Semi-trailer hydraulic tank

Abstract

In the semi-trailer hydraulic oil tank provided in the embodiment of the present application, a plastic sieve plate can be provided in the tank body, and the plastic sieve plate is in contact with the oil surface of the hydraulic oil in the tank body. A plurality of light springs are provided between the plastic sieve plate and the bottom surface of the oil tank, and the sum of the gravity of the plastic sieve plate and the total elastic force of the plurality of light springs is less than the buoyancy of the plastic sieve plate. In addition, the portion of the return oil pipe located in the tank body is also connected with a telescopic tube, which passes through the plastic sieve plate and extends into the hydraulic oil. In this way, when the oil level of the hydraulic oil in the tank body rises or falls, the plastic sieve plate can maintain balance under the action of buoyancy, spring elastic force and its own gravity, and always insert the telescopic tube below the oil surface of the hydraulic oil to prevent bubbles from splashing out during the oil return process, thereby reducing the probability of the hydraulic pump being sucked in and producing cavitation.

Description

Technical Field

[0001] The present application relates to the technical field of semi-trailer parts, and more specifically, to a hydraulic oil tank for a semi-trailer. Background Art

[0002] The hydraulic system is one of the important components of a heavy-duty special-structure semi-trailer. Its function is to control various mechanical devices on the semi-trailer to perform lifting, rotation or tilting. The hydraulic system consists of a hydraulic pump, a hydraulic oil tank, hydraulic pipelines and actuators.

[0003] The hydraulic oil tank is a component in the hydraulic system that is responsible for storing hydraulic oil and maintaining its oil level. During the use of the hydraulic oil tank, due to the consumption of hydraulic oil inside the tank, a distance is created between the port of the return pipe on the tank and the hydraulic right side inside the tank, causing bubbles to splash in the hydraulic oil tank when the return pipe returns oil, which can cause the hydraulic pump to suck air and produce cavitation. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a semi-trailer hydraulic oil tank to solve the technical problem in the related art that a distance is generated between the hydraulic right side of the hydraulic oil tank and the port of the return pipe, thereby causing bubbles to splash in the tank body when the return pipe returns oil.

[0005] In order to achieve the above objectives, the present application provides the following technical solutions:

[0006] A semitrailer hydraulic oil tank, comprising:

[0007] A box body, in which hydraulic oil is stored;

[0008] An oil return pipe, the oil return pipe is arranged on the box body, and the oil return pipe is communicated with the inner cavity of the box body;

[0009] A plastic sieve plate, wherein the plastic sieve plate has a plurality of through holes, the outer diameter and shape of the plastic sieve plate are adapted to the outer diameter and shape of the inner cavity of the box body, the plastic sieve plate is transversely arranged in the box body, and the plastic sieve plate is in contact with the oil surface of the hydraulic oil;

[0010] A plurality of light springs, wherein the plurality of light springs are arranged between the plastic sieve plate and the bottom surface of the box body, the plurality of light springs are located in the hydraulic oil in the box body, and the sum of the total elastic force of the plurality of light springs and the gravity of the plastic sieve plate is less than the buoyancy of the plastic sieve plate;

[0011] A telescopic tube is connected to and communicated with the oil return pipe, the telescopic tube is located in the box, and the telescopic tube passes through the plastic sieve plate and extends into the hydraulic oil.

[0012] In some possible implementations, the length of the portion of the telescopic tube below the plastic sieve plate is equal to the length of the light spring in a non-stressed mode.

[0013] In some possible implementations, the telescopic tube is a pleated foldable telescopic tube.

[0014] In some possible implementations, the telescopic tube includes a first inner tube and a second outer tube;

[0015] The first inner tube is connected to the oil return tube, and the first inner tube is slidably disposed in the second outer tube;

[0016] The second outer tube passes through the plastic sieve plate and is located in the hydraulic oil.

[0017] In some possible implementations, a first limiting ring is provided at the end of the first inner tube located inside the second outer tube;

[0018] A second limiting ring is provided at the end where the second outer tube is connected to the first inner tube, and the first limiting ring abuts against the second limiting ring to prevent the first inner tube from sliding out of the second outer tube.

[0019] In some possible implementations, the bottom surface of the box body is provided with a downwardly recessed concave surface, and the concave surface is provided with an oil storage port for use in conjunction with the port of the telescopic tube.

[0020] The semi-trailer hydraulic oil tank provided in the embodiment of the present application has at least the following beneficial effects:

[0021] In the semi-trailer hydraulic oil tank provided in the embodiment of the present application, a plastic sieve plate can be provided in the tank body, and the plastic sieve plate is in contact with the oil surface of the hydraulic oil in the tank body. A plurality of light springs are provided between the plastic sieve plate and the bottom surface of the oil tank, and the sum of the gravity of the plastic sieve plate and the total elastic force of the plurality of light springs is less than the buoyancy of the plastic sieve plate. In addition, the portion of the return oil pipe located in the tank body is also connected with a telescopic tube, which passes through the plastic sieve plate and extends into the hydraulic oil. In this way, when the oil level of the hydraulic oil in the tank body rises or falls, the plastic sieve plate can maintain balance under the action of buoyancy, spring elastic force and its own gravity, and always insert the telescopic tube below the oil surface of the hydraulic oil to prevent bubbles from splashing out during the oil return process, thereby reducing the probability of the hydraulic pump being sucked in and producing cavitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a semi-trailer hydraulic oil tank provided in an embodiment of the present application;

[0024] Figure 2 A side sectional view of a semi-trailer hydraulic oil tank provided in an embodiment of the present application;

[0025] Figure 3 A structural cross-sectional view of a telescopic pipe of a semi-trailer hydraulic oil tank provided in another embodiment of the present application;

[0026] Figure 4 A schematic diagram of the coordination between the oil tank and the telescopic tube of a semi-trailer hydraulic oil tank provided in another embodiment of the present application.

[0027] In the figure:

[0028] 100, casing; 200, oil return pipe; 300, plastic sieve plate; 400, light spring; 500, telescopic tube; 600, first inner tube; 610, first limiting ring; 700, second outer tube; 710, second limiting ring; 800, concave surface; 900, oil storage port. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-Figure 2 As shown, the semi-trailer hydraulic oil tank provided in the embodiment of the present application includes a tank body 100, an oil return pipe 200, a plastic sieve plate 300, a plurality of light springs 400 and a telescopic tube 500, wherein the tank body 100 stores hydraulic oil for circulation, the oil return pipe 200 is arranged on the tank body 100 and is connected with the inner cavity of the tank body 100, and the oil return pipe 200 can transport the hydraulic oil in the tank body 100 to the hydraulic system for circulation.

[0031] The plastic sieve plate 300 is a structure with multiple through holes, and the outer diameter and outer diameter of the plastic sieve plate 300 are adapted to the outer shape and outer diameter of the inner cavity of the box 100, so the plastic sieve plate 300 can be set in the inner cavity of the box 100. The plastic sieve plate 300 is transversely arranged in the inner cavity of the box 100 and contacts the oil surface of the hydraulic oil of the box 100.

[0032] In this embodiment, a plurality of light springs 400 are provided on the bottom surface of the plastic sieve plate 300 and the bottom surface of the box body 100. Specifically, light springs 400 are provided at the four corners of the bottom surface of the plastic sieve plate 300. The light springs 400 are located in the hydraulic oil, and the sum of the total elastic force of the plurality of light springs 400 and the gravity of the plastic sieve plate 300 is less than the buoyancy of the plastic sieve plate 300, so that the plastic sieve plate 300 can always float above the oil surface of the hydraulic oil.

[0033] The telescopic tube 500 is disposed on the plastic sieve plate 300, and the telescopic tube 500 penetrates the plastic sieve plate 300. One end of the telescopic tube 500 is connected to the oil return pipe 200, and the other end of the telescopic tube 500 extends below the oil level of the hydraulic oil. Since the sum of the total elastic force of the plurality of light springs 400 and the gravity of the plastic sieve plate 300 is less than the buoyancy of the plastic sieve plate 300, the plastic sieve plate 300 can always float above the oil level of the hydraulic oil, so that the telescopic tube 500 can always be located below the oil level of the hydraulic oil.

[0034] In the semi-trailer hydraulic oil tank provided in the embodiment of the present application, a plastic sieve plate 300 can be arranged in the box body 100, and the plastic sieve plate 300 is in contact with the oil surface of the hydraulic oil in the box body 100. A plurality of light springs 400 are arranged between the plastic sieve plate 300 and the bottom surface of the oil tank, and the sum of the gravity of the plastic sieve plate 300 and the total elastic force of the plurality of light springs 400 is less than the buoyancy of the plastic sieve plate 300. In addition, the part of the return oil pipe 200 located in the box body 100 is also connected to a telescopic tube 500, which penetrates the plastic sieve plate 300 and extends into the hydraulic oil. In this way, when the oil level of the hydraulic oil in the box body 100 rises or falls, the plastic sieve plate 300 can maintain balance under the action of buoyancy, spring elastic force and its own gravity, and always insert the telescopic tube 500 below the oil surface of the hydraulic oil to prevent bubbles from splashing out during the oil return process, thereby reducing the probability of the hydraulic pump being sucked and generating cavitation.

[0035] In some embodiments, the length of the telescopic tube 500 below the plastic sieve plate 300 is equal to the length of the light spring 400 in the non-stress mode. This allows the telescopic tube 500 to smoothly return oil when the height of the hydraulic oil in the box 100 is less than the length of the light spring 400 in the non-stress mode.

[0036] In some embodiments, the telescopic tube 500 may be a folded telescopic tube 500 of a pleated type, or may be a telescopic structure composed of two sections of tubes. Figure 3 As shown, the telescopic tube 500 includes a first inner tube 600 and a second outer tube 700. The first inner tube 600 is connected to the oil return pipe 200. The first inner tube 600 is slidably disposed in the second outer tube 700. The second outer tube 700 passes through the plastic sieve plate 300 and is located below the oil level of the hydraulic oil.

[0037] In order to prevent the first inner tube 600 from separating from the second outer tube 700, a first limiting ring 610 is provided at the end of the first inner tube 600 located inside the second outer tube 700, and a second limiting ring 710 is provided at the end opening where the second outer tube 700 is connected to the first inner tube 600. The first limiting ring 610 and the second limiting ring 710 can prevent the first inner tube 600 from slipping out of the second outer tube 700.

[0038] In some embodiments, Figure 4 As shown, the bottom surface of the box body 100 is provided with a concave surface 800 that is sunken downward, and the concave surface 800 is provided with an oil storage port 900 that is compatible with the port of the telescopic tube 500. When the hydraulic oil in the box body 100 is small enough, the hydraulic oil will gather in the oil storage port 900 of the concave surface 800, thereby facilitating the telescopic tube 500 to extract the hydraulic oil.

[0039] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0040] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0041] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0042] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0043] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0044] The term "substrate" as used herein refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned, or may remain unpatterned. In addition, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.).

[0045] The term "layer" used in the text may refer to a material portion including an area with a certain thickness. A layer may extend over the entire underlying structure or overlying structure, or may have a range smaller than the range of the underlying or overlying structure. In addition, a layer may be an area of ​​a homogeneous or inhomogeneous continuous structure, the thickness of which is less than the thickness of the continuous structure. For example, a layer may be located between the top surface and the bottom surface of the continuous structure or between any paired lateral planes at the top surface and the bottom surface. A layer may extend laterally, vertically and / or along a tapered surface. A substrate may be a layer, may include one or more layers therein, and / or may have one or more layers located thereon, above it and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductors and a contact layer (forming contacts, interconnects and / or vias therein) and one or more dielectric layers.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A semi-trailer hydraulic oil tank, characterized in that: include: A box (100), wherein hydraulic oil is stored in the box (100); An oil return pipe (200), wherein the oil return pipe (200) is arranged on the box body (100), and the oil return pipe (200) is communicated with the inner cavity of the box body (100); A plastic sieve plate (300), the plastic sieve plate (300) having a plurality of through holes, the outer diameter and shape of the plastic sieve plate (300) being compatible with the outer diameter and shape of the inner cavity of the box body (100), the plastic sieve plate (300) being transversely arranged in the box body (100), and the plastic sieve plate (300) being in contact with the oil surface of the hydraulic oil; A plurality of light springs (400), wherein the plurality of light springs (400) are arranged between the plastic sieve plate (300) and the bottom surface of the box (100), the plurality of light springs (400) are located in the hydraulic oil in the box (100), and the sum of the total elastic force of the plurality of light springs (400) and the gravity of the plastic sieve plate (300) is less than the buoyancy of the plastic sieve plate (300); A telescopic tube (500), the telescopic tube (500) is connected to and communicates with the oil return pipe (200), the telescopic tube (500) is located in the box (100), and the telescopic tube (500) passes through the plastic sieve plate (300) and extends into the hydraulic oil.

2. The semi-trailer hydraulic oil tank according to claim 1, characterized in that: The length of the portion of the telescopic tube (500) below the plastic sieve plate (300) is equal to the length of the light spring (400) in a non-stressed mode.

3. The semi-trailer hydraulic oil tank according to claim 1, characterized in that: The telescopic tube (500) is a pleated foldable telescopic tube (500).

4. The semitrailer hydraulic oil tank according to claim 1, characterized in that: The telescopic tube (500) comprises a first inner tube (600) and a second outer tube (700); The first inner tube (600) is connected to the oil return tube (200), and the first inner tube (600) is slidably disposed in the second outer tube (700); The second outer tube (700) passes through the plastic sieve plate (300) and is located in the hydraulic oil.

5. The semitrailer hydraulic oil tank according to claim 4, characterized in that: A first limiting ring (610) is provided at the end of the first inner tube (600) located inside the second outer tube (700); A second limiting ring (710) is provided at the end where the second outer tube (700) is connected to the first inner tube (600), and the first limiting ring (610) abuts against the second limiting ring (710) to prevent the first inner tube (600) from sliding out of the second outer tube (700).

6. The semitrailer hydraulic oil tank according to claim 1, characterized in that: The bottom surface of the box body (100) is provided with a concave surface (800) that is recessed downwards, and the concave surface (800) is provided with an oil storage port (900) that cooperates with the port of the telescopic tube (500).

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