Double-split gearbox

Abstract

The invention discloses a double-branch flow velocity box, and relates to the technical field of gear boxes. The double-shunt gearbox comprises an adapter disc connected with a low-speed gear and an adjusting disc connected with a high-speed gear, the low-speed gear is in meshing transmission with an input gear arranged on an input shaft, the high-speed gear is in meshing transmission with an output gear arranged on an output shaft, and the adapter disc is detachably connected with the adjusting disc. The adapter disc is used for adjusting the meshing position of the low-speed gear, and the adjusting disc is used for adjusting the meshing position of the high-speed gear. According to the double-flow-dividing gearbox, the problems that in the prior art, a double-flow-dividing gearbox adopts a hydraulic adjusting mode to adjust and synchronize, the adjusting operation is tedious, and the adjusting speed is low are solved.

Description

Technical Field

[0001] This invention relates to the field of gearbox technology, and more particularly to a dual-flow gearbox. Background Technology

[0002] When a gearbox experiences phase misalignment, inconsistent speeds, uneven load, or abnormal operation, synchronization must be adjusted. In developing this invention, the inventors discovered at least the following problems with existing technologies: Currently, gearboxes mostly use hydraulic adjustment for synchronization, which is cumbersome and slow. In dual-flow gearboxes, due to the flow-splitting structure and the greater number of gears, synchronization adjustment is even more complex. Summary of the Invention

[0003] The purpose of this invention is to provide a dual-flow gearbox that facilitates synchronization.

[0004] To achieve this objective, on the one hand, a dual-flow gearbox is provided, including a transfer plate connected to a low-speed gear and an adjustment plate connected to a high-speed gear. The low-speed gear meshes with an input gear mounted on an input shaft, and the high-speed gear meshes with an output gear mounted on an output shaft. The transfer plate and the adjustment plate are detachably connected. The transfer plate is used to adjust the meshing position of the low-speed gear, and the adjustment plate is used to adjust the meshing position of the high-speed gear.

[0005] Furthermore, the high-speed gear is mounted on the high-speed split shaft, the adjusting disc is fixedly connected to one end of the high-speed split shaft, and the high-speed split shaft is also provided with a first high-speed bearing position and a second high-speed bearing position, with the first high-speed bearing position located between the adjusting disc and the high-speed gear.

[0006] Furthermore, the adjusting disc, the first high-speed bearing mounting position, the high-speed gear, and the second high-speed bearing mounting position are integrally formed.

[0007] Furthermore, the high-speed splitter shaft is a hollow shaft.

[0008] Furthermore, it also includes an intermediate shaft that passes through the shaft hole of the high-speed splitter shaft, the intermediate shaft being clearance-fitted with the shaft hole, and the adapter plate being disposed at the end of the intermediate shaft.

[0009] Furthermore, the low-speed gear is mounted on the low-speed splitter shaft, and the end of the intermediate shaft furthest from the adapter plate is connected to the low-speed splitter shaft.

[0010] Furthermore, the low-speed splitter shaft and the intermediate shaft are connected by a diaphragm coupling.

[0011] Furthermore, the low-speed splitter shaft also includes a first low-speed bearing position for accommodating a bearing and a second low-speed bearing position for accommodating another bearing.

[0012] Furthermore, the input gear and low-speed gear on the input shaft use herringbone gear transmission; the output gear and high-speed gear on the output shaft also use herringbone gear transmission.

[0013] Furthermore, both the high-speed and low-speed split shafts are supported within the housing using sliding bearings.

[0014] One of the above technical solutions has the following advantages or beneficial effects: In this invention, the dual-flow gearbox allows for synchronization adjustment of gear meshing by separating the adapter plate and the adjusting plate. The adapter plate is connected to one end of the intermediate shaft, and the other end of the intermediate shaft is connected to the low-speed gear. Operating the adapter plate allows for adjustment of the low-speed gear's position, thereby synchronizing the low-speed gear with the input shaft. Since the adjusting plate is fixedly connected to the high-speed gear, operating the adjusting plate allows for adjustment of the high-speed gear's position, thereby synchronizing the high-speed gear with the output shaft. Therefore, the dual-flow gearbox of this invention eliminates the need for hydraulic tools during synchronization adjustments; only conventional tools are required to remove the reamed bolts, significantly improving assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the dual-flow gearbox after the top cover is removed in the embodiment; Figure 2 yes Figure 1 A partial diagram of the structure for adjusting synchronization. Figure 3 This is a schematic diagram of the structure of the first low-speed splitter shaft; Figure 4 This is a schematic diagram of the structure of the first high-speed splitter shaft.

[0016] In the diagram: 1-Input shaft; 2-First low-speed gear; 3-Second low-speed gear; 4-First intermediate shaft; 5-Second intermediate shaft; 6-First high-speed gear; 7-Second high-speed gear; 8-Output gear; 9-First adjusting plate; 10-Second adjusting plate; 12-First coupling; 13-Second coupling; 14-First adapter plate; 15-Second adapter plate; 16-First partition plate; 17-Second partition plate; 18-First low-speed splitter shaft; 19-Second low-speed splitter shaft; 20-First high-speed bearing position; 21-Second high-speed bearing position; 22-First low-speed bearing position; 23-Second low-speed bearing position; 24-First high-speed splitter shaft; 25-Second high-speed splitter shaft; a-First cavity; b-Second cavity; c-Third cavity. Detailed Implementation

[0017] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0018] like Figures 1-2 The following description uses a dual-flow gearbox as an example of a speed-increasing gearbox. The gearbox includes an input shaft 1 with an input gear fixedly mounted on it and an output shaft 8 with an output gear fixedly mounted on it. The input shaft is the shaft connected to the power source, and the output shaft is the shaft connected to the equipment. Those skilled in the art will readily recognize that when the gearbox needs to be used for speed reduction, the input shaft and output shaft in this embodiment can simply be interchanged without changing the internal structure of the gearbox. Therefore, the gearbox in this embodiment can also be used as a speed reduction gearbox.

[0019] The gear transmission structure inside the dual-flow gearbox of this embodiment includes a low-speed flow splitter and a high-speed flow splitter from the input end to the output end. The low-speed flow splitter meshes with the gear on the input shaft, and the high-speed flow splitter meshes with the gear on the output shaft. For the dual-flow gearbox, two sets of both the low-speed and high-speed flow splitters are provided.

[0020] like Figures 1-3 The low-speed splitting structure includes two low-speed splitting shafts, namely a first low-speed splitting shaft 18 and a second low-speed splitting shaft 19. A first low-speed gear 2 is fixedly mounted on the first low-speed splitting shaft 18, and a second low-speed gear 3 is fixedly mounted on the second low-speed splitting shaft 19. The input gear meshes with the first low-speed gear 2 and the second low-speed gear 3, and the input gear simultaneously drives the first low-speed gear 2 and the second low-speed gear 3.

[0021] In this embodiment, the first low-speed split shaft 18 and the second low-speed split shaft 19 have the same structure, but different positions. Figure 3 The structure of the first low-speed splitter shaft 18 is shown. Bearing positions for mounting bearings are provided on both sides of the first low-speed gear 2, namely a first low-speed bearing position 22 and a second low-speed bearing position 23. These bearing positions fix and position the bearings. Figure 3 A sliding bearing is provided at the first low-speed bearing position 22 and the second low-speed bearing position 23. Low-speed bearing positions are also provided on both sides of the second low-speed gear on the second low-speed split shaft 19.

[0022] Optionally, the input gear on the input shaft and the low-speed gear on the low-speed splitter shaft are driven by herringbone gears, and both ends of the low-speed splitter shaft are supported by sliding bearings, which are mounted on bearing seats. Optionally, the input gear on the input shaft and the first low-speed gear, as well as the input gear on the input shaft and the second low-speed gear, are driven by herringbone gears, and both ends of all the herringbone gears are supported by sliding bearings.

[0023] like Figures 1-4 The high-speed splitter structure includes two high-speed splitter shafts, namely a first high-speed splitter shaft 24 and a second high-speed splitter shaft 25. A first high-speed gear is provided on the first high-speed splitter shaft, and a second high-speed gear is provided on the second high-speed splitter shaft. Both the first and second high-speed gears mesh with the output shaft and jointly drive the output shaft to rotate. In this embodiment, the first and second high-speed splitter shafts have the same structure but different positions. Figure 4 The structure of the first high-speed splitter shaft is shown. The first high-speed splitter shaft has a first high-speed gear 6, and on both sides of the first high-speed gear are a first high-speed bearing mounting position 20 and a second high-speed bearing mounting position 21, respectively. The high-speed splitter shaft is supported in the gearbox by two bearings at the first high-speed bearing mounting position 20 and the second high-speed bearing mounting position 21.

[0024] Optionally, the output gear and high-speed gear on the output shaft adopt herringbone gear transmission. Herringbone gears have the advantages of high speed, heavy load, low noise, long service life, and compact structure. The two ends of the high-speed splitter shaft are supported by sliding bearings, which are mounted in bearing positions. Optionally, the output gear and the first high-speed gear, as well as the output gear and the second high-speed gear on the output shaft, both adopt herringbone gear transmission, and all of the aforementioned herringbone gears are supported by sliding bearings at both ends.

[0025] One end of the high-speed splitter shaft is also equipped with an adjusting disc for adjusting the synchronous transmission of the gears, and the adjusting disc has a flange connection structure. For example... Figure 4 Optionally, the high-speed gear 6 is integrally formed with the high-speed splitter shaft. Optionally, the adjusting disc is integrally formed with the high-speed splitter shaft. Optionally, the adjusting disc, two bearing mounting positions, and high-speed gear are integrally formed on the high-speed splitter shaft to improve the overall strength of the high-speed gear. Figure 2 and Figure 4 The structure of the first high-speed gear is shown, and the structure of the second high-speed gear is the same as that of the first high-speed gear.

[0026] like Figure 4 In this embodiment, the high-speed splitter shaft is a hollow shaft with a shaft hole in the middle, the length of which is the same as the axis. The gearbox in this embodiment is also provided with an intermediate shaft, which passes through the shaft hole of the high-speed splitter shaft. The intermediate shaft and the high-speed splitter shaft are clearance-fitted, and the intermediate shaft can rotate freely within the shaft hole of the high-speed splitter shaft.

[0027] One end of the intermediate shaft is connected to the low-speed splitter shaft. Optionally, the intermediate shaft and the low-speed splitter shaft are connected by a coupling. Further, the intermediate shaft and the low-speed splitter shaft are connected by a diaphragm coupling, preferably a single diaphragm coupling, which can reduce the installation space requirements, reduce the weight of the housing and the overall size. At the same time, the single diaphragm coupling can effectively compensate for the cumulative error of the shaft system, thereby ensuring its transmission accuracy.

[0028] An adapter plate is fixedly mounted at the other end of the intermediate shaft, and the adapter plate can be fixedly connected to the intermediate shaft via a key. All adapter plates have flange connections. The adapter plate and the adjusting plate are detachably connected via their respective flanges. Optionally, the adapter plate and the adjusting plate are connected via reamed bolts. The adjusting plate and the adapter plate constitute a structure for adjusting gear synchronization. During normal operation of the gearbox, the adjusting plate and the adapter plate are connected. When the gearbox is stopped and the phase between the gears needs to be adjusted, the flanges are disassembled to separate the adjusting plate and the adapter plate.

[0029] In this embodiment, the gear adjustment method inside the gearbox is as follows: The flange is disassembled to separate the adjusting plate and the adapter plate. When it is necessary to adjust the gear on the low-speed split shaft, the user holds the adapter plate for adjustment. Since the adapter plate is fixed to the intermediate shaft, and the intermediate shaft is connected to the low-speed split shaft, the user can adjust the meshing phase between the low-speed gear on the low-speed split shaft and the input shaft by holding the adapter plate. When it is necessary to adjust the high-speed gear on the high-speed split shaft, the user holds the adjusting plate for adjustment. The adjusting plate is integrally formed with the high-speed split shaft, and the user can adjust the meshing phase between the high-speed gear on the high-speed split shaft and the output shaft by holding the adjusting plate.

[0030] In this embodiment of the dual-flow gearbox, the adapter plate and the adjustment plate are separated when gear meshing synchronization needs to be adjusted. The dual-flow gearbox has two sets of gear meshing: one set involves the gear on the input shaft meshing with the gears on the two low-speed flow shafts, and the other set involves the gear on the output shaft meshing with the gears on the two high-speed flow shafts. The adapter plate is operated to adjust the synchronization of the input gear on the input shaft meshing with the low-speed gears on the two low-speed flow shafts; the adjustment plate is operated to adjust the synchronization of the output gear on the output shaft meshing with the high-speed gears. After all gear phases are adjusted, the adapter plate and the adjustment plate are fixedly connected. Therefore, in this embodiment of the dual-flow gearbox, synchronization adjustment does not require hydraulic tools; only conventional tools are needed to remove the reamed bolts, greatly improving assembly efficiency.

[0031] like Figures 1-4 As shown, in this embodiment of the dual-splitter gearbox, there are two intermediate shafts and two adapter plates, which are respectively fitted into the first high-speed splitter shaft and the second high-speed splitter shaft.

[0032] One end of the first intermediate shaft 4 is connected to the first low-speed splitter shaft 18, and its main body is fitted inside the first high-speed splitter shaft. The other end of the first intermediate shaft 4 is provided with a first adapter plate 14, which is detachably connected to the first adjusting plate 9 at the end of the first high-speed splitter shaft via a flange. When it is necessary to adjust the relative position between the first low-speed gear and the input gear, or between the first high-speed gear and the output gear, loosen the first adapter plate 14 and the first adjusting plate 9. Hold the first adapter plate 14 to adjust the relative position between the first low-speed gear and the input gear, and hold the first adjusting plate 9 to adjust the relative position between the first high-speed gear and the output gear.

[0033] One end of the second intermediate shaft 5 is connected to the second low-speed splitter shaft 19, and its main body is fitted inside the second high-speed splitter shaft. The other end of the second intermediate shaft 5 is provided with a second adapter plate 15, which is detachably connected to the second adjusting plate 10 at the end of the second high-speed splitter shaft via a flange. When it is necessary to adjust the relative position between the second low-speed gear and the input gear, or between the second high-speed gear and the output gear, loosen the second adapter plate 15 and the second adjusting plate 10. Hold the second adapter plate 15 to adjust the relative position between the second low-speed gear and the input gear, and hold the second adjusting plate 10 to adjust the relative position between the second high-speed gear and the output gear.

[0034] Optionally, the first intermediate shaft 4 is connected to the first low-speed splitter shaft 18 via a first coupling 12. The second intermediate shaft 5 is connected to the first low-speed splitter shaft 19 via a second coupling 13. Optionally, both the first coupling 12 and the second coupling 13 are diaphragm couplings. Diaphragm couplings generate elastic deformation while transmitting torque, which can effectively compensate for axial, radial, and angular installation errors, and have the advantage of strong compensation capability.

[0035] In this embodiment of the dual-split gearbox, when gear meshing exhibits phase misalignment, inconsistent speeds, uneven load, or abnormal operation, synchronization can be adjusted by loosening the bolts between the adapter plate and the adjusting plate. Loosen the connecting bolts between the adapter plate and the adjusting plate to separate them. The adjustment process involves operating the adapter plate to adjust the meshing between the low-speed split shaft and the input shaft, and operating the adjusting plate to adjust the meshing between the high-speed split shaft and the output shaft.

[0036] Optionally, in this embodiment of the dual-splitter gearbox, the low-speed splitter shaft can be omitted, and the intermediate shaft can be extended so that the low-speed gear is directly fixed to the end of the intermediate shaft away from the adapter plate.

[0037] In this embodiment of the dual-flow gearbox, the housing is divided into multiple cavities from the input end to the output end by a partition plate, and the partition plate is provided with bearing seats for mounting bearings. Figure 2As shown, the housing is divided into a first cavity a and a second cavity b by a first partition plate 16, and further divided into a second cavity b and a third cavity c by a second partition plate 17. The input shaft and the two low-speed split shafts are supported at both ends on the front wall of the housing and the first partition plate 16. The output shaft and the two low-speed split shafts are supported at both ends on the second partition plate 17 and the front wall of the housing. Optionally, the output shaft is supported at both ends by tilting pad bearings, which offer excellent high-speed performance, less stringent alignment requirements, and convenient installation and maintenance. Optionally, the input shaft is supported at both ends by elliptical pad bearings, which provide better alignment and stability.

[0038] In this embodiment of the dual-splitter gearbox, during normal operation, the first adapter plate and the first adjusting plate are tightened, and the second adapter plate and the second adjusting plate are tightened. Currently, when used as a speed-increasing gearbox, the power machinery (such as an electric motor) is connected to the input shaft and drives it to rotate. The input shaft distributes torque to the two low-speed split shafts by meshing the input gear with the low-speed gears on the two low-speed split shafts. Since each low-speed split shaft is connected to a high-speed split shaft, the torque is transmitted to the high-speed split shaft. The high-speed split shaft drives the output shaft to rotate by meshing the high-speed gear with the output gear, thereby transmitting the torque from the input shaft to the output shaft.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or two parts; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" a second feature can include direct contact between the second and second features, or contact between the second and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the second feature being directly above or diagonally above the second feature, or simply indicates that the second feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature includes the second feature being directly below or diagonally below the second feature, or simply indicates that the second feature is at a lower horizontal level than the second feature.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A double-split gearbox, characterized in that, The device comprises a transfer disc connected with a low-speed gear and an adjusting disc connected with a high-speed gear, the low-speed gear is engaged with an input gear arranged on an input shaft, the high-speed gear is engaged with an output gear arranged on an output shaft, the transfer disc is detachably connected with the adjusting disc, the transfer disc is used for adjusting the engagement position of the low-speed gear, and the adjusting disc is used for adjusting the engagement position of the high-speed gear.

2. The dual flow gearbox of claim 1, wherein, The high-speed gear is arranged on a high-speed split shaft, the adjusting disc is fixedly connected to one end of the high-speed split shaft, and the high-speed split shaft is further provided with a first high-speed bearing position and a second high-speed bearing position, and the first high-speed bearing position is arranged between the adjusting disc and the high-speed gear.

3. The dual flow gearbox of claim 2, wherein, The adjusting disc, the first high-speed bearing position, the high-speed gear and the second high-speed bearing position are integrally formed.

4. The dual flow gearbox of claim 2, wherein, The high-speed split shaft is a hollow shaft.

5. The dual flow gearbox of claim 4, wherein, The device further comprises an intermediate shaft, the intermediate shaft passes through a shaft hole of the high-speed split shaft, the intermediate shaft is in clearance fit with the shaft hole, and the transfer disc is arranged at an end of the intermediate shaft.

6. The dual flow gearbox of claim 5, wherein, The low-speed gear is arranged on a low-speed split shaft, and an end of the intermediate shaft, which is away from the transfer disc, is connected with the low-speed split shaft.

7. The dual flow gearbox of claim 6, wherein, The low-speed split shaft and the intermediate shaft are connected by a diaphragm coupling.

8. The dual flow gearbox of claim 5, wherein, The low-speed split shaft further comprises a first low-speed bearing position for arranging a bearing and a second low-speed bearing position for arranging another bearing.

9. The dual flow gearbox of claim 1, wherein, The input gear on the input shaft is in hypoid gear transmission with the low-speed gear, and the output gear on the output shaft is in hypoid gear transmission with the high-speed gear.

10. The dual flow gearbox of claim 6, wherein, The high-speed split shaft and the low-speed split shaft are both supported in the box by sliding bearings.

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