CN113277025B

CN113277025B - Lifting device for live fish bin of fishery boat

Info

Publication number: CN113277025B
Application number: CN202110449823.2A
Authority: CN
Inventors: 林毅良; 王承卓; 张大临
Original assignee: Chongqing Jingsui Cruise Manufacturing Co ltd
Current assignee: Chongqing Jingsui Cruise Manufacturing Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2022-10-21
Anticipated expiration: 2041-04-25
Also published as: CN113277025A

Abstract

The invention discloses a lifting device for a live fish bin of a fishery boat, and relates to the technical field of fishery boats. This a elevating gear for live fish storehouse of fishery boat, including fishery boat body, fishery boat body's top is provided with adjustment mechanism, elevating system, slewing mechanism and sliding mechanism. This a elevating gear for live fish storehouse of fishery boat, through first guide rail, first slide, the movable plate, the stand, the lifter plate, the couple, the cooperation of flexible net and connecting rod is used, can effectually remove the distance that changes between every flexible net according to the different quantity that the fish obtained, compare in the device of most inconvenient regulation, the device has effectively reduced the possibility of the damaged or fish extrusion death condition of fishing net that causes because of the friction when adjacent two sets of fishing nets are laminated each other, and can obtain the fish and classify, be convenient for discern, provide the guarantee for the life-span of fishing net and fish simultaneously, the regulation mode is simple, high durability and convenient use, do benefit to popularization and use.

Description

Lifting device for live fish bin of fishery boat

Technical Field

The invention relates to the technical field of fishery boats, in particular to a lifting device for a live fish bin of a fishery boat.

Background

Fishery boat can collect the catch of catching when fishing in the fishing net, hang the fishing net again and put on the ship, traditional fishery boat in the use, need store and shift the live fish, and partial fishery boat exists when too much or the catch in the fishing net is too much, fish in the fishing net can extrude and collide each other, can influence the save of its survival rate and later stage, and then influence the new freshness and the integrity that the fish caught, consequently, be not convenient for promote and use.

Disclosure of Invention

The invention aims to provide a lifting device for a live fish bin of a fishery boat, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a elevating gear for fish cabin that lives for fishery boat, includes fishery boat body, fishery boat body's top is provided with adjustment mechanism, elevating system, slewing mechanism and slide mechanism, and fishery boat body's inside is according to having seted up the opening, and fishery boat body's top fixed mounting has fixed riser, and the opening has been seted up at the top of fixed riser.

Preferably, the adjusting mechanism comprises a first guide rail, a first slide seat, a movable plate, a stand column, a lifting plate, a hook, flexible nets and connecting rods, the first guide rail is fixedly arranged at the top of the fixed vertical plate, the first slide seat is slidably arranged on the first guide rail, the movable plate is fixedly arranged at the front side of the first slide seat, the stand column is movably sleeved on the movable plate, the lifting plate is fixedly arranged at the bottom end of the stand column, the hook is fixedly arranged on the outer wall of one side of the lifting plate, the flexible nets are arranged on the hook, and the connecting rods are fixedly arranged at the front side of the movable plate, wherein the number of the first guide rail, the first slide seat, the movable plate, the stand column, the lifting plate, the hook, the flexible nets and the connecting rods is two, the distance between every two flexible nets can be effectively changed according to different fish harvests, compared with the devices which are inconvenient to adjust, the device effectively reduces the possibility of fish net damage or fish extrusion death caused by friction when two adjacent groups of fish nets are mutually attached, can classify and identify fishes, and simultaneously provides guarantee for the service lives of the fish nets and the fishes, has simple adjustment mode, convenient use, is beneficial to popularization and use, the top of the movable plate is fixedly provided with a positioning plate, the inside of the positioning plate is provided with a threaded hole, the internal thread of the threaded hole is provided with a thread fixing bolt, and the adjusted upright post and the adjusted movable plate are convenient to fix, thereby effectively increasing the stability of the device, further being convenient to control the movement of the movable plate and the upright post, increasing the plasticity and the application range of the device, the shape of the movable plate is a right angle, the shape of the fixed vertical plate is a right angle, being convenient for the lifting of the device and increasing the stability of the device, the connecting rod is positioned at the left side of the positioning plate and the thread fixing bolt, and the thread fixing bolt is not contacted with the connecting rod in the rotating process, prevent that the screw fixation bolt from contacting with the connecting rod, increase the device plasticity, the top fixed mounting of stand in the stopper, the quantity of stopper all is provided with the label for the top of five groups and stoppers, when preventing that the stand from droing, is convenient for obtain the fish and classify.

Preferably, the lifting mechanism comprises a second guide rail, a second slide seat, a motor fixing plate, a motor, a rotating rod, a winding frame, a traction rope, a mounting vertical plate, a fixed pulley, a sliding block and a lifting plate, the second guide rail is fixedly arranged at the top of the fishery boat body, the second slide seat is slidably arranged on the second guide rail, the motor fixing plate is fixedly arranged at the top of the second slide seat, the motor is fixedly arranged on the outer wall of one side of the motor fixing plate, the rotating rod is rotatably arranged on the outer wall of the other side of the motor fixing plate, an output shaft of the motor extends to the outer wall of the other side of the motor fixing plate through a coupler and is fixedly connected with the rotating rod, the winding frame is sleeved on the outer wall of the rotating rod, one end fixed mounting of haulage rope is on the outer wall of winding frame, installation riser fixed mounting is in the front side of second slide, the fixed pulley rotates to be installed in the top of installation riser, the haulage rope winding is on the outer wall of fixed pulley, the spout has been seted up to one side outer wall of installation riser, slider slidable mounting is in the inside of spout, lift and lift board fixed mounting is in one side outer wall of slider, the other end of haulage rope and the top fixed connection who lifts the board, it salvages the lift processing to obtain the fish, be convenient for obtain the fish after the fishing and shift and drag for, thereby conveniently obtain the fish and go up and down, and then be convenient for obtain the fish and take away, the practicality is high.

Preferably, slewing mechanism includes the third guide rail, the third slide, first rotation axis, first gear, first pinion rack and rotation handle, third guide rail fixed mounting is in the top of fishery boat body, third slide slidable mounting is on the third guide rail, first rotation axis rotates and installs in the front side of third slide, first gear cover is established on the outer wall of first rotation axis, first pinion rack fixed mounting is in the top of fishery boat body, first gear meshes with first pinion rack mutually, the one end of first rotation axis rotates the installation with the rear side of second slide, the other end of first rotation axis extends to the rear side of third slide and fixed mounting has first pinion rack, be convenient for carry out the horizontal regulation to movable plate and second slide, make things convenient for operating personnel to use, and then increase the security of device.

Preferably, slide mechanism includes the fixed plate, the sliding block, the second axis of rotation, the second gear, second pinion rack and moment of torsion, fixed plate fixed mounting is in the top of fishery boat body, the sliding tray has been seted up at the top of fixed plate, sliding block slidable mounting is in the inside of sliding tray, the second axis of rotation rotates and installs in the front side of sliding block, moment of torsion fixed mounting is in the one end of second axis of rotation, the one end of second axis of rotation extends to the rear side of sliding block and overlaps and be equipped with the second gear, second pinion rack fixed mounting is in the top of fixed plate, the second gear meshes with the second pinion rack, the one end of connecting rod rotates the installation with the top of second gear, wherein fixed plate, the sliding block, the second axis of rotation, the second gear, the quantity of second pinion rack and moment of torsion is two sets of, can obtain to carry out the distance adjustment to different kinds of fish, and convenient classification, and convenient popularization and use.

Preferably, the top fixed mounting of movable plate has the locating plate, and the threaded hole is seted up to the inside of locating plate, and the screw thread is installed to the inside screw thread of threaded hole and is screwed the bolt, is convenient for fix the stand after the regulation and movable plate to can effectual increase device's stability, and then be convenient for control the removal of movable plate and stand, increased the plasticity and the application scope of device.

Preferably, the movable plate is right-angled, and the fixed vertical plate is also right-angled, so that the lifting of the device is facilitated, and the stability of the device is improved.

Preferably, the connecting rod is located the left side of locating plate and screw fixing bolt, and the screw fixing bolt does not contact with the connecting rod at the pivoted in-process, prevents that the screw fixing bolt from contacting with the connecting rod, increases the device plasticity.

Preferably, the top fixed mounting of stand in the stopper, the quantity of stopper all is provided with the label for the top of five groups and stoppers, when preventing that the stand from droing, is convenient for obtain the fish and classify.

Compared with the prior art, the invention has the beneficial effects that:

(1) This a elevating gear for live fish storehouse of fishery boat, through first guide rail, first slide, the movable plate, the stand, the lifter plate, the couple, the cooperation of flexible net and connecting rod is used, can effectually remove the distance that changes between every flexible net according to the different quantity that the fish obtained, compare in the device of most inconvenient regulation, the device has effectively reduced the possibility of the damaged or fish extrusion death condition of fishing net that causes because of the friction when adjacent two sets of fishing nets are laminated each other, and can obtain the fish and classify, be convenient for discern, provide the guarantee for the life-span of fishing net and fish simultaneously, the regulation mode is simple, high durability and convenient use, do benefit to popularization and use.

(2) This a elevating gear for live fish storehouse of fishery boat uses through the cooperation of second guide rail, second slide, motor fixed plate, motor, dwang, winding frame, haulage rope, installation riser, fixed pulley, spout, slider and lift board, obtains to salvage the lift processing to the fish, is convenient for obtain the fish after fishing to shift and drag for to the convenience is obtained to the fish and is gone up and down, and then is convenient for obtain to the fish and takes away, and the practicality is high.

(3) This a elevating gear for live fish storehouse of fishery boat, through the third guide rail, the third slide, first axis of rotation, first gear, first pinion rack, the rotation handle, the fixed plate, the sliding tray, the sliding block, the second axis of rotation, the second gear, the cooperation of second pinion rack and moment of torsion is used, be convenient for carry out the horizontal regulation to movable plate and second slide, make things convenient for operating personnel to use, and then increase the security of device, thereby can obtain to the fish of different kinds and carry out the distance adjustment, and convenient classification, facilitate promotion and use.

(4) The lifting device for be used for live fish storehouse of fishery boat through the use of locating plate and screw fixation bolt, is convenient for fix stand and movable plate after adjusting to can effectual increase device stability, and then be convenient for control the removal of movable plate and stand, increase the plasticity and the application scope of device.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a left side view of the positioning plate of the present invention;

FIG. 5 is an enlarged view of part A of the present invention;

FIG. 6 is an enlarged view of part B of the present invention;

FIG. 7 is an enlarged view of section C of the present invention;

FIG. 8 is an enlarged view of section D of the present invention.

In the figure: 1 fishery boat body, 2 adjusting mechanism, 201 first guide rail, 202 first sliding seat, 203 moving plate, 204 upright post, 205 lifting plate, 206 hook, 207 flexible net, 208 connecting rod, 3 lifting mechanism, 301 second guide rail, 302 second sliding seat, 303 motor fixing plate, 304 motor, 305 rotating rod, 306 winding frame, 307 hauling rope, 308 installation vertical plate, 309 fixed pulley, 310 sliding groove, 311 sliding block, 312 lifting plate, 4 rotating mechanism, 401 third guide rail, 402 third sliding seat, 403 first rotating shaft, 404 first gear, 405 first toothed plate, 406 rotating handle, 5 sliding mechanism, 501 sliding block, 502 sliding groove, 503, 504 second rotating shaft, 505 second gear, 506 second toothed plate, 507 torque, 6 fixing vertical plate, 7 limiting block, 8 positioning plate, 9 thread fixing bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a elevating gear for fishery boat's live fish storehouse, includes fishery boat body 1, and fishery boat body 1's top is provided with adjustment mechanism 2, elevating system 3, slewing mechanism 4 and sliding mechanism 5, and fishery boat body 1's inside is according to having seted up the opening, and fishery boat body 1's top fixed mounting has fixed riser 6, and the opening has been seted up at the top of fixed riser 6.

Example two:

referring to fig. 1 to 8, based on the first embodiment, the adjusting mechanism 2 includes a first guide rail 201, a first sliding seat 202, a moving plate 203, a column 204, a lifting plate 205, a hook 206, a flexible net 207 and a connecting rod 208, the first guide rail 201 is fixedly installed on the top of the fixed vertical plate 6, the first sliding seat 202 is slidably installed on the first guide rail 201, the moving plate 203 is fixedly installed on the front side of the first sliding seat 202, the column 204 is movably sleeved on the moving plate 203, the lifting plate 205 is fixedly installed at the bottom end of the column 204, the hook 206 is fixedly installed on the outer wall of one side of the lifting plate 205, the flexible net 207 is arranged on the hook 206, and the connecting rod 208 is fixedly installed on the front side of the moving plate 203, wherein the first guide rail 201, the first sliding seat 202, the column 203, the lifting plate 205, the hooks 206, the flexible net 207 and the connecting rod 208 are two groups, the movable connecting rod 208 moves transversely, thereby driving the moving plate 203 to move transversely, driving the column 204 and the lifting plate 205 to drive the flexible net 207 to move transversely, thereby driving the first sliding seat 202 to slide transversely, thereby driving the first sliding seat to slide, and to adjust the flexible net 207, thereby reducing the possibility of fish catching, and providing a fish catching life for fish, and facilitating fish catching a fish catching device.

Further, the lifting mechanism 3 comprises a second guide rail 301, a second sliding seat 302, a motor fixing plate 303, a motor 304, a rotating rod 305, a winding frame 306, a traction rope 307, an installation vertical plate 308, a fixed pulley 309, a sliding block 311 and a lifting plate 312, the second guide rail 301 is fixedly installed at the top of the fishery boat body 1, the second sliding seat 302 is slidably installed on the second guide rail 301, the motor fixing plate 303 is fixedly installed at the top of the second sliding seat 302, the motor 304 is fixedly installed at the outer wall of one side of the motor fixing plate 303, the rotating rod 305 is rotatably installed at the outer wall of the other side of the motor fixing plate 303, an output shaft of the motor 304 extends to the outer wall of the other side of the motor fixing plate 303 through a coupler and is fixedly connected with the rotating rod 305, the winding frame 306 is sleeved on the outer wall of the rotating rod 305, one end of the traction rope 307 is fixedly installed on the outer wall of the winding frame 306, the installation vertical plate 308 is fixedly installed at the front side of the second sliding seat 302, the fixed pulley 309 is rotatably installed at the top of the installation vertical plate 308, the traction rope 307 is wound on the outer wall of the fixed pulley 309, a sliding groove 310 is formed in the outer wall of one side of the installation vertical plate 308, the sliding block 311 is slidably installed inside the sliding groove 310, the lifting plate 312 is fixedly installed on the outer wall of one side of the sliding block 311, the other end of the traction rope 307 is fixedly connected with the top of the lifting plate 312, the control motor 304 is started to drive the rotating rod 305 to rotate, so that the winding frame 306 is driven to rotate, the traction rope 307 is contracted, the lifting plate 312 and the sliding block 311 are driven to longitudinally move in the sliding groove 310, so that the lifting plate 205 is driven to longitudinally move, the flexible net 207 is fished, the fish catcher is fished and lifted, the fished fish catcher is convenient to transfer the fished fish catcher, the fish catcher is convenient to lift, the fish catcher is convenient to take the fish catcher, and the practicability is high.

Further, the rotating mechanism 4 includes a third guide rail 401, a third slide seat 402, a first rotating shaft 403, a first gear 404, a first toothed plate 405 and a rotating handle 406, the third guide rail 401 is fixedly mounted at the top of the fishery boat body 1, the third slide seat 402 is slidably mounted on the third guide rail 401, the first rotating shaft 403 is rotatably mounted at the front side of the third slide seat 402, the first gear 404 is sleeved on the outer wall of the first rotating shaft 403, the first toothed plate 405 is fixedly mounted at the top of the fishery boat body 1, the first gear 404 is meshed with the first toothed plate 405, one end of the first rotating shaft 403 is rotatably mounted at the rear side of the second slide seat 302, the other end of the first rotating shaft 403 extends to the rear side of the third slide seat 402 and is fixedly mounted with the first toothed plate 405, when a fish needs to be fished, the rotating handle 406 is rotated to drive the first rotating shaft 403 to rotate and drive the first gear 404 to rotate, thereby driving the first rotating shaft 403 and the third slide seat 402 to move the moving plate laterally, thereby facilitating lateral adjustment of the first rotating shaft 203 and the second slide seat 302, and further facilitating the use of the operators, and increasing the safety of the device.

Secondly, the sliding mechanism 5 includes a fixing plate 501, a sliding block 503, a second rotating shaft 504, a second gear 505, a second gear 506 and a torque 507, the fixing plate 501 is fixedly installed at the top of the fishing boat body 1, a sliding groove 502 is formed at the top of the fixing plate 501, the sliding block 503 is slidably installed inside the sliding groove 502, the second rotating shaft 504 is rotatably installed at the front side of the sliding block 503, the torque 507 is fixedly installed at one end of the second rotating shaft 504, one end of the second rotating shaft 504 extends to the rear side of the sliding block 503 and is sleeved with the second gear 505, the second gear 506 is fixedly installed at the top of the fixing plate 501, the second gear 505 is meshed with the second gear 506, one end of the connecting rod 208 is rotatably installed with the top of the second gear 505, wherein the numbers of the fixing plate 501, the sliding block 503, the second rotating shaft 504, the second gear 505, the second gear 506 and the torque 507 are two groups, the rotation of the torque 507 is controlled, the second rotating shaft 504 is driven to rotate, the second gear 505 is driven to transversely move, thereby driving the sliding block 503 to transversely move, and obtain distances for different types of fish, and facilitating classification and popularization and use.

The working principle is as follows: when the fishing device is used, firstly, the rotation of the torque 507 is controlled to drive the second rotating shaft 504 to rotate, the second gear 505 is driven to rotate, so that the sliding block 503 is driven to transversely move, the connecting rod 208 is driven to transversely move, the moving plate 203 is driven to transversely move, the upright post 204 and the lifting plate 205 are driven to transversely move, the flexible net 207 is driven to transversely move, so that the first sliding seat 202 is driven to transversely slide on the first guide rail 201, the distance between each flexible net 207 can be adjusted according to the fish in the flexible net 207, when the fish needs to be fished, the rotating handle 406 is rotated to drive the first rotating shaft 403 to rotate, so that the first rotating shaft 404 is driven to rotate, so that the first rotating shaft 402 and the third sliding seat 402 are driven to transversely move, then the second sliding seat 302 and the motor fixing plate 303 are driven to transversely move, the mounting vertical plate 308 is driven to transversely move, the sliding block 311 and the lifting plate 312 are driven to transversely move, the lifting plate 312 is moved to the lifting plate 205 to be fished, then the motor 304 is controlled to start, so that the rotating shaft 305 is driven to rotate, so that the traction rope 307 is retracted, the lifting plate 312 and the lifting plate 310 moves longitudinally in the sliding groove 207, so that the lifting plate can be fished.

Claims

1. The utility model provides a elevating gear for a live fish storehouse of fishery boat, includes fishery boat body (1), its characterized in that: the fishing boat comprises a fishing boat body (1), and is characterized in that an adjusting mechanism (2), a lifting mechanism (3), a rotating mechanism (4) and a sliding mechanism (5) are arranged above the fishing boat body (1), an opening is formed in the interior of the fishing boat body (1), a fixed vertical plate (6) is fixedly mounted at the top of the fishing boat body (1), the opening is formed in the top of the fixed vertical plate (6), the adjusting mechanism (2) comprises a first guide rail (201), a first sliding seat (202), a moving plate (203), a stand column (204), a lifting plate (205), a hook (206), a flexible net (207) and a connecting rod (208), the first guide rail (201) is fixedly mounted at the top of the fixed vertical plate (6), the first sliding seat (202) is slidably mounted on the first guide rail (201), the moving plate (203) is fixedly mounted at the front side of the first sliding seat (202), the stand column (204) is movably sleeved on the moving plate (203), the lifting plate (205) is fixedly mounted at the bottom end of the stand column (204), the hook (206) is fixedly mounted on the outer wall of one side of the lifting plate (205), the flexible net (207), the connecting rod (207), the first sliding seat (203), the moving plate (202), the front side of the first sliding seat (204), and the moving plate (202), the front side of the moving plate (203), wherein the first sliding seat (202), the moving plate (202), the connecting rod (203), the first sliding seat (202), the moving plate (203), the moving plate (202), the connecting rod (203), the moving plate (204) is mounted on the first sliding seat (204), the first guide rail (202), the lifting mechanism (3) comprises a second guide rail (301), a second sliding seat (302), a motor fixing plate (303), a motor (304), a rotating rod (305), a winding frame (306), a traction rope (307), an installation vertical plate (308), a fixed pulley (309), a sliding block (311) and a lifting plate (312), the second guide rail (301) is fixedly installed at the top of the fishing boat body (1), the second sliding seat (302) is slidably installed on the second guide rail (301), the motor fixing plate (303) is fixedly installed at the top of the second sliding seat (302), the motor (304) is fixedly installed on the outer wall of one side of the motor fixing plate (303), the rotating rod (305) is rotatably installed on the outer wall of the other side of the motor fixing plate (303), an output shaft of the motor (304) extends to the outer wall of the other side of the motor fixing plate (303) through the rotating rod and is fixedly connected with the motor fixing plate (305), the winding frame (306) is sleeved on the outer wall of the winding rope (305), one end of the traction rope (307) is installed on the outer wall of the winding frame (306), the top of the fixed pulley (308), and the vertical plate (308) is installed on the outer wall of the front side of the fixed pulley (308), the traction rope (307) is wound on the outer wall of the fixed pulley (309), a sliding groove (310) is formed in the outer wall of one side of the installation vertical plate (308), the sliding block (311) is slidably installed in the sliding groove (310), the lifting plate (312) is fixedly installed on the outer wall of one side of the sliding block (311), the other end of the traction rope (307) is fixedly connected with the top of the lifting plate (312), the rotating mechanism (4) comprises a third guide rail (401), a third sliding seat (402), a first rotating shaft (403), a first gear (404), a first toothed plate (405) and a rotating handle (406), the third guide rail (401) is fixedly installed on the top of the fishery boat body (1), third slide (402) slidable mounting is on third guide rail (401), first rotation axis (403) rotate and install the front side in third slide (402), first gear (404) cover is established on the outer wall of first rotation axis (403), first pinion rack (405) fixed mounting is in the top of fishery boat body (1), first gear (404) mesh with first pinion rack (405), the installation is rotated with the rear side of second slide (302) to the one end of first rotation axis (403), the other end of first rotation axis (403) extends to the rear side of third slide (402) and fixed mounting has first pinion rack (405), slide mechanism (5) include fixed plate (501), fixed plate (501), sliding block (503), second axis of rotation (504), second gear (505), second toothed plate (506) and moment of torsion (507), fixed plate (501) fixed mounting is in the top of fishery boat body (1), sliding tray (502) have been seted up at the top of fixed plate (501), sliding block (503) slidable mounting is in the inside of sliding tray (502), second axis of rotation (504) rotate and install in the front side of sliding block (503), moment of torsion (507) fixed mounting is in the one end of second axis of rotation (504), the one end of second axis of rotation (504) extends to the rear side of sliding block (503) and overlaps and is equipped with second gear (505), second toothed plate (506) fixed mounting is in the top of fixed plate (501), second gear (505) meshes with second toothed plate (506) mutually, the one end of connecting rod (208) rotates with the top of second gear (505) and installs, wherein fixed plate (501), sliding block (503), second axis of rotation (504), second gear (505), the quantity of second toothed plate (506) and moment of torsion (507) is two sets of torsion.

2. A lifting device for a live fish bin of a fishery boat according to claim 1, wherein: the top of the moving plate (203) is fixedly provided with a positioning plate (8), a threaded hole is formed in the positioning plate (8), and a thread fixing bolt (9) is arranged on the inner thread of the threaded hole.

3. A lifting device for a live fish bin of a fishery boat according to claim 2, wherein: the moving plate (203) is right-angled, and the fixed vertical plate (6) is also right-angled.

4. A lifting device for a live fish tank of a fishery boat according to claim 3, wherein: the connecting rod (208) is positioned on the left side of the positioning plate (8) and the threaded fixing bolt (9), and the threaded fixing bolt (9) is not contacted with the connecting rod (208) in the rotating process.

5. A lifting device for a live fish tank of a fishery boat according to claim 4, wherein: the top of stand (204) is fixed mounting in stopper (7), and the quantity of stopper (7) is five groups and the top of stopper (7) all is provided with the label.