Full-rotation steering oar with built-in expansion oil tank

Abstract

The steering oar comprises a well box, an upper box body, a steering assembly and a lower box body, the upper box body is fixed to the top of the well box, the steering assembly is rotatably installed in the well box, the bottom of the steering assembly is connected with the lower box body, and an input assembly in the upper box body is in transmission connection with an output assembly of the lower box body. An expansion oil tank for supplying oil to the upper tank body is arranged in the well tank and located below the upper tank body, and oil can circularly flow between the expansion oil tank and the upper tank body. By means of the arrangement, the external structure of the steering oar can be reduced, the overall height of the steering oar is reduced, the size of the steering oar is reduced, the utilization rate of the space in the steering oar cabin is higher, and the internal space of the steering oar can be reasonably utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ship propeller, especially to a full-rotation rudder propeller with built-in expansion oil tank. BACKGROUND

[0002] With the development of modern ship technology, the power density of the ship presents an increasingly growing trend, especially on the full-rotation tugboat class ship. Correspondingly, higher requirements are put forward for the volume of the full-rotation propeller.

[0003] The prior art with publication number CN206668934U discloses a gear box with adjustable oil level, which has a working state and a shutdown state, and comprises a bevel gear box, an expansion oil tank and a lubricating oil pipe, the bevel gear box and the expansion oil tank are internally provided with lubricating oil, the bevel gear box is internally provided with an oil pressing device for pressing the lubricating oil in the gear box into the expansion oil tank in the working state, the bottom of the expansion oil tank is provided with a drain hole communicating with the bevel gear box, and in the shutdown state, the lubricating oil in the expansion oil tank flows into the bevel gear box through the drain hole and immerses all the transmission components in the bevel gear box.

[0004] In the prior art, the expansion oil tank is arranged above the upper box body, which leads to an increase in the height of the rudder propeller, and thus the phenomenon of insufficient space in the rudder propeller cabin often occurs. UTILITY MODEL CONTENTS

[0005] In order to solve the problem of insufficient space in the rudder propeller cabin caused by the high overall height of the rudder propeller in the prior art, the utility model aims to provide a full-rotation rudder propeller with built-in expansion oil tank, which has a lower height, a more compact overall structure and a smaller volume.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a full-rotation rudder propeller with built-in expansion oil tank, comprising a well box, an upper box body, a rudder turning assembly and a lower box body, the upper box body is fixed on the top of the well box, the rudder turning assembly is rotatably installed in the well box, the bottom of the rudder turning assembly is connected with the lower box body, the input assembly in the upper box body is in transmission connection with the output assembly of the lower box body, the well box is internally provided with an expansion oil tank for supplying oil to the upper box body, the expansion oil tank is located below the upper box body, and the oil can circulate between the expansion oil tank and the upper box body.

[0007] Preferably, the well box is further provided with a hydraulic oil tank.

[0008] Preferably, the hydraulic oil tank is located above the expansion oil tank.

[0009] Preferably, the volume of the hydraulic oil tank is smaller than that of the expansion oil tank.

[0010] As preferred, the first oil suction pipe and the first oil return pipe are arranged between the expansion oil tank and the upper tank body; the oil in the expansion oil tank can enter the upper tank body through the first oil suction pipe, and the oil in the upper tank body can return to the expansion oil tank under the action of gravity.

[0011] As preferred, an oil pump for extracting the oil in the expansion oil tank is arranged on the first oil suction pipe.

[0012] As preferred, an emergency pump group is further arranged on the first oil suction pipe in parallel with the oil pump.

[0013] As preferred, a filter, a cooler, a pressure relay and a first one-way valve are arranged on the first oil suction pipe.

[0014] As preferred, an electric control valve is arranged on the first oil return pipe.

[0015] The beneficial effects of the technical scheme of the utility model are that the external structure of the full-rotation rudder propeller can be reduced, the overall height of the rudder propeller is further reduced, the volume of the full-rotation rudder propeller is reduced, and the space utilization rate of the inside of the rudder propeller cabin is higher, and the inside space of the rudder propeller can be reasonably utilized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a connection structure schematic view of the expansion oil tank and the well tank;

[0017] Figure 2 It is a connection structure schematic view of the expansion oil tank, the hydraulic oil tank and the well tank;

[0018] Figure 3 It is an oil liquid state schematic view in the upper tank body, the expansion oil tank and the well tank after the oil pump is started;

[0019] Figure 4 It is an oil liquid state schematic view in the upper tank body, the expansion oil tank and the well tank after the oil pump is stopped;

[0020] Figure 5 It is a hydraulic principle view of the full-rotation rudder propeller.

[0021] Mark: 1, well tank; 2, cover plate; 3, cavity;

[0022] 4, expansion oil tank; 41, first oil suction pipe; 411, oil pump; 412, filter; 413, cooler; 414, pressure relay; 415, first one-way valve; 416, emergency pump group; 417, second one-way valve; 42, first oil return pipe; 43, electric control valve; 44, overflow pipe; 45, temperature sensor; 46, liquid level high alarm; 47, liquid level low alarm; 48, oil level gauge; 49, first air pipe; 491, air filter;

[0023] 5, upper box; 51, input shaft; 52, upper output shaft; 6, hydraulic oil tank; 7, steering assembly; 8, lower box; 81, oil pressing screw mechanism. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "on" include that first feature is in second feature directly above and obliquely above, or only indicate that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under" include that first feature is in second feature directly below and obliquely below, or only indicate that first feature horizontal height is less than second feature. Embodiment

[0029] As Figures 1-5 exhibited, a full-rotation rudder propeller with built-in expansion oil tank, including upper tank body 5, well tank 1, rudder assembly 7 and lower tank body 8, upper tank body 5 is arranged above well tank 1, rudder assembly 7 is rotatably installed in well tank 1, the bottom of rudder assembly 7 is connected with lower tank body 8, the input assembly in upper tank body 5 is in transmission connection with the output assembly of lower tank body 8, well tank 1 is provided with oil tank for supplying oil to full-rotation rudder propeller.Such arrangement can reduce the external structure of full-rotation rudder propeller, and then reduce the overall height of rudder propeller, and then can more reasonably utilize the internal space of rudder propeller.

[0030] In the embodiment, the oil tank includes expansion oil tank 4 and hydraulic oil tank 6.Specifically, an upward opening is arranged on well tank 1, cover plate 2 is fixed on well tank 1, and cover plate 2 seals the opening; rudder assembly 7 includes a slewing bearing, the top of the slewing bearing is in rotary cooperation with cover plate 2, and the top of the slewing bearing extends out of well tank 1 and is in rotary cooperation; well tank 1, cover plate 2 and the slewing bearing cooperate to form cavity 3; expansion oil tank 4 and hydraulic oil tank 6 are arranged in cavity 3, and expansion oil tank 4 and hydraulic oil tank 6 are fixed with well tank 1.Such arrangement has the expansion oil tank 4 built in the full-rotation rudder propeller well tank 1, and the transmission shaft in well tank 1 is isolated, thereby reducing the oil bubbles caused by the rotation of the rotating shaft in well tank 1, and the oil in the above scheme circulates between well tank 1 and upper gear tank.

[0031] In the embodiment, as Figure 2 shown, the volume of hydraulic oil tank 6 is less than the volume of expansion oil tank 4.

[0032] In order to maintain the oil balance between upper tank body 5 and expansion oil tank 4, in the embodiment, as Figure 3 and Figure 4 shown, the oil in expansion oil tank 4 can be sent to upper tank body 5 through first oil suction pipe 41 and lubricate the input assembly in upper tank body 5; first oil return pipe 42 is further arranged between expansion oil tank 4 and upper tank body 5, and the oil in upper tank body 5 can flow back to expansion oil tank 4 through first oil return pipe 42; overflow pipe 44 is further arranged between upper tank body 5 and expansion oil tank 4.

[0033] Specifically, as shown in Figures 3 to 5 The first oil suction pipe 41 is provided with an oil pump 411 for pumping oil in the expansion oil tank 4 to the upper tank 5. The oil pump 411 is a belt pump or an electric pump. The part of the first oil suction pipe between the oil pump 411 and the expansion oil tank 4 is provided with a filter 412, a cooler 413, a temperature sensor 45, a pressure relay 414 and a first one-way valve 415 in sequence. In this way, the filter 412 and the cooler 413 can effectively ensure that the oil entering the upper tank 5 is clean, the temperature sensor 45 and the pressure relay 414 can ensure the temperature and pressure in the circulating oil circuit, and the first one-way valve 415 can prevent backflow of oil, so as to ensure that the oil in working state is stable.

[0034] Further preferably, as shown in Figures 3 to 5 The first oil return pipe 42 is provided with an electric control valve 43. By controlling the start-stop and opening degree of the electric control valve 43, the change rate of the oil in the upper tank 5 can be controlled. The electric control valve 43 is an electric control ball valve.

[0035] Further preferably, as shown in Figure 3 and Figure 4 The oil inlet of the first oil suction pipe 41 is located below the lowest oil level line of the expansion oil tank 4.

[0036] In order to ensure that each tank contains sufficient oil, in the embodiment, the oil inlet of the first oil suction pipe 41 is located below the lowest oil level line of the expansion oil tank 4; the oil inlet of the first oil return pipe 42 is located below the oil outlet of the first oil suction pipe 41; the oil inlet of the overflow pipe 44 is located between the oil inlet of the first oil return pipe 42 and the oil outlet of the first oil suction pipe 41, and the oil inlet of the overflow pipe 44 is located above the input shaft in the input assembly.

[0037] In the embodiment, the upper tank 5 is provided with a lubricating oil circuit for lubricating the bearings and gears in the upper tank 5. The first one-way valve 415 on the oil suction pipe is arranged on the part of the oil suction pipe between the lubricating oil circuit and the oil outlet of the oil suction pipe.

[0038] In the embodiment, as shown in Figure 5As shown, the emergency pump group 416 is further arranged between the expansion tank 4 and the upper tank body 5; after the main power source of the full-rotation rudder propeller suddenly stops working, the oil pump 411 stops working; however, at this time, the full-rotation rudder propeller is still in a high-speed movement state at the last time, if there is no oil for lubrication and cooling, the temperature of the bearing and the meshing gear will rapidly rise, and the high-speed rotation makes the oil liquid remaining on the gear and the bearing be quickly thrown away, thereby reducing the service life of the bearing and the gear, and making the lubricating oil liquid more viscous; therefore, the emergency pump group 416 is started immediately, the emergency pump group 416 extracts the oil liquid in the expansion tank 4 and sends the oil liquid to the upper tank body 5 to cool and lubricate the transmission structure and the supporting structure in the upper tank body 5; at this time, if the electric control valve is closed, the oil liquid in the upper tank body 5 can still flow back to the expansion tank 4 through the overflow pipe 44.

[0039] Further preferably, the emergency pump group 416 is a motor pump, which can be directly driven by a standby power source.

[0040] Further preferably, the emergency pump group 416 is arranged in parallel with the oil pump 411 on the oil suction pipe, the oil outlet of the emergency pump group 416 is connected with the part of the oil suction pipe between the filter 412 and the oil pump 411; the second one-way valve 417 is arranged at the oil outlet of the emergency pump group 416, and the third one-way valve is arranged at the oil outlet of the oil pump 411.

[0041] In order to facilitate monitoring the amount of oil liquid in each tank body, in the embodiment, the oil level gauge 48 and the liquid level high alarm 46 are arranged in the upper tank body 5, the expansion tank 4 and the hydraulic oil tank 6 for detecting the liquid level; the expansion tank 4 and the hydraulic oil tank 6 are further provided with the liquid level low alarm 47 for detecting the liquid level; wherein the oil level gauge 48 is a mechanical oil level gauge 48. In this way, the position of the oil liquid in the tank body can be immediately and clearly known through the oil level gauge 48, and the oil liquid in the upper tank body 5 can be timely supplemented through the alarm.

[0042] In the embodiment, the inner wall of the well tank 1 is provided with a rib plate, so that the strength of the well tank 1 is higher; the well tank 1 bears the weight of the entire rudder propeller, the water power thrust of the propeller and the turning rudder lateral thrust, thereby improving the reliability of the entire rudder propeller system.

[0043] In the embodiment, the first air breather pipe 49 is installed on the expansion tank 4 and the hydraulic oil tank 6, and the air filter 491 is installed at the air outlet of the first air breather pipe.

[0044] In the embodiment, the oil pressing screw mechanism 81 is further included, which can exchange the oil liquid between the upper tank body 5 and the lower tank body 8, so as to ensure that there is sufficient oil liquid in the upper tank body 5 and the lower tank body 8.

[0045] In this embodiment, the hydraulic oil tank 6 is provided with a second oil suction pipe, a second oil return pipe and a second breather pipe. The hydraulic oil tank 6 sends oil to the rudder driving assembly of the full-rotation rudder propeller through the second oil suction pipe. The oil in the rudder driving assembly is returned to the second oil return pipe through the second oil return pipe. The air outlet of the second breather pipe is connected with the air filter 412.

[0046] In this embodiment, the input assembly includes an input shaft 51 and an upper output shaft 52. The input shaft 51 is transversely arranged, and the upper output shaft 52 is vertically arranged. The input shaft 51 and the output shaft 52 are in gear transmission. The upper output shaft extends into the slewing bearing. The slewing bearing is provided with a rotatable transmission shaft. The transmission shaft is in transmission connection with the upper output shaft through a spline sleeve. The output assembly includes a lower output shaft. The lower output shaft is rotatably installed on the lower box body 8. The lower output shaft and the transmission shaft are in gear transmission. One end of the lower output shaft extends out of the lower box body 8 and is provided with a propeller. The rudder driving assembly includes a rudder gear installed on the cover plate 2. The rudder gear is in gear transmission with the slewing bearing. The motor is installed on the cover plate 2 and is connected with the rudder gear. The structure of the full-rotation rudder propeller can refer to the patent technical documents with the publication numbers CN107444603A, CN216140161U and CN209814250U. Embodiment

[0047] Different from embodiment 1: The hydraulic oil tank 6 is installed above the well box 1. The cavity 3 in the well box 1 is used for placing the expansion oil tank 4. The other parts of this embodiment are the same as those of embodiment 1. Embodiment

[0048] A method for supplying oil to the full-rotation rudder propeller with the expansion oil tank 4 according to the above-mentioned embodiment 1 or embodiment 2,

[0049] When the main power source of the full-rotation rudder propeller is started, the oil pump 411 works, and the electric control ball valve is opened. The oil pump 411 pumps the oil in the expansion oil tank 4 to the upper box body 5 to lubricate the bearings and gears in the upper box body 5. When the oil in the upper box body 5 rises to the oil inlet of the oil return pipe, the oil in the upper box body 5 automatically flows into the expansion oil tank 4 under the action of gravity. Then, the oil circulates between the upper box body 5 and the expansion oil tank 4.

[0050] During the working process of the main power source, if the oil pressure on the lubricating oil circuit in the upper box body is lower than the warning value, the emergency pump group 416 is automatically started. After the main power source stops, the emergency pump group stops working.

[0051] When the main power source stops working, the emergency pump group starts working; and then when the upper liquid level high alarm of the upper tank body starts working, the emergency pump group stops working, the electric control valve on the first oil return pipe of the expansion tank 4 is closed, and then the upper tank body 5 stores enough oil liquid for lubrication. Among them, the liquid level in the rudder oar upper tank body rises, and the liquid level in the expansion tank decreases.

[0052] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above-mentioned embodiments without departing from the principles and spirits of the present application within the scope of the present application.

Claims

1. A fully azimuth propeller with an expansion tank, comprising a well housing (1), an upper housing (5), a rudder assembly (7), and a lower housing (8), wherein the upper housing (5) is fixed to the top of the well housing (1), the rudder assembly (7) is rotatably installed inside the well housing (1), the bottom of the rudder assembly (7) is connected to the lower housing (8), and the input component inside the upper housing (5) is drively connected to the output component of the lower housing (8), characterized in that: The well box (1) is equipped with an expansion oil tank (4) that supplies oil to the upper box (5). The expansion oil tank (4) is located below the upper box (5), and the oil can circulate between the expansion oil tank (4) and the upper box (5).

2. The azimuth propeller built into the expansion tank (4) according to claim 1, characterized in that: A hydraulic oil tank (6) is also installed inside the well box (1).

3. The azimuth propeller with an internal expansion tank according to claim 2, characterized in that: The hydraulic oil tank (6) is located above the expansion oil tank (4).

4. The azimuth propeller with an expansion tank built-in according to claim 2, characterized in that: The volume of the hydraulic oil tank (6) is smaller than that of the expansion oil tank (4).

5. The azimuth propeller with an expansion tank built-in according to claim 1, characterized in that: A first oil suction pipe (41) and a first oil return pipe (42) are provided between the expansion tank (4) and the upper tank (5); The oil in the expansion tank (4) can enter the upper tank (5) through the first oil suction pipe (41), and the oil in the upper tank (5) can return to the expansion tank (4) under the action of gravity.

6. The azimuth propeller with an expansion tank built-in according to claim 5, characterized in that: An oil pump (411) for drawing oil from the expansion tank (4) is installed on the first oil suction pipe (41).

7. A fully azimuth-rotor propeller with an expansion tank built-in according to claim 6, characterized in that: It also includes an emergency pump set (416), which is connected in parallel with the oil pump (411) on the first oil suction pipe (41).

8. A fully azimuth-rotor propeller with an expansion tank built-in according to claim 5, characterized in that: The first oil suction pipe (41) is equipped with a filter (412), a cooler (413), a pressure relay (414) and a first check valve (415).

9. A fully azimuth-rotor propeller with an expansion tank built-in according to claim 1, characterized in that: An electrically controlled valve (43) is installed on the first return oil pipe (42).

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