A motorized crew ladder

Abstract

The present invention discloses a mobile crew gangway, which has a transport state and an erection state, and includes a chassis, a mobile frame, a lifting platform assembly, a foldable gangway assembly and retractable legs; the mobile frame can be movably mounted on the chassis, and the bottom of the mobile frame is equipped with retractable legs; the lifting platform assembly and the foldable gangway assembly can both be movably mounted on the mobile frame; the foldable gangway assembly has a folded state and an extended state. The mobile crew gangway can ensure the safety of personnel getting on and off large ships, improve the speed of gangway erection, shorten the time of gangway erection, realize rapid erection and withdrawal, and better guarantee the needs of combat troops to quickly get on and off large ships without the need for auxiliary lifting equipment.

Description

Technical Field

[0001] The invention relates to the technical field of troop logistics support equipment, and in particular to a motorized ship crew gangway. Background Art

[0002] At present, when large ships are docked, a large gangway is usually installed for people on board to get on and off. However, when the ship is docked, the large gangway needs to be hoisted and installed by auxiliary lifting equipment, so that all large ships need to be equipped with auxiliary lifting equipment, and the installation and removal time is long and the speed is slow, which cannot meet the emergency needs in wartime. Summary of the invention

[0003] In view of this, the present invention provides a mobile crew ladder, which can ensure the safety of personnel getting on and off large ships, improve the speed of ladder erection, shorten the ladder erection time, realize rapid erection and withdrawal, and better guarantee the needs of combat troops to quickly get on and off large ships without the need for auxiliary lifting equipment.

[0004] The present invention adopts the following specific technical solutions:

[0005] A motorized crew gangway, the motorized crew gangway having a transport state and an erection state, and comprising a chassis vehicle, a mobile frame, a lifting platform assembly, a foldable gangway assembly and retractable legs;

[0006] The mobile frame can be movably mounted on the chassis vehicle, and a retractable leg is installed at the bottom of the mobile frame; the lifting platform assembly and the foldable gangway assembly can both be movably mounted on the mobile frame; the foldable gangway assembly has a folded state and an extended state;

[0007] When the motorized crew gangway is in a transport state, the foldable gangway assembly is in a folded state, the lifting platform assembly and the foldable gangway assembly are fixed to the mobile frame, and the mobile frame is fixed to the chassis vehicle;

[0008] When the mobile crew ladder is in an erected state, the mobile frame moves the lifting platform assembly and the foldable ladder assembly to the erected position, the lifting platform assembly is supported on the ground, the foldable ladder assembly is in an extended state, one end of the foldable ladder assembly is hinged to the lifting platform assembly, and the other end is supported on the ship.

[0009] Furthermore, the chassis vehicle includes a vehicle-mounted slideway, a support beam, a sprocket, a sprocket seat and a hydraulic support leg;

[0010] The vehicle-mounted slideway is slidably matched with the mobile frame to guide the mobile frame to move;

[0011] The support beam is used to support the vehicle-mounted slideway;

[0012] The sprocket is installed on the support beam through the sprocket seat and is transmission-connected with the mobile frame for transmitting the mobile frame to the erection position;

[0013] The hydraulic legs are located on both sides of the rear of the chassis vehicle and are used to provide support during erection.

[0014] Furthermore, the mobile frame includes a bottom bracket and a front bracket vertically arranged at the front end of the bottom bracket; a hydraulic winch and a first fixing seat are arranged on the top of the front bracket; a pulley, a second fixing seat and a push cylinder are arranged on the bottom bracket;

[0015] The pulley is mounted on the bottom of the bottom bracket and slides along the vehicle-mounted slideway;

[0016] The cable of the hydraulic winch is connected to the foldable gangway ladder assembly and is used to control the lifting angle of the foldable gangway ladder assembly;

[0017] The first fixing seat is used to fix the lifting platform assembly during transportation; the second fixing seat is used to fix the lifting platform assembly during installation;

[0018] The output end of the push oil cylinder is hinged to the foldable gangway ladder assembly and is used to push the lifting platform assembly and the foldable gangway ladder assembly to move to the erection position.

[0019] Furthermore, the lifting platform assembly includes a scissor-type hydraulic lifting platform, a ladder guardrail and a step ladder;

[0020] The scissor-type lifting platform comprises an upper platform and a lower platform arranged in parallel, and a guardrail arranged on one side of the upper platform, which is used to adjust its own lifting height according to the actual height of the ship from the sea level;

[0021] The lower platform is provided with a first platform fixing seat corresponding to the first fixing seat, and the first fixing seat is fixedly connected to the first platform fixing seat during transportation;

[0022] The upper platform is provided with a second platform fixing seat corresponding to the second fixing seat, and the second fixing seat is fixedly connected to the second platform fixing seat during the erection process, so as to stabilize the position of the upper platform during the erection;

[0023] The step ladder is hingedly connected to the upper platform via a first flip support and a first flip mechanism, and the first flip mechanism is used to flip the step ladder so that the other end of the step ladder is supported on the ground;

[0024] The ladder guardrails are arranged on both sides of the step ladder, and one end of the ladder guardrail is hingedly connected to the upper platform;

[0025] One end of the foldable gangway assembly is hingedly connected to the upper platform via a second flip support.

[0026] Furthermore, universal wheels are provided at the bottom of the lower platform and at the other end of the ladder guardrail.

[0027] Furthermore, the ladder guardrail adopts a parallelogram structure and is provided with a gas spring for controlling the compression and extension actions of the ladder guardrail.

[0028] Furthermore, the foldable gangway ladder assembly includes a lower gangway ladder, an upper gangway ladder and a second flipping mechanism;

[0029] One end of the lower gangway is hingedly connected to the upper platform, and the other end is hingedly connected to the upper gangway via the second flipping mechanism;

[0030] When the maneuverable crew gangway is in the transport state, the upper gangway is folded to the upper side of the lower gangway;

[0031] When the motorized crew ladder is in the erected state, the second flipping mechanism drives the upper ladder to rotate and unfold, and forms a straight-line structure with the lower ladder.

[0032] Furthermore, the upper gangway ladder is provided with a spherical support leg and a telescopic springboard at one end away from the lower gangway ladder;

[0033] The upper gangway and the ship are supported by the spherical legs;

[0034] The telescopic gangway is provided at the end of the upper gangway.

[0035] Furthermore, the other ends of the upper gangway ladder and the lower gangway ladder are both provided with rubber tightening blocks, and when the upper gangway ladder is folded to the upper side of the lower gangway ladder, the two rubber tightening blocks are abutted against each other and are used for tightening between the upper gangway ladder and the lower gangway ladder;

[0036] The connecting ends of the upper gangway ladder and the lower gangway ladder are both provided with connecting ear seats, and after the upper gangway ladder and the lower gangway ladder are unfolded, the two connecting ear seats abut against each other, so that the position between the upper gangway ladder and the lower gangway ladder is fixed;

[0037] The connecting ear seat is provided with a cylinder latch for fixing the upper gangway ladder to the lower gangway ladder after the upper gangway ladder is turned 180 degrees;

[0038] The second flipping mechanism is connected to the connecting ear seat to realize flipping of the upper gangway ladder;

[0039] The upper gangway ladder and the lower gangway ladder form a gangway ladder passage, and are both provided with gangway ladder guardrails and gas springs for compressing and retracting the guardrails.

[0040] Furthermore, the lower end gangway is provided with a turning hinge, a turning cylinder, a spring latch, a roller and a cable connecting pin;

[0041] The flip hinge and the flip cylinder are both hingedly connected to the upper platform;

[0042] The spring latch is connected to the push cylinder;

[0043] The upper platform is provided with a turning support connected to the turning cylinder;

[0044] The roller is used to support the foldable gangway assembly when it is folded;

[0045] The cable connecting pin is used to connect the cable of the hydraulic winch.

[0046] Beneficial effects:

[0047] The mobile crew gangway of the present invention has a transport state and an erection state. In the transport state, the mobile frame, the lifting platform assembly and the foldable gangway ladder assembly are all installed on the chassis vehicle, and the erection position can be quickly reached by the chassis vehicle, which is convenient for transportation; in the erection state, the lifting platform assembly and the foldable gangway ladder assembly are moved from the chassis vehicle to the designated erection position by the mobile frame, and the gangway can be quickly erected by the lifting platform assembly and the foldable gangway ladder assembly. During the erection process, no auxiliary lifting equipment is required, and the chassis vehicle and the gangway ladder can be quickly separated after the erection is completed, which reduces the number of auxiliary devices when the gangway ladder is erected, realizes rapid erection and withdrawal, can meet the ship's boarding environment and parameter requirements, and ensure the safety of personnel getting on and off large ships, improve the gangway ladder erection speed, shorten the gangway ladder erection time, and better guarantee the needs of combat troops to quickly get on and off large ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the structure of the motorized crew gangway of the present invention when it is in a transport state;

[0049] Figure 2 for Figure 1 Schematic diagram of the structure of the chassis vehicle of the medium mobile crew gangway;

[0050] Figure 3 for Figure 1 Schematic diagram of the structure of the mobile frame of the middle maneuverable crew ladder;

[0051] Figure 4 for Figure 3 Right side view of the middle mobile rack;

[0052] Figure 5 for Figure 3 A top view of the mobile rack;

[0053] Figure 6 for Figure 1 The front view of the lifting platform assembly of the middle mobile crew ladder;

[0054] Figure 7 for Figure 6 Right view of the middle lifting platform assembly;

[0055] Figure 8 for Figure 1 A schematic diagram of the structure of the foldable gangway assembly of the medium maneuverable crew gangway in the transport state;

[0056] Fig. 9 for Figure 8 A schematic diagram of the structure of the foldable gangway assembly in the unfolded state;

[0057] Figure 10-18 for Figure 1 Flow chart of the use of medium mobile crew ladder on large ships;

[0058] Fig.19 for Figure 1 Flow chart of the use of mobile crew ladder on submarine.

[0059] Among them, 1-chassis vehicle, 2-mobile frame, 3-lifting platform assembly, 4-foldable gangway assembly, 5-retractable outrigger, 6-vehicle slide, 7-support beam, 8-sprocket, 9-hydraulic outrigger, 10-bottom bracket, 11-front bracket, 12-hydraulic winch, 13-first fixed seat, 14-pulley, 15-second fixed seat, 16-thrust cylinder, 17-cable, 18-scissor-type hydraulic lifting platform, 19-ladder guardrail, 20-step ladder, 21-upper platform, 22-lower platform, 23-guardrail, 24 -First platform fixing seat, 25-Second platform fixing seat, 26-First flip support, 27-First flip mechanism, 28-Second flip support, 29-Universal wheel, 30-Gas spring, 31-Lower gangway, 32-Upper gangway, 33-Second flip mechanism, 34-Spherical support leg, 35-Telescopic springboard, 36-Rubber top tightening block, 37-Connecting ear seat, 38-Spring latch, 39-Ladder guardrail, 40-Flip hinge, 41-Flip cylinder, 42-Cable connecting pin, 43-Roller, 44-Ship, 45-Submarine DETAILED DESCRIPTION

[0060] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0061] An embodiment of the present invention provides a motorized crew gangway, which has a transport state and an erection state. Figure 1 This is a schematic diagram of the structure of the maneuverable crew ladder in the transport state. Fig.18 and Fig.19 The figure is a schematic diagram of the structure of the mobile crew gangway when it is in the erection state; in order to facilitate the movement of the mobile crew gangway, when it is necessary to enter the designated erection position or move from one erection position to another erection position, the mobile crew gangway is in the transport state; when the mobile crew gangway is needed to enable personnel to quickly get on and off the large ship 44 or submarine 45, the mobile crew gangway can be erected between the shore and the ship 44 or submarine 45 to form an up and down passage; the mobile crew gangway includes a chassis 1, a mobile frame 2, a lifting platform assembly 3, a foldable gangway assembly 4 and a retractable leg 5; the chassis 1 can be composed of a truck chassis with mobility, an armored vehicle chassis, etc., and the position movement of the mobile crew gangway is achieved through the chassis 1;

[0062] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown in the structure, the mobile frame 2 can be movably mounted on the chassis 1, and a retractable leg 5 is installed at the bottom of the mobile frame 2; the lifting platform assembly 3 and the foldable gangway assembly 4 can be movably mounted on the mobile frame 2; the foldable gangway assembly 4 has a folded state and an extended state; the mobile frame 2 is mainly used to fix the lifting platform assembly 3 and the foldable gangway assembly 4 on the chassis 1 during transportation, and is used to move the lifting platform assembly 3 and the foldable gangway assembly 4 to a specified position during the erection process to complete the erection process;

[0063] like Figure 1 As shown in the structure, when the motorized crew gangway is in the transport state, the foldable gangway assembly 4 is in the folded state, the lifting platform assembly 3 and the foldable gangway assembly 4 are fixed to the mobile frame 2, and the mobile frame 2 is fixed to the chassis 1;

[0064] When the mobile crew ladder is in the erection state, the mobile frame 2 moves the lifting platform assembly 3 and the foldable ladder assembly 4 to the erection position, the lifting platform assembly 3 is supported on the ground, the foldable ladder assembly 4 is in the extended state, one end of the foldable ladder assembly 4 is hinged to the lifting platform assembly 3, and the other end is supported on the ship 44. Fig.17 and Fig.18 As shown in the structure, an up-and-down passage is formed between the ship 44 and the ground through the lifting platform assembly 3 and the foldable gangway assembly 4; Fig.19 As shown in the structure, an up and down passage is formed between the submarine 45 and the ground through the lifting platform assembly 3 and the foldable gangway assembly 4.

[0065] The above-mentioned mobile crew gangway ladder has a transport state and an erection state. In the transport state, the mobile frame 2, the lifting platform assembly 3 and the foldable gangway ladder assembly 4 are all installed on the chassis 1, and the chassis 1 can quickly reach the erection position for easy transportation; in the erection state, the lifting platform assembly 3 and the foldable gangway ladder assembly 4 are moved from the chassis 1 to the designated erection position by the mobile frame 2, and the gangway can be quickly erected by the lifting platform assembly 3 and the foldable gangway ladder assembly 4, and the chassis 1 and the gangway can be quickly separated after the erection is completed. During the erection process, no auxiliary lifting equipment is required, which reduces the number of auxiliary devices and realizes rapid erection and withdrawal. It can meet the boarding environment and parameter requirements of the ship 44, and ensure the safety of the personnel getting on and off the large ship 44, improve the gangway ladder erection speed, shorten the gangway ladder erection time, and better guarantee the needs of combat troops to quickly get on and off large ships 44.

[0066] like Figure 2 As shown in the structure, the chassis 1 includes a vehicle-mounted slide 6, a support beam 7, a sprocket 8, a sprocket 8 seat and a hydraulic support leg 9; the vehicle-mounted slide 6 is slidably matched with the mobile frame 2, and is used to guide the mobile frame 2 to move; the support beam 7 is used to support the vehicle-mounted slide 6; the sprocket 8 is installed on the support beam 7 through the sprocket 8 seat, and is connected to the mobile frame 2 for driving the mobile frame 2 to the erection position; the hydraulic support legs 9 are located on both sides of the rear of the chassis 1, and are used to provide support during erection.

[0067] like Figure 3 , Figure 4 as well as Figure 5 As shown in the structure, the mobile frame 2 includes a bottom bracket 10 and a front bracket 11 vertically arranged at the front end of the bottom bracket 10; a hydraulic winch 12 and a first fixed seat 13 are arranged on the top of the front bracket 11; a pulley 14, a second fixed seat 15 and a push cylinder 16 are arranged on the bottom bracket 10; the pulley 14 is installed at the bottom of the bottom bracket 10 and slides along the vehicle-mounted slide 6; the cable 17 of the hydraulic winch 12 is connected to the foldable gangway assembly 4, which is used to control the lifting angle of the foldable gangway assembly 4; the first fixed seat 13 is used to fix the lifting platform assembly 3 during transportation; the second fixed seat 15 is used to fix the lifting platform assembly 3 during erection; the output end of the push cylinder 16 is hinged to the foldable gangway assembly 4, which is used to push the lifting platform assembly 3 and the foldable gangway assembly 4 to move to the erection position.

[0068] The vehicle-mounted slide 6 can cooperate with the pulley 14 of the mobile frame 2 to facilitate the movement of the mobile frame 2 relative to the chassis vehicle 1, and the pulley 14 is used for sliding between the mobile frame 2 and the vehicle-mounted slide 6; the support beam 7 is used to raise the vehicle-mounted slide 6 to prevent interference; the sprocket 8 can be connected to the pulley 14 at the bottom of the mobile frame 2 to drive the mobile frame 2 to the designated installation position; the cable 17 on the hydraulic winch 12 is connected to the foldable gangway assembly 4, which is mainly used to control the lifting angle of the gangway; the retractable leg 5 is used to play a flipping support role when the mobile frame 2 moves to the designated position.

[0069] like Figure 6 and Figure 7 As shown in the structure, the lifting platform assembly 3 includes a scissor-type hydraulic lifting platform 18, a ladder guardrail 19 and a step ladder 20; the scissor-type lifting platform includes an upper platform 21 and a lower platform 22 arranged in parallel, and a guardrail 23 arranged on one side of the upper platform 21, which is used to adjust its own lifting height according to the actual height of the ship 44 from the sea level; the lower platform 22 is provided with a first platform fixing seat 24 corresponding to the first fixing seat 13, and the first fixing seat 13 is fixedly connected to the first platform fixing seat 24 during transportation; the upper platform 21 is provided with a second platform fixing seat 15 corresponding to the second fixing seat 15 The second fixing seat 15 is fixedly connected with the second platform fixing seat 25 during the erection process, and is used to stabilize the position of the upper platform 21 during the erection; the step ladder 20 is hingedly connected to the upper platform 21 through the first flip support 26 and the first flip mechanism 27, and the first flip mechanism 27 is used to flip the step ladder 20 so that the other end of the step ladder 20 is supported on the ground; ladder guardrails 19 are arranged on both sides of the step ladder 20, and one end of the ladder guardrail 19 is hingedly connected to the upper platform 21; one end of the foldable gangway assembly 4 is hingedly connected to the upper platform 21 through the second flip support 28. Universal wheels 29 are arranged at the bottom of the lower platform 22 and the other end of the ladder guardrail 19. The ladder guardrail 19 adopts a parallelogram structure and is provided with a gas spring 30 for controlling the compression and extension of the ladder guardrail 19.

[0070] like Figure 8 and Fig. 9 As shown in the structure, Figure 8 is a structural schematic diagram of the foldable gangway ladder assembly 4 in a folded and stowed state, Fig. 9Schematic diagram of the structure of the foldable gangway ladder assembly 4 when it is unfolded; the foldable gangway ladder assembly 4 includes a lower gangway ladder 31, an upper gangway ladder 32 and a second flip mechanism 33; one end of the lower gangway ladder 31 is hingedly connected to the upper platform 21, and the other end is hingedly connected to the upper gangway ladder 32 through the second flip mechanism 33; when the maneuvering crew gangway ladder is in the transport state, the upper gangway ladder 32 is folded to the upper side of the lower gangway ladder 31; when the maneuvering crew gangway ladder is in the erection state, the second flip mechanism 33 drives the upper gangway ladder 32 to rotate and unfold, and forms a straight-line structure with the lower gangway ladder 31, such as Fig. 9 The upper gangway 32 is provided with a spherical support leg 34 and a telescopic springboard 35 at one end away from the lower gangway 31; Fig.17 and Fig.18 As shown in the structure, the upper end gangway 32 and the ship 44 are supported by spherical legs 34 to overcome the lateral and longitudinal drift of the ship 44 during use; a telescopic springboard 35 is provided at the end of the upper end gangway 32, and the telescopic springboard 35 is used to facilitate the crew to get on and off the gangway.

[0071] like Figure 8 As shown in the structure, the other ends of the upper gangway 32 and the lower gangway 31 are both provided with rubber jacking blocks 36. When the upper gangway 32 is folded to the upper side of the lower gangway 31, the two rubber jacking blocks 36 are abutted and closed to tighten the upper gangway 32 and the lower gangway 31. The connecting ends of the upper gangway 32 and the lower gangway 31 are both provided with connecting ear seats 37. After the upper gangway 32 and the lower gangway 31 are unfolded, the two connecting ear seats 37 abut against each other to fix the position between the upper gangway 32 and the lower gangway 31. The connecting ear seats 37 are provided with oil cylinder pins for The upper gangway 32 is flipped 180° and fixed to the lower gangway 31; the second flipping mechanism 33 is connected to the connecting ear seat 37 to realize the flipping of the upper gangway 32; the connecting ear seat 37 is provided with a cylinder latch, which is used to fix the two sections of the gangway after the upper gangway 32 is flipped 180°; the second flipping mechanism 33 is connected to the connecting ear seat 37 to realize the flipping of the upper gangway 32 180°; the upper gangway 32 and the lower gangway 31 form a gangway channel, and are both provided with a gangway guardrail 39 and a gas spring 30 for compressing and retracting the guardrail.

[0072] like Figure 8 and Fig. 9As shown in the structure, the lower end gangway 31 is provided with a flip hinge 40, a flip cylinder 41, a spring latch 38, a roller 43 and a cable connecting pin 42; the flip hinge 40 and the flip cylinder 41 are both hingedly connected to the upper platform 21, and the flip cylinder 41 is used to flip the lifting platform assembly 3 90° to the ground; the spring latch 38 is connected to the push cylinder 16; the upper platform 21 is provided with a flip support connected to the flip cylinder 41; the roller 43 is used to support the foldable gangway assembly 4 when it is folded; the cable connecting pin 42 is used to connect the cable 17 of the hydraulic winch 12, so as to control the deployment and lifting angle of the foldable gangway assembly 4 through the hydraulic winch 12.

[0073] The specific installation process of the above-mentioned mobile crew ladder on the large ship 44 is as follows:

[0074] The first step, such as Fig.10 As shown in the structure, the chassis 1 is moved to the shore where the ship 44 is docked, and the hydraulic legs 9 are lowered to allow the chassis 1 to dock stably on the shore;

[0075] The second step is, Fig.11 As shown in the structure, the mobile frame 2 slides relative to the chassis 1, so that the mobile frame 2 moves along the vehicle slideway 6 to the rear of the chassis 1, and the position of the pulley 14 of the mobile frame 2 is fixed. At the same time, the lifting platform assembly 3 and the foldable gangway assembly 4 are moved to the rear of the chassis 1 through the mobile frame 2;

[0076] The third step is Fig.12 As shown in the structure, the retractable legs 5 of the mobile frame 2 are flipped over so that the retractable legs 5 are in full contact with the ground, and the retractable legs 5 are supported on the ground at the shore;

[0077] The fourth step is Fig.13 As shown in the structure, the connection between the mobile frame 2 and the first fixed seat 13 of the lifting platform assembly 3 is released, and the lifting platform assembly 3 and the foldable gangway assembly 4 are pushed to move by the pushing cylinder 16 on the mobile frame 2, and the hydraulic winch 12 is opened at the same time, and the cable 17 is released;

[0078] Step 5: Fig.14 As shown in the structure, by controlling the flip cylinder 41, the lifting platform assembly 3 is rotated 90°, changing from a horizontal state to a vertical state, and the second fixing seat 15 and the second platform fixing seat 25 are connected by a latch, so that the lifting platform assembly 3 is connected to the mobile frame 2;

[0079] Step 6: Fig.15 As shown in the structure, the scissor-type hydraulic lifting platform 18 is controlled to move so that its bottom contacts the ground, so that the lifting platform assembly 3 is supported on the ground;

[0080] Step 7: Fig.16As shown in the structure, the spring latch 38 between the push cylinder 16 and the foldable gangway ladder assembly 4 is released, and the hydraulic winch 12 is controlled to rotate in the opposite direction, so that the foldable gangway ladder assembly 4 is rotated upward by a certain angle, such as: 23°;

[0081] Step 8: Fig.17 As shown in the structure, the upper gangway 32 is controlled to flip 180 degrees by the second flipping mechanism 33, so that the upper gangway 32 and the lower gangway 31 are in a straight line, and the relative position between the upper gangway 32 and the deck of the ship 44 is controlled by retracting and releasing the cable 17, so that a gangway of a suitable angle is formed between the lifting platform assembly 3 and the deck of the ship 44, and the relative position of the gangway is fixed by the cylinder latch;

[0082] Step 9: Fig.18 As shown in the structure, lower the spherical legs 34 of the upper gangway 32, pull out the telescopic springboard 35, place it stably on the deck, and flip over the gangway guardrail 39; loosen the connection between the cable 17 and the gangway, loosen the latch on the lifting platform assembly 3 and the mobile frame 2, retract the telescopic legs 5, and move the mobile frame 2 to the chassis 1, fold up the hydraulic legs 9, and the chassis 1 can be driven away, completing the installation of the mobile crew gangway on the large ship 44.

[0083] like Fig.19 It is a schematic diagram of the structure of the mobile crew ladder installed on the submarine 45. The specific installation process can refer to the above-mentioned installation steps.

[0084] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motorized ship crew ladder, characterized in that: The motorized crew gangway has a transport state and an erection state, and comprises a chassis, a mobile frame, a lifting platform assembly, a foldable gangway assembly and retractable legs; The mobile frame is movably mounted on the chassis vehicle, and a retractable support leg is mounted on the bottom of the mobile frame; The lifting platform assembly and the foldable gangway assembly are both movably mounted on the mobile frame; the foldable gangway assembly has a folded state and an extended state; When the motorized crew gangway is in a transport state, the foldable gangway assembly is in a folded state, the lifting platform assembly and the foldable gangway assembly are fixed to the mobile frame, and the mobile frame is fixed to the chassis vehicle; When the motorized crew gangway is in the erected state, the mobile frame moves the lifting platform assembly and the foldable gangway assembly to the erected position, the lifting platform assembly is supported on the ground, the foldable gangway assembly is in the extended state, one end of the foldable gangway assembly is hinged to the lifting platform assembly, and the other end is supported on the ship; The chassis vehicle comprises a vehicle-mounted slideway, a support beam, a sprocket, a sprocket seat and hydraulic legs; The vehicle-mounted slideway is slidably matched with the mobile frame to guide the mobile frame to move; The support beam is used to support the vehicle-mounted slideway; The sprocket is installed on the support beam through the sprocket seat and is transmission-connected with the mobile frame for transmitting the mobile frame to the erection position; The hydraulic legs are located on both sides of the rear of the chassis vehicle and are used to provide support during erection; The mobile frame includes a bottom bracket and a front bracket vertically arranged at the front end of the bottom bracket; a hydraulic winch and a first fixing seat are arranged on the top of the front bracket; a pulley, a second fixing seat and a push cylinder are arranged on the bottom bracket; The pulley is mounted on the bottom of the bottom bracket and slides along the vehicle-mounted slideway; The cable of the hydraulic winch is connected to the foldable gangway ladder assembly and is used to control the lifting angle of the foldable gangway ladder assembly; The first fixing seat is used to fix the lifting platform assembly during transportation; The second fixing seat is used to fix the lifting platform assembly during the erection process; The output end of the push oil cylinder is hinged to the foldable gangway ladder assembly and is used to push the lifting platform assembly and the foldable gangway ladder assembly to move to the erection position.

2. The motorized crew ladder according to claim 1, characterized in that: The lifting platform assembly includes a scissor-type hydraulic lifting platform, a ladder guardrail and a step ladder; The scissor-type hydraulic lifting platform comprises an upper platform and a lower platform arranged in parallel, and a guardrail arranged on one side of the upper platform, which is used to adjust its own lifting height according to the actual height of the ship from the sea level; The lower platform is provided with a first platform fixing seat corresponding to the first fixing seat, and the first fixing seat is fixedly connected to the first platform fixing seat during transportation; The upper platform is provided with a second platform fixing seat corresponding to the second fixing seat, and the second fixing seat is fixedly connected to the second platform fixing seat during the erection process, so as to stabilize the position of the upper platform during the erection; The step ladder is hingedly connected to the upper platform via a first flip support and a first flip mechanism, and the first flip mechanism is used to flip the step ladder so that the other end of the step ladder is supported on the ground; Ladder guardrails are provided on both sides of the step ladder, and one end of the ladder guardrail is hingedly connected to the upper platform; One end of the foldable gangway assembly is hingedly connected to the upper platform via a second flip support.

3. The motorized crew ladder according to claim 2, characterized in that: Universal wheels are arranged at the bottom of the lower platform and at the other end of the ladder guardrail.

4. The motorized ship crew ladder according to claim 3, characterized in that: The ladder guardrail adopts a parallelogram structure and is provided with a gas spring for controlling the compression and extension actions of the ladder guardrail.

5. The motorized crew ladder according to claim 4, characterized in that: The foldable gangway assembly comprises a lower gangway, an upper gangway and a second turning mechanism; One end of the lower gangway is hingedly connected to the upper platform, and the other end is hingedly connected to the upper gangway via the second flipping mechanism; When the maneuverable crew gangway is in the transport state, the upper gangway is folded to the upper side of the lower gangway; When the motorized crew ladder is in the erected state, the second flipping mechanism drives the upper ladder to rotate and unfold, and forms a straight-line structure with the lower ladder.

6. The motorized crew ladder according to claim 5, characterized in that: The upper gangway ladder is provided with a spherical support leg and a telescopic springboard at one end away from the lower gangway ladder; The upper gangway and the ship are supported by the spherical legs; The telescopic gangway is provided at the end of the upper gangway.

7. The motorized crew ladder according to claim 6, characterized in that: The other ends of the upper gangway ladder and the lower gangway ladder are both provided with rubber tightening blocks, and when the upper gangway ladder is folded to the upper side of the lower gangway ladder, the two rubber tightening blocks are abutted against each other and are used for tightening between the upper gangway ladder and the lower gangway ladder; The connecting ends of the upper gangway ladder and the lower gangway ladder are both provided with connecting ear seats, and after the upper gangway ladder and the lower gangway ladder are unfolded, the two connecting ear seats abut against each other, so that the position between the upper gangway ladder and the lower gangway ladder is fixed; The connecting ear seat is provided with a cylinder latch for fixing the upper gangway ladder to the lower gangway ladder after the upper gangway ladder is turned 180 degrees; The second flipping mechanism is connected to the connecting ear seat to realize flipping of the upper gangway ladder; The upper gangway ladder and the lower gangway ladder form a gangway ladder passage, and are both provided with gangway ladder guardrails and gas springs for compressing and retracting the guardrails.

8. The motorized crew ladder according to claim 7, characterized in that: The lower end gangway is provided with a turning hinge, a turning cylinder, a spring latch, a roller and a cable connecting pin; The flip hinge and the flip cylinder are both hingedly connected to the upper platform; The spring latch is connected to the push cylinder; The upper platform is provided with a turning support connected to the turning cylinder; The roller is used to support the foldable gangway assembly when it is folded; The cable connecting pin is used to connect the cable of the hydraulic winch.

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