Clutch connecting device for gearbox power take-off port

Abstract

The invention relates to a gearbox, and provides a clutch connecting device for a gearbox power take-off port in order to solve the problems that an oil pump on an existing power take-off port still consumes the power of an engine when not working, and the like, the clutch connecting device comprises a power take-off port output gear, a connecting shaft and a clutch shaft, and the gear end of the power take-off port output gear is connected with a gearbox shell; the output end is connected with the oil pump; a mounting groove is formed in the circumference of the inner side of the power take-off port output gear; the output end of the oil pump is of a hollow cylinder structure, a spline transition sleeve is arranged in the hollow cylinder in a sleeved mode, and an inner spline matched with an outer spline of the oil pump is arranged on the circumference of the inner side of the spline transition sleeve. An annular groove is formed in the circumferential face of the outer side of the spline transition sleeve, at least one spherical groove is formed in the annular groove, and a clutch shaft mounting hole is formed in the outer circumference of the hollow cylinder. A clutch shaft spherical surface matched with the spherical groove is arranged at one end of the clutch shaft, and the clutch shaft spherical surface penetrates through the clutch shaft mounting hole and then is embedded into the spherical groove in the spline transition sleeve.

Description

Technical Field

[0001] The invention relates to a gearbox, and in particular to a clutch connection device for a power take-off port of a gearbox. Background Art

[0002] Existing gearboxes are generally provided with a power take-off, which is a group or multiple groups of speed gears connected to the input shaft of the gearbox and can output power to an external working device.

[0003] There are different categories of power take-offs. Some power take-offs are equipped with an oil pump on the power take-off port, and the power take-off provides continuous power to the oil pump. However, for different application scenarios, the working state of the oil pump on the power take-off is different. When the oil pump on the power take-off needs to work intermittently, the power take-off provides power to the oil pump in the working state to drive it to work. When the oil pump is not needed to work, manual disassembly operation is required. If the oil pump is not disassembled, the oil pump will consume engine power. At the same time, the operation process of repeatedly disassembling and assembling the oil pump on the power take-off port is cumbersome, time-consuming and labor-intensive, resulting in a serious waste of human resources. Therefore, it is necessary to find a device that can make the power take-off drive the oil pump to work when the oil pump is needed, and disengage the power take-off from the oil pump to prevent it from working when the oil pump is not needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that when the oil pump on the existing power take-off port is in an intermittent working environment, the oil pump will still consume engine power when it is not working, and the manual disassembly operation between the power take-off port and the oil pump in the non-working state is cumbersome, time-consuming and labor-intensive. A clutch connection device for the power take-off port of the gearbox is proposed.

[0005] To achieve the above objectives, the technical solution proposed by the present invention is:

[0006] A clutch connection device for a power take-off port of a gearbox, characterized in that it comprises a power take-off port output gear, a connecting shaft and a clutch shaft, wherein the gear end of the power take-off port output gear is connected to the gearbox housing, and the output end of the power take-off port output gear is connected to an oil pump;

[0007] The outer circumference of the gear end of the power take-off port output gear is provided with external teeth meshing with the power take-off port input gear, and the inner circumference thereof is provided with a mounting groove for mounting a connecting shaft, and the power take-off port output gear is connected to the gearbox housing through the connecting shaft;

[0008] The output end of the output gear of the power take-off port is a hollow cylindrical structure, a spline transition sleeve is arranged in the hollow cylinder, and an inner spline matching the outer spline of the oil pump is arranged on the inner circumference of the spline transition sleeve; an annular groove is arranged on the outer circumference of the spline transition sleeve, and at least one spherical groove is arranged in the annular groove; a clutch shaft mounting hole is arranged on the outer circumference of the hollow cylinder;

[0009] A clutch shaft spherical surface matched with the spherical groove is arranged on one end of the clutch shaft. The end of the clutch shaft provided with the clutch shaft spherical surface passes through the clutch shaft mounting hole and is embedded in the spherical groove on the spline transition sleeve. The relative position of the clutch shaft spherical surface and the spherical groove is controlled by the clutch shaft, thereby controlling the power transmission relationship between the power take-off port output gear, the clutch shaft and the spline transition sleeve.

[0010] Furthermore, the two ends of the clutch shaft are respectively a large cylindrical end and a small cylindrical end, which are connected by a transition cone, and a clutch shaft spherical surface matching the spherical groove is provided on one end of the small cylindrical end away from the transition cone;

[0011] The small cylindrical end of the clutch shaft passes through the clutch shaft mounting hole and is embedded in the spherical groove. The large cylindrical end of the clutch shaft is threadedly connected to the clutch shaft mounting hole. The relative position relationship between the large cylindrical end of the clutch shaft and the clutch shaft mounting hole is adjusted by rotation, so that the clutch shaft spherical surface on the small cylindrical end of the clutch shaft and the spherical groove are closed or separated, thereby controlling the power transmission relationship between the power take-off port output gear, the clutch shaft and the spline transition sleeve.

[0012] Furthermore, the height of the small cylindrical end of the clutch shaft is the same as the depth of the groove.

[0013] Furthermore, an anti-wear bushing is provided on the outer circumferential surface of the spline transition sleeve to prevent wear on the output end of the output gear of the power take-off port.

[0014] Furthermore, the number of the clutch shaft mounting holes opened on the outer circumference of the output end of the power take-off port output gear is consistent with the number of the spherical grooves.

[0015] Furthermore, four spherical grooves are evenly arranged in the annular groove, and a clutch shaft mounting hole is arranged at a position corresponding to each spherical groove on the outer circumference of the output end of the power take-off output gear.

[0016] Furthermore, a hexagonal inner hole is provided on the large cylindrical end of the clutch shaft.

[0017] Furthermore, the height of the spherical surface of the clutch shaft is not greater than the depth of the groove.

[0018] Furthermore, the connecting shaft includes a fixed shaft and a bearing sleeved on the fixed shaft, the bearing is installed in a mounting groove on the power take-off port output gear, and the fixed shaft is fixedly connected to the gearbox housing by bolts, so as to fix the power take-off port output gear on the gearbox housing.

[0019] Beneficial effects of the present invention:

[0020] [1] The clutch connection device for the power take-off port of a transmission of the present invention has a simple structure and strong stability. It effectively solves the problem of whether the power of the power take-off is continuously output or interrupted when the oil pump on the power take-off port is in an intermittent working environment. It provides continuous power for the oil pump that needs to work all the time, and can also provide intermittent power for the oil pump that needs to work intermittently, saving engine power, effectively improving the applicability of the power take-off of the transmission, and having strong practicality.

[0021] [2] The present invention controls the power transmission between the output end of the output gear of the power take-off port, the spline transition sleeve and the oil pump through the clutch shaft, thereby realizing continuous or intermittent power transmission, avoiding repeated disassembly and assembly of the oil pump, saving manpower and material resources, improving work efficiency, and avoiding useless consumption of engine power.

[0022] [3] The present invention sets a threaded connection between the clutch shaft and the clutch shaft mounting hole, which not only facilitates manual control of power transmission between the output end of the power take-off output gear, the spline transition sleeve and the oil pump, but also ensures the stability and reliability of the clutch connection device.

[0023] [4] The present invention has a spherical groove in the annular groove, which can not only realize the staggered combination of the clutch shaft and the spline transition sleeve, but also ensure the connection and clamping effect of the entire device after the combination, while improving the reliability and stability of the transmitted torque.

[0024] [5] The present invention provides an anti-wear bushing on the outer circumferential surface of the spline transition sleeve to ensure that when the output end of the power take-off port output gear, the spline transition sleeve and the oil pump are in the power interruption output, the relative rotation between the output end of the power take-off port output gear and the spline transition sleeve will not cause excessive wear to the power take-off port output gear, thereby effectively improving the service life of the clutch connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of a clutch connection device for a power take-off port of a transmission according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the output gear of the power take-off port in an embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a spline transition sleeve in an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the clutch shaft in an embodiment of the present invention;

[0029] Reference numerals:

[0030] 1-power take-off port output gear, 2-connecting shaft, 3-clutch shaft, 4-gearbox housing, 5-oil pump, 6-spherical groove, 7-power take-off port input gear, 8-external teeth, 9-mounting groove, 10-spline transition sleeve, 11-internal spline, 12-annular groove, 13-clutch shaft mounting hole, 14-large cylindrical end, 15-small cylindrical end, 16-transition frustum, 17-clutch shaft spherical surface, 18-fixed shaft, 19-bearing. DETAILED DESCRIPTION

[0031] like Figure 1 As shown, a clutch connection device for a power take-off port of a gearbox comprises a power take-off port output gear 1, a connecting shaft 2 and a clutch shaft 3, wherein the gear end of the power take-off port output gear 1 is connected to a gearbox housing 4, and the output end of the power take-off port output gear 1 is connected to an oil pump 5;

[0032] The outer circumference of the gear end of the power take-off port output gear 1 is provided with external teeth 8 meshing with the power take-off port input gear 7, and the inner circumference thereof is provided with a mounting groove 9 for mounting the connecting shaft 2. The power take-off port output gear 1 is fixedly connected to the gearbox housing 4 through the connecting shaft 2;

[0033] The connecting shaft 2 includes a fixed shaft 18 and a bearing 19 sleeved on the fixed shaft 18. The bearing 19 is installed in the mounting groove 9 on the power take-off output gear 1. The fixed shaft 18 is fixedly connected to the gearbox housing 4 by bolts, and is used to install the power take-off output gear 1 on the gearbox housing 4.

[0034] like Figure 2 As shown, the output end of the power take-off output gear 1 is a hollow cylindrical structure, a spline transition sleeve 10 is provided in the hollow cylinder, and an inner spline 11 matching the outer spline of the oil pump 5 is provided on the inner circumference of the spline transition sleeve 10; Figure 3As shown, an annular groove 12 is provided on the outer circumferential surface of the spline transition sleeve 10, and a spherical groove 6 is arranged in the annular groove 12; a clutch shaft mounting hole 13 is provided on the outer circumference of the hollow cylinder, and a clutch shaft spherical surface 17 matched with the spherical groove 6 is provided on one end of the clutch shaft 3, and the end of the clutch shaft 3 provided with the clutch shaft spherical surface 17 passes through the clutch shaft mounting hole 13 and enters the annular groove 12, and the relative position relationship between the output end of the power take-off output gear 1 and the spline transition sleeve 10 is adjusted, so that the clutch shaft spherical surface 17 is embedded in the spherical groove 6 on the spline transition sleeve 10, so that a power transmission relationship is established between the power take-off output gear 1, the clutch shaft 3 and the spline transition sleeve 10; an anti-wear bushing is provided on the outer circumferential surface of the spline transition sleeve 10, which is used to prevent wear when the output end of the power take-off output gear 1 and the spline transition sleeve 10 rotate relative to each other.

[0035] like Figure 4 As shown, the two ends of the clutch shaft 3 are respectively a large cylindrical end 14 and a small cylindrical end 15, which are connected by a transition cone 16. A clutch shaft spherical surface 17 that is compatible with the spherical groove 6 is provided on the end of the small cylindrical end 15 away from the transition cone 16, and the height of the small cylindrical end 15 is the same as the depth of the annular groove 12; the small cylindrical end 15 of the clutch shaft 3 passes through the clutch shaft mounting hole 13 and enters the annular groove 12, and the large cylindrical end 14 of the clutch shaft 3 is threadedly connected with the clutch shaft mounting hole 13. By rotating the relative position relationship between the large cylindrical end 14 of the clutch shaft 3 and the clutch shaft mounting hole 13, the clutch shaft spherical surface 17 on the small cylindrical end 15 of the clutch shaft 3 and the spherical groove 6 are closed or separated.

[0036] When power transmission is required between the output end of the power take-off output gear 1 and the oil pump 5, the clutch shaft 3 is rotated by a wrench through the hexagonal hole opened on the large cylindrical end 14 of the clutch shaft 3, so that the spherical surface 17 end of the clutch shaft passes through the clutch shaft mounting hole 13 and enters the annular groove 12 on the spline transition sleeve 10, and the relative position relationship between the output end of the power take-off output gear 1 and the spline transition sleeve 10 is adjusted so that the clutch shaft spherical surface 17 on the small cylinder of the clutch shaft 3 is embedded in the spherical groove 6, and the clutch shaft 3 is continued to be rotated so that the clutch shaft spherical surface 17 is completely fitted with the spherical groove 6; at this time, the power transmission route between the power take-off input gear 7, the power take-off output gear 1 and the oil pump 5 is: power take-off input gear 7→power take-off output gear 1→clutch shaft 3→spline transition sleeve 10→spline shaft of the oil pump 5, and the oil pump 5 works normally and consumes the power of the engine.

[0037] When there is no need for power transmission between the output end of the power take-off output gear 1 and the oil pump 5, the clutch shaft 3 is rotated in the opposite direction through the hexagonal hole opened on the large cylindrical end 14 of the clutch shaft 3 by a wrench, so that the clutch shaft spherical surface 17 on the small cylindrical body of the clutch shaft 3 is separated from the spherical groove 6, and the clutch shaft 3 is continued to be rotated so that the clutch shaft spherical surface 17 completely enters the annular groove 12, which can not only prevent the spline transition sleeve 10 from moving left and right along the axial direction, but also does not affect the relative rotation between the output end of the output gear 1 and the spline transition sleeve 10; at this time, the power transmission route between the power take-off input gear 7, the power take-off output gear 1 and the oil pump 5 is: power take-off input gear 7→power take-off output gear 1→clutch shaft 3, and the power between the clutch shaft 3 and the spline transition sleeve 10 is in a disconnected state, so that the spline transition sleeve 10 and the spline shaft of the oil pump 5 do not rotate with the power take-off output gear 1, the oil pump 5 does not work, and does not consume the power of the engine.

Claims

1. A clutch connection device for a power take-off port of a gearbox, characterized in that: It comprises a power take-off port output gear (1), a connecting shaft (2) and a clutch shaft (3), wherein the gear end of the power take-off port output gear (1) is connected to a gearbox housing (4), and the output end of the power take-off port output gear (1) is connected to an oil pump (5); The outer circumference of the gear end of the power take-off port output gear (1) is provided with external teeth (8) meshing with the power take-off port input gear (7), and the inner circumference thereof is provided with a mounting groove (9) for mounting the connecting shaft (2), and the power take-off port output gear (1) is connected to the gearbox housing (4) via the connecting shaft (2); The output end of the power take-off output gear (1) is a hollow cylindrical structure, a spline transition sleeve (10) is arranged inside the hollow cylinder, and an inner spline (11) matching the outer spline of the oil pump (5) is arranged on the inner circumference of the spline transition sleeve (10); an annular groove (12) is arranged on the outer circumference of the spline transition sleeve (10), and at least one spherical groove (6) is arranged in the annular groove (12); a clutch shaft mounting hole (13) is arranged on the outer circumference of the hollow cylinder; A clutch shaft spherical surface (17) matched with the spherical groove (6) is arranged on one end of the clutch shaft (3); the end of the clutch shaft (3) provided with the clutch shaft spherical surface (17) passes through the clutch shaft mounting hole (13) and is embedded in the spherical groove (6) on the spline transition sleeve (10); the relative position of the clutch shaft spherical surface (17) and the spherical groove (6) is controlled by the clutch shaft (3), thereby controlling the power transmission relationship between the power take-off output gear (1), the clutch shaft (3) and the spline transition sleeve (10).

2. A clutch connection device for a power take-off port of a transmission according to claim 1, characterized in that: The two ends of the clutch shaft (3) are respectively a large cylindrical end (14) and a small cylindrical end (15), which are connected via a transition truncated cone (16); a clutch shaft spherical surface (17) adapted to the spherical groove (6) is provided on the end of the small cylindrical end (15) away from the transition truncated cone (16); The small cylindrical end (15) of the clutch shaft (3) passes through the clutch shaft mounting hole (13) and is then embedded in the spherical groove (6). The large cylindrical end (14) of the clutch shaft (3) is threadedly connected to the clutch shaft mounting hole (13). By rotating and adjusting the relative position relationship between the large cylindrical end (14) of the clutch shaft (3) and the clutch shaft mounting hole (13), the clutch shaft spherical surface (17) on the small cylindrical end (15) of the clutch shaft (3) and the spherical groove (6) are closed or separated, thereby controlling the power transmission relationship between the power take-off output gear (1), the clutch shaft (3) and the spline transition sleeve (10).

3. A clutch connection device for a power take-off port of a transmission according to claim 2, characterized in that: The height of the small cylindrical end (15) of the clutch shaft (3) is the same as the depth of the groove (12).

4. A clutch connection device for a power take-off port of a transmission according to claim 3, characterized in that: An anti-wear bushing is provided on the outer circumferential surface of the spline transition sleeve (10) to prevent wear on the output end of the power take-off output gear (1).

5. A clutch connection device for a power take-off port of a transmission according to claim 4, characterized in that: The number of the clutch shaft mounting holes (13) formed on the outer circumference of the output end of the power take-off output gear (1) is consistent with the number of the spherical grooves (6).

6. A clutch connection device for a power take-off port of a transmission according to claim 5, characterized in that: Four spherical grooves (6) are evenly arranged in the annular groove (12), and a clutch shaft mounting hole (13) is arranged at a position corresponding to each spherical groove (6) on the outer circumference of the output end of the power take-off output gear (1).

7. A clutch connection device for a power take-off port of a transmission according to claim 6, characterized in that: The large cylindrical end (14) of the clutch shaft (3) is provided with an inner hexagonal hole.

8. A clutch connection device for a power take-off port of a transmission according to claim 7, characterized in that: The height of the clutch shaft spherical surface (17) is no greater than the depth of the groove (12).

9. The clutch connection device for a power take-off port of a transmission according to claim 1, characterized in that: The connecting shaft (2) comprises a fixed shaft (18) and a bearing (19) sleeved on the fixed shaft (18); the bearing (19) is installed in a mounting groove (9) on the power take-off output gear (1); and the fixed shaft (18) is fixedly connected to the gearbox housing (4) by bolts.

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