Marine speed reducer gear structure

Abstract

The utility model relates to the technical field of ship engineering, and discloses a marine reducer gear structure which comprises a reduction gearbox, the surface of the reduction gearbox is rotationally connected with an input shaft, the outer surface of the input shaft is fixedly connected with a driving gear, and the outer surface of the driving gear is connected with a driven gear in a meshed mode. By arranging the driving gear, the driven gear, the driving gear and the driven gear which are designed in a tooth number difference mode, the speed reducing and torque increasing effects are achieved, the transmission efficiency is effectively improved, when an oil pump sprays lubricating oil to a gear bearing, the dripping lubricating oil can be filtered through a precise filter screen, particulate matter and impurities in the lubricating oil are blocked, and therefore the lubricating oil is prevented from falling off. And the purified lubricating oil flows to the bottom of the oil tank under the action of gravity, the oil pump pumps out the lubricating oil again, and the lubricating oil is sprayed to the gear bearing again through the oil conveying pipe and the nozzle set, so that a closed circulating system is formed, and resource waste and environmental pollution are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ship engineering, in particular to a gear structure of a ship reducer. Background Art

[0002] In the marine industry, the reducer is a key component in the ship's propulsion system. It is responsible for converting the high speed generated by the engine into a low speed, high torque output to drive the propeller. This conversion process is crucial to the power transmission and efficiency of the ship.

[0003] However, the gear structure of the traditional reducer, due to the direct hard contact between the gears, will cause gear wear to increase over time, resulting in reduced transmission efficiency. At the same time, the gears will also generate a lot of heat when running at high speed. If the lubrication is insufficient or the cooling efficiency is low, it will cause the gears to overheat, accelerate material aging and wear, and affect the service life. In addition, the existing lubrication system usually requires a large amount of lubricating oil during the lubrication process, and the lubricating oil is easy to lose during use. If it is not collected and recycled, it will cause waste of resources and environmental pollution. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a marine reducer gear structure.

[0005] The utility model is implemented by the following technical scheme: a marine reducer gear structure, comprising a reduction box, the surface of which is rotatably connected to an input shaft, the outer surface of which is fixedly connected to a driving gear, the outer surface of which is meshingly connected to a driven gear, and the surface of which is fixedly connected to an output shaft.

[0006] Through the above technical solution, the driving gear and the driven gear transmit power through the meshing of the tooth surfaces. Since the driving gear has fewer teeth, when it drives the driven gear with more teeth, the rotation speed of the driven gear will decrease.

[0007] As a further improvement of the above solution, the other ends of the input shaft and the output shaft are fixedly connected to auxiliary bearings, and the auxiliary bearings are fixedly connected to the inner wall of the reduction box.

[0008] Through the above technical solution, the auxiliary bearing can provide additional support and stability, ensure the smoothness and precision of the input shaft and output shaft during rotation, and reduce vibration and noise.

[0009] As a further improvement of the above solution, a sealing cover is provided on the upper surface of the reduction box, and an oil tank is fixedly connected to the lower surface of the reduction box.

[0010] Through the above technical solution, the sealing cover can prevent dust, moisture and other impurities from entering the interior of the reduction gearbox, protect key components such as gears and bearings from contamination, and extend their service life.

[0011] As a further improvement of the above solution, a liquid level observation window is provided at the front end of the fuel tank, and an oil pump is fixedly mounted on the inner bottom wall of the fuel tank by bolts.

[0012] Through the above technical solution, the liquid level observation window enables the operator to observe the oil level in the oil tank at any time to ensure sufficient lubricating oil and avoid equipment damage due to lack of oil. The oil pump can automatically extract the lubricating oil from the oil tank and deliver it to various lubrication points in the reduction box to achieve automatic lubrication, reducing the frequency of manual intervention and maintenance workload.

[0013] As a further improvement of the above solution, the output end of the oil pump is fixedly connected to an oil delivery pipe, and the outer surface of the oil delivery pipe is fixedly connected to a nozzle group.

[0014] With the above technical solution, lubricating oil can be accurately delivered to the gear surface inside the reduction box through the oil delivery pipe and the nozzle group, ensuring that the gear can be fully lubricated and cooled.

[0015] As a further improvement of the above solution, a pipeline holder is sleeved on the outer surface of the oil delivery pipe.

[0016] As a further improvement of the above solution, a precision filter screen is provided on the upper surface of the fuel tank, and support corner pads are fixedly connected to the four corners of the lower surface of the fuel tank.

[0017] Through the above technical scheme, through the combined use of precision filters and oil tanks, the recycling of lubricating oil can be achieved, the consumption and waste of lubricating oil can be reduced, the operating costs can be reduced, the recycling of lubricating oil can reduce the discharge of waste oil, and the pollution to the environment can be reduced, which meets the requirements of environmental protection. The precision filters can remove impurities in the lubricating oil and ensure the purity of the lubricating oil, thereby improving the overall performance and reliability of the lubrication system.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model realizes the effect of speed reduction and torque increase by arranging master and slave wheels, and adopts driving gear and driven gear with difference in tooth number, thereby effectively improving transmission efficiency. Moreover, when the oil pump sprays lubricating oil on the gear bearing, the dripping lubricating oil can be filtered through a precision filter screen to block particulate matter and impurities in the lubricating oil, thereby reducing wear and malfunction inside the equipment. The purified lubricating oil flows to the bottom of the oil tank by gravity, and the oil pump draws out the lubricating oil again, and sprays it onto the gear bearing again through the oil delivery pipe and the nozzle group, thereby forming a closed circulation system, thereby reducing resource waste and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the output shaft of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the driving gear of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the nozzle assembly of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the precision filter screen of the utility model.

[0025] Description of main symbols:

[0026] 1. Reducer; 2. Input shaft; 3. Driving gear; 4. Driven gear; 5. Output shaft; 6. Auxiliary bearing; 7. Sealing cover; 8. Oil tank; 9. Liquid level observation window; 10. Oil pump; 11. Oil delivery pipe; 12. Nozzle group; 13. Pipe holder; 14. Precision filter; 15. Support angle pad. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0028] Example:

[0029] Please combine Figure 1-5A marine reducer gear structure of the present embodiment includes a reduction box 1, the surface of the reduction box 1 is rotatably connected with an input shaft 2, the outer surface of the input shaft 2 is fixedly connected with a driving gear 3, the outer surface of the driving gear 3 is meshingly connected with a driven gear 4, the surface of the driven gear 4 is fixedly connected with an output shaft 5, the input shaft 2 drives the driving gear 3 fixed on its outer surface to rotate, the driving gear 3 and the driven gear 4 transmit power through the meshing action of the tooth surfaces, since the driving gear 3 has a small number of teeth and the driven gear 4 has a large number of teeth, this configuration will cause the speed of the driven gear 4 to be lower than the driving gear 3, in the process of gear meshing, the torque is transmitted from the driving gear 3 to the driven gear 4, since the driven gear 4 has a larger number of teeth, its torque increases accordingly, and the driven gear 4 transmits the reduced speed and increased torque through the output shaft 5 fixed on its surface, thereby achieving the effect of reducing speed and increasing torque.

[0030] The other ends of the input shaft 2 and the output shaft 5 are fixedly connected with auxiliary bearings 6, and the auxiliary bearings 6 are fixedly connected to the inner wall of the reduction box 1. The auxiliary bearings 6 can reduce the friction between the shaft and the inner wall of the reduction box 1, thereby reducing energy loss and improving transmission efficiency.

[0031] A sealing cover 7 is provided on the upper surface of the reduction box 1, and an oil tank 8 is fixedly connected to the lower surface of the reduction box 1. The oil tank 8 is used to store lubricating oil. Through the circulation of the lubricating oil, the various moving parts in the reduction box 1 can be effectively lubricated, and the heat can be taken away to prevent overheating, thereby improving work efficiency and reliability.

[0032] A liquid level observation window 9 is provided at the front end of the oil tank 8, and an oil pump 10 is fixedly installed on the inner bottom wall of the oil tank 8 by bolts. The liquid level observation window 9 is usually a transparent window installed at the front end of the oil tank 8. Through this window, the operator can directly see the oil level in the oil tank 8. When the oil level is lower than the minimum mark, the operator is prompted to add lubricating oil.

[0033] The output end of the oil pump 10 is fixedly connected to an oil delivery pipe 11, and the outer surface of the oil delivery pipe 11 is fixedly connected to a nozzle group 12. The oil pump 10 extracts the lubricating oil from the oil tank 8 and delivers it to the nozzle group 12 through the oil delivery pipe 11. The pressure provided by the oil pump 10 ensures that the lubricating oil can smoothly pass through the oil delivery pipe 11 and reach the designated position. The nozzle group 12 is composed of a plurality of nozzles. The lubricating oil is sprayed through the nozzles at a certain pressure and flow rate, and is directly sprayed onto the gears, bearings and other parts that need lubrication. The sprayed lubricating oil forms an oil film on the surface of the gears and bearings to reduce friction and wear, while absorbing heat and taking away the heat generated by friction to prevent the equipment from overheating.

[0034] The outer surface of the oil delivery pipe 11 is sleeved with a pipe holder 13 .

[0035] The upper surface of the oil tank 8 is provided with a precision filter screen 14, and the four corners of the lower surface of the oil tank 8 are fixedly connected with supporting corner pads 15. When the gear bearings are sprayed with lubricating oil, the excess lubricating oil or dripping lubricating oil will flow to the bottom of the oil tank 8 by gravity. Before the lubricating oil flows into the oil tank 8, it is first filtered by the precision filter screen 14. The precision filter screen 14 has fine pores, which can block the particles and impurities in the lubricating oil and only allow pure lubricating oil to flow into the oil tank 8. This can ensure the quality of the lubricating oil and reduce the wear and failure inside the equipment. The lubricating oil purified by the precision filter screen 14 will accumulate at the bottom of the oil tank 8, and the oil pump 10 will extract the lubricating oil again and spray it onto the gear bearings through the oil delivery pipe 11 and the nozzle group 12 to form a closed circulation system. During the circulation of the lubricating oil, the precision filter screen 14 will continue to play a role, continuously removing impurities in the lubricating oil to ensure the purity and lubrication effect of the lubricating oil.

[0036] The implementation principle of a marine reducer gear structure in the embodiment of the present application is as follows: when the power source drives the input shaft 2 to rotate, the driving gear 3 fixed on the outer surface of the input shaft 2 rotates accordingly, and the driving gear 3 and the driven gear 4 transmit power through the meshing action of the tooth surfaces. Since the driving gear 3 has a small number of teeth and the driven gear 4 has a large number of teeth, the speed of the driven gear 4 is lower than that of the driving gear 3, because each tooth needs to cover more angles to complete one rotation, thereby achieving a deceleration effect, and an oil tank 8 is provided to store lubricating oil. The oil pump 10 delivers the lubricating oil to the nozzle group 12 through the oil delivery pipe 11. The nozzle group 12 sprays the lubricating oil at a certain pressure onto the gears, bearings and other parts that need lubrication to form an oil film to reduce friction and wear. The excess lubricating oil flows back to the oil tank 8 by gravity. The precision filter 14 is located on the top of the oil tank 8 to filter the returned lubricating oil to remove particles and impurities therein to ensure the purity of the lubricating oil. The purified lubricating oil is pumped out again by the oil pump 10 to form a closed circulation system to ensure that the wear and failure inside the equipment are minimized.

[0037] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A marine reducer gear structure, characterized in that: The invention comprises a reduction box (1), wherein the surface of the reduction box (1) is rotatably connected to an input shaft (2), the outer surface of the input shaft (2) is fixedly connected to a driving gear (3), the outer surface of the driving gear (3) is meshingly connected to a driven gear (4), and the surface of the driven gear (4) is fixedly connected to an output shaft (5); a sealing cover (7) is provided on the upper surface of the reduction box (1), and an oil tank (8) is fixedly connected to the lower surface of the reduction box (1); a liquid level observation window (9) is provided at the front end of the oil tank (8), and an oil pump (10) is fixedly installed on the inner bottom wall of the oil tank (8) by means of bolts; an oil delivery pipe (11) is fixedly connected to the output end of the oil pump (10), and a nozzle group (12) is fixedly connected to the outer surface of the oil delivery pipe (11); a precision filter screen (14) is provided on the upper surface of the oil tank (8), and support corner pads (15) are fixedly connected to the four corners of the lower surface of the oil tank (8).

2. A marine reducer gear structure according to claim 1, characterized in that: The other ends of the input shaft (2) and the output shaft (5) are both fixedly connected to auxiliary bearings (6), and the auxiliary bearings (6) are fixedly connected to the inner wall of the reduction box (1).

3. A marine reducer gear structure according to claim 1, characterized in that: The outer surface of the oil delivery pipe (11) is sleeved with a pipe holder (13).

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