Rock-throwing device

Abstract

The utility model relates to underwater operation equipment technical field, concretely points to a riprapping device, including riprapping machine body, riprapping machine body is connected with operation ship through riprapping pipeline, and riprapping machine body is controlled by riprapping operation control system, and one side of riprapping machine body is equipped with multi-angle observation mechanism, and multi-angle observation mechanism includes observation frame, and observation frame is fixed with observation control system, thruster and observation component, and cable take-up component is controlled by riprapping operation control system, and the umbilical cable of cable take-up component is connected with the observation control system of observation frame and is connected out of cable connecting frame, and observation frame is connected or is separated through wire cable locking part and observation frame butt joint, and observation component includes sounder, camera and light, one side of riprapping machine body is equipped with observation platform, and platform take-up hydraulic cylinder is arranged between observation platform and riprapping machine body, and at least one camera is arranged on observation platform, the utility model structure is ingenious, multi-angle observation, riprapping position is accurate, and operation efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of underwater operation equipment technology, specifically to a stone-throwing device. Background Technology

[0002] Underwater rock dumping, as a traditional underwater facility protection measure, has been widely used in offshore oil development. Traditional rock dumping methods, involving direct rock dumping from ships, are highly susceptible to sea conditions and make it difficult to control the dumping location. A search revealed Chinese patent CN204919564U, which discloses a deep-water rock dumping device for connecting to a rock dumping vessel. Its features include a rock detection device, a retractable first rock dumping pipe, several second rock dumping pipes, and a third rock dumping pipe. The first, second, and third rock dumping pipes are sequentially connected to form a rock dumping pipeline for dropping rocks onto a seabed pipeline. The third rockfall pipe has several water inlet holes on its side; the rockfall detection device is installed on the first end of the first rockfall pipe away from the second rockfall pipe, and the rockfall detection device includes a body, a central channel located in the middle of the body and extending through the upper and lower ends of the body, retractable manipulators located on opposite sides of the body, a propulsion mechanism located within the body, and a detection system for locating and collecting pipeline-related information and transmitting the collected information to the data processing center on the rock-throwing vessel via an umbilical cable; the first end of the first rockfall pipe passes through the central channel. The shortcomings of the above patent are: First, the deep-sea rock-throwing equipment in the aforementioned patent is located above the seabed, at a distance from the seabed. In addition, the complex seabed topography and dense vegetation increase the difficulty of observation, resulting in inaccurate landing positions of the rocks after they are thrown. Second, during the rock-throwing process, the rocks are easily affected by factors such as ocean currents and waves, causing the rocks to deviate from the expected position after they fall, which may require rework and result in low operational efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies and provide a stone-throwing device with an ingenious structure, multi-angle observation, accurate stone-throwing position, and high operating efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A stone-throwing device includes a stone-throwing body connected to a work vessel via a stone-throwing pipe. The stone-throwing body is controlled by a stone-throwing operation control system. The device is characterized by: a multi-angle observation mechanism on one side of the stone-throwing body, comprising an observation frame, a control system, a propeller, and observation components fixedly mounted on the observation frame; a cable connection frame above the observation frame; a cable locking component between the observation frame and the cable connection frame; the cable connection frame being fixedly connected to the stone-throwing body; and a cable retraction / deployment component on the cable connection frame, controlled by the stone-throwing operation control system. An umbilical cable from the cable retraction / deployment component passes through the cable connection frame and connects to the control system of the observation frame. The observation frame is connected or disconnected from the cable connection frame via the cable locking component, allowing the cable retraction / deployment component to release the umbilical cable and control its extension and retraction lengths to ensure the observation components of the observation frame are at the optimal observation angle. Simultaneously, the position of the observation frame can be adjusted via the propeller.

[0005] The cable retraction component of this utility model includes a cable roller, a drive motor, an umbilical cable, and a slip ring. The cable roller is mounted on the cable connection frame and is driven by the drive motor, which is fixed to the cable connection frame. The umbilical cable is wound around the cable roller, and a slip ring is provided on the cable roller. The lead wire of the fixed part of the slip ring is connected to the operation control system of the work vessel via a cable. The rotating part of the slip ring is fixedly connected to the cable roller, and the lead wire of the rotating part of the slip ring is fixedly connected to one end of the umbilical cable. The other end of the umbilical cable passes around the cable roller, through the cable locking component, and is connected to the observation control system of the observation frame. This allows the drive motor to drive the cable roller to rotate, precisely controlling the length of the umbilical cable's extension and retraction, ensuring that the observation frame is always in the optimal observation position.

[0006] The observation components of this invention include a sonar, a camera, and a lighting device. The sonar, camera, and lighting device are respectively fixed on the observation frame. The sonar, camera, and lighting device are respectively connected to the observation control system. The sonar scans the operation area before throwing stones to provide data support for the throwing path. During the throwing operation, the falling stones are monitored in real time. The camera is used to capture the seabed environment and the throwing scene, so that the operators can understand the throwing operation in real time.

[0007] The present invention describes an observation platform on one side of the stone-throwing machine. One end of the observation platform is hinged to the stone-throwing machine, and a platform retraction hydraulic cylinder is provided between the observation platform and the stone-throwing machine. One end of the platform retraction hydraulic cylinder is hinged to the observation platform, and the other end is hinged to the stone-throwing machine. At least one camera is provided on the observation platform, and a lighting lamp is provided on the observation platform. The camera is fixedly connected to the observation platform, or the camera is connected to the observation platform via a pan-tilt unit. The lighting lamp is fixed on the observation platform. The camera lens is positioned facing downwards from the stone-throwing machine to capture the seabed conditions below the stone-throwing machine, thereby improving the accuracy of stone-throwing positioning.

[0008] The lower end of the stone-throwing pipe of this utility model is provided with a stone-throwing opening and closing component. The stone-throwing opening and closing component includes a stone-throwing opening and closing cover and an opening and closing driving cylinder. The lower end of the stone-throwing pipe is provided with a stone-throwing opening and closing cover. One end of the stone-throwing opening and closing cover is hinged to the stone-throwing machine body. The opening and closing driving cylinder is provided on the stone-throwing opening and closing cover. One end of the opening and closing driving cylinder is hinged to the stone-throwing opening and closing cover, and the other end is hinged to the stone-throwing machine body, so as to block or open the lower end face of the stone-throwing pipe through the stone-throwing opening and closing cover.

[0009] The present invention provides a mounting bracket on one side of the stone-throwing machine body, the mounting bracket being fixedly connected to the stone-throwing machine body, and the cable connector bracket being placed on the mounting bracket and fixedly connected to the mounting bracket, so as to achieve quick installation of the cable connector bracket through the mounting bracket.

[0010] This utility model, due to the above-mentioned structure, has the advantages of ingenious structure, multi-angle observation, accurate stone throwing position, and high work efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is an enlarged view of the stone-throwing machine body in this utility model.

[0013] Figure 3 This is a schematic diagram showing the separation of the multi-angle observation mechanism from the trebuchet body in this utility model.

[0014] Figure 4 This is a schematic diagram of the stone-throwing opening and closing component in this utility model for opening the stone.

[0015] Figure 5 This is an enlarged schematic diagram of the multi-angle observation mechanism in this utility model.

[0016] Figure 6 This is a utility model Figure 5 Enlarged view of the central observation component.

[0017] Reference numerals: 1. Rock-throwing machine body; 2. Rock-throwing pipe; 3. Working boat; 4. Multi-angle observation mechanism; 5. Observation frame; 6. Propeller; 7. Observation component; 8. Cable connection frame; 9. Cable locking component; 10. Cable winding and unwinding component; 11. Umbilical cable; 12. Cable roller; 13. Observation platform; 14. Platform winding and unwinding hydraulic cylinder; 15. Camera; 16. Rock-throwing opening and closing component; 17. Rock-throwing opening and closing cover; 18. Opening and closing drive cylinder. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] A stone-throwing device includes a stone-throwing body 1, which is connected to a workboat 3 via a stone-throwing pipe 2. The stone-throwing body 1 is controlled by a stone-throwing operation control system mounted on the workboat 3. The device is characterized in that: a multi-angle observation mechanism 4 is provided on one side of the stone-throwing body 1; the multi-angle observation mechanism 4 includes an observation frame 5; an observation control system, a propeller 6, and observation components 7 are fixedly mounted on the observation frame 5; a cable connection frame 8 is provided above the observation frame 5; a cable locking component 9 is provided between the observation frame 5 and the cable connection frame 8; and the cable connection frame 8 is fixedly connected to the stone-throwing body 1. The cable connection frame 8 is equipped with a cable retraction component 10, which is controlled by the rock-throwing operation control system. The umbilical cable 11 of the cable retraction component 10 passes through the cable connection frame 8 and connects to the observation control system of the observation frame 5. The observation frame 5 is connected to or separated from the cable connection frame 8 via a cable locking component 9, which is controlled by the rock-throwing operation control system. This allows the cable retraction component to release the umbilical cable and control the length of the cable's release and retraction, ensuring that the observation components of the observation frame are at the optimal observation angle. At the same time, the position of the observation frame can be adjusted by a thruster.

[0020] The cable retraction component 10 of this utility model includes a cable drum 12, a drive motor, an umbilical cable 11, and a slip ring. The cable drum 12 is mounted on the cable connecting frame 8 and is driven by the drive motor, which is fixed to the cable connecting frame 8. The umbilical cable 11 is wound around the cable drum 12. The cable drum 12 is equipped with a slip ring. The lead wire of the fixed part of the slip ring is connected to the operation control system of the work vessel 3 via a cable. The rotating part of the slip ring is fixedly connected to the cable drum 12. The lead wire of the rotating part of the slip ring is fixedly connected to one end of the umbilical cable 11. The other end of the umbilical cable 11 passes around the cable drum 12, passes through the cable locking component 9, and is connected to the observation control system of the observation frame 5. The umbilical cable 11 is fixedly connected to the observation frame 5 so that the cable drum can be driven to rotate by the drive motor, and the length of the umbilical cable being released and retracted can be precisely controlled to ensure that the observation frame is always in the optimal observation position.

[0021] As attached Figure 5 and attached Figure 6 The observation component 7 of this utility model includes a sonar, a camera, and a lighting lamp. The sonar, camera, and lighting lamp are respectively fixed on the observation frame 5. The sonar, camera, and lighting lamp are respectively connected to the observation control system to scan the operation area before throwing stones, providing data support for the stone throwing path. During the stone throwing operation, the falling stones are monitored in real time. The camera is used to capture the seabed environment and the stone throwing scene, so that the operators can understand the stone throwing operation in real time.

[0022] The present invention describes a stone-throwing machine 1 with an observation platform 13 on one side. One end of the observation platform 13 is hinged to the stone-throwing machine 1. A platform retraction hydraulic cylinder 14 is provided between the observation platform 13 and the stone-throwing machine 1. One end of the platform retraction hydraulic cylinder 14 is hinged to the observation platform 13, and the other end is hinged to the stone-throwing machine 1. At least one camera 15 is provided on the observation platform 13. A lighting lamp is provided on the observation platform 13. The camera 15 is fixedly connected to the observation platform 13, or the camera 15 is connected to the observation platform 13 via a pan-tilt unit. The lighting lamp is fixed on the observation platform 13. The camera of the camera 15 is positioned facing downwards from the stone-throwing machine 1 to capture the seabed conditions below the stone-throwing machine, thereby improving the accuracy of stone-throwing positioning.

[0023] The lower end of the stone-throwing pipe 2 of this utility model is provided with a stone-throwing opening and closing component 16. The stone-throwing opening and closing component 16 includes a stone-throwing opening and closing cover 17 and an opening and closing driving cylinder 18. The lower end of the stone-throwing pipe 2 is provided with a stone-throwing opening and closing cover 17. One end of the stone-throwing opening and closing cover 17 is hinged to the stone-throwing machine body 1, and the other end is provided with an opening and closing driving cylinder 18. One end of the opening and closing driving cylinder 18 is hinged to the stone-throwing opening and closing cover 17, and the other end is hinged to the stone-throwing machine body 1, so as to block or open the lower end face of the stone-throwing pipe through the stone-throwing opening and closing cover.

[0024] The present invention provides a mounting bracket on one side of the stone-throwing machine body 1, the mounting bracket being fixedly connected to the stone-throwing machine body 1, and the cable connector 8 being placed on the mounting bracket and fixedly connected to the mounting bracket, so as to achieve quick installation of the cable connector 8 through the mounting bracket.

[0025] As attached Figure 1-6 The working boat and rock-throwing pipe in this utility model adopt existing technology, such as the rock-throwing boat and rock-throwing pipe in CN204919564U in the background art of this application. The structure of the rock-throwing pipe, the connection structure between the rock-throwing pipe and the working boat, and the operation of placing the rock-throwing pipe and rock-throwing machine in the working area, the placement of the rock-throwing pipe and rock-throwing machine in the water, and the recovery of the rock-throwing pipe and rock-throwing machine after the rock-throwing is completed are all the same as the existing technology, and will not be described in detail here. A rock-dropping pipeline can be formed by connecting multiple sections of rock-dropping pipes to create a pipeline for rock dropping. The entire rock-dropping pipeline is flexible and can swing within a certain range. The rock-dropping pipeline includes three sections: the first section is connected to the rock-dropping machine body, the third section is connected to the workboat, and the second section includes a pipe body with matching connecting parts at both ends. These connecting parts connect the first pipe body of the adjacent first section and the third section. The first section includes a first pipe body and a second pipe body movably fitted onto the first pipe body along its axial direction. The second pipe body is fixedly connected to the rock-dropping machine body and passes through the machine body to form a rock-dropping opening. The rock-dropping opening is equipped with two opposing opening and closing covers 17, which are driven by an opening and closing drive cylinder 18. When the covers 17 are closed, they block the rock-dropping opening; when rock dropping is needed, the covers 17 are opened. The rock-throwing operation control system controls various devices on the rock-throwing machine body 1 via cables. The control system utilizes an existing PLC control system and can be fixed to the hull or handheld, depending on requirements. The cables can be installed on the side wall of the rock-throwing pipe, ensuring sufficient length to prevent stretching as the pipe extends. The lower end of the cable can be split into multiple branches via a junction box for connecting various devices on the rock-throwing machine body 1. Alternatively, other existing methods can be used, selected according to specific needs. The rock-throwing machine 1 is equipped with existing equipment such as a propeller, pressure compensator, and hydraulic system, facilitating its use in deep sea. Equipment on the rock-throwing machine 1, such as the propeller, hydraulic system, camera 15, lighting, and platform deployment / retraction hydraulic cylinder 14, are all connected to the operation and control system of the work vessel 3 via cables. As attached Figure 2 and attached Figure 4 The trebuchet body 1 has an observation platform 13 on one side and a multi-angle observation mechanism 4 on the other side. Two sets of cameras 15 can be mounted on the observation platform 13. One set of cameras 15 is fixed to the observation platform 13 via a pan-tilt unit, allowing the camera to rotate and adjust its shooting angle. The other set of cameras is fixed to the observation platform 13 for taking photos at a fixed angle. The observation platform is frame-like or transparent, with the camera heads facing the seabed. A lighting fixture can also be installed on the observation platform 13, also facing the seabed, to provide illumination for the cameras. The observation platform 13 is driven by a platform retraction hydraulic cylinder 14. Before use, the observation platform 13 is leveled using the platform retraction hydraulic cylinder 14. (See attached diagram.) Figure 4 As shown, the camera 15 can clearly and without blind spots capture the seabed situation below and transmit the information to the operating system of the work vessel 3, so that the rock-throwing machine 1 can accurately locate the work area, and the work vessel 3 can move the rock-throwing machine 1 to the designated work area. On the other side of the rock-throwing machine body 1, a cable connection frame 8 is provided. A cable winding and unwinding component 10 is installed on the cable connection frame 8. A cable drum 12 can be fixed to a cable drum shaft. The cable drum shaft is fixedly connected to the cable connection frame 8 via bearings. A slip ring is installed on the cable drum 12 or the cable drum shaft. The rotating part of the slip ring is fixedly connected to the cable drum 12 or the cable drum shaft. The lead wire of the fixed part of the slip ring is connected to the rock-throwing operation control system via a cable. The lead wire of the rotating part of the slip ring is fixedly connected to one end of an umbilical cable 11 and fixed to the cable drum 12. The umbilical cable 11 is wound around the cable drum 12. The other end of the umbilical cable 11 is connected to the control system of the observation frame 5. The cable locking component in this utility model can adopt the structure of the cable locking device in the utility model application filed by the applicant on August 9, 2022, with publication number CN217801822U and titled "Cable Locking Device". In use, the cable connecting sleeve in CN217801822U is fixed to the upper end of the observation frame 5, and the locking frame is fixed to the cable connecting frame 8. All components on the locking frame are controlled by the rock-throwing operation control system via cables. The umbilical cable 11 is the cable in CN217801822U. The umbilical cable passes through the cable channel and the cable connecting sleeve and connects to the control system of the observation frame 5. The umbilical cable is fixedly connected to the cable connecting sleeve. Thus, the cable locking device enables the retrieval and release of the observation frame 5. Specific operating steps are as described in CN217801822U and will not be repeated here. See attached... Figure 5 and attached Figure 6 The observation frame 5 is equipped with a thruster 6 and observation components 7, allowing the observation frame 5 to freely adjust its attitude and position underwater after being released via the umbilical cable 11, as shown in the attached figure. Figure 6 , attached Figure 6 yes Figure 5 The enlarged view along the arrow indicates the observation component 7, which includes a lighting unit, a camera, and a sonar. Lighting units can be installed at both the top and bottom of the observation frame 5. The sonar and camera can be mounted on a pan-tilt unit, allowing the angles of the sonar and camera to be adjusted so that the observation component 7 can effectively scan and take pictures. Both the thruster 6 and the observation component 7 are connected to the control system on the observation frame 5. The control system on the observation frame 5 can be a PLC control system. In its initial state, as shown in the attached document Figure 2 As shown, the rock-throwing cover 17 is closed, blocking the lower end of the rock-throwing pipe 2, the observation platform 13 is in the retracted state, and the observation frame 5 and the cable connection frame 8 are locked. Before use, the stones are loaded onto the work vessel 3. The work vessel 3, carrying the stone-throwing machine 1, moves to the vicinity of the stone-throwing operation. The stone-throwing pipe 2 and the stone-throwing machine 1 are then placed into the seawater. After the rock-throwing machine 1 enters the seabed, the hydraulic cylinder 14 of the drive platform opens the observation platform 13, as shown in the attached diagram. Figure 4As shown, after the observation platform 13 is leveled, the pan-tilt unit, camera 15, and lighting are activated. The observation platform has a frame structure with a through hole in the middle, allowing the camera 15 to pass through and face the seabed, enabling clear and unobstructed capture of the seabed conditions below. This allows the rock-throwing machine 1 to be precisely positioned in the work area. The rock-throwing machine 1 can be moved by the work vessel 3 or moved to the work area by its own propeller. Then, the rock-throwing operation control system activates the drive motors of the cable locking component 9 and the cable drum 12. The observation frame 5 moves away from the cable connection frame 8 under the action of its own propeller 6, as shown in the attached diagram. Figure 3 As shown, the observation frame 5 is located between the rock-throwing machine 1 and the seabed, allowing for side observation of the rock's azimuth and angle. The observation frame 5 can move freely within the extended length of the umbilical cable 11 via the thruster 6, enabling multi-angle observation of the rock's azimuth, angle, and seabed environment. This information is transmitted back to the rock-throwing operation control system, allowing the work vessel 3 to more accurately determine the rock-throwing location. Once the location is suitable, to prevent damage to the gimbal, camera 15, and lighting on the observation platform 13 due to rock impact or other unexpected factors during the rock-throwing operation, the telescopic rod of the platform's retraction hydraulic cylinder 14 is retracted, thus retracting the observation platform 13. (See attached diagram.) Figure 3 As shown, the opening and closing drive cylinder 18 is activated, opening the rock-throwing opening and closing cover 17. Rocks are then tilted down through the rock-throwing pipe 2, falling towards the target area on the seabed. During the rock-throwing operation, the observation frame 5 collects information about the falling rocks via sonar and cameras, allowing the work vessel to monitor the rock-throwing situation in real time. If the rock-throwing position is incorrect, the feeding of rocks into the rock-throwing pipe 2 is stopped, thus halting the rock-throwing operation. The work vessel can move, and the rock-throwing machine 1 can be moved by its own propeller to adjust its position. Once the rock-throwing position is accurately adjusted, rock-throwing can be resumed. Alternatively, during the rock-throwing operation, the rocks to be thrown can be... The stones are thrown into the stone-throwing pipe 2 in multiple batches. After each batch of stones is thrown out of the stone-throwing pipe 2, the observation component 7 of the observation frame 5 transmits the data on the falling stones in a timely manner so that the operators can understand whether the stone-throwing position is accurate and adjust the position of the stone-throwing machine 1 in time. After the stone-throwing is completed, the work boat 3 drives the drive motor of the cable locking component 9 and the cable drum 12 to retract the observation frame 5. The observation frame 5 is connected to the cable connection frame 8. The opening and closing drive cylinder 18 closes the stone-throwing opening and closing cover 17. Then the work boat 3 retracts the stone-throwing pipe 2 and the stone-throwing machine 1 to complete the stone-throwing operation. Compared with the prior art, this utility model is equipped with a multi-angle observation mechanism 4 and an observation frame 5 that can move freely relative to the stone-throwing machine body 1. The stone-throwing machine body 1 is closer to the stone-throwing operation area. The seabed operation area and the falling rocks can be observed from multiple angles and directions from the sides of the stone-throwing machine body 1 and the seabed operation area, thereby improving the positioning accuracy of the stone-throwing operation area, timely correcting the throwing position, and improving the efficiency of stone-throwing operation.

[0026] This utility model, due to the above-mentioned structure, has the advantages of ingenious structure, multi-angle observation, accurate stone throwing position, and high work efficiency.

Claims

1. A stone-throwing device, comprising a stone-throwing machine body (1), wherein the stone-throwing machine body (1) is connected to a work vessel (3) via a stone-throwing pipe (2), and the stone-throwing machine body (1) is controlled by a stone-throwing operation control system, characterized in that: The stone-throwing machine (1) is provided with a multi-angle observation mechanism (4) on one side. The multi-angle observation mechanism (4) includes an observation frame (5). The observation frame (5) is fixedly provided with an observation control system, a propeller (6) and an observation component (7). The observation frame (5) is provided with a cable connection frame (8) above it. The observation frame (5) and the cable connection frame (8) are provided with a cable locking component (9). The cable connection frame (8) is fixedly connected to the stone-throwing machine (1). The cable connection frame (8) is provided with a cable winding and unwinding component (10). The cable winding and unwinding component (10) is controlled by the stone-throwing operation control system. The umbilical cable (11) of the cable winding and unwinding component (10) passes through the cable connection frame (8) and is connected to the observation control system of the observation frame (5). The observation frame (5) is connected or separated from the cable connection frame (8) via the cable locking component (9).

2. The stone-throwing device according to claim 1, characterized in that: The cable winding and unwinding component (10) includes a cable drum (12), a drive motor, an umbilical cable (11), and a slip ring. The cable drum (12) is provided on the cable connecting frame (8). The cable drum (12) is driven by the drive motor, which is fixed on the cable connecting frame (8). The umbilical cable (11) is wound on the cable drum (12). The slip ring is provided on the cable drum (12). The lead wire of the fixed part of the slip ring is connected to the operation control system of the work vessel (3) via a cable. The rotating part of the slip ring is fixedly connected to the cable drum (12). The lead wire of the rotating part of the slip ring is fixedly connected to one end of the umbilical cable (11). The other end of the umbilical cable (11) passes around the cable drum (12), passes through the cable locking component (9), and is connected to the observation control system of the observation frame (5).

3. A stone-throwing device according to claim 1 or 2, characterized in that: The observation component (7) includes a sonar, a camera and a lighting lamp. The sonar, camera and lighting lamp are fixed on the observation frame (5) and are connected to the observation control system.

4. A stone-throwing device according to claim 3, characterized in that: An observation platform (13) is provided on one side of the trebuchet body (1). One end of the observation platform (13) is hinged to the trebuchet body (1). A platform retraction hydraulic cylinder (14) is provided between the observation platform (13) and the trebuchet body (1). One end of the platform retraction hydraulic cylinder (14) is hinged to the observation platform (13), and the other end is hinged to the trebuchet body (1). At least one camera (15) is provided on the observation platform (13). A lighting lamp is provided on the observation platform (13). The camera (15) is fixedly connected to the observation platform (13), or the camera (15) is connected to the observation platform (13) via a pan-tilt unit. The lighting lamp is fixed on the observation platform (13). The camera of the camera (15) is set facing downwards from the trebuchet body (1).

5. A stone-throwing device according to claim 1, 2, or 4, characterized in that: The lower end of the stone-throwing pipe (2) is provided with a stone-throwing opening and closing component (16). The stone-throwing opening and closing component (16) includes a stone-throwing opening and closing cover (17) and an opening and closing drive cylinder (18). The lower end of the stone-throwing pipe (2) is provided with a stone-throwing opening and closing cover (17). One end of the stone-throwing opening and closing cover (17) is hinged to the stone-throwing machine body (1). The stone-throwing opening and closing cover (17) is provided with an opening and closing drive cylinder (18). One end of the opening and closing drive cylinder (18) is hinged to the stone-throwing opening and closing cover (17), and the other end is hinged to the stone-throwing machine body (1).

6. A stone-throwing device according to claim 1, 2, or 4, characterized in that: The stone-throwing machine body (1) is provided with a mounting bracket on one side. The mounting bracket is fixedly connected to the stone-throwing machine body (1). The cable connector (8) rests on the mounting bracket and is fixedly connected to the mounting bracket.

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