Hydraulic hose capable of preventing joint leakage

Abstract

The hydraulic hose comprises a hose connector, a sealing ring, a hard pipe, a hose body and a fastening pipe, an annular protruding block is arranged on the circumferential inner wall of the hose connector, an arc-shaped elastic pressing plate and the hard pipe are arranged on the outer wall of one side of the annular protruding block, the hard pipe is located on the inner side of the arc-shaped elastic pressing plate, and the sealing ring is arranged on the outer wall of the other side of the annular protruding block. The number of the arc-shaped elastic pressing plates is nine, the nine arc-shaped elastic pressing plates are distributed in an annular array mode, arc-shaped pressing blocks are installed on the inner side walls of the arc-shaped elastic pressing plates, the hard pipe is installed in one end of the hose body, and the hose body is located between the arc-shaped elastic pressing plates and the hard pipe. A fastening pipe is arranged between the outer side wall of the arc-shaped elastic pressing plate and the circumferential inner wall of the hose connector. According to the hose, leakage at the joint of the hose connector and the hose body can be effectively prevented, a worker can conveniently disassemble and assemble the hose body and the hose connector, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic hose joints, in particular to a hydraulic hose with anti-joint leakage. Background Art

[0002] The hydraulic hose joint structure is a connection structure used for the connection and installation of hydraulic hoses, usually including three parts: a joint core, a sleeve and a nut. The nut is generally movably buckled on one end of the joint core, and after the joint is connected to the hydraulic hose, the nut serves as an installation connection part for connecting with other ends or hoses that need to be connected; the sleeve is integrally mounted on the joint core, and a buckling clamping area for clamping the hose is formed between the sleeve and the joint core. The sleeve is deformed by buckling and clamping to clamp the hose in the buckling clamping area, thereby realizing an effective connection between the joint core and the hydraulic hose.

[0003] After searching, the patent announcement number CN217927698U discloses an anti-falling SAE flange hydraulic hose connector with good sealing performance, including a connector body, a sleeve, a movable tube and a hose. The connector body is tubular as a whole, and the outer wall of the end of the connector body is provided with evenly distributed annular grooves. The sleeve is sleeved on the end of the connector body, and a fixing ring is fixedly provided on the inner wall of the sleeve. An elastic strip is fixedly connected to the fixing ring. The elastic strip is provided with evenly distributed protrusions on the side close to the connector body. The hose is inserted between the elastic strip and the connector body, and a tubular extrusion part is provided at the front end of the movable tube. The elastic strip is pressed by the extrusion part. The hydraulic hose connector can be connected to the oil outlet of the cylinder through the SAE flange, and the sealing effect between the connector body and the hose is high, the connection strength is high, the overall stability is good, and the device is easy to use.

[0004] When the above technical solution is actually used, the elastic strip is squeezed only by the squeezing part on the movable tube so that the protrusion on the elastic strip presses the hose onto the connector body. The connection strength between the hose and the elastic strip is poor. After a period of use, the hose itself is deformed, and the hose and the elastic strip are prone to loosening. When the hose and the elastic strip are loose, it will cause leakage at the connection between the connector body and the hose. Therefore, a hydraulic hose that prevents joint leakage is designed. Utility Model Content

[0005] In view of the defects or shortcomings of hydraulic hoses with anti-joint leakage, the purpose of the present invention is to provide a hydraulic hose with anti-joint leakage, which can not only effectively prevent leakage at the connection between the hose joint and the hose body, but also facilitate the staff to perform disassembly and assembly operations between the hose body and the hose joint.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The utility model provides a hydraulic hose for preventing joint leakage, comprising a hose joint, a sealing ring, a hard tube, a hose body and a fastening tube. An annular protrusion is provided on the circumferential inner wall of the hose joint, an arc-shaped elastic pressure plate and a hard tube are provided on the outer wall of one side of the annular protrusion, the hard tube is located on the inner side of the arc-shaped elastic pressure plate, there are nine arc-shaped elastic pressure plates, and the nine arc-shaped elastic pressure plates are distributed in an annular array, an arc-shaped pressure block is installed on the inner side wall of the arc-shaped elastic pressure plate, and the hard tube is located on the inner side of the arc-shaped elastic pressure plate. The quality pipe is installed inside one end of the hose body, and the hose body is located between the arc-shaped elastic pressure plate and the hard pipe, a fastening pipe is provided between the outer side wall of the arc-shaped elastic pressure plate and the circumferential inner wall of the hose joint, an annular sealing block is installed on the end wall of one end of the hard pipe, the other end of the annular sealing block is installed in the annular sealing groove, and the annular sealing groove is opened on one side outer wall of the annular protrusion, and a sealing ring is provided between the end wall of the other end of the annular sealing block and the inner wall of the inner end of the annular sealing groove.

[0008] Preferably, a truncated cone portion is provided on the end wall of the other end of the hard tube, and the circumferential outer wall of one end of the hard tube is overfitted with the circumferential inner wall of the hose body.

[0009] Preferably, an annular end cover is installed on the end wall of one end of the fastening tube, and a truncated cone-shaped inclined portion is provided on the circumferential inner wall of one end of the fastening tube.

[0010] Preferably, an external thread is provided on the outer wall of the arc-shaped elastic pressure plate, and an internal thread is provided on the circumferential inner wall of the fastening tube. The internal thread on the inner wall of the fastening tube and the external thread on the outer wall of the arc-shaped elastic pressure plate are threadedly connected.

[0011] Preferably, an internal thread is provided on the circumferential inner wall of one end of the hose connector, and an external thread is provided on the circumferential outer wall of the fastening tube close to the annular end cover, and the external thread on the circumferential outer wall of the fastening tube and the internal thread on the circumferential inner wall of the hose connector are threadedly engaged.

[0012] Preferably, the other end of the arc-shaped pressing block is located in an annular groove, and the annular groove is provided on the circumferential outer wall of the hard tube.

[0013] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0014] 1. In the present invention, through the coordinated arrangement of a series of structures, when the staff performs the connection operation between the hose body and the hose connector, the staff first installs the sealing ring into the annular sealing groove, then inserts the truncated cone portion on the hard tube into one end of the hose body and makes the annular groove area on the hard tube move into the hose body, then the staff installs the annular sealing block on the hard tube into the annular sealing groove and makes the annular sealing block press against the sealing ring, then the staff inserts one end of the fastening tube into the hose connector, and one end of the fastening tube is located between the arc-shaped elastic pressure plate and the circumferential inner wall of one end of the hose connector. When the truncated cone-shaped inclined portion on the fastening tube is inserted into the hose connector, the truncated cone-shaped inclined portion can squeeze the arc-shaped elastic pressure plate. When the arc-shaped elastic pressure plate is squeezed and deformed, the arc-shaped pressure block will squeeze the circumferential outer wall of the hose body, and squeeze the circumferential outer wall of the hose body into the annular groove. When the truncated cone-shaped inclined portion is completely located inside the hose connector, the staff rotates the fastening tube and installs the fastening tube into the hose connector, and the annular end cover is located on the end wall of one end of the hose connector, thus completing the installation between the hose body and the hose connector. When disassembling the hose connector and the hose body, the staff only needs to rotate the annular end cover and remove the fastening tube from the hose connector, and then the staff can directly disassemble the hose body and the hose connector. Therefore, the utility model is convenient for the staff to perform disassembly and assembly operations between the hose body and the hose connector.

[0015] 2. In the present invention, through the coordinated arrangement of a series of structures, when the truncated cone-shaped inclined portion can squeeze the arc-shaped elastic pressure plate, the arc-shaped elastic pressure plate will be deformed after being squeezed, which will cause the arc-shaped pressure block to squeeze the circumferential outer wall of the hose body and squeeze the circumferential outer wall of the hose body into the annular groove, thereby increasing the connectivity between the hose body and the hose connector, and avoiding the loosening of the hose body and the hose connector due to the deformation of the hose body after a period of use, thereby effectively avoiding the loosening of the connection between the hose connector and the hose body, which may cause leakage at the connection between the hose connector and the hose body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] Figure 1 It is a schematic diagram of the overall split structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 3It is a cross-sectional view of the entire utility model.

[0020] Figure 4 It is a cross-sectional view of the hose connector of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the annular protrusion of the utility model.

[0022] Figure 6 It is a structural schematic diagram of the utility model after the arc-shaped elastic pressing plate is squeezed by the truncated cone-shaped inclined portion.

[0023] Figure 7 It is a cross-sectional view of the fastening pipe of the utility model.

[0024] Figure 8 It is a structural diagram of the hard pipe of the utility model.

[0025] In the picture:

[0026] 100, hose connector; 110, annular protrusion; 111, annular sealing groove; 112, arc-shaped elastic pressure plate; 113, arc-shaped pressure block;

[0027] 200, sealing ring;

[0028] 300, hard tube; 310, annular sealing block; 320, annular groove; 330, truncated cone portion;

[0029] 400. Hose body;

[0030] 500, fastening tube; 510, annular end cap; 520, truncated cone-shaped inclined portion. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] like Figure 1-8As shown, a hydraulic hose for preventing joint leakage includes a hose connector 100, a sealing ring 200, a hard tube 300, a hose body 400 and a fastening tube 500. An annular protrusion 110 is provided on the circumferential inner wall of the hose connector 100, and an arc-shaped elastic pressure plate 112 and a hard tube 300 are provided on the outer wall of one side of the annular protrusion 110. The hard tube 300 is located on the inner side of the arc-shaped elastic pressure plate 112. There are nine arc-shaped elastic pressure plates 112, and the nine arc-shaped elastic pressure plates 112 are distributed in an annular array. After being squeezed by the truncated cone-shaped inclined portion 520 on the fastening tube 500, the nine arc-shaped elastic pressure plates 112 will form a cylindrical shape, and the arc-shaped pressure block 113 on the arc-shaped elastic pressure plate 112 will form a circular ring, which effectively increases the connectivity between the hose body 400 and the hose connector 100. The inner wall of the arc-shaped elastic pressure plate 112 is installed There is an arc-shaped pressure block 113, the hard tube 300 is installed inside one end of the hose body 400, and the hose body 400 is located between the arc-shaped elastic pressure plate 112 and the hard tube 300, and a fastening tube 500 is provided between the outer wall of the arc-shaped elastic pressure plate 112 and the circumferential inner wall of the hose connector 100, and an annular sealing block 310 is installed on the end wall of one end of the hard tube 300, and the other end of the annular sealing block 310 is installed in the annular sealing groove 111, and the annular sealing groove 111 is opened on one side outer wall of the annular protrusion 110, and a sealing ring 200 is provided between the end wall of the other end of the annular sealing block 310 and the inner wall of the inner end of the annular sealing groove 111. The coordinated arrangement of the annular protrusion 110, the annular sealing groove 111, the sealing ring 200 and other structures can seal the connection between the hard tube 300 and the annular protrusion 110.

[0035] A frustum portion 330 is provided on the end wall of the other end of the hard tube 300. The circumferential outer wall of one end of the hard tube 300 and the circumferential inner wall of the hose body 400 are transitionally fitted. The setting of the frustum portion 330 makes it convenient for the staff to insert one end of the hard tube 300 into the hose body 400.

[0036] An annular end cap 510 is installed on the end wall of one end of the fastening tube 500, and a truncated cone-shaped inclined portion 520 is provided on the circumferential inner wall of one end of the fastening tube 500. The truncated cone-shaped inclined portion 520 will exert a certain squeezing force on the arc-shaped elastic pressure plate 112 when the truncated cone-shaped inclined portion 520 moves into the hose connector 100.

[0037] An external thread is provided on the outer wall of the arc-shaped elastic pressure plate 112, and an internal thread is provided on the circumferential inner wall of the fastening tube 500. The internal thread on the inner wall of the fastening tube 500 and the external thread on the outer wall of the arc-shaped elastic pressure plate 112 are threadedly connected.

[0038] An internal thread is provided on the circumferential inner wall of one end of the hose connector 100, and an external thread is provided on the circumferential outer wall of the fastening tube 500 near the annular end cover 510. The external thread on the circumferential outer wall of the fastening tube 500 and the internal thread on the circumferential inner wall of the hose connector 100 are threadedly engaged with each other. Because the internal thread on the inner wall of the fastening tube 500 and the external thread on the outer side wall of the arc-shaped elastic pressure plate 112 are threadedly matched with each other, the external thread on the circumferential outer wall of the fastening tube 500 and the internal thread on the circumferential inner wall of the hose connector 100 are threadedly engaged with each other, which makes it easy for the staff to disassemble and assemble the fastening tube 500.

[0039] The other end of the arc-shaped pressing block 113 is located in the annular groove 320 , and the annular groove 320 is formed on the circumferential outer wall of the hard tube 300 .

[0040] Working principle: When the staff is connecting the hose body 400 and the hose connector 100, the staff first installs the sealing ring 200 into the annular sealing groove 111, then inserts the truncated cone 330 on the hard tube 300 into one end of the hose body 400 and moves the annular groove 320 area on the hard tube 300 into the hose body 400, then the staff installs the annular sealing block 310 on the hard tube 300 into the annular sealing groove 111 and makes the annular sealing block 310 press against the sealing ring 200, and then the staff tightens the tube 500. One end is inserted into the hose connector 100, and one end of the fastening tube 500 is located between the arc-shaped elastic pressure plate 112 and the circumferential inner wall of one end of the hose connector 100. When the truncated cone-shaped inclined portion 520 on the fastening tube 500 is inserted into the hose connector 100, the truncated cone-shaped inclined portion 520 can squeeze the arc-shaped elastic pressure plate 112. After the arc-shaped elastic pressure plate 112 is squeezed and deformed, the arc-shaped pressure block 113 will squeeze the circumferential outer wall of the hose body 400 and squeeze the circumferential outer wall of the hose body 400 into the annular groove 320, thereby increasing the connection between the hose body 400 and the hose connector. The connection between the hose body 400 and the hose connector 100 is good, which avoids the loosening of the hose body 400 and the hose connector 100 due to the deformation of the hose body 400 after a period of use, thereby effectively avoiding the loosening of the connection between the hose connector 100 and the hose body 400 and the leakage of the connection between the hose connector 100 and the hose body 400. When the truncated cone-shaped inclined portion 520 is completely located inside the hose connector 100, the staff rotates the fastening tube 500 and tightens the fastening tube 500. 00 is installed in the hose connector 100, and the annular end cover 510 is located on the end wall of one end of the hose connector 100, so the installation between the hose body 400 and the hose connector 100 is completed. When disassembling the hose connector 100 and the hose body 400, the staff only needs to rotate the annular end cover 510 and remove the fastening tube 500 from the hose connector 100. The staff can then directly disassemble the hose body 400 and the hose connector 100, so that the utility model is convenient for the staff to perform disassembly and assembly operations between the hose body 400 and the hose connector 100.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hydraulic hose with anti-joint leakage, comprising a hose joint (100), a sealing ring (200), a hard tube (300), a hose body (400) and a fastening tube (500), characterized in that: The hose connector (100) is provided with an annular protrusion (110) on its circumferential inner wall, and an arc-shaped elastic pressure plate (112) and a hard tube (300) are provided on one side outer wall of the annular protrusion (110). The hard tube (300) is located on the inner side of the arc-shaped elastic pressure plate (112). There are nine arc-shaped elastic pressure plates (112), and the nine arc-shaped elastic pressure plates (112) are distributed in an annular array. An arc-shaped pressure block (113) is installed on the inner side wall of the arc-shaped elastic pressure plate (112). The hard tube (300) is installed inside one end of the hose body (400), and the hose body (400) is located on the arc-shaped elastic pressure plate (112). A fastening tube (500) is provided between the arc-shaped elastic pressure plate (112) and the hard tube (300), and between the outer side wall of the arc-shaped elastic pressure plate (112) and the circumferential inner wall of the hose connector (100). An annular sealing block (310) is installed on the end wall of one end of the hard tube (300), and the other end of the annular sealing block (310) is installed in the annular sealing groove (111), and the annular sealing groove (111) is opened on the outer side wall of one side of the annular protrusion (110). A sealing ring (200) is provided between the end wall of the other end of the annular sealing block (310) and the inner wall of the inner end of the annular sealing groove (111).

2. The hydraulic hose with anti-joint leakage according to claim 1, characterized in that: A truncated cone portion (330) is provided on the end wall of the other end of the hard tube (300), and the circumferential outer wall of one end of the hard tube (300) and the circumferential inner wall of the hose body (400) are overfitted.

3. The hydraulic hose with anti-joint leakage according to claim 1, characterized in that: An annular end cover (510) is installed on the end wall of one end of the fastening tube (500), and a truncated cone-shaped inclined portion (520) is provided on the circumferential inner wall of one end of the fastening tube (500).

4. The hydraulic hose with anti-joint leakage according to claim 1, characterized in that: An external thread is provided on the outer wall of the arc-shaped elastic pressure plate (112), and an internal thread is provided on the circumferential inner wall of the fastening tube (500). The internal thread on the inner wall of the fastening tube (500) and the external thread on the outer wall of the arc-shaped elastic pressure plate (112) are thread-matched.

5. The hydraulic hose for preventing joint leakage according to claim 1, characterized in that: An internal thread is provided on the circumferential inner wall of one end of the hose connector (100), and an external thread is provided on the circumferential outer wall of the fastening tube (500) near the annular end cover (510). The external thread on the circumferential outer wall of the fastening tube (500) and the internal thread on the circumferential inner wall of the hose connector (100) are threadedly engaged with each other.

6. The hydraulic hose for preventing joint leakage according to claim 1, characterized in that: The other end of the arc-shaped pressing block (113) is located in the annular groove (320), and the annular groove (320) is provided on the circumferential outer wall of the hard tube (300).

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