CN216078761U

CN216078761U - Hydraulic quick joint

Info

Publication number: CN216078761U
Application number: CN202121508059.3U
Authority: CN
Inventors: 郑礼深
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-03-18
Anticipated expiration: 2031-07-02

Abstract

The utility model relates to a hydraulic quick connector, which comprises a male connector and a female connector which are matched with each other; the male joint is in butt joint with the female joint, and the first one-way valve is communicated with the second one-way valve; the male connector is separated from the female connector, the end of the first valve core seals the first oil inlet hole under the action of the first spiral spring, and the end of the second valve core seals the second oil inlet hole under the action of the second spiral spring. This hydraulic pressure quick-operation joint's male joint can the high-speed joint switch on with female joint, and is easy and simple to handle, can be equipped with the several oil circuit simultaneously, compares single oil circuit, and its suitability is better, and simultaneously, male joint and female joint leakproofness under the detached state are better, can avoid the oil leakage oil leak.

Description

Hydraulic quick joint

Technical Field

The utility model relates to the technical field of hydraulic parts, in particular to a hydraulic quick connector.

Background

The related hydraulic joint generally comprises a male joint and a female joint which are connected together through a connecting sleeve in a threaded connection or a buckle connection, the male joint and the female joint are communicated or separated through a driving part, the hydraulic structure of the type can only meet a single hydraulic oil path, meanwhile, the connection and the communication of the male joint and the female joint are troublesome in operation and not convenient enough, and the oil leakage and oil leakage can occur after the male joint and the female joint are separated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing an improved hydraulic quick connector.

The technical scheme adopted by the utility model for solving the technical problems is as follows: constructing a hydraulic quick connector, which comprises a male connector and a female connector which are matched with each other; the male connector comprises a first valve seat, a plurality of first one-way valves arranged on the first valve seat and a plurality of first hydraulic oil channels arranged on the first valve seat, and each first one-way valve is communicated with each first hydraulic oil channel;

the first one-way valve comprises a shell arranged on the first valve seat and a first valve core arranged in the shell; the upper end of the shell protrudes out of the first valve seat, and the top of the shell is provided with a first oil inlet hole; the first check valve comprises a first valve core, a first oil guide channel communicated with the first hydraulic oil channel is arranged on the first valve core, a first limiting part extends outwards from the radial side surface of the first valve core, and a first spiral spring is sleeved on the periphery of the first valve core between the first limiting part and the bottom surface of the shell; the top of the first valve core can move along the first oil inlet hole to open or seal the first oil inlet hole;

the female joint comprises a second valve seat, a plurality of second one-way valves arranged on the second valve seat and a plurality of second hydraulic oil passages arranged on the second valve seat, and each second one-way valve is communicated with each second hydraulic oil passage; the second one-way valve comprises a shell arranged on the second valve seat and a second valve core arranged in the shell; a second oil inlet hole is formed in the top of the shell; a second oil guide channel communicated with the second hydraulic oil channel is arranged on the second valve core, a second limiting part extends outwards from the radial side surface of the second valve core, and a second spiral spring is sleeved on the periphery of the second valve core, which is positioned between the second limiting part and the bottom surface of the shell; the top of the second valve core can move along the second oil inlet hole to open or seal the second oil inlet hole;

the male joint is in butt joint with the female joint, and the first one-way valve is communicated with the second one-way valve; the male connector is separated from the female connector, the end of the first valve core seals the first oil inlet hole under the action of the first spiral spring, and the end of the second valve core seals the second oil inlet hole under the action of the second spiral spring.

Preferably, a first mounting groove is concavely formed on the first valve seat, the housing is detachably mounted on the first mounting groove, and the upper end of the housing protrudes out of the first mounting groove;

the second valve seat is concavely provided with a second mounting groove, the shell is mounted on the second mounting groove, the shell comprises a first positioning groove and a second positioning groove which are mutually communicated, and the first positioning groove is communicated with the second positioning groove through the second oil inlet hole; the second valve core is arranged in the second positioning groove, and the end part of the second valve core can movably extend into the first positioning groove;

the male connector is in butt joint with the female connector, and the upper end of the shell is inserted into the first positioning groove.

Preferably, the outer periphery of the lower end of the outer shell is in threaded connection with the inner wall of the first mounting groove;

the periphery of the shell is provided with an operation part.

Preferably, the first mounting groove is located the operating portion below still is equipped with the recess, be equipped with the sealing washer in the recess.

Preferably, the inner wall of the outer shell gradually converges towards the first oil inlet to form a first inclined wall surface;

the periphery of the first valve core is provided with a first conical part matched with the first inclined wall surface, the first valve core is positioned at the upper end of the first conical part to form a first contact part, and the first contact part can move along the first oil inlet hole to open or seal the first oil inlet hole.

Preferably, the inner wall of the first positioning groove gradually converges towards the second oil inlet hole to form a second inclined wall surface;

the periphery of the second valve core is provided with a second conical part matched with the second inclined wall surface, the second valve core is positioned at the upper end of the second conical part to form a second contact part, and the second contact part can move along the second oil inlet hole to open or seal the second oil inlet hole.

Preferably, the first valve core is provided with a hollow first inner cavity, a circumferential side wall of the first valve core is provided with a first oil guide hole communicated with the first inner cavity, and the first inner cavity and the first oil guide hole are matched to form the first oil guide channel.

Preferably, the second valve core is provided with a hollow second inner cavity, a second oil guide hole communicated with the second inner cavity is formed in the circumferential side wall of the second valve core, and the second inner cavity and the second oil guide hole are matched to form the second oil guide channel.

Preferably, the first valve seat is also provided with a first connecting pipe connected with the first hydraulic oil channel;

and a second connecting pipe connected with the second hydraulic oil channel is also arranged on the second valve seat.

The implementation of the utility model has the following beneficial effects: this hydraulic pressure quick-operation joint's male joint can the high-speed joint switch on with female joint, and is easy and simple to handle, can be equipped with the several oil circuit simultaneously, compares single oil circuit, and its suitability is better, and simultaneously, male joint and female joint leakproofness under the detached state are better, can avoid the oil leakage oil leak.

The application also constructs a hydraulic quick connector, which comprises a male connector and a female connector which are matched with each other; the male connector comprises a first valve seat, a first one-way valve arranged on the first valve seat and a first hydraulic oil channel arranged on the first valve seat, and the first one-way valve is communicated with the first hydraulic oil channel;

the female joint comprises a second valve seat, a second one-way valve arranged on the second valve seat and a second hydraulic oil channel arranged on the second valve seat, and the second one-way valve is communicated with the second hydraulic oil channel; the second one-way valve comprises a shell arranged on the second valve seat and a second valve core arranged in the shell; a second oil inlet hole is formed in the top of the shell; a second oil guide channel communicated with the second hydraulic oil channel is arranged on the second valve core, a second limiting part extends outwards from the radial side surface of the second valve core, and a second spiral spring is sleeved on the periphery of the second valve core, which is positioned between the second limiting part and the bottom surface of the shell; the top of the second valve core can move along the second oil inlet hole to open or seal the second oil inlet hole;

The implementation of the utility model has the following beneficial effects: the male joint and the female joint of the hydraulic quick joint can be quickly connected and conducted, the operation is simple and convenient, and meanwhile, the male joint and the female joint are good in sealing performance in a separation state, and oil leakage can be avoided.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a hydraulic quick connector according to the present invention;

FIG. 2 is a schematic structural view of the hydraulic quick coupling of the present invention from another perspective;

FIG. 3 is a cross-sectional view of the hydraulic quick connector of FIG. 1;

FIG. 4 is a schematic structural view of a male connector of the present invention;

FIG. 5 is a schematic view of the structure of the female connector of the present invention.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, the hydraulic quick connector of the present invention comprises a male connector 1 and a female connector 2 which are engaged with each other.

In this embodiment, the male connector 1 includes a first valve seat 11, a plurality of first check valves 12 disposed on the first valve seat 11, and a plurality of first hydraulic oil passages 13 disposed on the first valve seat 11, and each first check valve 12 is communicated with each first hydraulic oil passage 13;

the first check valve 12 comprises a housing 121 arranged on the first valve seat 11, and a first valve core 122 arranged in the housing 121, wherein the upper end of the housing 121 protrudes out of the first valve seat 11, and the top of the housing is provided with a first oil inlet 1213; the first check valve 12 includes a first valve core 122, a first oil guiding passage 1221 communicated with the first hydraulic oil passage 13 is provided on the first valve core 122, a first position-limiting portion 1222 extends outward from a radial side surface of the first valve core 122, a first coil spring 14 is sleeved on an outer circumference of the first valve core 122 between the first position-limiting portion 1222 and a bottom surface of the housing 121, and a top portion of the first valve core 122 is movable along a first oil inlet 1213 to open or seal the first oil inlet 1213.

In the present embodiment, the female connector 2 includes a second valve seat 21, a plurality of second check valves 22 provided on the second valve seat 21, and a plurality of second hydraulic passages 23 provided on the second valve seat 21, and each of the second check valves 22 communicates with each of the second hydraulic passages 23.

The second check valve 22 comprises a housing 221 arranged on the second valve seat 21 and a second valve core 222 arranged in the housing 221, and a second oil inlet 2113 is formed in the top of the housing 221; the second valve core 222 is provided with a second oil guide passage 2221 communicated with the second hydraulic oil passage 23, a second limiting portion 2222 extends outwards from the radial side surface of the second valve core 222, a second coil spring 24 is sleeved on the periphery of the second valve core 222 between the second limiting portion 2222 and the bottom surface of the housing 221, and the top of the second valve core 222 can move along the second oil inlet 2113 to open or seal the second oil inlet 2113.

Wherein, the male connector 1 is butted with the female connector 2, and the first one-way valve 12 is communicated with the second one-way valve 22; the male connector 1 is separated from the female connector 2, the first valve spool 122 has its end sealed against the first oil inlet hole 1213 by the first coil spring 14, and the second valve spool 222 has its end sealed against the second oil inlet hole 2113 by the second coil spring 24.

In this embodiment, the first valve seat 11 has a square structure, such as a rectangular parallelepiped structure, a square structure, or a truncated cone structure, and the structural form thereof can be selected according to the requirement, and is not limited specifically here. Preferably, the first valve seat 11 may be made of a metal member, such as stainless steel, however, in some embodiments, the first valve seat 11 may also be made of aluminum and its alloy, or copper, and in some embodiments, the first valve seat 11 may also be made of a non-metal material, which is not limited herein.

Preferably, the first hydraulic oil passage 13 may have a substantially L-shaped structure, and a pipe may be machined in the first valve seat 11, and the end of the pipe may be sealed by a copper bead plugging process. Of course, the structure and size of the first hydraulic passage 13 can be selected according to the requirement, and are not limited specifically here.

Preferably, the first valve seat 11 is concavely provided with a first mounting groove 111, the housing 121 is detachably mounted on the first mounting groove 111, and the upper end of the housing 121 protrudes out of the first mounting groove 111.

Correspondingly, the second valve seat 21 is concavely provided with a second installation groove 2111, the housing 221 is installed in the second installation groove 2111, the housing 221 may include a first positioning groove 2211 and a second positioning groove 2212 which are communicated with each other, the first positioning groove 2211 and the second positioning groove 2212 are communicated through a second oil inlet 2113, the second valve plug 222 is arranged in the second positioning groove 2212, and the end portion thereof can movably extend into the first positioning groove 2211.

Wherein, male joint 1 docks with female joint 2, and first locating slot 2211 is inserted to the upper end of shell 121, can improve the butt joint precision from this, can avoid the condition that oil seepage or oil leak appear when male joint 1 docks with female joint 2 simultaneously and switches on.

In some embodiments, the second valve seat 21 may have a square structure, such as a rectangular parallelepiped structure, a square structure, or a truncated cone structure, and the structural form thereof may be selected according to the requirement, and is not limited herein. Preferably, the second valve seat 21 may be made of a metal member, such as stainless steel, however, in some embodiments, the second valve seat 21 may also be made of aluminum and its alloy, or copper, and in some embodiments, the second valve seat 21 may also be made of a non-metal material, which is not limited herein. Preferably, the second valve seat 21 may include a first seat 211 and a second seat 212 detachably fixed together by a fastener, the first mounting groove 111 may be disposed on the first seat 211, and the second hydraulic oil passage 23 is disposed on the second seat 212.

Preferably, the second hydraulic oil passage 23 may have a substantially L-shaped configuration, and a pipe may be machined into the second valve seat 21, and the end of the pipe may be sealed by a copper bead plugging process. Of course, the structure and size of the second hydraulic oil passage 23 may be selected according to the requirement, and are not particularly limited herein.

In this embodiment, the outer casing 121 is substantially cylindrical, the periphery of the upper end thereof may be provided with a round angle structure, preferably, the periphery of the lower end of the outer casing 121 is connected with the inner wall of the first installation groove 111 through a screw thread, of course, in some embodiments, the outer casing 121 may also be installed in the first installation groove 111 through a snap or a turn, and the installation and fixing manner of the outer casing 121 may be various, and is not limited specifically herein.

Preferably, the outer periphery of the housing 121 is provided with an operating portion 1212, the operating portion 1212 may be a flange structure, the operating portion 1212 may be provided with a slot structure 12121 for rotatably locking the housing 121 after a special tool is inserted, and the slot structure 12121 may be a cross-shaped slot or the like.

Preferably, the first mounting groove 111 is further provided with a groove below the operating portion 1212, and a sealing ring 17 is disposed in the groove to improve the sealing performance and avoid oil leakage.

Preferably, the inner wall of the housing 121 gradually converges toward the first oil inlet hole 1213 to form a first inclined wall 1211, the outer periphery of the first valve body 122 is provided with a first tapered portion 1223 engaged with the first inclined wall 1211, and the first tapered portion 1223 and the first inclined wall 1211 are in inclined contact in the closed state, thereby improving the sealing property.

The first spool 122 forms a first contact portion 1224 at an upper end of the first tapered portion 1223, the first contact portion 1224 being movable along a first oil inlet hole 1213 to open or seal the first oil inlet hole 1213, the first contact portion 1224 being sized similar to the first oil inlet hole 1213.

In this embodiment, the first valve element 122 may be a cylindrical structure, which may be a metal member, such as stainless steel. In this embodiment, a through hole is formed in the bottom wall of the housing 121, and a plurality of grooves with a step structure may be formed at the connection between the first hydraulic oil channel 13 and the housing 121, so that the first valve element 122 has a sufficient accommodating space when moving.

Correspondingly, the inner wall of the first positioning groove 2211 gradually converges toward the second oil inlet 2113 to form a second inclined wall 22121, the outer periphery of the second valve body 222 is provided with a second tapered portion 2223 engaged with the second inclined wall 22121, and the second tapered portion 2223 and the second inclined wall 22121 are in inclined contact with each other in the closed state, so that the sealing performance can be improved.

The second spool 222 forms a second contact portion 2224 at the upper end of the second tapered portion 2223, the second contact portion 2224 is movable along the second oil inlet hole 2113 to open or seal the second oil inlet hole 2113, the second contact portion 2224 seals the second oil inlet hole 2113 by the second coil spring 24, and the second contact portion 2224 has a size similar to that of the second oil inlet hole 2113.

In this embodiment, the second valve core 222 may be a cylindrical structure, which may be a metal member, such as stainless steel. In this embodiment, a through hole is formed in the bottom wall of the housing 221, and a plurality of grooves with a step structure may be formed at the connection portion of the second hydraulic oil passage 23 and the housing 221, so that the second valve core 222 has a sufficient accommodating (yielding) space when moving.

Preferably, the first valve core 122 is provided with a hollow first inner cavity 12211, a circumferential side wall of the first valve core 122 is provided with a first oil guide hole 12212 communicated with the first inner cavity 12211, and the first inner cavity 12211 and the first oil guide hole 12212 cooperate to form a first oil guide passage 1221. Preferably, the first guiding hole 12212 may be provided in one or more, and is not limited in particular.

Preferably, the second valve core 222 is provided with a hollow second inner cavity 22211, a circumferential side wall of the second valve core 222 is provided with a second oil guide hole 22212 communicated with the second inner cavity 22211, the second inner cavity 22211 and the second oil guide hole 22212 cooperate to form a second oil guide passage 2221, and preferably, one or more second oil guide holes 22212 may be provided, which is not particularly limited herein.

Preferably, the first valve seat 11 is also provided with a first connecting pipe 15 connected to the first hydraulic oil passage 13 for connection to an external oil line.

The second valve seat 21 is also provided with a second connection pipe 25 connected to the second hydraulic oil passage 23 to be connected to the external oil line, and preferably, the second valve seat 21 may further be provided with a guide plate 26, the guide plate 26 being provided corresponding to the second connection pipe 25, and may be provided with a socket hole so that the external oil line is inserted therein to be connected to the second connection pipe 25.

Preferably, the first valve seat 11 may also be provided with a resilient conductive contact 16.

In this embodiment, the male connector 1 and the female connector 2 can be quickly connected in a butt-joint manner by a driving mechanism such as a wrench matching with a guide rail, and the first valve core 122 and the second valve core 222 are moved away from each other by an opposite acting force, so that the first oil inlet hole 1213 and the second oil inlet hole 2113 are opened, and hydraulic oil flows from the first hydraulic oil passage 13, the first oil guide passage 1221, the first oil inlet hole 1213, the second oil inlet hole 2113, and the second oil guide passage 2221 to the second hydraulic oil passage 23. When the male connector 1 is separated from the female connector 2, the first valve body 122 seals the first oil inlet hole 1213 by the elastic force of the first coil spring 14, and the second valve body 222 seals the second oil inlet hole 2113 by the elastic force of the second coil spring 24.

This hydraulic pressure quick-operation joint's male joint 1 can the high-speed joint switch on with female joint 2, and is easy and simple to handle, can be equipped with the several oil circuit simultaneously, compares single oil circuit, and its suitability is better, and simultaneously, male joint 1 and female joint 2 leakproofness under the detached state are better, can avoid the oil leakage oil leak.

This application still constructs a hydraulic pressure quick-operation joint, and it includes male joint 1 and female joint 2 of mutually supporting, and male joint 1 includes first disk seat 11, locates first check valve 12 on first disk seat 11, locates first hydraulic oil passageway 13 on first disk seat 11, and first check valve 12 and first hydraulic oil passageway 13 intercommunication.

The female joint 2 comprises a second valve seat 21, a second one-way valve 22 arranged on the second valve seat 21 and a second hydraulic oil passage 23 arranged on the second valve seat 21, and the second one-way valve 22 is communicated with the second hydraulic oil passage 23; the second check valve 22 includes a housing 221 disposed on the second valve seat 21, and a second valve core 222 disposed in the housing 221, a second oil inlet 2113 is disposed at the top of the housing 221, a second oil guiding channel 2221 communicated with the second hydraulic oil channel 23 is disposed on the second valve core 222, a second limiting portion 2222 extends outward from a radial side surface of the second valve core 222, a second coil spring 24 is sleeved on an outer periphery of the second valve core 222 between the second limiting portion 2222 and the bottom surface of the housing 221, and the top of the second valve core 222 can move along the second oil inlet 2113 to open or seal the second oil inlet 2113.

The male connector 1 and the female connector 2 of the hydraulic quick connector can be quickly connected and conducted, the operation is simple and convenient, meanwhile, the male connector 1 and the female connector 2 are good in sealing performance in a separation state, and oil leakage can be avoided.

It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. A hydraulic quick connector is characterized by comprising a male connector (1) and a female connector (2) which are matched with each other; the male connector (1) comprises a first valve seat (11), a plurality of first one-way valves (12) arranged on the first valve seat (11), and a plurality of first hydraulic oil channels (13) arranged on the first valve seat (11), wherein each first one-way valve (12) is communicated with each first hydraulic oil channel (13);

the first one-way valve (12) comprises a shell (121) arranged on the first valve seat (11) and a first valve core (122) arranged in the shell (121); the upper end of the shell (121) protrudes out of the first valve seat (11), and the top of the shell is provided with a first oil inlet hole (1213); the first check valve (12) comprises a first valve core (122), a first oil guide channel (1221) communicated with the first hydraulic oil channel (13) is arranged on the first valve core (122), a first limiting part (1222) extends outwards from the radial side surface of the first valve core (122), and a first spiral spring (14) is sleeved on the periphery of the first valve core (122) between the first limiting part (1222) and the bottom surface of the shell (121); a top of the first spool (122) is movable along the first oil inlet hole (1213) to open or seal the first oil inlet hole (1213);

the female joint (2) comprises a second valve seat (21), a plurality of second one-way valves (22) arranged on the second valve seat (21) and a plurality of second hydraulic oil channels (23) arranged on the second valve seat (21), and each second one-way valve (22) is communicated with each second hydraulic oil channel (23); the second one-way valve (22) comprises a shell (221) arranged on the second valve seat (21) and a second valve core (222) arranged in the shell (221); a second oil inlet hole (2113) is formed in the top of the shell (221); a second oil guide channel (2221) communicated with the second hydraulic oil channel (23) is formed in the second valve core (222), a second limiting part (2222) extends outwards from the radial side surface of the second valve core (222), and a second spiral spring (24) is sleeved on the periphery of the second valve core (222) between the second limiting part (2222) and the bottom surface of the shell (221); the top of the second valve core (222) can move along the second oil inlet hole (2113) to open or seal the second oil inlet hole (2113);

wherein the male connector (1) is butted with the female connector (2), and the first one-way valve (12) is communicated with the second one-way valve (22); the male connector (1) is separated from the female connector (2), the end of the first valve core (122) is sealed with the first oil inlet hole (1213) under the action of the first spiral spring (14), and the end of the second valve core (222) is sealed with the second oil inlet hole (2113) under the action of the second spiral spring (24).

2. The hydraulic quick coupling as claimed in claim 1, wherein a first mounting groove (111) is concavely formed on the first valve seat (11), the housing (121) is detachably mounted on the first mounting groove (111), and the upper end of the housing (121) is arranged to protrude out of the first mounting groove (111);

the second valve seat (21) is concavely provided with a second mounting groove (2111), the shell (221) is mounted on the second mounting groove (2111), the shell (221) comprises a first positioning groove (2211) and a second positioning groove (2212) which are communicated with each other, and the first positioning groove (2211) and the second positioning groove (2212) are communicated through the second oil inlet hole (2113); the second valve core (222) is arranged in the second positioning groove (2212), and the end part of the second valve core can movably extend into the first positioning groove (2211);

the male connector (1) is in butt joint with the female connector (2), and the upper end of the shell (121) is inserted into the first positioning groove (2211).

3. The hydraulic quick coupling as claimed in claim 2, wherein the outer circumference of the lower end of the housing (121) is screw-coupled with the inner wall of the first mounting groove (111);

an operation portion (1212) is provided on the outer periphery of the housing (121).

4. The hydraulic quick coupling as recited in claim 3, characterized in that the first mounting groove (111) is further provided with a groove below the operating portion (1212), and a sealing ring (17) is provided in the groove.

5. The hydraulic quick coupling as claimed in claim 1, wherein the inner wall of the housing (121) gradually converges toward the first oil inlet hole (1213) to form a first inclined wall surface (1211);

the outer circumference of the first valve core (122) is provided with a first tapered portion (1223) engaged with the first inclined wall surface (1211), the first valve core (122) is positioned at the upper end of the first tapered portion (1223) to form a first contact portion (1224), and the first contact portion (1224) is movable along the first oil inlet hole (1213) to open or seal the first oil inlet hole (1213).

6. The hydraulic quick coupling as claimed in claim 2, wherein the inner wall of the first seating groove (2211) is gradually tapered toward the second oil inlet hole (2113) to form a second inclined wall surface (22121);

the outer circumference of the second valve core (222) is provided with a second tapered portion (2223) engaged with the second inclined wall surface (22121), the second valve core (222) is positioned at the upper end of the second tapered portion (2223) to form a second contact portion (2224), and the second contact portion (2224) can move along the second oil inlet hole (2113) to open or seal the second oil inlet hole (2113).

7. The hydraulic quick coupling according to claim 1, wherein the first valve spool (122) is provided with a hollow first inner cavity (12211), a circumferential side wall of the first valve spool (122) is provided with a first oil guide hole (12212) communicating with the first inner cavity (12211), and the first inner cavity (12211) and the first oil guide hole (12212) cooperate to form the first oil guide passage (1221).

8. The hydraulic quick coupling according to claim 1, wherein the second spool (222) is provided with a hollow second internal cavity (22211), a circumferential side wall of the second spool (222) is provided with a second oil guide hole (22212) communicated with the second internal cavity (22211), and the second internal cavity (22211) and the second oil guide hole (22212) cooperate to form the second oil guide passage (2221).

9. Hydraulic quick-coupling according to claim 1, characterised in that the first valve seat (11) is also provided with a first connecting pipe (15) connected to the first hydraulic oil channel (13);

the second valve seat (21) is also provided with a second connecting pipe (25) connected with the second hydraulic oil channel (23).

10. A hydraulic quick connector is characterized by comprising a male connector (1) and a female connector (2) which are matched with each other; the male connector (1) comprises a first valve seat (11), a first one-way valve (12) arranged on the first valve seat (11) and a first hydraulic oil channel (13) arranged on the first valve seat (11), wherein the first one-way valve (12) is communicated with the first hydraulic oil channel (13);

the female joint (2) comprises a second valve seat (21), a second one-way valve (22) arranged on the second valve seat (21) and a second hydraulic oil channel (23) arranged on the second valve seat (21), and the second one-way valve (22) is communicated with the second hydraulic oil channel (23); the second one-way valve (22) comprises a shell (221) arranged on the second valve seat (21) and a second valve core (222) arranged in the shell (221); a second oil inlet hole (2113) is formed in the top of the shell (221); a second oil guide channel (2221) communicated with the second hydraulic oil channel (23) is formed in the second valve core (222), a second limiting part (2222) extends outwards from the radial side surface of the second valve core (222), and a second spiral spring (24) is sleeved on the periphery of the second valve core (222) between the second limiting part (2222) and the bottom surface of the shell (221); the top of the second valve core (222) can move along the second oil inlet hole (2113) to open or seal the second oil inlet hole (2113);