of both sides of the cleaning box, an inclined cleaning plate is fixedly installed at one end of the hydraulic rod, a triangular scraping plate is installed on the side above the cleaning plate close to the through hole, and a wiping cloth is installed at the bottom of the cleaning plate.

[0016] In some disclosures, two driven shafts are installed on the inner wall of the adjustment box, and the two driven shafts are located on both sides of the driving shaft. The outer wall of the driven shaft is installed with gear No. 6, the outer wall of the driving shaft is installed with gear No. 7, and gear No. 7 is meshed with gear No. 6. An emergency wheel is fixedly installed on the outer wall of the driven shaft, and a plurality of grooves are provided on the outer wall of the emergency wheel. A spring is installed on the inner bottom wall of the groove, and one end of the spring is installed with a latch tooth that can mesh with gear No. 2 and gear No. 3.

[0017] In some disclosures, a plurality of slide rails are installed on the inner wall of the adjustment box, a telescopic cylinder is installed on the outer side of the slide rails, a sliding shaft is placed inside the slide rails, a limit gear is installed on the outer wall of the sliding shaft, a limit ring is sleeved on the outer wall of the sliding shaft, and the limit ring is located on the outer side of the slide rail, the sliding shaft and the limit ring form a ratchet mechanism, and the telescopic end of the telescopic cylinder is fixedly connected to the outer wall of the limit ring.

[0018] In some disclosures, a guide wheel is installed on the outer wall of the fixed block, and a long slide groove is provided on the outer wall of the fixed block. A circular groove is opened at one end of the long slide groove, and an L-shaped sliding column is slidably installed on the inner wall of the long slide groove. The sliding column is connected to the rotating rod and the guide wheel by a rope, and the outer wall of the transmission belt is fixedly connected to a pushing block.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] A fixed connection is one where the parts or components are fixed without any relative movement;

[0021] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0022] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and convenient assembly and disassembly. It is widely used in the fields of mechanical engineering and connection structures.

[0023] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0024] Beneficial effects of the present invention:

[0025] The present invention arranges three brake pads and a belt transmission method. When braking for a short time, braking can be performed by a single brake pad. When the braking operation is maintained for a long time, the three brake pads can be driven by the transmission belt to perform intermittent braking operations in sequence. The No. 2 gear teeth can ensure that one brake pad is always in contact with the brake disc during braking, thereby effectively reducing the wear of the brake pad and extending the service life of the brake pad.

[0026] The present invention can effectively prevent a single brake pad from being overheated and damaged due to long-term braking by providing three brake pads, thereby ensuring the safety of the winch.

[0027] The present invention can scrape off the oil stains or sundries adhered to the brake disc by arranging a cleaning box, thereby ensuring that the brake disc is clean and tidy. The seawater on the surface of the brake pad can also be wiped clean by a wiping cloth to prevent the seawater from corroding the brake disc and also prevent the brake disc and the brake pad from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a driving gear portion of an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the cross-sectional structure of a drive box according to an embodiment of the present invention;

[0032] Figure 4 The embodiment of the present invention Figure 1 The enlarged structural diagram of part A in the middle;

[0033] Figure 5 is a schematic diagram of the cross-sectional structure of an adjustment box according to an embodiment of the present invention;

[0034] Figure 6 is a schematic diagram of the cross-sectional structure of an emergency wheel according to an embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the sliding groove part of an embodiment of the present invention;

[0036] Figure 8 is a schematic diagram of the internal structure of a cleaning box according to an embodiment of the present invention;

[0037] Fig. 9 It is a partial structural schematic diagram of a fixed block according to an embodiment of the present invention.

[0038] In the figure: 1. Bottom plate; 11. Plate No. 1; 12. Active shaft; 13. Cable; 14. Brake disc; 15. Driving gear; 2. Driving box; 21. Driving motor; 22. Reducer; 23. Servo motor; 24. Gear No. 5; 25. Transmission shaft; 3. Adjustment box; 31. Fixed rod; 32. First brake pad; 33. Rotating shaft; 34. Positive and negative thread groove; 35. Second brake pad; 4. Cleaning box; 41. Through hole; 42. Baffle; 5. Cleaning plate; 51. Scraper plate; 52. Wiping cloth; 53. Hydraulic rod; 6. Driven shaft ; 62. Emergency wheel; 63. Gear No. 6; 64. Groove; 65. Spring; 66. Clamp; 67. Gear No. 7; 7. Gear No. 1; 70. Rotating rod; 71. Gear No. 2; 72. Gear No. 3; 73. Gear No. 4; 74. Transmission belt; 75. Gear No. 8; 76. Gear No. 9; 77. Rope; 8. Slide rail; 81. Telescopic cylinder; 82. Limiting ring; 83. Sliding shaft; 84. Limiting gear; 9. Fixed block; 91. Guide wheel; 92. Long slide groove; 93. Circular groove; 94. Sliding column; 95. Push block. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1 , Figure 4 , Figure 5 and Fig. 9, an automatic brake control system for an electric winch for marine vessels, comprising an adjustment box 3 and a transmission belt 74, an adjustment box 3, an inner rear wall of the adjustment box 3 is connected with three rotating rods 70 through a bearing, the outer walls of the three rotating rods 70 are respectively installed with a second gear 71, a third gear 72 and a fourth gear 73, the outer walls of the three rotating rods 70 are all surrounded by a rope 77, one end of the rope 77 is fixedly connected to the outer wall of the rotating rod 70, and a transmission belt 74 is installed around the outer walls of the second gear 71, the third gear 72 and the fourth gear 73 The inner and outer walls of the transmission belt 74 are respectively provided with an eighth gear 75 and a ninth gear 76. The eighth gear 75 has a plurality of gears which are evenly distributed around the outer side of the transmission belt 74. The ninth gear 76 has a plurality of gears which are linearly distributed on the inner side of the transmission belt 74. The transmission belt 74 is controlled to rotate, and the ninth gear 76 is driven to intermittently mesh with the second gear 71, the third gear 72 and the fourth gear 73 in sequence. The rear wall inside the adjustment box 3 is provided with a first gear 7, which is located on the outer side of the transmission belt 74, and the first gear 7 is connected to the eighth gear 75. The gear 75 is meshed, and a plurality of fixed rods 31 are fixedly installed on the outer wall of the adjustment box 3. The first brake pad 32 and the second brake pad 35 are slidably connected on the outer wall of the fixed rod 31. The first brake pad 32 and the second brake pad 35 are symmetrically installed with the brake disc 14 as the center. Three rotating shafts 33 are installed on the outer wall of the adjustment box 3. One end of the three rotating shafts 33 is fixedly connected to one end of the three rotating rods 70 respectively. The rotating shaft 33 is provided with positive and negative thread grooves 34 at both ends with the brake disc 14 as the center. Two threaded seats are nested on the outer wall of the positive and negative thread grooves 34. The two threaded seats are fixedly connected to the first brake pad 32 and the second brake pad 35 respectively. Three fixed blocks 9 are installed on the inner wall of the adjustment box 3, and the three fixed blocks 9 are all located on the outside of the transmission belt 74. A guide wheel 91 is installed on the outer wall of the fixed block 9. A long slide groove 92 is provided on the outer wall of the fixed block 9. A circular groove 93 is opened at one end of the long slide groove 92. An L-shaped sliding column 94 is slidably installed on the inner wall of the long slide groove 92. The sliding column 94 is connected to the rotating rod 70 and the guide wheel 91 through a rope 77. A pushing block 95 is fixedly connected to the outer wall of the transmission belt 74.

[0041] Specifically, Figure 5For example, when braking for a short time, the first gear 7 drives the transmission belt 74 to rotate through the eighth gear 75, and the transmission belt 74 rotates on the outer walls of the second gear 71, the third gear 72 and the fourth gear 73. At the same time, the ninth gear 76 drives the third gear 72 to rotate, and the rotation of the third gear 72 drives the rotating shaft 33 to rotate. During this process, the rotating rod 70 rotates at the same time, driving the rope 77 to wrap around the outer wall of the rotating rod 70, and the rotating shaft 33 rotates through the positive and negative thread grooves 34 to drive the second brake pad 35 and the first brake pad 32 to approach each other. , so that the first brake pad 32 and the second brake pad 35 contact the brake disc 14 and brake, and the brake disc 14 is braked. When the brake is released, the servo motor 23 reverses to drive the first gear 7 and the transmission belt 74 to reverse, which can drive the rotating rod 70 and the rotating shaft 33 to reverse, so that the first brake pad 32 and the second brake pad 35 are separated from each other, and the braking state is released. The positions of the second gear 71, the third gear 72 and the fourth gear 73 can be collinear or collinear, so that the ninth gear 76 on the inner side of the transmission belt 74 is intermittently meshed with the three gears;

[0042] When the brake is applied for a long time, the first gear 7 continues to rotate. At this time, the ninth gear 76 passes through the second gear 71, the third gear 72 and the fourth gear 73 in sequence. After the ninth gear 76 contacts the previous gear and drives the gear to rotate 2 circles, the rope 77 is wrapped around the rotating rod 70. The rope 77 moves toward the rotating rod 70 through the guide wheel 91 and the sliding column 94 until the sliding column 94 moves to one end of the long slide groove 92. When the ninth gear 76 begins to contact and mesh with the next gear and the ninth gear 76 begins to separate from the previous gear, the pushing block 95 begins to squeeze the sliding column 94. The sliding column 94 begins to move from the end of the long slide groove 92 close to the rotating rod 70 to the end away from the rotating rod 70. At the same time, due to the pulling of the sliding column 94, the rope 77 pulls the rotating rod 70 to rotate in the opposite direction through the guide wheel 91. When the sliding column 94 enters the circular groove 93, the rotating rod 70 returns to the initial position. When the sliding post 94 in the circular groove 93 can rotate, the pushing block 95 pushes the sliding post 94 to rotate, and then passes over the sliding post 94. Through the above steps, the rotating rod 70 can return to its original position after the brake rotation, thereby achieving that during long-term braking, the three brake pads can be contacted with the brake disc 14 in turn through the continuous rotation of the transmission belt 74 to brake. When one group of brake pads stops contacting the brake disc 14, it means that the transmission belt 74 has been disengaged from the corresponding gear. At this time, the rotating rod 70 and the rotating shaft 33 are reversed back to the original position under the action of the rope 77, and the two groups of brake pads move away from each other and return to their original positions. Through the above steps, the brake pads are replaced in turn during the braking process to reduce the continuous contact of a single brake pad. The above intermittent braking method can effectively extend the service life of the brake pad and prevent the occurrence of overheating of a single brake pad due to continuous use.

[0043] The resetting function of the rotating rod 70 is realized by pulling the rotating rod 70 with the rope 77. Since the length of the rope 77 is fixed, the length of the long slide groove 92 is fixed, thereby ensuring that the moving distance of the sliding column 94 pulling the rope 77 is fixed, the rotating rod 70 and the gear thereon can be accurately restored to the initial state during the reversal of the rotating rod 70, which facilitates the next meshing of the transmission belt 74 with the gear, and prevents the gear from being stuck with the ninth gear 76 of the transmission belt 74;

[0044] In response to the above-mentioned resetting of the rotating rod 70, the present device can also be reset by installing a torsion spring on the outer wall of the rotating rod 70. However, there are many problems with the method of adding a torsion spring. First, the torsion spring bears a large load. When used repeatedly, especially when the present device is braked for a long time, the torsion spring will be frequently used to drive the rotating rod 70 to reset, which will cause metal fatigue of the torsion spring, resulting in inaccurate reset, and jamming between the gear and the ninth gear 76. Secondly, the torsion spring is used less frequently. According to the general data in the industry, it can be roughly calculated that the average number of times the torsion spring suffers from metal fatigue is between 8,000 and 20,000 times of use, and the service life of the brake pad can be used for tens of thousands of kilometers. It can be concluded that the use of torsion springs will require more frequent replacement. Therefore, a rope 77 is used in this application. A rope made of steel wire rope or other high-strength material can be used to greatly extend the service life of the present device. By limiting the moving distance of the rope 77, the rotating rod 70 can be accurately reset. At the same time, the number of maintenance times can be reduced, thereby improving the efficiency of the device.

[0045] In addition, the transmission belt 74 in the present device is located on the outside of the second gear 71, the third gear 72 and the fourth gear 73. Compared with the situation where the three sets of gears are arranged on the outside of the transmission belt 74, the contact area between the ninth gear 76 and the three gears during rotation can be effectively increased, thereby ensuring the transmission of power and preventing slipping due to the small contact area.

[0046] See also Figure 5 and Figure 7 A plurality of slide rails 8 are installed on the inner wall of the adjustment box 3, a telescopic cylinder 81 is installed on the outer side of the slide rail 8, a sliding shaft 83 is installed inside the slide rail 8, a limit gear 84 is installed on the outer wall of the sliding shaft 83, a limit ring 82 is sleeved on the outer wall of the sliding shaft 83, and the limit ring 82 is located on the outer side of the slide rail 8, the sliding shaft 83 and the limit ring 82 form a ratchet mechanism, and the telescopic end of the telescopic cylinder 81 is fixedly connected to the outer wall of the limit ring 82.

[0047] Specifically, during short-term braking, the servo motor 23 rotates forward to drive one set of brake pads to brake. When the brake stops, the servo motor 23 reverses, and at the same time the telescopic cylinder 81 contracts, driving the limit ring 82 and the sliding shaft 83 to slide on the outer wall and the inner part of the slide rail 8, so that the limit gear 84 is separated from the No. 8 gear 75 on the outer wall of the transmission belt 74. At this time, the transmission belt 74 can reverse. When a long-term braking operation is performed, the telescopic cylinder 81 extends to drive the limit gear 84 to contact the No. 8 gear 75. Since the sliding shaft 83 and the limit ring 82 form a ratchet mechanism, the transmission belt 74 cannot reverse during the braking process or when the brake stops, thereby preventing slipping during the braking process.

[0048] See also Figure 1 , Figure 2 and Figure 3 The bottom of the adjustment box 3 is fixedly connected with a bottom plate 1, the top of the bottom plate 1 is fixedly connected with a No. 1 plate 11, and the No. 1 plate 11 is installed opposite to the adjustment box 3. A driving shaft 12 is installed through the outer wall of the No. 1 plate 11, and the other end of the driving shaft 12 passes through the interior of the adjustment box 3. A cable 13 is wound around the outer wall of the driving shaft 12. Two brake discs 14 are installed on the outer wall of the driving shaft 12, and the two brake discs 14 are respectively close to the No. 1 plate 11 and the outer wall of the adjustment box 3. A driving gear 15 is installed on the end surface of the driving shaft 12 close to the adjustment box 3. A driving box 2 is installed on the top of the bottom plate 1. The driving gear 15 is installed on the end surface of the driving shaft 12 close to the adjustment box 3. A driving motor 21 is installed on the inner wall of one side of the driving box 2, and a reducer 22 is installed on the inner wall of the other side of the driving box 2, and the driving motor 21 is connected to the reducer 22 in transmission. A servo motor 23 is fixedly installed on the inner wall of one side of the driving box 2, and the servo motor 23 is located below the driving motor 21. A transmission shaft 25 is installed on the output end of the servo motor 23, and one end of the transmission shaft 25 extends into the interior of the adjustment box 3, and one end of the transmission shaft 25 is fixedly connected to the outer wall of the No. 1 gear 7. A No. 5 gear 24 is installed on the output end of the reducer 22, and the No. 5 gear 24 is meshed with the driving gear 15.

[0049] Specifically, the No. 1 plate 11 and the adjustment box 3 can support the driving shaft 12, the driving motor 21 drives the No. 5 gear 24 to rotate through the reducer 22, the No. 5 gear 24 rotates to drive the driving gear 15 and the driving shaft 12 to rotate, thereby realizing the retraction and extension of the cable 13, the servo motor 23 drives the No. 1 gear 7 to rotate through the transmission shaft 25, and then drives the transmission belt 74 to rotate, the driving motor 21 drives the No. 5 gear 24 to rotate through the reducer 22, the No. 5 gear 24 drives the driving gear 15 to rotate, and the No. 5 gear 24 drives the driving shaft 12 to rotate, thereby realizing the retraction and extension function of the cable 13.

[0050] See also Figure 2 and Figure 8A cleaning box 4 is installed above the adjustment box 3, a through hole 41 is opened at the bottom of the cleaning box 4, and the brake disc 14 passes through the through hole 41 to enter the interior of the cleaning box 4, baffles 42 are fixedly installed on both sides of the through hole 41, hydraulic rods 53 are installed on the inner walls of both sides of the cleaning box 4, and an inclined cleaning plate 5 is fixedly installed on one end of the hydraulic rod 53, a triangular scraping plate 51 is installed on the side above the cleaning plate 5 close to the through hole 41, and a wiping cloth 52 is installed at the bottom of the cleaning plate 5.

[0051] Specifically, when the brake disc 14 rotates, the hydraulic rod 53 extends and drives the two cleaning plates 5 to approach the brake disc 14, and then the scraper plate 51 and the wiping cloth 52 contact the outer wall of the brake disc 14. When the brake disc 14 rotates, the scraper plate 51 scrapes off the oil or adhering debris on the surface of the brake disc 14 to prevent the braking effect from deteriorating. The scraped debris flows along the triangular scraper plate 51 to one side of the baffle 42. The two baffles 42 form two debris collection chambers on both sides of the brake disc 14 to collect the scraped debris on the brake disc 14 for subsequent processing. While scraping off the debris, the wiping cloth 52 wipes the scraped part to ensure that the brake disc 14 is clean and tidy. Cleaning the brake disc 14 in the above manner can effectively prevent the scraped debris from falling onto the brake disc 14 below again, and can also prevent the debris from contaminating other components.

[0052] See also Figure 5 and Figure 6 Two driven shafts 6 are installed inside the adjustment box 3, and the two driven shafts 6 are located on both sides of the driving shaft 12. A sixth gear 63 is installed on the outer wall of the driven shaft 6, and a seventh gear 67 is installed on the outer wall of the driving shaft 12, and the seventh gear 67 is meshed with the sixth gear 63. An emergency wheel 62 is fixedly installed on the outer wall of the driven shaft 6, and a plurality of grooves 64 are installed on the outer wall of the emergency wheel 62. A spring 65 is installed on the inner bottom wall of the groove 64, and a latch tooth 66 is installed on one end of the spring 65.

[0053] Specifically, when the winch stalls, the speed of the driving shaft 12 increases, driving the two No. 6 gears 63 to increase their speed, and at the same time, the speed of the emergency wheel 62 increases. Due to the centrifugal effect, the latching tooth 66 pulls the spring 65 to extend, and at this time, the latching tooth 66 extends out of the groove 64, and the latching tooth 66 contacts the No. 2 gear 71 and the No. 3 gear 72 and drives the No. 2 gear 71 and the No. 3 gear 72 to rotate. From the above-mentioned sequential braking process, it can be seen that when the device brakes sequentially, it can always ensure that the No. 9 gear 76 is in contact with one of the No. 2 gear 71, the No. 3 gear 72 and the No. 4 gear 73. Therefore, when the driving wheel stalls, one of the No. 2 gear 71 and the No. 3 gear 72 will drive the No. 9 gear 76 to rotate, so that one of the brake pads brakes, thereby preventing the situation where the brake cannot be braked, thereby improving the safety of the device;

[0054] In addition, air-cooling blades can be installed on the driven shaft 6, and an opening can be made on the side of the adjustment box 3 close to the brake disc 14. When braking for a long time, the driven shaft 6 continues to rotate, which can drive the blades to cool the brake disc 14 with air.

[0055] The working principle is as follows: first, the winch is used normally to retract and release the cable 13 through the driving motor 21. When braking for a short time, the servo motor 23 rotates forward to brake, and then the limit gear 84 is separated from the eighth gear 75. The servo motor 23 reverses and releases the brake. When braking for a long time, the limit gear 84 is first contacted with the eighth gear 75, and then the servo motor 23 continues to rotate forward. Braking is performed by intermittent braking to reduce the wear of a single brake pad.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automatic brake control system for electric winches for marine vessels, characterized in that: It includes an adjustment box (3) and a transmission belt (74); An adjustment box (3), wherein the inner rear wall of the adjustment box (3) is connected to three rotating rods (70) via bearings, the outer walls of the three rotating rods (70) are respectively mounted with a second gear (71), a third gear (72) and a fourth gear (73), and the outer walls of the three rotating rods (70) are all surrounded by a rope (77), one end of the rope (77) is fixedly connected to the outer wall of the rotating rod (70); A transmission belt (74), the transmission belt (74) is mounted around the outer walls of the second gear (71), the third gear (72) and the fourth gear (73), the inner and outer walls of the transmission belt (74) are respectively mounted with an eighth gear (75) and a ninth gear (76), the eighth gear (75) has a plurality of gears evenly distributed around the outer side surface of the transmission belt (74), and the ninth gear (76) has a plurality of gears distributed in a straight line on the inner side surface of the transmission belt (74); The transmission belt (74) is controlled to rotate, driving the ninth gear (76) to intermittently mesh with the second gear (71), the third gear (72) and the fourth gear (73) in sequence. The first gear (7) is installed on the rear wall inside the adjustment box (3). The first gear (7) is located on the outside of the transmission belt (74), and the first gear (7) is meshed with the eighth gear (75). The bottom of the adjustment box (3) is fixedly connected to a bottom plate (1), and the top of the bottom plate (1) is fixedly connected to a first plate (11). The first plate (11) is installed opposite to the adjustment box (3). A driving shaft (12) is installed through the outer wall of the first plate (11). The other end of the driving shaft (12) penetrates the interior of the adjustment box (3). A cable (13) is wound around the outer wall of the driving shaft (12); two brake discs (14) are installed on the outer wall of the driving shaft (12), and the two brake discs (14) are respectively close to the outer wall of the No. 1 plate (11) and the adjustment box (3); a driving gear (15) is installed on the end surface of the driving shaft (12) close to the adjustment box (3); three fixing blocks (9) are installed on the inner wall of the adjustment box (3), and the three fixing blocks (9) are all located on the outside of the transmission belt (74); a driving box (2) is installed on the top of the bottom plate (1); a driving motor (21) is installed on the inner wall of one side of the driving box (2); a reducer (22) is installed on the inner wall of the other side of the driving box (2), and the driving motor (21) and the reducer ( 22) transmission connection, a servo motor (23) is fixedly installed on the inner wall of one side of the drive box (2), the servo motor (23) is located below the drive motor (21), a transmission shaft (25) is installed on the output end of the servo motor (23), and one end of the transmission shaft (25) extends into the interior of the adjustment box (3), one end of the transmission shaft (25) is fixedly connected to the outer wall of the first gear (7), a fifth gear (24) is installed on the output end of the reducer (22), and the fifth gear (24) is meshed with the drive gear (15), and a plurality of fixed rods (31) are fixedly installed on the outer wall of the adjustment box (3), and a first brake pad (32) and a second brake pad (35) are slidably connected to the outer wall of the fixed rod (31) The first brake pad (32) and the second brake pad (35) are symmetrically installed with the brake disc (14) as the center. Three rotating shafts (33) are installed on the outer wall of the adjustment box (3). One end of the three rotating shafts (33) is fixedly connected to one end of three rotating rods (70) respectively. The rotating shaft (33) is provided with positive and negative thread grooves (34) at both ends with the brake disc (14) as the center. Two thread seats are nested and installed on the outer wall of the positive and negative thread grooves (34). The two thread seats are fixedly connected to the first brake pad (32) and the second brake pad (35) respectively. The first brake pad (32) and the second brake pad (35) are moved closer to each other by rotating the positive and negative thread grooves (34) to brake the brake disc (14).

2. The automatic brake control system for electric winches for marine vessels according to claim 1, characterized in that: A cleaning box (4) is installed above the adjustment box (3), a through hole (41) is provided at the bottom of the cleaning box (4), and the brake disc (14) passes through the through hole (41) to enter the interior of the cleaning box (4), and baffles (42) are fixedly installed on both sides of the through hole (41).

3. The automatic brake control system for electric winches for marine vessels according to claim 2, characterized in that: Hydraulic rods (53) are installed on the inner walls of both sides of the cleaning box (4); an inclined cleaning plate (5) is fixedly installed on one end of the hydraulic rod (53); a triangular scraping plate (51) is installed on one side of the cleaning plate (5) close to the through hole (41); and a wiping cloth (52) is installed at the bottom of the cleaning plate (5).

4. The automatic brake control system for electric winches for marine vessels according to claim 1, characterized in that: Two driven shafts (6) are installed on the inner wall of the adjustment box (3), and the two driven shafts (6) are located on both sides of the driving shaft (12). A sixth gear (63) is installed on the outer wall of the driven shaft (6), and a seventh gear (67) is installed on the outer wall of the driving shaft (12), and the seventh gear (67) meshes with the sixth gear (63). An emergency wheel (62) is fixedly installed on the outer wall of the driven shaft (6), and a plurality of grooves (64) are formed on the outer wall of the emergency wheel (62). A spring (65) is installed on the inner bottom wall of the groove (64), and a latching tooth (66) capable of meshing with the second gear (71) and the third gear (72) is installed on one end of the spring (65).

5. The automatic brake control system for electric winches for marine vessels according to claim 1, characterized in that: A plurality of slide rails (8) are installed on the inner wall of the adjustment box (3), a telescopic cylinder (81) is installed on the outer side of the slide rail (8), a sliding shaft (83) is placed inside the slide rail (8), a limit gear (84) is installed on the outer wall of the sliding shaft (83), a limit ring (82) is sleeved on the outer wall of the sliding shaft (83), and the limit ring (82) is located on the outer side of the slide rail (8), the sliding shaft (83) and the limit ring (82) form a ratchet mechanism, and the telescopic end of the telescopic cylinder (81) is fixedly connected to the outer wall of the limit ring (82).

6. The automatic brake control system for electric winches for marine vessels according to claim 1, characterized in that: The outer wall of the fixed block (9) is provided with a guide wheel (91), the outer wall of the fixed block (9) is provided with a long slide groove (92), one end of the long slide groove (92) is provided with a circular groove (93), the inner wall of the long slide groove (92) is slidably provided with an L-shaped sliding column (94), the sliding column (94) is connected to the rotating rod (70) and the guide wheel (91) by a rope (77), and the outer wall of the transmission belt (74) is fixedly connected with a pushing block (95).

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