Power transmission device

Abstract

The utility model discloses a power transmission device which comprises a power takeoff and a clutch, the power takeoff comprises a shell, an input shaft mounting hole is formed in the shell, an input shaft is rotatably arranged in the input shaft mounting hole, and a hollow gear shaft is fixedly sleeved outside the input shaft; the clutch comprises a main driven disc arranged between an external engine flywheel and a pressing disc, a coaxial auxiliary driven disc is arranged on the axial rear side of the main driven disc and fixed to a clutch cover, the clutch cover is connected with the external engine flywheel, and the axial front end of the hollow gear shaft is arranged in a center hole of the auxiliary driven disc. The main clutch and the auxiliary clutch are arranged in the clutch, and the input shaft and the hollow gear shaft which are coaxial are arranged at the input end of the power takeoff, so that power from an engine can be transmitted to the transmission and the power takeoff respectively, and the transmission and the power takeoff are mutually independent and do not influence each other; the technical problem that in the prior art, a power takeoff and a transmission cannot work independently is solved.

Description

Technical Field

[0001] The utility model belongs to the field of automobiles and relates to a clutch and a power take-off, in particular to a power transmission device. Background Art

[0002] In recent years, special vehicle manufacturers have entered a period of rapid development, and the demand for power take-offs has become increasingly strong. The operation of the power take-offs on the market is related to the gearbox, or in other words, there is a correlation between the power take-off and the gearbox, and the operation of the power take-off is inseparable from the gearbox. There is an urgent need for a power transmission device that makes the operation of the power take-off and the gearbox have no connection. The two can work independently without affecting each other, and can complete their respective power transmission and function realization. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a power transmission device to solve the technical problem in the prior art that the power take-off and the transmission cannot work independently.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A power transmission device comprises a power take-off and a clutch, wherein the power take-off comprises a housing, the housing is provided with an input shaft mounting hole, the input shaft is rotatably arranged in the input shaft mounting hole, and an external fixed sleeve of the input shaft is provided with a hollow gear shaft;

[0006] The clutch includes a master driven plate arranged between an external engine flywheel and a pressure plate, a coaxial slave driven plate is arranged on the axial rear side of the master driven plate, the slave driven plate is fixed on a clutch cover, and the clutch cover is connected to the external engine flywheel, the axial front end of the hollow gear shaft is arranged in the center hole of the slave driven plate, and the axial front end of the input shaft is arranged in the center hole of the master driven plate.

[0007] The utility model also includes the following technical features:

[0008] The housing is also provided with a second shaft mounting hole and an output shaft mounting hole, in which the second shaft mounting hole is rotatably provided with the second shaft, on which the second shaft is sequentially sleeved with a second shaft gear and a second shaft sliding gear in the axial direction, and the second shaft sliding gear is meshed with the axial rear end of the hollow gear shaft; in which the output shaft mounting hole is rotatably provided with an output shaft, on which an output shaft gear is provided, and the output shaft gear is meshed with the second shaft gear;

[0009] The second shafts are spline-connected with the second shaft gears and the second shaft sliding gears, and shaft shoulders are provided on the second shafts at the axial rear ends of the second shaft gears.

[0010] A gear pump is arranged at the axial front end of the output shaft, and a skeleton oil seal assembly is sleeved at the axial rear end of the output shaft.

[0011] A first bearing is arranged between the outer wall of the axial front end of the hollow gear shaft and the inner wall of the input shaft mounting hole; a second bearing is respectively arranged between the outer walls at both ends of the two shafts and the two shaft mounting holes; and a third bearing is respectively arranged between the outer walls at both ends of the output shaft and the output shaft mounting holes.

[0012] A flange is sleeved between the output shaft and the skeleton oil seal assembly.

[0013] The auxiliary driven plate is connected to the clutch cover by bolts.

[0014] The center hole of the auxiliary driven plate is connected to the axial front end of the hollow gear shaft through a spline, and the center hole of the main driven plate is connected to the axial front end of the input shaft through a spline.

[0015] An oil seal is arranged between the outer wall at the axial rear end of the input shaft and the input shaft mounting hole.

[0016] A shaft bearing cover is sleeved on the hollow gear shaft, and the shaft bearing cover is fixedly connected to the outer wall of the shell.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] (I) In the utility model, by arranging a main clutch and a sub-clutch in the clutch and arranging a coaxial input shaft and a hollow gear shaft structure at the input end of the power take-off, the power from the engine can be transmitted to the transmission and the power take-off respectively, and the two are independent of each other and do not affect each other, thereby solving the technical problem in the prior art that the power take-off and the transmission cannot work separately.

[0019] (II) The power transmitted to the power take-off of the utility model is directly transmitted through the flywheel, and the intermediate loss is very small, so the power transmission efficiency of the power take-off is very high. It can be used when the vehicle is moving or parked. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the power take-off in the utility model;

[0021] Figure 2 A schematic diagram of the structure of the clutch in the utility model;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the input shaft

[0023] Figure 4 for Figure 1Schematic diagram of the structure of the hollow gear shaft

[0024] The meanings of the various numbers in the figure are: power take-off 1, clutch 2;

[0025] Housing 101, input shaft 102, hollow gear shaft 103, first shaft bearing cap 104, second shaft 105, second shaft gear 106, second shaft sliding gear 107, output shaft 108, output shaft gear 109, shaft shoulder 1010, gear pump 1011, skeleton oil seal assembly 1012, first bearing 1013, second bearing 1014, third bearing 1015, flange 1016, oil seal 1017;

[0026] Pressure plate 201 , main driven plate 202 , auxiliary driven plate 203 , clutch cover 204 , bolts 205 , bolt holes 206 .

[0027] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0028] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0029] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0030] The utility model provides a power transmission device, including a power take-off 1 and a clutch 2. The power take-off 1 includes a housing 101, the housing 101 is provided with an input shaft mounting hole, an input shaft 102 is rotatably arranged in the input shaft mounting hole, and an external fixed sleeve of the input shaft 102 is provided with a hollow gear shaft 103;

[0031] The clutch 2 includes a master driven disc 202 arranged between an external engine flywheel and a pressure plate 201, a coaxial slave driven disc 203 is arranged on the axial rear side of the master driven disc 202, the slave driven disc 203 is fixed on a clutch cover 204, and the clutch cover 204 is connected to the external engine flywheel, the axial front end of the hollow gear shaft 103 is arranged in the center hole of the slave driven disc 203, and the axial front end of the input shaft 102 is arranged in the center hole of the master driven disc 202.

[0032] In the above technical solution, the action of the clutch pedal (i.e. Figure 2The force is applied in the F direction) and the engagement or separation of the pressure plate 201 (i.e., the horizontal movement of the pressure plate 201) causes the engine flywheel to contact or separate from the master and slave plates 202. When in contact, the master and slave plates 202 are driven to rotate, which in turn drives the input shaft 102 to rotate, transmitting power to the external transmission, thereby achieving the continuity or interruption of power transmission between the engine flywheel and the transmission;

[0033] When the engine is running, the power is transmitted to the auxiliary driven disc 203 through the flywheel of the transmitter, and the auxiliary driven disc 203 drives the hollow gear shaft 103 to rotate, thereby transmitting the power to the power take-off 1;

[0034] Through the action of the main driven disc 202 and the auxiliary driven disc 203, the power from the engine is divided into two paths, which are respectively transmitted to the external transmission and the power take-off 1, and the two do not affect each other. And because the power transmitted to the power take-off is directly transmitted through the flywheel, there is no loss in the middle.

[0035] Preferably, the clutch cover 204 is connected to the external engine flywheel by bolts through the bolt holes 206 .

[0036] Specifically, the housing 101 is further provided with a second shaft mounting hole and an output shaft mounting hole, in which a second shaft 105 is rotatably arranged, on which a second shaft gear 106 and a second shaft sliding gear 107 are sequentially sleeved along the axial direction, and the second shaft sliding gear 107 is meshed with the axial rear end of the hollow gear shaft 103; in the output shaft mounting hole, an output shaft 108 is rotatably arranged, on which an output shaft gear 109 is arranged, and the output shaft gear 109 is meshed with the second shaft gear 106.

[0037] In the above technical solution, the power of the engine is transmitted to the input shaft 102 and the hollow gear shaft 103 respectively through the main driven plate and the auxiliary driven plate of the clutch. The power of the input shaft 102 is transmitted to the external transmission, while the power of the hollow gear shaft 103 is transmitted to the inside of the power take-off 1. The second-axis sliding gear 107 is moved to engage with the axial rear end of the hollow gear shaft 103, and then the power is transmitted to the second shaft 105. Through the meshing transmission of the second-axis gear 106 and the output shaft gear 109, the output shaft 108 is driven to rotate, and the power is output.

[0038] Specifically, the second shaft 105 and the second shaft gear 106 and the second shaft sliding gear 107 are all spline-connected, and a shaft shoulder 1010 is provided on the second shaft 105 at the axial rear end of the second shaft gear 106 .

[0039] In the above technical solution, the spline connection ensures the radial limitation of the second shaft gear 106 and the second shaft sliding gear 107 on the second shaft 105, and the shaft shoulder 1010 ensures the axial limitation of the second shaft gear 106.

[0040] Specifically, a gear pump 1011 is disposed at the axial front end of the output shaft 108 , and a skeleton oil seal assembly 1012 is sleeved at the axial rear end of the output shaft 108 .

[0041] In the above technical solution, the skeleton oil seal assembly 1012 is used to prevent oil leakage and dust, and the gear pump 1011 is used to improve the working conditions of the internal contact parts of the power take-off, and the lubricating oil pump at the bottom of the power take-off housing is sucked up through the oil pipe for lubrication.

[0042] Specifically, a first bearing 1013 is arranged between the outer wall of the axial front end of the hollow gear shaft 103 and the inner wall of the input shaft mounting hole; a second bearing 1014 is respectively arranged between the outer walls at both ends of the second shaft 105 and the second shaft mounting holes; a third bearing 1015 is respectively arranged between the outer walls at both ends of the output shaft 108 and the output shaft mounting holes.

[0043] In the above technical solution, the purpose of the first bearing 1013, the second bearing 1014 and the third bearing 1015 is to support and realize the rotation of the corresponding shaft, and to limit the axial direction of the corresponding shaft.

[0044] Specifically, a flange 1016 is sleeved between the output shaft 108 and the skeleton oil seal assembly 1012 for connecting with external components to transmit power.

[0045] Specifically, the auxiliary driven plate 203 is connected to the clutch cover 204 via bolts 205 .

[0046] Specifically, the center hole of the auxiliary driven plate 203 is connected to the axial front end of the hollow gear shaft 103 through a spline, and the center hole of the main driven plate 202 is connected to the axial front end of the input shaft 102 through a spline.

[0047] Specifically, an oil seal 1017 is provided between the outer wall of the axial rear end of the input shaft 102 and the input shaft mounting hole.

[0048] In the above technical solution, an oil seal 1017 is provided at the rear end of the input shaft 102. The oil seal is enclosed in the gap between the input shaft and the housing, separating the power take-off and the transmission, ensuring that the cavities are not connected, and playing a sealing role.

[0049] Specifically, a shaft bearing cover 104 is sleeved on the hollow gear shaft 103 , and the shaft bearing cover 104 is fixedly connected to the outer wall of the housing 101 .

[0050] In the above technical solution, a shaft bearing cover 104 is assembled on the outer wall of the hollow gear shaft 103 , and the shaft bearing cover 104 cooperates with the release bearing 207 during assembly to support the movement of the release bearing 207 , while also providing certain protection for the hollow gear shaft 103 .

Claims

1. A power transmission device, comprising a power take-off (1) and a clutch (2), wherein the power take-off (1) comprises a housing (101), wherein the housing (101) is provided with an input shaft mounting hole, and wherein: An input shaft (102) is rotatably arranged in the input shaft mounting hole, and an external fixed sleeve of the input shaft (102) is provided with a hollow gear shaft (103); The clutch (2) comprises a master driven disc (202) arranged between an external engine flywheel and a pressure plate (201); a coaxial slave driven disc (203) is arranged on the axial rear side of the master driven disc (202); the slave driven disc (203) is fixed on a clutch cover (204); the clutch cover (204) is connected to the external engine flywheel; the axial front end of the hollow gear shaft (103) is arranged in the center hole of the slave driven disc (203); and the axial front end of the input shaft (102) is arranged in the center hole of the master driven disc (202).

2. The power transmission device according to claim 1, characterized in that: The housing (101) is also provided with a two-shaft mounting hole and an output shaft mounting hole. A two-shaft (105) is rotatably arranged in the two-shaft mounting hole. A two-shaft gear (106) and a two-shaft sliding gear (107) are sequentially sleeved on the two-shaft (105) along the axial direction. The two-shaft sliding gear (107) meshes with the axial rear end of the hollow gear shaft (103). An output shaft (108) is rotatably arranged in the output shaft mounting hole. An output shaft gear (109) is arranged on the output shaft (108). The output shaft gear (109) meshes with the two-shaft gear (106).

3. The power transmission device according to claim 2, characterized in that: The second shaft (105) is spline-connected to the second shaft gear (106) and the second shaft sliding gear (107), and a shaft shoulder (1010) is provided on the second shaft (105) at the axial rear end of the second shaft gear (106).

4. The power transmission device according to claim 2, characterized in that: A gear pump (1011) is disposed at the axial front end of the output shaft (108), and a skeleton oil seal assembly (1012) is sleeved at the axial rear end of the output shaft (108).

5. The power transmission device according to claim 2, characterized in that: A first bearing (1013) is arranged between the outer wall of the axial front end of the hollow gear shaft (103) and the inner wall of the input shaft mounting hole; a second bearing (1014) is respectively arranged between the outer walls at both ends of the two shafts (105) and the two shaft mounting holes; and a third bearing (1015) is respectively arranged between the outer walls at both ends of the output shaft (108) and the output shaft mounting holes.

6. The power transmission device according to claim 4, characterized in that: A flange plate (1016) is sleeved between the output shaft (108) and the skeleton oil seal assembly (1012).

7. The power transmission device according to claim 1, characterized in that: The auxiliary driven plate (203) is connected to the clutch cover (204) via bolts (205).

8. The power transmission device according to claim 1, characterized in that: The center hole of the auxiliary driven disc (203) is connected to the axial front end of the hollow gear shaft (103) via a spline, and the center hole of the main driven disc (202) is connected to the axial front end of the input shaft (102) via a spline.

9. The power transmission device according to claim 1, characterized in that: An oil seal (1017) is provided between the outer wall of the axial rear end of the input shaft (102) and the input shaft mounting hole.

10. The power transmission device according to claim 1, characterized in that: A shaft bearing cover (104) is sleeved on the hollow gear shaft (103), and the shaft bearing cover (104) is fixedly connected to the outer wall of the housing (101).

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