A throwing equipment

Abstract

The present invention provides a material throwing device, belonging to the technical field of aquaculture. The material throwing device comprises a first electric reel, a second electric reel, a hull and at least one material throwing machine; the hull is arranged between the first electric reel and the second electric reel, the first electric reel and the second electric reel are connected by a guide rope, and the hull is connected to the guide rope by a traction rope; the material throwing machine is arranged on the hull, the material throwing machine throws material along a first direction, and the angle between the first direction and the guide rope is α, wherein 80°≤α≤100°; the material throwing time length of the material throwing machine is T1, and the time interval of the material throwing of the material throwing machine is T2; the moving distance of the hull in the time interval T1 is L. By adjusting the material throwing time interval of the material throwing machine, it is avoided that the material throwing area of ​​the material throwing machine is repeated in two adjacent material throwings, the comprehensiveness of the material throwing coverage and the material throwing efficiency of the material throwing machine are improved, the waste of materials is reduced, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to a material throwing device. Background Art

[0002] At present, the spreading of aquaculture feed in artificial breeding ponds is mostly done manually or by patrolling the ponds with small boats. This not only has high labor costs, but also has low efficiency and uneven spreading. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and provide a throwing device.

[0004] The present invention provides the following technical solution: a material throwing device, comprising a first electric reel, a second electric reel, a hull and at least one material throwing machine;

[0005] The hull is arranged between the first electric reel and the second electric reel, the first electric reel and the second electric reel are connected by a guide rope, and the hull is connected to the guide rope by a traction rope;

[0006] The material throwing machine is arranged on the hull, and the material throwing machine throws materials along a first direction, and the angle between the first direction and the guide rope is α, wherein 80°≤α≤100°;

[0007] When the throwing machine throws materials, the throwing time of the throwing machine is T1, wherein the value range of T1 is 0.5h≤T1≤2h;

[0008] The time interval of the throwing machine is T2, wherein the value range of T2 is 4h≤T2≤6h;

[0009] When the hull moves, the moving distance of the hull in the time interval T is L, wherein the value range of L is 40m≤L≤60m.

[0010] In some embodiments of the present invention, there are two material throwing machines, and the two material throwing machines are respectively located on both sides of the guide rope, and the throwing directions of the two material throwing machines are symmetrical with respect to the guide rope.

[0011] Furthermore, the throwing distance of the throwing machine is X, wherein the value range of X is 1m≤X≤10m;

[0012] The moving distance of the hull along the first direction is Y, where Y≥2X.

[0013] Furthermore, a first guide rail is provided on one side of the first electric reel, the first electric reel is slidably arranged on the first guide rail, and a first driving device is provided at one end of the first guide rail to drive the first electric reel to slide along the first guide rail through the first driving device.

[0014] Furthermore, a second guide rail is provided on one side of the second electric reel, and the second electric reel is slidably arranged on the second guide rail. A second driving device is provided at one end of the second guide rail to drive the second electric reel to slide along the second guide rail through the second driving device.

[0015] Furthermore, the angle between the first guide rail and the guide rope is α, wherein the value range of α is.

[0016] Furthermore, the angle between the second guide rail and the guide rope is β, where the value range of β is.

[0017] Further, a first displacement sensor is provided on a side of the first electric reel close to the hull, and the first displacement sensor is electrically connected to the first electric reel so as to detect the moving distance of the hull through the first displacement sensor;

[0018] The distance from the hull to the first displacement sensor is X, and when X≤1m or X≥10m, the first electric reel and the second electric reel stop running respectively.

[0019] Further, a second displacement sensor is provided on a side of the second electric reel close to the hull, and the second displacement sensor is electrically connected to the second electric reel so as to detect the moving distance of the hull through the second displacement sensor;

[0020] The distance from the hull to the second displacement sensor is Y. When Y≤1m or Y≥10m, the first electric reel and the second electric reel stop running respectively.

[0021] Furthermore, the hull is provided with a sewage suction device, which includes a sewage suction pump, a sewage suction pipe and a sewage suction head;

[0022] One end of the sewage suction pipe is connected to the sewage suction pump, and one end of the sewage suction pipe close to the hull is rotatably connected to the hull;

[0023] One end of the sewage suction pipe away from the hull is connected to the sewage suction head.

[0024] The embodiments of the present invention have the following advantages: the first electric reel is connected to the second electric reel by a guide rope, and the hull is connected to the guide rope by a traction rope, so that the hull is driven to move while the first electric reel and the second electric reel are rotated, and the throwing time interval of the throwing machine arranged on the hull is adjusted so that when the hull moves a distance L within the time interval T, the throwing machine completes one throwing, so as to avoid the situation where the throwing area of ​​the throwing machine is repeated in two adjacent throwings, thereby improving the comprehensiveness of the throwing coverage and the throwing efficiency of the throwing machine, and reducing material waste and costs.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic structural diagram of a material throwing device from one perspective is shown in some embodiments of the present invention;

[0028] Figure 2 A schematic structural diagram of a material throwing device from another perspective provided by some embodiments of the present invention is shown.

[0029] Description of main component symbols:

[0030] 10-first electric reel; 20-second electric reel; 30-hull; 40-thrower; 50-guide rope; 60-traction rope; 70-first guide rail; 80-first drive device; 90-first slider; 100-second guide rail; 110-second drive device; 120-second slider; 130-first displacement sensor; 140-second displacement sensor; 150-sewage suction device; 151-sewage suction pump; 152-sewage suction pipe; 153-sewage suction head. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] like Figure 1 and Figure 2 As shown, some embodiments of the present invention provide a material throwing device, which is mainly used for throwing materials in aquatic product breeding ponds. The material throwing device includes a first electric reel 10, a second electric reel 20, a hull 30 and at least one material throwing machine 40.

[0037] It should be noted that the throwing device is applied to aquaculture ponds of aquatic products, and the first electric reel 10 and the second electric reel 20 are arranged at two opposite sides of the aquaculture pond at intervals.

[0038] Preferably, the first electric reel 10 is arranged in the middle of one side of the breeding pond, and the second electric reel 20 is arranged in the middle of the other side of the breeding pond.

[0039] The number of the material throwing machines 40 can be one or two, which can be set according to actual conditions. Preferably, the number of the material throwing machines 40 is two.

[0040] At the same time, the hull 30 is disposed between the first electric reel 10 and the second electric reel 20. The first electric reel 10 and the second electric reel 20 are connected by the guide rope 50. Specifically, the cable in the first electric reel 10 and the cable in the second electric reel 20 are connected by the guide rope 50, so that the guide rope 50 moves with the rotation of the first electric reel 10 and the second electric reel 20 during the synchronous rotation of the first electric reel 10 and the second electric reel 20.

[0041] Specifically, the hull 30 is connected to the guide rope 50 via the traction rope 60 , so that the guide rope 50 drives the traction rope 60 to move while moving, and the hull 30 is driven to move along the axial direction of the guide rope 50 via the traction rope 60 .

[0042] In addition, the material throwing machine 40 is arranged on the hull 30, and the material throwing machine 40 throws materials along a first direction, and the angle between the first direction and the guide rope 50 is α, wherein 80°≤α≤100°.

[0043] It can be understood that the value of α can be any value among 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99° and 100°.

[0044] Preferably, in this embodiment, the value of α is 90°, that is, the first direction is perpendicular to the guide rope 50, so that when the hull 30 moves along the guide rope 50, the material is thrown to both sides through the throwing machine 40, avoiding repeated throwing during the throwing process to improve the throwing efficiency.

[0045] In some embodiments of the present invention, in order to avoid repeated throwing in the same area, when the throwing machine 40 throws the material, the throwing time of the throwing machine 40 is T1, wherein the value range of T1 is 0.5h≤T1≤2h, and it should be noted that the value of T1 can be specifically set according to the actual situation. The throwing time T1 mentioned here refers to the time taken by the throwing machine 40 to complete a throwing of the whole breeding pond.

[0046] In addition, the time interval of the throwing of the material throwing machine 40 is T2, wherein the value range of T2 is 4h≤T2≤6h. It should be noted that the time interval T2 of the throwing of the material throwing machine 40 mentioned here refers to the time interval before the next throwing of the material after the throwing machine 40 completes the throwing of the material to fully cover the breeding pond.

[0047] It is understandable that by controlling the interval time of the throwing machine 40 during the throwing process, it is possible to avoid repeated throwing of materials in the same area during the movement of the hull 30.

[0048] In addition, when the hull 30 moves, the moving distance of the hull 30 during the material throwing time T1 is L, wherein the value range of L is 40m≤L≤60m.

[0049] Specifically, when the hull 30 is moving, the time interval for a single throwing of the material by the throwing machine 40 is T3, wherein the value range of T3 is the time interval T3 of a single throwing of the material by the throwing machine, so as to avoid the overlapping of the throwing areas of the throwing machine 40 in the interval time T3, thereby improving the throwing efficiency, improving the uniformity and comprehensive coverage of the throwing, reducing material waste and reducing costs.

[0050] It should be noted that the single throwing time interval T3 of the throwing machine mentioned here refers to the time interval between the previous throwing and the next throwing of the throwing machine 40 during the throwing process of the throwing machine 40.

[0051] It can be understood that when the time interval of the throwing machine 40 is T1, the moving speed of the hull 30 is V, and the moving distance of the hull 30 is L, L=VT1 is satisfied.

[0052] like Figure 2 As shown, in some embodiments of the present invention, there are two throwing machines 40, which are respectively located on both sides of the guide rope 50, and the throwing directions of the two throwing machines 40 are opposite, and the throwing directions of the two throwing machines 40 are respectively perpendicular to the guide rope 50, and the throwing directions of the two throwing machines 40 are symmetrical with respect to the guide rope 50. In this way, when the hull 30 moves along the guide rope 50, the two throwing machines 40 throw materials to two opposite sides of the hull 30.

[0053] Preferably, the throwing direction of each throwing machine 40 is perpendicular to the guide rope 50 to improve the throwing efficiency.

[0054] It should be noted that the throwing machine 40 in the present invention can adjust the throwing distance of the material, that is, by adjusting the throwing distance of the material by the throwing machine 40, the throwing material in the breeding pond can be fully covered. Specifically, by adjusting the output power of the throwing machine 40, the throwing power of the material can be adjusted, that is, the initial speed of the material is adjusted, so as to adjust the moving distance of the material.

[0055] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a first guide rail 70 is provided on one side of the first electric reel 10, and the first electric reel 10 is slidably set on the first guide rail 70. A first driving device 80 is provided on the first guide rail 70, and an output end of the first driving device 80 is connected to the first electric reel 10 to drive the first electric reel 10 to slide on the first guide rail 70 through the first driving device 80 to adjust the position of the first electric reel 10.

[0056] Specifically, a first slider 90 is slidably disposed on the first guide rail 70 , and the first electric reel 10 is connected to the first slider 90 , so that the first slider 90 slides on the first guide rail 70 and drives the first electric reel 10 to slide along the first guide rail 70 .

[0057] At the same time, the output end of the first driving device 80 is connected to the first sliding block 90 so that the first driving device 80 drives the first sliding block 90 to slide along the first sliding rail.

[0058] In addition, a second guide rail 100 is provided on one side of the second electric reel 20, and the second electric reel 20 is slidably set on the second guide rail 100. A second driving device 110 is provided on the second guide rail 100, and the output end of the second driving device 110 is connected to the second electric reel 20 so as to drive the second electric reel 20 to slide on the second guide rail 100 through the second driving device 110 to adjust the position of the second electric reel 20.

[0059] Specifically, a second slider 120 is slidably disposed on the second guide rail 100 , and the second electric reel 20 is connected to the second slider 120 , so that the second slider 120 slides on the second guide rail 100 and drives the second electric reel 20 to slide along the second guide rail 100 .

[0060] At the same time, the output end of the second driving device 110 is connected to the second sliding block 120 , so that the second driving device 110 drives the second sliding block 120 to slide along the second sliding rail.

[0061] In this embodiment, in order to improve the throwing efficiency of the throwing machine 40, the angle between the first guide rail 70 and the guide rope 50 is β, wherein the value range of β is 80°≤β≤100°. At the same time, the angle between the second guide rail 100 and the guide rope 50 is γ, wherein the value range of γ is 80°≤γ≤100°. In addition, the angle between the first guide rail 70 and the guide rope 50 can be adjusted according to the shape of different breeding ponds, and the angle between the second guide rail 100 and the guide rope 50 can be adjusted at the same time to improve the utilization rate of the throwing equipment and improve the throwing efficiency.

[0062] It should be noted that the position of the hull 30 can be adjusted by adjusting the positions of the first electric reel 10 and the second electric reel 20 .

[0063] Specifically, when the hull 30 moves from the side close to the first electric reel 10 to the side of the second electric reel 20 in the aquaculture pond, that is, when the guide rope 50 is at this position, the throwing machine 40 throws the material to the corresponding area of ​​the aquaculture pond. At the same time, the first driving device 80 drives the first electric reel 10 to slide along the first guide rail 70, and the second driving device 110 drives the second electric reel 20 to slide along the second guide rail 100, and the guide rope 50 drives the hull 30 to move synchronously through the traction rope 60.

[0064] It should be noted that the first electric reel 10 and the second electric reel 20 move in the same direction and at the same speed, that is, the first electric reel 10 and the second reel move synchronously to improve the stability of the hull 30 during movement.

[0065] It can be understood that the movement of the guide rope 50 drives the hull 30 to move, so that the hull 30 moves to the next material throwing area, and the material is thrown by the throwing machine 40.

[0066] In some embodiments of the present invention, the throwing distance of the throwing machine 40 is X, where the value range of X is.

[0067] It should be noted that the throwing distance X of the throwing machine 40 refers to the moving distance of the material discharged by the throwing machine 40 from the throwing port of the throwing machine 40 along the first direction.

[0068] It can be understood that by adjusting the moving distance of the material thrown by the throwing machine 40, the coverage range of the material thrown by the discharge machine can be adjusted to adapt to breeding ponds of different areas and improve the utilization rate of the throwing equipment.

[0069] The moving distance of the hull 30 along the first direction is Y, where Y≥2X.

[0070] In this embodiment, the movement of the hull 30 along the first direction means that after the hull 30 completes throwing material in a throwing area, the first electric reel 10 is driven to move along the first direction by the first driving device 80, and the second electric reel 20 is driven to move along the first direction by the second driving device 110, and the guide rope 50 drives the hull 30 to move along the first direction through the traction rope 60, so that the hull 30 moves to the next throwing area to throw material to the next throwing area.

[0071] It should be noted that the material throwing area refers to the area covered by the material thrown out when the hull 30 moves in the direction of the guide rope 50 from the end of the guide rope 50 close to the first electric reel 10 to the end close to the second electric reel 20.

[0072] It can be understood that by controlling the moving distance of the hull 30 in the first direction, it is possible to avoid the material overlap when the material throwing machine 40 throws materials in two adjacent material throwing areas, thereby improving the material throwing efficiency and reducing costs.

[0073] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a first displacement sensor 130 is provided on a side of the first electric reel close to the hull 30 , and the first displacement sensor 130 is electrically connected to the first electric reel 10 to detect the moving distance of the hull 30 through the first displacement sensor 130 .

[0074] Specifically, the first displacement sensor 130 is connected to the first electric reel 10 so that when the first electric reel 10 slides on the first slide rail, the first displacement sensor 130 is driven to move synchronously, so as to improve the accuracy of the first displacement sensor 130 in detecting the displacement distance of the hull 30 .

[0075] In this embodiment, the distance from the hull 30 to the first displacement sensor 130 is X, and when X≤1m or X≥10m, the first electric reel and the second electric reel stop running respectively.

[0076] It can be understood that when X≤1m, it means that the distance between the hull 30 and the first displacement sensor 130 is not greater than 1m. At this time, the hull 30 is close to the shore of the breeding pond where the first displacement sensor 130 is installed, and a control signal is sent to the first electric reel through the first displacement sensor 130 to stop the first electric reel from rotating, thereby controlling the hull 30 to stop moving and preventing the hull 30 from hitting the shore.

[0077] In addition, when X≥10m, it means that the distance between the hull 30 and the first displacement sensor 130 is not less than 10m. At this time, the hull 30 is close to the shore of the breeding pond where the second displacement sensor 140 is installed, and a control signal is sent to the first electric reel through the first displacement sensor 130 to stop the first electric reel from rotating, thereby controlling the hull 30 to stop moving and preventing the hull 30 from hitting the shore.

[0078] It should be noted that the first electric reel 10 and the second electric reel 20 rotate synchronously, that is, the first electric reel 10 and the second electric reel 20 rotate synchronously clockwise or counterclockwise, and the rotation speeds of the first electric reel 10 and the second electric reel 20 are equal.

[0079] In this embodiment, the first drive motor and the second drive motor are both synchronous motors, so that the first drive motor and the second drive motor drive the first electric reel 10 and the second electric reel 20 to move synchronously.

[0080] Specifically, when the first electric reel 10 rotates, the second electric reel 20 rotates synchronously with the first electric reel 10. When the first electric reel 10 stops rotating, the second electric reel 20 stops rotating at the same time to avoid slackness of the guide rope 50, so as to improve the stability and accuracy of controlling the hull 30.

[0081] like Figure 2 As shown, in some embodiments of the present invention, a second displacement sensor 140 is provided on a side of the second electric reel close to the hull 30, and the second displacement sensor 140 is electrically connected to the second electric reel 20, so as to detect the moving distance of the hull 30 through the second displacement sensor 140;

[0082] Specifically, the second displacement sensor 140 is connected to the second electric reel 20 so that when the second electric reel 20 slides on the second slide rail, the second displacement sensor 140 is driven to move synchronously, so as to improve the accuracy of the second displacement sensor 140 in detecting the displacement distance of the hull 30 .

[0083] In this embodiment, the distance from the hull 30 to the second displacement sensor 140 is Y, and when Y≤1m or Y≥10m, the first electric reel and the second electric reel stop running respectively.

[0084] It should be noted that when Y≤1m, it means that the distance between the hull 30 and the second displacement sensor 140 is not greater than 1m. At this time, the hull 30 is close to the shore of the breeding pond where the second displacement sensor 140 is installed, and a control signal is sent to the second electric reel through the second displacement sensor 140 to stop the second electric reel from rotating, thereby controlling the hull 30 to stop moving and preventing the hull 30 from hitting the shore.

[0085] In addition, when Y≥10m, it means that the distance between the hull 30 and the second displacement sensor 140 is not less than 10m. At this time, the hull 30 is close to the shore of the breeding pond where the first displacement sensor 130 is installed, and a control signal is sent to the second electric reel through the second displacement sensor 140 to stop the second electric reel from rotating, thereby controlling the hull 30 to stop moving, avoiding the hull 30 from hitting the shore, so as to improve the stability of the hull 30 during movement.

[0086] like Figure 1 As shown, in some embodiments of the present invention, a sewage suction device 150 is provided on the hull 30, and the sewage suction device 150 includes a sewage suction pump 151, a sewage suction pipe 152 and a sewage suction head 153. One end of the sewage suction pipe 152 is connected to the sewage suction pump 151, and one end of the sewage suction pipe 152 close to the hull 30 is rotatably connected to the hull 30, so that when the hull 30 moves, the sewage suction pipe 152 can adjust the position relationship with the hull 30 according to actual conditions to improve the sewage suction efficiency.

[0087] At the same time, the end of the sewage suction pipe 152 away from the hull 30 is connected to the sewage suction head 153, so that the sewage in the breeding pond is diverted through the sewage suction head 153 to improve the sewage suction efficiency of the sewage suction device 150.

[0088] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0089] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0090] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A throwing device, characterized in that: It includes a first electric reel, a second electric reel, a hull and a throwing machine; The hull is arranged between the first electric reel and the second electric reel, the first electric reel and the second electric reel are connected by a guide rope, and the hull is connected to the guide rope by a traction rope; The material throwing machine is arranged on the hull, and the material throwing machine throws materials along a first direction, and the angle between the first direction and the guide rope is α, wherein 80°≤α≤100°; When the throwing machine throws materials, the throwing time of the throwing machine is T1, wherein the value range of T1 is 0.5h≤T1≤2h; The time interval of the throwing machine is T2, wherein the value range of T2 is 4h≤T2≤6h; When the hull moves, the moving distance of the hull during the material throwing time T1 is L, wherein the value range of L is 40m≤L≤60m; There are two material throwing machines, which are respectively located on both sides of the guide rope, and the throwing directions of the two material throwing machines are symmetrical with respect to the guide rope; The throwing distance of the throwing machine is X, wherein the value range of X is 1m≤X≤10m; The moving distance of the hull along the first direction is Y, where Y≥2X; A first guide rail is provided on one side of the first electric reel, the first electric reel is slidably arranged on the first guide rail, and a first driving device is provided at one end of the first guide rail, so as to drive the first electric reel to slide along the first guide rail through the first driving device; A second guide rail is provided on one side of the second electric reel, the second electric reel is slidably arranged on the second guide rail, and a second driving device is provided at one end of the second guide rail, so as to drive the second electric reel to slide along the second guide rail through the second driving device; The angle between the first guide rail and the guide rope is β, wherein the value range of β is 80°≤β≤100°; The included angle between the second guide rail and the guide rope is γ, wherein the value range of γ is 80°≤γ≤100°; A first displacement sensor is provided on a side of the first electric reel close to the hull, and the first displacement sensor is electrically connected to the first electric reel so as to detect the moving distance of the hull through the first displacement sensor; The distance from the hull to the first displacement sensor is L1, and when L1≤1m or L1≥10m, the first electric reel and the second electric reel stop running respectively; A second displacement sensor is provided on a side of the second electric reel close to the hull, and the second displacement sensor is electrically connected to the second electric reel so as to detect the moving distance of the hull through the second displacement sensor; The distance from the hull to the second displacement sensor is L2, and when L2≤1m or L2≥10m, the first electric reel and the second electric reel stop running respectively; The hull is provided with a sewage suction device, which comprises a sewage suction pump, a sewage suction pipe and a sewage suction head; One end of the sewage suction pipe is connected to the sewage suction pump, and one end of the sewage suction pipe close to the hull is rotatably connected to the hull; One end of the sewage suction pipe away from the hull is connected to the sewage suction head.

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