CN2151309Y

CN2151309Y - Simple vehicle gear

Info

Publication number: CN2151309Y
Application number: CN 93236157
Authority: CN
Inventors: 蔡安国
Original assignee: CHANGZHOU AGRICULTURAL MACHINERY IMPORT AND EXPORT CORP
Current assignee: CHANGZHOU AGRICULTURAL MACHINERY IMPORT AND EXPORT CORP
Priority date: 1993-01-21
Filing date: 1993-01-21
Publication date: 1993-12-29
Anticipated expiration: 2003-01-21

Abstract

The utility model belongs to a gear assembly, comprising a driven shaft, an auxiliary speed changing shaft, a steering shaft, a middle shaft, a driving shaft, a reversing shaft, a shift fork shaft, gears assembled on every shaft and relative components, which are arranged in a speed changing case body. The utility model is characterized in that a speed changing cam plate with an operating rod is arranged above the shift fork of a first shift and a reversing shift and the shift fork of a second shift and a third shift, which installed on the shift fork shaft, for controlling the two shift forks to move to relevant positions. When the utility model is used, the dynamic force imported by the driving shaft controls the position movement of the shift forks through the back and forth rotation of the speed changing cam plate. Thus, the purposes of gear shifting and speed changing are achieved. The utility model has the advantages of simple structure and convenient operation. The shifting positions are visual, and the shifting action can be realized without stopping the vehicle.

Description

Simple vehicle gear

The utility model belongs to a kind of gear drive, is specifically related to a kind of gear drive of controlling speed change or commutation.

The gearbox of simple and easy Motor Vehicle both domestic and external generally all adopts the gear shift mode of conventional gear engagement at present, and its manipulation is to make corresponding mobile with the control fork of bobbing and weaving of operating handle, and then realizes shifted purpose; Be characterized in that speed change is reliable, applied widely, but structure is comparatively complicated, the part accuracy of manufacturing is strict, thereby production, manufacture cost height, and the driver troublesome poeration, and with the feel operation, shift pattern is not directly perceived; Simultaneously, if realize not stopping gear shift, must increase the complexity of its gear again.

The purpose of this utility model provides a kind of shift cam plate that adopts a Joystick to handle and be assemblied in the gearbox, and then control I-reverse speed fork or II-III shelves shift fork, thereby reaches the purpose of speed change and gear shift; Therefore, the utility model is not only simple in structure, low cost of manufacture, and have the advantages that driver is easy to operate, shift pattern directly perceived and can realize not stopping gear shift.

The technical solution of the utility model is: be provided with two live axles that fixing actuation gear is housed in gear box; Be set with two pairs of duplicate gears of forming by secondary speed change gear and constant mesh gear on the secondary variable-speed shaft respectively by constant mesh gear and actuation gear engagement; Being set with two steering gears that are provided with end face clutch tooth, two on the steering shaft turns to spring, is fixed with a central reduction gear that is provided with the clutch tooth in both ends of the surface in the middle; Two turn to shift fork to match with two steering gears respectively, and are meshed with the end face clutch tooth of central reduction gear or throw off in order to handle steering gear, the purpose that turns to realization; The corresponding position of jack shaft is fixed with I shelves driven gear, II shelves driven gear and III shelves driven gear, I shelves driven gear is meshed with constant mesh gear on central reduction gear, mainshaft gear and the reverse gear shaft simultaneously, II shelves driven gear is meshed with II shelves driving gear, and III shelves driven gear is meshed with III shelves driving gear; I-the reverse gear and the II-III shelves clutch that can horizontally slip and be provided with end face clutch tooth are housed respectively on two sections splined shafts of driving shaft, be set with mainshaft gear, II shelves driving gear and the III shelves driving gear that is provided with end face clutch tooth in the corresponding position, I-reverse gear and I-reverse speed fork are joined when being incorporated in reverse gear and are meshed with reverse gear, II-III shelves shift fork matches with II-III shelves gear, II-III shelves shift fork and II-III shelves clutch engagement; Be fixed with reverse gear and constant mesh gear on the reverse gear shaft; Slidably I-reverse speed fork, II-III shelves shift fork and two shift fork springs are housed on the declutch shift shaft; Above I-reverse speed fork and II-III shelves shift fork, also be provided with, the operating handle of the band handle of handling the rotation of shift cam plate is housed at the middle part of shift cam plate in order to handle the shift cam plate that two shift forks move to the relevant position.

The utility model power when work is imported by driving shaft, moves by the position of coming back rotation to handle shift fork of shift cam plate, and then controls corresponding driving mechanism and realize three kinds of forward gearss, a kind of reverse gear and neutral gears.

The utility model has the advantages that simple in structure, low cost of manufacture, driver is easy to operate, shift pattern is directly perceived, and can realize the gear shift of not stopping.

Description of drawings:

Fig. 1 structural representation sketch.

Fig. 2 shift cam plate schematic representation.

Below in conjunction with drawings and Examples the utility model is further described: present embodiment is a kind of gearbox of simple and easy tractor, is provided with two live axles 1 that fixing actuation gear 29 is housed in the casing of gearbox; Be set with two pairs of duplicate gears of forming by secondary speed change gear 28 and constant mesh gear 30 on the secondary variable-speed shaft 2 respectively by constant mesh gear 30 and actuation gear 29 engagements; Be set with two steering gears that are provided with end face clutch tooth 3, two on the steering shaft 26 and turn to spring 27, be fixed with a central reduction gear 5 that is provided with end face clutch tooth at two ends in the middle; Two turn to shift fork 4 to match with two steering gears 3 respectively, and are meshed with the end face clutch tooth of central reduction gear 5 or throw off in order to handle steering gear 3, the purpose that turns to realization; The corresponding position of jack shaft 6 is fixed with I shelves driven gear 7, II shelves driven gear 22 and III shelves driven gear 24, I shelves driven gear 7 simultaneously with central reduction gear 5, mainshaft gear 10 and reverse gear shaft 19 on constant mesh gear 14 engagements, II shelves driven gear 22 is meshed with II shelves driving gear 20, and III shelves driven gear 24 is meshed with III shelves driving gear 23; I-the reverse gear 9 and the II-III shelves clutch 21 that can horizontally slip and be provided with end face clutch tooth are housed respectively on two sections splined shafts of driving shaft 8, be set with mainshaft gear 10, II shelves driving gear 20 and the III shelves driving gear 23 that is provided with end face clutch tooth in the corresponding position, I-reverse gear 9 and I-reverse speed fork 13 are joined when being incorporated in reverse gear and are meshed with reverse gear 11, and II-III shelves shift fork 18 cooperates with II-III shelves clutch 21; Be fixed with reverse gear 11 and constant mesh gear 14 on the reverse gear shaft 19; Slidably I-reverse speed fork 13, II-III shelves shift fork 18 and two shift fork springs 12 are housed on the declutch shift shaft 16; Above I-reverse speed fork 13 and II-III shelves shift fork 18, also be provided with, the operating handle 15 of the band handle of handling 17 rotations of shift cam plate is housed at the middle part of shift cam plate 17 in order to handle the shift cam plate 17 that two shift forks move to the relevant position.

In actual use, rotate shift cam plate 17 to the relevant position with operating handle 15, the mobile I-reverse gear 9 that makes by I-reverse speed fork remains on neutral position, force simultaneously II-III shelves shift fork 18 on declutch shift shaft 16 to the right or a left side slide, driving II-III shelves clutch 21 slides to the right on driving shaft 8 and 23 engagements of III shelves driving gear, or slide left and 20 engagements of II shelves driving gear, the transmission by gear pair makes live axle 1 obtain the corresponding velocity ratio of II shelves or III shelves respectively.Same available operating handle 15 rotates shift cam plate 17, the mobile II-III shelves clutch 21 that makes by II-III shelves shift fork is in neutral position, and force I-reverse speed fork 13 drive I-reverse gears 9 on driving shaft 8 to the right or a left side slide, to the right with mainshaft gear 10 engagements, or left with reverse gear 11 engagement, the transmission by gear pair makes live axle 1 obtain the corresponding velocity ratio of I shelves or reverse gear respectively.Tractor advance or the process that retreats in, turn to spring 27 to press

steering gear

3 and 25, make its end face clutch tooth all the time with the end face clutch tooth engagement of central reduction gear 5.When tractor will turn to, only need pull respectively and turn to shift fork 4,

steering gear

3 or 25 is moved and compress the corresponding spring 27 that turns to, so corresponding steering gear 25 is thrown off the purpose that makes corresponding driving axle 1 stop operating and turn to realize with central reduction gear 5.

Claims

1, a kind of gearbox of simple and easy Motor Vehicle is provided with two live axles 1 that fixing actuation gear 29 is housed in the casing; Be set with two pairs of duplicate gears of forming by secondary speed change gear 28 and constant mesh gear 30 on the secondary variable-speed shaft 2 respectively by constant mesh gear 30 and actuation gear 29 engagements; Being set with two steering gears that are provided with end face clutch tooth 3, two on the steering shaft 26 turns to spring 27, is fixed with a central reduction gear 5 that is provided with the clutch tooth in both ends of the surface in the middle; Two turn to shift fork 4 to match with two steering gears 3 respectively, and are meshed with the end face clutch tooth of central reduction gear 5 or throw off in order to handle steering gear 3, the purpose that turns to realization; The corresponding position of jack shaft 6 is fixed with I shelves driven gear 7, II shelves driven gear 22 and III shelves driven gear 24, I shelves driven gear 7 simultaneously with central reduction gear 5, mainshaft gear 10 and reverse gear shaft 19 on constant mesh gear 14 engagements, II shelves driven gear 22 is meshed with II shelves driving gear 20, and III shelves driven gear 24 is meshed with III shelves driving gear 23; I-the reverse gear 9 and the II-III shelves clutch 21 that can horizontally slip and be provided with end face clutch tooth are housed respectively on two sections splined shafts of driving shaft 8, be set with mainshaft gear 10, II shelves driving gear 20 and the III shelves driving gear 23 that is provided with end face clutch tooth in the corresponding position, I-reverse gear 9 and I-reverse speed fork 13 are joined when being incorporated in reverse gear and are meshed with reverse gear 11, and II-III shelves shift fork 18 cooperates with II-III shelves clutch 21; Be fixed with reverse gear 11 and constant mesh gear 14 on the reverse gear shaft 19; Slidably I-reverse speed fork 13, II-III shelves shift fork 18 and two shift fork springs 12 are housed on the declutch shift shaft 16; It is characterized in that: above I-reverse speed fork 13 and II-III shelves shift fork 18, also be provided with, the operating handle 15 of the band handle of handling 17 rotations of shift cam plate is housed at the middle part of shift cam plate 17 in order to handle the shift cam plate 17 that two shift forks move to the relevant position.