Monitoring net cage for large-scale breeding of aquatic seedlings

Abstract

The invention discloses a monitoring net cage for large-scale breeding of aquatic fry, and relates to the field of aquaculture, the monitoring net cage comprises a base transverse plate and a fixed support arranged at the upper end of the base transverse plate, a side isolation net is arranged on the outer side of the fixed support, and a bottom isolation net is arranged at the bottom of the fixed support; a supporting column is arranged at the upper end of the middle end of the bottom separation net, and a panoramic camera is arranged at the upper end of the supporting column. According to the monitoring net cage for large-scale breeding of the aquatic product seedlings, when a water wheel plate drives a rotating lead screw to rotate, the rotating lead screw drags a lifting disc through a traction rope, the traction rope moves downwards to drive an adjusting plate under the angle change of a guide wheel, and due to the fact that the upper end and the lower end of the adjusting plate are rotationally installed, when the adjusting plate is dragged, the lifting disc can move downwards; the clamping plate at the upper end clamps the fixing support inwards along the guide rod, so that connection collapse between the fixing support and the base transverse plate is avoided, the device is prevented from being damaged, the structural strength of the device is improved, and the service life of the device is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to a monitoring net cage used for large-scale breeding of aquatic seedlings. Background Art

[0002] The monitoring cages for large-scale breeding of aquatic seedlings are specially designed equipment to improve the efficiency and effectiveness of fish breeding. The use of such monitoring cages will help promote the scale and modernization of aquaculture, improve breeding efficiency, and provide strong support for the development of the aquaculture industry.

[0003] In the prior art, when the net cage is in use, it is placed in water for a long time, which easily causes a lot of impurities to accumulate on the surface of the net cage, causing the net cage to be blocked, which is not conducive to the large-scale breeding of aquatic seedlings.

[0004] In order to overcome the above-mentioned shortcomings, a Chinese patent of the prior art (Announcement No. CN116806749A) discloses an artificial propagation method and an incubator for Channa tangli. A fish fry breeding and cultivation net cage is built in a pond, and male and female fish fry are cultured in separate net cages. After entering the breeding period, the male and female Channa tangli are cultured in the same net cage, and palm flakes or mussel shells are arranged at the edge of the pond. During the spawning stage of Channa tangli, the water temperature, pH value, and dissolved oxygen content of the pond are monitored. After 18-24 days, Channa tangli fry are fed after the pond appears. By separating the different growth stages of Channa tangli, the problem of Channa tangli being difficult to increase in number due to cannibalism of the big fish eating the small fish is avoided. At the same time, fish nests of different densities are arranged at the edge of the pond according to the body shape characteristics of male fish, which also avoids the male fish from easily contacting the fish nest and eating Channa tangli eggs, thereby affecting the yield of Channa tangli.

[0005] In order to overcome the above disadvantages, a Chinese patent of the prior art (publication number CN208821493U) discloses a fish egg and fry culture device, wherein a mounting hole matching with a support column is provided on a hollow top frame, and the support column is inserted into the mounting hole to install the hollow top frame at a position near the top of the support column. A fish net is arranged in a space surrounded by the hollow top frame and the support column to form an upwardly open net box, and artificial water grass is arranged in the net box, so as to form a fish egg and fry culture device that is convenient for collecting and hatching fish eggs, and is used for collecting fertilized eggs, hatching and collecting fry in the process of fish breeding, reducing the labor intensity of employees in the breeding season, and reducing the losses caused by problems such as collection and feeding disadvantages in the process of fry breeding. At the same time, the above-mentioned fish egg and fry culture device is detachable, easy to store, and convenient for maintenance and maintenance.

[0006] Although the existing technology can overcome the above-mentioned deficiencies, there are still other problems in its operation. For example, when the cage is placed in water to isolate the fry from the outside world, if the wind is strong, the speed of the water flow will increase, and the impact force on the cage will easily cause the cage to shift and be damaged, which may affect the use of the cage and may cause the fry inside to escape, which is not conducive to the large-scale breeding of aquatic seedlings by users. Summary of the invention

[0007] The purpose of the present invention is to provide a monitoring cage for large-scale breeding of aquatic seedlings, so as to solve the problem proposed in the above background technology that when the cage is placed in water to isolate the fry from the outside world, if the external wind is strong, the speed of the water flow will increase, and the impact force on the cage will easily cause the cage to shift and be damaged, which will easily affect the use of the cage and may cause the fry inside to escape, which is not conducive to the large-scale breeding of aquatic seedlings for users.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a monitoring cage for large-scale breeding of aquatic seedlings, comprising a base horizontal plate and a fixed bracket arranged on the upper end of the base horizontal plate, and a side isolation net is arranged on the outer side of the fixed bracket, and a bottom isolation net is arranged at the bottom of the fixed bracket, and a pillar is arranged at the middle and upper end of the bottom isolation net, and a panoramic camera is arranged on the upper end of the pillar; a servo motor is arranged at the upper end of the fixed bracket, and a movable cleaning mechanism is arranged at the output end of the servo motor, and the movable cleaning mechanism includes a threaded rod, and the threaded rod is arranged at the output end of the servo motor, and a waterproof shell is arranged on the outer side of the servo motor; a threaded sleeve is installed through the middle end of the base horizontal plate, and a stable embedding mechanism is arranged on the outer side of the threaded sleeve, and the stable embedding mechanism includes a stable cone plate, and the upper end of the stable cone plate is arranged at the lower end of the threaded sleeve; vertical poles are installed on the left and right sides of the base horizontal plate, and a stable anti-damage mechanism is arranged on the surface of the vertical pole, and the stable anti-damage mechanism includes a lifting disc, and the inside of the lifting disc is arranged on the surface of the vertical pole.

[0009] Furthermore, an embedded cone is fixedly installed at the bottom of the base horizontal plate, and the number of the embedded cones is set to four, and the embedded cones are located at the four corners of the bottom of the base horizontal plate.

[0010] Furthermore, the movable cleaning mechanism is provided with a fixed sleeve, and the lower end of the fixed sleeve is fixedly mounted on the upper end of the fixed bracket, and the left and right ends of the threaded rod are rotatably mounted with the fixed sleeve, and the left and right threaded rods are meshed and connected through a bevel gear set.

[0011] Furthermore, a movable block is threadedly installed on the surface of the threaded rod, and the movable block is in the shape of a groove, and a limiting rod is installed through the lower end of the movable block, and the left and right ends of the limiting rod are fixedly installed on the inner side of the fixed sleeve.

[0012] Furthermore, a cleaning brush is arranged on the inner side of the movable block, and a return spring is arranged between the cleaning brush and the movable block, and the inner side of the cleaning brush is in contact with the surface of the side isolation net.

[0013] Furthermore, the stable embedding mechanism is provided with a fixed circular bin, and the front and rear ends of the fixed circular bin are fixedly mounted on the upper end of the base horizontal plate through hard rods, and a rotating screw is rotatably mounted on the middle end of the fixed circular bin, and the lower end of the rotating screw is threadedly connected to the inner thread of the threaded sleeve.

[0014] Furthermore, positioning rods are installed through the left and right ends of the threaded sleeve, and the lower ends of the positioning rods are fixedly installed on the surface of the base horizontal plate.

[0015] Furthermore, a water wheel plate is fixedly installed at the middle end of the rotating screw, and the water wheel plate is located inside the fixed circular silo, and a water inlet is opened at the left front end of the fixed circular silo, and a water outlet is opened at the left rear end of the fixed circular silo, a one-way valve is arranged inside the water outlet, and the opening positions on the left and right sides of the fixed circular silo are opposite.

[0016] Furthermore, the stable and anti-damage mechanism is provided with a traction rope, and the outer side of the traction rope is fixedly mounted on the lower end of the lifting disc, and the inner end of the traction rope is fixedly mounted on the middle end of the rotating screw, and the middle end of the traction rope is fitted with a guide wheel, and the lower end of the guide wheel is fixedly mounted on the surface of the base cross plate.

[0017] Furthermore, an adjustment plate is rotatably mounted on the outer side of the lifting disc, a clamping plate is rotatably mounted on the upper end of the adjustment plate, a guide rod is penetrated and mounted on the middle end of the clamping plate, and the inner side of the guide rod is fixedly mounted on the outer wall of the fixed bracket.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When the water wheel plate drives the rotating screw to rotate, the rotating screw pulls the lifting disc through the traction rope. The traction rope pulls the lifting disc downward under the change of the angle of the guide wheel. At the same time, the lifting disc moves downward under the limit of the vertical rod and drives the adjustment plate. Since the upper and lower ends of the adjustment plate are rotatably installed, when the adjustment plate is pulled, the clamping plate at the upper end clamps the fixed bracket inward along the guide rod, so as to avoid the collapse of the connection between the fixed bracket and the base horizontal plate, avoid damage to the device, improve the structural strength of the device, and ensure the service life of the device.

[0020] 2. The bottom of the horizontal plate of the base is embedded in the mud at the bottom of the water through an embedding cone. At this time, the side isolation net and the bottom isolation net on the outside of the fixed bracket will isolate the inside of the fixed bracket from the outside world. At this time, the upper end of the fixed bracket is partially above the water surface, and the support at the upper end of the bottom isolation net and the panoramic camera are used to monitor the inside of the cage.

[0021] Furthermore, when the net cage needs to be cleaned, the servo motor inside the waterproof shell is started, and the start of the servo motor drives the threaded rod inside the fixed sleeve. When the threaded rod rotates, it can clean the inside and outside of the net cage as the movable block moves. At the same time, the threaded rods are meshed and connected by a bevel gear set, and can rotate synchronously to ensure the cleaning effect, so that impurities on the surface of the net cage can be cleaned, ensuring that the seedlings can have a clean environment during large-scale breeding, and avoiding the death of aquatic seedlings.

[0022] 3. When the monitoring cage is embedded in the soil at the bottom of the water, as the speed of the water flow increases, the threaded sleeve can move up and down under the limit of the positioning rod, and the water wheel plate drive can only rotate forward, so that the threaded sleeve drives the stabilizing cone plate to descend, and the stabilizing cone plate descends and embeds into the soil. In this way, driven by the water flow, the stabilizing cone plate can be more firmly embedded in the soil, ensuring the stability of the monitoring cage and further improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the cutaway three-dimensional structure of the side isolation net of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the threaded rod of the present invention when viewed from top.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the bottom isolation net of the present invention when viewed from above.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable block of the present invention in a side section.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the stable cone plate of the present invention.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the threaded sleeve in front view of the present invention.

[0030] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixed silo of the present invention.

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the stable anti-damage mechanism of the present invention.

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the lifting disc of the present invention from a side view.

[0033] In the figure: 1. base horizontal plate; 2. fixed bracket; 3. side isolation net; 4. bottom isolation net; 5. pillar; 6. panoramic camera; 7. embedded cone; 8. servo motor; 9. threaded rod; 10. fixed sleeve; 11. limit rod; 12. movable block; 13. bevel gear set; 14. reset spring; 15. cleaning brush; 16. fixed round bin; 17. rotating screw; 18. threaded sleeve; 19. stable cone plate; 20. water wheel plate; 21. positioning rod; 22. water inlet; 23. water outlet; 24. one-way valve; 25. traction rope; 26. guide wheel; 27. lifting disc; 28. vertical pole; 29. ​​adjustment plate; 30. clamping plate; 31. guide rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1: Figure 1-Figure 10 The technical solution shown is a monitoring cage for large-scale breeding of aquatic seedlings. In order to solve the problems of inconvenient cleaning of the cage surface, unstable fixation of the cage and easy damage, the following is disclosed: a base horizontal plate 1 and a fixed bracket 2 arranged at the upper end of the base horizontal plate 1, and a side isolation net 3 is arranged on the outer side of the fixed bracket 2, and a bottom isolation net 4 is arranged at the bottom of the fixed bracket 2, and a support 5 is arranged at the middle upper end of the bottom isolation net 4, and a panoramic camera 6 is arranged at the upper end of the support 5, a servo motor 8 is arranged at the upper end of the servo motor 8, and a movable cleaning mechanism is arranged at the output end of the servo motor 8, and the movable cleaning mechanism includes a threaded rod 9, and the threaded rod 9 is arranged at the output end of the servo motor 8, and a waterproof shell is provided on the outer side of the servo motor 8, and an embedded cone 7 is fixedly installed at the bottom of the base horizontal plate 1. , and the number of embedded cones 7 is set to four, and the embedded cones 7 are located at the four corners of the bottom of the base horizontal plate 1, the movable cleaning mechanism is provided with a fixed sleeve 10, and the lower end of the fixed sleeve 10 is fixedly installed on the upper end of the fixed bracket 2, and the left and right ends of the threaded rod 9 are rotatably installed with the fixed sleeve 10, and the left and right threaded rods 9 are meshed and connected through a bevel gear set 13, the surface of the threaded rod 9 is threadedly installed with a movable block 12, and the shape of the movable block 12 is a groove, and the lower end of the movable block 12 is penetrated and installed with a limiting rod 11, and the left and right ends of the limiting rod 11 are fixedly installed on the inner side of the fixed sleeve 10, a cleaning brush 15 is provided on the inner side of the movable block 12, and a return spring 14 is provided between the cleaning brush 15 and the movable block 12, and the inner side of the cleaning brush 15 fits the surface of the side isolation net 3.

[0036] The bottom of the base horizontal plate 1 is embedded in the mud at the bottom of the water through the embedding cone 7. At this time, the side isolation net 3 and the bottom isolation net 4 on the outside of the fixed bracket 2 isolate the inside of the fixed bracket 2 from the outside. At this time, the upper end of the fixed bracket 2 is partially above the water surface, and the support 5 and the panoramic camera 6 at the upper end of the bottom isolation net 4 are used to monitor the inside of the cage. At this time, aquatic seedlings can be bred on a large scale inside the cage. If it is used for a long time, impurities will accumulate on the surface of the cage, affecting the breeding of seedlings. When the cage needs to be cleaned, the servo motor 8 inside the waterproof shell is started. The start of the servo motor 8 drives the threaded rod 9 inside the fixed sleeve 10, and the threaded rod 9 When rotating, it can drive the movable block 12 with a threaded connection on the surface. The movable block 12 can move left and right to adjust the position under the limit of the limit rod 11. At the same time, the return spring 14 and the cleaning brush 15 on the inner side of the movable block 12 can make the cleaning brush 15 fit tightly against the side isolation net 3, and can clean the inside and outside of the net box as the movable block 12 moves. At the same time, the threaded rods 9 are meshed and connected with each other through the bevel gear set 13, and can rotate synchronously to ensure the cleaning effect, so that impurities on the surface of the net box can be cleaned, ensuring that the seedlings can have a clean environment during large-scale breeding, and avoiding the death of aquatic seedlings.

[0037] The middle end of the base horizontal plate 1 is penetrated by a threaded sleeve 18, and a stable embedding mechanism is arranged on the outside of the threaded sleeve 18, and the stable embedding mechanism includes a stable cone plate 19, and the upper end of the stable cone plate 19 is arranged at the lower end of the threaded sleeve 18, and the stable embedding mechanism is provided with a fixed round bin 16, and the front and rear ends of the fixed round bin 16 are fixedly installed on the upper end of the base horizontal plate 1 through a hard rod, and the middle end of the fixed round bin 16 is rotatably installed with a rotating screw 17, and the lower end of the rotating screw 17 is connected to the inner part of the threaded sleeve 18. Threaded connection, positioning rods 21 are installed through the left and right ends of the threaded sleeve 18, and the lower end of the positioning rod 21 is fixedly installed on the surface of the base horizontal plate 1, and a water wheel plate 20 is fixedly installed at the middle end of the rotating screw 17, and the water wheel plate 20 is located inside the fixed circular silo 16, and a water inlet 22 is opened at the front end of the left side of the fixed circular silo 16, and a water outlet 23 is opened at the rear end of the left side of the fixed circular silo 16, a one-way valve 24 is arranged inside the water outlet 23, and the left and right opening positions of the fixed circular silo 16 are opposite.

[0038] When the monitoring cage is embedded in the soil inside the bottom of the water, as the speed of the water flow increases, the water flows through the water inlet 22 through the interior of the fixed silo 16 and then is discharged from the water outlet 23, driving the water wheel plate 20 to drive the rotating screw 17. Under the action of the one-way valve 24, the rotating screw 17 is prevented from being driven in reverse. When the rotating screw 17 rotates, it can drive the threaded sleeve 18 threadedly connected thereto. The threaded sleeve 18 can move up and down under the limit of the positioning rod 21. The water wheel plate 20 can only be driven in the forward direction, so that the threaded sleeve 18 drives the stabilizing cone plate 19 to descend, and the stabilizing cone plate 19 descends and is embedded in the soil. As driven by the water flow, the stabilizing cone plate 19 can be more firmly embedded in the soil, ensuring the stability of the monitoring cage and further improving the stability of the device.

[0039] Vertical poles 28 are installed on the left and right sides of the base cross plate 1, and a stable anti-damage mechanism is set on the surface of the vertical poles 28, and the stable anti-damage mechanism includes a lifting disc 27, and the interior of the lifting disc 27 is set on the surface of the vertical pole 28, and the stable anti-damage mechanism is provided with a traction rope 25, and the outer side of the traction rope 25 is fixedly installed on the lower end of the lifting disc 27, and the inner end of the traction rope 25 is fixedly installed on the middle end of the rotating screw 17, and the middle end of the traction rope 25 is fitted with a guide wheel 26, and the lower end of the guide wheel 26 is fixedly installed on the surface of the base cross plate 1, and an adjusting plate 29 is rotatably installed on the outer side of the lifting disc 27, and a clamping plate 30 is rotatably installed on the upper end of the adjusting plate 29, and a guide rod 31 is installed through the middle end of the clamping plate 30, and the inner side of the guide rod 31 is fixedly installed on the outer wall of the fixed bracket 2.

[0040] When the water wheel plate 20 drives the rotating screw 17 to rotate, the rotating screw 17 pulls the lifting disc 27 through the traction rope 25. Under the action of the guide wheel 26, the traction rope 25 pulls the lifting disc 27 downward. At the same time, the lifting disc 27 moves downward under the limit of the vertical rod 28, driving the adjustment plate 29. Since the upper and lower ends of the adjustment plate 29 are rotatably installed, when the adjustment plate 29 is pulled, the clamping plate 30 at the upper end clamps the fixed bracket 2 inward along the guide rod 31, so as to avoid the collapse of the connection between the fixed bracket 2 and the base horizontal plate 1, avoid damage to the device, improve the structural strength of the device, and ensure the service life of the device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring cage for large-scale breeding of aquatic seedlings, comprising a base transverse plate (1) and a fixed bracket (2) arranged at the upper end of the base transverse plate (1), a side isolation net (3) being arranged on the outer side of the fixed bracket (2), a bottom isolation net (4) being arranged at the bottom of the fixed bracket (2), a support column (5) being arranged at the middle upper end of the bottom isolation net (4), and a panoramic camera (6) being arranged at the upper end of the support column (5); Features: A servo motor (8) is disposed at the upper end of the fixed bracket (2), and a movable cleaning mechanism is disposed at the output end of the servo motor (8), and the movable cleaning mechanism comprises a threaded rod (9), and the threaded rod (9) is disposed at the output end of the servo motor (8), and a waterproof shell is disposed on the outer side of the servo motor (8); A threaded sleeve (18) is installed through the middle end of the base horizontal plate (1), and a stable embedding mechanism is arranged on the outer side of the threaded sleeve (18), and the stable embedding mechanism includes a stable cone plate (19), and the upper end of the stable cone plate (19) is arranged on the lower end of the threaded sleeve (18); Vertical poles (28) are installed on the left and right sides of the base horizontal plate (1), and a stable anti-damage mechanism is arranged on the surface of the vertical pole (28), and the stable anti-damage mechanism includes a lifting disc (27), and the interior of the lifting disc (27) is arranged on the surface of the vertical pole (28).

2. A monitoring cage for large-scale breeding of aquatic seedlings according to claim 1, characterized in that: An embedded cone (7) is fixedly mounted on the bottom of the base transverse plate (1), and the number of the embedded cones (7) is four, and the embedded cones (7) are located at the four corners of the bottom of the base transverse plate (1).

3. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 1, characterized in that: The movable cleaning mechanism is also provided with a fixed sleeve (10), and the lower end of the fixed sleeve (10) is fixedly mounted on the upper end of the fixed bracket (2), and the left and right ends of the threaded rod (9) are rotatably mounted on the fixed sleeve (10), and the left and right threaded rods (9) are meshedly connected via a bevel gear set (13).

4. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 3 is characterized by: A movable block (12) is threadedly mounted on the surface of the threaded rod (9), and the movable block (12) is in the shape of a groove. A limiting rod (11) is installed through the lower end of the movable block (12), and the left and right ends of the limiting rod (11) are fixedly mounted on the inner side of the fixed sleeve (10).

5. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 4, characterized in that: A cleaning brush (15) is arranged on the inner side of the movable block (12), a return spring (14) is arranged between the cleaning brush (15) and the movable block (12), and the inner side of the cleaning brush (15) is in contact with the surface of the side isolation net (3).

6. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 1, characterized in that: The stable embedding mechanism is also provided with a fixed round bin (16), and the front and rear ends of the fixed round bin (16) are fixedly mounted on the upper end of the base horizontal plate (1) through hard rods, and a rotating screw rod (17) is rotatably mounted on the middle end of the fixed round bin (16), and the lower end of the rotating screw rod (17) is threadedly connected to the inner part of the threaded sleeve (18).

7. A monitoring cage for large-scale breeding of aquatic seedlings according to claim 6, characterized in that: Positioning rods (21) are installed through the left and right ends of the threaded sleeve (18), and the lower ends of the positioning rods (21) are fixedly installed on the surface of the base horizontal plate (1).

8. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 7, characterized in that: A water wheel plate (20) is fixedly mounted at the middle end of the rotating screw rod (17), and the water wheel plate (20) is located inside the fixed silo (16). A water inlet (22) is provided at the front end on the left side of the fixed silo (16), and a water outlet (23) is provided at the rear end on the left side of the fixed silo (16). A one-way valve (24) is provided inside the water outlet (23), and the opening positions on the left and right sides of the fixed silo (16) are opposite.

9. The monitoring cage for large-scale breeding of aquatic seedlings according to claim 1, characterized in that: The stable anti-damage mechanism is also provided with a traction rope (25), and the outer side of the traction rope (25) is fixedly mounted on the lower end of the lifting disc (27), and the inner side end of the traction rope (25) is fixedly mounted on the middle end of the rotating screw (17), and the middle end of the traction rope (25) is in contact with the guide wheel (26), and the lower end of the guide wheel (26) is fixedly mounted on the surface of the base horizontal plate (1).

10. A monitoring cage for large-scale breeding of aquatic seedlings according to claim 9, characterized in that: An adjusting plate (29) is rotatably mounted on the outer side of the lifting disc (27), and a clamping plate (30) is rotatably mounted on the upper end of the adjusting plate (29), and a guide rod (31) is installed through the middle end of the clamping plate (30), and the inner side of the guide rod (31) is fixedly mounted on the outer wall of the fixed bracket (2).

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