Fuel tank structure for large-tonnage loader

Abstract

The utility model discloses a fuel tank structure for a large-tonnage loader, which belongs to the technical field of engineering machinery accessories and comprises a closed fuel tank main body formed by welding a U-shaped top plate and a U-shaped bottom plate, non-collinear mounting brackets are arranged on two sides of the fuel tank main body, and one side of the fuel tank main body is further connected with an oil filling pipe assembly capable of realizing flexible transition; and a first supporting oil baffle plate and a second supporting oil baffle plate are also arranged in the oil tank main body. The closed oil tank formed by welding the U-shaped top plate and the U-shaped bottom plate is small in welding seam number and short in welding seam length; a plurality of mounting brackets with height difference can relieve larger acceleration impact between the fuel tank main body and the mounting brackets; the flexible transition oil filling pipe assembly can reduce the pulling of lever force formed when the oil filling pipe extends outwards to the oil tank main body; the two supporting oil blocking partition plates welded to the bottom plate of the oil tank body can enhance the overall strength of the bottom plate, slow down the situation that fuel rapidly flows to the other side when a loader goes uphill and downhill, and avoid engine flameout caused by fuel suction.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery accessories, and in particular relates to a fuel tank structure for a large-tonnage loader. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] In the prior art, the design of the fuel tank of a large tonnage loader has the following defects:

[0004] The existing fuel tank body is usually welded together by multiple plates, such as Figure 1 As shown, this fuel tank body not only has the problem of long welds, but also has the problems of large welding deformation, inability to completely release welding stress, and high failure rate of welding cracking and leakage.

[0005] In addition, the prior art often directly welds the side of the fuel tank body to the loader fuel tank mounting bracket, directly and rigidly connects the fuel tank with the fuel tank, and then installs the fuel tank and the fuel tank in the loader through the loader fuel tank mounting bracket; this causes the loader fuel tank bracket and the fuel tank to vibrate due to the vibration of the vehicle body during movement, and long-term vibration will easily cause the weld between the bracket and the body to crack, resulting in oil leakage from the fuel tank; the fuel tank is rigidly connected to the fuel tank, and the lever force of the fuel tank extending outward will pull the side panel of the fuel tank body, causing cracking of the weld between the side panel and other panels; or during the starting and braking process of the loader, the oil in the fuel tank generates a large acceleration, thereby generating a large acceleration impact on the fuel tank, causing damage to the weld between the fuel tank and the bracket, resulting in cracking; when the loader goes uphill or downhill, due to the inclination of the fuel tank, the fuel flows in the inclination direction, which easily causes the problem of air absorption, resulting in flameout. Utility Model Content

[0006] In view of the above problems, the utility model provides a fuel tank structure for a large-tonnage loader, which can reduce the length of the weld, reduce the welding deformation, strengthen the overall strength of the fuel tank, reduce weld cracking and leakage, and avoid the fuel tank from being sucked empty when going up and down slopes.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A fuel tank structure for a large-tonnage loader comprises a closed fuel tank body formed by welding a U-shaped top plate and a U-shaped bottom plate, both sides of the fuel tank body are provided with non-collinear mounting brackets, one side of which is also connected with a refueling pipe assembly that can be flexibly transitioned; two supporting oil baffles are also provided in the fuel tank body.

[0009] Preferably, the top plate includes a first plate and a second plate of the same size that are fixedly connected, a horizontal long side of the first plate is fixedly connected to a horizontal long side of the second plate, and the first plate and the second plate form an obtuse angle after being connected; another horizontal long side of the first plate is fixedly connected to the small baffle, and another horizontal long side of the second plate is fixedly connected to the large baffle.

[0010] Preferably, the bottom plate includes a third flat plate, on the two horizontal long sides of which T-shaped side plates of the same size are vertically fixedly connected, and the hypotenuse of the T-shaped side plate has a transition section in the middle; the bottom plate as a whole is larger than the top plate, and the welds between the top plate and the bottom plate are both arranged on one side of the bottom plate; the top plate and the bottom plate are both manufactured by an integrated processing technology.

[0011] Preferably, the refueling pipe assembly includes a refueling pipe opening, which is fixedly connected to a T-shaped side plate on one side of the fuel tank body; the refueling pipe opening is connected to one end of a connecting hose via a clamp, and the other end of the connecting hose is connected to the refueling pipe via a clamp; a refueling pipe bracket is provided on the refueling pipe; the length of the connecting hose is variable.

[0012] Preferably, the mounting bracket is composed of a mounting bracket body and a bracket pad made by a U-shaped bending processing technology. The mounting bracket body includes a U-shaped plate. A bolt hole is opened in the center of the horizontal plate of the U-shaped plate. The two vertical plates of the U-shaped plate are respectively fixedly connected to the triangular plates. The mounting bracket body formed by the U-shaped plate and two triangular plates of the same size is provided with a bracket pad inside.

[0013] Preferably, the support pad is first welded to the T-shaped side plate, and then the mounting support body is welded to the T-shaped side plate.

[0014] Preferably, three mounting brackets are welded on each T-shaped side plate, and the mounting brackets are not collinear and have a certain height difference △h. The height difference △h should satisfy △h=1.5t, wherein t is the material thickness of the mounting bracket.

[0015] Preferably, a first supporting oil baffle plate and a second supporting oil baffle plate are also provided in the bottom plate, and the first supporting oil baffle plate and the second supporting oil baffle plate are respectively arranged at the position of 1 / 3 length and 2 / 3 length of the horizontal long side of the third flat plate; the three sides where the two supporting oil baffle plates contact the third flat plate and the T-shaped side plate are all welded by double-sided cross intermittent welding.

[0016] Preferably, the height of the first or second supporting oil baffle plate is h≈2 / 3H, where H is the height of the T-shaped side plate at the corresponding supporting oil baffle plate welding position.

[0017] Compared with the prior art, the utility model has the following advantages and positive effects:

[0018] The utility model uses a U-shaped top plate and a U-shaped bottom plate which are integrally manufactured and welded to form a closed fuel tank, thereby reducing the number of welds and shortening the length of welds; by first welding the bracket pad to the fuel tank and then welding the mounting bracket body to the bracket pad, the occurrence of tearing caused by the direct connection between the mounting bracket and the fuel tank body is avoided; by arranging a plurality of mounting brackets with height differences on the fuel tank body, the large acceleration impact between the fuel tank body and the mounting bracket can be alleviated; by arranging a connecting hose with variable length on the fuel filling pipe, the pulling of the lever force on the fuel tank body when the fuel filling pipe is extended outward is reduced, and the position where the fuel filling pipe assembly is fixed to the loader frame is changed; by welding a first supporting oil baffle plate and a second supporting oil baffle plate on the bottom plate of the fuel tank body, the overall strength of the bottom plate is strengthened, and the rapid flow of fuel to the other side when the loader goes uphill or downhill is slowed down, thereby avoiding the engine flameout caused by "fuel suction". BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is an overall schematic diagram of the fuel tank of the prior art of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the fuel tank of an embodiment of the utility model;

[0022] Figure 3 It is an overall schematic diagram of the top plate of an embodiment of the utility model;

[0023] Figure 4 It is an overall schematic diagram of the bottom plate of an embodiment of the utility model;

[0024] Figure 5 It is an exploded view of the fuel pipe assembly of the embodiment of the utility model;

[0025] Figure 6 This is an overall schematic diagram of the mounting bracket of an embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the position of the supporting oil baffle plate in the bottom plate of the embodiment of the utility model;

[0027] In the figure:

[0028] 1-tank body, 11-top plate, 111-first flat plate, 112-second flat plate, 113-small baffle, 114-large baffle, 12-bottom plate, 121-third flat plate, 122-T-shaped side plate, 123-transition section, 2-mounting bracket, 21-mounting bracket body, 22-bracket pad, 23-U-shaped plate, 24-bolt hole, 25-triangle plate, 3-fuel pipe assembly, 31-fuel pipe port, 32-fuel pipe, 33-connecting hose, 34-fuel pipe bracket, 35-clamp, 41-first support oil baffle, 42-second support oil baffle. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] The utility model is described in detail below in conjunction with the accompanying drawings. The present embodiment discloses a fuel tank structure for a large tonnage loader, such as Figure 2 As shown, it includes a fuel tank body 1, and three non-collinear mounting brackets 2 are arranged on the left and right sides of the fuel tank body 1. A refueling pipe assembly 3 that can be flexibly transitioned is connected to the right side of the fuel tank body 1; Figure 7 As shown, a first supporting oil baffle plate 41 and a second supporting oil baffle plate 42 are also provided in the oil tank body 1 .

[0031] like Figure 3 , Figure 4 As shown, the oil tank body 1 is welded and connected by a U-shaped top plate 11 and a U-shaped bottom plate 12 to form a closed oil tank; wherein the top plate 11 includes a first plate 111 and a second plate 112 of the same size, one horizontal long side of the first plate 111 is fixedly connected to one horizontal long side of the second plate 112, and the first plate 111 and the second plate 112 are connected to form an obtuse angle, the other horizontal long side of the first plate 111 is fixedly connected to a small baffle 113, and the other horizontal long side of the second plate 112 is fixedly connected to a large baffle 114. In this embodiment, the bottom plate 12 includes a third plate 121, and the two horizontal long sides of the third plate 121 are vertically fixedly connected to T-shaped side plates 122 of the same size, and the hypotenuse of the T-shaped side plate 122 has a transition section 123 in the middle. The small baffle 113 or the large baffle 114 is welded to the third plate 121 and the T-shaped side plate 122; the T-shaped side plate 122 is welded to the first plate 111 and the second plate 112.

[0032] In this embodiment, the length of the vertical short side of the T-shaped side plate 122 is greater than the vertical side of the small baffle 113, and the length of the vertical long side of the T-shaped side plate 122 is greater than the vertical side of the large baffle 114; the connection between the first plate 111 and the second plate 112 corresponds to the transition section 123, and the length of the line from the top of the plate at the connection to the third plate 121 is less than the length of the line from the bottom of the transition section 123 to the third plate 121; the length of the horizontal short side of the third plate 121 is greater than the horizontal long side of the first plate or the second plate, and the length of the horizontal long side of the third plate 121 is greater than the sum of the lengths of the horizontal short sides of the first plate and the second plate; the reason for this arrangement is to make the bottom plate 12 as a whole larger than the top plate 11, so that the welds of the top plate 11 and the bottom plate 12 are both set on one side of the bottom plate 12, which can reduce the welding deformation.

[0033] In this embodiment, the top plate 11 and the bottom plate 12 are both made by an integrated processing technology, which can reduce the welds when welding the tank body 1, and the length of the welds is short, which can reduce the welding deformation and reduce the failure rate of weld cracking and leakage.

[0034] like Figure 2 , Figure 4 , Figure 5 As shown, the refueling pipe assembly 3 includes a refueling pipe opening 31, which is integrally fixedly connected to the T-shaped side plate 122 on one side of the fuel tank body 1 and is used to connect the refueling pipe to supply oil into the fuel tank; the refueling pipe opening 31 is connected to one end of a connecting hose 33 through a clamp 35, and the other end of the connecting hose 33 is connected to the refueling pipe 32 through a clamp 35; a refueling pipe bracket 34 is provided on the refueling pipe 32, which is used to fix the refueling pipe 32 on the loader.

[0035] In this embodiment, the refueling pipe 32 is fixed to the loader through the refueling pipe bracket 34, and the fuel tank body 1 is fixed to the loader through the mounting bracket 2. The refueling pipe 32 is connected to the fuel tank body 1 through the connecting hose 33. When the loader is started, the flexible transition of the connecting hose 33 can effectively reduce the lever force formed when the refueling pipe 32 is extended, thereby reducing the pulling of the refueling pipe 32 on the T-shaped side plate, thereby reducing the pulling of the refueling pipe 32 on the weld between the bottom plate and the top plate, which can effectively reduce the failure rate of cracking and oil leakage of the fuel tank weld; and the position of the refueling pipe assembly 3 fixed to the loader frame can be changed by adjusting the length of the connecting hose.

[0036] In this embodiment, if Figure 6As shown, the mounting bracket 2 is composed of a mounting bracket body 21 and a bracket pad 22 which are made by a U-shaped bending process. The mounting bracket body 21 includes a U-shaped plate 23. A bolt hole 24 is opened in the center of the horizontal plate of the U-shaped plate 23 for mounting the fuel tank on the loader; the two vertical plates of the U-shaped plate 23 are respectively fixedly connected to the triangular plates 25, and a bracket pad 22 is also arranged inside the mounting bracket body 21 formed by the U-shaped plate 23 and two triangular plates 25 of the same size.

[0037] In this embodiment, the bracket pad 22 needs to be welded to the T-shaped side plate 122, and then the mounting bracket body 21 is welded to the T-shaped side plate 122, so that the mounting bracket body 21, the T-shaped side plate 122, and the bracket pad 22 are integrated. This method can not only ensure the contact area between the mounting bracket 2 and the T-shaped side plate 122, but also prevent the vibration energy generated by the loader during operation from causing tearing between the mounting bracket 2 and the T-shaped side plate 122.

[0038] like Figure 2 , Figure 6 As shown, three mounting brackets 2 are welded on each T-shaped side plate 122, and the mounting brackets 2 are not collinear and have a certain height difference △h, which should satisfy △h=1.5t, where t is the material thickness of the mounting bracket. This height difference design can effectively alleviate the large acceleration impact between the fuel tank body 1 and the mounting bracket 2.

[0039] In this embodiment, if Figure 7 As shown, a first supporting oil baffle 41 and a second supporting oil baffle 42 are also provided in the bottom plate 12, and the first supporting oil baffle 41 and the second supporting oil baffle 42 are respectively provided at the position of 1 / 3 length and 2 / 3 length of the horizontal long side of the third flat plate 121; the three sides of the two supporting oil baffles in contact with the third flat plate 121 and the T-shaped side plate 122 are all welded in a double-sided cross intermittent welding manner, which increases the connection strength and effectively reduces the welding stress; the height of the two supporting oil baffles h≈2 / 3H, H is the height of the T-shaped side plate 122 at the corresponding supporting oil baffle welding position. In this embodiment, the provision of the first supporting oil baffle 41 and the second supporting oil baffle 42 can firstly strengthen the overall strength of the bottom plate 12, thereby improving the strength of the fuel tank body 1; secondly, when the loader is going uphill or downhill, it can effectively slow down the rapid flow of fuel to the other side, and avoid the engine flameout caused by "fuel suction".

[0040] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A fuel tank structure for a large-tonnage loader, characterized in that: It includes a closed oil tank body formed by welding a U-shaped top plate and a U-shaped bottom plate. Non-collinear mounting brackets are arranged on both sides of the oil tank body, and one side is also connected to a refueling pipe assembly that can be flexibly transitioned; a first supporting oil baffle plate and a second supporting oil baffle plate are also arranged in the oil tank body.

2. A fuel tank structure for a large-tonnage loader as claimed in claim 1, characterized in that: The top plate includes a first plate and a second plate of the same size that are fixedly connected, a horizontal long side of the first plate is fixedly connected to a horizontal long side of the second plate, and the first plate and the second plate form an obtuse angle after being connected; another horizontal long side of the first plate is fixedly connected to the small baffle, and another horizontal long side of the second plate is fixedly connected to the large baffle.

3. A fuel tank structure for a large tonnage loader as claimed in claim 1, characterized in that: The bottom plate includes a third flat plate, and T-shaped side plates of the same size are vertically fixedly connected to the two horizontal long sides of the third flat plate, and the hypotenuse of the T-shaped side plate has a transition section in the middle position; the bottom plate is larger than the top plate as a whole, and the welds between the top plate and the bottom plate are both arranged on one side of the bottom plate; the top plate and the bottom plate are both made by an integrated processing technology.

4. A fuel tank structure for a large-tonnage loader as claimed in claim 3, characterized in that: The third flat plate and the T-shaped side plate are both welded to the small baffle plate or the large baffle plate; the T-shaped side plate is welded to the first flat plate and the second flat plate.

5. A fuel tank structure for a large tonnage loader as claimed in claim 3, characterized in that: The refueling pipe assembly includes a refueling pipe opening, which is fixedly connected to a T-shaped side plate on one side of the fuel tank body; the refueling pipe opening is connected to one end of a connecting hose through a clamp, and the other end of the connecting hose is connected to the refueling pipe through a clamp; a refueling pipe bracket is provided on the refueling pipe; and the length of the connecting hose is variable.

6. A fuel tank structure for a large tonnage loader as claimed in claim 1, characterized in that: The mounting bracket is composed of a mounting bracket body and a bracket pad which are made by a U-shaped bending process. The mounting bracket body includes a U-shaped plate. A bolt hole is opened in the center of the horizontal plate of the U-shaped plate. The two vertical plates of the U-shaped plate are respectively fixedly connected to the triangular plates. The mounting bracket body formed by the U-shaped plate and two triangular plates of the same size is provided with a bracket pad inside.

7. A fuel tank structure for a large tonnage loader as claimed in claim 6, characterized in that: Three mounting brackets are welded on each T-shaped side plate; when welding the mounting brackets to the fuel tank body, the bracket pads must be welded to the T-shaped side plate first, and then the mounting bracket body must be welded to the T-shaped side plate.

8. A fuel tank structure for a large-tonnage loader as claimed in claim 7, characterized in that: The three mounting brackets welded on the same T-shaped side plate are not collinear and have a certain height difference △h. The height difference △h should satisfy △h=1.5t, where t is the material thickness of the mounting bracket.

9. A fuel tank structure for a large tonnage loader as claimed in claim 3, characterized in that: A first supporting oil baffle plate and a second supporting oil baffle plate are also arranged in the bottom plate. The first supporting oil baffle plate and the second supporting oil baffle plate are respectively arranged at 1 / 3 and 2 / 3 of the length of the horizontal long side of the third flat plate; the three sides of the two supporting oil baffle plates in contact with the third flat plate and the T-shaped side plate are all welded by double-sided cross intermittent welding.

10. A fuel tank structure for a large tonnage loader as claimed in claim 9, characterized in that: The height of the first or second supporting oil baffle plate is h≈2 / 3H, where H is the height of the T-shaped side plate at the corresponding supporting oil baffle plate welding position.

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