阅读说明：本技术 轮式挖掘机动力挂档变速器 (Power gear shifting transmission of wheel type excavator ) 是由 陈光星 龚新生 庄伟雄 于 2020-08-05 设计创作，主要内容包括：本发明公开了这样一种轮式挖掘机动力挂档变速器,为解决已有轮式挖掘机存在的不能实现自动变速的不足,本发明采取液力变矩器(1)与取力器(28)连接,液力变矩器(1)内的主动轴Ⅰ(2)与主动轴Ⅱ(5)连接,在主动轴Ⅱ(5)上套装有倒档行星排(9)和前进档行星排(10),行星架Ⅰ(7)与倒档制动器(27)连接,齿圈Ⅰ(8)与行星轮Ⅱ(12)连接,在齿圈Ⅱ(11)上套装有前进档制动器(26),在从动轴(18)上套装有三档行星排(15)和二档行星排(17),行星架Ⅱ(25)与行星架Ⅲ(24)连接,齿圈Ⅲ(14)与三档制动器(23)连接,齿圈Ⅲ(14)与行星架Ⅳ连接,齿圈Ⅳ(16)与二档制动器(22)连接,在从动轴(18)上还设置有制动油缸(30),制动油缸(30)与齿圈Ⅳ(16)连接,一档离合器(21)与从动轴(18)连接。(The invention discloses a power gear shifting transmission of a wheel excavator, which aims to solve the defect that the existing wheel excavator cannot realize automatic speed change, a hydraulic torque converter (1) is connected with a power takeoff (28), a driving shaft I (2) in the hydraulic torque converter (1) is connected with a driving shaft II (5), a reverse gear planet row (9) and a forward gear planet row (10) are sleeved on the driving shaft II (5), a planet carrier I (7) is connected with a reverse gear brake (27), a gear ring I (8) is connected with a planet carrier II (12), a forward gear brake (26) is sleeved on the gear ring II (11), a third gear planet row (15) and a second gear planet row (17) are sleeved on a driven shaft (18), a planet carrier II (25) is connected with a planet carrier III (24), a gear ring (14) is connected with a third gear brake (23), and a gear ring III (14) is connected with a planet carrier IV, the gear ring IV (16) is connected with the second-gear brake (22), the driven shaft (18) is further provided with a brake cylinder (30), the brake cylinder (30) is connected with the gear ring IV (16), and the first-gear clutch (21) is connected with the driven shaft (18).)

1. The utility model provides a wheeled excavator power engage gear derailleur which characterized in that: the hydraulic torque converter is composed of a box body (13), a hydraulic torque converter (1), a power takeoff (28), an output gear box (20), a reverse gear planet row (9), a forward gear planet row (10), a third gear planet row (15), a second gear planet row (17), a driving shaft I (2), a driving shaft II (5) and a driven shaft (18), wherein the hydraulic torque converter (1) which is in transmission connection with an engine is connected with the power takeoff (28) through a power takeoff bridge gear (29), the driving shaft I (2) in the hydraulic torque converter (1) is in transmission connection with one end of the driving shaft II (5) in the box body (13) through a sleeve (4), the other end of the driving shaft II (5) is connected with the box body (13) through a bearing, a planet carrier II (25) and a bearing, the reverse gear planet carrier row (9) and the forward gear planet carrier row (10) are sleeved on the driving shaft II (5), the planet carrier I (7) on the reverse gear planet carrier (9) is connected with, a gear ring I (8) on a reverse gear planetary row (9) is connected with a planetary gear II (12) on a forward gear planetary row (10), a forward gear brake (26) is sleeved on a gear ring II (11) on the forward gear planetary row (10), a planetary carrier II (25) on the forward gear planetary row (10) is connected with a planetary carrier III (24) on a third gear planetary row (15) mounted on a driven shaft (18), a third gear planetary row (15) and a second gear planetary row (17) are sleeved on the driven shaft (18), a gear ring III (14) on the third gear planetary row (15) is connected with a third gear brake (23), the gear ring III (14) is connected with a planetary carrier IV on the second gear planetary row (17), a gear IV (16) on the second gear planetary row (17) is connected with a second gear brake (22), a brake cylinder (30) is further arranged on the driven shaft (18), and the brake cylinder (30) is connected with a gear ring IV (16) on the second gear planetary row (17) through a first gear clutch (21), the first-gear clutch (21) is also connected with the driven shaft (18) through a transmission disc (31), one end of the driven shaft (18) is arranged in the box body (13) and is connected with the box body (13) through a bearing, a planet carrier III (24), a planet carrier II (25) and the bearing, and the other end of the driven shaft (18) extends into the output gear box (20) and is in transmission connection with a bevel gear (19) in the output gear box (20).

2. A wheel excavator power transmission according to claim 1, characterized in that: and a columnar bulge is arranged on the other end face of the driving shaft II (5), an annular groove convenient for placing a sealing ring is arranged on the circumferential surface of the columnar bulge, and an oil way is arranged at the axial position of the driving shaft II (5) and is communicated with the oil way on the driven shaft (18).

3. A wheel excavator power transmission according to claim 1, characterized in that: a columnar groove which can be matched with the columnar bulge on the other end face of the driving shaft II (5) is arranged on the end face of the driven shaft (18) arranged in the box body (13), an oil way is arranged at the axial position of the driven shaft (18) and is communicated with the oil way on the driving shaft II (5), and a braking oil way is also arranged at the axial position of the driven shaft (18) and is connected with a braking oil cylinder (30).

4. A wheel excavator power transmission according to claim 1, characterized in that: the inner hole of the planet carrier II (25) is arranged in a step shape to form a large hole and a small hole, and the inner surface of the outward large hole is provided with a spline which is convenient to be meshed with the planet carrier III (24).

5. A wheel excavator power transmission according to claim 1, characterized in that: and a spline is arranged on the outer surface of the planet carrier III (24) so as to be conveniently meshed with an internal spline of the planet carrier II (25).

6. A wheel excavator power transmission according to claim 1, characterized in that: the inner surface of the sleeve (4) is provided with a spline, and the outer surface of the sleeve (4) is sleeved with a speed measuring wheel II (3) and is in contact with a sensor II (6) arranged on the box body (13).

7. A wheel excavator power transmission according to claim 1, characterized in that: and a spline is arranged on the outer surface of one end of the driving shaft I (2) connected with the sleeve (4).

8. A wheel excavator power transmission according to claim 1, characterized in that: and a spline is arranged on the outer surface of one end of the driving shaft II (5) connected with the sleeve (4).

9. A wheel excavator power transmission according to claim 1, characterized in that: the transmission disc (31) is connected with the driven shaft (18) through a spline.

10. A wheel excavator power transmission according to claim 1, characterized in that: the axial section of the gear ring IV (16) is set to be Z-shaped, and splines convenient for mounting a second-gear brake (22) and a first-gear clutch (21) are respectively arranged on the outer surfaces of two ends of the gear ring IV (16).

Technical Field

The invention relates to a transmission, in particular to a power gear shifting transmission of a wheel excavator.

Background

Chinese patent CN206419442U discloses such an improved transmission assembly, which has the structural characteristics that: the two-shaft speed change gearbox comprises a box body, a two-shaft assembly, a middle shaft assembly and a speed change fork shaft assembly, wherein the two-shaft assembly comprises a two shaft and a fourth fifth-speed gear sleeve, a fourth fifth-speed gear seat, a fifth-speed cone, a fifth-speed gear, a third-speed gear, a first needle bearing, a second third-speed gear sleeve, a second third-speed gear seat, a second gear, a second needle bearing, a third needle bearing, a first speed cone ring, a first reverse speed gear seat, a synchronizer gear seat, a first reverse speed gear sleeve, a needle bearing ring, a fourth needle bearing, a reverse gear, a contact ball bearing, a spacer bush, a speed meter driving gear, a radial ball bearing and a flange which are arranged on the two shaft; the intermediate shaft assembly comprises an intermediate shaft and a first-stage reduction gear, a fifth-speed gear, a third-speed gear and a second-speed gear which are arranged on the intermediate shaft, and two ends of the intermediate shaft are connected with the box body through intermediate bearings; the speed change fork shaft assembly comprises a speed change fork shaft and a gear shift shifting block, a fourth fifth speed change fork, an interlocking plate, a second third speed change fork, a first speed and reverse speed change fork, which are arranged on the speed change fork shaft, wherein a second gear is coaxially arranged on one end face of the reverse gear; the reversing gear 1 is provided with a plurality of tooth bodies which are uniformly distributed along the circumferential direction; the second gear is provided with a plurality of cones which are uniformly distributed along the circumferential direction, the inner wall of the first decelerating gear sleeve is provided with a plurality of back tapers which are uniformly distributed along the circumferential direction, and the plurality of cones are meshed with the plurality of back tapers. Therefore, this structure cannot achieve automatic speed change.

Disclosure of Invention

The invention aims to provide a power gear shifting transmission of a wheel type excavator, which can realize automatic speed change and has a compact structure.

The invention aims to achieve the aim, the power gear-shifting transmission of a wheel excavator comprises a box body, a hydraulic torque converter, a power takeoff, an output gear box, a reverse gear planet row, a forward gear planet row, a third gear planet row, a second gear planet row, a driving shaft I, a driving shaft II and a driven shaft, wherein the hydraulic torque converter which is in transmission connection with an engine is connected with the power takeoff through a power take-off carrier gear, the driving shaft I in the hydraulic torque converter is in transmission connection with one end of the driving shaft II in the box body through a sleeve, the other end of the driving shaft II is connected with the box body through a bearing, a planet carrier II and a bearing, the driving shaft II is sleeved with the reverse gear planet row and the forward gear planet row, the planet carrier I on the reverse gear planet row is connected with a reverse gear brake, a gear ring I on the reverse gear planet row is connected with a planet carrier II on the, the planet carrier II on the forward gear planet row is connected with the planet carrier III on the third gear planet row arranged on the driven shaft, the driven shaft is sleeved with the third gear planet row and the second gear planet row, a gear ring III on the third gear planet row is connected with a third gear brake, a gear ring III is connected with a planet carrier IV on the second gear planet row, a gear ring IV on the second gear planet row is connected with a second gear brake, the driven shaft is also provided with a brake oil cylinder, the brake oil cylinder is connected with the gear ring IV on the second gear planet row through a first gear clutch, the first gear clutch is also connected with the driven shaft through a transmission disc, one end of the driven shaft is arranged in the box body and is connected with the box body through a bearing, the planet carrier III, the planet carrier II and the bearing, and the other end of the driven shaft extends into.

And a columnar bulge is arranged on the other end face of the driving shaft II, an annular groove convenient for placing a sealing ring is arranged on the circumferential surface of the columnar bulge, and an oil way is arranged at the axial position of the driving shaft II so as to be communicated with the oil way on the driven shaft.

And a columnar groove which can be matched with the columnar bulge on the other end face of the driving shaft II is arranged on the end face of the driven shaft arranged in the box body, an oil way is arranged at the axial position of the driven shaft, the oil way is communicated with the oil way on the driving shaft II, and a braking oil way is also arranged at the axial position of the driven shaft, so that the braking oil way is connected with a braking oil cylinder.

The inner hole of the planet carrier II is arranged in a step shape to form a large hole and a small hole, and the inner surface of the outward large hole is provided with a spline which is convenient to be meshed with the planet carrier III.

Be provided with the spline on III surfaces of planet carrier, be convenient for with II internal splines meshing of planet carrier.

The inner surface of the sleeve is provided with a spline, and the outer surface of the sleeve is sleeved with a speed measuring wheel II and is in contact with a sensor II arranged on the box body.

And a spline is arranged on the outer surface of one end of the driving shaft I connected with the sleeve.

And a spline is arranged on the outer surface of one end of the driving shaft II connected with the sleeve.

The transmission disc is connected with the driven shaft through a spline.

The axial section of the gear ring IV is set to be Z-shaped, and splines convenient for mounting a second-gear brake and a first-gear clutch are respectively arranged on the outer surfaces of two ends of the gear ring IV.

After the structure is adopted, as a hydraulic torque converter which is in transmission connection with an engine is connected with a power takeoff through a power takeoff carrier gear, a driving shaft I in the hydraulic torque converter is in transmission connection with one end of a driving shaft II in a box body through a sleeve, the other end of the driving shaft II is connected with the box body through a bearing, a planet carrier II and a bearing, a reverse gear planet row and a forward gear planet row are sleeved on the driving shaft II, the planet carrier I on the reverse gear planet row is connected with a reverse gear brake, a gear ring I on the reverse gear planet row is connected with a planet gear II on the forward gear planet row, a forward gear brake is sleeved on a gear ring II on the forward gear planet row, the planet carrier II on the forward gear planet row is connected with a planet carrier III on a third gear planet row arranged on a driven shaft, a gear ring III on the third gear planet row is connected with a third, a gear ring IV on the second-gear planetary row is connected with a second-gear brake, a brake oil cylinder is further arranged on a driven shaft, the brake oil cylinder is connected with the gear ring IV on the second-gear planetary row through a first-gear clutch, the first-gear clutch is further connected with the driven shaft through a transmission disc, one end of the driven shaft is arranged in a box body and is connected with the box body through a bearing, a planet carrier III, a planet carrier II and a bearing, the other end of the driven shaft extends into an output gear box and is in transmission connection with a bevel gear in the output gear box, and the brake and the clutch are controlled through a plurality of speed measuring wheels, a sensor, a hydraulic pressure, so that the purposes of automatic.

Description of the drawingsthe present invention will be described in further detail below with reference to the accompanying drawings and examples.

Fig. 1 is a front view schematic diagram of a power geared transmission for a wheel excavator according to the present invention.

In the figure: 1. the hydraulic torque converter 2, a driving shaft I3, a speed measuring wheel II 4, a sleeve 5, a driving shaft II 6, a sensor II 7, a planet carrier I8, a gear ring I9, a reverse gear planet row 10, a forward gear planet row 11, a gear ring II 12, a planet gear II 13, a box body 14, a gear ring III 15, a third gear planet row 16, a gear ring IV 17, a second gear planet row 18, a driven shaft 19, a bevel gear 20, an output gear box 21, a first gear clutch 22, a second gear brake 23, a third gear brake 24, a planet carrier III 25, a planet carrier II 26, a forward gear brake 27, a reverse gear brake 28, a power takeoff 29, a power takeoff bridging gear 30, a brake cylinder 31 and a transmission disc.

Detailed description of the inventiona power-shift transmission of a wheel excavator shown in fig. 1 comprises a box body 13, a hydraulic torque converter 1, a power takeoff 28, an output gearbox 20, a reverse gear planetary row 9, a forward gear planetary row 10, a third gear planetary row 15, a second gear planetary row 17, a driving shaft i 2, a driving shaft ii 5 and a driven shaft 18, wherein the hydraulic torque converter 1 which is in transmission connection with an engine is connected with the power takeoff 28 through a power take-off carrier gear 29, the driving shaft i 2 in the hydraulic torque converter 1 is in transmission connection with one end of the driving shaft ii 5 in the box body 13 through a sleeve 4, the other end of the driving shaft ii 5 is connected with the box body 13 through a bearing, a planet carrier ii 25 and a bearing, the driving shaft ii 5 is sleeved with the reverse gear planetary row 9 and the forward gear planetary row 10 to form a total reverse gear and total forward gear region, a planet carrier i 7 on the reverse gear planetary row 9, a gear ring I8 on a reverse gear planet row 9 is connected with a planet gear II 12 on a forward gear planet row 10, a forward gear brake 26 is sleeved on a gear ring II 11 on the forward gear planet row 10, a total reverse gear and total forward gear area is connected with a planet carrier III 24 on a third gear planet row 15 arranged on a driven shaft 18 through a planet carrier II 25 on the forward gear planet row 10, three reverse gears and three forward gears extend out, the driven shaft 18 is sleeved with the third gear planet row 15 and a second gear planet row 17, a gear ring III 14 on the third gear planet row 15 is connected with a third gear brake 23, the gear ring III 14 is connected with a planet carrier IV on the second gear planet row 17, a gear ring IV 16 on the second gear planet row 17 is connected with a second gear brake 22, a brake cylinder 30 is also arranged on the driven shaft 18, and the brake cylinder 30 is connected with the gear ring IV 16 on the second gear planet row 17 through a first gear clutch 21, the first-gear clutch 21 is also connected with the driven shaft 18 through a transmission disc 31, one end of the driven shaft 18 is arranged in the box body 13 and is connected with the box body 13 through a bearing, a planet carrier III 24, a planet carrier II 25 and a bearing, the other end of the driven shaft 18 extends into the output gear box 20 and is in transmission connection with a bevel gear 19 in the output gear box 20, a speed measuring gear and a sensor are also arranged in the output gear box 20, and a speed measuring gear and a sensor are also arranged in the power takeoff 28; a columnar bulge is arranged on the other end face of the driving shaft II 5, an annular groove convenient for placing a sealing ring is arranged on the circumferential surface of the columnar bulge, and an oil way is arranged at the axial position of the driving shaft II 5 and communicated with an oil way on the driven shaft 18; a columnar groove capable of being matched with the columnar bulge on the other end face of the driving shaft II 5 is formed in the end face of the driven shaft 18 arranged in the box body 13, an oil way is arranged at the axial position of the driven shaft 18 and communicated with the oil way on the driving shaft II 5, and a brake oil way is further arranged at the axial position of the driven shaft 18 and connected with a brake oil cylinder 30; the inner hole of the planet carrier II 25 is arranged in a step shape to form a large hole and a small hole, and the inner surface of the outward large hole is provided with a spline which is convenient to be meshed with the planet carrier III 24; a spline is arranged on the outer surface of the planet carrier III 24, so that the planet carrier III is conveniently meshed with the internal spline of the planet carrier II 25; a spline is arranged on the inner surface of the sleeve 4, and a tachometer wheel II 3 is sleeved on the outer surface of the sleeve 4 and is in contact with a sensor II 6 arranged on the box body 13; a spline is arranged on the outer surface of one end of the driving shaft I2 connected with the sleeve 4; a spline is arranged on the outer surface of one end of the driving shaft II 5 connected with the sleeve 4; the transmission disc 31 is connected with the driven shaft 18 through a spline; the axial section of the gear ring IV 16 is set to be Z-shaped, and splines convenient for mounting a second-gear brake 22 and a first-gear clutch 21 are respectively arranged on the outer surfaces of two ends of the gear ring IV 16.

When the power gear shifting transmission of the wheel excavator is in a working state, the engine drives the pump wheel in the hydraulic torque converter 1 to rotate, the shell of the pump wheel is provided with a power take-off driving gear, the power take-off driving gear transmits power to a power take-off carrier gear 29, the power take-off carrier gear 29 simultaneously transmits power to two power take-off gears, the power take-off gears are provided with power take-off ports, and the power take-off ports can be provided with hydraulic pumps required by operation, meanwhile, the rotation of the pump wheel of the hydraulic torque converter 1 drives the hydraulic oil in the hydraulic torque converter 1 to rotate, the rotating hydraulic oil impacts the turbine of the hydraulic torque converter 1 to enable the turbine to rotate along with the hydraulic oil, at the moment, the hydraulic oil enables the flowing hydraulic oil to impact the turbine together again under the guiding action of the guide wheel, the driving torque obtained by the turbine is increased in proportion, therefore, the turbine drives the driving shaft I2 to rotate, the driving shaft I2 drives the driving shaft II 5 to rotate, and the driving shaft II 5 simultaneously drives the reverse gear sun gear and the forward gear sun gear to rotate.

When the reverse gear needs to be braked, the reverse gear brake 27 is braked, the forward gear brake 26 is released, the planet carrier I7 is fixed and does not rotate, at the moment, the gear ring I8 rotates reversely, the planet carrier II 25 of the forward gear also rotates reversely, and the reverse gear of the wheel type excavator is realized; when the wheel type excavator needs to move forwards, the forward gear brake 26 and the reverse gear brake 27 are braked, the gear ring II 11 of the forward gear is braked, and the planet carrier II 25 of the forward gear rotates forwards at the moment, so that the wheel type excavator moves forwards.

The three forward gears and the three reverse gears are realized as follows: after the forward or reverse total gear is realized, when a third gear brake 23 is braked, a third gear ring III 14 is fixed, power is input from a third gear planet carrier III 24 and then output from a third gear sun gear through a driven shaft 18, and the wheel type excavator runs according to the speed ratio of the third gear; when the second-gear brake 22 is braked, the second-gear ring IV 16 is fixed, at the moment, the second-gear planet row 17 and the third-gear planet row 15 are combined into a complex planet row, power is input from the third-gear planet carrier III 24, power is output from the driven shaft 18 through the third-gear ring III 14, the second-gear planet carrier IV and the second-gear sun gear, and the wheel type excavator runs according to the second-gear speed ratio; when the first-gear clutch 21 is locked, the driven shaft 18, the transmission disc 31, the first-gear clutch 21, the second-gear planet row 17 and the third-gear ring III 14 are locked into a whole, the transmission is direct transmission, the speed ratio is 1, and the first-gear driving of the wheel type excavator is realized. Therefore, three gears are realized when the bicycle is driven forwards and three gears are realized when the bicycle is driven backwards.