CN201074658Y

CN201074658Y - Gearbox

Info

Publication number: CN201074658Y
Application number: CNU2007200275688U
Authority: CN
Inventors: 邹占伟; 任福臣
Original assignee: China National Heavy Truck Group Jinan Tech Center Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2007-09-18
Filing date: 2007-09-18
Publication date: 2008-06-18
Anticipated expiration: 2017-09-18

Abstract

The utility model relates to a gear box, which comprises an input axle, a main box body and a secondary box body with a main axle, a main box secondary axle which is arranged on the two sides of the main axle, and an output axle in the secondary box body, wherein a planetary structure is arranged between the main axle and the output axle, the output axle is sleeved with input gears, the main axle can be provided with the input gears whose axial direction is fixed and the radial direction can float, and a shift synchronizer which can slide axially is installed between the two input gears. The main box body is further provided with a rotatable interlocking board whose one end is connected with a return spring and the other end can swing in a groove of a main box shift axle. The main box with double-middle structure axial structure of the utility model is combined with the secondary box of planetary structure, which has the advantages of long life span, and compact structure, and the location of the output axle is reliable, and the front side is provided with a plug and separating shift structure which leads the oil consumption of an engine to be in the lowest point and improves the efficiency of fuel oil, and the interlocking structure can reduce the abnormal abrasion of a secondary box synchronizer and prolong the life span.

Description

Gearbox

(1) technical field

The utility model relates to heavy truck accessory technical field, particularly a kind of suitable heavy type or superduty truck gearbox.

(2) background technique

Well-known in common heavy type lorry transmission-gear box structure, it is big that two jack shaft structures have a transmitting torque, the characteristics of long service life.The scope shelves odd-side of former used a kind of gearbox as shown in Figure 5 also adopts odd-side countershaft 14, two jack shaft structures of odd-side countershaft 6, be that output shaft 7 is supported on the housing by bearing 8, form overhanging beam, the contradiction that mainshaft gear exists amount of floating be difficult for to realize and output shaft 7 floats, sealing and support stiffness are faced a difficult choice, therefore, phenomenons such as the odd-side synchronizer that odd-side intensity difference, amount of floating cause damages, output shaft 7 support place casing rigidities are not enough often appear in the gearbox of the type.

(3) summary of the invention

The utility model provides a kind of output torque big in order to overcome the deficiency of above technology, uses reliably the gearbox that the life-span is long.

The utility model is realized by following measure: a kind of gearbox, comprise the input shaft that links to each other with motor, be provided with the main box body of main shaft, the auxiliary housing that is connected with main box body, be positioned at the main tank countershaft of main shaft both sides, be positioned at the output shaft of auxiliary housing, be provided with planetary structure between described main shaft and the output shaft.

The further improvement of the utility model part is: be set with the input gear on the described input shaft, axial restraint, radially relocatable input gear can be installed on the described main shaft, between described two input gears synchromesh unit in axial sliding be installed.

Further improvements of the present utility model are: a rotating interlock board is installed on the described main box body, and described interlock board one end is connected with a return spring, and the other end can be swung in the groove of main tank shift shaft.

Described planetary structure comprises the sun gear that is positioned at the main shaft end, is positioned at the ring gear on the output shaft, the planet wheel that meshes simultaneously with sun gear and ring gear.

The beneficial effects of the utility model:

1. the main tank of two intermediate structure axle construction combines with the planetary structure odd-side, and planetary structure odd-side transmitting torque is big, and gear range is big, long service life, and compact structure, the output shaft location is reliable.

2. input gear 9 is imported gear 10, and synchromesh unit has constituted the preposition slotting crosspiece separating structure that combines together with main box body, makes motor be in the oil consumption minimum point, improves fuel efficiency.

3. the interlock board on the auxiliary housing has constituted the interlocking structure of odd-side gear shift and main tank gear shift, and interlocking structure can prevent that odd-side from changing a main tank gear shift before the shelves, reduces the irregular wear of odd-side synchronizer, has prolonged the working life of synchromesh unit in the odd-side.

4. compact structure, easily manufactured, suitable applying.

(4) description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail

Fig. 1 is the utility model structural representation.

Fig. 2 is a preposition slotting crosspiece separating structure schematic representation of the present utility model.

Fig. 3 is a preposition slotting crosspiece separating structure schematic representation of the present utility model.

Fig. 4 is the interlocking structure of odd-side gear shift of the present utility model and main tank gear shift and the pendulum fork structural representation of interlocking structure.

Fig. 5 is the structural representation that former odd-side adopts the gearbox of two jack shaft structures.

1 input shaft among the figure, 2 main tank countershafts, 3 main tank countershafts, 4 main shafts, 5 planetary structures, 6 odd-side countershafts, 7 output shafts, 8 bearings, 9 input gears, 10 input gears, 11 synchromesh units, 12 interlock boards, 13 bearing pins, 14 odd-side countershafts.

(5) embodiment

A kind of gearbox as shown in Figure 1, comprise the input shaft 1 that links to each other with motor, be provided with the main box body of main shaft 4, the auxiliary housing that is connected with main box body, be positioned at main tank countershaft 2, the main tank countershaft 3 of main shaft 4 both sides, be positioned at the output shaft 7 of auxiliary housing, output shaft 7 is bearing on the housing by bearing 8, is provided with planetary structure 5 between described main shaft 4 and the output shaft 7.

Described planetary structure comprises the sun gear that is positioned at main shaft 4 ends, is positioned at the ring gear on the output shaft 7, the planet wheel that meshes simultaneously with sun gear and ring gear.

Two jack shaft structure main tanks and planetary structure odd-side structure combining, main tank adopts two jack shaft structure main shaft floating structures perfectly to realize, odd-side adopts the planetary structure transmitting torque big, range of transmission ratio is big, long service life, compact structure, can realize easily that central gear comprises floating of sun gear and ring gear, the output shaft location is reliable simultaneously, and when odd-side was in top grade, planetary structure integral body was rotated around the axle center, and planet wheel has only revolution and do not have rotation, can think that the transmission efficiency of planetary mechanism this moment is 100%, churning loss is little.

Be set with input gear 9 on the described input shaft 1 shown in Fig. 2,3, axial restraint, radially relocatable input gear 10 are installed on the described main shaft 4, between described input gear 9 and the input gear 10 synchromesh unit 11 in axial sliding is installed, synchromesh unit passes through the spline flip sleeve on input shaft, slip by synchromesh unit 11 can realize input shaft and import being connected of gear 9 or input gear 10 that said structure has become the preposition slotting crosspiece separating structure of main tank.

Can control the power of input shaft 1 and pass to input gear 9 and still import gear 10 by handling synchromesh unit 11, realize different speed ratios, the gear of increase speed changer.

Be hinged with a rotating interlock board 12 by bearing pin 13 on the described main box body as shown in Figure 4, described interlock board 12 1 ends are connected with a return spring, the other end is swung in the groove of main tank shift shaft, and said structure has constituted the interlocking structure of odd-side gear shift and main tank gear shift.

If odd-side is in gearshift procedure, interlock board 12 can be around locating stud 13 rotations under the effect of spring force, and the other end of interlock board 12 sticks in the groove of shift shaft in the main tank, prevents odd-side main tank gear shift under the situation of not changing shelves.

Claims

1. gearbox, comprise the input shaft (1) that links to each other with motor, be provided with the main box body of main shaft (4), the auxiliary housing that is connected with main box body, be positioned at main tank countershaft (2), (3) of main shaft (4) both sides, be positioned at the output shaft (7) of auxiliary housing, it is characterized in that: be provided with planetary structure between described main shaft (4) and the output shaft (7).

2. gearbox according to claim 1, it is characterized in that: be set with input gear (9) on the described input shaft (1), axial restraint, radially relocatable input gear (10) are installed on the described main shaft (4), between described input gear (9) and the input gear (10) synchromesh unit (11) in axial sliding are installed.

3. gearbox according to claim 1 is characterized in that: a rotating interlock board (12) is installed on the described main box body, and described interlock board (12) one ends are connected with a return spring, and the other end can be swung in the groove of main tank shift shaft.

4. gearbox according to claim 1 is characterized in that: described planetary structure comprises and is positioned at the terminal sun gear of main shaft (4), is positioned at the ring gear on the output shaft (7), the planet wheel that meshes simultaneously with sun gear and ring gear.