CN102616087A - Front axle assembly for low-entrance bus - Google Patents

Front axle assembly for low-entrance bus Download PDF

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Publication number
CN102616087A
CN102616087A CN2012101007526A CN201210100752A CN102616087A CN 102616087 A CN102616087 A CN 102616087A CN 2012101007526 A CN2012101007526 A CN 2012101007526A CN 201210100752 A CN201210100752 A CN 201210100752A CN 102616087 A CN102616087 A CN 102616087A
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CN
China
Prior art keywords
front axle
bus
girder
axle assembly
arm
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Pending
Application number
CN2012101007526A
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Chinese (zh)
Inventor
宋斌
张金刚
肖渝
王艳丽
蒋林涛
吴飞
孔繁博
潘孝勇
秦万涛
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HUBEI TRI-RING AXLE Co Ltd
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HUBEI TRI-RING AXLE Co Ltd
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Application filed by HUBEI TRI-RING AXLE Co Ltd filed Critical HUBEI TRI-RING AXLE Co Ltd
Priority to CN2012101007526A priority Critical patent/CN102616087A/en
Publication of CN102616087A publication Critical patent/CN102616087A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a front axle assembly for a low-entrance bus, which belongs to the technical field of bus front axle assemblies. The front axle assembly is mainly used for solving the problems in the existing front axle of an 8-metre medium bus that 1-metre ultra wide passage of a carriage and one-step low floor cannot be realized, and turning radius is not small enough. The front axle assembly is characterized in that the front axle is an I-shaped beam, two ends of the I-shaped beam extend upwards and outwards, an upper layer connection end and a middle layer connection end are disposed on the I-shaped beam, the upper layer connection end is a plate spring seat located on a tire, the middle layer connection end is connected with a steering knuckle through a king pin, a straight tie rod arm is mounted outside one side steering knuckle arm, plate spring seats at two ends are at a distance of 2000-2200 mm, and radiation ribs and radiation holes are added to a brake drum. The front axle assembly has the advantages that floor of the bus is only 380 mm away from the ground, width of the passage reaches 1000 mm, space for disposing parts of chassis and turning angle of the bus are increased, turning radius is smaller and passing ability is better, and is mainly used for the 8-metre medium low-entrance bus.

Description

A kind of low inlet bus front bridge assembly
Technical field
The invention belongs to bus front bridge assembly technical field, be specifically related to a kind of low inlet bus front bridge assembly of 4.2T level.
Background technology
Along with the raising of development of modern industry and living standards of the people, for satisfying people to going out accommodating and the increasingly high requirement of traveling comfort.Existing 8 meters medium bus front axle assys mostly are made up of front axle, steering swivel, track arm, intermediate rod, vertical pulling lever arm, brake assembly, wheel hub and brake drum assembly, and wherein, front axle is the wide linear axis of rice; Two ends are connected with the inboard steering swivel of left and right wheel respectively; The suspension elastic element that is arranged on the front axle both sides is in the inboard below the end line on the wheel, and the leaf spring distance is less than rice, and the distance of front axle center is arrived less than 210mm in the intermediate rod center; Thereby 1 meter ultra fat pipe and the one-level that can not realize the compartment low floor of marking time; The front-wheel steering locking angle only can reach about 40 ° simultaneously, and turn radius is inadequately little, and crossing ability is also good inadequately.
Summary of the invention
The object of the invention just provides a kind of low inlet bus front bridge assembly; Spring block is placed on the tire; To realize 8 meters low inlet Bus Special propons of super-low floor and ultra fat pipe; Realize the one-level low floor of marking time to satisfy on medium bus, and have littler turn radius and better crossing ability.
Technical solution of the present invention is: a kind of low inlet bus front bridge assembly; Comprise front axle, steering swivel, track arm, intermediate rod, vertical pulling lever arm, brake assembly, wheel hub and brake drum assembly; It is characterized in that: described front axle is a H-girder; These H-girder two ends upwards, protruding, and have upper strata, middle level coupling end; The upper strata coupling end is a spring block, places on the tire; Be connected through stub between middle level coupling end and the steering swivel; The vertical pulling lever arm is contained in the outside of a side track arm; Distance between the two end plates spring abutment is 2000~2200mm; Increase radiating ribs and louvre on the brake wheel.
Intermediate rod width between centers H-girder center described in the technical solution of the present invention is of a size of 410~430mm.
H-girder described in the technical solution of invention adopts the 20CrMo material to process; Track arm and vertical pulling lever arm adopt the 40CrMo material to process; Intermediate rod employing body of rod specification is that the 35 drawn tube materials of ∮ 40 * 7mm are processed; Drg employing specification is that the casting base plate of ∮ 400 * 130mm is processed; Brake wheel adopts the MTCrMoCu30 wear-resistant cast iron material to process.
The present invention is owing to adopt structural I-beam, thereby can make the straight bar part in the middle of the H-girder not only be lower than the axle center of both sides wheel, and can reach more than 1 meter, thereby realizes that whole bridge drop strengthens, passage is widened.The present invention has been owing to strengthened the distance between the intermediate rod width between centers H-girder center, thereby not only makes the steering angle of car load reach 50 °, but also helps the layout of other parts of car load.
Adopt said structure to compare, can obtain following useful effect with traditional bus front bridge:
1, the floor is merely 380mm with floor level in the car, has guaranteed that car load realization one-level is marked time to get on the bus;
2, passage width reaches 1000mm, has increased the arrangement space of chassis part;
3, the length through the lengthening track arm increases intermediate rod to the distance between the H-girder; Make the intermediate rod center reach 420mm to the distance at H-girder center; Be convenient to very much the arrangement of parts of low-floor bus propons; Also increased simultaneously the steering angle of car load, turn radius is littler, and crossing ability is better.
The present invention is mainly used in the low inlet of 8 meters medium buss bus front bridge assembly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the birds-eye view of Fig. 1.
Fig. 3 is A-A cutaway view of Fig. 1.
Fig. 4 is the structural representation of track arm of the present invention.
Fig. 5 is the birds-eye view of Fig. 4.
Fig. 6 is a drag link arm configuration scheme drawing of the present invention.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the birds-eye view of Fig. 6.
The specific embodiment
Below in conjunction with accompanying drawing the low inlet of the present invention bus front bridge assembly is described further.
A kind of low inlet bus front bridge assembly concrete structure of the present invention is following: comprise H-girder 1, steering swivel 2, track arm 3 and 5, intermediate rod 4, vertical pulling lever arm 6, brake assembly 7, wheel hub and brake drum assembly 8.Track arm 3 and 5 and vertical pulling lever arm 6 through bolted connection to steering swivel 2, intermediate rod 4 two ends are connected with 5 with track arm 3 respectively, drg 7 passes through bolted connection to steering swivel 2, wheel hub and brake drum assembly 8 are locked on the steering swivel 2 through jam nut.H-girder 1 two ends upwards, protruding, and have upper strata, middle level coupling end.The upper strata coupling end is a spring block, places on the tire; Be connected through stub between middle level coupling end and the steering swivel 2.Intermediate rod 4 width between centers H-girders 1 center is of a size of 420mm.
H-girder 1 adopts the low inlet of the 4.2T level passenger vehicle of my company's independent research with front axle (material adopts 20CrMo); The characteristics of this front axle are that spring block is placed on the wheel; Strengthen the distance of spring block to wheel center simultaneously, to realize super-low floor and ultra fat pipe.
Steering swivel 2 adopts east wind 145 type steering swivels (material adopts 40MnB), inside and outside bearing designation coupling 7611E/7609E.
Track arm 3,5 adopts special design, has increased brachium, makes the intermediate rod center reach 420mm (being more than 2 times of traditional bus front bridge size) to the distance at H-girder center; The design of this track arm makes intermediate rod and H-girder spacing increase; For the layout of other parts of car load provides enough spaces, brachium can make the steering angle of car load reach 50 ° after increasing simultaneously, much larger than the steering angle of traditional bus front bridge; Make turn radius littler; Crossing ability is better, and the track arm material after the improvement adopts 40CrMo, to satisfy the needs that brachium lengthening back steering torque increases.
Vertical pulling lever arm 6 is because of receiving the restriction of structural I-beam; Vertical pulling lever arm 6 can't be contained in the place ahead of the left steering joint of bridge by traditional fit; Cleverly utilize the rigging position of left steering joint arm through the calculating that turns to of car load this moment, the vertical pulling lever arm is assemblied in the outside of left steering joint arm; Make it to become one, to realize the good function that turns to.Vertical pulling lever arm material after the improvement adopts 40CrMo.
Intermediate rod 4 is because of track arm 3,5 lengthenings; The in use suffered moment of intermediate rod 4 will increase; So in the design of intermediate rod 4, adopted the body of rod of additional strengthening, body of rod specification is that (material 35 drawn tubes, this rank propons of tradition adopts body of rod specification to adopt ∮ 35 * 6mm) to ∮ 40 * 7mm.
It is the casting base plate drg of ∮ 400 * 130mm that drg in the brake assembly 7 adopts specification, and its ferrodo adopts the high performance material of Bus Special, to satisfy the frequent usefulness of passenger vehicle brake.
Brake wheel in wheel hub and the brake drum assembly 8 is the high performance material of Bus Special because of the employing of ferrodo material; So what on the material of brake wheel, select for use is the wear-resistant cast iron material (MTCrMoCu30) that is complementary with high-quality friction material; Simultaneously radiating ribs and louvre on brake wheel, have been increased, to satisfy the applying working condition of passenger vehicle bridge.
Through the design of above-mentioned part and selecting for use of material, a kind of low inlet bus front bridge assembly of the present invention is compared with traditional bus front bridge and can be obtained following improvement:
1, spring block places on the wheel, makes the leaf spring width between centers reach 2106mm, has increased the riding stability of car load;
2, realized ultra wide passage, the passage developed width has reached 1000mm, has strengthened crossing ability;
3, reduced floor level in the car, realized that one-level marks time, the floor is merely 380 apart from floor level in the car;
4, intermediate rod width between centers H-girder center size reaches 420mm; Make whole bridge compare the steering angle (50 °) that has reached bigger with traditional bus front bridge; Make the car load turn radius littler,, abdicated more space than long track arm simultaneously and arranged other parts of car load through better;
5, strengthened intermediate rod makes car load performance is more reliable in use;
6, the match materials of brake lining and brake wheel, brake wheel increase the special design of radiating ribs and louvre, make car load obtain better deceleration and stopping performance, have satisfied the applying working condition of passenger vehicle bridge;
7, this front axle checks that by QC/T513-1999 automobile front axle fatigue life test method its result satisfies QC/T483-1999 automobile front axle limit value fatigue life.

Claims (3)

1. one kind is hanged down inlet bus front bridge assembly; Comprise front axle, steering swivel, track arm, intermediate rod, vertical pulling lever arm, brake assembly, wheel hub and brake drum assembly; It is characterized in that: described front axle is a H-girder; These H-girder two ends upwards, protruding, and have upper strata, middle level coupling end; The upper strata coupling end is a spring block, places on the tire; Be connected through stub between middle level coupling end and the steering swivel; The vertical pulling lever arm is contained in the outside of a side track arm; Distance between the two end plates spring abutment is 2000~2200mm; Increase radiating ribs and louvre on the brake wheel.
2. a kind of low inlet bus front bridge assembly according to claim 1 is characterized in that: described intermediate rod width between centers H-girder center is of a size of 410~430mm.
3. a kind of low inlet bus front bridge assembly according to claim 1 and 2 is characterized in that: described H-girder adopts the 20CrMo material to process; Track arm and vertical pulling lever arm adopt the 40CrMo material to process; Intermediate rod employing body of rod specification is that the 35 drawn tube materials of ∮ 40 * 7mm are processed; Drg employing specification is that the casting base plate of ∮ 400 * 130mm is processed; Brake wheel adopts the MTCrMoCu30 wear-resistant cast iron material to process.
CN2012101007526A 2012-04-09 2012-04-09 Front axle assembly for low-entrance bus Pending CN102616087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101007526A CN102616087A (en) 2012-04-09 2012-04-09 Front axle assembly for low-entrance bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101007526A CN102616087A (en) 2012-04-09 2012-04-09 Front axle assembly for low-entrance bus

Publications (1)

Publication Number Publication Date
CN102616087A true CN102616087A (en) 2012-08-01

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CN2012101007526A Pending CN102616087A (en) 2012-04-09 2012-04-09 Front axle assembly for low-entrance bus

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1755113A1 (en) * 1968-03-30 1971-07-29 Daimler Benz Ag Suspension of steerable front wheels of motor vehicles
DE3136305A1 (en) * 1981-09-12 1983-03-24 Hermann Dr.-Ing. 7412 Eningen Klaue Drive axle for heavy motor vehicles
US4934733A (en) * 1989-02-22 1990-06-19 Dbx Corporation Trailer suspension apparatus
EP0456096A1 (en) * 1990-05-07 1991-11-13 MENARINI S.p.A. Drive system for a bus particularly for local traffic
EP1344661B1 (en) * 2002-03-15 2008-06-25 ArvinMeritor Technology, LLC A suspension system for a low floor vehicle
CN201313484Y (en) * 2008-09-08 2009-09-23 安徽安凯福田曙光车桥有限公司 Gate type large spring distance front axle assembly
CN202557217U (en) * 2012-04-09 2012-11-28 湖北三环车桥有限公司 Front axle assembly for low-entrance passenger vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1755113A1 (en) * 1968-03-30 1971-07-29 Daimler Benz Ag Suspension of steerable front wheels of motor vehicles
DE3136305A1 (en) * 1981-09-12 1983-03-24 Hermann Dr.-Ing. 7412 Eningen Klaue Drive axle for heavy motor vehicles
US4934733A (en) * 1989-02-22 1990-06-19 Dbx Corporation Trailer suspension apparatus
EP0456096A1 (en) * 1990-05-07 1991-11-13 MENARINI S.p.A. Drive system for a bus particularly for local traffic
EP1344661B1 (en) * 2002-03-15 2008-06-25 ArvinMeritor Technology, LLC A suspension system for a low floor vehicle
CN201313484Y (en) * 2008-09-08 2009-09-23 安徽安凯福田曙光车桥有限公司 Gate type large spring distance front axle assembly
CN202557217U (en) * 2012-04-09 2012-11-28 湖北三环车桥有限公司 Front axle assembly for low-entrance passenger vehicle

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Application publication date: 20120801