CN113200123B

CN113200123B - Chain stopper

Info

Publication number: CN113200123B
Application number: CN202110337685.9A
Authority: CN
Inventors: 白宗; 胡发国; 明国军; 张勇勇; 赵建虎; 徐晨昕
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-12-20
Anticipated expiration: 2041-03-30
Also published as: CN113200123A

Abstract

The present disclosure provides a chain stopper, including: a support; the roller assembly comprises a roller and a rotating shaft, two ends of the rotating shaft are fixedly inserted on the bracket, and the roller is movably sleeved on the rotating shaft; a knife assembly comprising: the first end of the knife switch block is rotatably arranged on the support, the rotating central axis of the knife switch block is perpendicular to the rotating shaft, the knife switch block and the rotating shaft are distributed at intervals in the axial direction of the rotating central axis of the knife switch block, and the knife switch control part is positioned on the support and is used for controlling the knife switch block to rotate; and the locking assembly is positioned on the support and used for driving the switch blade block to slide along the axial direction of the rotation central axis of the switch blade block. The anchor chain can be still firmly locked when the switch blade block is worn, so that the maintenance and replacement period of the switch blade is prolonged, and the switch blade is convenient to use.

Description

Chain stopper

Technical Field

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

Background

A chain stopper is a device for gripping an anchor chain when a vessel is underway or anchored. Chain stopper usually cooperates with the anchor machine to use, usually blocks the anchor chain after the anchor is broken or when the anchor is retrieved to the anchor lip to bear the pulling force of anchor and anchor chain when withdrawing anchor and mooring, in order to avoid anchor sprocket bearing weight.

The chain stopper in the related art generally includes: support, gyro wheel, plug-in strip and control cylinder. The roller is rotatably sleeved on a rotating shaft of the support, one end of the knife switch is hinged to the support, a rotating central axis of the knife switch is perpendicular to a rotating central axis of the roller, and the control oil cylinder is used for controlling the knife switch to rotate around a hinged point. When the anchor chain needs to be locked, the oil cylinder is controlled to control the switch blade to approach the roller, so that the distance between the switch blade and the roller is reduced until the anchor chain is clamped between the switch blade and the roller; when the unlocking is needed, the oil cylinder is controlled to control the knife switch to be far away from the roller.

However, after a period of use, the side of the blade that is used to lock the anchor chain tends to wear away, resulting in a blade that is less effective at locking the anchor chain. Therefore, the knife switch needs to be maintained and replaced frequently, the maintenance cost is increased, and the use is inconvenient.

Disclosure of Invention

The embodiment of the disclosure provides a chain stopper, which can still firmly lock an anchor chain when a knife switch block is worn, prolongs the maintenance and replacement period of the knife switch and is convenient to use. The technical scheme is as follows:

the disclosed embodiment provides a chain stopper, chain stopper includes: a support; the roller assembly comprises a roller and a rotating shaft, two ends of the rotating shaft are fixedly inserted on the bracket, and the roller is movably sleeved on the rotating shaft; a blade assembly comprising: the first end of the knife switch block is rotatably arranged on the bracket, the rotation central axis of the knife switch block is perpendicular to the rotating shaft, the knife switch block and the rotating shaft are distributed at intervals in the axial direction of the rotation central axis of the knife switch block, and the knife switch control piece is positioned on the bracket and is used for controlling the rotation of the knife switch block; and the locking assembly is positioned on the support and is used for driving the switch knife block to slide along the axial direction of the rotation central axis of the switch knife block.

In one implementation of the disclosed embodiment, the locking assembly includes: the brake knife comprises a pushing shaft and a locking control piece, wherein the pushing shaft is installed on the support and can slide along the axial direction of the pushing shaft, the locking control piece is used for driving the pushing shaft to slide along the axial direction of the pushing shaft, the first end of the brake knife block is movably sleeved on the pushing shaft, and the brake knife block is axially fixed with the pushing shaft.

In another implementation manner of the embodiment of the present disclosure, the locking control member includes a first pushing cylinder, the first pushing cylinder is located on the bracket, a piston rod of the first pushing cylinder is connected to one end of the pushing shaft, and the pushing shaft can rotate relative to the piston rod of the first pushing cylinder.

In another implementation manner of the embodiment of the present disclosure, the locking control element further includes a second pushing cylinder, the second pushing cylinder is located on the bracket, and the second pushing cylinder is configured to push the knife block to slide along the axial direction of the pushing shaft at the second end of the knife block.

In another implementation manner of the embodiment of the present disclosure, the switch control element includes a switch control cylinder, a cylinder of the switch control cylinder is hinged to the support ball, and a piston rod of the switch control cylinder is hinged to the first end of the switch block.

In another implementation manner of the embodiment of the present disclosure, the chain stopper further includes a latch assembly, and the latch assembly includes: the plug pin control mechanism is positioned on the support and used for controlling the plug pin to be inserted into the plug pin hole when the switch blade block rotates to the plug pin hole and the plug pin is coaxial.

In another implementation of the disclosed embodiment, the latch control mechanism includes: the driving mechanism comprises a driving motor, a driving gear and a driving rack, wherein an output shaft of the driving motor is in transmission connection with the driving gear, the driving rack is meshed with the driving gear, and one end of the driving rack is connected with one end of the locking bolt.

In another implementation manner of the embodiment of the present disclosure, the latch control mechanism further includes: the position sensor and the driving motor are electrically connected with the controller, the position sensor is used for detecting switch blade position information, the switch blade position information is used for reflecting whether the bolt hole is coaxial with the locking bolt, and the controller is used for controlling the driving motor to work based on the switch blade position information.

In another implementation manner of the embodiment of the present disclosure, the latch control mechanism further includes a mounting plate, the mounting plate is located on the bracket, the driving motor is located on the mounting plate, a guide groove is formed on a plate surface of the mounting plate, and the driving rack is slidably disposed in the guide groove.

In another implementation manner of the embodiment of the present disclosure, the roller assembly further includes a bushing, an annular lubrication groove is formed in an inner wall surface of the bushing, the bushing is sleeved outside the rotating shaft, the roller is sleeved outside the bushing, a lubrication oil passage is arranged in the rotating shaft, one end of the lubrication oil passage is located at an end of the rotating shaft, the other end of the lubrication oil passage is located on an outer wall surface of the rotating shaft, and the other end of the lubrication oil passage is communicated with the annular lubrication groove.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

in the chain stopper provided by the embodiment of the disclosure, the first end of the knife switch block is rotatably installed on the support, and the rotation central axis of the knife switch block is perpendicular to the rotating shaft, so that the knife switch block is controlled by the knife switch control element to rotate, and the knife switch block is gradually close to the roller or far away from the roller in the rotating process so as to achieve the purpose of closing or opening the gate. And a locking assembly is also arranged in the chain stopper and can drive the knife switch block to slide along the axial direction of the rotation central axis of the knife switch block. Because in the axial of the rotation axis of the switch blade block, the switch blade block and the rotating shaft are distributed at intervals, and the side surface of the roller opposite to the switch blade block is an arc surface, the locking assembly controls the switch blade block to gradually slide towards the direction of the rotating shaft along the rotation axis, and the distance between the switch blade block and the roller can be gradually reduced. This allows compensating for the size of the wear on the lateral surfaces of the block, even if they are worn after a period of use, by controlling the axial sliding of the block along the central axis of rotation. Therefore, under the condition that the knife switch block is worn, the chain stopper can still firmly lock the anchor chain, the maintenance and replacement period of the knife switch is prolonged, and the use is convenient.

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 a chain stopper provided by embodiments of the present disclosure;

FIG. 3 is an elevation view of a chain stopper provided by an embodiment of the present disclosure;

FIG. 4 is an elevation view of a latch assembly provided by an embodiment of the present disclosure;

FIG. 5 is a top view of a latch assembly provided by embodiments of the present disclosure;

FIG. 6 is a side view of a latch assembly provided by embodiments of the present disclosure.

The various symbols in the figures are illustrated as follows:

1-bracket, 11-supporting plate, 12-open slot;

21-roller, 22-rotating shaft, 23-bush, 24-annular lubricating groove and 25-lubricating oil channel;

31-a knife switch block, 32-a knife switch control oil cylinder, 33-a joint bearing and 34-a bolt hole;

4-locking assembly, 41-pushing shaft, 42-first pushing oil cylinder, 43-second pushing oil cylinder, 44-outer flange, 45-connecting ring;

51-dead bolt, 52-drive motor, 53-drive gear, 54-drive rack, 55-mounting plate, 56-position sensor, 57-guide slot.

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.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," "third," and the like, as used in the description and in the claims of the present disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item appearing in front of the word "comprising" or "comprises" includes the element or item listed after the word "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

Figure 1 is a top view of a chain stopper provided in embodiments of the present disclosure. As shown in fig. 1, the chain stopper includes: support 1, wheel components, knife switch subassembly and locking subassembly 4.

Figure 2 is a side view of a chain stopper provided by embodiments of the present disclosure. As shown in FIG. 2, the roller assembly comprises a roller 21 and a rotating shaft 22, two ends of the rotating shaft 22 are fixedly inserted into the bracket 1, and the roller 21 is movably sleeved on the rotating shaft 22.

As shown in fig. 2, the blade assembly includes: the knife switch comprises a knife switch block 31 and a knife switch control piece, wherein the first end of the knife switch block 31 is rotatably arranged on the bracket 1, the rotation central axis of the knife switch block 31 is vertical to the rotating shaft 22, and the knife switch control piece is positioned on the bracket 1 and is used for controlling the knife switch block 31 to rotate.

Figure 3 is an elevation view of a chain stopper provided by embodiments of the present disclosure. As shown in fig. 3, the blade block 31 and the rotary shaft 22 are spaced apart from each other in the axial direction of the central axis of rotation of the blade block 31.

As shown in fig. 1 and 3, a locking assembly 4 is disposed on the bracket 1, and the locking assembly 4 is used for driving the knife block 31 to slide along the axial direction of the central axis of rotation of the knife block 31.

In the chain stopper provided by the embodiment of the disclosure, the first end of the knife block 31 is rotatably installed on the bracket 1, and the rotation central axis of the knife block 31 is perpendicular to the rotating shaft 22, so that the knife block 31 can gradually approach the roller 21 or be far away from the roller 21 in the rotating process by controlling the rotation of the knife block 31 through the knife control member, thereby achieving the purpose of closing or opening the gate. And, still be provided with locking subassembly 4 in the chain stopper, locking subassembly 4 can drive the axial of switch blade piece 31 along the axis of rotation of switch blade piece 31 and slide. Since the knife block 31 and the rotating shaft 22 are spaced apart from each other in the axial direction of the central axis of rotation of the knife block 31, and the side surface of the roller 21 opposite to the knife block 31 is a circular arc surface, the distance between the knife block 31 and the roller 21 is gradually reduced during the locking assembly 4 controls the knife block 31 to gradually slide along the central axis of rotation in the direction of the rotating shaft 22. This allows compensating for the size of the wear on the lateral surface of the block 31 by controlling the axial sliding of the block 31 along the rotation axis, even if the latter is worn after a period of use. Therefore, under the condition that the knife switch block 31 is worn, the chain stopper can still firmly lock the anchor chain, the maintenance and replacement period of the knife switch is prolonged, and the use is convenient.

In the embodiment of the present disclosure, as shown in fig. 1, 2 and 3, the bracket 1 may include two supporting plates 11, and the two supporting plates 11 are relatively fixed on the deck. A chain guide groove for chain movement is formed between the two support plates 11, the rotating shaft 22 is clamped between the two support plates 11, and two ends of the rotating shaft 22 are respectively inserted into the two support plates 11. The roller 21 is rotatably sleeved outside the rotating shaft 22, and the anchor chain is positioned on the roller 21 and rotates along with the roller 21.

As shown in fig. 1, the two support plates 11 are provided with open slots 12 on the side edges, and the two ends of the knife block 31 are clamped in the two open slots 12. The opening groove 12 of one support plate 11 is used for hinging the first end of the knife block 31, and the opening groove 12 of the other support plate 11 is used for enabling the second end of the knife block 31 to fall into the opening groove 12 after the knife block 31 rotates. Therefore, after the switch blade block 31 intercepts the anchor chain, the external force borne by the switch blade block 31 can be transmitted to the support 1 through the open groove 12 without being borne by a gate component, and the reliability of the chain stopper is improved.

In one implementation, as shown in fig. 1, the locking assembly 4 includes: a pushing shaft 41 and a locking control member, the pushing shaft 41 being mounted on the bracket 1 and being slidable in the axial direction of the pushing shaft 41. The locking control member is used for driving the pushing shaft 41 to slide along the axial direction of the pushing shaft 41, the first end of the knife switch block 31 is movably sleeved on the pushing shaft 41, and the knife switch block 31 and the pushing shaft 41 are axially fixed.

As shown in fig. 1, the pushing shaft 41 is installed in the opening slot 12 of one supporting plate 11, and two connecting plates perpendicular to the supporting plate 11 are further disposed on the surface of the supporting plate 11, and the two connecting plates are parallel and spaced apart and are flush with two side walls of the opening slot 12, respectively. The connecting plate is further provided with a mounting hole for inserting the pushing shaft 41, so that the pushing shaft 41 can slide on the connecting plate along the axial direction of the pushing shaft 41.

Wherein, the first end of the knife switch block 31 is rotatably sleeved on the pushing shaft 41, and the pushing shaft 41 is used as the installation base of the knife switch, so that the knife switch block 31 is hinged on the bracket 1. While the blade block 31 is also constrained to the pushing shaft 41 and cannot slide back and forth on the pushing shaft 41. Therefore, the locking control member drives the pushing shaft 41 to slide in the axial direction, so that the knife switch block 31 can be indirectly pushed to slide in the axial direction. The purpose of adjusting the distance between the knife switch block 31 and the roller 21 is realized, so that the worn size on the side surface of the knife switch block 31 can be compensated, the chain stopper can still firmly lock the anchor chain, and the maintenance and replacement period of the knife switch is prolonged.

In another implementation, the pushing shaft 41 is fixed on the bracket 1, the first end of the knife block 31 is movably sleeved on the pushing shaft 41, and the locking control member is used for driving the knife block 31 to slide on the pushing shaft 41.

Wherein the pushing shaft 41 is fixed on the support 1, i.e. the pushing shaft 41 does not slide or rotate axially on the support 1. The first end of the knife block 31 is rotatably sleeved on the pushing shaft 41, and the pushing shaft 41 is used as the installation base of the knife, so that the knife block 31 is hinged on the bracket 1. And the knife block 31 can slide on the pushing shaft 41 to and fro, so that the knife block 31 can be directly driven to slide in the axial direction by the locking control member. The purpose of adjusting the distance between the knife switch block 31 and the roller 21 is realized, so that the worn size on the side surface of the knife switch block 31 can be compensated, the chain stopper can still firmly lock the anchor chain, and the maintenance and replacement period of the knife switch is prolonged.

Alternatively, as shown in fig. 1, the locking control member includes a first push cylinder 42, the first push cylinder 42 is located on the bracket 1, a piston rod of the first push cylinder 42 is connected with one end of the push shaft 41, and the push shaft 41 can rotate with respect to the piston rod of the first push cylinder 42.

As shown in fig. 1, the cylinder of the first pushing cylinder 42 is mounted on the support plate 11 of the bracket 1, and the end of the piston rod of the first pushing cylinder 42 is connected to the end of the pushing shaft 41. Thus, when the piston rod of the first push cylinder 42 extends, the push shaft 41 can also extend and contract together. So as to drive the knife switch block 31 to move, and realize the purpose of adjusting the distance between the knife switch block 31 and the roller 21.

Illustratively, as shown in fig. 1, the end of the pushing shaft 41 and the end of the piston rod of the first pushing cylinder 42 are provided with outer flanges 44, two outer flanges 44 are butted together, and the two outer flanges 44 are connected together by a connecting ring 45.

The connecting ring 45 includes two detachably connected half ring blocks, and a half ring groove is formed in the inner wall surface of each half ring block. The two semi-ring blocks can be combined into a block structure in a circular ring shape after being butted, and the semi-ring grooves of the two semi-ring blocks can also be combined into a complete circular groove. Wherein the annular recess is adapted to receive two outer flanges 44 that are butted together. That is, after the two outer flanges 44 are butted, the two half blocks are covered outside the two outer flanges 44, and the two half blocks are connected to connect the piston rod of the first push cylinder 42 and the push shaft 41.

Since the two outer flanges 44 are rotatable in the annular grooves, the purpose of enabling the pushing shaft 41 to rotate with respect to the piston rod of the first pushing cylinder 42 is achieved by the connecting ring 45. In this way, during the rotation of the knife switch block 31, even if the knife switch block 31 drives the pushing shaft 41 to rotate together, the piston rod of the first pushing cylinder 42 will not be affected, so that the first pushing cylinder 42 can normally drive the pushing shaft 41 to move.

Optionally, as shown in fig. 1 and 3, the locking control member further comprises a second pushing cylinder 43, the second pushing cylinder 43 is located on the bracket 1, and the second pushing cylinder 43 is used for pushing the knife block 31 to slide along the axial direction of the pushing shaft 41 at the second end of the knife block 31.

In the embodiment of the present disclosure, the first push cylinder 42 and the second push cylinder 43 are respectively installed on the two support plates 11. The first and

second push cylinders

42 and 43 are used to push the guillotine block 31 together to slide in the axial direction along the push shaft 41. By applying external force to both ends of the blade block 31 at the same time, the blade block 31 can be more smoothly axially slid.

When the second end of the knife block 31 is rotated into the opening groove 12 of the supporting plate 11, the second pushing cylinder 43 can start to operate, the piston rod of the second pushing cylinder 43 extends to abut against the knife block 31, and the knife block 31 is pushed to move along the axial direction of the pushing shaft 41.

Optionally, the knife control member comprises a knife control cylinder 32, a cylinder of the knife control cylinder 32 is in spherical hinge joint with the bracket 1, and a piston rod of the knife control cylinder 32 is in hinge joint with the first end of the knife block 31.

Illustratively, as shown in fig. 2, the cylinder of the knife control cylinder 32 is connected with the bracket 1 through a joint bearing 33.

Because the knife switch block 31 needs to move axially along with the pushing shaft 41, the cylinder barrel of the knife switch control oil cylinder 32 is hinged with the support 1 through a ball joint, so that the knife switch control oil cylinder 32 can adapt to a deflection angle generated when the knife switch block 31 is pushed, and the piston rod of the knife switch control oil is prevented from being damaged due to stress.

And, since the end of the blade block 31 connected with the blade control cylinder 32 is moved in an arc when the blade block 31 is rotated. Therefore, the cylinder barrel of the knife switch control oil cylinder 32 is hinged with the support 1 through a ball joint, the knife switch control oil cylinder 32 can adapt to the deflection angle generated when the knife switch block 31 rotates, and the piston rod of the knife switch control oil is prevented from being damaged due to stress.

FIG. 4 is a front view of a latch assembly provided by embodiments of the present disclosure. As shown in fig. 4, the chain stopper further includes a latch assembly, the latch assembly including: the locking device comprises a locking bolt 51 and a bolt control mechanism, wherein a bolt hole 34 for inserting the locking bolt 51 is formed in the second end of the knife switch block 31, the axial direction of the bolt hole 34 is perpendicular to the rotating shaft 22, the bolt control mechanism is positioned on the support 1 and is used for controlling the locking bolt 51 to be inserted into the bolt hole 34 when the knife switch block 31 rotates until the bolt hole 34 is coaxial with the locking bolt 51.

Wherein the plug pin assembly comprises a dead bolt 51 and a plug pin control mechanism which can control the dead bolt 51 to be inserted into the plug pin hole 34 when the blade block 31 is rotated to a state where the plug pin hole 34 is coaxial with the dead bolt 51. That is, the locking bolt 51 is used to lock the knife block 31, thereby preventing the knife block 31 from loosening due to large external force.

Illustratively, fig. 5 is a top view of a latch assembly provided by an embodiment of the present disclosure. FIG. 6 is a side view of a latch assembly provided by embodiments of the present disclosure. As shown in fig. 4, 5 and 6, the latch control mechanism includes: the locking bolt comprises a driving motor 52, a driving gear 53 and a driving rack 54, wherein an output shaft of the driving motor 52 is in transmission connection with the driving gear 53, the driving rack 54 is meshed with the driving gear 53, and one end of the driving rack 54 is connected with one end of the locking bolt 51.

After the switch block 31 rotates the open slot 12 and the pin hole 34 is coaxial with the lock pin 51, the driving motor 52 starts to work, the output shaft of the driving motor 52 drives the driving gear 53 to rotate, the driving gear 53 rotates to enable the driving rack 54 to move in a telescopic mode, and therefore the driving rack 54 can drive the lock pin 51 to move in a telescopic mode together, the lock pin 51 is controlled to be inserted into the pin hole 34, the switch block 31 is locked in the open slot 12, and the problem that the switch block 31 is loosened due to large external force is solved.

As shown in fig. 4, 5 and 6, the latch control mechanism further includes a mounting plate 55, the mounting plate 55 is located on the bracket 1, the driving motor 52 is located on the mounting plate 55, a guide slot 57 is provided on a plate surface of the mounting plate 55, and the driving rack 54 is slidably disposed in the guide slot 57.

Wherein the mounting plate 55 may be detachably mounted on the support plate 11 of the stand 1 by means of screws. The drive motor 52 may also be removably mounted to the mounting plate 55 by screws. The driving rack 54 is slidably disposed in the guide groove 57 such that the driving rack 54 can be smoothly moved in a set direction, thereby allowing the dead bolt 51 to be accurately inserted into the bolt hole 34.

Illustratively, the latch control mechanism further comprises: a controller and position sensor 56, the position sensor 56 and the drive motor 52 being electrically connected to the controller, the position sensor 56 being configured to detect blade position information indicative of whether the latch bore 34 is coaxial with the deadbolt 51, the controller being configured to control operation of the drive motor 52 based on the blade position information.

The position sensor 56 may be a proximity switch, which may include a transmitter mounted on the support plate 11 and a receiver for transmitting infrared light. A receiver is mounted on a second end of the guillotine block 31, the receiver being adapted to receive the infrared light emitted by the emitter. Also, when the receiver is installed, the second end of the knife block 31 may be controlled to fall into the open slot 12, so that the pin hole 34 and the dead bolt 51 are maintained in a coaxial state. At this time, the receiver is mounted to the second end of the blade block 31 so that the receiver can just receive the infrared light emitted from the emitter. Thus, when the receiver receives the infrared light from the transmitter, it can be determined that the bolt hole 34 and the dead bolt 51 are coaxial, and the controller can control the operation of the driving motor 52.

The Controller may be a Programmable Logic Controller (PLC), which uses a Programmable memory, and stores therein instructions for performing operations such as Logic operation, sequence control, timing, counting, and arithmetic operation, and controls various devices through digital or analog input/output.

In the embodiment of the present disclosure, the controller may further obtain the on-off information of the knife switch, which is input by a technician and used to indicate whether to open the knife switch block 31. When the controller receives the switch on/off information indicating that the switch block 31 is to be opened, the controller controls the driving motor 52 to operate to retract the locking bolt 51.

Optionally, as shown in fig. 2, the roller assembly further includes a bushing 23, an inner wall surface of the bushing 23 is provided with an annular lubrication groove 24, the bushing 23 is sleeved outside the rotating shaft 22, and the roller 21 is sleeved outside the bushing 23. A lubricating oil channel 25 is arranged in the rotating shaft 22, one end of the lubricating oil channel 25 is located at the end of the rotating shaft 22, the other end of the lubricating oil channel 25 is located on the outer wall surface of the rotating shaft 22, and the other end of the lubricating oil channel 25 is communicated with the annular lubricating groove 24.

Illustratively, as shown in fig. 2, the roller assembly includes two bushings 23, and the two bushings 23 are sleeved on the rotating shaft 22 at intervals. And two lubricating oil channels 25 are arranged in the rotating shaft 22, one ends of the two lubricating oil channels 25 are respectively positioned at two ends of the rotating shaft 22, and the other ends of the two lubricating oil channels 25 are respectively communicated to the annular lubricating grooves 24 of the two bushings 23. This makes it possible to introduce lubricant into the annular lubrication grooves 24 of the two bushings 23 from the ends of the two shafts 22, respectively, so that the bushings 23 rotate outside the shafts 22. And after the lubricating oil is injected, one ends of the two lubricating oil channels 25 are plugged by a plug to avoid the leakage of the lubricating oil.

The chain stopper provided in the embodiment of the disclosure has the following use flow:

before the ship needs to be anchored, the knife block 31 is pulled by the knife control cylinder 32, so that the second end of the knife block 31 leaves the open slot 12. And then controlling the anchor machine to start anchoring until the anchoring operation is finished. Then, the knife control cylinder 32 pushes the knife block 31 so that the second end of the knife block 31 returns to the open groove 12. Then, the driving motor 52 is controlled to operate so that the dead bolt 51 is inserted into the bolt hole 34, ensuring that the knife block 31 is not loosened.

When the ship needs to leave the anchorage, the driving motor 52 is controlled to operate so that the dead bolt 51 is disengaged from the bolt hole 34. The block 31 is then pulled by the ram control cylinder 32 so that the second end of the block 31 is clear of the open slot 12 and the anchor machine begins to retract until the chain is fully retracted. Then, the knife control cylinder 32 pushes the knife block 31 so that the second end of the knife block 31 returns to the open groove 12. Then, the driving motor 52 is controlled to operate so that the dead bolt 51 is inserted into the bolt hole 34, ensuring that the block knife 31 is not loosened.

If the knife block 31 is worn, the first pushing cylinder 42 and the second pushing cylinder 43 can be controlled to push the knife block 31 to move toward the direction of the rotating shaft 22 to compensate the size of the worn on the side surface of the knife block 31, so that the chain stopper can firmly lock the anchor chain.

Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present disclosure.

Claims

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

a support (1);

the roller assembly comprises a roller (21) and a rotating shaft (22), two ends of the rotating shaft (22) are fixedly inserted in the bracket (1), and the roller (21) is movably sleeved on the rotating shaft (22);

a knife assembly comprising: the switch knife block (31) and the switch knife control piece, wherein the first end of the switch knife block (31) is rotatably installed on the support (1), the rotation central axis of the switch knife block (31) is perpendicular to the rotating shaft (22), the switch knife block (31) and the rotating shaft (22) are distributed at intervals in the axial direction of the rotation central axis of the switch knife block (31), and the switch knife control piece is positioned on the support (1) and is used for controlling the switch knife block (31) to rotate;

locking subassembly (4), be located on support (1), locking subassembly (4) are used for the drive brake blade piece (31) are followed the axial slip of the axis of rotation of brake blade piece (31), locking subassembly (4) include: the brake device comprises a pushing shaft (41) and a locking control piece, wherein the pushing shaft (41) is installed on a support (1) and can slide along the axial direction of the pushing shaft (41), the locking control piece is used for driving the pushing shaft (41) to slide along the axial direction of the pushing shaft (41), a first end of a knife switch block (31) is movably sleeved on the pushing shaft (41), the knife switch block (31) is axially fixed with the pushing shaft (41), the locking control piece comprises a first pushing oil cylinder (42), the first pushing oil cylinder (42) is located on the support (1), a piston rod of the first pushing oil cylinder (42) is connected with one end of the pushing shaft (41), and the pushing shaft (41) can rotate relative to the piston rod of the first pushing oil cylinder (42),

the end of the pushing shaft (41) and the end of the piston rod of the first pushing oil cylinder (42) are provided with outer flanges (44), two outer flanges (44) are butted, two outer flanges (44) are connected through a connecting ring (45), the connecting ring (45) is provided with a circular groove, the circular groove is used for accommodating two outer flanges (44), and the two outer flanges (44) are rotatably arranged in the circular groove.

2. A chain stopper according to claim 1 wherein the lockout control member further comprises a second push cylinder (43), the second push cylinder (43) being located on the bracket (1), the second push cylinder (43) being adapted to push the knife block (31) to slide axially along the push shaft (41) at the second end of the knife block (31).

3. A chain stopper according to claim 1 wherein the knife control member comprises a knife control cylinder (32), the bore of the knife control cylinder (32) being ball-hinged to the bracket (1), the piston rod of the knife control cylinder (32) being hinged to the first end of the knife block (31).

4. The chain stopper of any one of claims 1 to 3, further comprising a latch assembly, the latch assembly comprising: the lock catch comprises a locking bolt (51) and a bolt control mechanism, wherein a bolt hole (34) for inserting the locking bolt (51) is formed in the second end of the knife switch block (31), the axial direction of the bolt hole (34) is perpendicular to the rotating shaft (22), the bolt control mechanism is located on the support (1), and the bolt control mechanism is used for controlling the locking bolt (51) to be inserted into the bolt hole (34) when the knife switch block (31) rotates to the bolt hole (34) and the locking bolt (51) are coaxial.

5. The chain stopper as claimed in claim 4, wherein said latch control mechanism comprises: the locking mechanism comprises a driving motor (52), a driving gear (53) and a driving rack (54), wherein an output shaft of the driving motor (52) is in transmission connection with the driving gear (53), the driving rack (54) is meshed with the driving gear (53), and one end of the driving rack (54) is connected with one end of the locking bolt (51).

6. The chain stopper of claim 5, wherein the latch control mechanism further comprises: the position sensor (56) and the driving motor (52) are electrically connected with the controller, the position sensor (56) is used for detecting knife switch position information, the knife switch position information is used for reflecting whether the bolt hole (34) is coaxial with the locking bolt (51), and the controller is used for controlling the driving motor (52) to work based on the knife switch position information.

7. The chain stopper of claim 5, wherein the latch control mechanism further comprises a mounting plate (55), the mounting plate (55) is located on the bracket (1), the driving motor (52) is located on the mounting plate (55), a guide groove (57) is formed in the plate surface of the mounting plate (55), and the driving rack (54) is slidably disposed in the guide groove (57).

8. A chain stopper according to any one of claims 1 to 3 characterized in that said roller assembly further comprises a bushing (23), an inner wall surface of said bushing (23) is provided with an annular lubrication groove (24), said bushing (23) is sleeved outside said rotary shaft (22), said roller (21) is sleeved outside said bushing (23),

be equipped with lubricating oil duct (25) in pivot (22), the one end of lubricating oil duct (25) is located the tip of pivot (22), the other end of lubricating oil duct (25) is located on the outer wall of pivot (22), just the other end of lubricating oil duct (25) with annular lubrication groove (24) intercommunication.