CN210118442U

CN210118442U - Flow control valve of gearbox lubricating system

Info

Publication number: CN210118442U
Application number: CN201920537638.7U
Authority: CN
Inventors: 徐卫星
Original assignee: ZHEJIANG DAXING TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG DAXING TECHNOLOGY Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-28
Anticipated expiration: 2029-04-19

Abstract

The utility model provides a flow control valve of a gearbox lubricating system, which comprises an outer shell and an end cover, wherein the center of the outer shell is provided with an oil hole channel, and the outer shell and the end cover are connected together through screw threads, an O-shaped sealing ring is arranged at the joint of the outer shell and the end cover, a spring seat and a valve sleeve are arranged on a step surface in an oil hole channel in the end cover, the outer surface of the valve sleeve is axially provided with a main oil way oil groove which penetrates through the front surface and the rear surface, a piston which can freely slide along the inner surface of the valve sleeve is arranged in the valve sleeve, a spring is arranged on the spring seat, a spring mounting hole is arranged at the tail end of the piston, a bypass oil hole penetrating through the front surface and the rear surface is arranged on the piston, the front end of the spring is positioned in the spring mounting hole, the spring seat is provided with an oil hole penetrating through the front surface and the rear surface, and the piston compresses the spring to move backwards in place under the action of oil pressure and then isolates and seals an oil path channel between the oil groove of the main oil path and the oil hole. The utility model discloses simple structure is novel compact, 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 and compact structure, eliminates a valve core structure, controls the opening and closing of a main oil way oil groove by a piston independently, greatly reduces the machining precision requirement of parts, and reduces the cost and the risk of failure of the work movement of a product.

The technical scheme of the invention is that the flow control valve of the gearbox lubricating system comprises an outer shell and an end cover, wherein the center of the outer shell is provided with an oil hole channel, 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 spring seat and a valve sleeve are arranged on a step surface in an oil hole channel in the end cover, the outer surface of the valve sleeve is axially provided with a main oil way oil groove which penetrates through the front surface and the rear surface, a piston which can freely slide along the inner surface of the valve sleeve is arranged in the valve sleeve, a spring is arranged on the spring seat, a spring mounting hole is arranged at the tail end of the piston, a bypass oil hole penetrating through the front surface and the rear surface is arranged on the piston, the front end of the spring is positioned in the spring mounting hole, the spring seat is provided with an oil hole penetrating through the front surface and the rear surface, and the piston compresses the spring to move backwards in place under the action of oil pressure and then isolates and seals an oil path channel between the oil groove of the main oil path and the oil hole.

Preferably, the valve sleeve is provided with through holes axially penetrating through the inner surface of the valve sleeve at the front end and the rear end of the oil groove of the main oil path, and the piston is positioned between the two through holes at the front end and the rear end in an oil-pressure-free state.

Preferably, the number of the oil holes in the spring seat is at least two, and the oil holes are uniformly distributed along the circumferential direction of the spring seat.

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, and greatly reduces the processing precision of parts, the cost and the risk of product failure by the piston moving downwards to the bottom and closing the main flow hole.

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 subjected to oil pressure;

FIG. 4 is a cross-sectional view of the oil plug in the direction A-A of FIG. 2 being retracted to the far left end to block the oil passage under the action of oil pressure;

wherein: 1-outer shell; 2-end cover; 3-O-ring seal; 4-spring seat; 5, valve sleeve; 6-main oil way oil groove; 7-a piston; 8, a spring; 9-spring mounting holes; 10-a bypass oil hole; 11-oil hole; 12-through hole.

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 in the center of the outer shell 1 and the end cover 2 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 spring seat 4 and a valve sleeve 5 are arranged on a step surface in the oil hole channel in the end cover 2, a main oil channel oil groove 6 penetrating through the front and rear surfaces is axially arranged on the outer surface of the valve sleeve 5, a piston 7 capable of freely sliding along the inner surface of the valve sleeve 5 is arranged in the valve sleeve 5, a through hole 12 penetrating through the inner surface of the valve sleeve 5 along the axial direction is processed at the front and rear end heads of the main oil channel 6 on the valve sleeve 5, the piston 7 is arranged at a position between the two through holes 12 at the front and, the oil-gas separating type oil-gas separating device is characterized in that bypass oil holes 10 penetrating through the front surface and the rear surface are formed in the piston 7, the front end of the spring 8 is located in the spring mounting hole 9, oil holes 11 penetrating through the front surface and the rear surface are formed in the spring seat 4, at least two oil holes 11 are formed in the spring seat 4 and are evenly distributed in the circumferential direction of the spring seat, and the piston 7 compresses the spring 8 to move backwards in place under the action of oil pressure to isolate and seal an oil path between the main oil path oil groove 6 and the oil holes 11.

Under normal conditions, the flow control valve of the present application is in an open state, and the lubricating oil 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 7 from the oil hole channel on one side of the outer housing 1, most of the lubricating oil enters the left side of the piston 7 through the through hole 12 of the valve sleeve 5 and the main oil channel oil groove 6, and then flows out from the oil hole channel on one side of the end cover 2 through the oil hole 11, and a small part of the lubricating oil directly passes through the piston 7 from the bypass oil hole 10 to lubricate the 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, strong oil pressure pushes the piston 7 to move leftwards to the leftmost step, the piston 7 seals the through hole 12 on the left side of the valve sleeve 5, and an oil path channel between the main oil path oil groove 6 and the oil hole 11 is cut off, so that the lubricating oil can only pass through the piston 7 from the bypass oil hole 10, the lubricating oil entering the gearbox is lubricated in a small amount of state, and the gearbox is in an effective lubrication and cooling state under 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 the center, shell body (1) and end cover (2) handing-over department are provided with O type sealing washer (3), its characterized in that: a spring seat (4) and a valve sleeve (5) are arranged on a step surface in an oil hole channel in the end cover (2), a main oil channel oil groove (6) which penetrates through the front surface and the rear surface is axially arranged on the outer surface of the valve sleeve (5), a piston (7) which can freely slide along the inner surface of the valve sleeve (5) is arranged in the valve sleeve (5), a spring (8) is arranged on the spring seat (4), a spring mounting hole (9) is arranged at the tail end of the piston (7), a bypass oil hole (10) penetrating through the front surface and the rear surface is arranged on the piston (7), the front end of the spring (8) is positioned in the spring mounting hole (9), the spring seat (4) is provided with an oil hole (11) penetrating through the front surface and the rear surface, and the piston (7) compresses the spring (8) to move backwards to a proper position under the action of oil pressure, and then an oil path channel between the oil groove (6) of the sealed main oil path and the oil hole (11) is isolated.

2. A transmission lubrication system flow control valve according to claim 1, characterised in that: the oil-free valve is characterized in that through holes (12) which penetrate through the inner surface of the valve sleeve (5) along the axial direction are machined in the end heads of the front end and the rear end of the valve sleeve (5) which are positioned at the oil groove (6) of the main oil way, and the piston (7) is positioned between the two through holes (12) at the front end and the rear end in an oil-free state.

3. A transmission lubrication system flow control valve according to claim 1, characterised in that: the number of the oil holes (11) in the spring seat (4) is at least two, and the oil holes are uniformly distributed along the circumferential direction of the spring seat.