Oil pan assembly for tractor

Abstract

The utility model belongs to the field of non-road internal combustion engine oil pans, and particularly relates to an oil pan assembly for a tractor, which comprises a body strengthening structure and an auxiliary strengthening structure, and the lower portion of the auxiliary strengthening structure is mounted on the outer side of the front end of the body strengthening structure through mounting bolts. The upper part of the auxiliary reinforcing structure is mounted on the side surface of the body through mounting bolts; the body strengthening structure comprises the oil pan for the tractor, a forward extending structure is arranged at the front end of the oil pan for the tractor, the oil pan assembly improves the strength of the oil pan body through the reasonable structural design, further improves the installation strength of the oil pan assembly through the side connecting structure, reduces the deformation amount of a front end oil pan fixing bolt, and improves the oil pan body strength. And the difficult problems of oil leakage of a triangular area of the oil pan, cracking of the oil pan, downward blowing and the like are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of off-road internal combustion engine oil sumps, and particularly relates to an oil sump assembly for a tractor. Background Art

[0002] The oil sump assembly is an important part of an internal combustion engine, mainly used for storing the engine oil required for normal operation; according to different structures, the oil sump is divided into a stamping oil sump and a casting oil sump. The casting oil sump has good structural stiffness and high strength. While storing the engine oil, it can also be used as the main beam of the whole machine to connect the front bracket assembly and the transmission assembly, making the whole machine reliable and durable.

[0003] The structural strength of the oil sump directly affects the use effect of the oil sump. In recent years, with the large-scale use of casting oil sumps for tractors, due to the weak structural strength of the oil sump (it is easy to generate stress and strain when subjected to impact loads), it has led to problems such as oil leakage at the joint surfaces of the oil sump with the cylinder block and the gear chamber (referred to as the "triangle area") and cracking of the casting oil sump. These problems can cause the loss of engine oil at least, and in severe cases, the oil sump can break; due to the limitation of the tractor wheelbase, on the premise that the tractor parts are not adjusted, considering the requirement of the lightest weight, the industry generally adopts a front-extended oil sump structure to connect the front bracket assembly. For models with a front-mounted gear chamber, the tractor fan is an air suction fan. During normal operation, the sucked air is blocked by the front-mounted gear chamber, and the air outlet direction is changed from horizontal backward to vertical downward. Because the traditional front-extended oil sump has no blocking structure, the vertically downward air will blow up the dust and straw on the ground and float near the engine hood. Since the tractor uses an air suction fan, these straws or dust will be adsorbed at the air inlet hood of the engine hood, reducing the air intake volume of the engine hood, and then affecting the heat exchange efficiency of the tractor, resulting in the problem of high water temperature of the whole machine caused by downward blowing. Therefore, it is particularly important to consider an oil sump assembly for a tractor to solve the problems of oil leakage in the triangle area, cracking of the oil sump, and downward blowing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an oil sump assembly for a tractor. The oil sump assembly improves the strength of the oil sump body through reasonable structural design, further improves the installation strength of the oil sump assembly through the side connection structure, reduces the deformation amount of the fixing bolts at the front end of the oil sump, and avoids the occurrence of difficult problems such as oil leakage in the triangle area of the oil sump, cracking of the oil sump, and downward blowing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An oil pan assembly for a tractor, including a body strengthening structure and an auxiliary strengthening structure. The lower part of the auxiliary strengthening structure is installed on the outer side of the front end of the body strengthening structure through mounting bolts, and the upper part of the auxiliary strengthening structure is installed on the side of the engine block through mounting bolts. The body strengthening structure includes an oil pan for the tractor. A forward extension structure is provided at the front end of the oil pan for the tractor. A downward air blowing baffle is installed above the forward extension structure. The downward air blowing baffle is fixedly installed above the forward extension structure through fixing screws M8 for the downward air blowing baffle to fill the middle gap of the forward extension structure and weaken the downward air blowing state of the tractor. The oil pan for the tractor is fixedly connected to the engine block assembly and the gear chamber assembly through fixing screws M8 for the oil pan and fixing bolts M8 for the oil pan respectively.

[0007] Further, the auxiliary strengthening structure includes side connection fixing bolts (engine block) M12, a side connection bracket, and side connection fixing bolts (oil pan) M16. Side connection fixing holes M16 are provided on the outer side of the front end of the oil pan for the tractor. The side connection bracket is fixed at the side connection fixing holes M16 at the front end of the oil pan through side connection fixing bolts (oil pan) M16, and the side connection bracket is fixedly installed on the side of the engine block through side connection fixing bolts (engine block) M12.

[0008] Further, a wave structure is provided on the side of the oil pan for the tractor. The wall thickness of the wave structure is 8 mm. On the one hand, the wave structure can reduce weight, and on the other hand, it can ensure that the deformation amount of the oil pan body during the lost foam molding process is reduced, and the stiffness of the oil pan body is improved.

[0009] Further, three annular ribs are provided in the inner cavity and on the outside of the oil pan for the tractor. Two groups of annular ribs are located at the front end of the oil pan for the tractor, and the other group of annular ribs is located at the rear end of the oil pan for the tractor.

[0010] Further, arc ribs are provided in the inner cavity of the oil pan for the tractor, and vertical ribs are provided on the outer wall of the oil pan for the tractor. The annular ribs are composed of the arc ribs in the inner cavity and the vertical ribs on the outside.

[0011] Further, reinforcing ribs and a central front-and-rear through rib are provided at the bottom around the inner cavity of the oil pan for the tractor. The central front-and-rear through rib is connected to the arc ribs. The reinforcing ribs and the central front-and-rear through rib connect the front and rear ends and the sides of the oil pan for the tractor into a whole.

[0012] Further, a cross-shaped rib is provided between the forward extension structure and the body of the oil pan for the tractor. The cross-shaped rib connects the forward extension structures on the left and right sides of the body, improving the overall connection structure strength of the oil pan for the tractor.

[0013] Furthermore, fan side guard fixing lugs are provided on both sides of the forward extension structure, and oil pipe fixing lugs are symmetrically provided on both upper sides of the oil pan of the tractor.

[0014] The beneficial effects of the present utility model are as follows: The oil pan assembly for a tractor provided by the present utility model starts from the actual use perspective and adopts a design concept of combining body strengthening and auxiliary strengthening. The main body of the oil pan side is designed with a wavy structure (side wavy structure) to reduce deformation during the casting process. At the same time, a multi-channel annular reinforcing rib structure is adopted on the inner cavity and outer wall of the oil pan to improve the bending resistance of the front end of the oil pan. Around the bottom reinforcing ribs, center front and rear through ribs, and bottom contour ribs following the shape are designed in the inner cavity of the oil pan to increase the thickness of the top plate and enhance the overall strength and stiffness. Cross-shaped ribs and inclined ribs of different lengths are adopted to strengthen the connection strength between the front and rear ends of the oil pan body. A left and right side connection structure (auxiliary strengthening structure) is adopted to strengthen the connection strength and reduce the bolt deformation amount. Through the structural arrangement of the lower blowing baffle, the problem of lower blowing is effectively improved. Generally speaking, through the innovative design of the above structures, the problems of oil leakage in the triangular area of the existing oil pan, cracking of the oil pan, and lower blowing are well solved. Description of the Drawings

[0015] Figure 1 It is an assembly connection schematic diagram when the oil pan assembly for a tractor of the present utility model is installed;

[0016] Figure 2 It is an overall view of the oil pan assembly for a tractor of the present utility model;

[0017] Figure 3 It is an exploded view of the oil pan assembly for a tractor of the present utility model;

[0018] Figure 4 It is a detailed view of the side connection structure of the oil pan assembly for a tractor of the present utility model;

[0019] Figure 5 It is a view of the inner cavity structure of the oil pan of the oil pan assembly for a tractor of the present utility model;

[0020] Figure 6 It is a view of the outer shape structure of the oil pan of the oil pan assembly for a tractor of the present utility model;

[0021] Figure 7 It is a cross-sectional view of the oil pan annular rib of the oil pan assembly for a tractor of the present utility model;

[0022] Figure 8 It is a cross-sectional view of the oil pan top plate and bottom plate of the oil pan assembly for a tractor of the present utility model;

[0023] Markings in the figure: 1. Body assembly, 2. Gear chamber assembly, 3. Front bracket assembly, 4. Flywheel plate assembly, 5. Tractor oil pan assembly, 6. Lower air blowing baffle fixing screw M8, 7. Lower air blowing baffle, 8. Side connection fixing bolt (body) M12, 9. Side connection bracket, 10. Side connection fixing bolt (oil pan) M16, 11. Tractor oil pan, 12. Oil pan fixing bolt M8, 13. Oil pan fixing screw M8, 15. Peripheral bottom reinforcing rib, 16. Arc rib, 17. Central front and rear through rib, 18. Side wave structure, 19. Vertical rib, 20. Cross rib, 21. Oblique rib, 22. Universal boss, 23. Fan side guard plate fixing tab, 24. Oil pipe fixing tab, 25. Side connection fixing hole M16, 26. Contour rib, 27. Auxiliary strengthening structure, 28. Body strengthening structure. Detailed implementation mode

[0024] Specific embodiment 1: The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. It should be noted that: in the present utility model, if there is no special explanation, all the implementation manners and preferred implementation methods mentioned in this article can be combined with each other to form a new technical solution. In the present utility model, if there is no special explanation, all the technical features and preferred features mentioned in this article can be combined with each other to form a new technical solution. The "range" disclosed in the present utility model can be in the form of one or more lower limits and one or more upper limits respectively. In the present utility model, unless otherwise specified, each reaction or operation step can be carried out in sequence or in order.

[0025] As shown in the specification appendix Figure 1 、specification appendix Figure 2 、specification appendix Figure 4As shown in the figure, a kind of oil pan assembly for a tractor of the present utility model mainly includes a body strengthening structure 28 and an auxiliary strengthening structure 27. During installation, the lower part of the auxiliary strengthening structure 27 is installed on the outer side of the front end of the body strengthening structure 28 through installation bolts, and the upper part of the auxiliary strengthening structure 27 is installed on the side of the engine body through installation bolts; the body strengthening structure 28 includes an oil pan 11 for the tractor. A front extension structure is provided at the front end of the oil pan 11 for the tractor, and a lower blowing baffle 7 is installed on the upper part of the front extension structure. During installation, the lower blowing baffle 7 is fixedly installed above the front extension structure through lower blowing baffle fixing screws M8×6 to fill the middle gap of the front extension structure and weaken the lower blowing state of the tractor; the oil pan 11 for the tractor is fixedly connected to the engine body assembly 1 and the gear chamber assembly 2 respectively through oil pan fixing screws M8×13 and oil pan fixing bolts M8×12;

[0026] As shown in the attached Figure 1 figure, when the oil pan assembly of the tractor of the present utility model is installed as a whole, the front end of the oil pan assembly is connected to the front bracket assembly 3, the rear end of the oil pan assembly is connected to the flywheel housing assembly 4, and the top surface of the oil pan assembly is connected to the engine body assembly 1 and the gear chamber assembly 2, and it plays the role of a main beam; the oil pan assembly for the tractor includes a body strengthening structure 28 and an auxiliary strengthening structure 27; on the basis of the body strengthening structure 28, the side connection of the auxiliary strengthening structure 27 is adopted to connect the front end of the oil pan to the side of the engine body, further improving the strength of the oil pan to reduce the bolt deformation amount.

[0027] As shown in the attached Figure 2 to the attached Figure 3 to the attached Figure 4 and the attached Figure 5As shown in the figure, the main components of the oil pan assembly for the tractor of the present utility model include the oil pan 11 for the tractor, the side connection bracket 9, and the lower air blowing baffle 7. Among them, the oil pan 11 for the tractor is fixedly connected to the engine block assembly 1 and the gear chamber assembly 2 respectively by 16 oil pan fixing screws M8 13 and 4 oil pan fixing bolts M8 12. The auxiliary strengthening structure 27 of the oil pan assembly for the tractor is a left and right side connection and installation structure. The left side connection bracket 9 is fixed at the front side connection fixing hole M16 25 of the oil pan through the side connection fixing bolt (oil pan) M16 10, and is fixed on the side of the engine block through 2 side connection fixing bolts (engine block) M12 8. The fixing method of the right side connection bracket 9 is the same as the structure of the left side connection bracket 9. Through the left and right side connection bracket structures (the left side connection bracket 9 and the right side connection bracket 9), the connection strength between the oil pan of the present utility model and the engine block can be ensured, the deformation amount of the front bolts can be reduced, and the oil leakage risk in the triangular area can be lowered. At the same time, the lower air blowing baffle 7 is installed above the forward extension structure of the oil pan of the present utility model, and the lower air blowing baffle 7 is fixed above the forward extension structure through 2 lower air blowing baffle fixing screws M8 6, filling the gap in the middle of the forward extension structure and effectively weakening the lower air blowing state of the tractor.

[0028] As shown in the attached drawings of the specification Figure 2 , the attached drawings of the specification Figure 5 , the attached drawings of the specification Figure 6As shown in the figure, the body strengthening structure 28 of the oil pan assembly for a tractor of the present utility model mainly consists of the following parts: The side of the oil pan 11 for the tractor adopts a wavy structure 18 with a wall thickness of 8 mm. This design layout can reduce weight on the one hand and ensure a reduction in the deformation of the oil pan body during the lost foam molding process during manufacturing on the other hand, improving the stiffness of the oil pan body and ensuring consistency. Three annular ribs are designed in the inner cavity and outside of the oil pan 11 for the tractor. Two groups of annular ribs are located at the front end of the chamber of the oil pan 11 for the tractor, and the other group of annular ribs is located at the rear end of the chamber of the oil pan 11 for the tractor. The starting point of this design is that the front end of the oil pan during use is subjected to much greater vertical and torsional impact loads than the rear end. The design layout of two in the front and one in the rear not only ensures the overall structural strength of the oil pan body but also achieves the purpose of weight reduction. The above-mentioned annular ribs are composed of an arc rib 16 in the inner cavity and a vertical rib 19 on the outside, connecting with the side and bottom surfaces of the oil pan, increasing the local cross-sectional area, reducing the local stress, and improving the bending resistance of the oil pan. Four bottom strengthening ribs 15 and a central front-back through rib 17 are designed in the inner cavity of the oil pan. The strengthening ribs 15, the central front-back through rib 17, and the annular ribs connect the front and rear ends and the side surfaces of the oil pan into a whole, bearing the force as a whole, strengthening the bottom of the inner cavity of the oil pan and enabling the oil pan to better withstand bending and torsional loads. The design is reasonable and reliable. At the same time, in order to ensure a higher working load-bearing capacity, further, a conformal contour rib can be provided on the bottom surface outside the oil pan, and the thickness of the top plate is thickened at the same time to further improve the load-bearing capacity of the oil pan. A cross-shaped rib 20 is provided between the front extension structure and the oil pan body to connect the left and right front extension structures, thereby improving the connection structure strength. Six inclined ribs with different lengths are designed at the rear end of the oil pan, and the inclined ribs are symmetric left and right, improving the connection strength between the rear end surface of the oil pan for the tractor and the body. Considering the supporting adaptability, fan side guard fixing lugs 23 adapted for the assembly of the fan side guard are provided on both sides of the front extension structure, and oil pipe fixing lugs 24 adapted for the fixed installation of the oil pipe are symmetrically provided on both sides of the upper part of the oil pan 11 for the tractor, being symmetric left and right, increasing the overall machine supporting adaptability.

[0029] As shown in the attached Figure 7 and the attached Figure 8 figure, for the oil pan assembly of the tractor of the present utility model, the thickness A1 at the strengthening rib of the bottom plate is 18 - 22 mm, the thickness A2 at the vertical rib on the side is 31 - 37 mm, the thickness A3 at the arc rib in the inner cavity is 16 - 20 mm, the thickness A4 of the top plate is 33 - 37 mm, and the width A5 at the strengthening rib of the bottom plate is 26 - 30 mm. Through the design and strengthening of the above-mentioned body structure, the overall strength and stiffness of the oil pan are improved, its load-bearing capacity is enhanced, and in combination with the simulation analysis results, the body is strengthened targeted, and the purpose of weight reduction is also achieved.

[0030] In summary, the utility model adopts the design concept of combining body strengthening and auxiliary strengthening. A wave structure is designed on the side main body to reduce deformation during the casting process. A multi-channel annular reinforcing rib structure is adopted to improve the bending resistance of the front end of the oil pan. Peripheral reinforcing ribs, a central through rib, and a bottom conforming contour rib are designed to increase the thickness of the top plate and enhance the overall strength and stiffness. Cross-shaped ribs and inclined ribs of different lengths are adopted to strengthen the connection strength of the front and rear ends and avoid the risk of resonance fracture. A left-right side connection structure is adopted to strengthen the connection strength and reduce the bolt deformation. A lower blowing baffle is designed to effectively improve the lower blowing problem. Through the implementation of the above solutions, the problems of oil leakage in the triangular area, cracking of the oil pan, and lower blowing problem existing in the prior art can be well solved, meeting the usage requirements of the oil pan for tractors. The above embodiments are only used to illustrate the technical solutions of the utility model and are not intended to limit them. Those of ordinary skill in the art should understand that the specific implementation modes of the utility model can be modified or equivalently replaced by referring to the above embodiments. Any modification or equivalent replacement that does not depart from the spirit and scope of the utility model is within the scope of protection of the claims pending for approval.

Claims

1. An oil pan assembly for a tractor, characterized in that, It includes a body strengthening structure (28) and an auxiliary strengthening structure (27). The lower part of the auxiliary strengthening structure (27) is installed on the outer side of the front end of the body strengthening structure (28) through mounting bolts, and the upper part of the auxiliary strengthening structure (27) is installed on the side of the machine body through mounting bolts. The body strengthening structure (28) includes an oil pan (11) for a tractor. A forward extension structure is provided at the front end of the oil pan (11) for the tractor. An under-blowing baffle (7) is installed on the upper part of the forward extension structure. The under-blowing baffle (7) is fixedly installed above the forward extension structure through under-blowing baffle fixing screws M8 (6) to fill the gap in the middle of the forward extension structure and weaken the under-blowing state of the tractor. The oil pan (11) for the tractor is fixedly connected to the machine body assembly (1) and the gear chamber assembly (2) respectively through oil pan fixing screws M8 (13) and oil pan fixing bolts M8 (12).

2. The oil pan assembly for a tractor according to claim 1, wherein, The auxiliary strengthening structure (27) includes side connection fixing bolts (for the machine body) M12 (8), a side connection bracket (9), and side connection fixing bolts (for the oil pan) M16 (10). A side connection fixing hole M16 (25) is provided on the outer side of the front end of the oil pan (11) for the tractor. The side connection bracket (9) is fixed at the side connection fixing hole M16 (25) on the front end side of the oil pan through side connection fixing bolts (for the oil pan) M(16) 10, and the side connection bracket (9) is fixedly installed on the side of the machine body through side connection fixing bolts (for the machine body) M12 (8).

3. The oil pan assembly for a tractor according to claim 1, characterized in that, The side of the oil pan (11) for the tractor is provided with a wavy structure (18), and the wall thickness of the wavy structure (18) is 8 mm.

4. A tractor oil pan assembly according to claim 1, characterized in that, Three annular ribs are provided in the inner cavity and on the outside of the oil pan (11) for the tractor. Two groups of annular ribs are located at the front end of the oil pan (11) for the tractor, and the other group of annular ribs is located at the rear end of the oil pan (11) for the tractor.

5. A tractor oil pan assembly according to claim 4, characterized in that, An arc rib (16) is provided in the inner cavity of the oil pan (11) for the tractor, and a vertical rib (19) is provided on the outer wall of the oil pan (11) for the tractor. The annular rib is composed of the arc rib (16) in the inner cavity and the vertical rib (19) on the outside.

6. The oil pan assembly for a tractor according to claim 5, characterized in that, Reinforcing ribs (15) and a central front-and-rear through rib (17) are provided at the bottom around the inner cavity of the oil pan (11) for the tractor. The central front-and-rear through rib (17) is connected to the arc rib (16). The reinforcing ribs (15) and the central front-and-rear through rib (17) connect the front and rear ends and the sides of the oil pan (11) for the tractor into a whole.

7. A tractor oil pan assembly according to claim 1, characterized in that, A cross-shaped rib (20) is provided between the forward extension structure and the body of the oil pan (11) for the tractor. The cross-shaped rib (20) connects the forward extension structures on the left and right sides of the body of the oil pan (11) for the tractor to improve the overall connection structure strength of the oil pan (11) for the tractor.

8. The oil pan assembly for a tractor according to claim 7, characterized in that, Fan side guard plate fixing lugs (23) are provided on both sides of the forward extension structure, and oil pipe fixing lugs (24) are symmetrically provided on both sides of the upper part of the oil pan (11) for the tractor.

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