CN110453855B - Slope type boarding device for urban rail transit vehicle base - Google Patents

Slope type boarding device for urban rail transit vehicle base Download PDF

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Publication number
CN110453855B
CN110453855B CN201910810303.2A CN201910810303A CN110453855B CN 110453855 B CN110453855 B CN 110453855B CN 201910810303 A CN201910810303 A CN 201910810303A CN 110453855 B CN110453855 B CN 110453855B
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China
Prior art keywords
boarding
slope
rail transit
urban rail
ground
Prior art date
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Application number
CN201910810303.2A
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Chinese (zh)
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CN110453855A (en
Inventor
谢钦
熊朝辉
缪东
史明红
廖永亮
肖俊
刘奥
占俊
葛红
郭钦
王德威
程春阳
郭文浩
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Priority to CN201910810303.2A priority Critical patent/CN110453855B/en
Publication of CN110453855A publication Critical patent/CN110453855A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/002Ramps
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/18Balustrades; Handrails
    • E04F11/1865Collapsible or portable balustrades
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/002Ramps
    • E04F2011/005Ramps collapsible, e.g. folding, telescopic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

The invention discloses a slope boarding device for an urban rail transit vehicle base, which is arranged between a low ground (1) and a high ground (9) and comprises a lifting boarding mechanism (2) and a telescopic supporting hydraulic mechanism (3) buried in a pit foundation (8), wherein one end of the boarding mechanism (2) is hinged with the end part of the high ground (9), the bottom of the other end of the boarding mechanism is connected with the supporting hydraulic mechanism (3), and the telescopic supporting hydraulic mechanism (3) drives the other end of the boarding mechanism (2) to ascend or descend so as to respectively form a slope communicated between the high ground (9) and the low ground (1) and a boarding slope between the high ground and a vehicle door. The slope boarding device for the urban rail transit vehicle base is characterized in that the slope boarding device is provided with a slope which is arranged at the bottom of the slope boarding device, and the slope boarding device is arranged at the top of the slope boarding device.

Description

Slope type boarding device for urban rail transit vehicle base
Technical Field
The invention belongs to the technical field of urban rail transit, and particularly relates to a slope boarding device for a base of an urban rail transit vehicle.
Background
The vehicle base is an important place for cleaning, maintaining and repairing rail transit vehicles and other related system equipment, and provides guarantee for normal operation of the vehicles. When the train enters the vehicle base, a driver needs to clean, maintain and repair the bottom of the train on one hand, and clean, maintain and repair the interior, the body and the like of the train by getting on and off the train through the boarding device on the other hand.
At present, both domestic and foreign vehicle base boarding devices adopt fixed and horizontal ground automatic lifting and lowering devices and are arranged at the positions of cab doors when trains are parked. However, both the fixed boarding device and the automatic lifting boarding device on the horizontal ground have the defects that: the fixed boarding device is arranged near the annunciator, so that certain influence is caused on the sight of a driver, and the driving signal is not easy to observe by the driver when the train enters a warehouse; meanwhile, the fixed boarding device occupies the running space of train maintenance and drivers and passengers due to large volume, so that the smoothness of maintenance operation is reduced, and the overall attractiveness in the vehicle base is affected. The automatic lifting boarding ladder on the horizontal ground can only board on the horizontal ground, is not suitable for boarding on a slope in a train checking warehouse, as shown in fig. 1, a vehicle parking train position and a vehicle train checking position are arranged in a domestic urban rail transit vehicle base, the track elevation of the vehicle parking train position is flush with the ground, the track elevation of the vehicle train checking position is higher than the ground elevation through a slope, and personnel board on the slope at the train checking position, so that the existing boarding ladder cannot realize the function.
Patent CN108590501a discloses an automatic lifting boarding ladder system for urban rail transit vehicle base, which comprises a mounting base plate arranged on the low ground and a pit arranged below the mounting base plate, wherein a lifting unit and a control box are arranged in the pit below the mounting base plate, the lifting unit comprises a lifting mechanism and a first driving mechanism, a boarding unit is arranged above the mounting base plate, and the boarding unit comprises a boarding platform, a second driving mechanism and a ladder. The lifting mechanism can be controlled to fold or unfold through the first driving mechanism, lifting of the boarding platform is achieved, meanwhile extension and retraction of steps can be achieved, drivers, passengers and maintenance personnel can get on and off the train, and the phenomenon that the boarding ladder blocks vision and influences driving signal observation when the train enters the warehouse is avoided. But the device is also not suitable for boarding at the slope, and the pit occupies large space, and the overall structure is complex and the stability is poor.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a slope boarding device for an urban rail transit vehicle base, wherein one end of a boarding mechanism is hinged with the end part of a high ground, and the other end of the boarding mechanism is driven by a supporting mechanism to lift under the telescopic drive, so that a lower inclined plane is respectively formed to replace a slope in the prior art to realize communication between the low ground and the high ground, and the ascending slope is formed to realize the boarding function, particularly realize boarding at the slope, and solve the problem of boarding at the slope which is not solved in the prior art.
In order to achieve the above purpose, the invention provides a slope boarding device for urban rail transit vehicles, which is arranged between low ground and high ground and comprises a lifting boarding mechanism and a telescopic supporting hydraulic mechanism buried in a pit foundation;
one end of the boarding mechanism is hinged with the end part of the high ground, the bottom of the other end of the boarding mechanism is connected with the supporting hydraulic mechanism, and the other end of the boarding mechanism is driven to ascend or descend by the expansion and contraction of the supporting hydraulic mechanism so as to form a slope for communicating the high ground with the low ground and a boarding slope between the high ground and the vehicle door respectively.
Further, the boarding mechanism comprises an inclined plane section and a boarding platform section which is horizontally arranged, one end of the inclined plane section is hinged with the end part of the high ground, and the other end of the inclined plane section is hinged with the boarding platform section.
Further, the supporting hydraulic mechanism comprises a plurality of groups of supporting hydraulic rods which are arranged at intervals, and a plurality of groups of grooves used for fixing the supporting hydraulic rods are arranged on the pit foundation.
Further, guardrails are arranged on two sides of the boarding mechanism, and each guardrail comprises two sections which are separately arranged and respectively correspond to the inclined surface section and the boarding platform section.
Further, the guardrail is movably connected with the boarding mechanism in a turnover way.
Further, the device also comprises a baffle plate arranged on the low ground, and the baffle plate is of a foldable structure.
Further, the baffle comprises a first baffle plate fixed on the low ground and a second baffle plate hinged with the first baffle plate.
Further, the connection of the first baffle and the second baffle is aligned with the edge of the bottom groove of the boarding platform segment.
Further, the width of the baffle is equal to the width of the low ground.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) According to the slope boarding device for the urban rail transit vehicle base, one end of the boarding mechanism is hinged with the end part of the high ground, and the other end of the boarding mechanism is driven by the supporting mechanism to lift under the telescopic driving, so that the lower inclined planes are respectively formed to replace the slopes in the prior art to realize communication between the low ground and the high ground, the upward inclined planes are formed to realize the boarding function, particularly the boarding at the inclined planes is realized, and the problem of boarding at the inclined planes which are not solved in the prior art is solved.
(2) The slope boarding device for the urban rail transit vehicle base is divided into two sections, the inclined surface sections and the boarding platform sections can be bent to form different angles, the boarding platform is lifted under the action of the supporting hydraulic rod, and the inclined surface sections are lifted accordingly, so that a boarding inclined surface is formed between the lifted boarding platform and the high ground, the flexibility of the boarding mechanism is improved, a horizontal structure is provided at the boarding position, and a safer and more comfortable boarding support structure is provided for maintenance staff.
(3) According to the slope boarding device for the urban rail transit vehicle base, the guardrails are movably connected with the boarding mechanism, the guardrails can be folded up and down relative to the boarding mechanism, when the boarding mechanism is in a descending state, the guardrails are folded up to form protection on two sides of the boarding mechanism, when the boarding mechanism is in an ascending state, the guardrails are folded down to be folded at the bottom of the boarding mechanism, on one hand, protection can be formed on two sides of the boarding mechanism, and on the other hand, the boarding mechanism can be folded up to avoid shielding when the boarding mechanism is in a descending state.
(4) According to the slope boarding device for the urban rail transit vehicle base, the baffle is arranged on the low ground and positioned at the edge of the groove, so that a shielding structure is formed at the upper part of the groove, and personnel are prevented from falling into a device foundation pit below the boarding device.
Drawings
FIG. 1 is a partial structure of a prior art vehicle base;
FIG. 2 is an isometric view of a base ramp boarding device for urban rail transit vehicles in a lowered condition in accordance with an embodiment of the present invention;
FIG. 3 is an isometric view of a base ramp boarding device of an urban rail transit vehicle in an embodiment of the present invention;
fig. 4 is a front view showing a lifting state of a base slope boarding device for urban rail transit vehicles according to an embodiment of the present invention.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-low ground, 2-boarding mechanism, 3-supporting hydraulic mechanism, 4-first hinge, 5-second hinge, 6-guardrail, 7-baffle, 8-pit foundation, 9-high ground.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 2 is an isometric view of a descent state of a base ramp boarding device for an urban rail transit vehicle in an embodiment of the invention. As shown in fig. 2, the ramp type vehicle waiting device of the present invention comprises a boarding mechanism 2, a supporting hydraulic mechanism 3, a guardrail 6 and a baffle 7, wherein the boarding mechanism 2 is arranged between a low ground 1 and a high ground 9, the boarding mechanism 2 is a variable lifting mechanism, one end of the boarding mechanism 2 is connected with the end part of the high ground 9 in a descending state, and the other end is connected with the low ground 1, so that a downward inclined plane is formed to replace a slope in the prior art to realize communication between the low ground 1 and the high ground 9, and meanwhile, a worker can enter the low ground 1 to clean, maintain and repair the bottom of the vehicle.
The bottom of the boarding mechanism 2 is provided with a supporting hydraulic mechanism 3, the supporting hydraulic mechanism 3 comprises a plurality of groups of supporting hydraulic rods, preferably 2-4 groups, the pit foundation 8is provided with grooves which are arranged at 2-4 positions corresponding to the supporting hydraulic mechanism 3 and used for placing the supporting hydraulic rods, and the grooves are uniformly arranged at intervals; the support hydraulic rod comprises a plurality of sections sleeved, the extension or the contraction of the hydraulic rod is realized under the action of the hydraulic cylinder, one end of the support hydraulic rod is fixed in the groove, the other end of the support hydraulic rod props against the bottom of the boarding mechanism 2 after being extended, and the boarding structure 2 is pushed to be lifted through the action of the support hydraulic rod.
Preferably, each set of support hydraulic stems comprises 2 or 3 support hydraulic stems arranged side by side for forming a stable support at the bottom of the boarding mechanism 2.
Fig. 3 is an isometric view of a lifting state of a base ramp boarding device for an urban rail transit vehicle in an embodiment of the invention. As shown in fig. 3, the boarding mechanism 2 comprises two sections, one section is an inclined surface section, the other section is a boarding platform section, the boarding platform section is kept horizontal all the time, a group of supporting hydraulic rods are arranged at the bottom of the boarding platform section, one end of the inclined surface section is connected with the end of the high ground 9 through a first hinge 4, the other end of the inclined surface section is connected with the boarding platform section through a second hinge 5, different angles can be formed by bending the inclined surface section and the boarding platform section, the boarding platform is lifted under the action of the supporting hydraulic rods, the inclined surface section is lifted along with the lifting of the boarding platform, so that a boarding inclined surface is formed between the lifted boarding platform and the high ground 9, and cleaning, maintenance and repair of the vehicle by workers are facilitated. Through the combined action of the foldable boarding mechanism 2 and the supporting hydraulic mechanism 3, a lifting inclined plane is formed, so that the original function of a slope is realized through one device, the ascending slope can be formed by lifting to realize the boarding function, particularly the boarding at the slope is realized, and the problem of boarding at the slope which is not solved in the prior art is solved.
Fig. 4 is a front view showing a lifting state of a base slope boarding device for urban rail transit vehicles according to an embodiment of the present invention. As shown in fig. 4, the two sides of the boarding mechanism 2 are respectively provided with a guardrail 6, and the guardrail 6 comprises two sections which are separately arranged and respectively correspond to the inclined surface sections and the boarding platform sections and is used for forming protection on the two sides of the boarding mechanism 2 to prevent workers from falling from the boarding mechanism 2.
Preferably, the guardrail 6 is movably connected with the boarding mechanism 2, the guardrail 6 can be folded up and down relative to the boarding mechanism 2, when the boarding mechanism is in a descending state, the guardrail 6 is folded up to form protection on two sides of the boarding mechanism 2, and when the boarding mechanism is in an ascending state, the guardrail 6 is folded down to be folded at the bottom of the boarding mechanism 2. Further, a locking device and a driving control device are further arranged between the guardrail 6 and the boarding mechanism 2, after the guardrail is folded upwards, the locking device is used for locking and fixing, and the driving control device is used for driving and controlling folding of the guardrail 6. Further, when the boarding device is lifted or lowered, the guardrail 6 is lifted by the screw drive
Preferably, the baffle 7 is arranged on the low ground 1, the baffle 7 is of a foldable structure, the baffle 7 comprises a first baffle and a second baffle, the first baffle and the second baffle are hinged and mutually folded to form a mutually overlapped or vertical structure, the first baffle is fixed on the low ground 1, the joint of the second baffle and the first baffle is aligned with the edge of the groove at the bottom of the boarding platform section, when the boarding mechanism 2 is lifted, the second baffle is lifted upwards, and finally a shielding structure is formed on the upper part of the groove to prevent relevant personnel or objects from falling into the groove.
Preferably, the width of the baffle is equal to the width of the low ground 1, so that the shielding of the recess is achieved omnidirectionally.
Preferably, the device is provided with a sensor device, which can automatically judge the state of stopping the warehouse entry and driving away of the train, and effectively control the automatic lifting of the boarding device.
When the vehicle is driven into the warehouse and stopped, the sensor triggers and starts the supporting hydraulic mechanism 3 and the baffle 7 to lift upwards and drive the boarding device 2 to lift to the height of the floor surface of the vehicle, and meanwhile, the sensor triggers an alarm to prevent other people or vehicles from falling into the foundation pit below when triggered, as shown in fig. 3 and 4. When the boarding device is lifted to the highest position, drivers and maintenance staff can get on and off the train through the boarding device.
When the vehicle is overhauled and driven away, the sensor triggers and starts the supporting hydraulic cylinder 3 and the baffle 7 to retract downwards. The boarding device 2 moves downwards along with the supporting hydraulic cylinder 3 and drives the guardrail 6 to move downwards, and the boarding device descends to the ground level in the warehouse to form a slope, so that other operations in the warehouse are not affected, as shown in fig. 2.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (6)

1. The slope boarding device for the urban rail transit vehicle base is arranged between a low ground (1) and a high ground (9) and is characterized by comprising a lifting boarding mechanism (2) and a telescopic supporting hydraulic mechanism (3) buried in a pit foundation (8);
One end of the boarding mechanism (2) is hinged with the end part of the high ground (9), the bottom of the other end of the boarding mechanism is connected with the supporting hydraulic mechanism (3), and the expansion and contraction of the supporting hydraulic mechanism (3) drives the other end of the boarding mechanism (2) to ascend or descend so as to respectively form a slope for communicating between the high ground (9) and the low ground (1) and a boarding slope between the high ground and a vehicle door;
the boarding mechanism (2) comprises an inclined plane section and a boarding platform section which is horizontally arranged, one end of the inclined plane section is hinged with the end part of the high ground (9), and the other end of the inclined plane section is hinged with the boarding platform section;
A groove is arranged on the pit foundation (8) corresponding to the supporting hydraulic mechanism (3); and be equipped with baffle (7) on low ground (1), the baffle is collapsible structure, including fix low ground (1) first separation blade and with first separation blade articulated second separation blade, just the second separation blade can upwards lift the recess upper portion forms and shelters from the structure.
2. The urban rail transit vehicle base slope boarding device according to claim 1, wherein the supporting hydraulic mechanism (3) comprises a plurality of groups of supporting hydraulic rods which are arranged at intervals, and the pit foundation (8) is provided with a plurality of groups of grooves for fixing the supporting hydraulic rods.
3. The urban rail transit vehicle base slope boarding device according to claim 1, characterized in that both sides of the boarding mechanism (2) are provided with guardrails (6), and the guardrails comprise two sections which are separately arranged and respectively correspond to the inclined surface section and the boarding platform section.
4. A base ramp boarding device for urban rail transit vehicles according to claim 3, characterized by the fact that the flexible connection between the guardrail (6) and the boarding means (2) can be folded.
5. The urban rail transit vehicle base ramp boarding device of claim 1, wherein the junction of the first and second baffles is aligned with the edge of the boarding platform segment bottom groove.
6. A base ramp boarding device for urban rail transit vehicles according to claim 1 or 5, characterized in that the width of the baffle is equal to the width of the low ground (1).
CN201910810303.2A 2019-08-29 2019-08-29 Slope type boarding device for urban rail transit vehicle base Active CN110453855B (en)

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CN110453855B true CN110453855B (en) 2024-08-06

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395668B (en) * 2020-04-29 2025-02-14 大洲设计咨询集团有限公司 A variable ramp device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204777770U (en) * 2015-07-02 2015-11-18 苏州美罗升降机械有限公司 Axle is stepped on to bridge deck width extensible movable type
CN207296490U (en) * 2017-10-03 2018-05-01 江苏荣大文化创意有限公司 It is a kind of to facilitate the waiting booth that disabled person gets on the bus
CN211007371U (en) * 2019-08-29 2020-07-14 中铁第四勘察设计院集团有限公司 Slope type boarding device for urban rail transit vehicle base

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0674796U (en) * 1993-04-01 1994-10-21 有限会社ナツ・コープ Opening protection unit
JP4834494B2 (en) * 2006-08-25 2011-12-14 アイシン軽金属株式会社 Slope device for vehicle
WO2011146190A2 (en) * 2010-05-18 2011-11-24 Sonoco Development, Inc. Paper ramp
US9561448B1 (en) * 2016-04-15 2017-02-07 John Bethers Mobile action sports ramp
CN109051895B (en) * 2018-06-15 2023-09-12 中国船舶重工集团应急预警与救援装备股份有限公司 Auxiliary cargo bridge for self-equipped up-down conveyor
CN108996250A (en) * 2018-07-25 2018-12-14 王海平 A kind of removable steps on vehicle bridge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204777770U (en) * 2015-07-02 2015-11-18 苏州美罗升降机械有限公司 Axle is stepped on to bridge deck width extensible movable type
CN207296490U (en) * 2017-10-03 2018-05-01 江苏荣大文化创意有限公司 It is a kind of to facilitate the waiting booth that disabled person gets on the bus
CN211007371U (en) * 2019-08-29 2020-07-14 中铁第四勘察设计院集团有限公司 Slope type boarding device for urban rail transit vehicle base

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