Speed reducer for aerodynamic ship

Abstract

The utility model relates to the technical field of speed reducers, in particular to an aerodynamic marine speed reducer which comprises an engine, a driving wheel, a driven wheel and a belt, the driven wheel is mounted on a vertical plate through a driven shaft, a belt tightness adjusting mechanism is arranged between the vertical plate and the engine, and the belt tightness adjusting mechanism comprises a limiting plate, a locking bolt assembly and an adjusting screw. The locking bolt assembly penetrates through a long-strip-shaped groove hole formed in the vertical plate, and the adjusting screw rod is fixedly installed on the vertical plate and connected with the limiting plate through a nut. By arranging the adjusting screw rod and the nut, the moving distance of the vertical plate can be accurately controlled, then the tightness of the belt is accurately adjusted, and the strict requirements for the tightness of the belt under different working conditions are met; the structure is simple in design and easy to manufacture and maintain, and the production cost and the later maintenance difficulty of equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to an aerodynamic marine speed reducer. Background Technology

[0002] In modern power transmission systems, reduction gears are widely used as key components in various mechanical equipment, including air-powered ships. The reduction gear plays a crucial role in air-powered ships, converting the high-speed, low-torque power output from the engine into low-speed, high-torque power suitable for the propeller, thereby achieving efficient propulsion.

[0003] However, existing reduction mechanisms still have many shortcomings. In terms of belt tension adjustment, the belt tension adjustment accuracy is poor and the adjustment is relatively cumbersome, which cannot meet the stringent requirements of belt drive under different working conditions. When traveling at high speed or with changing loads, belt slippage or excessive tension is prone to occur, affecting power transmission efficiency and equipment lifespan. Furthermore, the neutral plate of the existing reduction mechanism is mostly fixedly connected to the engine. Once the driven pulley, driven shaft, or other components malfunction, maintenance personnel need to spend a lot of time disassembling and repairing, resulting in extremely low maintenance efficiency and significantly increasing maintenance costs and downtime. Summary of the Invention

[0004] To address the above problems, this application provides an aerodynamic marine gearbox, comprising an engine, a drive wheel, a driven wheel, and a belt. The output shaft of the engine is connected to the drive wheel, and the driven wheel is mounted on a vertical plate via a driven shaft. A belt tension adjustment mechanism is provided between the vertical plate and the engine. The belt tension adjustment mechanism includes: a limiting plate fixed to the engine housing; a locking bolt assembly disposed on the limiting plate and passing through an elongated slot in the vertical plate; and an adjusting screw fixedly mounted on the vertical plate and connected to the limiting plate via a nut.

[0005] In one embodiment, the elongated slot extends vertically, and the axis of the adjusting screw is aligned with the extension direction of the elongated slot.

[0006] In one embodiment, the drive wheel and the output shaft of the engine are circumferentially fixed by the drive wheel shaft key and axially locked by the drive shaft fixing sleeve and the drive shaft screw.

[0007] In one embodiment, a drive pulley retainer ring and a driven pulley retainer ring are respectively provided on both sides of the drive pulley and the driven pulley. The outer diameter of the drive pulley retainer ring and the driven pulley retainer ring is larger than the belt width to limit the axial displacement of the belt.

[0008] In one embodiment, a single-row tapered roller bearing is provided between the driven wheel and the driven shaft, and oil seals are provided on both sides of the single-row tapered roller bearing. The driven shaft is fixed to the vertical plate by a driven shaft fixing plate and fixing screws, and a driven shaft plug and a slotted nut are provided on the side away from the vertical plate.

[0009] In one embodiment, an annular reinforcing sleeve is provided on the side of the driven shaft near the vertical plate.

[0010] In one embodiment, a propeller assembly is connected to the end of the driven shaft. The propeller assembly includes a hub and propeller blades, and the hub is connected to the driven shaft.

[0011] The beneficial effects of this utility model are as follows:

[0012] This application discloses an aerodynamic marine gearbox, comprising an engine, a drive wheel, a driven wheel, and a belt. The driven wheel is mounted on a vertical plate via a driven shaft. A belt tension adjustment mechanism is provided between the vertical plate and the engine. The belt tension adjustment mechanism includes a limit plate, a locking bolt assembly, and an adjusting screw. The locking bolt assembly passes through an elongated slot in the vertical plate. The adjusting screw is fixedly mounted on the vertical plate and connected to the limit plate via a nut. By setting an adjusting screw and nut, the movement distance of the vertical plate can be precisely controlled, thereby accurately adjusting the belt tension to meet the stringent requirements for belt tension under different working conditions. The long slot and locking bolt assembly ensure both the mobility of the vertical plate during adjustment and reliable fixation after adjustment, preventing positional changes during operation and ensuring the stability of the belt drive. The vertical plate is detachable from the engine, allowing maintenance personnel to easily remove it for direct inspection, repair, or replacement of the driven pulley, driven shaft, and other related components, shortening maintenance time and improving efficiency. This simple design facilitates manufacturing and maintenance, reducing equipment production costs and simplifying subsequent maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0014] Figure 2 This is a front view of the present utility model;

[0015] Figure 3 for Figure 2 Sectional view of AA;

[0016] Figure 4 This is a schematic diagram of the structure after the engine has been removed.

[0017] Figure 5 This is a schematic diagram of the limiting plate structure;

[0018] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 7 This is a schematic diagram of the propeller assembly structure;

[0020] Explanation of symbols in the diagram:

[0021] 1. Engine;

[0022] 2. Drive wheel;

[0023] 21. Drive shaft retaining sleeve; 22. Drive shaft bolt; 23. Drive wheel retaining ring;

[0024] 3. Driven wheel; 31. Driven shaft; 32. Driven wheel retaining ring; 33. Single row tapered roller bearing; 34. Oil seal; 35. Driven shaft fixing plate; 36. Fixing screw; 37. Driven shaft plug; 38. Slotted nut; 39. Annular reinforcing sleeve;

[0025] 4. Erecting board;

[0026] 5. Belt tension adjustment mechanism; 51. Limiting plate; 52. Locking bolt assembly; 53. Long slot hole; 54. Adjusting screw;

[0027] 6. Propeller assembly; 61. Hub; 62. Propeller blades. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] like Figure 1-6 As shown, an aerodynamic marine gearbox includes an engine 1, a driving wheel 2, a driven wheel 3, and a belt. The output shaft of the engine 1 is connected to the driving wheel 2. The driven wheel 3 is mounted on a vertical plate 4 via a driven shaft 31. A belt tension adjustment mechanism 5 is provided between the vertical plate 4 and the engine 1. The belt tension adjustment mechanism 5 includes:

[0031] Limiting plate 51, the limiting plate 51 is fixed on the housing of engine 1;

[0032] Locking bolt assembly 52, which is disposed on the limiting plate 51 and passes through the elongated slot 53 opened on the upright plate 4;

[0033] An adjusting screw 54 is fixedly installed on the upright plate 4 and connected to the limiting plate 51 by a nut.

[0034] Specifically, the output shaft of engine 1 is connected to the drive wheel 2, providing power output for the entire mechanism. Driven wheel 3 is mounted on the vertical plate 4 via driven shaft 31, enabling power transmission and conversion. A belt tension adjustment mechanism 5 is provided between the vertical plate 4 and engine 1. A limiting plate 51 is fixed to the housing of engine 1, serving a positioning and support function. A locking bolt assembly 52 is mounted on the limiting plate 51 and passes through a pre-drilled elongated slot 53 on the vertical plate 4, used to lock the position of the vertical plate 4 after adjustment. The adjusting screw 54 is fixedly mounted on the vertical plate 4 and connected to the limiting plate 51 via a nut. When adjusting the belt tension, first loosen the locking bolt assembly 52 to release the lock on the vertical plate 4. Then, by turning the nut on the adjusting screw 54, the vertical plate 4 is driven to move up and down along the elongated slot 53. The movement of the vertical plate 4 changes the position of the driven wheel 3, thereby adjusting the belt tension. After adjustment, tighten the locking bolt assembly 52 again to fix the vertical plate 4 in the new position, ensuring that the belt is in the appropriate tension. In this application, by setting the adjusting screw 54 and nut, the movement distance of the vertical plate 4 can be precisely controlled, thereby accurately adjusting the belt tension to meet the strict requirements for belt tension under different working conditions; by setting the elongated slot hole 53 and the locking bolt assembly 52, the mobility of the vertical plate 4 during the adjustment process is ensured, and reliable fixation is provided after adjustment, preventing the position of the vertical plate 4 from changing during operation and ensuring the stability of the belt drive; the vertical plate 4 is detachable from the engine 1, allowing maintenance personnel to easily remove the vertical plate 4 from the engine 1 and directly inspect, repair, or replace the driven pulley 3, driven shaft 31, and other related components, shortening maintenance time and improving maintenance efficiency; the structure is simple in design, easy to manufacture and maintain, reducing the production cost of the equipment and the difficulty of later maintenance.

[0035] like Figure 2 , 3 As shown, the elongated slot 53 extends in a vertical direction, and the axis of the adjusting screw 54 is consistent with the extending direction of the elongated slot 53.

[0036] Specifically, by setting the elongated slot 53 to extend vertically and aligning it with the axis of the adjusting screw 54, the vertical plate 4 can be moved smoothly and precisely in the vertical direction, thereby accurately adjusting the belt tension.

[0037] like Figure 3 As shown, the drive wheel 2 and the output shaft of the engine 1 are circumferentially fixed by the drive wheel shaft key and axially locked by the drive shaft fixing sleeve 21 and the drive shaft screw 22.

[0038] Specifically, the drive wheel 2 is circumferentially fixed to the output shaft of the engine 1 by means of the drive wheel shaft key, and is axially locked by the drive shaft fixing sleeve 21 and the drive shaft screw 22 to ensure stable power transmission and a stable position of the drive wheel 2.

[0039] like Figure 3 , 6 As shown, a drive pulley retaining ring 23 and a driven pulley retaining ring 32 are respectively provided on both sides of the drive pulley 2 and the driven pulley 3. The outer diameter of the drive pulley retaining ring 23 and the driven pulley retaining ring 32 is larger than the belt width to limit the axial displacement of the belt.

[0040] Specifically, the drive pulley retainer ring 23 and the driven pulley retainer ring 32 can prevent the belt from shifting to both sides, so that the belt is always kept within the effective transmission area of ​​the drive pulley 2 and the driven pulley 3, avoiding transmission failure caused by belt misalignment, ensuring smooth power transmission, and maintaining the normal operation of the reduction mechanism.

[0041] like Figure 3 , 6 As shown, a single-row tapered roller bearing 33 is provided between the driven wheel 3 and the driven shaft 31. Oil seals 34 are provided on both sides of the single-row tapered roller bearing 33. The driven shaft 31 is fixed to the vertical plate 4 by the driven shaft fixing plate 35 and fixing screws 36. A driven shaft plug 37 and a slotted nut 38 are provided on the side away from the vertical plate 4.

[0042] Specifically, a single-row tapered roller bearing 33 is installed between the driven wheel 3 and the driven shaft 31, which can effectively withstand radial and axial combined loads, ensure smooth rotation of the driven wheel 3, reduce frictional resistance during operation, and improve transmission efficiency. Oil seals 34 are installed on both sides of the bearing for sealing, which can prevent the intrusion of external dust, moisture and other impurities, avoid damage to the bearing due to wear caused by impurities, and maintain a good lubrication environment. The driven shaft 31 is fixed to the vertical plate 4 by the driven shaft fixing plate 35 and fixing screws 36, which is stable and easy to disassemble and maintain, ensuring reliable positioning of the driven shaft 31. The driven shaft plug 37 can prevent foreign objects from entering the shaft end, and the slotted nut 38 can effectively lock the components on the shaft to prevent loosening, further ensuring the stability of the entire driven wheel assembly.

[0043] like Figure 6As shown, the driven shaft 31 is provided with an annular reinforcing sleeve 39 on the side near the vertical plate 4.

[0044] Specifically, the vertical plate 4 serves as a supporting structure, and the connection between the driven shaft 31 and the vertical plate 4 is a critical stress-bearing area, prone to stress concentration. The annular reinforcing sleeve 39 can disperse the stress at this location, reducing the risk of shaft deformation or even breakage due to stress concentration, ensuring that the driven shaft 31 stably transmits power to the driven wheel 3, and maintaining the normal operation of the reduction mechanism.

[0045] like Figure 6 , 7 As shown, a propeller assembly 6 is connected to the end of the driven shaft 31. The propeller assembly 6 includes a hub 61 and propeller blades 62. The hub 61 is connected to the driven shaft 31.

[0046] Specifically, the driven shaft 31 can be connected to the propeller hub 61 by a spline or flange to ensure that the power of the driven shaft 31 is transmitted to the propeller hub 61 efficiently and stably, thereby driving the propeller blades 62 to rotate and propel the aerodynamic ship forward.

[0047] This application discloses an aerodynamic marine gearbox, comprising an engine 1, a drive pulley 2, a driven pulley 3, and a belt. The driven pulley 3 is mounted on a vertical plate 4 via a driven shaft 31. A belt tension adjustment mechanism 5 is provided between the vertical plate 4 and the engine 1. The belt tension adjustment mechanism 5 includes a limiting plate 51 and a locking bolt assembly 52. ​​The locking bolt assembly 52 passes through an elongated slot 53 in the vertical plate 4. An adjusting screw 54 is fixedly mounted on the vertical plate 4 and connected to the limiting plate 51 via a nut. When it is necessary to adjust the belt tension, first loosen the locking bolt assembly 52 to release the lock on the vertical plate 4. At this time, by turning the nut on the adjusting screw 54, the vertical plate 4 is driven to move up and down along the elongated slot 53. The movement of the vertical plate 4 changes the position of the driven pulley 3, thereby adjusting the belt tension. After adjustment, tighten the locking bolt assembly 52 again to fix the vertical plate 4 in the new position, ensuring that the belt is in a suitable tension. In this application, by setting the adjusting screw 54 and nut, the movement distance of the vertical plate 4 can be precisely controlled, thereby accurately adjusting the belt tension to meet the strict requirements for belt tension under different working conditions. By setting the elongated slot hole 53 and the locking bolt assembly 52, the mobility of the vertical plate 4 during the adjustment process is ensured, and reliable fixation is provided after the adjustment is in place, preventing the position of the vertical plate 4 from changing during operation and ensuring the stability of the belt drive. The vertical plate 4 is detachable from the engine 1, allowing maintenance personnel to easily remove the vertical plate 4 from the engine 1 and directly inspect, repair, or replace the driven wheel 3, driven shaft 31, and other related components, shortening maintenance time and improving maintenance efficiency. This structural design is simple, easy to manufacture and maintain, and reduces the production cost of the equipment and the difficulty of later maintenance.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A speed reducer for air power ship, comprising an engine (1), a driving wheel (2), a driven wheel (3) and a belt, the output shaft of the engine (1) is connected with the driving wheel (2), the driven wheel (3) is installed on a vertical plate (4) through a driven shaft (31), a belt tightness adjusting mechanism (5) is arranged between the vertical plate (4) and the engine (1), characterized in that: The belt tightness adjusting mechanism (5) comprises: A limiting plate (51) fixed on the engine (1) shell; A locking bolt assembly (52) arranged on the limiting plate (51) and penetrating the long slot hole (53) formed on the vertical plate (4); An adjusting screw (54) fixedly installed on the vertical plate (4) and connected with the limiting plate (51) through a nut.

2. A marine air screw as claimed in claim 1, wherein The long slot hole (53) extends in the vertical direction, and the axis of the adjusting screw (54) is consistent with the extension direction of the long slot hole (53).

3. A marine reduction gear according to claim 1, characterized in that The driving wheel (2) is circumferentially fixed with the output shaft of the engine (1) through a driving wheel shaft key and axially locked through a driving shaft fixing sleeve (21) and a driving shaft screw (22).

4. The marine reduction gear of claim 1, wherein The driving wheel (2) and the driven wheel (3) are respectively provided with a driving wheel retainer ring (23) and a driven wheel retainer ring (32) on both sides, and the outer diameter of the driving wheel retainer ring (23) and the driven wheel retainer ring (32) is greater than the width of the belt to limit the axial displacement of the belt.

5. The marine reduction gear of claim 1, wherein A single-row tapered roller bearing (33) is arranged between the driven wheel (3) and the driven shaft (31), and oil seals (34) are arranged on both sides of the single-row tapered roller bearing (33) for sealing. The driven shaft (31) is fixed on the vertical plate (4) through a driven shaft fixing plate (35) and a fixing screw (36), and a driven shaft plug (37) and a slotted nut (38) are arranged on the side away from the vertical plate (4).

6. A marine reduction gear according to claim 5, characterised in that The driven shaft (31) is provided with an annular reinforcing sleeve (39) on the side close to the vertical plate (4).

7. A marine reduction gear according to claim 1, characterized in that A propeller assembly (6) is connected to the end of the driven shaft (31), and the propeller assembly (6) comprises a hub (61) and propeller blades (62), and the hub (61) is connected with the driven shaft (31).

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