An electric anchor winch torque limiter

Abstract

The utility model provides a kind of electric anchor windlass torque limiting device, it is related to electric anchor windlass field.The utility model includes anchor windlass base, motor is installed in the anchor windlass base top by external bolt;Fixed to the motor power output end's speed reducer;Fixed to the speed reducer power output end's main shaft assembly;Locking assembly is set to the main shaft assembly outside, and limiting assembly is set to the locking assembly outside;The main shaft assembly includes: fixed to the speed reducer power output end's cable main shaft;Multiple equidistance evenly distributed limiting grooves are opened in the surface of the cable main shaft, and the surface of the cable main shaft is embedded with multiple equidistance evenly distributed strain gauges.The utility model is locked by the locking assembly, piston rod can drive tail magnet to insert into limiting groove, and cable main shaft is mechanically locked, and stability is higher, after motor failure, cable main shaft can be quickly locked, and cable main shaft is fixed.

Description

Technical Field

[0001] This utility model relates to the field of electric anchor winches, specifically an electric anchor winch torque limiting device. Background Technology

[0002] The torque limiting device of the anchor winch is a core component to ensure the safe operation of the equipment. By monitoring and limiting the torque output of the transmission system in real time, it prevents accidents such as shaft breakage, gear damage or motor burnout caused by overload.

[0003] Strain gauges or magnetoelastic sensors are typically used to collect torque data of the drive shaft or key components in real time. Spring pressure is used to control the friction between the friction plates. When overloaded, the friction plates slide relative to each other, cutting off power transmission.

[0004] For example, patent CN205472392U discloses an electric anchor winch torque limiting device, including a motor, a force transmission rod, a planetary reducer, a reduction gearbox, an amplifier board, and an electrical control device. The input shaft of the planetary reducer is connected to the motor, and the output shaft is connected to the reduction gearbox. The planetary reducer has a housing, the force transmission rod is fixed on the housing, and a torque sensor is provided at the end of the force transmission rod. The torque sensor is electrically connected to the amplifier board, and the amplifier board, the motor, and the electrical control device are electrically connected. This technical solution achieves the technical effects of "safety torque limiting of the anchor winch and self-tensioning function of the cable, with advantages such as reasonable structure, convenient installation, and simple debugging, which can greatly improve the safety and reliability of the equipment".

[0005] Most current electric anchor winches use torque limiting devices that directly force the operation to stop via power failure protection, or employ coupling or clutch designs to disengage the motor from the load in case of overload. To avoid burning out, the spindle directly bears the tension of the anchor chain or cable. If the spindle cannot be quickly and mechanically locked, it is prone to damage. Utility Model Content

[0006] The purpose of this utility model is to provide an electric anchor winch torque limiting device to solve the problems mentioned in the background art and overcome its technical defects.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an electric anchor winch torque limiting device, including an anchor winch base, a motor installed on the top of the anchor winch base by external bolts; a reducer fixed to the power output end of the motor; a main shaft assembly fixed to the power output end of the reducer; a locking component disposed outside the main shaft assembly; and a limiting component disposed outside the locking component. The main shaft assembly includes: a cable main shaft fixed to the power output end of the reducer; a plurality of equidistant and uniformly distributed limiting grooves formed on the surface of the cable main shaft; and a plurality of equidistant and uniformly distributed strain gauges embedded on the surface of the cable main shaft. The limiting assembly includes: a rotating ring rotatably mounted outside the cable main shaft; a lever fixed to the surface of the rotating ring; an arc-shaped frame disposed outside the lever; and a limiting screw penetrating inside the arc-shaped frame; The locking assembly includes: a hydraulic cylinder fixed to the side of the rotating ring facing the cable main shaft; a piston rod slidably connected to one end of the hydraulic cylinder; a fixed magnet sleeved on the outside of the piston rod; and a tail magnet disposed on one side of the fixed magnet.

[0008] As a further embodiment of this utility model: the main shaft assembly further includes: a support plate disposed on the top of the anchor winch base; and a support back plate disposed on one side of the support plate; the cable main shaft passes through the interior of the support plate.

[0009] As a further embodiment of this utility model: the surface of the support back plate is provided with a limiting threaded hole adapted to the limiting screw, and the limiting threaded hole is threadedly connected to the limiting screw.

[0010] As a further embodiment of this utility model, the locking assembly further includes a rubber damping block pasted on one side of the tail magnet, the limiting groove has a triangular cross-section, and the rubber damping block is located at the deeper end of the tail magnet near the limiting groove.

[0011] As a further improvement of this utility model, the locking assembly further includes: a first connecting pipe fixed to one end of the hydraulic cylinder; and a second connecting pipe disposed below the first connecting pipe.

[0012] As a further embodiment of this utility model, the locking assembly further includes: an oil supply pipe fixed to the end of the first connecting pipe; an oil return pipe fixed to the end of the second connecting pipe; a conveying pipe fixed to the ends of the oil return pipe and the oil supply pipe; and an oil tank body fixed to the end of the conveying pipe.

[0013] As a further embodiment of this utility model: the main body of the oil tank is fixed to the side of the support back plate, an oil pump is installed on the top of the main body of the oil tank, and the main body of the oil tank is connected to the hydraulic cylinder through the oil pump, the delivery pipe, the return pipe, and the second connecting pipe. The main body of the oil tank is connected to the hydraulic cylinder through the oil pump, the delivery pipe, the oil supply pipe, and the first connecting pipe.

[0014] As a further embodiment of this utility model: the hydraulic cylinder is adapted to the position of the limiting groove, the same magnetic poles of the fixed magnet and the tail magnet are arranged opposite each other, a buffer spring is provided between the fixed magnet and the tail magnet, and the buffer spring is sleeved on the outside of the piston rod.

[0015] As a further embodiment of this utility model: one end of the rotating ring is rotatably embedded inside the support back plate, and an annular limiting groove is provided at the connection between the support back plate and the rotating ring.

[0016] Compared with the prior art, the beneficial effects of this utility model include: 1. Through the locking component, the piston rod can drive the tail magnet to insert into the limit groove, mechanically locking the cable main shaft. It has high stability and can quickly lock the cable main shaft after the motor fails, thus fixing the cable main shaft. 2. By setting a fixed magnet and a tail magnet at the tail of the piston rod, and setting a buffer spring between the fixed magnet and the tail magnet, a certain buffering effect is achieved; 3. Through the set limit components, the lever can drive the rotating ring to rotate, the rotating ring drives the hydraulic cylinder to adjust the angle, and the piston rod of the hydraulic cylinder can rotate into the limit groove, insert the limit screw into the arc frame, and connect it with the limit threaded hole on the support back plate to realize manual limit. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 schematically shows an overall structural diagram according to one embodiment of the present invention; Figure 2 schematically shows a half-section structure according to one embodiment of the present invention; Figure 3 schematically shows a structural diagram of a rotating ring according to one embodiment of the present invention; Figure 4 schematically shows a structural diagram of a locking component according to one embodiment of the present invention; Figure 5 schematically shows an arc-shaped frame according to one embodiment of the present invention. A schematic diagram of the structure; Figure 6 schematically shows a structural diagram of a cable spindle according to one embodiment of the present invention; Figure 7 schematically shows a cross-sectional view of a cable spindle according to one embodiment of the present invention; Figure 8 schematically shows a structural diagram of a piston rod according to one embodiment of the present invention.

[0018] The following are the labeling elements in the diagram: 1. Anchor winch base; 2. Motor; 3. Reducer; 4. Main shaft assembly; 401. Cable main shaft; 402. Support plate; 403. Support back plate; 404. Limiting groove; 5. Locking assembly; 501. Oil tank body; 502. Delivery pipe; 503. Oil supply pipe; 504. Return pipe; 505. Hydraulic cylinder; 506. Rubber damping block; 507. Buffer spring; 508. Tail magnet; 509. First connecting pipe; 510. Second connecting pipe; 511. Piston rod; 512. Fixed magnet; 6. Limiting assembly; 601. Rotating ring; 602. Lever; 603. Limiting screw; 604. Arc frame; 605. Limiting threaded hole; 7. Strain gauge. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0021] Example 1: Please refer to Figure 1- Figure 8 This is the first embodiment of the present invention. This embodiment provides an electric anchor winch torque limiting device, including an anchor winch base 1, a motor 2 installed on the top of the anchor winch base 1 by external bolts; a reducer 3 fixed to the power output end of the motor 2; a main shaft assembly 4 fixed to the power output end of the reducer 3; a locking assembly 5 disposed outside the main shaft assembly 4; and a limiting assembly 6 disposed outside the locking assembly 5. The main shaft assembly 4 includes: a cable main shaft 401 fixed to the power output end of the reducer 3; a plurality of equidistant and uniformly distributed limiting grooves 404 formed on the surface of the cable main shaft 401; and a plurality of equidistant and uniformly distributed strain gauges 7 embedded on the surface of the cable main shaft 401. The limiting component 6 includes: a rotating ring 601 rotatably mounted outside the cable spindle 401; A lever 602 fixed to the surface of the rotating ring 601; an arc-shaped frame 604 disposed on the outside of the lever 602; and a limiting screw 603 passing through the inside of the arc-shaped frame 604; The locking assembly 5 includes: a hydraulic cylinder 505 fixed to the rotating ring 601 on the side facing the cable main shaft 401; a piston rod 511 slidably connected to one end of the hydraulic cylinder 505; a fixed magnet 512 sleeved on the outside of the piston rod 511; and a tail magnet 508 disposed on one side of the fixed magnet 512.

[0022] It should be noted that multiple strain gauges 7 are attached to the cable main shaft 401. When the cable main shaft... When strain gauge 7 undergoes torsional deformation under torque, the resistance value of the strain gauge changes. This change is converted into a voltage signal via a Wheatstone bridge, amplified, and filtered to obtain the torque value. The data is then transmitted to the PLC controller. The PLC controller is electrically connected to motor 2, thereby controlling motor 2. When strain gauge 7 detects a large torque, the PLC controller can stop motor 2 and activate hydraulic cylinder 505. After the oil pump operates, hydraulic oil enters hydraulic cylinder 505, pushing piston rod 511. The tail magnet 508 and rubber damping block 506 at the bottom of piston rod 511... The limiting groove 404 of the cable main shaft 401 is engaged to lock and limit the cable main shaft 401.

[0023] Furthermore, the main shaft assembly 4 also includes: a support plate 402 disposed on the top of the anchor winch base 1; and a support back plate 403 disposed on one side of the support plate 402; the cable main shaft 401 passes through the interior of the support plate 402.

[0024] It should be noted that the cable spindle 401 is rotatably connected to the support plate 402, the support plate 402 is fixedly connected to the support back plate 403, and the cable spindle 401 is connected to the power output end of the reducer 3. When the motor 2 is working, the power output end of the motor 2 transmits power to the reducer 3, and drives the cable spindle 401 to rotate through the power output end of the reducer 3. The cable spindle 401 winds up the cable.

[0025] Furthermore, the surface of the support back plate 403 is provided with a limiting threaded hole 605 that is adapted to the limiting screw 603, and the limiting threaded hole 605 is threadedly connected to the limiting screw 603.

[0026] It should be noted that the end of the limiting screw 603 is threaded and threaded to the limiting threaded hole 605. When the limiting screw 603 can be inserted into the through hole of the arc frame 604, the lever 602 is also provided with a through hole that matches the through hole of the arc frame 604 for the limiting screw 603 to pass through.

[0027] Furthermore, the locking component 5 also includes a rubber damping block 506 attached to one side of the tail magnet 508, the limiting groove 404 has a triangular cross-section, and the rubber damping block 506 is located at the deeper end of the tail magnet 508 near the limiting groove 404.

[0028] It should be noted that when the tail magnet 508 comes into contact with the deeper end of the limiting groove 404, it can squeeze the rubber damping block 506, causing the rubber damping block 506 to undergo elastic deformation, absorb energy, and achieve flexible locking.

[0029] In this embodiment, through the locking component 5, the piston rod 511 can drive the tail magnet 508 to insert into the limiting groove 404, mechanically locking the cable main shaft 401, thus improving stability. The cable main shaft 401 can be quickly locked and fixed after the motor 2 fails.

[0030] Example 2: Please refer to Figure 5- Figure 8 This is the first embodiment of the present invention, which provides an electric anchor winch torque limiting device.

[0031] Furthermore, the locking assembly 5 also includes: a first connecting pipe 509 fixed to one end of the hydraulic cylinder 505; and a second connecting pipe 510 disposed below the first connecting pipe 509.

[0032] It should be noted that the first connecting pipe 509 and the second connecting pipe 510 are respectively connected to the hydraulic cylinder 505 for hydraulic oil to pass through. After the hydraulic oil enters the hydraulic cylinder 505, it pushes the piston rod 511. The tail magnet 508 and the rubber damping block 506 at the bottom of the piston rod 511 are engaged in the limiting groove 404 of the cable main shaft 401. The cable main shaft 401 is locked a second time by the action of the piston rod 511.

[0033] Furthermore, the locking assembly 5 also includes: an oil supply pipe 503 fixed to the end of the first connecting pipe 509; an oil return pipe 504 fixed to the end of the second connecting pipe 510; a delivery pipe 502 fixed to the ends of the oil return pipe 504 and the oil supply pipe 503; and an oil tank body 501 fixed to the end of the delivery pipe 502.

[0034] It should be noted that the oil supply pipe 503 and the oil return pipe 504 are ring-shaped structures used to connect multiple hydraulic cylinders 505.

[0035] Furthermore, the main body of the oil tank 501 is fixed to the side of the support back plate 403. An oil pump is installed on the top of the main body of the oil tank 501, and the main body of the oil tank 501 is interconnected with the hydraulic cylinder 505 through the oil pump, the delivery pipe 502, the return pipe 504, and the second connecting pipe 510. The main body of the oil tank 501 is also connected to the hydraulic cylinder 505 through the oil pump, the delivery pipe 502, the oil supply pipe 503, and the first connecting pipe 509. Interconnected.

[0036] It should be noted that each hydraulic cylinder 505 is equipped with a first connecting pipe 509 and a second connecting pipe 510 for oil injection and return, thereby enabling the extension and retraction of the piston rod 511 on the hydraulic cylinder 505.

[0037] Furthermore, the hydraulic cylinder 505 is positioned to match the limiting groove 404, the same magnetic poles of the fixed magnet 512 and the tail magnet 508 are arranged opposite each other, a buffer spring 507 is provided between the fixed magnet 512 and the tail magnet 508, and the buffer spring 507 is sleeved on the outside of the piston rod 511.

[0038] It should be noted that the fixed magnet 512 is fixed at the end of the piston rod 511 near the hydraulic cylinder 505, while the tail magnet 508 is fixed at the end of the piston rod 511 away from the hydraulic cylinder 505. They are elastically connected by a buffer spring 507, and the fixed magnet 512 and the tail magnet 508 are like poles that repel each other.

[0039] Furthermore, one end of the rotating ring 601 is rotatably embedded inside the support back plate 403, and an annular limiting groove is provided at the connection between the support back plate 403 and the rotating ring 601.

[0040] It should be noted that the rotating ring 601 can rotate inside the hollow support back plate 403 to adjust the angle of the rotating ring 601.

[0041] In this embodiment, a certain buffering effect is achieved by setting a fixed magnet 512 and a tail magnet 508 at the tail of the piston rod 511, and setting a buffer spring 507 between the fixed magnet 512 and the tail magnet 508. Through the set limiting component 6, the lever 602 can drive the rotating ring 601 to rotate, and the rotating ring 601 drives the hydraulic cylinder 505 to adjust the angle. The piston rod 511 of the hydraulic cylinder 505 can rotate into the limiting groove 404, insert the limiting screw 603 into the arc frame 604, and thread it into the limiting threaded hole 605 on the support back plate 403 to realize manual limiting.

[0042] Example 3: Please refer to Figure 1- Figure 8 This is the third embodiment of the present invention, which provides a method for using an electric anchor winch torque limiting device, including the following steps: S1. Torque detection: The torque of the cable spindle 401 is monitored by strain gauge 7 and the data is transmitted to the PLC controller. The PLC controller controls motor 2, and motor 2 stops when the torque is too high. S2, Mechanical locking: After the hydraulic oil enters the hydraulic cylinder 505, it pushes the piston rod 511. The tail magnet 508 and the rubber damping block 506 at the bottom of the piston rod 511 are engaged in the limiting groove 404 of the cable main shaft 401. The cable main shaft 401 is locked a second time by the action of the piston rod 511. S3, Linkage Buffer: After the piston rod 511 extends, the tail magnet 508 and the fixed magnet... The spacing between 512 can be adjusted according to pressure changes. The buffer spring 507 elastically expands and contracts, and in conjunction with the hydraulic oil, absorbs the impact energy. At the same time, the rubber damping block 506 on one side of the tail magnet 508 is squeezed and undergoes elastic deformation to absorb energy and achieve flexible locking. S4. Manual Limit: Manually rotate lever 602, which in turn drives rotating ring 601 to rotate. When the rotating ring 601 moves, it drives the hydraulic cylinder 505 to rotate, and the piston rod 511 of the hydraulic cylinder 505 rotates into the limiting groove 404. The limiting screw 603 can be inserted into the arc-shaped frame 604 and threadedly connected to the limiting threaded hole 605 on the support back plate 403 to realize manual limiting.

[0043] Working principle: Multiple strain gauges 7 are attached to the cable main shaft 401. When the cable main shaft... When motor 401 undergoes torsional deformation under torque, the resistance value of the strain gauge changes. This change is converted into a voltage signal via a Wheatstone bridge, amplified, and filtered to obtain the torque value. This data is then transmitted to the PLC controller, which is electrically connected to motor 2 to control motor 2. When strain gauge 7 detects a large torque, the PLC controller can stop motor 2. Hydraulic oil enters hydraulic cylinder 505, pushing piston rod 511. The tail magnet 508 and rubber damping block 506 at the bottom of piston rod 511 engage with the limiting groove 404 of cable spindle 401. The cable spindle 401 is then locked a second time by the piston rod 511. After piston rod 511 extends, the distance between the tail magnet 508 and the fixed magnet 512 can be adjusted according to pressure changes. Buffer spring 507 elastically expands and contracts, working with hydraulic oil to absorb impact energy. Simultaneously, the rubber damping block 506 on one side of the tail magnet 508 undergoes elastic deformation under pressure, absorbing energy and achieving flexible locking. Lever 602 drives rotating ring 601, which in turn drives hydraulic cylinder 505 to rotate. The piston rod 511 of hydraulic cylinder 505... Rotate to the inside of the limiting groove 404, and the limiting screw 603 can be inserted into the arc-shaped frame 604 and threadedly connected to the limiting threaded hole 605 on the support back plate 403 to achieve manual limiting.

[0044] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A torque limiting device for an electric anchor winch, characterized in that, Includes an anchor winch base (1), a motor (2) mounted on the top of the anchor winch base (1) by external bolts; a reducer (3) fixed to the power output end of the motor (2); a main shaft assembly (4) fixed to the power output end of the reducer (3); a locking assembly (5) disposed outside the main shaft assembly (4); and a limiting assembly (6) disposed outside the locking assembly (5). The main shaft assembly (4) includes: a cable main shaft (401) fixed to the power output end of the reducer (3); a plurality of equidistant and uniformly distributed limiting grooves (404) opened on the surface of the cable main shaft (401); and a plurality of equidistant and uniformly distributed strain gauges (7) embedded on the surface of the cable main shaft (401). The limiting component (6) includes: a rotating ring (601) rotatably mounted on the outside of the cable main shaft (401); a lever (602) fixed to the surface of the rotating ring (601); an arc-shaped frame (604) disposed on the outside of the lever (602); and a limiting screw (603) penetrating inside the arc-shaped frame (604). The locking assembly (5) includes: a hydraulic cylinder (505) fixed to the side of the rotating ring (601) facing the cable main shaft (401); a piston rod (511) slidably connected to one end of the hydraulic cylinder (505); a fixed magnet (512) sleeved on the outside of the piston rod (511); and a tail magnet (508) disposed on one side of the fixed magnet (512).

2. The torque limiting device for an electric anchor winch according to claim 1, characterized in that, The main shaft assembly (4) further includes: a support plate (402) disposed on the top of the anchor winch base (1); and a support back plate (403) disposed on one side of the support plate (402); the cable main shaft (401) passes through the interior of the support plate (402).

3. The torque limiting device for an electric anchor winch according to claim 2, characterized in that, The surface of the support back plate (403) is provided with a limiting threaded hole (605) that is adapted to the limiting screw (603), and the limiting threaded hole (605) is threadedly connected to the limiting screw (603).

4. The torque limiting device for an electric anchor winch according to claim 3, characterized in that, The locking assembly (5) further includes a rubber damping block (506) attached to one side of the tail magnet (508), the limiting groove (404) has a triangular cross-section, and the rubber damping block (506) is located at the deeper end of the tail magnet (508) near the limiting groove (404).

5. The torque limiting device for an electric anchor winch according to claim 4, characterized in that, The locking assembly (5) further includes: a first connecting pipe (509) fixed to one end of the hydraulic cylinder (505); and a second connecting pipe (510) disposed below the first connecting pipe (509).

6. The torque limiting device for an electric anchor winch according to claim 5, characterized in that, The locking assembly (5) further includes: an oil supply pipe (503) fixed to the end of the first connecting pipe (509); an oil return pipe (504) fixed to the end of the second connecting pipe (510); a delivery pipe (502) fixed to the ends of the oil return pipe (504) and the oil supply pipe (503); and an oil tank body (501) fixed to the end of the delivery pipe (502).

7. The torque limiting device for an electric anchor winch according to claim 6, characterized in that, The main body of the oil tank (501) is fixed to the side of the support back plate (403). An oil pump is installed on the top of the main body of the oil tank (501). The main body of the oil tank (501) is connected to the hydraulic cylinder (505) through the oil pump, the delivery pipe (502), the return pipe (504), and the second connecting pipe (510). The main body of the oil tank (501) is connected to the hydraulic cylinder (505) through the oil pump, the delivery pipe (502), the oil supply pipe (503), and the first connecting pipe (509).

8. The torque limiting device for an electric anchor winch according to claim 7, characterized in that, The hydraulic cylinder (505) is positioned to match the limiting groove (404). The same magnetic poles of the fixed magnet (512) and the tail magnet (508) are arranged opposite each other. A buffer spring (507) is provided between the fixed magnet (512) and the tail magnet (508), and the buffer spring (507) is sleeved on the outside of the piston rod (511).

9. The torque limiting device for an electric anchor winch according to claim 8, characterized in that, One end of the rotating ring (601) is rotatably embedded inside the support back plate (403), and an annular limiting groove is provided at the connection between the support back plate (403) and the rotating ring (601).

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