Oil pan for tractor and engine

Abstract

The utility model provides an oil pan for a tractor and an engine, and belongs to the technical field of tractors, the oil pan comprises an oil pan body, a plurality of straight line reinforcing ribs which are uniformly distributed are arranged on a first side wall and a second side wall of an inner cavity of the oil pan body, a plurality of reinforcing rib plates are arranged on the third side wall and the fourth side wall of an inner cavity of the oil pan body, the bottoms of the reinforcing rib plates make contact with the bottom of the inner cavity of the oil pan body, and the straight line reinforcing ribs, the reinforcing rib plates and the oil pan body are integrally formed. The oil pan is compact in structure, higher in structural strength and suitable for high-load working conditions, local stress concentration caused by curvature sudden change of the wave ribs is avoided, the defects of sand holes, air holes and the like in the casting process are greatly reduced, and the casting rejection rate of the oil pan is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tractor technical field, and particularly relates to an oil pan for tractor and engine. BACKGROUND

[0002] The oil pan for automobile is different from the oil pan for tractor, the oil pan for automobile is generally made by thin-walled stamping, and the oil pan for tractor is generally made by cast iron or aluminum alloy pouring, because the oil pan for tractor needs to bear load during the working process of the tractor.

[0003] For example, the utility model with the patent number CN202120235565.3 discloses a cast oil pan for tractor, which comprises a front end face, a rear end face, a left side face, a right side face, a bottom face and a cavity surrounded by the above-mentioned faces, the top face of the oil pan is connected with the engine body through positioning pins and bolts, and a plurality of disassembly pits are designed on the top face of the oil pan, the left side face and the right side face of the oil pan are provided with inwardly protruding wave-shaped reinforcing ribs, and reinforcing rib plates are arranged between the front end face and the bottom face of the oil pan and between the rear end face and the bottom face of the oil pan in the cavity of the oil pan, so that the strength of the oil pan is improved; the oil pan has high integration and high strength, is convenient to disassemble and meets the use requirements of the tractor.

[0004] However, the wave-shaped reinforcing ribs and the reinforcing inner plates have complex structures, and high-precision molds and process control are needed in the casting process, but defects such as sand holes and pores may still occur in the casting process, and the casting defects occur frequently, and the scrap rate is high. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an oil pan for tractor to solve the technical problems that the complex structures of the wave-shaped reinforcing ribs and the reinforcing inner plates may cause frequent casting defects (sand holes and pores) and a high scrap rate.

[0006] The technical scheme for solving the above-mentioned technical problems is as follows:

[0007] An oil pan for tractor, comprising an oil pan body, a plurality of straight reinforcing ribs are arranged on the first side wall and the second side wall of the inner cavity of the oil pan body, a plurality of reinforcing rib plates are arranged on the third side wall and the fourth side wall of the inner cavity of the oil pan body, the bottom of the reinforcing rib plate is in contact with the bottom of the inner cavity of the oil pan body, and the straight reinforcing ribs and the reinforcing rib plates are integrally formed with the oil pan body.

[0008] Preferably, the cross section of the straight reinforcing rib is one of a rectangle, a trapezoid and a triangle.

[0009] Preferably, the reinforcing rib plate comprises a first rib plate, which is provided with a plurality of blocks and is uniformly arranged on the third side wall and the fourth side wall of the inner cavity of the oil pan body, and the bottom of the first rib plate is in contact with the bottom of the inner cavity of the oil pan body.

[0010] Preferably, the cross section of the first rib plate is one of a right-angle trapezoid and a right-angle triangle.

[0011] Preferably, the thickness of the first rib plate gradually increases from top to bottom in the vertical direction.

[0012] Preferably, a plurality of through holes are formed in the first rib plate.

[0013] Preferably, the reinforcing rib plate further comprises a second rib plate, which is arranged on the third side wall and the fourth side wall of the inner cavity of the oil pan body, the bottom of the second rib plate is in contact with the bottom of the inner cavity of the oil pan body, and the second rib plate is located on both sides of the first rib plate and is in abutment with the straight-line reinforcing rib.

[0014] Preferably, the abutment position of the second rib plate and the straight-line reinforcing rib is provided with a round corner.

[0015] Preferably, an X-shaped flow guide groove is formed in the bottom of the inner cavity of the oil pan body, and the X-shaped flow guide groove is located directly below the abutment position of the second rib plate and the straight-line reinforcing rib.

[0016] An engine is provided with the oil pan for tractors.

[0017] Compared with the prior art, the oil pan for tractors has at least the following advantages:

[0018] The straight-line reinforcing rib and the reinforcing rib plate added in the oil pan can effectively increase the structural strength of the oil pan, and since the straight-line reinforcing rib and the reinforcing rib plate are integrally formed with the oil pan body, the oil pan has a compact structure and higher structural strength, and is suitable for high-load working conditions. Meanwhile, the linear structure of the straight-line reinforcing rib reduces the complexity of the mold, simplifies the casting process, uniformly disperses the load in a linear arrangement, avoids local stress concentration caused by the curvature of the wave-shaped rib, greatly reduces defects such as sand holes and pores that may occur during casting, and reduces the casting scrap rate of the oil pan. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is an axial view of the oil pan for tractors.

[0020] Fig. 2 It is a top view of the oil pan for tractors.

[0021] Fig. 3 It is a half-sectional view of the oil pan for tractors.

[0022] In the figure: oil pan body 100, first side wall 110, second side wall 120, third side wall 130, fourth side wall 140, X-shaped flow guide groove 150, straight rib 200, reinforcing rib plate 300, first rib plate 310, through hole 311, second rib plate 320, round corner 321. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The technical scheme of the utility model will be further described below in combination with the drawings of the embodiments of the utility model. The utility model is not limited to the following specific embodiments.

[0024] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the utility model, it should be understood that if the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the patent. For ordinary skilled persons in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0025] Please refer to Figs. 1 to 3 An oil pan for tractor, comprising an oil pan body 100, the inner cavity of the oil pan body 100 comprises a first side wall 110 (front side wall), a second side wall 120 (rear side wall), a third side wall 130 (left side wall), a fourth side wall 140 (rear side wall) and a bottom to form an inner cavity, and the top surface is connected with the engine body through positioning pins and bolts.

[0026] The first side wall 110 and the second side wall 120 of the inner cavity of the oil pan body 100 are provided with a plurality of straight reinforcing ribs 200 arranged uniformly, the third side wall 130 and the fourth side wall 140 of the inner cavity of the oil pan body 100 are provided with a plurality of reinforcing rib plates 300, the bottom of the reinforcing rib plate 300 is in contact with the bottom of the inner cavity of the oil pan body 100, and the straight reinforcing rib 200 and the reinforcing rib plate 300 are integrally formed with the oil pan body 100. The straight reinforcing rib 200 and the reinforcing rib plate 300 are added in the oil pan, which can effectively increase the structural strength of the oil pan, and because the straight reinforcing rib 200 and the reinforcing rib plate 300 are integrally formed with the oil pan body 100, the structure of the oil pan is compact and has higher structural strength, which is suitable for high load working conditions. At the same time, the linear structure of the straight reinforcing rib 200 reduces the complexity of the mold, simplifies the casting process, linearly arranges and uniformly disperses the load, avoids the curvature mutation of the wave rib to cause local stress concentration, greatly reduces the defects such as sand hole and air hole that may occur in the casting process, and reduces the casting scrap rate of the oil pan.

[0027] In a possible embodiment, the cross section of the straight reinforcing rib 200 is one of a rectangle, a trapezoid and a triangle. The rectangular straight reinforcing rib 200 or the trapezoidal straight reinforcing rib 200 or the triangular straight reinforcing rib 200 is a straight line or a parallel straight line structure, which can improve the structural strength of the oil pan, simplify the casting process, linearly arrange and uniformly disperse the load, avoid the curvature mutation of the wave rib to cause local stress concentration, and thus reduce the defects such as sand hole and air hole that may occur in the casting process, and reduce the casting scrap rate of the oil pan.

[0028] Specifically, the cross section of the straight reinforcing rib 200 is a rectangle.

[0029] Specifically, the cross section of the straight reinforcing rib 200 is a trapezoid.

[0030] Specifically, the cross section of the straight reinforcing rib 200 is a triangle.

[0031] In a possible embodiment, the reinforcing rib plate 300 includes a first rib plate 310, the first rib plate 310 is provided with a plurality of blocks and is arranged uniformly on the third side wall 130 and the fourth side wall 140 of the inner cavity of the oil pan body 100, and the bottom of the first rib plate 310 is in contact with the bottom of the inner cavity of the oil pan body 100. The plurality of first rib plates 310 arranged uniformly can improve the structural strength of the oil pan, and a preset interval is arranged between two adjacent first rib plates 310, which can effectively disperse the stress area of the oil pan, and thus adapt to high load working conditions.

[0032] In a preferred embodiment, the first rib plate 310 has a cross section in the shape of a right trapezoid or a right triangle. The right trapezoidal first rib plate 310 or the right triangular first rib plate 310 has a straight line or parallel straight line structure, which can simplify the casting process, reduce defects such as sand holes and pores in the casting process, and reduce the casting scrap rate of the oil pan.

[0033] Specifically, the first rib plate 310 has a cross section in the shape of a right trapezoid.

[0034] Specifically, the first rib plate 310 has a cross section in the shape of a right triangle.

[0035] In a preferred embodiment, the thickness of the first rib plate 310 gradually increases from top to bottom in the vertical direction. In order to improve the structural strength of the oil pan, the shape of the first rib plate 310 is set to gradually increase in thickness from top to bottom, that is, the bottom width of the first rib plate 310 is wider, and the top width of the first rib plate 310 is narrower. After the position close to the bottom of the first rib plate 310 is connected with the bottom and the side wall of the oil pan, the stress load of the oil pan is higher, and the bearing capacity is greater.

[0036] In a preferred embodiment, a plurality of through holes 311 are formed on the first rib plate 310, and the through holes 311 are uniformly arranged on the first rib plate 310. The through holes 311 not only improve the heat dissipation efficiency of the first rib plate 310, but also reduce the overall weight of the first rib plate 310.

[0037] Specifically, the through holes 311 are in the shape of a circle, a square, or a rhombus.

[0038] In a possible embodiment, the reinforcing rib plate 300 further comprises a second rib plate 320, which is arranged on the third side wall 130 and the fourth side wall 140 of the inner cavity of the oil pan body 100. The bottom of the second rib plate 320 is in contact with the bottom of the inner cavity of the oil pan body 100, and the second rib plate 320 is located on both sides of the first rib plate 310 and is in abutment with the straight rib 200. By arranging the second rib plate 320, the second rib plate 320 is arranged in four pieces at the four corners of the oil pan body 100, and the second rib plate 320 is in abutment with the straight rib 200, which can improve the structural strength of the four corners of the oil pan body 100 and prevent the four corners of the oil pan body 100 from cracking under high load conditions.

[0039] In a preferred embodiment, the second rib plate 320 is provided with a fillet 321 at the abutment position of the straight rib 200. By providing the fillet 321, the connection strength of the second rib plate 320 and the straight rib 200 can be increased, the casting stress concentration can be reduced, and the fracture at the connection position of the second rib plate 320 and the straight rib 200 can be prevented.

[0040] In a preferred embodiment, an X-shaped flow guide groove 150 is formed at the bottom of the inner cavity of the oil pan body 100, and the X-shaped flow guide groove 150 is located directly below the abutment position of the second rib plate 320 and the straight rib 200. The X-shaped flow guide groove 150 is beneficial for guiding the oil in the inner cavity of the oil pan body 100 to flow from the periphery to the center.

[0041] An engine is provided with the oil pan for tractors, and by installing the oil pan on the engine, the impact load resistance and the jolt resistance of the engine are higher due to the high structural strength and the low casting defects of the integrally cast oil pan.

[0042] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An oil pan for a tractor, characterized by comprising: The oil pan body is internally provided with a plurality of straight ribs arranged uniformly on the first and second side walls, and a plurality of reinforcing rib plates arranged on the third and fourth side walls, the bottom of the reinforcing rib plates being in contact with the bottom of the oil pan body, and the straight ribs and the reinforcing rib plates being integrally formed with the oil pan body.

2. The oil pan for a tractor as set forth in claim 1, characterized by The cross section of the straight ribs is one of rectangular, trapezoidal and triangular.

3. The oil pan for a tractor as set forth in claim 1, characterized by The reinforcing rib plates comprise first rib plates, each of which is arranged on the third and fourth side walls of the oil pan body and in contact with the bottom of the oil pan body.

4. The oil pan for a tractor as set forth in claim 3, characterized by The cross section of the first rib plates is one of right-angled trapezoidal and right-angled triangular.

5. The oil pan for a tractor as set forth in claim 4, characterized by The thickness of the first rib plates gradually increases from top to bottom in the vertical direction.

6. The oil pan for a tractor as set forth in claim 5, characterized by A plurality of through holes are formed in the first rib plates.

7. The oil pan for a tractor as set forth in claim 3, characterized by The reinforcing rib plates further comprise second rib plates arranged on the third and fourth side walls of the oil pan body and in contact with the bottom of the oil pan body, the second rib plates being located on both sides of the first rib plates and being in abutment with the straight ribs.

8. The oil pan for a tractor as set forth in claim 7, characterized by The abutment position of the second rib plates and the straight ribs is provided with a rounded corner.

9. The oil pan for a tractor as set forth in claim 8, characterized by The bottom of the oil pan body is provided with an X-shaped flow guide groove located directly below the abutment position of the second rib plates and the straight ribs.

10. An engine characterized by: The engine is provided with the oil pan of any one of claims 1-9.

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