CN212403175U

CN212403175U - Crab pot suspension hook capable of automatically tripping

Info

Publication number: CN212403175U
Application number: CN202020830365.8U
Authority: CN
Inventors: 魏志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2021-01-26
Anticipated expiration: 2030-05-18

Abstract

The utility model provides a crab pot that can automatic dropout hangs lifting hook, including the pendant, the bottom of pendant is provided with connecting portion, the top of pendant is provided with the couple, still be provided with the structure of unbuckling on the couple, the pendant is by the disposable both sides of controlling that moulds plastics and form and is vertical slide bar, upper portion is the couple of crotch, the lower part is convex cyclic annular body of rod, connecting portion are located the bottom of cyclic annular body of rod, the structure of unbuckling includes elastic mechanism, elastic mechanism includes the connector, lower connector and barrel spring, the connector is located the below of connector and takes off between two vertical slide bars about the cyclic annular body of rod of formula buckle down, go up the connector and overlap in the vertical slide bar on both sides about the cyclic annular body of rod with sliding from top to bottom, the lower extreme of barrel spring supports under on the connector, and the top of barrel spring. The utility model has the advantages that: the pendant is light in weight, corrosion-resistant, can not rust, long service life.

Description

Crab pot suspension hook capable of automatically tripping

Technical Field

The utility model relates to an equipment preparation technical field is catched to the ocean, especially indicates a crab pot that can automatic trip hangs lifting hook.

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 pendant in the hanger is inconvenient to manufacture, is easy to corrode and rust when being soaked in seawater, has short service life, and the bottom surface fixing effect of the cylindrical spring of the elastic mechanism is unsatisfactory, the area of the lower connecting disc for fixing is large, so that the shrimp and crab cage hanger is easily clamped reversely, the collection of shrimp and crab cages is influenced, and the damage of a cable and a cable winding and unwinding device can be caused, so the structure of the hanger needs to be further improved.

Disclosure of Invention

The utility model aims to solve the technical problem that a crab pot suspension lifting hook that low in production cost, pendant light in weight are corrosion-resistant, long service life is provided to above-mentioned prior art current situation, and can automatic dropout is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this ability automatic tripping's crab pot hangs lifting hook, including the pendant, the bottom of pendant is provided with the connecting portion that can be connected with the rope of hanging of crab pot, the top of pendant is provided with can hang the couple of detaining mutually with the lifting rope still be provided with on the couple and can hang the structure of unbuckling of the automatic dropout of lifting rope of detaining in the couple, its characterized in that: the pendant is by the disposable couple that is vertical slide bar, upper portion be the crotch of both sides about moulding plastics and form, the lower part is the convex cyclic annular body of rod of plastics, connecting portion are located the bottom of the cyclic annular body of rod, the structure of unbuckling includes elastic mechanism, elastic mechanism includes connector, lower connector and barrel spring, the connector is located the below of connector and takes off the formula buckle and control between two vertical slide bars about the cyclic annular body of rod down, go up the connector and can overlap in the vertical slide bar on both sides about the cyclic annular body of rod with sliding from top to bottom, the lower extreme of barrel spring supports under on the connector, and the top of barrel spring supports on last connector.

As an improvement, the tripping structure further comprises a tripping block, the front end of the tripping block can axially rotate along the end part of the hook, the tail end of the tripping block is movably connected with the upper end of the push rod, the tail part of the tripping block can move up and down along two left and right slide rods on the hanging piece as limiting rails, and the lower end of the push rod is connected with the elastic mechanism.

The improved structure is characterized in that left and right vertical sliding rods below the hook and above the cylindrical spring are connected together through a limiting supporting rod, and a rod body notch capable of penetrating through the push rod is formed in the limiting supporting rod.

The improved structure is characterized in that a notch which is shaped like an I and is transversely laid is arranged at the top of the upper connector, connector through holes communicated with the notch are formed in the bottom of the upper connector, the left vertical sliding rod and the right vertical sliding rod penetrate through the corresponding connector through holes respectively, the tops of the left vertical sliding rod and the right vertical sliding rod extend out of the corresponding notches, and the lower portion of the push rod is rotatably connected into the notch below the limiting support rod through a rotating shaft.

The bottom surface cavity is arranged on the bottom surface of the upper connector between the through holes of the connectors, and the top end of the cylindrical spring is inserted in the bottom surface cavity.

As an improvement, the upper connector is spherical or cylindrical, the lower connector is a block, the width of the block is smaller than that of the upper connector, a second limit support rod is arranged between the left vertical slide rod and the right vertical slide rod corresponding to the block, a limit concave part capable of being fixed on the second limit support rod in an inserting mode is arranged at the bottom of the block, and when the block is inserted on the hanging piece, a circular ring formed by the bottom of the block and the bottom of the annular rod body in an enclosing mode is the connecting part.

The number of the cylindrical springs is one, the top of the lower connecting body is provided with a limit convex part, and the bottom of each cylindrical spring is sleeved on the limit convex part; or the number of the cylindrical springs is two, one of the cylindrical springs is sleeved on the left vertical sliding rod between the upper connecting body and the lower connecting body, and the other cylindrical spring is sleeved on the right vertical sliding rod between the upper connecting body and the lower connecting body.

As an improvement, a sealing part which can automatically close the opening of the hook after a lifting rope enters the hook cavity of the hook is arranged at the hook, the sealing part comprises a movable sealing block and a top cylinder which is fixedly and convexly arranged on the top surface of an upper connector, one end of a pendant sequentially penetrates through an inner cavity of the lower connector, the upper connector and the top cylinder from bottom to top and extends out of the top surface of the top cylinder, the lower part of the movable sealing block is rotatably connected with the end part of the pendant positioned above the top cylinder, the top cylinder can move up and down along with the up and down movement of the upper connector, a torsion spring which can keep the movable sealing block to rotate outwards is arranged at the rotating part of the movable sealing block, an extending part is upwards arranged at the top of the top cylinder, and when the external force is absent, the extending part is closely attached to the back part of the movable sealing block through the torsion force of the torsion.

Further improvement, the movable sealing block is provided with an arc-shaped notch for the lifting rope to be conveniently clamped in.

The improved structure of the hanging piece is characterized in that the top cylinder is a U-shaped sleeve with an opening formed in the side part, a connecting lug is arranged at the bottom of the U-shaped sleeve and fixed in a connecting concave part on the top surface of the upper connecting body through a screw, and a sliding groove capable of enabling the U-shaped sleeve to slide up and down is formed in the side wall of a vertical sliding rod of the hanging piece.

Compared with the prior art, the utility model has the advantages of: the hanger is a ring-shaped rod body which is formed by plastic through one-time injection molding, has the left and right sides presenting vertical sliding rods, the upper part presenting hooks and the lower part presenting circular arc shape, and has the advantages of light weight, corrosion resistance, low raw material cost, convenient manufacture, no rustiness and long service life; the upper connector and the lower connector occupy small space and are light in weight, and the manufactured crab pot hanging hook is convenient to carry; the width of the lower connecting body is smaller than that of the upper connecting body, and if the crab pot hanging hook is reversely clamped on the boat frame, the crab pot hanging hook cannot be clamped, so that the influence on the collection of the shrimp and crab pots is avoided; the lower end of the cylindrical spring is sleeved on the convex part of the lower connecting body and is connected more firmly; 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; this crab pot hangs lifting hook design benefit, sound construction, long-term use is difficult to damage, and use this crab pot to hang the lifting hook and can effectively prevent losing of catching the crab pot, and this crab pot hangs the lifting hook and can relax with the help of the piece that declutches, easily, conveniently hangs the crab pot on the lifting rope (the lifting rope is fixed connection on the master cable rope), again can will hang the crab pot on the lifting rope through the piece that declutches from the master cable rope automatic drop off, intensity of labour has been reduced effectively, and it is very convenient to use, and the operation is safe, simple, not only laborsaving but also save money, the efficiency of the crab catching operation has been improved greatly.

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 FIG. 1 embodiment using two barrel springs;

FIG. 16 is a top view of FIG. 15;

FIG. 17 is a cross-sectional view taken along line B-B of FIG. 16;

FIG. 18 is a schematic view of an alternative top barrel construction of FIG. 1;

fig. 19 is an exploded view of the structure of fig. 18.

Detailed Description

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

As shown in fig. 1 to 19, the crab pot hanging hook capable of automatically releasing in this embodiment includes a hanging member 1, a connecting portion 13 capable of being connected with 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 with a hanging rope 5 is disposed at the top of the hanging member 1, a releasing structure capable of automatically releasing the hanging rope 5 hooked in the hook 11 is further disposed on the hook 11, the hanging member 1 is a hook 11 formed by injection molding of plastic at one time and having vertical sliding rods at left and right sides, a curved hook at upper portion, and a circular rod body having a circular arc lower portion, the connecting portion 13 is disposed at the bottom of the circular rod body, the releasing structure includes an elastic mechanism 2, the elastic mechanism 2 includes an upper connecting body 21, a lower connecting body 23 and a cylindrical spring 22, the lower connecting body 23 is disposed below the upper connecting body 21 and detachably fastened between the left and right vertical sliding rods of the circular rod body, the upper connecting body 21 is slidably disposed on the vertical sliding rods at left and, the lower end of the barrel spring 22 is supported on the lower connecting body 23, and the top of the barrel spring 22 is supported on the upper connecting body 21. The tripping structure further comprises a tripping block 3, 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 two left and right slide rods 10 on the pendant 1 as limiting rails, and the lower end of the push rod 20 is connected with the elastic mechanism 2. 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 left and right vertical sliding rods below the hook 11 and above the cylindrical spring 22 are connected together by a limit supporting rod 12. The limit support rod 12 is provided with a rod body notch which can pass through the push rod 20. The top of the upper connecting body 21 is provided with a horizontally-lying I-shaped notch 212, the bottom of the upper connecting body 21 is provided with a connecting body through hole 210 communicated with the notch 212, the left vertical sliding rod and the right vertical sliding rod are respectively arranged in the corresponding connecting body through holes 210 in a penetrating manner, the tops of the left vertical sliding rod and the right vertical sliding rod extend out of the corresponding notches 212, and the lower part of the push rod 20 is rotatably connected in the notch 212 below the limit support rod 12 through a rotating shaft 213. A bottom surface cavity 211 is formed on the bottom surface of the upper connector 21 between the connector through holes 210, and the top end of the cylindrical spring 22 is inserted into the bottom surface cavity 211. The limiting support rod 12 is composed of a first rod body and a second rod body which are arranged at intervals, the two ends of the first rod body and the two ends of the second rod body are respectively bonded or welded on the corresponding vertical slide rods, and the two ends of the limiting support rod 12 can also be in threaded connection on the corresponding vertical slide rods.

The upper connecting body 21 is spherical or cylindrical, the lower connecting body 23 is a block body, the width of the block body is smaller than that of the upper connecting body 21, a second limit support rod 231 is arranged between a left vertical slide rod and a right vertical slide rod which correspond to the block body, a limit concave part 232 which can be fixed on the second limit support rod 231 in an inserting mode is arranged at the bottom of the block body, and when the block body is inserted on the hanging piece 1, a circular ring formed by the bottom of the block body and the bottom of the annular rod body in an enclosing mode is the connecting part 13. The second limit support rod 231 may be a unitary structure integrally formed with the hanger 1 by plastic. The lateral part of the block body can also be provided with a limit groove which is inserted on the second limit support rod 231, so that the block body is more stably connected with the second limit support rod 231. The top of the second limit support rod 231 may be provided with a limit groove, and the limit groove is matched with the convex part on the bottom surface of the limit concave part 232 in the block body. When the block body is connected to the second limit support rod 231, the top surface of the block body may be flush with the top surface of the second limit support rod 231, or may be higher than the top surface of the second limit support rod 231.

The number of the cylindrical springs 22 is one, the top of the lower connecting body 23 is provided with a limit convex part 233, and the bottom of the cylindrical spring 22 is sleeved on the limit convex part 233; or, the number of the cylindrical springs 22 is two, one of the cylindrical springs 22 is sleeved on the left vertical slide rod 101 between the upper connecting body 21 and the lower connecting body 23, and the other cylindrical spring 22 is sleeved on the right vertical slide rod 102 between the upper connecting body 21 and the lower connecting body 23. The lower connecting body 23 can also be a structure formed by one-time injection molding of plastics, and the lower connecting body 23 can be integrally formed with the pendant 1 by injection molding.

The hanger comprises a hanger body 11, a hanging rope 5 and a top barrel 24, wherein the hanging rope 5 enters a hook cavity of the hanger body, the opening of the hanger body can be automatically closed, the opening comprises a movable sealing block 4 and the top barrel 24 which is fixedly and convexly arranged on the top surface of an upper connecting body 21, one end of a hanging piece 1 sequentially penetrates through inner cavities of a lower connecting body 23, the upper connecting body 21 and the top barrel 24 from bottom to top and extends out of the top surface of the top barrel 24, the lower portion of the movable sealing block 4 is rotatably connected with the end portion of the hanging piece 1 which is positioned above the top barrel 24, the top barrel 24 can move up and down along with the hanging piece 1 along with the up and down movement of the upper connecting body 21, a torsion spring 44 capable of keeping the movable sealing block 4 to rotate outwards is arranged at the rotating position of the movable sealing block 4, an extending portion 25 is upwards arranged at the top of the top barrel 24, and when no external force exists. The movable sealing block 4 is provided with an arc-shaped notch 41 into which the lifting rope 5 can be conveniently clamped. The bottom of the movable sealing block 4 is connected to the end of the vertical sliding rod through a connecting shaft 45, and the torsion spring 44 is sleeved on the connecting shaft 45. The top cylinder 24 is adhered to the upper connecting body 21 by glue, or the top cylinder 24 is a U-shaped sleeve 240 with an opening on the side, the bottom of the U-shaped sleeve 240 is provided with a connecting lug 241, the connecting lug 241 is fixed in the connecting concave part 214 on the top surface of the upper connecting body 21 by a screw, and the side wall of the vertical slide bar is provided with a slide groove 14 for the U-shaped sleeve 240 to slide up and down.

The trip block 3 is a groove movable block 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 end, the sliding rod 10 is a rod body at 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 rod body at the shank section in a vertically sliding manner.

The hanging piece 1, the upper connecting body 21 and the lower connecting body 23 are all of plastic structures, light in weight, corrosion resistant and free of rusting. The upper connector 21 can be a cylinder, so that the surface of the cylinder is smooth and is not easy to scratch a user, and the top angle and the bottom angle of the cylinder are round angles.

The working principle is as follows:

firstly, connecting a connecting part at the lower part of a crab pot hanging 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 hanging 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 hanging 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 hanging 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

1. The utility model provides a crab pot that can automatic trip hangs lifting hook, including pendant (1), the bottom of pendant (1) is provided with connecting portion (13) that can be connected with rope (6) of hanging of crab pot (7), the top of pendant (1) is provided with can hang couple (11) of detaining mutually with lifting rope (5) still be provided with on couple (11) and hang the structure of detaining lifting rope (5) automatic trip in couple (11), its characterized in that: pendant (1) is by plastics once only mould plastics about form both sides be vertical slide bar, upper portion be couple (11), the lower part of crotch and be the circular arc cyclic annular body of rod, connecting portion (13) are located the bottom of the cyclic annular body of rod, the structure of unbuckling includes elastic mechanism (2), elastic mechanism (2) are including last connector (21), lower connector (23) and barrel spring (22), connector (23) are located the below of going up connector (21) and take off the formula buckle about the cyclic annular body of rod between two vertical slide bars, go up connector (21) and can slide from top to bottom the ground cover in the cyclic annular body of rod about on the vertical slide bar on both sides, the lower extreme of barrel spring (22) supports under on connector (23), and the top of barrel spring (22) supports on last connector (21).

2. The crab pot suspension hook of claim 1, wherein: the structure of unbuckling still includes unbuckling piece (3), the front end of unbuckling piece (3) can be followed couple (11) hook tip and made axial rotation, and the tail end of unbuckling piece (3) is connected with the upper end activity of push rod (20), just two slide bars (10) about can following on pendant (1) of afterbody of unbuckling piece (3) can reciprocate as spacing rail, the lower extreme of push rod (20) is connected with elastic mechanism (2).

3. The crab pot suspension hook of claim 2, wherein: the left vertical sliding rod and the right vertical sliding rod which are arranged below the hook (11) and above the cylindrical spring (22) are connected together through a limiting supporting rod (12), and a rod body notch capable of penetrating through the push rod (20) is formed in the limiting supporting rod (12).

4. The crab pot suspension hook of claim 3, wherein: the top of the upper connecting body (21) is provided with a horizontally-lying I-shaped notch (212), the bottom of the upper connecting body (21) is provided with a connecting body through hole (210) communicated with the notch (212), the left vertical sliding rod and the right vertical sliding rod penetrate through the corresponding connecting body through hole (210), the tops of the left vertical sliding rod and the right vertical sliding rod extend out of the corresponding notch (212), and the lower part of the push rod (20) is rotatably connected in the notch (212) below the limiting support rod (12) through a rotating shaft (213).

5. The crab pot suspension hook of claim 4, wherein: a bottom surface cavity (211) is arranged on the bottom surface of the upper connecting body (21) between the connecting body through holes (210), and the top end of the cylindrical spring (22) is inserted into the bottom surface cavity (211).

6. A crab pot suspension hook as claimed in any one of claims 1 to 5, wherein: the upper connector (21) is spherical or cylindrical, the lower connector (23) is a block, the width of the block is smaller than that of the upper connector (21), a second limiting support rod (231) is arranged between the left vertical slide rod and the right vertical slide rod corresponding to the block, a limiting concave part (232) capable of being fixed on the second limiting support rod (231) in an inserting mode is arranged at the bottom of the block, and when the block is inserted on the hanging piece (1), a circular ring formed by the bottom of the block and the bottom of the annular rod body in an enclosing mode is the connecting part (13).

7. The crab pot suspension hook of claim 6, wherein: the number of the cylindrical springs (22) is one, the top of the lower connecting body (23) is provided with a limit convex part (233), and the bottom of each cylindrical spring (22) is sleeved on the limit convex part (233); or the number of the cylindrical springs (22) is two, one cylindrical spring (22) is sleeved on the left vertical sliding rod (101) between the upper connecting body (21) and the lower connecting body (23), and the other cylindrical spring (22) is sleeved on the right vertical sliding rod (102) between the upper connecting body (21) and the lower connecting body (23).

8. A crab pot suspension hook as claimed in any one of claims 1 to 5, 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, the sealing part comprises a movable sealing block (4) and a top barrel (24) fixedly and convexly arranged on the top surface of an upper connecting body (21), one end of the pendant (1) sequentially penetrates through the inner cavities of the lower connecting body (23), the upper connecting body (21) and the top barrel (24) from bottom to top to extend out of the top surface of the top barrel (24), the lower part of the movable sealing block (4) is rotationally connected with the end part of the pendant (1) positioned above the top barrel (24), the top barrel (24) can move up and down along with the up-and-down movement of the upper connecting body (21), a torsion spring (44) capable of keeping the movable sealing block (4) to rotate outwards is arranged at the rotating part of the movable sealing block (4), and an extending part (25) is upwards arranged at the top of the top barrel (24), when no external force is applied, the extension part (25) is closely attached to the back of the movable sealing block (4) through the torsion force of the torsion spring (44) and is supported together.

9. The crab pot suspension hook 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 suspension hook of claim 8, wherein: the top cylinder (24) is a U-shaped sleeve (240) with an opening at the side part, a connecting lug (241) is arranged at the bottom of the U-shaped sleeve (240), the connecting lug (241) is fixed in a connecting concave part (214) on the top surface of an upper connecting body (21) through a screw, and a sliding groove (14) for the U-shaped sleeve (240) to slide up and down is arranged on the side wall of a vertical sliding rod of the pendant (1).