Hydraulic hose quick connecting device

Abstract

The utility model provides a hydraulic hose quick connecting device, and belongs to the technical field of hydraulic connectors. The hydraulic hose quick connecting device comprises a fixing part, a first connecting part and a second connecting part, the movable ring is arranged in the first mounting channel and can move in the axial direction of the first mounting channel, a second mounting channel is formed in the movable ring, and the movable ring is further provided with a plurality of first through holes penetrating through the side wall of the movable ring; a second channel is formed in the core pipe, a sunken annular limiting groove is formed in the outer side wall of the core pipe, and one end of the core pipe is assembled into the second mounting channel from the side, away from the first channel, of the second mounting channel; and the limiting assembly comprises an elastic retaining part and a rolling body set, the rolling body set comprises a plurality of rolling bodies located in the first through hole, the elastic retaining part is used for retaining the movable ring at the locking position, and when the movable ring is located at the locking position, the rolling bodies are partially sunken into the annular limiting groove. The hydraulic hose quick connection device can facilitate compact arrangement of pipelines and is suitable for pipeline rotation application scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic joint technical field especially relates to a hydraulic hose quick coupling device. BACKGROUND

[0002] In the hydraulic system, often need to connect two pipeline using scenarios. For example, one end of the hydraulic hose is connected to the hydraulic components through the joint, so that the hydraulic hose and the pipeline in the hydraulic components are connected.

[0003] In the prior art, the joint is connected to the hydraulic component through the threaded connection, and the threaded connection needs to be tightened by a wrench due to the need for sealing and stable connection. In order to provide operating space for the wrench, the hydraulic hoses need to be spaced apart by a certain distance, which will result in the overall structure cannot be arranged compactly. And this threaded connection method, if the hose needs to rotate itself during later use, it will be twisted, and long-term use will cause deformation or affect performance. UTILITY MODEL CONTENTS

[0004] One object of the utility model is to provide a hydraulic hose quick coupling device, which can facilitate the compact arrangement of the pipeline and adapt to the pipeline rotation application scenario.

[0005] A further object of the utility model is to unlock the device in a simple way.

[0006] In particular, the embodiments of the present application provide a hydraulic hose quick coupling device, comprising:

[0007] The fixed part is provided with a first channel and a first installation channel;

[0008] The movable ring is arranged in the first installation channel and can move along the axial direction of the first installation channel, the inside of the movable ring is provided with a second installation channel, and the movable ring is further provided with a plurality of first through holes penetrating through the side wall thereof;

[0009] The core pipe is provided with a second channel in the inside and an annular limiting groove recessed in the outside wall, one end of the core pipe is assembled into the second installation channel from the side of the second installation channel away from the first channel;

[0010] The limiting assembly comprises an elastic retaining member and a rolling body group, the rolling body group comprises a plurality of rolling bodies located in the first through holes, the elastic retaining member is used for retaining the movable ring at a locking position, and when the movable ring is located at the locking position, the rolling bodies are partially sunk into the annular limiting groove.

[0011] Further, in the assembly direction of the core pipe, the fixed part is further provided with a limiting part located downstream of the annular limiting groove;

[0012] The hydraulic hose quick connecting device further comprises an unlocking member partially inserted into the first mounting channel and arranged to be movable along the axial direction of the first mounting channel, the unlocking member being used to push the moving ring to the unlocking position, and when the moving ring is in the unlocking position, the rolling body partially sinks into the limiting portion and completely separates from the annular limiting groove.

[0013] Further, the unlocking member is a cylindrical member and is sleeved outside the core pipe.

[0014] Further, the fixing portion comprises:

[0015] a main housing, an inside of which is provided with the first channel and a mounting cavity in communication with the first channel;

[0016] a static ring fixed in the mounting cavity, an inside of the static ring being provided with the first mounting channel and the limiting portion.

[0017] Further, the moving ring is provided with a strip-shaped hole extending along the axial direction and penetrating through the side wall thereof.

[0018] The static ring is further provided with a second through hole penetrating through the side wall thereof, a limiting pin being mounted in the second through hole, the limiting pin extending into the strip-shaped hole to form a rotation-preventing connection between the moving ring and the static ring.

[0019] Further, the second through hole is a stepped hole, and the limiting pin is in the form of a stepped shaft matched with the stepped hole.

[0020] Further, the elastic retaining member is a spring, and two ends of the spring are respectively in abutment with the moving ring and the static ring.

[0021] Further, the fixing portion further comprises a fixing cover arranged on a side of the moving ring away from the first channel, the fixing cover being connected with the main housing and being used to fix the static ring in the mounting cavity.

[0022] Further, a side of the static ring away from the fixing cover is provided with a sealing ring, the sealing ring being tightly sleeved at the outer wall of the core pipe.

[0023] Further, the limiting portion is a through hole penetrating through the side wall of the static ring, and an outer side of the limiting portion is provided with a plugging cover.

[0024] According to the first aspect of the present application, the hydraulic hose quick connecting device retains the moving ring in the locking position by means of the elastic retaining member, and in the locking position, the rolling body in the moving ring is partially clamped into the annular limiting groove of the core pipe, so that the core pipe can freely rotate relative to the moving ring, and the pipeline (generally a hose) connected with the core pipe can freely rotate according to the working condition, and will not be twisted, thereby avoiding the performance degradation of the pipeline due to the twisting.

[0025] Further, during installation, the core pipe can be directly inserted into the second installation channel in the moving ring to achieve stable clamping, so the installation is convenient, compared with the threaded connection mode in the prior art, the connection mode of the application does not need to rely on installation tools (such as wrenches), is more suitable for the installation and maintenance of the pipeline assembly in a narrow space, and is beneficial to the layout of closer pipelines.

[0026] According to the second aspect of the application, the unlocking member is inserted into the first installation channel and moves in the axial direction to unlock the core pipe, since the unlocking member is arranged in the first installation channel, the overall volume is small, and the unlocking mode is simple.

[0027] Further, through the cooperation of the limiting pin at the static ring and the strip-shaped hole on the moving ring, the anti-rotation connection between the moving ring and the static ring and the limitation of the moving stroke of the moving ring can be realized at the same time, so that the moving ring can only move in the axial direction and cannot be randomly rotated, and this limiting mode is simple and easy to realize. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 is a structural schematic view of a hydraulic hose quick connection device according to an embodiment of the present application;

[0029] Figure 2 is Figure 1 Fig. 4 is a right view of the hydraulic hose quick connection device of the embodiment;

[0030] Figure 3 is Figure 2 Fig. 6 is a sectional view along A-A;

[0031] Figure 4 is Figure 1 Fig. 7 is an exploded schematic view of the hydraulic hose quick connection device of the embodiment;

[0032] REFERENCE NUMERALS:

[0033] Hydraulic hose quick connection device 100, fixed part 10, first channel 101, second through hole 103, limiting part 102, main shell 11, static ring 12, fixed cover 13, plug cover 14, moving ring 20, first through hole 201, strip-shaped hole 202, core pipe 30, second channel 301, annular limiting groove 302, elastic retaining member 40, rolling body 50, unlocking member 60, limiting pin 70, sealing ring 80. DETAILED DESCRIPTION

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0035] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] Figure 1 This is a schematic diagram of the structure of a hydraulic hose quick-connect device 100 according to an embodiment of the present invention. Figure 2 yes Figure 1 Right view of the hydraulic hose quick-connect device 100 of the embodiment. Figure 3 for Figure 2 A cross-sectional view along AA. Figure 4 for Figure 1 An exploded view of the hydraulic hose quick-connect device 100 in this embodiment. Figure 3 As shown, in one embodiment, the hydraulic hose quick-connect device 100 includes a fixing part 10, a moving ring 20, a core tube 30, and a limiting assembly. The fixing part 10 has a communicating first channel 101 and a first mounting channel. The moving ring 20 is disposed within the first mounting channel and can move axially along the first mounting channel (hereinafter, axial and radial directions can be understood as the axial and radial directions of the first mounting channel). The moving ring 20 has a second mounting channel inside and also has a plurality of first through holes 201 penetrating its sidewall. The core tube 30 has a second channel 301 inside and a recessed annular limiting groove 302 on its outer sidewall, for example... Figure 4The radial section of the annular limiting groove 302 in the shown embodiment can be rectangular, "V" shaped, etc., which is not limited herein. One end of the core pipe 30 is assembled into the second mounting channel from the side of the second mounting channel away from the first channel 101. The other end of the core pipe 30 can be connected to a hydraulic pipeline, for example Figure 4 As shown, the right end surface of the core pipe 30 is formed with a protruding rib for directly sleeving a hydraulic hose. The limiting assembly includes an elastic retainer 40 and a rolling body 50 group, the rolling body 50 group includes a plurality of rolling bodies 50 located in the first through hole 201, and the elastic retainer is used to retain the movable ring 20 at a locking position, when the movable ring 20 is at the locking position, the rolling bodies 50 partially sink into the annular limiting groove 302. The elastic retainer 40 herein refers to an arrangement having elasticity in the axial direction, for example, a coil spring, a spring sheet, etc. can be selected as the elastic retainer 40, and the shape of the rolling body 50 herein can be cylindrical or spherical, for example, a steel ball is selected as the rolling body 50.

[0038] The hydraulic hose quick connection device 100 of the embodiment retains the movable ring 20 at the locking position by the elastic retainer 40, and at the locking position, the rolling bodies 50 in the movable ring 20 partially enter the annular limiting groove 302 of the core pipe 30, so that the core pipe 30 can freely rotate relative to the movable ring 20, so that the pipeline (generally a hose) connected to the core pipe 30 can freely rotate according to the working condition, without being twisted, avoiding the performance degradation of the pipeline due to twisting.

[0039] Further, during installation, the core pipe 30 can be directly inserted into the second mounting channel in the movable ring 20 to achieve stable clamping, so the installation is convenient, compared with the threaded connection method in the prior art, the connection method of the present application does not need to rely on installation tools (such as wrenches), and is more suitable for the installation and maintenance of pipeline assemblies in narrow spaces, and is also conducive to arranging pipelines with closer distances.

[0040] In a further embodiment, in the assembly direction of the core pipe 30, the fixed part 10 is further provided with a limiting part 102 located downstream of the annular limiting groove 302. The hydraulic hose quick connection device 100 further includes an unlocking member 60 partially inserted into the first mounting channel and arranged to move along the axial direction of the first mounting channel, and the unlocking member 60 is used to push the movable ring 20 to move to an unlocking position. When the movable ring 20 is at the unlocking position, the rolling bodies 50 partially sink into the limiting part 102 and completely leave the annular limiting groove 302. The limiting part 102 herein can be a groove arranged one-to-one with each rolling body 50, can also be an annular groove, or can be a through hole with a plug 14 (see Figure 4 ), as long as it can accommodate the rolling body 50 when the movable ring 20 is at the unlocking position. In an embodiment, the unlocking member 60 is a cylindrical member and is sleeved outside the core pipe 30. As Figure 4As shown, the outer wall of the unlocking piece 60 can also be provided with a clamping structure, that is, a plurality of clamping arms arranged circumferentially, each clamping arm protrudes radially and has a certain deformation capability in the radial direction, so that the unlocking piece 60 cannot be pulled out after being inserted into the first mounting channel. The end of the unlocking piece 60 away from the moving ring 20 is also provided with an annular protrusion to limit the maximum displacement of the unlocking piece 60 to the left.

[0041] The unlocking piece 60 of the embodiment can achieve the unlocking of the core pipe 30 by extending into the first mounting channel and moving axially. Since the unlocking piece 60 is arranged in the first mounting channel, the overall volume is small, and the unlocking mode is simple.

[0042] In one embodiment, as shown in Figure 3 As shown in FIG. 4, the fixed part 10 includes a main housing 11, a static ring 12, and a fixed cover 13. The inside of the main housing 11 is provided with a first channel 101 and a mounting cavity communicating with the first channel 101. The static ring 12 is fixed in the mounting cavity, and the inside of the static ring 12 is provided with a first mounting channel and a limiting part 102. In the embodiment, the static ring 12 is fixed in the mounting cavity of the main housing 11 by the fixed cover 13. The mounting cavity is formed with a positioning surface perpendicular to the axial direction. The fixed cover 13 is arranged on the side of the moving ring 20 away from the first channel 101. The fixed cover 13 is connected with the main housing 11 and is pressed against the static ring 12 on one side of the static ring 12, so that the static ring 12 abuts against the positioning surface, thereby achieving the fixation of the static ring 12 in the main housing 11. The fixed cover 13 can be threadedly connected with the mounting cavity (as shown in Figure 3 In other embodiments, the fixed cover 13 can also be connected with the mounting cavity by clamping or other means, which is not limited here.

[0043] The above-mentioned main housing 11 can be regarded as a component to be connected with the core pipe 30, or as a connecting piece assembled on the component to be connected with the core pipe 30, for example Figure 3 As shown in FIG. 1, the left side of the main housing 11 is also provided with a threaded part for connecting with the component. In other embodiments not shown, the main housing 11 can be regarded as the component to be connected, and the inside of the main housing 11 is formed with the first channel 101 to be connected and the mounting cavity for mounting the components such as the static ring 12, the moving ring 20, and the core pipe 30. The right end of the core pipe 30 is connected with a pipeline. After the left end of the core pipe 30 is inserted into the moving ring 20, the pipeline and the component to be connected are connected, that is, the first channel 101 and the second channel 301 are connected.

[0044] Further, an installation space is formed between the static ring 12 and the moving ring 20 for installing an elastic positioning piece. That is, the first channel 101 of the static ring 12 is provided in the form of a stepped hole, so that the static ring 12 forms a stepped surface facing the fixed cover 13. The end of the moving ring 20 close to the fixed cover 13 is formed with an annular boss. The two ends of the elastic positioning piece abut against the stepped surface and the annular boss respectively, thereby achieving the installation of the elastic positioning piece.

[0045] In one embodiment, the limiting portion 102 is a through hole penetrating the side wall of the static ring 12, and a plug 14 is arranged on the outer side of the limiting portion 102 to block the through hole. The limiting portion 102 is arranged in the form of a through hole, so that the rolling body 50 can be conveniently assembled from the outer circumferential side of the static ring 12 to the static ring 12. The plug 14 can block the rolling body 50 in the radial direction, and limit the distance of the rolling body 50 entering the limiting portion 102.

[0046] In one embodiment, the dynamic ring 20 and the static ring 12 are rotationally connected. Specifically, the dynamic ring 20 is provided with a strip-shaped hole 202 extending in the axial direction and penetrating the side wall thereof. The static ring 12 is further provided with a second through hole 103 penetrating the side wall thereof, and a limiting pin 70 is arranged in the second through hole 103, and the limiting pin 70 extends into the strip-shaped hole 202, so that the dynamic ring 20 and the static ring 12 are rotationally connected. Here, the limiting pin 70 and the core tube 30 can be arranged not to contact each other, or a avoiding groove can be arranged at the position opposite to the limiting pin 70 relative to the core tube 30, so that the limiting pin 70 does not hinder the free rotation of the core tube 30. In one embodiment, the second through hole 103 is a stepped hole, and the limiting pin 70 is in the form of a stepped shaft matched with the stepped hole. In this way, the limiting pin 70 can be conveniently assembled from the outer circumferential side of the static ring 12 into the second through hole 103, and after the static ring 12 is fixed to the outer shell, the radial freedom of the limiting pin 70 can be naturally limited by the inner wall of the outer shell, and the strip-shaped hole 202 arranged on the dynamic ring 20 can realize the movement of the dynamic ring 20 within a certain stroke in the axial direction.

[0047] In the embodiment, the rotationally connection between the dynamic ring 20 and the static ring 12 and the limitation of the movement stroke of the dynamic ring 20 can be realized simultaneously by the cooperation of the limiting pin 70 at the static ring 12 and the strip-shaped hole 202 on the dynamic ring 20, so that the dynamic ring 20 can only move in the axial direction and cannot rotate randomly. This limiting method is simple and easy to realize.

[0048] In a further embodiment, a sealing ring 80 is arranged on the side of the static ring 12 away from the fixed cover 13, and the sealing ring is tightly sleeved on the outer wall of the core tube 30. By arranging the sealing ring 80, the liquid in the first channel 101 and the second channel 301 can be prevented from leaking out.

[0049] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A hydraulic hose quick coupling device, characterized by, The utility model relates to a hydraulic hose quick connecting device, which comprises a fixed part, a movable ring, a core pipe and a limiting assembly. The fixed part is provided with a first channel and a first mounting channel in communication. The movable ring is arranged in the first mounting channel and can move along the axial direction of the first mounting channel. The inside of the movable ring is provided with a second mounting channel. The movable ring is further provided with a plurality of first through holes penetrating through the side wall thereof.

2. The hydraulic hose quick attach device of claim 1, wherein, The core pipe is provided with a second channel in the inside and an annular limiting groove in the outside. One end of the core pipe is assembled into the second mounting channel from the side of the second mounting channel away from the first channel.

3. The hydraulic hose quick attach device of claim 2, wherein, The limiting assembly comprises an elastic retaining member and a rolling body group.

4. Hydraulic hose quick coupling device according to claim 2 or 3, characterized in that The rolling body group comprises a plurality of rolling bodies in the first through holes. The elastic retaining member is used for retaining the movable ring at a locking position. When the movable ring is at the locking position, the rolling bodies are partially sunk into the annular limiting groove.

5. The hydraulic hose quick attach device of claim 4, wherein, In the assembly direction of the core pipe, the fixed part is further provided with a limiting part downstream of the annular limiting groove. The hydraulic hose quick connecting device further comprises an unlocking member partially inserted into the first mounting channel and arranged to move along the axial direction of the first mounting channel.

6. The hydraulic hose quick attach device of claim 5, wherein, The unlocking member is used for pushing the movable ring to move to an unlocking position.

7. The hydraulic hose quick attach device of claim 4, wherein, When the movable ring is at the unlocking position, the rolling bodies are partially sunk into the limiting part and completely separated from the annular limiting groove.

8. The hydraulic hose quick attach device of claim 4, wherein, The unlocking member is a cylindrical member and is sleeved on the outside of the core pipe.

9. The hydraulic hose quick attach device of claim 8, wherein, The fixed part comprises:

10. The hydraulic hose quick attach device of claim 4, wherein, A main housing is provided with the first channel and a mounting cavity in communication with the first channel in the inside. A static ring is fixed in the mounting cavity. The inside of the static ring is provided with the first mounting channel and the limiting part. The movable ring is provided with a strip-shaped hole extending along the axial direction and penetrating through the side wall thereof. The static ring is further provided with a second through hole penetrating through the side wall thereof. A limiting pin is installed in the second through hole. The limiting pin extends into the strip-shaped hole to form a rotation-preventing connection between the movable ring and the static ring. The second through hole is a stepped hole. The limiting pin is in the shape of a stepped shaft matched with the stepped hole. The elastic retaining member is a spring. The two ends of the spring respectively abut against the movable ring and the static ring. The fixed part further comprises a fixed cover arranged on the side of the movable ring away from the first channel. The fixed cover is connected with the main housing and is used for fixing the static ring in the mounting cavity. The side of the static ring away from the fixed cover is provided with a sealing ring tightly sleeved on the outer wall of the core pipe. The limiting part is a through hole penetrating through the side wall of the static ring. The outside of the limiting part is provided with a plugging cover for plugging.

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