Quick-connection hydraulic pipe joint

Abstract

The utility model discloses a quick-connection hydraulic pipe joint, relates to the technical field of hydraulic pipe joints, and solves the problems that after the quick-connection hydraulic pipe joint is connected, even if the internal leakproofness is strong, the internal leakproofness is reduced after long-time use, so that the leakage condition of the hydraulic pipe joint cannot be conveniently observed, and the service life of the quick-connection hydraulic pipe joint is prolonged. The device comprises a first connector and a second connector, the first connector is arranged below the second connector, and the upper end of the first connector and the lower end of the second connector are fixedly connected with a first connecting pipe and a second connecting pipe correspondingly; through the cooperation between a first sealing pipe and a second sealing pipe, even if leakage occurs between a first connector and a second connector, the pressure in the first sealing pipe and the second sealing pipe is increased, and whether leakage occurs in the device or not can be conveniently observed through data penetrating through a pressure detector.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pipe joints, and specifically relates to a quick-connect hydraulic pipe joint. Background Art

[0002] When installing a hydraulic pipe, a quick connector can make the installation of the hydraulic pipe fast and convenient. After retrieval, a patent with the publication number CN206159706U discloses a quick-connect hydraulic pipe joint, belonging to the technical field of hydraulic fittings. It solves problems such as the short service life of existing hydraulic pipe joints. This quick-connect hydraulic pipe joint includes a first joint and a second joint. One end of the first joint is provided with a stepped hole, and a radial wall hole is provided on the side wall of the first joint. One end of the second joint extends into the joint core in the stepped hole. A fixed seat is fixedly connected to the side wall of the second joint. A toggle block is hinged to the fixed seat through a hinge shaft. The toggle block has a toggle block head matching the wall hole and toggle block feet located on both sides of the fixed seat for the hinge shaft to pass through. A sealing structure is provided between the joint core and the first joint. The wall hole is a closed through hole. The inner wall of the stepped hole axially has a first positioning plane, and the outer wall of the joint core has a second positioning plane matching the first positioning plane. An elastic structure is provided at the fixed seat to provide an elastic force so that the toggle block head always has a tendency to press into the wall hole. The utility model has advantages such as reliable connection and stable operation. However, after the quick-connect hydraulic pipe joint is connected, even if the internal sealing performance is strong, after long-term use, the internal sealing performance will decrease, so that it is not possible to conveniently observe the leakage of the hydraulic pipe joint, reducing the use efficiency of the device. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a quick-connect hydraulic pipe joint, which solves the problem that after the quick-connect hydraulic pipe joint is connected, even if the internal sealing performance is strong, after long-term use, the internal sealing performance will decrease, so that it is not possible to conveniently observe the leakage of the hydraulic pipe joint, reducing the use efficiency of the device.

[0004] To achieve the above objectives, the present utility model is realized through the following technical solutions: A quick-connect hydraulic pipe joint, including a first connector and a second connector. The first connector is disposed below the second connector. The upper end of the first connector and the lower end of the second connector are respectively fixedly connected with a first connecting pipe and a second connecting pipe. The diameter of the second connecting pipe is greater than that of the first connecting pipe. The first connecting pipe is slidably connected to the inside of the second connecting pipe, and the side walls are hermetically connected to each other through an installed sealing ring. The pipe wall of the first connecting pipe and the outer side wall of the second connecting pipe are respectively fixedly sleeved with a first sealing pipe and a second sealing pipe. After the first connecting pipe and the second connecting pipe are connected, the side walls of the first sealing pipe and the second sealing pipe are closely attached. A sealing groove is provided inside the top side wall of the first sealing pipe. A sealing pad is fixedly installed inside the bottom surface of the second sealing pipe. The sealing pad is hermetically connected to the inside of the sealing groove. A pressure sensor is fixedly installed inside the side wall of the first sealing pipe.

[0005] Preferably, connecting holes are equidistantly arranged inside the side wall of the first connecting pipe, and mounting holes are equidistantly arranged inside the side wall of the second connecting pipe. Connecting balls are slidably connected inside the mounting holes. The positions of the connecting balls correspond to those of the connecting holes, and their sizes match each other. The connecting balls are disposed above the second sealing pipe, thus facilitating the connection of the first connecting pipe and the second connecting pipe. The position of the first connecting pipe can be limited through the connecting balls.

[0006] Preferably, a pressing pipe is slidably sleeved on the pipe wall of the second connecting pipe. A support ring is fixedly sleeved on the pipe wall of the second connecting pipe. Tension springs are fixedly installed at equal intervals between the side walls of the support ring and the pressing pipe. Fixing rods are arranged inside the tension springs. One end of the fixing rod is fixedly connected to the side wall of the support ring, and the other end passes through the inside of the pressing pipe and slides inside the pressing pipe. The lower side wall of the pressing pipe after resetting is attached to the side wall of the second sealing pipe, thus facilitating the pressing of the installed connecting balls to make the positions of the connecting balls stable inside the mounting holes.

[0007] Preferably, a moving groove is provided inside the side wall of the mounting hole. The diameter of the moving groove is larger than that of the connecting ball, thus facilitating the movement of the connecting ball inside the mounting hole.

[0008] The present utility model provides a quick-connect hydraulic pipe joint. It has the following beneficial effects:

[0009] 1. For this quick-connect hydraulic pipe joint, when in use, through the cooperation between the first sealing pipe and the second sealing pipe, even if there is a leakage phenomenon between the first connector and the second connector, the pressure inside the first sealing pipe and the second sealing pipe will increase. Through the data passed through the pressure detector, it is possible to conveniently observe whether there is a leakage inside the device;

[0010] 2. For this quick-connect hydraulic pipe joint, when in use, the first sealing pipe and the second sealing pipe are respectively fixedly connected to the first connector and the second connector, and the use of the sealing gasket and the sealing groove can seal the inside of the first sealing pipe and the second sealing pipe, which can increase the accuracy of the internal detection result and improve the use efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 is a schematic diagram of the structure of the first connector of the present invention;

[0013] Figure 3 is a schematic diagram of the bottom structure of the second connector of the present invention;

[0014] Figure 4 is a schematic diagram of the structure of the second connector of the present invention after the pressure pipe rises;

[0015] Figure 5 is a schematic diagram of the structure of the second connecting pipe of the present invention;

[0016] Figure 6 of the present invention Figure 3 is a schematic diagram of the structure of part A;

[0017] Figure 7 of the present invention Figure 5 is a schematic diagram of the structure of part B.

[0018] In the figure, 1 - first connector, 2 - second connector, 3 - first sealing pipe, 4 - second sealing pipe, 5 - pressure pipe, 6 - support ring, 7 - pressure sensor, 8 - connection hole, 9 - sealing groove, 10 - sealing gasket, 11 - connection ball, 12 - tension spring, 13 - fixed rod, 14 - mounting hole, 15 - moving groove, 16 - first connecting pipe, 17 - second connecting pipe. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] Please refer to Figures 1-7 , an embodiment of the present utility model provides a quick-connect hydraulic pipe joint, including a first connector 1 and a second connector 2. The first connector 1 is disposed below the second connector 2. A first connecting pipe 16 and a second connecting pipe 17 are respectively and fixedly connected to the upper end of the first connector 1 and the lower end of the second connector 2. The diameter of the second connecting pipe 17 is larger than that of the first connecting pipe 16. The first connecting pipe 16 is slidably connected to the inside of the second connecting pipe 17, and the side walls are hermetically connected through an installed sealing ring. A first sealing pipe 3 and a second sealing pipe 4 are respectively and fixedly sleeved on the pipe wall of the first connecting pipe 16 and the outer side wall of the second connecting pipe 17. After the first connecting pipe 16 and the second connecting pipe 17 are connected, the side walls of the first sealing pipe 3 and the second sealing pipe 4 are closely attached. A sealing groove 9 is provided inside the top side wall of the first sealing pipe 3. A sealing pad 10 is fixedly installed inside the bottom surface of the second sealing pipe 4. The sealing pad 10 is hermetically connected to the inside of the sealing groove 9. A pressure sensor 7 is fixedly installed inside the side wall of the first sealing pipe 3. After connecting the first connector 1 and the second connector 2, the first sealing pipe 3 and the second sealing pipe 4 are hermetically connected, and at the same time, the space inside the first sealing pipe 3 and the second sealing pipe 4 can be completely sealed. At this time, through the pressure sensor 7, the pressure data when there is no liquid leakage can be observed. When there is internal leakage, the pressure inside the first sealing pipe 3 and the second sealing pipe 4 will increase. At this time, by observing the pressure sensor, it is possible to conveniently know that there is a leakage between the first connector 1 and the second connector 2.

[0022] Embodiment 2

[0023] In this embodiment, as Figures 1-7As shown, connecting holes 8 are equidistantly arranged inside the side wall of the first connecting pipe 16, mounting holes 14 are equidistantly arranged inside the side wall of the second connecting pipe 17, connecting balls 11 are slidably connected inside the mounting holes 14, the positions of the connecting balls 11 correspond to those of the connecting holes 8, and their sizes match each other. The connecting balls 11 are arranged above the second sealing pipe 4. When connecting the first connector 1 and the second connector 2, the first connecting pipe 16 is slidably connected inside the second connecting pipe 17, and the connecting balls 11 can enter the inside of the mounting holes 14, enabling the first connecting pipe 16 and the second connecting pipe 17 to be conveniently connected. A pressure pipe 5 is slidably sleeved on the pipe wall of the second connecting pipe 17, a support ring 6 is fixedly sleeved on the pipe wall of the second connecting pipe 17, tension springs 12 are fixedly installed at equal intervals between the side wall of the support ring 6 and the side wall of the pressure pipe 5. Fixed rods 13 are arranged inside the tension springs 12. One end of the fixed rod 13 is fixedly connected to the side wall of the support ring 6, and the other end passes through the inside of the pressure pipe 5 and slides inside the pressure pipe 5. The lower end side wall of the pressure pipe 5 fits against the side wall of the second sealing pipe 4 after resetting. A moving groove 15 is arranged inside the side wall of the mounting hole 14, and the diameter of the moving groove 15 is larger than the diameter of the connecting ball 11. When connecting the first connecting pipe 16 and the second connecting pipe 17, the pressure pipe 5 is moved upward. When the first connecting pipe 6 enters the inside of the second connecting pipe 17, the side wall of the first connecting pipe 6 squeezes the connecting balls 11, causing the connecting balls 11 to move outward of the mounting holes 14. When the connecting balls 11 enter the inside of the mounting holes 14, the pressure pipe 5 is reset by the tension springs 12, and the connecting balls 11 are squeezed again, enabling the connecting balls 11 to be tightly connected inside the mounting holes 14.

[0024] It should be noted that in this embodiment, when using the quick-connect hydraulic pipe joint, as Figures 1-7As shown, when the first connecting pipe 16 and the second connecting pipe 17 are connected, the pressing pipe 5 is moved upward. When the first connecting pipe 6 enters the interior of the second connecting pipe 17, the side wall of the first connecting pipe 6 presses the connecting ball 11, causing the connecting ball 11 to move towards the outside of the mounting hole 14. When the connecting ball 11 enters the interior of the mounting hole 14, the pressing pipe 5 is reset by the tension spring 12, and the connecting ball 11 is pressed again, enabling the connecting ball 11 to be firmly connected inside the mounting hole 14, so that the connection between the first connecting pipe 16 and the second connecting pipe 17 can be tightened. Conversely, moving the pressing pipe 5 upward and then moving the entire second connector 2 upward can conveniently separate the first connector 1 from the second connector 2. After connecting the first connector 1 and the second connector 2, the first sealing pipe 3 and the second sealing pipe 4 are hermetically connected, and at the same time, the spaces inside the first sealing pipe 3 and the second sealing pipe 4 can be completely sealed. At this time, through the pressure sensor 7, the pressure data when there is no liquid leakage can be observed. When there is internal leakage, the pressure inside the first sealing pipe 3 and the second sealing pipe 4 will increase. At this time, by observing the pressure sensor, it can be conveniently known that there is a leakage between the first connector 1 and the second connector 2.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quick-connect hydraulic pipe joint, characterized in that: The invention comprises a first connecting head (1) and a second connecting head (2), wherein the first connecting head (1) is arranged below the second connecting head (2), the upper end of the first connecting head (1) and the lower end of the second connecting head (2) are respectively fixedly connected with a first connecting tube (16) and a second connecting tube (17), the diameter of the second connecting tube (17) is larger than the diameter of the first connecting tube (16), the first connecting tube (16) is slidably connected to the inside of the second connecting tube (17), and the side walls are sealed and connected to each other by installing a sealing ring, and the tube wall of the first connecting tube (16) and the second connecting tube (17) are fixedly connected to each other. The outer side walls of the connecting pipe (17) are respectively fixedly sleeved with a first sealing tube (3) and a second sealing tube (4); after the first connecting pipe (16) and the second connecting pipe (17) are connected, the side walls of the first sealing tube (3) and the second sealing tube (4) are tightly fitted; a sealing groove (9) is provided inside the top side wall of the first sealing tube (3); a sealing gasket (10) is fixedly installed inside the bottom side wall of the second sealing tube (4); the sealing gasket (10) is sealingly connected to the inside of the sealing groove (9); and a pressure sensor (7) is fixedly installed inside the side wall of the first sealing tube (3).

2. A quick-connect hydraulic pipe joint according to claim 1, characterized in that: The side wall of the first connecting tube (16) is provided with connecting holes (8) at equal intervals, and the side wall of the second connecting tube (17) is provided with mounting holes (14) at equal intervals. The mounting holes (14) are slidably connected with connecting balls (11). The positions of the connecting balls (11) and the connecting holes (8) correspond to each other, and the sizes match each other. The connecting balls (11) are arranged above the second sealing tube (4).

3. A quick-connect hydraulic pipe joint according to claim 2, characterized in that: The tube wall of the second connecting tube (17) is slidably sleeved with a pressing tube (5), and the tube wall of the second connecting tube (17) is fixedly sleeved with a supporting ring (6). Tensioning springs (12) are fixedly installed at equal intervals between the supporting ring (6) and the side wall of the pressing tube (5). A fixing rod (13) is arranged inside the tensioning spring (12). One end of the fixing rod (13) is fixedly connected to the side wall of the supporting ring (6), and the other end passes through the inside of the pressing tube (5) and slides with the inside of the pressing tube (5). After the pressing tube (5) is reset, the lower end side wall is in contact with the side wall of the second sealing tube (4).

4. A quick-connect hydraulic pipe joint according to claim 2, characterized in that: A moving groove (15) is provided inside the side wall of the mounting hole (14), and the diameter of the moving groove (15) is larger than the diameter of the connecting ball (11).

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