Gear box
By designing detachable wind deflector lugs in the gearbox, the problem of difficult disassembly and assembly of high-speed gearboxes was solved, and an easy-to-disassemble gearbox structure was achieved.
Patent Information
- Application Number
- CN202511994279.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-02-17
AI Technical Summary
In existing high-speed gearboxes, the installation position of the baffle plate can easily obstruct the disassembly of other parts, leading to difficulties in disassembly and assembly, especially in the early stages of research and development when facing unpredictable situations.
A gearbox was designed with wind deflectors that are detachably connected to the gearbox body at the gearbox split surface via lugs. The gearbox includes upper, lower, upper, and middle wind deflectors, with lugs located at the gearbox split surface to ensure convenient assembly and disassembly.
This design enables easy disassembly and assembly of the gearbox, reduces the difficulty of disassembling and assembling the wind deflector, and improves the maintenance efficiency of the gearbox.
Smart Images
Figure CN121539604A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of gearboxes, and in particular to a gearbox. Background Art
[0002] In some systems, such as compressed air energy storage systems, the exhaust pressure of the compressor in the system is greater than 10 MPa, and the gearbox supporting this compressor belongs to a high-speed gearbox. For a high-speed gearbox, in order to ensure good working conditions, a closed gear drive is generally adopted. When the high-speed gears in the high-speed gearbox rotate, a wind field will be generated. Coupled with the narrow internal space of the gears, strong airflows will be formed when the high-speed gears rotate, throwing the lubricating oil in the gearbox into a mist or large oil droplets. The lubricating oil is thrown onto the box body and is not easy to flow back, which will cause the liquid level of the gearbox to be evacuated and the tooth surface lubrication of the gears to be insufficient, thereby causing tooth burning and biting on the gear surface.
[0003] Installing a wind deflector in the gearbox can solve the above technical problems. The wind deflector is used to control the splashing of the lubricating oil, reduce the disturbance, and guide the lubricating oil to flow to the key parts. Based on the technical effects of the wind deflector, the wind deflector not only needs to have a reasonable shape and angle, but also needs to be installed at a specific position.
[0004] In the process of implementing the present invention, the inventor found that there are at least the following problems in the prior art: the installation position of the wind deflector usually hinders the disassembly of other parts, so the wind deflector is usually fixed with detachable bolts. As the gear speed increases, if only by increasing the number of wind deflectors and adjusting the position of the wind deflector to solve the problem of splashing of high-temperature lubricating oil in the gearbox, the gearbox will have the technical problem of difficult disassembly and assembly. If this high-speed gearbox is in the initial stage of research and development and the product is not fully finalized, when facing various unpredictable situations and frequent on-site disassembly of the gearbox, the above problems are particularly obvious. Summary of the Invention
[0005] The purpose of the present invention is to provide a gearbox that is easy to disassemble and assemble.
[0006] To achieve this purpose, on the one hand, a gearbox is provided, which includes a box body. A gear is arranged in the box body, and a wind deflector for blocking the splashing of the lubricating oil at the gear is arranged between the box body and the gear. The wind deflector is detachably connected to the box body at the split surface through lugs.
[0007] Furthermore, the wind deflector covers the outside of the gear and there is a gap between the wind deflector and the gear that does not interfere with the rotation of the gear.
[0008] Furthermore, the gearbox includes an upper housing and a lower housing, and the wind deflector includes an upper wind deflector and a lower wind deflector. The upper wind deflector is located inside the upper housing, and its lugs are detachably connected to the dividing surface. The lower wind deflector is located inside the lower housing, and its lugs are detachably connected to the dividing surface.
[0009] Furthermore, the housing includes an upper housing, a middle housing, and a lower housing. The dividing surface between the upper housing and the middle housing is the upper dividing surface, and the dividing surface between the middle housing and the lower housing is the middle dividing surface. The wind deflector includes an upper wind deflector, a middle wind deflector, and a lower wind deflector. The upper wind deflector is located inside the upper housing, the middle wind deflector is located inside the middle housing, and the lower wind deflector is located inside the lower housing. The lugs of the upper wind deflector and the lugs of the middle wind deflector are detachably connected to the upper dividing surface, and the lugs of the middle wind deflector and the lugs of the lower wind deflector are detachably connected to the middle dividing surface.
[0010] Furthermore, the gear includes an input gear, a first output gear meshing with the input gear, and a second output gear meshing with the input gear; the input gear, the first output gear, and the second output gear are all located at the center split box surface; the two ends of the center baffle are provided with a first auxiliary baffle and a second auxiliary baffle, the first auxiliary baffle is used to block lubricating oil splashing at the first output shaft gear located in the center box, and the second auxiliary baffle is used to block lubricating oil splashing at the second output shaft gear located in the center box; one end of the first auxiliary baffle is connected to the center baffle, and the other end is provided with a lug for detachable connection with the center split box surface; one end of the second auxiliary baffle is connected to the center baffle, and the other end is provided with a lug for detachable connection with the center split box surface.
[0011] Furthermore, the lower wind deflector is provided with a third auxiliary wind deflector and a fourth auxiliary wind deflector at both ends. The third auxiliary wind deflector is used to block lubricating oil splashing at the first output shaft gear located in the lower housing, and the fourth auxiliary wind deflector is used to block lubricating oil splashing at the second output shaft gear located in the lower housing. One end of the third auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a lug for detachable connection with the middle split box surface. One end of the fourth auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a lug for detachable connection with the middle split box surface.
[0012] Furthermore, the upper part of the lower wind deflector is open, and the lower wind deflector is also provided with a first oil guide channel communicating with the open. The lubricating oil blocked by the wind deflector enters the first oil guide channel and is guided to the inner bottom surface of the gearbox through the first oil guide channel.
[0013] Furthermore, it also includes a shaft for supporting the gear, with bearings at both ends of the shaft; a second oil guide channel is also provided on the front side of the baffle plate, with the upper opening of the second oil guide channel located at the lower part of the bearing and a distance from the bearing at one end, and the lower opening of the second oil guide channel located near the inner bottom surface of the gearbox, and the second oil guide channel is used to guide the lubricating oil used up by the bearing to the inner bottom surface of the gearbox.
[0014] Furthermore, the wind deflector includes an upper wind deflector, a middle wind deflector, and a lower wind deflector. The second oil guide channel includes an upper annular channel located on one side of the middle wind deflector and a lower annular channel located on the same side of the lower wind deflector. The second oil guide channel is isolated from the gear receiving cavity inside the wind deflector and is used to guide the lubricating oil used up by the bearing.
[0015] Furthermore, a third oil guide is provided on the rear side of the wind deflector, which is symmetrically arranged with the second oil guide channel to guide the lubricating oil used up in the bearing.
[0016] One of the above technical solutions has the following advantages or beneficial effects: the gearbox housing contains gears, and a baffle plate is provided between the housing and the gears to prevent lubricating oil from splashing at the gears. The baffle plate is detachably connected to the housing at the split surface via lugs, providing a large wrench space and making the gearbox easy to disassemble and assemble. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the gearbox structure in this embodiment; Figure 2 This is a schematic diagram of the gearbox in this embodiment, with the gearbox body cut along a line perpendicular to the mid-section. Figure 3 It is a 3D view of the upper windshield; Figure 4 This is the front view of the upper windshield; Figure 5 yes Figure 4 The left view; Figure 6 yes Figure 4 Top view; Figure 7 It is a 3D view of the center windshield; Figure 8 This is the front view of the center windshield; Figure 9 yes Figure 8 The left view; Figure 10 yes Figure 8 Top view; Figure 11 It is a 3D view of the lower windshield; Figure 12 This is the front view of the lower windshield; Figure 13 yes Figure 12 The left view; Figure 14 yes Figure 12 Top view; Figure 15 This is a schematic diagram of the assembly of the wind deflector in this embodiment.
[0018] In the diagram: 100 - Input shaft; 210 - First output shaft; 220 - Second output shaft; 230 - Third output shaft; 310 - Lower housing; 320 - Middle housing; 330 - Lower housing; 340 - Middle split housing surface; 350 - Upper split housing surface; 410 - Lower windshield; 411 - Front side plate of lower windshield; 412 - Rear side plate of lower windshield; 413 - Fifteenth lug; 414 - Sixteenth lug; 415 - Seventeenth lug; 416 - Eighteenth lug; 417 - First oil guide channel; 418 - Arc bottom plate of lower windshield; 419 - Oil leakage hole; 420 - Third auxiliary windshield; 421 - Front side plate of third auxiliary windshield; 422 - Rear side plate of third auxiliary windshield; 423 - Arc bottom plate of third auxiliary windshield; 424 - Sixth shield 425-Nineteenth Ear; 426-Twentieth Ear; 427-First Reinforcing Rib; 428-Second Reinforcing Rib; 430-Fourth Attached Windshield; 431-Front Side Plate of Fourth Attached Windshield; 432-Rear Side Plate of Fourth Attached Windshield; 433-Arched Bottom Plate of Fourth Attached Windshield; 434-Seventh Clearance Opening; 435-Twenty-first Ear; 436-Twenty-second Ear; 437-Third Reinforcing Rib; 438-Fourth Reinforcing Rib; 440-First Attached Windshield; 441-Arched Top Surface of First Attached Windshield; 442-Front Side Plate of First Attached Windshield; 443-Rear Side Plate of First Attached Windshield; 444-Fourth Observation Hole; 445-Eleventh Ear; 446-Twelfth Ear; 447-Fourth Clearance Opening; 450-Second Attached wind deflector; 451-Second attached wind deflector arc top surface; 452-Second attached wind deflector front side panel; 453-Second attached wind deflector rear side panel; 454-Fifth observation hole; 455-Thirteenth lug; 456-Fourteenth lug; 457-Fifth clearance opening; 460-Middle wind deflector; 461-Middle wind deflector arc top panel; 462-Middle wind deflector front side panel; 463-Middle wind deflector rear side panel; 467-Second observation hole; 468-Third observation hole; 469-Fifth lug; 4610-Sixth lug; 4611-Seventh lug; 4612-Eighth lug; 4613-Ninth lug; 4614-Tenth lug; 4615-Second clearance opening; 4616-Third clearance opening; 470-Upper wind deflector; 471 472- Upper windshield arched top plate; 473- Upper windshield front panel; 474- Upper windshield rear panel; 475- First observation hole; 476- First lug; 477- Second lug; 478- Third lug; 479- Fourth lug; 480- First clearance opening; 481- Second oil guide channel; 481- Upper annular passage of the second oil guide channel; 4811- Straight section of the upper annular channel of the second oil guide channel; 4812- Upper left arc-shaped section of the upper annular channel of the second oil guide channel; 4813- Upper right arc-shaped section of the upper annular channel of the second oil guide channel; 482- Lower annular channel of the second oil guide channel; 4821- Lower left arc-shaped section of the lower annular channel of the second oil guide channel; 4822- Lower right arc-shaped section of the lower annular channel of the second oil guide channel;4823 - Straight section of the lower annular channel of the second oil guide channel; 490 - Third oil guide channel; 491 - Upper annular channel of the third oil guide channel; 492 - Lower annular channel of the upper annular channel of the third oil guide channel. Detailed Implementation
[0019] 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.
[0020] Example:
[0021] like Figure 1 As shown, the gearbox in this embodiment has one input shaft and three output shafts. An input gear is mounted on the input shaft 100. A first output shaft 210 and a second output shaft 220 are located on either side of the input shaft 100, and an output shaft is located above the input shaft 100. A first output gear meshing with the input gear is mounted on the first output shaft 210, a second output gear meshing with the input gear is mounted on the second output shaft 220, and a third output gear meshing with the input gear is mounted on the third output shaft 230. The gearbox housing includes an upper housing 330, a middle housing 320, and a lower housing 310.
[0022] Figure 2 This is a structural diagram showing the box body cut open from sections perpendicular to the middle and upper dividing surfaces. (See diagram below.) Figure 2 As shown, the input shaft 100, the first output shaft 210, and the second output shaft 220 are located at the middle dividing surface 340 of the middle housing 320 and the lower housing 310, and the third output shaft 230 is located at the upper dividing surface 350 of the upper housing 330 and the middle housing 320.
[0023] like Figure 2 As shown, the gearbox in this embodiment is equipped with a wind baffle, which includes an upper wind baffle 470, a middle wind baffle 460, and a lower wind baffle 410. The wind baffle has gaps between itself and the top and side walls of the gear to avoid interfering with gear transmission.
[0024] like Figures 3-6As shown, the upper baffle 470 is used to control the splashing of lubricating oil when the input gear and the third output shaft 230 mesh. The upper baffle 470 is dome-shaped and includes an upper baffle arc-shaped top plate 471, a front panel 472 connected to the arc edges on both sides of the arc-shaped top plate 471, and a rear panel 473. The width of the arc-shaped top plate 471 of the upper baffle is the width between the front panel 472 and the rear panel 473 of the upper baffle. The width of the arc-shaped top plate 471 of the upper baffle is related to the width of the third output gear, so that the upper baffle 470 does not interfere with the gear transmission of the third output gear, and can control the splashing of lubricating oil between the input gear and the third output gear during meshing. A first observation hole 474 for observing the gear meshing is provided on the arc-shaped top plate of the upper baffle 470, and an observation window is provided on the upper housing at a position corresponding to the first observation hole 474.
[0025] like Figures 3-6 As shown, the front and rear sides of the upper wind deflector are provided with lugs for detachable connection to the upper compartment surface 350 located in the middle housing. Optionally, the lugs have through holes for bolts to pass through. Optionally, the front side 472 of the upper wind deflector is provided with two lugs detachably connected to the front of the upper compartment surface 350, namely the first lug 475 and the second lug 476; the rear side 473 of the upper wind deflector is provided with two lugs detachably connected to the rear of the upper compartment surface 350, namely the third lug 477 and the fourth lug 478.
[0026] like Figures 3-6 As shown, a first clearance opening 479 is provided on the front side 472 and / or the rear side 473 of the upper windshield to avoid the spray nozzle and spray pipe, so that the upper windshield 470 cannot affect the transmission of the third output shaft 230 and the oil supply of the gear meshing. Whether the first clearance opening is located on the front side, rear side, or both sides of the upper windshield is related to the structure of the spray nozzle and spray pipe at that location. Optionally, such as... Figures 3-6 A first clearance opening 479 is provided on both the front side 472 and the rear side 473 of the upper windshield.
[0027] like Figures 7-10 As shown, the middle baffle 460 is mainly used to control the splashing of lubricating oil during input gear meshing. The middle baffle 460 also includes a middle baffle apex plate 461, a middle baffle front panel 462 and a middle baffle rear panel 463 connected to the two arc edges of the middle baffle apex plate 461. The width of the middle baffle apex plate 461 is the width between the middle baffle front panel 462 and the middle baffle rear panel 463. The width of the middle baffle apex plate 461 is related to the width of the first output gear, the second output gear and the input gear, so that the middle baffle 460 does not interfere with the gear transmission of the above gears, and can control the splashing of lubricating oil during gear meshing.
[0028] like Figures 7-10 As shown, the top surface of the middle wind deflector 460 is provided with a second observation hole 467 for observing the meshing of the input gear and the first output gear and a third observation hole 468 for observing the meshing of the input gear and the second output gear near both ends.
[0029] like Figures 7-10 As shown, the front and / or rear sides of the center wind deflector 460 are provided with lugs for detachable connection with the center splitter face 340. Optionally, the front side of the center wind deflector 462 is provided with a fifth lug 469 and a sixth lug 4610, and the rear side of the center wind deflector 463 is provided with a seventh lug 4611 and an eighth lug 4612.
[0030] like Figures 7-10 As shown, the middle baffle plate 460 is used to control the splashing of lubricating oil during input gear meshing. Due to the large size of the input gear, the middle baffle plate 460 is also large. To better secure the middle baffle plate 460 to the gearbox and avoid interference with gear transmission, preferably, a lug is provided on the arc-shaped top surface of the middle baffle plate 460, connecting to the side wall of the middle gearbox 320 near the opening end of the upper gearbox 330. This lug is located on the arc-shaped top plate 461 of the middle baffle plate, with one end fixed to the arc-shaped top surface of the middle baffle plate 460 and the other end fixed to the gearbox. Optionally, a ninth lug 4613 and a tenth lug 4614 are provided on the arc-shaped top surface of the middle baffle plate 460. The ninth lug 4613 and the tenth lug 4614 are connected to the inner side wall of the gearbox adjacent to the upper gearbox surface 350.
[0031] like Figures 7-10 As shown, the lower side of the middle wind deflector 460 is open. The middle wind deflector top plate 461, the middle wind deflector front side plate 462, and the middle wind deflector rear side plate 463 surround a space for placing gears. After the lugs on the middle wind deflector 460 are connected to the middle split box surface 340, the upper part of the input gear is blocked by the middle wind deflector 460.
[0032] like Figures 7-10 As shown, the upper part of the middle windshield 460 is provided with a second clearance port 4615 for avoiding the meshing transmission of the third output shaft 230, and the lower part of the middle windshield 460 is provided with a third clearance port 4616 for avoiding the input gear. The second clearance port and the third clearance port penetrate through the front side plate and the rear side plate of the middle windshield.
[0033] like Figures 7-10As shown, the central baffle plate 460 has a first auxiliary baffle plate 440 at both ends to prevent lubricating oil from splashing at the first output shaft 210 gear and a second auxiliary baffle plate 450 to prevent lubricating oil from splashing at the second output shaft 220 gear. The first auxiliary baffle plate 440 includes a first auxiliary baffle plate arc top surface 441, a first auxiliary baffle plate front side plate 442, and a first auxiliary baffle plate rear side plate 443. The first auxiliary baffle plate arc top surface 441 is provided with a fourth observation hole 444 for observing gear meshing. One end of the first auxiliary baffle plate is smoothly connected to one end of the central baffle plate 460 to avoid meshing transmission between the input gear and the first output gear. The other end of the first auxiliary baffle plate is provided with an eleventh lug 445 and a twelfth lug 446 that are detachably connected to the side wall of the central split box. The front side plate 442 and the rear side plate 443 of the first auxiliary baffle plate are provided with a fourth clearance opening 447 for avoiding the second output shaft.
[0034] like Figures 7-10 As shown, the second auxiliary wind deflector 450 includes a second auxiliary wind deflector arc top surface 451, a second auxiliary wind deflector front side plate 452, and a second auxiliary wind deflector rear side plate 453. A fifth observation hole 454 for observing gear meshing is provided on the second auxiliary wind deflector arc top surface 451. One end of the second auxiliary wind deflector 450 is smoothly connected to the other end of the middle wind deflector 460 to avoid meshing transmission between the input gear and the second output gear. The other end of the second auxiliary wind deflector is provided with a thirteenth lug 455 and a fourteenth lug 456 that are detachably connected to the side wall of the split box. The front side plate 452 and the rear side plate 453 of the second auxiliary wind deflector are provided with a fifth clearance opening 457 for avoiding the second output shaft.
[0035] Optionally, the first auxiliary wind deflector 440, the second auxiliary wind deflector 450 and the middle wind deflector 460 are integrally formed. Optionally, the side panels of the first auxiliary wind deflector, the side panels of the second auxiliary wind deflector and the side panels of the middle wind deflector are integrally formed using sheet metal technology.
[0036] like Figures 11-14 As shown, the lower baffle 410 is used to control the splashing of lubricating oil at the input gear. The lower baffle 410 includes a front baffle 411 and a rear baffle 412. The front and rear baffles form an opening at the top, and the lower half of the input gear is blocked by the lower baffle 410.
[0037] like Figures 11-14 As shown, the front side plate 411 of the lower wind deflector is provided with a fifteenth lug 413 and a sixteenth lug 414 for detachable connection with the center partition surface 340, and the rear side plate 412 of the lower wind deflector is provided with a seventeenth lug 415 and an eighteenth lug 146 for detachable connection with the front of the center partition surface 340.
[0038] like Figures 11-14As shown, the lower baffle plate 410 is also provided with a third auxiliary baffle plate 420 for preventing lubricating oil splashing at the first output shaft 210 and a fourth auxiliary baffle plate 430 for preventing lubricating oil splashing at the second output shaft 220.
[0039] like Figures 11-14 As shown, the third auxiliary wind deflector 420 includes a front side plate 421 and a rear side plate 422. An arc-shaped bottom plate 423 is provided between the front and rear side plates 421 and 422. A sixth clearance opening 424 is provided on the arc-shaped bottom plate 423 to avoid the fuel injector pipe. One end of the third auxiliary wind deflector 420 is smoothly connected to the lower wind deflector 410, and the other end of the third auxiliary wind deflector 420 is provided with a nineteenth lug 425 and a twentieth lug 426 for fixing to the side surface 340 of the center splitter.
[0040] like Figures 11-14 As shown, optionally, since the rigidity of the remaining structure may be weakened after the sixth clearance opening 424 is removed from the arc bottom plate 423 of the third auxiliary wind deflector 420, a first reinforcing rib 427 is provided between the side of the arc bottom plate 423 away from the gear and the nineteenth lug 425, and a second reinforcing rib 428 is provided between the side of the arc bottom plate 423 away from the gear and the twentieth lug 426.
[0041] like Figures 11-14 As shown, the fourth auxiliary wind deflector 430 is used to avoid the meshing transmission between the input gear and the second output gear. The fourth auxiliary wind deflector 430 has a front side plate 431 and a rear side plate 432, and an arc-shaped bottom plate 433 located between the front side plate 431 and the rear side plate 432. A seventh avoidance port 434 is provided on the arc-shaped bottom plate 433 to avoid the fuel injector pipe.
[0042] like Figures 11-14 As shown, one end of the fourth auxiliary wind deflector 430 is smoothly connected to the lower wind deflector 410, and the other end of the fourth auxiliary wind deflector 430 is provided with a twenty-first lug 435 and a twenty-second lug 436 for fixing to the side 340 of the center split box surface. Optionally, a third reinforcing rib 437 is provided between the side of the arc bottom plate 433 away from the gear and the twenty-first lug 435, and a fourth reinforcing rib 438 is provided between the side of the arc bottom plate 433 away from the gear and the twenty-second lug 423.
[0043] like Figure 6 and Figure 12 As shown, optionally, the third auxiliary wind deflector 420 and the first auxiliary wind deflector 440 are mirror-symmetrical with respect to the center split box surface 340, and the fourth auxiliary wind deflector 430 and the second auxiliary wind deflector 450 are mirror-symmetrical with respect to the center split box surface 340.
[0044] like Figures 11-14 As shown, the lower baffle plate 410 is also provided with a first oil guide channel 417 communicating with the opening. The first oil guide channel 417 extends diagonally downward from below the third auxiliary baffle plate 430 to a position close to the bottom surface of the gearbox. There is still a distance in the height direction between the first oil guide channel and the bottom wall of the gearbox. The lubricating oil blocked by the upper baffle plate 470 and the middle baffle plate 460 flows into the lower baffle plate 410 under the action of gravity, and then flows from the first oil guide channel 417 of the lower baffle plate 410 to the bottom of the gearbox.
[0045] like Figures 11-14 As shown, the lower baffle plate 410 is also provided with a lower baffle plate arc bottom plate 418. The arc bottom plate 418 matches the shape of the lower half of the tooth tip circle of the input gear, and the lower baffle plate arc bottom plate 418 is spaced apart from the tooth tip circle of the lower half of the input gear by a certain distance. The distance between the bottom of the lower baffle plate arc bottom plate 418 and the bottom surface of the gearbox is greater than the distance between the first oil guide channel 417 and the bottom surface of the gearbox, that is, the bottom of the lower baffle plate arc bottom plate 418 is higher than the bottom of the first oil guide channel 417.
[0046] Optionally, the first oil guide channel 417 and the lower baffle arc bottom plate 418 are located on the left and right sides of the lower baffle 410, respectively. Figures 11-14 In the middle, the first oil guide channel 417 is located on the left side of the lower wind deflector 410, and the lower wind deflector arc bottom plate is located on the right side of the lower wind deflector 410.
[0047] like Figures 11-14 As shown, optionally, an oil drain hole 419 for oil leakage is provided on the bottom of the arc base plate.
[0048] In this embodiment, the gearbox has a baffle plate surrounding the gear housing cavity. The gearbox body includes an upper housing 330, a middle housing 320, and a lower housing 310. The baffle plate includes an upper baffle plate 470, a middle baffle plate 460, and a lower baffle plate 410. There are gaps between the baffle plate and the top and side walls of the gear to avoid interfering with gear transmission. A baffle plate is provided inside the housing, including an upper baffle plate, a middle baffle plate, and a lower baffle plate. The upper baffle plate is detachably connected to the upper split surface, and the middle and lower baffle plates are detachably connected to the middle split surface.
[0049] Preferably, the top surface, front panel, and rear panel of the upper wind deflector 470 are all located within the upper housing 330. The first, second, third, and fourth lugs used to fix the upper wind deflector 470 are detachably connected to the upper partition surface 350 of the middle housing. The top surface, front panel, and rear panel of the middle wind deflector 460 are all located within the middle housing 320. The first and second auxiliary wind deflectors connected to the middle wind deflector 460 are also located within the middle housing 320. The fifth, sixth, seventh, and eighth lugs used to fix the middle wind deflector 460, the eleventh and twelfth lugs used to fix the first and second auxiliary wind deflectors are detachably connected to the middle partition surface 340 of the middle housing. The ninth lug 4613 and the tenth lug 4614 on the middle wind deflector are detachably connected to the inner side wall of the middle housing, which is adjacent to the upper partition surface 350. The lower wind deflector 410, the third auxiliary wind deflector, and the fourth auxiliary wind deflector are all located inside the lower housing 310, and the fourteenth to twenty-second lugs are detachably connected to the middle partition surface 340 of the lower housing.
[0050] Existing gearbox wind deflectors are typically flat or bent plates located inside the gearbox. For high-speed gears, these existing deflectors cannot completely cut off the airflow generated inside the gearbox during gear rotation, thus failing to completely prevent insufficient lubrication of the gear surface and resulting in unsatisfactory wind deflection. The anti-blocking plate in this embodiment is a cover-like structure that covers the gears, cutting off the strong airflow generated when the high-speed gears rotate. It controls the lubricating oil splashing area during gear meshing within the wind deflector and guides it to the bottom of the gearbox, providing excellent wind and oil blocking effects.
[0051] Furthermore, as gearbox speeds increase, the number and placement of existing wind deflectors need to be increased to achieve the desired wind-blocking effect. Since wind deflectors are typically located outside the gears, they usually need to be removed before disassembling internal gearbox components. Given the limited space inside the gearbox, this process is extremely time-consuming. These problems are particularly pronounced if the high-speed gearbox is in its early stages of development, before the product is fully finalized, and when frequent on-site disassembly is required due to unpredictable circumstances.
[0052] In this embodiment, all the connecting surfaces of the lugs used to fix the wind baffle to the gearbox are on the gearbox's dividing surface. This provides ample wrench space during disassembly, reducing the difficulty of wind baffle assembly and disassembly. It is understandable that when the gear size is small, the number of lugs on the wind baffle can be reduced, further improving the efficiency of wind baffle assembly and disassembly. Even when the gear size increases, and the number and density of lugs on the wind baffle need to be increased accordingly, the large wrench space at the detachable connection points between the lugs and the gearbox ensures that wind baffle assembly and disassembly remain simple.
[0053] Furthermore, since the third output shaft 230 is located at the top of the gearbox, and the temperature of the lubricating oil used up in the bearings is usually higher than that of the lubricating oil used up in the gears, the high-temperature lubricating oil used up in the bearings on the third output shaft 230 can easily splash into the gear meshing area of the third output shaft 230, making the gear meshing prone to galling problems. Moreover, the hot oil from the bearings participating in the gear agitation will result in significant power loss. Therefore, in this embodiment, a second oil guide channel 480 is also provided on the baffle plate inside the gearbox. The second oil guide channel 480 is located on the side wall of the baffle plate and is isolated from the gear receiving cavity inside the baffle plate.
[0054] like Figures 7-10 As shown, the second oil guide channel 480 includes an upper annular channel 481 located on one side of the middle baffle plate 460 and a lower annular channel 482 located on the same side of the lower baffle plate 410. The upper annular channel 481 includes a straight section 4811, a left upper arcuate section 4812, and a right upper arcuate section 4813. The upper opening of the straight section 4811 is located below the bearing of the third output shaft 230, with a gap between it and the bearing to avoid interference with the bearing. Optionally, the upper opening of the straight section 4811 matches the lower semicircular shape of the bearing. The lower opening of the straight section 4811 connects to the upper opening of the left upper arcuate section 4812 and to the upper opening of the right upper arcuate section 4813. The lower opening of the straight section 4811 of the upper annular channel, together with the upper opening of the upper left arc-shaped section 4812 and the upper opening of the upper right arc-shaped section 4813, forms a three-way intersection shape. The space enclosed by the upper left arc-shaped section 4812 and the upper right arc-shaped section 4813 is the position of the input shaft 100. The upper left arc-shaped section 4812 and the upper right arc-shaped section 4813 deflect the flow of hot oil in the straight section 4811 of the upper annular channel away from the input shaft to avoid affecting the transmission of the input shaft. The bearing lubricating oil of the third output shaft 230 flows into the upper opening of the straight section of the upper annular channel under the action of gravity, and then enters the flow channels of the arc-shaped sections on both sides after passing through the straight section of the upper annular channel.
[0055] like Figures 11-14As shown, the lower annular channel 482 located in the lower baffle 410 includes a lower left arc segment 4821, a lower right arc segment 4822, and a lower straight segment 4823. The upper openings of the lower left arc segment 4821 and the lower right arc segment 4822 are used to receive lubricating oil from the outlets of the upper left arc segment 4812 and the upper right arc segment 4813 of the upper annular channel. The lower openings of the lower left arc segment 4821 and the lower right arc segment 4822 are connected to the lower straight segment 4823 of the lower annular channel of the lower baffle 410, leading the oil to the bottom of the gearbox.
[0056] Optionally, such as Figure 15 As shown, the projection of the lower opening of the upper left arc segment 4812 of the upper annular channel is completely located within the area of the upper opening of the lower left arc segment 4821 of the lower annular channel, and the projection of the lower opening of the upper right arc segment 4813 of the upper annular channel is completely located within the area of the upper opening of the lower right arc segment 4822 of the lower annular channel, so that the lubricating oil of the upper annular channel can flow into the interior of the upper annular channel.
[0057] Optionally, the straight section 4823 of the lower annular channel is located below the input gear shaft and is also used to guide the hot bearing oil of the input shaft 100 to the bottom of the gearbox. The lower openings of the lower left and lower right arc sections of the lower annular channel are connected to the middle of the straight section of the lower annular channel from the left and right sides, respectively. Optionally, the straight section of the lower annular channel has the largest flow area, so that the hot bearing oil of the input shaft 100 and the hot bearing oil of the third output shaft 230 can be smoothly guided to the bottom of the gearbox after they flow into the straight section of the lower annular channel.
[0058] Optionally, the cross-section of the second oil guide channel is rectangular, that is, the cross-sections of both the upper annular channel and the lower annular channel are rectangular, which reduces the thickness of the gear.
[0059] like Figure 9 and Figure 13 Optionally, a third oil guide channel is also provided on the wind deflector. The third oil guide channel includes an upper annular channel 491 of the third oil guide channel located on one side of the middle wind deflector and a lower annular channel 492 of the upper annular channel of the third oil guide channel located on the same side of the lower wind deflector. The structure of the third oil guide channel is the same as that of the second oil channel.
[0060] The second and / or third oil guide channels are used to guide the oil in the top high-speed shaft bearing to the bottom of the gearbox, allowing the hot oil from the bearings after use to be guided to the bottom of the gearbox through the second and / or third oil guide channels. Therefore, in this embodiment of the gearbox, the hot oil used by the gears is transported within the baffle plate cavity, while the lubricating oil used by the bearings on the same shaft is guided to the bottom of the gearbox through the second and / or third oil guide channels outside the baffle plate. This prevents the hot lubricating oil from participating in gear meshing, reducing power consumption loss.
[0061] In this embodiment, when installing the wind deflector inside the gearbox, first lower wind deflector 410 is lowered into the lower housing 310, and the lugs of the wind deflector are fixed at the center split surface 340. Then, the input shaft 100 assembly, the first output shaft 210 assembly, and the second output shaft 220 assembly are installed. The middle wind deflector 460 is then installed. The lugs of the middle wind deflector 460 can be fixed to the lugs of the lower wind deflector 410 at the same screw hole, or they can be separately fixed to the lugs of the lower wind deflector 410 on the center split surface 340. The two lugs on the arc-shaped top surface of the middle wind deflector 460 are fixed to the side wall of the middle housing 320 near the opening of the upper housing 330. Then, the third output shaft 230 assembly is installed. The upper wind deflector 470 is installed, and the lugs of the upper wind deflector 470 are fixed to the upper split surface 350. Finally, the upper housing 330 is installed, and the gearbox installation is complete.
[0062] The above embodiment uses a three-layer gearbox as an example for illustration. In practice, any gearbox containing gears can utilize the wind deflector of this embodiment. It simply requires a wind deflector between the gearbox and the gears to prevent lubricating oil from splashing onto the gears. The wind deflector is detachably connected to the gearbox via lugs at the split surface. Optionally, to further improve the wind deflection effect, the wind deflector can be positioned over the outside of the gears, with a clearance between it and the gears that does not interfere with their rotation. Therefore, the gearbox is not limited to a three-layer gearbox.
[0063] When the gearbox is a two-layer gearbox, the gearbox includes an upper housing and a lower housing, and the wind deflector includes an upper wind deflector and a lower wind deflector. The upper wind deflector is located in the upper housing, and the lower wind deflector is located in the lower housing. The lugs of the lower wind deflector are detachably connected to the dividing surface of the lower housing, and the lugs of the upper wind deflector are detachably connected to the dividing surface. Optionally, the lugs of the upper wind deflector are detachably connected to the dividing surface of the upper housing, or the lugs of the upper wind deflector are detachably connected to the dividing surface of the lower housing.
[0064] The baffle plate in the gearbox of this embodiment can be used in high-speed gearboxes, such as compressor gearboxes. Those skilled in the art will readily conclude that the baffle plate provided in this embodiment can also be used in low-speed gearboxes.
[0065] 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 an integral part; 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.
[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0067] 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 gearbox, characterized in that, It includes a housing, inside which gears are installed, and between the housing and the gears is a baffle plate to prevent lubricating oil from splashing from the gears. The baffle plate is detachably connected to the housing at the split surface via lugs.
2. The gearbox according to claim 1, characterized in that, The wind deflector is placed on the outside of the gear and there is a gap between it and the gear so as not to interfere with the rotation of the gear.
3. The gearbox according to claim 1, characterized in that, The gearbox includes an upper housing and a lower housing. The wind deflector includes an upper wind deflector and a lower wind deflector. The upper wind deflector is located inside the upper housing, and its lugs are detachably connected to the dividing surface. The lower wind deflector is located inside the lower housing, and its lugs are detachably connected to the dividing surface.
4. The gearbox according to claim 1, characterized in that, The box body includes an upper box body, a middle box body, and a lower box body. The dividing surface between the upper box body and the middle box body is called the upper dividing surface, and the dividing surface between the middle box body and the lower box body is called the middle dividing surface. The wind deflector includes an upper wind deflector, a middle wind deflector, and a lower wind deflector. The upper wind deflector is located inside the upper housing, the middle wind deflector is located inside the middle housing, and the lower wind deflector is located inside the lower housing. The upper wind deflector's lugs and the middle wind deflector's lugs are detachably connected to the upper compartment surface, and the middle wind deflector's lugs and the lower wind deflector's lugs are detachably connected to the middle compartment surface.
5. The gearbox according to claim 4, characterized in that, The gear includes an input gear, a first output gear meshing with the input gear, and a second output gear meshing with the input gear; the input gear, the first output gear, and the second output gear are all located at the center split surface; The two ends of the central wind deflector are provided with a first auxiliary wind deflector and a second auxiliary wind deflector. The first auxiliary wind deflector is used to block the splashing of lubricating oil at the first output shaft gear located in the central housing, and the second auxiliary wind deflector is used to block the splashing of lubricating oil at the second output shaft gear located in the central housing. One end of the first auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a support lug for detachable connection with the center panel; one end of the second auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a support lug for detachable connection with the center panel.
6. The gearbox according to claim 5, characterized in that, The lower baffle plate is provided with a third auxiliary baffle plate and a fourth auxiliary baffle plate at both ends. The third auxiliary baffle plate is used to block the splashing of lubricating oil at the first output shaft gear located in the lower housing, and the fourth auxiliary baffle plate is used to block the splashing of lubricating oil at the second output shaft gear located in the lower housing. One end of the third auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a support lug for detachable connection with the center panel; one end of the fourth auxiliary wind deflector is connected to the middle wind deflector, and the other end is provided with a support lug for detachable connection with the center panel.
7. The gearbox according to claim 3 or claim 4, characterized in that, The upper part of the lower wind deflector is open, and the lower wind deflector is also provided with a first oil guide channel communicating with the open. The lubricating oil blocked by the wind deflector enters the first oil guide channel and is guided to the inner bottom surface of the gearbox through the first oil guide channel.
8. The gearbox according to claim 1, characterized in that, It also includes a shaft for supporting the gear, with bearings at both ends of the shaft; A second oil guide channel is also provided on the front side of the wind deflector. The upper opening of the second oil guide channel is located at the lower part of the bearing and is spaced apart from the bearing at one end. The lower opening of the second oil guide channel is located near the inner bottom surface of the gearbox. The second oil guide channel is used to guide the lubricating oil used up by the bearing to the inner bottom surface of the gearbox.
9. The gearbox according to claim 8, characterized in that, The wind deflector includes an upper wind deflector, a middle wind deflector, and a lower wind deflector. The second oil guide channel includes an upper annular channel located on one side of the middle wind deflector and a lower annular channel located on the same side of the lower wind deflector. The second oil guide channel is isolated from the gear receiving cavity inside the wind deflector and is used to guide the lubricating oil that has been used up in the bearing.
10. The gearbox according to claim 8, characterized in that, A third oil guide, symmetrically arranged with the second oil guide channel, is provided on the rear side of the wind deflector to guide the lubricating oil that has been used up in the bearing.