阅读说明：本技术 一种发动机油底壳放油装置 (Oil drain device of engine oil pan ) 是由 赵国梁 于 2020-06-28 设计创作，主要内容包括：本发明公开了一种发动机油底壳放油装置,包括油底壳,所述油底壳的低端底面上成型有向下凸起的凸台,凸台上成型有上下贯穿的放油孔,放油孔内设有油塞；所述油塞包括与放油孔间隙配合设置的导向柱体,导向柱体穿过放油孔的上伸出端成型有凸环,导向柱体的中部成型有环形凹槽,环形凹槽上成型有两个斜向设置的相交的第一油道,导向柱体的内部成型有下侧开口的与两个第一油道相通的第二油道；所述导向柱体的上端成型有密封槽,密封槽内套接有密封圈,密封圈的外壁紧靠在放油孔的内壁上,所述密封圈位于环形凹槽的上侧。本发明可以有效避免对油底壳放油时润滑油滴溅在工人身上和有效避免滑丝现象。(The invention discloses an oil drain device of an engine oil pan, which comprises an oil pan, wherein a boss protruding downwards is formed on the bottom surface of the lower end of the oil pan, an oil drain hole penetrating up and down is formed on the boss, and an oil plug is arranged in the oil drain hole; the oil plug comprises a guide cylinder which is in clearance fit with the oil drain hole, a convex ring is formed on the guide cylinder by penetrating through the upper extending end of the oil drain hole, an annular groove is formed in the middle of the guide cylinder, two obliquely arranged crossed first oil ducts are formed in the annular groove, and a second oil duct which is opened at the lower side and communicated with the two first oil ducts is formed in the guide cylinder; the upper end of the guide cylinder is formed with a sealing groove, a sealing ring is sleeved in the sealing groove, the outer wall of the sealing ring is abutted against the inner wall of the oil drain hole, and the sealing ring is positioned on the upper side of the annular groove. The invention can effectively avoid lubricating oil from splashing on workers when the oil pan discharges oil and effectively avoid the phenomenon of thread slipping.)

1. The utility model provides an engine oil pan oil drain device, includes oil pan (1), its characterized in that: a boss (11) protruding downwards is formed on the bottom surface of the lower end of the oil pan (1), an oil drain hole (12) penetrating up and down is formed on the boss (11), and an oil plug (2) is arranged in the oil drain hole (12); the oil plug (2) comprises a guide cylinder body (21) which is arranged in clearance fit with the oil drain hole (12), a convex ring (22) is formed at the upper extending end of the guide cylinder body (21) which penetrates through the oil drain hole (12), an annular groove (23) is formed in the middle of the guide cylinder body (21), two obliquely arranged crossed first oil channels (24) are formed in the annular groove (23), and a second oil channel (25) which is opened at the lower side and is communicated with the two first oil channels (24) is formed in the guide cylinder body (21); the upper end shaping of guide cylinder (21) has seal groove (26), has cup jointed sealing washer (3) in seal groove (26), and the outer wall of sealing washer (3) is close to on the inner wall of oil drain hole (12), sealing washer (3) are located the upside of annular groove (23).

2. The oil drain device for the engine oil pan according to claim 1, characterized in that: a connecting column (4) which is vertical to the boss (11) is fixed on the outer wall of the boss, a rectangular hole (41) which is communicated with the oil drain hole (12) is formed at the inner end of the connecting column (4), and a threaded through hole (42) which is communicated with the rectangular hole (41) is formed at the outer end of the connecting column (4);

two right-angle trapezoidal holes (27) which are arranged in the front and at the back are formed in the lower end of the guide cylinder (21), and two sides of a second oil channel (25) are respectively arranged in the two right-angle trapezoidal holes (27); a right-angle trapezoidal block (51) is sleeved in each right-angle trapezoidal hole (27), and a first inclined surface (511) on the lower side wall of the right-angle trapezoidal block (51) is pressed against a second inclined surface (271) on the lower side wall of the right-angle trapezoidal hole (27); the two right-angle trapezoidal blocks (51) are respectively fixed at two ends of the U-shaped block (52), the U-shaped block (52) is inserted in the rectangular hole (41), the middle part of the U-shaped block (52) is fixedly provided with a step column body (53), the step column body (53) is inserted in the step hole (541) of the screw rod (54), and the outer end of the screw rod (54) is screwed in the threaded through hole (42); and a hexagonal hole (542) is formed at the outer end of the screw rod (54).

3. The oil drain device for the engine oil pan according to claim 2, characterized in that: the outer diameter of the large end of the step cylinder (53) is larger than the inner diameter of the small end hole of the step hole (541).

4. The oil drain device for the engine oil pan according to claim 2, characterized in that: a spring support (61) is fixed on the inner wall of the oil pan (1), a tension spring (62) is fixed on the spring support (61), and the other end of the tension spring (62) is fixed on the convex ring (22).

5. The oil drain device for the engine oil pan according to claim 1 or 2, characterized in that: the lower end of the guide column body (21) extends to the lower part of the boss (11), and the distance L1 between the lower end surface of the guide column body (21) and the lower end surface of the boss (11) is larger than the distance L2 between the upper end surface of the oil drain hole (12) and the upper side wall of the annular groove (23).

6. The oil drain device for the engine oil pan according to claim 2, characterized in that: and screw rod abdicating grooves (43) are formed on the upper side wall and the lower side wall of the rectangular hole (41).

7. The oil drain device for the engine oil pan according to claim 2, characterized in that: the outer contour of the end part of the U-shaped block (52) close to the step column (53) is matched with the inner wall of the rectangular hole (41).

Technical Field

The invention relates to the technical field of engines, in particular to an oil drain device of an engine oil pan.

Background

The oil pan is positioned at the lower part of the engine and is used for sealing the crankcase to be used as a shell of an oil storage tank, preventing impurities from entering, collecting and storing lubricating oil flowing back from each friction surface of the engine, dissipating part of heat and preventing the lubricating oil from being oxidized. After the transmitter operates for a period of time, the lubricating oil needs to be replaced, when the lubricating oil is replaced, oil pan screws screwed at the bottom of an oil pan are generally unscrewed, and then the lubricating oil flows downwards from threaded holes screwed with the oil pan screws; in the process of unscrewing the oil pan screw, lubricating oil flows out of the threaded hole and splashes on the body of a worker; or due to the increase of the lubricating oil replacing times, the thread of the threaded hole slips, and the oil pan screw cannot be screwed tightly or leaks oil.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an oil drain device of an engine oil pan, which can effectively avoid lubricating oil from splashing on workers when the oil drain device is used for draining oil to the oil pan and effectively avoid the phenomenon of thread slipping.

The scheme for solving the technical problems is as follows:

an oil drain device of an engine oil pan comprises the oil pan, wherein a boss protruding downwards is formed on the bottom surface of the lower end of the oil pan, an oil drain hole penetrating up and down is formed in the boss, and an oil plug is arranged in the oil drain hole; the oil plug comprises a guide cylinder which is in clearance fit with the oil drain hole, a convex ring is formed on the guide cylinder by penetrating through the upper extending end of the oil drain hole, an annular groove is formed in the middle of the guide cylinder, two obliquely arranged crossed first oil ducts are formed in the annular groove, and a second oil duct which is opened at the lower side and communicated with the two first oil ducts is formed in the guide cylinder; the upper end of the guide cylinder is formed with a sealing groove, a sealing ring is sleeved in the sealing groove, the outer wall of the sealing ring is abutted against the inner wall of the oil drain hole, and the sealing ring is positioned on the upper side of the annular groove.

A connecting column which is vertical to the boss is fixed on the outer wall of the boss, a rectangular hole which is communicated with the oil drain hole is formed at the inner end of the connecting column, and a threaded through hole which is communicated with the rectangular hole is formed at the outer end of the connecting column;

two right-angle trapezoidal holes which are arranged in the front and at the back are formed in the lower end of the guide cylinder body, and the two right-angle trapezoidal holes are respectively arranged on two sides of the second oil duct; a right-angle trapezoidal block is sleeved in each right-angle trapezoidal hole, and a first inclined surface on the lower side wall of each right-angle trapezoidal block is pressed against a second inclined surface on the lower side wall of each right-angle trapezoidal hole; the two right-angle trapezoidal blocks are respectively fixed at two ends of the U-shaped block, the U-shaped block is inserted and sleeved in the rectangular hole, the middle part of the U-shaped block is fixedly provided with a step column body, the step column body is inserted and sleeved in the step hole of the screw rod, and the outer end of the screw rod is screwed in the threaded through hole; and a hexagonal hole is formed at the outer end of the screw rod.

The outer diameter of the large end of the step column body is larger than the inner diameter of the small end hole of the step hole.

A spring support is fixed on the inner wall of the oil pan, a tension spring is fixed on the spring support, and the other end of the tension spring is fixed on the convex ring.

The lower end of the guide column body extends to the lower part of the boss, and the distance L1 between the lower end face of the guide column body and the lower end face of the boss is larger than the distance L2 between the upper end face of the oil drain hole and the upper side wall of the annular groove.

And screw rod abdicating grooves are formed on the upper side wall and the lower side wall of the rectangular hole.

The outer contour of the end part of the U-shaped block close to the step column body is matched with the inner wall of the rectangular hole.

The invention has the following outstanding effects: compared with the prior art, the oil pan oil drain device can effectively avoid lubricating oil from splashing on a worker when the oil pan is drained and effectively avoid the phenomenon of thread slipping.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2 taken about B-B;

FIG. 4 is a cross-sectional view of FIG. 3 taken about C-C;

fig. 5 is a cross-sectional view of fig. 4 taken about D-D.

Detailed Description