CN209800431U

CN209800431U - Oil filter device for self-propelled agricultural harvester

Info

Publication number: CN209800431U
Application number: CN201920473000.1U
Authority: CN
Inventors: 祝志浩; 张德学; 王立华
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2019-12-17
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses an oil filter device for self-propelled agricultural harvester belongs to agricultural harvesting machine, including oil absorption oil filter, oil return oil filter, back pressure valve, coupling etc. oil absorption oil filter, oil return oil filter set up respectively and install below the engine chassis and hydraulic tank's side, and the back pressure valve sets up below the oil return oil filter to install in hydraulic tank's side, the coupling is corresponding to be connected on the terminal surface of oil filter and back pressure valve. The utility model discloses the phenomenon of inhaling when not only having avoided hydraulic system low temperature to start can also greatly range promotion oil absorption oil filter's utilization ratio, makes oil filter life longer, can also reduce hydraulic system's vibrations, noise and air pocket scheduling problem, and factor of safety promotes by a wide margin, and the fault rate is littleer.

Description

Oil filter device for self-propelled agricultural harvester

Technical Field

The utility model relates to a configuration mode of a plurality of oil filters of mechanical hydraulic system in same system, specifically speaking are oil filter device for self-propelled agricultural harvester.

Background

At present, the suction oil filter and the return oil filter for the hydraulic system of the domestic traditional harvester are independently arranged (form a loop), so that the utilization rate of the suction oil filter is greatly reduced, and the suction phenomenon is easy to occur during low-temperature starting, the safety and the reliability of the hydraulic system are seriously damaged by the suction oil filter, the fault frequency of the hydraulic system is caused in the using process, and the service life is reduced. If the hydraulic system of the harvester adopts the foreign oil suction and return integrated oil filter, although the situation can be improved, foreign products have fewer samples, are difficult to select, are expensive, are difficult to replace, are not beneficial to the selection and matching of products, and have extremely high maintenance and maintenance cost for the products in the later period. At present, the production of the oil filter is in an attempt stage in China, and the selling price is close to abroad. The utility model discloses a plurality of oil filters of hydraulic system have effectively solved above problem at the configuration mode of same system.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is to solve above problem, provide an oil filter device for self-propelled agricultural harvester.

The utility model provides a technical scheme that its technical problem adopted is: (contents of technical requirements)

Due to the adoption of the technical scheme, the oil filter device for the self-propelled agricultural harvester is characterized in that a back pressure valve is arranged in a total oil return path, the upper end of a tee joint at the inlet end of the back pressure valve is connected with the total oil return line, and the lower end of the tee joint is connected with an oil filter pipeline of a closed system, wherein the purpose of the back pressure valve is to provide positive pressure when oil is supplemented to the closed pump of the traveling system, so that hydraulic oil can more easily pass through the oil filter, and the problems of emptying of the oil filter pump of the oil supplement pump in the closed pump and great reduction of the oil filter; casing oil return is connected at the oil outlet end of oil return filter through the radiator in the closed pump of traveling system, and its purpose is in order to make in the closed pump before the oil supplementing pump oil absorption, the oil that the oil return oil filter came out and the oil that comes out from the radiator carry out intensive mixing, reduce the hydraulic pressure oil temperature that gets into the closed pump of traveling system, and unnecessary miscella gets back to the oil tank through the back pressure valve simultaneously to supply work system, steering system circulation to use.

Compared with the traditional oil filter device, the suction phenomenon of the hydraulic system during low-temperature starting is avoided, and the utilization rate of the oil suction oil filter can be greatly improved. Because the precision of the oil filter can be combined at will according to needs, the service life of the oil filter can be longer, and the problems of vibration, noise, air pocket and the like of a hydraulic system can be reduced. Therefore, the safety factor is greatly improved, and the failure rate is lower; compared with an oil filter with integrated suction and oil return functions at an inlet in foreign countries, the oil filter has the advantages of richer selection, lower price and convenience in maintenance and replacement.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic partial isometric view of an oil filter assembly for a self-propelled agricultural harvester;

Fig. 2 is a schematic diagram of the hydraulic system of fig. 1.

In the figure: 1. a frame; 2. a cab; 3. a triple pump; 4. a hydraulic motor; 5. a gearbox axle; 6. an engine chassis; 7. A hydraulic oil tank; 8. an oil return filter; 9. a back pressure valve; 10. an oil suction filter; 11. a closed pump; 12. a working pump; 13. a steering pump; 14. an oil radiator; 15. connecting a hydraulic rubber pipe; 16. a fixing plate; 17. a support; 18. aligning the wire joints; 19. a right angle combination joint; 20. a right-angle tee joint combination joint; 21. a three-way combined joint; 22. an angle combination joint; 23. a bent pipe combined joint; 24. a small joint; 25. a large joint; 26 bypass valve.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the present invention may be made without departing from the scope of the present invention.

The utility model discloses an oil filter device for self-propelled agricultural harvester, return oil filter 8 is the filter of filtration work and turn to hydraulic system oil return, work and turn to hydraulic system oil return and get into return oil filter 8 through right angle combination joint 19 on the return oil filter 8 entrance point to nipple 18, the export termination of return oil filter 8 is to nipple 18, connect right angle tee bend combination joint 20 to nipple 18, the little joint 24 of tee bend combination joint 20 is linked together with the 11 casing oil return ways of closed pump after the cooling of oil radiator 14, its purpose is in order to make both fluid intensive mixing before getting into oil filter 10, reduce the oil temperature that gets into 11 oil circuits of closed pump; a bypass valve 26 is provided in the return oil filter 8 in order to open the bypass valve 26 when the filter element of the return oil filter 8 is clogged, thereby ensuring the normal operation of the hydraulic system.

The inlet end of the oil return filter 8 is connected with an oil return port of the working and steering hydraulic system, wherein the oil suction of the closed pump 11 is one part of an oil path of the oil return filter 8, the return oil of the working and steering hydraulic system is filtered by the oil return filter 8, the oil cleanliness is better, the oil suction of the closed pump 11 is further filtered at high precision by the oil suction filter 10, the oil cleanliness entering the closed pump 11 is better, and the high cleanliness of the closed system to hydraulic oil can be met to the maximum extent.

The oil suction oil filter 10 is a filter for filtering oil supplement of a traveling system, an elbow combination joint 23 at the inlet end of the oil suction oil filter 10 is connected with the lower end 21 of a three-way combination joint at the end of a counter-pressure valve 9 counter-thread joint 18 through a connecting hydraulic rubber hose 15, the counter-thread joint 18 at the other end of the counter-pressure valve 9 is installed on an oil port of a hydraulic oil tank 7, and 0.05MPa opening pressure is set, so that partial pressure always exists in a total oil return path to ensure that the closed pump 11 is not sucked empty when sucking oil, and the oil supplement safety of the closed pump 11 is ensured.

The sum of the oil return amount of the working and steering hydraulic systems through the oil return oil filter 8 and the oil return amount of the shell of the closed pump 11 is larger than the total oil suction amount of the closed pump 11, and redundant mixed hydraulic oil returns to the hydraulic oil tank through the backpressure valve, so that the integral stability of the hydraulic system of the whole machine is ensured to the maximum extent.

In the present embodiment, the filtration accuracy of the oil suction filter 10 is higher than that of the return oil filter 8, and the amount of oil sucked from the return passage is smaller than the total flow rate of the return passage.

The utility model discloses in, oil return way and oil absorption way can be understood into relevant arbitrary type's hydraulic system, and wherein the requirement of oil absorption way to hydraulic oil cleanliness is higher than the requirement of oil return way to hydraulic oil cleanliness.

In addition to the technical features described in the specification, the technology is known to those skilled in the art. The present invention is not limited to the embodiments, and any modifications or substitutions in the basic spirit of the embodiments are also within the scope of the present invention as claimed in the claims.

Claims

1. The utility model provides an oil filter device for self-propelled agricultural harvester, including the frame, the driver's cabin, the trigeminy pump, hydraulic motor, the gearbox bridge, engine chassis and hydraulic tank, the trigeminy pump, engine chassis, hydraulic tank all set up the back at the driver's cabin, and install on the relevant position of frame, hydraulic motor sets up and installs at gearbox bridge input end, its characterized in that still includes oil absorption oil filter, oil return oil filter, back pressure valve, coupling etc. oil filter sets up respectively and installs below the engine chassis and the side of hydraulic tank, the back pressure valve sets up below the oil return oil filter, and install in the side of hydraulic tank, the coupling corresponding connection is on the terminal surface of oil filter and back pressure valve.

2. The oil filter device as claimed in claim 1, wherein: the triple pump is formed by connecting a closed pump, a working pump and a steering pump in series, the closed pump, a hydraulic motor and an oil radiator are connected through a hydraulic rubber pipe to form a walking hydraulic system, the working pump and a working load form a working hydraulic system, and the steering pump and the steering load form a steering hydraulic system.

3. The oil filter device as claimed in claim 1, wherein: the oil suction filter is arranged below an engine underframe through a fixing plate, the return oil filter is arranged on the side surface of a hydraulic oil tank through a support, a bypass valve is arranged in the return oil filter, a back pressure valve is arranged below the return oil filter and on the side surface of the hydraulic oil tank, and the opening pressure in the back pressure valve is set to be 0.05 MPa.

4. The oil filter device according to claim 1 or 3, wherein: the pipe joint comprises a screw joint, a right-angle combined joint, a right-angle three-way combined joint, a three-way combined joint, an angle combined joint, a bent pipe combined joint and the like, the screw joint is respectively arranged on two end faces of an oil absorption filter, an oil return filter and a back pressure valve, the right-angle combined joint is arranged on the screw joint at the inlet end of the oil return filter, the right-angle three-way combined joint is arranged on the screw joint at the outlet end of the oil return filter, the back pressure valve is arranged on an oil port on the side face of a hydraulic oil tank through the screw joint at one end, the three-way combined joint is arranged on the screw joint at the other end of the back pressure valve, the angle combined joint is arranged on the screw joint at the outlet end of the oil absorption filter, and the.

5. the oil filter device according to claim 1 or 2, wherein: the working hydraulic system loop and the steering hydraulic system loop are converged by a connecting hydraulic rubber pipe and then enter the upper end of a right-angle combined joint of an oil return filter end, the right-angle three-way combined joint at the other end of the oil return filter is set to be a small joint and a large joint, the oil return of the walking hydraulic system passes through an oil radiator and then enters the right-angle three-way combined small joint, the right-angle three-way combined large joint of the oil return filter end is communicated with the upper end of a three-way combined joint of a backpressure valve end by the connecting hydraulic rubber pipe, the lower end of the three-way combined joint of the backpressure valve is communicated with a bent pipe combined joint of an inlet end of an oil suction filter by the connecting hydraulic rubber pipe.