CN111746572B - Escape ladder, rail vehicle and rail transit system - Google Patents
Escape ladder, rail vehicle and rail transit system Download PDFInfo
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- CN111746572B CN111746572B CN201910230271.9A CN201910230271A CN111746572B CN 111746572 B CN111746572 B CN 111746572B CN 201910230271 A CN201910230271 A CN 201910230271A CN 111746572 B CN111746572 B CN 111746572B
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- escape
- joint
- escape ladder
- lock cylinder
- guide post
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D23/00—Construction of steps for railway vehicles
- B61D23/02—Folding steps for railway vehicles, e.g. hand or mechanically actuated
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Abstract
The invention provides an escape ladder, a rail vehicle and a rail transit system, which comprise a fixed rod and a plurality of pedals, wherein the fixed rod comprises a plurality of folding sections, two adjacent folding sections are rotationally connected through a self-locking mechanism, the self-locking mechanism comprises a first joint and a second joint rotationally connected to the first joint, the first joint is fixedly connected with one of the two adjacent folding sections, the second joint is fixedly connected with the other of the two adjacent folding sections, a lock tongue is arranged on the first joint, a lock cylinder capable of moving vertically is arranged on the second joint, and when the two adjacent folding sections rotate to be in a collinear state, the self-locking mechanism locks the rotation between the two folding sections; each pedal is arranged on the fixed rod. The escape ladder for the railway vehicle is simple in structure and can be switched to a state with a small size, so that when the escape ladder is placed in the railway vehicle, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to an escape ladder, a rail vehicle and a rail transit system.
Background
In the related art, when a railway vehicle is in emergency stop in a running state, and the railway vehicle has a large distance from the ground, an escape ladder needs to be put down at an escape door after the escape door is opened, so that the escape ladder can escape from the interior of the vehicle to the ground in time. In the related art, the escape ladder has large volume and complex structure, occupies large space when being placed in a railway vehicle, and influences the appearance in the vehicle.
Disclosure of Invention
In view of the above technical problems, the invention provides an escape ladder for a rail vehicle, which has a simple structure and can be switched to a state with a smaller volume, so that when the escape ladder is placed in the rail vehicle, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
The specific technical scheme of the invention is as follows:
an escape ladder for a rail vehicle, comprising:
the fixing rod comprises a plurality of folding sections, two adjacent folding sections are rotatably connected through a self-locking mechanism, the self-locking mechanism comprises a first joint and a second joint rotatably connected to the first joint, the first joint is fixedly connected with one of the two adjacent folding sections, the second joint is fixedly connected with the other of the two adjacent folding sections, a lock tongue is arranged on the first joint, a vertically movable lock cylinder is arranged on the second joint, when the two adjacent folding sections rotate to be in a collinear state, the lock tongue is matched with the lock cylinder, and the self-locking mechanism locks the rotation between the two folding sections;
a plurality of pedals, every the footboard all sets up on the dead lever.
When the escape ladder needs to be used, the plurality of folding sections of the fixing rod are unfolded, the self-locking mechanism locks the rotation between the folding sections, so that the escape ladder is converted into a state capable of being used for people to walk, the people leave from the rail vehicle when an emergency occurs, and the rail vehicle has more reliable safety. When the escape ladder is not needed to be used, the self-locking mechanism is unlocked, and the plurality of folding sections of the fixing rod are folded, namely, the length of the escape ladder is reduced to the minimum as much as possible, so that when the escape ladder is placed in the railway vehicle, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
In addition, the escape ladder according to the present invention may have the following additional technical features.
In some examples of the invention, the second joint is provided with a receiving groove for mounting the lock cylinder such that the lock cylinder moves vertically in the receiving groove.
In some examples of the present invention, the second joint includes a body, and a left leg and a right leg which are oppositely spaced from each other and disposed at a rear end of the body, the body is fixedly connected to the corresponding folding section of the second joint, and the receiving groove is formed between the left leg and the right leg.
In some examples of the present invention, a first sliding groove is disposed on the left leg, a second sliding groove is disposed on the right leg, the first sliding groove and the second sliding groove are disposed opposite to each other, a left end of the lock cylinder is located in the first sliding groove, and a right end of the lock cylinder is located in the second sliding groove.
In some examples of the present invention, the first sliding groove is provided with a first guiding column, the second sliding groove is provided with a second guiding column, the left end of the lock cylinder is slidably mounted on the first guiding column, and the right end of the lock cylinder is slidably mounted on the second guiding column.
In some examples of the present invention, the left end of the key cylinder is provided with a first through hole, and the right end of the key cylinder is provided with a second through hole, the first through hole is matched with the first guide post, and the second through hole is matched with the second guide post.
In some examples of the present invention, in the left-right direction, the first sliding groove penetrates the left leg, the second sliding groove penetrates the right leg, and the first sliding groove and the second sliding groove are both elongated holes extending in the up-down direction; the lower end of the first guide post is fixed on the bottom wall of the first sliding chute, and the upper end of the first guide post is fixed on the upper wall of the first sliding chute; the lower end of the second guide post is fixed on the bottom wall of the second sliding groove, and the upper end of the second guide post is fixed on the upper wall of the second sliding groove.
In some examples of the present invention, the left leg is provided with a first stepped hole extending from an upper surface of the left leg to an upper wall of the first sliding chute for fixing an upper end of the first guide post; and a second stepped hole is formed in the right branch, extends from the upper surface of the right branch to the upper wall of the second sliding groove and is used for fixing the upper end of the second guide column.
In some examples of the present invention, the upper end of the first guide post and the upper end of the second guide post are fixed into the first stepped hole and the second stepped hole, respectively, by a set screw.
In some examples of the invention, a first elastic piece is arranged between the bottom surface of the left end of the lock cylinder and the bottom wall of the first sliding chute, and the first elastic piece is sleeved on the first guide column; and a second elastic piece is arranged between the bottom surface of the right end of the lock cylinder and the bottom wall of the second sliding groove, and the second elastic piece is sleeved on the second guide post.
In some examples of the present invention, a third stepped hole is formed on a bottom wall of the first sliding chute, for positioning a bottom of the first guide post and a bottom of the first elastic member; and a fourth stepped hole is formed in the bottom wall of the second sliding groove and used for positioning the bottom of the second guide column and the bottom of the second elastic piece.
In some examples of the invention, the bottom surface of the left end of the lock cylinder is provided with a fifth stepped hole for positioning the upper part of the first guide post and the upper part of the first elastic member; and a sixth stepped hole is formed in the bottom surface of the right end of the lock cylinder and used for positioning the upper part of the second guide column and the upper part of the second elastic piece.
In some examples of the invention, the first elastic member and the second elastic member are both springs.
In some examples of the present invention, the self-locking mechanism further includes a pin, and the left arm, the right arm, and the first joint are sequentially provided with a third through hole, a fourth through hole, and a fifth through hole, and the left arm and the right arm clamp the first joint on the second joint, so that the third through hole, the fourth through hole, and the fifth through hole are sequentially aligned to penetrate through the pin.
In some examples of the present invention, the left end of the pin protrudes out of the left side surface of the left support, the right end of the pin protrudes out of the right side surface of the right support, and both the left end and the right end of the pin are provided with elastic collars.
In some examples of the present invention, the first joint includes a connection portion and a pivot portion, the connection portion is fixedly connected to the folding section corresponding to the first joint, the pivot portion is connected to a front end of the connection portion, the latch is connected to a front end of the connection portion, and the latch is located at an upper side of the pivot portion such that a latch core avoiding groove is formed between the latch and the pivot portion.
In some examples of the present invention, the key cylinder has a rectangular parallelepiped shape, and a tapered groove is formed at an upper end of the key cylinder.
In some examples of the invention, the lock core is provided with anti-skid lines on the left side and the right side.
In some examples of the invention, the bolt is hook-shaped.
The invention also provides a rail vehicle, which comprises an escape door and the escape ladder provided by the invention; the escape ladder is arranged on the escape door. When the escape ladder needs to be used, the plurality of folding sections of the fixing rod are unfolded, the self-locking mechanism locks the rotation between the folding sections, so that the escape ladder is converted into a state capable of being used for people to walk, the people leave from the rail vehicle when an emergency occurs, and the rail vehicle has more reliable safety. When the escape ladder is not needed to be used, the self-locking mechanism is unlocked, and the plurality of folding sections of the fixing rod are folded, namely, the length of the escape ladder is reduced to the minimum as much as possible, so that when the escape ladder is placed in the railway vehicle, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
In some examples of the invention, the exit door and the escape ladder are both one; the escape door is arranged at one of two ends of the rail vehicle, and the escape ladder is correspondingly arranged; or the escape door and the escape ladder are two; the escape door is arranged at one of two ends of the railway vehicle, and the escape ladder is correspondingly arranged; the other escape door is arranged at the other end of the two ends of the railway vehicle, and the other escape ladder is correspondingly arranged.
The invention also provides a rail transit system, which comprises the rail beam and the rail vehicle provided by the invention; the rail vehicle is adapted to travel on the rail beam; the track beam is provided with an escape channel; the escape ladder of the railway vehicle is suitable for being arranged between the escape passage of the track beam and the escape door of the railway vehicle. When the escape ladder needs to be used, the plurality of folding sections of the fixing rod are unfolded, the self-locking mechanism locks the rotation between the folding sections, so that the escape ladder is converted into a state capable of being used for people to walk, the people leave from the rail vehicle when an emergency occurs, and the rail vehicle has more reliable safety. When the escape ladder is not needed to be used, the self-locking mechanism is unlocked, and the plurality of folding sections of the fixing rod are folded, namely, the length of the escape ladder is reduced to the minimum as much as possible, so that when the escape ladder is placed in the railway vehicle, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
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
Fig. 1 is a schematic view illustrating a state where steps of an escape ladder according to an embodiment of the present invention are unfolded.
Fig. 2 is a schematic view illustrating a state in which steps of an escape ladder according to an embodiment of the present invention are retracted.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Fig. 4 is a partially enlarged view of a portion B in fig. 2.
Fig. 5 is a schematic view illustrating a folded state of the escape ladder according to the embodiment of the present invention.
Fig. 6 is a side view of an escape ladder according to an embodiment of the present invention.
Fig. 7 is a sectional view showing an unlocked state of the self-locking mechanism of the escape ladder according to the embodiment of the present invention.
Fig. 8 is a sectional view showing a locking state of the self-locking mechanism of the escape ladder according to the embodiment of the present invention.
Fig. 9 is a schematic view of a rail vehicle provided by an embodiment of the invention.
Fig. 10 is a partially enlarged view of a portion C in fig. 9.
Fig. 11 is a partially enlarged view of a portion D in fig. 9.
Fig. 12 is a schematic view of a rail transit system provided by an embodiment of the present invention.
Fig. 13 is a partial cross-sectional view of a rail vehicle provided by an embodiment of the present invention.
Fig. 14 is an exploded view of a self-locking mechanism of an escape ladder according to an embodiment of the present invention.
Reference numerals:
100: an escape ladder;
1: fixing the rod; 11: a folding section; 12: a self-locking mechanism; 121: a first joint; 121a: a connecting portion; 121b: a latch bolt; 121c: a pivot portion; 121c1: a fifth through hole; 121d: a lock cylinder avoidance slot; 122: a second joint; 122a: a body; 122b: a left branch; 122b4: a first stepped hole; 122c: a right branch; 122c1: a fourth via hole; 122c2: a fourth stepped hole; 122c3: a second chute; 122c4: a second stepped bore; 122d: accommodating a tank; 123: a lock cylinder; 123a: a chute; 123b: a first through hole; 123c: a second through hole; 123d: anti-skid lines; 124: a pin shaft; 125: a circlip; 126a: a first guide post; 126b: a second guide post; 127a: a first elastic member; 127b: a second elastic member; 128: tightening the screw;
2: a telescopic rod; 21: a first link; 22: a second link;
3: a pedal;
4: a linkage;
5: a connecting curved rod; 5a: a diagonal segment rod; 5b: a flat section bar; 51: a stopper; 52: a limiting part;
6: a tension member;
200: a rail vehicle; 210: an escape door; 211: an escape door mask; 212: a lower fixed seat; 213: an upper fixed seat; 2131: a rotating arm; 2132: a fixing clip; 214: a floor plane;
300: a track beam; 310: an escape passage;
1000: a rail transit system.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions 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 description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "vertical", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Wherein the content of the first and second substances,xthe axial direction is a transverse direction,xthe positive direction of the axis is the right direction,xthe axial negative direction is left;ythe axial direction is the longitudinal direction,ythe positive direction of the axis is the front direction,ythe negative axis direction is back;zthe axial direction is vertical or vertical, the positive direction of the Z axis is up, and the negative direction of the Z axis is down. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
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; the connection can be mechanical connection or electrical connection; 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.
An escape ladder 100, a rail vehicle 200 and a rail transit system 1000 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 14, the rail vehicle 200 being adapted to run on a rail beam 300. The rail vehicle 200 further includes an escape door 210, and the escape ladder 100 is provided on the escape door 210. When the escape ladder 100 is not needed, namely the rail vehicle 200 runs normally, the escape door 210 is closed, and the escape ladder 100 is placed in the rail vehicle 200; when the escape ladder 100 is required to be used, that is, the rail vehicle 200 cannot run in an emergency and a person needs to leave the rail vehicle 200, the escape door 210 is opened, and the escape ladder 100 can be lapped between the rail vehicle 200 and the rail beam 300, so that the person can be transferred from the rail vehicle 200 to the rail beam 300 through the escape ladder 100 and then leaves the rail beam 300, thereby completing escape.
The escape ladder 100 for the rail vehicle 200 provided by the embodiment of the invention comprises a fixing rod 1 and a plurality of pedals 3.
As shown in fig. 1, 3 and 8, the fixing lever 1 includes a plurality of folding sections 11. Two adjacent folding sections 11 are rotatably connected through a self-locking mechanism 12. The self-locking mechanism 12 comprises a first joint 121 and a second joint 122 rotatably connected to the first joint 121, the first joint 121 is fixedly connected with one of the two adjacent folding sections 11, the second joint 122 is fixedly connected with the other of the two adjacent folding sections 11, a lock tongue 121b is arranged on the first joint 121, a lock cylinder 123 capable of moving vertically is arranged on the second joint 122, when the two adjacent folding sections 11 rotate to a collinear state, the lock tongue 121b is matched with the lock cylinder 123, and the self-locking mechanism 12 locks the rotation between the two folding sections 11; each pedal 3 is provided on the fixing bar 1 for a person to step on to transfer from the rail vehicle 200 to the rail beam 300.
When the escape ladder 100 needs to be used, the plurality of folding sections 11 of the fixing rod 1 are unfolded, and the self-locking mechanism 12 locks the rotation among the plurality of folding sections 11, so that the escape ladder 100 is converted into a state in which people can walk, the people leave from the rail vehicle 200 in case of emergency, and the rail vehicle 200 has more reliable safety. When the escape ladder 100 is not required to be used, the locking of the self-locking mechanism 12 is released and the plurality of folding sections 11 of the fixing lever 1 are folded, i.e., the length of the escape ladder 100 is minimized as much as possible, so that the occupied space is greatly reduced and the negative influence on the in-car look and feel is reduced when the escape ladder 100 is placed in the railway vehicle 200.
As shown in fig. 7, 8 and 14, the second joint 122 is provided with a receiving groove 122d, and the receiving groove 122d is used for mounting the lock cylinder 123 such that the lock cylinder 123 moves vertically in the receiving groove 122d. Through set up holding tank 122d on second joint 122, the installation of lock core 123 of can being convenient for, make lock core 123 can be vertical removal in holding tank 122d, make consequently when two adjacent folding sections 11 rotate to collinear state, spring bolt 121b and the cooperation of lock core 123, self-locking mechanism 12 locks the rotation between these two folding sections 11, this simple structure, easily realize the vertical removal of lock core 123 on second joint 122, the manufacturing of being convenient for simultaneously, be favorable to reducing manufacturing cost.
As shown in fig. 7, 8 and 14, the second joint 122 includes a body 122a, and a left leg 122b and a right leg 122c which are oppositely disposed at a rear end of the body 122a at an interval, the body 122a is fixedly connected with the corresponding folding segment 11 of the second joint 122, and a receiving groove 122d is formed between the left leg 122b and the right leg 122 c. This simple structure easily realizes the vertical removal of lock core 123 on second joint 122, and the manufacturing of being convenient for simultaneously is favorable to reducing manufacturing cost.
As shown in fig. 7, 8 and 14, a first sliding slot (not shown) is disposed on the left leg 122b, a second sliding slot 122c3 is disposed on the right leg 122c, the first sliding slot and the second sliding slot 122c3 are disposed oppositely, a left end of the lock cylinder 123 is located in the first sliding slot, and a right end of the lock cylinder 123 is located in the second sliding slot 122c 3. First spout and second spout 122c 3's setting, the installation of lock core 123 can be convenient for, make lock core 123 can be vertical removal in holding tank 122d, make consequently when two adjacent folding sections 11 rotate to the collinear state, spring bolt 121b and lock core 123 cooperation, self-locking mechanism 12 carries out the locking to the rotation between these two folding sections 11, this simple structure, easily realize the vertical removal of lock core 123 on second joint 122, the manufacturing of being convenient for simultaneously, be favorable to reducing manufacturing cost.
As shown in fig. 7, 8 and 14, the first sliding slot is provided with a first guiding post 126a, the second sliding slot 122c3 is provided with a second guiding post 126b, the left end of the lock cylinder 123 is slidably mounted on the first guiding post 126a, and the right end of the lock cylinder 123 is slidably mounted on the second guiding post 126b. The arrangement of the first guide column 126a and the second guide column 126b can facilitate the installation and positioning of the lock cylinder 123, so that the lock cylinder 123 can stably move in the accommodating groove 122d, thereby enabling the lock tongue 121b to be matched with the lock cylinder 123 when the two adjacent folding sections 11 rotate to a collinear state, and the self-locking mechanism 12 locks the rotation between the two folding sections 11, so that the structure is simple, the vertical movement of the lock cylinder 123 on the second joint 122 is easily realized, and meanwhile, the processing and manufacturing are convenient, and the manufacturing cost is favorably reduced.
As shown in fig. 7, 8 and 14, the left end of the key cylinder 123 is provided with a first through hole 123b, the right end of the key cylinder 123 is provided with a second through hole 123c, the first through hole 123b is fitted to the first guide post 126a, and the second through hole 123c is fitted to the second guide post 126b. The arrangement of the first through hole 123b and the second through hole 123c can facilitate the installation of the lock cylinder 123, so that the lock cylinder 123 can slide on the first guide column 126a and the second guide column 126b and then vertically move in the accommodating groove 122d, thereby when two adjacent folding sections 11 rotate to a collinear state, the lock tongue 121b is matched with the lock cylinder 123, the self-locking mechanism 12 locks the rotation between the two folding sections 11, the structure is simple, the vertical movement of the lock cylinder 123 on the second joint 122 is easily realized, and meanwhile, the processing and manufacturing are convenient, and the manufacturing cost is favorably reduced.
As shown in fig. 7, 8 and 14, in the left-right direction, the first sliding groove penetrates the left leg 122b, the second sliding groove 122c3 penetrates the right leg 122c, and the first sliding groove and the second sliding groove 122c3 are both elongated holes extending in the up-down direction; the lower end of the first guiding column 126a is fixed on the bottom wall of the first sliding chute, and the upper end is fixed on the upper wall of the first sliding chute; the second guide post 126b has a lower end fixed to the bottom wall of the second slide groove 122c3 and an upper end fixed to the upper wall of the second slide groove 122c 3. From this processing and the manufacturing that can be convenient for first spout and second spout 122c3, reduce the processing cost, so that the installation of lock core 123, make lock core 123 can vertical migration in holding tank 122d, from this make when two adjacent folding sections 11 rotate to collinear state, spring bolt 121b and lock core 123 cooperate, self-locking mechanism 12 locks the rotation between these two folding sections 11, this simple structure, easily realize the vertical migration of lock core 123 on second joint 122, the processing manufacturing of being convenient for simultaneously, be favorable to reducing manufacturing cost.
As shown in fig. 7, 8 and 14, the left leg 122b is provided with a first stepped hole 122b4, and the first stepped hole 122b4 extends from the upper surface of the left leg 122b to the upper wall of the first sliding chute and is used for fixing the upper end of the first guide post 126 a; the right leg 122c is provided with a second stepped hole 122c4, and the second stepped hole 122c4 extends from the upper surface of the right leg 122c to the upper wall of the second sliding groove 122c3, for fixing the upper end of the second guiding post 126b. The first stepped hole 122b4 is arranged to limit the radial degree of freedom of the upper end of the first guide post 126a, so that the first guide post 126a can be fixedly installed, meanwhile, the first guide post 126a can be directly inserted into the first stepped hole 122b4 without being fixed by a fastener, the first guide post 126a can be conveniently installed and fixed, the second stepped hole 122c4 is arranged to limit the radial degree of freedom of the upper end of the second guide post 126b, so that the second guide post 126b can be fixedly installed, meanwhile, the second guide post 126b can be directly inserted into the second stepped hole 122c4 without being fixed by a fastener, and the second guide post 126b can be conveniently installed and fixed.
As shown in fig. 7, 8 and 14, the upper ends of the first and second guide posts 126a and 126b are fixed into the first and second stepped holes 122b4 and 122c4, respectively, by set screws 128. Therefore, the first guide column 126a and the second guide column 126b can be more stable, the movement of the lock cylinder 123 is more stable and reliable, meanwhile, the set screw 128 is simple in structure and convenient and fast to fix, screw heads of the set screw are directly embedded into the first stepped hole 122b4 and the second stepped hole 122c4 after being screwed down, the surfaces of the set screw are flush with the surfaces of the left support 122b and the right support 122c, and a user or a vehicle body is prevented from being scratched when the set screw is used.
As shown in fig. 7, 8 and 14, a first elastic member 127a is disposed between the bottom surface of the left end of the lock cylinder 123 and the bottom wall of the first sliding slot, and the first elastic member 127a is sleeved on the first guiding column 126 a; a second elastic element 127b is arranged between the bottom surface of the right end of the lock core 123 and the bottom wall of the second sliding groove 122c3, and the second elastic element 127b is sleeved on the second guiding column 126b. Therefore, the movement of the lock cylinder 123 can be reset, for example, when two adjacent folding sections 11 rotate to a collinear state, the lock tongue 121b collides with the lock cylinder 123 to enable the lock cylinder 123 to move downwards, and resets under the action of the elastic piece when moving downwards to a certain distance, the lock tongue 121b is matched with the lock cylinder 123, and the self-locking mechanism 12 locks the rotation between the two folding sections 11. Here, the first elastic member 127a and the second elastic member 127b are both springs.
As shown in fig. 7, 8 and 14, a third step hole (not shown) is formed on the bottom wall of the first sliding chute for positioning the bottom of the first guiding column 126a and the bottom of the first elastic element 127 a; a fourth stepped hole 122c2 is formed in a bottom wall of the second sliding chute 122c3 for positioning a bottom of the second guide post 126b and a bottom of the second elastic member 127 b. The third stepped hole may facilitate positioning of the bottom of the first guide post 126a, and the fourth stepped hole 122c2 may facilitate positioning of the bottom of the second guide post 126b.
As shown in fig. 7, 8 and 14, the bottom surface of the left end of the lock cylinder 123 is provided with a fifth stepped hole (not shown in the drawings, it is understood that the fifth stepped hole and the first through hole 123b are coaxially arranged) for positioning the upper portion of the first guide post 126a and the upper portion of the first elastic member 127 a; the right end bottom surface of the key cylinder 123 is provided with a sixth stepped hole (not shown in the drawings, it is understood that the sixth stepped hole and the second through hole 123c are coaxially disposed) for positioning an upper portion of the second guide post 126b and an upper portion of the second elastic member 127 b. The fifth and sixth stepped holes may be provided to facilitate positioning of the first and second elastic members 127a and 127b, an upper portion of the first elastic member 127a may be positioned in the fifth stepped hole, and an upper portion of the second elastic member 127b may be positioned in the sixth stepped hole.
As shown in fig. 7, 8 and 14, the self-locking mechanism 12 further includes a pin 124, a third through hole (not shown), a fourth through hole 122c1 and a fifth through hole 121c1 are sequentially disposed on the left branch 122b, the right branch 122c and the first joint 121, and the first joint 121 is clamped on the second joint 122 by the left branch 122b and the right branch 122c, so that the third through hole, the fourth through hole 122c1 and the fifth through hole 121c1 are sequentially aligned to penetrate the pin 124. The structure is simple, and the processing and manufacturing are convenient, so that the rotation between the first joint 121 and the second joint 122 is convenient to realize.
As shown in fig. 7, 8 and 14, the left end of the pin 124 protrudes out of the left side surface of the left support 122b, the right end of the pin 124 protrudes out of the right side surface of the right support 122c, and the left end and the right end of the pin 124 are both provided with elastic collars 125. The pin 124 can thereby be positioned to prevent play of the pin 124 in the left-right direction.
As shown in fig. 7, 8 and 14, the first joint 121 includes a connecting portion 121a and a pivot portion 121c, the connecting portion 121a is fixedly connected to the folding section 11 corresponding to the first joint 121, the pivot portion 121c is connected to the front end of the connecting portion 121a, the latch tab 121b is located on the upper side of the pivot portion 121c, so that a latch core 123 avoiding groove 121d is formed between the latch tab 121b and the pivot portion 121c, and the height of the latch core 123 avoiding groove 121d in the up-down direction is greater than the height of the latch core 123 in the up-down direction. Therefore, the movement of the lock cylinder 123 can be reset, for example, when two adjacent folding sections 11 rotate to a collinear state, the lock tongue 121b collides with the lock cylinder 123 to enable the lock cylinder 123 to move downwards, and resets under the action of the elastic piece when moving downwards to a certain distance, the lock tongue 121b is matched with the lock cylinder 123, the lock cylinder 123 is located in the lock cylinder 123 avoiding groove 121d, and the self-locking mechanism 12 locks the rotation between the two folding sections 11. Here, the first elastic member 127a and the second elastic member 127b are both springs.
As shown in fig. 7, 8 and 14, the key cylinder 123 has a rectangular parallelepiped shape, and an inclined groove 123a is formed at an upper end of the key cylinder 123. Due to the arrangement of the inclined groove 123a, when the lock tongue 121b collides with the lock cylinder 123, the lock cylinder 123 moves downwards, and the lock cylinder 123 is prevented from being moved and clamped.
As shown in fig. 7, 8 and 14, the lock cylinder 123 is provided with anti-slip threads 123d on both left and right side surfaces. The anti-slip threads 123d are arranged, so that the self-locking mechanism 12 can be unlocked conveniently, and when the self-locking mechanism needs to be unlocked, the self-locking mechanism 12 can be unlocked by pulling the lock cylinder 123 to move downwards.
As shown in fig. 7, 8 and 14, the latch 121b is hook-shaped. The hook-shaped latch bolt 121b can ensure that the locking of the self-locking mechanism 12 is more reliable and stable when the latch bolt 121b is matched with the lock cylinder 123.
As shown in fig. 1-2, the escape ladder 100 further includes a telescopic bar 2. The length of the telescopic rod 2 is changeable, the first end of the telescopic rod 2 is rotatably connected with the fixed rod 1, and each pedal 3 is rotatably connected with the second ends of the fixed rod 1 and the telescopic rod 2 respectively. It should be noted that the length of the telescopic rod 2 refers to the distance between the first end of the telescopic rod 2 and the second end of the telescopic rod 2. Change length, the rotation between telescopic link 2 and the footboard 3 is connected, the rotation between footboard 3 and the dead lever 1 is connected and the rotation between dead lever 1 and telescopic link 2 is connected, can reduce emergency ladder 100's thickness to when making emergency ladder 100 place in rail vehicle 200, the space that the significantly reduced occupied, and alleviate the negative effects who looks the sense in the car.
As shown in fig. 1-2, in some embodiments, the fixing rod 1, the telescopic rod 2 and the pedal 3 can be rotated to a state that the three are facing each other, and at this time, the projection of the rotation axis of the pedal 3 rotatably connected with the telescopic rod 2 on the longitudinal vertical plane (i.e. the yOz plane in the drawings) is coincident with the projection of the fixing rod 1 on the longitudinal vertical plane, and the thickness of the escape ladder 100 is reduced to a minimum value. It should be noted that the rotation axis of the pedal 3 and the telescopic rod 2 is a straight line around which the pedal 3 and the telescopic rod 2 rotate relatively, i.e. an imaginary straight line, and does not represent a specific component of the escape ladder 100.
When the escape ladder 100 is required to be used, the escape ladder 100 is unfolded into a ladder shape by the rotation of the telescopic rods 2 and the pedals 3, that is, the escape ladder 100 is switched to a state in which a person can walk, so that the person can leave from the rail vehicle 200 when an emergency occurs, and the rail vehicle 200 has more reliable safety. When the escape ladder 100 is not needed to be used, the telescopic rod 2 and the pedals 3 are rotated, so that the fixed rod 1, the telescopic rod 2 and the pedals 3 are rotated to be in a state that the fixed rod, the telescopic rod 2 and the pedals 3 are opposite to each other, namely, the thickness of the escape ladder 100 is reduced to the minimum as far as possible, and when the escape ladder 100 is placed in the rail vehicle 200, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
As shown in fig. 1 and 3, in some embodiments, the telescopic rod 2 comprises a first link 21 and a second link 22. The first end of the first connecting rod 21 is the first end of the telescopic rod 2 and is rotatably connected with the fixed rod 1. The second end of the first link 21 is pivotally connected to the first end of the second link 22. The second end of the second connecting rod 2 is the second end of the telescopic rod 2 and is rotatably connected with the pedal 3. The distance between the first end of the first link 21 and the second end of the second link 22 is the length of the telescopic bar 2. The telescopic rod 2 realizes length expansion through a two-rod structure, and is combined with the fixed rod 1 and the pedal 3 to form a four-rod mechanism, so that the rotation among the fixed rod 1, the telescopic rod 2 and the pedal 3 is simpler and more reliable.
As shown in fig. 1, 3 and 6, in some embodiments, the first link 21 and the second link 22 can be rotated to be collinear. When the first connecting rod 21 and the second connecting rod 22 rotate to the collinear state, a four-bar structure formed among the fixing rod 1, the first connecting rod 21, the second connecting rod 22 and the pedal 3 has a dead point, namely, the dead point has a limiting effect on the rotation of the pedal 3, so that the escape ladder 100 can be more stably used for people to walk.
In other embodiments, the telescopic rod 2 is a straight rod and is formed by connecting a plurality of straight rod sections, and two adjacent straight rod sections are in sliding fit with each other. In other embodiments, the telescopic rod 2 is a hydraulic telescopic rod.
As shown in fig. 1-2, in some embodiments, the number of the fixing rods 1 is two, and one fixing rod 1 is located at one side of the width direction of the pedal 3, and the other fixing rod 1 is located at the other side of the width direction of the pedal 3. The width direction of the pedal 3 is the x-axis direction, i.e., the left-right direction. Both sides of the width direction of the pedal 3 are connected with the fixing rods 1, so that the structure of the escape ladder 100 is more stable.
As shown in fig. 1-2, in some embodiments, the telescopic rods 2 are provided in plurality and in pairs. Each pair of telescopic rods 2 corresponds to one pedal 3. One of each pair of telescopic bars 2 is located at one side of the width direction of the corresponding pedal 3, and the other of each pair of telescopic bars 2 is located at the other side of the width direction of the corresponding pedal 3. Both sides of the width direction of the pedal 3 are connected with the telescopic rods 2, so that the escape ladder 100 is more stable in structure.
As shown in fig. 1 and 3, in some embodiments, the escape ladder 100 further includes a linkage 4. The linkage 4 is rotatably connected to at least two pedals 3. The pedals 3 are connected together through the linkage 4, namely, the linkage among the pedals 3 is realized, so that the escape ladder 100 can be switched between the use state and the non-use state rapidly.
As shown in fig. 1 and 6, in some embodiments, the linkage 4 is disposed parallel to the fixing rod 1. The link 4 disposed in parallel with the fixing lever 1 allows the escape ladder 100 to be further reduced in size. In other embodiments, the linkage 4 and the fixation rod 1 may not be parallel.
As shown in fig. 2 and 4, in some embodiments, the fixing rod 1, the telescopic rod 2, the pedal 3 and the linkage 4 can be rotated to a state of facing four, and at this time, the projection of the rotating shaft rotationally connected with the pedal 3 and the telescopic rod 2 on the longitudinal vertical plane (i.e. the yOz plane in the drawings) and the projection of the rotating shaft rotationally connected with the pedal 3 and the linkage 4 on the longitudinal vertical plane are both coincident with the projection of the fixing rod 1 on the longitudinal vertical plane. It should be noted that the rotation axis of the pedal 3 and the linkage 4 is a straight line around which the pedal 3 and the linkage 4 rotate relatively, i.e. an imaginary straight line, and does not represent a specific part of the escape ladder 100. When the escape ladder 100 is not needed to be used, the fixing rod 1, the telescopic rod 2, the pedals 3 and the linkage piece 4 are rotated to be in a right-facing state by rotating the telescopic rod 2, the linkage piece 4 and the pedals 3, namely, the thickness of the escape ladder 100 is reduced to the minimum as much as possible, so that when the escape ladder 100 is placed in the rail vehicle 200, the occupied space is greatly reduced, and the negative influence on the appearance in the vehicle is reduced.
As shown in fig. 1, in some embodiments, the linkages 4 are at least two and are arranged in pairs. Each pair of linkage members 4 corresponds to a plurality of pedals 3. One of each pair of the link members 4 is located on one side in the width direction of the corresponding plurality of steps 3, and the other of each pair of the link members 4 is located on the other side in the width direction of the corresponding plurality of steps 3. Both sides of the width direction of the pedal 3 are connected with the linkage members 4, so that the structure of the escape ladder 100 is more stable.
As shown in fig. 1 and 5, in some embodiments, the escape ladder 100 further includes a connecting curved bar 5. A first end of the connecting curved bar 5 is connected with the fixing bar 1, and a second end of the connecting curved bar 5 is adapted to be connected with the rail vehicle 200. The fixing rod 1 is provided on the rail vehicle 200 through the connecting curved rod 5, has a simple structure, and facilitates the escape ladder 100 to be switched between a use state and a non-use state.
As shown in fig. 1 and 5, in some embodiments, the first end of the connecting curved bar 5 is rotatably connected with the fixing bar 1. When the escape ladder 100 is not needed to be used, the fixed rod 1 and the connecting curved rod 5 are folded by rotating the connecting curved rod 5 and the fixed rod 1, so that the length of the escape ladder 100 is greatly reduced, the occupied space is greatly reduced when the escape ladder 100 is placed in a rail vehicle 200, and the negative influence on the appearance in the vehicle is reduced.
As shown in fig. 5, in some embodiments, the first end of the connecting curved bar 5 is rotatably connected to the fixing bar 1 by a self-locking mechanism 12. When the first end of the connecting curved rod 5 and the fixed rod 1 rotate to the designated position, the self-locking mechanism 12 locks the rotation between the first end of the connecting curved rod 5 and the fixed rod 1; so that a designated position of the rotation lock between the first end of the connecting curved lever 5 and the fixing lever 1 is determined according to the structure of the junction between the connecting curved lever 5 and the fixing lever 1. The self-locking mechanism 12 is used for locking and connecting the curved rod 5 and the fixing rod 1, so that the shape of the escape ladder 100 can be fixed when the escape ladder 100 is required to be used, and the escape ladder 100 can be used for people to walk more stably.
As shown in fig. 1 and 13, in some embodiments, the second end of the connecting curved rod 5 is provided with a limiting member 51 adapted to cooperate with a limiting portion 52 of the rail vehicle 200. Through the cooperation of the limiting part 51 of the connecting curved bar 5 and the limiting part 52 of the rail vehicle 200, when the escape ladder 100 is required to be used, the upper end of the escape ladder 100 can be fixed on the rail vehicle 200, so that the escape ladder 100 can be more stably used for people to walk, and the occurrence of shaking is avoided.
As shown in fig. 1 and 13, in some embodiments, the position-limiting member 51 is a position-limiting pin, and the position-limiting portion 52 is a position-limiting slot or a position-limiting hole. In some embodiments, the spacing portion 52 is disposed on a floor plane 214 of the rail vehicle 200. The matching structure of the limiting pin and the limiting groove or the limiting hole is simple and reliable.
As shown in fig. 1 and 13, in some embodiments, the connecting curved rod 5 includes a diagonal rod 5a and a flat rod 5b. One end of the diagonal rod 5a is connected with the fixed rod 1, one end of the flat rod 5b is adapted to be connected with the rail vehicle 200, and the other end of the diagonal rod 5a is fixedly connected with the other end of the flat rod 5b. When the escape ladder 100 is needed, the flat bar section 5b is engaged with the floor plane 214 of the rail vehicle 200, and the inclined bar section 5a is extended onto the rail beam 300 in line with the fixing bar 1 and inclined downward for transferring the persons from the rail vehicle 200 to the rail beam 300.
As shown in fig. 12, in some embodiments, the escape ladder 100 further includes a tension member 6. One end of the tension member 6 is connected to the fixing rod 1. The tension member 6 is adapted to pull the fixing bar 1, thereby adjusting the position of the escape ladder 100.
As shown in fig. 12, in some embodiments, the other end of the tension member 6 is a free end for a person to manually pull the fixing rod 1, thereby adjusting the position of the escape ladder 100; in some embodiments, the tensile member 6 is a flexible drawstring. In other embodiments, the other end of the tension member 6 may be coupled to the rail vehicle 100, with the movement of the tension member 6 being controlled by a control system.
As shown in fig. 9 and 12, when the escape ladder 100 is not required to be used, the escape door 210 is closed by the escape door cover 211, and the escape ladder 100 is placed in the rail vehicle 200 behind the escape door cover 211. In some embodiments, the lower end of the escape ladder 100 is fixed to the rail vehicle 200 by a lower fixing base 212, and the middle or upper end of the escape ladder 100 is fixed to the rail vehicle 200 by an upper fixing base 213. When the escape ladder 100 needs to be used, the escape door 210 is opened by the escape door cover 211, the upper fixing seat 213 and the lower fixing seat 212 are released from fixing the escape ladder 100, the escape ladder 100 is taken out, the escape ladder 100 is lapped between the rail vehicle 200 and the rail beam 300, so that people can be transferred from the rail vehicle 200 to the rail beam 300 through the escape ladder 100 and then leave the rail beam 300, and escape is completed.
As shown in fig. 10, in some embodiments, the upper fixture 213 includes a rotating arm 2131 and a retaining clip 2132. One end of the rotating arm 2131 is rotatably connected to the rail vehicle 200, and the other end is connected to the fixing clip 2132. The opening degree of the fixing clip 2132 is adjustable. The fixing and releasing of the upper fixing base 213 to the middle or upper end of the escape ladder 100 can be accomplished by the rotation of the rotating arm 2131 and the opening adjustment of the fixing clip 2132.
As shown in fig. 11, in some embodiments, the lower fixing base 212 includes a position-limiting structure, and the lower end of the escape ladder 100 is clamped on the position-limiting structure of the lower fixing base 212 to complete the fixing. When it is desired to use the escape ladder 100, the lower fixing base 212 may be removed from the rail vehicle so as not to hinder escape of a person.
As shown in fig. 9 and 12, in some embodiments, the escape door 210 and the escape ladder 100 are both one. The escape door 210 is disposed at one of the two ends of the rail vehicle 200, that is, the escape door 210 is disposed at the head or tail of the rail vehicle 200, and the escape door 100 is correspondingly disposed. Through set up emergency exits 210 and emergency ladder 100 at rail vehicle 200's locomotive or the rear of a vehicle for personnel can accomplish to flee from directly shifting to the track roof beam 300 on track vehicle 200, need not to set up escape way in addition beside track roof beam 300, make track roof beam 300 volume littleer, guaranteed the good landscape nature of urban environment.
In other embodiments, there are two escape doors 210 and escape ladder 100. An escape door 210 is provided at one of both ends of the rail vehicle 200, and an escape ladder 100 is correspondingly provided; the other escape door 210 is disposed at the other end of the two ends of the rail vehicle 200, and is correspondingly provided with the other escape ladder 100; that is, the head and the tail of the rail vehicle 200 are provided with the escape doors 210 and the corresponding escape ladders 100 so that the persons can escape from both ends of the rail vehicle 200.
As shown in fig. 12, in some embodiments, the track beam 300 is provided with an escape passage 310, and the escape ladder 100 of the rail vehicle 200 is adapted to be disposed between the escape passage 310 of the track beam 300 and the escape door 310 of the rail vehicle 200, so that a person can be transferred from the rail vehicle 200 to the track beam 300 to complete the escape. In some embodiments, the concave portion is formed in the middle of the track beam 300 to form the escape passage 310, so that people can directly transfer from the rail vehicle 200 to the escape passage on the track beam 300 to complete escape, and the escape passage does not need to be additionally built beside the track beam 300, so that the track beam 300 is smaller in size, and good landscapes of urban environments are ensured.
Other constructions and operations of the escape ladder 100, the rail vehicle 200 and the rail transit system 1000 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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.
Claims (18)
1. An escape ladder for a rail vehicle, comprising:
the fixing rod comprises a plurality of folding sections, two adjacent folding sections are rotatably connected through a self-locking mechanism, the self-locking mechanism comprises a first joint and a second joint rotatably connected to the first joint, the first joint is fixedly connected with one of the two adjacent folding sections, the second joint is fixedly connected with the other of the two adjacent folding sections, a lock tongue is arranged on the first joint, a vertically movable lock cylinder is arranged on the second joint, when the two adjacent folding sections rotate to be in a collinear state, the lock tongue is matched with the lock cylinder, and the self-locking mechanism locks the rotation between the two folding sections;
a plurality of pedals, each of which is arranged on the fixing rod;
the second joint is provided with an accommodating groove, and the accommodating groove is used for installing the lock cylinder, so that the lock cylinder vertically moves in the accommodating groove;
the second joint comprises a body, a left branch and a right branch which are oppositely arranged at the rear end of the body at intervals, the body is fixedly connected with the folding section corresponding to the second joint, and the accommodating groove is formed between the left branch and the right branch;
the left branch is provided with a first sliding groove, the right branch is provided with a second sliding groove, the first sliding groove and the second sliding groove are oppositely arranged, the left end of the lock cylinder is positioned in the first sliding groove, and the right end of the lock cylinder is positioned in the second sliding groove;
a first elastic piece is arranged between the bottom surface of the left end of the lock cylinder and the bottom wall of the first sliding groove, and a second elastic piece is arranged between the bottom surface of the right end of the lock cylinder and the bottom wall of the second sliding groove;
the first joint comprises a connecting part and a pivoting part, the connecting part is fixedly connected with the folding section corresponding to the first joint, the pivoting part is connected with the front end of the connecting part, the spring bolt is positioned on the upper side of the pivoting part, so that a lock cylinder avoiding groove is formed between the spring bolt and the pivoting part, and an inclined groove is formed at the upper end of the lock cylinder;
it is adjacent two folding section rotates to collinear in-process, the spring bolt is contradicted the chute so that the lock core moves down, and when adjacent two folding section collineation, the lock core passes through first elastic component with the second elastic component resets and is located the lock core dodges the inslot.
2. The escape ladder of claim 1 wherein the first chute has a first guide post disposed therein, the second chute has a second guide post disposed therein, the left end of the lock cylinder is slidably mounted on the first guide post, and the right end of the lock cylinder is slidably mounted on the second guide post.
3. The escape ladder according to claim 2, wherein a first through hole is formed at the left end of the lock cylinder, a second through hole is formed at the right end of the lock cylinder, the first through hole is matched with the first guide post, and the second through hole is matched with the second guide post.
4. The escape ladder according to claim 2, wherein the first sliding groove penetrates the left leg, the second sliding groove penetrates the right leg, and the first sliding groove and the second sliding groove are both elongated holes extending in the up-down direction, in the left-right direction; the lower end of the first guide post is fixed on the bottom wall of the first sliding chute, and the upper end of the first guide post is fixed on the upper wall of the first sliding chute; the lower end of the second guide post is fixed on the bottom wall of the second sliding groove, and the upper end of the second guide post is fixed on the upper wall of the second sliding groove.
5. The escape ladder of claim 4, wherein the left leg is provided with a first step hole extending from an upper surface of the left leg to an upper wall of the first chute for fixing an upper end of the first guide post; and a second stepped hole is formed in the right support, extends from the upper surface of the right support to the upper wall of the second sliding groove and is used for fixing the upper end of the second guide post.
6. The escape ladder of claim 5, wherein the upper end of the first guide post and the upper end of the second guide post are fixed into the first ladder hole and the second ladder hole, respectively, by set screws.
7. The escape ladder of claim 2, wherein the first resilient member is sleeved on the first guide post; the second elastic piece is sleeved on the second guide column.
8. The escape ladder of claim 7, wherein a third stepped hole is provided on a bottom wall of the first chute for positioning a bottom of the first guide post and a bottom of the first elastic member; and a fourth stepped hole is formed in the bottom wall of the second sliding groove and used for positioning the bottom of the second guide column and the bottom of the second elastic piece.
9. The escape ladder of claim 7, wherein the bottom surface of the left end of the lock cylinder is provided with a fifth stepped hole for positioning the upper portion of the first guide post and the upper portion of the first elastic member; and a sixth stepped hole is formed in the bottom surface of the right end of the lock cylinder and used for positioning the upper part of the second guide column and the upper part of the second elastic piece.
10. The ladder of claim 7, wherein the first and second elastic members are each a spring.
11. The emergency ladder according to claim 1, wherein the self-locking mechanism further comprises a pin, a third through hole, a fourth through hole and a fifth through hole are sequentially formed in the left support, the right support and the first joint, and the first joint is clamped and arranged on the second joint by the left support and the right support, so that the third through hole, the fourth through hole and the fifth through hole are sequentially aligned to penetrate through the pin.
12. The escape ladder according to claim 11, wherein the left end of the pin protrudes out of the left side surface of the left leg, the right end of the pin protrudes out of the right side surface of the right leg, and both the left end and the right end of the pin are provided with elastic collars.
13. An escape ladder according to any one of claims 1-3, wherein the lock cylinder is cuboid.
14. The escape ladder of claim 13, wherein the lock core is provided with anti-slip threads on both left and right sides thereof.
15. The ladder as claimed in claim 1, wherein the locking tongue is hook-shaped.
16. A rail vehicle, comprising an escape door and an escape ladder according to any of claims 1-15, the escape ladder being arranged on the escape door.
17. The rail vehicle of claim 16, wherein:
the escape door and the escape ladder are both one; the escape door is arranged at one of the two ends of the railway vehicle, and the escape ladder is correspondingly arranged;
or the escape door and the escape ladder are two; the escape door is arranged at one of two ends of the railway vehicle, and the escape ladder is correspondingly arranged; the other escape door is arranged at the other end of the two ends of the railway vehicle, and the other escape ladder is correspondingly arranged.
18. A rail transit system comprising a rail beam and a rail vehicle according to claim 16 or 17; the rail vehicle is adapted to travel on the rail beam;
the track beam is provided with an escape passage; the escape ladder of the railway vehicle is suitable for being arranged between the escape passage of the track beam and the escape door of the railway vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230271.9A CN111746572B (en) | 2019-03-26 | 2019-03-26 | Escape ladder, rail vehicle and rail transit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230271.9A CN111746572B (en) | 2019-03-26 | 2019-03-26 | Escape ladder, rail vehicle and rail transit system |
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| CN111746572A CN111746572A (en) | 2020-10-09 |
| CN111746572B true CN111746572B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201255161Y (en) * | 2008-06-26 | 2009-06-10 | 张建元 | Folding joint with locking structure |
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| CN207813482U (en) * | 2017-12-12 | 2018-09-04 | 比亚迪股份有限公司 | Emergency Ladder, vehicle-mounted escape device and vehicle |
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| CN201321813Y (en) * | 2008-12-31 | 2009-10-07 | 天津凯德实业有限公司 | Foldable mounting ladder of turbocharged vehicle |
| CN106761362B (en) * | 2017-01-19 | 2017-10-31 | 黄河科技学院 | A kind of high-building construction multifunctional safe tight folded hanging ladder |
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|---|---|---|---|---|
| US4540306A (en) * | 1983-10-19 | 1985-09-10 | Wang Chien Yuan | Positioning joint for folding ladders |
| CN2062377U (en) * | 1990-01-17 | 1990-09-19 | 盛景源 | Locating device for multi-stairs |
| CN201255161Y (en) * | 2008-06-26 | 2009-06-10 | 张建元 | Folding joint with locking structure |
| CN201553258U (en) * | 2009-09-07 | 2010-08-18 | 欧黎傲 | Folding scooter |
| CN107757640A (en) * | 2017-10-20 | 2018-03-06 | 中车长春轨道客车股份有限公司 | A kind of collapsible escape ladder |
| CN207813482U (en) * | 2017-12-12 | 2018-09-04 | 比亚迪股份有限公司 | Emergency Ladder, vehicle-mounted escape device and vehicle |
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| Publication number | Publication date |
|---|---|
| CN111746572A (en) | 2020-10-09 |
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