Limiting protection device of ship lock anti-collision warning system

Abstract

A limiting protection device of a ship lock anti-collision warning system comprises an inductive switch support and an inductive plate support, and the inductive switch support is installed on a ship lock wall; the movable steel wire rope support is provided with a maintenance platform, and the induction plate support is installed on the maintenance platform. Two vertical sliding holes are formed in the induction switch support, and two first horizontal sliding holes are formed in the induction plate support. According to the utility model, the problems of tedious maintenance, difficult adjustment, large installation error, insufficient monitoring, unstable electrical connection and the like of the original limit switch are effectively solved, and the newly designed inductive switch bracket, inductive plate bracket and mechanical switch bracket provide reliable physical support for the accurate operation of the limit switch and the anti-collision mechanical switch. And a safer, more efficient and more intelligent solution is provided for an anti-collision warning system.

Description

Technical Field

[0001] The utility model belongs to the technical field of water transportation, and particularly relates to a limit protection device for a ship lock anti-collision warning system. Background Art

[0002] A ship lock is one of the main navigation buildings of a water conservancy project, and its safe and efficient operation is an important guarantee for ensuring waterway navigation. A ship lock anti-collision warning system is an auxiliary warning and protection device installed in front of the miter gate of the ship lock to prevent ships from colliding with the gate. After a ship (or a fleet) enters the ship lock, in order to prevent or minimize the accident of the ship or fleet sliding forward towards the miter gate due to the driver's operation error or ship failure, an anti-collision warning system is set at the ship lock head to remind the ship or fleet drivers to drive carefully after the ship enters the lock and sail into the miter gate at a strictly regulated speed. In addition, in case of an accident, the anti-collision warning system will play a role in blocking the ship, absorbing the impact energy and decelerating the ship, thus preventing and reducing the damage to the gate and the ship to a certain extent. The operation instruction of the anti-collision device is dynamically associated with other devices, so that the anti-collision device can descend in place when the ship moves and approaches, and can lift in place when the ship needs to pass through the anti-collision device.

[0003] Such as Figure 1As shown in the figure, the anti-collision warning system is usually mainly composed of a lifting mechanism 100, a movable wire rope support 101, rails and embedded parts, a ship arresting rope 102, a warning sign 103, electrical components and a general controller; the upper limit switch and the upper limit switch are part of the electrical components. The upper limit switch is used to trigger the "upper limit" position signal after the anti-collision warning system rises to the working height. If the "upper limit" position signal cannot be triggered normally and in time, the upper limit switch triggers the "upper limit" protection signal, causing the drum motor of the lifting mechanism 100 to hold. The gate, the lifting mechanism 100 stops working, preventing the anti-collision warning system from continuing to rise; in the prior art, the upper limit switch and the upper limit switch both use a domestic crane limit switch, which is a mechanical limit switch. During the operation of the equipment, maintenance personnel found that the mechanical limit switch has the following obvious disadvantages: (1) It is necessary to regularly apply ZG-3 calcium-based grease to the crane limit switch to reduce mechanical movement wear and ensure its smooth operation, so a lot of maintenance work is required; (2) When the lock is at a higher operating water level, it is necessary to adjust the Adjust the position of the in-place limit switch and the upper limit switch to prevent the ship arresting cable 102 and the warning sign 103 of the anti-collision warning system from being immersed in the river water. When adjusting, it is necessary to loosen the round nut and prevent the cam group from being in a free rotation state. The round nut and the cam group are both components of the limit switch of this model of crane. After the cam group is fully mobilized and checked, it is tightened with the round nut to prevent loosening and dislocation. When tightening the round nut, the entire cam group and the micro switch will produce a certain displacement, which will cause errors in the adjusted in-place signal of the anti-collision warning system. The whole operation process is also quite (3) When installing the limit switch of this type of crane, it is necessary to ensure that the axis of the crane's rotating mechanism coincides with the input axis of the limit switch to prevent additional stress caused by installation errors; (4) Since the gear structure, cam structure and micro switch of the limit switch are all in a closed casing, once mechanical jamming, wear or poor contact of the micro switch contacts occurs and arcing occurs, it cannot be discovered in time, which poses a certain risk to the safe operation of the lock; (5) The limit switch wiring method is plug-in, and the plug is relatively easy to loosen, which increases the failure rate of the equipment. Utility Model Content

[0004] The utility model aims to provide a limit protection device for a ship lock anti-collision warning system, which solves many technical problems existing in the crane limit switch of the electrical component of the existing ship lock anti-collision warning system.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A limit protection device for a ship lock anti-collision warning system, comprising an induction switch bracket and an induction plate bracket. The induction switch bracket is installed on the ship lock wall; the movable wire rope bracket 101 has a maintenance platform, and the induction plate bracket is installed on the maintenance platform;

[0007] Two vertical sliding holes are opened on the induction switch bracket, and two first horizontal sliding holes are opened on the induction plate bracket. The two first horizontal sliding holes are arranged side by side in the horizontal direction;

[0008] An installation plate is arranged on the induction switch bracket. The installation plate is installed on the two vertical sliding holes through a plurality of bolt connection pairs. The installation plate is used to install the upper-in-place induction switch and the upper-limit induction switch. The upper-limit induction switch is located above the upper-in-place induction switch. An induction plate is arranged on the induction plate bracket. The induction plate is installed on the two first horizontal sliding holes through a plurality of bolt connection pairs. The induction plate is of an L-shaped structure and faces the side of the installation plate.

[0009] Furthermore, the limit protection device for the ship lock anti-collision warning system further comprises a mechanical switch bracket. The mechanical switch bracket is installed on the ship lock wall and is located above the induction switch bracket. Two second horizontal sliding holes are opened on the mechanical switch bracket. The two second horizontal sliding holes are arranged side by side in the vertical direction. An anti-overrun mechanical limit switch is arranged on the mechanical switch bracket. The anti-overrun mechanical limit switch is installed on the two second horizontal sliding holes through bolts and nuts.

[0010] Furthermore, both the upper-in-place induction switch and the upper-limit induction switch are inductive proximity switches.

[0011] Furthermore, two guide rails are installed on the ship lock wall. A movable bottom plate is installed between the two guide rails. The movable bottom plate can move vertically along the two guide rails. A quick locking mechanism is further arranged between the movable bottom plate and the guide rails. The quick locking mechanism is used to fix the relative position between the movable bottom plate and the guide rails; both the mechanical switch bracket and the induction switch bracket are installed on the movable bottom plate.

[0012] Furthermore, a plurality of transverse sliding grooves are arranged on the movable bottom plate. All the transverse sliding grooves are arranged side by side up and down. A plurality of sliding seats are arranged in each transverse sliding groove. The sliding seats can slide in the transverse sliding grooves. Threaded holes are arranged on the sliding seats. Both the mechanical switch bracket and the induction switch bracket are installed on the transverse sliding grooves through bolts. The bolts are threadedly installed in the threaded holes of the sliding seats.

[0013] Further, the movable bottom plate is of a box structure, and the quick locking mechanism is arranged inside the movable bottom plate. The quick locking mechanism includes a threaded sleeve, a driving block, and two pressing blocks. A track is fixed inside the movable bottom plate, and the track is arranged in the vertical direction. The driving block is installed on the track and can slide on the track. The outer shape of the driving block is an isosceles trapezoid. The two pressing blocks are located on both sides of the driving block. Two positioning columns are fixed inside the movable bottom plate. Two guiding holes are formed on the pressing blocks, and the two positioning columns are respectively inserted into the two guiding holes, and the positioning columns can slide relatively in the guiding holes. The outer shape of the pressing block is a right trapezoid. A sliding groove is formed on the hypotenuse waist of the pressing block. Two edges adapted to the sliding grooves are arranged on both waists of the driving block, and the two edges of the driving block respectively slide through the sliding grooves of the two pressing blocks, and the edges can slide relatively in the sliding grooves;

[0014] Notches are formed on the opposite sides of the movable bottom plate, and the straight-edge waists of the two pressing blocks respectively correspond to the two notches. The threaded sleeve is fixed inside the movable bottom plate by screws. The threaded sleeve has an internal thread, and a lead screw is arranged inside the threaded sleeve. The lead screw is in threaded cooperation with the threaded sleeve. The lower end of the lead screw is installed on the top of the driving block in a rotating manner, and a handwheel is arranged at the upper end of the lead screw.

[0015] Further, rubber pads are arranged on the straight-edge waists of the pressing blocks.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: By introducing an inductive switch, a mechanical limit switch, and optimizing the installation structure, the present utility model effectively solves the problems existing in the original mechanical limit switch, and improves the safety and flexibility of the anti-collision warning system. Specifically:

[0017] (1) Improving the automation level: The present utility model replaces the domestic crane limit switch with an upper-in-place inductive switch and an upper-limit inductive switch. Both the upper-in-place inductive switch and the upper-limit inductive switch are inductive proximity switches, which realize non-contact control by using the principle of electromagnetic induction, reduce mechanical wear, reduce maintenance requirements, and improve the response speed and accuracy at the same time;

[0018] (2) Adding an anti-overhead mechanical limit switch: The newly added anti-overhead mechanical limit switch serves as a double protection, enhancing the safety redundancy of the system. Even in the case of control system or operation errors, it can effectively prevent the hoisting mechanism 100 from overhead, protecting the safety of equipment and personnel;

[0019] (3) A flexible and adjustable installation structure: Through the design of vertical sliders, horizontal sliders, and horizontal sliding grooves, fine adjustment of the inductive switch, mechanical switch, and induction plate is realized, which not only simplifies the installation and maintenance process, but also can adapt to different working heights and environmental changes. Especially considering the influence of different water levels, the adaptability and flexibility of the system are greatly improved;

[0020] (4) Enhanced installation stability and convenience: By introducing a movable bottom plate and guide rails, the installation height of limit switches at different water levels can be satisfied, and a quick locking mechanism is designed to quickly adjust the movable bottom plate, which is convenient to operate and has a fast adjustment speed;

[0021] In summary, the utility model effectively solves the problems existing in the original limit switches, such as cumbersome maintenance, difficult adjustment, large installation errors, insufficient monitoring, and unstable electrical connections. The newly designed induction switch bracket, induction plate bracket, and mechanical switch bracket provide reliable physical support for the precise operation of the limit switch and the anti-overrun mechanical switch, and provide a safer, more efficient, and intelligent solution for the anti-collision warning system. Brief Description of the Drawings

[0022] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model and do not constitute a limitation to the utility model. In the drawings:

[0023] Figure 1 is a schematic structural diagram of an existing anti-collision warning system;

[0024] Figure 2 is a schematic structural diagram of a limit protection device of a ship lock anti-collision warning system of the utility model;

[0025] Figure 3 is an exploded view of a limit protection device of a ship lock anti-collision warning system of the utility model;

[0026] Figure 4 is an axonometric view of the movable bottom plate;

[0027] Figure 5 is a schematic structural diagram of the quick locking mechanism;

[0028] Figure 6 is a schematic diagram of the positions of the guiding long holes and guide posts. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0030] The following further describes the utility model in detail in conjunction with the embodiments.

[0031] Specific Embodiment 1 of a Limit Protection Device of a Ship Lock Anti-Collision Warning System Provided by the Utility Model:

[0032] As Figure 2 and Figure 3 shown, a limit protection device for a ship lock anti-collision warning system includes an induction switch bracket 1, an induction plate bracket 2, and a mechanical switch bracket 3. The induction switch bracket 1 and the mechanical switch bracket 3 are both installed on the ship lock wall; the movable wire rope bracket 101 has a maintenance platform 4, and the induction plate bracket 2 is installed on the maintenance platform 4;

[0033] Two vertical sliding holes 5 are provided on the induction switch bracket 1, and two first horizontal sliding holes 6 are provided on the induction plate bracket 2. The two first horizontal sliding holes 6 are arranged side by side in the horizontal direction;

[0034] An installation plate 7 is provided on the induction switch bracket 1. The installation plate 7 is installed on the two vertical sliding holes 5 through a plurality of bolt connection pairs. The installation plate 7 is used to install an upper-in-place induction switch 8 and an upper limit induction switch 9. The upper limit induction switch 9 is located above the upper-in-place induction switch 8. An induction plate 10 is provided on the induction plate bracket 2. The induction plate 10 is installed on the two first horizontal sliding holes 6 through a plurality of bolt connection pairs. The induction plate 10 is of an L-shaped structure, and the side of the induction plate 10 faces the installation plate 7;

[0035] The mechanical switch bracket 3 is located above the induction switch bracket 1. Two second horizontal sliding holes 11 are provided on the mechanical switch bracket 3. The two second horizontal sliding holes 11 are arranged side by side in the vertical direction. An anti-overrun mechanical limit switch 12 is provided on the mechanical switch bracket 3. The anti-overrun mechanical limit switch 12 is installed on the two second horizontal sliding holes 11 through bolts and nuts. As the movable wire rope bracket 101 rises, the induction plate 10 touches the contact rod of the anti-overrun mechanical limit switch 12, thereby triggering the limit signal of the anti-overrun mechanical limit switch 12.

[0036] In this embodiment, both the induction switch bracket 1 and the mechanical switch bracket 3 are installed on the lock wall of the ship lock. By moving the mounting plate 7 on the vertical sliding hole 5, the limit heights of the upper-in-place induction switch 8 and the upper limit induction switch 9 can be finely adjusted. When installing, the height of the mounting plate 7 needs to be calculated accurately; the induction plate 10 can slide on the first horizontal sliding hole 6 to adjust the induction distance from the upper-in-place induction switch 8 and the upper limit induction switch 9; the upper-in-place induction switch 8 and the upper limit induction switch 9 are connected to the total controller of the anti-collision warning device. When the anti-collision warning device is operating normally, the induction plate 10 rises with the movable wire rope bracket 101. When the induction plate 10 reaches the position of the upper-in-place induction switch 8, the upper-in-place induction switch 8 triggers the upper-in-place signal and transmits the upper-in-place signal to the total controller, and the total controller commands the hoisting mechanism 100 to stop working; if the upper-in-place signal is not triggered normally and in time, the movable wire rope bracket 101 continues to rise, the induction plate 10 reaches the position of the upper limit induction switch 9, the upper limit induction switch 9 triggers the upper limit signal, and the total controller commands the drum motor of the hoisting mechanism 100 to brake to prevent the anti-collision warning system from rising further. Preferably, both the upper-in-place induction switch 8 and the upper limit induction switch 9 are inductive proximity switches.

[0037] In addition, if the operation is improper, it may cause the movable wire rope bracket 101 to collide with the hoisting mechanism 100, resulting in the problem of over-travel. The over-travel problem poses a safety hazard and may even lead to safety accidents. Therefore, on the basis of setting the upper-in-place induction switch 8 and the upper limit induction switch 9, it is necessary to add an anti-over-travel limit switch as the last reliable protection for enhancing the operation safety of the anti-collision device. The anti-over-travel limit switch must be a mechanical limit switch with high reliability and stability. The anti-over-travel mechanical limit switch 12 uses a mechanical proximity switch. When installing the anti-over-travel mechanical limit switch 12, it must be higher than the adjustable range of the two induction switches, and at the same time, it should be ensured that the width of the induction plate 10 can trigger the anti-over-travel mechanical limit switch 12 and the two induction switches. The anti-over-travel mechanical limit switch 12 is located above the upper limit induction switch 9. When the induction plate 10 rises and does not trigger the upper-in-place signal and the upper limit signal in time, the movable wire rope bracket continues to rise under the pulling of the hoisting mechanism 100. At this time, the induction plate 10 will touch the swing rod of the anti-over-travel mechanical limit switch 12, triggering the anti-over-travel signal, and the total controller commands the hoisting mechanism 100 to stop working and the movable wire rope bracket 101 to stop rising, thus solving the over-travel problem.

[0038] Specific embodiment 2 of the limit protection device for the anti-collision warning system of a ship lock provided by the present utility model:

[0039] The difference from Specific Embodiment 1 is that the positions of the mechanical switch bracket 3 and the induction switch bracket 1 in this embodiment can both be adjusted to meet the installation height required by the limit switch at different water levels. Specifically, two guide rails 13 are installed on the lock wall of the ship lock, and a movable bottom plate 14 is installed between the two guide rails 13. The movable bottom plate 14 can move vertically along the two guide rails 13, and a vertical movement guiding component can also be set. For example, as Figure 6 shown, guiding long holes 28 are formed in both of the two guide rails 13, and a plurality of guide posts 29 are arranged on both sides of the movable bottom plate 14. The guide posts 29 on both sides of the movable bottom plate 14 are located in the guiding long holes 28 of the two guide rails 13. As the movable bottom plate 14 moves up and down, the guide posts 29 slide in the guiding long holes 28, finally realizing the vertical movement guiding and horizontal limiting of the movable bottom plate 14.

[0040] A quick locking mechanism is further arranged between the movable bottom plate 14 and the guide rail 13, and the quick locking mechanism is used to fix the relative position between the movable bottom plate 14 and the guide rail 13. The mechanical switch bracket 3 and the induction switch bracket 1 are both installed on the movable bottom plate 14. The relative height between the mechanical switch bracket 3 and the induction switch bracket 1 cannot be adjusted, but by moving the movable bottom plate 14 on the guide rail 13, their heights can be adjusted, and the maximum adjustment range is 0 - 0.6 m to meet the installation height required by the limit switch at different water levels, and the movable bottom plate 14 is quickly fixed through the quick locking mechanism.

[0041] In addition, a plurality of transverse sliding grooves 15 can be arranged on the movable bottom plate 14. All the transverse sliding grooves 15 are arranged side by side up and down. A plurality of sliding seats 16 are arranged in each transverse sliding groove 15. The sliding seats 16 can slide in the transverse sliding grooves 15. Threaded holes are formed in the sliding seats 16. The mechanical switch bracket 3 and the induction switch bracket 1 are both installed on the transverse sliding grooves 15 through bolts, and the bolts are threadedly installed in the threaded holes of the sliding seats 16. The mechanical switch bracket 3 and the induction switch bracket 1 can move on the transverse sliding grooves 15 through the sliding seats 16 to adjust the horizontal positions of the anti-overstroke mechanical limit switch 12 and the two groups of induction switches, ensuring that the induction plate 10 can trigger the anti-overstroke mechanical limit switch 12 and the two groups of induction switches.

[0042] In order to conveniently and quickly adjust the position of the movable bottom plate 14 on the guide rail 13, as Figure 4 and Figure 5As shown in the figure, the quick locking mechanism of this embodiment includes a threaded sleeve 17, a driving block 18 and two pressing blocks 19. The movable bottom plate 14 is in a box structure. The quick locking mechanism is arranged inside the movable bottom plate 14. A track 20 is fixed inside the movable bottom plate 14. The track 20 is arranged in the vertical direction. The driving block 18 is installed on the track 20 and can slide on the track 20. The outer shape of the driving block 18 is an isosceles trapezoid. The two pressing blocks 19 are located on both sides of the driving block 18. Two positioning columns 21 are fixed inside the movable bottom plate 14. Two guiding holes 22 are formed on the pressing blocks 19. The two positioning columns 21 are respectively inserted into the two guiding holes 22. The positioning columns 21 can slide relatively in the guiding holes 22. The outer shape of the pressing block 19 is a right trapezoid. A sliding groove is formed on the hypotenuse waist of the pressing block 19. Two edges 23 adapted to the sliding groove are arranged on both waists of the driving block 18. The two edges 23 of the driving block 18 respectively slide through the sliding grooves of the two pressing blocks 19. The edge 23 can slide relatively in the sliding groove;

[0043] Notches 24 are formed on the opposite sides of the movable bottom plate 14. The straight-edge waists of the two pressing blocks 19 respectively correspond to the two notches 24. The threaded sleeve 17 is fixed inside the movable bottom plate 14 by screws. The threaded sleeve 17 has internal threads. A lead screw 25 is arranged inside the threaded sleeve 17. The lead screw 25 is in threaded cooperation with the threaded sleeve 17. The lower end of the lead screw 25 is installed on the top of the driving block 18 in a rotational manner. This rotational manner can be a bearing. And the lower end of the lead screw 25 is fixedly connected to the inner ring of the bearing. A handwheel 26 is arranged at the upper end of the lead screw 25.

[0044] When it is necessary to adjust the position of the movable bottom plate 14 on the guide rail 13, first rotate the handwheel 26. The lead screw 25 rotates and moves upward in the threaded sleeve 17. The lead screw 25 pulls the driving block 18 upward. The driving block 18 pulls the two pressing blocks 19 toward the middle through the cooperation between the edge 23 and the sliding groove, so that the straight-edge waists of the pressing blocks 19 are retracted from the notches 24 into the movable bottom plate 14. At this time, the pressing force between the pressing block 19 and the guide rail 13 is released, and the movable bottom plate 14 can be moved. After moving to the appropriate position, rotate the handwheel 26 again. The lead screw 25 pushes the driving block 18 downward. The driving block 18 pushes the two pressing blocks 19 toward both sides. The straight-edge waists of the two pressing blocks 19 extend out of the notches 24 and finally press on the guide rail 13. Through the pressing force between the two pressing blocks 19 and the two guide rails 13, the position fixing of the movable bottom plate 14 relative to the guide rail 13 can be completed.

[0045] A rubber pad 27 can also be arranged on the straight-edge waist of the pressing block 19 to increase the friction between the pressing block 19 and the guide rail 13, improve the pressing force, and avoid the displacement of the movable base.

[0046] It should be noted that, in this text, terms such as "including", "comprising", or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article, or device.

[0047] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A limit protection device for a lock anti-collision warning system, characterized in that: It includes an induction switch bracket and an induction plate bracket. The induction switch bracket is installed on the lock wall of the ship lock; the movable wire rope bracket has a maintenance platform, and the induction plate bracket is installed on the maintenance platform; Two vertical sliding holes are opened on the induction switch bracket, and two first horizontal sliding holes are opened on the induction plate bracket. The two first horizontal sliding holes are arranged side by side in the horizontal direction; An installation plate is arranged on the induction switch bracket. The installation plate is installed on the two vertical sliding holes through a plurality of bolt connection pairs. The installation plate is used to install the upper-in-place induction switch and the upper limit induction switch. The upper limit induction switch is located above the upper-in-place induction switch. An induction plate is arranged on the induction plate bracket. The induction plate is installed on the two first horizontal sliding holes through a plurality of bolt connection pairs. The induction plate is of an L-shaped structure and faces the side of the installation plate.

2. The limit protection device of a ship lock anti-collision warning system according to claim 1, characterized in that: It also includes a mechanical switch bracket. The mechanical switch bracket is installed on the lock wall of the ship lock and is located above the induction switch bracket. Two second horizontal sliding holes are opened on the mechanical switch bracket. The two second horizontal sliding holes are arranged side by side in the vertical direction. An anti-overtravel mechanical limit switch is arranged on the mechanical switch bracket. The anti-overtravel mechanical limit switch is installed on the two second horizontal sliding holes through bolts and nuts.

3. The limit protection device of a ship lock anti-collision warning system according to claim 2, characterized in that: Both the upper-in-place induction switch and the upper limit induction switch are inductive proximity switches.

4. The limit protection device of a ship lock anti-collision warning system according to claim 3, characterized in that: Two guide rails are installed on the lock wall of the ship lock. A movable bottom plate is installed between the two guide rails. The movable bottom plate can move vertically on the two guide rails. A quick locking mechanism is also arranged between the movable bottom plate and the guide rails. The quick locking mechanism is used to fix the relative position between the movable bottom plate and the guide rails; both the mechanical switch bracket and the induction switch bracket are installed on the movable bottom plate.

5. The limit protection device of a ship lock anti-collision warning system according to claim 4, characterized in that: A plurality of transverse sliding grooves are arranged on the movable bottom plate. All the transverse sliding grooves are arranged side by side up and down. A plurality of sliding seats are arranged in each transverse sliding groove. The sliding seats can slide in the transverse sliding grooves. Threaded holes are arranged on the sliding seats. Both the mechanical switch bracket and the induction switch bracket are installed on the transverse sliding grooves through bolts. The bolts are threadedly installed in the threaded holes of the sliding seats.

6. The limit protection device of a ship lock anti-collision warning system according to claim 5, characterized in that: The movable bottom plate is of a box structure. The quick locking mechanism is arranged inside the movable bottom plate. The quick locking mechanism includes a threaded sleeve, a driving block and two pressing blocks. A track is fixed inside the movable bottom plate. The track is arranged in the vertical direction. The driving block is installed on the track and can slide on the track. The outer shape of the driving block is an isosceles trapezoid. The two pressing blocks are located on both sides of the driving block. Two positioning columns are fixed inside the movable bottom plate. Two guiding holes are opened on the pressing blocks. The two positioning columns are respectively inserted into the two guiding holes. The positioning columns can slide relatively in the guiding holes. The outer shape of the pressing block is a right trapezoid. A sliding groove is opened on the hypotenuse waist of the pressing block. Two edges adapted to the sliding groove are arranged on both waists of the driving block. The two edges of the driving block respectively slide through the sliding grooves of the two pressing blocks. The edges can slide relatively in the sliding grooves; Notches are formed on opposite sides of the movable bottom plate. The straight-edge waists of the two pressing blocks respectively correspond to the two notches. The threaded sleeve is fixed in the movable bottom plate by screws. The threaded sleeve has internal threads, and a lead screw is arranged inside the threaded sleeve. The lead screw is in threaded cooperation with the threaded sleeve. The lower end of the lead screw is installed on the top of the driving block in a rotatable manner, and a handwheel is arranged at the upper end of the lead screw.

7. The limit protection device of a ship lock anti-collision warning system according to claim 6, characterized in that: A rubber pad is arranged on the straight-edge waist of the pressing block.

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