Seat type chain controller, dismantling method and anchor chain lowering stopping method

Abstract

The invention relates to the technical field of marine equipment, in particular to a seat type chain controller which comprises a base, a first chain control block and a second chain control block, the base is perpendicularly fixed to an anchor gear deck of an exploration platform, the bottom of the base penetrates out of the anchor gear deck, a positioning hole for an anchor chain to pass through is axially formed in the base, and a top opening of the base is of a countersink structure; a plurality of lifting lugs are arranged at the top of the first chain control block and the top of the second chain control block, the first chain control block and the second chain control block are detachably connected and define a containing space allowing a single middle chain ring on an anchor chain to axially penetrate through, and the first chain control block and the second chain control block serve as a whole and are placed in the top opening of the base with the bottom facing downwards. The seat type chain controller can effectively work on an exploration platform.

Description

Technical Field

[0001] The present invention relates to the technical field of marine equipment, and in particular to a seat-type chain stopper, a method for removing the seat-type chain stopper, and a method for stopping anchor chain lowering using the seat-type chain stopper. Background Art

[0002] Chain stoppers are also called chain stoppers or anchor chain stoppers. They are used to stop or clamp anchor chains. Common types include spiral chain stoppers, knife chain stoppers, tongue chain stoppers, cam chain stoppers, chain chain stoppers, and roller knife chain stoppers. Chain stoppers are usually installed on the deck between the anchor windlass and the anchor chain barrel. After dropping anchor, the tension of the anchor chain can be transmitted to the hull through the chain stopper on the gate, so that the anchor windlass is not under stress. When sailing, the chain stopper bears the gravity of the anchor and part of the anchor chain, and makes the anchor received in the anchor chain barrel close to the hull without collision.

[0003] However, when the conventional chain stopper is used on an exploration platform, it may get stuck in some cases, which requires time to adjust the chain stopper. After the adjustment, the jam will occur again in a short time, making the chain stopper unable to work effectively. Without changing the main structure of the conventional chain stopper, the chain stopper is often unable to meet the use requirements after multiple modifications and tests. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a seat-type chain stopper that can effectively work on an exploration platform.

[0005] The present invention adopts the following technical solution:

[0006] The present invention provides a seat-type chain stopper, comprising a base, a first chain stopper block and a second chain stopper block. The base is vertically fixed on the anchor machine deck of the exploration platform, and the bottom of the base passes through the anchor machine deck. A positioning hole for the anchor chain to pass through is axially opened on the base. The top opening of the base is a countersunk structure. The first chain stopper block and the second chain stopper block are both provided with a plurality of lifting ears at the top. The first chain stopper block and the second chain stopper block are detachably connected and enclose an accommodating space for a single middle chain link on the anchor chain to pass axially. The first chain stopper block and the second chain stopper block are placed as a whole with their bottoms downward in the top opening of the base.

[0007] Preferably, the base comprises a support and a chain barrel, the support is vertically embedded in the anchor deck, the bottom of the support is axially connected to the chain barrel, and the chain barrel is located below the anchor deck.

[0008] Preferably, the first chain stopper block and the second chain stopper block are both semi-disc structures, and the side surfaces of the first chain stopper block and the second chain stopper block are both provided with contoured grooves matching the outer contour of the middle link of the anchor chain, and the two contoured grooves together enclose an accommodating space.

[0009] Preferably, a plurality of connecting plates are arranged at intervals along a straight line on the top surface of the first chain brake block and the top surface of the second chain brake block, the connecting plates on the first chain brake block are coaxially arranged one-to-one with the connecting plates on the second chain brake block, and the connecting plates on the first chain brake block are threadedly connected one-to-one with the connecting plates on the second chain brake block.

[0010] Preferably, a positioning pin is fixed at a position of the first chain-stopping block close to the contoured groove, and a positioning groove is correspondingly provided at a position of the second chain-stopping block close to the contoured groove, and the positioning pin is clamped in the positioning groove.

[0011] Preferably, a plurality of pry bar insertion holes are circumferentially spaced apart on the annular outer circumferential surface of the first chain-brake block and the annular outer circumferential surface of the second chain-brake block.

[0012] Preferably, the support is made of ZG35CrMo after quenching and tempering.

[0013] Preferably, the first chain stopper block and the second chain stopper block are both made of 42CrMo after tempering treatment.

[0014] The present invention also provides a method for stopping the lowering of an anchor chain, which adopts the seat-type chain stopper mentioned above and comprises the following steps:

[0015] S1: Connect the first and second stopper chain blocks to the rigging below the auxiliary winch through the lifting lugs, lift the first and second stopper chain blocks to the clamping position of the anchor chain, and keep the first and second stopper chain blocks at the same height;

[0016] S2: inserting the first chain stopper block and the second chain stopper block into the anchor chain so that an intermediate chain link on the anchor chain is accommodated in the accommodation space, and detachably connecting the first chain stopper block and the second chain stopper block;

[0017] S3: lowering the rigging by the auxiliary winch until the bottom of the first stopper chain block and the bottom of the second stopper chain block are in contact with the anchor chain, removing the rigging from the lifting eye and returning the rigging;

[0018] S4: Start the anchor windlass, so that the first and second stopper chain blocks are lowered into the top opening of the base along with the anchor chain, and keep the anchor chain in contact with the first and second stopper chain blocks at the same time.

[0019] The present invention also provides a method for removing the seat type chain stopper, comprising the following steps:

[0020] Step 1: Start the anchor windlass to lift the anchor chain upward until the integrated connection structure consisting of the first chain stopper block and the second chain stopper block is pulled out from the top opening of the base;

[0021] Step 2: Lower the rigging under the auxiliary winch, connect the first stopper chain block and the second stopper chain block to the rigging through the lifting lugs and lift them until the first stopper chain block and the second stopper chain block are both axially spaced from the anchor chain;

[0022] Step 3: Release the detachable connection between the first stopper block and the second stopper block, and lower the rigging until both the first stopper block and the second stopper block fall onto the anchor winch deck;

[0023] Step 4: Release the connection between the rigging and the lifting lugs and return the rigging using the auxiliary winch.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The seat-type chain stopper of the present invention can stop the lowering of the anchor chain by clamping the first chain stopper block and the second chain stopper block into the anchor chain, making the first chain stopper block and the second chain stopper block detachably connected, and then placing them into the top opening of the base; and when the anchor chain needs to be lifted, since the first chain stopper block and the second chain stopper block are not connected to the base, they will not get stuck, thereby ensuring the effective operation of the seat-type chain stopper on the exploration platform.

[0026] At the same time, the seat-type chain stopper mentioned above is used to stop the lowering of the anchor chain, and the upper middle link of the anchor chain can be limited by the first chain stopper block and the second chain stopper block, and the first chain stopper block and the second chain stopper block are placed in the top opening of the base, and the base is fixed on the anchor machine deck of the exploration platform, thereby ensuring the limiting stability of the upper middle link of the anchor chain by the first chain stopper block and the second chain stopper block, and effectively preventing the lowering of the anchor chain.

[0027] In addition, when the seat-type chain stopper of the present invention is removed, it can be removed simply and conveniently by positioning the anchor windlass and the auxiliary winch prepared by the user in combination with the lifting lugs on the seat-type chain stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic cross-sectional view of the seat type chain brake in an embodiment of the present invention.

[0029] Figure 2 1 is a schematic diagram of a top view of the seat type chain brake in an embodiment of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the upper base of the seat-type chain brake in an embodiment of the present invention.

[0031] Figure 4 Schematic diagram of the structure of the first chain brake block in an embodiment of the present invention.

[0032] Figure 5 Schematic diagram of the structure of the second chain brake block in an embodiment of the present invention.

[0033] Figure 6 1 is a schematic diagram of a first state of a seat-type chain brake in an embodiment of the present invention.

[0034] Figure 7 2 is a schematic diagram of a second state of a seat-type chain brake in an embodiment of the present invention.

[0035] Figure 8 Schematic diagram of the third state of the seat type chain brake in an embodiment of the present invention.

[0036] The reference numerals are described as follows:

[0037] 1. Base 10. Connecting plate

[0038] 2. First chain-stop block 11, pry bar insertion hole

[0039] 3. Second chain block 12, pry bar

[0040] 4. Anchor deck 13. Auxiliary winch

[0041] 5. Anchor chain 14. Rigging

[0042] 6. Positioning hole 101, support

[0043] 7. Lifting lug 102, anchor chain tube

[0044] 8. Reinforcement rib 201, positioning pin

[0045] 9. Profiling groove 301, positioning groove DETAILED DESCRIPTION

[0046] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0050] See also Figure 1 and Figure 2 The present embodiment provides a seat-type chain stopper, including a base 1, a first chain stopper block 2 and a second chain stopper block 3. The base 1 is vertically fixed on the anchor machine deck 4 of the exploration platform, and the bottom of the base 1 passes through the anchor machine deck 4. A positioning hole 6 for the anchor chain 5 to pass through is axially opened on the base 1. The top opening of the base 1 is a countersunk structure. The first chain stopper block 2 and the second chain stopper block 3 are both provided with a plurality of lifting ears 7 on the top. The first chain stopper block 2 and the second chain stopper block 3 are detachably connected and enclose a receiving space for a single intermediate chain link on the anchor chain 5 to pass axially. The first chain stopper block 2 and the second chain stopper block 3 are placed as a whole with their bottoms facing downward in the top opening of the base 1.

[0051] The seat-type chain stopper of the present embodiment can stop the lowering of the anchor chain 5 by clamping the first chain stopper block 2 and the second chain stopper block 3 into the anchor chain 5, making the first chain stopper block 2 and the second chain stopper block 3 detachably connected, and then placing them into the top opening of the base 1; and when the anchor chain 5 needs to be lifted, since the first chain stopper block 2 and the second chain stopper block 3 are not connected to the base 1, they will not get stuck, thereby ensuring the effective operation of the seat-type chain stopper on the exploration platform.

[0052] It should be noted that when the base 1 is installed on site, the bearing capacity of the anchor winch deck 4 needs to be considered, the structure needs to be strengthened, and the requirements of the classification society need to be met.

[0053] Preferably, see Figure 3 The base 1 includes a support 101 and a chain barrel 102 . The support 101 is vertically embedded in the anchor deck 4 . The bottom of the support 101 is axially connected to the chain barrel 102 . The chain barrel 102 is located below the anchor deck 4 .

[0054] It should be noted that the support 101 is embedded in the anchor deck 4 of the exploration platform after a hole is opened in the original anchor chain barrel chain outlet position.

[0055] Preferably, see Figure 1 and Figure 3In this embodiment, the support 101 is welded and fixed to the anchor deck 4 and the reinforcing rib 8 below the anchor deck 4 at the same time.

[0056] Preferably, see Figure 4 and Figure 5 The first chain stopper block 2 and the second chain stopper block 3 are both semi-disc-shaped structures. The side surfaces of the first chain stopper block 2 and the second chain stopper block 3 are provided with contoured grooves 9 that match the outer contour of the middle link of the anchor chain 5. The two contoured grooves 9 together enclose an accommodating space.

[0057] It should be noted that after the two contoured grooves 9 jointly enclose an accommodating space, the first chain-detent block 2 and the second chain-detent block 3 form a complete disc structure.

[0058] Preferably, see Figure 1 and Figure 2 A plurality of connecting plates 10 are arranged at intervals along a straight line on the top surface of the first chain brake block 2 and the top surface of the second chain brake block 3. The connecting plates 10 on the first chain brake block 2 and the connecting plates 10 on the second chain brake block 3 are coaxially arranged one by one, and the connecting plates 10 on the first chain brake block 2 and the connecting plates 10 on the second chain brake block 3 are threadedly connected one by one.

[0059] The detachable connection between the first brake chain block 2 and the second brake chain block 3 is achieved through the threaded connection of the connecting plate 10. In order to facilitate the insertion of the threaded connector, the first brake chain block 2 and the second brake chain block 3 should be kept at the same height as much as possible when they are hoisted through the lifting ear 7. In order to ensure the intact formation of the accommodating space, the connecting plate 10 on the first brake chain block 2 and the connecting plate 10 on the second brake chain block 3 should be tightened one by one to ensure the tight fit between the first brake chain block 2 and the second brake chain block 3.

[0060] Preferably, see Figure 4 and Figure 5 A positioning pin 201 is fixed at a position of the first chain stopper block 2 near the profiling groove 9, and a positioning groove 301 is correspondingly provided at a position of the second chain stopper block 3 near the profiling groove 9, and the positioning pin 201 is clamped in the positioning groove 301. The arrangement of the positioning pin 201 and the positioning groove 301 enables the first chain stopper block 2 and the second chain stopper block 3 to be quickly aligned in position, which is beneficial to improving the efficiency of the detachable connection of the first chain stopper block 2 and the second chain stopper block 3.

[0061] Preferably, see Figure 2 A plurality of pry bar insertion holes 11 are circumferentially spaced apart on the annular outer circumference of the first brake chain block 2 and the annular outer circumference of the second brake chain block 3. When the first brake chain block 2 and the second brake chain block 3 in a suspended state are connected, the pry bar 12 can be inserted into the pry bar insertion hole 11, and the pry bar 12 can assist in achieving the connection between the first brake chain block 2 and the second brake chain block 3, thereby accelerating the efficiency of the detachable connection between the first brake chain block 2 and the second brake chain block 3.

[0062] Preferably, the support 101 is made of ZG35CrMo after quenching and tempering.

[0063] Specifically, in the present embodiment, the chemical components of ZG35CrMo used in the support 101 are as follows: C: 0.30-0.37; Si: 0.30-0.50; Mn: 0.50-0.80; P: 0.035; S: 0.035; Cr: 0.80-1.20; Ni: 1.30-1.70; Mo: 0.20-0.30.

[0064] Preferably, the first and second stopper blocks 2 and 3 are made of 42CrMo after quenching and tempering. The material selection and hardness of the first and second stopper blocks 2 and 3 should be based on the premise of not damaging the anchor chain 5 and having the ability to maintain the original shape after being stressed, and 42CrMo can meet the above material and hardness requirements after quenching and tempering.

[0065] Specifically, in the present embodiment, the proportions of the chemical components in the 42CrMo used in the first brake block 2 and the second brake block 3 are: C: 0.38-0.40; Si: 0.17-0.37; Mn: 0.50-0.80; Cr: 0.90-1.20; Mo: 0.15-0.25.

[0066] This embodiment also provides a method for stopping the lowering of an anchor chain, using the seat type chain stopper mentioned above, and comprising the following steps: Figures 6 to 8 :

[0067] S1: Connect the first and second stopper chain blocks 2 and 3 to the rigging 14 below the auxiliary winch 13 through the lifting lugs 7, lift the first and second stopper chain blocks 2 and 3 to the snap-in position of the anchor chain 5, and keep the first and second stopper chain blocks 2 and 3 at the same height;

[0068] S2: insert the first chain stopper block 2 and the second chain stopper block 3 into the anchor chain 5 so that an intermediate chain link on the anchor chain 5 is accommodated in the accommodation space, and the first chain stopper block 2 and the second chain stopper block 3 are detachably connected;

[0069] S3: lowering the rigging 14 by the auxiliary winch 13 until the bottom of the first stopper chain block 2 and the bottom of the second stopper chain block 3 are both in contact with the anchor chain 5, removing the rigging 14 from the lifting eye 7 and returning the rigging 14;

[0070] S4: Start the anchor windlass, so that the first and second stopper chain blocks 2 and 3 are lowered into the top opening of the base 1 along with the anchor chain 5, and the anchor chain 5 is kept in contact with the first and second stopper chain blocks 2 and 3 at the same time.

[0071] When the above-mentioned seat-type chain stopper is used to stop the lowering of the anchor chain 5, the upper middle link of the anchor chain 5 can be limited by the first chain stopper block 2 and the second chain stopper block 3, and the first chain stopper block 2 and the second chain stopper block 3 are placed in the top opening of the base 1, and the base 1 is fixed on the anchor machine deck 4 of the exploration platform, thereby ensuring the limiting stability of the upper middle link of the anchor chain 5 by the first chain stopper block 2 and the second chain stopper block 3, and effectively preventing the anchor chain 5 from being lowered.

[0072] This embodiment also provides a method for removing the seat type chain stopper, comprising the following steps:

[0073] Step 1: Start the anchor windlass to lift the anchor chain 5 upward until the integrated connection structure consisting of the first chain stopper block 2 and the second chain stopper block 3 is pulled out from the top opening of the base 1;

[0074] Step 2: lower the rigging 14 below the auxiliary winch 13, connect the first and second bridle block 2 and 3 to the rigging 14 through the lifting lugs 7, and lift them until the first and second bridle block 2 and 3 are spaced apart from the anchor chain 5 in the axial direction;

[0075] Step 3: Release the detachable connection between the first stopper block 2 and the second stopper block 3, and lower the rigging 14 until both the first stopper block 2 and the second stopper block 3 fall onto the windlass deck 4;

[0076] Step 4: Release the connection between the rigging 14 and the lifting lug 7 and return the rigging 14 by the auxiliary winch 13 .

[0077] When the seat type chain stopper of this embodiment is removed, it can be removed simply and conveniently by positioning the anchor windlass and the auxiliary winch 13 prepared by the user in combination with the lifting lug 7 on the seat type chain stopper.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A seat type chain stopper, characterized in that: The utility model comprises a base (1), a first chain stopper block (2) and a second chain stopper block (3), wherein the base (1) is vertically fixed on the anchor machine deck (4) of the exploration platform, and the bottom of the base (1) passes through the anchor machine deck (4), and a positioning hole (6) is axially opened on the base (1) for the anchor chain (5) to pass through, and the top opening of the base (1) is a countersunk structure, and the first chain stopper block (2) and the second chain stopper block (3) are both provided with a plurality of lifting ears (7) at the top, and the first chain stopper block (2) and the second chain stopper block (3) are detachably connected and enclose a receiving space for a single intermediate chain link on the anchor chain (5) to pass axially, and the first chain stopper block (2) and the second chain stopper block (3) are placed as a whole with the bottom downward in the top opening of the base (1).

2. The seat type chain stopper according to claim 1, characterized in that: The base (1) comprises a support (101) and a hawser barrel (102); the support (101) is vertically embedded in the anchor deck (4); the bottom of the support (101) is axially connected to the hawser barrel (102); and the hawser barrel (102) is located below the anchor deck (4).

3. The seat type chain stopper according to claim 1, characterized in that: The first chain stopper block (2) and the second chain stopper block (3) are both semi-disc-shaped structures, and the side surfaces of the first chain stopper block (2) and the second chain stopper block (3) are both provided with contoured grooves (9) matching the outer contour of the middle link of the anchor chain (5), and the two contoured grooves (9) together enclose the accommodating space.

4. The seat type chain stopper according to claim 3, characterized in that: A plurality of connecting plates (10) are arranged at intervals along a straight line on the top surface of the first chain brake block (2) and the top surface of the second chain brake block (3); the connecting plates (10) on the first chain brake block (2) and the connecting plates (10) on the second chain brake block (3) are coaxially arranged one-to-one, and the connecting plates (10) on the first chain brake block (2) and the connecting plates (10) on the second chain brake block (3) are threadedly connected one-to-one.

5. The seat type chain stopper according to claim 3, characterized in that: A positioning pin (201) is fixed at a position of the first chain-detent block (2) close to the profiling groove (9), and a positioning groove (301) is correspondingly provided at a position of the second chain-detent block (3) close to the profiling groove (9), and the positioning pin (201) is clamped in the positioning groove (301).

6. The seat type chain stopper according to claim 3, characterized in that: A plurality of pry bar insertion holes (11) are provided on the annular outer circumferential surface of the first chain stopper block (2) and the annular outer circumferential surface of the second chain stopper block (3) at intervals in an annular direction.

7. The seat type chain stopper according to claim 2, characterized in that: The support (101) is made of ZG35CrMo after quenching and tempering.

8. The seat type chain stopper according to claim 1, characterized in that: The first chain stopper block (2) and the second chain stopper block (3) are both made of 42CrMo after quenching and tempering.

9. A method for stopping anchor chain lowering, characterized in that: The seat type chain brake according to any one of claims 1 to 8 is used, and comprises the following steps: S1: Connecting the first stopper chain block (2) and the second stopper chain block (3) to the rigging (14) below the auxiliary winch (13) through the lifting lug (7), lifting the first stopper chain block (2) and the second stopper chain block (3) to the locking position of the anchor chain (5), and keeping the first stopper chain block (2) and the second stopper chain block (3) at the same height; S2: inserting the first chain stopper block (2) and the second chain stopper block (3) into the anchor chain (5), so that an intermediate chain link on the anchor chain (5) is accommodated in the accommodation space, and the first chain stopper block (2) and the second chain stopper block (3) are detachably connected; S3: lowering the rigging (14) by means of the auxiliary winch (13) until the bottom of the first stopper chain block (2) and the bottom of the second stopper chain block (3) are both in contact with the anchor chain (5), removing the rigging (14) from the lifting eye (7) and returning the rigging (14); S4: Start the anchor windlass, so that the first stopper chain block (2) and the second stopper chain block (3) are lowered into the top opening of the base (1) along with the anchor chain (5), and the anchor chain (5) is kept in contact with the first stopper chain block (2) and the second stopper chain block (3) at the same time.

10. The method for removing a seat type chain stopper according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Start the anchor windlass to lift the anchor chain (5) upwards until the integrated connection structure consisting of the first chain stopper block (2) and the second chain stopper block (3) is pulled out from the top opening of the base (1); Step 2: lower the rigging (14) below the auxiliary winch (13), connect the first stopper chain block (2) and the second stopper chain block (3) to the rigging (14) through the lifting lug (7), and lift them until the first stopper chain block (2) and the second stopper chain block (3) are both spaced apart from the anchor chain (5) in the axial direction; Step 3: releasing the detachable connection between the first stopper block (2) and the second stopper block (3), and lowering the rigging (14) until both the first stopper block (2) and the second stopper block (3) fall onto the anchor winch deck (4); Step 4: Release the connection between the rigging (14) and the lifting lug (7), and return the rigging (14) by the auxiliary winch (13).

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