Oil tank and working machine

Abstract

The utility model relates to the technical field of operation machinery, and provides an oil tank and operation machinery, the oil tank comprises an oil tank body and a flitch plate part, the oil tank body is provided with a target side plate, and the target side plate faces a machine body; the at least one flitch plate part is arranged at the transverse target end of the target side plate, the flitch plate part is provided with a first end and a second end in the vertical direction of the target side plate, and the edge of the first end and the edge of the second end of the flitch plate part are obliquely arranged relative to the transverse direction and the vertical direction of the target side plate. The distance between the edge of the first end of the flitch part and the edge of the second end of the flitch part is gradually increased in the direction from the target end of the target side plate to the opposite end, and all the edges of the flitch part are welded and fixed to the target side plate. According to the arrangement, the edges of the two ends of the flitch plate part are arranged to be inclined, the inclined welding seam is formed between the flitch plate part and the target side plate, the stress condition of the welding seam between the flitch plate part and the target side plate is improved, and the problem that in the prior art, the welding seam between the flitch plate part and the fuel oil tank is prone to cracking is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of working machinery, in particular to a fuel tank and a working machinery. Background Art

[0002] The fuel tank is an important structural part of construction machinery and is a device for storing fuel in the engine of construction machinery. Taking a loader as an example, its fuel tank 1' is usually fixed on one side of the body in a side-mounted assembly manner. During specific installation, a patch plate 2' is welded and fixed on the side plate of the fuel tank 1', and the patch plate 2' is fixed on the body through hinges and bolt fasteners.

[0003] Generally, the patch plate 2' is set in a shape similar to a rectangle, such as Figure 1 shown, and the edge of the patch plate is welded and fixed to the fuel tank 1'. During the operation of the whole vehicle, all the impacts and alternating loads received by the fuel tank 1' are transmitted from the whole vehicle frame to this patch plate 2'. The vibration impact in the front-back direction is relatively intense, and it is easy to crack at the position indicated by the arrow in Figure 1 , thus resulting in the problem of fuel leakage and failure of the fuel tank.

[0004] Therefore, how to solve the problem that the weld between the patch plate and the fuel tank in the prior art is prone to cracking has become an important technical problem to be solved by those skilled in the art. Content of the Utility Model

[0005] The utility model provides a fuel tank and a working machinery to solve the defect that the weld between the patch plate and the fuel tank in the prior art is prone to cracking.

[0006] The utility model provides a fuel tank, including:

[0007] A fuel tank body having a target side plate adapted to face the body;

[0008] At least one patch plate part is arranged at the target end in the transverse direction of the target side plate. Along the vertical direction of the target side plate, the patch plate part has a first end and a second end. The edges of the first end and the second end of the patch plate part are both inclined with respect to the transverse direction and the vertical direction of the target side plate. The distance between the edge of the first end and the edge of the second end of the patch plate part gradually increases along the direction from the target end to the opposite end of the target side plate. Each edge of the patch plate part is welded and fixed to the target side plate.

[0009] According to a fuel tank provided by the utility model, at least two patch plate parts are provided, and each patch plate part is arranged separately. At least one of the patch plate parts is a first patch plate part, and at least one of the patch plate parts is a second patch plate part;

[0010] The first attaching plate portion is disposed at a first end in the transverse direction of the target side plate. The first attaching plate portion is adapted to be connected to the machine body through a hinge assembly. The hinge assembly includes a connecting shaft and a fixing plate. The axis of the connecting shaft is disposed along the vertical direction of the target side plate, and the fixing plate is fixedly connected to the first attaching plate portion;

[0011] The second attaching plate portion is disposed at a second end in the transverse direction of the target side plate. The second attaching plate portion is adapted to be connected to the machine body through a fastener.

[0012] According to a fuel tank provided by the present invention, there are at least two first attaching plate portions. Each of the first attaching plate portions is spaced apart along the vertical direction of the target side plate. One hinge assembly is correspondingly provided for each first attaching plate portion, and the axes of the connecting shafts of the hinge assemblies coincide.

[0013] According to a fuel tank provided by the present invention, at least two hinge assemblies are correspondingly provided for each first attaching plate portion. Each of the hinge assemblies is spaced apart along the vertical direction of the target side plate, and the axes of the connecting shafts of the hinge assemblies coincide;

[0014] A first avoidance hole is provided on the first attaching plate portion. The first avoidance hole is located between any two adjacent hinge assemblies. A weld seam extending along the circumferential direction of the first avoidance hole is formed between the first attaching plate portion and the target side plate.

[0015] According to a fuel tank provided by the present invention, the first avoidance hole is an oval hole, and the length direction of the first avoidance hole is the same as the vertical direction of the target side plate.

[0016] According to a fuel tank provided by the present invention, it further includes:

[0017] A connecting member. A second connecting hole is provided on the first attaching plate portion, and a first connecting hole is provided on the fixing plate. The connecting member passes through the first connecting hole and the second connecting hole and is fixedly connected to the first attaching plate portion together.

[0018] According to a fuel tank provided by the present invention, the fixing plate includes a fixing plate portion for connecting to the first attaching plate portion and a connecting portion for connecting to the connecting shaft. The connecting portion and the fixing plate portion are connected as an integral structure. Along the axial direction of the connecting shaft, the length dimension of the connecting portion is smaller than the length dimension of the fixing plate portion;

[0019] Along the direction perpendicular to the target side plate, the projection area of the fixing plate portion is completely located within the projection area of the first attaching plate portion. The edge of the fixing plate portion does not coincide with the edge of the first attaching plate portion at all, and the edge of the fixing plate portion is full-welded and fixed to the first attaching plate portion.

[0020] According to a fuel tank provided by the present utility model, a reinforcing rib plate is disposed between the second attaching plate portion and the fuel tank body, and both the second attaching plate portion and the fuel tank body are fixedly connected to the reinforcing rib plate;

[0021] And / or, a second avoiding hole is disposed on the second attaching plate portion, and a weld seam extending along the circumferential direction of the second avoiding hole is formed between the second attaching plate portion and the target side plate.

[0022] According to a fuel tank provided by the present utility model, each of the attaching plate portions is connected to form an integral structure, a third avoiding hole is disposed on the integral structure, and a weld seam extending along the circumferential direction of the third avoiding hole is formed between the integral structure and the target side plate.

[0023] The present utility model further provides a working machine, including the above-mentioned fuel tank.

[0024] The fuel tank provided by the present utility model includes a fuel tank body and at least one attaching plate portion. The fuel tank body has a target side plate, and when the fuel tank body is installed on the machine body, the target side plate faces the machine body. The attaching plate portion is disposed at one end in the transverse direction of the target side plate, and this end is called the target end of the target side plate. Each edge of the attaching plate portion is fixedly welded to the target side plate. Along the vertical direction of the target side plate, the attaching plate portion has a first end and a second end. The edges of the first end of the attaching plate portion and the edges of the second end of the attaching plate portion are both inclined with respect to the transverse direction of the target side plate and the vertical direction of the target side plate, and the distance between the edge of the first end of the attaching plate portion and the edge of the second end of the attaching plate portion gradually increases along the direction from the target end to the opposite end of the target side plate. That is to say, each position of the circumference of the attaching plate portion is fixedly welded to the target side plate, and both the first end and the second end of the attaching plate portion form inclined weld seams, which improves the strength at the position of the weld seam close to the target end and the ability to resist vibration and impact in the front and back directions, reduces the strength risk of the weld seam end points, and moreover, when the transverse dimension of the attaching plate portion along the target side plate is certain, compared with the weld seam extending along the transverse direction of the target side plate in the prior art, the lengths of the weld seams at the first end and the second end of the attaching plate portion in the present utility model are increased, the connection between the attaching plate portion and the target side plate is more stable, and the problem of weld seam cracking between the attaching plate portion and the fuel tank can be effectively avoided.

[0025] Further, in the working machine provided by the present utility model, due to having the fuel tank as described above, it also has various advantages as described above. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of a patch panel on a fuel tank in the prior art.

[0028] Figure 2 It is a schematic diagram of the connection structure between the fuel tank and the body provided by the present utility model from one perspective.

[0029] Figure 3 It is a schematic diagram of the connection structure between the fuel tank and the body provided by the present utility model from another perspective.

[0030] Figure 4 It is a schematic structural diagram of the fuel tank provided by the present utility model Figure 1 (The thin dashed line in the figure represents the demarcation line between the connecting part and the fixed plate part).

[0031] Figure 5 It is Figure 4 A schematic diagram of the weld position on the fuel tank shown (both the thick solid line and the thick dashed line in the figure represent welds, and the thin dashed line represents the demarcation line between the connecting part and the fixed plate part).

[0032] Figure 6 It is a schematic structural diagram of the fuel tank provided by the present utility model Figure 2 .

[0033] Figure 7 It is a schematic structural diagram of the fuel tank provided by the present utility model Figure 3 .

[0034] Figure 8 It is a schematic structural diagram of the fuel tank provided by the present utility model Figure 4 .

[0035] Figure 9 It is a schematic structural diagram of the fuel tank provided by the present utility model Figure 5 .

[0036] Figure 10 It is a schematic structural diagram of the reinforcing rib plate provided by the present utility model.

[0037] Reference numerals:

[0038] 1', fuel tank; 2', patch panel; 1, tank body; 2, target side plate; 3, body; 5, first patch panel part; 6, second patch panel part; 7, hinge assembly; 8, connecting shaft; 9, fixing plate; 10, fastener; 11, first avoidance hole; 12, connecting piece; 13, connecting part; 14, reinforcing rib plate; 15, second avoidance hole; 16, third avoidance hole; 17, fixing plate part. Detailed implementation mode

[0039] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the drawings in the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0040] The following combines Figures 2 to 10 to describe the fuel tank of the present utility model. When the fuel tank is installed on the body 3, the first end in the horizontal direction of the fuel tank is connected to the body 3 through two hinge assemblies 7. The axes of the connecting shafts 8 of the two hinge assemblies 7 coincide and are arranged vertically along the tank body 1. The two hinge assemblies 7 are distributed at intervals vertically along the tank body 1. The second end in the horizontal direction of the tank body 1 is connected to the body 3 through fasteners 10 such as bolts.

[0041] As Figures 2 to 10 shown, the fuel tank provided in the embodiment of the present utility model includes a tank body 1 and at least one patch panel part.

[0042] Specifically, the tank body 1 has a target side plate 2. When the tank body 1 is installed on the body 3, the target side plate 2 faces the body 3.

[0043] The patch panel part is arranged on the target side plate 2 of the tank body 1 and is located at the target end in the horizontal direction of the target side plate 2. Specifically, the position of the patch panel part on the target side plate 2 is determined according to the positions of the hinge assembly 7 and the bolt fastener 10. The hinge assembly 7 is arranged at the first end in the horizontal direction of the tank body 1, and the patch panel part corresponding to the hinge assembly 7 is arranged at the first end in the horizontal direction of the target side plate 2. For the patch panel part corresponding to the hinge assembly 7, the first end in the horizontal direction of the target side plate 2 is the target end. The bolt fastener 10 is arranged at the second end in the horizontal direction of the tank body 1, and the patch panel part corresponding to the bolt fastener 10 is arranged at the second end in the horizontal direction of the target side plate 2. For the patch panel part corresponding to the bolt fastener 10, the second end in the horizontal direction of the target side plate 2 is the target end.

[0044] Weld and fix each edge of the patch board part to the target side plate 2. Specifically, full welding can be performed on the gap between the edge of the patch board part and the target side plate 2 to improve the connection strength between the patch board part and the target side plate 2; alternatively, full welding can be performed on the gaps at the key parts between the edge of the patch board part and the target side plate 2, and intermittent welding can be performed on the remaining parts, which can be specifically determined according to the size of the patch board part and the conditions of the welding process.

[0045] Along the vertical direction of the target side plate 2, the patch board part has a first end and a second end. The edges of the first end of the patch board part and the edges of the second end of the patch board part are both inclined with respect to the horizontal direction of the target side plate 2 and the vertical direction of the target side plate 2, and the distance between the edges of the first end of the patch board part and the edges of the second end of the patch board part gradually increases along the direction from the target end to the opposite end of the target side plate 2.

[0046] That is to say, each edge of the patch board part is welded and fixed to the target side plate 2, and the first end and the second end of the patch board part both form inclined welds, which improves the strength at the position where the weld is close to the target end and the ability to resist vibration and impact in the front-back direction, reduces the strength risk at the weld end points, and in the case where the lateral dimension of the patch board part along the target side plate 2 is certain, compared with the weld extending horizontally along the target side plate 2 in the prior art, the lengths of the welds at the first end and the second end of the patch board part in the embodiment of the present invention are increased, and the connection between the patch board part and the target side plate 2 is more stable, and the problem of weld cracking between the patch board part and the fuel tank can be effectively avoided.

[0047] It should be noted that the inclination angle of the edge of the first end of the patch board part and the edge of the second end of the patch board part with respect to the horizontal direction of the target side plate 2 and the inclination angle with respect to the vertical direction of the target side plate 2 need to be determined according to the stress distribution characteristics at the connection position between the patch board part and the fuel tank body 1. The stress distribution characteristics at the connection position between the patch board part and the fuel tank body 1 can be obtained through finite element simulation analysis, which will not be specifically elaborated here.

[0048] In the embodiment of the present invention, at least two patch board parts are provided, and the patch board parts are separately arranged. At least one patch board part is called the first patch board part 5, and at least one patch board part is called the second patch board part 6. Refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 8 .

[0049] The first patch board part 5 is arranged at the first end in the horizontal direction of the target side plate 2, and the first patch board part 5 is used to be connected to the machine body 3 through the hinge assembly 7. The hinge assembly 7 includes a connecting shaft 8 and a fixing plate 9, the axis of the connecting shaft 8 is arranged along the vertical direction of the target side plate 2, and the fixing plate 9 is fixedly connected to the first patch board part 5.

[0050] The second attaching plate portion 6 is disposed at the second lateral end of the target side plate 2, and the second attaching plate portion 6 is used to be connected to the machine body 3 through the fastener 10.

[0051] In some embodiments, at least two first attaching plate portions 5 are provided, and the respective first attaching plate portions 5 are spaced apart from each other along the vertical direction of the target side plate 2. One hinge assembly 7 is correspondingly provided for each first attaching plate portion 5, and the axes of the connecting shafts 8 of the respective hinge assemblies 7 coincide.

[0052] With such an arrangement, at least two first attaching plate portions 5 and hinge assemblies 7 are provided at the first lateral end of the fuel tank body 1, so that the first end of the fuel tank body 1 is connected to the machine body 3 through at least two hinge assemblies 7.

[0053] In other embodiments, only one first attaching plate portion 5 is provided, and at least two hinge assemblies 7 are correspondingly provided for each first attaching plate portion 5. The respective hinge assemblies 7 are spaced apart from each other along the vertical direction of the target side plate 2, and the axes of the connecting shafts 8 of the respective hinge assemblies 7 coincide. That is to say, the first end of the fuel tank body 1 is connected to the machine body 3 through one first attaching plate portion 5 and at least two hinge assemblies 7.

[0054] At this time, a first avoidance hole 11 is provided on the first attaching plate portion 5, and the first avoidance hole 11 is located between any two adjacent hinge assemblies 7, as Figure 6 shown. A weld seam extending circumferentially along the first avoidance hole 11 is formed between the first attaching plate portion 5 and the target side plate 2. That is to say, full penetration welding is performed at the position where the side wall of the first avoidance hole 11 is butt-jointed with the target side plate 2.

[0055] By welding at this position, the connection strength between the first attaching plate portion 5 and the target side plate 2 of the fuel tank body 1 can be enhanced, the relative stability between the first attaching plate portion 5 and the fuel tank body 1 can be improved, and the risk of cracking of the weld seam between the first attaching plate portion 5 and the fuel tank body 1 can be reduced.

[0056] In a specific embodiment, the first avoidance hole 11 is provided as an oblong hole, and the length direction of the first avoidance hole 11 is the same as the vertical direction of the target side plate 2.

[0057] In some embodiments, the fixing plate 9 of the hinge assembly 7 is connected to the first attaching plate portion 5 in an assembled manner.

[0058] Specifically, the fuel tank further includes a connecting member 12, and the connecting member 12 connects the first attaching plate portion 5 and the fixing plate 9 of the hinge assembly 7 together, as Figure 8 shown.

[0059] A second connection hole can be provided on the first patch board part 5, and a first connection hole can be provided on the fixing plate 9. The connecting member 12 is passed through the first connection hole and the second connection hole to fixedly connect the connecting member 12 with the first patch board part 5, thereby realizing the fixed connection between the first patch board part 5 and the fixing plate 9.

[0060] In a specific embodiment, the second connection hole can be set as a threaded hole, and a bolt or a screw can be selected as the connecting member 12. After the connecting member 12 passes through the first connection hole, it is threadedly connected with the threaded hole, and thus the first patch board part 5 and the fixing plate 9 can be fixedly connected together.

[0061] Alternatively, the second connection hole can be set as a clearance hole, and the connecting member 12 is fixedly welded to the first patch board part 5 by welding.

[0062] The above-mentioned connecting member 12 can be, but is not limited to, a bolt or a screw.

[0063] In some other embodiments, the fixing plate 9 of the hinge assembly 7 is fixedly welded to the first patch board part 5.

[0064] At this time, the fixing plate 9 includes a fixing plate part 17 and a connecting part 13. The fixing plate part 17 is used for connecting with the first patch board part 5, and the connecting part 13 is located on the side of the fixing plate part 17 close to the connecting shaft 8. The connecting part 13 is used for connecting with the connecting shaft 8. The connecting part 13 and the fixing plate part 17 are connected as an integral structure. Along the axial direction of the connecting shaft 8, the length dimension of the connecting part 13 is smaller than the length dimension of the fixing plate part 17.

[0065] Along the direction perpendicular to the target side plate 2, the projection area of the fixing plate part 17 is completely located within the projection area of the first patch board part 5. The edge of the fixing plate part 17 does not coincide with the edge of the first patch board part 5 at all, and the edge of the fixing plate part 17 is fully welded and fixed to the first patch board part 5. Refer to Figure 5 , and welding and fixing are performed between the left vertical edge of the fixing plate part 17 and the first patch board part 5 to form a weld along the vertical direction of the target side plate 2, which improves the connection strength between the fixing plate part 17 and the first patch board part 5.

[0066] In the embodiment of the present utility model, a reinforcing rib plate 14 is provided between the second patch board part 6 and the fuel tank body 1. Both the second patch board part 6 and the fuel tank body 1 are fixedly welded to the reinforcing rib plate 14, as Figure 10 shown. The second patch board part 6 is partially suspended relative to the fuel tank body 1. A 90-degree angle is formed between the suspended part of the second patch board part 6 relative to the fuel tank body 1 and the fuel tank body 1. The reinforcing rib plate 14 is arranged in this 90-degree space. By using the reinforcing rib plate 14 to support the second patch board part 6, the stability of the second patch board part 6 can be improved, and the risk of cracking of the weld between the second patch board part 6 and the fuel tank body 1 can be reduced.

[0067] In this embodiment, a second avoidance hole 15 is provided on the second attaching plate portion 6, and a weld seam extending circumferentially along the second avoidance hole 15 is formed between the second attaching plate portion 6 and the target side plate 2, as Figure 8 shown. That is to say, full penetration welding is performed at the position where the side wall of the second avoidance hole 15 is butted against the target side plate 2. By welding at this position, the connection strength between the second attaching plate portion 6 and the target side plate 2 of the fuel tank body 1 can be enhanced, the relative stability between the second attaching plate portion 6 and the fuel tank body 1 can be improved, and the risk of cracking of the weld seam between the second attaching plate portion 6 and the fuel tank body 1 can be reduced.

[0068] In the embodiment of the present utility model, the above-mentioned respective attaching plate portions can be connected to form an integral structure, that is, the first attaching plate portion 5 and the second attaching plate portion 6 are processed on a plate with a relatively large size. The edge position of the integral structure is welded and fixed to the target side plate 2, referring to Figure 9 .

[0069] It should be noted that Figure 9 includes a first attaching plate portion 5 and a second attaching plate portion 6, and the first attaching plate portion 5 correspondingly connects two hinge assemblies 7. Any one of the first attaching plate portion 5 and the second attaching plate portion 6 itself meets the requirement that the distance between the edge of its first end and the edge of the second section gradually increases in the direction from the target end to the opposite end of the target side plate 2. The shape of the transition connection part between the first attaching plate portion 5 and the second attaching plate portion 6 is not specifically limited as long as it can connect the first attaching plate portion 5 and the second attaching plate portion 6 into an integral structure.

[0070] A third avoidance hole 16 is provided on the above-mentioned integral structure, and a weld seam extending circumferentially along the third avoidance hole 16 is formed between the integral structure and the target side plate 2, enhancing the connection strength between the integral structure and the target side plate 2 of the fuel tank body 1 and improving the relative stability between the integral structure and the fuel tank body 1.

[0071] On the other hand, the embodiment of the present utility model also provides a working machine, including the fuel tank provided in any one of the above embodiments. The welding position of the fuel tank provided in the above embodiment is not easily cracked. Therefore, the working machine provided in this embodiment has the advantages of safe use and high reliability. The derivation process of the beneficial effects of the working machine in the embodiment of the present utility model is substantially similar to the derivation process of the beneficial effects of the above fuel tank, so it will not be elaborated here.

[0072] In the embodiment of the present utility model, the type of the working machine is not limited. For example, the working machine can be an excavator, a crane, a loader, etc. In other words, as long as the working machine can use the fuel tank in the embodiment of the present utility model.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fuel tank, characterized in that, Including: A fuel tank body (1) having a target side plate (2) adapted to face the body (3); At least one patch plate portion provided at a target end in the transverse direction of the target side plate (2). Along the vertical direction of the target side plate (2), the patch plate portion has a first end and a second end. The edges of the first end and the second end of the patch plate portion are both inclined with respect to the transverse direction and the vertical direction of the target side plate (2). The distance between the edge of the first end and the edge of the second end of the patch plate portion gradually increases in the direction from the target end to the opposite end of the target side plate (2). Each edge of the patch plate portion is fixedly welded to the target side plate (2).

2. The fuel tank according to claim 1, characterized in that, There are at least two of the patch plate portions, and the patch plate portions are separately arranged. At least one of the patch plate portions is a first patch plate portion (5), and at least one of the patch plate portions is a second patch plate portion (6); The first patch plate portion (5) is provided at the first end in the transverse direction of the target side plate (2). The first patch plate portion (5) is adapted to be connected to the body (3) through a hinge assembly (7). The hinge assembly (7) includes a connecting shaft (8) and a fixing plate (9). The axis of the connecting shaft (8) is arranged along the vertical direction of the target side plate (2), and the fixing plate (9) is fixedly connected to the first patch plate portion (5); The second patch plate portion (6) is provided at the second end in the transverse direction of the target side plate (2). The second patch plate portion (6) is adapted to be connected to the body (3) through a fastener (10).

3. The fuel tank according to claim 2, characterized in that, There are at least two of the first patch plate portions (5), and the first patch plate portions (5) are spaced apart along the vertical direction of the target side plate (2). One hinge assembly (7) is correspondingly provided for each of the first patch plate portions (5), and the axes of the connecting shafts (8) of the hinge assemblies (7) coincide.

4. The fuel tank according to claim 2, characterized in that, At least two hinge assemblies (7) are correspondingly provided for each of the first patch plate portions (5), and the hinge assemblies (7) are spaced apart along the vertical direction of the target side plate (2). The axes of the connecting shafts (8) of the hinge assemblies (7) coincide; A first avoidance hole (11) is provided on the first patch plate portion (5). The first avoidance hole (11) is located between any two adjacent hinge assemblies (7). A weld seam extending along the circumference of the first avoidance hole (11) is formed between the first patch plate portion (5) and the target side plate (2).

5. The fuel tank according to claim 4, wherein The first avoidance hole (11) is an oval hole, and the length direction of the first avoidance hole (11) is the same as the vertical direction of the target side plate (2).

6. The fuel tank according to any one of claims 2-5, characterized in that, Further including: A connecting member (12). A second connecting hole is provided on the first patch plate portion (5), and a first connecting hole is provided on the fixing plate (9). The connecting member (12) passes through the first connecting hole and the second connecting hole and is fixedly connected to the first patch plate portion (5).

7. The fuel tank according to any one of claims 2-5, characterized in that, The fixed plate (9) includes a fixed plate portion (17) for connecting with the first pasting plate portion (5) and a connecting portion (13) for connecting with the connecting shaft (8). The connecting portion (13) and the fixed plate portion (17) are connected as an integral structure. Along the axial direction of the connecting shaft (8), the length dimension of the connecting portion (13) is smaller than the length dimension of the fixed plate portion (17). Along the direction perpendicular to the target side plate (2), the projection area of the fixed plate portion (17) is completely located within the projection area of the first pasting plate portion (5). The edge of the fixed plate portion (17) does not coincide with the edge of the first pasting plate portion (5) at all, and the edge of the fixed plate portion (17) is fixedly welded to the first pasting plate portion (5) completely.

8. The fuel tank according to any one of claims 2-5, characterized in that, A reinforcing rib plate (14) is arranged between the second pasting plate portion (6) and the fuel tank body (1). Both the second pasting plate portion (6) and the fuel tank body (1) are fixedly connected to the reinforcing rib plate (14). And / or, a second avoidance hole (15) is arranged on the second pasting plate portion (6), and a weld seam extending circumferentially along the second avoidance hole (15) is formed between the second pasting plate portion (6) and the target side plate (2).

9. The fuel tank according to claim 1, characterized in that, Each of the pasting plate portions is connected to form an integral structure. A third avoidance hole (16) is arranged on the integral structure, and a weld seam extending circumferentially along the third avoidance hole (16) is formed between the integral structure and the target side plate (2).

10. An earthmoving machine, characterized in that, It includes the fuel tank according to any one of claims 1 to 9.

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