阅读说明：本技术 逃生梯、轨道车辆、轨道交通系统 (Escape ladder, rail vehicle and rail transit system ) 是由 关则俊 罗俊富 宁尚景 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种逃生梯、轨道车辆和轨道交通系统,逃生梯包括梯架机构和扶手机构；梯架机构包括踏板和两个间隔设置的伸缩部,踏板设于两个间隔设置的伸缩部之间,伸缩部包括可伸缩连接的第一梯段和第二梯段；至少一个伸缩部对应设有扶手单元；扶手单元包括软扶手部和扶手支撑组件；扶手支撑组件包括第一扶手支撑部和第二扶手支撑部；第一扶手支撑部包括第一扶手支撑件,第一扶手支撑件的一端位置固定,另一端可转动；第二扶手支撑部包括第二扶手支撑件,第二扶手支撑件的一端连接在第一梯段上,另一端可转动；第一扶手部的一端连接在第一扶手支撑件的另一端上,第一扶手部的另一端连接在第二扶手支撑件的另一端上。本发明逃生梯占用空间小。(The invention discloses an escape ladder, a rail vehicle and a rail transit system, wherein the escape ladder comprises a ladder frame mechanism and a handrail mechanism; the ladder frame mechanism comprises a pedal and two telescopic parts arranged at intervals, the pedal is arranged between the two telescopic parts arranged at intervals, and the telescopic parts comprise a first ladder section and a second ladder section which are in telescopic connection; at least one telescopic part is correspondingly provided with a handrail unit; the armrest unit comprises a soft armrest part and an armrest supporting component; the armrest support assembly comprises a first armrest support part and a second armrest support part; the first handrail supporting part comprises a first handrail supporting part, one end of the first handrail supporting part is fixed, and the other end of the first handrail supporting part can rotate; the second handrail supporting part comprises a second handrail supporting part, one end of the second handrail supporting part is connected to the first ladder section, and the other end of the second handrail supporting part can rotate; one end of the first armrest portion is connected to the other end of the first armrest support member, and the other end of the first armrest portion is connected to the other end of the second armrest support member. The escape ladder has small occupied space.)

1. An escape ladder is characterized by comprising a ladder frame mechanism and a handrail mechanism;

the ladder frame mechanism comprises a pedal and two telescopic parts arranged at intervals, the pedal is arranged between the two telescopic parts arranged at intervals, each telescopic part comprises a first ladder section and a second ladder section, and the second ladder section is in telescopic connection with the first ladder section;

the handrail mechanism comprises a handrail unit, and at least one telescopic part is correspondingly provided with the handrail unit; the armrest unit comprises a soft armrest part and an armrest supporting component; the armrest support assembly comprises a first armrest support and a second armrest support; the first handrail supporting part comprises a first handrail supporting part, one end of the first handrail supporting part is fixed, and the other end of the first handrail supporting part can rotate relative to the fixed end; the second handrail supporting part comprises a second handrail supporting part, one end of the second handrail supporting part is pivotally connected to the first ladder section, and the other end of the second handrail supporting part can rotate; the soft armrest part comprises a first armrest part, one end of the first armrest part is connected to the other end of the first armrest supporting part, and the other end of the first armrest part is connected to the other end of the second armrest supporting part;

when the escape ladder is in a working state, the second ladder section extends out of the first ladder section, and the first handrail part is tensioned and positioned above the telescopic part.

2. The escape ladder of claim 1, wherein said first handrail support further comprises a first handrail mount, said first handrail mount being fixed relative to said one end of said first handrail support;

the soft armrest part also comprises a second armrest part, one end of the second armrest part is connected to the other end of the first armrest supporting part, and the other end of the second armrest part is connected to the first armrest mounting seat; when the escape ladder is in a working state, the second handrail part is tensioned.

3. The escape ladder of claim 1 wherein said second handrail support further comprises a second handrail mount, said second handrail mount being provided on said first ladder section;

the soft armrest part also comprises a third armrest part, one end of the third armrest part is connected to the other end of the second armrest supporting part, and the other end of the third armrest part is connected to the second armrest mounting seat; when the escape ladder is in a working state, the third handrail part is tensioned.

4. The escape ladder of claim 1, wherein said first handrail support further comprises a first receiving portion for receiving said first handrail support; when the escape ladder is in a contracted state, the first handrail supporting piece rotates to the first accommodating part.

5. The escape ladder of claim 1, wherein said second handrail support further comprises a second receiving portion for receiving said second handrail support; when the escape ladder is in a contracted state, the second handrail supporting piece rotates to the second accommodating part.

6. The escape ladder of claim 4, wherein the first handle support is a square tube, the first receiving portion is U-shaped, and when the first handle support is rotated to the first receiving portion, the first handle support is received in the U-shaped first receiving portion.

7. The escape ladder of claim 4 or 5 wherein said handrail unit further comprises a storage positioning means.

8. The escape ladder of claim 7, wherein said storage positioning means includes an elastic positioning member and a first positioning hole for positioning in cooperation with said elastic positioning member.

9. The escape ladder of claim 1 wherein said ladder assembly further includes a ladder mounting portion, said ladder mounting portion including two spaced ladder mounting members, one of said ladder mounting members being attached to each end of said first ladder section remote from said second ladder section.

10. The escape ladder of claim 9 wherein each of said ladder mount members has a hinge hole, wherein the hinge hole of one of said ladder mount members is a circular hole and the hinge hole of the other of said ladder mount members is a kidney-shaped hole.

11. The escape ladder of claim 1, wherein a telescopic positioning means is further provided on said telescopic portion.

12. The ladder of claim 11, wherein the retractable positioning means comprises a pull cord and a retractable positioning member;

one end of the pull rope is connected to the second handrail supporting piece, and the other end of the pull rope is connected to the telescopic positioning piece;

the side wall of the first ladder section is provided with a second positioning hole, the telescopic positioning piece is telescopically arranged in the second positioning hole, and when the escape ladder is in a working state, the pull rope is tensioned and pulls the telescopic positioning piece to stretch out relative to the first ladder section, so that the second ladder section is stretched out from the first ladder section.

13. The escape ladder of claim 1 wherein each of said telescoping sections is provided with a corresponding one of said handrail units.

14. A rail vehicle comprising an escape ladder according to any of claims 1-13.

15. A rail transit system, comprising:

the escape system comprises a rail, wherein an escape channel is arranged on the rail;

a rail vehicle straddling the track, the rail vehicle having an escape door;

an escape ladder according to any one of claims 1-13, the escape ladder being arranged adjacent to the exit door, the second ladder section extending from within the first ladder section when the escape ladder is in an operative state, the second ladder section being erected on the escape way.

Technical Field

The invention belongs to the field of rail transit systems, and particularly relates to an escape ladder, a rail vehicle with the escape ladder and a rail transit system.

Background

In the prior art, when emergency parking occurs in a running process of a rail vehicle, because the rail vehicle has a certain distance from a rail beam, after an escape door is opened, the escape ladder needs to be placed at the escape door so that passengers can escape from the interior of the vehicle to the rail beam through the escape ladder. The conventional escape ladder is large in size and complex in structure, and often occupies a relatively large space in a railway vehicle when placed in the railway vehicle.

Disclosure of Invention

The invention aims to provide an escape ladder, a rail vehicle and a rail transit system, wherein the escape ladder is simple in structure and can be switched to a state with smaller volume, so that when the escape ladder is placed in the rail vehicle, the occupied space of the escape ladder can be greatly reduced.

In order to achieve the above object, the present invention provides an escape ladder, which includes a ladder frame mechanism and a handrail mechanism;

the ladder frame mechanism comprises a pedal and two telescopic parts arranged at intervals, the pedal is arranged between the two telescopic parts arranged at intervals, each telescopic part comprises a first ladder section and a second ladder section, and the second ladder section is in telescopic connection with the first ladder section;

the handrail mechanism comprises a handrail unit, and at least one telescopic part is correspondingly provided with the handrail unit; the armrest unit comprises a soft armrest part and an armrest supporting component; the armrest support assembly comprises a first armrest support and a second armrest support; the first handrail supporting part comprises a first handrail supporting part, one end of the first handrail supporting part is fixed, and the other end of the first handrail supporting part can rotate relative to the fixed end; the second handrail supporting part comprises a second handrail supporting part, one end of the second handrail supporting part is pivotally connected to the first ladder section, and the other end of the second handrail supporting part can rotate; the soft armrest part comprises a first armrest part, one end of the first armrest part is connected to the other end of the first armrest supporting part, and the other end of the first armrest part is connected to the other end of the second armrest supporting part;

when the escape ladder is in a working state, the second ladder section extends out of the first ladder section, and the first handrail part is tensioned and positioned above the telescopic part.

The invention also provides a rail vehicle comprising an escape ladder according to any of the above examples.

The present invention additionally provides a rail transit system comprising:

the escape system comprises a rail, wherein an escape channel is arranged on the rail;

a rail vehicle straddling the track, the rail vehicle having an escape door;

the escape ladder is according to any one of the above examples, is close to the emergency exit and is arranged, and when the escape ladder is in a working state, the second ladder section extends out of the first ladder section, and the second ladder section is erected on the escape passage.

According to the escape ladder provided by the invention, as the handrail part of the handrail mechanism is the soft handrail part, when the escape ladder is contracted, the handrail mechanism is more convenient to fold or store, and the whole occupied space of the escape ladder is small.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural view of an escape ladder according to an embodiment of the present invention, in which the escape ladder is in an operating state;

fig. 2 is a schematic structural view of an escape ladder according to an embodiment of the present invention, wherein the escape ladder is in a contracted state, and soft handrail portions are not shown in the figure;

fig. 3 is a schematic structural view of a railway vehicle according to an embodiment of the present invention, in which an escape ladder is in an operating state;

fig. 4 is a schematic structural view of a railway vehicle according to an embodiment of the present invention, in which the escape ladder is in a contracted state, and soft handrail parts are not shown in the figure;

fig. 5 is a partial schematic structural view of an escape ladder according to an embodiment of the present invention in an operating state;

fig. 6 is a partial structural view illustrating a contracted state of the escape ladder according to an embodiment of the present invention, in which the soft handrails are not shown;

FIG. 7 is a schematic view of a portion of the structure at A in FIG. 3;

fig. 8 is a partial structural view at B in fig. 3;

FIG. 9 is a schematic view of a portion of the structure at C in FIG. 6;

fig. 10 is another partial structural view illustrating a collapsed escape ladder according to an embodiment of the present invention.

Reference numerals:

100. an escape ladder;

1. a ladder frame mechanism;

11. a telescopic part; 111. a first ladder section; 112. a second ladder section; 113. a telescopic positioning device; 1131. pulling a rope; 1132. a retractable positioning member;

12. a ladder frame mounting section; 121. a ladder mount; 1211. a circular hole; 1212. a waist-shaped hole; 13. a pedal;

2. an armrest mechanism;

21. an armrest unit; 211. a soft armrest portion; 2111. a first armrest portion; 2112. a second armrest portion; 2113. a third armrest portion;

212. an armrest support assembly; 2121. a first armrest support; 2121a, a first armrest support; 2121b, a first armrest mount; 2121c, a first receiving part; 2122. a second armrest support; 2122a, a second armrest support; 2122b, a second armrest mount; 2122c, a second receiving portion;

1000. a rail vehicle; 1001. an escape door; 1002. a vehicle body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the present invention, the terms of orientation such as "up, down", "left, right" used in the case where no description is made to the contrary refer to the up and down defined in the use state of the escape ladder 100, and specifically refer to fig. 3. Terms of orientation such as "inner" and "outer" are used to refer to the inner and outer of a particular structural outline, and terms such as "first" and "second" are used merely to distinguish one element from another, and are not sequential or significant. Furthermore, the directional terms used above are used merely to facilitate describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and should not be construed as limiting the invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides an escape ladder 100, the escape ladder 100 may be installed in a rail vehicle 1000 having an escape door 1001, the escape ladder 100 may be specifically disposed adjacent to the escape door 1001 or directly disposed on the escape door 1001 of the vehicle, the escape ladder 100 may be flipped down toward the outside when the escape door 1001 is opened, and the escape ladder 100 may be flipped up toward the inside of the vehicle and finally retracted at a side of the escape door 1001 facing the inside of the vehicle when the escape door 1001 is closed.

As shown in fig. 1 to 10, an escape ladder 100 according to an embodiment of the present invention includes a ladder frame mechanism 1 and a handrail mechanism 2;

the ladder frame mechanism 1 comprises a pedal 13 and two telescopic parts 11 arranged at intervals, the pedal 13 is arranged between the two telescopic parts 11 arranged at intervals, each telescopic part 11 comprises a first ladder section 111 and a second ladder section 112, and the second ladder section 112 is in telescopic connection with the first ladder section 111;

the handrail mechanism 2 comprises a handrail unit 21, and at least one telescopic part 11 is correspondingly provided with the handrail unit 21; the armrest unit 21 includes a soft armrest portion 211 and an armrest support assembly 212; the armrest support assembly 212 includes a first armrest support 2121 and a second armrest support 2122; the first armrest support part 2121 includes a first armrest support part 2121a, one end of the first armrest support part 2121a is fixed, and the other end can rotate relative to the fixed end; the second handrail support portion 2122 comprises a second handrail support 2122a, one end of the second handrail support 2122a is pivotally connected to the first block 111, and the other end is rotatable; the soft armrest portion 211 includes a first armrest portion 2111, one end of the first armrest portion 2111 being coupled to the other end of the first armrest support 2121a, the other end of the first armrest portion 2111 being coupled to the other end of the second armrest support 2122 a;

when the escape ladder 100 is in an operating state, the second ladder section 112 is extended from the first ladder section 111, and the first handrail portion 2111 is tensioned and positioned above the telescopic portion 11.

As shown in fig. 1 to 10, since the arc shape of the head of the rail vehicle 1000 is steep, if one end of the soft armrest portion 211 is directly connected to the vehicle body 1002 and the other end is directly connected to the first step 111, the soft armrest portion 211 interferes with the vehicle body 1002, or even if the soft armrest portion 211 does not interfere with the vehicle body 1002, the height of the soft armrest portion 211 after being tensioned generally does not reach the desired height, and a human hand cannot normally contact the soft armrest portion 211 when a person walks on the ladder mechanism 1. In order to solve the above-mentioned problems, the emergency ladder 100 according to the embodiment of the present invention is provided with the first armrest support 2121a and the second armrest support 2122a, and when the emergency ladder 100 is in the operating state, the first armrest support 2121a and the second armrest support 2122a can increase the height of the first armrest portion 2111 by the rotation of the respective rotating ends, so that a person can touch the first armrest portion 2111 when he is on the ladder frame mechanism 1.

As shown in fig. 1 to 10, specifically, when the escape door 1001 is opened, the emergency ladder 100 according to the embodiment of the present invention is turned downward toward the outside of the vehicle, and the rotatable end of the first armrest support 2121a is turned downward at a certain angle with respect to the vehicle body 1002 and then stops; when the ladder frame mechanism 1 is turned downward by a certain angle toward the outside of the vehicle, the rotatable end of the second handrail support 2122a rotates upward with respect to the first ladder section 111 until it stops after rotating by a certain angle, and the first handrail portion 2111 connected to the first handrail support 2121a and the second handrail support 2122a is tensioned.

As shown in fig. 1 to 10, when the escape ladder 100 is in a collapsed state, the escape ladder 100 is flipped upward in the vehicle interior direction, at this time, the rotatable end of the first handrail support 2121a is rotated upward at a certain angle with respect to the vehicle body 1002 and then stopped, the rotatable end of the second handrail support 2122a is rotated in a direction close to the first block 111 and rotated to be juxtaposed with the first block 111 and then stopped, and the escape ladder 100 is collapsed in the vehicle interior in an inverted state. It should be noted that, in the present embodiment, the power source required for the first armrest support 2121a and the second armrest support 2122a to rotate when the escape ladder 100 is flipped upward in the vehicle interior direction is not limited.

Through the technical scheme, according to the escape ladder 100 provided by the embodiment of the invention, as the handrail part of the handrail mechanism 2 is the soft handrail part 211, when the escape ladder 100 is contracted and the escape door 1001 is closed, the handrail mechanism 2 is more convenient to fold or store, and the whole occupied space of the escape ladder 100 is small. The escape ladder 100 has a simple structure and can be switched to a state with a small volume, and when the escape ladder 100 is placed in a vehicle, the occupied space can be greatly reduced. The escape ladder 100 provided by the embodiment of the invention can be automatically unfolded when the escape door 1001 is opened and the escape ladder 100 is turned downwards towards the outside of the vehicle, so that the physical strength and the escape time are saved, and people in the vehicle can conveniently escape in time.

Specifically, the first steps 111 of the two spaced telescopic parts 11 are distributed correspondingly, and the pedal 13 is disposed between the spaced first steps 111. Further, the second ladder sections 112 of the two telescopic parts 11 arranged at intervals are correspondingly distributed, and the end of the second ladder sections 112 arranged at intervals is provided with the pedal 13.

Specifically, the soft armrest portion 211 may be a rope, a drawstring, a wire rope, or the like, and is not limited thereto.

Preferably, the second handrail support 2122a is pivotally connected to the first ladder section 111.

As shown in fig. 1 to 10, in one embodiment of the present invention, the first armrest support part 2121 further includes a first armrest mount 2121b, and the first armrest mount 2121b is fixed with respect to one end of the first armrest support part 2121 a; preferably, the first armrest mounting seat 2121b is fixedly installed on the doorframe of the escape door 1001;

the soft armrest portion 211 further includes a second armrest portion 2112, one end of the second armrest portion 2112 being connected to the other end of the first armrest support 2121a, the other end of the second armrest portion 2112 being connected to the first armrest mount 2121 b; specifically, since the first armrest mounting seat 2121b is fixed, when the emergency ladder 100 is in an operating state, after the rotatable end of the first armrest support 2121a rotates downward at a certain angle with respect to the vehicle body 1002, the second armrest portion 2112 is tensioned, and then the rotatable end of the first armrest support 2121a stops rotating; when the emergency ladder 100 is in the retracted state, the emergency ladder 100 is flipped upward in the vehicle interior direction, and the rotatable end of the first armrest support 2121a is rotated upward by a certain angle with respect to the vehicle body 1002 and then stopped, so that the second armrest portion 2112 is more conveniently folded or stored.

As shown in fig. 1 to 10, in one embodiment of the present invention, the second handrail supporting part 2122 further includes a second handrail mounting seat 2122b, and the second handrail mounting seat 2122b is provided on the first block 111; specifically, the second armrest mount 2122b is farther from the vehicle body 1002 than the rotatable end of the second armrest support 2122a, i.e., the rotatable end of the second armrest support 2122a is disposed between the second armrest mount 2122b and the vehicle body 1002;

the soft armrest portion 211 further includes a third armrest portion 2113, one end of the third armrest portion 2113 being coupled to the other end of the second armrest support 2122a, the other end of the third armrest portion 2113 being coupled to the second armrest mount 2122 b; when the emergency ladder 100 is in an operating state, since the first handrail mounting seat 2121b is fixed, after the rotatable end of the first handrail support 2121a rotates downward by a certain angle with respect to the car body 1002, the second handrail portion 2112 is tensioned, the rotatable end of the first handrail support 2121a stops rotating, the first handrail portion 2111 is tensioned and pulls the rotatable end of the second handrail support 2122a to rotate upward by a certain angle with respect to the first ladder section 111, the third handrail portion 2113 is tensioned, and the rotatable end of the second handrail support 2122a stops rotating upward with respect to the first ladder section 111.

The rotatable end of the second handrail support 2122a rotates upward with respect to the first block 111 until it stops after rotating a certain angle, and the first handrail portion 2111 connected to the first handrail support 2121a and the second handrail support 2122a is tensioned.

As shown in fig. 1 to 10, specifically, when the escape door 1001 is opened, the escape ladder 100 is flipped downward toward the outside of the vehicle, the rotatable end of the first armrest support 2121a is rotated downward with respect to the vehicle body 1002, and since the first armrest mount 2121b is fixed with respect to one end of the first armrest support 2121a, the rotatable end of the first armrest support 2121a stops rotating as the second armrest portion 2112 is tensioned when the escape ladder 100 is flipped downward by a certain angle; when the ladder frame mechanism 1 is turned downward by a certain angle toward the outside of the vehicle, the first handrail portion 2111 is tensioned and pulls the rotatable end of the second handrail support 2122a to rotate upward by a certain angle with respect to the first ladder section 111, and since one end of the third handrail portion 2113 is connected to the rotatable end of the second handrail support 2122a and the other end of the third handrail portion 2113 is connected to the second handrail mount base 2122b, when the rotatable end of the second handrail support 2122a is rotated upward by a certain angle with respect to the first ladder section 111, the third handrail portion 2113 is tensioned and the rotatable end of the second handrail support 2122a stops rotating.

When the escape ladder 100 is in the collapsed state, the escape ladder 100 is flipped up, the rotatable end of the first armrest support 2121a is rotated up to be collapsed into the vehicle with respect to the vehicle body 1002, the rotatable end of the second armrest support 2122a is rotated to be juxtaposed with the first bench 111 in a direction close to the first bench 111 and then stopped, and finally the escape ladder 100 is collapsed into the vehicle in an inverted state. According to the emergency ladder 100 provided by the embodiment of the invention, when the emergency ladder 100 is in the contraction state, the first handrail support 2121a and the second handrail support 2122a are not only contracted in the vehicle, but also can rotate to the position occupying a very small space in the vehicle, so that the space occupied by the handrail mechanism 2 in the vehicle is greatly reduced, and the handrail mechanism 2 is simple in structure and easy to realize.

Preferably, the first armrest mount 2121b and the second armrest mount 2122b are aluminum tabs.

As shown in fig. 1 to 10, in one embodiment of the present invention, the first armrest support part 2121 further includes a first receiving part 2121c for receiving the first armrest support part 2121 a; when the escape ladder 100 is in a contracted state, the first armrest support 2121a rotates to the first receiving portion 2121 c. Preferably, the first receiving portion 2121c is disposed on the doorframe of the escape door 1001, and the extending direction of the first receiving portion 2121c is substantially the same as the trend of the doorframe of the escape door 1001, so as to reduce the space occupied by the first receiving portion 2121 c.

In one embodiment of the present invention, the second armrest support part 2122 further includes a second receiving portion 2122c for receiving the second armrest support part 2122 a; when the escape ladder 100 is in a contracted state, the second armrest support 2122a is rotated to the second receiving portion 2122 c. Preferably, the second receiving portion 2122c is disposed on the first step 111 and is parallel to the first step 111 to reduce the space occupied by the second receiving portion 2122 c.

Specifically, when the escape ladder 100 is in the retracted state, the escape ladder 100 is flipped upward, and the rotatable end of the first armrest support 2121a is rotated upward to the first accommodation portion 2121c with respect to the vehicle body 1002, at which time the first armrest support 2121a is retracted inside the vehicle; the rotatable end of the second handrail support 2122a is rotated in a direction to approach the first block 111 until it is rotated to the second receiving portion 2122c, and the escape ladder 100 is finally disposed in an inverted state in the vehicle;

when the escape door 1001 is opened, the escape ladder 100 is turned downward toward the outside of the vehicle, the rotatable end of the first armrest support 2121a is rotated downward with respect to the vehicle body 1002, the first armrest support 2121a is separated from the first receiving portion 2121c, and since the first armrest mount 2121b is fixed with respect to one end of the first armrest support 2121a, the second armrest portion 2112 is tensioned when the escape ladder 100 is turned downward at a certain angle, and the rotatable end of the first armrest support 2121a stops rotating; when the ladder frame mechanism 1 is turned downward by a certain angle toward the outside of the vehicle, the first handrail portion 2111 tensions and pulls the rotatable end of the second handrail support 2122a to rotate upward by a certain angle with respect to the first ladder section 111, because one end of the third handrail portion 2113 is connected to the rotatable end of the second handrail support 2122a and the other end of the third handrail portion 2113 is connected to the second handrail mount base 2122b, when the rotatable end of the second handrail support 2122a rotates upward with respect to the first ladder section 111, the second handrail support 2122a is separated from the second receiving portion 2122c, and when the rotatable end of the second handrail support 2122a rotates upward by a certain angle with respect to the first ladder section 111, the third handrail portion 2113 tensions and the rotatable end of the second handrail support 2122a stops rotating.

In one embodiment of the present invention, the first armrest support 2121a is a square tube, the first receiving portion 2121c is U-shaped, and when the first armrest support 2121a rotates to the first receiving portion 2121c, the first armrest support 2121a is received in the U-shaped first receiving portion 2121 c. Preferably, the second armrest support 2122a is also a square tube, the second receiving portion 2122c is also U-shaped, and when the second armrest support 2122a rotates to the second receiving portion 2122c, the second armrest support 2122a is received in the U-shaped second receiving portion 2122 c.

Specifically, when the escape ladder 100 is in the retracted state, the escape ladder 100 is flipped upward, and the rotatable end of the first armrest support 2121a is rotated upward to the first receiving portion 2121c with respect to the vehicle body 1002, at this time, the square-tube first armrest support 2121a is received in the U-shaped first receiving portion 2121c, and the first armrest support 2121a is retracted in the vehicle; the rotatable end of the second handrail support 2122a is rotated in a direction approaching the first block 111 until it is rotated to the second receiving portion 2122c, at which time the square second handrail support 2122a is received in the U-shaped second receiving portion 2122c, and the escape ladder 100 is finally disposed in an inverted state in the vehicle;

when the escape door 1001 is opened, the escape ladder 100 is turned downward toward the outside of the vehicle, the rotatable end of the first handrail support 2121a rotates downward relative to the vehicle body 1002, the square-tube first handrail support 2121a is separated from the U-shaped first receiving portion 2121c, and since the first handrail mount base 2121b is fixed relative to one end of the first handrail support 2121a, the second handrail portion 2112 is tensioned when the escape ladder 100 is turned downward by a certain angle, and the rotatable end of the first handrail support 2121a stops rotating; when the ladder frame mechanism 1 is turned downward by a certain angle toward the outside of the vehicle, the first handrail portion 2111 is tensioned and pulls the rotatable end of the second handrail support 2122a to rotate upward by a certain angle with respect to the first ladder section 111, since one end of the third handrail portion 2113 is connected to the rotatable end of the second handrail support 2122a and the other end of the third handrail portion 2113 is connected to the second handrail mount base 2122b, when the rotatable end of the second handrail support 2122a rotates upward with respect to the first ladder section 111, the square-tube second handrail support 2122a is separated from the U-shaped second receiving portion 2122c, and when the rotatable end of the second handrail support 2122a rotates upward by a certain angle with respect to the first ladder section 111, the third handrail portion 3 is tensioned and the rotatable end of the second handrail support 2122a stops rotating.

In one embodiment of the present invention, the armrest unit 21 further includes a storage positioning device (not shown). A storage positioning device (not shown) is provided to allow the first armrest support 2121a to be firmly stored in the U-shaped first storage portion 2121c and the second armrest support 2122a to be firmly stored in the U-shaped second storage portion 2122c when the escape ladder 100 is in the retracted state, so as to ensure the safety of the escape ladder 100 in the retracted state.

In an embodiment of the present invention, the accommodating and positioning device (not shown) includes an elastic positioning element (not shown) and a first positioning hole (not shown) that cooperates with the elastic positioning element (not shown) for positioning. Preferably, the resilient positioning element (not shown in the figures) is a plunger.

Specifically, each of the U-shaped first receiving portion 2121c and the U-shaped second receiving portion 2122c includes a base plate and side plates symmetrically disposed on two sides of the base plate, and the base plate is fixed on the escape door 1001; preferably, an elastic positioning member (not shown) is provided on the side plate, and a first positioning hole (not shown) is provided on a side wall of the first handrail support 2121a, the side wall being opposite to the side plate.

When the escape ladder 100 is in the retracted state, the escape ladder 100 is flipped upward, the rotatable end of the first armrest support 2121a is rotated upward to the first receiving portion 2121c with respect to the vehicle body 1002, and at this time, the square-tube first armrest support 2121a is received in the U-shaped first receiving portion 2121c, and the elastic positioning element (not shown) is positioned in the first positioning hole (not shown); the rotatable end of the second handrail support 2122a rotates towards the direction close to the first ladder section 111 until the second handrail support 2122c rotates to the second receiving portion 2122c, at this time, the square second handrail support 2122a is received in the U-shaped second receiving portion 2122c, and the elastic positioning element (not shown) is positioned in the first positioning hole (not shown);

when the escape door 1001 is opened, the escape ladder 100 is turned downward in the direction outside the vehicle, the rotatable end of the first armrest support 2121a is rotated downward relative to the vehicle body 1002, the elastic positioning element (not shown) is positioned away from the first positioning hole (not shown), the square-tube first armrest support 2121a is disengaged from the U-shaped first receiving portion 2121c, and since the first armrest mount 2121b is fixed relative to one end of the first armrest support 2121a, when the escape ladder 100 is turned downward by a certain angle, the second armrest portion 2112 is tensioned, and the rotatable end of the first armrest support 2121a stops rotating; when the ladder frame mechanism 1 is turned downward by a certain angle toward the outside of the vehicle, the first handrail portion 2111 is tensioned and pulls the rotatable end of the second handrail support 2122a to rotate upward by a certain angle with respect to the first ladder section 111, since one end of the third armrest portion 2113 is coupled to the rotatable end of the second armrest support 2122a, the other end of the third armrest portion 2113 is coupled to the second armrest mount 2122b, when the rotatable end of the second handrail support 2122a rotates upward with respect to the first block 111, the elastic positioning member (not shown) is positioned to be separated from the first positioning hole (not shown), the square-tube second handrail support 2122a is separated from the U-shaped second receiving portion 2122c, when the rotatable end of the second handrail support 2122a is rotated upward by a certain angle with respect to the first block 111, the third armrest portion 2113 is tensioned, and the rotatable end of the second armrest support 2122a stops rotating.

As shown in fig. 1 to 10, in one embodiment of the present invention, the ladder mechanism 1 further includes a ladder mounting portion 12, the ladder mounting portion 12 includes two ladder mounting members 121 disposed at intervals, and one ladder mounting member 121 is connected to an end of each first ladder section 111 away from the second ladder section 112.

Since the deployment direction of the escape ladder 100 is fixed, if the escape ladder 100 is deployed in a curved road, the escape ladder 100 may form a certain angle with the escape passage on the track, and if the bottom of the escape ladder 100 cannot be deployed to a proper position, passengers cannot safely escape. In order to solve the above problem, in an embodiment of the present invention, each ladder frame mounting member 121 is provided with a hinge hole, wherein the hinge hole of one ladder frame mounting member 121 is a circular hole 1211, and the hinge hole of the other ladder frame mounting member 121 is a kidney-shaped hole 1212. Preferably, the diameter of the round hole 1211 is slightly larger than the diameter of the pin inserted into the round hole 1211, when the escape door 1001 is opened, and the escape ladder 100 is turned downwards relative to the car body 1002 and unfolded, the ladder frame mounting portion 12 is provided with hinge holes, one of the hinge holes is the round hole 1211, and the other is the waist-shaped hole 1212, so that the escape ladder 100 can be turned leftwards or rightwards relative to the car body 1002 by a certain angle, thereby satisfying the requirement that the bottom of the escape ladder 100 can be unfolded to a proper position under the condition of a curved road, and ensuring the safe distance from the bottom of the escape ladder 100 to an escape passage when a passenger escapes.

As shown in fig. 1 to 10, in an embodiment of the present invention, a telescopic positioning device 113 is further provided on the telescopic part 11. The telescopic positioning device 113 can ensure that the second ladder section 112 can extend out of the first ladder section 111 only after the escape ladder 100 is unfolded to a certain state, thereby avoiding that passengers can not escape safely because the bottom of the escape ladder 100 can not be unfolded to a proper position.

In one embodiment of the present invention, the retractable positioning device 113 comprises a pull rope 1131 and a retractable positioning member 1132; one end of the pulling rope 1131 is connected to the second armrest support 2122a, and the other end of the pulling rope 1131 is connected to the retractable positioning member 1132;

the sidewall of the first step section 111 is provided with a second positioning hole, and the retractable positioning member 1132 is telescopically disposed in the second positioning hole, so that when the emergency ladder 100 is in an operating state, the pulling rope 1131 is tensioned and pulls the retractable positioning member 1132 to extend out relative to the first step section 111, so as to extend the second step section 112 out of the first step section 111.

Preferably, a third positioning hole is formed in a side wall of the second step section 112, and the third positioning hole is used for being matched with the retractable positioning element 1132 and the second positioning hole to position and lock the second step section 112, when the escape ladder 100 is in a retracted state, the escape ladder 100 turns upwards, the second step section 112 can be retracted into the first step section 111 under the action of gravity after turning upwards, and the retractable positioning element 1132 is retracted into the second positioning hole and the third positioning hole and positions and locks the second step section 112; when the escape ladder 100 is in the operating position, the tension cord 1131 tensions and pulls the retractable positioning member 1132 to extend relative to the first ladder section 111, so that the second ladder section 112 extends from the first ladder section 111. Preferably, the pull cord 1131 is a steel cord.

In one embodiment of the present invention, when the escape ladder 100 is in the retracted state, the escape ladder 100 is flipped upward, the second step 112 can be retracted into the first step 111 by gravity after being flipped upward, and the retractable positioning members 1132 are retracted into the second positioning holes and the third positioning holes and perform positioning locking on the second step 112, so that when the escape ladder 100 is disposed in the vehicle upside down, the second step 112 is relatively fixed.

When the escape door 1001 is opened, the escape ladder 100 is turned downwards towards the outside of the vehicle, when the escape ladder 100 is turned downwards by a certain angle, the second armrest support 2122a rotates upwards relative to the first step section 111, when the second armrest support 2122a rotates upwards by a certain angle relative to the first step section 111, the pulling rope 1131 is tensioned and pulls the telescopic positioning element 1132 to extend out from the third positioning hole and the second positioning hole in sequence, the telescopic positioning element 1132 no longer has a positioning and locking effect on the second step section 112, and the second step section 112 extends out from the first step section 111 under the action of gravity.

In the process that the escape ladder 100 is turned downwards towards the outside of the vehicle, the telescopic positioning device 113 can automatically release the positioning and locking effects on the second ladder section 112, and the second ladder section 112 extends out of the first ladder section 111 under the action of gravity, so that the whole escape ladder 100 is automatically unfolded to a use state, the escape ladder 100 does not need to be manually placed, the physical strength and the escape time are saved, and people in the vehicle can conveniently escape to the ground in time.

As shown in fig. 1 to 10, in one embodiment of the present invention, one armrest unit 21 is provided for each telescopic part 11. Specifically, each armrest unit 21 includes a soft armrest portion 211 and an armrest support assembly 212; the armrest support assembly 212 includes a first armrest support 2121 and a second armrest support 2122; the first armrest support part 2121 includes a first armrest support part 2121a, one end of which is fixed and the other end of which is rotatable; the second handrail support portion 2122 comprises a second handrail support 2122a, one end of the second handrail support 2122a is pivotally connected to the first block 111, and the other end is rotatable; the soft armrest portion 211 includes a first armrest portion 2111, one end of the first armrest portion 2111 being attached to the other end of the first armrest support 2121a, and the other end of the first armrest portion 2111 being attached to the other end of the second armrest support 2122 a.

In this embodiment, it is preferable that each of the first armrest support portions 2121 further includes a first armrest mount 2121b, and two first armrest mounts 2121b are respectively disposed at two side door frames of the escape door 1001; each of the second handrail supporting parts 2122 further includes second handrail mounting seats 2122b, and the second handrail mounting seats 2122b are symmetrically disposed on the two first flights 111.

In the present embodiment, preferably, the soft armrest portion 211 further includes a second armrest portion 2112, one end of the second armrest portion 2112 is connected to the other end of the first armrest support 2121a, and the other end of the second armrest portion 2112 is connected to the first armrest mount 2121 b; when the escape ladder 100 is in the operating state, the second handrail portion 2112 is tensioned;

the soft armrest portion 211 further includes a third armrest portion 2113, one end of the third armrest portion 2113 being coupled to the other end of the second armrest support 2122a, the other end of the third armrest portion 2113 being coupled to the second armrest mount 2122 b; when the escape ladder 100 is in an operating state, the third handrail portion 2113 is tensioned.

In this embodiment, it is preferable that each of the first armrest supports 2121 further includes a first receiving portion 2121c for receiving the first armrest support 2121a, and each of the second armrest supports 2122 further includes a second receiving portion 2122c for receiving the second armrest support 2122 a. More preferably, the first armrest support 2121a is a square tube, the first receiving portion 2121c is U-shaped, and when the first armrest support 2121a rotates to the first receiving portion 2121c, the first armrest support 2121a is received in the U-shaped first receiving portion 2121 c; the second armrest support 2122a is also a square tube, the second receiving portion 2122c is also U-shaped, and when the second armrest support 2122a is rotated to the second receiving portion 2122c, the second armrest support 2122a is received in the U-shaped second receiving portion 2122 c.

In this embodiment, the armrest unit 21 further preferably includes a storage positioning device (not shown), and the storage positioning device (not shown) includes an elastic positioning element (not shown) and a first positioning hole (not shown) that cooperates with the elastic positioning element (not shown) for positioning.

In this embodiment, preferably, each telescopic part 11 is provided with a telescopic positioning device 113, and the telescopic positioning devices 113 correspond to the second handrail supports 2122a one to one;

further, each telescopic positioning device 113 comprises a pulling rope 1131 and a telescopic positioning member 1132; one end of each pull string 1131 is connected to the corresponding second arm support 2122a, and the other end of each pull string 1131 is connected to the corresponding retractable positioning member 1132; a second positioning hole is formed in a side wall of each first step section 111, and each retractable positioning member 1132 is telescopically disposed in the corresponding second positioning hole, so that when the escape ladder 100 is in an operating state, the pulling rope 1131 is tensioned and pulls the corresponding retractable positioning member 1132 to extend out relative to the first step section 111, so that the second step section 112 extends out from the first step section 111.

In an embodiment of the present invention, the first step 111 and the second step 112 are both square tubes, the first step 111 is hollow, and the second step 112 is telescopically disposed in the hollow cavity of the first step 111. Further, there is a certain gap between the inner wall of the first step 111 and the outer side wall of the second step 112.

Preferably, the first ladder section 111 is an aluminum alloy square tube, the second ladder section 112 is an aluminum alloy section, and the second ladder section 112 can slide in a hollow cavity of the first ladder section 111 to realize the extending function.

As shown in fig. 3 to 4, in the rail vehicle 1000 according to the embodiment of the present invention, the rail vehicle 1000 has the escape door 1001, the escape ladder 100 may be disposed adjacent to the escape door 1001 or directly on the escape door 1001 of the vehicle, the escape ladder 100 may be turned downward toward the outside of the vehicle when the escape door 1001 is opened, and the escape ladder 100 may be turned upward toward the inside of the vehicle and finally retracted at a side of the escape door 1001 facing the inside of the vehicle when the escape door 1001 is closed.

The embodiment of the invention provides a rail transit system, which comprises a rail, wherein an escape passage is arranged on the rail, a rail vehicle 1000 is arranged on the rail, the rail vehicle 1000 straddles the rail, and the rail vehicle 1000 is provided with an escape door 1001; the escape ladder 100 and the escape ladder 100 are the escape ladder 100 according to any of the above embodiments, the escape ladder 100 is arranged adjacent to the escape door 1001, when the escape ladder 100 is in an operating state, the ladder frame mechanism 1 of the escape ladder 100 extends out of the rail vehicle 1000, the second ladder section 112 extends out of the first ladder section 111, and the second ladder section frame 112 is arranged on an escape passage, so that the safety and the stability of the escape ladder 100 during passenger escape are guaranteed.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.