Hydraulic pipe joint provided with protective structure and used for hydraulic hose connection

Abstract

The utility model relates to the field of hydraulic pipe joints, in particular to a hydraulic pipe joint with a protective structure for hydraulic hose connection. An annular groove is formed in the outer surface, close to a port, of a hydraulic pipe joint body, a transmission slope is arranged on the end face of the hydraulic pipe joint body, a containing groove is formed in the inner wall of a connector, a slope is arranged on the side surface of a limiting block, and a spring is fixed to the surface of the slope; the device has the beneficial effects that a connector can slowly rotate and move on the surface of a first thread head, when a limiting block makes contact with the end face of the first thread head, a transmission inclined face extrudes the limiting block through an inclined face, the limiting block is stored in a storage groove, and when the limiting block moves to an annular groove, a spring pushes the limiting block to be clamped in the annular groove; due to the screw-thread fit relation and the clamping relation between the limiting block and the annular groove, the connector cannot rotate on the surface of the first screw thread head, and looseness prevention of screw-thread fit between the hydraulic hose and the hydraulic pipe connector body is achieved.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic pipe joints, in particular to a hydraulic pipe joint with a protective structure for connecting a hydraulic hose. Background Art

[0002] Hydraulic pipe joints are components in hydraulic systems that connect high-pressure oil pipes.

[0003] In the prior art, in the hydraulic transmission system, the hydraulic hose plays an important role. It connects various hydraulic components and transmits pressure and liquid flow. When the hydraulic hose is connected to the hydraulic component, it is often connected through a hydraulic pipe joint, and the two are fixed by threaded cooperation.

[0004] However, the conventional hydraulic hose is connected to the hydraulic pipe joint through threaded fitting. When used for a long time, the threaded fitting between the two is easy to loosen. The loose threaded fitting can easily cause leakage when the hydraulic pipe outputs liquid to the hydraulic component, affecting the work. Utility Model Content

[0005] The utility model aims to provide a hydraulic pipe joint for connecting a hydraulic hose with a protective structure, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a hydraulic pipe joint for connecting a hydraulic hose with a protective structure, the hydraulic pipe joint for connecting a hydraulic hose with a protective structure comprising:

[0007] The main body of the hydraulic pipe joint; the outer surface of the main body of the hydraulic pipe joint near the port is provided with an annular groove, the end surface of the main body of the hydraulic pipe joint is provided with a transmission inclined surface, the surface of the main body of the hydraulic pipe joint is provided with a connector, the inner wall of the connector is provided with a receiving groove, and the end surface of the connector is fixed with a hydraulic hose;

[0008] A limit block; a side surface of the limit block is provided with an inclined surface, a spring is fixed to the inclined surface, and a pull rod is fixed to one side surface of the limit block.

[0009] Preferably, a first threaded head is fixed at one end of the hydraulic pipe joint body, and a second threaded head is fixed at the other end of the hydraulic pipe joint body. A ring groove is opened on the side of the second threaded head, a notch is opened at the end of the inner wall of the receiving groove, and a through hole is opened on the surface of one side of the inner wall of the receiving groove.

[0010] Preferably, a baffle is provided on the inner surface of the notch, a limiting block is fixed on one side surface of the baffle, a pull rod is fixed on the other side surface of the baffle, and a pull block is fixed on the end surface of the pull rod.

[0011] Preferably, the annular grooves are provided with two groups, which are symmetrically distributed on the arc surface of the hydraulic pipe fitting body, and the limit blocks are provided with multiple groups, which are circumferentially distributed on the inner wall surface of the connector, and the limit blocks correspond to the annular grooves, and the limit blocks are clamped in the annular grooves, and the two are movably connected.

[0012] Preferably, the bottom area of ​​the storage groove is the same as the bottom area of ​​the baffle, the area of ​​the notch is the same as the bottom area of ​​the limit block, the bottom area of ​​the baffle is larger than the bottom area of ​​the limit block, and the baffle corresponds to the storage groove, the baffle is clamped in the storage groove, and the two are movably connected.

[0013] Preferably, there are multiple groups of through holes, which are circumferentially distributed on the arc surface of the connector, and there are multiple groups of pull rods, which are circumferentially inserted on the surface of the connector, and the pull rods correspond to the through holes, and are clamped in the through holes, and the two are movably connected.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The connecting head will slowly rotate and move on the surface of the first threaded head. When the limit block contacts the end face of the first threaded head, the transmission inclined surface will squeeze the limit block through the inclined surface, so that the limit block is stored in the storage groove. When the limit block moves to the annular groove, the spring will push the limit block to be clamped in the annular groove. Due to the thread matching relationship and the clamping relationship between the limit block and the annular groove, the connecting head cannot rotate on the surface of the first threaded head, thereby realizing the anti-loosening of the thread matching between the hydraulic hose and the hydraulic pipe joint body. At the same time, when the hydraulic hose needs to be removed, it is only necessary to pull the pull block to separate the limit block from the annular groove through the pull rod. At this time, the connecting head can be rotated to remove the hydraulic hose from the hydraulic pipe joint body. This structure is simple and easy to operate, which is conducive to improving its use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the hydraulic pipe joint of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the connector structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the limit block structure of the utility model.

[0020] In the figure: 1, hydraulic pipe joint body; 2, connector; 3, pull block; 4, hydraulic hose; 5, first thread head; 6, second thread head; 7, annular groove; 8, transmission inclined surface; 9, storage groove; 10, through hole;

[0021] 11. Notch; 12. Limit block; 13. Inclined surface; 14. Baffle; 15. Spring; 16. Pull rod. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] For example, see Figure 1-Figure 4 The utility model provides a technical solution: a hydraulic pipe joint for connecting a hydraulic hose with a protective structure, an annular groove 7 is provided on the outer surface of the hydraulic pipe joint body 1 near the port, and due to the relationship between the thread matching and the clamping relationship between the limit block 12 and the annular groove 7, the connector 2 cannot rotate on the surface of the first thread head 5, thereby realizing the anti-loosening of the thread matching between the hydraulic hose 4 and the hydraulic pipe joint body 1, and a transmission inclined surface 8 is provided on the end surface of the hydraulic pipe joint body 1. Since the transmission inclined surface 8 has the same slope as the inclined surface 13, the transmission inclined surface 8 will squeeze the limit block 12 through the inclined surface 13, so that the limit block 12 is received in the receiving groove 9, and a connector 2 is sleeved on the surface of the hydraulic pipe joint body 1, and a receiving groove 9 is provided on the inner wall of the connector 2, and a hydraulic hose 4 is fixed on the end surface of the connector 2;

[0024] A slope 13 is provided on the side surface of the limit block 12, and a spring 15 is fixed on the surface of the slope 13. Due to the elasticity of the spring 15, the spring 15 will push the limit block 12 to be stuck in the annular groove 7. A pull rod 16 is fixed on the side surface of the limit block 12. When the hydraulic hose 4 needs to be removed, it is only necessary to pull the pull block 3 to separate the limit block 12 from the annular groove 7 through the pull rod 16. At this time, the connector 2 can be rotated to remove the hydraulic hose 4 from the hydraulic pipe joint body 1.

[0025] On the basis of the first embodiment, in order to prevent the threaded fit between the hydraulic hose 4 and the hydraulic pipe joint body 1 from loosening, a first thread head 5 is fixed at one end of the hydraulic pipe joint body 1, and a second thread head 6 is fixed at the other end of the hydraulic pipe joint body 1. An annular groove 7 is provided on the side of the second thread head 6, a notch 11 is provided at the end of the inner wall of the receiving groove 9, and a through hole 10 is provided on the surface of one side of the inner wall of the receiving groove 9;

[0026] A baffle 14 is provided on the inner surface of the notch 11, a limiting block 12 is fixed on one side of the baffle 14, a pull rod 16 is fixed on the other side of the baffle 14, and a pull block 3 is fixed on the end surface of the pull rod 16;

[0027] There are two groups of annular grooves 7, which are symmetrically distributed on the arc surface of the hydraulic pipe joint body 1. There are multiple groups of limit blocks 12, which are circumferentially distributed on the inner wall surface of the connector 2. The limit blocks 12 correspond to the annular grooves 7. The limit blocks 12 are clamped in the annular grooves 7, and the two are movably connected. Due to the relationship of thread matching and the clamping relationship between the limit blocks 12 and the annular grooves 7, the connector 2 cannot rotate on the surface of the first thread head 5, thereby realizing the anti-loosening of the thread matching between the hydraulic hose 4 and the hydraulic pipe joint body 1.

[0028] The bottom area of ​​the storage groove 9 is the same as the bottom area of ​​the baffle 14, the area of ​​the notch 11 is the same as the bottom area of ​​the limit block 12, and the bottom area of ​​the baffle 14 is larger than the bottom area of ​​the limit block 12, and the baffle 14 corresponds to the storage groove 9, and the baffle 14 is clamped in the storage groove 9, and the two are movably connected, so the baffle 14 will not be separated from the storage groove 9, and the limit block 12 will not be completely separated from the storage groove 9;

[0029] There are multiple groups of through holes 10, which are circumferentially distributed on the arc-shaped surface of the connector 2. There are multiple groups of pull rods 16, which are circumferentially inserted on the surface of the connector 2, and the pull rods 16 correspond to the through holes 10. The pull rods 16 are stuck in the through holes 10, and the two are movably connected. When the hydraulic hose 4 needs to be removed, it is only necessary to pull the pull block 3 to separate the limit block 12 from the annular groove 7 through the pull rod 16. At this time, the connector 2 can be rotated to remove the hydraulic hose 4 from the hydraulic pipe joint body 1.

[0030] In actual use, when the hydraulic hose 4 is connected to the hydraulic pipe joint body 1, it is first threaded, and the connector 2 will slowly rotate and move on the surface of the first thread head 5. When the limit block 12 contacts the end face of the first thread head 5, since the transmission inclined surface 8 and the inclined surface 13 have the same slope, the transmission inclined surface 8 will squeeze the limit block 12 through the inclined surface 13, so that the limit block 12 is stored in the storage groove 9. When the limit block 12 moves to the annular groove 7, due to the elasticity of the spring 15, the spring 15 will push the limit block 12 to be stuck in the annular groove 7, and at the same time The hydraulic hose 4 is completely connected to the hydraulic pipe joint body 1. Due to the threaded fit and the clamping relationship between the limit block 12 and the annular groove 7, the connector 2 cannot rotate on the surface of the first threaded head 5, thereby preventing the threaded fit between the hydraulic hose 4 and the hydraulic pipe joint body 1 from loosening. At the same time, when the hydraulic hose 4 needs to be removed, it is only necessary to pull the pull block 3 through the pull rod 16 to disengage the limit block 12 from the annular groove 7. At this time, the connector 2 can be rotated to remove the hydraulic hose 4 from the hydraulic pipe joint body 1. This structure is simple and easy to operate, which is conducive to improving its use effect.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic pipe joint for connecting a hydraulic hose with a protective structure, characterized in that: The hydraulic pipe joint for connecting the hydraulic hose with the protective structure comprises: A hydraulic pipe joint body (1); an annular groove (7) is provided on the outer surface of the hydraulic pipe joint body (1) near the port, a transmission inclined surface (8) is provided on the end surface of the hydraulic pipe joint body (1), a connector (2) is sleeved on the surface of the hydraulic pipe joint body (1), a receiving groove (9) is provided on the inner wall of the connector (2), and a hydraulic hose (4) is fixed on the end surface of the connector (2); A limit block (12); a side surface of the limit block (12) is provided with an inclined surface (13), a spring (15) is fixed on the surface of the inclined surface (13), and a pull rod (16) is fixed on one side surface of the limit block (12).

2. A hydraulic pipe joint with a protective structure for connecting a hydraulic hose according to claim 1, characterized in that: A first threaded head (5) is fixed to one end of the hydraulic pipe joint body (1), and a second threaded head (6) is fixed to the other end of the hydraulic pipe joint body (1). An annular groove (7) is provided on the side of the second threaded head (6), a notch (11) is provided at the end of the inner wall of the receiving groove (9), and a through hole (10) is provided on one side surface of the inner wall of the receiving groove (9).

3. A hydraulic pipe joint with a protective structure for connecting a hydraulic hose according to claim 2, characterized in that: The inner surface of the notch (11) is provided with a baffle (14), a limiting block (12) is fixed to one side surface of the baffle (14), a pull rod (16) is fixed to the other side surface of the baffle (14), and a pull block (3) is fixed to the end surface of the pull rod (16).

4. A hydraulic pipe joint with a protective structure for connecting a hydraulic hose according to claim 3, characterized in that: The annular grooves (7) are provided in two groups, and the two groups of annular grooves (7) are symmetrically distributed on the arc surface of the hydraulic pipe joint body (1). The limit blocks (12) are provided in multiple groups, and the multiple groups of limit blocks (12) are circumferentially distributed on the inner wall surface of the connector (2). The limit blocks (12) correspond to the annular grooves (7), and the limit blocks (12) are clamped in the annular grooves (7), and the two are movably connected.

5. A hydraulic pipe joint with a protective structure for connecting a hydraulic hose according to claim 4, characterized in that: The bottom area of ​​the storage groove (9) is the same as the bottom area of ​​the baffle (14), the area of ​​the notch (11) is the same as the bottom area of ​​the limit block (12), the bottom area of ​​the baffle (14) is larger than the bottom area of ​​the limit block (12), and the baffle (14) corresponds to the storage groove (9), the baffle (14) is clamped in the storage groove (9), and the two are movably connected.

6. A hydraulic pipe joint with a protective structure for connecting a hydraulic hose according to claim 5, characterized in that: The through holes (10) are provided in a plurality of groups, and the plurality of through holes (10) are distributed in a circular manner on the arc surface of the connector (2). The pull rods (16) are provided in a plurality of groups, and the plurality of pull rods (16) are inserted in a circular manner on the surface of the connector (2). The pull rods (16) correspond to the through holes (10), and the pull rods (16) are clamped in the through holes (10), and the two are movably connected.

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