Forward and reverse rotation structure based on differential mechanism

Abstract

The utility model discloses a forward and reverse rotation structure based on a differential mechanism, which belongs to the technical field of forward and reverse rotation structures and comprises a shell, a first-stage transmission structure is arranged in the shell, a second-stage transmission structure is arranged on one side of the first-stage transmission structure, and a third-stage transmission structure is arranged on one side of the second-stage transmission structure. The first-stage transmission structure and the second-stage transmission structure are in meshing transmission through a gear, the second-stage transmission structure and the third-stage transmission structure are in meshing transmission through a gear, and a first moving gear is arranged on the first-stage transmission structure. The forward and reverse rotation structure based on the differential mechanism is simple in structure, high in transmission precision, high in transmission efficiency, long in service life and capable of achieving simultaneous forward and reverse rotation of the fifth transmission shaft and the sixth transmission shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of forward and reverse rotation structures, in particular to a forward and reverse rotation structure based on a differential. Background Art

[0002] In the prior art, a transmission box with two sets of gear sets is provided, one set for forward transmission (two shafts rotate in the same direction) and the other set for reverse transmission (two shafts rotate in opposite directions), so that the two shafts can rotate synchronously in the same direction or in opposite directions. Through an internal clutch or shifting mechanism, different gear sets can be selectively engaged to change the rotation direction of the two shafts. Such a design is common in some complex mechanical systems, such as specific industrial robot joints or transmission systems of high-end vehicles. It has a complex structure, is difficult to operate, and has low transmission efficiency. Summary of the invention

[0003] The utility model aims to provide a forward and reverse rotation structure based on a differential, which has simple structure, high transmission accuracy, high transmission efficiency and long service life, and can realize simultaneous forward and reverse rotation of the fifth transmission shaft and the sixth transmission shaft.

[0004] To achieve the above-mentioned purpose, the utility model provides a forward and reverse rotation structure based on a differential, including a shell, a primary transmission structure is arranged in the shell, a secondary transmission structure is arranged on one side of the primary transmission structure, a tertiary transmission structure is arranged on one side of the secondary transmission structure, the primary transmission structure and the secondary transmission structure and the secondary transmission structure and the tertiary transmission structure are transmitted through gear meshing, and a first moving gear is arranged on the primary transmission structure.

[0005] Preferably, a second moving gear is provided on one side of the first moving gear, the first moving gear and the second moving gear are connected by a sleeve, a No. 2 gear is provided on one side of the second moving gear, a first transmission shaft is provided at the center of the No. 2 gear, the No. 2 gear is connected to the first transmission shaft by a key, a No. 13 gear is provided on one side of the No. 2 gear, a No. 1 gear is provided on one side of the No. 13 gear, the No. 13 gear and the No. 1 gear are connected by the sleeve, and an internal gear matching with the second moving gear and the No. 13 gear is provided on the inner side of the No. 2 gear.

[0006] Preferably, the secondary transmission structure includes a second transmission shaft, on which a third gear is provided, a third transmission shaft is provided on one side of the second transmission shaft, on which a fifth gear is provided, a fourth transmission shaft is provided on one side of the third transmission shaft, and on which a seventh gear is provided.

[0007] Preferably, the second transmission shaft and the third transmission shaft, and the third transmission shaft and the fourth transmission shaft are connected via a differential, a fourth gear is provided on the outer side of the differential between the second transmission shaft and the third transmission shaft, and a sixth gear is provided on the outer side of the differential between the third transmission shaft and the fourth transmission shaft.

[0008] Preferably, the three-stage transmission structure includes a fifth transmission shaft, the fifth transmission shaft is provided with an eighth gear, a ninth gear is provided on one side of the eighth gear, a sixth transmission shaft is provided on one side of the fifth transmission shaft, a eleventh gear is provided on the sixth transmission shaft, a twelve gear is provided on one side of the eleventh gear, the fifth transmission shaft and the sixth transmission shaft are connected through the differential, and a tenth gear is provided on the outside of the differential between the fifth transmission shaft and the sixth transmission shaft.

[0009] Preferably, the primary transmission structure and the secondary transmission structure, as well as the secondary transmission structure and the tertiary transmission structure are all symmetrically transmitted.

[0010] Therefore, the utility model adopts the above-mentioned forward and reverse rotation structure based on the differential, which has a simple structure, high transmission accuracy, high transmission efficiency, and long service life, and can realize simultaneous forward and reverse rotation of the fifth transmission shaft and the sixth transmission shaft.

[0011] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a structure of the utility model that rotates in the same direction based on a forward and reverse structural embodiment of a differential.

[0013] Reference numerals

[0014] 1. Housing; 2. First transmission shaft; 3. Gear No. 1; 4. Gear No. 2; 5. First moving gear; 6. Second transmission shaft; 7. Third transmission shaft; 8. Fourth transmission shaft; 9. Gear No. 3; 10. Gear No. 4; 11. Gear No. 5; 12. Gear No. 6; 13. Gear No. 7; 14. Fifth transmission shaft; 15. Sixth transmission shaft; 16. Gear No. 8; 17. Gear No. 9; 18. Gear No. 10; 19. Differential; 20. Gear No. 11; 21. Gear No. 12; 22. Gear No. 13; 23. Second moving gear. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] Embodiment 1

[0018] like Figure 1 As shown, the utility model provides a forward and reverse rotation structure based on a differential, including a housing 1, a primary transmission structure is arranged inside the housing 1, a secondary transmission structure is arranged on one side of the primary transmission structure, and a tertiary transmission structure is arranged on one side of the secondary transmission structure, and the housing 1 provides support for the primary transmission structure, the secondary transmission structure, and the tertiary transmission structure. The primary transmission structure and the secondary transmission structure, as well as the secondary transmission structure and the tertiary transmission structure, are transmitted through gear meshing, and the primary transmission structure and the secondary transmission structure, as well as the secondary transmission structure and the tertiary transmission structure are all symmetrical transmissions.

[0019] The primary transmission structure is provided with a first moving gear 5, and a second moving gear 23 is provided on one side of the first moving gear 5. The first moving gear 5 and the second moving gear 23 are connected by a sleeve, and the second moving gear 23 will move synchronously when the first moving gear 5 is moved. A second gear 4 is provided on one side of the second moving gear 23, and a first transmission shaft 2 is provided at the center of the second gear 4. The second gear 4 is connected to the first transmission shaft 2 by a key, and the rotation of the first transmission shaft 2 can drive the second gear 4 to rotate. A thirteenth gear 22 is provided on one side of the second gear 4, and a first gear 3 is provided on one side of the thirteenth gear 22. An internal gear that cooperates with the second moving gear 23 and the thirteenth gear 22 is provided on the inner side of the second gear 4, and the rotation of the second gear 4 can drive the second moving gear 23 and the thirteenth gear 22 to rotate.

[0020] The secondary transmission structure includes a second transmission shaft 6, on which a third gear 9 is provided. The rotation of the third gear 9 can drive the second transmission shaft 6 to rotate. A third transmission shaft 7 is provided on one side of the second transmission shaft 6. A fifth gear 11 is provided on the third transmission shaft 7. The rotation of the fifth gear 11 can drive the third transmission shaft 7 to rotate. A fourth transmission shaft 8 is provided on one side of the third transmission shaft 7. A seventh gear 13 is provided on the fourth transmission shaft 8. The rotation of the seventh gear 13 can drive the fourth transmission shaft 8 to rotate.

[0021] The second transmission shaft 6 and the third transmission shaft 7, as well as the third transmission shaft 7 and the fourth transmission shaft 8 are connected via a differential 19, which enables differential rotation or even reverse rotation between the second transmission shaft 6, the third transmission shaft 7 and the fourth transmission shaft 8. A fourth gear 10 is disposed on the outside of the differential 19 between the second transmission shaft 6 and the third transmission shaft 7, and a sixth gear 12 is disposed on the outside of the differential 19 between the third transmission shaft 7 and the fourth transmission shaft 8. The fourth gear 10 and the sixth gear 12 can respectively drive the internal differential 19 to rotate.

[0022] The three-stage transmission structure includes a fifth transmission shaft 14, on which an eighth gear 16 is arranged, and a ninth gear 17 is arranged on one side of the eighth gear 16. The rotation of the eighth gear 16 and the ninth gear 17 can drive the fifth transmission shaft 14 to rotate. A sixth transmission shaft 15 is arranged on one side of the fifth transmission shaft 14, on which an eleventh gear 20 is arranged, and a twelfth gear 21 is arranged on one side of the eleventh gear 20. The rotation of the eleventh gear 20 and the twelfth gear 21 can drive the sixth transmission shaft 15 to rotate. The fifth transmission shaft 14 and the sixth transmission shaft 15 are connected by a differential 19, and the differential 19 enables the fifth transmission shaft 14 and the sixth transmission shaft 15 to achieve differential rotation or even reverse rotation. A tenth gear 18 is arranged on the outside of the differential 19 between the fifth transmission shaft 14 and the sixth transmission shaft 15, and the tenth gear 18 can drive the differential 19 inside it to rotate.

[0023] When a forward and reverse reverse structure based on a differential provided by the utility model is used, when the second moving gear 23 is meshed with the internal teeth of the second gear 4, the first transmission shaft 2 is rotated, the first transmission shaft 2 will drive the second gear 4 to rotate, the second gear 4 will drive the first moving gear 5, the second moving gear 23, the thirteenth gear 22 and the first gear 3 to rotate, and the secondary transmission structure is driven to rotate through the gear meshing, and the secondary transmission structure drives the tertiary transmission structure to rotate so that the fifth transmission shaft 14 and the sixth transmission shaft 15 rotate in the same direction.

[0024] Move the first moving gear 5 and the second moving gear 23 so that the second moving gear 23 does not mesh with the inner teeth of the second gear 4, rotate the first transmission shaft 2, the first transmission shaft 2 will drive the second gear 4 to rotate, and the second gear 4 drives the thirteenth gear 22 and the first gear 3 to rotate. At this time, the second gear 4, the thirteenth gear 22 and the first gear 3 respectively drive the fifth gear 11, the fourth gear 10 and the third gear 9 to rotate through meshing. The fifth gear 11, the fourth gear 10 and the third gear 9 rotate and respectively drive the tenth gear 18, the ninth gear 17 and the eighth gear 16 to rotate through meshing, so that the fifth transmission shaft 14 rotates in one direction. Since the differential 19 is provided inside the tenth gear 18, when the tenth gear 18 rotates, the eleventh gear 20 will rotate in the opposite direction. The tenth gear 18 rotates the sixth gear 12 through gear meshing. The rotation of the sixth gear 12 drives the internal differential 19 to operate so that the seventh gear 13, the first moving gear 5 and the second moving gear 23 rotate in the opposite direction to the fifth gear 11. The rotation of the seventh gear 13 drives the twelveth gear 21 to rotate through meshing. The rotation of the twelveth gear 21 drives the sixth transmission shaft 15 to rotate in the direction opposite to the rotation direction of the fifth transmission shaft 14.

[0025] Therefore, the utility model adopts the above-mentioned forward and reverse rotation structure based on the differential, which has a simple structure, high transmission accuracy, high transmission efficiency, and long service life, and can realize simultaneous forward and reverse rotation of the fifth transmission shaft and the sixth transmission shaft.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A forward and reverse rotation structure based on a differential, characterized in that: It includes a shell, in which a primary transmission structure is arranged inside the shell, a secondary transmission structure is arranged on one side of the primary transmission structure, a tertiary transmission structure is arranged on one side of the secondary transmission structure, the primary transmission structure and the secondary transmission structure as well as the secondary transmission structure and the tertiary transmission structure are transmitted through gear meshing, and a first moving gear is arranged on the primary transmission structure.

2. A forward and reverse rotation structure based on a differential according to claim 1, characterized in that: A second moving gear is provided on one side of the first moving gear, the first moving gear and the second moving gear are connected by a sleeve, a No. 2 gear is provided on one side of the second moving gear, a first transmission shaft is provided at the center of the No. 2 gear, the No. 2 gear is connected to the first transmission shaft by a key, a No. 13 gear is provided on one side of the No. 2 gear, a No. 11 gear is provided on one side of the No. 13 gear, the No. 13 gear and the No. 1 gear are connected by the sleeve, and an internal gear matching with the second moving gear and the No. 13 gear is provided on the inner side of the No. 2 gear.

3. The forward and reverse rotation structure based on a differential according to claim 1, characterized in that: The secondary transmission structure includes a second transmission shaft, on which a third gear is disposed, a third transmission shaft is disposed on one side of the second transmission shaft, on which a fifth gear is disposed, a fourth transmission shaft is disposed on one side of the third transmission shaft, and on which a seventh gear is disposed.

4. The forward and reverse rotation structure based on a differential according to claim 3, characterized in that: The second transmission shaft and the third transmission shaft, as well as the third transmission shaft and the fourth transmission shaft are connected via a differential, a fourth gear is provided on the outer side of the differential between the second transmission shaft and the third transmission shaft, and a sixth gear is provided on the outer side of the differential between the third transmission shaft and the fourth transmission shaft.

5. The forward and reverse rotation structure based on a differential according to claim 4, characterized in that: The three-stage transmission structure includes a fifth transmission shaft, an eighth gear is provided on the fifth transmission shaft, a ninth gear is provided on one side of the eighth gear, a sixth transmission shaft is provided on one side of the fifth transmission shaft, an eleventh gear is provided on the sixth transmission shaft, a twelve gear is provided on one side of the eleventh gear, the fifth transmission shaft and the sixth transmission shaft are connected via the differential, and a tenth gear is provided on the outer side of the differential between the fifth transmission shaft and the sixth transmission shaft.

6. The forward and reverse rotation structure based on a differential according to claim 1, characterized in that: The primary transmission structure and the secondary transmission structure, as well as the secondary transmission structure and the tertiary transmission structure are all symmetrically transmitted.

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