CN211338540U - Crab pot couple of ability automatic unblock - Google Patents

Abstract

The utility model provides a crab pot couple of ability automatic unblock, including the pendant, the top of pendant is provided with the couple, be provided with the structure of unbuckling on the couple, the structure of unbuckling includes trip block and elastic mechanism, elastic mechanism includes the connector, lower connector and barrel spring, the pendant is buckled by the metal strip and forms, the couple is buckled by the metal strip upper end and forms, lower connector is connected in the metal strip and is buckled the lower part of controlling two vertical metal strips, it lies in the top of connector down and can slide from top to bottom to go up the connector, barrel spring is located between connector and the lower connector and lies in about and the metal strip middle part between two vertical metal strips leads to the chamber, barrel spring's upper end corresponds the bottom surface with last connector and is connected, and barrel spring's lower extreme corresponds the top surface with lower connector. The utility model has the advantages that: the pendant plays the guard action to cylindric spring, reduces the deformation that cylindric spring appears by external force impact striking.

Description

Crab pot couple of ability automatic unblock

Technical Field

The utility model relates to an equipment preparation technical field is catched to the ocean, especially indicates a crab pot couple of ability automatic unblock.

Background

The original Chinese patent application with the application number of CN201910747284.3 named as shrimp and crab cage hanger capable of automatically unbuckling discloses a shrimp and crab cage hanger capable of automatically unbuckling, which comprises a hanger, wherein the bottom of the hanger is provided with a connecting part connected with a hanging rope, the top of the hanger is provided with a hook, an unbuckling structure is arranged on the hook of the shrimp and crab cage hanger, the unbuckling structure comprises an unbuckling block and an elastic mechanism, the unbuckling block can axially rotate and is movably connected with a push rod, the lower end of the push rod is connected with the elastic mechanism, the elastic mechanism can return the tail end of the unbuckling block to a slide rod higher than the hook tip of the hook, and when the hanging rope is pulled by external force to automatically unbuckle, the elastic mechanism drives the tail end of the unbuckling block to slide downwards along the slide rod, and the hanging rope in the hook slides out of the hook to separate from the hook. The invention has the advantages of firm structure and long service life, can easily, easily and conveniently hang the shrimp and crab cages on the lifting ropes, can automatically drop the shrimp and crab cages hung on the lifting ropes from the main cable through the tripping bodies, and effectively reduces the labor intensity. However, the cylindrical spring of the elastic mechanism in the hanger is sleeved outside the metal elastic strip, lacks support or protection, and is easily deformed due to external impact and impact, and the service life of the hanger is affected, so the structure of the hanger needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that to above-mentioned prior art current situation and provide a design benefit, sound construction, the spring has protection architecture and non-deformable, long service life, can automatic unblock and automatic unblock convenient operation, efficient crab pot couple.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this can automatic crab pot couple of unblock, including the pendant, the bottom of pendant is provided with the connecting portion that can be connected with the string rope of crab pot, the top of pendant is provided with can hangs the couple of detaining mutually with the lifting rope still be provided with on the couple and can hang the automatic tripping device who drops off of lifting rope of detaining in the couple, tripping device includes tripping block and elastic mechanism, the front end of tripping block can be followed the couple hook tip and made axial rotation, and the tail end of tripping block is connected with push rod upper end activity, just the afterbody of tripping block can be followed the slide bar on the pendant and can reciprocate as spacing rail, elastic mechanism sets up on the pendant of couple below, the lower extreme of push rod is connected with elastic mechanism, its characterized in that: elastic mechanism includes connector, lower connector and barrel spring, the pendant is buckled by the metal strip and forms, the couple is buckled by the metal strip upper end and forms, lower connector is connected in the lower part of two vertical metal strips about the metal strip is buckled, the top that the connector is located down the connector just can wear to arrange in with sliding from top to bottom about the upper portion of two vertical metal strips, the barrel spring is located between connector and the lower connector and is located about the metal strip middle part between two vertical metal strips leads to the chamber, the upper end and the last connector of barrel spring correspond the bottom surface and are connected, and the lower extreme and the lower connector of barrel spring correspond the top surface and are connected.

As an improvement, the upper connecting body can be preferably a cylindrical body, the lower end of the push rod is movably connected with the top of the cylindrical body, a bottom surface cavity capable of extending into the upper end of the cylindrical spring is arranged on the bottom surface of the cylindrical body, and the top end of the cylindrical spring is connected with the bottom surface of the bottom surface cavity.

In a further improvement, the top end of the cylindrical spring can be welded or bonded with the bottom surface of the bottom surface cavity, and the bottom end of the cylindrical spring is welded or bonded with the corresponding top surface of the lower connecting body.

The improved structure of the push rod is characterized in that a waist-shaped groove can be preferably arranged on the top surface of the cylindrical body, a rotating shaft penetrating through the side wall of the waist-shaped groove is inserted into the side portion of the cylindrical body, the lower end of the push rod extends into the waist-shaped groove, a rotating sleeve is arranged at the lower end of the push rod, and the rotating sleeve can be rotatably sleeved on the rotating shaft.

As an improvement, the left and right vertical metal strips between the upper connecting body and the lower connecting body may preferably be folding bars having a large upper end distance and a small lower end distance from each other. The folding rod can limit the sliding distance of the upper connector to avoid crushing the spring, and the lower part of the folding rod plays a role in clamping the lower connector, so that the lower connector is fixed more firmly.

As an improvement, the hanging piece can be preferably formed by bending an elastic metal strip, and the hook is formed by bending the upper end of the elastic metal strip.

As an improvement, a sealing part which can automatically close the opening of the hook after the lifting rope enters the hook cavity of the hook can be preferably arranged at the hook.

The improved structure of the metal strip sealing device is characterized in that the sealing part comprises a movable sealing block and a top cylinder rod, wherein the fixed protrusion is arranged on the top surface of an upper connector, one end of a metal strip sequentially penetrates through the upper connector, the upper connector and the top surface of the top cylinder rod from bottom to top, the lower part of the movable sealing block is connected with the end part of the metal strip positioned above the top cylinder rod in a rotating mode, the top cylinder rod can move up and down along with the up and down movement of the upper connector, a torsion spring capable of keeping the movable sealing block to rotate outwards is arranged at the rotating position of the movable sealing block, an extending part is upwards arranged at the top of the top cylinder rod, and when the metal strip sealing device is in a no-external-force state, the extending part is tightly attached to the back of the movable sealing block through the torsion.

Further improvement, an arc-shaped notch which is convenient for the hanging rope to be clamped in can be preferably arranged on the movable sealing block.

As an improvement, the trip block can be preferably a groove movable plate with an opening at the top, the hook can be arranged in a groove above the trip block, the front part of the trip block is rotatably connected with the hook through a rotating shaft pin, the tail part of the trip block connects two groove side plates together through a rear shaft pin, the rear shaft pin is positioned in front of the sliding rod and below the bottom surface of the hook and is movably connected with the upper end of the push rod on the rear shaft pin positioned below the bottom surface of the hook, or the trip block has two trip blocks, the two trip blocks are symmetrically clamped on two side surfaces of the hook, the front part of the trip block is rotatably connected with the hook through the rotating shaft pin, the tail part of the trip block connects the two trip blocks together through the rear shaft pin, the rear shaft pin is positioned in front of the sliding rod and below the bottom surface of the hook, and the rear shaft pin is movably connected with the upper end of the push rod, the sliding rod is a metal strip of the shank section of the pendant, and the concave cavity at the tail of the trip block can be clamped on the metal strip of the shank section in a vertically sliding manner.

Compared with the prior art, the utility model has the advantages of: the elastic mechanism of the crab pot hook adopts the cylindrical spring to provide the restoring force of the trip block, the cylindrical spring is positioned between the upper connector and the lower connector and is positioned in the middle through cavity of the metal strip between the left vertical metal strip and the right vertical metal strip, the left vertical metal strip and the right vertical metal strip play a certain role in protecting the spring, the impact and the impact of external force on the spring are reduced, the deformation conditions of the spring such as sinking, eccentricity and fracture are delayed, and the service life of the spring is prolonged; the upper connector can be a cylindrical body, and a bottom surface concave cavity is arranged on the bottom surface of the cylindrical body, so that the cylindrical spring can be sleeved in the bottom surface concave cavity, namely, the cylindrical spring is sleeved with a protective sleeve respectively, and the service life of the cylindrical spring is further prolonged; the hanger is made of metal strips, so that the weight is light, the processing, carrying and installation are very convenient, the middle through cavity of the metal strip for installing the cylindrical spring is naturally formed after the metal strip is bent, secondary processing is not needed, the manufacturing cost is low, the corrosion resistance effect of the metal strip is good, and the hanger is suitable for fishing; the sealing part increases the sealing effect of the opening of the hook, and the lifting rope cannot easily fall out of the hook cavity of the hook after being sleeved in the hook cavity of the hook, so that the connecting effect of the lifting rope is improved, and the crab pot loss in the fishing process is reduced; the crab pot hook is ingenious in design, firm in structure and not easy to damage after long-term use, and can effectively prevent the loss of the catching crab pot by applying the crab pot hook, and the crab pot hook can easily, easily and conveniently hang the crab pot on the lifting rope (the lifting rope is fixedly connected on the main mooring rope) by virtue of the trip block, and can automatically drop the crab pot hung on the lifting rope from the main mooring rope by virtue of the trip block, so that the labor intensity is effectively reduced, the crab pot hook is very convenient to apply, and is safe and simple to operate, labor-saving and money-saving, and the efficiency of crab catching operation is greatly improved. The crab pot hook has the advantages of convenient and safe use and less operators, and the efficiency and the economic benefit of the shrimp and crab catching operation are greatly improved by adopting the crab pot hook.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a perspective view of the crab pot of FIG. 1 after being suspended;

FIG. 5 is an exploded view of the structure of FIG. 1;

FIG. 6 is an exploded view of the trip block of FIG. 1 in an alternate configuration;

FIG. 7 is a further exploded view of the undeployed portion of FIG. 6;

FIG. 8 is a further exploded view of the undeployed portion of FIG. 7;

FIG. 9 is a perspective view of FIG. 1 after the lifting rope has been looped in;

FIG. 10 is a perspective view of the upper connector of FIG. 9 pressed to pull the trip block to open the hook opening;

FIG. 11 is a perspective view of the lanyard of FIG. 10 fully disengaged from the hook;

FIG. 12 is a view showing an effect of the application of the ship for catching shrimps and crabs of FIG. 1;

FIG. 13 is an enlarged view of portion I of FIG. 12;

FIG. 14 is an enlarged view of section II of FIG. 13;

fig. 15 is a perspective view of the left and right rods of the metal strip of fig. 1 being straight rods.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 15, the crab pot hook capable of automatically unlocking according to this embodiment includes a hanging member 1, a connecting portion 13 capable of being connected to a hanging rope 6 of a crab pot 7 is disposed at the bottom of the hanging member 1, a hook 11 capable of being hooked to a hanging rope 5 is disposed at the top of the hanging member 1, a tripping structure capable of automatically tripping the hanging rope 5 hooked in the hook 11 is further disposed on the hook 11, the tripping structure includes a tripping block 3 and an elastic mechanism 2, the front end of the tripping block 3 can axially rotate along the hook end portion of the hook 11, the tail end of the tripping block 3 is movably connected to the upper end of a push rod 20, the tail portion of the tripping block 3 can move up and down along a sliding rod 10 on the hanging member 1 as a limit rail, the elastic mechanism 2 is disposed on the hanging member 1 below the hook 11, the lower end of the push rod 20 is connected to the elastic mechanism 2, the elastic mechanism 2 includes an upper connecting body 21, a lower connecting body 23 and a cylindrical, the pendant 1 is formed by bending metal strips, the hook 11 is formed by bending the upper end of the metal strips, the lower connecting body 23 is connected in the lower part of two vertical metal strips on the left and right sides of the metal strip bent, the upper connecting body 21 is positioned above the lower connecting body 23 and can penetrate the upper parts of the two vertical metal strips on the left and right sides in a vertically sliding manner, the cylindrical spring 22 is positioned between the upper connecting body 21 and the lower connecting body 23 and positioned in the cavity 12 communicated with the middle part of the metal strip between the two vertical metal strips on the left and right sides, the upper end of the cylindrical spring 22 corresponds to the bottom surface with the upper connecting body 21 and is connected, and the lower end of the cylindrical spring 22 corresponds.

The upper connecting body 21 returns the tail end of the trip block 3 to the slide rod 10 higher than the height of the hook tip of the hook 11 without external force, when the lifting rope 5 is pulled by external force to automatically trip, the upper connecting body 21 drives the push rod 20 to move downwards when the clamping frame 8 is automatically clamped and the pulling force of the lifting rope 5 is greater than the return elastic force of the cylindrical spring 22, meanwhile, the push rod 20 pulls the trip block 3 to enable the tail end of the trip block 3 to slide downwards along the slide rod 10, and when the tail end of the trip block 3 is at the hook tip position of the hook 11 to enable the bottom edge 31 of the trip block 3 to form an angle of the sliding of the lifting rope 5, the lifting rope 5 in the hook 11 slides out of the hook 11 to be separated from the hook 11.

The upper connector 21 is a column, the lower end of the push rod 20 is movably connected with the top of the column, a bottom cavity 211 capable of extending into the upper end of the cylindrical spring 22 is arranged on the bottom surface of the column, and the top end of the cylindrical spring 22 is connected with the bottom surface of the bottom cavity 211. The top end of the cylindrical spring 22 is welded or bonded to the bottom surface of the bottom surface cavity 211, and the bottom end of the cylindrical spring 22 is welded or bonded to the corresponding top surface of the lower connecting body 23. A waist-shaped groove 212 is arranged on the top surface of the column body, a rotating shaft 213 penetrating through the side wall of the waist-shaped groove is inserted into the side part of the column body, the lower end of the push rod 20 extends into the waist-shaped groove 212, a rotating sleeve 201 is arranged at the lower end of the push rod 20, and the rotating sleeve 201 can be rotatably sleeved on the rotating shaft 213. The two left and right vertical metal strips between the upper connecting body 21 and the lower connecting body 23 are folding rods with a large upper end distance and a small lower end distance. The upper connecting body 21 may be a circular disk body, preferably a cylindrical body in this embodiment, and the cylindrical body may be a cylinder, so that the surface of the cylinder is smooth and not easy to scratch a user, and the top angle and the bottom angle of the cylinder are rounded corners.

The hanging piece 1 is formed by bending an elastic metal strip, and the hook 11 is formed by bending the upper end of the elastic metal strip. The connecting portion 13 of the metal strip is an arc-shaped portion which can reduce abrasion of the pull rope 6 of the crab pot 7. The arc part and the lower connector 23 enclose a connecting ring for connecting the pull rope 6.

The hook 11 is provided with a sealing part which can automatically close the opening of the hook after the lifting rope 5 enters the hook cavity of the hook. The sealing part comprises a movable sealing block 4, a top barrel rod 24 fixedly and convexly arranged on the top surface of an upper connecting body 21, one end of a metal strip sequentially penetrates through a lower connecting body 23 from bottom to top, the inner cavities of the upper connecting body 21 and the top barrel rod 24 extend out of the top surface of the top barrel rod, the lower part of the movable sealing block 4 is connected with the end part of the metal strip positioned above the top barrel rod 24 in a rotating mode, the top barrel rod 24 can move up and down along with the upper connecting body 21, a torsion spring 44 capable of keeping the movable sealing block 4 in an outward rotating trend is arranged at the rotating position of the movable sealing block 4, an extending part 25 is upwards arranged at the top of the top barrel rod 24, and when the external force state does not exist, the extending part 25 is closely attached to the back part of the movable sealing block 4 through the torsion force of the torsion spring. The movable sealing block 4 is provided with an arc-shaped notch 41 into which the lifting rope 5 can be conveniently clamped.

The trip block 3 is a groove movable plate with an opening at the top, the hook 11 can be arranged in a groove above the trip block 3, the front part of the trip block 3 is rotatably connected with the hook 11 through a rotating shaft pin 32, the tail part of the trip block 3 connects two groove side plates together through a rear shaft pin 33, the rear shaft pin 33 is positioned in front of the slide bar 10 and below the bottom surface of the hook 11, and is movably connected with the upper end of the push rod 20 on the rear shaft pin 33 positioned below the bottom surface of the hook 11, or the trip block 3 has two trip blocks, the two trip blocks 3 are symmetrically clamped on two side surfaces of the hook 11, the front part of the trip block 3 is rotatably connected with the hook 11 through the rotating shaft pin 32, the tail part of the trip block 3 connects the two trip blocks 3 together through the rear shaft pin 33, the rear shaft pin 33 is positioned in front of the slide bar 10 and below the bottom surface of the hook 11, the rear shaft pin 33 is movably connected with the upper, the sliding rod 10 is a metal strip of the shank section of the pendant 1, and the concave cavity at the tail part of the trip block 3 can be clamped on the metal strip of the shank section in a vertically sliding manner.

The lower connecting body can be a disk or a strip, the through holes 231 of the two metal strips on the lower connecting body are oblique through holes capable of buckling the lower connecting body 23 in the metal strips above the arc-shaped portion, and the distance between the center connecting lines of the two top surface holes on the top surface of the lower connecting body 23 of the two oblique through holes is greater than the distance between the center connecting lines of the two bottom surface holes on the bottom surface of the lower connecting body 23. The lower connecting body 21 may also be welded directly to the metal strip.

The working principle is as follows:

firstly, connecting a connecting part at the lower part of a crab pot hook with a hanging rope 6 of a crab pot 7;

secondly, opening the hook 11 according to the movable sealing block 4, enabling the bottom of the lifting rope 5 to enter the inner cavity of the hook 11 of the crab pot hook from the opening of the hook 11, and then connecting the upper end of the lifting rope 5 with the main cable 9, so that each crab pot 7 is fixedly hung on the main cable 9 at intervals through the respective crab pot hook;

thirdly, the shrimp and crab catching boat sails on the sea surface and gradually releases the main mooring rope 9, and the crab pot 7 is completely sunk into the sea water to carry out shrimp and crab catching operation;

fourthly, after the shrimp and crab catching operation is finished, the shrimp and crab catching boat gradually winds and retracts the main cable 9, the main cable 9 passes through the clamping frame 8 which is in a portal frame shape above the boat body, the lifting rope 5 sequentially passes through the clamping groove 81 in the clamping frame 8, because the transverse width of the upper connecting body 21 is larger than the transverse width of the clamping groove 81, when the upper connecting body 21 of the crab pot hook reaches the clamping frame 8, the upper connecting body 21 is blocked outside the clamping frame 8, the main cable 9 continuously passes through the clamping groove 81, the upper connecting body 21 obtains external force to compress the upper connecting body 21, the push rod 20 on the upper connecting body 21 moves downwards to pull the tail part of the tripping block, the tail part of the tripping block 3 swings downwards by taking the hook tip of the hook 11 as the center, meanwhile, the top cylinder rod 24 moves downwards along with the upper connecting body 21 to separate the top surface of the top cylinder rod 21 from the tripping block 3, at the moment, the movable sealing block 4 loses the supporting force of the tripping block 3 and then passes through the outward torsion force of, the movable sealing block 4 is enabled to rotate outwards, the top of the movable sealing block 4 is separated from the hook tip of the hook 11 to form an opening of the hook 11, when the pulling force of the lifting rope 5 is continuously increased, the tail end of the movable trip block is enabled to be at the hook tip position, and the bottom edge 31 of the movable trip block 4 forms an angle that the lifting rope 5 slides out, the lifting rope 5 in the hook 11 slides out of the opening of the hook 11 to be separated from the hook 11, and the crab pot 7 automatically falls into the crab pot due to gravity.

The setting of card frame 8 is in the front portion of hull support, the top of card frame 8 is fixed mutually through the top of connecting horizontal pole with the hull support, is provided with the relative hull support pivoted cylinder of ability on the upper portion of hull support, and the one end of total cable 9 is connected with the drive roller that can convolute total hawser 9 and release total hawser 9, and the other end of total cable 9 stretches into in the ocean backward through the cylinder change.

Claims (10)

1. A crab pot hook capable of being automatically unlocked comprises a hanging piece (1), wherein a connecting part (13) capable of being connected with a hanging rope (6) of a crab pot (7) is arranged at the bottom of the hanging piece (1), a hook (11) capable of being hung and buckled with a hanging rope (5) is arranged at the top of the hanging piece (1), a tripping structure capable of automatically tripping the hanging rope (5) hung and buckled in the hook (11) is further arranged on the hook (11), the tripping structure comprises a tripping block (3) and an elastic mechanism (2), the front end of the tripping block (3) can axially rotate along the hook end part of the hook (11), the tail end of the tripping block (3) is movably connected with the upper end of a push rod (20), the tail part of the tripping block (3) can move up and down along a sliding rod (10) on the hanging piece (1) as a limiting rail, the elastic mechanism (2) is arranged on the hanging piece (1) below the hook (11), the lower extreme of push rod (20) is connected with elastic mechanism (2), its characterized in that: the elastic mechanism (2) comprises an upper connecting body (21), a lower connecting body (23) and a cylindrical spring (22), the hanging piece (1) is formed by bending a metal strip, the hook (11) is formed by bending the upper end of the metal strip, the lower connecting body (23) is connected in the lower parts of the left and right vertical metal strips bent by the metal strips, the upper connecting body (21) is positioned above the lower connecting body (23) and can be penetrated at the upper parts of the left and right vertical metal strips in a vertically sliding manner, the cylindrical spring (22) is positioned between the upper connector (21) and the lower connector (23) and in the metal strip middle through cavity (12) between the left vertical metal strip and the right vertical metal strip, the upper end of the cylindrical spring (22) is connected with the corresponding bottom surface of the upper connector (21), and the lower end of the cylindrical spring (22) is connected with the corresponding top surface of the lower connecting body (23).

2. The crab pot hanger of claim 1, wherein: the upper connecting body (21) is a cylindrical body, the lower end of the push rod (20) is movably connected with the top of the cylindrical body, a bottom surface cavity (211) capable of extending into the upper end of the cylindrical spring (22) is arranged on the bottom surface of the cylindrical body, and the top end of the cylindrical spring (22) is connected with the bottom surface of the bottom surface cavity (211).

3. The crab pot hanger of claim 2, wherein: the top end of the cylindrical spring (22) is welded or bonded with the bottom surface of the bottom surface concave cavity (211), and the bottom end of the cylindrical spring (22) is welded or bonded with the corresponding top surface of the lower connecting body (23).

4. The crab pot hanger of claim 2, wherein: the top surface of the column body is provided with a waist-shaped groove (212), the side part of the column body is inserted with a rotating shaft (213) penetrating through the side wall of the waist-shaped groove, the lower end of the push rod (20) extends into the waist-shaped groove (212), the lower end of the push rod (20) is provided with a rotating sleeve (201), and the rotating sleeve (201) can be rotatably sleeved on the rotating shaft (213).

5. The crab pot hook as claimed in any one of claims 1 to 4, wherein: the left and right vertical metal strips between the upper connecting body (21) and the lower connecting body (23) are folding rods with large upper end distance and small lower end distance.

6. The crab pot hook as claimed in any one of claims 1 to 4, wherein: the hanger (1) is formed by bending an elastic metal strip, and the hook (11) is formed by bending the upper end of the elastic metal strip.

7. The crab pot hook as claimed in any one of claims 1 to 4, wherein: the hook (11) is provided with a sealing part which can automatically close the opening of the hook after the lifting rope (5) enters the hook cavity of the hook.

8. The crab pot hanger of claim 7, wherein: the sealing part comprises a movable sealing block (4) and a top cylinder rod (24) fixedly and convexly arranged on the top surface of the upper connecting body (21), one end of the metal strip sequentially penetrates through the inner cavities of the lower connecting body (23), the upper connecting body (21) and the top cylinder rod (24) from bottom to top and extends out of the top surface of the top cylinder rod, the lower part of the movable sealing block (4) is rotatably connected with the end part of the metal strip positioned above the cylinder ejecting rod (24), and the cylinder ejection rod (24) can move up and down along the metal strip along with the up-and-down movement of the upper connecting body (21), a torsion spring (44) which can keep the outward rotation trend of the movable sealing block (4) is arranged at the rotating position of the movable sealing block (4), an extension part (25) is arranged on the top of the top cylinder rod (24) upwards, when no external force is applied, the extension part (25) is supported together by the torque force of the torsion spring (44) and clinging to the back of the movable sealing block (4).

9. The crab pot hanger of claim 8, wherein: the movable sealing block (4) is provided with an arc-shaped notch (41) which is convenient for the lifting rope (5) to be clamped in.

10. The crab pot hook as claimed in any one of claims 1 to 4, wherein: the buckle release block (3) is a groove movable plate with an opening at the top, the hook (11) can be arranged in a groove above the buckle release block (3), the front part of the buckle release block (3) is rotationally connected with the hook (11) through a rotating shaft pin (32), the tail part of the buckle release block (3) is used for connecting two groove side plates together through a rear shaft pin (33), the rear shaft pin (33) is positioned at the lower position of the front part of the sliding rod (10) and the bottom surface of the hook (11) and is movably connected with the upper end of the push rod (20) on the rear shaft pin (33) positioned below the bottom surface of the hook (11), or the buckle release block (3) is provided with two blocks, the two buckle release blocks (3) are symmetrically clamped on the two side surfaces of the hook (11), the front part of the buckle release block (3) is rotationally connected with the hook (11) through the rotating shaft pin (32), and the tail part of the buckle release block (3) is used for connecting the two buckle release blocks (3) together through the rear shaft pin (33, the rear shaft pin (33) is located in the front of the sliding rod (10) and below the bottom surface of the hook (11), the rear shaft pin (33) is movably connected with the upper end of the push rod (20), the sliding rod (10) is a metal strip of a shank section of the pendant (1), and a concave cavity at the tail of the trip block (3) can be clamped on the metal strip of the shank section in a vertically sliding mode.

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