CN219806957U - Gear transmission device for driving ship propeller - Google Patents

Abstract

A gear transmission device for driving a ship propeller relates to the field of ship propulsion. The utility model aims to solve the problem that the expected lubricating effect cannot be achieved due to uneven lubricating oil sprayed to the external teeth in the conventional oil spraying type lubrication. The motor is arranged on the outer side wall of a box body, a driving bevel gear is sleeved on an output shaft of the motor, a driven bevel gear is rotatably arranged in the box body, a lubricating oil circulation processing unit is arranged in the box body, one end of a transmission shaft is connected with the output shaft of the motor, the other end of the transmission shaft is rotatably and hermetically inserted in the lubricating oil circulation processing unit, a stirring paddle is sleeved on the transmission shaft, the stirring paddle is driven by the transmission shaft to stir lubricating oil in the lubricating oil circulation processing unit, a lubricating oil injection cylinder body is coaxially sleeved on the transmission shaft, an output pipe of the lubricating oil circulation processing unit extends into the lubricating oil injection cylinder body, and a spray head is arranged on the lubricating oil injection cylinder body. The utility model is used for ship power propulsion.

Description

Gear transmission device for driving ship propeller

Technical Field

The utility model relates to a gear transmission device, in particular to a gear transmission device for driving a ship propeller, and belongs to the field of propulsion devices of ships.

Background

The marine gearbox is critical to ship running, and can transmit power generated by an engine to the propeller through the transmission system, so that the running efficiency and comfort of the ship are ensured. Meanwhile, the gearbox can also adjust the speed changer, so that the ship can select different speeds and directions according to different conditions, and the speed changer is suitable for various navigation environments. If the marine gearbox fails, the operation of the vessel will be significantly affected and even the safety of the vessel will be compromised.

The marine gearbox can have various faults due to abrasion, corrosion, overheating and the like in the long-term use process. Therefore, it is very important to perform correct maintenance on the gear box, so that the service life of the gear box can be prolonged, and the normal operation of the gear box can be ensured.

The gear transmission device is various gear structures which are mutually meshed for transmission or mutually matched for connection. The device is mainly used for transmitting the power change speed. The lubricating oil is the blood flowing in the gear box and plays a vital role. The lubricating oil is the most basic lubricating function, and forms a layer of oil film on the tooth surface and the bearing, so that the mutual friction between gear parts can be prevented, and the abrasion is reduced; meanwhile, in the rotating process, the lubricating oil can also take away a large amount of heat generated during movement between each friction pair, so that the gears and the bearings are prevented from being burnt. In addition, the lubricating oil has good rust and corrosion prevention functions, and can prevent the moisture and oxygen in the gear box from corroding gear parts. The lubricating oil can also take away impurities in the continuous flowing process, so that the inside of the gear box is ensured to be clean. Therefore, periodic monitoring of the lubricating oil can be guaranteed by periodically checking the lubricating oil, measures are taken in time when the lubricating oil is in a problem, and new lubricating oil is replaced, so that the service life of the gearbox is prolonged.

The lubrication mode of the closed gear transmission is determined according to the circumferential speed of the gear, when the circumferential speed is less than or equal to 12m/s, oil sump lubrication is mostly adopted, and when the circumferential speed is greater than 12m/s, the oil sump lubrication is not suitable, because: firstly, the peripheral speed is too high, and most of the oil on the gear is thrown out, so that the meshing area cannot be reached. Secondly, the agitation is too vigorous, which increases the temperature rise of the oil and reduces the lubrication performance. Thirdly, impurities precipitated at the bottom of the box can be stirred up, and abrasion of the gears is accelerated. Therefore, oil jet lubrication is often used. The oil spraying lubrication is generally that a nozzle with a circular oil outlet is perpendicular to the tooth surface of the gear, and continuous oil spraying is carried out at the meshing position of the two gears. When the lubricating oil is sprayed onto the external teeth rotating at a high speed, most of the lubricating oil is splashed into the cavity outside the gear by the external teeth, only a small part of the lubricating oil is remained on the external teeth to participate in meshing, and the splashed lubricating oil is unevenly attached to the external teeth, so that the expected lubricating effect cannot be achieved.

Therefore, the existing oil injection type lubrication has the problem that the lubricating oil injected onto the external teeth is not uniform, so that the expected lubrication effect cannot be achieved.

Disclosure of Invention

The utility model aims to solve the problem that the expected lubricating effect cannot be achieved due to uneven lubricating oil sprayed to external teeth in the conventional oil spraying type lubrication. Further provided is a gear assembly for a marine propeller drive.

The technical scheme of the utility model is as follows: the gear transmission device for driving the ship propeller comprises a motor, a driving bevel gear, a driven bevel gear and a box body, wherein the motor is arranged on the outer side wall of the box body, an output shaft of the motor penetrates through the side wall of the box body and then extends into the box body, the driving bevel gear is sleeved on the output shaft of the motor, the driven bevel gear is rotatably arranged in the box body, and the driven bevel gear is meshed with the driving bevel gear; the device also comprises a transmission shaft, a stirring paddle, a lubricating oil circulation treatment unit, a lubricating oil injection cylinder body and a spray head; the lubricating oil circulation processing unit is installed in the box, the one end of transmission shaft and the output shaft of motor are connected, the other end rotation seal cartridge of transmission shaft is in lubricating oil circulation processing unit, the stirring rake suit is on the transmission shaft, and the stirring rake realizes stirring the lubricating oil in the lubricating oil circulation processing unit under the drive of transmission shaft, lubricating oil injection barrel coaxial sleeve is on the transmission shaft, and leave the clearance between the lower part of lubricating oil injection barrel and driven bevel gear's the gear shaft tip, lubricating oil circulation processing unit's oil spout play oil pipe subassembly stretches into in the lubricating oil injection barrel, the shower nozzle is installed on lubricating oil injection barrel, and the spout of shower nozzle orientation drive bevel gear's tooth body side and form 5-10 contained angles with the tooth flank of drive bevel gear between, lubricating oil circulation processing unit's output tube and shower nozzle butt joint.

Preferably, the spray head is an elongated spray head.

Further, the lubricating oil circulation processing unit comprises a baffle, a filter screen, a circulating oil pump, a lubricating oil pump, an impurity oil suction pipe, an impurity oil outlet pipe, an oil injection oil inlet pipe and an oil injection oil outlet pipe assembly, wherein the baffle is vertically and hermetically arranged in the box body and forms a lubricating oil circulation chamber with the inner side wall of the box body; one end of the oil injection oil inlet pipe extends into the filtering lubrication oil chamber, the other end of the oil injection oil inlet pipe is connected with the lubrication oil pump, one end of the oil injection oil outlet pipe assembly is connected with the lubrication oil pump, and the other end of the oil injection oil outlet pipe assembly extends into the lubrication oil injection cylinder.

Further, the oil spout delivery pipe subassembly includes that oil spout house steward, first oil spout are in charge of, second oil spout are in charge of and two check valves, and the one end of first oil spout is in charge of and second oil spout is in charge of and is connected with oil spout house steward, and the other end of first oil spout is in charge of and second oil spout is in charge of and is connected with a shower nozzle respectively, installs a check valve on every first oil spout is in charge of and the second oil spout is in charge of.

Further, one end of the transmission shaft is connected with an output shaft of the motor through a coupler.

Further, the device also comprises two bearings, and the lubricating oil injection cylinder body is connected with the transmission shaft through the two bearings.

Still further, it still includes the spacer, and the spacer suit is on the transmission shaft, and the spacer is located between two bearings.

Still further, it also includes lock nut, lock nut screw on the transmission shaft of bearing outside.

Still further, it still includes the bearing frame, and the bearing frame is installed in impurity lubrication oil chamber, and the tip of transmission shaft is installed in the bearing frame.

Compared with the prior art, the utility model has the following effects:

1. the utility model is provided with the lubricating oil circulation processing unit in the box body of the gear transmission device, the lubricating oil circulation processing unit is divided into two chambers, the lubricating oil containing impurities is sucked into the impurity lubricating oil chamber, and the lubricating oil containing impurities is stirred up under the action of the stirring paddle, so that the lubricating oil circulation processing unit is convenient for communicating with the lubricating oil of the filtering lubricating oil chamber, and can also prevent the filter screen from being blocked, thereby avoiding or reducing the abrasion problem of the lubricating oil containing impurities to the tooth surface of the gear.

2. The utility model effectively utilizes the rotation power of the motor, and besides the rotation power can be transmitted to the driven bevel gear, the rotation power of the motor is transmitted to the stirring paddle through the connection between the transmission shaft and the motor output shaft, so that the stirring paddle rotates, and the stirring paddle not only has the function of stirring the lubricating oil containing impurities, but also prevents the filter screen from being blocked. No external power source is needed.

3. According to the utility model, the strip-shaped spray head is adopted, when the bevel gear is subjected to oil spraying lubrication, oil curtain-shaped surface oil spraying can be formed, the lubrication mode can increase the oil spraying area, and meanwhile, the spraying angle of the strip-shaped spray head forms an included angle of 5-10 degrees with the tooth surface of the drive bevel gear, so that the oil spraying area is ensured, lubricating oil can be sprayed between two adjacent external teeth, and when the bevel gear rotates, the lubricating oil is outwards swung to realize the flow of the lubricating oil, so that the uniformity of the lubricating oil spraying is improved, and the lubrication effect is ensured.

Drawings

FIG. 1 is a schematic top view of the overall structure of the present utility model, wherein the first arrow is shown in a horizontal position and is shown as an arrow pointing to the right in the figure: the direction of flow of the lubricant containing impurities; the second arrow is represented first horizontally to the left, then vertically downward, and finally horizontally to the left: the direction of flow of the filtered lubricating oil.

Fig. 2 is a schematic diagram of the connection relationship between the lubricant injection cylinder 7 and the propeller shaft 5.

Fig. 3 is a left side view of the lubricant injection cylinder 7 in the state of fig. 1.

Detailed Description

The first embodiment is as follows: referring to fig. 1 to 3, a gear transmission for driving a propeller of a ship according to the present embodiment includes a motor 1, a drive bevel gear 2, a driven bevel gear 3, and a housing 4, wherein the motor 1 is mounted on an outer sidewall of the housing 4, an output shaft of the motor 1 extends into the housing 4 after passing through the sidewall of the housing 4, the drive bevel gear 2 is sleeved on an output shaft of the motor 1, the driven bevel gear 3 is rotatably mounted in the housing 4, and the driven bevel gear 3 is engaged with the drive bevel gear 2; the device also comprises a transmission shaft 5, a stirring paddle 6, a lubricating oil circulation treatment unit, a lubricating oil injection cylinder 7 and a spray head 8; the lubricating oil circulation processing unit is installed in the box 4, the one end of transmission shaft 5 and the output shaft of motor 1, the other end of transmission shaft 5 rotates sealed cartridge in the lubricating oil circulation processing unit, stirring rake 6 suit is on transmission shaft 5, and stirring rake 6 realizes stirring the lubricating oil in the lubricating oil circulation processing unit under the drive of transmission shaft 5, lubricating oil injection barrel 7 coaxial suit is on transmission shaft 5, and leave the clearance between the lower part of lubricating oil injection barrel 7 and the gear shaft tip of driven bevel gear 3, lubricating oil injection barrel 7 realizes spacing in axial and radial direction through the draw-in groove in the box 4, the oil spout play oil pipe subassembly 17 of lubricating oil circulation processing unit stretches into in the lubricating oil injection barrel 7, shower nozzle 8 is installed on lubricating oil injection barrel 7, and the spout of shower nozzle 8 orientation initiative bevel gear 2 tooth body side and with initiative bevel gear 2 form 5-10 contained angles between the tooth face, lubricating oil circulation processing unit's output tube and shower nozzle 8 butt joint.

The gear transmission device of the embodiment is mainly used in ships, a marine gearbox is one of important transmission devices of the ships, and the gear transmission device is mainly used for transferring and converting rotation speed and torque generated by a power device (a finger motor) through a gear system and finally driving a propeller to propel. In addition, the marine gearbox can also perform operations such as speed change (realized by the transmission ratio of gears), reverse transmission and the like on the transmission, coordinate the operation of each part of the ship and ensure that the ship runs safely, efficiently and stably.

This embodiment can realize self-lubricating when marine transmission moment of torsion and power, and this lubricating oil's interpolation has offered the oilhole on through box 4 to add new lubricating oil according to the proportion regularly, when changing, cleaning transfer device, unpack it and clear up, dirty lubricating oil discharges through the oil drain hole that the box lower part was predetermine.

The second embodiment is as follows: the head 8 of the present embodiment is an elongated head, which will be described with reference to fig. 1 to 3. The device is mainly used for realizing oil curtain oil injection. Other compositions and connection relationships are the same as those of the first embodiment.

The utility model adopts two spray heads 8, mainly in order to spray lubricating oil before engagement no matter when the drive bevel gear 2 is in forward rotation or reverse rotation, and the utility model sprays oil near the engagement position, so that the lubricating oil can be effectively prevented from being thrown away when the drive bevel gear 2 rotates at high speed and does not reach the engagement position, thereby ensuring the lubrication effect of the engagement position.

And a third specific embodiment: referring to fig. 1, the lubricating oil circulation processing unit of the present embodiment includes a baffle 9, a filter screen 10, a circulation oil pump 11, a lubricating oil pump 12, an impurity oil suction pipe 13, an impurity oil outlet pipe 14, an oil injection oil inlet pipe 15 and an oil injection oil outlet pipe assembly 17, wherein the baffle 9 is vertically and hermetically installed in a tank body 4 and forms a lubricating oil circulation chamber with the inside wall of the tank body 4, the filter screen 10 is arranged in parallel with the baffle 9, the filter screen 10 is installed in the lubricating oil circulation chamber, the filter screen 10 divides the lubricating oil circulation chamber into an impurity lubricating oil chamber and a filtered lubricating oil chamber, the circulation oil pump 11 and the lubricating oil pump 12 are installed outside the lubricating oil circulation chamber, one end of the impurity oil suction pipe 13 is abutted to the bottom of the tank body 4, the other end of the impurity oil suction pipe 13 is connected with the circulation oil pump 11, one end of the impurity oil outlet pipe 14 is connected with the circulation oil pump 11, and the other end of the impurity oil outlet pipe 14 extends into the impurity lubricating oil chamber; one end of an oil injection oil inlet pipe 15 stretches into the filtering lubrication oil cavity, the other end of the oil injection oil inlet pipe 15 is connected with the lubrication oil pump 12, one end of an oil injection oil outlet pipe assembly 17 is connected with the lubrication oil pump 12, and the other end of the oil injection oil outlet pipe assembly 17 stretches into the lubrication oil injection cylinder 7.

So set up, this embodiment provides a processing unit that can realize self-lubricating and filtering capability, realizes collecting alone through impurity lubricating oil cavity to the lubricating oil that has carried out the meshing, realizes communicating with the lubricating oil of filtering the lubricating oil cavity room through the stirring after collecting to prevent filter screen 10 from blockking up. Other compositions and connection relationships are the same as those of the first or second embodiment.

The filter screen 10 with 100-200 meshes is adopted in the embodiment, and at this time, some impurities generated in the meshing process can be filtered.

The specific embodiment IV is as follows: referring to fig. 3, the oil injection and delivery pipe assembly 17 of the present embodiment includes an oil injection manifold 17-1, a first oil injection branch pipe 17-2, a second oil injection branch pipe 17-3, and two check valves 17-4, wherein one ends of the first oil injection branch pipe 17-2 and the second oil injection branch pipe 17-3 are connected to the oil injection manifold 17-1 after being assembled, and the other ends of the first oil injection branch pipe 17-2 and the second oil injection branch pipe 17-3 are respectively connected to a nozzle 8, and one check valve 17-4 is installed on each of the first oil injection branch pipe 17-2 and the second oil injection branch pipe 17-3.

The arrangement is convenient for distributing lubricating oil, realizes the lubrication of the drive bevel gear 2 just before entering the meshing state, and is suitable for the forward rotation and the reverse rotation of the drive bevel gear 2. Other compositions and connection relationships are the same as those of the first, second or third embodiments.

Fifth embodiment: the present embodiment will be described with reference to fig. 1, in which one end of a transmission shaft 5 is connected to an output shaft of a motor 1 via a coupling. So set up, the rotation power of the motor of being convenient for effectively utilize. Other compositions and connection relationships are the same as those of any one of the first to fourth embodiments.

Specific embodiment six: the present embodiment will be described with reference to fig. 2, which further includes two bearings 18, and the lubricant injection cylinder 7 is connected to the propeller shaft 5 via the two bearings 18. So arranged, the lubricant injection cylinder 7 is kept stationary in a fixed position without affecting the rotation of the drive shaft 5. Other compositions and connection relationships are the same as those in any one of the first to fifth embodiments.

Seventh embodiment: the present embodiment is described with reference to fig. 2, and further includes a spacer 19, where the spacer 19 is sleeved on the transmission shaft 5, and the spacer 19 is located between two bearings 18. So set up, be convenient for carry out spacingly to two bearings. Other compositions and connection relationships are the same as those in any one of the first to sixth embodiments.

Eighth embodiment: the present embodiment will be described with reference to fig. 2, which further includes a lock nut 20, and the lock nut 20 is screwed on the drive shaft 5 outside the bearing 18. So set up, be convenient for carry out spacingly to the bearing in the outside. Other compositions and connection relationships are the same as those in any one of the first to seventh embodiments.

Detailed description nine: the present embodiment will be described with reference to fig. 1, which further includes a bearing housing installed in the impurity lubrication chamber, and an end portion of the transmission shaft 5 is installed in the bearing housing. So set up, be convenient for support the tip of transmission shaft. Other compositions and connection relationships are the same as those in any one of the first to eighth embodiments.

The working principle of the present utility model is explained with reference to fig. 1 to 3:

the utility model is used in practice in a vessel, in particular for driving a propeller in a vessel.

Firstly, a motor 1 is installed according to a set position, then a driving bevel gear 2 and a driven bevel gear 3 are installed on a box 4, and the driven bevel gear 3 is connected with an external propeller shaft for driving a propeller to rotate through a coupler.

The output shaft of the motor 1 is provided with a coupler which is used for being connected with the transmission shaft 5, the inside of the box body 4 is provided with a filter screen 10, the transmission shaft 5 penetrates through the filter screen 10 and stretches into an impurity lubricating oil cavity, wherein a ferrule is arranged on the filter screen 10, a bearing is embedded on the ferrule, and the bearing is sleeved on the transmission shaft 5, so that the connection between the transmission shaft 5 and the filter screen 10 is realized.

The circulation mode of lubricating oil: the impurity suction pipe 13 sucks the impurity-containing lubricating oil located at the bottom of the tank body 4 through the lubricating oil pump 12 and discharges the impurity-containing lubricating oil into the impurity lubricating oil chamber through the impurity discharge pipe 14. The lubricating oil containing impurities in the impurity lubricating oil chamber is stirred by the stirring paddle, then permeates into the filtering lubricating oil chamber through the filter screen 10, and after the filtered lubricating oil is sucked into the oil injection oil inlet pipe 15, the lubricating oil is input into the oil injection oil outlet pipe assembly 17 through the lubricating oil pump 12 and is sprayed onto the outer tooth surface of the drive bevel gear 2 through the nozzle 8, so that gear lubrication is realized.

While the utility model has been described with reference to the preferred embodiments, it is not intended to limit the utility model, but rather to cover various modifications which may be made by those skilled in the art without departing from the spirit of the utility model.

Claims (9)

1. The utility model provides a gear drive for ship propeller drive, it includes motor (1), initiative taper gear (2), driven bevel gear (3) and box (4), motor (1) is installed on the lateral wall of box (4), and extend to in box (4) after the output shaft of motor (1) passes the lateral wall of box (4), initiative taper gear (2) suit is on the output shaft of motor (1), driven bevel gear (3) rotate and install in box (4), and driven bevel gear (3) meshes with initiative taper gear (2);

the method is characterized in that: the device also comprises a transmission shaft (5), a stirring paddle (6), a lubricating oil circulation treatment unit, a lubricating oil injection cylinder (7) and a spray head (8);

the lubricating oil circulation processing unit is arranged in the box body (4), one end of the transmission shaft (5) is connected with the output shaft of the motor (1), the other end of the transmission shaft (5) is rotatably and hermetically inserted in the lubricating oil circulation processing unit, the stirring paddle (6) is sleeved on the transmission shaft (5), the stirring paddle (6) is driven by the transmission shaft (5) to stir lubricating oil in the lubricating oil circulation processing unit, the lubricating oil injection cylinder (7) is coaxially sleeved on the transmission shaft (5), a gap is reserved between the lower part of the lubricating oil injection cylinder (7) and the end part of the gear shaft of the driven bevel gear (3), the oil injection outlet pipe assembly (17) of the lubricating oil circulation processing unit extends into the lubricating oil injection cylinder (7), the spray head (8) is arranged on the lubricating oil injection cylinder (7), a nozzle of the spray head (8) faces the tooth body side of the driving bevel gear (2) and forms an included angle of 5-10 DEG with the tooth surface of the driving bevel gear (2), and the output pipe of the lubricating oil circulation processing unit is in butt joint with the spray head (8).

2. A gear assembly for a marine propeller drive as claimed in claim 1, wherein: the spray head (8) is a strip spray head.

3. A gear assembly for a marine propeller drive according to claim 1 or 2, wherein: the lubricating oil circulation treatment unit comprises a baffle (9), a filter screen (10), a circulating oil pump (11), a lubricating oil pump (12), an impurity oil suction pipe (13), an impurity oil outlet pipe (14), an oil injection oil inlet pipe (15) and an oil injection oil outlet pipe assembly (17), wherein the baffle (9) is vertically and hermetically arranged in the box body (4) and forms a lubricating oil circulation cavity with the inner side wall of the box body (4), the filter screen (10) is arranged in parallel with the baffle (9), the filter screen (10) is arranged in the lubricating oil circulation cavity, the lubricating oil circulation cavity is divided into an impurity lubricating oil cavity and a filtering lubricating oil cavity by the filter screen (10), the circulating oil pump (11) and the lubricating oil pump (12) are arranged outside the lubricating oil circulation cavity, one end of the impurity oil suction pipe (13) is propped against the bottom of the box body (4), the other end of the impurity oil suction pipe (13) is connected with the circulating oil pump (11), one end of the impurity oil outlet pipe (14) is connected with the circulating oil pump (11), and the other end of the impurity oil outlet pipe (14) stretches into the impurity lubricating oil cavity;

one end of an oil injection oil inlet pipe (15) stretches into the filtering lubrication oil cavity, the other end of the oil injection oil inlet pipe (15) is connected with a lubrication oil pump (12), one end of an oil injection oil outlet pipe assembly (17) is connected with the lubrication oil pump (12), and the other end of the oil injection oil outlet pipe assembly (17) stretches into the lubrication oil injection cylinder body (7).

4. A gear assembly for a marine propeller drive as claimed in claim 3, wherein: the oil injection and oil outlet pipe assembly (17) comprises an oil injection main pipe (17-1), a first oil injection branch pipe (17-2), a second oil injection branch pipe (17-3) and two one-way valves (17-4), wherein one ends of the first oil injection branch pipe (17-2) and the second oil injection branch pipe (17-3) are connected with the oil injection main pipe (17-1) after being gathered, the other ends of the first oil injection branch pipe (17-2) and the second oil injection branch pipe (17-3) are respectively connected with a spray head (8), and one-way valve (17-4) is arranged on each of the first oil injection branch pipe (17-2) and the second oil injection branch pipe (17-3).

5. A gear assembly for a marine propeller drive as claimed in claim 1, wherein: one end of the transmission shaft (5) is connected with an output shaft of the motor (1) through a coupler.

6. A gear assembly for a marine propeller drive as set forth in claim 5, wherein: the lubricating oil injection cylinder (7) is connected with the transmission shaft (5) through the two bearings (18).

7. A gear assembly for a marine propeller drive as set forth in claim 6, wherein: the novel transmission shaft also comprises a spacer bush (19), wherein the spacer bush (19) is sleeved on the transmission shaft (5), and the spacer bush (19) is positioned between the two bearings (18).

8. A gear assembly for a marine propeller drive as set forth in claim 7, wherein: the device also comprises a lock nut (20), wherein the lock nut (20) is screwed on a transmission shaft (5) outside the bearing (18).

9. A gear assembly for a marine propeller drive as set forth in claim 8, wherein: the device also comprises a bearing seat, wherein the bearing seat is arranged in the impurity lubricating oil chamber, and the end part of the transmission shaft (5) is arranged in the bearing seat.