CN117864306B - Anti-anchor speed limiting device - Google Patents

Abstract

The present invention belongs to the field of ship anchoring equipment, and relates to an anti-anchoring speed limiting device, which is used to limit the rotation speed of the anchor chain wheel. A transmission shaft detachably connected to the anchor chain wheel is arranged in the device body, and a transmission gear is fixed on the transmission shaft. The speed limiting chain is arranged in the device body in a manner of meshing with the transmission gear, and at least one end of the speed limiting chain is connected to a slider damping mechanism; an A-type support frame is fixedly connected to the device body, and includes a first support arm and a second support arm respectively arranged on both sides of the device body, and a slider damping mechanism is arranged in the first support arm and/or the second support arm. This device converts the rotational motion of the anchor chain wheel into the reciprocating motion of the piston, and transmits the damping force applied to the piston to the anchor chain wheel to hinder the rotation of the anchor chain wheel, thereby achieving the effect of limiting the rotation speed of the anchor chain wheel, and can effectively prevent the occurrence of anchoring accidents.

Description

Anti-anchor speed limiting device

Technical Field

The invention belongs to the field of ship anchoring equipment and relates to an anchor-breaking prevention speed limiting device.

Background technique

When a ship is berthing, it will drop anchor. Usually, the anchor chain is lowered to the seabed using an anchor chain pulley device. The anchor's grip on the seabed limits the forward and backward movement of the ship, reducing the degree of turbulence in the wind and waves. The main structure of the anchor chain pulley device is a rotatable winding drum, on which the anchor chain is wound. The rotation of the winding drum is used to raise and lower the anchor.

Since the anchor and anchor chain have a large dead weight, during the lowering process, the speed of the anchor chain will become faster and faster, causing the reel of the anchor chain wheel to rotate too fast. Stalling often occurs, and in severe cases, it may cause damage to the anchor chain wheel, eventually causing a serious safety accident.

Summary of the invention

In view of this, the object of the present invention is to provide an anti-anchoring speed limiting device to prevent the anchoring accident caused by the excessive rotation speed of the anchor chain wheel during the anchoring process, thereby improving the safety of anchoring.

To achieve the above object, the present invention provides an anti-anchoring speed limiting device for limiting the rotation speed of the anchor chain wheel, especially limiting the rotation speed of the winding drum, so as to avoid excessive lowering speed of the anchor chain when dropping anchor.

Optionally, the speed limiting device comprises a device body, in which a transmission shaft detachably connected to the anchor chain wheel is arranged, and the transmission shaft is preferably detachably connected to the winding drum of the anchor chain wheel.

Optionally, a transmission gear is fixed on the transmission shaft, and the speed limiting chain is arranged in the speed limiting device in a manner of meshing with the transmission gear. At least one end of the speed limiting chain is connected to a slider damping mechanism, and preferably both ends of the speed limiting chain are connected to a slider damping mechanism.

Optionally, the speed limiting device also includes an A-type support frame fixedly connected to the device body, the A-type support frame includes a first support arm and a second support arm respectively arranged on both sides of the device body, the first support arm and the second support arm are closed at one end away from the device body, and the other end is connected to the interior of the device body.

Optionally, at least one end of the speed limiting chain extends to the first support arm and/or the second support arm, and the slider damping mechanism is disposed in the first support arm and/or the second support arm. Preferably, both ends of the speed limiting chain extend to the first support arm and the second support arm, respectively, and the slider damping mechanism is disposed in the first support arm and the second support arm.

Optionally, the meshing section where the speed limiting chain meshes with the transmission gear includes a plurality of rollers and a rigid short rod connecting adjacent rollers. The number of rollers is preferably 8 to 10, and more preferably 8.

Optionally, a sealing plate is provided in the first support arm and/or the second support arm, and the sealing plate separates the first support arm and/or the second support arm into a filling section and a hollow section, and the filling section of the first support arm and/or the second support arm is filled with damping fluid.

Optionally, sealing plates are provided in both the first support arm and the second support arm, and the sealing plates separate the first support arm and the second support arm into a filling section and a hollow space, and the filling sections of the first support arm and the second support arm are filled with damping fluid.

Optionally, the first piston is slidably disposed in the filling section of the first support arm, and the second piston is slidably disposed in the filling section of the second support arm.

Optionally, the speed limiting chain extends from the first end close to the first support arm into the first filling section and is connected to the first piston.

Optionally, the speed limiting chain extends from the second end close to the second support arm into the second filling section and is connected to the second piston.

Optionally, a roller among the rollers that is closest to the first support arm is connected to the first piston via a first rigid long rod, the first rigid long rod is rotationally connected to the first piston, and the first rigid long rod pivots around the connection between it and the first piston.

Optionally, a roller among the rollers that is closest to the second support arm is connected to the second piston via a second rigid long rod, the second rigid long rod is rotationally connected to the second piston, and the first rigid long rod pivots around its connection with the first piston.

Optionally, a transverse support arm connecting the first support arm and the second support arm is provided between the first support arm and the second support arm.

The beneficial effects of the present invention are:

The speed limiting device provided by the present invention adopts a simple structure to obtain a significant speed limiting effect. Through the cooperation of the gear chain mechanism and the slider connecting rod mechanism, the rotational motion of the anchor chain wheel is converted into the reciprocating motion of the piston, and the damping force applied to the piston is transmitted to the anchor chain wheel to hinder the rotation of the anchor chain wheel, thereby achieving the effect of limiting the rotation speed of the anchor chain wheel, thereby effectively preventing the occurrence of unmooring accidents. In addition, the present invention also has the advantage of simple operation. When unmooring, it is only necessary to connect the transmission shaft to the winding drum of the existing anchor chain wheel to achieve coordinated speed limiting, and when raising the anchor, it is only necessary to retract the transmission shaft. There is no need to modify the existing anchor chain wheel device, and the speed limiting effect can be achieved through simple operation.

Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG1 is a schematic diagram of an assembly of an anti-anchoring speed limiting device and an anchor chain wheel provided by the present invention;

FIG2 is a schematic structural diagram of an anti-anchoring speed limiting device provided by the present invention;

FIG3 is a schematic structural diagram of a speed limiting chain of an anti-anchoring speed limiting device provided by the present invention.

Reference numerals:

100-speed limiting device; 110-transmission shaft; 120-transmission gear; 200-speed limiting chain; 210-roller; 220-rigid short rod; 230-first rigid long rod; 240-second rigid long rod; 300-A-type support frame; 310-first support arm; 311-first piston; 320-second support arm; 321-second piston; 330-filling section; 340-hollow section; 350-sealing plate; 360-lateral support arm; 400-anchor chain wheel; 410-reeling drum; 420-anchor chain.

Detailed ways

The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and the features in the embodiments can be combined with each other without conflict.

Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

1, 2 and 3, the present invention provides an anti-anchoring speed limiting device for limiting the rotation speed of the anchor chain wheel 400, thereby limiting the lowering speed of the anchor chain 420. The anchor chain wheel 400 includes a winding drum 410 for winding the anchor chain 420, and the winding drum 410 is rotated to realize anchoring and anchoring.

The speed limiting device is composed of a device body 100 and an A-type support frame 300. The device body 100 is a closed box with an accommodating space inside. The A-type support frame 300 includes a first support arm 310, a second support arm 320, and a transverse support arm 360 connected therebetween. The device body 100 is arranged at the top of the A-type support frame 300, and the first support arm 310 and the second support arm 320 are arranged on both sides of the device body 100. One end of the first support arm 310 and the second support arm 320 away from the device body 100 is closed, and the other end is fixedly connected to the device body 100 and communicated with the inside of the device body 100.

Further, a transmission shaft 110 and a transmission gear 120 fixed on the transmission shaft 110 are provided in the speed limiting device 100, and the transmission gear 120 is sleeved on the transmission shaft 110 to rotate synchronously therewith. The speed limiting chain 200 is provided in the speed limiting device 100 in a manner of meshing with the transmission gear 120, and at least one end of the speed limiting chain 200 is connected to a slider damping mechanism, and the slider damping mechanism is provided in the first support arm 310 and/or the second support arm 320. A sealing plate 350 is provided in the first support arm 310 and/or the second support arm 320, and the sealing plate 350 separates the first support arm 310 and/or the second support arm 320 into a filling section 330 and a hollow section 340. The filling section 330 of the first support arm 310 and/or the second support arm 320 is filled with damping fluid, and the slider damping mechanism is arranged in the filling section 330 of the first support arm 310 and/or the second support arm 320 to transmit the damping force to the rotating shaft 410 of the anchor chain wheel 400 through the speed limiting chain 200, the transmission gear 120, and the transmission shaft 110, so as to achieve the effect of limiting the rotation speed of the rotating shaft 410.

In order to provide a better speed limiting effect, it is preferred that both ends of the speed limiting chain 200 are connected to the slider damping mechanism, and both ends of the speed limiting chain 200 extend to the first support arm 310 and the second support arm 320 respectively. For the convenience of description, the end of the speed limiting chain 200 extending to the first support arm 310 is defined as the first end, the end of the speed limiting chain 200 extending to the second support arm 320 is defined as the second end, and the part of the speed limiting chain 200 that meshes with the transmission gear 120 is defined as the meshing section.

The meshing section of the speed limiting chain 200 includes a plurality of rollers 210 connected by a rigid short rod 220, each roller 210 is engaged with the tooth groove of the transmission gear 120, and the number of rollers 210 is preferably 8 to 10, and more preferably 8. The first end of the speed limiting chain 200 extends to the inside of the first support arm 310, and the second end extends to the inside of the second support arm 320. The first support arm 310 and the second support arm 320 are both two-section structures separated by a sealing plate 350. The first support arm 310 and the second support arm 320 are separated from the device body 100 by a filling section 330, and the filling section 330 is filled with damping fluid. The first support arm 310 and the second support arm 320 are close to the device body 100. The hollow section 340 is not filled and is connected to the device body 100.

The first end of the speed limiting chain 200 passes through the sealing plate 350 in the first support arm 310 and enters the filling section 330. The first end is connected to the first piston 311, and the first piston 311 can slide in the filling section 330 of the first support arm 310. The roller 210 closest to the first support arm 310 among the multiple rollers 210 of the meshing section is connected to the first piston 311 through the first rigid long rod 230. Since the first rigid long rod 230 moves circumferentially along the transmission gear 120, and the first piston 311 moves axially along the first support frame, in order to avoid the first rigid long rod 230 and the first piston 311 from colliding violently with other components during the transmission process, the rigid long rod is preferably hinged to the first piston 311 to provide rotational freedom at the connection, thereby improving the anti-seismic and anti-deformation capabilities of the device.

The second end of the speed limiting chain 200 passes through the sealing plate 350 in the second support arm 320 and enters the filling section 330. The second end is provided with a second piston 321, and the second piston 321 can slide in the filling section 330 of the second support arm 320. Among the multiple rollers 210 of the meshing section, the roller 210 closest to the second support arm 320 is connected to the second piston 321 through a second rigid long rod 240, and the second rigid long rod 240 is preferably hinged to the second piston 321.

The first filling section 311 and the second filling section 321 are both filled with damping fluid, and the damping force exerted on the first piston 311 and the second piston 321 when they reciprocate therein is , where C is the damping coefficient of the damping fluid, V is the movement speed of the piston, and α is the speed index, which is between 0.01 and 1 according to engineering requirements. When the anti-anchoring speed limiting device provided by the present invention is used, liquids with different damping coefficients can be selected according to the damping force actually required.

When the ship drops anchor, the transmission shaft 110 of the device body 100 is connected to the rotating shaft 410 of the existing anchor chain wheel 400, so that the transmission shaft 110 and the transmission gear 120 thereon rotate synchronously with the anchor chain wheel 400 clockwise or counterclockwise, and the multiple rollers 210 of the speed limiting chain 200 rotate so that the speed limiting chain 200 as a whole moves clockwise or counterclockwise along the circumference of the transmission gear 120. In this process, the first end of the speed limiting chain 200 moves upward, and the first piston 311 moves axially upward in the first support arm 310; the second end of the speed limiting chain 200 moves downward, and the second piston 321 moves axially downward in the second support arm 320. The damping force exerted on the first piston 311 and the second piston 321 can hinder the rotation of the rotating shaft 410 of the anchor chain wheel 400, thereby limiting the lowering speed of the anchor chain 420. When the ship weighs anchor, the transmission shaft 110 of the device body 100 can be withdrawn from the anchor chain wheel 400.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims (6)

1. An anti-anchoring speed limiting device, used to limit the rotation speed of an anchor chain wheel (400), characterized in that: The device comprises a device body (100), wherein a transmission shaft (110) for detachably connecting to the anchor chain wheel (400) is arranged in the device body (100), a transmission gear (120) is fixedly arranged on the transmission shaft (110), and a speed limiting chain (200) is arranged in the device body (100) in a manner of meshing with the transmission gear (120); wherein the meshing section of the speed limiting chain (200) comprises a plurality of rollers (210) meshing with the transmission gear (120), and a rigid short rod (220) connecting adjacent rollers (210); The device also comprises an A-type support frame (300) fixedly connected to the device body (100), the A-type support frame (300) comprising a first support arm (310) and a second support arm (320) respectively arranged on both sides of the device body (100); two ends of the speed limiting chain (200) respectively extend into the first support arm (310) and the second support arm (320); wherein a slider damping mechanism is arranged in the first support arm (310) and/or the second support arm (320), and at least one end of the speed limiting chain (200) is connected to the slider damping mechanism; A sealing plate (350) is provided in the first support arm (310) and/or the second support arm (320), and the sealing plate (350) separates the first support arm (310) and/or the second support arm (320) into a filling section (330) and a hollow section (340); The slider damping mechanism comprises a damping fluid filled in a filling section (330) of the first support arm (310) and/or the second support arm (320), and a first piston (311) and/or a second piston (321) slidably arranged in the filling section (330) of the first support arm (310) and/or the second support arm (320); at least one end of the speed limiting chain (200) is connected to the first piston (311) and/or the second piston (321). 2. The device according to claim 1, characterized in that: the first end of the speed limiting chain (200) close to the first support arm (310) extends into the filling section (330) of the first support arm (310) and is connected to the first piston (311). 3. The device according to claim 1, characterized in that: the second end of the speed limiting chain (200) close to the second support arm (320) extends into the filling section (330) of the second support arm (320) and is connected to the second piston (321). 4. The device according to claim 2, characterized in that: a roller (210) among the rollers (210) which is closest to the first support arm (310) is connected to the first piston (311) through a first rigid long rod (230), the first rigid long rod (230) is rotationally connected to the first piston (311), and the first rigid long rod (230) pivots around the connection between it and the first piston (311). 5. The device according to claim 3, characterized in that: a roller (210) among the rollers (210) which is closest to the second support arm (320) is connected to the second piston (321) via a second rigid long rod (240), the second rigid long rod (240) is rotationally connected to the second piston (321), and the second rigid long rod (240) pivots around the connection between it and the second piston (321). 6. The device according to claim 1, characterized in that a transverse support arm (360) is provided between the first support arm (310) and the second support arm (320) to connect the two.