CN218977358U - Oil tank and harvester - Google Patents

Abstract

The utility model discloses an oil tank and a harvester, which comprises a shell, a limiting assembly and a sealing cover assembly, wherein the shell is of an integrated structure, the shell is provided with a containing cavity suitable for containing oil, the shell is also provided with an oiling part and an oil return part, the oiling part is communicated with the containing cavity, the oiling part is suitable for being communicated with an external oil source, and the oil return part is suitable for being communicated with an engine of the harvester; the limiting assembly is arranged on the shell and comprises a limiting part formed on the outer wall surface of the shell, and the limiting part is suitable for being matched with the belt part of the harvester in a conformal manner; the sealing cover assembly is detachably arranged on the oiling part and is provided with a sealing state which is covered on the oiling part to seal the oiling part and the outside, and a separating state which is separated from the oiling part and is communicated with the containing cavity and the external oil source. The oil tank of this structure, the casing sets up to integrated into one piece structure, has avoided the oil tank to use a plurality of parts to weld when combining in the manufacturing process, and the mistake leads to the unable finished product of oil tank or condemned condition, has improved the production efficiency of oil tank.

Description

Oil tank and harvester

Technical Field

The utility model relates to the technical field of harvester oil tanks, in particular to an oil tank and a harvester.

Background

Along with the continuous development of social economy, more and more mechanical equipment enters the daily life of people, wherein the combine harvester is very popular with people, and not only can the combine harvester quickly help farmers to harvest crops such as wheat or rice, but also can liberate the manual labor of the farmers, and greatly lightens the working intensity of the farmers. The working of the combine harvester requires the oil tank to fill oil into the combine harvester and burn the oil to obtain driving force, so the oil tank plays a role in providing driving force in the combine harvester.

In the prior art, the oil tank is generally formed by welding a plurality of parts, wherein each part needs to be manufactured through machining, and the strength of the oil tank is improved through profiling of some parts, and after all the parts are ready, the parts are combined into the oil tank through welding. Many processes are needed before the welding type oil tank is assembled, firstly, an atmospheric pressure-resistant leakage-proof experiment is needed before the assembly, the pressure-resistant experiment needs to be used as a tool to prevent surface protrusion, the pressure-resistant experiment ensures that the protruding surface is not more than 5mm, secondly, the oil tank is sufficiently cleaned before the assembly, sundries such as welding slag, rust and the like are not generated in the oil tank, the cleanliness of the oil tank is not higher than 11 levels, then, the assembled oil tank is sealed by using transparent adhesive tapes in time, and finally, the inside of the oil tank is subjected to phosphating treatment.

However, because the existing oil tank needs to be manufactured into a plurality of parts in advance in the manufacturing process, each part needs to be manufactured through machining, each part needs to be welded and combined after being manufactured, and finally an oil tank can be manufactured, no error at all can occur in the welding process, otherwise, the oil tank cannot be manufactured into a finished product, even the oil tank is scrapped, and the production efficiency of the oil tank is greatly affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the prior oil tank is manufactured by welding and combining a plurality of parts, and in the welding process, one error cannot occur, otherwise, the oil tank cannot be finished, even the oil tank is scrapped, and the production efficiency of the oil tank is greatly influenced.

To this end, the utility model provides a tank comprising:

the shell is of an integrated structure and is provided with a containing cavity suitable for containing oil, an oiling part and an oil return part, wherein the oiling part and the oil return part are communicated with the containing cavity, the oiling part is suitable for being communicated with an external oil source, and the oil return part is suitable for being communicated with a harvester engine;

the limiting assembly is arranged on the shell and comprises a limiting part formed on the outer wall surface of the shell, and the limiting part is suitable for being matched with the belt part of the harvester in a conformal manner;

the sealing cover assembly is detachably arranged on the oiling part and is provided with a sealing state for sealing the oiling part and the outside, and a separating state for separating the oiling part and communicating the accommodating cavity with an external oil source.

Optionally, the above oil tank, the limit portion is at least two limit grooves recessed from outside to inside, and at least two limit grooves are opposite to the oil injection portion and are arranged on two sides of the shell, and the limit groove is annularly arranged on the outer peripheral surface of the shell.

Optionally, in the above oil tank, the oil injection part is an oil injection pipe with two ends communicated, and one end of the oil injection pipe is communicated with the accommodating cavity;

the cover assembly comprises a cover body, and the cover body is detachably connected with one side, far away from the accommodating cavity, of the oil filling pipe.

Optionally, in the above oil tank, the oil filler pipe and the cover body are connected through a screw structure.

Optionally, the above-mentioned fuel tank, the capping assembly further includes:

the sealing piece is arranged between the thread structure of the oil filling pipe and the thread structure of the cover body;

the filter screen is arranged in the oil injection pipe and is used for filtering impurities in oil injected into the accommodating cavity from an external oil source.

Optionally, in the above oil tank, a reinforcing rib is disposed on an outer surface of the housing, and a cross section of the reinforcing rib is one or a combination of more of triangle, semicircle and rectangle.

Optionally, the oil tank is further provided with an oil level detecting portion on the housing, and the oil level detecting portion is adapted to allow the oil level gauge to extend into the accommodating chamber.

Optionally, in the above oil tank, an air permeable part is further disposed at the upper end of the housing, and the air permeable part is adapted to connect the air permeable valve and the accommodating cavity, so that the accommodating cavity is communicated with the outside;

the caliber size of the ventilation part is smaller than that of the oil level detection part and the oil return part.

Optionally, the above oil tank, be provided with the oil level indicating part on the casing lateral wall, the oil level indicating part is configured to instruct the oil level of holding the intracavity, the both ends of oil level indicating part respectively with hold the chamber intercommunication, just the one end of oil level indicating part with be close to oiling portion one side sets up, the other end of oil level indicating part with keep away from oiling portion one side sets up.

Optionally, in the above oil tank, an oil drain part is arranged at the bottom of the shell, and the oil drain part is suitable for plugging the accommodating cavity and the outside through an oil drain cover;

the oil drain part is circular, rectangular, triangular, trapezoidal or parallelogram in shape.

A harvester comprises the oil tank.

The technical scheme provided by the utility model has the following advantages:

1. the oil tank, the shell, the limiting assembly and the sealing cover assembly are integrally formed, the shell is provided with a containing cavity suitable for containing oil, the shell is further provided with an oiling part and an oil return part, the oiling part is communicated with an external oil source, and the oil return part is communicated with an engine of the harvester; the limiting assembly is arranged on the shell and comprises a limiting part formed on the outer wall surface of the shell, and the limiting part is suitable for being matched with the belt part of the harvester in a conformal manner; the sealing cover assembly is detachably arranged on the oiling part and is provided with a sealing state which is covered on the oiling part to seal the oiling part and the outside, and a separating state which is separated from the oiling part and is communicated with the containing cavity and the external oil source.

The oil tank of this structure, through setting up the casing as integrated into one piece structure, set up spacing subassembly and the detachable closing cap subassembly of setting on the oiling portion on the casing, the casing sets up as integrated into one piece structure, avoided the oil tank to use a plurality of parts to weld when combining in the manufacturing process, the condition that the mistake leads to the unable finished product of oil tank or scrapped appears, the production efficiency of oil tank has been improved, the casing has the chamber that holds that is suitable for holding fluid, still have oiling portion and oil return portion on the casing, oiling portion and external intercommunication, the fluid is poured into through oiling portion and is held the intracavity, oil return portion and harvester engine intercommunication, the fluid that holds the intracavity is poured into through oil return portion into harvester engine, spacing portion shaping is on the outer wall surface of casing, be suitable for with the suitable band portion fit of harvester, be favorable to restricting the removal of oil tank on the harvester, closing cap subassembly detachably sets up on oiling portion, closing cap subassembly has the shutoff state that the lid was established with oiling portion and external dust is favorable to preventing that external dust from entering into holding the intracavity and polluting fluid, still have with oiling portion separation, and hold chamber and the separation state that the external source of filling into to be favorable to holding the chamber.

2. The utility model provides an oil tank, wherein a limiting part is two limiting grooves concavely arranged from outside to inside, the two limiting grooves are arranged on two sides of a shell relative to an oiling part, the limiting grooves are annularly arranged on the outer peripheral surface of the shell, the oiling part is an oiling pipe with two ends communicated, one end of the oiling pipe is communicated with a containing cavity, a cover assembly comprises a cover body, the cover body is detachably connected with one side of the oiling pipe far away from the containing cavity, the oiling pipe is connected with the cover body through a thread structure, the cover assembly also comprises a sealing element and a filter screen, and the sealing element is arranged between the thread structure of the oiling pipe and the thread structure of the cover body; the filter screen is arranged in the oil injection pipe and is used for filtering impurities in oil injected into the accommodating cavity from an external oil source.

The oil tank of this structure is established at the band portion fit of outside-in sunken two limit grooves that set up and harvester of casing both sides through relative oiling part, be favorable to fixed oil tank on the harvester, and restrict the removal of oil tank on the harvester, the one end of annotating oil pipe is linked together with holding the chamber, the other end and external intercommunication, be favorable to external fluid to pour into holding the intracavity, lid detachably is kept away from holding one side of chamber with annotating oil pipe and is passed through threaded structure connection, be favorable to the lid to protect to hold the intracavity fluid and not pollute or lift the lid so that fluid pours into holding the intracavity, the sealing member sets up between the threaded structure of annotating oil pipe and the threaded structure of lid, be favorable to lid and the inseparabler of annotating oil pipe connection, prevent to hold the intracavity fluid and spill from annotating oil pipe, the filter screen setting is in annotating oil pipe, be favorable to filtering the impurity of pouring into the external fluid that holds the intracavity.

3. The utility model provides an oil tank, wherein a reinforcing rib is arranged on the outer surface of a shell, the cross section of the reinforcing rib is in the shape of one or more of triangle, semicircle and rectangle, an oil level detection part is arranged on the shell, the oil level detection part is suitable for an oil level gauge to extend into a containing cavity, an air permeable part is arranged at the upper end of the shell, the air permeable part is suitable for connecting an air permeable valve and the containing cavity so as to enable the containing cavity to be communicated with the outside, the caliber size of the air permeable part is smaller than the caliber sizes of the oil level detection part and an oil return part, an oil level indication part is arranged on the side wall of the shell, the oil level indication part is configured to indicate the oil level in the containing cavity, two ends of the oil level indication part are respectively communicated with the containing cavity, one end of the oil level indication part is arranged close to one side of the oil injection part, the other end of the oil level indication part is arranged far away from the oil injection part, an oil drain part is arranged at the bottom of the shell, the oil drain part is suitable for plugging the containing cavity and the outside through an oil drain cover, and the shape of the oil drain part is circular, rectangle, triangle, trapezoid or parallelogram.

The oil tank of this structure, through setting up strengthening rib on the casing surface, setting up the oil level detection part on the casing, setting up the ventilative portion of casing upper end, setting up the oil level indicator on the casing lateral wall and setting up the oil drain portion in the casing bottom, set up the strengthening rib on the surface of casing, be favorable to strengthening the intensity of casing, prevent that the casing from receiving the striking of holding intracavity fluid and breaking, set up the oil level detection part on the casing, the oil level detection part is suitable for supplying the oil level to stretch into hold the intracavity, be favorable to the oil level to detect the memory space of holding intracavity fluid, set up ventilative portion on the casing, ventilative portion be suitable for even penetrating the pneumatic valve with hold the chamber, so that hold the chamber and external intercommunication are favorable to guaranteeing to hold the atmospheric pressure of intracavity and external atmospheric pressure and keep unanimous, prevent that the casing from producing deformation damage because of holding the atmospheric pressure of intracavity is inconsistent with external atmospheric pressure, set up the oil level indicator on the lateral wall of casing is configured to instruct the oil level that holds the intracavity, be favorable to observing the oil level that holds intracavity fluid to refuel to the oil tank, be favorable to filling oil to the oil tank, bottom at the casing is provided with the oil drain portion, is suitable for holding the new oil drain through the shutoff chamber and is favorable to holding the external pollution of the chamber.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a fuel tank according to an embodiment of the present utility model;

FIG. 2 is a front view of a fuel tank provided in an embodiment of the present utility model;

FIG. 3 is a bottom view of a fuel tank provided in an embodiment of the present utility model;

FIG. 4 is an enlarged view of FIG. 2 at circle A;

reference numerals illustrate:

1-a housing; 11-an oil filler pipe; 12-an oil return part; 13-reinforcing ribs; 14-an oil level detection portion; 15-ventilation part; 16-an oil level indicator; 17-an oil drain;

21-a limit groove;

31-a cover; 32-a seal; 33-a filter screen.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides an oil tank, as shown in fig. 1 to 4, which includes a housing 1, a limiting assembly, and a cover assembly. Wherein, casing 1 sets up to integrated into one piece structure, avoided the oil tank to use a plurality of parts to weld when combining in the manufacturing process, the mistake to lead to the unable finished product of oil tank or condemned condition, improved the production efficiency of oil tank, casing 1 has the chamber of holding that is suitable for holding fluid, still have oiling portion and return oil portion 12 on the casing 1, oiling portion and external intercommunication, the intracavity is held through oiling portion injection into to holding, return oil portion 12 and harvester engine intercommunication, the fluid of holding intracavity is poured into the harvester engine through return oil portion 12, spacing portion shaping is on the outer wall of casing 1, be suitable for the band portion adaptation with the harvester, be favorable to fixed oil tank on the harvester, and restrict the oil tank and remove on the harvester, closing cap subassembly detachably sets up on oiling portion, closing cap subassembly has the lid to establish in oiling portion with shutoff portion and external shutoff state, be favorable to preventing that external dust from entering into holding the intracavity and polluting fluid, closing cap subassembly still has the separation with oiling portion, and holding chamber and external oily source intercommunication's separation state.

The oil tank provided in this embodiment, as shown in fig. 1, the limiting portion is two limiting grooves 21 that are disposed from outside to inside, and the two limiting grooves 21 are disposed on two sides of the housing 1 with respect to the oiling portion, the two limiting grooves 21 are all disposed on the outer peripheral surface of the housing 1 in a surrounding manner, and the two limiting grooves 21 are in form-fit with the belt portion on the harvester, so as to fix the oil tank on the harvester and limit the oil tank to move on the harvester.

The oil tank that this embodiment provided, as shown in fig. 1, the oiling portion is the oiling pipe 11 that both ends are linked together, the one end of oiling pipe 11 is linked together with hold the intracavity, the other end and the external intercommunication of oiling pipe 11 are favorable to external fluid to pour into from oiling pipe 11 and hold the intracavity, the oil time in the oil tank is abundant has been guaranteed, the closing cap subassembly includes lid 31, lid 31 detachably is kept away from one side of holding the chamber with oiling pipe 11 and is connected, when lid 31 is kept away from one side of holding the chamber with oiling pipe 11 and is connected, external fluid just can not pour into and hold the intracavity, and lid 31 can keep apart impurity such as dust in the outside air and enter into and hold the intracavity, thereby pollute the fluid that holds the intracavity, lid 31 also can prevent to hold intracavity fluid from pouring out from oiling pipe 11, when lid 31 is kept away from one side of holding the chamber from oiling pipe 11, external fluid can pour into the holding the intracavity through oiling pipe 11 when unloading.

The oil tank that this embodiment provided, as shown in fig. 4, filler pipe 11 and lid 31 pass through threaded structure and connect, be provided with the screw thread on the inner wall of one side that filler pipe 11 kept away from the holding chamber, lid 31 and filler pipe 11 are connected's part also is provided with the screw thread, consequently filler pipe 11 and lid 31 pass through threaded structure and connect, be favorable to lid 31 and filler pipe 11 be connected or dismantle more simply convenient, when lid 31 and filler pipe 11 keep away from the one side threaded connection who holds the chamber, external fluid just can not pour into the holding chamber into, and lid 31 can keep apart impurity such as dust in the outside air and enter into the holding chamber, thereby pollute the fluid that holds the intracavity, lid 31 also can prevent to hold intracavity fluid and spill from filler pipe 11, when lid 31 is detached from filler pipe 11 one side that holds the chamber, external fluid can pour into the holding intracavity through filler pipe 11.

The oil tank that this embodiment provided, as shown in fig. 4, the closing cap subassembly still includes sealing member 32 and filter screen 33, sealing member 32 sets up between the helicitic texture of filler pipe 11 and the helicitic texture of lid 31, filter screen 33 sets up in filler pipe 11, be used for filtering by external oil source injection to hold the impurity in the intracavity, sealing member 32 sets up between the helicitic texture of filler pipe 11 and the helicitic texture of lid 31, be favorable to lid 31 and filler pipe 11 to be connected inseparabler, prevent that impurity in the outside air from entering into and hold the intracavity or the fluid that holds the intracavity from filling oil pipe 11 spills, in this embodiment, sealing member 32 is rubber seal, filter screen 33 sets up in filler pipe 11, be favorable to filtering the impurity in the external fluid that pours into the holding intracavity, prevent external fluid from polluting the original fluid that holds the intracavity.

The oil tank that this embodiment provided is provided, as shown in fig. 1, is provided with strengthening rib 13 on the surface of casing 1, and strengthening rib 13 cross section's shape is triangle-shaped, sets up strengthening rib 13 on the surface of casing 1, is favorable to strengthening casing 1's intensity, prevents that casing 1 from receiving the striking of holding intracavity fluid or some external force's striking from taking place to break to make the fluid in the oil tank spill.

Of course, in an alternative embodiment, the cross section of the reinforcing rib 13 may be semicircular, and the semicircular reinforcing rib 13 can also strengthen the strength of the shell 1, so as to prevent the shell 1 from being broken by the impact of the oil in the accommodating cavity or the impact of some external force, thereby leaking the oil in the oil tank.

Of course, in an alternative embodiment, the cross section of the reinforcing rib 13 may be rectangular, and the rectangular reinforcing rib 13 can also strengthen the strength of the casing 1, so as to prevent the casing 1 from being broken by the impact of the oil in the accommodating cavity or the impact of some external force, thereby leaking the oil in the oil tank.

Of course, in an alternative embodiment, the cross section of the reinforcing rib 13 may be one or more of triangle, semicircle and rectangle, so as to strengthen the strength of the housing 1 and prevent the housing 1 from being broken by the impact of the oil in the accommodating cavity or the impact of some external force, so that the reinforcing rib 13 leaking out of the oil in the oil tank can be used as the reinforcing rib 13 in the present embodiment, and the cross section of the reinforcing rib 13 may be any shape, which is not explained herein too.

The oil tank that this embodiment provided, as shown in fig. 1, still be provided with oil level detection portion 14 on the casing 1, oil level detection portion 14 is suitable for the oil level gauge and stretches into and hold the intracavity, and oil level detection portion 14 is a circular shape through-hole, and the oil level gauge stretches into and holds the intracavity through oil level detection portion 14 to be connected with casing 1, thereby observe the memory space that holds intracavity fluid through the oil level gauge, in order to in time carry out the oiling to the oil tank, prevent to hold intracavity fluid and use up but can not get the replenishment, thereby damage the engine of harvester.

In the oil tank provided in this embodiment, as shown in fig. 1, the upper end of the housing 1 is further provided with a ventilation part 15, and the ventilation part 15 is adapted to connect with a ventilation valve and a containing cavity, so that the containing cavity is communicated with the outside; the caliber size of the ventilation part 15 is smaller than that of the oil level detection part 14 and the oil return part 12, the ventilation part 15 is a circular through hole, the ventilation valve is arranged on the shell 1 through the ventilation part 15 and is communicated with the containing cavity, so that the containing cavity is communicated with the outside, the air pressure in the containing cavity is guaranteed to be consistent with the air pressure of the outside, and the shell 1 is prevented from being deformed and damaged due to the fact that the air pressure in the containing cavity is inconsistent with the air pressure of the outside.

The oil tank that this embodiment provided, as shown in fig. 1, be provided with oil level indicator 16 on casing 1 lateral wall, oil level indicator 16 is configured to instruct the oil level that holds the intracavity, oil level indicator 16's both ends respectively with hold the chamber intercommunication, and oil level indicator 16's one end sets up with being close to oiling portion one side, oil level indicator 16's the other end sets up with keeping away from oiling portion one side, oil level indicator 16 is the oil level indication pipe, oil level indicator 16's both ends run through casing 1 respectively and are linked together with holding the chamber, the fluid in holding the intracavity flows into the oil level indication pipe, because the atmospheric pressure in holding the intracavity remains the same with the atmospheric pressure of external world throughout, therefore the height that holds intracavity fluid and the intraductal fluid of oil level indication are the same, therefore can observe the height that holds intracavity fluid through the oil level indication pipe, thereby judge whether need to hold intracavity oiling.

The oil tank that this embodiment provided, as shown in fig. 3, the bottom of casing 1 is provided with oil drain 17, oil drain 17 is suitable for and holds chamber and external through the shutoff of oil drain cover, oil drain 17 is circular through-hole, when holding the intracavity fluid and do not run out for a long time or hold the intracavity fluid and appear impurity, will hold the intracavity fluid and emit through unloading the oil drain cover on oil drain 17, prevent that newly injected fluid from receiving the pollution, when holding intracavity fluid and having put out, through oil drain cover shutoff oil drain 17, avoid holding intracavity fluid and spill.

Example 2

The present embodiment provides a harvester including the oil tank provided in embodiment 1. The harvester of above-mentioned structure is through having adopted foretell oil tank, and the band portion of harvester and the spacing groove 21 on the oil tank casing 1 conform the form fit, and the band of band portion is tightened spacing groove 21 and is encircleed spacing groove 21 round, is favorable to fixed oil tank on the harvester, restricts the removal of oil tank on the harvester, and oil return portion 12 on the oil tank casing 1 is connected with the engine of harvester, thereby makes the fluid that holds the intracavity input to the engine burn and gives harvester power, makes harvester work.

According to the oil tank provided by the utility model, the shell 1 is arranged to be of an integrated structure, so that the situation that the oil tank cannot be finished or is scrapped due to errors when a plurality of parts are used for welding and combining in the manufacturing process of the oil tank is avoided, the production efficiency of the oil tank is improved, the shell 1 is provided with the containing cavity suitable for containing oil, the shell 1 is also provided with the oil injection part and the oil return part 12, the oil injection part is communicated with the outside, the oil is injected into the containing cavity through the oil injection part, the oil return part 12 is communicated with the harvester engine, the oil in the containing cavity is injected into the harvester engine through the oil return part 12, the limiting part is formed on the outer wall surface of the shell 1 and suitable for being matched with the belt part of the harvester in a shape, the movement of the oil tank on the harvester is favorably limited, the sealing cover assembly is detachably arranged on the oil injection part, the sealing cover assembly is provided with the sealing state of the sealing oil injection part for sealing the oil injection part and the outside, the sealing state of the sealing the oil injection part is favorable for preventing outside dust from entering the containing cavity and polluting the oil, and the sealing state is separated from the oil injection part and communicated with the external oil source.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (11)

1. An oil tank adapted to be mounted to a belt portion of a harvester, comprising:

the harvester comprises a shell (1), wherein the shell (1) is of an integrally formed structure, the shell (1) is provided with a containing cavity suitable for containing oil, the shell is further provided with an oiling part and an oil return part (12) which are communicated with the containing cavity, the oiling part is suitable for being communicated with an external oil source, and the oil return part (12) is suitable for being communicated with a harvester engine;

the limiting assembly is arranged on the shell (1) and comprises a limiting part formed on the outer wall surface of the shell, and the limiting part is suitable for being matched with the belt part of the harvester in a conformal manner;

the sealing cover assembly is detachably arranged on the oiling part and is provided with a sealing state for sealing the oiling part and the outside, and a separating state for separating the oiling part and communicating the accommodating cavity with an external oil source.

2. The oil tank according to claim 1, wherein the limit portion is at least two limit grooves (21) concavely arranged from outside to inside, and at least two limit grooves (21) are arranged on two sides of the housing (1) opposite to the oil filling portion, and the limit grooves (21) are annularly arranged on the outer peripheral surface of the housing (1).

3. The fuel tank of claim 1, wherein the fuel tank is configured to provide a fuel,

the oil injection part is an oil injection pipe (11) with two ends communicated, and one end of the oil injection pipe (11) is communicated with the accommodating cavity;

the sealing cover assembly (3) comprises a cover body (31), and the cover body (31) is detachably connected with one side, far away from the accommodating cavity, of the filler pipe (11).

4. A tank according to claim 3, wherein the filler pipe (11) and the cover (31) are connected by a screw structure.

5. The fuel tank of claim 4, wherein the cap assembly further comprises:

a seal (32) provided between the screw structure of the filler pipe (11) and the screw structure of the cover (31);

the filter screen (33), filter screen (33) set up in filler pipe (11) for filter by external oil source injection hold impurity in the fluid in the intracavity.

6. The fuel tank according to claim 5, characterized in that a reinforcing rib (13) is provided on the outer surface of the housing (1), and the reinforcing rib (13) has a cross-sectional shape of one or more of a triangle, a semicircle and a rectangle.

7. The tank according to claim 6, characterized in that the housing (1) is further provided with an oil level detection portion (14), the oil level detection portion (14) being adapted for the oil level gauge to protrude into the accommodation chamber.

8. -tank according to claim 7, characterised in that the upper end of the housing (1) is also provided with a ventilation portion (15), which ventilation portion (15) is adapted to connect a ventilation valve with the containing chamber so as to communicate the latter with the outside;

the diameter size of the ventilation part (15) is smaller than the diameter sizes of the oil level detection part (14) and the oil return part (12).

9. The oil tank according to claim 8, characterized in that an oil level indicating portion (16) is provided on a side wall of the housing (1), the oil level indicating portion (16) is configured to indicate an oil level in the accommodating chamber, both ends of the oil level indicating portion (16) are respectively communicated with the accommodating chamber, and one end of the oil level indicating portion (16) is provided on a side close to the oil filling portion, and the other end of the oil level indicating portion (16) is provided on a side away from the oil filling portion.

10. -tank according to any one of the claims 6 to 9, characterised in that the bottom of the housing (1) is provided with a drain (17), which drain (17) is adapted to close off the containing chamber from the outside by means of a drain cap;

the oil drain part (17) is circular, rectangular, triangular, trapezoidal or parallelogram in shape.

11. A harvester comprising a tank according to any one of claims 1-10.

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