A floating anti-drop device for the female end of a quick-connect connector

Abstract

A floating anti-disconnection device for the female end of a quick-connect connector solves the problems of the prior art, such as the inability to adapt to unmanned automated plugging and unplugging operations, and the frequent pop-up opening of the connection between the male and female ends of the pipeline due to the filling pressure inside the hydraulic device, which affects the normal operation of the equipment and results in poor production safety. The device comprises a floating sleeve connected to the female end of the quick-connect connector, which is movably sleeved on the fixed sleeve of the female end of the quick-connect connector. A female gland is provided at the upper end of the floating sleeve, and the hose connector of the female end of the quick-connect connector extends to the outside of the floating sleeve through the central through-hole of the female gland. A floating space for the female end is provided between the upper end of the fixed sleeve and the lower side of the female gland, and the lower end of the floating sleeve is fixedly connected to the male guide seat. The device has a reasonable design and a compact structure, can assist in the rapid plugging and disconnection of hydraulic pipelines, is suitable for automated unmanned plugging and unplugging operations, can effectively prevent the connector from being popped open by internal pressure, and is safe and reliable to use.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic pipeline connection devices, and specifically relates to a device that can assist in completing the quick connection and disconnection of hydraulic pipelines, is suitable for automated unmanned plugging and unplugging operations, can effectively prevent the connector from being bounced open by internal pressure, and uses a safe and reliable floating anti-detachment device for the female head of a quick-plug connector. Background Art

[0002] At present, some quick-connect connectors with the effects of instant flow interruption, self-sealing and quick plug-in connection mostly adopt a rotary locking structure, that is: one plug and one turn to complete the connection and locking of the connector; one turn and one pull to complete the disconnection of the connector and the self-sealing of the pipeline. Although this traditional structure has a relatively simple connection action, it is not suitable for unmanned automated tedious plug-in and pull-out operations, and it is difficult to meet the use requirements of automated production. In addition, in actual application, when the hydraulic cylinder is filled with liquid medium, the internal pressure increases, which often causes the male and female connection parts of the pipeline to pop open, affecting the normal use and operation of the equipment and poor production safety. Therefore, it is necessary to improve the anti-detachment structure of the quick-connect connector in the prior art. Summary of the Invention

[0003] The present invention is aimed at the above problems and provides a method for assisting in the quick connection and disconnection of hydraulic pipelines, which is suitable for automated unmanned plugging and unplugging operations, can effectively prevent the connector from being bounced open by internal pressure, and uses a safe and reliable floating anti-detachment device for the female head of the quick-plug connector.

[0004] The technical solution adopted by the present invention is: the floating anti-detachment device of the quick-plug female connector includes a floating sleeve connected to the quick-plug female connector, and is characterized in that: the floating sleeve is movably sleeved on the fixed clamping sleeve of the quick-plug female connector, and a female connector cover is provided at the upper end of the floating sleeve. The hose connector of the quick-plug female connector extends to the outside of the floating sleeve through the middle through hole of the female connector cover, and a female connector floating space is provided between the upper end of the fixed clamping sleeve located inside the floating sleeve and the lower side of the female connector cover; the lower end of the floating sleeve is fixedly connected to the male connector guide seat.

[0005] The floating sleeve includes a sleeve body, which is internally provided with a female connector floating connection cavity with an open upper end, and a male connector plug cavity at its lower end, which communicates with the female connector floating connection cavity. A limiting flange is provided between the female connector floating connection cavity and the male connector plug cavity. This allows the fixed ferrule of the quick-connect female connector to be movably inserted into the floating female connector cavity of the floating sleeve. The limiting flange restricts the position of the lower end of the fixed ferrule, allowing the quick-connect male connector to pass through the male connector plug cavity at the lower end of the sleeve body and enter the floating female connector cavity, where it contacts the quick-connect female connector.

[0006] The female connector gland includes a gland body, a connector through-hole disposed in the middle of the gland body, and a plurality of top surface connection holes disposed around the connector through-hole and on the gland body. Correspondingly, a plurality of gland connection holes are disposed on the top surface of the sleeve at the upper end of the sleeve body of the floating sleeve. A floating limit flange is disposed below the connector through-hole of the female gland, and the floating limit flange is located within the upper end of the female connector floating connection cavity of the floating sleeve. The female gland is positioned and connected to the gland connection hole on the top surface of the floating sleeve using connecting bolts disposed in the top surface connection hole. The floating limit flange on the lower side of the connector through-hole of the female gland limits the upward floating position of the fixed ferrule of the quick-connect female connector within the female connector floating connection cavity.

[0007] The female gland is assembled in a split-assembly structure, which is convenient for installation and disassembly of the device and for use.

[0008] The male guide seat includes a guide seat body, a cylindrical cavity disposed in the middle thereof, a sleeve connection hole with an upper opening disposed at the upper end of the cylindrical cavity, and a trumpet-shaped cavity with a lower opening disposed at the lower end of the cylindrical cavity. The trumpet-shaped cavity, the cylindrical cavity, and the sleeve connection hole are interconnected. The guide seat body is also provided with a guide seat connection flange to connect the floating sleeve to the sleeve connection hole at the upper end of the male guide seat. Furthermore, during the process of plugging the quick-connect connectors together, the quick-connect male connector entering the cylindrical cavity through the trumpet-shaped cavity with a lower opening is automatically straightened, facilitating contact and plugging between the quick-connect male connector and the quick-connect female connector.

[0009] The lower end of the sleeve connection hole is provided with a sleeve positioning hole, and correspondingly, the lower end of the floating sleeve is provided with a positioning plug connector, so that the positioning plug connector at the lower end of the floating sleeve forms a positioning connection with the sleeve positioning hole at the lower end of the sleeve connection hole of the male guide seat.

[0010] The inner wall of the sleeve connection hole is provided with a sleeve connection internal thread, and the outer wall of the floating sleeve is provided with a guide seat connection external thread. A lock nut is also provided above the guide seat connection external thread. The floating sleeve is fixedly connected to the sleeve connection internal thread of the sleeve connection hole of the male guide seat via the guide seat connection external thread, and the lock nut is used to tighten the floating sleeve in place.

[0011] The quick-plug female connector includes a female connector body, a movable ferrule is provided at one end of the female connector body facing the quick-plug male connector, a fixed ferrule is provided at the extended end of the movable ferrule, and a ferrule compression spring is provided between the fixed ferrule and the movable ferrule; a female connector cavity is provided inside the female connector body, a female connector liquid inlet and a female connector liquid outlet are provided at both ends of the female connector cavity, a locking steel ball and a limit retaining ring are movably provided in the male connector cavity at the female connector cavity liquid inlet, between the outer wall of the movable ferrule and the inner wall of the fixed ferrule; the female connector cavity outlet is provided with a female connector cavity, a ... The liquid port is connected to the hose connector; a core shaft fixing seat is provided in the female head cavity of the female head body, and a female head core shaft arranged along the axial direction of the female head body is fixed on the core shaft fixing seat, and the extended end of the female head core shaft is located at the liquid inlet of the female head cavity; a limiting core sleeve is provided inside the female head cavity and on the outside of the female head core shaft, and a limiting compression spring is provided between the limiting core sleeve and the core shaft fixing seat; a movable core sleeve is also provided on the outside of the limiting core sleeve and at the liquid inlet of the female cavity, and a movable compression spring is provided between the movable core sleeve and the female head body. The limit core sleeve and the female core shaft are separated and opened by the mutual extrusion contact between the male plug-in protrusion of the quick-connect male connector and the movable core sleeve of the quick-connect female connector; at the same time, the mutual extrusion contact between the male valve core of the quick-connect male connector and the female core shaft of the quick-connect female connector drives the female core shaft to drive the female body and the movable sleeve and the fixed sleeve to move relative to each other, and the locking groove on the outer side of the male plug-in protrusion is engaged with the locking steel ball movably arranged in the male plug-in cavity; thereby connecting the male cavity and the female cavity, allowing the liquid medium to circulate, and realizing the connection of the hydraulic pipeline.

[0012] The present invention has the following beneficial effects: The present invention utilizes a floating sleeve connected to a quick-connect female connector, the floating sleeve movably sleeved on the fixed sleeve of the quick-connect female connector, a female connector gland disposed at the upper end of the floating sleeve, and the quick-connect female connector's hose connector extending out of the floating sleeve through a central through-hole in the gland; a floating space for the female connector is disposed between the upper end of the fixed sleeve within the floating sleeve and the lower side of the gland; and the lower end of the floating sleeve is fixedly connected to a male connector guide seat. Thus, the present invention has a reasonable design and a compact structure. The addition of the floating sleeve to the fixed female connector structure, which enables automatic plugging and unplugging of the connector, allows the quick-connect female connector to float appropriately in the axial direction, thereby allowing the quick-connect female connector to remain locked without being affected by the pressure of the internal liquid medium during plugging and liquid supply. Furthermore, when liquid supply is terminated and the male and female connectors are disconnected, flow is quickly cut off and sealed, preventing leakage of the liquid medium in the pipeline. The floating anti-disconnection device of the female quick-connect connector can assist in the rapid connection and disconnection of hydraulic pipelines. It is suitable for automated unmanned plugging and unplugging operations, can effectively prevent the connector from being bounced open by internal pressure, and is safe and reliable to use. It can be used in various engineering machinery industries, including the automated handling of underground support devices in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 A structural diagram of the male guide seat in FIG.

[0015] Figure 3 yes Figure 1 A structural diagram of a floating casing.

[0016] Figure 4 yes Figure 3 Top view of .

[0017] Figure 5 yes Figure 1 A structural diagram of the female header cover (split assembly structure) in FIG.

[0018] Figure 6 yes Figure 5 Bottom view of .

[0019] Figure 7 yes Figure 1 A structural diagram of a quick-connect female connector.

[0020] Figure 8 yes Figure 1 Schematic diagram of an action state in which the quick-connect male connector moves upward and contacts the lower end of the quick-connect female connector.

[0021] Figure 9 yes Figure 8 Schematic diagram of an action state in which the male quick connector continues to move upward and pushes the female quick connector to move upward a distance D.

[0022] Figure 10 yes Figure 9 Schematic diagram of an action state in which the quick-connect male connector continues to move upward by a distance s and is inserted into the quick-connect female connector.

[0023] Explanation of the serial numbers in the figure: 1 quick-connect female connector, 2 fixed ferrule, 3 hose connector, 4 male guide seat, 5 floating sleeve, 6 locking nut, 7 female gland, 8 female floating space, 9 quick-connect male connector, 10 guide seat body, 11 cylindrical cavity, 12 trumpet-shaped cavity, 13 sleeve connection hole, 14 sleeve connection internal thread, 15 sleeve positioning hole, 16 guide seat connection flange, 17 sleeve body, 18 positioning plug connector, 19 male plug-in cavity, 20 female floating connection cavity, 21 limiting ridge, 22 guide seat connection external thread, 23 sleeve top surface, 24 gland connection hole, 25 gland body, 26 top surface connection hole, 27 connector through hole, 28 floating limiting flange, 29 movable ferrule, 30 movable core sleeve, 31 limiting core sleeve, 32 female core shaft, 33 locking steel ball, 34 limiting retaining ring. DETAILED DESCRIPTION

[0024] according to Figures 1 to 10 The specific structure of the present invention is described in detail. The floating anti-disengagement device for the female quick-connector connector includes a floating sleeve 5 connected to the female quick-connector connector 1. The floating sleeve 5 is composed of a sleeve body 17. The sleeve body 17 is provided with a female floating connection cavity 20 with an upper end opening. The lower end of the sleeve body 17 is provided with a male plug-in cavity 19, and the male plug-in cavity 19 and the female floating connection cavity 20 are interconnected. A limiting flange 21 is provided between the female floating connection cavity 20 and the male plug-in cavity 19 of the sleeve body 17 to limit the lower end position of the fixed ferrule 2. The fixed ferrule 2 of the female quick-connector connector 1 is then movably inserted into the female floating connection cavity 20 of the floating sleeve 5, and the limiting flange 21 is used to limit the downward movement of the fixed ferrule 2. In addition, the male quick-connector connector 9 is inserted into the female floating connection cavity 20 through the male plug-in cavity 19 at the lower end of the sleeve body 17, making contact with the female quick-connector connector 1. According to specific usage requirements, the quick-connect female connector 1 can adopt different structural forms such as straight-through, elbow or tee.

[0025] The floating sleeve 5 is flexibly mounted on the fixed ferrule 2 of the quick-connect female connector 1, and a female gland 7 is provided at the upper end of the floating sleeve 5. The female gland 7 comprises a gland body 25, with a connector hole 27 disposed in the middle. Several groups of circumferentially arranged top surface connection holes 26 are provided around the connector hole 27 and on the gland body 25. Correspondingly, several groups of circumferentially arranged gland connection holes 24 are provided on the top surface 23 of the sleeve body 17 at the upper end of the floating sleeve 5. These gland connection holes 24 on the sleeve top surface 23 correspond one-to-one with the top surface connection holes 26 on the female gland 7. A floating stop flange 28 is provided below the connector hole 27 of the female gland 7, and is located within the upper end of the floating sleeve 5's female floating connection cavity 20. Thus, the female gland 7 is positioned and connected to the gland connection hole 24 on the top surface 23 of the floating sleeve 5 by using the connecting bolts set in the top surface connection hole 26, and the floating limit flange 28 on the lower side of the connector through hole 27 of the female gland 7 is used to limit the upward floating position of the fixed sleeve 2 of the quick-connect female connector 1 in the female connector floating connection cavity 20. In order to facilitate the installation and disassembly of the device and convenient use, the female gland 7 can adopt a split assembly structure, for example: two identical semi-circular ring assembly structures (such as Figure 5 and Figure 6 shown).

[0026] The fixed ferrule 2 at the lower end of the quick-connect female connector 1 is located within the female connector's floating connection cavity 20 of the floating sleeve 5. The hose connector 3 at the upper end of the quick-connect female connector 1 extends out of the floating sleeve 5 through the central through-hole of the female connector gland 7. Furthermore, a female connector floating space 8, with an upward and downward floating distance D, is defined between the upper end of the fixed ferrule 2 within the floating sleeve 5 and the floating limit flange 28 on the underside of the female connector gland 7.

[0027] The lower end of the floating sleeve 5 is fixedly connected to the male guide seat 4. The male guide seat 4 comprises a guide seat body 10, with a cylindrical cavity 11 disposed in the middle. The upper end of the cylindrical cavity 11 is provided with a sleeve connection hole 13, which is open at the top. The lower end of the cylindrical cavity 11 is provided with a trumpet-shaped cavity 12, which is open at the bottom. The trumpet-shaped cavity 12, the cylindrical cavity 11, and the sleeve connection hole 13 are coaxially connected. The guide seat body 10 is also provided with a guide seat connection flange 16 for connecting to related equipment (e.g., a unitary support top beam). The lower end of the sleeve connection hole 13 of the male guide seat 4 is provided with a sleeve positioning hole 15. Correspondingly, the lower end of the floating sleeve 5 is provided with a positioning plug 18. This positioning plug 18 at the lower end of the floating sleeve 5 forms a positioning connection with the sleeve positioning hole 15 at the lower end of the sleeve connection hole 13 of the male guide seat 4. Moreover, a sleeve connecting internal thread 14 is provided on the inner wall of the sleeve connecting hole 13, a guide seat connecting external thread 22 is provided on the outer wall of the floating sleeve 5, and a locking nut 6 is also provided on the upper part of the guide seat connecting external thread 22; and then the floating sleeve 5 is fixedly connected to the sleeve connecting internal thread 14 of the sleeve connecting hole 13 of the male guide seat 4 through the guide seat connecting external thread 22, the floating sleeve 5 is connected to the sleeve connecting hole 13 at the upper end of the male guide seat 4, and the locking nut 6 is used to tighten the position of the floating sleeve 5; at the same time, in the process of quick plug connectors being plugged into each other, the quick plug male head 9 that enters the cylindrical cavity 11 through the trumpet-shaped cavity 12 with the lower end opening is automatically straightened, which facilitates the contact and plugging of the quick plug male head 9 and the quick plug female head 1.

[0028] The quick-connect female connector 1 consists of a female connector body. A movable sleeve 29 is provided at the end of the female connector body facing the quick-connect male connector 9. A fixed sleeve 2 is provided at the extended end of the movable sleeve 29, and a sleeve compression spring is provided between the fixed sleeve 2 and the movable sleeve 29. A female connector cavity is provided inside the female connector body. The female connector cavity is provided with a female cavity liquid inlet and a female cavity liquid outlet at both ends. A locking steel ball 33 and a limit ring 34 are movably provided in the male connector plug cavity 19 at the female cavity liquid inlet, between the outer wall of the movable sleeve 29 and the inner wall of the fixed sleeve 2. The female cavity liquid outlet is connected to the hose connector 3. A core shaft fixing seat is provided in the female connector cavity of the female connector body. A female core shaft 32 arranged along the axial direction of the female connector body is fixedly provided on the core shaft fixing seat, and the extended end of the female core shaft 32 is located at the female cavity liquid inlet. A limit sleeve 31 is mounted inside the female connector cavity of the quick-connect female connector 1 and outside the female connector core shaft 32. A limit compression spring is installed between the limit sleeve 31 and the core shaft fixing seat. A movable sleeve 30 is also mounted outside the limit sleeve 31 and at the female connector cavity liquid inlet. A movable compression spring is installed between the movable sleeve 30 and the female connector body.

[0029] The quick-connect male connector 9 is composed of a male connector body, which is provided with a male connector cavity inside. The two ends of the male connector cavity are respectively provided with a hose connection port and a male connector cavity liquid outlet. On the male connector body, one end where the male connector cavity liquid outlet is arranged is provided with a male connector plug-in protrusion, and a locking slot is provided on the outside of the male connector plug-in protrusion. A male valve core guide sleeve is also fixedly provided in the male connector cavity, and a male valve stem arranged along the axis of the male connector body is telescopically provided in the male valve core guide sleeve. A male valve core with a liquid spray hole is provided at the front end of the male valve stem, and a male valve core compression spring is provided between the male valve core and the male valve core guide sleeve. A sealing member is also provided between the outside of the male valve core and the inner wall of the male connector cavity liquid outlet at the front end of the male connector cavity. Then, the mutual extrusion contact between the male plug-in protrusion of the quick-plug male connector 9 and the movable core sleeve 30 of the quick-plug female connector 1 is used to drive the limiting core sleeve 31 and the female core shaft 32 to separate and open; at the same time, the mutual extrusion contact between the male valve core of the quick-plug male connector 9 and the female core shaft 32 of the quick-plug female connector 1 is used to drive the female core shaft 32 to drive the female body and the movable clamping sleeve 29 to move relative to the fixed clamping sleeve 2, and the locking groove on the outer side of the male plug-in protrusion is engaged with the locking steel ball 33 movably arranged in the male plug-in cavity 19; so as to connect the male cavity and the female cavity, allow the liquid medium to circulate, and realize the connection of the hydraulic pipeline.

[0030] When using the floating anti-detachment device for the quick-connect female connector, first, connect the quick-connect male connector 9 to the plug-in and pull-out moving mechanism, and connect the hydraulic hose for liquid supply to the hose connection port of the quick-connect male connector 9; at the same time, connect the fixed sleeve 2 of the quick-connect female connector 1 to the male connector guide seat 4 through the floating sleeve 5, and the male connector guide seat 4 is fixedly connected to the relevant device through the guide seat connection flange 16; and use the hydraulic hose to connect the hose connector 3 of the quick-connect female connector 1 to the liquid inlet of the hydraulic drive device (for example: hydraulic column). When it is necessary to connect the hydraulic pipeline and supply fluid to the hydraulic drive device, the quick-plug male connector 9 is inserted into the trumpet-shaped cavity 12 on the lower side of the male connector guide seat 4 through the movement of the plug-in and pull-out moving mechanism; and when entering the cylindrical cavity 11 through the trumpet-shaped cavity 12 with the lower end opening, the quick-plug male connector 9 will be automatically straightened, and the front end surface of the quick-plug male connector 9 will contact the female connector core shaft 32 of the quick-plug female connector 1 and the end surface of the movable core sleeve 30 (as shown in FIG. Figure 8 shown).

[0031] Subsequently, the quick-plug male connector 9 continues to move axially and upward. Since the fixed sleeve 2 of the quick-plug female connector 1 has a female connector floating space 8 with a floating distance D in the female connector floating connection cavity 20 of the floating sleeve 5, the quick-plug male connector 9 pushes the quick-plug female connector 1 upward and moves to the female connector floating space 8 at the upper end of the female connector floating connection cavity 20, and the female connector floating space 8 changes from D to 0 (as shown in FIG. Figure 9 As shown; at this time, the female connector floating space 8 is located at the lower end of the female connector floating connection cavity 20). Afterwards, as the quick-connect male connector 9 continues to move upward, the fixed sleeve 2 of the quick-connect female connector 1 and the other components of the quick-connect female connector 1 undergo a relative displacement s; and when the locking steel ball 33 inside the quick-connect female connector 1 falls into the annular groove at the front end of the quick-connect male connector 9, the connection of the connector is completed (as shown in FIG. Figure 10 At this point, the hydraulic lines of the equipment at both ends are connected and can supply fluid.

[0032] During the filling process, the floating structure between the fixed ferrule 2 and the floating sleeve 5 of the quick-plug female connector 1 allows its axial floating amount to offset the micro-movement of the connector along the axial direction caused by the internal pressure increase, ensuring that the connector remains firmly connected without the application of external forces. After filling is completed, the plug-in and pull-out movement mechanism drives the quick-plug male connector 9 downward. When the female floating space 8 at the upper end of the female floating connection cavity 20 of the floating sleeve 5 once again changes from 0 to D, the fixed ferrule 2 of the quick-plug female connector 1 is restrained by the limiting ridge 21 at the lower end of the female floating connection cavity 20, becoming relatively fixed. Then, as the quick-plug male connector 9 continues to move downward, the quick-plug male connector 9 and the quick-plug female connector 1 are instantly disconnected, and the quick-plug female connector 1 and the quick-plug male connector 9 automatically complete the flow cut-off and sealing due to their internal spring structure.

Claims

1. A floating anti-dropout device for a quick-connect female connector, comprising a floating sleeve (5) connected to the quick-connect female connector (1), characterized in that: The floating sleeve (5) is movably sleeved on the fixed sleeve (2) of the quick-connect female connector (1), and a female connector cover (7) is provided at the upper end of the floating sleeve (5). The hose connector (3) of the quick-connect female connector (1) extends to the outside of the floating sleeve (5) through the middle through hole of the female connector cover (7), and a female connector floating space (8) is provided between the upper end of the fixed sleeve (2) inside the floating sleeve (5) and the lower side of the female connector cover (7); the lower end of the floating sleeve (5) is fixedly connected to the male connector guide seat (4); the floating sleeve (5) includes a sleeve body (17) The interior of the sleeve body (17) is provided with a female floating connection cavity (20) with an upper end opening, and the lower end of the sleeve body (17) is provided with a male plug-in cavity (19), and the male plug-in cavity (19) is communicated with the female floating connection cavity (20); a limited convex edge (21) is provided between the female floating connection cavity (20) and the male plug-in cavity (19); the female gland (7) includes a gland body (25), a connector through hole (27) is provided in the middle of the gland body (25), and a plurality of groups of top surface connectors are provided around the connector through hole (27) and on the gland body (25). The floating sleeve (5) has a plurality of connecting holes (26) and a plurality of pressure cap connecting holes (24) on the sleeve top surface (23) at the upper end of the sleeve body (17) of the floating sleeve (5); a floating limit flange (28) is provided on the lower side of the connector through hole (27) of the female head pressure cap (7), and the floating limit flange (28) is located inside the upper end of the female head floating connection cavity (20) of the floating sleeve (5); the male head guide seat (4) includes a guide seat body (10), a cylindrical cavity (11) is provided in the middle of the guide seat body (10), and an upper end opening is provided on the upper end of the cylindrical cavity (11). The cylindrical cavity (11) is provided with a trumpet-shaped cavity (12) with an opening at the lower end, and the trumpet-shaped cavity (12), the cylindrical cavity (11) and the sleeve connecting hole (13) are communicated with each other; the guide seat main body (10) is also provided with a guide seat connecting flange (16); the inner wall of the sleeve connecting hole (13) is provided with a sleeve connecting internal thread (14), the outer wall of the floating sleeve (5) is provided with a guide seat connecting external thread (22), and the upper part of the guide seat connecting external thread (22) is also provided with a locking nut (6).

2. The floating anti-drop device for the female quick-connect connector according to claim 1, characterized in that: The female gland (7) adopts a split assembly structure.

3. The floating anti-drop device for the female quick-connect connector according to claim 1, characterized in that: The lower end of the sleeve connecting hole (13) is provided with a sleeve positioning hole (15), and correspondingly, the lower end of the floating sleeve (5) is provided with a positioning plug connector (18).

4. The floating anti-drop device for the female quick-connect connector according to claim 1, characterized in that: The quick-connect female connector (1) comprises a female connector body, wherein a movable clamping sleeve (29) is provided at one end of the female connector body facing the quick-connect male connector (9), a fixed clamping sleeve (2) is provided at the extended end of the movable clamping sleeve (29), and a clamping sleeve compression spring is provided between the fixed clamping sleeve (2) and the movable clamping sleeve (29); a female connector cavity is provided inside the female connector body, and a female connector liquid inlet and a female connector liquid outlet are provided at both ends of the female connector cavity, and a locking steel ball (33) and a limit retaining ring (34) are movably provided inside the male connector cavity (19) at the female connector cavity liquid inlet, between the outer wall of the movable clamping sleeve (29) and the inner wall of the fixed clamping sleeve (2); the The liquid outlet of the female cavity is connected to the hose connector (3); a core shaft fixing seat is provided in the female cavity of the female body, and a female core shaft (32) arranged along the axial direction of the female body is fixedly provided on the core shaft fixing seat, and the extended end of the female core shaft (32) is located at the liquid inlet of the female cavity; a limiting core sleeve (31) is provided inside the female cavity and outside the female core shaft (32), and a limiting compression spring is provided between the limiting core sleeve (31) and the core shaft fixing seat; a movable core sleeve (30) is also provided outside the limiting core sleeve (31) and at the liquid inlet of the female cavity, and a movable compression spring is provided between the movable core sleeve (30) and the female body.

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