CN111776138B

CN111776138B - Chain stopper

Info

Publication number: CN111776138B
Application number: CN202010472566.XA
Authority: CN
Inventors: 白宗; 张勇勇; 赵建虎; 郭艳茹
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-12-17
Anticipated expiration: 2040-05-29
Also published as: CN111776138A

Abstract

The disclosure provides a chain stopper, and belongs to the field of marine anchoring equipment. The chain stopper includes: a propeller shaft configured to be rotatably inserted into a bulkhead of a cabin, both ends of the propeller shaft being located inside and outside the cabin, respectively; a drive cylinder configured to be fixed within the cabin; the motion conversion mechanism is respectively connected with the transmission shaft and the driving oil cylinder and converts the linear motion of the driving oil cylinder into the rotary motion of the transmission shaft; an outboard bracket configured to be secured outboard of the boat; the roller is rotatably arranged on the extravehicular bracket and is configured to rotate along with the retraction of the anchor chain; and the brake knife block is rotatably arranged on the extravehicular bracket, is fixedly connected with the transmission shaft and is configured to stop the retraction of the anchor chain when rotating to a first set position. The present disclosure may control the raising and retracting of the blades under water.

Description

Chain stopper

Technical Field

The disclosure relates to the field of marine anchoring equipment, in particular to a chain stopper.

Background

The chain stopper is a device for clamping an anchor chain when a ship sails or is anchored. The chain stopper is usually matched with an anchor machine for use, is fixed between the anchor machine and an anchor chain barrel and is separated from an anchor chain wheel, and mainly blocks the anchor chain after anchoring or when the anchor is retracted to an anchor lip, so that the tensile force of the anchor and the anchor chain is borne during anchoring and mooring, and the tensile force is not transmitted to the anchor chain wheel.

In the related art, the chain stopper is arranged on a deck of a ship, which is not in contact with seawater, the turning up and the retraction of the knife switch are controlled in a manual mode, and the knife switch is used for clamping a vertical chain ring passing through the guide groove to stop the anchor chain.

The semi-submerged ship is a special ship design mode, when the semi-submerged ship works, like a submarine, a cargo loading deck is submerged under water by adjusting the ballast water amount of a ship body, when goods to be shipped are dragged above the cargo loading deck, the ballast water is discharged out of the ship body, the ship body and the goods on the cargo loading deck float out of the water, and the goods are bound and fixed on the cargo loading deck, so that the goods can be transported to a specified position. When the chain stopper is arranged on a loading deck of the semi-submersible ship, the chain stopper can be completely soaked in seawater as the loading deck when the semi-submersible ship works, and the turning-up and the withdrawing of the knife switch cannot be controlled manually.

Disclosure of Invention

The disclosed embodiment provides a chain stopper which can control the turning up and the retraction of a knife switch under water. The technical scheme is as follows:

the disclosed embodiment provides a chain stopper, chain stopper includes:

a propeller shaft configured to be rotatably inserted into a bulkhead of a cabin, both ends of the propeller shaft being located inside and outside the cabin, respectively;

a drive cylinder configured to be fixed within the cabin;

the motion conversion mechanism is respectively connected with the transmission shaft and the driving oil cylinder and converts the linear motion of the driving oil cylinder into the rotary motion of the transmission shaft;

an outboard bracket configured to be secured outboard of the boat;

the roller is rotatably arranged on the extravehicular bracket and is configured to rotate along with the retraction of the anchor chain;

and the brake knife block is rotatably arranged on the extravehicular bracket, is fixedly connected with the transmission shaft and is configured to stop the retraction of the anchor chain when rotating to a first set position.

Optionally, the motion conversion mechanism comprises a crank and a rocker, one end of the rocker is hinged to the driving oil cylinder, the other end of the rocker is hinged to an eccentric area of the crank, and the crank is coaxially connected with the transmission shaft.

Optionally, the motion conversion mechanism includes a spur gear and a rack, the rack is fixedly connected to the driving cylinder, the rack extends along a direction of linear motion of the driving cylinder, the spur gear is engaged with the rack, and the transmission shaft is coaxially connected to the spur gear.

Optionally, the chain stopper further comprises:

a locking cylinder configured to be fixed within the cabin;

and the bolt extends along the linear motion direction of the locking oil cylinder, one end of the bolt is connected with the locking oil cylinder, and the other end of the bolt stops the motion of the motion conversion mechanism when the knife switch block rotates to a second set position.

Optionally, one end of the bolt connected with the locking oil cylinder is provided with two clamping pieces and a connecting piece, the two clamping pieces are arranged oppositely, the part of the locking oil cylinder is located between the two clamping pieces, and the connecting piece is inserted into the two clamping pieces and the locking oil cylinder simultaneously.

Optionally, the chain stopper further includes an in-cabin support and a protective sheath, the in-cabin support is configured to be fixed in the cabin, the protective sheath and the driving cylinder are fixed on the in-cabin support, the locking cylinder is fixed on the protective sheath, the locking cylinder and a part connected by the bolt are located in the protective sheath, the bolt is inserted into the in-cabin support, and the motion conversion mechanism is rotatably disposed on the in-cabin support.

Optionally, the chain stopper further comprises a sealing element configured to be fixed on a bulkhead in the cabin, the transmission shaft is inserted into the sealing element, an end face sealing ring is arranged on a surface of the sealing element, which is in contact with the bulkhead in the cabin, and a shaft sealing ring is arranged on a surface of the sealing element, which is in contact with the transmission shaft.

Optionally, the chain stopper further comprises a rotating shaft, the rotating shaft is inserted into the extravehicular support, the knife switch block is fixed on the rotating shaft, and the rotating shaft is in transmission connection with the transmission shaft.

Optionally, the chain stopper still includes drive bevel gear and driven bevel gear, drive bevel gear with the transmission shaft coaxial coupling, driven bevel gear with the axis of rotation coaxial coupling.

Optionally, the cabin outer support, the roller and the knife switch block are all made of steel, and the chain stopper further comprises an anti-corrosion zinc block fixed on the cabin outer support.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

the chain stopper is characterized in that the chain stopper is connected with a transmission shaft and a driving oil cylinder respectively through a motion conversion mechanism, linear motion of the driving oil cylinder is converted into rotary motion of the transmission shaft, a knife switch block is fixedly connected with the transmission shaft, the transmission shaft drives the knife switch block to rotate together, so that the rotation of the knife switch block is remotely controlled through the driving oil cylinder, the clamping of an anchor chain is realized when the knife switch block rotates to a first set position, and a person is not required to operate the chain stopper in seawater. And the transmission shaft is rotatably inserted into the transmitted cabin wall, two ends of the transmission shaft are respectively positioned in the cabin and outside the cabin, the power provided by the driving oil cylinder in the cabin can be transmitted to the knife switch block outside the cabin by utilizing the transmission shaft, and meanwhile, the position of the transmission shaft is kept unchanged in the process of stopping the chain, so that the transmission shaft is conveniently sealed, the seawater outside the cabin can be effectively prevented from entering the cabin from the position of the transmission shaft, the driving oil cylinder in the cabin is isolated from the seawater outside the cabin, and the problem of leakage of the oil cylinder soaked in the seawater is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a top view of a chain stopper provided in an embodiment of the present disclosure;

FIG. 2 is a side view of the chain stopper provided by the disclosed embodiment in an operating condition;

FIG. 3 is a side view of the chain stopper provided by the disclosed embodiment in a non-operating state;

FIG. 4 is a front view of the chain stopper provided by the disclosed embodiment;

fig. 5 is a schematic structural diagram of a motion conversion structure provided by an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of direction A-A in FIG. 1 provided by an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of direction B-B in fig. 1 according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Chain stopper is the device that grips the anchor chain under certain circumstances. The anchor chain is retracted through the chain stopper, when the chain stopper is in a non-working state, a knife switch of the chain stopper is arranged at an interval with the anchor chain, and the anchor chain is smoothly retracted in the chain stopper; when the chain stopper is in a working state, a knife switch of the chain stopper clamps the anchor chain, and the anchor chain stops in the chain stopper.

In the related art, the chain stopper comprises a bracket, a knife switch and a hydraulic oil cylinder. The support includes two backup pads and two locating plates, and two backup pads are fixed relatively on the deck, and two locating plates are fixed relatively in same backup pad. A chain guide groove for anchor chain movement is formed between the two supporting plates, the roller shaft is clamped between the two supporting plates, the roller is rotatably sleeved on the roller shaft, and the anchor chain is positioned on the roller and rotates along with the roller. The two positioning plates are respectively provided with a shaft hole and an arc-shaped groove, the rotating shaft is arranged in the shaft holes of the two positioning plates, and the knife switch is rotatably sleeved outside the rotating shaft; the supporting shaft is arranged in the arc-shaped grooves on the two positioning plates. The cylinder body of the hydraulic oil cylinder is hinged on the supporting plate, and the piston rod of the hydraulic oil cylinder is hinged with the middle part of the supporting shaft. A piston rod of the hydraulic oil cylinder stretches relative to the cylinder body, the supporting shaft slides in the arc-shaped groove, and the knife switch rotates around the rotating shaft. When the knife switch is lifted, the anchor chain freely moves in the chain guide groove to drive the roller to rotate around the roller shaft; when the knife switch falls down, the anchor chain is clamped by the knife switch and can be turned up and retracted by utilizing hydraulic remote control.

When the chain stopper is arranged on a loading deck of the semi-submersible ship, the chain stopper can be completely soaked in seawater as the loading deck when the semi-submersible ship works, and the leakage problem can exist when the hydraulic oil cylinder is soaked in the seawater. And the cylinder body of hydraulic cylinder articulates in the backup pad, and hydraulic cylinder's piston rod is articulated with the middle part of back shaft, and the back shaft slides in the arc wall, and the position that this motion is located constantly changes when hydraulic cylinder's piston rod is flexible relative to the cylinder body, can't keep apart hydraulic cylinder and sea water.

The disclosed embodiment provides a chain stopper. Fig. 1 is a top view of a chain stopper provided in an embodiment of the present disclosure, fig. 2 is a side view of the chain stopper provided in an embodiment of the present disclosure in an operating state, and fig. 3 is a side view of the chain stopper provided in an embodiment of the present disclosure in a non-operating state. Referring to fig. 1 to 3, the chain stopper includes:

a propeller shaft 10 configured to be rotatably inserted into a bulkhead of the cabin, both ends of which are located inside and outside the cabin, respectively;

a drive cylinder 21 configured to be fixed in the cabin;

a motion conversion mechanism 22 connected to the drive shaft 10 and the drive cylinder 21, respectively, for converting the linear motion of the drive cylinder 21 into the rotational motion of the drive shaft 10;

an outboard bracket 31 configured to be fixed outboard of the cabin;

a roller 32 rotatably provided on the outboard bracket 31 and configured to rotate with the retraction of the anchor chain;

and a knife switch block 33 which is rotatably arranged on the outboard bracket 31, is fixedly connected with the transmission shaft 10 and is configured to stop the retraction of the anchor chain when rotating to a first set position.

In the present embodiment, the drive cylinder 21 and the motion conversion mechanism 22 are disposed inside the cabin, and the outboard support 31, the roller 32, and the switch blade block 33 are disposed outside the cabin. The driving cylinder 21 includes a cylinder body and a piston rod, one end of the piston rod is slidably disposed in the cylinder body, and the other end of the piston rod is located outside the cylinder body. The rollers 32 are provided with teeth for insertion into the links of the anchor chain. The guillotine block 33 can be blocked in the chain link of the anchor chain to stop the retraction of the anchor chain.

The chain stopper provided by the embodiment of the disclosure is briefly described below with reference to fig. 1 to 3.

The driving oil cylinder 21 is fixed in the cabin, and the cabin wall of the cabin can be used for isolating the driving oil cylinder 21 from seawater outside the cabin, so that the driving oil cylinder 21 is prevented from being soaked in the seawater to cause leakage. The motion conversion mechanism 22 is respectively connected to the transmission shaft 10 and the driving cylinder 21, and can convert the linear motion of the driving cylinder 21 into the rotational motion of the transmission shaft 10, so that the driving cylinder 21 makes the linear motion, and the transmission shaft 10 can be driven to make the rotational motion by the motion conversion mechanism 22. The position of the transmission shaft 10 is kept unchanged during the rotary motion, and the transmission shaft is inserted into the cabin wall of the cabin to be conveniently sealed, so that seawater is effectively prevented from entering the cabin, and the driving oil cylinder 21 in the cabin can be ensured to be isolated from the seawater outside the cabin.

The outboard support 31 is fixed outside the cabin, and the roller 32 is rotatably arranged on the outboard support 31 and can rotate along with the retraction of the anchor chain, so that the anchor chain can be smoothly retracted when passing through the chain stopper. The knife block 33 is rotatably disposed on the outboard bracket 31 and is fixedly connected to the transmission shaft 10, so that the transmission shaft 10 rotates to drive the knife block 33 to rotate together. When the knife switch block 33 rotates to the first set position, the knife switch block 33 can clamp the anchor chain, and the winding and unwinding of the anchor chain are stopped.

According to the embodiment of the anchor chain clamping device, the motion conversion mechanism is respectively connected with the transmission shaft and the driving oil cylinder, the linear motion of the driving oil cylinder is converted into the rotary motion of the transmission shaft, the knife switch block is fixedly connected with the transmission shaft, and the transmission shaft drives the knife switch block to rotate together, so that the rotation of the knife switch block is remotely controlled through the driving oil cylinder, the anchor chain is clamped when the knife switch block rotates to the first set position, and a person does not need to operate the chain stopper in seawater. And the transmission shaft is rotatably inserted into the transmitted cabin wall, two ends of the transmission shaft are respectively positioned in the cabin and outside the cabin, the power provided by the driving oil cylinder in the cabin can be transmitted to the knife switch block outside the cabin by utilizing the transmission shaft, and meanwhile, the position of the transmission shaft is kept unchanged in the process of stopping the chain, so that the transmission shaft is conveniently sealed, the seawater outside the cabin can be effectively prevented from entering the cabin from the position of the transmission shaft, the driving oil cylinder in the cabin is isolated from the seawater outside the cabin, and the problem of leakage of the oil cylinder soaked in the seawater is solved.

In the disclosed embodiment, the first set position is a position where the guillotine block 33 is dropped, when the guillotine block 33 is jamming the anchor chain.

Optionally, as shown in fig. 1, the extravehicular support 31, the roller 32, and the knife switch block 33 are all made of steel, and the chain stopper further includes an anti-corrosion zinc block 50, and the anti-corrosion zinc block 50 is fixed on the extravehicular support 31.

The outboard bracket 31, the roller 32 and the switch block 33 are all made of steel, the anti-corrosion zinc block 50 is fixed on the outboard bracket 31, and as zinc is splashed more than iron, corrosive substances in seawater preferentially react with the anti-corrosion zinc block 50, so that the corrosive substances in the seawater are prevented from corroding the outboard bracket 31, the roller 32 and the switch block 33, and the service life of the chain stopper is prolonged.

Fig. 4 is a front view of the chain stopper provided by the embodiment of the present disclosure. Referring to fig. 4, the extravehicular support 31 optionally includes two support plates 311, and the two support plates 311 are vertically fixed on the deck and are oppositely disposed.

A chain guide groove for the movement of the anchor chain is formed between the two support plates 311, which is convenient for the retraction of the anchor chain.

In practical application, the tops of two backup pads 311 all are equipped with U type breach, can utilize the inside of U type breach to fix switch blade block 33 on the one hand, and on the other hand can make things convenient for switch blade block 33 to rotate in the space between two backup pads 311, blocks the anchor chain.

Optionally, as shown in fig. 4, the chain stopper further includes a roller shaft 34, the roller shaft 34 is installed between two support plates 311, and the roller 32 is rotatably sleeved on the roller shaft 34.

The roller shaft 34 is matched with the two support plates 311 to support and limit the roller 32, and the roller 32 can rotate around the roller shaft 34.

Optionally, the roller 32 and roller shaft 34 may be provided with bushings to protect the roller 32 and roller shaft 34 from damage caused by relative rotation.

Illustratively, the bushings are water lubricated bearings to accommodate the sea water environment in which they are located.

Optionally, as shown in fig. 1, the chain stopper further includes a rotating shaft 35, the rotating shaft 35 is inserted into the outboard bracket 31, the knife switch block 33 is fixed on the rotating shaft 35, and the rotating shaft 35 is in transmission connection with the transmission shaft 10.

The knife switch block 33 is fixed on the rotating shaft 35, and a central shaft can be provided for the rotation of the knife switch block 33 by using the rotating shaft 35; the rotating shaft 35 is in transmission connection with the transmission shaft 10, and the rotating shaft 35 can be used for facilitating the connection between the knife switch block 33 and the transmission shaft 10; the rotating shaft 35 is inserted into the outboard support 31, and the knife block 33 can be rotatably provided in the outboard support 31 by the rotating shaft 35.

Illustratively, the knife block 3 and the rotating shaft 35 are in molded connection, and the connection stability is good.

Optionally, as shown in fig. 1, the chain stopper further comprises a driving bevel gear 36 and a driven bevel gear 37, wherein the driving bevel gear 36 is coaxially connected with the transmission shaft 10, and the driven bevel gear 37 is coaxially connected with the rotating shaft 35.

In practice, as shown in fig. 1, to facilitate the retraction of the chain, the direction of retraction of the chain will be parallel to the walls of the hold, while the direction of rotation of the rollers 32 will be parallel to the walls of the hold. Since the propeller shaft 10 is inserted in the bulkhead of the cabin, the direction of rotation of the propeller shaft 10 is also parallel to the bulkhead of the cabin, i.e. the direction of rotation of the propeller shaft 10 coincides with the direction of rotation of the rollers 32. If the driving bevel gear 36 and the driven bevel gear 37 are not provided, the rotation direction of the knife block 33 must be consistent with the rotation direction of the transmission shaft 10, and at this time, the rotation direction of the knife block 33 is also consistent with the rotation direction of the roller 32, and the taking and placing of the anchor chain can be blocked by the rotation of the knife block 33 anyway, so that the taking and placing of the anchor chain are inconvenient. In the above implementation mode, the driving bevel gear 36 is coaxially connected with the transmission shaft 10, and the driven bevel gear 37 is coaxially connected with the rotating shaft 35, so that the rotating direction of the transmission shaft 10 is perpendicular to the rotating direction of the rotating shaft 35, at this time, the rotating direction of the transmission shaft 10 is perpendicular to the rotating direction of the knife switch block 33, the rotating direction of the roller 32 is also perpendicular to the rotating direction of the knife switch block 33, and the anchor chain can be conveniently taken and placed when the knife switch block 33 is lifted.

Alternatively, as shown in fig. 1, the transmission shaft 10 includes a first transmission shaft 11, a coupling 12 and a second transmission shaft 13 connected in sequence, the first transmission shaft 11 is in transmission connection with the knife block 33, and the second transmission shaft 13 is fixedly connected with the motion conversion mechanism 22.

The length of the drive shaft 10 is extended by the coupling 12 to match the distance between the outboard support 31 and the cabin bulkhead.

Illustratively, the coupling 12 may be a disc coupling.

The disc type coupler is connected through bolts, and is convenient to disassemble.

Illustratively, the actuating cylinder 21 is a double-acting spring cylinder, facilitating adjustment.

Optionally, the chain stopper further comprises a first bearing seat, the first transmission shaft 11 being mounted in the first bearing seat to reduce friction and damage during rotation of the first transmission shaft 11.

Optionally, the chain stopper further comprises a second bearing seat, and the second transmission shaft 13 is installed in the second bearing seat to reduce friction and damage during rotation of the second transmission shaft 13.

In one possible implementation manner of the embodiment of the present disclosure, as shown in fig. 2 and 3, the motion conversion mechanism 22 includes a crank 221 and a rocker 222, one end of the rocker 222 is hinged to the driving cylinder 21, the other end of the rocker 222 is hinged to an eccentric area of the crank 221, and the crank 221 is coaxially connected to the transmission shaft 10.

In practical application, the cylinder body of the driving oil cylinder 21 is fixed in a cabin, and the piston rod of the driving oil cylinder 21 makes linear motion; meanwhile, the transmission shaft 10 is rotatably inserted into the cabin wall, the transmission shaft 10 rotates, the crank 221 is coaxially connected with the transmission shaft 10, and the crank 221 also rotates. The two ends of the rocker 222 are respectively hinged to the piston rod of the driving cylinder 21 and the eccentric area of the crank 221, the piston rod of the driving cylinder 21 makes a linear motion, and the crank 221 and the transmission shaft 10 are driven to make a rotary motion through the rocker 222, so that the linear motion of the driving cylinder 21 is converted into the rotary motion of the transmission shaft 10.

In the implementation manner, the crank 221 and the rocker 222 form a crank-rocker mechanism, which can convert the linear motion of the driving oil cylinder 21 into the rotational motion of the transmission shaft 10, and the position of the transmission shaft inserted into the cabin wall of the cabin remains unchanged in the process of stopping the chain, so that the transmission shaft is conveniently sealed, the seawater outside the cabin is effectively prevented from entering the cabin from the position of the transmission shaft, the driving oil cylinder inside the cabin is isolated from the seawater outside the cabin, and the problem of leakage of the oil cylinder soaked in the seawater is solved.

Fig. 5 is a schematic structural diagram of a motion conversion structure provided in the embodiment of the present disclosure. Referring to fig. 5, in another possible implementation manner of the embodiment of the present disclosure, the motion conversion mechanism 22 includes a spur gear 223 and a rack 224, the rack 224 is fixedly connected to the driving cylinder 21, the rack 224 extends along a direction in which the driving cylinder 21 moves linearly, the spur gear 223 is engaged with the rack 224, and the transmission shaft 10 is coaxially connected to the spur gear 223.

In practical application, the cylinder body of the driving oil cylinder 21 is fixed in a cabin, and the piston rod of the driving oil cylinder 21 makes linear motion; the rack 224 is fixedly connected with the driving cylinder 21, and the rack 224 extends along the direction of the linear movement of the driving cylinder 21, and the rack 224 also moves linearly. Meanwhile, the transmission shaft 10 is rotatably inserted into the cabin wall, and the transmission shaft 10 rotates; the drive shaft 10 is coaxially connected to a spur gear 223, and the spur gear 223 also performs a rotational motion. The spur gear 223 is engaged with the rack 224, the rack 224 is driven by the driving cylinder 21 to perform a linear motion, and the spur gear 223 and the transmission shaft 10 perform a rotational motion together, thereby converting the linear motion of the driving cylinder 21 into a rotational motion of the transmission shaft 10.

In the implementation manner, the straight gear 223 and the rack 224 form a gear-rack mechanism, so that the linear motion of the driving oil cylinder 21 can be converted into the rotary motion of the transmission shaft 10, the position of the transmission shaft inserted into the cabin wall of the cabin is kept unchanged in the process of stopping the chain, the transmission shaft is conveniently sealed, the seawater outside the cabin is effectively prevented from entering the cabin from the position of the transmission shaft, the driving oil cylinder in the cabin is isolated from the seawater outside the cabin, and the problem of leakage of the oil cylinder soaked in the seawater is solved.

Optionally, as shown in fig. 1, the chain stopper further includes:

a lock cylinder 23 configured to be fixed in the cabin;

and a latch 24 extending in a direction in which the lock cylinder 23 linearly moves, one end of which is connected to the lock cylinder 23, and the other end of which stops the movement of the movement conversion mechanism 22 when the knife block 33 is rotated to a second set position.

The locking oil cylinder 23 is fixed in the cabin, and the locking oil cylinder 23 can be isolated from seawater outside the cabin by using the cabin wall of the cabin, so that the driving oil cylinder 21 is prevented from being soaked in the seawater to cause leakage. The latch 24 extends along the direction of the linear motion of the locking cylinder 23, and one end of the latch is connected with the locking cylinder 23, so that the locking cylinder 23 makes a linear motion to drive the latch 24 to make a linear motion. When the knife block 33 is rotated to the second set position, the plug pin 24 is inserted into the motion trajectory of the motion conversion mechanism 22, stopping the motion of the motion conversion mechanism 22. And the bolt 24 replaces the locking oil cylinder 23 to be inserted into the motion track of the motion conversion mechanism 22, so that the piston rod of the locking oil cylinder 23 can be effectively prevented from being damaged in the process of being inserted into the motion track of the motion conversion mechanism 22, and the piston rod of the locking oil cylinder 23 is protected.

In the embodiment of the present disclosure, the second setting position is a position where the switch block 33 is lifted, at this time, the switch block 33 does not shield the anchor chain completely, the anchor chain is freely retracted and extended in the chain stopper, and the anchor chain is conveniently taken and placed. Meanwhile, the state of the knife switch block 33 is unstable, if the locking oil cylinder 33 does not push the plug pin 24 to be inserted into the motion track of the motion conversion mechanism 22 and the motion of the motion conversion mechanism 22 is stopped, the knife switch block 33 falls down when the driving oil cylinder 21 fails, so that the anchor chain is clamped, and the normal retraction of the anchor chain is influenced. If the lock cylinder 33 pushes the plug pin 24 to be inserted into the motion track of the motion conversion mechanism 22 to stop the motion of the motion conversion mechanism 22, the guillotine block 33 will not be stuck to clamp the anchor chain even if the driving cylinder 21 fails.

Accordingly, the latch 24 is spaced apart from the motion converting mechanism 22 when the knife block 33 rotates to the first setting position, so that the motion converting mechanism 22 converts the linear motion of the driving cylinder 21 into the rotational motion of the transmission shaft 10, and the transmission shaft drives the knife block 33 to rotate together, so that when the knife block 33 rotates to the first setting position, the knife block 33 will block the anchor chain, and the retraction of the anchor chain is stopped.

Fig. 6 is a schematic structural diagram of a direction a-a in fig. 1 according to an embodiment of the present disclosure. Referring to fig. 6, alternatively, the end of the plug 24 connected to the lock cylinder 23 has two clamping members 241 and a connecting member 242, the two clamping members 241 are disposed opposite to each other, a portion of the lock cylinder 23 is located between the two clamping members 241, and the connecting member 242 is inserted into both the two clamping members 241 and the lock cylinder 23.

Through set up two holder 241 in the one end of bolt 24 is relative, can set up the part of locking cylinder 23 between two holder 241, reuse connecting piece 242 and insert simultaneously and establish in two holder 241 and locking cylinder 23, can be connected bolt 24 and locking cylinder 23 detachably, conveniently assemble, maintain or change the chain stopper.

And the two clamping pieces 241 and the connecting piece 242 hinge the bolt 24 and the locking cylinder 23 together, so that the included angle between the axis of the bolt 24 and the axis of the locking cylinder 23 can be adjusted to facilitate the bolt 24 to be inserted into the motion track of the motion conversion mechanism 22.

Illustratively, the clamping member 241 is a flat plate and the connecting member 242 is a connecting pin.

Alternatively, as shown in fig. 1 and 6, the chain stopper further includes an in-cabin bracket 25 and a protective sleeve 26, the in-cabin bracket 25 is configured to be fixed in the cabin, the protective sleeve 26 and the driving cylinder 21 are fixed on the in-cabin bracket 25, the locking cylinder 23 is fixed on the protective sleeve 26, a portion where the locking cylinder 23 and the latch pin 24 are connected is located in the protective sleeve 26, the latch pin 24 is inserted in the in-cabin bracket 25, and the motion conversion mechanism 22 is rotatably provided on the in-cabin bracket 25.

The protective sleeve 26 and the driving cylinder 21 are fixed on the support 25 in the cabin, the locking cylinder 23 is fixed on the protective sleeve 26, the locking cylinder 23 is fixed on the support 25 in the cabin through the protective sleeve 26, and a certain distance is formed between the locking cylinder 23 and the support 25 in the cabin, so that the part where the locking cylinder 23 and the bolt 24 are connected is positioned in the protective sleeve 26, and the bolt 24 is inserted in the support 25 in the cabin. In addition, the motion conversion mechanism 22 is rotatably arranged on the cabin inner bracket 25, so that the cabin inner bracket 25 can be used for supporting and limiting the protective sleeve 26, the driving oil cylinder 21, the locking oil cylinder 23, the bolt 24 and the motion conversion mechanism 22, and the bolt 24 can be conveniently inserted into the motion track of the motion conversion mechanism 22 to stop the motion of the motion conversion mechanism 22.

In practice, complete drying of the cabin cannot be achieved. The connecting part of the locking oil cylinder 23 and the bolt 24 is positioned in the protective sleeve 26, and the protective sleeve 26 can be used for protecting the part of the piston rod of the locking oil cylinder 23 extending out of the cylinder body, so that the part of the piston rod of the locking oil cylinder 23 extending out of the cylinder body is prevented from being corroded by water vapor entering the cabin.

Illustratively, the lock cylinder 23 is flanged onto the protective sleeve 26.

The locking oil cylinder 23 and the protective sleeve 26 are connected through bolts, so that the locking oil cylinder is convenient to disassemble and assemble.

Illustratively, the protective sleeve 26 is fixed on the cabin bracket 25 through bolts, so as to facilitate assembly and disassembly.

Optionally, as shown in FIG. 1, the chain stopper further includes a seal 40. Fig. 7 is a schematic structural diagram of a direction B-B in fig. 1 according to an embodiment of the present disclosure. Referring to fig. 7, a sealing member 40 is configured to be fixed to a bulkhead in the cabin, the propeller shaft 10 is inserted into the sealing member 40, a face seal 41 is provided on a surface of the sealing member 40 contacting the bulkhead in the cabin, and a shaft seal 42 is provided on a surface of the sealing member 40 contacting the propeller shaft 10.

In the cabin, a sealing member 40 is sleeved outside the transmission shaft 10 and fixed on the bulkhead of the cabin, and the transmission shaft 10 is sealed by the sealing member 40. The sealing member 40 is fixed on the bulkhead in the cabin, and the surface of the sealing member 40, which is contacted with the bulkhead in the cabin, is provided with an end face sealing ring 41, so that seawater can be effectively prevented from entering the cabin from the space between the sealing member 40 and the bulkhead in the cabin; the transmission shaft 10 is inserted in the sealing element 40, and the surface of the sealing element 40, which is in contact with the transmission shaft 10, is provided with a shaft sealing ring 42, so that seawater can be effectively prevented from entering the cabin from the space between the sealing element 40 and the transmission shaft 10. Sealing against each possible leakage area of the seal 40 effectively prevents the ingress of seawater into the hold.

Illustratively, as shown in fig. 7, both ends of the seal member 40 are provided with shaft seal rings 42.

The shaft seal rings 42 at the two ends of the sealing element 40 are matched with the end face seal ring 41, and two-stage sealing is formed on the end face and the axial direction, so that the sealing performance is good.

In practical application, the sealing member 40 is fixed on the bulkhead in the cabin through bolts, so that the assembly and disassembly are convenient.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A chain stopper, characterized in that the chain stopper comprises:

a propeller shaft (10) configured to be rotatably inserted into a bulkhead of a cabin, both ends of the propeller shaft being located inside and outside the cabin, respectively;

a drive cylinder (21) configured to be fixed within the cabin;

a motion conversion mechanism (22) which is connected to the transmission shaft (10) and the drive cylinder (21), respectively, and converts the linear motion of the drive cylinder (21) into the rotational motion of the transmission shaft (10);

an outboard bracket (31) configured to be fixed outboard of the boat;

a roller (32) rotatably provided on the outboard bracket (31) and configured to rotate with the retraction of the anchor chain;

and the brake knife block (33) is rotatably arranged on the extravehicular bracket (31), is fixedly connected with the transmission shaft (10), and is configured to stop the retraction of the anchor chain when rotating to a first set position.

2. The chain stopper according to claim 1, characterized in that the motion conversion mechanism (22) comprises a crank (221) and a rocker (222), one end of the rocker (222) is hinged with the driving cylinder (21), the other end of the rocker (222) is hinged on an eccentric area of the crank (221), and the crank (221) is coaxially connected with the transmission shaft (10).

3. The chain stopper as claimed in claim 1, wherein said motion conversion mechanism (22) comprises a spur gear (223) and a rack (224), said rack (224) is fixedly connected with said driving cylinder (21), and said rack (224) extends along the direction of linear motion of said driving cylinder (21), said spur gear (223) is engaged with said rack (224), and said transmission shaft (10) is coaxially connected with said spur gear (223).

4. The chain stopper of any one of claims 1 to 3, further comprising:

a locking cylinder (23) configured to be fixed within the cabin;

the bolt (24) extends along the linear motion direction of the locking oil cylinder (23), one end of the bolt is connected with the locking oil cylinder (23), and the other end stops the motion of the motion conversion mechanism (22) when the knife switch block (33) rotates to a second set position;

when the knife switch block (33) is at the second setting position, the knife switch block (33) has no shielding on the anchor chain.

5. The chain stopper as claimed in claim 4, wherein the end of the latch (24) connected to the locking cylinder (23) has two clamping members (241) and a connecting member (242), the two clamping members (241) are disposed opposite to each other, a portion of the locking cylinder (23) is located between the two clamping members (241), and the connecting member (242) is inserted into both the two clamping members (241) and the locking cylinder (23).

6. A chain stopper according to claim 4, characterized in that the chain stopper further comprises an inboard support (25) and a protective sleeve (26), the inboard support (25) being configured to be fixed in the cabin, the protective sleeve (26) and the drive cylinder (21) being fixed on the inboard support (25), the lock cylinder (23) being fixed on the protective sleeve (26), the portion of the lock cylinder (23) to which the latch (24) is connected being located in the protective sleeve (26), the latch (24) being inserted in the inboard support (25), the motion conversion mechanism (22) being rotatably provided on the inboard support (25).

7. A chain stopper according to any one of claims 1 to 3, characterized in that the chain stopper further comprises a sealing member (40), the sealing member (40) being configured to be fixed to a bulkhead in the cabin, the drive shaft (10) being inserted into the sealing member (40), a face seal (41) being provided on a surface of the sealing member (40) contacting the bulkhead in the cabin, and a shaft seal (42) being provided on a surface of the sealing member (40) contacting the drive shaft (10).

8. A chain stopper according to any one of claims 1 to 3, further comprising a rotating shaft (35), wherein the rotating shaft (35) is inserted into the outboard bracket (31), the knife block (33) is fixed on the rotating shaft (35), and the rotating shaft (35) is in transmission connection with the transmission shaft (10).

9. A chain stopper according to claim 8 characterized in that the chain stopper further comprises a drive bevel gear (36) and a driven bevel gear (37), the drive bevel gear (36) being coaxially connected with the drive shaft (10) and the driven bevel gear (37) being coaxially connected with the rotation shaft (35).

10. The chain stopper according to any one of claims 1-3, wherein the outboard support (31), the roller (32) and the knife switch block (33) are all made of steel, the chain stopper further comprises an anti-corrosion zinc block (50), and the anti-corrosion zinc block (50) is fixed on the outboard support (31).