CN212353977U

CN212353977U - Escape ramp device of subway locomotive

Info

Publication number: CN212353977U
Application number: CN202020624098.9U
Authority: CN
Inventors: 周志文; 黄珍丽; 费腾; 陈佳
Original assignee: Changzhou Changqing Technology Co Ltd
Current assignee: Changzhou Changqing Technology Co Ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-01-15
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a subway locomotive's ramp device of fleing, its main points are: includes a pedal frame assembly and a pedal. The pedal frame components are divided into two groups, the two groups of pedal frame components are respectively called a left pedal frame component and a right pedal frame component according to the left position and the right position of the pedal frame components, and the pedals are arranged in the pedal frame components and can be unfolded or folded. The utility model discloses a ramp device of fleing simple structure adopts the utility model discloses a behind the ramp device of fleing, subway locomotive's escape device's escape door can adopt the mode of upwards opening, therefore can set up the window on the escape door, has promoted its field of vision greatly, and the adaptation reliability further improves.

Description

Escape ramp device of subway locomotive

Technical Field

The utility model relates to a subway locomotive technical field specifically is a subway locomotive's ramp device of fleing.

Background

When a user goes out by taking a subway, sudden emergencies such as power failure and fire disasters can be met. When this occurs, the doors for boarding and alighting are often disabled from opening due to a power outage. Therefore, the corresponding manually opened escape doors are arranged on the subway locomotive for escaping. At present, the escape devices in the market are all arranged at the head of a locomotive and are generally provided with an up-lifting escape door and a down-turning escape door. The downward-turning escape door is also used as an escape ramp, and the upward-turning escape door usually comprises an escape door and a corresponding escape ramp, wherein the escape door is opened upwards and the escape ramp is opened downwards during use. Chinese patent document CN105172815B (patent application No. 201510582619.2) discloses a "universal escape system for subway locomotives", which also employs an escape door that is turned downward to open. The escape door capable of being turned forwards needs to bear the action of the pedal, so that a window cannot be arranged on the escape door, the view field of the locomotive head is greatly influenced in a closed state, and whether an object is shielded in the front of the escape door cannot be judged when the escape door needs to be opened, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure for lift formula escape device's escape ramp device of subway locomotive on.

Realize the utility model discloses the basic technical scheme of purpose is: an escape ramp device of a subway locomotive is structurally characterized in that: includes a pedal frame assembly and a pedal. The pedal frame components are divided into two groups, and the two groups of pedal frame components are respectively called a left pedal frame component and a right pedal frame component according to the left position and the right position of the pedal frame components.

The left pedal frame assembly comprises a left first support rod, a left second support rod, a left first buffer device and a left pull rod. The articulated fixed connection of the one end of the first bracing piece in left side is on the lower part left side of installation door frame, and the other end is articulated fixed connection with left side second bracing piece, is 180 degrees after left side first bracing piece and left side second bracing piece expand, and left side second bracing piece upturns and opens. The first buffer device on the left side adopts a stretching cylinder, one end of the stretching cylinder is hinged to the left side of the installation door frame, and the other end of the stretching cylinder is hinged to the first support rod on the left side. The left side pull rod comprises two connecting rods which are hinged together, one end of the left side pull rod is hinged to the installation door frame, and the other end of the left side pull rod is hinged to the hinged position of the left side first supporting rod and the left side second supporting rod.

The right pedal frame assembly comprises a right first support rod, a right second support rod, a right first buffer device and a right pull rod. The articulated fixed connection of the one end of the first bracing piece in right side is on the lower part right side of installation door frame, and the other end is articulated fixed connection with right side second bracing piece, is 180 degrees after right side first bracing piece and right side second bracing piece expand, and right side second bracing piece upwards overturns and opens. The first buffer device on the right side adopts a stretching cylinder, one end of the stretching cylinder is hinged to the right side of the installation door frame, and the other end of the stretching cylinder is hinged to the first support rod on the right side. The right side pull rod comprises two connecting rods which are hinged together, one end of the right side pull rod is hinged to the installation door frame, and the other end of the right side pull rod is hinged to the hinged position of the right side first supporting rod and the right side second supporting rod.

The pedals are 4, and the 4 pedals are called a first pedal, a second pedal, a third pedal and a fourth pedal from front to back. The first pedal is fixedly arranged between the front part of the left second supporting rod and the front part of the right second supporting rod of the pedal frame assembly. The front part of the second pedal is rotatably arranged between the left second supporting rod and the right second supporting rod and is positioned behind the first pedal. The rear part of the second pedal is hinged with the third pedal, and the rear part of the third pedal is rotatably arranged between the left first supporting rod and the right first supporting rod and is positioned in front of the fourth pedal. And a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal and the left side and the right side of the front part of the lower side of the third pedal, and the stretching cylinders play a role in buffering and stretching when the second pedal and the third pedal are unfolded. The fourth pedal is fixedly arranged between the rear part of the left first supporting rod and the rear part of the right first supporting rod of the pedal frame assembly.

The technical scheme based on the basic technical scheme is as follows: the escape ramp component further comprises two groups of opening devices, and the two groups of opening devices are identical in structure and comprise compression springs and supporting platforms. The two groups of opening devices are respectively and fixedly connected on the left side and the right side of the lower part of the installation door frame by respective compression springs. The supporting platform is fixedly arranged at the upper end of the compression spring, and the compression spring is vertically arranged along the vertical direction. The rear end of the first support rod on the left side is provided with a guide roller, and the rotation axis of the guide roller is parallel to the hinge axis of the first support rod on the left side and the hinge axis of the installation door frame. When the first left supporting rod and the second left supporting rod are folded, the guide roller at the rear end of the first left supporting rod is pressed on the supporting platform of the opening device on the left side from the upper part to the lower part, so that the compression spring is in a compressed state. The rear end of the first support rod on the right side is provided with a guide roller, and the rotation axis of the guide roller is parallel to the hinge axis of the first support rod on the right side and the hinge axis of the installation door frame. When the first right supporting rod and the second right supporting rod are folded, the guide roller at the rear end of the first right supporting rod is pressed on the supporting platform of the opening device on the right side from the upper part downwards, so that the compression spring is in a compression state.

The technical scheme based on the corresponding technical schemes is as follows: the pedal locking device is further included. The pedal locking device comprises a pedal locking pin, a U-shaped limiting clamp torsion spring, an unlocking wrench and a wrench torsion spring. The pedal locking pin is fixedly arranged on the rear part of the inner side of the second support rod on the right side of the pedal frame, extends to the lower part of the second pedal towards the inside of the frame, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded. The U-shaped limiting clamp is rotatably arranged on the second pedal from one end of the U-shaped connecting part, and the U-shaped limiting clamp torsion spring is used for keeping the opening of the U-shaped limiting clamp in a state of being parallel to the second supporting rod on the right side. The lower side of the U-shaped connecting part of the U-shaped limiting clamp is provided with a bayonet. The unlocking wrench is rotatably arranged on the second pedal, and the lower part of the unlocking wrench extends downwards out of the second pedal. The upper portion of unblock spanner is equipped with spacing lug, and spacing lug stretches into in the bayonet socket of the spacing card of U-shaped for prevent the opening of the spacing card of U-shaped to open downwards, and the spanner torsional spring is used for making the spacing lug of unblock spanner keep in the bayonet socket.

The utility model discloses following beneficial effect has: (1) the utility model discloses a ramp device of fleing simple structure adopts the utility model discloses a behind the ramp device of fleing, subway locomotive's escape device's escape door can adopt the mode of upwards opening, therefore can set up the window on the escape door, has promoted its field of vision greatly, and the adaptation reliability further improves. (2) The utility model discloses a ramp device of fleing is equipped with buffer, and is more steady when the ramp expandes, is difficult for causing the damage. (3) The utility model discloses an escape device's of subway locomotive ramp device of fleing is equipped with the pull rod, has improved the bearing capacity of ramp. (4) The utility model discloses a subway locomotive's escape device's escape ramp device's first footboard and fourth footboard all adopt fixed mounting's mode, are locked by footboard locking device after second footboard and the expansion of third footboard, have ensured the level and smooth and stability of ramp, and the safety in utilization improves greatly.

Drawings

Fig. 1 is a schematic structural view of an escape device of a subway locomotive using the escape ramp device of the present invention.

Fig. 2 is a perspective view of the escape device of the subway locomotive of fig. 1 in a deployed use state.

Fig. 3 is a schematic view as viewed from the left rear of fig. 2.

Fig. 4 is a schematic view of the structure of the installation door frame as viewed from the front.

Fig. 5 is a schematic structural view illustrating the unfolding of the escape ramp device and the installation of a door frame.

FIG. 6 is a schematic view of the structure of the step of the ramp assembly.

Fig. 7 is a schematic view of the structure of the pedal frame assembly of the ramp assembly.

Fig. 8 is a schematic structural view of the pedal lock device.

The reference numbers in the drawings are:

an escape door 1, a transparent window 1-1, a door frame 4,

an escape ramp component 6, a guy cable 6a, a winding shaft 6b, a left safety protection belt 6-c1, a right safety protection belt 6-c2,

a pedal frame component 6-1, a left pedal frame component 6-11, a left first support rod 6-11-1, a left second support rod 6-11-2, a left first buffer device 6-11-3, a left pull rod 6-11-4,

a right pedal frame component 6-12, a right first support rod 6-12-1, a right second support rod 6-12-2, a right first buffer device 6-12-3, a right pull rod 6-12-4,

a pedal 6-2, a first pedal 6-21, a second pedal 6-22, a third pedal 6-23, a fourth pedal 6-24,

an opening device 6-3, a compression spring 6-31, a support platform 6-32,

the device comprises a pedal locking device 7, a pedal locking pin 7-1, a U-shaped limiting clamp 7-2, a U-shaped limiting clamp torsion spring 7-3, an unlocking wrench 7-4 and a wrench torsion spring 7-5.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. The description of the orientation of the present invention is performed according to the orientation shown in fig. 1, that is, the up-down and left-right directions shown in fig. 1 are the up-down and left-right directions of the description, the side facing the direction of fig. 1 is the rear side (i.e., the inside of the car), and the side facing away from the direction of fig. 1 is the front side (i.e., the direction of opening the door).

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used only for convenience in describing the present invention or simplifying the description, but do not indicate that a particular orientation must be provided.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

(example 1)

Referring to fig. 1 to 8, the inventive escape ramp device for a subway locomotive includes an escape ramp assembly 6 and a pedal locking device 7.

Referring to fig. 1 to 8, a transparent window 1-1 is provided on the upper part of the escape door 1 of the escape device using the ramp device of the present invention. The upper part of the escape door 1 is hinged and connected with a door opening of a subway locomotive. The installation door frame 4 is fixedly arranged in a door opening of the subway locomotive. The left side and the right side of the escape door 1 are provided with air springs, one end of each air spring is hinged to the escape door 1, the other end of each air spring is hinged to the corresponding position of the installation door frame 4, and the air springs are used for keeping the escape door 1 in a turnover opening state. One end of the escape ramp component 6 is hinged to the lower end of the installation door frame 4, the other end of the escape ramp component 6 is provided with a pull rope 6a, and the other end of the pull rope 6a is fixedly arranged on a winding shaft 6 b.

Referring to fig. 1 to 8, the escape ramp assembly 6 includes a pedal frame assembly 6-1, a pedal 6-2, and an opening device 6-3. Two groups of opening devices 6-3 are provided, and the two groups of opening devices 6-3 have the same structure and respectively comprise a compression spring 6-31 and a supporting platform 6-32. Two sets of opening devices 6-3 are fixedly connected to the left and right sides of the lower portion of the installation doorframe 4 by respective compression springs 6-31. The supporting platform 6-31 is fixedly arranged at the upper end of the compression spring 6-31, and the compression spring 6-31 is vertically arranged along the up-down direction.

The pedal frame components 6-1 are divided into two groups, and the two groups of pedal frame components 6-1 are respectively called a left pedal frame component 6-11 and a right pedal frame component 6-12 according to the left and right positions of the pedal frame components.

The left pedal frame assembly 6-11 comprises a left first support rod 6-11-1, a left second support rod 6-11-2, a left first buffer device 6-11-3 and a left pull rod 6-11-4.

One end of the left first supporting rod 6-11-1 is hinged and fixedly connected to the left side of the lower part of the installation door frame 4, the other end of the left first supporting rod is hinged and fixedly connected with the left second supporting rod 6-11-2, the left first supporting rod 6-11-1 and the left second supporting rod 6-11-2 are unfolded to form an angle of 180 degrees, and the left second supporting rod 6-11-2 is turned upwards and opened. The left safety guard 6-c1 is provided on the left and left first support bar 6-11-1 and the left second support bar 6-11-2 of the installation doorframe 4.

The other end of the second support bar 6-11-2 on the left side is fixedly connected with a pull rope 6 a. The first left buffer device 6-11-3 adopts a stretching cylinder, one end of the stretching cylinder is hinged on the left side of the installation door frame 4, and the other end of the stretching cylinder is hinged on the first left support rod 6-11-1. The rear end of the left first supporting rod 6-11-1 is provided with a guide roller 6-11-11, and the rotation axis of the guide roller 6-11-11 is parallel to the hinge axis of the left first supporting rod 6-11-1 and the hinge axis of the installation door frame 4. When the first left support bar 6-11-1 and the second left support bar 6-11-2 are folded, the guide roller 6-11-11 at the rear end of the first left support bar 6-11-1 presses downward from above against the support platform 6-32 of the opening device 6-3 located on the left side, so that the compression spring 6-31 is in a compressed state. The left side pull rod 6-11-4 is composed of two connecting rods which are hinged together, one end of the left side pull rod 6-11-4 is hinged to the installation door frame 4, and the other end of the left side pull rod 6-11-4 is hinged to the hinged position of the left side first supporting rod 6-11-1 and the left side second supporting rod 6-11-2.

The right pedal frame assembly 6-12 comprises a right first support rod 6-12-1, a right second support rod 6-12-2, a right first buffer device 6-12-3 and a right pull rod 6-12-4.

One end of the right first supporting rod 6-12-1 is hinged and fixedly connected to the right side of the lower part of the door frame 4, the other end of the right first supporting rod is hinged and fixedly connected with the right second supporting rod 6-12-2, the right first supporting rod 6-12-1 and the right second supporting rod 6-12-2 are unfolded to form an angle of 180 degrees, and the right second supporting rod 6-12-2 is turned upwards and opened. The right safety guard 6-c2 is provided on the right side of the installation doorframe 4 and on the right first support bar 6-12-1 and the right second support bar 6-12-2.

The first right buffer device 6-12-3 adopts a stretching cylinder, one end of the stretching cylinder is hinged on the right side of the installation door frame 4, and the other end of the stretching cylinder is hinged on the first right support rod 6-12-1. The rear end of the right first supporting rod 6-12-1 is provided with a guide roller 6-12-11, and the rotation axis of the guide roller 6-12-11 is parallel to the hinge axis of the right first supporting rod 6-12-1 and the hinge axis of the installation door frame 4. When the right first supporting rod 6-12-1 and the right second supporting rod 6-12-2 are folded, the guide roller 6-12-11 at the rear end of the right first supporting rod 6-12-1 is pressed downwards from above onto the supporting platform 6-32 of the opening device 6-3 on the right side, so that the compression spring 6-31 is in a compressed state. The right side pull rod 6-12-4 is composed of two connecting rods which are hinged together, one end of the right side pull rod 6-12-4 is hinged to the installation door frame 4, and the other end is hinged to the hinged position of the right side first supporting rod 6-12-1 and the right side second supporting rod 6-12-2.

The pedal 6-2 has 4 pedals, and the 4 pedals 6-2 are called a first pedal 6-21, a second pedal 6-22, a third pedal 6-23 and a fourth pedal 6-24 from front to back.

The first pedal 6-21 is fixedly arranged between the front part of the left second support bar 6-11-2 and the front part of the right second support bar 6-12-2 of the pedal frame assembly 6-1.

The front part of the second pedal 6-22 is rotatably arranged between the left second support rod 6-11-2 and the right second support rod 6-12-2 and is positioned behind the first pedal 6-21. The rear part of the second pedal 6-22 is hinged with the third pedal 6-23, and the rear part of the third pedal 6-23 is rotatably arranged between the left first supporting rod 6-11-1 and the right first supporting rod 6-12-1 and is positioned in front of the fourth pedal 6-24. And a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal 6-22 and the left side and the right side of the front part of the lower side of the third pedal 6-23, and plays a role in buffering and stretching when the second pedal 6-22 and the third pedal 6-23 are unfolded.

The fourth pedal 6-24 is fixedly disposed between the rear portion of the left first support bar 6-11-1 and the rear portion of the right first support bar 6-12-1 of the pedal frame assembly 6-1.

Referring to fig. 7 and 8, the pedal locking device 7 includes a pedal locking pin 7-1, a U-shaped limit clip 7-2, a U-shaped limit clip torsion spring 7-3, an unlocking wrench 7-4, and a wrench torsion spring 7-5. The pedal locking pin 7-1 is fixedly arranged on the inner rear part of the right second supporting rod 6-12-2 of the pedal frame 6-1, extends towards the inside of the frame to be below the second pedal 6-22, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded. The U-shaped limit clamp 7-2 is rotatably arranged on the second pedal 6-22 from one end of the U-shaped connecting part thereof, and the U-shaped limit clamp torsion spring 7-3 is used for keeping the opening of the U-shaped limit clamp 7-2 in a state of being parallel to the right second supporting rod 6-12-2. The lower side of the U-shaped connecting part of the U-shaped limiting card 7-2 is provided with a bayonet 7-21. The unlocking wrench 7-4 is rotatably arranged on the second pedal 6-22, and the lower part of the unlocking wrench 7-4 extends downwards out of the second pedal 6-22. The upper part of the unlocking wrench 7-4 is provided with a limiting lug 7-41, the limiting lug 7-41 extends into the bayonet 7-21 of the U-shaped limiting card 7-2 and is used for preventing the opening of the U-shaped limiting card 7-2 from being opened downwards, and the wrench torsion spring 7-5 is used for keeping the limiting lug 7-41 of the unlocking wrench 7-4 in the bayonet 7-21. When the pedal locking device is used, when the second pedal 6-22 is unfolded, the U-shaped limiting clamp 7-2 contacts the pedal locking pin 7-1 on the second pedal 6-22 downwards, the opening part of the U-shaped limiting clamp 7-2 moves upwards, when the pedal locking pin 7-1 moves upwards to the opening part of the U-shaped limiting clamp 7-2, the opening part of the U-shaped limiting clamp 7-2 is reset downwards under the action of the U-shaped limiting clamp torsion spring 7-3, and the pedal locking pin 7-1 is fixed in the U-shaped limiting clamp 7-2 in a limiting way. When unlocking is needed, the unlocking wrench 7-4 is pulled, the limiting lug 7-41 of the unlocking wrench 7-4 is separated from the bayonet 7-21 of the U-shaped limiting card 7-2, the second pedal 6-22 is folded upwards, the pedal locking pin 7-1 drives the opening of the U-shaped limiting card 7-2 to be opened downwards, after the pedal locking pin 7-1 is separated from the U-shaped limiting card 7-2, the U-shaped limiting card 7-2 is reset upwards under the action of the U-shaped limiting card torsion spring 7-3, and then the unlocking wrench 7-4 is loosened.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An escape ramp device of a subway locomotive is characterized in that: comprises a pedal frame component and a pedal; the two groups of pedal frame components are respectively called as a left pedal frame component and a right pedal frame component according to the left and right positions of the pedal frame components;

the left pedal frame component comprises a left first support rod, a left second support rod, a left first buffer device and a left pull rod; one end of the left first supporting rod is hinged and fixedly connected to the left side of the lower part of the installation door frame, the other end of the left first supporting rod is hinged and fixedly connected with the left second supporting rod, the left first supporting rod and the left second supporting rod are unfolded to form an angle of 180 degrees, and the left second supporting rod is turned upwards and opened; the first left buffer device adopts a stretching cylinder, one end of the stretching cylinder is hinged to the left side of the installation door frame, and the other end of the stretching cylinder is hinged to a first left support rod; the left pull rod consists of two connecting rods which are hinged together, one end of the left pull rod is hinged to the installation door frame, and the other end of the left pull rod is hinged to the hinged position of the left first supporting rod and the left second supporting rod;

the right pedal frame component comprises a right first support rod, a right second support rod, a right first buffer device and a right pull rod; one end of the right first supporting rod is hinged and fixedly connected to the right side of the lower part of the installation door frame, the other end of the right first supporting rod is hinged and fixedly connected with the right second supporting rod, the right first supporting rod and the right second supporting rod are unfolded to form an angle of 180 degrees, and the right second supporting rod is turned upwards and opened; the first right buffer device adopts a stretching cylinder, one end of the stretching cylinder is hinged to the right side of the installation door frame, and the other end of the stretching cylinder is hinged to the first right support rod; the right pull rod consists of two connecting rods which are hinged together, one end of the right pull rod is hinged to the installation door frame, and the other end of the right pull rod is hinged to the hinged position of the right first supporting rod and the right second supporting rod;

the number of the pedals is 4, and the 4 pedals are called as a first pedal, a second pedal, a third pedal and a fourth pedal from front to back; the first pedal is fixedly arranged between the front part of the left second supporting rod and the front part of the right second supporting rod of the pedal frame assembly; the front part of the second pedal is rotatably arranged between the left second supporting rod and the right second supporting rod and is positioned behind the first pedal; the rear part of the second pedal is hinged with a third pedal, and the rear part of the third pedal is rotatably arranged between the left first support rod and the right first support rod and is positioned in front of the fourth pedal; a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal and the left side and the right side of the front part of the lower side of the third pedal, and the stretching cylinders play a role in buffering and stretching when the second pedal and the third pedal are unfolded; the fourth pedal is fixedly arranged between the rear part of the left first supporting rod and the rear part of the right first supporting rod of the pedal frame assembly.

2. An escape ramp device for a subway locomotive according to claim 1, wherein: the escape ramp component also comprises two groups of opening devices, and the two groups of opening devices have the same structure and respectively comprise a compression spring and a supporting platform; the two groups of opening devices are respectively and fixedly connected to the left side and the right side of the lower part of the installation door frame by respective compression springs; the supporting platform is fixedly arranged at the upper end of the compression spring, and the compression spring is vertically arranged along the vertical direction; the rear end of the left first supporting rod is provided with a guide roller, and the rotating axis of the guide roller is parallel to the hinging axis of the left first supporting rod and the mounting door frame; when the first left supporting rod and the second left supporting rod are folded, the guide roller at the rear end of the first left supporting rod is pressed on the supporting platform of the opening device positioned on the left side from the upper part to the lower part, so that the compression spring is in a compressed state; the rear end of the right first support rod is provided with a guide roller, and the rotating axis of the guide roller is parallel to the hinge axis of the right first support rod and the hinge axis of the installation door frame; when the first right supporting rod and the second right supporting rod are folded, the guide roller at the rear end of the first right supporting rod is pressed on the supporting platform of the opening device on the right side from the upper part downwards, so that the compression spring is in a compression state.

3. An escape ramp device for a subway locomotive according to claim 1 or 2, wherein: the pedal locking device is also included; the pedal locking device comprises a pedal locking pin, a U-shaped limiting clamp torsion spring, an unlocking wrench and a wrench torsion spring; the pedal locking pin is fixedly arranged on the rear part of the inner side of the second supporting rod on the right side of the pedal frame, extends towards the inside of the frame to be below the second pedal, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded; the U-shaped limiting clamp is rotatably arranged on the second pedal from one end of the U-shaped connecting part of the U-shaped limiting clamp, and the U-shaped limiting clamp torsion spring is used for keeping the opening of the U-shaped limiting clamp in a state of being parallel to the second supporting rod on the right side; a bayonet is arranged on the lower side of the U-shaped connecting part of the U-shaped limiting card; the unlocking wrench is rotatably arranged on the second pedal, and the lower part of the unlocking wrench extends downwards out of the second pedal; the upper portion of unblock spanner is equipped with spacing lug, and spacing lug stretches into in the bayonet socket of the spacing card of U-shaped for prevent the opening of the spacing card of U-shaped to open downwards, and the spanner torsional spring is used for making the spacing lug of unblock spanner keep in the bayonet socket.