CN202560255U

CN202560255U - Inserting type hard sealing bidirectional lock

Info

Publication number: CN202560255U
Application number: CN2012201476651U
Authority: CN
Inventors: 李福洪; 朱述群
Original assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Current assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-11-28
Anticipated expiration: 2022-04-10

Abstract

The utility model discloses an inserting type hard sealing bidirectional lock which comprises an inserting type hydraulic check valve component. A spring is arranged in a threaded sleeve, and the other end of the spring is supported inside a valve core. The valve core is connected onto a valve seat on the threaded sleeve through the action of a spring and threads to form conical face hard sealing, a large spring is sleeved at the other end of the valve seat and forms conical face hard sealing with a large valve core, and the whole forms the inserting type hydraulic check valve component. According to the inserting type hard sealing bidirectional lock, an inserting type sealing structure is utilized, the system integrated level is high, the reliability is strong, the size is small, the service life is long, mounting and maintenance are easy, and the bidirectional lock can be repaired by exchanging the inserting type hydraulic check valve component directly, so that the bidirectional lock is simple, convenient and reliable.

Description

A kind of plug-in hard sealing two-way lock

Technical field

The utility model relates to a kind of reversible lock, relates in particular to the plug-in hard sealing two-way lock of hydraulic support balance jack.

Background technology

Reversible lock plays important effect as the Hydraulic Elements of the two-way locking control of hydraulic cylinders such as colliery support compensating cylinder, wall supporting cylinder, and the reliability direct relation of reversible lock the security and stability of each parts of support.Along with the colliery instructions for use more and more develops with automation direction towards integrated; Reliability and application life require also increasingly high; Traditional reversible lock is owing to adopt the conical surface seal of valve pad sealing or polyformaldehyde material, and application life and accommodative ability of environment are not enough, and valve pad is easy to destroy under the extruding repeatedly of valve seat; The sealing of conical surface polyformaldehyde also can be caused seal failure by cinder or other hard thing destruction; The part kind of valve inner is many, repairs also very inconvenience, has more and more satisfied not the demand of colliery applying unit.In this case, we design, produce a kind of dependable performance through independent research, and compact conformation, adaptive capacity are strong, and installation, maintenance is reversible lock easily, satisfies user's use needs.

The utility model content

The purpose of the utility model provides a kind of plug-in hard sealing two-way lock, with reversible lock application life that solves prior art and the problem that adaptive capacity is low, integrated level is low and installation, maintenance is difficult.

In order to achieve the above object, the technical scheme that the utility model adopted is:

A kind of plug-in hard sealing two-way lock; Comprise plug-in hydraulically-controlled one-way valve assembly, there is spring swivel nut inside, and the other end of spring is against valve core inside; Spool seals through spring action and the valve seat and the formation conical surface that are threaded on the swivel nut firmly; The spool other end is with big spring and forms the conical surface with big valve core and seals firmly, the whole plug-in hydraulically-controlled one-way valve assembly that forms, and two cover plug-in hydraulically-controlled one-way valve assemblies are placed in the valve body.

The plug-in hard sealing structure is adopted in this practicality, and level of integrated system height, good reliability, little, the long service life of volume are easy to installation and maintenance, directly repairs this reversible lock through changing the plug-in hydraulic package, and is simple and convenient reliable.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 bows for the utility model structure and cuts open sketch map.

The specific embodiment

A kind of plug-in hard sealing two-way lock; Comprise plug-in hydraulically-controlled one-way valve assembly, there is spring 2 swivel nut 1 inside, and the other end of spring 2 is against spool 3 inside; Spool 3 seals through spring 2 effects and the valve seat 4 and the formation conical surface that are threaded on the swivel nut 1 firmly; Spool 3 other ends are with big spring 5 and form the conical surface with big valve core 6 and seal firmly, the whole plug-in hydraulically-controlled one-way valve assembly that forms, and two cover plug-in hydraulically-controlled one-way valve assemblies are placed in the valve body 7.

Two working chamber structures are identical; Its operating principle is following: the connected mode of this reversible lock is: the PA mouth connects reversal valve work sap cavity; The relative work sap cavity of reversal valve that the PB termination is corresponding with PA, the A mouth connects a chamber of wanting the locking oil cylinder, and the B mouth connects another chamber that needs locking of this oil cylinder.

When operating mode need be controlled A oil cylinder that mouth connects and stretches out; Reversal valve connects the work sap cavity of PA interface and opens feed flow; High-pressure work liquid gets into a PA mouth part and pushes spool open, and working solution gets into the back and gets into the oil cylinder locked cavity through the A mouth, and the chamber action of this oil cylinder is stretched out; Another part high-pressure work liquid promotes the push rod of another plug-in hydraulic package through the hydraulic control working hole of valve inner; The hydraulic package of opening opposite side separates spool and valve seat, when that chamber work that connects the B mouth is shunk, and stable time liquid.When the PA end stopped feed flow, spool formed the working solution locking that the metal hard-sealing collateral is held this oil cylinder working chamber with valve seat under the pressure of valve core spring that resets, and the initial sealing state that equally also returns to of the other end forms two-way locking steady working condition; When operating mode need be controlled B oil cylinder that mouth connects and stretches out, reversal valve connect the work sap cavity of PB interface and opens feed flow, formed and pairing action during PA confession liquid, finally realized two-way locking.

Because the utility model hydraulic package adopts the metal hard-sealing structure, improved the application life and the adaptive capacity of reversible lock greatly, dress formula structure makes maintenance more convenient.

Claims

1. a plug-in hard sealing two-way is locked; Comprise plug-in hydraulically-controlled one-way valve assembly, it is characterized in that: there is spring swivel nut inside, and the other end of spring is against valve core inside; Spool seals through spring action and the valve seat and the formation conical surface that are threaded on the swivel nut firmly; The spool other end is with big spring and forms the conical surface with big valve core and seals firmly, the whole plug-in hydraulically-controlled one-way valve assembly that forms, and two cover plug-in hydraulically-controlled one-way valve assemblies are placed in the valve body.