Ship lift caisson escape ladder driven by screw lifting mechanism

Abstract

Disclosed in the present application is a ship lift caisson escape ladder driven by a screw lifting mechanism. The escape ladder comprises: a support sliding frame arranged on a caisson deck; a top pedal slidably arranged on the support sliding frame; a lifting mechanism arranged on the caisson deck and used for providing power for the raising and lowering of the top pedal; and an inclined ladder arranged on the caisson deck, one end of the inclined ladder being slidably connected to the caisson deck, and the other end of the inclined ladder being hinged to the top pedal.

Description

A ship lift cabin escape ladder driven by a spiral lifting mechanism Technical Field

[0001] The present invention relates to the technical field of ship lifts, and more particularly to an escape ladder for a ship lift cabin driven by a spiral lifting mechanism. Background Art

[0002] When the ship lift's carriage stops at different elevations, the deck of the carriage and the ground level of the escape door on the tower column are generally not aligned exactly. Therefore, a liftable escape ladder is required to connect the deck and the escape door for daily passage and emergency evacuation of personnel.

[0003] Existing shipboard escape ladders typically feature a top tread that moves up and down along guide mechanisms attached to two support columns. The inclined stair steps below are mounted via their own pivots within an inclined rectangular frame. One end of the frame is connected to the top tread, while the other end is fitted with rollers that slide within a groove on the ground. The stair steps are connected to the top tread via a linkage mechanism, ensuring that the stair steps remain level as the top tread drives one end of the rectangular frame up and down.

[0004] The top step of an escape ladder often uses a chain drive to raise and lower the ladder. The top step is equipped with a suspension shaft, with a chain mounted on its end. The chain passes upwards around a fixed pulley sprocket at the top of the support column, then downwards around a sprocket on the drive shaft before reconnecting to the suspension shaft. A motor, via a reduction mechanism, drives the sprocket on the drive shaft, which in turn drives the top step up and down, thereby raising and lowering the ladder. The suspension shaft for the top step is typically mounted directly within guide grooves in the two support columns. The clearance between the suspension shaft and the guide groove is designed to be small, providing guidance for the ladder's ascent and descent. However, over extended operation, wear and tear can create significant clearance between the suspension shaft and the guide groove, causing noticeable wobbling when people ascend and descend the top step. Furthermore, poor guidance on both sides can cause jitter and unusual noise during the ladder's ascent and descent. In severe cases, the drive shaft or chain can break, leading to accidents. While a worn suspension shaft can generally be replaced, the guide groove, machined into the support column itself, is often difficult to replace directly, making this issue difficult to fully address.

[0005] In addition, to prevent the top step from interfering with the tower wall, and considering that the ship-carrying compartment itself may move laterally to a certain extent, a certain gap is usually left between the top step and the tower wall. However, the existence of this gap brings the risk of people stepping on empty space when passing through.

[0006] Summary of the Invention

[0007] The object of the present invention is to provide a ship lift cabin escape ladder driven by a spiral lifting mechanism, in order to solve the technical problems in the background technology.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A ship lift cabin escape ladder driven by a spiral lifting mechanism, comprising

[0010] A supporting slide, the supporting slide being arranged on the deck of the ship-bearing box;

[0011] A top pedal, wherein the top pedal is slidably arranged on the supporting slide;

[0012] A lifting mechanism, which is arranged on the deck of the ship carrier and is used to provide power for raising and lowering the top pedal;

[0013] An inclined ladder is provided on the ship-carrying box deck, one end of the inclined ladder is slidably connected to the ship-carrying box deck, and the other end of the inclined ladder is hinged to the top pedal.

[0014] In some embodiments, the support carriage comprises:

[0015] Support columns, two of which are arranged on the side of the deck of the ship compartment close to the tower escape door;

[0016] A connecting frame is provided at the top and is used to connect the tops of the two support columns;

[0017] A lifting mechanism mounting platform is provided at the bottom and is used to connect the bottoms of the two support columns;

[0018] Slide rails, wherein the two slide rails are respectively arranged on the inner sides of the support column opposite to each other;

[0019] Slide blocks, wherein the two slide blocks are fixedly connected to the two sides of the top pedal respectively, and the two slide blocks are slidably connected to the two slide rails respectively.

[0020] In some embodiments, the support slide further includes a slider mounting plate, and the slider is fixedly connected to the top pedal via the slider mounting plate.

[0021] In some embodiments, the support slide further includes a fall arrester, two of the fall arresters are respectively arranged at the top position of the inner side of the support column, and the ropes of the fall arresters are connected to the slider mounting plate.

[0022] In some embodiments, it also includes a slide groove, an electric push rod and a telescopic pedal, the two slide grooves are respectively installed on both sides of the top pedal, and the telescopic pedal is installed in the slide groove; one end of the two electric push rods is connected to the side of the top pedal, and the other end is connected to the telescopic pedal.

[0023] In some embodiments, the lifting mechanism is a spiral lifting mechanism, which is disposed on a lifting mechanism mounting platform, and the top of a lifting column of the spiral lifting mechanism is connected to the bottom of the top pedal.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The spiral lifting mechanism driven ship elevator cabin escape ladder of the present application has a novel structure and uses a mature and safe spiral lifting mechanism to drive the escape ladder to rise and fall. Compared with the structure using chain drive, it is simpler and more convenient to maintain and repair. The use of a slide rail and a slider mechanism with better guidance and durability to guide the lifting and lowering of the top pedal avoids the wear problem that is prone to occur in the hanging shaft and guide groove used in the chain drive, so that the top pedal can be raised and lowered smoothly for a long time, and the top pedal is not prone to obvious shaking when people go up and down. The telescopic pedal driven by the electric push rod can block the gap after the top pedal is aligned with the escape door to prevent people from stepping on air. For escape ladders with only one spiral lifting mechanism, the use of two fall arresters connected to the top pedal can improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic diagram of one viewing angle of this embodiment.

[0027] FIG2 is a schematic diagram of another viewing angle of this embodiment.

[0028] FIG3 is a schematic diagram of the top step lowering of this embodiment.

[0029] FIG4 is an enlarged schematic diagram of I in FIG1 ;

[0030] FIG5 is an enlarged schematic diagram of I in FIG1 (the telescopic pedal 10 is extended);

[0031] FIG6 is an enlarged schematic diagram of II in FIG2 ; DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] 1 to 6 , a spiral lifting mechanism driven ship lift cabin escape ladder according to an embodiment of the present application will be described in detail. It should be noted that the following embodiments are only used to explain the present application and do not constitute a limitation of the present application.

[0034] Embodiment 1:

[0035] As shown in Figure 1, a ship lift compartment escape ladder driven by a spiral lifting mechanism includes a supporting slide 22, a top pedal 4, a lifting mechanism 7, and an inclined ladder 12. The supporting slide 22 is arranged on the compartment deck 1; the top pedal 4 is slidingly arranged on the supporting slide 22; the lifting mechanism 7 is arranged on the compartment deck 1, and is used to provide power for the lifting and lowering of the top pedal 4; the inclined ladder 12 is arranged on the compartment deck 1, one end of the inclined ladder 12 is slidably connected to the compartment deck 1, and the other end of the inclined ladder 12 is hinged to the top pedal 4.

[0036] In some embodiments, the support slide 22 includes: a support column 2, a connecting frame 2a, a lifting mechanism 7 mounting platform 2b, a slide rail 3, a slider 6, and a slider mounting plate 5. The two support columns 2 are arranged on the side of the ship compartment deck 1 close to the tower column escape door; the connecting frame 2a is arranged at the top, used to connect the tops of the two support columns 2; the lifting mechanism 7 mounting platform 2b is arranged at the bottom, used to connect the bottoms of the two support columns 2; the two slide rails 3 are respectively arranged on the inner sides of the support columns 2 opposite to each other; the two sliders 6 are respectively fixedly connected to the two sides of the top pedal 4, and the two sliders 6 are respectively slidably connected to the two slide rails 3. The slider 6 is fixedly connected to the top pedal 4 through the slider mounting plate 5.

[0037] The specific installation method is as follows:

[0038] As shown in Figures 1 to 6, two support columns 2 are provided on the deck 1 of the ship compartment near the tower escape door. The tops of the two support columns 2 are connected by a connecting frame 2a with handrails, and a mounting platform 2b for a lifting mechanism 7 is provided below. A slide rail 3 is vertically installed on the inner side of each of the two support columns 2.

[0039] The top step 4 is located between the two support columns 2. A slider mounting plate 5 is mounted on each side of the top step 4. Two sliders 6 are mounted on each slider mounting plate 5. The sliders 6 are mounted on two slide rails 3. The frame 12a and step connecting rod 12c on both sides of the inclined ladder 12 are hingedly connected to the two slider mounting plates 5.

[0040] A lifting mechanism 7 is provided on the lifting mechanism 7 mounting platform 2 b , wherein the lifting mechanism 7 is a spiral lifting mechanism 7 , which is provided on the lifting mechanism 7 mounting platform 2 b , and the top of the lifting column 7 a of the spiral lifting mechanism 7 is connected to the bottom of the top pedal 4 .

[0041] It should be noted that the spiral lifting mechanism 7 can be implemented by using the Spiral Lifting Mechanism produced by Wuhu Haogejin Automation Technology Co., Ltd.

[0042] A fall arrester 9 is hung at the top position of the inner side of each of the two support columns 2 , and a steel wire rope 9 a below the fall arrester 9 is connected to the slider mounting plate 5 .

[0043] A chute 4a is respectively provided on both sides of the top pedal 4, and a telescopic pedal 10 is installed in the chute 4a. Two electric push rods 11 are connected to the side of the top pedal 4 at one end and to the telescopic pedal 10 at the other end.

[0044] When the ship lift cabin stops at a certain elevation, the driving mechanism 8 drives the lifting column 7a of the spiral lifting mechanism 7 to extend or retract, so that the top platform 4 is aligned with the ground of the escape door at a suitable position on the tower column. Then, the two electric push rods 11 are driven to extend the telescopic pedal 10 (as shown in Figure 5), covering the gap between the top platform 4 and the tower column wall, and then people can pass through the escape ladder.

[0045] When the ship lift issues a command to move up or down, the command triggers the control device to drive the two electric push rods 11 to retract the telescopic pedal 10 (the state shown in Figures 4 and 6), thereby avoiding interference between the telescopic pedal 10 and the wall.

[0046] When the spiral lifting mechanism 7 suddenly falls due to a serious failure, the two fall arresters 9 can ensure that the top pedal 4 and the inclined ladder 12 will not fall sharply.

[0047] Similar to conventional shiplift escape ladders, when the top step 4 is at different heights, the inclined ladder 12, via the step connecting rod 12b, ensures that each step 12c of the inclined ladder 12 remains level. A pulley is provided at the end of the inclined ladder 12 connected to the carrier deck 1. The slide rail 3 provided on the carrier deck 1 cooperates with the pulley at the rear of the inclined ladder 12, facilitating the sliding of the inclined ladder 12 on the carrier deck 1 and reducing friction.

[0048] In the technical solution of this application, a ship elevator powered by a spiral lift mechanism 7 supports the cabin escape ladder. The spiral lift mechanism 7 is mounted below the top step 4, with its lifting column 7a connected to the bottom of the top step 4. A slider mounting plate 5 is mounted on each side of the top step 4. Sliders 6 are mounted on these slider mounting plates 5, and these sliders 6 are mounted on rails 3 on the inner sides of the two support columns 2. When the spiral lift mechanism 7 is raised or lowered, it drives the top step 4 up and down along the rails 3, thereby achieving smooth lifting and lowering of the entire escape ladder.

[0049] Another innovation of this application is that a chute 4a is provided on each side of the top step 4, with a telescopic step 10 mounted within each chute 4a. Two electric push rods 11 are connected to the sides of the top step 4 at one end and to the telescopic step 10 at the other end. When the ship lift is parked and the top step 4 is aligned with the tower escape door, the electric push rods 11 push the sliding step 10 out, closing the gap between the top step 4 and the escape door. When the ship lift is commanded to move up or down, the electric push rods 11 retract the telescopic step 10 to prevent interference between the telescopic step 10 and the wall.

[0050] At the same time, a fall arrester 9 is hung on the inner side of the top of each of the two support columns 2. The wire rope 9a below the fall arrester 9 is connected to the slider mounting plate 5, which can prevent the top pedal 4 and the inclined ladder 12 from falling sharply when the lifting mechanism 7 suddenly falls due to a serious failure.

Claims

1. A ship lift cabin escape ladder driven by a spiral lifting mechanism, characterized in that: include A supporting slide, wherein the supporting slide is arranged on the deck of the ship carrier; A top pedal, wherein the top pedal is slidably disposed on a supporting slide; A lifting mechanism, which is arranged on the deck of the ship carrier and is used to provide power for lifting and lowering the top pedal; An inclined ladder is arranged on the ship-carrying box deck, one end of the inclined ladder is slidably connected to the ship-carrying box deck, and the other end of the inclined ladder is hinged to the top pedal.

2. The spiral lifting mechanism driven ship lift cabin escape ladder according to claim 1, characterized in that: The support carriage comprises: Support columns, two of which are arranged on the side of the deck of the ship-bearing compartment close to the tower escape door; A connecting frame, which is arranged at the top and is used to connect the tops of the two supporting columns; A lifting mechanism mounting platform, which is arranged at the bottom and is used to connect the bottoms of the two support columns; Slide rails, wherein two slide rails are arranged opposite to each other on the inner sides of the support column; The two sliders are respectively fixedly connected to the two sides of the top pedal, and the two sliders are respectively slidably connected to the two slide rails.

3. The spiral lifting mechanism driven ship lift cabin escape ladder according to claim 2, characterized in that: The support slide also includes a slider mounting plate, and the slider is fixedly connected to the top pedal via the slider mounting plate.

4. The spiral lifting mechanism driven ship lift cabin escape ladder according to claim 3, characterized in that: The supporting slide also includes a fall arrester, two of which are respectively arranged at the top positions of the inner side of the supporting column, and the ropes of the fall arrester are connected to the slider mounting plate.

5. The spiral lifting mechanism driven ship lift cabin escape ladder according to claim 3, characterized in that: It also includes a slide groove, an electric push rod and a telescopic pedal. The two slide grooves are respectively installed on both sides of the top pedal, and the telescopic pedal is installed in the slide groove; one end of the two electric push rods is connected to the side of the top pedal, and the other end is connected to the telescopic pedal.

6. The spiral lifting mechanism driven ship lift cabin escape ladder according to claim 1, characterized in that: The lifting mechanism is a spiral lifting mechanism, which is arranged on a lifting mechanism mounting platform, and the top of a lifting column of the spiral lifting mechanism is connected to the bottom of a top pedal.

Images