Chain lifting device structure for ship anchor chain and ship

Abstract

The chain lifting device structure comprises a chain lifting device body (1), a knife switch (2), a balancing weight (6), a hydraulic oil cylinder (7) and a rolling wheel (9), the knife switch (2) is arranged at the top of the chain lifting device body (1) in the mode that one side of the knife switch (2) can be opened and closed, and an upper support of the hydraulic oil cylinder (7) is fixed to the position, close to a rotating shaft, of the knife switch (2). A lower support of the hydraulic oil cylinder (7) is fixed to one side of the chain lifting device body, the rotating end of the knife switch is arranged on one side of the top of the chain lifting device body through an opening and closing rotating shaft (11), the free end of the knife switch is fixed to the other side of the top of the chain lifting device body in an opening and closing mode, the middle of the knife switch (2) is pressed on the top of a rolling wheel (9), and a balancing weight (6) is arranged on the knife switch (2). Limiting devices are arranged on the two sides of the knife switch (2). According to the chain lifting device, opening and closing of the knife switch are achieved in two modes, the safety is improved by arranging a protection device, and personnel and equipment are effectively prevented from being damaged.

Description

Technical Field

[0001] The invention relates to ship construction, in particular to a chain lifter structure for fixing an anchor chain on a ship and the ship. Background Art

[0002] The chain stopper is a device that clamps the anchor chain when the ship is sailing or anchored. According to the classification society specifications, the chain stopper and its main load-bearing accessory, the blade, should be able to withstand 80% of the minimum breaking load of the anchor chain, and its load-bearing parts will not produce permanent deformation. Therefore, the chain stopper blade is its important component.

[0003] In the existing design, as the number of anchor outfittings on ships increases, the specifications of anchors and anchor chains on ships also increase. In order to meet the above-mentioned force requirements, the weight of the chain stopper blade increases, and hydraulic chain stoppers are therefore installed on ships in large quantities. During the use of the hydraulic chain stopper, when the chain stopper is in use and the hydraulic system fails, the blade will not be controlled by the hydraulic pressure and will fall to both ends, causing damage to the crew or equipment. Chinese invention patent 2020102208985.5 discloses a blade chain lifter, which is designed with an adjustment handle. The retractable handle saves effort when the blade is closed with the inlay groove, and can also be retracted to reduce the length and area, reducing the risk of contact. However, it is a manual operation as a whole. When the anchor outfittings are getting larger and larger, it is difficult to close it effectively if it is still manually operated, and the operation is difficult, and it is easy to be dangerous during operation and use. In order to successfully complete the closing and opening of the blade, a more reliable and durable chain lifter structure must be designed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new type of chain lifter structure for ship anchor chains. The chain lifter structure of the present invention should be able to automatically realize the opening and closing of the gate, and in the process of opening and closing the gate, attention should be paid to operation backup, forming multiple opening and closing modes, and paying attention to safety protection work.

[0005] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0006] A chain lifter structure for ship anchor chains, the chain lifter structure comprising a chain lifter body, a knife, a counterweight, a hydraulic cylinder and a roller, the roller being rotatably arranged at the middle of the chain lifter body, a groove being provided on the roller as a path for the anchor chain to travel, the knife being openable and closable on one side and arranged at the top of the chain lifter body, the hydraulic cylinder being further arranged on the chain lifter body, the hydraulic cylinder comprising an upper bracket and a lower bracket which move mutually under the action of hydraulic power, the upper bracket of the hydraulic cylinder being fixed on the The gate knife is located close to the rotating shaft to serve as the power source for the rotation of the gate knife. The lower bracket of the hydraulic cylinder is fixed on one side of the chain lifter body. The rotating end of the gate knife is fixed to one side of the top of the chain lifter body through an opening and closing rotating shaft. The free end of the gate knife can be fixed to the other side of the top of the chain lifter body in an opening and closing manner. The middle part of the gate knife is pressed on the top of the roller to lock the anchor chain. A back extension section is provided on the gate knife, and a counterweight block is provided at the end of the back extension section. Limiting devices are also provided on both sides of the gate knife to prevent hydraulic failure.

[0007] In a chain lifter structure for a ship anchor chain of the present invention, the limiting device includes a front limiting piece, a rear limiting piece and a limiting rod, the front limiting piece is fixed to one side end of the top of the chain lifter body and is located at the rear of the knife, the rear limiting piece is arranged on the top of the chain lifter body and is located in front of the knife, and the limiting rod is inserted into the rear limiting piece according to different working conditions.

[0008] In a chain lifter structure for a ship anchor chain of the present invention, further, the front stopper is a C-shaped component made of square steel, the two legs of the C-shaped component are arranged at the end of the top of the chain lifter body close to the opening and closing rotation axis, and the middle of the C-shaped component is close to the gate knife to form a back protection support for the gate knife. In order to further improve the support stability, a crossbar support is arranged in the middle of the C-shaped component.

[0009] In a chain lifter structure for a ship anchor chain of the present invention, further, the rear limiter includes two identical triangular support plates, which are correspondingly arranged on the top of the chain lifter body and symmetrically arranged on both sides of the gate, and circular holes are provided at the upper corner positions of the triangular support plates, and the limit rod is inserted into the circular hole of the triangular support plate to form a front protective support for the gate.

[0010] In a chain lifter structure for a ship anchor chain of the present invention, further, the limiting rod is composed of a round rod, a round ring, a handle and a tongue-shaped latch, the round ring is welded to one side of the round rod, the tongue-shaped latch is welded to the other side of the round rod through a small chain, a hole is opened at the front end of the round rod, and the tongue-shaped latch passes through the hole to achieve position locking.

[0011] In the chain lifter structure for ship anchor chains of the present invention, the counterweight block is a round disk-shaped metal block arranged at the end of the back-extending section.

[0012] In the chain lifter structure for ship anchor chain of the present invention, further, the weight of the counterweight block is one third to one half of the total weight of the gate knife. The counterweight block is provided to reduce the torque when manually holding the free end of the gate knife to rotate, thereby reducing the manpower input of construction personnel, and improving the convenience of manual rotation in the state of hydraulic damage and failure.

[0013] In a chain stopper structure for a ship anchor chain of the present invention, when the knife is in a closed state, the limit rod is installed in the circular hole of the rear limit piece to perform secondary limiting on the knife; when the knife is in an open state, the front limit piece is installed on the left side of the top of the chain stopper body to prevent the knife from falling to the left when the hydraulic pressure of the equipment fails, and the rear limit piece is installed on the right side of the chain stopper body, and the limit rod is installed on the rear limit piece to prevent the knife from falling to the right when the hydraulic pressure of the equipment fails.

[0014] In a chain stopper structure for a ship anchor chain of the present invention, further, when the gate knife is in a closed state, the middle part of the gate knife is pressed on the top of the roller to lock the anchor chain, and the free end of the gate knife covers one side of the chain stopper body and is fixed with a pin to form a primary limit.

[0015] Based on the above technical solution, the chain lifter structure for ship anchor chain of the present invention has achieved the following technical advantages through practical application:

[0016] 1. The present invention adopts a hydraulic chain lifter to realize the opening and closing operation of the chain lifter blade. The application of hydraulic oil cylinder replaces the operation of opening and closing the blade manually, thereby improving the automation level of the operation. In addition, in order to achieve safety protection, we set a blade anti-fall device at the blade. Through the application of front and rear limiters, it effectively prevents the blade from tipping to the front or rear end in the event of hydraulic failure, causing damage to personnel and equipment.

[0017] 2. In addition to introducing a hydraulic cylinder to realize automatic operation, the chain lifter structure of the present invention also reserves space for manual operation. In order to solve the problem that the gate knife is too large to be operated manually, a counterweight block is provided on the back of the gate knife. The counterweight block can reduce the force required for manual operation, making manual operation easier to achieve.

[0018] 3. In the hydraulic chain stopper blade anti-fall device of the present invention, the front limit member is installed on the left side of the hydraulic chain stopper, which effectively prevents the blade from falling to the left side when the hydraulic pressure of the equipment fails, thereby preventing damage to personnel and equipment; the rear limit member is installed on the right side of the hydraulic chain stopper, and the limit rod passes through the hole of the rear limit member, which effectively prevents the blade from falling to the right side when the hydraulic pressure of the equipment fails, thereby preventing damage to personnel and equipment and improving the safety protection level.

[0019] 4. The chain lifter structure of the present invention introduces two safety protections to realize the safety protection of the gate in the closed state. When the gate is in the closed state, the chain lifter constrains and limits the working state of the anchor chain. At this time, the gate must be able to be closed tightly. Therefore, the free end of the gate is locked with the chain lifter body by a pin after closing to complete the first safety protection. The secondary safety protection of the gate is realized by the combination of the rear limit member and the limit rod, so that multiple safety measures are taken to realize the state locking of the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic structural diagram of a chain lifter structure for a ship anchor chain in a use state.

[0021] Figure 2 The present invention is a schematic structural diagram of a chain lifter structure for a ship anchor chain in a non-use state.

[0022] Figure 3 The present invention is a schematic structural diagram of a front stopper in a chain lifter structure for a ship anchor chain.

[0023] Figure 4 The present invention is a schematic structural diagram of a rear stopper in a chain lifter structure for a ship anchor chain.

[0024] Among them, 1-chain lifter body 2-blade 3-front limiter 4-rear limiter 5-limiting rod 51-round bar 52-round ring 53-handle 54-tongue latch 6-counterweight 7-hydraulic cylinder 8-anchor chain 9-roller 10-backward extension section 11-opening and closing rotation axis DETAILED DESCRIPTION

[0025] Hereinafter, we will further elaborate on a chain lifter structure for a ship anchor chain of the present invention in combination with the accompanying drawings and specific embodiments, so as to more clearly understand its structural composition and working process, but this shall not limit the protection scope of the present invention.

[0026] like Figure 1 and Figure 2 As shown, the present invention is a chain lifter structure for ship anchor chains, which is a design of locking the anchor chain by means of a gate-type closure. The chain lifter uses both hydraulic and manual methods to achieve gate closure, and provides a solution for how to protect the gate position in the event of hydraulic failure.

[0027] The chain lifter structure of the present invention mainly includes a chain lifter body 1, a knife 2, a counterweight 6, a hydraulic cylinder 7 and a roller 9. The roller 9 is rotatably arranged in the middle of the chain lifter body 1, and a groove is arranged on the roller 9 as a running path of the anchor chain 8. The retraction and extension of the anchor chain 8 are realized by the roller 9, and the locking of the anchor chain 8 is realized by pressing the roller 9 by the knife 2.

[0028] The gate knife 2 can be set on the top of the chain lifter body 1 in an opening and closing manner on one side. The hydraulic cylinder 7 is also set on the chain lifter body 1. The hydraulic cylinder 7 includes an upper bracket and a lower bracket that move relative to each other under the action of hydraulic power. The upper bracket of the hydraulic cylinder 7 is fixed to the gate knife 2 near the rotating shaft to serve as the power source for the rotation of the gate knife 2. The lower bracket of the hydraulic cylinder 7 is fixed to one side of the chain lifter body 1. The rotating end of the gate knife 2 is fixed to one side of the top of the chain lifter body 1 through an opening and closing rotating shaft 11. The free end of the gate knife 2 can be fixed to the other side of the top of the chain lifter body 1 in an opening and closing manner. The middle part of the gate knife 2 is pressed on the top of the roller 9 to lock the anchor chain 8. A back extension section 10 is provided on the gate knife 2, and a counterweight block 6 is provided at the end of the back extension section 10.

[0029] The present invention adopts a hydraulic chain lifter to realize the opening and closing operation of the chain lifter blade. The use of a hydraulic cylinder replaces the manual operation of opening and closing the blade, thereby improving the automation level of the operation. In addition, in order to achieve safety protection, we set a blade anti-fall device at the blade. Through the use of front and rear limit members, it can effectively prevent the blade from tipping over to the front or rear end in the event of hydraulic failure, causing damage to personnel and equipment. In addition to introducing a hydraulic cylinder to realize automatic operation, the chain lifter structure of the present invention also reserves space for manual operation. In order to solve the problem that the blade is too large to be manually operated, a counterweight block is set on the back of the blade. The counterweight block can reduce the force required for manual operation, making manual operation easier to achieve.

[0030] As the number of anchors installed on ships increases, the specifications of anchors and anchor chains of ships also increase. In order to meet the above-mentioned force requirements, the weight of the chain stopper blade increases. In order to smoothly complete the closing and opening of the blade, hydraulic chain stoppers are installed and used on ships in large quantities. During the use of the hydraulic chain stopper, when the chain stopper is in use, when the hydraulic system fails, the blade will not be controlled by the hydraulic pressure and will fall to both ends, causing damage to the crew or equipment. Limiting devices are also provided on both sides of the blade 2 to prevent hydraulic failure.

[0031] The above-mentioned limiting device includes a front limiting member 3, a rear limiting member 4 and a limiting rod 5. The front limiting member 3 is fixed to one side end of the top of the chain lifter body 1 and is located at the rear of the gate knife 2. The rear limiting member 4 is arranged at the top of the chain lifter body 1 and is located in front of the gate knife 2. The limiting rod 5 is inserted into the rear limiting member 4 according to different working conditions.

[0032] Furthermore, if Figure 3 As shown, the front stopper 3 is a C-shaped component made of square steel, the two legs of which are mounted on the ends of the top of the chain lifter body 1 near the opening and closing rotation axis 11, and the middle of the C-shaped component is close to the gate knife 2 to form a back protection support for the gate knife 2. In order to further improve the support stability, a crossbar support is provided in the middle of the C-shaped component.

[0033] like Figure 4 As shown, the rear limiter 4 includes two identical triangular support plates, which are cut from two steel plates with circular holes. The triangular support plates are correspondingly arranged on the top of the chain lifter body 1 and symmetrically arranged on both sides of the gate knife 2. A circular hole is provided at the upper corner of the triangular support plate. The limiter rod 5 is inserted into the circular hole of the triangular support plate to form a front protective support for the gate knife 2. The limiter rod 5 is composed of a round rod 51, a circular ring 52, a handle 53 and a tongue-shaped latch 54. The circular ring 52 is welded to one side of the round rod 51, and the tongue-shaped latch 54 is welded to the other side of the round rod 51 through a small chain. A hole is provided at the front end of the round rod 51, and the tongue-shaped latch 54 passes through the hole to achieve position locking.

[0034] When the knife gate 2 is in a closed state, the limit rod 5 is installed in the circular hole of the rear limit piece 4 to perform secondary limiting on the knife gate 2; when the knife gate 2 is in an open state, the front limit piece 3 is installed on the left side of the top of the chain stopper body 1 to prevent the knife gate 2 from falling to the left when the hydraulic pressure of the equipment fails, and the rear limit piece 4 is installed on the right side of the chain stopper body 1, and the limit rod 5 is installed on the rear limit piece 4 to prevent the knife gate 2 from falling to the right when the hydraulic pressure of the equipment fails.

[0035] When the gate knife 2 is in a closed state, the middle part of the gate knife 2 is pressed on the top of the roller 9 to lock the anchor chain 8, and the free end of the gate knife 2 covers one side of the chain stopper body 1 and is fixed by a pin to form a primary limit.

[0036] As a backup, when the hydraulic operation of the gate knife fails to open and close, the gate knife 2 needs to be opened and closed manually. Considering the laborious problem of manual operation, a counterweight block 6 is set on the back of the gate knife 2. The purpose of the counterweight block 6 is to change its torque so that the free end can be operated more labor-saving. Specifically, the counterweight block 6 is a round pancake-shaped metal block set at the end of the back extension section 10. The weight of the counterweight block 6 is one third to one half of the total weight of the gate knife 2.

[0037] In the hydraulic chain stopper blade anti-fall device of the present invention, the front limiter is installed on the left side of the hydraulic chain stopper, which effectively prevents the blade from falling to the left when the hydraulic pressure of the equipment fails, thereby preventing damage to personnel and equipment; the rear limiter is installed on the right side of the hydraulic chain stopper, and the limit rod passes through the hole of the rear limiter, which effectively prevents the blade from falling to the right when the hydraulic pressure of the equipment fails, thereby preventing damage to personnel and equipment, and improving the safety protection level. The chain lifter structure of the present invention introduces two safety protections to achieve the safety protection of the blade in the closed state. The closed state of the blade is the working state of the chain lifter to constrain and limit the anchor chain. At this time, the blade must be able to be closed tightly, so the free end of the blade is locked with the chain lifter body by a pin after closing to complete the first safety protection, and the combination of the rear limiter and the limit rod is used to achieve the secondary safety protection of the blade, so that multiple safety measures are taken to achieve the state locking of the blade.

[0038] The invention relates to a hydraulic chain stopper blade anti-falling device. The hydraulic chain stopper controls the opening and closing of the blade by hydraulic pressure, thereby achieving the purpose of locking and releasing the anchor chain.

[0039] 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, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A chain lifter structure for a ship anchor chain, characterized in that: The chain lifter structure comprises a chain lifter body (1), a gate knife (2), a counterweight (6), a hydraulic cylinder (7) and a roller (9), wherein the roller (9) is rotatably arranged at the middle of the chain lifter body (1), and a groove serving as a running path for the anchor chain (8) is arranged on the roller (9), the gate knife (2) can be arranged at the top of the chain lifter body (1) in a way that it can be opened and closed on one side, and the hydraulic cylinder (7) is also arranged on the chain lifter body (1), and the hydraulic cylinder (7) comprises an upper bracket and a lower bracket that move relative to each other under the action of hydraulic power, and the upper bracket of the hydraulic cylinder (7) is fixed at a position close to the rotation axis of the gate knife (2). The gate knife (2) is used as a power source for rotating. The lower bracket of the hydraulic oil cylinder (7) is fixed on one side of the chain lifter body (1). The rotating end of the gate knife (2) is fixed on one side of the top of the chain lifter body (1) through an opening and closing rotating shaft (11). The free end of the gate knife (2) can be fixed on the other side of the top of the chain lifter body (1) in an opening and closing manner. The middle part of the gate knife (2) is pressed on the top of the roller (9) to lock the anchor chain (8). A back extension section (10) is provided on the gate knife (2). A counterweight block (6) is provided at the end of the back extension section (10). Limiting devices are also provided on both sides of the gate knife (2) to prevent hydraulic failure.

2. A chain lifter structure for a ship anchor chain according to claim 1, characterized in that: The limiting device comprises a front limiting member (3), a rear limiting member (4) and a limiting rod (5); the front limiting member (3) is fixed to one side end of the top of the chain lifter body (1) and is located at the rear of the gate knife (2); the rear limiting member (4) is arranged at the top of the chain lifter body (1) and is located in front of the gate knife (2); the limiting rod (5) is inserted into the rear limiting member (4) according to different working conditions.

3. A chain lifter structure for a ship anchor chain according to claim 2, characterized in that: The front limiter (3) is a C-shaped component made of square steel. The two legs of the C-shaped component are mounted on the end of the top of the chain lifter body (1) close to the opening and closing rotation axis (11), and the middle part of the C-shaped component is close to the gate knife (2) to form a back protection support for the gate knife (2).

4. A chain lifter structure for a ship anchor chain according to claim 2, characterized in that: The rear limit member (4) comprises two identical triangular support plates, which are correspondingly arranged on the top of the chain lifter body (1) and symmetrically arranged on both sides of the gate knife (2). A circular hole is provided at the upper corner position of the triangular support plate, and the limit rod (5) is inserted into the circular hole of the triangular support plate to form a front protective support for the gate knife (2).

5. A chain lifter structure for a ship anchor chain according to claim 4, characterized in that: The limiting rod (5) is composed of a round rod (51), a round ring (52), a handle (53) and a tongue-shaped latch (54); the round ring (52) is welded to one side of the round rod (51); the tongue-shaped latch (54) is welded to the other side of the round rod (51) via a small chain; a hole is provided at the front end of the round rod (51); the tongue-shaped latch (54) passes through the hole to achieve position locking.

6. A chain lifter structure for a ship anchor chain according to claim 1, characterized in that: The counterweight block (6) is a round disk-shaped metal block arranged at the end of the backward extending section (10).

7. A chain lifter structure for a ship anchor chain according to claim 6, characterized in that: The weight of the counterweight block (6) is one third to one half of the total weight of the blade (2).

8. A chain lifter structure for a ship anchor chain according to claim 1, characterized in that: When the gate knife (2) is in a closed state, the limit rod (5) is installed in the circular hole of the rear limit member (4) to perform secondary limiting on the gate knife (2); when the gate knife (2) is in an open state, the front limit member (3) is installed on the left side of the top of the chain stopper body (1) to prevent the gate knife (2) from falling to the left when the hydraulic pressure of the equipment fails, and the rear limit member (4) is installed on the right side of the chain stopper body (1), and the limit rod (5) is installed on the rear limit member (4) to prevent the gate knife (2) from falling to the right when the hydraulic pressure of the equipment fails.

9. A chain lifter structure for a ship anchor chain according to claim 8, characterized in that: When the gate knife (2) is in a closed state, the middle part of the gate knife (2) is pressed on the top of the roller (9) to lock the anchor chain (8), and the free end of the gate knife (2) covers one side of the chain stopper body (1) and is fixed by a pin to form a primary limit.

10. A ship, characterized in that: The ship is provided with an anchor chain and also includes a chain lifter structure as claimed in any one of claims 1 to 9.

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