A node and rope matching mechanism for ocean exploration

Abstract

The application relates to the technical field of ocean exploration, in particular to a node and rope matching mechanism for ocean exploration, which comprises a base and a unwinding device, a belt conveyor belt and a pushing mechanism are arranged at the top of the base, a slide groove is arranged at the top of the base, a supporting block is slidably connected to the slide groove, a supporting platform is arranged on one side of the slide groove, a track trolley is arranged at the top of the supporting platform through a first driving assembly, an arc-shaped track which is slidably connected to the track trolley is arranged between the first driving assembly and the slide groove, and a push rod and a push rope seat plate are fixedly arranged on one side of the track trolley close to the supporting block. The whole connection process does not need manual intervention, realizes automatic connection in the "clamping and clamping" mode, the staff does not need to manually align the hanging ring and fix the rope, only needs to open the rope sleeve through a tool when the node is recycled, the labor intensity of the staff is obviously reduced, and the application is especially suitable for the batch node connection scene and greatly improves the operation efficiency.

Description

Technical Field

[0001] This application relates to the field of marine exploration technology, and in particular to a node and rope matching mechanism for marine exploration. Background Technology

[0002] In the field of marine exploration, such as marine hydrological observation and geological exploration, it is often necessary to lower exploration nodes (such as sensors and data acquisition devices) to designated locations in the sea via ropes, and then retrieve the nodes after completing the exploration task. This is a fundamental guarantee for promoting the development of marine scientific research, marine resource development, and marine security in a deeper, broader, and more precise direction.

[0003] Currently, traditional methods of connecting nodes and ropes typically rely on manual operation. Workers need to manually thread the rope through the node's loop or use simple clips to secure it, ensuring a firm connection. In scenarios requiring the deployment of multiple nodes, manually aligning, threading, and securing the ropes one by one is time-consuming, severely restricting overall operational efficiency and imposing a heavy physical burden on workers. There is a lack of a fully automated solution that can achieve automatic connection of nodes from material loading and positioning to automatic rope engagement. Too many manual interventions make it difficult to match the automation and intelligent development trend of modern marine exploration platforms. Furthermore, after node retrieval, the rope surface will be covered with impurities such as seaweed and silt. Existing cleaning methods are mostly separate, subsequent cleaning steps, or only have simple scraping functions, resulting in incomplete cleaning, easy re-attachment of impurities, and failure to dry in time, leading to rope mold and corrosion. This increases additional maintenance costs and workload, thus making the equipment impractical. Summary of the Invention

[0004] The purpose of this application is to provide a node and rope matching mechanism for marine exploration, so as to solve the problem of low connection efficiency of nodes and ropes mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a node and rope matching mechanism for marine exploration, comprising a base and a unwinding device, the output end of which is connected to a nylon rope; a belt conveyor and a pushing mechanism are provided on the top of the base, with the pushing mechanism located at the output end of the belt conveyor; multiple rope clamps for supporting nodes are arranged on the belt conveyor; a slide groove is provided on the top of the base, and a support block is slidably connected to the slide groove; a support platform is provided on one side of the slide groove; a track trolley is mounted on the top of the support platform via a first drive assembly; an arc-shaped track slidably connected to the track trolley is provided between the first drive assembly and the slide groove; a push rod and a rope-pushing seat plate are fixedly installed on the side of the track trolley near the support block; a fixing frame is mounted on the top of the base via a second drive assembly, and a cleaning mechanism and a clamping assembly are provided on the fixing frame.

[0006] Preferably, the support block is provided with a liftable telescopic plate inside, which is used to limit the rope clamps on the support block.

[0007] Preferably, the first drive assembly includes a first lead screw rotatably connected to the top of the support platform, the first lead screw being threadedly connected to a sliding block, and the bottom of the sliding block being slidably connected to the support platform. The track trolley is fixedly connected to the sliding block via an automatic telescopic rod.

[0008] Preferably, the second drive assembly includes a second lead screw rotatably connected to the top of the base, a rotating platform threadedly connected to the outer wall of the second lead screw, and the bottom of the rotating platform slidably connected to the base. A hydraulic push rod is fixedly installed on the top of the rotating platform, and an electric telescopic rod is fixedly installed at the output end of the hydraulic push rod. The telescopic end of the electric telescopic rod is fixedly connected to the fixed frame.

[0009] Preferably, the clamping assembly includes a first arc-shaped block fixedly mounted on a fixed frame, a second motor fixedly mounted on the top of the fixed frame, a second arc-shaped block fixedly mounted on the output end of the second motor, and the second arc-shaped block is located above the first arc-shaped block.

[0010] Preferably, an arc-shaped shell is fixedly installed inside both the first and second arc-shaped blocks, and an arc-shaped rotating block is rotatably connected inside each arc-shaped shell. A cleaning brush and a sponge are fixedly installed on the inner ring of the arc-shaped rotating block. A first motor is fixedly installed inside the first arc-shaped block, and a gear is fixedly installed at the output end of the first motor. The gear meshes with the gear teeth on the outer wall of the arc-shaped rotating block. A through hole is opened on the cleaning brush. A channel is provided inside the arc-shaped rotating block. A through groove is opened on the outer wall of the arc-shaped shell, which communicates with the channel inside the arc-shaped rotating block. A dust collection device is connected to the outside of the through groove.

[0011] In summary, the beneficial technical effects of this application are as follows:

[0012] 1. This application describes a process from conveyor belt transporting a rope ferrule with nodes, to a pushing mechanism pushing it to a support block, and then a track trolley automatically pushing the nylon rope into the buckle of the rope ferrule via a rope-pushing seat plate. The entire connection process requires no manual intervention, achieving an automatic "clamp-and-snap" connection. There is no need for workers to manually align the hanging ring or fix the rope. The rope ferrule only needs to be opened with a tool when the node is retrieved, which significantly reduces the labor intensity of personnel. It is especially suitable for batch node connection scenarios and greatly improves work efficiency.

[0013] 2. This application uses a second drive component to drive the first and second arc-shaped blocks, first keeping the nylon rope horizontal to prevent excessive wear between the nylon rope and equipment components, or to prevent it from deviating from the preset track. Then, it moves in the same direction as the rope clamp, and adjusts the position of the nylon rope synchronously when the rope pusher plate pushes the rope to ensure that the buckle accurately clamps the rope. The liftable telescopic plate on the support block can limit the rope clamp to prevent it from shifting during movement, further ensuring the connection alignment accuracy. When the track trolley moves along the arc-shaped track, the distance between the rope pusher plate and the buckle is "close first and then far," which ensures that the rope can be smoothly pushed into the buckle and can automatically move away after clamping, avoiding interference with the buckle and reducing the risk of connection failure or rope detachment.

[0014] 3. When the nylon rope is wound up, the upper and lower arc-shaped shells first push the nylon rope, causing most of the weeds and mud to fall off to the slope, reducing the subsequent cleaning load; the first motor drives the gear to rotate the arc-shaped rotating block, and the cleaning brush inside rotates and scrubs the rope to remove small grass clippings and mud, ensuring the surface is clean; after scrubbing, the sponge absorbs excess water on the surface of the rope to prevent mold and corrosion caused by residual water after winding, and further cleans fine impurities. At the same time, the through hole of the cleaning brush, the internal channel of the arc-shaped rotating block and the through groove of the arc-shaped shell form a waste collection channel. The impurities brushed off are directly sucked away by the vacuum device, which not only prevents impurities from re-attaching to the rope, but also keeps the working environment clean and reduces the amount of subsequent cleaning work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a node and rope matching mechanism for marine exploration proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the track trolley and support block structure of a node and rope matching mechanism for marine exploration proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the first and second arc-shaped blocks of a node and rope matching mechanism for marine exploration proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the fixing frame and the second arc-shaped block structure of a node and rope matching mechanism for marine exploration proposed in this utility model;

[0019] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0020] Reference numerals: 1. Belt conveyor, 2. Unwinding device, 3. Pushing mechanism, 4. Track trolley, 5. Rope ferrule, 6. Nylon rope, 7. Sliding block, 8. First lead screw, 9. Arc-shaped track, 10. Support platform, 11. Slide groove, 12. Rope pusher plate, 13. Second lead screw, 14. Rotating platform, 15. Hydraulic push rod, 16. Electric telescopic rod, 17. Fixing frame, 18. Support block, 19. Telescopic plate, 20. First arc-shaped block, 21. Arc-shaped shell, 22. Arc-shaped rotating block, 23. Cleaning brush, 24. Sponge, 25. Gear, 26. First motor, 27. Second arc-shaped block, 28. Second motor, 29. Through groove. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0023] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0024] In this application, "multiple" means two or more (including two).

[0025] The following is combined with Figures 1 to 5 A marine exploration node and rope assembly mechanism according to an embodiment of this application is described in detail.

[0026] A node and rope matching mechanism for marine exploration includes a base and an unwinding device 2. A belt conveyor 1 and a pushing mechanism 3 (this is prior art and will not be described in detail here) are provided on the top of the base. The pushing mechanism 3 is located at the output end of the belt conveyor 1. A nylon rope 6 is connected to the output end of the unwinding device 2. Multiple rope ferrules 5 are arranged on the belt conveyor 1. The rope ferrules 5 are used to carry the node. A slide groove 11 is provided on the top of the base. A support block 18 is slidably connected to the slide groove 11. A liftable telescopic plate 19 is provided inside the support block 18. The node is placed inside the rope ferrule 5 and the two are fixed with bolts. The belt conveyor 1 transports the rope ferrule 5 with the node to the pushing mechanism 3. The pushing mechanism 3 is activated to push the rope ferrule 5 onto the support block 18. Then the telescopic plate 19 rises to limit the rope ferrule 5.

[0027] Support platforms 10 and second drive components are respectively provided on both sides of the slide groove 11. A first drive component is provided on the top of the support platform 10. A rope pushing mechanism is provided between the first drive component and the slide groove 11. The first drive component includes a first lead screw 8 rotatably connected to the top of the support platform 10. A sliding block 7 is threadedly connected to the first lead screw 8. The bottom of the sliding block 7 is slidably connected to the support platform 10. The rope pushing mechanism includes a track trolley 4. The track trolley 4 is fixedly connected to the sliding block 7 through an automatic telescopic rod. An arc-shaped track 9 is provided between the first drive component and the slide groove 11. The track trolley 4 is slidably connected to the arc-shaped track 9. A push rod and a rope pushing seat plate 12 are fixedly installed on the side of the track trolley 4 near the support block 18. When the first lead screw 8 is activated, the sliding block 7... The automatic telescopic rod drives the track trolley 4 to move. The track trolley 4 pushes the support block 18 through the push rod to move the node. When the track trolley 4 moves along the arc track 9, the distance between the push rope seat plate 12 and the buckle on the rope clamp 5 is first closer and then farther. The push rope seat plate 12 pushes the nylon rope 6 into the buckle on the rope clamp 5. After the buckle locks the nylon rope 6, the push rope seat plate 12 moves away from the buckle under the guidance of the track trolley 4. Through the track trolley 4 and the push rope seat plate 12, the nylon rope 6 is pushed into the buckle of the accompanying rope clamp 5, realizing the connection between the node and the nylon rope 6. This changes the connection method between the node and the rope from the original manual hanging method to an automatic clamping and clipping method, thus greatly reducing the labor intensity of personnel and improving the efficiency of the connection between the node and the rope.

[0028] The second drive assembly includes a second lead screw 13 rotatably connected to the top of the base. A rotating platform 14 is threadedly connected to the outer wall of the second lead screw 13. The bottom of the rotating platform 14 is slidably connected to the base. A hydraulic push rod 15 is fixedly installed on the top of the rotating platform 14. An electric telescopic rod 16 is fixedly installed at the output end of the hydraulic push rod 15. A fixing frame 17 is fixedly installed at the telescopic end of the electric telescopic rod 16. A first arc-shaped block 20 is fixedly installed on the fixing frame 17. A second motor 28 is fixedly installed on the top of the fixing frame 17. A second arc-shaped block 27 is fixedly installed at the output end of the second motor 28. The second arc-shaped block 27 is located above the first arc-shaped block 20 and forms a clamping structure with it. In the initial state, the first arc-shaped block 20 and the second arc-shaped block 27 are located at the end of the slide groove 11 and clamp the nylon rope 6, keeping the nylon rope 6 in a horizontal state. Before the node starts to move, the clamping is released and the movement is started. The second lead screw 13 drives the fixing frame 17 to approach the rope clamp 5. When it approaches the node, it clamps the nylon rope 6 again. Then, the fixing frame 17 and the rope clamp 5 move in the same direction. During the movement of the rope clamp 5, when the nylon rope 6 is pushed into the buckle on the rope clamp 5 by the pusher plate 12, the electric telescopic rod 16 can retract. At this time, the first arc block 20 and the second arc block 27 will drive the nylon rope 6 to move, further ensuring that the nylon rope 6 is successfully connected to the rope clamp 5. Then, the first arc block 20 and the second arc block 27 release the clamp on the nylon rope 6 and move away from the nylon rope 6 with the cooperation of the rotating platform 14 and the electric telescopic rod 16 to avoid blocking the node from being lowered. The position of the fixing frame 17 is adjusted by the second lead screw 13, the hydraulic push rod 15, and the electric telescopic rod 16 so that the first arc block 20 and the second arc block 27 bypass the lowered node and continue to clamp the nylon rope 6.

[0029] When it is necessary to retrieve the lowered node, the nylon rope 6 is wound up using the unwinding device 2. A ramp is provided at the end of the slide groove 11 away from the unwinding device 2. The node is pulled up onto the ramp, and the worker uses tools to open the rope clamp 5 and remove the node. At this time, the first arc-shaped block 20 and the second arc-shaped block 27 are still located at the end of the slide groove 11. The unwinding device 2 is activated to wind up the nylon rope 6. Arc-shaped housings 21 are fixedly installed inside both the first arc-shaped block 20 and the second arc-shaped block 27. Each arc-shaped housing 21 is rotatably connected to an arc-shaped... The two arc-shaped rotating blocks 22 each have gear teeth on their outer walls. A cleaning brush 23 and a sponge 24 are fixedly installed on the inner ring of each arc-shaped rotating block 22. A first motor 26 is fixedly installed inside the first arc-shaped block 20. A gear 25 is fixedly installed at the output end of the first motor 26, meshing with the gear teeth on the outer wall of the arc-shaped rotating block 22. The cleaning brush 23 has a through hole. A channel is provided inside the arc-shaped rotating block 22. The outer wall of the arc-shaped housing 21 has a channel communicating with the internal channel of the arc-shaped rotating block 22. The through-slot 29, connected to an external vacuuming device, allows the upper and lower arc-shaped housings 21 to push most of the weeds and mud on the nylon rope 6 onto the slope during the winding process, achieving initial cleaning of the nylon rope 6 and reducing the workload of subsequent cleaning. The first motor 26 is then activated, driving the gear 25 to rotate the arc-shaped rotating block 22, causing the cleaning brush 23 to rotate and scrub the nylon rope 6, effectively removing remaining small grass clippings and mud, ensuring the cleanliness of the nylon rope 6 surface and extending its service life. The brushed grass clippings and mud are sucked away by the vacuuming device through the through holes on the cleaning brush 23, the internal channels of the arc-shaped rotating block 22, and the through groove 29, preventing debris from re-attaching to the nylon rope 6 or scattering around, thus maintaining a clean working environment. The sponge 24 performs a final cleaning of the brushed nylon rope 6 and absorbs excess water, keeping the nylon rope 6 dry when it is wound into the unwinding device 2. This prevents problems such as mold and corrosion caused by residual moisture, further ensuring the quality and performance of the nylon rope 6.

[0030] In operation, the node is first placed inside the rope ferrule 5 and fixed with bolts. Then, the rope ferrule 5 with the node assembled is placed on the conveyor belt 1. When the node needs to be lowered into the sea, the pushing mechanism 3 is activated to push the rope ferrule 5 with the node onto the support block 18 of the slide groove 11. At this time, the telescopic plate 19 rises and limits the rope ferrule 5.

[0031] Next, the first lead screw 8 is activated, and the sliding block 7 moves under the drive of the lead screw. During the process, the automatic telescopic rod will drive the track trolley 4 to move along the arc track 9. When the track trolley 4 moves, it will push the support block 18 through the push rod, which will then drive the rope ferrule 5 and the node to move synchronously. During the movement of the track trolley 4 along the arc track 9, the distance between the push rope seat plate 12 at the top and the buckle on the rope ferrule 5 will first gradually shorten and then gradually lengthen. During the shortening stage, the push rope seat plate 12 will push the nylon rope 6 into the buckle of the rope ferrule 5, and the buckle will then complete the locking of the nylon rope 6. After that, as the distance lengthens, the push rope seat plate 12 will gradually move away from the buckle.

[0032] Under normal circumstances, the first arc-shaped block 20 and the second arc-shaped block 27 clamp the nylon rope 6. At this time, the fixing frame 17 is located at the end of the slide groove 11, ensuring that the nylon rope 6 is in a horizontal rotation state. When the node starts to move, the second lead screw 13 is activated to drive the first arc-shaped block 20 and the second arc-shaped block 27 to move towards the node. When they are about to approach the node, the second lead screw 13 drives the first arc-shaped block 20 and the second arc-shaped block 27 to move in the same direction as the node. When the nylon rope 6 is pushed into the buckle on the rope clamp 5 by the pusher plate 12, the electric telescopic rod 16 can retract. At this time, the first arc-shaped block 20 and the second arc-shaped block 27 will also move. The nylon rope 6 is moved to ensure smooth engagement. Once the nylon rope 6 and the buckle on the rope clamp 5 are successfully engaged, the second motor 28 is started to drive the second arc block 27 to rotate, releasing the clamp on the nylon rope 6. Then, the rotating platform 14 starts to rotate, moving the first arc block 20 and the second arc block 27 away from the nylon rope 6 to prevent them from blocking the lowering of the node. The rotating platform 14 continues to rotate, and the position of the fixing frame 17 is adjusted by the second lead screw 13, hydraulic push rod 15, and electric telescopic rod 16, so that the first arc block 20 and the second arc block 27 bypass the node and continue to clamp the nylon rope 6.

[0033] When it is necessary to retrieve the lowered node, the nylon rope 6 is wound up using the unwinding device 2, pulling the node up onto the slope. Then, workers can use tools to open the buckle on the rope sleeve 5 and remove the node. At this time, the first arc-shaped block 20 and the second arc-shaped block 27 are still located at the end of the slide groove 11. The unwinding device 2 is then activated to begin winding up the nylon rope 6. During this process, the upper and lower arc-shaped shells 21 push most of the aquatic plants and mud on the nylon rope 6 off onto the slope. The arc-shaped rotating block 22 and the arc-shaped shell 21 are rotatably connected. The arc-shaped rotating block 22 has teeth that mesh with the gear 25. The first motor 26 starts, driving the gear 25 to rotate. The rotation causes the two arc-shaped rotating blocks 22 to rotate inside the arc-shaped housing 21. During the rotation, the cleaning brush 23 inside the arc-shaped rotating block 22 will rotate and brush the nylon rope 6 to remove the remaining small grass clippings and mud. The cleaning brush 23 also has through holes. The grass clippings and mud brushed off will pass through the through holes and the internal channels of the arc-shaped rotating block 22, and finally be sucked away by the vacuum device through the through groove 29 to prevent the grass clippings and mud from accumulating inside the cleaning brush 23 and affecting the brushing effect. For the brushed nylon rope 6, the sponge 24 is responsible for the final cleaning and absorbing the excess water on the nylon rope 6, so that the nylon rope 6 that is wound into the unwinding device 2 remains clean.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A node and rope matching mechanism for marine exploration, comprising a base and a winding device (2), wherein the output end of the winding device (2) is connected to a nylon rope (6), characterized in that: The base is provided with a belt conveyor (1) and a pushing mechanism (3) at the top, and the pushing mechanism (3) is located at the output end of the belt conveyor (1). Multiple rope sleeves (5) for carrying nodes are arranged on the belt conveyor (1). The base is provided with a slide groove (11), and a support block (18) is slidably connected to the slide groove (11). A support platform (10) is provided on one side of the slide groove (11). A rail trolley (4) is installed on the top of the support platform (10) through a first drive assembly. An arc-shaped track (9) is provided between the first drive assembly and the slide groove (11) and is slidably connected to the rail trolley (4). A push rod and a push rope seat plate (12) are fixedly installed on the side of the rail trolley (4) near the support block (18). A fixing frame (17) is installed on the top of the base through a second drive assembly. A cleaning mechanism and a clamping assembly are provided on the fixing frame (17).

2. The marine exploration node and rope matching mechanism according to claim 1, characterized in that: The support block (18) is provided with a liftable telescopic plate (19) inside, which is used to limit the rope ferrule (5) on the support block (18).

3. The marine exploration node and rope matching mechanism according to claim 1, characterized in that: The first drive assembly includes a first lead screw (8) rotatably connected to the top of the support platform (10), the first lead screw (8) is threadedly connected to a sliding block (7), and the bottom of the sliding block (7) is slidably connected to the support platform (10). The track trolley (4) is fixedly connected to the sliding block (7) via an automatic telescopic rod.

4. The marine exploration node and rope matching mechanism according to claim 1, characterized in that: The second drive assembly includes a second lead screw (13) rotatably connected to the top of the base. The outer wall of the second lead screw (13) is threadedly connected to a rotating platform (14), and the bottom of the rotating platform (14) is slidably connected to the base. A hydraulic push rod (15) is fixedly installed on the top of the rotating platform (14). An electric telescopic rod (16) is fixedly installed at the output end of the hydraulic push rod (15), and the telescopic end of the electric telescopic rod (16) is fixedly connected to a fixed frame (17).

5. The marine exploration node and rope matching mechanism according to claim 1, characterized in that: The clamping assembly includes a first arc-shaped block (20) fixedly mounted on a fixed frame (17), a second motor (28) fixedly mounted on the top of the fixed frame (17), a second arc-shaped block (27) fixedly mounted on the output end of the second motor (28), and the second arc-shaped block (27) is located above the first arc-shaped block (20).

6. The marine exploration node and rope matching mechanism according to claim 5, characterized in that: An arc-shaped housing (21) is fixedly installed inside the first arc-shaped block (20) and the second arc-shaped block (27), and an arc-shaped rotating block (22) is rotatably connected inside each arc-shaped housing (21). A cleaning brush (23) and a sponge (24) are fixedly installed on the inner ring of the arc-shaped rotating block (22). A first motor (26) is fixedly installed inside the first arc-shaped block (20). A gear (25) is fixedly installed at the output end of the first motor (26), and the gear (25) meshes with the gear teeth on the outer wall of the arc-shaped rotating block (22). A through hole is opened on the cleaning brush (23). A channel is provided inside the arc-shaped rotating block (22). A through groove (29) communicating with the channel inside the arc-shaped housing (21) is opened on the outer wall of the arc-shaped housing (21), and a dust collection device is connected to the outside of the through groove (29).

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