CN210484572U

CN210484572U - Flow control valve of gearbox lubricating system

Info

Publication number: CN210484572U
Application number: CN201920600803.9U
Authority: CN
Inventors: 徐卫星
Original assignee: Zhejiang Daxing Technology Co ltd
Current assignee: Zhejiang Daxing Technology Co ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-05-08
Anticipated expiration: 2029-04-29

Abstract

The technical scheme of the utility model a gearbox lubricating system flow control valve, shell body and end cover including inside being provided with the oilhole passageway and both being in the same place through threaded connection, shell body and end cover handing-over department are provided with O type sealing washer, be provided with the piston mounting hole in the end cover, install the piston in the piston mounting hole, the piston bottom is provided with the spring mounting hole, be provided with the spring in the spring mounting hole, the step department of the oilhole passageway in the end cover is fixed a position to the spring other end, be provided with the bypass oilhole of lining up front and back surface on the piston, the lateral wall surface of piston is provided with the main oil way oil groove of surface around the intercommunication piston, the piston supports the isolated sealed main oil way oil groove of step department in piston mounting hole bottom after oil pressure effect compression spring puts in place. The utility model discloses simple structure is novel compact, and spare part is small in quantity, uses safe and reliable, and is lubricated effectual.

Description

Flow control valve of gearbox lubricating system

Technical Field

The invention relates to a valve body, in particular to a flow control valve of a gearbox lubricating system.

Background

In the prior art, the traditional crankshaft splash lubrication mode is mostly adopted in the domestic automobile gearbox to ensure the lubrication of the gear and the cooling in the gearbox. With the development of the technology, an active lubrication mode is slowly adopted to design an active lubrication system of the gearbox, the active lubrication efficiency is high, and the lubrication system is not affected under the change of temperature. Some people have designed an application number 201610437208.9, the name is "a flow control valve of double clutch transmission lubricating system flow control device", though can carry out initiative lubrication, the switching of its main flow hole relies on the relative motion cooperation of case and piston to realize the adjustment, the cooperation department machining precision requirement of its case and piston is very high, need do a large amount of detection work to the part precision of processing, lead to whole with high costs, the switch in main flow hole relies on the chamfer between case and the piston to seal the cooperation and form, if processing the deviation appears, will lead to the control valve to close smoothly, and in long-time use, the chamfer fitting surface strikes wearing and tearing easily, lead to the piston to block the case and make control inefficacy.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a flow control valve of a gearbox lubricating system, which has a simple, compact and novel structure, a valve core structure is omitted, a piston independently controls the opening and closing of a main oil way oil groove, the machining precision requirement of parts is greatly reduced, and the cost and the risk of failure of the work movement of a product are reduced.

The technical scheme is that the flow control valve of the gearbox lubricating system comprises an outer shell and an end cover, wherein an oil hole channel is formed in the inner part of the outer shell and the end cover, the outer shell and the end cover are connected together through threads, an O-shaped sealing ring is arranged at the joint of the outer shell and the end cover, a piston mounting hole is formed in the end cover, a piston is mounted in the piston mounting hole, a spring mounting hole is formed in the bottom of the piston, a spring is arranged in the spring mounting hole, the other end of the spring is positioned at a step of the oil hole channel in the end cover, a bypass oil hole penetrating through the front surface and the rear surface is formed in the piston, a main oil path oil groove communicating the front surface and the rear surface of the piston is formed in the outer surface of the side wall of the.

Preferably, the piston end face is provided with a transverse oil groove, and the transverse oil groove is communicated with the main oil way oil groove.

Preferably, the bypass oil hole is opened in the transverse oil groove.

Preferably, the main oil channel oil groove and the transverse oil groove are rectangular grooves.

The invention has simple, novel and compact structure, safe and reliable use and good lubricating effect, simplifies the design scheme of the main flow hole, cancels the valve core structure, controls the opening and closing of the main flow hole by the piston independently, can close the main flow hole by the piston retreating to the bottom under the action of oil pressure, has less parts per se, reduces the processing precision requirement, is simple to assemble and reduces the cost and the risk of product failure.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view of the piston of FIG. 2 taken along A-A when the piston is not receiving oil pressure;

FIG. 4 is a sectional view of the piston of FIG. 2 in a direction A-A, when the piston is retracted to the rearmost end by oil pressure to block the oil passage;

wherein: 1-outer shell; 2-end cover; 3-O-ring seal; 4, a piston mounting hole; 5, a piston; 6-spring mounting hole; 7-a spring; 8-a bypass oil hole; 9-main oil channel oil groove; 10-transverse oil groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the invention provides a flow control valve of a gearbox lubricating system, which comprises an outer shell 1 and an end cover 2, wherein an oil hole channel is arranged inside the outer shell and the end cover are connected together through threads, an O-shaped sealing ring 3 is arranged at the joint of the outer shell 1 and the end cover 2, a piston mounting hole 4 is arranged in the end cover 2, a piston 5 is arranged in the piston mounting hole 4, a spring mounting hole 6 is arranged at the bottom of the piston 5, a spring 7 is arranged in the spring mounting hole 6, the other end of the spring 7 is positioned at the step of the oil hole channel in the end cover 2, a bypass oil hole 8 penetrating through the front and rear surfaces is formed in the piston 5, a main oil groove 9 communicating the front and rear surfaces of the piston 5 is formed in the outer surface of the side wall of the piston 5, and the piston 5 presses against the step at the bottom of the piston mounting hole 4 after the compression spring 7 moves backwards to a proper position under the action of oil pressure to isolate and seal the main oil path oil groove 9.

As a preferable scheme, the end face of the piston 5 is provided with a transverse oil groove 10, the transverse oil groove 10 is communicated with a main oil groove 9, the bypass oil hole 8 is formed in the transverse oil groove 10, the main oil groove 9 and the transverse oil groove 10 are both rectangular grooves, and the number of the main oil grooves 9 is two, and the two main oil grooves are respectively located on the opposite outer circumferential side walls of the piston 5 and are respectively communicated with two ends of the transverse oil groove 10.

Under normal conditions, the flow control valve of the present application is in an open state, and lubricating oil leading to the gear box can play a good lubricating and cooling function, as shown in fig. 3, the lubricating oil enters the right side of the piston 5 from the oil hole channel on one side of the outer shell 1, most of the lubricating oil enters the left side of the piston 5 after passing through the transverse oil groove 10 and the main oil groove 9, and then flows out through the oil hole channel in the end cover 2, and a small part of the lubricating oil directly passes through the piston 5 from the bypass oil hole 8 to lubricate parts in the gear box. When the gearbox works frequently or is in a limit working condition, in order to ensure normal lubrication and cooling of the gear in the gearbox, as shown in fig. 4, lubricating oil enters from the right end, the piston 7 is pushed by strong oil pressure to move leftwards to the step at the bottom of the piston mounting hole 4 on the left side, the main oil channel oil groove 9 on the outer wall of the piston 5 is blocked, and the lubricating oil can only pass through the piston 5 from the bypass oil hole 8, so that the lubricating oil entering the gearbox is kept in a small amount of state lubrication, and the gear is still in an effective lubrication and cooling state when the gearbox is in frequent gear shifting or the limit working condition.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a gearbox lubricating system flow control valve, is provided with oilhole passageway and both shell body (1) and end cover (2) through threaded connection together including inside, shell body (1) and end cover (2) handing-over department are provided with O type sealing washer (3), its characterized in that: be provided with piston mounting hole (4) in end cover (2), install piston (5) in piston mounting hole (4), piston (5) bottom is provided with spring mounting hole (6), be provided with spring (7) in spring mounting hole (6), the step department of spring (7) other end location oil hole passageway in end cover (2), be provided with bypass oilhole (8) of lining up front and back surface on piston (5), the lateral wall surface of piston (5) is provided with main oil circuit oil groove (9) of intercommunication piston (5) front and back surface, piston (5) are supported and are held at the isolated sealed main oil groove (9) of step department of piston mounting hole (4) bottom after oil pressure effect compression spring (7) backward motion targets in place.

2. A transmission lubrication system flow control valve according to claim 1, characterised in that: and a transverse oil groove (10) is formed in the end face of the piston (5), and the transverse oil groove (10) is communicated with the main oil way oil groove (9).

3. A transmission lubrication system flow control valve according to claim 2, characterised in that: the bypass oil hole (8) is formed in the transverse oil groove (10).

4. A transmission lubrication system flow control valve according to claim 2, characterised in that: and the main oil way oil groove (9) and the transverse oil groove (10) are rectangular grooves.