CN2142795Y - Rear axle of light bus with high performance - Google Patents
Rear axle of light bus with high performance Download PDFInfo
- Publication number
- CN2142795Y CN2142795Y CN 92214191 CN92214191U CN2142795Y CN 2142795 Y CN2142795 Y CN 2142795Y CN 92214191 CN92214191 CN 92214191 CN 92214191 U CN92214191 U CN 92214191U CN 2142795 Y CN2142795 Y CN 2142795Y
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- axle
- brake
- spring
- bearing
- brake shoe
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Abstract
The utility model relates to a rear axle for a light bus with high performance whose brake centralizes service braking and parking braking into integration and is provided with an automatic clearance adjuster. A semi-axis adopts a semi-floating type supporting structure and a two-stage sealing device; the adjustment of the pretightening force of the main drive gear bearing in a main retarder adopts an elastic distance bushing structure, and the flange of the main drive gear is connected with the main drive gear by adopting an involute spline. The utility model has the advantages of light volume, high performance, stable running, little noise and small vibration; the dynamic load of an emergency braking transmission shaft is small, the motion accuracy of a bearing is greatly enhanced, and the utility model is suitable for the requirement of high-velocity and smooth running.
Description
The utility model relates to a kind of vehicle transmission gear, specifically is Biodge device behind a kind of light bus.
Existing light bus, as 6450 series, its back axle part that still has some deficits:
1, the back axle drg only has service brake, and braking during standstill is established a place in addition, and structure is looser, does not establish automatic gap adjusting mechanism in the drg, glancing impact tightly, and the load of transmission shaft is heavier.
2, rear axle shaft full-floating supporting, the back axle quality is big, and sealing element has only primary seal, and sealing effectiveness is very unreliable.
3, the driving gear adjust the clearance is realized by adjusting disk in the main reduction gear, adjusts trouble, and driving gear is got in touch with flange and adopted rectangular spline to connect, and it is not high to connect precision.
The purpose of this utility model provides a kind of novel back Biodge device, the service brake of drg collection and the braking during standstill of this back Biodge device are one, be provided with automatic gap adjusting mechanism, rear axle shaft adopts the semi-floating supporting, sealing element seals with two-stage, main reduction gear gear-bearing gap automatic and adjustable connects the precision height, the back Biodge device of function admirable.
The purpose of this utility model is achieved in that the back Biodge device is by main reduction gear, diff, rear brake, parts such as half-rear axle and rear-axle casing are formed, and half-rear axle is contained in the rear-axle casing, rear brake and half-rear axle are connected as a single entity and left and right sides symmetrical configuration, and main reduction gear and diff are at the back axle middle part.
Rear brake is that collection service brake and braking during standstill are the drum brake mechanism of one, and be provided with automatic gap adjusting mechanism, service brake is two-way duo-servo action, before, back two brake shoe brake cheek are floating to be contained on the back-plate, the upper end is by the rest pin supporting of brake shoe brake cheek support, the lower end is by hoof crack adjustment nut, hoof crack adjusting lever, packing ring, the push rod floating support is adjusted in the hoof crack that hoof crack adjustment cover is formed, brake shoe brake cheek is by compression spring of brake shoe, press spring base, position-limited lever is pressed on the back-plate, left and right sides pull back spring leans against the tension of two brake shoe brake cheek on the rest pin, back-moving spring is again with before the spring, back brake shoe brake cheek tension leans against hoof crack adjustment nut, on the breach of hoof crack adjustment cover, rear braking subpump is fastened on the back-plate, and two ends push rod breach inserts the indentation, there of left and right sides brake shoe brake cheek respectively.
Braking during standstill is a mechanical type, the braking during standstill arm the back brake shoe brake cheek between the back-plate, its upper end connects with pin with brake shoe brake cheek upper end, back, the lower end connects with braking during standstill manipulating wire rope, steel rope overcoat pull back spring, there is a breach at the middle part of braking during standstill arm, and an end of braking during standstill slurcam inserts in the breach, the other end inserts in the breach of fore brake, and the push pedal spring is equipped with in the push pedal outside automatically.
The automatic gap adjusting mechanism of rear brake is a phase step type, self-gap-regulating extension spring and spring bracket stay cord upper end suspension ring are enclosed within on the cylindrical of rest pin of inner brake block support, the lower end of support links to each other with the automatic gap adjusting wire spring, spring bracket stay cord middle part leans against in the arch groove of the steel rope guide plate on the brake shoe brake cheek of back, and spring bracket links to each other with the hole of dialling the middle and upper part of plate automatically through the hook of self-regulated wire spring.Automatically dial the plate left end and insert between the flange ratchet of adjusting screw rod in the hoof crack, right-hand member links to each other with the back brake shoe brake cheek by set pin, dials the plate pull back spring automatically and pushes down group plate and insert between ratchet all the time.
The sealing arrangement of this back axle adopts the two-stage sealing, the first order is the oily spool type of retaining, keep off oily reel at axle side gear between the axle bearing, keep off oily reel outer rim and be bumped in the rear-axle casing, endoporus inserts semiaxis, the second stage is axle-shaft oil seal, axle-shaft oil seal is positioned at the inboard of axle bearing, lip to the inside, the outside is by axle bearing, the outer ring of axle-shaft oil seal is quiet to be fitted in the rear-axle casing flange endoporus at rear-axle casing two ends, and inner ring is enclosed within on the semiaxis back-up ring.
The semi-floating structure is adopted in the semiaxis supporting, semiaxis is inner to be connect with invoice serration and axle side gear endoporus, the outer end tire bolt, the counterbore screw connects with Back-braking drum, semiaxis directly is bearing in axle bearing with axle bearing and covers, bearing cap shim and rear-axle casing flange Bolt Connection, axle bearing is fixed on the semiaxis by end ring, back-up ring jump ring.
In the main reduction gear, the adjustment of main drive gear bearing play is that the collapsible dist collar structure is adopted in the adjustment of predetermincd tension, spacer is the waveform swivel, pack in the final drive casing, between the forward and backward bearing of driving gear, inner hole sleeve is gone on the axle of driving gear, adopts invoice serration to connect between driving gear flange and driving gear.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is this back axle equipments overall structure scheme drawing.
Fig. 2～7 are the rear brake structural representation, and wherein Fig. 2 is side-looking, and Fig. 3 is main looking, and Fig. 4 rotates for B-B for A-A rotation, Fig. 5, and Fig. 6 is that C-C rotates, Fig. 7 be K to.
Fig. 8 is sealing arrangement and semiaxis supporting structure scheme drawing.
Fig. 9-10 is main drive gear bearing float setting and driving gear flange connection scheme drawing, and wherein Fig. 9 is the A-A section-drawing.
Accompanying drawing has provided an embodiment of the present utility model, should be used as CD645A type passenger vehicle back axle by the back Biodge device in the present embodiment.
With reference to Fig. 1, this back Biodge device is by main reduction gear 33, diff 34, and rear brake 30, half-rear axle 31, rear-axle casing 32 parts such as grade are formed.Semiaxis 31 is contained in the rear-axle casing, and rear brake 30 is connected as a single entity and left and right sides symmetrical configuration with half-rear axle, and main reduction gear 33 and diff 34 are at the back axle middle part.
With reference to Fig. 2～7, among the figure: 1 steel wire guide plate, 2 brake shoe brake cheek back-up rings, 3 braking during standstill push pedals, 4 rear braking subpumps, 5 pull back springs, 6 push pedal springs, 7 fore brakes, 8 back back-plate band brake hoof rack assemblies, 9 brake wheels, 10 compression spring of brake shoe, 11 brake shoe brake cheek wedges, 12 position-limited levers, the auxiliary extension spring hanger of 13 back brake shoe brake cheek adjustment, 14 back-plates, 15 adjust hole glue blocks up 16 back-moving springs, 17 hoof crack adjustment nuies, screw rod is adjusted in 18 hoof cracks, 19 braking during standstill manipulating wire ropes, 20 packing rings, 21 hoof crack adjustment covers, 22 from alloting plate, 23 dial the plate pull back spring automatically, the auxiliary extension spring of 24 back brake shoe brake cheek adjustment, 25 self-regulated wire springs, 26 self-gap-regulating extension spring and spring brackets, 27 set pins one are dialled plate automatically, 28 back brake shoe brake cheek, 29 braking during standstill arms.
Rear brake is that collection service brake and braking during standstill are the drum brake mechanism of one, is provided with automatic gap adjusting mechanism.
Service brake is two-way duo-servo action, it is fluid pressure type, front and back two brake shoe brake cheek 7,28 have that friction lining is floating to be contained on the back-plate 14, its upper end is by the rest pin supporting of brake shoe brake cheek support 8, the lower end is by hoof crack adjustment nut 17, screw rod 18 is adjusted in the hoof crack, the push rod floating support is adjusted in the hoof crack that packing ring 20 and hoof crack adjustment cover 21 are formed, brake shoe brake cheek is by compression spring of brake shoe 10, press spring base 11, position-limited lever 12 is pressed on the back-plate, left and right sides pull back spring 5 is with brake shoe brake cheek 7,28 tensions lean against on the rest pin, before back-moving spring 16 is incited somebody to action again, back brake shoe brake cheek tension leans against hoof crack adjustment nut 17, on the breach of hoof crack adjustment cover 21, rear braking subpump 4 is fastened on the back-plate, and two ends push rod breach inserts left and right sides brake shoe brake cheek indentation, there respectively.
Braking during standstill is a mechanical type, promptly hand braking, braking during standstill arm 29 is between the brake shoe brake cheek 7 main brake base plates 14 of back, its upper end is linked together with pin with brake shoe brake cheek 28 upper ends, back, the lower end connects with braking during standstill manipulating wire rope 19, the steel rope overcoat pull back spring 5 guarantee to use after the Parking braking during standstill arm 29 can self-returns, there is a breach Parking robot arm middle and upper part, braking during standstill push pedal 3 one ends that are arranged in brake cylinder 4 bottoms insert breach, the other end inserts in the breach of fore brake 7, push pedal spring 6 is equipped with in braking push pedal outside, to be used to help braking during standstill arm return.
Braking during standstill is by pulling braking during standstill manipulating wire rope 19, the cw swing is done in steel rope pulling brake control lever 29 lower ends, brake control lever promotes braking during standstill push pedal 3 and presses to brake wheel 9 with fore brake 7, push pedal stop motion then, so, the brake control lever upper end begins to move to right, and by pin back brake shoe brake cheek 28 is pressed to brake wheel 9, thereby realizes the braking during standstill process.
Newly-increased automatic gap adjusting mechanism is a phase step type automatic gap adjusting mechanism, it is repeatedly realizing automatic gap adjusting after the reversing braking, the stay cord of self-gap-regulating extension spring and spring bracket 26 upper end suspension ring are enclosed within on the cylindrical of rest pin of brake shoe brake cheek support 8, support 26 lower ends link to each other with self-regulated wire spring 25, in the arch groove on the steel wire guide plate 1 after spring bracket 26 stay cords middle part leans against on the brake shoe brake cheek 28, support 26 links to each other with the hole of the middle and upper part of alloting plate 22 certainly through the hook of automatic wire spring 25, insert between the flange ratchet of adjusting screw rod 18 in the hoof crack from alloting the plate left end, allot the plate right-hand member certainly by set pin 27 and back brake shoe brake cheek hinge.Automatic group plate pull back spring 23 is pushed down group plate and is made it to remain between the insertion ratchet.
At the reversing glancing impact, back brake shoe brake cheek 27 leaves the rest pin of brake shoe brake cheek support, and move down, driving spring bracket 28 up moves, to spur from alloting plate by spring 25 and to clockwise rotate around set pin 26, rotate thereby stir the ratchet of adjusting screw rod 18 in the hoof crack, thus the self-adjusting brake gap.
With reference to Fig. 8.
Sealing arrangement adopts two-stage, the first order is the oily spool type of retaining, keep off oily reel 42 at axle side gear 43 between the axle bearing 37, near axle side gear, keeping off oily reel 42 outer rims is bumped in rear-axle casing 32 bodies, insert semiaxis 31 in the reel endoporus, second stage sealing is final sealing, adopting skeleton oil proof rubber seal ring is axle-shaft oil seal 38, axle-shaft oil seal 38 is positioned at the inboard of axle bearing 37, and lip to the inside, the outside is by axle bearing 37, and the axle-shaft oil seal outer ring is quiet to be fitted in rear-axle casing flange 41 endoporus at rear-axle casing two ends, and the axle-shaft oil seal inner hole sleeve is on the semiaxis back-up ring, first order sealing can be blocked a large amount of lubricating oils and pour into final sealing member, has guaranteed the leak free reliability thereby make final sealing member only bear less oil pressure.
Semiaxis adopts the semi-floating supporting structure, the semiaxis 31 inner invoice serrations of using connect with axle side gear 43, outer end tire bolt 35, counterbore screw 36 connects with Back-braking drum 9, semiaxis 31 usefulness axle bearings 37 directly are bearing on the axle bearing lid 44, and bearing cap shim and rear-axle casing flange 41 are used Bolt Connection, by axle bearing back-up ring 39, back-up ring jump ring 40 is fixed on axle bearing on the semiaxis, and has determined the axial location of semiaxis in rear-axle casing with this.
With reference to Fig. 9,10,45 nuts among the figure, 46 packing rings, 47 driving gear flanges, 48 pinion seals, 49 driving gear rear bearings, 50 elasticity waveform spacers, 51 main drive gear bearings, 52 final drive casings, 53 driving gears.
In the main reduction gear, the main drive gear bearing float setting has adopted the collapsible dist collar structure, spacer 50 is the waveform swivel, pack in final drive casing 52 holes, between driving gear front and back bearings 49,51, inner hole sleeve is gone on the axle of driving gear 53, this structure can make the maximum axial supporting power keep in the scope of less variation in the axial deformation amplitude of broad, to satisfy requirement to bearing pre-fastening, guarantee that bearing clearance is in optimum value, like this, improve the kinematic accuracy of bearing, guaranteed the meshing gap of wheel and the kinematic accuracy of master, passive tooth.
Referring to Fig. 9 A-A face, driving gear flange 47 is positioned at the outside of driving gear rear bearing 49,53 fine structures that adopt invoice serration to connect of the endoporus of flange 47 and driving gear, and it is very little to connect the gap between the two, and neutrality is connected the precision height well.
The main technical details of present embodiment is as follows:
1. track rear is 1350～1500 millimeters
2. the assembly quality is 80～90 kilograms
3. fully loaded back axle load≤16660 newton
4. adapt to 120～150 kilometers/hour of maximum speed
5. rear-axle gear drive is than 4.55～5.50
6. adapt to wheel rim, tire
Tire 205/75R15
Tire 6JJ(51/2JJ)
7. lead the distance of the driving gear misalignment rear axle center of symmetry that slows down:
0～75mm
8. Back-braking drum internal orifice dimension (brake shoe brake cheek external diameter) φ 228～φ 280
9. back axle steel plate holder width between centers 900～1200mm
10. rear-axle casing pipe outside diameter φ 70～φ 80mm partly
11. rear braking subpump cylinder diameter φ 19～25.4mm
The utlity model has following good effect:
1. rear brake integrates service brake and parking braking, and compact conformation is easy to use, braking ability is good, and when the newly-increased automatic crack of automatic accent device mechanism can make emergency brake, the dynamic load of power transmission shaft reduced, thereby reduce automobile vibration in the process of moving, noise adapts at a high speed needs.
2. employing secondary seal has guaranteed the sealing high performance requirements.
3. the semifloating axle shaft supporting structure has alleviated the rear axle assy quality greatly, thereby has reduced the nonspring carried mass of automobile, has improved the ride comfort of automobile.
4. the elastic waveform stereoscopic spacer structure is adjusted the driving gear play, fully satisfies the requirement of bearing pre-fastening, adopts the involute yarn to connect between driving gear flange and driving gear, and the bearing movable precision increases substantially.
5. this back axle performance is good, uses extensively, is specially adapted to the various vehicles of 6450 series.
Claims (2)
1, Biodge device behind a kind of light bus of forming by main reduction gear 33, diff 34, rear brake 30, half-rear axle 31 and rear-axle casing 32, semiaxis 31 is contained in the rear-axle casing 32, rear brake 30 is connected as a single entity and left and right sides symmetrical configuration with semiaxis 31, main reduction gear 33 and diff 34 is characterized in that at the back axle middle part:
1. rear brake is that collection service brake and braking during standstill are the drum brake mechanism of one, and is provided with the automatic gap adjusting structure,
(1) service brake is two-way duo-servo action, front and back two brake shoe brake cheek 7,28 are contained on the back-plate 14, the upper end is by the rest pin supporting of brake shoe brake cheek support 8, the lower end is by hoof crack adjustment nut 17, screw rod 18 is adjusted in the hoof crack, packing ring 20, the push rod floating support is adjusted in the hoof crack that hoof crack adjustment cover 21 is formed, brake shoe brake cheek is by compression spring of brake shoe 10, press spring base 11, position-limited lever 12 is pressed on the back-plate 14, left and right sides pull back spring 5 is with brake shoe brake cheek 7,28 tensions lean against on the rest pin, back-moving spring 16 leans against hoof crack adjustment nut 17 with the tension of front and back brake shoe brake cheek again, on the breach of hoof crack adjustment cover 21, rear braking subpump 4 is fastened at braking the end, two ends push rod breach inserts left and right sides brake shoe brake cheek indentation, there respectively
(2) braking during standstill is a mechanical type, braking during standstill arm 29 at fore brake 7 between the base plate, its upper end connects with pin with brake shoe brake cheek 28 upper ends, back, the lower end connects with braking during standstill manipulating wire rope 19, steel rope overcoat pull back spring 5, and there is a breach middle and upper part of braking during standstill arm, one end of braking during standstill slurcam 3 inserts in the breach, the other end inserts in the breach of fore brake 7, and push pedal spring 6 is equipped with in push pedal 3 outsides automatically
(3) automatic gap adjusting mechanism is a phase step type, the stay cord of self-gap-regulating extension spring and spring bracket 26 upper end suspension ring are enclosed within on the cylindrical of rest pin of inner brake block support 8, the lower end of support 26 links to each other with self-gap-regulating wire spring 25, spring bracket 26 stay cords middle part leans against in the arch groove of the steel wire guide plate 1 on the brake shoe brake cheek 28 of back, support 26 links to each other with the hole of dialling the middle and upper part of plate 22 automatically through the hook of self-regulated wire spring 25, automatically dialling plate 22 left ends inserts between the flange ratchet of adjusting screw rod 18 in the hoof crack, right-hand member links to each other with the back brake shoe brake cheek by set pin 27, push down and dial plate and make and dial plate and insert between ratchet all the time from alloting plate pull back spring 23
2. two-stage seals and the semifloating axle shaft supporting structure,
(1) sealing arrangement increases to two-stage, the first order adopts the oily spool type of retaining, keep off oily reel 42 at axle side gear 43 between the bearing 37, its outer rim is bumped in rear-axle casing 32 bodies, endoporus inserts semiaxis 31, axle-shaft oil seal is adopted in the second stage, axle-shaft oil seal is positioned at the inboard of axle bearing 37, and the outside is by axle bearing, and the axle-shaft oil seal outer ring is quiet to be fitted in rear-axle casing flange 41 endoporus at rear-axle casing two ends, inner ring is enclosed within on the semiaxis back-up ring
(2) semiaxis is inner connects with axle side gear 43 endoporus with invoice serration, outer end tire bolt 35, counterbore screw 36 connects with Back-braking drum 9, semiaxis directly is bearing in axle bearing with axle bearing 37 and covers, bearing cap shim and rear-axle casing flange 41 are used Bolt Connection, axle bearing is by end ring 39, and back-up ring jump ring 40 is fixed on the semiaxis 31
3. the collapsible dist collar structure is adopted in the adjustment of the main drive gear bearing play of main reduction gear 33, and spacer 50 is the waveform swivel, and in the final drive casing of packing into, between driving gear front and back bearings 51,49, inner hole sleeve is gone on the axle of driving gear.
2, Biodge device behind the light bus as claimed in claim 1 is characterized in that: driving gear flange 47 adopts invoice serration to connect with 53 of driving gears in the main reduction gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214191 CN2142795Y (en) | 1992-02-25 | 1992-02-25 | Rear axle of light bus with high performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214191 CN2142795Y (en) | 1992-02-25 | 1992-02-25 | Rear axle of light bus with high performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2142795Y true CN2142795Y (en) | 1993-09-29 |
Family
ID=33763689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92214191 Expired - Lifetime CN2142795Y (en) | 1992-02-25 | 1992-02-25 | Rear axle of light bus with high performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2142795Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022460A (en) * | 2010-11-02 | 2011-04-20 | 威海市九跃车桥有限公司 | Bidirectional self-energizing brake |
| CN102632873A (en) * | 2012-03-27 | 2012-08-15 | 奇瑞汽车股份有限公司 | Combined braking bottom plate of automotive drum brake and disassembling and assembling method thereof |
| CN102935847A (en) * | 2012-02-21 | 2013-02-20 | 奇瑞汽车股份有限公司 | Electronic running brake and electronic parking brake integrated control system and control method thereof |
| CN102990726A (en) * | 2011-09-17 | 2013-03-27 | 徐志义 | Drilling bit |
-
1992
- 1992-02-25 CN CN 92214191 patent/CN2142795Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022460A (en) * | 2010-11-02 | 2011-04-20 | 威海市九跃车桥有限公司 | Bidirectional self-energizing brake |
| CN102990726A (en) * | 2011-09-17 | 2013-03-27 | 徐志义 | Drilling bit |
| CN102935847A (en) * | 2012-02-21 | 2013-02-20 | 奇瑞汽车股份有限公司 | Electronic running brake and electronic parking brake integrated control system and control method thereof |
| CN102935847B (en) * | 2012-02-21 | 2015-01-28 | 奇瑞汽车股份有限公司 | Electronic running brake and electronic parking brake integrated control system and control method thereof |
| CN102632873A (en) * | 2012-03-27 | 2012-08-15 | 奇瑞汽车股份有限公司 | Combined braking bottom plate of automotive drum brake and disassembling and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |