Novel excavator hydraulic oil tank

Abstract

The novel excavator hydraulic oil tank comprises a tank body, the tank body is formed by welding steel plates, a first opening and a second opening are formed in the top of the tank body, and an oil suction opening is formed in the bottom of the tank body; a partition plate is arranged in the box body, the interior of the box body is divided into an oil return area and an oil suction area which are communicated with each other, an oil return barrel used for installing an oil return filter element is arranged in the box body, the oil return barrel is located in the oil return area, an oil outlet is obliquely formed in the bottom of the oil return barrel, and a V-shaped bent part is arranged on the oil outlet and the partition plate and protrudes towards the oil return area; a group of first pressure relief oil return ports are formed in the side surface of the oil return area, are close to the joint of the partition plate and the tank body, and are lower than the upper end surface of the partition plate; an oil return pipe is arranged on the side face of the box body and penetrates through the box body to be communicated with the oil return barrel. The oil tank can effectively optimize oil circulation, prevent impurities and high-temperature oil from influencing the system, enhance the structural stability of the tank body and improve the reliability of the hydraulic system of the excavator.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic equipment, concretely relates to a novel hydraulic tank of excavator. BACKGROUND

[0002] In the operation process of modern excavator, the hydraulic system plays a vital role, and the hydraulic tank as the key component of the hydraulic system, its performance advantage and disadvantage directly influence the stability and reliability of the whole hydraulic system.

[0003] The existing hydraulic tank of excavator exposes some problems in actual use, and most oil tanks lack reasonable zoning design in oil circulation and filtration, although some oil tanks are additionally provided with a baffle, but the simple and single baffle is easy to mix the oil return and oil suction path, the flow direction of oil return area is chaotic, the impurities in oil return and high-temperature oil are easy to be directly sucked into the system, accelerate the wear of system components, and reduce the stability and service life of the system.

[0004] Based on the deep understanding and thinking of the many problems of the traditional excavator hydraulic tank, the present scheme proposes a design of a novel hydraulic tank of excavator. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a novel hydraulic tank of excavator can effectively solve the above -mentioned problem.

[0006] The utility model is realized as follows:

[0007] A novel hydraulic tank of excavator, comprising:

[0008] The tank body is composed of steel plate welding and is provided with a first opening and a second opening at the top and an oil suction port at the bottom.

[0009] A baffle is arranged in the tank body to divide the tank body into a communication oil return area and an oil suction area, an oil return barrel for installing an oil return filter is arranged in the tank body, the oil return barrel is located in the oil return area, an inclined oil outlet is arranged at the bottom of the oil return barrel, a V-shaped bending part is arranged on the baffle and protrudes towards the oil return area.

[0010] A group of first pressure relief oil return ports are arranged on the side of the oil return area, the first pressure relief oil return ports are close to the connection between the baffle and the tank body, and the first pressure relief oil return ports are lower than the upper end surface of the baffle.

[0011] An oil return pipe is arranged on the side of the tank body and communicates with the oil return barrel through the tank body.

[0012] As a further improvement, the baffle is provided with a right-angle bending part at both ends, and the V-shaped bending part has a height X greater than a width Y of the right-angle bending part.

[0013] As a further improvement, the box is composed of a front plate, an upper plate and a rear plate by welding.

[0014] The front plate is L-shaped and has a vertical face and a horizontal face.

[0015] The upper plate has a vertical face and a horizontal face, and a round corner transition is arranged at the joint of the vertical face and the horizontal face.

[0016] The rear plate has two vertical faces perpendicular to each other.

[0017] As a further improvement, two horizontal reinforcing bars are arranged in the box, one is arranged on the vertical face of the front plate, and the other is arranged on the rear half plate of the oil tank, and the two reinforcing bars are symmetrically arranged.

[0018] As a further improvement, a second pressure relief and oil return port is arranged on the side of the box in the oil return area.

[0019] As a further improvement, a liquid level meter is arranged on the side of the box in the oil absorption area.

[0020] As a further improvement, a gap is arranged between the lower end face of the baffle and the box.

[0021] As a further improvement, a flange seat is arranged below the oil suction port for detachably connecting an oil suction pipe.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. The baffle in the box divides it into an oil return area and an oil absorption area, the oil return barrel in the oil return area can concentrate and filter the returned oil, the inclined oil outlet is beneficial to the discharge of oil, and when the oil flows from the first pressure relief and oil return port to the oil tank at high speed, the V-shaped bending part is encountered, the V-shaped bending part can guide the oil to flow away from the oil absorption area, the oil in the oil tank forms a regular flow in the oil return area, the circulation effect of the oil in the box is enhanced, the bubble rising time in the oil is increased, the impurities in the oil are first deposited in the oil return area, and then the oil enters the oil absorption area, the returned oil is not directly sucked into the system, the influence of impurities and high-temperature oil on the system is reduced, and the system stability is improved.

[0024] 2、In the production process, the partition plate needs to be welded on the inner side of the box body, which requires strict control of the size accuracy of each plate of the entire box body. Since the partition plate is provided with a V-shaped bending part, the structure makes the partition plate have certain collapse or extension characteristics in the width direction during assembly and welding, that is, it can be widened or shortened. When welding, the width of the partition plate can be appropriately set as an interference size. When welding is performed, the partition plate is compressed, at which time the partition plate provides outward supporting force to the inner side of the box body. This supporting force can effectively prevent the box body from being deformed and concave due to internal pressure or external impact, thereby ensuring the stability and reliability of the box body structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 is a schematic diagram of the overall structure provided by the embodiments of the present application.

[0027] Figure 2 is a partial sectional view provided by the embodiments of the present application.

[0028] Figure 3 is a schematic diagram of the partition plate structure provided by the embodiments of the present application.

[0029] Figure 4 is a schematic diagram of the internal structure provided by the embodiments of the present application.

[0030] Reference signs:

[0031] 1, box body; 11, first pressure relief oil return port; 12, oil return area; 13, oil suction area; 14, oil suction port; 15, second opening; 16, first opening; 17, second pressure relief oil return port; 101, front plate; 102, upper plate; 103, rear plate; 2, oil return pipe; 3, second flange cover plate; 4, first flange cover plate; 5, breather valve; 6, liquid level gauge; 7, partition plate; 71, V-shaped bending part; 72, right-angle bending part; 8, oil return bucket; 9, reinforcing strip; 10, flange seat. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application.

[0033] In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] Referring to Figures 1-4 A novel excavator hydraulic oil tank, comprising:

[0035] The tank body 1 is composed of steel plates and has a first opening 16 and a second opening 15 at the top. A first flange cover plate 4 is arranged on the first opening 16, and a second flange cover plate 3 is arranged on the second opening 15. A breather valve 5 is installed on the first flange cover plate 4. An oil suction port 14 is arranged at the bottom of the tank body 1. An oil suction filter element is arranged above the oil suction port 14 and is connected to the lower end surface of the first flange cover plate 4 through a connecting rod.

[0036] A partition plate 7 is arranged in the tank body 1 to divide the tank body 1 into a communication oil return area 12 and an oil suction area 13. An oil return bucket 8 for installing an oil return filter element is arranged in the tank body 1. The oil return bucket 8 is located in the oil return area 12. An inclined oil outlet is arranged at the bottom of the oil return bucket 8. A V-shaped bending part 71 is arranged on the partition plate 7 and protrudes towards the oil return area 12.

[0037] A group of first pressure relief oil return ports 11 are arranged on the side of the oil return area 12 and are mainly used for connecting the pressure relief return circuit of the distribution valve. When the excavator performs a composite action, multiple actuators work at the same time, and the pressure relief return flow of the distribution valve may be superimposed. The total flow of the port is large. The first pressure relief oil return port 11 is close to the connection between the partition plate 7 and the tank body 1, and the first pressure relief oil return port 11 is lower than the upper end surface of the partition plate 7.

[0038] The side of the box 1 is provided with an oil return pipe 2, which communicates with an oil return bucket 8 through the box 1, and then flows into the oil return area 12 through the oil filter element in the oil return bucket 8.

[0039] Specifically, the baffle 7 is provided with a right-angle bending part 72 at both ends, and the V-shaped bending part 71 has a protrusion height X greater than the width Y of the right-angle bending part 72. The right-angle bending part 72 is used to increase the contact area with the inner side of the box 1, and has higher structural strength when welding on both sides. In addition, the protrusion height X of the V-shaped bending part 71 is greater than the width Y of the right-angle bending part 72. Since the first pressure relief oil return port 11 is close to the baffle 7, it is avoided to be displaced to the edge after being affected by the right-angle bending part 72, thereby reducing the effect of the V-shaped bending part 71.

[0040] Specifically, according to the specific structure of the box 1, the box 1 is composed of a front plate 101, an upper plate 102, and a rear plate 103. The front plate 101 is L-shaped and has a vertical face and a horizontal face. The upper plate 102 has a vertical face and a horizontal face, and a round corner transition is arranged at the connection between the vertical face and the horizontal face, which optimizes the appearance and effectively reduces stress concentration, thereby improving the durability of the box 1. The rear plate 103 has two vertical faces perpendicular to each other. Reducing the number of plate parts of the box 1 can avoid too many welds, which affects the structural strength and sealing performance of the box 1.

[0041] Specifically, two horizontal reinforcing bars 9 are arranged on the inner side of the box 1, one on the vertical face of the front plate 101 and the other on the rear half plate of the oil tank, and the two reinforcing bars 9 are symmetrically arranged. The existence of the reinforcing bars 9 significantly enhances the overall strength of the box 1, avoids concave or convex, and enables it to withstand greater pressure and impact force, thereby ensuring the safety and reliability of the oil tank in complex working environments.

[0042] Specifically, a group of second pressure relief oil return ports 17 are arranged on the side of the box 1 in the oil return area 12, which are used to connect the pressure relief oil return of other oil circuits.

[0043] Specifically, a liquid level meter 6 is arranged on the side of the box 1 in the oil absorption area 13. The liquid level meter 6 can display the liquid level of the hydraulic oil in the oil tank in real time, so that the operator can know the oil storage in the oil tank in time, so as to supplement the hydraulic oil in time when needed, and avoid hydraulic system failure due to low oil level.

[0044] Specifically, a gap is arranged between the lower end face of the baffle 7 and the box 1, which is convenient for cleaning the oil tank. Generally, the gap is smaller than the height of the first pressure relief oil return port 11, which can avoid the oil injected from the first pressure relief oil return port 11 directly flowing into the oil absorption area 13 through the gap.

[0045] Specifically, a flange seat 10 is arranged below the oil suction port 14, which is used for detachable connection of the oil suction pipe, and is convenient for subsequent cleaning and maintenance. If the oil outlet pipe is directly welded on the bottom of the oil tank, it is not convenient for cleaning and maintenance.

[0046] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A novel hydraulic oil tank for excavators, characterized by, The utility model relates to an oil tank, comprising: a box (1) which is welded by steel plates and is provided with a first opening (16) and a second opening (15) at the top and an oil suction port (14) at the bottom; a partition plate (7) is arranged in the box (1) to divide the box (1) into an oil return area (12) and an oil suction area (13) in communication, an oil return barrel (8) for mounting an oil return filter element is arranged in the box (1), the oil return barrel (8) is located in the oil return area (12), an oil outlet is arranged at the bottom of the oil return barrel (8) and is inclined, a V-shaped bending part (71) is arranged on the partition plate (7) and protrudes towards the oil return area (12); a group of first pressure relief oil return ports (11) are arranged on the side of the oil return area (12), the first pressure relief oil return ports (11) are close to the connection between the partition plate (7) and the box (1), and the first pressure relief oil return ports (11) are lower than the upper end surface of the partition plate (7); an oil return pipe (2) is arranged on the side of the box (1) and communicates with the oil return barrel (8).

2. A novel hydraulic tank for excavators according to claim 1, characterized in that, straight bending parts (72) are arranged at both ends of the partition plate (7), and the protrusion height X of the V-shaped bending part (71) is greater than the width Y of the straight bending part (72).

3. The novel hydraulic oil tank for excavator according to claim 1, characterized in that, the box (1) is welded by a front plate (101), an upper plate (102) and a rear plate (103); the front plate (101) is L-shaped and has a vertical surface and a horizontal surface; the upper plate (102) has a vertical surface and a horizontal surface, and a round corner transition is arranged at the connection between the vertical surface and the horizontal surface; the rear plate (103) has two vertical surfaces which are perpendicular to each other.

4. The novel hydraulic oil tank for excavator according to claim 3, characterized in that, two horizontal reinforcing strips (9) are arranged in the box (1), one of the reinforcing strips (9) is arranged on the vertical surface of the front plate (101), and the other reinforcing strip (9) is arranged on the rear half plate of the oil tank, and the two reinforcing strips (9) are symmetrically arranged.

5. The novel hydraulic oil tank for excavator according to claim 1, wherein a group of second pressure relief oil return ports (17) are arranged on the side of the box (1) in the oil return area (12).

6. A novel hydraulic tank for excavators as claimed in claim 1, wherein, a liquid level meter (6) is arranged on the side of the box (1) in the oil suction area (13).

7. A novel hydraulic tank for excavators as claimed in claim 1, wherein, a gap is arranged between the lower end surface of the partition plate (7) and the box (1).

8. A novel hydraulic tank for excavators as claimed in claim 1, wherein, a flange seat (10) is arranged below the oil suction port (14) and is used for detachably connecting an oil suction pipe.

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