Differential planetary reducer

Abstract

The differential planetary reducer comprises a box body, two transmission shafts, a first speed reduction transmission assembly and a second speed reduction transmission assembly, a first input shaft, a second input shaft and two output shafts which are parallel to each other are rotatably installed on the box body, and the two transmission shafts are rotatably arranged in the box body. The two transmission shafts are in transmission connection with the two output shafts through a planetary speed reduction assembly, each planetary speed reduction assembly comprises an inner gear, a planetary gear and a sun gear, and the inner gears coaxially and rotationally sleeve the transmission shafts. According to the utility model, the maintenance of equipment is facilitated, the maintenance cost is reduced, the occupied area of the equipment is greatly reduced, and the space utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship unloaders, in particular to a differential planetary reducer. Background Art

[0002] In modern port operations, ship unloaders are core equipment, and their performance and efficiency directly affect the overall operating capacity and economic benefits of the port.

[0003] Traditional ship unloader transmission systems mostly adopt a separate design, that is, the lifting, opening and closing, and trolley operation functions are realized by independent transmission mechanisms respectively. This not only leads to a complex overall structure and a high space occupancy, but also increases equipment costs and maintenance difficulty. Summary of the invention

[0004] In view of the above problems of the existing ship unloader transmission system, the present invention aims to provide a differential planetary reducer with compact structure, low space occupation and low maintenance cost.

[0005] The specific technical solutions are as follows:

[0006] A differential planetary reducer, comprising:

[0007] A box body, on which a first input shaft, a second input shaft and two output shafts parallel to each other are rotatably mounted;

[0008] Two transmission shafts, the two transmission shafts are rotatably arranged in the housing, and the two transmission shafts are respectively connected to the two output shafts through a set of planetary reduction assemblies, each of the planetary reduction assemblies comprises: an internal gear, a planetary gear and a sun gear, the internal gear is coaxially rotatably sleeved on the outside of the transmission shaft, the planetary gear is rotatably connected to the output shaft and is located between the sun gear and the internal gear, the sun gear is coaxially connected to the transmission shaft, and the planetary gear is respectively meshed with the sun gear and the internal gear, wherein the outer circumferential surfaces of the two internal gears are provided with external teeth, and the two external teeth are meshed;

[0009] a first reduction transmission assembly, the first reduction transmission assembly being disposed between the first input shaft and one of the internal gears;

[0010] The second reduction transmission component is arranged between the second input shaft and the two transmission shafts.

[0011] As a further improvement and optimization of this solution, one of the output shafts, the second input shaft, another of the output shafts, and the first input shaft are sequentially arranged in the transverse direction.

[0012] As a further improvement and optimization of this solution, the two output shafts are arranged on one side of the box body, and the second input shaft is arranged on the other side of the box body.

[0013] As a further improvement and optimization of this solution, both ends of the first input shaft extend to the outside of the box.

[0014] As a further improvement and optimization of this solution, the first reduction transmission assembly includes:

[0015] An intermediate shaft, the intermediate shaft being rotatably disposed in the housing;

[0016] A first gear, wherein the first gear is sleeved on the outside of the first input shaft;

[0017] A second gear, which is sleeved on the outside of the intermediate shaft and meshes with the first gear;

[0018] The third gear is sleeved on the outside of the intermediate shaft and meshes with the external teeth on one of the internal gears, and the transmission ratios between the first gear and the second gear and between the third gear and the external teeth are both greater than one.

[0019] As a further improvement and optimization of the present solution, the first gear and the first input shaft, as well as the third gear and the intermediate shaft are integrated structures.

[0020] As a further improvement and optimization of this solution, the second reduction transmission assembly includes:

[0021] a fourth gear connected to an exterior of the second input shaft;

[0022] Two fifth gears are respectively sleeved on the outside of the two transmission shafts, and the two fifth gears are respectively meshed with the fourth gear, and the transmission ratio between the fourth gear and the fifth gear is greater than one.

[0023] Compared with the prior art, the above technical solution has the following positive effects:

[0024] (1) The utility model integrates the functions of lifting, opening and closing, and trolley operation into a compact transmission mechanism. Under the premise of ensuring that all functions are not affected, it is not only convenient for equipment maintenance and reduces maintenance costs, but also greatly reduces the floor space occupied by the equipment and improves space utilization.

[0025] (2) The utility model has two sets of output shafts. Different speed ratios can be achieved through the power input of the first input shaft and the second input shaft to meet the needs of different application scenarios.

[0026] (3) The utility model ingeniously combines the excellent performance of the planetary reduction assembly and the gear transmission structure to achieve accurate and efficient power transmission. Its unique transmission ratio design, combined with a compact structural layout, not only improves the transmission efficiency, but also ensures the stability and reliability of the power transmission process, laying a solid foundation for the efficient operation of the ship unloader. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a differential planetary reducer of the utility model;

[0028] In the accompanying drawings: 1, housing; 2, first input shaft; 3, second input shaft; 4, output shaft; 5, planetary reduction assembly; 6, first reduction transmission assembly; 7, transmission shaft; 8, second reduction transmission assembly; 51, sun gear; 52, planetary gear; 53, internal gear; 61, intermediate shaft; 62, first gear; 63, second gear; 64, third gear; 81, fourth gear; 82, fifth gear. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Figure 1This is a schematic diagram of the structure of a differential planetary reducer of the utility model. Figure 1 FIG. 1 shows a differential planetary reducer of a preferred embodiment, comprising: a housing 1, two transmission shafts 7, a first reduction transmission assembly 6 and a second reduction transmission assembly 8. The housing 1 is rotatably mounted with a first input shaft 2 (for driving the trolley), a second input shaft 3 (for lifting and opening and closing drive) and two output shafts 4 which are parallel to each other. The two transmission shafts 7 are rotatably arranged in the housing 1, and the two transmission shafts 7 are respectively connected to the two output shafts 4 through a set of planetary reduction assemblies 5. Each planetary reduction assembly 5 comprises: an internal gear 53, a planetary gear 52 The sun gear 51 and the internal gear 53 are coaxially rotatable and sleeved on the outside of the transmission shaft 7. The planetary gear 52 is rotatably connected to the output shaft 4 and is located between the sun gear 51 and the internal gear 53. The sun gear 51 is coaxially connected to the transmission shaft 7, and the planetary gear 52 is meshed with the sun gear 51 and the internal gear 53 respectively, wherein the outer circumferential surfaces of the two internal gears 53 are each provided with external teeth, and the two external teeth are meshed. The first reduction transmission assembly 6 is arranged between the first input shaft 2 and one of the internal gears 53, and the second reduction transmission assembly 8 is arranged between the second input shaft 3 and the two transmission shafts 7.

[0033] In this embodiment, the functions of lifting, opening and closing, and trolley operation are integrated into a compact transmission mechanism, which not only facilitates the maintenance of the equipment and reduces maintenance costs, but also greatly reduces the footprint of the equipment and improves space utilization while ensuring that all functions are not affected.

[0034] In this embodiment, two sets of output shafts 4 are provided, and different speed ratios can be achieved through the power input of the first input shaft 2 and the second input shaft 3 to meet the needs of different application scenarios.

[0035] Furthermore, as a preferred embodiment, an output shaft 4, a second input shaft 3, another output shaft 4, and a first input shaft 2 are sequentially arranged in the transverse direction.

[0036] Furthermore, as a preferred embodiment, the two output shafts 4 are arranged on one side of the housing 1 , and the second input shaft 3 is arranged on the other side of the housing 1 .

[0037] Furthermore, as a preferred embodiment, both ends of the first input shaft 2 extend to the outside of the housing 1 .

[0038] Further, as a preferred embodiment, the first reduction transmission assembly 6 includes an intermediate shaft 61, a first gear 62, a second gear 63 and a third gear 64. The intermediate shaft 61 is rotatably arranged in the housing 1, the first gear 62 is sleeved on the outside of the first input shaft 2, the second gear 63 is sleeved on the outside of the intermediate shaft 61 and meshes with the first gear 62, the third gear 64 is sleeved on the outside of the intermediate shaft 61 and meshes with the external teeth on one of the internal gears 53, and the transmission ratios between the first gear 62 and the second gear 63 and between the third gear 64 and the external teeth are both greater than one.

[0039] Furthermore, as a preferred embodiment, the first gear 62 and the first input shaft 2, and the third gear 64 and the intermediate shaft 61 are all integrated structures.

[0040] Furthermore, as a preferred embodiment, the second reduction transmission assembly 8 includes a fourth gear 81 and two fifth gears 82, the fourth gear 81 is connected to the outside of the second input shaft 3, the two fifth gears 82 are respectively mounted on the outside of the two transmission shafts 7, and the two fifth gears 82 are respectively meshed with the fourth gear 81, and the transmission ratio between the fourth gear 81 and the fifth gear 82 is greater than one.

[0041] This embodiment cleverly combines the excellent performance of the planetary reduction assembly 5 and the gear transmission structure to achieve accurate and efficient power transmission. Its unique transmission ratio design, combined with a compact structural layout, not only improves the transmission efficiency, but also ensures the stability and reliability of the power transmission process, laying a solid foundation for the efficient operation of the ship unloader.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A differential planetary reducer, characterized in that: include: A box body, on which a first input shaft, a second input shaft and two output shafts parallel to each other are rotatably mounted; Two transmission shafts, the two transmission shafts are rotatably arranged in the housing, and the two transmission shafts are respectively connected to the two output shafts through a set of planetary reduction assemblies, each of the planetary reduction assemblies comprises: an internal gear, a planetary gear and a sun gear, the internal gear is coaxially rotatably sleeved on the outside of the transmission shaft, the planetary gear is rotatably connected to the output shaft and is located between the sun gear and the internal gear, the sun gear is coaxially connected to the transmission shaft, and the planetary gear is respectively meshed with the sun gear and the internal gear, wherein the outer circumferential surfaces of the two internal gears are provided with external teeth, and the two external teeth are meshed; a first reduction transmission assembly, the first reduction transmission assembly being disposed between the first input shaft and one of the internal gears; The second reduction transmission component is arranged between the second input shaft and the two transmission shafts.

2. The differential planetary reducer according to claim 1, characterized in that: One of the output shafts, the second input shaft, another of the output shafts, and the first input shaft are sequentially arranged in a transverse direction.

3. The differential planetary reducer according to claim 2, characterized in that: The two output shafts are arranged on one side of the box body, and the second input shaft is arranged on the other side of the box body.

4. The differential planetary reducer according to claim 2, characterized in that: Both ends of the first input shaft extend to the outside of the housing.

5. The differential planetary reducer according to claim 1, characterized in that: The first reduction transmission assembly comprises: An intermediate shaft, the intermediate shaft being rotatably disposed in the housing; A first gear, wherein the first gear is sleeved on the outside of the first input shaft; A second gear, which is sleeved on the outside of the intermediate shaft and meshes with the first gear; The third gear is sleeved on the outside of the intermediate shaft and meshes with the external teeth on one of the internal gears, and the transmission ratios between the first gear and the second gear and between the third gear and the external teeth are both greater than one.

6. The differential planetary reducer according to claim 5, characterized in that: The first gear and the first input shaft, and the third gear and the intermediate shaft are all integrated structures.

7. The differential planetary reducer according to claim 1, characterized in that: The second reduction transmission assembly comprises: a fourth gear connected to an exterior of the second input shaft; Two fifth gears are respectively sleeved on the outside of the two transmission shafts, and the two fifth gears are respectively meshed with the fourth gear, and the transmission ratio between the fourth gear and the fifth gear is greater than one.

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