Elevated line rail vehicle emergency escape ladder mounting structure and rail vehicle

Abstract

The invention discloses an elevated line rail vehicle emergency escape ladder installation structure and a rail vehicle. The elevated line rail vehicle emergency escape ladder installation structure comprises a vehicle door, an electrical screen cabinet is installed on one side of the vehicle door, a fixing support is arranged on the inner side of a cabinet door of the electrical screen cabinet, and an emergency escape ladder is hung on the fixing support; the emergency escape ladder comprises an emergency escape ladder body and a hook assembly, the hook assembly comprises a hook body capable of being clamped into the fixing support and the door sill, and the lower end of the hook body is provided with a positioning pin and sleeved with a connecting sleeve. A cavity is formed in the top of the emergency escape ladder body, a connecting sleeve is fixedly installed in the cavity, a sliding groove is formed in the connecting sleeve, the sliding groove is spirally and obliquely distributed downwards and is provided with an opening position located at the highest position of the sliding groove and a locking position located at the lower end of the sliding groove, and the tail end of the positioning pin is clamped into the sliding groove. The positioning pin slides along the sliding groove, when the positioning pin slides to the locking position of the sliding groove, the hook body of the hook assembly rotates to the locking state, and when the positioning pin slides to the opening position of the sliding groove, the hook body of the hook assembly rotates to the opening state.

Description

Technical Field

[0001] The invention relates to a life-saving ladder installation structure for an EMU and a maglev rail vehicle, and in particular to a life-saving ladder installation structure for an elevated line rail vehicle and a rail vehicle. Background Art

[0002] With rapid socioeconomic development, the rail transit industry, owing to its efficiency and convenience, has gradually become the preferred mode of transportation. Urban EMUs and maglev trains are currently considered the ideal means of transportation across urban areas, meeting both medium- and short-distance transportation needs. However, rail vehicle failures are inevitable during operation. In many cases, drivers can use the bypass function to allow the vehicle to continue operating and reach the next stop. In rare cases, a vehicle failure may necessitate waiting for assistance.

[0003] The current escape method for existing subways is to use the emergency evacuation door at the front of the driver's cab. However, for high-speed EMUs and maglev vehicles on elevated lines, it is not possible to set up emergency evacuation doors on the driver's cab side. In addition, the evacuation capacity of this emergency evacuation method is quite limited and the efficiency is low. In an emergency, trampling may occur, which may put the escaping personnel's lives in danger during the escape process.

[0004] Many existing rail vehicles, both domestically and internationally, are equipped with life ladders. To prevent passengers from accessing them, these ladders are typically located inside the driver's cab or in a box beneath the vehicle. This arrangement is inconvenient for drivers and passengers. Firstly, the driver's cab has limited space, making installing a life ladder inconvenient for the driver. Secondly, installing the life ladder in a box beneath the vehicle requires passengers to exit the vehicle in an emergency, significantly reducing evacuation and rescue efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an elevated line rail vehicle life-saving ladder installation structure and rail vehicle that can prevent passengers from touching it at will and facilitate the evacuation of passengers, in order to address the various inconveniences of currently arranging the life-saving ladder in the driver's cab or the box under the vehicle.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An elevated railway vehicle life-saving ladder installation structure includes a vehicle door, with an electrical panel installed on one side of the vehicle door. The structural features are:

[0008] A fixed bracket is provided on the inner side of the door of the electrical panel cabinet, and a life-saving ladder is hung on the fixed bracket;

[0009] The life-saving ladder comprises a life-saving ladder body and a hook assembly installed on the top of the life-saving ladder body, the hook assembly comprises a hook body that can be clamped into the fixing bracket and the door sill, the lower end of the hook body is installed with a positioning pin and is covered with a connecting sleeve;

[0010] A cavity is provided at the top of the life-saving ladder body, and the connecting sleeve is fixedly installed in the cavity. A slide groove is provided on the connecting sleeve, and the slide groove is spirally inclined downward and has an open position located at the highest point of the slide groove and a locked position located at the lower end of the slide groove. The height of the open position is greater than the height of the locked position. The end of the positioning pin is stuck in the slide groove. When the hook body is rotated by external force, the positioning pin slides along the slide groove. When the positioning pin slides to the locked position of the slide groove, the hook body of the hook assembly rotates to the locked state. When the positioning pin slides to the open position of the slide groove, the hook body of the hook assembly rotates to the open state.

[0011] The present invention places the life-saving ladder inside the electrical cabinet, preventing passengers from touching it while also addressing the limited space in the driver's cab. Furthermore, by designing a hook-type fixing bracket and hook assembly inside the electrical cabinet door, the present invention solves the installation issues of the life-saving ladder and the stability of the connection during escape. Therefore, if a vehicle needs to stop temporarily due to an accident but has not yet entered the platform, the life-saving ladder can be suspended from multiple door sills to achieve efficient passenger rescue and evacuation, avoiding hazards to passengers caused by accidents and temporary stops.

[0012] Obviously, the design of the present invention not only meets the demand for additional number of escape ladders, but also makes maximum use of the electrical panel cabinet space. In addition, when the vehicle is in normal operation, the escape ladder is out of reach of passengers, which greatly increases safety.

[0013] Preferably, a U-shaped opening is provided on the fixed bracket. When in the locked state, the hook body of the hook falls into the U-shaped opening, and the width of the U-shaped opening is greater than the outer diameter D of the hook body and smaller than the width L of the hook body. When the life-saving ladder is hung in the electrical cabinet, the life-saving ladder will not rotate or shake, thereby ensuring the safety of the electrical cabinet equipment.

[0014] Preferably, the bottom of the connecting sleeve is fixedly connected to a positioning bolt, and a through hole is provided at the bottom of the cavity. The positioning bolt passes through the through hole and is fastened with a locking nut to prevent the connecting sleeve from rotating in the cavity and affecting the opening and locking of the hook assembly.

[0015] Preferably, both sides of the positioning bolt are set as planes, the through hole is a waist-shaped hole, and the cross section of the through hole is consistent with the cross section of the positioning bolt, so as to further prevent the connecting sleeve from rotating in the cavity and affecting the opening and locking of the hook assembly.

[0016] Preferably, the slide grooves are provided on both sides of the connecting sleeve, the positioning pin is installed at the lower end of the hook body, the axis of the positioning pin intersects with the axis of the connecting sleeve, and the positioning pins on both sides of the hook body are respectively inserted into the slide grooves on both sides of the connecting sleeve to make the opening and locking actions of the hook assembly smoother.

[0017] Preferably, a spring is installed between the bottom of the hook body and the bottom surface of the connecting sleeve. When the hook body is in the open state, the spring is in a non-compressed state, and when the hook body is in the locked state, the spring is in a compressed state. This not only utilizes the spring reaction force to make the hook assembly more stable when locked, but also makes the hook assembly switch from the locked state to the open state smoother and more labor-saving.

[0018] Preferably, the slide groove is provided with a transition zone at the front end of the locking position, and the transition zone is provided as an upwardly inclined arc R. When the hook body enters the locking state, the positioning pin passes over the transition zone and enters the locking position, and presses against the upper edge of the slide groove in the locking position.

[0019] Based on the same inventive concept, the present invention also provides an elevated line rail vehicle, which includes a vehicle body, and the life-saving ladder installation structure is configured on the vehicle body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The life-saving ladder of the present invention is arranged in the cabinet door of the electrical panel cabinet, which not only fully utilizes the effective space in the electrical panel cabinet of the rail vehicle, but also ensures the safety and reliability of the life-saving ladder.

[0022] 2) The life-saving ladder hook of the present invention can be wall-mounted inside the electrical panel cabinet door when in a locked state, which can improve the stability of the life-saving ladder during operation and achieve easy state conversion.

[0023] 3) The hook-type life-saving ladder of the present invention can quickly rotate the hook assembly to the working position (open state) during emergency evacuation through the restoring force of the compression spring.

[0024] 4) A double slide groove structure is provided on the connecting sleeve of the present invention around its axis, thereby ensuring the stability of the positioning pin in the slide groove.

[0025] 5) The double sliding grooves on the connecting sleeve of the present invention are respectively provided with transition zones, and the arc R size of the transition zone plays the role of limiting and locking.

[0026] 6) A non-cylindrical positioning bolt is designed at the bottom of the connecting sleeve of the present invention, and a waist-shaped hole matching it is provided on the life-saving ladder body, so that the non-cylindrical positioning bolt and the waist-shaped hole form a limiting relationship, limiting the random rotation of the connecting sleeve, ensuring the stability of the hook assembly state and reliable use.

[0027] 7) The present invention is widely used in elevated rail vehicles such as EMUs and maglev vehicles, and provides convenience for vehicle design from the perspectives of space utilization and safety, with good application effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the elevated line rail vehicle life-saving ladder installation structure and the rail vehicle of the present invention.

[0030] Figure 2 Schematic diagram of the three-dimensional structure of a vehicle with a life ladder used for rescue.

[0031] Figure 3 This is a three-dimensional structural diagram of the life ladder installation structure (locked state).

[0032] Figure 4 It is a structural diagram of the hook locked state.

[0033] Figure 5 for Figure 4 A-A cross-sectional view.

[0034] Figure 6 This is a structural diagram of the hook rotating to the working position (open state).

[0035] Figure 7 for Figure 6 BB section view.

[0036] Figure 8 Schematic diagram of the hook rotation locking operation process.

[0037] Figure 9 The three-dimensional structure of the sleeve Figure 1 .

[0038] Figure 10 The three-dimensional structure of the sleeve Figure 2 . DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0040] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] See also Figure 1 - Figure 10 An embodiment of the elevated line rail vehicle life-saving ladder installation structure and rail vehicle of the present invention includes a vehicle body 6, a vehicle door 7 is installed on the vehicle body 6, an electrical panel cabinet 3 is installed on one side of the vehicle door 7, a fixed bracket 2 is provided on the inner side of the cabinet door 31 of the electrical panel cabinet 3, and a life-saving ladder 1 is hung on the fixed bracket 2.

[0043] The life-saving ladder 1 includes a life-saving ladder body 11 and a hook assembly 5 installed on the top of the life-saving ladder body 11. Cavities 12 are respectively provided at both ends of the top of the life-saving ladder body 11, and a protective cover 13 is respectively provided on the top of each cavity 12. The hook assembly 5 includes a hook body 51, a positioning pin 53 is installed at the lower end of the hook body 51, and a connecting sleeve 52 is fitted on the lower end of the hook body 51. A slide groove 521 is provided on the connecting sleeve 52. The slide groove 521 is distributed on the connecting sleeve 52 in a spiral shape and is inclined downward. The slide groove 521 has an open position 5211 located at the highest point of the slide groove and a locked position 5212 located at the lower end of the slide groove. The height of the open position 5211 is greater than the height of the locked position 5212.

[0044] The end of the positioning pin 53 is inserted into the slide groove 521, and the connecting sleeve 52 is fixedly installed in the cavity 12, that is, the hook assembly 5 is connected to the life ladder body 11. When the hook body 51 is rotated by external force, the positioning pin 53 slides along the slide groove 521. When the positioning pin 53 slides to the locked position 5212 of the slide groove 521, the hook body 51 is inserted into the fixed bracket 2 to form a locked state. When the positioning pin 53 slides to the open position 5211 of the slide groove 521, the hook body 51 is disengaged from the fixed bracket 2 to form an open state. When the hook body 51 is in the open state, the hook body 51 can be hooked onto the vehicle door sill 4 and then lowered to achieve passenger evacuation and rescue.

[0045] To facilitate the hanging of the life ladder 1, a U-shaped opening is provided on the fixing bracket 2. When locked, the hook body 51 of the hook assembly 5 falls into the U-shaped opening. To prevent the hook body 51 from rotating, the width of the U-shaped opening is larger than the outer diameter D of the hook body 51 and smaller than the width L of the hook body 51.

[0046] To prevent the connecting sleeve 52 from rotating in the cavity 12 , a through hole 14 is provided at the bottom of the cavity 12 , and a positioning bolt 524 is fixedly connected to the bottom of the connecting sleeve 52 . The positioning bolt 524 passes through the through hole 14 and is fastened with a washer 15 and a locking nut 16 .

[0047] To further prevent the connecting sleeve 52 from rotating within the cavity 12, the two sides of the positioning bolt 524 are provided with flat surfaces 5241. The through hole 14 is a waist-shaped hole, and the cross-section of the through hole 14 is consistent with the cross-section of the positioning bolt 524. During installation, the flat surfaces 5241 of the positioning bolt 524 align with the flat section of the through hole 14. Because the diameter of the side surface of the positioning bolt 524 in the non-flat area is larger than the diameter of the side surface in the flat area, the positioning bolt 524 is prevented from rotating within the through hole 14, meeting the requirements of limiting and installing the connecting sleeve 52.

[0048] To ensure smooth rotation of the hook body 51 within the connecting sleeve 52, the connecting sleeve 52 is provided with the slide grooves 521 on both sides. The lower end of the hook body 51 is mounted with the positioning pin 53, whose axis intersects with the axis of the hook body 51. The positioning pins 53 on both sides of the hook body 51 respectively snap into the slide grooves 521 on both sides of the connecting sleeve 52. This not only ensures that the two hook assemblies 5 can be locked or opened in opposite rotational directions, but also ensures smooth rotation of the hook body 51 during locking or opening. It should be noted that in this embodiment, for ease of description, the positioning pin 53 and the slide groove 521 only illustrate the assembly and movement relationship of one side.

[0049] To facilitate smooth opening of the hook assembly 5 during emergency rescue, a spring 54 is installed between the bottom of the hook body 51 and the bottom surface of the connecting sleeve 52. When the hook assembly 5 is in the locked state, the spring 54 is compressed. During emergency evacuation, the hook assembly 5 is rotated. Under the action of the restoring force of the spring 54, the positioning pin 53 of the hook assembly 5 can smoothly slide from the locked position 5212 of the slide groove 521 to the open position 5211, thereby opening the hook assembly 5 and conveniently hooking onto the vehicle door sill 4 to achieve the suspension and lowering of the life ladder 1. At the same time, the positioning pin is in close contact with the upper edge of the slide groove.

[0050] The slide 521 is provided with a transition zone 523 at the front end of the locked position 5212. The transition zone 523 is configured as an upwardly inclined arc R. When the hook assembly 5 enters the locked state, the positioning pin 53 passes through the transition zone 523 and enters the locked position 5212, pressing against the upper edge of the slide in the locked position 5212. When the hook assembly 5 is in the locked state, the positioning pin 53 must rotate counterclockwise along the slide 521 and pass through the transition zone 523 to open the hook assembly 5. In the locked state, the spring 54 is compressed, and the elastic restoring force of the spring 54 acts on the hook body 51, causing the positioning pin 53 to press against the upper edge of the slide 521 in the locked position 5212. When there is no external force acting on the hook assembly 5, the positioning pin 53 cannot pass through the transition zone 523, thus acting as a locking mechanism.

[0051] When the present invention is used, Figure 1 、 Figure 2 As shown, multiple fixing brackets 2 are provided inside the door 31 of the electrical cabinet 3, and multiple hook assemblies 5 are correspondingly provided on the life-saving ladder 1. The number and position of the life-saving ladders 1 are set according to the layout of the vehicle doors 7. The life-saving ladder 1 is installed inside the door 31 of the electrical cabinet 3, completely eliminating the driver and passenger areas, thereby increasing passenger capacity requirements and the safety of the life-saving ladder 1. In addition, on the outside of the door of the electrical cabinet 3, in areas accessible to passengers and visible to them, there is a prominent sign indicating that an escape ladder is available in the cabinet for use in an emergency.

[0052] As mentioned above, the life-saving ladder 1 is hidden inside the door of the electrical panel cabinet 3 when the vehicle is operating normally. Figure 2 As shown, the life ladder 1 is removed, the hook assembly 5 is opened, and the hook body 51 of the hook assembly 5 is hung on the vehicle door sill 4 to increase the stability of the life ladder 1, thereby achieving the evacuation of passengers on the elevated line vehicle. It should be noted that the life ladder body 11 itself is a telescopic structure, which is a common structure and is therefore not described here.

[0053] like Figure 3As shown, when stowed, the two hook assemblies 5 and the lowest rung of the life-saving ladder 1 are supported and limited by the fixed bracket 2. In the absence of external forces, the two hook assemblies 5 are tightened inward, i.e., the hook assemblies 5 are contracted and locked, and the overall thickness of the life-saving ladder 1 is minimized. Therefore, when the cabinet door 31 of the electrical cabinet 3 is closed, the life-saving ladder 1 is located between the cabinet door 31 and the electrical appliances within the cabinet, fully utilizing the available space within the cabinet and increasing the space utilization of the electrical cabinet 3.

[0054] like Figure 6 、 Figure 7 As shown, when the hook assembly 5 is in the open state, the spring 54 in the hook assembly 5 is in a non-compressed state, and the positioning pin 53 is pushed to the highest position of the slide groove 521 by the spring 54. When emergency evacuation is required, the hook assembly 5 hooks the vehicle door sill 4, and the force of the life ladder 1 is downward. The positioning pin 53 plays a bearing role and is in close contact with the uppermost edge of the slide groove 521 in the open position 5211 and will not slide.

[0055] like Figure 3 As shown, during the locking process of the hook assembly 5, the hook body 51 is rotated counterclockwise by manpower, the hook body 51 compresses the spring 54, and rotates counterclockwise downward along the inclination of the slide groove 521 on the connecting sleeve 52 through the positioning pin 53. When the entire hook assembly 5 rotates 40°, the positioning pin 53 passes the arc R of the transition zone 523 and reaches the end point of the slide groove 521 (locking position 5212). Under the reaction force of the spring 54, the positioning pin 53 presses against the upper edge of the slide groove locking position 5212. At this time, when there is no external force, the arc R of the transition zone 523 prevents the positioning pin 53 from rebounding. The opening process of the hook assembly 5 (the process of opening the hook assembly 5 in an emergency) is opposite to the locking operation steps, that is, the hook body 51 is rotated clockwise, and when the positioning pin 53 passes over the arc R of the slide groove transition area 523 through external force, the positioning pin 53 is pushed along the slide groove 521 to the upper starting position (open position 5211) under the action of the elastic restoring force of the spring 54. Therefore, when the hook body 51 is opened, due to the action of the spring 54, the operation is smoother than when locked, ensuring the convenience of operation in an emergency.

[0056] Combine Figure 3 and Figure 4 、 Figure 10 To ensure the stability of the hook body 51's movement within the connecting sleeve 52, the positioning pin 53 passes through the axis of the connecting sleeve 52, and the positioning pins 53 on both sides slide in the slide grooves 521 and 522, respectively. Based on the movement trajectory and movement relationship, the slide grooves 521 and 522 are arranged in a centrally symmetrical manner around the axis of the connecting sleeve 52.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiment in accordance with the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An elevated railway vehicle life-saving ladder installation structure, comprising a vehicle door (7), an electrical panel cabinet being installed on one side of the vehicle door, characterized in that: A fixed bracket (2) is provided on the inner side of the door of the electrical panel cabinet, and a life-saving ladder (1) is hung on the fixed bracket; The life-saving ladder comprises a life-saving ladder body (11) and a hook assembly (5) installed on the top of the life-saving ladder body (11), the hook assembly comprises a hook body (51) capable of being inserted into the fixing bracket and the door sill, a positioning pin (53) is installed at the lower end of the hook body, and a connecting sleeve (52) is mounted thereon; A cavity (12) is provided at the top of the life-saving ladder body (11), and the connecting sleeve (52) is fixedly installed in the cavity. A slide groove (521) is provided on the connecting sleeve. The slide groove is spirally inclined downward and has an open position (5211) located at the highest point of the slide groove and a locked position (5212) located at the lower end of the slide groove. The height of the open position is greater than the height of the locked position. The end of the positioning pin is stuck in the slide groove. When the hook body is rotated by external force, the positioning pin slides along the slide groove. When the positioning pin slides to the locked position of the slide groove, the hook body of the hook assembly rotates to the locked state. When the positioning pin slides to the open position of the slide groove, the hook body of the hook assembly rotates to the open state.

2. The installation structure of an elevated railway vehicle life-saving ladder according to claim 1, characterized in that: The fixing bracket is provided with a U-shaped opening. In the locked state, the hook body of the hook falls into the U-shaped opening, and the width of the U-shaped opening is larger than the outer diameter D of the hook body and smaller than the width L of the hook body.

3. The installation structure of an elevated railway vehicle life-saving ladder according to claim 1, characterized in that: The bottom of the connecting sleeve (52) is fixedly connected with a positioning bolt (524), and a through hole (14) is provided at the bottom of the cavity. The positioning bolt passes through the through hole and is fastened with a locking nut (16).

4. The installation structure of an elevated railway vehicle life-saving ladder according to claim 3, characterized in that: Both sides of the positioning bolt are set as planes (5241), the through hole is a waist-shaped hole, and the cross section of the through hole is consistent with the cross section of the positioning bolt.

5. The installation structure of an elevated railway vehicle life-saving ladder according to claim 1, characterized in that: The sliding grooves are provided on both sides of the connecting sleeve, the positioning pin is installed at the lower end of the hook body, the axis of the positioning pin intersects with the axis of the connecting sleeve, and the positioning pins on both sides of the hook body are respectively inserted into the sliding grooves on both sides of the connecting sleeve.

6. The installation structure of an elevated railway vehicle life-saving ladder according to claim 1, characterized in that: A spring is installed between the bottom of the hook body and the bottom surface of the connecting sleeve. When the hook body is in an open state, the spring is in a non-compressed state. When the hook body is in a locked state, the spring is in a compressed state.

7. The installation structure of an elevated railway vehicle life-saving ladder according to claim 1, characterized in that: The slide is provided with a transition zone (523) at the front end of the locking position, and the transition zone is provided as an upwardly inclined arc (R). When the hook body enters the locking state, the positioning pin passes over the transition zone and enters the locking position, and presses against the upper edge of the slide at the locking position.

8. An elevated line rail vehicle, comprising a vehicle body, characterized in that: The vehicle body is provided with a life-saving ladder installation structure according to any one of claims 1 to 7.

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