CN2148025Y

CN2148025Y - Gear box having reverse gear for engine of motorcycle

Info

Publication number: CN2148025Y
Application number: CN 92217101
Authority: CN
Inventors: 谢兴文
Original assignee: Nanfang Power Machinery Co Ministry Of Aeronatics And Astronautics Industry (c
Current assignee: Nanfang Power Machinery Co Ministry Of Aeronatics And Astronautics Industry (c
Priority date: 1992-06-03
Filing date: 1992-06-03
Publication date: 1993-12-01
Anticipated expiration: 2002-06-03

Abstract

The utility model relates to a back action mechanism and a vack action control mechanism, which are additionally arranged on the basis of four froward blocks and one neutral blocks of a transfer case of a motorcycle engine. The back action mechanism comprises a pinion gear which is arranged on a duplex starting gear, a back gear, external teeth of rapidly-splicing sleeves I, II, etc. The back action control mechanism comprises a back action pedal, a back action speed change fan-shaped plate, a back action stop block, etc. Practice indicated, the utility model has the advantages of simple structure, high reliability, convenient operation and great popularization value.

Description

Gear box having reverse gear for engine of motorcycle

The utility model relates to motor cycle engine with band reverse gear change speed gear box, and it belongs to and is used for the variable-speed ratio transferring rotational motion or is used to make the gear system class that rotatablely moves and turn to.

Homemade the Changjiang river 750 series motorcycle driving engines have the change speed gear box of four D Drives of tool and a neutral gear mainly as limit three-wheel, motor tricycle power in its machine.In recent years,, have the people to do a lot, but because structure and in-use performance aspect are all desirable not enough in the reverse gear function aspects that increases machine internal speed-changing case for manoevreability and the alerting ability that increases motor bike.

The purpose of this utility model is exactly with as far as possible little change, and the motor cycle engine of design that structure is comparatively simple, reliable working performance, use are easy to maintenance is with band reverse gear change speed gear box.

Technical essential of the present utility model comprises: duplex starter toothed wheel 24 is housed on starting shaft 29; Suit reverse gearwheel support 22 outside the lining 23 of starting shaft 29, this support 22 overlook gabarit like water caltrop shape, end water caltrop shape is equipped with reverse gearwheel 30, and its other end is sleeved on the reverse speed shift rod 41, can be handled along the 23 upper and lower slips of starting shaft lining by reverse gear control mechanism; Between II speed gear 20 on the output shaft 34 and I speed gear 31 is the sliding hub 21 of band external tooth; Described reverse gear control mechanism is made up of reverse gear gear shifting quadrant 42, reverse gear pedal 43, reverse gear positioning plate 45 etc., and reverse gear gear shifting quadrant 42 can be with the 423 limited swings of reverse gear pedal shaft under the drive of reverse gear pedal 43; Described reverse gear gear shifting quadrant 42 is solidly connected (for example welding) mutually with described reverse gear pedal shaft 423, its end away from affixed position has folding shape guide channel 421 to hold the reverse gear pin 221 that is bonded on the reverse gearwheel support 22, its middle part has arc small gap 422 with when hanging reverse gear, holds the locating dowel pin 451 that is bonded on the reverse gear positioning plate 45; Described reverse gear positioning plate 45 its ends away from locating dowel pin 451 are offered square hole and are socketed on the square toes position 461 of the former gear shifting quadrant axle 46 of change speed gear box.

The utility model is described in further detail below with reference to accompanying drawing.

Accompanying drawing 1 is the structural representation of the utility model change speed gear box.

Accompanying drawing 2 is scheme drawings of reverse gear control mechanism.

Accompanying drawing 3 is the meshing relation between the utility model reverse gear and each gear of steering unit thereof and the location diagram of strength member.

Among the figure: 1---main shaft IV speed gear, 2---mainshaft ball bearing, 3---the main shaft oil sealing, 4---main shaft, 5---mainshaft bushing, 6---the circle of obturaging, 7---minor flaps, 8---the Oil Guide dish, 9---the output shaft ball bearing of main shaft, 10---sliding hub, 11---bearing cap shim, 12---the shelves food tray, 13---output shaft IV speed gear, 14---output shaft connects gear, 15---the change speed gear box protecgulum, 16---output shaft III speed gear, 17---the starting shaft front lining, 18---pad, 19---the starting shaft pull back spring, 20---output shaft II speed gear, 21---the sliding hub of band external tooth, 22---the reverse gearwheel support, 23---the starting shaft lining, 24---started double-linked gear, 25---the starting shaft back bush, 26---the leather cup of obturaging, 27---pressing plate, 28---pedal bar, 29---starting shaft, 30---reverse gearwheel, 31---output shaft I speed gear, 32---the speed gage driven gear, 33---the output shaft oil sealing, 34---output shaft, 35---the coupling shaft apparatus disk, 36---gear box casing, 37---main shaft bearing, 40---straight pin, 41---reverse speed shift rod, 42---the reverse gear gear shifting quadrant, 43---the reverse gear pedal, 44---hold-down nut, 45---the reverse gear positioning plate, 46---former gear shifting quadrant axle, 221---the reverse gear pin, 421---folding shape guide channel, 422---the arc small gap, 423---the reverse gear pedal shaft, 451---locating dowel pin, 461---the square toes position of former gear shifting quadrant axle 46.

The transmission approach of reverse is: sliding hub 21 → output shaft 34 → coupling shaft apparatus disk 35 of being with external tooth between the miniature gears on main shaft → started double-linked gear 24 → step on gear 30 → output shaft II speed tooth opinion 20 and the I speed gear 31.I on output shaft, the sliding hub 21 of band external tooth between II speed gear, and III, when sliding hub 10 is in as shown in Figure 1 midway location between IV speed gear, handle reverse gear pedal 43, can drive reverse gear gear shifting quadrant 42 and do the anticlockwise direction swing with reverse gear pedal shaft 423, so reverse gear pin (being bonded on the reverse gearwheel support 22) 221 unfolds on reverse gear gear shifting quadrant 42 in the shape guide channel 421 and slides to the right, thereby driving reverse gearwheel support 22 moves down along starting shaft lining 23 and reverse speed shift rod 41, the result has realized miniature gears and the above-mentioned output shaft I on reverse gearwheel 30 and the started double-linked gear 24, engagement between II speed between the external tooth of band external tooth sliding hub, thus the reverse gear operation finished; Meanwhile, being socketed on the locating dowel pin 451 on the reverse gear positioning plate 45 on the former gear shifting quadrant axle 46 just in time enters in the arc small gap 422 at reverse gear gear shifting quadrant 42 middle parts (having as shown in Figure 2), the result can't move former gear shifting quadrant axle 46, and this has just realized the interlocking between former gear shifting quadrant and the reverse gear gear shifting quadrant.As breaking away from the reverse gear state, can make reverse gear pedal 43 drive the reverse gear gear shifting quadrant and do the clockwise direction swing around reverse gear pedal axle center, reverse gear pin 221 is slided in folding shape guide channel, thereby it is up to drive reverse gearwheel support 22, realizes separating between each gear relevant with reverse gear left; Simultaneously, the locating dowel pin 451 on the reverse gear positioning plate 45 also breaks away from the arc small gap at reverse gear gear shifting quadrant 42 middle parts, so former gear shifting quadrant axle 46 no longer is tied again, can hang up each D Drive as required ...

In sum, a kind of really simple in structure, reliable operation of the utility model, use motor cycle engine easy to maintenance is with band reverse gear change speed gear box.

Claims

1, motor cycle engine is with being with the reverse gear change speed gear box, and it is on the basis of four D Drives that keep former change speed gear box and a neutral gear, sets up a cover reverse gear mechanism and a steering unit thereof, it is characterized in that:

(A) duplex starter toothed wheel 24 is housed on starting shaft 29;

(B) suit reverse gearwheel support 22 outside the lining 23 of starting shaft 29, this support 22 overlook gabarit like water caltrop shape, end water caltrop shape is equipped with reverse gearwheel 30, and its other end is sleeved on the declutch shift shaft 41, can be handled along the 23 upper and lower slips of starting shaft lining by reverse gear control mechanism;

(C) be the sliding hub 21 of band external tooth between II speed gear 20 and the I speed gear 31 on the output shaft 34;

(D) steering unit of above-mentioned reverse gear mechanism is made up of reverse gear gear shifting quadrant 42, reverse gear pedal 43, reverse gear positioning plate 45 etc., and reverse gear gear shifting quadrant 42 can be done limited swing with reverse gear pedal shaft 423 under the drive of reverse gear pedal 43;

(E) described reverse gear gear shifting quadrant 42 is solidly connected (for example welding) mutually with described reverse gear pedal shaft 423, its end away from affixed position has folding shape guide channel 421 to hold the reverse gear pin 221 that is bonded on the reverse gearwheel support 22, and its middle part has arc small gap 422 to hold the locating dowel pin 451 that is bonded on the reverse gear positioning plate 45 when hanging reverse gear;

(F) described reverse gear positioning plate 45 its ends away from locating dowel pin 451 are offered square hole and are socketed on the square toes position 461 of the former gear shifting quadrant rotating shaft 46 of change speed gear box.