CN110608280A - A device for preventing oil spillage in propeller gearbox - Google Patents

Abstract

The invention relates to a device for preventing oil spillage in a propeller transmission system. A lubricating oil vent is arranged on the cover plate of the gearbox of the propeller transmission system, and a cylinder is fixedly arranged on the upper part of the lubricating oil vent. The oil baffle plate covering the air vent is set aside, and a vent hole is arranged on the oil baffle plate; the upper part of the cylinder body is covered with a blocking cap, and a steel ball is arranged between the sealing cap and the oil baffle plate, and the sealing A pressing rod is fixedly arranged on the inner bottom of the blocking cap. When the sealing cap is threadedly connected with the cylinder body, the pressing rod passes through and positions the steel wire ball, so that the steel wire ball is compressed and then presses the oil retaining cap tightly; the sealing cap Not airtight with the cylinder. The invention reduces lubricating oil spillage and greatly reduces the pollution of inland river water bodies by oar-mounted fishing boats; most of the inland river fishing boats are livelihood fishing boats, and the technical improvement cost is low, easily accepted by fishermen, and has a prospect of popularization; it has higher safety and prevents rainwater and outboard water into the gearbox, thus prolonging the service life of the hanging propeller.

Description

A device for preventing oil spillage in propeller gearbox

technical field

The invention relates to a solution for preventing oil spillage from a gearbox vent port of a fishing boat with oars, in particular, a device for preventing oil spillage from a gearbox with oars.

Background technique

Oar-mounted fishing boats are cheap and are currently the most commonly used form of fishing boats for small inland river fishing boats. The paddle is a small propulsion device that uses a diesel engine to be placed on the stern deck, and the transmission system and the propeller are integrated and hung on the stern. There is currently no national standard or marine standard for the fishing boat oar hanging device, and it is manufactured according to the standard for agricultural outboard oar hanging. Since most of the oars are manufactured and processed by self-employed workshops, the technology is backward, and the processing accuracy and standardization are difficult to guarantee.

Oar hanging equipment usually has poor processing accuracy and low quality level. After a period of use, a certain amount of lubricating oil will leak. According to statistics, sampling surveys generally produce about 3-5 kg of lubricating oil leakage per year. , it can be seen that the total amount of oil pollution from fishing boats with oars is huge.

Contents of the invention

The purpose of the invention is to provide a device for preventing oil spillage from the paddle-mounted gearbox. Technically improve the structure of the cover plate of the paddle-mounted gearbox for fishing boats, and change the air vent of the original cover plate into a respirator type, which can effectively prevent the paddle-mounted Oil spilled from the gearbox vent of the fishing boat. At the same time, the respirator has the characteristics of safety, environmental protection, and low cost, and is easy to popularize.

The present invention takes the following technical solutions:

A device for preventing oil spillage in a propeller transmission system. An oil vent 5 is provided on the upper box cover plate 4 of the propeller transmission system, and a cylinder is fixed on the upper part of the lube oil vent 5. Inside the cylinder The oil deflector 3 covering the air vent 5 is set aside, and an air vent 301 is arranged on the oil deflector 3; A steel ball 1, the inner bottom of the sealing cap 2 is fixed with a pressing rod 201, when the sealing cap 2 is screwed to the barrel, the pressing rod 201 passes through and positions the steel ball 1, so that the steel ball 1 is After compression, the oil retaining cap 3 is pressed tightly; the sealing cap 2 is not airtight with the barrel.

Preferably, the air vent 5 is circular, and the cylinder and the blocking cap 2 are also circular.

Preferably, the pressing rod 201 is located at the center of the inner bottom of the blocking cap 2 .

Preferably, the cylinder body is welded and fixed to the upper box cover plate 4 .

Preferably, the upper box cover 4 is provided with mounting holes.

Preferably, a vent hole is opened on the side wall of the cylinder, and the vent hole is blocked by the blocking cap 2 .

A paddle-hanging transmission system, comprising a gearbox, a lower box, an oil pipe connecting the two, a transmission gear, an upper box, and the upper box cover 4 according to claim 1 .

The beneficial effects of the present invention are:

1) Reduce the spillage of lubricating oil and greatly reduce the pollution of inland water bodies by fishing boats with oars;

2) Most of the inland river fishing boats are livelihood fishing boats. The improvement cost of this technology is low, easy to accept by fishermen, and has a prospect of promotion;

3) Higher safety, preventing rainwater and outboard water from entering the gearbox, thereby prolonging the service life of the propeller;

4) Liquid level measurement and lubricating oil filling are more convenient and efficient;

5) In the case of preventing lubricating oil from overflowing, it can also take into account the air permeability of the upper case of the gearbox.

6) Technically improve the structure of the cover plate of the gearbox with paddles for fishing boats, and change the air vent of the original cover plate into a respirator type, and the steel ball in the plug cap will form a certain damping to make the lubricating oil fall back, and it is not easy to overflow. Cleverly designed.

Description of drawings

Fig. 1 is a cross-sectional view of an upper box cover plate of a propeller gearbox in the prior art.

Fig. 2 is a top view of the upper casing cover plate of the propeller gearbox in the prior art.

Fig. 3 is a cross-sectional view of the device for preventing oil spillage in the propeller gearbox according to the present invention.

Fig. 4 is a view from direction A in Fig. 3 .

Among the figure, 1. steel wire ball, 2. plugging cap, 3. oil retaining cap, 4. cover plate, 5. air vent; 201. pressure rod, 301. air vent.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 3-Fig. 4, a device for preventing oil spillage in a paddle-mounted gearbox, a lubricating oil vent 5 is provided on the upper box cover plate 4 of the gearbox of the propeller-mounted transmission system, and the upper part of the lubricating oil vent 5 is fixed A cylinder is provided, and an oil deflector 3 covering the air vent 5 is placed in the cylinder, and an air vent 301 is arranged on the oil deflector 3; A steel wire ball 1 is arranged between the oil baffles 3, and a pressing rod 201 is fixedly arranged at the inner bottom of the sealing cap 2. When the sealing cap 2 is screwed to the barrel, the pressing rod 201 passes through and positions the steel wire ball 1. After the steel wool 1 is compressed, press the oil retaining cap 3 tightly; the sealing cap 2 is not airtight with the barrel.

Referring to Fig. 3-4, the air vent 5 is circular, and the cylinder and the blocking cap 2 are also circular. The air vent also serves as an oil filling function.

Referring to FIG. 3 , the pressing rod 201 is located at the center of the inner bottom of the blocking cap 2 .

Referring to FIG. 3 , the cylinder body is welded and fixed to the upper box cover plate 4 .

Referring to FIG. 4 , the upper box cover 4 is provided with mounting holes.

A paddle-hanging transmission system, comprising a gearbox, a lower box, an oil delivery pipe connecting the two, transmission gears, an upper box, and the cover plate 4 of the upper box.

When the paddle is running, the gears in the transmission system rotate, agitate the lubricating oil, the temperature and pressure inside the gearbox rise, and the lubricating oil in the box is splashed during the transmission process, and the current vent on the cover of the upper box is also used for refueling There is no anti-overflow measure at the mouth (see Figure 1-2), and it is easy to cause oil overflow due to the pressure change and volume expansion of the lubricating oil in the gearbox. The oil overflow phenomenon is more obvious when the fishing boat with oars is changing speed or changing direction.

Aiming at the oil leakage phenomenon of the lubricating oil vent of the gearbox, the main improvement method is to change the vent on the gearbox into a respirator with the function of preventing oil spillage. Fig. 1-2 is the cover plate in the prior art, and Fig. 3-4 is the refitted cover plate. When the lubricating oil reaches the cover plate, the oil deflecting plate 3 will block most of the lubricating oil, and only a small amount of lubricating oil will pass through the air holes on the oil deflecting plate 3 and enter into the sealing cap 2. The steel ball will form a certain damping to make the lubricating oil fall back, and it is not easy to overflow. The vertical cylinder on the cover plate can also be provided with openings communicating with the atmosphere, which can further ensure that the pressure in the gearbox is in a balanced state.

When it is necessary to measure the liquid level of the lubricating oil in the gearbox, it is only necessary to unscrew the cap, take out the steel wire ball and the oil deflecting cap, and then perform liquid level measurement and lubricating oil injection. There is no need to disassemble the entire cover plate, which improves the work efficiency and avoids frequent disassembly of the cover plate to cause the sealing ring to fail, thereby causing new lubricating oil leakage points. The opening on the vertical cylinder hides the inside of the plugging cap 2 to prevent the oars from entering the gearbox from being washed by rainwater and outboard water during work, causing damage to the gears.

Vent holes are arranged on the bottom plate of the oil baffle plate 3 and the vertical cylinder side wall of the cover plate. The air vent on the vertical cylinder is hidden inside the blocking cap. The vertical cylinder and the cover plate are welded together, and the sealing cap and the vertical cylinder are connected by threads. The oil baffle plate is welded by a round handle and a circular baffle plate. The height of the round handle just touches the sealing cap. When the sealing cap is screwed in, the oil baffle plate can be pressed tightly to prevent it from deflecting. The volume of the steel wool just fills the vertical cylinder, and the steel wool can be compressed when the plug cap is screwed in.

When performing liquid level measurement and lubricating oil injection, unscrew the plug cap 2, take out the steel ball 1 and the oil baffle plate 3, and then observe the liquid level and fill the lubricating oil through the round hole in the vertical cylinder.

The above are the preferred embodiments of the present invention. Those skilled in the art can also make various transformations or improvements on this basis. Under the premise of not departing from the general concept of the present invention, these transformations or improvements should all belong to the claims of the present invention. within the range.

Claims (7)

1. A device for preventing oil spillage from a propeller gearbox, characterized in that: A lubricating oil vent (5) is arranged on the upper box cover (4) of the gearbox of the transmission system with paddles, and a cylinder is fixedly arranged on the upper part of the lubricating oil vent (5), and a cover is placed in the cylinder to cover the vent (5) oil baffle plate (3), an air vent (301) is set on the oil baffle plate (3); The upper part of the cylinder body is covered with a blocking cap (2), and a steel wool ball (1) is arranged between the blocking cap (2) and the oil baffle (3), and the inner bottom of the blocking cap (2) is fixed with a When the pressing rod (201), the sealing cap (2) is threadedly connected with the cylinder body, the pressing rod (201) passes through and positions the steel wool ball (1), so that the steel wool ball (1) is compressed to press the steel wool ball (1). Oil retaining cap (3); The closure cap (2) is not airtight with the barrel. 2. The device for preventing oil spillage in the propeller gearbox according to claim 1, characterized in that: the air vent (5) is circular, and the cylinder and the sealing cap (2) are also circular shape. 3. The device for preventing oil spillage of a propeller-mounted gearbox according to claim 1, characterized in that: the pressure rod (201) is located at the center of the inner bottom of the blocking cap (2). 4. The device for preventing oil spillage of the paddle-hanging gearbox according to claim 1, characterized in that: the cylinder body and the upper box cover (4) are welded and fixed. 5. The device for preventing oil spillage of the propeller gearbox according to claim 1, characterized in that: the upper box cover (4) is provided with an installation hole. 6 . The device for preventing oil spillage of the propeller gearbox according to claim 1 , wherein a ventilation hole is opened on the side wall of the cylinder, and the ventilation hole is blocked by a blocking cap ( 2 ). 7. A paddle-hanging transmission system, characterized in that: comprise a gearbox, a lower casing, a fuel delivery pipe connecting the two, a transmission gear, an upper casing, and the upper casing cover plate (4) according to claim 1.