Fuel tank and engineering machinery

Abstract

The utility model belongs to the technical field of engineering machinery, and discloses a fuel tank and engineering machinery. The fuel tank comprises a tank body and a connecting structure. The connecting structure comprises a connecting support and a connecting piece, the connecting support is arranged in the box body, the box body is provided with a first through hole, and the connecting piece is arranged on the connecting support; the connecting piece extends out of the first through hole to be connected with a frame of the engineering machine. According to the fuel tank, the connecting support is arranged in the tank body, so that the connecting support does not occupy the space outside the tank body, the size of the tank body can be increased, and the situation that the connecting strength is affected due to collision of the connecting support can be avoided; in addition, the connecting support is arranged in the box body, the frame is attached to the surface of the box body and connected with the surface of the box body through the connecting piece, the surface of the box body is a flat plane, the problem that in the prior art, mounting supports cannot be coplanar can be solved without a shock pad, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field especially relates to a fuel tank and engineering machinery. BACKGROUND

[0002] The rear fuel tank of the existing engineering machinery such as loader is usually provided with mounting support on the both sides outer wall of the width direction of fuel tank body, and the frame of loader is connected to mounting support by bolt. The rear fuel tank by setting mounting support outside fuel tank body has the following shortcomings: 1) the width of fuel tank body is limited, that is, a part of the volume of fuel tank body must be sacrificed to meet the installation of mounting support, which reduces the effective volume of fuel tank body; 2) the mounting support protruding on the outer wall of fuel tank body also has the risk of collision; 3) the support surface of mounting support is difficult to be coplanar, in order to ensure installation, a shock pad with appropriate thickness needs to be installed between each mounting support and frame, which increases the cost. SUMMARY

[0003] The utility model discloses a fuel tank and engineering machinery, which can improve the volume of the tank body and reduce the cost.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] The fuel tank is arranged on the engineering machinery, and the fuel tank comprises:

[0006] A tank body;

[0007] A connecting structure comprising a connecting support and a connecting piece, the connecting support is arranged in the tank body, the connecting piece is arranged on the connecting support, the tank body is provided with a first through hole, the connecting piece is extended out of the tank body from the first through hole, and the connecting piece is used for connecting with the frame of the engineering machinery.

[0008] As an optional scheme, the top plate of the tank body is provided with the first through hole, and the bottom plate of the tank body is provided with a second through hole;

[0009] The connecting support comprises a cylinder and a connecting block, the cylinder has a central through hole, the connecting block is fixedly arranged at one end of the cylinder and is in sealing connection with the first through hole, the cylinder is arranged in the second through hole, and the outer wall of the cylinder is in sealing connection with the second through hole, one end of the central through hole away from the connecting block is in communication with the outside, the connecting block is provided with a mounting hole in communication with the central through hole, and one part of the connecting piece is limited in the central through hole, and the other part is arranged in the mounting hole and extended out of the tank body from the first through hole to be connected with the frame.

[0010] As an alternative, the end face of the connecting block away from the cylinder is provided with a protrusion, which is sealed within the first through hole.

[0011] As an alternative, the protrusion is welded to the inner wall of the first through hole.

[0012] As an optional solution, a connecting plate is provided on the outside of the base plate, the connecting plate is provided with a second through hole, and a third through hole is provided on the base plate at a position corresponding to the second through hole. The end of the cylinder away from the connecting block passes through the third through hole and protrudes from the base plate, and the part of the cylinder protruding from the base plate is sealed in the second through hole.

[0013] As an alternative, the connecting plate is welded to the base plate, and the portion of the cylinder protruding from the base plate is welded to the inner wall of the second through hole.

[0014] As an alternative, the connector includes a bolt and a nut, the bolt passing through both the mounting hole and the fourth through hole of the frame, and the nut being screwed onto the bolt and pressing against the frame.

[0015] As an optional solution, multiple connection structures are provided, and the multiple connection structures are divided into two groups. The two groups of connection structures are distributed at intervals along the width direction of the frame, and the multiple connection structures in each group are distributed at intervals along the length direction of the frame.

[0016] As an alternative, the housing includes a main body and extensions disposed on both sides of the main body along the width direction of the frame, with two sets of the connecting structures respectively disposed on the extensions on both sides.

[0017] Construction machinery includes a frame and a fuel tank as described in any of the above embodiments, wherein the connecting bracket is disposed inside the tank, and the connecting member is disposed on the connecting bracket and extends out of the tank through the first through hole to connect with the frame.

[0018] The beneficial effects of this utility model are:

[0019] The fuel tank provided by this utility model, by setting the connecting bracket inside the tank body, allows the connecting bracket to not occupy space outside the tank body, thereby increasing the size and volume of the tank body, and also preventing the connecting bracket from being damaged by impacts, thus affecting the connection strength. In addition, with the connecting bracket set inside the tank body, the vehicle frame and the tank body surface are attached to each other and connected by connectors, making the tank body surface a flat plane. This eliminates the need for shock-absorbing pads, solving the problem of non-coplanar mounting brackets in the prior art, and reducing costs. Attached Figure Description

[0020] Fig. 1 This is a first structural schematic diagram of the fuel tank provided in this embodiment of the utility model;

[0021] Fig. 2 This is a schematic diagram of the connecting bracket involved in the embodiment of this utility model;

[0022] Fig. 3 This is a schematic diagram of the second structure of the fuel tank provided in an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Box body; 11. Main body; 12. Extension;

[0025] 2. Connecting bracket; 21. Cylinder body; 211. Central through hole; 22. Connecting block; 221. Mounting hole; 222. Protrusion;

[0026] 3. Connecting parts; 31. Bolts; 32. Nuts;

[0027] 4. Connect the mounting plate. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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 includes the first feature 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.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figs. 1-3 As shown, this utility model embodiment provides a fuel tank for use in engineering machinery, which includes a tank body 1 and a connecting structure.

[0033] The connection structure includes a connecting bracket 2 and a connector 3. The connecting bracket 2 is located inside the housing 1, and the housing 1 has a first through hole. The connector 3 is located on the connecting bracket 2 and extends out of the housing 1 through the first through hole. The connector 3 is used to connect with the frame of the construction machinery.

[0034] By placing the connecting bracket 2 inside the tank body 1, the connecting bracket 2 does not occupy space outside the tank body 1, which increases the size of the tank body 1 and also prevents the connecting bracket 2 from being bumped and affecting the connection strength. In addition, with the connecting bracket 2 placed inside the tank body 1, the vehicle frame and the surface of the tank body 1 are attached and connected by the connector 3, so the surface of the tank body 1 is a flat plane. This solves the problem of the mounting bracket not being coplanar in the prior art without the need for shock-absorbing pads, and reduces costs.

[0035] Optionally, the connector 3 includes a bolt 31 and a nut 32. The connecting bracket 2 is provided with a mounting hole 221. The bolt 31 passes through the mounting hole 221 and extends out of the housing 1 through the first through hole, and at the same time passes through the fourth through hole of the frame. The nut 32 is screwed onto the bolt 31 and presses against the frame. The housing 1 is connected to the frame by the cooperation of the bolt 31 and the nut 32. The structure is simple and the operation is convenient.

[0036] Optionally, the top plate of the housing 1 is provided with a first through hole, and the bottom plate of the housing 1 is provided with a second through hole; the connecting bracket 2 includes a cylindrical body 21 and a connecting block 22 fixedly connected to each other. The cylindrical body 21 has a central through hole 211. The connecting block 22 is fixedly disposed at one end of the cylindrical body 21 and sealed to the first through hole of the top plate. The cylindrical body 21 passes through the second through hole of the bottom plate, and the outer wall of the cylindrical body 21 is sealed to the second through hole. The end of the central through hole 211 away from the connecting block 22 is connected to the second through hole. The external connection is provided. The connecting block 22 is provided with a mounting hole 221 that communicates with the central through hole 211 of the cylinder 21. The bolt 31 passes through the central through hole 211 of the cylinder 21 and is installed in the mounting hole 221 and the first through hole. The nut of the bolt 31 is limited to the central through hole 211. The stud of the bolt 31 passes through the mounting hole 221 and protrudes from the top plate. The part of the stud protruding from the top plate also passes through the fourth through hole of the frame. The nut 32 is screwed onto the stud to realize the installation of the box 1.

[0037] In this embodiment, the cylinder 21 and the connecting block 22 are welded together. The welding must be full to ensure the seal between the cylinder 21 and the connecting block 22, thereby preventing fuel leakage.

[0038] Optionally, the end face of the connecting block 22 away from the cylinder 21 is provided with a protrusion 222, which is sealed in the first through hole, making it convenient to install the connecting block 22 and the top plate.

[0039] Furthermore, a connecting plate 4 is provided on the outside of the base plate, and the connecting plate 4 is provided with a second through hole. A third through hole is provided on the base plate at the position corresponding to the second through hole. The end of the cylinder 21 away from the connecting block 22 passes through the third through hole and protrudes from the base plate. The diameter of the second through hole can be designed to match the diameter of the cylinder 21. The diameter of the third through hole can be larger than the outer diameter of the cylinder 21 to facilitate the installation of the cylinder 21. That is, the second through hole and the cylinder 21 can be set as a clearance fit. The connecting plate 4 is fixedly set on the base plate so that the connecting plate 4 can cover the gap between the third through hole and the cylinder 21. The part of the cylinder 21 protruding from the base plate is sealed in the second through hole.

[0040] In this embodiment, in order to achieve a sealed connection between the connecting block 22 and the top plate, the protrusion 222 is seamlessly welded (fully welded) to the inner wall of the first through hole to achieve a fixed connection between the connecting block 22 and the top plate. The full welding ensures that there is no gap between the connecting block 22 and the first through hole, thus achieving a seal.

[0041] In this embodiment, to achieve a sealed connection between the cylinder 21 and the bottom plate, the connecting plate 4 is seamlessly welded (fully welded) to the bottom plate, and the portion of the cylinder 21 protruding from the bottom plate is seamlessly welded (fully welded) to the inner wall of the second through hole. By seamlessly welding the connecting plate 4 to the bottom plate and then seamlessly welding the cylinder 21 to the inner wall of the second through hole, the sealing between the cylinder 21 and the bottom plate is achieved.

[0042] Optionally, multiple connection structures are provided, and the multiple connection structures are divided into two groups. The two groups of connection structures are distributed at intervals along the width direction of the frame, and the multiple connection structures in each group are distributed at intervals along the length direction of the frame. By connecting the two groups of connection structures to the frame, the box 1 is more firmly fixed.

[0043] In this embodiment, as Fig. 3 As shown, the housing 1 includes a main body 11 and extensions 12 disposed on both sides of the main body 11 along the width direction of the frame. Two sets of connecting structures are respectively disposed on the extensions 12 on both sides, that is, the two ends of the connecting bracket 2 are respectively sealed and connected to the top plate and bottom plate of the corresponding extension 12. The bottom ends of both sides of the frame along its width direction abut against the top plates of the extensions 12 on both sides and are connected by connectors 3. This structure can maximize the volume of the housing 1 and improve the utilization rate of the housing 1.

[0044] Optionally, the cylinder 21 is made of stainless steel pipe and the connecting block 22 is made of stainless steel. The cylinder 21 and the connecting block 22 are connected by seamless welding of the connecting block 22 to the cylinder 21. By using stainless steel, fuel corrosion can be avoided and the service life can be improved.

[0045] This utility model embodiment also provides an engineering machine, including a frame and the aforementioned fuel tank, with a connecting bracket 2 disposed inside the housing 1, and a connecting piece 3 disposed on the connecting bracket 2 and extending out of the housing 1 through the first through hole to connect with the frame.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fuel tank, installed on construction machinery, characterized in that, The fuel tank includes: Box (1); The connection structure includes a connection bracket (2) and a connector (3). The connection bracket (2) is disposed inside the housing (1), and the connector (3) is disposed on the connection bracket (2). The housing (1) is provided with a first through hole, and the connector (3) extends out of the housing (1) through the first through hole. The connector (3) is used to connect with the frame of the engineering machinery.

2. The fuel tank according to claim 1, characterized in that, The top plate of the box (1) is provided with the first through hole, and the bottom plate of the box (1) is provided with the second through hole; The connecting bracket (2) includes a cylindrical body (21) and a connecting block (22). The cylindrical body (21) has a central through hole (211). The connecting block (22) is fixedly disposed at one end of the cylindrical body (21) and sealed to the first through hole. The cylindrical body (21) passes through the second through hole, and the outer wall of the cylindrical body (21) is sealed to the second through hole. The end of the central through hole (211) away from the connecting block (22) is connected to the outside. The connecting block (22) is provided with a mounting hole (221) that communicates with the central through hole (211). A part of the connecting member (3) is confined within the central through hole (211), and the other part passes through the mounting hole (221) and extends out from the first through hole to the housing (1) and connects to the frame.

3. The fuel tank according to claim 2, characterized in that, The connecting block (22) has a protrusion (222) on its end face away from the cylinder (21), and the protrusion (222) is sealed inside the first through hole.

4. The fuel tank according to claim 3, characterized in that, The protrusion (222) is welded to the inner wall of the first through hole.

5. The fuel tank according to claim 2, characterized in that, A connecting plate (4) is provided on the outside of the base plate. The connecting plate (4) is provided with a second through hole. A third through hole is provided on the base plate at the position corresponding to the second through hole. One end of the cylinder (21) away from the connecting block (22) passes through the third through hole and protrudes from the base plate. The part of the cylinder (21) protruding from the base plate is sealed in the second through hole.

6. The fuel tank according to claim 5, characterized in that, The connecting plate (4) is welded to the bottom plate, and the part of the cylinder (21) protruding from the bottom plate is welded to the inner wall of the second through hole.

7. The fuel tank according to claim 2, characterized in that, The connector (3) includes a bolt (31) and a nut (32). The bolt (31) passes through both the mounting hole (221) and the fourth through hole of the frame. The nut (32) is screwed onto the bolt (31) and presses against the frame.

8. The fuel tank according to claim 1, characterized in that, The connection structure is provided in multiple ways, and the multiple connection structures are divided into two groups. The two groups of connection structures are distributed at intervals along the width direction of the frame, and the multiple connection structures in each group are distributed at intervals along the length direction of the frame.

9. The fuel tank according to claim 8, characterized in that, The housing (1) includes a main body (11) and extensions (12) disposed on both sides of the main body (11) along the width direction of the frame, and two sets of the connecting structures are respectively disposed on the extensions (12) on both sides.

10. Construction machinery, characterized in that, The vehicle includes a frame and a fuel tank as described in any one of claims 1-9, wherein the connecting bracket (2) is disposed inside the housing (1), and the connecting member (3) is disposed on the connecting bracket (2) and extends out of the housing (1) through the first through hole to connect with the frame.

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