CN211144992U

CN211144992U - Liquid level adjusting device and excavator

Info

Publication number: CN211144992U
Application number: CN201922483730.2U
Authority: CN
Inventors: 马先锋; 钟佩文; 薛庆涛
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-31
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a liquid level control device and excavator relates to engineering apparatus technical field, and liquid level control device includes first casing, and first casing rotates and installs in the oil tank inner chamber to hydraulic oil in the splendid attire oil tank, when the oil tank inclines, first casing and oil tank rotate relatively, and can prevent the hydraulic oil in the first casing to flow into the oil tank, so that the liquid level of hydraulic oil is higher than the liquid level of hydraulic oil in the oil tank in the first casing. The technical problems that hydraulic oil overflows and bubbles are generated due to the fact that the inclination angle of an oil tank of the excavator in the prior art is too large are solved.

Description

Liquid level adjusting device and excavator

Technical Field

The utility model relates to an engineering apparatus technical field particularly, relates to a liquid level adjusting device and excavator.

Background

The hydraulic oil tank of the excavator has strict requirements on liquid level, and in order to prevent bubbles from generating and corroding hydraulic elements, the lowest liquid level must be higher than an oil return port and a breather valve; if the liquid level is higher than the breather valve, the hydraulic oil can be sprayed out of the oil tank through the breather valve. For the reasons described above, the maximum tilt angle of the excavator is generally around 30 °. However, under a special working condition, the inclination angle of the excavator exceeds 30 degrees, and under the working condition, hydraulic oil is easy to flow out of the oil tank through the breather valve, so that not only is the waste of the hydraulic oil caused, but also the construction period is easy to delay; in addition, the hydraulic oil may be sucked to be empty after overflowing, so that bubbles are generated, and the service life and the performance of the hydraulic component are further influenced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a liquid level adjusting device and excavator to alleviate the oil tank of the excavator among the prior art and lead to hydraulic oil to spill over and the technical problem who produces the bubble because of inclination is too big easily.

In a first aspect, an embodiment provides a liquid level adjusting device, including a first housing;

first casing rotates to be installed in the oil tank inner chamber to and be used for the splendid attire hydraulic oil in the oil tank, when the oil tank inclines, first casing with the oil tank relative rotation to can prevent hydraulic oil in the first casing flows into the oil tank, so that the liquid level of hydraulic oil is higher than in the first casing the liquid level of hydraulic oil in the oil tank.

In an optional embodiment, the liquid level adjusting device further comprises a second housing, the second housing is mounted in an inner cavity of the oil tank, and the second housing is provided with a second oil port communicated with the inner cavity of the oil tank; the first shell is rotatably arranged on the second shell and is provided with a first oil port;

when the oil tank is horizontal, the second oil port is communicated with the first oil port, and when the oil tank is inclined, the second shell and the first shell rotate relatively and can prevent hydraulic oil in the first shell from flowing into the oil tank.

In an alternative embodiment, the second casing is pivoted to the oil tank, the first casing is pivoted to the second casing, and an axial direction of a pivot shaft between the second casing and the oil tank and an axial direction of a pivot shaft between the second casing and the first casing are disposed at an angle.

In an optional embodiment, the liquid level adjusting apparatus further includes a first shaft and a first bearing, the first shaft and the first bearing are in interference fit, and one of the first shaft and the first bearing is fixedly connected to the second housing, and the other is fixedly connected to the first housing.

In an optional embodiment, the liquid level adjusting device further includes a second shaft and a second bearing, the second shaft and the second bearing are in interference fit, one of the second shaft and the second bearing is fixedly connected to the second housing, and the other one of the second shaft and the second bearing is fixedly connected to the oil tank.

In an alternative embodiment, the second bearing is fixedly connected to an upper end surface of the second housing.

In an alternative embodiment, the axial direction of the first shaft and the axial direction of the second shaft are perpendicular to each other.

In an optional embodiment, the second housing and the first housing are both hemispherical structures, and the first housing is in plug-in fit with the second housing.

In an optional embodiment, the upper end surface of the first housing is a horizontal surface, and the first oil port is disposed at the lowest point of the first housing.

In a second aspect, embodiments provide an excavator comprising a tank and a fluid level adjustment device as described in any one of the preceding embodiments.

Compared with the prior art, the technical effects of the liquid level adjusting device and the excavator provided by the embodiment are as follows:

the utility model provides a liquid level adjusting device, including the first casing, wherein, the first casing rotates and installs in the inner chamber of oil tank, when splendid attire hydraulic oil in the oil tank, also splendid attire hydraulic oil in the first casing, when the oil tank took place to incline, the first casing passed through and takes place relative rotation with the oil tank, basically not take place to incline, wherein hydraulic oil can not flow into in the oil tank again basically, the first casing at this moment can have more parts to bulge in the top of the hydraulic oil in the oil tank, the liquid level of hydraulic oil in the first casing is higher than the liquid level of hydraulic oil in the oil tank, compare all hydraulic oil all be located the oil tank, the liquid level of hydraulic oil in the oil tank is lower, when the oil tank inclination is bigger, more difficult to take place the liquid level and exceed the breather valve in the top of oil tank and lead to the hydraulic oil to overflow, the waste of hydraulic oil has effectively been avoided, the service life and the performance of the hydraulic component are ensured.

The utility model provides a technical advantage of excavator is the same with above-mentioned liquid level regulating device's technological effect, and here is no longer repeated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic structural view of a liquid level adjusting device provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle of the liquid level adjusting device according to the embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of an excavator according to an embodiment of the present invention when an oil tank is horizontal;

fig. 4 is a schematic view of a partial structure of an excavator according to an embodiment of the present invention when an oil tank is inclined.

Icon: 10-a first housing; 20-a second housing; 30-a fuel tank; 40-a breathing valve; 50-a first shaft; 60-a first bearing; 70-a second axis; 80-a second bearing;

11-first oil port.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The liquid level adjusting device provided by the embodiment comprises a first shell 10, wherein the first shell 10 is rotatably installed in an inner cavity of an oil tank 30, when the oil tank 30 is filled with hydraulic oil, the first shell 10 is also filled with hydraulic oil, when the oil tank 30 inclines, the first shell 10 rotates relative to the oil tank 30 and does not incline basically, the hydraulic oil in the first shell does not flow into the oil tank 30 any more, at this time, more parts of the first shell 10 can protrude above the hydraulic oil in the oil tank 30, the liquid level of the hydraulic oil in the first shell 10 is higher than that of the hydraulic oil in the oil tank 30, compared with the situation that all the hydraulic oil is located in the oil tank 30, the liquid level of the hydraulic oil in the oil tank 30 is lower, when the oil tank 30 is larger, the phenomenon that the liquid level exceeds a breather valve 40 at the top of the oil tank 30 to cause overflow of the hydraulic oil is less likely to occur, meanwhile, the phenomenon that air is absorbed by hydraulic oil when the hydraulic oil overflows to generate bubbles is effectively avoided, and the service life and the performance of hydraulic components are guaranteed.

It should be noted that when the oil tank 30 is in a horizontal state, most of the first casing 10 is located below the hydraulic oil level of the oil tank 30, and the hydraulic oil level therein is preferably equal to the hydraulic oil level in the oil tank 30, at this time, when the oil tank 30 tilts, the hydraulic oil level in the first casing 10 remains unchanged, the hydraulic oil level in the oil tank 30 decreases, and when the hydraulic oil contacts the breather valve 40, the oil tank 30 can tilt by a larger angle than 30 °, so that the excavator can work under more complicated working conditions, and the smooth progress of the construction period is ensured. At this time, the first casing 10 may have a polygonal prism shape, a cylindrical shape, a spherical shape, or other shapes, and its opening may be disposed at the top or near the sidewall of the top, so that it is only necessary to ensure that the opening is higher than the hydraulic oil level of the oil tank 30 when the oil tank 30 is in a horizontal state or starts to tilt.

Specifically, the present embodiment further provides the following detailed description of the specific structure of the liquid level adjusting device.

Referring to fig. 1 to 4, in the present embodiment, the liquid level adjusting device further includes a second housing 20, the second housing 20 is mounted in the inner cavity of the oil tank 30, and the second housing 20 is provided with a second oil port communicated with the inner cavity of the oil tank 30; the first shell 10 is rotatably mounted on the second shell 20, and the first shell 10 is provided with a first oil port 11; the second port communicates with the first port 11 when the oil tank 30 is horizontal, and the second housing 20 and the first housing 10 relatively rotate when the oil tank 30 is inclined, and can prevent hydraulic oil in the first housing 10 from flowing into the oil tank 30.

Specifically, it is preferable that the first housing 10 and the second housing 20 are both provided with openings at upper ends when the oil tank 30 is in a horizontal state, the outer surface of the first housing 10 can be in contact with the inner surface of the second housing 20 in an attaching manner, when the oil tank 30 is in a horizontal state, the first oil port 11 is communicated with the second oil port, and hydraulic oil in the oil tank 30 can flow into the first housing 10 from the first oil port 11 and the second oil port, so that the liquid level height of the hydraulic oil in the oil tank 30 is equal to the liquid level height of the hydraulic oil in the first housing 10 (in this case, the case that the opening of the first housing 10 is higher than the hydraulic oil in the oil tank 30 is taken as an example for; when the oil tank 30 inclines, relative rotation takes place for first casing 10 and second casing 20, dislocation takes place for first hydraulic fluid port 11 and second hydraulic fluid port, intercommunication between the two is broken off, hydraulic oil in the oil tank 30 and the hydraulic oil in the first casing 10 can not circulate each other, the hydraulic oil liquid level of first casing 10 is obviously higher than the hydraulic oil liquid level in the oil tank 30, hydraulic oil in the oil tank 30 is more difficult for not having breather valve 40 and leading to overflowing, the extravagant possibility with the production bubble of hydraulic oil has effectively been avoided, the excavator also can have bigger inclination simultaneously, can adapt to more complicated operating mode, the adaptability is stronger.

In this embodiment, the second casing 20 is pivoted to the oil tank 30, the first casing 10 is pivoted to the second casing 20, and the axial direction of the pivot shaft between the second casing 20 and the oil tank 30 and the axial direction of the pivot shaft between the second casing 20 and the first casing 10 are disposed at an angle.

Specifically, the advancing direction of the excavator is taken as the length direction, the axial direction of the pivot shaft between the second housing 20 and the oil tank 30 is preferably the length direction of the excavator, at this time, when the length direction of the excavator inclines, the second housing 20 can incline along with the oil tank 30, the axial direction of the pivot shaft between the second housing 20 and the oil tank 30 is further set to form an angle with the axial direction of the pivot shaft between the second housing 20 and the first housing 10, so that when the length direction of the excavator inclines, the first housing 10 and the second housing 20 can rotate relatively, and when the communication between the first oil port 11 and the second oil port is cut off, the first housing 10 is also ensured to be in a state with an upward opening at all times.

Alternatively, the second housing 20 may be fixedly mounted to the inner cavity of the oil tank 30.

In this embodiment, the liquid level adjusting apparatus further includes a first shaft 50 and a first bearing 60, the first shaft 50 and the first bearing 60 are in interference fit, and one of the two is fixedly connected to the second housing 20, and the other is fixedly connected to the first housing 10.

Specifically, the first shaft 50 and the first bearing 60 are both provided with two sets, preferably, two first bearings 60 are arranged on the upper end surface of the first casing 10, the two first bearings 60 are respectively arranged on two sides of the first casing 10 and are coaxially arranged, the two first shafts 50 are fixedly connected on the upper end surface of the second casing 20 and are coaxially arranged with the first bearings 60, the arrangement ensures that the first casing 10 can rotate at a larger angle relative to the second casing 20, the first casing 10 and the second casing 20 are effectively ensured to be kept in an approximate mutual laminating state all the time, and the condition that the gap between the two is too large to cut off the communication between the oil tank 30 and the first casing 10 is avoided.

Preferably, the first housing 10 is capable of rotating 360 ° about the first axis 50 relative to the second housing 20.

It should be noted that the first bearing 60 may be fixed to the first housing 10 through a bearing seat, or its outer ring may be directly welded to the first housing 10.

In this embodiment, the liquid level adjusting apparatus further includes a second shaft 70 and a second bearing 80, the second shaft 70 and the second bearing 80 are in interference fit, one of the two is fixedly connected to the second housing 20, and the other is fixedly connected to the oil tank 30.

Specifically, the number of the second shafts 70 and the number of the second bearings 80 are two, the two second bearings 80 are fixedly connected to the second housing 20 and are coaxially arranged, and the two second shafts 70 are fixedly connected to the inner wall of the oil tank 30.

Preferably, the second housing 20 is rotatable 360 about the second axis 70 relative to the second housing 20, and this arrangement substantially ensures that any relative rotation of the first housing 10 relative to the tank 30 will occur, so that the first housing 10 will always remain open vertically upwardly.

In this embodiment, the second bearing 80 is fixed to the upper end surface of the second housing 20.

Specifically, the second bearing 80 may be fixedly connected to the upper end surface of the second housing 20 through a bearing seat, or may be welded to the upper end surface of the second housing 20 through an outer ring, so that the interference of the second bearing 70 and the second bearing 80 to the first housing 10 is avoided, and the rotation of the first housing 10 relative to the second housing 20 is effectively ensured.

In the present embodiment, the axial direction of the first shaft 50 and the axial direction of the second shaft 70 are perpendicular to each other.

Specifically, when the tank 30 is in the horizontal state, both the axial direction of the first shaft 50 and the axial direction of the second shaft 70 are horizontal directions, and the axial direction of the first shaft 50 is parallel to the width direction of the excavator, which is a direction in which the excavator is least likely to be tilted during actual operation.

Referring to fig. 1 and fig. 2, in the present embodiment, the second housing 20 and the first housing 10 are both hemispherical structures, and the first housing 10 is inserted into the second housing 20.

Specifically, the diameter of the outer spherical surface of the first casing 10 is equal to the diameter of the inner spherical surface of the second casing 20, the two parts complete relative movement through an oil film, and when the oil tank 30 is in a horizontal state, the upper end surface of the first casing 10 and the upper end surface of the second casing 20 are both horizontal surfaces and are arranged in a coplanar manner.

In this embodiment, the upper end surface (circular ring surface) of the first housing 10 is a horizontal surface, and the first oil port 11 is disposed at the lowest point of the first housing 10.

Similarly, when the oil tank 30 is in a horizontal state, the second oil port is also disposed at the lowest point of the second housing 20.

Example two

The present embodiment provides an excavator, which includes a fuel tank 30 and the fluid level control device as described above, and the fluid level control device is installed inside the fuel tank 30.

The technical advantages of the excavator provided by the embodiment are the same as the technical effects of the liquid level adjusting device, and are not repeated here.

It should be noted that, in the case of conflict, the features in the embodiments of the present invention may be combined with each other.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid level adjustment device, characterized by comprising a first housing (10);

first casing (10) rotate to be installed in oil tank (30) inner chamber, and be used for the splendid attire hydraulic oil in oil tank (30), when oil tank (30) incline, first casing (10) with oil tank (30) relative rotation, and can prevent hydraulic oil in first casing (10) flows into oil tank (30), so that the liquid level of hydraulic oil is higher than in first casing (10) the liquid level of hydraulic oil in oil tank (30).

2. The liquid level regulating device according to claim 1, further comprising a second housing (20), wherein the second housing (20) is mounted in an inner cavity of an oil tank (30), and the second housing (20) is provided with a second oil port communicated with the inner cavity of the oil tank (30); the first shell (10) is rotatably mounted on the second shell (20), and a first oil port (11) is formed in the first shell (10);

when the oil tank (30) is horizontal, the second oil port is communicated with the first oil port (11), and when the oil tank (30) is inclined, the second shell (20) and the first shell (10) rotate relatively, and hydraulic oil in the first shell (10) can be prevented from flowing into the oil tank (30).

3. The liquid level regulating device according to claim 2, wherein the second housing (20) is pivoted to the oil tank (30), the first housing (10) is pivoted to the second housing (20), and an axial direction of a pivot shaft between the second housing (20) and the oil tank (30) is arranged at an angle to an axial direction of a pivot shaft between the second housing (20) and the first housing (10).

4. The fluid level regulating device according to claim 3, further comprising a first shaft (50) and a first bearing (60), wherein the first shaft (50) and the first bearing (60) are in interference fit, and one of the first shaft and the first bearing is fixedly connected to the second housing (20) and the other is fixedly connected to the first housing (10).

5. The fluid level regulating device according to claim 4, further comprising a second shaft (70) and a second bearing (80), wherein the second shaft (70) and the second bearing (80) are in interference fit, and one of the second shaft (70) and the second bearing is fixedly connected to the second housing (20) and the other is fixedly connected to the oil tank (30).

6. The fluid level regulating device according to claim 5, wherein the second bearing (80) is fixedly attached to an upper end surface of the second housing (20).

7. The liquid level regulating device according to claim 5, wherein the axial direction of the first shaft (50) and the axial direction of the second shaft (70) are perpendicular to each other.

8. The liquid level regulating device according to any one of claims 2 to 7, wherein the second housing (20) and the first housing (10) are both hemispherical structures, and the first housing (10) is in plug fit with the second housing (20).

9. The liquid level regulating device according to claim 8, wherein the upper end surface of the first housing (10) is a horizontal surface, and the first oil port (11) is disposed at the lowest point of the first housing (10).

10. Excavator, characterized in that it comprises a tank (30) and a level regulation device according to any one of claims 1-9.