阅读说明：本技术 一种差速锁止机构 (Differential locking mechanism ) 是由 郭放 于 2020-05-21 设计创作，主要内容包括：一种差速锁止结构,包括差速器和锁止结构,差速器包括从动齿轮(1)、差速器壳(2)、半轴(10)、半轴齿轮(14)、第一行星齿轮(3)、第二行星齿轮(4)、第一行星齿轮轴(5)以及第二行星齿轮轴(15)；锁止装置包括套筒(9)、第三齿轮(6)、齿套(11)、拨叉(8)和固定件(12)；第一行星齿轮轴(5)位于差速器壳外的一端固定设置有第三齿轮(6),差速器壳一端固定设置有套筒(9),套筒靠近差速器壳的一侧套设有第四齿轮(16),第四齿轮与套筒转动连接,第四齿轮一端固定连接有第五齿轮(13),第五齿轮(13)与套筒(9)转动连接,套筒(9)远离差速器壳的一端有纵向齿槽,齿套(11)套设在套筒上,与齿槽啮合并能沿套筒纵向移动,齿套(11)一端有齿并且能与第五齿轮(13)啮合,齿套外有环状凹槽,凹槽内活动连接有拨叉(8)。(A differential locking structure comprises a differential and a locking structure, wherein the differential comprises a driven gear (1), a differential case (2), a half shaft (10), a side gear (14), a first planetary gear (3), a second planetary gear (4), a first planetary gear shaft (5) and a second planetary gear shaft (15); the locking device comprises a sleeve (9), a third gear (6), a gear sleeve (11), a shifting fork (8) and a fixing piece (12); the one end that first planetary gear axle (5) are located the differential mechanism shell outside is fixed and is provided with third gear (6), differential mechanism shell one end is fixed and is provided with sleeve (9), one side cover that the sleeve is close to the differential mechanism shell is equipped with fourth gear (16), the fourth gear is connected with the sleeve rotation, fourth gear one end fixedly connected with fifth gear (13), fifth gear (13) are connected with sleeve (9) rotation, sleeve (9) keep away from the one end of differential mechanism shell and have vertical tooth's socket, tooth cover (11) cover is established on the sleeve, with the tooth's socket meshing and can follow sleeve longitudinal movement, tooth cover (11) one end has the tooth and can mesh with fifth gear (13), the tooth cover has annular groove outward, swing joint has shift fork (8) in the recess.)

The invention relates to a differential locking mechanism, which comprises a differential and a locking mechanism; the differential comprises a driven gear, a differential shell, a half shaft gear, a planetary gear set and a planetary gear shaft; one end of the differential case is fixedly provided with a driven gear, two ends of the differential case are respectively and rotatably provided with a half shaft, one ends of the two half shafts facing the inside of the differential case are respectively and fixedly provided with a half shaft gear, and the periphery of the half shaft gears is rotationally and symmetrically provided with a planetary gear set; the planetary gear set comprises a gear A, a gear B and a planetary gear shaft, wherein the gear A is meshed with the gear B, the gear A is meshed with one half axle gear, the gear B is meshed with the other half axle gear, and the gear A and the gear B cannot be meshed with the same half axle gear at the same time; the locking device comprises a sleeve, a gear sleeve, a shifting fork and a fixing piece, wherein the planetary gear set is rotationally arranged in the differential case through a planetary gear shaft parallel to the half shaft, the planetary gear set and the planetary gear shaft connected with the planetary gear set are fixedly connected, and one end of one planetary gear shaft facing the outside of the differential case is fixedly provided with the gear C; a sleeve is fixedly arranged at one end, located on the gear C, of the differential case, the sleeve is sleeved on the half shaft, and the sleeve is rotationally connected with the half shaft; a gear D is sleeved on one side, close to the half axle gear, of the sleeve, a gear E is fixedly arranged at one end of the gear D, the sleeve is in rotating connection with the gear D and the gear E, the gear D is meshed with the gear C, and a longitudinal tooth groove is formed in one side, far away from the half axle gear, of the sleeve; the gear sleeve is sleeved on the sleeve, the inner teeth of the gear sleeve are meshed with the tooth grooves of the sleeve, the gear sleeve and the sleeve synchronously rotate, the gear sleeve can longitudinally move along the sleeve, one end of the gear sleeve is provided with teeth opposite to the gear E, one end of the gear sleeve is provided with teeth capable of being meshed with the gear E, an annular groove is formed in the outer side of the gear sleeve, the shifting fork is arranged in the annular groove of the gear sleeve, and the shifting fork is movably connected with the gear sleeve; the fixing piece is arranged between the gear E and the gear sleeve and fixedly connected with the sleeve.

2The differential lock structure of claim 1, wherein the difference in the rotational speed of gear E and the sleeve is adjusted by adjusting the number of teeth of the side gear, the planetary gear a, the planetary gear B, the gear C, and the gear D to facilitate the engagement of gear E and the sleeve.

The differential locking structure of claim 1 wherein the structure for selecting the gear E position and the gear sleeve toothed end position comprises a gear and a friction plate.

The differential locking structure of claim 1, wherein the triggering locking process diversity comprises a fork, a ramp, electromagnetic, pneumatic; the starting mode diversity comprises manual and computer control intelligent starting.

Technical Field

The invention relates to the field of automobile accessories, in particular to a differential locking mechanism.

Background

At present, current differential mechanism locking mechanism, some structure is complicated, some require high difficult manufacturing price to technique and material, some locking process is complicated, need park or low-speed just can the locking, some reaction rate is slow, some structural strength is low, and is not durable, the maintenance difficulty.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of a differential lock mechanism according to the present invention. Fig. 2 is a schematic structural view of embodiment 2 of the differential lock mechanism according to the present invention.

1-driven gear 2-differential case 3-planetary gear A4-planetary gear B5-planetary gear shaft 6-gear C7-gear D8-shift fork 9-sleeve 10-half shaft 11-gear sleeve 12-fixed piece 13-gear E14-half shaft gear 15-planetary gear shaft 16-internal gear D.

Modes for carrying out the invention

Referring now to FIG. 1, the following is illustrated in conjunction with an embodiment: a differential locking mechanism comprises a differential and a locking mechanism. The differential comprises a driven gear 1, a differential case 2, a half shaft 10, a side gear 14, a planetary gear A3, a planetary gear B4, a planetary gear shaft 5 and a planetary gear shaft 15; the driven gear 1 is fixedly arranged at one end of the differential case 2, half shafts 10 are respectively and rotatably arranged at two ends of the differential case 2, the half shaft gears 14 are respectively and fixedly arranged at one ends of the two half shafts 10 facing the inside of the differential case 2, the planetary gears A3 and the planetary gears B4 are rotationally and symmetrically arranged around the half shafts 14, the planetary gears B4 are rotationally connected with the inside of the differential case 2 through planetary gear shafts 15, the planetary gear shafts 15 are parallel to the half shafts 10, the planetary gear A3 is rotationally connected with the inside of the differential case 2 through planetary gear shafts 5, the planetary gear A3 is fixedly connected with the planetary gear shafts 5, the planetary gear shafts 5 are parallel to the half shafts 10, the gear C6 is fixedly arranged at one end of the planetary gear shafts 5 positioned outside the differential case 2, the planetary gear A3 is meshed with the gear B4, and the planetary gear A3 is meshed with one half, the planetary gear B4 meshes with another side gear 14, and the planetary gear A3 and the planetary gear B4 cannot mesh with the same side gear 14 at the same time. What has been described above is the basic structure of the existing mature differential.

The locking device comprises a sleeve 9, a gear C6, a gear D7, a gear E13, a gear sleeve 11, a shifting fork 8 and a fixing piece 12; a sleeve 9 is fixedly arranged on the end, located at the gear C6, of the differential case, the sleeve 9 is sleeved on the half shaft 10, and the sleeve 9 is in rotary connection with the half shaft 10; a gear D7 is sleeved on one side, close to the side gear 14, of the sleeve 9, a gear E13 is fixedly arranged at one end of the gear D7, the sleeve 9 is rotatably connected with the gear D7 and the gear E13, the gear D7 is meshed with the gear C6, and a longitudinal tooth groove is formed in one side, far away from the side gear 14, of the sleeve 9; the gear sleeve 11 is sleeved on the sleeve 9, the inner teeth of the gear sleeve 11 are meshed with the tooth grooves of the sleeve 9, the gear sleeve 11 and the sleeve 9 rotate synchronously, the gear sleeve 11 can move longitudinally along the sleeve 9, one end of the gear sleeve 11 is provided with teeth, one end of the gear sleeve 11 with teeth is opposite to the gear E13, one end of the gear sleeve 11 with teeth can be meshed with the gear E13, an annular groove is formed in the outer side of the gear sleeve 11, the shifting fork 8 is arranged in the annular groove of the gear sleeve 11, and the shifting fork 8 is movably connected with the gear sleeve 11; the fixing piece 12 is arranged between the gear E13 and the gear sleeve 11, and the fixing piece 12 is fixedly connected with the sleeve 9.

When the vehicle is running normally, the sleeve 11 and the gear E13 are in a non-meshed state. The two side gears 14 rotate synchronously without a difference in rotational speed, and the planetary gear a3 and the planetary gear B4, which are respectively meshed with the two side gears 14, do not rotate relatively; at this time, the gear C6 fixedly connected to the planetary gear a3 via the planetary gear shaft 5 also does not rotate relative to the differential case 2, the gear D7 meshed with the gear C6 rotates synchronously relative to the sleeve 9, the gear E13 fixedly connected to the gear D7 also rotates synchronously with the sleeve 9, and the sleeve 11 and the spline of the sleeve 9 mesh with each other and the sleeve 11 rotates synchronously, so that the gear E13 rotates synchronously with the sleeve 11 without a rotation speed difference.

When one side wheel slips, the two side gears 14 generate a rotation speed difference and drive the planetary gear A3 and the planetary gear B4 to rotate relatively, meanwhile, the planetary gear A3 drives the gear C6 to rotate through the planetary gear shaft 5, the gear C6 drives the gear D7 to rotate, the gear E13 fixedly connected with the gear D7 also rotates, and the gear E13 and the gear sleeve 11 generate a rotation speed difference. At this time, the shifting fork 8 is started to drive the gear sleeve 11 to longitudinally move towards the gear E13, so that the gear sleeve 11 is meshed with the gear E13 to complete locking, the gear E13 and the gear sleeve 11 cannot generate a rotation speed difference, the gear D7 and the gear C6 cannot relatively rotate, the planetary gear A3 and the planetary gear B4 cannot relatively rotate, the two side gears 14 cannot generate a rotation speed difference, and the two half shafts 10 can only synchronously rotate.