CN216922253U

CN216922253U - Engine oil pressure boosting and pressure controlling mechanism of vertical single-cylinder diesel engine

Info

Publication number: CN216922253U
Application number: CN202220951145.XU
Authority: CN
Inventors: 吕殿祥; 蒙振波; 梁联照
Original assignee: Guangdong Delux Diesel Engine Co ltd
Current assignee: Guangdong Delux Diesel Engine Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-08
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses an engine oil pressure boosting and pressure controlling mechanism of a vertical single-cylinder diesel engine, which comprises an engine oil pump shaft and a crankshaft, wherein a main oil duct of the engine oil pump shaft is communicated with a central oil duct of the crankshaft, and the engine oil pressure boosting and pressure controlling mechanism is characterized in that: the oil pressure cavity is a cylindrical inner cavity, pressure cavity openings are formed in two ends of the cylindrical inner cavity, and the two pressure cavity openings are sealed through hexagon head bolts, blocking pieces, paper gaskets and self-locking nuts. The utility model ensures the engine oil pressure by establishing the oil pressure cavity in the inner cavity of the crank throw, controls the engine oil pressure of the engine between 02-0.4MPa and ensures that the connecting rod and the crankshaft are fully lubricated.

Description

Engine oil pressure boosting and pressure controlling mechanism of vertical single-cylinder diesel engine

Technical Field

The utility model relates to the technical field of single cylinder engine cylinder bodies, in particular to an engine oil pressure boosting and pressure controlling mechanism of a vertical single cylinder diesel engine.

Background

At present, the single-cylinder diesel engine on the market, especially the vertical single-cylinder diesel engine, mostly adopts the oil mist splash lubrication mode, the oil pressure in the engine plays a role in guaranteeing the lubrication in the engine, the lubrication part of the engine is mainly provided with a crankshaft connecting rod mechanism, the lubricating oil in an oil pan is sucked into a main oil duct through the oil pump, then is sent to a crankshaft crank throw through the main oil duct, and enters a connecting rod shaft neck lubrication bearing bush through an oil hole of the crank throw for lubrication. The engine oil pressure of the vertical single-cylinder diesel engine needs to be established through the oil pressure cavity, and at present, the common vertical single-cylinder diesel engine has the problem of air leakage of the inner cavity, so that the pressure cavity inside cannot be established, and the engine oil pressure is too small. It is therefore necessary to establish an oil pressure boosting and pressure controlling mechanism to ensure sufficient lubrication between the connecting rod and the crankshaft. The oil pressure cavity of the crank throw of the crankshaft establishes oil pressure, so the sealing performance of the crank throw position plays an important role.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oil pressure boosting and pressure controlling mechanism of a vertical single-cylinder diesel engine, which overcomes the defects of the prior art.

The utility model adopts the following technical scheme to realize the purpose: the utility model provides a vertical single cylinder diesel engine oil pressure boost accuse pressure mechanism, includes engine oil pump shaft, bent axle, the main oil gallery and the bent axle center oil duct intercommunication of engine oil pump shaft, its characterized in that: the oil pressure cavity is a cylindrical inner cavity, pressure cavity openings are formed in two ends of the cylindrical inner cavity, and the two pressure cavity openings are sealed through hexagon head bolts, blocking pieces, paper gaskets and self-locking nuts.

The crank throw is provided with a crank throw lubricating hole which penetrates through the wall part of the crank throw to enable the oil pressure cavity to be communicated with the environment outside the crank throw.

The specification of the hexagon head bolt is M8X 75.

The self-locking nut is an M8 lock nut.

The paper pads and the retaining pieces are symmetrically arranged at openings at two ends of the crank, the hexagon head bolt penetrates through the inner cavity of the crank from the opening at one end of the crank, and the opening at the other end of the crank is locked by an M8 locking nut.

The utility model adopts the technical proposal to achieve the following beneficial effects:

according to the utility model, the oil pressure is ensured by establishing the oil pressure cavity in the inner cavity of the crank throw, the oil pressure cavity is arranged at the crank throw position of the crankshaft, the oil pressure cavity of the crank throw is communicated with the central oil duct of the crankshaft, openings at two ends of the inner cavity of the oil pressure cavity of the crank throw are sealed through the hexagon head bolt (M8X75), the stop sheet, the paper pad and the M8 locking nut, the sealing performance of the oil pressure cavity of the crank throw is ensured, the sealing performance of two ports of the inner cavity of the oil pressure cavity plays an important role, the oil pressure of the engine is controlled between 02-0.4MPa, and the full lubrication between the connecting rod and the crankshaft is ensured.

Drawings

FIG. 1 is an overall view of a crankshaft connecting rod mechanism of a vertical single cylinder engine of the present invention;

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

fig. 3 is a schematic view of the crankshaft structure of the present invention.

Description of reference numerals: the crank mechanism comprises a connecting rod mechanical assembly 1, a crankshaft 2, a baffle plate 3, a paper pad 4, a bolt 5, a key 6, a nut 7, a reinforcing washer 8, a transmission pin 9, a crankshaft timing gear 10, a gear ring 11, a flywheel 14, a connecting rod screw 20, a retainer ring 21, a piston pin 22, a spiral supporting reed oil ring 23, an oil pressure cavity 24, a crankshaft central oil passage 25, a piston 26, a crankshaft inclined oil passage 27, an M8 locking nut 28 and a crank lubricating hole 29.

Detailed Description

The technical solution is described in detail with reference to specific embodiments below.

As shown in fig. 1-3, the utility model discloses an oil pressure boosting and pressure controlling mechanism for a vertical single cylinder diesel engine, which comprises an oil pump shaft (not shown) and a crankshaft 2, wherein the oil pump shaft is connected with the crankshaft, a main oil duct (not shown) of the oil pump shaft is communicated with a crankshaft central oil duct, oil of an oil pan of the diesel engine body is sucked into the main oil duct by an oil pump, an oil pressure cavity 24 is arranged on a crank of the crankshaft 2, a crankshaft inclined oil duct 27 is connected with a crankshaft central oil duct 25 and the oil pressure cavity 24, so that the oil enters the oil pressure cavity 24 of the crank through the crankshaft central oil duct and the crankshaft inclined oil duct, the oil pressure cavity is a cylindrical inner cavity, two ends of the cylindrical inner cavity are provided with pressure cavity ports, and the two pressure cavity ports are sealed through a hexagon head bolt 5, a baffle 3, a paper pad 4 and a self-locking nut 28. The engine oil passing through the engine oil pump enters an inner cavity of the crank throw through an engine oil channel of the crankshaft, the inner cavity of the crank throw is provided with a certain storage space for storing part of the engine oil, and then two ends of the crank throw are sealed through the hexagon head bolt, the baffle, the paper pad and the self-locking nut.

The bell crank is provided with a bell crank lubrication hole 29 which penetrates through the wall of the bell crank to communicate the oil pressure chamber 24 with the environment outside the bell crank.

The specification of the hexagon head bolt 5 is M8X 75.

The self-locking nut 28 is an M8 lock nut.

The M8 lock nut is adopted for sealing instead of locking the ordinary nut, the phenomenon of air leakage caused by overlarge gaps among the ordinary nut, the gasket and the M8 bolt is avoided, and the good tightness of an engine oil pressure cavity of the crank is ensured, so that the minimum engine oil pressure required by the vertical single-cylinder diesel engine is guaranteed.

Because the two ends of the oil pressure cavity 24 have good sealing performance, the engine oil can be pressurized and controlled after entering the oil pressure cavity 24, the engine oil pressure is ensured, and the engine oil comes out from the crank lubricating hole 29 and lubricates the connecting rod mechanical assembly 1. As shown in fig. 1, the connecting rod mechanism assembly 1 includes a connecting rod and a bush disposed in a connecting rod axial hole, the axial hole of one end of the connecting rod is connected with a crank throw of a crankshaft through a connecting rod screw 20, the other end is connected with a piston 26 through a retainer ring 21 and a piston pin 22, and a spiral spring oil ring 23 is disposed on the circumferential wall of the piston 26. Two ends of the crankshaft are respectively connected with an engine oil pump shaft, a gear ring 11 and a flywheel 14.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the inventive concept, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides a vertical single cylinder diesel engine oil pressure boost accuse pressure mechanism, includes engine oil pump shaft, bent axle, the main oil gallery and the bent axle center oil duct intercommunication of engine oil pump shaft, its characterized in that: the oil pressure cavity is a cylindrical inner cavity, pressure cavity openings are formed in two ends of the cylindrical inner cavity, and the two pressure cavity openings are sealed through hexagon head bolts, blocking pieces, paper gaskets and self-locking nuts.

2. The engine oil pressure boosting and pressure controlling mechanism of the vertical single cylinder diesel engine according to claim 1, characterized in that: the crank throw is provided with a crank throw lubricating hole which penetrates through the wall part of the crank throw to enable the oil pressure cavity to be communicated with the environment outside the crank throw.

3. The engine oil pressure boosting and pressure controlling mechanism of the vertical single cylinder diesel engine according to claim 2, characterized in that: the specification of the hexagon head bolt is M8X 75.

4. The engine oil pressure boosting and pressure controlling mechanism of the vertical single cylinder diesel engine according to claim 3, characterized in that: the self-locking nut is an M8 lock nut.

5. The engine oil pressure boosting and pressure controlling mechanism of the vertical single cylinder diesel engine according to claim 4, characterized in that: the paper pads and the retaining pieces are symmetrically arranged at openings at two ends of the crank throw, and the hexagon head bolt penetrates through the inner cavity of the crank throw from the opening at one end of the crank throw and is locked by an M8 locking nut at the opening at the other end of the crank throw.