Modular detachable multifunctional fishing teaching demonstration frame

Abstract

This application relates to the technical field of shipwreck salvage teaching, and in particular to a modular, detachable, multifunctional salvage teaching demonstration frame, comprising: a main frame including two independent sub-frames, adjacent independent sub-frames being detachably connected by a detachable connection structure, allowing the main frame to be switched between a combined overall state and an independent split state; each independent sub-frame is provided with an independent equipment parking area for parking and simulating different salvage operation equipment to support demonstrations of multi-equipment collaborative salvage; a parking simulation area, detachably disposed in the lower middle part of the main frame, for mounting shipwreck simulation components and / or pontoons; and mounting brackets, detachably disposed on both sides of the main frame, for mounting pontoon simulation components and / or shipwrecks. This application realizes the reproduction of component configuration relationships of multiple salvage methods on the same device, significantly improving the scene adaptability and demonstration flexibility of the teaching device.

Description

Technical Field

[0001] This application relates to the technical field of shipwreck salvage teaching, and in particular to a modular, detachable, multifunctional salvage teaching demonstration frame. Background Technology

[0002] Shipwreck salvage is a core practical activity in marine engineering, underwater operations, and rescue and salvage, involving complex technical aspects such as buoyancy, structural mechanics, and multi-vessel collaborative operations. In the teaching process of related majors, students need to deeply understand the principles of different salvage methods, such as pontoon salvage, jib salvage, and lever salvage, as well as the equipment configuration and operating procedures under different modes, such as single-vessel independent operation and multi-vessel collaborative operation. Therefore, hands-on demonstrations using intuitive and interactive physical models are crucial for helping students understand abstract salvage principles and master core operational procedures.

[0003] Currently, there are several salvage demonstration devices used in physics teaching. For example, Chinese utility model patent CN205943230U discloses a "demonstration device for salvaging sunken objects using buoyancy," which uses a transparent box, a first airbag, and a second airbag to demonstrate the process of a sunken object rising by utilizing the principle that buoyancy is greater than gravity. Another Chinese utility model patent CN210443069U discloses a "demonstration device for salvaging sunken objects using buoyancy," which uses an inflatable buoyancy bag placed inside a water tank and inflates it to lift the sunken object. These existing technologies all demonstrate the process of an object rising from the bottom of the water to students intuitively by simulating the core principle of buoyancy generated by inflatable components, thus assisting in the teaching of the concept of buoyancy to some extent.

[0004] However, the aforementioned existing technologies and other teaching demonstration devices currently on the market still have significant shortcomings. First, their structures are all fixed, integrated designs with limited functionality, only capable of simulating basic buoyancy salvage scenarios for a single sunken object or a single salvage vessel. They cannot be disassembled or combined to adapt to differentiated teaching scenarios such as single-vessel or multi-vessel collaborative salvage, resulting in low coverage of teaching cases and making it difficult for students to understand the core differences between different operational modes. Second, these devices lack standardized component position adjustment structures (such as adjusting the fixed position of the sunken object and the height of the pontoon). Demonstrations of salvage operation states (such as the relative positional relationship between the pontoon and the sunken object) rely solely on verbal descriptions or fixed component positions. Students cannot intuitively perceive the actual impact of changes in component installation positions on the salvage state and force relationships through manual adjustments, resulting in severely insufficient teaching intuitiveness and student hands-on participation. Summary of the Invention

[0005] This application provides a modular, detachable, multifunctional salvage teaching demonstration frame, which can at least partially solve the above-mentioned technical problems.

[0006] This application provides a modular, detachable, multifunctional salvage teaching demonstration frame, which adopts the following technical solution: A modular, detachable, multi-functional salvage teaching demonstration frame includes: The main frame includes at least two independent sub-frames, and the adjacent independent sub-frames are detachably connected by a split connection structure, so that the main frame can be switched between a whole merged state or a separate independent state. Each of the aforementioned independent sub-frames is equipped with an independent equipment parking area for parking and simulating different salvage operation equipment, in order to support the demonstration of multi-equipment collaborative salvage. A simulated mooring area, detachably mounted below the center of the main frame, is used to install simulated shipwreck components and / or pontoons; and, The mounting brackets are detachably mounted on both sides of the main frame for mounting pontoon simulators and / or shipwrecks.

[0007] By adopting the above technical solution, this modular, detachable, multifunctional salvage teaching demonstration frame allows for the selection of the main frame's state based on teaching needs. When demonstrating single-ship salvage operations, the connecting structure is disassembled to maintain at least two independent sub-frames as a unified whole, forming a complete main frame. When demonstrating multi-ship collaborative salvage, the connecting structure is disassembled, allowing the main frame to switch to its independent split state, forming two or more independent sub-frames. Each independent sub-frame has an independent equipment parking area for parking and simulating different salvage operation equipment. For example, a model simulating a gantry crane is parked on one sub-frame, while a model simulating a floating crane or auxiliary tugboat is parked on the other sub-frame, thus supporting demonstrations of multi-equipment collaborative salvage. The simulation parking area is detachably located in the lower middle part of the main frame, where sunken ship simulation components or pontoon simulation components are installed according to the demonstration content. The mounting brackets are detachably located on both sides of the main frame, corresponding to the installation of pontoon simulation components or sunken ship simulation components to match the component configuration requirements of different salvage methods (pontoon method, gantry crane method, and pry method).

[0008] The detachable main frame structure allows the same teaching rack to cover two core teaching scenarios: single-ship salvage and multi-ship collaborative salvage, overcoming the limitation of existing technologies that can only simulate a single salvage mode. The independent equipment parking areas allow each sub-frame to independently support different operational equipment models. In the separate state, the task division and spatial layout of multiple salvage vessels can be intuitively displayed. In the combined state, the two equipment parking areas are positioned at the top of the same frame, simulating the configuration of different equipment positions on a single large salvage vessel. The detachable design of the parking simulation area and the mounting brackets allows users to flexibly interchange the installation positions of the sunken ship and pontoon simulation components according to the teaching content. For example, when demonstrating the pontoon salvage method, the sunken ship can be installed in the parking simulation area and the pontoons can be mounted on the side brackets; when demonstrating the jib method, the pontoons can be installed in the parking simulation area and the sunken ship can be mounted on the brackets. This allows for the replication of component configurations for multiple salvage methods on the same device, significantly improving the scenario adaptability and demonstration flexibility of the teaching device.

[0009] Optionally, the mounting bracket includes a crossbeam, a first connecting assembly, and a mounting assembly. The crossbeam slides vertically through the first connecting assembly and is locked onto the main frame. The mounting assembly is mounted on the crossbeam.

[0010] By adopting the above technical solution, during use, based on the target depth of the shipwreck simulator or pontoon simulator, the vertical position of the crossbeam relative to the main frame is adjusted via the first connecting assembly. After the crossbeam slides to the required height along the vertical direction of the main frame, the locking mechanism in the first connecting assembly fixes the crossbeam in that position. The mounting assembly is installed on the crossbeam to connect the shipwreck simulator or pontoon simulator. When it is necessary to change the water depth simulation state of the salvage component, the locking mechanism of the first connecting assembly is released, the crossbeam is slid back to the new vertical position, and then locked again.

[0011] By adjusting and locking the crossbeam vertically, the shipwreck simulation or pontoon simulation components mounted on the mounting bracket can be precisely, stably, and repeatedly positioned in the vertical direction of the main frame, thus simulating the deployment of salvage equipment under different water depths. Combined with the spatial layout of the simulation area located in the lower middle part of the main frame, the height adjustment of the mounting bracket allows for flexible changes in the vertical distance between the pontoon simulation and the shipwreck simulation. Students can intuitively understand the relationship between the pontoon deployment depth and the lifting force on the shipwreck by observing the relative positional relationship between components at different height differences, thus overcoming the shortcomings of existing technologies that rely solely on verbal descriptions of the influence of water depth. Simultaneously, the locking mechanism maintains the stability of the crossbeam after sliding, preventing displacement caused by component weight or accidental contact during the demonstration, ensuring the accuracy and repeatability of the teaching demonstration.

[0012] Optionally, the mounting assembly includes a connecting seat, a first locking member, a mounting base, and a mounting rod. The connecting seat is detachably connected to any installation position along the length of the crossbeam via the first locking member. The mounting base is disposed on the connecting seat and has a through hole. The mounting rod is inserted into and rotates within the through hole. The mounting base is provided with a second locking member for fixing the mounting rod.

[0013] By adopting the above technical solution, in use, the connecting seat is first installed at any position along the length of the crossbeam using the first locking member. This allows the connecting seat to move horizontally and lock on the crossbeam, achieving horizontal positioning of the mounting point. Then, the mounting rod is inserted into the through hole of the mounting base. The mounting rod can rotate freely within the through hole, thereby changing the spatial attitude of the shipwreck simulator or pontoon simulator connected to its end. Once the mounting rod has rotated to the desired angle, it is secured by the second locking member on the mounting base to prevent further rotation. The shipwreck simulator or pontoon simulator is connected to the free end of the mounting rod, and its horizontal position, vertical height, and tilt angle can be changed simultaneously through the above adjustments.

[0014] Building upon vertical position adjustment, horizontal position adjustment and the rotation angle adjustment of the mounting rod are further introduced, forming a multi-degree-of-freedom adjustment capability in three-dimensional space. The first locking component allows the connecting seat to be fixed at any position along the length of the beam, thereby simulating the deployment state of the pontoon or sunken ship at different horizontal distances (e.g., different lateral offsets from the salvage vessel), solving the problem that salvage components in existing technologies can only be fixed in a single horizontal position. The rotation function of the mounting rod within the through hole, combined with the fixation of the second locking component, allows the mounting rod to present different tilt angles, such as simulating the attitude change process of the pontoon gradually changing from vertical suspension to horizontal floating during inflation, or simulating the tilting attitude of the sunken ship during lifting. This multi-degree-of-freedom adjustment system, in conjunction with the detachable main frame and vertical sliding, enables the entire teaching frame to accurately reproduce the complex spatial positional relationship and attitude change process between the pontoon and the sunken ship in actual salvage projects. By manually adjusting the angle of the mounting rod and the horizontal position of the connecting seat, students can intuitively perceive the impact of different deployment parameters of the salvage equipment on the salvage operation state, significantly improving the interactivity of teaching and the realism of the demonstration.

[0015] Optionally, it also includes a work surface extension module, which is disposed on the side of the main frame.

[0016] By adopting the above technical solution, when demonstrating basic salvage scenarios without requiring additional working area, the working surface expansion module remains retracted, occupying no extra space, and the demonstration rack uses the basic working surface for demonstration. When demonstrating complex scenarios such as multi-pontoon collaborative salvage or multi-equipment joint lifting, the working surface expansion module is opened from the side of the main frame, forming an expanded simulated working area. On the expanded working surface, additional mounting brackets, parking simulation areas, or more pontoon simulations and shipwreck simulations can be installed, thereby demonstrating the state of multiple salvage devices working collaboratively in the working area simultaneously. Based on the provided multi-ship collaboration capability (achieved by splitting the main frame), the side expansion module provides another way to demonstrate multi-equipment collaboration—single-ship multi-pontoon or multi-equipment dense collaborative operation. The combination of the two can fully demonstrate various salvage operation forms from single-ship single-pontoon to multi-ship multi-pontoon, significantly broadening the breadth of teaching content and the richness of demonstrations. At the same time, the expansion module can be retracted when not needed, without affecting the use of the basic working surface, taking into account the adaptability of the device in different teaching scenarios and the efficiency of space utilization.

[0017] Optionally, the mounting bracket slides vertically onto the main frame.

[0018] By adopting the above technical solution, the basic function of vertical position adjustment of the mounting bracket is provided, allowing the shipwreck simulation or pontoon simulation to be fixed at different vertical heights, simulating the deployment of salvage components under different water depth conditions. This vertical sliding function allows for flexible changes in the vertical relative position between the simulation components on the mounting bracket and those in the mooring simulation area, thus visually demonstrating the impact of depth differences on salvage operations. This adjustment method directly solves the deficiency mentioned in the background technology of existing devices "lacking standardized module component position adjustment structures," enabling students to understand the concept of depth not only through verbal descriptions but also through direct observation of changes in the salvage status corresponding to different positions via physical adjustment.

[0019] Optionally, the parking simulation area is a frame-type parking structure made of metal grille railings, and the frame-type parking structure can be detachably installed at any position in the vertical direction of the main frame.

[0020] By adopting the above technical solution, the frame-type parking structure uses metal grid railings, which provides a transparent visual effect and multiple viewing angles. Students can observe the fixed posture and relative position of the shipwreck simulator or pontoon simulator in the parking area from the front, side, and oblique angles. At the same time, the grid gaps provide flexible selection of fixing points, facilitating the quick assembly, disassembly, and secure fixing of the simulator using various types of fasteners. The frame-type parking structure can be detachably installed at any position in the vertical direction of the main frame, a feature that also gives the parking simulation area itself the ability to adjust its vertical position.

[0021] The adjustable vertical position of the frame-type mooring structure complements the fixed horizontal position of the equipment mooring area, providing supplementary vertical adjustment and freeing the depth simulation of the shipwreck simulator from the limitations of fixed installation points. It accurately simulates the relative positional relationship between the pontoon and the shipwreck under different water depths in actual salvage operations, enabling a teaching demonstration of coordinated position adjustment.

[0022] Optionally, the frame-type parking structure is provided with an adjustment component, which includes a connecting block, a pin, and a spring. The connecting block is disposed on the bottom wall of the frame-type parking structure, with at least three pins disposed at corresponding corners. The pin is slidably disposed on the connecting block and is close to or away from the independent sub-frame. The spring is disposed on the connecting block and pushes the pin closer to the independent sub-frame. The independent sub-frame has multiple mounting slots along the vertical direction, and the pin is inserted into the mounting slots.

[0023] By adopting the above technical solution, during use, when the frame parking structure needs to be installed at a certain height on the independent sub-frame, the operator first manually pulls the pin away from the independent sub-frame, causing the pin to retract into the connecting block against the spring force. At this time, the front end of the pin disengages from the mounting slot on the independent sub-frame. Then, the frame parking structure is moved vertically to the target height position, aligning the pin on the connecting block with the mounting slot at that height. The pin is then released, and under the spring force, the pin automatically slides towards the independent sub-frame, inserting its front end into the mounting slot, thus locking the frame parking structure at that height. When the height needs to be adjusted again, the above steps of pulling the pin, moving the frame parking structure, aligning with the mounting slot, and releasing the pin are repeated. The setting of at least three connecting blocks ensures that all four corners of the frame parking structure are locked, preventing the frame parking structure from deflecting or shaking under force.

[0024] Existing devices typically rely on passive adjustment of buoyancy using airbags or simple bolt fastening for fixing, requiring tools and being cumbersome to adjust, hindering the rapid switching of demonstration states at different water depths during teaching. The newly adopted spring-driven pin-connected mounting slot structure eliminates the need for tools; operators can simply pull the pin to change the height of the frame-like parking structure, significantly improving the ease of adjusting the depth of the shipwreck simulator during demonstrations. Simultaneously, the spring provides constant locking force, preventing the pin from dislodging due to vibration or accidental contact after insertion into the mounting slot, ensuring the stability of the frame-like parking structure during demonstrations. The inclusion of at least three connecting blocks constrains all four corners of the frame-like parking structure, avoiding deflection issues that might occur with a single locking point, ensuring the shipwreck simulator remains horizontal at different water depths, thus improving the accuracy and repeatability of teaching demonstrations. This adjustment structure directly addresses the shortcomings pointed out in the background technology, namely, "the lack of standardized modular component position adjustment structures, and the demonstration of salvage operation status can only rely on verbal descriptions or fixed component positions." It enables students to intuitively perceive the state changes of the shipwreck simulator at different vertical positions by manually pulling and pulling the pins and moving the frame-type parking structure, thus enhancing their hands-on participation.

[0025] Optionally, the upper sidewall of the pin is chamfered.

[0026] By adopting the above technical solution, during use, when the frame-type parking structure needs to be moved from bottom to top to adjust to a higher position, the operator does not need to manually pull the pin. Simply lift the frame-type parking structure upwards, and the frame-type parking structure will move the connecting block and the pin together upwards. During the upward movement, the chamfer on the upper side wall of the pin contacts the upper edge of the mounting slot on the independent sub-frame. Because the chamfer surface is inclined, the upward thrust generates a horizontal component force on the chamfer surface. This component force pushes the pin to overcome the spring force and automatically retract away from the independent sub-frame. After the pin is completely out of the mounting slot, the frame-type parking structure can continue to move upwards until the pin aligns with the next mounting slot. Under the action of the spring force, the pin automatically inserts into the new mounting slot. When it is necessary to move the frame-type parking structure downwards, because the lower side wall of the pin is not chamfered, the pin will be stuck by the lower edge of the mounting slot and cannot retract automatically when moving downwards directly. In this case, the pin still needs to be manually pulled to move downwards.

[0027] This significantly simplifies the operation steps for frequently adjusting the depth of the shipwreck simulator during teaching demonstrations. Especially in multi-ship collaborative salvage demonstration scenarios, when it is necessary to adjust the frame-type mooring structure on two independent sub-frames simultaneously, this one-way automatic unlocking function can significantly reduce adjustment time and operational complexity. Simultaneously, because the lower side wall of the pin is not chamfered, the pin will not automatically retract when moving downwards, thus preventing the frame-type mooring structure from accidentally falling under gravity, providing a one-way anti-reverse safety protection function.

[0028] Optionally, the pin is bent, with the bent end forming a hook shape vertically downwards, and the bent end can hook onto the inner wall of the mounting groove.

[0029] By adopting the above technical solution, under the elastic force of the spring, the pin always tends to move towards the independent sub-frame, and the hook at the bent end forms a hook engagement with the inner wall of the mounting groove (e.g., the top wall or side wall of the mounting groove). During use, when the frame-type parking structure is subjected to a downward load (e.g., the gravity of the shipwreck simulator), the frame-type parking structure tends to move downward. At this time, the hook at the bent end will press against the inner wall of the mounting groove, and the hook structure prevents the pin from coming out of the mounting groove.

[0030] This enhances the structural stability of the demonstration rack during teaching demonstrations, reduces teaching interruptions caused by accidental detachment, and improves the reliability and service life of the device.

[0031] Optionally, the connecting block is rotatably mounted on the frame-type parking structure, and a locking component is provided on the connecting block, the locking component being connected to the frame-type parking structure.

[0032] By adopting the above technical solution, the frame-type parking structure can be tilted by rotating the connecting block to simulate the tilted seabed, the posture of a shipwreck on different planes of the seabed or under different conditions, thereby improving its applicability and facilitating intuitive observation and teaching.

[0033] In summary, this application includes at least one of the following beneficial technical effects: 1. The detachable main frame structure allows the same teaching rack to cover two core teaching scenarios: single-ship salvage and multi-ship collaborative salvage, overcoming the limitation of existing technologies that can only simulate a single salvage mode. The independent equipment parking area allows each sub-frame to independently support different operational equipment models. In the split state, the task division and spatial layout of multiple salvage vessels can be intuitively displayed. In the combined state, the two equipment parking areas are positioned on the top of the same frame to simulate the configuration of different equipment positions on a single large salvage vessel. The detachable design of the parking simulation area and the mounting brackets allows users to flexibly interchange the installation positions of the sunken ship simulation components and the pontoon simulation components according to the teaching content. For example, when demonstrating the pontoon salvage method, the sunken ship can be installed in the parking simulation area and the pontoons can be mounted on the two side brackets. When demonstrating the pontoon salvage method, the pontoons can be installed in the parking simulation area and the sunken ship can be mounted on the brackets. This allows the component configuration relationships of multiple salvage methods to be reproduced on the same device, significantly improving the scenario adaptability and demonstration flexibility of the teaching device. 2. By manually adjusting the angle of the mounting rod and the horizontal position of the connecting seat, students can intuitively perceive the impact of different deployment parameters of the salvage equipment on the salvage operation status, which significantly improves the interactivity of teaching and the realism of the demonstration. 3. By rotating the connecting blocks, the frame-type parking structure can be tilted to simulate an inclined seabed, simulating the posture of a shipwreck on different seabed planes or under different conditions, thus improving applicability and facilitating intuitive observation and teaching. Attached Figure Description

[0034] Figure 1 This is an overall structural diagram of the salvage teaching demonstration frame in Embodiment 1 of this application; Figure 2 This is a front view of the salvage teaching demonstration frame in Embodiment 1 of this application; Figure 3 This is a diagram illustrating the independent sub-frame in Embodiment 1 of this application; Figure 4 This is a diagram illustrating the first connecting component in Embodiment 1 of this application; Figure 5 This is a diagram illustrating the mounting component in Embodiment 1 of this application; Figure 6 This is a diagram illustrating the mounting slot in Embodiment 2 of this application; Figure 7 This is a diagram showing the positional relationship between the connecting block and the frame parking structure in Embodiment 2 of this application; Figure 8 This is a cross-sectional view of the connecting block in Embodiment 2 of this application.

[0035] Reference numerals: 100, main frame; 110, independent sub-frame; 111, adjustment hole; 112, mounting slot; 120, disassembled connection structure; 200, equipment parking area; 300, parking simulation area; 310, frame-type parking structure; 311, insertion hole; 320, hook; 330, insertion post; 400, mounting bracket; 410, crossbeam; 411, positioning hole; 420, first connecting assembly; 421 422. Mounting plate; 433. First locking pin; 434. Mounting assembly; 435. Connecting seat; 436. Mounting base; 437. Mounting rod; 438. Through hole; 439. Second locking element; 500. Working surface extension module; 510. Extension plate; 520. Second connecting assembly; 600. Adjustment assembly; 610. Connecting block; 620. Pin; 621. Chamfer; 630. Spring. Detailed Implementation

[0036] The following combination Figures 1 to 8 This application will be described in further detail.

[0037] This embodiment discloses a modular, detachable, multifunctional salvage teaching demonstration frame.

[0038] Example 1: Refer to Figures 1 to 5 This application provides a modular, detachable, multifunctional salvage teaching demonstration frame. The frame adopts a metal frame structure and mainly includes a main frame 100, an equipment parking area 200, a parking simulation area 300, and a mounting bracket 400. The main frame 100, serving as the foundational load-bearing structure of the entire demonstration frame, consists of two independent sub-frames 110. Adjacent independent sub-frames 110 are detachably connected via a split connection structure 120. Each independent sub-frame 110 has an equipment parking area 200 at its top. This parking area 200 is a flat plate with multiple auxiliary positioning holes 411 pre-drilled on its surface for parking and simulating different salvage operation equipment models. The parking simulation area 300 is located in the lower middle part of the main frame 100 and is detachably connected to the main frame 100. It is used to install shipwreck simulation components or pontoon simulation components.

[0039] Two independent sub-frames are each equipped with a mounting bracket 400, which is also detachably connected to the main frame 100 and used to mount pontoon simulators or shipwreck simulators. Through the combination and adjustment of the above components, this teaching rack can be adapted to various teaching demonstration scenarios such as single-ship salvage, multi-ship collaborative lifting and prying salvage, pontoon salvage method, and gantry method.

[0040] The specific structure and connection relationship of each component are described in detail below.

[0041] In this embodiment, the main frame 100 is welded from metal square tubing, and its overall size is adapted to the classroom teaching and display space. Two independent sub-frames 110 are arranged side by side, and a split connection structure 120 is provided on the adjacent side of the two sub-frames. The split connection structure 120 includes a buckle connecting the two adjacent sub-frames. After the buckle is engaged and locked, the two independent sub-frames 110 are fixed as a whole. When it is necessary to switch to the split state, the buckle is released, and the two independent sub-frames 110 can be separated and used independently. In the combined state, one can be placed between the two independent sub-frames 110. Each independent sub-frame 110 is also provided with a support leg at its bottom. The support leg is connected to the sub-frame by threads, and the height can be adjusted to ensure that the teaching rack remains horizontal and stable on different ground surfaces.

[0042] In other embodiments, at the locations where the buckles are set on the two independent sub-frames 110, a cover is provided, which is placed on the buckles to reduce accidental contact.

[0043] The equipment parking area 200 is a flat plate, which can be made of any material. In this embodiment, a metal plate is preferred. The upper surface of the plate is treated with an anti-slip coating, and anti-slip protrusions are provided on the edges of the plate to prevent the salvage equipment model placed on the plate from slipping off. The surface of the plate also has multiple auxiliary positioning holes 411, which are arranged in an equally spaced array. Positioning pins can be used to pass through the auxiliary positioning holes 411 and engage with the positioning holes 411 on the bottom of the equipment model, thereby firmly fixing the equipment model to a specific position on the plate. In this embodiment, the equipment parking area 200 is preferably a metal plate structure with auxiliary positioning holes 411 to facilitate quick positioning and fixing of equipment models of different sizes.

[0044] The parking simulation area 300 is configured as a frame-type parking structure 310, welded from metal grille railings, forming a rectangular frame. This frame-type parking structure 310 is detachably installed in the lower middle position of the main frame 100. Its connection to the main frame 100 is as follows: insertion holes 311 are provided at each of the four corners of the frame-type parking structure 310, and insertion posts 330 are provided on corresponding independent sub-frames 110. The insertion posts 330 engage with the insertion holes 311, and the frame-type parking structure 310 contacts the independent sub-frame 110. The engagement of the insertion posts 330 and insertion holes 311 helps reduce displacement. To increase the transparency of the parking simulation area 300 and facilitate observation from multiple angles by students, the metal grille railings inside the frame-type parking structure 310 are arranged in a crisscross pattern, with equal spacing between the grilles. Multiple hooks 320 are fixedly installed or threadedly connected to the vertical columns of the independent sub-frame 110 along the vertical direction. The end of the hook 320 facing away from the vertical column is bent and set vertically upward, which can be used to hang additional simulation parts or auxiliary tools. When it is necessary to place the frame parking structure 310 at different heights, the height of the frame parking structure 310 can be adjusted by engaging with the hooks 320 through the insertion hole 311. That is, the frame parking structure 310 can be detachably set at any position in the vertical direction of the main frame 100.

[0045] The mounting bracket 400 includes a crossbeam 410, a first connecting assembly 420, and a mounting assembly 430. The crossbeam 410 is a horizontally arranged metal rod, with its two ends connected to the left and right side columns of the independent sub-frame 110 via the first connecting assembly 420. Specifically, the first connecting assembly 420 includes a mounting plate 421 and a first locking pin 422. The mounting plate 421 is fixed to the end of the crossbeam 410 and abuts against the outer side wall of the main frame 100. The mounting plate 421 has an L-shaped cross-section, and one side wall of the mounting plate 421 passes between two hooks 320. On the side wall of the vertical column of the independent sub-frame 110, a plurality of adjustment holes 111 are provided vertically. These adjustment holes 111 are evenly arranged at equal intervals to form a row of adjustment holes 111. The mounting plate 421 has a through hole. In use, the mounting plate 421 is slid up and down along the side wall of the main frame 100 to the target height, aligning the through hole on the mounting plate 421 with the adjustment hole 111 at a certain height. Then, the first locking pin 422 is inserted. The first locking pin 422 passes through the through hole on the mounting plate 421 and inserts into the adjustment hole 111 on the side wall of the main frame 100, thereby locking the crossbeam 410 in that vertical position. When it is necessary to change the height of the crossbeam 410, the first locking pin 422 is pulled out, the crossbeam 410 is slid back to another height and aligned with the adjustment hole 111, and then the first locking pin 422 is inserted again.

[0046] The mounting assembly 430 is mounted on the crossbeam 410 and is used to directly connect to the shipwreck simulation model or the pontoon simulation model. The mounting assembly 430 includes a connecting seat 431, a first locking member 432, a mounting base 433, a mounting rod 434, and a second locking member 436. The connecting seat 431 is sleeved on the outer periphery of the crossbeam 410 and can slide horizontally along the length of the crossbeam 410. The cross-section of the connecting seat 431 is an inverted C-shape. The first locking member 432 is used to fix the connecting seat 431 to any horizontal position on the crossbeam 410. The structure of the first locking member 432 is the same as that of the first locking pin 422 mentioned above, that is, the connecting seat 431 is provided with a locking pin hole, and the crossbeam 410 is provided with a plurality of equally spaced positioning holes 411 along the length direction. When the connecting seat 431 slides to the target horizontal position, the first locking member 432 is inserted into the locking pin hole of the connecting seat 431 and into the corresponding positioning hole 411 on the crossbeam 410, thereby fixing the connecting seat 431 in the length direction of the crossbeam 410. The mounting seat 433 is fixedly installed below the connecting seat 431. The mounting seat 433 is provided with a through hole 435, the axis of which is horizontal. The hanging rod 434 is inserted into the through hole 435 and can rotate freely around its own axis within the through hole 435. One end of the mounting rod 434 is a free end, used to connect to the shipwreck simulation component or the pontoon simulation component. The other end of the mounting rod 434 is provided with a limiting protrusion to prevent the mounting rod 434 from detaching from the through hole 435. In this embodiment, the free end of the mounting rod 434 is bent upwards at an angle of thirty degrees, that is, the free end of the mounting rod 434 forms a thirty-degree angle with the horizontal direction. This bending design causes the shipwreck simulation component or the pontoon simulation component mounted on it to present a certain tilted posture, which is closer to the shape change of the pontoon during the inflation process or the tilted state when the shipwreck is lifted in an actual salvage project. The second locking member 436 is installed on the mounting base 433 and is used to fix the rotation angle of the mounting rod 434 in the through hole 435. The second locking element 436 can be a set screw, which is screwed into the mounting base 433 and abuts against the outer surface of the mounting rod 434. After tightening the set screw, the mounting rod 434 is locked and cannot be rotated. After loosening the set screw, the mounting rod 434 can rotate freely to adjust the angle.

[0047] In other embodiments, besides the method of adjusting height by vertically sliding the crossbeam 410 as described above, this embodiment also provides a simpler installation method for the mounting bracket 400, namely, the mounting bracket 400 slides directly vertically onto the main frame 100. Specifically, the main body of the mounting bracket 400 slides directly against the side wall of the main frame 100. A sliding groove is provided on the mounting bracket 400, and a guide rail is provided on the side wall of the main frame 100. The sliding groove and the guide rail cooperate to achieve vertical sliding. The mounting bracket 400 is also fixed at the target height by locking screws. This method eliminates the need for the crossbeam 410 and the first connecting assembly 420, resulting in a simpler structure.

[0048] In other embodiments, additional sensor components can be added as needed to monitor the buoy angle, the force and angle of the hoisting ropes; for example, a tension sensor can also be installed between the crossbeam 410 of the mounting bracket 400 and the connecting seat 431 of the mounting assembly 430 to measure the change in tension on the entire mounting assembly 430. As the buoy simulator gradually inflates to generate buoyancy, the value measured by the tension sensor gradually decreases. When the buoyancy is greater than the weight of the sunken ship, the tension value becomes zero or negative, clearly demonstrating the critical state of the sunken ship rising when the buoyancy is greater than the weight. To simulate and monitor the attitude changes of the buoy during inflation due to uneven buoyancy distribution, and the tilting state of the sunken ship during hoisting, this embodiment integrates an angle sensor on the mounting rod 434 or inside the buoy simulator. The angle sensor measures the tilt angle of the mounting rod 434 or the buoy simulator relative to the horizontal plane or the vertical direction, and outputs an electrical signal corresponding to the tilt angle. To accurately simulate and measure the operational status of the shipwreck simulator or pontoon simulator under different water depth conditions, this embodiment installs depth sensors on the docking simulation area 300 or the mounting bracket 400. The depth sensors measure the simulated depth of the shipwreck simulator or pontoon simulator and convert this depth into an electrical signal output. The data acquisition unit receives the electrical signals output from the tension sensor, tilt sensor, and depth sensor, performs analog-to-digital conversion and data processing, and transmits the processed data to the data display unit. The data display unit displays the data acquired by the sensors, allowing students and teachers to intuitively read the various parameters in the current demonstration state.

[0049] In this embodiment, a working surface expansion module 500 is also provided on the side of the main frame 100. The working surface expansion module 500 mainly includes an expansion plate 510 and a second connecting component 520. The second connecting component 520 is used to connect the expansion plate 510 to the side of the main frame 100 and enable the expansion plate 510 to switch between a retracted state and an extended state. In one embodiment, the second connecting component 520 is a hinge, specifically a hinge, and one side of the expansion plate 510 is hinged to the side of the main frame 100 via the hinge. When it is necessary to expand the working surface, the expansion plate 510 is flipped outward around the hinge to open, and the expansion plate 510 changes from a vertically retracted state to a horizontally extended state. In order to maintain the stability of the expansion plate 510 in the extended state, this embodiment also provides a fixing component, which is a support leg. The upper end of the support leg is hinged to the bottom surface of the expansion plate 510, and the lower end of the support leg is supported on the ground. Once the expansion plate 510 is unfolded, the support legs are rotated downwards to make it vertically supported on the ground, thus ensuring that the expansion plate 510 can withstand the weight of the additional simulation components and will not tilt downwards due to the force.

[0050] In another embodiment, the second connecting component 520 can adopt a pull-out structure. Specifically, a pull-out guide rail is provided on the side of the main frame 100, and the expansion plate 510 is installed on the pull-out guide rail. The working surface is expanded by pulling the expansion plate 510 outward, and the expansion plate 510 is locked in place by a buckle. In this embodiment, a hinged joint with a support leg is preferably used because this method is intuitive to operate and provides stable support.

[0051] In use, the user first determines the state of the main frame 100 based on the teaching demonstration content. For demonstrating single-ship salvage operations, such as a single workboat using pontoons to salvage a sunken ship, the two independent sub-frames 110 are locked together via the split-connection structure 120 to form a unified whole. In this state, the two equipment parking areas 200 are located on top of the same frame and can be used together to simulate different equipment positions on the same large salvage vessel, or only one equipment parking area 200 can be used. For demonstrating multi-ship collaborative salvage operations, such as the barge lifting and prying salvage method, the split-connection structure 120 is disassembled, separating the two independent sub-frames 110 into two independent units, each representing a different salvage vessel. The two sub-frames are then placed on the demonstration platform, maintaining an appropriate distance between them to simulate the spatial layout of two working vessels working collaboratively. Different salvage equipment models are placed on the equipment parking areas 200 at the top of each independent sub-frame 110; for example, a crane model with a boom is placed on one side, and a floating crane model with a pontoon mounting device is placed on the other side.

[0052] Next, install the docking simulation area 300 and the mounting bracket 400 as needed. Taking the demonstration of the pontoon salvage method as an example, install the frame docking structure 310 in the lower middle position of the main frame 100. Select the installation height of the frame docking structure 310 according to the required simulated shipwreck depth. For example, install the frame docking structure 310 in a lower position to simulate the shipwreck being in a deeper water layer. Then, place the shipwreck simulation component on the frame docking structure 310 and use lashing straps through the grid gaps to further secure the shipwreck simulation component. Install the mounting bracket 400 on the side of the independent sub-frames 110 that are close to each other. Slide the crossbeam 410 of the mounting bracket 400 to a height that matches the shipwreck simulation component through the first connecting assembly 420, so that the pontoon simulation component can be positioned appropriately above or to the side of the shipwreck simulation component after being mounted. Adjust the horizontal position of the mounting assembly 430 on the crossbeam 410 to a suitable position through the first locking member 432, for example, so that the pontoon simulation component is directly above the center of gravity of the shipwreck simulation component. Insert the mounting rod 434 into the through hole 435 of the mounting base 433. Rotate the mounting rod 434 as needed for the demonstration, adjusting the pointing angle of its end. For example, to simulate a float that is not yet inflated and is vertically suspended, point the end of the mounting rod 434 downwards. To simulate a float gradually rising and tilting during inflation, tilt the end of the mounting rod 434 at a certain angle. After adjustment, lock the mounting rod 434 using the second locking element 436. Connect the float simulator to the free end of the mounting rod 434. Because the free end of the mounting rod 434 has a 30-degree bending angle, the float simulator will naturally present a tilted posture, providing a more intuitive demonstration of the float's actual shape in the water.

[0053] During the teaching process, the frame-type mooring structure 310 and the mounting rod 434 can be suspended at the required position as needed to simulate the position of the sunken ship and / or pontoons during the salvage process, making it easier to observe the status of each component or rope.

[0054] To demonstrate a scenario of multi-buoy coordinated salvage, open the working surface extension module 500 on the side of the main frame 100; taking the hinge connection as an example, flip the extension plate 510 outward around the hinge to a horizontal state, and rotate the support leg downward to support it on the ground; a second mounting bracket 400 can be installed on the extension plate 510 or additional buoy simulation components can be placed directly to simulate the coordinated salvage operation state of two or more buoys acting on different parts of the sunken ship at the same time.

[0055] Throughout the demonstration, students can manually participate in adjusting various components. For example, they can manually slide the crossbeam 410 to change its height, manually adjust the horizontal position of the connecting seat 431 on the crossbeam 410, manually rotate the mounting rod 434 to change its angle, and manually insert or remove various locking parts to change their fixed positions. Through hands-on operation and observation of the relative relationships of the salvage components at different positions and angles, students can intuitively understand the spatial layout requirements of various equipment in salvage operations and the impact of component position changes on the salvage effect.

[0056] The modular, detachable, multi-functional salvage teaching demonstration frame provided in this embodiment demonstrates its beneficial effects through the aforementioned usage process. Firstly, the main frame 100 employs at least two independent sub-frames 110, connected detachably via a split connection structure 120. This allows the same teaching frame to maintain a unified state for demonstrating single-ship salvage operations, or to be disassembled and switched to a split state for demonstrating complex operations such as multi-ship collaborative lifting and salvage, overcoming the limitation of existing fixed integrated devices that cannot adapt to multi-ship collaborative demonstrations. Each independent sub-frame 110 is equipped with an independent equipment parking area 200, allowing for the parking and simulation of different salvage operation equipment in the split state, providing a clear visual representation of the spatial layout and task division of different operating vessels. The parking simulation area 300 is detachably located in the lower middle part of the main frame 100 and can be installed at any vertical position, allowing for flexible adjustment of the vertical installation position of the sunken ship simulator or buoy simulator according to water depth simulation requirements. The mounting brackets 400 are detachably mounted on both sides of the main frame 100 and can slide vertically, allowing the mounting height of the pontoon simulator or shipwreck simulator to be freely adjusted. The vertical position adjustment of the parking simulation area 300 and the vertical sliding adjustment of the mounting brackets 400 work together to precisely control the vertical relative position between the pontoon and the shipwreck. By observing the correspondence between the pontoon and the shipwreck at different vertical distances, students can intuitively understand the influence of water depth on the placement of the pontoons.

[0057] The frame-type parking structure 310 uses metal grating railings, providing excellent transparency and allowing students to observe the posture and relative positions of the simulators within the parking area from multiple angles, including the front, side, and oblique views. The grating gaps offer flexible options for fixing points, facilitating quick assembly and disassembly of the simulators using various fasteners. The bottom insertion holes 311 at the bottom of the frame-type parking structure 310 provide an additional vertical fixing method, increasing the stability of the shipwreck simulator or pontoon simulator installation.

[0058] In summary, the modular, detachable, multi-functional salvage teaching demonstration frame provided in this application, through its detachable main frame 100, independently set equipment parking area 200, height-adjustable parking simulation area 300 and mounting bracket 400, multi-degree-of-freedom adjustable mounting component 430, and expandable work surface extension module, achieves full-scenario coverage from basic single-ship salvage to complex multi-ship collaborative salvage. It provides students with an intuitive, interactive, and multi-dimensionally adjustable hands-on demonstration platform, solving the problems of single function, insufficient position adjustment capability, fixed work area, and low student participation in existing teaching devices.

[0059] Example 2: Refer to Figures 6 to 8 The difference between this embodiment and Embodiment 1 lies in the connection method between the frame parking structure 310 and the independent sub-frame 110. In Embodiment 1, the frame parking structure 310 achieves height adjustment by engaging with the hook 320 on the independent sub-frame 110 through the insertion hole 311. In this embodiment, however, an adjustment component 600 with quick locking, one-way automatic unlocking, and tilting functions is used to achieve more convenient height adjustment and tilting posture simulation.

[0060] Specifically, the frame-type parking structure 310 is a rectangular frame welded from metal grille railings. An adjustment assembly 600 is provided on the bottom wall of the frame-type parking structure 310. This adjustment assembly 600 includes a connecting block 610, a pin 620, and a spring 630. The connecting block 610 is located on the bottom wall of the frame-type parking structure 310, with one block at each of the four corners. A horizontal sliding hole is formed within the connecting block 610, and the pin 620 is slidably installed within this sliding hole, sliding towards or away from the independent sub-frame 110. The spring 630 is located within the sliding hole, with one end abutting against the inner wall of the connecting block 610 and the other end abutting against the rear end of the pin 620. The spring 630 continuously pushes the pin 620 to extend towards the independent sub-frame 110.

[0061] The independent sub-frame 110 has multiple equally spaced mounting slots 112 on its vertical columns facing the inner space. The cross-sectional shape of the mounting slots 112 matches the front end of the pin 620. The upper sidewall of the front end of the pin 620 has a chamfer 621, which allows it to automatically retract when moving upwards; the lower sidewall of the pin 620 remains straight and cannot automatically retract when moving downwards. In addition, the pin 620 is bent, with its front end bent vertically downwards to form a hook-shaped bend. This bend can extend into the mounting slot 112 and hook into the inner wall of the mounting slot 112 to prevent the pin 620 from accidentally dislodging under downward load.

[0062] The connecting block 610 is rotatably mounted on the bottom wall of the frame-type parking structure 310 via a hinge shaft. A locking assembly is provided on the connecting block 610 to lock it at a certain rotational angle relative to the frame-type parking structure 310. The locking assembly can be a damping hinge or a bolt locking structure. When a damping hinge is used, a damping washer is provided at the hinge shaft, and the angle remains unchanged after rotating the connecting block 610 due to damping force. When bolt locking is used, an arc-shaped groove is provided on the connecting block 610, and a locking bolt is provided on the frame-type parking structure 310. The bolt passes through the arc-shaped groove and is tightened to fix the angle of the connecting block 610.

[0063] The usage process of this embodiment is as follows: When the height of the frame parking structure 310 needs to be adjusted, the operator manually pulls the pin 620 to retract it, moves the frame parking structure 310 to the target height, aligns it with the mounting groove 112, and then releases the pin 620. The spring 630 automatically pushes the pin 620 into the mounting groove 112 and hooks it in place. When upward adjustment is required, the frame parking structure 310 can be lifted directly upward. The chamfer 621 on the upper side wall of the pin 620 contacts the upper edge of the mounting groove 112, generating a horizontal force that automatically overcomes the force of the spring 630 and retracts, achieving one-way, one-button quick adjustment. When adjusting downward, the pin 620 needs to be manually pulled to prevent accidental falling. When it is necessary to simulate the parking posture of a shipwreck on different inclined seabed planes, the locking assembly is released, and the two connecting blocks 610 on one side of the frame parking structure 310 are rotated at a certain angle to make the frame parking structure 310 tilt as a whole. Then, the connecting blocks 610 are fixed by the self-locking of the damping hinge or by tightening the bolts, thus simulating the posture of a shipwreck on an inclined seabed.

[0064] This embodiment, through the aforementioned adjustment component 600, enables tool-free rapid height adjustment of the frame-type parking structure 310, while also featuring upward one-way automatic unlocking, downward anti-detachment hooking, and tilt posture simulation functions, further enhancing the ease of operation, structural stability, and adaptability to teaching scenarios of the salvage teaching demonstration frame.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular, detachable, multifunctional salvage teaching demonstration frame, characterized in that, include: The main frame (100) includes at least two independent sub-frames (110), and the adjacent independent sub-frames (110) are detachably connected by a split connection structure (120), so that the main frame (100) can be switched to an overall merged state or an independent split state. Each of the independent sub-frames (110) is provided with an independent equipment parking area (200) for parking and simulating different salvage operation equipment to support the demonstration of multi-equipment collaborative salvage; A simulated mooring area (300), detachably disposed below the center of the main frame (100), is used for mounting shipwreck simulation components and / or pontoons; and, The mounting brackets (400) are detachably mounted on both sides of the main frame (100) for mounting pontoon simulators and / or shipwrecks.

2. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 1, characterized in that, The mounting bracket (400) includes a crossbeam (410), a first connecting component (420), and a mounting component (430). The crossbeam (410) slides vertically through the first connecting component (420) and is locked onto the main frame (100). The mounting component (430) is mounted on the crossbeam (410).

3. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 2, characterized in that, The mounting assembly (430) includes a connecting seat (431), a first locking member (432), a mounting seat (433), and a mounting rod (434). The connecting seat (431) is detachably connected to any installation position along the length of the crossbeam (410) via the first locking member (432). The mounting seat (433) is disposed on the connecting seat (431) and has a through hole (435). The mounting rod (434) is inserted into and rotates within the through hole (435). The mounting seat (433) is provided with a second locking member (436) for fixing the mounting rod (434).

4. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 1, characterized in that, It also includes a work surface extension module (500), which is disposed on the side of the main frame (100).

5. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 1, characterized in that, The mounting bracket (400) slides vertically onto the main frame (100).

6. The modular, detachable, multifunctional salvage teaching demonstration frame according to any one of claims 1-5, characterized in that, The parking simulation area (300) includes a frame parking structure (310), which can be detachably installed at any position in the vertical direction of the main frame (100).

7. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 6, characterized in that, An adjustment component (600) is provided on the frame-type parking structure (310). The adjustment component (600) includes a connecting block (610), a pin (620), and a spring (630). The connecting block (610) is provided on the bottom wall of the frame-type parking structure (310), and at least three are provided at corresponding corners. The pin (620) is slidably provided on the connecting block (610) and is close to or away from the independent sub-frame (110). The spring (630) is provided on the connecting block (610), and the spring (630) pushes the pin (620) closer to the independent sub-frame (110). The independent sub-frame (110) has multiple mounting slots (112) in the vertical direction, and the pin (620) is inserted into the mounting slot (112).

8. The modular, detachable, multi-functional salvage teaching demonstration frame according to claim 7, characterized in that, The upper side wall of the pin (620) is chamfered (621).

9. The modular, detachable, multifunctional salvage teaching demonstration frame according to claim 7, characterized in that, The pin (620) is bent, and the bent end is vertically downward to form a hook shape. The bent end can hook with the inner wall of the mounting groove (112).

10. The modular, detachable, multifunctional salvage teaching demonstration frame according to claim 9, characterized in that, The connecting block (610) is rotatably mounted on the frame parking structure (310), and a locking component is provided on the connecting block (610), the locking component being connected to the frame parking structure (310).

Images