Evacuation folding ladder and train

Abstract

The utility model relates to the technical field of rail transit evacuation devices, in particular to an evacuation folding ladder and a train, the folding ladder comprises a main support, a sliding rod, a lifting assembly and a turnover assembly provided with a step structure, the sliding rod is connected to the bottom of the main support in a sliding mode and moves in the horizontal direction so that one end of the sliding rod can stretch out or retract back, and the lifting assembly is connected with the turnover assembly. A first driving device used for driving the sliding rod to move is arranged on the main support, the lifting assembly and the overturning assembly are arranged at one end of the sliding rod and are sequentially arranged from far to near in the direction close to the tail end of the sliding rod, one end of the lifting assembly stretches out or retracts in the vertical direction, and a second driving device used for driving one end of the lifting assembly to move is arranged on the lifting assembly. The middle of the overturning assembly is rotationally connected with the sliding rod, and one end of the overturning assembly is rotationally connected with one end of the lifting assembly so that the overturning assembly can be overturned. The folding ladder can be automatically unfolded and folded through the first driving device and the second driving device.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit evacuation devices, and more specifically, to an evacuation folding ladder and a train. Background Art

[0002] Rail transit, known as "green transportation" for its safety, comfort, large passenger capacity, speed, punctuality, low energy consumption, and low pollution, is gaining increasing popularity and significantly alleviating urban traffic congestion. However, due to its high passenger flow, it faces the following challenges in the event of a fire: smoke spreads rapidly in the event of a fire. Subway interiors are relatively closed, and tunnels are even narrower, so smoke quickly fills stations and inter-tunnel areas. Escape conditions are poor, primarily due to tunnels' deep vertical depths, limited escape routes, and long distances. Escape time is short; tests have shown that passengers are only allowed approximately five minutes to escape in the event of a fire. Evacuation is difficult, as stations and tunnels are cramped with few entrances and exits, yet passenger traffic is high, making both stations and trains extremely crowded during peak hours.

[0003] The prior art Chinese patent CN202210944997.0 discloses a stepped emergency evacuation device and a passenger evacuation method, comprising two parallel main supports, a fixed seat provided at the bottom inner of the main supports, a support plate provided at the bottom of the fixed seat, two main beams provided between the backs of the two support plates, and a traction transition block provided between the two main beams; a telescopic folding assembly is provided on the front of the support plate, and a first-level pedal, a second-level pedal, a third-level pedal and a fourth-level pedal are provided in sequence between the two telescopic folding assemblies; a pedal deployment rod is provided between the support plate and the telescopic folding assembly on the same side. The evacuation device needs to be deployed manually, and the deployment speed is slow, which consumes precious evacuation time. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiency of the prior art evacuation device that cannot be automatically deployed, and to provide an evacuation folding ladder and a train. The evacuation folding ladder can be quickly and automatically deployed in an emergency, thereby buying valuable time for the evacuation of passengers.

[0005] To achieve the above-mentioned purpose, the present technical solution is an evacuation folding ladder, comprising a main support, a sliding rod, a lifting assembly and a flip assembly provided with a step structure, wherein the sliding rod is slidably connected to the bottom of the main support and moves in a horizontal direction to extend or retract one end of the sliding rod, and the main support is provided with a first driving device for driving the sliding rod to move, the lifting assembly and the flip assembly are respectively arranged at one end of the sliding rod and are arranged in sequence from far to near along the direction close to the end of the sliding rod, one end of the lifting assembly is extended or retracted in the vertical direction, and the lifting assembly is provided with a second driving device for driving one end thereof to move, the middle part of the flip assembly is rotatably connected to the sliding rod, and one end of the flip assembly is connected to one end of the lifting assembly to flip the flip assembly.

[0006] In this technical solution, when the folding ladder is deployed, the first drive mechanism drives the sliding rod to extend the lifting assembly and the flip assembly outward. Subsequently, the second drive mechanism drives one end of the lifting assembly upward, at which point the flip assembly connected to one end of the lifting assembly flips about its center, completing the deployment. When the folding ladder is collapsed, the second drive mechanism drives one end of the lifting assembly downward, causing the flip assembly to flip in the opposite direction. Subsequently, the first drive mechanism drives the sliding rod to retract the lifting assembly and the flip assembly inward, completing the collapse. The flip assembly, with its stepped structure, allows for passenger evacuation, achieving both deployment and collapse through a flipping action, resulting in high space utilization.

[0007] As a preferred solution, in order to realize automatic extension or retraction of the sliding rod, a first guide rail is fixed on the main bracket, and at least two sliders adapted to the first guide rail are connected to one side of the sliding rod, and the sliders are slidably connected to the first guide rail. The first driving device is a first telescopic structure, one end of the first telescopic structure is connected to the main bracket, and the telescopic end of the first telescopic structure is connected to one end of the sliding rod.

[0008] As a preferred solution, the lifting assembly includes a sub-bracket, a connecting bracket and a lifting rod, the sub-bracket and the connecting bracket are vertically fixed to one end of the sliding rod in sequence, the sub-bracket is provided with a guide structure, the lifting rod is slidably connected to the guide structure, the second driving device is a second telescopic structure, one end of the second telescopic structure is connected to one end of the connecting bracket, the telescopic end of the second telescopic structure is connected to the top of the lifting rod, the sub-bracket and the connecting bracket support the lifting rod and the second telescopic structure respectively, and the guide structure can limit the movement of the lifting rod to ensure that it moves in the vertical direction.

[0009] As a preferred solution, the top of the lifting rod is an L-shaped structure, and the L-shaped structure is equipped with a first pedal. The first pedal can rise with the lifting rod to reduce the height difference between the side door and the pedal.

[0010] As a preferred solution, the flip assembly includes a flip frame, a first connecting rod, a second pedal and a third pedal. The middle part of the flip frame is rotatably connected to one end of the sliding rod, one end of the first connecting rod is rotatably connected to the lifting rod, and the other end of the first connecting rod is rotatably connected to one end of the flip frame. The second pedal and the third pedal are fixed on the flip frame in sequence. The first pedal, the second pedal and the third pedal form the ladder structure. A rocker mechanism is formed between the first connecting rod, the flip frame and the lifting rod. The second pedal and the third pedal are flipped with the flip frame respectively. When the evacuation folding ladder is folded, the second pedal and the third pedal are tilted to facilitate storage to reduce space occupancy. When the evacuation folding ladder is unfolded, the second pedal and the third pedal are horizontally arranged for passengers to evacuate.

[0011] As a preferred solution, the guide structure includes a plurality of pulleys arranged along the length direction of the sub-bracket, and the pulleys are connected in two rows on both sides of the sub-bracket in sequence. Second guide rails adapted to the pulleys are fixed on both sides of the lifting rod, and the lifting rod is slidably connected between the two rows of pulleys, and the two rows of pulleys limit the two sides of the lifting rod respectively.

[0012] As a preferred solution, a movably deployable fourth pedal is provided at the bottom of the turning frame, and a connecting rod mechanism is provided between the turning frame and the fourth pedal. One end of the connecting rod mechanism is connected to the bottom of the turning frame, and the other end of the connecting rod mechanism is fixed to the fourth pedal. The fourth pedal can be deployed according to the situation. When there is an evacuation platform on one side of the train, the fourth pedal can be retracted to avoid interference with the evacuation platform; when there is no evacuation platform on one side of the train, the fourth pedal can be deployed to reduce the height difference between the third pedal and the ground.

[0013] As a preferred solution, in order to prevent passengers from slipping during evacuation, the first pedal, the second pedal, the third pedal and the fourth pedal have the same structure and have an anti-slip portion on one side respectively.

[0014] As a preferred solution, in order to facilitate the evacuation of passengers, a folding armrest is further included. The folding armrest is installed on the flip assembly and corresponds to the step structure. The armrest can be unfolded synchronously with the flip assembly.

[0015] To achieve the above purpose, a train of the present technical solution includes the above-mentioned evacuation folding ladder and a car body, wherein the main bracket is fixed to the bottom of the car body, and one end of the slide rod extends out of one side of the car body.

[0016] In this technical solution, the evacuation folding ladder corresponds to the position of the train side door. When the evacuation folding ladder is unfolded, it can reduce the height difference between the side door and the ground, preventing passengers from falling during evacuation. The evacuation folding ladder is located at the bottom of the train and does not interfere with the train door. When the evacuation folding ladder is folded, it occupies little space.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The utility model folding ladder for evacuation drives the slide bar and the lifting assembly to move respectively through the first drive device and the second drive device, and the flip assembly flips during the relative movement of the slide bar and the lifting assembly to achieve expansion or folding. The expansion speed is fast, which can buy valuable time for evacuation.

[0019] 2. The utility model reduces the height difference between the side door and the ground through the first pedal, the second pedal, the third pedal and the fourth pedal, wherein the fourth pedal can be selected to be expanded or retracted according to the height of the ground environment, and has strong compatibility.

[0020] 3. The utility model train has an evacuation folding ladder installed at the bottom, which can be quickly deployed for passenger evacuation in an emergency. The evacuation folding ladder does not interfere with the normal operation of the train when folded, and the space utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the utility model folding evacuation ladder in the unfolded state;

[0022] Figure 2 It is a structural diagram of the flip component;

[0023] Figure 3 1. It is a structural diagram of the turning frame;

[0024] Figure 4 yes Figure 1 Schematic diagram of another perspective;

[0025] Figure 5 yes Figure 4 A magnified schematic diagram of part A;

[0026] Figure 6 yes Figure 4 An enlarged schematic diagram of part B;

[0027] Figure 7 This is a schematic diagram of the utility model folding evacuation ladder in a folded state;

[0028] Figure 8 This is a structural diagram of the utility model in the first state of the train;

[0029] Figure 9 It is a structural schematic diagram of the second state of the train of the present invention.

[0030] In the figure: main support 1; first guide rail 11; suspension column 12; slide rod 2; first telescopic structure 21; slider 22; lifting assembly 3; auxiliary support 31; pulley 311; connecting support 32; lifting rod 33; second guide rail 331; second telescopic structure 34; flip assembly 4; flip frame 41; first pedal 42; second pedal 43; third pedal 44; fourth pedal 45; first connecting rod 46; connecting rod mechanism 47; second connecting rod 471; third connecting rod 472; elastic member 473; folding armrest 5; fourth connecting rod 51; vehicle body 6. DETAILED DESCRIPTION

[0031] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0034] Example 1:

[0035] This embodiment provides an evacuation folding ladder, such as Figure 1 、 4As shown in Figure 7, it includes a main bracket 1, a slide bar 2, a lifting assembly 3 and a flip assembly 4 with a stepped structure. The slide bar 2 is slidably connected to the bottom of the main bracket 1 and moves in the horizontal direction to extend or retract one end of the slide bar 2. The main bracket 1 is provided with a first driving device for driving the slide bar 2 to move, the lifting assembly 3 and the flip assembly 4 are respectively arranged at one end of the slide bar 2 and are arranged in sequence from far to near along the direction close to the end of the slide bar 2. One end of the lifting assembly 3 is extended or retracted in the vertical direction. The lifting assembly 3 is provided with a second driving device for driving one end thereof to move. The middle part of the flip assembly 4 is rotatably connected to the slide bar 2, and one end of the flip assembly 4 is connected to one end of the lifting assembly 3 to flip the flip assembly 4.

[0036] In this embodiment, if Figure 1 The figure shows the unfolded state of the folding ladder for evacuation. The first drive device and the second drive device extend one end of the slide bar 2 and the lifting assembly 3 to the right and upward respectively. At the same time, the flip assembly 4 is flipped and unfolded clockwise under the drive of the lifting assembly 3. Figure 7 The figure shows the folded state of the evacuation folding ladder. The first drive device and the second drive device retract the slide bar 2 and one end of the lifting assembly 3 to the left and downward respectively. At the same time, the flip assembly 4 is flipped and folded counterclockwise under the drive of the lifting assembly 3.

[0037] Specifically, such as Figure 5 As shown, a first guide rail 11 is fixed on the main bracket 1, and at least two sliders 22 adapted to the first guide rail 11 are connected to one side of the slide rod 2, and the sliders 22 are slidably connected to the first guide rail 11. The first driving device is a first telescopic structure 21, and one end of the first telescopic structure 21 is connected to the main bracket 1, and the telescopic end of the first telescopic structure 21 is connected to one end of the slide rod 2.

[0038] In this embodiment, the two sliders 22 are respectively fixed to the side of the slide rod 2 away from the extended end. The two sliders 22 can guide the slide rod 2 to move horizontally under the limitation of the first guide rail 11. The first telescopic structure 21 is a telescopic cylinder.

[0039] Specifically, the lifting assembly 3 includes a sub-bracket 31, a connecting bracket 32 ​​and a lifting rod 33. The sub-bracket 31 and the connecting bracket 32 ​​are vertically fixed to one end of the sliding rod 2 in sequence. The sub-bracket 31 is provided with a guide structure, and the lifting rod 33 is slidably connected to the guide structure. The second driving device is a second telescopic structure 34, one end of the second telescopic structure 34 is connected to one end of the connecting bracket 32, and the telescopic end of the second telescopic structure 34 is connected to the top of the lifting rod 33.

[0040] In this embodiment, if Figure 1As shown, the second telescopic structure 34 is a telescopic cylinder, one end of the second telescopic structure 34 is rotatably connected to the bottom of the connecting bracket 32 ​​, and the telescopic end of the second telescopic structure 34 is rotatably connected to the top of the lifting rod 33 .

[0041] Specifically, the top of the lifting rod 33 is an L-shaped structure, and the L-shaped structure is installed with a first pedal 42.

[0042] In this embodiment, the first pedal 42 can reduce the height difference between the side doors of the train after rising with the lifting rod 33.

[0043] Specifically, the flip assembly 4 includes a flip frame 41, a first connecting rod 46, a second pedal 43 and a third pedal 44. The middle part of the flip frame 41 is rotatably connected to one end of the slide rod 2, one end of the first connecting rod 46 is rotatably connected to the lifting rod 33, and the other end of the first connecting rod 46 is rotatably connected to one end of the flip frame 41. The second pedal 43 and the third pedal 44 are fixed on the flip frame 41 in sequence, and the first pedal 42, the second pedal 43 and the third pedal 44 form the stepped structure.

[0044] In this embodiment, if Figure 2 、 3 As shown, the flip frame 41 is composed of a triangular structure and a connecting arm extending outward from the middle of the triangular structure. The second pedal 43 and the third pedal 44 are respectively fixed to the middle and bottom of the triangular structure by fasteners.

[0045] Specifically, such as Figure 6 As shown, the guide structure includes a plurality of pulleys 311 arranged along the length direction of the sub-bracket 31, and the pulleys 311 are connected in two rows on both sides of the sub-bracket 31 in sequence. Second guide rails 331 adapted to the pulleys 311 are fixed on both sides of the lifting rod 33, and the lifting rod 33 is slidably connected between the two rows of pulleys 311.

[0046] In this embodiment, a V-shaped guide groove is provided in the middle of the pulley 311, and the second guide rail 331 is provided with a protrusion adapted to the V-shaped guide groove, which not only increases the contact area between the pulley 311 and the second guide rail 331 but also further limits the lifting rod 33 to prevent the lifting rod 33 from shaking.

[0047] Specifically, such as Figure 1 、 2 As shown, a movably deployable fourth pedal 45 is provided at the bottom of the flip frame 41, and a connecting rod mechanism 47 is provided between the flip frame 41 and the fourth pedal 45, one end of the connecting rod mechanism 47 is connected to the bottom of the flip frame 41, and the other end of the connecting rod mechanism 47 is fixed to the fourth pedal 45.

[0048] In this embodiment, the fourth pedal 45 can be unfolded according to the height of the ground, wherein the connecting rod mechanism 47 includes a second connecting rod 471, a third connecting rod 472 and an elastic member 473, one end of the second connecting rod 471 and the third connecting rod 472 are respectively rotatably connected to the bottom of the flip frame 41, and the other end of the second connecting rod 471 and the third connecting rod 472 are connected to the fourth pedal 45. A four-link connection is formed between the flip frame 41, the second connecting rod 471, the third connecting rod 472 and the fourth pedal 45, and an elastic member 473 is also connected between the flip frame 41 and the fourth pedal 45. The elastic member 473 can be in a compressed state and can provide tension between the flip frame 41 and the fourth pedal 45. When the four-link connection rotates past a self-locking point, it will remain in this position. The self-locking point corresponds to the two states of folding and unfolding.

[0049] Specifically, the first pedal 42 , the second pedal 43 , the third pedal 44 and the fourth pedal 45 have the same structure and have an anti-slip portion on one side respectively.

[0050] In this embodiment, the anti-slip portions are anti-slip protrusions on the surfaces of the first pedal 42 , the second pedal 43 , the third pedal 44 and the fourth pedal 45 .

[0051] Example 2:

[0052] This embodiment is similar to embodiment 1, except that, in this embodiment, Figure 1 、 2 As shown, a folding armrest 5 is also included. The folding armrest 5 is installed on the flip assembly 4 and corresponds to the step structure.

[0053] In this embodiment, the folding armrest 5 is composed of multiple connecting rods, which form a parallel connecting rod mechanism with the flip frame 41. A fourth connecting rod 51 is also provided at one end of the folding armrest 5. One end of the fourth connecting rod 51 is connected to one end of the folding armrest 5, and the other end of the fourth connecting rod 51 is connected to one end of the sliding rod 2, and can be unfolded or folded synchronously with the flip assembly 4.

[0054] Example 3:

[0055] This embodiment provides a train, including the above-mentioned folding evacuation ladder, and also includes a car body 6, the main bracket 1 is fixed to the bottom of the car body 6, and one end of the slide bar 2 extends out of one side of the car body 6, as shown in FIG. Figure 8 、 9 As shown, the train has two states, state one corresponds to the unfolded state of the evacuation folding ladder, and state two corresponds to the folded state of the evacuation folding ladder.

[0056] In this embodiment, the folding evacuation ladder corresponds to the position of the side door of the vehicle body 6 , and a hanging column 12 is provided on the top of the main bracket 1 , and one end of the hanging column 12 is fixed to the bottom of the vehicle body 6 .

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An evacuation folding ladder, characterized in that: The utility model comprises a main support (1), a slide bar (2), a lifting assembly (3) and a flip assembly (4) provided with a stepped structure, wherein the slide bar (2) is slidably connected to the bottom of the main support (1) and moves in a horizontal direction so that one end of the slide bar (2) extends or retracts, and the main support (1) is provided with a first driving device for driving the slide bar (2) to move, the lifting assembly (3) and the flip assembly (4) are respectively arranged at one end of the slide bar (2) and are sequentially arranged from far to near in a direction close to the end of the slide bar (2), one end of the lifting assembly (3) extends or retracts in a vertical direction, and the lifting assembly (3) is provided with a second driving device for driving one end thereof to move, the middle part of the flip assembly (4) is rotatably connected to the slide bar (2), and one end of the flip assembly (4) is rotatably connected to one end of the lifting assembly (3) so that the flip assembly (4) flips.

2. The folding ladder for evacuation according to claim 1, characterized in that: A first guide rail (11) is fixed on the main bracket (1), and at least two sliders (22) adapted to the first guide rail (11) are connected to one side of the slide bar (2), and the sliders (22) are slidably connected to the first guide rail (11). The first driving device is a first telescopic structure (21), one end of the first telescopic structure (21) is connected to the main bracket (1), and the telescopic end of the first telescopic structure (21) is connected to one end of the slide bar (2).

3. The folding ladder for evacuation according to claim 1, characterized in that: The lifting assembly (3) includes a sub-bracket (31), a connecting bracket (32) and a lifting rod (33), wherein the sub-bracket (31) and the connecting bracket (32) are vertically fixed to one end of the sliding rod (2) in sequence, and a guide structure is provided on the sub-bracket (31), and the lifting rod (33) is slidably connected to the guide structure. The second driving device is a second telescopic structure (34), one end of the second telescopic structure (34) is connected to one end of the connecting bracket (32), and the telescopic end of the second telescopic structure (34) is connected to the top of the lifting rod (33).

4. The folding ladder for evacuation according to claim 3, characterized in that: The top of the lifting rod (33) is an L-shaped structure, and a first pedal (42) is installed on the L-shaped structure.

5. The folding ladder for evacuation according to claim 4, characterized in that: The flip assembly (4) includes a flip frame (41), a first connecting rod (46), a second pedal (43) and a third pedal (44); the middle portion of the flip frame (41) is rotatably connected to one end of the slide rod (2); one end of the first connecting rod (46) is rotatably connected to the lifting rod (33); the other end of the first connecting rod (46) is rotatably connected to one end of the flip frame (41); the second pedal (43) and the third pedal (44) are fixed to the flip frame (41) in sequence; the second pedal (43) and the third pedal (44) form the step structure.

6. The folding ladder for evacuation according to claim 3, characterized in that: The guide structure comprises a plurality of pulleys (311) arranged along the length direction of the auxiliary bracket (31), wherein the plurality of pulleys (311) are sequentially connected to both sides of the auxiliary bracket (31) in two rows, and second guide rails (331) adapted to the pulleys (311) are fixed on both sides of the lifting rod (33), and the lifting rod (33) is slidably connected between the two rows of pulleys (311).

7. The folding ladder for evacuation according to claim 5, characterized in that: A fourth pedal (45) that can be movably deployed is provided at the bottom of the flip frame (41), and a connecting rod mechanism (47) is provided between the flip frame (41) and the fourth pedal (45). One end of the connecting rod mechanism (47) is connected to the bottom of the flip frame (41), and the other end of the connecting rod mechanism (47) is fixed to the fourth pedal (45).

8. The folding ladder for evacuation according to claim 7, characterized in that: The first pedal (42), the second pedal (43), the third pedal (44) and the fourth pedal (45) have the same structure and each has an anti-slip portion on one side.

9. The folding ladder for evacuation according to claim 1, characterized in that: It also includes a folding armrest (5), which is installed on the flip assembly (4) and corresponds to the step structure.

10. A train, characterized in that: An evacuation folding ladder comprising any one of claims 1 to 9, further comprising a vehicle body (6), wherein the main support (1) is fixed to the bottom of the vehicle body (6), and one end of the slide rod (2) extends out of one side of the vehicle body (6).

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