High-strength fuel tank structure

Abstract

The utility model discloses a high-strength fuel tank structure, which belongs to the technical field of fuel tanks of excavators and comprises an upper bent plate, the upper bent plate is butted with a lower bent plate, and the upper bent plate, a front plate and a rear plate jointly define a fuel tank body with closed inside and outside; the fuel tank further comprises an internal rib plate arranged on the closed fuel tank body, the internal rib plate comprises a vertical ring rib, and the vertical ring rib and the horizontal ring rib are welded in a 90-degree mode. Wherein the vertical ring rib is welded with the upper bending plate and the lower bending plate, and the horizontal ring rib is welded with the upper bending plate, the lower bending plate, the front plate and the rear plate. The vertical ring ribs penetrating from top to bottom are additionally arranged, so that the vertical ring ribs are all intermittently welded with the top plate, the bottom plate and the side plates, and the strength of the top and the bottom of the fuel tank body is enhanced; the horizontal ring ribs are vertically welded with the vertical ring ribs, and the horizontal ring ribs are welded with the front plate, the rear plate and the side plates, so that the fuel tank forms a firm whole, and the fuel tank body can resist the impact force of oil in all directions.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator fuel tanks, and in particular relates to a high-strength fuel tank structure. 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] The working condition of the excavator is relatively harsh, and it often bumps up and down and turns left and right. This also causes the inner wall of the excavator's hydraulic oil tank to resist the impact of hydraulic oil in all directions. As time accumulates, the welds of the oil tank body structure will crack.

[0004] In the prior art, patent CN214063415U discloses a reinforcing rib structure of a hydraulic oil tank, in which a plurality of rib plates are welded on the inner wall of the oil tank, the plurality of rib plates are spaced apart from each other, the rib plates are in the shape of long strips, the two ends of the rib plates have uninterrupted circumferential welded welds, and the two sides of the rib plates have intermittent welded welds; thereby improving the strength of the oil tank.

[0005] This structure has the following problems in that horizontal ring ribs are arranged around the fuel tank:

[0006] Only considering setting ribs on the inner wall of the fuel tank to strengthen the inner wall strength, without considering that the fuel tank is an integral structure, ignoring the lack of strength at the top and bottom of the fuel tank. When the oil in the fuel tank generates up and down impact force, it will cause the fuel tank to shake up and down, causing the fuel tank to rupture and reduce its service life. Utility Model Content

[0007] In view of the above problems, the utility model provides a high-strength fuel tank structure, which strengthens the top and bottom of the fuel tank body by arranging vertical ring ribs that penetrate from top to bottom, and intermittently welding the vertical ring ribs to the top plate, bottom plate and side plates; horizontal ring ribs are vertically welded to the vertical ring ribs, and the horizontal ring ribs are welded to the front plate, rear plate and side plates, so that the fuel tank forms a solid whole that can withstand the impact force of oil in all directions.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A high-strength fuel tank structure comprises an upper bending plate, which is butt-jointed with a lower bending plate and together with a front plate and a rear plate to form an inner and outer closed fuel tank body; it also comprises an internal rib plate arranged in the closed fuel tank body, the internal rib plate comprises vertical ring ribs, and the vertical ring ribs are welded to horizontal ring ribs at 90 degrees; wherein the vertical ring ribs are welded to the upper bending plate and the lower bending plate, and the horizontal ring ribs are welded to the upper bending plate, the lower bending plate, the front plate and the rear plate.

[0010] Preferably, the upper bending plate includes a top plate and a right side plate, and the lower bending plate includes a bottom plate and a left side plate; outside the fuel tank body, fuel tank mounting seats are fixedly welded on both sides of the bottom plate; inside the fuel tank body, U-shaped rib plates are provided at the same positions on both sides of the bottom plate.

[0011] Preferably, the U-shaped rib plates are welded to three sides of the right side plate, the left side plate, and the bottom plate; the widths of the "U" - shaped sides of the U-shaped rib plates are all 100 millimeters, and the total height of the U-shaped rib plates is less than one - fifth of the overall height of the fuel tank.

[0012] Preferably, the vertical ring ribs are parallel to the front plate and are arranged at equal intervals along the length direction of the top plate or the bottom plate; the vertical ring ribs are connected to the top plate, the right side plate, the left side plate, and the bottom plate all by intermittent welding.

[0013] Preferably, the vertical ring ribs are in the shape of "mu" (Chinese character for eye), and chamfers of 60 millimeters are provided at the four corners of the vertical ring ribs; three square holes are evenly opened inside the vertical ring ribs, and fillets with a radius of 100 millimeters are provided at the four corners of the square holes.

[0014] Preferably, the width of the square holes from the edge of the vertical ring ribs should not be less than 60 millimeters and should not be greater than 100 millimeters; the distance between the square holes is controlled between 100 millimeters and 120 millimeters; when the horizontal ring ribs are welded to the vertical ring ribs, they need to be welded at the central position between two square holes.

[0015] Preferably, reinforcing ribs are provided on both the front plate and the rear plate. The reinforcing ribs include vertical reinforcing ribs perpendicular to the bottom plate and horizontal reinforcing ribs arranged parallel to the vertical reinforcing ribs; when the horizontal ring ribs are welded to the front plate or the rear plate, they need to avoid the vertical reinforcing ribs; the horizontal ring ribs are also connected to the left side plate and the right side plate all by intermittent welding.

[0016] Preferably, the cross - sectional shapes of the vertical reinforcing ribs and the horizontal reinforcing ribs are both in the shape of "L", the wide side is welded to the front plate or the rear plate, and the narrow side is used to resist deformation; the vertical reinforcing ribs are arranged in two columns and two rows, all at intervals, and there is also a certain distance between the horizontal reinforcing ribs and the vertical reinforcing ribs.

[0017] Preferably, the thicknesses of the vertical reinforcing ribs, the horizontal reinforcing ribs, the U-shaped rib plates, the vertical ring ribs, and the horizontal ring ribs should not be greater than the thickness of the fuel tank body.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are:

[0019] In addition to arranging reinforcing ribs with an "L"-shaped cross-section inside the fuel tank body to ensure the strength of the front plate and the rear plate, the utility model also adds vertical ring ribs that penetrate from top to bottom, and the vertical ring ribs are intermittently welded to the top plate, the bottom plate, and the left and right side plates to strengthen the strength of the top and bottom of the fuel tank body; horizontal ring ribs are vertically welded to the vertical ring ribs, the horizontal ring ribs are welded to the front plate and the rear plate, and the horizontal ring ribs are also intermittently welded to the left and right side plates, so that the fuel tank forms a solid whole, so that the fuel tank body can withstand the impact force of the oil in all directions, thereby coping with the damage to the fuel tank body caused by the fuel shaking caused by the up and down bumps of the excavator.

[0020] The utility model also strengthens the connection between the bottom plate and the fuel tank mounting seat by means of the U-shaped rib plate, thereby preventing the weld seam of the fuel tank base from cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 This is a front view of a fuel tank according to an embodiment of the utility model;

[0023] Figure 2 is a cross-sectional view of a fuel tank of an embodiment of the utility model;

[0024] Figure 3 This is a bottom view of a fuel tank according to an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of a vertical ring rib in an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of a reinforcing rib of an embodiment of the utility model;

[0027] In the figure:

[0028] 1. Upper bending plate; 11. Top plate; 12. Right side plate; 2. Lower bending plate; 21. Bottom plate; 22. Left side plate; 23. Fuel tank mounting base; 24. U-shaped rib plate; 3. Front plate; 31. Vertical reinforcing ribs; 32. Horizontal reinforcing ribs; 4. Rear plate; 5. Vertical ring ribs; 51. Square hole; 6. Horizontal ring ribs. 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 embodiment discloses a high-strength fuel tank structure, such as Figure 1 , Figure 2 As shown, it includes an upper bending plate 1, which is connected to the lower bending plate 2 and together with the front plate 3 and the rear plate 4 to form an inner and outer closed fuel tank body; it also includes an internal rib plate arranged in the closed body, the internal rib plate includes a vertical ring rib 5, and the vertical ring rib 5 is welded to the horizontal ring rib 6 at 90 degrees; wherein the vertical ring rib 5 is welded to the upper bending plate 1 and the lower bending plate 2, and the horizontal ring rib 6 is welded to the upper bending plate 1, the lower bending plate 2, the front plate 3, and the rear plate 4.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, the upper bending plate 1 includes a top plate 11 and a right side plate 12, and the lower bending plate 2 includes a bottom plate 21 and a left side plate 22; the top plate 11 and the right side plate 12 are made in one piece, and the bottom plate 21 and the left side plate 22 are made in one piece, the top plate 11 and the left side plate 22 are welded, and the right side plate 12 and the bottom plate 21 are welded; the upper bending plate 1 and the lower bending plate 2 are welded to the front plate 3 and the rear plate 4, and together form a fuel tank body that is closed inside and outside; on the outside of the fuel tank, fuel tank mounting seats 23 are fixedly welded on both sides of the bottom plate 21 for mounting the fuel tank on the corresponding position of the excavator.

[0032] In this embodiment, if Figure 1 As shown, inside the fuel tank, U-shaped ribs 24 are arranged at the same positions on both sides of the bottom plate 21; the U-shaped ribs 24 are welded to the right side plate 12, the left side plate 22, and the bottom plate 21. In this embodiment, the width of the "U"-shaped sides of the U-shaped ribs 24, i.e., the two sides in the vertical direction and the bottom side, are both 100 mm, and the total height of the U-shaped ribs 24 is less than one fifth of the overall height of the fuel tank; this is to ensure that the U-shaped ribs 24 can both enhance the strength of the bottom plate 21 at the fuel tank mounting seat 23 and prevent the weld between the fuel tank mounting seat 23 and the bottom plate 21 from cracking; and avoid material waste.

[0033] like Figure 2 As shown, the vertical ring ribs 5 are parallel to the front plate 3 and are arranged at equal intervals along the length direction of the top plate 11 or the bottom plate 21, so as to ensure that the upper bending plate 1 and the lower bending plate 2 of the fuel tank are subjected to uniform force; the vertical ring ribs 5 and the top plate 11, the right side plate 12, the left side plate 22 and the bottom plate 21 are all connected by intermittent welding, which can reduce welding deformation and reserve space for welding deformation, thereby ensuring the overall stability of the connection between the vertical ring ribs 5 and the lower bending plate and the upper bending plate.

[0034] In this embodiment, if Figure 2 , Figure 4As shown, the vertical ring rib 5 is in the shape of "mu" (目), and chamfers of 60 mm are provided at the four corners of the vertical ring rib 5; three square holes 51 are evenly opened inside the vertical ring rib 5, and fillets with a radius of 100 mm are provided at the four corners of the square holes 51; the function of the chamfers and fillets is to avoid stress concentration on the vertical ring rib 5 after the vertical ring rib 5 is welded to the upper bending plate 1 and the lower bending plate 2, thus causing damage.

[0035] In this embodiment, it should be noted that the width of the square hole 51 from the edge of the vertical ring rib 5 should not be less than 60 mm, but also should not be greater than 100 mm; the distance between the square holes 51 is controlled between 100 mm and 120 mm. These width ranges are restricted because the vertical ring rib 5 needs to be welded to the upper bending plate 1, the lower bending plate 2 and the horizontal ring rib 6. If the distance is too narrow, it will surely affect the welding quality and cause stress concentration; if it is too wide, it will cause an increase in cost.

[0036] In this embodiment, as Figure 2 shown, reinforcing ribs are provided on both the front plate 3 and the rear plate 4. The reinforcing ribs include vertical reinforcing ribs 31 perpendicular to the bottom plate 21 and horizontal reinforcing ribs 32 arranged parallel to the vertical reinforcing ribs 31; as Figure 2 、 Figure 5 shown, the cross-sectional shapes of both the vertical reinforcing ribs 31 and the horizontal reinforcing ribs 32 are in the shape of "L". The wide side is welded to the front plate 3 or the rear plate 4, and the narrow side is used to resist deformation; the overall strength of the front plate 3 and the rear plate 4 is strengthened by the vertical reinforcing ribs 31 and the horizontal reinforcing ribs 32. It should be noted that in this embodiment, the vertical reinforcing ribs 31 are arranged in two columns and two rows, all arranged at intervals, and a certain distance should also be reserved between the horizontal reinforcing ribs 32 and the vertical reinforcing ribs 31 to avoid stress concentration.

[0037] In this embodiment, the horizontal ring rib 6 is welded to the vertical ring rib 5 at 90°. When the horizontal ring rib 6 is welded to the vertical ring rib 5, it needs to be welded at the center position between the two square holes 51; when the horizontal ring rib 6 is welded to the front plate 3 or the rear plate 4, it needs to avoid the vertical reinforcing ribs 31; the horizontal ring rib 6 is also connected to the left side plate and the right side plate by intermittent welding, so as to reduce welding deformation and also reserve space for welding deformation, ensuring the overall stability of the connection between the horizontal ring rib 6 and the side plates, the front plate, the rear plate and the vertical ring rib.

[0038] In this embodiment, the connection between the bottom plate and the fuel tank mounting seat is strengthened by U-shaped rib plates; the overall strength of the front plate and the rear plate is enhanced by vertical reinforcing ribs and horizontal reinforcing ribs. The vertical ring rib is used to hold the bottom plate and the top plate, and the horizontal ring rib is used to hold the front plate and the rear plate, making the fuel tank form a solid whole; thus enabling the fuel tank to withstand the impact force of the oil fluid in all directions.

[0039] It should be noted that in this embodiment, the thickness of the U-shaped ribs, vertical annular ribs, horizontal annular ribs, vertical reinforcing ribs, and horizontal reinforcing ribs cannot be greater than the thickness of the tank body, which can not only achieve the effect of strengthening the fuel tank body but also save materials to the greatest extent, thereby improving the performance of the fuel tank and reducing costs.

[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 high-strength fuel tank structure, characterized in that: It includes an upper bending plate, which is对接 with a lower bending plate, and together with a front plate and a rear plate, it encloses a fuel tank body that is closed inside and outside; it also includes internal rib plates arranged inside the closed fuel tank body. The internal rib plates include vertical ring ribs, and the vertical ring ribs are welded at a 90° angle with horizontal ring ribs; among them, the vertical ring ribs are welded with the upper bending plate and the lower bending plate, and the horizontal ring ribs are welded with the upper bending plate, the lower bending plate, the front plate, and the rear plate.

2. A high-strength fuel tank structure as claimed in claim 1, characterized in that: The upper bending plate includes a top plate and a right side plate, and the lower bending plate includes a bottom plate and a left side plate; outside the fuel tank body, fuel tank mounting seats are fixedly welded on both sides of the bottom plate; inside the fuel tank body, U-shaped rib plates are arranged at the same positions on both sides of the bottom plate.

3. A high-strength fuel tank structure as claimed in claim 2, characterized in that: The U-shaped rib plates are welded to the three sides of the right side plate, the left side plate, and the bottom plate; the widths of the "U" - shaped sides of the U-shaped rib plates are all 100 millimeters, and the total height of the U-shaped rib plates is less than one - fifth of the overall height of the fuel tank.

4. A high-strength fuel tank structure as claimed in claim 1, characterized in that: The vertical ring ribs are parallel to the front plate and are arranged at equal intervals along the length direction of the top plate or the bottom plate; the vertical ring ribs are connected to the top plate, the right side plate, the left side plate, and the bottom plate all by intermittent welding.

5. A high-strength fuel tank structure as claimed in claim 4, characterized in that: The vertical ring ribs are in the shape of "目", and chamfers with a size of 60 millimeters are opened at the four corners of the vertical ring ribs; three square holes are evenly opened inside the vertical ring ribs, and fillets with a radius of 100 millimeters are opened at the four corners of the square holes.

6. A high-strength fuel tank structure as claimed in claim 5, characterized in that: The width of the square holes from the edge of the vertical ring ribs should not be less than 60 millimeters and should not be greater than 100 millimeters; the distance between the square holes is controlled between 100 millimeters and 120 millimeters; when the horizontal ring ribs are welded to the vertical ring ribs, they need to be welded at the central position between two square holes.

7. A high-strength fuel tank structure as claimed in claim 3, characterized in that: Reinforcing ribs are arranged on both the front plate and the rear plate. The reinforcing ribs include vertical reinforcing ribs perpendicular to the bottom plate and horizontal reinforcing ribs arranged parallel to the vertical reinforcing ribs; when the horizontal ring ribs are welded to the front plate or the rear plate, they need to avoid the vertical reinforcing ribs; the horizontal ring ribs are also connected to the left side plate and the right side plate all by intermittent welding.

8. A high-strength fuel tank structure as claimed in claim 7, characterized in that: The cross - sectional shapes of the vertical reinforcing ribs and the horizontal reinforcing ribs are both in the shape of "L". The wide side is welded to the front plate or the rear plate, and the narrow side is used to resist deformation; the vertical reinforcing ribs are arranged in two columns and two rows, all at intervals, and there is also a space between the horizontal reinforcing ribs and the vertical reinforcing ribs.

9. A high-strength fuel tank structure as claimed in claim 7, characterized in that: The thicknesses of the vertical reinforcing ribs, the horizontal reinforcing ribs, the U-shaped rib plates, the vertical ring ribs, and the horizontal ring ribs should not be greater than the thickness of the fuel tank body.

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