CN213809375U

CN213809375U - Hinged hose combined joint

Info

Publication number: CN213809375U
Application number: CN202022851992.2U
Authority: CN
Inventors: 张唯; 刘晓芳; 孙爱民; 张义春; 郭方皓
Original assignee: Xuzhou XCMG Hydraulics Co Ltd
Current assignee: Xuzhou XCMG Hydraulics Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-27
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses an articulated formula hose combination connects. The joint core mounting hole is sleeved on the hinged bolt; an elastic sealing ring is arranged between the lower plane of the hinged bolt cap body and the front end of the joint core, an O-shaped ring is arranged between a cylindrical table below the hinged bolt cap body and the inner wall of the joint core mounting hole, and a sealing gasket is assembled at the lower thread end of the hinged bolt; an oil duct is formed in the axis of the lower portion of the hinged bolt, and an inclined through hole which is communicated with the oil duct in the axis of the hinged bolt and the interior of the mounting hole in the front end of the joint core is formed in the middle of the hinged bolt; the axis of the joint core is provided with an oil duct communicated with a mounting hole at the front end of the joint core, and the joint core is externally provided with a jacket in a matching way. The utility model discloses an integral type hose withhold technology, the sealed double containment of combined seal circle and O type circle connects, and the hose assembly of being convenient for is connected with the host computer disk seat, and the assembly angle is adjustable wantonly, and the space is unrestricted, and sealing reliability is high, is applicable to the occasion of space special requirement.

Description

Hinged hose combined joint

Technical Field

The utility model relates to a coupling specifically is an articulated formula hose combination connects.

Background

At present, most of the common hinged joint cores of engineering machinery are formed by directly inserting a hinged bolt into a joint with a head in an inner cross hollow structure and a spherical outer part, and milling the upper end and the lower end of the joint to be flat, and meanwhile, during installation, the connection bolt, the joint core and an oil port are sealed by a combined gasket which is internally and externally attached with a metal outer ring, and the combined gasket is compressed to achieve a sealing effect; however, in the use process, because the hardness of the combined pad is relatively high, the deformation amount is small during pressing, although the service life of the sealing element is prolonged, the sealing effect is not ideal, and oil is easy to seep. And the processing technology of the ball head structure is complex, the space is large during installation, and the assembly is not easy.

The Chinese patent discloses an articulated joint (CN 205504284U), including articulated bolt, casing, O type circle, passageway and groove, the passageway includes drain pan, crosses liquid passageway and side direction passageway, and the groove includes ring channel and total seal groove, crosses liquid passageway and side direction passageway and all sets up on articulated bolt, and the drain pan sets up on the casing, and on the casing emboliaed articulated bolt, total seal groove was located between the contact surface of articulated bolt and casing bottom. The O-shaped ring and the hard seal are adopted on the upper portion of the bolt and the upper portion of the shell, the shell is of a linear structure, and the O-shaped ring and the hard seal are suitable for metric and British straight threads of different specifications and wide in application range.

The defects of the technology are as follows:

1. only used for connecting a joint, but not directly connected by a hose;

2. the adopted hard sealing of the two O-shaped rings has low sealing performance; the sealing effect at the oil port is not ideal;

3. the hinge bolt adopts a standard vertical cross hole, so that the capacity is small; the liquid outlet channel is positioned in the shell, and can be communicated with the oil liquid of the hydraulic system only by installing the joint body, the application range of the articulated joint is limited, the cost is high, and only the hard connection of the joint at the oil port is used

4. A rectangular main sealing groove is adopted at the position where the bottom of the shell is connected with a workpiece, and due to the fact that requirements on form and position tolerance and surface roughness are high, clamping is inconvenient, certain difficulty is brought to the aspect of a machining process, and the machining quality has great influence on the sealing effect of a sealing surface.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an articulated formula hose combination connects.

The utility model discloses a following technical scheme realizes: an articulated hose combination joint comprises an articulated bolt and a joint core; the front end of the joint core is provided with a mounting hole, and the joint core mounting hole is sleeved on the hinged bolt; an elastic sealing ring is arranged between the lower plane of the hinged bolt cap body and the front end of the joint core, an O-shaped ring is arranged between a cylindrical table below the hinged bolt cap body and the inner wall of the joint core mounting hole, and a sealing gasket is assembled at the lower thread end of the hinged bolt; an oil duct is formed in the axis of the lower portion of the hinged bolt, and an inclined through hole which is communicated with the oil duct in the axis of the hinged bolt and the interior of the mounting hole in the front end of the joint core is formed in the middle of the hinged bolt; the joint core axis is provided with an oil duct communicated with a mounting hole at the front end of the joint core, and the joint core is externally provided with a jacket in a matching way.

It further comprises the following steps: the lower plane of the hinged bolt cap body is provided with an annular sinking groove, and the elastic sealing ring is arranged in the annular sinking groove.

The elastic sealing ring is an ED elastic sealing ring.

Rectangular ring grooves are formed in a cylindrical table below the hinged bolt cap body, and the O-shaped rings are installed in the rectangular ring grooves.

The O-shaped ring is made of a butadiene-acrylonitrile rubber material or a fluororubber FPM material.

The gasket is a KDS combined gasket of DIN3852 standard.

A circumferential sinking groove is formed below the hinged bolt cylindrical table, and the circumferential sinking groove and the lower threaded end of the hinged bolt are conical surfaces; the outer opening of the inclined through hole is positioned on the conical surface.

The number of the inclined through holes is multiple, and the included angle between each inclined through hole and the axis of the hinged bolt is 45 degrees; the inclined through holes are staggered by 120 degrees around the axis of the hinged bolt.

The front end of the joint core is of a structure combining a square shape and a semi-arc shape, and a T-shaped hollow structure is formed by the joint core mounting hole and the oil duct; the middle part of the joint core is provided with a fixed buckling front platform matched with the outer sleeve, the back of the fixed buckling front platform is provided with an inclined trapezoidal buckling groove with the angle of 10 degrees, and the tail part of the joint core is externally provided with an anti-pulling barb.

Narrow trapezoidal buckling and pressing teeth are arranged in the outer sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the shape of the head of the joint core is a structure combining square and semi-arc, the processing technology is simple, the occupied space is small during assembly, and the joint core is applied to a main machine hydraulic system with a small structure,

2. the hinged bolt and the joint core are sealed by an ED elastic sealing ring, and the ED sealing groove is arranged on the bolt, so that the processing is convenient, meanwhile, the defect of poor sealing effect caused by abrasion of an O-shaped ring in the using process is compensated, and the current situations that the hardness of a combined gasket which is internally and externally attached with a metal outer ring is higher, the deformation amount is small during compression and the sealing property is poor are changed;

3. can be directly buckled and pressed with a rubber pipe to form an assembly to form an oil delivery channel.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic view of a hinged bolt arrangement;

FIG. 3 is a schematic view of the jacket construction;

FIG. 4 is a schematic view of a joint core construction;

FIG. 5 is a top view of FIG. 4;

in the figure: 1. a joint core; 1-1, fixedly buckling a foreground; 1-2, inclining by 10 degrees, and buckling and pressing a groove in a trapezoid shape; 1-3, preventing pulling out and removing barbs; 2. a hinged bolt; 2-1, annular sinking groove; 2-2, rectangular ring grooves; 2-3, oblique through holes; 3. a jacket; 3-1, buckling and pressing teeth in a narrow trapezoid shape; 4. an elastic sealing ring; 5. an O-shaped ring; 6. and a gasket.

Detailed Description

The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 5, an articulated hose assembly joint includes an articulated bolt 2 and a joint core 1; the front end of the joint core 1 is provided with a mounting hole, and the mounting hole of the joint core 1 is sleeved on the hinged bolt 2.

The lower plane of the cap body of the hinged bolt 2 is provided with an annular sinking groove 2-1, and the elastic sealing ring 4 is arranged in the annular sinking groove 2-1. The elastic sealing ring 4 is an ED elastic sealing ring and is used for sealing the lower plane of the cap body of the hinged bolt 2 and the upper plane of the front end of the joint core 1 and forming first sealing with the joint core. A rectangular ring groove 2-2 is formed in a cylindrical table below the cap body of the hinged bolt 2, and an O-shaped ring 5 is installed in the rectangular ring groove 2-2. The O-shaped ring 5 is made of nitrile rubber or fluororubber FPM and is used for sealing the inner wall of the mounting hole of the joint core 1 and the cylindrical table below the cap body of the hinged bolt 2 to form a second seal with the joint core. The lower threaded end of the hinged bolt 2 is provided with a sealing gasket 6, and the sealing gasket 6 adopts a KDS combined sealing gasket of DIN3852 standard.

The axis of the lower part of the hinged bolt 2 is provided with an oil duct, and the middle part of the hinged bolt 2 is provided with a plurality of oblique through holes 2-3 at one side for communicating the oil duct of the axis of the hinged bolt 2. The included angle between the inclined through hole 2-3 and the axis of the hinged bolt 2 is 45 degrees; the plurality of inclined through holes 2-3 are staggered by 120 degrees around the axis of the hinged bolt 2. A circumferential sinking groove is formed below the cylindrical table of the hinged bolt 2, and the circumferential sinking groove and the lower threaded end of the hinged bolt 2 are conical surfaces; the outer opening of the inclined through hole 2-3 is positioned on the conical surface. The outer openings of the inclined through holes 2-3 are communicated with the inside of the mounting hole at the front end of the connector core 1. The structure of the intersecting angled through-holes 2-3 minimizes flow losses.

The axle center of the joint core 1 is provided with an oil duct communicated with a mounting hole at the front end of the joint core 1, and the mounting hole of the joint core 1 and the oil duct form a T-shaped hollow structure. The front end of the joint core 1 adopts a structure combining square and semi-circular arc shapes, the middle part of the joint core 1 is provided with a fixed buckling front stage 1-1 matched with the outer sleeve 3, a trapezoidal buckling groove 1-2 with an inclination angle of 10 degrees is arranged behind the fixed buckling front stage 1-1, and the tail part of the joint core 1 is provided with an anti-pulling barb 1-3.

The outer sleeve 3 is internally provided with narrow trapezoidal buckling and pressing teeth 3-1. The outer sleeve 3 and the joint core 1 are of an integrated buckling structure, the joint core 1 and the outer sleeve 3 are firstly buckled into a whole through a pre-buckling mould during implementation, then a rubber pipe is installed and buckled with the joint core together to form an assembly, and then the joint core is connected with the oil port through the hinged bolt 2.

The embodiment solves the problem of direction adjustment in the assembling process, reduces the defects of oil leakage and pressure loss at the sealing part, is convenient to assemble, and can adjust the angle required by assembly at will; the structure is compact, and the applicable space is narrow; the double-channel sealing ensures high temperature, high pressure and high reliability of sealing. The integrated hose buckling process is adopted, the double-sealing joint sealed by the sealing ring and the O-shaped ring is combined, the hose assembly is conveniently connected with the main machine valve seat, the assembly angle is randomly adjustable, the space is not limited, the sealing reliability is high, and the hose buckling assembly is suitable for occasions with special space requirements.

Claims

1. An articulated hose combination joint comprises an articulated bolt (2) and a joint core (1); the front end of the joint core (1) is provided with a mounting hole, and the mounting hole of the joint core (1) is sleeved on the hinged bolt (2);

the method is characterized in that:

an elastic sealing ring (4) is arranged between the lower plane of the cap body of the hinged bolt (2) and the front end of the joint core (1), an O-shaped ring (5) is arranged between a cylindrical table below the cap body of the hinged bolt (2) and the inner wall of a mounting hole of the joint core (1), and a sealing gasket (6) is assembled at the lower thread end of the hinged bolt (2);

an oil duct is arranged at the axle center of the lower part of the hinged bolt (2), and an inclined through hole (2-3) for communicating the oil duct of the axle center of the hinged bolt (2) with the inside of the mounting hole at the front end of the joint core (1) is arranged in the middle of the hinged bolt (2);

the axial center of the joint core (1) is provided with an oil duct communicated with a mounting hole at the front end of the joint core (1), and the joint core (1) is externally provided with an outer sleeve (3) in a matching way.

2. An articulating hose coupling according to claim 1, wherein: an annular sinking groove (2-1) is formed in the lower plane of the cap body of the hinged bolt (2), and the elastic sealing ring (4) is installed in the annular sinking groove (2-1).

3. An articulated hose coupling according to claim 1 or 2, wherein: and the elastic sealing ring (4) is an ED elastic sealing ring.

4. An articulating hose coupling according to claim 1, wherein: rectangular ring grooves (2-2) are formed in a cylindrical table below the hinged bolt (2) and the cap body, and the O-shaped ring (5) is installed in the rectangular ring grooves (2-2).

5. An articulated hose coupling according to claim 1 or 4, wherein: the O-shaped ring (5) is made of a butadiene-acrylonitrile rubber material or a fluororubber FPM material.

6. An articulating hose coupling according to claim 1, wherein: the sealing gasket (6) adopts a KDS combined sealing gasket of DIN3852 standard.

7. An articulating hose coupling according to claim 1, wherein: a circumferential sinking groove is formed below the cylindrical table of the hinged bolt (2), and the circumferential sinking groove is a conical surface from the lower threaded end of the hinged bolt (2); the outer opening of the inclined through hole (2-3) is positioned on the conical surface.

8. An articulated hose coupling according to claim 1 or 7, wherein: the number of the inclined through holes (2-3) is multiple, and the included angle between the inclined through holes (2-3) and the axis of the hinged bolt (2) is 45 degrees; the plurality of inclined through holes (2-3) are staggered by 120 degrees around the axis of the hinged bolt (2).

9. An articulating hose coupling according to claim 1, wherein: the front end of the joint core (1) adopts a structure combining square and semi-arc shapes, and a T-shaped hollow structure is formed by the mounting hole of the joint core (1) and the oil duct; the middle part of the joint core (1) is provided with a fixed buckling front platform (1-1) matched with the outer sleeve (3), a trapezoidal buckling groove (1-2) with an angle of 10 degrees is formed behind the fixed buckling front platform (1-1), and an anti-pulling barb (1-3) is arranged outside the tail part of the joint core (1).

10. An articulating hose coupling according to claim 9, wherein: the outer sleeve (3) is internally provided with narrow trapezoidal buckling and pressing teeth (3-1).