Oil tank and engineering vehicle

Abstract

The utility model relates to the technical field of engineering vehicles, and discloses an oil tank and an engineering vehicle. The oil tank comprises an oil tank body, a main oil tank cavity and an auxiliary oil tank cavity which are arranged in an oil tank containing cavity in a separated mode, and the tops of the main oil tank cavity and the auxiliary oil tank cavity are communicated. The main oil suction port is formed in the bottom of the main oil tank cavity, and the auxiliary oil suction port is formed in the bottom of the auxiliary oil tank cavity; the oil suction reversing valve comprises an oil outlet in one side, a first switching oil port connected with the main oil suction port and a second switching oil port connected with the auxiliary oil suction port, wherein the first switching oil port and the second switching oil port are arranged on the other side of the oil suction reversing valve. The engineering vehicle comprises the oil tank. According to the oil tank and the engineering vehicle, when the remaining oil amount of the oil tank is small and the oil tank is in an inclined state, oil is sequentially supplied to an engine through the main oil suction opening and the auxiliary oil suction opening located in the bottoms of the main oil tank cavity and the auxiliary oil tank cavity under the control of the oil suction reversing valve, and therefore the situation that the oil tank sucks air is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering vehicles, and specifically, relates to a fuel tank and an engineering vehicle. Background Art

[0002] The fuel tank is an important component for storing fuel for the engine. In engineering vehicles, the fuel tank suction port is generally located in the middle of the bottom of the fuel tank and a certain distance above the bottom of the fuel tank. Figure 1 As shown in the figure, when the engineering vehicle is in a horizontal position, the oil suction port can suck oil normally; but when the oil volume is small and the engineering vehicle is in an uphill or downhill state, that is, the fuel tank is tilted, as shown in the figure, the oil suction port can suck oil normally; Figure 2 As shown, the fuel suction port may be higher than the fuel level, resulting in empty fuel. That is, the engine cannot absorb fuel because the fuel level in the fuel tank is too low, causing the engine to stall. Summary of the invention

[0003] The purpose of the present application is to provide a fuel tank and an engineering vehicle to avoid the occurrence of the fuel tank being emptied as much as possible.

[0004] In order to achieve the above-mentioned object, the present application provides a fuel tank on one hand, the fuel tank comprising:

[0005] The fuel tank body comprises a main fuel tank chamber and a subsidiary fuel tank chamber which are separated and connected at the top in the fuel tank chamber, and the volume of the main fuel tank chamber is greater than that of the subsidiary fuel tank chamber;

[0006] A main oil suction port and an auxiliary oil suction port, the main oil suction port is arranged at the bottom of the main oil tank cavity, and the auxiliary oil suction port is arranged at the bottom of the auxiliary oil tank cavity;

[0007] The oil suction reversing valve comprises an oil outlet on one side and a first switching oil port connected to the main oil suction port and a second switching oil port connected to the auxiliary oil suction port on the other side.

[0008] In some embodiments, the fuel tank comprises:

[0009] A partition plate is located in the fuel tank cavity and extends upward from the bottom plate of the fuel tank body to separate a main fuel tank cavity on one side and an auxiliary fuel tank cavity on the other side;

[0010] Wherein, the top end of the partition plate is spaced apart from the top cover plate of the oil tank body.

[0011] In some embodiments, the volume ratio of the main tank cavity to the auxiliary tank cavity is greater than 5:1.

[0012] In some embodiments, the fuel tank further comprises:

[0013] The fuel filling port is arranged on the top cover plate just above the auxiliary fuel tank cavity.

[0014] In some embodiments, the oil suction reversing valve is an electromagnetic reversing valve and includes a normally open valve position in which the electromagnet is de-energized and a reversing valve position in which the electromagnet is energized; wherein, in the normally open valve position, the oil outlet is connected to the first switching oil port and is cut off from the second switching oil port, and in the reversing valve position, the oil outlet is connected to the second switching oil port and is cut off from the first switching oil port.

[0015] In some embodiments, the oil tank includes: a main liquid level sensor for detecting the oil level in the main oil tank cavity;

[0016] The controller is configured as:

[0017] In response to the low liquid level signal of the main liquid level sensor, the oil suction reversing valve is controlled to switch to the reversing valve position, and in response to the low liquid level signal of the main liquid level sensor, a main oil tank cavity liquid level alarm signal is issued. In some embodiments, the oil tank further includes:

[0018] A secondary liquid level sensor, disposed in the secondary tank cavity;

[0019] Wherein, the controller is further configured as:

[0020] In response to the low liquid level signal from the auxiliary liquid level sensor, a fuel level alarm signal is issued.

[0021] In some embodiments, the controller is further configured to:

[0022] In response to the low liquid level signal from the auxiliary liquid level sensor, a delayed shutdown signal is issued.

[0023] In some embodiments, the controller is further configured to:

[0024] After the set delay period of the delayed shutdown signal is received for the first time, the engine of the engineering vehicle is controlled to be shut down.

[0025] On the other hand, the present application protects an engineering vehicle, which includes the above-mentioned fuel tank.

[0026] In the technical solution of the present application, the fuel tank body includes a main fuel tank cavity of a larger volume and a sub-fuel tank cavity of a smaller volume, and the main fuel tank cavity and the sub-fuel tank cavity are connected at the top. Therefore, after the fuel tank is filled with fuel, the main oil suction port and the sub-fuel suction port located at the bottom of the main fuel tank cavity and the sub-fuel tank cavity respectively can supply fuel to the engine in sequence under the control of the oil suction reversing valve, that is, the main fuel tank cavity first supplies fuel to the engine through the first switching oil port connected to the main fuel suction port, and then the sub-fuel tank cavity supplies fuel to the engine through the second switching oil port connected to the sub-fuel suction port. In other words, when the fuel tank is in a state of low fuel volume, that is, the fuel in the main fuel tank cavity is consumed to only a small amount of residual fuel and is in a tilted state, the main fuel suction port may be sucked empty, and the sub-fuel tank cavity can supply fuel to the engine through the second switching oil port connected to the sub-fuel suction port. Therefore, the present application can achieve the goal of avoiding the fuel tank from being sucked empty when the remaining fuel volume in the fuel tank is small and the fuel tank is in a tilted state.

[0027] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0029] Figure 1 It is a structural schematic diagram of an oil tank in the prior art in a low oil level state;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure when the fuel tank is in a tilted state;

[0031] Figure 3 It is a structural schematic diagram of a fuel tank at a high fuel level according to a specific embodiment of the present application;

[0032] Figure 4 for Figure 3 A schematic diagram of the structure in which the fuel tank is in a state of low fuel level;

[0033] Figure 5 for Figure 4 Schematic diagram of the structure when the fuel tank is in a tilted state.

[0034] Description of Reference Numerals

[0035] L Liquid level sensor 121 Auxiliary oil suction port

[0036] S Suction port 130 Partition plate

[0037] 100 Fuel tank body 140 Fuel filling port

[0038] 110 Main oil tank cavity 200 Main liquid level sensor

[0039] 111 Main oil suction port 300 Auxiliary liquid level sensor

[0040] 120 Auxiliary oil tank cavity 400 Oil suction reversing valve DETAILED DESCRIPTION

[0041] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0042] The fuel tank and the engineering vehicle according to the present application are described below with reference to the accompanying drawings.

[0043] The present application discloses a novel fuel tank, such as Figures 3 to 5 As shown, the fuel tank in a specific embodiment includes:

[0044] The fuel tank body 100 includes a main fuel tank chamber 110 and a subsidiary fuel tank chamber 120 which are separated and connected at the top in the fuel tank chamber, and the volume of the main fuel tank chamber 110 is greater than the volume of the subsidiary fuel tank chamber 120;

[0045] A main oil suction port 111 and an auxiliary oil suction port 121, wherein the main oil suction port 111 is disposed at the bottom of the main oil tank chamber 110, and the auxiliary oil suction port 121 is disposed at the bottom of the auxiliary oil tank chamber 120;

[0046] The oil suction reversing valve 400 includes an oil outlet on one side and a first switching oil port connected to the main oil suction port 111 and a second switching oil port connected to the auxiliary oil suction port 121 on the other side.

[0047] Specifically, see Figure 3 The oil tank cavity can be divided into a main oil tank cavity 110 with a larger volume and a sub-oil tank cavity 120 with a smaller volume connected to each other at the top, and can supply oil to the engine through the main oil suction port 111 and the sub-oil suction port 121 respectively located at the bottom of the main oil tank cavity 110 and the sub-oil tank cavity 120 through the oil outlet under the control of the oil suction reversing valve 400, that is, the main oil tank cavity 110 first supplies oil to the engine through the first switching oil port connected to the main oil suction port 111, and after the fuel in the main oil tank cavity 110 is consumed to only a small amount of residual fuel, the sub-oil tank cavity 120 supplies oil to the engine through the second switching oil port connected to the sub-oil suction port 121. In the prior art, as Figure 1In the method of supplying fuel to the engine through the fuel tank of a single fuel tank cavity shown in the figure, when the amount of fuel in the fuel tank is small and the engineering vehicle is in an uphill or downhill state, or other situations that may cause the fuel tank to tilt and cause the fuel suction port S to be higher than the fuel liquid level, the engine will be sucked empty, such as Figure 2 As shown. Compared with the prior art, the oil tank of the present application can be supplied with oil from the main oil tank chamber 110 and the auxiliary oil tank chamber 120 in turn through the oil suction reversing valve 400. When the oil tank is in a state of low oil volume, that is, the fuel in the main oil tank chamber 110 is consumed to only a small amount of residual fuel and is in a tilted state, the main oil suction port 111 may be emptied. At this time, the auxiliary oil tank chamber 120 with a higher fuel level can supply oil to the engine through the second switching oil port connected to the auxiliary oil suction port 121. Therefore, the present application can prevent the engine from being emptied when the remaining oil volume in the oil tank is small and the oil tank is in a tilted state, and improve the reliability of the engine.

[0048] In this embodiment, if Figure 3 As shown, the fuel tank includes:

[0049] A partition plate 130 is located in the oil tank cavity and extends upward from the bottom plate of the oil tank body 100 to separate the main oil tank cavity 110 on one side and the auxiliary oil tank cavity 120 on the other side;

[0050] The top end of the partition plate 130 is spaced apart from the top cover plate of the oil tank body 100 .

[0051] Specifically, see Figure 3 The oil tank body 100 is a box body including a partition plate 130, and the partition plate 130 divides the inner cavity of the oil tank into a main oil tank cavity 110 and a sub-oil tank cavity 120, and because there is a certain distance between the top of the partition plate 130 and the top cover plate of the oil tank body 100, the tops of the main oil tank cavity 110 and the sub-oil tank cavity 120 are connected. Such a configuration has a simple structure and is easy to process, which is conducive to successively supplying oil to the engine through the main oil suction port 111 and the sub-oil suction port 121 located at the bottom of the main oil tank cavity 110 and the sub-oil tank cavity 120 respectively under the control of the oil suction reversing valve 400.

[0052] Of course, those skilled in the art will appreciate that the formation of the main tank cavity 110 and the auxiliary tank cavity 120 is not limited to that shown in the figure, i.e., formed by being separated by the same tank body 100. The main tank cavity 110 and the auxiliary tank cavity 120 may also both be tank cavities with separate structures, and the main tank cavity 110 and the auxiliary tank cavity 120 are not limited to being adjacently arranged as shown in the figure, but may also be spaced apart.

[0053] In this embodiment, if Figure 3 As shown, the volume ratio of the main tank cavity 110 and the auxiliary tank cavity 120 is greater than 5:1.

[0054] See also Figure 3Such a configuration is conducive to achieving a comprehensive balance between increasing the volume of the auxiliary tank cavity 120 and improving the utilization rate of the remaining fuel. Specifically, the smaller the cross-section of the auxiliary tank cavity 120, that is, when the fuel tank is tilted, the less residual fuel can be accommodated in the auxiliary tank cavity 120, and the higher the utilization rate of the fuel; however, the smaller the cross-section of the auxiliary tank cavity 120, the smaller the volume of the auxiliary tank cavity 120. Setting the volume ratio of the main tank cavity 110 and the auxiliary tank cavity 120 to 5:1 is conducive to achieving an optimal balance between increasing the volume of the auxiliary tank cavity 120 and improving the utilization rate of the remaining fuel.

[0055] In this embodiment, if Figure 3 As shown, the fuel tank also includes:

[0056] The fuel filling port 140 is disposed on the top cover plate directly above the auxiliary fuel tank cavity 120 .

[0057] Specifically, see Figure 3 With such a configuration, after the fuel tank is filled with fuel through the single refueling port 140, the auxiliary fuel tank cavity 120 can be ensured to be in a high oil level state, which is beneficial for ensuring that after the main fuel tank cavity 110 stops supplying fuel to the engine, there is sufficient fuel in the auxiliary fuel tank cavity 120 and fuel supply can continue, thereby improving the reliability of the fuel tank.

[0058] In this embodiment, if Figure 3 As shown, the oil suction reversing valve 400 is an electromagnetic reversing valve and includes a normally open valve position in which the electromagnet is de-energized and a reversing valve position in which the electromagnet is energized; wherein, in the normally open valve position, the oil outlet is connected to the first switching oil port and is cut off from the second switching oil port, and in the reversing valve position, the oil outlet is connected to the second switching oil port and is cut off from the first switching oil port.

[0059] Specifically, with such an arrangement, it is possible to realize that oil is first supplied to the engine only from the main tank chamber 110, while the auxiliary tank chamber 120 does not supply oil, that is, at this time the oil outlet is connected to the first switching oil port and is cut off from the second switching oil port; after the main tank chamber 110 finishes supplying oil to the engine, the auxiliary tank chamber 120 starts supplying oil, that is, at this time the oil outlet is connected to the second switching oil port and is cut off from the first switching oil port.

[0060] Of course, those skilled in the art will appreciate that after the main oil tank chamber 110 stops supplying oil to the engine, the oil outlet may also be connected to the first switching oil port. The oil suction reversing valve 400 is not limited to an electromagnetic reversing valve, and may also be a hydraulic reversing valve.

[0061] In this embodiment, if Figure 3 As shown, the oil tank includes: a main liquid level sensor 200 for detecting the oil level in the main oil tank cavity 110;

[0062] The controller is configured as:

[0063] In response to the low liquid level signal of the main liquid level sensor 200, the oil suction reversing valve 400 is controlled to switch to the reversing valve position, and in response to the low liquid level signal of the main liquid level sensor 200, a main oil tank cavity liquid level alarm signal is issued.

[0064] Specifically, when the main tank cavity 110 is in a low oil level state, the tank may be in a tilted state, so that the main oil suction port 111 is higher than the oil level of the fuel, causing the engine to suck empty. Therefore, after the main liquid level sensor 200 detects that the oil level is too low, it sends a low liquid level signal, and then controls the oil suction reversing valve 400 to switch to the reversing valve position, and the auxiliary tank cavity 120 supplies oil to the engine, see Figure 4 and Figure 5 .

[0065] In order to further improve the availability of the oil tank of the present application, when the controller receives the low liquid level signal from the main liquid level sensor 200, in addition to the above-mentioned switching valve position operation, in this embodiment, the controller is further configured as follows:

[0066] In response to the low liquid level signal from the main liquid level sensor, a main tank cavity liquid level alarm signal is issued.

[0067] Specifically, when the fuel in the main tank cavity 110 is consumed to a low level, the main liquid level sensor 200 sends a low liquid level signal to the controller, and then the controller sends a main tank cavity liquid level alarm signal to remind the operator that the fuel in the main tank cavity 110 has reached a low level and needs to be refilled or prepared to be refilled in time.

[0068] Among them, the main oil tank cavity liquid level alarm signal can be selected as a light signal, a sound signal, a vibration signal, etc.

[0069] In this embodiment, if Figure 5 As shown, the fuel tank also includes:

[0070] Auxiliary liquid level sensor 300, disposed in auxiliary tank cavity 120;

[0071] Wherein, the controller is further configured as:

[0072] In response to the low level signal of the auxiliary liquid level sensor 300, a fuel level alarm signal is issued.

[0073] Specifically, after the fuel in the auxiliary tank cavity 120 is consumed to a low level, the auxiliary liquid level sensor 300 sends a low liquid level signal to the controller, and then the controller sends a fuel level alarm signal to prompt the operator to add fuel in time.

[0074] Among them, the fuel level alarm signal can be selected as a light signal, a sound signal, a vibration signal, etc.

[0075] In this embodiment, the controller is further configured to:

[0076] In response to the low liquid level signal of the auxiliary liquid level sensor 300, a delayed shutdown signal is issued.

[0077] Specifically, when the fuel in the auxiliary tank cavity 120 is consumed to a low level, after the auxiliary liquid level sensor 300 sends a low liquid level signal to the controller, if the operator does not add fuel to the tank in time and the engine continues to work, the probability of the engine sucking air increases greatly. At this time, the controller sends a delayed flameout signal to remind the operator to add fuel in time, and may shut down the engine for protection.

[0078] In this embodiment, the controller is further configured to:

[0079] After the set delay period of the delayed shutdown signal is received for the first time, the engine of the engineering vehicle is controlled to be shut down.

[0080] Specifically, after the set delay period of the delayed shutdown signal is received for the first time, for example three minutes, if the operator does not perform operations such as refueling or shutting down the engine within the delay period, the engine will be automatically shut down for protection to avoid engine damage due to air intake.

[0081] The present application discloses a novel engineering vehicle. The engineering vehicle in a specific implementation manner includes the above-mentioned fuel tank.

[0082] Among them, the engineering vehicle has all the technical effects brought by the above-mentioned fuel tank, which will not be repeated here.

[0083] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0084] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A fuel tank, characterized in that: The fuel tank comprises: The oil tank body (100) comprises a main oil tank chamber (110) and a subsidiary oil tank chamber (120) which are separated and connected at the top in the oil tank chamber, wherein the volume of the main oil tank chamber (110) is greater than the volume of the subsidiary oil tank chamber (120); A main oil suction port (111) and a secondary oil suction port (121), wherein the main oil suction port (111) is arranged at the bottom of the main oil tank cavity (110), and the secondary oil suction port (121) is arranged at the bottom of the secondary oil tank cavity (120); The oil suction reversing valve (400) comprises an oil outlet on one side and a first switching oil port connected to the main oil suction port (111) and a second switching oil port connected to the auxiliary oil suction port (121) on the other side.

2. The fuel tank according to claim 1, characterized in that: The fuel tank comprises: A partition plate (130) is located in the oil tank cavity and extends upward from the bottom plate of the oil tank body (100) to separate the main oil tank cavity (110) on one side and the auxiliary oil tank cavity (120) on the other side; Wherein, the top end of the partition plate (130) is spaced apart from the top cover plate of the oil tank body (100).

3. The fuel tank according to claim 2, characterized in that: The volume ratio of the main oil tank chamber (110) and the auxiliary oil tank chamber (120) is greater than 5:

1.

4. The fuel tank according to claim 2, characterized in that: The fuel tank also includes: A refueling port (140) is provided on the top cover plate directly above the auxiliary oil tank cavity (120).

5. The fuel tank according to any one of claims 1 to 4, characterized in that: The oil suction reversing valve (400) is an electromagnetic reversing valve and includes a normally open valve position in which the electromagnet is de-energized and a reversing valve position in which the electromagnet is energized; wherein, in the normally open valve position, the oil outlet is connected to the first switching oil port and is cut off from the second switching oil port, and in the reversing valve position, the oil outlet is connected to the second switching oil port and is cut off from the first switching oil port.

6. The fuel tank according to claim 5, characterized in that: The oil tank comprises: a main liquid level sensor (200) for detecting the oil level in the main oil tank cavity (110); The controller is configured as: In response to the low liquid level signal of the main liquid level sensor (200), the oil suction reversing valve (400) is controlled to switch to the reversing valve position, and in response to the low liquid level signal of the main liquid level sensor (200), a main oil tank chamber liquid level alarm signal is issued.

7. The fuel tank according to claim 6, characterized in that The fuel tank also includes: A secondary liquid level sensor (300) is disposed in the secondary oil tank cavity (120); Wherein, the controller is further configured to: In response to the low liquid level signal of the auxiliary liquid level sensor (300), a fuel liquid level alarm signal is issued.

8. The fuel tank according to claim 7, characterized in that: The controller is further configured to: In response to the low liquid level signal from the auxiliary liquid level sensor (300), a delayed ignition off signal is issued.

9. The fuel tank according to claim 8, characterized in that The controller is further configured to: After the set delay period of the delayed shutdown signal is received for the first time, the engine of the engineering vehicle is controlled to be shut down.

10. An engineering vehicle, characterized in that: The engineering vehicle comprises a fuel tank according to any one of claims 1 to 9.

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