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CN107512282A - A kind of low-floor rail vehicle troubleshooting and motor protection device - Google Patents

A kind of low-floor rail vehicle troubleshooting and motor protection device Download PDF

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Publication number
CN107512282A
CN107512282A CN201710575388.1A CN201710575388A CN107512282A CN 107512282 A CN107512282 A CN 107512282A CN 201710575388 A CN201710575388 A CN 201710575388A CN 107512282 A CN107512282 A CN 107512282A
Authority
CN
China
Prior art keywords
plate
troubleshooting
protection device
rail vehicle
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710575388.1A
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Chinese (zh)
Other versions
CN107512282B (en
Inventor
王石
周业明
刘畅
刘玉文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Qingdao Sifang Co Ltd
Original Assignee
CRRC Qingdao Sifang Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201710575388.1A priority Critical patent/CN107512282B/en
Publication of CN107512282A publication Critical patent/CN107512282A/en
Application granted granted Critical
Publication of CN107512282B publication Critical patent/CN107512282B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61FRAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F19/00Wheel guards; Bumpers; Obstruction removers or the like
    • B61F19/04Bumpers or like collision guards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The present invention relates to a kind of low-floor rail vehicle troubleshooting and motor protection device, including the troubleshooting plate laterally set along overall width direction, the troubleshooting plate are fixed on the framework of bogie by mounting structure, and the troubleshooting plate outer surface is covered with cushion.The present invention is not only simple in construction, easy for installation, is readily disassembled, the anti-collision energy of troubleshooting plate also greatly improved, and effectively alleviates damage of the shock loading for motor, ensures traffic safety.

Description

A kind of low-floor rail vehicle troubleshooting and motor protection device
Technical field
The present invention relates to a kind of rail vehicle obstacle deflector, the more particularly to low-floor rail vehicle such as light rail troubleshooting and motor Protector, belong to rail vehicle troubleshooting technical field.
Background technology
Low-floor light rail train is because having efficient and convenient, energy-conserving and environment-protective, safety and comfort, handling capacity of passengers is big, operation cost is low etc. Advantage, it is rapidly developed at present, many cities put light rail train into effect at home.When train operation, line Some larger barriers are had on road unavoidably to abandon on track, with the operation of train, the barrier on track is very likely Sharp impacts occur with framework or motor, causes motor to stop, the damage of motor is caused when serious, influences traffic safety.
The content of the invention
It is good that dissatisfied technical problem certainly of the invention main is to provide a kind of shock-absorbing capacity, can effective protecting motor, ensure driving The low-floor rail vehicle troubleshooting and motor protection device of safety.
To achieve the above object, the technical scheme is that:
A kind of low-floor rail vehicle troubleshooting and motor protection device, including the troubleshooting plate laterally set along overall width direction, The troubleshooting plate is fixed on the framework of bogie by mounting structure, and the troubleshooting plate outer surface is covered with cushion.
Further, the cushion between rubber layer, with troubleshooting plate there is cavity to form air sac type structure.
Further, the most base of the cushion is less than the most base of the troubleshooting plate on vertical.
Further, the troubleshooting plate is V-shaped in the horizontal, middle to be protruded to traffic direction, the vertical section of the troubleshooting plate For U-shaped.
Further, the bottom plate of the troubleshooting plate is that the structure being upturned has an angle with horizontal plane.
Further, it is fixed at the top of the cushion on the vertical panel of troubleshooting plate, the bottom covering institute of the cushion State the bottom plate of troubleshooting plate and be fixed on bottom plate.
Further, the mounting structure includes shape for hat connecting plate, and center section and the framework of connecting plate pass through the first fastening Device is fixedly connected, and the both sides of connecting plate are fixedly connected by second fastener with troubleshooting plate.
Further, the first fastener between the connecting plate and framework is double bolt structures, double bolt structures Including fixed plate, two studs are fixed with fixed plate, cushion blocking is set with each stud, stud and cushion blocking pass through structure Top is fixed with nut after installing plate on frame.
Further, the cushion blocking is former and later two, respectively preceding cushion blocking and rear cushion blocking, and rear cushion blocking is T-shaped knot Structure, rear cushion blocking top have outwardly boss, and stud and boss pass through the mounting hole on connecting plate and framework installing plate, Preceding cushion blocking and rear cushion blocking are fixed.
Further, the skirtboard of the both ends of troubleshooting plate covering part framework both sides on vehicle traffic direction.
In summary, a kind of low-floor rail vehicle troubleshooting provided by the invention and motor protection device, with prior art Compare, have the following advantages that:
(1) present invention fixes troubleshooting plate architecturally, and one layer of cushion is covered on the outer surface of troubleshooting plate, not only It is simple in construction, easy for installation, it is readily disassembled, the anti-collision energy of troubleshooting plate also greatly improved, effectively alleviate shock loading Damage for motor, ensure traffic safety.
(2) the troubleshooting plate in the present invention adds length, and its both ends covers the skirtboard of framework both sides, its row of incorporating Fault device and motor protection device, not only act as troubleshooting effect, and prolongation also instead of motor protection device, effectively protect Motor, the characteristics of protecting two kinds of devices present invention incorporates troubleshooting and motor, simplify overall structure and the erector of device Sequence.
Brief description of the drawings
Fig. 1 is obstacle deflector of the present invention and the structure chart after framework assembling;
Fig. 2 is obstacle deflector structure chart of the present invention;
Fig. 3 is obstacle deflector local structural graph of the present invention;
Fig. 4 is Fig. 3 A-A sectional views;
Fig. 5 is Fig. 1 B direction views;
Fig. 6 is Fig. 1 I partial enlarged drawing;
Fig. 7 is double bolt structure figures of the invention;
Fig. 8 is Fig. 5 C-C sectional views.
As shown in Figures 1 to 8, troubleshooting plate 1, top plate 1a, bottom plate 1b, vertical panel 1c, framework 2, the first gap 3, second slits Mouth 4, cushion 5, cavity 6, construction opening 7, bolt 8, bolt 9, mounting structure 10, installing plate 11, slotted hole 12, connecting plate 13, double bolt structures 14, double-hole nut structure 15, fixed plate 16, stud 17, bolt hole 18, preceding cushion blocking 19, rear cushion blocking 20, boss 21, backing plate 22, nut 23, slotted hole 24, bolt 25, double-hole nut 26, it is stacked nut 27.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings:
As shown in figure 1, a kind of low-floor rail vehicle troubleshooting provided by the invention and motor protection device, including troubleshooting plate 1, troubleshooting plate 1 is arranged on the front of framework 2, and troubleshooting plate 1 is laterally set along overall width direction, and troubleshooting plate 1 passes through two groups of mounting structures 10 are fixed on framework 2.
As shown in Figures 2 to 4, troubleshooting plate 1 is V-shaped on vehicle formula horizontal direction, middle to be protruded to traffic direction, so Barrier on track can be thrown away, can not only reduced in vehicle operation by troubleshooting plate 1 from the both sides of troubleshooting plate 1 Air drag, barrier can also be avoided to enter the parts such as framework inner impact framework and the motor at rear and be not damaged by.
In order to improve the overall construction intensity of troubleshooting plate 1 and rigidity, troubleshooting plate 1 uses structure of the vertical section for U-shaped, troubleshooting The top plate 1a and bottom plate 1b of plate 1 have the first gap 3 in the position at center, beneficial to the bending of troubleshooting plate 1, also have in its both sides more Individual second gap 4, the mounting structure 10 of corresponding lower section, facilitates staff to dismount troubleshooting plate 1.In the vertical panel 1c of troubleshooting plate 1 On be provided with multiple lightening holes, to mitigate weight on the premise of the structural strength of troubleshooting plate 1 is ensured, meet light-weighted to vehicle It is required that.
As shown in Figure 2 and Figure 4, the outer surface of troubleshooting plate 1 uses rubber layer, this implementation covered with cushion 5, cushion 5 In example, there is cavity 6 preferably between troubleshooting plate 1 and cushion 5, cushion 5 forms air sac type structure in the front of troubleshooting plate 1. For vehicle in high-speed cruising, what barrier directly hit is not the troubleshooting plate 1 of metal, but the rubber buffer with airbag structure Layer 5, under the collective effect of elastomeric material and air sac type structure, improves the shock-absorbing capacity of obstacle deflector, alleviates barrier To destruction caused by troubleshooting plate 1 the anti-collision energy of troubleshooting plate 1 greatly improved, and then effectively alleviate shock loading in collision Damage for the motor at rear, ensure vehicle driving safety.
As shown in Figure 2 and Figure 4, in the present embodiment, cushion 5 completely covers the vertical panel 1c's and bottom plate 1b of troubleshooting plate 1 Part, open at both ends of the cushion 5 on overall width direction.The height of cushion 5 is much larger than the vertical panel 1c and bottom plate of troubleshooting plate 1 1b height and, after mounting, cushion 5 naturally droops, and then forms air bag between cushion 5 and troubleshooting plate 1 naturally Formula structure.By cleverly structure design, not only reach the purpose of buffering, also make it that the overall structure of obstacle deflector is simpler Single, installation and removal are convenient to.
As shown in Figure 2 and Figure 4, the top of cushion 5 is consolidated by the top of multiple bolts 8 and the vertical panel 1c of troubleshooting plate 1 Fixed, the bottom of cushion 5 covers the bottom plate 1b of troubleshooting plate 1 around vertical panel 1c, and cushion 5 passes through multiple bolts 9 and bottom plate 1b It is fixedly connected.In the present embodiment, it is preferable that the most base of cushion 5 is less than the most base of troubleshooting plate 1 on vertical, troubleshooting plate 1 Bottom plate 1b is that the structure being upturned has an angle with horizontal plane.So, it is cushion with the bar contact on rail level 5, for barrier in damping of shocks layer 5, cushion 5 can be produced frontal impact power, row by strength backward to the part of back The bottom plate 1b of baffle 1 cans that are upturned avoid the frontal impact, and then can further improve the anti-collision of troubleshooting plate 1 Can, ensure that troubleshooting plate 1 will not damage.
As shown in Figure 1 and Figure 5, the mounting structure 10 of corresponding troubleshooting plate 1, two installing plates 11 are provided with framework 2, are arranged Baffle 1 is fixed on installing plate 11 by mounting structure 10, and installing plate 11 is bolted on framework 2, in installing plate 11 On be provided with two slotted holes 12, can conveniently adjust installing plate 11 setting height(from bottom).
As shown in Figure 5 and Figure 6, mounting structure 10 includes a connecting plate 13, and connecting plate 13 preferably uses cap-shaped structure, cap The height of two sides of type structure can select to differ, not only can be with by controlling the different height of 13 liang of sides of connecting plate Make the troubleshooting plate 1 of V-arrangement easier for installation, can also preferably control the mounting distance between troubleshooting plate 1 and framework 2.Connection Part among plate 13 is fixedly connected by first fastener with installing plate 11, and the two side portions of connecting plate 13 pass through second respectively Fastener is fixedly connected with troubleshooting plate 1.
As shown in Figure 6 and Figure 7, first fastener is preferably using double bolt structures 14.Double bolt structures 14 include one piece Fixed plate 16, two studs 17 are fixed with fixed plate 16, two studs 17 are vertically arranged, and two are provided with fixed plate 16 Individual bolt hole 18, two studs 17 are inserted in bolt hole 18 and are welded and fixed in end respectively.It is set with and subtracts on each stud 17 Shaken pad, and in the present embodiment, cushion blocking is former and later two, is respectively preceding cushion blocking 19 and rear cushion blocking 20, and installing plate 11 is arranged on Between preceding cushion blocking 19 and rear cushion blocking 20, connecting plate 13 is arranged between rear cushion blocking 20 and fixed plate 16.
Wherein, rear cushion blocking 20 is T-shaped structure, and its top has an outwardly boss 21, and the diameter of boss 21 is smaller In the diameter of the mounting hole (not indicated in figure) on installing plate 11.When the height of boss 21 is more than the thickness of installing plate 11, preceding One layer of backing plate 22 of cushioning between cushion blocking 19 and rear cushion blocking 20.
During installation, the mounting hole that is first each passed through two studs 17 on connecting plate 13, then rear cushion blocking 20 is sleeved on On stud 17, stud 17 and boss 21 are then sleeved on stud 17 again through the mounting hole on installing plate 11, preceding cushion blocking 19 Go up and be arranged on the front of rear cushion blocking 20.After preceding cushion blocking 19 and rear cushion blocking 20 are sleeved on stud 17, in stud 17 Fixation is tightened in leading section by nut 23, in order to improve anti-loosing effect, is tightened again on nut 23 and fixes a stacked nut 27, Preceding cushion blocking 19 and rear cushion blocking 20 are mutually compressed after tightening nut 23 and stacked nut 27, play preferable effectiveness in vibration suppression. Meanwhile locking effect can also be realized using two fixations of nut 23, the stacked nut 27 of front end is using an end closure Structure, closure can be played a part of while fastening.This pair of bolt arrangement is to fix two studs in one piece of fixed plate 16 17, not only easy disassembly, extraordinary anti-loose effect can also be played.
As shown in Fig. 5, Fig. 6 and Fig. 8, second fastener preferably uses double-hole nut structure 15.The both sides of connecting plate 11 Part has one respectively and passes through double-hole nut structure 15 and troubleshooting plate 1 along vertically extending slotted hole 24, each slotted hole 24 Be fixedly connected, the convenient setting height(from bottom) for adjusting troubleshooting plate 1, ensure the bottommost of troubleshooting plate apart from rail level setting distance range It is interior.
Double-hole nut structure 15 includes two bolts 25 and a double-hole nut 26, and two bolts 25 pass through the He of troubleshooting plate 1 Connecting plate 13 tightens fixation by double-hole nut 26.Double-hole nut 26 can play preferable anti-loosing effect while fastening. Operating personnel are facilitated to pacify from front portion to facilitate installation, the position for corresponding to each double-hole nut structure 15 on cushion 5 is provided with The construction opening 7 of dress.
In the present embodiment, the length of troubleshooting plate 1 is increased, the both ends of troubleshooting plate 1 covering part on vehicle traffic direction Divide the skirtboard (not shown) of the both sides of framework 2, protect the framework 2 and electricity at rear to greatest extent in the range of vehicle gauge Machine, it incorporates the function of obstacle deflector and motor protection device, not only acts as troubleshooting effect, is also effectively protected motor. The assembling procedure of the device is decreased simultaneously, while has reached the purpose of loss of weight.
As described above, the plan content with reference to given by accompanying drawing, can derive similar technical scheme.In every case it is not de- From the content of technical solution of the present invention, any simple modification made according to technical spirit of the invention to above example, etc. With change and modification, in the range of still falling within technical solution of the present invention.

Claims (10)

1. a kind of low-floor rail vehicle troubleshooting and motor protection device, including the troubleshooting plate laterally set along overall width direction, its It is characterised by:The troubleshooting plate is fixed on the framework of bogie by mounting structure, and the troubleshooting plate outer surface is covered with slow Rush layer.
2. low-floor rail vehicle troubleshooting according to claim 1 and motor protection device, it is characterised in that:The buffering Layer between rubber layer, with troubleshooting plate there is cavity to form air sac type structure.
3. low-floor rail vehicle troubleshooting according to claim 1 and motor protection device, it is characterised in that:The buffering The most base of layer is less than the most base of the troubleshooting plate on vertical.
4. low-floor rail vehicle troubleshooting according to claim 1 and motor protection device, it is characterised in that:The troubleshooting Plate is V-shaped in the horizontal, and middle to be protruded to traffic direction, the vertical section of the troubleshooting plate is U-shaped.
5. low-floor rail vehicle troubleshooting according to claim 4 and motor protection device, it is characterised in that:The troubleshooting The bottom plate of plate is that the structure being upturned has an angle with horizontal plane.
6. low-floor rail vehicle troubleshooting according to claim 4 and motor protection device, it is characterised in that:The buffering The top of layer is fixed on the vertical panel of troubleshooting plate, and the bottom of the cushion covers the bottom plate of the troubleshooting plate and is fixed on bottom On plate.
7. low-floor rail vehicle troubleshooting according to claim 1 and motor protection device, it is characterised in that:The installation Structure includes shape for hat connecting plate, and the center section of connecting plate is fixedly connected with framework by first fastener, and the two of connecting plate Sidepiece is fixedly connected by second fastener with troubleshooting plate.
8. low-floor rail vehicle troubleshooting according to claim 7 and motor protection device, it is characterised in that:The connection First fastener between plate and framework is double bolt structures, and double bolt structures include fixed plate, solid in fixed plate Surely there are two studs, cushion blocking is set with each stud, after stud and cushion blocking pass through the installing plate on connecting plate and framework Top is fixed with nut.
9. low-floor rail vehicle troubleshooting according to claim 8 and motor protection device, it is characterised in that:The vibration damping Pad for former and later two, respectively preceding cushion blocking and rear cushion blocking, rear cushion blocking are T-shaped structure, are had at the top of rear cushion blocking outside Through the mounting hole on framework installing plate, preceding cushion blocking and rear cushion blocking are fixed for the boss of protrusion, stud and boss.
10. low-floor rail vehicle troubleshooting and motor protection device according to any one of claim 1 to 9, its feature exist In:The skirtboard of the both ends of troubleshooting plate covering part framework both sides on vehicle traffic direction.
CN201710575388.1A 2017-07-14 2017-07-14 A kind of low-floor rail vehicle troubleshooting and motor protection device Active CN107512282B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710575388.1A CN107512282B (en) 2017-07-14 2017-07-14 A kind of low-floor rail vehicle troubleshooting and motor protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710575388.1A CN107512282B (en) 2017-07-14 2017-07-14 A kind of low-floor rail vehicle troubleshooting and motor protection device

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CN107512282A true CN107512282A (en) 2017-12-26
CN107512282B CN107512282B (en) 2019-05-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953848A (en) * 2018-07-03 2018-12-07 黄山全晟密封科技有限公司 A kind of safe mechanical equipment edges and corners preventing rubber shell
CN109941302A (en) * 2018-10-18 2019-06-28 张明宇 A kind of barrier detecting apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110509947B (en) * 2019-08-26 2021-03-16 中车四方车辆有限公司 Vehicle bottom protection device for low-floor vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013123951A (en) * 2011-12-13 2013-06-24 Central Japan Railway Co Bumping off impact mitigating device with multilayer structure
CN203485929U (en) * 2013-09-23 2014-03-19 南车青岛四方机车车辆股份有限公司 Barrier removing device of high-speed railway vehicle
CN203511678U (en) * 2013-09-29 2014-04-02 湘潭市双力电机车制造有限公司 Frame of industrial and mining electric locomotive
KR20140055232A (en) * 2012-10-31 2014-05-09 현대로템 주식회사 Cowcatcher for railway vehicles
EP2910449A1 (en) * 2014-02-19 2015-08-26 Bombardier Transportation GmbH Impact protection for a running gear of a rail vehicle
CN105109512A (en) * 2015-07-01 2015-12-02 南车青岛四方机车车辆股份有限公司 Rail vehicle and head-car barrier removal piece thereof
CN105189211A (en) * 2013-02-07 2015-12-23 庞巴迪运输有限公司 Rail vehicle having a device for pedestrian protection and device for pedestrian protection
CN105599781A (en) * 2016-03-29 2016-05-25 深圳市乾行达科技有限公司 Honeycomb-type fault removal and energy absorption device for rail transit vehicle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013123951A (en) * 2011-12-13 2013-06-24 Central Japan Railway Co Bumping off impact mitigating device with multilayer structure
KR20140055232A (en) * 2012-10-31 2014-05-09 현대로템 주식회사 Cowcatcher for railway vehicles
CN105189211A (en) * 2013-02-07 2015-12-23 庞巴迪运输有限公司 Rail vehicle having a device for pedestrian protection and device for pedestrian protection
CN203485929U (en) * 2013-09-23 2014-03-19 南车青岛四方机车车辆股份有限公司 Barrier removing device of high-speed railway vehicle
CN203511678U (en) * 2013-09-29 2014-04-02 湘潭市双力电机车制造有限公司 Frame of industrial and mining electric locomotive
EP2910449A1 (en) * 2014-02-19 2015-08-26 Bombardier Transportation GmbH Impact protection for a running gear of a rail vehicle
CN105109512A (en) * 2015-07-01 2015-12-02 南车青岛四方机车车辆股份有限公司 Rail vehicle and head-car barrier removal piece thereof
CN105599781A (en) * 2016-03-29 2016-05-25 深圳市乾行达科技有限公司 Honeycomb-type fault removal and energy absorption device for rail transit vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108953848A (en) * 2018-07-03 2018-12-07 黄山全晟密封科技有限公司 A kind of safe mechanical equipment edges and corners preventing rubber shell
CN109941302A (en) * 2018-10-18 2019-06-28 张明宇 A kind of barrier detecting apparatus

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