Mounting structure of oil tank and engine

Abstract

The utility model provides an oil tank installation structure and an engine, the engine comprises a cylinder head and a wind scooper, the installation structure comprises an oil tank body, the oil tank is of an L-shaped structure and is provided with an inner side face and a bottom face, and the inner side face and the bottom face of the oil tank are provided with a first installation point position and a second installation point position respectively. The oil tank body is detachably mounted on the cylinder head and the wind scooper; wherein the first installation point position and the second installation point position have different installation directions. The oil tank installation structure solves the technical problems that in the prior art, an oil tank installation structure is not high in stability and insufficient in space utilization rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine oil tank, especially relates to an installation structure of oil tank and engine. BACKGROUND

[0002] In the technical field of engine, as the core component of fuel supply system, the rationality of the installation structure of oil tank directly affects the stability, maintenance convenience and overall layout compactness of engine. The traditional engine oil tank is usually fixed to a position of cylinder head or air scoop through a single direction installation point (such as bolt or buckle), and this kind of design has the following defects: first, the space utilization rate is insufficient. With the increasing demand for miniaturization and integration of engine, the regular shape (such as cuboid or cylinder) of traditional oil tank is difficult to adapt to the complex space between cylinder head and air scoop, resulting in limited installation position or occupying too much redundant space, which affects the layout of other components. Second, the installation stability is poor. The oil tank fixed in a single direction is prone to looseness or displacement under engine vibration working condition, and long-term use may cause fuel leakage risk, and it is difficult to disperse vibration stress through multiple point positions. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides an installation structure of oil tank and engine, which solves the technical problem of low stability of the oil tank installation structure in the prior art.

[0004] According to the embodiments of the utility model, the following technical scheme is adopted:

[0005] An installation structure of oil tank is applied to an engine, the engine includes a cylinder head and an air scoop, and the installation structure includes:

[0006] An oil tank body, the oil tank is in L-shaped structure and has an inner side and a bottom surface, the inner side and the bottom surface are respectively provided with a first installation point and a second installation point, and the oil tank body is detachably installed on the cylinder head and the air scoop through the first installation point and the second installation point;

[0007] Among them, the first installation point and the second installation point have different installation directions.

[0008] Preferably, the first installation point includes a plurality of first installation ears, and a plurality of first locking bolts are correspondingly arranged in the plurality of first installation ears.

[0009] Preferably, the first installation ear is provided with a first through hole through which the first locking bolt passes, and the first through hole penetrates along the up-down direction.

[0010] Preferably, the plurality of first installation ears are arranged at intervals; and / or

[0011] At least one of the plurality of first mounting ears is arranged at an angle of the inner side surface of the oil tank body.

[0012] Preferably, the first mounting ear is integrally formed with the oil tank body.

[0013] Preferably, the second mounting point comprises a plurality of second mounting ears, and a plurality of second locking bolts are arranged in one-to-one correspondence with the plurality of second mounting ears.

[0014] Preferably, the second mounting ear is provided with a second through hole through which the second locking bolt passes, and the second through hole penetrates in the front-rear direction.

[0015] Preferably, the plurality of second mounting ears are arranged in a staggered manner.

[0016] Preferably, the bottom surface of the oil tank body is provided with a positioning protrusion, the air deflector is provided with a mounting plate, the mounting plate protrudes outwardly and has a third mounting ear, and the third mounting ear is provided with a third through hole through which the positioning protrusion passes.

[0017] The utility model also provides an engine comprising the mounting structure of the oil tank.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the L-shaped oil tank body can closely fit the irregular space between the cylinder head and the air deflector, avoid the redundant occupation problem of the traditional regular-shaped oil tank, and significantly improve the compactness of the engine layout; meanwhile, through the bidirectional fixation of the first mounting point and the second mounting point, space mechanics complement each other, effectively disperse the multidirectional vibration stress of the engine during operation, and reduce the risk of oil tank loosening or displacement. The multidirectional mounting point can stably improve the rigidity of the overall mounting structure of the oil tank and prolong the fatigue life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structure schematic view of the oil tank body mounted on the engine in an embodiment of the utility model;

[0020] Fig. 2 It is a structure schematic view of the hidden oil tank body in an embodiment of the utility model;

[0021] Fig. 3 It is a structure schematic view of the oil tank body in an embodiment of the utility model.

[0022] In the above drawings: 1, cylinder head; 2, air deflector; 3, oil tank body; 4, first mounting point; 5, first mounting ear; 6, first through hole; 7, second mounting point; 8, second mounting ear; 9, second through hole; 10, mounting plate; 11, positioning protrusion; 12, third mounting ear; 13, third through hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and beneficial effects of the utility model clearer, the technical scheme of the utility model is further explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0024] Referring to Figs. 1 to 3 The utility model provides a kind of installation structure of oil tank, it is applied to engine, the engine includes cylinder head 1 and wind deflector 2, the installation structure includes:

[0025] Oil tank body 3, the oil tank is L type structure, and has inner side and bottom, its inner side and bottom are equipped with first installation point 4 and second installation point 7 respectively, for the oil tank body 3 can be detachably installed in the cylinder head 1 and the wind deflector 2;

[0026] Wherein, the first installation point 4 and the second installation point 7 have different installation directions.

[0027] In the embodiment, oil tank body 3 is designed as L type structure, can closely fit the irregular space between cylinder head 1 and wind deflector 2, avoids the redundancy occupation problem of traditional regular shape oil tank, significantly improves the compactness of engine overall layout;The inner side and bottom of oil tank body 3 are equipped with first installation point 4 and second installation point 7 respectively, and the installation point of different direction can constrain the degree of freedom of oil tank body 3, and multiple point fixing is combined with vibration suppression characteristics, can greatly reduce the risk of oil tank joint fatigue cracking caused by long-term vibration, reduce fuel leakage hidden danger;The cooperation of the structure of oil tank body 3 and installation point can not only improve the premise of oil tank overall volume, provide more stable and flexible installation mode, help to resist vibration and pressure in different directions, improve the stability of overall structure.

[0028] The first installation point 4 includes a plurality of first mounting ears 5, a plurality of first locking bolts (not shown) are correspondingly arranged in a plurality of the first mounting ears 5. Further, the first mounting ear 5 is provided with a first via hole 6 through which the first locking bolt passes, and the first via hole 6 penetrates in the up-down direction. Further, a plurality of the first mounting ears 5 are arranged at intervals;At least one of the plurality of first mounting ears 5 is arranged at the included angle of the inner side of the oil tank body 3.

[0029] In the embodiment, the first mounting point 4 includes two first mounting ears 5 arranged on the oil tank body 3, each of which is provided with a corresponding first locking bolt, and each mounting ear is secured by a locking bolt to ensure the firm connection between the oil tank body 3 and the engine. The first mounting ear 5 is provided with a through hole through which the first locking bolt passes, and the first through hole 6 penetrates in the up-down direction. The two first mounting ears 5 are arranged at intervals on the inner side of the oil tank, which can cover a larger range of mounting areas and avoid local stiffness mutation, and at the same time adapt to the fixing requirements of the curved surface or irregular connecting surface of the cylinder head 1. In addition, at least one first mounting ear 5 is arranged at the corner (i.e. L-shaped bending area) of the inner side of the oil tank body 3, which fully utilizes the structural strength advantage of the geometric corner. This position naturally has higher bending and torsional resistance, which can significantly inhibit the deformation of the oil tank under vibration or impact, and at the same time reduce the negative effects of bending moment caused by the weight of the oil tank on the mounting point.

[0030] The first mounting ear 5 is integrally formed with the oil tank body 3.

[0031] In the embodiment, the integrally formed process of the first mounting ear 5 and the oil tank body 3 eliminates the weak interface (such as welds, threaded holes, etc.) that may exist in traditional split welding or bolt connection, avoiding the risk of fatigue cracking at the connection due to long-term vibration. The integral structure ensures the continuity of the material of the mounting ear and the oil tank body 3, enhances the bending and shear resistance of the whole, and effectively resists the stress concentration problem at the root of the mounting ear caused by the increase in weight when the oil tank is full of fuel.

[0032] The second mounting point 7 includes a plurality of second mounting ears 8, and a plurality of second locking bolts (not shown) are arranged one by one in the plurality of mounting ears. Further, the second mounting ear 8 is provided with a second through hole 9 through which the second locking bolt passes, and the second through hole 9 penetrates in the front-rear direction. Further, the plurality of second mounting ears 8 are arranged in a staggered manner.

[0033] In the embodiment, the cooperation of the three second mounting ears 8 and the three second locking bolts forms a multi-point rigid connection between the bottom surface of the oil tank and the air deflector 2, and at the same time forms a spatial intersection with the first mounting point 4 on the inner side, which significantly improves the overall torsional resistance of the oil tank. The multi-point fixation on the bottom surface can evenly disperse the pressure of the oil tank weight and fuel load on the air deflector 2, avoiding local deformation, and is especially suitable for large-capacity oil tanks. The second through hole 9 penetrates in the front-rear direction, allowing the second locking bolt to pass horizontally from the front side of the oil tank into the air deflector 2, and forming an operation direction decoupling with the vertical direction of the first mounting point 4. The staggered arrangement of the three second mounting ears 8 can cover a larger range of fixed areas on the bottom surface of the oil tank.

[0034] The bottom surface of the oil tank body 3 is provided with a positioning protrusion 11, the air deflector 2 is provided with a mounting plate 10, the mounting plate 10 is outwardly protruded with a third mounting lug 12, and the third mounting lug 12 is provided with a third through hole 13 through which the positioning protrusion 11 can pass.

[0035] In the embodiment, the bottom surface of the oil tank body 3 is provided with a positioning protrusion 11, the air deflector 2 is provided with a mounting plate 10 outwardly protruded, the mounting plate 10 is provided with a third mounting lug 12, and the third mounting lug 12 is provided with a third through hole 13 through which the positioning protrusion 11 on the oil tank body 3 can pass, the third mounting lug provides an additional fixing point, and the mounting mode that the positioning protrusion 11 is inserted into the third through hole 13 can combine the self weight, and cooperates with the first mounting lug and the second mounting lug to form multiple mounting positions fixed in multiple directions, thereby enhancing the rigidity of the overall structure.

[0036] The embodiment also provides an engine comprising the mounting structure of the oil tank, and the specific structure of the engine is referred to the above embodiment. Since the engine adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0037] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and all of them should be covered in the scope of the claims of the utility model.

Claims

1. A fuel tank mounting structure applied to an engine, the engine including a cylinder head and a draft shroud, characterized in that, The mounting structure includes: The fuel tank body has an L-shaped structure and has an inner side and a bottom side. The inner side and the bottom side are respectively provided with a first mounting point and a second mounting point for detachably mounting the fuel tank body to the cylinder head and the air guide cover. The first installation point and the second installation point have different installation directions.

2. The mounting structure of a fuel tank according to claim 1, characterized in that, The first mounting point includes multiple first mounting ears, and multiple first locking bolts are respectively provided on the multiple first mounting ears.

3. The mounting structure of a fuel tank according to claim 2, characterized in that, The first mounting ear has a first through hole through which the first locking bolt can pass, and the first through hole extends vertically.

4. The mounting structure of a fuel tank according to claim 2, characterized in that, Multiple first mounting ears are spaced apart; and / or At least one of the plurality of first mounting ears is located at the angle between the inner and outer surfaces of the fuel tank body.

5. The mounting structure of a fuel tank according to any one of claims 2-4, characterized in that, The first mounting ear is integrally formed with the fuel tank body.

6. The mounting structure of a fuel tank according to claim 1, characterized in that, The second mounting point includes multiple second mounting ears, and multiple second locking bolts are respectively provided on the multiple mounting ears.

7. The mounting structure of a fuel tank according to claim 6, characterized in that, The second mounting ear is provided with a second through hole through which the second locking bolt passes, and the second through hole extends in the front-to-back direction.

8. The mounting structure of a fuel tank according to claim 6, characterized in that, The multiple second mounting ears are arranged in an alternating manner.

9. The mounting structure of a fuel tank according to claim 6, characterized in that, The bottom surface of the oil tank body is provided with a positioning protrusion, the air guide cover is provided with a mounting plate, the mounting plate has a third mounting ear protruding outward, and the third mounting ear is provided with a third through hole through which the positioning protrusion can pass.

10. An engine, characterized in that, The mounting structure for the fuel tank as described in any one of claims 1-9.

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