Fuel tank assembly and work machine

Abstract

This invention relates to the field of work machinery technology, and proposes a fuel tank assembly and work machinery. The fuel tank assembly includes an auxiliary fuel tank. The auxiliary fuel tank is mounted on the frame of the work machinery along its width. The auxiliary fuel tank contains a first fuel tank, a second fuel tank, and a third fuel tank. The first and second fuel tanks are respectively located on both sides of the third fuel tank along the width of the work machinery. The first, second, and third fuel tanks are interconnected. The first and second fuel tanks have equal volumes and flow areas. The flow area of ​​the third fuel tank is smaller than that of the first fuel tank. Therefore, when the work machinery sways, it increases the resistance to the flow of oil from the first or second fuel tank through the third fuel tank to the second or first fuel tank. This auxiliary fuel tank not only has a fuel storage function but also reduces the sway of the work machinery, effectively ensuring the work efficiency and personal safety of the operators.

Description

Technical Field

[0001] This invention relates to the field of work machinery technology, and in particular to a fuel tank assembly and work machinery. Background Technology

[0002] An excavator is a specialized piece of machinery that can excavate and load soil, coal, silt, gravel, etc., to complete tasks such as land leveling, ditch digging, and debris clearing. It has wide applications in road construction, bridge building, construction, and water conservancy projects. An amphibious excavator is a machine capable of operating both on land and in water. When operating in water, it is inevitably affected by wind and waves, causing it to sway from side to side, affecting the efficiency and safety of the workers. Summary of the Invention

[0003] This invention provides a fuel tank assembly and operating machinery to solve or improve the problem that existing amphibious excavators may experience swaying when operating in water, causing the excavator to rock from side to side, which affects the work efficiency and personal safety of the workers.

[0004] According to a first aspect of the present invention, a fuel tank assembly is provided, including an auxiliary fuel tank.

[0005] The auxiliary fuel tank is mounted on the frame of the operating machinery along its width. The auxiliary fuel tank contains a first fuel compartment, a second fuel compartment, and a third fuel compartment. The first and second fuel compartments are respectively located on either side of the third fuel compartment along the width of the operating machinery. The first, second, and third fuel compartments are interconnected. The volume of the first fuel compartment is equal to the volume of the second fuel compartment. The flow area of ​​the first fuel compartment is equal to the flow area of ​​the second fuel compartment. The flow area of ​​the third fuel compartment is smaller than the flow area of ​​the first fuel compartment.

[0006] According to a fuel tank assembly provided by the present invention, the third fuel tank is located at the center position in the width direction of the operating machinery. The first fuel tank and the second fuel tank are symmetrically arranged on both sides of the third fuel tank.

[0007] According to an oil tank assembly provided by the present invention, a plurality of damping plates are spaced apart in the third oil compartment to slow down the oil flow rate and expand the anti-shake frequency range.

[0008] According to an oil tank assembly provided by the present invention, the damping plate is a corrugated damping plate. Furthermore, each of the damping plates has a gap between it and the top and bottom plates of the third oil tank.

[0009] According to an oil tank assembly provided by the present invention, at least one harmonic damping plate is provided in both the first oil tank and the second oil tank. The harmonic damping plate is arranged along the flow direction perpendicular to the oil. Flow holes are formed on the harmonic damping plate.

[0010] According to a fuel tank assembly provided by the present invention, both the first fuel tank and the second fuel tank are provided with a primary harmonic damping plate and a secondary harmonic damping plate. The primary harmonic damping plate and the secondary harmonic damping plate are arranged at intervals.

[0011] According to a fuel tank assembly provided by the present invention, both the first fuel tank and the second fuel tank are provided with a top-mounted anti-surge plate on their lower sides. The top-mounted anti-surge plate is provided with a plurality of flow holes spaced apart.

[0012] According to an oil tank assembly provided by the present invention, a cleaning flange is further provided at the bottom of the auxiliary oil tank. Through holes for threading wires are formed on the auxiliary oil tank.

[0013] According to a fuel tank assembly provided by the present invention, the fuel tank assembly further includes a main fuel tank. The main fuel tank is used to supply fuel to the operating machinery. The auxiliary fuel tank is connected to the main fuel tank to replenish the main fuel tank.

[0014] According to a second aspect of the invention, a working machine is provided, comprising the fuel tank assembly as described above.

[0015] The fuel tank assembly provided by this invention includes an auxiliary fuel tank. The auxiliary fuel tank serves as a backup fuel tank for the operating machinery, storing spare fuel. The main fuel tank is connected to the operating machinery's fuel supply system and is used to directly supply fuel to the operating machinery. The auxiliary fuel tank is connected to the main fuel tank to replenish fuel to the main fuel tank when needed.

[0016] The auxiliary fuel tank is installed on the frame of the working machinery along its width. The auxiliary fuel tank contains a first fuel tank, a second fuel tank, and a third fuel tank. The first, third, and second fuel tanks are arranged sequentially along the width of the working machinery. The first and third fuel tanks are connected, as are the second and third fuel tanks. The volume of the first fuel tank is equal to the volume of the second fuel tank. The flow area of ​​the first fuel tank is equal to the flow area of ​​the second fuel tank. The flow areas of both the first and second fuel tanks are greater than the flow area of ​​the third fuel tank. When the working machinery experiences rolling while traveling in water, the speed at which the oil in the first fuel tank flows through the third fuel tank to the second fuel tank is reduced, or the speed at which the oil in the second fuel tank flows through the third fuel tank to the first fuel tank is reduced. This effectively reduces rolling.

[0017] As described above, the auxiliary fuel tank in the fuel tank assembly provided by this invention not only has a fuel storage function but also reduces the swaying of the working machinery. When the working machinery is traveling in water and is affected by wind and waves, causing it to sway, the auxiliary fuel tank assembly can reduce the swaying, effectively ensuring the work efficiency and personal safety of the workers.

[0018] Furthermore, the working machinery provided by the present invention, since it includes the oil tank assembly as described above, also possesses the advantages described above. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial structural diagram of the auxiliary fuel tank in the fuel tank assembly provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the external structure of the auxiliary fuel tank in the fuel tank assembly provided by the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the auxiliary fuel tank in the fuel tank assembly provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the operating machinery provided by the present invention;

[0024] Figure label:

[0025] 100. Auxiliary oil tank; 200. Operating machinery; 300. First oil tank; 400. Second oil tank; 500. Third oil tank; 501. Damping plate; 601. First-level harmonic damping plate; 602. Second-level harmonic damping plate; 603. Overhead baffle plate; 604. Flow hole; 700. Cleaning flange; 800. Perforation. Detailed Implementation

[0026] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The following is combined Figures 1 to 4 This invention describes a fuel tank assembly and a working machine 200 according to an embodiment of the present invention. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any particular limitation on the present invention.

[0032] An embodiment of the first aspect of the present invention provides a fuel tank assembly, such as Figures 1 to 4 As shown, the fuel tank assembly includes an auxiliary fuel tank 100.

[0033] The auxiliary fuel tank 100 is installed on the frame of the working machinery 200 along its width. The auxiliary fuel tank 100 contains a first fuel compartment 300, a second fuel compartment 400, and a third fuel compartment 500. The first fuel compartment 300 and the second fuel compartment 400 are respectively located on both sides of the third fuel compartment 500 along the width of the working machinery 200. The first fuel compartment 300, the second fuel compartment 400, and the third fuel compartment 500 are interconnected. The volume of the first fuel compartment 300 is equal to the volume of the second fuel compartment 400. The flow area of ​​the first fuel compartment 300 is equal to the flow area of ​​the second fuel compartment 400. The flow area of ​​the third fuel compartment 500 is smaller than the flow area of ​​the first fuel compartment 300.

[0034] The fuel tank assembly provided by this invention includes an auxiliary fuel tank 100. The auxiliary fuel tank 100 is a backup fuel tank for the working machinery 200, and it stores backup fuel. The main fuel tank is connected to the fuel supply system of the working machinery 200 and is used to directly supply fuel to the working machinery 200. The auxiliary fuel tank 100 is connected to the main fuel tank to replenish the main fuel tank when needed.

[0035] The auxiliary fuel tank 100 is installed on the frame of the working machinery 200 along its width. The auxiliary fuel tank 100 contains a first fuel tank 300, a second fuel tank 400, and a third fuel tank 500. The first fuel tank 300, the third fuel tank 500, and the second fuel tank 400 are arranged sequentially along the width of the working machinery 200. The first fuel tank 300 and the third fuel tank 500 are connected, as are the second fuel tank 400 and the third fuel tank 500. The flow area of ​​the first fuel tank 300 and the second fuel tank 400 are both larger than the flow area of ​​the third fuel tank 500. The first fuel tank 300 and the second fuel tank 400 are equivalent to two harmonic oscillation chambers, and the third fuel tank 500 is equivalent to a trough-shaped damping waterway. When the working machinery 200 experiences rolling while traveling in water, the flow rate of the oil in the first oil tank 300 to the second oil tank 400 via the third oil tank 500 is reduced, or the flow rate of the oil in the second oil tank 400 to the first oil tank 300 via the third oil tank 500 is reduced. This effectively reduces rolling.

[0036] As described above, the auxiliary fuel tank 100 in the fuel tank assembly provided by this invention not only has a fuel storage function, but also reduces the sway of the operating machinery 200. When the operating machinery is traveling in water and is affected by wind and waves, causing it to sway, the auxiliary fuel tank assembly can reduce the sway, effectively ensuring the work efficiency and personal safety of the workers.

[0037] In one embodiment of the present invention, the third oil tank 500 is located at the center of the width direction of the operating machinery 200. The first oil tank 300 and the second oil tank 400 are symmetrically arranged on both sides of the third oil tank 500.

[0038] For example, the auxiliary fuel tank 100 includes a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate, and a right side plate. The left side plate, right side plate, and top plate are integrally formed. The left side plate and right side plate are welded to the two end edges of the bottom plate, respectively. The front side plate and rear side plate are welded to the top plate, bottom edge, and the edges of the left and right side plates, respectively.

[0039] The front and rear side plates are identical. Each front or rear side plate includes a primary side plate, a secondary side plate, a tertiary side plate, and a connecting plate. The primary and secondary side plates are located at opposite ends of the tertiary side plate. Both the primary and secondary side plates are welded to the tertiary side plate via the connecting plate, and the primary and secondary side plates are in the same plane, with the plane containing the tertiary side plate located inside the plane containing the primary and secondary side plates. The front and rear side plates are arranged opposite each other. The primary side plates of the front and rear side plates are parallel and flush with each other; the secondary side plates of the front and rear side plates are parallel and flush with each other; the tertiary side plates of the front and rear side plates are parallel and flush with each other. A first oil reservoir 300 is formed between the primary side plates of the front and rear side plates, and a second oil reservoir 400 is formed between the secondary side plates of the front and rear side plates. The third oil tank 500 is located between the third-level side plate of the front side plate and the third-level side plate of the rear side plate. The distance between the first-level side plate of the front side plate and the first-level side plate of the rear side plate is equal to the distance between the second-level side plate of the front side plate and the second-level side plate of the rear side plate, and the distance between the first-level side plate of the front side plate and the first-level side plate of the rear side plate is greater than the distance between the third-level side plate of the front side plate and the third-level side plate of the rear side plate. That is, the flow area of ​​the first oil tank 300 is equal to the flow area of ​​the second oil tank 400; the flow area of ​​the first oil tank 300 is less than the flow area of ​​the third oil tank 500.

[0040] The third oil tank 500 of the auxiliary oil tank 100 is located on the central axis along the length of the working machine 200. The first oil tank 300 and the second oil tank 400 are identical. The first oil tank 300 and the second oil tank 400 are symmetrically arranged on both sides of the third oil tank 500 along the width of the working machine 200. Thus, the first oil tank 300 and the second oil tank 400 are located on both sides of the central axis along the length of the working machine 200.

[0041] In one embodiment of the present invention, a plurality of damping plates 501 are provided at intervals within the third oil tank 500 to slow down the oil flow rate and expand the anti-shaking frequency domain.

[0042] Furthermore, in one embodiment of the present invention, the damping plate 501 is a corrugated damping plate, and there is a gap between each damping plate 501 and the top plate and bottom plate of the third oil tank 500.

[0043] For example, such as Figure 4As shown, in this embodiment, six corrugated damping plates are provided inside the third oil tank 500. Three corrugated damping plates are spaced apart on the side near the first oil tank 300 and the side near the second oil tank 400, respectively. Each corrugated damping plate is connected to the side wall of the third oil tank 500, and a certain distance is provided between the corrugated damping plate and the top and bottom plates of the third oil tank 500 to prevent the formation of dead angles between the damping plate 501 and the wall of the auxiliary oil tank 100, which would lead to the accumulation of impurities. The corrugated damping plate can be fixedly connected to the third-level side plate of the front side plate, or fixedly connected to the third-level side plate of the rear side plate. Alternatively, to improve the connection strength of the corrugated damping plate, it can be fixedly connected to both the third-level side plates of the front and rear side plates simultaneously. The connection method between the corrugated damping plate and the side wall of the third oil tank 500 includes, but is not limited to, welding. Diesel fuel has a high viscosity. By designing the damping plate 501 as a corrugated damping plate, eddy currents are generated in the corrugated damping plate area, thereby increasing damping, slowing down the flow velocity, and increasing the balanced anti-roll frequency range within the auxiliary fuel tank 100. Consequently, the auxiliary fuel tank 100 can still play a role in anti-rolling in low-frequency rolling scenarios. The anti-roll frequency range of this auxiliary fuel tank 100 is more suitable for excavator operation conditions such as slewing and piling.

[0044] It should be noted that the specific number and arrangement of the damping plates 501 can be adjusted according to actual needs, ensuring that the damping effect of the damping plates 501 can maximize the expansion of the anti-sway frequency domain.

[0045] In one embodiment of the present invention, at least one harmonic damping plate is provided in both the first oil tank 300 and the second oil tank 400. The harmonic damping plate is arranged along the flow direction perpendicular to the oil. Flow holes 604 are formed on the harmonic damping plate.

[0046] For example, in one embodiment of the present invention, a primary harmonic damping plate 601 and a secondary harmonic damping plate 602 are provided in both the first oil tank 300 and the second oil tank 400. The primary harmonic damping plate 601 and the secondary harmonic damping plate 602 are arranged at intervals.

[0047] For example, such as Figure 3As shown, a primary harmonic damping plate 601 and a secondary harmonic damping plate 602 are respectively provided in the first oil tank 300 and the second oil tank 400. For example, if the flow direction of the first oil tank 300 and the second oil tank 400 of the auxiliary oil tank 100 is horizontal, then the primary harmonic damping plate 601 and the secondary harmonic damping plate 602 are arranged perpendicular to the flow direction of the first oil tank 300 and the second oil tank 400, that is, the primary harmonic damping plate 601 and the secondary harmonic damping plate 602 are arranged vertically. The primary harmonic damping plate 601 and the secondary harmonic damping plate 602 are spaced apart. Furthermore, multiple flow holes 604 are spaced apart on both the primary harmonic damping plate 601 and the secondary harmonic damping plate 602. In this embodiment, the flow holes 604 are rectangular with rounded corners. The number, shape, and size of the flow holes 604 on the primary harmonic damping plate 601 and the secondary harmonic damping plate 602 can be freely set. In this embodiment, the height of the primary harmonic damping plate 601 is equal to the height of the secondary harmonic damping plate 602, and the width of the primary harmonic damping plate 601 is smaller than the width of the secondary harmonic damping plate 602. Furthermore, the primary harmonic damping plate 601 is located closer to the third oil tank 500, and the secondary harmonic damping plate 602 is located further away from the third oil tank 500. Alternatively, the harmonic damping plate with a smaller damping effect is located closer to the third oil tank 500, and the harmonic damping plate with a relatively larger damping effect is located further away from the third oil tank 500. Both the primary harmonic damping plate 601 and the secondary harmonic damping plate 602 are welded to the top and bottom plates of the auxiliary oil tank 100. The primary harmonic damping plate 601 and the secondary harmonic damping plate 602 can further weaken the energy impact, effectively protect the auxiliary oil tank 100 from excavator overload and overturning caused by water hammer effect, and reduce noise. At the same time, since the damping effect of the primary harmonic damping plate 601 is less than that of the secondary harmonic damping plate 602, when the oil flows from the first oil tank 300 through the third oil tank 500 to the second oil tank 400, or from the second oil tank 400 through the third oil tank 500 to the first oil tank 300, it first passes through the primary harmonic damping plate 601 with a relatively smaller damping effect. This can reduce the impact of the oil on the primary harmonic damping plate 601, ensuring that the impact energy is weakened while effectively protecting the primary harmonic damping plate 601.

[0048] In addition, the damping effect of the primary harmonic damping plate 601 and the secondary harmonic damping plate 602 can be controlled by controlling the number and size of the flow holes on the primary harmonic damping plate 601 and the secondary harmonic damping plate 602.

[0049] It should be noted that the above embodiments are merely illustrative examples of the present invention and do not constitute any limitation on the present invention. That is, the number of harmonic sway damping plates installed in the first oil tank 300 and the second oil tank 400 includes, but is not limited to, two levels, and can be adjusted according to the actual impact energy reduction requirements.

[0050] In one embodiment of the present invention, both the first oil tank 300 and the second oil tank 400 are provided with a top surge baffle 603 on the lower side of their top plates. The top surge baffle 603 is provided with a plurality of flow holes 604 at intervals.

[0051] Continue to refer to Figure 3 The invention describes a method where a top-impact baffle 603 is provided on the underside of the top plate of the first oil tank 300 and the second oil tank 400, respectively. A gap exists between the top-impact baffle 603 and the top plate of either the first oil tank 300 or the second oil tank 400. In one embodiment, the top-impact baffle 603 is arranged parallel to the top plate of the corresponding oil tank. Each top-impact baffle 603 has flow holes 604 spaced apart. In this embodiment, the top-impact baffle 603 is welded to the side wall of the auxiliary oil tank 100. The lower end of the secondary harmonic damping plate 602 is welded to the bottom plate of the auxiliary oil tank 100, and the upper end of the secondary harmonic damping plate 602 passes through the top-impact baffle 603 and is welded to the top plate of the auxiliary oil tank 100. The perforated edges of the secondary harmonic damping plate 602 and the top-impact baffle 603 are welded together to improve the connection reliability of the secondary harmonic damping plate 602 and the top-impact baffle 603. With this structural design, when there is a large amount of oil and the machine 200 shakes severely, the impact effect caused by the oil sloshing can be effectively avoided, thereby effectively protecting the auxiliary oil tank 100 and extending the service life of the oil tank.

[0052] In one embodiment of the present invention, a cleaning flange 700 is further provided at the bottom of the auxiliary oil tank 100. A through hole 800 for threading wires is formed on the auxiliary oil tank 100.

[0053] For example, such as Figure 3 As shown, a cleaning hole is located at the bottom of the auxiliary oil tank 100. A cleaning flange 700 is detachably installed at the cleaning hole. This facilitates the periodic cleaning of impurities inside the auxiliary oil tank 100, ensuring the cleanliness of the oil inside. Furthermore, the auxiliary oil tank 100 is also provided with a through hole 800 for cable routing, facilitating the cabling of the operating machinery 200. In this embodiment, the through hole 800 is located at the third oil reservoir 500.

[0054] In one embodiment of the invention, the fuel tank assembly further includes a main fuel tank. The main fuel tank is used to supply fuel to the operating machinery 200. The auxiliary fuel tank 100 is connected to the main fuel tank to replenish the main fuel tank.

[0055] In the work machinery 200, the main fuel tank is typically located on one side of the machine frame and is not suitable for use as a roll stabilization tank. The main fuel tank is connected to the work machinery 200's fuel supply system and supplies fuel to the machine. The auxiliary fuel tank 100 is typically located at the center of the work machinery 200's frame width and is more suitable for use as a roll stabilization tank. Therefore, the fuel tank assembly not only stores and supplies fuel but also provides roll stabilization, significantly reducing costs. Furthermore, the roll stabilization provided by the auxiliary fuel tank 100 is passive, offering stronger roll stabilization stability compared to active roll stabilization.

[0056] A second aspect of the present invention provides a working machine 200, including the fuel tank assembly as described above.

[0057] For example, such as Figure 4 As shown, the aforementioned work machinery 200 is a tracked amphibious excavator.

[0058] It should be understood that the above embodiments are merely illustrative examples of the present invention and should not be construed as limiting the invention in any way. That is, the above-described operating machinery 200 includes, but is not limited to, tracked amphibious excavators.

[0059] Furthermore, the work machinery 200 provided by the present invention also possesses the advantages described above, since it includes the oil tank assembly as described above.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel tank assembly, characterized in that, Including auxiliary fuel tanks, The auxiliary fuel tank is installed on the frame of the working machine along the width direction. The auxiliary fuel tank is equipped with a first fuel tank, a second fuel tank, and a third fuel tank. The first fuel tank and the second fuel tank are respectively arranged on both sides of the third fuel tank along the width direction of the working machine. The first fuel tank, the second fuel tank, and the third fuel tank are interconnected. The volume of the first fuel tank is equal to the volume of the second fuel tank. The flow area of ​​the first fuel tank is equal to the flow area of ​​the second fuel tank. The flow area of ​​the third fuel tank is smaller than the flow area of ​​the first fuel tank. When the working machinery rolls while traveling in water, the speed at which the oil in the first oil tank flows to the second oil tank through the third oil tank slows down, or the speed at which the oil in the second oil tank flows to the first oil tank through the third oil tank slows down. The third oil tank is located at the center of the width direction of the operating machinery, and the first oil tank and the second oil tank are symmetrically arranged on both sides of the third oil tank.

2. The fuel tank assembly according to claim 1, characterized in that, The third oil tank is equipped with multiple damping plates at intervals to slow down the oil flow rate and expand the anti-shaking frequency range.

3. The fuel tank assembly according to claim 2, characterized in that, The damping plate is a corrugated damping plate, and each damping plate has a gap with the top plate and bottom plate of the third oil tank.

4. The fuel tank assembly according to claim 1, characterized in that, Both the first oil tank and the second oil tank are equipped with at least one harmonic damping plate, which is arranged along the flow direction perpendicular to the oil, and has flow holes.

5. The fuel tank assembly according to claim 4, characterized in that, Both the first oil tank and the second oil tank are equipped with a primary harmonic damping plate and a secondary harmonic damping plate, which are spaced apart.

6. The fuel tank assembly according to claim 4, characterized in that, Both the first oil tank and the second oil tank are provided with a top plate with a wave deflector on the underside, and the wave deflector is provided with a plurality of flow holes at intervals.

7. The fuel tank assembly according to claim 1, characterized in that, The bottom of the auxiliary oil tank is also provided with a cleaning flange, and the auxiliary oil tank has through holes for threading wires.

8. The fuel tank assembly according to claim 1, characterized in that, The fuel tank assembly also includes a main fuel tank for supplying fuel to the operating machinery, and an auxiliary fuel tank connected to the main fuel tank for replenishing the main fuel tank.

9. A type of operating machinery, characterized in that, Includes the fuel tank assembly according to any one of claims 1 to 8.

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