CN210591398U - Time-sharing four-wheel-drive commercial vehicle transfer case with differential limiting function - Google Patents
Time-sharing four-wheel-drive commercial vehicle transfer case with differential limiting function Download PDFInfo
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- CN210591398U CN210591398U CN201921295606.7U CN201921295606U CN210591398U CN 210591398 U CN210591398 U CN 210591398U CN 201921295606 U CN201921295606 U CN 201921295606U CN 210591398 U CN210591398 U CN 210591398U
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Abstract
The utility model discloses a time-sharing four-wheel drive commercial vehicle transfer case with differential limitation, including the transfer case body, the transfer case body is provided with a power input shaft, a rear transmission shaft and a front transmission shaft in a rotating manner, the front transmission shaft is arranged in parallel with the power input shaft, a four-wheel drive driving gear is sleeved on the power input shaft in a rotating manner, a rear transmission driven gear is installed on the rear transmission shaft, a synchronizer which is respectively matched with the four-wheel drive driving gear and the rear transmission driven gear for use is installed at the tail end of the power input shaft, a front transmission gear system is installed on the front transmission shaft, a differential transmission system is also arranged in the transfer case body, the input end of the differential transmission system is connected with the four-wheel drive driving gear, and the output end of the differential transmission system is; the utility model discloses can appear the poor quick reaction of moment of torsion to the fore-and-aft axle, the moment of torsion of redistribution fore-and-aft axle guarantees that the engine is in the moment of torsion point reasonable relatively all the time, and the differential can be realized around can carrying out two and drive four-wheel drive again and switch.
Description
Technical Field
The utility model relates to an automobile parts technical field especially relates to a timesharing four-wheel-drive commercial car transfer case of area differential restriction.
Background
At present, the domestic commercial vehicle has no four-wheel drive vehicle type in small tonnage and no four-wheel drive vehicle type in large tonnage, but has no differential function, and has the following defects: (1) the tire wear is large in the four-wheel drive mode; (2) when the vehicle runs on a slippery road, the torque cannot be reasonably distributed, and the transmission efficiency is low; (3) when steering, the front and rear axles can not be in differential speed, and steering is difficult. At present, the small-tonnage commercial vehicle is not driven by four, the trafficability and steering stability of roads which are easy to slip in mud, mountainous areas, deserts, snowfields and the like are poor, the use requirement is difficult to meet, and the vehicle utilization rate is reduced.
The common differential can only realize the differential function and can not realize the torque distribution function, and the hydraulic control differential can realize the differential function and the torque distribution function, but needs to add a sensor and a controller, has complex structure, lags in response and insufficient torque capacity, and has important defects.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a timesharing four-wheel-drive commercial car transfer case of area differential restriction that can satisfy the road demand of traveling that easily skids is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the transfer case of the time-sharing four-wheel drive commercial vehicle with differential limitation comprises a transfer case body, wherein a power input shaft, a rear transmission shaft and a front transmission shaft are rotatably arranged on the transfer case body, the power input shaft and the rear transmission shaft are coaxially arranged, the front transmission shaft and the power input shaft are arranged in parallel, a four-wheel drive driving gear is rotatably sleeved on the power input shaft, a rear drive driven gear is arranged on the rear drive shaft, the tail end of the power input shaft is provided with a synchronizer respectively matched with the four-wheel drive driving gear and the rear drive driven gear, the front transmission shaft is provided with a front transmission gear system, the transfer case body is also internally provided with a differential transmission system, the input end of the differential transmission system is connected with the four-wheel drive driving gear, and the output end of the differential transmission system is respectively connected with the rear transmission driven gear and the front transmission gear system.
As a preferred technical scheme, the differential transmission system comprises a townsend differential mechanism arranged in the transfer case, a front intermediate shaft and a rear intermediate shaft which are parallel to the power input shaft are further rotatably arranged in the transfer case, the output end of the townsend differential mechanism is respectively connected with the front intermediate shaft and the rear intermediate shaft, a front transmission driving gear is arranged on the front intermediate shaft, a rear transmission driving gear is arranged on the rear intermediate shaft, and the rear transmission driving gear is meshed with the rear transmission driven gear; the front transmission driving gear is in transmission connection with the front transmission gear system; and a shell of the Torsen differential is provided with a four-wheel-drive driven gear, and the four-wheel-drive driving gear is meshed with the four-wheel-drive driven gear.
As a preferred technical scheme, the front transmission gear system includes a front transmission driven gear rotatably sleeved on the front transmission shaft, the front transmission shaft is further provided with an engagement sleeve matched with the front transmission driven gear, and the front transmission driven gear is engaged with the front transmission driving gear.
Preferably, the tosen differential is a tosen B-type differential.
According to a preferable technical scheme, the rear transmission shaft is in transmission connection with a rear drive axle, and the front transmission shaft is in transmission connection with a front drive axle.
By adopting the technical scheme, the transfer case of the time-sharing four-wheel drive commercial vehicle with differential limitation comprises a transfer case body, the transfer case is rotatably provided with a power input shaft, a rear transmission shaft and a front transmission shaft, the power input shaft and the rear transmission shaft are coaxially arranged, the front transmission shaft and the power input shaft are arranged in parallel, a four-drive driving gear is rotatably sleeved on the power input shaft, a rear transmission driven gear is arranged on the rear transmission shaft, a synchronizer which is respectively matched with the four-wheel drive driving gear and the rear transmission driven gear for use is arranged at the tail end of the power input shaft, the front transmission shaft is provided with a front transmission gear system, the transfer case body is also internally provided with a differential transmission system, the input end of the differential transmission system is connected with the four-drive driving gear, and the output end of the differential transmission system is respectively connected with the rear transmission driven gear and the front transmission gear system; the utility model has the advantages that: differential transmission system solves and eats child problem because of the inconsistent tire of fore-and-aft axle rotational speed, differential transmission system can appear the poor quick reaction of moment of torsion to the fore-and-aft axle, and the moment of torsion of redistribution fore-and-aft axle guarantees that the engine is in torque point reasonable relatively all the time, can realize around the differential can carry out two and drive four-wheel drive switching again, can realize the adaptation to different road conditions.
The advantages are that: (1) the high-efficiency driving can automatically distribute the torque of the front shaft and the rear shaft according to the adhesive force of the tire, so that the engine is always at a relatively reasonable torque point; (2) the steering self-adaptation is realized, the differential speed between shafts is realized, the rotating speeds of the front shaft and the rear shaft can be distributed, and the problem of difficult steering is solved; (3) the two-wheel drive/four-wheel drive switching technology is characterized in that a vehicle has two-wheel drive and four-wheel drive modes, can be freely switched at a certain speed according to road conditions, and solves the problem of high oil consumption of the four-wheel drive mode under good road conditions; therefore, the time-sharing four-wheel-drive commercial vehicle with differential limitation can meet the driving requirements of slipping and cross-country road conditions, has good controllability, can realize efficient utilization of engine torque, and has the effects of energy conservation and consumption reduction.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a power input shaft; 2-front drive gear; 3-a transfer case; 4-a four-wheel drive gear; 5-a synchronizer; 6-rear drive driven gear; 7-rear drive shaft; 8-front intermediate shaft; 9-front transmission shaft; 10-front transmission driven gear; 11-an engaging sleeve; 12-four-wheel drive driven gear; 13-a torson differential; 14-a rear drive gear; 15-rear intermediate shaft.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, the transfer case of the time-sharing four-wheel-drive commercial vehicle with differential limitation comprises a transfer case body 3, wherein a power input shaft 1, a rear transmission shaft 7 and a front transmission shaft 9 are rotatably arranged on the transfer case body 3, the power input shaft 1 and the rear transmission shaft 7 are coaxially arranged, the front transmission shaft 9 and the power input shaft 1 are arranged in parallel, a four-wheel-drive driving gear 4 is rotatably sleeved on the power input shaft 1, a rear transmission driven gear 6 is arranged on the rear transmission shaft 7, a synchronizer 5 which is respectively matched with the four-wheel-drive driving gear 4 and the rear transmission driven gear 6 is arranged at the tail end of the power input shaft 1, a front transmission gear system is arranged on the front transmission shaft 9, a differential transmission system is further arranged in the transfer case body 3, and the input end of the differential transmission system is connected with the four-wheel-drive driving gear 4, the output end of the differential transmission system is respectively connected with the rear transmission driven gear 6 and the front transmission gear system; differential transmission system solves and eats child problem because of the inconsistent tire of fore-and-aft axle rotational speed, differential transmission system can appear the poor quick reaction of moment of torsion to the fore-and-aft axle, and the moment of torsion of redistribution fore-and-aft axle guarantees that the engine is in torque point reasonable relatively all the time, can realize around the differential can carry out two and drive four-wheel drive switching again, can realize the adaptation to different road conditions. When the gear shifting mechanism is operated, the synchronizer 5 can be respectively meshed with the four-wheel drive driving gear 4 or the rear drive driven gear 6, so that the two-wheel drive or the four-wheel drive is switched.
As shown in fig. 1, the differential transmission system includes a townsend differential 13 disposed in the transfer case 3, a front intermediate shaft 8 and a rear intermediate shaft 15 parallel to the power input shaft 1 are further rotatably disposed in the transfer case 3, an output end of the townsend differential is respectively connected to the front intermediate shaft 8 and the rear intermediate shaft 15, a front transmission driving gear 2 is mounted on the front intermediate shaft 8, a rear transmission driving gear 14 is mounted on the rear intermediate shaft 15, and the rear transmission driving gear 14 is engaged with the rear transmission driven gear 6; the front transmission driving gear 2 is in transmission connection with the front transmission gear system; the shell of the Torsen differential mechanism 13 is provided with a four-wheel-drive driven gear 12, and the four-wheel-drive driving gear 4 is meshed with the four-wheel-drive driven gear 12. The front intermediate shaft 8 and the rear intermediate shaft 15 are provided with the Torsen differential 13 through splines.
As shown in fig. 1, the front transmission gear system includes a front transmission driven gear 10 rotatably sleeved on the front transmission shaft 9, an engagement sleeve 11 fitted with the front transmission driven gear 10 is further installed on the front transmission shaft 9, and the front transmission driven gear 10 is engaged with the front transmission driving gear 2. When the gear shifting mechanism is operated, the engaging sleeve 11 can be engaged with or disconnected from the front driven gear 10, so that the two-drive or four-drive switching is realized.
The Torsen differential 13 is a Torsen B-type differential. The Torsen differential 13 (Torsendiffential), also called Torsen self-locking differential, uses the irreversibility principle of worm gear transmission and high friction condition of tooth surface to make the differential automatically lock or unlock according to the magnitude of its internal differential torque (i.e. internal friction torque of the differential), i.e. when the internal differential torque of the differential is smaller, the differential automatically locks when the internal differential torque of the differential is too large, thus effectively improving the passing ability of the automobile.
The tosen differential 13 can be divided into four types:
(1) the tosen type a differential 13 is also relatively pure, without built-in friction plates, all limited slip coming from the arc teeth. The principle of Torsen A-type limited slip is the self-locking characteristic of the arc teeth, the radian of the arc teeth can be changed, and the limited slip capability can also be changed.
(2) The gears in the Torsen B type are parallel, and friction plates are added. Some of his limited slip capability comes from the arc tooth self-locking and some from the friction plate. The driving force of the friction plate comes from the axial force generated when the meshed gear rotates, when the sliding rotation speed difference occurs, the inside of the differential starts to operate, the axial force generated by the rotation of the gear pushes the sun gear, and the sliding limiting effect is formed by the friction of the friction plate.
(3) The Torsen C type is equivalent to a sandwich structure, one of the sun gears is changed into a gear ring, the gear ring is sleeved with the planet carrier and the sun gear, the middle input and the middle output are sequentially led out through a hollow shaft. It can be seen that the sun gear and ring gear are not the same size, and this configuration can only be used on a central differential to achieve the forward and reverse power distribution function. The limited slip principle of the device is the same as that of Torsen B, and the limited slip principle of the device comes from two aspects of self-locking of arc teeth and end surface friction.
(4) The novel Torsen has a shape similar to that of Torsen B, but the novel Torsen realizes that two sun gears are not equal in size by using three groups of six planetary gears, so that the novel Torsen and the novel Torsen are the same as those of the novel Torsen C, and the novel Torsen is also specially used for realizing the front and rear power distribution of a four-wheel drive vehicle, so that the novel Torsen can only be used at the position of a central differential.
The rear transmission shaft 7 is in transmission connection with a rear drive axle, and the front transmission shaft 9 is in transmission connection with a front drive axle.
The utility model discloses utilize for the first time tusson differential 13 uses as interaxial differential, realizes interaxial differential, solves and eats child problem because of the inconsistent tire of fore-and-aft axle rotational speed, tusson differential 13 can appear the poor quick reaction of moment of torsion to the fore-and-aft axle, and the moment of torsion of redistributing the fore-and-aft axle guarantees that the engine is in torque point reasonable relatively all the time, can realize around the differential can carry out two and drive four-wheel drive switching again, can realize the adaptation to different road conditions.
The advantages are that: (1) the high-efficiency driving can automatically distribute the torque of the front shaft and the rear shaft according to the adhesive force of the tire, so that the engine is always at a relatively reasonable torque point; (2) the steering self-adaptation is realized, the differential speed between shafts is realized, the rotating speeds of the front shaft and the rear shaft can be distributed, and the problem of difficult steering is solved; (3) the two-wheel drive/four-wheel drive switching technology is characterized in that a vehicle has two-wheel drive and four-wheel drive modes, can be freely switched at a certain speed according to road conditions, and solves the problem of high oil consumption of the four-wheel drive mode under good road conditions; therefore, the time-sharing four-wheel-drive commercial vehicle with differential limitation can meet the driving requirements of slipping and cross-country road conditions, has good controllability, can realize efficient utilization of engine torque, and has the effects of energy conservation and consumption reduction.
The working principle is as follows:
two-gear drive: operating the gear shifting mechanism, the synchronizer 5 is meshed with the rear transmission driven gear 6, the meshing sleeve 11 is in a disconnected state, and the transmission route is as follows: the power input shaft 1 → the synchronizer 5 → the rear drive driven gear 6 → the rear propeller shaft 7 → the rear transaxle.
Four-wheel drive gear: and when the gear shifting mechanism is operated, the synchronizer 5 is meshed with the four-wheel drive driving gear 4, the meshing sleeve 11 is meshed with the front drive driven gear 10, and the transmission at the moment is respectively transmitted to the front drive axle and the rear drive axle through two routes, so that four-wheel drive is realized.
Route 1 is: the power input shaft 1 → the four-wheel drive gear 4 → the four-wheel drive driven gear 12 → the townsen differential 13 → the front intermediate shaft 8 → the front drive gear 2 → the front drive driven gear 10 → the front drive shaft 9 → the front drive axle.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Take timesharing four-wheel drive commercial car transfer case of differential restriction, including the transfer case body, the last rotation of transfer case body is provided with power input shaft, rear drive axle and preceding transmission shaft, power input shaft with the coaxial axle center setting of rear drive axle, preceding transmission shaft with power input shaft parallel arrangement, its characterized in that: the power input shaft is rotatably sleeved with a four-wheel drive driving gear, the rear transmission shaft is provided with a rear transmission driven gear, the tail end of the power input shaft is provided with a synchronizer matched with the four-wheel drive driving gear and the rear transmission driven gear for use respectively, the front transmission shaft is provided with a front transmission gear system, the transfer case is internally provided with a differential transmission system, the input end of the differential transmission system is connected with the four-wheel drive driving gear, and the output end of the differential transmission system is connected with the rear transmission driven gear and the front transmission gear system respectively.
2. The split-time four-wheel drive commercial vehicle transfer case with differential speed limitation of claim 1, wherein: the differential transmission system comprises a Torsen differential mechanism arranged in the transfer case body, a front intermediate shaft and a rear intermediate shaft which are parallel to the power input shaft are further rotatably arranged in the transfer case body, the output end of the Torsen differential mechanism is respectively connected with the front intermediate shaft and the rear intermediate shaft, a front transmission driving gear is arranged on the front intermediate shaft, a rear transmission driving gear is arranged on the rear intermediate shaft, and the rear transmission driving gear is meshed with a rear transmission driven gear; the front transmission driving gear is in transmission connection with the front transmission gear system; and a shell of the Torsen differential is provided with a four-wheel-drive driven gear, and the four-wheel-drive driving gear is meshed with the four-wheel-drive driven gear.
3. The split four-wheel drive commercial vehicle transfer case with differential speed limitation of claim 2, wherein: the front transmission gear system comprises a front transmission driven gear which is rotatably sleeved on the front transmission shaft, the front transmission shaft is further provided with an engagement sleeve matched with the front transmission driven gear, and the front transmission driven gear is engaged with the front transmission driving gear.
4. The split four-wheel drive commercial vehicle transfer case with differential speed limitation of claim 2, wherein: the Torsen differential is a Torsen B-type differential.
5. The transfer case for a time-sharing four-wheel-drive commercial vehicle with differential speed limitation as claimed in any one of claims 1 to 4, wherein: the rear transmission shaft is in transmission connection with a rear drive axle, and the front transmission shaft is in transmission connection with a front drive axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295606.7U CN210591398U (en) | 2019-08-08 | 2019-08-08 | Time-sharing four-wheel-drive commercial vehicle transfer case with differential limiting function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295606.7U CN210591398U (en) | 2019-08-08 | 2019-08-08 | Time-sharing four-wheel-drive commercial vehicle transfer case with differential limiting function |
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| CN210591398U true CN210591398U (en) | 2020-05-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466349A (en) * | 2019-08-08 | 2019-11-19 | 山东五征集团有限公司 | Time sharing commercial vehicle transfer case with differential limitation |
| CN112829581A (en) * | 2021-01-08 | 2021-05-25 | 武汉祥振科技有限公司 | Central limited slip differential device and four-wheel automobile driving system comprising same |
-
2019
- 2019-08-08 CN CN201921295606.7U patent/CN210591398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466349A (en) * | 2019-08-08 | 2019-11-19 | 山东五征集团有限公司 | Time sharing commercial vehicle transfer case with differential limitation |
| CN112829581A (en) * | 2021-01-08 | 2021-05-25 | 武汉祥振科技有限公司 | Central limited slip differential device and four-wheel automobile driving system comprising same |
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