Intelligent safety inspection equipment for boarding ladder and use method

Abstract

The invention discloses intelligent safety inspection equipment for a boarding ladder and a using method, and relates to the technical field of inspection equipment, the intelligent safety inspection equipment comprises a ship body, a ship ladder, an inspection channel, an inspection robot, a lubricating mechanism and a supporting mechanism, the ship ladder is arranged at a deck on one side of the ship body, and the ship ladder comprises a set of air cylinders, a plurality of hinge frames, a pedal and a telescopic handrail; the inspection road is arranged between the ship body and the ship ladder and keeps consistent with the telescopic direction of the ship ladder, the inspection robot is placed on the inspection road, and the supporting mechanism is arranged on the upper side of the inspection road; the lubricating mechanism comprises an oil tank and a plurality of oil pipes, each oil pipe is of a hollow structure, three sets of lubricating assemblies are arranged at the hinged position, matched with the hinged frame, of each oil pipe, and each lubricating assembly comprises a rotating frame, a semi-ball valve block, a telescopic rod and a sponge body. The telescopic state of the ship ladder can be detected, lubrication and emergency supporting are provided, and safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of inspection equipment, and in particular to an intelligent safety inspection equipment for a boarding ladder and a use method thereof. Background Art

[0002] As an important connecting device between the ship and the dock, the safety and maintenance efficiency of the boarding ladder are crucial to ensure the safe transfer of personnel and materials. For small ships, folding steel structure ladders are generally used. The design of folding ship ladders focuses on the effective use of space and the convenience of operation, and can be folded up when not needed.

[0003] Inspection equipment is a tool or system used to regularly inspect and maintain equipment to ensure its normal operation. They play an important role in different industries and fields, such as manufacturing, energy industry, transportation, etc.

[0004] The pedals of the foldable ship ladder are hinged to the connecting parts on both sides. Due to the influence of the use environment, the connecting parts of the foldable ship ladder, such as hinges and pins, may rust, get stuck or wear due to long-term use and environmental factors (such as seawater corrosion and weather changes), affecting the stability and safety of the ship ladder. At present, the safety inspection of the foldable ship ladder is basically carried out by the staff, and minor problems cannot be discovered in time. The inspection equipment can make up for this deficiency, so a kind of inspection equipment that can be used exclusively for boarding ladders is needed. Summary of the invention

[0005] The object of the present invention is to provide an intelligent safety inspection device for a boarding ladder and a method of use to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: an intelligent safety inspection device for a boarding ladder and a method of use, comprising a hull, a ladder, an inspection road, an inspection robot, a lubrication mechanism and a support mechanism, wherein the ladder is arranged on a deck on one side of the hull, the ladder comprises a group of cylinders, a plurality of articulated frames, pedals and telescopic handrails, the inspection road is arranged between the hull and the ladder and is consistent with the telescopic direction of the ladder, the inspection robot is placed on the inspection road, and the support mechanism is arranged on the upper side of the inspection road.

[0007] According to the above technical scheme, the lubrication mechanism includes an oil tank and several oil pipes, wherein the oil tank is fixed on the lower side of the hull deck, the oil pipes are arranged on both sides of the corresponding pedals and are connected to the oil tank with oil pipes, two connecting sleeves are provided on the oil pipes, the connecting sleeves are connected and fixed to the pedals, the oil pipes are hollow structures and three groups of lubrication components are arranged at the hinged positions of the articulated frames, the lubrication components include a rotating frame, a hemispherical valve block, a telescopic rod and a sponge body, wherein one end of the rotating frame is connected and fixed to the corresponding articulated frame, the other end of the rotating frame is penetrated into the oil pipe and rotates therewith, the hemispherical valve block is fixed on one end of the rotating frame facing the oil pipe and the outer diameter of the hemispherical valve block matches the inner diameter of the oil pipe, the telescopic rod is fixed on the inner side of the rotating frame, and the sponge body is arranged in the telescopic rod.

[0008] According to the above technical solution, the inspection robot is provided with a visual detection module 1 for monitoring the status of the ship ladder during its extension and retraction process.

[0009] According to the above technical solution, the oil tank contains lubricating oil and is provided with oil delivery ports that are the same in number as the oil pipes. Each oil delivery port is connected to a corresponding oil pipe, and the oil pipes are provided with two oil inlets opposite to each other.

[0010] According to the above technical solution, the oil tank is provided with a total oil chamber, several oil pumps, an oil circuit and a liquid level detection chamber, wherein the liquid level detection chamber is connected to each of the oil pipelines, and the liquid level detection chamber is equipped with a liquid level detection module for detecting the reduction of the lubricating oil before and after lubrication, the oil circuit connects the total oil chamber with the corresponding liquid level detection chamber, the oil pump is arranged at the end of the oil circuit, and is used for quantitatively delivering the lubricating oil in the total oil chamber to the liquid level detection chamber, and the oil pipeline is provided with an oil pump 2, which is used for delivering the lubricating oil in the liquid level detection chamber to the oil pipeline and pumping the remaining lubricating liquid back to the liquid level detection chamber.

[0011] According to the above technical solution, a chain rail is laid on the inspection road to guide the inspection robot to move along the set route and assist the inspection robot to stay on the slope.

[0012] According to the above technical solution, the support mechanism includes a support frame, several groups of first support rods, second support rods and a driving module, wherein the support frame is fixed on the inspection road, and the two ends of the first support rod and the second support rod are respectively connected to the support frame and the hull, and each group of the first support rod and the second support rod are arranged in parallel and located at the lower side of the pedal after the ship ladder is extended, and a driving shaft and an extension rod are arranged in the first support rod and the second support rod, one end of the driving shaft is rotatably matched with the hull, and the extension rod is sleeved on the outside of the driving shaft and threadedly matched with it, and the first support rod and the second support rod corresponding to the extension rod are slidably matched, and the driving shafts of the first support rod and the second support rod are connected by a pulley, and the driving shaft of the first support rod is connected to the driving module by a pulley.

[0013] According to the above technical solution, the driving module includes a rotating rod, a group of driven gears, a driven pulley, a driving gear and a motor, wherein the rotating rod rotates on the lower side of the inspection path, the driven gear is arranged at one end of the rotating rod and is located in the center of the inspection path, the driven pulley is arranged at the other end of the rotating rod and is connected to the driving shaft belt of the first support rod, the motor is arranged on the inspection robot, and the driving gear is sleeved on the driving end of the motor.

[0014] According to the above technical solution, a mounting plate is provided on one side of the inspection robot, a slide plate is provided inside the mounting plate, the slide plate is connected to an electric push rod, and a visual inspection module 2 is provided on the lower side of the slide plate to assist the docking of the driven gear with the driving gear.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing an inspection robot and a lubrication mechanism, can detect and analyze the telescopic state of the ship ladder, lubricate the positions where jamming and slow rotation occur, and determine whether maintenance is needed based on the amount of lubricating oil consumed at one time, thereby improving flexibility; by providing a support mechanism, when the inspection robot determines that the articulated frame is loose, the corresponding pedal can be urgently supported, and maintenance can be performed by personnel, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial schematic diagram of the present invention; Figure 3 It is a schematic diagram of the installation position of the oil pipe of the present invention; Figure 4 is a schematic diagram of the lubrication mechanism of the present invention; Figure 5 is a schematic diagram of a lubrication assembly of the present invention; Figure 6 is a partial cross-sectional view of the lubrication assembly of the present invention; Figure 7 It is a schematic diagram of the hemispherical valve block in the retracted state of the ship ladder of the present invention; Figure 8 It is a schematic diagram of the hemispherical valve block in the extended state of the ship ladder of the present invention; Fig. 9 is a schematic diagram of the support mechanism of the present invention; Fig.10 is a partial cross-sectional view of the first support rod and the second support rod of the present invention; Fig.11 is a schematic diagram of a second support rod of the present invention; Fig.12 is a schematic diagram of a driving module of the present invention; Fig.13 is a schematic diagram of the inspection robot of the present invention; In the figure: 1. Hull; 2. Ladder; 21. Cylinder; 22. Articulated frame; 23. Pedal; 24. Telescopic handrail; 3. Inspection road; 31. Chain track; 4. Inspection robot; 41. Visual inspection module 1; 42. Mounting plate; 43. Slide plate; 44. Electric push rod; 45. Visual inspection module 2; 46. Lubrication box; 5. Oil tank; 50. Oil delivery port; 51. Total oil chamber; 52. Oil pump 1; 53. Oil circuit; 54. Liquid level detection chamber; 6. Oil Tube; 61, connecting sleeve; 62, rotating frame; 63, hemispherical valve block; 64, telescopic rod; 65, sponge; 66, oil inlet; 7, oil pipeline; 71, oil pump 2; 81, support frame; 82, first support rod; 83, second support rod; 84, drive module; 841, rotating rod; 842, driven gear; 843, driven pulley; 844, driving gear; 845, motor; 85, drive shaft; 86, extension rod; 861, slider. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-13The present invention provides a technical solution: an intelligent safety inspection device for a boarding ladder and a method of use, comprising a hull 1, a ladder 2, an inspection path 3, an inspection robot 4, a lubrication mechanism and a support mechanism, the ladder 2 is arranged on a deck on one side of the hull 1, the ladder 2 comprises a group of cylinders 21, a plurality of articulated frames 22, a pedal 23 and a telescopic handrail 24, the inspection path 3 is arranged between the hull 1 and the ladder 2 and is consistent with the telescopic direction of the ladder 2, the inspection robot 4 is placed on the inspection path 3, and the support mechanism is arranged on the upper side of the inspection path 3; The lubrication mechanism includes an oil tank 5 and a plurality of oil pipes 6, wherein the oil tank 5 is fixed on the lower side of the deck of the hull 1, the oil pipes 6 are arranged on both sides of the corresponding pedals 23 and are connected to the oil tank 5 with oil pipes 7, two connecting sleeves 61 are sleeved on the oil pipes 6, the connecting sleeves 61 are connected and fixed to the pedals 23, the oil pipes 6 are hollow structures and three groups of lubrication components are arranged at the hinged positions of the articulated frames 22, the lubrication components include a rotating frame 62, a hemispherical valve block 63, a telescopic rod 64 and a sponge 65, wherein one end of the rotating frame 62 is connected and fixed to the corresponding articulated frame 22, the other end of the rotating frame 62 is penetrated in the oil pipe 6 and rotates therewith, the hemispherical valve block 63 is fixed on one end of the rotating frame 62 facing the oil pipe 6 and the outer diameter of the hemispherical valve block 63 matches the inner diameter of the oil pipe 6, the telescopic rod 64 is fixed on the inner side of the rotating frame 62, and the sponge 65 is arranged in the telescopic rod 64.

[0019] The inspection robot 4 is provided with a visual detection module 41 for monitoring the status of the ship ladder 2 during the extension and retraction process.

[0020] Supplementary explanations based on the above structure are as follows: the structural connection of the ship ladder 2 is consistent with the conventional setting. In this case, the fixed end of the cylinder 21 is installed on the lower side of the deck, and the driving end is connected to the articulated frame 22 to drive the extension and retraction of the ship ladder 2; The oil tank 5 contains lubricating oil and is provided with oil delivery ports 50 of the same number as the oil pipes 6. Each oil delivery port 50 is connected to a corresponding oil pipe 6. Preferably, the oil pipe 6 is provided with two oil inlets 66 at opposite locations. The sponge 65 corresponds to the hinged position of the hinged frame 22, and the sponge 65 is used to soak the lubricating oil and apply the hinged position, and the telescopic rod 64 is used to support the sponge 65 while leaving room for movement; In one embodiment, Figure 7-8As shown, the ship ladder 2 in the retracted state is in the initial state, the spherical surfaces of the hemispherical valve blocks 63 on both sides of the oil pipe 6 are biased toward the upper side, and the spherical surface of the hemispherical valve block 63 in the middle is biased toward either the left or right side. If lubricating oil is injected at this time, each sponge 65 can smoothly contact and absorb the lubricating oil, thereby lubricating the hinge; the extension process of the ship ladder 2 is also the process of each hemispherical valve block 63 cutting off the contact between the lubricating oil and the sponge 65. In the fully extended state, the spherical surfaces of the hemispherical valve blocks 63 on both sides of the oil pipe 6 are facing the hemispherical valve block 63 in the middle, and the spherical surface of the hemispherical valve block 63 in the middle is facing the bottom of the oil pipe 6. The hemispherical valve block 63 cuts off the contact between the lubricating oil and the sponge 65. In order to avoid interference, the default amount of lubricating oil input should be no more than half of the diameter width of the hemispherical valve block 63. If the hinge of the articulated frame 22 is rusted, it will cause the ship ladder 2 to be difficult to operate, and the contact time between the lubricating oil and the sponge 65 will be prolonged. The lubrication time can be extended autonomously according to actual conditions.

[0021] like Figure 4 As shown, the oil tank 5 is provided with a total oil chamber 51, a plurality of oil pumps 52, an oil circuit 53 and a liquid level detection chamber 54, wherein the liquid level detection chamber 54 is connected to each oil pipeline 7, and the liquid level detection chamber 54 is equipped with a liquid level detection module for detecting the reduction of the lubricating oil before and after lubrication. The oil circuit 53 connects the total oil chamber 51 with the corresponding liquid level detection chamber 54, and the oil pump 52 is arranged at the end of the oil circuit 53 for quantitatively transporting the lubricating oil in the total oil chamber 51 to the liquid level detection chamber 54. The oil pipeline 7 is provided with an oil pump 2 71 for transporting the lubricating oil in the liquid level detection chamber 54 to the oil pipeline 7 and pumping the remaining lubricating liquid back to the liquid level detection chamber 54.

[0022] A chain track 31 is laid on the inspection road 3 to guide the inspection robot 4 to move along the set route and assist the inspection robot 4 to stay on the slope.

[0023] like Figures 9-11 As shown, the support mechanism includes a support frame 81, several groups of first support rods 82, second support rods 83 and a driving module 84, wherein the support frame 81 is fixed on the inspection road 3, and the first support rod 82 and the second support rod 83 are respectively connected to the support frame 81 and the hull 1 at both ends, and each group of the first support rod 82 and the second support rod 83 are arranged in parallel and located at the lower side direction of the pedal 23 after the ship ladder 2 is extended, and the first support rod 82 and the second support rod 83 are both provided with a driving shaft 85 and an extension rod 86, one end of the driving shaft 85 is rotatably matched with the hull 1, the extension rod 86 is sleeved on the outside of the driving shaft 85 and threadedly matched therewith, and the first support rod 82 and the second support rod 83 corresponding to the extension rod 86 are slidably matched, and the driving shafts 85 of the first support rod 82 and the second support rod 83 are connected by a pulley, and the driving shaft 85 of the first support rod 82 is connected to the driving module 84 by a pulley.

[0024] In actual operation, the extension rod 86 is provided with a slider 861, and the first support rod 82 and the second support rod 83 cooperate with the slider 861 to form a slide rail. When the drive shaft 85 rotates, the extension rod 86 extends along the slide rail to the lower side of the pedal 23 to play an emergency support role.

[0025] The driving module 84 includes a rotating rod 841, a group of driven gears 842, a driven pulley 843, a driving gear 844 and a motor 845, wherein the rotating rod 841 rotates on the lower side of the inspection path 3, the driven gear 842 is arranged at one end of the rotating rod 841 and is located in the center of the inspection path 3, the driven pulley 843 is arranged at the other end of the rotating rod 841 and is connected to the driving shaft 85 of the first support rod 82 by a belt, the motor 845 is arranged on the inspection robot 4, and the driving gear 844 is sleeved on the driving end of the motor 845.

[0026] Further, such as Fig.13 As shown, a mounting plate 42 is provided on one side of the inspection robot 4, a slide plate 43 is provided inside the mounting plate 42, the slide plate 43 is connected to an electric push rod 44, and a visual inspection module 2 45 is provided on the lower side of the slide plate 43 for assisting the docking of the driven gear 842 and the driving gear 844.

[0027] In actual operation, the driving gear 844 is set in the middle position of the inspection robot 4, corresponding to the driven gear 842. The electric push rod 44 is used to adjust the height of the driving gear 844. The height of each group of driven gears 842 should be higher than the surface of the inspection road 3. During general inspection operations, the driving gear 844 is located higher than the driven gear 842. When emergency processing is required, the inspection robot 4 stays at the corresponding driven gear 842, and the driving gear 844 is docked with the driven gear 842 through the electric push rod 44 and the visual inspection module 2 45.

[0028] Preferably, in one embodiment, a lubrication box 46 is provided on the upper side of the sliding plate 43 relative to the driving gear 844 , and the lubrication box 46 is connected to the upper side of the driving gear 844 for delivering lubricating oil to reduce wear when the driving gear 844 and the driven gear 842 are docked.

[0029] The specific implementation is as follows: Step 1: The ship 1 is anchored at the shore, the ship ladder 2 begins to extend, and the inspection robot 4 moves to the inspection path 3 and moves along the chain track 31. During this period, the inspection robot 4 detects the rotation state of each articulated frame 22; Step 2: According to the rotation state of the articulated frame 22, the inspection robot 4 determines whether lubrication is required and positions the required articulated frame 22; Step 3: The inspection robot 4 sends a lubrication signal to the oil tank 5, and the oil tank 5 locks the corresponding oil pump 1 52 to input a certain amount of lubricating oil into the liquid level detection chamber 54, and the oil pump 2 71 then pumps the oil in the liquid level detection chamber 54 into the corresponding oil pipe 6; Step 4: After the ladder 2 is extended, the oil pump 2 71 extracts the remaining oil in the oil pipe 6 to the liquid level detection chamber 54 for recording, and personnel begin to board the ship. During this period, the inspection robot 4 checks the status of the ladder 2 to determine whether there are potential safety hazards and locates the corresponding pedal 23; Step 4-1: The inspection robot 4 moves to the corresponding driving module 84, docks the driving gear 844 with the driven gear 842, drives the driving shaft 85 of the first support rod 82 and the second support rod 83 to rotate, and extends the extension rod 86 to support the lower side of the pedal 23, and notifies the relevant personnel to carry out maintenance; Step 5: After boarding is completed, the ship ladder 2 begins to retract, during which the inspection robot 4 locks the lubricated articulated frame 22, analyzes the retracted state, and determines whether maintenance is required.

[0030] Specifically, in step 2, the inspection robot 4 determines the lubrication requirement in the following manner: the inspection robot 4 captures the position of the articulated frame 22, records the rotation angle and speed, the rotation angle of the articulated frame 22 is obtained by measuring the angle change between the articulated frame 22 and the pedal 23, and the rotation speed is obtained by combining the angle change per unit time, which is compared with the normal rotation state to analyze whether there is a jam or slow rotation. For example, if the articulated frame 22 does not rotate within a unit time, it can be judged that a jam occurs; if the rotation angle of the articulated frame 22 within two unit times is less than the rotation angle of the articulated frame 22 within a unit time under normal conditions, it can be judged that the rotation is too slow. The inspection robot 4 notifies the lubrication mechanism to deliver lubricating oil.

[0031] In step 4, the liquid level detection chamber 54 calculates and compares the oil consumption before and after lubrication, sets the amount of lubricating oil input once as a fixed value A, and the amount of oil recovered after the ship ladder 2 is extended as B. The calculation is performed based on the liquid level height to determine whether the oil consumption (Q=AB) is in the ideal range C. If Q is less than or equal to C, the state of the articulated frame 22 is within the normal range, and only lubrication can be performed. If Q is greater than C, the state of the articulated frame 22 is not ideal and needs to be repaired. The oil consumption is related to the rotation speed of the articulated frame 22. The articulated frame 22 in an unideal state takes a long time to rotate to the final state, and the time for the corresponding hemispherical valve block 63 to cut off the lubricating oil increases accordingly, and the consumption of the lubricating oil increases accordingly.

[0032] The inspection robot 4 determines the support requirement as follows: during the inspection process, the inspection robot 4 records the axial position of the connection between each articulated frame 22 and the pedal 23. During the extension and retraction process of the ship ladder 2, if the axial position is offset and the offset is greater than the set error margin, the inspection robot 4 determines that there is a problem with the connection of the articulated frame 22 and emergency support is required.

[0033] In step 4-1, the visual inspection module 2 45 is used to lock the side tooth position of the corresponding driven gear 842, and the motor 845 fine-tunes the side tooth position of the driving gear 844 to ensure that the upper and lower parts can be docked, and then the lubrication box 46 delivers lubricating oil to the surface of the driving gear 844. When the visual inspection module 2 45 observes that the lubricating oil can drip onto the surface of the driven gear 842, the electric push rod 44 starts to move down for splicing.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent safety inspection device for a boarding ladder, comprising a hull (1), a ladder (2), an inspection path (3), an inspection robot (4), a lubrication mechanism and a support mechanism, characterized in that: The ship ladder (2) is arranged on a deck on one side of the hull (1), the ship ladder (2) comprises a group of cylinders (21), a plurality of articulated frames (22), pedals (23) and a telescopic handrail (24), the inspection path (3) is arranged between the hull (1) and the ship ladder (2) and is consistent with the telescopic direction of the ship ladder (2), the inspection robot (4) is placed on the inspection path (3), and the support mechanism is arranged on the upper side of the inspection path (3); The lubrication mechanism comprises an oil tank (5) and a plurality of oil pipes (6), wherein the oil tank (5) is fixed to the lower side of the deck of the hull (1), the oil pipes (6) are arranged on both sides of the corresponding pedals (23) and are connected to the oil tank (5) via oil delivery pipes (7), the oil pipes (6) are sleeved with two connecting sleeves (61), the connecting sleeves (61) are connected and fixed to the pedals (23), the oil pipes (6) are hollow structures and are provided with three groups of lubrication components at the hinged position cooperating with the hinged frame (22); The lubrication assembly comprises a rotating frame (62), a hemispherical valve block (63), a telescopic rod (64) and a sponge (65), wherein one end of the rotating frame (62) is connected and fixed to the corresponding articulated frame (22), the other end of the rotating frame (62) is inserted into the oil pipe (6) and rotatably cooperates therewith, the hemispherical valve block (63) is fixed on one end of the rotating frame (62) facing the oil pipe (6) and the outer diameter of the hemispherical valve block (63) matches the inner diameter of the oil pipe (6), the telescopic rod (64) is fixed on the inner side of the rotating frame (62), and the sponge (65) is arranged inside the telescopic rod (64).

2. The intelligent safety inspection device for a boarding ladder according to claim 1 is characterized in that: The inspection robot (4) is provided with a visual inspection module 1 (41) for monitoring the state of the ship ladder (2) during its extension and retraction process.

3. The intelligent safety inspection device for a boarding ladder according to claim 2 is characterized in that: The ship ladder (2) in the retracted state is the initial state. The spherical surfaces of the hemispherical valve blocks (63) located on both sides of the oil pipe (6) are inclined to the upper side, and the spherical surface of the hemispherical valve block (63) located in the middle is inclined to either the left or right side. If lubricating oil is injected at this time, each sponge (65) can smoothly contact and absorb the lubricating oil, thereby lubricating the hinge. The extension process of the ship ladder (2) is also the process in which each hemispherical valve block (63) cuts off the contact between the lubricating oil and the sponge (65). In the fully extended state, the hemispherical valve blocks (63) located on both sides of the oil pipe (6) are The spherical surface of the ball valve block (63) faces the middle hemispherical valve block (63), and the spherical surface of the hemispherical valve block (63) in the middle faces the bottom of the oil pipe (6). The hemispherical valve block (63) cuts off the contact between the lubricating oil and the sponge (65). In order to avoid interference, the default amount of lubricating oil input should be no more than half of the diameter width of the hemispherical valve block (63). If the hinge of the hinge frame (22) is rusted, it will cause the ship ladder (2) to be difficult to operate, and the contact time between the lubricating oil and the sponge (65) will be prolonged. The lubrication time can be extended according to the actual situation.

4. The intelligent safety inspection device for a boarding ladder according to claim 3 is characterized in that: The oil tank (5) is provided with a total oil chamber (51), a plurality of oil pumps (52), an oil circuit (53) and a liquid level detection chamber (54), wherein the liquid level detection chamber (54) is connected to each of the oil delivery pipes (7), and the liquid level detection chamber (54) is provided with a liquid level detection module for detecting the reduction of lubricating oil before and after lubrication. The oil circuit (53) connects the total oil chamber (51) with the corresponding liquid level detection chamber (54), the oil pump (52) is provided at the end of the oil circuit (53) and is used for quantitatively delivering the lubricating oil in the total oil chamber (51) to the liquid level detection chamber (54), and the oil delivery pipe (7) is provided with an oil pump (71) for delivering the lubricating oil in the liquid level detection chamber (54) to the oil delivery pipe (7) and pumping the remaining lubricating liquid back to the liquid level detection chamber (54).

5. The intelligent safety inspection device for a boarding ladder according to claim 4 is characterized in that: The inspection path (3) is provided with a chain track (31) for guiding the inspection robot (4) to move along a set route and assisting the inspection robot (4) to stay on a slope.

6. The intelligent safety inspection device for a boarding ladder according to claim 5 is characterized in that: The support mechanism comprises a support frame (81), a plurality of groups of first support rods (82), second support rods (83) and a drive module (84), wherein the support frame (81) is fixed on the inspection path (3), the first support rods (82) and the second support rods (83) are respectively connected at both ends of the support frame (81) and the hull (1), and each group of the first support rods (82) and the second support rods (83) are arranged in parallel and are located at the lower side of the pedal (23) after the ship ladder (2) is extended; A driving shaft (85) and an extension rod (86) are provided inside the first support rod (82) and the second support rod (83); one end of the driving shaft (85) is rotatably matched with the hull (1); the extension rod (86) is sleeved on the outside of the driving shaft (85) and threadedly matched therewith; the first support rod (82) and the second support rod (83) corresponding to the extension rod (86) are slidably matched; the driving shafts (85) of the first support rod (82) and the second support rod (83) are connected via a pulley; and the driving shaft (85) of the first support rod (82) and the driving module (84) are connected via a pulley.

7. The intelligent safety inspection device for a boarding ladder according to claim 6 is characterized in that: The driving module (84) comprises a rotating rod (841), a group of driven gears (842), a driven pulley (843), a driving gear (844) and a motor (845), wherein the rotating rod (841) rotates on the lower side of the inspection path (3), the driven gear (842) is arranged at one end of the rotating rod (841) and is located in the middle of the inspection path (3), the driven pulley (843) is arranged at the other end of the rotating rod (841) and is connected to the driving shaft (85) of the first support rod (82) by a belt, the motor (845) is arranged on the inspection robot (4), and the driving gear (844) is sleeved on the driving end of the motor (845).

8. The intelligent safety inspection device for a boarding ladder according to claim 7 is characterized in that: A mounting plate (42) is provided on one side of the inspection robot (4), a slide plate (43) is provided inside the mounting plate (42), the slide plate (43) is connected to an electric push rod (44), and a second visual inspection module (45) is provided on the lower side of the slide plate (43).

9. The intelligent safety inspection device for a boarding ladder according to claim 8, characterized in that: A lubrication box (46) is provided on the upper side of the sliding plate (43) relative to the driving gear (844), and the lubrication box (46) is connected to the upper side of the driving gear (844).

10. A method for using an intelligent safety inspection device for a boarding ladder, which is implemented based on the intelligent safety inspection device for a boarding ladder according to claim 9, characterized in that: Step 1: the ship (1) is anchored at the shore, the ship ladder (2) begins to extend, and the inspection robot (4) moves to the inspection path (3) and moves along the chain track (31), during which the inspection robot (4) detects the rotation state of each articulated frame (22); Step 2: Based on the rotation state of the articulated frame (22), the inspection robot (4) determines whether lubrication is required and positions the required articulated frame (22); Step 3: The inspection robot (4) sends a lubrication signal to the oil tank (5), and the oil tank (5) locks the corresponding oil pump 1 (52) to input a certain amount of lubricating oil into the liquid level detection chamber (54), and the oil pump 2 (71) then pumps the oil in the liquid level detection chamber (54) into the corresponding oil pipe (6); Step 4: After the ladder (2) is extended, the oil pump 2 (71) extracts the remaining oil in the oil pipe (6) to the liquid level detection chamber (54) for recording, and personnel begin to board the ship. During this period, the inspection robot (4) checks the status of the ladder (2), determines whether there are potential safety hazards, and locates the corresponding pedal (23); Step 4-1: The inspection robot (4) moves to the corresponding drive module (84), connects the driving gear (844) with the driven gear (842), drives the driving shaft (85) of the first support rod (82) and the second support rod (83) to rotate, and extends the extension rod (86) to support the lower side of the pedal (23), and notifies relevant personnel to carry out maintenance; Step 5: After boarding is completed, the ship ladder (2) begins to retract, during which the inspection robot (4) locks the lubricated articulated frame (22) and analyzes the retracted state to determine whether maintenance is required.

Images