CN201281111Y - Automobile transmission - Google Patents

Abstract

The utility model relates to an automobile speed changer, comprising a shell body, a shaft 1, a shaft 2, a middle shaft, a clutch shell and a gear-shifting control mechanism. The clutch shell and a front cover of the shaft 1 are two independent parts; a main six-tooth, a main four-tooth, a main three-tooth, a main two-tooth, a main one-tooth and a main reverse-tooth are sequentially arranged on a main shaft; a middle shaft main-tooth gear, a middle shaft six-tooth gear, a four-tooth gear and a three-tooth gear are sequentially arranged on the middle shaft; the middle shaft six-tooth gear, the four-tooth gear and the three-tooth gear are matched with the middle shaft by a flat key in an interference manner; the gear-shifting control mechanism is composed of two sub-assemblies, namely an upper cover and a top cover; a self-locking piece and an interlocking piece are arranged in the upper cover, a shifting block, a shifting fork and a gear-shifting head are arranged in the top cover, and a resistance pin and a resistance spring are arranged in the cavity of the shifting block. The automobile speed changer has the beneficial effects that the automobile speed changer enlarges the changing range of the torque and rotating speed of a driving wheel, can adapt to constantly-changed driving conditions, and can lead an engine to work under favorable working conditions.

Description

A kind of automotive transmission

Technical field

The utility model relates to a kind of transmission device of automobile, relates in particular to a kind of automotive transmission.

Background technique

At present, all there is ripe product in domestic main speed changer production company in the 65-85kgfm scope, and fixing supporting market is all arranged at home.As Harbin gearbox factory, CA5-70, CA6-80, series such as CA6-85, its main supporting the First Automobile Group follows the middle bayonet lock of the First Automobile Group to sell, and the recoverable amount in market is also bigger, but ratio coverage that should the series speed changer is limited, and advantage is not obvious.

Yangze river and Huai river company goes through 2 years leans and has researched and developed middle card " person of showing sword ", and this year is official listing, and the speed changer of its collocation is two speed changer of a vapour Eton gearbox Co., Ltd, and its advanced degree is very high, but price is higher; The MLD 6Q speed changer of Japan Isuzu Motors company is the product of existing production, formerly be not less than the speed changer on " showing sword " on the process degree, the speed ratio coverage area is bigger, (6.720～0.764), specified input torque 668Nm, but ratio coverage is limited, can only satisfy the use of card portion vehicle in the Yangze river and Huai river " person of showing sword ".

The model utility content

The purpose of this utility model is that the MLD 6Q speed changer with Japan Isuzu Motors company is the design source, and the special-purpose gearbox of exploitation " the show sword person " of moment of torsion about 76kgfm is to overcome the existing deficiency that transmission gear ratio is limited in scope, price is higher.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of automotive transmission, comprise housing, one, two and jack shaft, clutch housing and selector device, described clutch housing and a protecgulum are two independent parts, be provided with main six teeth on the main shaft successively, main four teeth, main three teeth, main bidentate, a main tooth and main pawl, described master's one tooth, main bidentate, main three teeth, main four teeth and main six teeth all be body and the branch body structure that welds by spline fitted and for electron beam welding in conjunction with ring gear, described main pawl is a monolithic construction, and the reverse gear tooth is the duplex toothing, described one grade, second gear, third gear and fourth gear identical in conjunction with ring gear, be provided with jack shaft master tooth shelves on the described jack shaft successively, jack shaft six tooth shelves, four tooth shelves, three tooth shelves, described jack shaft six tooth shelves, four tooth shelves and three tooth shelves are by flat key and jack shaft interference fit; Described selector device is made up of loam cake and two sub-assemblys of top cover, is provided with self-locking and interlocking part in the described loam cake, is provided with shifting block, shift fork and gear shift head in the described top cover, and described shifting block is provided with resistance pin and resistance spring in the chamber; Shifting block, shift fork connect with declutch shift shaft by clamping bolt; Described gear shift head connects with shift shaft by spline, and by the fixing axial position of snap ring.

A kind of automotive transmission beneficial effect described in the utility model is: enlarged driving wheel torque and change in rotational speed scope, can adapt to the driving conditions that often changes, motor is worked under the operating mode of favourable (power is higher and oil consumption is lower).

Description of drawings

Fig. 1 is the structure sectional view of the described a kind of automotive transmission of the utility model embodiment.

Among the figure:

1, housing; 2, an axle assembly; 3, two; 4, jack shaft; 5, clutch housing; 6, lead a tooth; 7, main bidentate; 8, lead three teeth; 9, lead four teeth; 10, lead six teeth; 11, main pawl; 12, main tooth in; 13, six teeth in; 14, four teeth in; 15, three teeth in; 16, flat key; 17, loam cake; 18, top cover; 19, self-locking and interlocking part; 20, shifting block; 21, shift fork; 22, gear shift head; 23, declutch shift shaft; 24, shift shaft.

Embodiment

As shown in Figure 1, the described a kind of automotive transmission of the utility model embodiment, comprise housing 1, one axle assembly 2, two 3 and jack shaft 4, clutch housing 5 and selector device, described clutch housing 5 and a protecgulum are two independent parts, be provided with main six teeth 10 on the described main shaft successively, main four teeth 9, main three teeth 8, main bidentate 7, a main tooth 6 and main pawl 11, described master's one tooth 6, main bidentate 7, main three teeth 8, main four teeth 9 and main six teeth 10 all be body and the branch body structure that welds by spline fitted and for electron beam welding in conjunction with ring gear, described main pawl 11 is a monolithic construction, and the reverse gear tooth is the duplex toothing, described one grade, second gear, third gear and fourth gear identical in conjunction with ring gear.

Main tooth 12 in being provided with successively on the described jack shaft 16, in six teeth 13, in four teeth 14, in three teeth 15, described in six teeth 13, in four teeth 14 and in three teeth 15 by flat key 16 and jack shaft 4 interference fit; Described selector device is made up of loam cake 17 and 18 two sub-assemblys of top cover, is provided with self-locking and interlocking part 19 in the described loam cake 17, is provided with shifting block 20, shift fork 21 and gear shift 22 in the described top cover, and described shifting block is provided with resistance pin and resistance spring 26 in 20 chambeies; Shifting block 20, shift fork 21 connect with declutch shift shaft 23 by clamping bolt; Described gear shift 22 connects with shift shaft 24 by spline, and by the fixing axial position of snap ring.

In the utility model, housing, clutch housing and a protecgulum are ironcasting, loam cake and top cover are Al-alloy parts, belong to traditional triple axle structure, have 6 forward gearss and 1 reverse gear, the gear form is: 1/2 grade, 3/4 grade, 5/6 grade and reverse gear, and selecting gear shift is the double rod type structure, is not with power-assisted shift; Can carry out power taking (power output) from countershaft-gear, the utility model adopts push type detaching mechanism, and separating mechanism takes the mode of regular grease up lubricated.

One of this speed changer, two axle bearings are roller bearing, and model is respectively NUPK312NXU1, NUPK311NU1, NUPK310NU1 and 2211E, and two spindle nose bearings are no retainer solid matter needle bearing.

In the selector device, the self-locking of gear shift and interlocking function are finished by last cap assembly, and the gear selecting function is guaranteed that by top cover wherein the gear selecting resistance is realized by shifting block chamber internal resistance pin and resistance spring; 5/6 grade of gearshift mechanism with reverse gear takes the gap bridge form promptly to change by swing arm.

The motion principle of each grade is as follows:

One grade: motor → one spool → jack shaft → one grade gear pair → two (1/2 grade of synchronizer effect)

Second gear: motor → one spool → jack shaft → intermediate gear pair → two spool (1/2 grade of synchronizer effect)

Third gear: motor → one spool → jack shaft → three-range transmission pair → two spool (3/4 grade of synchronizer effect)

Fourth gear: motor → one spool → jack shaft → fourth gear pair → two spool (3/4 grade of synchronizer effect)

Five grades (direct high): motor → one spool → two (5/6 grade of synchronizer effect)

Six grades: motor → one spool → jack shaft → six step tooth wheel set → two spool (5/6 grade of synchronizer effect)

Reverse gear: motor → one spool → jack shaft → reverse gear tooth → reverse gear pair → two spool (effect of reverse gear synchronizer)

Wherein reverse gear and one grade is not for having synchronizing function in conjunction with the gear shift of tooth cover, and second gear, third gear and fourth gear are the lock ring type double-cone synchronizer, bores synchronizer for the lock ring type list for five grades, six grades.

Claims (1)

1, a kind of automotive transmission, comprise housing (1), one axle assembly (2), two (3) and jack shaft (4), clutch housing (5) and selector device, described clutch housing (5) and a protecgulum are two independent parts, it is characterized in that: be provided with main six teeth (10) on the described main shaft successively, main four teeth (9), main three teeth (8), main bidentate (7), a main tooth (6) and main pawl (11), described master's one tooth (6), main bidentate (7), main three teeth (8), main four teeth (9) and main six teeth (10) all be body and the branch body structure that welds by spline fitted and for electron beam welding in conjunction with ring gear, described main pawl (11) is a monolithic construction, the reverse gear tooth is the duplex toothing, described one grade, second gear, third gear and fourth gear identical in conjunction with ring gear; Main tooth (12) in being provided with successively on the described jack shaft (16), in six teeth (13), in four teeth (14), in three teeth (15), described in six teeth (13), in four teeth (14) and in three teeth (15) by flat key (16) and jack shaft (4) interference fit; Described selector device is made up of loam cake (17) and (18) two sub-assemblys of top cover, be provided with self-locking and interlocking part (19) in the described loam cake (17), be provided with shifting block (20), shift fork (21) and gear shift head (22) in the described top cover, be provided with resistance pin and resistance spring (26) in described shifting block (20) chamber; Shifting block (20), shift fork (21) connect with declutch shift shaft (23) by clamping bolt; Described gear shift head (22) connects with shift shaft (24) by spline, and by the fixing axial position of snap ring.

Images