阅读说明：本技术 一种用于油口与软管连接的组合式接头 (Combined joint for connecting oil port and hose ) 是由 王述益 于 2021-11-18 设计创作，主要内容包括：本发明公开了一种用于油口与软管连接的组合式接头,包括：油口连接头、软管连接头、U形销,油口连接头与软管连接头之间使用U形销连接,并形成活塞密封,油口连接头与油口之间采用螺纹连接,并形成活塞密封,安装时通过调整油口连接头上的螺纹转角,避免与软管连接头相连接的软管的扭转,在振动场合应用时,与油口连接螺纹的稍许松动,不会对本发明组合式接头与油口之间的密封性造成影响,解决了现有技术存在的不足。(The invention discloses a combined joint for connecting an oil port and a hose, which comprises: the hydraulic cylinder comprises an oil port connector, a hose connector and a U-shaped pin, wherein the oil port connector is connected with the hose connector through the U-shaped pin to form a piston seal, the oil port connector is in threaded connection with an oil port to form a piston seal, the hose connected with the hose connector is prevented from twisting by adjusting a thread turn angle on the oil port connector during installation, and the thread connected with the oil port is slightly loosened during vibration application, so that the sealing property between the combined connector and the oil port cannot be affected, and the defects in the prior art are overcome.)

1. A combination fitting for connection of an oil port to a hose, comprising: hydraulic fluid port connector, hose connection head, U-shaped round pin, its characterized in that:

the oil port connector comprises an oil port sealing piece and a body; the diameter of the interior of the body along the axis direction is sequentially from small to large, and the interior of the body is provided with a flow passage through hole, a piston sealing step hole and a connecting counter bore which are connected with each other; the outer part of the body is provided with a piston part with a sealing piece groove, an external thread part, an outer hexagonal part for installation and a cylindrical U-shaped pin connecting part in sequence from one side of the flow passage through hole; the sealing piece groove of the piston part is provided with the oil port sealing piece and then forms piston sealing with the sealing hole in the oil port, the thread of the external thread part is matched with the internal thread in the oil port, the cylinder of the U-shaped pin connecting part is provided with two parallel side through holes, the central lines of the through holes at the two sides are vertical to the axis of the connecting counter bore in the body and are symmetrically distributed with the axis, and the through holes at the two sides are matched with the U-shaped pin; the oil port connector is inserted into an oil port on corresponding equipment, the outer hexagonal part is rotated by a wrench, so that an outer threaded part on the oil port connector is connected with an inner thread in the oil port, a piston part on an oil port connector body provided with an oil port sealing piece is pushed to enter an oil port inner sealing hole, a piston seal is formed between the oil port connector and the oil port, and the oil port connector and the oil port are connected together;

the hose connector comprises a connecting sealing piece and a connector body; the inner part of the connector body of the hose connector is provided with a flow passage through hole, the outer part of the connector body is sequentially provided with a piston part with a sealing piece groove, a U-shaped pin connecting part and a hose connecting part, and the piston part and a piston sealing step hole in the body of the oil port connector form piston sealing after the connecting sealing piece is installed in the sealing piece groove; the hose connecting part is used for connecting a hose; the outer part of the connecting part of the U-shaped pin is a cylinder, the outer diameter of the cylinder is in clearance fit with the inner diameter of a connecting counter bore in the oil port connector body, two flat grooves which are symmetrical and parallel to each other are milled on the cylinder, the width of each flat groove is in clearance fit with the thickness of the U-shaped pin, and the distance between the bottom surfaces of the two flat grooves which are parallel to each other is in transition fit with the width of an opening in the U-shaped pin; the hose connector can be inserted into the oil port connector from one end of the connecting counter bore of the oil port connector body, wherein a piston part of a connector body of the hose connector provided with a connecting sealing element is inserted into a piston sealing step hole in the oil port connector body, a U-shaped pin connecting part of the connector body of the hose connector is inserted into the connecting counter bore in the oil port connector body, and after the hose connector is inserted, the central lines of two flat grooves on the U-shaped pin connecting part of the hose connector body and the central lines of two side through holes on the U-shaped pin connecting part of the oil port connector body can be on the same plane;

the U-shaped round pin, for the material preparation that has certain elasticity and hardness, its open end opening size is greater than the opening size of middle department hose connection head follow the connection counter bore end of the body of hydraulic fluid port connector insert hydraulic fluid port connector body after, the U-shaped round pin can pass earlier behind two side through-holes one side on the U-shaped pin connection part of the body of hydraulic fluid port connector, pass again two flat grooves on the U-shaped pin connection part of the connector body of hose connection head, wear out from the opposite side of two side through-holes at last, will the hydraulic fluid port connector with hose connection head links together, and the hydraulic fluid port connector with hose connection head between form piston seal.

Technical Field

The invention relates to the technical field of connection of fluid pipelines, in particular to a combined joint for connecting an oil port and a hose.

Background

In a fluid pipeline system, a connection from an internal threaded oil port on a pump, a valve or equipment to a hose is a very important component of the pipeline system, and the most common method for the connection is as follows: firstly, connecting the transition joint with the oil port, and secondly: buckling and pressing the hose joint and the hose together to form a hose assembly, and connecting the hose assembly with the transition joint;

in the above connection method, two ends of the transition joint are respectively connected with the oil port and the hose connector through threads, and besides the connection function of the threads, the fastening of the threads is also a necessary condition for forming sealing between the transition joint and the oil port and between the transition joint and the hose connector, and two problems are easily caused by the connection, namely: in the installation process, when the transition joint and the hose assembly are installed together, the hose assembly is easy to rotate along with the joint in the final thread screwing stage, so that the hose is twisted, and the service life of the hose is shortened under the high-pressure condition due to the twisting; secondly, the method comprises the following steps: when the pipeline sealing device is applied to high-frequency vibration occasions such as breaking hammers and the like, vibration causes thread loosening, sealing failure is caused, pipelines leak, and the whole pipeline system fails.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the combined joint for connecting the oil port and the hose, the oil port connecting part and the hose connecting part of the combined joint can rotate when being installed, so that the problem of twisting of the hose caused by screwing threads is avoided, meanwhile, the combined joint and the oil port adopt a piston sealing mode, the threads on the combined joint play a connecting role, and when the combined joint is applied to a high-frequency vibration field, even if the threads are slightly loosened due to vibration, the sealing of a pipeline system can still be kept effective, so that the defects of the prior art are avoided.

The technical scheme is as follows:

in order to solve the above problems, the present invention provides the following technical solutions: a combination fitting for connection of an oil port to a hose, comprising: hydraulic fluid port connector, hose connection head, U-shaped round pin, its characterized in that:

the oil port connector comprises an oil port sealing piece and a body; the diameter of the interior of the body along the axis direction is sequentially from small to large, and the interior of the body is provided with a flow passage through hole, a piston sealing step hole and a connecting counter bore which are connected with each other; the outer part of the body is provided with a piston part with a sealing piece groove, an external thread part, an outer hexagonal part for installation and a cylindrical U-shaped pin connecting part in sequence from one side of the flow passage through hole; the sealing piece groove of the piston part is provided with the oil port sealing piece and then forms piston sealing with the sealing hole in the oil port, the thread of the external thread part is matched with the internal thread in the oil port, the cylinder of the U-shaped pin connecting part is provided with two parallel side through holes, the central lines of the through holes at the two sides are vertical to the axis of the connecting counter bore in the body and are symmetrically distributed with the axis, and the through holes at the two sides are matched with the U-shaped pin; the oil port connector is inserted into an oil port on corresponding equipment, the outer hexagonal part is rotated by a wrench, so that an outer threaded part on the oil port connector is connected with an inner thread in the oil port, a piston part on an oil port connector body provided with an oil port sealing piece is pushed to enter an oil port inner sealing hole, a piston seal is formed between the oil port connector and the oil port, and the oil port connector and the oil port are connected together;

the hose connector comprises a connecting sealing piece and a connector body; the inner part of the connector body of the hose connector is provided with a flow passage through hole, the outer part of the connector body is sequentially provided with a piston part with a sealing piece groove, a U-shaped pin connecting part and a hose connecting part, and the piston part and a piston sealing step hole in the body of the oil port connector form piston sealing after the connecting sealing piece is installed in the sealing piece groove; the hose connecting part is used for connecting a hose; the outer part of the connecting part of the U-shaped pin is a cylinder, the outer diameter of the cylinder is in clearance fit with the inner diameter of a connecting counter bore in the oil port connector body, two flat grooves which are symmetrical and parallel to each other are milled on the cylinder, the width of each flat groove is in clearance fit with the thickness of the U-shaped pin, and the distance between the bottom surfaces of the two flat grooves which are parallel to each other is in transition fit with the width of an opening in the U-shaped pin; the hose connector can be inserted into the oil port connector from one end of the connecting counter bore of the oil port connector body, wherein a piston part of a connector body of the hose connector provided with a connecting sealing element is inserted into a piston sealing step hole in the oil port connector body, a U-shaped pin connecting part of the connector body of the hose connector is inserted into the connecting counter bore in the oil port connector body, and after the hose connector is inserted, the central lines of two flat grooves on the U-shaped pin connecting part of the hose connector body and the central lines of two side through holes on the U-shaped pin connecting part of the oil port connector body can be on the same plane;

the U-shaped pin is made of a material with certain elasticity and hardness, the opening size of the opening end of the U-shaped pin is larger than that of the middle part of the U-shaped pin, after the hose connector is inserted into the oil port connector body from the connection counter bore end of the oil port connector body, the U-shaped pin can firstly penetrate through one side of two side through holes on the U-shaped pin connection part of the oil port connector body, then penetrate through two flat grooves on the U-shaped pin connection part of the connector body of the hose connector, and finally penetrate out from the other side of the two side through holes to connect the oil port connector and the hose connector together, and form piston sealing between the oil port connector and the hose connector; because the opening size of the opening end of the U-shaped pin is larger than that of the middle part, the U-shaped pin can not fall off in the using process.

(III) advantageous effects

Compared with the prior art, the invention has the beneficial effects that: the combined joint for connecting the oil port and the hose comprises the oil port connector and the hose connector, which are mutually sealed by pistons and connected through a U-shaped pin, and meanwhile, the seal between the hose connector and the oil port is also sealed by the pistons and is connected by threads, so that when the threads are loosened, the piston seal cannot be influenced, the problem of sealing failure caused by loosening of the threads in the prior art is solved, and meanwhile, the problem of twisting of the hose during installation is effectively solved due to the rotatable performance of the threads connected with the oil port.

Drawings

FIG. 1 is a schematic view of an oil port connector in the combined joint of the present invention;

FIG. 2 is a schematic view of a hose connector in the modular connector of the present invention;

FIG. 3 is a schematic view of a U-shaped pin in the modular joint of the present invention;

FIG. 4 is a schematic assembled view of a modular fitting of the present invention for connecting an oil port to a hose;

FIG. 5 is a schematic view of an oil port used in the modular joint of the present invention;

FIG. 6 is a schematic view of the assembled coupling of the present invention connected to a hose and connected to an oil port;

FIG. 7 is a schematic cross-sectional view of a hose connector of the modular connector of the present invention at the location of a flat groove in the connector body;

the reference numerals are explained below:

1 oil port connector, 2 hose connector, 3U-shaped pin, 4 oil ports, 5 hose sleeve and 6 hose

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will further describe the present invention with reference to the following detailed description;

referring to a schematic diagram of an oil port connector 1 in fig. 1, 11 is an oil port sealing piece, 12 is a body of the oil port connector, 121 is a flow passage through hole, 122 is a piston sealing stepped hole, 123 is a connecting counter bore, 124 is a piston part, 125 is an external thread part, 126 is an external hexagonal part, 1261 is an end surface of the external hexagonal part 126 adjacent to the external thread part of 125, 127 is a U-shaped pin connecting part, and 1271 is two side through holes;

fig. 2 is a schematic view of the hose connector 2, wherein 21 is a connecting seal member, 22 is a connector body, 221 is a runner through hole, 222 is a piston portion, 223 is a U-shaped pin connecting portion, 2231 is two flat grooves on the U-shaped pin connecting portion 223, and 224 is a hose connecting portion;

FIG. 3 is a schematic view of the U-shaped pin 3 of the present invention with the opening of the U-shaped pin flared outwardly;

FIG. 4 is a schematic assembled view of a modular fitting of the present invention for connecting an oil port to a hose;

fig. 5 is a schematic view of an oil port of the combined joint of the present invention, wherein 41 is an internal sealing hole of the oil port, 42 is an internal thread inside the oil port, and 43 is a plane of the oil port;

FIG. 6 is a schematic view of the modular adapter of the present invention after being connected to a hose and connected to an oil port;

FIG. 7 is a sectional view of the hose connector 2 of the modular connector of the present invention showing the location of the flat groove 2231 in the U-shaped pin connecting portion 223 of the connector body 22.

The specific working principle is as follows:

the invention discloses a combined joint for connecting an oil port and a hose, which is practically applied and installed by the following steps:

firstly, drawing out a U-shaped pin 3 in the combined joint in the figure 4 from a joint, and decomposing the combined joint into an oil port connector 1 (see figure 1), a hose connector 2 (see figure 2) and the U-shaped pin 3 (see figure 3);

the hose connector 2 is buckled with the hose 6 through the hose sleeve 5 (see figure 6);

screwing the oil port connector 1 into the oil port 4 until the end face 1261 on the oil port connector 1 is attached to the oil port plane 43 (see the attached figure 6);

the hose connector 2 is inserted into the oil port connector 1, the oil port connector 1 is rotated within a circle, the U-shaped pin 3 is inserted after the side through hole 1271 on the oil port connector 2 is aligned with the flat groove 2231 on the hose connector 2, and the whole assembly is completed, so that the twisting of the hose is avoided (see the attached drawing 6).

After the assembly shown in fig. 6 is completed, a piston seal is formed between the combined type connector and the oil port 4, a piston seal is also formed between the oil port connector 1 and the hose connector 2, the two flat grooves 2231 on the hose connector 2 limit the mutual rotation between the oil port connector 1 and the hose connector 2 through the connection of the U-shaped pin 3.

When the assembly of fig. 6 is completed and applied to the vibration occasion, the vibration itself may cause the external thread 125 on the oil port connector 1 to have a loose tendency, and the elasticity of the hose 6 itself may overcome the looseness, and the piston sealing effect between the sealing holes 41 of the oil port connector 1 and the oil port 4 may not be influenced by the slight looseness of the external thread 125.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiments should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various improvements and modifications can be made without departing from the spirit and scope of the invention, and these improvements and modifications should also be construed as within the scope of the invention.