Hydraulic oil tank for narrow excavator and excavator

Abstract

The hydraulic oil tank for the narrow excavator comprises a tank body, the tank body comprises a vertically-arranged U-shaped plate, an L-shaped plate is arranged on one side of the U-shaped plate, an upper opening of the U-shaped plate is plugged by a horizontal part above the L-shaped plate, and a lower opening of the U-shaped plate is plugged by a horizontal part above the L-shaped plate. A straight plate is arranged between the bottom end of the U-shaped plate and the bottom end of the vertical part of the L-shaped plate so as to block an opening formed by the bottom ends of the U-shaped plate and the L-shaped plate, solid mounting plates are arranged on the two sides of the area, where the oil absorption filter seat and the cleaning cover are mounted, of the straight plate, the mounting plates are strip plates, and the two mounting plates are distributed in the width direction of the box body; and the long axis of the mounting plate is arranged along the length direction of the tank body. The hydraulic oil tank provided by the utility model meets the requirement of being mounted on a narrow-body wheel excavator platform.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a hydraulic oil tank for a narrow-body excavator and the excavator. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The hydraulic oil tank used in current excavators is as follows Figure 1-Figure 2 As shown, the oil tank structure is two U-shaped plates butt-welded, and two "J" steels are welded at the bottom of the oil tank to install the oil tank. The "J" steels are arranged along the width direction of the oil tank. However, due to transportation conditions, the right platform of the excavator needs to be narrowed by 200mm to form a narrow-body excavator. Therefore, in order to meet the installation and use requirements of the hydraulic oil tank, the length of the hydraulic oil tank is reduced and the width is increased. If the "J" steels arranged along the width direction are still used, due to the wide width of the "J" steels, they will interfere with the oil suction filter seat and the cleaning cover of the bottom wall of the oil tank. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a hydraulic oil tank for a narrow-body excavator and an excavator, which meet the installation requirements on the right platform of the narrow-body excavator.

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

[0006] In the first aspect, an embodiment of the utility model provides a hydraulic oil tank for a narrow-body excavator, including a box body, the box body including a vertically arranged U-shaped plate, an L-shaped plate is arranged on one side of the U-shaped plate, the upper horizontal portion of the L-shaped plate blocks the upper opening of the U-shaped plate, a straight plate is arranged between the bottom end of the U-shaped plate and the bottom end of the vertical portion of the L-shaped plate to block the opening formed by the U-shaped plate and the bottom end of the L-shaped plate, solid mounting plates are arranged on both sides of the straight plate where the oil suction filter seat and the cleaning cover area are installed, the mounting plates are long strips, the two mounting plates are distributed along the width direction of the box body, and the long axis of the mounting plates is arranged along the length direction of the box body.

[0007] Optionally, two long strip-shaped mounting plates are respectively arranged at the end positions of the straight plate along the width direction of the box body, and are symmetrically arranged relative to the center of the straight plate.

[0008] Optionally, the mounting plate includes a first mounting portion, and second mounting portions are provided on both sides of the first mounting portion. The horizontal cross-section of the first mounting portion is rectangular, and the horizontal cross-section of the second mounting portion is semicircular and protrudes in a direction away from the first mounting portion.

[0009] Optionally, mounting holes are provided at two end positions of the mounting plate.

[0010] Optionally, a groove is provided in the middle of the mounting plate.

[0011] Optionally, the groove is a long strip-shaped groove, and the groove runs through two side surfaces of the mounting plate along the width direction of the mounting plate.

[0012] Optionally, the U-shaped plate includes a vertically arranged first plate portion, the two ends of the first plate portion are respectively vertically connected to the second plate portion and the third plate portion, and the first plate portion, the second plate portion, the third plate portion and the vertical portion of the L-shaped plate are all provided with a recessed area.

[0013] Optionally, the recessed area is arranged at a center position of the first plate portion, the second plate portion, the third plate portion and the vertical portion of the L-shaped plate.

[0014] Optionally, an oil suction filter cover and an oil return filter barrel are installed on the horizontal portion of the L-shaped plate.

[0015] In a second aspect, an embodiment of the present utility model provides an excavator provided with the hydraulic oil tank for the narrow-body excavator described in the first aspect.

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

[0017] 1. The hydraulic oil tank of the utility model adopts a long strip-shaped mounting plate to replace the cross-shaped steel, and the mounting plate is distributed along the width direction of the box body, and the long axis of the mounting plate is arranged along the length direction of the box body. While meeting the strength requirements, the mounting plate does not need to occupy the space on both sides of the bottom of the hydraulic oil tank along the length direction, thereby meeting the installation requirements after the length of the oil tank is reduced and the width is increased, and the mounting plate will not interfere with the cleaning cover and the oil suction filter seat.

[0018] 2. The hydraulic oil tank of the utility model has a box body composed of a vertically arranged U-shaped plate, an L-shaped plate and a straight plate at the bottom. The straight plate is installed with a mounting plate. Compared with the traditional box body which adopts the method of butt welding of two U-shaped plates, the mounting plate is not arranged close to the bending position of the plate, thereby avoiding stress concentration and ensuring the service life of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a schematic diagram of the structure of the existing hydraulic oil tank;

[0021] Figure 2 It is a bottom view of the existing hydraulic oil tank;

[0022] Figure 3 This is a schematic diagram of the overall structure of the first embodiment of the utility model Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the overall structure of the first embodiment of the utility model Figure 2 ;

[0024] Figure 5 This is a bottom view of the overall structure of Embodiment 1 of the utility model;

[0025] Among them, 1. the first plate portion, 2. the second plate portion, 3. the third plate portion, 4. the horizontal portion, 5. the vertical portion, 6. the straight plate, 7. the oil suction filter seat, 8. the cleaning cover, 9. the mounting plate, 10. the bolt, 11. the groove, 12. the recessed area, 13. the oil suction filter cover, and 14. the oil return filter barrel. DETAILED DESCRIPTION

[0026] Example 1

[0027] This embodiment provides a hydraulic oil tank for a narrow-body excavator, such as Figure 3-Figure 5 As shown, it includes a box body. In this embodiment, in order to meet the installation requirements when the right platform of the excavator is narrowed by 200mm, the length of the box body is reduced from 717mm of the hydraulic oil tank for the traditional 20t excavator to 557mm. At the same time, in order to ensure that the internal space meets the requirements, the width of the box body is increased from 342mm of the traditional hydraulic oil tank to 452mm, and the height is 896mm, which is consistent with the height of the traditional hydraulic oil tank.

[0028] The box body is assembled and welded by U-shaped plates, L-shaped plates and straight plates. Specifically:

[0029] The U-shaped plate is vertically arranged, including a first plate portion 1, the first plate portion 1 is vertically arranged, and the second plate portion 2 and the third plate portion 3 are vertically arranged at both ends of the first plate portion 1. Since the U-shaped plate is vertically arranged, the upper and lower ends of the U-shaped plate are open.

[0030] The L-shaped plate includes a horizontal portion 4 and a vertical portion 5 connected vertically, wherein three edges of the horizontal portion 4 are welded and fixed to the upper edges of the first plate portion 1, the second plate portion 2 and the third plate portion 3, so that the horizontal portion 4 blocks the top opening of the U-shaped plate.

[0031] Two vertical edges of the vertical portion 5 are respectively welded and fixed to the vertical edges of the second plate portion 2 and the third plate portion 3 .

[0032] The four edges of the straight plate 6 are respectively welded and fixed to the bottom edges of the first plate portion 1 , the second plate portion 2 , the third plate portion 3 and the vertical portion 5 , so as to seal the opening formed by the bottom end of the U-shaped plate and the vertical portion 5 .

[0033] The U-shaped plate, the L-shaped plate and the straight plate 6 are welded together to form a sealed box structure.

[0034] The straight plate 6 serves as the bottom wall of the box body, and an oil suction filter seat 7 and a cleaning cover 8 are arranged in the middle of the bottom surface. The arrangement of the oil suction filter seat 7 and the cleaning cover 8 can adopt the existing technology and will not be described in detail here.

[0035] Mounting plates 9 are provided on both sides of the oil suction filter seat 7 and the cleaning cover 8. The mounting plates 9 are used to fix the box body on the platform of the loader by bolts.

[0036] In this embodiment, the mounting plate 9 is a solid plate with a long strip structure. The two mounting plates 9 are distributed along the width direction of the box body. The long axis of the mounting plate 9 is set along the length direction of the box body. The two mounting plates 9 are respectively set at the two ends of the straight plate 6 along the width direction, and are symmetrically arranged relative to the center of the straight plate 6. Mounting holes are set at the two ends of the mounting plate 9. The box body can be fixed on the platform of the loader through the mounting holes and bolts 10. The width of the mounting plate 9 matches the size of the mounting hole. Therefore, the overall width of the mounting plate 9 is smaller than the width of the J-shaped steel of the traditional hydraulic oil tank.

[0037] In this embodiment, since the mounting plate 9 is arranged at the two ends of the straight plate along the width direction, it does not occupy the space on both sides along the length direction. It occupies the area increased after the width of the bottom surface of the box is increased. Therefore, after the length of the entire box is shortened, the mounting plate will not interfere with the oil suction filter seat 7 and the cleaning cover 8, meeting the requirements of shortening the length of the box and increasing the width.

[0038] Furthermore, the mounting plate includes a first mounting portion, and second mounting portions are provided at both ends of the first mounting portion, wherein the horizontal cross-section of the first mounting portion is rectangular, and the horizontal cross-section of the second mounting portion is semicircular and protrudes in a direction away from the first mounting portion.

[0039] Furthermore, a groove 11 is provided in the middle of the bottom surface of the mounting plate, that is, a groove 11 is provided in the middle of the bottom surface of the first mounting portion. The groove 11 adopts a long strip structure and runs through two side surfaces of the mounting plate 9 along the width direction.

[0040] In this embodiment, since the mounting holes are arranged at the two ends of the mounting plate 9, the two end positions of the mounting plate 9 need to cooperate with the bolts and have certain roughness requirements and need to be processed. Therefore, in order to reduce the processing cost, a groove 11 is arranged in the middle position of the mounting plate, and the area covered by the groove 11 does not need to be processed, thereby reducing the processing area and reducing the processing cost.

[0041] Since the mounting plate 9 is arranged at the two ends of the bottom surface of the box body in the width direction, if the existing hydraulic oil tank is formed by butt-welding two U-shaped plates, the mounting plate will be close to the bending position of the bottom surface of the lower U-shaped plate, which will cause stress concentration at the bending position and reduce the service life of the hydraulic oil tank. This embodiment overcomes this problem by providing a matching scheme of a straight plate 6, a U-shaped plate and an L-shaped plate, thereby ensuring the structural strength of the entire box body.

[0042] A recessed area 12 is provided at the center of the first plate portion 1, the second plate portion 2, the third plate portion 3 of the U-shaped plate and the vertical portion 5 of the L-shaped plate to prevent the hydraulic oil tank from bulging.

[0043] The horizontal portion 4 of the L-shaped plate is fixed with an oil suction filter cover 13 and an oil return filter barrel 14. The arrangement of the oil suction filter element and the oil return filter barrel can be based on the existing technology, which will not be described in detail here.

[0044] The remaining structure of the hydraulic oil tank can adopt the existing technology and will not be described in detail here.

[0045] Example 2

[0046] This embodiment provides an excavator, which is a narrow-body wheel excavator or a narrow-body crawler excavator, and is provided with the hydraulic oil tank for the narrow-body excavator described in Example 1. The remaining structure of the excavator can adopt the existing technology and will not be described in detail here.

[0047] 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 hydraulic oil tank for a narrow-body excavator, characterized in that: The utility model comprises a box body, which comprises a vertically arranged U-shaped plate, an L-shaped plate is arranged on one side of the U-shaped plate, the upper horizontal part of the L-shaped plate blocks the upper opening of the U-shaped plate, a straight plate is arranged between the bottom end of the U-shaped plate and the bottom end of the vertical part of the L-shaped plate to block the opening formed by the U-shaped plate and the bottom end of the L-shaped plate, and solid mounting plates are arranged on both sides of the straight plate where the oil suction filter seat and the cleaning cover area are installed, the mounting plates are long strips, the two mounting plates are distributed along the width direction of the box body, and the long axis of the mounting plates is arranged along the length direction of the box body.

2. A hydraulic oil tank for a narrow-body excavator as claimed in claim 1, characterized in that: The two long strip-shaped mounting plates are respectively arranged at the end positions of the straight plate along the width direction of the box body and are symmetrically arranged relative to the center of the straight plate.

3. A hydraulic oil tank for a narrow-body excavator as claimed in claim 1, characterized in that: The mounting plate comprises a first mounting portion, with second mounting portions being arranged on both sides of the first mounting portion, the horizontal cross section of the first mounting portion being rectangular, and the horizontal cross section of the second mounting portion being semicircular and protruding in a direction away from the first mounting portion.

4. A hydraulic oil tank for a narrow-body excavator as claimed in claim 1, characterized in that: Two end positions of the mounting plate are provided with mounting holes.

5. The hydraulic oil tank for a narrow-body excavator according to claim 1, characterized in that: A groove is arranged in the middle of the mounting plate.

6. A hydraulic oil tank for a narrow-body excavator as claimed in claim 5, characterized in that: The groove is a long strip groove, and the groove runs through two side surfaces of the mounting plate along the width direction of the mounting plate.

7. A hydraulic oil tank for a narrow-body excavator as claimed in claim 1, characterized in that: The U-shaped plate includes a vertically arranged first plate portion, the two ends of which are vertically connected to the second plate portion and the third plate portion, respectively, and the first plate portion, the second plate portion, the third plate portion and the vertical portion of the L-shaped plate are all provided with recessed areas.

8. A hydraulic oil tank for a narrow-body excavator as claimed in claim 7, characterized in that: The recessed area is arranged at the center of the first plate portion, the second plate portion, the third plate portion and the vertical portion of the L-shaped plate.

9. The hydraulic oil tank for a narrow-body excavator according to claim 1, characterized in that: The horizontal part of the L-shaped plate is equipped with an oil suction filter cover and an oil return filter barrel.

10. An excavator, characterized in that: A hydraulic oil tank for a narrow-body excavator according to any one of claims 1 to 9 is provided.

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