阅读说明：本技术 一种新型电力机车用快速接头 (Novel quick connector for electric locomotive ) 是由 黄亦军 王平花 于 2020-05-27 设计创作，主要内容包括：本发明公开一种新型电力机车用快速接头,包括第一接头组件、第二接头组件和过渡锁紧件,第一接头组件包括第一连接套、第一轴和第一压缩弹簧,过渡锁紧件可拆卸套装第一连接套,以用于连接第一接头组件；第二接头组件包括第二连接套、第二轴和第二压缩弹簧,第二连接套的开口端插接过渡锁紧件,以使第二轴抵接并推动第一轴滑动,第一接头组件连通第二接头组件。新的快速接头取消了原有快速接头结构中的自锁定杆,降低快速接头的制造成本。第一接头组件与第二接头组件装配后,高压流体的压力主要由第二轴和第一轴承受,密封圈所承受的压力和磨损将大大减少,有利于提高快速接头的拔插次数和密封效果。(The invention discloses a novel quick connector for an electric locomotive, which comprises a first connector assembly, a second connector assembly and a transition locking piece, wherein the first connector assembly comprises a first connecting sleeve, a first shaft and a first compression spring; the second joint component comprises a second connecting sleeve, a second shaft and a second compression spring, the opening end of the second connecting sleeve is inserted with the transition locking piece so that the second shaft abuts against and pushes the first shaft to slide, and the first joint component is communicated with the second joint component. The new quick connector cancels the self-locking rod in the original quick connector structure, and reduces the manufacturing cost of the quick connector. After the first joint component and the second joint component are assembled, the pressure of high-pressure fluid is mainly borne by the second shaft and the first shaft, the pressure and the abrasion borne by the sealing ring are greatly reduced, and the pulling and inserting times and the sealing effect of the quick joint are favorably improved.)

1. A novel quick joint for an electric locomotive is characterized by comprising a first joint component, a second joint component and a transition locking piece, wherein the first joint component comprises a first shaft, a first compression spring and a first connecting sleeve which is provided with openings at two ends and is communicated with the first connecting sleeve to form a first installation space, the first shaft is axially provided with a first runner with openings at two ends, the first shaft is slidably sleeved in the first installation space along the direction of the connecting line of the two openings of the first connecting sleeve, the first compression spring is arranged in the first installation space and is abutted against one end, away from the second joint component, of the first shaft, so that the opening, away from the second joint component, of the first connecting sleeve is blocked or the first installation space and the first runner are communicated; the second joint component comprises a second shaft, a second compression spring and a second connecting sleeve, wherein the two ends of the second connecting sleeve are open, the second connecting sleeve is communicated to form a second mounting space, a second runner with two ends open is arranged on the second shaft along the axial direction, the second shaft is sleeved in the second mounting space in a sliding mode along the direction of the connecting line of the two openings of the second connecting sleeve, the second compression spring is arranged in the second mounting space and is abutted against one end, away from the first joint component, of the second shaft, so that the opening, away from the first joint component, of the second connecting sleeve is blocked or the second mounting space and the second runner are communicated; the transition locking piece is detachably connected with the first connecting sleeve and the second connecting sleeve so as to enable the second shaft to abut against and push the first shaft to slide; the first flow passage is in sealed communication with the second flow passage such that the first connector assembly communicates with the second connector assembly.

2. The quick connector of claim 1, wherein the first connecting sleeve includes a first sleeve seat and a first locking sleeve, the first sleeve seat and the first locking sleeve are coaxially detachably connected, one end of the first sleeve seat is used for communicating with external fluid equipment, and a first limiting hole for clamping the first compression spring and the first shaft is axially formed in the other end of the first sleeve seat.

3. The quick coupling for the electric locomotive according to claim 2, wherein a first reverse taper angle is formed at one end of the first locking sleeve, one end of the first shaft is slidably sleeved in the first locking sleeve, the other end of the first shaft is used for sealing the first reverse taper angle in a fitting manner under the spring force of the first compression spring, and a ball locking groove for connecting the transition locking member is formed in the outer wall of the first locking sleeve.

4. The novel quick connector for the electric locomotive according to claim 3, wherein the first shaft comprises a first piston rod and a first plug which are connected with each other, the first piston rod is provided with an inflow hole along the axial direction, the end of the first piston rod close to the first plug is provided with at least one group of first transition holes which penetrate through the wall thickness along the radial direction and are communicated with the inflow hole, the first piston rod penetrates through and slides in the inner hole of the first locking clamping sleeve, and a plurality of groups of sealing rings are embedded between the first piston rod and the first locking clamping sleeve; the first end cap is close to one end of the first piston rod is attached and sealed to the first inverted cone angle, and the first end cap deviates from one end of the first piston rod and abuts against the first compression spring.

5. The quick coupling for the electric locomotive according to claim 1, wherein the second connection sleeve comprises a second sleeve seat and a second locking sleeve, the second sleeve seat and the second locking sleeve are coaxially detachably connected, one end of the second sleeve seat is used for communicating with external fluid equipment, and a second limiting hole for clamping the second compression spring and the second shaft is axially formed in the other end of the second sleeve seat.

6. The novel quick connector for the electric locomotive according to claim 5, wherein one end of the second locking ferrule defines a second taper angle, and one end of the second locking ferrule facing away from the second taper angle defines a positioning hole, and the positioning hole defines a circumferential ring groove for inserting the transition locking member; one end of the second shaft is slidably sleeved in the second locking clamping sleeve, and the other end of the second shaft is used for sealing the second inverted cone angle in a fit manner under the spring force action of the second compression spring.

7. The novel quick connector for the electric locomotive according to claim 6, wherein the second shaft comprises a second piston rod, a second plug and a second top shaft which are connected with each other, the second piston rod is provided with an outflow hole along the axial direction, one end of the second piston rod close to the second plug is provided with at least one group of second transition holes which penetrate through the wall thickness along the radial direction and are communicated with the outflow hole, the second piston rod penetrates through and is slidably connected with an inner hole of the second locking ferrule, and a plurality of groups of sealing rings are embedded between the second piston rod and the second locking ferrule; one end, close to the second piston rod, of the second plug is attached to seal the second inverted cone angle, and one end, away from the second piston rod, of the second plug is abutted to the second compression spring.

8. The novel quick connector for the electric locomotive according to any one of claims 1 to 6, wherein the transition locking member comprises a steel column locking cutting sleeve and a knurled locking cutting sleeve sleeved outside the steel column locking cutting sleeve, an axial positioning hole sleeved with the first locking cutting sleeve is formed in one end of the steel column locking cutting sleeve along an axial direction, a connecting hole sleeved with the first piston rod and the second piston rod is formed in the other end of the steel column locking cutting sleeve, a sealing ring is embedded between the hole wall of the connecting hole and the first piston rod, and a third clamping head connected with the circumferential annular groove is formed in one end, away from the first locking cutting sleeve, of the steel column locking cutting sleeve; one end of the knurling locking clamping sleeve is connected with the steel column locking clamping sleeve, and the other end of the knurling locking clamping sleeve is detachably connected with the outer wall of the opening end of the positioning hole.

9. The new quick connector for electric locomotive according to claim 8, characterized in that an open slot facing the second locking ferrule is formed between the knurled locking ferrule and the steel column locking ferrule, a third compression spring is sleeved in the open slot, and the third compression spring abuts against the open end surface of the second locking ferrule and the knurled locking ferrule.

10. The novel quick connector for electric locomotives according to claim 9, wherein the knurled locking ferrule has a knurled anti-slip band disposed on an outer diameter thereof.

Technical Field

The invention relates to the field of electric locomotive equipment, in particular to a novel quick connector for an electric locomotive.

Background

Most of the quick connectors of the existing electric locomotives are inlet fittings, so that the price is high, and the lapping surfaces between the matching positions of the male head and the female head adjusting part of the quick connectors are often worn or scratched by hard impurities and cannot be repaired, so that fluid leakage is caused, and the quick connectors are frequently replaced. Therefore, a new quick connector for electric locomotive is needed.

Disclosure of Invention

The invention mainly aims to provide a novel quick connector for an electric locomotive, which solves the problem of leakage caused by abrasion of a grinding surface of the conventional quick connector for the electric locomotive.

In order to achieve the purpose, the novel quick connector for the electric locomotive comprises a first connector assembly, a second connector assembly and a transition locking piece, wherein the first connector assembly comprises a first shaft, a first compression spring and a first connecting sleeve which is provided with openings at two ends and is communicated with the first connecting sleeve to form a first installation space, the first shaft is axially provided with a first flow passage with openings at two ends, the first shaft is slidably sleeved in the first installation space along the connecting line direction of the two openings of the first connecting sleeve, the first compression spring is arranged in the first installation space and is abutted against one end, deviating from the second connector assembly, of the first shaft, so that the opening, deviating from the second connector assembly, of the first connecting sleeve is blocked or the first installation space and the first flow passage are communicated; the second joint component comprises a second shaft, a second compression spring and a second connecting sleeve, wherein the two ends of the second connecting sleeve are open, the second connecting sleeve is communicated to form a second mounting space, a second runner with two ends open is arranged on the second shaft along the axial direction, the second shaft is sleeved in the second mounting space in a sliding mode along the direction of the connecting line of the two openings of the second connecting sleeve, the second compression spring is arranged in the second mounting space and is abutted against one end, away from the first joint component, of the second shaft, so that the opening, away from the first joint component, of the second connecting sleeve is blocked or the second mounting space and the second runner are communicated; the transition locking piece is detachably connected with the first connecting sleeve and the second connecting sleeve so as to enable the second shaft to abut against and push the first shaft to slide; the first flow passage is in sealed communication with the second flow passage such that the first connector assembly communicates with the second connector assembly.

Preferably, the first connecting sleeve comprises a first sleeve seat and a first locking clamping sleeve which are coaxially and detachably connected, one end of the first sleeve seat is used for being communicated with external fluid equipment, and a first limiting hole used for clamping the first compression spring and the first shaft is formed in the other end of the first sleeve seat in the axial direction.

Preferably, a first inverted taper angle is formed in one end of the first locking clamping sleeve, one end of the first shaft is slidably sleeved in the first locking clamping sleeve, the other end of the first shaft is used for sealing the first inverted taper angle in a fit manner under the spring force action of the first compression spring, and a ball locking groove used for connecting the transition locking piece is formed in the outer wall of the first locking clamping sleeve.

Preferably, the first shaft comprises a first piston rod and a first plug which are connected with each other, the first piston rod is provided with an inflow hole along the axial direction, the end of the first piston rod, which is close to the first plug, is provided with at least one group of first transition holes which penetrate through the wall thickness along the radial direction and are communicated with the inflow hole, the first piston rod penetrates through and slides in an inner hole of the first locking clamping sleeve, and a plurality of groups of sealing rings are embedded between the first piston rod and the first locking clamping sleeve; the first end cap is close to one end of the first piston rod is attached and sealed to the first inverted cone angle, and the first end cap deviates from one end of the first piston rod and abuts against the first compression spring.

Preferably, the second connection sleeve comprises a second sleeve seat and a second locking clamping sleeve which are coaxially and detachably connected, one end of the second sleeve seat is used for communicating with external fluid equipment, and a second limiting hole used for clamping the second compression spring and the second shaft is formed in the other end of the second sleeve seat along the axial direction.

Preferably, one end of the second locking cutting sleeve is provided with a second inverted cone angle, one end of the second locking cutting sleeve, which is away from the second inverted cone angle, is provided with a positioning hole, and a circumferential ring groove for inserting the transition locking piece is formed in the positioning hole; one end of the second shaft is slidably sleeved in the second locking clamping sleeve, and the other end of the second shaft is used for sealing the second inverted cone angle in a fit manner under the spring force action of the second compression spring.

Preferably, the second shaft comprises a second piston rod, a second plug and a second top shaft which are connected with each other, the second piston rod is provided with an outflow hole along the axial direction, one end of the second piston rod, which is close to the second plug, is provided with at least one group of second transition holes which penetrate through the wall thickness along the radial direction and are communicated with the outflow hole, the second piston rod penetrates through and is connected with an inner hole of the second locking cutting sleeve in a sliding manner, and a plurality of groups of sealing rings are embedded between the second piston rod and the second locking cutting sleeve; one end, close to the second piston rod, of the second plug is attached to seal the second inverted cone angle, and one end, away from the second piston rod, of the second plug is abutted to the second compression spring.

Preferably, the transition locking member comprises a steel column locking cutting sleeve and a knurled locking cutting sleeve sleeved outside the steel column locking cutting sleeve, an axial positioning hole sleeved with the first locking cutting sleeve is formed in one end of the steel column locking cutting sleeve along the axial direction, a connecting hole sleeved with the first piston rod and the second piston rod is formed in the other end of the steel column locking cutting sleeve, a sealing ring is embedded between the hole wall of the connecting hole and the first piston rod, and a third clamping head connected with the circumferential annular groove is formed in one end, away from the first locking cutting sleeve, of the steel column locking cutting sleeve; one end of the knurling locking clamping sleeve is connected with the steel column locking clamping sleeve, and the other end of the knurling locking clamping sleeve is detachably connected with the outer wall of the opening end of the positioning hole.

Preferably, an opening clamping groove facing the second locking clamping sleeve is formed between the knurled locking clamping sleeve and the steel column locking clamping sleeve, a third compression spring is sleeved in the opening clamping groove, and the third compression spring abuts against the opening end face of the second locking clamping sleeve and the knurled locking clamping sleeve.

Preferably, the outer diameter of the knurled locking cutting sleeve is provided with a knurled anti-slip belt.

In the technical scheme of the invention, through the design that the first compression spring is abutted against the first shaft, when the first joint component is separated from the second joint component, the first compression spring acts on the first shaft in a reaction manner to push the first shaft to plug the opening of the first connecting sleeve, which is deviated from the second joint component, so as to play a role in sealing the first joint component; in a similar way, through the design that the second compression spring abuts against the second shaft, when the second joint component is separated from the first joint component, the second compression spring acts on the second shaft in a reaction manner to push the second shaft to plug the opening of the second connecting sleeve, which deviates from the first joint component, so that the effect of sealing the second joint component is achieved, and therefore a self-locking rod and a small spring which have high requirements on the processing technology in the original quick joint structure are replaced, and the manufacturing cost of the quick joint is reduced. After the first joint component and the second joint component are assembled, high-pressure fluid circulates along the first flow channel and the second flow channel, flows into the opening of the first connecting sleeve, which is far away from the second joint component, enters the flow gap between the first mounting space and the first connecting sleeve, then enters the first flow channel through the opening of the first flow channel, which is far away from the second joint component, sequentially passes through the second flow channel, the opening of the second flow channel, which is far away from the first joint component, the flow gap between the second mounting space and the second connecting sleeve, and flows out from the opening of the second connecting sleeve, which is far away from the first joint component; the flow gap between the first installation space and the first connecting sleeve is opened through compression of the first compression spring or the first compression spring pushes the first shaft to be plugged, and similarly, the flow gap between the second installation space and the second connecting sleeve is opened through compression of the second compression spring or the second shaft is pushed to be plugged through the second compression spring, so that impact on the grinding surface of the first connecting sleeve and the second connecting sleeve is reduced, and the pulling and inserting times and the sealing effect of the quick connector are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic front view of a structure according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of A-A in FIG. 1 (the flow direction is indicated by a dotted line).

Fig. 3 is a schematic cross-sectional view of the first joint assembly of fig. 1 in a closed state.

Fig. 4 is a schematic cross-sectional structure view of the first shaft in fig. 3.

FIG. 5 is a cross-sectional structural view of the transitional locking member of FIG. 3.

Fig. 6 is a schematic cross-sectional view of the second joint assembly of fig. 1 in a closed state.

Fig. 7 is a cross-sectional structural view of the second shaft in fig. 6.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a novel quick connector for an electric locomotive.

Referring to fig. 1 to 7, the novel quick coupling for electric locomotives disclosed in this embodiment includes a first coupling assembly 100, a second coupling assembly 200 and a transitional locking member 15, the first joint assembly 100 includes a first shaft 13, a first compression spring 14 and a first coupling sleeve 110 opened at both ends and communicating to form a first mounting space 101, the first shaft 13 is provided with a first flow channel 10 with two open ends along the axial direction, the first shaft 13 is slidably sleeved in the first installation space 101 along the connecting line direction of the two open ends of the first connecting sleeve 110, the first compression spring 14 is arranged in the first mounting space 101 and abuts against an end of the first shaft 13 facing away from the second joint assembly 200, for blocking the opening of the first connecting sleeve 110 facing away from the second joint assembly 200 or for communicating the first installation space 101 with the first flow channel 10; the second joint component 200 comprises a second shaft 23, a second compression spring 24 and a second connecting sleeve 210 which is open at two ends and communicated to form a second mounting space 201, the second shaft 23 is axially provided with a second flow passage 20 which is open at two ends, the second shaft 23 is slidably sleeved in the second mounting space 201 along the connecting line direction of the two openings of the second connecting sleeve 210, the second compression spring 24 is arranged in the second mounting space 201 and is abutted against one end of the second shaft 23 departing from the first joint component 100 so as to be used for blocking the opening of the second connecting sleeve 210 departing from the first joint component 200 or communicating the second mounting space 201 with the second flow passage 20; the transitional locking member 15 detachably connects the first connecting sleeve 110 and the second connecting sleeve 210, so that the second shaft 23 abuts against and pushes the first shaft 13 to slide, and the first flow passage 10 is in sealed communication with the second flow passage 20, so that the first joint assembly 100 is communicated with the second joint assembly 200.

In the technical solution of the present invention, by the design that the first compression spring 14 abuts against the first shaft 13, when the first joint assembly 100 is separated from the second joint assembly 200, the first compression spring 14 acts against the first shaft 13 to push the first shaft 13 to close the opening of the first connecting sleeve 110 away from the second joint assembly 200, so as to seal the first joint assembly 100; similarly, through the design that the second compression spring 24 abuts against the second shaft 23, when the second joint assembly 200 is separated from the first joint assembly 100, the second compression spring 24 acts on the second shaft 23 in a reverse manner to push the second shaft 23 to plug the opening of the second connecting sleeve 210 departing from the first joint assembly 100, so that the effect of sealing the second joint assembly 200 is achieved, and therefore a self-locking rod and a small spring which have extremely high requirements on the machining process in the original quick joint structure are replaced, and the manufacturing cost of the quick joint is reduced. After the first joint component 100 and the second joint component 200 are assembled, high-pressure fluid flows in from the opening of the first connecting sleeve 110, which is away from the second joint component 200, and enters the flow gap between the first installation space 101 and the first connecting sleeve 110, then enters the first flow channel 10 through the opening of the first flow channel 10, which is away from the second joint component 200, and sequentially passes through the second flow channel 20, the opening of the second flow channel, which is away from the first joint component 100, and the flow gap between the second installation space 201 and the second connecting sleeve 210, and flows out from the opening of the second connecting sleeve 210, which is away from the first joint component 100; the flow gap between the first installation space 101 and the first connection sleeve 110 is opened by the compression of the first compression spring 14, or the first shaft 13 is pushed to be blocked by the first compression spring 14, and similarly, the flow gap between the second installation space 201 and the second connection sleeve 210 is opened by the compression of the second compression spring 24, or the second shaft 23 is pushed to be blocked by the second compression spring 24, so that the impact on the ground joint surface of the first connection sleeve 110 and the second connection sleeve 210 is reduced, and the pulling and inserting times and the sealing effect of the quick connector are improved.

Preferably, the first connection sleeve 110 includes a first sleeve seat 11 and a first locking clamping sleeve 12 that are coaxially detachably connected, one end of the first sleeve seat 11 is used for communicating with an external fluid device (not shown), and the other end of the first sleeve seat 11 is axially provided with a first limiting hole 111 for clamping the first compression spring 14 and the first shaft 13.

Specifically, the inner wall of the first limiting hole 111 is provided with a first clamping groove 112 for connecting the first locking ferrule 12, the first limiting hole 111 is a stepped hole, one end of the first compression spring 14 is inserted into the small hole of the first limiting hole 111, and the other end of the first compression spring 14 compresses and abuts against the first shaft 13. The elasticity of the first compression spring 14 is larger than that of a small compression spring in the original inlet quick coupling, and the sealing of the quick coupling is facilitated.

Preferably, one end of the first locking clamping sleeve 12 is provided with a first inverted taper angle 121, one end of the first shaft 13 is slidably sleeved in the first locking clamping sleeve 12, the other end of the first shaft 13 is used for sealing the first inverted taper angle 121 in a fitting manner under the spring force action of the first compression spring 14, and the outer wall of the first locking clamping sleeve 12 is provided with a ball locking groove 122 for connecting the transition locking member 15.

Specifically, the outer diameter of the first locking ferrule 12 is provided with a turning ring boss 123.

Preferably, the first shaft 13 includes a first piston rod 131 and a first plug 132 connected to each other, the first piston rod 131 has an inflow hole 30 axially opened, the end of the first piston rod 131 close to the first plug 132 has at least one set of first transition holes 31 radially opened through the wall thickness to communicate with the inflow hole 30, the first piston rod 131 passes through and slides in the inner hole of the first locking sleeve 12, and a plurality of sets of sealing rings 16 are embedded between the first piston rod 131 and the first locking sleeve 12; the first plug 132 is close to one end of the first piston rod 131 and seals the first inverted taper angle 121, and one end of the first plug 132 departing from the first piston rod 131 is abutted to the first compression spring 14.

In particular, the first shaft 13 slides axially along the first locking collar 12 for sealing or opening the first joint assembly 100.

Preferably, the second connection sleeve 210 includes a second sleeve seat 21 and a second locking sleeve 22 that are coaxially detachably connected, one end of the second sleeve seat 21 is used for communicating with an external fluid device (not shown), and a second limiting hole 211 for clamping the second compression spring 24 and the second shaft 23 is axially opened at the other end of the second sleeve seat 21.

Specifically, a second clamping groove 212 for connecting the second locking ferrule 22 is formed in the inner wall of the second limiting hole 211, the second limiting hole 211 is a stepped hole, one end of the second compression spring 24 is inserted into a small hole of the second limiting hole 211, and the other end of the second compression spring 24 compresses and abuts against the second shaft 23. The elasticity of the second compression spring 24 is larger than that of a small compression spring in the original inlet quick coupling, and the sealing of the quick coupling is facilitated.

Preferably, one end of the second locking ferrule 22 is provided with a second taper angle 221, one end of the second locking ferrule 22 away from the second taper angle 221 is provided with a positioning hole 222, and a circumferential annular groove 223 for inserting the transition locking member 15 is formed in the positioning hole 222; one end of the second shaft 23 is slidably sleeved in the second locking cutting sleeve 22, and the other end of the second shaft 23 is used for sealing the second inverted cone angle 221 under the action of the spring force of the second compression spring 24.

Specifically, the outer diameter of the second locking ferrule 22 is provided with a twist boss 224. The end of the second shaft 23 facing away from the second compression spring 24 extends out of the bottom of the positioning hole 222.

Preferably, the second shaft 23 includes a second piston rod 231 and a second plug 232 connected to each other, the second piston rod 231 has an outlet 40 along the axial direction, the end of the second piston rod 231 close to the second plug 232 has at least one set of second transition holes 41 penetrating through the wall thickness to communicate with the outlet 40 along the radial direction, the second piston rod 231 passes through and slides in the inner hole of the second locking ferrule 22, and a plurality of sets of sealing rings 16 are embedded between the second piston rod 231 and the second locking ferrule 22; one end of the second plug 232 close to the second piston rod 231 is attached to seal the second inverted cone angle 221, and one end of the second plug 232 away from the second piston rod 231 is abutted to the second compression spring 24.

Specifically, the second shaft 23 slides axially along the second locking ferrule 22 for sealing or opening the second connector assembly 200.

Preferably, the transition locking member 15 includes a steel column locking sleeve 51 and a knurled locking sleeve 52 sleeved outside the steel column locking sleeve 51, one end of the steel column locking sleeve 51 is axially provided with an axial positioning hole 510 in which the first locking sleeve 21 is sleeved, the other end of the steel column locking sleeve 51 is provided with a connecting hole 520 in which the first piston rod 131 and the second piston rod 231 are sleeved, a sealing ring 16 is embedded between the hole wall of the connecting hole 520 and the first piston rod 131, and one end of the steel column locking sleeve 51, which is away from the first locking sleeve 21, is provided with a third clamping head 511 connected with the circumferential annular groove 224; one end of the knurled locking cutting sleeve 52 is connected to the steel column locking cutting sleeve 51, and the other end of the knurled locking cutting sleeve 52 is detachably connected to the outer wall of the opening end of the positioning hole 223 of the second locking cutting sleeve 22.

Preferably, an opening clamping groove 530 facing the second locking clamping sleeve 22 is formed between the knurled locking clamping sleeve 52 and the steel column locking clamping sleeve 51, a third compression spring 53 is sleeved in the opening clamping groove 530, and the third compression spring 53 abuts against the opening end surface of the second locking clamping sleeve 22 and the knurled locking clamping sleeve 52.

Specifically, the third compression spring 53 is a compression spring, and the convenience of disassembling and assembling the transition locking member 15 is improved through the third compression spring 53.

Preferably, the knurled locking sleeve 52 is provided with a knurled anti-slip band 521 on the outer diameter.

After the first joint assembly 100 and the second joint assembly 200 are assembled in this embodiment, high-pressure fluid can only leak from the end surfaces of the second shaft 23 and the first shaft 13, through the joint surface between the steel column locking clip 51 and the first locking clip 21, the leaking pressure is mainly borne by the second shaft 23 and the first shaft 13, the pressure and the wear borne by the sealing ring 16 are greatly reduced, and the number of times of inserting and pulling the quick joint and the sealing effect are improved.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.