High-density shunting gearbox

Abstract

The utility model relates to the technical field of power transmission, in particular to a high-density shunting gearbox which comprises a box body, an input shaft, a first intermediate shaft and a right output shaft are rotatably arranged in the box body, and a second intermediate shaft is arranged between the first intermediate shaft and the right output shaft. Two third intermediate shafts and two confluence gear shafts are rotationally arranged on one side of the box body, a left output gear shaft is arranged between the two confluence gear shafts, a first flat key is arranged on the first intermediate shaft, gears are arranged on the first flat key, the input shaft and the second intermediate shaft, shunting gears are arranged on the third intermediate shafts, and the left output gear shaft is arranged between the two confluence gear shafts. The strength and the safety coefficient of the gear are improved, the structure of the whole gear box is more compact, and larger torque can be transmitted.

Description

Technical Field

[0001] This utility model relates to the field of power transmission technology, and more specifically, to a high-density split gearbox. Background Technology

[0002] A gearbox is a mechanical transmission device mainly used to transmit power and regulate rotational speed. Its core functions include: speed and torque change, changing transmission direction, clutch and power distribution, etc. It is widely used in automobiles, airplanes, ships, heavy machinery and industrial machinery equipment, and is an important component to ensure the accurate operation and efficient work of mechanical equipment.

[0003] For example, Chinese patent disclosure: A gearbox, application number: CN201420381275.X, mainly includes a housing, an input shaft installed inside the housing with an input coupling at its end, a clutch housing with an integrated gear fixed on the input shaft, and a drive gear loosely fitted on the input shaft. One end of the drive gear is connected to a clutch seat, which, together with the clutch housing, internally mounted piston, inner friction plate, and outer friction plate, constitutes a hydraulic friction clutch. The drive gear meshes with an intermediate transmission gear, and through the intermediate transmission gear, meshes with a driven gear fixed on the output shaft. The integrated gear is constantly meshed with a left transmission gear fixed on the left transmission shaft and a right transmission gear fixed on the right transmission shaft. The left and right transmission shafts are arranged adjacent to the input shaft inside the housing, and they are connected to two high-power oil pumps through oil pump couplings. The intermediate transmission gear is loosely fitted on either the left or right transmission shaft. It has the characteristics of simple structure, compact size, light weight, convenient and flexible operation, and safety and reliability.

[0004] However, in the above technical solutions, the extruder is an indispensable key equipment in the chemical and rubber and plastics industries, and its application range is extremely wide, covering almost all aspects from raw material processing to finished product manufacturing. As the core component of the extruder transmission system, the gearbox's performance directly affects the overall operation of the extruder. During operation, the two output shafts of the gearbox not only bear the heavy responsibility of transmitting torque to ensure that the extruder screw can rotate stably and generate sufficient extrusion pressure, but also bear a large axial force. Utility Model Content

[0005] The main objective of this invention is to provide a high-density split-flow gearbox, which can effectively solve the problem that in the background art, extruders are indispensable key equipment in the chemical and rubber and plastics industries, with extremely wide applications, covering almost all aspects from raw material processing to finished product manufacturing. As the core component of the extruder transmission system, the performance of the gearbox directly affects the overall operation of the extruder. During operation, the two output shafts of the gearbox not only bear the heavy responsibility of transmitting torque to ensure that the extruder screw can rotate stably and generate sufficient extrusion pressure, but also bear the problem of large axial force.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-density split-flow gearbox includes a housing. An input shaft, a first intermediate shaft, and a right output shaft are rotatably disposed within the housing. A second intermediate shaft is disposed between the first intermediate shaft and the right output shaft. Two third intermediate shafts and two converging gear shafts are rotatably disposed on one side of the housing. A left output gear shaft is disposed between the two converging gear shafts. A first flat key is disposed on the first intermediate shaft. Gears are disposed on the first flat key, the input shaft, and the second intermediate shaft. A split-flow gear is disposed on the third intermediate shaft.

[0008] Preferably, the input shaft is provided with a second flat key and a first self-aligning roller bearing, a first oil seal and a first thrust bearing are provided between the second flat key and the first self-aligning roller bearing, and a first end cap is provided between the first oil seal and the first thrust bearing.

[0009] Preferably, the first intermediate shaft is provided with a second self-aligning roller bearing and a thrust self-aligning roller bearing, a bearing sleeve is provided between the second self-aligning roller bearing and the thrust self-aligning roller bearing, a second end cap is provided on the side of the thrust self-aligning roller bearing away from the bearing sleeve, the second intermediate shaft is provided with a double-row cylindrical roller bearing, the right output shaft is provided with a second thrust bearing, and the gear is connected to the first intermediate shaft through a first flat key.

[0010] Preferably, a first bearing is provided on the third intermediate shaft, and a second bearing is provided on the confluence gear shaft.

[0011] Preferably, the left output gear shaft is provided with a series thrust bearing and a second oil seal, the second oil seal is provided with an oil seal cover, a needle roller bearing and a bearing housing are provided between the series thrust bearing and the second oil seal, and a third thrust bearing is provided between the needle roller bearing and the bearing housing.

[0012] Preferably, the gear on the input shaft meshes with the gear on the first intermediate shaft, the internal spline of the first intermediate shaft is connected to the external spline of the second intermediate shaft, the internal spline at the other end of the second intermediate shaft is connected to the external spline of the right output shaft, the gear on the second intermediate shaft meshes with two shunt gears simultaneously, the internal splines of the two third intermediate shafts are respectively connected to two merging gear shafts, and the two merging gear shafts mesh with the left output gear shaft simultaneously.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) When this utility model is used, the main prime mover is connected to the input shaft through a coupling or directly to transmit the prime mover power to the input shaft, thereby achieving a first-stage reduction and increasing the torque. One end of the right output shaft outputs half of the input power through an external spline, and transmits half of the input power to two split gears. The power transmitted by each split gear is one-quarter of the input power, and each confluence gear shaft transmits one-quarter of the input power. The two confluence gear shafts mesh with the left output gear shaft at the same time, transmitting the power to the left output gear shaft. The left output gear shaft outputs half of the input power through an external spline. The use of series thrust bearings can still meet the large axial thrust even when the center distance between the left and right output shafts is small. Through the transmission method of splitting and recombining, the strength and safety factor of the gears are improved, making the structure of the entire gearbox more compact and able to transmit greater torque. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a high-density split gearbox according to the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of a high-density split gearbox according to the present invention;

[0017] Figure 3 This is a top view of the internal structure of a high-density split gearbox according to the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of a high-density split gearbox of this utility model without the housing.

[0019] In the diagram: 1. Second flat key; 2. Input shaft; 3. First oil seal; 4. First end cover; 5. First thrust bearing; 6. First self-aligning roller bearing; 7. Second end cover; 8. Thrust self-aligning roller bearing; 9. Bearing sleeve; 10. Second self-aligning roller bearing; 11. Gear; 12. First intermediate shaft; 13. First flat key; 14. Housing; 15. Second intermediate shaft; 16. Double row cylindrical roller bearing; 17. Flow splitting gear; 18. First bearing; 19. Flow converging gear shaft; 20. Second bearing; 21. Second thrust bearing; 22. Right output shaft; 23. Tandem thrust bearing; 24. Needle roller bearing; 25. Left output gear shaft; 26. Third thrust bearing; 27. Bearing housing; 28. Oil seal cover; 29. ​​Third intermediate shaft; 30. Second oil seal. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 4 As shown, a high-density split gearbox includes a housing 14. An input shaft 2, a first intermediate shaft 12, and a right output shaft 22 are rotatably disposed inside the housing 14. A second intermediate shaft 15 is disposed between the first intermediate shaft 12 and the right output shaft 22. Two third intermediate shafts 29 and two confluence gear shafts 19 are rotatably disposed on one side of the housing 14. A left output gear shaft 25 is disposed between the two confluence gear shafts 19. A first flat key 13 is disposed on the first intermediate shaft 12. Gears 11 are disposed on the first flat key 13, the input shaft 2, and the second intermediate shaft 15. A split gear 17 is disposed on the third intermediate shafts 29.

[0022] The input shaft 2 is provided with a second flat key 1 and a first self-aligning roller bearing 6. A first oil seal 3 and a first thrust bearing 5 are provided between the second flat key 1 and the first self-aligning roller bearing 6. A first end cover 4 is provided between the first oil seal 3 and the first thrust bearing 5.

[0023] The first intermediate shaft 12 is provided with a second self-aligning roller bearing 10 and a thrust self-aligning roller bearing 8. A bearing sleeve 9 is provided between the second self-aligning roller bearing 10 and the thrust self-aligning roller bearing 8. A second end cap 7 is provided on the side of the thrust self-aligning roller bearing 8 away from the bearing sleeve 9. The second intermediate shaft 15 is provided with a double-row cylindrical roller bearing 16. The right output shaft 22 is provided with a second thrust bearing 21. The gear 11 is connected to the first intermediate shaft 12 through a first flat key 13.

[0024] A first bearing 18 is provided on the third intermediate shaft 29, and a second bearing 20 is provided on the confluence gear shaft 19;

[0025] The left output gear shaft 25 is provided with a series thrust bearing 23 and a second oil seal 30. The second oil seal 30 is provided with an oil seal cover 28. A needle roller bearing 24 and a bearing housing 27 are provided between the series thrust bearing 23 and the second oil seal 30. A third thrust bearing 26 is provided between the needle roller bearing 24 and the bearing housing 27.

[0026] The working principle of this high-density split-flow gearbox:

[0027] In operation, the main prime mover is connected to the input shaft 2 via a coupling or directly, transmitting the prime mover power to the input shaft 2. Gear 11 on the input shaft 2 meshes with gear 11 on the first intermediate shaft 12, achieving a first-stage speed reduction and increasing torque. Half of the input power is output via an external spline at one end of the right output shaft 22. Since gear 11 on the second intermediate shaft 15 meshes simultaneously with two shunt gears 17, half of the input power is transmitted to the two shunt gears 17. Each shunt gear 17 transmits one-quarter of the input power. The two shunt gears 17 are connected to the two third intermediate shafts 29 via interference fits. The internal splines of the two third intermediate shafts 29 are respectively connected to the two confluence gear shafts 19. Each confluence gear shaft 19 transmits one-quarter of the input power. The two confluence gear shafts 19 simultaneously mesh with the left output gear shaft 25, transmitting the power to the left output gear shaft 25. The left output gear shaft 25 outputs half of the input power through the external spline. The use of series thrust bearings 23 can still meet the large axial thrust even when the center distance between the left and right output shafts is small. The transmission method of splitting and recombining improves the strength and safety factor of the gears, makes the structure of the entire gearbox more compact, and can transmit greater torque.

[0028] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A high density split gear box comprising a housing (14) characterised in that: The box (14) is rotatably provided with an input shaft (2), a first intermediate shaft (12) and a right output shaft (22), the first intermediate shaft (12) and the right output shaft (22) are provided with a second intermediate shaft (15) therebetween, two third intermediate shafts (29) and two confluence gear shafts (19) are rotatably provided on one side of the box (14), a left output gear shaft (25) is provided between the two confluence gear shafts (19), a first flat key (13) is provided on the first intermediate shaft (12), gears (11) are provided on the first flat key (13), the input shaft (2) and the second intermediate shaft (15), and split gears (17) are provided on the third intermediate shaft (29).

2. A high density split gear case according to claim 1, characterized in that: A second flat key (1) and a first core roller bearing (6) are provided on the input shaft (2), a first oil seal (3) and a first thrust bearing (5) are provided between the second flat key (1) and the first core roller bearing (6), and a first end cover (4) is provided between the first oil seal (3) and the first thrust bearing (5).

3. A high density split gear case according to claim 2, wherein: A second core roller bearing (10) and a thrust core roller bearing (8) are provided on the first intermediate shaft (12), a bearing sleeve (9) is provided between the second core roller bearing (10) and the thrust core roller bearing (8), a second end cover (7) is provided on the side of the thrust core roller bearing (8) away from the bearing sleeve (9), the second intermediate shaft (15) is provided with double-row cylindrical roller bearings (16), the right output shaft (22) is provided with a second thrust bearing (21), and the gears (11) are connected with the first intermediate shaft (12) through the first flat key (13).

4. A high density split gear case according to claim 3, wherein: A first bearing (18) is provided on the third intermediate shaft (29), and a second bearing (20) is provided on the confluence gear shaft (19).

5. A high density split gear case according to claim 4, wherein: A series thrust bearing (23) and a second oil seal (30) are provided on the left output gear shaft (25), an oil seal cover (28) is provided on the second oil seal (30), a needle bearing (24) and a bearing seat (27) are provided between the series thrust bearing (23) and the second oil seal (30), and a third thrust bearing (26) is provided between the needle bearing (24) and the bearing seat (27).

6. A high density split gear case according to claim 5, wherein: The gears (11) on the input shaft (2) are engaged with the gears (11) on the first intermediate shaft (12), the internal spline of the first intermediate shaft (12) is connected with the external spline of the second intermediate shaft (15), the internal spline of the other end of the second intermediate shaft (15) is connected with the external spline of the right output shaft (22), the gears (11) on the second intermediate shaft (15) are engaged with two split gears (17) at the same time, the internal splines of the two third intermediate shafts (29) are connected with the two confluence gear shafts (19) respectively, and the two confluence gear shafts (19) are engaged with the left output gear shaft (25) at the same time.

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