Ice area navigation drag suction dredger drag arm anti-collision device and method of use

Abstract

The application discloses an ice region navigation drag suction dredger rake arm anti-collision device and a use method thereof, which comprises opposite protection structures installed on the rake arm, a track is arranged between the opposite protection structures on the two sides, a telescopic propulsion device is installed at one end of the track, a positioning pile is installed at the other end of the track, a sliding block is connected to the end of the telescopic propulsion device close to the track, and a protection device is fixed to the top of the sliding block; the telescopic propulsion device comprises a section arm and a telescopic hydraulic cylinder, and a plurality of section arms are connected to the outer side of the telescopic hydraulic cylinder, and the telescopic movement of the plurality of section arms is realized by the telescopic hydraulic cylinder. The protection device can prevent the sea ice from directly contacting the rake arm, and the track and the positioning pile can make the device have sufficient flexibility and can adjust the positions of the overall device and the protection device; the cooperation of the plurality of components can not only effectively reduce the collision force of the sea ice on the ship, but also has sufficient flexibility, and the corresponding positions can be selected according to different situations, so that the rake arm structure is effectively and flexibly protected.

Description

Technical Field

[0001] This invention relates to a rake arm anti-collision device and its usage method, and more particularly to a rake arm anti-collision device and its usage method for a trailing suction hopper dredger operating in ice-covered areas. Background Technology

[0002] Since dredgers do not operate in winter, but seabed silt accumulates severely in domestic sea areas such as the Bohai Sea throughout the year, in order to extend their operating cycle and reduce the window period, this study specifically addresses the navigation conditions of trailing suction hopper dredgers in ice-covered areas, in order to prevent damage to their drag arms from the impact of ice loads.

[0003] Currently, domestic scholars have not conducted structural optimization research on the drag booms of trailing suction hopper dredgers in ice-covered environments. The current approach to managing the drag booms of trailing suction hopper dredgers involves regular maintenance, but this method can delay work efficiency if the repair shop is far away. Therefore, there is an urgent need to propose a protective structure that can significantly reduce collision stress. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a collision protection device for the drag suction dredger arm and its usage method for navigating ice areas, so as to reduce collision stress, and the fixed position of the protection device can be selected according to the draft.

[0005] Technical solution: The present invention includes opposing protective structures installed on the rake arm, with a track between the opposing protective structures on both sides. A telescopic propulsion device is installed at one end of the track, and a positioning stake is installed at the other end. A slider is connected to the end of the telescopic propulsion device near the track, and a protective device is fixed on the top of the slider. The telescopic propulsion device includes a segmented arm and a telescopic hydraulic cylinder. Multiple segments of the segmented arm are connected to the outside of the telescopic hydraulic cylinder, and the telescopic movement of the multiple segments of the segmented arm is realized by the telescopic hydraulic cylinder.

[0006] The boom includes a first boom, a second boom, and a third boom that are sequentially fitted together. The first boom is fitted on the outside of the telescopic hydraulic cylinder, and the third boom is fitted with an outer shell. The outer shell is fixed to the opposing protective structure.

[0007] The end of the telescopic hydraulic cylinder furthest from the track is connected to the boom via a connecting rod. The two sides of the connecting rod are connected to the corresponding boom via pins. The connecting rod and the telescopic hydraulic cylinder are connected via cylinder pins.

[0008] The surface of the arm segment is provided with several limiting holes, and the pin is inserted into the corresponding limiting hole.

[0009] One end of the slider is fixed with a slider joint, which is connected to the telescopic propulsion device.

[0010] The end of one arm section is provided with a connector, which is connected to the slider connector.

[0011] The opposing protective structure has multiple bolt holes spaced apart on both sides and at the bottom.

[0012] The slider has slider bolt holes on its side, which are connected to bolt holes on both sides of the opposing protective structure.

[0013] The track is equipped with a slot, and the slider can slide in and fit with the slot of the track to ensure that the protective device is accurately installed and positioned, while increasing the friction to prevent the protective device from sliding off the track.

[0014] A method for using a collision-resistant device for the boom of a trailing suction hopper dredger operating in ice-covered areas includes the following steps:

[0015] S1. Slide the slider into the track and connect the telescopic propulsion device to the slider;

[0016] S2. Lock the cylinder pin on the connecting rod of one section of the arm, remove the pin on one section of the arm, extend the arm by extending the telescopic hydraulic cylinder, and after reaching the desired position, fix the pin, remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder returns to the initial position.

[0017] S3. Tighten the cylinder pin on the connecting rod that connects to the second section of the boom, remove the pin on the second section of the boom, and the telescopic hydraulic cylinder will drive the second section of the boom to extend. After reaching the desired position, fix the pin; remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder will return to the initial position.

[0018] S4. By analogy, the three-section boom moves. When the protection device reaches the required position, the joint automatically rotates to separate the protection device, and the boom retracts back to its original position.

[0019] Beneficial effects: The protective device of the present invention can prevent sea ice from directly contacting the rake arm, and is equipped with a track and positioning stake, which can make it flexible enough to adjust the position of the overall device and the protective device. In this way, the combined action of multiple components can not only effectively reduce the collision force of sea ice on the ship, but also have sufficient flexibility to select the corresponding position according to different situations, thus effectively and flexibly protecting the rake arm structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the opposing protection structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the protection device of the present invention;

[0022] Figure 3 This is a schematic diagram of the slider of the present invention;

[0023] Figure 4 This is a schematic diagram of the telescopic propulsion device of the present invention;

[0024] Figure 5 This is a schematic diagram of the positioning pile of the present invention. Detailed Implementation

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the anti-collision device for the drag suction dredger arm of the present invention includes opposing protective structures 2 installed on the drag suction dredger arm 6. The opposing protective structures 2 are in the form of sliding rails and are made of EH36 steel, possessing strong impact resistance and preventing damage to the entire device. Multiple bolt holes 3 are spaced apart on both sides and the bottom of the opposing protective structures 2. The bottom bolt holes 3 can be used to fix the device to the drag suction dredger arm 6 using expansion bolts. The bolt holes 3 on both sides can be used to select the fixing position of the protective device 7 according to the real-time draft and sea conditions, providing flexibility in selecting the protection position. A track 4 is provided between the opposing protective structures 2 on both sides. A telescopic propulsion device 5 is installed at one end of the track 4, and a [missing information - likely a device name] is installed at the other end. Figure 5 The positioning post 1 shown has its sides and bottom welded together, which not only securely fixes it but also better fits the opposing protective structure 2, ensuring that the protective device 7 does not leave the track 4. A slider 8 is connected to one end of the telescopic propulsion device 5 near the track 4, and the protective device 7 is fixed to the top of the slider 8, similar to 2 and 3. Figure 3 As shown.

[0027] The track 4 has a slot, and the slider 8 can slide smoothly into the slot of the track 4 to ensure the precise installation and positioning of the protective device 7, while increasing friction to prevent the protective device 7 from slipping off the track. The protective device 7 can be selected with a structure of appropriate thickness and strength according to the actual sea conditions, and can be flexibly installed and removed on the opposing protective structure 2. The slider 8 has slider bolt holes 801 on its side, which are connected to the bolt holes 3 on both sides of the opposing protective structure 2 by expansion bolts. One end of the slider 8 is fixed with a slider joint 802, which is connected to the telescopic propulsion device 5.

[0028] like Figure 4As shown, the telescopic propulsion device 5 includes a housing 502, a segmented arm 9, and a telescopic hydraulic cylinder 508. Multiple segments of the segmented arm 9 are connected to the outside of the telescopic hydraulic cylinder 508, enabling the telescopic movement of the multiple segments of the segmented arm 9. The housing 502 is located on the outside of the segmented arm 9, and the telescopic propulsion device 5 is fixed to the opposing protection structure 2 via the housing 502. The segment arm 9 includes a first segment arm 505, a second segment arm 504, and a third segment arm 503, which are sequentially sleeved. The first segment arm 505 is sleeved on the outside of the telescopic hydraulic cylinder 508. The end of the first segment arm 505 is provided with a connector 510. The connector 510 has internal threads. The connector 510 is automatically rotated by an automatic control system to connect with the slider connector 802. The third segment arm 503 is sleeved on the outside of a housing 502. The end of the telescopic hydraulic cylinder 508 away from the track 4 is connected to the segment arm 9 by a connecting rod 506. The two sides of the connecting rod 506 are respectively connected to the corresponding segment arm 9 by pins 501. The surface of the segment arm 9 is provided with several limiting holes 509. The pins 501 are inserted into the corresponding limiting holes 509. The connecting rod 506 is connected to the telescopic hydraulic cylinder 508 by a cylinder pin 507.

[0029] When the telescopic hydraulic cylinder 508 extends, the cylinder pin on the connecting rod 506 of the first arm 505 is locked. The pin on the first arm 505 is removed, and the extension of the telescopic hydraulic cylinder 508 drives the first arm 505 to extend to the desired position. After reaching the desired position, the pin is fixed through the limiting hole 509. The cylinder pin on the connecting rod is then removed, and the telescopic hydraulic cylinder 508 returns to its initial position. The cylinder pin on the connecting rod connected to the second arm 504 is locked. The pin on the second arm 504 is then removed, and the telescopic hydraulic cylinder 508 drives the second arm 504 to extend to the desired position. The pin is fixed through the limiting hole 509. The cylinder pin on the connecting rod is then removed, and the telescopic hydraulic cylinder 508 returns to its initial position. This process continues, driving the movement of the third arm 503. The movement of the telescopic propulsion device achieves the positioning of the protection device 7. After the protection device 7 reaches the desired position, the connector 510 automatically rotates to separate the protection device 7, and the arm 9 retracts to its original position, preventing the collision stress generated during the operation of the protection device 7 from damaging the telescopic propulsion device 5.

[0030] A method for using a collision-resistant device for the boom of a trailing suction hopper dredger operating in ice-covered areas includes the following steps:

[0031] S1. Slide the slider into the track and connect the telescopic propulsion device to the slider;

[0032] S2. Lock the cylinder pin on the connecting rod of one arm section, remove the pin on one arm section, extend the arm section by extending the telescopic hydraulic cylinder, and after reaching the desired position, fix the pin through the limit hole, remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder returns to the initial position.

[0033] S3. Tighten the cylinder pin on the connecting rod connected to the second arm, remove the pin on the second arm, and the telescopic hydraulic cylinder will drive the second arm to extend. After reaching the desired position, fix the pin through the limit hole; remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder will return to the initial position.

[0034] S4. By analogy, the three-section boom moves, which in turn moves the protection device. After the protection device reaches the required position, the joint automatically rotates to separate the protection device, and the boom retracts back to its original position.

Claims

1. A collision-resistant device for the boom of a trailing suction hopper dredger operating in ice-covered areas, characterized in that, It includes opposing protective structures installed on the rake arm, with a track between the opposing protective structures on both sides. A telescopic propulsion device is installed at one end of the track, and a positioning stake is installed at the other end. A slider is connected to the end of the telescopic propulsion device near the track, and a protective device is fixed on the top of the slider. The telescopic propulsion device includes a segmented arm and a telescopic hydraulic cylinder. Multiple segments of the segmented arm are connected to the outside of the telescopic hydraulic cylinder, and the telescopic movement of the multiple segments of the segmented arm is realized by the telescopic hydraulic cylinder.

2. The anti-collision device for the boom of a trailing suction hopper dredger for ice-covered navigation according to claim 1, characterized in that, The boom includes a first boom, a second boom, and a third boom that are sequentially fitted together. The first boom is fitted on the outside of the telescopic hydraulic cylinder, and the third boom is fitted with an outer shell. The outer shell is fixed to the opposing protective structure.

3. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 2, characterized in that, The end of the telescopic hydraulic cylinder furthest from the track is connected to the boom via a connecting rod. The two sides of the connecting rod are connected to the corresponding boom via pins. The connecting rod and the telescopic hydraulic cylinder are connected via cylinder pins.

4. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 1, characterized in that, The surface of the arm segment is provided with several limiting holes, and the pin is inserted into the corresponding limiting hole.

5. The anti-collision device for the boom of a trailing suction hopper dredger for ice-covered navigation according to claim 2, characterized in that, One end of the slider is fixed with a slider joint, which is connected to the telescopic propulsion device.

6. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 5, characterized in that, The end of one arm section is provided with a connector, which is connected to the slider connector.

7. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 1, characterized in that, The opposing protective structure has multiple bolt holes spaced apart on both sides and at the bottom.

8. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 7, characterized in that, The slider has slider bolt holes on its side, which are connected to bolt holes on both sides of the opposing protective structure.

9. The anti-collision device for the hook arm of a trailing suction hopper dredger for ice-covered navigation according to claim 1, characterized in that, The track has a slot, and the slider can slide in and fit into the slot of the track.

10. A method of using the anti-collision device for the hook arm of a trailing suction hopper dredger as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Slide the slider into the track and connect the telescopic propulsion device to the slider; S2. Lock the cylinder pin on the connecting rod of one section of the arm, remove the pin on one section of the arm, extend the arm by extending the telescopic hydraulic cylinder, and after reaching the desired position, fix the pin, remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder returns to the initial position. S3. Tighten the cylinder pin on the connecting rod that connects to the second section of the boom, remove the pin on the second section of the boom, and the telescopic hydraulic cylinder will drive the second section of the boom to extend. After reaching the desired position, fix the pin; remove the cylinder pin on the connecting rod, and the telescopic hydraulic cylinder will return to the initial position. S4. By analogy, the three-section boom moves. When the protection device reaches the required position, the joint automatically rotates to separate the protection device, and the boom retracts back to its original position.

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