Excavator hydraulic oil tank

Abstract

The utility model discloses a kind of hydraulic oil tank of excavator. Hydraulic oil tank of excavator, comprising: tank, the valve body is equipped in the tank;The tank includes shell, the inside of shell is divided into two chambers by partition, the lowermost end of the partition is used for the oil pipe of hydraulic oil passing, the valve body is equipped at the pipe orifice of oil pipe, the valve body can control the opening and closing of oil pipe;The valve body includes the cover plate sealed in the pipe orifice of oil pipe, the cover plate is hinged with oil pipe, drive assembly can control cover plate rotation. The hydraulic oil tank of excavator provided by the utility model realizes the effect that hydraulic oil flows from the bottom of shell by setting sleeve and oil pipe, reduces the contact of hydraulic oil with air during flowing from oil return pipe and in shell, thereby reducing the mixing of air in hydraulic oil, conducive to the normal work of hydraulic system.

Description

Technical Field

[0001] This utility model relates to the field of liquid container technology, and in particular to a hydraulic oil tank for engineering machinery equipment. Background Technology

[0002] Hydraulic oil tanks are an important component of hydraulic systems. Their main function is to store sufficient hydraulic fluid to meet the system's operational needs. The tank's design also helps dissipate heat generated during system operation, maintaining the oil temperature within a suitable range. Furthermore, the tank removes air bubbles and impurities from the oil through sedimentation and filtration, ensuring oil cleanliness and thus improving the reliability and efficiency of the hydraulic system. Additionally, the tank can serve as an installation platform, integrating auxiliary components such as coolers, heaters, and air filters to support the stable operation of the hydraulic system.

[0003] The existing technology discloses a dustproof, heat-absorbing, and energy-storing hydraulic oil tank, comprising a tank body, a connecting column connected to the top of the tank body, a rotating column connected to the top of the connecting column, a cover plate connected to the top of the rotating column, a filter plate connected to the bottom of the cover plate, a water pump connected to the bottom of the inner wall of the tank, a suction pipe connected to one end of the water pump, an oil outlet pipe connected to the other end of the water pump, a heat-absorbing energy storage device connected to the bottom of the inner wall of the tank on the side of the water pump, and a temperature controller connected to one side of the inner wall of the tank. In this invention, by setting the filter plate and the cover plate, the hydraulic oil tank can effectively isolate external dust and improve the quality of the hydraulic oil. By setting the temperature controller and the heat-absorbing energy storage device, the heat generated during the operation of the hydraulic system can be absorbed and converted, and the temperature inside the oil tank can be maintained to avoid affecting the normal operation of the hydraulic system.

[0004] After the hydraulic oil enters the hydraulic tank from the return oil pipe, the hydraulic oil is relatively viscous and easily traps air when it comes into contact with the hydraulic oil in the tank. This can cause potential problems such as poor transmission when the hydraulic oil re-enters the hydraulic equipment.

[0005] Therefore, it is necessary to provide an excavator hydraulic oil tank to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides an excavator hydraulic oil tank that can optimize the flow path of hydraulic oil in the tank and reduce the mixing of air into the hydraulic oil.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] The hydraulic oil tank for an excavator includes: a tank body, wherein a valve body is provided inside the tank body;

[0009] The housing includes an outer shell, the interior of which is divided into two chambers by a partition. The bottom of the partition is used for an oil supply pipe through which hydraulic oil passes. A valve body is provided at the inlet of the oil supply pipe, and the valve body can control the opening and closing of the oil supply pipe.

[0010] The valve body includes a cover plate that is sealed at the inlet of the oil pipeline. The cover plate is hinged to the oil pipeline, and the drive assembly can control the rotation of the cover plate.

[0011] Preferably, the cover plate is magnetic and can be adsorbed onto the inlet of the oil pipeline, and the drive assembly includes a soft rope mounted on the cover plate, with the other end of the soft rope mounted on a float.

[0012] Preferably, a plurality of heat dissipation plates are provided perpendicular to the bottom of the outer casing, with a portion of the heat dissipation plates located on the inner wall of the outer casing and a portion located on the outer wall of the outer casing.

[0013] Preferably, the outer casing is further provided with an oil return pipe, and the oil return pipe is provided with a sleeve that is closed on all four sides, and a buffer cover is installed at the bottom of the sleeve.

[0014] Preferably, the outer shell sidewall is provided with a first slag discharge hole, and the valve body is installed inside the outer shell on the sidewall provided with a second slag discharge hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This utility model achieves the effect of hydraulic oil flowing from the bottom of the outer shell by setting a sleeve and an oil supply pipe, reducing the contact between hydraulic oil and air during the flow of hydraulic oil from the return oil pipe and in the outer shell, thereby reducing the mixing of air in the hydraulic oil and facilitating the normal operation of the hydraulic system.

[0017] (2) The present invention can increase the contact area with hydraulic oil through the heat dissipation plate, which facilitates the dissipation of heat from the hydraulic oil in the left chamber of the outer shell;

[0018] (3) When the hydraulic oil is discharged from the return oil pipe, the hydraulic oil passes through the buffer cover and enters the outer shell. During this process, the hydraulic oil is blocked by the buffer cover, the speed is slowed down, and the oil enters the outer shell more smoothly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the excavator hydraulic oil tank provided by this utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the hydraulic oil tank for an excavator provided by this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] The corresponding names of the reference numerals in the attached drawings are as follows: 10, housing; 11, partition plate; 12, return oil pipe; 121, filter; 13, sleeve; 131, buffer cover; 14, oil supply pipe; 15, outer shell; 151, first slag discharge hole; 152, second slag discharge hole; 153, oil inlet pipe; 16, heat dissipation plate; 20, valve body; 21, cover plate; 211, pull ring; 22, float ball; 23, soft rope. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0024] The hydraulic oil tank serves as a "transfer station" for hydraulic oil in a hydraulic system. The hydraulic oil in hydraulic equipment circulates during operation, and the hydraulic oil tank receives incoming hydraulic oil and supplies hydraulic oil to the circuits. The return line plays a crucial role, responsible for returning excess hydraulic oil from various system components back to the tank. This process helps maintain oil pressure balance within the system, preventing component damage or system malfunctions caused by excessive oil pressure. Secondly, the return line reduces oil consumption by returning unused hydraulic oil to the tank, avoiding oil waste. Furthermore… The return oil pipe also helps the system dissipate heat. Hydraulic oil absorbs heat during circulation, and when it returns to the oil tank through the return oil pipe, it can dissipate some of the heat, lower the oil temperature, and ensure the stable operation of the system. The inventors discovered that the return oil pipe is located at the top of the oil tank. After the hydraulic oil flows out of it, it enters the air and then mixes with the hydraulic oil in the oil tank under the action of gravity. Just like water being poured into a basin from a height, air bubbles are produced. Air is mixed into the hydraulic oil during this process, which leads to a deterioration in the mechanical transmission effect. If the oil circuit is changed to reduce the mixing of air, this drawback can be effectively alleviated.

[0025] First embodiment:

[0026] like Figure 1 As shown, the hydraulic oil tank for excavators provided by this utility model includes: a tank body 10 for storing hydraulic oil, and a valve body 20 is provided inside the tank body 10. The function of the valve body 20 is to control the flow of hydraulic oil from the tank body 10.

[0027] Specifically, such as Figure 1 As shown, the housing 10 includes a rectangular outer shell 15, and the interior of the outer shell 15 is a cavity, as... Figure 2The cavity inside the outer shell 15 shown is divided into two chambers by a partition 11. A return oil pipe 12 is installed at the upper end of the left half of the outer shell 15. A filter 121 for filtering impurities in the hydraulic oil is provided in the return oil pipe 12. The hydraulic oil enters the left half of the cavity from the hydraulic system through the return oil pipe 12. A through hole is opened at the bottom of the partition 11. An oil supply pipe 14 for hydraulic oil to pass through is welded and fixed at the through hole. Therefore, the hydraulic oil in the left half of the cavity can enter the right half of the cavity from the oil supply pipe 14. An oil inlet pipe 153 is fixedly installed at the bottom of the right half of the outer shell 15. The oil inlet pipe 153 outputs the hydraulic oil from the right half. The output hydraulic oil enters various parts of the hydraulic system. In addition, in order to control the hydraulic oil to enter the right cavity from the oil supply pipe 14, a valve body 20 is provided at the pipe opening of the oil supply pipe 14. The valve body 20 can control the opening and closing of the oil supply pipe 14.

[0028] Specifically, such as Figure 2-3 As shown, the valve body 20 includes a cover plate 21 that seals the opening of the oil supply pipe 14. The cover plate 21 is hinged to the oil supply pipe 14, and the hinge point is located at the upper half of the cover plate 21 and the oil supply pipe 14. Magnets are fixed to both the cover plate 21 and the oil supply pipe 14, making the connection point magnetic and achieving mutual attraction. A pull ring 211 is fixedly installed on the lower half of the surface of the cover plate 21. The pull ring 211 is shaped as shown in the figure. Figure 3 As shown, a soft rope 23 is attached to the pull ring 211, and a float 22 is attached to the other end of the soft rope 23. The shape of the float 22 is as follows: Figure 2 As shown, the internally hollow square shell floats on the surface of the hydraulic oil. When the hydraulic oil enters the left cavity from the return pipe 12, the hydraulic oil level rises, increasing the buoyancy of the float 22. The float 22 pulls and tightens the soft rope 23, which exerts an upward force on the cover plate 21. As the hydraulic oil level continues to rise, the buoyancy of the float 22 continues to increase, and the force of the soft rope 23 on the cover plate 21 becomes even greater. This continues until the upward force of the soft rope 23 on the cover plate 21 exceeds the weight of the cover plate 21 and the attraction between the cover plate 21 and the oil supply pipe 14, causing the cover plate 21 to open. Due to the pressure difference between the left and right sides of the liquid surface, the hydraulic oil on the left side enters the right cavity from the oil supply pipe 14. Conversely, when the hydraulic oil level on the left side drops, the float 22 also moves further down with the liquid level until the liquid level drops to the point where the cover plate 21 covers the opening of the oil supply pipe 14, preventing the hydraulic oil from entering the oil supply pipe 14. This cycle continues.

[0029] In addition, it should be noted that, such as Figure 2 As shown, a cylindrical sleeve 13 is provided around the return oil pipe 12. The upper end of the sleeve 13 is welded to the inner wall of the upper end of the outer shell 15 of the housing 10, and the lower end has an opening that extends downward to a position below the hydraulic oil level. In this way, the hydraulic oil flowing out of the return oil pipe 12 can directly flow into the hydraulic oil stored in the outer shell 15.

[0030] By setting up sleeve 13 and oil supply pipe 14, the hydraulic oil can flow from the bottom of housing 15, reducing the contact between the hydraulic oil and air during the flow of hydraulic oil from return pipe 12 and in housing 15, thereby reducing the mixing of air into the hydraulic oil and facilitating the normal operation of the hydraulic system.

[0031] Second embodiment:

[0032] like Figure 2 As shown, several heat dissipation plates 16 are welded and fixed to the bottom of the outer shell 15 and perpendicular to its surface. The heat dissipation plates 16 are sheet-like structures, with one part located on the inner wall of the outer shell 15 and the other part located on the outer wall of the outer shell 15.

[0033] The heat sink 16 increases the contact area with the hydraulic oil, making it easier to dissipate the heat of the hydraulic oil in the left chamber of the outer casing 15.

[0034] Third embodiment:

[0035] like Figure 2 As shown, a buffer cover 131 is fixedly installed at the bottom of the sleeve 13. The buffer cover 131 is cylindrical and fits around the bottom of the sleeve 13. It is composed of multiple vertical cylindrical strips. When the hydraulic oil is discharged from the return oil pipe 12, the hydraulic oil passes through the buffer cover 131 and enters the outer shell 15. During this process, the hydraulic oil is blocked by the buffer cover 131, which slows down the speed and makes it more stable when entering the outer shell 15.

[0036] Fourth embodiment:

[0037] like Figure 1 As shown, the outer casing 15 has a first slag discharge hole 151 on its side wall, and a second slag discharge hole 152 is provided on the side wall of the valve body 20 installed inside the outer casing 15. Both the first slag discharge hole 151 and the second slag discharge hole 152 are fixedly installed with sealing plates by means of flange connection. After removing the sealing plates, the deposited impurities in the hydraulic oil inside the outer casing 15 are cleaned from the first slag discharge hole 151 and the second slag discharge hole 152.

[0038] Working principle: When hydraulic oil enters the left cavity from the return oil pipe 12, the hydraulic oil level rises, and the buoyancy received by the float 22 increases. The float 22 pulls and tightens the soft rope 23, and the soft rope 23 exerts an upward pulling force on the cover plate 21. As the hydraulic oil level continues to rise, the buoyancy received by the float 22 continues to increase, and the pulling force of the soft rope 23 on the cover plate 21 becomes even greater, until the upward pulling force of the soft rope 23 on the cover plate 21 exceeds the weight of the cover plate 21 itself and the attraction between the cover plate 21 and the oil supply pipe 14, etc., and the cover plate 21 opens. Due to the pressure difference between the liquid levels on the left and right sides, the hydraulic oil on the left side enters the right cavity from the oil supply pipe 14.

[0039] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A hydraulic oil tank for an excavator, characterized in that, include: Box (10), wherein a valve body (20) is provided inside the box (10); The housing (10) includes an outer shell (15), the interior of which is divided into two chambers by a partition (11). The lowest end of the partition (11) is used for the oil supply pipe (14) through which hydraulic oil passes. A valve body (20) is provided at the opening of the oil supply pipe (14), and the valve body (20) can control the opening and closing of the oil supply pipe (14). The valve body (20) includes a cover plate (21) that is sealed at the opening of the oil pipeline (14). The cover plate (21) is hinged to the oil pipeline (14), and the drive assembly can control the rotation of the cover plate (21).

2. The excavator hydraulic oil tank according to claim 1, characterized in that, The cover plate (21) is magnetic and can be attached to the opening of the oil pipeline (14). The drive assembly includes a soft rope (23) mounted on the cover plate (21), with the other end of the soft rope (23) mounted on a float (22).

3. The excavator hydraulic oil tank according to claim 1 or 2, characterized in that, A plurality of heat dissipation plates (16) are provided perpendicular to the bottom of the outer shell (15). Part of the heat dissipation plates (16) are located on the inner wall of the outer shell (15), and part of them are located on the outer wall of the outer shell (15).

4. The excavator hydraulic oil tank according to claim 3, characterized in that, The outer shell (15) is also provided with an oil return pipe (12), and a sleeve (13) with four sides closed is provided at the oil return pipe (12). A buffer cover (131) is installed at the bottom of the sleeve (13).

5. The excavator hydraulic oil tank according to claim 4, characterized in that, The outer shell (15) has a first slag discharge hole (151) on its side wall, and the valve body (20) installed inside the outer shell (15) has a second slag discharge hole (152) on its side wall.

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