阅读说明：本技术 一种全时四驱变速器 (Full-time four-wheel drive transmission ) 是由 黄小风 邓利刚 高秀琴 叶光海 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种全时四驱变速器,包括变速器壳体,以及安装在变速器壳体上的输入轴总成、倒挡中间齿轮、中间轴总成、前驱输出轴总成、转换轴总成、后驱输出轴总成、驻车爪组件和换挡杆总成；本发明对整体结构进行了合理紧凑布置,利用各齿轮、各轴间的传动,配合其他各零部件的使用,在同一个变速器内同时实现了全时的前轮驱动力的输出和后轮驱动力的输出；通过换挡机构的换挡,在实现四轮驱动的同时,实现了驻车、倒车、空挡、前进四个不同的挡位。(The invention discloses a full-time four-wheel drive transmission, which comprises a transmission shell, an input shaft assembly, a reverse gear intermediate gear, an intermediate shaft assembly, a front drive output shaft assembly, a conversion shaft assembly, a rear drive output shaft assembly, a parking claw assembly and a gear shift lever assembly, wherein the input shaft assembly, the reverse gear intermediate gear, the intermediate shaft assembly, the front drive output shaft assembly, the conversion shaft assembly, the rear drive output shaft assembly, the parking claw assembly and; the invention carries out reasonable and compact arrangement on the whole structure, utilizes the transmission among all gears and all shafts, and is matched with other parts for use, and realizes the output of the driving force of the front wheel and the output of the driving force of the rear wheel at the same time in the same speed changer; through the gear shifting of the gear shifting mechanism, four-wheel drive is realized, and meanwhile, four different gears of parking, backing, neutral and advancing are realized.)

1. A full-time four-wheel drive transmission is characterized by comprising a transmission housing (3), an input shaft assembly (1), a reverse gear intermediate gear (2), an intermediate shaft assembly (4), a front drive output shaft assembly (5), a conversion shaft assembly (6), a rear drive output shaft assembly (7), a parking claw assembly (8) and a gear shift lever assembly (9) which are arranged on the transmission housing (3);

the input shaft assembly (1) comprises an input shaft (101), a forward gear driving gear (102) and a reverse gear driving gear (103), the input shaft (101) is rotatably connected to the transmission housing (3) through a bearing, one end provided with an external spline penetrates through the transmission housing (3), and the forward gear driving gear (102) and the reverse gear driving gear (103) are fixed on the input shaft (101);

the intermediate shaft assembly (4) comprises an intermediate shaft (401), a first ball bearing (402), an output gear (403), a first forward gear driven gear (404), a gear shifting gear sleeve (405), a needle bearing (406), a second reverse gear driven gear (407), a parking gear (408) and a second ball bearing (409), two ends of the intermediate shaft (401) are respectively installed on the transmission housing (3) through the first ball bearing (402) and the second ball bearing (409), the first forward gear driven gear (404) is connected to the intermediate shaft (401) in a matched and rotating mode through a unthreaded hole, the second reverse gear driven gear (407) is connected to the intermediate shaft (401) in a rotating mode through a hole and the needle bearing (406), a first combined tooth (4041) and a second combined tooth (4071) are respectively arranged on the first forward gear driven gear (404) and the second reverse gear driven gear (407), and the output gear (403) and the parking gear (408) are both installed on the intermediate shaft (401) through splines, the gear shifting gear sleeve (405) is connected to the intermediate shaft (401) through a spline;

the front-drive output shaft assembly (5) comprises a front-drive output shaft (501) and a front-drive output shaft gear (502), the front-drive output shaft (501) is rotatably connected to the transmission housing (3) through a bearing, two ends of the front-drive output shaft gear penetrate through the transmission housing (3), the front-drive output shaft gear (502) is fixed on the front-drive output shaft (501), and two ends of the front-drive output shaft (5) are provided with internal splines;

the conversion shaft assembly (6) comprises a conversion shaft (601), a conversion shaft gear (602) and a conversion shaft bevel gear (603), the conversion shaft (601) is rotatably connected to the transmission housing (3) through a bearing, and the conversion shaft gear (602) and the conversion shaft bevel gear (603) are integrally connected with the conversion shaft (601);

the rear-drive output shaft assembly (7) comprises a rear-drive output shaft (701) and a rear-drive output shaft bevel gear (702) integrally connected with the rear-drive output shaft (701), the rear-drive output shaft (701) is rotatably connected to the transmission housing (3) through a bearing, and one end provided with an external spline penetrates through the transmission housing (3);

the transmission comprises a transmission shell (3), a forward gear driving gear (102), a reverse gear driving gear (103), a reverse gear intermediate gear (2) and a reverse gear driven gear (407), wherein the forward gear driving gear (102) is meshed with the forward gear driven gear (404), the reverse gear driving gear (103) is respectively meshed with the reverse gear intermediate gear (2) and the reverse gear driven gear (407), the reverse gear intermediate gear (2) is fixed on a reverse gear intermediate gear shaft and is mounted on the transmission shell (3) through a bearing, a front drive output shaft gear (502) is respectively meshed with an output gear (403) and a conversion shaft gear (602), and a conversion shaft bevel gear (603) is meshed.

2. The all-time four-wheel drive transmission according to claim 1, wherein the first coupling tooth (4041) and the second coupling tooth (4071) are both straight tooth structures, and the shifting tooth sleeve (405) can slide in the axial direction and is sleeved on the first coupling tooth (4041) and the second coupling tooth (4071).

3. The all-time four-wheel drive transmission according to claim 1, characterized in that the shift lever assembly (9) is a shifting mechanism of the whole transmission, can rotate around an axis within a certain angle range, cannot move along the axial direction, the parking claw assembly (8) can swing around the axis within a certain angle range, cannot move along the axial direction, when the gear is a parking gear, the shift lever assembly (9) pushes the parking claw of the parking claw assembly (8), and the parking claw of the parking claw assembly (8) is clamped into the groove of the parking gear (408).

4. The all-time four-wheel drive transmission according to claim 1, characterized in that the input shaft (101), the reverse intermediate gear shaft, the intermediate shaft (401) and the forward drive output shaft (501) are all arranged in parallel with the conversion shaft (601), and the backward drive output shaft (701) is arranged perpendicular to the conversion shaft (601).

5. The all-time four-wheel drive transmission according to claim 1, characterized in that the input shaft (101) is connected with an engine by means of external splines.

6. The full-time four-wheel drive transmission according to claim 1, characterized in that the front-drive output shaft (501) is connected with a transmission half shaft of a whole vehicle through an internal spline.

7. The full-time four-wheel drive transmission according to claim 1, characterized in that the rear drive output shaft (701) is connected with the rear axle of the entire vehicle by means of external splines.

Technical Field

The invention belongs to the technical field of transmissions, and particularly relates to a full-time four-wheel-drive transmission.

Background

Related parts of the limited-motion off-road vehicles such as beach vehicles on the market are less produced in China, and particularly, the condition that key parts such as transmissions depend on import is more serious. The all-time four-wheel drive transmission is inventively designed according to the arrangement, the installation structure and the actual use working condition of the vehicle, meets the use performance requirement, fills the blank of parts in China, greatly reduces the selling price of the parts and meets the market requirement.

Disclosure of Invention

The invention provides a full-time four-wheel drive transmission, which aims to solve the problems in the background technology. The technical scheme of the invention is realized as follows:

a full-time four-wheel drive transmission comprises a transmission shell, an input shaft assembly, a reverse gear intermediate gear, an intermediate shaft assembly, a front drive output shaft assembly, a conversion shaft assembly, a rear drive output shaft assembly, a parking claw assembly and a gear shift lever assembly, wherein the input shaft assembly, the reverse gear intermediate gear, the intermediate shaft assembly, the front drive output shaft assembly, the conversion shaft assembly, the rear drive output shaft assembly, the parking claw assembly and the gear;

the input shaft assembly comprises an input shaft, a forward gear driving gear and a reverse gear driving gear, the input shaft is rotatably connected to the transmission shell through a bearing, one end provided with an external spline penetrates through the transmission shell, and the forward gear driving gear and the reverse gear driving gear are both fixed on the input shaft;

the intermediate shaft assembly comprises an intermediate shaft, a first ball bearing, an output gear, a first forward gear driven gear, a gear shifting gear sleeve, a needle bearing, a second reverse gear driven gear, a parking gear and a second ball bearing, wherein two ends of the intermediate shaft are respectively installed on the transmission shell through the first ball bearing and the second ball bearing, the first forward gear driven gear is in fit rotation connection with the intermediate shaft through a unthreaded hole, the second reverse gear driven gear is in rotation connection with the intermediate shaft through a hole and the needle bearing, a first engaging tooth and a second engaging tooth are respectively arranged on the first forward gear driven gear and the second reverse gear driven gear, the output gear and the parking gear are both installed on the intermediate shaft through splines, and the gear shifting gear sleeve is connected to the intermediate shaft through splines;

the front-drive output shaft assembly comprises a front-drive output shaft and a front-drive output shaft gear, the front-drive output shaft is rotatably connected to the transmission shell through a bearing, two ends of the front-drive output shaft penetrate through the transmission shell, the front-drive output shaft gear is fixed on the front-drive output shaft, and two ends of the front-drive output shaft are both provided with internal splines;

the conversion shaft assembly comprises a conversion shaft, a conversion shaft gear and a conversion shaft bevel gear, the conversion shaft is rotatably connected to the transmission shell through a bearing, and the conversion shaft gear and the conversion shaft bevel gear are connected with the conversion shaft in an integrated manner;

the rear-drive output shaft assembly comprises a rear-drive output shaft and a rear-drive output shaft bevel gear which is integrally connected with the rear-drive output shaft, the rear-drive output shaft is rotatably connected to the transmission shell through a bearing, and one end provided with an external spline penetrates through the transmission shell;

the transmission comprises a transmission shell, a forward gear driving gear, a reverse gear intermediate gear shaft, a forward gear driven gear, a reverse gear intermediate gear, a forward drive output shaft gear, a reverse gear intermediate gear shaft, a forward drive output shaft gear.

In the full-time four-wheel drive transmission, the first combination teeth and the second combination teeth are both straight tooth structures, and the gear shifting gear sleeve can slide along the axial direction and is sleeved on the first combination teeth and the second combination teeth.

In the full-time four-wheel-drive transmission, the gear shifting rod assembly is a gear shifting mechanism of the whole transmission, can rotate around an axis within a certain angle range and cannot move along the axial direction, the parking claw component can swing around the axis within a certain angle range and cannot move along the axial direction, when a gear is a parking gear, the gear shifting assembly pushes a parking claw of the parking claw component, and the parking claw of the parking claw component is clamped into a parking gear groove.

In the full-time four-wheel drive transmission, the input shaft, the reverse gear intermediate gear shaft, the intermediate shaft and the front drive output shaft are all arranged in parallel with the conversion shaft, and the rear drive output shaft is arranged perpendicular to the conversion shaft.

In the full-time four-wheel drive transmission of the invention, the input shaft is connected with the engine through an external spline.

In the full-time four-wheel-drive transmission, the front-drive output shaft is connected with a transmission half shaft of a whole vehicle through an internal spline.

In the full-time four-wheel drive transmission, the rear drive output shaft is connected with a rear axle of a whole vehicle through an external spline.

The full-time four-wheel drive transmission has the following beneficial effects:

the invention carries out reasonable and compact arrangement on the whole structure, utilizes the transmission among all gears and all shafts, and is matched with other parts for use, and realizes the output of the driving force of the front wheel and the output of the driving force of the rear wheel at the same time in the same speed changer; through the gear shifting of the gear shifting mechanism, four-wheel drive is realized, and meanwhile, four different gears of parking, backing, neutral and advancing are realized.

Drawings

FIG. 1 is a schematic structural diagram of a full-time four-wheel drive transmission of the present invention;

FIG. 2 is a schematic structural diagram of a full-time four-wheel drive transmission of the present invention;

FIG. 3 is a schematic representation of the gearing relationship of the full-time four-wheel drive transmission of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The full-time four-wheel drive transmission as shown in fig. 1 to 3 comprises a transmission housing 3, and an input shaft assembly 1, a reverse intermediate gear 2, an intermediate shaft assembly 4, a front drive output shaft assembly 5, a conversion shaft assembly 6, a rear drive output shaft assembly 7, a parking claw assembly 8 and a gear shift lever assembly 9 which are arranged on the transmission housing 3;

the input shaft assembly 1 comprises an input shaft 101, a forward gear driving gear 102 and a reverse gear driving gear 103, wherein the input shaft 101 is rotatably connected to a transmission housing 3 through a bearing, one end provided with an external spline penetrates through the transmission housing 3, the forward gear driving gear 102 and the reverse gear driving gear 103 are both fixed on the input shaft 101, and the input shaft 101 is connected with an engine through the external spline and transmits power of the engine to the transmission.

The intermediate shaft assembly 4 comprises an intermediate shaft 401, a first ball bearing 402, an output gear 403, a forward gear driven gear 404, a shifting gear sleeve 405, a needle bearing 406, a reverse gear driven gear 407, a parking gear 408 and a second ball bearing 409, wherein two ends of the intermediate shaft 401 are respectively installed on the transmission housing 3 through the first ball bearing 402 and the second ball bearing 409, the forward gear driven gear 404 is rotatably connected to the intermediate shaft 401 through a light hole in a matching manner, the reverse gear driven gear 407 is rotatably connected to the intermediate shaft 401 through a hole and the needle bearing 406, the forward gear driven gear 404 and the reverse gear driven gear 407 can freely rotate around a shaft, a first combined tooth 4041 and a second combined tooth 4071 are respectively arranged on the forward gear driven gear 404 and the reverse gear driven gear 407, the combined teeth are straight teeth structures, the output gear 403 and the parking gear 408 are both installed on the intermediate shaft 401 through splines and do not rotate relative to the intermediate shaft 401, the shifting gear sleeve 405 is, there is no relative rotation, but the shift sleeve 405 can slide within a certain range along the axial direction, so that the shift sleeve 405 is fitted over the coupling tooth first 4041 of the forward driven gear 404 or over the coupling tooth second 4071 of the reverse driven gear 407.

The front-drive output shaft assembly 5 comprises a front-drive output shaft 501 and a front-drive output shaft gear 502, the front-drive output shaft 501 is rotatably connected to the transmission housing 3 through a bearing, two ends of the front-drive output shaft 501 penetrate through the transmission housing 3, the front-drive output shaft gear 502 is fixed on the front-drive output shaft 501, two ends of the front-drive output shaft 5 are respectively provided with an internal spline, the front-drive output shaft 501 is connected with a transmission half shaft of the whole vehicle through the internal splines, and can transmit rotation torque to the transmission half shaft from the front-drive output shaft 501 and then to a front wheel of.

The conversion shaft assembly 6 comprises a conversion shaft 601, a conversion shaft gear 602 and a conversion shaft bevel gear 603, wherein the conversion shaft 601 is rotatably connected to the transmission housing 3 through a bearing, and the conversion shaft gear 602 and the conversion shaft bevel gear 603 are integrally connected with the conversion shaft 601;

the rear-drive output shaft assembly 7 comprises a rear-drive output shaft 701 and a rear-drive output shaft bevel gear 702 integrally connected with the rear-drive output shaft 701, the rear-drive output shaft 701 is rotatably connected to the transmission housing 3 through a bearing, one end provided with an external spline penetrates through the transmission housing 3, the rear-drive output shaft 701 is connected with a rear axle of the whole vehicle through the external spline, and can transmit rotating torque to a rear wheel of the whole vehicle, so that rear-wheel drive of the whole vehicle is realized.

The gear shifting rod assembly 9 is a gear shifting mechanism of the whole transmission, can rotate around an axis in a certain angle range, and cannot move along the axial direction; the parking pawl assembly 8 is able to swing through a range of angles about an axis and is axially immovable.

The forward driving gear 102 is meshed with the forward driven gear 404, the reverse driving gear 103 is respectively meshed with the reverse intermediate gear 2 and the reverse driven gear 407, the reverse intermediate gear 2 is fixed on a reverse intermediate gear shaft and is mounted on the transmission housing 3 through a bearing, the forward drive output shaft gear 502 is respectively meshed with the output gear 403 and the change-over shaft gear 602, the change-over shaft bevel gear 603 is meshed with the rear drive output shaft bevel gear 702, the input shaft 101, the reverse intermediate gear shaft, the intermediate shaft 401 and the forward drive output shaft 501 are all arranged in parallel with the change-over shaft 601, and the rear drive output shaft 701 is arranged perpendicular to the change-over shaft 601.

When the gear shifting sleeve 405 is in the middle position and is not sleeved on the combined teeth, the transmission is in a neutral position at the moment; when the shift sleeve 405 is fitted over the first engaging tooth 4041 of the forward driven gear 404, which is in the forward state, the forward driving gear 102 on the input shaft 101 transmits the rotational torque of the input shaft 101 to the forward driven gear 404 in the countershaft assembly 4. The transmission route of the rotation torque of the transmission is as follows: the engine → the input shaft 101 (forward drive gear 102) → the forward driven gear 404 → the first coupling tooth 4041 of the forward driven gear 404 → the shift sleeve 405 → the intermediate shaft 401 → the forward drive output shaft 501 → the changeover shaft 601 → the rear drive output shaft 701. When the shift sleeve 405 is engaged with the second engaging tooth 4071 of the reverse driven gear 407, and is in a reverse state, the rotational torque of the input shaft 101 is transmitted to the reverse driven gear 407 in the countershaft 401 assembly through the reverse intermediate gear 2. The transmission route of the rotation torque of the transmission is as follows: engine → input shaft 101 (reverse drive gear 103) → reverse idler gear 2 → reverse driven gear 407 → second coupling tooth 4071 of reverse driven gear 407 → shift sleeve 405 → intermediate shaft 401 → forward drive output shaft 501 → change-over shaft 601 → rear drive output shaft 701. When the gear shift lever assembly 9 pushes the parking claw assembly 8 to rotate, so that the parking claw of the parking claw assembly 8 is clamped into the groove of the parking gear 408, the parking gear 408 cannot rotate, the intermediate shaft 401 cannot rotate, finally, all shafts in the whole transmission cannot rotate, and the parking function is achieved. The gear shifting device can be controlled by a manual cable to shift gears manually, and can also be controlled by a motor to realize the switching of four gears such as parking, backing, neutral gear, advancing and the like. In either a forward gear state or a reverse gear state, transmission of a rotational torque is always achieved through gear engagement, spline fitting and the like, that is, four-wheel drive in a full-time state is achieved.