JPS5832076Y2 - Lubricating oil supply device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a lubricating oil supply device for supplying lubricating oil to multiple locations. The purpose is to ensure the delivery of all the prescribed amount of lubricant, avoiding clogging problems without complications.

Next, embodiments of the present invention will be described in detail based on the drawings.

A lifting device 1 that pulls up planted culms in the field, a reaping device 2 that reaps the raised culms, and a feed chain that transports the cut culms toward the rear and upwards of the machine while changing its posture to a nearly horizontal position. A reaping section 5 is connected to a rear conveyance device 4 that delivers the straw to the husks, a threshing section 6 performs threshing and sorting while holding and conveying the shell culm with the feed chain 3, and a threshing section shreds the straw.
Alternatively, the waste straw processing unit 7, which discharges long straw without being shredded or bundled, is connected to a traveling machine base equipped with a crawler traveling device 8 in sequence, and the waste straw processing unit 7 is connected to a traveling machine base equipped with a crawler traveling device 8. The combine harvester is configured to continuously harvest and process the planted culms.

The reaping section 5 is pivotally connected to the fuselage so as to be swingable up and down about a horizontal axis X above the rear part thereof, and is connected to the fuselage frame 9.
A single-acting hydraulic cylinder 10 is interposed between the cylinder and the cylinder, and the reaping part is driven up and down by hydraulic pressure, which is an example of a fluid pressure type, and is used when going over a ridge, turning, or when driving during non-work such as when driving on the road. In order to raise the reaping part 5 and drive safely,
During work, it is configured so that it can be lowered to a desired height and travel in a predetermined manner.

The single-acting hydraulic cylinder 10 is configured to supply pressure oil from a hydraulic oil tank T by a hydraulic pump P directly connected to the engine E, and an intervening control valve V is provided in the middle thereof.
As a result of the operation, there are a state in which pressure oil is supplied to the hydraulic pressure supply chamber R1 of the hydraulic cylinder 10 to drive and raise the reaping section 5, a state in which the flow path is closed and the vertical movement of the reaping sections is stopped, and a state in which the hydraulic pressure supply chamber R1 is driven upward.
The structure is such that it can be switched to a state in which the reaping section 5 is lowered by its own weight while allowing one drop of oil to be drained.

A closed lubricating oil tank 12 is mounted on the upper horizontal frame 11 of the lifting device 1, and the inside of this tank 12 is partitioned by partition walls 13.
... Lead out the oil supply pipes 15 ... from each,
Oil supply pipes 15 are extended to various lubrication points such as the reaping device 2, the pulling device 1, the rear conveyance device 4, the feed chain 3, and the pivot portion of the reaping section.
The lubricating oil stored therein is distributed to the partitioned portions 14 by overflow, so that a predetermined amount of lubricating oil can be supplied to each of the above-mentioned lubrication points.

The upper part of the tank 12 and the closed non-hydraulic supply chamber R2 of the hydraulic cylinder 10 are connected through a ventilation pipe 16, and a branch pipe 17 opened to the atmosphere is connected in the middle of the ventilation pipe 16. A first check valve 18 is provided in the branch pipe 17 to allow only the intake of atmospheric air, and on the other hand, the vent pipe 16 is connected to the branch pipe 17 to the tank 12 side, and the inhaled atmosphere passes only to the tank 12 side. A second check valve 19 is provided to allow the hydraulic cylinder 10 to operate.
It is configured to suck in atmospheric air and supply the sucked atmospheric air to the tank 12 to pressurize the inside of the tank 12.

A float valve 20 is provided in each of the partition portions 14.
...... is installed inside, and compartment part 14...
・As the lubricating oil is discharged from inside, it follows the oil level, and when all the lubricating oil inside the compartment 14 is discharged, the communication port 21 with the oil filling pipe 15 ・Close the pressurized air supplied to the tank 12 through the communication port 21.
It is constructed to prevent leakage from...

The tank 12 is provided with a relief 22,
All the communication ports 21... are closed and the tank 1
When the internal pressure inside the tank 12 exceeds the set value, the pressurized air is discharged to the outside of the tank 12 by the action of the relief valve 22.
It is designed to prevent damage to the product.

In addition, when setting the volume of a certain partition part 14a to be larger than the volume of other partition parts so that the discharge of lubricating oil is delayed, as shown in FIG. 14a can be configured so that it can pass freely without incorporating a float valve, which has the advantage of eliminating the need for a relief valve.

In this case, the final pressurized air can also discharge anything clogged in the oil supply pipe 15a, and the pressurized air is also discharged through this oil supply pipe 15a to prevent mud etc. from clogging the oil supply pipe 15a. It also has the advantage of being able to prevent this.

In the figure, 24... is a float valve 20...
However, due to overflow, other compartments 14...
・This is a net to prevent water from leaking to other areas.

In order to pressurize the inside of the lubricating oil tank 12, various structures can be adopted, such as using changes in the liquid level of the hydraulic fluid tank T, or pressurizing with an air cylinder or the like. Collectively called.

The present invention is applicable not only to combines but also to all work vehicles and various devices that require lubrication to multiple locations.

In summary, the lubricating oil supply device according to the present invention is configured such that the tank 12 is divided by the overflow partition walls 13, and oil is supplied to each of the partitions 14. , a mechanism 23 for pressurizing the inside of the tank 12 is provided, and at least all of the partitioned parts 14 except those that will eventually become empty are filled with gas from inside the tank 12 only in the empty state. It is characterized by the provision of a float valve 20 for closing the oil supply path to prevent oil leakage.

In other words, the compartment portion 14 that partitions the inside of the tank 12...
By supplying lubricating oil from each to the lubricating points, the lubricating oil stored in the partitioned portions 14... can be supplied to the predetermined lubricating points in communication with each other, and a large amount is supplied to some points. It is now possible to supply a predetermined amount of lubricating oil to each lubricating point without the lubricating oil being supplied to the partitioned portion 1.
4. Lubrication pipe 15 that communicates with the lubrication point from...
Even if □... is constructed with a small diameter, it is possible to avoid clogging and poor supply as in the case of gravity flow, and ensure lubricating oil without complicating the piping system. We are now able to supply

Further, when the lubricating oil in the partitioned portion 14 becomes empty, the empty partitioned portion 14 is removed by the valve mechanism 20.
By preventing the gas in the tank 12 from flowing out through the lubrication pipe 15 etc., pressurized gas is Since it is possible to prevent the lubricant from flowing out from there, lubrication to other lubricated points is not immediately stopped.

[Brief explanation of drawings]

The drawings show an embodiment of the lubricating oil supply device according to the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is a vertical cross-sectional view showing the tank structure along with the lubricating oil supply system, and Fig. 3 is a different embodiment. FIG. 2 is a longitudinal cross-sectional view showing an example tank structure. 12...tank, 13...partition wall,
14...Dividing portion, 20...Float valve, 23...Pressure mechanism.

Claims (1)

[Scope of utility model registration request] The tank 12 is connected to an overflow partition wall 13...
It is configured so that oil is supplied from each of the partitioned parts 14, and a mechanism 23 for pressurizing the inside of the tank 12 is provided, and the tank 12 is provided with a mechanism 23 for pressurizing the inside of the tank 12.
Float valves 20 that close the oil supply path to all but the ones that will eventually become empty, to prevent gas from flowing out from the tank 12 only in the empty state.
A lubricating oil supply device characterized by being provided with...