CN2352391Y - Automobile change-speed gearing - Google Patents

Abstract

The utility model relates to an automobile speed changer which is characterized in that lock ring type synchronizers are respectively installed between a first shaft gear and a second shaft fifth speed gear, a second shaft second speed gear and a second shaft third speed gear, and a first shaft first speed gear and a second shaft reverse gear, and the lock ring type synchronizer is composed of a gear hub, a gear sleeve, a gear ring, a sliding block, and a square wire spring. Simultaneously, the gear widths are enlarged and the speed ratio is adjusted, so that the load capacity of the automobile speed changer is improved, and the utility model has the advantages of compact structure, simple and flexible gear shifting, and favorable operating performance.

Description

A kind of Automotive transmission

The utility model relates to a kind of automobile speed-changing device.

6700 passenger vehicles and the matching used LC5797 change-speed box of 1060 lorries sold on the present market, belong to imitative Japan Isuzu Motors MSA-5P Automotive transmission product, its load-carrying capacity is 255Nm, under China present road shape and vehicle operation situation, be matched in 6700 passenger vehicles and 1060 truck carrying abilities are slightly inadequate, the reverse gear maneuvering performance is not good enough, and gear shift is inadequately through just flexible.

The purpose of this utility model provides a kind of later-model Automotive transmission, and its load-carrying capacity improves relatively, and the gear shift light and flexible, and maneuvering performance is good.

The purpose of this utility model is achieved through the following technical solutions.

A kind of Automotive transmission, one axle assembly is arranged, two axle assemblies, countershaft assembly, the clutch-bell cover assembly, last cap assembly, rear cover assembly, casing, it is characterized in that between a shaft gear and two five grades of gears, between two seconds speed gear and two 3rd gears, between two one grade of gears and two reverse gearwheels the lock ring type synchro is housed respectively, this lock ring type synchro is by the tooth hub, the tooth cover, ring gear, slide block, side's silk spring is formed, tooth hub and tooth cover pass through spline fitted, the tooth cover can be free to slide on the tooth hub, adorns a slide block respectively in three grooves of tooth hub, and three slide blocks are abutted against in the R groove of tooth cover by two side's silk spring jack-up that are contained in the counterbore of tooth hub both sides.The two ends of slide block place in the square groove of two ring gears, and synchro splits to cooperate by the involute flower and is assemblied on two, the ring gear at two ends can be respectively on the adjacent gear soldered tooth conical surface small distance move.

Two 3rd gears are assemblied on two by needle bearing.

Between needle bearing in two reverse gearwheels and two lining is arranged.

Wherein, an axle assembly is contained in the front end of casing by bearing, serves as input shaft, and the front end of two axle assemblies is bearing on the needle bearing of an axle assembly, and the rear end is bearing in the rear end of casing, fully output shaft by bearing.The countershaft assembly front and back end is bearing in respectively on two bearings of casing, it cogs respectively and an axle assembly, each grade tooth engagement on two axle assemblies, constitute the countershaft assembly, the clutch-bell cover assembly is contained in the front end of casing, with an axle assembly axial location, arrangement of clutch is installed in it, by its front end transmission assembly is fixed to the clutch end of driving engine, rear cover assembly is contained in the rear end of casing, with two axle assemblies, the countershaft assembly axial location, driving gear speedometer and ring gear are equipped with in the inside, the rear end can be fixed for hand brake, and last cap assembly is contained in the top of casing, is the shift control system assembly.

Transmission is with a shaft gear that moves through an axle assembly of driving engine and the engagement of the constant-mesh tooth on the tween drive shaft, countershaft assembly is passed in motion, the countershaft fifth speed gear of countershaft assembly, third-speed gear of intermediate shaft, secondary gear of intermediate shaft, one grade of gear on the tween drive shaft, with two on two five grades of gears of same shifting gear, two 3rd gears, two seconds speed gear, two one grade of gears are meshed, reverse gearwheel on the tween drive shaft and the engagement of independent reverse gearwheel, independent reverse gearwheel meshes with two reverse gearwheels again simultaneously, during neutral gear, gear idle running, during gear shift, by handle cap assembly make three be parallel to each other and interlocking one, the reverse gear fork shaft, two, the third gear fork shaft, four, five grades of fork shafts seesaw, drive one respectively, the reverse gear fork, two, the third gear fork, four, five grades of forks seesaw, and promote synchronizer gear sleeve, and synchro is done mutually.

Move forward and backward rightly when control fork promotes the tooth cover, the tooth cover drives slide block and moves, and slide block promotes ring gear again and moves on the conical surface of gear, by rubbing effect, makes rotating speed moment of synchro and gear approaching, and the tooth cover is crossed slide block then, the realization classless shifting.After the gear shift, the gear of corresponding gear will move (power), pass to two by synchronizer gear sleeve, again by with two splined two shaft flange dishes are spread out of motion.

Compare with existing Japan Isuzu Motors MSA-5P Automotive transmission, the utility model is simple in structure, and load-carrying capacity improves, and gear shift is light flexibly, and maneuvering performance is preferable.

Below in conjunction with accompanying drawing,, the utility model is further described by embodiment.

Fig. 1 is the utility model structural representation.

Fig. 2 is one of the utility model, two axle construction scheme drawings.

Fig. 3 is the utility model structure A part scheme drawing.

Fig. 4 is the utility model structure B part scheme drawing.

Fig. 5 is the utility model structure C part scheme drawing.

Fig. 6 is the utility model structure D part scheme drawing.

Embodiment:

The utility model is improved by Japan Isuzu Motors MSA-5P Automotive transmission.Referring to Fig. 1～Fig. 6.Earlier number in the figure is done to explain one by one.I, one axle assembly, II, the clutch-bell cover assembly, III, last cap assembly, IV, two axle assemblies, V, rear cover assembly, VI, countershaft assembly, VII, casing, 1, two, 2, thrust washer, 3, lining, 4, needle bearing, 5, two reverse gearwheels, 6, synchro converter ring, 7, side's silk spring, 8, synchromesh gear hub, 9, the tooth cover, 10, synchro converter ring, 11, two one grade of gears, 12, two seconds speed gear, 13, synchro converter ring, 14, side's silk spring, 15, the baulk ring slide block, 16, the tooth cover, 17, synchromesh gear hub, 18, the location snap ring, 19, two 3rd gears, 20, space washer, 21, the location snap ring, 22, the location snap ring, 23, the tooth cover, 24, side's silk spring, 25, synchro converter ring, 26, two five grades of gears, 27, one, the reverse gear fork, 28, one, the reverse gear fork shaft, 29, two, the third gear fork shaft, 30, two, the third gear fork, 31, four, five grades of forks, 32, four, five grades of fork shafts, 33, constant mesh gear, 34, countershaft fifth speed gear, 35, third-speed gear of intermediate shaft, 36, secondary gear of intermediate shaft, 37, tween drive shaft, 38, independent reverse gearwheel, 39, driving gear speedometer, 40, the mileage meter ring gear, 41, two shaft flange dishes, 42, synchro, 43, synchro, 44, synchro, 45, one grade of gear of tween drive shaft, 46, countershaft reversing gear, 47, soldered tooth.One axle assembly (I) is contained in the front end of casing (VII) by 50309 bearings, serve as input shaft, the front end of two axle assemblies (IV) is bearing on the needle bearing in the axle assembly (I), and the rear end is bearing in the rear end of casing (VII) by 50309 bearings, serves as output shaft.Countershaft assembly (VI) front and back end is bearing in respectively on two 50307 bearings of casing, and the gear on it is meshed with each grade gear on an axle assembly (I) two axle assemblies (IV) respectively, is the countershaft assembly.Clutch-bell cover assembly (II), be contained in the front end of casing (VII), with an axle assembly (I) axial location, arrangement of clutch is installed in it, by its front end transmission assembly is fixed to the clutch end of driving engine, rear cover assembly (V) is contained in the rear end of casing (VII), with two axle assemblies (IV), countershaft assembly (VI) axial location, the inside are equipped with driving gear speedometer (39) and ring gear (40), and the rear end can be fixed for hand brake.Last cap assembly (III) is contained in the top of casing (VII), is the shift control system assembly.

Between one shaft gear and the two five grades gears (26), between two seconds speed gear (12) and two 3rd gears (19), between two one grade gear (11) and two reverse gearwheels (5) lock ring type synchro (42 is housed respectively, 43,44), transmission is with a shaft gear and constant mesh gear (33) tween drive shaft on the engagement of the motion of driving engine (power) by an axle assembly (I), countershaft assembly (VI) is passed in motion, the countershaft fifth speed gear (34) of countershaft assembly (VI), third-speed gear of intermediate shaft (35), secondary gear of intermediate shaft (36), one grade of gear (45) on the tween drive shaft (37) with two on two five grades gears of same shifting gear (26) and two 3rd gears (19), two seconds speed gear (12), two one grade gear (11) is meshed, reverse gearwheel (46) on the tween drive shaft (37) and independent reverse gearwheel (38) engagement, independent reverse gearwheel (38) meshes with two reverse gearwheels (5) again simultaneously.During neutral gear, gear idle running.During gear shift, by handle cap assembly (III) make three be parallel to each other and interlocking one, reverse gear fork shaft (28), two, third gear fork shaft (29), four, five grades of fork shafts (32) seesaw, drive one respectively, reverse gear fork (27), two, third gear fork (30), four, five grades of forks (31) seesaw, promote synchronizer gear sleeve, make synchro work.

The lock ring type synchro is made up of tooth hub, tooth cover, ring gear, slide block, side's silk spring, tooth hub and tooth cover pass through spline fitted, the tooth cover can be free to slide on the tooth hub, adorning a cunning in three grooves of tooth hub respectively determines, three slide blocks are abutted against in the R groove of tooth cover by two side's silk spring jack-up that are contained in the counterbore of tooth hub both sides, the two ends of slide block place in the square groove of two ring gears, synchro cooperates by invoice serration and is assemblied on two, the ring gear at two ends can be respectively on the adjacent gear soldered tooth conical surface small distance move.When control fork manipulation tooth cover moved forward and backward, the tooth cover drove slide block and moves, and slide block promotes ring gear again and moves on the conical surface of gear, by rubbing effect, the rotating speed moment that makes synchro and gear, the tooth cover was crossed slide block then near (synchronously), realized classless shifting.After the gear shift, the gear of corresponding gear will move (power), pass to two (1) by synchronizer gear sleeve, again by with two splined two shaft flange dishes (41) are spread out of motion.

For under width between centers unmodified situation, improve the load-carrying capacity of change-speed box, with casing (VII) lengthening 21.5mm, the facewidth of gear is increased by 0.5～3mm respectively do not wait, the speed ratio of across-the-board regulation simultaneously directly increases the load-carrying capacity of each gear.Adapt therewith, two axle assemblies (IV) block bearing of casing (VII) rear end adopts 50309, the non-shelves of the preceding supporting of the countershaft assembly of casing front lower place (IV) bearing adopts 50307, the spline modulus that one axle assembly (I) cooperates with clutch disk is DP20/40, and it is M12 that two shaft flange dishes (41) are gone up attachment bolt.Two five grades gears (26) cooperate with axle by the hole, be contained on two (1) and be milled with on the step of flat gesture, left end is synchro (42), and right-hand member is two 3rd gears (19), and the pillow block rank end face of the right side of tooth hub (22) and two (1) two 3rd gears in upper end (19) is as its locating surface.Only guarantee to adorn on two (1) two five grades gears (26) length of bench and can guarantee its endplay.Two 3rd gears (19) are assemblied on two (1) by needle bearing, left end is two five grades gears (26), right-hand member is synchro (43), axially adjust endplay with snap ring by a location packing ring and axle, two reverse gearwheels (5) are assemblied in before the bearing guard of two (1), needs because of structure and location, between needle bearing (4) and two (1), add a lining (3), on this basis, the soldered tooth (47) of the newly-increased band of two reverse gearwheels (5) cone of friction, reverse gear, one grade are synchronous dislodging shelves, have improved maneuvering performance.

The utility model has the advantages that compact conformation, the gear shift light and flexible is matched in 6700 series Passenger vehicle and 1060 serial lorries are safer reliable.

Claims (3)

1, a kind of Automotive transmission, one axle assembly is arranged, two axle assemblies, countershaft assembly, the clutch-bell cover assembly, last cap assembly, rear cover assembly, casing is characterized in that between a shaft gear and two five grades of gears, between two seconds speed gear and two 3rd gears, between two one grade of gears and two reverse gearwheels the lock ring type synchro is housed respectively, this lock ring type synchro is by the tooth hub, the tooth cover, ring gear, slide block, side's silk spring is formed, and tooth hub and tooth cover pass through spline fitted, the tooth cover can be free to slide on the tooth hub, adorn a slide block respectively in three grooves of tooth hub, three slide blocks are abutted against in the R groove of tooth cover by two side's silk spring jack-up that are contained in the counterbore of tooth hub both sides, and the two ends of slide block place in the square groove of two ring gears, synchro cooperates by invoice serration and is assemblied on two, the ring gear at two ends can be respectively on the adjacent gear soldered tooth conical surface small distance move.

2, a kind of Automotive transmission according to claim 1 is characterized in that two 3rd gears are assemblied on two by needle bearing.

3, according to claim 1 fast a kind of Automotive transmission, it is characterized in that between needle bearing in two reverse gearwheels and two lining being arranged.

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