Anti-escape device for rice, shrimp and soft-shelled turtle co-culture mode

Abstract

The invention provides an anti-escape device in a rice, shrimp and soft-shelled turtle co-culture mode, and relates to the technical field of aquaculture, the anti-escape device comprises a vertical plug pin plate, and the top end part of the vertical plug pin plate is rotatably provided with a centering short shaft in a penetrating manner; a driving assembly is rotationally mounted at the head end part of the centering short shaft, and the driving assembly is integrally formed by two conical gear rings which are symmetrically arranged; a fourth bevel gear is rotationally arranged above the centering short shaft; and the two conical gear rings are in meshing transmission with a fourth bevel gear and two third bevel gears correspondingly, and a driving shaft in transmission with the fourth bevel gear through a key bar is installed on the centering short shaft and the fourth bevel gear in a jointly penetrating and sliding mode. And the two second bevel gears are correspondingly and rotationally matched with the two driving rings. The rotary operation mechanism has the use effect of three purposes, the situation that three sets of rotary operation mechanisms are configured for three use requirements can be omitted, the structure of the vertical nail inserting plate can be simplified, and the overall manufacturing consumables and manufacturing cost of the anti-escape device are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to an escape prevention device for a rice, shrimp and turtle co-culture mode. Background Art

[0002] The anti-escape device is a closed fence in a surrounding form composed of a fence iron sheet and a circle of ground-inserted positioning components for positioning the fence iron sheet. During use, when the fence iron sheet between two adjacent ground-inserted positioning components is damaged, it needs to be cut and replaced.

[0003] In order to prevent the intact and taut fence iron sheets adjacent to the two ends of the cut fence iron sheet from loosening and falling off from the ground insertion positioning component during the above replacement operation, the existing anti-escape device is equipped with two sets of mechanisms for clamping and fixing the fence iron sheet on the ground insertion positioning component. In this way, when cutting and replacing the worn fence iron sheet, it is only necessary to loosen the mechanisms for clamping and fixing only the two ends of the iron sheet on the ground insertion positioning component adjacent to the cut iron sheet, and the iron sheet can be removed and replaced, so that the intact iron sheets on both sides of the cut iron sheet are still stably fixed on the ground insertion positioning component and maintained in a tightened state; when the fence iron sheet is initially installed, the two clamping and fixing mechanisms need to be driven synchronously to position the fence iron sheet, and before and after the worn fence iron sheet is cut, disassembled and replaced, the clamping and fixing mechanisms adjacent to the iron sheet need to be driven separately to loosen and tighten. Therefore, the two clamping and fixing mechanisms have both the use requirements of being driven synchronously and the use requirements of being driven separately;

[0004] However, most of the existing anti-escape devices lack an operating mechanism that can be used to synchronously drive the two clamping and fixing mechanisms and to drive the two clamping and fixing mechanisms separately. It is necessary to set three sets of operating mechanisms for separately driving and synchronously driving the two clamping and fixing mechanisms, which greatly complicates the structure of the anti-escape device and is not conducive to reducing the manufacturing consumables and cost of the anti-escape device. Summary of the invention

[0005] In view of this, the present invention provides an anti-escape device for rice, shrimp and turtle co-culture mode to solve the problem of consumables and cost that are not conducive to the manufacture of the anti-escape device.

[0006] The technical solution proposed by the present invention is: an anti-escape device for a rice, shrimp and turtle co-culture mode, specifically comprising a vertical nail plate, on which two L-shaped mounting plates are symmetrically welded; a horizontal transmission shaft is rotatably arranged above the horizontal plate sections at the top ends of the two L-shaped mounting plates, two third bevel gears are symmetrically welded and sleeved on the part near the middle of the horizontal transmission shaft, and two second bevel gears that are transmitted to the horizontal transmission shaft through key strips are symmetrically slidably sleeved on the two end parts of the horizontal transmission shaft; a centering short shaft is rotatably installed through the top end part of the vertical nail plate; a driving assembly is rotatably installed on the head end part of the centering short shaft The driving assembly is formed as one piece by two symmetrically arranged conical gear rings; a fourth bevel gear is rotatably arranged above the centering short shaft; the two conical gear rings are respectively meshed with the fourth bevel gear and the two third bevel gears for transmission, and a driving shaft that is driven by a key bar and the fourth bevel gear is slidably installed on the centering short shaft and the fourth bevel gear, and a plum blossom-shaped knob is welded on the top of the driving shaft; a force transmission ring is rotatably installed on the bottom end part of the driving shaft, and two pull rods are symmetrically rotatably connected on the force transmission ring, and the head ends of the two pull rods are rotatably connected with the driving ring; the two second bevel gears are correspondingly rotatably matched with the two driving rings.

[0007] Furthermore, it also includes fence iron sheets, and the anti-escape device is composed of a circle of vertical nail plates fixed by nails around the periphery of the rice field and fence iron sheets fixed around the circle of vertical nail plates.

[0008] Furthermore,

[0009] A threaded sleeve is rotatably mounted on the top horizontal plate sections of the two L-shaped mounting plates, and a first bevel gear is fixedly mounted on the top of the two threaded sleeves.

[0010] Furthermore, long clamps are movably arranged in the space between the vertical plate sections and the vertical nail plates of the two L-shaped mounting plates, and the two first bevel gears are used to respectively drive the two long clamps to tighten or loosen the fence iron sheet.

[0011] Furthermore, an L-shaped support rod is welded on the top portion of the vertical nail plate at a position between the two L-shaped mounting plates, and the middle portion of the horizontal transmission shaft penetrates and rotates with the top portion of the L-shaped support rod.

[0012] Furthermore, a U-shaped mounting frame is welded to a portion near the middle of the centering short shaft, and the fourth bevel gear is rotatably matched with a top middle portion of the U-shaped mounting frame.

[0013] Furthermore, a circular positioning plate is welded at the tail end of the centering short shaft, and three positioning holes are opened at equal intervals on the outer circumference of the circular positioning plate;

[0014] A horizontal insertion shaft positioned by spring pushing is slidably provided on the top end of the vertical nail plate on one side away from the L-shaped mounting plate, and the head end of the horizontal insertion shaft is plugged and matched with three positioning holes in an optional manner.

[0015] Furthermore, four connecting rods are symmetrically rotatably connected between the long clamping plate and the vertical plate section of the L-shaped mounting plate, a square sliding sleeve is slidably installed on the top part of the vertical plate section of the L-shaped mounting plate, and two second connecting rods are symmetrically rotatably connected between the square sliding sleeve and the two connecting rods on the upper side;

[0016] A vertical threaded shaft is welded on one side of the square sliding sleeve facing the vertical nail plate, and the vertical threaded shaft and the threaded sleeve are screwed through and matched;

[0017] The fence iron sheet is installed between two L-shaped installation plates and the vertical nail plates, and two long clamping plates are in top pressure contact with the fence iron sheet.

[0018] Furthermore, the bottom side of the vertical nail plate is of a cone-tip structure, a long cutting groove is provided through the middle position of the vertical nail plate in the width direction, and a horizontal hammer plate is bent at the top end of the vertical nail plate.

[0019] The invention provides an anti-escape device for rice, shrimp and turtle co-culture mode, which has the following beneficial effects:

[0020] 1. The vertical nail plate clamps and positions the fence iron sheet at the same time through the two long clamps thereon. When the fence iron sheet between two adjacent vertical nail plates is damaged and needs to be cut, removed and replaced separately, there is no need to simultaneously loosen the two long clamps 103 on one vertical nail plate 1. The corresponding long clamp 103 on the vertical nail plate 1 that clamps the damaged iron sheet can be loosened separately, and the damaged iron sheet can be cut and replaced separately, while the intact iron sheets on both sides of the damaged iron sheet are still kept in a state of being tightened and fixed on the vertical nail plates. This can prevent the intact iron sheet that does not need to be disassembled from being loosened and detached from the vertical nail plates when the damaged iron sheet is cut and replaced, eliminating the trouble of having to re-clamp and reinstall the intact iron sheet later. The operation is simple and helps to indirectly reduce the steps of cutting and replacing the damaged iron sheet.

[0021] 2. A rotary operating mechanism composed of a drive shaft, a force transmission ring, two pull rods, two drive rings and two second bevel gears connected together can be used for cutting and replacing damaged iron sheets on both sides of the vertical nail plate, and can drive the two long splints to tighten the damaged iron sheets on both sides separately. It can also be used for the initial installation of the fence iron sheet, and can synchronously drive the two long splints to tighten the fence iron sheet at the same time. It has the effect of one device with three uses, which eliminates the need to configure three sets of rotary operating mechanisms respectively for the above three uses, so that the above three uses can be performed separately by using a single set of rotary operating mechanisms, which helps to simplify the structure of the vertical nail plate and reduce the overall manufacturing consumables and cost of the anti-escape device.

[0022] 3. The rotary operating mechanism can execute the three different tension requirements separately by only swinging the drive shaft toward the first bevel gear a in the vertical state or swinging the drive shaft toward the first bevel gear b in the vertical state or restoring the drive shaft to the vertical state. The operation is simple, flexible and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0024] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0025] In the attached picture:

[0026] Figure 1 The schematic diagram of the overall use state of the present invention is shown;

[0027] Figure 2 A schematic diagram of the structure of the vertical nail plate in the present invention is shown;

[0028] Figure 3 A schematic diagram of the back side structure of the vertical nail plate in the present invention is shown;

[0029] Figure 4 A schematic diagram showing the installation position of the long splint in the present invention is shown;

[0030] Figure 5 A schematic diagram showing a bottom side view of an L-shaped mounting plate in the present invention is shown;

[0031] Figure 6 A schematic diagram showing the disassembly state of the long clamping plate and the threaded sleeve in the present invention is shown;

[0032] Figure 7 A relative position relationship diagram of the fourth bevel gear, the drive assembly and the third bevel gear in the present invention is shown;

[0033] Figure 8A schematic diagram of a bottom side view of a centering short shaft in the present invention is shown;

[0034] Fig. 9 A schematic diagram showing the disassembly state of the drive shaft and the horizontal transmission shaft in the present invention is shown;

[0035] Fig.10 The present invention is shown Figure 2 A schematic diagram of the enlarged structure of part A.

[0036] List of reference numerals:

[0037] 1. Vertical pin plate; 101. L-shaped mounting plate; 1011. Connecting rod; 1012. Threaded sleeve; 1013. First bevel gear; 1013a. First bevel gear a; 1013b. First bevel gear b; 102. Long cutting groove; 103. Long splint; 104. L-shaped support rod; 105. Horizontal hammer plate; 106. Square sliding sleeve; 1061. Second connecting rod; 1062. Vertical threaded shaft; 107. Horizontal plug shaft;

[0038] 2. Fence iron sheet;

[0039] 3. driving shaft; 301. pull rod; 302. driving ring; 303. force transmission ring;

[0040] 4. Horizontal transmission shaft; 401. Second bevel gear; 401a. Second bevel gear a; 401b. Second bevel gear b; 402. Third bevel gear;

[0041] 5. Centering short shaft; 501. Driving assembly; 502. U-shaped mounting frame; 503. Fourth bevel gear; 504. Circular positioning plate; 5041. Positioning hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0043] The following is an embodiment of the present invention, please refer to Figures 1 to 10 :

[0044] The present invention proposes an anti-escape device for rice, shrimp and turtle co-culture mode, comprising a vertical nail plate 1, on which two L-shaped mounting plates 101 are symmetrically welded; a horizontal transmission shaft 4 is rotatably arranged above the horizontal plate sections at the top of the two L-shaped mounting plates 101, and two third bevel gears 402 (such as symmetrically welded to the middle of the horizontal transmission shaft 4) are symmetrically welded to the part near the middle of the horizontal transmission shaft 4. Fig. 9 As shown in the figure, the two ends of the horizontal transmission shaft 4 are symmetrically slidably sleeved with two second bevel gears 401 that are driven by keys; the top part of the vertical nail plate 1 is penetrated and rotatably installed with a centering short shaft 5; the head end of the centering short shaft 5 is rotatably installed with a driving component 501, and the driving component 501 is integrally formed by two symmetrically arranged conical gear rings (as shown in the figure). Fig. 9 As shown); a fourth bevel gear 503 is rotatably arranged above the centering short shaft 5; two conical gear rings are respectively meshed with the fourth bevel gear 503 and the two third bevel gears 402 for transmission, and a driving shaft 3 that is transmitted with the fourth bevel gear 503 through a key bar is slidably installed on the centering short shaft 5 and the fourth bevel gear 503, and a plum blossom-shaped knob is welded on the top of the driving shaft 3; a force transmission ring 303 is rotatably installed on the bottom end part of the driving shaft 3, and two pull rods 301 are symmetrically rotatably connected on the force transmission ring 303, and the head ends of the two pull rods 301 are rotatably connected to the driving ring 302; the two second bevel gears 401 are correspondingly rotatably matched with the two driving rings 302.

[0045] Preferably, it also includes a fence iron sheet 2, and the anti-escape device is composed of a circle of vertical nail plates 1 nailed and fixed around the periphery of the rice field and a fence iron sheet 2 fixed around the circle of vertical nail plates 1.

[0046] Preferably, the top horizontal plate sections of the two L-shaped mounting plates 101 are both penetrated and rotatably mounted with threaded sleeves 1012 (such as Figure 5 As shown), the top ends of the two threaded sleeves 1012 are fixedly sleeved with a first bevel gear 1013.

[0047] Preferably, a long clamping plate 103 is movably provided in the space between the vertical plate sections of the two L-shaped mounting plates 101 and the vertical nail inserting plates 1 .

[0048] Preferably, an L-shaped support rod 104 is welded on the top portion of the vertical nail plate 1 between the two L-shaped mounting plates 101 , and the middle portion of the horizontal transmission shaft 4 penetrates and rotates with the top portion of the L-shaped support rod 104 .

[0049] Preferably, a U-shaped mounting frame 502 is welded to a portion near the middle of the centering short shaft 5 , and the fourth bevel gear 503 is rotatably matched with a top middle portion of the U-shaped mounting frame 502 .

[0050] Preferably, a circular positioning plate 504 is welded to the tail end of the centering short shaft 5, and three positioning holes 5041 are evenly spaced on the outer circumference of the circular positioning plate 504; a horizontal plug shaft 107 positioned by a spring push is slidably provided on the side of the top end portion of the vertical pin plate 1 away from the L-shaped mounting plate 101, and the head end of the horizontal plug shaft 107 is selectively plugged into and matched with the three positioning holes 5041.

[0051] Preferably, four connecting rods 1011 (combined with Figure 3 - Figure 6 ), a square sleeve 106 is slidably installed on the top part of the vertical plate section of the L-shaped mounting plate 101, and two second connecting rods 1061 are symmetrically rotated between the square sleeve 106 and the two connecting rods 1011 on the upper side; a vertical threaded shaft 1062 is welded on the side of the square sleeve 106 facing the vertical nail plate 1, and the vertical threaded shaft 1062 and the threaded sleeve 1012 are penetrated and screwed together; the fence iron sheet 2 is installed between the two L-shaped mounting plates 101 and the vertical nail plate 1, and the two long splints 103 are in pressure contact with the fence iron sheet 2.

[0052] Preferably, the bottom side of the vertical nail plate 1 is of a cone-shaped structure, a long cutting groove 102 is provided through the middle position of the vertical nail plate 1 in the width direction, and a horizontal hammer plate 105 is bent at the top of the vertical nail plate 1.

[0053] The working principle, specific details, implementation steps, functions and interrelationships of the above-mentioned features, and their roles in implementing the present invention are described in detail below:

[0054] A circle of vertical nail plates 1 and the fence iron sheets 2 fixed thereon together form an anti-escape fence that is closed and surrounds the periphery of the rice field. The anti-escape fence is nailed into the soil outside the rice field through a circle of vertical nail plates 1. The anti-escape fence can be used to enclose shrimps and turtles to prevent them from escaping from the rice field. By using an external hammering tool to strike the horizontal hammer plate 105, the vertical nail plates 1 can be pushed and nailed into the soil, and the vertical nail plates 1 can be installed and positioned.

[0055] The long splint 103 and the four connecting rods 1011 are connected together to form a parallelogram swing mechanism. Through the parallelogram swing mechanism, any connecting rod 1011 that swings up and down drives the four connecting rods 1011 to swing synchronously, and controls the long splint 103 to slide toward or away from the vertical nail plate 1 while moving up and down, so as to loosen or tighten the fence iron sheet 2; the square sliding sleeve 106, the two connecting rods 1011 on the upper side and the two second connecting rods 1061 are connected together to form two sets of crank rocker mechanisms. Through the two sets of crank rocker mechanisms, the square sliding sleeve 106 that slides up and down can drive the two connecting rods 1011 on the upper side to swing up and down; when the threaded sleeve 1012 rotates forward and reverse, it can push and drive the vertical threaded shaft 1062 and the square sliding sleeve 106 to slide up and down, and drive the long splint 103 to loosen or tighten the fence iron sheet 2.

[0056] The vertical nail plate 1 clamps and positions the fence iron sheet 2 at the same time through the two long clamps 103 thereon. When the fence iron sheet 2 between two adjacent vertical nail plates 1 is damaged and needs to be cut, removed and replaced separately, there is no need to simultaneously loosen the two long clamps 103 on one vertical nail plate 1. The corresponding long clamp 103 on the vertical nail plate 1 that clamps the damaged iron sheet can be loosened separately, and the damaged iron sheet can be cut and replaced separately, while the intact iron sheets on both sides of the damaged iron sheet are still kept in a state of being tightened and fixed on the vertical nail plate 1. This can prevent the intact iron sheet that does not need to be disassembled from being loosened and detached from the vertical nail plate 1 when the damaged iron sheet is cut and replaced, eliminating the trouble of having to re-clamp and reinstall the intact iron sheet later. The operation is simple and helps to indirectly reduce the steps of cutting and replacing the damaged iron sheet.

[0057] During the process of cutting and replacing damaged iron sheets, the cutting blade can be inserted into the space inside the long cutting groove 102 when cutting through the damaged iron sheets. This can prevent the cutting blade from directly contacting the vertical nail plate 1 and cutting the vertical nail plate 1, which helps to implement non-destructive protection for the vertical nail plate 1 during the process of cutting and replacing the damaged iron sheets.

[0058] It should be noted that, for ease of understanding, Fig.10 As shown, the first bevel gear 1013 is divided into a first bevel gear a1013a located on the left and a first bevel gear b1013b located on the right, and the second bevel gear 401 is divided into a second bevel gear a401a located on the left and a second bevel gear b401b located on the right.

[0059] In the initial state, the two second bevel gears 401 are kept separated from the two first bevel gears 1013 (refer to Fig.10); through the fourth bevel gear 503, the drive shaft 3 can rotate the drive assembly 501, and through the two third bevel gears 402, the drive assembly 501 can rotate and drive the horizontal transmission shaft 4; through the centering short shaft 5, the drive shaft 3 can swing around the axis of the centering short shaft 5 toward the two sides where the two second bevel gears 401 are located; when the drive shaft 3 is positioned in the vertical support state, it is connected with the force transmission ring 303, the two pull rods 301, the two drive rings 302 and the two second bevel gears 401 to form two sets of crank slider mechanisms, through the two sets of crank slider mechanisms The driving shaft 3 can slide up and down to drive the two driving rings 302 and the two second bevel gears 401 to slide toward each other. When the two second bevel gears 401 slide away from each other, they contact and mesh with the two first bevel gears 1013 respectively for transmission. At this time, the forward and reverse rotating driving shaft 3 can drive the two threaded sleeves 1012 to rotate forward and reverse synchronously, and control the two long splints 103 to tighten the fence iron sheet 2 at the same time, which is suitable for the synchronous tightening requirements of the fence iron sheet 2 during the initial installation; when the driving shaft 3 is in the swinging use state, it and the force transmission ring 303, the two pull rods 301, The two driving rings 302 and the two second bevel gears 401 are connected together to form two sets of crank rocker mechanisms. Through the two sets of crank rocker mechanisms, when the driving shaft 3 swings toward the second bevel gear a401a, the second bevel gear a401a can be pushed to slide toward the first bevel gear a1013a and engage with the first bevel gear a1013a, and at the same time, the second bevel gear b401b is pulled and driven to be disengaged from the first bevel gear b1013b, thereby releasing the power coupling between the horizontal transmission shaft 4 and the threaded sleeve 1012 on the side of the first bevel gear b1013b. When the driving shaft 3 rotates forward and reverse, the threaded sleeve 1012 on the side of the first bevel gear a1013a can be driven to rotate forward and reverse, and the long clamping plate 103 on this side can be controlled to loosen or tighten the damaged iron sheet on this side before and after replacement, which is suitable for the use demand of loosening or tightening the damaged iron sheet on this side separately when cutting and replacing the damaged iron sheet on the side of the first bevel gear a1013a; similarly, when the driving shaft 3 swings toward the second bevel gear b401b, it can be suitable for the use demand of loosening or tightening the damaged iron sheet on this side separately when cutting and replacing the damaged iron sheet on this side of the first bevel gear b1013b;The rotary operating mechanism composed of the driving shaft 3, the force transmission ring 303, the two pull rods 301, the two driving rings 302 and the two second bevel gears 401 can be used to cut and replace the damaged iron sheets on both sides of the vertical nail plate 1, and drive the two long clamps 103 to tighten the damaged iron sheets on both sides separately. It can also be used to synchronously drive the two long clamps 103 to tighten the fence iron sheets 2 at the same time when the fence iron sheets 2 are initially installed. It has the effect of one device for three purposes, which can save the need to configure three sets of rotary operating mechanisms for the above three usage requirements respectively, so that the above three usage requirements can be respectively implemented by sharing one set of rotary operating mechanisms, which helps to simplify the structure of the vertical nail plate 1 and reduce the manufacturing consumables and cost of the anti-escape device as a whole. ;

[0060] By simply swinging the drive shaft 3 toward the first bevel gear a1013a in the upright state or swinging the drive shaft 3 toward the first bevel gear b1013b in the upright state or restoring the drive shaft 3 to the upright state, the rotary operating mechanism can respectively execute the above three different tightness requirements. The operation is simple, flexible and time-saving.

[0061] When the head end of the horizontal plug shaft 107 is respectively plugged into the three positioning holes 5041, the drive shaft 3 can be positioned in a swinging state toward the first bevel gear b1013b, a swinging state toward the first bevel gear a1013a, and an upright support state, to ensure that the above three tension requirements are stably and effectively implemented.

[0062] It is worth noting that since the drive shaft 3 is not slidably positioned, when the above three tension requirements are respectively executed, the second bevel gear a401a may be separated and disengaged from the first bevel gear a1013a, the second bevel gear b401b may be separated and disengaged from the first bevel gear b1013b, and the two second bevel gears 401 may be separated and disengaged from the two first bevel gears 1013. Therefore, when the above three tension requirements are respectively executed, the drive shaft 3 needs to be manually kept in an upward pulled state so that the above bevel gears can be kept in a stable meshing transmission state when not in use, thereby avoiding the above problems and ensuring the stable and effective execution of the three tension requirements.

[0063] The drive shaft 3 can be driven to rotate and pulled upwards for holding by the plum blossom-shaped knob.

[0064] In this article, there are a few points to note:

[0065] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0066] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0067] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anti-escape device for rice, shrimp and turtle co-culture mode, comprising a vertical nail plate (1), characterized in that: Two L-shaped mounting plates (101) are symmetrically welded on the vertical nail inserting plate (1); a horizontal transmission shaft (4) is rotatably arranged above the horizontal plate sections at the top ends of the two L-shaped mounting plates (101); two third bevel gears (402) are symmetrically welded and sleeved on the horizontal transmission shaft (4) near the middle; two second bevel gears (401) are symmetrically slidably sleeved on the two end portions of the horizontal transmission shaft (4) and are driven by key bars; a centering short shaft (5) is rotatably installed through the top end portion of the vertical nail inserting plate (1); a driving assembly (501) is rotatably installed on the head end portion of the centering short shaft (5), and the driving assembly (501) is integrally formed by two symmetrically arranged conical gear rings; A fourth bevel gear (503) is rotatably arranged above the centering short shaft (5); the two conical gear rings are respectively meshed with the fourth bevel gear (503) and the two third bevel gears (402) for transmission; a driving shaft (3) is slidably installed on the centering short shaft (5) and the fourth bevel gear (503) and is transmitted to the fourth bevel gear (503) through a key bar, and a plum blossom-shaped knob is welded on the top of the driving shaft (3); a force transmission ring (303) is rotatably installed on the bottom end of the driving shaft (3), and two pull rods (301) are symmetrically rotatably connected on the force transmission ring (303), and the head ends of the two pull rods (301) are rotatably connected to the driving ring (302); the two second bevel gears (401) are correspondingly rotatably matched with the two driving rings (302).

2. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 1, characterized in that: It also comprises a fence iron sheet (2), wherein the anti-escape device is composed of a circle of vertical nail plates (1) fixed by nails around the periphery of the rice field and a fence iron sheet (2) fixed around the circle of vertical nail plates (1).

3. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 2, characterized in that: A threaded sleeve (1012) is rotatably mounted on the top horizontal plate sections of the two L-shaped mounting plates (101), and a first bevel gear (1013) is fixedly mounted on the tops of the two threaded sleeves (1012).

4. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 3, characterized in that: Long clamping plates (103) are movably arranged in the spaces between the vertical plate sections of the two L-shaped mounting plates (101) and the vertical nail inserting plates (1), and the two first bevel gears (1013) are used to respectively drive the two long clamping plates (103) to tighten or loosen the fence iron sheet (2).

5. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 1, characterized in that: An L-shaped support rod (104) is welded to the top end of the vertical nail inserting plate (1) between two L-shaped mounting plates (101), and the middle portion of the horizontal transmission shaft (4) is rotatably matched with the top end of the L-shaped support rod (104).

6. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 1, characterized in that: A U-shaped mounting frame (502) is welded to a portion near the middle of the centering short shaft (5), and the fourth bevel gear (503) is rotatably matched with a top middle portion of the U-shaped mounting frame (502).

7. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 1, characterized in that: A circular positioning plate (504) is welded to the tail end of the centering short shaft (5), and three positioning holes (5041) are formed at equal intervals on the outer circumference of the circular positioning plate (504); A horizontal insertion shaft (107) is slidably provided on the side of the top end of the vertical nail inserting plate (1) away from the L-shaped mounting plate (101), and is positioned by spring pushing. The head end of the horizontal insertion shaft (107) is plugged into and matched with three positioning holes (5041) in an optional manner.

8. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 4, characterized in that: Four connecting rods (1011) are symmetrically rotatably connected between the long clamping plate (103) and the vertical plate section of the L-shaped mounting plate (101); a square sliding sleeve (106) is slidably mounted on the top portion of the vertical plate section of the L-shaped mounting plate (101); two second connecting rods (1061) are symmetrically rotatably connected between the square sliding sleeve (106) and the two connecting rods (1011) at the upper side; A vertical threaded shaft (1062) is welded on one side of the square sliding sleeve (106) facing the vertical nail inserting plate (1), and the vertical threaded shaft (1062) and the threaded sleeve (1012) are screwed through and matched; The fence iron sheet (2) is installed between two L-shaped installation plates (101) and the vertical nail inserting plate (1), and two long clamping plates (103) are in top-pressing contact with the fence iron sheet (2).

9. The anti-escape device for rice, shrimp and turtle co-culture mode according to claim 1, characterized in that: The bottom side of the vertical nail inserting plate (1) is in a cone-shaped structure, a long cutting groove (102) is provided through the middle position of the vertical nail inserting plate (1) in the width direction, and a horizontal hammer plate (105) is formed by bending at the top end of the vertical nail inserting plate (1).

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