Internal partition plate structure of hydraulic oil tank and hydraulic oil tank

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a hydraulic oil tank internal partition plate structure and a hydraulic oil tank, the middle position of a partition plate is bent to enable the cross section of the partition plate to be an obtuse angle, the top edge of the partition plate is of a W-shaped structure, and the two side edges of the partition plate are reversely bent and used for being welded to the inner wall of the hydraulic oil tank; the middle of the partition plate is bent, so that the cross section of the partition plate is obtuse, the partition plate has certain movement allowance, stress is prevented from being concentrated at the welding position of the side edge of the partition plate and the side wall of the oil tank, and the service life of the partition plate is prolonged. The edge of the top of the partition plate is arranged to be of the W-shaped structure, so that the two sides of the W-shaped structure and the bent part can jointly participate in deformation, and therefore the stress concentration phenomenon at the joint of the bent part and the side wall is weakened; the two side edges of the partition plate are reversely bent, stress balance is guaranteed, the first bent part and the second bent part are welded to the side wall of the hydraulic oil tank in an intermittent welding mode, and the phenomenon of stress concentration can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an internal partition structure of a hydraulic oil tank and a hydraulic oil tank. Background Art

[0002] With the improvement of the manufacturing level of construction machinery such as excavators, the operating conditions of excavators are gradually developing towards multi-conditions and heavy conditions; a partition structure needs to be set inside the traditional hydraulic oil tank to prevent the mixing of oils under different pressures, thereby controlling the complex flow of oil.

[0003] The inventors have discovered that the internal partitions of existing engineering machinery hydraulic oil tanks are mostly flat plate structures, and the two sides of the flat plate are vertically welded to the side walls of the hydraulic oil tank. For example, the utility model patent with application number CN208472825U discloses an excavator hydraulic control device with a multi-pass hydraulic oil filter. This type of partition connection is very likely to cause the weld between the partition and the side wall to break due to stress concentration when the hydraulic oil tank is internally stamped during operation and the side wall expands outward. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a hydraulic oil tank internal partition structure and a hydraulic oil tank, so that the partition has a certain amount of activity margin, thereby avoiding stress concentration at the welding point between the side edge of the partition and the side wall of the tank, thereby extending the life of the partition; the W-shaped structure further weakens the stress concentration at the connection between the partition and the side wall.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] In the first aspect, a partition structure inside a hydraulic oil tank is provided, wherein the partition is bent in the middle so that the partition cross section is an obtuse angle, the top edge of the partition is a W-shaped structure, and the two sides of the partition are bent in the opposite direction for welding with the inner wall of the hydraulic oil tank. The partition is bent in the middle so that the partition cross section is an obtuse angle, so that the partition has a certain amount of activity margin, thereby avoiding stress concentration at the welding point between the partition side and the tank side wall, and extending the life of the partition; by setting the top edge of the partition as a W-shaped structure, the two sides of the W-shaped structure can participate in the deformation together with the bent part, thereby weakening the stress concentration phenomenon at the connection between the bent part and the side wall.

[0007] As a further implementation method, the middle position of the partition is bent to form a bent edge, both sides of the bent edge are connecting parts, and the connecting parts are connected to the side edges of the partition through transition parts.

[0008] As a further implementation, the side edge of the partition is a bent portion.

[0009] As a further implementation method, the connecting part includes a first connecting part and a second connecting part with the same structure and an obtuse angle formed therebetween; the connecting part between the first connecting part and the second connecting part is a bent edge, and the angle between the first connecting part and the second connecting part is 125° to 150°.

[0010] As a further implementation, the transition portion includes a first transition portion and a second transition portion with the same structure, and the first transition portion and the second transition portion are located in the same plane and are both perpendicular to the side wall of the hydraulic oil tank.

[0011] As a further implementation, the bending portion includes a first bending portion and a second bending portion, the first bending portion is vertically connected to the first transition portion, the second bending portion is vertically connected to the second transition portion, and the first bending portion and the second bending portion extend in opposite directions.

[0012] As a further implementation, the first transition portion is connected to the first connection portion, and the second transition portion is connected to the second connection portion.

[0013] As a further implementation, two low points of the W-shaped structure are located at the top end of the connection between the transition portion and the connection portion.

[0014] As a further implementation, the middle high point of the W-shaped structure is located at the top of the bending edge, and the high points on both sides are located at the top of the connection between the transition part and the bending part.

[0015] In a second aspect, a hydraulic oil tank is provided with an internal partition structure of the hydraulic oil tank as described above.

[0016] The beneficial effects of the above utility model are as follows:

[0017] 1. The utility model bends the partition in the middle so that the cross section of the partition is an obtuse angle, so that the partition has a certain margin of activity, thereby avoiding stress concentration at the welding point between the side edge of the partition and the side wall of the oil tank, and extending the life of the partition; by setting the top edge of the partition as a W-shaped structure, the two sides of the W-shaped structure can participate in the deformation together with the bent part, thereby weakening the stress concentration phenomenon at the connection between the bent part and the side wall.

[0018] 2. The two sides of the partition of the utility model are bent in opposite directions to ensure force balance. The first bent portion and the second bent portion are welded to the side wall of the hydraulic oil tank by intermittent welding, which can reduce the stress concentration phenomenon. 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 1It is a schematic diagram of the overall structure of the internal partition structure of the hydraulic oil tank in the embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the axonometric structure of the internal partition structure of the hydraulic oil tank in the embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the top view of the internal partition structure of the hydraulic oil tank in the embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the hydraulic oil tank in the embodiment of the utility model.

[0024] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0025] Among them: 1. partition, 11. W-shaped structure, 12. first connecting part, 13. second connecting part, 14. first transition part, 15. second transition part, 16. first bending part, 17. second bending part, 18. bending edge; 21. left side wall, 22. right side wall. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0027] Embodiment 1

[0028] In a typical implementation of the present invention, reference is made to Figure 1-Figure 3 As shown, a partition structure inside a hydraulic oil tank includes a partition 1 bent in the middle so that the partition cross-section is an obtuse angle, the top edge of the partition 1 is a W-shaped structure 11, and both side edges of the partition 1 are bent in the opposite direction for welding with the inner wall of the hydraulic oil tank.

[0029] like Figure 1-Figure 3 As shown, the middle position of the partition 1 is bent to form a bent edge 18, and both sides of the bent edge 18 are connecting parts. The connecting parts are connected to the side edges of the partition through transition parts, and the side edges of the partition 1 are bent parts.

[0030] The connecting part includes a first connecting part 12 and a second connecting part 13 of the same structure. The first connecting part 12 and the second connecting part 13 are both plate-shaped structures. The first connecting part 12 and the second connecting part 13 are connected at a bending edge 18, which is vertically arranged and located in the middle of the partition 1. By bending, the angle between the first connecting part 12 and the second connecting part 13 is an obtuse angle, such as Figure 3 The included angle between the first connecting portion 12 and the second connecting portion 13 is 125° to 150°, preferably 150°.

[0031] The angle between the first connection portion 12 and the second connection portion 13 is an obtuse angle, so that during the operation of the hydraulic oil tank, the bent edge 18 will not undergo transitional deformation, thereby ensuring that the bent edge 18 will not break.

[0032] By bending the partition 1, the partition 1 has a certain amount of movement relative to the flat structure when working facing the hydraulic oil tank, thereby avoiding stress concentration at the welding point between the side of the partition and the side wall of the oil tank, thereby extending the life of the partition.

[0033] The transition portion includes a first transition portion 14 and a second transition portion 15 of the same structure, wherein the first transition portion 14 and the second transition portion 15 are located in the same plane and are both perpendicular to the side wall of the hydraulic oil tank, so the transition portion and the connecting portion are not on the same plane. Figure 3 The first transition portion 14 is connected to the first connection portion 12 , and the second transition portion 15 is connected to the second connection portion 13 .

[0034] The bending portion includes a first bending portion 16 and a second bending portion 17 with the same structure. The first bending portion 16 is vertically connected to the first transition portion 14, and the second bending portion 17 is vertically connected to the second transition portion 15. The connection between the transition portion and the bending portion can be smoothly transitioned.

[0035] The first bending portion 16 and the second bending portion 17 extend in opposite directions. The first bending portion 16 and the second bending portion 17 are plate-like structures. The planes of the bending portions are parallel to the left side wall 21 and the right side wall 22 of the hydraulic oil tank. The bending portions are welded to the side walls.

[0036] The first bending portion 16 and the second bending portion 17 extend in opposite directions, so as to ensure that the partition is subjected to balanced forces when the hydraulic oil tank is working, thereby ensuring the stability of the partition 1 .

[0037] like Figure 4 As shown, it can be understood that the first bent portion 16 is connected to the left side wall 21 of the hydraulic oil tank by intermittent welding, and the second bent portion 17 is connected to the right side wall 22 of the hydraulic oil tank by intermittent welding. The intermittent welding connection reduces stress concentration.

[0038] In order to further reduce the risk of welding between the partition and the side wall of the fuel tank, it is necessary to weaken the stress concentration phenomenon at the welding point. A W-shaped structure 11 can be processed at the top of the partition, such as Figure 1 and Figure 2 shown.

[0039] Specifically, the two low points of the W-shaped structure 11 are located at the top of the connection between the transition part and the connection part. The middle high point of the W-shaped structure is located at the top of the bending edge 18, and the high points on both sides are located at the top of the connection between the transition part and the bending part.

[0040] By setting the W-shaped structure 11, the width of the first transition part 14 and the second transition part 15 near the top end gradually decreases from bottom to top, so that when the hydraulic oil tank is working, the structure of the top end part of the transition part and the structure of the bending part connected thereto are integrated and participate in the deformation together, thereby weakening the stress concentration phenomenon at the connection between the bending part and the side wall, and better protecting the partition.

[0041] During operation, the bending edge 18 is also prone to fracture due to stress. The W-shaped structure setting of this embodiment ensures the structural height of the position where the bending edge is located, thereby ensuring the strength of the structure at the bending edge 18 and reducing the risk of fracture.

[0042] If the W-shaped structure is changed to a C-shaped structure, the strength of the structure at the bending edge 18 will be greatly reduced. Compared with the C-shaped structure, the W-shaped structure of this embodiment only needs to raise the middle part of the partition to make the bending edge 18 less likely to break.

[0043] Embodiment 2

[0044] In a typical implementation of the present invention, Figure 1-Figure 4 As shown, a hydraulic oil tank is provided with an internal partition structure of the hydraulic oil tank as described above, the partition 1 is installed between the left side wall 21 and the right side wall 22 of the hydraulic oil tank, and the bottom end of the partition is close to the bottom plate of the hydraulic oil tank but does not contact the bottom plate of the hydraulic oil tank.

[0045] A W-shaped structure 11 is processed at the top of the partition so that the widths of the first transition portion 14 and the second transition portion 15 near the top gradually decrease from bottom to top. When the hydraulic oil tank is working, the structure of the top of the transition portion and the structure of the bent portion connected thereto are integrated and participate in the deformation together, thereby weakening the stress concentration phenomenon at the connection between the bent portion and the side wall and better protecting the partition.

[0046] Compared with the C-shaped structure, the W-shaped structure only needs to raise the middle part of the partition to increase the strength of the bent edge 18, making it less likely to break, thereby extending the service life of the partition.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic oil tank internal partition structure, characterized in that: The middle position of the partition is bent so that the cross section of the partition is an obtuse angle, the top edge of the partition is a W-shaped structure, and the two sides of the partition are bent in the opposite direction for welding with the inner wall of the hydraulic oil tank.

2. The internal partition structure of a hydraulic oil tank according to claim 1, characterized in that: The middle position of the partition is bent to form a bent edge, and both sides of the bent edge are connecting parts, and the connecting parts are connected to the side edges of the partition through transition parts.

3. The internal partition structure of a hydraulic oil tank according to claim 2, characterized in that: The side edge of the partition is a bent portion.

4. The internal partition structure of a hydraulic oil tank according to claim 3, characterized in that: The connecting part comprises a first connecting part and a second connecting part with the same structure and an obtuse angle formed therebetween; the connecting part between the first connecting part and the second connecting part is a bent edge, and the angle between the first connecting part and the second connecting part is 125° to 150°.

5. The internal partition structure of a hydraulic oil tank according to claim 4, characterized in that: The transition portion comprises a first transition portion and a second transition portion having the same structure. The first transition portion and the second transition portion are located in the same plane and are both perpendicular to the side wall of the hydraulic oil tank.

6. The internal partition structure of a hydraulic oil tank according to claim 5, characterized in that: The bending portion includes a first bending portion and a second bending portion, the first bending portion is vertically connected to the first transition portion, the second bending portion is vertically connected to the second transition portion, and the first bending portion and the second bending portion extend in opposite directions.

7. The internal partition structure of a hydraulic oil tank according to claim 5, characterized in that: The first transition portion is connected to the first connection portion, and the second transition portion is connected to the second connection portion.

8. The internal partition structure of a hydraulic oil tank according to claim 7, characterized in that: The two low points of the W-shaped structure are located at the top end where the transition portion and the connecting portion are connected.

9. The internal partition structure of a hydraulic oil tank according to claim 4, characterized in that: The middle high point of the W-shaped structure is located at the top of the bending edge, and the high points on both sides are located at the top of the connection between the transition part and the bending part.

10. A hydraulic oil tank, characterized in that: The hydraulic oil tank is provided with an internal partition structure of the hydraulic oil tank as described in any one of claims 1-9.

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