Central drive speed reducer for sprinkling irrigation vehicle

Abstract

The utility model provides a central drive speed reducer for a sprinkling irrigation vehicle, and belongs to the technical field of speed reducers. The central drive speed reducer solves the technical problem that an existing central drive speed reducer for a sprinkling irrigation vehicle is large in size and affects installation. The central drive speed reducer for the sprinkling irrigation vehicle comprises a motor shell, a rotor, a stator and a rotating shaft are arranged in the motor shell, the motor shell is directly and fixedly connected with a reduction gearbox shell, one end of the rotating shaft extends into the reduction gearbox shell and is in meshing transmission with a first-stage gear, and the first-stage gear is fixed to a first-stage wheel shaft. The primary wheel shaft is in meshing transmission with the secondary gear, the secondary gear is fixed on the secondary wheel shaft, two ends of the secondary wheel shaft respectively extend out of the reduction gearbox shell, and the axes of the rotating shaft, the primary wheel shaft and the secondary wheel shaft are not on the same straight line. The gear reducer is adopted, the mass can be reduced, the size is reduced, and installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and particularly refers to a central drive speed reducer for a sprinkler truck. Background Technique

[0002] The driving speed reducer for an agricultural sprinkler generally adopts a worm and worm gear transmission device. The worm and worm gear speed reducer is a mechanical speed reduction transmission control device with large torque, large speed ratio, low noise and high stability. However, the biggest disadvantage of the worm and worm gear during its transmission process is low efficiency. In order to improve the efficiency, a gear speed reducer is also adopted. However, the gear speed reducer itself is large in volume and heavy in mass. Moreover, when the reduction gearbox is installed with the motor using a flange connection, the volume is further increased, which affects the installation. How to make the central drive speed reducer for a sprinkler truck adopt a gear speed reducer and can reduce the mass and shrink the volume for easy installation. Summary of the Invention

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a central drive speed reducer for a sprinkler truck.

[0004] The purpose of the utility model can be realized by the following technical solutions: A central drive speed reducer for a sprinkler truck includes a motor housing. A rotor, a stator and a rotating shaft are arranged inside the motor housing. The motor housing is directly fixedly connected to a speed reducer housing. One end of the rotating shaft extends into the speed reducer housing and meshes with a first-stage gear. The first-stage gear is fixed on a first-stage shaft. The first-stage shaft meshes with a second-stage gear. The second-stage gear is fixed on a second-stage shaft. The two ends of the second-stage shaft respectively extend out of the speed reducer housing. The axes of the rotating shaft, the first-stage shaft and the second-stage shaft are not on the same straight line. The first-stage shaft and the second-stage shaft are supported and installed in the speed reducer housing through bearings of different models. The speed reducer housing is composed of two split half-shells. The rotating shaft and the rotor are fixed. After the motor is powered on, the rotor drives the rotating shaft to rotate. One bearing supporting the rotating shaft is located inside the motor housing, and another supporting bearing is located inside the speed reducer housing. In order to reduce the overall volume, one end of the cylindrical motor housing is directly fixedly connected to the speed reducer housing. The rotating shaft, the first-stage shaft and the second-stage shaft are not on the same straight line, reducing the overall size, reducing the mass and facilitating installation. The position of the speed reducer housing relative to the motor housing is recessed inward to form a mounting portion. A stepped mounting seat is formed at the bottom of the mounting portion. A first bearing and a first seal are installed from the outside to the inside on the stepped mounting seat. One end of the rotating shaft passes through the first bearing and the first seal and meshes with the first-stage gear. One end of the motor housing protruding towards the speed reducer housing has a first positioning portion. The speed reducer housing is provided with a first positioning groove matching the first positioning portion. The motor housing and the speed reducer housing are fixed through a first fixing member. The inward recessed mounting portion can better reduce the size of the whole machine and reduce the weight of the whole machine. Through the fixation and positioning of the positioning portion and the stepped mounting seat, the rotating shaft and the first-stage gear are meshed better and more stably.

[0005] Further, the rotating shaft is formed with a gear matching the first-stage gear. The rotating shaft is a shaft with a gear itself.

[0006] Further, one end of the motor housing away from the reduction gearbox housing is fixedly connected with a motor end cover. A mounting hole and a mounting groove which are coaxial and communicated are formed in the middle of the motor end cover. A circular ring boss protrudes between the mounting hole and the mounting groove. A damping ring is embedded in the mounting groove. A second bearing is arranged in the damping ring. A thrust ring gasket is arranged between the second bearing and the circular ring boss. Since the end of the motor is suspended, the damping ring can reduce the vibration of the second bearing relative to the motor end cover, making the rotation of the rotating shaft more stable.

[0007] Further, a second positioning portion protrudes from one end of the motor housing towards the motor end cover. The motor end cover is provided with a second positioning groove matching the second positioning portion. The motor housing and the motor end cover are fixed by a second fixing member. The motor end cover is better fixed, so that the motor end cover and the stepped mounting seat in the reduction gearbox housing have a higher coaxiality, making the rotation of the rotating shaft more stable.

[0008] Further, a control box cover is fixedly connected to the outside of the motor end cover. A receiving cavity for mounting a controller is formed between the control box cover and the motor end cover.

[0009] Further, a cylindrical wall is formed on the motor end cover, and an arc wall is formed on the control box cover. The arc wall and the cylindrical wall are hermetically engaged to form the receiving cavity. This reduces the volume and weight of the whole machine.

[0010] Further, an annular step portion is provided at the end of the arc wall. The cylindrical wall is clamped outside the annular step portion. A bolt passes through the middle of the arc wall and is fixed to the motor end cover.

[0011] Further, a gear matching the second gear is formed on the first-stage wheel shaft.

[0012] Compared with the prior art, the technical effects of the present utility model are as follows: The control box cover, the motor end cover, the motor housing and the reduction gearbox housing are sequentially and fixedly installed with each other, reducing the size and weight of the whole machine; The rotating shaft and the first-stage wheel shaft are shafts with gears themselves, reducing the number of parts to reduce the weight; The damping ring can reduce the vibration of the second bearing relative to the motor end cover, making the rotation of the rotating shaft more stable. Description of the Drawings

[0013] Figure 1 is a sectional view of the present utility model.

[0014] Figure 2 is a front view of the present utility model.

[0015] Figure 3 is an enlarged view of part A of the present utility model.

[0016] Figure 4 is an enlarged view of part B of the present utility model.

[0017] Figure 5 It is a three-dimensional view of the gear of the present utility model.

[0018] Drawing number markings: 1. Motor housing; 101. First positioning part; 102. Second positioning part; 2. Rotor; 3. Stator; 4. Rotating shaft; 5. Reducer housing; 51. Mounting part; 52. Step mounting seat; 501. First positioning groove; 6. First-stage gear; 7. First-stage wheel shaft; 8. Second-stage gear; 9. Second-stage wheel shaft; 10. First bearing; 11. First seal; 12. Motor end cover; 121. Cylindrical wall; 1201. Mounting hole; 1202. Mounting groove; 1203. Ring boss; 1204. Second positioning groove; 13. Shock-absorbing ring; 14. Second bearing; 15. Thrust ring gasket; 16. Control box cover; 161. Arc wall; 1601. Accommodating cavity; 1611. Annular step part; 17. Bolt. Detailed implementation mode

[0019] The following are specific embodiments of the present utility model and in combination with the attached drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0020] According to Figures 1 to 5As shown in the figure, a central drive speed reducer for a sprinkler truck includes a motor housing 1. Inside the motor housing 1, a rotor 2, a stator 3 and a rotating shaft 4 are arranged. The rotating shaft 4 is fixed on the rotor 2, and the rotor 2 and the rotating shaft 4 rotate relative to the stator 3. The motor housing 1 is a cylindrical straight-through housing, and the motor housing 1 is directly fixedly connected to the speed reducer housing 5. One end of the rotating shaft 4 extends into the speed reducer housing 5 and meshes with a first-stage gear 6 for transmission. The first-stage gear 6 is fixed on a first-stage wheel shaft 7, the first-stage wheel shaft 7 meshes with a second-stage gear 8 for transmission, the second-stage gear 8 is fixed on a second-stage wheel shaft 9, and both ends of the second-stage wheel shaft 9 extend out of the speed reducer housing 5 respectively. The first-stage wheel shaft 7 and the second-stage wheel shaft 9 are supported and installed in the speed reducer housing 5 by bearings of different models. The speed reducer housing 5 is composed of two split half-shells. Ten bearing one 10 for supporting the rotating shaft 4 are located inside the motor housing 1, and there is also a supporting bearing located inside the speed reducer housing 5. In order to reduce the overall volume, one end of the cylindrical motor housing 1 is directly fixedly connected to the speed reducer housing 5. The rotating shaft 4, the first-stage wheel shaft 7 and the second-stage wheel shaft 9 are not on the same straight line, reducing the overall size, reducing the mass and facilitating installation. The speed reducer housing 5 is recessed inward relative to the motor housing 1 to form an installation part 51. A stepped mounting seat 52 is formed at the bottom of the installation part 51. The bearing one 10 and a seal one 11 are installed in the stepped mounting seat 52 from the outside to the inside. One end of the rotating shaft 4 passes through the bearing one 10 and the seal one 11 and meshes with the first-stage gear 6 for transmission. One end of the motor housing 1 protruding towards the speed reducer housing 5 has a positioning part one 101. The speed reducer housing 5 is provided with a positioning groove one 501 matching the positioning part one 101. The motor housing 1 and the speed reducer housing 5 are fixed by a fixing part one. The inward recessed installation part 51 can better reduce the size of the whole machine and reduce the weight of the whole machine. Through the fixation and positioning of the positioning part and the stepped mounting seat 52, the rotating shaft 4 and the first-stage gear 6 are engaged better and more stably.

[0021] The rotating shaft 4 is formed with a gear that cooperates with the first-stage gear 6.

[0022] A motor end cover 12 is fixedly connected to one end of the motor housing 1 away from the speed reducer housing 5. A coaxially connected mounting hole 1201 and a mounting groove 1202 are formed in the middle of the motor end cover 12. A circular ring boss 1203 protrudes between the mounting hole 1201 and the mounting groove 1202. A shock-absorbing ring 13 is embedded in the mounting groove 1202. A bearing two 14 is arranged in the shock-absorbing ring 13. A thrust ring gasket 15 is arranged between the bearing two 14 and the circular ring boss 1203. Since the end of the motor is suspended, the shock-absorbing ring 13 can reduce the vibration of the bearing two 14 relative to the motor end cover 12, making the rotation of the rotating shaft 4 more stable. One end of the motor housing 1 protruding towards the motor end cover 12 has a positioning part two 102. The motor end cover 12 is provided with a positioning groove two 1204 matching the positioning part two 102. The motor housing 1 and the motor end cover 12 are fixed by a fixing part two. The motor end cover 12 is fixed better, so that the motor end cover 12 and the stepped mounting seat 52 in the speed reducer housing 5 have a higher coaxiality, making the rotation of the rotating shaft 4 more stable.

[0023] The control box cover 16 is fixedly connected to the outside of the motor end cover 12, and a receiving cavity 1601 for installing a controller is formed between the control box cover 16 and the motor end cover 12. The motor end cover 12 is formed with a cylindrical wall 121, and the control box cover 16 is formed with an arc wall 161. The arc wall 161 and the cylindrical wall 121 are hermetically engaged to form the receiving cavity 1601. This reduces the volume and weight of the whole machine. The end of the arc wall 161 has an annular step portion 1611, and the cylindrical wall 121 is clamped outside the annular step portion 1611. A bolt 17 passes through the middle of the arc wall 161 and is fixed to the motor end cover 12.

[0024] The first-stage wheel shaft 7 is formed with a gear that mates with the second-stage gear 8.

[0025] The control box cover 16, the motor end cover 12, the motor housing 1 and the reduction gearbox housing 5 are fixedly installed with each other in sequence, reducing the size and weight of the whole machine; the rotating shaft 4 and the first-stage wheel shaft 7 are shafts with gears themselves, reducing the number of components to reduce the weight; the shock-absorbing ring 13 can reduce the vibration of the second bearing 14 relative to the motor end cover 12, making the rotation of the rotating shaft 4 more stable.

[0026] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope defined by the claims of the present invention.

Claims

1. A central drive speed reducer for a sprinkler vehicle, comprising a motor housing (1), a rotor (2), a stator (3) and a rotating shaft (4) are arranged inside the motor housing (1), and it is characterized in that: The motor housing (1) is directly fixedly connected to the reduction gearbox housing (5). One end of the rotating shaft (4) extends into the reduction gearbox housing (5) and meshes with the first-stage gear (6) for transmission. The first-stage gear (6) is fixed on the first-stage wheel shaft (7). The first-stage wheel shaft (7) meshes with the second-stage gear (8) for transmission. The second-stage gear (8) is fixed on the second-stage wheel shaft (9). The two ends of the second-stage wheel shaft (9) respectively extend out of the reduction gearbox housing (5). The axes of the rotating shaft (4), the first-stage wheel shaft (7), and the second-stage wheel shaft (9) are not on the same straight line. The position of the reduction gearbox housing (5) relative to the motor housing (1) is recessed inward to form a mounting portion (51). A stepped mounting seat (52) is formed at the bottom of the mounting portion (51). A first bearing (10) and a first seal (11) are installed from the outside to the inside of the stepped mounting seat (52). One end of the rotating shaft (4) passes through the first bearing (10) and the first seal (11) and meshes with the first-stage gear (6) for transmission. One end of the motor housing (1) protruding towards the reduction gearbox housing (5) has a first positioning portion (101). The reduction gearbox housing (5) is provided with a first positioning groove (501) matching the first positioning portion (101). The motor housing (1) and the reduction gearbox housing (5) are fixed by a first fixing member.

2. The central drive speed reducer for a sprinkler truck according to claim 1, wherein: The rotating shaft (4) is formed with a gear that cooperates with the first-stage gear (6).

3. The central drive speed reducer for a sprinkler truck according to claim 2, characterized in that: One end of the motor housing (1) away from the reduction gearbox housing (5) is fixedly connected to a motor end cover (12). A coaxially connected mounting hole (1201) and a mounting groove (1202) are formed in the middle of the motor end cover (12). A circular ring boss (1203) protrudes between the mounting hole (1201) and the mounting groove (1202). A shock-absorbing ring (13) is embedded in the mounting groove (1202). A second bearing (14) is arranged in the shock-absorbing ring (13). A thrust ring gasket (15) is arranged between the second bearing (14) and the circular ring boss (1203).

4. The central drive speed reducer for a sprinkler truck according to claim 3, characterized in that: One end of the motor housing (1) protruding towards the motor end cover (12) has a second positioning portion (102). The motor end cover (12) is provided with a second positioning groove (1204) matching the second positioning portion (102). The motor housing (1) and the motor end cover (12) are fixed by a second fixing member.

5. The central drive speed reducer for a sprinkler truck according to claim 3, characterized in that: A control box cover (16) is fixedly connected to the outside of the motor end cover (12). A receiving cavity (1601) for installing a controller is formed between the control box cover (16) and the motor end cover (12).

6. The central drive speed reducer for a sprinkler truck according to claim 5, characterized in that: The motor end cover (12) is formed with a cylindrical wall (121). The control box cover (16) is formed with an arc wall (161). The arc wall (161) is hermetically clamped with the cylindrical wall (121) to form the receiving cavity (1601).

7. A central drive speed reducer for a sprinkler truck according to claim 6, characterized in that: The end of the arc wall (161) has an annular stepped portion (1611). The cylindrical wall (121) is clamped outside the annular stepped portion (1611). A bolt (17) passes through the middle of the arc wall (161) and is fixed to the motor end cover (12).

8. The central drive speed reducer for a sprinkler truck according to claim 1, characterized in that: The first-stage wheel shaft (7) is formed with a gear that cooperates with the second-stage gear (8).

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