Oil-to-electricity dredging ship

Abstract

The invention discloses an oil-to-electricity desilting ship, and relates to the technical field of desilting, the oil-to-electricity desilting ship comprises a desilting ship body, the top of the desilting ship body is fixedly connected with a fixing block, one side of the fixing block is provided with a hinge arm, one end of the hinge arm is provided with a digging plate, and the top of the desilting ship body is fixedly connected with a balance weight block; a hinged block is fixedly connected to the top of the balance weight block, a connecting block is hinged to the hinged block, a desilting stabilizing mechanism is arranged at the top of the connecting block, and through the arrangement of the desilting stabilizing mechanism, in the process of excavating sludge, a hydraulic rod is started firstly, so that the hydraulic rod is stretched, and a rotating plate is pushed through hinging; the rotating plate is driven to rotate on the hinge block in a hinged mode through the connecting block, the rotating plate is gradually pushed to be in a vertical state from a horizontal state, one end of the rotating plate is inserted into sludge outside the dredging ship body, and therefore the posture of the whole ship is stabilized, and the problem of side inclination when the dredging plate excavates the sludge is prevented.

Description

Technical Field

[0001] This invention relates to the field of dredging technology, specifically to a dredging vessel converted from oil to electricity. Background Technology

[0002] A dredging vessel is an underwater purification tool that uses a power system to drive the dredging equipment and a conveyor system to transport sediment. Its core structure comprises three main modules: the dredging equipment, the power system, and the conveyor system. The power system can be configured with either a diesel engine or an electric motor, making it suitable for silt removal in reservoirs, rivers, lakes, and other similar environments. A riverbed silt dewatering device, as described in patent application CN117003461B, includes: a mounting frame; a centrifugal limiting shell mounted on the mounting frame, wherein a drain pipe is provided at the bottom of the centrifugal limiting shell for the discharge of water after silt dewatering; a centrifugal drive assembly tilted on the centrifugal limiting shell for centrifugal dewatering of riverbed silt; a feeding assembly mounted on the mounting frame for feeding silt to the centrifugal drive assembly; and a filter press ejection assembly mounted on the centrifugal drive assembly and connected to the feeding assembly for pressing the centrifugally dewatered silt cake while the centrifugal drive assembly is running and pushing the pressed silt cake into a silt collection trough. Dredging is a crucial task in river management, water conservancy project construction, and aquatic environment maintenance. Dredging vessels, as the core equipment for dredging operations, are widely used for removing silt from various rivers, lakes, and ports. In actual dredging operations, oil-to-electric dredging vessels face numerous more significant challenges, among which the stability of the hull during dredging is particularly critical. Because the silt at the bottom of the river is soft and unevenly distributed, the bearing capacity varies considerably in different areas. When the dredging plate at the front of the oil-to-electric dredging vessel delves deep into the silt, it exerts a lateral force on the hull.

[0003] Especially when dredging deeper or encountering locally hard silt layers, this lateral force increases significantly. Traditional dredging vessels lack effective hull stabilization devices, making them highly susceptible to listing under such lateral forces. Once the hull lists, it not only affects the normal dredging operation, leading to a significant decrease in dredging efficiency, but may also cause the dredging vessel to lose balance, resulting in a safety accident. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dredging vessel that has been converted from oil to electricity, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a dredging vessel converted from oil to electricity, comprising a dredging vessel body, a fixing block fixedly connected to the top of the dredging vessel body, a hinged arm provided on one side of the fixing block, a digging plate provided at one end of the hinged arm, a counterweight fixedly connected to the top of the dredging vessel body, a hinged block fixedly connected to the top of the counterweight, a connecting block hinged to the hinged block, and a dredging stabilizing mechanism provided on the top of the connecting block; The dredging and stabilizing mechanism includes: A rotating plate, the bottom of which is fixedly connected to the top of a connecting block, a connecting block is provided at one end of the rotating plate, and an insert block is fixedly connected to one end of the connecting block; The first groove is formed on the outer wall of the insert block, and the second groove is formed on the outer wall of the connecting block. The inner wall of the connecting block is slidably connected with a sliding limiter, and a bearing ring is provided on one side of the connecting block.

[0006] Preferably, a connecting block is rotatably connected to one side of the connecting block via a bearing ring, and one side of the connecting block is fixedly connected to one end of the rotating plate.

[0007] Preferably, the rotating plate is a rectangular strip structure, and there are two rotating plates, which are arranged on the top two sides of the counterweight.

[0008] Preferably, the sliding limiter is a parallelogram-shaped plate structure, and a groove is formed on the inner wall of the connecting block. The sliding limiter is slidably connected to the inner wall of the connecting block through the groove.

[0009] Preferably, the sliding limiter is slidably connected to and seals the inside of the groove, and the first groove and the second groove are arc-shaped grooves.

[0010] Preferably, the outer wall of the rotating plate is slidably connected to a first groove, and a float is fixedly connected to the top of the first groove. The float is hollow inside and is used to float in water.

[0011] Preferably, the outer wall of the connecting circular block is provided with an auxiliary dredging mechanism, the auxiliary dredging mechanism including a connector, one end of the connector being slidably connected to the outer wall of the connecting circular block, and the other end of the connector being fixedly connected to the outer wall of the connecting square block.

[0012] Preferably, the connector is an arc-shaped block structure, and there are two connectors, which are distributed symmetrically on both sides of the connecting circle block with the connecting circle block as the axis.

[0013] Preferably, the connector has a second connecting hole at one end near the connecting block, and the connecting block has a first connecting hole at one end near the connector.

[0014] Preferably, the groove on the inner wall of the connecting block is connected to the inside of the first connecting hole, and the inside of the first connecting hole is connected to the inside of the second connecting hole inside the connector.

[0015] This invention provides a dredging vessel converted from oil to electricity. It has the following beneficial effects: 1. This invention, by setting up a dredging and stabilizing mechanism, allows the articulated arm and the dredging plate to be controlled by a fixed block at the front of the dredging vessel to perform dredging and silt removal work when the dredging vessel is traveling in the silt of the river. During the dredging process, the hydraulic rod is first activated to extend it, thereby pushing the rotating plate through the articulation. The rotating plate rotates through the connecting block on the articulation block, and the rotating plate is gradually pushed from a horizontal state to a vertical state. One end of the rotating plate is inserted into the silt outside the dredging vessel, thereby stabilizing the posture of the entire vessel and preventing the dredging plate from tilting when digging silt. 2. By setting up a sludge stabilization mechanism, when the rotating plate is inserted into the sludge, the connecting block and the insert block are inserted. The insert block, with its pointed shape at the contact point with the sludge, can be smoothly inserted into the sludge, reducing the resistance encountered during insertion and thus reducing the instability of the hull during insertion. At the same time, the insert block and the connecting block have a first groove and a second groove on their inner walls. After the insert block and the connecting block are inserted into the sludge, the sludge is embedded in the grooves of the first groove and the second groove, which enhances the lateral support of the connecting block and the insert block for the sludge vessel body, effectively suppresses the lateral displacement of the hull, and thus improves the stability and accuracy of the sludge dredging operation. 3. By setting up a dredging and stabilizing mechanism, when encountering harder silt, the dredging blocks are pushed deeper into the connecting blocks, reducing the difficulty of inserting the connecting blocks and inserts into the silt. This also reduces the problem of hull tilting caused by reaction forces. When encountering soft silt, the sliding limiters only retract slightly, ensuring that the gripping force on the silt and the supporting force on the hull formed by several sliding limiters are not excessively weakened. This allows for dynamic adaptation to the physical properties of the silt under different working conditions, ensuring that the hull is always in the optimal support state. 4. By setting up a dredging stabilization mechanism, the slight hull sway during excavation is given a flexible buffer, avoiding structural stress concentration caused by rigid connections, which can lead to structural fatigue or breakage of connecting parts, and further improving the overall durability and reliability of the vessel. 5. By setting up a dredging and stabilizing mechanism, and with the extended sliding limiter and connecting block having a certain toothed effect, the upward tilting tendency of the counterweight block can be effectively suppressed when digging silt, ensuring that the excavator plate maintains a stable tilt angle during continuous operation. 6. By setting up a dredging and stabilizing mechanism, the first groove is kept floating on the surface of the silt by the buoyancy of the float. By observing the first groove at different positions of the rotating plate, it is possible to determine whether the insertion depth of the rotating plate is uniform, and thus calibrate the attitude of the hull in real time. 7. By setting up a sludge stabilization mechanism, a dynamic sealing connection can be formed by sliding on the outer wall of the connecting block. This allows the sliding limit block to be pushed into the connecting block to different degrees, which will push hydraulic oil through the connecting block into the rotating plate and into the fixed ring. The first fixed seat will push the telescopic block open, so that the sliding block will be pushed and displaced to different degrees on the outer wall of the rotating plate by the telescopic block according to the different hardness of the silt. This provides real-time feedback on the change in silt hardness, making it easy for the operator to accurately control the digging force and posture. This allows the whole system to achieve a "perception-response-adaptation" closed loop in dynamic feedback. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the dredging and stabilizing mechanism of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the disassembly structure of the dredging and stabilizing mechanism of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the dredging and stabilizing mechanism of the present invention. Figure 2 ; Figure 5 For the present invention Figure 4 Enlarged view of point A; Figure 6 For the present invention Figure 4 Enlarged view of point B; Figure 7 This is a schematic diagram of the disassembly structure of the dredging and stabilizing mechanism of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the auxiliary dredging mechanism of the present invention.

[0017] In the diagram: 1. Dredging vessel body; 2. Fixing block; 3. Dredging stabilization mechanism; 301. Rotating plate; 302. Connecting round block; 303. Connecting square block; 304. Insert block; 305. First groove; 306. Second groove; 307. Float block; 308. Sliding limit switch; 309. Bearing ring; 4. Auxiliary dredging mechanism; 401. Connecting piece; 402. Square block; 403. First connecting hole; 404. Second connecting hole; 405. First ventilation slot; 406. Fixing ring; 407. First fixed seat; 408. Telescopic block; 409. Second fixed seat; 410. Sliding square block; 411. Second ventilation slot; 5. Articulated arm; 6. Digging plate; 8. Counterweight block; 9. Articulated block; 10. Connecting block; 11. Hydraulic rod. Detailed Implementation

[0018] Example 1: Please refer to Figure 1-3 The present invention provides a technical solution: a dredging vessel converted from oil to electricity, including a dredging vessel body 1, a fixing block 2 fixedly connected to the top of the dredging vessel body 1, a hinged arm 5 provided on one side of the fixing block 2, a digging plate 6 provided at one end of the hinged arm 5, a counterweight block 8 fixedly connected to the top of the dredging vessel body 1, a hinged block 9 fixedly connected to the top of the counterweight block 8, a connecting block 10 hinged to the hinged block 9, and a dredging stabilizing mechanism 3 provided on the top of the connecting block 10; The dredging and stabilization mechanism 3 includes: Rotating plate 301, the bottom of rotating plate 301 is fixedly connected to the top of connecting block 10, one end of rotating plate 301 is provided with connecting block 303, and one end of connecting block 303 is fixedly connected with insert block 304; The first groove 305 is formed on the outer wall of the insert block 304. The second groove 306 is formed on the outer wall of the connecting block 303. The inner wall of the connecting block 303 is slidably connected with a sliding limiter 308. A bearing ring 309 is provided on one side of the connecting block 303. When in use, as the dredging vessel 1 travels in the river silt, the articulated arm 5 and the dredging plate 6 are controlled by the fixed block 2 at the front of the dredging vessel 1 to carry out dredging work. During the dredging process, the hydraulic rod 11 is activated first, which extends the hydraulic rod 11 and pushes the rotating plate 301 through the articulation. The rotating plate 301 rotates through the connecting block 10 on the articulated block 9. The rotating plate 301 is gradually pushed from the horizontal state to the vertical state. One end of the rotating plate 301 is inserted into the silt outside the dredging vessel 1, thereby stabilizing the posture of the entire vessel and preventing the dredging plate 6 from tilting when dredging the silt. Example 2: Please refer to Figure 1-5 Based on Embodiment 1, this invention provides a technical solution: When inserting a stabilizing device into silt to support the hull, the silt's texture is uneven, with some areas being hard and others soft. Traditional stabilizing devices lack targeted optimization in their insertion end design, resulting in significant resistance when inserted into harder silt. This resistance not only makes the insertion process difficult and consumes a lot of power but also generates a large reaction force, causing the hull to tilt, affecting the dredging vessel's normal operating posture and reducing dredging accuracy. Conversely, when inserted into soft silt, the stabilizing device struggles to provide sufficient lateral support, failing to effectively suppress lateral displacement of the hull. This makes the hull prone to swaying and shifting during dredging, further affecting the stability of the dredging operation.

[0019] Secondly, the hardness of silt varies greatly in different water bodies, and existing stabilization devices cannot dynamically adapt to changes in silt hardness. When encountering harder silt, the stabilization device may be unable to reach the ideal support depth due to difficulty in insertion, thus failing to provide sufficient support force; while in soft silt, the stabilization device may have insufficient grip, resulting in a significant reduction in support effect. Therefore, a connecting block 302 is rotatably connected to one side of the connecting block 303 via a bearing ring 309, and one side of the connecting block 302 is fixedly connected to one end of the rotating plate 301.

[0020] The rotating plate 301 is a rectangular strip structure. There are two rotating plates 301, which are set on the top two sides of the counterweight 8.

[0021] The sliding limiter 308 is a parallelogram plate structure. A groove is opened on the inner wall of the connecting block 303, and the sliding limiter 308 is slidably connected to the inner wall of the connecting block 303 through the groove.

[0022] The sliding limit switch 308 slides and connects to the inner wall of the slide groove and seals the inside of the slide groove. The first groove 305 and the second groove 306 are arc-shaped grooves.

[0023] The outer wall of the rotating plate 301 is slidably connected to a first groove 305, and a float 307 is fixedly connected to the top of the first groove 305. The float 307 is hollow inside and is used to float in water. When the rotating plate 301 is inserted into the silt, the connecting block 303 and the insert block 304 are inserted. The insert block 304, with its pointed shape at the contact point with the silt, can be smoothly inserted into the silt, reducing the resistance encountered during insertion and thus reducing the instability of the hull during insertion. At the same time, the insert block 304 and the connecting block 303 have a first groove 305 and a second groove 306 on their inner walls. The first groove 305 and the second groove 306 are used to embed the silt into the grooves of the first groove 305 and the second groove 306 after the insert block 304 and the connecting block 303 are inserted into the silt, thereby enhancing the lateral support force of the connecting block 303 and the insert block 304 on the dredging vessel body 1, effectively suppressing the lateral displacement of the hull, and thus improving the stability and accuracy of the dredging operation. Meanwhile, when the insert block 304 and the connecting block 303 are inserted into the silt, the sliding limiter 308, which is slidably connected to the inner wall of the connecting block 303, can be pushed into the connecting block 303 to different degrees according to the different hardness of the silt. When encountering harder silt, it is pushed deeper into the connecting block 303, reducing the difficulty of inserting the connecting block 303 and the insert block 304 into the silt, and also reducing the problem of hull tilting caused by reaction force. When encountering soft silt, the sliding limiter 308 only retracts slightly, ensuring that the gripping force on the silt and the supporting force on the hull formed by several sliding limiters 308 are not excessively weakened, so as to dynamically adapt to the physical properties of the silt under different working conditions and ensure that the hull is always in the optimal support state. The connecting round block 302 is rotatably connected to the connecting square block 303 via the bearing ring 309. Therefore, after the connecting square block 303 and the insert block 304 are inserted into the silt, the connecting round block 302 can rotate slightly around the axis of the bearing ring 309, providing a flexible buffer for the slight hull sway during excavation, avoiding structural stress concentration caused by rigid connection, which could lead to structural fatigue or breakage of the connecting part 401, and further improving the overall durability and reliability of the vessel. At the same time, the extended sliding limit switch 308 and the connecting block 303 have a certain toothed effect to increase the upward tilting tendency of the counterweight 8 when digging silt, which can effectively suppress and ensure that the digging plate 6 maintains a stable tilt angle during continuous operation. The first groove 305 is kept floating on the surface of the silt by the buoyancy of the float 307. By observing the first groove 305 at different positions of the rotating plate 301, it can be determined whether the insertion depth of the rotating plate 301 is uniform, and then the attitude of the ship can be calibrated in real time. Example 3: Please refer to Figure 1-8 Based on Embodiments 1 and 2, this invention provides a technical solution: the physical properties of silt vary significantly across different water bodies, with parameters such as hardness and density being spatially unevenly distributed and changing over time. Existing dredging vessel stabilization devices lack an effective mechanism to detect changes in silt hardness in real time when inserted into the silt. Operators often rely on experience to roughly judge the silt's hardness and manually adjust the digging force and vessel attitude. However, this experience-based judgment method has significant errors and is difficult to accurately adapt to the actual changes in silt conditions.

[0024] When dredging vessels operate in areas of hard silt, insufficient dredging force will lead to low dredging efficiency and ineffective silt removal; while excessive dredging force may damage the hull and dredging equipment, increasing maintenance costs and downtime. Conversely, in areas of soft silt, excessive dredging force can cause the hull to sink excessively, affecting its stability; while insufficient dredging force will fail to achieve the desired silt removal effect.

[0025] Furthermore, due to the lack of a real-time silt hardness feedback mechanism, operators find it difficult to adjust the hull's attitude in a timely and accurate manner. During the excavation process, the hull may tilt or sway due to the uneven distribution of silt hardness, which not only affects the excavation accuracy but may also lead to hull instability and safety accidents. For example, when one side of the hull encounters harder silt and the other side encounters softer silt, the hull is prone to tilting towards the softer side. If not adjusted in time, this may cause the hull to capsize, posing a serious threat to personnel and equipment. Therefore, an auxiliary silt-clearing mechanism 4 is provided on the outer wall of the connecting circular block 302. The auxiliary silt-clearing mechanism 4 includes a connector 401, one end of which is slidably connected to the outer wall of the connecting circular block 302, and the other end of which is fixedly connected to the outer wall of the connecting square block 303.

[0026] The connector 401 is an arc-shaped block structure. There are two connectors 401, which are distributed symmetrically on both sides of the connecting block 302 with the connecting block 302 as the axis.

[0027] The connector 401 has a second connecting hole 404 at one end near the connecting block 303, and the connecting block 303 has a first connecting hole 403 at one end near the connector 401.

[0028] The groove on the inner wall of the connecting block 303 is connected to the inside of the first connecting hole 403, and the inside of the first connecting hole 403 is connected to the inside of the second connecting hole 404 inside the connector 401.

[0029] A fixing ring 406 is fixedly connected to the outer wall of the rotating plate 301. A first fixing seat 407 is fixedly connected to the top of the fixing ring 406. The second connecting hole 404 communicates with the inside of the fixing ring 406 and the first fixing seat 407 through the connecting round block 302. A telescopic block 408 is fixedly connected to one side of the first fixed seat 407. The inside of the telescopic block 408 is connected to the inside of the first fixed seat 407. A second fixed seat 409 is fixedly connected to the end of the telescopic block 408 away from the first fixed seat 407. A sliding block 410 is fixedly connected to the outer wall of the second fixed seat 409. The sliding block 410 is slidably connected to the outer wall of the rotating plate 301.

[0030] A square block 402 is fixedly connected to the outer wall of the connector 401. A first ventilation groove 405 is opened on the outer wall of the connecting round block 302. A second ventilation groove 411 is opened on one side of the connector 401 and the square block 402. The inner wall of the connector 401 is connected to the first ventilation groove 405 inside the connecting round block 302 through the second ventilation groove 411. The length of the second ventilation groove 411 is greater than the length of the first ventilation groove 405. When the sliding limit switch 308 is pushed into the connecting block 303, it will squeeze the hydraulic oil inside the connecting block 303. The hydraulic oil then enters the connector 401 through the first connecting hole 403 and the second connecting hole 404, and enters the first venting groove 405 on one side of the connecting round block 302 through the second venting groove 411 on the connecting block 401 and the blocks 402 on both sides. The diameter of the second venting groove 411 is larger than that of the first venting groove 405. Therefore, when the connecting block 303 rotates and swings, the connecting block 401 and the blocks 402 are driven to rotate synchronously, which can squeeze the hydraulic oil inside the connecting round block 302. 2. The sliding of the outer wall forms a dynamic sealing connection, which allows the sliding limit block 308 to be pushed into the connecting block 303 to different degrees. This pushes the hydraulic oil through the connecting block 302 into the rotating plate 301 and the fixed ring 406. The first fixed seat 407 pushes the telescopic block 408 open, so that the sliding block 410 will be pushed and displaced to different degrees on the outer wall of the rotating plate 301 by the telescopic block 408 according to the different hardness of the silt. This provides real-time feedback on the change in silt hardness, which is convenient for the operator to accurately control the digging force and posture. This allows the whole system to achieve a "perception-response-adaptation" closed loop in dynamic feedback.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dredging vessel converted from oil to electricity, comprising a dredging vessel body (1), wherein a fixing block (2) is fixedly connected to the top of the dredging vessel body (1), a hinged arm (5) is provided on one side of the fixing block (2), and a digging plate (6) is provided at one end of the hinged arm (5), characterized in that: The top of the dredging vessel body (1) is fixedly connected to a counterweight block (8), the top of the counterweight block (8) is fixedly connected to a hinge block (9), the hinge block (9) is hinged to a connecting block (10), and the top of the connecting block (10) is provided with a dredging stabilizing mechanism (3). The dredging and stabilizing mechanism (3) includes: A rotating plate (301) is fixedly connected at its bottom to the top of a connecting block (10). A connecting block (303) is provided at one end of the rotating plate (301), and an insert block (304) is fixedly connected at one end of the connecting block (303). The first groove (305) is formed on the outer wall of the insert block (304). The outer wall of the connecting block (303) is provided with a second groove (306). The inner wall of the connecting block (303) is slidably connected with a sliding limiter (308). A bearing ring (309) is provided on one side of the connecting block (303).

2. The dredging vessel converted from oil to electricity according to claim 1, characterized in that: The connecting block (303) is rotatably connected to a connecting round block (302) via a bearing ring (309) on one side, and one side of the connecting round block (302) is fixedly connected to one end of the rotating plate (301).

3. The dredging vessel converted from oil to electricity according to claim 2, characterized in that: The rotating plate (301) is a rectangular strip structure. There are two rotating plates (301), which are set on the top two sides of the counterweight (8).

4. A dredging vessel converted from oil to electricity according to claim 3, characterized in that: The sliding limiter (308) is a parallelogram plate structure. The inner wall of the connecting block (303) has a sliding groove. The sliding limiter (308) is slidably connected to the inner wall of the connecting block (303) through the sliding groove.

5. A dredging vessel converted from oil to electricity according to claim 4, characterized in that: The sliding limit switch (308) is slidably connected to the inner wall of the groove and seals the inside of the groove. The first groove (305) and the second groove (306) are arc-shaped grooves.

6. A dredging vessel converted from oil to electricity according to claim 5, characterized in that: The outer wall of the rotating plate (301) is slidably connected to a first groove (305), and a float (307) is fixedly connected to the top of the first groove (305). The float (307) is hollow inside and is used to float in water.

7. A dredging vessel converted from oil to electricity according to claim 6, characterized in that: An auxiliary dredging mechanism (4) is provided on the outer wall of the connecting round block (302). The auxiliary dredging mechanism (4) includes a connector (401). One end of the connector (401) is slidably connected to the outer wall of the connecting round block (302), and the other end of the connector (401) is fixedly connected to the outer wall of the connecting block (303).

8. A dredging vessel converted from oil to electricity according to claim 7, characterized in that: The connector (401) is an arc-shaped block structure. There are two connectors (401), and the two connectors (401) are distributed symmetrically on both sides of the connecting circle (302) with the connecting circle (302) as the axis.

9. A dredging vessel converted from oil to electricity according to claim 8, characterized in that: The connector (401) has a second connecting hole (404) at one end near the connecting block (303), and the connecting block (303) has a first connecting hole (403) at one end near the connector (401).

10. A dredging vessel converted from oil to electricity according to claim 9, characterized in that: The groove on the inner wall of the connecting block (303) is connected to the inside of the first connecting hole (403), and the inside of the first connecting hole (403) is connected to the inside of the second connecting hole (404) inside the connector (401).

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